TextView.java revision d122d8eb3e92b47eb18aea1fc619cfd04e07b14b 
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.widget;
18
19import android.R;
20import android.content.ClipData;
21import android.content.ClipData.Item;
22import android.content.ClipboardManager;
23import android.content.Context;
24import android.content.Intent;
25import android.content.pm.PackageManager;
26import android.content.res.ColorStateList;
27import android.content.res.CompatibilityInfo;
28import android.content.res.Resources;
29import android.content.res.TypedArray;
30import android.content.res.XmlResourceParser;
31import android.graphics.Canvas;
32import android.graphics.Color;
33import android.graphics.Paint;
34import android.graphics.Path;
35import android.graphics.Rect;
36import android.graphics.RectF;
37import android.graphics.Typeface;
38import android.graphics.drawable.Drawable;
39import android.inputmethodservice.ExtractEditText;
40import android.os.Bundle;
41import android.os.Handler;
42import android.os.Message;
43import android.os.Parcel;
44import android.os.Parcelable;
45import android.os.SystemClock;
46import android.provider.Settings;
47import android.text.BoringLayout;
48import android.text.DynamicLayout;
49import android.text.Editable;
50import android.text.GetChars;
51import android.text.GraphicsOperations;
52import android.text.InputFilter;
53import android.text.InputType;
54import android.text.Layout;
55import android.text.ParcelableSpan;
56import android.text.Selection;
57import android.text.SpanWatcher;
58import android.text.Spannable;
59import android.text.SpannableString;
60import android.text.SpannableStringBuilder;
61import android.text.Spanned;
62import android.text.SpannedString;
63import android.text.StaticLayout;
64import android.text.TextDirectionHeuristic;
65import android.text.TextDirectionHeuristics;
66import android.text.TextPaint;
67import android.text.TextUtils;
68import android.text.TextUtils.TruncateAt;
69import android.text.TextWatcher;
70import android.text.method.AllCapsTransformationMethod;
71import android.text.method.ArrowKeyMovementMethod;
72import android.text.method.DateKeyListener;
73import android.text.method.DateTimeKeyListener;
74import android.text.method.DialerKeyListener;
75import android.text.method.DigitsKeyListener;
76import android.text.method.KeyListener;
77import android.text.method.LinkMovementMethod;
78import android.text.method.MetaKeyKeyListener;
79import android.text.method.MovementMethod;
80import android.text.method.PasswordTransformationMethod;
81import android.text.method.SingleLineTransformationMethod;
82import android.text.method.TextKeyListener;
83import android.text.method.TimeKeyListener;
84import android.text.method.TransformationMethod;
85import android.text.method.TransformationMethod2;
86import android.text.method.WordIterator;
87import android.text.style.CharacterStyle;
88import android.text.style.ClickableSpan;
89import android.text.style.EasyEditSpan;
90import android.text.style.ParagraphStyle;
91import android.text.style.SpellCheckSpan;
92import android.text.style.SuggestionRangeSpan;
93import android.text.style.SuggestionSpan;
94import android.text.style.TextAppearanceSpan;
95import android.text.style.URLSpan;
96import android.text.style.UpdateAppearance;
97import android.text.util.Linkify;
98import android.util.AttributeSet;
99import android.util.DisplayMetrics;
100import android.util.FloatMath;
101import android.util.Log;
102import android.util.TypedValue;
103import android.view.ActionMode;
104import android.view.ActionMode.Callback;
105import android.view.DisplayList;
106import android.view.DragEvent;
107import android.view.Gravity;
108import android.view.HapticFeedbackConstants;
109import android.view.HardwareCanvas;
110import android.view.KeyCharacterMap;
111import android.view.KeyEvent;
112import android.view.LayoutInflater;
113import android.view.Menu;
114import android.view.MenuItem;
115import android.view.MotionEvent;
116import android.view.View;
117import android.view.ViewConfiguration;
118import android.view.ViewDebug;
119import android.view.ViewGroup;
120import android.view.ViewGroup.LayoutParams;
121import android.view.ViewParent;
122import android.view.ViewRootImpl;
123import android.view.ViewTreeObserver;
124import android.view.WindowManager;
125import android.view.accessibility.AccessibilityEvent;
126import android.view.accessibility.AccessibilityManager;
127import android.view.accessibility.AccessibilityNodeInfo;
128import android.view.animation.AnimationUtils;
129import android.view.inputmethod.BaseInputConnection;
130import android.view.inputmethod.CompletionInfo;
131import android.view.inputmethod.CorrectionInfo;
132import android.view.inputmethod.EditorInfo;
133import android.view.inputmethod.ExtractedText;
134import android.view.inputmethod.ExtractedTextRequest;
135import android.view.inputmethod.InputConnection;
136import android.view.inputmethod.InputMethodManager;
137import android.view.textservice.SpellCheckerSubtype;
138import android.view.textservice.TextServicesManager;
139import android.widget.AdapterView.OnItemClickListener;
140import android.widget.RemoteViews.RemoteView;
141
142import com.android.internal.util.FastMath;
143import com.android.internal.widget.EditableInputConnection;
144
145import org.xmlpull.v1.XmlPullParserException;
146
147import java.io.IOException;
148import java.lang.ref.WeakReference;
149import java.text.BreakIterator;
150import java.util.ArrayList;
151import java.util.Arrays;
152import java.util.Comparator;
153import java.util.HashMap;
154import java.util.Locale;
155
156/**
157 * Displays text to the user and optionally allows them to edit it.  A TextView
158 * is a complete text editor, however the basic class is configured to not
159 * allow editing; see {@link EditText} for a subclass that configures the text
160 * view for editing.
161 *
162 * <p>
163 * <b>XML attributes</b>
164 * <p>
165 * See {@link android.R.styleable#TextView TextView Attributes},
166 * {@link android.R.styleable#View View Attributes}
167 *
168 * @attr ref android.R.styleable#TextView_text
169 * @attr ref android.R.styleable#TextView_bufferType
170 * @attr ref android.R.styleable#TextView_hint
171 * @attr ref android.R.styleable#TextView_textColor
172 * @attr ref android.R.styleable#TextView_textColorHighlight
173 * @attr ref android.R.styleable#TextView_textColorHint
174 * @attr ref android.R.styleable#TextView_textAppearance
175 * @attr ref android.R.styleable#TextView_textColorLink
176 * @attr ref android.R.styleable#TextView_textSize
177 * @attr ref android.R.styleable#TextView_textScaleX
178 * @attr ref android.R.styleable#TextView_typeface
179 * @attr ref android.R.styleable#TextView_textStyle
180 * @attr ref android.R.styleable#TextView_cursorVisible
181 * @attr ref android.R.styleable#TextView_maxLines
182 * @attr ref android.R.styleable#TextView_maxHeight
183 * @attr ref android.R.styleable#TextView_lines
184 * @attr ref android.R.styleable#TextView_height
185 * @attr ref android.R.styleable#TextView_minLines
186 * @attr ref android.R.styleable#TextView_minHeight
187 * @attr ref android.R.styleable#TextView_maxEms
188 * @attr ref android.R.styleable#TextView_maxWidth
189 * @attr ref android.R.styleable#TextView_ems
190 * @attr ref android.R.styleable#TextView_width
191 * @attr ref android.R.styleable#TextView_minEms
192 * @attr ref android.R.styleable#TextView_minWidth
193 * @attr ref android.R.styleable#TextView_gravity
194 * @attr ref android.R.styleable#TextView_scrollHorizontally
195 * @attr ref android.R.styleable#TextView_password
196 * @attr ref android.R.styleable#TextView_singleLine
197 * @attr ref android.R.styleable#TextView_selectAllOnFocus
198 * @attr ref android.R.styleable#TextView_includeFontPadding
199 * @attr ref android.R.styleable#TextView_maxLength
200 * @attr ref android.R.styleable#TextView_shadowColor
201 * @attr ref android.R.styleable#TextView_shadowDx
202 * @attr ref android.R.styleable#TextView_shadowDy
203 * @attr ref android.R.styleable#TextView_shadowRadius
204 * @attr ref android.R.styleable#TextView_autoLink
205 * @attr ref android.R.styleable#TextView_linksClickable
206 * @attr ref android.R.styleable#TextView_numeric
207 * @attr ref android.R.styleable#TextView_digits
208 * @attr ref android.R.styleable#TextView_phoneNumber
209 * @attr ref android.R.styleable#TextView_inputMethod
210 * @attr ref android.R.styleable#TextView_capitalize
211 * @attr ref android.R.styleable#TextView_autoText
212 * @attr ref android.R.styleable#TextView_editable
213 * @attr ref android.R.styleable#TextView_freezesText
214 * @attr ref android.R.styleable#TextView_ellipsize
215 * @attr ref android.R.styleable#TextView_drawableTop
216 * @attr ref android.R.styleable#TextView_drawableBottom
217 * @attr ref android.R.styleable#TextView_drawableRight
218 * @attr ref android.R.styleable#TextView_drawableLeft
219 * @attr ref android.R.styleable#TextView_drawableStart
220 * @attr ref android.R.styleable#TextView_drawableEnd
221 * @attr ref android.R.styleable#TextView_drawablePadding
222 * @attr ref android.R.styleable#TextView_lineSpacingExtra
223 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
224 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
225 * @attr ref android.R.styleable#TextView_inputType
226 * @attr ref android.R.styleable#TextView_imeOptions
227 * @attr ref android.R.styleable#TextView_privateImeOptions
228 * @attr ref android.R.styleable#TextView_imeActionLabel
229 * @attr ref android.R.styleable#TextView_imeActionId
230 * @attr ref android.R.styleable#TextView_editorExtras
231 */
232@RemoteView
233public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
234    static final String LOG_TAG = "TextView";
235    static final boolean DEBUG_EXTRACT = false;
236
237    // Enum for the "typeface" XML parameter.
238    // TODO: How can we get this from the XML instead of hardcoding it here?
239    private static final int SANS = 1;
240    private static final int SERIF = 2;
241    private static final int MONOSPACE = 3;
242
243    // Bitfield for the "numeric" XML parameter.
244    // TODO: How can we get this from the XML instead of hardcoding it here?
245    private static final int SIGNED = 2;
246    private static final int DECIMAL = 4;
247
248    /**
249     * Draw marquee text with fading edges as usual
250     */
251    private static final int MARQUEE_FADE_NORMAL = 0;
252
253    /**
254     * Draw marquee text as ellipsize end while inactive instead of with the fade.
255     * (Useful for devices where the fade can be expensive if overdone)
256     */
257    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
258
259    /**
260     * Draw marquee text with fading edges because it is currently active/animating.
261     */
262    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
263
264    private static final int LINES = 1;
265    private static final int EMS = LINES;
266    private static final int PIXELS = 2;
267
268    private static final RectF TEMP_RECTF = new RectF();
269    private static final float[] TEMP_POSITION = new float[2];
270
271    // XXX should be much larger
272    private static final int VERY_WIDE = 1024*1024;
273    private static final int BLINK = 500;
274    private static final int ANIMATED_SCROLL_GAP = 250;
275
276    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
277    private static final Spanned EMPTY_SPANNED = new SpannedString("");
278
279    private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20;
280    private static final int CHANGE_WATCHER_PRIORITY = 100;
281
282    // New state used to change background based on whether this TextView is multiline.
283    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
284
285    // System wide time for last cut or copy action.
286    private static long LAST_CUT_OR_COPY_TIME;
287
288    private int mCurrentAlpha = 255;
289
290    private ColorStateList mTextColor;
291    private ColorStateList mHintTextColor;
292    private ColorStateList mLinkTextColor;
293    private int mCurTextColor;
294    private int mCurHintTextColor;
295    private boolean mFreezesText;
296    private boolean mTemporaryDetach;
297    private boolean mDispatchTemporaryDetach;
298
299    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
300    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
301
302    private float mShadowRadius, mShadowDx, mShadowDy;
303
304    private boolean mPreDrawRegistered;
305
306    private TextUtils.TruncateAt mEllipsize;
307
308    static class Drawables {
309        final Rect mCompoundRect = new Rect();
310        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight,
311                mDrawableStart, mDrawableEnd;
312        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
313                mDrawableSizeStart, mDrawableSizeEnd;
314        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
315                mDrawableHeightStart, mDrawableHeightEnd;
316        int mDrawablePadding;
317    }
318    private Drawables mDrawables;
319
320    private CharWrapper mCharWrapper;
321
322    private Marquee mMarquee;
323    private boolean mRestartMarquee;
324
325    private int mMarqueeRepeatLimit = 3;
326
327    // The alignment to pass to Layout, or null if not resolved.
328    private Layout.Alignment mLayoutAlignment;
329
330    private boolean mResolvedDrawables;
331
332    /**
333     * On some devices the fading edges add a performance penalty if used
334     * extensively in the same layout. This mode indicates how the marquee
335     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
336     */
337    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
338
339    /**
340     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
341     * the layout that should be used when the mode switches.
342     */
343    private Layout mSavedMarqueeModeLayout;
344
345    @ViewDebug.ExportedProperty(category = "text")
346    private CharSequence mText;
347    private CharSequence mTransformed;
348    private BufferType mBufferType = BufferType.NORMAL;
349
350    private CharSequence mHint;
351    private Layout mHintLayout;
352
353    private MovementMethod mMovement;
354
355    private TransformationMethod mTransformation;
356    private boolean mAllowTransformationLengthChange;
357    private ChangeWatcher mChangeWatcher;
358
359    private ArrayList<TextWatcher> mListeners;
360
361    // display attributes
362    private final TextPaint mTextPaint;
363    private boolean mUserSetTextScaleX;
364    private Layout mLayout;
365
366    private int mGravity = Gravity.TOP | Gravity.START;
367    private boolean mHorizontallyScrolling;
368
369    private int mAutoLinkMask;
370    private boolean mLinksClickable = true;
371
372    private float mSpacingMult = 1.0f;
373    private float mSpacingAdd = 0.0f;
374
375    private int mMaximum = Integer.MAX_VALUE;
376    private int mMaxMode = LINES;
377    private int mMinimum = 0;
378    private int mMinMode = LINES;
379
380    private int mOldMaximum = mMaximum;
381    private int mOldMaxMode = mMaxMode;
382
383    private int mMaxWidth = Integer.MAX_VALUE;
384    private int mMaxWidthMode = PIXELS;
385    private int mMinWidth = 0;
386    private int mMinWidthMode = PIXELS;
387
388    private boolean mSingleLine;
389    private int mDesiredHeightAtMeasure = -1;
390    private boolean mIncludePad = true;
391
392    // tmp primitives, so we don't alloc them on each draw
393    private Rect mTempRect;
394    private long mLastScroll;
395    private Scroller mScroller;
396
397    private BoringLayout.Metrics mBoring, mHintBoring;
398    private BoringLayout mSavedLayout, mSavedHintLayout;
399
400    private TextDirectionHeuristic mTextDir;
401
402    private InputFilter[] mFilters = NO_FILTERS;
403
404    // It is possible to have a selection even when mEditor is null (programmatically set, like when
405    // a link is pressed). These highlight-related fields do not go in mEditor.
406    private int mHighlightColor = 0x6633B5E5;
407    private Path mHighlightPath;
408    private final Paint mHighlightPaint;
409    private boolean mHighlightPathBogus = true;
410
411    // Although these fields are specific to editable text, they are not added to Editor because
412    // they are defined by the TextView's style and are theme-dependent.
413    private int mCursorDrawableRes;
414    // These four fields, could be moved to Editor, since we know their default values and we
415    // could condition the creation of the Editor to a non standard value. This is however
416    // brittle since the hardcoded values here (such as
417    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
418    // default style is modified.
419    private int mTextSelectHandleLeftRes;
420    private int mTextSelectHandleRightRes;
421    private int mTextSelectHandleRes;
422    private int mTextEditSuggestionItemLayout;
423
424    /**
425     * EditText specific data, created on demand when one of the Editor fields is used.
426     * See {@link #createEditorIfNeeded(String)}.
427     */
428    private Editor mEditor;
429
430    /*
431     * Kick-start the font cache for the zygote process (to pay the cost of
432     * initializing freetype for our default font only once).
433     */
434    static {
435        Paint p = new Paint();
436        p.setAntiAlias(true);
437        // We don't care about the result, just the side-effect of measuring.
438        p.measureText("H");
439    }
440
441    /**
442     * Interface definition for a callback to be invoked when an action is
443     * performed on the editor.
444     */
445    public interface OnEditorActionListener {
446        /**
447         * Called when an action is being performed.
448         *
449         * @param v The view that was clicked.
450         * @param actionId Identifier of the action.  This will be either the
451         * identifier you supplied, or {@link EditorInfo#IME_NULL
452         * EditorInfo.IME_NULL} if being called due to the enter key
453         * being pressed.
454         * @param event If triggered by an enter key, this is the event;
455         * otherwise, this is null.
456         * @return Return true if you have consumed the action, else false.
457         */
458        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
459    }
460
461    public TextView(Context context) {
462        this(context, null);
463    }
464
465    public TextView(Context context, AttributeSet attrs) {
466        this(context, attrs, com.android.internal.R.attr.textViewStyle);
467    }
468
469    @SuppressWarnings("deprecation")
470    public TextView(Context context, AttributeSet attrs, int defStyle) {
471        super(context, attrs, defStyle);
472        mText = "";
473
474        final Resources res = getResources();
475        final CompatibilityInfo compat = res.getCompatibilityInfo();
476
477        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
478        mTextPaint.density = res.getDisplayMetrics().density;
479        mTextPaint.setCompatibilityScaling(compat.applicationScale);
480
481        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
482        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
483
484        mMovement = getDefaultMovementMethod();
485
486        mTransformation = null;
487
488        int textColorHighlight = 0;
489        ColorStateList textColor = null;
490        ColorStateList textColorHint = null;
491        ColorStateList textColorLink = null;
492        int textSize = 15;
493        int typefaceIndex = -1;
494        int styleIndex = -1;
495        boolean allCaps = false;
496
497        final Resources.Theme theme = context.getTheme();
498
499        /*
500         * Look the appearance up without checking first if it exists because
501         * almost every TextView has one and it greatly simplifies the logic
502         * to be able to parse the appearance first and then let specific tags
503         * for this View override it.
504         */
505        TypedArray a = theme.obtainStyledAttributes(
506                    attrs, com.android.internal.R.styleable.TextViewAppearance, defStyle, 0);
507        TypedArray appearance = null;
508        int ap = a.getResourceId(
509                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
510        a.recycle();
511        if (ap != -1) {
512            appearance = theme.obtainStyledAttributes(
513                    ap, com.android.internal.R.styleable.TextAppearance);
514        }
515        if (appearance != null) {
516            int n = appearance.getIndexCount();
517            for (int i = 0; i < n; i++) {
518                int attr = appearance.getIndex(i);
519
520                switch (attr) {
521                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
522                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
523                    break;
524
525                case com.android.internal.R.styleable.TextAppearance_textColor:
526                    textColor = appearance.getColorStateList(attr);
527                    break;
528
529                case com.android.internal.R.styleable.TextAppearance_textColorHint:
530                    textColorHint = appearance.getColorStateList(attr);
531                    break;
532
533                case com.android.internal.R.styleable.TextAppearance_textColorLink:
534                    textColorLink = appearance.getColorStateList(attr);
535                    break;
536
537                case com.android.internal.R.styleable.TextAppearance_textSize:
538                    textSize = appearance.getDimensionPixelSize(attr, textSize);
539                    break;
540
541                case com.android.internal.R.styleable.TextAppearance_typeface:
542                    typefaceIndex = appearance.getInt(attr, -1);
543                    break;
544
545                case com.android.internal.R.styleable.TextAppearance_textStyle:
546                    styleIndex = appearance.getInt(attr, -1);
547                    break;
548
549                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
550                    allCaps = appearance.getBoolean(attr, false);
551                    break;
552                }
553            }
554
555            appearance.recycle();
556        }
557
558        boolean editable = getDefaultEditable();
559        CharSequence inputMethod = null;
560        int numeric = 0;
561        CharSequence digits = null;
562        boolean phone = false;
563        boolean autotext = false;
564        int autocap = -1;
565        int buffertype = 0;
566        boolean selectallonfocus = false;
567        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
568            drawableBottom = null, drawableStart = null, drawableEnd = null;
569        int drawablePadding = 0;
570        int ellipsize = -1;
571        boolean singleLine = false;
572        int maxlength = -1;
573        CharSequence text = "";
574        CharSequence hint = null;
575        int shadowcolor = 0;
576        float dx = 0, dy = 0, r = 0;
577        boolean password = false;
578        int inputType = EditorInfo.TYPE_NULL;
579
580        a = theme.obtainStyledAttributes(
581                    attrs, com.android.internal.R.styleable.TextView, defStyle, 0);
582
583        int n = a.getIndexCount();
584        for (int i = 0; i < n; i++) {
585            int attr = a.getIndex(i);
586
587            switch (attr) {
588            case com.android.internal.R.styleable.TextView_editable:
589                editable = a.getBoolean(attr, editable);
590                break;
591
592            case com.android.internal.R.styleable.TextView_inputMethod:
593                inputMethod = a.getText(attr);
594                break;
595
596            case com.android.internal.R.styleable.TextView_numeric:
597                numeric = a.getInt(attr, numeric);
598                break;
599
600            case com.android.internal.R.styleable.TextView_digits:
601                digits = a.getText(attr);
602                break;
603
604            case com.android.internal.R.styleable.TextView_phoneNumber:
605                phone = a.getBoolean(attr, phone);
606                break;
607
608            case com.android.internal.R.styleable.TextView_autoText:
609                autotext = a.getBoolean(attr, autotext);
610                break;
611
612            case com.android.internal.R.styleable.TextView_capitalize:
613                autocap = a.getInt(attr, autocap);
614                break;
615
616            case com.android.internal.R.styleable.TextView_bufferType:
617                buffertype = a.getInt(attr, buffertype);
618                break;
619
620            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
621                selectallonfocus = a.getBoolean(attr, selectallonfocus);
622                break;
623
624            case com.android.internal.R.styleable.TextView_autoLink:
625                mAutoLinkMask = a.getInt(attr, 0);
626                break;
627
628            case com.android.internal.R.styleable.TextView_linksClickable:
629                mLinksClickable = a.getBoolean(attr, true);
630                break;
631
632            case com.android.internal.R.styleable.TextView_drawableLeft:
633                drawableLeft = a.getDrawable(attr);
634                break;
635
636            case com.android.internal.R.styleable.TextView_drawableTop:
637                drawableTop = a.getDrawable(attr);
638                break;
639
640            case com.android.internal.R.styleable.TextView_drawableRight:
641                drawableRight = a.getDrawable(attr);
642                break;
643
644            case com.android.internal.R.styleable.TextView_drawableBottom:
645                drawableBottom = a.getDrawable(attr);
646                break;
647
648            case com.android.internal.R.styleable.TextView_drawableStart:
649                drawableStart = a.getDrawable(attr);
650                break;
651
652            case com.android.internal.R.styleable.TextView_drawableEnd:
653                drawableEnd = a.getDrawable(attr);
654                break;
655
656            case com.android.internal.R.styleable.TextView_drawablePadding:
657                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
658                break;
659
660            case com.android.internal.R.styleable.TextView_maxLines:
661                setMaxLines(a.getInt(attr, -1));
662                break;
663
664            case com.android.internal.R.styleable.TextView_maxHeight:
665                setMaxHeight(a.getDimensionPixelSize(attr, -1));
666                break;
667
668            case com.android.internal.R.styleable.TextView_lines:
669                setLines(a.getInt(attr, -1));
670                break;
671
672            case com.android.internal.R.styleable.TextView_height:
673                setHeight(a.getDimensionPixelSize(attr, -1));
674                break;
675
676            case com.android.internal.R.styleable.TextView_minLines:
677                setMinLines(a.getInt(attr, -1));
678                break;
679
680            case com.android.internal.R.styleable.TextView_minHeight:
681                setMinHeight(a.getDimensionPixelSize(attr, -1));
682                break;
683
684            case com.android.internal.R.styleable.TextView_maxEms:
685                setMaxEms(a.getInt(attr, -1));
686                break;
687
688            case com.android.internal.R.styleable.TextView_maxWidth:
689                setMaxWidth(a.getDimensionPixelSize(attr, -1));
690                break;
691
692            case com.android.internal.R.styleable.TextView_ems:
693                setEms(a.getInt(attr, -1));
694                break;
695
696            case com.android.internal.R.styleable.TextView_width:
697                setWidth(a.getDimensionPixelSize(attr, -1));
698                break;
699
700            case com.android.internal.R.styleable.TextView_minEms:
701                setMinEms(a.getInt(attr, -1));
702                break;
703
704            case com.android.internal.R.styleable.TextView_minWidth:
705                setMinWidth(a.getDimensionPixelSize(attr, -1));
706                break;
707
708            case com.android.internal.R.styleable.TextView_gravity:
709                setGravity(a.getInt(attr, -1));
710                break;
711
712            case com.android.internal.R.styleable.TextView_hint:
713                hint = a.getText(attr);
714                break;
715
716            case com.android.internal.R.styleable.TextView_text:
717                text = a.getText(attr);
718                break;
719
720            case com.android.internal.R.styleable.TextView_scrollHorizontally:
721                if (a.getBoolean(attr, false)) {
722                    setHorizontallyScrolling(true);
723                }
724                break;
725
726            case com.android.internal.R.styleable.TextView_singleLine:
727                singleLine = a.getBoolean(attr, singleLine);
728                break;
729
730            case com.android.internal.R.styleable.TextView_ellipsize:
731                ellipsize = a.getInt(attr, ellipsize);
732                break;
733
734            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
735                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
736                break;
737
738            case com.android.internal.R.styleable.TextView_includeFontPadding:
739                if (!a.getBoolean(attr, true)) {
740                    setIncludeFontPadding(false);
741                }
742                break;
743
744            case com.android.internal.R.styleable.TextView_cursorVisible:
745                if (!a.getBoolean(attr, true)) {
746                    setCursorVisible(false);
747                }
748                break;
749
750            case com.android.internal.R.styleable.TextView_maxLength:
751                maxlength = a.getInt(attr, -1);
752                break;
753
754            case com.android.internal.R.styleable.TextView_textScaleX:
755                setTextScaleX(a.getFloat(attr, 1.0f));
756                break;
757
758            case com.android.internal.R.styleable.TextView_freezesText:
759                mFreezesText = a.getBoolean(attr, false);
760                break;
761
762            case com.android.internal.R.styleable.TextView_shadowColor:
763                shadowcolor = a.getInt(attr, 0);
764                break;
765
766            case com.android.internal.R.styleable.TextView_shadowDx:
767                dx = a.getFloat(attr, 0);
768                break;
769
770            case com.android.internal.R.styleable.TextView_shadowDy:
771                dy = a.getFloat(attr, 0);
772                break;
773
774            case com.android.internal.R.styleable.TextView_shadowRadius:
775                r = a.getFloat(attr, 0);
776                break;
777
778            case com.android.internal.R.styleable.TextView_enabled:
779                setEnabled(a.getBoolean(attr, isEnabled()));
780                break;
781
782            case com.android.internal.R.styleable.TextView_textColorHighlight:
783                textColorHighlight = a.getColor(attr, textColorHighlight);
784                break;
785
786            case com.android.internal.R.styleable.TextView_textColor:
787                textColor = a.getColorStateList(attr);
788                break;
789
790            case com.android.internal.R.styleable.TextView_textColorHint:
791                textColorHint = a.getColorStateList(attr);
792                break;
793
794            case com.android.internal.R.styleable.TextView_textColorLink:
795                textColorLink = a.getColorStateList(attr);
796                break;
797
798            case com.android.internal.R.styleable.TextView_textSize:
799                textSize = a.getDimensionPixelSize(attr, textSize);
800                break;
801
802            case com.android.internal.R.styleable.TextView_typeface:
803                typefaceIndex = a.getInt(attr, typefaceIndex);
804                break;
805
806            case com.android.internal.R.styleable.TextView_textStyle:
807                styleIndex = a.getInt(attr, styleIndex);
808                break;
809
810            case com.android.internal.R.styleable.TextView_password:
811                password = a.getBoolean(attr, password);
812                break;
813
814            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
815                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
816                break;
817
818            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
819                mSpacingMult = a.getFloat(attr, mSpacingMult);
820                break;
821
822            case com.android.internal.R.styleable.TextView_inputType:
823                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
824                break;
825
826            case com.android.internal.R.styleable.TextView_imeOptions:
827                createEditorIfNeeded("IME options specified in constructor");
828                if (getEditor().mInputContentType == null) {
829                    getEditor().mInputContentType = new InputContentType();
830                }
831                getEditor().mInputContentType.imeOptions = a.getInt(attr,
832                        getEditor().mInputContentType.imeOptions);
833                break;
834
835            case com.android.internal.R.styleable.TextView_imeActionLabel:
836                createEditorIfNeeded("IME action label specified in constructor");
837                if (getEditor().mInputContentType == null) {
838                    getEditor().mInputContentType = new InputContentType();
839                }
840                getEditor().mInputContentType.imeActionLabel = a.getText(attr);
841                break;
842
843            case com.android.internal.R.styleable.TextView_imeActionId:
844                createEditorIfNeeded("IME action id specified in constructor");
845                if (getEditor().mInputContentType == null) {
846                    getEditor().mInputContentType = new InputContentType();
847                }
848                getEditor().mInputContentType.imeActionId = a.getInt(attr,
849                        getEditor().mInputContentType.imeActionId);
850                break;
851
852            case com.android.internal.R.styleable.TextView_privateImeOptions:
853                setPrivateImeOptions(a.getString(attr));
854                break;
855
856            case com.android.internal.R.styleable.TextView_editorExtras:
857                try {
858                    setInputExtras(a.getResourceId(attr, 0));
859                } catch (XmlPullParserException e) {
860                    Log.w(LOG_TAG, "Failure reading input extras", e);
861                } catch (IOException e) {
862                    Log.w(LOG_TAG, "Failure reading input extras", e);
863                }
864                break;
865
866            case com.android.internal.R.styleable.TextView_textCursorDrawable:
867                mCursorDrawableRes = a.getResourceId(attr, 0);
868                break;
869
870            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
871                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
872                break;
873
874            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
875                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
876                break;
877
878            case com.android.internal.R.styleable.TextView_textSelectHandle:
879                mTextSelectHandleRes = a.getResourceId(attr, 0);
880                break;
881
882            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
883                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
884                break;
885
886            case com.android.internal.R.styleable.TextView_textIsSelectable:
887                setTextIsSelectable(a.getBoolean(attr, false));
888                break;
889
890            case com.android.internal.R.styleable.TextView_textAllCaps:
891                allCaps = a.getBoolean(attr, false);
892                break;
893            }
894        }
895        a.recycle();
896
897        BufferType bufferType = BufferType.EDITABLE;
898
899        final int variation =
900                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
901        final boolean passwordInputType = variation
902                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
903        final boolean webPasswordInputType = variation
904                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
905        final boolean numberPasswordInputType = variation
906                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
907
908        if (inputMethod != null) {
909            Class<?> c;
910
911            try {
912                c = Class.forName(inputMethod.toString());
913            } catch (ClassNotFoundException ex) {
914                throw new RuntimeException(ex);
915            }
916
917            try {
918                createEditorIfNeeded("inputMethod in ctor");
919                getEditor().mKeyListener = (KeyListener) c.newInstance();
920            } catch (InstantiationException ex) {
921                throw new RuntimeException(ex);
922            } catch (IllegalAccessException ex) {
923                throw new RuntimeException(ex);
924            }
925            try {
926                getEditor().mInputType = inputType != EditorInfo.TYPE_NULL
927                        ? inputType
928                        : getEditor().mKeyListener.getInputType();
929            } catch (IncompatibleClassChangeError e) {
930                getEditor().mInputType = EditorInfo.TYPE_CLASS_TEXT;
931            }
932        } else if (digits != null) {
933            createEditorIfNeeded("digits in ctor");
934            getEditor().mKeyListener = DigitsKeyListener.getInstance(digits.toString());
935            // If no input type was specified, we will default to generic
936            // text, since we can't tell the IME about the set of digits
937            // that was selected.
938            getEditor().mInputType = inputType != EditorInfo.TYPE_NULL
939                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
940        } else if (inputType != EditorInfo.TYPE_NULL) {
941            setInputType(inputType, true);
942            // If set, the input type overrides what was set using the deprecated singleLine flag.
943            singleLine = !isMultilineInputType(inputType);
944        } else if (phone) {
945            createEditorIfNeeded("dialer in ctor");
946            getEditor().mKeyListener = DialerKeyListener.getInstance();
947            getEditor().mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
948        } else if (numeric != 0) {
949            createEditorIfNeeded("numeric in ctor");
950            getEditor().mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
951                                                   (numeric & DECIMAL) != 0);
952            inputType = EditorInfo.TYPE_CLASS_NUMBER;
953            if ((numeric & SIGNED) != 0) {
954                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
955            }
956            if ((numeric & DECIMAL) != 0) {
957                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
958            }
959            getEditor().mInputType = inputType;
960        } else if (autotext || autocap != -1) {
961            TextKeyListener.Capitalize cap;
962
963            inputType = EditorInfo.TYPE_CLASS_TEXT;
964
965            switch (autocap) {
966            case 1:
967                cap = TextKeyListener.Capitalize.SENTENCES;
968                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
969                break;
970
971            case 2:
972                cap = TextKeyListener.Capitalize.WORDS;
973                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
974                break;
975
976            case 3:
977                cap = TextKeyListener.Capitalize.CHARACTERS;
978                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
979                break;
980
981            default:
982                cap = TextKeyListener.Capitalize.NONE;
983                break;
984            }
985
986            createEditorIfNeeded("text input in ctor");
987            getEditor().mKeyListener = TextKeyListener.getInstance(autotext, cap);
988            getEditor().mInputType = inputType;
989        } else if (isTextSelectable()) {
990            // Prevent text changes from keyboard.
991            if (mEditor != null) {
992                getEditor().mKeyListener = null;
993                getEditor().mInputType = EditorInfo.TYPE_NULL;
994            }
995            bufferType = BufferType.SPANNABLE;
996            // So that selection can be changed using arrow keys and touch is handled.
997            setMovementMethod(ArrowKeyMovementMethod.getInstance());
998        } else if (editable) {
999            createEditorIfNeeded("editable input in ctor");
1000            getEditor().mKeyListener = TextKeyListener.getInstance();
1001            getEditor().mInputType = EditorInfo.TYPE_CLASS_TEXT;
1002        } else {
1003            if (mEditor != null) getEditor().mKeyListener = null;
1004
1005            switch (buffertype) {
1006                case 0:
1007                    bufferType = BufferType.NORMAL;
1008                    break;
1009                case 1:
1010                    bufferType = BufferType.SPANNABLE;
1011                    break;
1012                case 2:
1013                    bufferType = BufferType.EDITABLE;
1014                    break;
1015            }
1016        }
1017
1018        if (mEditor != null) getEditor().adjustInputType(password, passwordInputType, webPasswordInputType,
1019                numberPasswordInputType);
1020
1021        if (selectallonfocus) {
1022            createEditorIfNeeded("selectallonfocus in constructor");
1023            getEditor().mSelectAllOnFocus = true;
1024
1025            if (bufferType == BufferType.NORMAL)
1026                bufferType = BufferType.SPANNABLE;
1027        }
1028
1029        setCompoundDrawablesWithIntrinsicBounds(
1030            drawableLeft, drawableTop, drawableRight, drawableBottom);
1031        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1032        setCompoundDrawablePadding(drawablePadding);
1033
1034        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1035        // of lines of height are unchanged for multi-line TextViews.
1036        setInputTypeSingleLine(singleLine);
1037        applySingleLine(singleLine, singleLine, singleLine);
1038
1039        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1040                ellipsize = 3; // END
1041        }
1042
1043        switch (ellipsize) {
1044            case 1:
1045                setEllipsize(TextUtils.TruncateAt.START);
1046                break;
1047            case 2:
1048                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1049                break;
1050            case 3:
1051                setEllipsize(TextUtils.TruncateAt.END);
1052                break;
1053            case 4:
1054                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1055                    setHorizontalFadingEdgeEnabled(true);
1056                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1057                } else {
1058                    setHorizontalFadingEdgeEnabled(false);
1059                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1060                }
1061                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1062                break;
1063        }
1064
1065        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1066        setHintTextColor(textColorHint);
1067        setLinkTextColor(textColorLink);
1068        if (textColorHighlight != 0) {
1069            setHighlightColor(textColorHighlight);
1070        }
1071        setRawTextSize(textSize);
1072
1073        if (allCaps) {
1074            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1075        }
1076
1077        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1078            setTransformationMethod(PasswordTransformationMethod.getInstance());
1079            typefaceIndex = MONOSPACE;
1080        } else if (mEditor != null && (getEditor().mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1081                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1082            typefaceIndex = MONOSPACE;
1083        }
1084
1085        setTypefaceByIndex(typefaceIndex, styleIndex);
1086
1087        if (shadowcolor != 0) {
1088            setShadowLayer(r, dx, dy, shadowcolor);
1089        }
1090
1091        if (maxlength >= 0) {
1092            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1093        } else {
1094            setFilters(NO_FILTERS);
1095        }
1096
1097        setText(text, bufferType);
1098        if (hint != null) setHint(hint);
1099
1100        /*
1101         * Views are not normally focusable unless specified to be.
1102         * However, TextViews that have input or movement methods *are*
1103         * focusable by default.
1104         */
1105        a = context.obtainStyledAttributes(attrs,
1106                                           com.android.internal.R.styleable.View,
1107                                           defStyle, 0);
1108
1109        boolean focusable = mMovement != null || getKeyListener() != null;
1110        boolean clickable = focusable;
1111        boolean longClickable = focusable;
1112
1113        n = a.getIndexCount();
1114        for (int i = 0; i < n; i++) {
1115            int attr = a.getIndex(i);
1116
1117            switch (attr) {
1118            case com.android.internal.R.styleable.View_focusable:
1119                focusable = a.getBoolean(attr, focusable);
1120                break;
1121
1122            case com.android.internal.R.styleable.View_clickable:
1123                clickable = a.getBoolean(attr, clickable);
1124                break;
1125
1126            case com.android.internal.R.styleable.View_longClickable:
1127                longClickable = a.getBoolean(attr, longClickable);
1128                break;
1129            }
1130        }
1131        a.recycle();
1132
1133        setFocusable(focusable);
1134        setClickable(clickable);
1135        setLongClickable(longClickable);
1136
1137        prepareCursorControllers();
1138    }
1139
1140    private void setTypefaceByIndex(int typefaceIndex, int styleIndex) {
1141        Typeface tf = null;
1142        switch (typefaceIndex) {
1143            case SANS:
1144                tf = Typeface.SANS_SERIF;
1145                break;
1146
1147            case SERIF:
1148                tf = Typeface.SERIF;
1149                break;
1150
1151            case MONOSPACE:
1152                tf = Typeface.MONOSPACE;
1153                break;
1154        }
1155
1156        setTypeface(tf, styleIndex);
1157    }
1158
1159    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1160        boolean hasRelativeDrawables = (start != null) || (end != null);
1161        if (hasRelativeDrawables) {
1162            Drawables dr = mDrawables;
1163            if (dr == null) {
1164                mDrawables = dr = new Drawables();
1165            }
1166            final Rect compoundRect = dr.mCompoundRect;
1167            int[] state = getDrawableState();
1168            if (start != null) {
1169                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1170                start.setState(state);
1171                start.copyBounds(compoundRect);
1172                start.setCallback(this);
1173
1174                dr.mDrawableStart = start;
1175                dr.mDrawableSizeStart = compoundRect.width();
1176                dr.mDrawableHeightStart = compoundRect.height();
1177            } else {
1178                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1179            }
1180            if (end != null) {
1181                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1182                end.setState(state);
1183                end.copyBounds(compoundRect);
1184                end.setCallback(this);
1185
1186                dr.mDrawableEnd = end;
1187                dr.mDrawableSizeEnd = compoundRect.width();
1188                dr.mDrawableHeightEnd = compoundRect.height();
1189            } else {
1190                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1191            }
1192        }
1193    }
1194
1195    @Override
1196    public void setEnabled(boolean enabled) {
1197        if (enabled == isEnabled()) {
1198            return;
1199        }
1200
1201        if (!enabled) {
1202            // Hide the soft input if the currently active TextView is disabled
1203            InputMethodManager imm = InputMethodManager.peekInstance();
1204            if (imm != null && imm.isActive(this)) {
1205                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1206            }
1207        }
1208
1209        super.setEnabled(enabled);
1210
1211        if (enabled) {
1212            // Make sure IME is updated with current editor info.
1213            InputMethodManager imm = InputMethodManager.peekInstance();
1214            if (imm != null) imm.restartInput(this);
1215        }
1216
1217        if (mEditor != null) getEditor().invalidateTextDisplayList();
1218        prepareCursorControllers();
1219
1220        // start or stop the cursor blinking as appropriate
1221        makeBlink();
1222    }
1223
1224    /**
1225     * Sets the typeface and style in which the text should be displayed,
1226     * and turns on the fake bold and italic bits in the Paint if the
1227     * Typeface that you provided does not have all the bits in the
1228     * style that you specified.
1229     *
1230     * @attr ref android.R.styleable#TextView_typeface
1231     * @attr ref android.R.styleable#TextView_textStyle
1232     */
1233    public void setTypeface(Typeface tf, int style) {
1234        if (style > 0) {
1235            if (tf == null) {
1236                tf = Typeface.defaultFromStyle(style);
1237            } else {
1238                tf = Typeface.create(tf, style);
1239            }
1240
1241            setTypeface(tf);
1242            // now compute what (if any) algorithmic styling is needed
1243            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1244            int need = style & ~typefaceStyle;
1245            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1246            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1247        } else {
1248            mTextPaint.setFakeBoldText(false);
1249            mTextPaint.setTextSkewX(0);
1250            setTypeface(tf);
1251        }
1252    }
1253
1254    /**
1255     * Subclasses override this to specify that they have a KeyListener
1256     * by default even if not specifically called for in the XML options.
1257     */
1258    protected boolean getDefaultEditable() {
1259        return false;
1260    }
1261
1262    /**
1263     * Subclasses override this to specify a default movement method.
1264     */
1265    protected MovementMethod getDefaultMovementMethod() {
1266        return null;
1267    }
1268
1269    /**
1270     * Return the text the TextView is displaying. If setText() was called with
1271     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1272     * the return value from this method to Spannable or Editable, respectively.
1273     *
1274     * Note: The content of the return value should not be modified. If you want
1275     * a modifiable one, you should make your own copy first.
1276     */
1277    @ViewDebug.CapturedViewProperty
1278    public CharSequence getText() {
1279        return mText;
1280    }
1281
1282    /**
1283     * Returns the length, in characters, of the text managed by this TextView
1284     */
1285    public int length() {
1286        return mText.length();
1287    }
1288
1289    /**
1290     * Return the text the TextView is displaying as an Editable object.  If
1291     * the text is not editable, null is returned.
1292     *
1293     * @see #getText
1294     */
1295    public Editable getEditableText() {
1296        return (mText instanceof Editable) ? (Editable)mText : null;
1297    }
1298
1299    /**
1300     * @return the height of one standard line in pixels.  Note that markup
1301     * within the text can cause individual lines to be taller or shorter
1302     * than this height, and the layout may contain additional first-
1303     * or last-line padding.
1304     */
1305    public int getLineHeight() {
1306        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1307    }
1308
1309    /**
1310     * @return the Layout that is currently being used to display the text.
1311     * This can be null if the text or width has recently changes.
1312     */
1313    public final Layout getLayout() {
1314        return mLayout;
1315    }
1316
1317    /**
1318     * @return the current key listener for this TextView.
1319     * This will frequently be null for non-EditText TextViews.
1320     */
1321    public final KeyListener getKeyListener() {
1322        return mEditor == null ? null : getEditor().mKeyListener;
1323    }
1324
1325    /**
1326     * Sets the key listener to be used with this TextView.  This can be null
1327     * to disallow user input.  Note that this method has significant and
1328     * subtle interactions with soft keyboards and other input method:
1329     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1330     * for important details.  Calling this method will replace the current
1331     * content type of the text view with the content type returned by the
1332     * key listener.
1333     * <p>
1334     * Be warned that if you want a TextView with a key listener or movement
1335     * method not to be focusable, or if you want a TextView without a
1336     * key listener or movement method to be focusable, you must call
1337     * {@link #setFocusable} again after calling this to get the focusability
1338     * back the way you want it.
1339     *
1340     * @attr ref android.R.styleable#TextView_numeric
1341     * @attr ref android.R.styleable#TextView_digits
1342     * @attr ref android.R.styleable#TextView_phoneNumber
1343     * @attr ref android.R.styleable#TextView_inputMethod
1344     * @attr ref android.R.styleable#TextView_capitalize
1345     * @attr ref android.R.styleable#TextView_autoText
1346     */
1347    public void setKeyListener(KeyListener input) {
1348        setKeyListenerOnly(input);
1349        fixFocusableAndClickableSettings();
1350
1351        if (input != null) {
1352            createEditorIfNeeded("input is not null");
1353            try {
1354                getEditor().mInputType = getEditor().mKeyListener.getInputType();
1355            } catch (IncompatibleClassChangeError e) {
1356                getEditor().mInputType = EditorInfo.TYPE_CLASS_TEXT;
1357            }
1358            // Change inputType, without affecting transformation.
1359            // No need to applySingleLine since mSingleLine is unchanged.
1360            setInputTypeSingleLine(mSingleLine);
1361        } else {
1362            if (mEditor != null) getEditor().mInputType = EditorInfo.TYPE_NULL;
1363        }
1364
1365        InputMethodManager imm = InputMethodManager.peekInstance();
1366        if (imm != null) imm.restartInput(this);
1367    }
1368
1369    private void setKeyListenerOnly(KeyListener input) {
1370        if (mEditor == null && input == null) return; // null is the default value
1371
1372        createEditorIfNeeded("setKeyListenerOnly");
1373        if (getEditor().mKeyListener != input) {
1374            getEditor().mKeyListener = input;
1375            if (input != null && !(mText instanceof Editable)) {
1376                setText(mText);
1377            }
1378
1379            setFilters((Editable) mText, mFilters);
1380        }
1381    }
1382
1383    /**
1384     * @return the movement method being used for this TextView.
1385     * This will frequently be null for non-EditText TextViews.
1386     */
1387    public final MovementMethod getMovementMethod() {
1388        return mMovement;
1389    }
1390
1391    /**
1392     * Sets the movement method (arrow key handler) to be used for
1393     * this TextView.  This can be null to disallow using the arrow keys
1394     * to move the cursor or scroll the view.
1395     * <p>
1396     * Be warned that if you want a TextView with a key listener or movement
1397     * method not to be focusable, or if you want a TextView without a
1398     * key listener or movement method to be focusable, you must call
1399     * {@link #setFocusable} again after calling this to get the focusability
1400     * back the way you want it.
1401     */
1402    public final void setMovementMethod(MovementMethod movement) {
1403        if (mMovement != movement) {
1404            mMovement = movement;
1405
1406            if (movement != null && !(mText instanceof Spannable)) {
1407                setText(mText);
1408            }
1409
1410            fixFocusableAndClickableSettings();
1411
1412            // SelectionModifierCursorController depends on textCanBeSelected, which depends on mMovement
1413            prepareCursorControllers();
1414        }
1415    }
1416
1417    private void fixFocusableAndClickableSettings() {
1418        if (mMovement != null || (mEditor != null && getEditor().mKeyListener != null)) {
1419            setFocusable(true);
1420            setClickable(true);
1421            setLongClickable(true);
1422        } else {
1423            setFocusable(false);
1424            setClickable(false);
1425            setLongClickable(false);
1426        }
1427    }
1428
1429    /**
1430     * @return the current transformation method for this TextView.
1431     * This will frequently be null except for single-line and password
1432     * fields.
1433     */
1434    public final TransformationMethod getTransformationMethod() {
1435        return mTransformation;
1436    }
1437
1438    /**
1439     * Sets the transformation that is applied to the text that this
1440     * TextView is displaying.
1441     *
1442     * @attr ref android.R.styleable#TextView_password
1443     * @attr ref android.R.styleable#TextView_singleLine
1444     */
1445    public final void setTransformationMethod(TransformationMethod method) {
1446        if (method == mTransformation) {
1447            // Avoid the setText() below if the transformation is
1448            // the same.
1449            return;
1450        }
1451        if (mTransformation != null) {
1452            if (mText instanceof Spannable) {
1453                ((Spannable) mText).removeSpan(mTransformation);
1454            }
1455        }
1456
1457        mTransformation = method;
1458
1459        if (method instanceof TransformationMethod2) {
1460            TransformationMethod2 method2 = (TransformationMethod2) method;
1461            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1462            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1463        } else {
1464            mAllowTransformationLengthChange = false;
1465        }
1466
1467        setText(mText);
1468    }
1469
1470    /**
1471     * Returns the top padding of the view, plus space for the top
1472     * Drawable if any.
