TextView.java revision 665f02c66702b77db25e950ff433230186bc3243 
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.Insets;
30import android.graphics.Paint;
31import android.graphics.Path;
32import android.graphics.Rect;
33import android.graphics.RectF;
34import android.graphics.Typeface;
35import android.graphics.drawable.Drawable;
36import android.inputmethodservice.ExtractEditText;
37import android.os.AsyncTask;
38import android.os.Bundle;
39import android.os.Handler;
40import android.os.Message;
41import android.os.Parcel;
42import android.os.Parcelable;
43import android.os.SystemClock;
44import android.provider.Settings;
45import android.text.BoringLayout;
46import android.text.DynamicLayout;
47import android.text.Editable;
48import android.text.GetChars;
49import android.text.GraphicsOperations;
50import android.text.InputFilter;
51import android.text.InputType;
52import android.text.Layout;
53import android.text.ParcelableSpan;
54import android.text.Selection;
55import android.text.SpanWatcher;
56import android.text.Spannable;
57import android.text.SpannableString;
58import android.text.Spanned;
59import android.text.SpannedString;
60import android.text.StaticLayout;
61import android.text.TextDirectionHeuristic;
62import android.text.TextDirectionHeuristics;
63import android.text.TextPaint;
64import android.text.TextUtils;
65import android.text.TextUtils.TruncateAt;
66import android.text.TextWatcher;
67import android.text.method.AllCapsTransformationMethod;
68import android.text.method.ArrowKeyMovementMethod;
69import android.text.method.DateKeyListener;
70import android.text.method.DateTimeKeyListener;
71import android.text.method.DialerKeyListener;
72import android.text.method.DigitsKeyListener;
73import android.text.method.KeyListener;
74import android.text.method.LinkMovementMethod;
75import android.text.method.MetaKeyKeyListener;
76import android.text.method.MovementMethod;
77import android.text.method.PasswordTransformationMethod;
78import android.text.method.SingleLineTransformationMethod;
79import android.text.method.TextKeyListener;
80import android.text.method.TimeKeyListener;
81import android.text.method.TransformationMethod;
82import android.text.method.TransformationMethod2;
83import android.text.method.WordIterator;
84import android.text.style.CharacterStyle;
85import android.text.style.ClickableSpan;
86import android.text.style.ParagraphStyle;
87import android.text.style.SpellCheckSpan;
88import android.text.style.SuggestionSpan;
89import android.text.style.URLSpan;
90import android.text.style.UpdateAppearance;
91import android.text.util.Linkify;
92import android.util.AttributeSet;
93import android.util.FloatMath;
94import android.util.Log;
95import android.util.TypedValue;
96import android.view.AccessibilityIterators.TextSegmentIterator;
97import android.view.ActionMode;
98import android.view.DragEvent;
99import android.view.Gravity;
100import android.view.HapticFeedbackConstants;
101import android.view.KeyCharacterMap;
102import android.view.KeyEvent;
103import android.view.Menu;
104import android.view.MenuItem;
105import android.view.MotionEvent;
106import android.view.View;
107import android.view.ViewConfiguration;
108import android.view.ViewDebug;
109import android.view.ViewGroup.LayoutParams;
110import android.view.ViewRootImpl;
111import android.view.ViewTreeObserver;
112import android.view.accessibility.AccessibilityEvent;
113import android.view.accessibility.AccessibilityManager;
114import android.view.accessibility.AccessibilityNodeInfo;
115import android.view.animation.AnimationUtils;
116import android.view.inputmethod.BaseInputConnection;
117import android.view.inputmethod.CompletionInfo;
118import android.view.inputmethod.CorrectionInfo;
119import android.view.inputmethod.EditorInfo;
120import android.view.inputmethod.ExtractedText;
121import android.view.inputmethod.ExtractedTextRequest;
122import android.view.inputmethod.InputConnection;
123import android.view.inputmethod.InputMethodManager;
124import android.view.textservice.SpellCheckerSubtype;
125import android.view.textservice.TextServicesManager;
126import android.widget.RemoteViews.RemoteView;
127
128import com.android.internal.util.FastMath;
129import com.android.internal.widget.EditableInputConnection;
130
131import org.xmlpull.v1.XmlPullParserException;
132
133import java.io.IOException;
134import java.lang.ref.WeakReference;
135import java.util.ArrayList;
136import java.util.Locale;
137import java.util.concurrent.locks.ReentrantLock;
138
139/**
140 * Displays text to the user and optionally allows them to edit it.  A TextView
141 * is a complete text editor, however the basic class is configured to not
142 * allow editing; see {@link EditText} for a subclass that configures the text
143 * view for editing.
144 *
145 * <p>
146 * <b>XML attributes</b>
147 * <p>
148 * See {@link android.R.styleable#TextView TextView Attributes},
149 * {@link android.R.styleable#View View Attributes}
150 *
151 * @attr ref android.R.styleable#TextView_text
152 * @attr ref android.R.styleable#TextView_bufferType
153 * @attr ref android.R.styleable#TextView_hint
154 * @attr ref android.R.styleable#TextView_textColor
155 * @attr ref android.R.styleable#TextView_textColorHighlight
156 * @attr ref android.R.styleable#TextView_textColorHint
157 * @attr ref android.R.styleable#TextView_textAppearance
158 * @attr ref android.R.styleable#TextView_textColorLink
159 * @attr ref android.R.styleable#TextView_textSize
160 * @attr ref android.R.styleable#TextView_textScaleX
161 * @attr ref android.R.styleable#TextView_fontFamily
162 * @attr ref android.R.styleable#TextView_typeface
163 * @attr ref android.R.styleable#TextView_textStyle
164 * @attr ref android.R.styleable#TextView_cursorVisible
165 * @attr ref android.R.styleable#TextView_maxLines
166 * @attr ref android.R.styleable#TextView_maxHeight
167 * @attr ref android.R.styleable#TextView_lines
168 * @attr ref android.R.styleable#TextView_height
169 * @attr ref android.R.styleable#TextView_minLines
170 * @attr ref android.R.styleable#TextView_minHeight
171 * @attr ref android.R.styleable#TextView_maxEms
172 * @attr ref android.R.styleable#TextView_maxWidth
173 * @attr ref android.R.styleable#TextView_ems
174 * @attr ref android.R.styleable#TextView_width
175 * @attr ref android.R.styleable#TextView_minEms
176 * @attr ref android.R.styleable#TextView_minWidth
177 * @attr ref android.R.styleable#TextView_gravity
178 * @attr ref android.R.styleable#TextView_scrollHorizontally
179 * @attr ref android.R.styleable#TextView_password
180 * @attr ref android.R.styleable#TextView_singleLine
181 * @attr ref android.R.styleable#TextView_selectAllOnFocus
182 * @attr ref android.R.styleable#TextView_includeFontPadding
183 * @attr ref android.R.styleable#TextView_maxLength
184 * @attr ref android.R.styleable#TextView_shadowColor
185 * @attr ref android.R.styleable#TextView_shadowDx
186 * @attr ref android.R.styleable#TextView_shadowDy
187 * @attr ref android.R.styleable#TextView_shadowRadius
188 * @attr ref android.R.styleable#TextView_autoLink
189 * @attr ref android.R.styleable#TextView_linksClickable
190 * @attr ref android.R.styleable#TextView_numeric
191 * @attr ref android.R.styleable#TextView_digits
192 * @attr ref android.R.styleable#TextView_phoneNumber
193 * @attr ref android.R.styleable#TextView_inputMethod
194 * @attr ref android.R.styleable#TextView_capitalize
195 * @attr ref android.R.styleable#TextView_autoText
196 * @attr ref android.R.styleable#TextView_editable
197 * @attr ref android.R.styleable#TextView_freezesText
198 * @attr ref android.R.styleable#TextView_ellipsize
199 * @attr ref android.R.styleable#TextView_drawableTop
200 * @attr ref android.R.styleable#TextView_drawableBottom
201 * @attr ref android.R.styleable#TextView_drawableRight
202 * @attr ref android.R.styleable#TextView_drawableLeft
203 * @attr ref android.R.styleable#TextView_drawableStart
204 * @attr ref android.R.styleable#TextView_drawableEnd
205 * @attr ref android.R.styleable#TextView_drawablePadding
206 * @attr ref android.R.styleable#TextView_lineSpacingExtra
207 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
208 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
209 * @attr ref android.R.styleable#TextView_inputType
210 * @attr ref android.R.styleable#TextView_imeOptions
211 * @attr ref android.R.styleable#TextView_privateImeOptions
212 * @attr ref android.R.styleable#TextView_imeActionLabel
213 * @attr ref android.R.styleable#TextView_imeActionId
214 * @attr ref android.R.styleable#TextView_editorExtras
215 */
216@RemoteView
217public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
218    static final String LOG_TAG = "TextView";
219    static final boolean DEBUG_EXTRACT = false;
220
221    // Enum for the "typeface" XML parameter.
222    // TODO: How can we get this from the XML instead of hardcoding it here?
223    private static final int SANS = 1;
224    private static final int SERIF = 2;
225    private static final int MONOSPACE = 3;
226
227    // Bitfield for the "numeric" XML parameter.
228    // TODO: How can we get this from the XML instead of hardcoding it here?
229    private static final int SIGNED = 2;
230    private static final int DECIMAL = 4;
231
232    /**
233     * Draw marquee text with fading edges as usual
234     */
235    private static final int MARQUEE_FADE_NORMAL = 0;
236
237    /**
238     * Draw marquee text as ellipsize end while inactive instead of with the fade.
239     * (Useful for devices where the fade can be expensive if overdone)
240     */
241    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
242
243    /**
244     * Draw marquee text with fading edges because it is currently active/animating.
245     */
246    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
247
248    private static final int LINES = 1;
249    private static final int EMS = LINES;
250    private static final int PIXELS = 2;
251
252    private static final RectF TEMP_RECTF = new RectF();
253
254    // XXX should be much larger
255    private static final int VERY_WIDE = 1024*1024;
256    private static final int ANIMATED_SCROLL_GAP = 250;
257
258    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
259    private static final Spanned EMPTY_SPANNED = new SpannedString("");
260
261    private static final int CHANGE_WATCHER_PRIORITY = 100;
262
263    // New state used to change background based on whether this TextView is multiline.
264    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
265
266    // System wide time for last cut or copy action.
267    static long LAST_CUT_OR_COPY_TIME;
268
269    private ColorStateList mTextColor;
270    private ColorStateList mHintTextColor;
271    private ColorStateList mLinkTextColor;
272    private int mCurTextColor;
273    private int mCurHintTextColor;
274    private boolean mFreezesText;
275    private boolean mTemporaryDetach;
276    private boolean mDispatchTemporaryDetach;
277
278    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
279    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
280
281    private float mShadowRadius, mShadowDx, mShadowDy;
282
283    private boolean mPreDrawRegistered;
284
285    private TextUtils.TruncateAt mEllipsize;
286
287    static class Drawables {
288        final static int DRAWABLE_NONE = -1;
289        final static int DRAWABLE_RIGHT = 0;
290        final static int DRAWABLE_LEFT = 1;
291
292        final Rect mCompoundRect = new Rect();
293
294        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight,
295                mDrawableStart, mDrawableEnd, mDrawableError, mDrawableTemp;
296
297        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
298                mDrawableSizeStart, mDrawableSizeEnd, mDrawableSizeError, mDrawableSizeTemp;
299
300        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
301                mDrawableHeightStart, mDrawableHeightEnd, mDrawableHeightError, mDrawableHeightTemp;
302
303        int mDrawablePadding;
304
305        int mDrawableSaved = DRAWABLE_NONE;
306
307        public void resolveWithLayoutDirection(int layoutDirection) {
308            switch(layoutDirection) {
309                case LAYOUT_DIRECTION_RTL:
310                    if (mDrawableStart != null) {
311                        mDrawableRight = mDrawableStart;
312
313                        mDrawableSizeRight = mDrawableSizeStart;
314                        mDrawableHeightRight = mDrawableHeightStart;
315                    }
316                    if (mDrawableEnd != null) {
317                        mDrawableLeft = mDrawableEnd;
318
319                        mDrawableSizeLeft = mDrawableSizeEnd;
320                        mDrawableHeightLeft = mDrawableHeightEnd;
321                    }
322                    break;
323
324                case LAYOUT_DIRECTION_LTR:
325                default:
326                    if (mDrawableStart != null) {
327                        mDrawableLeft = mDrawableStart;
328
329                        mDrawableSizeLeft = mDrawableSizeStart;
330                        mDrawableHeightLeft = mDrawableHeightStart;
331                    }
332                    if (mDrawableEnd != null) {
333                        mDrawableRight = mDrawableEnd;
334
335                        mDrawableSizeRight = mDrawableSizeEnd;
336                        mDrawableHeightRight = mDrawableHeightEnd;
337                    }
338                    break;
339            }
340            applyErrorDrawableIfNeeded(layoutDirection);
341            updateDrawablesLayoutDirection(layoutDirection);
342        }
343
344        private void updateDrawablesLayoutDirection(int layoutDirection) {
345            if (mDrawableLeft != null) {
346                mDrawableLeft.setLayoutDirection(layoutDirection);
347            }
348            if (mDrawableRight != null) {
349                mDrawableRight.setLayoutDirection(layoutDirection);
350            }
351            if (mDrawableTop != null) {
352                mDrawableTop.setLayoutDirection(layoutDirection);
353            }
354            if (mDrawableBottom != null) {
355                mDrawableBottom.setLayoutDirection(layoutDirection);
356            }
357        }
358
359        public void setErrorDrawable(Drawable dr, TextView tv) {
360            if (mDrawableError != dr && mDrawableError != null) {
361                mDrawableError.setCallback(null);
362            }
363            mDrawableError = dr;
364
365            final Rect compoundRect = mCompoundRect;
366            int[] state = tv.getDrawableState();
367
368            if (mDrawableError != null) {
369                mDrawableError.setState(state);
370                mDrawableError.copyBounds(compoundRect);
371                mDrawableError.setCallback(tv);
372                mDrawableSizeError = compoundRect.width();
373                mDrawableHeightError = compoundRect.height();
374            } else {
375                mDrawableSizeError = mDrawableHeightError = 0;
376            }
377        }
378
379        private void applyErrorDrawableIfNeeded(int layoutDirection) {
380            // first restore the initial state if needed
381            switch (mDrawableSaved) {
382                case DRAWABLE_LEFT:
383                    mDrawableLeft = mDrawableTemp;
384                    mDrawableSizeLeft = mDrawableSizeTemp;
385                    mDrawableHeightLeft = mDrawableHeightTemp;
386                    break;
387                case DRAWABLE_RIGHT:
388                    mDrawableRight = mDrawableTemp;
389                    mDrawableSizeRight = mDrawableSizeTemp;
390                    mDrawableHeightRight = mDrawableHeightTemp;
391                    break;
392                case DRAWABLE_NONE:
393                default:
394            }
395            // then, if needed, assign the Error drawable to the correct location
396            if (mDrawableError != null) {
397                switch(layoutDirection) {
398                    case LAYOUT_DIRECTION_RTL:
399                        mDrawableSaved = DRAWABLE_LEFT;
400
401                        mDrawableTemp = mDrawableLeft;
402                        mDrawableSizeTemp = mDrawableSizeLeft;
403                        mDrawableHeightTemp = mDrawableHeightLeft;
404
405                        mDrawableLeft = mDrawableError;
406                        mDrawableSizeLeft = mDrawableSizeError;
407                        mDrawableHeightLeft = mDrawableHeightError;
408                        break;
409                    case LAYOUT_DIRECTION_LTR:
410                    default:
411                        mDrawableSaved = DRAWABLE_RIGHT;
412
413                        mDrawableTemp = mDrawableRight;
414                        mDrawableSizeTemp = mDrawableSizeRight;
415                        mDrawableHeightTemp = mDrawableHeightRight;
416
417                        mDrawableRight = mDrawableError;
418                        mDrawableSizeRight = mDrawableSizeError;
419                        mDrawableHeightRight = mDrawableHeightError;
420                        break;
421                }
422            }
423        }
424    }
425
426    Drawables mDrawables;
427
428    private CharWrapper mCharWrapper;
429
430    private Marquee mMarquee;
431    private boolean mRestartMarquee;
432
433    private int mMarqueeRepeatLimit = 3;
434
435    private int mLastLayoutDirection = -1;
436
437    /**
438     * On some devices the fading edges add a performance penalty if used
439     * extensively in the same layout. This mode indicates how the marquee
440     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
441     */
442    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
443
444    /**
445     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
446     * the layout that should be used when the mode switches.
447     */
448    private Layout mSavedMarqueeModeLayout;
449
450    @ViewDebug.ExportedProperty(category = "text")
451    private CharSequence mText;
452    private CharSequence mTransformed;
453    private BufferType mBufferType = BufferType.NORMAL;
454
455    private CharSequence mHint;
456    private Layout mHintLayout;
457
458    private MovementMethod mMovement;
459
460    private TransformationMethod mTransformation;
461    private boolean mAllowTransformationLengthChange;
462    private ChangeWatcher mChangeWatcher;
463
464    private ArrayList<TextWatcher> mListeners;
465
466    // display attributes
467    private final TextPaint mTextPaint;
468    private boolean mUserSetTextScaleX;
469    private Layout mLayout;
470
471    private int mGravity = Gravity.TOP | Gravity.START;
472    private boolean mHorizontallyScrolling;
473
474    private int mAutoLinkMask;
475    private boolean mLinksClickable = true;
476
477    private float mSpacingMult = 1.0f;
478    private float mSpacingAdd = 0.0f;
479
480    private int mMaximum = Integer.MAX_VALUE;
481    private int mMaxMode = LINES;
482    private int mMinimum = 0;
483    private int mMinMode = LINES;
484
485    private int mOldMaximum = mMaximum;
486    private int mOldMaxMode = mMaxMode;
487
488    private int mMaxWidth = Integer.MAX_VALUE;
489    private int mMaxWidthMode = PIXELS;
490    private int mMinWidth = 0;
491    private int mMinWidthMode = PIXELS;
492
493    private boolean mSingleLine;
494    private int mDesiredHeightAtMeasure = -1;
495    private boolean mIncludePad = true;
496    private int mDeferScroll = -1;
497
498    // tmp primitives, so we don't alloc them on each draw
499    private Rect mTempRect;
500    private long mLastScroll;
501    private Scroller mScroller;
502
503    private BoringLayout.Metrics mBoring, mHintBoring;
504    private BoringLayout mSavedLayout, mSavedHintLayout;
505
506    private TextDirectionHeuristic mTextDir;
507
508    private InputFilter[] mFilters = NO_FILTERS;
509
510    private volatile Locale mCurrentSpellCheckerLocaleCache;
511    private final ReentrantLock mCurrentTextServicesLocaleLock = new ReentrantLock();
512
513    // It is possible to have a selection even when mEditor is null (programmatically set, like when
514    // a link is pressed). These highlight-related fields do not go in mEditor.
515    int mHighlightColor = 0x6633B5E5;
516    private Path mHighlightPath;
517    private final Paint mHighlightPaint;
518    private boolean mHighlightPathBogus = true;
519
520    // Although these fields are specific to editable text, they are not added to Editor because
521    // they are defined by the TextView's style and are theme-dependent.
522    int mCursorDrawableRes;
523    // These four fields, could be moved to Editor, since we know their default values and we
524    // could condition the creation of the Editor to a non standard value. This is however
525    // brittle since the hardcoded values here (such as
526    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
527    // default style is modified.
528    int mTextSelectHandleLeftRes;
529    int mTextSelectHandleRightRes;
530    int mTextSelectHandleRes;
531    int mTextEditSuggestionItemLayout;
532
533    /**
534     * EditText specific data, created on demand when one of the Editor fields is used.
535     * See {@link #createEditorIfNeeded()}.
536     */
537    private Editor mEditor;
538
539    /*
540     * Kick-start the font cache for the zygote process (to pay the cost of
541     * initializing freetype for our default font only once).
542     */
543    static {
544        Paint p = new Paint();
545        p.setAntiAlias(true);
546        // We don't care about the result, just the side-effect of measuring.
547        p.measureText("H");
548    }
549
550    /**
551     * Interface definition for a callback to be invoked when an action is
552     * performed on the editor.
553     */
554    public interface OnEditorActionListener {
555        /**
556         * Called when an action is being performed.
557         *
558         * @param v The view that was clicked.
559         * @param actionId Identifier of the action.  This will be either the
560         * identifier you supplied, or {@link EditorInfo#IME_NULL
561         * EditorInfo.IME_NULL} if being called due to the enter key
562         * being pressed.
563         * @param event If triggered by an enter key, this is the event;
564         * otherwise, this is null.
565         * @return Return true if you have consumed the action, else false.
566         */
567        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
568    }
569
570    public TextView(Context context) {
571        this(context, null);
572    }
573
574    public TextView(Context context, AttributeSet attrs) {
575        this(context, attrs, com.android.internal.R.attr.textViewStyle);
576    }
577
578    @SuppressWarnings("deprecation")
579    public TextView(Context context, AttributeSet attrs, int defStyle) {
580        super(context, attrs, defStyle);
581        mText = "";
582
583        final Resources res = getResources();
584        final CompatibilityInfo compat = res.getCompatibilityInfo();
585
586        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
587        mTextPaint.density = res.getDisplayMetrics().density;
588        mTextPaint.setCompatibilityScaling(compat.applicationScale);
589
590        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
591        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
592
593        mMovement = getDefaultMovementMethod();
594
595        mTransformation = null;
596
597        int textColorHighlight = 0;
598        ColorStateList textColor = null;
599        ColorStateList textColorHint = null;
600        ColorStateList textColorLink = null;
601        int textSize = 15;
602        String fontFamily = null;
603        int typefaceIndex = -1;
604        int styleIndex = -1;
605        boolean allCaps = false;
606        int shadowcolor = 0;
607        float dx = 0, dy = 0, r = 0;
608
609        final Resources.Theme theme = context.getTheme();
610
611        /*
612         * Look the appearance up without checking first if it exists because
613         * almost every TextView has one and it greatly simplifies the logic
614         * to be able to parse the appearance first and then let specific tags
615         * for this View override it.
616         */
617        TypedArray a = theme.obtainStyledAttributes(
618                    attrs, com.android.internal.R.styleable.TextViewAppearance, defStyle, 0);
619        TypedArray appearance = null;
620        int ap = a.getResourceId(
621                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
622        a.recycle();
623        if (ap != -1) {
624            appearance = theme.obtainStyledAttributes(
625                    ap, com.android.internal.R.styleable.TextAppearance);
626        }
627        if (appearance != null) {
628            int n = appearance.getIndexCount();
629            for (int i = 0; i < n; i++) {
630                int attr = appearance.getIndex(i);
631
632                switch (attr) {
633                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
634                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
635                    break;
636
637                case com.android.internal.R.styleable.TextAppearance_textColor:
638                    textColor = appearance.getColorStateList(attr);
639                    break;
640
641                case com.android.internal.R.styleable.TextAppearance_textColorHint:
642                    textColorHint = appearance.getColorStateList(attr);
643                    break;
644
645                case com.android.internal.R.styleable.TextAppearance_textColorLink:
646                    textColorLink = appearance.getColorStateList(attr);
647                    break;
648
649                case com.android.internal.R.styleable.TextAppearance_textSize:
650                    textSize = appearance.getDimensionPixelSize(attr, textSize);
651                    break;
652
653                case com.android.internal.R.styleable.TextAppearance_typeface:
654                    typefaceIndex = appearance.getInt(attr, -1);
655                    break;
656
657                case com.android.internal.R.styleable.TextAppearance_fontFamily:
658                    fontFamily = appearance.getString(attr);
659                    break;
660
661                case com.android.internal.R.styleable.TextAppearance_textStyle:
662                    styleIndex = appearance.getInt(attr, -1);
663                    break;
664
665                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
666                    allCaps = appearance.getBoolean(attr, false);
667                    break;
668
669                case com.android.internal.R.styleable.TextAppearance_shadowColor:
670                    shadowcolor = a.getInt(attr, 0);
671                    break;
672
673                case com.android.internal.R.styleable.TextAppearance_shadowDx:
674                    dx = a.getFloat(attr, 0);
675                    break;
676
677                case com.android.internal.R.styleable.TextAppearance_shadowDy:
678                    dy = a.getFloat(attr, 0);
679                    break;
680
681                case com.android.internal.R.styleable.TextAppearance_shadowRadius:
682                    r = a.getFloat(attr, 0);
683                    break;
684                }
685            }
686
687            appearance.recycle();
688        }
689
690        boolean editable = getDefaultEditable();
691        CharSequence inputMethod = null;
692        int numeric = 0;
693        CharSequence digits = null;
694        boolean phone = false;
695        boolean autotext = false;
696        int autocap = -1;
697        int buffertype = 0;
698        boolean selectallonfocus = false;
699        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
700            drawableBottom = null, drawableStart = null, drawableEnd = null;
701        int drawablePadding = 0;
702        int ellipsize = -1;
703        boolean singleLine = false;
704        int maxlength = -1;
705        CharSequence text = "";
706        CharSequence hint = null;
707        boolean password = false;
708        int inputType = EditorInfo.TYPE_NULL;
709
710        a = theme.obtainStyledAttributes(
711                    attrs, com.android.internal.R.styleable.TextView, defStyle, 0);
712
713        int n = a.getIndexCount();
714        for (int i = 0; i < n; i++) {
715            int attr = a.getIndex(i);
716
717            switch (attr) {
718            case com.android.internal.R.styleable.TextView_editable:
719                editable = a.getBoolean(attr, editable);
720                break;
721
722            case com.android.internal.R.styleable.TextView_inputMethod:
723                inputMethod = a.getText(attr);
724                break;
725
726            case com.android.internal.R.styleable.TextView_numeric:
727                numeric = a.getInt(attr, numeric);
728                break;
729
730            case com.android.internal.R.styleable.TextView_digits:
731                digits = a.getText(attr);
732                break;
733
734            case com.android.internal.R.styleable.TextView_phoneNumber:
735                phone = a.getBoolean(attr, phone);
736                break;
737
738            case com.android.internal.R.styleable.TextView_autoText:
739                autotext = a.getBoolean(attr, autotext);
740                break;
741
742            case com.android.internal.R.styleable.TextView_capitalize:
743                autocap = a.getInt(attr, autocap);
744                break;
745
746            case com.android.internal.R.styleable.TextView_bufferType:
747                buffertype = a.getInt(attr, buffertype);
748                break;
749
750            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
751                selectallonfocus = a.getBoolean(attr, selectallonfocus);
752                break;
753
754            case com.android.internal.R.styleable.TextView_autoLink:
755                mAutoLinkMask = a.getInt(attr, 0);
756                break;
757
758            case com.android.internal.R.styleable.TextView_linksClickable:
759                mLinksClickable = a.getBoolean(attr, true);
760                break;
761
762            case com.android.internal.R.styleable.TextView_drawableLeft:
763                drawableLeft = a.getDrawable(attr);
764                break;
765
766            case com.android.internal.R.styleable.TextView_drawableTop:
767                drawableTop = a.getDrawable(attr);
768                break;
769
770            case com.android.internal.R.styleable.TextView_drawableRight:
771                drawableRight = a.getDrawable(attr);
772                break;
773
774            case com.android.internal.R.styleable.TextView_drawableBottom:
775                drawableBottom = a.getDrawable(attr);
776                break;
777
778            case com.android.internal.R.styleable.TextView_drawableStart:
779                drawableStart = a.getDrawable(attr);
780                break;
781
782            case com.android.internal.R.styleable.TextView_drawableEnd:
783                drawableEnd = a.getDrawable(attr);
784                break;
785
786            case com.android.internal.R.styleable.TextView_drawablePadding:
787                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
788                break;
789
790            case com.android.internal.R.styleable.TextView_maxLines:
791                setMaxLines(a.getInt(attr, -1));
792                break;
793
794            case com.android.internal.R.styleable.TextView_maxHeight:
795                setMaxHeight(a.getDimensionPixelSize(attr, -1));
796                break;
797
798            case com.android.internal.R.styleable.TextView_lines:
799                setLines(a.getInt(attr, -1));
800                break;
801
802            case com.android.internal.R.styleable.TextView_height:
803                setHeight(a.getDimensionPixelSize(attr, -1));
804                break;
805
806            case com.android.internal.R.styleable.TextView_minLines:
807                setMinLines(a.getInt(attr, -1));
808                break;
809
810            case com.android.internal.R.styleable.TextView_minHeight:
811                setMinHeight(a.getDimensionPixelSize(attr, -1));
812                break;
813
814            case com.android.internal.R.styleable.TextView_maxEms:
815                setMaxEms(a.getInt(attr, -1));
816                break;
817
818            case com.android.internal.R.styleable.TextView_maxWidth:
819                setMaxWidth(a.getDimensionPixelSize(attr, -1));
820                break;
821
822            case com.android.internal.R.styleable.TextView_ems:
823                setEms(a.getInt(attr, -1));
824                break;
825
826            case com.android.internal.R.styleable.TextView_width:
827                setWidth(a.getDimensionPixelSize(attr, -1));
828                break;
829
830            case com.android.internal.R.styleable.TextView_minEms:
831                setMinEms(a.getInt(attr, -1));
832                break;
833
834            case com.android.internal.R.styleable.TextView_minWidth:
835                setMinWidth(a.getDimensionPixelSize(attr, -1));
836                break;
837
838            case com.android.internal.R.styleable.TextView_gravity:
839                setGravity(a.getInt(attr, -1));
840                break;
841
842            case com.android.internal.R.styleable.TextView_hint:
843                hint = a.getText(attr);
844                break;
845
846            case com.android.internal.R.styleable.TextView_text:
847                text = a.getText(attr);
848                break;
849
850            case com.android.internal.R.styleable.TextView_scrollHorizontally:
851                if (a.getBoolean(attr, false)) {
852                    setHorizontallyScrolling(true);
853                }
854                break;
855
856            case com.android.internal.R.styleable.TextView_singleLine:
857                singleLine = a.getBoolean(attr, singleLine);
858                break;
859
860            case com.android.internal.R.styleable.TextView_ellipsize:
861                ellipsize = a.getInt(attr, ellipsize);
862                break;
863
864            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
865                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
866                break;
867
868            case com.android.internal.R.styleable.TextView_includeFontPadding:
869                if (!a.getBoolean(attr, true)) {
870                    setIncludeFontPadding(false);
871                }
872                break;
873
874            case com.android.internal.R.styleable.TextView_cursorVisible:
875                if (!a.getBoolean(attr, true)) {
876                    setCursorVisible(false);
877                }
878                break;
879
880            case com.android.internal.R.styleable.TextView_maxLength:
881                maxlength = a.getInt(attr, -1);
882                break;
883
884            case com.android.internal.R.styleable.TextView_textScaleX:
885                setTextScaleX(a.getFloat(attr, 1.0f));
886                break;
887
888            case com.android.internal.R.styleable.TextView_freezesText:
889                mFreezesText = a.getBoolean(attr, false);
890                break;
891
892            case com.android.internal.R.styleable.TextView_shadowColor:
893                shadowcolor = a.getInt(attr, 0);
894                break;
895
896            case com.android.internal.R.styleable.TextView_shadowDx:
897                dx = a.getFloat(attr, 0);
898                break;
899
900            case com.android.internal.R.styleable.TextView_shadowDy:
901                dy = a.getFloat(attr, 0);
902                break;
903
904            case com.android.internal.R.styleable.TextView_shadowRadius:
905                r = a.getFloat(attr, 0);
906                break;
907
908            case com.android.internal.R.styleable.TextView_enabled:
909                setEnabled(a.getBoolean(attr, isEnabled()));
910                break;
911
912            case com.android.internal.R.styleable.TextView_textColorHighlight:
913                textColorHighlight = a.getColor(attr, textColorHighlight);
914                break;
915
916            case com.android.internal.R.styleable.TextView_textColor:
917                textColor = a.getColorStateList(attr);
918                break;
919
920            case com.android.internal.R.styleable.TextView_textColorHint:
921                textColorHint = a.getColorStateList(attr);
922                break;
923
924            case com.android.internal.R.styleable.TextView_textColorLink:
925                textColorLink = a.getColorStateList(attr);
926                break;
927
928            case com.android.internal.R.styleable.TextView_textSize:
929                textSize = a.getDimensionPixelSize(attr, textSize);
930                break;
931
932            case com.android.internal.R.styleable.TextView_typeface:
933                typefaceIndex = a.getInt(attr, typefaceIndex);
934                break;
935
936            case com.android.internal.R.styleable.TextView_textStyle:
937                styleIndex = a.getInt(attr, styleIndex);
938                break;
939
940            case com.android.internal.R.styleable.TextView_fontFamily:
941                fontFamily = a.getString(attr);
942                break;
943
944            case com.android.internal.R.styleable.TextView_password:
945                password = a.getBoolean(attr, password);
946                break;
947
948            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
949                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
950                break;
951
952            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
953                mSpacingMult = a.getFloat(attr, mSpacingMult);
954                break;
955
956            case com.android.internal.R.styleable.TextView_inputType:
957                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
958                break;
959
960            case com.android.internal.R.styleable.TextView_imeOptions:
961                createEditorIfNeeded();
962                mEditor.createInputContentTypeIfNeeded();
963                mEditor.mInputContentType.imeOptions = a.getInt(attr,
964                        mEditor.mInputContentType.imeOptions);
965                break;
966
967            case com.android.internal.R.styleable.TextView_imeActionLabel:
968                createEditorIfNeeded();
969                mEditor.createInputContentTypeIfNeeded();
970                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
971                break;
972
973            case com.android.internal.R.styleable.TextView_imeActionId:
974                createEditorIfNeeded();
975                mEditor.createInputContentTypeIfNeeded();
976                mEditor.mInputContentType.imeActionId = a.getInt(attr,
977                        mEditor.mInputContentType.imeActionId);
978                break;
979
980            case com.android.internal.R.styleable.TextView_privateImeOptions:
981                setPrivateImeOptions(a.getString(attr));
982                break;
983
984            case com.android.internal.R.styleable.TextView_editorExtras:
985                try {
986                    setInputExtras(a.getResourceId(attr, 0));
987                } catch (XmlPullParserException e) {
988                    Log.w(LOG_TAG, "Failure reading input extras", e);
989                } catch (IOException e) {
990                    Log.w(LOG_TAG, "Failure reading input extras", e);
991                }
992                break;
993
994            case com.android.internal.R.styleable.TextView_textCursorDrawable:
995                mCursorDrawableRes = a.getResourceId(attr, 0);
996                break;
997
998            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
999                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
1000                break;
1001
1002            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
1003                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
1004                break;
1005
1006            case com.android.internal.R.styleable.TextView_textSelectHandle:
1007                mTextSelectHandleRes = a.getResourceId(attr, 0);
1008                break;
1009
1010            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
1011                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
1012                break;
1013
1014            case com.android.internal.R.styleable.TextView_textIsSelectable:
1015                setTextIsSelectable(a.getBoolean(attr, false));
1016                break;
1017
1018            case com.android.internal.R.styleable.TextView_textAllCaps:
1019                allCaps = a.getBoolean(attr, false);
1020                break;
1021            }
1022        }
1023        a.recycle();
1024
1025        BufferType bufferType = BufferType.EDITABLE;
1026
1027        final int variation =
1028                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
1029        final boolean passwordInputType = variation
1030                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
1031        final boolean webPasswordInputType = variation
1032                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
1033        final boolean numberPasswordInputType = variation
1034                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
1035
1036        if (inputMethod != null) {
1037            Class<?> c;
1038
1039            try {
1040                c = Class.forName(inputMethod.toString());
1041            } catch (ClassNotFoundException ex) {
1042                throw new RuntimeException(ex);
1043            }
1044
1045            try {
1046                createEditorIfNeeded();
1047                mEditor.mKeyListener = (KeyListener) c.newInstance();
1048            } catch (InstantiationException ex) {
1049                throw new RuntimeException(ex);
1050            } catch (IllegalAccessException ex) {
1051                throw new RuntimeException(ex);
1052            }
1053            try {
1054                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1055                        ? inputType
1056                        : mEditor.mKeyListener.getInputType();
1057            } catch (IncompatibleClassChangeError e) {
1058                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1059            }
1060        } else if (digits != null) {
1061            createEditorIfNeeded();
1062            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
1063            // If no input type was specified, we will default to generic
1064            // text, since we can't tell the IME about the set of digits
1065            // that was selected.
