TextView.java revision fa1babd22105416e8f3d0988d46982d0313da63c 
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.ClipboardManager;
22import android.content.Context;
23import android.content.res.ColorStateList;
24import android.content.res.CompatibilityInfo;
25import android.content.res.Resources;
26import android.content.res.TypedArray;
27import android.content.res.XmlResourceParser;
28import android.graphics.Canvas;
29import android.graphics.Paint;
30import android.graphics.Path;
31import android.graphics.Rect;
32import android.graphics.RectF;
33import android.graphics.Typeface;
34import android.graphics.drawable.Drawable;
35import android.inputmethodservice.ExtractEditText;
36import android.os.Bundle;
37import android.os.Handler;
38import android.os.Message;
39import android.os.Parcel;
40import android.os.Parcelable;
41import android.os.SystemClock;
42import android.provider.Settings;
43import android.text.BoringLayout;
44import android.text.DynamicLayout;
45import android.text.Editable;
46import android.text.GetChars;
47import android.text.GraphicsOperations;
48import android.text.InputFilter;
49import android.text.InputType;
50import android.text.Layout;
51import android.text.ParcelableSpan;
52import android.text.Selection;
53import android.text.SpanWatcher;
54import android.text.Spannable;
55import android.text.SpannableString;
56import android.text.Spanned;
57import android.text.SpannedString;
58import android.text.StaticLayout;
59import android.text.TextDirectionHeuristic;
60import android.text.TextDirectionHeuristics;
61import android.text.TextPaint;
62import android.text.TextUtils;
63import android.text.TextUtils.TruncateAt;
64import android.text.TextWatcher;
65import android.text.method.AllCapsTransformationMethod;
66import android.text.method.ArrowKeyMovementMethod;
67import android.text.method.DateKeyListener;
68import android.text.method.DateTimeKeyListener;
69import android.text.method.DialerKeyListener;
70import android.text.method.DigitsKeyListener;
71import android.text.method.KeyListener;
72import android.text.method.LinkMovementMethod;
73import android.text.method.MetaKeyKeyListener;
74import android.text.method.MovementMethod;
75import android.text.method.PasswordTransformationMethod;
76import android.text.method.SingleLineTransformationMethod;
77import android.text.method.TextKeyListener;
78import android.text.method.TimeKeyListener;
79import android.text.method.TransformationMethod;
80import android.text.method.TransformationMethod2;
81import android.text.method.WordIterator;
82import android.text.style.CharacterStyle;
83import android.text.style.ClickableSpan;
84import android.text.style.ParagraphStyle;
85import android.text.style.SpellCheckSpan;
86import android.text.style.SuggestionSpan;
87import android.text.style.URLSpan;
88import android.text.style.UpdateAppearance;
89import android.text.util.Linkify;
90import android.util.AttributeSet;
91import android.util.FloatMath;
92import android.util.Log;
93import android.util.TypedValue;
94import android.view.AccessibilityIterators.TextSegmentIterator;
95import android.view.ActionMode;
96import android.view.DragEvent;
97import android.view.Gravity;
98import android.view.HapticFeedbackConstants;
99import android.view.KeyCharacterMap;
100import android.view.KeyEvent;
101import android.view.Menu;
102import android.view.MenuItem;
103import android.view.MotionEvent;
104import android.view.View;
105import android.view.ViewConfiguration;
106import android.view.ViewDebug;
107import android.view.ViewGroup.LayoutParams;
108import android.view.ViewRootImpl;
109import android.view.ViewTreeObserver;
110import android.view.accessibility.AccessibilityEvent;
111import android.view.accessibility.AccessibilityManager;
112import android.view.accessibility.AccessibilityNodeInfo;
113import android.view.animation.AnimationUtils;
114import android.view.inputmethod.BaseInputConnection;
115import android.view.inputmethod.CompletionInfo;
116import android.view.inputmethod.CorrectionInfo;
117import android.view.inputmethod.EditorInfo;
118import android.view.inputmethod.ExtractedText;
119import android.view.inputmethod.ExtractedTextRequest;
120import android.view.inputmethod.InputConnection;
121import android.view.inputmethod.InputMethodManager;
122import android.view.textservice.SpellCheckerSubtype;
123import android.view.textservice.TextServicesManager;
124import android.widget.RemoteViews.RemoteView;
125
126import com.android.internal.util.FastMath;
127import com.android.internal.widget.EditableInputConnection;
128
129import org.xmlpull.v1.XmlPullParserException;
130
131import java.io.IOException;
132import java.lang.ref.WeakReference;
133import java.util.ArrayList;
134import java.util.Locale;
135
136/**
137 * Displays text to the user and optionally allows them to edit it.  A TextView
138 * is a complete text editor, however the basic class is configured to not
139 * allow editing; see {@link EditText} for a subclass that configures the text
140 * view for editing.
141 *
142 * <p>
143 * <b>XML attributes</b>
144 * <p>
145 * See {@link android.R.styleable#TextView TextView Attributes},
146 * {@link android.R.styleable#View View Attributes}
147 *
148 * @attr ref android.R.styleable#TextView_text
149 * @attr ref android.R.styleable#TextView_bufferType
150 * @attr ref android.R.styleable#TextView_hint
151 * @attr ref android.R.styleable#TextView_textColor
152 * @attr ref android.R.styleable#TextView_textColorHighlight
153 * @attr ref android.R.styleable#TextView_textColorHint
154 * @attr ref android.R.styleable#TextView_textAppearance
155 * @attr ref android.R.styleable#TextView_textColorLink
156 * @attr ref android.R.styleable#TextView_textSize
157 * @attr ref android.R.styleable#TextView_textScaleX
158 * @attr ref android.R.styleable#TextView_fontFamily
159 * @attr ref android.R.styleable#TextView_typeface
160 * @attr ref android.R.styleable#TextView_textStyle
161 * @attr ref android.R.styleable#TextView_cursorVisible
162 * @attr ref android.R.styleable#TextView_maxLines
163 * @attr ref android.R.styleable#TextView_maxHeight
164 * @attr ref android.R.styleable#TextView_lines
165 * @attr ref android.R.styleable#TextView_height
166 * @attr ref android.R.styleable#TextView_minLines
167 * @attr ref android.R.styleable#TextView_minHeight
168 * @attr ref android.R.styleable#TextView_maxEms
169 * @attr ref android.R.styleable#TextView_maxWidth
170 * @attr ref android.R.styleable#TextView_ems
171 * @attr ref android.R.styleable#TextView_width
172 * @attr ref android.R.styleable#TextView_minEms
173 * @attr ref android.R.styleable#TextView_minWidth
174 * @attr ref android.R.styleable#TextView_gravity
175 * @attr ref android.R.styleable#TextView_scrollHorizontally
176 * @attr ref android.R.styleable#TextView_password
177 * @attr ref android.R.styleable#TextView_singleLine
178 * @attr ref android.R.styleable#TextView_selectAllOnFocus
179 * @attr ref android.R.styleable#TextView_includeFontPadding
180 * @attr ref android.R.styleable#TextView_maxLength
181 * @attr ref android.R.styleable#TextView_shadowColor
182 * @attr ref android.R.styleable#TextView_shadowDx
183 * @attr ref android.R.styleable#TextView_shadowDy
184 * @attr ref android.R.styleable#TextView_shadowRadius
185 * @attr ref android.R.styleable#TextView_autoLink
186 * @attr ref android.R.styleable#TextView_linksClickable
187 * @attr ref android.R.styleable#TextView_numeric
188 * @attr ref android.R.styleable#TextView_digits
189 * @attr ref android.R.styleable#TextView_phoneNumber
190 * @attr ref android.R.styleable#TextView_inputMethod
191 * @attr ref android.R.styleable#TextView_capitalize
192 * @attr ref android.R.styleable#TextView_autoText
193 * @attr ref android.R.styleable#TextView_editable
194 * @attr ref android.R.styleable#TextView_freezesText
195 * @attr ref android.R.styleable#TextView_ellipsize
196 * @attr ref android.R.styleable#TextView_drawableTop
197 * @attr ref android.R.styleable#TextView_drawableBottom
198 * @attr ref android.R.styleable#TextView_drawableRight
199 * @attr ref android.R.styleable#TextView_drawableLeft
200 * @attr ref android.R.styleable#TextView_drawableStart
201 * @attr ref android.R.styleable#TextView_drawableEnd
202 * @attr ref android.R.styleable#TextView_drawablePadding
203 * @attr ref android.R.styleable#TextView_lineSpacingExtra
204 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
205 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
206 * @attr ref android.R.styleable#TextView_inputType
207 * @attr ref android.R.styleable#TextView_imeOptions
208 * @attr ref android.R.styleable#TextView_privateImeOptions
209 * @attr ref android.R.styleable#TextView_imeActionLabel
210 * @attr ref android.R.styleable#TextView_imeActionId
211 * @attr ref android.R.styleable#TextView_editorExtras
212 */
213@RemoteView
214public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
215    static final String LOG_TAG = "TextView";
216    static final boolean DEBUG_EXTRACT = false;
217
218    // Enum for the "typeface" XML parameter.
219    // TODO: How can we get this from the XML instead of hardcoding it here?
220    private static final int SANS = 1;
221    private static final int SERIF = 2;
222    private static final int MONOSPACE = 3;
223
224    // Bitfield for the "numeric" XML parameter.
225    // TODO: How can we get this from the XML instead of hardcoding it here?
226    private static final int SIGNED = 2;
227    private static final int DECIMAL = 4;
228
229    /**
230     * Draw marquee text with fading edges as usual
231     */
232    private static final int MARQUEE_FADE_NORMAL = 0;
233
234    /**
235     * Draw marquee text as ellipsize end while inactive instead of with the fade.
236     * (Useful for devices where the fade can be expensive if overdone)
237     */
238    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
239
240    /**
241     * Draw marquee text with fading edges because it is currently active/animating.
242     */
243    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
244
245    private static final int LINES = 1;
246    private static final int EMS = LINES;
247    private static final int PIXELS = 2;
248
249    private static final RectF TEMP_RECTF = new RectF();
250
251    // XXX should be much larger
252    private static final int VERY_WIDE = 1024*1024;
253    private static final int ANIMATED_SCROLL_GAP = 250;
254
255    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
256    private static final Spanned EMPTY_SPANNED = new SpannedString("");
257
258    private static final int CHANGE_WATCHER_PRIORITY = 100;
259
260    // New state used to change background based on whether this TextView is multiline.
261    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
262
263    // System wide time for last cut or copy action.
264    static long LAST_CUT_OR_COPY_TIME;
265
266    private ColorStateList mTextColor;
267    private ColorStateList mHintTextColor;
268    private ColorStateList mLinkTextColor;
269    private int mCurTextColor;
270    private int mCurHintTextColor;
271    private boolean mFreezesText;
272    private boolean mTemporaryDetach;
273    private boolean mDispatchTemporaryDetach;
274
275    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
276    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
277
278    private float mShadowRadius, mShadowDx, mShadowDy;
279
280    private boolean mPreDrawRegistered;
281
282    private TextUtils.TruncateAt mEllipsize;
283
284    static class Drawables {
285        final Rect mCompoundRect = new Rect();
286        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight,
287                mDrawableStart, mDrawableEnd;
288        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
289                mDrawableSizeStart, mDrawableSizeEnd;
290        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
291                mDrawableHeightStart, mDrawableHeightEnd;
292        int mDrawablePadding;
293    }
294    Drawables mDrawables;
295
296    private CharWrapper mCharWrapper;
297
298    private Marquee mMarquee;
299    private boolean mRestartMarquee;
300
301    private int mMarqueeRepeatLimit = 3;
302
303    // The alignment to pass to Layout, or null if not resolved.
304    private Layout.Alignment mLayoutAlignment;
305    private int mResolvedTextAlignment;
306
307    private boolean mResolvedDrawables;
308
309    /**
310     * On some devices the fading edges add a performance penalty if used
311     * extensively in the same layout. This mode indicates how the marquee
312     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
313     */
314    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
315
316    /**
317     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
318     * the layout that should be used when the mode switches.
319     */
320    private Layout mSavedMarqueeModeLayout;
321
322    @ViewDebug.ExportedProperty(category = "text")
323    private CharSequence mText;
324    private CharSequence mTransformed;
325    private BufferType mBufferType = BufferType.NORMAL;
326
327    private CharSequence mHint;
328    private Layout mHintLayout;
329
330    private MovementMethod mMovement;
331
332    private TransformationMethod mTransformation;
333    private boolean mAllowTransformationLengthChange;
334    private ChangeWatcher mChangeWatcher;
335
336    private ArrayList<TextWatcher> mListeners;
337
338    // display attributes
339    private final TextPaint mTextPaint;
340    private boolean mUserSetTextScaleX;
341    private Layout mLayout;
342
343    private int mGravity = Gravity.TOP | Gravity.START;
344    private boolean mHorizontallyScrolling;
345
346    private int mAutoLinkMask;
347    private boolean mLinksClickable = true;
348
349    private float mSpacingMult = 1.0f;
350    private float mSpacingAdd = 0.0f;
351
352    private int mMaximum = Integer.MAX_VALUE;
353    private int mMaxMode = LINES;
354    private int mMinimum = 0;
355    private int mMinMode = LINES;
356
357    private int mOldMaximum = mMaximum;
358    private int mOldMaxMode = mMaxMode;
359
360    private int mMaxWidth = Integer.MAX_VALUE;
361    private int mMaxWidthMode = PIXELS;
362    private int mMinWidth = 0;
363    private int mMinWidthMode = PIXELS;
364
365    private boolean mSingleLine;
366    private int mDesiredHeightAtMeasure = -1;
367    private boolean mIncludePad = true;
368
369    // tmp primitives, so we don't alloc them on each draw
370    private Rect mTempRect;
371    private long mLastScroll;
372    private Scroller mScroller;
373
374    private BoringLayout.Metrics mBoring, mHintBoring;
375    private BoringLayout mSavedLayout, mSavedHintLayout;
376
377    private TextDirectionHeuristic mTextDir;
378
379    private InputFilter[] mFilters = NO_FILTERS;
380
381    // It is possible to have a selection even when mEditor is null (programmatically set, like when
382    // a link is pressed). These highlight-related fields do not go in mEditor.
383    int mHighlightColor = 0x6633B5E5;
384    private Path mHighlightPath;
385    private final Paint mHighlightPaint;
386    private boolean mHighlightPathBogus = true;
387
388    // Although these fields are specific to editable text, they are not added to Editor because
389    // they are defined by the TextView's style and are theme-dependent.
390    int mCursorDrawableRes;
391    // These four fields, could be moved to Editor, since we know their default values and we
392    // could condition the creation of the Editor to a non standard value. This is however
393    // brittle since the hardcoded values here (such as
394    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
395    // default style is modified.
396    int mTextSelectHandleLeftRes;
397    int mTextSelectHandleRightRes;
398    int mTextSelectHandleRes;
399    int mTextEditSuggestionItemLayout;
400
401    /**
402     * EditText specific data, created on demand when one of the Editor fields is used.
403     * See {@link #createEditorIfNeeded()}.
404     */
405    private Editor mEditor;
406
407    /*
408     * Kick-start the font cache for the zygote process (to pay the cost of
409     * initializing freetype for our default font only once).
410     */
411    static {
412        Paint p = new Paint();
413        p.setAntiAlias(true);
414        // We don't care about the result, just the side-effect of measuring.
415        p.measureText("H");
416    }
417
418    /**
419     * Interface definition for a callback to be invoked when an action is
420     * performed on the editor.
421     */
422    public interface OnEditorActionListener {
423        /**
424         * Called when an action is being performed.
425         *
426         * @param v The view that was clicked.
427         * @param actionId Identifier of the action.  This will be either the
428         * identifier you supplied, or {@link EditorInfo#IME_NULL
429         * EditorInfo.IME_NULL} if being called due to the enter key
430         * being pressed.
431         * @param event If triggered by an enter key, this is the event;
432         * otherwise, this is null.
433         * @return Return true if you have consumed the action, else false.
434         */
435        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
436    }
437
438    public TextView(Context context) {
439        this(context, null);
440    }
441
442    public TextView(Context context, AttributeSet attrs) {
443        this(context, attrs, com.android.internal.R.attr.textViewStyle);
444    }
445
446    @SuppressWarnings("deprecation")
447    public TextView(Context context, AttributeSet attrs, int defStyle) {
448        super(context, attrs, defStyle);
449        mText = "";
450
451        final Resources res = getResources();
452        final CompatibilityInfo compat = res.getCompatibilityInfo();
453
454        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
455        mTextPaint.density = res.getDisplayMetrics().density;
456        mTextPaint.setCompatibilityScaling(compat.applicationScale);
457
458        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
459        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
460
461        mMovement = getDefaultMovementMethod();
462
463        mTransformation = null;
464
465        int textColorHighlight = 0;
466        ColorStateList textColor = null;
467        ColorStateList textColorHint = null;
468        ColorStateList textColorLink = null;
469        int textSize = 15;
470        String fontFamily = null;
471        int typefaceIndex = -1;
472        int styleIndex = -1;
473        boolean allCaps = false;
474
475        final Resources.Theme theme = context.getTheme();
476
477        /*
478         * Look the appearance up without checking first if it exists because
479         * almost every TextView has one and it greatly simplifies the logic
480         * to be able to parse the appearance first and then let specific tags
481         * for this View override it.
482         */
483        TypedArray a = theme.obtainStyledAttributes(
484                    attrs, com.android.internal.R.styleable.TextViewAppearance, defStyle, 0);
485        TypedArray appearance = null;
486        int ap = a.getResourceId(
487                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
488        a.recycle();
489        if (ap != -1) {
490            appearance = theme.obtainStyledAttributes(
491                    ap, com.android.internal.R.styleable.TextAppearance);
492        }
493        if (appearance != null) {
494            int n = appearance.getIndexCount();
495            for (int i = 0; i < n; i++) {
496                int attr = appearance.getIndex(i);
497
498                switch (attr) {
499                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
500                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
501                    break;
502
503                case com.android.internal.R.styleable.TextAppearance_textColor:
504                    textColor = appearance.getColorStateList(attr);
505                    break;
506
507                case com.android.internal.R.styleable.TextAppearance_textColorHint:
508                    textColorHint = appearance.getColorStateList(attr);
509                    break;
510
511                case com.android.internal.R.styleable.TextAppearance_textColorLink:
512                    textColorLink = appearance.getColorStateList(attr);
513                    break;
514
515                case com.android.internal.R.styleable.TextAppearance_textSize:
516                    textSize = appearance.getDimensionPixelSize(attr, textSize);
517                    break;
518
519                case com.android.internal.R.styleable.TextAppearance_typeface:
520                    typefaceIndex = appearance.getInt(attr, -1);
521                    break;
522
523                case com.android.internal.R.styleable.TextAppearance_fontFamily:
524                    fontFamily = appearance.getString(attr);
525                    break;
526
527                case com.android.internal.R.styleable.TextAppearance_textStyle:
528                    styleIndex = appearance.getInt(attr, -1);
529                    break;
530
531                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
532                    allCaps = appearance.getBoolean(attr, false);
533                    break;
534                }
535            }
536
537            appearance.recycle();
538        }
539
540        boolean editable = getDefaultEditable();
541        CharSequence inputMethod = null;
542        int numeric = 0;
543        CharSequence digits = null;
544        boolean phone = false;
545        boolean autotext = false;
546        int autocap = -1;
547        int buffertype = 0;
548        boolean selectallonfocus = false;
549        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
550            drawableBottom = null, drawableStart = null, drawableEnd = null;
551        int drawablePadding = 0;
552        int ellipsize = -1;
553        boolean singleLine = false;
554        int maxlength = -1;
555        CharSequence text = "";
556        CharSequence hint = null;
557        int shadowcolor = 0;
558        float dx = 0, dy = 0, r = 0;
559        boolean password = false;
560        int inputType = EditorInfo.TYPE_NULL;
561
562        a = theme.obtainStyledAttributes(
563                    attrs, com.android.internal.R.styleable.TextView, defStyle, 0);
564
565        int n = a.getIndexCount();
566        for (int i = 0; i < n; i++) {
567            int attr = a.getIndex(i);
568
569            switch (attr) {
570            case com.android.internal.R.styleable.TextView_editable:
571                editable = a.getBoolean(attr, editable);
572                break;
573
574            case com.android.internal.R.styleable.TextView_inputMethod:
575                inputMethod = a.getText(attr);
576                break;
577
578            case com.android.internal.R.styleable.TextView_numeric:
579                numeric = a.getInt(attr, numeric);
580                break;
581
582            case com.android.internal.R.styleable.TextView_digits:
583                digits = a.getText(attr);
584                break;
585
586            case com.android.internal.R.styleable.TextView_phoneNumber:
587                phone = a.getBoolean(attr, phone);
588                break;
589
590            case com.android.internal.R.styleable.TextView_autoText:
591                autotext = a.getBoolean(attr, autotext);
592                break;
593
594            case com.android.internal.R.styleable.TextView_capitalize:
595                autocap = a.getInt(attr, autocap);
596                break;
597
598            case com.android.internal.R.styleable.TextView_bufferType:
599                buffertype = a.getInt(attr, buffertype);
600                break;
601
602            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
603                selectallonfocus = a.getBoolean(attr, selectallonfocus);
604                break;
605
606            case com.android.internal.R.styleable.TextView_autoLink:
607                mAutoLinkMask = a.getInt(attr, 0);
608                break;
609
610            case com.android.internal.R.styleable.TextView_linksClickable:
611                mLinksClickable = a.getBoolean(attr, true);
612                break;
613
614            case com.android.internal.R.styleable.TextView_drawableLeft:
615                drawableLeft = a.getDrawable(attr);
616                break;
617
618            case com.android.internal.R.styleable.TextView_drawableTop:
619                drawableTop = a.getDrawable(attr);
620                break;
621
622            case com.android.internal.R.styleable.TextView_drawableRight:
623                drawableRight = a.getDrawable(attr);
624                break;
625
626            case com.android.internal.R.styleable.TextView_drawableBottom:
627                drawableBottom = a.getDrawable(attr);
628                break;
629
630            case com.android.internal.R.styleable.TextView_drawableStart:
631                drawableStart = a.getDrawable(attr);
632                break;
633
634            case com.android.internal.R.styleable.TextView_drawableEnd:
635                drawableEnd = a.getDrawable(attr);
636                break;
637
638            case com.android.internal.R.styleable.TextView_drawablePadding:
639                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
640                break;
641
642            case com.android.internal.R.styleable.TextView_maxLines:
643                setMaxLines(a.getInt(attr, -1));
644                break;
645
646            case com.android.internal.R.styleable.TextView_maxHeight:
647                setMaxHeight(a.getDimensionPixelSize(attr, -1));
648                break;
649
650            case com.android.internal.R.styleable.TextView_lines:
651                setLines(a.getInt(attr, -1));
652                break;
653
654            case com.android.internal.R.styleable.TextView_height:
655                setHeight(a.getDimensionPixelSize(attr, -1));
656                break;
657
658            case com.android.internal.R.styleable.TextView_minLines:
659                setMinLines(a.getInt(attr, -1));
660                break;
661
662            case com.android.internal.R.styleable.TextView_minHeight:
663                setMinHeight(a.getDimensionPixelSize(attr, -1));
664                break;
665
666            case com.android.internal.R.styleable.TextView_maxEms:
667                setMaxEms(a.getInt(attr, -1));
668                break;
669
670            case com.android.internal.R.styleable.TextView_maxWidth:
671                setMaxWidth(a.getDimensionPixelSize(attr, -1));
672                break;
673
674            case com.android.internal.R.styleable.TextView_ems:
675                setEms(a.getInt(attr, -1));
676                break;
677
678            case com.android.internal.R.styleable.TextView_width:
679                setWidth(a.getDimensionPixelSize(attr, -1));
680                break;
681
682            case com.android.internal.R.styleable.TextView_minEms:
683                setMinEms(a.getInt(attr, -1));
684                break;
685
686            case com.android.internal.R.styleable.TextView_minWidth:
687                setMinWidth(a.getDimensionPixelSize(attr, -1));
688                break;
689
690            case com.android.internal.R.styleable.TextView_gravity:
691                setGravity(a.getInt(attr, -1));
692                break;
693
694            case com.android.internal.R.styleable.TextView_hint:
695                hint = a.getText(attr);
696                break;
697
698            case com.android.internal.R.styleable.TextView_text:
699                text = a.getText(attr);
700                break;
701
702            case com.android.internal.R.styleable.TextView_scrollHorizontally:
703                if (a.getBoolean(attr, false)) {
704                    setHorizontallyScrolling(true);
705                }
706                break;
707
708            case com.android.internal.R.styleable.TextView_singleLine:
709                singleLine = a.getBoolean(attr, singleLine);
710                break;
711
712            case com.android.internal.R.styleable.TextView_ellipsize:
713                ellipsize = a.getInt(attr, ellipsize);
714                break;
715
716            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
717                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
718                break;
719
720            case com.android.internal.R.styleable.TextView_includeFontPadding:
721                if (!a.getBoolean(attr, true)) {
722                    setIncludeFontPadding(false);
723                }
724                break;
725
726            case com.android.internal.R.styleable.TextView_cursorVisible:
727                if (!a.getBoolean(attr, true)) {
728                    setCursorVisible(false);
729                }
730                break;
731
732            case com.android.internal.R.styleable.TextView_maxLength:
733                maxlength = a.getInt(attr, -1);
734                break;
735
736            case com.android.internal.R.styleable.TextView_textScaleX:
737                setTextScaleX(a.getFloat(attr, 1.0f));
738                break;
739
740            case com.android.internal.R.styleable.TextView_freezesText:
741                mFreezesText = a.getBoolean(attr, false);
742                break;
743
744            case com.android.internal.R.styleable.TextView_shadowColor:
745                shadowcolor = a.getInt(attr, 0);
746                break;
747
748            case com.android.internal.R.styleable.TextView_shadowDx:
749                dx = a.getFloat(attr, 0);
750                break;
751
752            case com.android.internal.R.styleable.TextView_shadowDy:
753                dy = a.getFloat(attr, 0);
754                break;
755
756            case com.android.internal.R.styleable.TextView_shadowRadius:
757                r = a.getFloat(attr, 0);
758                break;
759
760            case com.android.internal.R.styleable.TextView_enabled:
761                setEnabled(a.getBoolean(attr, isEnabled()));
762                break;
763
764            case com.android.internal.R.styleable.TextView_textColorHighlight:
765                textColorHighlight = a.getColor(attr, textColorHighlight);
766                break;
767
768            case com.android.internal.R.styleable.TextView_textColor:
769                textColor = a.getColorStateList(attr);
770                break;
771
772            case com.android.internal.R.styleable.TextView_textColorHint:
773                textColorHint = a.getColorStateList(attr);
774                break;
775
776            case com.android.internal.R.styleable.TextView_textColorLink:
777                textColorLink = a.getColorStateList(attr);
778                break;
779
780            case com.android.internal.R.styleable.TextView_textSize:
781                textSize = a.getDimensionPixelSize(attr, textSize);
782                break;
783
784            case com.android.internal.R.styleable.TextView_typeface:
785                typefaceIndex = a.getInt(attr, typefaceIndex);
786                break;
787
788            case com.android.internal.R.styleable.TextView_textStyle:
789                styleIndex = a.getInt(attr, styleIndex);
790                break;
791
792            case com.android.internal.R.styleable.TextView_fontFamily:
793                fontFamily = a.getString(attr);
794                break;
795
796            case com.android.internal.R.styleable.TextView_password:
797                password = a.getBoolean(attr, password);
798                break;
799
800            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
801                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
802                break;
803
804            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
805                mSpacingMult = a.getFloat(attr, mSpacingMult);
806                break;
807
808            case com.android.internal.R.styleable.TextView_inputType:
809                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
810                break;
811
812            case com.android.internal.R.styleable.TextView_imeOptions:
813                createEditorIfNeeded();
814                mEditor.createInputContentTypeIfNeeded();
815                mEditor.mInputContentType.imeOptions = a.getInt(attr,
816                        mEditor.mInputContentType.imeOptions);
817                break;
818
819            case com.android.internal.R.styleable.TextView_imeActionLabel:
820                createEditorIfNeeded();
821                mEditor.createInputContentTypeIfNeeded();
822                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
823                break;
824
825            case com.android.internal.R.styleable.TextView_imeActionId:
826                createEditorIfNeeded();
827                mEditor.createInputContentTypeIfNeeded();
828                mEditor.mInputContentType.imeActionId = a.getInt(attr,
829                        mEditor.mInputContentType.imeActionId);
830                break;
831
832            case com.android.internal.R.styleable.TextView_privateImeOptions:
833                setPrivateImeOptions(a.getString(attr));
834                break;
835
836            case com.android.internal.R.styleable.TextView_editorExtras:
837                try {
838                    setInputExtras(a.getResourceId(attr, 0));
839                } catch (XmlPullParserException e) {
840                    Log.w(LOG_TAG, "Failure reading input extras", e);
841                } catch (IOException e) {
842                    Log.w(LOG_TAG, "Failure reading input extras", e);
843                }
844                break;
845
846            case com.android.internal.R.styleable.TextView_textCursorDrawable:
847                mCursorDrawableRes = a.getResourceId(attr, 0);
848                break;
849
850            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
851                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
852                break;
853
854            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
855                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
856                break;
857
858            case com.android.internal.R.styleable.TextView_textSelectHandle:
859                mTextSelectHandleRes = a.getResourceId(attr, 0);
860                break;
861
862            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
863                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
864                break;
865
866            case com.android.internal.R.styleable.TextView_textIsSelectable:
867                setTextIsSelectable(a.getBoolean(attr, false));
868                break;
869
870            case com.android.internal.R.styleable.TextView_textAllCaps:
871                allCaps = a.getBoolean(attr, false);
872                break;
873            }
874        }
875        a.recycle();
876
877        BufferType bufferType = BufferType.EDITABLE;
878
879        final int variation =
880                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
881        final boolean passwordInputType = variation
882                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
883        final boolean webPasswordInputType = variation
884                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
885        final boolean numberPasswordInputType = variation
886                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
887
888        if (inputMethod != null) {
889            Class<?> c;
890
891            try {
892                c = Class.forName(inputMethod.toString());
893            } catch (ClassNotFoundException ex) {
894                throw new RuntimeException(ex);
895            }
896
897            try {
898                createEditorIfNeeded();
899                mEditor.mKeyListener = (KeyListener) c.newInstance();
900            } catch (InstantiationException ex) {
901                throw new RuntimeException(ex);
902            } catch (IllegalAccessException ex) {
903                throw new RuntimeException(ex);
904            }
905            try {
906                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
907                        ? inputType
908                        : mEditor.mKeyListener.getInputType();
909            } catch (IncompatibleClassChangeError e) {
910                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
911            }
912        } else if (digits != null) {
913            createEditorIfNeeded();
914            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
915            // If no input type was specified, we will default to generic
916            // text, since we can't tell the IME about the set of digits
917            // that was selected.
918            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
919                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
920        } else if (inputType != EditorInfo.TYPE_NULL) {
921            setInputType(inputType, true);
922            // If set, the input type overrides what was set using the deprecated singleLine flag.
923            singleLine = !isMultilineInputType(inputType);
924        } else if (phone) {
925            createEditorIfNeeded();
926            mEditor.mKeyListener = DialerKeyListener.getInstance();
927            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
928        } else if (numeric != 0) {
929            createEditorIfNeeded();
930            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
931                                                   (numeric & DECIMAL) != 0);
932            inputType = EditorInfo.TYPE_CLASS_NUMBER;
933            if ((numeric & SIGNED) != 0) {
934                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
935            }
936            if ((numeric & DECIMAL) != 0) {
937                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
938            }
939            mEditor.mInputType = inputType;
940        } else if (autotext || autocap != -1) {
941            TextKeyListener.Capitalize cap;
942
943            inputType = EditorInfo.TYPE_CLASS_TEXT;
944
945            switch (autocap) {
946            case 1:
947                cap = TextKeyListener.Capitalize.SENTENCES;
948                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
949                break;
950
951            case 2:
952                cap = TextKeyListener.Capitalize.WORDS;
953                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
954                break;
955
956            case 3:
957                cap = TextKeyListener.Capitalize.CHARACTERS;
958                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
959                break;
960
961            default:
962                cap = TextKeyListener.Capitalize.NONE;
963                break;
964            }
965
966            createEditorIfNeeded();
967            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
968            mEditor.mInputType = inputType;
969        } else if (isTextSelectable()) {
970            // Prevent text changes from keyboard.
971            if (mEditor != null) {
972                mEditor.mKeyListener = null;
973                mEditor.mInputType = EditorInfo.TYPE_NULL;
974            }
975            bufferType = BufferType.SPANNABLE;
976            // So that selection can be changed using arrow keys and touch is handled.
977            setMovementMethod(ArrowKeyMovementMethod.getInstance());
978        } else if (editable) {
979            createEditorIfNeeded();
980            mEditor.mKeyListener = TextKeyListener.getInstance();
981            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
982        } else {
983            if (mEditor != null) mEditor.mKeyListener = null;
984
985            switch (buffertype) {
986                case 0:
987                    bufferType = BufferType.NORMAL;
988                    break;
989                case 1:
990                    bufferType = BufferType.SPANNABLE;
991                    break;
992                case 2:
993                    bufferType = BufferType.EDITABLE;
994                    break;
995            }
996        }
997
998        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
999                webPasswordInputType, numberPasswordInputType);
1000
1001        if (selectallonfocus) {
1002            createEditorIfNeeded();
1003            mEditor.mSelectAllOnFocus = true;
1004
1005            if (bufferType == BufferType.NORMAL)
1006                bufferType = BufferType.SPANNABLE;
1007        }
1008
1009        setCompoundDrawablesWithIntrinsicBounds(
1010            drawableLeft, drawableTop, drawableRight, drawableBottom);
1011        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1012        setCompoundDrawablePadding(drawablePadding);
1013
1014        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1015        // of lines of height are unchanged for multi-line TextViews.
