TextView.java revision 857c341dfe36324fb32d7debc06d536cd8a9add1 
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.widget;
18
19import android.R;
20import android.content.ClipData;
21import android.content.ClipboardManager;
22import android.content.Context;
23import android.content.res.ColorStateList;
24import android.content.res.CompatibilityInfo;
25import android.content.res.Resources;
26import android.content.res.TypedArray;
27import android.content.res.XmlResourceParser;
28import android.graphics.Canvas;
29import android.graphics.Paint;
30import android.graphics.Path;
31import android.graphics.Rect;
32import android.graphics.RectF;
33import android.graphics.Typeface;
34import android.graphics.drawable.Drawable;
35import android.inputmethodservice.ExtractEditText;
36import android.os.Bundle;
37import android.os.Handler;
38import android.os.Message;
39import android.os.Parcel;
40import android.os.Parcelable;
41import android.os.SystemClock;
42import android.provider.Settings;
43import android.text.BoringLayout;
44import android.text.DynamicLayout;
45import android.text.Editable;
46import android.text.GetChars;
47import android.text.GraphicsOperations;
48import android.text.InputFilter;
49import android.text.InputType;
50import android.text.Layout;
51import android.text.ParcelableSpan;
52import android.text.Selection;
53import android.text.SpanWatcher;
54import android.text.Spannable;
55import android.text.SpannableString;
56import android.text.Spanned;
57import android.text.SpannedString;
58import android.text.StaticLayout;
59import android.text.TextDirectionHeuristic;
60import android.text.TextDirectionHeuristics;
61import android.text.TextPaint;
62import android.text.TextUtils;
63import android.text.TextUtils.TruncateAt;
64import android.text.TextWatcher;
65import android.text.method.AllCapsTransformationMethod;
66import android.text.method.ArrowKeyMovementMethod;
67import android.text.method.DateKeyListener;
68import android.text.method.DateTimeKeyListener;
69import android.text.method.DialerKeyListener;
70import android.text.method.DigitsKeyListener;
71import android.text.method.KeyListener;
72import android.text.method.LinkMovementMethod;
73import android.text.method.MetaKeyKeyListener;
74import android.text.method.MovementMethod;
75import android.text.method.PasswordTransformationMethod;
76import android.text.method.SingleLineTransformationMethod;
77import android.text.method.TextKeyListener;
78import android.text.method.TimeKeyListener;
79import android.text.method.TransformationMethod;
80import android.text.method.TransformationMethod2;
81import android.text.method.WordIterator;
82import android.text.style.CharacterStyle;
83import android.text.style.ClickableSpan;
84import android.text.style.ParagraphStyle;
85import android.text.style.SpellCheckSpan;
86import android.text.style.SuggestionSpan;
87import android.text.style.URLSpan;
88import android.text.style.UpdateAppearance;
89import android.text.util.Linkify;
90import android.util.AttributeSet;
91import android.util.FloatMath;
92import android.util.Log;
93import android.util.TypedValue;
94import android.view.AccessibilityIterators.TextSegmentIterator;
95import android.view.ActionMode;
96import android.view.DragEvent;
97import android.view.Gravity;
98import android.view.HapticFeedbackConstants;
99import android.view.KeyCharacterMap;
100import android.view.KeyEvent;
101import android.view.Menu;
102import android.view.MenuItem;
103import android.view.MotionEvent;
104import android.view.View;
105import android.view.ViewConfiguration;
106import android.view.ViewDebug;
107import android.view.ViewGroup.LayoutParams;
108import android.view.ViewRootImpl;
109import android.view.ViewTreeObserver;
110import android.view.accessibility.AccessibilityEvent;
111import android.view.accessibility.AccessibilityManager;
112import android.view.accessibility.AccessibilityNodeInfo;
113import android.view.animation.AnimationUtils;
114import android.view.inputmethod.BaseInputConnection;
115import android.view.inputmethod.CompletionInfo;
116import android.view.inputmethod.CorrectionInfo;
117import android.view.inputmethod.EditorInfo;
118import android.view.inputmethod.ExtractedText;
119import android.view.inputmethod.ExtractedTextRequest;
120import android.view.inputmethod.InputConnection;
121import android.view.inputmethod.InputMethodManager;
122import android.view.textservice.SpellCheckerSubtype;
123import android.view.textservice.TextServicesManager;
124import android.widget.RemoteViews.RemoteView;
125
126import com.android.internal.util.FastMath;
127import com.android.internal.widget.EditableInputConnection;
128
129import org.xmlpull.v1.XmlPullParserException;
130
131import java.io.IOException;
132import java.lang.ref.WeakReference;
133import java.util.ArrayList;
134import java.util.Locale;
135
136/**
137 * Displays text to the user and optionally allows them to edit it.  A TextView
138 * is a complete text editor, however the basic class is configured to not
139 * allow editing; see {@link EditText} for a subclass that configures the text
140 * view for editing.
141 *
142 * <p>
143 * <b>XML attributes</b>
144 * <p>
145 * See {@link android.R.styleable#TextView TextView Attributes},
146 * {@link android.R.styleable#View View Attributes}
147 *
148 * @attr ref android.R.styleable#TextView_text
149 * @attr ref android.R.styleable#TextView_bufferType
150 * @attr ref android.R.styleable#TextView_hint
151 * @attr ref android.R.styleable#TextView_textColor
152 * @attr ref android.R.styleable#TextView_textColorHighlight
153 * @attr ref android.R.styleable#TextView_textColorHint
154 * @attr ref android.R.styleable#TextView_textAppearance
155 * @attr ref android.R.styleable#TextView_textColorLink
156 * @attr ref android.R.styleable#TextView_textSize
157 * @attr ref android.R.styleable#TextView_textScaleX
158 * @attr ref android.R.styleable#TextView_fontFamily
159 * @attr ref android.R.styleable#TextView_typeface
160 * @attr ref android.R.styleable#TextView_textStyle
161 * @attr ref android.R.styleable#TextView_cursorVisible
162 * @attr ref android.R.styleable#TextView_maxLines
163 * @attr ref android.R.styleable#TextView_maxHeight
164 * @attr ref android.R.styleable#TextView_lines
165 * @attr ref android.R.styleable#TextView_height
166 * @attr ref android.R.styleable#TextView_minLines
167 * @attr ref android.R.styleable#TextView_minHeight
168 * @attr ref android.R.styleable#TextView_maxEms
169 * @attr ref android.R.styleable#TextView_maxWidth
170 * @attr ref android.R.styleable#TextView_ems
171 * @attr ref android.R.styleable#TextView_width
172 * @attr ref android.R.styleable#TextView_minEms
173 * @attr ref android.R.styleable#TextView_minWidth
174 * @attr ref android.R.styleable#TextView_gravity
175 * @attr ref android.R.styleable#TextView_scrollHorizontally
176 * @attr ref android.R.styleable#TextView_password
177 * @attr ref android.R.styleable#TextView_singleLine
178 * @attr ref android.R.styleable#TextView_selectAllOnFocus
179 * @attr ref android.R.styleable#TextView_includeFontPadding
180 * @attr ref android.R.styleable#TextView_maxLength
181 * @attr ref android.R.styleable#TextView_shadowColor
182 * @attr ref android.R.styleable#TextView_shadowDx
183 * @attr ref android.R.styleable#TextView_shadowDy
184 * @attr ref android.R.styleable#TextView_shadowRadius
185 * @attr ref android.R.styleable#TextView_autoLink
186 * @attr ref android.R.styleable#TextView_linksClickable
187 * @attr ref android.R.styleable#TextView_numeric
188 * @attr ref android.R.styleable#TextView_digits
189 * @attr ref android.R.styleable#TextView_phoneNumber
190 * @attr ref android.R.styleable#TextView_inputMethod
191 * @attr ref android.R.styleable#TextView_capitalize
192 * @attr ref android.R.styleable#TextView_autoText
193 * @attr ref android.R.styleable#TextView_editable
194 * @attr ref android.R.styleable#TextView_freezesText
195 * @attr ref android.R.styleable#TextView_ellipsize
196 * @attr ref android.R.styleable#TextView_drawableTop
197 * @attr ref android.R.styleable#TextView_drawableBottom
198 * @attr ref android.R.styleable#TextView_drawableRight
199 * @attr ref android.R.styleable#TextView_drawableLeft
200 * @attr ref android.R.styleable#TextView_drawableStart
201 * @attr ref android.R.styleable#TextView_drawableEnd
202 * @attr ref android.R.styleable#TextView_drawablePadding
203 * @attr ref android.R.styleable#TextView_lineSpacingExtra
204 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
205 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
206 * @attr ref android.R.styleable#TextView_inputType
207 * @attr ref android.R.styleable#TextView_imeOptions
208 * @attr ref android.R.styleable#TextView_privateImeOptions
209 * @attr ref android.R.styleable#TextView_imeActionLabel
210 * @attr ref android.R.styleable#TextView_imeActionId
211 * @attr ref android.R.styleable#TextView_editorExtras
212 */
213@RemoteView
214public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
215    static final String LOG_TAG = "TextView";
216    static final boolean DEBUG_EXTRACT = false;
217
218    // Enum for the "typeface" XML parameter.
219    // TODO: How can we get this from the XML instead of hardcoding it here?
220    private static final int SANS = 1;
221    private static final int SERIF = 2;
222    private static final int MONOSPACE = 3;
223
224    // Bitfield for the "numeric" XML parameter.
225    // TODO: How can we get this from the XML instead of hardcoding it here?
226    private static final int SIGNED = 2;
227    private static final int DECIMAL = 4;
228
229    /**
230     * Draw marquee text with fading edges as usual
231     */
232    private static final int MARQUEE_FADE_NORMAL = 0;
233
234    /**
235     * Draw marquee text as ellipsize end while inactive instead of with the fade.
236     * (Useful for devices where the fade can be expensive if overdone)
237     */
238    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
239
240    /**
241     * Draw marquee text with fading edges because it is currently active/animating.
242     */
243    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
244
245    private static final int LINES = 1;
246    private static final int EMS = LINES;
247    private static final int PIXELS = 2;
248
249    private static final RectF TEMP_RECTF = new RectF();
250
251    // XXX should be much larger
252    private static final int VERY_WIDE = 1024*1024;
253    private static final int ANIMATED_SCROLL_GAP = 250;
254
255    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
256    private static final Spanned EMPTY_SPANNED = new SpannedString("");
257
258    private static final int CHANGE_WATCHER_PRIORITY = 100;
259
260    // New state used to change background based on whether this TextView is multiline.
261    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
262
263    // System wide time for last cut or copy action.
264    static long LAST_CUT_OR_COPY_TIME;
265
266    private ColorStateList mTextColor;
267    private ColorStateList mHintTextColor;
268    private ColorStateList mLinkTextColor;
269    private int mCurTextColor;
270    private int mCurHintTextColor;
271    private boolean mFreezesText;
272    private boolean mTemporaryDetach;
273    private boolean mDispatchTemporaryDetach;
274
275    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
276    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
277
278    private float mShadowRadius, mShadowDx, mShadowDy;
279
280    private boolean mPreDrawRegistered;
281
282    private TextUtils.TruncateAt mEllipsize;
283
284    static class Drawables {
285        final Rect mCompoundRect = new Rect();
286        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight,
287                mDrawableStart, mDrawableEnd;
288        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
289                mDrawableSizeStart, mDrawableSizeEnd;
290        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
291                mDrawableHeightStart, mDrawableHeightEnd;
292        int mDrawablePadding;
293    }
294    Drawables mDrawables;
295
296    private CharWrapper mCharWrapper;
297
298    private Marquee mMarquee;
299    private boolean mRestartMarquee;
300
301    private int mMarqueeRepeatLimit = 3;
302
303    // The alignment to pass to Layout, or null if not resolved.