1066            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1067                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
1068        } else if (inputType != EditorInfo.TYPE_NULL) {
1069            setInputType(inputType, true);
1070            // If set, the input type overrides what was set using the deprecated singleLine flag.
1071            singleLine = !isMultilineInputType(inputType);
1072        } else if (phone) {
1073            createEditorIfNeeded();
1074            mEditor.mKeyListener = DialerKeyListener.getInstance();
1075            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
1076        } else if (numeric != 0) {
1077            createEditorIfNeeded();
1078            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
1079                                                   (numeric & DECIMAL) != 0);
1080            inputType = EditorInfo.TYPE_CLASS_NUMBER;
1081            if ((numeric & SIGNED) != 0) {
1082                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
1083            }
1084            if ((numeric & DECIMAL) != 0) {
1085                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
1086            }
1087            mEditor.mInputType = inputType;
1088        } else if (autotext || autocap != -1) {
1089            TextKeyListener.Capitalize cap;
1090
1091            inputType = EditorInfo.TYPE_CLASS_TEXT;
1092
1093            switch (autocap) {
1094            case 1:
1095                cap = TextKeyListener.Capitalize.SENTENCES;
1096                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
1097                break;
1098
1099            case 2:
1100                cap = TextKeyListener.Capitalize.WORDS;
1101                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
1102                break;
1103
1104            case 3:
1105                cap = TextKeyListener.Capitalize.CHARACTERS;
1106                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
1107                break;
1108
1109            default:
1110                cap = TextKeyListener.Capitalize.NONE;
1111                break;
1112            }
1113
1114            createEditorIfNeeded();
1115            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
1116            mEditor.mInputType = inputType;
1117        } else if (isTextSelectable()) {
1118            // Prevent text changes from keyboard.
1119            if (mEditor != null) {
1120                mEditor.mKeyListener = null;
1121                mEditor.mInputType = EditorInfo.TYPE_NULL;
1122            }
1123            bufferType = BufferType.SPANNABLE;
1124            // So that selection can be changed using arrow keys and touch is handled.
1125            setMovementMethod(ArrowKeyMovementMethod.getInstance());
1126        } else if (editable) {
1127            createEditorIfNeeded();
1128            mEditor.mKeyListener = TextKeyListener.getInstance();
1129            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1130        } else {
1131            if (mEditor != null) mEditor.mKeyListener = null;
1132
1133            switch (buffertype) {
1134                case 0:
1135                    bufferType = BufferType.NORMAL;
1136                    break;
1137                case 1:
1138                    bufferType = BufferType.SPANNABLE;
1139                    break;
1140                case 2:
1141                    bufferType = BufferType.EDITABLE;
1142                    break;
1143            }
1144        }
1145
1146        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
1147                webPasswordInputType, numberPasswordInputType);
1148
1149        if (selectallonfocus) {
1150            createEditorIfNeeded();
1151            mEditor.mSelectAllOnFocus = true;
1152
1153            if (bufferType == BufferType.NORMAL)
1154                bufferType = BufferType.SPANNABLE;
1155        }
1156
1157        setCompoundDrawablesWithIntrinsicBounds(
1158            drawableLeft, drawableTop, drawableRight, drawableBottom);
1159        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1160        setCompoundDrawablePadding(drawablePadding);
1161
1162        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1163        // of lines of height are unchanged for multi-line TextViews.
1164        setInputTypeSingleLine(singleLine);
1165        applySingleLine(singleLine, singleLine, singleLine);
1166
1167        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1168                ellipsize = 3; // END
1169        }
1170
1171        switch (ellipsize) {
1172            case 1:
1173                setEllipsize(TextUtils.TruncateAt.START);
1174                break;
1175            case 2:
1176                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1177                break;
1178            case 3:
1179                setEllipsize(TextUtils.TruncateAt.END);
1180                break;
1181            case 4:
1182                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1183                    setHorizontalFadingEdgeEnabled(true);
1184                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1185                } else {
1186                    setHorizontalFadingEdgeEnabled(false);
1187                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1188                }
1189                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1190                break;
1191        }
1192
1193        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1194        setHintTextColor(textColorHint);
1195        setLinkTextColor(textColorLink);
1196        if (textColorHighlight != 0) {
1197            setHighlightColor(textColorHighlight);
1198        }
1199        setRawTextSize(textSize);
1200
1201        if (allCaps) {
1202            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1203        }
1204
1205        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1206            setTransformationMethod(PasswordTransformationMethod.getInstance());
1207            typefaceIndex = MONOSPACE;
1208        } else if (mEditor != null &&
1209                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1210                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1211            typefaceIndex = MONOSPACE;
1212        }
1213
1214        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1215
1216        if (shadowcolor != 0) {
1217            setShadowLayer(r, dx, dy, shadowcolor);
1218        }
1219
1220        if (maxlength >= 0) {
1221            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1222        } else {
1223            setFilters(NO_FILTERS);
1224        }
1225
1226        setText(text, bufferType);
1227        if (hint != null) setHint(hint);
1228
1229        /*
1230         * Views are not normally focusable unless specified to be.
1231         * However, TextViews that have input or movement methods *are*
1232         * focusable by default.
1233         */
1234        a = context.obtainStyledAttributes(attrs,
1235                                           com.android.internal.R.styleable.View,
1236                                           defStyle, 0);
1237
1238        boolean focusable = mMovement != null || getKeyListener() != null;
1239        boolean clickable = focusable;
1240        boolean longClickable = focusable;
1241
1242        n = a.getIndexCount();
1243        for (int i = 0; i < n; i++) {
1244            int attr = a.getIndex(i);
1245
1246            switch (attr) {
1247            case com.android.internal.R.styleable.View_focusable:
1248                focusable = a.getBoolean(attr, focusable);
1249                break;
1250
1251            case com.android.internal.R.styleable.View_clickable:
1252                clickable = a.getBoolean(attr, clickable);
1253                break;
1254
1255            case com.android.internal.R.styleable.View_longClickable:
1256                longClickable = a.getBoolean(attr, longClickable);
1257                break;
1258            }
1259        }
1260        a.recycle();
1261
1262        setFocusable(focusable);
1263        setClickable(clickable);
1264        setLongClickable(longClickable);
1265
1266        if (mEditor != null) mEditor.prepareCursorControllers();
1267
1268        // If not explicitly specified this view is important for accessibility.
1269        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1270            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1271        }
1272    }
1273
1274    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1275        Typeface tf = null;
1276        if (familyName != null) {
1277            tf = Typeface.create(familyName, styleIndex);
1278            if (tf != null) {
1279                setTypeface(tf);
1280                return;
1281            }
1282        }
1283        switch (typefaceIndex) {
1284            case SANS:
1285                tf = Typeface.SANS_SERIF;
1286                break;
1287
1288            case SERIF:
1289                tf = Typeface.SERIF;
1290                break;
1291
1292            case MONOSPACE:
1293                tf = Typeface.MONOSPACE;
1294                break;
1295        }
1296
1297        setTypeface(tf, styleIndex);
1298    }
1299
1300    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1301        boolean hasRelativeDrawables = (start != null) || (end != null);
1302        if (hasRelativeDrawables) {
1303            Drawables dr = mDrawables;
1304            if (dr == null) {
1305                mDrawables = dr = new Drawables();
1306            }
1307            final Rect compoundRect = dr.mCompoundRect;
1308            int[] state = getDrawableState();
1309            if (start != null) {
1310                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1311                start.setState(state);
1312                start.copyBounds(compoundRect);
1313                start.setCallback(this);
1314
1315                dr.mDrawableStart = start;
1316                dr.mDrawableSizeStart = compoundRect.width();
1317                dr.mDrawableHeightStart = compoundRect.height();
1318            } else {
1319                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1320            }
1321            if (end != null) {
1322                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1323                end.setState(state);
1324                end.copyBounds(compoundRect);
1325                end.setCallback(this);
1326
1327                dr.mDrawableEnd = end;
1328                dr.mDrawableSizeEnd = compoundRect.width();
1329                dr.mDrawableHeightEnd = compoundRect.height();
1330            } else {
1331                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1332            }
1333        }
1334    }
1335
1336    @Override
1337    public void setEnabled(boolean enabled) {
1338        if (enabled == isEnabled()) {
1339            return;
1340        }
1341
1342        if (!enabled) {
1343            // Hide the soft input if the currently active TextView is disabled
1344            InputMethodManager imm = InputMethodManager.peekInstance();
1345            if (imm != null && imm.isActive(this)) {
1346                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1347            }
1348        }
1349
1350        super.setEnabled(enabled);
1351
1352        if (enabled) {
1353            // Make sure IME is updated with current editor info.
1354            InputMethodManager imm = InputMethodManager.peekInstance();
1355            if (imm != null) imm.restartInput(this);
1356        }
1357
1358        // Will change text color
1359        if (mEditor != null) {
1360            mEditor.invalidateTextDisplayList();
1361            mEditor.prepareCursorControllers();
1362
1363            // start or stop the cursor blinking as appropriate
1364            mEditor.makeBlink();
1365        }
1366    }
1367
1368    /**
1369     * Sets the typeface and style in which the text should be displayed,
1370     * and turns on the fake bold and italic bits in the Paint if the
1371     * Typeface that you provided does not have all the bits in the
1372     * style that you specified.
1373     *
1374     * @attr ref android.R.styleable#TextView_typeface
1375     * @attr ref android.R.styleable#TextView_textStyle
1376     */
1377    public void setTypeface(Typeface tf, int style) {
1378        if (style > 0) {
1379            if (tf == null) {
1380                tf = Typeface.defaultFromStyle(style);
1381            } else {
1382                tf = Typeface.create(tf, style);
1383            }
1384
1385            setTypeface(tf);
1386            // now compute what (if any) algorithmic styling is needed
1387            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1388            int need = style & ~typefaceStyle;
1389            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1390            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1391        } else {
1392            mTextPaint.setFakeBoldText(false);
1393            mTextPaint.setTextSkewX(0);
1394            setTypeface(tf);
1395        }
1396    }
1397
1398    /**
1399     * Subclasses override this to specify that they have a KeyListener
1400     * by default even if not specifically called for in the XML options.
1401     */
1402    protected boolean getDefaultEditable() {
1403        return false;
1404    }
1405
1406    /**
1407     * Subclasses override this to specify a default movement method.
1408     */
1409    protected MovementMethod getDefaultMovementMethod() {
1410        return null;
1411    }
1412
1413    /**
1414     * Return the text the TextView is displaying. If setText() was called with
1415     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1416     * the return value from this method to Spannable or Editable, respectively.
1417     *
1418     * Note: The content of the return value should not be modified. If you want
1419     * a modifiable one, you should make your own copy first.
1420     *
1421     * @attr ref android.R.styleable#TextView_text
1422     */
1423    @ViewDebug.CapturedViewProperty
1424    public CharSequence getText() {
1425        return mText;
1426    }
1427
1428    /**
1429     * Returns the length, in characters, of the text managed by this TextView
1430     */
1431    public int length() {
1432        return mText.length();
1433    }
1434
1435    /**
1436     * Return the text the TextView is displaying as an Editable object.  If
1437     * the text is not editable, null is returned.
1438     *
1439     * @see #getText
1440     */
1441    public Editable getEditableText() {
1442        return (mText instanceof Editable) ? (Editable)mText : null;
1443    }
1444
1445    /**
1446     * @return the height of one standard line in pixels.  Note that markup
1447     * within the text can cause individual lines to be taller or shorter
1448     * than this height, and the layout may contain additional first-
1449     * or last-line padding.
1450     */
1451    public int getLineHeight() {
1452        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1453    }
1454
1455    /**
1456     * @return the Layout that is currently being used to display the text.
1457     * This can be null if the text or width has recently changes.
1458     */
1459    public final Layout getLayout() {
1460        return mLayout;
1461    }
1462
1463    /**
1464     * @return the Layout that is currently being used to display the hint text.
1465     * This can be null.
1466     */
1467    final Layout getHintLayout() {
1468        return mHintLayout;
1469    }
1470
1471    /**
1472     * @return the current key listener for this TextView.
1473     * This will frequently be null for non-EditText TextViews.
1474     *
1475     * @attr ref android.R.styleable#TextView_numeric
1476     * @attr ref android.R.styleable#TextView_digits
1477     * @attr ref android.R.styleable#TextView_phoneNumber
1478     * @attr ref android.R.styleable#TextView_inputMethod
1479     * @attr ref android.R.styleable#TextView_capitalize
1480     * @attr ref android.R.styleable#TextView_autoText
1481     */
1482    public final KeyListener getKeyListener() {
1483        return mEditor == null ? null : mEditor.mKeyListener;
1484    }
1485
1486    /**
1487     * Sets the key listener to be used with this TextView.  This can be null
1488     * to disallow user input.  Note that this method has significant and
1489     * subtle interactions with soft keyboards and other input method:
1490     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1491     * for important details.  Calling this method will replace the current
1492     * content type of the text view with the content type returned by the
1493     * key listener.
1494     * <p>
1495     * Be warned that if you want a TextView with a key listener or movement
1496     * method not to be focusable, or if you want a TextView without a
1497     * key listener or movement method to be focusable, you must call
1498     * {@link #setFocusable} again after calling this to get the focusability
1499     * back the way you want it.
1500     *
1501     * @attr ref android.R.styleable#TextView_numeric
1502     * @attr ref android.R.styleable#TextView_digits
1503     * @attr ref android.R.styleable#TextView_phoneNumber
1504     * @attr ref android.R.styleable#TextView_inputMethod
1505     * @attr ref android.R.styleable#TextView_capitalize
1506     * @attr ref android.R.styleable#TextView_autoText
1507     */
1508    public void setKeyListener(KeyListener input) {
1509        setKeyListenerOnly(input);
1510        fixFocusableAndClickableSettings();
1511
1512        if (input != null) {
1513            createEditorIfNeeded();
1514            try {
1515                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1516            } catch (IncompatibleClassChangeError e) {
1517                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1518            }
1519            // Change inputType, without affecting transformation.
1520            // No need to applySingleLine since mSingleLine is unchanged.
1521            setInputTypeSingleLine(mSingleLine);
1522        } else {
1523            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1524        }
1525
1526        InputMethodManager imm = InputMethodManager.peekInstance();
1527        if (imm != null) imm.restartInput(this);
1528    }
1529
1530    private void setKeyListenerOnly(KeyListener input) {
1531        if (mEditor == null && input == null) return; // null is the default value
1532
1533        createEditorIfNeeded();
1534        if (mEditor.mKeyListener != input) {
1535            mEditor.mKeyListener = input;
1536            if (input != null && !(mText instanceof Editable)) {
1537                setText(mText);
1538            }
1539
1540            setFilters((Editable) mText, mFilters);
1541        }
1542    }
1543
1544    /**
1545     * @return the movement method being used for this TextView.
1546     * This will frequently be null for non-EditText TextViews.
1547     */
1548    public final MovementMethod getMovementMethod() {
1549        return mMovement;
1550    }
1551
1552    /**
1553     * Sets the movement method (arrow key handler) to be used for
1554     * this TextView.  This can be null to disallow using the arrow keys
1555     * to move the cursor or scroll the view.
1556     * <p>
1557     * Be warned that if you want a TextView with a key listener or movement
1558     * method not to be focusable, or if you want a TextView without a
1559     * key listener or movement method to be focusable, you must call
1560     * {@link #setFocusable} again after calling this to get the focusability
1561     * back the way you want it.
1562     */
1563    public final void setMovementMethod(MovementMethod movement) {
1564        if (mMovement != movement) {
1565            mMovement = movement;
1566
1567            if (movement != null && !(mText instanceof Spannable)) {
1568                setText(mText);
1569            }
1570
1571            fixFocusableAndClickableSettings();
1572
1573            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1574            // mMovement
1575            if (mEditor != null) mEditor.prepareCursorControllers();
1576        }
1577    }
1578
1579    private void fixFocusableAndClickableSettings() {
1580        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1581            setFocusable(true);
1582            setClickable(true);
1583            setLongClickable(true);
1584        } else {
1585            setFocusable(false);
1586            setClickable(false);
1587            setLongClickable(false);
1588        }
1589    }
1590
1591    /**
1592     * @return the current transformation method for this TextView.
1593     * This will frequently be null except for single-line and password
1594     * fields.
1595     *
1596     * @attr ref android.R.styleable#TextView_password
1597     * @attr ref android.R.styleable#TextView_singleLine
1598     */
1599    public final TransformationMethod getTransformationMethod() {
1600        return mTransformation;
1601    }
1602
1603    /**
1604     * Sets the transformation that is applied to the text that this
1605     * TextView is displaying.
1606     *
1607     * @attr ref android.R.styleable#TextView_password
1608     * @attr ref android.R.styleable#TextView_singleLine
1609     */
1610    public final void setTransformationMethod(TransformationMethod method) {
1611        if (method == mTransformation) {
1612            // Avoid the setText() below if the transformation is
1613            // the same.
1614            return;
1615        }
1616        if (mTransformation != null) {
1617            if (mText instanceof Spannable) {
1618                ((Spannable) mText).removeSpan(mTransformation);
1619            }
1620        }
1621
1622        mTransformation = method;
1623
1624        if (method instanceof TransformationMethod2) {
1625            TransformationMethod2 method2 = (TransformationMethod2) method;
1626            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1627            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1628        } else {
1629            mAllowTransformationLengthChange = false;
1630        }
1631
1632        setText(mText);
1633
1634        if (hasPasswordTransformationMethod()) {
1635            notifyAccessibilityStateChanged();
1636        }
1637    }
1638
1639    /**
1640     * Returns the top padding of the view, plus space for the top
1641     * Drawable if any.
1642     */
1643    public int getCompoundPaddingTop() {
1644        final Drawables dr = mDrawables;
1645        if (dr == null || dr.mDrawableTop == null) {
1646            return mPaddingTop;
1647        } else {
1648            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1649        }
1650    }
1651
1652    /**
1653     * Returns the bottom padding of the view, plus space for the bottom
1654     * Drawable if any.
1655     */
1656    public int getCompoundPaddingBottom() {
1657        final Drawables dr = mDrawables;
1658        if (dr == null || dr.mDrawableBottom == null) {
1659            return mPaddingBottom;
1660        } else {
1661            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1662        }
1663    }
1664
1665    /**
1666     * Returns the left padding of the view, plus space for the left
1667     * Drawable if any.
1668     */
1669    public int getCompoundPaddingLeft() {
1670        final Drawables dr = mDrawables;
1671        if (dr == null || dr.mDrawableLeft == null) {
1672            return mPaddingLeft;
1673        } else {
1674            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1675        }
1676    }
1677
1678    /**
1679     * Returns the right padding of the view, plus space for the right
1680     * Drawable if any.
1681     */
1682    public int getCompoundPaddingRight() {
1683        final Drawables dr = mDrawables;
1684        if (dr == null || dr.mDrawableRight == null) {
1685            return mPaddingRight;
1686        } else {
1687            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1688        }
1689    }
1690
1691    /**
1692     * Returns the start padding of the view, plus space for the start
1693     * Drawable if any.
1694     */
1695    public int getCompoundPaddingStart() {
1696        resolveDrawables();
1697        switch(getLayoutDirection()) {
1698            default:
1699            case LAYOUT_DIRECTION_LTR:
1700                return getCompoundPaddingLeft();
1701            case LAYOUT_DIRECTION_RTL:
1702                return getCompoundPaddingRight();
1703        }
1704    }
1705
1706    /**
1707     * Returns the end padding of the view, plus space for the end
1708     * Drawable if any.
1709     */
1710    public int getCompoundPaddingEnd() {
1711        resolveDrawables();
1712        switch(getLayoutDirection()) {
1713            default:
1714            case LAYOUT_DIRECTION_LTR:
1715                return getCompoundPaddingRight();
1716            case LAYOUT_DIRECTION_RTL:
1717                return getCompoundPaddingLeft();
1718        }
1719    }
1720
1721    /**
1722     * Returns the extended top padding of the view, including both the
1723     * top Drawable if any and any extra space to keep more than maxLines
1724     * of text from showing.  It is only valid to call this after measuring.
1725     */
1726    public int getExtendedPaddingTop() {
1727        if (mMaxMode != LINES) {
1728            return getCompoundPaddingTop();
1729        }
1730
1731        if (mLayout.getLineCount() <= mMaximum) {
1732            return getCompoundPaddingTop();
1733        }
1734
1735        int top = getCompoundPaddingTop();
1736        int bottom = getCompoundPaddingBottom();
1737        int viewht = getHeight() - top - bottom;
1738        int layoutht = mLayout.getLineTop(mMaximum);
1739
1740        if (layoutht >= viewht) {
1741            return top;
1742        }
1743
1744        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1745        if (gravity == Gravity.TOP) {
1746            return top;
1747        } else if (gravity == Gravity.BOTTOM) {
1748            return top + viewht - layoutht;
1749        } else { // (gravity == Gravity.CENTER_VERTICAL)
1750            return top + (viewht - layoutht) / 2;
1751        }
1752    }
1753
1754    /**
1755     * Returns the extended bottom padding of the view, including both the
1756     * bottom Drawable if any and any extra space to keep more than maxLines
1757     * of text from showing.  It is only valid to call this after measuring.
1758     */
1759    public int getExtendedPaddingBottom() {
1760        if (mMaxMode != LINES) {
1761            return getCompoundPaddingBottom();
1762        }
1763
1764        if (mLayout.getLineCount() <= mMaximum) {
1765            return getCompoundPaddingBottom();
1766        }
1767
1768        int top = getCompoundPaddingTop();
1769        int bottom = getCompoundPaddingBottom();
1770        int viewht = getHeight() - top - bottom;
1771        int layoutht = mLayout.getLineTop(mMaximum);
1772
1773        if (layoutht >= viewht) {
1774            return bottom;
1775        }
1776
1777        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1778        if (gravity == Gravity.TOP) {
1779            return bottom + viewht - layoutht;
1780        } else if (gravity == Gravity.BOTTOM) {
1781            return bottom;
1782        } else { // (gravity == Gravity.CENTER_VERTICAL)
1783            return bottom + (viewht - layoutht) / 2;
1784        }
1785    }
1786
1787    /**
1788     * Returns the total left padding of the view, including the left
1789     * Drawable if any.
1790     */
1791    public int getTotalPaddingLeft() {
1792        return getCompoundPaddingLeft();
1793    }
1794
1795    /**
1796     * Returns the total right padding of the view, including the right
1797     * Drawable if any.
1798     */
1799    public int getTotalPaddingRight() {
1800        return getCompoundPaddingRight();
1801    }
1802
1803    /**
1804     * Returns the total start padding of the view, including the start
1805     * Drawable if any.
1806     */
1807    public int getTotalPaddingStart() {
1808        return getCompoundPaddingStart();
1809    }
1810
1811    /**
1812     * Returns the total end padding of the view, including the end
1813     * Drawable if any.
1814     */
1815    public int getTotalPaddingEnd() {
1816        return getCompoundPaddingEnd();
1817    }
1818
1819    /**
1820     * Returns the total top padding of the view, including the top
1821     * Drawable if any, the extra space to keep more than maxLines
1822     * from showing, and the vertical offset for gravity, if any.
1823     */
1824    public int getTotalPaddingTop() {
1825        return getExtendedPaddingTop() + getVerticalOffset(true);
1826    }
1827
1828    /**
1829     * Returns the total bottom padding of the view, including the bottom
1830     * Drawable if any, the extra space to keep more than maxLines
1831     * from showing, and the vertical offset for gravity, if any.
1832     */
1833    public int getTotalPaddingBottom() {
1834        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1835    }
1836
1837    /**
1838     * Sets the Drawables (if any) to appear to the left of, above,
1839     * to the right of, and below the text.  Use null if you do not
1840     * want a Drawable there.  The Drawables must already have had
1841     * {@link Drawable#setBounds} called.
1842     *
1843     * @attr ref android.R.styleable#TextView_drawableLeft
1844     * @attr ref android.R.styleable#TextView_drawableTop
1845     * @attr ref android.R.styleable#TextView_drawableRight
1846     * @attr ref android.R.styleable#TextView_drawableBottom
1847     */
1848    public void setCompoundDrawables(Drawable left, Drawable top,
1849                                     Drawable right, Drawable bottom) {
1850        Drawables dr = mDrawables;
1851
1852        final boolean drawables = left != null || top != null
1853                || right != null || bottom != null;
1854
1855        if (!drawables) {
1856            // Clearing drawables...  can we free the data structure?
1857            if (dr != null) {
1858                if (dr.mDrawablePadding == 0) {
1859                    mDrawables = null;
1860                } else {
1861                    // We need to retain the last set padding, so just clear
1862                    // out all of the fields in the existing structure.
1863                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
1864                    dr.mDrawableLeft = null;
1865                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1866                    dr.mDrawableTop = null;
1867                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
1868                    dr.mDrawableRight = null;
1869                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1870                    dr.mDrawableBottom = null;
1871                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1872                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1873                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1874                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1875                }
1876            }
1877        } else {
1878            if (dr == null) {
1879                mDrawables = dr = new Drawables();
1880            }
1881
1882            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
1883                dr.mDrawableLeft.setCallback(null);
1884            }
1885            dr.mDrawableLeft = left;
1886
1887            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1888                dr.mDrawableTop.setCallback(null);
1889            }
1890            dr.mDrawableTop = top;
1891
1892            if (dr.mDrawableRight != right && dr.mDrawableRight != null) {
1893                dr.mDrawableRight.setCallback(null);
1894            }
1895            dr.mDrawableRight = right;
1896
1897            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1898                dr.mDrawableBottom.setCallback(null);
1899            }
1900            dr.mDrawableBottom = bottom;
1901
1902            final Rect compoundRect = dr.mCompoundRect;
1903            int[] state;
1904
1905            state = getDrawableState();
1906
1907            if (left != null) {
1908                left.setState(state);
1909                left.copyBounds(compoundRect);
1910                left.setCallback(this);
1911                dr.mDrawableSizeLeft = compoundRect.width();
1912                dr.mDrawableHeightLeft = compoundRect.height();
1913            } else {
1914                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1915            }
1916
1917            if (right != null) {
1918                right.setState(state);
1919                right.copyBounds(compoundRect);
1920                right.setCallback(this);
1921                dr.mDrawableSizeRight = compoundRect.width();
1922                dr.mDrawableHeightRight = compoundRect.height();
1923            } else {
1924                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1925            }
1926
1927            if (top != null) {
1928                top.setState(state);
1929                top.copyBounds(compoundRect);
1930                top.setCallback(this);
1931                dr.mDrawableSizeTop = compoundRect.height();
1932                dr.mDrawableWidthTop = compoundRect.width();
1933            } else {
1934                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1935            }
1936
1937            if (bottom != null) {
1938                bottom.setState(state);
1939                bottom.copyBounds(compoundRect);
1940                bottom.setCallback(this);
1941                dr.mDrawableSizeBottom = compoundRect.height();
1942                dr.mDrawableWidthBottom = compoundRect.width();
1943            } else {
1944                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1945            }
1946        }
1947
1948        invalidate();
1949        requestLayout();
1950    }
1951
1952    /**
1953     * Sets the Drawables (if any) to appear to the left of, above,
1954     * to the right of, and below the text.  Use 0 if you do not
1955     * want a Drawable there. The Drawables' bounds will be set to
1956     * their intrinsic bounds.
1957     *
1958     * @param left Resource identifier of the left Drawable.
1959     * @param top Resource identifier of the top Drawable.
1960     * @param right Resource identifier of the right Drawable.
1961     * @param bottom Resource identifier of the bottom Drawable.
1962     *
1963     * @attr ref android.R.styleable#TextView_drawableLeft
1964     * @attr ref android.R.styleable#TextView_drawableTop
1965     * @attr ref android.R.styleable#TextView_drawableRight
1966     * @attr ref android.R.styleable#TextView_drawableBottom
1967     */
1968    @android.view.RemotableViewMethod
1969    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1970        final Resources resources = getContext().getResources();
1971        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null,
1972                top != 0 ? resources.getDrawable(top) : null,
1973                right != 0 ? resources.getDrawable(right) : null,
1974                bottom != 0 ? resources.getDrawable(bottom) : null);
1975    }
1976
1977    /**
1978     * Sets the Drawables (if any) to appear to the left of, above,
1979     * to the right of, and below the text.  Use null if you do not
1980     * want a Drawable there. The Drawables' bounds will be set to
1981     * their intrinsic bounds.
1982     *
1983     * @attr ref android.R.styleable#TextView_drawableLeft
1984     * @attr ref android.R.styleable#TextView_drawableTop
1985     * @attr ref android.R.styleable#TextView_drawableRight
1986     * @attr ref android.R.styleable#TextView_drawableBottom
1987     */
1988    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1989            Drawable right, Drawable bottom) {
1990
1991        if (left != null) {
1992            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1993        }
1994        if (right != null) {
1995            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1996        }
1997        if (top != null) {
1998            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1999        }
2000        if (bottom != null) {
2001            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2002        }
2003        setCompoundDrawables(left, top, right, bottom);
2004    }
2005
2006    /**
2007     * Sets the Drawables (if any) to appear to the start of, above,
2008     * to the end of, and below the text.  Use null if you do not
2009     * want a Drawable there.  The Drawables must already have had
2010     * {@link Drawable#setBounds} called.
2011     *
2012     * @attr ref android.R.styleable#TextView_drawableStart
2013     * @attr ref android.R.styleable#TextView_drawableTop
2014     * @attr ref android.R.styleable#TextView_drawableEnd
2015     * @attr ref android.R.styleable#TextView_drawableBottom
2016     */
2017    public void setCompoundDrawablesRelative(Drawable start, Drawable top,
2018                                     Drawable end, Drawable bottom) {
2019        Drawables dr = mDrawables;
2020
2021        final boolean drawables = start != null || top != null
2022                || end != null || bottom != null;
2023
2024        if (!drawables) {
2025            // Clearing drawables...  can we free the data structure?
2026            if (dr != null) {
2027                if (dr.mDrawablePadding == 0) {
2028                    mDrawables = null;
2029                } else {
2030                    // We need to retain the last set padding, so just clear
2031                    // out all of the fields in the existing structure.
2032                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2033                    dr.mDrawableStart = null;
2034                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
2035                    dr.mDrawableTop = null;
2036                    if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2037                    dr.mDrawableEnd = null;
2038                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
2039                    dr.mDrawableBottom = null;
2040                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2041                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2042                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2043                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2044                }
2045            }
2046        } else {
2047            if (dr == null) {
2048                mDrawables = dr = new Drawables();
2049            }
2050
2051            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
2052                dr.mDrawableStart.setCallback(null);
2053            }
2054            dr.mDrawableStart = start;
2055
2056            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
2057                dr.mDrawableTop.setCallback(null);
2058            }
2059            dr.mDrawableTop = top;
2060
2061            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
2062                dr.mDrawableEnd.setCallback(null);
2063            }
2064            dr.mDrawableEnd = end;
2065
2066            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
2067                dr.mDrawableBottom.setCallback(null);
2068            }
2069            dr.mDrawableBottom = bottom;
2070
2071            final Rect compoundRect = dr.mCompoundRect;
2072            int[] state;
2073
2074            state = getDrawableState();
2075
2076            if (start != null) {
2077                start.setState(state);
2078                start.copyBounds(compoundRect);
2079                start.setCallback(this);
2080                dr.mDrawableSizeStart = compoundRect.width();
2081                dr.mDrawableHeightStart = compoundRect.height();
2082            } else {
2083                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2084            }
2085
2086            if (end != null) {
2087                end.setState(state);
2088                end.copyBounds(compoundRect);
2089                end.setCallback(this);
2090                dr.mDrawableSizeEnd = compoundRect.width();
2091                dr.mDrawableHeightEnd = compoundRect.height();
2092            } else {
2093                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2094            }
2095
2096            if (top != null) {
2097                top.setState(state);
2098                top.copyBounds(compoundRect);
2099                top.setCallback(this);
2100                dr.mDrawableSizeTop = compoundRect.height();
2101                dr.mDrawableWidthTop = compoundRect.width();
2102            } else {
2103                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2104            }
2105
2106            if (bottom != null) {
2107                bottom.setState(state);
2108                bottom.copyBounds(compoundRect);
2109                bottom.setCallback(this);
2110                dr.mDrawableSizeBottom = compoundRect.height();
2111                dr.mDrawableWidthBottom = compoundRect.width();
2112            } else {
2113                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2114            }
2115        }
2116
2117        resolveDrawables();
2118        invalidate();
2119        requestLayout();
2120    }
2121
2122    /**
2123     * Sets the Drawables (if any) to appear to the start of, above,
2124     * to the end of, and below the text.  Use 0 if you do not
2125     * want a Drawable there. The Drawables' bounds will be set to
2126     * their intrinsic bounds.
2127     *
2128     * @param start Resource identifier of the start Drawable.
2129     * @param top Resource identifier of the top Drawable.
2130     * @param end Resource identifier of the end Drawable.
2131     * @param bottom Resource identifier of the bottom Drawable.
2132     *
2133     * @attr ref android.R.styleable#TextView_drawableStart
2134     * @attr ref android.R.styleable#TextView_drawableTop
2135     * @attr ref android.R.styleable#TextView_drawableEnd
2136     * @attr ref android.R.styleable#TextView_drawableBottom
2137     */
2138    @android.view.RemotableViewMethod
2139    public void setCompoundDrawablesRelativeWithIntrinsicBounds(int start, int top, int end,
2140            int bottom) {
2141        resetResolvedDrawables();
2142        final Resources resources = getContext().getResources();
2143        setCompoundDrawablesRelativeWithIntrinsicBounds(
2144                start != 0 ? resources.getDrawable(start) : null,
2145                top != 0 ? resources.getDrawable(top) : null,
2146                end != 0 ? resources.getDrawable(end) : null,
2147                bottom != 0 ? resources.getDrawable(bottom) : null);
2148    }
2149
2150    /**
2151     * Sets the Drawables (if any) to appear to the start of, above,
2152     * to the end of, and below the text.  Use null if you do not
2153     * want a Drawable there. The Drawables' bounds will be set to
2154     * their intrinsic bounds.