1016        setInputTypeSingleLine(singleLine);
1017        applySingleLine(singleLine, singleLine, singleLine);
1018
1019        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1020                ellipsize = 3; // END
1021        }
1022
1023        switch (ellipsize) {
1024            case 1:
1025                setEllipsize(TextUtils.TruncateAt.START);
1026                break;
1027            case 2:
1028                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1029                break;
1030            case 3:
1031                setEllipsize(TextUtils.TruncateAt.END);
1032                break;
1033            case 4:
1034                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1035                    setHorizontalFadingEdgeEnabled(true);
1036                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1037                } else {
1038                    setHorizontalFadingEdgeEnabled(false);
1039                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1040                }
1041                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1042                break;
1043        }
1044
1045        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1046        setHintTextColor(textColorHint);
1047        setLinkTextColor(textColorLink);
1048        if (textColorHighlight != 0) {
1049            setHighlightColor(textColorHighlight);
1050        }
1051        setRawTextSize(textSize);
1052
1053        if (allCaps) {
1054            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1055        }
1056
1057        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1058            setTransformationMethod(PasswordTransformationMethod.getInstance());
1059            typefaceIndex = MONOSPACE;
1060        } else if (mEditor != null &&
1061                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1062                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1063            typefaceIndex = MONOSPACE;
1064        }
1065
1066        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1067
1068        if (shadowcolor != 0) {
1069            setShadowLayer(r, dx, dy, shadowcolor);
1070        }
1071
1072        if (maxlength >= 0) {
1073            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1074        } else {
1075            setFilters(NO_FILTERS);
1076        }
1077
1078        setText(text, bufferType);
1079        if (hint != null) setHint(hint);
1080
1081        /*
1082         * Views are not normally focusable unless specified to be.
1083         * However, TextViews that have input or movement methods *are*
1084         * focusable by default.
1085         */
1086        a = context.obtainStyledAttributes(attrs,
1087                                           com.android.internal.R.styleable.View,
1088                                           defStyle, 0);
1089
1090        boolean focusable = mMovement != null || getKeyListener() != null;
1091        boolean clickable = focusable;
1092        boolean longClickable = focusable;
1093
1094        n = a.getIndexCount();
1095        for (int i = 0; i < n; i++) {
1096            int attr = a.getIndex(i);
1097
1098            switch (attr) {
1099            case com.android.internal.R.styleable.View_focusable:
1100                focusable = a.getBoolean(attr, focusable);
1101                break;
1102
1103            case com.android.internal.R.styleable.View_clickable:
1104                clickable = a.getBoolean(attr, clickable);
1105                break;
1106
1107            case com.android.internal.R.styleable.View_longClickable:
1108                longClickable = a.getBoolean(attr, longClickable);
1109                break;
1110            }
1111        }
1112        a.recycle();
1113
1114        setFocusable(focusable);
1115        setClickable(clickable);
1116        setLongClickable(longClickable);
1117
1118        if (mEditor != null) mEditor.prepareCursorControllers();
1119
1120        // If not explicitly specified this view is important for accessibility.
1121        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1122            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1123        }
1124    }
1125
1126    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1127        Typeface tf = null;
1128        if (familyName != null) {
1129            tf = Typeface.create(familyName, styleIndex);
1130            if (tf != null) {
1131                setTypeface(tf);
1132                return;
1133            }
1134        }
1135        switch (typefaceIndex) {
1136            case SANS:
1137                tf = Typeface.SANS_SERIF;
1138                break;
1139
1140            case SERIF:
1141                tf = Typeface.SERIF;
1142                break;
1143
1144            case MONOSPACE:
1145                tf = Typeface.MONOSPACE;
1146                break;
1147        }
1148
1149        setTypeface(tf, styleIndex);
1150    }
1151
1152    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1153        boolean hasRelativeDrawables = (start != null) || (end != null);
1154        if (hasRelativeDrawables) {
1155            Drawables dr = mDrawables;
1156            if (dr == null) {
1157                mDrawables = dr = new Drawables();
1158            }
1159            final Rect compoundRect = dr.mCompoundRect;
1160            int[] state = getDrawableState();
1161            if (start != null) {
1162                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1163                start.setState(state);
1164                start.copyBounds(compoundRect);
1165                start.setCallback(this);
1166
1167                dr.mDrawableStart = start;
1168                dr.mDrawableSizeStart = compoundRect.width();
1169                dr.mDrawableHeightStart = compoundRect.height();
1170            } else {
1171                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1172            }
1173            if (end != null) {
1174                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1175                end.setState(state);
1176                end.copyBounds(compoundRect);
1177                end.setCallback(this);
1178
1179                dr.mDrawableEnd = end;
1180                dr.mDrawableSizeEnd = compoundRect.width();
1181                dr.mDrawableHeightEnd = compoundRect.height();
1182            } else {
1183                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1184            }
1185        }
1186    }
1187
1188    @Override
1189    public void setEnabled(boolean enabled) {
1190        if (enabled == isEnabled()) {
1191            return;
1192        }
1193
1194        if (!enabled) {
1195            // Hide the soft input if the currently active TextView is disabled
1196            InputMethodManager imm = InputMethodManager.peekInstance();
1197            if (imm != null && imm.isActive(this)) {
1198                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1199            }
1200        }
1201
1202        super.setEnabled(enabled);
1203
1204        if (enabled) {
1205            // Make sure IME is updated with current editor info.
1206            InputMethodManager imm = InputMethodManager.peekInstance();
1207            if (imm != null) imm.restartInput(this);
1208        }
1209
1210        // Will change text color
1211        if (mEditor != null) {
1212            mEditor.invalidateTextDisplayList();
1213            mEditor.prepareCursorControllers();
1214
1215            // start or stop the cursor blinking as appropriate
1216            mEditor.makeBlink();
1217        }
1218    }
1219
1220    /**
1221     * Sets the typeface and style in which the text should be displayed,
1222     * and turns on the fake bold and italic bits in the Paint if the
1223     * Typeface that you provided does not have all the bits in the
1224     * style that you specified.
1225     *
1226     * @attr ref android.R.styleable#TextView_typeface
1227     * @attr ref android.R.styleable#TextView_textStyle
1228     */
1229    public void setTypeface(Typeface tf, int style) {
1230        if (style > 0) {
1231            if (tf == null) {
1232                tf = Typeface.defaultFromStyle(style);
1233            } else {
1234                tf = Typeface.create(tf, style);
1235            }
1236
1237            setTypeface(tf);
1238            // now compute what (if any) algorithmic styling is needed
1239            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1240            int need = style & ~typefaceStyle;
1241            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1242            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1243        } else {
1244            mTextPaint.setFakeBoldText(false);
1245            mTextPaint.setTextSkewX(0);
1246            setTypeface(tf);
1247        }
1248    }
1249
1250    /**
1251     * Subclasses override this to specify that they have a KeyListener
1252     * by default even if not specifically called for in the XML options.
1253     */
1254    protected boolean getDefaultEditable() {
1255        return false;
1256    }
1257
1258    /**
1259     * Subclasses override this to specify a default movement method.
1260     */
1261    protected MovementMethod getDefaultMovementMethod() {
1262        return null;
1263    }
1264
1265    /**
1266     * Return the text the TextView is displaying. If setText() was called with
1267     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1268     * the return value from this method to Spannable or Editable, respectively.
1269     *
1270     * Note: The content of the return value should not be modified. If you want
1271     * a modifiable one, you should make your own copy first.
1272     *
1273     * @attr ref android.R.styleable#TextView_text
1274     */
1275    @ViewDebug.CapturedViewProperty
1276    public CharSequence getText() {
1277        return mText;
1278    }
1279
1280    /**
1281     * Returns the length, in characters, of the text managed by this TextView
1282     */
1283    public int length() {
1284        return mText.length();
1285    }
1286
1287    /**
1288     * Return the text the TextView is displaying as an Editable object.  If
1289     * the text is not editable, null is returned.
1290     *
1291     * @see #getText
1292     */
1293    public Editable getEditableText() {
1294        return (mText instanceof Editable) ? (Editable)mText : null;
1295    }
1296
1297    /**
1298     * @return the height of one standard line in pixels.  Note that markup
1299     * within the text can cause individual lines to be taller or shorter
1300     * than this height, and the layout may contain additional first-
1301     * or last-line padding.
1302     */
1303    public int getLineHeight() {
1304        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1305    }
1306
1307    /**
1308     * @return the Layout that is currently being used to display the text.
1309     * This can be null if the text or width has recently changes.
1310     */
1311    public final Layout getLayout() {
1312        return mLayout;
1313    }
1314
1315    /**
1316     * @return the Layout that is currently being used to display the hint text.
1317     * This can be null.
1318     */
1319    final Layout getHintLayout() {
1320        return mHintLayout;
1321    }
1322
1323    /**
1324     * @return the current key listener for this TextView.
1325     * This will frequently be null for non-EditText TextViews.
1326     *
1327     * @attr ref android.R.styleable#TextView_numeric
1328     * @attr ref android.R.styleable#TextView_digits
1329     * @attr ref android.R.styleable#TextView_phoneNumber
1330     * @attr ref android.R.styleable#TextView_inputMethod
1331     * @attr ref android.R.styleable#TextView_capitalize
1332     * @attr ref android.R.styleable#TextView_autoText
1333     */
1334    public final KeyListener getKeyListener() {
1335        return mEditor == null ? null : mEditor.mKeyListener;
1336    }
1337
1338    /**
1339     * Sets the key listener to be used with this TextView.  This can be null
1340     * to disallow user input.  Note that this method has significant and
1341     * subtle interactions with soft keyboards and other input method:
1342     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1343     * for important details.  Calling this method will replace the current
1344     * content type of the text view with the content type returned by the
1345     * key listener.
1346     * <p>
1347     * Be warned that if you want a TextView with a key listener or movement
1348     * method not to be focusable, or if you want a TextView without a
1349     * key listener or movement method to be focusable, you must call
1350     * {@link #setFocusable} again after calling this to get the focusability
1351     * back the way you want it.
1352     *
1353     * @attr ref android.R.styleable#TextView_numeric
1354     * @attr ref android.R.styleable#TextView_digits
1355     * @attr ref android.R.styleable#TextView_phoneNumber
1356     * @attr ref android.R.styleable#TextView_inputMethod
1357     * @attr ref android.R.styleable#TextView_capitalize
1358     * @attr ref android.R.styleable#TextView_autoText
1359     */
1360    public void setKeyListener(KeyListener input) {
1361        setKeyListenerOnly(input);
1362        fixFocusableAndClickableSettings();
1363
1364        if (input != null) {
1365            createEditorIfNeeded();
1366            try {
1367                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1368            } catch (IncompatibleClassChangeError e) {
1369                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1370            }
1371            // Change inputType, without affecting transformation.
1372            // No need to applySingleLine since mSingleLine is unchanged.
1373            setInputTypeSingleLine(mSingleLine);
1374        } else {
1375            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1376        }
1377
1378        InputMethodManager imm = InputMethodManager.peekInstance();
1379        if (imm != null) imm.restartInput(this);
1380    }
1381
1382    private void setKeyListenerOnly(KeyListener input) {
1383        if (mEditor == null && input == null) return; // null is the default value
1384
1385        createEditorIfNeeded();
1386        if (mEditor.mKeyListener != input) {
1387            mEditor.mKeyListener = input;
1388            if (input != null && !(mText instanceof Editable)) {
1389                setText(mText);
1390            }
1391
1392            setFilters((Editable) mText, mFilters);
1393        }
1394    }
1395
1396    /**
1397     * @return the movement method being used for this TextView.
1398     * This will frequently be null for non-EditText TextViews.
1399     */
1400    public final MovementMethod getMovementMethod() {
1401        return mMovement;
1402    }
1403
1404    /**
1405     * Sets the movement method (arrow key handler) to be used for
1406     * this TextView.  This can be null to disallow using the arrow keys
1407     * to move the cursor or scroll the view.
1408     * <p>
1409     * Be warned that if you want a TextView with a key listener or movement
1410     * method not to be focusable, or if you want a TextView without a
1411     * key listener or movement method to be focusable, you must call
1412     * {@link #setFocusable} again after calling this to get the focusability
1413     * back the way you want it.
1414     */
1415    public final void setMovementMethod(MovementMethod movement) {
1416        if (mMovement != movement) {
1417            mMovement = movement;
1418
1419            if (movement != null && !(mText instanceof Spannable)) {
1420                setText(mText);
1421            }
1422
1423            fixFocusableAndClickableSettings();
1424
1425            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1426            // mMovement
1427            if (mEditor != null) mEditor.prepareCursorControllers();
1428        }
1429    }
1430
1431    private void fixFocusableAndClickableSettings() {
1432        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1433            setFocusable(true);
1434            setClickable(true);
1435            setLongClickable(true);
1436        } else {
1437            setFocusable(false);
1438            setClickable(false);
1439            setLongClickable(false);
1440        }
1441    }
1442
1443    /**
1444     * @return the current transformation method for this TextView.
1445     * This will frequently be null except for single-line and password
1446     * fields.
1447     *
1448     * @attr ref android.R.styleable#TextView_password
1449     * @attr ref android.R.styleable#TextView_singleLine
1450     */
1451    public final TransformationMethod getTransformationMethod() {
1452        return mTransformation;
1453    }
1454
1455    /**
1456     * Sets the transformation that is applied to the text that this
1457     * TextView is displaying.
1458     *
1459     * @attr ref android.R.styleable#TextView_password
1460     * @attr ref android.R.styleable#TextView_singleLine
1461     */
1462    public final void setTransformationMethod(TransformationMethod method) {
1463        if (method == mTransformation) {
1464            // Avoid the setText() below if the transformation is
1465            // the same.
1466            return;
1467        }
1468        if (mTransformation != null) {
1469            if (mText instanceof Spannable) {
1470                ((Spannable) mText).removeSpan(mTransformation);
1471            }
1472        }
1473
1474        mTransformation = method;
1475
1476        if (method instanceof TransformationMethod2) {
1477            TransformationMethod2 method2 = (TransformationMethod2) method;
1478            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1479            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1480        } else {
1481            mAllowTransformationLengthChange = false;
1482        }
1483
1484        setText(mText);
1485
1486        if (hasPasswordTransformationMethod()) {
1487            notifyAccessibilityStateChanged();
1488        }
1489    }
1490
1491    /**
1492     * Returns the top padding of the view, plus space for the top
1493     * Drawable if any.
1494     */
1495    public int getCompoundPaddingTop() {
1496        final Drawables dr = mDrawables;
1497        if (dr == null || dr.mDrawableTop == null) {
1498            return mPaddingTop;
1499        } else {
1500            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1501        }
1502    }
1503
1504    /**
1505     * Returns the bottom padding of the view, plus space for the bottom
1506     * Drawable if any.
1507     */
1508    public int getCompoundPaddingBottom() {
1509        final Drawables dr = mDrawables;
1510        if (dr == null || dr.mDrawableBottom == null) {
1511            return mPaddingBottom;
1512        } else {
1513            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1514        }
1515    }
1516
1517    /**
1518     * Returns the left padding of the view, plus space for the left
1519     * Drawable if any.
1520     */
1521    public int getCompoundPaddingLeft() {
1522        final Drawables dr = mDrawables;
1523        if (dr == null || dr.mDrawableLeft == null) {
1524            return mPaddingLeft;
1525        } else {
1526            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1527        }
1528    }
1529
1530    /**
1531     * Returns the right padding of the view, plus space for the right
1532     * Drawable if any.
1533     */
1534    public int getCompoundPaddingRight() {
1535        final Drawables dr = mDrawables;
1536        if (dr == null || dr.mDrawableRight == null) {
1537            return mPaddingRight;
1538        } else {
1539            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1540        }
1541    }
1542
1543    /**
1544     * Returns the start padding of the view, plus space for the start
1545     * Drawable if any.
1546     */
1547    public int getCompoundPaddingStart() {
1548        resolveDrawables();
1549        switch(getResolvedLayoutDirection()) {
1550            default:
1551            case LAYOUT_DIRECTION_LTR:
1552                return getCompoundPaddingLeft();
1553            case LAYOUT_DIRECTION_RTL:
1554                return getCompoundPaddingRight();
1555        }
1556    }
1557
1558    /**
1559     * Returns the end padding of the view, plus space for the end
1560     * Drawable if any.
1561     */
1562    public int getCompoundPaddingEnd() {
1563        resolveDrawables();
1564        switch(getResolvedLayoutDirection()) {
1565            default:
1566            case LAYOUT_DIRECTION_LTR:
1567                return getCompoundPaddingRight();
1568            case LAYOUT_DIRECTION_RTL:
1569                return getCompoundPaddingLeft();
1570        }
1571    }
1572
1573    /**
1574     * Returns the extended top padding of the view, including both the
1575     * top Drawable if any and any extra space to keep more than maxLines
1576     * of text from showing.  It is only valid to call this after measuring.
1577     */
1578    public int getExtendedPaddingTop() {
1579        if (mMaxMode != LINES) {
1580            return getCompoundPaddingTop();
1581        }
1582
1583        if (mLayout.getLineCount() <= mMaximum) {
1584            return getCompoundPaddingTop();
1585        }
1586
1587        int top = getCompoundPaddingTop();
1588        int bottom = getCompoundPaddingBottom();
1589        int viewht = getHeight() - top - bottom;
1590        int layoutht = mLayout.getLineTop(mMaximum);
1591
1592        if (layoutht >= viewht) {
1593            return top;
1594        }
1595
1596        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1597        if (gravity == Gravity.TOP) {
1598            return top;
1599        } else if (gravity == Gravity.BOTTOM) {
1600            return top + viewht - layoutht;
1601        } else { // (gravity == Gravity.CENTER_VERTICAL)
1602            return top + (viewht - layoutht) / 2;
1603        }
1604    }
1605
1606    /**
1607     * Returns the extended bottom padding of the view, including both the
1608     * bottom Drawable if any and any extra space to keep more than maxLines
1609     * of text from showing.  It is only valid to call this after measuring.
1610     */
1611    public int getExtendedPaddingBottom() {
1612        if (mMaxMode != LINES) {
1613            return getCompoundPaddingBottom();
1614        }
1615
1616        if (mLayout.getLineCount() <= mMaximum) {
1617            return getCompoundPaddingBottom();
1618        }
1619
1620        int top = getCompoundPaddingTop();
1621        int bottom = getCompoundPaddingBottom();
1622        int viewht = getHeight() - top - bottom;
1623        int layoutht = mLayout.getLineTop(mMaximum);
1624
1625        if (layoutht >= viewht) {
1626            return bottom;
1627        }
1628
1629        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1630        if (gravity == Gravity.TOP) {
1631            return bottom + viewht - layoutht;
1632        } else if (gravity == Gravity.BOTTOM) {
1633            return bottom;
1634        } else { // (gravity == Gravity.CENTER_VERTICAL)
1635            return bottom + (viewht - layoutht) / 2;
1636        }
1637    }
1638
1639    /**
1640     * Returns the total left padding of the view, including the left
1641     * Drawable if any.
1642     */
1643    public int getTotalPaddingLeft() {
1644        return getCompoundPaddingLeft();
1645    }
1646
1647    /**
1648     * Returns the total right padding of the view, including the right
1649     * Drawable if any.
1650     */
1651    public int getTotalPaddingRight() {
1652        return getCompoundPaddingRight();
1653    }
1654
1655    /**
1656     * Returns the total start padding of the view, including the start
1657     * Drawable if any.
1658     */
1659    public int getTotalPaddingStart() {
1660        return getCompoundPaddingStart();
1661    }
1662
1663    /**
1664     * Returns the total end padding of the view, including the end
1665     * Drawable if any.
1666     */
1667    public int getTotalPaddingEnd() {
1668        return getCompoundPaddingEnd();
1669    }
1670
1671    /**
1672     * Returns the total top padding of the view, including the top
1673     * Drawable if any, the extra space to keep more than maxLines
1674     * from showing, and the vertical offset for gravity, if any.
1675     */
1676    public int getTotalPaddingTop() {
1677        return getExtendedPaddingTop() + getVerticalOffset(true);
1678    }
1679
1680    /**
1681     * Returns the total bottom padding of the view, including the bottom
1682     * Drawable if any, the extra space to keep more than maxLines
1683     * from showing, and the vertical offset for gravity, if any.
1684     */
1685    public int getTotalPaddingBottom() {
1686        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1687    }
1688
1689    /**
1690     * Sets the Drawables (if any) to appear to the left of, above,
1691     * to the right of, and below the text.  Use null if you do not
1692     * want a Drawable there.  The Drawables must already have had
1693     * {@link Drawable#setBounds} called.
1694     *
1695     * @attr ref android.R.styleable#TextView_drawableLeft
1696     * @attr ref android.R.styleable#TextView_drawableTop
1697     * @attr ref android.R.styleable#TextView_drawableRight
1698     * @attr ref android.R.styleable#TextView_drawableBottom
1699     */
1700    public void setCompoundDrawables(Drawable left, Drawable top,
1701                                     Drawable right, Drawable bottom) {
1702        Drawables dr = mDrawables;
1703
1704        final boolean drawables = left != null || top != null
1705                || right != null || bottom != null;
1706
1707        if (!drawables) {
1708            // Clearing drawables...  can we free the data structure?
1709            if (dr != null) {
1710                if (dr.mDrawablePadding == 0) {
1711                    mDrawables = null;
1712                } else {
1713                    // We need to retain the last set padding, so just clear
1714                    // out all of the fields in the existing structure.
1715                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
1716                    dr.mDrawableLeft = null;
1717                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1718                    dr.mDrawableTop = null;
1719                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
1720                    dr.mDrawableRight = null;
1721                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1722                    dr.mDrawableBottom = null;
1723                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1724                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1725                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1726                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1727                }
1728            }
1729        } else {
1730            if (dr == null) {
1731                mDrawables = dr = new Drawables();
1732            }
1733
1734            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
1735                dr.mDrawableLeft.setCallback(null);
1736            }
1737            dr.mDrawableLeft = left;
1738
1739            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1740                dr.mDrawableTop.setCallback(null);
1741            }
1742            dr.mDrawableTop = top;
1743
1744            if (dr.mDrawableRight != right && dr.mDrawableRight != null) {
1745                dr.mDrawableRight.setCallback(null);
1746            }
1747            dr.mDrawableRight = right;
1748
1749            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1750                dr.mDrawableBottom.setCallback(null);
1751            }
1752            dr.mDrawableBottom = bottom;
1753
1754            final Rect compoundRect = dr.mCompoundRect;
1755            int[] state;
1756
1757            state = getDrawableState();
1758
1759            if (left != null) {
1760                left.setState(state);
1761                left.copyBounds(compoundRect);
1762                left.setCallback(this);
1763                dr.mDrawableSizeLeft = compoundRect.width();
1764                dr.mDrawableHeightLeft = compoundRect.height();
1765            } else {
1766                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1767            }
1768
1769            if (right != null) {
1770                right.setState(state);
1771                right.copyBounds(compoundRect);
1772                right.setCallback(this);
1773                dr.mDrawableSizeRight = compoundRect.width();
1774                dr.mDrawableHeightRight = compoundRect.height();
1775            } else {
1776                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1777            }
1778
1779            if (top != null) {
1780                top.setState(state);
1781                top.copyBounds(compoundRect);
1782                top.setCallback(this);
1783                dr.mDrawableSizeTop = compoundRect.height();
1784                dr.mDrawableWidthTop = compoundRect.width();
1785            } else {
1786                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1787            }
1788
1789            if (bottom != null) {
1790                bottom.setState(state);
1791                bottom.copyBounds(compoundRect);
1792                bottom.setCallback(this);
1793                dr.mDrawableSizeBottom = compoundRect.height();
1794                dr.mDrawableWidthBottom = compoundRect.width();
1795            } else {
1796                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1797            }
1798        }
1799
1800        invalidate();
1801        requestLayout();
1802    }
1803
1804    /**
1805     * Sets the Drawables (if any) to appear to the left of, above,
1806     * to the right of, and below the text.  Use 0 if you do not
1807     * want a Drawable there. The Drawables' bounds will be set to
1808     * their intrinsic bounds.
1809     *
1810     * @param left Resource identifier of the left Drawable.
1811     * @param top Resource identifier of the top Drawable.
1812     * @param right Resource identifier of the right Drawable.
1813     * @param bottom Resource identifier of the bottom Drawable.
1814     *
1815     * @attr ref android.R.styleable#TextView_drawableLeft
1816     * @attr ref android.R.styleable#TextView_drawableTop
1817     * @attr ref android.R.styleable#TextView_drawableRight
1818     * @attr ref android.R.styleable#TextView_drawableBottom
1819     */
1820    @android.view.RemotableViewMethod
1821    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1822        final Resources resources = getContext().getResources();
1823        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null,
1824                top != 0 ? resources.getDrawable(top) : null,
1825                right != 0 ? resources.getDrawable(right) : null,
1826                bottom != 0 ? resources.getDrawable(bottom) : null);
1827    }
1828
1829    /**
1830     * Sets the Drawables (if any) to appear to the left of, above,
1831     * to the right of, and below the text.  Use null if you do not
1832     * want a Drawable there. The Drawables' bounds will be set to
1833     * their intrinsic bounds.
1834     *
1835     * @attr ref android.R.styleable#TextView_drawableLeft
1836     * @attr ref android.R.styleable#TextView_drawableTop
1837     * @attr ref android.R.styleable#TextView_drawableRight
1838     * @attr ref android.R.styleable#TextView_drawableBottom
1839     */
1840    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1841            Drawable right, Drawable bottom) {
1842
1843        if (left != null) {
1844            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1845        }
1846        if (right != null) {
1847            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1848        }
1849        if (top != null) {
1850            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1851        }
1852        if (bottom != null) {
1853            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
1854        }
1855        setCompoundDrawables(left, top, right, bottom);
1856    }
1857
1858    /**
1859     * Sets the Drawables (if any) to appear to the start of, above,
1860     * to the end of, and below the text.  Use null if you do not
1861     * want a Drawable there.  The Drawables must already have had
1862     * {@link Drawable#setBounds} called.
1863     *
1864     * @attr ref android.R.styleable#TextView_drawableStart
1865     * @attr ref android.R.styleable#TextView_drawableTop
1866     * @attr ref android.R.styleable#TextView_drawableEnd
1867     * @attr ref android.R.styleable#TextView_drawableBottom
1868     */
1869    public void setCompoundDrawablesRelative(Drawable start, Drawable top,
1870                                     Drawable end, Drawable bottom) {
1871        Drawables dr = mDrawables;
1872
1873        final boolean drawables = start != null || top != null
1874                || end != null || bottom != null;
1875
1876        if (!drawables) {
1877            // Clearing drawables...  can we free the data structure?
1878            if (dr != null) {
1879                if (dr.mDrawablePadding == 0) {
1880                    mDrawables = null;
1881                } else {
1882                    // We need to retain the last set padding, so just clear
1883                    // out all of the fields in the existing structure.
1884                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
1885                    dr.mDrawableStart = null;
1886                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1887                    dr.mDrawableTop = null;
1888                    if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
1889                    dr.mDrawableEnd = null;
1890                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1891                    dr.mDrawableBottom = null;
1892                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1893                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1894                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1895                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1896                }
1897            }
1898        } else {
1899            if (dr == null) {
1900                mDrawables = dr = new Drawables();
1901            }
1902
1903            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
1904                dr.mDrawableStart.setCallback(null);
1905            }
1906            dr.mDrawableStart = start;
1907
1908            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1909                dr.mDrawableTop.setCallback(null);
1910            }
1911            dr.mDrawableTop = top;
1912
1913            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
1914                dr.mDrawableEnd.setCallback(null);
1915            }
1916            dr.mDrawableEnd = end;
1917
1918            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1919                dr.mDrawableBottom.setCallback(null);
1920            }
1921            dr.mDrawableBottom = bottom;
1922
1923            final Rect compoundRect = dr.mCompoundRect;
1924            int[] state;
1925
1926            state = getDrawableState();
1927
1928            if (start != null) {
1929                start.setState(state);
1930                start.copyBounds(compoundRect);
1931                start.setCallback(this);
1932                dr.mDrawableSizeStart = compoundRect.width();
1933                dr.mDrawableHeightStart = compoundRect.height();
1934            } else {
1935                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1936            }
1937
1938            if (end != null) {
1939                end.setState(state);
1940                end.copyBounds(compoundRect);
1941                end.setCallback(this);
1942                dr.mDrawableSizeEnd = compoundRect.width();
1943                dr.mDrawableHeightEnd = compoundRect.height();
1944            } else {
1945                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1946            }
1947
1948            if (top != null) {
1949                top.setState(state);
1950                top.copyBounds(compoundRect);
1951                top.setCallback(this);
1952                dr.mDrawableSizeTop = compoundRect.height();
1953                dr.mDrawableWidthTop = compoundRect.width();
1954            } else {
1955                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1956            }
1957
1958            if (bottom != null) {
1959                bottom.setState(state);
1960                bottom.copyBounds(compoundRect);
1961                bottom.setCallback(this);
1962                dr.mDrawableSizeBottom = compoundRect.height();
1963                dr.mDrawableWidthBottom = compoundRect.width();
1964            } else {
1965                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1966            }
1967        }
1968
1969        resolveDrawables();
1970        invalidate();
1971        requestLayout();
1972    }
1973
1974    /**
1975     * Sets the Drawables (if any) to appear to the start of, above,
1976     * to the end of, and below the text.  Use 0 if you do not
1977     * want a Drawable there. The Drawables' bounds will be set to
1978     * their intrinsic bounds.
1979     *
1980     * @param start Resource identifier of the start Drawable.
1981     * @param top Resource identifier of the top Drawable.
1982     * @param end Resource identifier of the end Drawable.
1983     * @param bottom Resource identifier of the bottom Drawable.
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    @android.view.RemotableViewMethod
1991    public void setCompoundDrawablesRelativeWithIntrinsicBounds(int start, int top, int end,
1992            int bottom) {
1993        resetResolvedDrawables();
1994        final Resources resources = getContext().getResources();
1995        setCompoundDrawablesRelativeWithIntrinsicBounds(
1996                start != 0 ? resources.getDrawable(start) : null,
1997                top != 0 ? resources.getDrawable(top) : null,
1998                end != 0 ? resources.getDrawable(end) : null,
1999                bottom != 0 ? resources.getDrawable(bottom) : null);
2000    }
2001
2002    /**
2003     * Sets the Drawables (if any) to appear to the start of, above,
2004     * to the end of, and below the text.  Use null if you do not
2005     * want a Drawable there. The Drawables' bounds will be set to
2006     * their intrinsic bounds.
2007     *
2008     * @attr ref android.R.styleable#TextView_drawableStart
2009     * @attr ref android.R.styleable#TextView_drawableTop
2010     * @attr ref android.R.styleable#TextView_drawableEnd
2011     * @attr ref android.R.styleable#TextView_drawableBottom
2012     */
2013    public void setCompoundDrawablesRelativeWithIntrinsicBounds(Drawable start, Drawable top,
2014            Drawable end, Drawable bottom) {
2015
2016        resetResolvedDrawables();
2017        if (start != null) {
2018            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2019        }
2020        if (end != null) {
2021            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2022        }
2023        if (top != null) {
2024            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2025        }
2026        if (bottom != null) {
2027            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2028        }
2029        setCompoundDrawablesRelative(start, top, end, bottom);
2030    }
2031
2032    /**
2033     * Returns drawables for the left, top, right, and bottom borders.
2034     *
2035     * @attr ref android.R.styleable#TextView_drawableLeft
2036     * @attr ref android.R.styleable#TextView_drawableTop
2037     * @attr ref android.R.styleable#TextView_drawableRight
2038     * @attr ref android.R.styleable#TextView_drawableBottom
2039     */
2040    public Drawable[] getCompoundDrawables() {
2041        final Drawables dr = mDrawables;
2042        if (dr != null) {
2043            return new Drawable[] {
2044                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
2045            };
2046        } else {
2047            return new Drawable[] { null, null, null, null };
2048        }
2049    }
2050
2051    /**
2052     * Returns drawables for the start, top, end, and bottom borders.
2053     *
2054     * @attr ref android.R.styleable#TextView_drawableStart
2055     * @attr ref android.R.styleable#TextView_drawableTop
2056     * @attr ref android.R.styleable#TextView_drawableEnd
2057     * @attr ref android.R.styleable#TextView_drawableBottom
2058     */
2059    public Drawable[] getCompoundDrawablesRelative() {
2060        final Drawables dr = mDrawables;
2061        if (dr != null) {
2062            return new Drawable[] {
2063                dr.mDrawableStart, dr.mDrawableTop, dr.mDrawableEnd, dr.mDrawableBottom
2064            };
2065        } else {
2066            return new Drawable[] { null, null, null, null };
2067        }
2068    }
2069
2070    /**
2071     * Sets the size of the padding between the compound drawables and
2072     * the text.
2073     *
2074     * @attr ref android.R.styleable#TextView_drawablePadding
2075     */
2076    @android.view.RemotableViewMethod
2077    public void setCompoundDrawablePadding(int pad) {
2078        Drawables dr = mDrawables;
2079        if (pad == 0) {
2080            if (dr != null) {
2081                dr.mDrawablePadding = pad;
2082            }
2083        } else {
2084            if (dr == null) {
2085                mDrawables = dr = new Drawables();
2086            }
2087            dr.mDrawablePadding = pad;
2088        }
2089
2090        invalidate();
2091        requestLayout();
2092    }
2093
2094    /**
2095     * Returns the padding between the compound drawables and the text.