1473     */
1474    public int getCompoundPaddingTop() {
1475        final Drawables dr = mDrawables;
1476        if (dr == null || dr.mDrawableTop == null) {
1477            return mPaddingTop;
1478        } else {
1479            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1480        }
1481    }
1482
1483    /**
1484     * Returns the bottom padding of the view, plus space for the bottom
1485     * Drawable if any.
1486     */
1487    public int getCompoundPaddingBottom() {
1488        final Drawables dr = mDrawables;
1489        if (dr == null || dr.mDrawableBottom == null) {
1490            return mPaddingBottom;
1491        } else {
1492            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1493        }
1494    }
1495
1496    /**
1497     * Returns the left padding of the view, plus space for the left
1498     * Drawable if any.
1499     */
1500    public int getCompoundPaddingLeft() {
1501        final Drawables dr = mDrawables;
1502        if (dr == null || dr.mDrawableLeft == null) {
1503            return mPaddingLeft;
1504        } else {
1505            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1506        }
1507    }
1508
1509    /**
1510     * Returns the right padding of the view, plus space for the right
1511     * Drawable if any.
1512     */
1513    public int getCompoundPaddingRight() {
1514        final Drawables dr = mDrawables;
1515        if (dr == null || dr.mDrawableRight == null) {
1516            return mPaddingRight;
1517        } else {
1518            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1519        }
1520    }
1521
1522    /**
1523     * Returns the start padding of the view, plus space for the start
1524     * Drawable if any.
1525     */
1526    public int getCompoundPaddingStart() {
1527        resolveDrawables();
1528        switch(getResolvedLayoutDirection()) {
1529            default:
1530            case LAYOUT_DIRECTION_LTR:
1531                return getCompoundPaddingLeft();
1532            case LAYOUT_DIRECTION_RTL:
1533                return getCompoundPaddingRight();
1534        }
1535    }
1536
1537    /**
1538     * Returns the end padding of the view, plus space for the end
1539     * Drawable if any.
1540     */
1541    public int getCompoundPaddingEnd() {
1542        resolveDrawables();
1543        switch(getResolvedLayoutDirection()) {
1544            default:
1545            case LAYOUT_DIRECTION_LTR:
1546                return getCompoundPaddingRight();
1547            case LAYOUT_DIRECTION_RTL:
1548                return getCompoundPaddingLeft();
1549        }
1550    }
1551
1552    /**
1553     * Returns the extended top padding of the view, including both the
1554     * top Drawable if any and any extra space to keep more than maxLines
1555     * of text from showing.  It is only valid to call this after measuring.
1556     */
1557    public int getExtendedPaddingTop() {
1558        if (mMaxMode != LINES) {
1559            return getCompoundPaddingTop();
1560        }
1561
1562        if (mLayout.getLineCount() <= mMaximum) {
1563            return getCompoundPaddingTop();
1564        }
1565
1566        int top = getCompoundPaddingTop();
1567        int bottom = getCompoundPaddingBottom();
1568        int viewht = getHeight() - top - bottom;
1569        int layoutht = mLayout.getLineTop(mMaximum);
1570
1571        if (layoutht >= viewht) {
1572            return top;
1573        }
1574
1575        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1576        if (gravity == Gravity.TOP) {
1577            return top;
1578        } else if (gravity == Gravity.BOTTOM) {
1579            return top + viewht - layoutht;
1580        } else { // (gravity == Gravity.CENTER_VERTICAL)
1581            return top + (viewht - layoutht) / 2;
1582        }
1583    }
1584
1585    /**
1586     * Returns the extended bottom padding of the view, including both the
1587     * bottom Drawable if any and any extra space to keep more than maxLines
1588     * of text from showing.  It is only valid to call this after measuring.
1589     */
1590    public int getExtendedPaddingBottom() {
1591        if (mMaxMode != LINES) {
1592            return getCompoundPaddingBottom();
1593        }
1594
1595        if (mLayout.getLineCount() <= mMaximum) {
1596            return getCompoundPaddingBottom();
1597        }
1598
1599        int top = getCompoundPaddingTop();
1600        int bottom = getCompoundPaddingBottom();
1601        int viewht = getHeight() - top - bottom;
1602        int layoutht = mLayout.getLineTop(mMaximum);
1603
1604        if (layoutht >= viewht) {
1605            return bottom;
1606        }
1607
1608        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1609        if (gravity == Gravity.TOP) {
1610            return bottom + viewht - layoutht;
1611        } else if (gravity == Gravity.BOTTOM) {
1612            return bottom;
1613        } else { // (gravity == Gravity.CENTER_VERTICAL)
1614            return bottom + (viewht - layoutht) / 2;
1615        }
1616    }
1617
1618    /**
1619     * Returns the total left padding of the view, including the left
1620     * Drawable if any.
1621     */
1622    public int getTotalPaddingLeft() {
1623        return getCompoundPaddingLeft();
1624    }
1625
1626    /**
1627     * Returns the total right padding of the view, including the right
1628     * Drawable if any.
1629     */
1630    public int getTotalPaddingRight() {
1631        return getCompoundPaddingRight();
1632    }
1633
1634    /**
1635     * Returns the total start padding of the view, including the start
1636     * Drawable if any.
1637     */
1638    public int getTotalPaddingStart() {
1639        return getCompoundPaddingStart();
1640    }
1641
1642    /**
1643     * Returns the total end padding of the view, including the end
1644     * Drawable if any.
1645     */
1646    public int getTotalPaddingEnd() {
1647        return getCompoundPaddingEnd();
1648    }
1649
1650    /**
1651     * Returns the total top padding of the view, including the top
1652     * Drawable if any, the extra space to keep more than maxLines
1653     * from showing, and the vertical offset for gravity, if any.
1654     */
1655    public int getTotalPaddingTop() {
1656        return getExtendedPaddingTop() + getVerticalOffset(true);
1657    }
1658
1659    /**
1660     * Returns the total bottom padding of the view, including the bottom
1661     * Drawable if any, the extra space to keep more than maxLines
1662     * from showing, and the vertical offset for gravity, if any.
1663     */
1664    public int getTotalPaddingBottom() {
1665        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1666    }
1667
1668    /**
1669     * Sets the Drawables (if any) to appear to the left of, above,
1670     * to the right of, and below the text.  Use null if you do not
1671     * want a Drawable there.  The Drawables must already have had
1672     * {@link Drawable#setBounds} called.
1673     *
1674     * @attr ref android.R.styleable#TextView_drawableLeft
1675     * @attr ref android.R.styleable#TextView_drawableTop
1676     * @attr ref android.R.styleable#TextView_drawableRight
1677     * @attr ref android.R.styleable#TextView_drawableBottom
1678     */
1679    public void setCompoundDrawables(Drawable left, Drawable top,
1680                                     Drawable right, Drawable bottom) {
1681        Drawables dr = mDrawables;
1682
1683        final boolean drawables = left != null || top != null
1684                || right != null || bottom != null;
1685
1686        if (!drawables) {
1687            // Clearing drawables...  can we free the data structure?
1688            if (dr != null) {
1689                if (dr.mDrawablePadding == 0) {
1690                    mDrawables = null;
1691                } else {
1692                    // We need to retain the last set padding, so just clear
1693                    // out all of the fields in the existing structure.
1694                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
1695                    dr.mDrawableLeft = null;
1696                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1697                    dr.mDrawableTop = null;
1698                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
1699                    dr.mDrawableRight = null;
1700                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1701                    dr.mDrawableBottom = null;
1702                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1703                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1704                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1705                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1706                }
1707            }
1708        } else {
1709            if (dr == null) {
1710                mDrawables = dr = new Drawables();
1711            }
1712
1713            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
1714                dr.mDrawableLeft.setCallback(null);
1715            }
1716            dr.mDrawableLeft = left;
1717
1718            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1719                dr.mDrawableTop.setCallback(null);
1720            }
1721            dr.mDrawableTop = top;
1722
1723            if (dr.mDrawableRight != right && dr.mDrawableRight != null) {
1724                dr.mDrawableRight.setCallback(null);
1725            }
1726            dr.mDrawableRight = right;
1727
1728            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1729                dr.mDrawableBottom.setCallback(null);
1730            }
1731            dr.mDrawableBottom = bottom;
1732
1733            final Rect compoundRect = dr.mCompoundRect;
1734            int[] state;
1735
1736            state = getDrawableState();
1737
1738            if (left != null) {
1739                left.setState(state);
1740                left.copyBounds(compoundRect);
1741                left.setCallback(this);
1742                dr.mDrawableSizeLeft = compoundRect.width();
1743                dr.mDrawableHeightLeft = compoundRect.height();
1744            } else {
1745                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1746            }
1747
1748            if (right != null) {
1749                right.setState(state);
1750                right.copyBounds(compoundRect);
1751                right.setCallback(this);
1752                dr.mDrawableSizeRight = compoundRect.width();
1753                dr.mDrawableHeightRight = compoundRect.height();
1754            } else {
1755                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1756            }
1757
1758            if (top != null) {
1759                top.setState(state);
1760                top.copyBounds(compoundRect);
1761                top.setCallback(this);
1762                dr.mDrawableSizeTop = compoundRect.height();
1763                dr.mDrawableWidthTop = compoundRect.width();
1764            } else {
1765                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1766            }
1767
1768            if (bottom != null) {
1769                bottom.setState(state);
1770                bottom.copyBounds(compoundRect);
1771                bottom.setCallback(this);
1772                dr.mDrawableSizeBottom = compoundRect.height();
1773                dr.mDrawableWidthBottom = compoundRect.width();
1774            } else {
1775                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1776            }
1777        }
1778
1779        invalidate();
1780        requestLayout();
1781    }
1782
1783    /**
1784     * Sets the Drawables (if any) to appear to the left of, above,
1785     * to the right of, and below the text.  Use 0 if you do not
1786     * want a Drawable there. The Drawables' bounds will be set to
1787     * their intrinsic bounds.
1788     *
1789     * @param left Resource identifier of the left Drawable.
1790     * @param top Resource identifier of the top Drawable.
1791     * @param right Resource identifier of the right Drawable.
1792     * @param bottom Resource identifier of the bottom Drawable.
1793     *
1794     * @attr ref android.R.styleable#TextView_drawableLeft
1795     * @attr ref android.R.styleable#TextView_drawableTop
1796     * @attr ref android.R.styleable#TextView_drawableRight
1797     * @attr ref android.R.styleable#TextView_drawableBottom
1798     */
1799    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1800        final Resources resources = getContext().getResources();
1801        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null,
1802                top != 0 ? resources.getDrawable(top) : null,
1803                right != 0 ? resources.getDrawable(right) : null,
1804                bottom != 0 ? resources.getDrawable(bottom) : null);
1805    }
1806
1807    /**
1808     * Sets the Drawables (if any) to appear to the left of, above,
1809     * to the right of, and below the text.  Use null if you do not
1810     * want a Drawable there. The Drawables' bounds will be set to
1811     * their intrinsic bounds.
1812     *
1813     * @attr ref android.R.styleable#TextView_drawableLeft
1814     * @attr ref android.R.styleable#TextView_drawableTop
1815     * @attr ref android.R.styleable#TextView_drawableRight
1816     * @attr ref android.R.styleable#TextView_drawableBottom
1817     */
1818    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1819            Drawable right, Drawable bottom) {
1820
1821        if (left != null) {
1822            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1823        }
1824        if (right != null) {
1825            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1826        }
1827        if (top != null) {
1828            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1829        }
1830        if (bottom != null) {
1831            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
1832        }
1833        setCompoundDrawables(left, top, right, bottom);
1834    }
1835
1836    /**
1837     * Sets the Drawables (if any) to appear to the start of, above,
1838     * to the end of, and below the text.  Use null if you do not
1839     * want a Drawable there.  The Drawables must already have had
1840     * {@link Drawable#setBounds} called.
1841     *
1842     * @attr ref android.R.styleable#TextView_drawableStart
1843     * @attr ref android.R.styleable#TextView_drawableTop
1844     * @attr ref android.R.styleable#TextView_drawableEnd
1845     * @attr ref android.R.styleable#TextView_drawableBottom
1846     */
1847    public void setCompoundDrawablesRelative(Drawable start, Drawable top,
1848                                     Drawable end, Drawable bottom) {
1849        Drawables dr = mDrawables;
1850
1851        final boolean drawables = start != null || top != null
1852                || end != null || bottom != null;
1853
1854        if (!drawables) {
1855            // Clearing drawables...  can we free the data structure?
1856            if (dr != null) {
1857                if (dr.mDrawablePadding == 0) {
1858                    mDrawables = null;
1859                } else {
1860                    // We need to retain the last set padding, so just clear
1861                    // out all of the fields in the existing structure.
1862                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
1863                    dr.mDrawableStart = null;
1864                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1865                    dr.mDrawableTop = null;
1866                    if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
1867                    dr.mDrawableEnd = null;
1868                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1869                    dr.mDrawableBottom = null;
1870                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1871                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1872                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1873                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1874                }
1875            }
1876        } else {
1877            if (dr == null) {
1878                mDrawables = dr = new Drawables();
1879            }
1880
1881            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
1882                dr.mDrawableStart.setCallback(null);
1883            }
1884            dr.mDrawableStart = start;
1885
1886            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1887                dr.mDrawableTop.setCallback(null);
1888            }
1889            dr.mDrawableTop = top;
1890
1891            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
1892                dr.mDrawableEnd.setCallback(null);
1893            }
1894            dr.mDrawableEnd = end;
1895
1896            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1897                dr.mDrawableBottom.setCallback(null);
1898            }
1899            dr.mDrawableBottom = bottom;
1900
1901            final Rect compoundRect = dr.mCompoundRect;
1902            int[] state;
1903
1904            state = getDrawableState();
1905
1906            if (start != null) {
1907                start.setState(state);
1908                start.copyBounds(compoundRect);
1909                start.setCallback(this);
1910                dr.mDrawableSizeStart = compoundRect.width();
1911                dr.mDrawableHeightStart = compoundRect.height();
1912            } else {
1913                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1914            }
1915
1916            if (end != null) {
1917                end.setState(state);
1918                end.copyBounds(compoundRect);
1919                end.setCallback(this);
1920                dr.mDrawableSizeEnd = compoundRect.width();
1921                dr.mDrawableHeightEnd = compoundRect.height();
1922            } else {
1923                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1924            }
1925
1926            if (top != null) {
1927                top.setState(state);
1928                top.copyBounds(compoundRect);
1929                top.setCallback(this);
1930                dr.mDrawableSizeTop = compoundRect.height();
1931                dr.mDrawableWidthTop = compoundRect.width();
1932            } else {
1933                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1934            }
1935
1936            if (bottom != null) {
1937                bottom.setState(state);
1938                bottom.copyBounds(compoundRect);
1939                bottom.setCallback(this);
1940                dr.mDrawableSizeBottom = compoundRect.height();
1941                dr.mDrawableWidthBottom = compoundRect.width();
1942            } else {
1943                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1944            }
1945        }
1946
1947        resolveDrawables();
1948        invalidate();
1949        requestLayout();
1950    }
1951
1952    /**
1953     * Sets the Drawables (if any) to appear to the start of, above,
1954     * to the end of, and below the text.  Use 0 if you do not
1955     * want a Drawable there. The Drawables' bounds will be set to
1956     * their intrinsic bounds.
1957     *
1958     * @param start Resource identifier of the start Drawable.
1959     * @param top Resource identifier of the top Drawable.
1960     * @param end Resource identifier of the end Drawable.
1961     * @param bottom Resource identifier of the bottom Drawable.
1962     *
1963     * @attr ref android.R.styleable#TextView_drawableStart
1964     * @attr ref android.R.styleable#TextView_drawableTop
1965     * @attr ref android.R.styleable#TextView_drawableEnd
1966     * @attr ref android.R.styleable#TextView_drawableBottom
1967     */
1968    public void setCompoundDrawablesRelativeWithIntrinsicBounds(int start, int top, int end,
1969            int bottom) {
1970        resetResolvedDrawables();
1971        final Resources resources = getContext().getResources();
1972        setCompoundDrawablesRelativeWithIntrinsicBounds(
1973                start != 0 ? resources.getDrawable(start) : null,
1974                top != 0 ? resources.getDrawable(top) : null,
1975                end != 0 ? resources.getDrawable(end) : null,
1976                bottom != 0 ? resources.getDrawable(bottom) : null);
1977    }
1978
1979    /**
1980     * Sets the Drawables (if any) to appear to the start of, above,
1981     * to the end of, and below the text.  Use null if you do not
1982     * want a Drawable there. The Drawables' bounds will be set to
1983     * their intrinsic bounds.
1984     *
1985     * @attr ref android.R.styleable#TextView_drawableStart
1986     * @attr ref android.R.styleable#TextView_drawableTop
1987     * @attr ref android.R.styleable#TextView_drawableEnd
1988     * @attr ref android.R.styleable#TextView_drawableBottom
1989     */
1990    public void setCompoundDrawablesRelativeWithIntrinsicBounds(Drawable start, Drawable top,
1991            Drawable end, Drawable bottom) {
1992
1993        resetResolvedDrawables();
1994        if (start != null) {
1995            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1996        }
1997        if (end != null) {
1998            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1999        }
2000        if (top != null) {
2001            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2002        }
2003        if (bottom != null) {
2004            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2005        }
2006        setCompoundDrawablesRelative(start, top, end, bottom);
2007    }
2008
2009    /**
2010     * Returns drawables for the left, top, right, and bottom borders.
2011     */
2012    public Drawable[] getCompoundDrawables() {
2013        final Drawables dr = mDrawables;
2014        if (dr != null) {
2015            return new Drawable[] {
2016                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
2017            };
2018        } else {
2019            return new Drawable[] { null, null, null, null };
2020        }
2021    }
2022
2023    /**
2024     * Returns drawables for the start, top, end, and bottom borders.
2025     */
2026    public Drawable[] getCompoundDrawablesRelative() {
2027        final Drawables dr = mDrawables;
2028        if (dr != null) {
2029            return new Drawable[] {
2030                dr.mDrawableStart, dr.mDrawableTop, dr.mDrawableEnd, dr.mDrawableBottom
2031            };
2032        } else {
2033            return new Drawable[] { null, null, null, null };
2034        }
2035    }
2036
2037    /**
2038     * Sets the size of the padding between the compound drawables and
2039     * the text.
2040     *
2041     * @attr ref android.R.styleable#TextView_drawablePadding
2042     */
2043    public void setCompoundDrawablePadding(int pad) {
2044        Drawables dr = mDrawables;
2045        if (pad == 0) {
2046            if (dr != null) {
2047                dr.mDrawablePadding = pad;
2048            }
2049        } else {
2050            if (dr == null) {
2051                mDrawables = dr = new Drawables();
2052            }
2053            dr.mDrawablePadding = pad;
2054        }
2055
2056        invalidate();
2057        requestLayout();
2058    }
2059
2060    /**
2061     * Returns the padding between the compound drawables and the text.
2062     */
2063    public int getCompoundDrawablePadding() {
2064        final Drawables dr = mDrawables;
2065        return dr != null ? dr.mDrawablePadding : 0;
2066    }
2067
2068    @Override
2069    public void setPadding(int left, int top, int right, int bottom) {
2070        if (left != mPaddingLeft ||
2071            right != mPaddingRight ||
2072            top != mPaddingTop ||
2073            bottom != mPaddingBottom) {
2074            nullLayouts();
2075        }
2076
2077        // the super call will requestLayout()
2078        super.setPadding(left, top, right, bottom);
2079        invalidate();
2080    }
2081
2082    @Override
2083    public void setPaddingRelative(int start, int top, int end, int bottom) {
2084        if (start != getPaddingStart() ||
2085            end != getPaddingEnd() ||
2086            top != mPaddingTop ||
2087            bottom != mPaddingBottom) {
2088            nullLayouts();
2089        }
2090
2091        // the super call will requestLayout()
2092        super.setPaddingRelative(start, top, end, bottom);
2093        invalidate();
2094    }
2095
2096    /**
2097     * Gets the autolink mask of the text.  See {@link
2098     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2099     * possible values.
2100     *
2101     * @attr ref android.R.styleable#TextView_autoLink
2102     */
2103    public final int getAutoLinkMask() {
2104        return mAutoLinkMask;
2105    }
2106
2107    /**
2108     * Sets the text color, size, style, hint color, and highlight color
2109     * from the specified TextAppearance resource.
2110     */
2111    public void setTextAppearance(Context context, int resid) {
2112        TypedArray appearance =
2113            context.obtainStyledAttributes(resid,
2114                                           com.android.internal.R.styleable.TextAppearance);
2115
2116        int color;
2117        ColorStateList colors;
2118        int ts;
2119
2120        color = appearance.getColor(com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
2121        if (color != 0) {
2122            setHighlightColor(color);
2123        }
2124
2125        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2126                                              TextAppearance_textColor);
2127        if (colors != null) {
2128            setTextColor(colors);
2129        }
2130
2131        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
2132                                              TextAppearance_textSize, 0);
2133        if (ts != 0) {
2134            setRawTextSize(ts);
2135        }
2136
2137        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2138                                              TextAppearance_textColorHint);
2139        if (colors != null) {
2140            setHintTextColor(colors);
2141        }
2142
2143        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2144                                              TextAppearance_textColorLink);
2145        if (colors != null) {
2146            setLinkTextColor(colors);
2147        }
2148
2149        int typefaceIndex, styleIndex;
2150
2151        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
2152                                          TextAppearance_typeface, -1);
2153        styleIndex = appearance.getInt(com.android.internal.R.styleable.
2154                                       TextAppearance_textStyle, -1);
2155
2156        setTypefaceByIndex(typefaceIndex, styleIndex);
2157
2158        if (appearance.getBoolean(com.android.internal.R.styleable.TextAppearance_textAllCaps,
2159                false)) {
2160            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2161        }
2162
2163        appearance.recycle();
2164    }
2165
2166    /**
2167     * @return the size (in pixels) of the default text size in this TextView.
2168     */
2169    public float getTextSize() {
2170        return mTextPaint.getTextSize();
2171    }
2172
2173    /**
2174     * Set the default text size to the given value, interpreted as "scaled
2175     * pixel" units.  This size is adjusted based on the current density and
2176     * user font size preference.
2177     *
2178     * @param size The scaled pixel size.
2179     *
2180     * @attr ref android.R.styleable#TextView_textSize
2181     */
2182    @android.view.RemotableViewMethod
2183    public void setTextSize(float size) {
2184        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2185    }
2186
2187    /**
2188     * Set the default text size to a given unit and value.  See {@link
2189     * TypedValue} for the possible dimension units.
2190     *
2191     * @param unit The desired dimension unit.
2192     * @param size The desired size in the given units.
2193     *
2194     * @attr ref android.R.styleable#TextView_textSize
2195     */
2196    public void setTextSize(int unit, float size) {
2197        Context c = getContext();
2198        Resources r;
2199
2200        if (c == null)
2201            r = Resources.getSystem();
2202        else
2203            r = c.getResources();
2204
2205        setRawTextSize(TypedValue.applyDimension(
2206            unit, size, r.getDisplayMetrics()));
2207    }
2208
2209    private void setRawTextSize(float size) {
2210        if (size != mTextPaint.getTextSize()) {
2211            mTextPaint.setTextSize(size);
2212
2213            if (mLayout != null) {
2214                nullLayouts();
2215                requestLayout();
2216                invalidate();
2217            }
2218        }
2219    }
2220
2221    /**
2222     * @return the extent by which text is currently being stretched
2223     * horizontally.  This will usually be 1.
2224     */
2225    public float getTextScaleX() {
2226        return mTextPaint.getTextScaleX();
2227    }
2228
2229    /**
2230     * Sets the extent by which text should be stretched horizontally.
2231     *
2232     * @attr ref android.R.styleable#TextView_textScaleX
2233     */
2234    @android.view.RemotableViewMethod
2235    public void setTextScaleX(float size) {
2236        if (size != mTextPaint.getTextScaleX()) {
2237            mUserSetTextScaleX = true;
2238            mTextPaint.setTextScaleX(size);
2239
2240            if (mLayout != null) {
2241                nullLayouts();
2242                requestLayout();
2243                invalidate();
2244            }
2245        }
2246    }
2247
2248    /**
2249     * Sets the typeface and style in which the text should be displayed.
2250     * Note that not all Typeface families actually have bold and italic
2251     * variants, so you may need to use
2252     * {@link #setTypeface(Typeface, int)} to get the appearance
2253     * that you actually want.
2254     *
2255     * @attr ref android.R.styleable#TextView_typeface
2256     * @attr ref android.R.styleable#TextView_textStyle
2257     */
2258    public void setTypeface(Typeface tf) {
2259        if (mTextPaint.getTypeface() != tf) {
2260            mTextPaint.setTypeface(tf);
2261
2262            if (mLayout != null) {
2263                nullLayouts();
2264                requestLayout();
2265                invalidate();
2266            }
2267        }
2268    }
2269
2270    /**
2271     * @return the current typeface and style in which the text is being
2272     * displayed.
2273     */
2274    public Typeface getTypeface() {
2275        return mTextPaint.getTypeface();
2276    }
2277
2278    /**
2279     * Sets the text color for all the states (normal, selected,
2280     * focused) to be this color.
2281     *
2282     * @attr ref android.R.styleable#TextView_textColor
2283     */
2284    @android.view.RemotableViewMethod
2285    public void setTextColor(int color) {
2286        mTextColor = ColorStateList.valueOf(color);
2287        updateTextColors();
2288    }
2289
2290    /**
2291     * Sets the text color.
2292     *
2293     * @attr ref android.R.styleable#TextView_textColor
2294     */
2295    public void setTextColor(ColorStateList colors) {
2296        if (colors == null) {
2297            throw new NullPointerException();
2298        }
2299
2300        mTextColor = colors;
2301        updateTextColors();
2302    }
2303
2304    /**
2305     * Return the set of text colors.
2306     *
2307     * @return Returns the set of text colors.
2308     */
2309    public final ColorStateList getTextColors() {
2310        return mTextColor;
2311    }
2312
2313    /**
2314     * <p>Return the current color selected for normal text.</p>
2315     *
2316     * @return Returns the current text color.
2317     */
2318    public final int getCurrentTextColor() {
2319        return mCurTextColor;
2320    }
2321
2322    /**
2323     * Sets the color used to display the selection highlight.
2324     *
2325     * @attr ref android.R.styleable#TextView_textColorHighlight
2326     */
2327    @android.view.RemotableViewMethod
2328    public void setHighlightColor(int color) {
2329        if (mHighlightColor != color) {
2330            mHighlightColor = color;
2331            if (mEditor != null) getEditor().invalidateTextDisplayList();
2332            invalidate();
2333        }
2334    }
2335
2336    /**
2337     * Gives the text a shadow of the specified radius and color, the specified
2338     * distance from its normal position.
2339     *
2340     * @attr ref android.R.styleable#TextView_shadowColor
2341     * @attr ref android.R.styleable#TextView_shadowDx
2342     * @attr ref android.R.styleable#TextView_shadowDy
2343     * @attr ref android.R.styleable#TextView_shadowRadius
2344     */
2345    public void setShadowLayer(float radius, float dx, float dy, int color) {
2346        mTextPaint.setShadowLayer(radius, dx, dy, color);
2347
2348        mShadowRadius = radius;
2349        mShadowDx = dx;
2350        mShadowDy = dy;
2351
2352        if (mEditor != null) getEditor().invalidateTextDisplayList();
2353        invalidate();
2354    }
2355
2356    /**
2357     * @return the base paint used for the text.  Please use this only to
2358     * consult the Paint's properties and not to change them.
2359     */
2360    public TextPaint getPaint() {
2361        return mTextPaint;
2362    }
2363
2364    /**
2365     * Sets the autolink mask of the text.  See {@link
2366     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2367     * possible values.
2368     *
2369     * @attr ref android.R.styleable#TextView_autoLink
2370     */
2371    @android.view.RemotableViewMethod
2372    public final void setAutoLinkMask(int mask) {
2373        mAutoLinkMask = mask;
2374    }
2375
2376    /**
2377     * Sets whether the movement method will automatically be set to
2378     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2379     * set to nonzero and links are detected in {@link #setText}.
2380     * The default is true.
2381     *
2382     * @attr ref android.R.styleable#TextView_linksClickable
2383     */
2384    @android.view.RemotableViewMethod
2385    public final void setLinksClickable(boolean whether) {
2386        mLinksClickable = whether;
2387    }
2388
2389    /**
2390     * Returns whether the movement method will automatically be set to
2391     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2392     * set to nonzero and links are detected in {@link #setText}.
2393     * The default is true.
2394     *
2395     * @attr ref android.R.styleable#TextView_linksClickable
2396     */
2397    public final boolean getLinksClickable() {
2398        return mLinksClickable;
2399    }
2400
2401    /**
2402     * Returns the list of URLSpans attached to the text
2403     * (by {@link Linkify} or otherwise) if any.  You can call
2404     * {@link URLSpan#getURL} on them to find where they link to
2405     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
2406     * to find the region of the text they are attached to.
2407     */
2408    public URLSpan[] getUrls() {
2409        if (mText instanceof Spanned) {
2410            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
2411        } else {
2412            return new URLSpan[0];
2413        }
2414    }
2415
2416    /**
2417     * Sets the color of the hint text.
2418     *
2419     * @attr ref android.R.styleable#TextView_textColorHint
2420     */
2421    @android.view.RemotableViewMethod
2422    public final void setHintTextColor(int color) {
2423        mHintTextColor = ColorStateList.valueOf(color);
2424        updateTextColors();
2425    }
2426
2427    /**
2428     * Sets the color of the hint text.
2429     *
2430     * @attr ref android.R.styleable#TextView_textColorHint
2431     */
2432    public final void setHintTextColor(ColorStateList colors) {
2433        mHintTextColor = colors;
2434        updateTextColors();
2435    }
2436
2437    /**
2438     * <p>Return the color used to paint the hint text.</p>
2439     *
2440     * @return Returns the list of hint text colors.
2441     */
2442    public final ColorStateList getHintTextColors() {
2443        return mHintTextColor;
2444    }
2445
2446    /**
2447     * <p>Return the current color selected to paint the hint text.</p>
2448     *
2449     * @return Returns the current hint text color.
2450     */
2451    public final int getCurrentHintTextColor() {
2452        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
2453    }
2454
2455    /**
2456     * Sets the color of links in the text.
2457     *
2458     * @attr ref android.R.styleable#TextView_textColorLink
2459     */
2460    @android.view.RemotableViewMethod
2461    public final void setLinkTextColor(int color) {
2462        mLinkTextColor = ColorStateList.valueOf(color);
2463        updateTextColors();
2464    }
2465
2466    /**
2467     * Sets the color of links in the text.
2468     *
2469     * @attr ref android.R.styleable#TextView_textColorLink
2470     */
2471    public final void setLinkTextColor(ColorStateList colors) {
2472        mLinkTextColor = colors;
2473        updateTextColors();
2474    }
2475
2476    /**
2477     * <p>Returns the color used to paint links in the text.</p>
2478     *
2479     * @return Returns the list of link text colors.
2480     */
2481    public final ColorStateList getLinkTextColors() {
2482        return mLinkTextColor;
2483    }
2484
2485    /**
2486     * Sets the horizontal alignment of the text and the
2487     * vertical gravity that will be used when there is extra space
2488     * in the TextView beyond what is required for the text itself.
2489     *
2490     * @see android.view.Gravity
2491     * @attr ref android.R.styleable#TextView_gravity
2492     */
2493    public void setGravity(int gravity) {
2494        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
2495            gravity |= Gravity.START;
2496        }
2497        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
2498            gravity |= Gravity.TOP;
2499        }
2500
2501        boolean newLayout = false;
2502
2503        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
2504            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
2505            newLayout = true;
2506        }
2507
2508        if (gravity != mGravity) {
2509            invalidate();
2510            mLayoutAlignment = null;
2511        }
2512
2513        mGravity = gravity;
2514
2515        if (mLayout != null && newLayout) {
2516            // XXX this is heavy-handed because no actual content changes.
2517            int want = mLayout.getWidth();
2518            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
2519
2520            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
2521                          mRight - mLeft - getCompoundPaddingLeft() -
2522                          getCompoundPaddingRight(), true);
2523        }
2524    }
2525
2526    /**
2527     * Returns the horizontal and vertical alignment of this TextView.
2528     *
2529     * @see android.view.Gravity
2530     * @attr ref android.R.styleable#TextView_gravity
2531     */
2532    public int getGravity() {
2533        return mGravity;
2534    }
2535
2536    /**
2537     * @return the flags on the Paint being used to display the text.
2538     * @see Paint#getFlags
2539     */
2540    public int getPaintFlags() {
2541        return mTextPaint.getFlags();
2542    }
2543
2544    /**
2545     * Sets flags on the Paint being used to display the text and
2546     * reflows the text if they are different from the old flags.
2547     * @see Paint#setFlags
2548     */
2549    @android.view.RemotableViewMethod
2550    public void setPaintFlags(int flags) {
2551        if (mTextPaint.getFlags() != flags) {
2552            mTextPaint.setFlags(flags);
2553
2554            if (mLayout != null) {
2555                nullLayouts();
2556                requestLayout();
2557                invalidate();
2558            }
2559        }
2560    }
2561
2562    /**
2563     * Sets whether the text should be allowed to be wider than the
2564     * View is.  If false, it will be wrapped to the width of the View.
2565     *
2566     * @attr ref android.R.styleable#TextView_scrollHorizontally
2567     */
2568    public void setHorizontallyScrolling(boolean whether) {
2569        if (mHorizontallyScrolling != whether) {
2570            mHorizontallyScrolling = whether;
2571
2572            if (mLayout != null) {
2573                nullLayouts();
2574                requestLayout();
2575                invalidate();
2576            }
2577        }
2578    }
2579
2580    /**
2581     * Returns whether the text is allowed to be wider than the View is.
2582     * If false, the text will be wrapped to the width of the View.
2583     *
2584     * @attr ref android.R.styleable#TextView_scrollHorizontally
2585     * @hide
2586     */
2587    public boolean getHorizontallyScrolling() {
2588        return mHorizontallyScrolling;
2589    }
2590
2591    /**
2592     * Makes the TextView at least this many lines tall.
2593     *
2594     * Setting this value overrides any other (minimum) height setting. A single line TextView will
2595     * set this value to 1.
2596     *
2597     * @attr ref android.R.styleable#TextView_minLines
2598     */
2599    @android.view.RemotableViewMethod
2600    public void setMinLines(int minlines) {
2601        mMinimum = minlines;
2602        mMinMode = LINES;
2603
2604        requestLayout();
2605        invalidate();
2606    }
2607
2608    /**
2609     * Makes the TextView at least this many pixels tall.
2610     *
2611     * Setting this value overrides any other (minimum) number of lines setting.
2612     *
2613     * @attr ref android.R.styleable#TextView_minHeight
2614     */
2615    @android.view.RemotableViewMethod
2616    public void setMinHeight(int minHeight) {
2617        mMinimum = minHeight;
2618        mMinMode = PIXELS;
2619
2620        requestLayout();
2621        invalidate();
2622    }
2623
2624    /**
2625     * Makes the TextView at most this many lines tall.
2626     *
2627     * Setting this value overrides any other (maximum) height setting.
2628     *
2629     * @attr ref android.R.styleable#TextView_maxLines
2630     */
2631    @android.view.RemotableViewMethod
2632    public void setMaxLines(int maxlines) {
2633        mMaximum = maxlines;
2634        mMaxMode = LINES;
2635
2636        requestLayout();
2637        invalidate();
2638    }
2639
2640    /**
2641     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
2642     * {@link #setMaxLines(int)} method.
2643     *
2644     * Setting this value overrides any other (maximum) number of lines setting.
2645     *
2646     * @attr ref android.R.styleable#TextView_maxHeight
2647     */
2648    @android.view.RemotableViewMethod
2649    public void setMaxHeight(int maxHeight) {
2650        mMaximum = maxHeight;
2651        mMaxMode = PIXELS;
2652
2653        requestLayout();
2654        invalidate();
2655    }
2656
2657    /**
2658     * Makes the TextView exactly this many lines tall.
2659     *
2660     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2661     * height setting. A single line TextView will set this value to 1.
2662     *
2663     * @attr ref android.R.styleable#TextView_lines
2664     */
2665    @android.view.RemotableViewMethod
2666    public void setLines(int lines) {
2667        mMaximum = mMinimum = lines;
2668        mMaxMode = mMinMode = LINES;
2669
2670        requestLayout();
2671        invalidate();
2672    }
2673
2674    /**
2675     * Makes the TextView exactly this many pixels tall.
2676     * You could do the same thing by specifying this number in the
2677     * LayoutParams.
2678     *
2679     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2680     * height setting.
2681     *
2682     * @attr ref android.R.styleable#TextView_height
2683     */
2684    @android.view.RemotableViewMethod
2685    public void setHeight(int pixels) {
2686        mMaximum = mMinimum = pixels;
2687        mMaxMode = mMinMode = PIXELS;
2688
2689        requestLayout();
2690        invalidate();
2691    }
2692
2693    /**
2694     * Makes the TextView at least this many ems wide
2695     *
2696     * @attr ref android.R.styleable#TextView_minEms
2697     */
2698    @android.view.RemotableViewMethod
2699    public void setMinEms(int minems) {
2700        mMinWidth = minems;
2701        mMinWidthMode = EMS;
2702
2703        requestLayout();
2704        invalidate();
2705    }
2706
2707    /**
2708     * Makes the TextView at least this many pixels wide
2709     *
2710     * @attr ref android.R.styleable#TextView_minWidth
2711     */
2712    @android.view.RemotableViewMethod
2713    public void setMinWidth(int minpixels) {
2714        mMinWidth = minpixels;
2715        mMinWidthMode = PIXELS;
2716
2717        requestLayout();
2718        invalidate();
2719    }
2720
2721    /**
2722     * Makes the TextView at most this many ems wide
2723     *
2724     * @attr ref android.R.styleable#TextView_maxEms
2725     */
2726    @android.view.RemotableViewMethod
2727    public void setMaxEms(int maxems) {
2728        mMaxWidth = maxems;
2729        mMaxWidthMode = EMS;
2730
2731        requestLayout();
2732        invalidate();
2733    }
2734
2735    /**
2736     * Makes the TextView at most this many pixels wide
2737     *
2738     * @attr ref android.R.styleable#TextView_maxWidth
2739     */
2740    @android.view.RemotableViewMethod
2741    public void setMaxWidth(int maxpixels) {
2742        mMaxWidth = maxpixels;
2743        mMaxWidthMode = PIXELS;
2744
2745        requestLayout();
2746        invalidate();
2747    }
2748
2749    /**
2750     * Makes the TextView exactly this many ems wide
2751     *
2752     * @attr ref android.R.styleable#TextView_ems
2753     */
2754    @android.view.RemotableViewMethod
2755    public void setEms(int ems) {
2756        mMaxWidth = mMinWidth = ems;
2757        mMaxWidthMode = mMinWidthMode = EMS;
2758
2759        requestLayout();
2760        invalidate();
2761    }
2762
2763    /**
2764     * Makes the TextView exactly this many pixels wide.
2765     * You could do the same thing by specifying this number in the
2766     * LayoutParams.
2767     *
2768     * @attr ref android.R.styleable#TextView_width
2769     */
2770    @android.view.RemotableViewMethod
2771    public void setWidth(int pixels) {
2772        mMaxWidth = mMinWidth = pixels;
2773        mMaxWidthMode = mMinWidthMode = PIXELS;
2774
2775        requestLayout();
2776        invalidate();
2777    }
2778
2779
2780    /**
2781     * Sets line spacing for this TextView.  Each line will have its height
2782     * multiplied by <code>mult</code> and have <code>add</code> added to it.
2783     *
2784     * @attr ref android.R.styleable#TextView_lineSpacingExtra
2785     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
2786     */
2787    public void setLineSpacing(float add, float mult) {
2788        if (mSpacingAdd != add || mSpacingMult != mult) {
2789            mSpacingAdd = add;
2790            mSpacingMult = mult;
2791
2792            if (mLayout != null) {
2793                nullLayouts();
2794                requestLayout();
2795                invalidate();
2796            }
2797        }
2798    }
2799
2800    /**
2801     * Convenience method: Append the specified text to the TextView's
2802     * display buffer, upgrading it to BufferType.EDITABLE if it was
2803     * not already editable.
2804     */
2805    public final void append(CharSequence text) {
2806        append(text, 0, text.length());
2807    }
2808
2809    /**
2810     * Convenience method: Append the specified text slice to the TextView's
2811     * display buffer, upgrading it to BufferType.EDITABLE if it was
2812     * not already editable.
2813     */
2814    public void append(CharSequence text, int start, int end) {
2815        if (!(mText instanceof Editable)) {
2816            setText(mText, BufferType.EDITABLE);
2817        }
2818
2819        ((Editable) mText).append(text, start, end);
2820    }
2821
2822    private void updateTextColors() {
2823        boolean inval = false;
2824        int color = mTextColor.getColorForState(getDrawableState(), 0);
2825        if (color != mCurTextColor) {
2826            mCurTextColor = color;
2827            inval = true;
2828        }
2829        if (mLinkTextColor != null) {
2830            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
2831            if (color != mTextPaint.linkColor) {
2832                mTextPaint.linkColor = color;
2833                inval = true;
2834            }
2835        }
2836        if (mHintTextColor != null) {
2837            color = mHintTextColor.getColorForState(getDrawableState(), 0);
2838            if (color != mCurHintTextColor && mText.length() == 0) {
2839                mCurHintTextColor = color;
2840                inval = true;
2841            }
2842        }
2843        if (inval) {
2844            if (mEditor != null) getEditor().invalidateTextDisplayList();
2845            invalidate();
2846        }
2847    }
2848
2849    @Override
2850    protected void drawableStateChanged() {
2851        super.drawableStateChanged();
2852        if (mTextColor != null && mTextColor.isStateful()
2853                || (mHintTextColor != null && mHintTextColor.isStateful())
2854                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
2855            updateTextColors();
2856        }
2857
2858        final Drawables dr = mDrawables;
2859        if (dr != null) {
2860            int[] state = getDrawableState();
2861            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
2862                dr.mDrawableTop.setState(state);
2863            }
2864            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
2865                dr.mDrawableBottom.setState(state);
2866            }
2867            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
2868                dr.mDrawableLeft.setState(state);
2869            }
2870            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
2871                dr.mDrawableRight.setState(state);
2872            }
2873            if (dr.mDrawableStart != null && dr.mDrawableStart.isStateful()) {
2874                dr.mDrawableStart.setState(state);
2875            }
2876            if (dr.mDrawableEnd != null && dr.mDrawableEnd.isStateful()) {
2877                dr.mDrawableEnd.setState(state);
2878            }
2879        }
2880    }
2881
2882    @Override
2883    public Parcelable onSaveInstanceState() {
2884        Parcelable superState = super.onSaveInstanceState();
2885
2886        // Save state if we are forced to
2887        boolean save = mFreezesText;
2888        int start = 0;
2889        int end = 0;
2890
2891        if (mText != null) {
2892            start = getSelectionStart();
2893            end = getSelectionEnd();
2894            if (start >= 0 || end >= 0) {
2895                // Or save state if there is a selection
2896                save = true;
2897            }
2898        }
2899
2900        if (save) {
2901            SavedState ss = new SavedState(superState);
2902            // XXX Should also save the current scroll position!
2903            ss.selStart = start;
2904            ss.selEnd = end;
2905
2906            if (mText instanceof Spanned) {
2907                /*
2908                 * Calling setText() strips off any ChangeWatchers;
2909                 * strip them now to avoid leaking references.
2910                 * But do it to a copy so that if there are any
2911                 * further changes to the text of this view, it
2912                 * won't get into an inconsistent state.
2913                 */
2914
2915                Spannable sp = new SpannableString(mText);
2916
2917                for (ChangeWatcher cw : sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
2918                    sp.removeSpan(cw);
2919                }
2920
2921                if (mEditor != null) {
2922                    removeMisspelledSpans(sp);
2923                    sp.removeSpan(getEditor().mSuggestionRangeSpan);
2924                }
2925
2926                ss.text = sp;
2927            } else {
2928                ss.text = mText.toString();
2929            }
2930
2931            if (isFocused() && start >= 0 && end >= 0) {
2932                ss.frozenWithFocus = true;
2933            }
2934
2935            ss.error = getError();
2936
2937            return ss;
2938        }
2939
2940        return superState;
2941    }
2942
2943    void removeMisspelledSpans(Spannable spannable) {
2944        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
2945                SuggestionSpan.class);
2946        for (int i = 0; i < suggestionSpans.length; i++) {
2947            int flags = suggestionSpans[i].getFlags();
2948            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
2949                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
2950                spannable.removeSpan(suggestionSpans[i]);
2951            }
2952        }
2953    }
2954
2955    @Override
2956    public void onRestoreInstanceState(Parcelable state) {
2957        if (!(state instanceof SavedState)) {
2958            super.onRestoreInstanceState(state);
2959            return;
2960        }
2961
2962        SavedState ss = (SavedState)state;
2963        super.onRestoreInstanceState(ss.getSuperState());
2964
2965        // XXX restore buffer type too, as well as lots of other stuff
2966        if (ss.text != null) {
2967            setText(ss.text);
2968        }
2969
2970        if (ss.selStart >= 0 && ss.selEnd >= 0) {
2971            if (mText instanceof Spannable) {
2972                int len = mText.length();
2973
2974                if (ss.selStart > len || ss.selEnd > len) {
2975                    String restored = "";
2976
2977                    if (ss.text != null) {
2978                        restored = "(restored) ";
2979                    }
2980
2981                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
2982                          "/" + ss.selEnd + " out of range for " + restored +
2983                          "text " + mText);
2984                } else {
2985                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
2986
2987                    if (ss.frozenWithFocus) {
2988                        createEditorIfNeeded("restore instance with focus");
2989                        getEditor().mFrozenWithFocus = true;
2990                    }
2991                }
2992            }
2993        }
2994
2995        if (ss.error != null) {
2996            final CharSequence error = ss.error;
2997            // Display the error later, after the first layout pass
2998            post(new Runnable() {
2999                public void run() {
3000                    setError(error);
3001                }
3002            });
3003        }
3004    }
3005
3006    /**
3007     * Control whether this text view saves its entire text contents when
3008     * freezing to an icicle, in addition to dynamic state such as cursor
3009     * position.  By default this is false, not saving the text.  Set to true
3010     * if the text in the text view is not being saved somewhere else in
3011     * persistent storage (such as in a content provider) so that if the
3012     * view is later thawed the user will not lose their data.
3013     *
3014     * @param freezesText Controls whether a frozen icicle should include the
3015     * entire text data: true to include it, false to not.
3016     *
3017     * @attr ref android.R.styleable#TextView_freezesText
3018     */
3019    @android.view.RemotableViewMethod
3020    public void setFreezesText(boolean freezesText) {
3021        mFreezesText = freezesText;
3022    }
3023
3024    /**
3025     * Return whether this text view is including its entire text contents
3026     * in frozen icicles.
3027     *
3028     * @return Returns true if text is included, false if it isn't.
3029     *
3030     * @see #setFreezesText
3031     */
3032    public boolean getFreezesText() {
3033        return mFreezesText;
3034    }
3035
3036    ///////////////////////////////////////////////////////////////////////////
3037
3038    /**
3039     * Sets the Factory used to create new Editables.
3040     */
3041    public final void setEditableFactory(Editable.Factory factory) {
3042        mEditableFactory = factory;
3043        setText(mText);
3044    }
3045
3046    /**
3047     * Sets the Factory used to create new Spannables.
3048     */
3049    public final void setSpannableFactory(Spannable.Factory factory) {
3050        mSpannableFactory = factory;
3051        setText(mText);
3052    }
3053
3054    /**
3055     * Sets the string value of the TextView. TextView <em>does not</em> accept
3056     * HTML-like formatting, which you can do with text strings in XML resource files.
3057     * To style your strings, attach android.text.style.* objects to a
3058     * {@link android.text.SpannableString SpannableString}, or see the
3059     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
3060     * Available Resource Types</a> documentation for an example of setting
3061     * formatted text in the XML resource file.
3062     *
3063     * @attr ref android.R.styleable#TextView_text
3064     */
3065    @android.view.RemotableViewMethod
3066    public final void setText(CharSequence text) {
3067        setText(text, mBufferType);
3068    }
3069
3070    /**
3071     * Like {@link #setText(CharSequence)},
3072     * except that the cursor position (if any) is retained in the new text.
3073     *
3074     * @param text The new text to place in the text view.