2155     *
2156     * @attr ref android.R.styleable#TextView_drawableStart
2157     * @attr ref android.R.styleable#TextView_drawableTop
2158     * @attr ref android.R.styleable#TextView_drawableEnd
2159     * @attr ref android.R.styleable#TextView_drawableBottom
2160     */
2161    public void setCompoundDrawablesRelativeWithIntrinsicBounds(Drawable start, Drawable top,
2162            Drawable end, Drawable bottom) {
2163
2164        resetResolvedDrawables();
2165        if (start != null) {
2166            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2167        }
2168        if (end != null) {
2169            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2170        }
2171        if (top != null) {
2172            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2173        }
2174        if (bottom != null) {
2175            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2176        }
2177        setCompoundDrawablesRelative(start, top, end, bottom);
2178    }
2179
2180    /**
2181     * Returns drawables for the left, top, right, and bottom borders.
2182     *
2183     * @attr ref android.R.styleable#TextView_drawableLeft
2184     * @attr ref android.R.styleable#TextView_drawableTop
2185     * @attr ref android.R.styleable#TextView_drawableRight
2186     * @attr ref android.R.styleable#TextView_drawableBottom
2187     */
2188    public Drawable[] getCompoundDrawables() {
2189        final Drawables dr = mDrawables;
2190        if (dr != null) {
2191            return new Drawable[] {
2192                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
2193            };
2194        } else {
2195            return new Drawable[] { null, null, null, null };
2196        }
2197    }
2198
2199    /**
2200     * Returns drawables for the start, top, end, and bottom borders.
2201     *
2202     * @attr ref android.R.styleable#TextView_drawableStart
2203     * @attr ref android.R.styleable#TextView_drawableTop
2204     * @attr ref android.R.styleable#TextView_drawableEnd
2205     * @attr ref android.R.styleable#TextView_drawableBottom
2206     */
2207    public Drawable[] getCompoundDrawablesRelative() {
2208        final Drawables dr = mDrawables;
2209        if (dr != null) {
2210            return new Drawable[] {
2211                dr.mDrawableStart, dr.mDrawableTop, dr.mDrawableEnd, dr.mDrawableBottom
2212            };
2213        } else {
2214            return new Drawable[] { null, null, null, null };
2215        }
2216    }
2217
2218    /**
2219     * Sets the size of the padding between the compound drawables and
2220     * the text.
2221     *
2222     * @attr ref android.R.styleable#TextView_drawablePadding
2223     */
2224    @android.view.RemotableViewMethod
2225    public void setCompoundDrawablePadding(int pad) {
2226        Drawables dr = mDrawables;
2227        if (pad == 0) {
2228            if (dr != null) {
2229                dr.mDrawablePadding = pad;
2230            }
2231        } else {
2232            if (dr == null) {
2233                mDrawables = dr = new Drawables();
2234            }
2235            dr.mDrawablePadding = pad;
2236        }
2237
2238        invalidate();
2239        requestLayout();
2240    }
2241
2242    /**
2243     * Returns the padding between the compound drawables and the text.
2244     *
2245     * @attr ref android.R.styleable#TextView_drawablePadding
2246     */
2247    public int getCompoundDrawablePadding() {
2248        final Drawables dr = mDrawables;
2249        return dr != null ? dr.mDrawablePadding : 0;
2250    }
2251
2252    @Override
2253    public void setPadding(int left, int top, int right, int bottom) {
2254        if (left != mPaddingLeft ||
2255            right != mPaddingRight ||
2256            top != mPaddingTop ||
2257            bottom != mPaddingBottom) {
2258            nullLayouts();
2259        }
2260
2261        // the super call will requestLayout()
2262        super.setPadding(left, top, right, bottom);
2263        invalidate();
2264    }
2265
2266    @Override
2267    public void setPaddingRelative(int start, int top, int end, int bottom) {
2268        if (start != getPaddingStart() ||
2269            end != getPaddingEnd() ||
2270            top != mPaddingTop ||
2271            bottom != mPaddingBottom) {
2272            nullLayouts();
2273        }
2274
2275        // the super call will requestLayout()
2276        super.setPaddingRelative(start, top, end, bottom);
2277        invalidate();
2278    }
2279
2280    /**
2281     * Gets the autolink mask of the text.  See {@link
2282     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2283     * possible values.
2284     *
2285     * @attr ref android.R.styleable#TextView_autoLink
2286     */
2287    public final int getAutoLinkMask() {
2288        return mAutoLinkMask;
2289    }
2290
2291    /**
2292     * Sets the text color, size, style, hint color, and highlight color
2293     * from the specified TextAppearance resource.
2294     */
2295    public void setTextAppearance(Context context, int resid) {
2296        TypedArray appearance =
2297            context.obtainStyledAttributes(resid,
2298                                           com.android.internal.R.styleable.TextAppearance);
2299
2300        int color;
2301        ColorStateList colors;
2302        int ts;
2303
2304        color = appearance.getColor(
2305                com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
2306        if (color != 0) {
2307            setHighlightColor(color);
2308        }
2309
2310        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2311                                              TextAppearance_textColor);
2312        if (colors != null) {
2313            setTextColor(colors);
2314        }
2315
2316        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
2317                                              TextAppearance_textSize, 0);
2318        if (ts != 0) {
2319            setRawTextSize(ts);
2320        }
2321
2322        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2323                                              TextAppearance_textColorHint);
2324        if (colors != null) {
2325            setHintTextColor(colors);
2326        }
2327
2328        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2329                                              TextAppearance_textColorLink);
2330        if (colors != null) {
2331            setLinkTextColor(colors);
2332        }
2333
2334        String familyName;
2335        int typefaceIndex, styleIndex;
2336
2337        familyName = appearance.getString(com.android.internal.R.styleable.
2338                                          TextAppearance_fontFamily);
2339        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
2340                                          TextAppearance_typeface, -1);
2341        styleIndex = appearance.getInt(com.android.internal.R.styleable.
2342                                       TextAppearance_textStyle, -1);
2343
2344        setTypefaceFromAttrs(familyName, typefaceIndex, styleIndex);
2345
2346        final int shadowcolor = appearance.getInt(
2347                com.android.internal.R.styleable.TextAppearance_shadowColor, 0);
2348        if (shadowcolor != 0) {
2349            final float dx = appearance.getFloat(
2350                    com.android.internal.R.styleable.TextAppearance_shadowDx, 0);
2351            final float dy = appearance.getFloat(
2352                    com.android.internal.R.styleable.TextAppearance_shadowDy, 0);
2353            final float r = appearance.getFloat(
2354                    com.android.internal.R.styleable.TextAppearance_shadowRadius, 0);
2355
2356            setShadowLayer(r, dx, dy, shadowcolor);
2357        }
2358
2359        if (appearance.getBoolean(com.android.internal.R.styleable.TextAppearance_textAllCaps,
2360                false)) {
2361            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2362        }
2363
2364        appearance.recycle();
2365    }
2366
2367    /**
2368     * Get the default {@link Locale} of the text in this TextView.
2369     * @return the default {@link Locale} of the text in this TextView.
2370     */
2371    public Locale getTextLocale() {
2372        return mTextPaint.getTextLocale();
2373    }
2374
2375    /**
2376     * Set the default {@link Locale} of the text in this TextView to the given value. This value
2377     * is used to choose appropriate typefaces for ambiguous characters. Typically used for CJK
2378     * locales to disambiguate Hanzi/Kanji/Hanja characters.
2379     *
2380     * @param locale the {@link Locale} for drawing text, must not be null.
2381     *
2382     * @see Paint#setTextLocale
2383     */
2384    public void setTextLocale(Locale locale) {
2385        mTextPaint.setTextLocale(locale);
2386    }
2387
2388    /**
2389     * @return the size (in pixels) of the default text size in this TextView.
2390     */
2391    @ViewDebug.ExportedProperty(category = "text")
2392    public float getTextSize() {
2393        return mTextPaint.getTextSize();
2394    }
2395
2396    /**
2397     * Set the default text size to the given value, interpreted as "scaled
2398     * pixel" units.  This size is adjusted based on the current density and
2399     * user font size preference.
2400     *
2401     * @param size The scaled pixel size.
2402     *
2403     * @attr ref android.R.styleable#TextView_textSize
2404     */
2405    @android.view.RemotableViewMethod
2406    public void setTextSize(float size) {
2407        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2408    }
2409
2410    /**
2411     * Set the default text size to a given unit and value.  See {@link
2412     * TypedValue} for the possible dimension units.
2413     *
2414     * @param unit The desired dimension unit.
2415     * @param size The desired size in the given units.
2416     *
2417     * @attr ref android.R.styleable#TextView_textSize
2418     */
2419    public void setTextSize(int unit, float size) {
2420        Context c = getContext();
2421        Resources r;
2422
2423        if (c == null)
2424            r = Resources.getSystem();
2425        else
2426            r = c.getResources();
2427
2428        setRawTextSize(TypedValue.applyDimension(
2429            unit, size, r.getDisplayMetrics()));
2430    }
2431
2432    private void setRawTextSize(float size) {
2433        if (size != mTextPaint.getTextSize()) {
2434            mTextPaint.setTextSize(size);
2435
2436            if (mLayout != null) {
2437                nullLayouts();
2438                requestLayout();
2439                invalidate();
2440            }
2441        }
2442    }
2443
2444    /**
2445     * @return the extent by which text is currently being stretched
2446     * horizontally.  This will usually be 1.
2447     */
2448    public float getTextScaleX() {
2449        return mTextPaint.getTextScaleX();
2450    }
2451
2452    /**
2453     * Sets the extent by which text should be stretched horizontally.
2454     *
2455     * @attr ref android.R.styleable#TextView_textScaleX
2456     */
2457    @android.view.RemotableViewMethod
2458    public void setTextScaleX(float size) {
2459        if (size != mTextPaint.getTextScaleX()) {
2460            mUserSetTextScaleX = true;
2461            mTextPaint.setTextScaleX(size);
2462
2463            if (mLayout != null) {
2464                nullLayouts();
2465                requestLayout();
2466                invalidate();
2467            }
2468        }
2469    }
2470
2471    /**
2472     * Sets the typeface and style in which the text should be displayed.
2473     * Note that not all Typeface families actually have bold and italic
2474     * variants, so you may need to use
2475     * {@link #setTypeface(Typeface, int)} to get the appearance
2476     * that you actually want.
2477     *
2478     * @see #getTypeface()
2479     *
2480     * @attr ref android.R.styleable#TextView_fontFamily
2481     * @attr ref android.R.styleable#TextView_typeface
2482     * @attr ref android.R.styleable#TextView_textStyle
2483     */
2484    public void setTypeface(Typeface tf) {
2485        if (mTextPaint.getTypeface() != tf) {
2486            mTextPaint.setTypeface(tf);
2487
2488            if (mLayout != null) {
2489                nullLayouts();
2490                requestLayout();
2491                invalidate();
2492            }
2493        }
2494    }
2495
2496    /**
2497     * @return the current typeface and style in which the text is being
2498     * displayed.
2499     *
2500     * @see #setTypeface(Typeface)
2501     *
2502     * @attr ref android.R.styleable#TextView_fontFamily
2503     * @attr ref android.R.styleable#TextView_typeface
2504     * @attr ref android.R.styleable#TextView_textStyle
2505     */
2506    public Typeface getTypeface() {
2507        return mTextPaint.getTypeface();
2508    }
2509
2510    /**
2511     * Sets the text color for all the states (normal, selected,
2512     * focused) to be this color.
2513     *
2514     * @see #setTextColor(ColorStateList)
2515     * @see #getTextColors()
2516     *
2517     * @attr ref android.R.styleable#TextView_textColor
2518     */
2519    @android.view.RemotableViewMethod
2520    public void setTextColor(int color) {
2521        mTextColor = ColorStateList.valueOf(color);
2522        updateTextColors();
2523    }
2524
2525    /**
2526     * Sets the text color.
2527     *
2528     * @see #setTextColor(int)
2529     * @see #getTextColors()
2530     * @see #setHintTextColor(ColorStateList)
2531     * @see #setLinkTextColor(ColorStateList)
2532     *
2533     * @attr ref android.R.styleable#TextView_textColor
2534     */
2535    public void setTextColor(ColorStateList colors) {
2536        if (colors == null) {
2537            throw new NullPointerException();
2538        }
2539
2540        mTextColor = colors;
2541        updateTextColors();
2542    }
2543
2544    /**
2545     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
2546     *
2547     * @see #setTextColor(ColorStateList)
2548     * @see #setTextColor(int)
2549     *
2550     * @attr ref android.R.styleable#TextView_textColor
2551     */
2552    public final ColorStateList getTextColors() {
2553        return mTextColor;
2554    }
2555
2556    /**
2557     * <p>Return the current color selected for normal text.</p>
2558     *
2559     * @return Returns the current text color.
2560     */
2561    public final int getCurrentTextColor() {
2562        return mCurTextColor;
2563    }
2564
2565    /**
2566     * Sets the color used to display the selection highlight.
2567     *
2568     * @attr ref android.R.styleable#TextView_textColorHighlight
2569     */
2570    @android.view.RemotableViewMethod
2571    public void setHighlightColor(int color) {
2572        if (mHighlightColor != color) {
2573            mHighlightColor = color;
2574            invalidate();
2575        }
2576    }
2577
2578    /**
2579     * @return the color used to display the selection highlight
2580     *
2581     * @see #setHighlightColor(int)
2582     *
2583     * @attr ref android.R.styleable#TextView_textColorHighlight
2584     */
2585    public int getHighlightColor() {
2586        return mHighlightColor;
2587    }
2588
2589    /**
2590     * Sets whether the soft input method will be made visible when this
2591     * TextView gets focused. The default is true.
2592     * @hide
2593     */
2594    @android.view.RemotableViewMethod
2595    public final void setShowSoftInputOnFocus(boolean show) {
2596        createEditorIfNeeded();
2597        mEditor.mShowSoftInputOnFocus = show;
2598    }
2599
2600    /**
2601     * Returns whether the soft input method will be made visible when this
2602     * TextView gets focused. The default is true.
2603     * @hide
2604     */
2605    public final boolean getShowSoftInputOnFocus() {
2606        // When there is no Editor, return default true value
2607        return mEditor == null || mEditor.mShowSoftInputOnFocus;
2608    }
2609
2610    /**
2611     * Gives the text a shadow of the specified radius and color, the specified
2612     * distance from its normal position.
2613     *
2614     * @attr ref android.R.styleable#TextView_shadowColor
2615     * @attr ref android.R.styleable#TextView_shadowDx
2616     * @attr ref android.R.styleable#TextView_shadowDy
2617     * @attr ref android.R.styleable#TextView_shadowRadius
2618     */
2619    public void setShadowLayer(float radius, float dx, float dy, int color) {
2620        mTextPaint.setShadowLayer(radius, dx, dy, color);
2621
2622        mShadowRadius = radius;
2623        mShadowDx = dx;
2624        mShadowDy = dy;
2625
2626        // Will change text clip region
2627        if (mEditor != null) mEditor.invalidateTextDisplayList();
2628        invalidate();
2629    }
2630
2631    /**
2632     * Gets the radius of the shadow layer.
2633     *
2634     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
2635     *
2636     * @see #setShadowLayer(float, float, float, int)
2637     *
2638     * @attr ref android.R.styleable#TextView_shadowRadius
2639     */
2640    public float getShadowRadius() {
2641        return mShadowRadius;
2642    }
2643
2644    /**
2645     * @return the horizontal offset of the shadow layer
2646     *
2647     * @see #setShadowLayer(float, float, float, int)
2648     *
2649     * @attr ref android.R.styleable#TextView_shadowDx
2650     */
2651    public float getShadowDx() {
2652        return mShadowDx;
2653    }
2654
2655    /**
2656     * @return the vertical offset of the shadow layer
2657     *
2658     * @see #setShadowLayer(float, float, float, int)
2659     *
2660     * @attr ref android.R.styleable#TextView_shadowDy
2661     */
2662    public float getShadowDy() {
2663        return mShadowDy;
2664    }
2665
2666    /**
2667     * @return the color of the shadow layer
2668     *
2669     * @see #setShadowLayer(float, float, float, int)
2670     *
2671     * @attr ref android.R.styleable#TextView_shadowColor
2672     */
2673    public int getShadowColor() {
2674        return mTextPaint.shadowColor;
2675    }
2676
2677    /**
2678     * @return the base paint used for the text.  Please use this only to
2679     * consult the Paint's properties and not to change them.
2680     */
2681    public TextPaint getPaint() {
2682        return mTextPaint;
2683    }
2684
2685    /**
2686     * Sets the autolink mask of the text.  See {@link
2687     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2688     * possible values.
2689     *
2690     * @attr ref android.R.styleable#TextView_autoLink
2691     */
2692    @android.view.RemotableViewMethod
2693    public final void setAutoLinkMask(int mask) {
2694        mAutoLinkMask = mask;
2695    }
2696
2697    /**
2698     * Sets whether the movement method will automatically be set to
2699     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2700     * set to nonzero and links are detected in {@link #setText}.
2701     * The default is true.
2702     *
2703     * @attr ref android.R.styleable#TextView_linksClickable
2704     */
2705    @android.view.RemotableViewMethod
2706    public final void setLinksClickable(boolean whether) {
2707        mLinksClickable = whether;
2708    }
2709
2710    /**
2711     * Returns whether the movement method will automatically be set to
2712     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2713     * set to nonzero and links are detected in {@link #setText}.
2714     * The default is true.
2715     *
2716     * @attr ref android.R.styleable#TextView_linksClickable
2717     */
2718    public final boolean getLinksClickable() {
2719        return mLinksClickable;
2720    }
2721
2722    /**
2723     * Returns the list of URLSpans attached to the text
2724     * (by {@link Linkify} or otherwise) if any.  You can call
2725     * {@link URLSpan#getURL} on them to find where they link to
2726     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
2727     * to find the region of the text they are attached to.
2728     */
2729    public URLSpan[] getUrls() {
2730        if (mText instanceof Spanned) {
2731            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
2732        } else {
2733            return new URLSpan[0];
2734        }
2735    }
2736
2737    /**
2738     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
2739     * TextView.
2740     *
2741     * @see #setHintTextColor(ColorStateList)
2742     * @see #getHintTextColors()
2743     * @see #setTextColor(int)
2744     *
2745     * @attr ref android.R.styleable#TextView_textColorHint
2746     */
2747    @android.view.RemotableViewMethod
2748    public final void setHintTextColor(int color) {
2749        mHintTextColor = ColorStateList.valueOf(color);
2750        updateTextColors();
2751    }
2752
2753    /**
2754     * Sets the color of the hint text.
2755     *
2756     * @see #getHintTextColors()
2757     * @see #setHintTextColor(int)
2758     * @see #setTextColor(ColorStateList)
2759     * @see #setLinkTextColor(ColorStateList)
2760     *
2761     * @attr ref android.R.styleable#TextView_textColorHint
2762     */
2763    public final void setHintTextColor(ColorStateList colors) {
2764        mHintTextColor = colors;
2765        updateTextColors();
2766    }
2767
2768    /**
2769     * @return the color of the hint text, for the different states of this TextView.
2770     *
2771     * @see #setHintTextColor(ColorStateList)
2772     * @see #setHintTextColor(int)
2773     * @see #setTextColor(ColorStateList)
2774     * @see #setLinkTextColor(ColorStateList)
2775     *
2776     * @attr ref android.R.styleable#TextView_textColorHint
2777     */
2778    public final ColorStateList getHintTextColors() {
2779        return mHintTextColor;
2780    }
2781
2782    /**
2783     * <p>Return the current color selected to paint the hint text.</p>
2784     *
2785     * @return Returns the current hint text color.
2786     */
2787    public final int getCurrentHintTextColor() {
2788        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
2789    }
2790
2791    /**
2792     * Sets the color of links in the text.
2793     *
2794     * @see #setLinkTextColor(ColorStateList)
2795     * @see #getLinkTextColors()
2796     *
2797     * @attr ref android.R.styleable#TextView_textColorLink
2798     */
2799    @android.view.RemotableViewMethod
2800    public final void setLinkTextColor(int color) {
2801        mLinkTextColor = ColorStateList.valueOf(color);
2802        updateTextColors();
2803    }
2804
2805    /**
2806     * Sets the color of links in the text.
2807     *
2808     * @see #setLinkTextColor(int)
2809     * @see #getLinkTextColors()
2810     * @see #setTextColor(ColorStateList)
2811     * @see #setHintTextColor(ColorStateList)
2812     *
2813     * @attr ref android.R.styleable#TextView_textColorLink
2814     */
2815    public final void setLinkTextColor(ColorStateList colors) {
2816        mLinkTextColor = colors;
2817        updateTextColors();
2818    }
2819
2820    /**
2821     * @return the list of colors used to paint the links in the text, for the different states of
2822     * this TextView
2823     *
2824     * @see #setLinkTextColor(ColorStateList)
2825     * @see #setLinkTextColor(int)
2826     *
2827     * @attr ref android.R.styleable#TextView_textColorLink
2828     */
2829    public final ColorStateList getLinkTextColors() {
2830        return mLinkTextColor;
2831    }
2832
2833    /**
2834     * Sets the horizontal alignment of the text and the
2835     * vertical gravity that will be used when there is extra space
2836     * in the TextView beyond what is required for the text itself.
2837     *
2838     * @see android.view.Gravity
2839     * @attr ref android.R.styleable#TextView_gravity
2840     */
2841    public void setGravity(int gravity) {
2842        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
2843            gravity |= Gravity.START;
2844        }
2845        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
2846            gravity |= Gravity.TOP;
2847        }
2848
2849        boolean newLayout = false;
2850
2851        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
2852            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
2853            newLayout = true;
2854        }
2855
2856        if (gravity != mGravity) {
2857            invalidate();
2858        }
2859
2860        mGravity = gravity;
2861
2862        if (mLayout != null && newLayout) {
2863            // XXX this is heavy-handed because no actual content changes.
2864            int want = mLayout.getWidth();
2865            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
2866
2867            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
2868                          mRight - mLeft - getCompoundPaddingLeft() -
2869                          getCompoundPaddingRight(), true);
2870        }
2871    }
2872
2873    /**
2874     * Returns the horizontal and vertical alignment of this TextView.
2875     *
2876     * @see android.view.Gravity
2877     * @attr ref android.R.styleable#TextView_gravity
2878     */
2879    public int getGravity() {
2880        return mGravity;
2881    }
2882
2883    /**
2884     * @return the flags on the Paint being used to display the text.
2885     * @see Paint#getFlags
2886     */
2887    public int getPaintFlags() {
2888        return mTextPaint.getFlags();
2889    }
2890
2891    /**
2892     * Sets flags on the Paint being used to display the text and
2893     * reflows the text if they are different from the old flags.
2894     * @see Paint#setFlags
2895     */
2896    @android.view.RemotableViewMethod
2897    public void setPaintFlags(int flags) {
2898        if (mTextPaint.getFlags() != flags) {
2899            mTextPaint.setFlags(flags);
2900
2901            if (mLayout != null) {
2902                nullLayouts();
2903                requestLayout();
2904                invalidate();
2905            }
2906        }
2907    }
2908
2909    /**
2910     * Sets whether the text should be allowed to be wider than the
2911     * View is.  If false, it will be wrapped to the width of the View.
2912     *
2913     * @attr ref android.R.styleable#TextView_scrollHorizontally
2914     */
2915    public void setHorizontallyScrolling(boolean whether) {
2916        if (mHorizontallyScrolling != whether) {
2917            mHorizontallyScrolling = whether;
2918
2919            if (mLayout != null) {
2920                nullLayouts();
2921                requestLayout();
2922                invalidate();
2923            }
2924        }
2925    }
2926
2927    /**
2928     * Returns whether the text is allowed to be wider than the View is.
2929     * If false, the text will be wrapped to the width of the View.
2930     *
2931     * @attr ref android.R.styleable#TextView_scrollHorizontally
2932     * @hide
2933     */
2934    public boolean getHorizontallyScrolling() {
2935        return mHorizontallyScrolling;
2936    }
2937
2938    /**
2939     * Makes the TextView at least this many lines tall.
2940     *
2941     * Setting this value overrides any other (minimum) height setting. A single line TextView will
2942     * set this value to 1.
2943     *
2944     * @see #getMinLines()
2945     *
2946     * @attr ref android.R.styleable#TextView_minLines
2947     */
2948    @android.view.RemotableViewMethod
2949    public void setMinLines(int minlines) {
2950        mMinimum = minlines;
2951        mMinMode = LINES;
2952
2953        requestLayout();
2954        invalidate();
2955    }
2956
2957    /**
2958     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
2959     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
2960     *
2961     * @see #setMinLines(int)
2962     *
2963     * @attr ref android.R.styleable#TextView_minLines
2964     */
2965    public int getMinLines() {
2966        return mMinMode == LINES ? mMinimum : -1;
2967    }
2968
2969    /**
2970     * Makes the TextView at least this many pixels tall.
2971     *
2972     * Setting this value overrides any other (minimum) number of lines setting.
2973     *
2974     * @attr ref android.R.styleable#TextView_minHeight
2975     */
2976    @android.view.RemotableViewMethod
2977    public void setMinHeight(int minHeight) {
2978        mMinimum = minHeight;
2979        mMinMode = PIXELS;
2980
2981        requestLayout();
2982        invalidate();
2983    }
2984
2985    /**
2986     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
2987     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
2988     *
2989     * @see #setMinHeight(int)
2990     *
2991     * @attr ref android.R.styleable#TextView_minHeight
2992     */
2993    public int getMinHeight() {
2994        return mMinMode == PIXELS ? mMinimum : -1;
2995    }
2996
2997    /**
2998     * Makes the TextView at most this many lines tall.
2999     *
3000     * Setting this value overrides any other (maximum) height setting.
3001     *
3002     * @attr ref android.R.styleable#TextView_maxLines
3003     */
3004    @android.view.RemotableViewMethod
3005    public void setMaxLines(int maxlines) {
3006        mMaximum = maxlines;
3007        mMaxMode = LINES;
3008
3009        requestLayout();
3010        invalidate();
3011    }
3012
3013    /**
3014     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
3015     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
3016     *
3017     * @see #setMaxLines(int)
3018     *
3019     * @attr ref android.R.styleable#TextView_maxLines
3020     */
3021    public int getMaxLines() {
3022        return mMaxMode == LINES ? mMaximum : -1;
3023    }
3024
3025    /**
3026     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
3027     * {@link #setMaxLines(int)} method.
3028     *
3029     * Setting this value overrides any other (maximum) number of lines setting.
3030     *
3031     * @attr ref android.R.styleable#TextView_maxHeight
3032     */
3033    @android.view.RemotableViewMethod
3034    public void setMaxHeight(int maxHeight) {
3035        mMaximum = maxHeight;
3036        mMaxMode = PIXELS;
3037
3038        requestLayout();
3039        invalidate();
3040    }
3041
3042    /**
3043     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
3044     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
3045     *
3046     * @see #setMaxHeight(int)
3047     *
3048     * @attr ref android.R.styleable#TextView_maxHeight
3049     */
3050    public int getMaxHeight() {
3051        return mMaxMode == PIXELS ? mMaximum : -1;
3052    }
3053
3054    /**
3055     * Makes the TextView exactly this many lines tall.
3056     *
3057     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3058     * height setting. A single line TextView will set this value to 1.
3059     *
3060     * @attr ref android.R.styleable#TextView_lines
3061     */
3062    @android.view.RemotableViewMethod
3063    public void setLines(int lines) {
3064        mMaximum = mMinimum = lines;
3065        mMaxMode = mMinMode = LINES;
3066
3067        requestLayout();
3068        invalidate();
3069    }
3070
3071    /**
3072     * Makes the TextView exactly this many pixels tall.
3073     * You could do the same thing by specifying this number in the
3074     * LayoutParams.
3075     *
3076     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3077     * height setting.
3078     *
3079     * @attr ref android.R.styleable#TextView_height
3080     */
3081    @android.view.RemotableViewMethod
3082    public void setHeight(int pixels) {
3083        mMaximum = mMinimum = pixels;
3084        mMaxMode = mMinMode = PIXELS;
3085
3086        requestLayout();
3087        invalidate();
3088    }
3089
3090    /**
3091     * Makes the TextView at least this many ems wide
3092     *
3093     * @attr ref android.R.styleable#TextView_minEms
3094     */
3095    @android.view.RemotableViewMethod
3096    public void setMinEms(int minems) {
3097        mMinWidth = minems;
3098        mMinWidthMode = EMS;
3099
3100        requestLayout();
3101        invalidate();
3102    }
3103
3104    /**
3105     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
3106     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
3107     *
3108     * @see #setMinEms(int)
3109     * @see #setEms(int)
3110     *
3111     * @attr ref android.R.styleable#TextView_minEms
3112     */
3113    public int getMinEms() {
3114        return mMinWidthMode == EMS ? mMinWidth : -1;
3115    }
3116
3117    /**
3118     * Makes the TextView at least this many pixels wide
3119     *
3120     * @attr ref android.R.styleable#TextView_minWidth
3121     */
3122    @android.view.RemotableViewMethod
3123    public void setMinWidth(int minpixels) {
3124        mMinWidth = minpixels;
3125        mMinWidthMode = PIXELS;
3126
3127        requestLayout();
3128        invalidate();
3129    }
3130
3131    /**
3132     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
3133     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
3134     *
3135     * @see #setMinWidth(int)
3136     * @see #setWidth(int)
3137     *
3138     * @attr ref android.R.styleable#TextView_minWidth
3139     */
3140    public int getMinWidth() {
3141        return mMinWidthMode == PIXELS ? mMinWidth : -1;
3142    }
3143
3144    /**
3145     * Makes the TextView at most this many ems wide
3146     *
3147     * @attr ref android.R.styleable#TextView_maxEms
3148     */
3149    @android.view.RemotableViewMethod
3150    public void setMaxEms(int maxems) {
3151        mMaxWidth = maxems;
3152        mMaxWidthMode = EMS;
3153
3154        requestLayout();
3155        invalidate();
3156    }
3157
3158    /**
3159     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3160     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3161     *
3162     * @see #setMaxEms(int)
3163     * @see #setEms(int)
3164     *
3165     * @attr ref android.R.styleable#TextView_maxEms
3166     */
3167    public int getMaxEms() {
3168        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3169    }
3170
3171    /**
3172     * Makes the TextView at most this many pixels wide
3173     *
3174     * @attr ref android.R.styleable#TextView_maxWidth
3175     */
3176    @android.view.RemotableViewMethod
3177    public void setMaxWidth(int maxpixels) {
3178        mMaxWidth = maxpixels;
3179        mMaxWidthMode = PIXELS;
3180
3181        requestLayout();
3182        invalidate();
3183    }
3184
3185    /**
3186     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3187     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3188     *
3189     * @see #setMaxWidth(int)
3190     * @see #setWidth(int)
3191     *
3192     * @attr ref android.R.styleable#TextView_maxWidth
3193     */
3194    public int getMaxWidth() {
3195        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3196    }
3197
3198    /**
3199     * Makes the TextView exactly this many ems wide
3200     *
3201     * @see #setMaxEms(int)
3202     * @see #setMinEms(int)
3203     * @see #getMinEms()
3204     * @see #getMaxEms()
3205     *
3206     * @attr ref android.R.styleable#TextView_ems
3207     */
3208    @android.view.RemotableViewMethod
3209    public void setEms(int ems) {
3210        mMaxWidth = mMinWidth = ems;
3211        mMaxWidthMode = mMinWidthMode = EMS;
3212
3213        requestLayout();
3214        invalidate();
3215    }
3216
3217    /**
3218     * Makes the TextView exactly this many pixels wide.
3219     * You could do the same thing by specifying this number in the
3220     * LayoutParams.
3221     *
3222     * @see #setMaxWidth(int)
3223     * @see #setMinWidth(int)
3224     * @see #getMinWidth()
3225     * @see #getMaxWidth()
3226     *
3227     * @attr ref android.R.styleable#TextView_width
3228     */
3229    @android.view.RemotableViewMethod
3230    public void setWidth(int pixels) {
3231        mMaxWidth = mMinWidth = pixels;
3232        mMaxWidthMode = mMinWidthMode = PIXELS;
3233
3234        requestLayout();
3235        invalidate();
3236    }
3237
3238    /**
3239     * Sets line spacing for this TextView.  Each line will have its height
3240     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3241     *
3242     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3243     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3244     */
3245    public void setLineSpacing(float add, float mult) {
3246        if (mSpacingAdd != add || mSpacingMult != mult) {
3247            mSpacingAdd = add;
3248            mSpacingMult = mult;
3249
3250            if (mLayout != null) {
3251                nullLayouts();
3252                requestLayout();
3253                invalidate();
3254            }
3255        }
3256    }
3257
3258    /**
3259     * Gets the line spacing multiplier
3260     *
3261     * @return the value by which each line's height is multiplied to get its actual height.
3262     *
3263     * @see #setLineSpacing(float, float)
3264     * @see #getLineSpacingExtra()
3265     *
3266     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3267     */
3268    public float getLineSpacingMultiplier() {
3269        return mSpacingMult;
3270    }
3271
3272    /**
3273     * Gets the line spacing extra space
3274     *
3275     * @return the extra space that is added to the height of each lines of this TextView.
3276     *
3277     * @see #setLineSpacing(float, float)
3278     * @see #getLineSpacingMultiplier()
3279     *
3280     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3281     */
3282    public float getLineSpacingExtra() {
3283        return mSpacingAdd;
3284    }
3285
3286    /**
3287     * Convenience method: Append the specified text to the TextView's
3288     * display buffer, upgrading it to BufferType.EDITABLE if it was
3289     * not already editable.
3290     */
3291    public final void append(CharSequence text) {
3292        append(text, 0, text.length());
3293    }
3294
3295    /**
3296     * Convenience method: Append the specified text slice to the TextView's
3297     * display buffer, upgrading it to BufferType.EDITABLE if it was
3298     * not already editable.