2096     *
2097     * @attr ref android.R.styleable#TextView_drawablePadding
2098     */
2099    public int getCompoundDrawablePadding() {
2100        final Drawables dr = mDrawables;
2101        return dr != null ? dr.mDrawablePadding : 0;
2102    }
2103
2104    @Override
2105    public void setPadding(int left, int top, int right, int bottom) {
2106        if (left != mPaddingLeft ||
2107            right != mPaddingRight ||
2108            top != mPaddingTop ||
2109            bottom != mPaddingBottom) {
2110            nullLayouts();
2111        }
2112
2113        // the super call will requestLayout()
2114        super.setPadding(left, top, right, bottom);
2115        invalidate();
2116    }
2117
2118    @Override
2119    public void setPaddingRelative(int start, int top, int end, int bottom) {
2120        if (start != getPaddingStart() ||
2121            end != getPaddingEnd() ||
2122            top != mPaddingTop ||
2123            bottom != mPaddingBottom) {
2124            nullLayouts();
2125        }
2126
2127        // the super call will requestLayout()
2128        super.setPaddingRelative(start, top, end, bottom);
2129        invalidate();
2130    }
2131
2132    /**
2133     * Gets the autolink mask of the text.  See {@link
2134     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2135     * possible values.
2136     *
2137     * @attr ref android.R.styleable#TextView_autoLink
2138     */
2139    public final int getAutoLinkMask() {
2140        return mAutoLinkMask;
2141    }
2142
2143    /**
2144     * Sets the text color, size, style, hint color, and highlight color
2145     * from the specified TextAppearance resource.
2146     */
2147    public void setTextAppearance(Context context, int resid) {
2148        TypedArray appearance =
2149            context.obtainStyledAttributes(resid,
2150                                           com.android.internal.R.styleable.TextAppearance);
2151
2152        int color;
2153        ColorStateList colors;
2154        int ts;
2155
2156        color = appearance.getColor(
2157                com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
2158        if (color != 0) {
2159            setHighlightColor(color);
2160        }
2161
2162        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2163                                              TextAppearance_textColor);
2164        if (colors != null) {
2165            setTextColor(colors);
2166        }
2167
2168        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
2169                                              TextAppearance_textSize, 0);
2170        if (ts != 0) {
2171            setRawTextSize(ts);
2172        }
2173
2174        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2175                                              TextAppearance_textColorHint);
2176        if (colors != null) {
2177            setHintTextColor(colors);
2178        }
2179
2180        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2181                                              TextAppearance_textColorLink);
2182        if (colors != null) {
2183            setLinkTextColor(colors);
2184        }
2185
2186        String familyName;
2187        int typefaceIndex, styleIndex;
2188
2189        familyName = appearance.getString(com.android.internal.R.styleable.
2190                                          TextAppearance_fontFamily);
2191        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
2192                                          TextAppearance_typeface, -1);
2193        styleIndex = appearance.getInt(com.android.internal.R.styleable.
2194                                       TextAppearance_textStyle, -1);
2195
2196        setTypefaceFromAttrs(familyName, typefaceIndex, styleIndex);
2197
2198        if (appearance.getBoolean(com.android.internal.R.styleable.TextAppearance_textAllCaps,
2199                false)) {
2200            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2201        }
2202
2203        appearance.recycle();
2204    }
2205
2206    /**
2207     * Get the default {@link Locale} of the text in this TextView.
2208     * @return the default {@link Locale} of the text in this TextView.
2209     */
2210    public Locale getTextLocale() {
2211        return mTextPaint.getTextLocale();
2212    }
2213
2214    /**
2215     * Set the default {@link Locale} of the text in this TextView to the given value. This value
2216     * is used to choose appropriate typefaces for ambiguous characters. Typically used for CJK
2217     * locales to disambiguate Hanzi/Kanji/Hanja characters.
2218     *
2219     * @param locale the {@link Locale} for drawing text, must not be null.
2220     *
2221     * @see Paint#setTextLocale
2222     */
2223    public void setTextLocale(Locale locale) {
2224        mTextPaint.setTextLocale(locale);
2225    }
2226
2227    /**
2228     * @return the size (in pixels) of the default text size in this TextView.
2229     */
2230    @ViewDebug.ExportedProperty(category = "text")
2231    public float getTextSize() {
2232        return mTextPaint.getTextSize();
2233    }
2234
2235    /**
2236     * Set the default text size to the given value, interpreted as "scaled
2237     * pixel" units.  This size is adjusted based on the current density and
2238     * user font size preference.
2239     *
2240     * @param size The scaled pixel size.
2241     *
2242     * @attr ref android.R.styleable#TextView_textSize
2243     */
2244    @android.view.RemotableViewMethod
2245    public void setTextSize(float size) {
2246        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2247    }
2248
2249    /**
2250     * Set the default text size to a given unit and value.  See {@link
2251     * TypedValue} for the possible dimension units.
2252     *
2253     * @param unit The desired dimension unit.
2254     * @param size The desired size in the given units.
2255     *
2256     * @attr ref android.R.styleable#TextView_textSize
2257     */
2258    public void setTextSize(int unit, float size) {
2259        Context c = getContext();
2260        Resources r;
2261
2262        if (c == null)
2263            r = Resources.getSystem();
2264        else
2265            r = c.getResources();
2266
2267        setRawTextSize(TypedValue.applyDimension(
2268            unit, size, r.getDisplayMetrics()));
2269    }
2270
2271    private void setRawTextSize(float size) {
2272        if (size != mTextPaint.getTextSize()) {
2273            mTextPaint.setTextSize(size);
2274
2275            if (mLayout != null) {
2276                nullLayouts();
2277                requestLayout();
2278                invalidate();
2279            }
2280        }
2281    }
2282
2283    /**
2284     * @return the extent by which text is currently being stretched
2285     * horizontally.  This will usually be 1.
2286     */
2287    public float getTextScaleX() {
2288        return mTextPaint.getTextScaleX();
2289    }
2290
2291    /**
2292     * Sets the extent by which text should be stretched horizontally.
2293     *
2294     * @attr ref android.R.styleable#TextView_textScaleX
2295     */
2296    @android.view.RemotableViewMethod
2297    public void setTextScaleX(float size) {
2298        if (size != mTextPaint.getTextScaleX()) {
2299            mUserSetTextScaleX = true;
2300            mTextPaint.setTextScaleX(size);
2301
2302            if (mLayout != null) {
2303                nullLayouts();
2304                requestLayout();
2305                invalidate();
2306            }
2307        }
2308    }
2309
2310    /**
2311     * Sets the typeface and style in which the text should be displayed.
2312     * Note that not all Typeface families actually have bold and italic
2313     * variants, so you may need to use
2314     * {@link #setTypeface(Typeface, int)} to get the appearance
2315     * that you actually want.
2316     *
2317     * @see #getTypeface()
2318     *
2319     * @attr ref android.R.styleable#TextView_fontFamily
2320     * @attr ref android.R.styleable#TextView_typeface
2321     * @attr ref android.R.styleable#TextView_textStyle
2322     */
2323    public void setTypeface(Typeface tf) {
2324        if (mTextPaint.getTypeface() != tf) {
2325            mTextPaint.setTypeface(tf);
2326
2327            if (mLayout != null) {
2328                nullLayouts();
2329                requestLayout();
2330                invalidate();
2331            }
2332        }
2333    }
2334
2335    /**
2336     * @return the current typeface and style in which the text is being
2337     * displayed.
2338     *
2339     * @see #setTypeface(Typeface)
2340     *
2341     * @attr ref android.R.styleable#TextView_fontFamily
2342     * @attr ref android.R.styleable#TextView_typeface
2343     * @attr ref android.R.styleable#TextView_textStyle
2344     */
2345    public Typeface getTypeface() {
2346        return mTextPaint.getTypeface();
2347    }
2348
2349    /**
2350     * Sets the text color for all the states (normal, selected,
2351     * focused) to be this color.
2352     *
2353     * @see #setTextColor(ColorStateList)
2354     * @see #getTextColors()
2355     *
2356     * @attr ref android.R.styleable#TextView_textColor
2357     */
2358    @android.view.RemotableViewMethod
2359    public void setTextColor(int color) {
2360        mTextColor = ColorStateList.valueOf(color);
2361        updateTextColors();
2362    }
2363
2364    /**
2365     * Sets the text color.
2366     *
2367     * @see #setTextColor(int)
2368     * @see #getTextColors()
2369     * @see #setHintTextColor(ColorStateList)
2370     * @see #setLinkTextColor(ColorStateList)
2371     *
2372     * @attr ref android.R.styleable#TextView_textColor
2373     */
2374    public void setTextColor(ColorStateList colors) {
2375        if (colors == null) {
2376            throw new NullPointerException();
2377        }
2378
2379        mTextColor = colors;
2380        updateTextColors();
2381    }
2382
2383    /**
2384     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
2385     *
2386     * @see #setTextColor(ColorStateList)
2387     * @see #setTextColor(int)
2388     *
2389     * @attr ref android.R.styleable#TextView_textColor
2390     */
2391    public final ColorStateList getTextColors() {
2392        return mTextColor;
2393    }
2394
2395    /**
2396     * <p>Return the current color selected for normal text.</p>
2397     *
2398     * @return Returns the current text color.
2399     */
2400    public final int getCurrentTextColor() {
2401        return mCurTextColor;
2402    }
2403
2404    /**
2405     * Sets the color used to display the selection highlight.
2406     *
2407     * @attr ref android.R.styleable#TextView_textColorHighlight
2408     */
2409    @android.view.RemotableViewMethod
2410    public void setHighlightColor(int color) {
2411        if (mHighlightColor != color) {
2412            mHighlightColor = color;
2413            invalidate();
2414        }
2415    }
2416
2417    /**
2418     * @return the color used to display the selection highlight
2419     *
2420     * @see #setHighlightColor(int)
2421     *
2422     * @attr ref android.R.styleable#TextView_textColorHighlight
2423     */
2424    public int getHighlightColor() {
2425        return mHighlightColor;
2426    }
2427
2428    /**
2429     * Sets whether the soft input method will be made visible when this
2430     * TextView gets focused. The default is true.
2431     * @hide
2432     */
2433    @android.view.RemotableViewMethod
2434    public final void setShowSoftInputOnFocus(boolean show) {
2435        createEditorIfNeeded();
2436        mEditor.mShowSoftInputOnFocus = show;
2437    }
2438
2439    /**
2440     * Returns whether the soft input method will be made visible when this
2441     * TextView gets focused. The default is true.
2442     * @hide
2443     */
2444    public final boolean getShowSoftInputOnFocus() {
2445        // When there is no Editor, return default true value
2446        return mEditor == null || mEditor.mShowSoftInputOnFocus;
2447    }
2448
2449    /**
2450     * Gives the text a shadow of the specified radius and color, the specified
2451     * distance from its normal position.
2452     *
2453     * @attr ref android.R.styleable#TextView_shadowColor
2454     * @attr ref android.R.styleable#TextView_shadowDx
2455     * @attr ref android.R.styleable#TextView_shadowDy
2456     * @attr ref android.R.styleable#TextView_shadowRadius
2457     */
2458    public void setShadowLayer(float radius, float dx, float dy, int color) {
2459        mTextPaint.setShadowLayer(radius, dx, dy, color);
2460
2461        mShadowRadius = radius;
2462        mShadowDx = dx;
2463        mShadowDy = dy;
2464
2465        // Will change text clip region
2466        if (mEditor != null) mEditor.invalidateTextDisplayList();
2467        invalidate();
2468    }
2469
2470    /**
2471     * Gets the radius of the shadow layer.
2472     *
2473     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
2474     *
2475     * @see #setShadowLayer(float, float, float, int)
2476     *
2477     * @attr ref android.R.styleable#TextView_shadowRadius
2478     */
2479    public float getShadowRadius() {
2480        return mShadowRadius;
2481    }
2482
2483    /**
2484     * @return the horizontal offset of the shadow layer
2485     *
2486     * @see #setShadowLayer(float, float, float, int)
2487     *
2488     * @attr ref android.R.styleable#TextView_shadowDx
2489     */
2490    public float getShadowDx() {
2491        return mShadowDx;
2492    }
2493
2494    /**
2495     * @return the vertical offset of the shadow layer
2496     *
2497     * @see #setShadowLayer(float, float, float, int)
2498     *
2499     * @attr ref android.R.styleable#TextView_shadowDy
2500     */
2501    public float getShadowDy() {
2502        return mShadowDy;
2503    }
2504
2505    /**
2506     * @return the color of the shadow layer
2507     *
2508     * @see #setShadowLayer(float, float, float, int)
2509     *
2510     * @attr ref android.R.styleable#TextView_shadowColor
2511     */
2512    public int getShadowColor() {
2513        return mTextPaint.shadowColor;
2514    }
2515
2516    /**
2517     * @return the base paint used for the text.  Please use this only to
2518     * consult the Paint's properties and not to change them.
2519     */
2520    public TextPaint getPaint() {
2521        return mTextPaint;
2522    }
2523
2524    /**
2525     * Sets the autolink mask of the text.  See {@link
2526     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2527     * possible values.
2528     *
2529     * @attr ref android.R.styleable#TextView_autoLink
2530     */
2531    @android.view.RemotableViewMethod
2532    public final void setAutoLinkMask(int mask) {
2533        mAutoLinkMask = mask;
2534    }
2535
2536    /**
2537     * Sets whether the movement method will automatically be set to
2538     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2539     * set to nonzero and links are detected in {@link #setText}.
2540     * The default is true.
2541     *
2542     * @attr ref android.R.styleable#TextView_linksClickable
2543     */
2544    @android.view.RemotableViewMethod
2545    public final void setLinksClickable(boolean whether) {
2546        mLinksClickable = whether;
2547    }
2548
2549    /**
2550     * Returns whether the movement method will automatically be set to
2551     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2552     * set to nonzero and links are detected in {@link #setText}.
2553     * The default is true.
2554     *
2555     * @attr ref android.R.styleable#TextView_linksClickable
2556     */
2557    public final boolean getLinksClickable() {
2558        return mLinksClickable;
2559    }
2560
2561    /**
2562     * Returns the list of URLSpans attached to the text
2563     * (by {@link Linkify} or otherwise) if any.  You can call
2564     * {@link URLSpan#getURL} on them to find where they link to
2565     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
2566     * to find the region of the text they are attached to.
2567     */
2568    public URLSpan[] getUrls() {
2569        if (mText instanceof Spanned) {
2570            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
2571        } else {
2572            return new URLSpan[0];
2573        }
2574    }
2575
2576    /**
2577     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
2578     * TextView.
2579     *
2580     * @see #setHintTextColor(ColorStateList)
2581     * @see #getHintTextColors()
2582     * @see #setTextColor(int)
2583     *
2584     * @attr ref android.R.styleable#TextView_textColorHint
2585     */
2586    @android.view.RemotableViewMethod
2587    public final void setHintTextColor(int color) {
2588        mHintTextColor = ColorStateList.valueOf(color);
2589        updateTextColors();
2590    }
2591
2592    /**
2593     * Sets the color of the hint text.
2594     *
2595     * @see #getHintTextColors()
2596     * @see #setHintTextColor(int)
2597     * @see #setTextColor(ColorStateList)
2598     * @see #setLinkTextColor(ColorStateList)
2599     *
2600     * @attr ref android.R.styleable#TextView_textColorHint
2601     */
2602    public final void setHintTextColor(ColorStateList colors) {
2603        mHintTextColor = colors;
2604        updateTextColors();
2605    }
2606
2607    /**
2608     * @return the color of the hint text, for the different states of this TextView.
2609     *
2610     * @see #setHintTextColor(ColorStateList)
2611     * @see #setHintTextColor(int)
2612     * @see #setTextColor(ColorStateList)
2613     * @see #setLinkTextColor(ColorStateList)
2614     *
2615     * @attr ref android.R.styleable#TextView_textColorHint
2616     */
2617    public final ColorStateList getHintTextColors() {
2618        return mHintTextColor;
2619    }
2620
2621    /**
2622     * <p>Return the current color selected to paint the hint text.</p>
2623     *
2624     * @return Returns the current hint text color.
2625     */
2626    public final int getCurrentHintTextColor() {
2627        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
2628    }
2629
2630    /**
2631     * Sets the color of links in the text.
2632     *
2633     * @see #setLinkTextColor(ColorStateList)
2634     * @see #getLinkTextColors()
2635     *
2636     * @attr ref android.R.styleable#TextView_textColorLink
2637     */
2638    @android.view.RemotableViewMethod
2639    public final void setLinkTextColor(int color) {
2640        mLinkTextColor = ColorStateList.valueOf(color);
2641        updateTextColors();
2642    }
2643
2644    /**
2645     * Sets the color of links in the text.
2646     *
2647     * @see #setLinkTextColor(int)
2648     * @see #getLinkTextColors()
2649     * @see #setTextColor(ColorStateList)
2650     * @see #setHintTextColor(ColorStateList)
2651     *
2652     * @attr ref android.R.styleable#TextView_textColorLink
2653     */
2654    public final void setLinkTextColor(ColorStateList colors) {
2655        mLinkTextColor = colors;
2656        updateTextColors();
2657    }
2658
2659    /**
2660     * @return the list of colors used to paint the links in the text, for the different states of
2661     * this TextView
2662     *
2663     * @see #setLinkTextColor(ColorStateList)
2664     * @see #setLinkTextColor(int)
2665     *
2666     * @attr ref android.R.styleable#TextView_textColorLink
2667     */
2668    public final ColorStateList getLinkTextColors() {
2669        return mLinkTextColor;
2670    }
2671
2672    /**
2673     * Sets the horizontal alignment of the text and the
2674     * vertical gravity that will be used when there is extra space
2675     * in the TextView beyond what is required for the text itself.
2676     *
2677     * @see android.view.Gravity
2678     * @attr ref android.R.styleable#TextView_gravity
2679     */
2680    public void setGravity(int gravity) {
2681        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
2682            gravity |= Gravity.START;
2683        }
2684        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
2685            gravity |= Gravity.TOP;
2686        }
2687
2688        boolean newLayout = false;
2689
2690        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
2691            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
2692            newLayout = true;
2693        }
2694
2695        if (gravity != mGravity) {
2696            invalidate();
2697            mLayoutAlignment = null;
2698        }
2699
2700        mGravity = gravity;
2701
2702        if (mLayout != null && newLayout) {
2703            // XXX this is heavy-handed because no actual content changes.
2704            int want = mLayout.getWidth();
2705            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
2706
2707            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
2708                          mRight - mLeft - getCompoundPaddingLeft() -
2709                          getCompoundPaddingRight(), true);
2710        }
2711    }
2712
2713    /**
2714     * Returns the horizontal and vertical alignment of this TextView.
2715     *
2716     * @see android.view.Gravity
2717     * @attr ref android.R.styleable#TextView_gravity
2718     */
2719    public int getGravity() {
2720        return mGravity;
2721    }
2722
2723    /**
2724     * @return the flags on the Paint being used to display the text.
2725     * @see Paint#getFlags
2726     */
2727    public int getPaintFlags() {
2728        return mTextPaint.getFlags();
2729    }
2730
2731    /**
2732     * Sets flags on the Paint being used to display the text and
2733     * reflows the text if they are different from the old flags.
2734     * @see Paint#setFlags
2735     */
2736    @android.view.RemotableViewMethod
2737    public void setPaintFlags(int flags) {
2738        if (mTextPaint.getFlags() != flags) {
2739            mTextPaint.setFlags(flags);
2740
2741            if (mLayout != null) {
2742                nullLayouts();
2743                requestLayout();
2744                invalidate();
2745            }
2746        }
2747    }
2748
2749    /**
2750     * Sets whether the text should be allowed to be wider than the
2751     * View is.  If false, it will be wrapped to the width of the View.
2752     *
2753     * @attr ref android.R.styleable#TextView_scrollHorizontally
2754     */
2755    public void setHorizontallyScrolling(boolean whether) {
2756        if (mHorizontallyScrolling != whether) {
2757            mHorizontallyScrolling = whether;
2758
2759            if (mLayout != null) {
2760                nullLayouts();
2761                requestLayout();
2762                invalidate();
2763            }
2764        }
2765    }
2766
2767    /**
2768     * Returns whether the text is allowed to be wider than the View is.
2769     * If false, the text will be wrapped to the width of the View.
2770     *
2771     * @attr ref android.R.styleable#TextView_scrollHorizontally
2772     * @hide
2773     */
2774    public boolean getHorizontallyScrolling() {
2775        return mHorizontallyScrolling;
2776    }
2777
2778    /**
2779     * Makes the TextView at least this many lines tall.
2780     *
2781     * Setting this value overrides any other (minimum) height setting. A single line TextView will
2782     * set this value to 1.
2783     *
2784     * @see #getMinLines()
2785     *
2786     * @attr ref android.R.styleable#TextView_minLines
2787     */
2788    @android.view.RemotableViewMethod
2789    public void setMinLines(int minlines) {
2790        mMinimum = minlines;
2791        mMinMode = LINES;
2792
2793        requestLayout();
2794        invalidate();
2795    }
2796
2797    /**
2798     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
2799     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
2800     *
2801     * @see #setMinLines(int)
2802     *
2803     * @attr ref android.R.styleable#TextView_minLines
2804     */
2805    public int getMinLines() {
2806        return mMinMode == LINES ? mMinimum : -1;
2807    }
2808
2809    /**
2810     * Makes the TextView at least this many pixels tall.
2811     *
2812     * Setting this value overrides any other (minimum) number of lines setting.
2813     *
2814     * @attr ref android.R.styleable#TextView_minHeight
2815     */
2816    @android.view.RemotableViewMethod
2817    public void setMinHeight(int minHeight) {
2818        mMinimum = minHeight;
2819        mMinMode = PIXELS;
2820
2821        requestLayout();
2822        invalidate();
2823    }
2824
2825    /**
2826     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
2827     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
2828     *
2829     * @see #setMinHeight(int)
2830     *
2831     * @attr ref android.R.styleable#TextView_minHeight
2832     */
2833    public int getMinHeight() {
2834        return mMinMode == PIXELS ? mMinimum : -1;
2835    }
2836
2837    /**
2838     * Makes the TextView at most this many lines tall.
2839     *
2840     * Setting this value overrides any other (maximum) height setting.
2841     *
2842     * @attr ref android.R.styleable#TextView_maxLines
2843     */
2844    @android.view.RemotableViewMethod
2845    public void setMaxLines(int maxlines) {
2846        mMaximum = maxlines;
2847        mMaxMode = LINES;
2848
2849        requestLayout();
2850        invalidate();
2851    }
2852
2853    /**
2854     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
2855     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
2856     *
2857     * @see #setMaxLines(int)
2858     *
2859     * @attr ref android.R.styleable#TextView_maxLines
2860     */
2861    public int getMaxLines() {
2862        return mMaxMode == LINES ? mMaximum : -1;
2863    }
2864
2865    /**
2866     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
2867     * {@link #setMaxLines(int)} method.
2868     *
2869     * Setting this value overrides any other (maximum) number of lines setting.
2870     *
2871     * @attr ref android.R.styleable#TextView_maxHeight
2872     */
2873    @android.view.RemotableViewMethod
2874    public void setMaxHeight(int maxHeight) {
2875        mMaximum = maxHeight;
2876        mMaxMode = PIXELS;
2877
2878        requestLayout();
2879        invalidate();
2880    }
2881
2882    /**
2883     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
2884     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
2885     *
2886     * @see #setMaxHeight(int)
2887     *
2888     * @attr ref android.R.styleable#TextView_maxHeight
2889     */
2890    public int getMaxHeight() {
2891        return mMaxMode == PIXELS ? mMaximum : -1;
2892    }
2893
2894    /**
2895     * Makes the TextView exactly this many lines tall.
2896     *
2897     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2898     * height setting. A single line TextView will set this value to 1.
2899     *
2900     * @attr ref android.R.styleable#TextView_lines
2901     */
2902    @android.view.RemotableViewMethod
2903    public void setLines(int lines) {
2904        mMaximum = mMinimum = lines;
2905        mMaxMode = mMinMode = LINES;
2906
2907        requestLayout();
2908        invalidate();
2909    }
2910
2911    /**
2912     * Makes the TextView exactly this many pixels tall.
2913     * You could do the same thing by specifying this number in the
2914     * LayoutParams.
2915     *
2916     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2917     * height setting.
2918     *
2919     * @attr ref android.R.styleable#TextView_height
2920     */
2921    @android.view.RemotableViewMethod
2922    public void setHeight(int pixels) {
2923        mMaximum = mMinimum = pixels;
2924        mMaxMode = mMinMode = PIXELS;
2925
2926        requestLayout();
2927        invalidate();
2928    }
2929
2930    /**
2931     * Makes the TextView at least this many ems wide
2932     *
2933     * @attr ref android.R.styleable#TextView_minEms
2934     */
2935    @android.view.RemotableViewMethod
2936    public void setMinEms(int minems) {
2937        mMinWidth = minems;
2938        mMinWidthMode = EMS;
2939
2940        requestLayout();
2941        invalidate();
2942    }
2943
2944    /**
2945     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
2946     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
2947     *
2948     * @see #setMinEms(int)
2949     * @see #setEms(int)
2950     *
2951     * @attr ref android.R.styleable#TextView_minEms
2952     */
2953    public int getMinEms() {
2954        return mMinWidthMode == EMS ? mMinWidth : -1;
2955    }
2956
2957    /**
2958     * Makes the TextView at least this many pixels wide
2959     *
2960     * @attr ref android.R.styleable#TextView_minWidth
2961     */
2962    @android.view.RemotableViewMethod
2963    public void setMinWidth(int minpixels) {
2964        mMinWidth = minpixels;
2965        mMinWidthMode = PIXELS;
2966
2967        requestLayout();
2968        invalidate();
2969    }
2970
2971    /**
2972     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
2973     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
2974     *
2975     * @see #setMinWidth(int)
2976     * @see #setWidth(int)
2977     *
2978     * @attr ref android.R.styleable#TextView_minWidth
2979     */
2980    public int getMinWidth() {
2981        return mMinWidthMode == PIXELS ? mMinWidth : -1;
2982    }
2983
2984    /**
2985     * Makes the TextView at most this many ems wide
2986     *
2987     * @attr ref android.R.styleable#TextView_maxEms
2988     */
2989    @android.view.RemotableViewMethod
2990    public void setMaxEms(int maxems) {
2991        mMaxWidth = maxems;
2992        mMaxWidthMode = EMS;
2993
2994        requestLayout();
2995        invalidate();
2996    }
2997
2998    /**
2999     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3000     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3001     *
3002     * @see #setMaxEms(int)
3003     * @see #setEms(int)
3004     *
3005     * @attr ref android.R.styleable#TextView_maxEms
3006     */
3007    public int getMaxEms() {
3008        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3009    }
3010
3011    /**
3012     * Makes the TextView at most this many pixels wide
3013     *
3014     * @attr ref android.R.styleable#TextView_maxWidth
3015     */
3016    @android.view.RemotableViewMethod
3017    public void setMaxWidth(int maxpixels) {
3018        mMaxWidth = maxpixels;
3019        mMaxWidthMode = PIXELS;
3020
3021        requestLayout();
3022        invalidate();
3023    }
3024
3025    /**
3026     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3027     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3028     *
3029     * @see #setMaxWidth(int)
3030     * @see #setWidth(int)
3031     *
3032     * @attr ref android.R.styleable#TextView_maxWidth
3033     */
3034    public int getMaxWidth() {
3035        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3036    }
3037
3038    /**
3039     * Makes the TextView exactly this many ems wide
3040     *
3041     * @see #setMaxEms(int)
3042     * @see #setMinEms(int)
3043     * @see #getMinEms()
3044     * @see #getMaxEms()
3045     *
3046     * @attr ref android.R.styleable#TextView_ems
3047     */
3048    @android.view.RemotableViewMethod
3049    public void setEms(int ems) {
3050        mMaxWidth = mMinWidth = ems;
3051        mMaxWidthMode = mMinWidthMode = EMS;
3052
3053        requestLayout();
3054        invalidate();
3055    }
3056
3057    /**
3058     * Makes the TextView exactly this many pixels wide.
3059     * You could do the same thing by specifying this number in the
3060     * LayoutParams.
3061     *
3062     * @see #setMaxWidth(int)
3063     * @see #setMinWidth(int)
3064     * @see #getMinWidth()
3065     * @see #getMaxWidth()
3066     *
3067     * @attr ref android.R.styleable#TextView_width
3068     */
3069    @android.view.RemotableViewMethod
3070    public void setWidth(int pixels) {
3071        mMaxWidth = mMinWidth = pixels;
3072        mMaxWidthMode = mMinWidthMode = PIXELS;
3073
3074        requestLayout();
3075        invalidate();
3076    }
3077
3078    /**
3079     * Sets line spacing for this TextView.  Each line will have its height
3080     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3081     *
3082     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3083     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3084     */
3085    public void setLineSpacing(float add, float mult) {
3086        if (mSpacingAdd != add || mSpacingMult != mult) {
3087            mSpacingAdd = add;
3088            mSpacingMult = mult;
3089
3090            if (mLayout != null) {
3091                nullLayouts();
3092                requestLayout();
3093                invalidate();
3094            }
3095        }
3096    }
3097
3098    /**
3099     * Gets the line spacing multiplier
3100     *
3101     * @return the value by which each line's height is multiplied to get its actual height.
3102     *
3103     * @see #setLineSpacing(float, float)
3104     * @see #getLineSpacingExtra()
3105     *
3106     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3107     */
3108    public float getLineSpacingMultiplier() {
3109        return mSpacingMult;
3110    }
3111
3112    /**
3113     * Gets the line spacing extra space
3114     *
3115     * @return the extra space that is added to the height of each lines of this TextView.
3116     *
3117     * @see #setLineSpacing(float, float)
3118     * @see #getLineSpacingMultiplier()
3119     *
3120     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3121     */
3122    public float getLineSpacingExtra() {
3123        return mSpacingAdd;
3124    }
3125
3126    /**
3127     * Convenience method: Append the specified text to the TextView's
3128     * display buffer, upgrading it to BufferType.EDITABLE if it was
3129     * not already editable.
3130     */
3131    public final void append(CharSequence text) {
3132        append(text, 0, text.length());
3133    }
3134
3135    /**
3136     * Convenience method: Append the specified text slice to the TextView's
3137     * display buffer, upgrading it to BufferType.EDITABLE if it was
3138     * not already editable.
3139     */
3140    public void append(CharSequence text, int start, int end) {
3141        if (!(mText instanceof Editable)) {
3142            setText(mText, BufferType.EDITABLE);
3143        }
3144
3145        ((Editable) mText).append(text, start, end);
3146    }
3147
3148    private void updateTextColors() {
3149        boolean inval = false;
3150        int color = mTextColor.getColorForState(getDrawableState(), 0);
3151        if (color != mCurTextColor) {
3152            mCurTextColor = color;
3153            inval = true;
3154        }
3155        if (mLinkTextColor != null) {
3156            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
3157            if (color != mTextPaint.linkColor) {
3158                mTextPaint.linkColor = color;
3159                inval = true;
3160            }
3161        }
3162        if (mHintTextColor != null) {
3163            color = mHintTextColor.getColorForState(getDrawableState(), 0);
3164            if (color != mCurHintTextColor && mText.length() == 0) {
3165                mCurHintTextColor = color;
3166                inval = true;
3167            }
3168        }
3169        if (inval) {
3170            // Text needs to be redrawn with the new color
3171            if (mEditor != null) mEditor.invalidateTextDisplayList();
3172            invalidate();
3173        }
3174    }
3175
3176    @Override
3177    protected void drawableStateChanged() {
3178        super.drawableStateChanged();
3179        if (mTextColor != null && mTextColor.isStateful()
3180                || (mHintTextColor != null && mHintTextColor.isStateful())
3181                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
3182            updateTextColors();
3183        }
3184
3185        final Drawables dr = mDrawables;
3186        if (dr != null) {
3187            int[] state = getDrawableState();
3188            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
3189                dr.mDrawableTop.setState(state);
3190            }
3191            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
3192                dr.mDrawableBottom.setState(state);
3193            }
3194            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
3195                dr.mDrawableLeft.setState(state);
3196            }
3197            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
3198                dr.mDrawableRight.setState(state);
3199            }
3200            if (dr.mDrawableStart != null && dr.mDrawableStart.isStateful()) {
3201                dr.mDrawableStart.setState(state);
3202            }
3203            if (dr.mDrawableEnd != null && dr.mDrawableEnd.isStateful()) {
3204                dr.mDrawableEnd.setState(state);
3205            }
3206        }
3207    }
3208
3209    @Override
3210    public Parcelable onSaveInstanceState() {
3211        Parcelable superState = super.onSaveInstanceState();
3212
3213        // Save state if we are forced to
3214        boolean save = mFreezesText;
3215        int start = 0;
3216        int end = 0;
3217
3218        if (mText != null) {
3219            start = getSelectionStart();
3220            end = getSelectionEnd();
3221            if (start >= 0 || end >= 0) {
3222                // Or save state if there is a selection
3223                save = true;
3224            }
3225        }
3226
3227        if (save) {
3228            SavedState ss = new SavedState(superState);
3229            // XXX Should also save the current scroll position!
3230            ss.selStart = start;
3231            ss.selEnd = end;
3232
3233            if (mText instanceof Spanned) {
3234                /*
3235                 * Calling setText() strips off any ChangeWatchers;
3236                 * strip them now to avoid leaking references.
3237                 * But do it to a copy so that if there are any
3238                 * further changes to the text of this view, it
3239                 * won't get into an inconsistent state.
