TextView.java revision 06e1ec6462763a2f12ba5fb1c1c826bf393bfacd 
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().mTextDisplayListIsValid = false;
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    /**
2083     * Gets the autolink mask of the text.  See {@link
2084     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2085     * possible values.
2086     *
2087     * @attr ref android.R.styleable#TextView_autoLink
2088     */
2089    public final int getAutoLinkMask() {
2090        return mAutoLinkMask;
2091    }
2092
2093    /**
2094     * Sets the text color, size, style, hint color, and highlight color
2095     * from the specified TextAppearance resource.
2096     */
2097    public void setTextAppearance(Context context, int resid) {
2098        TypedArray appearance =
2099            context.obtainStyledAttributes(resid,
2100                                           com.android.internal.R.styleable.TextAppearance);
2101
2102        int color;
2103        ColorStateList colors;
2104        int ts;
2105
2106        color = appearance.getColor(com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
2107        if (color != 0) {
2108            setHighlightColor(color);
2109        }
2110
2111        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2112                                              TextAppearance_textColor);
2113        if (colors != null) {
2114            setTextColor(colors);
2115        }
2116
2117        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
2118                                              TextAppearance_textSize, 0);
2119        if (ts != 0) {
2120            setRawTextSize(ts);
2121        }
2122
2123        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2124                                              TextAppearance_textColorHint);
2125        if (colors != null) {
2126            setHintTextColor(colors);
2127        }
2128
2129        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2130                                              TextAppearance_textColorLink);
2131        if (colors != null) {
2132            setLinkTextColor(colors);
2133        }
2134
2135        int typefaceIndex, styleIndex;
2136
2137        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
2138                                          TextAppearance_typeface, -1);
2139        styleIndex = appearance.getInt(com.android.internal.R.styleable.
2140                                       TextAppearance_textStyle, -1);
2141
2142        setTypefaceByIndex(typefaceIndex, styleIndex);
2143
2144        if (appearance.getBoolean(com.android.internal.R.styleable.TextAppearance_textAllCaps,
2145                false)) {
2146            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2147        }
2148
2149        appearance.recycle();
2150    }
2151
2152    /**
2153     * @return the size (in pixels) of the default text size in this TextView.
2154     */
2155    public float getTextSize() {
2156        return mTextPaint.getTextSize();
2157    }
2158
2159    /**
2160     * Set the default text size to the given value, interpreted as "scaled
2161     * pixel" units.  This size is adjusted based on the current density and
2162     * user font size preference.
2163     *
2164     * @param size The scaled pixel size.
2165     *
2166     * @attr ref android.R.styleable#TextView_textSize
2167     */
2168    @android.view.RemotableViewMethod
2169    public void setTextSize(float size) {
2170        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2171    }
2172
2173    /**
2174     * Set the default text size to a given unit and value.  See {@link
2175     * TypedValue} for the possible dimension units.
2176     *
2177     * @param unit The desired dimension unit.
2178     * @param size The desired size in the given units.
2179     *
2180     * @attr ref android.R.styleable#TextView_textSize
2181     */
2182    public void setTextSize(int unit, float size) {
2183        Context c = getContext();
2184        Resources r;
2185
2186        if (c == null)
2187            r = Resources.getSystem();
2188        else
2189            r = c.getResources();
2190
2191        setRawTextSize(TypedValue.applyDimension(
2192            unit, size, r.getDisplayMetrics()));
2193    }
2194
2195    private void setRawTextSize(float size) {
2196        if (size != mTextPaint.getTextSize()) {
2197            mTextPaint.setTextSize(size);
2198
2199            if (mLayout != null) {
2200                nullLayouts();
2201                requestLayout();
2202                invalidate();
2203            }
2204        }
2205    }
2206
2207    /**
2208     * @return the extent by which text is currently being stretched
2209     * horizontally.  This will usually be 1.
2210     */
2211    public float getTextScaleX() {
2212        return mTextPaint.getTextScaleX();
2213    }
2214
2215    /**
2216     * Sets the extent by which text should be stretched horizontally.
2217     *
2218     * @attr ref android.R.styleable#TextView_textScaleX
2219     */
2220    @android.view.RemotableViewMethod
2221    public void setTextScaleX(float size) {
2222        if (size != mTextPaint.getTextScaleX()) {
2223            mUserSetTextScaleX = true;
2224            mTextPaint.setTextScaleX(size);
2225
2226            if (mLayout != null) {
2227                nullLayouts();
2228                requestLayout();
2229                invalidate();
2230            }
2231        }
2232    }
2233
2234    /**
2235     * Sets the typeface and style in which the text should be displayed.
2236     * Note that not all Typeface families actually have bold and italic
2237     * variants, so you may need to use
2238     * {@link #setTypeface(Typeface, int)} to get the appearance
2239     * that you actually want.
2240     *
2241     * @attr ref android.R.styleable#TextView_typeface
2242     * @attr ref android.R.styleable#TextView_textStyle
2243     */
2244    public void setTypeface(Typeface tf) {
2245        if (mTextPaint.getTypeface() != tf) {
2246            mTextPaint.setTypeface(tf);
2247
2248            if (mLayout != null) {
2249                nullLayouts();
2250                requestLayout();
2251                invalidate();
2252            }
2253        }
2254    }
2255
2256    /**
2257     * @return the current typeface and style in which the text is being
2258     * displayed.
2259     */
2260    public Typeface getTypeface() {
2261        return mTextPaint.getTypeface();
2262    }
2263
2264    /**
2265     * Sets the text color for all the states (normal, selected,
2266     * focused) to be this color.
2267     *
2268     * @attr ref android.R.styleable#TextView_textColor
2269     */
2270    @android.view.RemotableViewMethod
2271    public void setTextColor(int color) {
2272        mTextColor = ColorStateList.valueOf(color);
2273        updateTextColors();
2274    }
2275
2276    /**
2277     * Sets the text color.
2278     *
2279     * @attr ref android.R.styleable#TextView_textColor
2280     */
2281    public void setTextColor(ColorStateList colors) {
2282        if (colors == null) {
2283            throw new NullPointerException();
2284        }
2285
2286        mTextColor = colors;
2287        updateTextColors();
2288    }
2289
2290    /**
2291     * Return the set of text colors.
2292     *
2293     * @return Returns the set of text colors.
2294     */
2295    public final ColorStateList getTextColors() {
2296        return mTextColor;
2297    }
2298
2299    /**
2300     * <p>Return the current color selected for normal text.</p>
2301     *
2302     * @return Returns the current text color.
2303     */
2304    public final int getCurrentTextColor() {
2305        return mCurTextColor;
2306    }
2307
2308    /**
2309     * Sets the color used to display the selection highlight.
2310     *
2311     * @attr ref android.R.styleable#TextView_textColorHighlight
2312     */
2313    @android.view.RemotableViewMethod
2314    public void setHighlightColor(int color) {
2315        if (mHighlightColor != color) {
2316            mHighlightColor = color;
2317            if (mEditor != null) getEditor().mTextDisplayListIsValid = false;
2318            invalidate();
2319        }
2320    }
2321
2322    /**
2323     * Gives the text a shadow of the specified radius and color, the specified
2324     * distance from its normal position.
2325     *
2326     * @attr ref android.R.styleable#TextView_shadowColor
2327     * @attr ref android.R.styleable#TextView_shadowDx
2328     * @attr ref android.R.styleable#TextView_shadowDy
2329     * @attr ref android.R.styleable#TextView_shadowRadius
2330     */
2331    public void setShadowLayer(float radius, float dx, float dy, int color) {
2332        mTextPaint.setShadowLayer(radius, dx, dy, color);
2333
2334        mShadowRadius = radius;
2335        mShadowDx = dx;
2336        mShadowDy = dy;
2337
2338        if (mEditor != null) getEditor().mTextDisplayListIsValid = false;
2339        invalidate();
2340    }
2341
2342    /**
2343     * @return the base paint used for the text.  Please use this only to
2344     * consult the Paint's properties and not to change them.
2345     */
2346    public TextPaint getPaint() {
2347        return mTextPaint;
2348    }
2349
2350    /**
2351     * Sets the autolink mask of the text.  See {@link
2352     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2353     * possible values.
2354     *
2355     * @attr ref android.R.styleable#TextView_autoLink
2356     */
2357    @android.view.RemotableViewMethod
2358    public final void setAutoLinkMask(int mask) {
2359        mAutoLinkMask = mask;
2360    }
2361
2362    /**
2363     * Sets whether the movement method will automatically be set to
2364     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2365     * set to nonzero and links are detected in {@link #setText}.
2366     * The default is true.
2367     *
2368     * @attr ref android.R.styleable#TextView_linksClickable
2369     */
2370    @android.view.RemotableViewMethod
2371    public final void setLinksClickable(boolean whether) {
2372        mLinksClickable = whether;
2373    }
2374
2375    /**
2376     * Returns whether the movement method will automatically be set to
2377     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2378     * set to nonzero and links are detected in {@link #setText}.
2379     * The default is true.
2380     *
2381     * @attr ref android.R.styleable#TextView_linksClickable
2382     */
2383    public final boolean getLinksClickable() {
2384        return mLinksClickable;
2385    }
2386
2387    /**
2388     * Returns the list of URLSpans attached to the text
2389     * (by {@link Linkify} or otherwise) if any.  You can call
2390     * {@link URLSpan#getURL} on them to find where they link to
2391     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
2392     * to find the region of the text they are attached to.
2393     */
2394    public URLSpan[] getUrls() {
2395        if (mText instanceof Spanned) {
2396            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
2397        } else {
2398            return new URLSpan[0];
2399        }
2400    }
2401
2402    /**
2403     * Sets the color of the hint text.
2404     *
2405     * @attr ref android.R.styleable#TextView_textColorHint
2406     */
2407    @android.view.RemotableViewMethod
2408    public final void setHintTextColor(int color) {
2409        mHintTextColor = ColorStateList.valueOf(color);
2410        updateTextColors();
2411    }
2412
2413    /**
2414     * Sets the color of the hint text.
2415     *
2416     * @attr ref android.R.styleable#TextView_textColorHint
2417     */
2418    public final void setHintTextColor(ColorStateList colors) {
2419        mHintTextColor = colors;
2420        updateTextColors();
2421    }
2422
2423    /**
2424     * <p>Return the color used to paint the hint text.</p>
2425     *
2426     * @return Returns the list of hint text colors.
2427     */
2428    public final ColorStateList getHintTextColors() {
2429        return mHintTextColor;
2430    }
2431
2432    /**
2433     * <p>Return the current color selected to paint the hint text.</p>
2434     *
2435     * @return Returns the current hint text color.
2436     */
2437    public final int getCurrentHintTextColor() {
2438        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
2439    }
2440
2441    /**
2442     * Sets the color of links in the text.
2443     *
2444     * @attr ref android.R.styleable#TextView_textColorLink
2445     */
2446    @android.view.RemotableViewMethod
2447    public final void setLinkTextColor(int color) {
2448        mLinkTextColor = ColorStateList.valueOf(color);
2449        updateTextColors();
2450    }
2451
2452    /**
2453     * Sets the color of links in the text.
2454     *
2455     * @attr ref android.R.styleable#TextView_textColorLink
2456     */
2457    public final void setLinkTextColor(ColorStateList colors) {
2458        mLinkTextColor = colors;
2459        updateTextColors();
2460    }
2461
2462    /**
2463     * <p>Returns the color used to paint links in the text.</p>
2464     *
2465     * @return Returns the list of link text colors.
2466     */
2467    public final ColorStateList getLinkTextColors() {
2468        return mLinkTextColor;
2469    }
2470
2471    /**
2472     * Sets the horizontal alignment of the text and the
2473     * vertical gravity that will be used when there is extra space
2474     * in the TextView beyond what is required for the text itself.
2475     *
2476     * @see android.view.Gravity
2477     * @attr ref android.R.styleable#TextView_gravity
2478     */
2479    public void setGravity(int gravity) {
2480        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
2481            gravity |= Gravity.START;
2482        }
2483        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
2484            gravity |= Gravity.TOP;
2485        }
2486
2487        boolean newLayout = false;
2488
2489        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
2490            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
2491            newLayout = true;
2492        }
2493
2494        if (gravity != mGravity) {
2495            invalidate();
2496            mLayoutAlignment = null;
2497        }
2498
2499        mGravity = gravity;
2500
2501        if (mLayout != null && newLayout) {
2502            // XXX this is heavy-handed because no actual content changes.
2503            int want = mLayout.getWidth();
2504            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
2505
2506            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
2507                          mRight - mLeft - getCompoundPaddingLeft() -
2508                          getCompoundPaddingRight(), true);
2509        }
2510    }
2511
2512    /**
2513     * Returns the horizontal and vertical alignment of this TextView.
2514     *
2515     * @see android.view.Gravity
2516     * @attr ref android.R.styleable#TextView_gravity
2517     */
2518    public int getGravity() {
2519        return mGravity;
2520    }
2521
2522    /**
2523     * @return the flags on the Paint being used to display the text.
2524     * @see Paint#getFlags
2525     */
2526    public int getPaintFlags() {
2527        return mTextPaint.getFlags();
2528    }
2529
2530    /**
2531     * Sets flags on the Paint being used to display the text and
2532     * reflows the text if they are different from the old flags.
2533     * @see Paint#setFlags
2534     */
2535    @android.view.RemotableViewMethod
2536    public void setPaintFlags(int flags) {
2537        if (mTextPaint.getFlags() != flags) {
2538            mTextPaint.setFlags(flags);
2539
2540            if (mLayout != null) {
2541                nullLayouts();
2542                requestLayout();
2543                invalidate();
2544            }
2545        }
2546    }
2547
2548    /**
2549     * Sets whether the text should be allowed to be wider than the
2550     * View is.  If false, it will be wrapped to the width of the View.
2551     *
2552     * @attr ref android.R.styleable#TextView_scrollHorizontally
2553     */
2554    public void setHorizontallyScrolling(boolean whether) {
2555        if (mHorizontallyScrolling != whether) {
2556            mHorizontallyScrolling = whether;
2557
2558            if (mLayout != null) {
2559                nullLayouts();
2560                requestLayout();
2561                invalidate();
2562            }
2563        }
2564    }
2565
2566    /**
2567     * Returns whether the text is allowed to be wider than the View is.
2568     * If false, the text will be wrapped to the width of the View.
2569     *
2570     * @attr ref android.R.styleable#TextView_scrollHorizontally
2571     * @hide
2572     */
2573    public boolean getHorizontallyScrolling() {
2574        return mHorizontallyScrolling;
2575    }
2576
2577    /**
2578     * Makes the TextView at least this many lines tall.
2579     *
2580     * Setting this value overrides any other (minimum) height setting. A single line TextView will
2581     * set this value to 1.
2582     *
2583     * @attr ref android.R.styleable#TextView_minLines
2584     */
2585    @android.view.RemotableViewMethod
2586    public void setMinLines(int minlines) {
2587        mMinimum = minlines;
2588        mMinMode = LINES;
2589
2590        requestLayout();
2591        invalidate();
2592    }
2593
2594    /**
2595     * Makes the TextView at least this many pixels tall.
2596     *
2597     * Setting this value overrides any other (minimum) number of lines setting.
2598     *
2599     * @attr ref android.R.styleable#TextView_minHeight
2600     */
2601    @android.view.RemotableViewMethod
2602    public void setMinHeight(int minHeight) {
2603        mMinimum = minHeight;
2604        mMinMode = PIXELS;
2605
2606        requestLayout();
2607        invalidate();
2608    }
2609
2610    /**
2611     * Makes the TextView at most this many lines tall.
2612     *
2613     * Setting this value overrides any other (maximum) height setting.
2614     *
2615     * @attr ref android.R.styleable#TextView_maxLines
2616     */
2617    @android.view.RemotableViewMethod
2618    public void setMaxLines(int maxlines) {
2619        mMaximum = maxlines;
2620        mMaxMode = LINES;
2621
2622        requestLayout();
2623        invalidate();
2624    }
2625
2626    /**
2627     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
2628     * {@link #setMaxLines(int)} method.
2629     *
2630     * Setting this value overrides any other (maximum) number of lines setting.
2631     *
2632     * @attr ref android.R.styleable#TextView_maxHeight
2633     */
2634    @android.view.RemotableViewMethod
2635    public void setMaxHeight(int maxHeight) {
2636        mMaximum = maxHeight;
2637        mMaxMode = PIXELS;
2638
2639        requestLayout();
2640        invalidate();
2641    }
2642
2643    /**
2644     * Makes the TextView exactly this many lines tall.
2645     *
2646     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2647     * height setting. A single line TextView will set this value to 1.
2648     *
2649     * @attr ref android.R.styleable#TextView_lines
2650     */
2651    @android.view.RemotableViewMethod
2652    public void setLines(int lines) {
2653        mMaximum = mMinimum = lines;
2654        mMaxMode = mMinMode = LINES;
2655
2656        requestLayout();
2657        invalidate();
2658    }
2659
2660    /**
2661     * Makes the TextView exactly this many pixels tall.
2662     * You could do the same thing by specifying this number in the
2663     * LayoutParams.
2664     *
2665     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2666     * height setting.
2667     *
2668     * @attr ref android.R.styleable#TextView_height
2669     */
2670    @android.view.RemotableViewMethod
2671    public void setHeight(int pixels) {
2672        mMaximum = mMinimum = pixels;
2673        mMaxMode = mMinMode = PIXELS;
2674
2675        requestLayout();
2676        invalidate();
2677    }
2678
2679    /**
2680     * Makes the TextView at least this many ems wide
2681     *
2682     * @attr ref android.R.styleable#TextView_minEms
2683     */
2684    @android.view.RemotableViewMethod
2685    public void setMinEms(int minems) {
2686        mMinWidth = minems;
2687        mMinWidthMode = EMS;
2688
2689        requestLayout();
2690        invalidate();
2691    }
2692
2693    /**
2694     * Makes the TextView at least this many pixels wide
2695     *
2696     * @attr ref android.R.styleable#TextView_minWidth
2697     */
2698    @android.view.RemotableViewMethod
2699    public void setMinWidth(int minpixels) {
2700        mMinWidth = minpixels;
2701        mMinWidthMode = PIXELS;
2702
2703        requestLayout();
2704        invalidate();
2705    }
2706
2707    /**
2708     * Makes the TextView at most this many ems wide
2709     *
2710     * @attr ref android.R.styleable#TextView_maxEms
2711     */
2712    @android.view.RemotableViewMethod
2713    public void setMaxEms(int maxems) {
2714        mMaxWidth = maxems;
2715        mMaxWidthMode = EMS;
2716
2717        requestLayout();
2718        invalidate();
2719    }
2720
2721    /**
2722     * Makes the TextView at most this many pixels wide
2723     *
2724     * @attr ref android.R.styleable#TextView_maxWidth
2725     */
2726    @android.view.RemotableViewMethod
2727    public void setMaxWidth(int maxpixels) {
2728        mMaxWidth = maxpixels;
2729        mMaxWidthMode = PIXELS;
2730
2731        requestLayout();
2732        invalidate();
2733    }
2734
2735    /**
2736     * Makes the TextView exactly this many ems wide
2737     *
2738     * @attr ref android.R.styleable#TextView_ems
2739     */
2740    @android.view.RemotableViewMethod
2741    public void setEms(int ems) {
2742        mMaxWidth = mMinWidth = ems;
2743        mMaxWidthMode = mMinWidthMode = EMS;
2744
2745        requestLayout();
2746        invalidate();
2747    }
2748
2749    /**
2750     * Makes the TextView exactly this many pixels wide.
2751     * You could do the same thing by specifying this number in the
2752     * LayoutParams.
2753     *
2754     * @attr ref android.R.styleable#TextView_width
2755     */
2756    @android.view.RemotableViewMethod
2757    public void setWidth(int pixels) {
2758        mMaxWidth = mMinWidth = pixels;
2759        mMaxWidthMode = mMinWidthMode = PIXELS;
2760
2761        requestLayout();
2762        invalidate();
2763    }
2764
2765
2766    /**
2767     * Sets line spacing for this TextView.  Each line will have its height
2768     * multiplied by <code>mult</code> and have <code>add</code> added to it.
2769     *
2770     * @attr ref android.R.styleable#TextView_lineSpacingExtra
2771     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
2772     */
2773    public void setLineSpacing(float add, float mult) {
2774        if (mSpacingAdd != add || mSpacingMult != mult) {
2775            mSpacingAdd = add;
2776            mSpacingMult = mult;
2777
2778            if (mLayout != null) {
2779                nullLayouts();
2780                requestLayout();
2781                invalidate();
2782            }
2783        }
2784    }
2785
2786    /**
2787     * Convenience method: Append the specified text to the TextView's
2788     * display buffer, upgrading it to BufferType.EDITABLE if it was
2789     * not already editable.
2790     */
2791    public final void append(CharSequence text) {
2792        append(text, 0, text.length());
2793    }
2794
2795    /**
2796     * Convenience method: Append the specified text slice to the TextView's
2797     * display buffer, upgrading it to BufferType.EDITABLE if it was
2798     * not already editable.
2799     */
2800    public void append(CharSequence text, int start, int end) {
2801        if (!(mText instanceof Editable)) {
2802            setText(mText, BufferType.EDITABLE);
2803        }
2804
2805        ((Editable) mText).append(text, start, end);
2806    }
2807
2808    private void updateTextColors() {
2809        boolean inval = false;
2810        int color = mTextColor.getColorForState(getDrawableState(), 0);
2811        if (color != mCurTextColor) {
2812            mCurTextColor = color;
2813            inval = true;
2814        }
2815        if (mLinkTextColor != null) {
2816            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
2817            if (color != mTextPaint.linkColor) {
2818                mTextPaint.linkColor = color;
2819                inval = true;
2820            }
2821        }
2822        if (mHintTextColor != null) {
2823            color = mHintTextColor.getColorForState(getDrawableState(), 0);
2824            if (color != mCurHintTextColor && mText.length() == 0) {
2825                mCurHintTextColor = color;
2826                inval = true;
2827            }
2828        }
2829        if (inval) {
2830            if (mEditor != null) getEditor().mTextDisplayListIsValid = false;
2831            invalidate();
2832        }
2833    }
2834
2835    @Override
2836    protected void drawableStateChanged() {
2837        super.drawableStateChanged();
2838        if (mTextColor != null && mTextColor.isStateful()
2839                || (mHintTextColor != null && mHintTextColor.isStateful())
2840                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
2841            updateTextColors();
2842        }
2843
2844        final Drawables dr = mDrawables;
2845        if (dr != null) {
2846            int[] state = getDrawableState();
2847            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
2848                dr.mDrawableTop.setState(state);
2849            }
2850            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
2851                dr.mDrawableBottom.setState(state);
2852            }
2853            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
2854                dr.mDrawableLeft.setState(state);
2855            }
2856            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
2857                dr.mDrawableRight.setState(state);
2858            }
2859            if (dr.mDrawableStart != null && dr.mDrawableStart.isStateful()) {
2860                dr.mDrawableStart.setState(state);
2861            }
2862            if (dr.mDrawableEnd != null && dr.mDrawableEnd.isStateful()) {
2863                dr.mDrawableEnd.setState(state);
2864            }
2865        }
2866    }
2867
2868    @Override
2869    public Parcelable onSaveInstanceState() {
2870        Parcelable superState = super.onSaveInstanceState();
2871
2872        // Save state if we are forced to
2873        boolean save = mFreezesText;
2874        int start = 0;
2875        int end = 0;
2876
2877        if (mText != null) {
2878            start = getSelectionStart();
2879            end = getSelectionEnd();
2880            if (start >= 0 || end >= 0) {
2881                // Or save state if there is a selection
2882                save = true;
2883            }
2884        }
2885
2886        if (save) {
2887            SavedState ss = new SavedState(superState);
2888            // XXX Should also save the current scroll position!
2889            ss.selStart = start;
2890            ss.selEnd = end;
2891
2892            if (mText instanceof Spanned) {
2893                /*
2894                 * Calling setText() strips off any ChangeWatchers;
2895                 * strip them now to avoid leaking references.
2896                 * But do it to a copy so that if there are any
2897                 * further changes to the text of this view, it
2898                 * won't get into an inconsistent state.
2899                 */
2900
2901                Spannable sp = new SpannableString(mText);
2902
2903                for (ChangeWatcher cw : sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
2904                    sp.removeSpan(cw);
2905                }
2906
2907                if (mEditor != null) {
2908                    removeMisspelledSpans(sp);
2909                    sp.removeSpan(getEditor().mSuggestionRangeSpan);
2910                }
2911
2912                ss.text = sp;
2913            } else {
2914                ss.text = mText.toString();
2915            }
2916
2917            if (isFocused() && start >= 0 && end >= 0) {
2918                ss.frozenWithFocus = true;
2919            }
2920
2921            ss.error = getError();
2922
2923            return ss;
2924        }
2925
2926        return superState;
2927    }
2928
2929    void removeMisspelledSpans(Spannable spannable) {
2930        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
2931                SuggestionSpan.class);
2932        for (int i = 0; i < suggestionSpans.length; i++) {
2933            int flags = suggestionSpans[i].getFlags();
2934            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
2935                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
2936                spannable.removeSpan(suggestionSpans[i]);
2937            }
2938        }
2939    }
2940
2941    @Override
2942    public void onRestoreInstanceState(Parcelable state) {
2943        if (!(state instanceof SavedState)) {
2944            super.onRestoreInstanceState(state);
2945            return;
2946        }
2947
2948        SavedState ss = (SavedState)state;
2949        super.onRestoreInstanceState(ss.getSuperState());
2950
2951        // XXX restore buffer type too, as well as lots of other stuff
2952        if (ss.text != null) {
2953            setText(ss.text);
2954        }
2955
2956        if (ss.selStart >= 0 && ss.selEnd >= 0) {
2957            if (mText instanceof Spannable) {
2958                int len = mText.length();
2959
2960                if (ss.selStart > len || ss.selEnd > len) {
2961                    String restored = "";
2962
2963                    if (ss.text != null) {
2964                        restored = "(restored) ";
2965                    }
2966
2967                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
2968                          "/" + ss.selEnd + " out of range for " + restored +
2969                          "text " + mText);
2970                } else {
2971                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
2972
2973                    if (ss.frozenWithFocus) {
2974                        createEditorIfNeeded("restore instance with focus");
2975                        getEditor().mFrozenWithFocus = true;
2976                    }
2977                }
2978            }
2979        }
2980
2981        if (ss.error != null) {
2982            final CharSequence error = ss.error;
2983            // Display the error later, after the first layout pass
2984            post(new Runnable() {
2985                public void run() {
2986                    setError(error);
2987                }
2988            });
2989        }
2990    }
2991
2992    /**
2993     * Control whether this text view saves its entire text contents when
2994     * freezing to an icicle, in addition to dynamic state such as cursor
2995     * position.  By default this is false, not saving the text.  Set to true
2996     * if the text in the text view is not being saved somewhere else in
2997     * persistent storage (such as in a content provider) so that if the
2998     * view is later thawed the user will not lose their data.
2999     *
3000     * @param freezesText Controls whether a frozen icicle should include the
3001     * entire text data: true to include it, false to not.
3002     *
3003     * @attr ref android.R.styleable#TextView_freezesText
3004     */
3005    @android.view.RemotableViewMethod
3006    public void setFreezesText(boolean freezesText) {
3007        mFreezesText = freezesText;
3008    }
3009
3010    /**
3011     * Return whether this text view is including its entire text contents
3012     * in frozen icicles.
3013     *
3014     * @return Returns true if text is included, false if it isn't.
3015     *
3016     * @see #setFreezesText
3017     */
3018    public boolean getFreezesText() {
3019        return mFreezesText;
3020    }
3021
3022    ///////////////////////////////////////////////////////////////////////////
3023
3024    /**
3025     * Sets the Factory used to create new Editables.
3026     */
3027    public final void setEditableFactory(Editable.Factory factory) {
3028        mEditableFactory = factory;
3029        setText(mText);
3030    }
3031
3032    /**
3033     * Sets the Factory used to create new Spannables.
3034     */
3035    public final void setSpannableFactory(Spannable.Factory factory) {
3036        mSpannableFactory = factory;
3037        setText(mText);
3038    }
3039
3040    /**
3041     * Sets the string value of the TextView. TextView <em>does not</em> accept
3042     * HTML-like formatting, which you can do with text strings in XML resource files.
3043     * To style your strings, attach android.text.style.* objects to a
3044     * {@link android.text.SpannableString SpannableString}, or see the
3045     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
3046     * Available Resource Types</a> documentation for an example of setting
3047     * formatted text in the XML resource file.
3048     *
3049     * @attr ref android.R.styleable#TextView_text
3050     */
3051    @android.view.RemotableViewMethod
3052    public final void setText(CharSequence text) {
3053        setText(text, mBufferType);
3054    }
3055
3056    /**
3057     * Like {@link #setText(CharSequence)},
3058     * except that the cursor position (if any) is retained in the new text.
3059     *
3060     * @param text The new text to place in the text view.
3061     *
3062     * @see #setText(CharSequence)
3063     */
3064    @android.view.RemotableViewMethod
3065    public final void setTextKeepState(CharSequence text) {
3066        setTextKeepState(text, mBufferType);
3067    }
3068
3069    /**
3070     * Sets the text that this TextView is to display (see
3071     * {@link #setText(CharSequence)}) and also sets whether it is stored
3072     * in a styleable/spannable buffer and whether it is editable.
3073     *
3074     * @attr ref android.R.styleable#TextView_text
3075     * @attr ref android.R.styleable#TextView_bufferType
3076     */
3077    public void setText(CharSequence text, BufferType type) {
3078        setText(text, type, true, 0);
3079
3080        if (mCharWrapper != null) {
3081            mCharWrapper.mChars = null;
3082        }
3083    }
3084
3085    private void setText(CharSequence text, BufferType type,
3086                         boolean notifyBefore, int oldlen) {
3087        if (text == null) {
3088            text = "";
3089        }
3090
3091        // If suggestions are not enabled, remove the suggestion spans from the text
3092        if (!isSuggestionsEnabled()) {
3093            text = removeSuggestionSpans(text);
3094        }
3095
3096        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
3097
3098        if (text instanceof Spanned &&
3099            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
3100            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
3101                setHorizontalFadingEdgeEnabled(true);
3102                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
3103            } else {
3104                setHorizontalFadingEdgeEnabled(false);
3105                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
3106            }
3107            setEllipsize(TextUtils.TruncateAt.MARQUEE);
3108        }
3109
3110        int n = mFilters.length;
3111        for (int i = 0; i < n; i++) {
3112            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
3113            if (out != null) {
3114                text = out;
3115            }
3116        }
3117
3118        if (notifyBefore) {
3119            if (mText != null) {
3120                oldlen = mText.length();
3121                sendBeforeTextChanged(mText, 0, oldlen, text.length());
3122            } else {
3123                sendBeforeTextChanged("", 0, 0, text.length());
3124            }
3125        }
3126
3127        boolean needEditableForNotification = false;
3128
3129        if (mListeners != null && mListeners.size() != 0) {
3130            needEditableForNotification = true;
3131        }
3132
3133        if (type == BufferType.EDITABLE || getKeyListener() != null || needEditableForNotification) {
3134            createEditorIfNeeded("setText with BufferType.EDITABLE or non null mInput");
3135            Editable t = mEditableFactory.newEditable(text);
3136            text = t;
3137            setFilters(t, mFilters);
3138            InputMethodManager imm = InputMethodManager.peekInstance();
3139            if (imm != null) imm.restartInput(this);
3140        } else if (type == BufferType.SPANNABLE || mMovement != null) {
3141            text = mSpannableFactory.newSpannable(text);
3142        } else if (!(text instanceof CharWrapper)) {
3143            text = TextUtils.stringOrSpannedString(text);
3144        }
3145
3146        if (mAutoLinkMask != 0) {
3147            Spannable s2;
3148
3149            if (type == BufferType.EDITABLE || text instanceof Spannable) {
3150                s2 = (Spannable) text;
3151            } else {
3152                s2 = mSpannableFactory.newSpannable(text);
3153            }
3154
3155            if (Linkify.addLinks(s2, mAutoLinkMask)) {
3156                text = s2;
3157                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
3158
3159                /*
3160                 * We must go ahead and set the text before changing the
3161                 * movement method, because setMovementMethod() may call
3162                 * setText() again to try to upgrade the buffer type.
3163                 */
3164                mText = text;
3165
3166                // Do not change the movement method for text that support text selection as it
3167                // would prevent an arbitrary cursor displacement.
3168                if (mLinksClickable && !textCanBeSelected()) {
3169                    setMovementMethod(LinkMovementMethod.getInstance());
3170                }
3171            }
3172        }
3173
3174        mBufferType = type;
3175        mText = text;
3176
3177        if (mTransformation == null) {
3178            mTransformed = text;
3179        } else {
3180            mTransformed = mTransformation.getTransformation(text, this);
3181        }
3182
3183        final int textLength = text.length();
3184
3185        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
3186            Spannable sp = (Spannable) text;
3187
3188            // Remove any ChangeWatchers that might have come
3189            // from other TextViews.
3190            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
3191            final int count = watchers.length;
3192            for (int i = 0; i < count; i++)
3193                sp.removeSpan(watchers[i]);
3194
3195            if (mChangeWatcher == null)
3196                mChangeWatcher = new ChangeWatcher();
3197
3198            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
3199                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
3200
3201            if (mEditor != null && getEditor().mKeyListener != null) {
3202                sp.setSpan(getEditor().mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
3203            }
3204
3205            if (mTransformation != null) {
3206                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
3207            }
3208
3209            if (mMovement != null) {
3210                mMovement.initialize(this, (Spannable) text);
3211
3212                /*
3213                 * Initializing the movement method will have set the
3214                 * selection, so reset mSelectionMoved to keep that from
3215                 * interfering with the normal on-focus selection-setting.
3216                 */
3217                if (mEditor != null) getEditor().mSelectionMoved = false;
3218            }
3219        }
3220
3221        if (mLayout != null) {
3222            checkForRelayout();
3223        }
3224
3225        sendOnTextChanged(text, 0, oldlen, textLength);
3226        onTextChanged(text, 0, oldlen, textLength);
3227
3228        if (needEditableForNotification) {
3229            sendAfterTextChanged((Editable) text);
3230        }
3231
3232        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
3233        prepareCursorControllers();
3234    }
3235
3236    /**
3237     * Sets the TextView to display the specified slice of the specified
3238     * char array.  You must promise that you will not change the contents
3239     * of the array except for right before another call to setText(),
3240     * since the TextView has no way to know that the text
3241     * has changed and that it needs to invalidate and re-layout.
3242     */
3243    public final void setText(char[] text, int start, int len) {
3244        int oldlen = 0;
3245
3246        if (start < 0 || len < 0 || start + len > text.length) {
3247            throw new IndexOutOfBoundsException(start + ", " + len);
3248        }
3249
3250        /*
3251         * We must do the before-notification here ourselves because if
3252         * the old text is a CharWrapper we destroy it before calling
3253         * into the normal path.
3254         */
3255        if (mText != null) {
3256            oldlen = mText.length();
3257            sendBeforeTextChanged(mText, 0, oldlen, len);
3258        } else {
3259            sendBeforeTextChanged("", 0, 0, len);
3260        }
3261
3262        if (mCharWrapper == null) {
3263            mCharWrapper = new CharWrapper(text, start, len);
3264        } else {
3265            mCharWrapper.set(text, start, len);
3266        }
3267
3268        setText(mCharWrapper, mBufferType, false, oldlen);
3269    }
3270
3271    /**
3272     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
3273     * except that the cursor position (if any) is retained in the new text.
3274     *
3275     * @see #setText(CharSequence, android.widget.TextView.BufferType)
3276     */
3277    public final void setTextKeepState(CharSequence text, BufferType type) {
3278        int start = getSelectionStart();
3279        int end = getSelectionEnd();
3280        int len = text.length();
3281
3282        setText(text, type);
3283
3284        if (start >= 0 || end >= 0) {
3285            if (mText instanceof Spannable) {
3286                Selection.setSelection((Spannable) mText,
3287                                       Math.max(0, Math.min(start, len)),
3288                                       Math.max(0, Math.min(end, len)));
3289            }
3290        }
3291    }
3292
3293    @android.view.RemotableViewMethod
3294    public final void setText(int resid) {
3295        setText(getContext().getResources().getText(resid));
3296    }
3297
3298    public final void setText(int resid, BufferType type) {
3299        setText(getContext().getResources().getText(resid), type);
3300    }
3301
3302    /**
3303     * Sets the text to be displayed when the text of the TextView is empty.
3304     * Null means to use the normal empty text. The hint does not currently
3305     * participate in determining the size of the view.
3306     *
3307     * @attr ref android.R.styleable#TextView_hint
3308     */
3309    @android.view.RemotableViewMethod
3310    public final void setHint(CharSequence hint) {
3311        mHint = TextUtils.stringOrSpannedString(hint);
3312
3313        if (mLayout != null) {
3314            checkForRelayout();
3315        }
3316
3317        if (mText.length() == 0) {
3318            invalidate();
3319        }
3320
3321        // Invalidate display list if hint will be used
3322        if (mEditor != null && mText.length() == 0 && mHint != null) {
3323            getEditor().mTextDisplayListIsValid = false;
3324        }
3325    }
3326
3327    /**
3328     * Sets the text to be displayed when the text of the TextView is empty,
3329     * from a resource.
3330     *
3331     * @attr ref android.R.styleable#TextView_hint
3332     */
3333    @android.view.RemotableViewMethod
3334    public final void setHint(int resid) {
3335        setHint(getContext().getResources().getText(resid));
3336    }
3337
3338    /**
3339     * Returns the hint that is displayed when the text of the TextView
3340     * is empty.
3341     *
3342     * @attr ref android.R.styleable#TextView_hint
3343     */
3344    @ViewDebug.CapturedViewProperty
3345    public CharSequence getHint() {
3346        return mHint;
3347    }
3348
3349    private static boolean isMultilineInputType(int type) {
3350        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
3351            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
3352    }
3353
3354    /**
3355     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
3356     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
3357     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
3358     * then a soft keyboard will not be displayed for this text view.
3359     *
3360     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
3361     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
3362     * type.
3363     *
3364     * @see #getInputType()
3365     * @see #setRawInputType(int)
3366     * @see android.text.InputType
3367     * @attr ref android.R.styleable#TextView_inputType
3368     */
3369    public void setInputType(int type) {
3370        final boolean wasPassword = isPasswordInputType(getInputType());
3371        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
3372        setInputType(type, false);
3373        final boolean isPassword = isPasswordInputType(type);
3374        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
3375        boolean forceUpdate = false;
3376        if (isPassword) {
3377            setTransformationMethod(PasswordTransformationMethod.getInstance());
3378            setTypefaceByIndex(MONOSPACE, 0);
3379        } else if (isVisiblePassword) {
3380            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3381                forceUpdate = true;
3382            }
3383            setTypefaceByIndex(MONOSPACE, 0);
3384        } else if (wasPassword || wasVisiblePassword) {
3385            // not in password mode, clean up typeface and transformation
3386            setTypefaceByIndex(-1, -1);
3387            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3388                forceUpdate = true;
3389            }
3390        }
3391
3392        boolean singleLine = !isMultilineInputType(type);
3393
3394        // We need to update the single line mode if it has changed or we
3395        // were previously in password mode.
3396        if (mSingleLine != singleLine || forceUpdate) {
3397            // Change single line mode, but only change the transformation if
3398            // we are not in password mode.
3399            applySingleLine(singleLine, !isPassword, true);
3400        }
3401
3402        if (!isSuggestionsEnabled()) {
3403            mText = removeSuggestionSpans(mText);
3404        }
3405
3406        InputMethodManager imm = InputMethodManager.peekInstance();
3407        if (imm != null) imm.restartInput(this);
3408    }
3409
3410    /**
3411     * It would be better to rely on the input type for everything. A password inputType should have
3412     * a password transformation. We should hence use isPasswordInputType instead of this method.
3413     *
3414     * We should:
3415     * - Call setInputType in setKeyListener instead of changing the input type directly (which
3416     * would install the correct transformation).