3299     */
3300    public void append(CharSequence text, int start, int end) {
3301        if (!(mText instanceof Editable)) {
3302            setText(mText, BufferType.EDITABLE);
3303        }
3304
3305        ((Editable) mText).append(text, start, end);
3306    }
3307
3308    private void updateTextColors() {
3309        boolean inval = false;
3310        int color = mTextColor.getColorForState(getDrawableState(), 0);
3311        if (color != mCurTextColor) {
3312            mCurTextColor = color;
3313            inval = true;
3314        }
3315        if (mLinkTextColor != null) {
3316            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
3317            if (color != mTextPaint.linkColor) {
3318                mTextPaint.linkColor = color;
3319                inval = true;
3320            }
3321        }
3322        if (mHintTextColor != null) {
3323            color = mHintTextColor.getColorForState(getDrawableState(), 0);
3324            if (color != mCurHintTextColor && mText.length() == 0) {
3325                mCurHintTextColor = color;
3326                inval = true;
3327            }
3328        }
3329        if (inval) {
3330            // Text needs to be redrawn with the new color
3331            if (mEditor != null) mEditor.invalidateTextDisplayList();
3332            invalidate();
3333        }
3334    }
3335
3336    @Override
3337    protected void drawableStateChanged() {
3338        super.drawableStateChanged();
3339        if (mTextColor != null && mTextColor.isStateful()
3340                || (mHintTextColor != null && mHintTextColor.isStateful())
3341                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
3342            updateTextColors();
3343        }
3344
3345        final Drawables dr = mDrawables;
3346        if (dr != null) {
3347            int[] state = getDrawableState();
3348            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
3349                dr.mDrawableTop.setState(state);
3350            }
3351            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
3352                dr.mDrawableBottom.setState(state);
3353            }
3354            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
3355                dr.mDrawableLeft.setState(state);
3356            }
3357            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
3358                dr.mDrawableRight.setState(state);
3359            }
3360            if (dr.mDrawableStart != null && dr.mDrawableStart.isStateful()) {
3361                dr.mDrawableStart.setState(state);
3362            }
3363            if (dr.mDrawableEnd != null && dr.mDrawableEnd.isStateful()) {
3364                dr.mDrawableEnd.setState(state);
3365            }
3366        }
3367    }
3368
3369    @Override
3370    public Parcelable onSaveInstanceState() {
3371        Parcelable superState = super.onSaveInstanceState();
3372
3373        // Save state if we are forced to
3374        boolean save = mFreezesText;
3375        int start = 0;
3376        int end = 0;
3377
3378        if (mText != null) {
3379            start = getSelectionStart();
3380            end = getSelectionEnd();
3381            if (start >= 0 || end >= 0) {
3382                // Or save state if there is a selection
3383                save = true;
3384            }
3385        }
3386
3387        if (save) {
3388            SavedState ss = new SavedState(superState);
3389            // XXX Should also save the current scroll position!
3390            ss.selStart = start;
3391            ss.selEnd = end;
3392
3393            if (mText instanceof Spanned) {
3394                /*
3395                 * Calling setText() strips off any ChangeWatchers;
3396                 * strip them now to avoid leaking references.
3397                 * But do it to a copy so that if there are any
3398                 * further changes to the text of this view, it
3399                 * won't get into an inconsistent state.
3400                 */
3401
3402                Spannable sp = new SpannableString(mText);
3403
3404                for (ChangeWatcher cw : sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
3405                    sp.removeSpan(cw);
3406                }
3407
3408                if (mEditor != null) {
3409                    removeMisspelledSpans(sp);
3410                    sp.removeSpan(mEditor.mSuggestionRangeSpan);
3411                }
3412
3413                ss.text = sp;
3414            } else {
3415                ss.text = mText.toString();
3416            }
3417
3418            if (isFocused() && start >= 0 && end >= 0) {
3419                ss.frozenWithFocus = true;
3420            }
3421
3422            ss.error = getError();
3423
3424            return ss;
3425        }
3426
3427        return superState;
3428    }
3429
3430    void removeMisspelledSpans(Spannable spannable) {
3431        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
3432                SuggestionSpan.class);
3433        for (int i = 0; i < suggestionSpans.length; i++) {
3434            int flags = suggestionSpans[i].getFlags();
3435            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
3436                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
3437                spannable.removeSpan(suggestionSpans[i]);
3438            }
3439        }
3440    }
3441
3442    @Override
3443    public void onRestoreInstanceState(Parcelable state) {
3444        if (!(state instanceof SavedState)) {
3445            super.onRestoreInstanceState(state);
3446            return;
3447        }
3448
3449        SavedState ss = (SavedState)state;
3450        super.onRestoreInstanceState(ss.getSuperState());
3451
3452        // XXX restore buffer type too, as well as lots of other stuff
3453        if (ss.text != null) {
3454            setText(ss.text);
3455        }
3456
3457        if (ss.selStart >= 0 && ss.selEnd >= 0) {
3458            if (mText instanceof Spannable) {
3459                int len = mText.length();
3460
3461                if (ss.selStart > len || ss.selEnd > len) {
3462                    String restored = "";
3463
3464                    if (ss.text != null) {
3465                        restored = "(restored) ";
3466                    }
3467
3468                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
3469                          "/" + ss.selEnd + " out of range for " + restored +
3470                          "text " + mText);
3471                } else {
3472                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
3473
3474                    if (ss.frozenWithFocus) {
3475                        createEditorIfNeeded();
3476                        mEditor.mFrozenWithFocus = true;
3477                    }
3478                }
3479            }
3480        }
3481
3482        if (ss.error != null) {
3483            final CharSequence error = ss.error;
3484            // Display the error later, after the first layout pass
3485            post(new Runnable() {
3486                public void run() {
3487                    setError(error);
3488                }
3489            });
3490        }
3491    }
3492
3493    /**
3494     * Control whether this text view saves its entire text contents when
3495     * freezing to an icicle, in addition to dynamic state such as cursor
3496     * position.  By default this is false, not saving the text.  Set to true
3497     * if the text in the text view is not being saved somewhere else in
3498     * persistent storage (such as in a content provider) so that if the
3499     * view is later thawed the user will not lose their data.
3500     *
3501     * @param freezesText Controls whether a frozen icicle should include the
3502     * entire text data: true to include it, false to not.
3503     *
3504     * @attr ref android.R.styleable#TextView_freezesText
3505     */
3506    @android.view.RemotableViewMethod
3507    public void setFreezesText(boolean freezesText) {
3508        mFreezesText = freezesText;
3509    }
3510
3511    /**
3512     * Return whether this text view is including its entire text contents
3513     * in frozen icicles.
3514     *
3515     * @return Returns true if text is included, false if it isn't.
3516     *
3517     * @see #setFreezesText
3518     */
3519    public boolean getFreezesText() {
3520        return mFreezesText;
3521    }
3522
3523    ///////////////////////////////////////////////////////////////////////////
3524
3525    /**
3526     * Sets the Factory used to create new Editables.
3527     */
3528    public final void setEditableFactory(Editable.Factory factory) {
3529        mEditableFactory = factory;
3530        setText(mText);
3531    }
3532
3533    /**
3534     * Sets the Factory used to create new Spannables.
3535     */
3536    public final void setSpannableFactory(Spannable.Factory factory) {
3537        mSpannableFactory = factory;
3538        setText(mText);
3539    }
3540
3541    /**
3542     * Sets the string value of the TextView. TextView <em>does not</em> accept
3543     * HTML-like formatting, which you can do with text strings in XML resource files.
3544     * To style your strings, attach android.text.style.* objects to a
3545     * {@link android.text.SpannableString SpannableString}, or see the
3546     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
3547     * Available Resource Types</a> documentation for an example of setting
3548     * formatted text in the XML resource file.
3549     *
3550     * @attr ref android.R.styleable#TextView_text
3551     */
3552    @android.view.RemotableViewMethod
3553    public final void setText(CharSequence text) {
3554        setText(text, mBufferType);
3555    }
3556
3557    /**
3558     * Like {@link #setText(CharSequence)},
3559     * except that the cursor position (if any) is retained in the new text.
3560     *
3561     * @param text The new text to place in the text view.
3562     *
3563     * @see #setText(CharSequence)
3564     */
3565    @android.view.RemotableViewMethod
3566    public final void setTextKeepState(CharSequence text) {
3567        setTextKeepState(text, mBufferType);
3568    }
3569
3570    /**
3571     * Sets the text that this TextView is to display (see
3572     * {@link #setText(CharSequence)}) and also sets whether it is stored
3573     * in a styleable/spannable buffer and whether it is editable.
3574     *
3575     * @attr ref android.R.styleable#TextView_text
3576     * @attr ref android.R.styleable#TextView_bufferType
3577     */
3578    public void setText(CharSequence text, BufferType type) {
3579        setText(text, type, true, 0);
3580
3581        if (mCharWrapper != null) {
3582            mCharWrapper.mChars = null;
3583        }
3584    }
3585
3586    private void setText(CharSequence text, BufferType type,
3587                         boolean notifyBefore, int oldlen) {
3588        if (text == null) {
3589            text = "";
3590        }
3591
3592        // If suggestions are not enabled, remove the suggestion spans from the text
3593        if (!isSuggestionsEnabled()) {
3594            text = removeSuggestionSpans(text);
3595        }
3596
3597        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
3598
3599        if (text instanceof Spanned &&
3600            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
3601            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
3602                setHorizontalFadingEdgeEnabled(true);
3603                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
3604            } else {
3605                setHorizontalFadingEdgeEnabled(false);
3606                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
3607            }
3608            setEllipsize(TextUtils.TruncateAt.MARQUEE);
3609        }
3610
3611        int n = mFilters.length;
3612        for (int i = 0; i < n; i++) {
3613            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
3614            if (out != null) {
3615                text = out;
3616            }
3617        }
3618
3619        if (notifyBefore) {
3620            if (mText != null) {
3621                oldlen = mText.length();
3622                sendBeforeTextChanged(mText, 0, oldlen, text.length());
3623            } else {
3624                sendBeforeTextChanged("", 0, 0, text.length());
3625            }
3626        }
3627
3628        boolean needEditableForNotification = false;
3629
3630        if (mListeners != null && mListeners.size() != 0) {
3631            needEditableForNotification = true;
3632        }
3633
3634        if (type == BufferType.EDITABLE || getKeyListener() != null ||
3635                needEditableForNotification) {
3636            createEditorIfNeeded();
3637            Editable t = mEditableFactory.newEditable(text);
3638            text = t;
3639            setFilters(t, mFilters);
3640            InputMethodManager imm = InputMethodManager.peekInstance();
3641            if (imm != null) imm.restartInput(this);
3642        } else if (type == BufferType.SPANNABLE || mMovement != null) {
3643            text = mSpannableFactory.newSpannable(text);
3644        } else if (!(text instanceof CharWrapper)) {
3645            text = TextUtils.stringOrSpannedString(text);
3646        }
3647
3648        if (mAutoLinkMask != 0) {
3649            Spannable s2;
3650
3651            if (type == BufferType.EDITABLE || text instanceof Spannable) {
3652                s2 = (Spannable) text;
3653            } else {
3654                s2 = mSpannableFactory.newSpannable(text);
3655            }
3656
3657            if (Linkify.addLinks(s2, mAutoLinkMask)) {
3658                text = s2;
3659                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
3660
3661                /*
3662                 * We must go ahead and set the text before changing the
3663                 * movement method, because setMovementMethod() may call
3664                 * setText() again to try to upgrade the buffer type.
3665                 */
3666                mText = text;
3667
3668                // Do not change the movement method for text that support text selection as it
3669                // would prevent an arbitrary cursor displacement.
3670                if (mLinksClickable && !textCanBeSelected()) {
3671                    setMovementMethod(LinkMovementMethod.getInstance());
3672                }
3673            }
3674        }
3675
3676        mBufferType = type;
3677        mText = text;
3678
3679        if (mTransformation == null) {
3680            mTransformed = text;
3681        } else {
3682            mTransformed = mTransformation.getTransformation(text, this);
3683        }
3684
3685        final int textLength = text.length();
3686
3687        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
3688            Spannable sp = (Spannable) text;
3689
3690            // Remove any ChangeWatchers that might have come from other TextViews.
3691            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
3692            final int count = watchers.length;
3693            for (int i = 0; i < count; i++) {
3694                sp.removeSpan(watchers[i]);
3695            }
3696
3697            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
3698
3699            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
3700                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
3701
3702            if (mEditor != null) mEditor.addSpanWatchers(sp);
3703
3704            if (mTransformation != null) {
3705                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
3706            }
3707
3708            if (mMovement != null) {
3709                mMovement.initialize(this, (Spannable) text);
3710
3711                /*
3712                 * Initializing the movement method will have set the
3713                 * selection, so reset mSelectionMoved to keep that from
3714                 * interfering with the normal on-focus selection-setting.
3715                 */
3716                if (mEditor != null) mEditor.mSelectionMoved = false;
3717            }
3718        }
3719
3720        if (mLayout != null) {
3721            checkForRelayout();
3722        }
3723
3724        sendOnTextChanged(text, 0, oldlen, textLength);
3725        onTextChanged(text, 0, oldlen, textLength);
3726
3727        if (needEditableForNotification) {
3728            sendAfterTextChanged((Editable) text);
3729        }
3730
3731        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
3732        if (mEditor != null) mEditor.prepareCursorControllers();
3733    }
3734
3735    /**
3736     * Sets the TextView to display the specified slice of the specified
3737     * char array.  You must promise that you will not change the contents
3738     * of the array except for right before another call to setText(),
3739     * since the TextView has no way to know that the text
3740     * has changed and that it needs to invalidate and re-layout.
3741     */
3742    public final void setText(char[] text, int start, int len) {
3743        int oldlen = 0;
3744
3745        if (start < 0 || len < 0 || start + len > text.length) {
3746            throw new IndexOutOfBoundsException(start + ", " + len);
3747        }
3748
3749        /*
3750         * We must do the before-notification here ourselves because if
3751         * the old text is a CharWrapper we destroy it before calling
3752         * into the normal path.
3753         */
3754        if (mText != null) {
3755            oldlen = mText.length();
3756            sendBeforeTextChanged(mText, 0, oldlen, len);
3757        } else {
3758            sendBeforeTextChanged("", 0, 0, len);
3759        }
3760
3761        if (mCharWrapper == null) {
3762            mCharWrapper = new CharWrapper(text, start, len);
3763        } else {
3764            mCharWrapper.set(text, start, len);
3765        }
3766
3767        setText(mCharWrapper, mBufferType, false, oldlen);
3768    }
3769
3770    /**
3771     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
3772     * except that the cursor position (if any) is retained in the new text.
3773     *
3774     * @see #setText(CharSequence, android.widget.TextView.BufferType)
3775     */
3776    public final void setTextKeepState(CharSequence text, BufferType type) {
3777        int start = getSelectionStart();
3778        int end = getSelectionEnd();
3779        int len = text.length();
3780
3781        setText(text, type);
3782
3783        if (start >= 0 || end >= 0) {
3784            if (mText instanceof Spannable) {
3785                Selection.setSelection((Spannable) mText,
3786                                       Math.max(0, Math.min(start, len)),
3787                                       Math.max(0, Math.min(end, len)));
3788            }
3789        }
3790    }
3791
3792    @android.view.RemotableViewMethod
3793    public final void setText(int resid) {
3794        setText(getContext().getResources().getText(resid));
3795    }
3796
3797    public final void setText(int resid, BufferType type) {
3798        setText(getContext().getResources().getText(resid), type);
3799    }
3800
3801    /**
3802     * Sets the text to be displayed when the text of the TextView is empty.
3803     * Null means to use the normal empty text. The hint does not currently
3804     * participate in determining the size of the view.
3805     *
3806     * @attr ref android.R.styleable#TextView_hint
3807     */
3808    @android.view.RemotableViewMethod
3809    public final void setHint(CharSequence hint) {
3810        mHint = TextUtils.stringOrSpannedString(hint);
3811
3812        if (mLayout != null) {
3813            checkForRelayout();
3814        }
3815
3816        if (mText.length() == 0) {
3817            invalidate();
3818        }
3819
3820        // Invalidate display list if hint is currently used
3821        if (mEditor != null && mText.length() == 0 && mHint != null) {
3822            mEditor.invalidateTextDisplayList();
3823        }
3824    }
3825
3826    /**
3827     * Sets the text to be displayed when the text of the TextView is empty,
3828     * from a resource.
3829     *
3830     * @attr ref android.R.styleable#TextView_hint
3831     */
3832    @android.view.RemotableViewMethod
3833    public final void setHint(int resid) {
3834        setHint(getContext().getResources().getText(resid));
3835    }
3836
3837    /**
3838     * Returns the hint that is displayed when the text of the TextView
3839     * is empty.
3840     *
3841     * @attr ref android.R.styleable#TextView_hint
3842     */
3843    @ViewDebug.CapturedViewProperty
3844    public CharSequence getHint() {
3845        return mHint;
3846    }
3847
3848    boolean isSingleLine() {
3849        return mSingleLine;
3850    }
3851
3852    private static boolean isMultilineInputType(int type) {
3853        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
3854            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
3855    }
3856
3857    /**
3858     * Removes the suggestion spans.
3859     */
3860    CharSequence removeSuggestionSpans(CharSequence text) {
3861       if (text instanceof Spanned) {
3862           Spannable spannable;
3863           if (text instanceof Spannable) {
3864               spannable = (Spannable) text;
3865           } else {
3866               spannable = new SpannableString(text);
3867               text = spannable;
3868           }
3869
3870           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
3871           for (int i = 0; i < spans.length; i++) {
3872               spannable.removeSpan(spans[i]);
3873           }
3874       }
3875       return text;
3876    }
3877
3878    /**
3879     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
3880     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
3881     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
3882     * then a soft keyboard will not be displayed for this text view.
3883     *
3884     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
3885     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
3886     * type.
3887     *
3888     * @see #getInputType()
3889     * @see #setRawInputType(int)
3890     * @see android.text.InputType
3891     * @attr ref android.R.styleable#TextView_inputType
3892     */
3893    public void setInputType(int type) {
3894        final boolean wasPassword = isPasswordInputType(getInputType());
3895        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
3896        setInputType(type, false);
3897        final boolean isPassword = isPasswordInputType(type);
3898        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
3899        boolean forceUpdate = false;
3900        if (isPassword) {
3901            setTransformationMethod(PasswordTransformationMethod.getInstance());
3902            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
3903        } else if (isVisiblePassword) {
3904            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3905                forceUpdate = true;
3906            }
3907            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
3908        } else if (wasPassword || wasVisiblePassword) {
3909            // not in password mode, clean up typeface and transformation
3910            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
3911            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3912                forceUpdate = true;
3913            }
3914        }
3915
3916        boolean singleLine = !isMultilineInputType(type);
3917
3918        // We need to update the single line mode if it has changed or we
3919        // were previously in password mode.
3920        if (mSingleLine != singleLine || forceUpdate) {
3921            // Change single line mode, but only change the transformation if
3922            // we are not in password mode.
3923            applySingleLine(singleLine, !isPassword, true);
3924        }
3925
3926        if (!isSuggestionsEnabled()) {
3927            mText = removeSuggestionSpans(mText);
3928        }
3929
3930        InputMethodManager imm = InputMethodManager.peekInstance();
3931        if (imm != null) imm.restartInput(this);
3932    }
3933
3934    /**
3935     * It would be better to rely on the input type for everything. A password inputType should have
3936     * a password transformation. We should hence use isPasswordInputType instead of this method.
3937     *
3938     * We should:
3939     * - Call setInputType in setKeyListener instead of changing the input type directly (which
3940     * would install the correct transformation).
3941     * - Refuse the installation of a non-password transformation in setTransformation if the input
3942     * type is password.
3943     *
3944     * However, this is like this for legacy reasons and we cannot break existing apps. This method
3945     * is useful since it matches what the user can see (obfuscated text or not).
3946     *
3947     * @return true if the current transformation method is of the password type.
3948     */
3949    private boolean hasPasswordTransformationMethod() {
3950        return mTransformation instanceof PasswordTransformationMethod;
3951    }
3952
3953    private static boolean isPasswordInputType(int inputType) {
3954        final int variation =
3955                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3956        return variation
3957                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
3958                || variation
3959                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
3960                || variation
3961                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
3962    }
3963
3964    private static boolean isVisiblePasswordInputType(int inputType) {
3965        final int variation =
3966                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3967        return variation
3968                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
3969    }
3970
3971    /**
3972     * Directly change the content type integer of the text view, without
3973     * modifying any other state.
3974     * @see #setInputType(int)
3975     * @see android.text.InputType
3976     * @attr ref android.R.styleable#TextView_inputType
3977     */
3978    public void setRawInputType(int type) {
3979        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
3980        createEditorIfNeeded();
3981        mEditor.mInputType = type;
3982    }
3983
3984    private void setInputType(int type, boolean direct) {
3985        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
3986        KeyListener input;
3987        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
3988            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
3989            TextKeyListener.Capitalize cap;
3990            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
3991                cap = TextKeyListener.Capitalize.CHARACTERS;
3992            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
3993                cap = TextKeyListener.Capitalize.WORDS;
3994            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
3995                cap = TextKeyListener.Capitalize.SENTENCES;
3996            } else {
3997                cap = TextKeyListener.Capitalize.NONE;
3998            }
3999            input = TextKeyListener.getInstance(autotext, cap);
4000        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
4001            input = DigitsKeyListener.getInstance(
4002                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
4003                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
4004        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
4005            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
4006                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
4007                    input = DateKeyListener.getInstance();
4008                    break;
4009                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
4010                    input = TimeKeyListener.getInstance();
4011                    break;
4012                default:
4013                    input = DateTimeKeyListener.getInstance();
4014                    break;
4015            }
4016        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
4017            input = DialerKeyListener.getInstance();
4018        } else {
4019            input = TextKeyListener.getInstance();
4020        }
4021        setRawInputType(type);
4022        if (direct) {
4023            createEditorIfNeeded();
4024            mEditor.mKeyListener = input;
4025        } else {
4026            setKeyListenerOnly(input);
4027        }
4028    }
4029
4030    /**
4031     * Get the type of the editable content.
4032     *
4033     * @see #setInputType(int)
4034     * @see android.text.InputType
4035     */
4036    public int getInputType() {
4037        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
4038    }
4039
4040    /**
4041     * Change the editor type integer associated with the text view, which
4042     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
4043     * has focus.
4044     * @see #getImeOptions
4045     * @see android.view.inputmethod.EditorInfo
4046     * @attr ref android.R.styleable#TextView_imeOptions
4047     */
4048    public void setImeOptions(int imeOptions) {
4049        createEditorIfNeeded();
4050        mEditor.createInputContentTypeIfNeeded();
4051        mEditor.mInputContentType.imeOptions = imeOptions;
4052    }
4053
4054    /**
4055     * Get the type of the IME editor.
4056     *
4057     * @see #setImeOptions(int)
4058     * @see android.view.inputmethod.EditorInfo
4059     */
4060    public int getImeOptions() {
4061        return mEditor != null && mEditor.mInputContentType != null
4062                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
4063    }
4064
4065    /**
4066     * Change the custom IME action associated with the text view, which
4067     * will be reported to an IME with {@link EditorInfo#actionLabel}
4068     * and {@link EditorInfo#actionId} when it has focus.
4069     * @see #getImeActionLabel
4070     * @see #getImeActionId
4071     * @see android.view.inputmethod.EditorInfo
4072     * @attr ref android.R.styleable#TextView_imeActionLabel
4073     * @attr ref android.R.styleable#TextView_imeActionId
4074     */
4075    public void setImeActionLabel(CharSequence label, int actionId) {
4076        createEditorIfNeeded();
4077        mEditor.createInputContentTypeIfNeeded();
4078        mEditor.mInputContentType.imeActionLabel = label;
4079        mEditor.mInputContentType.imeActionId = actionId;
4080    }
4081
4082    /**
4083     * Get the IME action label previous set with {@link #setImeActionLabel}.
4084     *
4085     * @see #setImeActionLabel
4086     * @see android.view.inputmethod.EditorInfo
4087     */
4088    public CharSequence getImeActionLabel() {
4089        return mEditor != null && mEditor.mInputContentType != null
4090                ? mEditor.mInputContentType.imeActionLabel : null;
4091    }
4092
4093    /**
4094     * Get the IME action ID previous set with {@link #setImeActionLabel}.
4095     *
4096     * @see #setImeActionLabel
4097     * @see android.view.inputmethod.EditorInfo
4098     */
4099    public int getImeActionId() {
4100        return mEditor != null && mEditor.mInputContentType != null
4101                ? mEditor.mInputContentType.imeActionId : 0;
4102    }
4103
4104    /**
4105     * Set a special listener to be called when an action is performed
4106     * on the text view.  This will be called when the enter key is pressed,
4107     * or when an action supplied to the IME is selected by the user.  Setting
4108     * this means that the normal hard key event will not insert a newline
4109     * into the text view, even if it is multi-line; holding down the ALT
4110     * modifier will, however, allow the user to insert a newline character.
4111     */
4112    public void setOnEditorActionListener(OnEditorActionListener l) {
4113        createEditorIfNeeded();
4114        mEditor.createInputContentTypeIfNeeded();
4115        mEditor.mInputContentType.onEditorActionListener = l;
4116    }
4117
4118    /**
4119     * Called when an attached input method calls
4120     * {@link InputConnection#performEditorAction(int)
4121     * InputConnection.performEditorAction()}
4122     * for this text view.  The default implementation will call your action
4123     * listener supplied to {@link #setOnEditorActionListener}, or perform
4124     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
4125     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
4126     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
4127     * EditorInfo.IME_ACTION_DONE}.
4128     *
4129     * <p>For backwards compatibility, if no IME options have been set and the
4130     * text view would not normally advance focus on enter, then
4131     * the NEXT and DONE actions received here will be turned into an enter
4132     * key down/up pair to go through the normal key handling.
4133     *
4134     * @param actionCode The code of the action being performed.
4135     *
4136     * @see #setOnEditorActionListener
4137     */
4138    public void onEditorAction(int actionCode) {
4139        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
4140        if (ict != null) {
4141            if (ict.onEditorActionListener != null) {
4142                if (ict.onEditorActionListener.onEditorAction(this,
4143                        actionCode, null)) {
4144                    return;
4145                }
4146            }
4147
4148            // This is the handling for some default action.
4149            // Note that for backwards compatibility we don't do this
4150            // default handling if explicit ime options have not been given,
4151            // instead turning this into the normal enter key codes that an
4152            // app may be expecting.
4153            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
4154                View v = focusSearch(FOCUS_FORWARD);
4155                if (v != null) {
4156                    if (!v.requestFocus(FOCUS_FORWARD)) {
4157                        throw new IllegalStateException("focus search returned a view " +
4158                                "that wasn't able to take focus!");
4159                    }
4160                }
4161                return;
4162
4163            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4164                View v = focusSearch(FOCUS_BACKWARD);
4165                if (v != null) {
4166                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4167                        throw new IllegalStateException("focus search returned a view " +
4168                                "that wasn't able to take focus!");
4169                    }
4170                }
4171                return;
4172
4173            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4174                InputMethodManager imm = InputMethodManager.peekInstance();
4175                if (imm != null && imm.isActive(this)) {
4176                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4177                }
4178                return;
4179            }
4180        }
4181
4182        ViewRootImpl viewRootImpl = getViewRootImpl();
4183        if (viewRootImpl != null) {
4184            long eventTime = SystemClock.uptimeMillis();
4185            viewRootImpl.dispatchKeyFromIme(
4186                    new KeyEvent(eventTime, eventTime,
4187                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4188                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4189                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4190                    | KeyEvent.FLAG_EDITOR_ACTION));
4191            viewRootImpl.dispatchKeyFromIme(
4192                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4193                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4194                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4195                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4196                    | KeyEvent.FLAG_EDITOR_ACTION));
4197        }
4198    }
4199
4200    /**
4201     * Set the private content type of the text, which is the
4202     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4203     * field that will be filled in when creating an input connection.
4204     *
4205     * @see #getPrivateImeOptions()
4206     * @see EditorInfo#privateImeOptions
4207     * @attr ref android.R.styleable#TextView_privateImeOptions
4208     */
4209    public void setPrivateImeOptions(String type) {
4210        createEditorIfNeeded();
4211        mEditor.createInputContentTypeIfNeeded();
4212        mEditor.mInputContentType.privateImeOptions = type;
4213    }
4214
4215    /**
4216     * Get the private type of the content.
4217     *
4218     * @see #setPrivateImeOptions(String)
4219     * @see EditorInfo#privateImeOptions
4220     */
4221    public String getPrivateImeOptions() {
4222        return mEditor != null && mEditor.mInputContentType != null
4223                ? mEditor.mInputContentType.privateImeOptions : null;
4224    }
4225
4226    /**
4227     * Set the extra input data of the text, which is the
4228     * {@link EditorInfo#extras TextBoxAttribute.extras}
4229     * Bundle that will be filled in when creating an input connection.  The
4230     * given integer is the resource ID of an XML resource holding an
4231     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4232     *
4233     * @see #getInputExtras(boolean)
4234     * @see EditorInfo#extras
4235     * @attr ref android.R.styleable#TextView_editorExtras
4236     */
4237    public void setInputExtras(int xmlResId) throws XmlPullParserException, IOException {
4238        createEditorIfNeeded();
4239        XmlResourceParser parser = getResources().getXml(xmlResId);
4240        mEditor.createInputContentTypeIfNeeded();
4241        mEditor.mInputContentType.extras = new Bundle();
4242        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4243    }
4244
4245    /**
4246     * Retrieve the input extras currently associated with the text view, which
4247     * can be viewed as well as modified.
4248     *
4249     * @param create If true, the extras will be created if they don't already
4250     * exist.  Otherwise, null will be returned if none have been created.
4251     * @see #setInputExtras(int)
4252     * @see EditorInfo#extras
4253     * @attr ref android.R.styleable#TextView_editorExtras
4254     */
4255    public Bundle getInputExtras(boolean create) {
4256        if (mEditor == null && !create) return null;
4257        createEditorIfNeeded();
4258        if (mEditor.mInputContentType == null) {
4259            if (!create) return null;
4260            mEditor.createInputContentTypeIfNeeded();
4261        }
4262        if (mEditor.mInputContentType.extras == null) {
4263            if (!create) return null;
4264            mEditor.mInputContentType.extras = new Bundle();
4265        }
4266        return mEditor.mInputContentType.extras;
4267    }
4268
4269    /**
4270     * Returns the error message that was set to be displayed with
4271     * {@link #setError}, or <code>null</code> if no error was set
4272     * or if it the error was cleared by the widget after user input.
4273     */
4274    public CharSequence getError() {
4275        return mEditor == null ? null : mEditor.mError;
4276    }
4277
4278    /**
4279     * Sets the right-hand compound drawable of the TextView to the "error"
4280     * icon and sets an error message that will be displayed in a popup when
4281     * the TextView has focus.  The icon and error message will be reset to
4282     * null when any key events cause changes to the TextView's text.  If the
4283     * <code>error</code> is <code>null</code>, the error message and icon
4284     * will be cleared.
4285     */
4286    @android.view.RemotableViewMethod
4287    public void setError(CharSequence error) {
4288        if (error == null) {
4289            setError(null, null);
4290        } else {
4291            Drawable dr = getContext().getResources().
4292                getDrawable(com.android.internal.R.drawable.indicator_input_error);
4293
4294            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
4295            setError(error, dr);
4296        }
4297    }
4298
4299    /**
4300     * Sets the right-hand compound drawable of the TextView to the specified
4301     * icon and sets an error message that will be displayed in a popup when
4302     * the TextView has focus.  The icon and error message will be reset to
4303     * null when any key events cause changes to the TextView's text.  The
4304     * drawable must already have had {@link Drawable#setBounds} set on it.
4305     * If the <code>error</code> is <code>null</code>, the error message will
4306     * be cleared (and you should provide a <code>null</code> icon as well).
4307     */
4308    public void setError(CharSequence error, Drawable icon) {
4309        createEditorIfNeeded();
4310        mEditor.setError(error, icon);
4311    }
4312
4313    @Override
4314    protected boolean setFrame(int l, int t, int r, int b) {
4315        boolean result = super.setFrame(l, t, r, b);
4316
4317        if (mEditor != null) mEditor.setFrame();
4318
4319        restartMarqueeIfNeeded();
4320
4321        return result;
4322    }
4323
4324    private void restartMarqueeIfNeeded() {
4325        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4326            mRestartMarquee = false;
4327            startMarquee();
4328        }
4329    }
4330
4331    /**
4332     * Sets the list of input filters that will be used if the buffer is
4333     * Editable. Has no effect otherwise.
4334     *
4335     * @attr ref android.R.styleable#TextView_maxLength
4336     */
4337    public void setFilters(InputFilter[] filters) {
4338        if (filters == null) {
4339            throw new IllegalArgumentException();
4340        }
4341
4342        mFilters = filters;
4343
4344        if (mText instanceof Editable) {
4345            setFilters((Editable) mText, filters);
4346        }
4347    }
4348
4349    /**
4350     * Sets the list of input filters on the specified Editable,
4351     * and includes mInput in the list if it is an InputFilter.
4352     */
4353    private void setFilters(Editable e, InputFilter[] filters) {
4354        if (mEditor != null && mEditor.mKeyListener instanceof InputFilter) {
4355            InputFilter[] nf = new InputFilter[filters.length + 1];
4356
4357            System.arraycopy(filters, 0, nf, 0, filters.length);
4358            nf[filters.length] = (InputFilter) mEditor.mKeyListener;
4359
4360            e.setFilters(nf);
4361        } else {
4362            e.setFilters(filters);
4363        }
4364    }
4365
4366    /**
4367     * Returns the current list of input filters.
4368     *
4369     * @attr ref android.R.styleable#TextView_maxLength
4370     */
4371    public InputFilter[] getFilters() {
4372        return mFilters;
4373    }
4374
4375    /////////////////////////////////////////////////////////////////////////
4376
4377    private int getBoxHeight(Layout l) {
4378        Insets opticalInsets = isLayoutModeOptical(mParent) ? getOpticalInsets() : Insets.NONE;
4379        int padding = (l == mHintLayout) ?
4380                getCompoundPaddingTop() + getCompoundPaddingBottom() :
4381                getExtendedPaddingTop() + getExtendedPaddingBottom();
4382        return getMeasuredHeight() - padding + opticalInsets.top + opticalInsets.bottom;
4383    }
4384
4385    int getVerticalOffset(boolean forceNormal) {
4386        int voffset = 0;
4387        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4388
4389        Layout l = mLayout;
4390        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4391            l = mHintLayout;
4392        }
4393
4394        if (gravity != Gravity.TOP) {
4395            int boxht = getBoxHeight(l);
4396            int textht = l.getHeight();
4397
4398            if (textht < boxht) {
4399                if (gravity == Gravity.BOTTOM)
4400                    voffset = boxht - textht;
4401                else // (gravity == Gravity.CENTER_VERTICAL)
4402                    voffset = (boxht - textht) >> 1;
4403            }
4404        }
4405        return voffset;
4406    }
4407
4408    private int getBottomVerticalOffset(boolean forceNormal) {
4409        int voffset = 0;
4410        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4411
4412        Layout l = mLayout;
4413        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4414            l = mHintLayout;
4415        }
4416
4417        if (gravity != Gravity.BOTTOM) {
4418            int boxht = getBoxHeight(l);
4419            int textht = l.getHeight();
4420
4421            if (textht < boxht) {
4422                if (gravity == Gravity.TOP)
4423                    voffset = boxht - textht;
4424                else // (gravity == Gravity.CENTER_VERTICAL)
4425                    voffset = (boxht - textht) >> 1;
4426            }
4427        }
4428        return voffset;
4429    }
4430
4431    void invalidateCursorPath() {
4432        if (mHighlightPathBogus) {
4433            invalidateCursor();
4434        } else {
4435            final int horizontalPadding = getCompoundPaddingLeft();
4436            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4437
4438            if (mEditor.mCursorCount == 0) {
4439                synchronized (TEMP_RECTF) {
4440                    /*
4441                     * The reason for this concern about the thickness of the
4442                     * cursor and doing the floor/ceil on the coordinates is that
4443                     * some EditTexts (notably textfields in the Browser) have
4444                     * anti-aliased text where not all the characters are
4445                     * necessarily at integer-multiple locations.  This should
4446                     * make sure the entire cursor gets invalidated instead of
4447                     * sometimes missing half a pixel.
4448                     */
4449                    float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
4450                    if (thick < 1.0f) {
4451                        thick = 1.0f;
4452                    }
4453
4454                    thick /= 2.0f;
4455
4456                    // mHighlightPath is guaranteed to be non null at that point.