3075     *
3076     * @see #setText(CharSequence)
3077     */
3078    @android.view.RemotableViewMethod
3079    public final void setTextKeepState(CharSequence text) {
3080        setTextKeepState(text, mBufferType);
3081    }
3082
3083    /**
3084     * Sets the text that this TextView is to display (see
3085     * {@link #setText(CharSequence)}) and also sets whether it is stored
3086     * in a styleable/spannable buffer and whether it is editable.
3087     *
3088     * @attr ref android.R.styleable#TextView_text
3089     * @attr ref android.R.styleable#TextView_bufferType
3090     */
3091    public void setText(CharSequence text, BufferType type) {
3092        setText(text, type, true, 0);
3093
3094        if (mCharWrapper != null) {
3095            mCharWrapper.mChars = null;
3096        }
3097    }
3098
3099    private void setText(CharSequence text, BufferType type,
3100                         boolean notifyBefore, int oldlen) {
3101        if (text == null) {
3102            text = "";
3103        }
3104
3105        // If suggestions are not enabled, remove the suggestion spans from the text
3106        if (!isSuggestionsEnabled()) {
3107            text = removeSuggestionSpans(text);
3108        }
3109
3110        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
3111
3112        if (text instanceof Spanned &&
3113            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
3114            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
3115                setHorizontalFadingEdgeEnabled(true);
3116                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
3117            } else {
3118                setHorizontalFadingEdgeEnabled(false);
3119                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
3120            }
3121            setEllipsize(TextUtils.TruncateAt.MARQUEE);
3122        }
3123
3124        int n = mFilters.length;
3125        for (int i = 0; i < n; i++) {
3126            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
3127            if (out != null) {
3128                text = out;
3129            }
3130        }
3131
3132        if (notifyBefore) {
3133            if (mText != null) {
3134                oldlen = mText.length();
3135                sendBeforeTextChanged(mText, 0, oldlen, text.length());
3136            } else {
3137                sendBeforeTextChanged("", 0, 0, text.length());
3138            }
3139        }
3140
3141        boolean needEditableForNotification = false;
3142
3143        if (mListeners != null && mListeners.size() != 0) {
3144            needEditableForNotification = true;
3145        }
3146
3147        if (type == BufferType.EDITABLE || getKeyListener() != null || needEditableForNotification) {
3148            createEditorIfNeeded("setText with BufferType.EDITABLE or non null mInput");
3149            Editable t = mEditableFactory.newEditable(text);
3150            text = t;
3151            setFilters(t, mFilters);
3152            InputMethodManager imm = InputMethodManager.peekInstance();
3153            if (imm != null) imm.restartInput(this);
3154        } else if (type == BufferType.SPANNABLE || mMovement != null) {
3155            text = mSpannableFactory.newSpannable(text);
3156        } else if (!(text instanceof CharWrapper)) {
3157            text = TextUtils.stringOrSpannedString(text);
3158        }
3159
3160        if (mAutoLinkMask != 0) {
3161            Spannable s2;
3162
3163            if (type == BufferType.EDITABLE || text instanceof Spannable) {
3164                s2 = (Spannable) text;
3165            } else {
3166                s2 = mSpannableFactory.newSpannable(text);
3167            }
3168
3169            if (Linkify.addLinks(s2, mAutoLinkMask)) {
3170                text = s2;
3171                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
3172
3173                /*
3174                 * We must go ahead and set the text before changing the
3175                 * movement method, because setMovementMethod() may call
3176                 * setText() again to try to upgrade the buffer type.
3177                 */
3178                mText = text;
3179
3180                // Do not change the movement method for text that support text selection as it
3181                // would prevent an arbitrary cursor displacement.
3182                if (mLinksClickable && !textCanBeSelected()) {
3183                    setMovementMethod(LinkMovementMethod.getInstance());
3184                }
3185            }
3186        }
3187
3188        mBufferType = type;
3189        mText = text;
3190
3191        if (mTransformation == null) {
3192            mTransformed = text;
3193        } else {
3194            mTransformed = mTransformation.getTransformation(text, this);
3195        }
3196
3197        final int textLength = text.length();
3198
3199        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
3200            Spannable sp = (Spannable) text;
3201
3202            // Remove any ChangeWatchers that might have come
3203            // from other TextViews.
3204            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
3205            final int count = watchers.length;
3206            for (int i = 0; i < count; i++)
3207                sp.removeSpan(watchers[i]);
3208
3209            if (mChangeWatcher == null)
3210                mChangeWatcher = new ChangeWatcher();
3211
3212            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
3213                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
3214
3215            if (mEditor != null && getEditor().mKeyListener != null) {
3216                sp.setSpan(getEditor().mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
3217            }
3218
3219            if (mTransformation != null) {
3220                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
3221            }
3222
3223            if (mMovement != null) {
3224                mMovement.initialize(this, (Spannable) text);
3225
3226                /*
3227                 * Initializing the movement method will have set the
3228                 * selection, so reset mSelectionMoved to keep that from
3229                 * interfering with the normal on-focus selection-setting.
3230                 */
3231                if (mEditor != null) getEditor().mSelectionMoved = false;
3232            }
3233        }
3234
3235        if (mLayout != null) {
3236            checkForRelayout();
3237        }
3238
3239        sendOnTextChanged(text, 0, oldlen, textLength);
3240        onTextChanged(text, 0, oldlen, textLength);
3241
3242        if (needEditableForNotification) {
3243            sendAfterTextChanged((Editable) text);
3244        }
3245
3246        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
3247        prepareCursorControllers();
3248    }
3249
3250    /**
3251     * Sets the TextView to display the specified slice of the specified
3252     * char array.  You must promise that you will not change the contents
3253     * of the array except for right before another call to setText(),
3254     * since the TextView has no way to know that the text
3255     * has changed and that it needs to invalidate and re-layout.
3256     */
3257    public final void setText(char[] text, int start, int len) {
3258        int oldlen = 0;
3259
3260        if (start < 0 || len < 0 || start + len > text.length) {
3261            throw new IndexOutOfBoundsException(start + ", " + len);
3262        }
3263
3264        /*
3265         * We must do the before-notification here ourselves because if
3266         * the old text is a CharWrapper we destroy it before calling
3267         * into the normal path.
3268         */
3269        if (mText != null) {
3270            oldlen = mText.length();
3271            sendBeforeTextChanged(mText, 0, oldlen, len);
3272        } else {
3273            sendBeforeTextChanged("", 0, 0, len);
3274        }
3275
3276        if (mCharWrapper == null) {
3277            mCharWrapper = new CharWrapper(text, start, len);
3278        } else {
3279            mCharWrapper.set(text, start, len);
3280        }
3281
3282        setText(mCharWrapper, mBufferType, false, oldlen);
3283    }
3284
3285    /**
3286     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
3287     * except that the cursor position (if any) is retained in the new text.
3288     *
3289     * @see #setText(CharSequence, android.widget.TextView.BufferType)
3290     */
3291    public final void setTextKeepState(CharSequence text, BufferType type) {
3292        int start = getSelectionStart();
3293        int end = getSelectionEnd();
3294        int len = text.length();
3295
3296        setText(text, type);
3297
3298        if (start >= 0 || end >= 0) {
3299            if (mText instanceof Spannable) {
3300                Selection.setSelection((Spannable) mText,
3301                                       Math.max(0, Math.min(start, len)),
3302                                       Math.max(0, Math.min(end, len)));
3303            }
3304        }
3305    }
3306
3307    @android.view.RemotableViewMethod
3308    public final void setText(int resid) {
3309        setText(getContext().getResources().getText(resid));
3310    }
3311
3312    public final void setText(int resid, BufferType type) {
3313        setText(getContext().getResources().getText(resid), type);
3314    }
3315
3316    /**
3317     * Sets the text to be displayed when the text of the TextView is empty.
3318     * Null means to use the normal empty text. The hint does not currently
3319     * participate in determining the size of the view.
3320     *
3321     * @attr ref android.R.styleable#TextView_hint
3322     */
3323    @android.view.RemotableViewMethod
3324    public final void setHint(CharSequence hint) {
3325        mHint = TextUtils.stringOrSpannedString(hint);
3326
3327        if (mLayout != null) {
3328            checkForRelayout();
3329        }
3330
3331        if (mText.length() == 0) {
3332            invalidate();
3333        }
3334
3335        // Invalidate display list if hint will be used
3336        if (mEditor != null && mText.length() == 0 && mHint != null) {
3337            getEditor().invalidateTextDisplayList();
3338        }
3339    }
3340
3341    /**
3342     * Sets the text to be displayed when the text of the TextView is empty,
3343     * from a resource.
3344     *
3345     * @attr ref android.R.styleable#TextView_hint
3346     */
3347    @android.view.RemotableViewMethod
3348    public final void setHint(int resid) {
3349        setHint(getContext().getResources().getText(resid));
3350    }
3351
3352    /**
3353     * Returns the hint that is displayed when the text of the TextView
3354     * is empty.
3355     *
3356     * @attr ref android.R.styleable#TextView_hint
3357     */
3358    @ViewDebug.CapturedViewProperty
3359    public CharSequence getHint() {
3360        return mHint;
3361    }
3362
3363    private static boolean isMultilineInputType(int type) {
3364        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
3365            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
3366    }
3367
3368    /**
3369     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
3370     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
3371     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
3372     * then a soft keyboard will not be displayed for this text view.
3373     *
3374     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
3375     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
3376     * type.
3377     *
3378     * @see #getInputType()
3379     * @see #setRawInputType(int)
3380     * @see android.text.InputType
3381     * @attr ref android.R.styleable#TextView_inputType
3382     */
3383    public void setInputType(int type) {
3384        final boolean wasPassword = isPasswordInputType(getInputType());
3385        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
3386        setInputType(type, false);
3387        final boolean isPassword = isPasswordInputType(type);
3388        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
3389        boolean forceUpdate = false;
3390        if (isPassword) {
3391            setTransformationMethod(PasswordTransformationMethod.getInstance());
3392            setTypefaceByIndex(MONOSPACE, 0);
3393        } else if (isVisiblePassword) {
3394            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3395                forceUpdate = true;
3396            }
3397            setTypefaceByIndex(MONOSPACE, 0);
3398        } else if (wasPassword || wasVisiblePassword) {
3399            // not in password mode, clean up typeface and transformation
3400            setTypefaceByIndex(-1, -1);
3401            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3402                forceUpdate = true;
3403            }
3404        }
3405
3406        boolean singleLine = !isMultilineInputType(type);
3407
3408        // We need to update the single line mode if it has changed or we
3409        // were previously in password mode.
3410        if (mSingleLine != singleLine || forceUpdate) {
3411            // Change single line mode, but only change the transformation if
3412            // we are not in password mode.
3413            applySingleLine(singleLine, !isPassword, true);
3414        }
3415
3416        if (!isSuggestionsEnabled()) {
3417            mText = removeSuggestionSpans(mText);
3418        }
3419
3420        InputMethodManager imm = InputMethodManager.peekInstance();
3421        if (imm != null) imm.restartInput(this);
3422    }
3423
3424    /**
3425     * It would be better to rely on the input type for everything. A password inputType should have
3426     * a password transformation. We should hence use isPasswordInputType instead of this method.
3427     *
3428     * We should:
3429     * - Call setInputType in setKeyListener instead of changing the input type directly (which
3430     * would install the correct transformation).
3431     * - Refuse the installation of a non-password transformation in setTransformation if the input
3432     * type is password.
3433     *
3434     * However, this is like this for legacy reasons and we cannot break existing apps. This method
3435     * is useful since it matches what the user can see (obfuscated text or not).
3436     *
3437     * @return true if the current transformation method is of the password type.
3438     */
3439    private boolean hasPasswordTransformationMethod() {
3440        return mTransformation instanceof PasswordTransformationMethod;
3441    }
3442
3443    private static boolean isPasswordInputType(int inputType) {
3444        final int variation =
3445                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3446        return variation
3447                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
3448                || variation
3449                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
3450                || variation
3451                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
3452    }
3453
3454    private static boolean isVisiblePasswordInputType(int inputType) {
3455        final int variation =
3456                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3457        return variation
3458                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
3459    }
3460
3461    /**
3462     * Directly change the content type integer of the text view, without
3463     * modifying any other state.
3464     * @see #setInputType(int)
3465     * @see android.text.InputType
3466     * @attr ref android.R.styleable#TextView_inputType
3467     */
3468    public void setRawInputType(int type) {
3469        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
3470        createEditorIfNeeded("non null input type");
3471        getEditor().mInputType = type;
3472    }
3473
3474    private void setInputType(int type, boolean direct) {
3475        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
3476        KeyListener input;
3477        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
3478            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
3479            TextKeyListener.Capitalize cap;
3480            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
3481                cap = TextKeyListener.Capitalize.CHARACTERS;
3482            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
3483                cap = TextKeyListener.Capitalize.WORDS;
3484            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
3485                cap = TextKeyListener.Capitalize.SENTENCES;
3486            } else {
3487                cap = TextKeyListener.Capitalize.NONE;
3488            }
3489            input = TextKeyListener.getInstance(autotext, cap);
3490        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
3491            input = DigitsKeyListener.getInstance(
3492                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
3493                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
3494        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
3495            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
3496                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
3497                    input = DateKeyListener.getInstance();
3498                    break;
3499                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
3500                    input = TimeKeyListener.getInstance();
3501                    break;
3502                default:
3503                    input = DateTimeKeyListener.getInstance();
3504                    break;
3505            }
3506        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
3507            input = DialerKeyListener.getInstance();
3508        } else {
3509            input = TextKeyListener.getInstance();
3510        }
3511        setRawInputType(type);
3512        if (direct) {
3513            createEditorIfNeeded("setInputType");
3514            getEditor().mKeyListener = input;
3515        } else {
3516            setKeyListenerOnly(input);
3517        }
3518    }
3519
3520    /**
3521     * Get the type of the editable content.
3522     *
3523     * @see #setInputType(int)
3524     * @see android.text.InputType
3525     */
3526    public int getInputType() {
3527        return mEditor == null ? EditorInfo.TYPE_NULL : getEditor().mInputType;
3528    }
3529
3530    /**
3531     * Change the editor type integer associated with the text view, which
3532     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
3533     * has focus.
3534     * @see #getImeOptions
3535     * @see android.view.inputmethod.EditorInfo
3536     * @attr ref android.R.styleable#TextView_imeOptions
3537     */
3538    public void setImeOptions(int imeOptions) {
3539        createEditorIfNeeded("IME options specified");
3540        if (getEditor().mInputContentType == null) {
3541            getEditor().mInputContentType = new InputContentType();
3542        }
3543        getEditor().mInputContentType.imeOptions = imeOptions;
3544    }
3545
3546    /**
3547     * Get the type of the IME editor.
3548     *
3549     * @see #setImeOptions(int)
3550     * @see android.view.inputmethod.EditorInfo
3551     */
3552    public int getImeOptions() {
3553        return mEditor != null && getEditor().mInputContentType != null
3554                ? getEditor().mInputContentType.imeOptions : EditorInfo.IME_NULL;
3555    }
3556
3557    /**
3558     * Change the custom IME action associated with the text view, which
3559     * will be reported to an IME with {@link EditorInfo#actionLabel}
3560     * and {@link EditorInfo#actionId} when it has focus.
3561     * @see #getImeActionLabel
3562     * @see #getImeActionId
3563     * @see android.view.inputmethod.EditorInfo
3564     * @attr ref android.R.styleable#TextView_imeActionLabel
3565     * @attr ref android.R.styleable#TextView_imeActionId
3566     */
3567    public void setImeActionLabel(CharSequence label, int actionId) {
3568        createEditorIfNeeded("IME action label specified");
3569        if (getEditor().mInputContentType == null) {
3570            getEditor().mInputContentType = new InputContentType();
3571        }
3572        getEditor().mInputContentType.imeActionLabel = label;
3573        getEditor().mInputContentType.imeActionId = actionId;
3574    }
3575
3576    /**
3577     * Get the IME action label previous set with {@link #setImeActionLabel}.
3578     *
3579     * @see #setImeActionLabel
3580     * @see android.view.inputmethod.EditorInfo
3581     */
3582    public CharSequence getImeActionLabel() {
3583        return mEditor != null && getEditor().mInputContentType != null
3584                ? getEditor().mInputContentType.imeActionLabel : null;
3585    }
3586
3587    /**
3588     * Get the IME action ID previous set with {@link #setImeActionLabel}.
3589     *
3590     * @see #setImeActionLabel
3591     * @see android.view.inputmethod.EditorInfo
3592     */
3593    public int getImeActionId() {
3594        return mEditor != null && getEditor().mInputContentType != null
3595                ? getEditor().mInputContentType.imeActionId : 0;
3596    }
3597
3598    /**
3599     * Set a special listener to be called when an action is performed
3600     * on the text view.  This will be called when the enter key is pressed,
3601     * or when an action supplied to the IME is selected by the user.  Setting
3602     * this means that the normal hard key event will not insert a newline
3603     * into the text view, even if it is multi-line; holding down the ALT
3604     * modifier will, however, allow the user to insert a newline character.
3605     */
3606    public void setOnEditorActionListener(OnEditorActionListener l) {
3607        createEditorIfNeeded("Editor action listener set");
3608        if (getEditor().mInputContentType == null) {
3609            getEditor().mInputContentType = new InputContentType();
3610        }
3611        getEditor().mInputContentType.onEditorActionListener = l;
3612    }
3613
3614    /**
3615     * Called when an attached input method calls
3616     * {@link InputConnection#performEditorAction(int)
3617     * InputConnection.performEditorAction()}
3618     * for this text view.  The default implementation will call your action
3619     * listener supplied to {@link #setOnEditorActionListener}, or perform
3620     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
3621     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
3622     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
3623     * EditorInfo.IME_ACTION_DONE}.
3624     *
3625     * <p>For backwards compatibility, if no IME options have been set and the
3626     * text view would not normally advance focus on enter, then
3627     * the NEXT and DONE actions received here will be turned into an enter
3628     * key down/up pair to go through the normal key handling.
3629     *
3630     * @param actionCode The code of the action being performed.
3631     *
3632     * @see #setOnEditorActionListener
3633     */
3634    public void onEditorAction(int actionCode) {
3635        final InputContentType ict = mEditor == null ? null : getEditor().mInputContentType;
3636        if (ict != null) {
3637            if (ict.onEditorActionListener != null) {
3638                if (ict.onEditorActionListener.onEditorAction(this,
3639                        actionCode, null)) {
3640                    return;
3641                }
3642            }
3643
3644            // This is the handling for some default action.
3645            // Note that for backwards compatibility we don't do this
3646            // default handling if explicit ime options have not been given,
3647            // instead turning this into the normal enter key codes that an
3648            // app may be expecting.
3649            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
3650                View v = focusSearch(FOCUS_FORWARD);
3651                if (v != null) {
3652                    if (!v.requestFocus(FOCUS_FORWARD)) {
3653                        throw new IllegalStateException("focus search returned a view " +
3654                                "that wasn't able to take focus!");
3655                    }
3656                }
3657                return;
3658
3659            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
3660                View v = focusSearch(FOCUS_BACKWARD);
3661                if (v != null) {
3662                    if (!v.requestFocus(FOCUS_BACKWARD)) {
3663                        throw new IllegalStateException("focus search returned a view " +
3664                                "that wasn't able to take focus!");
3665                    }
3666                }
3667                return;
3668
3669            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
3670                InputMethodManager imm = InputMethodManager.peekInstance();
3671                if (imm != null && imm.isActive(this)) {
3672                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
3673                }
3674                return;
3675            }
3676        }
3677
3678        ViewRootImpl viewRootImpl = getViewRootImpl();
3679        if (viewRootImpl != null) {
3680            long eventTime = SystemClock.uptimeMillis();
3681            viewRootImpl.dispatchKeyFromIme(
3682                    new KeyEvent(eventTime, eventTime,
3683                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
3684                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
3685                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3686                    | KeyEvent.FLAG_EDITOR_ACTION));
3687            viewRootImpl.dispatchKeyFromIme(
3688                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
3689                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
3690                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
3691                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3692                    | KeyEvent.FLAG_EDITOR_ACTION));
3693        }
3694    }
3695
3696    /**
3697     * Set the private content type of the text, which is the
3698     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
3699     * field that will be filled in when creating an input connection.
3700     *
3701     * @see #getPrivateImeOptions()
3702     * @see EditorInfo#privateImeOptions
3703     * @attr ref android.R.styleable#TextView_privateImeOptions
3704     */
3705    public void setPrivateImeOptions(String type) {
3706        createEditorIfNeeded("Private IME option set");
3707        if (getEditor().mInputContentType == null)
3708            getEditor().mInputContentType = new InputContentType();
3709        getEditor().mInputContentType.privateImeOptions = type;
3710    }
3711
3712    /**
3713     * Get the private type of the content.
3714     *
3715     * @see #setPrivateImeOptions(String)
3716     * @see EditorInfo#privateImeOptions
3717     */
3718    public String getPrivateImeOptions() {
3719        return mEditor != null && getEditor().mInputContentType != null
3720                ? getEditor().mInputContentType.privateImeOptions : null;
3721    }
3722
3723    /**
3724     * Set the extra input data of the text, which is the
3725     * {@link EditorInfo#extras TextBoxAttribute.extras}
3726     * Bundle that will be filled in when creating an input connection.  The
3727     * given integer is the resource ID of an XML resource holding an
3728     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
3729     *
3730     * @see #getInputExtras(boolean)
3731     * @see EditorInfo#extras
3732     * @attr ref android.R.styleable#TextView_editorExtras
3733     */
3734    public void setInputExtras(int xmlResId) throws XmlPullParserException, IOException {
3735        createEditorIfNeeded("Input extra set");
3736        XmlResourceParser parser = getResources().getXml(xmlResId);
3737        if (getEditor().mInputContentType == null)
3738            getEditor().mInputContentType = new InputContentType();
3739        getEditor().mInputContentType.extras = new Bundle();
3740        getResources().parseBundleExtras(parser, getEditor().mInputContentType.extras);
3741    }
3742
3743    /**
3744     * Retrieve the input extras currently associated with the text view, which
3745     * can be viewed as well as modified.
3746     *
3747     * @param create If true, the extras will be created if they don't already
3748     * exist.  Otherwise, null will be returned if none have been created.
3749     * @see #setInputExtras(int)
3750     * @see EditorInfo#extras
3751     * @attr ref android.R.styleable#TextView_editorExtras
3752     */
3753    public Bundle getInputExtras(boolean create) {
3754        if (mEditor == null && !create) return null;
3755        createEditorIfNeeded("get Input extra");
3756        if (getEditor().mInputContentType == null) {
3757            if (!create) return null;
3758            getEditor().mInputContentType = new InputContentType();
3759        }
3760        if (getEditor().mInputContentType.extras == null) {
3761            if (!create) return null;
3762            getEditor().mInputContentType.extras = new Bundle();
3763        }
3764        return getEditor().mInputContentType.extras;
3765    }
3766
3767    /**
3768     * Returns the error message that was set to be displayed with
3769     * {@link #setError}, or <code>null</code> if no error was set
3770     * or if it the error was cleared by the widget after user input.
3771     */
3772    public CharSequence getError() {
3773        return mEditor == null ? null : getEditor().mError;
3774    }
3775
3776    /**
3777     * Sets the right-hand compound drawable of the TextView to the "error"
3778     * icon and sets an error message that will be displayed in a popup when
3779     * the TextView has focus.  The icon and error message will be reset to
3780     * null when any key events cause changes to the TextView's text.  If the
3781     * <code>error</code> is <code>null</code>, the error message and icon
3782     * will be cleared.
3783     */
3784    @android.view.RemotableViewMethod
3785    public void setError(CharSequence error) {
3786        if (error == null) {
3787            setError(null, null);
3788        } else {
3789            Drawable dr = getContext().getResources().
3790                getDrawable(com.android.internal.R.drawable.indicator_input_error);
3791
3792            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
3793            setError(error, dr);
3794        }
3795    }
3796
3797    /**
3798     * Sets the right-hand compound drawable of the TextView to the specified
3799     * icon and sets an error message that will be displayed in a popup when
3800     * the TextView has focus.  The icon and error message will be reset to
3801     * null when any key events cause changes to the TextView's text.  The
3802     * drawable must already have had {@link Drawable#setBounds} set on it.
3803     * If the <code>error</code> is <code>null</code>, the error message will
3804     * be cleared (and you should provide a <code>null</code> icon as well).
3805     */
3806    public void setError(CharSequence error, Drawable icon) {
3807        createEditorIfNeeded("setError");
3808        error = TextUtils.stringOrSpannedString(error);
3809
3810        getEditor().mError = error;
3811        getEditor().mErrorWasChanged = true;
3812        final Drawables dr = mDrawables;
3813        if (dr != null) {
3814            switch (getResolvedLayoutDirection()) {
3815                default:
3816                case LAYOUT_DIRECTION_LTR:
3817                    setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop, icon,
3818                            dr.mDrawableBottom);
3819                    break;
3820                case LAYOUT_DIRECTION_RTL:
3821                    setCompoundDrawables(icon, dr.mDrawableTop, dr.mDrawableRight,
3822                            dr.mDrawableBottom);
3823                    break;
3824            }
3825        } else {
3826            setCompoundDrawables(null, null, icon, null);
3827        }
3828
3829        if (error == null) {
3830            if (getEditor().mErrorPopup != null) {
3831                if (getEditor().mErrorPopup.isShowing()) {
3832                    getEditor().mErrorPopup.dismiss();
3833                }
3834
3835                getEditor().mErrorPopup = null;
3836            }
3837        } else {
3838            if (isFocused()) {
3839                showError();
3840            }
3841        }
3842    }
3843
3844    private void showError() {
3845        if (getWindowToken() == null) {
3846            getEditor().mShowErrorAfterAttach = true;
3847            return;
3848        }
3849
3850        if (getEditor().mErrorPopup == null) {
3851            LayoutInflater inflater = LayoutInflater.from(getContext());
3852            final TextView err = (TextView) inflater.inflate(
3853                    com.android.internal.R.layout.textview_hint, null);
3854
3855            final float scale = getResources().getDisplayMetrics().density;
3856            getEditor().mErrorPopup = new ErrorPopup(err, (int) (200 * scale + 0.5f), (int) (50 * scale + 0.5f));
3857            getEditor().mErrorPopup.setFocusable(false);
3858            // The user is entering text, so the input method is needed.  We
3859            // don't want the popup to be displayed on top of it.
3860            getEditor().mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED);
3861        }
3862
3863        TextView tv = (TextView) getEditor().mErrorPopup.getContentView();
3864        chooseSize(getEditor().mErrorPopup, getEditor().mError, tv);
3865        tv.setText(getEditor().mError);
3866
3867        getEditor().mErrorPopup.showAsDropDown(this, getErrorX(), getErrorY());
3868        getEditor().mErrorPopup.fixDirection(getEditor().mErrorPopup.isAboveAnchor());
3869    }
3870
3871    /**
3872     * Returns the Y offset to make the pointy top of the error point
3873     * at the middle of the error icon.
3874     */
3875    private int getErrorX() {
3876        /*
3877         * The "25" is the distance between the point and the right edge
3878         * of the background
3879         */
3880        final float scale = getResources().getDisplayMetrics().density;
3881
3882        final Drawables dr = mDrawables;
3883        return getWidth() - getEditor().mErrorPopup.getWidth() - getPaddingRight() -
3884                (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f);
3885    }
3886
3887    /**
3888     * Returns the Y offset to make the pointy top of the error point
3889     * at the bottom of the error icon.
3890     */
3891    private int getErrorY() {
3892        /*
3893         * Compound, not extended, because the icon is not clipped
3894         * if the text height is smaller.
3895         */
3896        final int compoundPaddingTop = getCompoundPaddingTop();
3897        int vspace = mBottom - mTop - getCompoundPaddingBottom() - compoundPaddingTop;
3898
3899        final Drawables dr = mDrawables;
3900        int icontop = compoundPaddingTop +
3901                (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2;
3902
3903        /*
3904         * The "2" is the distance between the point and the top edge
3905         * of the background.
3906         */
3907        final float scale = getResources().getDisplayMetrics().density;
3908        return icontop + (dr != null ? dr.mDrawableHeightRight : 0) - getHeight() -
3909                (int) (2 * scale + 0.5f);
3910    }
3911
3912    private void hideError() {
3913        if (getEditor().mErrorPopup != null) {
3914            if (getEditor().mErrorPopup.isShowing()) {
3915                getEditor().mErrorPopup.dismiss();
3916            }
3917        }
3918
3919        getEditor().mShowErrorAfterAttach = false;
3920    }
3921
3922    private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) {
3923        int wid = tv.getPaddingLeft() + tv.getPaddingRight();
3924        int ht = tv.getPaddingTop() + tv.getPaddingBottom();
3925
3926        int defaultWidthInPixels = getResources().getDimensionPixelSize(
3927                com.android.internal.R.dimen.textview_error_popup_default_width);
3928        Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels,
3929                                    Layout.Alignment.ALIGN_NORMAL, 1, 0, true);
3930        float max = 0;
3931        for (int i = 0; i < l.getLineCount(); i++) {
3932            max = Math.max(max, l.getLineWidth(i));
3933        }
3934
3935        /*
3936         * Now set the popup size to be big enough for the text plus the border capped
3937         * to DEFAULT_MAX_POPUP_WIDTH
3938         */
3939        pop.setWidth(wid + (int) Math.ceil(max));
3940        pop.setHeight(ht + l.getHeight());
3941    }
3942
3943
3944    @Override
3945    protected boolean setFrame(int l, int t, int r, int b) {
3946        boolean result = super.setFrame(l, t, r, b);
3947
3948        if (mEditor != null) getEditor().setFrame();
3949
3950        restartMarqueeIfNeeded();
3951
3952        return result;
3953    }
3954
3955    private void restartMarqueeIfNeeded() {
3956        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3957            mRestartMarquee = false;
3958            startMarquee();
3959        }
3960    }
3961
3962    /**
3963     * Sets the list of input filters that will be used if the buffer is
3964     * Editable. Has no effect otherwise.
3965     *
3966     * @attr ref android.R.styleable#TextView_maxLength
3967     */
3968    public void setFilters(InputFilter[] filters) {
3969        if (filters == null) {
3970            throw new IllegalArgumentException();
3971        }
3972
3973        mFilters = filters;
3974
3975        if (mText instanceof Editable) {
3976            setFilters((Editable) mText, filters);
3977        }
3978    }
3979
3980    /**
3981     * Sets the list of input filters on the specified Editable,
3982     * and includes mInput in the list if it is an InputFilter.
3983     */
3984    private void setFilters(Editable e, InputFilter[] filters) {
3985        if (mEditor != null && getEditor().mKeyListener instanceof InputFilter) {
3986            InputFilter[] nf = new InputFilter[filters.length + 1];
3987
3988            System.arraycopy(filters, 0, nf, 0, filters.length);
3989            nf[filters.length] = (InputFilter) getEditor().mKeyListener;
3990
3991            e.setFilters(nf);
3992        } else {
3993            e.setFilters(filters);
3994        }
3995    }
3996
3997    /**
3998     * Returns the current list of input filters.
3999     */
4000    public InputFilter[] getFilters() {
4001        return mFilters;
4002    }
4003
4004    /////////////////////////////////////////////////////////////////////////
4005
4006    private int getVerticalOffset(boolean forceNormal) {
4007        int voffset = 0;
4008        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4009
4010        Layout l = mLayout;
4011        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4012            l = mHintLayout;
4013        }
4014
4015        if (gravity != Gravity.TOP) {
4016            int boxht;
4017
4018            if (l == mHintLayout) {
4019                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
4020                        getCompoundPaddingBottom();
4021            } else {
4022                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
4023                        getExtendedPaddingBottom();
4024            }
4025            int textht = l.getHeight();
4026
4027            if (textht < boxht) {
4028                if (gravity == Gravity.BOTTOM)
4029                    voffset = boxht - textht;
4030                else // (gravity == Gravity.CENTER_VERTICAL)
4031                    voffset = (boxht - textht) >> 1;
4032            }
4033        }
4034        return voffset;
4035    }
4036
4037    private int getBottomVerticalOffset(boolean forceNormal) {
4038        int voffset = 0;
4039        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4040
4041        Layout l = mLayout;
4042        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4043            l = mHintLayout;
4044        }
4045
4046        if (gravity != Gravity.BOTTOM) {
4047            int boxht;
4048
4049            if (l == mHintLayout) {
4050                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
4051                        getCompoundPaddingBottom();
4052            } else {
4053                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
4054                        getExtendedPaddingBottom();
4055            }
4056            int textht = l.getHeight();
4057
4058            if (textht < boxht) {
4059                if (gravity == Gravity.TOP)
4060                    voffset = boxht - textht;
4061                else // (gravity == Gravity.CENTER_VERTICAL)
4062                    voffset = (boxht - textht) >> 1;
4063            }
4064        }
4065        return voffset;
4066    }
4067
4068    private void invalidateCursorPath() {
4069        if (mHighlightPathBogus) {
4070            invalidateCursor();
4071        } else {
4072            final int horizontalPadding = getCompoundPaddingLeft();
4073            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4074
4075            if (getEditor().mCursorCount == 0) {
4076                synchronized (TEMP_RECTF) {
4077                    /*
4078                     * The reason for this concern about the thickness of the
4079                     * cursor and doing the floor/ceil on the coordinates is that
4080                     * some EditTexts (notably textfields in the Browser) have
4081                     * anti-aliased text where not all the characters are
4082                     * necessarily at integer-multiple locations.  This should
4083                     * make sure the entire cursor gets invalidated instead of
4084                     * sometimes missing half a pixel.
4085                     */
4086                    float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
4087                    if (thick < 1.0f) {
4088                        thick = 1.0f;
4089                    }
4090
4091                    thick /= 2.0f;
4092
4093                    // mHighlightPath is guaranteed to be non null at that point.
4094                    mHighlightPath.computeBounds(TEMP_RECTF, false);
4095
4096                    invalidate((int) FloatMath.floor(horizontalPadding + TEMP_RECTF.left - thick),
4097                            (int) FloatMath.floor(verticalPadding + TEMP_RECTF.top - thick),
4098                            (int) FloatMath.ceil(horizontalPadding + TEMP_RECTF.right + thick),
4099                            (int) FloatMath.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
4100                }
4101            } else {
4102                for (int i = 0; i < getEditor().mCursorCount; i++) {
4103                    Rect bounds = getEditor().mCursorDrawable[i].getBounds();
4104                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
4105                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
4106                }
4107            }
4108        }
4109    }
4110
4111    private void invalidateCursor() {
4112        int where = getSelectionEnd();
4113
4114        invalidateCursor(where, where, where);
4115    }
4116
4117    private void invalidateCursor(int a, int b, int c) {
4118        if (a >= 0 || b >= 0 || c >= 0) {
4119            int start = Math.min(Math.min(a, b), c);
4120            int end = Math.max(Math.max(a, b), c);
4121            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
4122        }
4123    }
4124
4125    /**
4126     * Invalidates the region of text enclosed between the start and end text offsets.
4127     *
4128     * @hide
4129     */
4130    void invalidateRegion(int start, int end, boolean invalidateCursor) {
4131        if (mLayout == null) {
4132            invalidate();
4133        } else {
4134                int lineStart = mLayout.getLineForOffset(start);
4135                int top = mLayout.getLineTop(lineStart);
4136
4137                // This is ridiculous, but the descent from the line above
4138                // can hang down into the line we really want to redraw,
4139                // so we have to invalidate part of the line above to make
4140                // sure everything that needs to be redrawn really is.
4141                // (But not the whole line above, because that would cause
4142                // the same problem with the descenders on the line above it!)
4143                if (lineStart > 0) {
4144                    top -= mLayout.getLineDescent(lineStart - 1);
4145                }
4146
4147                int lineEnd;
4148
4149                if (start == end)
4150                    lineEnd = lineStart;
4151                else
4152                    lineEnd = mLayout.getLineForOffset(end);
4153
4154                int bottom = mLayout.getLineBottom(lineEnd);
4155
4156                // mEditor can be null in case selection is set programmatically.
4157                if (invalidateCursor && mEditor != null) {
4158                    for (int i = 0; i < getEditor().mCursorCount; i++) {
4159                        Rect bounds = getEditor().mCursorDrawable[i].getBounds();
4160                        top = Math.min(top, bounds.top);
4161                        bottom = Math.max(bottom, bounds.bottom);
4162                    }
4163                }
4164
4165                final int compoundPaddingLeft = getCompoundPaddingLeft();
4166                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4167
4168                int left, right;
4169                if (lineStart == lineEnd && !invalidateCursor) {
4170                    left = (int) mLayout.getPrimaryHorizontal(start);
4171                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
4172                    left += compoundPaddingLeft;
4173                    right += compoundPaddingLeft;
4174                } else {
4175                    // Rectangle bounding box when the region spans several lines
4176                    left = compoundPaddingLeft;
4177                    right = getWidth() - getCompoundPaddingRight();
4178                }
4179
4180                invalidate(mScrollX + left, verticalPadding + top,
4181                        mScrollX + right, verticalPadding + bottom);
4182        }
4183    }
4184
4185    private void registerForPreDraw() {
4186        if (!mPreDrawRegistered) {
4187            getViewTreeObserver().addOnPreDrawListener(this);
4188            mPreDrawRegistered = true;
4189        }
4190    }
4191
4192    /**
4193     * {@inheritDoc}
4194     */
4195    public boolean onPreDraw() {
4196        if (mLayout == null) {
4197            assumeLayout();
4198        }
4199
4200        boolean changed = false;
4201
4202        if (mMovement != null) {
4203            /* This code also provides auto-scrolling when a cursor is moved using a
4204             * CursorController (insertion point or selection limits).
4205             * For selection, ensure start or end is visible depending on controller's state.
4206             */
4207            int curs = getSelectionEnd();
4208            // Do not create the controller if it is not already created.
4209            if (mEditor != null && getEditor().mSelectionModifierCursorController != null &&
4210                    getEditor().mSelectionModifierCursorController.isSelectionStartDragged()) {
4211                curs = getSelectionStart();
4212            }
4213
4214            /*
4215             * TODO: This should really only keep the end in view if
4216             * it already was before the text changed.  I'm not sure
4217             * of a good way to tell from here if it was.
4218             */
4219            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
4220                curs = mText.length();
4221            }
4222
4223            if (curs >= 0) {
4224                changed = bringPointIntoView(curs);
4225            }
4226        } else {
4227            changed = bringTextIntoView();
4228        }
4229
4230        // This has to be checked here since:
4231        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
4232        //   a screen rotation) since layout is not yet initialized at that point.
4233        if (mEditor != null && getEditor().mCreatedWithASelection) {
4234            startSelectionActionMode();
4235            getEditor().mCreatedWithASelection = false;
4236        }
4237
4238        // Phone specific code (there is no ExtractEditText on tablets).
4239        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
4240        // not be set. Do the test here instead.
4241        if (this instanceof ExtractEditText && hasSelection()) {
4242            startSelectionActionMode();
4243        }
4244
4245        getViewTreeObserver().removeOnPreDrawListener(this);
4246        mPreDrawRegistered = false;
4247
4248        return !changed;
4249    }
4250
4251    @Override
4252    protected void onAttachedToWindow() {
4253        super.onAttachedToWindow();
4254
4255        mTemporaryDetach = false;
4256
4257        if (mEditor != null && getEditor().mShowErrorAfterAttach) {
4258            showError();
4259            getEditor().mShowErrorAfterAttach = false;
4260        }
4261
4262        // Resolve drawables as the layout direction has been resolved
4263        resolveDrawables();
4264
4265        if (mEditor != null) getEditor().onAttachedToWindow();
4266    }
4267
4268    @Override
4269    protected void onDetachedFromWindow() {
4270        super.onDetachedFromWindow();
4271
4272        if (mPreDrawRegistered) {
4273            getViewTreeObserver().removeOnPreDrawListener(this);
4274            mPreDrawRegistered = false;
4275        }
4276
4277        resetResolvedDrawables();
4278
4279        if (mEditor != null) getEditor().onDetachedFromWindow();
4280    }
4281
4282    @Override
4283    public void onScreenStateChanged(int screenState) {
4284        super.onScreenStateChanged(screenState);
4285        if (mEditor != null) getEditor().onScreenStateChanged(screenState);
4286    }
4287
4288    @Override
4289    protected boolean isPaddingOffsetRequired() {
4290        return mShadowRadius != 0 || mDrawables != null;
4291    }
4292
4293    @Override
4294    protected int getLeftPaddingOffset() {
4295        return getCompoundPaddingLeft() - mPaddingLeft +
4296                (int) Math.min(0, mShadowDx - mShadowRadius);
4297    }
4298
4299    @Override
4300    protected int getTopPaddingOffset() {
4301        return (int) Math.min(0, mShadowDy - mShadowRadius);
4302    }
4303
4304    @Override
4305    protected int getBottomPaddingOffset() {
4306        return (int) Math.max(0, mShadowDy + mShadowRadius);
4307    }
4308
4309    @Override
4310    protected int getRightPaddingOffset() {
4311        return -(getCompoundPaddingRight() - mPaddingRight) +
4312                (int) Math.max(0, mShadowDx + mShadowRadius);
4313    }
4314
4315    @Override
4316    protected boolean verifyDrawable(Drawable who) {
4317        final boolean verified = super.verifyDrawable(who);
4318        if (!verified && mDrawables != null) {
4319            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
4320                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom ||
4321                    who == mDrawables.mDrawableStart || who == mDrawables.mDrawableEnd;
4322        }
4323        return verified;
4324    }
4325
4326    @Override
4327    public void jumpDrawablesToCurrentState() {
4328        super.jumpDrawablesToCurrentState();
4329        if (mDrawables != null) {
4330            if (mDrawables.mDrawableLeft != null) {
4331                mDrawables.mDrawableLeft.jumpToCurrentState();
4332            }
4333            if (mDrawables.mDrawableTop != null) {
4334                mDrawables.mDrawableTop.jumpToCurrentState();
4335            }
4336            if (mDrawables.mDrawableRight != null) {
4337                mDrawables.mDrawableRight.jumpToCurrentState();
4338            }
4339            if (mDrawables.mDrawableBottom != null) {
4340                mDrawables.mDrawableBottom.jumpToCurrentState();
4341            }
4342            if (mDrawables.mDrawableStart != null) {
4343                mDrawables.mDrawableStart.jumpToCurrentState();
4344            }
4345            if (mDrawables.mDrawableEnd != null) {
4346                mDrawables.mDrawableEnd.jumpToCurrentState();
4347            }
4348        }
4349    }
4350
4351    @Override
4352    public void invalidateDrawable(Drawable drawable) {
4353        if (verifyDrawable(drawable)) {
4354            final Rect dirty = drawable.getBounds();
4355            int scrollX = mScrollX;
4356            int scrollY = mScrollY;
4357
4358            // IMPORTANT: The coordinates below are based on the coordinates computed
4359            // for each compound drawable in onDraw(). Make sure to update each section
4360            // accordingly.
4361            final TextView.Drawables drawables = mDrawables;
4362            if (drawables != null) {
4363                if (drawable == drawables.mDrawableLeft) {
4364                    final int compoundPaddingTop = getCompoundPaddingTop();
4365                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4366                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4367
4368                    scrollX += mPaddingLeft;
4369                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
4370                } else if (drawable == drawables.mDrawableRight) {
4371                    final int compoundPaddingTop = getCompoundPaddingTop();
4372                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4373                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4374
4375                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
4376                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
4377                } else if (drawable == drawables.mDrawableTop) {
4378                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4379                    final int compoundPaddingRight = getCompoundPaddingRight();
4380                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4381
4382                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
4383                    scrollY += mPaddingTop;
4384                } else if (drawable == drawables.mDrawableBottom) {
4385                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4386                    final int compoundPaddingRight = getCompoundPaddingRight();
4387                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4388
4389                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
4390                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
4391                }
4392            }
4393
4394            invalidate(dirty.left + scrollX, dirty.top + scrollY,
4395                    dirty.right + scrollX, dirty.bottom + scrollY);
4396        }
4397    }
4398
4399    @Override
4400    public int getResolvedLayoutDirection(Drawable who) {
4401        if (who == null) return View.LAYOUT_DIRECTION_LTR;
4402        if (mDrawables != null) {
4403            final Drawables drawables = mDrawables;
4404            if (who == drawables.mDrawableLeft || who == drawables.mDrawableRight ||
4405                who == drawables.mDrawableTop || who == drawables.mDrawableBottom ||
4406                who == drawables.mDrawableStart || who == drawables.mDrawableEnd) {
4407                return getResolvedLayoutDirection();
4408            }
4409        }
4410        return super.getResolvedLayoutDirection(who);
4411    }
4412
4413    @Override
4414    protected boolean onSetAlpha(int alpha) {
4415        // Alpha is supported if and only if the drawing can be done in one pass.
4416        // TODO text with spans with a background color currently do not respect this alpha.
4417        if (getBackground() == null) {
4418            if (mCurrentAlpha != alpha) {
4419                mCurrentAlpha = alpha;
4420                final Drawables dr = mDrawables;
4421                if (dr != null) {
4422                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.mutate().setAlpha(alpha);
4423                    if (dr.mDrawableTop != null) dr.mDrawableTop.mutate().setAlpha(alpha);
4424                    if (dr.mDrawableRight != null) dr.mDrawableRight.mutate().setAlpha(alpha);
4425                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.mutate().setAlpha(alpha);
4426                    if (dr.mDrawableStart != null) dr.mDrawableStart.mutate().setAlpha(alpha);
4427                    if (dr.mDrawableEnd != null) dr.mDrawableEnd.mutate().setAlpha(alpha);
4428                }
4429                if (mEditor != null) getEditor().invalidateTextDisplayList();
4430            }
4431            return true;
4432        }
4433
4434        if (mCurrentAlpha != 255) {
4435            if (mEditor != null) getEditor().invalidateTextDisplayList();
4436        }
4437        mCurrentAlpha = 255;
4438        return false;
4439    }
4440
4441    /**
4442     * When a TextView is used to display a useful piece of information to the user (such as a
4443     * contact's address), it should be made selectable, so that the user can select and copy this
4444     * content.
4445     *
4446     * Use {@link #setTextIsSelectable(boolean)} or the
4447     * {@link android.R.styleable#TextView_textIsSelectable} XML attribute to make this TextView
4448     * selectable (text is not selectable by default).
4449     *
4450     * Note that this method simply returns the state of this flag. Although this flag has to be set
4451     * in order to select text in non-editable TextView, the content of an {@link EditText} can
4452     * always be selected, independently of the value of this flag.
4453     *
4454     * @return True if the text displayed in this TextView can be selected by the user.
4455     *
4456     * @attr ref android.R.styleable#TextView_textIsSelectable
4457     */
4458    public boolean isTextSelectable() {
4459        return mEditor == null ? false : getEditor().mTextIsSelectable;
4460    }
4461
4462    /**
4463     * Sets whether or not (default) the content of this view is selectable by the user.
4464     *
4465     * Note that this methods affect the {@link #setFocusable(boolean)},
4466     * {@link #setFocusableInTouchMode(boolean)} {@link #setClickable(boolean)} and
4467     * {@link #setLongClickable(boolean)} states and you may want to restore these if they were
4468     * customized.
4469     *
4470     * See {@link #isTextSelectable} for details.
4471     *
4472     * @param selectable Whether or not the content of this TextView should be selectable.
4473     */
4474    public void setTextIsSelectable(boolean selectable) {
4475        if (!selectable && mEditor == null) return; // false is default value with no edit data
4476
4477        createEditorIfNeeded("setTextIsSelectable");
4478        if (getEditor().mTextIsSelectable == selectable) return;
4479
4480        getEditor().mTextIsSelectable = selectable;
4481        setFocusableInTouchMode(selectable);
4482        setFocusable(selectable);
4483        setClickable(selectable);
4484        setLongClickable(selectable);
4485
4486        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
4487
4488        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
4489        setText(getText(), selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
4490
4491        // Called by setText above, but safer in case of future code changes
4492        prepareCursorControllers();
4493    }
4494
4495    @Override
4496    protected int[] onCreateDrawableState(int extraSpace) {
4497        final int[] drawableState;
4498
4499        if (mSingleLine) {
4500            drawableState = super.onCreateDrawableState(extraSpace);
4501        } else {
4502            drawableState = super.onCreateDrawableState(extraSpace + 1);
4503            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
4504        }
4505
4506        if (isTextSelectable()) {
4507            // Disable pressed state, which was introduced when TextView was made clickable.
4508            // Prevents text color change.
4509            // setClickable(false) would have a similar effect, but it also disables focus changes
4510            // and long press actions, which are both needed by text selection.