3417     * - Refuse the installation of a non-password transformation in setTransformation if the input
3418     * type is password.
3419     *
3420     * However, this is like this for legacy reasons and we cannot break existing apps. This method
3421     * is useful since it matches what the user can see (obfuscated text or not).
3422     *
3423     * @return true if the current transformation method is of the password type.
3424     */
3425    private boolean hasPasswordTransformationMethod() {
3426        return mTransformation instanceof PasswordTransformationMethod;
3427    }
3428
3429    private static boolean isPasswordInputType(int inputType) {
3430        final int variation =
3431                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3432        return variation
3433                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
3434                || variation
3435                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
3436                || variation
3437                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
3438    }
3439
3440    private static boolean isVisiblePasswordInputType(int inputType) {
3441        final int variation =
3442                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3443        return variation
3444                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
3445    }
3446
3447    /**
3448     * Directly change the content type integer of the text view, without
3449     * modifying any other state.
3450     * @see #setInputType(int)
3451     * @see android.text.InputType
3452     * @attr ref android.R.styleable#TextView_inputType
3453     */
3454    public void setRawInputType(int type) {
3455        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
3456        createEditorIfNeeded("non null input type");
3457        getEditor().mInputType = type;
3458    }
3459
3460    private void setInputType(int type, boolean direct) {
3461        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
3462        KeyListener input;
3463        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
3464            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
3465            TextKeyListener.Capitalize cap;
3466            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
3467                cap = TextKeyListener.Capitalize.CHARACTERS;
3468            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
3469                cap = TextKeyListener.Capitalize.WORDS;
3470            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
3471                cap = TextKeyListener.Capitalize.SENTENCES;
3472            } else {
3473                cap = TextKeyListener.Capitalize.NONE;
3474            }
3475            input = TextKeyListener.getInstance(autotext, cap);
3476        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
3477            input = DigitsKeyListener.getInstance(
3478                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
3479                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
3480        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
3481            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
3482                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
3483                    input = DateKeyListener.getInstance();
3484                    break;
3485                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
3486                    input = TimeKeyListener.getInstance();
3487                    break;
3488                default:
3489                    input = DateTimeKeyListener.getInstance();
3490                    break;
3491            }
3492        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
3493            input = DialerKeyListener.getInstance();
3494        } else {
3495            input = TextKeyListener.getInstance();
3496        }
3497        setRawInputType(type);
3498        if (direct) {
3499            createEditorIfNeeded("setInputType");
3500            getEditor().mKeyListener = input;
3501        } else {
3502            setKeyListenerOnly(input);
3503        }
3504    }
3505
3506    /**
3507     * Get the type of the editable content.
3508     *
3509     * @see #setInputType(int)
3510     * @see android.text.InputType
3511     */
3512    public int getInputType() {
3513        return mEditor == null ? EditorInfo.TYPE_NULL : getEditor().mInputType;
3514    }
3515
3516    /**
3517     * Change the editor type integer associated with the text view, which
3518     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
3519     * has focus.
3520     * @see #getImeOptions
3521     * @see android.view.inputmethod.EditorInfo
3522     * @attr ref android.R.styleable#TextView_imeOptions
3523     */
3524    public void setImeOptions(int imeOptions) {
3525        createEditorIfNeeded("IME options specified");
3526        if (getEditor().mInputContentType == null) {
3527            getEditor().mInputContentType = new InputContentType();
3528        }
3529        getEditor().mInputContentType.imeOptions = imeOptions;
3530    }
3531
3532    /**
3533     * Get the type of the IME editor.
3534     *
3535     * @see #setImeOptions(int)
3536     * @see android.view.inputmethod.EditorInfo
3537     */
3538    public int getImeOptions() {
3539        return mEditor != null && getEditor().mInputContentType != null
3540                ? getEditor().mInputContentType.imeOptions : EditorInfo.IME_NULL;
3541    }
3542
3543    /**
3544     * Change the custom IME action associated with the text view, which
3545     * will be reported to an IME with {@link EditorInfo#actionLabel}
3546     * and {@link EditorInfo#actionId} when it has focus.
3547     * @see #getImeActionLabel
3548     * @see #getImeActionId
3549     * @see android.view.inputmethod.EditorInfo
3550     * @attr ref android.R.styleable#TextView_imeActionLabel
3551     * @attr ref android.R.styleable#TextView_imeActionId
3552     */
3553    public void setImeActionLabel(CharSequence label, int actionId) {
3554        createEditorIfNeeded("IME action label specified");
3555        if (getEditor().mInputContentType == null) {
3556            getEditor().mInputContentType = new InputContentType();
3557        }
3558        getEditor().mInputContentType.imeActionLabel = label;
3559        getEditor().mInputContentType.imeActionId = actionId;
3560    }
3561
3562    /**
3563     * Get the IME action label previous set with {@link #setImeActionLabel}.
3564     *
3565     * @see #setImeActionLabel
3566     * @see android.view.inputmethod.EditorInfo
3567     */
3568    public CharSequence getImeActionLabel() {
3569        return mEditor != null && getEditor().mInputContentType != null
3570                ? getEditor().mInputContentType.imeActionLabel : null;
3571    }
3572
3573    /**
3574     * Get the IME action ID previous set with {@link #setImeActionLabel}.
3575     *
3576     * @see #setImeActionLabel
3577     * @see android.view.inputmethod.EditorInfo
3578     */
3579    public int getImeActionId() {
3580        return mEditor != null && getEditor().mInputContentType != null
3581                ? getEditor().mInputContentType.imeActionId : 0;
3582    }
3583
3584    /**
3585     * Set a special listener to be called when an action is performed
3586     * on the text view.  This will be called when the enter key is pressed,
3587     * or when an action supplied to the IME is selected by the user.  Setting
3588     * this means that the normal hard key event will not insert a newline
3589     * into the text view, even if it is multi-line; holding down the ALT
3590     * modifier will, however, allow the user to insert a newline character.
3591     */
3592    public void setOnEditorActionListener(OnEditorActionListener l) {
3593        createEditorIfNeeded("Editor action listener set");
3594        if (getEditor().mInputContentType == null) {
3595            getEditor().mInputContentType = new InputContentType();
3596        }
3597        getEditor().mInputContentType.onEditorActionListener = l;
3598    }
3599
3600    /**
3601     * Called when an attached input method calls
3602     * {@link InputConnection#performEditorAction(int)
3603     * InputConnection.performEditorAction()}
3604     * for this text view.  The default implementation will call your action
3605     * listener supplied to {@link #setOnEditorActionListener}, or perform
3606     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
3607     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
3608     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
3609     * EditorInfo.IME_ACTION_DONE}.
3610     *
3611     * <p>For backwards compatibility, if no IME options have been set and the
3612     * text view would not normally advance focus on enter, then
3613     * the NEXT and DONE actions received here will be turned into an enter
3614     * key down/up pair to go through the normal key handling.
3615     *
3616     * @param actionCode The code of the action being performed.
3617     *
3618     * @see #setOnEditorActionListener
3619     */
3620    public void onEditorAction(int actionCode) {
3621        final InputContentType ict = mEditor == null ? null : getEditor().mInputContentType;
3622        if (ict != null) {
3623            if (ict.onEditorActionListener != null) {
3624                if (ict.onEditorActionListener.onEditorAction(this,
3625                        actionCode, null)) {
3626                    return;
3627                }
3628            }
3629
3630            // This is the handling for some default action.
3631            // Note that for backwards compatibility we don't do this
3632            // default handling if explicit ime options have not been given,
3633            // instead turning this into the normal enter key codes that an
3634            // app may be expecting.
3635            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
3636                View v = focusSearch(FOCUS_FORWARD);
3637                if (v != null) {
3638                    if (!v.requestFocus(FOCUS_FORWARD)) {
3639                        throw new IllegalStateException("focus search returned a view " +
3640                                "that wasn't able to take focus!");
3641                    }
3642                }
3643                return;
3644
3645            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
3646                View v = focusSearch(FOCUS_BACKWARD);
3647                if (v != null) {
3648                    if (!v.requestFocus(FOCUS_BACKWARD)) {
3649                        throw new IllegalStateException("focus search returned a view " +
3650                                "that wasn't able to take focus!");
3651                    }
3652                }
3653                return;
3654
3655            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
3656                InputMethodManager imm = InputMethodManager.peekInstance();
3657                if (imm != null && imm.isActive(this)) {
3658                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
3659                }
3660                return;
3661            }
3662        }
3663
3664        ViewRootImpl viewRootImpl = getViewRootImpl();
3665        if (viewRootImpl != null) {
3666            long eventTime = SystemClock.uptimeMillis();
3667            viewRootImpl.dispatchKeyFromIme(
3668                    new KeyEvent(eventTime, eventTime,
3669                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
3670                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
3671                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3672                    | KeyEvent.FLAG_EDITOR_ACTION));
3673            viewRootImpl.dispatchKeyFromIme(
3674                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
3675                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
3676                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
3677                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3678                    | KeyEvent.FLAG_EDITOR_ACTION));
3679        }
3680    }
3681
3682    /**
3683     * Set the private content type of the text, which is the
3684     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
3685     * field that will be filled in when creating an input connection.
3686     *
3687     * @see #getPrivateImeOptions()
3688     * @see EditorInfo#privateImeOptions
3689     * @attr ref android.R.styleable#TextView_privateImeOptions
3690     */
3691    public void setPrivateImeOptions(String type) {
3692        createEditorIfNeeded("Private IME option set");
3693        if (getEditor().mInputContentType == null)
3694            getEditor().mInputContentType = new InputContentType();
3695        getEditor().mInputContentType.privateImeOptions = type;
3696    }
3697
3698    /**
3699     * Get the private type of the content.
3700     *
3701     * @see #setPrivateImeOptions(String)
3702     * @see EditorInfo#privateImeOptions
3703     */
3704    public String getPrivateImeOptions() {
3705        return mEditor != null && getEditor().mInputContentType != null
3706                ? getEditor().mInputContentType.privateImeOptions : null;
3707    }
3708
3709    /**
3710     * Set the extra input data of the text, which is the
3711     * {@link EditorInfo#extras TextBoxAttribute.extras}
3712     * Bundle that will be filled in when creating an input connection.  The
3713     * given integer is the resource ID of an XML resource holding an
3714     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
3715     *
3716     * @see #getInputExtras(boolean)
3717     * @see EditorInfo#extras
3718     * @attr ref android.R.styleable#TextView_editorExtras
3719     */
3720    public void setInputExtras(int xmlResId) throws XmlPullParserException, IOException {
3721        createEditorIfNeeded("Input extra set");
3722        XmlResourceParser parser = getResources().getXml(xmlResId);
3723        if (getEditor().mInputContentType == null)
3724            getEditor().mInputContentType = new InputContentType();
3725        getEditor().mInputContentType.extras = new Bundle();
3726        getResources().parseBundleExtras(parser, getEditor().mInputContentType.extras);
3727    }
3728
3729    /**
3730     * Retrieve the input extras currently associated with the text view, which
3731     * can be viewed as well as modified.
3732     *
3733     * @param create If true, the extras will be created if they don't already
3734     * exist.  Otherwise, null will be returned if none have been created.
3735     * @see #setInputExtras(int)
3736     * @see EditorInfo#extras
3737     * @attr ref android.R.styleable#TextView_editorExtras
3738     */
3739    public Bundle getInputExtras(boolean create) {
3740        if (mEditor == null && !create) return null;
3741        createEditorIfNeeded("get Input extra");
3742        if (getEditor().mInputContentType == null) {
3743            if (!create) return null;
3744            getEditor().mInputContentType = new InputContentType();
3745        }
3746        if (getEditor().mInputContentType.extras == null) {
3747            if (!create) return null;
3748            getEditor().mInputContentType.extras = new Bundle();
3749        }
3750        return getEditor().mInputContentType.extras;
3751    }
3752
3753    /**
3754     * Returns the error message that was set to be displayed with
3755     * {@link #setError}, or <code>null</code> if no error was set
3756     * or if it the error was cleared by the widget after user input.
3757     */
3758    public CharSequence getError() {
3759        return mEditor == null ? null : getEditor().mError;
3760    }
3761
3762    /**
3763     * Sets the right-hand compound drawable of the TextView to the "error"
3764     * icon and sets an error message that will be displayed in a popup when
3765     * the TextView has focus.  The icon and error message will be reset to
3766     * null when any key events cause changes to the TextView's text.  If the
3767     * <code>error</code> is <code>null</code>, the error message and icon
3768     * will be cleared.
3769     */
3770    @android.view.RemotableViewMethod
3771    public void setError(CharSequence error) {
3772        if (error == null) {
3773            setError(null, null);
3774        } else {
3775            Drawable dr = getContext().getResources().
3776                getDrawable(com.android.internal.R.drawable.indicator_input_error);
3777
3778            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
3779            setError(error, dr);
3780        }
3781    }
3782
3783    /**
3784     * Sets the right-hand compound drawable of the TextView to the specified
3785     * icon and sets an error message that will be displayed in a popup when
3786     * the TextView has focus.  The icon and error message will be reset to
3787     * null when any key events cause changes to the TextView's text.  The
3788     * drawable must already have had {@link Drawable#setBounds} set on it.
3789     * If the <code>error</code> is <code>null</code>, the error message will
3790     * be cleared (and you should provide a <code>null</code> icon as well).
3791     */
3792    public void setError(CharSequence error, Drawable icon) {
3793        createEditorIfNeeded("setError");
3794        error = TextUtils.stringOrSpannedString(error);
3795
3796        getEditor().mError = error;
3797        getEditor().mErrorWasChanged = true;
3798        final Drawables dr = mDrawables;
3799        if (dr != null) {
3800            switch (getResolvedLayoutDirection()) {
3801                default:
3802                case LAYOUT_DIRECTION_LTR:
3803                    setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop, icon,
3804                            dr.mDrawableBottom);
3805                    break;
3806                case LAYOUT_DIRECTION_RTL:
3807                    setCompoundDrawables(icon, dr.mDrawableTop, dr.mDrawableRight,
3808                            dr.mDrawableBottom);
3809                    break;
3810            }
3811        } else {
3812            setCompoundDrawables(null, null, icon, null);
3813        }
3814
3815        if (error == null) {
3816            if (getEditor().mErrorPopup != null) {
3817                if (getEditor().mErrorPopup.isShowing()) {
3818                    getEditor().mErrorPopup.dismiss();
3819                }
3820
3821                getEditor().mErrorPopup = null;
3822            }
3823        } else {
3824            if (isFocused()) {
3825                showError();
3826            }
3827        }
3828    }
3829
3830    private void showError() {
3831        if (getWindowToken() == null) {
3832            getEditor().mShowErrorAfterAttach = true;
3833            return;
3834        }
3835
3836        if (getEditor().mErrorPopup == null) {
3837            LayoutInflater inflater = LayoutInflater.from(getContext());
3838            final TextView err = (TextView) inflater.inflate(
3839                    com.android.internal.R.layout.textview_hint, null);
3840
3841            final float scale = getResources().getDisplayMetrics().density;
3842            getEditor().mErrorPopup = new ErrorPopup(err, (int) (200 * scale + 0.5f), (int) (50 * scale + 0.5f));
3843            getEditor().mErrorPopup.setFocusable(false);
3844            // The user is entering text, so the input method is needed.  We
3845            // don't want the popup to be displayed on top of it.
3846            getEditor().mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED);
3847        }
3848
3849        TextView tv = (TextView) getEditor().mErrorPopup.getContentView();
3850        chooseSize(getEditor().mErrorPopup, getEditor().mError, tv);
3851        tv.setText(getEditor().mError);
3852
3853        getEditor().mErrorPopup.showAsDropDown(this, getErrorX(), getErrorY());
3854        getEditor().mErrorPopup.fixDirection(getEditor().mErrorPopup.isAboveAnchor());
3855    }
3856
3857    /**
3858     * Returns the Y offset to make the pointy top of the error point
3859     * at the middle of the error icon.
3860     */
3861    private int getErrorX() {
3862        /*
3863         * The "25" is the distance between the point and the right edge
3864         * of the background
3865         */
3866        final float scale = getResources().getDisplayMetrics().density;
3867
3868        final Drawables dr = mDrawables;
3869        return getWidth() - getEditor().mErrorPopup.getWidth() - getPaddingRight() -
3870                (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f);
3871    }
3872
3873    /**
3874     * Returns the Y offset to make the pointy top of the error point
3875     * at the bottom of the error icon.
3876     */
3877    private int getErrorY() {
3878        /*
3879         * Compound, not extended, because the icon is not clipped
3880         * if the text height is smaller.
3881         */
3882        final int compoundPaddingTop = getCompoundPaddingTop();
3883        int vspace = mBottom - mTop - getCompoundPaddingBottom() - compoundPaddingTop;
3884
3885        final Drawables dr = mDrawables;
3886        int icontop = compoundPaddingTop +
3887                (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2;
3888
3889        /*
3890         * The "2" is the distance between the point and the top edge
3891         * of the background.
3892         */
3893        final float scale = getResources().getDisplayMetrics().density;
3894        return icontop + (dr != null ? dr.mDrawableHeightRight : 0) - getHeight() -
3895                (int) (2 * scale + 0.5f);
3896    }
3897
3898    private void hideError() {
3899        if (getEditor().mErrorPopup != null) {
3900            if (getEditor().mErrorPopup.isShowing()) {
3901                getEditor().mErrorPopup.dismiss();
3902            }
3903        }
3904
3905        getEditor().mShowErrorAfterAttach = false;
3906    }
3907
3908    private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) {
3909        int wid = tv.getPaddingLeft() + tv.getPaddingRight();
3910        int ht = tv.getPaddingTop() + tv.getPaddingBottom();
3911
3912        int defaultWidthInPixels = getResources().getDimensionPixelSize(
3913                com.android.internal.R.dimen.textview_error_popup_default_width);
3914        Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels,
3915                                    Layout.Alignment.ALIGN_NORMAL, 1, 0, true);
3916        float max = 0;
3917        for (int i = 0; i < l.getLineCount(); i++) {
3918            max = Math.max(max, l.getLineWidth(i));
3919        }
3920
3921        /*
3922         * Now set the popup size to be big enough for the text plus the border capped
3923         * to DEFAULT_MAX_POPUP_WIDTH
3924         */
3925        pop.setWidth(wid + (int) Math.ceil(max));
3926        pop.setHeight(ht + l.getHeight());
3927    }
3928
3929
3930    @Override
3931    protected boolean setFrame(int l, int t, int r, int b) {
3932        boolean result = super.setFrame(l, t, r, b);
3933
3934        if (mEditor != null) getEditor().setFrame();
3935
3936        restartMarqueeIfNeeded();
3937
3938        return result;
3939    }
3940
3941    private void restartMarqueeIfNeeded() {
3942        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3943            mRestartMarquee = false;
3944            startMarquee();
3945        }
3946    }
3947
3948    /**
3949     * Sets the list of input filters that will be used if the buffer is
3950     * Editable. Has no effect otherwise.
3951     *
3952     * @attr ref android.R.styleable#TextView_maxLength
3953     */
3954    public void setFilters(InputFilter[] filters) {
3955        if (filters == null) {
3956            throw new IllegalArgumentException();
3957        }
3958
3959        mFilters = filters;
3960
3961        if (mText instanceof Editable) {
3962            setFilters((Editable) mText, filters);
3963        }
3964    }
3965
3966    /**
3967     * Sets the list of input filters on the specified Editable,
3968     * and includes mInput in the list if it is an InputFilter.
3969     */
3970    private void setFilters(Editable e, InputFilter[] filters) {
3971        if (mEditor != null && getEditor().mKeyListener instanceof InputFilter) {
3972            InputFilter[] nf = new InputFilter[filters.length + 1];
3973
3974            System.arraycopy(filters, 0, nf, 0, filters.length);
3975            nf[filters.length] = (InputFilter) getEditor().mKeyListener;
3976
3977            e.setFilters(nf);
3978        } else {
3979            e.setFilters(filters);
3980        }
3981    }
3982
3983    /**
3984     * Returns the current list of input filters.
3985     */
3986    public InputFilter[] getFilters() {
3987        return mFilters;
3988    }
3989
3990    /////////////////////////////////////////////////////////////////////////
3991
3992    private int getVerticalOffset(boolean forceNormal) {
3993        int voffset = 0;
3994        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3995
3996        Layout l = mLayout;
3997        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3998            l = mHintLayout;
3999        }
4000
4001        if (gravity != Gravity.TOP) {
4002            int boxht;
4003
4004            if (l == mHintLayout) {
4005                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
4006                        getCompoundPaddingBottom();
4007            } else {
4008                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
4009                        getExtendedPaddingBottom();
4010            }
4011            int textht = l.getHeight();
4012
4013            if (textht < boxht) {
4014                if (gravity == Gravity.BOTTOM)
4015                    voffset = boxht - textht;
4016                else // (gravity == Gravity.CENTER_VERTICAL)
4017                    voffset = (boxht - textht) >> 1;
4018            }
4019        }
4020        return voffset;
4021    }
4022
4023    private int getBottomVerticalOffset(boolean forceNormal) {
4024        int voffset = 0;
4025        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4026
4027        Layout l = mLayout;
4028        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4029            l = mHintLayout;
4030        }
4031
4032        if (gravity != Gravity.BOTTOM) {
4033            int boxht;
4034
4035            if (l == mHintLayout) {
4036                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
4037                        getCompoundPaddingBottom();
4038            } else {
4039                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
4040                        getExtendedPaddingBottom();
4041            }
4042            int textht = l.getHeight();
4043
4044            if (textht < boxht) {
4045                if (gravity == Gravity.TOP)
4046                    voffset = boxht - textht;
4047                else // (gravity == Gravity.CENTER_VERTICAL)
4048                    voffset = (boxht - textht) >> 1;
4049            }
4050        }
4051        return voffset;
4052    }
4053
4054    private void invalidateCursorPath() {
4055        if (mHighlightPathBogus) {
4056            invalidateCursor();
4057        } else {
4058            final int horizontalPadding = getCompoundPaddingLeft();
4059            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4060
4061            if (getEditor().mCursorCount == 0) {
4062                synchronized (TEMP_RECTF) {
4063                    /*
4064                     * The reason for this concern about the thickness of the
4065                     * cursor and doing the floor/ceil on the coordinates is that
4066                     * some EditTexts (notably textfields in the Browser) have
4067                     * anti-aliased text where not all the characters are
4068                     * necessarily at integer-multiple locations.  This should
4069                     * make sure the entire cursor gets invalidated instead of
4070                     * sometimes missing half a pixel.
4071                     */
4072                    float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
4073                    if (thick < 1.0f) {
4074                        thick = 1.0f;
4075                    }
4076
4077                    thick /= 2.0f;
4078
4079                    // mHighlightPath is guaranteed to be non null at that point.
4080                    mHighlightPath.computeBounds(TEMP_RECTF, false);
4081
4082                    invalidate((int) FloatMath.floor(horizontalPadding + TEMP_RECTF.left - thick),
4083                            (int) FloatMath.floor(verticalPadding + TEMP_RECTF.top - thick),
4084                            (int) FloatMath.ceil(horizontalPadding + TEMP_RECTF.right + thick),
4085                            (int) FloatMath.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
4086                }
4087            } else {
4088                for (int i = 0; i < getEditor().mCursorCount; i++) {
4089                    Rect bounds = getEditor().mCursorDrawable[i].getBounds();
4090                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
4091                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
4092                }
4093            }
4094        }
4095    }
4096
4097    private void invalidateCursor() {
4098        int where = getSelectionEnd();
4099
4100        invalidateCursor(where, where, where);
4101    }
4102
4103    private void invalidateCursor(int a, int b, int c) {
4104        if (a >= 0 || b >= 0 || c >= 0) {
4105            int start = Math.min(Math.min(a, b), c);
4106            int end = Math.max(Math.max(a, b), c);
4107            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
4108        }
4109    }
4110
4111    /**
4112     * Invalidates the region of text enclosed between the start and end text offsets.
4113     *
4114     * @hide
4115     */
4116    void invalidateRegion(int start, int end, boolean invalidateCursor) {
4117        if (mLayout == null) {
4118            invalidate();
4119        } else {
4120                int lineStart = mLayout.getLineForOffset(start);
4121                int top = mLayout.getLineTop(lineStart);
4122
4123                // This is ridiculous, but the descent from the line above
4124                // can hang down into the line we really want to redraw,
4125                // so we have to invalidate part of the line above to make
4126                // sure everything that needs to be redrawn really is.
4127                // (But not the whole line above, because that would cause
4128                // the same problem with the descenders on the line above it!)
4129                if (lineStart > 0) {
4130                    top -= mLayout.getLineDescent(lineStart - 1);
4131                }
4132
4133                int lineEnd;
4134
4135                if (start == end)
4136                    lineEnd = lineStart;
4137                else
4138                    lineEnd = mLayout.getLineForOffset(end);
4139
4140                int bottom = mLayout.getLineBottom(lineEnd);
4141
4142                // mEditor can be null in case selection is set programmatically.
4143                if (invalidateCursor && mEditor != null) {
4144                    for (int i = 0; i < getEditor().mCursorCount; i++) {
4145                        Rect bounds = getEditor().mCursorDrawable[i].getBounds();
4146                        top = Math.min(top, bounds.top);
4147                        bottom = Math.max(bottom, bounds.bottom);
4148                    }
4149                }
4150
4151                final int compoundPaddingLeft = getCompoundPaddingLeft();
4152                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4153
4154                int left, right;
4155                if (lineStart == lineEnd && !invalidateCursor) {
4156                    left = (int) mLayout.getPrimaryHorizontal(start);
4157                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
4158                    left += compoundPaddingLeft;
4159                    right += compoundPaddingLeft;
4160                } else {
4161                    // Rectangle bounding box when the region spans several lines
4162                    left = compoundPaddingLeft;
4163                    right = getWidth() - getCompoundPaddingRight();
4164                }
4165
4166                invalidate(mScrollX + left, verticalPadding + top,
4167                        mScrollX + right, verticalPadding + bottom);
4168        }
4169    }
4170
4171    private void registerForPreDraw() {
4172        if (!mPreDrawRegistered) {
4173            getViewTreeObserver().addOnPreDrawListener(this);
4174            mPreDrawRegistered = true;
4175        }
4176    }
4177
4178    /**
4179     * {@inheritDoc}
4180     */
4181    public boolean onPreDraw() {
4182        if (mLayout == null) {
4183            assumeLayout();
4184        }
4185
4186        boolean changed = false;
4187
4188        if (mMovement != null) {
4189            /* This code also provides auto-scrolling when a cursor is moved using a
4190             * CursorController (insertion point or selection limits).
4191             * For selection, ensure start or end is visible depending on controller's state.
4192             */
4193            int curs = getSelectionEnd();
4194            // Do not create the controller if it is not already created.
4195            if (mEditor != null && getEditor().mSelectionModifierCursorController != null &&
4196                    getEditor().mSelectionModifierCursorController.isSelectionStartDragged()) {
4197                curs = getSelectionStart();
4198            }
4199
4200            /*
4201             * TODO: This should really only keep the end in view if
4202             * it already was before the text changed.  I'm not sure
4203             * of a good way to tell from here if it was.
4204             */
4205            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
4206                curs = mText.length();
4207            }
4208
4209            if (curs >= 0) {
4210                changed = bringPointIntoView(curs);
4211            }
4212        } else {
4213            changed = bringTextIntoView();
4214        }
4215
4216        // This has to be checked here since:
4217        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
4218        //   a screen rotation) since layout is not yet initialized at that point.
4219        if (mEditor != null && getEditor().mCreatedWithASelection) {
4220            startSelectionActionMode();
4221            getEditor().mCreatedWithASelection = false;
4222        }
4223
4224        // Phone specific code (there is no ExtractEditText on tablets).
4225        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
4226        // not be set. Do the test here instead.
4227        if (this instanceof ExtractEditText && hasSelection()) {
4228            startSelectionActionMode();
4229        }
4230
4231        getViewTreeObserver().removeOnPreDrawListener(this);
4232        mPreDrawRegistered = false;
4233
4234        return !changed;
4235    }
4236
4237    @Override
4238    protected void onAttachedToWindow() {
4239        super.onAttachedToWindow();
4240
4241        mTemporaryDetach = false;
4242
4243        if (mEditor != null && getEditor().mShowErrorAfterAttach) {
4244            showError();
4245            getEditor().mShowErrorAfterAttach = false;
4246        }
4247
4248        // Resolve drawables as the layout direction has been resolved
4249        resolveDrawables();
4250
4251        if (mEditor != null) getEditor().onAttachedToWindow();
4252    }
4253
4254    @Override
4255    protected void onDetachedFromWindow() {
4256        super.onDetachedFromWindow();
4257
4258        if (mPreDrawRegistered) {
4259            getViewTreeObserver().removeOnPreDrawListener(this);
4260            mPreDrawRegistered = false;
4261        }
4262
4263        resetResolvedDrawables();
4264
4265        if (mEditor != null) getEditor().onDetachedFromWindow();
4266    }
4267
4268    @Override
4269    protected boolean isPaddingOffsetRequired() {
4270        return mShadowRadius != 0 || mDrawables != null;
4271    }
4272
4273    @Override
4274    protected int getLeftPaddingOffset() {
4275        return getCompoundPaddingLeft() - mPaddingLeft +
4276                (int) Math.min(0, mShadowDx - mShadowRadius);
4277    }
4278
4279    @Override
4280    protected int getTopPaddingOffset() {
4281        return (int) Math.min(0, mShadowDy - mShadowRadius);
4282    }
4283
4284    @Override
4285    protected int getBottomPaddingOffset() {
4286        return (int) Math.max(0, mShadowDy + mShadowRadius);
4287    }
4288
4289    @Override
4290    protected int getRightPaddingOffset() {
4291        return -(getCompoundPaddingRight() - mPaddingRight) +
4292                (int) Math.max(0, mShadowDx + mShadowRadius);
4293    }
4294
4295    @Override
4296    protected boolean verifyDrawable(Drawable who) {
4297        final boolean verified = super.verifyDrawable(who);
4298        if (!verified && mDrawables != null) {
4299            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
4300                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom ||
4301                    who == mDrawables.mDrawableStart || who == mDrawables.mDrawableEnd;
4302        }
4303        return verified;
4304    }
4305
4306    @Override
4307    public void jumpDrawablesToCurrentState() {
4308        super.jumpDrawablesToCurrentState();
4309        if (mDrawables != null) {
4310            if (mDrawables.mDrawableLeft != null) {
4311                mDrawables.mDrawableLeft.jumpToCurrentState();
4312            }
4313            if (mDrawables.mDrawableTop != null) {
4314                mDrawables.mDrawableTop.jumpToCurrentState();
4315            }
4316            if (mDrawables.mDrawableRight != null) {
4317                mDrawables.mDrawableRight.jumpToCurrentState();
4318            }
4319            if (mDrawables.mDrawableBottom != null) {
4320                mDrawables.mDrawableBottom.jumpToCurrentState();
4321            }
4322            if (mDrawables.mDrawableStart != null) {
4323                mDrawables.mDrawableStart.jumpToCurrentState();
4324            }
4325            if (mDrawables.mDrawableEnd != null) {
4326                mDrawables.mDrawableEnd.jumpToCurrentState();
4327            }
4328        }
4329    }
4330
4331    @Override
4332    public void invalidateDrawable(Drawable drawable) {
4333        if (verifyDrawable(drawable)) {
4334            final Rect dirty = drawable.getBounds();
4335            int scrollX = mScrollX;
4336            int scrollY = mScrollY;
4337
4338            // IMPORTANT: The coordinates below are based on the coordinates computed
4339            // for each compound drawable in onDraw(). Make sure to update each section
4340            // accordingly.
4341            final TextView.Drawables drawables = mDrawables;
4342            if (drawables != null) {
4343                if (drawable == drawables.mDrawableLeft) {
4344                    final int compoundPaddingTop = getCompoundPaddingTop();
4345                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4346                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4347
4348                    scrollX += mPaddingLeft;
4349                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
4350                } else if (drawable == drawables.mDrawableRight) {
4351                    final int compoundPaddingTop = getCompoundPaddingTop();
4352                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4353                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4354
4355                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
4356                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
4357                } else if (drawable == drawables.mDrawableTop) {
4358                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4359                    final int compoundPaddingRight = getCompoundPaddingRight();
4360                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4361
4362                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
4363                    scrollY += mPaddingTop;
4364                } else if (drawable == drawables.mDrawableBottom) {
4365                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4366                    final int compoundPaddingRight = getCompoundPaddingRight();
4367                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4368
4369                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
4370                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
4371                }
4372            }
4373
4374            invalidate(dirty.left + scrollX, dirty.top + scrollY,
4375                    dirty.right + scrollX, dirty.bottom + scrollY);
4376        }
4377    }
4378
4379    @Override
4380    public int getResolvedLayoutDirection(Drawable who) {
4381        if (who == null) return View.LAYOUT_DIRECTION_LTR;
4382        if (mDrawables != null) {
4383            final Drawables drawables = mDrawables;
4384            if (who == drawables.mDrawableLeft || who == drawables.mDrawableRight ||
4385                who == drawables.mDrawableTop || who == drawables.mDrawableBottom ||
4386                who == drawables.mDrawableStart || who == drawables.mDrawableEnd) {
4387                return getResolvedLayoutDirection();
4388            }
4389        }
4390        return super.getResolvedLayoutDirection(who);
4391    }
4392
4393    @Override
4394    protected boolean onSetAlpha(int alpha) {
4395        // Alpha is supported if and only if the drawing can be done in one pass.
4396        // TODO text with spans with a background color currently do not respect this alpha.
4397        if (getBackground() == null) {
4398            if (mCurrentAlpha != alpha) {
4399                mCurrentAlpha = alpha;
4400                final Drawables dr = mDrawables;
4401                if (dr != null) {
4402                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.mutate().setAlpha(alpha);
4403                    if (dr.mDrawableTop != null) dr.mDrawableTop.mutate().setAlpha(alpha);
4404                    if (dr.mDrawableRight != null) dr.mDrawableRight.mutate().setAlpha(alpha);
4405                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.mutate().setAlpha(alpha);
4406                    if (dr.mDrawableStart != null) dr.mDrawableStart.mutate().setAlpha(alpha);
4407                    if (dr.mDrawableEnd != null) dr.mDrawableEnd.mutate().setAlpha(alpha);
4408                }
4409                if (mEditor != null) getEditor().mTextDisplayListIsValid = false;
4410            }
4411            return true;
4412        }
4413
4414        if (mCurrentAlpha != 255) {
4415            if (mEditor != null) getEditor().mTextDisplayListIsValid = false;
4416        }
4417        mCurrentAlpha = 255;
4418        return false;
4419    }
4420
4421    /**
4422     * When a TextView is used to display a useful piece of information to the user (such as a
4423     * contact's address), it should be made selectable, so that the user can select and copy this
4424     * content.
4425     *
4426     * Use {@link #setTextIsSelectable(boolean)} or the
4427     * {@link android.R.styleable#TextView_textIsSelectable} XML attribute to make this TextView
4428     * selectable (text is not selectable by default).
4429     *
4430     * Note that this method simply returns the state of this flag. Although this flag has to be set
4431     * in order to select text in non-editable TextView, the content of an {@link EditText} can
4432     * always be selected, independently of the value of this flag.
4433     *
4434     * @return True if the text displayed in this TextView can be selected by the user.
4435     *
4436     * @attr ref android.R.styleable#TextView_textIsSelectable
4437     */
4438    public boolean isTextSelectable() {
4439        return mEditor == null ? false : getEditor().mTextIsSelectable;
4440    }
4441
4442    /**
4443     * Sets whether or not (default) the content of this view is selectable by the user.
4444     *
4445     * Note that this methods affect the {@link #setFocusable(boolean)},
4446     * {@link #setFocusableInTouchMode(boolean)} {@link #setClickable(boolean)} and
4447     * {@link #setLongClickable(boolean)} states and you may want to restore these if they were
4448     * customized.
4449     *
4450     * See {@link #isTextSelectable} for details.
4451     *
4452     * @param selectable Whether or not the content of this TextView should be selectable.
4453     */
4454    public void setTextIsSelectable(boolean selectable) {
4455        if (!selectable && mEditor == null) return; // false is default value with no edit data
4456
4457        createEditorIfNeeded("setTextIsSelectable");
4458        if (getEditor().mTextIsSelectable == selectable) return;
4459
4460        getEditor().mTextIsSelectable = selectable;
4461        setFocusableInTouchMode(selectable);
4462        setFocusable(selectable);
4463        setClickable(selectable);
4464        setLongClickable(selectable);
4465
4466        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
4467
4468        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
4469        setText(getText(), selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
4470
4471        // Called by setText above, but safer in case of future code changes
4472        prepareCursorControllers();
4473    }
4474
4475    @Override
4476    protected int[] onCreateDrawableState(int extraSpace) {
4477        final int[] drawableState;
4478
4479        if (mSingleLine) {
4480            drawableState = super.onCreateDrawableState(extraSpace);
4481        } else {
4482            drawableState = super.onCreateDrawableState(extraSpace + 1);
4483            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
4484        }
4485
4486        if (isTextSelectable()) {
4487            // Disable pressed state, which was introduced when TextView was made clickable.
4488            // Prevents text color change.
4489            // setClickable(false) would have a similar effect, but it also disables focus changes
4490            // and long press actions, which are both needed by text selection.
4491            final int length = drawableState.length;
4492            for (int i = 0; i < length; i++) {
4493                if (drawableState[i] == R.attr.state_pressed) {
4494                    final int[] nonPressedState = new int[length - 1];
4495                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
4496                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
4497                    return nonPressedState;
4498                }
4499            }
4500        }
4501
4502        return drawableState;
4503    }
4504
4505    private Path getUpdatedHighlightPath() {
4506        Path highlight = null;
4507        Paint highlightPaint = mHighlightPaint;
4508
4509        final int selStart = getSelectionStart();
4510        final int selEnd = getSelectionEnd();
4511        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
4512            if (selStart == selEnd) {
4513                if (mEditor != null && isCursorVisible() &&
4514                        (SystemClock.uptimeMillis() - getEditor().mShowCursor) % (2 * BLINK) < BLINK) {
4515                    if (mHighlightPathBogus) {
4516                        if (mHighlightPath == null) mHighlightPath = new Path();
4517                        mHighlightPath.reset();
4518                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
4519                        getEditor().updateCursorsPositions();
4520                        mHighlightPathBogus = false;
4521                    }
4522
4523                    // XXX should pass to skin instead of drawing directly
4524                    highlightPaint.setColor(mCurTextColor);
4525                    if (mCurrentAlpha != 255) {
4526                        highlightPaint.setAlpha(
4527                                (mCurrentAlpha * Color.alpha(mCurTextColor)) / 255);
4528                    }
4529                    highlightPaint.setStyle(Paint.Style.STROKE);
4530                    highlight = mHighlightPath;
4531                }
4532            } else {
4533                if (mHighlightPathBogus) {
4534                    if (mHighlightPath == null) mHighlightPath = new Path();
4535                    mHighlightPath.reset();
4536                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4537                    mHighlightPathBogus = false;
4538                }
4539
4540                // XXX should pass to skin instead of drawing directly
4541                highlightPaint.setColor(mHighlightColor);
4542                if (mCurrentAlpha != 255) {
4543                    highlightPaint.setAlpha(
4544                            (mCurrentAlpha * Color.alpha(mHighlightColor)) / 255);
4545                }
4546                highlightPaint.setStyle(Paint.Style.FILL);
4547
4548                highlight = mHighlightPath;
4549            }
4550        }
4551        return highlight;
4552    }
4553
4554    @Override
4555    protected void onDraw(Canvas canvas) {
4556        if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return;
4557
4558        restartMarqueeIfNeeded();
4559
4560        // Draw the background for this view
4561        super.onDraw(canvas);
4562
4563        final int compoundPaddingLeft = getCompoundPaddingLeft();
4564        final int compoundPaddingTop = getCompoundPaddingTop();
4565        final int compoundPaddingRight = getCompoundPaddingRight();
4566        final int compoundPaddingBottom = getCompoundPaddingBottom();
4567        final int scrollX = mScrollX;
4568        final int scrollY = mScrollY;
4569        final int right = mRight;
4570        final int left = mLeft;
4571        final int bottom = mBottom;
4572        final int top = mTop;
4573
4574        final Drawables dr = mDrawables;
4575        if (dr != null) {
4576            /*
4577             * Compound, not extended, because the icon is not clipped
4578             * if the text height is smaller.