4457                    mHighlightPath.computeBounds(TEMP_RECTF, false);
4458
4459                    invalidate((int) FloatMath.floor(horizontalPadding + TEMP_RECTF.left - thick),
4460                            (int) FloatMath.floor(verticalPadding + TEMP_RECTF.top - thick),
4461                            (int) FloatMath.ceil(horizontalPadding + TEMP_RECTF.right + thick),
4462                            (int) FloatMath.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
4463                }
4464            } else {
4465                for (int i = 0; i < mEditor.mCursorCount; i++) {
4466                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4467                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
4468                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
4469                }
4470            }
4471        }
4472    }
4473
4474    void invalidateCursor() {
4475        int where = getSelectionEnd();
4476
4477        invalidateCursor(where, where, where);
4478    }
4479
4480    private void invalidateCursor(int a, int b, int c) {
4481        if (a >= 0 || b >= 0 || c >= 0) {
4482            int start = Math.min(Math.min(a, b), c);
4483            int end = Math.max(Math.max(a, b), c);
4484            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
4485        }
4486    }
4487
4488    /**
4489     * Invalidates the region of text enclosed between the start and end text offsets.
4490     */
4491    void invalidateRegion(int start, int end, boolean invalidateCursor) {
4492        if (mLayout == null) {
4493            invalidate();
4494        } else {
4495                int lineStart = mLayout.getLineForOffset(start);
4496                int top = mLayout.getLineTop(lineStart);
4497
4498                // This is ridiculous, but the descent from the line above
4499                // can hang down into the line we really want to redraw,
4500                // so we have to invalidate part of the line above to make
4501                // sure everything that needs to be redrawn really is.
4502                // (But not the whole line above, because that would cause
4503                // the same problem with the descenders on the line above it!)
4504                if (lineStart > 0) {
4505                    top -= mLayout.getLineDescent(lineStart - 1);
4506                }
4507
4508                int lineEnd;
4509
4510                if (start == end)
4511                    lineEnd = lineStart;
4512                else
4513                    lineEnd = mLayout.getLineForOffset(end);
4514
4515                int bottom = mLayout.getLineBottom(lineEnd);
4516
4517                // mEditor can be null in case selection is set programmatically.
4518                if (invalidateCursor && mEditor != null) {
4519                    for (int i = 0; i < mEditor.mCursorCount; i++) {
4520                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4521                        top = Math.min(top, bounds.top);
4522                        bottom = Math.max(bottom, bounds.bottom);
4523                    }
4524                }
4525
4526                final int compoundPaddingLeft = getCompoundPaddingLeft();
4527                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4528
4529                int left, right;
4530                if (lineStart == lineEnd && !invalidateCursor) {
4531                    left = (int) mLayout.getPrimaryHorizontal(start);
4532                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
4533                    left += compoundPaddingLeft;
4534                    right += compoundPaddingLeft;
4535                } else {
4536                    // Rectangle bounding box when the region spans several lines
4537                    left = compoundPaddingLeft;
4538                    right = getWidth() - getCompoundPaddingRight();
4539                }
4540
4541                invalidate(mScrollX + left, verticalPadding + top,
4542                        mScrollX + right, verticalPadding + bottom);
4543        }
4544    }
4545
4546    private void registerForPreDraw() {
4547        if (!mPreDrawRegistered) {
4548            getViewTreeObserver().addOnPreDrawListener(this);
4549            mPreDrawRegistered = true;
4550        }
4551    }
4552
4553    /**
4554     * {@inheritDoc}
4555     */
4556    public boolean onPreDraw() {
4557        if (mLayout == null) {
4558            assumeLayout();
4559        }
4560
4561        boolean changed = false;
4562
4563        if (mMovement != null) {
4564            /* This code also provides auto-scrolling when a cursor is moved using a
4565             * CursorController (insertion point or selection limits).
4566             * For selection, ensure start or end is visible depending on controller's state.
4567             */
4568            int curs = getSelectionEnd();
4569            // Do not create the controller if it is not already created.
4570            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
4571                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
4572                curs = getSelectionStart();
4573            }
4574
4575            /*
4576             * TODO: This should really only keep the end in view if
4577             * it already was before the text changed.  I'm not sure
4578             * of a good way to tell from here if it was.
4579             */
4580            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
4581                curs = mText.length();
4582            }
4583
4584            if (curs >= 0) {
4585                changed = bringPointIntoView(curs);
4586            }
4587        } else {
4588            changed = bringTextIntoView();
4589        }
4590
4591        // This has to be checked here since:
4592        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
4593        //   a screen rotation) since layout is not yet initialized at that point.
4594        if (mEditor != null && mEditor.mCreatedWithASelection) {
4595            mEditor.startSelectionActionMode();
4596            mEditor.mCreatedWithASelection = false;
4597        }
4598
4599        // Phone specific code (there is no ExtractEditText on tablets).
4600        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
4601        // not be set. Do the test here instead.
4602        if (this instanceof ExtractEditText && hasSelection() && mEditor != null) {
4603            mEditor.startSelectionActionMode();
4604        }
4605
4606        getViewTreeObserver().removeOnPreDrawListener(this);
4607        mPreDrawRegistered = false;
4608
4609        return !changed;
4610    }
4611
4612    @Override
4613    protected void onAttachedToWindow() {
4614        super.onAttachedToWindow();
4615
4616        mTemporaryDetach = false;
4617
4618        if (mEditor != null) mEditor.onAttachedToWindow();
4619    }
4620
4621    @Override
4622    protected void onDetachedFromWindow() {
4623        super.onDetachedFromWindow();
4624
4625        if (mPreDrawRegistered) {
4626            getViewTreeObserver().removeOnPreDrawListener(this);
4627            mPreDrawRegistered = false;
4628        }
4629
4630        resetResolvedDrawables();
4631
4632        if (mEditor != null) mEditor.onDetachedFromWindow();
4633    }
4634
4635    @Override
4636    public void onScreenStateChanged(int screenState) {
4637        super.onScreenStateChanged(screenState);
4638        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
4639    }
4640
4641    @Override
4642    protected boolean isPaddingOffsetRequired() {
4643        return mShadowRadius != 0 || mDrawables != null;
4644    }
4645
4646    @Override
4647    protected int getLeftPaddingOffset() {
4648        return getCompoundPaddingLeft() - mPaddingLeft +
4649                (int) Math.min(0, mShadowDx - mShadowRadius);
4650    }
4651
4652    @Override
4653    protected int getTopPaddingOffset() {
4654        return (int) Math.min(0, mShadowDy - mShadowRadius);
4655    }
4656
4657    @Override
4658    protected int getBottomPaddingOffset() {
4659        return (int) Math.max(0, mShadowDy + mShadowRadius);
4660    }
4661
4662    @Override
4663    protected int getRightPaddingOffset() {
4664        return -(getCompoundPaddingRight() - mPaddingRight) +
4665                (int) Math.max(0, mShadowDx + mShadowRadius);
4666    }
4667
4668    @Override
4669    protected boolean verifyDrawable(Drawable who) {
4670        final boolean verified = super.verifyDrawable(who);
4671        if (!verified && mDrawables != null) {
4672            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
4673                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom ||
4674                    who == mDrawables.mDrawableStart || who == mDrawables.mDrawableEnd;
4675        }
4676        return verified;
4677    }
4678
4679    @Override
4680    public void jumpDrawablesToCurrentState() {
4681        super.jumpDrawablesToCurrentState();
4682        if (mDrawables != null) {
4683            if (mDrawables.mDrawableLeft != null) {
4684                mDrawables.mDrawableLeft.jumpToCurrentState();
4685            }
4686            if (mDrawables.mDrawableTop != null) {
4687                mDrawables.mDrawableTop.jumpToCurrentState();
4688            }
4689            if (mDrawables.mDrawableRight != null) {
4690                mDrawables.mDrawableRight.jumpToCurrentState();
4691            }
4692            if (mDrawables.mDrawableBottom != null) {
4693                mDrawables.mDrawableBottom.jumpToCurrentState();
4694            }
4695            if (mDrawables.mDrawableStart != null) {
4696                mDrawables.mDrawableStart.jumpToCurrentState();
4697            }
4698            if (mDrawables.mDrawableEnd != null) {
4699                mDrawables.mDrawableEnd.jumpToCurrentState();
4700            }
4701        }
4702    }
4703
4704    @Override
4705    public void invalidateDrawable(Drawable drawable) {
4706        if (verifyDrawable(drawable)) {
4707            final Rect dirty = drawable.getBounds();
4708            int scrollX = mScrollX;
4709            int scrollY = mScrollY;
4710
4711            // IMPORTANT: The coordinates below are based on the coordinates computed
4712            // for each compound drawable in onDraw(). Make sure to update each section
4713            // accordingly.
4714            final TextView.Drawables drawables = mDrawables;
4715            if (drawables != null) {
4716                if (drawable == drawables.mDrawableLeft) {
4717                    final int compoundPaddingTop = getCompoundPaddingTop();
4718                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4719                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4720
4721                    scrollX += mPaddingLeft;
4722                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
4723                } else if (drawable == drawables.mDrawableRight) {
4724                    final int compoundPaddingTop = getCompoundPaddingTop();
4725                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4726                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4727
4728                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
4729                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
4730                } else if (drawable == drawables.mDrawableTop) {
4731                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4732                    final int compoundPaddingRight = getCompoundPaddingRight();
4733                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4734
4735                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
4736                    scrollY += mPaddingTop;
4737                } else if (drawable == drawables.mDrawableBottom) {
4738                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4739                    final int compoundPaddingRight = getCompoundPaddingRight();
4740                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4741
4742                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
4743                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
4744                }
4745            }
4746
4747            invalidate(dirty.left + scrollX, dirty.top + scrollY,
4748                    dirty.right + scrollX, dirty.bottom + scrollY);
4749        }
4750    }
4751
4752    @Override
4753    public boolean hasOverlappingRendering() {
4754        return (getBackground() != null || mText instanceof Spannable || hasSelection());
4755    }
4756
4757    /**
4758     * When a TextView is used to display a useful piece of information to the user (such as a
4759     * contact's address), it should be made selectable, so that the user can select and copy this
4760     * content.
4761     *
4762     * Use {@link #setTextIsSelectable(boolean)} or the
4763     * {@link android.R.styleable#TextView_textIsSelectable} XML attribute to make this TextView
4764     * selectable (text is not selectable by default).
4765     *
4766     * Note that this method simply returns the state of this flag. Although this flag has to be set
4767     * in order to select text in non-editable TextView, the content of an {@link EditText} can
4768     * always be selected, independently of the value of this flag.
4769     *
4770     * @return True if the text displayed in this TextView can be selected by the user.
4771     *
4772     * @attr ref android.R.styleable#TextView_textIsSelectable
4773     */
4774    public boolean isTextSelectable() {
4775        return mEditor == null ? false : mEditor.mTextIsSelectable;
4776    }
4777
4778    /**
4779     * Sets whether or not (default) the content of this view is selectable by the user.
4780     *
4781     * Note that this methods affect the {@link #setFocusable(boolean)},
4782     * {@link #setFocusableInTouchMode(boolean)} {@link #setClickable(boolean)} and
4783     * {@link #setLongClickable(boolean)} states and you may want to restore these if they were
4784     * customized.
4785     *
4786     * See {@link #isTextSelectable} for details.
4787     *
4788     * @param selectable Whether or not the content of this TextView should be selectable.
4789     */
4790    public void setTextIsSelectable(boolean selectable) {
4791        if (!selectable && mEditor == null) return; // false is default value with no edit data
4792
4793        createEditorIfNeeded();
4794        if (mEditor.mTextIsSelectable == selectable) return;
4795
4796        mEditor.mTextIsSelectable = selectable;
4797        setFocusableInTouchMode(selectable);
4798        setFocusable(selectable);
4799        setClickable(selectable);
4800        setLongClickable(selectable);
4801
4802        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
4803
4804        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
4805        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
4806
4807        // Called by setText above, but safer in case of future code changes
4808        mEditor.prepareCursorControllers();
4809    }
4810
4811    @Override
4812    protected int[] onCreateDrawableState(int extraSpace) {
4813        final int[] drawableState;
4814
4815        if (mSingleLine) {
4816            drawableState = super.onCreateDrawableState(extraSpace);
4817        } else {
4818            drawableState = super.onCreateDrawableState(extraSpace + 1);
4819            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
4820        }
4821
4822        if (isTextSelectable()) {
4823            // Disable pressed state, which was introduced when TextView was made clickable.
4824            // Prevents text color change.
4825            // setClickable(false) would have a similar effect, but it also disables focus changes
4826            // and long press actions, which are both needed by text selection.
4827            final int length = drawableState.length;
4828            for (int i = 0; i < length; i++) {
4829                if (drawableState[i] == R.attr.state_pressed) {
4830                    final int[] nonPressedState = new int[length - 1];
4831                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
4832                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
4833                    return nonPressedState;
4834                }
4835            }
4836        }
4837
4838        return drawableState;
4839    }
4840
4841    private Path getUpdatedHighlightPath() {
4842        Path highlight = null;
4843        Paint highlightPaint = mHighlightPaint;
4844
4845        final int selStart = getSelectionStart();
4846        final int selEnd = getSelectionEnd();
4847        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
4848            if (selStart == selEnd) {
4849                if (mEditor != null && mEditor.isCursorVisible() &&
4850                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
4851                        (2 * Editor.BLINK) < Editor.BLINK) {
4852                    if (mHighlightPathBogus) {
4853                        if (mHighlightPath == null) mHighlightPath = new Path();
4854                        mHighlightPath.reset();
4855                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
4856                        mEditor.updateCursorsPositions();
4857                        mHighlightPathBogus = false;
4858                    }
4859
4860                    // XXX should pass to skin instead of drawing directly
4861                    highlightPaint.setColor(mCurTextColor);
4862                    highlightPaint.setStyle(Paint.Style.STROKE);
4863                    highlight = mHighlightPath;
4864                }
4865            } else {
4866                if (mHighlightPathBogus) {
4867                    if (mHighlightPath == null) mHighlightPath = new Path();
4868                    mHighlightPath.reset();
4869                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4870                    mHighlightPathBogus = false;
4871                }
4872
4873                // XXX should pass to skin instead of drawing directly
4874                highlightPaint.setColor(mHighlightColor);
4875                highlightPaint.setStyle(Paint.Style.FILL);
4876
4877                highlight = mHighlightPath;
4878            }
4879        }
4880        return highlight;
4881    }
4882
4883    /**
4884     * @hide
4885     */
4886    public int getHorizontalOffsetForDrawables() {
4887        return 0;
4888    }
4889
4890    @Override
4891    protected void onDraw(Canvas canvas) {
4892        restartMarqueeIfNeeded();
4893
4894        // Draw the background for this view
4895        super.onDraw(canvas);
4896
4897        final int compoundPaddingLeft = getCompoundPaddingLeft();
4898        final int compoundPaddingTop = getCompoundPaddingTop();
4899        final int compoundPaddingRight = getCompoundPaddingRight();
4900        final int compoundPaddingBottom = getCompoundPaddingBottom();
4901        final int scrollX = mScrollX;
4902        final int scrollY = mScrollY;
4903        final int right = mRight;
4904        final int left = mLeft;
4905        final int bottom = mBottom;
4906        final int top = mTop;
4907        final boolean isLayoutRtl = isLayoutRtl();
4908        final int offset = getHorizontalOffsetForDrawables();
4909        final int leftOffset = isLayoutRtl ? 0 : offset;
4910        final int rightOffset = isLayoutRtl ? offset : 0 ;
4911
4912        final Drawables dr = mDrawables;
4913        if (dr != null) {
4914            /*
4915             * Compound, not extended, because the icon is not clipped
4916             * if the text height is smaller.
4917             */
4918
4919            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
4920            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
4921
4922            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4923            // Make sure to update invalidateDrawable() when changing this code.
4924            if (dr.mDrawableLeft != null) {
4925                canvas.save();
4926                canvas.translate(scrollX + mPaddingLeft + leftOffset,
4927                                 scrollY + compoundPaddingTop +
4928                                 (vspace - dr.mDrawableHeightLeft) / 2);
4929                dr.mDrawableLeft.draw(canvas);
4930                canvas.restore();
4931            }
4932
4933            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4934            // Make sure to update invalidateDrawable() when changing this code.
4935            if (dr.mDrawableRight != null) {
4936                canvas.save();
4937                canvas.translate(scrollX + right - left - mPaddingRight
4938                        - dr.mDrawableSizeRight - rightOffset,
4939                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
4940                dr.mDrawableRight.draw(canvas);
4941                canvas.restore();
4942            }
4943
4944            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4945            // Make sure to update invalidateDrawable() when changing this code.
4946            if (dr.mDrawableTop != null) {
4947                canvas.save();
4948                canvas.translate(scrollX + compoundPaddingLeft +
4949                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
4950                dr.mDrawableTop.draw(canvas);
4951                canvas.restore();
4952            }
4953
4954            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4955            // Make sure to update invalidateDrawable() when changing this code.
4956            if (dr.mDrawableBottom != null) {
4957                canvas.save();
4958                canvas.translate(scrollX + compoundPaddingLeft +
4959                        (hspace - dr.mDrawableWidthBottom) / 2,
4960                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
4961                dr.mDrawableBottom.draw(canvas);
4962                canvas.restore();
4963            }
4964        }
4965
4966        int color = mCurTextColor;
4967
4968        if (mLayout == null) {
4969            assumeLayout();
4970        }
4971
4972        Layout layout = mLayout;
4973
4974        if (mHint != null && mText.length() == 0) {
4975            if (mHintTextColor != null) {
4976                color = mCurHintTextColor;
4977            }
4978
4979            layout = mHintLayout;
4980        }
4981
4982        mTextPaint.setColor(color);
4983        mTextPaint.drawableState = getDrawableState();
4984
4985        canvas.save();
4986        /*  Would be faster if we didn't have to do this. Can we chop the
4987            (displayable) text so that we don't need to do this ever?
4988        */
4989
4990        int extendedPaddingTop = getExtendedPaddingTop();
4991        int extendedPaddingBottom = getExtendedPaddingBottom();
4992
4993        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4994        final int maxScrollY = mLayout.getHeight() - vspace;
4995
4996        float clipLeft = compoundPaddingLeft + scrollX;
4997        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
4998        float clipRight = right - left - compoundPaddingRight + scrollX;
4999        float clipBottom = bottom - top + scrollY -
5000                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
5001
5002        if (mShadowRadius != 0) {
5003            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
5004            clipRight += Math.max(0, mShadowDx + mShadowRadius);
5005
5006            clipTop += Math.min(0, mShadowDy - mShadowRadius);
5007            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
5008        }
5009
5010        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
5011
5012        int voffsetText = 0;
5013        int voffsetCursor = 0;
5014
5015        // translate in by our padding
5016        /* shortcircuit calling getVerticaOffset() */
5017        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5018            voffsetText = getVerticalOffset(false);
5019            voffsetCursor = getVerticalOffset(true);
5020        }
5021        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
5022
5023        final int layoutDirection = getLayoutDirection();
5024        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
5025        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
5026                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5027            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
5028                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
5029                final int width = mRight - mLeft;
5030                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
5031                final float dx = mLayout.getLineRight(0) - (width - padding);
5032                canvas.translate(isLayoutRtl ? -dx : +dx, 0.0f);
5033            }
5034
5035            if (mMarquee != null && mMarquee.isRunning()) {
5036                final float dx = -mMarquee.getScroll();
5037                canvas.translate(isLayoutRtl ? -dx : +dx, 0.0f);
5038            }
5039        }
5040
5041        final int cursorOffsetVertical = voffsetCursor - voffsetText;
5042
5043        Path highlight = getUpdatedHighlightPath();
5044        if (mEditor != null) {
5045            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
5046        } else {
5047            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5048        }
5049
5050        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
5051            final int dx = (int) mMarquee.getGhostOffset();
5052            canvas.translate(isLayoutRtl ? -dx : dx, 0.0f);
5053            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5054        }
5055
5056        canvas.restore();
5057    }
5058
5059    @Override
5060    public void getFocusedRect(Rect r) {
5061        if (mLayout == null) {
5062            super.getFocusedRect(r);
5063            return;
5064        }
5065
5066        int selEnd = getSelectionEnd();
5067        if (selEnd < 0) {
5068            super.getFocusedRect(r);
5069            return;
5070        }
5071
5072        int selStart = getSelectionStart();
5073        if (selStart < 0 || selStart >= selEnd) {
5074            int line = mLayout.getLineForOffset(selEnd);
5075            r.top = mLayout.getLineTop(line);
5076            r.bottom = mLayout.getLineBottom(line);
5077            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
5078            r.right = r.left + 4;
5079        } else {
5080            int lineStart = mLayout.getLineForOffset(selStart);
5081            int lineEnd = mLayout.getLineForOffset(selEnd);
5082            r.top = mLayout.getLineTop(lineStart);
5083            r.bottom = mLayout.getLineBottom(lineEnd);
5084            if (lineStart == lineEnd) {
5085                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
5086                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
5087            } else {
5088                // Selection extends across multiple lines -- make the focused
5089                // rect cover the entire width.
5090                if (mHighlightPathBogus) {
5091                    if (mHighlightPath == null) mHighlightPath = new Path();
5092                    mHighlightPath.reset();
5093                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5094                    mHighlightPathBogus = false;
5095                }
5096                synchronized (TEMP_RECTF) {
5097                    mHighlightPath.computeBounds(TEMP_RECTF, true);
5098                    r.left = (int)TEMP_RECTF.left-1;
5099                    r.right = (int)TEMP_RECTF.right+1;
5100                }
5101            }
5102        }
5103
5104        // Adjust for padding and gravity.
5105        int paddingLeft = getCompoundPaddingLeft();
5106        int paddingTop = getExtendedPaddingTop();
5107        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5108            paddingTop += getVerticalOffset(false);
5109        }
5110        r.offset(paddingLeft, paddingTop);
5111        int paddingBottom = getExtendedPaddingBottom();
5112        r.bottom += paddingBottom;
5113    }
5114
5115    /**
5116     * Return the number of lines of text, or 0 if the internal Layout has not
5117     * been built.
5118     */
5119    public int getLineCount() {
5120        return mLayout != null ? mLayout.getLineCount() : 0;
5121    }
5122
5123    /**
5124     * Return the baseline for the specified line (0...getLineCount() - 1)
5125     * If bounds is not null, return the top, left, right, bottom extents
5126     * of the specified line in it. If the internal Layout has not been built,
5127     * return 0 and set bounds to (0, 0, 0, 0)
5128     * @param line which line to examine (0..getLineCount() - 1)
5129     * @param bounds Optional. If not null, it returns the extent of the line
5130     * @return the Y-coordinate of the baseline
5131     */
5132    public int getLineBounds(int line, Rect bounds) {
5133        if (mLayout == null) {
5134            if (bounds != null) {
5135                bounds.set(0, 0, 0, 0);
5136            }
5137            return 0;
5138        }
5139        else {
5140            int baseline = mLayout.getLineBounds(line, bounds);
5141
5142            int voffset = getExtendedPaddingTop();
5143            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5144                voffset += getVerticalOffset(true);
5145            }
5146            if (bounds != null) {
5147                bounds.offset(getCompoundPaddingLeft(), voffset);
5148            }
5149            return baseline + voffset;
5150        }
5151    }
5152
5153    @Override
5154    public int getBaseline() {
5155        if (mLayout == null) {
5156            return super.getBaseline();
5157        }
5158
5159        int voffset = 0;
5160        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5161            voffset = getVerticalOffset(true);
5162        }
5163
5164        if (isLayoutModeOptical(mParent)) {
5165            voffset -= getOpticalInsets().top;
5166        }
5167
5168        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
5169    }
5170
5171    /**
5172     * @hide
5173     */
5174    @Override
5175    protected int getFadeTop(boolean offsetRequired) {
5176        if (mLayout == null) return 0;
5177
5178        int voffset = 0;
5179        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5180            voffset = getVerticalOffset(true);
5181        }
5182
5183        if (offsetRequired) voffset += getTopPaddingOffset();
5184
5185        return getExtendedPaddingTop() + voffset;
5186    }
5187
5188    /**
5189     * @hide
5190     */
5191    @Override
5192    protected int getFadeHeight(boolean offsetRequired) {
5193        return mLayout != null ? mLayout.getHeight() : 0;
5194    }
5195
5196    @Override
5197    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
5198        if (keyCode == KeyEvent.KEYCODE_BACK) {
5199            boolean isInSelectionMode = mEditor != null && mEditor.mSelectionActionMode != null;
5200
5201            if (isInSelectionMode) {
5202                if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
5203                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5204                    if (state != null) {
5205                        state.startTracking(event, this);
5206                    }
5207                    return true;
5208                } else if (event.getAction() == KeyEvent.ACTION_UP) {
5209                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5210                    if (state != null) {
5211                        state.handleUpEvent(event);
5212                    }
5213                    if (event.isTracking() && !event.isCanceled()) {
5214                        stopSelectionActionMode();
5215                        return true;
5216                    }
5217                }
5218            }
5219        }
5220        return super.onKeyPreIme(keyCode, event);
5221    }
5222
5223    @Override
5224    public boolean onKeyDown(int keyCode, KeyEvent event) {
5225        int which = doKeyDown(keyCode, event, null);
5226        if (which == 0) {
5227            // Go through default dispatching.
5228            return super.onKeyDown(keyCode, event);
5229        }
5230
5231        return true;
5232    }
5233
5234    @Override
5235    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
5236        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
5237
5238        int which = doKeyDown(keyCode, down, event);
5239        if (which == 0) {
5240            // Go through default dispatching.
5241            return super.onKeyMultiple(keyCode, repeatCount, event);
5242        }
5243        if (which == -1) {
5244            // Consumed the whole thing.
5245            return true;
5246        }
5247
5248        repeatCount--;
5249
5250        // We are going to dispatch the remaining events to either the input
5251        // or movement method.  To do this, we will just send a repeated stream
5252        // of down and up events until we have done the complete repeatCount.
5253        // It would be nice if those interfaces had an onKeyMultiple() method,
5254        // but adding that is a more complicated change.
5255        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
5256        if (which == 1) {
5257            // mEditor and mEditor.mInput are not null from doKeyDown
5258            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5259            while (--repeatCount > 0) {
5260                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
5261                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5262            }
5263            hideErrorIfUnchanged();
5264
5265        } else if (which == 2) {
5266            // mMovement is not null from doKeyDown
5267            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5268            while (--repeatCount > 0) {
5269                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
5270                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5271            }
5272        }
5273
5274        return true;
5275    }
5276
5277    /**
5278     * Returns true if pressing ENTER in this field advances focus instead
5279     * of inserting the character.  This is true mostly in single-line fields,
5280     * but also in mail addresses and subjects which will display on multiple
5281     * lines but where it doesn't make sense to insert newlines.
5282     */
5283    private boolean shouldAdvanceFocusOnEnter() {
5284        if (getKeyListener() == null) {
5285            return false;
5286        }
5287
5288        if (mSingleLine) {
5289            return true;
5290        }
5291
5292        if (mEditor != null &&
5293                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5294            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5295            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
5296                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
5297                return true;
5298            }
5299        }
5300
5301        return false;
5302    }
5303
5304    /**
5305     * Returns true if pressing TAB in this field advances focus instead
5306     * of inserting the character.  Insert tabs only in multi-line editors.
5307     */
5308    private boolean shouldAdvanceFocusOnTab() {
5309        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
5310                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5311            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5312            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
5313                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
5314                return false;
5315            }
5316        }
5317        return true;
5318    }
5319
5320    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
5321        if (!isEnabled()) {
5322            return 0;
5323        }
5324
5325        switch (keyCode) {
5326            case KeyEvent.KEYCODE_ENTER:
5327                if (event.hasNoModifiers()) {
5328                    // When mInputContentType is set, we know that we are
5329                    // running in a "modern" cupcake environment, so don't need
5330                    // to worry about the application trying to capture
5331                    // enter key events.
5332                    if (mEditor != null && mEditor.mInputContentType != null) {
5333                        // If there is an action listener, given them a
5334                        // chance to consume the event.
5335                        if (mEditor.mInputContentType.onEditorActionListener != null &&
5336                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5337                                this, EditorInfo.IME_NULL, event)) {
5338                            mEditor.mInputContentType.enterDown = true;
5339                            // We are consuming the enter key for them.
5340                            return -1;
5341                        }
5342                    }
5343
5344                    // If our editor should move focus when enter is pressed, or
5345                    // this is a generated event from an IME action button, then
5346                    // don't let it be inserted into the text.
5347                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5348                            || shouldAdvanceFocusOnEnter()) {
5349                        if (hasOnClickListeners()) {
5350                            return 0;
5351                        }
5352                        return -1;
5353                    }
5354                }
5355                break;
5356
5357            case KeyEvent.KEYCODE_DPAD_CENTER:
5358                if (event.hasNoModifiers()) {
5359                    if (shouldAdvanceFocusOnEnter()) {
5360                        return 0;
5361                    }
5362                }
5363                break;
5364
5365            case KeyEvent.KEYCODE_TAB:
5366                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
5367                    if (shouldAdvanceFocusOnTab()) {
5368                        return 0;
5369                    }
5370                }
5371                break;
5372
5373                // Has to be done on key down (and not on key up) to correctly be intercepted.
5374            case KeyEvent.KEYCODE_BACK:
5375                if (mEditor != null && mEditor.mSelectionActionMode != null) {
5376                    stopSelectionActionMode();
5377                    return -1;
5378                }
5379                break;
5380        }
5381
5382        if (mEditor != null && mEditor.mKeyListener != null) {
5383            resetErrorChangedFlag();
5384
5385            boolean doDown = true;
5386            if (otherEvent != null) {
5387                try {
5388                    beginBatchEdit();
5389                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
5390                            otherEvent);
5391                    hideErrorIfUnchanged();
5392                    doDown = false;
5393                    if (handled) {
5394                        return -1;
5395                    }
5396                } catch (AbstractMethodError e) {
5397                    // onKeyOther was added after 1.0, so if it isn't
5398                    // implemented we need to try to dispatch as a regular down.
5399                } finally {
5400                    endBatchEdit();
5401                }
5402            }
5403
5404            if (doDown) {
5405                beginBatchEdit();
5406                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
5407                        keyCode, event);
5408                endBatchEdit();
5409                hideErrorIfUnchanged();
5410                if (handled) return 1;
5411            }
5412        }
5413
5414        // bug 650865: sometimes we get a key event before a layout.
5415        // don't try to move around if we don't know the layout.
5416
5417        if (mMovement != null && mLayout != null) {
5418            boolean doDown = true;
5419            if (otherEvent != null) {
5420                try {
5421                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
5422                            otherEvent);
5423                    doDown = false;
5424                    if (handled) {
5425                        return -1;
5426                    }
5427                } catch (AbstractMethodError e) {
5428                    // onKeyOther was added after 1.0, so if it isn't
5429                    // implemented we need to try to dispatch as a regular down.
5430                }
5431            }
5432            if (doDown) {
5433                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
5434                    return 2;
5435            }
5436        }
5437
5438        return 0;
5439    }
5440
5441    /**
5442     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
5443     * can be recorded.
5444     * @hide
5445     */
5446    public void resetErrorChangedFlag() {
5447        /*
5448         * Keep track of what the error was before doing the input
5449         * so that if an input filter changed the error, we leave
5450         * that error showing.  Otherwise, we take down whatever
5451         * error was showing when the user types something.
5452         */
5453        if (mEditor != null) mEditor.mErrorWasChanged = false;
5454    }
5455
5456    /**
5457     * @hide
5458     */
5459    public void hideErrorIfUnchanged() {
5460        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
5461            setError(null, null);
5462        }
5463    }
5464
5465    @Override
5466    public boolean onKeyUp(int keyCode, KeyEvent event) {
5467        if (!isEnabled()) {
5468            return super.onKeyUp(keyCode, event);
5469        }
5470
5471        switch (keyCode) {
5472            case KeyEvent.KEYCODE_DPAD_CENTER:
5473                if (event.hasNoModifiers()) {
5474                    /*
5475                     * If there is a click listener, just call through to
5476                     * super, which will invoke it.
5477                     *
5478                     * If there isn't a click listener, try to show the soft
5479                     * input method.  (It will also
5480                     * call performClick(), but that won't do anything in
5481                     * this case.)
5482                     */
5483                    if (!hasOnClickListeners()) {
5484                        if (mMovement != null && mText instanceof Editable
5485                                && mLayout != null && onCheckIsTextEditor()) {
5486                            InputMethodManager imm = InputMethodManager.peekInstance();
5487                            viewClicked(imm);
5488                            if (imm != null && getShowSoftInputOnFocus()) {
5489                                imm.showSoftInput(this, 0);
5490                            }
5491                        }
5492                    }
5493                }
5494                return super.onKeyUp(keyCode, event);
5495
5496            case KeyEvent.KEYCODE_ENTER:
5497                if (event.hasNoModifiers()) {
5498                    if (mEditor != null && mEditor.mInputContentType != null
5499                            && mEditor.mInputContentType.onEditorActionListener != null
5500                            && mEditor.mInputContentType.enterDown) {
5501                        mEditor.mInputContentType.enterDown = false;
5502                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5503                                this, EditorInfo.IME_NULL, event)) {
5504                            return true;
5505                        }
5506                    }
5507
5508                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5509                            || shouldAdvanceFocusOnEnter()) {
5510                        /*
5511                         * If there is a click listener, just call through to
5512                         * super, which will invoke it.
5513                         *
5514                         * If there isn't a click listener, try to advance focus,
5515                         * but still call through to super, which will reset the
5516                         * pressed state and longpress state.  (It will also
5517                         * call performClick(), but that won't do anything in
5518                         * this case.)
5519                         */
5520                        if (!hasOnClickListeners()) {
5521                            View v = focusSearch(FOCUS_DOWN);
5522
5523                            if (v != null) {
5524                                if (!v.requestFocus(FOCUS_DOWN)) {
5525                                    throw new IllegalStateException(
5526                                            "focus search returned a view " +
5527                                            "that wasn't able to take focus!");
5528                                }
5529
5530                                /*
5531                                 * Return true because we handled the key; super
5532                                 * will return false because there was no click
5533                                 * listener.
5534                                 */
5535                                super.onKeyUp(keyCode, event);
5536                                return true;
5537                            } else if ((event.getFlags()
5538                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
5539                                // No target for next focus, but make sure the IME
5540                                // if this came from it.
5541                                InputMethodManager imm = InputMethodManager.peekInstance();
5542                                if (imm != null && imm.isActive(this)) {
5543                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
5544                                }
5545                            }
5546                        }
5547                    }
5548                    return super.onKeyUp(keyCode, event);
5549                }
5550                break;
5551        }
5552
5553        if (mEditor != null && mEditor.mKeyListener != null)
5554            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
5555                return true;
5556
5557        if (mMovement != null && mLayout != null)
5558            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
5559                return true;
5560
5561        return super.onKeyUp(keyCode, event);
5562    }
5563
5564    @Override
5565    public boolean onCheckIsTextEditor() {
5566        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
5567    }
5568
5569    @Override
5570    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
5571        if (onCheckIsTextEditor() && isEnabled()) {
5572            mEditor.createInputMethodStateIfNeeded();
5573            outAttrs.inputType = getInputType();
5574            if (mEditor.mInputContentType != null) {
5575                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
5576                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
5577                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
5578                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
5579                outAttrs.extras = mEditor.mInputContentType.extras;
5580            } else {
5581                outAttrs.imeOptions = EditorInfo.IME_NULL;
5582            }
5583            if (focusSearch(FOCUS_DOWN) != null) {
5584                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
5585            }
5586            if (focusSearch(FOCUS_UP) != null) {
5587                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
5588            }
5589            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
5590                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
5591                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
5592                    // An action has not been set, but the enter key will move to
5593                    // the next focus, so set the action to that.