4511            final int length = drawableState.length;
4512            for (int i = 0; i < length; i++) {
4513                if (drawableState[i] == R.attr.state_pressed) {
4514                    final int[] nonPressedState = new int[length - 1];
4515                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
4516                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
4517                    return nonPressedState;
4518                }
4519            }
4520        }
4521
4522        return drawableState;
4523    }
4524
4525    private Path getUpdatedHighlightPath() {
4526        Path highlight = null;
4527        Paint highlightPaint = mHighlightPaint;
4528
4529        final int selStart = getSelectionStart();
4530        final int selEnd = getSelectionEnd();
4531        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
4532            if (selStart == selEnd) {
4533                if (mEditor != null && isCursorVisible() &&
4534                        (SystemClock.uptimeMillis() - getEditor().mShowCursor) % (2 * BLINK) < BLINK) {
4535                    if (mHighlightPathBogus) {
4536                        if (mHighlightPath == null) mHighlightPath = new Path();
4537                        mHighlightPath.reset();
4538                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
4539                        getEditor().updateCursorsPositions();
4540                        mHighlightPathBogus = false;
4541                    }
4542
4543                    // XXX should pass to skin instead of drawing directly
4544                    highlightPaint.setColor(mCurTextColor);
4545                    if (mCurrentAlpha != 255) {
4546                        highlightPaint.setAlpha(
4547                                (mCurrentAlpha * Color.alpha(mCurTextColor)) / 255);
4548                    }
4549                    highlightPaint.setStyle(Paint.Style.STROKE);
4550                    highlight = mHighlightPath;
4551                }
4552            } else {
4553                if (mHighlightPathBogus) {
4554                    if (mHighlightPath == null) mHighlightPath = new Path();
4555                    mHighlightPath.reset();
4556                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4557                    mHighlightPathBogus = false;
4558                }
4559
4560                // XXX should pass to skin instead of drawing directly
4561                highlightPaint.setColor(mHighlightColor);
4562                if (mCurrentAlpha != 255) {
4563                    highlightPaint.setAlpha(
4564                            (mCurrentAlpha * Color.alpha(mHighlightColor)) / 255);
4565                }
4566                highlightPaint.setStyle(Paint.Style.FILL);
4567
4568                highlight = mHighlightPath;
4569            }
4570        }
4571        return highlight;
4572    }
4573
4574    @Override
4575    protected void onDraw(Canvas canvas) {
4576        if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return;
4577
4578        restartMarqueeIfNeeded();
4579
4580        // Draw the background for this view
4581        super.onDraw(canvas);
4582
4583        final int compoundPaddingLeft = getCompoundPaddingLeft();
4584        final int compoundPaddingTop = getCompoundPaddingTop();
4585        final int compoundPaddingRight = getCompoundPaddingRight();
4586        final int compoundPaddingBottom = getCompoundPaddingBottom();
4587        final int scrollX = mScrollX;
4588        final int scrollY = mScrollY;
4589        final int right = mRight;
4590        final int left = mLeft;
4591        final int bottom = mBottom;
4592        final int top = mTop;
4593
4594        final Drawables dr = mDrawables;
4595        if (dr != null) {
4596            /*
4597             * Compound, not extended, because the icon is not clipped
4598             * if the text height is smaller.
4599             */
4600
4601            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
4602            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
4603
4604            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4605            // Make sure to update invalidateDrawable() when changing this code.
4606            if (dr.mDrawableLeft != null) {
4607                canvas.save();
4608                canvas.translate(scrollX + mPaddingLeft,
4609                                 scrollY + compoundPaddingTop +
4610                                 (vspace - dr.mDrawableHeightLeft) / 2);
4611                dr.mDrawableLeft.draw(canvas);
4612                canvas.restore();
4613            }
4614
4615            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4616            // Make sure to update invalidateDrawable() when changing this code.
4617            if (dr.mDrawableRight != null) {
4618                canvas.save();
4619                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
4620                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
4621                dr.mDrawableRight.draw(canvas);
4622                canvas.restore();
4623            }
4624
4625            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4626            // Make sure to update invalidateDrawable() when changing this code.
4627            if (dr.mDrawableTop != null) {
4628                canvas.save();
4629                canvas.translate(scrollX + compoundPaddingLeft + (hspace - dr.mDrawableWidthTop) / 2,
4630                        scrollY + mPaddingTop);
4631                dr.mDrawableTop.draw(canvas);
4632                canvas.restore();
4633            }
4634
4635            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4636            // Make sure to update invalidateDrawable() when changing this code.
4637            if (dr.mDrawableBottom != null) {
4638                canvas.save();
4639                canvas.translate(scrollX + compoundPaddingLeft +
4640                        (hspace - dr.mDrawableWidthBottom) / 2,
4641                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
4642                dr.mDrawableBottom.draw(canvas);
4643                canvas.restore();
4644            }
4645        }
4646
4647        int color = mCurTextColor;
4648
4649        if (mLayout == null) {
4650            assumeLayout();
4651        }
4652
4653        Layout layout = mLayout;
4654
4655        if (mHint != null && mText.length() == 0) {
4656            if (mHintTextColor != null) {
4657                color = mCurHintTextColor;
4658            }
4659
4660            layout = mHintLayout;
4661        }
4662
4663        mTextPaint.setColor(color);
4664        if (mCurrentAlpha != 255) {
4665            // If set, the alpha will override the color's alpha. Multiply the alphas.
4666            mTextPaint.setAlpha((mCurrentAlpha * Color.alpha(color)) / 255);
4667        }
4668        mTextPaint.drawableState = getDrawableState();
4669
4670        canvas.save();
4671        /*  Would be faster if we didn't have to do this. Can we chop the
4672            (displayable) text so that we don't need to do this ever?
4673        */
4674
4675        int extendedPaddingTop = getExtendedPaddingTop();
4676        int extendedPaddingBottom = getExtendedPaddingBottom();
4677
4678        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4679        final int maxScrollY = mLayout.getHeight() - vspace;
4680
4681        float clipLeft = compoundPaddingLeft + scrollX;
4682        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
4683        float clipRight = right - left - compoundPaddingRight + scrollX;
4684        float clipBottom = bottom - top + scrollY -
4685                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
4686
4687        if (mShadowRadius != 0) {
4688            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
4689            clipRight += Math.max(0, mShadowDx + mShadowRadius);
4690
4691            clipTop += Math.min(0, mShadowDy - mShadowRadius);
4692            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
4693        }
4694
4695        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
4696
4697        int voffsetText = 0;
4698        int voffsetCursor = 0;
4699
4700        // translate in by our padding
4701        /* shortcircuit calling getVerticaOffset() */
4702        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4703            voffsetText = getVerticalOffset(false);
4704            voffsetCursor = getVerticalOffset(true);
4705        }
4706        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
4707
4708        final int layoutDirection = getResolvedLayoutDirection();
4709        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
4710        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
4711                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
4712            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
4713                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
4714                canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft -
4715                        getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f);
4716            }
4717
4718            if (mMarquee != null && mMarquee.isRunning()) {
4719                canvas.translate(-mMarquee.mScroll, 0.0f);
4720            }
4721        }
4722
4723        final int cursorOffsetVertical = voffsetCursor - voffsetText;
4724
4725        Path highlight = getUpdatedHighlightPath();
4726        if (mEditor != null) {
4727            getEditor().onDraw(canvas, layout, highlight, cursorOffsetVertical);
4728        } else {
4729            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4730
4731            if (mMarquee != null && mMarquee.shouldDrawGhost()) {
4732                canvas.translate((int) mMarquee.getGhostOffset(), 0.0f);
4733                layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4734            }
4735        }
4736
4737        canvas.restore();
4738    }
4739
4740    @Override
4741    public void getFocusedRect(Rect r) {
4742        if (mLayout == null) {
4743            super.getFocusedRect(r);
4744            return;
4745        }
4746
4747        int selEnd = getSelectionEnd();
4748        if (selEnd < 0) {
4749            super.getFocusedRect(r);
4750            return;
4751        }
4752
4753        int selStart = getSelectionStart();
4754        if (selStart < 0 || selStart >= selEnd) {
4755            int line = mLayout.getLineForOffset(selEnd);
4756            r.top = mLayout.getLineTop(line);
4757            r.bottom = mLayout.getLineBottom(line);
4758            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
4759            r.right = r.left + 4;
4760        } else {
4761            int lineStart = mLayout.getLineForOffset(selStart);
4762            int lineEnd = mLayout.getLineForOffset(selEnd);
4763            r.top = mLayout.getLineTop(lineStart);
4764            r.bottom = mLayout.getLineBottom(lineEnd);
4765            if (lineStart == lineEnd) {
4766                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
4767                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
4768            } else {
4769                // Selection extends across multiple lines -- make the focused
4770                // rect cover the entire width.
4771                if (mHighlightPathBogus) {
4772                    if (mHighlightPath == null) mHighlightPath = new Path();
4773                    mHighlightPath.reset();
4774                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4775                    mHighlightPathBogus = false;
4776                }
4777                synchronized (TEMP_RECTF) {
4778                    mHighlightPath.computeBounds(TEMP_RECTF, true);
4779                    r.left = (int)TEMP_RECTF.left-1;
4780                    r.right = (int)TEMP_RECTF.right+1;
4781                }
4782            }
4783        }
4784
4785        // Adjust for padding and gravity.
4786        int paddingLeft = getCompoundPaddingLeft();
4787        int paddingTop = getExtendedPaddingTop();
4788        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4789            paddingTop += getVerticalOffset(false);
4790        }
4791        r.offset(paddingLeft, paddingTop);
4792        int paddingBottom = getExtendedPaddingBottom();
4793        r.bottom += paddingBottom;
4794    }
4795
4796    /**
4797     * Return the number of lines of text, or 0 if the internal Layout has not
4798     * been built.
4799     */
4800    public int getLineCount() {
4801        return mLayout != null ? mLayout.getLineCount() : 0;
4802    }
4803
4804    /**
4805     * Return the baseline for the specified line (0...getLineCount() - 1)
4806     * If bounds is not null, return the top, left, right, bottom extents
4807     * of the specified line in it. If the internal Layout has not been built,
4808     * return 0 and set bounds to (0, 0, 0, 0)
4809     * @param line which line to examine (0..getLineCount() - 1)
4810     * @param bounds Optional. If not null, it returns the extent of the line
4811     * @return the Y-coordinate of the baseline
4812     */
4813    public int getLineBounds(int line, Rect bounds) {
4814        if (mLayout == null) {
4815            if (bounds != null) {
4816                bounds.set(0, 0, 0, 0);
4817            }
4818            return 0;
4819        }
4820        else {
4821            int baseline = mLayout.getLineBounds(line, bounds);
4822
4823            int voffset = getExtendedPaddingTop();
4824            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4825                voffset += getVerticalOffset(true);
4826            }
4827            if (bounds != null) {
4828                bounds.offset(getCompoundPaddingLeft(), voffset);
4829            }
4830            return baseline + voffset;
4831        }
4832    }
4833
4834    @Override
4835    public int getBaseline() {
4836        if (mLayout == null) {
4837            return super.getBaseline();
4838        }
4839
4840        int voffset = 0;
4841        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4842            voffset = getVerticalOffset(true);
4843        }
4844
4845        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
4846    }
4847
4848    /**
4849     * @hide
4850     * @param offsetRequired
4851     */
4852    @Override
4853    protected int getFadeTop(boolean offsetRequired) {
4854        if (mLayout == null) return 0;
4855
4856        int voffset = 0;
4857        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4858            voffset = getVerticalOffset(true);
4859        }
4860
4861        if (offsetRequired) voffset += getTopPaddingOffset();
4862
4863        return getExtendedPaddingTop() + voffset;
4864    }
4865
4866    /**
4867     * @hide
4868     * @param offsetRequired
4869     */
4870    @Override
4871    protected int getFadeHeight(boolean offsetRequired) {
4872        return mLayout != null ? mLayout.getHeight() : 0;
4873    }
4874
4875    @Override
4876    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
4877        if (keyCode == KeyEvent.KEYCODE_BACK) {
4878            boolean isInSelectionMode = mEditor != null && getEditor().mSelectionActionMode != null;
4879
4880            if (isInSelectionMode) {
4881                if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
4882                    KeyEvent.DispatcherState state = getKeyDispatcherState();
4883                    if (state != null) {
4884                        state.startTracking(event, this);
4885                    }
4886                    return true;
4887                } else if (event.getAction() == KeyEvent.ACTION_UP) {
4888                    KeyEvent.DispatcherState state = getKeyDispatcherState();
4889                    if (state != null) {
4890                        state.handleUpEvent(event);
4891                    }
4892                    if (event.isTracking() && !event.isCanceled()) {
4893                        stopSelectionActionMode();
4894                        return true;
4895                    }
4896                }
4897            }
4898        }
4899        return super.onKeyPreIme(keyCode, event);
4900    }
4901
4902    @Override
4903    public boolean onKeyDown(int keyCode, KeyEvent event) {
4904        int which = doKeyDown(keyCode, event, null);
4905        if (which == 0) {
4906            // Go through default dispatching.
4907            return super.onKeyDown(keyCode, event);
4908        }
4909
4910        return true;
4911    }
4912
4913    @Override
4914    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
4915        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
4916
4917        int which = doKeyDown(keyCode, down, event);
4918        if (which == 0) {
4919            // Go through default dispatching.
4920            return super.onKeyMultiple(keyCode, repeatCount, event);
4921        }
4922        if (which == -1) {
4923            // Consumed the whole thing.
4924            return true;
4925        }
4926
4927        repeatCount--;
4928
4929        // We are going to dispatch the remaining events to either the input
4930        // or movement method.  To do this, we will just send a repeated stream
4931        // of down and up events until we have done the complete repeatCount.
4932        // It would be nice if those interfaces had an onKeyMultiple() method,
4933        // but adding that is a more complicated change.
4934        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
4935        if (which == 1) {
4936            // mEditor and getEditor().mInput are not null from doKeyDown
4937            getEditor().mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
4938            while (--repeatCount > 0) {
4939                getEditor().mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
4940                getEditor().mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
4941            }
4942            hideErrorIfUnchanged();
4943
4944        } else if (which == 2) {
4945            // mMovement is not null from doKeyDown
4946            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4947            while (--repeatCount > 0) {
4948                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
4949                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4950            }
4951        }
4952
4953        return true;
4954    }
4955
4956    /**
4957     * Returns true if pressing ENTER in this field advances focus instead
4958     * of inserting the character.  This is true mostly in single-line fields,
4959     * but also in mail addresses and subjects which will display on multiple
4960     * lines but where it doesn't make sense to insert newlines.
4961     */
4962    private boolean shouldAdvanceFocusOnEnter() {
4963        if (getKeyListener() == null) {
4964            return false;
4965        }
4966
4967        if (mSingleLine) {
4968            return true;
4969        }
4970
4971        if (mEditor != null && (getEditor().mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
4972            int variation = getEditor().mInputType & EditorInfo.TYPE_MASK_VARIATION;
4973            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
4974                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
4975                return true;
4976            }
4977        }
4978
4979        return false;
4980    }
4981
4982    /**
4983     * Returns true if pressing TAB in this field advances focus instead
4984     * of inserting the character.  Insert tabs only in multi-line editors.
4985     */
4986    private boolean shouldAdvanceFocusOnTab() {
4987        if (getKeyListener() != null && !mSingleLine) {
4988            if (mEditor != null && (getEditor().mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
4989                int variation = getEditor().mInputType & EditorInfo.TYPE_MASK_VARIATION;
4990                if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
4991                        || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
4992                    return false;
4993                }
4994            }
4995        }
4996        return true;
4997    }
4998
4999    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
5000        if (!isEnabled()) {
5001            return 0;
5002        }
5003
5004        switch (keyCode) {
5005            case KeyEvent.KEYCODE_ENTER:
5006                if (event.hasNoModifiers()) {
5007                    // When mInputContentType is set, we know that we are
5008                    // running in a "modern" cupcake environment, so don't need
5009                    // to worry about the application trying to capture
5010                    // enter key events.
5011                    if (mEditor != null && getEditor().mInputContentType != null) {
5012                        // If there is an action listener, given them a
5013                        // chance to consume the event.
5014                        if (getEditor().mInputContentType.onEditorActionListener != null &&
5015                                getEditor().mInputContentType.onEditorActionListener.onEditorAction(
5016                                this, EditorInfo.IME_NULL, event)) {
5017                            getEditor().mInputContentType.enterDown = true;
5018                            // We are consuming the enter key for them.
5019                            return -1;
5020                        }
5021                    }
5022
5023                    // If our editor should move focus when enter is pressed, or
5024                    // this is a generated event from an IME action button, then
5025                    // don't let it be inserted into the text.
5026                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5027                            || shouldAdvanceFocusOnEnter()) {
5028                        if (hasOnClickListeners()) {
5029                            return 0;
5030                        }
5031                        return -1;
5032                    }
5033                }
5034                break;
5035
5036            case KeyEvent.KEYCODE_DPAD_CENTER:
5037                if (event.hasNoModifiers()) {
5038                    if (shouldAdvanceFocusOnEnter()) {
5039                        return 0;
5040                    }
5041                }
5042                break;
5043
5044            case KeyEvent.KEYCODE_TAB:
5045                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
5046                    if (shouldAdvanceFocusOnTab()) {
5047                        return 0;
5048                    }
5049                }
5050                break;
5051
5052                // Has to be done on key down (and not on key up) to correctly be intercepted.
5053            case KeyEvent.KEYCODE_BACK:
5054                if (mEditor != null && getEditor().mSelectionActionMode != null) {
5055                    stopSelectionActionMode();
5056                    return -1;
5057                }
5058                break;
5059        }
5060
5061        if (mEditor != null && getEditor().mKeyListener != null) {
5062            resetErrorChangedFlag();
5063
5064            boolean doDown = true;
5065            if (otherEvent != null) {
5066                try {
5067                    beginBatchEdit();
5068                    final boolean handled = getEditor().mKeyListener.onKeyOther(this, (Editable) mText, otherEvent);
5069                    hideErrorIfUnchanged();
5070                    doDown = false;
5071                    if (handled) {
5072                        return -1;
5073                    }
5074                } catch (AbstractMethodError e) {
5075                    // onKeyOther was added after 1.0, so if it isn't
5076                    // implemented we need to try to dispatch as a regular down.
5077                } finally {
5078                    endBatchEdit();
5079                }
5080            }
5081
5082            if (doDown) {
5083                beginBatchEdit();
5084                final boolean handled = getEditor().mKeyListener.onKeyDown(this, (Editable) mText, keyCode, event);
5085                endBatchEdit();
5086                hideErrorIfUnchanged();
5087                if (handled) return 1;
5088            }
5089        }
5090
5091        // bug 650865: sometimes we get a key event before a layout.
5092        // don't try to move around if we don't know the layout.
5093
5094        if (mMovement != null && mLayout != null) {
5095            boolean doDown = true;
5096            if (otherEvent != null) {
5097                try {
5098                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
5099                            otherEvent);
5100                    doDown = false;
5101                    if (handled) {
5102                        return -1;
5103                    }
5104                } catch (AbstractMethodError e) {
5105                    // onKeyOther was added after 1.0, so if it isn't
5106                    // implemented we need to try to dispatch as a regular down.
5107                }
5108            }
5109            if (doDown) {
5110                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
5111                    return 2;
5112            }
5113        }
5114
5115        return 0;
5116    }
5117
5118    /**
5119     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
5120     * can be recorded.
5121     * @hide
5122     */
5123    public void resetErrorChangedFlag() {
5124        /*
5125         * Keep track of what the error was before doing the input
5126         * so that if an input filter changed the error, we leave
5127         * that error showing.  Otherwise, we take down whatever
5128         * error was showing when the user types something.
5129         */
5130        if (mEditor != null) getEditor().mErrorWasChanged = false;
5131    }
5132
5133    /**
5134     * @hide
5135     */
5136    public void hideErrorIfUnchanged() {
5137        if (mEditor != null && getEditor().mError != null && !getEditor().mErrorWasChanged) {
5138            setError(null, null);
5139        }
5140    }
5141
5142    @Override
5143    public boolean onKeyUp(int keyCode, KeyEvent event) {
5144        if (!isEnabled()) {
5145            return super.onKeyUp(keyCode, event);
5146        }
5147
5148        switch (keyCode) {
5149            case KeyEvent.KEYCODE_DPAD_CENTER:
5150                if (event.hasNoModifiers()) {
5151                    /*
5152                     * If there is a click listener, just call through to
5153                     * super, which will invoke it.
5154                     *
5155                     * If there isn't a click listener, try to show the soft
5156                     * input method.  (It will also
5157                     * call performClick(), but that won't do anything in
5158                     * this case.)
5159                     */
5160                    if (!hasOnClickListeners()) {
5161                        if (mMovement != null && mText instanceof Editable
5162                                && mLayout != null && onCheckIsTextEditor()) {
5163                            InputMethodManager imm = InputMethodManager.peekInstance();
5164                            viewClicked(imm);
5165                            if (imm != null) {
5166                                imm.showSoftInput(this, 0);
5167                            }
5168                        }
5169                    }
5170                }
5171                return super.onKeyUp(keyCode, event);
5172
5173            case KeyEvent.KEYCODE_ENTER:
5174                if (event.hasNoModifiers()) {
5175                    if (mEditor != null && getEditor().mInputContentType != null
5176                            && getEditor().mInputContentType.onEditorActionListener != null
5177                            && getEditor().mInputContentType.enterDown) {
5178                        getEditor().mInputContentType.enterDown = false;
5179                        if (getEditor().mInputContentType.onEditorActionListener.onEditorAction(
5180                                this, EditorInfo.IME_NULL, event)) {
5181                            return true;
5182                        }
5183                    }
5184
5185                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5186                            || shouldAdvanceFocusOnEnter()) {
5187                        /*
5188                         * If there is a click listener, just call through to
5189                         * super, which will invoke it.
5190                         *
5191                         * If there isn't a click listener, try to advance focus,
5192                         * but still call through to super, which will reset the
5193                         * pressed state and longpress state.  (It will also
5194                         * call performClick(), but that won't do anything in
5195                         * this case.)
5196                         */
5197                        if (!hasOnClickListeners()) {
5198                            View v = focusSearch(FOCUS_DOWN);
5199
5200                            if (v != null) {
5201                                if (!v.requestFocus(FOCUS_DOWN)) {
5202                                    throw new IllegalStateException(
5203                                            "focus search returned a view " +
5204                                            "that wasn't able to take focus!");
5205                                }
5206
5207                                /*
5208                                 * Return true because we handled the key; super
5209                                 * will return false because there was no click
5210                                 * listener.
5211                                 */
5212                                super.onKeyUp(keyCode, event);
5213                                return true;
5214                            } else if ((event.getFlags()
5215                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
5216                                // No target for next focus, but make sure the IME
5217                                // if this came from it.
5218                                InputMethodManager imm = InputMethodManager.peekInstance();
5219                                if (imm != null && imm.isActive(this)) {
5220                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
5221                                }
5222                            }
5223                        }
5224                    }
5225                    return super.onKeyUp(keyCode, event);
5226                }
5227                break;
5228        }
5229
5230        if (mEditor != null && getEditor().mKeyListener != null)
5231            if (getEditor().mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
5232                return true;
5233
5234        if (mMovement != null && mLayout != null)
5235            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
5236                return true;
5237
5238        return super.onKeyUp(keyCode, event);
5239    }
5240
5241    @Override
5242    public boolean onCheckIsTextEditor() {
5243        return mEditor != null && getEditor().mInputType != EditorInfo.TYPE_NULL;
5244    }
5245
5246    @Override
5247    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
5248        createEditorIfNeeded("onCreateInputConnection");
5249        if (onCheckIsTextEditor() && isEnabled()) {
5250            if (getEditor().mInputMethodState == null) {
5251                getEditor().mInputMethodState = new InputMethodState();
5252            }
5253            outAttrs.inputType = getInputType();
5254            if (getEditor().mInputContentType != null) {
5255                outAttrs.imeOptions = getEditor().mInputContentType.imeOptions;
5256                outAttrs.privateImeOptions = getEditor().mInputContentType.privateImeOptions;
5257                outAttrs.actionLabel = getEditor().mInputContentType.imeActionLabel;
5258                outAttrs.actionId = getEditor().mInputContentType.imeActionId;
5259                outAttrs.extras = getEditor().mInputContentType.extras;
5260            } else {
5261                outAttrs.imeOptions = EditorInfo.IME_NULL;
5262            }
5263            if (focusSearch(FOCUS_DOWN) != null) {
5264                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
5265            }
5266            if (focusSearch(FOCUS_UP) != null) {
5267                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
5268            }
5269            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
5270                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
5271                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
5272                    // An action has not been set, but the enter key will move to
5273                    // the next focus, so set the action to that.
5274                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
5275                } else {
5276                    // An action has not been set, and there is no focus to move
5277                    // to, so let's just supply a "done" action.
5278                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
5279                }
5280                if (!shouldAdvanceFocusOnEnter()) {
5281                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5282                }
5283            }
5284            if (isMultilineInputType(outAttrs.inputType)) {
5285                // Multi-line text editors should always show an enter key.
5286                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5287            }
5288            outAttrs.hintText = mHint;
5289            if (mText instanceof Editable) {
5290                InputConnection ic = new EditableInputConnection(this);
5291                outAttrs.initialSelStart = getSelectionStart();
5292                outAttrs.initialSelEnd = getSelectionEnd();
5293                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
5294                return ic;
5295            }
5296        }
5297        return null;
5298    }
5299
5300    /**
5301     * If this TextView contains editable content, extract a portion of it
5302     * based on the information in <var>request</var> in to <var>outText</var>.
5303     * @return Returns true if the text was successfully extracted, else false.
5304     */
5305    public boolean extractText(ExtractedTextRequest request,
5306            ExtractedText outText) {
5307        return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN,
5308                EXTRACT_UNKNOWN, outText);
5309    }
5310
5311    static final int EXTRACT_NOTHING = -2;
5312    static final int EXTRACT_UNKNOWN = -1;
5313
5314    boolean extractTextInternal(ExtractedTextRequest request,
5315            int partialStartOffset, int partialEndOffset, int delta,
5316            ExtractedText outText) {
5317        final CharSequence content = mText;
5318        if (content != null) {
5319            if (partialStartOffset != EXTRACT_NOTHING) {
5320                final int N = content.length();
5321                if (partialStartOffset < 0) {
5322                    outText.partialStartOffset = outText.partialEndOffset = -1;
5323                    partialStartOffset = 0;
5324                    partialEndOffset = N;
5325                } else {
5326                    // Now use the delta to determine the actual amount of text
5327                    // we need.
5328                    partialEndOffset += delta;
5329                    // Adjust offsets to ensure we contain full spans.
5330                    if (content instanceof Spanned) {
5331                        Spanned spanned = (Spanned)content;
5332                        Object[] spans = spanned.getSpans(partialStartOffset,
5333                                partialEndOffset, ParcelableSpan.class);
5334                        int i = spans.length;
5335                        while (i > 0) {
5336                            i--;
5337                            int j = spanned.getSpanStart(spans[i]);
5338                            if (j < partialStartOffset) partialStartOffset = j;
5339                            j = spanned.getSpanEnd(spans[i]);
5340                            if (j > partialEndOffset) partialEndOffset = j;
5341                        }
5342                    }
5343                    outText.partialStartOffset = partialStartOffset;
5344                    outText.partialEndOffset = partialEndOffset - delta;
5345
5346                    if (partialStartOffset > N) {
5347                        partialStartOffset = N;
5348                    } else if (partialStartOffset < 0) {
5349                        partialStartOffset = 0;
5350                    }
5351                    if (partialEndOffset > N) {
5352                        partialEndOffset = N;
5353                    } else if (partialEndOffset < 0) {
5354                        partialEndOffset = 0;
5355                    }
5356                }
5357                if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) {
5358                    outText.text = content.subSequence(partialStartOffset,
5359                            partialEndOffset);
5360                } else {
5361                    outText.text = TextUtils.substring(content, partialStartOffset,
5362                            partialEndOffset);
5363                }
5364            } else {
5365                outText.partialStartOffset = 0;
5366                outText.partialEndOffset = 0;
5367                outText.text = "";
5368            }
5369            outText.flags = 0;
5370            if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) {
5371                outText.flags |= ExtractedText.FLAG_SELECTING;
5372            }
5373            if (mSingleLine) {
5374                outText.flags |= ExtractedText.FLAG_SINGLE_LINE;
5375            }
5376            outText.startOffset = 0;
5377            outText.selectionStart = getSelectionStart();
5378            outText.selectionEnd = getSelectionEnd();
5379            return true;
5380        }
5381        return false;
5382    }
5383
5384    boolean reportExtractedText() {
5385        final InputMethodState ims = getEditor().mInputMethodState;
5386        if (ims != null) {
5387            final boolean contentChanged = ims.mContentChanged;
5388            if (contentChanged || ims.mSelectionModeChanged) {
5389                ims.mContentChanged = false;
5390                ims.mSelectionModeChanged = false;
5391                final ExtractedTextRequest req = ims.mExtracting;
5392                if (req != null) {
5393                    InputMethodManager imm = InputMethodManager.peekInstance();
5394                    if (imm != null) {
5395                        if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Retrieving extracted start="
5396                                + ims.mChangedStart + " end=" + ims.mChangedEnd
5397                                + " delta=" + ims.mChangedDelta);
5398                        if (ims.mChangedStart < 0 && !contentChanged) {
5399                            ims.mChangedStart = EXTRACT_NOTHING;
5400                        }
5401                        if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd,
5402                                ims.mChangedDelta, ims.mTmpExtracted)) {
5403                            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Reporting extracted start="
5404                                    + ims.mTmpExtracted.partialStartOffset
5405                                    + " end=" + ims.mTmpExtracted.partialEndOffset
5406                                    + ": " + ims.mTmpExtracted.text);
5407                            imm.updateExtractedText(this, req.token, ims.mTmpExtracted);
5408                            ims.mChangedStart = EXTRACT_UNKNOWN;
5409                            ims.mChangedEnd = EXTRACT_UNKNOWN;
5410                            ims.mChangedDelta = 0;
5411                            ims.mContentChanged = false;
5412                            return true;
5413                        }
5414                    }
5415                }
5416            }
5417        }
5418        return false;
5419    }
5420
5421    /**
5422     * This is used to remove all style-impacting spans from text before new
5423     * extracted text is being replaced into it, so that we don't have any
5424     * lingering spans applied during the replace.
5425     */
5426    static void removeParcelableSpans(Spannable spannable, int start, int end) {
5427        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
5428        int i = spans.length;
5429        while (i > 0) {
5430            i--;
5431            spannable.removeSpan(spans[i]);
5432        }
5433    }
5434
5435    /**
5436     * Apply to this text view the given extracted text, as previously
5437     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
5438     */
5439    public void setExtractedText(ExtractedText text) {
5440        Editable content = getEditableText();
5441        if (text.text != null) {
5442            if (content == null) {
5443                setText(text.text, TextView.BufferType.EDITABLE);
5444            } else if (text.partialStartOffset < 0) {
5445                removeParcelableSpans(content, 0, content.length());
5446                content.replace(0, content.length(), text.text);
5447            } else {
5448                final int N = content.length();
5449                int start = text.partialStartOffset;
5450                if (start > N) start = N;
5451                int end = text.partialEndOffset;
5452                if (end > N) end = N;
5453                removeParcelableSpans(content, start, end);
5454                content.replace(start, end, text.text);
5455            }
5456        }
5457
5458        // Now set the selection position...  make sure it is in range, to
5459        // avoid crashes.  If this is a partial update, it is possible that
5460        // the underlying text may have changed, causing us problems here.
5461        // Also we just don't want to trust clients to do the right thing.
5462        Spannable sp = (Spannable)getText();
5463        final int N = sp.length();
5464        int start = text.selectionStart;
5465        if (start < 0) start = 0;
5466        else if (start > N) start = N;
5467        int end = text.selectionEnd;
5468        if (end < 0) end = 0;
5469        else if (end > N) end = N;
5470        Selection.setSelection(sp, start, end);
5471
5472        // Finally, update the selection mode.
5473        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
5474            MetaKeyKeyListener.startSelecting(this, sp);
5475        } else {
5476            MetaKeyKeyListener.stopSelecting(this, sp);
5477        }
5478    }
5479
5480    /**
5481     * @hide
5482     */
5483    public void setExtracting(ExtractedTextRequest req) {
5484        if (getEditor().mInputMethodState != null) {
5485            getEditor().mInputMethodState.mExtracting = req;
5486        }
5487        // This would stop a possible selection mode, but no such mode is started in case
5488        // extracted mode will start. Some text is selected though, and will trigger an action mode
5489        // in the extracted view.
5490        hideControllers();
5491    }
5492
5493    /**
5494     * Called by the framework in response to a text completion from
5495     * the current input method, provided by it calling
5496     * {@link InputConnection#commitCompletion
5497     * InputConnection.commitCompletion()}.  The default implementation does
5498     * nothing; text views that are supporting auto-completion should override
5499     * this to do their desired behavior.
5500     *
5501     * @param text The auto complete text the user has selected.
5502     */
5503    public void onCommitCompletion(CompletionInfo text) {
5504        // intentionally empty
5505    }
5506
5507    /**
5508     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
5509     * a dictionnary) from the current input method, provided by it calling
5510     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
5511     * implementation flashes the background of the corrected word to provide feedback to the user.
5512     *
5513     * @param info The auto correct info about the text that was corrected.
5514     */
5515    public void onCommitCorrection(CorrectionInfo info) {
5516        if (mEditor == null) return;
5517        if (getEditor().mCorrectionHighlighter == null) {
5518            getEditor().mCorrectionHighlighter = new CorrectionHighlighter();
5519        } else {
5520            getEditor().mCorrectionHighlighter.invalidate(false);
5521        }
5522
5523        getEditor().mCorrectionHighlighter.highlight(info);
5524    }
5525
5526    public void beginBatchEdit() {
5527        if (mEditor == null) return;
5528        getEditor().mInBatchEditControllers = true;
5529        final InputMethodState ims = getEditor().mInputMethodState;
5530        if (ims != null) {
5531            int nesting = ++ims.mBatchEditNesting;
5532            if (nesting == 1) {
5533                ims.mCursorChanged = false;
5534                ims.mChangedDelta = 0;
5535                if (ims.mContentChanged) {
5536                    // We already have a pending change from somewhere else,
5537                    // so turn this into a full update.
5538                    ims.mChangedStart = 0;
5539                    ims.mChangedEnd = mText.length();
5540                } else {
5541                    ims.mChangedStart = EXTRACT_UNKNOWN;
5542                    ims.mChangedEnd = EXTRACT_UNKNOWN;
5543                    ims.mContentChanged = false;
5544                }
5545                onBeginBatchEdit();
5546            }
5547        }
5548    }
5549
5550    public void endBatchEdit() {
5551        if (mEditor == null) return;
5552        getEditor().mInBatchEditControllers = false;
5553        final InputMethodState ims = getEditor().mInputMethodState;
5554        if (ims != null) {
5555            int nesting = --ims.mBatchEditNesting;
5556            if (nesting == 0) {
5557                finishBatchEdit(ims);
5558            }
5559        }
5560    }
5561
5562    void ensureEndedBatchEdit() {
5563        final InputMethodState ims = getEditor().mInputMethodState;
5564        if (ims != null && ims.mBatchEditNesting != 0) {
5565            ims.mBatchEditNesting = 0;
5566            finishBatchEdit(ims);
5567        }
5568    }
5569
5570    void finishBatchEdit(final InputMethodState ims) {
5571        onEndBatchEdit();
5572
5573        if (ims.mContentChanged || ims.mSelectionModeChanged) {
5574            updateAfterEdit();
5575            reportExtractedText();
5576        } else if (ims.mCursorChanged) {
5577            // Cheezy way to get us to report the current cursor location.
5578            invalidateCursor();
5579        }
5580    }
5581
5582    void updateAfterEdit() {
5583        invalidate();
5584        int curs = getSelectionStart();
5585
5586        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5587            registerForPreDraw();
5588        }
5589
5590        if (curs >= 0) {
5591            mHighlightPathBogus = true;
5592            makeBlink();
5593            bringPointIntoView(curs);
5594        }
5595
5596        checkForResize();
5597    }
5598
5599    /**
5600     * Called by the framework in response to a request to begin a batch
5601     * of edit operations through a call to link {@link #beginBatchEdit()}.
5602     */
5603    public void onBeginBatchEdit() {
5604        // intentionally empty
5605    }
5606
5607    /**
5608     * Called by the framework in response to a request to end a batch
5609     * of edit operations through a call to link {@link #endBatchEdit}.
5610     */
5611    public void onEndBatchEdit() {
5612        // intentionally empty
5613    }
5614
5615    /**
5616     * Called by the framework in response to a private command from the
5617     * current method, provided by it calling
5618     * {@link InputConnection#performPrivateCommand
5619     * InputConnection.performPrivateCommand()}.
5620     *
5621     * @param action The action name of the command.
5622     * @param data Any additional data for the command.  This may be null.
5623     * @return Return true if you handled the command, else false.
5624     */
5625    public boolean onPrivateIMECommand(String action, Bundle data) {
5626        return false;
5627    }
5628
5629    private void nullLayouts() {
5630        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
5631            mSavedLayout = (BoringLayout) mLayout;
5632        }
5633        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
5634            mSavedHintLayout = (BoringLayout) mHintLayout;
5635        }
5636
5637        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
5638
5639        mBoring = mHintBoring = null;
5640
5641        // Since it depends on the value of mLayout
5642        prepareCursorControllers();
5643    }
5644
5645    /**
5646     * Make a new Layout based on the already-measured size of the view,
5647     * on the assumption that it was measured correctly at some point.
5648     */
5649    private void assumeLayout() {
5650        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5651
5652        if (width < 1) {
5653            width = 0;
5654        }
5655
5656        int physicalWidth = width;
5657
5658        if (mHorizontallyScrolling) {
5659            width = VERY_WIDE;
5660        }
5661
5662        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
5663                      physicalWidth, false);
5664    }
5665
5666    private Layout.Alignment getLayoutAlignment() {
5667        if (mLayoutAlignment == null) {
5668            switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
5669                case Gravity.START:
5670                    mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5671                    break;
5672                case Gravity.END:
5673                    mLayoutAlignment = Layout.Alignment.ALIGN_OPPOSITE;
5674                    break;
5675                case Gravity.LEFT:
5676                    mLayoutAlignment = Layout.Alignment.ALIGN_LEFT;
5677                    break;
5678                case Gravity.RIGHT:
5679                    mLayoutAlignment = Layout.Alignment.ALIGN_RIGHT;
5680                    break;
5681                case Gravity.CENTER_HORIZONTAL:
5682                    mLayoutAlignment = Layout.Alignment.ALIGN_CENTER;
5683                    break;
5684                default:
5685                    mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5686                    break;
5687            }
5688        }
5689        return mLayoutAlignment;
5690    }
5691
5692    /**
5693     * The width passed in is now the desired layout width,
5694     * not the full view width with padding.
5695     * {@hide}
5696     */
5697    protected void makeNewLayout(int wantWidth, int hintWidth,
5698                                 BoringLayout.Metrics boring,
5699                                 BoringLayout.Metrics hintBoring,
5700                                 int ellipsisWidth, boolean bringIntoView) {
5701        stopMarquee();
5702
5703        // Update "old" cached values
5704        mOldMaximum = mMaximum;
5705        mOldMaxMode = mMaxMode;
5706
5707        mHighlightPathBogus = true;
5708
5709        if (wantWidth < 0) {
5710            wantWidth = 0;
5711        }
5712        if (hintWidth < 0) {
5713            hintWidth = 0;
5714        }
5715
5716        Layout.Alignment alignment = getLayoutAlignment();
5717        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
5718        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
5719                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
5720        TruncateAt effectiveEllipsize = mEllipsize;
5721        if (mEllipsize == TruncateAt.MARQUEE &&
5722                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5723            effectiveEllipsize = TruncateAt.END_SMALL;
5724        }
5725
5726        if (mTextDir == null) {
5727            resolveTextDirection();
5728        }
5729
5730        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
5731                effectiveEllipsize, effectiveEllipsize == mEllipsize);
5732        if (switchEllipsize) {
5733            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
5734                    TruncateAt.END : TruncateAt.MARQUEE;
5735            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
5736                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
5737        }
5738
5739        shouldEllipsize = mEllipsize != null;
5740        mHintLayout = null;
5741
5742        if (mHint != null) {
5743            if (shouldEllipsize) hintWidth = wantWidth;
5744
5745            if (hintBoring == UNKNOWN_BORING) {
5746                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
5747                                                   mHintBoring);
5748                if (hintBoring != null) {
5749                    mHintBoring = hintBoring;
5750                }
5751            }
5752
5753            if (hintBoring != null) {
5754                if (hintBoring.width <= hintWidth &&
5755                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
5756                    if (mSavedHintLayout != null) {
5757                        mHintLayout = mSavedHintLayout.
5758                                replaceOrMake(mHint, mTextPaint,
5759                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5760                                hintBoring, mIncludePad);
5761                    } else {
5762                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5763                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5764                                hintBoring, mIncludePad);
5765                    }
5766
5767                    mSavedHintLayout = (BoringLayout) mHintLayout;
5768                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
5769                    if (mSavedHintLayout != null) {
5770                        mHintLayout = mSavedHintLayout.
5771                                replaceOrMake(mHint, mTextPaint,
5772                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5773                                hintBoring, mIncludePad, mEllipsize,
5774                                ellipsisWidth);
5775                    } else {
5776                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5777                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5778                                hintBoring, mIncludePad, mEllipsize,
5779                                ellipsisWidth);
5780                    }
5781                } else if (shouldEllipsize) {
5782                    mHintLayout = new StaticLayout(mHint,
5783                                0, mHint.length(),
5784                                mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5785                                mSpacingAdd, mIncludePad, mEllipsize,
5786                                ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5787                } else {
5788                    mHintLayout = new StaticLayout(mHint, mTextPaint,
5789                            hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5790                            mIncludePad);
5791                }
5792            } else if (shouldEllipsize) {
5793                mHintLayout = new StaticLayout(mHint,
5794                            0, mHint.length(),
5795                            mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5796                            mSpacingAdd, mIncludePad, mEllipsize,
5797                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5798            } else {
5799                mHintLayout = new StaticLayout(mHint, mTextPaint,
5800                        hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5801                        mIncludePad);
5802            }
5803        }
5804
5805        if (bringIntoView) {
5806            registerForPreDraw();
5807        }
5808
5809        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5810            if (!compressText(ellipsisWidth)) {
5811                final int height = mLayoutParams.height;
5812                // If the size of the view does not depend on the size of the text, try to
5813                // start the marquee immediately
5814                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
5815                    startMarquee();
5816                } else {
5817                    // Defer the start of the marquee until we know our width (see setFrame())
5818                    mRestartMarquee = true;
5819                }
5820            }
5821        }
5822
5823        // CursorControllers need a non-null mLayout
5824        prepareCursorControllers();
5825    }
5826
5827    private Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
5828            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
5829            boolean useSaved) {
5830        Layout result = null;
5831        if (mText instanceof Spannable) {
5832            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
5833                    alignment, mTextDir, mSpacingMult,
5834                    mSpacingAdd, mIncludePad, getKeyListener() == null ? effectiveEllipsize : null,
5835                            ellipsisWidth);
5836        } else {
5837            if (boring == UNKNOWN_BORING) {
5838                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
5839                if (boring != null) {
5840                    mBoring = boring;
5841                }
5842            }
5843
5844            if (boring != null) {
5845                if (boring.width <= wantWidth &&
5846                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
5847                    if (useSaved && mSavedLayout != null) {
5848                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
5849                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5850                                boring, mIncludePad);
5851                    } else {
5852                        result = BoringLayout.make(mTransformed, mTextPaint,
5853                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5854                                boring, mIncludePad);
5855                    }
5856
5857                    if (useSaved) {
5858                        mSavedLayout = (BoringLayout) result;
5859                    }
5860                } else if (shouldEllipsize && boring.width <= wantWidth) {
5861                    if (useSaved && mSavedLayout != null) {
5862                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
5863                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5864                                boring, mIncludePad, effectiveEllipsize,
5865                                ellipsisWidth);
5866                    } else {
5867                        result = BoringLayout.make(mTransformed, mTextPaint,
5868                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5869                                boring, mIncludePad, effectiveEllipsize,
5870                                ellipsisWidth);
5871                    }
5872                } else if (shouldEllipsize) {
5873                    result = new StaticLayout(mTransformed,
5874                            0, mTransformed.length(),
5875                            mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
5876                            mSpacingAdd, mIncludePad, effectiveEllipsize,
5877                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5878                } else {
5879                    result = new StaticLayout(mTransformed, mTextPaint,
5880                            wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5881                            mIncludePad);
5882                }
5883            } else if (shouldEllipsize) {
5884                result = new StaticLayout(mTransformed,
5885                        0, mTransformed.length(),
5886                        mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
5887                        mSpacingAdd, mIncludePad, effectiveEllipsize,
5888                        ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5889            } else {
5890                result = new StaticLayout(mTransformed, mTextPaint,
5891                        wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5892                        mIncludePad);
5893            }
5894        }
5895        return result;
5896    }
5897
5898    private boolean compressText(float width) {
5899        if (isHardwareAccelerated()) return false;
5900
5901        // Only compress the text if it hasn't been compressed by the previous pass
5902        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
5903                mTextPaint.getTextScaleX() == 1.0f) {
5904            final float textWidth = mLayout.getLineWidth(0);
5905            final float overflow = (textWidth + 1.0f - width) / width;
5906            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
5907                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
5908                post(new Runnable() {
5909                    public void run() {
5910                        requestLayout();
5911                    }
5912                });
5913                return true;
5914            }
5915        }
5916
5917        return false;
5918    }
5919
5920    private static int desired(Layout layout) {
5921        int n = layout.getLineCount();
5922        CharSequence text = layout.getText();
5923        float max = 0;
5924
5925        // if any line was wrapped, we can't use it.
5926        // but it's ok for the last line not to have a newline
5927
5928        for (int i = 0; i < n - 1; i++) {
5929            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
5930                return -1;
5931        }
5932
5933        for (int i = 0; i < n; i++) {
5934            max = Math.max(max, layout.getLineWidth(i));
5935        }
5936
5937        return (int) FloatMath.ceil(max);
5938    }
5939
5940    /**
5941     * Set whether the TextView includes extra top and bottom padding to make
5942     * room for accents that go above the normal ascent and descent.
5943     * The default is true.
5944     *
5945     * @attr ref android.R.styleable#TextView_includeFontPadding
5946     */
5947    public void setIncludeFontPadding(boolean includepad) {
5948        if (mIncludePad != includepad) {
5949            mIncludePad = includepad;
5950
5951            if (mLayout != null) {
5952                nullLayouts();
5953                requestLayout();
5954                invalidate();
5955            }
5956        }
5957    }
5958
5959    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
5960
5961    @Override
5962    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
5963        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
5964        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
5965        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
5966        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
5967
5968        int width;
5969        int height;
5970
5971        BoringLayout.Metrics boring = UNKNOWN_BORING;
5972        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
5973
5974        if (mTextDir == null) {
5975            resolveTextDirection();
5976        }
5977
5978        int des = -1;
5979        boolean fromexisting = false;
5980
5981        if (widthMode == MeasureSpec.EXACTLY) {
5982            // Parent has told us how big to be. So be it.