4579             */
4580
4581            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
4582            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
4583
4584            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4585            // Make sure to update invalidateDrawable() when changing this code.
4586            if (dr.mDrawableLeft != null) {
4587                canvas.save();
4588                canvas.translate(scrollX + mPaddingLeft,
4589                                 scrollY + compoundPaddingTop +
4590                                 (vspace - dr.mDrawableHeightLeft) / 2);
4591                dr.mDrawableLeft.draw(canvas);
4592                canvas.restore();
4593            }
4594
4595            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4596            // Make sure to update invalidateDrawable() when changing this code.
4597            if (dr.mDrawableRight != null) {
4598                canvas.save();
4599                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
4600                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
4601                dr.mDrawableRight.draw(canvas);
4602                canvas.restore();
4603            }
4604
4605            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4606            // Make sure to update invalidateDrawable() when changing this code.
4607            if (dr.mDrawableTop != null) {
4608                canvas.save();
4609                canvas.translate(scrollX + compoundPaddingLeft + (hspace - dr.mDrawableWidthTop) / 2,
4610                        scrollY + mPaddingTop);
4611                dr.mDrawableTop.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.mDrawableBottom != null) {
4618                canvas.save();
4619                canvas.translate(scrollX + compoundPaddingLeft +
4620                        (hspace - dr.mDrawableWidthBottom) / 2,
4621                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
4622                dr.mDrawableBottom.draw(canvas);
4623                canvas.restore();
4624            }
4625        }
4626
4627        int color = mCurTextColor;
4628
4629        if (mLayout == null) {
4630            assumeLayout();
4631        }
4632
4633        Layout layout = mLayout;
4634
4635        if (mHint != null && mText.length() == 0) {
4636            if (mHintTextColor != null) {
4637                color = mCurHintTextColor;
4638            }
4639
4640            layout = mHintLayout;
4641        }
4642
4643        mTextPaint.setColor(color);
4644        if (mCurrentAlpha != 255) {
4645            // If set, the alpha will override the color's alpha. Multiply the alphas.
4646            mTextPaint.setAlpha((mCurrentAlpha * Color.alpha(color)) / 255);
4647        }
4648        mTextPaint.drawableState = getDrawableState();
4649
4650        canvas.save();
4651        /*  Would be faster if we didn't have to do this. Can we chop the
4652            (displayable) text so that we don't need to do this ever?
4653        */
4654
4655        int extendedPaddingTop = getExtendedPaddingTop();
4656        int extendedPaddingBottom = getExtendedPaddingBottom();
4657
4658        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4659        final int maxScrollY = mLayout.getHeight() - vspace;
4660
4661        float clipLeft = compoundPaddingLeft + scrollX;
4662        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
4663        float clipRight = right - left - compoundPaddingRight + scrollX;
4664        float clipBottom = bottom - top + scrollY -
4665                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
4666
4667        if (mShadowRadius != 0) {
4668            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
4669            clipRight += Math.max(0, mShadowDx + mShadowRadius);
4670
4671            clipTop += Math.min(0, mShadowDy - mShadowRadius);
4672            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
4673        }
4674
4675        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
4676
4677        int voffsetText = 0;
4678        int voffsetCursor = 0;
4679
4680        // translate in by our padding
4681        /* shortcircuit calling getVerticaOffset() */
4682        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4683            voffsetText = getVerticalOffset(false);
4684            voffsetCursor = getVerticalOffset(true);
4685        }
4686        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
4687
4688        final int layoutDirection = getResolvedLayoutDirection();
4689        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
4690        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
4691                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
4692            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
4693                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
4694                canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft -
4695                        getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f);
4696            }
4697
4698            if (mMarquee != null && mMarquee.isRunning()) {
4699                canvas.translate(-mMarquee.mScroll, 0.0f);
4700            }
4701        }
4702
4703        final int cursorOffsetVertical = voffsetCursor - voffsetText;
4704
4705        Path highlight = getUpdatedHighlightPath();
4706        if (mEditor != null) {
4707            getEditor().onDraw(canvas, layout, highlight, cursorOffsetVertical);
4708        } else {
4709            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4710
4711            if (mMarquee != null && mMarquee.shouldDrawGhost()) {
4712                canvas.translate((int) mMarquee.getGhostOffset(), 0.0f);
4713                layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4714            }
4715        }
4716
4717        canvas.restore();
4718    }
4719
4720    @Override
4721    public void getFocusedRect(Rect r) {
4722        if (mLayout == null) {
4723            super.getFocusedRect(r);
4724            return;
4725        }
4726
4727        int selEnd = getSelectionEnd();
4728        if (selEnd < 0) {
4729            super.getFocusedRect(r);
4730            return;
4731        }
4732
4733        int selStart = getSelectionStart();
4734        if (selStart < 0 || selStart >= selEnd) {
4735            int line = mLayout.getLineForOffset(selEnd);
4736            r.top = mLayout.getLineTop(line);
4737            r.bottom = mLayout.getLineBottom(line);
4738            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
4739            r.right = r.left + 4;
4740        } else {
4741            int lineStart = mLayout.getLineForOffset(selStart);
4742            int lineEnd = mLayout.getLineForOffset(selEnd);
4743            r.top = mLayout.getLineTop(lineStart);
4744            r.bottom = mLayout.getLineBottom(lineEnd);
4745            if (lineStart == lineEnd) {
4746                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
4747                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
4748            } else {
4749                // Selection extends across multiple lines -- make the focused
4750                // rect cover the entire width.
4751                if (mHighlightPathBogus) {
4752                    if (mHighlightPath == null) mHighlightPath = new Path();
4753                    mHighlightPath.reset();
4754                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4755                    mHighlightPathBogus = false;
4756                }
4757                synchronized (TEMP_RECTF) {
4758                    mHighlightPath.computeBounds(TEMP_RECTF, true);
4759                    r.left = (int)TEMP_RECTF.left-1;
4760                    r.right = (int)TEMP_RECTF.right+1;
4761                }
4762            }
4763        }
4764
4765        // Adjust for padding and gravity.
4766        int paddingLeft = getCompoundPaddingLeft();
4767        int paddingTop = getExtendedPaddingTop();
4768        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4769            paddingTop += getVerticalOffset(false);
4770        }
4771        r.offset(paddingLeft, paddingTop);
4772        int paddingBottom = getExtendedPaddingBottom();
4773        r.bottom += paddingBottom;
4774    }
4775
4776    /**
4777     * Return the number of lines of text, or 0 if the internal Layout has not
4778     * been built.
4779     */
4780    public int getLineCount() {
4781        return mLayout != null ? mLayout.getLineCount() : 0;
4782    }
4783
4784    /**
4785     * Return the baseline for the specified line (0...getLineCount() - 1)
4786     * If bounds is not null, return the top, left, right, bottom extents
4787     * of the specified line in it. If the internal Layout has not been built,
4788     * return 0 and set bounds to (0, 0, 0, 0)
4789     * @param line which line to examine (0..getLineCount() - 1)
4790     * @param bounds Optional. If not null, it returns the extent of the line
4791     * @return the Y-coordinate of the baseline
4792     */
4793    public int getLineBounds(int line, Rect bounds) {
4794        if (mLayout == null) {
4795            if (bounds != null) {
4796                bounds.set(0, 0, 0, 0);
4797            }
4798            return 0;
4799        }
4800        else {
4801            int baseline = mLayout.getLineBounds(line, bounds);
4802
4803            int voffset = getExtendedPaddingTop();
4804            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4805                voffset += getVerticalOffset(true);
4806            }
4807            if (bounds != null) {
4808                bounds.offset(getCompoundPaddingLeft(), voffset);
4809            }
4810            return baseline + voffset;
4811        }
4812    }
4813
4814    @Override
4815    public int getBaseline() {
4816        if (mLayout == null) {
4817            return super.getBaseline();
4818        }
4819
4820        int voffset = 0;
4821        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4822            voffset = getVerticalOffset(true);
4823        }
4824
4825        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
4826    }
4827
4828    /**
4829     * @hide
4830     * @param offsetRequired
4831     */
4832    @Override
4833    protected int getFadeTop(boolean offsetRequired) {
4834        if (mLayout == null) return 0;
4835
4836        int voffset = 0;
4837        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4838            voffset = getVerticalOffset(true);
4839        }
4840
4841        if (offsetRequired) voffset += getTopPaddingOffset();
4842
4843        return getExtendedPaddingTop() + voffset;
4844    }
4845
4846    /**
4847     * @hide
4848     * @param offsetRequired
4849     */
4850    @Override
4851    protected int getFadeHeight(boolean offsetRequired) {
4852        return mLayout != null ? mLayout.getHeight() : 0;
4853    }
4854
4855    @Override
4856    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
4857        if (keyCode == KeyEvent.KEYCODE_BACK) {
4858            boolean isInSelectionMode = mEditor != null && getEditor().mSelectionActionMode != null;
4859
4860            if (isInSelectionMode) {
4861                if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
4862                    KeyEvent.DispatcherState state = getKeyDispatcherState();
4863                    if (state != null) {
4864                        state.startTracking(event, this);
4865                    }
4866                    return true;
4867                } else if (event.getAction() == KeyEvent.ACTION_UP) {
4868                    KeyEvent.DispatcherState state = getKeyDispatcherState();
4869                    if (state != null) {
4870                        state.handleUpEvent(event);
4871                    }
4872                    if (event.isTracking() && !event.isCanceled()) {
4873                        stopSelectionActionMode();
4874                        return true;
4875                    }
4876                }
4877            }
4878        }
4879        return super.onKeyPreIme(keyCode, event);
4880    }
4881
4882    @Override
4883    public boolean onKeyDown(int keyCode, KeyEvent event) {
4884        int which = doKeyDown(keyCode, event, null);
4885        if (which == 0) {
4886            // Go through default dispatching.
4887            return super.onKeyDown(keyCode, event);
4888        }
4889
4890        return true;
4891    }
4892
4893    @Override
4894    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
4895        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
4896
4897        int which = doKeyDown(keyCode, down, event);
4898        if (which == 0) {
4899            // Go through default dispatching.
4900            return super.onKeyMultiple(keyCode, repeatCount, event);
4901        }
4902        if (which == -1) {
4903            // Consumed the whole thing.
4904            return true;
4905        }
4906
4907        repeatCount--;
4908
4909        // We are going to dispatch the remaining events to either the input
4910        // or movement method.  To do this, we will just send a repeated stream
4911        // of down and up events until we have done the complete repeatCount.
4912        // It would be nice if those interfaces had an onKeyMultiple() method,
4913        // but adding that is a more complicated change.
4914        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
4915        if (which == 1) {
4916            // mEditor and getEditor().mInput are not null from doKeyDown
4917            getEditor().mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
4918            while (--repeatCount > 0) {
4919                getEditor().mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
4920                getEditor().mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
4921            }
4922            hideErrorIfUnchanged();
4923
4924        } else if (which == 2) {
4925            // mMovement is not null from doKeyDown
4926            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4927            while (--repeatCount > 0) {
4928                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
4929                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4930            }
4931        }
4932
4933        return true;
4934    }
4935
4936    /**
4937     * Returns true if pressing ENTER in this field advances focus instead
4938     * of inserting the character.  This is true mostly in single-line fields,
4939     * but also in mail addresses and subjects which will display on multiple
4940     * lines but where it doesn't make sense to insert newlines.
4941     */
4942    private boolean shouldAdvanceFocusOnEnter() {
4943        if (getKeyListener() == null) {
4944            return false;
4945        }
4946
4947        if (mSingleLine) {
4948            return true;
4949        }
4950
4951        if (mEditor != null && (getEditor().mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
4952            int variation = getEditor().mInputType & EditorInfo.TYPE_MASK_VARIATION;
4953            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
4954                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
4955                return true;
4956            }
4957        }
4958
4959        return false;
4960    }
4961
4962    /**
4963     * Returns true if pressing TAB in this field advances focus instead
4964     * of inserting the character.  Insert tabs only in multi-line editors.
4965     */
4966    private boolean shouldAdvanceFocusOnTab() {
4967        if (getKeyListener() != null && !mSingleLine) {
4968            if (mEditor != null && (getEditor().mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
4969                int variation = getEditor().mInputType & EditorInfo.TYPE_MASK_VARIATION;
4970                if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
4971                        || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
4972                    return false;
4973                }
4974            }
4975        }
4976        return true;
4977    }
4978
4979    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
4980        if (!isEnabled()) {
4981            return 0;
4982        }
4983
4984        switch (keyCode) {
4985            case KeyEvent.KEYCODE_ENTER:
4986                if (event.hasNoModifiers()) {
4987                    // When mInputContentType is set, we know that we are
4988                    // running in a "modern" cupcake environment, so don't need
4989                    // to worry about the application trying to capture
4990                    // enter key events.
4991                    if (mEditor != null && getEditor().mInputContentType != null) {
4992                        // If there is an action listener, given them a
4993                        // chance to consume the event.
4994                        if (getEditor().mInputContentType.onEditorActionListener != null &&
4995                                getEditor().mInputContentType.onEditorActionListener.onEditorAction(
4996                                this, EditorInfo.IME_NULL, event)) {
4997                            getEditor().mInputContentType.enterDown = true;
4998                            // We are consuming the enter key for them.
4999                            return -1;
5000                        }
5001                    }
5002
5003                    // If our editor should move focus when enter is pressed, or
5004                    // this is a generated event from an IME action button, then
5005                    // don't let it be inserted into the text.
5006                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5007                            || shouldAdvanceFocusOnEnter()) {
5008                        if (hasOnClickListeners()) {
5009                            return 0;
5010                        }
5011                        return -1;
5012                    }
5013                }
5014                break;
5015
5016            case KeyEvent.KEYCODE_DPAD_CENTER:
5017                if (event.hasNoModifiers()) {
5018                    if (shouldAdvanceFocusOnEnter()) {
5019                        return 0;
5020                    }
5021                }
5022                break;
5023
5024            case KeyEvent.KEYCODE_TAB:
5025                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
5026                    if (shouldAdvanceFocusOnTab()) {
5027                        return 0;
5028                    }
5029                }
5030                break;
5031
5032                // Has to be done on key down (and not on key up) to correctly be intercepted.
5033            case KeyEvent.KEYCODE_BACK:
5034                if (mEditor != null && getEditor().mSelectionActionMode != null) {
5035                    stopSelectionActionMode();
5036                    return -1;
5037                }
5038                break;
5039        }
5040
5041        if (mEditor != null && getEditor().mKeyListener != null) {
5042            resetErrorChangedFlag();
5043
5044            boolean doDown = true;
5045            if (otherEvent != null) {
5046                try {
5047                    beginBatchEdit();
5048                    final boolean handled = getEditor().mKeyListener.onKeyOther(this, (Editable) mText, otherEvent);
5049                    hideErrorIfUnchanged();
5050                    doDown = false;
5051                    if (handled) {
5052                        return -1;
5053                    }
5054                } catch (AbstractMethodError e) {
5055                    // onKeyOther was added after 1.0, so if it isn't
5056                    // implemented we need to try to dispatch as a regular down.
5057                } finally {
5058                    endBatchEdit();
5059                }
5060            }
5061
5062            if (doDown) {
5063                beginBatchEdit();
5064                final boolean handled = getEditor().mKeyListener.onKeyDown(this, (Editable) mText, keyCode, event);
5065                endBatchEdit();
5066                hideErrorIfUnchanged();
5067                if (handled) return 1;
5068            }
5069        }
5070
5071        // bug 650865: sometimes we get a key event before a layout.
5072        // don't try to move around if we don't know the layout.
5073
5074        if (mMovement != null && mLayout != null) {
5075            boolean doDown = true;
5076            if (otherEvent != null) {
5077                try {
5078                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
5079                            otherEvent);
5080                    doDown = false;
5081                    if (handled) {
5082                        return -1;
5083                    }
5084                } catch (AbstractMethodError e) {
5085                    // onKeyOther was added after 1.0, so if it isn't
5086                    // implemented we need to try to dispatch as a regular down.
5087                }
5088            }
5089            if (doDown) {
5090                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
5091                    return 2;
5092            }
5093        }
5094
5095        return 0;
5096    }
5097
5098    /**
5099     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
5100     * can be recorded.
5101     * @hide
5102     */
5103    public void resetErrorChangedFlag() {
5104        /*
5105         * Keep track of what the error was before doing the input
5106         * so that if an input filter changed the error, we leave
5107         * that error showing.  Otherwise, we take down whatever
5108         * error was showing when the user types something.
5109         */
5110        if (mEditor != null) getEditor().mErrorWasChanged = false;
5111    }
5112
5113    /**
5114     * @hide
5115     */
5116    public void hideErrorIfUnchanged() {
5117        if (mEditor != null && getEditor().mError != null && !getEditor().mErrorWasChanged) {
5118            setError(null, null);
5119        }
5120    }
5121
5122    @Override
5123    public boolean onKeyUp(int keyCode, KeyEvent event) {
5124        if (!isEnabled()) {
5125            return super.onKeyUp(keyCode, event);
5126        }
5127
5128        switch (keyCode) {
5129            case KeyEvent.KEYCODE_DPAD_CENTER:
5130                if (event.hasNoModifiers()) {
5131                    /*
5132                     * If there is a click listener, just call through to
5133                     * super, which will invoke it.
5134                     *
5135                     * If there isn't a click listener, try to show the soft
5136                     * input method.  (It will also
5137                     * call performClick(), but that won't do anything in
5138                     * this case.)
5139                     */
5140                    if (!hasOnClickListeners()) {
5141                        if (mMovement != null && mText instanceof Editable
5142                                && mLayout != null && onCheckIsTextEditor()) {
5143                            InputMethodManager imm = InputMethodManager.peekInstance();
5144                            viewClicked(imm);
5145                            if (imm != null) {
5146                                imm.showSoftInput(this, 0);
5147                            }
5148                        }
5149                    }
5150                }
5151                return super.onKeyUp(keyCode, event);
5152
5153            case KeyEvent.KEYCODE_ENTER:
5154                if (event.hasNoModifiers()) {
5155                    if (mEditor != null && getEditor().mInputContentType != null
5156                            && getEditor().mInputContentType.onEditorActionListener != null
5157                            && getEditor().mInputContentType.enterDown) {
5158                        getEditor().mInputContentType.enterDown = false;
5159                        if (getEditor().mInputContentType.onEditorActionListener.onEditorAction(
5160                                this, EditorInfo.IME_NULL, event)) {
5161                            return true;
5162                        }
5163                    }
5164
5165                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5166                            || shouldAdvanceFocusOnEnter()) {
5167                        /*
5168                         * If there is a click listener, just call through to
5169                         * super, which will invoke it.
5170                         *
5171                         * If there isn't a click listener, try to advance focus,
5172                         * but still call through to super, which will reset the
5173                         * pressed state and longpress state.  (It will also
5174                         * call performClick(), but that won't do anything in
5175                         * this case.)
5176                         */
5177                        if (!hasOnClickListeners()) {
5178                            View v = focusSearch(FOCUS_DOWN);
5179
5180                            if (v != null) {
5181                                if (!v.requestFocus(FOCUS_DOWN)) {
5182                                    throw new IllegalStateException(
5183                                            "focus search returned a view " +
5184                                            "that wasn't able to take focus!");
5185                                }
5186
5187                                /*
5188                                 * Return true because we handled the key; super
5189                                 * will return false because there was no click
5190                                 * listener.
5191                                 */
5192                                super.onKeyUp(keyCode, event);
5193                                return true;
5194                            } else if ((event.getFlags()
5195                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
5196                                // No target for next focus, but make sure the IME
5197                                // if this came from it.
5198                                InputMethodManager imm = InputMethodManager.peekInstance();
5199                                if (imm != null && imm.isActive(this)) {
5200                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
5201                                }
5202                            }
5203                        }
5204                    }
5205                    return super.onKeyUp(keyCode, event);
5206                }
5207                break;
5208        }
5209
5210        if (mEditor != null && getEditor().mKeyListener != null)
5211            if (getEditor().mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
5212                return true;
5213
5214        if (mMovement != null && mLayout != null)
5215            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
5216                return true;
5217
5218        return super.onKeyUp(keyCode, event);
5219    }
5220
5221    @Override
5222    public boolean onCheckIsTextEditor() {
5223        return mEditor != null && getEditor().mInputType != EditorInfo.TYPE_NULL;
5224    }
5225
5226    @Override
5227    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
5228        createEditorIfNeeded("onCreateInputConnection");
5229        if (onCheckIsTextEditor() && isEnabled()) {
5230            if (getEditor().mInputMethodState == null) {
5231                getEditor().mInputMethodState = new InputMethodState();
5232            }
5233            outAttrs.inputType = getInputType();
5234            if (getEditor().mInputContentType != null) {
5235                outAttrs.imeOptions = getEditor().mInputContentType.imeOptions;
5236                outAttrs.privateImeOptions = getEditor().mInputContentType.privateImeOptions;
5237                outAttrs.actionLabel = getEditor().mInputContentType.imeActionLabel;
5238                outAttrs.actionId = getEditor().mInputContentType.imeActionId;
5239                outAttrs.extras = getEditor().mInputContentType.extras;
5240            } else {
5241                outAttrs.imeOptions = EditorInfo.IME_NULL;
5242            }
5243            if (focusSearch(FOCUS_DOWN) != null) {
5244                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
5245            }
5246            if (focusSearch(FOCUS_UP) != null) {
5247                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
5248            }
5249            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
5250                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
5251                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
5252                    // An action has not been set, but the enter key will move to
5253                    // the next focus, so set the action to that.
5254                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
5255                } else {
5256                    // An action has not been set, and there is no focus to move
5257                    // to, so let's just supply a "done" action.
5258                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
5259                }
5260                if (!shouldAdvanceFocusOnEnter()) {
5261                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5262                }
5263            }
5264            if (isMultilineInputType(outAttrs.inputType)) {
5265                // Multi-line text editors should always show an enter key.
5266                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5267            }
5268            outAttrs.hintText = mHint;
5269            if (mText instanceof Editable) {
5270                InputConnection ic = new EditableInputConnection(this);
5271                outAttrs.initialSelStart = getSelectionStart();
5272                outAttrs.initialSelEnd = getSelectionEnd();
5273                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
5274                return ic;
5275            }
5276        }
5277        return null;
5278    }
5279
5280    /**
5281     * If this TextView contains editable content, extract a portion of it
5282     * based on the information in <var>request</var> in to <var>outText</var>.
5283     * @return Returns true if the text was successfully extracted, else false.
5284     */
5285    public boolean extractText(ExtractedTextRequest request,
5286            ExtractedText outText) {
5287        return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN,
5288                EXTRACT_UNKNOWN, outText);
5289    }
5290
5291    static final int EXTRACT_NOTHING = -2;
5292    static final int EXTRACT_UNKNOWN = -1;
5293
5294    boolean extractTextInternal(ExtractedTextRequest request,
5295            int partialStartOffset, int partialEndOffset, int delta,
5296            ExtractedText outText) {
5297        final CharSequence content = mText;
5298        if (content != null) {
5299            if (partialStartOffset != EXTRACT_NOTHING) {
5300                final int N = content.length();
5301                if (partialStartOffset < 0) {
5302                    outText.partialStartOffset = outText.partialEndOffset = -1;
5303                    partialStartOffset = 0;
5304                    partialEndOffset = N;
5305                } else {
5306                    // Now use the delta to determine the actual amount of text
5307                    // we need.
5308                    partialEndOffset += delta;
5309                    // Adjust offsets to ensure we contain full spans.
5310                    if (content instanceof Spanned) {
5311                        Spanned spanned = (Spanned)content;
5312                        Object[] spans = spanned.getSpans(partialStartOffset,
5313                                partialEndOffset, ParcelableSpan.class);
5314                        int i = spans.length;
5315                        while (i > 0) {
5316                            i--;
5317                            int j = spanned.getSpanStart(spans[i]);
5318                            if (j < partialStartOffset) partialStartOffset = j;
5319                            j = spanned.getSpanEnd(spans[i]);
5320                            if (j > partialEndOffset) partialEndOffset = j;
5321                        }
5322                    }
5323                    outText.partialStartOffset = partialStartOffset;
5324                    outText.partialEndOffset = partialEndOffset - delta;
5325
5326                    if (partialStartOffset > N) {
5327                        partialStartOffset = N;
5328                    } else if (partialStartOffset < 0) {
5329                        partialStartOffset = 0;
5330                    }
5331                    if (partialEndOffset > N) {
5332                        partialEndOffset = N;
5333                    } else if (partialEndOffset < 0) {
5334                        partialEndOffset = 0;
5335                    }
5336                }
5337                if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) {
5338                    outText.text = content.subSequence(partialStartOffset,
5339                            partialEndOffset);
5340                } else {
5341                    outText.text = TextUtils.substring(content, partialStartOffset,
5342                            partialEndOffset);
5343                }
5344            } else {
5345                outText.partialStartOffset = 0;
5346                outText.partialEndOffset = 0;
5347                outText.text = "";
5348            }
5349            outText.flags = 0;
5350            if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) {
5351                outText.flags |= ExtractedText.FLAG_SELECTING;
5352            }
5353            if (mSingleLine) {
5354                outText.flags |= ExtractedText.FLAG_SINGLE_LINE;
5355            }
5356            outText.startOffset = 0;
5357            outText.selectionStart = getSelectionStart();
5358            outText.selectionEnd = getSelectionEnd();
5359            return true;
5360        }
5361        return false;
5362    }
5363
5364    boolean reportExtractedText() {
5365        final InputMethodState ims = getEditor().mInputMethodState;
5366        if (ims != null) {
5367            final boolean contentChanged = ims.mContentChanged;
5368            if (contentChanged || ims.mSelectionModeChanged) {
5369                ims.mContentChanged = false;
5370                ims.mSelectionModeChanged = false;
5371                final ExtractedTextRequest req = ims.mExtracting;
5372                if (req != null) {
5373                    InputMethodManager imm = InputMethodManager.peekInstance();
5374                    if (imm != null) {
5375                        if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Retrieving extracted start="
5376                                + ims.mChangedStart + " end=" + ims.mChangedEnd
5377                                + " delta=" + ims.mChangedDelta);
5378                        if (ims.mChangedStart < 0 && !contentChanged) {
5379                            ims.mChangedStart = EXTRACT_NOTHING;
5380                        }
5381                        if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd,
5382                                ims.mChangedDelta, ims.mTmpExtracted)) {
5383                            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Reporting extracted start="
5384                                    + ims.mTmpExtracted.partialStartOffset
5385                                    + " end=" + ims.mTmpExtracted.partialEndOffset
5386                                    + ": " + ims.mTmpExtracted.text);
5387                            imm.updateExtractedText(this, req.token, ims.mTmpExtracted);
5388                            ims.mChangedStart = EXTRACT_UNKNOWN;
5389                            ims.mChangedEnd = EXTRACT_UNKNOWN;
5390                            ims.mChangedDelta = 0;
5391                            ims.mContentChanged = false;
5392                            return true;
5393                        }
5394                    }
5395                }
5396            }
5397        }
5398        return false;
5399    }
5400
5401    /**
5402     * This is used to remove all style-impacting spans from text before new
5403     * extracted text is being replaced into it, so that we don't have any
5404     * lingering spans applied during the replace.
5405     */
5406    static void removeParcelableSpans(Spannable spannable, int start, int end) {
5407        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
5408        int i = spans.length;
5409        while (i > 0) {
5410            i--;
5411            spannable.removeSpan(spans[i]);
5412        }
5413    }
5414
5415    /**
5416     * Apply to this text view the given extracted text, as previously
5417     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
5418     */
5419    public void setExtractedText(ExtractedText text) {
5420        Editable content = getEditableText();
5421        if (text.text != null) {
5422            if (content == null) {
5423                setText(text.text, TextView.BufferType.EDITABLE);
5424            } else if (text.partialStartOffset < 0) {
5425                removeParcelableSpans(content, 0, content.length());
5426                content.replace(0, content.length(), text.text);
5427            } else {
5428                final int N = content.length();
5429                int start = text.partialStartOffset;
5430                if (start > N) start = N;
5431                int end = text.partialEndOffset;
5432                if (end > N) end = N;
5433                removeParcelableSpans(content, start, end);
5434                content.replace(start, end, text.text);
5435            }
5436        }
5437
5438        // Now set the selection position...  make sure it is in range, to
5439        // avoid crashes.  If this is a partial update, it is possible that
5440        // the underlying text may have changed, causing us problems here.
5441        // Also we just don't want to trust clients to do the right thing.
5442        Spannable sp = (Spannable)getText();
5443        final int N = sp.length();
5444        int start = text.selectionStart;
5445        if (start < 0) start = 0;
5446        else if (start > N) start = N;
5447        int end = text.selectionEnd;
5448        if (end < 0) end = 0;
5449        else if (end > N) end = N;
5450        Selection.setSelection(sp, start, end);
5451
5452        // Finally, update the selection mode.
5453        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
5454            MetaKeyKeyListener.startSelecting(this, sp);
5455        } else {
5456            MetaKeyKeyListener.stopSelecting(this, sp);
5457        }
5458    }
5459
5460    /**
5461     * @hide
5462     */
5463    public void setExtracting(ExtractedTextRequest req) {
5464        if (getEditor().mInputMethodState != null) {
5465            getEditor().mInputMethodState.mExtracting = req;
5466        }
5467        // This would stop a possible selection mode, but no such mode is started in case
5468        // extracted mode will start. Some text is selected though, and will trigger an action mode
5469        // in the extracted view.
5470        hideControllers();
5471    }
5472
5473    /**
5474     * Called by the framework in response to a text completion from
5475     * the current input method, provided by it calling
5476     * {@link InputConnection#commitCompletion
5477     * InputConnection.commitCompletion()}.  The default implementation does
5478     * nothing; text views that are supporting auto-completion should override
5479     * this to do their desired behavior.
5480     *
5481     * @param text The auto complete text the user has selected.
5482     */
5483    public void onCommitCompletion(CompletionInfo text) {
5484        // intentionally empty
5485    }
5486
5487    /**
5488     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
5489     * a dictionnary) from the current input method, provided by it calling
5490     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
5491     * implementation flashes the background of the corrected word to provide feedback to the user.
5492     *
5493     * @param info The auto correct info about the text that was corrected.
5494     */
5495    public void onCommitCorrection(CorrectionInfo info) {
5496        if (mEditor == null) return;
5497        if (getEditor().mCorrectionHighlighter == null) {
5498            getEditor().mCorrectionHighlighter = new CorrectionHighlighter();
5499        } else {
5500            getEditor().mCorrectionHighlighter.invalidate(false);
5501        }
5502
5503        getEditor().mCorrectionHighlighter.highlight(info);
5504    }
5505
5506    public void beginBatchEdit() {
5507        if (mEditor == null) return;
5508        getEditor().mInBatchEditControllers = true;
5509        final InputMethodState ims = getEditor().mInputMethodState;
5510        if (ims != null) {
5511            int nesting = ++ims.mBatchEditNesting;
5512            if (nesting == 1) {
5513                ims.mCursorChanged = false;
5514                ims.mChangedDelta = 0;
5515                if (ims.mContentChanged) {
5516                    // We already have a pending change from somewhere else,
5517                    // so turn this into a full update.
5518                    ims.mChangedStart = 0;
5519                    ims.mChangedEnd = mText.length();
5520                } else {
5521                    ims.mChangedStart = EXTRACT_UNKNOWN;
5522                    ims.mChangedEnd = EXTRACT_UNKNOWN;
5523                    ims.mContentChanged = false;
5524                }
5525                onBeginBatchEdit();
5526            }
5527        }
5528    }
5529
5530    public void endBatchEdit() {
5531        if (mEditor == null) return;
5532        getEditor().mInBatchEditControllers = false;
5533        final InputMethodState ims = getEditor().mInputMethodState;
5534        if (ims != null) {
5535            int nesting = --ims.mBatchEditNesting;
5536            if (nesting == 0) {
5537                finishBatchEdit(ims);
5538            }
5539        }
5540    }
5541
5542    void ensureEndedBatchEdit() {
5543        final InputMethodState ims = getEditor().mInputMethodState;
5544        if (ims != null && ims.mBatchEditNesting != 0) {
5545            ims.mBatchEditNesting = 0;
5546            finishBatchEdit(ims);
5547        }
5548    }
5549
5550    void finishBatchEdit(final InputMethodState ims) {
5551        onEndBatchEdit();
5552
5553        if (ims.mContentChanged || ims.mSelectionModeChanged) {
5554            updateAfterEdit();
5555            reportExtractedText();
5556        } else if (ims.mCursorChanged) {
5557            // Cheezy way to get us to report the current cursor location.
5558            invalidateCursor();
5559        }
5560    }
5561
5562    void updateAfterEdit() {
5563        invalidate();
5564        int curs = getSelectionStart();
5565
5566        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5567            registerForPreDraw();
5568        }
5569
5570        if (curs >= 0) {
5571            mHighlightPathBogus = true;
5572            makeBlink();
5573            bringPointIntoView(curs);
5574        }
5575
5576        checkForResize();
5577    }
5578
5579    /**
5580     * Called by the framework in response to a request to begin a batch
5581     * of edit operations through a call to link {@link #beginBatchEdit()}.
5582     */
5583    public void onBeginBatchEdit() {
5584        // intentionally empty
5585    }
5586
5587    /**
5588     * Called by the framework in response to a request to end a batch
5589     * of edit operations through a call to link {@link #endBatchEdit}.
5590     */
5591    public void onEndBatchEdit() {
5592        // intentionally empty
5593    }
5594
5595    /**
5596     * Called by the framework in response to a private command from the
5597     * current method, provided by it calling
5598     * {@link InputConnection#performPrivateCommand
5599     * InputConnection.performPrivateCommand()}.
5600     *
5601     * @param action The action name of the command.
5602     * @param data Any additional data for the command.  This may be null.
5603     * @return Return true if you handled the command, else false.
5604     */
5605    public boolean onPrivateIMECommand(String action, Bundle data) {
5606        return false;
5607    }
5608
5609    private void nullLayouts() {
5610        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
5611            mSavedLayout = (BoringLayout) mLayout;
5612        }
5613        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
5614            mSavedHintLayout = (BoringLayout) mHintLayout;
5615        }
5616
5617        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
5618
5619        mBoring = mHintBoring = null;
5620
5621        // Since it depends on the value of mLayout
5622        prepareCursorControllers();
5623    }
5624
5625    /**
5626     * Make a new Layout based on the already-measured size of the view,
5627     * on the assumption that it was measured correctly at some point.
5628     */
5629    private void assumeLayout() {
5630        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5631
5632        if (width < 1) {
5633            width = 0;
5634        }
5635
5636        int physicalWidth = width;
5637
5638        if (mHorizontallyScrolling) {
5639            width = VERY_WIDE;
5640        }
5641
5642        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
5643                      physicalWidth, false);
5644    }
5645
5646    private Layout.Alignment getLayoutAlignment() {
5647        if (mLayoutAlignment == null) {
5648            switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
5649                case Gravity.START:
5650                    mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5651                    break;
5652                case Gravity.END:
5653                    mLayoutAlignment = Layout.Alignment.ALIGN_OPPOSITE;
5654                    break;
5655                case Gravity.LEFT:
5656                    mLayoutAlignment = Layout.Alignment.ALIGN_LEFT;
5657                    break;
5658                case Gravity.RIGHT:
5659                    mLayoutAlignment = Layout.Alignment.ALIGN_RIGHT;
5660                    break;
5661                case Gravity.CENTER_HORIZONTAL:
5662                    mLayoutAlignment = Layout.Alignment.ALIGN_CENTER;
5663                    break;
5664                default:
5665                    mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5666                    break;
5667            }
5668        }
5669        return mLayoutAlignment;
5670    }
5671
5672    /**
5673     * The width passed in is now the desired layout width,
5674     * not the full view width with padding.
5675     * {@hide}
5676     */
5677    protected void makeNewLayout(int wantWidth, int hintWidth,
5678                                 BoringLayout.Metrics boring,
5679                                 BoringLayout.Metrics hintBoring,
5680                                 int ellipsisWidth, boolean bringIntoView) {
5681        stopMarquee();
5682
5683        // Update "old" cached values
5684        mOldMaximum = mMaximum;
5685        mOldMaxMode = mMaxMode;
5686
5687        mHighlightPathBogus = true;
5688
5689        if (wantWidth < 0) {
5690            wantWidth = 0;
5691        }
5692        if (hintWidth < 0) {
5693            hintWidth = 0;
5694        }
5695
5696        Layout.Alignment alignment = getLayoutAlignment();
5697        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
5698        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
5699                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
5700        TruncateAt effectiveEllipsize = mEllipsize;
5701        if (mEllipsize == TruncateAt.MARQUEE &&
5702                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5703            effectiveEllipsize = TruncateAt.END_SMALL;
5704        }
5705
5706        if (mTextDir == null) {
5707            resolveTextDirection();
5708        }
5709
5710        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
5711                effectiveEllipsize, effectiveEllipsize == mEllipsize);
5712        if (switchEllipsize) {
5713            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
5714                    TruncateAt.END : TruncateAt.MARQUEE;
5715            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
5716                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
5717        }
5718
5719        shouldEllipsize = mEllipsize != null;
5720        mHintLayout = null;
5721
5722        if (mHint != null) {
5723            if (shouldEllipsize) hintWidth = wantWidth;
5724
5725            if (hintBoring == UNKNOWN_BORING) {
5726                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
5727                                                   mHintBoring);
5728                if (hintBoring != null) {
5729                    mHintBoring = hintBoring;
5730                }
5731            }
5732
5733            if (hintBoring != null) {
5734                if (hintBoring.width <= hintWidth &&
5735                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
5736                    if (mSavedHintLayout != null) {
5737                        mHintLayout = mSavedHintLayout.
5738                                replaceOrMake(mHint, mTextPaint,
5739                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5740                                hintBoring, mIncludePad);
5741                    } else {
5742                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5743                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5744                                hintBoring, mIncludePad);
5745                    }
5746
5747                    mSavedHintLayout = (BoringLayout) mHintLayout;
5748                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
5749                    if (mSavedHintLayout != null) {
5750                        mHintLayout = mSavedHintLayout.