5594                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
5595                } else {
5596                    // An action has not been set, and there is no focus to move
5597                    // to, so let's just supply a "done" action.
5598                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
5599                }
5600                if (!shouldAdvanceFocusOnEnter()) {
5601                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5602                }
5603            }
5604            if (isMultilineInputType(outAttrs.inputType)) {
5605                // Multi-line text editors should always show an enter key.
5606                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5607            }
5608            outAttrs.hintText = mHint;
5609            if (mText instanceof Editable) {
5610                InputConnection ic = new EditableInputConnection(this);
5611                outAttrs.initialSelStart = getSelectionStart();
5612                outAttrs.initialSelEnd = getSelectionEnd();
5613                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
5614                return ic;
5615            }
5616        }
5617        return null;
5618    }
5619
5620    /**
5621     * If this TextView contains editable content, extract a portion of it
5622     * based on the information in <var>request</var> in to <var>outText</var>.
5623     * @return Returns true if the text was successfully extracted, else false.
5624     */
5625    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
5626        createEditorIfNeeded();
5627        return mEditor.extractText(request, outText);
5628    }
5629
5630    /**
5631     * This is used to remove all style-impacting spans from text before new
5632     * extracted text is being replaced into it, so that we don't have any
5633     * lingering spans applied during the replace.
5634     */
5635    static void removeParcelableSpans(Spannable spannable, int start, int end) {
5636        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
5637        int i = spans.length;
5638        while (i > 0) {
5639            i--;
5640            spannable.removeSpan(spans[i]);
5641        }
5642    }
5643
5644    /**
5645     * Apply to this text view the given extracted text, as previously
5646     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
5647     */
5648    public void setExtractedText(ExtractedText text) {
5649        Editable content = getEditableText();
5650        if (text.text != null) {
5651            if (content == null) {
5652                setText(text.text, TextView.BufferType.EDITABLE);
5653            } else if (text.partialStartOffset < 0) {
5654                removeParcelableSpans(content, 0, content.length());
5655                content.replace(0, content.length(), text.text);
5656            } else {
5657                final int N = content.length();
5658                int start = text.partialStartOffset;
5659                if (start > N) start = N;
5660                int end = text.partialEndOffset;
5661                if (end > N) end = N;
5662                removeParcelableSpans(content, start, end);
5663                content.replace(start, end, text.text);
5664            }
5665        }
5666
5667        // Now set the selection position...  make sure it is in range, to
5668        // avoid crashes.  If this is a partial update, it is possible that
5669        // the underlying text may have changed, causing us problems here.
5670        // Also we just don't want to trust clients to do the right thing.
5671        Spannable sp = (Spannable)getText();
5672        final int N = sp.length();
5673        int start = text.selectionStart;
5674        if (start < 0) start = 0;
5675        else if (start > N) start = N;
5676        int end = text.selectionEnd;
5677        if (end < 0) end = 0;
5678        else if (end > N) end = N;
5679        Selection.setSelection(sp, start, end);
5680
5681        // Finally, update the selection mode.
5682        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
5683            MetaKeyKeyListener.startSelecting(this, sp);
5684        } else {
5685            MetaKeyKeyListener.stopSelecting(this, sp);
5686        }
5687    }
5688
5689    /**
5690     * @hide
5691     */
5692    public void setExtracting(ExtractedTextRequest req) {
5693        if (mEditor.mInputMethodState != null) {
5694            mEditor.mInputMethodState.mExtractedTextRequest = req;
5695        }
5696        // This would stop a possible selection mode, but no such mode is started in case
5697        // extracted mode will start. Some text is selected though, and will trigger an action mode
5698        // in the extracted view.
5699        mEditor.hideControllers();
5700    }
5701
5702    /**
5703     * Called by the framework in response to a text completion from
5704     * the current input method, provided by it calling
5705     * {@link InputConnection#commitCompletion
5706     * InputConnection.commitCompletion()}.  The default implementation does
5707     * nothing; text views that are supporting auto-completion should override
5708     * this to do their desired behavior.
5709     *
5710     * @param text The auto complete text the user has selected.
5711     */
5712    public void onCommitCompletion(CompletionInfo text) {
5713        // intentionally empty
5714    }
5715
5716    /**
5717     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
5718     * a dictionnary) from the current input method, provided by it calling
5719     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
5720     * implementation flashes the background of the corrected word to provide feedback to the user.
5721     *
5722     * @param info The auto correct info about the text that was corrected.
5723     */
5724    public void onCommitCorrection(CorrectionInfo info) {
5725        if (mEditor != null) mEditor.onCommitCorrection(info);
5726    }
5727
5728    public void beginBatchEdit() {
5729        if (mEditor != null) mEditor.beginBatchEdit();
5730    }
5731
5732    public void endBatchEdit() {
5733        if (mEditor != null) mEditor.endBatchEdit();
5734    }
5735
5736    /**
5737     * Called by the framework in response to a request to begin a batch
5738     * of edit operations through a call to link {@link #beginBatchEdit()}.
5739     */
5740    public void onBeginBatchEdit() {
5741        // intentionally empty
5742    }
5743
5744    /**
5745     * Called by the framework in response to a request to end a batch
5746     * of edit operations through a call to link {@link #endBatchEdit}.
5747     */
5748    public void onEndBatchEdit() {
5749        // intentionally empty
5750    }
5751
5752    /**
5753     * Called by the framework in response to a private command from the
5754     * current method, provided by it calling
5755     * {@link InputConnection#performPrivateCommand
5756     * InputConnection.performPrivateCommand()}.
5757     *
5758     * @param action The action name of the command.
5759     * @param data Any additional data for the command.  This may be null.
5760     * @return Return true if you handled the command, else false.
5761     */
5762    public boolean onPrivateIMECommand(String action, Bundle data) {
5763        return false;
5764    }
5765
5766    private void nullLayouts() {
5767        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
5768            mSavedLayout = (BoringLayout) mLayout;
5769        }
5770        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
5771            mSavedHintLayout = (BoringLayout) mHintLayout;
5772        }
5773
5774        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
5775
5776        mBoring = mHintBoring = null;
5777
5778        // Since it depends on the value of mLayout
5779        if (mEditor != null) mEditor.prepareCursorControllers();
5780    }
5781
5782    /**
5783     * Make a new Layout based on the already-measured size of the view,
5784     * on the assumption that it was measured correctly at some point.
5785     */
5786    private void assumeLayout() {
5787        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5788
5789        if (width < 1) {
5790            width = 0;
5791        }
5792
5793        int physicalWidth = width;
5794
5795        if (mHorizontallyScrolling) {
5796            width = VERY_WIDE;
5797        }
5798
5799        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
5800                      physicalWidth, false);
5801    }
5802
5803    private Layout.Alignment getLayoutAlignment() {
5804        Layout.Alignment alignment;
5805        switch (getTextAlignment()) {
5806            case TEXT_ALIGNMENT_GRAVITY:
5807                switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
5808                    case Gravity.START:
5809                        alignment = Layout.Alignment.ALIGN_NORMAL;
5810                        break;
5811                    case Gravity.END:
5812                        alignment = Layout.Alignment.ALIGN_OPPOSITE;
5813                        break;
5814                    case Gravity.LEFT:
5815                        alignment = Layout.Alignment.ALIGN_LEFT;
5816                        break;
5817                    case Gravity.RIGHT:
5818                        alignment = Layout.Alignment.ALIGN_RIGHT;
5819                        break;
5820                    case Gravity.CENTER_HORIZONTAL:
5821                        alignment = Layout.Alignment.ALIGN_CENTER;
5822                        break;
5823                    default:
5824                        alignment = Layout.Alignment.ALIGN_NORMAL;
5825                        break;
5826                }
5827                break;
5828            case TEXT_ALIGNMENT_TEXT_START:
5829                alignment = Layout.Alignment.ALIGN_NORMAL;
5830                break;
5831            case TEXT_ALIGNMENT_TEXT_END:
5832                alignment = Layout.Alignment.ALIGN_OPPOSITE;
5833                break;
5834            case TEXT_ALIGNMENT_CENTER:
5835                alignment = Layout.Alignment.ALIGN_CENTER;
5836                break;
5837            case TEXT_ALIGNMENT_VIEW_START:
5838                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
5839                        Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
5840                break;
5841            case TEXT_ALIGNMENT_VIEW_END:
5842                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
5843                        Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
5844                break;
5845            case TEXT_ALIGNMENT_INHERIT:
5846                // This should never happen as we have already resolved the text alignment
5847                // but better safe than sorry so we just fall through
5848            default:
5849                alignment = Layout.Alignment.ALIGN_NORMAL;
5850                break;
5851        }
5852        return alignment;
5853    }
5854
5855    /**
5856     * The width passed in is now the desired layout width,
5857     * not the full view width with padding.
5858     * {@hide}
5859     */
5860    protected void makeNewLayout(int wantWidth, int hintWidth,
5861                                 BoringLayout.Metrics boring,
5862                                 BoringLayout.Metrics hintBoring,
5863                                 int ellipsisWidth, boolean bringIntoView) {
5864        stopMarquee();
5865
5866        // Update "old" cached values
5867        mOldMaximum = mMaximum;
5868        mOldMaxMode = mMaxMode;
5869
5870        mHighlightPathBogus = true;
5871
5872        if (wantWidth < 0) {
5873            wantWidth = 0;
5874        }
5875        if (hintWidth < 0) {
5876            hintWidth = 0;
5877        }
5878
5879        Layout.Alignment alignment = getLayoutAlignment();
5880        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
5881        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
5882                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
5883        TruncateAt effectiveEllipsize = mEllipsize;
5884        if (mEllipsize == TruncateAt.MARQUEE &&
5885                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5886            effectiveEllipsize = TruncateAt.END_SMALL;
5887        }
5888
5889        if (mTextDir == null) {
5890            mTextDir = getTextDirectionHeuristic();
5891        }
5892
5893        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
5894                effectiveEllipsize, effectiveEllipsize == mEllipsize);
5895        if (switchEllipsize) {
5896            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
5897                    TruncateAt.END : TruncateAt.MARQUEE;
5898            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
5899                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
5900        }
5901
5902        shouldEllipsize = mEllipsize != null;
5903        mHintLayout = null;
5904
5905        if (mHint != null) {
5906            if (shouldEllipsize) hintWidth = wantWidth;
5907
5908            if (hintBoring == UNKNOWN_BORING) {
5909                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
5910                                                   mHintBoring);
5911                if (hintBoring != null) {
5912                    mHintBoring = hintBoring;
5913                }
5914            }
5915
5916            if (hintBoring != null) {
5917                if (hintBoring.width <= hintWidth &&
5918                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
5919                    if (mSavedHintLayout != null) {
5920                        mHintLayout = mSavedHintLayout.
5921                                replaceOrMake(mHint, mTextPaint,
5922                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5923                                hintBoring, mIncludePad);
5924                    } else {
5925                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5926                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5927                                hintBoring, mIncludePad);
5928                    }
5929
5930                    mSavedHintLayout = (BoringLayout) mHintLayout;
5931                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
5932                    if (mSavedHintLayout != null) {
5933                        mHintLayout = mSavedHintLayout.
5934                                replaceOrMake(mHint, mTextPaint,
5935                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5936                                hintBoring, mIncludePad, mEllipsize,
5937                                ellipsisWidth);
5938                    } else {
5939                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5940                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5941                                hintBoring, mIncludePad, mEllipsize,
5942                                ellipsisWidth);
5943                    }
5944                } else if (shouldEllipsize) {
5945                    mHintLayout = new StaticLayout(mHint,
5946                                0, mHint.length(),
5947                                mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5948                                mSpacingAdd, mIncludePad, mEllipsize,
5949                                ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5950                } else {
5951                    mHintLayout = new StaticLayout(mHint, mTextPaint,
5952                            hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5953                            mIncludePad);
5954                }
5955            } else if (shouldEllipsize) {
5956                mHintLayout = new StaticLayout(mHint,
5957                            0, mHint.length(),
5958                            mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5959                            mSpacingAdd, mIncludePad, mEllipsize,
5960                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5961            } else {
5962                mHintLayout = new StaticLayout(mHint, mTextPaint,
5963                        hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5964                        mIncludePad);
5965            }
5966        }
5967
5968        if (bringIntoView) {
5969            registerForPreDraw();
5970        }
5971
5972        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5973            if (!compressText(ellipsisWidth)) {
5974                final int height = mLayoutParams.height;
5975                // If the size of the view does not depend on the size of the text, try to
5976                // start the marquee immediately
5977                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
5978                    startMarquee();
5979                } else {
5980                    // Defer the start of the marquee until we know our width (see setFrame())
5981                    mRestartMarquee = true;
5982                }
5983            }
5984        }
5985
5986        // CursorControllers need a non-null mLayout
5987        if (mEditor != null) mEditor.prepareCursorControllers();
5988    }
5989
5990    private Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
5991            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
5992            boolean useSaved) {
5993        Layout result = null;
5994        if (mText instanceof Spannable) {
5995            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
5996                    alignment, mTextDir, mSpacingMult,
5997                    mSpacingAdd, mIncludePad, getKeyListener() == null ? effectiveEllipsize : null,
5998                            ellipsisWidth);
5999        } else {
6000            if (boring == UNKNOWN_BORING) {
6001                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6002                if (boring != null) {
6003                    mBoring = boring;
6004                }
6005            }
6006
6007            if (boring != null) {
6008                if (boring.width <= wantWidth &&
6009                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
6010                    if (useSaved && mSavedLayout != null) {
6011                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6012                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6013                                boring, mIncludePad);
6014                    } else {
6015                        result = BoringLayout.make(mTransformed, mTextPaint,
6016                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6017                                boring, mIncludePad);
6018                    }
6019
6020                    if (useSaved) {
6021                        mSavedLayout = (BoringLayout) result;
6022                    }
6023                } else if (shouldEllipsize && boring.width <= wantWidth) {
6024                    if (useSaved && mSavedLayout != null) {
6025                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6026                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6027                                boring, mIncludePad, effectiveEllipsize,
6028                                ellipsisWidth);
6029                    } else {
6030                        result = BoringLayout.make(mTransformed, mTextPaint,
6031                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6032                                boring, mIncludePad, effectiveEllipsize,
6033                                ellipsisWidth);
6034                    }
6035                } else if (shouldEllipsize) {
6036                    result = new StaticLayout(mTransformed,
6037                            0, mTransformed.length(),
6038                            mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
6039                            mSpacingAdd, mIncludePad, effectiveEllipsize,
6040                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6041                } else {
6042                    result = new StaticLayout(mTransformed, mTextPaint,
6043                            wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
6044                            mIncludePad);
6045                }
6046            } else if (shouldEllipsize) {
6047                result = new StaticLayout(mTransformed,
6048                        0, mTransformed.length(),
6049                        mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
6050                        mSpacingAdd, mIncludePad, effectiveEllipsize,
6051                        ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6052            } else {
6053                result = new StaticLayout(mTransformed, mTextPaint,
6054                        wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
6055                        mIncludePad);
6056            }
6057        }
6058        return result;
6059    }
6060
6061    private boolean compressText(float width) {
6062        if (isHardwareAccelerated()) return false;
6063
6064        // Only compress the text if it hasn't been compressed by the previous pass
6065        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
6066                mTextPaint.getTextScaleX() == 1.0f) {
6067            final float textWidth = mLayout.getLineWidth(0);
6068            final float overflow = (textWidth + 1.0f - width) / width;
6069            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
6070                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
6071                post(new Runnable() {
6072                    public void run() {
6073                        requestLayout();
6074                    }
6075                });
6076                return true;
6077            }
6078        }
6079
6080        return false;
6081    }
6082
6083    private static int desired(Layout layout) {
6084        int n = layout.getLineCount();
6085        CharSequence text = layout.getText();
6086        float max = 0;
6087
6088        // if any line was wrapped, we can't use it.
6089        // but it's ok for the last line not to have a newline
6090
6091        for (int i = 0; i < n - 1; i++) {
6092            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
6093                return -1;
6094        }
6095
6096        for (int i = 0; i < n; i++) {
6097            max = Math.max(max, layout.getLineWidth(i));
6098        }
6099
6100        return (int) FloatMath.ceil(max);
6101    }
6102
6103    /**
6104     * Set whether the TextView includes extra top and bottom padding to make
6105     * room for accents that go above the normal ascent and descent.
6106     * The default is true.
6107     *
6108     * @see #getIncludeFontPadding()
6109     *
6110     * @attr ref android.R.styleable#TextView_includeFontPadding
6111     */
6112    public void setIncludeFontPadding(boolean includepad) {
6113        if (mIncludePad != includepad) {
6114            mIncludePad = includepad;
6115
6116            if (mLayout != null) {
6117                nullLayouts();
6118                requestLayout();
6119                invalidate();
6120            }
6121        }
6122    }
6123
6124    /**
6125     * Gets whether the TextView includes extra top and bottom padding to make
6126     * room for accents that go above the normal ascent and descent.
6127     *
6128     * @see #setIncludeFontPadding(boolean)
6129     *
6130     * @attr ref android.R.styleable#TextView_includeFontPadding
6131     */
6132    public boolean getIncludeFontPadding() {
6133        return mIncludePad;
6134    }
6135
6136    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
6137
6138    @Override
6139    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
6140        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
6141        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
6142        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
6143        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
6144
6145        int width;
6146        int height;
6147
6148        BoringLayout.Metrics boring = UNKNOWN_BORING;
6149        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
6150
6151        if (mTextDir == null) {
6152            getTextDirectionHeuristic();
6153        }
6154
6155        int des = -1;
6156        boolean fromexisting = false;
6157
6158        if (widthMode == MeasureSpec.EXACTLY) {
6159            // Parent has told us how big to be. So be it.
6160            width = widthSize;
6161        } else {
6162            if (mLayout != null && mEllipsize == null) {
6163                des = desired(mLayout);
6164            }
6165
6166            if (des < 0) {
6167                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6168                if (boring != null) {
6169                    mBoring = boring;
6170                }
6171            } else {
6172                fromexisting = true;
6173            }
6174
6175            if (boring == null || boring == UNKNOWN_BORING) {
6176                if (des < 0) {
6177                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
6178                }
6179                width = des;
6180            } else {
6181                width = boring.width;
6182            }
6183
6184            final Drawables dr = mDrawables;
6185            if (dr != null) {
6186                width = Math.max(width, dr.mDrawableWidthTop);
6187                width = Math.max(width, dr.mDrawableWidthBottom);
6188            }
6189
6190            if (mHint != null) {
6191                int hintDes = -1;
6192                int hintWidth;
6193
6194                if (mHintLayout != null && mEllipsize == null) {
6195                    hintDes = desired(mHintLayout);
6196                }
6197
6198                if (hintDes < 0) {
6199                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
6200                    if (hintBoring != null) {
6201                        mHintBoring = hintBoring;
6202                    }
6203                }
6204
6205                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
6206                    if (hintDes < 0) {
6207                        hintDes = (int) FloatMath.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
6208                    }
6209                    hintWidth = hintDes;
6210                } else {
6211                    hintWidth = hintBoring.width;
6212                }
6213
6214                if (hintWidth > width) {
6215                    width = hintWidth;
6216                }
6217            }
6218
6219            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
6220
6221            if (mMaxWidthMode == EMS) {
6222                width = Math.min(width, mMaxWidth * getLineHeight());
6223            } else {
6224                width = Math.min(width, mMaxWidth);
6225            }
6226
6227            if (mMinWidthMode == EMS) {
6228                width = Math.max(width, mMinWidth * getLineHeight());
6229            } else {
6230                width = Math.max(width, mMinWidth);
6231            }
6232
6233            // Check against our minimum width
6234            width = Math.max(width, getSuggestedMinimumWidth());
6235
6236            if (widthMode == MeasureSpec.AT_MOST) {
6237                width = Math.min(widthSize, width);
6238            }
6239        }
6240
6241        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
6242        int unpaddedWidth = want;
6243
6244        if (mHorizontallyScrolling) want = VERY_WIDE;
6245
6246        int hintWant = want;
6247        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
6248
6249        if (mLayout == null) {
6250            makeNewLayout(want, hintWant, boring, hintBoring,
6251                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6252        } else {
6253            final boolean layoutChanged = (mLayout.getWidth() != want) ||
6254                    (hintWidth != hintWant) ||
6255                    (mLayout.getEllipsizedWidth() !=
6256                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
6257
6258            final boolean widthChanged = (mHint == null) &&
6259                    (mEllipsize == null) &&
6260                    (want > mLayout.getWidth()) &&
6261                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
6262
6263            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
6264
6265            if (layoutChanged || maximumChanged) {
6266                if (!maximumChanged && widthChanged) {
6267                    mLayout.increaseWidthTo(want);
6268                } else {
6269                    makeNewLayout(want, hintWant, boring, hintBoring,
6270                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6271                }
6272            } else {
6273                // Nothing has changed
6274            }
6275        }
6276
6277        if (heightMode == MeasureSpec.EXACTLY) {
6278            // Parent has told us how big to be. So be it.
6279            height = heightSize;
6280            mDesiredHeightAtMeasure = -1;
6281        } else {
6282            int desired = getDesiredHeight();
6283
6284            height = desired;
6285            mDesiredHeightAtMeasure = desired;
6286
6287            if (heightMode == MeasureSpec.AT_MOST) {
6288                height = Math.min(desired, heightSize);
6289            }
6290        }
6291
6292        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
6293        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
6294            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
6295        }
6296
6297        /*
6298         * We didn't let makeNewLayout() register to bring the cursor into view,
6299         * so do it here if there is any possibility that it is needed.
6300         */
6301        if (mMovement != null ||
6302            mLayout.getWidth() > unpaddedWidth ||
6303            mLayout.getHeight() > unpaddedHeight) {
6304            registerForPreDraw();
6305        } else {
6306            scrollTo(0, 0);
6307        }
6308
6309        setMeasuredDimension(width, height);
6310    }
6311
6312    private int getDesiredHeight() {
6313        return Math.max(
6314                getDesiredHeight(mLayout, true),
6315                getDesiredHeight(mHintLayout, mEllipsize != null));
6316    }
6317
6318    private int getDesiredHeight(Layout layout, boolean cap) {
6319        if (layout == null) {
6320            return 0;
6321        }
6322
6323        int linecount = layout.getLineCount();
6324        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
6325        int desired = layout.getLineTop(linecount);
6326
6327        final Drawables dr = mDrawables;
6328        if (dr != null) {
6329            desired = Math.max(desired, dr.mDrawableHeightLeft);
6330            desired = Math.max(desired, dr.mDrawableHeightRight);
6331        }
6332
6333        desired += pad;
6334
6335        if (mMaxMode == LINES) {
6336            /*
6337             * Don't cap the hint to a certain number of lines.
6338             * (Do cap it, though, if we have a maximum pixel height.)
6339             */
6340            if (cap) {
6341                if (linecount > mMaximum) {
6342                    desired = layout.getLineTop(mMaximum);
6343
6344                    if (dr != null) {
6345                        desired = Math.max(desired, dr.mDrawableHeightLeft);
6346                        desired = Math.max(desired, dr.mDrawableHeightRight);
6347                    }
6348
6349                    desired += pad;
6350                    linecount = mMaximum;
6351                }
6352            }
6353        } else {
6354            desired = Math.min(desired, mMaximum);
6355        }
6356
6357        if (mMinMode == LINES) {
6358            if (linecount < mMinimum) {
6359                desired += getLineHeight() * (mMinimum - linecount);
6360            }
6361        } else {
6362            desired = Math.max(desired, mMinimum);
6363        }
6364
6365        // Check against our minimum height
6366        desired = Math.max(desired, getSuggestedMinimumHeight());
6367
6368        return desired;
6369    }
6370
6371    /**
6372     * Check whether a change to the existing text layout requires a
6373     * new view layout.
6374     */
6375    private void checkForResize() {
6376        boolean sizeChanged = false;
6377
6378        if (mLayout != null) {
6379            // Check if our width changed
6380            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
6381                sizeChanged = true;
6382                invalidate();
6383            }
6384
6385            // Check if our height changed
6386            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
6387                int desiredHeight = getDesiredHeight();
6388
6389                if (desiredHeight != this.getHeight()) {
6390                    sizeChanged = true;
6391                }
6392            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
6393                if (mDesiredHeightAtMeasure >= 0) {
6394                    int desiredHeight = getDesiredHeight();
6395
6396                    if (desiredHeight != mDesiredHeightAtMeasure) {
6397                        sizeChanged = true;
6398                    }
6399                }
6400            }
6401        }
6402
6403        if (sizeChanged) {
6404            requestLayout();
6405            // caller will have already invalidated
6406        }
6407    }
6408
6409    /**
6410     * Check whether entirely new text requires a new view layout
6411     * or merely a new text layout.
6412     */
6413    private void checkForRelayout() {
6414        // If we have a fixed width, we can just swap in a new text layout
6415        // if the text height stays the same or if the view height is fixed.
6416
6417        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
6418                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
6419                (mHint == null || mHintLayout != null) &&
6420                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
6421            // Static width, so try making a new text layout.
6422
6423            int oldht = mLayout.getHeight();
6424            int want = mLayout.getWidth();
6425            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
6426
6427            /*
6428             * No need to bring the text into view, since the size is not
6429             * changing (unless we do the requestLayout(), in which case it
6430             * will happen at measure).
6431             */
6432            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
6433                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
6434                          false);
6435
6436            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
6437                // In a fixed-height view, so use our new text layout.
6438                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
6439                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
6440                    invalidate();
6441                    return;
6442                }
6443
6444                // Dynamic height, but height has stayed the same,
6445                // so use our new text layout.
6446                if (mLayout.getHeight() == oldht &&
6447                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
6448                    invalidate();
6449                    return;
6450                }
6451            }
6452
6453            // We lose: the height has changed and we have a dynamic height.
6454            // Request a new view layout using our new text layout.
6455            requestLayout();
6456            invalidate();
6457        } else {
6458            // Dynamic width, so we have no choice but to request a new
6459            // view layout with a new text layout.
6460            nullLayouts();
6461            requestLayout();
6462            invalidate();
6463        }
6464    }
6465
6466    @Override
6467    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
6468        super.onLayout(changed, left, top, right, bottom);
6469        if (mDeferScroll >= 0) {
6470            int curs = mDeferScroll;
6471            mDeferScroll = -1;
6472            bringPointIntoView(Math.min(curs, mText.length()));
6473        }
6474    }
6475
6476    private boolean isShowingHint() {
6477        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
6478    }
6479
6480    /**
6481     * Returns true if anything changed.
6482     */
6483    private boolean bringTextIntoView() {
6484        Layout layout = isShowingHint() ? mHintLayout : mLayout;
6485        int line = 0;
6486        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6487            line = layout.getLineCount() - 1;
6488        }
6489
6490        Layout.Alignment a = layout.getParagraphAlignment(line);
6491        int dir = layout.getParagraphDirection(line);
6492        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6493        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6494        int ht = layout.getHeight();
6495
6496        int scrollx, scrolly;
6497
6498        // Convert to left, center, or right alignment.
6499        if (a == Layout.Alignment.ALIGN_NORMAL) {
6500            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
6501                Layout.Alignment.ALIGN_RIGHT;
6502        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
6503            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
6504                Layout.Alignment.ALIGN_LEFT;
6505        }
6506
6507        if (a == Layout.Alignment.ALIGN_CENTER) {
6508            /*
6509             * Keep centered if possible, or, if it is too wide to fit,
6510             * keep leading edge in view.
6511             */
6512
6513            int left = (int) FloatMath.floor(layout.getLineLeft(line));
6514            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6515
6516            if (right - left < hspace) {
6517                scrollx = (right + left) / 2 - hspace / 2;
6518            } else {
6519                if (dir < 0) {
6520                    scrollx = right - hspace;
6521                } else {
6522                    scrollx = left;
6523                }
6524            }
6525        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
6526            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6527            scrollx = right - hspace;
6528        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
6529            scrollx = (int) FloatMath.floor(layout.getLineLeft(line));
6530        }
6531
6532        if (ht < vspace) {
6533            scrolly = 0;
6534        } else {
6535            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6536                scrolly = ht - vspace;
6537            } else {
6538                scrolly = 0;
6539            }
6540        }
6541
6542        if (scrollx != mScrollX || scrolly != mScrollY) {
6543            scrollTo(scrollx, scrolly);
6544            return true;
6545        } else {
6546            return false;
6547        }
6548    }
6549
6550    /**
6551     * Move the point, specified by the offset, into the view if it is needed.
6552     * This has to be called after layout. Returns true if anything changed.
6553     */
6554    public boolean bringPointIntoView(int offset) {
6555        if (isLayoutRequested()) {
6556            mDeferScroll = offset;
6557            return false;
6558        }
6559        boolean changed = false;
6560
6561        Layout layout = isShowingHint() ? mHintLayout: mLayout;
6562
6563        if (layout == null) return changed;
6564
6565        int line = layout.getLineForOffset(offset);
6566
6567        int grav;
6568
6569        switch (layout.getParagraphAlignment(line)) {
6570            case ALIGN_LEFT:
6571                grav = 1;
6572                break;
6573            case ALIGN_RIGHT:
6574                grav = -1;
6575                break;
6576            case ALIGN_NORMAL:
6577                grav = layout.getParagraphDirection(line);
6578                break;
6579            case ALIGN_OPPOSITE:
6580                grav = -layout.getParagraphDirection(line);
6581                break;
6582            case ALIGN_CENTER:
6583            default:
6584                grav = 0;
6585                break;
6586        }
6587
6588        // We only want to clamp the cursor to fit within the layout width
6589        // in left-to-right modes, because in a right to left alignment,
6590        // we want to scroll to keep the line-right on the screen, as other
6591        // lines are likely to have text flush with the right margin, which
6592        // we want to keep visible.
6593        // A better long-term solution would probably be to measure both
6594        // the full line and a blank-trimmed version, and, for example, use
6595        // the latter measurement for centering and right alignment, but for
6596        // the time being we only implement the cursor clamping in left to
6597        // right where it is most likely to be annoying.
6598        final boolean clamped = grav > 0;
6599        // FIXME: Is it okay to truncate this, or should we round?
6600        final int x = (int)layout.getPrimaryHorizontal(offset, clamped);
6601        final int top = layout.getLineTop(line);
6602        final int bottom = layout.getLineTop(line + 1);
6603
6604        int left = (int) FloatMath.floor(layout.getLineLeft(line));
6605        int right = (int) FloatMath.ceil(layout.getLineRight(line));
6606        int ht = layout.getHeight();
6607
6608        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6609        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6610        if (!mHorizontallyScrolling && right - left > hspace && right > x) {
6611            // If cursor has been clamped, make sure we don't scroll.
6612            right = Math.max(x, left + hspace);
6613        }
6614
6615        int hslack = (bottom - top) / 2;
6616        int vslack = hslack;
6617
6618        if (vslack > vspace / 4)
6619            vslack = vspace / 4;
6620        if (hslack > hspace / 4)
6621            hslack = hspace / 4;
6622
6623        int hs = mScrollX;
6624        int vs = mScrollY;
6625
6626        if (top - vs < vslack)
6627            vs = top - vslack;
6628        if (bottom - vs > vspace - vslack)
6629            vs = bottom - (vspace - vslack);
6630        if (ht - vs < vspace)
6631            vs = ht - vspace;
6632        if (0 - vs > 0)
6633            vs = 0;
6634
6635        if (grav != 0) {
6636            if (x - hs < hslack) {
6637                hs = x - hslack;
6638            }
6639            if (x - hs > hspace - hslack) {
6640                hs = x - (hspace - hslack);
6641            }
6642        }
6643
6644        if (grav < 0) {
6645            if (left - hs > 0)
6646                hs = left;
6647            if (right - hs < hspace)
6648                hs = right - hspace;
6649        } else if (grav > 0) {
6650            if (right - hs < hspace)
6651                hs = right - hspace;
6652            if (left - hs > 0)
6653                hs = left;
6654        } else /* grav == 0 */ {
6655            if (right - left <= hspace) {
6656                /*
6657                 * If the entire text fits, center it exactly.
6658                 */
6659                hs = left - (hspace - (right - left)) / 2;
6660            } else if (x > right - hslack) {
6661                /*
6662                 * If we are near the right edge, keep the right edge
6663                 * at the edge of the view.
6664                 */
6665                hs = right - hspace;
6666            } else if (x < left + hslack) {
6667                /*
6668                 * If we are near the left edge, keep the left edge
6669                 * at the edge of the view.
6670                 */
6671                hs = left;
6672            } else if (left > hs) {
6673                /*
6674                 * Is there whitespace visible at the left?  Fix it if so.
6675                 */
6676                hs = left;
6677            } else if (right < hs + hspace) {
6678                /*
6679                 * Is there whitespace visible at the right?  Fix it if so.
6680                 */
6681                hs = right - hspace;
6682            } else {
6683                /*
6684                 * Otherwise, float as needed.
6685                 */
6686                if (x - hs < hslack) {
6687                    hs = x - hslack;
6688                }
6689                if (x - hs > hspace - hslack) {
6690                    hs = x - (hspace - hslack);
6691                }
6692            }
6693        }
6694
6695        if (hs != mScrollX || vs != mScrollY) {
6696            if (mScroller == null) {
6697                scrollTo(hs, vs);
6698            } else {
6699                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
6700                int dx = hs - mScrollX;
6701                int dy = vs - mScrollY;
6702
6703                if (duration > ANIMATED_SCROLL_GAP) {
6704                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
6705                    awakenScrollBars(mScroller.getDuration());
6706                    invalidate();
6707                } else {
6708                    if (!mScroller.isFinished()) {
6709                        mScroller.abortAnimation();
6710                    }
6711
6712                    scrollBy(dx, dy);
6713                }
6714
6715                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
6716            }
6717
6718            changed = true;
6719        }
6720
6721        if (isFocused()) {
6722            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
6723            // requestRectangleOnScreen() is in terms of content coordinates.
6724
6725            // The offsets here are to ensure the rectangle we are using is
6726            // within our view bounds, in case the cursor is on the far left
6727            // or right.  If it isn't withing the bounds, then this request
6728            // will be ignored.
6729            if (mTempRect == null) mTempRect = new Rect();
6730            mTempRect.set(x - 2, top, x + 2, bottom);
6731            getInterestingRect(mTempRect, line);
6732            mTempRect.offset(mScrollX, mScrollY);
6733
6734            if (requestRectangleOnScreen(mTempRect)) {
6735                changed = true;
6736            }
6737        }
6738
6739        return changed;
6740    }
6741
6742    /**
6743     * Move the cursor, if needed, so that it is at an offset that is visible
6744     * to the user.  This will not move the cursor if it represents more than
6745     * one character (a selection range).  This will only work if the
6746     * TextView contains spannable text; otherwise it will do nothing.