5983            width = widthSize;
5984        } else {
5985            if (mLayout != null && mEllipsize == null) {
5986                des = desired(mLayout);
5987            }
5988
5989            if (des < 0) {
5990                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
5991                if (boring != null) {
5992                    mBoring = boring;
5993                }
5994            } else {
5995                fromexisting = true;
5996            }
5997
5998            if (boring == null || boring == UNKNOWN_BORING) {
5999                if (des < 0) {
6000                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
6001                }
6002                width = des;
6003            } else {
6004                width = boring.width;
6005            }
6006
6007            final Drawables dr = mDrawables;
6008            if (dr != null) {
6009                width = Math.max(width, dr.mDrawableWidthTop);
6010                width = Math.max(width, dr.mDrawableWidthBottom);
6011            }
6012
6013            if (mHint != null) {
6014                int hintDes = -1;
6015                int hintWidth;
6016
6017                if (mHintLayout != null && mEllipsize == null) {
6018                    hintDes = desired(mHintLayout);
6019                }
6020
6021                if (hintDes < 0) {
6022                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
6023                    if (hintBoring != null) {
6024                        mHintBoring = hintBoring;
6025                    }
6026                }
6027
6028                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
6029                    if (hintDes < 0) {
6030                        hintDes = (int) FloatMath.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
6031                    }
6032                    hintWidth = hintDes;
6033                } else {
6034                    hintWidth = hintBoring.width;
6035                }
6036
6037                if (hintWidth > width) {
6038                    width = hintWidth;
6039                }
6040            }
6041
6042            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
6043
6044            if (mMaxWidthMode == EMS) {
6045                width = Math.min(width, mMaxWidth * getLineHeight());
6046            } else {
6047                width = Math.min(width, mMaxWidth);
6048            }
6049
6050            if (mMinWidthMode == EMS) {
6051                width = Math.max(width, mMinWidth * getLineHeight());
6052            } else {
6053                width = Math.max(width, mMinWidth);
6054            }
6055
6056            // Check against our minimum width
6057            width = Math.max(width, getSuggestedMinimumWidth());
6058
6059            if (widthMode == MeasureSpec.AT_MOST) {
6060                width = Math.min(widthSize, width);
6061            }
6062        }
6063
6064        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
6065        int unpaddedWidth = want;
6066
6067        if (mHorizontallyScrolling) want = VERY_WIDE;
6068
6069        int hintWant = want;
6070        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
6071
6072        if (mLayout == null) {
6073            makeNewLayout(want, hintWant, boring, hintBoring,
6074                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6075        } else {
6076            final boolean layoutChanged = (mLayout.getWidth() != want) ||
6077                    (hintWidth != hintWant) ||
6078                    (mLayout.getEllipsizedWidth() !=
6079                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
6080
6081            final boolean widthChanged = (mHint == null) &&
6082                    (mEllipsize == null) &&
6083                    (want > mLayout.getWidth()) &&
6084                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
6085
6086            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
6087
6088            if (layoutChanged || maximumChanged) {
6089                if (!maximumChanged && widthChanged) {
6090                    mLayout.increaseWidthTo(want);
6091                } else {
6092                    makeNewLayout(want, hintWant, boring, hintBoring,
6093                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6094                }
6095            } else {
6096                // Nothing has changed
6097            }
6098        }
6099
6100        if (heightMode == MeasureSpec.EXACTLY) {
6101            // Parent has told us how big to be. So be it.
6102            height = heightSize;
6103            mDesiredHeightAtMeasure = -1;
6104        } else {
6105            int desired = getDesiredHeight();
6106
6107            height = desired;
6108            mDesiredHeightAtMeasure = desired;
6109
6110            if (heightMode == MeasureSpec.AT_MOST) {
6111                height = Math.min(desired, heightSize);
6112            }
6113        }
6114
6115        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
6116        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
6117            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
6118        }
6119
6120        /*
6121         * We didn't let makeNewLayout() register to bring the cursor into view,
6122         * so do it here if there is any possibility that it is needed.
6123         */
6124        if (mMovement != null ||
6125            mLayout.getWidth() > unpaddedWidth ||
6126            mLayout.getHeight() > unpaddedHeight) {
6127            registerForPreDraw();
6128        } else {
6129            scrollTo(0, 0);
6130        }
6131
6132        setMeasuredDimension(width, height);
6133    }
6134
6135    private int getDesiredHeight() {
6136        return Math.max(
6137                getDesiredHeight(mLayout, true),
6138                getDesiredHeight(mHintLayout, mEllipsize != null));
6139    }
6140
6141    private int getDesiredHeight(Layout layout, boolean cap) {
6142        if (layout == null) {
6143            return 0;
6144        }
6145
6146        int linecount = layout.getLineCount();
6147        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
6148        int desired = layout.getLineTop(linecount);
6149
6150        final Drawables dr = mDrawables;
6151        if (dr != null) {
6152            desired = Math.max(desired, dr.mDrawableHeightLeft);
6153            desired = Math.max(desired, dr.mDrawableHeightRight);
6154        }
6155
6156        desired += pad;
6157
6158        if (mMaxMode == LINES) {
6159            /*
6160             * Don't cap the hint to a certain number of lines.
6161             * (Do cap it, though, if we have a maximum pixel height.)
6162             */
6163            if (cap) {
6164                if (linecount > mMaximum) {
6165                    desired = layout.getLineTop(mMaximum);
6166
6167                    if (dr != null) {
6168                        desired = Math.max(desired, dr.mDrawableHeightLeft);
6169                        desired = Math.max(desired, dr.mDrawableHeightRight);
6170                    }
6171
6172                    desired += pad;
6173                    linecount = mMaximum;
6174                }
6175            }
6176        } else {
6177            desired = Math.min(desired, mMaximum);
6178        }
6179
6180        if (mMinMode == LINES) {
6181            if (linecount < mMinimum) {
6182                desired += getLineHeight() * (mMinimum - linecount);
6183            }
6184        } else {
6185            desired = Math.max(desired, mMinimum);
6186        }
6187
6188        // Check against our minimum height
6189        desired = Math.max(desired, getSuggestedMinimumHeight());
6190
6191        return desired;
6192    }
6193
6194    /**
6195     * Check whether a change to the existing text layout requires a
6196     * new view layout.
6197     */
6198    private void checkForResize() {
6199        boolean sizeChanged = false;
6200
6201        if (mLayout != null) {
6202            // Check if our width changed
6203            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
6204                sizeChanged = true;
6205                invalidate();
6206            }
6207
6208            // Check if our height changed
6209            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
6210                int desiredHeight = getDesiredHeight();
6211
6212                if (desiredHeight != this.getHeight()) {
6213                    sizeChanged = true;
6214                }
6215            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
6216                if (mDesiredHeightAtMeasure >= 0) {
6217                    int desiredHeight = getDesiredHeight();
6218
6219                    if (desiredHeight != mDesiredHeightAtMeasure) {
6220                        sizeChanged = true;
6221                    }
6222                }
6223            }
6224        }
6225
6226        if (sizeChanged) {
6227            requestLayout();
6228            // caller will have already invalidated
6229        }
6230    }
6231
6232    /**
6233     * Check whether entirely new text requires a new view layout
6234     * or merely a new text layout.
6235     */
6236    private void checkForRelayout() {
6237        // If we have a fixed width, we can just swap in a new text layout
6238        // if the text height stays the same or if the view height is fixed.
6239
6240        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
6241                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
6242                (mHint == null || mHintLayout != null) &&
6243                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
6244            // Static width, so try making a new text layout.
6245
6246            int oldht = mLayout.getHeight();
6247            int want = mLayout.getWidth();
6248            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
6249
6250            /*
6251             * No need to bring the text into view, since the size is not
6252             * changing (unless we do the requestLayout(), in which case it
6253             * will happen at measure).
6254             */
6255            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
6256                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
6257                          false);
6258
6259            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
6260                // In a fixed-height view, so use our new text layout.
6261                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
6262                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
6263                    invalidate();
6264                    return;
6265                }
6266
6267                // Dynamic height, but height has stayed the same,
6268                // so use our new text layout.
6269                if (mLayout.getHeight() == oldht &&
6270                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
6271                    invalidate();
6272                    return;
6273                }
6274            }
6275
6276            // We lose: the height has changed and we have a dynamic height.
6277            // Request a new view layout using our new text layout.
6278            requestLayout();
6279            invalidate();
6280        } else {
6281            // Dynamic width, so we have no choice but to request a new
6282            // view layout with a new text layout.
6283            nullLayouts();
6284            requestLayout();
6285            invalidate();
6286        }
6287    }
6288
6289    @Override
6290    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
6291        super.onLayout(changed, left, top, right, bottom);
6292        if (changed && mEditor != null) getEditor().invalidateTextDisplayList();
6293    }
6294
6295    private boolean isShowingHint() {
6296        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
6297    }
6298
6299    /**
6300     * Returns true if anything changed.
6301     */
6302    private boolean bringTextIntoView() {
6303        Layout layout = isShowingHint() ? mHintLayout : mLayout;
6304        int line = 0;
6305        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6306            line = layout.getLineCount() - 1;
6307        }
6308
6309        Layout.Alignment a = layout.getParagraphAlignment(line);
6310        int dir = layout.getParagraphDirection(line);
6311        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6312        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6313        int ht = layout.getHeight();
6314
6315        int scrollx, scrolly;
6316
6317        // Convert to left, center, or right alignment.
6318        if (a == Layout.Alignment.ALIGN_NORMAL) {
6319            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
6320                Layout.Alignment.ALIGN_RIGHT;
6321        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
6322            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
6323                Layout.Alignment.ALIGN_LEFT;
6324        }
6325
6326        if (a == Layout.Alignment.ALIGN_CENTER) {
6327            /*
6328             * Keep centered if possible, or, if it is too wide to fit,
6329             * keep leading edge in view.
6330             */
6331
6332            int left = (int) FloatMath.floor(layout.getLineLeft(line));
6333            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6334
6335            if (right - left < hspace) {
6336                scrollx = (right + left) / 2 - hspace / 2;
6337            } else {
6338                if (dir < 0) {
6339                    scrollx = right - hspace;
6340                } else {
6341                    scrollx = left;
6342                }
6343            }
6344        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
6345            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6346            scrollx = right - hspace;
6347        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
6348            scrollx = (int) FloatMath.floor(layout.getLineLeft(line));
6349        }
6350
6351        if (ht < vspace) {
6352            scrolly = 0;
6353        } else {
6354            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6355                scrolly = ht - vspace;
6356            } else {
6357                scrolly = 0;
6358            }
6359        }
6360
6361        if (scrollx != mScrollX || scrolly != mScrollY) {
6362            scrollTo(scrollx, scrolly);
6363            return true;
6364        } else {
6365            return false;
6366        }
6367    }
6368
6369    /**
6370     * Move the point, specified by the offset, into the view if it is needed.
6371     * This has to be called after layout. Returns true if anything changed.
6372     */
6373    public boolean bringPointIntoView(int offset) {
6374        boolean changed = false;
6375
6376        Layout layout = isShowingHint() ? mHintLayout: mLayout;
6377
6378        if (layout == null) return changed;
6379
6380        int line = layout.getLineForOffset(offset);
6381
6382        // FIXME: Is it okay to truncate this, or should we round?
6383        final int x = (int)layout.getPrimaryHorizontal(offset);
6384        final int top = layout.getLineTop(line);
6385        final int bottom = layout.getLineTop(line + 1);
6386
6387        int left = (int) FloatMath.floor(layout.getLineLeft(line));
6388        int right = (int) FloatMath.ceil(layout.getLineRight(line));
6389        int ht = layout.getHeight();
6390
6391        int grav;
6392
6393        switch (layout.getParagraphAlignment(line)) {
6394            case ALIGN_LEFT:
6395                grav = 1;
6396                break;
6397            case ALIGN_RIGHT:
6398                grav = -1;
6399                break;
6400            case ALIGN_NORMAL:
6401                grav = layout.getParagraphDirection(line);
6402                break;
6403            case ALIGN_OPPOSITE:
6404                grav = -layout.getParagraphDirection(line);
6405                break;
6406            case ALIGN_CENTER:
6407            default:
6408                grav = 0;
6409                break;
6410        }
6411
6412        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6413        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6414
6415        int hslack = (bottom - top) / 2;
6416        int vslack = hslack;
6417
6418        if (vslack > vspace / 4)
6419            vslack = vspace / 4;
6420        if (hslack > hspace / 4)
6421            hslack = hspace / 4;
6422
6423        int hs = mScrollX;
6424        int vs = mScrollY;
6425
6426        if (top - vs < vslack)
6427            vs = top - vslack;
6428        if (bottom - vs > vspace - vslack)
6429            vs = bottom - (vspace - vslack);
6430        if (ht - vs < vspace)
6431            vs = ht - vspace;
6432        if (0 - vs > 0)
6433            vs = 0;
6434
6435        if (grav != 0) {
6436            if (x - hs < hslack) {
6437                hs = x - hslack;
6438            }
6439            if (x - hs > hspace - hslack) {
6440                hs = x - (hspace - hslack);
6441            }
6442        }
6443
6444        if (grav < 0) {
6445            if (left - hs > 0)
6446                hs = left;
6447            if (right - hs < hspace)
6448                hs = right - hspace;
6449        } else if (grav > 0) {
6450            if (right - hs < hspace)
6451                hs = right - hspace;
6452            if (left - hs > 0)
6453                hs = left;
6454        } else /* grav == 0 */ {
6455            if (right - left <= hspace) {
6456                /*
6457                 * If the entire text fits, center it exactly.
6458                 */
6459                hs = left - (hspace - (right - left)) / 2;
6460            } else if (x > right - hslack) {
6461                /*
6462                 * If we are near the right edge, keep the right edge
6463                 * at the edge of the view.
6464                 */
6465                hs = right - hspace;
6466            } else if (x < left + hslack) {
6467                /*
6468                 * If we are near the left edge, keep the left edge
6469                 * at the edge of the view.
6470                 */
6471                hs = left;
6472            } else if (left > hs) {
6473                /*
6474                 * Is there whitespace visible at the left?  Fix it if so.
6475                 */
6476                hs = left;
6477            } else if (right < hs + hspace) {
6478                /*
6479                 * Is there whitespace visible at the right?  Fix it if so.
6480                 */
6481                hs = right - hspace;
6482            } else {
6483                /*
6484                 * Otherwise, float as needed.
6485                 */
6486                if (x - hs < hslack) {
6487                    hs = x - hslack;
6488                }
6489                if (x - hs > hspace - hslack) {
6490                    hs = x - (hspace - hslack);
6491                }
6492            }
6493        }
6494
6495        if (hs != mScrollX || vs != mScrollY) {
6496            if (mScroller == null) {
6497                scrollTo(hs, vs);
6498            } else {
6499                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
6500                int dx = hs - mScrollX;
6501                int dy = vs - mScrollY;
6502
6503                if (duration > ANIMATED_SCROLL_GAP) {
6504                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
6505                    awakenScrollBars(mScroller.getDuration());
6506                    invalidate();
6507                } else {
6508                    if (!mScroller.isFinished()) {
6509                        mScroller.abortAnimation();
6510                    }
6511
6512                    scrollBy(dx, dy);
6513                }
6514
6515                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
6516            }
6517
6518            changed = true;
6519        }
6520
6521        if (isFocused()) {
6522            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
6523            // requestRectangleOnScreen() is in terms of content coordinates.
6524
6525            // The offsets here are to ensure the rectangle we are using is
6526            // within our view bounds, in case the cursor is on the far left
6527            // or right.  If it isn't withing the bounds, then this request
6528            // will be ignored.
6529            if (mTempRect == null) mTempRect = new Rect();
6530            mTempRect.set(x - 2, top, x + 2, bottom);
6531            getInterestingRect(mTempRect, line);
6532            mTempRect.offset(mScrollX, mScrollY);
6533
6534            if (requestRectangleOnScreen(mTempRect)) {
6535                changed = true;
6536            }
6537        }
6538
6539        return changed;
6540    }
6541
6542    /**
6543     * Move the cursor, if needed, so that it is at an offset that is visible
6544     * to the user.  This will not move the cursor if it represents more than
6545     * one character (a selection range).  This will only work if the
6546     * TextView contains spannable text; otherwise it will do nothing.
6547     *
6548     * @return True if the cursor was actually moved, false otherwise.
6549     */
6550    public boolean moveCursorToVisibleOffset() {
6551        if (!(mText instanceof Spannable)) {
6552            return false;
6553        }
6554        int start = getSelectionStart();
6555        int end = getSelectionEnd();
6556        if (start != end) {
6557            return false;
6558        }
6559
6560        // First: make sure the line is visible on screen:
6561
6562        int line = mLayout.getLineForOffset(start);
6563
6564        final int top = mLayout.getLineTop(line);
6565        final int bottom = mLayout.getLineTop(line + 1);
6566        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6567        int vslack = (bottom - top) / 2;
6568        if (vslack > vspace / 4)
6569            vslack = vspace / 4;
6570        final int vs = mScrollY;
6571
6572        if (top < (vs+vslack)) {
6573            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
6574        } else if (bottom > (vspace+vs-vslack)) {
6575            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
6576        }
6577
6578        // Next: make sure the character is visible on screen:
6579
6580        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6581        final int hs = mScrollX;
6582        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
6583        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
6584
6585        // line might contain bidirectional text
6586        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
6587        final int highChar = leftChar > rightChar ? leftChar : rightChar;
6588
6589        int newStart = start;
6590        if (newStart < lowChar) {
6591            newStart = lowChar;
6592        } else if (newStart > highChar) {
6593            newStart = highChar;
6594        }
6595
6596        if (newStart != start) {
6597            Selection.setSelection((Spannable)mText, newStart);
6598            return true;
6599        }
6600
6601        return false;
6602    }
6603
6604    @Override
6605    public void computeScroll() {
6606        if (mScroller != null) {
6607            if (mScroller.computeScrollOffset()) {
6608                mScrollX = mScroller.getCurrX();
6609                mScrollY = mScroller.getCurrY();
6610                invalidateParentCaches();
6611                postInvalidate();  // So we draw again
6612            }
6613        }
6614    }
6615
6616    private void getInterestingRect(Rect r, int line) {
6617        convertFromViewportToContentCoordinates(r);
6618
6619        // Rectangle can can be expanded on first and last line to take
6620        // padding into account.
6621        // TODO Take left/right padding into account too?
6622        if (line == 0) r.top -= getExtendedPaddingTop();
6623        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
6624    }
6625
6626    private void convertFromViewportToContentCoordinates(Rect r) {
6627        final int horizontalOffset = viewportToContentHorizontalOffset();
6628        r.left += horizontalOffset;
6629        r.right += horizontalOffset;
6630
6631        final int verticalOffset = viewportToContentVerticalOffset();
6632        r.top += verticalOffset;
6633        r.bottom += verticalOffset;
6634    }
6635
6636    private int viewportToContentHorizontalOffset() {
6637        return getCompoundPaddingLeft() - mScrollX;
6638    }
6639
6640    private int viewportToContentVerticalOffset() {
6641        int offset = getExtendedPaddingTop() - mScrollY;
6642        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6643            offset += getVerticalOffset(false);
6644        }
6645        return offset;
6646    }
6647
6648    @Override
6649    public void debug(int depth) {
6650        super.debug(depth);
6651
6652        String output = debugIndent(depth);
6653        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
6654                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
6655                + "} ";
6656
6657        if (mText != null) {
6658
6659            output += "mText=\"" + mText + "\" ";
6660            if (mLayout != null) {
6661                output += "mLayout width=" + mLayout.getWidth()
6662                        + " height=" + mLayout.getHeight();
6663            }
6664        } else {
6665            output += "mText=NULL";
6666        }
6667        Log.d(VIEW_LOG_TAG, output);
6668    }
6669
6670    /**
6671     * Convenience for {@link Selection#getSelectionStart}.
6672     */
6673    @ViewDebug.ExportedProperty(category = "text")
6674    public int getSelectionStart() {
6675        return Selection.getSelectionStart(getText());
6676    }
6677
6678    /**
6679     * Convenience for {@link Selection#getSelectionEnd}.
6680     */
6681    @ViewDebug.ExportedProperty(category = "text")
6682    public int getSelectionEnd() {
6683        return Selection.getSelectionEnd(getText());
6684    }
6685
6686    /**
6687     * Return true iff there is a selection inside this text view.
6688     */
6689    public boolean hasSelection() {
6690        final int selectionStart = getSelectionStart();
6691        final int selectionEnd = getSelectionEnd();
6692
6693        return selectionStart >= 0 && selectionStart != selectionEnd;
6694    }
6695
6696    /**
6697     * Sets the properties of this field (lines, horizontally scrolling,
6698     * transformation method) to be for a single-line input.
6699     *
6700     * @attr ref android.R.styleable#TextView_singleLine
6701     */
6702    public void setSingleLine() {
6703        setSingleLine(true);
6704    }
6705
6706    /**
6707     * Sets the properties of this field to transform input to ALL CAPS
6708     * display. This may use a "small caps" formatting if available.
6709     * This setting will be ignored if this field is editable or selectable.
6710     *
6711     * This call replaces the current transformation method. Disabling this
6712     * will not necessarily restore the previous behavior from before this
6713     * was enabled.
6714     *
6715     * @see #setTransformationMethod(TransformationMethod)
6716     * @attr ref android.R.styleable#TextView_textAllCaps
6717     */
6718    public void setAllCaps(boolean allCaps) {
6719        if (allCaps) {
6720            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
6721        } else {
6722            setTransformationMethod(null);
6723        }
6724    }
6725
6726    /**
6727     * If true, sets the properties of this field (number of lines, horizontally scrolling,
6728     * transformation method) to be for a single-line input; if false, restores these to the default
6729     * conditions.
6730     *
6731     * Note that the default conditions are not necessarily those that were in effect prior this
6732     * method, and you may want to reset these properties to your custom values.
6733     *
6734     * @attr ref android.R.styleable#TextView_singleLine
6735     */
6736    @android.view.RemotableViewMethod
6737    public void setSingleLine(boolean singleLine) {
6738        // Could be used, but may break backward compatibility.
6739        // if (mSingleLine == singleLine) return;
6740        setInputTypeSingleLine(singleLine);
6741        applySingleLine(singleLine, true, true);
6742    }
6743
6744    /**
6745     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
6746     * @param singleLine
6747     */
6748    private void setInputTypeSingleLine(boolean singleLine) {
6749        if (mEditor != null && (getEditor().mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6750            if (singleLine) {
6751                getEditor().mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6752            } else {
6753                getEditor().mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6754            }
6755        }
6756    }
6757
6758    private void applySingleLine(boolean singleLine, boolean applyTransformation,
6759            boolean changeMaxLines) {
6760        mSingleLine = singleLine;
6761        if (singleLine) {
6762            setLines(1);
6763            setHorizontallyScrolling(true);
6764            if (applyTransformation) {
6765                setTransformationMethod(SingleLineTransformationMethod.getInstance());
6766            }
6767        } else {
6768            if (changeMaxLines) {
6769                setMaxLines(Integer.MAX_VALUE);
6770            }
6771            setHorizontallyScrolling(false);
6772            if (applyTransformation) {
6773                setTransformationMethod(null);
6774            }
6775        }
6776    }
6777
6778    /**
6779     * Causes words in the text that are longer than the view is wide
6780     * to be ellipsized instead of broken in the middle.  You may also
6781     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
6782     * to constrain the text to a single line.  Use <code>null</code>
6783     * to turn off ellipsizing.
6784     *
6785     * If {@link #setMaxLines} has been used to set two or more lines,
6786     * {@link android.text.TextUtils.TruncateAt#END} and
6787     * {@link android.text.TextUtils.TruncateAt#MARQUEE}* are only supported
6788     * (other ellipsizing types will not do anything).
6789     *
6790     * @attr ref android.R.styleable#TextView_ellipsize
6791     */
6792    public void setEllipsize(TextUtils.TruncateAt where) {
6793        // TruncateAt is an enum. != comparison is ok between these singleton objects.
6794        if (mEllipsize != where) {
6795            mEllipsize = where;
6796
6797            if (mLayout != null) {
6798                nullLayouts();
6799                requestLayout();
6800                invalidate();
6801            }
6802        }
6803    }
6804
6805    /**
6806     * Sets how many times to repeat the marquee animation. Only applied if the
6807     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
6808     *
6809     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
6810     */
6811    public void setMarqueeRepeatLimit(int marqueeLimit) {
6812        mMarqueeRepeatLimit = marqueeLimit;
6813    }
6814
6815    /**
6816     * Returns where, if anywhere, words that are longer than the view
6817     * is wide should be ellipsized.
6818     */
6819    @ViewDebug.ExportedProperty
6820    public TextUtils.TruncateAt getEllipsize() {
6821        return mEllipsize;
6822    }
6823
6824    /**
6825     * Set the TextView so that when it takes focus, all the text is
6826     * selected.
6827     *
6828     * @attr ref android.R.styleable#TextView_selectAllOnFocus
6829     */
6830    @android.view.RemotableViewMethod
6831    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
6832        createEditorIfNeeded("setSelectAllOnFocus");
6833        getEditor().mSelectAllOnFocus = selectAllOnFocus;
6834
6835        if (selectAllOnFocus && !(mText instanceof Spannable)) {
6836            setText(mText, BufferType.SPANNABLE);
6837        }
6838    }
6839
6840    /**
6841     * Set whether the cursor is visible.  The default is true.
6842     *
6843     * @attr ref android.R.styleable#TextView_cursorVisible
6844     */
6845    @android.view.RemotableViewMethod
6846    public void setCursorVisible(boolean visible) {
6847        if (visible && mEditor == null) return; // visible is the default value with no edit data
6848        createEditorIfNeeded("setCursorVisible");
6849        if (getEditor().mCursorVisible != visible) {
6850            getEditor().mCursorVisible = visible;
6851            invalidate();
6852
6853            makeBlink();
6854
6855            // InsertionPointCursorController depends on mCursorVisible
6856            prepareCursorControllers();
6857        }
6858    }
6859
6860    private boolean isCursorVisible() {
6861        // The default value is true, even when there is no associated Editor
6862        return mEditor == null ? true : (getEditor().mCursorVisible && isTextEditable());
6863    }
6864
6865    private boolean canMarquee() {
6866        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
6867        return width > 0 && (mLayout.getLineWidth(0) > width ||
6868                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
6869                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
6870    }
6871
6872    private void startMarquee() {
6873        // Do not ellipsize EditText
6874        if (getKeyListener() != null) return;
6875
6876        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
6877            return;
6878        }
6879
6880        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
6881                getLineCount() == 1 && canMarquee()) {
6882
6883            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6884                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
6885                final Layout tmp = mLayout;
6886                mLayout = mSavedMarqueeModeLayout;
6887                mSavedMarqueeModeLayout = tmp;
6888                setHorizontalFadingEdgeEnabled(true);
6889                requestLayout();
6890                invalidate();
6891            }
6892
6893            if (mMarquee == null) mMarquee = new Marquee(this);
6894            mMarquee.start(mMarqueeRepeatLimit);
6895        }
6896    }
6897
6898    private void stopMarquee() {
6899        if (mMarquee != null && !mMarquee.isStopped()) {
6900            mMarquee.stop();
6901        }
6902
6903        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
6904            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
6905            final Layout tmp = mSavedMarqueeModeLayout;
6906            mSavedMarqueeModeLayout = mLayout;
6907            mLayout = tmp;
6908            setHorizontalFadingEdgeEnabled(false);
6909            requestLayout();
6910            invalidate();
6911        }
6912    }
6913
6914    private void startStopMarquee(boolean start) {
6915        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6916            if (start) {
6917                startMarquee();
6918            } else {
6919                stopMarquee();
6920            }
6921        }
6922    }
6923
6924    /**
6925     * This method is called when the text is changed, in case any subclasses
6926     * would like to know.
6927     *
6928     * Within <code>text</code>, the <code>lengthAfter</code> characters
6929     * beginning at <code>start</code> have just replaced old text that had
6930     * length <code>lengthBefore</code>. It is an error to attempt to make
6931     * changes to <code>text</code> from this callback.
6932     *
6933     * @param text The text the TextView is displaying
6934     * @param start The offset of the start of the range of the text that was
6935     * modified
6936     * @param lengthBefore The length of the former text that has been replaced
6937     * @param lengthAfter The length of the replacement modified text
6938     */
6939    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
6940        // intentionally empty, template pattern method can be overridden by subclasses
6941    }
6942
6943    /**
6944     * This method is called when the selection has changed, in case any
6945     * subclasses would like to know.
6946     *
6947     * @param selStart The new selection start location.
6948     * @param selEnd The new selection end location.
6949     */
6950    protected void onSelectionChanged(int selStart, int selEnd) {
6951        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
6952    }
6953
6954    /**
6955     * Adds a TextWatcher to the list of those whose methods are called
6956     * whenever this TextView's text changes.
6957     * <p>
6958     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
6959     * not called after {@link #setText} calls.  Now, doing {@link #setText}
6960     * if there are any text changed listeners forces the buffer type to
6961     * Editable if it would not otherwise be and does call this method.
6962     */
6963    public void addTextChangedListener(TextWatcher watcher) {
6964        if (mListeners == null) {
6965            mListeners = new ArrayList<TextWatcher>();
6966        }
6967
6968        mListeners.add(watcher);
6969    }
6970
6971    /**
6972     * Removes the specified TextWatcher from the list of those whose
6973     * methods are called
6974     * whenever this TextView's text changes.
6975     */
6976    public void removeTextChangedListener(TextWatcher watcher) {
6977        if (mListeners != null) {
6978            int i = mListeners.indexOf(watcher);
6979
6980            if (i >= 0) {
6981                mListeners.remove(i);
6982            }
6983        }
6984    }
6985
6986    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
6987        if (mListeners != null) {
6988            final ArrayList<TextWatcher> list = mListeners;
6989            final int count = list.size();
6990            for (int i = 0; i < count; i++) {
6991                list.get(i).beforeTextChanged(text, start, before, after);
6992            }
6993        }
6994
6995        // The spans that are inside or intersect the modified region no longer make sense
6996        removeIntersectingSpans(start, start + before, SpellCheckSpan.class);
6997        removeIntersectingSpans(start, start + before, SuggestionSpan.class);
6998    }
6999
7000    // Removes all spans that are inside or actually overlap the start..end range
7001    private <T> void removeIntersectingSpans(int start, int end, Class<T> type) {
7002        if (!(mText instanceof Editable)) return;
7003        Editable text = (Editable) mText;
7004
7005        T[] spans = text.getSpans(start, end, type);
7006        final int length = spans.length;
7007        for (int i = 0; i < length; i++) {
7008            final int s = text.getSpanStart(spans[i]);
7009            final int e = text.getSpanEnd(spans[i]);
7010            // Spans that are adjacent to the edited region will be handled in
7011            // updateSpellCheckSpans. Result depends on what will be added (space or text)
7012            if (e == start || s == end) break;
7013            text.removeSpan(spans[i]);
7014        }
7015    }
7016
7017    /**
7018     * Not private so it can be called from an inner class without going
7019     * through a thunk.
7020     */
7021    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
7022        if (mListeners != null) {
7023            final ArrayList<TextWatcher> list = mListeners;
7024            final int count = list.size();
7025            for (int i = 0; i < count; i++) {
7026                list.get(i).onTextChanged(text, start, before, after);
7027            }
7028        }
7029
7030        if (mEditor != null) getEditor().sendOnTextChanged(start, after);
7031    }
7032
7033    /**
7034     * Not private so it can be called from an inner class without going
7035     * through a thunk.
7036     */
7037    void sendAfterTextChanged(Editable text) {
7038        if (mListeners != null) {
7039            final ArrayList<TextWatcher> list = mListeners;
7040            final int count = list.size();
7041            for (int i = 0; i < count; i++) {
7042                list.get(i).afterTextChanged(text);
7043            }
7044        }
7045    }
7046
7047    /**
7048     * Not private so it can be called from an inner class without going
7049     * through a thunk.
7050     */
7051    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
7052        final InputMethodState ims = mEditor == null ? null : getEditor().mInputMethodState;
7053        if (ims == null || ims.mBatchEditNesting == 0) {
7054            updateAfterEdit();
7055        }
7056        if (ims != null) {
7057            ims.mContentChanged = true;
7058            if (ims.mChangedStart < 0) {
7059                ims.mChangedStart = start;
7060                ims.mChangedEnd = start+before;
7061            } else {
7062                ims.mChangedStart = Math.min(ims.mChangedStart, start);
7063                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
7064            }
7065            ims.mChangedDelta += after-before;
7066        }
7067
7068        sendOnTextChanged(buffer, start, before, after);
7069        onTextChanged(buffer, start, before, after);
7070    }
7071
7072    /**
7073     * Not private so it can be called from an inner class without going
7074     * through a thunk.
7075     */
7076    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
7077        // XXX Make the start and end move together if this ends up
7078        // spending too much time invalidating.
7079
7080        boolean selChanged = false;
7081        int newSelStart=-1, newSelEnd=-1;
7082
7083        final InputMethodState ims = mEditor == null ? null : getEditor().mInputMethodState;
7084
7085        if (what == Selection.SELECTION_END) {
7086            selChanged = true;
7087            newSelEnd = newStart;
7088
7089            if (oldStart >= 0 || newStart >= 0) {
7090                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
7091                registerForPreDraw();
7092                makeBlink();
7093            }
7094        }
7095
7096        if (what == Selection.SELECTION_START) {
7097            selChanged = true;
7098            newSelStart = newStart;
7099
7100            if (oldStart >= 0 || newStart >= 0) {
7101                int end = Selection.getSelectionEnd(buf);
7102                invalidateCursor(end, oldStart, newStart);
7103            }
7104        }
7105
7106        if (selChanged) {
7107            mHighlightPathBogus = true;
7108            if (mEditor != null && !isFocused()) getEditor().mSelectionMoved = true;
7109
7110            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
7111                if (newSelStart < 0) {
7112                    newSelStart = Selection.getSelectionStart(buf);
7113                }
7114                if (newSelEnd < 0) {
7115                    newSelEnd = Selection.getSelectionEnd(buf);
7116                }
7117                onSelectionChanged(newSelStart, newSelEnd);
7118            }
7119        }
7120
7121        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
7122                what instanceof CharacterStyle) {
7123            if (ims == null || ims.mBatchEditNesting == 0) {
7124                invalidate();
7125                mHighlightPathBogus = true;
7126                checkForResize();
7127            } else {
7128                ims.mContentChanged = true;
7129            }
7130            if (mEditor != null) getEditor().invalidateTextDisplayList();
7131        }
7132
7133        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
7134            mHighlightPathBogus = true;
7135            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
7136                ims.mSelectionModeChanged = true;
7137            }
7138
7139            if (Selection.getSelectionStart(buf) >= 0) {
7140                if (ims == null || ims.mBatchEditNesting == 0) {
7141                    invalidateCursor();
7142                } else {
7143                    ims.mCursorChanged = true;
7144                }
7145            }
7146        }
7147
7148        if (what instanceof ParcelableSpan) {
7149            // If this is a span that can be sent to a remote process,
7150            // the current extract editor would be interested in it.
7151            if (ims != null && ims.mExtracting != null) {
7152                if (ims.mBatchEditNesting != 0) {
7153                    if (oldStart >= 0) {
7154                        if (ims.mChangedStart > oldStart) {
7155                            ims.mChangedStart = oldStart;
7156                        }
7157                        if (ims.mChangedStart > oldEnd) {
7158                            ims.mChangedStart = oldEnd;
7159                        }
7160                    }
7161                    if (newStart >= 0) {
7162                        if (ims.mChangedStart > newStart) {
7163                            ims.mChangedStart = newStart;
7164                        }
7165                        if (ims.mChangedStart > newEnd) {
7166                            ims.mChangedStart = newEnd;
7167                        }
7168                    }
7169                } else {
7170                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
7171                            + oldStart + "-" + oldEnd + ","
7172                            + newStart + "-" + newEnd + what);
7173                    ims.mContentChanged = true;
7174                }
7175            }
7176        }
7177
7178        if (mEditor != null && getEditor().mSpellChecker != null && newStart < 0 && what instanceof SpellCheckSpan) {
7179            getEditor().mSpellChecker.removeSpellCheckSpan((SpellCheckSpan) what);
7180        }
7181    }
7182
7183    /**
7184     * Create new SpellCheckSpans on the modified region.
7185     */
7186    private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) {
7187        if (isTextEditable() && isSuggestionsEnabled() && !(this instanceof ExtractEditText)) {
7188            if (getEditor().mSpellChecker == null && createSpellChecker) {
7189                getEditor().mSpellChecker = new SpellChecker(this);
7190            }
7191            if (getEditor().mSpellChecker != null) {
7192                getEditor().mSpellChecker.spellCheck(start, end);
7193            }
7194        }
7195    }
7196
7197    /**
7198     * @hide
7199     */
7200    @Override
7201    public void dispatchFinishTemporaryDetach() {
7202        mDispatchTemporaryDetach = true;
7203        super.dispatchFinishTemporaryDetach();
7204        mDispatchTemporaryDetach = false;
7205    }
7206
7207    @Override
7208    public void onStartTemporaryDetach() {
7209        super.onStartTemporaryDetach();
7210        // Only track when onStartTemporaryDetach() is called directly,
7211        // usually because this instance is an editable field in a list
7212        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
7213
7214        // Because of View recycling in ListView, there is no easy way to know when a TextView with
7215        // selection becomes visible again. Until a better solution is found, stop text selection
7216        // mode (if any) as soon as this TextView is recycled.
7217        if (mEditor != null) hideControllers();
7218    }
7219
7220    @Override
7221    public void onFinishTemporaryDetach() {
7222        super.onFinishTemporaryDetach();
7223        // Only track when onStartTemporaryDetach() is called directly,
7224        // usually because this instance is an editable field in a list
7225        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
7226    }
7227
7228    @Override
7229    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
7230        if (mTemporaryDetach) {
7231            // If we are temporarily in the detach state, then do nothing.
7232            super.onFocusChanged(focused, direction, previouslyFocusedRect);
7233            return;
7234        }
7235
7236        if (mEditor != null) getEditor().onFocusChanged(focused, direction);
7237
7238        if (focused) {
7239            if (mText instanceof Spannable) {
7240                Spannable sp = (Spannable) mText;
7241                MetaKeyKeyListener.resetMetaState(sp);
7242            }
7243        }
7244
7245        startStopMarquee(focused);
7246
7247        if (mTransformation != null) {
7248            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
7249        }
7250
7251        super.onFocusChanged(focused, direction, previouslyFocusedRect);
7252    }
7253
7254    @Override
7255    public void onWindowFocusChanged(boolean hasWindowFocus) {
7256        super.onWindowFocusChanged(hasWindowFocus);
7257
7258        if (mEditor != null) getEditor().onWindowFocusChanged(hasWindowFocus);
7259
7260        startStopMarquee(hasWindowFocus);
7261    }
7262
7263    @Override
7264    protected void onVisibilityChanged(View changedView, int visibility) {
7265        super.onVisibilityChanged(changedView, visibility);
7266        if (mEditor != null && visibility != VISIBLE) {
7267            hideControllers();
7268        }
7269    }
7270
7271    /**
7272     * Use {@link BaseInputConnection#removeComposingSpans
7273     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
7274     * state from this text view.
7275     */
7276    public void clearComposingText() {
7277        if (mText instanceof Spannable) {
7278            BaseInputConnection.removeComposingSpans((Spannable)mText);
7279        }
7280    }
7281
7282    @Override
7283    public void setSelected(boolean selected) {
7284        boolean wasSelected = isSelected();
7285
7286        super.setSelected(selected);
7287
7288        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7289            if (selected) {
7290                startMarquee();
7291            } else {
7292                stopMarquee();
7293            }
7294        }
7295    }
7296
7297    @Override
7298    public boolean onTouchEvent(MotionEvent event) {
7299        final int action = event.getActionMasked();
7300
7301        if (mEditor != null) getEditor().onTouchEvent(event);
7302
7303        final boolean superResult = super.onTouchEvent(event);
7304
7305        /*
7306         * Don't handle the release after a long press, because it will
7307         * move the selection away from whatever the menu action was
7308         * trying to affect.
7309         */
7310        if (mEditor != null && getEditor().mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
7311            getEditor().mDiscardNextActionUp = false;
7312            return superResult;
7313        }
7314
7315        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
7316                (mEditor == null || !getEditor().mIgnoreActionUpEvent) && isFocused();
7317
7318         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
7319                && mText instanceof Spannable && mLayout != null) {
7320            boolean handled = false;
7321
7322            if (mMovement != null) {
7323                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
7324            }
7325
7326            final boolean textIsSelectable = isTextSelectable();
7327            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
7328                // The LinkMovementMethod which should handle taps on links has not been installed
7329                // on non editable text that support text selection.
7330                // We reproduce its behavior here to open links for these.
7331                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
7332                        getSelectionEnd(), ClickableSpan.class);
7333
7334                if (links.length > 0) {
7335                    links[0].onClick(this);
7336                    handled = true;
7337                }
7338            }
7339
7340            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
7341                // Show the IME, except when selecting in read-only text.
7342                final InputMethodManager imm = InputMethodManager.peekInstance();
7343                viewClicked(imm);
7344                if (!textIsSelectable) {
7345                    handled |= imm != null && imm.showSoftInput(this, 0);
7346                }
7347
7348                boolean selectAllGotFocus = getEditor().mSelectAllOnFocus && didTouchFocusSelect();
7349                hideControllers();
7350                if (!selectAllGotFocus && mText.length() > 0) {
7351                    // Move cursor
7352                    final int offset = getOffsetForPosition(event.getX(), event.getY());
7353                    Selection.setSelection((Spannable) mText, offset);
7354                    if (getEditor().mSpellChecker != null) {
7355                        // When the cursor moves, the word that was typed may need spell check
7356                        getEditor().mSpellChecker.onSelectionChanged();
7357                    }
7358                    if (!extractedTextModeWillBeStarted()) {
7359                        if (isCursorInsideEasyCorrectionSpan()) {
7360                            getEditor().mShowSuggestionRunnable = new Runnable() {
7361                                public void run() {
7362                                    showSuggestions();
7363                                }
7364                            };
7365                            // removeCallbacks is performed on every touch
7366                            postDelayed(getEditor().mShowSuggestionRunnable,
7367                                    ViewConfiguration.getDoubleTapTimeout());
7368                        } else if (hasInsertionController()) {
7369                            getInsertionController().show();
7370                        }
7371                    }
7372                }
7373
7374                handled = true;
7375            }
7376
7377            if (handled) {
7378                return true;
7379            }
7380        }
7381
7382        return superResult;
7383    }
7384
7385    /**
7386     * @return <code>true</code> if the cursor/current selection overlaps a {@link SuggestionSpan}.
7387     */
7388    private boolean isCursorInsideSuggestionSpan() {
7389        if (!(mText instanceof Spannable)) return false;
7390
7391        SuggestionSpan[] suggestionSpans = ((Spannable) mText).getSpans(getSelectionStart(),
7392                getSelectionEnd(), SuggestionSpan.class);
7393        return (suggestionSpans.length > 0);
7394    }
7395
7396    /**
7397     * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with
7398     * {@link SuggestionSpan#FLAG_EASY_CORRECT} set.
7399     */
7400    private boolean isCursorInsideEasyCorrectionSpan() {
7401        Spannable spannable = (Spannable) mText;
7402        SuggestionSpan[] suggestionSpans = spannable.getSpans(getSelectionStart(),
7403                getSelectionEnd(), SuggestionSpan.class);
7404        for (int i = 0; i < suggestionSpans.length; i++) {
7405            if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) {
7406                return true;
7407            }
7408        }
7409        return false;
7410    }
7411
7412    /**
7413     * Downgrades to simple suggestions all the easy correction spans that are not a spell check
7414     * span.
7415     */
7416    private void downgradeEasyCorrectionSpans() {
7417        if (mText instanceof Spannable) {
7418            Spannable spannable = (Spannable) mText;
7419            SuggestionSpan[] suggestionSpans = spannable.getSpans(0,
7420                    spannable.length(), SuggestionSpan.class);
7421            for (int i = 0; i < suggestionSpans.length; i++) {
7422                int flags = suggestionSpans[i].getFlags();
7423                if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
7424                        && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) {
7425                    flags &= ~SuggestionSpan.FLAG_EASY_CORRECT;
7426                    suggestionSpans[i].setFlags(flags);
7427                }
7428            }
7429        }
7430    }
7431
7432    @Override
7433    public boolean onGenericMotionEvent(MotionEvent event) {
7434        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7435            try {
7436                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
7437                    return true;
7438                }
7439            } catch (AbstractMethodError ex) {
7440                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
7441                // Ignore its absence in case third party applications implemented the
7442                // interface directly.
7443            }
7444        }
7445        return super.onGenericMotionEvent(event);
7446    }
7447
7448    private void prepareCursorControllers() {
7449        if (mEditor == null) return;
7450
7451        boolean windowSupportsHandles = false;
7452
7453        ViewGroup.LayoutParams params = getRootView().getLayoutParams();
7454        if (params instanceof WindowManager.LayoutParams) {
7455            WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params;
7456            windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW
7457                    || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW;
7458        }
7459
7460        getEditor().mInsertionControllerEnabled = windowSupportsHandles && isCursorVisible() && mLayout != null;
7461        getEditor().mSelectionControllerEnabled = windowSupportsHandles && textCanBeSelected() &&
7462                mLayout != null;
7463
7464        if (!getEditor().mInsertionControllerEnabled) {
7465            hideInsertionPointCursorController();
7466            if (getEditor().mInsertionPointCursorController != null) {
7467                getEditor().mInsertionPointCursorController.onDetached();
7468                getEditor().mInsertionPointCursorController = null;
7469            }
7470        }
7471
7472        if (!getEditor().mSelectionControllerEnabled) {
7473            stopSelectionActionMode();
7474            if (getEditor().mSelectionModifierCursorController != null) {
7475                getEditor().mSelectionModifierCursorController.onDetached();
7476                getEditor().mSelectionModifierCursorController = null;
7477            }
7478        }
7479    }
7480
7481    /**
7482     * @return True iff this TextView contains a text that can be edited, or if this is
7483     * a selectable TextView.
7484     */
7485    private boolean isTextEditable() {
7486        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
7487    }
7488
7489    /**
7490     * Returns true, only while processing a touch gesture, if the initial
7491     * touch down event caused focus to move to the text view and as a result
7492     * its selection changed.  Only valid while processing the touch gesture
7493     * of interest.
7494     */
7495    public boolean didTouchFocusSelect() {
7496        return mEditor != null && getEditor().mTouchFocusSelected;
7497    }
7498
7499    @Override
7500    public void cancelLongPress() {
7501        super.cancelLongPress();
7502        if (mEditor != null) getEditor().mIgnoreActionUpEvent = true;
7503    }
7504
7505    @Override
7506    public boolean onTrackballEvent(MotionEvent event) {
7507        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7508            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
7509                return true;
7510            }
7511        }
7512
7513        return super.onTrackballEvent(event);
7514    }
7515
7516    public void setScroller(Scroller s) {
7517        mScroller = s;
7518    }
7519
7520    /**
7521     * @return True when the TextView isFocused and has a valid zero-length selection (cursor).
7522     */
7523    private boolean shouldBlink() {
7524        if (mEditor == null || !isCursorVisible() || !isFocused()) return false;
7525
7526        final int start = getSelectionStart();
7527        if (start < 0) return false;
7528
7529        final int end = getSelectionEnd();
7530        if (end < 0) return false;
7531
7532        return start == end;
7533    }
7534
7535    private void makeBlink() {
7536        if (shouldBlink()) {
7537            getEditor().mShowCursor = SystemClock.uptimeMillis();
7538            if (getEditor().mBlink == null) getEditor().mBlink = new Blink(this);
7539            getEditor().mBlink.removeCallbacks(getEditor().mBlink);
7540            getEditor().mBlink.postAtTime(getEditor().mBlink, getEditor().mShowCursor + BLINK);
7541        } else {
7542            if (mEditor != null && getEditor().mBlink != null) getEditor().mBlink.removeCallbacks(getEditor().mBlink);
7543        }
7544    }
7545
7546    @Override
7547    protected float getLeftFadingEdgeStrength() {
7548        if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return 0.0f;
7549        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7550                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7551            if (mMarquee != null && !mMarquee.isStopped()) {
7552                final Marquee marquee = mMarquee;
7553                if (marquee.shouldDrawLeftFade()) {
7554                    return marquee.mScroll / getHorizontalFadingEdgeLength();
7555                } else {
7556                    return 0.0f;
7557                }
7558            } else if (getLineCount() == 1) {
7559                final int layoutDirection = getResolvedLayoutDirection();
7560                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7561                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7562                    case Gravity.LEFT:
7563                        return 0.0f;
7564                    case Gravity.RIGHT:
7565                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
7566                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
7567                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
7568                    case Gravity.CENTER_HORIZONTAL:
7569                        return 0.0f;
7570                }
7571            }
7572        }
7573        return super.getLeftFadingEdgeStrength();
7574    }
7575
7576    @Override
7577    protected float getRightFadingEdgeStrength() {
7578        if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return 0.0f;
7579        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7580                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7581            if (mMarquee != null && !mMarquee.isStopped()) {
7582                final Marquee marquee = mMarquee;
7583                return (marquee.mMaxFadeScroll - marquee.mScroll) / getHorizontalFadingEdgeLength();
7584            } else if (getLineCount() == 1) {
7585                final int layoutDirection = getResolvedLayoutDirection();
7586                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7587                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7588                    case Gravity.LEFT:
7589                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
7590                                getCompoundPaddingRight();
7591                        final float lineWidth = mLayout.getLineWidth(0);
7592                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
7593                    case Gravity.RIGHT:
7594                        return 0.0f;
7595                    case Gravity.CENTER_HORIZONTAL:
7596                    case Gravity.FILL_HORIZONTAL:
7597                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
7598                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
7599                                getHorizontalFadingEdgeLength();
7600                }
7601            }
7602        }
7603        return super.getRightFadingEdgeStrength();
7604    }
7605
7606    @Override
7607    protected int computeHorizontalScrollRange() {
7608        if (mLayout != null) {
7609            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
7610                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
7611        }
7612
7613        return super.computeHorizontalScrollRange();
7614    }
7615
7616    @Override
7617    protected int computeVerticalScrollRange() {
7618        if (mLayout != null)
7619            return mLayout.getHeight();
7620
7621        return super.computeVerticalScrollRange();
7622    }
7623
7624    @Override
7625    protected int computeVerticalScrollExtent() {
7626        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
7627    }
7628
7629    @Override
7630    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
7631        super.findViewsWithText(outViews, searched, flags);
7632        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
7633                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
7634            String searchedLowerCase = searched.toString().toLowerCase();
7635            String textLowerCase = mText.toString().toLowerCase();
7636            if (textLowerCase.contains(searchedLowerCase)) {
7637                outViews.add(this);
7638            }
7639        }
7640    }
7641
7642    public enum BufferType {
7643        NORMAL, SPANNABLE, EDITABLE,
7644    }
7645
7646    /**
7647     * Returns the TextView_textColor attribute from the
7648     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
7649     * from the TextView_textAppearance attribute, if TextView_textColor
7650     * was not set directly.