3240                 */
3241
3242                Spannable sp = new SpannableString(mText);
3243
3244                for (ChangeWatcher cw : sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
3245                    sp.removeSpan(cw);
3246                }
3247
3248                if (mEditor != null) {
3249                    removeMisspelledSpans(sp);
3250                    sp.removeSpan(mEditor.mSuggestionRangeSpan);
3251                }
3252
3253                ss.text = sp;
3254            } else {
3255                ss.text = mText.toString();
3256            }
3257
3258            if (isFocused() && start >= 0 && end >= 0) {
3259                ss.frozenWithFocus = true;
3260            }
3261
3262            ss.error = getError();
3263
3264            return ss;
3265        }
3266
3267        return superState;
3268    }
3269
3270    void removeMisspelledSpans(Spannable spannable) {
3271        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
3272                SuggestionSpan.class);
3273        for (int i = 0; i < suggestionSpans.length; i++) {
3274            int flags = suggestionSpans[i].getFlags();
3275            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
3276                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
3277                spannable.removeSpan(suggestionSpans[i]);
3278            }
3279        }
3280    }
3281
3282    @Override
3283    public void onRestoreInstanceState(Parcelable state) {
3284        if (!(state instanceof SavedState)) {
3285            super.onRestoreInstanceState(state);
3286            return;
3287        }
3288
3289        SavedState ss = (SavedState)state;
3290        super.onRestoreInstanceState(ss.getSuperState());
3291
3292        // XXX restore buffer type too, as well as lots of other stuff
3293        if (ss.text != null) {
3294            setText(ss.text);
3295        }
3296
3297        if (ss.selStart >= 0 && ss.selEnd >= 0) {
3298            if (mText instanceof Spannable) {
3299                int len = mText.length();
3300
3301                if (ss.selStart > len || ss.selEnd > len) {
3302                    String restored = "";
3303
3304                    if (ss.text != null) {
3305                        restored = "(restored) ";
3306                    }
3307
3308                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
3309                          "/" + ss.selEnd + " out of range for " + restored +
3310                          "text " + mText);
3311                } else {
3312                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
3313
3314                    if (ss.frozenWithFocus) {
3315                        createEditorIfNeeded();
3316                        mEditor.mFrozenWithFocus = true;
3317                    }
3318                }
3319            }
3320        }
3321
3322        if (ss.error != null) {
3323            final CharSequence error = ss.error;
3324            // Display the error later, after the first layout pass
3325            post(new Runnable() {
3326                public void run() {
3327                    setError(error);
3328                }
3329            });
3330        }
3331    }
3332
3333    /**
3334     * Control whether this text view saves its entire text contents when
3335     * freezing to an icicle, in addition to dynamic state such as cursor
3336     * position.  By default this is false, not saving the text.  Set to true
3337     * if the text in the text view is not being saved somewhere else in
3338     * persistent storage (such as in a content provider) so that if the
3339     * view is later thawed the user will not lose their data.
3340     *
3341     * @param freezesText Controls whether a frozen icicle should include the
3342     * entire text data: true to include it, false to not.
3343     *
3344     * @attr ref android.R.styleable#TextView_freezesText
3345     */
3346    @android.view.RemotableViewMethod
3347    public void setFreezesText(boolean freezesText) {
3348        mFreezesText = freezesText;
3349    }
3350
3351    /**
3352     * Return whether this text view is including its entire text contents
3353     * in frozen icicles.
3354     *
3355     * @return Returns true if text is included, false if it isn't.
3356     *
3357     * @see #setFreezesText
3358     */
3359    public boolean getFreezesText() {
3360        return mFreezesText;
3361    }
3362
3363    ///////////////////////////////////////////////////////////////////////////
3364
3365    /**
3366     * Sets the Factory used to create new Editables.
3367     */
3368    public final void setEditableFactory(Editable.Factory factory) {
3369        mEditableFactory = factory;
3370        setText(mText);
3371    }
3372
3373    /**
3374     * Sets the Factory used to create new Spannables.
3375     */
3376    public final void setSpannableFactory(Spannable.Factory factory) {
3377        mSpannableFactory = factory;
3378        setText(mText);
3379    }
3380
3381    /**
3382     * Sets the string value of the TextView. TextView <em>does not</em> accept
3383     * HTML-like formatting, which you can do with text strings in XML resource files.
3384     * To style your strings, attach android.text.style.* objects to a
3385     * {@link android.text.SpannableString SpannableString}, or see the
3386     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
3387     * Available Resource Types</a> documentation for an example of setting
3388     * formatted text in the XML resource file.
3389     *
3390     * @attr ref android.R.styleable#TextView_text
3391     */
3392    @android.view.RemotableViewMethod
3393    public final void setText(CharSequence text) {
3394        setText(text, mBufferType);
3395    }
3396
3397    /**
3398     * Like {@link #setText(CharSequence)},
3399     * except that the cursor position (if any) is retained in the new text.
3400     *
3401     * @param text The new text to place in the text view.
3402     *
3403     * @see #setText(CharSequence)
3404     */
3405    @android.view.RemotableViewMethod
3406    public final void setTextKeepState(CharSequence text) {
3407        setTextKeepState(text, mBufferType);
3408    }
3409
3410    /**
3411     * Sets the text that this TextView is to display (see
3412     * {@link #setText(CharSequence)}) and also sets whether it is stored
3413     * in a styleable/spannable buffer and whether it is editable.
3414     *
3415     * @attr ref android.R.styleable#TextView_text
3416     * @attr ref android.R.styleable#TextView_bufferType
3417     */
3418    public void setText(CharSequence text, BufferType type) {
3419        setText(text, type, true, 0);
3420
3421        if (mCharWrapper != null) {
3422            mCharWrapper.mChars = null;
3423        }
3424    }
3425
3426    private void setText(CharSequence text, BufferType type,
3427                         boolean notifyBefore, int oldlen) {
3428        if (text == null) {
3429            text = "";
3430        }
3431
3432        // If suggestions are not enabled, remove the suggestion spans from the text
3433        if (!isSuggestionsEnabled()) {
3434            text = removeSuggestionSpans(text);
3435        }
3436
3437        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
3438
3439        if (text instanceof Spanned &&
3440            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
3441            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
3442                setHorizontalFadingEdgeEnabled(true);
3443                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
3444            } else {
3445                setHorizontalFadingEdgeEnabled(false);
3446                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
3447            }
3448            setEllipsize(TextUtils.TruncateAt.MARQUEE);
3449        }
3450
3451        int n = mFilters.length;
3452        for (int i = 0; i < n; i++) {
3453            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
3454            if (out != null) {
3455                text = out;
3456            }
3457        }
3458
3459        if (notifyBefore) {
3460            if (mText != null) {
3461                oldlen = mText.length();
3462                sendBeforeTextChanged(mText, 0, oldlen, text.length());
3463            } else {
3464                sendBeforeTextChanged("", 0, 0, text.length());
3465            }
3466        }
3467
3468        boolean needEditableForNotification = false;
3469
3470        if (mListeners != null && mListeners.size() != 0) {
3471            needEditableForNotification = true;
3472        }
3473
3474        if (type == BufferType.EDITABLE || getKeyListener() != null ||
3475                needEditableForNotification) {
3476            createEditorIfNeeded();
3477            Editable t = mEditableFactory.newEditable(text);
3478            text = t;
3479            setFilters(t, mFilters);
3480            InputMethodManager imm = InputMethodManager.peekInstance();
3481            if (imm != null) imm.restartInput(this);
3482        } else if (type == BufferType.SPANNABLE || mMovement != null) {
3483            text = mSpannableFactory.newSpannable(text);
3484        } else if (!(text instanceof CharWrapper)) {
3485            text = TextUtils.stringOrSpannedString(text);
3486        }
3487
3488        if (mAutoLinkMask != 0) {
3489            Spannable s2;
3490
3491            if (type == BufferType.EDITABLE || text instanceof Spannable) {
3492                s2 = (Spannable) text;
3493            } else {
3494                s2 = mSpannableFactory.newSpannable(text);
3495            }
3496
3497            if (Linkify.addLinks(s2, mAutoLinkMask)) {
3498                text = s2;
3499                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
3500
3501                /*
3502                 * We must go ahead and set the text before changing the
3503                 * movement method, because setMovementMethod() may call
3504                 * setText() again to try to upgrade the buffer type.
3505                 */
3506                mText = text;
3507
3508                // Do not change the movement method for text that support text selection as it
3509                // would prevent an arbitrary cursor displacement.
3510                if (mLinksClickable && !textCanBeSelected()) {
3511                    setMovementMethod(LinkMovementMethod.getInstance());
3512                }
3513            }
3514        }
3515
3516        mBufferType = type;
3517        mText = text;
3518
3519        if (mTransformation == null) {
3520            mTransformed = text;
3521        } else {
3522            mTransformed = mTransformation.getTransformation(text, this);
3523        }
3524
3525        final int textLength = text.length();
3526
3527        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
3528            Spannable sp = (Spannable) text;
3529
3530            // Remove any ChangeWatchers that might have come from other TextViews.
3531            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
3532            final int count = watchers.length;
3533            for (int i = 0; i < count; i++) {
3534                sp.removeSpan(watchers[i]);
3535            }
3536
3537            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
3538
3539            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
3540                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
3541
3542            if (mEditor != null) mEditor.addSpanWatchers(sp);
3543
3544            if (mTransformation != null) {
3545                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
3546            }
3547
3548            if (mMovement != null) {
3549                mMovement.initialize(this, (Spannable) text);
3550
3551                /*
3552                 * Initializing the movement method will have set the
3553                 * selection, so reset mSelectionMoved to keep that from
3554                 * interfering with the normal on-focus selection-setting.
3555                 */
3556                if (mEditor != null) mEditor.mSelectionMoved = false;
3557            }
3558        }
3559
3560        if (mLayout != null) {
3561            checkForRelayout();
3562        }
3563
3564        sendOnTextChanged(text, 0, oldlen, textLength);
3565        onTextChanged(text, 0, oldlen, textLength);
3566
3567        if (needEditableForNotification) {
3568            sendAfterTextChanged((Editable) text);
3569        }
3570
3571        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
3572        if (mEditor != null) mEditor.prepareCursorControllers();
3573    }
3574
3575    /**
3576     * Sets the TextView to display the specified slice of the specified
3577     * char array.  You must promise that you will not change the contents
3578     * of the array except for right before another call to setText(),
3579     * since the TextView has no way to know that the text
3580     * has changed and that it needs to invalidate and re-layout.
3581     */
3582    public final void setText(char[] text, int start, int len) {
3583        int oldlen = 0;
3584
3585        if (start < 0 || len < 0 || start + len > text.length) {
3586            throw new IndexOutOfBoundsException(start + ", " + len);
3587        }
3588
3589        /*
3590         * We must do the before-notification here ourselves because if
3591         * the old text is a CharWrapper we destroy it before calling
3592         * into the normal path.
3593         */
3594        if (mText != null) {
3595            oldlen = mText.length();
3596            sendBeforeTextChanged(mText, 0, oldlen, len);
3597        } else {
3598            sendBeforeTextChanged("", 0, 0, len);
3599        }
3600
3601        if (mCharWrapper == null) {
3602            mCharWrapper = new CharWrapper(text, start, len);
3603        } else {
3604            mCharWrapper.set(text, start, len);
3605        }
3606
3607        setText(mCharWrapper, mBufferType, false, oldlen);
3608    }
3609
3610    /**
3611     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
3612     * except that the cursor position (if any) is retained in the new text.
3613     *
3614     * @see #setText(CharSequence, android.widget.TextView.BufferType)
3615     */
3616    public final void setTextKeepState(CharSequence text, BufferType type) {
3617        int start = getSelectionStart();
3618        int end = getSelectionEnd();
3619        int len = text.length();
3620
3621        setText(text, type);
3622
3623        if (start >= 0 || end >= 0) {
3624            if (mText instanceof Spannable) {
3625                Selection.setSelection((Spannable) mText,
3626                                       Math.max(0, Math.min(start, len)),
3627                                       Math.max(0, Math.min(end, len)));
3628            }
3629        }
3630    }
3631
3632    @android.view.RemotableViewMethod
3633    public final void setText(int resid) {
3634        setText(getContext().getResources().getText(resid));
3635    }
3636
3637    public final void setText(int resid, BufferType type) {
3638        setText(getContext().getResources().getText(resid), type);
3639    }
3640
3641    /**
3642     * Sets the text to be displayed when the text of the TextView is empty.
3643     * Null means to use the normal empty text. The hint does not currently
3644     * participate in determining the size of the view.
3645     *
3646     * @attr ref android.R.styleable#TextView_hint
3647     */
3648    @android.view.RemotableViewMethod
3649    public final void setHint(CharSequence hint) {
3650        mHint = TextUtils.stringOrSpannedString(hint);
3651
3652        if (mLayout != null) {
3653            checkForRelayout();
3654        }
3655
3656        if (mText.length() == 0) {
3657            invalidate();
3658        }
3659
3660        // Invalidate display list if hint is currently used
3661        if (mEditor != null && mText.length() == 0 && mHint != null) {
3662            mEditor.invalidateTextDisplayList();
3663        }
3664    }
3665
3666    /**
3667     * Sets the text to be displayed when the text of the TextView is empty,
3668     * from a resource.
3669     *
3670     * @attr ref android.R.styleable#TextView_hint
3671     */
3672    @android.view.RemotableViewMethod
3673    public final void setHint(int resid) {
3674        setHint(getContext().getResources().getText(resid));
3675    }
3676
3677    /**
3678     * Returns the hint that is displayed when the text of the TextView
3679     * is empty.
3680     *
3681     * @attr ref android.R.styleable#TextView_hint
3682     */
3683    @ViewDebug.CapturedViewProperty
3684    public CharSequence getHint() {
3685        return mHint;
3686    }
3687
3688    boolean isSingleLine() {
3689        return mSingleLine;
3690    }
3691
3692    private static boolean isMultilineInputType(int type) {
3693        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
3694            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
3695    }
3696
3697    /**
3698     * Removes the suggestion spans.
3699     */
3700    CharSequence removeSuggestionSpans(CharSequence text) {
3701       if (text instanceof Spanned) {
3702           Spannable spannable;
3703           if (text instanceof Spannable) {
3704               spannable = (Spannable) text;
3705           } else {
3706               spannable = new SpannableString(text);
3707               text = spannable;
3708           }
3709
3710           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
3711           for (int i = 0; i < spans.length; i++) {
3712               spannable.removeSpan(spans[i]);
3713           }
3714       }
3715       return text;
3716    }
3717
3718    /**
3719     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
3720     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
3721     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
3722     * then a soft keyboard will not be displayed for this text view.
3723     *
3724     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
3725     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
3726     * type.
3727     *
3728     * @see #getInputType()
3729     * @see #setRawInputType(int)
3730     * @see android.text.InputType
3731     * @attr ref android.R.styleable#TextView_inputType
3732     */
3733    public void setInputType(int type) {
3734        final boolean wasPassword = isPasswordInputType(getInputType());
3735        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
3736        setInputType(type, false);
3737        final boolean isPassword = isPasswordInputType(type);
3738        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
3739        boolean forceUpdate = false;
3740        if (isPassword) {
3741            setTransformationMethod(PasswordTransformationMethod.getInstance());
3742            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
3743        } else if (isVisiblePassword) {
3744            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3745                forceUpdate = true;
3746            }
3747            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
3748        } else if (wasPassword || wasVisiblePassword) {
3749            // not in password mode, clean up typeface and transformation
3750            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
3751            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3752                forceUpdate = true;
3753            }
3754        }
3755
3756        boolean singleLine = !isMultilineInputType(type);
3757
3758        // We need to update the single line mode if it has changed or we
3759        // were previously in password mode.
3760        if (mSingleLine != singleLine || forceUpdate) {
3761            // Change single line mode, but only change the transformation if
3762            // we are not in password mode.
3763            applySingleLine(singleLine, !isPassword, true);
3764        }
3765
3766        if (!isSuggestionsEnabled()) {
3767            mText = removeSuggestionSpans(mText);
3768        }
3769
3770        InputMethodManager imm = InputMethodManager.peekInstance();
3771        if (imm != null) imm.restartInput(this);
3772    }
3773
3774    /**
3775     * It would be better to rely on the input type for everything. A password inputType should have
3776     * a password transformation. We should hence use isPasswordInputType instead of this method.
3777     *
3778     * We should:
3779     * - Call setInputType in setKeyListener instead of changing the input type directly (which
3780     * would install the correct transformation).
3781     * - Refuse the installation of a non-password transformation in setTransformation if the input
3782     * type is password.
3783     *
3784     * However, this is like this for legacy reasons and we cannot break existing apps. This method
3785     * is useful since it matches what the user can see (obfuscated text or not).
3786     *
3787     * @return true if the current transformation method is of the password type.
3788     */
3789    private boolean hasPasswordTransformationMethod() {
3790        return mTransformation instanceof PasswordTransformationMethod;
3791    }
3792
3793    private static boolean isPasswordInputType(int inputType) {
3794        final int variation =
3795                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3796        return variation
3797                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
3798                || variation
3799                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
3800                || variation
3801                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
3802    }
3803
3804    private static boolean isVisiblePasswordInputType(int inputType) {
3805        final int variation =
3806                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3807        return variation
3808                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
3809    }
3810
3811    /**
3812     * Directly change the content type integer of the text view, without
3813     * modifying any other state.
3814     * @see #setInputType(int)
3815     * @see android.text.InputType
3816     * @attr ref android.R.styleable#TextView_inputType
3817     */
3818    public void setRawInputType(int type) {
3819        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
3820        createEditorIfNeeded();
3821        mEditor.mInputType = type;
3822    }
3823
3824    private void setInputType(int type, boolean direct) {
3825        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
3826        KeyListener input;
3827        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
3828            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
3829            TextKeyListener.Capitalize cap;
3830            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
3831                cap = TextKeyListener.Capitalize.CHARACTERS;
3832            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
3833                cap = TextKeyListener.Capitalize.WORDS;
3834            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
3835                cap = TextKeyListener.Capitalize.SENTENCES;
3836            } else {
3837                cap = TextKeyListener.Capitalize.NONE;
3838            }
3839            input = TextKeyListener.getInstance(autotext, cap);
3840        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
3841            input = DigitsKeyListener.getInstance(
3842                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
3843                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
3844        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
3845            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
3846                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
3847                    input = DateKeyListener.getInstance();
3848                    break;
3849                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
3850                    input = TimeKeyListener.getInstance();
3851                    break;
3852                default:
3853                    input = DateTimeKeyListener.getInstance();
3854                    break;
3855            }
3856        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
3857            input = DialerKeyListener.getInstance();
3858        } else {
3859            input = TextKeyListener.getInstance();
3860        }
3861        setRawInputType(type);
3862        if (direct) {
3863            createEditorIfNeeded();
3864            mEditor.mKeyListener = input;
3865        } else {
3866            setKeyListenerOnly(input);
3867        }
3868    }
3869
3870    /**
3871     * Get the type of the editable content.
3872     *
3873     * @see #setInputType(int)
3874     * @see android.text.InputType
3875     */
3876    public int getInputType() {
3877        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
3878    }
3879
3880    /**
3881     * Change the editor type integer associated with the text view, which
3882     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
3883     * has focus.
3884     * @see #getImeOptions
3885     * @see android.view.inputmethod.EditorInfo
3886     * @attr ref android.R.styleable#TextView_imeOptions
3887     */
3888    public void setImeOptions(int imeOptions) {
3889        createEditorIfNeeded();
3890        mEditor.createInputContentTypeIfNeeded();
3891        mEditor.mInputContentType.imeOptions = imeOptions;
3892    }
3893
3894    /**
3895     * Get the type of the IME editor.
3896     *
3897     * @see #setImeOptions(int)
3898     * @see android.view.inputmethod.EditorInfo
3899     */
3900    public int getImeOptions() {
3901        return mEditor != null && mEditor.mInputContentType != null
3902                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
3903    }
3904
3905    /**
3906     * Change the custom IME action associated with the text view, which
3907     * will be reported to an IME with {@link EditorInfo#actionLabel}
3908     * and {@link EditorInfo#actionId} when it has focus.
3909     * @see #getImeActionLabel
3910     * @see #getImeActionId
3911     * @see android.view.inputmethod.EditorInfo
3912     * @attr ref android.R.styleable#TextView_imeActionLabel
3913     * @attr ref android.R.styleable#TextView_imeActionId
3914     */
3915    public void setImeActionLabel(CharSequence label, int actionId) {
3916        createEditorIfNeeded();
3917        mEditor.createInputContentTypeIfNeeded();
3918        mEditor.mInputContentType.imeActionLabel = label;
3919        mEditor.mInputContentType.imeActionId = actionId;
3920    }
3921
3922    /**
3923     * Get the IME action label previous set with {@link #setImeActionLabel}.
3924     *
3925     * @see #setImeActionLabel
3926     * @see android.view.inputmethod.EditorInfo
3927     */
3928    public CharSequence getImeActionLabel() {
3929        return mEditor != null && mEditor.mInputContentType != null
3930                ? mEditor.mInputContentType.imeActionLabel : null;
3931    }
3932
3933    /**
3934     * Get the IME action ID previous set with {@link #setImeActionLabel}.
3935     *
3936     * @see #setImeActionLabel
3937     * @see android.view.inputmethod.EditorInfo
3938     */
3939    public int getImeActionId() {
3940        return mEditor != null && mEditor.mInputContentType != null
3941                ? mEditor.mInputContentType.imeActionId : 0;
3942    }
3943
3944    /**
3945     * Set a special listener to be called when an action is performed
3946     * on the text view.  This will be called when the enter key is pressed,
3947     * or when an action supplied to the IME is selected by the user.  Setting
3948     * this means that the normal hard key event will not insert a newline
3949     * into the text view, even if it is multi-line; holding down the ALT
3950     * modifier will, however, allow the user to insert a newline character.
3951     */
3952    public void setOnEditorActionListener(OnEditorActionListener l) {
3953        createEditorIfNeeded();
3954        mEditor.createInputContentTypeIfNeeded();
3955        mEditor.mInputContentType.onEditorActionListener = l;
3956    }
3957
3958    /**
3959     * Called when an attached input method calls
3960     * {@link InputConnection#performEditorAction(int)
3961     * InputConnection.performEditorAction()}
3962     * for this text view.  The default implementation will call your action
3963     * listener supplied to {@link #setOnEditorActionListener}, or perform
3964     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
3965     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
3966     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
3967     * EditorInfo.IME_ACTION_DONE}.
3968     *
3969     * <p>For backwards compatibility, if no IME options have been set and the
3970     * text view would not normally advance focus on enter, then
3971     * the NEXT and DONE actions received here will be turned into an enter
3972     * key down/up pair to go through the normal key handling.
3973     *
3974     * @param actionCode The code of the action being performed.
3975     *
3976     * @see #setOnEditorActionListener
3977     */
3978    public void onEditorAction(int actionCode) {
3979        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
3980        if (ict != null) {
3981            if (ict.onEditorActionListener != null) {
3982                if (ict.onEditorActionListener.onEditorAction(this,
3983                        actionCode, null)) {
3984                    return;
3985                }
3986            }
3987
3988            // This is the handling for some default action.
3989            // Note that for backwards compatibility we don't do this
3990            // default handling if explicit ime options have not been given,
3991            // instead turning this into the normal enter key codes that an
3992            // app may be expecting.
3993            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
3994                View v = focusSearch(FOCUS_FORWARD);
3995                if (v != null) {
3996                    if (!v.requestFocus(FOCUS_FORWARD)) {
3997                        throw new IllegalStateException("focus search returned a view " +
3998                                "that wasn't able to take focus!");
3999                    }
4000                }
4001                return;
4002
4003            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4004                View v = focusSearch(FOCUS_BACKWARD);
4005                if (v != null) {
4006                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4007                        throw new IllegalStateException("focus search returned a view " +
4008                                "that wasn't able to take focus!");
4009                    }
4010                }
4011                return;
4012
4013            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4014                InputMethodManager imm = InputMethodManager.peekInstance();
4015                if (imm != null && imm.isActive(this)) {
4016                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4017                }
4018                return;
4019            }
4020        }
4021
4022        ViewRootImpl viewRootImpl = getViewRootImpl();
4023        if (viewRootImpl != null) {
4024            long eventTime = SystemClock.uptimeMillis();
4025            viewRootImpl.dispatchKeyFromIme(
4026                    new KeyEvent(eventTime, eventTime,
4027                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4028                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4029                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4030                    | KeyEvent.FLAG_EDITOR_ACTION));
4031            viewRootImpl.dispatchKeyFromIme(
4032                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4033                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4034                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4035                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4036                    | KeyEvent.FLAG_EDITOR_ACTION));
4037        }
4038    }
4039
4040    /**
4041     * Set the private content type of the text, which is the
4042     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4043     * field that will be filled in when creating an input connection.
4044     *
4045     * @see #getPrivateImeOptions()
4046     * @see EditorInfo#privateImeOptions
4047     * @attr ref android.R.styleable#TextView_privateImeOptions
4048     */
4049    public void setPrivateImeOptions(String type) {
4050        createEditorIfNeeded();
4051        mEditor.createInputContentTypeIfNeeded();
4052        mEditor.mInputContentType.privateImeOptions = type;
4053    }
4054
4055    /**
4056     * Get the private type of the content.
4057     *
4058     * @see #setPrivateImeOptions(String)
4059     * @see EditorInfo#privateImeOptions
4060     */
4061    public String getPrivateImeOptions() {
4062        return mEditor != null && mEditor.mInputContentType != null
4063                ? mEditor.mInputContentType.privateImeOptions : null;
4064    }
4065
4066    /**
4067     * Set the extra input data of the text, which is the
4068     * {@link EditorInfo#extras TextBoxAttribute.extras}
4069     * Bundle that will be filled in when creating an input connection.  The
4070     * given integer is the resource ID of an XML resource holding an
4071     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4072     *
4073     * @see #getInputExtras(boolean)
4074     * @see EditorInfo#extras
4075     * @attr ref android.R.styleable#TextView_editorExtras
4076     */
4077    public void setInputExtras(int xmlResId) throws XmlPullParserException, IOException {
4078        createEditorIfNeeded();
4079        XmlResourceParser parser = getResources().getXml(xmlResId);
4080        mEditor.createInputContentTypeIfNeeded();
4081        mEditor.mInputContentType.extras = new Bundle();
4082        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4083    }
4084
4085    /**
4086     * Retrieve the input extras currently associated with the text view, which
4087     * can be viewed as well as modified.
4088     *
4089     * @param create If true, the extras will be created if they don't already
4090     * exist.  Otherwise, null will be returned if none have been created.
4091     * @see #setInputExtras(int)
4092     * @see EditorInfo#extras
4093     * @attr ref android.R.styleable#TextView_editorExtras
4094     */
4095    public Bundle getInputExtras(boolean create) {
4096        if (mEditor == null && !create) return null;
4097        createEditorIfNeeded();
4098        if (mEditor.mInputContentType == null) {
4099            if (!create) return null;
4100            mEditor.createInputContentTypeIfNeeded();
4101        }
4102        if (mEditor.mInputContentType.extras == null) {
4103            if (!create) return null;
4104            mEditor.mInputContentType.extras = new Bundle();
4105        }
4106        return mEditor.mInputContentType.extras;
4107    }
4108
4109    /**
4110     * Returns the error message that was set to be displayed with
4111     * {@link #setError}, or <code>null</code> if no error was set
4112     * or if it the error was cleared by the widget after user input.
4113     */
4114    public CharSequence getError() {
4115        return mEditor == null ? null : mEditor.mError;
4116    }
4117
4118    /**
4119     * Sets the right-hand compound drawable of the TextView to the "error"
4120     * icon and sets an error message that will be displayed in a popup when
4121     * the TextView has focus.  The icon and error message will be reset to
4122     * null when any key events cause changes to the TextView's text.  If the
4123     * <code>error</code> is <code>null</code>, the error message and icon
4124     * will be cleared.
4125     */
4126    @android.view.RemotableViewMethod
4127    public void setError(CharSequence error) {
4128        if (error == null) {
4129            setError(null, null);
4130        } else {
4131            Drawable dr = getContext().getResources().
4132                getDrawable(com.android.internal.R.drawable.indicator_input_error);
4133
4134            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
4135            setError(error, dr);
4136        }
4137    }
4138
4139    /**
4140     * Sets the right-hand compound drawable of the TextView to the specified
4141     * icon and sets an error message that will be displayed in a popup when
4142     * the TextView has focus.  The icon and error message will be reset to
4143     * null when any key events cause changes to the TextView's text.  The
4144     * drawable must already have had {@link Drawable#setBounds} set on it.
4145     * If the <code>error</code> is <code>null</code>, the error message will
4146     * be cleared (and you should provide a <code>null</code> icon as well).
4147     */
4148    public void setError(CharSequence error, Drawable icon) {
4149        createEditorIfNeeded();
4150        mEditor.setError(error, icon);
4151    }
4152
4153    @Override
4154    protected boolean setFrame(int l, int t, int r, int b) {
4155        boolean result = super.setFrame(l, t, r, b);
4156
4157        if (mEditor != null) mEditor.setFrame();
4158
4159        restartMarqueeIfNeeded();
4160
4161        return result;
4162    }
4163
4164    private void restartMarqueeIfNeeded() {
4165        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4166            mRestartMarquee = false;
4167            startMarquee();
4168        }
4169    }
4170
4171    /**
4172     * Sets the list of input filters that will be used if the buffer is
4173     * Editable. Has no effect otherwise.
4174     *
4175     * @attr ref android.R.styleable#TextView_maxLength
4176     */
4177    public void setFilters(InputFilter[] filters) {
4178        if (filters == null) {
4179            throw new IllegalArgumentException();
4180        }
4181
4182        mFilters = filters;
4183
4184        if (mText instanceof Editable) {
4185            setFilters((Editable) mText, filters);
4186        }
4187    }
4188
4189    /**
4190     * Sets the list of input filters on the specified Editable,
4191     * and includes mInput in the list if it is an InputFilter.
4192     */
4193    private void setFilters(Editable e, InputFilter[] filters) {
4194        if (mEditor != null && mEditor.mKeyListener instanceof InputFilter) {
4195            InputFilter[] nf = new InputFilter[filters.length + 1];
4196
4197            System.arraycopy(filters, 0, nf, 0, filters.length);
4198            nf[filters.length] = (InputFilter) mEditor.mKeyListener;
4199
4200            e.setFilters(nf);
4201        } else {
4202            e.setFilters(filters);
4203        }
4204    }
4205
4206    /**
4207     * Returns the current list of input filters.
4208     *
4209     * @attr ref android.R.styleable#TextView_maxLength
4210     */
4211    public InputFilter[] getFilters() {
4212        return mFilters;
4213    }
4214
4215    /////////////////////////////////////////////////////////////////////////
4216
4217    int getVerticalOffset(boolean forceNormal) {
4218        int voffset = 0;
4219        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4220
4221        Layout l = mLayout;
4222        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4223            l = mHintLayout;
4224        }
4225
4226        if (gravity != Gravity.TOP) {
4227            int boxht;
4228
4229            if (l == mHintLayout) {
4230                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
4231                        getCompoundPaddingBottom();
4232            } else {
4233                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
4234                        getExtendedPaddingBottom();
4235            }
4236            int textht = l.getHeight();
4237
4238            if (textht < boxht) {
4239                if (gravity == Gravity.BOTTOM)
4240                    voffset = boxht - textht;
4241                else // (gravity == Gravity.CENTER_VERTICAL)
4242                    voffset = (boxht - textht) >> 1;
4243            }
4244        }
4245        return voffset;
4246    }
4247
4248    private int getBottomVerticalOffset(boolean forceNormal) {
4249        int voffset = 0;
4250        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4251
4252        Layout l = mLayout;
4253        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4254            l = mHintLayout;
4255        }
4256
4257        if (gravity != Gravity.BOTTOM) {
4258            int boxht;
4259
4260            if (l == mHintLayout) {
4261                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
4262                        getCompoundPaddingBottom();
4263            } else {
4264                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
4265                        getExtendedPaddingBottom();
4266            }
4267            int textht = l.getHeight();
4268
4269            if (textht < boxht) {
4270                if (gravity == Gravity.TOP)
4271                    voffset = boxht - textht;
4272                else // (gravity == Gravity.CENTER_VERTICAL)
4273                    voffset = (boxht - textht) >> 1;
4274            }
4275        }
4276        return voffset;
4277    }
4278
4279    void invalidateCursorPath() {
4280        if (mHighlightPathBogus) {
4281            invalidateCursor();
4282        } else {
4283            final int horizontalPadding = getCompoundPaddingLeft();
4284            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4285
4286            if (mEditor.mCursorCount == 0) {
4287                synchronized (TEMP_RECTF) {
4288                    /*
4289                     * The reason for this concern about the thickness of the
4290                     * cursor and doing the floor/ceil on the coordinates is that
4291                     * some EditTexts (notably textfields in the Browser) have
4292                     * anti-aliased text where not all the characters are
4293                     * necessarily at integer-multiple locations.  This should
4294                     * make sure the entire cursor gets invalidated instead of
4295                     * sometimes missing half a pixel.
4296                     */
4297                    float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
4298                    if (thick < 1.0f) {
4299                        thick = 1.0f;
4300                    }
4301
4302                    thick /= 2.0f;
4303
4304                    // mHighlightPath is guaranteed to be non null at that point.
4305                    mHighlightPath.computeBounds(TEMP_RECTF, false);
4306
4307                    invalidate((int) FloatMath.floor(horizontalPadding + TEMP_RECTF.left - thick),
4308                            (int) FloatMath.floor(verticalPadding + TEMP_RECTF.top - thick),
4309                            (int) FloatMath.ceil(horizontalPadding + TEMP_RECTF.right + thick),
4310                            (int) FloatMath.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
4311                }
4312            } else {
4313                for (int i = 0; i < mEditor.mCursorCount; i++) {
4314                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4315                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
4316                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
4317                }
4318            }
4319        }
4320    }
4321
4322    void invalidateCursor() {
4323        int where = getSelectionEnd();
4324
4325        invalidateCursor(where, where, where);
4326    }
4327
4328    private void invalidateCursor(int a, int b, int c) {
4329        if (a >= 0 || b >= 0 || c >= 0) {
4330            int start = Math.min(Math.min(a, b), c);
4331            int end = Math.max(Math.max(a, b), c);
4332            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
4333        }
4334    }
4335
4336    /**
4337     * Invalidates the region of text enclosed between the start and end text offsets.
4338     */
4339    void invalidateRegion(int start, int end, boolean invalidateCursor) {
4340        if (mLayout == null) {
4341            invalidate();
4342        } else {
4343                int lineStart = mLayout.getLineForOffset(start);
4344                int top = mLayout.getLineTop(lineStart);
4345
4346                // This is ridiculous, but the descent from the line above
4347                // can hang down into the line we really want to redraw,
4348                // so we have to invalidate part of the line above to make
4349                // sure everything that needs to be redrawn really is.