304    private Layout.Alignment mLayoutAlignment;
305
306    private boolean mResolvedDrawables;
307
308    /**
309     * On some devices the fading edges add a performance penalty if used
310     * extensively in the same layout. This mode indicates how the marquee
311     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
312     */
313    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
314
315    /**
316     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
317     * the layout that should be used when the mode switches.
318     */
319    private Layout mSavedMarqueeModeLayout;
320
321    @ViewDebug.ExportedProperty(category = "text")
322    private CharSequence mText;
323    private CharSequence mTransformed;
324    private BufferType mBufferType = BufferType.NORMAL;
325
326    private CharSequence mHint;
327    private Layout mHintLayout;
328
329    private MovementMethod mMovement;
330
331    private TransformationMethod mTransformation;
332    private boolean mAllowTransformationLengthChange;
333    private ChangeWatcher mChangeWatcher;
334
335    private ArrayList<TextWatcher> mListeners;
336
337    // display attributes
338    private final TextPaint mTextPaint;
339    private boolean mUserSetTextScaleX;
340    private Layout mLayout;
341
342    private int mGravity = Gravity.TOP | Gravity.START;
343    private boolean mHorizontallyScrolling;
344
345    private int mAutoLinkMask;
346    private boolean mLinksClickable = true;
347
348    private float mSpacingMult = 1.0f;
349    private float mSpacingAdd = 0.0f;
350
351    private int mMaximum = Integer.MAX_VALUE;
352    private int mMaxMode = LINES;
353    private int mMinimum = 0;
354    private int mMinMode = LINES;
355
356    private int mOldMaximum = mMaximum;
357    private int mOldMaxMode = mMaxMode;
358
359    private int mMaxWidth = Integer.MAX_VALUE;
360    private int mMaxWidthMode = PIXELS;
361    private int mMinWidth = 0;
362    private int mMinWidthMode = PIXELS;
363
364    private boolean mSingleLine;
365    private int mDesiredHeightAtMeasure = -1;
366    private boolean mIncludePad = true;
367
368    // tmp primitives, so we don't alloc them on each draw
369    private Rect mTempRect;
370    private long mLastScroll;
371    private Scroller mScroller;
372
373    private BoringLayout.Metrics mBoring, mHintBoring;
374    private BoringLayout mSavedLayout, mSavedHintLayout;
375
376    private TextDirectionHeuristic mTextDir;
377
378    private InputFilter[] mFilters = NO_FILTERS;
379
380    // It is possible to have a selection even when mEditor is null (programmatically set, like when
381    // a link is pressed). These highlight-related fields do not go in mEditor.
382    int mHighlightColor = 0x6633B5E5;
383    private Path mHighlightPath;
384    private final Paint mHighlightPaint;
385    private boolean mHighlightPathBogus = true;
386
387    // Although these fields are specific to editable text, they are not added to Editor because
388    // they are defined by the TextView's style and are theme-dependent.
389    int mCursorDrawableRes;
390    // These four fields, could be moved to Editor, since we know their default values and we
391    // could condition the creation of the Editor to a non standard value. This is however
392    // brittle since the hardcoded values here (such as
393    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
394    // default style is modified.
395    int mTextSelectHandleLeftRes;
396    int mTextSelectHandleRightRes;
397    int mTextSelectHandleRes;
398    int mTextEditSuggestionItemLayout;
399
400    /**
401     * EditText specific data, created on demand when one of the Editor fields is used.
402     * See {@link #createEditorIfNeeded()}.
403     */
404    private Editor mEditor;
405
406    /*
407     * Kick-start the font cache for the zygote process (to pay the cost of
408     * initializing freetype for our default font only once).
409     */
410    static {
411        Paint p = new Paint();
412        p.setAntiAlias(true);
413        // We don't care about the result, just the side-effect of measuring.
414        p.measureText("H");
415    }
416
417    /**
418     * Interface definition for a callback to be invoked when an action is
419     * performed on the editor.
420     */
421    public interface OnEditorActionListener {
422        /**
423         * Called when an action is being performed.
424         *
425         * @param v The view that was clicked.
426         * @param actionId Identifier of the action.  This will be either the
427         * identifier you supplied, or {@link EditorInfo#IME_NULL
428         * EditorInfo.IME_NULL} if being called due to the enter key
429         * being pressed.
430         * @param event If triggered by an enter key, this is the event;
431         * otherwise, this is null.
432         * @return Return true if you have consumed the action, else false.
433         */
434        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
435    }
436
437    public TextView(Context context) {
438        this(context, null);
439    }
440
441    public TextView(Context context, AttributeSet attrs) {
442        this(context, attrs, com.android.internal.R.attr.textViewStyle);
443    }
444
445    @SuppressWarnings("deprecation")
446    public TextView(Context context, AttributeSet attrs, int defStyle) {
447        super(context, attrs, defStyle);
448        mText = "";
449
450        final Resources res = getResources();
451        final CompatibilityInfo compat = res.getCompatibilityInfo();
452
453        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
454        mTextPaint.density = res.getDisplayMetrics().density;
455        mTextPaint.setCompatibilityScaling(compat.applicationScale);
456
457        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
458        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
459
460        mMovement = getDefaultMovementMethod();
461
462        mTransformation = null;
463
464        int textColorHighlight = 0;
465        ColorStateList textColor = null;
466        ColorStateList textColorHint = null;
467        ColorStateList textColorLink = null;
468        int textSize = 15;
469        String fontFamily = null;
470        int typefaceIndex = -1;
471        int styleIndex = -1;
472        boolean allCaps = false;
473
474        final Resources.Theme theme = context.getTheme();
475
476        /*
477         * Look the appearance up without checking first if it exists because
478         * almost every TextView has one and it greatly simplifies the logic
479         * to be able to parse the appearance first and then let specific tags
480         * for this View override it.
481         */
482        TypedArray a = theme.obtainStyledAttributes(
483                    attrs, com.android.internal.R.styleable.TextViewAppearance, defStyle, 0);
484        TypedArray appearance = null;
485        int ap = a.getResourceId(
486                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
487        a.recycle();
488        if (ap != -1) {
489            appearance = theme.obtainStyledAttributes(
490                    ap, com.android.internal.R.styleable.TextAppearance);
491        }
492        if (appearance != null) {
493            int n = appearance.getIndexCount();
494            for (int i = 0; i < n; i++) {
495                int attr = appearance.getIndex(i);
496
497                switch (attr) {
498                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
499                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
500                    break;
501
502                case com.android.internal.R.styleable.TextAppearance_textColor:
503                    textColor = appearance.getColorStateList(attr);
504                    break;
505
506                case com.android.internal.R.styleable.TextAppearance_textColorHint:
507                    textColorHint = appearance.getColorStateList(attr);
508                    break;
509
510                case com.android.internal.R.styleable.TextAppearance_textColorLink:
511                    textColorLink = appearance.getColorStateList(attr);
512                    break;
513
514                case com.android.internal.R.styleable.TextAppearance_textSize:
515                    textSize = appearance.getDimensionPixelSize(attr, textSize);
516                    break;
517
518                case com.android.internal.R.styleable.TextAppearance_typeface:
519                    typefaceIndex = appearance.getInt(attr, -1);
520                    break;
521
522                case com.android.internal.R.styleable.TextAppearance_fontFamily:
523                    fontFamily = appearance.getString(attr);
524                    break;
525
526                case com.android.internal.R.styleable.TextAppearance_textStyle:
527                    styleIndex = appearance.getInt(attr, -1);
528                    break;
529
530                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
531                    allCaps = appearance.getBoolean(attr, false);
532                    break;
533                }
534            }
535
536            appearance.recycle();
537        }
538
539        boolean editable = getDefaultEditable();
540        CharSequence inputMethod = null;
541        int numeric = 0;
542        CharSequence digits = null;
543        boolean phone = false;
544        boolean autotext = false;
545        int autocap = -1;
546        int buffertype = 0;
547        boolean selectallonfocus = false;
548        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
549            drawableBottom = null, drawableStart = null, drawableEnd = null;
550        int drawablePadding = 0;
551        int ellipsize = -1;
552        boolean singleLine = false;
553        int maxlength = -1;
554        CharSequence text = "";
555        CharSequence hint = null;
556        int shadowcolor = 0;
557        float dx = 0, dy = 0, r = 0;
558        boolean password = false;
559        int inputType = EditorInfo.TYPE_NULL;
560
561        a = theme.obtainStyledAttributes(
562                    attrs, com.android.internal.R.styleable.TextView, defStyle, 0);
563
564        int n = a.getIndexCount();
565        for (int i = 0; i < n; i++) {
566            int attr = a.getIndex(i);
567
568            switch (attr) {
569            case com.android.internal.R.styleable.TextView_editable:
570                editable = a.getBoolean(attr, editable);
571                break;
572
573            case com.android.internal.R.styleable.TextView_inputMethod:
574                inputMethod = a.getText(attr);
575                break;
576
577            case com.android.internal.R.styleable.TextView_numeric:
578                numeric = a.getInt(attr, numeric);
579                break;
580
581            case com.android.internal.R.styleable.TextView_digits:
582                digits = a.getText(attr);
583                break;
584
585            case com.android.internal.R.styleable.TextView_phoneNumber:
586                phone = a.getBoolean(attr, phone);
587                break;
588
589            case com.android.internal.R.styleable.TextView_autoText:
590                autotext = a.getBoolean(attr, autotext);
591                break;
592
593            case com.android.internal.R.styleable.TextView_capitalize:
594                autocap = a.getInt(attr, autocap);
595                break;
596
597            case com.android.internal.R.styleable.TextView_bufferType:
598                buffertype = a.getInt(attr, buffertype);
599                break;
600
601            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
602                selectallonfocus = a.getBoolean(attr, selectallonfocus);
603                break;
604
605            case com.android.internal.R.styleable.TextView_autoLink:
606                mAutoLinkMask = a.getInt(attr, 0);
607                break;
608
609            case com.android.internal.R.styleable.TextView_linksClickable:
610                mLinksClickable = a.getBoolean(attr, true);
611                break;
612
613            case com.android.internal.R.styleable.TextView_drawableLeft:
614                drawableLeft = a.getDrawable(attr);
615                break;
616
617            case com.android.internal.R.styleable.TextView_drawableTop:
618                drawableTop = a.getDrawable(attr);
619                break;
620
621            case com.android.internal.R.styleable.TextView_drawableRight:
622                drawableRight = a.getDrawable(attr);
623                break;
624
625            case com.android.internal.R.styleable.TextView_drawableBottom:
626                drawableBottom = a.getDrawable(attr);
627                break;
628
629            case com.android.internal.R.styleable.TextView_drawableStart:
630                drawableStart = a.getDrawable(attr);
631                break;
632
633            case com.android.internal.R.styleable.TextView_drawableEnd:
634                drawableEnd = a.getDrawable(attr);
635                break;
636
637            case com.android.internal.R.styleable.TextView_drawablePadding:
638                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
639                break;
640
641            case com.android.internal.R.styleable.TextView_maxLines:
642                setMaxLines(a.getInt(attr, -1));
643                break;
644
645            case com.android.internal.R.styleable.TextView_maxHeight:
646                setMaxHeight(a.getDimensionPixelSize(attr, -1));
647                break;
648
649            case com.android.internal.R.styleable.TextView_lines:
650                setLines(a.getInt(attr, -1));
651                break;
652
653            case com.android.internal.R.styleable.TextView_height:
654                setHeight(a.getDimensionPixelSize(attr, -1));
655                break;
656
657            case com.android.internal.R.styleable.TextView_minLines:
658                setMinLines(a.getInt(attr, -1));
659                break;
660
661            case com.android.internal.R.styleable.TextView_minHeight:
662                setMinHeight(a.getDimensionPixelSize(attr, -1));
663                break;
664
665            case com.android.internal.R.styleable.TextView_maxEms:
666                setMaxEms(a.getInt(attr, -1));
667                break;
668
669            case com.android.internal.R.styleable.TextView_maxWidth:
670                setMaxWidth(a.getDimensionPixelSize(attr, -1));
671                break;
672
673            case com.android.internal.R.styleable.TextView_ems:
674                setEms(a.getInt(attr, -1));
675                break;
676
677            case com.android.internal.R.styleable.TextView_width:
678                setWidth(a.getDimensionPixelSize(attr, -1));
679                break;
680
681            case com.android.internal.R.styleable.TextView_minEms:
682                setMinEms(a.getInt(attr, -1));
683                break;
684
685            case com.android.internal.R.styleable.TextView_minWidth:
686                setMinWidth(a.getDimensionPixelSize(attr, -1));
687                break;
688
689            case com.android.internal.R.styleable.TextView_gravity:
690                setGravity(a.getInt(attr, -1));
691                break;
692
693            case com.android.internal.R.styleable.TextView_hint:
694                hint = a.getText(attr);
695                break;
696
697            case com.android.internal.R.styleable.TextView_text:
698                text = a.getText(attr);
699                break;
700
701            case com.android.internal.R.styleable.TextView_scrollHorizontally:
702                if (a.getBoolean(attr, false)) {
703                    setHorizontallyScrolling(true);
704                }