6747     *
6748     * @return True if the cursor was actually moved, false otherwise.
6749     */
6750    public boolean moveCursorToVisibleOffset() {
6751        if (!(mText instanceof Spannable)) {
6752            return false;
6753        }
6754        int start = getSelectionStart();
6755        int end = getSelectionEnd();
6756        if (start != end) {
6757            return false;
6758        }
6759
6760        // First: make sure the line is visible on screen:
6761
6762        int line = mLayout.getLineForOffset(start);
6763
6764        final int top = mLayout.getLineTop(line);
6765        final int bottom = mLayout.getLineTop(line + 1);
6766        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6767        int vslack = (bottom - top) / 2;
6768        if (vslack > vspace / 4)
6769            vslack = vspace / 4;
6770        final int vs = mScrollY;
6771
6772        if (top < (vs+vslack)) {
6773            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
6774        } else if (bottom > (vspace+vs-vslack)) {
6775            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
6776        }
6777
6778        // Next: make sure the character is visible on screen:
6779
6780        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6781        final int hs = mScrollX;
6782        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
6783        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
6784
6785        // line might contain bidirectional text
6786        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
6787        final int highChar = leftChar > rightChar ? leftChar : rightChar;
6788
6789        int newStart = start;
6790        if (newStart < lowChar) {
6791            newStart = lowChar;
6792        } else if (newStart > highChar) {
6793            newStart = highChar;
6794        }
6795
6796        if (newStart != start) {
6797            Selection.setSelection((Spannable)mText, newStart);
6798            return true;
6799        }
6800
6801        return false;
6802    }
6803
6804    @Override
6805    public void computeScroll() {
6806        if (mScroller != null) {
6807            if (mScroller.computeScrollOffset()) {
6808                mScrollX = mScroller.getCurrX();
6809                mScrollY = mScroller.getCurrY();
6810                invalidateParentCaches();
6811                postInvalidate();  // So we draw again
6812            }
6813        }
6814    }
6815
6816    private void getInterestingRect(Rect r, int line) {
6817        convertFromViewportToContentCoordinates(r);
6818
6819        // Rectangle can can be expanded on first and last line to take
6820        // padding into account.
6821        // TODO Take left/right padding into account too?
6822        if (line == 0) r.top -= getExtendedPaddingTop();
6823        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
6824    }
6825
6826    private void convertFromViewportToContentCoordinates(Rect r) {
6827        final int horizontalOffset = viewportToContentHorizontalOffset();
6828        r.left += horizontalOffset;
6829        r.right += horizontalOffset;
6830
6831        final int verticalOffset = viewportToContentVerticalOffset();
6832        r.top += verticalOffset;
6833        r.bottom += verticalOffset;
6834    }
6835
6836    int viewportToContentHorizontalOffset() {
6837        return getCompoundPaddingLeft() - mScrollX;
6838    }
6839
6840    int viewportToContentVerticalOffset() {
6841        int offset = getExtendedPaddingTop() - mScrollY;
6842        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6843            offset += getVerticalOffset(false);
6844        }
6845        return offset;
6846    }
6847
6848    @Override
6849    public void debug(int depth) {
6850        super.debug(depth);
6851
6852        String output = debugIndent(depth);
6853        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
6854                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
6855                + "} ";
6856
6857        if (mText != null) {
6858
6859            output += "mText=\"" + mText + "\" ";
6860            if (mLayout != null) {
6861                output += "mLayout width=" + mLayout.getWidth()
6862                        + " height=" + mLayout.getHeight();
6863            }
6864        } else {
6865            output += "mText=NULL";
6866        }
6867        Log.d(VIEW_LOG_TAG, output);
6868    }
6869
6870    /**
6871     * Convenience for {@link Selection#getSelectionStart}.
6872     */
6873    @ViewDebug.ExportedProperty(category = "text")
6874    public int getSelectionStart() {
6875        return Selection.getSelectionStart(getText());
6876    }
6877
6878    /**
6879     * Convenience for {@link Selection#getSelectionEnd}.
6880     */
6881    @ViewDebug.ExportedProperty(category = "text")
6882    public int getSelectionEnd() {
6883        return Selection.getSelectionEnd(getText());
6884    }
6885
6886    /**
6887     * Return true iff there is a selection inside this text view.
6888     */
6889    public boolean hasSelection() {
6890        final int selectionStart = getSelectionStart();
6891        final int selectionEnd = getSelectionEnd();
6892
6893        return selectionStart >= 0 && selectionStart != selectionEnd;
6894    }
6895
6896    /**
6897     * Sets the properties of this field (lines, horizontally scrolling,
6898     * transformation method) to be for a single-line input.
6899     *
6900     * @attr ref android.R.styleable#TextView_singleLine
6901     */
6902    public void setSingleLine() {
6903        setSingleLine(true);
6904    }
6905
6906    /**
6907     * Sets the properties of this field to transform input to ALL CAPS
6908     * display. This may use a "small caps" formatting if available.
6909     * This setting will be ignored if this field is editable or selectable.
6910     *
6911     * This call replaces the current transformation method. Disabling this
6912     * will not necessarily restore the previous behavior from before this
6913     * was enabled.
6914     *
6915     * @see #setTransformationMethod(TransformationMethod)
6916     * @attr ref android.R.styleable#TextView_textAllCaps
6917     */
6918    public void setAllCaps(boolean allCaps) {
6919        if (allCaps) {
6920            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
6921        } else {
6922            setTransformationMethod(null);
6923        }
6924    }
6925
6926    /**
6927     * If true, sets the properties of this field (number of lines, horizontally scrolling,
6928     * transformation method) to be for a single-line input; if false, restores these to the default
6929     * conditions.
6930     *
6931     * Note that the default conditions are not necessarily those that were in effect prior this
6932     * method, and you may want to reset these properties to your custom values.
6933     *
6934     * @attr ref android.R.styleable#TextView_singleLine
6935     */
6936    @android.view.RemotableViewMethod
6937    public void setSingleLine(boolean singleLine) {
6938        // Could be used, but may break backward compatibility.
6939        // if (mSingleLine == singleLine) return;
6940        setInputTypeSingleLine(singleLine);
6941        applySingleLine(singleLine, true, true);
6942    }
6943
6944    /**
6945     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
6946     * @param singleLine
6947     */
6948    private void setInputTypeSingleLine(boolean singleLine) {
6949        if (mEditor != null &&
6950                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6951            if (singleLine) {
6952                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6953            } else {
6954                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6955            }
6956        }
6957    }
6958
6959    private void applySingleLine(boolean singleLine, boolean applyTransformation,
6960            boolean changeMaxLines) {
6961        mSingleLine = singleLine;
6962        if (singleLine) {
6963            setLines(1);
6964            setHorizontallyScrolling(true);
6965            if (applyTransformation) {
6966                setTransformationMethod(SingleLineTransformationMethod.getInstance());
6967            }
6968        } else {
6969            if (changeMaxLines) {
6970                setMaxLines(Integer.MAX_VALUE);
6971            }
6972            setHorizontallyScrolling(false);
6973            if (applyTransformation) {
6974                setTransformationMethod(null);
6975            }
6976        }
6977    }
6978
6979    /**
6980     * Causes words in the text that are longer than the view is wide
6981     * to be ellipsized instead of broken in the middle.  You may also
6982     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
6983     * to constrain the text to a single line.  Use <code>null</code>
6984     * to turn off ellipsizing.
6985     *
6986     * If {@link #setMaxLines} has been used to set two or more lines,
6987     * {@link android.text.TextUtils.TruncateAt#END} and
6988     * {@link android.text.TextUtils.TruncateAt#MARQUEE}* are only supported
6989     * (other ellipsizing types will not do anything).
6990     *
6991     * @attr ref android.R.styleable#TextView_ellipsize
6992     */
6993    public void setEllipsize(TextUtils.TruncateAt where) {
6994        // TruncateAt is an enum. != comparison is ok between these singleton objects.
6995        if (mEllipsize != where) {
6996            mEllipsize = where;
6997
6998            if (mLayout != null) {
6999                nullLayouts();
7000                requestLayout();
7001                invalidate();
7002            }
7003        }
7004    }
7005
7006    /**
7007     * Sets how many times to repeat the marquee animation. Only applied if the
7008     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
7009     *
7010     * @see #getMarqueeRepeatLimit()
7011     *
7012     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7013     */
7014    public void setMarqueeRepeatLimit(int marqueeLimit) {
7015        mMarqueeRepeatLimit = marqueeLimit;
7016    }
7017
7018    /**
7019     * Gets the number of times the marquee animation is repeated. Only meaningful if the
7020     * TextView has marquee enabled.
7021     *
7022     * @return the number of times the marquee animation is repeated. -1 if the animation
7023     * repeats indefinitely
7024     *
7025     * @see #setMarqueeRepeatLimit(int)
7026     *
7027     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7028     */
7029    public int getMarqueeRepeatLimit() {
7030        return mMarqueeRepeatLimit;
7031    }
7032
7033    /**
7034     * Returns where, if anywhere, words that are longer than the view
7035     * is wide should be ellipsized.
7036     */
7037    @ViewDebug.ExportedProperty
7038    public TextUtils.TruncateAt getEllipsize() {
7039        return mEllipsize;
7040    }
7041
7042    /**
7043     * Set the TextView so that when it takes focus, all the text is
7044     * selected.
7045     *
7046     * @attr ref android.R.styleable#TextView_selectAllOnFocus
7047     */
7048    @android.view.RemotableViewMethod
7049    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
7050        createEditorIfNeeded();
7051        mEditor.mSelectAllOnFocus = selectAllOnFocus;
7052
7053        if (selectAllOnFocus && !(mText instanceof Spannable)) {
7054            setText(mText, BufferType.SPANNABLE);
7055        }
7056    }
7057
7058    /**
7059     * Set whether the cursor is visible. The default is true. Note that this property only
7060     * makes sense for editable TextView.
7061     *
7062     * @see #isCursorVisible()
7063     *
7064     * @attr ref android.R.styleable#TextView_cursorVisible
7065     */
7066    @android.view.RemotableViewMethod
7067    public void setCursorVisible(boolean visible) {
7068        if (visible && mEditor == null) return; // visible is the default value with no edit data
7069        createEditorIfNeeded();
7070        if (mEditor.mCursorVisible != visible) {
7071            mEditor.mCursorVisible = visible;
7072            invalidate();
7073
7074            mEditor.makeBlink();
7075
7076            // InsertionPointCursorController depends on mCursorVisible
7077            mEditor.prepareCursorControllers();
7078        }
7079    }
7080
7081    /**
7082     * @return whether or not the cursor is visible (assuming this TextView is editable)
7083     *
7084     * @see #setCursorVisible(boolean)
7085     *
7086     * @attr ref android.R.styleable#TextView_cursorVisible
7087     */
7088    public boolean isCursorVisible() {
7089        // true is the default value
7090        return mEditor == null ? true : mEditor.mCursorVisible;
7091    }
7092
7093    private boolean canMarquee() {
7094        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
7095        return width > 0 && (mLayout.getLineWidth(0) > width ||
7096                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
7097                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
7098    }
7099
7100    private void startMarquee() {
7101        // Do not ellipsize EditText
7102        if (getKeyListener() != null) return;
7103
7104        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
7105            return;
7106        }
7107
7108        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
7109                getLineCount() == 1 && canMarquee()) {
7110
7111            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7112                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
7113                final Layout tmp = mLayout;
7114                mLayout = mSavedMarqueeModeLayout;
7115                mSavedMarqueeModeLayout = tmp;
7116                setHorizontalFadingEdgeEnabled(true);
7117                requestLayout();
7118                invalidate();
7119            }
7120
7121            if (mMarquee == null) mMarquee = new Marquee(this);
7122            mMarquee.start(mMarqueeRepeatLimit);
7123        }
7124    }
7125
7126    private void stopMarquee() {
7127        if (mMarquee != null && !mMarquee.isStopped()) {
7128            mMarquee.stop();
7129        }
7130
7131        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
7132            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
7133            final Layout tmp = mSavedMarqueeModeLayout;
7134            mSavedMarqueeModeLayout = mLayout;
7135            mLayout = tmp;
7136            setHorizontalFadingEdgeEnabled(false);
7137            requestLayout();
7138            invalidate();
7139        }
7140    }
7141
7142    private void startStopMarquee(boolean start) {
7143        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7144            if (start) {
7145                startMarquee();
7146            } else {
7147                stopMarquee();
7148            }
7149        }
7150    }
7151
7152    /**
7153     * This method is called when the text is changed, in case any subclasses
7154     * would like to know.
7155     *
7156     * Within <code>text</code>, the <code>lengthAfter</code> characters
7157     * beginning at <code>start</code> have just replaced old text that had
7158     * length <code>lengthBefore</code>. It is an error to attempt to make
7159     * changes to <code>text</code> from this callback.
7160     *
7161     * @param text The text the TextView is displaying
7162     * @param start The offset of the start of the range of the text that was
7163     * modified
7164     * @param lengthBefore The length of the former text that has been replaced
7165     * @param lengthAfter The length of the replacement modified text
7166     */
7167    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
7168        // intentionally empty, template pattern method can be overridden by subclasses
7169    }
7170
7171    /**
7172     * This method is called when the selection has changed, in case any
7173     * subclasses would like to know.
7174     *
7175     * @param selStart The new selection start location.
7176     * @param selEnd The new selection end location.
7177     */
7178    protected void onSelectionChanged(int selStart, int selEnd) {
7179        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
7180        notifyAccessibilityStateChanged();
7181    }
7182
7183    /**
7184     * Adds a TextWatcher to the list of those whose methods are called
7185     * whenever this TextView's text changes.
7186     * <p>
7187     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
7188     * not called after {@link #setText} calls.  Now, doing {@link #setText}
7189     * if there are any text changed listeners forces the buffer type to
7190     * Editable if it would not otherwise be and does call this method.
7191     */
7192    public void addTextChangedListener(TextWatcher watcher) {
7193        if (mListeners == null) {
7194            mListeners = new ArrayList<TextWatcher>();
7195        }
7196
7197        mListeners.add(watcher);
7198    }
7199
7200    /**
7201     * Removes the specified TextWatcher from the list of those whose
7202     * methods are called
7203     * whenever this TextView's text changes.
7204     */
7205    public void removeTextChangedListener(TextWatcher watcher) {
7206        if (mListeners != null) {
7207            int i = mListeners.indexOf(watcher);
7208
7209            if (i >= 0) {
7210                mListeners.remove(i);
7211            }
7212        }
7213    }
7214
7215    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
7216        if (mListeners != null) {
7217            final ArrayList<TextWatcher> list = mListeners;
7218            final int count = list.size();
7219            for (int i = 0; i < count; i++) {
7220                list.get(i).beforeTextChanged(text, start, before, after);
7221            }
7222        }
7223
7224        // The spans that are inside or intersect the modified region no longer make sense
7225        removeIntersectingSpans(start, start + before, SpellCheckSpan.class);
7226        removeIntersectingSpans(start, start + before, SuggestionSpan.class);
7227    }
7228
7229    // Removes all spans that are inside or actually overlap the start..end range
7230    private <T> void removeIntersectingSpans(int start, int end, Class<T> type) {
7231        if (!(mText instanceof Editable)) return;
7232        Editable text = (Editable) mText;
7233
7234        T[] spans = text.getSpans(start, end, type);
7235        final int length = spans.length;
7236        for (int i = 0; i < length; i++) {
7237            final int s = text.getSpanStart(spans[i]);
7238            final int e = text.getSpanEnd(spans[i]);
7239            // Spans that are adjacent to the edited region will be handled in
7240            // updateSpellCheckSpans. Result depends on what will be added (space or text)
7241            if (e == start || s == end) break;
7242            text.removeSpan(spans[i]);
7243        }
7244    }
7245
7246    /**
7247     * Not private so it can be called from an inner class without going
7248     * through a thunk.
7249     */
7250    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
7251        if (mListeners != null) {
7252            final ArrayList<TextWatcher> list = mListeners;
7253            final int count = list.size();
7254            for (int i = 0; i < count; i++) {
7255                list.get(i).onTextChanged(text, start, before, after);
7256            }
7257        }
7258
7259        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
7260    }
7261
7262    /**
7263     * Not private so it can be called from an inner class without going
7264     * through a thunk.
7265     */
7266    void sendAfterTextChanged(Editable text) {
7267        if (mListeners != null) {
7268            final ArrayList<TextWatcher> list = mListeners;
7269            final int count = list.size();
7270            for (int i = 0; i < count; i++) {
7271                list.get(i).afterTextChanged(text);
7272            }
7273        }
7274    }
7275
7276    void updateAfterEdit() {
7277        invalidate();
7278        int curs = getSelectionStart();
7279
7280        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7281            registerForPreDraw();
7282        }
7283
7284        checkForResize();
7285
7286        if (curs >= 0) {
7287            mHighlightPathBogus = true;
7288            if (mEditor != null) mEditor.makeBlink();
7289            bringPointIntoView(curs);
7290        }
7291    }
7292
7293    /**
7294     * Not private so it can be called from an inner class without going
7295     * through a thunk.
7296     */
7297    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
7298        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7299        if (ims == null || ims.mBatchEditNesting == 0) {
7300            updateAfterEdit();
7301        }
7302        if (ims != null) {
7303            ims.mContentChanged = true;
7304            if (ims.mChangedStart < 0) {
7305                ims.mChangedStart = start;
7306                ims.mChangedEnd = start+before;
7307            } else {
7308                ims.mChangedStart = Math.min(ims.mChangedStart, start);
7309                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
7310            }
7311            ims.mChangedDelta += after-before;
7312        }
7313
7314        sendOnTextChanged(buffer, start, before, after);
7315        onTextChanged(buffer, start, before, after);
7316    }
7317
7318    /**
7319     * Not private so it can be called from an inner class without going
7320     * through a thunk.
7321     */
7322    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
7323        // XXX Make the start and end move together if this ends up
7324        // spending too much time invalidating.
7325
7326        boolean selChanged = false;
7327        int newSelStart=-1, newSelEnd=-1;
7328
7329        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7330
7331        if (what == Selection.SELECTION_END) {
7332            selChanged = true;
7333            newSelEnd = newStart;
7334
7335            if (oldStart >= 0 || newStart >= 0) {
7336                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
7337                checkForResize();
7338                registerForPreDraw();
7339                if (mEditor != null) mEditor.makeBlink();
7340            }
7341        }
7342
7343        if (what == Selection.SELECTION_START) {
7344            selChanged = true;
7345            newSelStart = newStart;
7346
7347            if (oldStart >= 0 || newStart >= 0) {
7348                int end = Selection.getSelectionEnd(buf);
7349                invalidateCursor(end, oldStart, newStart);
7350            }
7351        }
7352
7353        if (selChanged) {
7354            mHighlightPathBogus = true;
7355            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
7356
7357            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
7358                if (newSelStart < 0) {
7359                    newSelStart = Selection.getSelectionStart(buf);
7360                }
7361                if (newSelEnd < 0) {
7362                    newSelEnd = Selection.getSelectionEnd(buf);
7363                }
7364                onSelectionChanged(newSelStart, newSelEnd);
7365            }
7366        }
7367
7368        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
7369                what instanceof CharacterStyle) {
7370            if (ims == null || ims.mBatchEditNesting == 0) {
7371                invalidate();
7372                mHighlightPathBogus = true;
7373                checkForResize();
7374            } else {
7375                ims.mContentChanged = true;
7376            }
7377            if (mEditor != null) {
7378                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
7379                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
7380            }
7381        }
7382
7383        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
7384            mHighlightPathBogus = true;
7385            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
7386                ims.mSelectionModeChanged = true;
7387            }
7388
7389            if (Selection.getSelectionStart(buf) >= 0) {
7390                if (ims == null || ims.mBatchEditNesting == 0) {
7391                    invalidateCursor();
7392                } else {
7393                    ims.mCursorChanged = true;
7394                }
7395            }
7396        }
7397
7398        if (what instanceof ParcelableSpan) {
7399            // If this is a span that can be sent to a remote process,
7400            // the current extract editor would be interested in it.
7401            if (ims != null && ims.mExtractedTextRequest != null) {
7402                if (ims.mBatchEditNesting != 0) {
7403                    if (oldStart >= 0) {
7404                        if (ims.mChangedStart > oldStart) {
7405                            ims.mChangedStart = oldStart;
7406                        }
7407                        if (ims.mChangedStart > oldEnd) {
7408                            ims.mChangedStart = oldEnd;
7409                        }
7410                    }
7411                    if (newStart >= 0) {
7412                        if (ims.mChangedStart > newStart) {
7413                            ims.mChangedStart = newStart;
7414                        }
7415                        if (ims.mChangedStart > newEnd) {
7416                            ims.mChangedStart = newEnd;
7417                        }
7418                    }
7419                } else {
7420                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
7421                            + oldStart + "-" + oldEnd + ","
7422                            + newStart + "-" + newEnd + " " + what);
7423                    ims.mContentChanged = true;
7424                }
7425            }
7426        }
7427
7428        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
7429                what instanceof SpellCheckSpan) {
7430            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
7431        }
7432    }
7433
7434    /**
7435     * @hide
7436     */
7437    @Override
7438    public void dispatchFinishTemporaryDetach() {
7439        mDispatchTemporaryDetach = true;
7440        super.dispatchFinishTemporaryDetach();
7441        mDispatchTemporaryDetach = false;
7442    }
7443
7444    @Override
7445    public void onStartTemporaryDetach() {
7446        super.onStartTemporaryDetach();
7447        // Only track when onStartTemporaryDetach() is called directly,
7448        // usually because this instance is an editable field in a list
7449        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
7450
7451        // Tell the editor that we are temporarily detached. It can use this to preserve
7452        // selection state as needed.
7453        if (mEditor != null) mEditor.mTemporaryDetach = true;
7454    }
7455
7456    @Override
7457    public void onFinishTemporaryDetach() {
7458        super.onFinishTemporaryDetach();
7459        // Only track when onStartTemporaryDetach() is called directly,
7460        // usually because this instance is an editable field in a list
7461        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
7462        if (mEditor != null) mEditor.mTemporaryDetach = false;
7463    }
7464
7465    @Override
7466    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
7467        if (mTemporaryDetach) {
7468            // If we are temporarily in the detach state, then do nothing.
7469            super.onFocusChanged(focused, direction, previouslyFocusedRect);
7470            return;
7471        }
7472
7473        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
7474
7475        if (focused) {
7476            if (mText instanceof Spannable) {
7477                Spannable sp = (Spannable) mText;
7478                MetaKeyKeyListener.resetMetaState(sp);
7479            }
7480        }
7481
7482        startStopMarquee(focused);
7483
7484        if (mTransformation != null) {
7485            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
7486        }
7487
7488        super.onFocusChanged(focused, direction, previouslyFocusedRect);
7489    }
7490
7491    @Override
7492    public void onWindowFocusChanged(boolean hasWindowFocus) {
7493        super.onWindowFocusChanged(hasWindowFocus);
7494
7495        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
7496
7497        startStopMarquee(hasWindowFocus);
7498    }
7499
7500    @Override
7501    protected void onVisibilityChanged(View changedView, int visibility) {
7502        super.onVisibilityChanged(changedView, visibility);
7503        if (mEditor != null && visibility != VISIBLE) {
7504            mEditor.hideControllers();
7505        }
7506    }
7507
7508    /**
7509     * Use {@link BaseInputConnection#removeComposingSpans
7510     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
7511     * state from this text view.
7512     */
7513    public void clearComposingText() {
7514        if (mText instanceof Spannable) {
7515            BaseInputConnection.removeComposingSpans((Spannable)mText);
7516        }
7517    }
7518
7519    @Override
7520    public void setSelected(boolean selected) {
7521        boolean wasSelected = isSelected();
7522
7523        super.setSelected(selected);
7524
7525        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7526            if (selected) {
7527                startMarquee();
7528            } else {
7529                stopMarquee();
7530            }
7531        }
7532    }
7533
7534    @Override
7535    public boolean onTouchEvent(MotionEvent event) {
7536        final int action = event.getActionMasked();
7537
7538        if (mEditor != null) mEditor.onTouchEvent(event);
7539
7540        final boolean superResult = super.onTouchEvent(event);
7541
7542        /*
7543         * Don't handle the release after a long press, because it will
7544         * move the selection away from whatever the menu action was
7545         * trying to affect.
7546         */
7547        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
7548            mEditor.mDiscardNextActionUp = false;
7549            return superResult;
7550        }
7551
7552        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
7553                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
7554
7555         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
7556                && mText instanceof Spannable && mLayout != null) {
7557            boolean handled = false;
7558
7559            if (mMovement != null) {
7560                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
7561            }
7562
7563            final boolean textIsSelectable = isTextSelectable();
7564            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
7565                // The LinkMovementMethod which should handle taps on links has not been installed
7566                // on non editable text that support text selection.
7567                // We reproduce its behavior here to open links for these.
7568                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
7569                        getSelectionEnd(), ClickableSpan.class);
7570
7571                if (links.length > 0) {
7572                    links[0].onClick(this);
7573                    handled = true;
7574                }
7575            }
7576
7577            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
7578                // Show the IME, except when selecting in read-only text.
7579                final InputMethodManager imm = InputMethodManager.peekInstance();
7580                viewClicked(imm);
7581                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
7582                    handled |= imm != null && imm.showSoftInput(this, 0);
7583                }
7584
7585                // The above condition ensures that the mEditor is not null
7586                mEditor.onTouchUpEvent(event);
7587
7588                handled = true;
7589            }
7590
7591            if (handled) {
7592                return true;
7593            }
7594        }
7595
7596        return superResult;
7597    }
7598
7599    @Override
7600    public boolean onGenericMotionEvent(MotionEvent event) {
7601        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7602            try {
7603                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
7604                    return true;
7605                }
7606            } catch (AbstractMethodError ex) {
7607                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
7608                // Ignore its absence in case third party applications implemented the
7609                // interface directly.
7610            }
7611        }
7612        return super.onGenericMotionEvent(event);
7613    }
7614
7615    /**
7616     * @return True iff this TextView contains a text that can be edited, or if this is
7617     * a selectable TextView.
7618     */
7619    boolean isTextEditable() {
7620        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
7621    }
7622
7623    /**
7624     * Returns true, only while processing a touch gesture, if the initial
7625     * touch down event caused focus to move to the text view and as a result
7626     * its selection changed.  Only valid while processing the touch gesture
7627     * of interest, in an editable text view.
7628     */
7629    public boolean didTouchFocusSelect() {
7630        return mEditor != null && mEditor.mTouchFocusSelected;
7631    }
7632
7633    @Override
7634    public void cancelLongPress() {
7635        super.cancelLongPress();
7636        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
7637    }
7638
7639    @Override
7640    public boolean onTrackballEvent(MotionEvent event) {
7641        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7642            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
7643                return true;
7644            }
7645        }
7646
7647        return super.onTrackballEvent(event);
7648    }
7649
7650    public void setScroller(Scroller s) {
7651        mScroller = s;
7652    }
7653
7654    @Override
7655    protected float getLeftFadingEdgeStrength() {
7656        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7657                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7658            if (mMarquee != null && !mMarquee.isStopped()) {
7659                final Marquee marquee = mMarquee;
7660                if (marquee.shouldDrawLeftFade()) {
7661                    final float scroll = marquee.getScroll();
7662                    return scroll / getHorizontalFadingEdgeLength();
7663                } else {
7664                    return 0.0f;
7665                }
7666            } else if (getLineCount() == 1) {
7667                final int layoutDirection = getLayoutDirection();
7668                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7669                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7670                    case Gravity.LEFT:
7671                        return 0.0f;
7672                    case Gravity.RIGHT:
7673                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
7674                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
7675                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
7676                    case Gravity.CENTER_HORIZONTAL:
7677                        return 0.0f;
7678                }
7679            }
7680        }
7681        return super.getLeftFadingEdgeStrength();
7682    }
7683
7684    @Override
7685    protected float getRightFadingEdgeStrength() {
7686        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7687                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7688            if (mMarquee != null && !mMarquee.isStopped()) {
7689                final Marquee marquee = mMarquee;
7690                final float maxFadeScroll = marquee.getMaxFadeScroll();
7691                final float scroll = marquee.getScroll();
7692                return (maxFadeScroll - scroll) / getHorizontalFadingEdgeLength();
7693            } else if (getLineCount() == 1) {
7694                final int layoutDirection = getLayoutDirection();
7695                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7696                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7697                    case Gravity.LEFT:
7698                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
7699                                getCompoundPaddingRight();
7700                        final float lineWidth = mLayout.getLineWidth(0);
7701                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
7702                    case Gravity.RIGHT:
7703                        return 0.0f;
7704                    case Gravity.CENTER_HORIZONTAL:
7705                    case Gravity.FILL_HORIZONTAL:
7706                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
7707                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
7708                                getHorizontalFadingEdgeLength();
7709                }
7710            }
7711        }
7712        return super.getRightFadingEdgeStrength();
7713    }
7714
7715    @Override
7716    protected int computeHorizontalScrollRange() {
7717        if (mLayout != null) {
7718            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
7719                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
7720        }
7721
7722        return super.computeHorizontalScrollRange();
7723    }
7724
7725    @Override
7726    protected int computeVerticalScrollRange() {
7727        if (mLayout != null)
7728            return mLayout.getHeight();
7729
7730        return super.computeVerticalScrollRange();
7731    }
7732
7733    @Override
7734    protected int computeVerticalScrollExtent() {
7735        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
7736    }
7737
7738    @Override
7739    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
7740        super.findViewsWithText(outViews, searched, flags);
7741        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
7742                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
7743            String searchedLowerCase = searched.toString().toLowerCase();
7744            String textLowerCase = mText.toString().toLowerCase();
7745            if (textLowerCase.contains(searchedLowerCase)) {
7746                outViews.add(this);
7747            }
7748        }
7749    }
7750
7751    public enum BufferType {
7752        NORMAL, SPANNABLE, EDITABLE,
7753    }
7754
7755    /**
7756     * Returns the TextView_textColor attribute from the
7757     * TypedArray, if set, or the TextAppearance_textColor
7758     * from the TextView_textAppearance attribute, if TextView_textColor
7759     * was not set directly.
7760     */
7761    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
7762        ColorStateList colors;
7763        colors = attrs.getColorStateList(com.android.internal.R.styleable.
7764                                         TextView_textColor);
7765
7766        if (colors == null) {
7767            int ap = attrs.getResourceId(com.android.internal.R.styleable.
7768                                         TextView_textAppearance, -1);
7769            if (ap != -1) {
7770                TypedArray appearance;
7771                appearance = context.obtainStyledAttributes(ap,
7772                                            com.android.internal.R.styleable.TextAppearance);
7773                colors = appearance.getColorStateList(com.android.internal.R.styleable.
7774                                                  TextAppearance_textColor);
7775                appearance.recycle();
7776            }
7777        }
7778
7779        return colors;
7780    }
7781
7782    /**
7783     * Returns the default color from the TextView_textColor attribute
7784     * from the AttributeSet, if set, or the default color from the
7785     * TextAppearance_textColor from the TextView_textAppearance attribute,
7786     * if TextView_textColor was not set directly.
7787     */
7788    public static int getTextColor(Context context,
7789                                   TypedArray attrs,
7790                                   int def) {
7791        ColorStateList colors = getTextColors(context, attrs);
7792
7793        if (colors == null) {
7794            return def;
7795        } else {
7796            return colors.getDefaultColor();
7797        }
7798    }
7799
7800    @Override
7801    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
7802        final int filteredMetaState = event.getMetaState() & ~KeyEvent.META_CTRL_MASK;
7803        if (KeyEvent.metaStateHasNoModifiers(filteredMetaState)) {
7804            switch (keyCode) {
7805            case KeyEvent.KEYCODE_A:
7806                if (canSelectText()) {
7807                    return onTextContextMenuItem(ID_SELECT_ALL);
7808                }
7809                break;
7810            case KeyEvent.KEYCODE_X:
7811                if (canCut()) {
7812                    return onTextContextMenuItem(ID_CUT);
7813                }
7814                break;
7815            case KeyEvent.KEYCODE_C:
7816                if (canCopy()) {
7817                    return onTextContextMenuItem(ID_COPY);
7818                }
7819                break;
7820            case KeyEvent.KEYCODE_V:
7821                if (canPaste()) {
7822                    return onTextContextMenuItem(ID_PASTE);
7823                }
7824                break;
7825            }
7826        }
7827        return super.onKeyShortcut(keyCode, event);
7828    }
7829
7830    /**
7831     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
7832     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
7833     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
7834     * sufficient.
7835     */
7836    private boolean canSelectText() {
7837        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
7838    }
7839
7840    /**
7841     * Test based on the <i>intrinsic</i> charateristics of the TextView.
7842     * The text must be spannable and the movement method must allow for arbitary selection.
7843     *
7844     * See also {@link #canSelectText()}.
7845     */
7846    boolean textCanBeSelected() {
7847        // prepareCursorController() relies on this method.
7848        // If you change this condition, make sure prepareCursorController is called anywhere
7849        // the value of this condition might be changed.
7850        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
7851        return isTextEditable() ||
7852                (isTextSelectable() && mText instanceof Spannable && isEnabled());
7853    }
7854
7855    private Locale getTextServicesLocale(boolean allowNullLocale) {
7856        // Start fetching the text services locale asynchronously.
7857        updateTextServicesLocaleAsync();
7858        // If !allowNullLocale and there is no cached text services locale, just return the default
7859        // locale.
7860        return (mCurrentSpellCheckerLocaleCache == null && !allowNullLocale) ? Locale.getDefault()
7861                : mCurrentSpellCheckerLocaleCache;
7862    }
7863
7864    /**
7865     * This is a temporary method. Future versions may support multi-locale text.
7866     * Caveat: This method may not return the latest text services locale, but this should be
7867     * acceptable and it's more important to make this method asynchronous.
7868     *
7869     * @return The locale that should be used for a word iterator
7870     * in this TextView, based on the current spell checker settings,
7871     * the current IME's locale, or the system default locale.
7872     * Please note that a word iterator in this TextView is different from another word iterator
7873     * used by SpellChecker.java of TextView. This method should be used for the former.
7874     * @hide
7875     */
7876    // TODO: Support multi-locale
7877    // TODO: Update the text services locale immediately after the keyboard locale is switched
7878    // by catching intent of keyboard switch event
7879    public Locale getTextServicesLocale() {
7880        return getTextServicesLocale(false /* allowNullLocale */);
7881    }
7882
7883    /**
7884     * This is a temporary method. Future versions may support multi-locale text.
7885     * Caveat: This method may not return the latest spell checker locale, but this should be
7886     * acceptable and it's more important to make this method asynchronous.
7887     *
7888     * @return The locale that should be used for a spell checker in this TextView,
7889     * based on the current spell checker settings, the current IME's locale, or the system default
7890     * locale.