5751                                replaceOrMake(mHint, mTextPaint,
5752                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5753                                hintBoring, mIncludePad, mEllipsize,
5754                                ellipsisWidth);
5755                    } else {
5756                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5757                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5758                                hintBoring, mIncludePad, mEllipsize,
5759                                ellipsisWidth);
5760                    }
5761                } else if (shouldEllipsize) {
5762                    mHintLayout = new StaticLayout(mHint,
5763                                0, mHint.length(),
5764                                mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5765                                mSpacingAdd, mIncludePad, mEllipsize,
5766                                ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5767                } else {
5768                    mHintLayout = new StaticLayout(mHint, mTextPaint,
5769                            hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5770                            mIncludePad);
5771                }
5772            } else if (shouldEllipsize) {
5773                mHintLayout = new StaticLayout(mHint,
5774                            0, mHint.length(),
5775                            mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5776                            mSpacingAdd, mIncludePad, mEllipsize,
5777                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5778            } else {
5779                mHintLayout = new StaticLayout(mHint, mTextPaint,
5780                        hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5781                        mIncludePad);
5782            }
5783        }
5784
5785        if (bringIntoView) {
5786            registerForPreDraw();
5787        }
5788
5789        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5790            if (!compressText(ellipsisWidth)) {
5791                final int height = mLayoutParams.height;
5792                // If the size of the view does not depend on the size of the text, try to
5793                // start the marquee immediately
5794                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
5795                    startMarquee();
5796                } else {
5797                    // Defer the start of the marquee until we know our width (see setFrame())
5798                    mRestartMarquee = true;
5799                }
5800            }
5801        }
5802
5803        // CursorControllers need a non-null mLayout
5804        prepareCursorControllers();
5805    }
5806
5807    private Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
5808            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
5809            boolean useSaved) {
5810        Layout result = null;
5811        if (mText instanceof Spannable) {
5812            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
5813                    alignment, mTextDir, mSpacingMult,
5814                    mSpacingAdd, mIncludePad, getKeyListener() == null ? effectiveEllipsize : null,
5815                            ellipsisWidth);
5816        } else {
5817            if (boring == UNKNOWN_BORING) {
5818                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
5819                if (boring != null) {
5820                    mBoring = boring;
5821                }
5822            }
5823
5824            if (boring != null) {
5825                if (boring.width <= wantWidth &&
5826                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
5827                    if (useSaved && mSavedLayout != null) {
5828                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
5829                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5830                                boring, mIncludePad);
5831                    } else {
5832                        result = BoringLayout.make(mTransformed, mTextPaint,
5833                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5834                                boring, mIncludePad);
5835                    }
5836
5837                    if (useSaved) {
5838                        mSavedLayout = (BoringLayout) result;
5839                    }
5840                } else if (shouldEllipsize && boring.width <= wantWidth) {
5841                    if (useSaved && mSavedLayout != null) {
5842                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
5843                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5844                                boring, mIncludePad, effectiveEllipsize,
5845                                ellipsisWidth);
5846                    } else {
5847                        result = BoringLayout.make(mTransformed, mTextPaint,
5848                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5849                                boring, mIncludePad, effectiveEllipsize,
5850                                ellipsisWidth);
5851                    }
5852                } else if (shouldEllipsize) {
5853                    result = new StaticLayout(mTransformed,
5854                            0, mTransformed.length(),
5855                            mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
5856                            mSpacingAdd, mIncludePad, effectiveEllipsize,
5857                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5858                } else {
5859                    result = new StaticLayout(mTransformed, mTextPaint,
5860                            wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5861                            mIncludePad);
5862                }
5863            } else if (shouldEllipsize) {
5864                result = new StaticLayout(mTransformed,
5865                        0, mTransformed.length(),
5866                        mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
5867                        mSpacingAdd, mIncludePad, effectiveEllipsize,
5868                        ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5869            } else {
5870                result = new StaticLayout(mTransformed, mTextPaint,
5871                        wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5872                        mIncludePad);
5873            }
5874        }
5875        return result;
5876    }
5877
5878    private boolean compressText(float width) {
5879        if (isHardwareAccelerated()) return false;
5880
5881        // Only compress the text if it hasn't been compressed by the previous pass
5882        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
5883                mTextPaint.getTextScaleX() == 1.0f) {
5884            final float textWidth = mLayout.getLineWidth(0);
5885            final float overflow = (textWidth + 1.0f - width) / width;
5886            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
5887                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
5888                post(new Runnable() {
5889                    public void run() {
5890                        requestLayout();
5891                    }
5892                });
5893                return true;
5894            }
5895        }
5896
5897        return false;
5898    }
5899
5900    private static int desired(Layout layout) {
5901        int n = layout.getLineCount();
5902        CharSequence text = layout.getText();
5903        float max = 0;
5904
5905        // if any line was wrapped, we can't use it.
5906        // but it's ok for the last line not to have a newline
5907
5908        for (int i = 0; i < n - 1; i++) {
5909            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
5910                return -1;
5911        }
5912
5913        for (int i = 0; i < n; i++) {
5914            max = Math.max(max, layout.getLineWidth(i));
5915        }
5916
5917        return (int) FloatMath.ceil(max);
5918    }
5919
5920    /**
5921     * Set whether the TextView includes extra top and bottom padding to make
5922     * room for accents that go above the normal ascent and descent.
5923     * The default is true.
5924     *
5925     * @attr ref android.R.styleable#TextView_includeFontPadding
5926     */
5927    public void setIncludeFontPadding(boolean includepad) {
5928        if (mIncludePad != includepad) {
5929            mIncludePad = includepad;
5930
5931            if (mLayout != null) {
5932                nullLayouts();
5933                requestLayout();
5934                invalidate();
5935            }
5936        }
5937    }
5938
5939    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
5940
5941    @Override
5942    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
5943        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
5944        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
5945        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
5946        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
5947
5948        int width;
5949        int height;
5950
5951        BoringLayout.Metrics boring = UNKNOWN_BORING;
5952        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
5953
5954        if (mTextDir == null) {
5955            resolveTextDirection();
5956        }
5957
5958        int des = -1;
5959        boolean fromexisting = false;
5960
5961        if (widthMode == MeasureSpec.EXACTLY) {
5962            // Parent has told us how big to be. So be it.
5963            width = widthSize;
5964        } else {
5965            if (mLayout != null && mEllipsize == null) {
5966                des = desired(mLayout);
5967            }
5968
5969            if (des < 0) {
5970                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
5971                if (boring != null) {
5972                    mBoring = boring;
5973                }
5974            } else {
5975                fromexisting = true;
5976            }
5977
5978            if (boring == null || boring == UNKNOWN_BORING) {
5979                if (des < 0) {
5980                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
5981                }
5982                width = des;
5983            } else {
5984                width = boring.width;
5985            }
5986
5987            final Drawables dr = mDrawables;
5988            if (dr != null) {
5989                width = Math.max(width, dr.mDrawableWidthTop);
5990                width = Math.max(width, dr.mDrawableWidthBottom);
5991            }
5992
5993            if (mHint != null) {
5994                int hintDes = -1;
5995                int hintWidth;
5996
5997                if (mHintLayout != null && mEllipsize == null) {
5998                    hintDes = desired(mHintLayout);
5999                }
6000
6001                if (hintDes < 0) {
6002                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
6003                    if (hintBoring != null) {
6004                        mHintBoring = hintBoring;
6005                    }
6006                }
6007
6008                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
6009                    if (hintDes < 0) {
6010                        hintDes = (int) FloatMath.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
6011                    }
6012                    hintWidth = hintDes;
6013                } else {
6014                    hintWidth = hintBoring.width;
6015                }
6016
6017                if (hintWidth > width) {
6018                    width = hintWidth;
6019                }
6020            }
6021
6022            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
6023
6024            if (mMaxWidthMode == EMS) {
6025                width = Math.min(width, mMaxWidth * getLineHeight());
6026            } else {
6027                width = Math.min(width, mMaxWidth);
6028            }
6029
6030            if (mMinWidthMode == EMS) {
6031                width = Math.max(width, mMinWidth * getLineHeight());
6032            } else {
6033                width = Math.max(width, mMinWidth);
6034            }
6035
6036            // Check against our minimum width
6037            width = Math.max(width, getSuggestedMinimumWidth());
6038
6039            if (widthMode == MeasureSpec.AT_MOST) {
6040                width = Math.min(widthSize, width);
6041            }
6042        }
6043
6044        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
6045        int unpaddedWidth = want;
6046
6047        if (mHorizontallyScrolling) want = VERY_WIDE;
6048
6049        int hintWant = want;
6050        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
6051
6052        if (mLayout == null) {
6053            makeNewLayout(want, hintWant, boring, hintBoring,
6054                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6055        } else {
6056            final boolean layoutChanged = (mLayout.getWidth() != want) ||
6057                    (hintWidth != hintWant) ||
6058                    (mLayout.getEllipsizedWidth() !=
6059                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
6060
6061            final boolean widthChanged = (mHint == null) &&
6062                    (mEllipsize == null) &&
6063                    (want > mLayout.getWidth()) &&
6064                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
6065
6066            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
6067
6068            if (layoutChanged || maximumChanged) {
6069                if (!maximumChanged && widthChanged) {
6070                    mLayout.increaseWidthTo(want);
6071                } else {
6072                    makeNewLayout(want, hintWant, boring, hintBoring,
6073                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6074                }
6075            } else {
6076                // Nothing has changed
6077            }
6078        }
6079
6080        if (heightMode == MeasureSpec.EXACTLY) {
6081            // Parent has told us how big to be. So be it.
6082            height = heightSize;
6083            mDesiredHeightAtMeasure = -1;
6084        } else {
6085            int desired = getDesiredHeight();
6086
6087            height = desired;
6088            mDesiredHeightAtMeasure = desired;
6089
6090            if (heightMode == MeasureSpec.AT_MOST) {
6091                height = Math.min(desired, heightSize);
6092            }
6093        }
6094
6095        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
6096        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
6097            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
6098        }
6099
6100        /*
6101         * We didn't let makeNewLayout() register to bring the cursor into view,
6102         * so do it here if there is any possibility that it is needed.
6103         */
6104        if (mMovement != null ||
6105            mLayout.getWidth() > unpaddedWidth ||
6106            mLayout.getHeight() > unpaddedHeight) {
6107            registerForPreDraw();
6108        } else {
6109            scrollTo(0, 0);
6110        }
6111
6112        setMeasuredDimension(width, height);
6113    }
6114
6115    private int getDesiredHeight() {
6116        return Math.max(
6117                getDesiredHeight(mLayout, true),
6118                getDesiredHeight(mHintLayout, mEllipsize != null));
6119    }
6120
6121    private int getDesiredHeight(Layout layout, boolean cap) {
6122        if (layout == null) {
6123            return 0;
6124        }
6125
6126        int linecount = layout.getLineCount();
6127        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
6128        int desired = layout.getLineTop(linecount);
6129
6130        final Drawables dr = mDrawables;
6131        if (dr != null) {
6132            desired = Math.max(desired, dr.mDrawableHeightLeft);
6133            desired = Math.max(desired, dr.mDrawableHeightRight);
6134        }
6135
6136        desired += pad;
6137
6138        if (mMaxMode == LINES) {
6139            /*
6140             * Don't cap the hint to a certain number of lines.
6141             * (Do cap it, though, if we have a maximum pixel height.)
6142             */
6143            if (cap) {
6144                if (linecount > mMaximum) {
6145                    desired = layout.getLineTop(mMaximum);
6146
6147                    if (dr != null) {
6148                        desired = Math.max(desired, dr.mDrawableHeightLeft);
6149                        desired = Math.max(desired, dr.mDrawableHeightRight);
6150                    }
6151
6152                    desired += pad;
6153                    linecount = mMaximum;
6154                }
6155            }
6156        } else {
6157            desired = Math.min(desired, mMaximum);
6158        }
6159
6160        if (mMinMode == LINES) {
6161            if (linecount < mMinimum) {
6162                desired += getLineHeight() * (mMinimum - linecount);
6163            }
6164        } else {
6165            desired = Math.max(desired, mMinimum);
6166        }
6167
6168        // Check against our minimum height
6169        desired = Math.max(desired, getSuggestedMinimumHeight());
6170
6171        return desired;
6172    }
6173
6174    /**
6175     * Check whether a change to the existing text layout requires a
6176     * new view layout.
6177     */
6178    private void checkForResize() {
6179        boolean sizeChanged = false;
6180
6181        if (mLayout != null) {
6182            // Check if our width changed
6183            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
6184                sizeChanged = true;
6185                invalidate();
6186            }
6187
6188            // Check if our height changed
6189            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
6190                int desiredHeight = getDesiredHeight();
6191
6192                if (desiredHeight != this.getHeight()) {
6193                    sizeChanged = true;
6194                }
6195            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
6196                if (mDesiredHeightAtMeasure >= 0) {
6197                    int desiredHeight = getDesiredHeight();
6198
6199                    if (desiredHeight != mDesiredHeightAtMeasure) {
6200                        sizeChanged = true;
6201                    }
6202                }
6203            }
6204        }
6205
6206        if (sizeChanged) {
6207            requestLayout();
6208            // caller will have already invalidated
6209        }
6210    }
6211
6212    /**
6213     * Check whether entirely new text requires a new view layout
6214     * or merely a new text layout.
6215     */
6216    private void checkForRelayout() {
6217        // If we have a fixed width, we can just swap in a new text layout
6218        // if the text height stays the same or if the view height is fixed.
6219
6220        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
6221                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
6222                (mHint == null || mHintLayout != null) &&
6223                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
6224            // Static width, so try making a new text layout.
6225
6226            int oldht = mLayout.getHeight();
6227            int want = mLayout.getWidth();
6228            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
6229
6230            /*
6231             * No need to bring the text into view, since the size is not
6232             * changing (unless we do the requestLayout(), in which case it
6233             * will happen at measure).
6234             */
6235            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
6236                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
6237                          false);
6238
6239            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
6240                // In a fixed-height view, so use our new text layout.
6241                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
6242                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
6243                    invalidate();
6244                    return;
6245                }
6246
6247                // Dynamic height, but height has stayed the same,
6248                // so use our new text layout.
6249                if (mLayout.getHeight() == oldht &&
6250                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
6251                    invalidate();
6252                    return;
6253                }
6254            }
6255
6256            // We lose: the height has changed and we have a dynamic height.
6257            // Request a new view layout using our new text layout.
6258            requestLayout();
6259            invalidate();
6260        } else {
6261            // Dynamic width, so we have no choice but to request a new
6262            // view layout with a new text layout.
6263            nullLayouts();
6264            requestLayout();
6265            invalidate();
6266        }
6267    }
6268
6269    @Override
6270    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
6271        super.onLayout(changed, left, top, right, bottom);
6272        if (changed && mEditor != null) getEditor().mTextDisplayListIsValid = false;
6273    }
6274
6275    private boolean isShowingHint() {
6276        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
6277    }
6278
6279    /**
6280     * Returns true if anything changed.
6281     */
6282    private boolean bringTextIntoView() {
6283        Layout layout = isShowingHint() ? mHintLayout : mLayout;
6284        int line = 0;
6285        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6286            line = layout.getLineCount() - 1;
6287        }
6288
6289        Layout.Alignment a = layout.getParagraphAlignment(line);
6290        int dir = layout.getParagraphDirection(line);
6291        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6292        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6293        int ht = layout.getHeight();
6294
6295        int scrollx, scrolly;
6296
6297        // Convert to left, center, or right alignment.
6298        if (a == Layout.Alignment.ALIGN_NORMAL) {
6299            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
6300                Layout.Alignment.ALIGN_RIGHT;
6301        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
6302            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
6303                Layout.Alignment.ALIGN_LEFT;
6304        }
6305
6306        if (a == Layout.Alignment.ALIGN_CENTER) {
6307            /*
6308             * Keep centered if possible, or, if it is too wide to fit,
6309             * keep leading edge in view.
6310             */
6311
6312            int left = (int) FloatMath.floor(layout.getLineLeft(line));
6313            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6314
6315            if (right - left < hspace) {
6316                scrollx = (right + left) / 2 - hspace / 2;
6317            } else {
6318                if (dir < 0) {
6319                    scrollx = right - hspace;
6320                } else {
6321                    scrollx = left;
6322                }
6323            }
6324        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
6325            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6326            scrollx = right - hspace;
6327        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
6328            scrollx = (int) FloatMath.floor(layout.getLineLeft(line));
6329        }
6330
6331        if (ht < vspace) {
6332            scrolly = 0;
6333        } else {
6334            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6335                scrolly = ht - vspace;
6336            } else {
6337                scrolly = 0;
6338            }
6339        }
6340
6341        if (scrollx != mScrollX || scrolly != mScrollY) {
6342            scrollTo(scrollx, scrolly);
6343            return true;
6344        } else {
6345            return false;
6346        }
6347    }
6348
6349    /**
6350     * Move the point, specified by the offset, into the view if it is needed.
6351     * This has to be called after layout. Returns true if anything changed.
6352     */
6353    public boolean bringPointIntoView(int offset) {
6354        boolean changed = false;
6355
6356        Layout layout = isShowingHint() ? mHintLayout: mLayout;
6357
6358        if (layout == null) return changed;
6359
6360        int line = layout.getLineForOffset(offset);
6361
6362        // FIXME: Is it okay to truncate this, or should we round?
6363        final int x = (int)layout.getPrimaryHorizontal(offset);
6364        final int top = layout.getLineTop(line);
6365        final int bottom = layout.getLineTop(line + 1);
6366
6367        int left = (int) FloatMath.floor(layout.getLineLeft(line));
6368        int right = (int) FloatMath.ceil(layout.getLineRight(line));
6369        int ht = layout.getHeight();
6370
6371        int grav;
6372
6373        switch (layout.getParagraphAlignment(line)) {
6374            case ALIGN_LEFT:
6375                grav = 1;
6376                break;
6377            case ALIGN_RIGHT:
6378                grav = -1;
6379                break;
6380            case ALIGN_NORMAL:
6381                grav = layout.getParagraphDirection(line);
6382                break;
6383            case ALIGN_OPPOSITE:
6384                grav = -layout.getParagraphDirection(line);
6385                break;
6386            case ALIGN_CENTER:
6387            default:
6388                grav = 0;
6389                break;
6390        }
6391
6392        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6393        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6394
6395        int hslack = (bottom - top) / 2;
6396        int vslack = hslack;
6397
6398        if (vslack > vspace / 4)
6399            vslack = vspace / 4;
6400        if (hslack > hspace / 4)
6401            hslack = hspace / 4;
6402
6403        int hs = mScrollX;
6404        int vs = mScrollY;
6405
6406        if (top - vs < vslack)
6407            vs = top - vslack;
6408        if (bottom - vs > vspace - vslack)
6409            vs = bottom - (vspace - vslack);
6410        if (ht - vs < vspace)
6411            vs = ht - vspace;
6412        if (0 - vs > 0)
6413            vs = 0;
6414
6415        if (grav != 0) {
6416            if (x - hs < hslack) {
6417                hs = x - hslack;
6418            }
6419            if (x - hs > hspace - hslack) {
6420                hs = x - (hspace - hslack);
6421            }
6422        }
6423
6424        if (grav < 0) {
6425            if (left - hs > 0)
6426                hs = left;
6427            if (right - hs < hspace)
6428                hs = right - hspace;
6429        } else if (grav > 0) {
6430            if (right - hs < hspace)
6431                hs = right - hspace;
6432            if (left - hs > 0)
6433                hs = left;
6434        } else /* grav == 0 */ {
6435            if (right - left <= hspace) {
6436                /*
6437                 * If the entire text fits, center it exactly.
6438                 */
6439                hs = left - (hspace - (right - left)) / 2;
6440            } else if (x > right - hslack) {
6441                /*
6442                 * If we are near the right edge, keep the right edge
6443                 * at the edge of the view.
6444                 */
6445                hs = right - hspace;
6446            } else if (x < left + hslack) {
6447                /*
6448                 * If we are near the left edge, keep the left edge
6449                 * at the edge of the view.
6450                 */
6451                hs = left;
6452            } else if (left > hs) {
6453                /*
6454                 * Is there whitespace visible at the left?  Fix it if so.
6455                 */
6456                hs = left;
6457            } else if (right < hs + hspace) {
6458                /*
6459                 * Is there whitespace visible at the right?  Fix it if so.
6460                 */
6461                hs = right - hspace;
6462            } else {
6463                /*
6464                 * Otherwise, float as needed.
6465                 */
6466                if (x - hs < hslack) {
6467                    hs = x - hslack;
6468                }
6469                if (x - hs > hspace - hslack) {
6470                    hs = x - (hspace - hslack);
6471                }
6472            }
6473        }
6474
6475        if (hs != mScrollX || vs != mScrollY) {
6476            if (mScroller == null) {
6477                scrollTo(hs, vs);
6478            } else {
6479                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
6480                int dx = hs - mScrollX;
6481                int dy = vs - mScrollY;
6482
6483                if (duration > ANIMATED_SCROLL_GAP) {
6484                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
6485                    awakenScrollBars(mScroller.getDuration());
6486                    invalidate();
6487                } else {
6488                    if (!mScroller.isFinished()) {
6489                        mScroller.abortAnimation();
6490                    }
6491
6492                    scrollBy(dx, dy);
6493                }
6494
6495                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
6496            }
6497
6498            changed = true;
6499        }
6500
6501        if (isFocused()) {
6502            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
6503            // requestRectangleOnScreen() is in terms of content coordinates.
6504
6505            // The offsets here are to ensure the rectangle we are using is
6506            // within our view bounds, in case the cursor is on the far left
6507            // or right.  If it isn't withing the bounds, then this request
6508            // will be ignored.
6509            if (mTempRect == null) mTempRect = new Rect();
6510            mTempRect.set(x - 2, top, x + 2, bottom);
6511            getInterestingRect(mTempRect, line);
6512            mTempRect.offset(mScrollX, mScrollY);
6513
6514            if (requestRectangleOnScreen(mTempRect)) {
6515                changed = true;
6516            }
6517        }
6518
6519        return changed;
6520    }
6521
6522    /**
6523     * Move the cursor, if needed, so that it is at an offset that is visible
6524     * to the user.  This will not move the cursor if it represents more than
6525     * one character (a selection range).  This will only work if the
6526     * TextView contains spannable text; otherwise it will do nothing.
6527     *
6528     * @return True if the cursor was actually moved, false otherwise.
6529     */
6530    public boolean moveCursorToVisibleOffset() {
6531        if (!(mText instanceof Spannable)) {
6532            return false;
6533        }
6534        int start = getSelectionStart();
6535        int end = getSelectionEnd();
6536        if (start != end) {
6537            return false;
6538        }
6539
6540        // First: make sure the line is visible on screen:
6541
6542        int line = mLayout.getLineForOffset(start);
6543
6544        final int top = mLayout.getLineTop(line);
6545        final int bottom = mLayout.getLineTop(line + 1);
6546        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6547        int vslack = (bottom - top) / 2;
6548        if (vslack > vspace / 4)
6549            vslack = vspace / 4;
6550        final int vs = mScrollY;
6551
6552        if (top < (vs+vslack)) {
6553            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
6554        } else if (bottom > (vspace+vs-vslack)) {
6555            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
6556        }
6557
6558        // Next: make sure the character is visible on screen:
6559
6560        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6561        final int hs = mScrollX;
6562        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
6563        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
6564
6565        // line might contain bidirectional text
6566        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
6567        final int highChar = leftChar > rightChar ? leftChar : rightChar;
6568
6569        int newStart = start;
6570        if (newStart < lowChar) {
6571            newStart = lowChar;
6572        } else if (newStart > highChar) {
6573            newStart = highChar;
6574        }
6575
6576        if (newStart != start) {
6577            Selection.setSelection((Spannable)mText, newStart);
6578            return true;
6579        }
6580
6581        return false;
6582    }
6583
6584    @Override
6585    public void computeScroll() {
6586        if (mScroller != null) {
6587            if (mScroller.computeScrollOffset()) {
6588                mScrollX = mScroller.getCurrX();
6589                mScrollY = mScroller.getCurrY();
6590                invalidateParentCaches();
6591                postInvalidate();  // So we draw again
6592            }
6593        }
6594    }
6595
6596    private void getInterestingRect(Rect r, int line) {
6597        convertFromViewportToContentCoordinates(r);
6598
6599        // Rectangle can can be expanded on first and last line to take
6600        // padding into account.
6601        // TODO Take left/right padding into account too?
6602        if (line == 0) r.top -= getExtendedPaddingTop();
6603        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
6604    }
6605
6606    private void convertFromViewportToContentCoordinates(Rect r) {
6607        final int horizontalOffset = viewportToContentHorizontalOffset();
6608        r.left += horizontalOffset;
6609        r.right += horizontalOffset;
6610
6611        final int verticalOffset = viewportToContentVerticalOffset();
6612        r.top += verticalOffset;
6613        r.bottom += verticalOffset;
6614    }
6615
6616    private int viewportToContentHorizontalOffset() {
6617        return getCompoundPaddingLeft() - mScrollX;
6618    }
6619
6620    private int viewportToContentVerticalOffset() {
6621        int offset = getExtendedPaddingTop() - mScrollY;
6622        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6623            offset += getVerticalOffset(false);
6624        }
6625        return offset;
6626    }
6627
6628    @Override
6629    public void debug(int depth) {
6630        super.debug(depth);
6631
6632        String output = debugIndent(depth);
6633        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
6634                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
6635                + "} ";
6636
6637        if (mText != null) {
6638
6639            output += "mText=\"" + mText + "\" ";
6640            if (mLayout != null) {
6641                output += "mLayout width=" + mLayout.getWidth()
6642                        + " height=" + mLayout.getHeight();
6643            }
6644        } else {
6645            output += "mText=NULL";
6646        }
6647        Log.d(VIEW_LOG_TAG, output);
6648    }
6649
6650    /**
6651     * Convenience for {@link Selection#getSelectionStart}.
6652     */
6653    @ViewDebug.ExportedProperty(category = "text")
6654    public int getSelectionStart() {
6655        return Selection.getSelectionStart(getText());
6656    }
6657
6658    /**
6659     * Convenience for {@link Selection#getSelectionEnd}.
6660     */
6661    @ViewDebug.ExportedProperty(category = "text")
6662    public int getSelectionEnd() {
6663        return Selection.getSelectionEnd(getText());
6664    }
6665
6666    /**
6667     * Return true iff there is a selection inside this text view.
6668     */
6669    public boolean hasSelection() {
6670        final int selectionStart = getSelectionStart();
6671        final int selectionEnd = getSelectionEnd();
6672
6673        return selectionStart >= 0 && selectionStart != selectionEnd;
6674    }
6675
6676    /**
6677     * Sets the properties of this field (lines, horizontally scrolling,
6678     * transformation method) to be for a single-line input.
6679     *
6680     * @attr ref android.R.styleable#TextView_singleLine
6681     */
6682    public void setSingleLine() {
6683        setSingleLine(true);
6684    }
6685
6686    /**
6687     * Sets the properties of this field to transform input to ALL CAPS
6688     * display. This may use a "small caps" formatting if available.
6689     * This setting will be ignored if this field is editable or selectable.
6690     *
6691     * This call replaces the current transformation method. Disabling this
6692     * will not necessarily restore the previous behavior from before this
6693     * was enabled.
6694     *
6695     * @see #setTransformationMethod(TransformationMethod)
6696     * @attr ref android.R.styleable#TextView_textAllCaps
6697     */
6698    public void setAllCaps(boolean allCaps) {
6699        if (allCaps) {
6700            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
6701        } else {
6702            setTransformationMethod(null);
6703        }
6704    }
6705
6706    /**
6707     * If true, sets the properties of this field (number of lines, horizontally scrolling,
6708     * transformation method) to be for a single-line input; if false, restores these to the default
6709     * conditions.
6710     *
6711     * Note that the default conditions are not necessarily those that were in effect prior this
6712     * method, and you may want to reset these properties to your custom values.
6713     *
6714     * @attr ref android.R.styleable#TextView_singleLine
6715     */
6716    @android.view.RemotableViewMethod
6717    public void setSingleLine(boolean singleLine) {
6718        // Could be used, but may break backward compatibility.
6719        // if (mSingleLine == singleLine) return;
6720        setInputTypeSingleLine(singleLine);
6721        applySingleLine(singleLine, true, true);
6722    }
6723
6724    /**
6725     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
6726     * @param singleLine
6727     */
6728    private void setInputTypeSingleLine(boolean singleLine) {
6729        if (mEditor != null && (getEditor().mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6730            if (singleLine) {
6731                getEditor().mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6732            } else {
6733                getEditor().mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6734            }
6735        }
6736    }
6737
6738    private void applySingleLine(boolean singleLine, boolean applyTransformation,
6739            boolean changeMaxLines) {
6740        mSingleLine = singleLine;
6741        if (singleLine) {
6742            setLines(1);
6743            setHorizontallyScrolling(true);
6744            if (applyTransformation) {
6745                setTransformationMethod(SingleLineTransformationMethod.getInstance());
6746            }
6747        } else {
6748            if (changeMaxLines) {
6749                setMaxLines(Integer.MAX_VALUE);
6750            }
6751            setHorizontallyScrolling(false);
6752            if (applyTransformation) {
6753                setTransformationMethod(null);
6754            }
6755        }
6756    }
6757
6758    /**
6759     * Causes words in the text that are longer than the view is wide
6760     * to be ellipsized instead of broken in the middle.  You may also
6761     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
6762     * to constrain the text to a single line.  Use <code>null</code>
6763     * to turn off ellipsizing.
6764     *
6765     * If {@link #setMaxLines} has been used to set two or more lines,
6766     * {@link android.text.TextUtils.TruncateAt#END} and
6767     * {@link android.text.TextUtils.TruncateAt#MARQUEE}* are only supported
6768     * (other ellipsizing types will not do anything).
6769     *
6770     * @attr ref android.R.styleable#TextView_ellipsize
6771     */
6772    public void setEllipsize(TextUtils.TruncateAt where) {
6773        // TruncateAt is an enum. != comparison is ok between these singleton objects.
6774        if (mEllipsize != where) {
6775            mEllipsize = where;
6776
6777            if (mLayout != null) {
6778                nullLayouts();
6779                requestLayout();
6780                invalidate();
6781            }
6782        }
6783    }
6784
6785    /**
6786     * Sets how many times to repeat the marquee animation. Only applied if the
6787     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
6788     *
6789     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
6790     */
6791    public void setMarqueeRepeatLimit(int marqueeLimit) {
6792        mMarqueeRepeatLimit = marqueeLimit;
6793    }
6794
6795    /**
6796     * Returns where, if anywhere, words that are longer than the view
6797     * is wide should be ellipsized.
6798     */
6799    @ViewDebug.ExportedProperty
6800    public TextUtils.TruncateAt getEllipsize() {
6801        return mEllipsize;
6802    }
6803
6804    /**
6805     * Set the TextView so that when it takes focus, all the text is
6806     * selected.
6807     *
6808     * @attr ref android.R.styleable#TextView_selectAllOnFocus
6809     */
6810    @android.view.RemotableViewMethod
6811    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
6812        createEditorIfNeeded("setSelectAllOnFocus");
6813        getEditor().mSelectAllOnFocus = selectAllOnFocus;
6814
6815        if (selectAllOnFocus && !(mText instanceof Spannable)) {
6816            setText(mText, BufferType.SPANNABLE);
6817        }
6818    }
6819
6820    /**
6821     * Set whether the cursor is visible.  The default is true.
6822     *
6823     * @attr ref android.R.styleable#TextView_cursorVisible
6824     */
6825    @android.view.RemotableViewMethod
6826    public void setCursorVisible(boolean visible) {
6827        if (visible && mEditor == null) return; // visible is the default value with no edit data
6828        createEditorIfNeeded("setCursorVisible");
6829        if (getEditor().mCursorVisible != visible) {
6830            getEditor().mCursorVisible = visible;
6831            invalidate();
6832
6833            makeBlink();
6834
6835            // InsertionPointCursorController depends on mCursorVisible
6836            prepareCursorControllers();
6837        }
6838    }
6839
6840    private boolean isCursorVisible() {
6841        // The default value is true, even when there is no associated Editor
6842        return mEditor == null ? true : (getEditor().mCursorVisible && isTextEditable());
6843    }
6844
6845    private boolean canMarquee() {
6846        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
6847        return width > 0 && (mLayout.getLineWidth(0) > width ||
6848                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
6849                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
6850    }
6851
6852    private void startMarquee() {
6853        // Do not ellipsize EditText
6854        if (getKeyListener() != null) return;
6855
6856        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
6857            return;
6858        }
6859
6860        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
6861                getLineCount() == 1 && canMarquee()) {
6862
6863            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6864                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
6865                final Layout tmp = mLayout;
6866                mLayout = mSavedMarqueeModeLayout;
6867                mSavedMarqueeModeLayout = tmp;
6868                setHorizontalFadingEdgeEnabled(true);
6869                requestLayout();
6870                invalidate();
6871            }
6872
6873            if (mMarquee == null) mMarquee = new Marquee(this);
6874            mMarquee.start(mMarqueeRepeatLimit);
6875        }
6876    }
6877
6878    private void stopMarquee() {
6879        if (mMarquee != null && !mMarquee.isStopped()) {
6880            mMarquee.stop();
6881        }
6882
6883        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
6884            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
6885            final Layout tmp = mSavedMarqueeModeLayout;
6886            mSavedMarqueeModeLayout = mLayout;
6887            mLayout = tmp;
6888            setHorizontalFadingEdgeEnabled(false);
6889            requestLayout();
6890            invalidate();
6891        }
6892    }
6893
6894    private void startStopMarquee(boolean start) {
6895        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6896            if (start) {
6897                startMarquee();
6898            } else {
6899                stopMarquee();
6900            }
6901        }
6902    }
6903
6904    /**
6905     * This method is called when the text is changed, in case any subclasses
6906     * would like to know.
6907     *
6908     * Within <code>text</code>, the <code>lengthAfter</code> characters
6909     * beginning at <code>start</code> have just replaced old text that had
6910     * length <code>lengthBefore</code>. It is an error to attempt to make
6911     * changes to <code>text</code> from this callback.
6912     *
6913     * @param text The text the TextView is displaying
6914     * @param start The offset of the start of the range of the text that was
6915     * modified
6916     * @param lengthBefore The length of the former text that has been replaced
6917     * @param lengthAfter The length of the replacement modified text
6918     */
6919    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
6920        // intentionally empty, template pattern method can be overridden by subclasses
6921    }
6922
6923    /**
6924     * This method is called when the selection has changed, in case any
6925     * subclasses would like to know.
6926     *
6927     * @param selStart The new selection start location.
6928     * @param selEnd The new selection end location.
6929     */
6930    protected void onSelectionChanged(int selStart, int selEnd) {
6931        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
6932    }
6933
6934    /**
6935     * Adds a TextWatcher to the list of those whose methods are called
6936     * whenever this TextView's text changes.
6937     * <p>
6938     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
6939     * not called after {@link #setText} calls.  Now, doing {@link #setText}
6940     * if there are any text changed listeners forces the buffer type to
6941     * Editable if it would not otherwise be and does call this method.
6942     */
6943    public void addTextChangedListener(TextWatcher watcher) {
6944        if (mListeners == null) {
6945            mListeners = new ArrayList<TextWatcher>();
6946        }
6947
6948        mListeners.add(watcher);
6949    }
6950
6951    /**
6952     * Removes the specified TextWatcher from the list of those whose
6953     * methods are called
6954     * whenever this TextView's text changes.
6955     */
6956    public void removeTextChangedListener(TextWatcher watcher) {
6957        if (mListeners != null) {
6958            int i = mListeners.indexOf(watcher);
6959
6960            if (i >= 0) {
6961                mListeners.remove(i);
6962            }
6963        }
6964    }
6965
6966    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
6967        if (mListeners != null) {
6968            final ArrayList<TextWatcher> list = mListeners;
6969            final int count = list.size();
6970            for (int i = 0; i < count; i++) {
6971                list.get(i).beforeTextChanged(text, start, before, after);
6972            }
6973        }
6974
6975        // The spans that are inside or intersect the modified region no longer make sense
6976        removeIntersectingSpans(start, start + before, SpellCheckSpan.class);
6977        removeIntersectingSpans(start, start + before, SuggestionSpan.class);
6978    }
6979
6980    // Removes all spans that are inside or actually overlap the start..end range
6981    private <T> void removeIntersectingSpans(int start, int end, Class<T> type) {
6982        if (!(mText instanceof Editable)) return;
6983        Editable text = (Editable) mText;
6984
6985        T[] spans = text.getSpans(start, end, type);
6986        final int length = spans.length;
6987        for (int i = 0; i < length; i++) {
6988            final int s = text.getSpanStart(spans[i]);
6989            final int e = text.getSpanEnd(spans[i]);
6990            // Spans that are adjacent to the edited region will be handled in
6991            // updateSpellCheckSpans. Result depends on what will be added (space or text)
6992            if (e == start || s == end) break;
6993            text.removeSpan(spans[i]);
6994        }
6995    }
6996
6997    /**
6998     * Not private so it can be called from an inner class without going
6999     * through a thunk.
7000     */
7001    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
7002        if (mListeners != null) {
7003            final ArrayList<TextWatcher> list = mListeners;
7004            final int count = list.size();
7005            for (int i = 0; i < count; i++) {
7006                list.get(i).onTextChanged(text, start, before, after);
7007            }
7008        }
7009
7010        if (mEditor != null) getEditor().sendOnTextChanged(start, after);
7011    }
7012
7013    /**
7014     * Not private so it can be called from an inner class without going
7015     * through a thunk.
7016     */
7017    void sendAfterTextChanged(Editable text) {
7018        if (mListeners != null) {
7019            final ArrayList<TextWatcher> list = mListeners;
7020            final int count = list.size();
7021            for (int i = 0; i < count; i++) {
7022                list.get(i).afterTextChanged(text);
7023            }
7024        }
7025    }
7026
7027    /**
7028     * Not private so it can be called from an inner class without going
7029     * through a thunk.
7030     */
7031    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
7032        final InputMethodState ims = mEditor == null ? null : getEditor().mInputMethodState;
7033        if (ims == null || ims.mBatchEditNesting == 0) {
7034            updateAfterEdit();
7035        }
7036        if (ims != null) {
7037            ims.mContentChanged = true;
7038            if (ims.mChangedStart < 0) {
7039                ims.mChangedStart = start;
7040                ims.mChangedEnd = start+before;
7041            } else {
7042                ims.mChangedStart = Math.min(ims.mChangedStart, start);
7043                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
7044            }
7045            ims.mChangedDelta += after-before;
7046        }
7047
7048        sendOnTextChanged(buffer, start, before, after);
7049        onTextChanged(buffer, start, before, after);
7050    }
7051
7052    /**
7053     * Not private so it can be called from an inner class without going
7054     * through a thunk.
7055     */
7056    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
7057        // XXX Make the start and end move together if this ends up
7058        // spending too much time invalidating.
7059
7060        boolean selChanged = false;
7061        int newSelStart=-1, newSelEnd=-1;
7062
7063        final InputMethodState ims = mEditor == null ? null : getEditor().mInputMethodState;
7064
7065        if (what == Selection.SELECTION_END) {
7066            selChanged = true;
7067            newSelEnd = newStart;
7068
7069            if (oldStart >= 0 || newStart >= 0) {
7070                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
7071                registerForPreDraw();
7072                makeBlink();
7073            }
7074        }
7075
7076        if (what == Selection.SELECTION_START) {
7077            selChanged = true;
7078            newSelStart = newStart;
7079
7080            if (oldStart >= 0 || newStart >= 0) {
7081                int end = Selection.getSelectionEnd(buf);
7082                invalidateCursor(end, oldStart, newStart);
7083            }
7084        }
7085
7086        if (selChanged) {
7087            mHighlightPathBogus = true;
7088            if (mEditor != null && !isFocused()) getEditor().mSelectionMoved = true;
7089
7090            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
7091                if (newSelStart < 0) {
7092                    newSelStart = Selection.getSelectionStart(buf);
7093                }
7094                if (newSelEnd < 0) {
7095                    newSelEnd = Selection.getSelectionEnd(buf);
7096                }
7097                onSelectionChanged(newSelStart, newSelEnd);
7098            }
7099        }
7100
7101        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
7102                what instanceof CharacterStyle) {
7103            if (ims == null || ims.mBatchEditNesting == 0) {
7104                invalidate();
7105                mHighlightPathBogus = true;
7106                checkForResize();
7107            } else {
7108                ims.mContentChanged = true;
7109            }
7110            if (mEditor != null) getEditor().mTextDisplayListIsValid = false;
7111        }
7112
7113        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
7114            mHighlightPathBogus = true;
7115            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
7116                ims.mSelectionModeChanged = true;
7117            }
7118
7119            if (Selection.getSelectionStart(buf) >= 0) {
7120                if (ims == null || ims.mBatchEditNesting == 0) {
7121                    invalidateCursor();
7122                } else {
7123                    ims.mCursorChanged = true;
7124                }
7125            }
7126        }
7127
7128        if (what instanceof ParcelableSpan) {
7129            // If this is a span that can be sent to a remote process,
7130            // the current extract editor would be interested in it.