705                break;
706
707            case com.android.internal.R.styleable.TextView_singleLine:
708                singleLine = a.getBoolean(attr, singleLine);
709                break;
710
711            case com.android.internal.R.styleable.TextView_ellipsize:
712                ellipsize = a.getInt(attr, ellipsize);
713                break;
714
715            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
716                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
717                break;
718
719            case com.android.internal.R.styleable.TextView_includeFontPadding:
720                if (!a.getBoolean(attr, true)) {
721                    setIncludeFontPadding(false);
722                }
723                break;
724
725            case com.android.internal.R.styleable.TextView_cursorVisible:
726                if (!a.getBoolean(attr, true)) {
727                    setCursorVisible(false);
728                }
729                break;
730
731            case com.android.internal.R.styleable.TextView_maxLength:
732                maxlength = a.getInt(attr, -1);
733                break;
734
735            case com.android.internal.R.styleable.TextView_textScaleX:
736                setTextScaleX(a.getFloat(attr, 1.0f));
737                break;
738
739            case com.android.internal.R.styleable.TextView_freezesText:
740                mFreezesText = a.getBoolean(attr, false);
741                break;
742
743            case com.android.internal.R.styleable.TextView_shadowColor:
744                shadowcolor = a.getInt(attr, 0);
745                break;
746
747            case com.android.internal.R.styleable.TextView_shadowDx:
748                dx = a.getFloat(attr, 0);
749                break;
750
751            case com.android.internal.R.styleable.TextView_shadowDy:
752                dy = a.getFloat(attr, 0);
753                break;
754
755            case com.android.internal.R.styleable.TextView_shadowRadius:
756                r = a.getFloat(attr, 0);
757                break;
758
759            case com.android.internal.R.styleable.TextView_enabled:
760                setEnabled(a.getBoolean(attr, isEnabled()));
761                break;
762
763            case com.android.internal.R.styleable.TextView_textColorHighlight:
764                textColorHighlight = a.getColor(attr, textColorHighlight);
765                break;
766
767            case com.android.internal.R.styleable.TextView_textColor:
768                textColor = a.getColorStateList(attr);
769                break;
770
771            case com.android.internal.R.styleable.TextView_textColorHint:
772                textColorHint = a.getColorStateList(attr);
773                break;
774
775            case com.android.internal.R.styleable.TextView_textColorLink:
776                textColorLink = a.getColorStateList(attr);
777                break;
778
779            case com.android.internal.R.styleable.TextView_textSize:
780                textSize = a.getDimensionPixelSize(attr, textSize);
781                break;
782
783            case com.android.internal.R.styleable.TextView_typeface:
784                typefaceIndex = a.getInt(attr, typefaceIndex);
785                break;
786
787            case com.android.internal.R.styleable.TextView_textStyle:
788                styleIndex = a.getInt(attr, styleIndex);
789                break;
790
791            case com.android.internal.R.styleable.TextView_fontFamily:
792                fontFamily = a.getString(attr);
793                break;
794
795            case com.android.internal.R.styleable.TextView_password:
796                password = a.getBoolean(attr, password);
797                break;
798
799            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
800                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
801                break;
802
803            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
804                mSpacingMult = a.getFloat(attr, mSpacingMult);
805                break;
806
807            case com.android.internal.R.styleable.TextView_inputType:
808                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
809                break;
810
811            case com.android.internal.R.styleable.TextView_imeOptions:
812                createEditorIfNeeded();
813                mEditor.createInputContentTypeIfNeeded();
814                mEditor.mInputContentType.imeOptions = a.getInt(attr,
815                        mEditor.mInputContentType.imeOptions);
816                break;
817
818            case com.android.internal.R.styleable.TextView_imeActionLabel:
819                createEditorIfNeeded();
820                mEditor.createInputContentTypeIfNeeded();
821                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
822                break;
823
824            case com.android.internal.R.styleable.TextView_imeActionId:
825                createEditorIfNeeded();
826                mEditor.createInputContentTypeIfNeeded();
827                mEditor.mInputContentType.imeActionId = a.getInt(attr,
828                        mEditor.mInputContentType.imeActionId);
829                break;
830
831            case com.android.internal.R.styleable.TextView_privateImeOptions:
832                setPrivateImeOptions(a.getString(attr));
833                break;
834
835            case com.android.internal.R.styleable.TextView_editorExtras:
836                try {
837                    setInputExtras(a.getResourceId(attr, 0));
838                } catch (XmlPullParserException e) {
839                    Log.w(LOG_TAG, "Failure reading input extras", e);
840                } catch (IOException e) {
841                    Log.w(LOG_TAG, "Failure reading input extras", e);
842                }
843                break;
844
845            case com.android.internal.R.styleable.TextView_textCursorDrawable:
846                mCursorDrawableRes = a.getResourceId(attr, 0);
847                break;
848
849            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
850                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
851                break;
852
853            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
854                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
855                break;
856
857            case com.android.internal.R.styleable.TextView_textSelectHandle:
858                mTextSelectHandleRes = a.getResourceId(attr, 0);
859                break;
860
861            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
862                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
863                break;
864
865            case com.android.internal.R.styleable.TextView_textIsSelectable:
866                setTextIsSelectable(a.getBoolean(attr, false));
867                break;
868
869            case com.android.internal.R.styleable.TextView_textAllCaps:
870                allCaps = a.getBoolean(attr, false);
871                break;
872            }
873        }
874        a.recycle();
875
876        BufferType bufferType = BufferType.EDITABLE;
877
878        final int variation =
879                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
880        final boolean passwordInputType = variation
881                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
882        final boolean webPasswordInputType = variation
883                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
884        final boolean numberPasswordInputType = variation
885                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
886
887        if (inputMethod != null) {
888            Class<?> c;
889
890            try {
891                c = Class.forName(inputMethod.toString());
892            } catch (ClassNotFoundException ex) {
893                throw new RuntimeException(ex);
894            }
895
896            try {
897                createEditorIfNeeded();
898                mEditor.mKeyListener = (KeyListener) c.newInstance();
899            } catch (InstantiationException ex) {
900                throw new RuntimeException(ex);
901            } catch (IllegalAccessException ex) {
902                throw new RuntimeException(ex);
903            }
904            try {
905                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
906                        ? inputType
907                        : mEditor.mKeyListener.getInputType();
908            } catch (IncompatibleClassChangeError e) {
909                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
910            }
911        } else if (digits != null) {
912            createEditorIfNeeded();
913            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
914            // If no input type was specified, we will default to generic
915            // text, since we can't tell the IME about the set of digits
916            // that was selected.
917            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
918                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
919        } else if (inputType != EditorInfo.TYPE_NULL) {
920            setInputType(inputType, true);
921            // If set, the input type overrides what was set using the deprecated singleLine flag.
922            singleLine = !isMultilineInputType(inputType);
923        } else if (phone) {
924            createEditorIfNeeded();
925            mEditor.mKeyListener = DialerKeyListener.getInstance();
926            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
927        } else if (numeric != 0) {
928            createEditorIfNeeded();
929            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
930                                                   (numeric & DECIMAL) != 0);
931            inputType = EditorInfo.TYPE_CLASS_NUMBER;
932            if ((numeric & SIGNED) != 0) {
933                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
934            }
935            if ((numeric & DECIMAL) != 0) {
936                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
937            }
938            mEditor.mInputType = inputType;
939        } else if (autotext || autocap != -1) {
940            TextKeyListener.Capitalize cap;
941
942            inputType = EditorInfo.TYPE_CLASS_TEXT;
943
944            switch (autocap) {
945            case 1:
946                cap = TextKeyListener.Capitalize.SENTENCES;
947                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
948                break;
949
950            case 2:
951                cap = TextKeyListener.Capitalize.WORDS;
952                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
953                break;
954
955            case 3:
956                cap = TextKeyListener.Capitalize.CHARACTERS;
957                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
958                break;
959
960            default:
961                cap = TextKeyListener.Capitalize.NONE;
962                break;
963            }
964
965            createEditorIfNeeded();
966            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
967            mEditor.mInputType = inputType;
968        } else if (isTextSelectable()) {
969            // Prevent text changes from keyboard.
970            if (mEditor != null) {
971                mEditor.mKeyListener = null;
972                mEditor.mInputType = EditorInfo.TYPE_NULL;
973            }
974            bufferType = BufferType.SPANNABLE;
975            // So that selection can be changed using arrow keys and touch is handled.
976            setMovementMethod(ArrowKeyMovementMethod.getInstance());
977        } else if (editable) {
978            createEditorIfNeeded();
979            mEditor.mKeyListener = TextKeyListener.getInstance();
980            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
981        } else {
982            if (mEditor != null) mEditor.mKeyListener = null;
983
984            switch (buffertype) {
985                case 0:
986                    bufferType = BufferType.NORMAL;
987                    break;
988                case 1:
989                    bufferType = BufferType.SPANNABLE;
990                    break;
991                case 2:
992                    bufferType = BufferType.EDITABLE;
993                    break;
994            }
995        }
996
997        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
998                webPasswordInputType, numberPasswordInputType);
999
1000        if (selectallonfocus) {
1001            createEditorIfNeeded();
1002            mEditor.mSelectAllOnFocus = true;
1003
1004            if (bufferType == BufferType.NORMAL)
1005                bufferType = BufferType.SPANNABLE;
1006        }
1007
1008        setCompoundDrawablesWithIntrinsicBounds(
1009            drawableLeft, drawableTop, drawableRight, drawableBottom);
1010        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1011        setCompoundDrawablePadding(drawablePadding);
1012
1013        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1014        // of lines of height are unchanged for multi-line TextViews.
1015        setInputTypeSingleLine(singleLine);
1016        applySingleLine(singleLine, singleLine, singleLine);
1017
1018        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1019                ellipsize = 3; // END
1020        }
1021
1022        switch (ellipsize) {
1023            case 1:
1024                setEllipsize(TextUtils.TruncateAt.START);
1025                break;
1026            case 2:
1027                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1028                break;
1029            case 3:
1030                setEllipsize(TextUtils.TruncateAt.END);
1031                break;
1032            case 4:
1033                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1034                    setHorizontalFadingEdgeEnabled(true);
1035                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1036                } else {
1037                    setHorizontalFadingEdgeEnabled(false);
1038                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1039                }
1040                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1041                break;
1042        }
1043
1044        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1045        setHintTextColor(textColorHint);
1046        setLinkTextColor(textColorLink);
1047        if (textColorHighlight != 0) {
1048            setHighlightColor(textColorHighlight);
1049        }
1050        setRawTextSize(textSize);
1051
1052        if (allCaps) {
1053            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1054        }
1055
1056        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1057            setTransformationMethod(PasswordTransformationMethod.getInstance());
1058            typefaceIndex = MONOSPACE;
1059        } else if (mEditor != null &&
1060                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1061                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1062            typefaceIndex = MONOSPACE;
1063        }
1064
1065        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1066
1067        if (shadowcolor != 0) {
1068            setShadowLayer(r, dx, dy, shadowcolor);
1069        }
1070
1071        if (maxlength >= 0) {
1072            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1073        } else {
1074            setFilters(NO_FILTERS);
1075        }
1076
1077        setText(text, bufferType);
1078        if (hint != null) setHint(hint);
1079
1080        /*
1081         * Views are not normally focusable unless specified to be.