7651     */
7652    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
7653        ColorStateList colors;
7654        colors = attrs.getColorStateList(com.android.internal.R.styleable.
7655                                         TextView_textColor);
7656
7657        if (colors == null) {
7658            int ap = attrs.getResourceId(com.android.internal.R.styleable.
7659                                         TextView_textAppearance, -1);
7660            if (ap != -1) {
7661                TypedArray appearance;
7662                appearance = context.obtainStyledAttributes(ap,
7663                                            com.android.internal.R.styleable.TextAppearance);
7664                colors = appearance.getColorStateList(com.android.internal.R.styleable.
7665                                                  TextAppearance_textColor);
7666                appearance.recycle();
7667            }
7668        }
7669
7670        return colors;
7671    }
7672
7673    /**
7674     * Returns the default color from the TextView_textColor attribute
7675     * from the AttributeSet, if set, or the default color from the
7676     * TextAppearance_textColor from the TextView_textAppearance attribute,
7677     * if TextView_textColor was not set directly.
7678     */
7679    public static int getTextColor(Context context,
7680                                   TypedArray attrs,
7681                                   int def) {
7682        ColorStateList colors = getTextColors(context, attrs);
7683
7684        if (colors == null) {
7685            return def;
7686        } else {
7687            return colors.getDefaultColor();
7688        }
7689    }
7690
7691    @Override
7692    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
7693        final int filteredMetaState = event.getMetaState() & ~KeyEvent.META_CTRL_MASK;
7694        if (KeyEvent.metaStateHasNoModifiers(filteredMetaState)) {
7695            switch (keyCode) {
7696            case KeyEvent.KEYCODE_A:
7697                if (canSelectText()) {
7698                    return onTextContextMenuItem(ID_SELECT_ALL);
7699                }
7700                break;
7701            case KeyEvent.KEYCODE_X:
7702                if (canCut()) {
7703                    return onTextContextMenuItem(ID_CUT);
7704                }
7705                break;
7706            case KeyEvent.KEYCODE_C:
7707                if (canCopy()) {
7708                    return onTextContextMenuItem(ID_COPY);
7709                }
7710                break;
7711            case KeyEvent.KEYCODE_V:
7712                if (canPaste()) {
7713                    return onTextContextMenuItem(ID_PASTE);
7714                }
7715                break;
7716            }
7717        }
7718        return super.onKeyShortcut(keyCode, event);
7719    }
7720
7721    /**
7722     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
7723     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
7724     * a selection controller (see {@link #prepareCursorControllers()}), but this is not sufficient.
7725     */
7726    private boolean canSelectText() {
7727        return hasSelectionController() && mText.length() != 0;
7728    }
7729
7730    /**
7731     * Test based on the <i>intrinsic</i> charateristics of the TextView.
7732     * The text must be spannable and the movement method must allow for arbitary selection.
7733     *
7734     * See also {@link #canSelectText()}.
7735     */
7736    private boolean textCanBeSelected() {
7737        // prepareCursorController() relies on this method.
7738        // If you change this condition, make sure prepareCursorController is called anywhere
7739        // the value of this condition might be changed.
7740        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
7741        return isTextEditable() || (isTextSelectable() && mText instanceof Spannable && isEnabled());
7742    }
7743
7744    private boolean canCut() {
7745        if (hasPasswordTransformationMethod()) {
7746            return false;
7747        }
7748
7749        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null && getEditor().mKeyListener != null) {
7750            return true;
7751        }
7752
7753        return false;
7754    }
7755
7756    private boolean canCopy() {
7757        if (hasPasswordTransformationMethod()) {
7758            return false;
7759        }
7760
7761        if (mText.length() > 0 && hasSelection()) {
7762            return true;
7763        }
7764
7765        return false;
7766    }
7767
7768    private boolean canPaste() {
7769        return (mText instanceof Editable &&
7770                mEditor != null && getEditor().mKeyListener != null &&
7771                getSelectionStart() >= 0 &&
7772                getSelectionEnd() >= 0 &&
7773                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
7774                hasPrimaryClip());
7775    }
7776
7777    private boolean selectAll() {
7778        final int length = mText.length();
7779        Selection.setSelection((Spannable) mText, 0, length);
7780        return length > 0;
7781    }
7782
7783    /**
7784     * Adjusts selection to the word under last touch offset.
7785     * Return true if the operation was successfully performed.
7786     */
7787    private boolean selectCurrentWord() {
7788        if (!canSelectText()) {
7789            return false;
7790        }
7791
7792        if (hasPasswordTransformationMethod()) {
7793            // Always select all on a password field.
7794            // Cut/copy menu entries are not available for passwords, but being able to select all
7795            // is however useful to delete or paste to replace the entire content.
7796            return selectAll();
7797        }
7798
7799        int inputType = getInputType();
7800        int klass = inputType & InputType.TYPE_MASK_CLASS;
7801        int variation = inputType & InputType.TYPE_MASK_VARIATION;
7802
7803        // Specific text field types: select the entire text for these
7804        if (klass == InputType.TYPE_CLASS_NUMBER ||
7805                klass == InputType.TYPE_CLASS_PHONE ||
7806                klass == InputType.TYPE_CLASS_DATETIME ||
7807                variation == InputType.TYPE_TEXT_VARIATION_URI ||
7808                variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS ||
7809                variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS ||
7810                variation == InputType.TYPE_TEXT_VARIATION_FILTER) {
7811            return selectAll();
7812        }
7813
7814        long lastTouchOffsets = getLastTouchOffsets();
7815        final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets);
7816        final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets);
7817
7818        // Safety check in case standard touch event handling has been bypassed
7819        if (minOffset < 0 || minOffset >= mText.length()) return false;
7820        if (maxOffset < 0 || maxOffset >= mText.length()) return false;
7821
7822        int selectionStart, selectionEnd;
7823
7824        // If a URLSpan (web address, email, phone...) is found at that position, select it.
7825        URLSpan[] urlSpans = ((Spanned) mText).getSpans(minOffset, maxOffset, URLSpan.class);
7826        if (urlSpans.length >= 1) {
7827            URLSpan urlSpan = urlSpans[0];
7828            selectionStart = ((Spanned) mText).getSpanStart(urlSpan);
7829            selectionEnd = ((Spanned) mText).getSpanEnd(urlSpan);
7830        } else {
7831            final WordIterator wordIterator = getWordIterator();
7832            wordIterator.setCharSequence(mText, minOffset, maxOffset);
7833
7834            selectionStart = wordIterator.getBeginning(minOffset);
7835            selectionEnd = wordIterator.getEnd(maxOffset);
7836
7837            if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE ||
7838                    selectionStart == selectionEnd) {
7839                // Possible when the word iterator does not properly handle the text's language
7840                long range = getCharRange(minOffset);
7841                selectionStart = TextUtils.unpackRangeStartFromLong(range);
7842                selectionEnd = TextUtils.unpackRangeEndFromLong(range);
7843            }
7844        }
7845
7846        Selection.setSelection((Spannable) mText, selectionStart, selectionEnd);
7847        return selectionEnd > selectionStart;
7848    }
7849
7850    /**
7851     * This is a temporary method. Future versions may support multi-locale text.
7852     *
7853     * @return The locale that should be used for a word iterator and a spell checker
7854     * in this TextView, based on the current spell checker settings,
7855     * the current IME's locale, or the system default locale.
7856     * @hide
7857     */
7858    public Locale getTextServicesLocale() {
7859        Locale locale = Locale.getDefault();
7860        final TextServicesManager textServicesManager = (TextServicesManager)
7861                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
7862        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
7863        if (subtype != null) {
7864            locale = new Locale(subtype.getLocale());
7865        }
7866        return locale;
7867    }
7868
7869    void onLocaleChanged() {
7870        // Will be re-created on demand in getWordIterator with the proper new locale
7871        getEditor().mWordIterator = null;
7872    }
7873
7874    /**
7875     * @hide
7876     */
7877    public WordIterator getWordIterator() {
7878        if (getEditor().mWordIterator == null) {
7879            getEditor().mWordIterator = new WordIterator(getTextServicesLocale());
7880        }
7881        return getEditor().mWordIterator;
7882    }
7883
7884    private long getCharRange(int offset) {
7885        final int textLength = mText.length();
7886        if (offset + 1 < textLength) {
7887            final char currentChar = mText.charAt(offset);
7888            final char nextChar = mText.charAt(offset + 1);
7889            if (Character.isSurrogatePair(currentChar, nextChar)) {
7890                return TextUtils.packRangeInLong(offset,  offset + 2);
7891            }
7892        }
7893        if (offset < textLength) {
7894            return TextUtils.packRangeInLong(offset,  offset + 1);
7895        }
7896        if (offset - 2 >= 0) {
7897            final char previousChar = mText.charAt(offset - 1);
7898            final char previousPreviousChar = mText.charAt(offset - 2);
7899            if (Character.isSurrogatePair(previousPreviousChar, previousChar)) {
7900                return TextUtils.packRangeInLong(offset - 2,  offset);
7901            }
7902        }
7903        if (offset - 1 >= 0) {
7904            return TextUtils.packRangeInLong(offset - 1,  offset);
7905        }
7906        return TextUtils.packRangeInLong(offset,  offset);
7907    }
7908
7909    private long getLastTouchOffsets() {
7910        SelectionModifierCursorController selectionController = getSelectionController();
7911        final int minOffset = selectionController.getMinTouchOffset();
7912        final int maxOffset = selectionController.getMaxTouchOffset();
7913        return TextUtils.packRangeInLong(minOffset, maxOffset);
7914    }
7915
7916    @Override
7917    public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
7918        super.onPopulateAccessibilityEvent(event);
7919
7920        final boolean isPassword = hasPasswordTransformationMethod();
7921        if (!isPassword) {
7922            CharSequence text = getTextForAccessibility();
7923            if (!TextUtils.isEmpty(text)) {
7924                event.getText().add(text);
7925            }
7926        }
7927    }
7928
7929    @Override
7930    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
7931        super.onInitializeAccessibilityEvent(event);
7932
7933        event.setClassName(TextView.class.getName());
7934        final boolean isPassword = hasPasswordTransformationMethod();
7935        event.setPassword(isPassword);
7936
7937        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
7938            event.setFromIndex(Selection.getSelectionStart(mText));
7939            event.setToIndex(Selection.getSelectionEnd(mText));
7940            event.setItemCount(mText.length());
7941        }
7942    }
7943
7944    @Override
7945    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
7946        super.onInitializeAccessibilityNodeInfo(info);
7947
7948        info.setClassName(TextView.class.getName());
7949        final boolean isPassword = hasPasswordTransformationMethod();
7950        info.setPassword(isPassword);
7951
7952        if (!isPassword) {
7953            info.setText(getTextForAccessibility());
7954        }
7955    }
7956
7957    @Override
7958    public void sendAccessibilityEvent(int eventType) {
7959        // Do not send scroll events since first they are not interesting for
7960        // accessibility and second such events a generated too frequently.
7961        // For details see the implementation of bringTextIntoView().
7962        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
7963            return;
7964        }
7965        super.sendAccessibilityEvent(eventType);
7966    }
7967
7968    /**
7969     * Gets the text reported for accessibility purposes. It is the
7970     * text if not empty or the hint.
7971     *
7972     * @return The accessibility text.
7973     */
7974    private CharSequence getTextForAccessibility() {
7975        CharSequence text = getText();
7976        if (TextUtils.isEmpty(text)) {
7977            text = getHint();
7978        }
7979        return text;
7980    }
7981
7982    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
7983            int fromIndex, int removedCount, int addedCount) {
7984        AccessibilityEvent event =
7985            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
7986        event.setFromIndex(fromIndex);
7987        event.setRemovedCount(removedCount);
7988        event.setAddedCount(addedCount);
7989        event.setBeforeText(beforeText);
7990        sendAccessibilityEventUnchecked(event);
7991    }
7992
7993    /**
7994     * Returns whether this text view is a current input method target.  The
7995     * default implementation just checks with {@link InputMethodManager}.
7996     */
7997    public boolean isInputMethodTarget() {
7998        InputMethodManager imm = InputMethodManager.peekInstance();
7999        return imm != null && imm.isActive(this);
8000    }
8001
8002    // Selection context mode
8003    private static final int ID_SELECT_ALL = android.R.id.selectAll;
8004    private static final int ID_CUT = android.R.id.cut;
8005    private static final int ID_COPY = android.R.id.copy;
8006    private static final int ID_PASTE = android.R.id.paste;
8007
8008    /**
8009     * Called when a context menu option for the text view is selected.  Currently
8010     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
8011     * {@link android.R.id#copy} or {@link android.R.id#paste}.
8012     *
8013     * @return true if the context menu item action was performed.
8014     */
8015    public boolean onTextContextMenuItem(int id) {
8016        int min = 0;
8017        int max = mText.length();
8018
8019        if (isFocused()) {
8020            final int selStart = getSelectionStart();
8021            final int selEnd = getSelectionEnd();
8022
8023            min = Math.max(0, Math.min(selStart, selEnd));
8024            max = Math.max(0, Math.max(selStart, selEnd));
8025        }
8026
8027        switch (id) {
8028            case ID_SELECT_ALL:
8029                // This does not enter text selection mode. Text is highlighted, so that it can be
8030                // bulk edited, like selectAllOnFocus does. Returns true even if text is empty.
8031                selectAll();
8032                return true;
8033
8034            case ID_PASTE:
8035                paste(min, max);
8036                return true;
8037
8038            case ID_CUT:
8039                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
8040                deleteText_internal(min, max);
8041                stopSelectionActionMode();
8042                return true;
8043
8044            case ID_COPY:
8045                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
8046                stopSelectionActionMode();
8047                return true;
8048        }
8049        return false;
8050    }
8051
8052    private CharSequence getTransformedText(int start, int end) {
8053        return removeSuggestionSpans(mTransformed.subSequence(start, end));
8054    }
8055
8056    /**
8057     * Prepare text so that there are not zero or two spaces at beginning and end of region defined
8058     * by [min, max] when replacing this region by paste.
8059     * Note that if there were two spaces (or more) at that position before, they are kept. We just
8060     * make sure we do not add an extra one from the paste content.
8061     */
8062    private long prepareSpacesAroundPaste(int min, int max, CharSequence paste) {
8063        if (paste.length() > 0) {
8064            if (min > 0) {
8065                final char charBefore = mTransformed.charAt(min - 1);
8066                final char charAfter = paste.charAt(0);
8067
8068                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8069                    // Two spaces at beginning of paste: remove one
8070                    final int originalLength = mText.length();
8071                    deleteText_internal(min - 1, min);
8072                    // Due to filters, there is no guarantee that exactly one character was
8073                    // removed: count instead.
8074                    final int delta = mText.length() - originalLength;
8075                    min += delta;
8076                    max += delta;
8077                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8078                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8079                    // No space at beginning of paste: add one
8080                    final int originalLength = mText.length();
8081                    replaceText_internal(min, min, " ");
8082                    // Taking possible filters into account as above.
8083                    final int delta = mText.length() - originalLength;
8084                    min += delta;
8085                    max += delta;
8086                }
8087            }
8088
8089            if (max < mText.length()) {
8090                final char charBefore = paste.charAt(paste.length() - 1);
8091                final char charAfter = mTransformed.charAt(max);
8092
8093                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8094                    // Two spaces at end of paste: remove one
8095                    deleteText_internal(max, max + 1);
8096                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8097                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8098                    // No space at end of paste: add one
8099                    replaceText_internal(max, max, " ");
8100                }
8101            }
8102        }
8103
8104        return TextUtils.packRangeInLong(min, max);
8105    }
8106
8107    private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) {
8108        TextView shadowView = (TextView) inflate(mContext,
8109                com.android.internal.R.layout.text_drag_thumbnail, null);
8110
8111        if (shadowView == null) {
8112            throw new IllegalArgumentException("Unable to inflate text drag thumbnail");
8113        }
8114
8115        if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) {
8116            text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH);
8117        }
8118        shadowView.setText(text);
8119        shadowView.setTextColor(getTextColors());
8120
8121        shadowView.setTextAppearance(mContext, R.styleable.Theme_textAppearanceLarge);
8122        shadowView.setGravity(Gravity.CENTER);
8123
8124        shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
8125                ViewGroup.LayoutParams.WRAP_CONTENT));
8126
8127        final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
8128        shadowView.measure(size, size);
8129
8130        shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight());
8131        shadowView.invalidate();
8132        return new DragShadowBuilder(shadowView);
8133    }
8134
8135    @Override
8136    public boolean performLongClick() {
8137        boolean handled = false;
8138
8139        if (super.performLongClick()) {
8140            handled = true;
8141        }
8142
8143        if (mEditor == null) {
8144            return handled;
8145        }
8146
8147        // Long press in empty space moves cursor and shows the Paste affordance if available.
8148        if (!handled && !isPositionOnText(getEditor().mLastDownPositionX, getEditor().mLastDownPositionY) &&
8149                getEditor().mInsertionControllerEnabled) {
8150            final int offset = getOffsetForPosition(getEditor().mLastDownPositionX, getEditor().mLastDownPositionY);
8151            stopSelectionActionMode();
8152            Selection.setSelection((Spannable) mText, offset);
8153            getInsertionController().showWithActionPopup();
8154            handled = true;
8155        }
8156
8157        if (!handled && getEditor().mSelectionActionMode != null) {
8158            if (touchPositionIsInSelection()) {
8159                // Start a drag
8160                final int start = getSelectionStart();
8161                final int end = getSelectionEnd();
8162                CharSequence selectedText = getTransformedText(start, end);
8163                ClipData data = ClipData.newPlainText(null, selectedText);
8164                DragLocalState localState = new DragLocalState(this, start, end);
8165                startDrag(data, getTextThumbnailBuilder(selectedText), localState, 0);
8166                stopSelectionActionMode();
8167            } else {
8168                getSelectionController().hide();
8169                selectCurrentWord();
8170                getSelectionController().show();
8171            }
8172            handled = true;
8173        }
8174
8175        // Start a new selection
8176        if (!handled) {
8177            handled = startSelectionActionMode();
8178        }
8179
8180        if (handled) {
8181            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
8182            getEditor().mDiscardNextActionUp = true;
8183        }
8184
8185        return handled;
8186    }
8187
8188    private boolean touchPositionIsInSelection() {
8189        int selectionStart = getSelectionStart();
8190        int selectionEnd = getSelectionEnd();
8191
8192        if (selectionStart == selectionEnd) {
8193            return false;
8194        }
8195
8196        if (selectionStart > selectionEnd) {
8197            int tmp = selectionStart;
8198            selectionStart = selectionEnd;
8199            selectionEnd = tmp;
8200            Selection.setSelection((Spannable) mText, selectionStart, selectionEnd);
8201        }
8202
8203        SelectionModifierCursorController selectionController = getSelectionController();
8204        int minOffset = selectionController.getMinTouchOffset();
8205        int maxOffset = selectionController.getMaxTouchOffset();
8206
8207        return ((minOffset >= selectionStart) && (maxOffset < selectionEnd));
8208    }
8209
8210    private PositionListener getPositionListener() {
8211        if (getEditor().mPositionListener == null) {
8212            getEditor().mPositionListener = new PositionListener();
8213        }
8214        return getEditor().mPositionListener;
8215    }
8216
8217    private interface TextViewPositionListener {
8218        public void updatePosition(int parentPositionX, int parentPositionY,
8219                boolean parentPositionChanged, boolean parentScrolled);
8220    }
8221
8222    private boolean isPositionVisible(int positionX, int positionY) {
8223        synchronized (TEMP_POSITION) {
8224            final float[] position = TEMP_POSITION;
8225            position[0] = positionX;
8226            position[1] = positionY;
8227            View view = this;
8228
8229            while (view != null) {
8230                if (view != this) {
8231                    // Local scroll is already taken into account in positionX/Y
8232                    position[0] -= view.getScrollX();
8233                    position[1] -= view.getScrollY();
8234                }
8235
8236                if (position[0] < 0 || position[1] < 0 ||
8237                        position[0] > view.getWidth() || position[1] > view.getHeight()) {
8238                    return false;
8239                }
8240
8241                if (!view.getMatrix().isIdentity()) {
8242                    view.getMatrix().mapPoints(position);
8243                }
8244
8245                position[0] += view.getLeft();
8246                position[1] += view.getTop();
8247
8248                final ViewParent parent = view.getParent();
8249                if (parent instanceof View) {
8250                    view = (View) parent;
8251                } else {
8252                    // We've reached the ViewRoot, stop iterating
8253                    view = null;
8254                }
8255            }
8256        }
8257
8258        // We've been able to walk up the view hierarchy and the position was never clipped
8259        return true;
8260    }
8261
8262    private boolean isOffsetVisible(int offset) {
8263        final int line = mLayout.getLineForOffset(offset);
8264        final int lineBottom = mLayout.getLineBottom(line);
8265        final int primaryHorizontal = (int) mLayout.getPrimaryHorizontal(offset);
8266        return isPositionVisible(primaryHorizontal + viewportToContentHorizontalOffset(),
8267                lineBottom + viewportToContentVerticalOffset());
8268    }
8269
8270    @Override
8271    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
8272        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
8273        if (mEditor != null) {
8274            if (getEditor().mPositionListener != null) {
8275                getEditor().mPositionListener.onScrollChanged();
8276            }
8277            getEditor().invalidateTextDisplayList();
8278        }
8279    }
8280
8281    /**
8282     * Removes the suggestion spans.
8283     */
8284    CharSequence removeSuggestionSpans(CharSequence text) {
8285       if (text instanceof Spanned) {
8286           Spannable spannable;
8287           if (text instanceof Spannable) {
8288               spannable = (Spannable) text;
8289           } else {
8290               spannable = new SpannableString(text);
8291               text = spannable;
8292           }
8293
8294           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
8295           for (int i = 0; i < spans.length; i++) {
8296               spannable.removeSpan(spans[i]);
8297           }
8298       }
8299       return text;
8300    }
8301
8302    void showSuggestions() {
8303        if (getEditor().mSuggestionsPopupWindow == null) {
8304            getEditor().mSuggestionsPopupWindow = new SuggestionsPopupWindow();
8305        }
8306        hideControllers();
8307        getEditor().mSuggestionsPopupWindow.show();
8308    }
8309
8310    boolean areSuggestionsShown() {
8311        return getEditor().mSuggestionsPopupWindow != null && getEditor().mSuggestionsPopupWindow.isShowing();
8312    }
8313
8314    /**
8315     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
8316     * by the IME or by the spell checker as the user types. This is done by adding
8317     * {@link SuggestionSpan}s to the text.
8318     *
8319     * When suggestions are enabled (default), this list of suggestions will be displayed when the
8320     * user asks for them on these parts of the text. This value depends on the inputType of this
8321     * TextView.
8322     *
8323     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
8324     *
8325     * In addition, the type variation must be one of
8326     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
8327     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
8328     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
8329     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
8330     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
8331     *
8332     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
8333     *
8334     * @return true if the suggestions popup window is enabled, based on the inputType.
8335     */
8336    public boolean isSuggestionsEnabled() {
8337        if (mEditor == null) return false;
8338        if ((getEditor().mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) return false;
8339        if ((getEditor().mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
8340
8341        final int variation = getEditor().mInputType & EditorInfo.TYPE_MASK_VARIATION;
8342        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
8343                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
8344                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
8345                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
8346                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
8347    }
8348
8349    /**
8350     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
8351     * selection is initiated in this View.
8352     *
8353     * The standard implementation populates the menu with a subset of Select All, Cut, Copy and
8354     * Paste actions, depending on what this View supports.
8355     *
8356     * A custom implementation can add new entries in the default menu in its
8357     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The
8358     * default actions can also be removed from the menu using {@link Menu#removeItem(int)} and
8359     * passing {@link android.R.id#selectAll}, {@link android.R.id#cut}, {@link android.R.id#copy}
8360     * or {@link android.R.id#paste} ids as parameters.
8361     *
8362     * Returning false from
8363     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will prevent
8364     * the action mode from being started.
8365     *
8366     * Action click events should be handled by the custom implementation of
8367     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
8368     *
8369     * Note that text selection mode is not started when a TextView receives focus and the
8370     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
8371     * that case, to allow for quick replacement.
8372     */
8373    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
8374        createEditorIfNeeded("custom selection action mode set");
8375        getEditor().mCustomSelectionActionModeCallback = actionModeCallback;
8376    }
8377
8378    /**
8379     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
8380     *
8381     * @return The current custom selection callback.
8382     */
8383    public ActionMode.Callback getCustomSelectionActionModeCallback() {
8384        return mEditor == null ? null : getEditor().mCustomSelectionActionModeCallback;
8385    }
8386
8387    /**
8388     *
8389     * @return true if the selection mode was actually started.
8390     */
8391    private boolean startSelectionActionMode() {
8392        if (getEditor().mSelectionActionMode != null) {
8393            // Selection action mode is already started
8394            return false;
8395        }
8396
8397        if (!canSelectText() || !requestFocus()) {
8398            Log.w(LOG_TAG, "TextView does not support text selection. Action mode cancelled.");
8399            return false;
8400        }
8401
8402        if (!hasSelection()) {
8403            // There may already be a selection on device rotation
8404            if (!selectCurrentWord()) {
8405                // No word found under cursor or text selection not permitted.
8406                return false;
8407            }
8408        }
8409
8410        boolean willExtract = extractedTextModeWillBeStarted();
8411
8412        // Do not start the action mode when extracted text will show up full screen, which would
8413        // immediately hide the newly created action bar and would be visually distracting.
8414        if (!willExtract) {
8415            ActionMode.Callback actionModeCallback = new SelectionActionModeCallback();
8416            getEditor().mSelectionActionMode = startActionMode(actionModeCallback);
8417        }
8418
8419        final boolean selectionStarted = getEditor().mSelectionActionMode != null || willExtract;
8420        if (selectionStarted && !isTextSelectable()) {
8421            // Show the IME to be able to replace text, except when selecting non editable text.
8422            final InputMethodManager imm = InputMethodManager.peekInstance();
8423            if (imm != null) {
8424                imm.showSoftInput(this, 0, null);
8425            }
8426        }
8427
8428        return selectionStarted;
8429    }
8430
8431    private boolean extractedTextModeWillBeStarted() {
8432        if (!(this instanceof ExtractEditText)) {
8433            final InputMethodManager imm = InputMethodManager.peekInstance();
8434            return  imm != null && imm.isFullscreenMode();
8435        }
8436        return false;
8437    }
8438
8439    /**
8440     * @hide
8441     */
8442    protected void stopSelectionActionMode() {
8443        if (getEditor().mSelectionActionMode != null) {
8444            // This will hide the mSelectionModifierCursorController
8445            getEditor().mSelectionActionMode.finish();
8446        }
8447    }
8448
8449    /**
8450     * Paste clipboard content between min and max positions.
8451     */
8452    private void paste(int min, int max) {
8453        ClipboardManager clipboard =
8454            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
8455        ClipData clip = clipboard.getPrimaryClip();
8456        if (clip != null) {
8457            boolean didFirst = false;
8458            for (int i=0; i<clip.getItemCount(); i++) {
8459                CharSequence paste = clip.getItemAt(i).coerceToText(getContext());
8460                if (paste != null) {
8461                    if (!didFirst) {
8462                        long minMax = prepareSpacesAroundPaste(min, max, paste);
8463                        min = TextUtils.unpackRangeStartFromLong(minMax);
8464                        max = TextUtils.unpackRangeEndFromLong(minMax);
8465                        Selection.setSelection((Spannable) mText, max);
8466                        ((Editable) mText).replace(min, max, paste);
8467                        didFirst = true;
8468                    } else {
8469                        ((Editable) mText).insert(getSelectionEnd(), "\n");
8470                        ((Editable) mText).insert(getSelectionEnd(), paste);
8471                    }
8472                }
8473            }
8474            stopSelectionActionMode();
8475            LAST_CUT_OR_COPY_TIME = 0;
8476        }
8477    }
8478
8479    private void setPrimaryClip(ClipData clip) {
8480        ClipboardManager clipboard = (ClipboardManager) getContext().
8481                getSystemService(Context.CLIPBOARD_SERVICE);
8482        clipboard.setPrimaryClip(clip);
8483        LAST_CUT_OR_COPY_TIME = SystemClock.uptimeMillis();
8484    }
8485
8486    private void hideInsertionPointCursorController() {
8487        // No need to create the controller to hide it.
8488        if (getEditor().mInsertionPointCursorController != null) {
8489            getEditor().mInsertionPointCursorController.hide();
8490        }
8491    }
8492
8493    /**
8494     * Hides the insertion controller and stops text selection mode, hiding the selection controller
8495     */
8496    private void hideControllers() {
8497        hideCursorControllers();
8498        hideSpanControllers();
8499    }
8500
8501    private void hideSpanControllers() {
8502        if (mChangeWatcher != null) {
8503            mChangeWatcher.hideControllers();
8504        }
8505    }
8506
8507    private void hideCursorControllers() {
8508        if (getEditor().mSuggestionsPopupWindow != null && !getEditor().mSuggestionsPopupWindow.isShowingUp()) {
8509            // Should be done before hide insertion point controller since it triggers a show of it
8510            getEditor().mSuggestionsPopupWindow.hide();
8511        }
8512        hideInsertionPointCursorController();
8513        stopSelectionActionMode();
8514    }
8515
8516    /**
8517     * Get the character offset closest to the specified absolute position. A typical use case is to
8518     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
8519     *
8520     * @param x The horizontal absolute position of a point on screen
8521     * @param y The vertical absolute position of a point on screen
8522     * @return the character offset for the character whose position is closest to the specified
8523     *  position. Returns -1 if there is no layout.
8524     */
8525    public int getOffsetForPosition(float x, float y) {
8526        if (getLayout() == null) return -1;
8527        final int line = getLineAtCoordinate(y);
8528        final int offset = getOffsetAtCoordinate(line, x);
8529        return offset;
8530    }
8531
8532    private float convertToLocalHorizontalCoordinate(float x) {
8533        x -= getTotalPaddingLeft();
8534        // Clamp the position to inside of the view.
8535        x = Math.max(0.0f, x);
8536        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
8537        x += getScrollX();
8538        return x;
8539    }
8540
8541    private int getLineAtCoordinate(float y) {
8542        y -= getTotalPaddingTop();
8543        // Clamp the position to inside of the view.
8544        y = Math.max(0.0f, y);
8545        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
8546        y += getScrollY();
8547        return getLayout().getLineForVertical((int) y);
8548    }
8549
8550    private int getOffsetAtCoordinate(int line, float x) {
8551        x = convertToLocalHorizontalCoordinate(x);
8552        return getLayout().getOffsetForHorizontal(line, x);
8553    }
8554
8555    /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed
8556     * in the view. Returns false when the position is in the empty space of left/right of text.
8557     */
8558    private boolean isPositionOnText(float x, float y) {
8559        if (getLayout() == null) return false;
8560
8561        final int line = getLineAtCoordinate(y);
8562        x = convertToLocalHorizontalCoordinate(x);
8563
8564        if (x < getLayout().getLineLeft(line)) return false;
8565        if (x > getLayout().getLineRight(line)) return false;
8566        return true;
8567    }
8568
8569    @Override
8570    public boolean onDragEvent(DragEvent event) {
8571        switch (event.getAction()) {
8572            case DragEvent.ACTION_DRAG_STARTED:
8573                return mEditor != null && hasInsertionController();
8574
8575            case DragEvent.ACTION_DRAG_ENTERED:
8576                TextView.this.requestFocus();
8577                return true;
8578
8579            case DragEvent.ACTION_DRAG_LOCATION:
8580                final int offset = getOffsetForPosition(event.getX(), event.getY());
8581                Selection.setSelection((Spannable)mText, offset);
8582                return true;
8583
8584            case DragEvent.ACTION_DROP:
8585                onDrop(event);
8586                return true;
8587
8588            case DragEvent.ACTION_DRAG_ENDED:
8589            case DragEvent.ACTION_DRAG_EXITED:
8590            default:
8591                return true;
8592        }
8593    }
8594
8595    private void onDrop(DragEvent event) {
8596        StringBuilder content = new StringBuilder("");
8597        ClipData clipData = event.getClipData();
8598        final int itemCount = clipData.getItemCount();
8599        for (int i=0; i < itemCount; i++) {
8600            Item item = clipData.getItemAt(i);
8601            content.append(item.coerceToText(TextView.this.mContext));
8602        }
8603
8604        final int offset = getOffsetForPosition(event.getX(), event.getY());
8605
8606        Object localState = event.getLocalState();
8607        DragLocalState dragLocalState = null;
8608        if (localState instanceof DragLocalState) {
8609            dragLocalState = (DragLocalState) localState;
8610        }
8611        boolean dragDropIntoItself = dragLocalState != null &&
8612                dragLocalState.sourceTextView == this;
8613
8614        if (dragDropIntoItself) {
8615            if (offset >= dragLocalState.start && offset < dragLocalState.end) {
8616                // A drop inside the original selection discards the drop.
8617                return;
8618            }
8619        }
8620
8621        final int originalLength = mText.length();
8622        long minMax = prepareSpacesAroundPaste(offset, offset, content);
8623        int min = TextUtils.unpackRangeStartFromLong(minMax);
8624        int max = TextUtils.unpackRangeEndFromLong(minMax);
8625
8626        Selection.setSelection((Spannable) mText, max);
8627        replaceText_internal(min, max, content);
8628
8629        if (dragDropIntoItself) {
8630            int dragSourceStart = dragLocalState.start;
8631            int dragSourceEnd = dragLocalState.end;
8632            if (max <= dragSourceStart) {
8633                // Inserting text before selection has shifted positions
8634                final int shift = mText.length() - originalLength;
8635                dragSourceStart += shift;
8636                dragSourceEnd += shift;
8637            }
8638
8639            // Delete original selection
8640            deleteText_internal(dragSourceStart, dragSourceEnd);
8641
8642            // Make sure we do not leave two adjacent spaces.
8643            if ((dragSourceStart == 0 ||
8644                    Character.isSpaceChar(mTransformed.charAt(dragSourceStart - 1))) &&
8645                    (dragSourceStart == mText.length() ||
8646                    Character.isSpaceChar(mTransformed.charAt(dragSourceStart)))) {
8647                final int pos = dragSourceStart == mText.length() ?
8648                        dragSourceStart - 1 : dragSourceStart;
8649                deleteText_internal(pos, pos + 1);
8650            }
8651        }
8652    }
8653
8654    /**
8655     * @return True if this view supports insertion handles.
8656     */
8657    boolean hasInsertionController() {
8658        return getEditor().mInsertionControllerEnabled;
8659    }
8660
8661    /**
8662     * @return True if this view supports selection handles.
8663     */
8664    boolean hasSelectionController() {
8665        return getEditor().mSelectionControllerEnabled;
8666    }
8667
8668    InsertionPointCursorController getInsertionController() {
8669        if (!getEditor().mInsertionControllerEnabled) {
8670            return null;
8671        }
8672
8673        if (getEditor().mInsertionPointCursorController == null) {
8674            getEditor().mInsertionPointCursorController = new InsertionPointCursorController();
8675
8676            final ViewTreeObserver observer = getViewTreeObserver();
8677            observer.addOnTouchModeChangeListener(getEditor().mInsertionPointCursorController);
8678        }
8679
8680        return getEditor().mInsertionPointCursorController;
8681    }
8682
8683    SelectionModifierCursorController getSelectionController() {
8684        if (!getEditor().mSelectionControllerEnabled) {
8685            return null;
8686        }
8687
8688        if (getEditor().mSelectionModifierCursorController == null) {
8689            getEditor().mSelectionModifierCursorController = new SelectionModifierCursorController();
8690
8691            final ViewTreeObserver observer = getViewTreeObserver();
8692            observer.addOnTouchModeChangeListener(getEditor().mSelectionModifierCursorController);
8693        }
8694
8695        return getEditor().mSelectionModifierCursorController;
8696    }
8697
8698    boolean isInBatchEditMode() {
8699        if (mEditor == null) return false;
8700        final InputMethodState ims = getEditor().mInputMethodState;
8701        if (ims != null) {
8702            return ims.mBatchEditNesting > 0;
8703        }
8704        return getEditor().mInBatchEditControllers;
8705    }
8706
8707    @Override
8708    public void onResolvedTextDirectionChanged() {
8709        if (hasPasswordTransformationMethod()) {
8710            // TODO: take care of the content direction to show the password text and dots justified
8711            // to the left or to the right
8712            mTextDir = TextDirectionHeuristics.LOCALE;
8713            return;
8714        }
8715
8716        // Always need to resolve layout direction first
8717        final boolean defaultIsRtl = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL);
8718
8719        // Now, we can select the heuristic
8720        int textDir = getResolvedTextDirection();
8721        switch (textDir) {
8722            default:
8723            case TEXT_DIRECTION_FIRST_STRONG:
8724                mTextDir = (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
8725                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
8726                break;
8727            case TEXT_DIRECTION_ANY_RTL:
8728                mTextDir = TextDirectionHeuristics.ANYRTL_LTR;
8729                break;
8730            case TEXT_DIRECTION_LTR:
8731                mTextDir = TextDirectionHeuristics.LTR;
8732                break;
8733            case TEXT_DIRECTION_RTL:
8734                mTextDir = TextDirectionHeuristics.RTL;
8735                break;
8736            case TEXT_DIRECTION_LOCALE:
8737                mTextDir = TextDirectionHeuristics.LOCALE;
8738                break;
8739        }
8740    }
8741
8742    /**
8743     * Subclasses will need to override this method to implement their own way of resolving
8744     * drawables depending on the layout direction.
8745     *
8746     * A call to the super method will be required from the subclasses implementation.
8747     */
8748    protected void resolveDrawables() {
8749        // No need to resolve twice
8750        if (mResolvedDrawables) {
8751            return;
8752        }
8753        // No drawable to resolve
8754        if (mDrawables == null) {
8755            return;
8756        }
8757        // No relative drawable to resolve
8758        if (mDrawables.mDrawableStart == null && mDrawables.mDrawableEnd == null) {
8759            mResolvedDrawables = true;
8760            return;
8761        }
8762
8763        Drawables dr = mDrawables;
8764        switch(getResolvedLayoutDirection()) {
8765            case LAYOUT_DIRECTION_RTL:
8766                if (dr.mDrawableStart != null) {
8767                    dr.mDrawableRight = dr.mDrawableStart;
8768
8769                    dr.mDrawableSizeRight = dr.mDrawableSizeStart;
8770                    dr.mDrawableHeightRight = dr.mDrawableHeightStart;
8771                }
8772                if (dr.mDrawableEnd != null) {
8773                    dr.mDrawableLeft = dr.mDrawableEnd;
8774
8775                    dr.mDrawableSizeLeft = dr.mDrawableSizeEnd;
8776                    dr.mDrawableHeightLeft = dr.mDrawableHeightEnd;
8777                }
8778                break;
8779
8780            case LAYOUT_DIRECTION_LTR:
8781            default:
8782                if (dr.mDrawableStart != null) {
8783                    dr.mDrawableLeft = dr.mDrawableStart;
8784
8785                    dr.mDrawableSizeLeft = dr.mDrawableSizeStart;
8786                    dr.mDrawableHeightLeft = dr.mDrawableHeightStart;
8787                }
8788                if (dr.mDrawableEnd != null) {
8789                    dr.mDrawableRight = dr.mDrawableEnd;
8790
8791                    dr.mDrawableSizeRight = dr.mDrawableSizeEnd;
8792                    dr.mDrawableHeightRight = dr.mDrawableHeightEnd;
8793                }
8794                break;
8795        }
8796        mResolvedDrawables = true;
8797    }
8798
8799    protected void resetResolvedDrawables() {
8800        mResolvedDrawables = false;
8801    }
8802
8803    /**
8804     * @hide
8805     */
8806    protected void viewClicked(InputMethodManager imm) {
8807        if (imm != null) {
8808            imm.viewClicked(this);
8809        }
8810    }
8811
8812    /**
8813     * Deletes the range of text [start, end[.
8814     * @hide
8815     */
8816    protected void deleteText_internal(int start, int end) {
8817        ((Editable) mText).delete(start, end);
8818    }
8819
8820    /**
8821     * Replaces the range of text [start, end[ by replacement text
8822     * @hide
8823     */
8824    protected void replaceText_internal(int start, int end, CharSequence text) {
8825        ((Editable) mText).replace(start, end, text);
8826    }
8827
8828    /**
8829     * Sets a span on the specified range of text
8830     * @hide
8831     */
8832    protected void setSpan_internal(Object span, int start, int end, int flags) {
8833        ((Editable) mText).setSpan(span, start, end, flags);
8834    }
8835
8836    /**
8837     * Moves the cursor to the specified offset position in text
8838     * @hide
8839     */
8840    protected void setCursorPosition_internal(int start, int end) {
8841        Selection.setSelection(((Editable) mText), start, end);
8842    }
8843
8844    /**
8845     * An Editor should be created as soon as any of the editable-specific fields (grouped
8846     * inside the Editor object) is assigned to a non-default value.
8847     * This method will create the Editor if needed.
8848     *
8849     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
8850     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
8851     * Editor for backward compatibility, as soon as one of these fields is assigned.
8852     *
8853     * Also note that for performance reasons, the mEditor is created when needed, but not
8854     * reset when no more edit-specific fields are needed.
8855     */
8856    private void createEditorIfNeeded(String reason) {
8857        if (mEditor == null) {
8858            if (!(this instanceof EditText)) {
8859                Log.e(LOG_TAG + " EDITOR", "Creating Editor on TextView. " + reason);
8860            }
8861            mEditor = new Editor();
8862        } else {
8863            if (!(this instanceof EditText)) {
8864                Log.d(LOG_TAG + " EDITOR", "Redundant Editor creation. " + reason);
8865            }
8866        }
8867    }
8868
8869    private Editor getEditor() {
8870        if (mEditor == null) {
8871            //createEditorIfNeeded("Problem: mEditor is not initialized!");
8872            Log.e(LOG_TAG, "mEditor not initialized. Please send a bug report to debunne@");
8873        }
8874        return mEditor;
8875    }
8876
8877    /**
8878     * User interface state that is stored by TextView for implementing
8879     * {@link View#onSaveInstanceState}.
8880     */
8881    public static class SavedState extends BaseSavedState {
8882        int selStart;
8883        int selEnd;
8884        CharSequence text;
8885        boolean frozenWithFocus;
8886        CharSequence error;
8887
8888        SavedState(Parcelable superState) {
8889            super(superState);
8890        }
8891
8892        @Override
8893        public void writeToParcel(Parcel out, int flags) {
8894            super.writeToParcel(out, flags);
8895            out.writeInt(selStart);
8896            out.writeInt(selEnd);
8897            out.writeInt(frozenWithFocus ? 1 : 0);
8898            TextUtils.writeToParcel(text, out, flags);
8899
8900            if (error == null) {
8901                out.writeInt(0);
8902            } else {
8903                out.writeInt(1);
8904                TextUtils.writeToParcel(error, out, flags);
8905            }
8906        }
8907
8908        @Override
8909        public String toString() {
8910            String str = "TextView.SavedState{"
8911                    + Integer.toHexString(System.identityHashCode(this))
8912                    + " start=" + selStart + " end=" + selEnd;
8913            if (text != null) {
8914                str += " text=" + text;
8915            }
8916            return str + "}";
8917        }
8918
8919        @SuppressWarnings("hiding")
8920        public static final Parcelable.Creator<SavedState> CREATOR
8921                = new Parcelable.Creator<SavedState>() {
8922            public SavedState createFromParcel(Parcel in) {
8923                return new SavedState(in);
8924            }
8925
8926            public SavedState[] newArray(int size) {
8927                return new SavedState[size];
8928            }
8929        };
8930
8931        private SavedState(Parcel in) {
8932            super(in);
8933            selStart = in.readInt();
8934            selEnd = in.readInt();
8935            frozenWithFocus = (in.readInt() != 0);
8936            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8937
8938            if (in.readInt() != 0) {
8939                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8940            }
8941        }
8942    }
8943
8944    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
8945        private char[] mChars;
8946        private int mStart, mLength;
8947
8948        public CharWrapper(char[] chars, int start, int len) {
8949            mChars = chars;
8950            mStart = start;
8951            mLength = len;
8952        }
8953
8954        /* package */ void set(char[] chars, int start, int len) {
8955            mChars = chars;
8956            mStart = start;
8957            mLength = len;
8958        }
8959
8960        public int length() {
8961            return mLength;
8962        }
8963
8964        public char charAt(int off) {
8965            return mChars[off + mStart];
8966        }
8967
8968        @Override
8969        public String toString() {
8970            return new String(mChars, mStart, mLength);
8971        }
8972
8973        public CharSequence subSequence(int start, int end) {
8974            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8975                throw new IndexOutOfBoundsException(start + ", " + end);
8976            }
8977
8978            return new String(mChars, start + mStart, end - start);
8979        }
8980
8981        public void getChars(int start, int end, char[] buf, int off) {
8982            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8983                throw new IndexOutOfBoundsException(start + ", " + end);
8984            }
8985
8986            System.arraycopy(mChars, start + mStart, buf, off, end - start);
8987        }
8988
8989        public void drawText(Canvas c, int start, int end,
8990                             float x, float y, Paint p) {
8991            c.drawText(mChars, start + mStart, end - start, x, y, p);
8992        }
8993
8994        public void drawTextRun(Canvas c, int start, int end,
8995                int contextStart, int contextEnd, float x, float y, int flags, Paint p) {
8996            int count = end - start;
8997            int contextCount = contextEnd - contextStart;
8998            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
8999                    contextCount, x, y, flags, p);
9000        }
9001
9002        public float measureText(int start, int end, Paint p) {
9003            return p.measureText(mChars, start + mStart, end - start);
9004        }
9005
9006        public int getTextWidths(int start, int end, float[] widths, Paint p) {
9007            return p.getTextWidths(mChars, start + mStart, end - start, widths);
9008        }
9009
9010        public float getTextRunAdvances(int start, int end, int contextStart,
9011                int contextEnd, int flags, float[] advances, int advancesIndex,
9012                Paint p) {
9013            int count = end - start;
9014            int contextCount = contextEnd - contextStart;
9015            return p.getTextRunAdvances(mChars, start + mStart, count,
9016                    contextStart + mStart, contextCount, flags, advances,
9017                    advancesIndex);
9018        }
9019
9020        public float getTextRunAdvances(int start, int end, int contextStart,
9021                int contextEnd, int flags, float[] advances, int advancesIndex,
9022                Paint p, int reserved) {
9023            int count = end - start;
9024            int contextCount = contextEnd - contextStart;
9025            return p.getTextRunAdvances(mChars, start + mStart, count,
9026                    contextStart + mStart, contextCount, flags, advances,
9027                    advancesIndex, reserved);
9028        }
9029
9030        public int getTextRunCursor(int contextStart, int contextEnd, int flags,
9031                int offset, int cursorOpt, Paint p) {
9032            int contextCount = contextEnd - contextStart;
9033            return p.getTextRunCursor(mChars, contextStart + mStart,
9034                    contextCount, flags, offset + mStart, cursorOpt);
9035        }
9036    }
9037
9038    private static class ErrorPopup extends PopupWindow {
9039        private boolean mAbove = false;
9040        private final TextView mView;
9041        private int mPopupInlineErrorBackgroundId = 0;
9042        private int mPopupInlineErrorAboveBackgroundId = 0;
9043
9044        ErrorPopup(TextView v, int width, int height) {
9045            super(v, width, height);
9046            mView = v;
9047            // Make sure the TextView has a background set as it will be used the first time it is
9048            // shown and positionned. Initialized with below background, which should have
9049            // dimensions identical to the above version for this to work (and is more likely).