7131            if (ims != null && ims.mExtracting != null) {
7132                if (ims.mBatchEditNesting != 0) {
7133                    if (oldStart >= 0) {
7134                        if (ims.mChangedStart > oldStart) {
7135                            ims.mChangedStart = oldStart;
7136                        }
7137                        if (ims.mChangedStart > oldEnd) {
7138                            ims.mChangedStart = oldEnd;
7139                        }
7140                    }
7141                    if (newStart >= 0) {
7142                        if (ims.mChangedStart > newStart) {
7143                            ims.mChangedStart = newStart;
7144                        }
7145                        if (ims.mChangedStart > newEnd) {
7146                            ims.mChangedStart = newEnd;
7147                        }
7148                    }
7149                } else {
7150                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
7151                            + oldStart + "-" + oldEnd + ","
7152                            + newStart + "-" + newEnd + what);
7153                    ims.mContentChanged = true;
7154                }
7155            }
7156        }
7157
7158        if (mEditor != null && getEditor().mSpellChecker != null && newStart < 0 && what instanceof SpellCheckSpan) {
7159            getEditor().mSpellChecker.removeSpellCheckSpan((SpellCheckSpan) what);
7160        }
7161    }
7162
7163    /**
7164     * Create new SpellCheckSpans on the modified region.
7165     */
7166    private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) {
7167        if (isTextEditable() && isSuggestionsEnabled() && !(this instanceof ExtractEditText)) {
7168            if (getEditor().mSpellChecker == null && createSpellChecker) {
7169                getEditor().mSpellChecker = new SpellChecker(this);
7170            }
7171            if (getEditor().mSpellChecker != null) {
7172                getEditor().mSpellChecker.spellCheck(start, end);
7173            }
7174        }
7175    }
7176
7177    /**
7178     * @hide
7179     */
7180    @Override
7181    public void dispatchFinishTemporaryDetach() {
7182        mDispatchTemporaryDetach = true;
7183        super.dispatchFinishTemporaryDetach();
7184        mDispatchTemporaryDetach = false;
7185    }
7186
7187    @Override
7188    public void onStartTemporaryDetach() {
7189        super.onStartTemporaryDetach();
7190        // Only track when onStartTemporaryDetach() is called directly,
7191        // usually because this instance is an editable field in a list
7192        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
7193
7194        // Because of View recycling in ListView, there is no easy way to know when a TextView with
7195        // selection becomes visible again. Until a better solution is found, stop text selection
7196        // mode (if any) as soon as this TextView is recycled.
7197        if (mEditor != null) hideControllers();
7198    }
7199
7200    @Override
7201    public void onFinishTemporaryDetach() {
7202        super.onFinishTemporaryDetach();
7203        // Only track when onStartTemporaryDetach() is called directly,
7204        // usually because this instance is an editable field in a list
7205        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
7206    }
7207
7208    @Override
7209    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
7210        if (mTemporaryDetach) {
7211            // If we are temporarily in the detach state, then do nothing.
7212            super.onFocusChanged(focused, direction, previouslyFocusedRect);
7213            return;
7214        }
7215
7216        if (mEditor != null) getEditor().onFocusChanged(focused, direction);
7217
7218        if (focused) {
7219            if (mText instanceof Spannable) {
7220                Spannable sp = (Spannable) mText;
7221                MetaKeyKeyListener.resetMetaState(sp);
7222            }
7223        }
7224
7225        startStopMarquee(focused);
7226
7227        if (mTransformation != null) {
7228            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
7229        }
7230
7231        super.onFocusChanged(focused, direction, previouslyFocusedRect);
7232    }
7233
7234    @Override
7235    public void onWindowFocusChanged(boolean hasWindowFocus) {
7236        super.onWindowFocusChanged(hasWindowFocus);
7237
7238        if (mEditor != null) getEditor().onWindowFocusChanged(hasWindowFocus);
7239
7240        startStopMarquee(hasWindowFocus);
7241    }
7242
7243    @Override
7244    protected void onVisibilityChanged(View changedView, int visibility) {
7245        super.onVisibilityChanged(changedView, visibility);
7246        if (mEditor != null && visibility != VISIBLE) {
7247            hideControllers();
7248        }
7249    }
7250
7251    /**
7252     * Use {@link BaseInputConnection#removeComposingSpans
7253     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
7254     * state from this text view.
7255     */
7256    public void clearComposingText() {
7257        if (mText instanceof Spannable) {
7258            BaseInputConnection.removeComposingSpans((Spannable)mText);
7259        }
7260    }
7261
7262    @Override
7263    public void setSelected(boolean selected) {
7264        boolean wasSelected = isSelected();
7265
7266        super.setSelected(selected);
7267
7268        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7269            if (selected) {
7270                startMarquee();
7271            } else {
7272                stopMarquee();
7273            }
7274        }
7275    }
7276
7277    @Override
7278    public boolean onTouchEvent(MotionEvent event) {
7279        final int action = event.getActionMasked();
7280
7281        if (mEditor != null) getEditor().onTouchEvent(event);
7282
7283        final boolean superResult = super.onTouchEvent(event);
7284
7285        /*
7286         * Don't handle the release after a long press, because it will
7287         * move the selection away from whatever the menu action was
7288         * trying to affect.
7289         */
7290        if (mEditor != null && getEditor().mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
7291            getEditor().mDiscardNextActionUp = false;
7292            return superResult;
7293        }
7294
7295        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
7296                (mEditor == null || !getEditor().mIgnoreActionUpEvent) && isFocused();
7297
7298         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
7299                && mText instanceof Spannable && mLayout != null) {
7300            boolean handled = false;
7301
7302            if (mMovement != null) {
7303                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
7304            }
7305
7306            final boolean textIsSelectable = isTextSelectable();
7307            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
7308                // The LinkMovementMethod which should handle taps on links has not been installed
7309                // on non editable text that support text selection.
7310                // We reproduce its behavior here to open links for these.
7311                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
7312                        getSelectionEnd(), ClickableSpan.class);
7313
7314                if (links.length > 0) {
7315                    links[0].onClick(this);
7316                    handled = true;
7317                }
7318            }
7319
7320            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
7321                // Show the IME, except when selecting in read-only text.
7322                final InputMethodManager imm = InputMethodManager.peekInstance();
7323                viewClicked(imm);
7324                if (!textIsSelectable) {
7325                    handled |= imm != null && imm.showSoftInput(this, 0);
7326                }
7327
7328                boolean selectAllGotFocus = getEditor().mSelectAllOnFocus && didTouchFocusSelect();
7329                hideControllers();
7330                if (!selectAllGotFocus && mText.length() > 0) {
7331                    // Move cursor
7332                    final int offset = getOffsetForPosition(event.getX(), event.getY());
7333                    Selection.setSelection((Spannable) mText, offset);
7334                    if (getEditor().mSpellChecker != null) {
7335                        // When the cursor moves, the word that was typed may need spell check
7336                        getEditor().mSpellChecker.onSelectionChanged();
7337                    }
7338                    if (!extractedTextModeWillBeStarted()) {
7339                        if (isCursorInsideEasyCorrectionSpan()) {
7340                            getEditor().mShowSuggestionRunnable = new Runnable() {
7341                                public void run() {
7342                                    showSuggestions();
7343                                }
7344                            };
7345                            // removeCallbacks is performed on every touch
7346                            postDelayed(getEditor().mShowSuggestionRunnable,
7347                                    ViewConfiguration.getDoubleTapTimeout());
7348                        } else if (hasInsertionController()) {
7349                            getInsertionController().show();
7350                        }
7351                    }
7352                }
7353
7354                handled = true;
7355            }
7356
7357            if (handled) {
7358                return true;
7359            }
7360        }
7361
7362        return superResult;
7363    }
7364
7365    /**
7366     * @return <code>true</code> if the cursor/current selection overlaps a {@link SuggestionSpan}.
7367     */
7368    private boolean isCursorInsideSuggestionSpan() {
7369        if (!(mText instanceof Spannable)) return false;
7370
7371        SuggestionSpan[] suggestionSpans = ((Spannable) mText).getSpans(getSelectionStart(),
7372                getSelectionEnd(), SuggestionSpan.class);
7373        return (suggestionSpans.length > 0);
7374    }
7375
7376    /**
7377     * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with
7378     * {@link SuggestionSpan#FLAG_EASY_CORRECT} set.
7379     */
7380    private boolean isCursorInsideEasyCorrectionSpan() {
7381        Spannable spannable = (Spannable) mText;
7382        SuggestionSpan[] suggestionSpans = spannable.getSpans(getSelectionStart(),
7383                getSelectionEnd(), SuggestionSpan.class);
7384        for (int i = 0; i < suggestionSpans.length; i++) {
7385            if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) {
7386                return true;
7387            }
7388        }
7389        return false;
7390    }
7391
7392    /**
7393     * Downgrades to simple suggestions all the easy correction spans that are not a spell check
7394     * span.
7395     */
7396    private void downgradeEasyCorrectionSpans() {
7397        if (mText instanceof Spannable) {
7398            Spannable spannable = (Spannable) mText;
7399            SuggestionSpan[] suggestionSpans = spannable.getSpans(0,
7400                    spannable.length(), SuggestionSpan.class);
7401            for (int i = 0; i < suggestionSpans.length; i++) {
7402                int flags = suggestionSpans[i].getFlags();
7403                if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
7404                        && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) {
7405                    flags &= ~SuggestionSpan.FLAG_EASY_CORRECT;
7406                    suggestionSpans[i].setFlags(flags);
7407                }
7408            }
7409        }
7410    }
7411
7412    @Override
7413    public boolean onGenericMotionEvent(MotionEvent event) {
7414        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7415            try {
7416                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
7417                    return true;
7418                }
7419            } catch (AbstractMethodError ex) {
7420                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
7421                // Ignore its absence in case third party applications implemented the
7422                // interface directly.
7423            }
7424        }
7425        return super.onGenericMotionEvent(event);
7426    }
7427
7428    private void prepareCursorControllers() {
7429        if (mEditor == null) return;
7430
7431        boolean windowSupportsHandles = false;
7432
7433        ViewGroup.LayoutParams params = getRootView().getLayoutParams();
7434        if (params instanceof WindowManager.LayoutParams) {
7435            WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params;
7436            windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW
7437                    || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW;
7438        }
7439
7440        getEditor().mInsertionControllerEnabled = windowSupportsHandles && isCursorVisible() && mLayout != null;
7441        getEditor().mSelectionControllerEnabled = windowSupportsHandles && textCanBeSelected() &&
7442                mLayout != null;
7443
7444        if (!getEditor().mInsertionControllerEnabled) {
7445            hideInsertionPointCursorController();
7446            if (getEditor().mInsertionPointCursorController != null) {
7447                getEditor().mInsertionPointCursorController.onDetached();
7448                getEditor().mInsertionPointCursorController = null;
7449            }
7450        }
7451
7452        if (!getEditor().mSelectionControllerEnabled) {
7453            stopSelectionActionMode();
7454            if (getEditor().mSelectionModifierCursorController != null) {
7455                getEditor().mSelectionModifierCursorController.onDetached();
7456                getEditor().mSelectionModifierCursorController = null;
7457            }
7458        }
7459    }
7460
7461    /**
7462     * @return True iff this TextView contains a text that can be edited, or if this is
7463     * a selectable TextView.
7464     */
7465    private boolean isTextEditable() {
7466        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
7467    }
7468
7469    /**
7470     * Returns true, only while processing a touch gesture, if the initial
7471     * touch down event caused focus to move to the text view and as a result
7472     * its selection changed.  Only valid while processing the touch gesture
7473     * of interest.
7474     */
7475    public boolean didTouchFocusSelect() {
7476        return mEditor != null && getEditor().mTouchFocusSelected;
7477    }
7478
7479    @Override
7480    public void cancelLongPress() {
7481        super.cancelLongPress();
7482        if (mEditor != null) getEditor().mIgnoreActionUpEvent = true;
7483    }
7484
7485    @Override
7486    public boolean onTrackballEvent(MotionEvent event) {
7487        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7488            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
7489                return true;
7490            }
7491        }
7492
7493        return super.onTrackballEvent(event);
7494    }
7495
7496    public void setScroller(Scroller s) {
7497        mScroller = s;
7498    }
7499
7500    /**
7501     * @return True when the TextView isFocused and has a valid zero-length selection (cursor).
7502     */
7503    private boolean shouldBlink() {
7504        if (mEditor == null || !isCursorVisible() || !isFocused()) return false;
7505
7506        final int start = getSelectionStart();
7507        if (start < 0) return false;
7508
7509        final int end = getSelectionEnd();
7510        if (end < 0) return false;
7511
7512        return start == end;
7513    }
7514
7515    private void makeBlink() {
7516        if (shouldBlink()) {
7517            getEditor().mShowCursor = SystemClock.uptimeMillis();
7518            if (getEditor().mBlink == null) getEditor().mBlink = new Blink(this);
7519            getEditor().mBlink.removeCallbacks(getEditor().mBlink);
7520            getEditor().mBlink.postAtTime(getEditor().mBlink, getEditor().mShowCursor + BLINK);
7521        } else {
7522            if (mEditor != null && getEditor().mBlink != null) getEditor().mBlink.removeCallbacks(getEditor().mBlink);
7523        }
7524    }
7525
7526    @Override
7527    protected float getLeftFadingEdgeStrength() {
7528        if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return 0.0f;
7529        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7530                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7531            if (mMarquee != null && !mMarquee.isStopped()) {
7532                final Marquee marquee = mMarquee;
7533                if (marquee.shouldDrawLeftFade()) {
7534                    return marquee.mScroll / getHorizontalFadingEdgeLength();
7535                } else {
7536                    return 0.0f;
7537                }
7538            } else if (getLineCount() == 1) {
7539                final int layoutDirection = getResolvedLayoutDirection();
7540                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7541                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7542                    case Gravity.LEFT:
7543                        return 0.0f;
7544                    case Gravity.RIGHT:
7545                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
7546                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
7547                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
7548                    case Gravity.CENTER_HORIZONTAL:
7549                        return 0.0f;
7550                }
7551            }
7552        }
7553        return super.getLeftFadingEdgeStrength();
7554    }
7555
7556    @Override
7557    protected float getRightFadingEdgeStrength() {
7558        if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return 0.0f;
7559        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7560                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7561            if (mMarquee != null && !mMarquee.isStopped()) {
7562                final Marquee marquee = mMarquee;
7563                return (marquee.mMaxFadeScroll - marquee.mScroll) / getHorizontalFadingEdgeLength();
7564            } else if (getLineCount() == 1) {
7565                final int layoutDirection = getResolvedLayoutDirection();
7566                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7567                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7568                    case Gravity.LEFT:
7569                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
7570                                getCompoundPaddingRight();
7571                        final float lineWidth = mLayout.getLineWidth(0);
7572                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
7573                    case Gravity.RIGHT:
7574                        return 0.0f;
7575                    case Gravity.CENTER_HORIZONTAL:
7576                    case Gravity.FILL_HORIZONTAL:
7577                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
7578                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
7579                                getHorizontalFadingEdgeLength();
7580                }
7581            }
7582        }
7583        return super.getRightFadingEdgeStrength();
7584    }
7585
7586    @Override
7587    protected int computeHorizontalScrollRange() {
7588        if (mLayout != null) {
7589            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
7590                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
7591        }
7592
7593        return super.computeHorizontalScrollRange();
7594    }
7595
7596    @Override
7597    protected int computeVerticalScrollRange() {
7598        if (mLayout != null)
7599            return mLayout.getHeight();
7600
7601        return super.computeVerticalScrollRange();
7602    }
7603
7604    @Override
7605    protected int computeVerticalScrollExtent() {
7606        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
7607    }
7608
7609    @Override
7610    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
7611        super.findViewsWithText(outViews, searched, flags);
7612        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
7613                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
7614            String searchedLowerCase = searched.toString().toLowerCase();
7615            String textLowerCase = mText.toString().toLowerCase();
7616            if (textLowerCase.contains(searchedLowerCase)) {
7617                outViews.add(this);
7618            }
7619        }
7620    }
7621
7622    public enum BufferType {
7623        NORMAL, SPANNABLE, EDITABLE,
7624    }
7625
7626    /**
7627     * Returns the TextView_textColor attribute from the
7628     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
7629     * from the TextView_textAppearance attribute, if TextView_textColor
7630     * was not set directly.
7631     */
7632    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
7633        ColorStateList colors;
7634        colors = attrs.getColorStateList(com.android.internal.R.styleable.
7635                                         TextView_textColor);
7636
7637        if (colors == null) {
7638            int ap = attrs.getResourceId(com.android.internal.R.styleable.
7639                                         TextView_textAppearance, -1);
7640            if (ap != -1) {
7641                TypedArray appearance;
7642                appearance = context.obtainStyledAttributes(ap,
7643                                            com.android.internal.R.styleable.TextAppearance);
7644                colors = appearance.getColorStateList(com.android.internal.R.styleable.
7645                                                  TextAppearance_textColor);
7646                appearance.recycle();
7647            }
7648        }
7649
7650        return colors;
7651    }
7652
7653    /**
7654     * Returns the default color from the TextView_textColor attribute
7655     * from the AttributeSet, if set, or the default color from the
7656     * TextAppearance_textColor from the TextView_textAppearance attribute,
7657     * if TextView_textColor was not set directly.
7658     */
7659    public static int getTextColor(Context context,
7660                                   TypedArray attrs,
7661                                   int def) {
7662        ColorStateList colors = getTextColors(context, attrs);
7663
7664        if (colors == null) {
7665            return def;
7666        } else {
7667            return colors.getDefaultColor();
7668        }
7669    }
7670
7671    @Override
7672    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
7673        final int filteredMetaState = event.getMetaState() & ~KeyEvent.META_CTRL_MASK;
7674        if (KeyEvent.metaStateHasNoModifiers(filteredMetaState)) {
7675            switch (keyCode) {
7676            case KeyEvent.KEYCODE_A:
7677                if (canSelectText()) {
7678                    return onTextContextMenuItem(ID_SELECT_ALL);
7679                }
7680                break;
7681            case KeyEvent.KEYCODE_X:
7682                if (canCut()) {
7683                    return onTextContextMenuItem(ID_CUT);
7684                }
7685                break;
7686            case KeyEvent.KEYCODE_C:
7687                if (canCopy()) {
7688                    return onTextContextMenuItem(ID_COPY);
7689                }
7690                break;
7691            case KeyEvent.KEYCODE_V:
7692                if (canPaste()) {
7693                    return onTextContextMenuItem(ID_PASTE);
7694                }
7695                break;
7696            }
7697        }
7698        return super.onKeyShortcut(keyCode, event);
7699    }
7700
7701    /**
7702     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
7703     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
7704     * a selection controller (see {@link #prepareCursorControllers()}), but this is not sufficient.
7705     */
7706    private boolean canSelectText() {
7707        return hasSelectionController() && mText.length() != 0;
7708    }
7709
7710    /**
7711     * Test based on the <i>intrinsic</i> charateristics of the TextView.
7712     * The text must be spannable and the movement method must allow for arbitary selection.
7713     *
7714     * See also {@link #canSelectText()}.
7715     */
7716    private boolean textCanBeSelected() {
7717        // prepareCursorController() relies on this method.
7718        // If you change this condition, make sure prepareCursorController is called anywhere
7719        // the value of this condition might be changed.
7720        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
7721        return isTextEditable() || (isTextSelectable() && mText instanceof Spannable && isEnabled());
7722    }
7723
7724    private boolean canCut() {
7725        if (hasPasswordTransformationMethod()) {
7726            return false;
7727        }
7728
7729        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null && getEditor().mKeyListener != null) {
7730            return true;
7731        }
7732
7733        return false;
7734    }
7735
7736    private boolean canCopy() {
7737        if (hasPasswordTransformationMethod()) {
7738            return false;
7739        }
7740
7741        if (mText.length() > 0 && hasSelection()) {
7742            return true;
7743        }
7744
7745        return false;
7746    }
7747
7748    private boolean canPaste() {
7749        return (mText instanceof Editable &&
7750                mEditor != null && getEditor().mKeyListener != null &&
7751                getSelectionStart() >= 0 &&
7752                getSelectionEnd() >= 0 &&
7753                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
7754                hasPrimaryClip());
7755    }
7756
7757    private boolean selectAll() {
7758        final int length = mText.length();
7759        Selection.setSelection((Spannable) mText, 0, length);
7760        return length > 0;
7761    }
7762
7763    /**
7764     * Adjusts selection to the word under last touch offset.
7765     * Return true if the operation was successfully performed.
7766     */
7767    private boolean selectCurrentWord() {
7768        if (!canSelectText()) {
7769            return false;
7770        }
7771
7772        if (hasPasswordTransformationMethod()) {
7773            // Always select all on a password field.
7774            // Cut/copy menu entries are not available for passwords, but being able to select all
7775            // is however useful to delete or paste to replace the entire content.
7776            return selectAll();
7777        }
7778
7779        int inputType = getInputType();
7780        int klass = inputType & InputType.TYPE_MASK_CLASS;
7781        int variation = inputType & InputType.TYPE_MASK_VARIATION;
7782
7783        // Specific text field types: select the entire text for these
7784        if (klass == InputType.TYPE_CLASS_NUMBER ||
7785                klass == InputType.TYPE_CLASS_PHONE ||
7786                klass == InputType.TYPE_CLASS_DATETIME ||
7787                variation == InputType.TYPE_TEXT_VARIATION_URI ||
7788                variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS ||
7789                variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS ||
7790                variation == InputType.TYPE_TEXT_VARIATION_FILTER) {
7791            return selectAll();
7792        }
7793
7794        long lastTouchOffsets = getLastTouchOffsets();
7795        final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets);
7796        final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets);
7797
7798        // Safety check in case standard touch event handling has been bypassed
7799        if (minOffset < 0 || minOffset >= mText.length()) return false;
7800        if (maxOffset < 0 || maxOffset >= mText.length()) return false;
7801
7802        int selectionStart, selectionEnd;
7803
7804        // If a URLSpan (web address, email, phone...) is found at that position, select it.
7805        URLSpan[] urlSpans = ((Spanned) mText).getSpans(minOffset, maxOffset, URLSpan.class);
7806        if (urlSpans.length >= 1) {
7807            URLSpan urlSpan = urlSpans[0];
7808            selectionStart = ((Spanned) mText).getSpanStart(urlSpan);
7809            selectionEnd = ((Spanned) mText).getSpanEnd(urlSpan);
7810        } else {
7811            final WordIterator wordIterator = getWordIterator();
7812            wordIterator.setCharSequence(mText, minOffset, maxOffset);
7813
7814            selectionStart = wordIterator.getBeginning(minOffset);
7815            selectionEnd = wordIterator.getEnd(maxOffset);
7816
7817            if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE ||
7818                    selectionStart == selectionEnd) {
7819                // Possible when the word iterator does not properly handle the text's language
7820                long range = getCharRange(minOffset);
7821                selectionStart = TextUtils.unpackRangeStartFromLong(range);
7822                selectionEnd = TextUtils.unpackRangeEndFromLong(range);
7823            }
7824        }
7825
7826        Selection.setSelection((Spannable) mText, selectionStart, selectionEnd);
7827        return selectionEnd > selectionStart;
7828    }
7829
7830    /**
7831     * This is a temporary method. Future versions may support multi-locale text.
7832     *
7833     * @return The locale that should be used for a word iterator and a spell checker
7834     * in this TextView, based on the current spell checker settings,
7835     * the current IME's locale, or the system default locale.
7836     * @hide
7837     */
7838    public Locale getTextServicesLocale() {
7839        Locale locale = Locale.getDefault();
7840        final TextServicesManager textServicesManager = (TextServicesManager)
7841                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
7842        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
7843        if (subtype != null) {
7844            locale = new Locale(subtype.getLocale());
7845        }
7846        return locale;
7847    }
7848
7849    void onLocaleChanged() {
7850        // Will be re-created on demand in getWordIterator with the proper new locale
7851        getEditor().mWordIterator = null;
7852    }
7853
7854    /**
7855     * @hide
7856     */
7857    public WordIterator getWordIterator() {
7858        if (getEditor().mWordIterator == null) {
7859            getEditor().mWordIterator = new WordIterator(getTextServicesLocale());
7860        }
7861        return getEditor().mWordIterator;
7862    }
7863
7864    private long getCharRange(int offset) {
7865        final int textLength = mText.length();
7866        if (offset + 1 < textLength) {
7867            final char currentChar = mText.charAt(offset);
7868            final char nextChar = mText.charAt(offset + 1);
7869            if (Character.isSurrogatePair(currentChar, nextChar)) {
7870                return TextUtils.packRangeInLong(offset,  offset + 2);
7871            }
7872        }
7873        if (offset < textLength) {
7874            return TextUtils.packRangeInLong(offset,  offset + 1);
7875        }
7876        if (offset - 2 >= 0) {
7877            final char previousChar = mText.charAt(offset - 1);
7878            final char previousPreviousChar = mText.charAt(offset - 2);
7879            if (Character.isSurrogatePair(previousPreviousChar, previousChar)) {
7880                return TextUtils.packRangeInLong(offset - 2,  offset);
7881            }
7882        }
7883        if (offset - 1 >= 0) {
7884            return TextUtils.packRangeInLong(offset - 1,  offset);
7885        }
7886        return TextUtils.packRangeInLong(offset,  offset);
7887    }
7888
7889    private long getLastTouchOffsets() {
7890        SelectionModifierCursorController selectionController = getSelectionController();
7891        final int minOffset = selectionController.getMinTouchOffset();
7892        final int maxOffset = selectionController.getMaxTouchOffset();
7893        return TextUtils.packRangeInLong(minOffset, maxOffset);
7894    }
7895
7896    @Override
7897    public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
7898        super.onPopulateAccessibilityEvent(event);
7899
7900        final boolean isPassword = hasPasswordTransformationMethod();
7901        if (!isPassword) {
7902            CharSequence text = getTextForAccessibility();
7903            if (!TextUtils.isEmpty(text)) {
7904                event.getText().add(text);
7905            }
7906        }
7907    }
7908
7909    @Override
7910    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
7911        super.onInitializeAccessibilityEvent(event);
7912
7913        event.setClassName(TextView.class.getName());
7914        final boolean isPassword = hasPasswordTransformationMethod();
7915        event.setPassword(isPassword);
7916
7917        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
7918            event.setFromIndex(Selection.getSelectionStart(mText));
7919            event.setToIndex(Selection.getSelectionEnd(mText));
7920            event.setItemCount(mText.length());
7921        }
7922    }
7923
7924    @Override
7925    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
7926        super.onInitializeAccessibilityNodeInfo(info);
7927
7928        info.setClassName(TextView.class.getName());
7929        final boolean isPassword = hasPasswordTransformationMethod();
7930        info.setPassword(isPassword);
7931
7932        if (!isPassword) {
7933            info.setText(getTextForAccessibility());
7934        }
7935    }
7936
7937    @Override
7938    public void sendAccessibilityEvent(int eventType) {
7939        // Do not send scroll events since first they are not interesting for
7940        // accessibility and second such events a generated too frequently.
7941        // For details see the implementation of bringTextIntoView().
7942        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
7943            return;
7944        }
7945        super.sendAccessibilityEvent(eventType);
7946    }
7947
7948    /**
7949     * Gets the text reported for accessibility purposes. It is the
7950     * text if not empty or the hint.
7951     *
7952     * @return The accessibility text.
7953     */
7954    private CharSequence getTextForAccessibility() {
7955        CharSequence text = getText();
7956        if (TextUtils.isEmpty(text)) {
7957            text = getHint();
7958        }
7959        return text;
7960    }
7961
7962    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
7963            int fromIndex, int removedCount, int addedCount) {
7964        AccessibilityEvent event =
7965            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
7966        event.setFromIndex(fromIndex);
7967        event.setRemovedCount(removedCount);
7968        event.setAddedCount(addedCount);
7969        event.setBeforeText(beforeText);
7970        sendAccessibilityEventUnchecked(event);
7971    }
7972
7973    /**
7974     * Returns whether this text view is a current input method target.  The
7975     * default implementation just checks with {@link InputMethodManager}.
7976     */
7977    public boolean isInputMethodTarget() {
7978        InputMethodManager imm = InputMethodManager.peekInstance();
7979        return imm != null && imm.isActive(this);
7980    }
7981
7982    // Selection context mode
7983    private static final int ID_SELECT_ALL = android.R.id.selectAll;
7984    private static final int ID_CUT = android.R.id.cut;
7985    private static final int ID_COPY = android.R.id.copy;
7986    private static final int ID_PASTE = android.R.id.paste;
7987
7988    /**
7989     * Called when a context menu option for the text view is selected.  Currently
7990     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
7991     * {@link android.R.id#copy} or {@link android.R.id#paste}.
7992     *
7993     * @return true if the context menu item action was performed.
7994     */
7995    public boolean onTextContextMenuItem(int id) {
7996        int min = 0;
7997        int max = mText.length();
7998
7999        if (isFocused()) {
8000            final int selStart = getSelectionStart();
8001            final int selEnd = getSelectionEnd();
8002
8003            min = Math.max(0, Math.min(selStart, selEnd));
8004            max = Math.max(0, Math.max(selStart, selEnd));
8005        }
8006
8007        switch (id) {
8008            case ID_SELECT_ALL:
8009                // This does not enter text selection mode. Text is highlighted, so that it can be
8010                // bulk edited, like selectAllOnFocus does. Returns true even if text is empty.
8011                selectAll();
8012                return true;
8013
8014            case ID_PASTE:
8015                paste(min, max);
8016                return true;
8017
8018            case ID_CUT:
8019                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
8020                deleteText_internal(min, max);
8021                stopSelectionActionMode();
8022                return true;
8023
8024            case ID_COPY:
8025                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
8026                stopSelectionActionMode();
8027                return true;
8028        }
8029        return false;
8030    }
8031
8032    private CharSequence getTransformedText(int start, int end) {
8033        return removeSuggestionSpans(mTransformed.subSequence(start, end));
8034    }
8035
8036    /**
8037     * Prepare text so that there are not zero or two spaces at beginning and end of region defined
8038     * by [min, max] when replacing this region by paste.
8039     * Note that if there were two spaces (or more) at that position before, they are kept. We just
8040     * make sure we do not add an extra one from the paste content.
8041     */
8042    private long prepareSpacesAroundPaste(int min, int max, CharSequence paste) {
8043        if (paste.length() > 0) {
8044            if (min > 0) {
8045                final char charBefore = mTransformed.charAt(min - 1);
8046                final char charAfter = paste.charAt(0);
8047
8048                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8049                    // Two spaces at beginning of paste: remove one
8050                    final int originalLength = mText.length();
8051                    deleteText_internal(min - 1, min);
8052                    // Due to filters, there is no guarantee that exactly one character was
8053                    // removed: count instead.
8054                    final int delta = mText.length() - originalLength;
8055                    min += delta;
8056                    max += delta;
8057                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8058                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8059                    // No space at beginning of paste: add one
8060                    final int originalLength = mText.length();
8061                    replaceText_internal(min, min, " ");
8062                    // Taking possible filters into account as above.
8063                    final int delta = mText.length() - originalLength;
8064                    min += delta;
8065                    max += delta;
8066                }
8067            }
8068
8069            if (max < mText.length()) {
8070                final char charBefore = paste.charAt(paste.length() - 1);
8071                final char charAfter = mTransformed.charAt(max);
8072
8073                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8074                    // Two spaces at end of paste: remove one
8075                    deleteText_internal(max, max + 1);
8076                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8077                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8078                    // No space at end of paste: add one
8079                    replaceText_internal(max, max, " ");
8080                }
8081            }
8082        }
8083
8084        return TextUtils.packRangeInLong(min, max);
8085    }
8086
8087    private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) {
8088        TextView shadowView = (TextView) inflate(mContext,
8089                com.android.internal.R.layout.text_drag_thumbnail, null);
8090
8091        if (shadowView == null) {
8092            throw new IllegalArgumentException("Unable to inflate text drag thumbnail");
8093        }
8094
8095        if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) {
8096            text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH);
8097        }
8098        shadowView.setText(text);
8099        shadowView.setTextColor(getTextColors());
8100
8101        shadowView.setTextAppearance(mContext, R.styleable.Theme_textAppearanceLarge);
8102        shadowView.setGravity(Gravity.CENTER);
8103
8104        shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
8105                ViewGroup.LayoutParams.WRAP_CONTENT));
8106
8107        final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
8108        shadowView.measure(size, size);
8109
8110        shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight());
8111        shadowView.invalidate();
8112        return new DragShadowBuilder(shadowView);
8113    }
8114
8115    @Override
8116    public boolean performLongClick() {
8117        boolean handled = false;
8118
8119        if (super.performLongClick()) {
8120            handled = true;
8121        }
8122
8123        if (mEditor == null) {
8124            return handled;
8125        }
8126
8127        // Long press in empty space moves cursor and shows the Paste affordance if available.
8128        if (!handled && !isPositionOnText(getEditor().mLastDownPositionX, getEditor().mLastDownPositionY) &&
8129                getEditor().mInsertionControllerEnabled) {
8130            final int offset = getOffsetForPosition(getEditor().mLastDownPositionX, getEditor().mLastDownPositionY);
8131            stopSelectionActionMode();
8132            Selection.setSelection((Spannable) mText, offset);
8133            getInsertionController().showWithActionPopup();
8134            handled = true;
8135        }
8136
8137        if (!handled && getEditor().mSelectionActionMode != null) {
8138            if (touchPositionIsInSelection()) {
8139                // Start a drag
8140                final int start = getSelectionStart();
8141                final int end = getSelectionEnd();
8142                CharSequence selectedText = getTransformedText(start, end);
8143                ClipData data = ClipData.newPlainText(null, selectedText);
8144                DragLocalState localState = new DragLocalState(this, start, end);
8145                startDrag(data, getTextThumbnailBuilder(selectedText), localState, 0);
8146                stopSelectionActionMode();
8147            } else {
8148                getSelectionController().hide();
8149                selectCurrentWord();
8150                getSelectionController().show();
8151            }
8152            handled = true;
8153        }
8154
8155        // Start a new selection
8156        if (!handled) {
8157            handled = startSelectionActionMode();
8158        }
8159
8160        if (handled) {
8161            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
8162            getEditor().mDiscardNextActionUp = true;
8163        }
8164
8165        return handled;
8166    }
8167
8168    private boolean touchPositionIsInSelection() {
8169        int selectionStart = getSelectionStart();
8170        int selectionEnd = getSelectionEnd();
8171
8172        if (selectionStart == selectionEnd) {
8173            return false;
8174        }
8175
8176        if (selectionStart > selectionEnd) {
8177            int tmp = selectionStart;
8178            selectionStart = selectionEnd;
8179            selectionEnd = tmp;
8180            Selection.setSelection((Spannable) mText, selectionStart, selectionEnd);
8181        }
8182
8183        SelectionModifierCursorController selectionController = getSelectionController();
8184        int minOffset = selectionController.getMinTouchOffset();
8185        int maxOffset = selectionController.getMaxTouchOffset();
8186
8187        return ((minOffset >= selectionStart) && (maxOffset < selectionEnd));
8188    }
8189
8190    private PositionListener getPositionListener() {
8191        if (getEditor().mPositionListener == null) {
8192            getEditor().mPositionListener = new PositionListener();
8193        }
8194        return getEditor().mPositionListener;
8195    }
8196
8197    private interface TextViewPositionListener {
8198        public void updatePosition(int parentPositionX, int parentPositionY,
8199                boolean parentPositionChanged, boolean parentScrolled);
8200    }
8201
8202    private boolean isPositionVisible(int positionX, int positionY) {
8203        synchronized (TEMP_POSITION) {
8204            final float[] position = TEMP_POSITION;
8205            position[0] = positionX;
8206            position[1] = positionY;
8207            View view = this;
8208
8209            while (view != null) {
8210                if (view != this) {
8211                    // Local scroll is already taken into account in positionX/Y
8212                    position[0] -= view.getScrollX();
8213                    position[1] -= view.getScrollY();
8214                }
8215
8216                if (position[0] < 0 || position[1] < 0 ||
8217                        position[0] > view.getWidth() || position[1] > view.getHeight()) {
8218                    return false;
8219                }
8220
8221                if (!view.getMatrix().isIdentity()) {
8222                    view.getMatrix().mapPoints(position);
8223                }
8224
8225                position[0] += view.getLeft();
8226                position[1] += view.getTop();
8227
8228                final ViewParent parent = view.getParent();
8229                if (parent instanceof View) {
8230                    view = (View) parent;
8231                } else {
8232                    // We've reached the ViewRoot, stop iterating
8233                    view = null;
8234                }
8235            }
8236        }
8237
8238        // We've been able to walk up the view hierarchy and the position was never clipped
8239        return true;
8240    }
8241
8242    private boolean isOffsetVisible(int offset) {
8243        final int line = mLayout.getLineForOffset(offset);
8244        final int lineBottom = mLayout.getLineBottom(line);
8245        final int primaryHorizontal = (int) mLayout.getPrimaryHorizontal(offset);
8246        return isPositionVisible(primaryHorizontal + viewportToContentHorizontalOffset(),
8247                lineBottom + viewportToContentVerticalOffset());
8248    }
8249
8250    @Override
8251    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
8252        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
8253        if (mEditor != null) {
8254            if (getEditor().mPositionListener != null) {
8255                getEditor().mPositionListener.onScrollChanged();
8256            }
8257            getEditor().mTextDisplayListIsValid = false;
8258        }
8259    }
8260
8261    /**
8262     * Removes the suggestion spans.
8263     */
8264    CharSequence removeSuggestionSpans(CharSequence text) {
8265       if (text instanceof Spanned) {
8266           Spannable spannable;
8267           if (text instanceof Spannable) {
8268               spannable = (Spannable) text;
8269           } else {
8270               spannable = new SpannableString(text);
8271               text = spannable;
8272           }
8273
8274           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
8275           for (int i = 0; i < spans.length; i++) {
8276               spannable.removeSpan(spans[i]);
8277           }
8278       }
8279       return text;
8280    }
8281
8282    void showSuggestions() {
8283        if (getEditor().mSuggestionsPopupWindow == null) {
8284            getEditor().mSuggestionsPopupWindow = new SuggestionsPopupWindow();
8285        }
8286        hideControllers();
8287        getEditor().mSuggestionsPopupWindow.show();
8288    }
8289
8290    boolean areSuggestionsShown() {
8291        return getEditor().mSuggestionsPopupWindow != null && getEditor().mSuggestionsPopupWindow.isShowing();
8292    }
8293
8294    /**
8295     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
8296     * by the IME or by the spell checker as the user types. This is done by adding
8297     * {@link SuggestionSpan}s to the text.
8298     *
8299     * When suggestions are enabled (default), this list of suggestions will be displayed when the
8300     * user asks for them on these parts of the text. This value depends on the inputType of this
8301     * TextView.
8302     *
8303     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
8304     *
8305     * In addition, the type variation must be one of
8306     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
8307     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
8308     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
8309     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
8310     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
8311     *
8312     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
8313     *
8314     * @return true if the suggestions popup window is enabled, based on the inputType.
8315     */
8316    public boolean isSuggestionsEnabled() {
8317        if (mEditor == null) return false;
8318        if ((getEditor().mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) return false;
8319        if ((getEditor().mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
8320
8321        final int variation = getEditor().mInputType & EditorInfo.TYPE_MASK_VARIATION;
8322        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
8323                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
8324                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
8325                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
8326                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
8327    }
8328
8329    /**
8330     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
8331     * selection is initiated in this View.
8332     *
8333     * The standard implementation populates the menu with a subset of Select All, Cut, Copy and
8334     * Paste actions, depending on what this View supports.
8335     *
8336     * A custom implementation can add new entries in the default menu in its
8337     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The
8338     * default actions can also be removed from the menu using {@link Menu#removeItem(int)} and
8339     * passing {@link android.R.id#selectAll}, {@link android.R.id#cut}, {@link android.R.id#copy}
8340     * or {@link android.R.id#paste} ids as parameters.
8341     *
8342     * Returning false from
8343     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will prevent
8344     * the action mode from being started.
8345     *
8346     * Action click events should be handled by the custom implementation of
8347     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
8348     *
8349     * Note that text selection mode is not started when a TextView receives focus and the
8350     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
8351     * that case, to allow for quick replacement.
8352     */
8353    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
8354        createEditorIfNeeded("custom selection action mode set");
8355        getEditor().mCustomSelectionActionModeCallback = actionModeCallback;
8356    }
8357
8358    /**
8359     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
8360     *
8361     * @return The current custom selection callback.