1082         * However, TextViews that have input or movement methods *are*
1083         * focusable by default.
1084         */
1085        a = context.obtainStyledAttributes(attrs,
1086                                           com.android.internal.R.styleable.View,
1087                                           defStyle, 0);
1088
1089        boolean focusable = mMovement != null || getKeyListener() != null;
1090        boolean clickable = focusable;
1091        boolean longClickable = focusable;
1092
1093        n = a.getIndexCount();
1094        for (int i = 0; i < n; i++) {
1095            int attr = a.getIndex(i);
1096
1097            switch (attr) {
1098            case com.android.internal.R.styleable.View_focusable:
1099                focusable = a.getBoolean(attr, focusable);
1100                break;
1101
1102            case com.android.internal.R.styleable.View_clickable:
1103                clickable = a.getBoolean(attr, clickable);
1104                break;
1105
1106            case com.android.internal.R.styleable.View_longClickable:
1107                longClickable = a.getBoolean(attr, longClickable);
1108                break;
1109            }
1110        }
1111        a.recycle();
1112
1113        setFocusable(focusable);
1114        setClickable(clickable);
1115        setLongClickable(longClickable);
1116
1117        if (mEditor != null) mEditor.prepareCursorControllers();
1118
1119        // If not explicitly specified this view is important for accessibility.
1120        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1121            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1122        }
1123    }
1124
1125    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1126        Typeface tf = null;
1127        if (familyName != null) {
1128            tf = Typeface.create(familyName, styleIndex);
1129            if (tf != null) {
1130                setTypeface(tf);
1131                return;
1132            }
1133        }
1134        switch (typefaceIndex) {
1135            case SANS:
1136                tf = Typeface.SANS_SERIF;
1137                break;
1138
1139            case SERIF:
1140                tf = Typeface.SERIF;
1141                break;
1142
1143            case MONOSPACE:
1144                tf = Typeface.MONOSPACE;
1145                break;
1146        }
1147
1148        setTypeface(tf, styleIndex);
1149    }
1150
1151    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1152        boolean hasRelativeDrawables = (start != null) || (end != null);
1153        if (hasRelativeDrawables) {
1154            Drawables dr = mDrawables;
1155            if (dr == null) {
1156                mDrawables = dr = new Drawables();
1157            }
1158            final Rect compoundRect = dr.mCompoundRect;
1159            int[] state = getDrawableState();
1160            if (start != null) {
1161                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1162                start.setState(state);
1163                start.copyBounds(compoundRect);
1164                start.setCallback(this);
1165
1166                dr.mDrawableStart = start;
1167                dr.mDrawableSizeStart = compoundRect.width();
1168                dr.mDrawableHeightStart = compoundRect.height();
1169            } else {
1170                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1171            }
1172            if (end != null) {
1173                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1174                end.setState(state);
1175                end.copyBounds(compoundRect);
1176                end.setCallback(this);
1177
1178                dr.mDrawableEnd = end;
1179                dr.mDrawableSizeEnd = compoundRect.width();
1180                dr.mDrawableHeightEnd = compoundRect.height();
1181            } else {
1182                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1183            }
1184        }
1185    }
1186
1187    @Override
1188    public void setEnabled(boolean enabled) {
1189        if (enabled == isEnabled()) {
1190            return;
1191        }
1192
1193        if (!enabled) {
1194            // Hide the soft input if the currently active TextView is disabled
1195            InputMethodManager imm = InputMethodManager.peekInstance();
1196            if (imm != null && imm.isActive(this)) {
1197                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1198            }
1199        }
1200
1201        super.setEnabled(enabled);
1202
1203        if (enabled) {
1204            // Make sure IME is updated with current editor info.
1205            InputMethodManager imm = InputMethodManager.peekInstance();
1206            if (imm != null) imm.restartInput(this);
1207        }
1208
1209        // Will change text color
1210        if (mEditor != null) {
1211            mEditor.invalidateTextDisplayList();
1212            mEditor.prepareCursorControllers();
1213
1214            // start or stop the cursor blinking as appropriate
1215            mEditor.makeBlink();
1216        }
1217    }
1218
1219    /**
1220     * Sets the typeface and style in which the text should be displayed,
1221     * and turns on the fake bold and italic bits in the Paint if the
1222     * Typeface that you provided does not have all the bits in the
1223     * style that you specified.
1224     *
1225     * @attr ref android.R.styleable#TextView_typeface
1226     * @attr ref android.R.styleable#TextView_textStyle
1227     */
1228    public void setTypeface(Typeface tf, int style) {
1229        if (style > 0) {
1230            if (tf == null) {
1231                tf = Typeface.defaultFromStyle(style);
1232            } else {
1233                tf = Typeface.create(tf, style);
1234            }
1235
1236            setTypeface(tf);
1237            // now compute what (if any) algorithmic styling is needed
1238            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1239            int need = style & ~typefaceStyle;
1240            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1241            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1242        } else {
1243            mTextPaint.setFakeBoldText(false);
1244            mTextPaint.setTextSkewX(0);
1245            setTypeface(tf);
1246        }
1247    }
1248
1249    /**
1250     * Subclasses override this to specify that they have a KeyListener
1251     * by default even if not specifically called for in the XML options.
1252     */
1253    protected boolean getDefaultEditable() {
1254        return false;
1255    }
1256
1257    /**
1258     * Subclasses override this to specify a default movement method.
1259     */
1260    protected MovementMethod getDefaultMovementMethod() {
1261        return null;
1262    }
1263
1264    /**
1265     * Return the text the TextView is displaying. If setText() was called with
1266     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1267     * the return value from this method to Spannable or Editable, respectively.
1268     *
1269     * Note: The content of the return value should not be modified. If you want
1270     * a modifiable one, you should make your own copy first.
1271     *
1272     * @attr ref android.R.styleable#TextView_text
1273     */
1274    @ViewDebug.CapturedViewProperty
1275    public CharSequence getText() {
1276        return mText;
1277    }
1278
1279    /**
1280     * Returns the length, in characters, of the text managed by this TextView
1281     */
1282    public int length() {
1283        return mText.length();
1284    }
1285
1286    /**
1287     * Return the text the TextView is displaying as an Editable object.  If
1288     * the text is not editable, null is returned.
1289     *
1290     * @see #getText
1291     */
1292    public Editable getEditableText() {
1293        return (mText instanceof Editable) ? (Editable)mText : null;
1294    }
1295
1296    /**
1297     * @return the height of one standard line in pixels.  Note that markup
1298     * within the text can cause individual lines to be taller or shorter
1299     * than this height, and the layout may contain additional first-
1300     * or last-line padding.
1301     */
1302    public int getLineHeight() {
1303        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1304    }
1305
1306    /**
1307     * @return the Layout that is currently being used to display the text.
1308     * This can be null if the text or width has recently changes.
1309     */
1310    public final Layout getLayout() {
1311        return mLayout;
1312    }
1313
1314    /**
1315     * @return the Layout that is currently being used to display the hint text.
1316     * This can be null.
1317     */
1318    final Layout getHintLayout() {
1319        return mHintLayout;
1320    }
1321
1322    /**
1323     * @return the current key listener for this TextView.
1324     * This will frequently be null for non-EditText TextViews.
1325     *
1326     * @attr ref android.R.styleable#TextView_numeric
1327     * @attr ref android.R.styleable#TextView_digits
1328     * @attr ref android.R.styleable#TextView_phoneNumber
1329     * @attr ref android.R.styleable#TextView_inputMethod
1330     * @attr ref android.R.styleable#TextView_capitalize
1331     * @attr ref android.R.styleable#TextView_autoText
1332     */
1333    public final KeyListener getKeyListener() {
1334        return mEditor == null ? null : mEditor.mKeyListener;
1335    }
1336
1337    /**
1338     * Sets the key listener to be used with this TextView.  This can be null
1339     * to disallow user input.  Note that this method has significant and
1340     * subtle interactions with soft keyboards and other input method:
1341     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1342     * for important details.  Calling this method will replace the current
1343     * content type of the text view with the content type returned by the
1344     * key listener.
1345     * <p>
1346     * Be warned that if you want a TextView with a key listener or movement
1347     * method not to be focusable, or if you want a TextView without a
1348     * key listener or movement method to be focusable, you must call
1349     * {@link #setFocusable} again after calling this to get the focusability
1350     * back the way you want it.
1351     *
1352     * @attr ref android.R.styleable#TextView_numeric
1353     * @attr ref android.R.styleable#TextView_digits
1354     * @attr ref android.R.styleable#TextView_phoneNumber
1355     * @attr ref android.R.styleable#TextView_inputMethod
1356     * @attr ref android.R.styleable#TextView_capitalize
1357     * @attr ref android.R.styleable#TextView_autoText
1358     */
1359    public void setKeyListener(KeyListener input) {
1360        setKeyListenerOnly(input);
1361        fixFocusableAndClickableSettings();
1362
1363        if (input != null) {
1364            createEditorIfNeeded();
1365            try {
1366                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1367            } catch (IncompatibleClassChangeError e) {
1368                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1369            }
1370            // Change inputType, without affecting transformation.
1371            // No need to applySingleLine since mSingleLine is unchanged.
1372            setInputTypeSingleLine(mSingleLine);
1373        } else {
1374            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1375        }
1376
1377        InputMethodManager imm = InputMethodManager.peekInstance();
1378        if (imm != null) imm.restartInput(this);
1379    }
1380
1381    private void setKeyListenerOnly(KeyListener input) {
1382        if (mEditor == null && input == null) return; // null is the default value
1383
1384        createEditorIfNeeded();
1385        if (mEditor.mKeyListener != input) {
1386            mEditor.mKeyListener = input;
1387            if (input != null && !(mText instanceof Editable)) {
1388                setText(mText);
1389            }
1390
1391            setFilters((Editable) mText, mFilters);
1392        }
1393    }
1394
1395    /**
1396     * @return the movement method being used for this TextView.
1397     * This will frequently be null for non-EditText TextViews.
1398     */
1399    public final MovementMethod getMovementMethod() {
1400        return mMovement;
1401    }
1402
1403    /**
1404     * Sets the movement method (arrow key handler) to be used for
1405     * this TextView.  This can be null to disallow using the arrow keys
1406     * to move the cursor or scroll the view.
1407     * <p>
1408     * Be warned that if you want a TextView with a key listener or movement
1409     * method not to be focusable, or if you want a TextView without a
1410     * key listener or movement method to be focusable, you must call
1411     * {@link #setFocusable} again after calling this to get the focusability
1412     * back the way you want it.
1413     */
1414    public final void setMovementMethod(MovementMethod movement) {
1415        if (mMovement != movement) {
1416            mMovement = movement;
1417
1418            if (movement != null && !(mText instanceof Spannable)) {
1419                setText(mText);
1420            }
1421
1422            fixFocusableAndClickableSettings();
1423
1424            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1425            // mMovement
1426            if (mEditor != null) mEditor.prepareCursorControllers();
1427        }
1428    }
1429
1430    private void fixFocusableAndClickableSettings() {
1431        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1432            setFocusable(true);
1433            setClickable(true);
1434            setLongClickable(true);
1435        } else {
1436            setFocusable(false);
1437            setClickable(false);
1438            setLongClickable(false);
1439        }
1440    }
1441
1442    /**
1443     * @return the current transformation method for this TextView.
1444     * This will frequently be null except for single-line and password
1445     * fields.