4350                // (But not the whole line above, because that would cause
4351                // the same problem with the descenders on the line above it!)
4352                if (lineStart > 0) {
4353                    top -= mLayout.getLineDescent(lineStart - 1);
4354                }
4355
4356                int lineEnd;
4357
4358                if (start == end)
4359                    lineEnd = lineStart;
4360                else
4361                    lineEnd = mLayout.getLineForOffset(end);
4362
4363                int bottom = mLayout.getLineBottom(lineEnd);
4364
4365                // mEditor can be null in case selection is set programmatically.
4366                if (invalidateCursor && mEditor != null) {
4367                    for (int i = 0; i < mEditor.mCursorCount; i++) {
4368                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4369                        top = Math.min(top, bounds.top);
4370                        bottom = Math.max(bottom, bounds.bottom);
4371                    }
4372                }
4373
4374                final int compoundPaddingLeft = getCompoundPaddingLeft();
4375                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4376
4377                int left, right;
4378                if (lineStart == lineEnd && !invalidateCursor) {
4379                    left = (int) mLayout.getPrimaryHorizontal(start);
4380                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
4381                    left += compoundPaddingLeft;
4382                    right += compoundPaddingLeft;
4383                } else {
4384                    // Rectangle bounding box when the region spans several lines
4385                    left = compoundPaddingLeft;
4386                    right = getWidth() - getCompoundPaddingRight();
4387                }
4388
4389                invalidate(mScrollX + left, verticalPadding + top,
4390                        mScrollX + right, verticalPadding + bottom);
4391        }
4392    }
4393
4394    private void registerForPreDraw() {
4395        if (!mPreDrawRegistered) {
4396            getViewTreeObserver().addOnPreDrawListener(this);
4397            mPreDrawRegistered = true;
4398        }
4399    }
4400
4401    /**
4402     * {@inheritDoc}
4403     */
4404    public boolean onPreDraw() {
4405        if (mLayout == null) {
4406            assumeLayout();
4407        }
4408
4409        boolean changed = false;
4410
4411        if (mMovement != null) {
4412            /* This code also provides auto-scrolling when a cursor is moved using a
4413             * CursorController (insertion point or selection limits).
4414             * For selection, ensure start or end is visible depending on controller's state.
4415             */
4416            int curs = getSelectionEnd();
4417            // Do not create the controller if it is not already created.
4418            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
4419                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
4420                curs = getSelectionStart();
4421            }
4422
4423            /*
4424             * TODO: This should really only keep the end in view if
4425             * it already was before the text changed.  I'm not sure
4426             * of a good way to tell from here if it was.
4427             */
4428            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
4429                curs = mText.length();
4430            }
4431
4432            if (curs >= 0) {
4433                changed = bringPointIntoView(curs);
4434            }
4435        } else {
4436            changed = bringTextIntoView();
4437        }
4438
4439        // This has to be checked here since:
4440        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
4441        //   a screen rotation) since layout is not yet initialized at that point.
4442        if (mEditor != null && mEditor.mCreatedWithASelection) {
4443            mEditor.startSelectionActionMode();
4444            mEditor.mCreatedWithASelection = false;
4445        }
4446
4447        // Phone specific code (there is no ExtractEditText on tablets).
4448        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
4449        // not be set. Do the test here instead.
4450        if (this instanceof ExtractEditText && hasSelection() && mEditor != null) {
4451            mEditor.startSelectionActionMode();
4452        }
4453
4454        getViewTreeObserver().removeOnPreDrawListener(this);
4455        mPreDrawRegistered = false;
4456
4457        return !changed;
4458    }
4459
4460    @Override
4461    protected void onAttachedToWindow() {
4462        super.onAttachedToWindow();
4463
4464        mTemporaryDetach = false;
4465
4466        // Resolve drawables as the layout direction has been resolved
4467        resolveDrawables();
4468
4469        if (mEditor != null) mEditor.onAttachedToWindow();
4470    }
4471
4472    @Override
4473    protected void onDetachedFromWindow() {
4474        super.onDetachedFromWindow();
4475
4476        if (mPreDrawRegistered) {
4477            getViewTreeObserver().removeOnPreDrawListener(this);
4478            mPreDrawRegistered = false;
4479        }
4480
4481        resetResolvedDrawables();
4482
4483        if (mEditor != null) mEditor.onDetachedFromWindow();
4484    }
4485
4486    @Override
4487    public void onScreenStateChanged(int screenState) {
4488        super.onScreenStateChanged(screenState);
4489        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
4490    }
4491
4492    @Override
4493    protected boolean isPaddingOffsetRequired() {
4494        return mShadowRadius != 0 || mDrawables != null;
4495    }
4496
4497    @Override
4498    protected int getLeftPaddingOffset() {
4499        return getCompoundPaddingLeft() - mPaddingLeft +
4500                (int) Math.min(0, mShadowDx - mShadowRadius);
4501    }
4502
4503    @Override
4504    protected int getTopPaddingOffset() {
4505        return (int) Math.min(0, mShadowDy - mShadowRadius);
4506    }
4507
4508    @Override
4509    protected int getBottomPaddingOffset() {
4510        return (int) Math.max(0, mShadowDy + mShadowRadius);
4511    }
4512
4513    @Override
4514    protected int getRightPaddingOffset() {
4515        return -(getCompoundPaddingRight() - mPaddingRight) +
4516                (int) Math.max(0, mShadowDx + mShadowRadius);
4517    }
4518
4519    @Override
4520    protected boolean verifyDrawable(Drawable who) {
4521        final boolean verified = super.verifyDrawable(who);
4522        if (!verified && mDrawables != null) {
4523            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
4524                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom ||
4525                    who == mDrawables.mDrawableStart || who == mDrawables.mDrawableEnd;
4526        }
4527        return verified;
4528    }
4529
4530    @Override
4531    public void jumpDrawablesToCurrentState() {
4532        super.jumpDrawablesToCurrentState();
4533        if (mDrawables != null) {
4534            if (mDrawables.mDrawableLeft != null) {
4535                mDrawables.mDrawableLeft.jumpToCurrentState();
4536            }
4537            if (mDrawables.mDrawableTop != null) {
4538                mDrawables.mDrawableTop.jumpToCurrentState();
4539            }
4540            if (mDrawables.mDrawableRight != null) {
4541                mDrawables.mDrawableRight.jumpToCurrentState();
4542            }
4543            if (mDrawables.mDrawableBottom != null) {
4544                mDrawables.mDrawableBottom.jumpToCurrentState();
4545            }
4546            if (mDrawables.mDrawableStart != null) {
4547                mDrawables.mDrawableStart.jumpToCurrentState();
4548            }
4549            if (mDrawables.mDrawableEnd != null) {
4550                mDrawables.mDrawableEnd.jumpToCurrentState();
4551            }
4552        }
4553    }
4554
4555    @Override
4556    public void invalidateDrawable(Drawable drawable) {
4557        if (verifyDrawable(drawable)) {
4558            final Rect dirty = drawable.getBounds();
4559            int scrollX = mScrollX;
4560            int scrollY = mScrollY;
4561
4562            // IMPORTANT: The coordinates below are based on the coordinates computed
4563            // for each compound drawable in onDraw(). Make sure to update each section
4564            // accordingly.
4565            final TextView.Drawables drawables = mDrawables;
4566            if (drawables != null) {
4567                if (drawable == drawables.mDrawableLeft) {
4568                    final int compoundPaddingTop = getCompoundPaddingTop();
4569                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4570                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4571
4572                    scrollX += mPaddingLeft;
4573                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
4574                } else if (drawable == drawables.mDrawableRight) {
4575                    final int compoundPaddingTop = getCompoundPaddingTop();
4576                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4577                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4578
4579                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
4580                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
4581                } else if (drawable == drawables.mDrawableTop) {
4582                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4583                    final int compoundPaddingRight = getCompoundPaddingRight();
4584                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4585
4586                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
4587                    scrollY += mPaddingTop;
4588                } else if (drawable == drawables.mDrawableBottom) {
4589                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4590                    final int compoundPaddingRight = getCompoundPaddingRight();
4591                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4592
4593                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
4594                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
4595                }
4596            }
4597
4598            invalidate(dirty.left + scrollX, dirty.top + scrollY,
4599                    dirty.right + scrollX, dirty.bottom + scrollY);
4600        }
4601    }
4602
4603    @Override
4604    public boolean hasOverlappingRendering() {
4605        return (getBackground() != null || mText instanceof Spannable || hasSelection());
4606    }
4607
4608    /**
4609     * When a TextView is used to display a useful piece of information to the user (such as a
4610     * contact's address), it should be made selectable, so that the user can select and copy this
4611     * content.
4612     *
4613     * Use {@link #setTextIsSelectable(boolean)} or the
4614     * {@link android.R.styleable#TextView_textIsSelectable} XML attribute to make this TextView
4615     * selectable (text is not selectable by default).
4616     *
4617     * Note that this method simply returns the state of this flag. Although this flag has to be set
4618     * in order to select text in non-editable TextView, the content of an {@link EditText} can
4619     * always be selected, independently of the value of this flag.
4620     *
4621     * @return True if the text displayed in this TextView can be selected by the user.
4622     *
4623     * @attr ref android.R.styleable#TextView_textIsSelectable
4624     */
4625    public boolean isTextSelectable() {
4626        return mEditor == null ? false : mEditor.mTextIsSelectable;
4627    }
4628
4629    /**
4630     * Sets whether or not (default) the content of this view is selectable by the user.
4631     *
4632     * Note that this methods affect the {@link #setFocusable(boolean)},
4633     * {@link #setFocusableInTouchMode(boolean)} {@link #setClickable(boolean)} and
4634     * {@link #setLongClickable(boolean)} states and you may want to restore these if they were
4635     * customized.
4636     *
4637     * See {@link #isTextSelectable} for details.
4638     *
4639     * @param selectable Whether or not the content of this TextView should be selectable.
4640     */
4641    public void setTextIsSelectable(boolean selectable) {
4642        if (!selectable && mEditor == null) return; // false is default value with no edit data
4643
4644        createEditorIfNeeded();
4645        if (mEditor.mTextIsSelectable == selectable) return;
4646
4647        mEditor.mTextIsSelectable = selectable;
4648        setFocusableInTouchMode(selectable);
4649        setFocusable(selectable);
4650        setClickable(selectable);
4651        setLongClickable(selectable);
4652
4653        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
4654
4655        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
4656        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
4657
4658        // Called by setText above, but safer in case of future code changes
4659        mEditor.prepareCursorControllers();
4660    }
4661
4662    @Override
4663    protected int[] onCreateDrawableState(int extraSpace) {
4664        final int[] drawableState;
4665
4666        if (mSingleLine) {
4667            drawableState = super.onCreateDrawableState(extraSpace);
4668        } else {
4669            drawableState = super.onCreateDrawableState(extraSpace + 1);
4670            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
4671        }
4672
4673        if (isTextSelectable()) {
4674            // Disable pressed state, which was introduced when TextView was made clickable.
4675            // Prevents text color change.
4676            // setClickable(false) would have a similar effect, but it also disables focus changes
4677            // and long press actions, which are both needed by text selection.
4678            final int length = drawableState.length;
4679            for (int i = 0; i < length; i++) {
4680                if (drawableState[i] == R.attr.state_pressed) {
4681                    final int[] nonPressedState = new int[length - 1];
4682                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
4683                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
4684                    return nonPressedState;
4685                }
4686            }
4687        }
4688
4689        return drawableState;
4690    }
4691
4692    private Path getUpdatedHighlightPath() {
4693        Path highlight = null;
4694        Paint highlightPaint = mHighlightPaint;
4695
4696        final int selStart = getSelectionStart();
4697        final int selEnd = getSelectionEnd();
4698        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
4699            if (selStart == selEnd) {
4700                if (mEditor != null && mEditor.isCursorVisible() &&
4701                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
4702                        (2 * Editor.BLINK) < Editor.BLINK) {
4703                    if (mHighlightPathBogus) {
4704                        if (mHighlightPath == null) mHighlightPath = new Path();
4705                        mHighlightPath.reset();
4706                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
4707                        mEditor.updateCursorsPositions();
4708                        mHighlightPathBogus = false;
4709                    }
4710
4711                    // XXX should pass to skin instead of drawing directly
4712                    highlightPaint.setColor(mCurTextColor);
4713                    highlightPaint.setStyle(Paint.Style.STROKE);
4714                    highlight = mHighlightPath;
4715                }
4716            } else {
4717                if (mHighlightPathBogus) {
4718                    if (mHighlightPath == null) mHighlightPath = new Path();
4719                    mHighlightPath.reset();
4720                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4721                    mHighlightPathBogus = false;
4722                }
4723
4724                // XXX should pass to skin instead of drawing directly
4725                highlightPaint.setColor(mHighlightColor);
4726                highlightPaint.setStyle(Paint.Style.FILL);
4727
4728                highlight = mHighlightPath;
4729            }
4730        }
4731        return highlight;
4732    }
4733
4734    @Override
4735    protected void onDraw(Canvas canvas) {
4736        restartMarqueeIfNeeded();
4737
4738        // Draw the background for this view
4739        super.onDraw(canvas);
4740
4741        final int compoundPaddingLeft = getCompoundPaddingLeft();
4742        final int compoundPaddingTop = getCompoundPaddingTop();
4743        final int compoundPaddingRight = getCompoundPaddingRight();
4744        final int compoundPaddingBottom = getCompoundPaddingBottom();
4745        final int scrollX = mScrollX;
4746        final int scrollY = mScrollY;
4747        final int right = mRight;
4748        final int left = mLeft;
4749        final int bottom = mBottom;
4750        final int top = mTop;
4751
4752        final Drawables dr = mDrawables;
4753        if (dr != null) {
4754            /*
4755             * Compound, not extended, because the icon is not clipped
4756             * if the text height is smaller.
4757             */
4758
4759            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
4760            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
4761
4762            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4763            // Make sure to update invalidateDrawable() when changing this code.
4764            if (dr.mDrawableLeft != null) {
4765                canvas.save();
4766                canvas.translate(scrollX + mPaddingLeft,
4767                                 scrollY + compoundPaddingTop +
4768                                 (vspace - dr.mDrawableHeightLeft) / 2);
4769                dr.mDrawableLeft.draw(canvas);
4770                canvas.restore();
4771            }
4772
4773            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4774            // Make sure to update invalidateDrawable() when changing this code.
4775            if (dr.mDrawableRight != null) {
4776                canvas.save();
4777                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
4778                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
4779                dr.mDrawableRight.draw(canvas);
4780                canvas.restore();
4781            }
4782
4783            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4784            // Make sure to update invalidateDrawable() when changing this code.
4785            if (dr.mDrawableTop != null) {
4786                canvas.save();
4787                canvas.translate(scrollX + compoundPaddingLeft +
4788                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
4789                dr.mDrawableTop.draw(canvas);
4790                canvas.restore();
4791            }
4792
4793            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4794            // Make sure to update invalidateDrawable() when changing this code.
4795            if (dr.mDrawableBottom != null) {
4796                canvas.save();
4797                canvas.translate(scrollX + compoundPaddingLeft +
4798                        (hspace - dr.mDrawableWidthBottom) / 2,
4799                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
4800                dr.mDrawableBottom.draw(canvas);
4801                canvas.restore();
4802            }
4803        }
4804
4805        int color = mCurTextColor;
4806
4807        if (mLayout == null) {
4808            assumeLayout();
4809        }
4810
4811        Layout layout = mLayout;
4812
4813        if (mHint != null && mText.length() == 0) {
4814            if (mHintTextColor != null) {
4815                color = mCurHintTextColor;
4816            }
4817
4818            layout = mHintLayout;
4819        }
4820
4821        mTextPaint.setColor(color);
4822        mTextPaint.drawableState = getDrawableState();
4823
4824        canvas.save();
4825        /*  Would be faster if we didn't have to do this. Can we chop the
4826            (displayable) text so that we don't need to do this ever?
4827        */
4828
4829        int extendedPaddingTop = getExtendedPaddingTop();
4830        int extendedPaddingBottom = getExtendedPaddingBottom();
4831
4832        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4833        final int maxScrollY = mLayout.getHeight() - vspace;
4834
4835        float clipLeft = compoundPaddingLeft + scrollX;
4836        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
4837        float clipRight = right - left - compoundPaddingRight + scrollX;
4838        float clipBottom = bottom - top + scrollY -
4839                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
4840
4841        if (mShadowRadius != 0) {
4842            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
4843            clipRight += Math.max(0, mShadowDx + mShadowRadius);
4844
4845            clipTop += Math.min(0, mShadowDy - mShadowRadius);
4846            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
4847        }
4848
4849        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
4850
4851        int voffsetText = 0;
4852        int voffsetCursor = 0;
4853
4854        // translate in by our padding
4855        /* shortcircuit calling getVerticaOffset() */
4856        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4857            voffsetText = getVerticalOffset(false);
4858            voffsetCursor = getVerticalOffset(true);
4859        }
4860        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
4861
4862        final boolean isLayoutRtl = isLayoutRtl();
4863
4864        final int layoutDirection = getResolvedLayoutDirection();
4865        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
4866        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
4867                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
4868            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
4869                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
4870                final int width = mRight - mLeft;
4871                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
4872                final float dx = mLayout.getLineRight(0) - (width - padding);
4873                canvas.translate(isLayoutRtl ? -dx : +dx, 0.0f);
4874            }
4875
4876            if (mMarquee != null && mMarquee.isRunning()) {
4877                final float dx = -mMarquee.getScroll();
4878                canvas.translate(isLayoutRtl ? -dx : +dx, 0.0f);
4879            }
4880        }
4881
4882        final int cursorOffsetVertical = voffsetCursor - voffsetText;
4883
4884        Path highlight = getUpdatedHighlightPath();
4885        if (mEditor != null) {
4886            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
4887        } else {
4888            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4889        }
4890
4891        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
4892            final int dx = (int) mMarquee.getGhostOffset();
4893            canvas.translate(isLayoutRtl ? -dx : dx, 0.0f);
4894            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4895        }
4896
4897        canvas.restore();
4898    }
4899
4900    @Override
4901    public void getFocusedRect(Rect r) {
4902        if (mLayout == null) {
4903            super.getFocusedRect(r);
4904            return;
4905        }
4906
4907        int selEnd = getSelectionEnd();
4908        if (selEnd < 0) {
4909            super.getFocusedRect(r);
4910            return;
4911        }
4912
4913        int selStart = getSelectionStart();
4914        if (selStart < 0 || selStart >= selEnd) {
4915            int line = mLayout.getLineForOffset(selEnd);
4916            r.top = mLayout.getLineTop(line);
4917            r.bottom = mLayout.getLineBottom(line);
4918            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
4919            r.right = r.left + 4;
4920        } else {
4921            int lineStart = mLayout.getLineForOffset(selStart);
4922            int lineEnd = mLayout.getLineForOffset(selEnd);
4923            r.top = mLayout.getLineTop(lineStart);
4924            r.bottom = mLayout.getLineBottom(lineEnd);
4925            if (lineStart == lineEnd) {
4926                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
4927                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
4928            } else {
4929                // Selection extends across multiple lines -- make the focused
4930                // rect cover the entire width.
4931                if (mHighlightPathBogus) {
4932                    if (mHighlightPath == null) mHighlightPath = new Path();
4933                    mHighlightPath.reset();
4934                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4935                    mHighlightPathBogus = false;
4936                }
4937                synchronized (TEMP_RECTF) {
4938                    mHighlightPath.computeBounds(TEMP_RECTF, true);
4939                    r.left = (int)TEMP_RECTF.left-1;
4940                    r.right = (int)TEMP_RECTF.right+1;
4941                }
4942            }
4943        }
4944
4945        // Adjust for padding and gravity.
4946        int paddingLeft = getCompoundPaddingLeft();
4947        int paddingTop = getExtendedPaddingTop();
4948        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4949            paddingTop += getVerticalOffset(false);
4950        }
4951        r.offset(paddingLeft, paddingTop);
4952        int paddingBottom = getExtendedPaddingBottom();
4953        r.bottom += paddingBottom;
4954    }
4955
4956    /**
4957     * Return the number of lines of text, or 0 if the internal Layout has not
4958     * been built.
4959     */
4960    public int getLineCount() {
4961        return mLayout != null ? mLayout.getLineCount() : 0;
4962    }
4963
4964    /**
4965     * Return the baseline for the specified line (0...getLineCount() - 1)
4966     * If bounds is not null, return the top, left, right, bottom extents
4967     * of the specified line in it. If the internal Layout has not been built,
4968     * return 0 and set bounds to (0, 0, 0, 0)
4969     * @param line which line to examine (0..getLineCount() - 1)
4970     * @param bounds Optional. If not null, it returns the extent of the line
4971     * @return the Y-coordinate of the baseline
4972     */
4973    public int getLineBounds(int line, Rect bounds) {
4974        if (mLayout == null) {
4975            if (bounds != null) {
4976                bounds.set(0, 0, 0, 0);
4977            }
4978            return 0;
4979        }
4980        else {
4981            int baseline = mLayout.getLineBounds(line, bounds);
4982
4983            int voffset = getExtendedPaddingTop();
4984            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4985                voffset += getVerticalOffset(true);
4986            }
4987            if (bounds != null) {
4988                bounds.offset(getCompoundPaddingLeft(), voffset);
4989            }
4990            return baseline + voffset;
4991        }
4992    }
4993
4994    @Override
4995    public int getBaseline() {
4996        if (mLayout == null) {
4997            return super.getBaseline();
4998        }
4999
5000        int voffset = 0;
5001        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5002            voffset = getVerticalOffset(true);
5003        }
5004
5005        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
5006    }
5007
5008    /**
5009     * @hide
5010     */
5011    @Override
5012    protected int getFadeTop(boolean offsetRequired) {
5013        if (mLayout == null) return 0;
5014
5015        int voffset = 0;
5016        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5017            voffset = getVerticalOffset(true);
5018        }
5019
5020        if (offsetRequired) voffset += getTopPaddingOffset();
5021
5022        return getExtendedPaddingTop() + voffset;
5023    }
5024
5025    /**
5026     * @hide
5027     */
5028    @Override
5029    protected int getFadeHeight(boolean offsetRequired) {
5030        return mLayout != null ? mLayout.getHeight() : 0;
5031    }
5032
5033    @Override
5034    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
5035        if (keyCode == KeyEvent.KEYCODE_BACK) {
5036            boolean isInSelectionMode = mEditor != null && mEditor.mSelectionActionMode != null;
5037
5038            if (isInSelectionMode) {
5039                if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
5040                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5041                    if (state != null) {
5042                        state.startTracking(event, this);
5043                    }
5044                    return true;
5045                } else if (event.getAction() == KeyEvent.ACTION_UP) {
5046                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5047                    if (state != null) {
5048                        state.handleUpEvent(event);
5049                    }
5050                    if (event.isTracking() && !event.isCanceled()) {
5051                        stopSelectionActionMode();
5052                        return true;
5053                    }
5054                }
5055            }
5056        }
5057        return super.onKeyPreIme(keyCode, event);
5058    }
5059
5060    @Override
5061    public boolean onKeyDown(int keyCode, KeyEvent event) {
5062        int which = doKeyDown(keyCode, event, null);
5063        if (which == 0) {
5064            // Go through default dispatching.
5065            return super.onKeyDown(keyCode, event);
5066        }
5067
5068        return true;
5069    }
5070
5071    @Override
5072    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
5073        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
5074
5075        int which = doKeyDown(keyCode, down, event);
5076        if (which == 0) {
5077            // Go through default dispatching.
5078            return super.onKeyMultiple(keyCode, repeatCount, event);
5079        }
5080        if (which == -1) {
5081            // Consumed the whole thing.
5082            return true;
5083        }
5084
5085        repeatCount--;
5086
5087        // We are going to dispatch the remaining events to either the input
5088        // or movement method.  To do this, we will just send a repeated stream
5089        // of down and up events until we have done the complete repeatCount.
5090        // It would be nice if those interfaces had an onKeyMultiple() method,
5091        // but adding that is a more complicated change.
5092        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
5093        if (which == 1) {
5094            // mEditor and mEditor.mInput are not null from doKeyDown
5095            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5096            while (--repeatCount > 0) {
5097                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
5098                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5099            }
5100            hideErrorIfUnchanged();
5101
5102        } else if (which == 2) {
5103            // mMovement is not null from doKeyDown
5104            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5105            while (--repeatCount > 0) {
5106                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
5107                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5108            }
5109        }
5110
5111        return true;
5112    }
5113
5114    /**
5115     * Returns true if pressing ENTER in this field advances focus instead
5116     * of inserting the character.  This is true mostly in single-line fields,
5117     * but also in mail addresses and subjects which will display on multiple
5118     * lines but where it doesn't make sense to insert newlines.
5119     */
5120    private boolean shouldAdvanceFocusOnEnter() {
5121        if (getKeyListener() == null) {
5122            return false;
5123        }
5124
5125        if (mSingleLine) {
5126            return true;
5127        }
5128
5129        if (mEditor != null &&
5130                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5131            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5132            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
5133                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
5134                return true;
5135            }
5136        }
5137
5138        return false;
5139    }
5140
5141    /**
5142     * Returns true if pressing TAB in this field advances focus instead
5143     * of inserting the character.  Insert tabs only in multi-line editors.
5144     */
5145    private boolean shouldAdvanceFocusOnTab() {
5146        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
5147                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5148            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5149            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
5150                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
5151                return false;
5152            }
5153        }
5154        return true;
5155    }
5156
5157    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
5158        if (!isEnabled()) {
5159            return 0;
5160        }
5161
5162        switch (keyCode) {
5163            case KeyEvent.KEYCODE_ENTER:
5164                if (event.hasNoModifiers()) {
5165                    // When mInputContentType is set, we know that we are
5166                    // running in a "modern" cupcake environment, so don't need
5167                    // to worry about the application trying to capture
5168                    // enter key events.
5169                    if (mEditor != null && mEditor.mInputContentType != null) {
5170                        // If there is an action listener, given them a
5171                        // chance to consume the event.
5172                        if (mEditor.mInputContentType.onEditorActionListener != null &&
5173                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5174                                this, EditorInfo.IME_NULL, event)) {
5175                            mEditor.mInputContentType.enterDown = true;
5176                            // We are consuming the enter key for them.
5177                            return -1;
5178                        }
5179                    }
5180
5181                    // If our editor should move focus when enter is pressed, or
5182                    // this is a generated event from an IME action button, then
5183                    // don't let it be inserted into the text.
5184                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5185                            || shouldAdvanceFocusOnEnter()) {
5186                        if (hasOnClickListeners()) {
5187                            return 0;
5188                        }
5189                        return -1;
5190                    }
5191                }
5192                break;
5193
5194            case KeyEvent.KEYCODE_DPAD_CENTER:
5195                if (event.hasNoModifiers()) {
5196                    if (shouldAdvanceFocusOnEnter()) {
5197                        return 0;
5198                    }
5199                }
5200                break;
5201
5202            case KeyEvent.KEYCODE_TAB:
5203                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
5204                    if (shouldAdvanceFocusOnTab()) {
5205                        return 0;
5206                    }
5207                }
5208                break;
5209
5210                // Has to be done on key down (and not on key up) to correctly be intercepted.
5211            case KeyEvent.KEYCODE_BACK:
5212                if (mEditor != null && mEditor.mSelectionActionMode != null) {
5213                    stopSelectionActionMode();
5214                    return -1;
5215                }
5216                break;
5217        }
5218
5219        if (mEditor != null && mEditor.mKeyListener != null) {
5220            resetErrorChangedFlag();
5221
5222            boolean doDown = true;
5223            if (otherEvent != null) {
5224                try {
5225                    beginBatchEdit();
5226                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
5227                            otherEvent);
5228                    hideErrorIfUnchanged();
5229                    doDown = false;
5230                    if (handled) {
5231                        return -1;
5232                    }
5233                } catch (AbstractMethodError e) {
5234                    // onKeyOther was added after 1.0, so if it isn't
5235                    // implemented we need to try to dispatch as a regular down.
5236                } finally {
5237                    endBatchEdit();
5238                }
5239            }
5240
5241            if (doDown) {
5242                beginBatchEdit();
5243                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
5244                        keyCode, event);
5245                endBatchEdit();
5246                hideErrorIfUnchanged();
5247                if (handled) return 1;
5248            }
5249        }
5250
5251        // bug 650865: sometimes we get a key event before a layout.
5252        // don't try to move around if we don't know the layout.
5253
5254        if (mMovement != null && mLayout != null) {
5255            boolean doDown = true;
5256            if (otherEvent != null) {
5257                try {
5258                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
5259                            otherEvent);
5260                    doDown = false;
5261                    if (handled) {
5262                        return -1;
5263                    }
5264                } catch (AbstractMethodError e) {
5265                    // onKeyOther was added after 1.0, so if it isn't
5266                    // implemented we need to try to dispatch as a regular down.
5267                }
5268            }
5269            if (doDown) {
5270                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
5271                    return 2;
5272            }
5273        }
5274
5275        return 0;
5276    }
5277
5278    /**
5279     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
5280     * can be recorded.
5281     * @hide
5282     */
5283    public void resetErrorChangedFlag() {
5284        /*
5285         * Keep track of what the error was before doing the input
5286         * so that if an input filter changed the error, we leave
5287         * that error showing.  Otherwise, we take down whatever
5288         * error was showing when the user types something.
5289         */
5290        if (mEditor != null) mEditor.mErrorWasChanged = false;
5291    }
5292
5293    /**
5294     * @hide
5295     */
5296    public void hideErrorIfUnchanged() {
5297        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
5298            setError(null, null);
5299        }
5300    }
5301
5302    @Override
5303    public boolean onKeyUp(int keyCode, KeyEvent event) {
5304        if (!isEnabled()) {
5305            return super.onKeyUp(keyCode, event);
5306        }
5307
5308        switch (keyCode) {
5309            case KeyEvent.KEYCODE_DPAD_CENTER:
5310                if (event.hasNoModifiers()) {
5311                    /*
5312                     * If there is a click listener, just call through to
5313                     * super, which will invoke it.
5314                     *
5315                     * If there isn't a click listener, try to show the soft
5316                     * input method.  (It will also
5317                     * call performClick(), but that won't do anything in
5318                     * this case.)
5319                     */
5320                    if (!hasOnClickListeners()) {
5321                        if (mMovement != null && mText instanceof Editable
5322                                && mLayout != null && onCheckIsTextEditor()) {
5323                            InputMethodManager imm = InputMethodManager.peekInstance();
5324                            viewClicked(imm);
5325                            if (imm != null && getShowSoftInputOnFocus()) {
5326                                imm.showSoftInput(this, 0);
5327                            }
5328                        }
5329                    }
5330                }
5331                return super.onKeyUp(keyCode, event);
5332
5333            case KeyEvent.KEYCODE_ENTER:
5334                if (event.hasNoModifiers()) {
5335                    if (mEditor != null && mEditor.mInputContentType != null
5336                            && mEditor.mInputContentType.onEditorActionListener != null
5337                            && mEditor.mInputContentType.enterDown) {
5338                        mEditor.mInputContentType.enterDown = false;
5339                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5340                                this, EditorInfo.IME_NULL, event)) {
5341                            return true;
5342                        }
5343                    }
5344
5345                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5346                            || shouldAdvanceFocusOnEnter()) {
5347                        /*
5348                         * If there is a click listener, just call through to
5349                         * super, which will invoke it.
5350                         *
5351                         * If there isn't a click listener, try to advance focus,
5352                         * but still call through to super, which will reset the
5353                         * pressed state and longpress state.  (It will also
5354                         * call performClick(), but that won't do anything in
5355                         * this case.)
5356                         */
5357                        if (!hasOnClickListeners()) {
5358                            View v = focusSearch(FOCUS_DOWN);
5359
5360                            if (v != null) {
5361                                if (!v.requestFocus(FOCUS_DOWN)) {
5362                                    throw new IllegalStateException(
5363                                            "focus search returned a view " +
5364                                            "that wasn't able to take focus!");
5365                                }
5366
5367                                /*
5368                                 * Return true because we handled the key; super
5369                                 * will return false because there was no click
5370                                 * listener.
5371                                 */
5372                                super.onKeyUp(keyCode, event);
5373                                return true;
5374                            } else if ((event.getFlags()
5375                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
5376                                // No target for next focus, but make sure the IME
5377                                // if this came from it.
5378                                InputMethodManager imm = InputMethodManager.peekInstance();
5379                                if (imm != null && imm.isActive(this)) {
5380                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
5381                                }
5382                            }
5383                        }
5384                    }
5385                    return super.onKeyUp(keyCode, event);
5386                }
5387                break;
5388        }
5389
5390        if (mEditor != null && mEditor.mKeyListener != null)
5391            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
5392                return true;
5393
5394        if (mMovement != null && mLayout != null)
5395            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
5396                return true;
5397
5398        return super.onKeyUp(keyCode, event);
5399    }
5400
5401    @Override
5402    public boolean onCheckIsTextEditor() {
5403        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
5404    }
5405
5406    @Override
5407    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
5408        if (onCheckIsTextEditor() && isEnabled()) {
5409            mEditor.createInputMethodStateIfNeeded();
5410            outAttrs.inputType = getInputType();
5411            if (mEditor.mInputContentType != null) {
5412                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
5413                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
5414                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
5415                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
5416                outAttrs.extras = mEditor.mInputContentType.extras;
5417            } else {
5418                outAttrs.imeOptions = EditorInfo.IME_NULL;
5419            }
5420            if (focusSearch(FOCUS_DOWN) != null) {
5421                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
5422            }
5423            if (focusSearch(FOCUS_UP) != null) {
5424                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
5425            }
5426            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
5427                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
5428                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
5429                    // An action has not been set, but the enter key will move to
5430                    // the next focus, so set the action to that.