8362     */
8363    public ActionMode.Callback getCustomSelectionActionModeCallback() {
8364        return mEditor == null ? null : getEditor().mCustomSelectionActionModeCallback;
8365    }
8366
8367    /**
8368     *
8369     * @return true if the selection mode was actually started.
8370     */
8371    private boolean startSelectionActionMode() {
8372        if (getEditor().mSelectionActionMode != null) {
8373            // Selection action mode is already started
8374            return false;
8375        }
8376
8377        if (!canSelectText() || !requestFocus()) {
8378            Log.w(LOG_TAG, "TextView does not support text selection. Action mode cancelled.");
8379            return false;
8380        }
8381
8382        if (!hasSelection()) {
8383            // There may already be a selection on device rotation
8384            if (!selectCurrentWord()) {
8385                // No word found under cursor or text selection not permitted.
8386                return false;
8387            }
8388        }
8389
8390        boolean willExtract = extractedTextModeWillBeStarted();
8391
8392        // Do not start the action mode when extracted text will show up full screen, which would
8393        // immediately hide the newly created action bar and would be visually distracting.
8394        if (!willExtract) {
8395            ActionMode.Callback actionModeCallback = new SelectionActionModeCallback();
8396            getEditor().mSelectionActionMode = startActionMode(actionModeCallback);
8397        }
8398
8399        final boolean selectionStarted = getEditor().mSelectionActionMode != null || willExtract;
8400        if (selectionStarted && !isTextSelectable()) {
8401            // Show the IME to be able to replace text, except when selecting non editable text.
8402            final InputMethodManager imm = InputMethodManager.peekInstance();
8403            if (imm != null) {
8404                imm.showSoftInput(this, 0, null);
8405            }
8406        }
8407
8408        return selectionStarted;
8409    }
8410
8411    private boolean extractedTextModeWillBeStarted() {
8412        if (!(this instanceof ExtractEditText)) {
8413            final InputMethodManager imm = InputMethodManager.peekInstance();
8414            return  imm != null && imm.isFullscreenMode();
8415        }
8416        return false;
8417    }
8418
8419    /**
8420     * @hide
8421     */
8422    protected void stopSelectionActionMode() {
8423        if (getEditor().mSelectionActionMode != null) {
8424            // This will hide the mSelectionModifierCursorController
8425            getEditor().mSelectionActionMode.finish();
8426        }
8427    }
8428
8429    /**
8430     * Paste clipboard content between min and max positions.
8431     */
8432    private void paste(int min, int max) {
8433        ClipboardManager clipboard =
8434            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
8435        ClipData clip = clipboard.getPrimaryClip();
8436        if (clip != null) {
8437            boolean didFirst = false;
8438            for (int i=0; i<clip.getItemCount(); i++) {
8439                CharSequence paste = clip.getItemAt(i).coerceToText(getContext());
8440                if (paste != null) {
8441                    if (!didFirst) {
8442                        long minMax = prepareSpacesAroundPaste(min, max, paste);
8443                        min = TextUtils.unpackRangeStartFromLong(minMax);
8444                        max = TextUtils.unpackRangeEndFromLong(minMax);
8445                        Selection.setSelection((Spannable) mText, max);
8446                        ((Editable) mText).replace(min, max, paste);
8447                        didFirst = true;
8448                    } else {
8449                        ((Editable) mText).insert(getSelectionEnd(), "\n");
8450                        ((Editable) mText).insert(getSelectionEnd(), paste);
8451                    }
8452                }
8453            }
8454            stopSelectionActionMode();
8455            LAST_CUT_OR_COPY_TIME = 0;
8456        }
8457    }
8458
8459    private void setPrimaryClip(ClipData clip) {
8460        ClipboardManager clipboard = (ClipboardManager) getContext().
8461                getSystemService(Context.CLIPBOARD_SERVICE);
8462        clipboard.setPrimaryClip(clip);
8463        LAST_CUT_OR_COPY_TIME = SystemClock.uptimeMillis();
8464    }
8465
8466    private void hideInsertionPointCursorController() {
8467        // No need to create the controller to hide it.
8468        if (getEditor().mInsertionPointCursorController != null) {
8469            getEditor().mInsertionPointCursorController.hide();
8470        }
8471    }
8472
8473    /**
8474     * Hides the insertion controller and stops text selection mode, hiding the selection controller
8475     */
8476    private void hideControllers() {
8477        hideCursorControllers();
8478        hideSpanControllers();
8479    }
8480
8481    private void hideSpanControllers() {
8482        if (mChangeWatcher != null) {
8483            mChangeWatcher.hideControllers();
8484        }
8485    }
8486
8487    private void hideCursorControllers() {
8488        if (getEditor().mSuggestionsPopupWindow != null && !getEditor().mSuggestionsPopupWindow.isShowingUp()) {
8489            // Should be done before hide insertion point controller since it triggers a show of it
8490            getEditor().mSuggestionsPopupWindow.hide();
8491        }
8492        hideInsertionPointCursorController();
8493        stopSelectionActionMode();
8494    }
8495
8496    /**
8497     * Get the character offset closest to the specified absolute position. A typical use case is to
8498     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
8499     *
8500     * @param x The horizontal absolute position of a point on screen
8501     * @param y The vertical absolute position of a point on screen
8502     * @return the character offset for the character whose position is closest to the specified
8503     *  position. Returns -1 if there is no layout.
8504     */
8505    public int getOffsetForPosition(float x, float y) {
8506        if (getLayout() == null) return -1;
8507        final int line = getLineAtCoordinate(y);
8508        final int offset = getOffsetAtCoordinate(line, x);
8509        return offset;
8510    }
8511
8512    private float convertToLocalHorizontalCoordinate(float x) {
8513        x -= getTotalPaddingLeft();
8514        // Clamp the position to inside of the view.
8515        x = Math.max(0.0f, x);
8516        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
8517        x += getScrollX();
8518        return x;
8519    }
8520
8521    private int getLineAtCoordinate(float y) {
8522        y -= getTotalPaddingTop();
8523        // Clamp the position to inside of the view.
8524        y = Math.max(0.0f, y);
8525        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
8526        y += getScrollY();
8527        return getLayout().getLineForVertical((int) y);
8528    }
8529
8530    private int getOffsetAtCoordinate(int line, float x) {
8531        x = convertToLocalHorizontalCoordinate(x);
8532        return getLayout().getOffsetForHorizontal(line, x);
8533    }
8534
8535    /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed
8536     * in the view. Returns false when the position is in the empty space of left/right of text.
8537     */
8538    private boolean isPositionOnText(float x, float y) {
8539        if (getLayout() == null) return false;
8540
8541        final int line = getLineAtCoordinate(y);
8542        x = convertToLocalHorizontalCoordinate(x);
8543
8544        if (x < getLayout().getLineLeft(line)) return false;
8545        if (x > getLayout().getLineRight(line)) return false;
8546        return true;
8547    }
8548
8549    @Override
8550    public boolean onDragEvent(DragEvent event) {
8551        switch (event.getAction()) {
8552            case DragEvent.ACTION_DRAG_STARTED:
8553                return mEditor != null && hasInsertionController();
8554
8555            case DragEvent.ACTION_DRAG_ENTERED:
8556                TextView.this.requestFocus();
8557                return true;
8558
8559            case DragEvent.ACTION_DRAG_LOCATION:
8560                final int offset = getOffsetForPosition(event.getX(), event.getY());
8561                Selection.setSelection((Spannable)mText, offset);
8562                return true;
8563
8564            case DragEvent.ACTION_DROP:
8565                onDrop(event);
8566                return true;
8567
8568            case DragEvent.ACTION_DRAG_ENDED:
8569            case DragEvent.ACTION_DRAG_EXITED:
8570            default:
8571                return true;
8572        }
8573    }
8574
8575    private void onDrop(DragEvent event) {
8576        StringBuilder content = new StringBuilder("");
8577        ClipData clipData = event.getClipData();
8578        final int itemCount = clipData.getItemCount();
8579        for (int i=0; i < itemCount; i++) {
8580            Item item = clipData.getItemAt(i);
8581            content.append(item.coerceToText(TextView.this.mContext));
8582        }
8583
8584        final int offset = getOffsetForPosition(event.getX(), event.getY());
8585
8586        Object localState = event.getLocalState();
8587        DragLocalState dragLocalState = null;
8588        if (localState instanceof DragLocalState) {
8589            dragLocalState = (DragLocalState) localState;
8590        }
8591        boolean dragDropIntoItself = dragLocalState != null &&
8592                dragLocalState.sourceTextView == this;
8593
8594        if (dragDropIntoItself) {
8595            if (offset >= dragLocalState.start && offset < dragLocalState.end) {
8596                // A drop inside the original selection discards the drop.
8597                return;
8598            }
8599        }
8600
8601        final int originalLength = mText.length();
8602        long minMax = prepareSpacesAroundPaste(offset, offset, content);
8603        int min = TextUtils.unpackRangeStartFromLong(minMax);
8604        int max = TextUtils.unpackRangeEndFromLong(minMax);
8605
8606        Selection.setSelection((Spannable) mText, max);
8607        replaceText_internal(min, max, content);
8608
8609        if (dragDropIntoItself) {
8610            int dragSourceStart = dragLocalState.start;
8611            int dragSourceEnd = dragLocalState.end;
8612            if (max <= dragSourceStart) {
8613                // Inserting text before selection has shifted positions
8614                final int shift = mText.length() - originalLength;
8615                dragSourceStart += shift;
8616                dragSourceEnd += shift;
8617            }
8618
8619            // Delete original selection
8620            deleteText_internal(dragSourceStart, dragSourceEnd);
8621
8622            // Make sure we do not leave two adjacent spaces.
8623            if ((dragSourceStart == 0 ||
8624                    Character.isSpaceChar(mTransformed.charAt(dragSourceStart - 1))) &&
8625                    (dragSourceStart == mText.length() ||
8626                    Character.isSpaceChar(mTransformed.charAt(dragSourceStart)))) {
8627                final int pos = dragSourceStart == mText.length() ?
8628                        dragSourceStart - 1 : dragSourceStart;
8629                deleteText_internal(pos, pos + 1);
8630            }
8631        }
8632    }
8633
8634    /**
8635     * @return True if this view supports insertion handles.
8636     */
8637    boolean hasInsertionController() {
8638        return getEditor().mInsertionControllerEnabled;
8639    }
8640
8641    /**
8642     * @return True if this view supports selection handles.
8643     */
8644    boolean hasSelectionController() {
8645        return getEditor().mSelectionControllerEnabled;
8646    }
8647
8648    InsertionPointCursorController getInsertionController() {
8649        if (!getEditor().mInsertionControllerEnabled) {
8650            return null;
8651        }
8652
8653        if (getEditor().mInsertionPointCursorController == null) {
8654            getEditor().mInsertionPointCursorController = new InsertionPointCursorController();
8655
8656            final ViewTreeObserver observer = getViewTreeObserver();
8657            observer.addOnTouchModeChangeListener(getEditor().mInsertionPointCursorController);
8658        }
8659
8660        return getEditor().mInsertionPointCursorController;
8661    }
8662
8663    SelectionModifierCursorController getSelectionController() {
8664        if (!getEditor().mSelectionControllerEnabled) {
8665            return null;
8666        }
8667
8668        if (getEditor().mSelectionModifierCursorController == null) {
8669            getEditor().mSelectionModifierCursorController = new SelectionModifierCursorController();
8670
8671            final ViewTreeObserver observer = getViewTreeObserver();
8672            observer.addOnTouchModeChangeListener(getEditor().mSelectionModifierCursorController);
8673        }
8674
8675        return getEditor().mSelectionModifierCursorController;
8676    }
8677
8678    boolean isInBatchEditMode() {
8679        if (mEditor == null) return false;
8680        final InputMethodState ims = getEditor().mInputMethodState;
8681        if (ims != null) {
8682            return ims.mBatchEditNesting > 0;
8683        }
8684        return getEditor().mInBatchEditControllers;
8685    }
8686
8687    @Override
8688    public void onResolvedTextDirectionChanged() {
8689        if (hasPasswordTransformationMethod()) {
8690            // TODO: take care of the content direction to show the password text and dots justified
8691            // to the left or to the right
8692            mTextDir = TextDirectionHeuristics.LOCALE;
8693            return;
8694        }
8695
8696        // Always need to resolve layout direction first
8697        final boolean defaultIsRtl = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL);
8698
8699        // Now, we can select the heuristic
8700        int textDir = getResolvedTextDirection();
8701        switch (textDir) {
8702            default:
8703            case TEXT_DIRECTION_FIRST_STRONG:
8704                mTextDir = (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
8705                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
8706                break;
8707            case TEXT_DIRECTION_ANY_RTL:
8708                mTextDir = TextDirectionHeuristics.ANYRTL_LTR;
8709                break;
8710            case TEXT_DIRECTION_LTR:
8711                mTextDir = TextDirectionHeuristics.LTR;
8712                break;
8713            case TEXT_DIRECTION_RTL:
8714                mTextDir = TextDirectionHeuristics.RTL;
8715                break;
8716            case TEXT_DIRECTION_LOCALE:
8717                mTextDir = TextDirectionHeuristics.LOCALE;
8718                break;
8719        }
8720    }
8721
8722    /**
8723     * Subclasses will need to override this method to implement their own way of resolving
8724     * drawables depending on the layout direction.
8725     *
8726     * A call to the super method will be required from the subclasses implementation.
8727     */
8728    protected void resolveDrawables() {
8729        // No need to resolve twice
8730        if (mResolvedDrawables) {
8731            return;
8732        }
8733        // No drawable to resolve
8734        if (mDrawables == null) {
8735            return;
8736        }
8737        // No relative drawable to resolve
8738        if (mDrawables.mDrawableStart == null && mDrawables.mDrawableEnd == null) {
8739            mResolvedDrawables = true;
8740            return;
8741        }
8742
8743        Drawables dr = mDrawables;
8744        switch(getResolvedLayoutDirection()) {
8745            case LAYOUT_DIRECTION_RTL:
8746                if (dr.mDrawableStart != null) {
8747                    dr.mDrawableRight = dr.mDrawableStart;
8748
8749                    dr.mDrawableSizeRight = dr.mDrawableSizeStart;
8750                    dr.mDrawableHeightRight = dr.mDrawableHeightStart;
8751                }
8752                if (dr.mDrawableEnd != null) {
8753                    dr.mDrawableLeft = dr.mDrawableEnd;
8754
8755                    dr.mDrawableSizeLeft = dr.mDrawableSizeEnd;
8756                    dr.mDrawableHeightLeft = dr.mDrawableHeightEnd;
8757                }
8758                break;
8759
8760            case LAYOUT_DIRECTION_LTR:
8761            default:
8762                if (dr.mDrawableStart != null) {
8763                    dr.mDrawableLeft = dr.mDrawableStart;
8764
8765                    dr.mDrawableSizeLeft = dr.mDrawableSizeStart;
8766                    dr.mDrawableHeightLeft = dr.mDrawableHeightStart;
8767                }
8768                if (dr.mDrawableEnd != null) {
8769                    dr.mDrawableRight = dr.mDrawableEnd;
8770
8771                    dr.mDrawableSizeRight = dr.mDrawableSizeEnd;
8772                    dr.mDrawableHeightRight = dr.mDrawableHeightEnd;
8773                }
8774                break;
8775        }
8776        mResolvedDrawables = true;
8777    }
8778
8779    protected void resetResolvedDrawables() {
8780        mResolvedDrawables = false;
8781    }
8782
8783    /**
8784     * @hide
8785     */
8786    protected void viewClicked(InputMethodManager imm) {
8787        if (imm != null) {
8788            imm.viewClicked(this);
8789        }
8790    }
8791
8792    /**
8793     * Deletes the range of text [start, end[.
8794     * @hide
8795     */
8796    protected void deleteText_internal(int start, int end) {
8797        ((Editable) mText).delete(start, end);
8798    }
8799
8800    /**
8801     * Replaces the range of text [start, end[ by replacement text
8802     * @hide
8803     */
8804    protected void replaceText_internal(int start, int end, CharSequence text) {
8805        ((Editable) mText).replace(start, end, text);
8806    }
8807
8808    /**
8809     * Sets a span on the specified range of text
8810     * @hide
8811     */
8812    protected void setSpan_internal(Object span, int start, int end, int flags) {
8813        ((Editable) mText).setSpan(span, start, end, flags);
8814    }
8815
8816    /**
8817     * Moves the cursor to the specified offset position in text
8818     * @hide
8819     */
8820    protected void setCursorPosition_internal(int start, int end) {
8821        Selection.setSelection(((Editable) mText), start, end);
8822    }
8823
8824    /**
8825     * An Editor should be created as soon as any of the editable-specific fields (grouped
8826     * inside the Editor object) is assigned to a non-default value.
8827     * This method will create the Editor if needed.
8828     *
8829     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
8830     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
8831     * Editor for backward compatibility, as soon as one of these fields is assigned.
8832     *
8833     * Also note that for performance reasons, the mEditor is created when needed, but not
8834     * reset when no more edit-specific fields are needed.
8835     */
8836    private void createEditorIfNeeded(String reason) {
8837        if (mEditor == null) {
8838            if (!(this instanceof EditText)) {
8839                Log.e(LOG_TAG + " EDITOR", "Creating Editor on TextView. " + reason);
8840            }
8841            mEditor = new Editor();
8842        } else {
8843            if (!(this instanceof EditText)) {
8844                Log.d(LOG_TAG + " EDITOR", "Redundant Editor creation. " + reason);
8845            }
8846        }
8847    }
8848
8849    private Editor getEditor() {
8850        if (mEditor == null) {
8851            //createEditorIfNeeded("Problem: mEditor is not initialized!");
8852            Log.e(LOG_TAG, "mEditor not initialized. Please send a bug report to debunne@");
8853        }
8854        return mEditor;
8855    }
8856
8857    /**
8858     * User interface state that is stored by TextView for implementing
8859     * {@link View#onSaveInstanceState}.
8860     */
8861    public static class SavedState extends BaseSavedState {
8862        int selStart;
8863        int selEnd;
8864        CharSequence text;
8865        boolean frozenWithFocus;
8866        CharSequence error;
8867
8868        SavedState(Parcelable superState) {
8869            super(superState);
8870        }
8871
8872        @Override
8873        public void writeToParcel(Parcel out, int flags) {
8874            super.writeToParcel(out, flags);
8875            out.writeInt(selStart);
8876            out.writeInt(selEnd);
8877            out.writeInt(frozenWithFocus ? 1 : 0);
8878            TextUtils.writeToParcel(text, out, flags);
8879
8880            if (error == null) {
8881                out.writeInt(0);
8882            } else {
8883                out.writeInt(1);
8884                TextUtils.writeToParcel(error, out, flags);
8885            }
8886        }
8887
8888        @Override
8889        public String toString() {
8890            String str = "TextView.SavedState{"
8891                    + Integer.toHexString(System.identityHashCode(this))
8892                    + " start=" + selStart + " end=" + selEnd;
8893            if (text != null) {
8894                str += " text=" + text;
8895            }
8896            return str + "}";
8897        }
8898
8899        @SuppressWarnings("hiding")
8900        public static final Parcelable.Creator<SavedState> CREATOR
8901                = new Parcelable.Creator<SavedState>() {
8902            public SavedState createFromParcel(Parcel in) {
8903                return new SavedState(in);
8904            }
8905
8906            public SavedState[] newArray(int size) {
8907                return new SavedState[size];
8908            }
8909        };
8910
8911        private SavedState(Parcel in) {
8912            super(in);
8913            selStart = in.readInt();
8914            selEnd = in.readInt();
8915            frozenWithFocus = (in.readInt() != 0);
8916            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8917
8918            if (in.readInt() != 0) {
8919                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8920            }
8921        }
8922    }
8923
8924    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
8925        private char[] mChars;
8926        private int mStart, mLength;
8927
8928        public CharWrapper(char[] chars, int start, int len) {
8929            mChars = chars;
8930            mStart = start;
8931            mLength = len;
8932        }
8933
8934        /* package */ void set(char[] chars, int start, int len) {
8935            mChars = chars;
8936            mStart = start;
8937            mLength = len;
8938        }
8939
8940        public int length() {
8941            return mLength;
8942        }
8943
8944        public char charAt(int off) {
8945            return mChars[off + mStart];
8946        }
8947
8948        @Override
8949        public String toString() {
8950            return new String(mChars, mStart, mLength);
8951        }
8952
8953        public CharSequence subSequence(int start, int end) {
8954            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8955                throw new IndexOutOfBoundsException(start + ", " + end);
8956            }
8957
8958            return new String(mChars, start + mStart, end - start);
8959        }
8960
8961        public void getChars(int start, int end, char[] buf, int off) {
8962            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8963                throw new IndexOutOfBoundsException(start + ", " + end);
8964            }
8965
8966            System.arraycopy(mChars, start + mStart, buf, off, end - start);
8967        }
8968
8969        public void drawText(Canvas c, int start, int end,
8970                             float x, float y, Paint p) {
8971            c.drawText(mChars, start + mStart, end - start, x, y, p);
8972        }
8973
8974        public void drawTextRun(Canvas c, int start, int end,
8975                int contextStart, int contextEnd, float x, float y, int flags, Paint p) {
8976            int count = end - start;
8977            int contextCount = contextEnd - contextStart;
8978            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
8979                    contextCount, x, y, flags, p);
8980        }
8981
8982        public float measureText(int start, int end, Paint p) {
8983            return p.measureText(mChars, start + mStart, end - start);
8984        }
8985
8986        public int getTextWidths(int start, int end, float[] widths, Paint p) {
8987            return p.getTextWidths(mChars, start + mStart, end - start, widths);
8988        }
8989
8990        public float getTextRunAdvances(int start, int end, int contextStart,
8991                int contextEnd, int flags, float[] advances, int advancesIndex,
8992                Paint p) {
8993            int count = end - start;
8994            int contextCount = contextEnd - contextStart;
8995            return p.getTextRunAdvances(mChars, start + mStart, count,
8996                    contextStart + mStart, contextCount, flags, advances,
8997                    advancesIndex);
8998        }
8999
9000        public float getTextRunAdvances(int start, int end, int contextStart,
9001                int contextEnd, int flags, float[] advances, int advancesIndex,
9002                Paint p, int reserved) {
9003            int count = end - start;
9004            int contextCount = contextEnd - contextStart;
9005            return p.getTextRunAdvances(mChars, start + mStart, count,
9006                    contextStart + mStart, contextCount, flags, advances,
9007                    advancesIndex, reserved);
9008        }
9009
9010        public int getTextRunCursor(int contextStart, int contextEnd, int flags,
9011                int offset, int cursorOpt, Paint p) {
9012            int contextCount = contextEnd - contextStart;
9013            return p.getTextRunCursor(mChars, contextStart + mStart,
9014                    contextCount, flags, offset + mStart, cursorOpt);
9015        }
9016    }
9017
9018    private static class ErrorPopup extends PopupWindow {
9019        private boolean mAbove = false;
9020        private final TextView mView;
9021        private int mPopupInlineErrorBackgroundId = 0;
9022        private int mPopupInlineErrorAboveBackgroundId = 0;
9023
9024        ErrorPopup(TextView v, int width, int height) {
9025            super(v, width, height);
9026            mView = v;
9027            // Make sure the TextView has a background set as it will be used the first time it is
9028            // shown and positionned. Initialized with below background, which should have
9029            // dimensions identical to the above version for this to work (and is more likely).
9030            mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId,
9031                    com.android.internal.R.styleable.Theme_errorMessageBackground);
9032            mView.setBackgroundResource(mPopupInlineErrorBackgroundId);
9033        }
9034
9035        void fixDirection(boolean above) {
9036            mAbove = above;
9037
9038            if (above) {
9039                mPopupInlineErrorAboveBackgroundId =
9040                    getResourceId(mPopupInlineErrorAboveBackgroundId,
9041                            com.android.internal.R.styleable.Theme_errorMessageAboveBackground);
9042            } else {
9043                mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId,
9044                        com.android.internal.R.styleable.Theme_errorMessageBackground);
9045            }
9046
9047            mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId :
9048                mPopupInlineErrorBackgroundId);
9049        }
9050
9051        private int getResourceId(int currentId, int index) {
9052            if (currentId == 0) {
9053                TypedArray styledAttributes = mView.getContext().obtainStyledAttributes(
9054                        R.styleable.Theme);
9055                currentId = styledAttributes.getResourceId(index, 0);
9056                styledAttributes.recycle();
9057            }
9058            return currentId;
9059        }
9060
9061        @Override
9062        public void update(int x, int y, int w, int h, boolean force) {
9063            super.update(x, y, w, h, force);
9064
9065            boolean above = isAboveAnchor();
9066            if (above != mAbove) {
9067                fixDirection(above);
9068            }
9069        }
9070    }
9071
9072    private class CorrectionHighlighter {
9073        private final Path mPath = new Path();
9074        private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
9075        private int mStart, mEnd;
9076        private long mFadingStartTime;
9077        private final static int FADE_OUT_DURATION = 400;
9078
9079        public CorrectionHighlighter() {
9080            mPaint.setCompatibilityScaling(getResources().getCompatibilityInfo().applicationScale);
9081            mPaint.setStyle(Paint.Style.FILL);
9082        }
9083
9084        public void highlight(CorrectionInfo info) {
9085            mStart = info.getOffset();
9086            mEnd = mStart + info.getNewText().length();
9087            mFadingStartTime = SystemClock.uptimeMillis();
9088
9089            if (mStart < 0 || mEnd < 0) {
9090                stopAnimation();
9091            }
9092        }
9093
9094        public void draw(Canvas canvas, int cursorOffsetVertical) {
9095            if (updatePath() && updatePaint()) {
9096                if (cursorOffsetVertical != 0) {
9097                    canvas.translate(0, cursorOffsetVertical);
9098                }
9099
9100                canvas.drawPath(mPath, mPaint);
9101
9102                if (cursorOffsetVertical != 0) {
9103                    canvas.translate(0, -cursorOffsetVertical);
9104                }
9105                invalidate(true); // TODO invalidate cursor region only
9106            } else {
9107                stopAnimation();
9108                invalidate(false); // TODO invalidate cursor region only
9109            }
9110        }
9111
9112        private boolean updatePaint() {
9113            final long duration = SystemClock.uptimeMillis() - mFadingStartTime;
9114            if (duration > FADE_OUT_DURATION) return false;
9115
9116            final float coef = 1.0f - (float) duration / FADE_OUT_DURATION;
9117            final int highlightColorAlpha = Color.alpha(mHighlightColor);
9118            final int color = (mHighlightColor & 0x00FFFFFF) +
9119                    ((int) (highlightColorAlpha * coef) << 24);
9120            mPaint.setColor(color);
9121            return true;
9122        }
9123
9124        private boolean updatePath() {
9125            final Layout layout = TextView.this.mLayout;
9126            if (layout == null) return false;
9127
9128            // Update in case text is edited while the animation is run
9129            final int length = mText.length();
9130            int start = Math.min(length, mStart);
9131            int end = Math.min(length, mEnd);
9132
9133            mPath.reset();
9134            TextView.this.mLayout.getSelectionPath(start, end, mPath);
9135            return true;
9136        }
9137
9138        private void invalidate(boolean delayed) {
9139            if (TextView.this.mLayout == null) return;
9140
9141            synchronized (TEMP_RECTF) {
9142                mPath.computeBounds(TEMP_RECTF, false);
9143
9144                int left = getCompoundPaddingLeft();
9145                int top = getExtendedPaddingTop() + getVerticalOffset(true);
9146
9147                if (delayed) {
9148                    TextView.this.postInvalidateOnAnimation(
9149                            left + (int) TEMP_RECTF.left, top + (int) TEMP_RECTF.top,
9150                            left + (int) TEMP_RECTF.right, top + (int) TEMP_RECTF.bottom);
9151                } else {
9152                    TextView.this.postInvalidate((int) TEMP_RECTF.left, (int) TEMP_RECTF.top,
9153                            (int) TEMP_RECTF.right, (int) TEMP_RECTF.bottom);
9154                }
9155            }
9156        }
9157
9158        private void stopAnimation() {
9159            TextView.this.getEditor().mCorrectionHighlighter = null;
9160        }
9161    }
9162
9163    private static final class Marquee extends Handler {
9164        // TODO: Add an option to configure this
9165        private static final float MARQUEE_DELTA_MAX = 0.07f;
9166        private static final int MARQUEE_DELAY = 1200;
9167        private static final int MARQUEE_RESTART_DELAY = 1200;
9168        private static final int MARQUEE_RESOLUTION = 1000 / 30;
9169        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
9170
9171        private static final byte MARQUEE_STOPPED = 0x0;
9172        private static final byte MARQUEE_STARTING = 0x1;
9173        private static final byte MARQUEE_RUNNING = 0x2;
9174
9175        private static final int MESSAGE_START = 0x1;
9176        private static final int MESSAGE_TICK = 0x2;
9177        private static final int MESSAGE_RESTART = 0x3;
9178
9179        private final WeakReference<TextView> mView;
9180
9181        private byte mStatus = MARQUEE_STOPPED;
9182        private final float mScrollUnit;
9183        private float mMaxScroll;
9184        float mMaxFadeScroll;
9185        private float mGhostStart;
9186        private float mGhostOffset;
9187        private float mFadeStop;
9188        private int mRepeatLimit;
9189
9190        float mScroll;
9191
9192        Marquee(TextView v) {
9193            final float density = v.getContext().getResources().getDisplayMetrics().density;
9194            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / MARQUEE_RESOLUTION;
9195            mView = new WeakReference<TextView>(v);
9196        }
9197
9198        @Override
9199        public void handleMessage(Message msg) {
9200            switch (msg.what) {
9201                case MESSAGE_START:
9202                    mStatus = MARQUEE_RUNNING;
9203                    tick();
9204                    break;
9205                case MESSAGE_TICK:
9206                    tick();
9207                    break;
9208                case MESSAGE_RESTART:
9209                    if (mStatus == MARQUEE_RUNNING) {
9210                        if (mRepeatLimit >= 0) {
9211                            mRepeatLimit--;
9212                        }
9213                        start(mRepeatLimit);
9214                    }
9215                    break;
9216            }
9217        }
9218
9219        void tick() {
9220            if (mStatus != MARQUEE_RUNNING) {
9221                return;
9222            }
9223
9224            removeMessages(MESSAGE_TICK);
9225
9226            final TextView textView = mView.get();
9227            if (textView != null && (textView.isFocused() || textView.isSelected())) {
9228                mScroll += mScrollUnit;
9229                if (mScroll > mMaxScroll) {
9230                    mScroll = mMaxScroll;
9231                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
9232                } else {
9233                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
9234                }
9235                textView.invalidate();
9236            }
9237        }
9238
9239        void stop() {
9240            mStatus = MARQUEE_STOPPED;
9241            removeMessages(MESSAGE_START);
9242            removeMessages(MESSAGE_RESTART);
9243            removeMessages(MESSAGE_TICK);
9244            resetScroll();
9245        }
9246
9247        private void resetScroll() {
9248            mScroll = 0.0f;
9249            final TextView textView = mView.get();
9250            if (textView != null) textView.invalidate();
9251        }
9252
9253        void start(int repeatLimit) {
9254            if (repeatLimit == 0) {
9255                stop();
9256                return;
9257            }
9258            mRepeatLimit = repeatLimit;
9259            final TextView textView = mView.get();
9260            if (textView != null && textView.mLayout != null) {
9261                mStatus = MARQUEE_STARTING;
9262                mScroll = 0.0f;
9263                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
9264                        textView.getCompoundPaddingRight();
9265                final float lineWidth = textView.mLayout.getLineWidth(0);
9266                final float gap = textWidth / 3.0f;
9267                mGhostStart = lineWidth - textWidth + gap;
9268                mMaxScroll = mGhostStart + textWidth;
9269                mGhostOffset = lineWidth + gap;
9270                mFadeStop = lineWidth + textWidth / 6.0f;
9271                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
9272
9273                textView.invalidate();
9274                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
9275            }
9276        }
9277
9278        float getGhostOffset() {
9279            return mGhostOffset;
9280        }
9281
9282        boolean shouldDrawLeftFade() {
9283            return mScroll <= mFadeStop;
9284        }
9285
9286        boolean shouldDrawGhost() {
9287            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
9288        }
9289
9290        boolean isRunning() {
9291            return mStatus == MARQUEE_RUNNING;
9292        }
9293
9294        boolean isStopped() {
9295            return mStatus == MARQUEE_STOPPED;
9296        }
9297    }
9298
9299    /**
9300     * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related
9301     * pop-up should be displayed.
9302     */
9303    private class EasyEditSpanController {
9304
9305        private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs
9306
9307        private EasyEditPopupWindow mPopupWindow;
9308
9309        private EasyEditSpan mEasyEditSpan;
9310
9311        private Runnable mHidePopup;
9312
9313        private void hide() {
9314            if (mPopupWindow != null) {
9315                mPopupWindow.hide();
9316                TextView.this.removeCallbacks(mHidePopup);
9317            }
9318            removeSpans(mText);
9319            mEasyEditSpan = null;
9320        }
9321
9322        /**
9323         * Monitors the changes in the text.
9324         *
9325         * <p>{@link ChangeWatcher#onSpanAdded(Spannable, Object, int, int)} cannot be used,
9326         * as the notifications are not sent when a spannable (with spans) is inserted.
9327         */
9328        public void onTextChange(CharSequence buffer) {
9329            adjustSpans(mText);
9330
9331            if (getWindowVisibility() != View.VISIBLE) {
9332                // The window is not visible yet, ignore the text change.
9333                return;
9334            }
9335
9336            if (mLayout == null) {
9337                // The view has not been layout yet, ignore the text change
9338                return;
9339            }
9340
9341            InputMethodManager imm = InputMethodManager.peekInstance();
9342            if (!(TextView.this instanceof ExtractEditText)
9343                    && imm != null && imm.isFullscreenMode()) {
9344                // The input is in extract mode. We do not have to handle the easy edit in the
9345                // original TextView, as the ExtractEditText will do
9346                return;
9347            }
9348
9349            // Remove the current easy edit span, as the text changed, and remove the pop-up
9350            // (if any)
9351            if (mEasyEditSpan != null) {
9352                if (mText instanceof Spannable) {
9353                    ((Spannable) mText).removeSpan(mEasyEditSpan);
9354                }
9355                mEasyEditSpan = null;
9356            }
9357            if (mPopupWindow != null && mPopupWindow.isShowing()) {
9358                mPopupWindow.hide();
9359            }
9360
9361            // Display the new easy edit span (if any).
9362            if (buffer instanceof Spanned) {
9363                mEasyEditSpan = getSpan((Spanned) buffer);
9364                if (mEasyEditSpan != null) {
9365                    if (mPopupWindow == null) {
9366                        mPopupWindow = new EasyEditPopupWindow();
9367                        mHidePopup = new Runnable() {
9368                            @Override
9369                            public void run() {
9370                                hide();
9371                            }
9372                        };
9373                    }
9374                    mPopupWindow.show(mEasyEditSpan);
9375                    TextView.this.removeCallbacks(mHidePopup);
9376                    TextView.this.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS);
9377                }
9378            }
9379        }
9380
9381        /**
9382         * Adjusts the spans by removing all of them except the last one.
9383         */
9384        private void adjustSpans(CharSequence buffer) {
9385            // This method enforces that only one easy edit span is attached to the text.
9386            // A better way to enforce this would be to listen for onSpanAdded, but this method
9387            // cannot be used in this scenario as no notification is triggered when a text with
9388            // spans is inserted into a text.
9389            if (buffer instanceof Spannable) {
9390                Spannable spannable = (Spannable) buffer;
9391                EasyEditSpan[] spans = spannable.getSpans(0, spannable.length(),
9392                        EasyEditSpan.class);
9393                for (int i = 0; i < spans.length - 1; i++) {
9394                    spannable.removeSpan(spans[i]);
9395                }
9396            }
9397        }
9398
9399        /**
9400         * Removes all the {@link EasyEditSpan} currently attached.
9401         */
9402        private void removeSpans(CharSequence buffer) {
9403            if (buffer instanceof Spannable) {
9404                Spannable spannable = (Spannable) buffer;
9405                EasyEditSpan[] spans = spannable.getSpans(0, spannable.length(),
9406                        EasyEditSpan.class);
9407                for (int i = 0; i < spans.length; i++) {
9408                    spannable.removeSpan(spans[i]);
9409                }
9410            }
9411        }
9412
9413        private EasyEditSpan getSpan(Spanned spanned) {
9414            EasyEditSpan[] easyEditSpans = spanned.getSpans(0, spanned.length(),
9415                    EasyEditSpan.class);
9416            if (easyEditSpans.length == 0) {
9417                return null;
9418            } else {
9419                return easyEditSpans[0];
9420            }
9421        }
9422    }
9423
9424    /**
9425     * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled
9426     * by {@link EasyEditSpanController}.
9427     */
9428    private class EasyEditPopupWindow extends PinnedPopupWindow
9429            implements OnClickListener {
9430        private static final int POPUP_TEXT_LAYOUT =
9431                com.android.internal.R.layout.text_edit_action_popup_text;
9432        private TextView mDeleteTextView;
9433        private EasyEditSpan mEasyEditSpan;
9434
9435        @Override
9436        protected void createPopupWindow() {
9437            mPopupWindow = new PopupWindow(TextView.this.mContext, null,
9438                    com.android.internal.R.attr.textSelectHandleWindowStyle);
9439            mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED);
9440            mPopupWindow.setClippingEnabled(true);
9441        }
9442
9443        @Override
9444        protected void initContentView() {
9445            LinearLayout linearLayout = new LinearLayout(TextView.this.getContext());
9446            linearLayout.setOrientation(LinearLayout.HORIZONTAL);
9447            mContentView = linearLayout;
9448            mContentView.setBackgroundResource(
9449                    com.android.internal.R.drawable.text_edit_side_paste_window);
9450
9451            LayoutInflater inflater = (LayoutInflater)TextView.this.mContext.
9452                    getSystemService(Context.LAYOUT_INFLATER_SERVICE);
9453
9454            LayoutParams wrapContent = new LayoutParams(
9455                    ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
9456
9457            mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null);
9458            mDeleteTextView.setLayoutParams(wrapContent);
9459            mDeleteTextView.setText(com.android.internal.R.string.delete);
9460            mDeleteTextView.setOnClickListener(this);
9461            mContentView.addView(mDeleteTextView);
9462        }
9463
9464        public void show(EasyEditSpan easyEditSpan) {
9465            mEasyEditSpan = easyEditSpan;
9466            super.show();
9467        }
9468
9469        @Override
9470        public void onClick(View view) {
9471            if (view == mDeleteTextView) {
9472                Editable editable = (Editable) mText;
9473                int start = editable.getSpanStart(mEasyEditSpan);
9474                int end = editable.getSpanEnd(mEasyEditSpan);
9475                if (start >= 0 && end >= 0) {
9476                    deleteText_internal(start, end);
9477                }
9478            }
9479        }
9480
9481        @Override
9482        protected int getTextOffset() {
9483            // Place the pop-up at the end of the span
9484            Editable editable = (Editable) mText;
9485            return editable.getSpanEnd(mEasyEditSpan);
9486        }
9487
9488        @Override
9489        protected int getVerticalLocalPosition(int line) {
9490            return mLayout.getLineBottom(line);
9491        }
9492
9493        @Override
9494        protected int clipVertically(int positionY) {
9495            // As we display the pop-up below the span, no vertical clipping is required.