1446     *
1447     * @attr ref android.R.styleable#TextView_password
1448     * @attr ref android.R.styleable#TextView_singleLine
1449     */
1450    public final TransformationMethod getTransformationMethod() {
1451        return mTransformation;
1452    }
1453
1454    /**
1455     * Sets the transformation that is applied to the text that this
1456     * TextView is displaying.
1457     *
1458     * @attr ref android.R.styleable#TextView_password
1459     * @attr ref android.R.styleable#TextView_singleLine
1460     */
1461    public final void setTransformationMethod(TransformationMethod method) {
1462        if (method == mTransformation) {
1463            // Avoid the setText() below if the transformation is
1464            // the same.
1465            return;
1466        }
1467        if (mTransformation != null) {
1468            if (mText instanceof Spannable) {
1469                ((Spannable) mText).removeSpan(mTransformation);
1470            }
1471        }
1472
1473        mTransformation = method;
1474
1475        if (method instanceof TransformationMethod2) {
1476            TransformationMethod2 method2 = (TransformationMethod2) method;
1477            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1478            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1479        } else {
1480            mAllowTransformationLengthChange = false;
1481        }
1482
1483        setText(mText);
1484
1485        if (hasPasswordTransformationMethod()) {
1486            notifyAccessibilityStateChanged();
1487        }
1488    }
1489
1490    /**
1491     * Returns the top padding of the view, plus space for the top
1492     * Drawable if any.
1493     */
1494    public int getCompoundPaddingTop() {
1495        final Drawables dr = mDrawables;
1496        if (dr == null || dr.mDrawableTop == null) {
1497            return mPaddingTop;
1498        } else {
1499            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1500        }
1501    }
1502
1503    /**
1504     * Returns the bottom padding of the view, plus space for the bottom
1505     * Drawable if any.
1506     */
1507    public int getCompoundPaddingBottom() {
1508        final Drawables dr = mDrawables;
1509        if (dr == null || dr.mDrawableBottom == null) {
1510            return mPaddingBottom;
1511        } else {
1512            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1513        }
1514    }
1515
1516    /**
1517     * Returns the left padding of the view, plus space for the left
1518     * Drawable if any.
1519     */
1520    public int getCompoundPaddingLeft() {
1521        final Drawables dr = mDrawables;
1522        if (dr == null || dr.mDrawableLeft == null) {
1523            return mPaddingLeft;
1524        } else {
1525            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1526        }
1527    }
1528
1529    /**
1530     * Returns the right padding of the view, plus space for the right
1531     * Drawable if any.
1532     */
1533    public int getCompoundPaddingRight() {
1534        final Drawables dr = mDrawables;
1535        if (dr == null || dr.mDrawableRight == null) {
1536            return mPaddingRight;
1537        } else {
1538            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1539        }
1540    }
1541
1542    /**
1543     * Returns the start padding of the view, plus space for the start
1544     * Drawable if any.
1545     * @hide
1546     */
1547    public int getCompoundPaddingStart() {
1548        resolveDrawables();
1549        switch(getResolvedLayoutDirection()) {
1550            default:
1551            case LAYOUT_DIRECTION_LTR:
1552                return getCompoundPaddingLeft();
1553            case LAYOUT_DIRECTION_RTL:
1554                return getCompoundPaddingRight();
1555        }
1556    }
1557
1558    /**
1559     * Returns the end padding of the view, plus space for the end
1560     * Drawable if any.
1561     * @hide
1562     */
1563    public int getCompoundPaddingEnd() {
1564        resolveDrawables();
1565        switch(getResolvedLayoutDirection()) {
1566            default:
1567            case LAYOUT_DIRECTION_LTR:
1568                return getCompoundPaddingRight();
1569            case LAYOUT_DIRECTION_RTL:
1570                return getCompoundPaddingLeft();
1571        }
1572    }
1573
1574    /**
1575     * Returns the extended top padding of the view, including both the
1576     * top Drawable if any and any extra space to keep more than maxLines
1577     * of text from showing.  It is only valid to call this after measuring.
1578     */
1579    public int getExtendedPaddingTop() {
1580        if (mMaxMode != LINES) {
1581            return getCompoundPaddingTop();
1582        }
1583
1584        if (mLayout.getLineCount() <= mMaximum) {
1585            return getCompoundPaddingTop();
1586        }
1587
1588        int top = getCompoundPaddingTop();
1589        int bottom = getCompoundPaddingBottom();
1590        int viewht = getHeight() - top - bottom;
1591        int layoutht = mLayout.getLineTop(mMaximum);
1592
1593        if (layoutht >= viewht) {
1594            return top;
1595        }
1596
1597        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1598        if (gravity == Gravity.TOP) {
1599            return top;
1600        } else if (gravity == Gravity.BOTTOM) {
1601            return top + viewht - layoutht;
1602        } else { // (gravity == Gravity.CENTER_VERTICAL)
1603            return top + (viewht - layoutht) / 2;
1604        }
1605    }
1606
1607    /**
1608     * Returns the extended bottom padding of the view, including both the
1609     * bottom Drawable if any and any extra space to keep more than maxLines
1610     * of text from showing.  It is only valid to call this after measuring.
1611     */
1612    public int getExtendedPaddingBottom() {
1613        if (mMaxMode != LINES) {
1614            return getCompoundPaddingBottom();
1615        }
1616
1617        if (mLayout.getLineCount() <= mMaximum) {
1618            return getCompoundPaddingBottom();
1619        }
1620
1621        int top = getCompoundPaddingTop();
1622        int bottom = getCompoundPaddingBottom();
1623        int viewht = getHeight() - top - bottom;
1624        int layoutht = mLayout.getLineTop(mMaximum);
1625
1626        if (layoutht >= viewht) {
1627            return bottom;
1628        }
1629
1630        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1631        if (gravity == Gravity.TOP) {
1632            return bottom + viewht - layoutht;
1633        } else if (gravity == Gravity.BOTTOM) {
1634            return bottom;
1635        } else { // (gravity == Gravity.CENTER_VERTICAL)
1636            return bottom + (viewht - layoutht) / 2;
1637        }
1638    }
1639
1640    /**
1641     * Returns the total left padding of the view, including the left
1642     * Drawable if any.
1643     */
1644    public int getTotalPaddingLeft() {
1645        return getCompoundPaddingLeft();
1646    }
1647
1648    /**
1649     * Returns the total right padding of the view, including the right
1650     * Drawable if any.
1651     */
1652    public int getTotalPaddingRight() {
1653        return getCompoundPaddingRight();
1654    }
1655
1656    /**
1657     * Returns the total start padding of the view, including the start
1658     * Drawable if any.
1659     * @hide
1660     */
1661    public int getTotalPaddingStart() {
1662        return getCompoundPaddingStart();
1663    }
1664
1665    /**
1666     * Returns the total end padding of the view, including the end
1667     * Drawable if any.
1668     * @hide
1669     */
1670    public int getTotalPaddingEnd() {
1671        return getCompoundPaddingEnd();
1672    }
1673
1674    /**
1675     * Returns the total top padding of the view, including the top
1676     * Drawable if any, the extra space to keep more than maxLines
1677     * from showing, and the vertical offset for gravity, if any.
1678     */
1679    public int getTotalPaddingTop() {
1680        return getExtendedPaddingTop() + getVerticalOffset(true);
1681    }
1682
1683    /**
1684     * Returns the total bottom padding of the view, including the bottom
1685     * Drawable if any, the extra space to keep more than maxLines
1686     * from showing, and the vertical offset for gravity, if any.
1687     */
1688    public int getTotalPaddingBottom() {
1689        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1690    }
1691
1692    /**
1693     * Sets the Drawables (if any) to appear to the left of, above,
1694     * to the right of, and below the text.  Use null if you do not
1695     * want a Drawable there.  The Drawables must already have had
1696     * {@link Drawable#setBounds} called.
1697     *
1698     * @attr ref android.R.styleable#TextView_drawableLeft
1699     * @attr ref android.R.styleable#TextView_drawableTop
1700     * @attr ref android.R.styleable#TextView_drawableRight
1701     * @attr ref android.R.styleable#TextView_drawableBottom
1702     */
1703    public void setCompoundDrawables(Drawable left, Drawable top,
1704                                     Drawable right, Drawable bottom) {
1705        Drawables dr = mDrawables;
1706
1707        final boolean drawables = left != null || top != null
1708                || right != null || bottom != null;
1709
1710        if (!drawables) {
1711            // Clearing drawables...  can we free the data structure?
1712            if (dr != null) {
1713                if (dr.mDrawablePadding == 0) {
1714                    mDrawables = null;
1715                } else {
1716                    // We need to retain the last set padding, so just clear
1717                    // out all of the fields in the existing structure.
1718                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
1719                    dr.mDrawableLeft = null;
1720                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1721                    dr.mDrawableTop = null;
1722                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
1723                    dr.mDrawableRight = null;
1724                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1725                    dr.mDrawableBottom = null;
1726                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1727                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1728                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1729                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1730                }
1731            }
1732        } else {
1733            if (dr == null) {
1734                mDrawables = dr = new Drawables();
1735            }
1736
1737            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
1738                dr.mDrawableLeft.setCallback(null);
1739            }
1740            dr.mDrawableLeft = left;
1741
1742            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1743                dr.mDrawableTop.setCallback(null);
1744            }
1745            dr.mDrawableTop = top;
1746
1747            if (dr.mDrawableRight != right && dr.mDrawableRight != null) {
1748                dr.mDrawableRight.setCallback(null);
1749            }
1750            dr.mDrawableRight = right;
1751
1752            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1753                dr.mDrawableBottom.setCallback(null);
1754            }
1755            dr.mDrawableBottom = bottom;
1756
1757            final Rect compoundRect = dr.mCompoundRect;
1758            int[] state;
1759
1760            state = getDrawableState();
1761
1762            if (left != null) {
1763                left.setState(state);
1764                left.copyBounds(compoundRect);
1765                left.setCallback(this);
1766                dr.mDrawableSizeLeft = compoundRect.width();
1767                dr.mDrawableHeightLeft = compoundRect.height();
1768            } else {
1769                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1770            }
1771
1772            if (right != null) {
1773                right.setState(state);
1774                right.copyBounds(compoundRect);
1775                right.setCallback(this);
1776                dr.mDrawableSizeRight = compoundRect.width();
1777                dr.mDrawableHeightRight = compoundRect.height();
1778            } else {
1779                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1780            }
1781
1782            if (top != null) {
1783                top.setState(state);
1784                top.copyBounds(compoundRect);
1785                top.setCallback(this);
1786                dr.mDrawableSizeTop = compoundRect.height();
1787                dr.mDrawableWidthTop = compoundRect.width();
1788            } else {
1789                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1790            }
1791
1792            if (bottom != null) {
1793                bottom.setState(state);
1794                bottom.copyBounds(compoundRect);
1795                bottom.setCallback(this);
1796                dr.mDrawableSizeBottom = compoundRect.height();
1797                dr.mDrawableWidthBottom = compoundRect.width();
1798            } else {
1799                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1800            }
1801        }
1802
1803        invalidate();
1804        requestLayout();
1805    }
1806
1807    /**
1808     * Sets the Drawables (if any) to appear to the left of, above,
1809     * to the right of, and below the text.  Use 0 if you do not
1810     * want a Drawable there. The Drawables' bounds will be set to
1811     * their intrinsic bounds.
1812     *
1813     * @param left Resource identifier of the left Drawable.
1814     * @param top Resource identifier of the top Drawable.
1815     * @param right Resource identifier of the right Drawable.
1816     * @param bottom Resource identifier of the bottom Drawable.
1817     *
1818     * @attr ref android.R.styleable#TextView_drawableLeft
1819     * @attr ref android.R.styleable#TextView_drawableTop
1820     * @attr ref android.R.styleable#TextView_drawableRight
1821     * @attr ref android.R.styleable#TextView_drawableBottom
1822     */
1823    @android.view.RemotableViewMethod
1824    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1825        final Resources resources = getContext().getResources();
1826        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null,
1827                top != 0 ? resources.getDrawable(top) : null,
1828                right != 0 ? resources.getDrawable(right) : null,
1829                bottom != 0 ? resources.getDrawable(bottom) : null);
1830    }
1831
1832    /**
1833     * Sets the Drawables (if any) to appear to the left of, above,
1834     * to the right of, and below the text.  Use null if you do not
1835     * want a Drawable there. The Drawables' bounds will be set to
1836     * their intrinsic bounds.