5431                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
5432                } else {
5433                    // An action has not been set, and there is no focus to move
5434                    // to, so let's just supply a "done" action.
5435                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
5436                }
5437                if (!shouldAdvanceFocusOnEnter()) {
5438                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5439                }
5440            }
5441            if (isMultilineInputType(outAttrs.inputType)) {
5442                // Multi-line text editors should always show an enter key.
5443                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5444            }
5445            outAttrs.hintText = mHint;
5446            if (mText instanceof Editable) {
5447                InputConnection ic = new EditableInputConnection(this);
5448                outAttrs.initialSelStart = getSelectionStart();
5449                outAttrs.initialSelEnd = getSelectionEnd();
5450                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
5451                return ic;
5452            }
5453        }
5454        return null;
5455    }
5456
5457    /**
5458     * If this TextView contains editable content, extract a portion of it
5459     * based on the information in <var>request</var> in to <var>outText</var>.
5460     * @return Returns true if the text was successfully extracted, else false.
5461     */
5462    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
5463        createEditorIfNeeded();
5464        return mEditor.extractText(request, outText);
5465    }
5466
5467    /**
5468     * This is used to remove all style-impacting spans from text before new
5469     * extracted text is being replaced into it, so that we don't have any
5470     * lingering spans applied during the replace.
5471     */
5472    static void removeParcelableSpans(Spannable spannable, int start, int end) {
5473        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
5474        int i = spans.length;
5475        while (i > 0) {
5476            i--;
5477            spannable.removeSpan(spans[i]);
5478        }
5479    }
5480
5481    /**
5482     * Apply to this text view the given extracted text, as previously
5483     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
5484     */
5485    public void setExtractedText(ExtractedText text) {
5486        Editable content = getEditableText();
5487        if (text.text != null) {
5488            if (content == null) {
5489                setText(text.text, TextView.BufferType.EDITABLE);
5490            } else if (text.partialStartOffset < 0) {
5491                removeParcelableSpans(content, 0, content.length());
5492                content.replace(0, content.length(), text.text);
5493            } else {
5494                final int N = content.length();
5495                int start = text.partialStartOffset;
5496                if (start > N) start = N;
5497                int end = text.partialEndOffset;
5498                if (end > N) end = N;
5499                removeParcelableSpans(content, start, end);
5500                content.replace(start, end, text.text);
5501            }
5502        }
5503
5504        // Now set the selection position...  make sure it is in range, to
5505        // avoid crashes.  If this is a partial update, it is possible that
5506        // the underlying text may have changed, causing us problems here.
5507        // Also we just don't want to trust clients to do the right thing.
5508        Spannable sp = (Spannable)getText();
5509        final int N = sp.length();
5510        int start = text.selectionStart;
5511        if (start < 0) start = 0;
5512        else if (start > N) start = N;
5513        int end = text.selectionEnd;
5514        if (end < 0) end = 0;
5515        else if (end > N) end = N;
5516        Selection.setSelection(sp, start, end);
5517
5518        // Finally, update the selection mode.
5519        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
5520            MetaKeyKeyListener.startSelecting(this, sp);
5521        } else {
5522            MetaKeyKeyListener.stopSelecting(this, sp);
5523        }
5524    }
5525
5526    /**
5527     * @hide
5528     */
5529    public void setExtracting(ExtractedTextRequest req) {
5530        if (mEditor.mInputMethodState != null) {
5531            mEditor.mInputMethodState.mExtractedTextRequest = req;
5532        }
5533        // This would stop a possible selection mode, but no such mode is started in case
5534        // extracted mode will start. Some text is selected though, and will trigger an action mode
5535        // in the extracted view.
5536        mEditor.hideControllers();
5537    }
5538
5539    /**
5540     * Called by the framework in response to a text completion from
5541     * the current input method, provided by it calling
5542     * {@link InputConnection#commitCompletion
5543     * InputConnection.commitCompletion()}.  The default implementation does
5544     * nothing; text views that are supporting auto-completion should override
5545     * this to do their desired behavior.
5546     *
5547     * @param text The auto complete text the user has selected.
5548     */
5549    public void onCommitCompletion(CompletionInfo text) {
5550        // intentionally empty
5551    }
5552
5553    /**
5554     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
5555     * a dictionnary) from the current input method, provided by it calling
5556     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
5557     * implementation flashes the background of the corrected word to provide feedback to the user.
5558     *
5559     * @param info The auto correct info about the text that was corrected.
5560     */
5561    public void onCommitCorrection(CorrectionInfo info) {
5562        if (mEditor != null) mEditor.onCommitCorrection(info);
5563    }
5564
5565    public void beginBatchEdit() {
5566        if (mEditor != null) mEditor.beginBatchEdit();
5567    }
5568
5569    public void endBatchEdit() {
5570        if (mEditor != null) mEditor.endBatchEdit();
5571    }
5572
5573    /**
5574     * Called by the framework in response to a request to begin a batch
5575     * of edit operations through a call to link {@link #beginBatchEdit()}.
5576     */
5577    public void onBeginBatchEdit() {
5578        // intentionally empty
5579    }
5580
5581    /**
5582     * Called by the framework in response to a request to end a batch
5583     * of edit operations through a call to link {@link #endBatchEdit}.
5584     */
5585    public void onEndBatchEdit() {
5586        // intentionally empty
5587    }
5588
5589    /**
5590     * Called by the framework in response to a private command from the
5591     * current method, provided by it calling
5592     * {@link InputConnection#performPrivateCommand
5593     * InputConnection.performPrivateCommand()}.
5594     *
5595     * @param action The action name of the command.
5596     * @param data Any additional data for the command.  This may be null.
5597     * @return Return true if you handled the command, else false.
5598     */
5599    public boolean onPrivateIMECommand(String action, Bundle data) {
5600        return false;
5601    }
5602
5603    private void nullLayouts() {
5604        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
5605            mSavedLayout = (BoringLayout) mLayout;
5606        }
5607        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
5608            mSavedHintLayout = (BoringLayout) mHintLayout;
5609        }
5610
5611        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
5612
5613        mBoring = mHintBoring = null;
5614
5615        // Since it depends on the value of mLayout
5616        if (mEditor != null) mEditor.prepareCursorControllers();
5617    }
5618
5619    /**
5620     * Make a new Layout based on the already-measured size of the view,
5621     * on the assumption that it was measured correctly at some point.
5622     */
5623    private void assumeLayout() {
5624        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5625
5626        if (width < 1) {
5627            width = 0;
5628        }
5629
5630        int physicalWidth = width;
5631
5632        if (mHorizontallyScrolling) {
5633            width = VERY_WIDE;
5634        }
5635
5636        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
5637                      physicalWidth, false);
5638    }
5639
5640    @Override
5641    public void onResolvedLayoutDirectionReset() {
5642        if (mLayoutAlignment != null) {
5643            if (mResolvedTextAlignment == TEXT_ALIGNMENT_VIEW_START ||
5644                    mResolvedTextAlignment == TEXT_ALIGNMENT_VIEW_END) {
5645                mLayoutAlignment = null;
5646            }
5647        }
5648    }
5649
5650    private Layout.Alignment getLayoutAlignment() {
5651        if (mLayoutAlignment == null) {
5652            mResolvedTextAlignment = getResolvedTextAlignment();
5653            switch (mResolvedTextAlignment) {
5654                case TEXT_ALIGNMENT_GRAVITY:
5655                    switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
5656                        case Gravity.START:
5657                            mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5658                            break;
5659                        case Gravity.END:
5660                            mLayoutAlignment = Layout.Alignment.ALIGN_OPPOSITE;
5661                            break;
5662                        case Gravity.LEFT:
5663                            mLayoutAlignment = Layout.Alignment.ALIGN_LEFT;
5664                            break;
5665                        case Gravity.RIGHT:
5666                            mLayoutAlignment = Layout.Alignment.ALIGN_RIGHT;
5667                            break;
5668                        case Gravity.CENTER_HORIZONTAL:
5669                            mLayoutAlignment = Layout.Alignment.ALIGN_CENTER;
5670                            break;
5671                        default:
5672                            mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5673                            break;
5674                    }
5675                    break;
5676                case TEXT_ALIGNMENT_TEXT_START:
5677                    mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5678                    break;
5679                case TEXT_ALIGNMENT_TEXT_END:
5680                    mLayoutAlignment = Layout.Alignment.ALIGN_OPPOSITE;
5681                    break;
5682                case TEXT_ALIGNMENT_CENTER:
5683                    mLayoutAlignment = Layout.Alignment.ALIGN_CENTER;
5684                    break;
5685                case TEXT_ALIGNMENT_VIEW_START:
5686                    mLayoutAlignment = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
5687                            Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
5688                    break;
5689                case TEXT_ALIGNMENT_VIEW_END:
5690                    mLayoutAlignment = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
5691                            Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
5692                    break;
5693                case TEXT_ALIGNMENT_INHERIT:
5694                    // This should never happen as we have already resolved the text alignment
5695                    // but better safe than sorry so we just fall through
5696                default:
5697                    mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5698                    break;
5699            }
5700        }
5701        return mLayoutAlignment;
5702    }
5703
5704    /**
5705     * The width passed in is now the desired layout width,
5706     * not the full view width with padding.
5707     * {@hide}
5708     */
5709    protected void makeNewLayout(int wantWidth, int hintWidth,
5710                                 BoringLayout.Metrics boring,
5711                                 BoringLayout.Metrics hintBoring,
5712                                 int ellipsisWidth, boolean bringIntoView) {
5713        stopMarquee();
5714
5715        // Update "old" cached values
5716        mOldMaximum = mMaximum;
5717        mOldMaxMode = mMaxMode;
5718
5719        mHighlightPathBogus = true;
5720
5721        if (wantWidth < 0) {
5722            wantWidth = 0;
5723        }
5724        if (hintWidth < 0) {
5725            hintWidth = 0;
5726        }
5727
5728        Layout.Alignment alignment = getLayoutAlignment();
5729        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
5730        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
5731                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
5732        TruncateAt effectiveEllipsize = mEllipsize;
5733        if (mEllipsize == TruncateAt.MARQUEE &&
5734                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5735            effectiveEllipsize = TruncateAt.END_SMALL;
5736        }
5737
5738        if (mTextDir == null) {
5739            resolveTextDirection();
5740        }
5741
5742        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
5743                effectiveEllipsize, effectiveEllipsize == mEllipsize);
5744        if (switchEllipsize) {
5745            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
5746                    TruncateAt.END : TruncateAt.MARQUEE;
5747            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
5748                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
5749        }
5750
5751        shouldEllipsize = mEllipsize != null;
5752        mHintLayout = null;
5753
5754        if (mHint != null) {
5755            if (shouldEllipsize) hintWidth = wantWidth;
5756
5757            if (hintBoring == UNKNOWN_BORING) {
5758                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
5759                                                   mHintBoring);
5760                if (hintBoring != null) {
5761                    mHintBoring = hintBoring;
5762                }
5763            }
5764
5765            if (hintBoring != null) {
5766                if (hintBoring.width <= hintWidth &&
5767                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
5768                    if (mSavedHintLayout != null) {
5769                        mHintLayout = mSavedHintLayout.
5770                                replaceOrMake(mHint, mTextPaint,
5771                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5772                                hintBoring, mIncludePad);
5773                    } else {
5774                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5775                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5776                                hintBoring, mIncludePad);
5777                    }
5778
5779                    mSavedHintLayout = (BoringLayout) mHintLayout;
5780                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
5781                    if (mSavedHintLayout != null) {
5782                        mHintLayout = mSavedHintLayout.
5783                                replaceOrMake(mHint, mTextPaint,
5784                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5785                                hintBoring, mIncludePad, mEllipsize,
5786                                ellipsisWidth);
5787                    } else {
5788                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5789                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5790                                hintBoring, mIncludePad, mEllipsize,
5791                                ellipsisWidth);
5792                    }
5793                } else if (shouldEllipsize) {
5794                    mHintLayout = new StaticLayout(mHint,
5795                                0, mHint.length(),
5796                                mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5797                                mSpacingAdd, mIncludePad, mEllipsize,
5798                                ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5799                } else {
5800                    mHintLayout = new StaticLayout(mHint, mTextPaint,
5801                            hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5802                            mIncludePad);
5803                }
5804            } else if (shouldEllipsize) {
5805                mHintLayout = new StaticLayout(mHint,
5806                            0, mHint.length(),
5807                            mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5808                            mSpacingAdd, mIncludePad, mEllipsize,
5809                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5810            } else {
5811                mHintLayout = new StaticLayout(mHint, mTextPaint,
5812                        hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5813                        mIncludePad);
5814            }
5815        }
5816
5817        if (bringIntoView) {
5818            registerForPreDraw();
5819        }
5820
5821        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5822            if (!compressText(ellipsisWidth)) {
5823                final int height = mLayoutParams.height;
5824                // If the size of the view does not depend on the size of the text, try to
5825                // start the marquee immediately
5826                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
5827                    startMarquee();
5828                } else {
5829                    // Defer the start of the marquee until we know our width (see setFrame())
5830                    mRestartMarquee = true;
5831                }
5832            }
5833        }
5834
5835        // CursorControllers need a non-null mLayout
5836        if (mEditor != null) mEditor.prepareCursorControllers();
5837    }
5838
5839    private Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
5840            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
5841            boolean useSaved) {
5842        Layout result = null;
5843        if (mText instanceof Spannable) {
5844            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
5845                    alignment, mTextDir, mSpacingMult,
5846                    mSpacingAdd, mIncludePad, getKeyListener() == null ? effectiveEllipsize : null,
5847                            ellipsisWidth);
5848        } else {
5849            if (boring == UNKNOWN_BORING) {
5850                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
5851                if (boring != null) {
5852                    mBoring = boring;
5853                }
5854            }
5855
5856            if (boring != null) {
5857                if (boring.width <= wantWidth &&
5858                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
5859                    if (useSaved && mSavedLayout != null) {
5860                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
5861                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5862                                boring, mIncludePad);
5863                    } else {
5864                        result = BoringLayout.make(mTransformed, mTextPaint,
5865                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5866                                boring, mIncludePad);
5867                    }
5868
5869                    if (useSaved) {
5870                        mSavedLayout = (BoringLayout) result;
5871                    }
5872                } else if (shouldEllipsize && boring.width <= wantWidth) {
5873                    if (useSaved && mSavedLayout != null) {
5874                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
5875                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5876                                boring, mIncludePad, effectiveEllipsize,
5877                                ellipsisWidth);
5878                    } else {
5879                        result = BoringLayout.make(mTransformed, mTextPaint,
5880                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5881                                boring, mIncludePad, effectiveEllipsize,
5882                                ellipsisWidth);
5883                    }
5884                } else if (shouldEllipsize) {
5885                    result = new StaticLayout(mTransformed,
5886                            0, mTransformed.length(),
5887                            mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
5888                            mSpacingAdd, mIncludePad, effectiveEllipsize,
5889                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5890                } else {
5891                    result = new StaticLayout(mTransformed, mTextPaint,
5892                            wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5893                            mIncludePad);
5894                }
5895            } else if (shouldEllipsize) {
5896                result = new StaticLayout(mTransformed,
5897                        0, mTransformed.length(),
5898                        mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
5899                        mSpacingAdd, mIncludePad, effectiveEllipsize,
5900                        ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5901            } else {
5902                result = new StaticLayout(mTransformed, mTextPaint,
5903                        wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5904                        mIncludePad);
5905            }
5906        }
5907        return result;
5908    }
5909
5910    private boolean compressText(float width) {
5911        if (isHardwareAccelerated()) return false;
5912
5913        // Only compress the text if it hasn't been compressed by the previous pass
5914        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
5915                mTextPaint.getTextScaleX() == 1.0f) {
5916            final float textWidth = mLayout.getLineWidth(0);
5917            final float overflow = (textWidth + 1.0f - width) / width;
5918            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
5919                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
5920                post(new Runnable() {
5921                    public void run() {
5922                        requestLayout();
5923                    }
5924                });
5925                return true;
5926            }
5927        }
5928
5929        return false;
5930    }
5931
5932    private static int desired(Layout layout) {
5933        int n = layout.getLineCount();
5934        CharSequence text = layout.getText();
5935        float max = 0;
5936
5937        // if any line was wrapped, we can't use it.
5938        // but it's ok for the last line not to have a newline
5939
5940        for (int i = 0; i < n - 1; i++) {
5941            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
5942                return -1;
5943        }
5944
5945        for (int i = 0; i < n; i++) {
5946            max = Math.max(max, layout.getLineWidth(i));
5947        }
5948
5949        return (int) FloatMath.ceil(max);
5950    }
5951
5952    /**
5953     * Set whether the TextView includes extra top and bottom padding to make
5954     * room for accents that go above the normal ascent and descent.
5955     * The default is true.
5956     *
5957     * @see #getIncludeFontPadding()
5958     *
5959     * @attr ref android.R.styleable#TextView_includeFontPadding
5960     */
5961    public void setIncludeFontPadding(boolean includepad) {
5962        if (mIncludePad != includepad) {
5963            mIncludePad = includepad;
5964
5965            if (mLayout != null) {
5966                nullLayouts();
5967                requestLayout();
5968                invalidate();
5969            }
5970        }
5971    }
5972
5973    /**
5974     * Gets whether the TextView includes extra top and bottom padding to make
5975     * room for accents that go above the normal ascent and descent.
5976     *
5977     * @see #setIncludeFontPadding(boolean)
5978     *
5979     * @attr ref android.R.styleable#TextView_includeFontPadding
5980     */
5981    public boolean getIncludeFontPadding() {
5982        return mIncludePad;
5983    }
5984
5985    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
5986
5987    @Override
5988    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
5989        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
5990        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
5991        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
5992        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
5993
5994        int width;
5995        int height;
5996
5997        BoringLayout.Metrics boring = UNKNOWN_BORING;
5998        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
5999
6000        if (mTextDir == null) {
6001            resolveTextDirection();
6002        }
6003
6004        int des = -1;
6005        boolean fromexisting = false;
6006
6007        if (widthMode == MeasureSpec.EXACTLY) {
6008            // Parent has told us how big to be. So be it.
6009            width = widthSize;
6010        } else {
6011            if (mLayout != null && mEllipsize == null) {
6012                des = desired(mLayout);
6013            }
6014
6015            if (des < 0) {
6016                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6017                if (boring != null) {
6018                    mBoring = boring;
6019                }
6020            } else {
6021                fromexisting = true;
6022            }
6023
6024            if (boring == null || boring == UNKNOWN_BORING) {
6025                if (des < 0) {
6026                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
6027                }
6028                width = des;
6029            } else {
6030                width = boring.width;
6031            }
6032
6033            final Drawables dr = mDrawables;
6034            if (dr != null) {
6035                width = Math.max(width, dr.mDrawableWidthTop);
6036                width = Math.max(width, dr.mDrawableWidthBottom);
6037            }
6038
6039            if (mHint != null) {
6040                int hintDes = -1;
6041                int hintWidth;
6042
6043                if (mHintLayout != null && mEllipsize == null) {
6044                    hintDes = desired(mHintLayout);
6045                }
6046
6047                if (hintDes < 0) {
6048                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
6049                    if (hintBoring != null) {
6050                        mHintBoring = hintBoring;
6051                    }
6052                }
6053
6054                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
6055                    if (hintDes < 0) {
6056                        hintDes = (int) FloatMath.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
6057                    }
6058                    hintWidth = hintDes;
6059                } else {
6060                    hintWidth = hintBoring.width;
6061                }
6062
6063                if (hintWidth > width) {
6064                    width = hintWidth;
6065                }
6066            }
6067
6068            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
6069
6070            if (mMaxWidthMode == EMS) {
6071                width = Math.min(width, mMaxWidth * getLineHeight());
6072            } else {
6073                width = Math.min(width, mMaxWidth);
6074            }
6075
6076            if (mMinWidthMode == EMS) {
6077                width = Math.max(width, mMinWidth * getLineHeight());
6078            } else {
6079                width = Math.max(width, mMinWidth);
6080            }
6081
6082            // Check against our minimum width
6083            width = Math.max(width, getSuggestedMinimumWidth());
6084
6085            if (widthMode == MeasureSpec.AT_MOST) {
6086                width = Math.min(widthSize, width);
6087            }
6088        }
6089
6090        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
6091        int unpaddedWidth = want;
6092
6093        if (mHorizontallyScrolling) want = VERY_WIDE;
6094
6095        int hintWant = want;
6096        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
6097
6098        if (mLayout == null) {
6099            makeNewLayout(want, hintWant, boring, hintBoring,
6100                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6101        } else {
6102            final boolean layoutChanged = (mLayout.getWidth() != want) ||
6103                    (hintWidth != hintWant) ||
6104                    (mLayout.getEllipsizedWidth() !=
6105                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
6106
6107            final boolean widthChanged = (mHint == null) &&
6108                    (mEllipsize == null) &&
6109                    (want > mLayout.getWidth()) &&
6110                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
6111
6112            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
6113
6114            if (layoutChanged || maximumChanged) {
6115                if (!maximumChanged && widthChanged) {
6116                    mLayout.increaseWidthTo(want);
6117                } else {
6118                    makeNewLayout(want, hintWant, boring, hintBoring,
6119                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6120                }
6121            } else {
6122                // Nothing has changed
6123            }
6124        }
6125
6126        if (heightMode == MeasureSpec.EXACTLY) {
6127            // Parent has told us how big to be. So be it.
6128            height = heightSize;
6129            mDesiredHeightAtMeasure = -1;
6130        } else {
6131            int desired = getDesiredHeight();
6132
6133            height = desired;
6134            mDesiredHeightAtMeasure = desired;
6135
6136            if (heightMode == MeasureSpec.AT_MOST) {
6137                height = Math.min(desired, heightSize);
6138            }
6139        }
6140
6141        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
6142        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
6143            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
6144        }
6145
6146        /*
6147         * We didn't let makeNewLayout() register to bring the cursor into view,
6148         * so do it here if there is any possibility that it is needed.
6149         */
6150        if (mMovement != null ||
6151            mLayout.getWidth() > unpaddedWidth ||
6152            mLayout.getHeight() > unpaddedHeight) {
6153            registerForPreDraw();
6154        } else {
6155            scrollTo(0, 0);
6156        }
6157
6158        setMeasuredDimension(width, height);
6159    }
6160
6161    private int getDesiredHeight() {
6162        return Math.max(
6163                getDesiredHeight(mLayout, true),
6164                getDesiredHeight(mHintLayout, mEllipsize != null));
6165    }
6166
6167    private int getDesiredHeight(Layout layout, boolean cap) {
6168        if (layout == null) {
6169            return 0;
6170        }
6171
6172        int linecount = layout.getLineCount();
6173        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
6174        int desired = layout.getLineTop(linecount);
6175
6176        final Drawables dr = mDrawables;
6177        if (dr != null) {
6178            desired = Math.max(desired, dr.mDrawableHeightLeft);
6179            desired = Math.max(desired, dr.mDrawableHeightRight);
6180        }
6181
6182        desired += pad;
6183
6184        if (mMaxMode == LINES) {
6185            /*
6186             * Don't cap the hint to a certain number of lines.
6187             * (Do cap it, though, if we have a maximum pixel height.)
6188             */
6189            if (cap) {
6190                if (linecount > mMaximum) {
6191                    desired = layout.getLineTop(mMaximum);
6192
6193                    if (dr != null) {
6194                        desired = Math.max(desired, dr.mDrawableHeightLeft);
6195                        desired = Math.max(desired, dr.mDrawableHeightRight);
6196                    }
6197
6198                    desired += pad;
6199                    linecount = mMaximum;
6200                }
6201            }
6202        } else {
6203            desired = Math.min(desired, mMaximum);
6204        }
6205
6206        if (mMinMode == LINES) {
6207            if (linecount < mMinimum) {
6208                desired += getLineHeight() * (mMinimum - linecount);
6209            }
6210        } else {
6211            desired = Math.max(desired, mMinimum);
6212        }
6213
6214        // Check against our minimum height
6215        desired = Math.max(desired, getSuggestedMinimumHeight());
6216
6217        return desired;
6218    }
6219
6220    /**
6221     * Check whether a change to the existing text layout requires a
6222     * new view layout.
6223     */
6224    private void checkForResize() {
6225        boolean sizeChanged = false;
6226
6227        if (mLayout != null) {
6228            // Check if our width changed
6229            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
6230                sizeChanged = true;
6231                invalidate();
6232            }
6233
6234            // Check if our height changed
6235            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
6236                int desiredHeight = getDesiredHeight();
6237
6238                if (desiredHeight != this.getHeight()) {
6239                    sizeChanged = true;
6240                }
6241            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
6242                if (mDesiredHeightAtMeasure >= 0) {
6243                    int desiredHeight = getDesiredHeight();
6244
6245                    if (desiredHeight != mDesiredHeightAtMeasure) {
6246                        sizeChanged = true;
6247                    }
6248                }
6249            }
6250        }
6251
6252        if (sizeChanged) {
6253            requestLayout();
6254            // caller will have already invalidated
6255        }
6256    }
6257
6258    /**
6259     * Check whether entirely new text requires a new view layout
6260     * or merely a new text layout.
6261     */
6262    private void checkForRelayout() {
6263        // If we have a fixed width, we can just swap in a new text layout
6264        // if the text height stays the same or if the view height is fixed.
6265
6266        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
6267                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
6268                (mHint == null || mHintLayout != null) &&
6269                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
6270            // Static width, so try making a new text layout.
6271
6272            int oldht = mLayout.getHeight();
6273            int want = mLayout.getWidth();
6274            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
6275
6276            /*
6277             * No need to bring the text into view, since the size is not
6278             * changing (unless we do the requestLayout(), in which case it
6279             * will happen at measure).
6280             */
6281            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
6282                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
6283                          false);
6284
6285            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
6286                // In a fixed-height view, so use our new text layout.
6287                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
6288                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
6289                    invalidate();
6290                    return;
6291                }
6292
6293                // Dynamic height, but height has stayed the same,
6294                // so use our new text layout.
6295                if (mLayout.getHeight() == oldht &&
6296                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
6297                    invalidate();
6298                    return;
6299                }
6300            }
6301
6302            // We lose: the height has changed and we have a dynamic height.
6303            // Request a new view layout using our new text layout.
6304            requestLayout();
6305            invalidate();
6306        } else {
6307            // Dynamic width, so we have no choice but to request a new
6308            // view layout with a new text layout.
6309            nullLayouts();
6310            requestLayout();
6311            invalidate();
6312        }
6313    }
6314
6315    @Override
6316    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
6317        super.onLayout(changed, left, top, right, bottom);
6318        if (changed && mEditor != null) mEditor.invalidateTextDisplayList();
6319    }
6320
6321    private boolean isShowingHint() {
6322        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
6323    }
6324
6325    /**
6326     * Returns true if anything changed.
6327     */
6328    private boolean bringTextIntoView() {
6329        Layout layout = isShowingHint() ? mHintLayout : mLayout;
6330        int line = 0;
6331        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6332            line = layout.getLineCount() - 1;
6333        }
6334
6335        Layout.Alignment a = layout.getParagraphAlignment(line);
6336        int dir = layout.getParagraphDirection(line);
6337        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6338        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6339        int ht = layout.getHeight();
6340
6341        int scrollx, scrolly;
6342
6343        // Convert to left, center, or right alignment.
6344        if (a == Layout.Alignment.ALIGN_NORMAL) {
6345            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
6346                Layout.Alignment.ALIGN_RIGHT;
6347        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
6348            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
6349                Layout.Alignment.ALIGN_LEFT;
6350        }
6351
6352        if (a == Layout.Alignment.ALIGN_CENTER) {
6353            /*
6354             * Keep centered if possible, or, if it is too wide to fit,
6355             * keep leading edge in view.
6356             */
6357
6358            int left = (int) FloatMath.floor(layout.getLineLeft(line));
6359            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6360
6361            if (right - left < hspace) {
6362                scrollx = (right + left) / 2 - hspace / 2;
6363            } else {
6364                if (dir < 0) {
6365                    scrollx = right - hspace;
6366                } else {
6367                    scrollx = left;
6368                }
6369            }
6370        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
6371            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6372            scrollx = right - hspace;
6373        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
6374            scrollx = (int) FloatMath.floor(layout.getLineLeft(line));
6375        }
6376
6377        if (ht < vspace) {
6378            scrolly = 0;
6379        } else {
6380            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6381                scrolly = ht - vspace;
6382            } else {
6383                scrolly = 0;
6384            }
6385        }
6386
6387        if (scrollx != mScrollX || scrolly != mScrollY) {
6388            scrollTo(scrollx, scrolly);
6389            return true;
6390        } else {
6391            return false;
6392        }
6393    }
6394
6395    /**
6396     * Move the point, specified by the offset, into the view if it is needed.
6397     * This has to be called after layout. Returns true if anything changed.
6398     */
6399    public boolean bringPointIntoView(int offset) {
6400        boolean changed = false;
6401
6402        Layout layout = isShowingHint() ? mHintLayout: mLayout;
6403
6404        if (layout == null) return changed;
6405
6406        int line = layout.getLineForOffset(offset);
6407
6408        // FIXME: Is it okay to truncate this, or should we round?
6409        final int x = (int)layout.getPrimaryHorizontal(offset);
6410        final int top = layout.getLineTop(line);
6411        final int bottom = layout.getLineTop(line + 1);
6412
6413        int left = (int) FloatMath.floor(layout.getLineLeft(line));
6414        int right = (int) FloatMath.ceil(layout.getLineRight(line));
6415        int ht = layout.getHeight();
6416
6417        int grav;
6418
6419        switch (layout.getParagraphAlignment(line)) {
6420            case ALIGN_LEFT:
6421                grav = 1;
6422                break;
6423            case ALIGN_RIGHT:
6424                grav = -1;
6425                break;
6426            case ALIGN_NORMAL:
6427                grav = layout.getParagraphDirection(line);
6428                break;
6429            case ALIGN_OPPOSITE:
6430                grav = -layout.getParagraphDirection(line);
6431                break;
6432            case ALIGN_CENTER:
6433            default:
6434                grav = 0;
6435                break;
6436        }
6437
6438        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6439        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6440
6441        int hslack = (bottom - top) / 2;
6442        int vslack = hslack;
6443
6444        if (vslack > vspace / 4)
6445            vslack = vspace / 4;
6446        if (hslack > hspace / 4)
6447            hslack = hspace / 4;
6448
6449        int hs = mScrollX;
6450        int vs = mScrollY;
6451
6452        if (top - vs < vslack)
6453            vs = top - vslack;
6454        if (bottom - vs > vspace - vslack)
6455            vs = bottom - (vspace - vslack);
6456        if (ht - vs < vspace)
6457            vs = ht - vspace;
6458        if (0 - vs > 0)
6459            vs = 0;
6460
6461        if (grav != 0) {
6462            if (x - hs < hslack) {
6463                hs = x - hslack;
6464            }
6465            if (x - hs > hspace - hslack) {
6466                hs = x - (hspace - hslack);
6467            }
6468        }
6469
6470        if (grav < 0) {
6471            if (left - hs > 0)
6472                hs = left;
6473            if (right - hs < hspace)
6474                hs = right - hspace;
6475        } else if (grav > 0) {
6476            if (right - hs < hspace)
6477                hs = right - hspace;
6478            if (left - hs > 0)
6479                hs = left;
6480        } else /* grav == 0 */ {
6481            if (right - left <= hspace) {
6482                /*
6483                 * If the entire text fits, center it exactly.
6484                 */
6485                hs = left - (hspace - (right - left)) / 2;
6486            } else if (x > right - hslack) {
6487                /*
6488                 * If we are near the right edge, keep the right edge
6489                 * at the edge of the view.
6490                 */
6491                hs = right - hspace;
6492            } else if (x < left + hslack) {
6493                /*
6494                 * If we are near the left edge, keep the left edge
6495                 * at the edge of the view.
6496                 */
6497                hs = left;
6498            } else if (left > hs) {
6499                /*
6500                 * Is there whitespace visible at the left?  Fix it if so.
6501                 */
6502                hs = left;
6503            } else if (right < hs + hspace) {
6504                /*
6505                 * Is there whitespace visible at the right?  Fix it if so.
6506                 */
6507                hs = right - hspace;
6508            } else {
6509                /*
6510                 * Otherwise, float as needed.
6511                 */
6512                if (x - hs < hslack) {
6513                    hs = x - hslack;
6514                }
6515                if (x - hs > hspace - hslack) {
6516                    hs = x - (hspace - hslack);
6517                }
6518            }
6519        }
6520
6521        if (hs != mScrollX || vs != mScrollY) {
6522            if (mScroller == null) {
6523                scrollTo(hs, vs);
6524            } else {
6525                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
6526                int dx = hs - mScrollX;
6527                int dy = vs - mScrollY;
6528
6529                if (duration > ANIMATED_SCROLL_GAP) {
6530                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
6531                    awakenScrollBars(mScroller.getDuration());
6532                    invalidate();
6533                } else {
6534                    if (!mScroller.isFinished()) {
6535                        mScroller.abortAnimation();
6536                    }
6537
6538                    scrollBy(dx, dy);
6539                }
6540
6541                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
6542            }
6543
6544            changed = true;
6545        }
6546
6547        if (isFocused()) {
6548            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
6549            // requestRectangleOnScreen() is in terms of content coordinates.
6550
6551            // The offsets here are to ensure the rectangle we are using is
6552            // within our view bounds, in case the cursor is on the far left
6553            // or right.  If it isn't withing the bounds, then this request
6554            // will be ignored.
6555            if (mTempRect == null) mTempRect = new Rect();
6556            mTempRect.set(x - 2, top, x + 2, bottom);
6557            getInterestingRect(mTempRect, line);
6558            mTempRect.offset(mScrollX, mScrollY);
6559
6560            if (requestRectangleOnScreen(mTempRect)) {
6561                changed = true;
6562            }
6563        }
6564
6565        return changed;
6566    }
6567
6568    /**
6569     * Move the cursor, if needed, so that it is at an offset that is visible
6570     * to the user.  This will not move the cursor if it represents more than
6571     * one character (a selection range).  This will only work if the
6572     * TextView contains spannable text; otherwise it will do nothing.