9496            return positionY;
9497        }
9498    }
9499
9500    private class ChangeWatcher implements TextWatcher, SpanWatcher {
9501
9502        private CharSequence mBeforeText;
9503
9504        private EasyEditSpanController mEasyEditSpanController;
9505
9506        private ChangeWatcher() {
9507            mEasyEditSpanController = new EasyEditSpanController();
9508        }
9509
9510        public void beforeTextChanged(CharSequence buffer, int start,
9511                                      int before, int after) {
9512            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
9513                    + " before=" + before + " after=" + after + ": " + buffer);
9514
9515            if (AccessibilityManager.getInstance(mContext).isEnabled()
9516                    && !isPasswordInputType(getInputType())
9517                    && !hasPasswordTransformationMethod()) {
9518                mBeforeText = buffer.toString();
9519            }
9520
9521            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
9522        }
9523
9524        public void onTextChanged(CharSequence buffer, int start,
9525                                  int before, int after) {
9526            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
9527                    + " before=" + before + " after=" + after + ": " + buffer);
9528            TextView.this.handleTextChanged(buffer, start, before, after);
9529
9530            mEasyEditSpanController.onTextChange(buffer);
9531
9532            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
9533                    (isFocused() || isSelected() && isShown())) {
9534                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
9535                mBeforeText = null;
9536            }
9537        }
9538
9539        public void afterTextChanged(Editable buffer) {
9540            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
9541            TextView.this.sendAfterTextChanged(buffer);
9542
9543            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
9544                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
9545            }
9546        }
9547
9548        public void onSpanChanged(Spannable buf,
9549                                  Object what, int s, int e, int st, int en) {
9550            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
9551                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
9552            TextView.this.spanChange(buf, what, s, st, e, en);
9553        }
9554
9555        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
9556            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
9557                    + " what=" + what + ": " + buf);
9558            TextView.this.spanChange(buf, what, -1, s, -1, e);
9559        }
9560
9561        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
9562            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
9563                    + " what=" + what + ": " + buf);
9564            TextView.this.spanChange(buf, what, s, -1, e, -1);
9565        }
9566
9567        private void hideControllers() {
9568            mEasyEditSpanController.hide();
9569        }
9570    }
9571
9572    private static class Blink extends Handler implements Runnable {
9573        private final WeakReference<TextView> mView;
9574        private boolean mCancelled;
9575
9576        public Blink(TextView v) {
9577            mView = new WeakReference<TextView>(v);
9578        }
9579
9580        public void run() {
9581            if (mCancelled) {
9582                return;
9583            }
9584
9585            removeCallbacks(Blink.this);
9586
9587            TextView tv = mView.get();
9588
9589            if (tv != null && tv.shouldBlink()) {
9590                if (tv.mLayout != null) {
9591                    tv.invalidateCursorPath();
9592                }
9593
9594                postAtTime(this, SystemClock.uptimeMillis() + BLINK);
9595            }
9596        }
9597
9598        void cancel() {
9599            if (!mCancelled) {
9600                removeCallbacks(Blink.this);
9601                mCancelled = true;
9602            }
9603        }
9604
9605        void uncancel() {
9606            mCancelled = false;
9607        }
9608    }
9609
9610    private static class DragLocalState {
9611        public TextView sourceTextView;
9612        public int start, end;
9613
9614        public DragLocalState(TextView sourceTextView, int start, int end) {
9615            this.sourceTextView = sourceTextView;
9616            this.start = start;
9617            this.end = end;
9618        }
9619    }
9620
9621    private class PositionListener implements ViewTreeObserver.OnPreDrawListener {
9622        // 3 handles
9623        // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others)
9624        private final int MAXIMUM_NUMBER_OF_LISTENERS = 6;
9625        private TextViewPositionListener[] mPositionListeners =
9626                new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS];
9627        private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS];
9628        private boolean mPositionHasChanged = true;
9629        // Absolute position of the TextView with respect to its parent window
9630        private int mPositionX, mPositionY;
9631        private int mNumberOfListeners;
9632        private boolean mScrollHasChanged;
9633        final int[] mTempCoords = new int[2];
9634
9635        public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) {
9636            if (mNumberOfListeners == 0) {
9637                updatePosition();
9638                ViewTreeObserver vto = TextView.this.getViewTreeObserver();
9639                vto.addOnPreDrawListener(this);
9640            }
9641
9642            int emptySlotIndex = -1;
9643            for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) {
9644                TextViewPositionListener listener = mPositionListeners[i];
9645                if (listener == positionListener) {
9646                    return;
9647                } else if (emptySlotIndex < 0 && listener == null) {
9648                    emptySlotIndex = i;
9649                }
9650            }
9651
9652            mPositionListeners[emptySlotIndex] = positionListener;
9653            mCanMove[emptySlotIndex] = canMove;
9654            mNumberOfListeners++;
9655        }
9656
9657        public void removeSubscriber(TextViewPositionListener positionListener) {
9658            for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) {
9659                if (mPositionListeners[i] == positionListener) {
9660                    mPositionListeners[i] = null;
9661                    mNumberOfListeners--;
9662                    break;
9663                }
9664            }
9665
9666            if (mNumberOfListeners == 0) {
9667                ViewTreeObserver vto = TextView.this.getViewTreeObserver();
9668                vto.removeOnPreDrawListener(this);
9669            }
9670        }
9671
9672        public int getPositionX() {
9673            return mPositionX;
9674        }
9675
9676        public int getPositionY() {
9677            return mPositionY;
9678        }
9679
9680        @Override
9681        public boolean onPreDraw() {
9682            updatePosition();
9683
9684            for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) {
9685                if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) {
9686                    TextViewPositionListener positionListener = mPositionListeners[i];
9687                    if (positionListener != null) {
9688                        positionListener.updatePosition(mPositionX, mPositionY,
9689                                mPositionHasChanged, mScrollHasChanged);
9690                    }
9691                }
9692            }
9693
9694            mScrollHasChanged = false;
9695            return true;
9696        }
9697
9698        private void updatePosition() {
9699            TextView.this.getLocationInWindow(mTempCoords);
9700
9701            mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY;
9702
9703            mPositionX = mTempCoords[0];
9704            mPositionY = mTempCoords[1];
9705        }
9706
9707        public void onScrollChanged() {
9708            mScrollHasChanged = true;
9709        }
9710    }
9711
9712    private abstract class PinnedPopupWindow implements TextViewPositionListener {
9713        protected PopupWindow mPopupWindow;
9714        protected ViewGroup mContentView;
9715        int mPositionX, mPositionY;
9716
9717        protected abstract void createPopupWindow();
9718        protected abstract void initContentView();
9719        protected abstract int getTextOffset();
9720        protected abstract int getVerticalLocalPosition(int line);
9721        protected abstract int clipVertically(int positionY);
9722
9723        public PinnedPopupWindow() {
9724            createPopupWindow();
9725
9726            mPopupWindow.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL);
9727            mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
9728            mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
9729
9730            initContentView();
9731
9732            LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
9733                    ViewGroup.LayoutParams.WRAP_CONTENT);
9734            mContentView.setLayoutParams(wrapContent);
9735
9736            mPopupWindow.setContentView(mContentView);
9737        }
9738
9739        public void show() {
9740            TextView.this.getPositionListener().addSubscriber(this, false /* offset is fixed */);
9741
9742            computeLocalPosition();
9743
9744            final PositionListener positionListener = TextView.this.getPositionListener();
9745            updatePosition(positionListener.getPositionX(), positionListener.getPositionY());
9746        }
9747
9748        protected void measureContent() {
9749            final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
9750            mContentView.measure(
9751                    View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels,
9752                            View.MeasureSpec.AT_MOST),
9753                    View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels,
9754                            View.MeasureSpec.AT_MOST));
9755        }
9756
9757        /* The popup window will be horizontally centered on the getTextOffset() and vertically
9758         * positioned according to viewportToContentHorizontalOffset.
9759         *
9760         * This method assumes that mContentView has properly been measured from its content. */
9761        private void computeLocalPosition() {
9762            measureContent();
9763            final int width = mContentView.getMeasuredWidth();
9764            final int offset = getTextOffset();
9765            mPositionX = (int) (mLayout.getPrimaryHorizontal(offset) - width / 2.0f);
9766            mPositionX += viewportToContentHorizontalOffset();
9767
9768            final int line = mLayout.getLineForOffset(offset);
9769            mPositionY = getVerticalLocalPosition(line);
9770            mPositionY += viewportToContentVerticalOffset();
9771        }
9772
9773        private void updatePosition(int parentPositionX, int parentPositionY) {
9774            int positionX = parentPositionX + mPositionX;
9775            int positionY = parentPositionY + mPositionY;
9776
9777            positionY = clipVertically(positionY);
9778
9779            // Horizontal clipping
9780            final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
9781            final int width = mContentView.getMeasuredWidth();
9782            positionX = Math.min(displayMetrics.widthPixels - width, positionX);
9783            positionX = Math.max(0, positionX);
9784
9785            if (isShowing()) {
9786                mPopupWindow.update(positionX, positionY, -1, -1);
9787            } else {
9788                mPopupWindow.showAtLocation(TextView.this, Gravity.NO_GRAVITY,
9789                        positionX, positionY);
9790            }
9791        }
9792
9793        public void hide() {
9794            mPopupWindow.dismiss();
9795            TextView.this.getPositionListener().removeSubscriber(this);
9796        }
9797
9798        @Override
9799        public void updatePosition(int parentPositionX, int parentPositionY,
9800                boolean parentPositionChanged, boolean parentScrolled) {
9801            // Either parentPositionChanged or parentScrolled is true, check if still visible
9802            if (isShowing() && isOffsetVisible(getTextOffset())) {
9803                if (parentScrolled) computeLocalPosition();
9804                updatePosition(parentPositionX, parentPositionY);
9805            } else {
9806                hide();
9807            }
9808        }
9809
9810        public boolean isShowing() {
9811            return mPopupWindow.isShowing();
9812        }
9813    }
9814
9815    private class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener {
9816        private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE;
9817        private static final int ADD_TO_DICTIONARY = -1;
9818        private static final int DELETE_TEXT = -2;
9819        private SuggestionInfo[] mSuggestionInfos;
9820        private int mNumberOfSuggestions;
9821        private boolean mCursorWasVisibleBeforeSuggestions;
9822        private boolean mIsShowingUp = false;
9823        private SuggestionAdapter mSuggestionsAdapter;
9824        private final Comparator<SuggestionSpan> mSuggestionSpanComparator;
9825        private final HashMap<SuggestionSpan, Integer> mSpansLengths;
9826
9827        private class CustomPopupWindow extends PopupWindow {
9828            public CustomPopupWindow(Context context, int defStyle) {
9829                super(context, null, defStyle);
9830            }
9831
9832            @Override
9833            public void dismiss() {
9834                super.dismiss();
9835
9836                TextView.this.getPositionListener().removeSubscriber(SuggestionsPopupWindow.this);
9837
9838                // Safe cast since show() checks that mText is an Editable
9839                ((Spannable) mText).removeSpan(getEditor().mSuggestionRangeSpan);
9840
9841                setCursorVisible(mCursorWasVisibleBeforeSuggestions);
9842                if (hasInsertionController()) {
9843                    getInsertionController().show();
9844                }
9845            }
9846        }
9847
9848        public SuggestionsPopupWindow() {
9849            mCursorWasVisibleBeforeSuggestions = getEditor().mCursorVisible;
9850            mSuggestionSpanComparator = new SuggestionSpanComparator();
9851            mSpansLengths = new HashMap<SuggestionSpan, Integer>();
9852        }
9853
9854        @Override
9855        protected void createPopupWindow() {
9856            mPopupWindow = new CustomPopupWindow(TextView.this.mContext,
9857                com.android.internal.R.attr.textSuggestionsWindowStyle);
9858            mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED);
9859            mPopupWindow.setFocusable(true);
9860            mPopupWindow.setClippingEnabled(false);
9861        }
9862
9863        @Override
9864        protected void initContentView() {
9865            ListView listView = new ListView(TextView.this.getContext());
9866            mSuggestionsAdapter = new SuggestionAdapter();
9867            listView.setAdapter(mSuggestionsAdapter);
9868            listView.setOnItemClickListener(this);
9869            mContentView = listView;
9870
9871            // Inflate the suggestion items once and for all. + 2 for add to dictionary and delete
9872            mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS + 2];
9873            for (int i = 0; i < mSuggestionInfos.length; i++) {
9874                mSuggestionInfos[i] = new SuggestionInfo();
9875            }
9876        }
9877
9878        public boolean isShowingUp() {
9879            return mIsShowingUp;
9880        }
9881
9882        public void onParentLostFocus() {
9883            mIsShowingUp = false;
9884        }
9885
9886        private class SuggestionInfo {
9887            int suggestionStart, suggestionEnd; // range of actual suggestion within text
9888            SuggestionSpan suggestionSpan; // the SuggestionSpan that this TextView represents
9889            int suggestionIndex; // the index of this suggestion inside suggestionSpan
9890            SpannableStringBuilder text = new SpannableStringBuilder();
9891            TextAppearanceSpan highlightSpan = new TextAppearanceSpan(mContext,
9892                    android.R.style.TextAppearance_SuggestionHighlight);
9893        }
9894
9895        private class SuggestionAdapter extends BaseAdapter {
9896            private LayoutInflater mInflater = (LayoutInflater) TextView.this.mContext.
9897                    getSystemService(Context.LAYOUT_INFLATER_SERVICE);
9898
9899            @Override
9900            public int getCount() {
9901                return mNumberOfSuggestions;
9902            }
9903
9904            @Override
9905            public Object getItem(int position) {
9906                return mSuggestionInfos[position];
9907            }
9908
9909            @Override
9910            public long getItemId(int position) {
9911                return position;
9912            }
9913
9914            @Override
9915            public View getView(int position, View convertView, ViewGroup parent) {
9916                TextView textView = (TextView) convertView;
9917
9918                if (textView == null) {
9919                    textView = (TextView) mInflater.inflate(mTextEditSuggestionItemLayout, parent,
9920                            false);
9921                }
9922
9923                final SuggestionInfo suggestionInfo = mSuggestionInfos[position];
9924                textView.setText(suggestionInfo.text);
9925
9926                if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY) {
9927                    textView.setCompoundDrawablesWithIntrinsicBounds(
9928                            com.android.internal.R.drawable.ic_suggestions_add, 0, 0, 0);
9929                } else if (suggestionInfo.suggestionIndex == DELETE_TEXT) {
9930                    textView.setCompoundDrawablesWithIntrinsicBounds(
9931                            com.android.internal.R.drawable.ic_suggestions_delete, 0, 0, 0);
9932                } else {
9933                    textView.setCompoundDrawables(null, null, null, null);
9934                }
9935
9936                return textView;
9937            }
9938        }
9939
9940        private class SuggestionSpanComparator implements Comparator<SuggestionSpan> {
9941            public int compare(SuggestionSpan span1, SuggestionSpan span2) {
9942                final int flag1 = span1.getFlags();
9943                final int flag2 = span2.getFlags();
9944                if (flag1 != flag2) {
9945                    // The order here should match what is used in updateDrawState
9946                    final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0;
9947                    final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0;
9948                    final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0;
9949                    final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0;
9950                    if (easy1 && !misspelled1) return -1;
9951                    if (easy2 && !misspelled2) return 1;
9952                    if (misspelled1) return -1;
9953                    if (misspelled2) return 1;
9954                }
9955
9956                return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue();
9957            }
9958        }
9959
9960        /**
9961         * Returns the suggestion spans that cover the current cursor position. The suggestion
9962         * spans are sorted according to the length of text that they are attached to.
9963         */
9964        private SuggestionSpan[] getSuggestionSpans() {
9965            int pos = TextView.this.getSelectionStart();
9966            Spannable spannable = (Spannable) TextView.this.mText;
9967            SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class);
9968
9969            mSpansLengths.clear();
9970            for (SuggestionSpan suggestionSpan : suggestionSpans) {
9971                int start = spannable.getSpanStart(suggestionSpan);
9972                int end = spannable.getSpanEnd(suggestionSpan);
9973                mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start));
9974            }
9975
9976            // The suggestions are sorted according to their types (easy correction first, then
9977            // misspelled) and to the length of the text that they cover (shorter first).
9978            Arrays.sort(suggestionSpans, mSuggestionSpanComparator);
9979            return suggestionSpans;
9980        }
9981
9982        @Override
9983        public void show() {
9984            if (!(mText instanceof Editable)) return;
9985
9986            if (updateSuggestions()) {
9987                mCursorWasVisibleBeforeSuggestions = getEditor().mCursorVisible;
9988                setCursorVisible(false);
9989                mIsShowingUp = true;
9990                super.show();
9991            }
9992        }
9993
9994        @Override
9995        protected void measureContent() {
9996            final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
9997            final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec(
9998                    displayMetrics.widthPixels, View.MeasureSpec.AT_MOST);
9999            final int verticalMeasure = View.MeasureSpec.makeMeasureSpec(
10000                    displayMetrics.heightPixels, View.MeasureSpec.AT_MOST);
10001
10002            int width = 0;
10003            View view = null;
10004            for (int i = 0; i < mNumberOfSuggestions; i++) {
10005                view = mSuggestionsAdapter.getView(i, view, mContentView);
10006                view.getLayoutParams().width = LayoutParams.WRAP_CONTENT;
10007                view.measure(horizontalMeasure, verticalMeasure);
10008                width = Math.max(width, view.getMeasuredWidth());
10009            }
10010
10011            // Enforce the width based on actual text widths
10012            mContentView.measure(
10013                    View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY),
10014                    verticalMeasure);
10015
10016            Drawable popupBackground = mPopupWindow.getBackground();
10017            if (popupBackground != null) {
10018                if (mTempRect == null) mTempRect = new Rect();
10019                popupBackground.getPadding(mTempRect);
10020                width += mTempRect.left + mTempRect.right;
10021            }
10022            mPopupWindow.setWidth(width);
10023        }
10024
10025        @Override
10026        protected int getTextOffset() {
10027            return getSelectionStart();
10028        }
10029
10030        @Override
10031        protected int getVerticalLocalPosition(int line) {
10032            return mLayout.getLineBottom(line);
10033        }
10034
10035        @Override
10036        protected int clipVertically(int positionY) {
10037            final int height = mContentView.getMeasuredHeight();
10038            final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
10039            return Math.min(positionY, displayMetrics.heightPixels - height);
10040        }
10041
10042        @Override
10043        public void hide() {
10044            super.hide();
10045        }
10046
10047        private boolean updateSuggestions() {
10048            Spannable spannable = (Spannable) TextView.this.mText;
10049            SuggestionSpan[] suggestionSpans = getSuggestionSpans();
10050
10051            final int nbSpans = suggestionSpans.length;
10052            // Suggestions are shown after a delay: the underlying spans may have been removed
10053            if (nbSpans == 0) return false;
10054
10055            mNumberOfSuggestions = 0;
10056            int spanUnionStart = mText.length();
10057            int spanUnionEnd = 0;
10058
10059            SuggestionSpan misspelledSpan = null;
10060            int underlineColor = 0;
10061
10062            for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) {
10063                SuggestionSpan suggestionSpan = suggestionSpans[spanIndex];
10064                final int spanStart = spannable.getSpanStart(suggestionSpan);
10065                final int spanEnd = spannable.getSpanEnd(suggestionSpan);
10066                spanUnionStart = Math.min(spanStart, spanUnionStart);
10067                spanUnionEnd = Math.max(spanEnd, spanUnionEnd);
10068
10069                if ((suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) {
10070                    misspelledSpan = suggestionSpan;
10071                }
10072
10073                // The first span dictates the background color of the highlighted text
10074                if (spanIndex == 0) underlineColor = suggestionSpan.getUnderlineColor();
10075
10076                String[] suggestions = suggestionSpan.getSuggestions();
10077                int nbSuggestions = suggestions.length;
10078                for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) {
10079                    String suggestion = suggestions[suggestionIndex];
10080
10081                    boolean suggestionIsDuplicate = false;
10082                    for (int i = 0; i < mNumberOfSuggestions; i++) {
10083                        if (mSuggestionInfos[i].text.toString().equals(suggestion)) {
10084                            SuggestionSpan otherSuggestionSpan = mSuggestionInfos[i].suggestionSpan;
10085                            final int otherSpanStart = spannable.getSpanStart(otherSuggestionSpan);
10086                            final int otherSpanEnd = spannable.getSpanEnd(otherSuggestionSpan);
10087                            if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) {
10088                                suggestionIsDuplicate = true;
10089                                break;
10090                            }
10091                        }
10092                    }
10093
10094                    if (!suggestionIsDuplicate) {
10095                        SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions];
10096                        suggestionInfo.suggestionSpan = suggestionSpan;
10097                        suggestionInfo.suggestionIndex = suggestionIndex;
10098                        suggestionInfo.text.replace(0, suggestionInfo.text.length(), suggestion);
10099
10100                        mNumberOfSuggestions++;
10101
10102                        if (mNumberOfSuggestions == MAX_NUMBER_SUGGESTIONS) {
10103                            // Also end outer for loop
10104                            spanIndex = nbSpans;
10105                            break;
10106                        }
10107                    }
10108                }
10109            }
10110
10111            for (int i = 0; i < mNumberOfSuggestions; i++) {
10112                highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd);
10113            }
10114
10115            // Add "Add to dictionary" item if there is a span with the misspelled flag
10116            if (misspelledSpan != null) {
10117                final int misspelledStart = spannable.getSpanStart(misspelledSpan);
10118                final int misspelledEnd = spannable.getSpanEnd(misspelledSpan);
10119                if (misspelledStart >= 0 && misspelledEnd > misspelledStart) {
10120                    SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions];
10121                    suggestionInfo.suggestionSpan = misspelledSpan;
10122                    suggestionInfo.suggestionIndex = ADD_TO_DICTIONARY;
10123                    suggestionInfo.text.replace(0, suggestionInfo.text.length(),
10124                            getContext().getString(com.android.internal.R.string.addToDictionary));
10125                    suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0,
10126                            Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
10127
10128                    mNumberOfSuggestions++;
10129                }
10130            }
10131
10132            // Delete item
10133            SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions];
10134            suggestionInfo.suggestionSpan = null;
10135            suggestionInfo.suggestionIndex = DELETE_TEXT;
10136            suggestionInfo.text.replace(0, suggestionInfo.text.length(),
10137                    getContext().getString(com.android.internal.R.string.deleteText));
10138            suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0,
10139                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
10140            mNumberOfSuggestions++;
10141
10142            if (getEditor().mSuggestionRangeSpan == null) getEditor().mSuggestionRangeSpan = new SuggestionRangeSpan();
10143            if (underlineColor == 0) {
10144                // Fallback on the default highlight color when the first span does not provide one
10145                getEditor().mSuggestionRangeSpan.setBackgroundColor(mHighlightColor);
10146            } else {
10147                final float BACKGROUND_TRANSPARENCY = 0.4f;
10148                final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY);
10149                getEditor().mSuggestionRangeSpan.setBackgroundColor(
10150                        (underlineColor & 0x00FFFFFF) + (newAlpha << 24));
10151            }
10152            spannable.setSpan(getEditor().mSuggestionRangeSpan, spanUnionStart, spanUnionEnd,
10153                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
10154
10155            mSuggestionsAdapter.notifyDataSetChanged();
10156            return true;
10157        }
10158
10159        private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart,
10160                int unionEnd) {
10161            final Spannable text = (Spannable) mText;
10162            final int spanStart = text.getSpanStart(suggestionInfo.suggestionSpan);
10163            final int spanEnd = text.getSpanEnd(suggestionInfo.suggestionSpan);
10164
10165            // Adjust the start/end of the suggestion span
10166            suggestionInfo.suggestionStart = spanStart - unionStart;
10167            suggestionInfo.suggestionEnd = suggestionInfo.suggestionStart
10168                    + suggestionInfo.text.length();
10169
10170            suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0,
10171                    suggestionInfo.text.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
10172
10173            // Add the text before and after the span.
10174            final String textAsString = text.toString();
10175            suggestionInfo.text.insert(0, textAsString.substring(unionStart, spanStart));
10176            suggestionInfo.text.append(textAsString.substring(spanEnd, unionEnd));
10177        }
10178
10179        @Override
10180        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
10181            Editable editable = (Editable) mText;
10182            SuggestionInfo suggestionInfo = mSuggestionInfos[position];
10183
10184            if (suggestionInfo.suggestionIndex == DELETE_TEXT) {
10185                final int spanUnionStart = editable.getSpanStart(getEditor().mSuggestionRangeSpan);
10186                int spanUnionEnd = editable.getSpanEnd(getEditor().mSuggestionRangeSpan);
10187                if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) {
10188                    // Do not leave two adjacent spaces after deletion, or one at beginning of text
10189                    if (spanUnionEnd < editable.length() &&
10190                            Character.isSpaceChar(editable.charAt(spanUnionEnd)) &&
10191                            (spanUnionStart == 0 ||
10192                            Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) {
10193                        spanUnionEnd = spanUnionEnd + 1;
10194                    }
10195                    deleteText_internal(spanUnionStart, spanUnionEnd);
10196                }
10197                hide();
10198                return;
10199            }
10200
10201            final int spanStart = editable.getSpanStart(suggestionInfo.suggestionSpan);
10202            final int spanEnd = editable.getSpanEnd(suggestionInfo.suggestionSpan);
10203            if (spanStart < 0 || spanEnd <= spanStart) {
10204                // Span has been removed
10205                hide();
10206                return;
10207            }
10208            final String originalText = mText.toString().substring(spanStart, spanEnd);
10209
10210            if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY) {
10211                Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT);
10212                intent.putExtra("word", originalText);
10213                intent.putExtra("locale", getTextServicesLocale().toString());
10214                intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK);
10215                getContext().startActivity(intent);
10216                // There is no way to know if the word was indeed added. Re-check.
10217                // TODO The ExtractEditText should remove the span in the original text instead
10218                editable.removeSpan(suggestionInfo.suggestionSpan);
10219                updateSpellCheckSpans(spanStart, spanEnd, false);
10220            } else {
10221                // SuggestionSpans are removed by replace: save them before
10222                SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd,
10223                        SuggestionSpan.class);
10224                final int length = suggestionSpans.length;
10225                int[] suggestionSpansStarts = new int[length];
10226                int[] suggestionSpansEnds = new int[length];
10227                int[] suggestionSpansFlags = new int[length];
10228                for (int i = 0; i < length; i++) {
10229                    final SuggestionSpan suggestionSpan = suggestionSpans[i];
10230                    suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan);
10231                    suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan);
10232                    suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan);
10233
10234                    // Remove potential misspelled flags
10235                    int suggestionSpanFlags = suggestionSpan.getFlags();
10236                    if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) > 0) {
10237                        suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED;
10238                        suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT;
10239                        suggestionSpan.setFlags(suggestionSpanFlags);
10240                    }
10241                }
10242
10243                final int suggestionStart = suggestionInfo.suggestionStart;
10244                final int suggestionEnd = suggestionInfo.suggestionEnd;
10245                final String suggestion = suggestionInfo.text.subSequence(
10246                        suggestionStart, suggestionEnd).toString();
10247                replaceText_internal(spanStart, spanEnd, suggestion);
10248
10249                // Notify source IME of the suggestion pick. Do this before swaping texts.
10250                if (!TextUtils.isEmpty(
10251                        suggestionInfo.suggestionSpan.getNotificationTargetClassName())) {
10252                    InputMethodManager imm = InputMethodManager.peekInstance();
10253                    if (imm != null) {
10254                        imm.notifySuggestionPicked(suggestionInfo.suggestionSpan, originalText,
10255                                suggestionInfo.suggestionIndex);
10256                    }
10257                }
10258
10259                // Swap text content between actual text and Suggestion span
10260                String[] suggestions = suggestionInfo.suggestionSpan.getSuggestions();
10261                suggestions[suggestionInfo.suggestionIndex] = originalText;
10262
10263                // Restore previous SuggestionSpans
10264                final int lengthDifference = suggestion.length() - (spanEnd - spanStart);
10265                for (int i = 0; i < length; i++) {
10266                    // Only spans that include the modified region make sense after replacement
10267                    // Spans partially included in the replaced region are removed, there is no
10268                    // way to assign them a valid range after replacement
10269                    if (suggestionSpansStarts[i] <= spanStart &&
10270                            suggestionSpansEnds[i] >= spanEnd) {
10271                        setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i],
10272                                suggestionSpansEnds[i] + lengthDifference, suggestionSpansFlags[i]);
10273                    }
10274                }
10275
10276                // Move cursor at the end of the replaced word
10277                final int newCursorPosition = spanEnd + lengthDifference;
10278                setCursorPosition_internal(newCursorPosition, newCursorPosition);
10279            }
10280
10281            hide();
10282        }
10283    }
10284
10285    /**
10286     * An ActionMode Callback class that is used to provide actions while in text selection mode.
10287     *
10288     * The default callback provides a subset of Select All, Cut, Copy and Paste actions, depending
10289     * on which of these this TextView supports.
10290     */
10291    private class SelectionActionModeCallback implements ActionMode.Callback {
10292
10293        @Override
10294        public boolean onCreateActionMode(ActionMode mode, Menu menu) {
10295            TypedArray styledAttributes = mContext.obtainStyledAttributes(
10296                    com.android.internal.R.styleable.SelectionModeDrawables);
10297
10298            boolean allowText = getContext().getResources().getBoolean(
10299                    com.android.internal.R.bool.config_allowActionMenuItemTextWithIcon);
10300
10301            mode.setTitle(mContext.getString(com.android.internal.R.string.textSelectionCABTitle));
10302            mode.setSubtitle(null);
10303            mode.setTitleOptionalHint(true);
10304
10305            int selectAllIconId = 0; // No icon by default
10306            if (!allowText) {
10307                // Provide an icon, text will not be displayed on smaller screens.
10308                selectAllIconId = styledAttributes.getResourceId(
10309                        R.styleable.SelectionModeDrawables_actionModeSelectAllDrawable, 0);
10310            }
10311
10312            menu.add(0, ID_SELECT_ALL, 0, com.android.internal.R.string.selectAll).
10313                    setIcon(selectAllIconId).
10314                    setAlphabeticShortcut('a').
10315                    setShowAsAction(
10316                            MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
10317
10318            if (canCut()) {
10319                menu.add(0, ID_CUT, 0, com.android.internal.R.string.cut).
10320                    setIcon(styledAttributes.getResourceId(
10321                            R.styleable.SelectionModeDrawables_actionModeCutDrawable, 0)).
10322                    setAlphabeticShortcut('x').
10323                    setShowAsAction(
10324                            MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
10325            }
10326
10327            if (canCopy()) {
10328                menu.add(0, ID_COPY, 0, com.android.internal.R.string.copy).
10329                    setIcon(styledAttributes.getResourceId(
10330                            R.styleable.SelectionModeDrawables_actionModeCopyDrawable, 0)).
10331                    setAlphabeticShortcut('c').
10332                    setShowAsAction(
10333                            MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
10334            }
10335
10336            if (canPaste()) {
10337                menu.add(0, ID_PASTE, 0, com.android.internal.R.string.paste).
10338                        setIcon(styledAttributes.getResourceId(
10339                                R.styleable.SelectionModeDrawables_actionModePasteDrawable, 0)).
10340                        setAlphabeticShortcut('v').
10341                        setShowAsAction(
10342                                MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
10343            }
10344
10345            styledAttributes.recycle();
10346
10347            if (getEditor().mCustomSelectionActionModeCallback != null) {
10348                if (!getEditor().mCustomSelectionActionModeCallback.onCreateActionMode(mode, menu)) {
10349                    // The custom mode can choose to cancel the action mode
10350                    return false;
10351                }
10352            }
10353
10354            if (menu.hasVisibleItems() || mode.getCustomView() != null) {
10355                getSelectionController().show();
10356                return true;
10357            } else {
10358                return false;
10359            }
10360        }
10361
10362        @Override
10363        public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
10364            if (getEditor().mCustomSelectionActionModeCallback != null) {
10365                return getEditor().mCustomSelectionActionModeCallback.onPrepareActionMode(mode, menu);
10366            }
10367            return true;
10368        }
10369
10370        @Override
10371        public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
10372            if (getEditor().mCustomSelectionActionModeCallback != null &&
10373                 getEditor().mCustomSelectionActionModeCallback.onActionItemClicked(mode, item)) {
10374                return true;
10375            }
10376            return onTextContextMenuItem(item.getItemId());
10377        }
10378
10379        @Override
10380        public void onDestroyActionMode(ActionMode mode) {
10381            if (getEditor().mCustomSelectionActionModeCallback != null) {
10382                getEditor().mCustomSelectionActionModeCallback.onDestroyActionMode(mode);
10383            }
10384            Selection.setSelection((Spannable) mText, getSelectionEnd());
10385
10386            if (getEditor().mSelectionModifierCursorController != null) {
10387                getEditor().mSelectionModifierCursorController.hide();
10388            }
10389
10390            getEditor().mSelectionActionMode = null;
10391        }
10392    }
10393
10394    private class ActionPopupWindow extends PinnedPopupWindow implements OnClickListener {
10395        private static final int POPUP_TEXT_LAYOUT =
10396                com.android.internal.R.layout.text_edit_action_popup_text;
10397        private TextView mPasteTextView;
10398        private TextView mReplaceTextView;
10399
10400        @Override
10401        protected void createPopupWindow() {
10402            mPopupWindow = new PopupWindow(TextView.this.mContext, null,
10403                    com.android.internal.R.attr.textSelectHandleWindowStyle);
10404            mPopupWindow.setClippingEnabled(true);
10405        }
10406
10407        @Override
10408        protected void initContentView() {
10409            LinearLayout linearLayout = new LinearLayout(TextView.this.getContext());
10410            linearLayout.setOrientation(LinearLayout.HORIZONTAL);
10411            mContentView = linearLayout;
10412            mContentView.setBackgroundResource(
10413                    com.android.internal.R.drawable.text_edit_paste_window);
10414
10415            LayoutInflater inflater = (LayoutInflater)TextView.this.mContext.
10416                    getSystemService(Context.LAYOUT_INFLATER_SERVICE);
10417
10418            LayoutParams wrapContent = new LayoutParams(
10419                    ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
10420
10421            mPasteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null);
10422            mPasteTextView.setLayoutParams(wrapContent);
10423            mContentView.addView(mPasteTextView);
10424            mPasteTextView.setText(com.android.internal.R.string.paste);
10425            mPasteTextView.setOnClickListener(this);
10426
10427            mReplaceTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null);
10428            mReplaceTextView.setLayoutParams(wrapContent);
10429            mContentView.addView(mReplaceTextView);
10430            mReplaceTextView.setText(com.android.internal.R.string.replace);
10431            mReplaceTextView.setOnClickListener(this);
10432        }
10433
10434        @Override
10435        public void show() {
10436            boolean canPaste = canPaste();
10437            boolean canSuggest = isSuggestionsEnabled() && isCursorInsideSuggestionSpan();
10438            mPasteTextView.setVisibility(canPaste ? View.VISIBLE : View.GONE);
10439            mReplaceTextView.setVisibility(canSuggest ? View.VISIBLE : View.GONE);
10440
10441            if (!canPaste && !canSuggest) return;
10442
10443            super.show();
10444        }
10445
10446        @Override
10447        public void onClick(View view) {
10448            if (view == mPasteTextView && canPaste()) {
10449                onTextContextMenuItem(ID_PASTE);
10450                hide();
10451            } else if (view == mReplaceTextView) {
10452                final int middle = (getSelectionStart() + getSelectionEnd()) / 2;
10453                stopSelectionActionMode();
10454                Selection.setSelection((Spannable) mText, middle);
10455                showSuggestions();
10456            }
10457        }
10458
10459        @Override
10460        protected int getTextOffset() {
10461            return (getSelectionStart() + getSelectionEnd()) / 2;
10462        }
10463
10464        @Override
10465        protected int getVerticalLocalPosition(int line) {
10466            return mLayout.getLineTop(line) - mContentView.getMeasuredHeight();
10467        }
10468
10469        @Override
10470        protected int clipVertically(int positionY) {
10471            if (positionY < 0) {
10472                final int offset = getTextOffset();
10473                final int line = mLayout.getLineForOffset(offset);
10474                positionY += mLayout.getLineBottom(line) - mLayout.getLineTop(line);
10475                positionY += mContentView.getMeasuredHeight();
10476
10477                // Assumes insertion and selection handles share the same height
10478                final Drawable handle = mContext.getResources().getDrawable(mTextSelectHandleRes);
10479                positionY += handle.getIntrinsicHeight();
10480            }
10481
10482            return positionY;
10483        }
10484    }
10485
10486    private abstract class HandleView extends View implements TextViewPositionListener {
10487        protected Drawable mDrawable;
10488        protected Drawable mDrawableLtr;
10489        protected Drawable mDrawableRtl;
10490        private final PopupWindow mContainer;
10491        // Position with respect to the parent TextView
10492        private int mPositionX, mPositionY;
10493        private boolean mIsDragging;
10494        // Offset from touch position to mPosition
10495        private float mTouchToWindowOffsetX, mTouchToWindowOffsetY;
10496        protected int mHotspotX;
10497        // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up
10498        private float mTouchOffsetY;
10499        // Where the touch position should be on the handle to ensure a maximum cursor visibility
10500        private float mIdealVerticalOffset;
10501        // Parent's (TextView) previous position in window
10502        private int mLastParentX, mLastParentY;
10503        // Transient action popup window for Paste and Replace actions
10504        protected ActionPopupWindow mActionPopupWindow;
10505        // Previous text character offset
10506        private int mPreviousOffset = -1;
10507        // Previous text character offset
10508        private boolean mPositionHasChanged = true;
10509        // Used to delay the appearance of the action popup window
10510        private Runnable mActionPopupShower;
10511
10512        public HandleView(Drawable drawableLtr, Drawable drawableRtl) {
10513            super(TextView.this.mContext);
10514            mContainer = new PopupWindow(TextView.this.mContext, null,
10515                    com.android.internal.R.attr.textSelectHandleWindowStyle);
10516            mContainer.setSplitTouchEnabled(true);
10517            mContainer.setClippingEnabled(false);
10518            mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL);
10519            mContainer.setContentView(this);
10520
10521            mDrawableLtr = drawableLtr;
10522            mDrawableRtl = drawableRtl;
10523
10524            updateDrawable();
10525
10526            final int handleHeight = mDrawable.getIntrinsicHeight();
10527            mTouchOffsetY = -0.3f * handleHeight;
10528            mIdealVerticalOffset = 0.7f * handleHeight;
10529        }
10530
10531        protected void updateDrawable() {
10532            final int offset = getCurrentCursorOffset();
10533            final boolean isRtlCharAtOffset = mLayout.isRtlCharAt(offset);
10534            mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr;
10535            mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset);
10536        }
10537
10538        protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun);
10539
10540        // Touch-up filter: number of previous positions remembered
10541        private static final int HISTORY_SIZE = 5;
10542        private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150;
10543        private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350;
10544        private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE];
10545        private final int[] mPreviousOffsets = new int[HISTORY_SIZE];
10546        private int mPreviousOffsetIndex = 0;
10547        private int mNumberPreviousOffsets = 0;
10548
10549        private void startTouchUpFilter(int offset) {
10550            mNumberPreviousOffsets = 0;
10551            addPositionToTouchUpFilter(offset);
10552        }
10553
10554        private void addPositionToTouchUpFilter(int offset) {
10555            mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE;
10556            mPreviousOffsets[mPreviousOffsetIndex] = offset;
10557            mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis();
10558            mNumberPreviousOffsets++;
10559        }
10560
10561        private void filterOnTouchUp() {
10562            final long now = SystemClock.uptimeMillis();
10563            int i = 0;
10564            int index = mPreviousOffsetIndex;
10565            final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE);
10566            while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) {
10567                i++;
10568                index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE;
10569            }
10570
10571            if (i > 0 && i < iMax &&
10572                    (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) {
10573                positionAtCursorOffset(mPreviousOffsets[index], false);
10574            }
10575        }
10576
10577        public boolean offsetHasBeenChanged() {
10578            return mNumberPreviousOffsets > 1;
10579        }
10580
10581        @Override
10582        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
10583            setMeasuredDimension(mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight());
10584        }
10585
10586        public void show() {
10587            if (isShowing()) return;
10588
10589            getPositionListener().addSubscriber(this, true /* local position may change */);
10590
10591            // Make sure the offset is always considered new, even when focusing at same position
10592            mPreviousOffset = -1;
10593            positionAtCursorOffset(getCurrentCursorOffset(), false);
10594
10595            hideActionPopupWindow();
10596        }
10597
10598        protected void dismiss() {
10599            mIsDragging = false;
10600            mContainer.dismiss();
10601            onDetached();
10602        }
10603
10604        public void hide() {
10605            dismiss();
10606
10607            TextView.this.getPositionListener().removeSubscriber(this);
10608        }
10609
10610        void showActionPopupWindow(int delay) {
10611            if (mActionPopupWindow == null) {
10612                mActionPopupWindow = new ActionPopupWindow();
10613            }
10614            if (mActionPopupShower == null) {
10615                mActionPopupShower = new Runnable() {
10616                    public void run() {
10617                        mActionPopupWindow.show();
10618                    }
10619                };
10620            } else {
10621                TextView.this.removeCallbacks(mActionPopupShower);
10622            }
10623            TextView.this.postDelayed(mActionPopupShower, delay);
10624        }
10625
10626        protected void hideActionPopupWindow() {
10627            if (mActionPopupShower != null) {
10628                TextView.this.removeCallbacks(mActionPopupShower);
10629            }
10630            if (mActionPopupWindow != null) {
10631                mActionPopupWindow.hide();
10632            }
10633        }
10634
10635        public boolean isShowing() {
10636            return mContainer.isShowing();
10637        }
10638
10639        private boolean isVisible() {
10640            // Always show a dragging handle.