1837     *
1838     * @attr ref android.R.styleable#TextView_drawableLeft
1839     * @attr ref android.R.styleable#TextView_drawableTop
1840     * @attr ref android.R.styleable#TextView_drawableRight
1841     * @attr ref android.R.styleable#TextView_drawableBottom
1842     */
1843    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1844            Drawable right, Drawable bottom) {
1845
1846        if (left != null) {
1847            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1848        }
1849        if (right != null) {
1850            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1851        }
1852        if (top != null) {
1853            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1854        }
1855        if (bottom != null) {
1856            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
1857        }
1858        setCompoundDrawables(left, top, right, bottom);
1859    }
1860
1861    /**
1862     * Sets the Drawables (if any) to appear to the start of, above,
1863     * to the end of, and below the text.  Use null if you do not
1864     * want a Drawable there.  The Drawables must already have had
1865     * {@link Drawable#setBounds} called.
1866     *
1867     * @attr ref android.R.styleable#TextView_drawableStart
1868     * @attr ref android.R.styleable#TextView_drawableTop
1869     * @attr ref android.R.styleable#TextView_drawableEnd
1870     * @attr ref android.R.styleable#TextView_drawableBottom
1871     * @hide
1872     */
1873    public void setCompoundDrawablesRelative(Drawable start, Drawable top,
1874                                     Drawable end, Drawable bottom) {
1875        Drawables dr = mDrawables;
1876
1877        final boolean drawables = start != null || top != null
1878                || end != null || bottom != null;
1879
1880        if (!drawables) {
1881            // Clearing drawables...  can we free the data structure?
1882            if (dr != null) {
1883                if (dr.mDrawablePadding == 0) {
1884                    mDrawables = null;
1885                } else {
1886                    // We need to retain the last set padding, so just clear
1887                    // out all of the fields in the existing structure.
1888                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
1889                    dr.mDrawableStart = null;
1890                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1891                    dr.mDrawableTop = null;
1892                    if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
1893                    dr.mDrawableEnd = null;
1894                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1895                    dr.mDrawableBottom = null;
1896                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1897                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1898                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1899                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1900                }
1901            }
1902        } else {
1903            if (dr == null) {
1904                mDrawables = dr = new Drawables();
1905            }
1906
1907            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
1908                dr.mDrawableStart.setCallback(null);
1909            }
1910            dr.mDrawableStart = start;
1911
1912            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1913                dr.mDrawableTop.setCallback(null);
1914            }
1915            dr.mDrawableTop = top;
1916
1917            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
1918                dr.mDrawableEnd.setCallback(null);
1919            }
1920            dr.mDrawableEnd = end;
1921
1922            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1923                dr.mDrawableBottom.setCallback(null);
1924            }
1925            dr.mDrawableBottom = bottom;
1926
1927            final Rect compoundRect = dr.mCompoundRect;
1928            int[] state;
1929
1930            state = getDrawableState();
1931
1932            if (start != null) {
1933                start.setState(state);
1934                start.copyBounds(compoundRect);
1935                start.setCallback(this);
1936                dr.mDrawableSizeStart = compoundRect.width();
1937                dr.mDrawableHeightStart = compoundRect.height();
1938            } else {
1939                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1940            }
1941
1942            if (end != null) {
1943                end.setState(state);
1944                end.copyBounds(compoundRect);
1945                end.setCallback(this);
1946                dr.mDrawableSizeEnd = compoundRect.width();
1947                dr.mDrawableHeightEnd = compoundRect.height();
1948            } else {
1949                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1950            }
1951
1952            if (top != null) {
1953                top.setState(state);
1954                top.copyBounds(compoundRect);
1955                top.setCallback(this);
1956                dr.mDrawableSizeTop = compoundRect.height();
1957                dr.mDrawableWidthTop = compoundRect.width();
1958            } else {
1959                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1960            }
1961
1962            if (bottom != null) {
1963                bottom.setState(state);
1964                bottom.copyBounds(compoundRect);
1965                bottom.setCallback(this);
1966                dr.mDrawableSizeBottom = compoundRect.height();
1967                dr.mDrawableWidthBottom = compoundRect.width();
1968            } else {
1969                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1970            }
1971        }
1972
1973        resolveDrawables();
1974        invalidate();
1975        requestLayout();
1976    }
1977
1978    /**
1979     * Sets the Drawables (if any) to appear to the start of, above,
1980     * to the end of, and below the text.  Use 0 if you do not
1981     * want a Drawable there. The Drawables' bounds will be set to
1982     * their intrinsic bounds.
1983     *
1984     * @param start Resource identifier of the start Drawable.
1985     * @param top Resource identifier of the top Drawable.
1986     * @param end Resource identifier of the end Drawable.
1987     * @param bottom Resource identifier of the bottom Drawable.
1988     *
1989     * @attr ref android.R.styleable#TextView_drawableStart
1990     * @attr ref android.R.styleable#TextView_drawableTop
1991     * @attr ref android.R.styleable#TextView_drawableEnd
1992     * @attr ref android.R.styleable#TextView_drawableBottom
1993     * @hide
1994     */
1995    @android.view.RemotableViewMethod
1996    public void setCompoundDrawablesRelativeWithIntrinsicBounds(int start, int top, int end,
1997            int bottom) {
1998        resetResolvedDrawables();
1999        final Resources resources = getContext().getResources();
2000        setCompoundDrawablesRelativeWithIntrinsicBounds(
2001                start != 0 ? resources.getDrawable(start) : null,
2002                top != 0 ? resources.getDrawable(top) : null,
2003                end != 0 ? resources.getDrawable(end) : null,
2004                bottom != 0 ? resources.getDrawable(bottom) : null);
2005    }
2006
2007    /**
2008     * Sets the Drawables (if any) to appear to the start of, above,
2009     * to the end of, and below the text.  Use null if you do not
2010     * want a Drawable there. The Drawables' bounds will be set to
2011     * their intrinsic bounds.
2012     *
2013     * @attr ref android.R.styleable#TextView_drawableStart
2014     * @attr ref android.R.styleable#TextView_drawableTop
2015     * @attr ref android.R.styleable#TextView_drawableEnd
2016     * @attr ref android.R.styleable#TextView_drawableBottom
2017     * @hide
2018     */
2019    public void setCompoundDrawablesRelativeWithIntrinsicBounds(Drawable start, Drawable top,
2020            Drawable end, Drawable bottom) {
2021
2022        resetResolvedDrawables();
2023        if (start != null) {
2024            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2025        }
2026        if (end != null) {
2027            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2028        }
2029        if (top != null) {
2030            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2031        }
2032        if (bottom != null) {
2033            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2034        }
2035        setCompoundDrawablesRelative(start, top, end, bottom);
2036    }
2037
2038    /**
2039     * Returns drawables for the left, top, right, and bottom borders.
2040     *
2041     * @attr ref android.R.styleable#TextView_drawableLeft
2042     * @attr ref android.R.styleable#TextView_drawableTop
2043     * @attr ref android.R.styleable#TextView_drawableRight
2044     * @attr ref android.R.styleable#TextView_drawableBottom
2045     */
2046    public Drawable[] getCompoundDrawables() {
2047        final Drawables dr = mDrawables;
2048        if (dr != null) {
2049            return new Drawable[] {
2050                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
2051            };
2052        } else {
2053            return new Drawable[] { null, null, null, null };
2054        }
2055    }
2056
2057    /**
2058     * Returns drawables for the start, top, end, and bottom borders.
2059     *
2060     * @attr ref android.R.styleable#TextView_drawableStart
2061     * @attr ref android.R.styleable#TextView_drawableTop
2062     * @attr ref android.R.styleable#TextView_drawableEnd
2063     * @attr ref android.R.styleable#TextView_drawableBottom
2064     * @hide
2065     */
2066    public Drawable[] getCompoundDrawablesRelative() {
2067        final Drawables dr = mDrawables;
2068        if (dr != null) {
2069            return new Drawable[] {
2070                dr.mDrawableStart, dr.mDrawableTop, dr.mDrawableEnd, dr.mDrawableBottom
2071            };
2072        } else {
2073            return new Drawable[] { null, null, null, null };
2074        }
2075    }
2076
2077    /**
2078     * Sets the size of the padding between the compound drawables and
2079     * the text.
2080     *
2081     * @attr ref android.R.styleable#TextView_drawablePadding
2082     */
2083    @android.view.RemotableViewMethod
2084    public void setCompoundDrawablePadding(int pad) {
2085        Drawables dr = mDrawables;
2086        if (pad == 0) {
2087            if (dr != null) {
2088                dr.mDrawablePadding = pad;
2089            }
2090        } else {
2091            if (dr == null) {
2092                mDrawables = dr = new Drawables();
2093            }
2094            dr.mDrawablePadding = pad;
2095        }
2096
2097        invalidate();
2098        requestLayout();
2099    }
2100
2101    /**
2102     * Returns the padding between the compound drawables and the text.
2103     *
2104     * @attr ref android.R.styleable#TextView_drawablePadding
2105     */
2106    public int getCompoundDrawablePadding() {
2107        final Drawables dr = mDrawables;
2108        return dr != null ? dr.mDrawablePadding : 0;
2109    }
2110
2111    @Override
2112    public void setPadding(int left, int top, int right, int bottom) {
2113        if (left != mPaddingLeft ||
2114            right != mPaddingRight ||
2115            top != mPaddingTop ||
2116            bottom != mPaddingBottom) {
2117            nullLayouts();
2118        }
2119
2120        // the super call will requestLayout()
2121        super.setPadding(left, top, right, bottom);
2122        invalidate();
2123    }
2124
2125    @Override
2126    public void setPaddingRelative(int start, int top, int end, int bottom) {
2127        if (start != getPaddingStart() ||
2128            end != getPaddingEnd() ||
2129            top != mPaddingTop ||
2130            bottom != mPaddingBottom) {
2131            nullLayouts();
2132        }
2133
2134        // the super call will requestLayout()
2135        super.setPaddingRelative(start, top, end, bottom);
2136        invalidate();
2137    }
2138
2139    /**
2140     * Gets the autolink mask of the text.  See {@link
2141     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2142     * possible values.
2143     *
2144     * @attr ref android.R.styleable#TextView_autoLink
2145     */
2146    public final int getAutoLinkMask() {
2147        return mAutoLinkMask;
2148    }
2149
2150    /**
2151     * Sets the text color, size, style, hint color, and highlight color
2152     * from the specified TextAppearance resource.
2153     */
2154    public void setTextAppearance(Context context, int resid) {
2155        TypedArray appearance =
2156            context.obtainStyledAttributes(resid,
2157                                           com.android.internal.R.styleable.TextAppearance);
2158
2159        int color;
2160        ColorStateList colors;
2161        int ts;
2162
2163        color = appearance.getColor(
2164                com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
2165        if (color != 0) {
2166            setHighlightColor(color);
2167        }
2168
2169        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2170                                              TextAppearance_textColor);
2171        if (colors != null) {
2172            setTextColor(colors);
2173        }
2174
2175        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
2176                                              TextAppearance_textSize, 0);
2177        if (ts != 0) {
2178            setRawTextSize(ts);
2179        }
2180
2181        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2182                                              TextAppearance_textColorHint);
2183        if (colors != null) {
2184            setHintTextColor(colors);
2185        }
2186
2187        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2188                                              TextAppearance_textColorLink);
2189        if (colors != null) {
2190            setLinkTextColor(colors);
2191        }
2192
2193        String familyName;
2194        int typefaceIndex, styleIndex;
2195
2196        familyName = appearance.getString(com.android.internal.R.styleable.