6573     *
6574     * @return True if the cursor was actually moved, false otherwise.
6575     */
6576    public boolean moveCursorToVisibleOffset() {
6577        if (!(mText instanceof Spannable)) {
6578            return false;
6579        }
6580        int start = getSelectionStart();
6581        int end = getSelectionEnd();
6582        if (start != end) {
6583            return false;
6584        }
6585
6586        // First: make sure the line is visible on screen:
6587
6588        int line = mLayout.getLineForOffset(start);
6589
6590        final int top = mLayout.getLineTop(line);
6591        final int bottom = mLayout.getLineTop(line + 1);
6592        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6593        int vslack = (bottom - top) / 2;
6594        if (vslack > vspace / 4)
6595            vslack = vspace / 4;
6596        final int vs = mScrollY;
6597
6598        if (top < (vs+vslack)) {
6599            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
6600        } else if (bottom > (vspace+vs-vslack)) {
6601            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
6602        }
6603
6604        // Next: make sure the character is visible on screen:
6605
6606        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6607        final int hs = mScrollX;
6608        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
6609        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
6610
6611        // line might contain bidirectional text
6612        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
6613        final int highChar = leftChar > rightChar ? leftChar : rightChar;
6614
6615        int newStart = start;
6616        if (newStart < lowChar) {
6617            newStart = lowChar;
6618        } else if (newStart > highChar) {
6619            newStart = highChar;
6620        }
6621
6622        if (newStart != start) {
6623            Selection.setSelection((Spannable)mText, newStart);
6624            return true;
6625        }
6626
6627        return false;
6628    }
6629
6630    @Override
6631    public void computeScroll() {
6632        if (mScroller != null) {
6633            if (mScroller.computeScrollOffset()) {
6634                mScrollX = mScroller.getCurrX();
6635                mScrollY = mScroller.getCurrY();
6636                invalidateParentCaches();
6637                postInvalidate();  // So we draw again
6638            }
6639        }
6640    }
6641
6642    private void getInterestingRect(Rect r, int line) {
6643        convertFromViewportToContentCoordinates(r);
6644
6645        // Rectangle can can be expanded on first and last line to take
6646        // padding into account.
6647        // TODO Take left/right padding into account too?
6648        if (line == 0) r.top -= getExtendedPaddingTop();
6649        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
6650    }
6651
6652    private void convertFromViewportToContentCoordinates(Rect r) {
6653        final int horizontalOffset = viewportToContentHorizontalOffset();
6654        r.left += horizontalOffset;
6655        r.right += horizontalOffset;
6656
6657        final int verticalOffset = viewportToContentVerticalOffset();
6658        r.top += verticalOffset;
6659        r.bottom += verticalOffset;
6660    }
6661
6662    int viewportToContentHorizontalOffset() {
6663        return getCompoundPaddingLeft() - mScrollX;
6664    }
6665
6666    int viewportToContentVerticalOffset() {
6667        int offset = getExtendedPaddingTop() - mScrollY;
6668        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6669            offset += getVerticalOffset(false);
6670        }
6671        return offset;
6672    }
6673
6674    @Override
6675    public void debug(int depth) {
6676        super.debug(depth);
6677
6678        String output = debugIndent(depth);
6679        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
6680                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
6681                + "} ";
6682
6683        if (mText != null) {
6684
6685            output += "mText=\"" + mText + "\" ";
6686            if (mLayout != null) {
6687                output += "mLayout width=" + mLayout.getWidth()
6688                        + " height=" + mLayout.getHeight();
6689            }
6690        } else {
6691            output += "mText=NULL";
6692        }
6693        Log.d(VIEW_LOG_TAG, output);
6694    }
6695
6696    /**
6697     * Convenience for {@link Selection#getSelectionStart}.
6698     */
6699    @ViewDebug.ExportedProperty(category = "text")
6700    public int getSelectionStart() {
6701        return Selection.getSelectionStart(getText());
6702    }
6703
6704    /**
6705     * Convenience for {@link Selection#getSelectionEnd}.
6706     */
6707    @ViewDebug.ExportedProperty(category = "text")
6708    public int getSelectionEnd() {
6709        return Selection.getSelectionEnd(getText());
6710    }
6711
6712    /**
6713     * Return true iff there is a selection inside this text view.
6714     */
6715    public boolean hasSelection() {
6716        final int selectionStart = getSelectionStart();
6717        final int selectionEnd = getSelectionEnd();
6718
6719        return selectionStart >= 0 && selectionStart != selectionEnd;
6720    }
6721
6722    /**
6723     * Sets the properties of this field (lines, horizontally scrolling,
6724     * transformation method) to be for a single-line input.
6725     *
6726     * @attr ref android.R.styleable#TextView_singleLine
6727     */
6728    public void setSingleLine() {
6729        setSingleLine(true);
6730    }
6731
6732    /**
6733     * Sets the properties of this field to transform input to ALL CAPS
6734     * display. This may use a "small caps" formatting if available.
6735     * This setting will be ignored if this field is editable or selectable.
6736     *
6737     * This call replaces the current transformation method. Disabling this
6738     * will not necessarily restore the previous behavior from before this
6739     * was enabled.
6740     *
6741     * @see #setTransformationMethod(TransformationMethod)
6742     * @attr ref android.R.styleable#TextView_textAllCaps
6743     */
6744    public void setAllCaps(boolean allCaps) {
6745        if (allCaps) {
6746            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
6747        } else {
6748            setTransformationMethod(null);
6749        }
6750    }
6751
6752    /**
6753     * If true, sets the properties of this field (number of lines, horizontally scrolling,
6754     * transformation method) to be for a single-line input; if false, restores these to the default
6755     * conditions.
6756     *
6757     * Note that the default conditions are not necessarily those that were in effect prior this
6758     * method, and you may want to reset these properties to your custom values.
6759     *
6760     * @attr ref android.R.styleable#TextView_singleLine
6761     */
6762    @android.view.RemotableViewMethod
6763    public void setSingleLine(boolean singleLine) {
6764        // Could be used, but may break backward compatibility.
6765        // if (mSingleLine == singleLine) return;
6766        setInputTypeSingleLine(singleLine);
6767        applySingleLine(singleLine, true, true);
6768    }
6769
6770    /**
6771     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
6772     * @param singleLine
6773     */
6774    private void setInputTypeSingleLine(boolean singleLine) {
6775        if (mEditor != null &&
6776                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6777            if (singleLine) {
6778                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6779            } else {
6780                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6781            }
6782        }
6783    }
6784
6785    private void applySingleLine(boolean singleLine, boolean applyTransformation,
6786            boolean changeMaxLines) {
6787        mSingleLine = singleLine;
6788        if (singleLine) {
6789            setLines(1);
6790            setHorizontallyScrolling(true);
6791            if (applyTransformation) {
6792                setTransformationMethod(SingleLineTransformationMethod.getInstance());
6793            }
6794        } else {
6795            if (changeMaxLines) {
6796                setMaxLines(Integer.MAX_VALUE);
6797            }
6798            setHorizontallyScrolling(false);
6799            if (applyTransformation) {
6800                setTransformationMethod(null);
6801            }
6802        }
6803    }
6804
6805    /**
6806     * Causes words in the text that are longer than the view is wide
6807     * to be ellipsized instead of broken in the middle.  You may also
6808     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
6809     * to constrain the text to a single line.  Use <code>null</code>
6810     * to turn off ellipsizing.
6811     *
6812     * If {@link #setMaxLines} has been used to set two or more lines,
6813     * {@link android.text.TextUtils.TruncateAt#END} and
6814     * {@link android.text.TextUtils.TruncateAt#MARQUEE}* are only supported
6815     * (other ellipsizing types will not do anything).
6816     *
6817     * @attr ref android.R.styleable#TextView_ellipsize
6818     */
6819    public void setEllipsize(TextUtils.TruncateAt where) {
6820        // TruncateAt is an enum. != comparison is ok between these singleton objects.
6821        if (mEllipsize != where) {
6822            mEllipsize = where;
6823
6824            if (mLayout != null) {
6825                nullLayouts();
6826                requestLayout();
6827                invalidate();
6828            }
6829        }
6830    }
6831
6832    /**
6833     * Sets how many times to repeat the marquee animation. Only applied if the
6834     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
6835     *
6836     * @see #getMarqueeRepeatLimit()
6837     *
6838     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
6839     */
6840    public void setMarqueeRepeatLimit(int marqueeLimit) {
6841        mMarqueeRepeatLimit = marqueeLimit;
6842    }
6843
6844    /**
6845     * Gets the number of times the marquee animation is repeated. Only meaningful if the
6846     * TextView has marquee enabled.
6847     *
6848     * @return the number of times the marquee animation is repeated. -1 if the animation
6849     * repeats indefinitely
6850     *
6851     * @see #setMarqueeRepeatLimit(int)
6852     *
6853     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
6854     */
6855    public int getMarqueeRepeatLimit() {
6856        return mMarqueeRepeatLimit;
6857    }
6858
6859    /**
6860     * Returns where, if anywhere, words that are longer than the view
6861     * is wide should be ellipsized.
6862     */
6863    @ViewDebug.ExportedProperty
6864    public TextUtils.TruncateAt getEllipsize() {
6865        return mEllipsize;
6866    }
6867
6868    /**
6869     * Set the TextView so that when it takes focus, all the text is
6870     * selected.
6871     *
6872     * @attr ref android.R.styleable#TextView_selectAllOnFocus
6873     */
6874    @android.view.RemotableViewMethod
6875    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
6876        createEditorIfNeeded();
6877        mEditor.mSelectAllOnFocus = selectAllOnFocus;
6878
6879        if (selectAllOnFocus && !(mText instanceof Spannable)) {
6880            setText(mText, BufferType.SPANNABLE);
6881        }
6882    }
6883
6884    /**
6885     * Set whether the cursor is visible. The default is true. Note that this property only
6886     * makes sense for editable TextView.
6887     *
6888     * @see #isCursorVisible()
6889     *
6890     * @attr ref android.R.styleable#TextView_cursorVisible
6891     */
6892    @android.view.RemotableViewMethod
6893    public void setCursorVisible(boolean visible) {
6894        if (visible && mEditor == null) return; // visible is the default value with no edit data
6895        createEditorIfNeeded();
6896        if (mEditor.mCursorVisible != visible) {
6897            mEditor.mCursorVisible = visible;
6898            invalidate();
6899
6900            mEditor.makeBlink();
6901
6902            // InsertionPointCursorController depends on mCursorVisible
6903            mEditor.prepareCursorControllers();
6904        }
6905    }
6906
6907    /**
6908     * @return whether or not the cursor is visible (assuming this TextView is editable)
6909     *
6910     * @see #setCursorVisible(boolean)
6911     *
6912     * @attr ref android.R.styleable#TextView_cursorVisible
6913     */
6914    public boolean isCursorVisible() {
6915        // true is the default value
6916        return mEditor == null ? true : mEditor.mCursorVisible;
6917    }
6918
6919    private boolean canMarquee() {
6920        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
6921        return width > 0 && (mLayout.getLineWidth(0) > width ||
6922                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
6923                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
6924    }
6925
6926    private void startMarquee() {
6927        // Do not ellipsize EditText
6928        if (getKeyListener() != null) return;
6929
6930        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
6931            return;
6932        }
6933
6934        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
6935                getLineCount() == 1 && canMarquee()) {
6936
6937            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6938                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
6939                final Layout tmp = mLayout;
6940                mLayout = mSavedMarqueeModeLayout;
6941                mSavedMarqueeModeLayout = tmp;
6942                setHorizontalFadingEdgeEnabled(true);
6943                requestLayout();
6944                invalidate();
6945            }
6946
6947            if (mMarquee == null) mMarquee = new Marquee(this);
6948            mMarquee.start(mMarqueeRepeatLimit);
6949        }
6950    }
6951
6952    private void stopMarquee() {
6953        if (mMarquee != null && !mMarquee.isStopped()) {
6954            mMarquee.stop();
6955        }
6956
6957        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
6958            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
6959            final Layout tmp = mSavedMarqueeModeLayout;
6960            mSavedMarqueeModeLayout = mLayout;
6961            mLayout = tmp;
6962            setHorizontalFadingEdgeEnabled(false);
6963            requestLayout();
6964            invalidate();
6965        }
6966    }
6967
6968    private void startStopMarquee(boolean start) {
6969        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6970            if (start) {
6971                startMarquee();
6972            } else {
6973                stopMarquee();
6974            }
6975        }
6976    }
6977
6978    /**
6979     * This method is called when the text is changed, in case any subclasses
6980     * would like to know.
6981     *
6982     * Within <code>text</code>, the <code>lengthAfter</code> characters
6983     * beginning at <code>start</code> have just replaced old text that had
6984     * length <code>lengthBefore</code>. It is an error to attempt to make
6985     * changes to <code>text</code> from this callback.
6986     *
6987     * @param text The text the TextView is displaying
6988     * @param start The offset of the start of the range of the text that was
6989     * modified
6990     * @param lengthBefore The length of the former text that has been replaced
6991     * @param lengthAfter The length of the replacement modified text
6992     */
6993    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
6994        // intentionally empty, template pattern method can be overridden by subclasses
6995    }
6996
6997    /**
6998     * This method is called when the selection has changed, in case any
6999     * subclasses would like to know.
7000     *
7001     * @param selStart The new selection start location.
7002     * @param selEnd The new selection end location.
7003     */
7004    protected void onSelectionChanged(int selStart, int selEnd) {
7005        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
7006    }
7007
7008    /**
7009     * Adds a TextWatcher to the list of those whose methods are called
7010     * whenever this TextView's text changes.
7011     * <p>
7012     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
7013     * not called after {@link #setText} calls.  Now, doing {@link #setText}
7014     * if there are any text changed listeners forces the buffer type to
7015     * Editable if it would not otherwise be and does call this method.
7016     */
7017    public void addTextChangedListener(TextWatcher watcher) {
7018        if (mListeners == null) {
7019            mListeners = new ArrayList<TextWatcher>();
7020        }
7021
7022        mListeners.add(watcher);
7023    }
7024
7025    /**
7026     * Removes the specified TextWatcher from the list of those whose
7027     * methods are called
7028     * whenever this TextView's text changes.
7029     */
7030    public void removeTextChangedListener(TextWatcher watcher) {
7031        if (mListeners != null) {
7032            int i = mListeners.indexOf(watcher);
7033
7034            if (i >= 0) {
7035                mListeners.remove(i);
7036            }
7037        }
7038    }
7039
7040    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
7041        if (mListeners != null) {
7042            final ArrayList<TextWatcher> list = mListeners;
7043            final int count = list.size();
7044            for (int i = 0; i < count; i++) {
7045                list.get(i).beforeTextChanged(text, start, before, after);
7046            }
7047        }
7048
7049        // The spans that are inside or intersect the modified region no longer make sense
7050        removeIntersectingSpans(start, start + before, SpellCheckSpan.class);
7051        removeIntersectingSpans(start, start + before, SuggestionSpan.class);
7052    }
7053
7054    // Removes all spans that are inside or actually overlap the start..end range
7055    private <T> void removeIntersectingSpans(int start, int end, Class<T> type) {
7056        if (!(mText instanceof Editable)) return;
7057        Editable text = (Editable) mText;
7058
7059        T[] spans = text.getSpans(start, end, type);
7060        final int length = spans.length;
7061        for (int i = 0; i < length; i++) {
7062            final int s = text.getSpanStart(spans[i]);
7063            final int e = text.getSpanEnd(spans[i]);
7064            // Spans that are adjacent to the edited region will be handled in
7065            // updateSpellCheckSpans. Result depends on what will be added (space or text)
7066            if (e == start || s == end) break;
7067            text.removeSpan(spans[i]);
7068        }
7069    }
7070
7071    /**
7072     * Not private so it can be called from an inner class without going
7073     * through a thunk.
7074     */
7075    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
7076        if (mListeners != null) {
7077            final ArrayList<TextWatcher> list = mListeners;
7078            final int count = list.size();
7079            for (int i = 0; i < count; i++) {
7080                list.get(i).onTextChanged(text, start, before, after);
7081            }
7082        }
7083
7084        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
7085    }
7086
7087    /**
7088     * Not private so it can be called from an inner class without going
7089     * through a thunk.
7090     */
7091    void sendAfterTextChanged(Editable text) {
7092        if (mListeners != null) {
7093            final ArrayList<TextWatcher> list = mListeners;
7094            final int count = list.size();
7095            for (int i = 0; i < count; i++) {
7096                list.get(i).afterTextChanged(text);
7097            }
7098        }
7099    }
7100
7101    void updateAfterEdit() {
7102        invalidate();
7103        int curs = getSelectionStart();
7104
7105        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7106            registerForPreDraw();
7107        }
7108
7109        if (curs >= 0) {
7110            mHighlightPathBogus = true;
7111            if (mEditor != null) mEditor.makeBlink();
7112            bringPointIntoView(curs);
7113        }
7114
7115        checkForResize();
7116    }
7117
7118    /**
7119     * Not private so it can be called from an inner class without going
7120     * through a thunk.
7121     */
7122    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
7123        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7124        if (ims == null || ims.mBatchEditNesting == 0) {
7125            updateAfterEdit();
7126        }
7127        if (ims != null) {
7128            ims.mContentChanged = true;
7129            if (ims.mChangedStart < 0) {
7130                ims.mChangedStart = start;
7131                ims.mChangedEnd = start+before;
7132            } else {
7133                ims.mChangedStart = Math.min(ims.mChangedStart, start);
7134                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
7135            }
7136            ims.mChangedDelta += after-before;
7137        }
7138
7139        sendOnTextChanged(buffer, start, before, after);
7140        onTextChanged(buffer, start, before, after);
7141    }
7142
7143    /**
7144     * Not private so it can be called from an inner class without going
7145     * through a thunk.
7146     */
7147    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
7148        // XXX Make the start and end move together if this ends up
7149        // spending too much time invalidating.
7150
7151        boolean selChanged = false;
7152        int newSelStart=-1, newSelEnd=-1;
7153
7154        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7155
7156        if (what == Selection.SELECTION_END) {
7157            selChanged = true;
7158            newSelEnd = newStart;
7159
7160            if (oldStart >= 0 || newStart >= 0) {
7161                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
7162                registerForPreDraw();
7163                if (mEditor != null) mEditor.makeBlink();
7164            }
7165        }
7166
7167        if (what == Selection.SELECTION_START) {
7168            selChanged = true;
7169            newSelStart = newStart;
7170
7171            if (oldStart >= 0 || newStart >= 0) {
7172                int end = Selection.getSelectionEnd(buf);
7173                invalidateCursor(end, oldStart, newStart);
7174            }
7175        }
7176
7177        if (selChanged) {
7178            mHighlightPathBogus = true;
7179            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
7180
7181            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
7182                if (newSelStart < 0) {
7183                    newSelStart = Selection.getSelectionStart(buf);
7184                }
7185                if (newSelEnd < 0) {
7186                    newSelEnd = Selection.getSelectionEnd(buf);
7187                }
7188                onSelectionChanged(newSelStart, newSelEnd);
7189            }
7190        }
7191
7192        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
7193                what instanceof CharacterStyle) {
7194            if (ims == null || ims.mBatchEditNesting == 0) {
7195                invalidate();
7196                mHighlightPathBogus = true;
7197                checkForResize();
7198            } else {
7199                ims.mContentChanged = true;
7200            }
7201            if (mEditor != null) {
7202                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
7203                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
7204            }
7205        }
7206
7207        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
7208            mHighlightPathBogus = true;
7209            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
7210                ims.mSelectionModeChanged = true;
7211            }
7212
7213            if (Selection.getSelectionStart(buf) >= 0) {
7214                if (ims == null || ims.mBatchEditNesting == 0) {
7215                    invalidateCursor();
7216                } else {
7217                    ims.mCursorChanged = true;
7218                }
7219            }
7220        }
7221
7222        if (what instanceof ParcelableSpan) {
7223            // If this is a span that can be sent to a remote process,
7224            // the current extract editor would be interested in it.
7225            if (ims != null && ims.mExtractedTextRequest != null) {
7226                if (ims.mBatchEditNesting != 0) {
7227                    if (oldStart >= 0) {
7228                        if (ims.mChangedStart > oldStart) {
7229                            ims.mChangedStart = oldStart;
7230                        }
7231                        if (ims.mChangedStart > oldEnd) {
7232                            ims.mChangedStart = oldEnd;
7233                        }
7234                    }
7235                    if (newStart >= 0) {
7236                        if (ims.mChangedStart > newStart) {
7237                            ims.mChangedStart = newStart;
7238                        }
7239                        if (ims.mChangedStart > newEnd) {
7240                            ims.mChangedStart = newEnd;
7241                        }
7242                    }
7243                } else {
7244                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
7245                            + oldStart + "-" + oldEnd + ","
7246                            + newStart + "-" + newEnd + " " + what);
7247                    ims.mContentChanged = true;
7248                }
7249            }
7250        }
7251
7252        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
7253                what instanceof SpellCheckSpan) {
7254            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
7255        }
7256    }
7257
7258    /**
7259     * @hide
7260     */
7261    @Override
7262    public void dispatchFinishTemporaryDetach() {
7263        mDispatchTemporaryDetach = true;
7264        super.dispatchFinishTemporaryDetach();
7265        mDispatchTemporaryDetach = false;
7266    }
7267
7268    @Override
7269    public void onStartTemporaryDetach() {
7270        super.onStartTemporaryDetach();
7271        // Only track when onStartTemporaryDetach() is called directly,
7272        // usually because this instance is an editable field in a list
7273        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
7274
7275        // Tell the editor that we are temporarily detached. It can use this to preserve
7276        // selection state as needed.
7277        if (mEditor != null) mEditor.mTemporaryDetach = true;
7278    }
7279
7280    @Override
7281    public void onFinishTemporaryDetach() {
7282        super.onFinishTemporaryDetach();
7283        // Only track when onStartTemporaryDetach() is called directly,
7284        // usually because this instance is an editable field in a list
7285        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
7286        if (mEditor != null) mEditor.mTemporaryDetach = false;
7287    }
7288
7289    @Override
7290    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
7291        if (mTemporaryDetach) {
7292            // If we are temporarily in the detach state, then do nothing.
7293            super.onFocusChanged(focused, direction, previouslyFocusedRect);
7294            return;
7295        }
7296
7297        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
7298
7299        if (focused) {
7300            if (mText instanceof Spannable) {
7301                Spannable sp = (Spannable) mText;
7302                MetaKeyKeyListener.resetMetaState(sp);
7303            }
7304        }
7305
7306        startStopMarquee(focused);
7307
7308        if (mTransformation != null) {
7309            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
7310        }
7311
7312        super.onFocusChanged(focused, direction, previouslyFocusedRect);
7313    }
7314
7315    @Override
7316    public void onWindowFocusChanged(boolean hasWindowFocus) {
7317        super.onWindowFocusChanged(hasWindowFocus);
7318
7319        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
7320
7321        startStopMarquee(hasWindowFocus);
7322    }
7323
7324    @Override
7325    protected void onVisibilityChanged(View changedView, int visibility) {
7326        super.onVisibilityChanged(changedView, visibility);
7327        if (mEditor != null && visibility != VISIBLE) {
7328            mEditor.hideControllers();
7329        }
7330    }
7331
7332    /**
7333     * Use {@link BaseInputConnection#removeComposingSpans
7334     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
7335     * state from this text view.
7336     */
7337    public void clearComposingText() {
7338        if (mText instanceof Spannable) {
7339            BaseInputConnection.removeComposingSpans((Spannable)mText);
7340        }
7341    }
7342
7343    @Override
7344    public void setSelected(boolean selected) {
7345        boolean wasSelected = isSelected();
7346
7347        super.setSelected(selected);
7348
7349        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7350            if (selected) {
7351                startMarquee();
7352            } else {
7353                stopMarquee();
7354            }
7355        }
7356    }
7357
7358    @Override
7359    public boolean onTouchEvent(MotionEvent event) {
7360        final int action = event.getActionMasked();
7361
7362        if (mEditor != null) mEditor.onTouchEvent(event);
7363
7364        final boolean superResult = super.onTouchEvent(event);
7365
7366        /*
7367         * Don't handle the release after a long press, because it will
7368         * move the selection away from whatever the menu action was
7369         * trying to affect.
7370         */
7371        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
7372            mEditor.mDiscardNextActionUp = false;
7373            return superResult;
7374        }
7375
7376        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
7377                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
7378
7379         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
7380                && mText instanceof Spannable && mLayout != null) {
7381            boolean handled = false;
7382
7383            if (mMovement != null) {
7384                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
7385            }
7386
7387            final boolean textIsSelectable = isTextSelectable();
7388            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
7389                // The LinkMovementMethod which should handle taps on links has not been installed
7390                // on non editable text that support text selection.
7391                // We reproduce its behavior here to open links for these.
7392                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
7393                        getSelectionEnd(), ClickableSpan.class);
7394
7395                if (links.length > 0) {
7396                    links[0].onClick(this);
7397                    handled = true;
7398                }
7399            }
7400
7401            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
7402                // Show the IME, except when selecting in read-only text.
7403                final InputMethodManager imm = InputMethodManager.peekInstance();
7404                viewClicked(imm);
7405                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
7406                    handled |= imm != null && imm.showSoftInput(this, 0);
7407                }
7408
7409                // The above condition ensures that the mEditor is not null
7410                mEditor.onTouchUpEvent(event);
7411
7412                handled = true;
7413            }
7414
7415            if (handled) {
7416                return true;
7417            }
7418        }
7419
7420        return superResult;
7421    }
7422
7423    @Override
7424    public boolean onGenericMotionEvent(MotionEvent event) {
7425        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7426            try {
7427                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
7428                    return true;
7429                }
7430            } catch (AbstractMethodError ex) {
7431                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
7432                // Ignore its absence in case third party applications implemented the
7433                // interface directly.
7434            }
7435        }
7436        return super.onGenericMotionEvent(event);
7437    }
7438
7439    /**
7440     * @return True iff this TextView contains a text that can be edited, or if this is
7441     * a selectable TextView.
7442     */
7443    boolean isTextEditable() {
7444        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
7445    }
7446
7447    /**
7448     * Returns true, only while processing a touch gesture, if the initial
7449     * touch down event caused focus to move to the text view and as a result
7450     * its selection changed.  Only valid while processing the touch gesture
7451     * of interest, in an editable text view.
7452     */
7453    public boolean didTouchFocusSelect() {
7454        return mEditor != null && mEditor.mTouchFocusSelected;
7455    }
7456
7457    @Override
7458    public void cancelLongPress() {
7459        super.cancelLongPress();
7460        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
7461    }
7462
7463    @Override
7464    public boolean onTrackballEvent(MotionEvent event) {
7465        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7466            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
7467                return true;
7468            }
7469        }
7470
7471        return super.onTrackballEvent(event);
7472    }
7473
7474    public void setScroller(Scroller s) {
7475        mScroller = s;
7476    }
7477
7478    @Override
7479    protected float getLeftFadingEdgeStrength() {
7480        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7481                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7482            if (mMarquee != null && !mMarquee.isStopped()) {
7483                final Marquee marquee = mMarquee;
7484                if (marquee.shouldDrawLeftFade()) {
7485                    final float scroll = marquee.getScroll();
7486                    return scroll / getHorizontalFadingEdgeLength();
7487                } else {
7488                    return 0.0f;
7489                }
7490            } else if (getLineCount() == 1) {
7491                final int layoutDirection = getResolvedLayoutDirection();
7492                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7493                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7494                    case Gravity.LEFT:
7495                        return 0.0f;
7496                    case Gravity.RIGHT:
7497                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
7498                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
7499                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
7500                    case Gravity.CENTER_HORIZONTAL:
7501                        return 0.0f;
7502                }
7503            }
7504        }
7505        return super.getLeftFadingEdgeStrength();
7506    }
7507
7508    @Override
7509    protected float getRightFadingEdgeStrength() {
7510        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7511                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7512            if (mMarquee != null && !mMarquee.isStopped()) {
7513                final Marquee marquee = mMarquee;
7514                final float maxFadeScroll = marquee.getMaxFadeScroll();
7515                final float scroll = marquee.getScroll();
7516                return (maxFadeScroll - scroll) / getHorizontalFadingEdgeLength();
7517            } else if (getLineCount() == 1) {
7518                final int layoutDirection = getResolvedLayoutDirection();
7519                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7520                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7521                    case Gravity.LEFT:
7522                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
7523                                getCompoundPaddingRight();
7524                        final float lineWidth = mLayout.getLineWidth(0);
7525                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
7526                    case Gravity.RIGHT:
7527                        return 0.0f;
7528                    case Gravity.CENTER_HORIZONTAL:
7529                    case Gravity.FILL_HORIZONTAL:
7530                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
7531                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
7532                                getHorizontalFadingEdgeLength();
7533                }
7534            }
7535        }
7536        return super.getRightFadingEdgeStrength();
7537    }
7538
7539    @Override
7540    protected int computeHorizontalScrollRange() {
7541        if (mLayout != null) {
7542            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
7543                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
7544        }
7545
7546        return super.computeHorizontalScrollRange();
7547    }
7548
7549    @Override
7550    protected int computeVerticalScrollRange() {
7551        if (mLayout != null)
7552            return mLayout.getHeight();
7553
7554        return super.computeVerticalScrollRange();
7555    }
7556
7557    @Override
7558    protected int computeVerticalScrollExtent() {
7559        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
7560    }
7561
7562    @Override
7563    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
7564        super.findViewsWithText(outViews, searched, flags);
7565        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
7566                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
7567            String searchedLowerCase = searched.toString().toLowerCase();
7568            String textLowerCase = mText.toString().toLowerCase();
7569            if (textLowerCase.contains(searchedLowerCase)) {
7570                outViews.add(this);
7571            }
7572        }
7573    }
7574
7575    public enum BufferType {
7576        NORMAL, SPANNABLE, EDITABLE,
7577    }
7578
7579    /**
7580     * Returns the TextView_textColor attribute from the
7581     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
7582     * from the TextView_textAppearance attribute, if TextView_textColor
7583     * was not set directly.
7584     */
7585    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
7586        ColorStateList colors;
7587        colors = attrs.getColorStateList(com.android.internal.R.styleable.
7588                                         TextView_textColor);
7589
7590        if (colors == null) {
7591            int ap = attrs.getResourceId(com.android.internal.R.styleable.
7592                                         TextView_textAppearance, -1);
7593            if (ap != -1) {
7594                TypedArray appearance;
7595                appearance = context.obtainStyledAttributes(ap,
7596                                            com.android.internal.R.styleable.TextAppearance);
7597                colors = appearance.getColorStateList(com.android.internal.R.styleable.
7598                                                  TextAppearance_textColor);
7599                appearance.recycle();
7600            }
7601        }
7602
7603        return colors;
7604    }
7605
7606    /**
7607     * Returns the default color from the TextView_textColor attribute
7608     * from the AttributeSet, if set, or the default color from the
7609     * TextAppearance_textColor from the TextView_textAppearance attribute,
7610     * if TextView_textColor was not set directly.
7611     */
7612    public static int getTextColor(Context context,
7613                                   TypedArray attrs,
7614                                   int def) {
7615        ColorStateList colors = getTextColors(context, attrs);
7616
7617        if (colors == null) {
7618            return def;
7619        } else {
7620            return colors.getDefaultColor();
7621        }
7622    }
7623
7624    @Override
7625    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
7626        final int filteredMetaState = event.getMetaState() & ~KeyEvent.META_CTRL_MASK;
7627        if (KeyEvent.metaStateHasNoModifiers(filteredMetaState)) {
7628            switch (keyCode) {
7629            case KeyEvent.KEYCODE_A:
7630                if (canSelectText()) {
7631                    return onTextContextMenuItem(ID_SELECT_ALL);
7632                }
7633                break;
7634            case KeyEvent.KEYCODE_X:
7635                if (canCut()) {
7636                    return onTextContextMenuItem(ID_CUT);
7637                }
7638                break;
7639            case KeyEvent.KEYCODE_C:
7640                if (canCopy()) {
7641                    return onTextContextMenuItem(ID_COPY);
7642                }
7643                break;
7644            case KeyEvent.KEYCODE_V:
7645                if (canPaste()) {
7646                    return onTextContextMenuItem(ID_PASTE);
7647                }
7648                break;
7649            }
7650        }
7651        return super.onKeyShortcut(keyCode, event);
7652    }
7653
7654    /**
7655     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
7656     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
7657     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
7658     * sufficient.
7659     */
7660    private boolean canSelectText() {
7661        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
7662    }
7663
7664    /**
7665     * Test based on the <i>intrinsic</i> charateristics of the TextView.
7666     * The text must be spannable and the movement method must allow for arbitary selection.
7667     *
7668     * See also {@link #canSelectText()}.
7669     */
7670    boolean textCanBeSelected() {
7671        // prepareCursorController() relies on this method.
7672        // If you change this condition, make sure prepareCursorController is called anywhere
7673        // the value of this condition might be changed.
7674        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
7675        return isTextEditable() ||
7676                (isTextSelectable() && mText instanceof Spannable && isEnabled());
7677    }
7678
7679    /**
7680     * This is a temporary method. Future versions may support multi-locale text.
7681     *
7682     * @return The locale that should be used for a word iterator and a spell checker
7683     * in this TextView, based on the current spell checker settings,
7684     * the current IME's locale, or the system default locale.
7685     * @hide
7686     */
7687    public Locale getTextServicesLocale() {
7688        Locale locale = Locale.getDefault();
7689        final TextServicesManager textServicesManager = (TextServicesManager)
7690                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
7691        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
7692        if (subtype != null) {
7693            locale = SpellCheckerSubtype.constructLocaleFromString(subtype.getLocale());
7694        }
7695        return locale;
7696    }
7697
7698    void onLocaleChanged() {
7699        // Will be re-created on demand in getWordIterator with the proper new locale
7700        mEditor.mWordIterator = null;
7701    }
7702
7703    /**
7704     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
7705     * Made available to achieve a consistent behavior.