10641            if (mIsDragging) {
10642                return true;
10643            }
10644
10645            if (isInBatchEditMode()) {
10646                return false;
10647            }
10648
10649            return TextView.this.isPositionVisible(mPositionX + mHotspotX, mPositionY);
10650        }
10651
10652        public abstract int getCurrentCursorOffset();
10653
10654        protected abstract void updateSelection(int offset);
10655
10656        public abstract void updatePosition(float x, float y);
10657
10658        protected void positionAtCursorOffset(int offset, boolean parentScrolled) {
10659            // A HandleView relies on the layout, which may be nulled by external methods
10660            if (mLayout == null) {
10661                // Will update controllers' state, hiding them and stopping selection mode if needed
10662                prepareCursorControllers();
10663                return;
10664            }
10665
10666            boolean offsetChanged = offset != mPreviousOffset;
10667            if (offsetChanged || parentScrolled) {
10668                if (offsetChanged) {
10669                    updateSelection(offset);
10670                    addPositionToTouchUpFilter(offset);
10671                }
10672                final int line = mLayout.getLineForOffset(offset);
10673
10674                mPositionX = (int) (mLayout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX);
10675                mPositionY = mLayout.getLineBottom(line);
10676
10677                // Take TextView's padding and scroll into account.
10678                mPositionX += viewportToContentHorizontalOffset();
10679                mPositionY += viewportToContentVerticalOffset();
10680
10681                mPreviousOffset = offset;
10682                mPositionHasChanged = true;
10683            }
10684        }
10685
10686        public void updatePosition(int parentPositionX, int parentPositionY,
10687                boolean parentPositionChanged, boolean parentScrolled) {
10688            positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled);
10689            if (parentPositionChanged || mPositionHasChanged) {
10690                if (mIsDragging) {
10691                    // Update touchToWindow offset in case of parent scrolling while dragging
10692                    if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) {
10693                        mTouchToWindowOffsetX += parentPositionX - mLastParentX;
10694                        mTouchToWindowOffsetY += parentPositionY - mLastParentY;
10695                        mLastParentX = parentPositionX;
10696                        mLastParentY = parentPositionY;
10697                    }
10698
10699                    onHandleMoved();
10700                }
10701
10702                if (isVisible()) {
10703                    final int positionX = parentPositionX + mPositionX;
10704                    final int positionY = parentPositionY + mPositionY;
10705                    if (isShowing()) {
10706                        mContainer.update(positionX, positionY, -1, -1);
10707                    } else {
10708                        mContainer.showAtLocation(TextView.this, Gravity.NO_GRAVITY,
10709                                positionX, positionY);
10710                    }
10711                } else {
10712                    if (isShowing()) {
10713                        dismiss();
10714                    }
10715                }
10716
10717                mPositionHasChanged = false;
10718            }
10719        }
10720
10721        @Override
10722        protected void onDraw(Canvas c) {
10723            mDrawable.setBounds(0, 0, mRight - mLeft, mBottom - mTop);
10724            mDrawable.draw(c);
10725        }
10726
10727        @Override
10728        public boolean onTouchEvent(MotionEvent ev) {
10729            switch (ev.getActionMasked()) {
10730                case MotionEvent.ACTION_DOWN: {
10731                    startTouchUpFilter(getCurrentCursorOffset());
10732                    mTouchToWindowOffsetX = ev.getRawX() - mPositionX;
10733                    mTouchToWindowOffsetY = ev.getRawY() - mPositionY;
10734
10735                    final PositionListener positionListener = getPositionListener();
10736                    mLastParentX = positionListener.getPositionX();
10737                    mLastParentY = positionListener.getPositionY();
10738                    mIsDragging = true;
10739                    break;
10740                }
10741
10742                case MotionEvent.ACTION_MOVE: {
10743                    final float rawX = ev.getRawX();
10744                    final float rawY = ev.getRawY();
10745
10746                    // Vertical hysteresis: vertical down movement tends to snap to ideal offset
10747                    final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY;
10748                    final float currentVerticalOffset = rawY - mPositionY - mLastParentY;
10749                    float newVerticalOffset;
10750                    if (previousVerticalOffset < mIdealVerticalOffset) {
10751                        newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset);
10752                        newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset);
10753                    } else {
10754                        newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset);
10755                        newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset);
10756                    }
10757                    mTouchToWindowOffsetY = newVerticalOffset + mLastParentY;
10758
10759                    final float newPosX = rawX - mTouchToWindowOffsetX + mHotspotX;
10760                    final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY;
10761
10762                    updatePosition(newPosX, newPosY);
10763                    break;
10764                }
10765
10766                case MotionEvent.ACTION_UP:
10767                    filterOnTouchUp();
10768                    mIsDragging = false;
10769                    break;
10770
10771                case MotionEvent.ACTION_CANCEL:
10772                    mIsDragging = false;
10773                    break;
10774            }
10775            return true;
10776        }
10777
10778        public boolean isDragging() {
10779            return mIsDragging;
10780        }
10781
10782        void onHandleMoved() {
10783            hideActionPopupWindow();
10784        }
10785
10786        public void onDetached() {
10787            hideActionPopupWindow();
10788        }
10789    }
10790
10791    private class InsertionHandleView extends HandleView {
10792        private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000;
10793        private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds
10794
10795        // Used to detect taps on the insertion handle, which will affect the ActionPopupWindow
10796        private float mDownPositionX, mDownPositionY;
10797        private Runnable mHider;
10798
10799        public InsertionHandleView(Drawable drawable) {
10800            super(drawable, drawable);
10801        }
10802
10803        @Override
10804        public void show() {
10805            super.show();
10806
10807            final long durationSinceCutOrCopy = SystemClock.uptimeMillis() - LAST_CUT_OR_COPY_TIME;
10808            if (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION) {
10809                showActionPopupWindow(0);
10810            }
10811
10812            hideAfterDelay();
10813        }
10814
10815        public void showWithActionPopup() {
10816            show();
10817            showActionPopupWindow(0);
10818        }
10819
10820        private void hideAfterDelay() {
10821            if (mHider == null) {
10822                mHider = new Runnable() {
10823                    public void run() {
10824                        hide();
10825                    }
10826                };
10827            } else {
10828                removeHiderCallback();
10829            }
10830            TextView.this.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT);
10831        }
10832
10833        private void removeHiderCallback() {
10834            if (mHider != null) {
10835                TextView.this.removeCallbacks(mHider);
10836            }
10837        }
10838
10839        @Override
10840        protected int getHotspotX(Drawable drawable, boolean isRtlRun) {
10841            return drawable.getIntrinsicWidth() / 2;
10842        }
10843
10844        @Override
10845        public boolean onTouchEvent(MotionEvent ev) {
10846            final boolean result = super.onTouchEvent(ev);
10847
10848            switch (ev.getActionMasked()) {
10849                case MotionEvent.ACTION_DOWN:
10850                    mDownPositionX = ev.getRawX();
10851                    mDownPositionY = ev.getRawY();
10852                    break;
10853
10854                case MotionEvent.ACTION_UP:
10855                    if (!offsetHasBeenChanged()) {
10856                        final float deltaX = mDownPositionX - ev.getRawX();
10857                        final float deltaY = mDownPositionY - ev.getRawY();
10858                        final float distanceSquared = deltaX * deltaX + deltaY * deltaY;
10859
10860                        final ViewConfiguration viewConfiguration = ViewConfiguration.get(
10861                                TextView.this.getContext());
10862                        final int touchSlop = viewConfiguration.getScaledTouchSlop();
10863
10864                        if (distanceSquared < touchSlop * touchSlop) {
10865                            if (mActionPopupWindow != null && mActionPopupWindow.isShowing()) {
10866                                // Tapping on the handle dismisses the displayed action popup
10867                                mActionPopupWindow.hide();
10868                            } else {
10869                                showWithActionPopup();
10870                            }
10871                        }
10872                    }
10873                    hideAfterDelay();
10874                    break;
10875
10876                case MotionEvent.ACTION_CANCEL:
10877                    hideAfterDelay();
10878                    break;
10879
10880                default:
10881                    break;
10882            }
10883
10884            return result;
10885        }
10886
10887        @Override
10888        public int getCurrentCursorOffset() {
10889            return TextView.this.getSelectionStart();
10890        }
10891
10892        @Override
10893        public void updateSelection(int offset) {
10894            Selection.setSelection((Spannable) mText, offset);
10895        }
10896
10897        @Override
10898        public void updatePosition(float x, float y) {
10899            positionAtCursorOffset(getOffsetForPosition(x, y), false);
10900        }
10901
10902        @Override
10903        void onHandleMoved() {
10904            super.onHandleMoved();
10905            removeHiderCallback();
10906        }
10907
10908        @Override
10909        public void onDetached() {
10910            super.onDetached();
10911            removeHiderCallback();
10912        }
10913    }
10914
10915    private class SelectionStartHandleView extends HandleView {
10916
10917        public SelectionStartHandleView(Drawable drawableLtr, Drawable drawableRtl) {
10918            super(drawableLtr, drawableRtl);
10919        }
10920
10921        @Override
10922        protected int getHotspotX(Drawable drawable, boolean isRtlRun) {
10923            if (isRtlRun) {
10924                return drawable.getIntrinsicWidth() / 4;
10925            } else {
10926                return (drawable.getIntrinsicWidth() * 3) / 4;
10927            }
10928        }
10929
10930        @Override
10931        public int getCurrentCursorOffset() {
10932            return TextView.this.getSelectionStart();
10933        }
10934
10935        @Override
10936        public void updateSelection(int offset) {
10937            Selection.setSelection((Spannable) mText, offset, getSelectionEnd());
10938            updateDrawable();
10939        }
10940
10941        @Override
10942        public void updatePosition(float x, float y) {
10943            int offset = getOffsetForPosition(x, y);
10944
10945            // Handles can not cross and selection is at least one character
10946            final int selectionEnd = getSelectionEnd();
10947            if (offset >= selectionEnd) offset = Math.max(0, selectionEnd - 1);
10948
10949            positionAtCursorOffset(offset, false);
10950        }
10951
10952        public ActionPopupWindow getActionPopupWindow() {
10953            return mActionPopupWindow;
10954        }
10955    }
10956
10957    private class SelectionEndHandleView extends HandleView {
10958
10959        public SelectionEndHandleView(Drawable drawableLtr, Drawable drawableRtl) {
10960            super(drawableLtr, drawableRtl);
10961        }
10962
10963        @Override
10964        protected int getHotspotX(Drawable drawable, boolean isRtlRun) {
10965            if (isRtlRun) {
10966                return (drawable.getIntrinsicWidth() * 3) / 4;
10967            } else {
10968                return drawable.getIntrinsicWidth() / 4;
10969            }
10970        }
10971
10972        @Override
10973        public int getCurrentCursorOffset() {
10974            return TextView.this.getSelectionEnd();
10975        }
10976
10977        @Override
10978        public void updateSelection(int offset) {
10979            Selection.setSelection((Spannable) mText, getSelectionStart(), offset);
10980            updateDrawable();
10981        }
10982
10983        @Override
10984        public void updatePosition(float x, float y) {
10985            int offset = getOffsetForPosition(x, y);
10986
10987            // Handles can not cross and selection is at least one character
10988            final int selectionStart = getSelectionStart();
10989            if (offset <= selectionStart) offset = Math.min(selectionStart + 1, mText.length());
10990
10991            positionAtCursorOffset(offset, false);
10992        }
10993
10994        public void setActionPopupWindow(ActionPopupWindow actionPopupWindow) {
10995            mActionPopupWindow = actionPopupWindow;
10996        }
10997    }
10998
10999    /**
11000     * A CursorController instance can be used to control a cursor in the text.
11001     * It is not used outside of {@link TextView}.
11002     * @hide
11003     */
11004    private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener {
11005        /**
11006         * Makes the cursor controller visible on screen. Will be drawn by {@link #draw(Canvas)}.
11007         * See also {@link #hide()}.
11008         */
11009        public void show();
11010
11011        /**
11012         * Hide the cursor controller from screen.
11013         * See also {@link #show()}.
11014         */
11015        public void hide();
11016
11017        /**
11018         * Called when the view is detached from window. Perform house keeping task, such as
11019         * stopping Runnable thread that would otherwise keep a reference on the context, thus
11020         * preventing the activity from being recycled.
11021         */
11022        public void onDetached();
11023    }
11024
11025    private class InsertionPointCursorController implements CursorController {
11026        private InsertionHandleView mHandle;
11027
11028        public void show() {
11029            getHandle().show();
11030        }
11031
11032        public void showWithActionPopup() {
11033            getHandle().showWithActionPopup();
11034        }
11035
11036        public void hide() {
11037            if (mHandle != null) {
11038                mHandle.hide();
11039            }
11040        }
11041
11042        public void onTouchModeChanged(boolean isInTouchMode) {
11043            if (!isInTouchMode) {
11044                hide();
11045            }
11046        }
11047
11048        private InsertionHandleView getHandle() {
11049            if (getEditor().mSelectHandleCenter == null) {
11050                getEditor().mSelectHandleCenter = mContext.getResources().getDrawable(
11051                        mTextSelectHandleRes);
11052            }
11053            if (mHandle == null) {
11054                mHandle = new InsertionHandleView(getEditor().mSelectHandleCenter);
11055            }
11056            return mHandle;
11057        }
11058
11059        @Override
11060        public void onDetached() {
11061            final ViewTreeObserver observer = getViewTreeObserver();
11062            observer.removeOnTouchModeChangeListener(this);
11063
11064            if (mHandle != null) mHandle.onDetached();
11065        }
11066    }
11067
11068    private class SelectionModifierCursorController implements CursorController {
11069        private static final int DELAY_BEFORE_REPLACE_ACTION = 200; // milliseconds
11070        // The cursor controller handles, lazily created when shown.
11071        private SelectionStartHandleView mStartHandle;
11072        private SelectionEndHandleView mEndHandle;
11073        // The offsets of that last touch down event. Remembered to start selection there.
11074        private int mMinTouchOffset, mMaxTouchOffset;
11075
11076        // Double tap detection
11077        private long mPreviousTapUpTime = 0;
11078        private float mDownPositionX, mDownPositionY;
11079        private boolean mGestureStayedInTapRegion;
11080
11081        SelectionModifierCursorController() {
11082            resetTouchOffsets();
11083        }
11084
11085        public void show() {
11086            if (isInBatchEditMode()) {
11087                return;
11088            }
11089            initDrawables();
11090            initHandles();
11091            hideInsertionPointCursorController();
11092        }
11093
11094        private void initDrawables() {
11095            if (getEditor().mSelectHandleLeft == null) {
11096                getEditor().mSelectHandleLeft = mContext.getResources().getDrawable(
11097                        mTextSelectHandleLeftRes);
11098            }
11099            if (getEditor().mSelectHandleRight == null) {
11100                getEditor().mSelectHandleRight = mContext.getResources().getDrawable(
11101                        mTextSelectHandleRightRes);
11102            }
11103        }
11104
11105        private void initHandles() {
11106            // Lazy object creation has to be done before updatePosition() is called.
11107            if (mStartHandle == null) {
11108                mStartHandle = new SelectionStartHandleView(getEditor().mSelectHandleLeft, getEditor().mSelectHandleRight);
11109            }
11110            if (mEndHandle == null) {
11111                mEndHandle = new SelectionEndHandleView(getEditor().mSelectHandleRight, getEditor().mSelectHandleLeft);
11112            }
11113
11114            mStartHandle.show();
11115            mEndHandle.show();
11116
11117            // Make sure both left and right handles share the same ActionPopupWindow (so that
11118            // moving any of the handles hides the action popup).
11119            mStartHandle.showActionPopupWindow(DELAY_BEFORE_REPLACE_ACTION);
11120            mEndHandle.setActionPopupWindow(mStartHandle.getActionPopupWindow());
11121
11122            hideInsertionPointCursorController();
11123        }
11124
11125        public void hide() {
11126            if (mStartHandle != null) mStartHandle.hide();
11127            if (mEndHandle != null) mEndHandle.hide();
11128        }
11129
11130        public void onTouchEvent(MotionEvent event) {
11131            // This is done even when the View does not have focus, so that long presses can start
11132            // selection and tap can move cursor from this tap position.
11133            switch (event.getActionMasked()) {
11134                case MotionEvent.ACTION_DOWN:
11135                    final float x = event.getX();
11136                    final float y = event.getY();
11137
11138                    // Remember finger down position, to be able to start selection from there
11139                    mMinTouchOffset = mMaxTouchOffset = getOffsetForPosition(x, y);
11140
11141                    // Double tap detection
11142                    if (mGestureStayedInTapRegion) {
11143                        long duration = SystemClock.uptimeMillis() - mPreviousTapUpTime;
11144                        if (duration <= ViewConfiguration.getDoubleTapTimeout()) {
11145                            final float deltaX = x - mDownPositionX;
11146                            final float deltaY = y - mDownPositionY;
11147                            final float distanceSquared = deltaX * deltaX + deltaY * deltaY;
11148
11149                            ViewConfiguration viewConfiguration = ViewConfiguration.get(
11150                                    TextView.this.getContext());
11151                            int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop();
11152                            boolean stayedInArea = distanceSquared < doubleTapSlop * doubleTapSlop;
11153
11154                            if (stayedInArea && isPositionOnText(x, y)) {
11155                                startSelectionActionMode();
11156                                getEditor().mDiscardNextActionUp = true;
11157                            }
11158                        }
11159                    }
11160
11161                    mDownPositionX = x;
11162                    mDownPositionY = y;
11163                    mGestureStayedInTapRegion = true;
11164                    break;
11165
11166                case MotionEvent.ACTION_POINTER_DOWN:
11167                case MotionEvent.ACTION_POINTER_UP:
11168                    // Handle multi-point gestures. Keep min and max offset positions.
11169                    // Only activated for devices that correctly handle multi-touch.
11170                    if (mContext.getPackageManager().hasSystemFeature(
11171                            PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) {
11172                        updateMinAndMaxOffsets(event);
11173                    }
11174                    break;
11175
11176                case MotionEvent.ACTION_MOVE:
11177                    if (mGestureStayedInTapRegion) {
11178                        final float deltaX = event.getX() - mDownPositionX;
11179                        final float deltaY = event.getY() - mDownPositionY;
11180                        final float distanceSquared = deltaX * deltaX + deltaY * deltaY;
11181
11182                        final ViewConfiguration viewConfiguration = ViewConfiguration.get(
11183                                TextView.this.getContext());
11184                        int doubleTapTouchSlop = viewConfiguration.getScaledDoubleTapTouchSlop();
11185
11186                        if (distanceSquared > doubleTapTouchSlop * doubleTapTouchSlop) {
11187                            mGestureStayedInTapRegion = false;
11188                        }
11189                    }
11190                    break;
11191
11192                case MotionEvent.ACTION_UP:
11193                    mPreviousTapUpTime = SystemClock.uptimeMillis();
11194                    break;
11195            }
11196        }
11197
11198        /**
11199         * @param event
11200         */
11201        private void updateMinAndMaxOffsets(MotionEvent event) {
11202            int pointerCount = event.getPointerCount();
11203            for (int index = 0; index < pointerCount; index++) {
11204                int offset = getOffsetForPosition(event.getX(index), event.getY(index));
11205                if (offset < mMinTouchOffset) mMinTouchOffset = offset;
11206                if (offset > mMaxTouchOffset) mMaxTouchOffset = offset;
11207            }
11208        }
11209
11210        public int getMinTouchOffset() {
11211            return mMinTouchOffset;
11212        }
11213
11214        public int getMaxTouchOffset() {
11215            return mMaxTouchOffset;
11216        }
11217
11218        public void resetTouchOffsets() {
11219            mMinTouchOffset = mMaxTouchOffset = -1;
11220        }
11221
11222        /**
11223         * @return true iff this controller is currently used to move the selection start.
11224         */
11225        public boolean isSelectionStartDragged() {
11226            return mStartHandle != null && mStartHandle.isDragging();
11227        }
11228
11229        public void onTouchModeChanged(boolean isInTouchMode) {
11230            if (!isInTouchMode) {
11231                hide();
11232            }
11233        }
11234
11235        @Override
11236        public void onDetached() {
11237            final ViewTreeObserver observer = getViewTreeObserver();
11238            observer.removeOnTouchModeChangeListener(this);
11239
11240            if (mStartHandle != null) mStartHandle.onDetached();
11241            if (mEndHandle != null) mEndHandle.onDetached();
11242        }
11243    }
11244
11245    static class InputContentType {
11246        int imeOptions = EditorInfo.IME_NULL;
11247        String privateImeOptions;
11248        CharSequence imeActionLabel;
11249        int imeActionId;
11250        Bundle extras;
11251        OnEditorActionListener onEditorActionListener;
11252        boolean enterDown;
11253    }
11254
11255    static class InputMethodState {
11256        Rect mCursorRectInWindow = new Rect();
11257        RectF mTmpRectF = new RectF();
11258        float[] mTmpOffset = new float[2];
11259        ExtractedTextRequest mExtracting;
11260        final ExtractedText mTmpExtracted = new ExtractedText();
11261        int mBatchEditNesting;
11262        boolean mCursorChanged;
11263        boolean mSelectionModeChanged;
11264        boolean mContentChanged;
11265        int mChangedStart, mChangedEnd, mChangedDelta;
11266    }
11267
11268    private class Editor {
11269        // Cursor Controllers.
11270        InsertionPointCursorController mInsertionPointCursorController;
11271        SelectionModifierCursorController mSelectionModifierCursorController;
11272        ActionMode mSelectionActionMode;
11273        boolean mInsertionControllerEnabled;
11274        boolean mSelectionControllerEnabled;
11275
11276        // Used to highlight a word when it is corrected by the IME
11277        CorrectionHighlighter mCorrectionHighlighter;
11278
11279        InputContentType mInputContentType;
11280        InputMethodState mInputMethodState;
11281
11282        DisplayList mTextDisplayList;
11283        boolean mTextDisplayListIsValid;
11284
11285        boolean mFrozenWithFocus;
11286        boolean mSelectionMoved;
11287        boolean mTouchFocusSelected;
11288
11289        KeyListener mKeyListener;
11290        int mInputType = EditorInfo.TYPE_NULL;
11291
11292        boolean mDiscardNextActionUp;
11293        boolean mIgnoreActionUpEvent;
11294
11295        long mShowCursor;
11296        Blink mBlink;
11297
11298        boolean mCursorVisible = true;
11299        boolean mSelectAllOnFocus;
11300        boolean mTextIsSelectable;
11301
11302        CharSequence mError;
11303        boolean mErrorWasChanged;
11304        ErrorPopup mErrorPopup;
11305        /**
11306         * This flag is set if the TextView tries to display an error before it
11307         * is attached to the window (so its position is still unknown).
11308         * It causes the error to be shown later, when onAttachedToWindow()
11309         * is called.
11310         */
11311        boolean mShowErrorAfterAttach;
11312
11313        boolean mInBatchEditControllers;
11314
11315        SuggestionsPopupWindow mSuggestionsPopupWindow;
11316        SuggestionRangeSpan mSuggestionRangeSpan;
11317        Runnable mShowSuggestionRunnable;
11318
11319        final Drawable[] mCursorDrawable = new Drawable[2];
11320        int mCursorCount; // Current number of used mCursorDrawable: 0 (resource=0), 1 or 2 (split)
11321
11322        Drawable mSelectHandleLeft;
11323        Drawable mSelectHandleRight;
11324        Drawable mSelectHandleCenter;
11325
11326        // Global listener that detects changes in the global position of the TextView
11327        PositionListener mPositionListener;
11328
11329        float mLastDownPositionX, mLastDownPositionY;
11330        Callback mCustomSelectionActionModeCallback;
11331
11332        // Set when this TextView gained focus with some text selected. Will start selection mode.
11333        boolean mCreatedWithASelection;
11334
11335        WordIterator mWordIterator;
11336        SpellChecker mSpellChecker;
11337
11338        void onAttachedToWindow() {
11339            final ViewTreeObserver observer = getViewTreeObserver();
11340            // No need to create the controller.
11341            // The get method will add the listener on controller creation.
11342            if (mInsertionPointCursorController != null) {
11343                observer.addOnTouchModeChangeListener(mInsertionPointCursorController);
11344            }
11345            if (mSelectionModifierCursorController != null) {
11346                observer.addOnTouchModeChangeListener(mSelectionModifierCursorController);
11347            }
11348            updateSpellCheckSpans(0, mText.length(), true /* create the spell checker if needed */);
11349        }
11350
11351        void onDetachedFromWindow() {
11352            if (mError != null) {
11353                hideError();
11354            }
11355
11356            if (mBlink != null) {
11357                mBlink.removeCallbacks(mBlink);
11358            }
11359
11360            if (mInsertionPointCursorController != null) {
11361                mInsertionPointCursorController.onDetached();
11362            }
11363
11364            if (mSelectionModifierCursorController != null) {
11365                mSelectionModifierCursorController.onDetached();
11366            }
11367
11368            if (mShowSuggestionRunnable != null) {
11369                removeCallbacks(mShowSuggestionRunnable);
11370            }
11371
11372            if (mTextDisplayList != null) {
11373                mTextDisplayList.invalidate();
11374            }
11375
11376            if (mSpellChecker != null) {
11377                mSpellChecker.closeSession();
11378                // Forces the creation of a new SpellChecker next time this window is created.
11379                // Will handle the cases where the settings has been changed in the meantime.
11380                mSpellChecker = null;
11381            }
11382
11383            hideControllers();
11384        }
11385
11386        void adjustInputType(boolean password, boolean passwordInputType,
11387                boolean webPasswordInputType, boolean numberPasswordInputType) {
11388            // mInputType has been set from inputType, possibly modified by mInputMethod.
11389            // Specialize mInputType to [web]password if we have a text class and the original input
11390            // type was a password.
11391            if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
11392                if (password || passwordInputType) {
11393                    mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
11394                            | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD;
11395                }
11396                if (webPasswordInputType) {
11397                    mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
11398                            | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD;
11399                }
11400            } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) {
11401                if (numberPasswordInputType) {
11402                    mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
11403                            | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD;
11404                }
11405            }
11406        }
11407
11408        void setFrame() {
11409            if (mErrorPopup != null) {
11410                TextView tv = (TextView) mErrorPopup.getContentView();
11411                chooseSize(mErrorPopup, mError, tv);
11412                mErrorPopup.update(TextView.this, getErrorX(), getErrorY(),
11413                        mErrorPopup.getWidth(), mErrorPopup.getHeight());
11414            }
11415        }
11416
11417        void onFocusChanged(boolean focused, int direction) {
11418            mShowCursor = SystemClock.uptimeMillis();
11419            ensureEndedBatchEdit();
11420
11421            if (focused) {
11422                int selStart = getSelectionStart();
11423                int selEnd = getSelectionEnd();
11424
11425                // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection
11426                // mode for these, unless there was a specific selection already started.
11427                final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 &&
11428                        selEnd == mText.length();
11429
11430                mCreatedWithASelection = mFrozenWithFocus && hasSelection() && !isFocusHighlighted;
11431
11432                if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) {
11433                    // If a tap was used to give focus to that view, move cursor at tap position.
11434                    // Has to be done before onTakeFocus, which can be overloaded.
11435                    final int lastTapPosition = getLastTapPosition();
11436                    if (lastTapPosition >= 0) {
11437                        Selection.setSelection((Spannable) mText, lastTapPosition);
11438                    }
11439
11440                    // Note this may have to be moved out of the Editor class
11441                    if (mMovement != null) {
11442                        mMovement.onTakeFocus(TextView.this, (Spannable) mText, direction);
11443                    }
11444
11445                    // The DecorView does not have focus when the 'Done' ExtractEditText button is
11446                    // pressed. Since it is the ViewAncestor's mView, it requests focus before
11447                    // ExtractEditText clears focus, which gives focus to the ExtractEditText.
11448                    // This special case ensure that we keep current selection in that case.
11449                    // It would be better to know why the DecorView does not have focus at that time.
11450                    if (((TextView.this instanceof ExtractEditText) || mSelectionMoved) &&
11451                            selStart >= 0 && selEnd >= 0) {
11452                        /*
11453                         * Someone intentionally set the selection, so let them
11454                         * do whatever it is that they wanted to do instead of
11455                         * the default on-focus behavior.  We reset the selection
11456                         * here instead of just skipping the onTakeFocus() call
11457                         * because some movement methods do something other than
11458                         * just setting the selection in theirs and we still
11459                         * need to go through that path.
11460                         */
11461                        Selection.setSelection((Spannable) mText, selStart, selEnd);
11462                    }
11463
11464                    if (mSelectAllOnFocus) {
11465                        selectAll();
11466                    }
11467
11468                    mTouchFocusSelected = true;
11469                }
11470
11471                mFrozenWithFocus = false;
11472                mSelectionMoved = false;
11473
11474                if (mError != null) {
11475                    showError();
11476                }
11477
11478                makeBlink();
11479            } else {
11480                if (mError != null) {
11481                    hideError();
11482                }
11483                // Don't leave us in the middle of a batch edit.
11484                onEndBatchEdit();
11485
11486                if (TextView.this instanceof ExtractEditText) {
11487                    // terminateTextSelectionMode removes selection, which we want to keep when
11488                    // ExtractEditText goes out of focus.
11489                    final int selStart = getSelectionStart();
11490                    final int selEnd = getSelectionEnd();
11491                    hideControllers();
11492                    Selection.setSelection((Spannable) mText, selStart, selEnd);
11493                } else {
11494                    hideControllers();
11495                    downgradeEasyCorrectionSpans();
11496                }
11497
11498                // No need to create the controller
11499                if (mSelectionModifierCursorController != null) {
11500                    mSelectionModifierCursorController.resetTouchOffsets();
11501                }
11502            }
11503        }
11504
11505        void sendOnTextChanged(int start, int after) {
11506            updateSpellCheckSpans(start, start + after, false);
11507            mTextDisplayListIsValid = false;
11508
11509            // Hide the controllers as soon as text is modified (typing, procedural...)
11510            // We do not hide the span controllers, since they can be added when a new text is
11511            // inserted into the text view (voice IME).
11512            hideCursorControllers();
11513        }
11514
11515        private int getLastTapPosition() {
11516            // No need to create the controller at that point, no last tap position saved
11517            if (mSelectionModifierCursorController != null) {
11518                int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset();
11519                if (lastTapPosition >= 0) {
11520                    // Safety check, should not be possible.
11521                    if (lastTapPosition > mText.length()) {
11522                        Log.e(LOG_TAG, "Invalid tap focus position (" + lastTapPosition + " vs "
11523                                + mText.length() + ")");
11524                        lastTapPosition = mText.length();
11525                    }
11526                    return lastTapPosition;
11527                }
11528            }
11529
11530            return -1;
11531        }
11532
11533        void onWindowFocusChanged(boolean hasWindowFocus) {
11534            if (hasWindowFocus) {
11535                if (mBlink != null) {
11536                    mBlink.uncancel();
11537                    makeBlink();
11538                }
11539            } else {
11540                if (mBlink != null) {
11541                    mBlink.cancel();
11542                }
11543                if (mInputContentType != null) {
11544                    mInputContentType.enterDown = false;
11545                }
11546                // Order matters! Must be done before onParentLostFocus to rely on isShowingUp
11547                hideControllers();
11548                if (mSuggestionsPopupWindow != null) {
11549                    mSuggestionsPopupWindow.onParentLostFocus();
11550                }
11551
11552                // Don't leave us in the middle of a batch edit.
11553                onEndBatchEdit();
11554            }
11555        }
11556
11557        void onTouchEvent(MotionEvent event) {
11558            if (hasSelectionController()) {
11559                getSelectionController().onTouchEvent(event);
11560            }
11561
11562            if (mShowSuggestionRunnable != null) {
11563                removeCallbacks(mShowSuggestionRunnable);
11564                mShowSuggestionRunnable = null;
11565            }
11566
11567            if (event.getActionMasked() == MotionEvent.ACTION_DOWN) {
11568                mLastDownPositionX = event.getX();
11569                mLastDownPositionY = event.getY();
11570
11571                // Reset this state; it will be re-set if super.onTouchEvent
11572                // causes focus to move to the view.
11573                mTouchFocusSelected = false;
11574                mIgnoreActionUpEvent = false;
11575            }
11576        }
11577
11578        void onDraw(Canvas canvas, Layout layout, Path highlight, int cursorOffsetVertical) {
11579            final int selectionStart = getSelectionStart();
11580            final int selectionEnd = getSelectionEnd();
11581
11582            final InputMethodState ims = mInputMethodState;
11583            if (ims != null && ims.mBatchEditNesting == 0) {
11584                InputMethodManager imm = InputMethodManager.peekInstance();
11585                if (imm != null) {
11586                    if (imm.isActive(TextView.this)) {
11587                        boolean reported = false;
11588                        if (ims.mContentChanged || ims.mSelectionModeChanged) {
11589                            // We are in extract mode and the content has changed
11590                            // in some way... just report complete new text to the
11591                            // input method.
11592                            reported = reportExtractedText();
11593                        }
11594                        if (!reported && highlight != null) {
11595                            int candStart = -1;
11596                            int candEnd = -1;
11597                            if (mText instanceof Spannable) {
11598                                Spannable sp = (Spannable)mText;
11599                                candStart = EditableInputConnection.getComposingSpanStart(sp);
11600                                candEnd = EditableInputConnection.getComposingSpanEnd(sp);
11601                            }
11602                            imm.updateSelection(TextView.this,
11603                                    selectionStart, selectionEnd, candStart, candEnd);
11604                        }
11605                    }
11606
11607                    if (imm.isWatchingCursor(TextView.this) && highlight != null) {
11608                        highlight.computeBounds(ims.mTmpRectF, true);
11609                        ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0;
11610
11611                        canvas.getMatrix().mapPoints(ims.mTmpOffset);
11612                        ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]);
11613
11614                        ims.mTmpRectF.offset(0, cursorOffsetVertical);
11615
11616                        ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5),
11617                                (int)(ims.mTmpRectF.top + 0.5),
11618                                (int)(ims.mTmpRectF.right + 0.5),
11619                                (int)(ims.mTmpRectF.bottom + 0.5));
11620
11621                        imm.updateCursor(TextView.this,
11622                                ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top,
11623                                ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom);
11624                    }
11625                }
11626            }
11627
11628            if (mCorrectionHighlighter != null) {
11629                mCorrectionHighlighter.draw(canvas, cursorOffsetVertical);
11630            }
11631
11632            if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) {
11633                drawCursor(canvas, cursorOffsetVertical);
11634                // Rely on the drawable entirely, do not draw the cursor line.
11635                // Has to be done after the IMM related code above which relies on the highlight.
11636                highlight = null;
11637            }
11638
11639            if (canHaveDisplayList() && canvas.isHardwareAccelerated()) {
11640                drawHardwareAccelerated(canvas, layout, highlight, cursorOffsetVertical);
11641            } else {
11642                layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
11643            }
11644
11645            if (mMarquee != null && mMarquee.shouldDrawGhost()) {
11646                canvas.translate((int) mMarquee.getGhostOffset(), 0.0f);
11647                layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
11648            }
11649        }
11650
11651        private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight,
11652                int cursorOffsetVertical) {
11653            final int width = mRight - mLeft;
11654            final int height = mBottom - mTop;
11655
11656            final long lineRange = layout.getLineRangeForDraw(canvas);
11657            int firstLine = TextUtils.unpackRangeStartFromLong(lineRange);
11658            int lastLine = TextUtils.unpackRangeEndFromLong(lineRange);
11659            if (lastLine < 0) return;
11660
11661            layout.drawBackground(canvas, highlight, mHighlightPaint, cursorOffsetVertical,
11662                    firstLine, lastLine);
11663
11664            if (mTextDisplayList == null || !mTextDisplayList.isValid() ||
11665                    !mTextDisplayListIsValid) {
11666                if (mTextDisplayList == null) {
11667                    mTextDisplayList = getHardwareRenderer().createDisplayList("Text");
11668                }
11669
11670                final HardwareCanvas hardwareCanvas = mTextDisplayList.start();
11671                try {
11672                    hardwareCanvas.setViewport(width, height);
11673                    // The dirty rect should always be null for a display list
11674                    hardwareCanvas.onPreDraw(null);
11675                    hardwareCanvas.translate(-mScrollX, -mScrollY);
11676                    layout.drawText(hardwareCanvas, firstLine, lastLine);
11677                    //layout.draw(hardwareCanvas, highlight, mHighlightPaint, cursorOffsetVertical);
11678                    hardwareCanvas.translate(mScrollX, mScrollY);
11679                } finally {
11680                    hardwareCanvas.onPostDraw();
11681                    mTextDisplayList.end();
11682                    mTextDisplayListIsValid = true;
11683                }
11684            }
11685            canvas.translate(mScrollX, mScrollY);
11686            ((HardwareCanvas) canvas).drawDisplayList(mTextDisplayList, width, height, null,
11687                    DisplayList.FLAG_CLIP_CHILDREN);
11688            canvas.translate(-mScrollX, -mScrollY);
11689        }
11690
11691        private void drawCursor(Canvas canvas, int cursorOffsetVertical) {
11692            final boolean translate = cursorOffsetVertical != 0;
11693            if (translate) canvas.translate(0, cursorOffsetVertical);
11694            for (int i = 0; i < getEditor().mCursorCount; i++) {
11695                mCursorDrawable[i].draw(canvas);
11696            }
11697            if (translate) canvas.translate(0, -cursorOffsetVertical);
11698        }
11699
11700        private void updateCursorsPositions() {
11701            if (mCursorDrawableRes == 0) {
11702                mCursorCount = 0;
11703                return;
11704            }
11705
11706            final int offset = getSelectionStart();
11707            final int line = mLayout.getLineForOffset(offset);
11708            final int top = mLayout.getLineTop(line);
11709            final int bottom = mLayout.getLineTop(line + 1);
11710
11711            mCursorCount = mLayout.isLevelBoundary(offset) ? 2 : 1;
11712
11713            int middle = bottom;
11714            if (mCursorCount == 2) {
11715                // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)}
11716                middle = (top + bottom) >> 1;
11717            }
11718
11719            updateCursorPosition(0, top, middle, mLayout.getPrimaryHorizontal(offset));
11720
11721            if (mCursorCount == 2) {
11722                updateCursorPosition(1, middle, bottom, mLayout.getSecondaryHorizontal(offset));
11723            }
11724        }
11725
11726        private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) {
11727            if (mCursorDrawable[cursorIndex] == null)
11728                mCursorDrawable[cursorIndex] = mContext.getResources().getDrawable(mCursorDrawableRes);
11729
11730            if (mTempRect == null) mTempRect = new Rect();
11731            mCursorDrawable[cursorIndex].getPadding(mTempRect);
11732            final int width = mCursorDrawable[cursorIndex].getIntrinsicWidth();
11733            horizontal = Math.max(0.5f, horizontal - 0.5f);
11734            final int left = (int) (horizontal) - mTempRect.left;
11735            mCursorDrawable[cursorIndex].setBounds(left, top - mTempRect.top, left + width,
11736                    bottom + mTempRect.bottom);
11737        }
11738    }
11739}
11740