2197                                          TextAppearance_fontFamily);
2198        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
2199                                          TextAppearance_typeface, -1);
2200        styleIndex = appearance.getInt(com.android.internal.R.styleable.
2201                                       TextAppearance_textStyle, -1);
2202
2203        setTypefaceFromAttrs(familyName, typefaceIndex, styleIndex);
2204
2205        if (appearance.getBoolean(com.android.internal.R.styleable.TextAppearance_textAllCaps,
2206                false)) {
2207            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2208        }
2209
2210        appearance.recycle();
2211    }
2212
2213    /**
2214     * @return the size (in pixels) of the default text size in this TextView.
2215     */
2216    @ViewDebug.ExportedProperty(category = "text")
2217    public float getTextSize() {
2218        return mTextPaint.getTextSize();
2219    }
2220
2221    /**
2222     * Set the default text size to the given value, interpreted as "scaled
2223     * pixel" units.  This size is adjusted based on the current density and
2224     * user font size preference.
2225     *
2226     * @param size The scaled pixel size.
2227     *
2228     * @attr ref android.R.styleable#TextView_textSize
2229     */
2230    @android.view.RemotableViewMethod
2231    public void setTextSize(float size) {
2232        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2233    }
2234
2235    /**
2236     * Set the default text size to a given unit and value.  See {@link
2237     * TypedValue} for the possible dimension units.
2238     *
2239     * @param unit The desired dimension unit.
2240     * @param size The desired size in the given units.
2241     *
2242     * @attr ref android.R.styleable#TextView_textSize
2243     */
2244    public void setTextSize(int unit, float size) {
2245        Context c = getContext();
2246        Resources r;
2247
2248        if (c == null)
2249            r = Resources.getSystem();
2250        else
2251            r = c.getResources();
2252
2253        setRawTextSize(TypedValue.applyDimension(
2254            unit, size, r.getDisplayMetrics()));
2255    }
2256
2257    private void setRawTextSize(float size) {
2258        if (size != mTextPaint.getTextSize()) {
2259            mTextPaint.setTextSize(size);
2260
2261            if (mLayout != null) {
2262                nullLayouts();
2263                requestLayout();
2264                invalidate();
2265            }
2266        }
2267    }
2268
2269    /**
2270     * @return the extent by which text is currently being stretched
2271     * horizontally.  This will usually be 1.
2272     */
2273    public float getTextScaleX() {
2274        return mTextPaint.getTextScaleX();
2275    }
2276
2277    /**
2278     * Sets the extent by which text should be stretched horizontally.
2279     *
2280     * @attr ref android.R.styleable#TextView_textScaleX
2281     */
2282    @android.view.RemotableViewMethod
2283    public void setTextScaleX(float size) {
2284        if (size != mTextPaint.getTextScaleX()) {
2285            mUserSetTextScaleX = true;
2286            mTextPaint.setTextScaleX(size);
2287
2288            if (mLayout != null) {
2289                nullLayouts();
2290                requestLayout();
2291                invalidate();
2292            }
2293        }
2294    }
2295
2296    /**
2297     * Sets the typeface and style in which the text should be displayed.
2298     * Note that not all Typeface families actually have bold and italic
2299     * variants, so you may need to use
2300     * {@link #setTypeface(Typeface, int)} to get the appearance
2301     * that you actually want.
2302     *
2303     * @see #getTypeface()
2304     *
2305     * @attr ref android.R.styleable#TextView_fontFamily
2306     * @attr ref android.R.styleable#TextView_typeface
2307     * @attr ref android.R.styleable#TextView_textStyle
2308     */
2309    public void setTypeface(Typeface tf) {
2310        if (mTextPaint.getTypeface() != tf) {
2311            mTextPaint.setTypeface(tf);
2312
2313            if (mLayout != null) {
2314                nullLayouts();
2315                requestLayout();
2316                invalidate();
2317            }
2318        }
2319    }
2320
2321    /**
2322     * @return the current typeface and style in which the text is being
2323     * displayed.
2324     *
2325     * @see #setTypeface(Typeface)
2326     *
2327     * @attr ref android.R.styleable#TextView_fontFamily
2328     * @attr ref android.R.styleable#TextView_typeface
2329     * @attr ref android.R.styleable#TextView_textStyle
2330     */
2331    public Typeface getTypeface() {
2332        return mTextPaint.getTypeface();
2333    }
2334
2335    /**
2336     * Sets the text color for all the states (normal, selected,
2337     * focused) to be this color.
2338     *
2339     * @see #setTextColor(ColorStateList)
2340     * @see #getTextColors()
2341     *
2342     * @attr ref android.R.styleable#TextView_textColor
2343     */
2344    @android.view.RemotableViewMethod
2345    public void setTextColor(int color) {
2346        mTextColor = ColorStateList.valueOf(color);
2347        updateTextColors();
2348    }
2349
2350    /**
2351     * Sets the text color.
2352     *
2353     * @see #setTextColor(int)
2354     * @see #getTextColors()
2355     * @see #setHintTextColor(ColorStateList)
2356     * @see #setLinkTextColor(ColorStateList)
2357     *
2358     * @attr ref android.R.styleable#TextView_textColor
2359     */
2360    public void setTextColor(ColorStateList colors) {
2361        if (colors == null) {
2362            throw new NullPointerException();
2363        }
2364
2365        mTextColor = colors;
2366        updateTextColors();
2367    }
2368
2369    /**
2370     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
2371     *
2372     * @see #setTextColor(ColorStateList)
2373     * @see #setTextColor(int)
2374     *
2375     * @attr ref android.R.styleable#TextView_textColor
2376     */
2377    public final ColorStateList getTextColors() {
2378        return mTextColor;
2379    }
2380
2381    /**
2382     * <p>Return the current color selected for normal text.</p>
2383     *
2384     * @return Returns the current text color.
2385     */
2386    public final int getCurrentTextColor() {
2387        return mCurTextColor;
2388    }
2389
2390    /**
2391     * Sets the color used to display the selection highlight.
2392     *
2393     * @attr ref android.R.styleable#TextView_textColorHighlight
2394     */
2395    @android.view.RemotableViewMethod
2396    public void setHighlightColor(int color) {
2397        if (mHighlightColor != color) {
2398            mHighlightColor = color;
2399            invalidate();
2400        }
2401    }
2402
2403    /**
2404     * @return the color used to display the selection highlight
2405     *
2406     * @see #setHighlightColor(int)
2407     *
2408     * @attr ref android.R.styleable#TextView_textColorHighlight
2409     */
2410    public int getHighlightColor() {
2411        return mHighlightColor;
2412    }
2413
2414    /**
2415     * Sets whether the soft input method will be made visible when this
2416     * TextView gets focused. The default is true.
2417     * @hide
2418     */
2419    @android.view.RemotableViewMethod
2420    public final void setShowSoftInputOnFocus(boolean show) {
2421        createEditorIfNeeded();
2422        mEditor.mShowSoftInputOnFocus = show;
2423    }
2424
2425    /**
2426     * Returns whether the soft input method will be made visible when this
2427     * TextView gets focused. The default is true.
2428     * @hide
2429     */
2430    public final boolean getShowSoftInputOnFocus() {
2431        // When there is no Editor, return default true value
2432        return mEditor == null || mEditor.mShowSoftInputOnFocus;
2433    }
2434
2435    /**
2436     * Gives the text a shadow of the specified radius and color, the specified
2437     * distance from its normal position.
2438     *
2439     * @attr ref android.R.styleable#TextView_shadowColor
2440     * @attr ref android.R.styleable#TextView_shadowDx
2441     * @attr ref android.R.styleable#TextView_shadowDy
2442     * @attr ref android.R.styleable#TextView_shadowRadius
2443     */
2444    public void setShadowLayer(float radius, float dx, float dy, int color) {
2445        mTextPaint.setShadowLayer(radius, dx, dy, color);
2446
2447        mShadowRadius = radius;
2448        mShadowDx = dx;
2449        mShadowDy = dy;
2450
2451        // Will change text clip region
2452        if (mEditor != null) mEditor.invalidateTextDisplayList();
2453        invalidate();
2454    }
2455
2456    /**
2457     * Gets the radius of the shadow layer.
2458     *
2459     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
2460     *
2461     * @see #setShadowLayer(float, float, float, int)
2462     *
2463     * @attr ref android.R.styleable#TextView_shadowRadius
2464     */
2465    public float getShadowRadius() {
2466        return mShadowRadius;
2467    }
2468
2469    /**
2470     * @return the horizontal offset of the shadow layer
2471     *
2472     * @see #setShadowLayer(float, float, float, int)
2473     *
2474     * @attr ref android.R.styleable#TextView_shadowDx
2475     */
2476    public float getShadowDx() {
2477        return mShadowDx;
2478    }
2479
2480    /**
2481     * @return the vertical offset of the shadow layer
2482     *
2483     * @see #setShadowLayer(float, float, float, int)
2484     *
2485     * @attr ref android.R.styleable#TextView_shadowDy
2486     */
2487    public float getShadowDy() {
2488        return mShadowDy;
2489    }
2490
2491    /**
2492     * @return the color of the shadow layer
2493     *
2494     * @see #setShadowLayer(float, float, float, int)
2495     *
2496     * @attr ref android.R.styleable#TextView_shadowColor
2497     */
2498    public int getShadowColor() {
2499        return mTextPaint.shadowColor;
2500    }
2501
2502    /**
2503     * @return the base paint used for the text.  Please use this only to
2504     * consult the Paint's properties and not to change them.
2505     */
2506    public TextPaint getPaint() {
2507        return mTextPaint;
2508    }
2509
2510    /**
2511     * Sets the autolink mask of the text.  See {@link
2512     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2513     * possible values.
2514     *
2515     * @attr ref android.R.styleable#TextView_autoLink
2516     */
2517    @android.view.RemotableViewMethod
2518    public final void setAutoLinkMask(int mask) {
2519        mAutoLinkMask = mask;
2520    }
2521
2522    /**
2523     * Sets whether the movement method will automatically be set to
2524     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2525     * set to nonzero and links are detected in {@link #setText}.
2526     * The default is true.
2527     *
2528     * @attr ref android.R.styleable#TextView_linksClickable
2529     */
2530    @android.view.RemotableViewMethod
2531    public final void setLinksClickable(boolean whether) {
2532        mLinksClickable = whether;
2533    }
2534
2535    /**
2536     * Returns whether the movement method will automatically be set to
2537     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2538     * set to nonzero and links are detected in {@link #setText}.
2539     * The default is true.
2540     *
2541     * @attr ref android.R.styleable#TextView_linksClickable
2542     */
2543    public final boolean getLinksClickable() {
2544        return mLinksClickable;
2545    }
2546
2547    /**
2548     * Returns the list of URLSpans attached to the text
2549     * (by {@link Linkify} or otherwise) if any.  You can call
2550     * {@link URLSpan#getURL} on them to find where they link to
2551     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
2552     * to find the region of the text they are attached to.
2553     */
2554    public URLSpan[] getUrls() {
2555        if (mText instanceof Spanned) {
2556            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
2557        } else {
2558            return new URLSpan[0];
2559        }
2560    }
2561
2562    /**
2563     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
2564     * TextView.
2565     *
2566     * @see #setHintTextColor(ColorStateList)
2567     * @see #getHintTextColors()
2568     * @see #setTextColor(int)
2569     *
2570     * @attr ref android.R.styleable#TextView_textColorHint
2571     */
2572    @android.view.RemotableViewMethod
2573    public final void setHintTextColor(int color) {
2574        mHintTextColor = ColorStateList.valueOf(color);
2575        updateTextColors();
2576    }
2577
2578    /**
2579     * Sets the color of the hint text.