7891     * @hide
7892     */
7893    public Locale getSpellCheckerLocale() {
7894        return getTextServicesLocale(true /* allowNullLocale */);
7895    }
7896
7897    private void updateTextServicesLocaleAsync() {
7898        AsyncTask.execute(new Runnable() {
7899            @Override
7900            public void run() {
7901                if (mCurrentTextServicesLocaleLock.tryLock()) {
7902                    try {
7903                        updateTextServicesLocaleLocked();
7904                    } finally {
7905                        mCurrentTextServicesLocaleLock.unlock();
7906                    }
7907                }
7908            }
7909        });
7910    }
7911
7912    private void updateTextServicesLocaleLocked() {
7913        final TextServicesManager textServicesManager = (TextServicesManager)
7914                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
7915        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
7916        final Locale locale;
7917        if (subtype != null) {
7918            locale = SpellCheckerSubtype.constructLocaleFromString(subtype.getLocale());
7919        } else {
7920            locale = null;
7921        }
7922        mCurrentSpellCheckerLocaleCache = locale;
7923    }
7924
7925    void onLocaleChanged() {
7926        // Will be re-created on demand in getWordIterator with the proper new locale
7927        mEditor.mWordIterator = null;
7928    }
7929
7930    /**
7931     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
7932     * Made available to achieve a consistent behavior.
7933     * @hide
7934     */
7935    public WordIterator getWordIterator() {
7936        if (mEditor != null) {
7937            return mEditor.getWordIterator();
7938        } else {
7939            return null;
7940        }
7941    }
7942
7943    @Override
7944    public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
7945        super.onPopulateAccessibilityEvent(event);
7946
7947        final boolean isPassword = hasPasswordTransformationMethod();
7948        if (!isPassword || shouldSpeakPasswordsForAccessibility()) {
7949            final CharSequence text = getTextForAccessibility();
7950            if (!TextUtils.isEmpty(text)) {
7951                event.getText().add(text);
7952            }
7953        }
7954    }
7955
7956    /**
7957     * @return true if the user has explicitly allowed accessibility services
7958     * to speak passwords.
7959     */
7960    private boolean shouldSpeakPasswordsForAccessibility() {
7961        return (Settings.Secure.getInt(mContext.getContentResolver(),
7962                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0) == 1);
7963    }
7964
7965    @Override
7966    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
7967        super.onInitializeAccessibilityEvent(event);
7968
7969        event.setClassName(TextView.class.getName());
7970        final boolean isPassword = hasPasswordTransformationMethod();
7971        event.setPassword(isPassword);
7972
7973        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
7974            event.setFromIndex(Selection.getSelectionStart(mText));
7975            event.setToIndex(Selection.getSelectionEnd(mText));
7976            event.setItemCount(mText.length());
7977        }
7978    }
7979
7980    @Override
7981    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
7982        super.onInitializeAccessibilityNodeInfo(info);
7983
7984        info.setClassName(TextView.class.getName());
7985        final boolean isPassword = hasPasswordTransformationMethod();
7986        info.setPassword(isPassword);
7987
7988        if (!isPassword) {
7989            info.setText(getTextForAccessibility());
7990        }
7991
7992        if (mBufferType == BufferType.EDITABLE) {
7993            info.setEditable(true);
7994        }
7995
7996        if (TextUtils.isEmpty(getContentDescription()) && !TextUtils.isEmpty(mText)) {
7997            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
7998            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
7999            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
8000                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
8001                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
8002                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
8003                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
8004        }
8005        if (isFocused()) {
8006            if (canSelectText()) {
8007                info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
8008            }
8009            if (canCopy()) {
8010                info.addAction(AccessibilityNodeInfo.ACTION_COPY);
8011            }
8012            if (canPaste()) {
8013                info.addAction(AccessibilityNodeInfo.ACTION_PASTE);
8014            }
8015            if (canCut()) {
8016                info.addAction(AccessibilityNodeInfo.ACTION_CUT);
8017            }
8018        }
8019    }
8020
8021    @Override
8022    public boolean performAccessibilityAction(int action, Bundle arguments) {
8023        switch (action) {
8024            case AccessibilityNodeInfo.ACTION_COPY: {
8025                if (isFocused() && canCopy()) {
8026                    if (onTextContextMenuItem(ID_COPY)) {
8027                        notifyAccessibilityStateChanged();
8028                        return true;
8029                    }
8030                }
8031            } return false;
8032            case AccessibilityNodeInfo.ACTION_PASTE: {
8033                if (isFocused() && canPaste()) {
8034                    if (onTextContextMenuItem(ID_PASTE)) {
8035                        notifyAccessibilityStateChanged();
8036                        return true;
8037                    }
8038                }
8039            } return false;
8040            case AccessibilityNodeInfo.ACTION_CUT: {
8041                if (isFocused() && canCut()) {
8042                    if (onTextContextMenuItem(ID_CUT)) {
8043                        notifyAccessibilityStateChanged();
8044                        return true;
8045                    }
8046                }
8047            } return false;
8048            case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
8049                if (isFocused() && canSelectText()) {
8050                    CharSequence text = getIterableTextForAccessibility();
8051                    if (text == null) {
8052                        return false;
8053                    }
8054                    final int start = (arguments != null) ? arguments.getInt(
8055                            AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
8056                    final int end = (arguments != null) ? arguments.getInt(
8057                            AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
8058                    if ((getSelectionStart() != start || getSelectionEnd() != end)) {
8059                        // No arguments clears the selection.
8060                        if (start == end && end == -1) {
8061                            Selection.removeSelection((Spannable) text);
8062                            notifyAccessibilityStateChanged();
8063                            return true;
8064                        }
8065                        if (start >= 0 && start <= end && end <= text.length()) {
8066                            Selection.setSelection((Spannable) text, start, end);
8067                            // Make sure selection mode is engaged.
8068                            if (mEditor != null) {
8069                                mEditor.startSelectionActionMode();
8070                            }
8071                            notifyAccessibilityStateChanged();
8072                            return true;
8073                        }
8074                    }
8075                }
8076            } return false;
8077            default: {
8078                return super.performAccessibilityAction(action, arguments);
8079            }
8080        }
8081    }
8082
8083    @Override
8084    public void sendAccessibilityEvent(int eventType) {
8085        // Do not send scroll events since first they are not interesting for
8086        // accessibility and second such events a generated too frequently.
8087        // For details see the implementation of bringTextIntoView().
8088        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
8089            return;
8090        }
8091        super.sendAccessibilityEvent(eventType);
8092    }
8093
8094    /**
8095     * Gets the text reported for accessibility purposes.
8096     *
8097     * @return The accessibility text.
8098     *
8099     * @hide
8100     */
8101    public CharSequence getTextForAccessibility() {
8102        CharSequence text = getText();
8103        if (TextUtils.isEmpty(text)) {
8104            text = getHint();
8105        }
8106        return text;
8107    }
8108
8109    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
8110            int fromIndex, int removedCount, int addedCount) {
8111        AccessibilityEvent event =
8112            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
8113        event.setFromIndex(fromIndex);
8114        event.setRemovedCount(removedCount);
8115        event.setAddedCount(addedCount);
8116        event.setBeforeText(beforeText);
8117        sendAccessibilityEventUnchecked(event);
8118    }
8119
8120    /**
8121     * Returns whether this text view is a current input method target.  The
8122     * default implementation just checks with {@link InputMethodManager}.
8123     */
8124    public boolean isInputMethodTarget() {
8125        InputMethodManager imm = InputMethodManager.peekInstance();
8126        return imm != null && imm.isActive(this);
8127    }
8128
8129    static final int ID_SELECT_ALL = android.R.id.selectAll;
8130    static final int ID_CUT = android.R.id.cut;
8131    static final int ID_COPY = android.R.id.copy;
8132    static final int ID_PASTE = android.R.id.paste;
8133
8134    /**
8135     * Called when a context menu option for the text view is selected.  Currently
8136     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
8137     * {@link android.R.id#copy} or {@link android.R.id#paste}.
8138     *
8139     * @return true if the context menu item action was performed.
8140     */
8141    public boolean onTextContextMenuItem(int id) {
8142        int min = 0;
8143        int max = mText.length();
8144
8145        if (isFocused()) {
8146            final int selStart = getSelectionStart();
8147            final int selEnd = getSelectionEnd();
8148
8149            min = Math.max(0, Math.min(selStart, selEnd));
8150            max = Math.max(0, Math.max(selStart, selEnd));
8151        }
8152
8153        switch (id) {
8154            case ID_SELECT_ALL:
8155                // This does not enter text selection mode. Text is highlighted, so that it can be
8156                // bulk edited, like selectAllOnFocus does. Returns true even if text is empty.
8157                selectAllText();
8158                return true;
8159
8160            case ID_PASTE:
8161                paste(min, max);
8162                return true;
8163
8164            case ID_CUT:
8165                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
8166                deleteText_internal(min, max);
8167                stopSelectionActionMode();
8168                return true;
8169
8170            case ID_COPY:
8171                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
8172                stopSelectionActionMode();
8173                return true;
8174        }
8175        return false;
8176    }
8177
8178    CharSequence getTransformedText(int start, int end) {
8179        return removeSuggestionSpans(mTransformed.subSequence(start, end));
8180    }
8181
8182    @Override
8183    public boolean performLongClick() {
8184        boolean handled = false;
8185
8186        if (super.performLongClick()) {
8187            handled = true;
8188        }
8189
8190        if (mEditor != null) {
8191            handled |= mEditor.performLongClick(handled);
8192        }
8193
8194        if (handled) {
8195            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
8196            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
8197        }
8198
8199        return handled;
8200    }
8201
8202    @Override
8203    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
8204        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
8205        if (mEditor != null) {
8206            mEditor.onScrollChanged();
8207        }
8208    }
8209
8210    /**
8211     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
8212     * by the IME or by the spell checker as the user types. This is done by adding
8213     * {@link SuggestionSpan}s to the text.
8214     *
8215     * When suggestions are enabled (default), this list of suggestions will be displayed when the
8216     * user asks for them on these parts of the text. This value depends on the inputType of this
8217     * TextView.
8218     *
8219     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
8220     *
8221     * In addition, the type variation must be one of
8222     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
8223     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
8224     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
8225     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
8226     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
8227     *
8228     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
8229     *
8230     * @return true if the suggestions popup window is enabled, based on the inputType.
8231     */
8232    public boolean isSuggestionsEnabled() {
8233        if (mEditor == null) return false;
8234        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
8235            return false;
8236        }
8237        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
8238
8239        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
8240        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
8241                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
8242                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
8243                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
8244                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
8245    }
8246
8247    /**
8248     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
8249     * selection is initiated in this View.
8250     *
8251     * The standard implementation populates the menu with a subset of Select All, Cut, Copy and
8252     * Paste actions, depending on what this View supports.
8253     *
8254     * A custom implementation can add new entries in the default menu in its
8255     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The
8256     * default actions can also be removed from the menu using {@link Menu#removeItem(int)} and
8257     * passing {@link android.R.id#selectAll}, {@link android.R.id#cut}, {@link android.R.id#copy}
8258     * or {@link android.R.id#paste} ids as parameters.
8259     *
8260     * Returning false from
8261     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will prevent
8262     * the action mode from being started.
8263     *
8264     * Action click events should be handled by the custom implementation of
8265     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
8266     *
8267     * Note that text selection mode is not started when a TextView receives focus and the
8268     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
8269     * that case, to allow for quick replacement.
8270     */
8271    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
8272        createEditorIfNeeded();
8273        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
8274    }
8275
8276    /**
8277     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
8278     *
8279     * @return The current custom selection callback.
8280     */
8281    public ActionMode.Callback getCustomSelectionActionModeCallback() {
8282        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
8283    }
8284
8285    /**
8286     * @hide
8287     */
8288    protected void stopSelectionActionMode() {
8289        mEditor.stopSelectionActionMode();
8290    }
8291
8292    boolean canCut() {
8293        if (hasPasswordTransformationMethod()) {
8294            return false;
8295        }
8296
8297        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
8298                mEditor.mKeyListener != null) {
8299            return true;
8300        }
8301
8302        return false;
8303    }
8304
8305    boolean canCopy() {
8306        if (hasPasswordTransformationMethod()) {
8307            return false;
8308        }
8309
8310        if (mText.length() > 0 && hasSelection()) {
8311            return true;
8312        }
8313
8314        return false;
8315    }
8316
8317    boolean canPaste() {
8318        return (mText instanceof Editable &&
8319                mEditor != null && mEditor.mKeyListener != null &&
8320                getSelectionStart() >= 0 &&
8321                getSelectionEnd() >= 0 &&
8322                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
8323                hasPrimaryClip());
8324    }
8325
8326    boolean selectAllText() {
8327        final int length = mText.length();
8328        Selection.setSelection((Spannable) mText, 0, length);
8329        return length > 0;
8330    }
8331
8332    /**
8333     * Prepare text so that there are not zero or two spaces at beginning and end of region defined
8334     * by [min, max] when replacing this region by paste.
8335     * Note that if there were two spaces (or more) at that position before, they are kept. We just
8336     * make sure we do not add an extra one from the paste content.
8337     */
8338    long prepareSpacesAroundPaste(int min, int max, CharSequence paste) {
8339        if (paste.length() > 0) {
8340            if (min > 0) {
8341                final char charBefore = mTransformed.charAt(min - 1);
8342                final char charAfter = paste.charAt(0);
8343
8344                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8345                    // Two spaces at beginning of paste: remove one
8346                    final int originalLength = mText.length();
8347                    deleteText_internal(min - 1, min);
8348                    // Due to filters, there is no guarantee that exactly one character was
8349                    // removed: count instead.
8350                    final int delta = mText.length() - originalLength;
8351                    min += delta;
8352                    max += delta;
8353                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8354                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8355                    // No space at beginning of paste: add one
8356                    final int originalLength = mText.length();
8357                    replaceText_internal(min, min, " ");
8358                    // Taking possible filters into account as above.
8359                    final int delta = mText.length() - originalLength;
8360                    min += delta;
8361                    max += delta;
8362                }
8363            }
8364
8365            if (max < mText.length()) {
8366                final char charBefore = paste.charAt(paste.length() - 1);
8367                final char charAfter = mTransformed.charAt(max);
8368
8369                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8370                    // Two spaces at end of paste: remove one
8371                    deleteText_internal(max, max + 1);
8372                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8373                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8374                    // No space at end of paste: add one
8375                    replaceText_internal(max, max, " ");
8376                }
8377            }
8378        }
8379
8380        return TextUtils.packRangeInLong(min, max);
8381    }
8382
8383    /**
8384     * Paste clipboard content between min and max positions.
8385     */
8386    private void paste(int min, int max) {
8387        ClipboardManager clipboard =
8388            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
8389        ClipData clip = clipboard.getPrimaryClip();
8390        if (clip != null) {
8391            boolean didFirst = false;
8392            for (int i=0; i<clip.getItemCount(); i++) {
8393                CharSequence paste = clip.getItemAt(i).coerceToStyledText(getContext());
8394                if (paste != null) {
8395                    if (!didFirst) {
8396                        long minMax = prepareSpacesAroundPaste(min, max, paste);
8397                        min = TextUtils.unpackRangeStartFromLong(minMax);
8398                        max = TextUtils.unpackRangeEndFromLong(minMax);
8399                        Selection.setSelection((Spannable) mText, max);
8400                        ((Editable) mText).replace(min, max, paste);
8401                        didFirst = true;
8402                    } else {
8403                        ((Editable) mText).insert(getSelectionEnd(), "\n");
8404                        ((Editable) mText).insert(getSelectionEnd(), paste);
8405                    }
8406                }
8407            }
8408            stopSelectionActionMode();
8409            LAST_CUT_OR_COPY_TIME = 0;
8410        }
8411    }
8412
8413    private void setPrimaryClip(ClipData clip) {
8414        ClipboardManager clipboard = (ClipboardManager) getContext().
8415                getSystemService(Context.CLIPBOARD_SERVICE);
8416        clipboard.setPrimaryClip(clip);
8417        LAST_CUT_OR_COPY_TIME = SystemClock.uptimeMillis();
8418    }
8419
8420    /**
8421     * Get the character offset closest to the specified absolute position. A typical use case is to
8422     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
8423     *
8424     * @param x The horizontal absolute position of a point on screen
8425     * @param y The vertical absolute position of a point on screen
8426     * @return the character offset for the character whose position is closest to the specified
8427     *  position. Returns -1 if there is no layout.
8428     */
8429    public int getOffsetForPosition(float x, float y) {
8430        if (getLayout() == null) return -1;
8431        final int line = getLineAtCoordinate(y);
8432        final int offset = getOffsetAtCoordinate(line, x);
8433        return offset;
8434    }
8435
8436    float convertToLocalHorizontalCoordinate(float x) {
8437        x -= getTotalPaddingLeft();
8438        // Clamp the position to inside of the view.
8439        x = Math.max(0.0f, x);
8440        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
8441        x += getScrollX();
8442        return x;
8443    }
8444
8445    int getLineAtCoordinate(float y) {
8446        y -= getTotalPaddingTop();
8447        // Clamp the position to inside of the view.
8448        y = Math.max(0.0f, y);
8449        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
8450        y += getScrollY();
8451        return getLayout().getLineForVertical((int) y);
8452    }
8453
8454    private int getOffsetAtCoordinate(int line, float x) {
8455        x = convertToLocalHorizontalCoordinate(x);
8456        return getLayout().getOffsetForHorizontal(line, x);
8457    }
8458
8459    @Override
8460    public boolean onDragEvent(DragEvent event) {
8461        switch (event.getAction()) {
8462            case DragEvent.ACTION_DRAG_STARTED:
8463                return mEditor != null && mEditor.hasInsertionController();
8464
8465            case DragEvent.ACTION_DRAG_ENTERED:
8466                TextView.this.requestFocus();
8467                return true;
8468
8469            case DragEvent.ACTION_DRAG_LOCATION:
8470                final int offset = getOffsetForPosition(event.getX(), event.getY());
8471                Selection.setSelection((Spannable)mText, offset);
8472                return true;
8473
8474            case DragEvent.ACTION_DROP:
8475                if (mEditor != null) mEditor.onDrop(event);
8476                return true;
8477
8478            case DragEvent.ACTION_DRAG_ENDED:
8479            case DragEvent.ACTION_DRAG_EXITED:
8480            default:
8481                return true;
8482        }
8483    }
8484
8485    boolean isInBatchEditMode() {
8486        if (mEditor == null) return false;
8487        final Editor.InputMethodState ims = mEditor.mInputMethodState;
8488        if (ims != null) {
8489            return ims.mBatchEditNesting > 0;
8490        }
8491        return mEditor.mInBatchEditControllers;
8492    }
8493
8494    TextDirectionHeuristic getTextDirectionHeuristic() {
8495        if (hasPasswordTransformationMethod()) {
8496            // passwords fields should be LTR
8497            return TextDirectionHeuristics.LTR;
8498        }
8499
8500        // Always need to resolve layout direction first
8501        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
8502
8503        // Now, we can select the heuristic
8504        switch (getTextDirection()) {
8505            default:
8506            case TEXT_DIRECTION_FIRST_STRONG:
8507                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
8508                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
8509            case TEXT_DIRECTION_ANY_RTL:
8510                return TextDirectionHeuristics.ANYRTL_LTR;
8511            case TEXT_DIRECTION_LTR:
8512                return TextDirectionHeuristics.LTR;
8513            case TEXT_DIRECTION_RTL:
8514                return TextDirectionHeuristics.RTL;
8515            case TEXT_DIRECTION_LOCALE:
8516                return TextDirectionHeuristics.LOCALE;
8517        }
8518    }
8519
8520    /**
8521     * @hide
8522     */
8523    @Override
8524    public void onResolveDrawables(int layoutDirection) {
8525        // No need to resolve twice
8526        if (mLastLayoutDirection == layoutDirection) {
8527            return;
8528        }
8529        mLastLayoutDirection = layoutDirection;
8530
8531        // Resolve drawables
8532        if (mDrawables != null) {
8533            mDrawables.resolveWithLayoutDirection(layoutDirection);
8534        }
8535    }
8536
8537    /**
8538     * @hide
8539     */
8540    protected void resetResolvedDrawables() {
8541        super.resetResolvedDrawables();
8542        mLastLayoutDirection = -1;
8543    }
8544
8545    /**
8546     * @hide
8547     */
8548    protected void viewClicked(InputMethodManager imm) {
8549        if (imm != null) {
8550            imm.viewClicked(this);
8551        }
8552    }
8553
8554    /**
8555     * Deletes the range of text [start, end[.
8556     * @hide
8557     */
8558    protected void deleteText_internal(int start, int end) {
8559        ((Editable) mText).delete(start, end);
8560    }
8561
8562    /**
8563     * Replaces the range of text [start, end[ by replacement text
8564     * @hide
8565     */
8566    protected void replaceText_internal(int start, int end, CharSequence text) {
8567        ((Editable) mText).replace(start, end, text);
8568    }
8569
8570    /**
8571     * Sets a span on the specified range of text
8572     * @hide
8573     */
8574    protected void setSpan_internal(Object span, int start, int end, int flags) {
8575        ((Editable) mText).setSpan(span, start, end, flags);
8576    }
8577
8578    /**
8579     * Moves the cursor to the specified offset position in text
8580     * @hide
8581     */
8582    protected void setCursorPosition_internal(int start, int end) {
8583        Selection.setSelection(((Editable) mText), start, end);
8584    }
8585
8586    /**
8587     * An Editor should be created as soon as any of the editable-specific fields (grouped
8588     * inside the Editor object) is assigned to a non-default value.
8589     * This method will create the Editor if needed.
8590     *
8591     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
8592     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
8593     * Editor for backward compatibility, as soon as one of these fields is assigned.
8594     *
8595     * Also note that for performance reasons, the mEditor is created when needed, but not
8596     * reset when no more edit-specific fields are needed.
8597     */
8598    private void createEditorIfNeeded() {
8599        if (mEditor == null) {
8600            mEditor = new Editor(this);
8601        }
8602    }
8603
8604    /**
8605     * @hide
8606     */
8607    @Override
8608    public CharSequence getIterableTextForAccessibility() {
8609        if (!TextUtils.isEmpty(mText)) {
8610            if (!(mText instanceof Spannable)) {
8611                setText(mText, BufferType.SPANNABLE);
8612            }
8613            return mText;
8614        }
8615        return super.getIterableTextForAccessibility();
8616    }
8617
8618    /**
8619     * @hide
8620     */
8621    @Override
8622    public TextSegmentIterator getIteratorForGranularity(int granularity) {
8623        switch (granularity) {
8624            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
8625                Spannable text = (Spannable) getIterableTextForAccessibility();
8626                if (!TextUtils.isEmpty(text) && getLayout() != null) {
8627                    AccessibilityIterators.LineTextSegmentIterator iterator =
8628                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
8629                    iterator.initialize(text, getLayout());
8630                    return iterator;
8631                }
8632            } break;
8633            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
8634                Spannable text = (Spannable) getIterableTextForAccessibility();
8635                if (!TextUtils.isEmpty(text) && getLayout() != null) {
8636                    AccessibilityIterators.PageTextSegmentIterator iterator =
8637                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
8638                    iterator.initialize(this);
8639                    return iterator;
8640                }
8641            } break;
8642        }
8643        return super.getIteratorForGranularity(granularity);
8644    }
8645
8646    /**
8647     * @hide
8648     */
8649    @Override
8650    public int getAccessibilitySelectionStart() {
8651        if (TextUtils.isEmpty(getContentDescription())) {
8652            final int selectionStart = getSelectionStart();
8653            if (selectionStart >= 0) {
8654                return selectionStart;
8655            }
8656        }
8657        return ACCESSIBILITY_CURSOR_POSITION_UNDEFINED;
8658    }
8659
8660    /**
8661     * @hide
8662     */
8663    public boolean isAccessibilitySelectionExtendable() {
8664        return true;
8665    }
8666
8667    /**
8668     * @hide
8669     */
8670    @Override
8671    public int getAccessibilitySelectionEnd() {
8672        if (TextUtils.isEmpty(getContentDescription())) {
8673            final int selectionEnd = getSelectionEnd();
8674            if (selectionEnd >= 0) {
8675                return selectionEnd;
8676            }
8677        }
8678        return ACCESSIBILITY_CURSOR_POSITION_UNDEFINED;
8679    }
8680
8681    /**
8682     * @hide
8683     */
8684    @Override
8685    public void setAccessibilitySelection(int start, int end) {
8686        if (getAccessibilitySelectionStart() == start
8687                && getAccessibilitySelectionEnd() == end) {
8688            return;
8689        }
8690        CharSequence text = getIterableTextForAccessibility();
8691        if (start >= 0 && start <= end && end <= text.length()) {
8692            Selection.setSelection((Spannable) text, start, end);
8693        } else {
8694            Selection.removeSelection((Spannable) text);
8695        }
8696    }
8697
8698    /**
8699     * User interface state that is stored by TextView for implementing
8700     * {@link View#onSaveInstanceState}.
8701     */
8702    public static class SavedState extends BaseSavedState {
8703        int selStart;
8704        int selEnd;
8705        CharSequence text;
8706        boolean frozenWithFocus;
8707        CharSequence error;
8708
8709        SavedState(Parcelable superState) {
8710            super(superState);
8711        }
8712
8713        @Override
8714        public void writeToParcel(Parcel out, int flags) {
8715            super.writeToParcel(out, flags);
8716            out.writeInt(selStart);
8717            out.writeInt(selEnd);
8718            out.writeInt(frozenWithFocus ? 1 : 0);
8719            TextUtils.writeToParcel(text, out, flags);
8720
8721            if (error == null) {
8722                out.writeInt(0);
8723            } else {
8724                out.writeInt(1);
8725                TextUtils.writeToParcel(error, out, flags);
8726            }
8727        }
8728
8729        @Override
8730        public String toString() {
8731            String str = "TextView.SavedState{"
8732                    + Integer.toHexString(System.identityHashCode(this))
8733                    + " start=" + selStart + " end=" + selEnd;
8734            if (text != null) {
8735                str += " text=" + text;
8736            }
8737            return str + "}";
8738        }
8739
8740        @SuppressWarnings("hiding")
8741        public static final Parcelable.Creator<SavedState> CREATOR
8742                = new Parcelable.Creator<SavedState>() {
8743            public SavedState createFromParcel(Parcel in) {
8744                return new SavedState(in);
8745            }
8746
8747            public SavedState[] newArray(int size) {
8748                return new SavedState[size];
8749            }
8750        };
8751
8752        private SavedState(Parcel in) {
8753            super(in);
8754            selStart = in.readInt();
8755            selEnd = in.readInt();
8756            frozenWithFocus = (in.readInt() != 0);
8757            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8758
8759            if (in.readInt() != 0) {
8760                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8761            }
8762        }
8763    }
8764
8765    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
8766        private char[] mChars;
8767        private int mStart, mLength;
8768
8769        public CharWrapper(char[] chars, int start, int len) {
8770            mChars = chars;
8771            mStart = start;
8772            mLength = len;
8773        }
8774
8775        /* package */ void set(char[] chars, int start, int len) {
8776            mChars = chars;
8777            mStart = start;
8778            mLength = len;
8779        }
8780
8781        public int length() {
8782            return mLength;
8783        }
8784
8785        public char charAt(int off) {
8786            return mChars[off + mStart];
8787        }
8788
8789        @Override
8790        public String toString() {
8791            return new String(mChars, mStart, mLength);
8792        }
8793
8794        public CharSequence subSequence(int start, int end) {
8795            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8796                throw new IndexOutOfBoundsException(start + ", " + end);
8797            }
8798
8799            return new String(mChars, start + mStart, end - start);
8800        }
8801
8802        public void getChars(int start, int end, char[] buf, int off) {
8803            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8804                throw new IndexOutOfBoundsException(start + ", " + end);
8805            }
8806
8807            System.arraycopy(mChars, start + mStart, buf, off, end - start);
8808        }
8809
8810        public void drawText(Canvas c, int start, int end,
8811                             float x, float y, Paint p) {
8812            c.drawText(mChars, start + mStart, end - start, x, y, p);
8813        }
8814
8815        public void drawTextRun(Canvas c, int start, int end,
8816                int contextStart, int contextEnd, float x, float y, int flags, Paint p) {
8817            int count = end - start;
8818            int contextCount = contextEnd - contextStart;
8819            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
8820                    contextCount, x, y, flags, p);
8821        }
8822
8823        public float measureText(int start, int end, Paint p) {
8824            return p.measureText(mChars, start + mStart, end - start);
8825        }
8826
8827        public int getTextWidths(int start, int end, float[] widths, Paint p) {
8828            return p.getTextWidths(mChars, start + mStart, end - start, widths);
8829        }
8830
8831        public float getTextRunAdvances(int start, int end, int contextStart,
8832                int contextEnd, int flags, float[] advances, int advancesIndex,
8833                Paint p) {
8834            int count = end - start;
8835            int contextCount = contextEnd - contextStart;
8836            return p.getTextRunAdvances(mChars, start + mStart, count,
8837                    contextStart + mStart, contextCount, flags, advances,
8838                    advancesIndex);
8839        }
8840
8841        public int getTextRunCursor(int contextStart, int contextEnd, int flags,
8842                int offset, int cursorOpt, Paint p) {
8843            int contextCount = contextEnd - contextStart;
8844            return p.getTextRunCursor(mChars, contextStart + mStart,
8845                    contextCount, flags, offset + mStart, cursorOpt);
8846        }
8847    }
8848
8849    private static final class Marquee extends Handler {
8850        // TODO: Add an option to configure this
8851        private static final float MARQUEE_DELTA_MAX = 0.07f;
8852        private static final int MARQUEE_DELAY = 1200;
8853        private static final int MARQUEE_RESTART_DELAY = 1200;
8854        private static final int MARQUEE_RESOLUTION = 1000 / 30;
8855        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
8856
8857        private static final byte MARQUEE_STOPPED = 0x0;
8858        private static final byte MARQUEE_STARTING = 0x1;
8859        private static final byte MARQUEE_RUNNING = 0x2;
8860
8861        private static final int MESSAGE_START = 0x1;
8862        private static final int MESSAGE_TICK = 0x2;
8863        private static final int MESSAGE_RESTART = 0x3;
8864
8865        private final WeakReference<TextView> mView;
8866
8867        private byte mStatus = MARQUEE_STOPPED;
8868        private final float mScrollUnit;
8869        private float mMaxScroll;
8870        private float mMaxFadeScroll;
8871        private float mGhostStart;
8872        private float mGhostOffset;
8873        private float mFadeStop;
8874        private int mRepeatLimit;
8875
8876        private float mScroll;
8877
8878        Marquee(TextView v) {
8879            final float density = v.getContext().getResources().getDisplayMetrics().density;
8880            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / MARQUEE_RESOLUTION;
8881            mView = new WeakReference<TextView>(v);
8882        }
8883
8884        @Override
8885        public void handleMessage(Message msg) {
8886            switch (msg.what) {
8887                case MESSAGE_START:
8888                    mStatus = MARQUEE_RUNNING;
8889                    tick();
8890                    break;
8891                case MESSAGE_TICK:
8892                    tick();
8893                    break;
8894                case MESSAGE_RESTART:
8895                    if (mStatus == MARQUEE_RUNNING) {
8896                        if (mRepeatLimit >= 0) {
8897                            mRepeatLimit--;
8898                        }
8899                        start(mRepeatLimit);
8900                    }
8901                    break;
8902            }
8903        }
8904
8905        void tick() {
8906            if (mStatus != MARQUEE_RUNNING) {
8907                return;
8908            }
8909
8910            removeMessages(MESSAGE_TICK);
8911
8912            final TextView textView = mView.get();
8913            if (textView != null && (textView.isFocused() || textView.isSelected())) {
8914                mScroll += mScrollUnit;
8915                if (mScroll > mMaxScroll) {
8916                    mScroll = mMaxScroll;
8917                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
8918                } else {
8919                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
8920                }
8921                textView.invalidate();
8922            }
8923        }
8924
8925        void stop() {
8926            mStatus = MARQUEE_STOPPED;
8927            removeMessages(MESSAGE_START);
8928            removeMessages(MESSAGE_RESTART);
8929            removeMessages(MESSAGE_TICK);
8930            resetScroll();
8931        }
8932
8933        private void resetScroll() {
8934            mScroll = 0.0f;
8935            final TextView textView = mView.get();
8936            if (textView != null) textView.invalidate();
8937        }
8938
8939        void start(int repeatLimit) {
8940            if (repeatLimit == 0) {
8941                stop();
8942                return;
8943            }
8944            mRepeatLimit = repeatLimit;
8945            final TextView textView = mView.get();
8946            if (textView != null && textView.mLayout != null) {
8947                mStatus = MARQUEE_STARTING;
8948                mScroll = 0.0f;
8949                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
8950                        textView.getCompoundPaddingRight();
8951                final float lineWidth = textView.mLayout.getLineWidth(0);
8952                final float gap = textWidth / 3.0f;
8953                mGhostStart = lineWidth - textWidth + gap;
8954                mMaxScroll = mGhostStart + textWidth;
8955                mGhostOffset = lineWidth + gap;
8956                mFadeStop = lineWidth + textWidth / 6.0f;
8957                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
8958
8959                textView.invalidate();
8960                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
8961            }
8962        }
8963
8964        float getGhostOffset() {
8965            return mGhostOffset;
8966        }
8967
8968        float getScroll() {
8969            return mScroll;
8970        }
8971
8972        float getMaxFadeScroll() {
8973            return mMaxFadeScroll;
8974        }
8975
8976        boolean shouldDrawLeftFade() {
8977            return mScroll <= mFadeStop;
8978        }
8979
8980        boolean shouldDrawGhost() {
8981            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
8982        }
8983
8984        boolean isRunning() {
8985            return mStatus == MARQUEE_RUNNING;
8986        }
8987
8988        boolean isStopped() {
8989            return mStatus == MARQUEE_STOPPED;
8990        }
8991    }
8992
8993    private class ChangeWatcher implements TextWatcher, SpanWatcher {
8994
8995        private CharSequence mBeforeText;
8996
8997        public void beforeTextChanged(CharSequence buffer, int start,
8998                                      int before, int after) {
8999            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
9000                    + " before=" + before + " after=" + after + ": " + buffer);
9001
9002            if (AccessibilityManager.getInstance(mContext).isEnabled()
9003                    && ((!isPasswordInputType(getInputType()) && !hasPasswordTransformationMethod())
9004                            || shouldSpeakPasswordsForAccessibility())) {
9005                mBeforeText = buffer.toString();
9006            }
9007
9008            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
9009        }
9010
9011        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
9012            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
9013                    + " before=" + before + " after=" + after + ": " + buffer);
9014            TextView.this.handleTextChanged(buffer, start, before, after);
9015
9016            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
9017                    (isFocused() || isSelected() && isShown())) {
9018                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
9019                mBeforeText = null;
9020            }
9021        }
9022
9023        public void afterTextChanged(Editable buffer) {
9024            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
9025            TextView.this.sendAfterTextChanged(buffer);
9026
9027            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
9028                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
9029            }
9030        }
9031
9032        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
9033            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
9034                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
9035            TextView.this.spanChange(buf, what, s, st, e, en);
9036        }
9037
9038        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
9039            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
9040                    + " what=" + what + ": " + buf);
9041            TextView.this.spanChange(buf, what, -1, s, -1, e);
9042        }
9043
9044        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
9045            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
9046                    + " what=" + what + ": " + buf);
9047            TextView.this.spanChange(buf, what, s, -1, e, -1);
9048        }
9049    }
9050}
9051