7706     * @hide
7707     */
7708    public WordIterator getWordIterator() {
7709        if (mEditor != null) {
7710            return mEditor.getWordIterator();
7711        } else {
7712            return null;
7713        }
7714    }
7715
7716    @Override
7717    public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
7718        super.onPopulateAccessibilityEvent(event);
7719
7720        final boolean isPassword = hasPasswordTransformationMethod();
7721        if (!isPassword || shouldSpeakPasswordsForAccessibility()) {
7722            final CharSequence text = getTextForAccessibility();
7723            if (!TextUtils.isEmpty(text)) {
7724                event.getText().add(text);
7725            }
7726        }
7727    }
7728
7729    /**
7730     * @return true if the user has explicitly allowed accessibility services
7731     * to speak passwords.
7732     */
7733    private boolean shouldSpeakPasswordsForAccessibility() {
7734        return (Settings.Secure.getInt(mContext.getContentResolver(),
7735                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0) == 1);
7736    }
7737
7738    @Override
7739    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
7740        super.onInitializeAccessibilityEvent(event);
7741
7742        event.setClassName(TextView.class.getName());
7743        final boolean isPassword = hasPasswordTransformationMethod();
7744        event.setPassword(isPassword);
7745
7746        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
7747            event.setFromIndex(Selection.getSelectionStart(mText));
7748            event.setToIndex(Selection.getSelectionEnd(mText));
7749            event.setItemCount(mText.length());
7750        }
7751    }
7752
7753    @Override
7754    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
7755        super.onInitializeAccessibilityNodeInfo(info);
7756
7757        info.setClassName(TextView.class.getName());
7758        final boolean isPassword = hasPasswordTransformationMethod();
7759        info.setPassword(isPassword);
7760
7761        if (!isPassword) {
7762            info.setText(getTextForAccessibility());
7763        }
7764
7765        if (TextUtils.isEmpty(getContentDescription()) && !TextUtils.isEmpty(mText)) {
7766            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
7767            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
7768            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
7769                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
7770                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
7771                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
7772                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
7773        }
7774    }
7775
7776    @Override
7777    public void sendAccessibilityEvent(int eventType) {
7778        // Do not send scroll events since first they are not interesting for
7779        // accessibility and second such events a generated too frequently.
7780        // For details see the implementation of bringTextIntoView().
7781        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
7782            return;
7783        }
7784        super.sendAccessibilityEvent(eventType);
7785    }
7786
7787    /**
7788     * Gets the text reported for accessibility purposes.
7789     *
7790     * @return The accessibility text.
7791     *
7792     * @hide
7793     */
7794    public CharSequence getTextForAccessibility() {
7795        CharSequence text = getText();
7796        if (TextUtils.isEmpty(text)) {
7797            text = getHint();
7798        }
7799        return text;
7800    }
7801
7802    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
7803            int fromIndex, int removedCount, int addedCount) {
7804        AccessibilityEvent event =
7805            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
7806        event.setFromIndex(fromIndex);
7807        event.setRemovedCount(removedCount);
7808        event.setAddedCount(addedCount);
7809        event.setBeforeText(beforeText);
7810        sendAccessibilityEventUnchecked(event);
7811    }
7812
7813    /**
7814     * Returns whether this text view is a current input method target.  The
7815     * default implementation just checks with {@link InputMethodManager}.
7816     */
7817    public boolean isInputMethodTarget() {
7818        InputMethodManager imm = InputMethodManager.peekInstance();
7819        return imm != null && imm.isActive(this);
7820    }
7821
7822    static final int ID_SELECT_ALL = android.R.id.selectAll;
7823    static final int ID_CUT = android.R.id.cut;
7824    static final int ID_COPY = android.R.id.copy;
7825    static final int ID_PASTE = android.R.id.paste;
7826
7827    /**
7828     * Called when a context menu option for the text view is selected.  Currently
7829     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
7830     * {@link android.R.id#copy} or {@link android.R.id#paste}.
7831     *
7832     * @return true if the context menu item action was performed.
7833     */
7834    public boolean onTextContextMenuItem(int id) {
7835        int min = 0;
7836        int max = mText.length();
7837
7838        if (isFocused()) {
7839            final int selStart = getSelectionStart();
7840            final int selEnd = getSelectionEnd();
7841
7842            min = Math.max(0, Math.min(selStart, selEnd));
7843            max = Math.max(0, Math.max(selStart, selEnd));
7844        }
7845
7846        switch (id) {
7847            case ID_SELECT_ALL:
7848                // This does not enter text selection mode. Text is highlighted, so that it can be
7849                // bulk edited, like selectAllOnFocus does. Returns true even if text is empty.
7850                selectAllText();
7851                return true;
7852
7853            case ID_PASTE:
7854                paste(min, max);
7855                return true;
7856
7857            case ID_CUT:
7858                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
7859                deleteText_internal(min, max);
7860                stopSelectionActionMode();
7861                return true;
7862
7863            case ID_COPY:
7864                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
7865                stopSelectionActionMode();
7866                return true;
7867        }
7868        return false;
7869    }
7870
7871    CharSequence getTransformedText(int start, int end) {
7872        return removeSuggestionSpans(mTransformed.subSequence(start, end));
7873    }
7874
7875    @Override
7876    public boolean performLongClick() {
7877        boolean handled = false;
7878
7879        if (super.performLongClick()) {
7880            handled = true;
7881        }
7882
7883        if (mEditor != null) {
7884            handled |= mEditor.performLongClick(handled);
7885        }
7886
7887        if (handled) {
7888            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
7889            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
7890        }
7891
7892        return handled;
7893    }
7894
7895    @Override
7896    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
7897        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
7898        if (mEditor != null) {
7899            mEditor.onScrollChanged();
7900        }
7901    }
7902
7903    /**
7904     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
7905     * by the IME or by the spell checker as the user types. This is done by adding
7906     * {@link SuggestionSpan}s to the text.
7907     *
7908     * When suggestions are enabled (default), this list of suggestions will be displayed when the
7909     * user asks for them on these parts of the text. This value depends on the inputType of this
7910     * TextView.
7911     *
7912     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
7913     *
7914     * In addition, the type variation must be one of
7915     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
7916     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
7917     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
7918     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
7919     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
7920     *
7921     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
7922     *
7923     * @return true if the suggestions popup window is enabled, based on the inputType.
7924     */
7925    public boolean isSuggestionsEnabled() {
7926        if (mEditor == null) return false;
7927        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
7928            return false;
7929        }
7930        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
7931
7932        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
7933        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
7934                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
7935                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
7936                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
7937                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
7938    }
7939
7940    /**
7941     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
7942     * selection is initiated in this View.
7943     *
7944     * The standard implementation populates the menu with a subset of Select All, Cut, Copy and
7945     * Paste actions, depending on what this View supports.
7946     *
7947     * A custom implementation can add new entries in the default menu in its
7948     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The
7949     * default actions can also be removed from the menu using {@link Menu#removeItem(int)} and
7950     * passing {@link android.R.id#selectAll}, {@link android.R.id#cut}, {@link android.R.id#copy}
7951     * or {@link android.R.id#paste} ids as parameters.
7952     *
7953     * Returning false from
7954     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will prevent
7955     * the action mode from being started.
7956     *
7957     * Action click events should be handled by the custom implementation of
7958     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
7959     *
7960     * Note that text selection mode is not started when a TextView receives focus and the
7961     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
7962     * that case, to allow for quick replacement.
7963     */
7964    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
7965        createEditorIfNeeded();
7966        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
7967    }
7968
7969    /**
7970     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
7971     *
7972     * @return The current custom selection callback.
7973     */
7974    public ActionMode.Callback getCustomSelectionActionModeCallback() {
7975        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
7976    }
7977
7978    /**
7979     * @hide
7980     */
7981    protected void stopSelectionActionMode() {
7982        mEditor.stopSelectionActionMode();
7983    }
7984
7985    boolean canCut() {
7986        if (hasPasswordTransformationMethod()) {
7987            return false;
7988        }
7989
7990        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
7991                mEditor.mKeyListener != null) {
7992            return true;
7993        }
7994
7995        return false;
7996    }
7997
7998    boolean canCopy() {
7999        if (hasPasswordTransformationMethod()) {
8000            return false;
8001        }
8002
8003        if (mText.length() > 0 && hasSelection()) {
8004            return true;
8005        }
8006
8007        return false;
8008    }
8009
8010    boolean canPaste() {
8011        return (mText instanceof Editable &&
8012                mEditor != null && mEditor.mKeyListener != null &&
8013                getSelectionStart() >= 0 &&
8014                getSelectionEnd() >= 0 &&
8015                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
8016                hasPrimaryClip());
8017    }
8018
8019    boolean selectAllText() {
8020        final int length = mText.length();
8021        Selection.setSelection((Spannable) mText, 0, length);
8022        return length > 0;
8023    }
8024
8025    /**
8026     * Prepare text so that there are not zero or two spaces at beginning and end of region defined
8027     * by [min, max] when replacing this region by paste.
8028     * Note that if there were two spaces (or more) at that position before, they are kept. We just
8029     * make sure we do not add an extra one from the paste content.
8030     */
8031    long prepareSpacesAroundPaste(int min, int max, CharSequence paste) {
8032        if (paste.length() > 0) {
8033            if (min > 0) {
8034                final char charBefore = mTransformed.charAt(min - 1);
8035                final char charAfter = paste.charAt(0);
8036
8037                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8038                    // Two spaces at beginning of paste: remove one
8039                    final int originalLength = mText.length();
8040                    deleteText_internal(min - 1, min);
8041                    // Due to filters, there is no guarantee that exactly one character was
8042                    // removed: count instead.
8043                    final int delta = mText.length() - originalLength;
8044                    min += delta;
8045                    max += delta;
8046                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8047                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8048                    // No space at beginning of paste: add one
8049                    final int originalLength = mText.length();
8050                    replaceText_internal(min, min, " ");
8051                    // Taking possible filters into account as above.
8052                    final int delta = mText.length() - originalLength;
8053                    min += delta;
8054                    max += delta;
8055                }
8056            }
8057
8058            if (max < mText.length()) {
8059                final char charBefore = paste.charAt(paste.length() - 1);
8060                final char charAfter = mTransformed.charAt(max);
8061
8062                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8063                    // Two spaces at end of paste: remove one
8064                    deleteText_internal(max, max + 1);
8065                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8066                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8067                    // No space at end of paste: add one
8068                    replaceText_internal(max, max, " ");
8069                }
8070            }
8071        }
8072
8073        return TextUtils.packRangeInLong(min, max);
8074    }
8075
8076    /**
8077     * Paste clipboard content between min and max positions.
8078     */
8079    private void paste(int min, int max) {
8080        ClipboardManager clipboard =
8081            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
8082        ClipData clip = clipboard.getPrimaryClip();
8083        if (clip != null) {
8084            boolean didFirst = false;
8085            for (int i=0; i<clip.getItemCount(); i++) {
8086                CharSequence paste = clip.getItemAt(i).coerceToStyledText(getContext());
8087                if (paste != null) {
8088                    if (!didFirst) {
8089                        long minMax = prepareSpacesAroundPaste(min, max, paste);
8090                        min = TextUtils.unpackRangeStartFromLong(minMax);
8091                        max = TextUtils.unpackRangeEndFromLong(minMax);
8092                        Selection.setSelection((Spannable) mText, max);
8093                        ((Editable) mText).replace(min, max, paste);
8094                        didFirst = true;
8095                    } else {
8096                        ((Editable) mText).insert(getSelectionEnd(), "\n");
8097                        ((Editable) mText).insert(getSelectionEnd(), paste);
8098                    }
8099                }
8100            }
8101            stopSelectionActionMode();
8102            LAST_CUT_OR_COPY_TIME = 0;
8103        }
8104    }
8105
8106    private void setPrimaryClip(ClipData clip) {
8107        ClipboardManager clipboard = (ClipboardManager) getContext().
8108                getSystemService(Context.CLIPBOARD_SERVICE);
8109        clipboard.setPrimaryClip(clip);
8110        LAST_CUT_OR_COPY_TIME = SystemClock.uptimeMillis();
8111    }
8112
8113    /**
8114     * Get the character offset closest to the specified absolute position. A typical use case is to
8115     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
8116     *
8117     * @param x The horizontal absolute position of a point on screen
8118     * @param y The vertical absolute position of a point on screen
8119     * @return the character offset for the character whose position is closest to the specified
8120     *  position. Returns -1 if there is no layout.
8121     */
8122    public int getOffsetForPosition(float x, float y) {
8123        if (getLayout() == null) return -1;
8124        final int line = getLineAtCoordinate(y);
8125        final int offset = getOffsetAtCoordinate(line, x);
8126        return offset;
8127    }
8128
8129    float convertToLocalHorizontalCoordinate(float x) {
8130        x -= getTotalPaddingLeft();
8131        // Clamp the position to inside of the view.
8132        x = Math.max(0.0f, x);
8133        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
8134        x += getScrollX();
8135        return x;
8136    }
8137
8138    int getLineAtCoordinate(float y) {
8139        y -= getTotalPaddingTop();
8140        // Clamp the position to inside of the view.
8141        y = Math.max(0.0f, y);
8142        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
8143        y += getScrollY();
8144        return getLayout().getLineForVertical((int) y);
8145    }
8146
8147    private int getOffsetAtCoordinate(int line, float x) {
8148        x = convertToLocalHorizontalCoordinate(x);
8149        return getLayout().getOffsetForHorizontal(line, x);
8150    }
8151
8152    @Override
8153    public boolean onDragEvent(DragEvent event) {
8154        switch (event.getAction()) {
8155            case DragEvent.ACTION_DRAG_STARTED:
8156                return mEditor != null && mEditor.hasInsertionController();
8157
8158            case DragEvent.ACTION_DRAG_ENTERED:
8159                TextView.this.requestFocus();
8160                return true;
8161
8162            case DragEvent.ACTION_DRAG_LOCATION:
8163                final int offset = getOffsetForPosition(event.getX(), event.getY());
8164                Selection.setSelection((Spannable)mText, offset);
8165                return true;
8166
8167            case DragEvent.ACTION_DROP:
8168                if (mEditor != null) mEditor.onDrop(event);
8169                return true;
8170
8171            case DragEvent.ACTION_DRAG_ENDED:
8172            case DragEvent.ACTION_DRAG_EXITED:
8173            default:
8174                return true;
8175        }
8176    }
8177
8178    boolean isInBatchEditMode() {
8179        if (mEditor == null) return false;
8180        final Editor.InputMethodState ims = mEditor.mInputMethodState;
8181        if (ims != null) {
8182            return ims.mBatchEditNesting > 0;
8183        }
8184        return mEditor.mInBatchEditControllers;
8185    }
8186
8187    @Override
8188    public void onResolvedTextDirectionChanged() {
8189        if (hasPasswordTransformationMethod()) {
8190            // TODO: take care of the content direction to show the password text and dots justified
8191            // to the left or to the right
8192            mTextDir = TextDirectionHeuristics.LOCALE;
8193            return;
8194        }
8195
8196        // Always need to resolve layout direction first
8197        final boolean defaultIsRtl = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL);
8198
8199        // Now, we can select the heuristic
8200        int textDir = getResolvedTextDirection();
8201        switch (textDir) {
8202            default:
8203            case TEXT_DIRECTION_FIRST_STRONG:
8204                mTextDir = (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
8205                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
8206                break;
8207            case TEXT_DIRECTION_ANY_RTL:
8208                mTextDir = TextDirectionHeuristics.ANYRTL_LTR;
8209                break;
8210            case TEXT_DIRECTION_LTR:
8211                mTextDir = TextDirectionHeuristics.LTR;
8212                break;
8213            case TEXT_DIRECTION_RTL:
8214                mTextDir = TextDirectionHeuristics.RTL;
8215                break;
8216            case TEXT_DIRECTION_LOCALE:
8217                mTextDir = TextDirectionHeuristics.LOCALE;
8218                break;
8219        }
8220    }
8221
8222    @Override
8223    public void onResolveDrawables(int layoutDirection) {
8224        // No need to resolve twice
8225        if (mResolvedDrawables) {
8226            return;
8227        }
8228        // No drawable to resolve
8229        if (mDrawables == null) {
8230            return;
8231        }
8232        // No relative drawable to resolve
8233        if (mDrawables.mDrawableStart == null && mDrawables.mDrawableEnd == null) {
8234            mResolvedDrawables = true;
8235            return;
8236        }
8237
8238        Drawables dr = mDrawables;
8239        switch(layoutDirection) {
8240            case LAYOUT_DIRECTION_RTL:
8241                if (dr.mDrawableStart != null) {
8242                    dr.mDrawableRight = dr.mDrawableStart;
8243
8244                    dr.mDrawableSizeRight = dr.mDrawableSizeStart;
8245                    dr.mDrawableHeightRight = dr.mDrawableHeightStart;
8246                }
8247                if (dr.mDrawableEnd != null) {
8248                    dr.mDrawableLeft = dr.mDrawableEnd;
8249
8250                    dr.mDrawableSizeLeft = dr.mDrawableSizeEnd;
8251                    dr.mDrawableHeightLeft = dr.mDrawableHeightEnd;
8252                }
8253                break;
8254
8255            case LAYOUT_DIRECTION_LTR:
8256            default:
8257                if (dr.mDrawableStart != null) {
8258                    dr.mDrawableLeft = dr.mDrawableStart;
8259
8260                    dr.mDrawableSizeLeft = dr.mDrawableSizeStart;
8261                    dr.mDrawableHeightLeft = dr.mDrawableHeightStart;
8262                }
8263                if (dr.mDrawableEnd != null) {
8264                    dr.mDrawableRight = dr.mDrawableEnd;
8265
8266                    dr.mDrawableSizeRight = dr.mDrawableSizeEnd;
8267                    dr.mDrawableHeightRight = dr.mDrawableHeightEnd;
8268                }
8269                break;
8270        }
8271        updateDrawablesLayoutDirection(dr, layoutDirection);
8272        mResolvedDrawables = true;
8273    }
8274
8275    private void updateDrawablesLayoutDirection(Drawables dr, int layoutDirection) {
8276        if (dr.mDrawableLeft != null) {
8277            dr.mDrawableLeft.setLayoutDirection(layoutDirection);
8278        }
8279        if (dr.mDrawableRight != null) {
8280            dr.mDrawableRight.setLayoutDirection(layoutDirection);
8281        }
8282        if (dr.mDrawableTop != null) {
8283            dr.mDrawableTop.setLayoutDirection(layoutDirection);
8284        }
8285        if (dr.mDrawableBottom != null) {
8286            dr.mDrawableBottom.setLayoutDirection(layoutDirection);
8287        }
8288    }
8289
8290    protected void resetResolvedDrawables() {
8291        mResolvedDrawables = false;
8292    }
8293
8294    /**
8295     * @hide
8296     */
8297    protected void viewClicked(InputMethodManager imm) {
8298        if (imm != null) {
8299            imm.viewClicked(this);
8300        }
8301    }
8302
8303    /**
8304     * Deletes the range of text [start, end[.
8305     * @hide
8306     */
8307    protected void deleteText_internal(int start, int end) {
8308        ((Editable) mText).delete(start, end);
8309    }
8310
8311    /**
8312     * Replaces the range of text [start, end[ by replacement text
8313     * @hide
8314     */
8315    protected void replaceText_internal(int start, int end, CharSequence text) {
8316        ((Editable) mText).replace(start, end, text);
8317    }
8318
8319    /**
8320     * Sets a span on the specified range of text
8321     * @hide
8322     */
8323    protected void setSpan_internal(Object span, int start, int end, int flags) {
8324        ((Editable) mText).setSpan(span, start, end, flags);
8325    }
8326
8327    /**
8328     * Moves the cursor to the specified offset position in text
8329     * @hide
8330     */
8331    protected void setCursorPosition_internal(int start, int end) {
8332        Selection.setSelection(((Editable) mText), start, end);
8333    }
8334
8335    /**
8336     * An Editor should be created as soon as any of the editable-specific fields (grouped
8337     * inside the Editor object) is assigned to a non-default value.
8338     * This method will create the Editor if needed.
8339     *
8340     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
8341     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
8342     * Editor for backward compatibility, as soon as one of these fields is assigned.
8343     *
8344     * Also note that for performance reasons, the mEditor is created when needed, but not
8345     * reset when no more edit-specific fields are needed.
8346     */
8347    private void createEditorIfNeeded() {
8348        if (mEditor == null) {
8349            mEditor = new Editor(this);
8350        }
8351    }
8352
8353    /**
8354     * @hide
8355     */
8356    @Override
8357    public CharSequence getIterableTextForAccessibility() {
8358        if (getContentDescription() == null) {
8359            if (!(mText instanceof Spannable)) {
8360                setText(mText, BufferType.SPANNABLE);
8361            }
8362            return mText;
8363        }
8364        return super.getIterableTextForAccessibility();
8365    }
8366
8367    /**
8368     * @hide
8369     */
8370    @Override
8371    public TextSegmentIterator getIteratorForGranularity(int granularity) {
8372        switch (granularity) {
8373            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
8374                Spannable text = (Spannable) getIterableTextForAccessibility();
8375                if (!TextUtils.isEmpty(text) && getLayout() != null) {
8376                    AccessibilityIterators.LineTextSegmentIterator iterator =
8377                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
8378                    iterator.initialize(text, getLayout());
8379                    return iterator;
8380                }
8381            } break;
8382            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
8383                Spannable text = (Spannable) getIterableTextForAccessibility();
8384                if (!TextUtils.isEmpty(text) && getLayout() != null) {
8385                    AccessibilityIterators.PageTextSegmentIterator iterator =
8386                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
8387                    iterator.initialize(this);
8388                    return iterator;
8389                }
8390            } break;
8391        }
8392        return super.getIteratorForGranularity(granularity);
8393    }
8394
8395    /**
8396     * @hide
8397     */
8398    @Override
8399    public int getAccessibilityCursorPosition() {
8400        if (TextUtils.isEmpty(getContentDescription())) {
8401            final int selectionEnd = getSelectionEnd();
8402            if (selectionEnd >= 0) {
8403                return selectionEnd;
8404            }
8405        }
8406        return super.getAccessibilityCursorPosition();
8407    }
8408
8409    /**
8410     * @hide
8411     */
8412    @Override
8413    public void setAccessibilityCursorPosition(int index) {
8414        if (getAccessibilityCursorPosition() == index) {
8415            return;
8416        }
8417        if (TextUtils.isEmpty(getContentDescription())) {
8418            if (index >= 0 && index <= mText.length()) {
8419                Selection.setSelection((Spannable) mText, index);
8420            } else {
8421                Selection.removeSelection((Spannable) mText);
8422            }
8423        } else {
8424            super.setAccessibilityCursorPosition(index);
8425        }
8426    }
8427
8428    /**
8429     * User interface state that is stored by TextView for implementing
8430     * {@link View#onSaveInstanceState}.
8431     */
8432    public static class SavedState extends BaseSavedState {
8433        int selStart;
8434        int selEnd;
8435        CharSequence text;
8436        boolean frozenWithFocus;
8437        CharSequence error;
8438
8439        SavedState(Parcelable superState) {
8440            super(superState);
8441        }
8442
8443        @Override
8444        public void writeToParcel(Parcel out, int flags) {
8445            super.writeToParcel(out, flags);
8446            out.writeInt(selStart);
8447            out.writeInt(selEnd);
8448            out.writeInt(frozenWithFocus ? 1 : 0);
8449            TextUtils.writeToParcel(text, out, flags);
8450
8451            if (error == null) {
8452                out.writeInt(0);
8453            } else {
8454                out.writeInt(1);
8455                TextUtils.writeToParcel(error, out, flags);
8456            }
8457        }
8458
8459        @Override
8460        public String toString() {
8461            String str = "TextView.SavedState{"
8462                    + Integer.toHexString(System.identityHashCode(this))
8463                    + " start=" + selStart + " end=" + selEnd;
8464            if (text != null) {
8465                str += " text=" + text;
8466            }
8467            return str + "}";
8468        }
8469
8470        @SuppressWarnings("hiding")
8471        public static final Parcelable.Creator<SavedState> CREATOR
8472                = new Parcelable.Creator<SavedState>() {
8473            public SavedState createFromParcel(Parcel in) {
8474                return new SavedState(in);
8475            }
8476
8477            public SavedState[] newArray(int size) {
8478                return new SavedState[size];
8479            }
8480        };
8481
8482        private SavedState(Parcel in) {
8483            super(in);
8484            selStart = in.readInt();
8485            selEnd = in.readInt();
8486            frozenWithFocus = (in.readInt() != 0);
8487            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8488
8489            if (in.readInt() != 0) {
8490                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8491            }
8492        }
8493    }
8494
8495    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
8496        private char[] mChars;
8497        private int mStart, mLength;
8498
8499        public CharWrapper(char[] chars, int start, int len) {
8500            mChars = chars;
8501            mStart = start;
8502            mLength = len;
8503        }
8504
8505        /* package */ void set(char[] chars, int start, int len) {
8506            mChars = chars;
8507            mStart = start;
8508            mLength = len;
8509        }
8510
8511        public int length() {
8512            return mLength;
8513        }
8514
8515        public char charAt(int off) {
8516            return mChars[off + mStart];
8517        }
8518
8519        @Override
8520        public String toString() {
8521            return new String(mChars, mStart, mLength);
8522        }
8523
8524        public CharSequence subSequence(int start, int end) {
8525            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8526                throw new IndexOutOfBoundsException(start + ", " + end);
8527            }
8528
8529            return new String(mChars, start + mStart, end - start);
8530        }
8531
8532        public void getChars(int start, int end, char[] buf, int off) {
8533            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8534                throw new IndexOutOfBoundsException(start + ", " + end);
8535            }
8536
8537            System.arraycopy(mChars, start + mStart, buf, off, end - start);
8538        }
8539
8540        public void drawText(Canvas c, int start, int end,
8541                             float x, float y, Paint p) {
8542            c.drawText(mChars, start + mStart, end - start, x, y, p);
8543        }
8544
8545        public void drawTextRun(Canvas c, int start, int end,
8546                int contextStart, int contextEnd, float x, float y, int flags, Paint p) {
8547            int count = end - start;
8548            int contextCount = contextEnd - contextStart;
8549            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
8550                    contextCount, x, y, flags, p);
8551        }
8552
8553        public float measureText(int start, int end, Paint p) {
8554            return p.measureText(mChars, start + mStart, end - start);
8555        }
8556
8557        public int getTextWidths(int start, int end, float[] widths, Paint p) {
8558            return p.getTextWidths(mChars, start + mStart, end - start, widths);
8559        }
8560
8561        public float getTextRunAdvances(int start, int end, int contextStart,
8562                int contextEnd, int flags, float[] advances, int advancesIndex,
8563                Paint p) {
8564            int count = end - start;
8565            int contextCount = contextEnd - contextStart;
8566            return p.getTextRunAdvances(mChars, start + mStart, count,
8567                    contextStart + mStart, contextCount, flags, advances,
8568                    advancesIndex);
8569        }
8570
8571        public float getTextRunAdvances(int start, int end, int contextStart,
8572                int contextEnd, int flags, float[] advances, int advancesIndex,
8573                Paint p, int reserved) {
8574            int count = end - start;
8575            int contextCount = contextEnd - contextStart;
8576            return p.getTextRunAdvances(mChars, start + mStart, count,
8577                    contextStart + mStart, contextCount, flags, advances,
8578                    advancesIndex, reserved);
8579        }
8580
8581        public int getTextRunCursor(int contextStart, int contextEnd, int flags,
8582                int offset, int cursorOpt, Paint p) {
8583            int contextCount = contextEnd - contextStart;
8584            return p.getTextRunCursor(mChars, contextStart + mStart,
8585                    contextCount, flags, offset + mStart, cursorOpt);
8586        }
8587    }
8588
8589    private static final class Marquee extends Handler {
8590        // TODO: Add an option to configure this
8591        private static final float MARQUEE_DELTA_MAX = 0.07f;
8592        private static final int MARQUEE_DELAY = 1200;
8593        private static final int MARQUEE_RESTART_DELAY = 1200;
8594        private static final int MARQUEE_RESOLUTION = 1000 / 30;
8595        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
8596
8597        private static final byte MARQUEE_STOPPED = 0x0;
8598        private static final byte MARQUEE_STARTING = 0x1;
8599        private static final byte MARQUEE_RUNNING = 0x2;
8600
8601        private static final int MESSAGE_START = 0x1;
8602        private static final int MESSAGE_TICK = 0x2;
8603        private static final int MESSAGE_RESTART = 0x3;
8604
8605        private final WeakReference<TextView> mView;
8606
8607        private byte mStatus = MARQUEE_STOPPED;
8608        private final float mScrollUnit;
8609        private float mMaxScroll;
8610        private float mMaxFadeScroll;
8611        private float mGhostStart;
8612        private float mGhostOffset;
8613        private float mFadeStop;
8614        private int mRepeatLimit;
8615
8616        private float mScroll;
8617
8618        Marquee(TextView v) {
8619            final float density = v.getContext().getResources().getDisplayMetrics().density;
8620            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / MARQUEE_RESOLUTION;
8621            mView = new WeakReference<TextView>(v);
8622        }
8623
8624        @Override
8625        public void handleMessage(Message msg) {
8626            switch (msg.what) {
8627                case MESSAGE_START:
8628                    mStatus = MARQUEE_RUNNING;
8629                    tick();
8630                    break;
8631                case MESSAGE_TICK:
8632                    tick();
8633                    break;
8634                case MESSAGE_RESTART:
8635                    if (mStatus == MARQUEE_RUNNING) {
8636                        if (mRepeatLimit >= 0) {
8637                            mRepeatLimit--;
8638                        }
8639                        start(mRepeatLimit);
8640                    }
8641                    break;
8642            }
8643        }
8644
8645        void tick() {
8646            if (mStatus != MARQUEE_RUNNING) {
8647                return;
8648            }
8649
8650            removeMessages(MESSAGE_TICK);
8651
8652            final TextView textView = mView.get();
8653            if (textView != null && (textView.isFocused() || textView.isSelected())) {
8654                mScroll += mScrollUnit;
8655                if (mScroll > mMaxScroll) {
8656                    mScroll = mMaxScroll;
8657                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
8658                } else {
8659                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
8660                }
8661                textView.invalidate();
8662            }
8663        }
8664
8665        void stop() {
8666            mStatus = MARQUEE_STOPPED;
8667            removeMessages(MESSAGE_START);
8668            removeMessages(MESSAGE_RESTART);
8669            removeMessages(MESSAGE_TICK);
8670            resetScroll();
8671        }
8672
8673        private void resetScroll() {
8674            mScroll = 0.0f;
8675            final TextView textView = mView.get();
8676            if (textView != null) textView.invalidate();
8677        }
8678
8679        void start(int repeatLimit) {
8680            if (repeatLimit == 0) {
8681                stop();
8682                return;
8683            }
8684            mRepeatLimit = repeatLimit;
8685            final TextView textView = mView.get();
8686            if (textView != null && textView.mLayout != null) {
8687                mStatus = MARQUEE_STARTING;
8688                mScroll = 0.0f;
8689                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
8690                        textView.getCompoundPaddingRight();
8691                final float lineWidth = textView.mLayout.getLineWidth(0);
8692                final float gap = textWidth / 3.0f;
8693                mGhostStart = lineWidth - textWidth + gap;
8694                mMaxScroll = mGhostStart + textWidth;
8695                mGhostOffset = lineWidth + gap;
8696                mFadeStop = lineWidth + textWidth / 6.0f;
8697                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
8698
8699                textView.invalidate();
8700                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
8701            }
8702        }
8703
8704        float getGhostOffset() {
8705            return mGhostOffset;
8706        }
8707
8708        float getScroll() {
8709            return mScroll;
8710        }
8711
8712        float getMaxFadeScroll() {
8713            return mMaxFadeScroll;
8714        }
8715
8716        boolean shouldDrawLeftFade() {
8717            return mScroll <= mFadeStop;
8718        }
8719
8720        boolean shouldDrawGhost() {
8721            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
8722        }
8723
8724        boolean isRunning() {
8725            return mStatus == MARQUEE_RUNNING;
8726        }
8727
8728        boolean isStopped() {
8729            return mStatus == MARQUEE_STOPPED;
8730        }
8731    }
8732
8733    private class ChangeWatcher implements TextWatcher, SpanWatcher {
8734
8735        private CharSequence mBeforeText;
8736
8737        public void beforeTextChanged(CharSequence buffer, int start,
8738                                      int before, int after) {
8739            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
8740                    + " before=" + before + " after=" + after + ": " + buffer);
8741
8742            if (AccessibilityManager.getInstance(mContext).isEnabled()
8743                    && !isPasswordInputType(getInputType())
8744                    && !hasPasswordTransformationMethod()) {
8745                mBeforeText = buffer.toString();
8746            }
8747
8748            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
8749        }
8750
8751        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
8752            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
8753                    + " before=" + before + " after=" + after + ": " + buffer);
8754            TextView.this.handleTextChanged(buffer, start, before, after);
8755
8756            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
8757                    (isFocused() || isSelected() && isShown())) {
8758                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
8759                mBeforeText = null;
8760            }
8761        }
8762
8763        public void afterTextChanged(Editable buffer) {
8764            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
8765            TextView.this.sendAfterTextChanged(buffer);
8766
8767            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
8768                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
8769            }
8770        }
8771
8772        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
8773            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
8774                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
8775            TextView.this.spanChange(buf, what, s, st, e, en);
8776        }
8777
8778        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
8779            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
8780                    + " what=" + what + ": " + buf);
8781            TextView.this.spanChange(buf, what, -1, s, -1, e);
8782        }
8783
8784        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
8785            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
8786                    + " what=" + what + ": " + buf);
8787            TextView.this.spanChange(buf, what, s, -1, e, -1);
8788        }
8789    }
8790}
8791