9050            mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId,
9051                    com.android.internal.R.styleable.Theme_errorMessageBackground);
9052            mView.setBackgroundResource(mPopupInlineErrorBackgroundId);
9053        }
9054
9055        void fixDirection(boolean above) {
9056            mAbove = above;
9057
9058            if (above) {
9059                mPopupInlineErrorAboveBackgroundId =
9060                    getResourceId(mPopupInlineErrorAboveBackgroundId,
9061                            com.android.internal.R.styleable.Theme_errorMessageAboveBackground);
9062            } else {
9063                mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId,
9064                        com.android.internal.R.styleable.Theme_errorMessageBackground);
9065            }
9066
9067            mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId :
9068                mPopupInlineErrorBackgroundId);
9069        }
9070
9071        private int getResourceId(int currentId, int index) {
9072            if (currentId == 0) {
9073                TypedArray styledAttributes = mView.getContext().obtainStyledAttributes(
9074                        R.styleable.Theme);
9075                currentId = styledAttributes.getResourceId(index, 0);
9076                styledAttributes.recycle();
9077            }
9078            return currentId;
9079        }
9080
9081        @Override
9082        public void update(int x, int y, int w, int h, boolean force) {
9083            super.update(x, y, w, h, force);
9084
9085            boolean above = isAboveAnchor();
9086            if (above != mAbove) {
9087                fixDirection(above);
9088            }
9089        }
9090    }
9091
9092    private class CorrectionHighlighter {
9093        private final Path mPath = new Path();
9094        private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
9095        private int mStart, mEnd;
9096        private long mFadingStartTime;
9097        private final static int FADE_OUT_DURATION = 400;
9098
9099        public CorrectionHighlighter() {
9100            mPaint.setCompatibilityScaling(getResources().getCompatibilityInfo().applicationScale);
9101            mPaint.setStyle(Paint.Style.FILL);
9102        }
9103
9104        public void highlight(CorrectionInfo info) {
9105            mStart = info.getOffset();
9106            mEnd = mStart + info.getNewText().length();
9107            mFadingStartTime = SystemClock.uptimeMillis();
9108
9109            if (mStart < 0 || mEnd < 0) {
9110                stopAnimation();
9111            }
9112        }
9113
9114        public void draw(Canvas canvas, int cursorOffsetVertical) {
9115            if (updatePath() && updatePaint()) {
9116                if (cursorOffsetVertical != 0) {
9117                    canvas.translate(0, cursorOffsetVertical);
9118                }
9119
9120                canvas.drawPath(mPath, mPaint);
9121
9122                if (cursorOffsetVertical != 0) {
9123                    canvas.translate(0, -cursorOffsetVertical);
9124                }
9125                invalidate(true); // TODO invalidate cursor region only
9126            } else {
9127                stopAnimation();
9128                invalidate(false); // TODO invalidate cursor region only
9129            }
9130        }
9131
9132        private boolean updatePaint() {
9133            final long duration = SystemClock.uptimeMillis() - mFadingStartTime;
9134            if (duration > FADE_OUT_DURATION) return false;
9135
9136            final float coef = 1.0f - (float) duration / FADE_OUT_DURATION;
9137            final int highlightColorAlpha = Color.alpha(mHighlightColor);
9138            final int color = (mHighlightColor & 0x00FFFFFF) +
9139                    ((int) (highlightColorAlpha * coef) << 24);
9140            mPaint.setColor(color);
9141            return true;
9142        }
9143
9144        private boolean updatePath() {
9145            final Layout layout = TextView.this.mLayout;
9146            if (layout == null) return false;
9147
9148            // Update in case text is edited while the animation is run
9149            final int length = mText.length();
9150            int start = Math.min(length, mStart);
9151            int end = Math.min(length, mEnd);
9152
9153            mPath.reset();
9154            TextView.this.mLayout.getSelectionPath(start, end, mPath);
9155            return true;
9156        }
9157
9158        private void invalidate(boolean delayed) {
9159            if (TextView.this.mLayout == null) return;
9160
9161            synchronized (TEMP_RECTF) {
9162                mPath.computeBounds(TEMP_RECTF, false);
9163
9164                int left = getCompoundPaddingLeft();
9165                int top = getExtendedPaddingTop() + getVerticalOffset(true);
9166
9167                if (delayed) {
9168                    TextView.this.postInvalidateOnAnimation(
9169                            left + (int) TEMP_RECTF.left, top + (int) TEMP_RECTF.top,
9170                            left + (int) TEMP_RECTF.right, top + (int) TEMP_RECTF.bottom);
9171                } else {
9172                    TextView.this.postInvalidate((int) TEMP_RECTF.left, (int) TEMP_RECTF.top,
9173                            (int) TEMP_RECTF.right, (int) TEMP_RECTF.bottom);
9174                }
9175            }
9176        }
9177
9178        private void stopAnimation() {
9179            TextView.this.getEditor().mCorrectionHighlighter = null;
9180        }
9181    }
9182
9183    private static final class Marquee extends Handler {
9184        // TODO: Add an option to configure this
9185        private static final float MARQUEE_DELTA_MAX = 0.07f;
9186        private static final int MARQUEE_DELAY = 1200;
9187        private static final int MARQUEE_RESTART_DELAY = 1200;
9188        private static final int MARQUEE_RESOLUTION = 1000 / 30;
9189        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
9190
9191        private static final byte MARQUEE_STOPPED = 0x0;
9192        private static final byte MARQUEE_STARTING = 0x1;
9193        private static final byte MARQUEE_RUNNING = 0x2;
9194
9195        private static final int MESSAGE_START = 0x1;
9196        private static final int MESSAGE_TICK = 0x2;
9197        private static final int MESSAGE_RESTART = 0x3;
9198
9199        private final WeakReference<TextView> mView;
9200
9201        private byte mStatus = MARQUEE_STOPPED;
9202        private final float mScrollUnit;
9203        private float mMaxScroll;
9204        float mMaxFadeScroll;
9205        private float mGhostStart;
9206        private float mGhostOffset;
9207        private float mFadeStop;
9208        private int mRepeatLimit;
9209
9210        float mScroll;
9211
9212        Marquee(TextView v) {
9213            final float density = v.getContext().getResources().getDisplayMetrics().density;
9214            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / MARQUEE_RESOLUTION;
9215            mView = new WeakReference<TextView>(v);
9216        }
9217
9218        @Override
9219        public void handleMessage(Message msg) {
9220            switch (msg.what) {
9221                case MESSAGE_START:
9222                    mStatus = MARQUEE_RUNNING;
9223                    tick();
9224                    break;
9225                case MESSAGE_TICK:
9226                    tick();
9227                    break;
9228                case MESSAGE_RESTART:
9229                    if (mStatus == MARQUEE_RUNNING) {
9230                        if (mRepeatLimit >= 0) {
9231                            mRepeatLimit--;
9232                        }
9233                        start(mRepeatLimit);
9234                    }
9235                    break;
9236            }
9237        }
9238
9239        void tick() {
9240            if (mStatus != MARQUEE_RUNNING) {
9241                return;
9242            }
9243
9244            removeMessages(MESSAGE_TICK);
9245
9246            final TextView textView = mView.get();
9247            if (textView != null && (textView.isFocused() || textView.isSelected())) {
9248                mScroll += mScrollUnit;
9249                if (mScroll > mMaxScroll) {
9250                    mScroll = mMaxScroll;
9251                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
9252                } else {
9253                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
9254                }
9255                textView.invalidate();
9256            }
9257        }
9258
9259        void stop() {
9260            mStatus = MARQUEE_STOPPED;
9261            removeMessages(MESSAGE_START);
9262            removeMessages(MESSAGE_RESTART);
9263            removeMessages(MESSAGE_TICK);
9264            resetScroll();
9265        }
9266
9267        private void resetScroll() {
9268            mScroll = 0.0f;
9269            final TextView textView = mView.get();
9270            if (textView != null) textView.invalidate();
9271        }
9272
9273        void start(int repeatLimit) {
9274            if (repeatLimit == 0) {
9275                stop();
9276                return;
9277            }
9278            mRepeatLimit = repeatLimit;
9279            final TextView textView = mView.get();
9280            if (textView != null && textView.mLayout != null) {
9281                mStatus = MARQUEE_STARTING;
9282                mScroll = 0.0f;
9283                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
9284                        textView.getCompoundPaddingRight();
9285                final float lineWidth = textView.mLayout.getLineWidth(0);
9286                final float gap = textWidth / 3.0f;
9287                mGhostStart = lineWidth - textWidth + gap;
9288                mMaxScroll = mGhostStart + textWidth;
9289                mGhostOffset = lineWidth + gap;
9290                mFadeStop = lineWidth + textWidth / 6.0f;
9291                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
9292
9293                textView.invalidate();
9294                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
9295            }
9296        }
9297
9298        float getGhostOffset() {
9299            return mGhostOffset;
9300        }
9301
9302        boolean shouldDrawLeftFade() {
9303            return mScroll <= mFadeStop;
9304        }
9305
9306        boolean shouldDrawGhost() {
9307            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
9308        }
9309
9310        boolean isRunning() {
9311            return mStatus == MARQUEE_RUNNING;
9312        }
9313
9314        boolean isStopped() {
9315            return mStatus == MARQUEE_STOPPED;
9316        }
9317    }
9318
9319    /**
9320     * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related
9321     * pop-up should be displayed.
9322     */
9323    private class EasyEditSpanController {
9324
9325        private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs
9326
9327        private EasyEditPopupWindow mPopupWindow;
9328
9329        private EasyEditSpan mEasyEditSpan;
9330
9331        private Runnable mHidePopup;
9332
9333        private void hide() {
9334            if (mPopupWindow != null) {
9335                mPopupWindow.hide();
9336                TextView.this.removeCallbacks(mHidePopup);
9337            }
9338            removeSpans(mText);
9339            mEasyEditSpan = null;
9340        }
9341
9342        /**
9343         * Monitors the changes in the text.
9344         *
9345         * <p>{@link ChangeWatcher#onSpanAdded(Spannable, Object, int, int)} cannot be used,
9346         * as the notifications are not sent when a spannable (with spans) is inserted.
9347         */
9348        public void onTextChange(CharSequence buffer) {
9349            adjustSpans(mText);
9350
9351            if (getWindowVisibility() != View.VISIBLE) {
9352                // The window is not visible yet, ignore the text change.
9353                return;
9354            }
9355
9356            if (mLayout == null) {
9357                // The view has not been layout yet, ignore the text change
9358                return;
9359            }
9360
9361            InputMethodManager imm = InputMethodManager.peekInstance();
9362            if (!(TextView.this instanceof ExtractEditText)
9363                    && imm != null && imm.isFullscreenMode()) {
9364                // The input is in extract mode. We do not have to handle the easy edit in the
9365                // original TextView, as the ExtractEditText will do
9366                return;
9367            }
9368
9369            // Remove the current easy edit span, as the text changed, and remove the pop-up
9370            // (if any)
9371            if (mEasyEditSpan != null) {
9372                if (mText instanceof Spannable) {
9373                    ((Spannable) mText).removeSpan(mEasyEditSpan);
9374                }
9375                mEasyEditSpan = null;
9376            }
9377            if (mPopupWindow != null && mPopupWindow.isShowing()) {
9378                mPopupWindow.hide();
9379            }
9380
9381            // Display the new easy edit span (if any).
9382            if (buffer instanceof Spanned) {
9383                mEasyEditSpan = getSpan((Spanned) buffer);
9384                if (mEasyEditSpan != null) {
9385                    if (mPopupWindow == null) {
9386                        mPopupWindow = new EasyEditPopupWindow();
9387                        mHidePopup = new Runnable() {
9388                            @Override
9389                            public void run() {
9390                                hide();
9391                            }
9392                        };
9393                    }
9394                    mPopupWindow.show(mEasyEditSpan);
9395                    TextView.this.removeCallbacks(mHidePopup);
9396                    TextView.this.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS);
9397                }
9398            }
9399        }
9400
9401        /**
9402         * Adjusts the spans by removing all of them except the last one.
9403         */
9404        private void adjustSpans(CharSequence buffer) {
9405            // This method enforces that only one easy edit span is attached to the text.
9406            // A better way to enforce this would be to listen for onSpanAdded, but this method
9407            // cannot be used in this scenario as no notification is triggered when a text with
9408            // spans is inserted into a text.
9409            if (buffer instanceof Spannable) {
9410                Spannable spannable = (Spannable) buffer;
9411                EasyEditSpan[] spans = spannable.getSpans(0, spannable.length(),
9412                        EasyEditSpan.class);
9413                for (int i = 0; i < spans.length - 1; i++) {
9414                    spannable.removeSpan(spans[i]);
9415                }
9416            }
9417        }
9418
9419        /**
9420         * Removes all the {@link EasyEditSpan} currently attached.
9421         */
9422        private void removeSpans(CharSequence buffer) {
9423            if (buffer instanceof Spannable) {
9424                Spannable spannable = (Spannable) buffer;
9425                EasyEditSpan[] spans = spannable.getSpans(0, spannable.length(),
9426                        EasyEditSpan.class);
9427                for (int i = 0; i < spans.length; i++) {
9428                    spannable.removeSpan(spans[i]);
9429                }
9430            }
9431        }
9432
9433        private EasyEditSpan getSpan(Spanned spanned) {
9434            EasyEditSpan[] easyEditSpans = spanned.getSpans(0, spanned.length(),
9435                    EasyEditSpan.class);
9436            if (easyEditSpans.length == 0) {
9437                return null;
9438            } else {
9439                return easyEditSpans[0];
9440            }
9441        }
9442    }
9443
9444    /**
9445     * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled
9446     * by {@link EasyEditSpanController}.
9447     */
9448    private class EasyEditPopupWindow extends PinnedPopupWindow
9449            implements OnClickListener {
9450        private static final int POPUP_TEXT_LAYOUT =
9451                com.android.internal.R.layout.text_edit_action_popup_text;
9452        private TextView mDeleteTextView;
9453        private EasyEditSpan mEasyEditSpan;
9454
9455        @Override
9456        protected void createPopupWindow() {
9457            mPopupWindow = new PopupWindow(TextView.this.mContext, null,
9458                    com.android.internal.R.attr.textSelectHandleWindowStyle);
9459            mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED);
9460            mPopupWindow.setClippingEnabled(true);
9461        }
9462
9463        @Override
9464        protected void initContentView() {
9465            LinearLayout linearLayout = new LinearLayout(TextView.this.getContext());
9466            linearLayout.setOrientation(LinearLayout.HORIZONTAL);
9467            mContentView = linearLayout;
9468            mContentView.setBackgroundResource(
9469                    com.android.internal.R.drawable.text_edit_side_paste_window);
9470
9471            LayoutInflater inflater = (LayoutInflater)TextView.this.mContext.
9472                    getSystemService(Context.LAYOUT_INFLATER_SERVICE);
9473
9474            LayoutParams wrapContent = new LayoutParams(
9475                    ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
9476
9477            mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null);
9478            mDeleteTextView.setLayoutParams(wrapContent);
9479            mDeleteTextView.setText(com.android.internal.R.string.delete);
9480            mDeleteTextView.setOnClickListener(this);
9481            mContentView.addView(mDeleteTextView);
9482        }
9483
9484        public void show(EasyEditSpan easyEditSpan) {
9485            mEasyEditSpan = easyEditSpan;
9486            super.show();
9487        }
9488
9489        @Override
9490        public void onClick(View view) {
9491            if (view == mDeleteTextView) {
9492                Editable editable = (Editable) mText;
9493                int start = editable.getSpanStart(mEasyEditSpan);
9494                int end = editable.getSpanEnd(mEasyEditSpan);
9495                if (start >= 0 && end >= 0) {
9496                    deleteText_internal(start, end);
9497                }
9498            }
9499        }
9500
9501        @Override
9502        protected int getTextOffset() {
9503            // Place the pop-up at the end of the span
9504            Editable editable = (Editable) mText;
9505            return editable.getSpanEnd(mEasyEditSpan);
9506        }
9507
9508        @Override
9509        protected int getVerticalLocalPosition(int line) {
9510            return mLayout.getLineBottom(line);
9511        }
9512
9513        @Override
9514        protected int clipVertically(int positionY) {
9515            // As we display the pop-up below the span, no vertical clipping is required.
9516            return positionY;
9517        }
9518    }
9519
9520    private class ChangeWatcher implements TextWatcher, SpanWatcher {
9521
9522        private CharSequence mBeforeText;
9523
9524        private EasyEditSpanController mEasyEditSpanController;
9525
9526        private ChangeWatcher() {
9527            mEasyEditSpanController = new EasyEditSpanController();
9528        }
9529
9530        public void beforeTextChanged(CharSequence buffer, int start,
9531                                      int before, int after) {
9532            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
9533                    + " before=" + before + " after=" + after + ": " + buffer);
9534
9535            if (AccessibilityManager.getInstance(mContext).isEnabled()
9536                    && !isPasswordInputType(getInputType())
9537                    && !hasPasswordTransformationMethod()) {
9538                mBeforeText = buffer.toString();
9539            }
9540
9541            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
9542        }
9543
9544        public void onTextChanged(CharSequence buffer, int start,
9545                                  int before, int after) {
9546            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
9547                    + " before=" + before + " after=" + after + ": " + buffer);
9548            TextView.this.handleTextChanged(buffer, start, before, after);
9549
9550            mEasyEditSpanController.onTextChange(buffer);
9551
9552            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
9553                    (isFocused() || isSelected() && isShown())) {
9554                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
9555                mBeforeText = null;
9556            }
9557        }
9558
9559        public void afterTextChanged(Editable buffer) {
9560            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
9561            TextView.this.sendAfterTextChanged(buffer);
9562
9563            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
9564                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
9565            }
9566        }
9567
9568        public void onSpanChanged(Spannable buf,
9569                                  Object what, int s, int e, int st, int en) {
9570            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
9571                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
9572            TextView.this.spanChange(buf, what, s, st, e, en);
9573        }
9574
9575        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
9576            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
9577                    + " what=" + what + ": " + buf);
9578            TextView.this.spanChange(buf, what, -1, s, -1, e);
9579        }
9580
9581        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
9582            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
9583                    + " what=" + what + ": " + buf);
9584            TextView.this.spanChange(buf, what, s, -1, e, -1);
9585        }
9586
9587        private void hideControllers() {
9588            mEasyEditSpanController.hide();
9589        }
9590    }
9591
9592    private static class Blink extends Handler implements Runnable {
9593        private final WeakReference<TextView> mView;
9594        private boolean mCancelled;
9595
9596        public Blink(TextView v) {
9597            mView = new WeakReference<TextView>(v);
9598        }
9599
9600        public void run() {
9601            if (mCancelled) {
9602                return;
9603            }
9604
9605            removeCallbacks(Blink.this);
9606
9607            TextView tv = mView.get();
9608
9609            if (tv != null && tv.shouldBlink()) {
9610                if (tv.mLayout != null) {
9611                    tv.invalidateCursorPath();
9612                }
9613
9614                postAtTime(this, SystemClock.uptimeMillis() + BLINK);
9615            }
9616        }
9617
9618        void cancel() {
9619            if (!mCancelled) {
9620                removeCallbacks(Blink.this);
9621                mCancelled = true;
9622            }
9623        }
9624
9625        void uncancel() {
9626            mCancelled = false;
9627        }
9628    }
9629
9630    private static class DragLocalState {
9631        public TextView sourceTextView;
9632        public int start, end;
9633
9634        public DragLocalState(TextView sourceTextView, int start, int end) {
9635            this.sourceTextView = sourceTextView;
9636            this.start = start;
9637            this.end = end;
9638        }
9639    }
9640
9641    private class PositionListener implements ViewTreeObserver.OnPreDrawListener {
9642        // 3 handles
9643        // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others)
9644        private final int MAXIMUM_NUMBER_OF_LISTENERS = 6;
9645        private TextViewPositionListener[] mPositionListeners =
9646                new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS];
9647        private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS];
9648        private boolean mPositionHasChanged = true;
9649        // Absolute position of the TextView with respect to its parent window
9650        private int mPositionX, mPositionY;
9651        private int mNumberOfListeners;
9652        private boolean mScrollHasChanged;
9653        final int[] mTempCoords = new int[2];
9654
9655        public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) {
9656            if (mNumberOfListeners == 0) {
9657                updatePosition();
9658                ViewTreeObserver vto = TextView.this.getViewTreeObserver();
9659                vto.addOnPreDrawListener(this);
9660            }
9661
9662            int emptySlotIndex = -1;
9663            for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) {
9664                TextViewPositionListener listener = mPositionListeners[i];
9665                if (listener == positionListener) {
9666                    return;
9667                } else if (emptySlotIndex < 0 && listener == null) {
9668                    emptySlotIndex = i;
9669                }
9670            }
9671
9672            mPositionListeners[emptySlotIndex] = positionListener;
9673            mCanMove[emptySlotIndex] = canMove;
9674            mNumberOfListeners++;
9675        }
9676
9677        public void removeSubscriber(TextViewPositionListener positionListener) {
9678            for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) {
9679                if (mPositionListeners[i] == positionListener) {
9680                    mPositionListeners[i] = null;
9681                    mNumberOfListeners--;
9682                    break;
9683                }
9684            }
9685
9686            if (mNumberOfListeners == 0) {
9687                ViewTreeObserver vto = TextView.this.getViewTreeObserver();
9688                vto.removeOnPreDrawListener(this);
9689            }
9690        }
9691
9692        public int getPositionX() {
9693            return mPositionX;
9694        }
9695
9696        public int getPositionY() {
9697            return mPositionY;
9698        }
9699
9700        @Override
9701        public boolean onPreDraw() {
9702            updatePosition();
9703
9704            for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) {
9705                if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) {
9706                    TextViewPositionListener positionListener = mPositionListeners[i];
9707                    if (positionListener != null) {
9708                        positionListener.updatePosition(mPositionX, mPositionY,
9709                                mPositionHasChanged, mScrollHasChanged);
9710                    }
9711                }
9712            }
9713
9714            mScrollHasChanged = false;
9715            return true;
9716        }
9717
9718        private void updatePosition() {
9719            TextView.this.getLocationInWindow(mTempCoords);
9720
9721            mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY;
9722
9723            mPositionX = mTempCoords[0];
9724            mPositionY = mTempCoords[1];
9725        }
9726
9727        public void onScrollChanged() {
9728            mScrollHasChanged = true;
9729        }
9730    }
9731
9732    private abstract class PinnedPopupWindow implements TextViewPositionListener {
9733        protected PopupWindow mPopupWindow;
9734        protected ViewGroup mContentView;
9735        int mPositionX, mPositionY;
9736
9737        protected abstract void createPopupWindow();
9738        protected abstract void initContentView();
9739        protected abstract int getTextOffset();
9740        protected abstract int getVerticalLocalPosition(int line);
9741        protected abstract int clipVertically(int positionY);
9742
9743        public PinnedPopupWindow() {
9744            createPopupWindow();
9745
9746            mPopupWindow.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL);
9747            mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
9748            mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
9749
9750            initContentView();
9751
9752            LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
9753                    ViewGroup.LayoutParams.WRAP_CONTENT);
9754            mContentView.setLayoutParams(wrapContent);
9755
9756            mPopupWindow.setContentView(mContentView);
9757        }
9758
9759        public void show() {
9760            TextView.this.getPositionListener().addSubscriber(this, false /* offset is fixed */);
9761
9762            computeLocalPosition();
9763
9764            final PositionListener positionListener = TextView.this.getPositionListener();
9765            updatePosition(positionListener.getPositionX(), positionListener.getPositionY());
9766        }
9767
9768        protected void measureContent() {
9769            final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
9770            mContentView.measure(
9771                    View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels,
9772                            View.MeasureSpec.AT_MOST),
9773                    View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels,
9774                            View.MeasureSpec.AT_MOST));
9775        }
9776
9777        /* The popup window will be horizontally centered on the getTextOffset() and vertically
9778         * positioned according to viewportToContentHorizontalOffset.
9779         *
9780         * This method assumes that mContentView has properly been measured from its content. */
9781        private void computeLocalPosition() {
9782            measureContent();
9783            final int width = mContentView.getMeasuredWidth();
9784            final int offset = getTextOffset();
9785            mPositionX = (int) (mLayout.getPrimaryHorizontal(offset) - width / 2.0f);
9786            mPositionX += viewportToContentHorizontalOffset();
9787
9788            final int line = mLayout.getLineForOffset(offset);
9789            mPositionY = getVerticalLocalPosition(line);
9790            mPositionY += viewportToContentVerticalOffset();
9791        }
9792
9793        private void updatePosition(int parentPositionX, int parentPositionY) {
9794            int positionX = parentPositionX + mPositionX;
9795            int positionY = parentPositionY + mPositionY;
9796
9797            positionY = clipVertically(positionY);
9798
9799            // Horizontal clipping
9800            final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
9801            final int width = mContentView.getMeasuredWidth();
9802            positionX = Math.min(displayMetrics.widthPixels - width, positionX);
9803            positionX = Math.max(0, positionX);
9804
9805            if (isShowing()) {
9806                mPopupWindow.update(positionX, positionY, -1, -1);
9807            } else {
9808                mPopupWindow.showAtLocation(TextView.this, Gravity.NO_GRAVITY,
9809                        positionX, positionY);
9810            }
9811        }
9812
9813        public void hide() {
9814            mPopupWindow.dismiss();
9815            TextView.this.getPositionListener().removeSubscriber(this);
9816        }
9817
9818        @Override
9819        public void updatePosition(int parentPositionX, int parentPositionY,
9820                boolean parentPositionChanged, boolean parentScrolled) {
9821            // Either parentPositionChanged or parentScrolled is true, check if still visible
9822            if (isShowing() && isOffsetVisible(getTextOffset())) {
9823                if (parentScrolled) computeLocalPosition();
9824                updatePosition(parentPositionX, parentPositionY);
9825            } else {
9826                hide();
9827            }
9828        }
9829
9830        public boolean isShowing() {
9831            return mPopupWindow.isShowing();
9832        }
9833    }
9834
9835    private class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener {
9836        private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE;
9837        private static final int ADD_TO_DICTIONARY = -1;
9838        private static final int DELETE_TEXT = -2;
9839        private SuggestionInfo[] mSuggestionInfos;
9840        private int mNumberOfSuggestions;
9841        private boolean mCursorWasVisibleBeforeSuggestions;
9842        private boolean mIsShowingUp = false;
9843        private SuggestionAdapter mSuggestionsAdapter;
9844        private final Comparator<SuggestionSpan> mSuggestionSpanComparator;
9845        private final HashMap<SuggestionSpan, Integer> mSpansLengths;
9846
9847        private class CustomPopupWindow extends PopupWindow {
9848            public CustomPopupWindow(Context context, int defStyle) {
9849                super(context, null, defStyle);
9850            }
9851
9852            @Override
9853            public void dismiss() {
9854                super.dismiss();
9855
9856                TextView.this.getPositionListener().removeSubscriber(SuggestionsPopupWindow.this);
9857
9858                // Safe cast since show() checks that mText is an Editable
9859                ((Spannable) mText).removeSpan(getEditor().mSuggestionRangeSpan);
9860
9861                setCursorVisible(mCursorWasVisibleBeforeSuggestions);
9862                if (hasInsertionController()) {
9863                    getInsertionController().show();
9864                }
9865            }
9866        }
9867
9868        public SuggestionsPopupWindow() {
9869            mCursorWasVisibleBeforeSuggestions = getEditor().mCursorVisible;
9870            mSuggestionSpanComparator = new SuggestionSpanComparator();
9871            mSpansLengths = new HashMap<SuggestionSpan, Integer>();
9872        }
9873
9874        @Override
9875        protected void createPopupWindow() {
9876            mPopupWindow = new CustomPopupWindow(TextView.this.mContext,
9877                com.android.internal.R.attr.textSuggestionsWindowStyle);
9878            mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED);
9879            mPopupWindow.setFocusable(true);
9880            mPopupWindow.setClippingEnabled(false);
9881        }
9882
9883        @Override
9884        protected void initContentView() {
9885            ListView listView = new ListView(TextView.this.getContext());
9886            mSuggestionsAdapter = new SuggestionAdapter();
9887            listView.setAdapter(mSuggestionsAdapter);
9888            listView.setOnItemClickListener(this);
9889            mContentView = listView;
9890
9891            // Inflate the suggestion items once and for all. + 2 for add to dictionary and delete
9892            mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS + 2];
9893            for (int i = 0; i < mSuggestionInfos.length; i++) {
9894                mSuggestionInfos[i] = new SuggestionInfo();
9895            }
9896        }
9897
9898        public boolean isShowingUp() {
9899            return mIsShowingUp;
9900        }
9901
9902        public void onParentLostFocus() {
9903            mIsShowingUp = false;
9904        }
9905
9906        private class SuggestionInfo {
9907            int suggestionStart, suggestionEnd; // range of actual suggestion within text
9908            SuggestionSpan suggestionSpan; // the SuggestionSpan that this TextView represents
9909            int suggestionIndex; // the index of this suggestion inside suggestionSpan
9910            SpannableStringBuilder text = new SpannableStringBuilder();
9911            TextAppearanceSpan highlightSpan = new TextAppearanceSpan(mContext,
9912                    android.R.style.TextAppearance_SuggestionHighlight);
9913        }
9914
9915        private class SuggestionAdapter extends BaseAdapter {
9916            private LayoutInflater mInflater = (LayoutInflater) TextView.this.mContext.
9917                    getSystemService(Context.LAYOUT_INFLATER_SERVICE);
9918
9919            @Override
9920            public int getCount() {
9921                return mNumberOfSuggestions;
9922            }
9923
9924            @Override
9925            public Object getItem(int position) {
9926                return mSuggestionInfos[position];
9927            }
9928
9929            @Override
9930            public long getItemId(int position) {
9931                return position;
9932            }
9933
9934            @Override
9935            public View getView(int position, View convertView, ViewGroup parent) {
9936                TextView textView = (TextView) convertView;
9937
9938                if (textView == null) {
9939                    textView = (TextView) mInflater.inflate(mTextEditSuggestionItemLayout, parent,
9940                            false);
9941                }
9942
9943                final SuggestionInfo suggestionInfo = mSuggestionInfos[position];
9944                textView.setText(suggestionInfo.text);
9945
9946                if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY) {
9947                    textView.setCompoundDrawablesWithIntrinsicBounds(
9948                            com.android.internal.R.drawable.ic_suggestions_add, 0, 0, 0);
9949                } else if (suggestionInfo.suggestionIndex == DELETE_TEXT) {
9950                    textView.setCompoundDrawablesWithIntrinsicBounds(
9951                            com.android.internal.R.drawable.ic_suggestions_delete, 0, 0, 0);
9952                } else {
9953                    textView.setCompoundDrawables(null, null, null, null);
9954                }
9955
9956                return textView;
9957            }
9958        }
9959
9960        private class SuggestionSpanComparator implements Comparator<SuggestionSpan> {
9961            public int compare(SuggestionSpan span1, SuggestionSpan span2) {
9962                final int flag1 = span1.getFlags();
9963                final int flag2 = span2.getFlags();
9964                if (flag1 != flag2) {
9965                    // The order here should match what is used in updateDrawState
9966                    final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0;
9967                    final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0;
9968                    final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0;
9969                    final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0;
9970                    if (easy1 && !misspelled1) return -1;
9971                    if (easy2 && !misspelled2) return 1;
9972                    if (misspelled1) return -1;
9973                    if (misspelled2) return 1;
9974                }
9975
9976                return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue();
9977            }
9978        }
9979
9980        /**
9981         * Returns the suggestion spans that cover the current cursor position. The suggestion
9982         * spans are sorted according to the length of text that they are attached to.
9983         */
9984        private SuggestionSpan[] getSuggestionSpans() {
9985            int pos = TextView.this.getSelectionStart();
9986            Spannable spannable = (Spannable) TextView.this.mText;
9987            SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class);
9988
9989            mSpansLengths.clear();
9990            for (SuggestionSpan suggestionSpan : suggestionSpans) {
9991                int start = spannable.getSpanStart(suggestionSpan);
9992                int end = spannable.getSpanEnd(suggestionSpan);
9993                mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start));
9994            }
9995
9996            // The suggestions are sorted according to their types (easy correction first, then
9997            // misspelled) and to the length of the text that they cover (shorter first).
9998            Arrays.sort(suggestionSpans, mSuggestionSpanComparator);
9999            return suggestionSpans;
10000        }
10001
10002        @Override
10003        public void show() {
10004            if (!(mText instanceof Editable)) return;
10005
10006            if (updateSuggestions()) {
10007                mCursorWasVisibleBeforeSuggestions = getEditor().mCursorVisible;
10008                setCursorVisible(false);
10009                mIsShowingUp = true;
10010                super.show();
10011            }
10012        }
10013
10014        @Override
10015        protected void measureContent() {
10016            final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
10017            final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec(
10018                    displayMetrics.widthPixels, View.MeasureSpec.AT_MOST);
10019            final int verticalMeasure = View.MeasureSpec.makeMeasureSpec(
10020                    displayMetrics.heightPixels, View.MeasureSpec.AT_MOST);
10021
10022            int width = 0;
10023            View view = null;
10024            for (int i = 0; i < mNumberOfSuggestions; i++) {
10025                view = mSuggestionsAdapter.getView(i, view, mContentView);
10026                view.getLayoutParams().width = LayoutParams.WRAP_CONTENT;
10027                view.measure(horizontalMeasure, verticalMeasure);
10028                width = Math.max(width, view.getMeasuredWidth());
10029            }
10030
10031            // Enforce the width based on actual text widths
10032            mContentView.measure(
10033                    View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY),
10034                    verticalMeasure);
10035
10036            Drawable popupBackground = mPopupWindow.getBackground();
10037            if (popupBackground != null) {
10038                if (mTempRect == null) mTempRect = new Rect();
10039                popupBackground.getPadding(mTempRect);
10040                width += mTempRect.left + mTempRect.right;
10041            }
10042            mPopupWindow.setWidth(width);
10043        }
10044
10045        @Override
10046        protected int getTextOffset() {
10047            return getSelectionStart();
10048        }
10049
10050        @Override
10051        protected int getVerticalLocalPosition(int line) {
10052            return mLayout.getLineBottom(line);
10053        }
10054
10055        @Override
10056        protected int clipVertically(int positionY) {
10057            final int height = mContentView.getMeasuredHeight();
10058            final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
10059            return Math.min(positionY, displayMetrics.heightPixels - height);
10060        }
10061
10062        @Override
10063        public void hide() {
10064            super.hide();
10065        }
10066
10067        private boolean updateSuggestions() {
10068            Spannable spannable = (Spannable) TextView.this.mText;
10069            SuggestionSpan[] suggestionSpans = getSuggestionSpans();
10070
10071            final int nbSpans = suggestionSpans.length;
10072            // Suggestions are shown after a delay: the underlying spans may have been removed
10073            if (nbSpans == 0) return false;
10074
10075            mNumberOfSuggestions = 0;
10076            int spanUnionStart = mText.length();
10077            int spanUnionEnd = 0;
10078
10079            SuggestionSpan misspelledSpan = null;
10080            int underlineColor = 0;
10081
10082            for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) {
10083                SuggestionSpan suggestionSpan = suggestionSpans[spanIndex];
10084                final int spanStart = spannable.getSpanStart(suggestionSpan);
10085                final int spanEnd = spannable.getSpanEnd(suggestionSpan);
10086                spanUnionStart = Math.min(spanStart, spanUnionStart);
10087                spanUnionEnd = Math.max(spanEnd, spanUnionEnd);
10088
10089                if ((suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) {
10090                    misspelledSpan = suggestionSpan;
10091                }
10092
10093                // The first span dictates the background color of the highlighted text
10094                if (spanIndex == 0) underlineColor = suggestionSpan.getUnderlineColor();
10095
10096                String[] suggestions = suggestionSpan.getSuggestions();
10097                int nbSuggestions = suggestions.length;
10098                for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) {
10099                    String suggestion = suggestions[suggestionIndex];
10100
10101                    boolean suggestionIsDuplicate = false;
10102                    for (int i = 0; i < mNumberOfSuggestions; i++) {
10103                        if (mSuggestionInfos[i].text.toString().equals(suggestion)) {
10104                            SuggestionSpan otherSuggestionSpan = mSuggestionInfos[i].suggestionSpan;
10105                            final int otherSpanStart = spannable.getSpanStart(otherSuggestionSpan);
10106                            final int otherSpanEnd = spannable.getSpanEnd(otherSuggestionSpan);
10107                            if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) {
10108                                suggestionIsDuplicate = true;
10109                                break;
10110                            }
10111                        }
10112                    }
10113
10114                    if (!suggestionIsDuplicate) {
10115                        SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions];
10116                        suggestionInfo.suggestionSpan = suggestionSpan;
10117                        suggestionInfo.suggestionIndex = suggestionIndex;
10118                        suggestionInfo.text.replace(0, suggestionInfo.text.length(), suggestion);
10119
10120                        mNumberOfSuggestions++;
10121
10122                        if (mNumberOfSuggestions == MAX_NUMBER_SUGGESTIONS) {
10123                            // Also end outer for loop
10124                            spanIndex = nbSpans;
10125                            break;
10126                        }
10127                    }
10128                }
10129            }
10130
10131            for (int i = 0; i < mNumberOfSuggestions; i++) {
10132                highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd);
10133            }
10134
10135            // Add "Add to dictionary" item if there is a span with the misspelled flag
10136            if (misspelledSpan != null) {
10137                final int misspelledStart = spannable.getSpanStart(misspelledSpan);
10138                final int misspelledEnd = spannable.getSpanEnd(misspelledSpan);
10139                if (misspelledStart >= 0 && misspelledEnd > misspelledStart) {
10140                    SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions];
10141                    suggestionInfo.suggestionSpan = misspelledSpan;
10142                    suggestionInfo.suggestionIndex = ADD_TO_DICTIONARY;
10143                    suggestionInfo.text.replace(0, suggestionInfo.text.length(),
10144                            getContext().getString(com.android.internal.R.string.addToDictionary));
10145                    suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0,
10146                            Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
10147
10148                    mNumberOfSuggestions++;
10149                }
10150            }
10151
10152            // Delete item
10153            SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions];
10154            suggestionInfo.suggestionSpan = null;
10155            suggestionInfo.suggestionIndex = DELETE_TEXT;
10156            suggestionInfo.text.replace(0, suggestionInfo.text.length(),
10157                    getContext().getString(com.android.internal.R.string.deleteText));
10158            suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0,
10159                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
10160            mNumberOfSuggestions++;
10161
10162            if (getEditor().mSuggestionRangeSpan == null) getEditor().mSuggestionRangeSpan = new SuggestionRangeSpan();
10163            if (underlineColor == 0) {
10164                // Fallback on the default highlight color when the first span does not provide one
10165                getEditor().mSuggestionRangeSpan.setBackgroundColor(mHighlightColor);
10166            } else {
10167                final float BACKGROUND_TRANSPARENCY = 0.4f;
10168                final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY);
10169                getEditor().mSuggestionRangeSpan.setBackgroundColor(
10170                        (underlineColor & 0x00FFFFFF) + (newAlpha << 24));
10171            }
10172            spannable.setSpan(getEditor().mSuggestionRangeSpan, spanUnionStart, spanUnionEnd,
10173                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
10174
10175            mSuggestionsAdapter.notifyDataSetChanged();
10176            return true;
10177        }
10178
10179        private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart,
10180                int unionEnd) {
10181            final Spannable text = (Spannable) mText;
10182            final int spanStart = text.getSpanStart(suggestionInfo.suggestionSpan);
10183            final int spanEnd = text.getSpanEnd(suggestionInfo.suggestionSpan);
10184
10185            // Adjust the start/end of the suggestion span
10186            suggestionInfo.suggestionStart = spanStart - unionStart;
10187            suggestionInfo.suggestionEnd = suggestionInfo.suggestionStart
10188                    + suggestionInfo.text.length();
10189
10190            suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0,
10191                    suggestionInfo.text.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
10192
10193            // Add the text before and after the span.
10194            final String textAsString = text.toString();
10195            suggestionInfo.text.insert(0, textAsString.substring(unionStart, spanStart));
10196            suggestionInfo.text.append(textAsString.substring(spanEnd, unionEnd));
10197        }
10198
10199        @Override
10200        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
10201            Editable editable = (Editable) mText;
10202            SuggestionInfo suggestionInfo = mSuggestionInfos[position];
10203
10204            if (suggestionInfo.suggestionIndex == DELETE_TEXT) {
10205                final int spanUnionStart = editable.getSpanStart(getEditor().mSuggestionRangeSpan);
10206                int spanUnionEnd = editable.getSpanEnd(getEditor().mSuggestionRangeSpan);
10207                if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) {
10208                    // Do not leave two adjacent spaces after deletion, or one at beginning of text
10209                    if (spanUnionEnd < editable.length() &&
10210                            Character.isSpaceChar(editable.charAt(spanUnionEnd)) &&
10211                            (spanUnionStart == 0 ||
10212                            Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) {
10213                        spanUnionEnd = spanUnionEnd + 1;
10214                    }
10215                    deleteText_internal(spanUnionStart, spanUnionEnd);
10216                }
10217                hide();
10218                return;
10219            }
10220
10221            final int spanStart = editable.getSpanStart(suggestionInfo.suggestionSpan);
10222            final int spanEnd = editable.getSpanEnd(suggestionInfo.suggestionSpan);
10223            if (spanStart < 0 || spanEnd <= spanStart) {
10224                // Span has been removed
10225                hide();
10226                return;
10227            }
10228            final String originalText = mText.toString().substring(spanStart, spanEnd);
10229
10230            if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY) {
10231                Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT);
10232                intent.putExtra("word", originalText);
10233                intent.putExtra("locale", getTextServicesLocale().toString());
10234                intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK);
10235                getContext().startActivity(intent);
10236                // There is no way to know if the word was indeed added. Re-check.
10237                // TODO The ExtractEditText should remove the span in the original text instead
10238                editable.removeSpan(suggestionInfo.suggestionSpan);
10239                updateSpellCheckSpans(spanStart, spanEnd, false);
10240            } else {
10241                // SuggestionSpans are removed by replace: save them before
10242                SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd,
10243                        SuggestionSpan.class);
10244                final int length = suggestionSpans.length;
10245                int[] suggestionSpansStarts = new int[length];
10246                int[] suggestionSpansEnds = new int[length];
10247                int[] suggestionSpansFlags = new int[length];
10248                for (int i = 0; i < length; i++) {
10249                    final SuggestionSpan suggestionSpan = suggestionSpans[i];
10250                    suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan);
10251                    suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan);
10252                    suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan);
10253
10254                    // Remove potential misspelled flags
10255                    int suggestionSpanFlags = suggestionSpan.getFlags();
10256                    if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) > 0) {
10257                        suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED;
10258                        suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT;
10259                        suggestionSpan.setFlags(suggestionSpanFlags);
10260                    }
10261                }
10262
10263                final int suggestionStart = suggestionInfo.suggestionStart;
10264                final int suggestionEnd = suggestionInfo.suggestionEnd;
10265                final String suggestion = suggestionInfo.text.subSequence(
10266                        suggestionStart, suggestionEnd).toString();
10267                replaceText_internal(spanStart, spanEnd, suggestion);
10268
10269                // Notify source IME of the suggestion pick. Do this before swaping texts.
10270                if (!TextUtils.isEmpty(
10271                        suggestionInfo.suggestionSpan.getNotificationTargetClassName())) {
10272                    InputMethodManager imm = InputMethodManager.peekInstance();
10273                    if (imm != null) {
10274                        imm.notifySuggestionPicked(suggestionInfo.suggestionSpan, originalText,
10275                                suggestionInfo.suggestionIndex);
10276                    }
10277                }
10278
10279                // Swap text content between actual text and Suggestion span
10280                String[] suggestions = suggestionInfo.suggestionSpan.getSuggestions();
10281                suggestions[suggestionInfo.suggestionIndex] = originalText;
10282
10283                // Restore previous SuggestionSpans
10284                final int lengthDifference = suggestion.length() - (spanEnd - spanStart);
10285                for (int i = 0; i < length; i++) {
10286                    // Only spans that include the modified region make sense after replacement
10287                    // Spans partially included in the replaced region are removed, there is no
10288                    // way to assign them a valid range after replacement
10289                    if (suggestionSpansStarts[i] <= spanStart &&
10290                            suggestionSpansEnds[i] >= spanEnd) {
10291                        setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i],
10292                                suggestionSpansEnds[i] + lengthDifference, suggestionSpansFlags[i]);
10293                    }
10294                }
10295
10296                // Move cursor at the end of the replaced word
10297                final int newCursorPosition = spanEnd + lengthDifference;
10298                setCursorPosition_internal(newCursorPosition, newCursorPosition);
10299            }
10300
10301            hide();
10302        }
10303    }
10304
10305    /**
10306     * An ActionMode Callback class that is used to provide actions while in text selection mode.
10307     *
10308     * The default callback provides a subset of Select All, Cut, Copy and Paste actions, depending
10309     * on which of these this TextView supports.
10310     */
10311    private class SelectionActionModeCallback implements ActionMode.Callback {
10312
10313        @Override
10314        public boolean onCreateActionMode(ActionMode mode, Menu menu) {
10315            TypedArray styledAttributes = mContext.obtainStyledAttributes(
10316                    com.android.internal.R.styleable.SelectionModeDrawables);
10317
10318            boolean allowText = getContext().getResources().getBoolean(
10319                    com.android.internal.R.bool.config_allowActionMenuItemTextWithIcon);
10320
10321            mode.setTitle(mContext.getString(com.android.internal.R.string.textSelectionCABTitle));
10322            mode.setSubtitle(null);
10323            mode.setTitleOptionalHint(true);
10324
10325            int selectAllIconId = 0; // No icon by default
10326            if (!allowText) {
10327                // Provide an icon, text will not be displayed on smaller screens.
10328                selectAllIconId = styledAttributes.getResourceId(
10329                        R.styleable.SelectionModeDrawables_actionModeSelectAllDrawable, 0);
10330            }
10331
10332            menu.add(0, ID_SELECT_ALL, 0, com.android.internal.R.string.selectAll).
10333                    setIcon(selectAllIconId).
10334                    setAlphabeticShortcut('a').
10335                    setShowAsAction(
10336                            MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
10337
10338            if (canCut()) {
10339                menu.add(0, ID_CUT, 0, com.android.internal.R.string.cut).
10340                    setIcon(styledAttributes.getResourceId(
10341                            R.styleable.SelectionModeDrawables_actionModeCutDrawable, 0)).
10342                    setAlphabeticShortcut('x').
10343                    setShowAsAction(
10344                            MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
10345            }
10346
10347            if (canCopy()) {
10348                menu.add(0, ID_COPY, 0, com.android.internal.R.string.copy).
10349                    setIcon(styledAttributes.getResourceId(
10350                            R.styleable.SelectionModeDrawables_actionModeCopyDrawable, 0)).
10351                    setAlphabeticShortcut('c').
10352                    setShowAsAction(
10353                            MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
10354            }
10355
10356            if (canPaste()) {
10357                menu.add(0, ID_PASTE, 0, com.android.internal.R.string.paste).
10358                        setIcon(styledAttributes.getResourceId(
10359                                R.styleable.SelectionModeDrawables_actionModePasteDrawable, 0)).
10360                        setAlphabeticShortcut('v').
10361                        setShowAsAction(
10362                                MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
10363            }
10364
10365            styledAttributes.recycle();
10366
10367            if (getEditor().mCustomSelectionActionModeCallback != null) {
10368                if (!getEditor().mCustomSelectionActionModeCallback.onCreateActionMode(mode, menu)) {
10369                    // The custom mode can choose to cancel the action mode
10370                    return false;
10371                }
10372            }
10373
10374            if (menu.hasVisibleItems() || mode.getCustomView() != null) {
10375                getSelectionController().show();
10376                return true;
10377            } else {
10378                return false;
10379            }
10380        }
10381
10382        @Override
10383        public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
10384            if (getEditor().mCustomSelectionActionModeCallback != null) {
10385                return getEditor().mCustomSelectionActionModeCallback.onPrepareActionMode(mode, menu);
10386            }
10387            return true;
10388        }
10389
10390        @Override
10391        public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
10392            if (getEditor().mCustomSelectionActionModeCallback != null &&
10393                 getEditor().mCustomSelectionActionModeCallback.onActionItemClicked(mode, item)) {
10394                return true;
10395            }
10396            return onTextContextMenuItem(item.getItemId());
10397        }
10398
10399        @Override
10400        public void onDestroyActionMode(ActionMode mode) {
10401            if (getEditor().mCustomSelectionActionModeCallback != null) {
10402                getEditor().mCustomSelectionActionModeCallback.onDestroyActionMode(mode);
10403            }
10404            Selection.setSelection((Spannable) mText, getSelectionEnd());
10405
10406            if (getEditor().mSelectionModifierCursorController != null) {
10407                getEditor().mSelectionModifierCursorController.hide();
10408            }
10409
10410            getEditor().mSelectionActionMode = null;
10411        }
10412    }
10413
10414    private class ActionPopupWindow extends PinnedPopupWindow implements OnClickListener {
10415        private static final int POPUP_TEXT_LAYOUT =
10416                com.android.internal.R.layout.text_edit_action_popup_text;
10417        private TextView mPasteTextView;
10418        private TextView mReplaceTextView;
10419
10420        @Override
10421        protected void createPopupWindow() {
10422            mPopupWindow = new PopupWindow(TextView.this.mContext, null,
10423                    com.android.internal.R.attr.textSelectHandleWindowStyle);
10424            mPopupWindow.setClippingEnabled(true);
10425        }
10426
10427        @Override
10428        protected void initContentView() {
10429            LinearLayout linearLayout = new LinearLayout(TextView.this.getContext());
10430            linearLayout.setOrientation(LinearLayout.HORIZONTAL);
10431            mContentView = linearLayout;
10432            mContentView.setBackgroundResource(
10433                    com.android.internal.R.drawable.text_edit_paste_window);
10434
10435            LayoutInflater inflater = (LayoutInflater)TextView.this.mContext.
10436                    getSystemService(Context.LAYOUT_INFLATER_SERVICE);
10437
10438            LayoutParams wrapContent = new LayoutParams(
10439                    ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
10440
10441            mPasteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null);
10442            mPasteTextView.setLayoutParams(wrapContent);
10443            mContentView.addView(mPasteTextView);
10444            mPasteTextView.setText(com.android.internal.R.string.paste);
10445            mPasteTextView.setOnClickListener(this);
10446
10447            mReplaceTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null);
10448            mReplaceTextView.setLayoutParams(wrapContent);
10449            mContentView.addView(mReplaceTextView);
10450            mReplaceTextView.setText(com.android.internal.R.string.replace);
10451            mReplaceTextView.setOnClickListener(this);
10452        }
10453
10454        @Override
10455        public void show() {
10456            boolean canPaste = canPaste();
10457            boolean canSuggest = isSuggestionsEnabled() && isCursorInsideSuggestionSpan();
10458            mPasteTextView.setVisibility(canPaste ? View.VISIBLE : View.GONE);
10459            mReplaceTextView.setVisibility(canSuggest ? View.VISIBLE : View.GONE);
10460
10461            if (!canPaste && !canSuggest) return;
10462
10463            super.show();
10464        }
10465
10466        @Override
10467        public void onClick(View view) {
10468            if (view == mPasteTextView && canPaste()) {
10469                onTextContextMenuItem(ID_PASTE);
10470                hide();
10471            } else if (view == mReplaceTextView) {
10472                final int middle = (getSelectionStart() + getSelectionEnd()) / 2;
10473                stopSelectionActionMode();
10474                Selection.setSelection((Spannable) mText, middle);
10475                showSuggestions();
10476            }
10477        }
10478
10479        @Override
10480        protected int getTextOffset() {
10481            return (getSelectionStart() + getSelectionEnd()) / 2;
10482        }
10483
10484        @Override
10485        protected int getVerticalLocalPosition(int line) {
10486            return mLayout.getLineTop(line) - mContentView.getMeasuredHeight();
10487        }
10488
10489        @Override
10490        protected int clipVertically(int positionY) {
10491            if (positionY < 0) {
10492                final int offset = getTextOffset();
10493                final int line = mLayout.getLineForOffset(offset);
10494                positionY += mLayout.getLineBottom(line) - mLayout.getLineTop(line);
10495                positionY += mContentView.getMeasuredHeight();
10496
10497                // Assumes insertion and selection handles share the same height
10498                final Drawable handle = mContext.getResources().getDrawable(mTextSelectHandleRes);
10499                positionY += handle.getIntrinsicHeight();
10500            }
10501
10502            return positionY;
10503        }
10504    }
10505
10506    private abstract class HandleView extends View implements TextViewPositionListener {
10507        protected Drawable mDrawable;
10508        protected Drawable mDrawableLtr;
10509        protected Drawable mDrawableRtl;
10510        private final PopupWindow mContainer;
10511        // Position with respect to the parent TextView
10512        private int mPositionX, mPositionY;
10513        private boolean mIsDragging;
10514        // Offset from touch position to mPosition
10515        private float mTouchToWindowOffsetX, mTouchToWindowOffsetY;
10516        protected int mHotspotX;
10517        // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up
10518        private float mTouchOffsetY;
10519        // Where the touch position should be on the handle to ensure a maximum cursor visibility
10520        private float mIdealVerticalOffset;
10521        // Parent's (TextView) previous position in window
10522        private int mLastParentX, mLastParentY;
10523        // Transient action popup window for Paste and Replace actions
10524        protected ActionPopupWindow mActionPopupWindow;
10525        // Previous text character offset
10526        private int mPreviousOffset = -1;
10527        // Previous text character offset
10528        private boolean mPositionHasChanged = true;
10529        // Used to delay the appearance of the action popup window
10530        private Runnable mActionPopupShower;
10531
10532        public HandleView(Drawable drawableLtr, Drawable drawableRtl) {
10533            super(TextView.this.mContext);
10534            mContainer = new PopupWindow(TextView.this.mContext, null,
10535                    com.android.internal.R.attr.textSelectHandleWindowStyle);
10536            mContainer.setSplitTouchEnabled(true);
10537            mContainer.setClippingEnabled(false);
10538            mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL);
10539            mContainer.setContentView(this);
10540
10541            mDrawableLtr = drawableLtr;
10542            mDrawableRtl = drawableRtl;
10543
10544            updateDrawable();
10545
10546            final int handleHeight = mDrawable.getIntrinsicHeight();
10547            mTouchOffsetY = -0.3f * handleHeight;
10548            mIdealVerticalOffset = 0.7f * handleHeight;
10549        }
10550
10551        protected void updateDrawable() {
10552            final int offset = getCurrentCursorOffset();
10553            final boolean isRtlCharAtOffset = mLayout.isRtlCharAt(offset);
10554            mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr;
10555            mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset);
10556        }
10557
10558        protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun);
10559
10560        // Touch-up filter: number of previous positions remembered
10561        private static final int HISTORY_SIZE = 5;
10562        private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150;
10563        private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350;
10564        private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE];
10565        private final int[] mPreviousOffsets = new int[HISTORY_SIZE];
10566        private int mPreviousOffsetIndex = 0;
10567        private int mNumberPreviousOffsets = 0;
10568
10569        private void startTouchUpFilter(int offset) {
10570            mNumberPreviousOffsets = 0;
10571            addPositionToTouchUpFilter(offset);
10572        }
10573
10574        private void addPositionToTouchUpFilter(int offset) {
10575            mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE;
10576            mPreviousOffsets[mPreviousOffsetIndex] = offset;
10577            mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis();
10578            mNumberPreviousOffsets++;
10579        }
10580
10581        private void filterOnTouchUp() {
10582            final long now = SystemClock.uptimeMillis();
10583            int i = 0;
10584            int index = mPreviousOffsetIndex;
10585            final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE);
10586            while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) {
10587                i++;
10588                index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE;
10589            }
10590
10591            if (i > 0 && i < iMax &&
10592                    (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) {
10593                positionAtCursorOffset(mPreviousOffsets[index], false);
10594            }
10595        }
10596
10597        public boolean offsetHasBeenChanged() {
10598            return mNumberPreviousOffsets > 1;
10599        }
10600
10601        @Override
10602        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
10603            setMeasuredDimension(mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight());
10604        }
10605
10606        public void show() {
10607            if (isShowing()) return;
10608
10609            getPositionListener().addSubscriber(this, true /* local position may change */);
10610
10611            // Make sure the offset is always considered new, even when focusing at same position
10612            mPreviousOffset = -1;
10613            positionAtCursorOffset(getCurrentCursorOffset(), false);
10614
10615            hideActionPopupWindow();
10616        }
10617
10618        protected void dismiss() {
10619            mIsDragging = false;
10620            mContainer.dismiss();
10621            onDetached();
10622        }
10623
10624        public void hide() {
10625            dismiss();
10626
10627            TextView.this.getPositionListener().removeSubscriber(this);
10628        }
10629
10630        void showActionPopupWindow(int delay) {
10631            if (mActionPopupWindow == null) {
10632                mActionPopupWindow = new ActionPopupWindow();
10633            }
10634            if (mActionPopupShower == null) {
10635                mActionPopupShower = new Runnable() {
10636                    public void run() {
10637                        mActionPopupWindow.show();
10638                    }
10639                };
10640            } else {
10641                TextView.this.removeCallbacks(mActionPopupShower);
10642            }
10643            TextView.this.postDelayed(mActionPopupShower, delay);
10644        }
10645
10646        protected void hideActionPopupWindow() {
10647            if (mActionPopupShower != null) {
10648                TextView.this.removeCallbacks(mActionPopupShower);
10649            }
10650            if (mActionPopupWindow != null) {
10651                mActionPopupWindow.hide();
10652            }
10653        }
10654
10655        public boolean isShowing() {
10656            return mContainer.isShowing();
10657        }
10658
10659        private boolean isVisible() {
10660            // Always show a dragging handle.
10661            if (mIsDragging) {
10662                return true;
10663            }
10664
10665            if (isInBatchEditMode()) {
10666                return false;
10667            }
10668
10669            return TextView.this.isPositionVisible(mPositionX + mHotspotX, mPositionY);
10670        }
10671
10672        public abstract int getCurrentCursorOffset();
10673
10674        protected abstract void updateSelection(int offset);
10675
10676        public abstract void updatePosition(float x, float y);
10677
10678        protected void positionAtCursorOffset(int offset, boolean parentScrolled) {
10679            // A HandleView relies on the layout, which may be nulled by external methods
10680            if (mLayout == null) {
10681                // Will update controllers' state, hiding them and stopping selection mode if needed
10682                prepareCursorControllers();
10683                return;
10684            }
10685
10686            boolean offsetChanged = offset != mPreviousOffset;
10687            if (offsetChanged || parentScrolled) {
10688                if (offsetChanged) {
10689                    updateSelection(offset);
10690                    addPositionToTouchUpFilter(offset);
10691                }
10692                final int line = mLayout.getLineForOffset(offset);
10693
10694                mPositionX = (int) (mLayout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX);
10695                mPositionY = mLayout.getLineBottom(line);
10696
10697                // Take TextView's padding and scroll into account.
10698                mPositionX += viewportToContentHorizontalOffset();
10699                mPositionY += viewportToContentVerticalOffset();
10700
10701                mPreviousOffset = offset;
10702                mPositionHasChanged = true;
10703            }
10704        }
10705
10706        public void updatePosition(int parentPositionX, int parentPositionY,
10707                boolean parentPositionChanged, boolean parentScrolled) {
10708            positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled);
10709            if (parentPositionChanged || mPositionHasChanged) {
10710                if (mIsDragging) {
10711                    // Update touchToWindow offset in case of parent scrolling while dragging
10712                    if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) {
10713                        mTouchToWindowOffsetX += parentPositionX - mLastParentX;
10714                        mTouchToWindowOffsetY += parentPositionY - mLastParentY;
10715                        mLastParentX = parentPositionX;
10716                        mLastParentY = parentPositionY;
10717                    }
10718
10719                    onHandleMoved();
10720                }
10721
10722                if (isVisible()) {
10723                    final int positionX = parentPositionX + mPositionX;
10724                    final int positionY = parentPositionY + mPositionY;
10725                    if (isShowing()) {
10726                        mContainer.update(positionX, positionY, -1, -1);
10727                    } else {
10728                        mContainer.showAtLocation(TextView.this, Gravity.NO_GRAVITY,
10729                                positionX, positionY);
10730                    }
10731                } else {
10732                    if (isShowing()) {
10733                        dismiss();
10734                    }
10735                }
10736
10737                mPositionHasChanged = false;
10738            }
10739        }
10740
10741        @Override
10742        protected void onDraw(Canvas c) {
10743            mDrawable.setBounds(0, 0, mRight - mLeft, mBottom - mTop);
10744            mDrawable.draw(c);
10745        }
10746
10747        @Override
10748        public boolean onTouchEvent(MotionEvent ev) {
10749            switch (ev.getActionMasked()) {
10750                case MotionEvent.ACTION_DOWN: {
10751                    startTouchUpFilter(getCurrentCursorOffset());
10752                    mTouchToWindowOffsetX = ev.getRawX() - mPositionX;
10753                    mTouchToWindowOffsetY = ev.getRawY() - mPositionY;
10754
10755                    final PositionListener positionListener = getPositionListener();
10756                    mLastParentX = positionListener.getPositionX();
10757                    mLastParentY = positionListener.getPositionY();
10758                    mIsDragging = true;
10759                    break;
10760                }
10761
10762                case MotionEvent.ACTION_MOVE: {
10763                    final float rawX = ev.getRawX();
10764                    final float rawY = ev.getRawY();
10765
10766                    // Vertical hysteresis: vertical down movement tends to snap to ideal offset
10767                    final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY;
10768                    final float currentVerticalOffset = rawY - mPositionY - mLastParentY;
10769                    float newVerticalOffset;
10770                    if (previousVerticalOffset < mIdealVerticalOffset) {
10771                        newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset);
10772                        newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset);
10773                    } else {
10774                        newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset);
10775                        newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset);
10776                    }
10777                    mTouchToWindowOffsetY = newVerticalOffset + mLastParentY;
10778
10779                    final float newPosX = rawX - mTouchToWindowOffsetX + mHotspotX;
10780                    final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY;
10781
10782                    updatePosition(newPosX, newPosY);
10783                    break;
10784                }
10785
10786                case MotionEvent.ACTION_UP:
10787                    filterOnTouchUp();
10788                    mIsDragging = false;
10789                    break;
10790
10791                case MotionEvent.ACTION_CANCEL:
10792                    mIsDragging = false;
10793                    break;
10794            }
10795            return true;
10796        }
10797
10798        public boolean isDragging() {
10799            return mIsDragging;
10800        }
10801
10802        void onHandleMoved() {
10803            hideActionPopupWindow();
10804        }
10805
10806        public void onDetached() {
10807            hideActionPopupWindow();
10808        }
10809    }
10810
10811    private class InsertionHandleView extends HandleView {
10812        private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000;
10813        private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds
10814
10815        // Used to detect taps on the insertion handle, which will affect the ActionPopupWindow
10816        private float mDownPositionX, mDownPositionY;
10817        private Runnable mHider;
10818
10819        public InsertionHandleView(Drawable drawable) {
10820            super(drawable, drawable);
10821        }
10822
10823        @Override
10824        public void show() {
10825            super.show();
10826
10827            final long durationSinceCutOrCopy = SystemClock.uptimeMillis() - LAST_CUT_OR_COPY_TIME;
10828            if (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION) {
10829                showActionPopupWindow(0);
10830            }
10831
10832            hideAfterDelay();
10833        }
10834
10835        public void showWithActionPopup() {
10836            show();
10837            showActionPopupWindow(0);
10838        }
10839
10840        private void hideAfterDelay() {
10841            if (mHider == null) {
10842                mHider = new Runnable() {
10843                    public void run() {
10844                        hide();
10845                    }
10846                };
10847            } else {
10848                removeHiderCallback();
10849            }
10850            TextView.this.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT);
10851        }
10852
10853        private void removeHiderCallback() {
10854            if (mHider != null) {
10855                TextView.this.removeCallbacks(mHider);
10856            }
10857        }
10858
10859        @Override
10860        protected int getHotspotX(Drawable drawable, boolean isRtlRun) {
10861            return drawable.getIntrinsicWidth() / 2;
10862        }
10863
10864        @Override
10865        public boolean onTouchEvent(MotionEvent ev) {
10866            final boolean result = super.onTouchEvent(ev);
10867
10868            switch (ev.getActionMasked()) {
10869                case MotionEvent.ACTION_DOWN:
10870                    mDownPositionX = ev.getRawX();
10871                    mDownPositionY = ev.getRawY();
10872                    break;
10873
10874                case MotionEvent.ACTION_UP:
10875                    if (!offsetHasBeenChanged()) {
10876                        final float deltaX = mDownPositionX - ev.getRawX();
10877                        final float deltaY = mDownPositionY - ev.getRawY();
10878                        final float distanceSquared = deltaX * deltaX + deltaY * deltaY;
10879
10880                        final ViewConfiguration viewConfiguration = ViewConfiguration.get(
10881                                TextView.this.getContext());
10882                        final int touchSlop = viewConfiguration.getScaledTouchSlop();
10883
10884                        if (distanceSquared < touchSlop * touchSlop) {
10885                            if (mActionPopupWindow != null && mActionPopupWindow.isShowing()) {
10886                                // Tapping on the handle dismisses the displayed action popup
10887                                mActionPopupWindow.hide();
10888                            } else {
10889                                showWithActionPopup();
10890                            }
10891                        }
10892                    }
10893                    hideAfterDelay();
10894                    break;
10895
10896                case MotionEvent.ACTION_CANCEL:
10897                    hideAfterDelay();
10898                    break;
10899
10900                default:
10901                    break;
10902            }
10903
10904            return result;
10905        }
10906
10907        @Override
10908        public int getCurrentCursorOffset() {
10909            return TextView.this.getSelectionStart();
10910        }
10911
10912        @Override
10913        public void updateSelection(int offset) {
10914            Selection.setSelection((Spannable) mText, offset);
10915        }
10916
10917        @Override
10918        public void updatePosition(float x, float y) {
10919            positionAtCursorOffset(getOffsetForPosition(x, y), false);
10920        }
10921
10922        @Override
10923        void onHandleMoved() {
10924            super.onHandleMoved();
10925            removeHiderCallback();
10926        }
10927
10928        @Override
10929        public void onDetached() {
10930            super.onDetached();
10931            removeHiderCallback();
10932        }
10933    }
10934
10935    private class SelectionStartHandleView extends HandleView {
10936
10937        public SelectionStartHandleView(Drawable drawableLtr, Drawable drawableRtl) {
10938            super(drawableLtr, drawableRtl);
10939        }
10940
10941        @Override
10942        protected int getHotspotX(Drawable drawable, boolean isRtlRun) {
10943            if (isRtlRun) {
10944                return drawable.getIntrinsicWidth() / 4;
10945            } else {
10946                return (drawable.getIntrinsicWidth() * 3) / 4;
10947            }
10948        }
10949
10950        @Override
10951        public int getCurrentCursorOffset() {
10952            return TextView.this.getSelectionStart();
10953        }
10954
10955        @Override
10956        public void updateSelection(int offset) {
10957            Selection.setSelection((Spannable) mText, offset, getSelectionEnd());
10958            updateDrawable();
10959        }
10960
10961        @Override
10962        public void updatePosition(float x, float y) {
10963            int offset = getOffsetForPosition(x, y);
10964
10965            // Handles can not cross and selection is at least one character
10966            final int selectionEnd = getSelectionEnd();
10967            if (offset >= selectionEnd) offset = Math.max(0, selectionEnd - 1);
10968
10969            positionAtCursorOffset(offset, false);
10970        }
10971
10972        public ActionPopupWindow getActionPopupWindow() {
10973            return mActionPopupWindow;
10974        }
10975    }
10976
10977    private class SelectionEndHandleView extends HandleView {
10978
10979        public SelectionEndHandleView(Drawable drawableLtr, Drawable drawableRtl) {
10980            super(drawableLtr, drawableRtl);
10981        }
10982
10983        @Override
10984        protected int getHotspotX(Drawable drawable, boolean isRtlRun) {
10985            if (isRtlRun) {
10986                return (drawable.getIntrinsicWidth() * 3) / 4;
10987            } else {
10988                return drawable.getIntrinsicWidth() / 4;
10989            }
10990        }
10991
10992        @Override
10993        public int getCurrentCursorOffset() {
10994            return TextView.this.getSelectionEnd();
10995        }
10996
10997        @Override
10998        public void updateSelection(int offset) {
10999            Selection.setSelection((Spannable) mText, getSelectionStart(), offset);
11000            updateDrawable();
11001        }
11002
11003        @Override
11004        public void updatePosition(float x, float y) {
11005            int offset = getOffsetForPosition(x, y);
11006
11007            // Handles can not cross and selection is at least one character
11008            final int selectionStart = getSelectionStart();
11009            if (offset <= selectionStart) offset = Math.min(selectionStart + 1, mText.length());
11010
11011            positionAtCursorOffset(offset, false);
11012        }
11013
11014        public void setActionPopupWindow(ActionPopupWindow actionPopupWindow) {
11015            mActionPopupWindow = actionPopupWindow;
11016        }
11017    }
11018
11019    /**
11020     * A CursorController instance can be used to control a cursor in the text.
11021     * It is not used outside of {@link TextView}.
11022     * @hide
11023     */
11024    private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener {
11025        /**
11026         * Makes the cursor controller visible on screen. Will be drawn by {@link #draw(Canvas)}.
11027         * See also {@link #hide()}.
11028         */
11029        public void show();
11030
11031        /**
11032         * Hide the cursor controller from screen.
11033         * See also {@link #show()}.
11034         */
11035        public void hide();
11036
11037        /**
11038         * Called when the view is detached from window. Perform house keeping task, such as
11039         * stopping Runnable thread that would otherwise keep a reference on the context, thus
11040         * preventing the activity from being recycled.
11041         */
11042        public void onDetached();
11043    }
11044
11045    private class InsertionPointCursorController implements CursorController {
11046        private InsertionHandleView mHandle;
11047
11048        public void show() {
11049            getHandle().show();
11050        }
11051
11052        public void showWithActionPopup() {
11053            getHandle().showWithActionPopup();
11054        }
11055
11056        public void hide() {
11057            if (mHandle != null) {
11058                mHandle.hide();
11059            }
11060        }
11061
11062        public void onTouchModeChanged(boolean isInTouchMode) {
11063            if (!isInTouchMode) {
11064                hide();
11065            }
11066        }
11067
11068        private InsertionHandleView getHandle() {
11069            if (getEditor().mSelectHandleCenter == null) {
11070                getEditor().mSelectHandleCenter = mContext.getResources().getDrawable(
11071                        mTextSelectHandleRes);
11072            }
11073            if (mHandle == null) {
11074                mHandle = new InsertionHandleView(getEditor().mSelectHandleCenter);
11075            }
11076            return mHandle;
11077        }
11078
11079        @Override
11080        public void onDetached() {
11081            final ViewTreeObserver observer = getViewTreeObserver();
11082            observer.removeOnTouchModeChangeListener(this);
11083
11084            if (mHandle != null) mHandle.onDetached();
11085        }
11086    }
11087
11088    private class SelectionModifierCursorController implements CursorController {
11089        private static final int DELAY_BEFORE_REPLACE_ACTION = 200; // milliseconds
11090        // The cursor controller handles, lazily created when shown.
11091        private SelectionStartHandleView mStartHandle;
11092        private SelectionEndHandleView mEndHandle;
11093        // The offsets of that last touch down event. Remembered to start selection there.
11094        private int mMinTouchOffset, mMaxTouchOffset;
11095
11096        // Double tap detection
11097        private long mPreviousTapUpTime = 0;
11098        private float mDownPositionX, mDownPositionY;
11099        private boolean mGestureStayedInTapRegion;
11100
11101        SelectionModifierCursorController() {
11102            resetTouchOffsets();
11103        }
11104
11105        public void show() {
11106            if (isInBatchEditMode()) {
11107                return;
11108            }
11109            initDrawables();
11110            initHandles();
11111            hideInsertionPointCursorController();
11112        }
11113
11114        private void initDrawables() {
11115            if (getEditor().mSelectHandleLeft == null) {
11116                getEditor().mSelectHandleLeft = mContext.getResources().getDrawable(
11117                        mTextSelectHandleLeftRes);
11118            }
11119            if (getEditor().mSelectHandleRight == null) {
11120                getEditor().mSelectHandleRight = mContext.getResources().getDrawable(
11121                        mTextSelectHandleRightRes);
11122            }
11123        }
11124
11125        private void initHandles() {
11126            // Lazy object creation has to be done before updatePosition() is called.
11127            if (mStartHandle == null) {
11128                mStartHandle = new SelectionStartHandleView(getEditor().mSelectHandleLeft, getEditor().mSelectHandleRight);
11129            }
11130            if (mEndHandle == null) {
11131                mEndHandle = new SelectionEndHandleView(getEditor().mSelectHandleRight, getEditor().mSelectHandleLeft);
11132            }
11133
11134            mStartHandle.show();
11135            mEndHandle.show();
11136
11137            // Make sure both left and right handles share the same ActionPopupWindow (so that
11138            // moving any of the handles hides the action popup).
11139            mStartHandle.showActionPopupWindow(DELAY_BEFORE_REPLACE_ACTION);
11140            mEndHandle.setActionPopupWindow(mStartHandle.getActionPopupWindow());
11141
11142            hideInsertionPointCursorController();
11143        }
11144
11145        public void hide() {
11146            if (mStartHandle != null) mStartHandle.hide();
11147            if (mEndHandle != null) mEndHandle.hide();
11148        }
11149
11150        public void onTouchEvent(MotionEvent event) {
11151            // This is done even when the View does not have focus, so that long presses can start
11152            // selection and tap can move cursor from this tap position.
11153            switch (event.getActionMasked()) {
11154                case MotionEvent.ACTION_DOWN:
11155                    final float x = event.getX();
11156                    final float y = event.getY();
11157
11158                    // Remember finger down position, to be able to start selection from there
11159                    mMinTouchOffset = mMaxTouchOffset = getOffsetForPosition(x, y);
11160
11161                    // Double tap detection
11162                    if (mGestureStayedInTapRegion) {
11163                        long duration = SystemClock.uptimeMillis() - mPreviousTapUpTime;
11164                        if (duration <= ViewConfiguration.getDoubleTapTimeout()) {
11165                            final float deltaX = x - mDownPositionX;
11166                            final float deltaY = y - mDownPositionY;
11167                            final float distanceSquared = deltaX * deltaX + deltaY * deltaY;
11168
11169                            ViewConfiguration viewConfiguration = ViewConfiguration.get(
11170                                    TextView.this.getContext());
11171                            int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop();
11172                            boolean stayedInArea = distanceSquared < doubleTapSlop * doubleTapSlop;
11173
11174                            if (stayedInArea && isPositionOnText(x, y)) {
11175                                startSelectionActionMode();
11176                                getEditor().mDiscardNextActionUp = true;
11177                            }
11178                        }
11179                    }
11180
11181                    mDownPositionX = x;
11182                    mDownPositionY = y;
11183                    mGestureStayedInTapRegion = true;
11184                    break;
11185
11186                case MotionEvent.ACTION_POINTER_DOWN:
11187                case MotionEvent.ACTION_POINTER_UP:
11188                    // Handle multi-point gestures. Keep min and max offset positions.
11189                    // Only activated for devices that correctly handle multi-touch.
11190                    if (mContext.getPackageManager().hasSystemFeature(
11191                            PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) {
11192                        updateMinAndMaxOffsets(event);
11193                    }
11194                    break;
11195
11196                case MotionEvent.ACTION_MOVE:
11197                    if (mGestureStayedInTapRegion) {
11198                        final float deltaX = event.getX() - mDownPositionX;
11199                        final float deltaY = event.getY() - mDownPositionY;
11200                        final float distanceSquared = deltaX * deltaX + deltaY * deltaY;
11201
11202                        final ViewConfiguration viewConfiguration = ViewConfiguration.get(
11203                                TextView.this.getContext());
11204                        int doubleTapTouchSlop = viewConfiguration.getScaledDoubleTapTouchSlop();
11205
11206                        if (distanceSquared > doubleTapTouchSlop * doubleTapTouchSlop) {
11207                            mGestureStayedInTapRegion = false;
11208                        }
11209                    }
11210                    break;
11211
11212                case MotionEvent.ACTION_UP:
11213                    mPreviousTapUpTime = SystemClock.uptimeMillis();
11214                    break;
11215            }
11216        }
11217
11218        /**
11219         * @param event
11220         */
11221        private void updateMinAndMaxOffsets(MotionEvent event) {
11222            int pointerCount = event.getPointerCount();
11223            for (int index = 0; index < pointerCount; index++) {
11224                int offset = getOffsetForPosition(event.getX(index), event.getY(index));
11225                if (offset < mMinTouchOffset) mMinTouchOffset = offset;
11226                if (offset > mMaxTouchOffset) mMaxTouchOffset = offset;
11227            }
11228        }
11229
11230        public int getMinTouchOffset() {
11231            return mMinTouchOffset;
11232        }
11233
11234        public int getMaxTouchOffset() {
11235            return mMaxTouchOffset;
11236        }
11237
11238        public void resetTouchOffsets() {
11239            mMinTouchOffset = mMaxTouchOffset = -1;
11240        }
11241
11242        /**
11243         * @return true iff this controller is currently used to move the selection start.
11244         */
11245        public boolean isSelectionStartDragged() {
11246            return mStartHandle != null && mStartHandle.isDragging();
11247        }
11248
11249        public void onTouchModeChanged(boolean isInTouchMode) {
11250            if (!isInTouchMode) {
11251                hide();
11252            }
11253        }
11254
11255        @Override
11256        public void onDetached() {
11257            final ViewTreeObserver observer = getViewTreeObserver();
11258            observer.removeOnTouchModeChangeListener(this);
11259
11260            if (mStartHandle != null) mStartHandle.onDetached();
11261            if (mEndHandle != null) mEndHandle.onDetached();
11262        }
11263    }
11264
11265    static class InputContentType {
11266        int imeOptions = EditorInfo.IME_NULL;
11267        String privateImeOptions;
11268        CharSequence imeActionLabel;
11269        int imeActionId;
11270        Bundle extras;
11271        OnEditorActionListener onEditorActionListener;
11272        boolean enterDown;
11273    }
11274
11275    static class InputMethodState {
11276        Rect mCursorRectInWindow = new Rect();
11277        RectF mTmpRectF = new RectF();
11278        float[] mTmpOffset = new float[2];
11279        ExtractedTextRequest mExtracting;
11280        final ExtractedText mTmpExtracted = new ExtractedText();
11281        int mBatchEditNesting;
11282        boolean mCursorChanged;
11283        boolean mSelectionModeChanged;
11284        boolean mContentChanged;
11285        int mChangedStart, mChangedEnd, mChangedDelta;
11286    }
11287
11288    private class Editor {
11289        // Cursor Controllers.
11290        InsertionPointCursorController mInsertionPointCursorController;
11291        SelectionModifierCursorController mSelectionModifierCursorController;
11292        ActionMode mSelectionActionMode;
11293        boolean mInsertionControllerEnabled;
11294        boolean mSelectionControllerEnabled;
11295
11296        // Used to highlight a word when it is corrected by the IME
11297        CorrectionHighlighter mCorrectionHighlighter;
11298
11299        InputContentType mInputContentType;
11300        InputMethodState mInputMethodState;
11301
11302        DisplayList mTextDisplayList;
11303
11304        boolean mFrozenWithFocus;
11305        boolean mSelectionMoved;
11306        boolean mTouchFocusSelected;
11307
11308        KeyListener mKeyListener;
11309        int mInputType = EditorInfo.TYPE_NULL;
11310
11311        boolean mDiscardNextActionUp;
11312        boolean mIgnoreActionUpEvent;
11313
11314        long mShowCursor;
11315        Blink mBlink;
11316
11317        boolean mCursorVisible = true;
11318        boolean mSelectAllOnFocus;
11319        boolean mTextIsSelectable;
11320
11321        CharSequence mError;
11322        boolean mErrorWasChanged;
11323        ErrorPopup mErrorPopup;
11324        /**
11325         * This flag is set if the TextView tries to display an error before it
11326         * is attached to the window (so its position is still unknown).
11327         * It causes the error to be shown later, when onAttachedToWindow()
11328         * is called.
11329         */
11330        boolean mShowErrorAfterAttach;
11331
11332        boolean mInBatchEditControllers;
11333
11334        SuggestionsPopupWindow mSuggestionsPopupWindow;
11335        SuggestionRangeSpan mSuggestionRangeSpan;
11336        Runnable mShowSuggestionRunnable;
11337
11338        final Drawable[] mCursorDrawable = new Drawable[2];
11339        int mCursorCount; // Current number of used mCursorDrawable: 0 (resource=0), 1 or 2 (split)
11340
11341        Drawable mSelectHandleLeft;
11342        Drawable mSelectHandleRight;
11343        Drawable mSelectHandleCenter;
11344
11345        // Global listener that detects changes in the global position of the TextView
11346        PositionListener mPositionListener;
11347
11348        float mLastDownPositionX, mLastDownPositionY;
11349        Callback mCustomSelectionActionModeCallback;
11350
11351        // Set when this TextView gained focus with some text selected. Will start selection mode.
11352        boolean mCreatedWithASelection;
11353
11354        WordIterator mWordIterator;
11355        SpellChecker mSpellChecker;
11356
11357        void onAttachedToWindow() {
11358            final ViewTreeObserver observer = getViewTreeObserver();
11359            // No need to create the controller.
11360            // The get method will add the listener on controller creation.
11361            if (mInsertionPointCursorController != null) {
11362                observer.addOnTouchModeChangeListener(mInsertionPointCursorController);
11363            }
11364            if (mSelectionModifierCursorController != null) {
11365                observer.addOnTouchModeChangeListener(mSelectionModifierCursorController);
11366            }
11367            updateSpellCheckSpans(0, mText.length(), true /* create the spell checker if needed */);
11368        }
11369
11370        void onDetachedFromWindow() {
11371            if (mError != null) {
11372                hideError();
11373            }
11374
11375            if (mBlink != null) {
11376                mBlink.removeCallbacks(mBlink);
11377            }
11378
11379            if (mInsertionPointCursorController != null) {
11380                mInsertionPointCursorController.onDetached();
11381            }
11382
11383            if (mSelectionModifierCursorController != null) {
11384                mSelectionModifierCursorController.onDetached();
11385            }
11386
11387            if (mShowSuggestionRunnable != null) {
11388                removeCallbacks(mShowSuggestionRunnable);
11389            }
11390
11391            invalidateTextDisplayList();
11392
11393            if (mSpellChecker != null) {
11394                mSpellChecker.closeSession();
11395                // Forces the creation of a new SpellChecker next time this window is created.
11396                // Will handle the cases where the settings has been changed in the meantime.
11397                mSpellChecker = null;
11398            }
11399
11400            hideControllers();
11401        }
11402
11403        void onScreenStateChanged(int screenState) {
11404            switch (screenState) {
11405                case SCREEN_STATE_ON:
11406                    resumeBlink();
11407                    break;
11408                case SCREEN_STATE_OFF:
11409                    suspendBlink();
11410                    break;
11411            }
11412        }
11413
11414        private void suspendBlink() {
11415            if (mBlink != null) {
11416                mBlink.cancel();
11417            }
11418        }
11419
11420        private void resumeBlink() {
11421            if (mBlink != null) {
11422                mBlink.uncancel();
11423                makeBlink();
11424            }
11425        }
11426
11427        void adjustInputType(boolean password, boolean passwordInputType,
11428                boolean webPasswordInputType, boolean numberPasswordInputType) {
11429            // mInputType has been set from inputType, possibly modified by mInputMethod.
11430            // Specialize mInputType to [web]password if we have a text class and the original input
11431            // type was a password.
11432            if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
11433                if (password || passwordInputType) {
11434                    mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
11435                            | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD;
11436                }
11437                if (webPasswordInputType) {
11438                    mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
11439                            | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD;
11440                }
11441            } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) {
11442                if (numberPasswordInputType) {
11443                    mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
11444                            | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD;
11445                }
11446            }
11447        }
11448
11449        void setFrame() {
11450            if (mErrorPopup != null) {
11451                TextView tv = (TextView) mErrorPopup.getContentView();
11452                chooseSize(mErrorPopup, mError, tv);
11453                mErrorPopup.update(TextView.this, getErrorX(), getErrorY(),
11454                        mErrorPopup.getWidth(), mErrorPopup.getHeight());
11455            }
11456        }
11457
11458        void onFocusChanged(boolean focused, int direction) {
11459            mShowCursor = SystemClock.uptimeMillis();
11460            ensureEndedBatchEdit();
11461
11462            if (focused) {
11463                int selStart = getSelectionStart();
11464                int selEnd = getSelectionEnd();
11465
11466                // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection
11467                // mode for these, unless there was a specific selection already started.
11468                final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 &&
11469                        selEnd == mText.length();
11470
11471                mCreatedWithASelection = mFrozenWithFocus && hasSelection() && !isFocusHighlighted;
11472
11473                if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) {
11474                    // If a tap was used to give focus to that view, move cursor at tap position.
11475                    // Has to be done before onTakeFocus, which can be overloaded.
11476                    final int lastTapPosition = getLastTapPosition();
11477                    if (lastTapPosition >= 0) {
11478                        Selection.setSelection((Spannable) mText, lastTapPosition);
11479                    }
11480
11481                    // Note this may have to be moved out of the Editor class
11482                    if (mMovement != null) {
11483                        mMovement.onTakeFocus(TextView.this, (Spannable) mText, direction);
11484                    }
11485
11486                    // The DecorView does not have focus when the 'Done' ExtractEditText button is
11487                    // pressed. Since it is the ViewAncestor's mView, it requests focus before
11488                    // ExtractEditText clears focus, which gives focus to the ExtractEditText.
11489                    // This special case ensure that we keep current selection in that case.
11490                    // It would be better to know why the DecorView does not have focus at that time.
11491                    if (((TextView.this instanceof ExtractEditText) || mSelectionMoved) &&
11492                            selStart >= 0 && selEnd >= 0) {
11493                        /*
11494                         * Someone intentionally set the selection, so let them
11495                         * do whatever it is that they wanted to do instead of
11496                         * the default on-focus behavior.  We reset the selection
11497                         * here instead of just skipping the onTakeFocus() call
11498                         * because some movement methods do something other than
11499                         * just setting the selection in theirs and we still
11500                         * need to go through that path.
11501                         */
11502                        Selection.setSelection((Spannable) mText, selStart, selEnd);
11503                    }
11504
11505                    if (mSelectAllOnFocus) {
11506                        selectAll();
11507                    }
11508
11509                    mTouchFocusSelected = true;
11510                }
11511
11512                mFrozenWithFocus = false;
11513                mSelectionMoved = false;
11514
11515                if (mError != null) {
11516                    showError();
11517                }
11518
11519                makeBlink();
11520            } else {
11521                if (mError != null) {
11522                    hideError();
11523                }
11524                // Don't leave us in the middle of a batch edit.
11525                onEndBatchEdit();
11526
11527                if (TextView.this instanceof ExtractEditText) {
11528                    // terminateTextSelectionMode removes selection, which we want to keep when
11529                    // ExtractEditText goes out of focus.
11530                    final int selStart = getSelectionStart();
11531                    final int selEnd = getSelectionEnd();
11532                    hideControllers();
11533                    Selection.setSelection((Spannable) mText, selStart, selEnd);
11534                } else {
11535                    hideControllers();
11536                    downgradeEasyCorrectionSpans();
11537                }
11538
11539                // No need to create the controller
11540                if (mSelectionModifierCursorController != null) {
11541                    mSelectionModifierCursorController.resetTouchOffsets();
11542                }
11543            }
11544        }
11545
11546        void sendOnTextChanged(int start, int after) {
11547            updateSpellCheckSpans(start, start + after, false);
11548            invalidateTextDisplayList();
11549
11550            // Hide the controllers as soon as text is modified (typing, procedural...)
11551            // We do not hide the span controllers, since they can be added when a new text is
11552            // inserted into the text view (voice IME).
11553            hideCursorControllers();
11554        }
11555
11556        private int getLastTapPosition() {
11557            // No need to create the controller at that point, no last tap position saved
11558            if (mSelectionModifierCursorController != null) {
11559                int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset();
11560                if (lastTapPosition >= 0) {
11561                    // Safety check, should not be possible.
11562                    if (lastTapPosition > mText.length()) {
11563                        Log.e(LOG_TAG, "Invalid tap focus position (" + lastTapPosition + " vs "
11564                                + mText.length() + ")");
11565                        lastTapPosition = mText.length();
11566                    }
11567                    return lastTapPosition;
11568                }
11569            }
11570
11571            return -1;
11572        }
11573
11574        void onWindowFocusChanged(boolean hasWindowFocus) {
11575            if (hasWindowFocus) {
11576                if (mBlink != null) {
11577                    mBlink.uncancel();
11578                    makeBlink();
11579                }
11580            } else {
11581                if (mBlink != null) {
11582                    mBlink.cancel();
11583                }
11584                if (mInputContentType != null) {
11585                    mInputContentType.enterDown = false;
11586                }
11587                // Order matters! Must be done before onParentLostFocus to rely on isShowingUp
11588                hideControllers();
11589                if (mSuggestionsPopupWindow != null) {
11590                    mSuggestionsPopupWindow.onParentLostFocus();
11591                }
11592
11593                // Don't leave us in the middle of a batch edit.
11594                onEndBatchEdit();
11595            }
11596        }
11597
11598        void onTouchEvent(MotionEvent event) {
11599            if (hasSelectionController()) {
11600                getSelectionController().onTouchEvent(event);
11601            }
11602
11603            if (mShowSuggestionRunnable != null) {
11604                removeCallbacks(mShowSuggestionRunnable);
11605                mShowSuggestionRunnable = null;
11606            }
11607
11608            if (event.getActionMasked() == MotionEvent.ACTION_DOWN) {
11609                mLastDownPositionX = event.getX();
11610                mLastDownPositionY = event.getY();
11611
11612                // Reset this state; it will be re-set if super.onTouchEvent
11613                // causes focus to move to the view.
11614                mTouchFocusSelected = false;
11615                mIgnoreActionUpEvent = false;
11616            }
11617        }
11618
11619        void onDraw(Canvas canvas, Layout layout, Path highlight, int cursorOffsetVertical) {
11620            final int selectionStart = getSelectionStart();
11621            final int selectionEnd = getSelectionEnd();
11622
11623            final InputMethodState ims = mInputMethodState;
11624            if (ims != null && ims.mBatchEditNesting == 0) {
11625                InputMethodManager imm = InputMethodManager.peekInstance();
11626                if (imm != null) {
11627                    if (imm.isActive(TextView.this)) {
11628                        boolean reported = false;
11629                        if (ims.mContentChanged || ims.mSelectionModeChanged) {
11630                            // We are in extract mode and the content has changed
11631                            // in some way... just report complete new text to the
11632                            // input method.
11633                            reported = reportExtractedText();
11634                        }
11635                        if (!reported && highlight != null) {
11636                            int candStart = -1;
11637                            int candEnd = -1;
11638                            if (mText instanceof Spannable) {
11639                                Spannable sp = (Spannable)mText;
11640                                candStart = EditableInputConnection.getComposingSpanStart(sp);
11641                                candEnd = EditableInputConnection.getComposingSpanEnd(sp);
11642                            }
11643                            imm.updateSelection(TextView.this,
11644                                    selectionStart, selectionEnd, candStart, candEnd);
11645                        }
11646                    }
11647
11648                    if (imm.isWatchingCursor(TextView.this) && highlight != null) {
11649                        highlight.computeBounds(ims.mTmpRectF, true);
11650                        ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0;
11651
11652                        canvas.getMatrix().mapPoints(ims.mTmpOffset);
11653                        ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]);
11654
11655                        ims.mTmpRectF.offset(0, cursorOffsetVertical);
11656
11657                        ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5),
11658                                (int)(ims.mTmpRectF.top + 0.5),
11659                                (int)(ims.mTmpRectF.right + 0.5),
11660                                (int)(ims.mTmpRectF.bottom + 0.5));
11661
11662                        imm.updateCursor(TextView.this,
11663                                ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top,
11664                                ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom);
11665                    }
11666                }
11667            }
11668
11669            if (mCorrectionHighlighter != null) {
11670                mCorrectionHighlighter.draw(canvas, cursorOffsetVertical);
11671            }
11672
11673            if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) {
11674                drawCursor(canvas, cursorOffsetVertical);
11675                // Rely on the drawable entirely, do not draw the cursor line.
11676                // Has to be done after the IMM related code above which relies on the highlight.
11677                highlight = null;
11678            }
11679
11680            if (canHaveDisplayList() && canvas.isHardwareAccelerated()) {
11681                drawHardwareAccelerated(canvas, layout, highlight, cursorOffsetVertical);
11682            } else {
11683                layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
11684            }
11685
11686            if (mMarquee != null && mMarquee.shouldDrawGhost()) {
11687                canvas.translate((int) mMarquee.getGhostOffset(), 0.0f);
11688                layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
11689            }
11690        }
11691
11692        private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight,
11693                int cursorOffsetVertical) {
11694            final int width = mRight - mLeft;
11695            final int height = mBottom - mTop;
11696
11697            final long lineRange = layout.getLineRangeForDraw(canvas);
11698            int firstLine = TextUtils.unpackRangeStartFromLong(lineRange);
11699            int lastLine = TextUtils.unpackRangeEndFromLong(lineRange);
11700            if (lastLine < 0) return;
11701
11702            layout.drawBackground(canvas, highlight, mHighlightPaint, cursorOffsetVertical,
11703                    firstLine, lastLine);
11704
11705            if (mTextDisplayList == null || !mTextDisplayList.isValid()) {
11706                if (mTextDisplayList == null) {
11707                    mTextDisplayList = getHardwareRenderer().createDisplayList("Text");
11708                }
11709
11710                final HardwareCanvas hardwareCanvas = mTextDisplayList.start();
11711                try {
11712                    hardwareCanvas.setViewport(width, height);
11713                    // The dirty rect should always be null for a display list
11714                    hardwareCanvas.onPreDraw(null);
11715                    hardwareCanvas.translate(-mScrollX, -mScrollY);
11716                    layout.drawText(hardwareCanvas, firstLine, lastLine);
11717                    //layout.draw(hardwareCanvas, highlight, mHighlightPaint, cursorOffsetVertical);
11718                    hardwareCanvas.translate(mScrollX, mScrollY);
11719                } finally {
11720                    hardwareCanvas.onPostDraw();
11721                    mTextDisplayList.end();
11722                }
11723            }
11724            canvas.translate(mScrollX, mScrollY);
11725            ((HardwareCanvas) canvas).drawDisplayList(mTextDisplayList, width, height, null,
11726                    DisplayList.FLAG_CLIP_CHILDREN);
11727            canvas.translate(-mScrollX, -mScrollY);
11728        }
11729
11730        private void drawCursor(Canvas canvas, int cursorOffsetVertical) {
11731            final boolean translate = cursorOffsetVertical != 0;
11732            if (translate) canvas.translate(0, cursorOffsetVertical);
11733            for (int i = 0; i < getEditor().mCursorCount; i++) {
11734                mCursorDrawable[i].draw(canvas);
11735            }
11736            if (translate) canvas.translate(0, -cursorOffsetVertical);
11737        }
11738
11739        private void invalidateTextDisplayList() {
11740            if (mTextDisplayList != null) mTextDisplayList.invalidate();
11741        }
11742
11743        private void updateCursorsPositions() {
11744            if (mCursorDrawableRes == 0) {
11745                mCursorCount = 0;
11746                return;
11747            }
11748
11749            final int offset = getSelectionStart();
11750            final int line = mLayout.getLineForOffset(offset);
11751            final int top = mLayout.getLineTop(line);
11752            final int bottom = mLayout.getLineTop(line + 1);
11753
11754            mCursorCount = mLayout.isLevelBoundary(offset) ? 2 : 1;
11755
11756            int middle = bottom;
11757            if (mCursorCount == 2) {
11758                // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)}
11759                middle = (top + bottom) >> 1;
11760            }
11761
11762            updateCursorPosition(0, top, middle, mLayout.getPrimaryHorizontal(offset));
11763
11764            if (mCursorCount == 2) {
11765                updateCursorPosition(1, middle, bottom, mLayout.getSecondaryHorizontal(offset));
11766            }
11767        }
11768
11769        private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) {
11770            if (mCursorDrawable[cursorIndex] == null)
11771                mCursorDrawable[cursorIndex] = mContext.getResources().getDrawable(mCursorDrawableRes);
11772
11773            if (mTempRect == null) mTempRect = new Rect();
11774            mCursorDrawable[cursorIndex].getPadding(mTempRect);
11775            final int width = mCursorDrawable[cursorIndex].getIntrinsicWidth();
11776            horizontal = Math.max(0.5f, horizontal - 0.5f);
11777            final int left = (int) (horizontal) - mTempRect.left;
11778            mCursorDrawable[cursorIndex].setBounds(left, top - mTempRect.top, left + width,
11779                    bottom + mTempRect.bottom);
11780        }
11781    }
11782}
11783