2580     *
2581     * @see #getHintTextColors()
2582     * @see #setHintTextColor(int)
2583     * @see #setTextColor(ColorStateList)
2584     * @see #setLinkTextColor(ColorStateList)
2585     *
2586     * @attr ref android.R.styleable#TextView_textColorHint
2587     */
2588    public final void setHintTextColor(ColorStateList colors) {
2589        mHintTextColor = colors;
2590        updateTextColors();
2591    }
2592
2593    /**
2594     * @return the color of the hint text, for the different states of this TextView.
2595     *
2596     * @see #setHintTextColor(ColorStateList)
2597     * @see #setHintTextColor(int)
2598     * @see #setTextColor(ColorStateList)
2599     * @see #setLinkTextColor(ColorStateList)
2600     *
2601     * @attr ref android.R.styleable#TextView_textColorHint
2602     */
2603    public final ColorStateList getHintTextColors() {
2604        return mHintTextColor;
2605    }
2606
2607    /**
2608     * <p>Return the current color selected to paint the hint text.</p>
2609     *
2610     * @return Returns the current hint text color.
2611     */
2612    public final int getCurrentHintTextColor() {
2613        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
2614    }
2615
2616    /**
2617     * Sets the color of links in the text.
2618     *
2619     * @see #setLinkTextColor(ColorStateList)
2620     * @see #getLinkTextColors()
2621     *
2622     * @attr ref android.R.styleable#TextView_textColorLink
2623     */
2624    @android.view.RemotableViewMethod
2625    public final void setLinkTextColor(int color) {
2626        mLinkTextColor = ColorStateList.valueOf(color);
2627        updateTextColors();
2628    }
2629
2630    /**
2631     * Sets the color of links in the text.
2632     *
2633     * @see #setLinkTextColor(int)
2634     * @see #getLinkTextColors()
2635     * @see #setTextColor(ColorStateList)
2636     * @see #setHintTextColor(ColorStateList)
2637     *
2638     * @attr ref android.R.styleable#TextView_textColorLink
2639     */
2640    public final void setLinkTextColor(ColorStateList colors) {
2641        mLinkTextColor = colors;
2642        updateTextColors();
2643    }
2644
2645    /**
2646     * @return the list of colors used to paint the links in the text, for the different states of
2647     * this TextView
2648     *
2649     * @see #setLinkTextColor(ColorStateList)
2650     * @see #setLinkTextColor(int)
2651     *
2652     * @attr ref android.R.styleable#TextView_textColorLink
2653     */
2654    public final ColorStateList getLinkTextColors() {
2655        return mLinkTextColor;
2656    }
2657
2658    /**
2659     * Sets the horizontal alignment of the text and the
2660     * vertical gravity that will be used when there is extra space
2661     * in the TextView beyond what is required for the text itself.
2662     *
2663     * @see android.view.Gravity
2664     * @attr ref android.R.styleable#TextView_gravity
2665     */
2666    public void setGravity(int gravity) {
2667        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
2668            gravity |= Gravity.START;
2669        }
2670        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
2671            gravity |= Gravity.TOP;
2672        }
2673
2674        boolean newLayout = false;
2675
2676        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
2677            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
2678            newLayout = true;
2679        }
2680
2681        if (gravity != mGravity) {
2682            invalidate();
2683            mLayoutAlignment = null;
2684        }
2685
2686        mGravity = gravity;
2687
2688        if (mLayout != null && newLayout) {
2689            // XXX this is heavy-handed because no actual content changes.
2690            int want = mLayout.getWidth();
2691            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
2692
2693            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
2694                          mRight - mLeft - getCompoundPaddingLeft() -
2695                          getCompoundPaddingRight(), true);
2696        }
2697    }
2698
2699    /**
2700     * Returns the horizontal and vertical alignment of this TextView.
2701     *
2702     * @see android.view.Gravity
2703     * @attr ref android.R.styleable#TextView_gravity
2704     */
2705    public int getGravity() {
2706        return mGravity;
2707    }
2708
2709    /**
2710     * @return the flags on the Paint being used to display the text.
2711     * @see Paint#getFlags
2712     */
2713    public int getPaintFlags() {
2714        return mTextPaint.getFlags();
2715    }
2716
2717    /**
2718     * Sets flags on the Paint being used to display the text and
2719     * reflows the text if they are different from the old flags.
2720     * @see Paint#setFlags
2721     */
2722    @android.view.RemotableViewMethod
2723    public void setPaintFlags(int flags) {
2724        if (mTextPaint.getFlags() != flags) {
2725            mTextPaint.setFlags(flags);
2726
2727            if (mLayout != null) {
2728                nullLayouts();
2729                requestLayout();
2730                invalidate();
2731            }
2732        }
2733    }
2734
2735    /**
2736     * Sets whether the text should be allowed to be wider than the
2737     * View is.  If false, it will be wrapped to the width of the View.
2738     *
2739     * @attr ref android.R.styleable#TextView_scrollHorizontally
2740     */
2741    public void setHorizontallyScrolling(boolean whether) {
2742        if (mHorizontallyScrolling != whether) {
2743            mHorizontallyScrolling = whether;
2744
2745            if (mLayout != null) {
2746                nullLayouts();
2747                requestLayout();
2748                invalidate();
2749            }
2750        }
2751    }
2752
2753    /**
2754     * Returns whether the text is allowed to be wider than the View is.
2755     * If false, the text will be wrapped to the width of the View.
2756     *
2757     * @attr ref android.R.styleable#TextView_scrollHorizontally
2758     * @hide
2759     */
2760    public boolean getHorizontallyScrolling() {
2761        return mHorizontallyScrolling;
2762    }
2763
2764    /**
2765     * Makes the TextView at least this many lines tall.
2766     *
2767     * Setting this value overrides any other (minimum) height setting. A single line TextView will
2768     * set this value to 1.
2769     *
2770     * @see #getMinLines()
2771     *
2772     * @attr ref android.R.styleable#TextView_minLines
2773     */
2774    @android.view.RemotableViewMethod
2775    public void setMinLines(int minlines) {
2776        mMinimum = minlines;
2777        mMinMode = LINES;
2778
2779        requestLayout();
2780        invalidate();
2781    }
2782
2783    /**
2784     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
2785     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
2786     *
2787     * @see #setMinLines(int)
2788     *
2789     * @attr ref android.R.styleable#TextView_minLines
2790     */
2791    public int getMinLines() {
2792        return mMinMode == LINES ? mMinimum : -1;
2793    }
2794
2795    /**
2796     * Makes the TextView at least this many pixels tall.
2797     *
2798     * Setting this value overrides any other (minimum) number of lines setting.
2799     *
2800     * @attr ref android.R.styleable#TextView_minHeight
2801     */
2802    @android.view.RemotableViewMethod
2803    public void setMinHeight(int minHeight) {
2804        mMinimum = minHeight;
2805        mMinMode = PIXELS;
2806
2807        requestLayout();
2808        invalidate();
2809    }
2810
2811    /**
2812     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
2813     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
2814     *
2815     * @see #setMinHeight(int)
2816     *
2817     * @attr ref android.R.styleable#TextView_minHeight
2818     */
2819    public int getMinHeight() {
2820        return mMinMode == PIXELS ? mMinimum : -1;
2821    }
2822
2823    /**
2824     * Makes the TextView at most this many lines tall.
2825     *
2826     * Setting this value overrides any other (maximum) height setting.
2827     *
2828     * @attr ref android.R.styleable#TextView_maxLines
2829     */
2830    @android.view.RemotableViewMethod
2831    public void setMaxLines(int maxlines) {
2832        mMaximum = maxlines;
2833        mMaxMode = LINES;
2834
2835        requestLayout();
2836        invalidate();
2837    }
2838
2839    /**
2840     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
2841     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
2842     *
2843     * @see #setMaxLines(int)
2844     *
2845     * @attr ref android.R.styleable#TextView_maxLines
2846     */
2847    public int getMaxLines() {
2848        return mMaxMode == LINES ? mMaximum : -1;
2849    }
2850
2851    /**
2852     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
2853     * {@link #setMaxLines(int)} method.
2854     *
2855     * Setting this value overrides any other (maximum) number of lines setting.
2856     *
2857     * @attr ref android.R.styleable#TextView_maxHeight
2858     */
2859    @android.view.RemotableViewMethod
2860    public void setMaxHeight(int maxHeight) {
2861        mMaximum = maxHeight;
2862        mMaxMode = PIXELS;
2863
2864        requestLayout();
2865        invalidate();
2866    }
2867
2868    /**
2869     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
2870     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
2871     *
2872     * @see #setMaxHeight(int)
2873     *
2874     * @attr ref android.R.styleable#TextView_maxHeight
2875     */
2876    public int getMaxHeight() {
2877        return mMaxMode == PIXELS ? mMaximum : -1;
2878    }
2879
2880    /**
2881     * Makes the TextView exactly this many lines tall.
2882     *
2883     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2884     * height setting. A single line TextView will set this value to 1.
2885     *
2886     * @attr ref android.R.styleable#TextView_lines
2887     */
2888    @android.view.RemotableViewMethod
2889    public void setLines(int lines) {
2890        mMaximum = mMinimum = lines;
2891        mMaxMode = mMinMode = LINES;
2892
2893        requestLayout();
2894        invalidate();
2895    }
2896
2897    /**
2898     * Makes the TextView exactly this many pixels tall.
2899     * You could do the same thing by specifying this number in the
2900     * LayoutParams.
2901     *
2902     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2903     * height setting.
2904     *
2905     * @attr ref android.R.styleable#TextView_height
2906     */
2907    @android.view.RemotableViewMethod
2908    public void setHeight(int pixels) {
2909        mMaximum = mMinimum = pixels;
2910        mMaxMode = mMinMode = PIXELS;
2911
2912        requestLayout();
2913        invalidate();
2914    }
2915
2916    /**
2917     * Makes the TextView at least this many ems wide
2918     *
2919     * @attr ref android.R.styleable#TextView_minEms
2920     */
2921    @android.view.RemotableViewMethod
2922    public void setMinEms(int minems) {
2923        mMinWidth = minems;
2924        mMinWidthMode = EMS;
2925
2926        requestLayout();
2927        invalidate();
2928    }
2929
2930    /**
2931     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
2932     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
2933     *
2934     * @see #setMinEms(int)
2935     * @see #setEms(int)
2936     *
2937     * @attr ref android.R.styleable#TextView_minEms
2938     */
2939    public int getMinEms() {
2940        return mMinWidthMode == EMS ? mMinWidth : -1;
2941    }
2942
2943    /**
2944     * Makes the TextView at least this many pixels wide
2945     *
2946     * @attr ref android.R.styleable#TextView_minWidth
2947     */
2948    @android.view.RemotableViewMethod
2949    public void setMinWidth(int minpixels) {
2950        mMinWidth = minpixels;
2951        mMinWidthMode = PIXELS;
2952
2953        requestLayout();
2954        invalidate();
2955    }
2956
2957    /**
2958     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
2959     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
2960     *
2961     * @see #setMinWidth(int)
2962     * @see #setWidth(int)
2963     *
2964     * @attr ref android.R.styleable#TextView_minWidth
2965     */
2966    public int getMinWidth() {
2967        return mMinWidthMode == PIXELS ? mMinWidth : -1;
2968    }
2969
2970    /**
2971     * Makes the TextView at most this many ems wide
2972     *
2973     * @attr ref android.R.styleable#TextView_maxEms
2974     */
2975    @android.view.RemotableViewMethod
2976    public void setMaxEms(int maxems) {
2977        mMaxWidth = maxems;
2978        mMaxWidthMode = EMS;
2979
2980        requestLayout();
2981        invalidate();
2982    }
2983
2984    /**
2985     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
2986     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
2987     *
2988     * @see #setMaxEms(int)
2989     * @see #setEms(int)
2990     *
2991     * @attr ref android.R.styleable#TextView_maxEms
2992     */
2993    public int getMaxEms() {
2994        return mMaxWidthMode == EMS ? mMaxWidth : -1;
2995    }
2996
2997    /**
2998     * Makes the TextView at most this many pixels wide
2999     *
3000     * @attr ref android.R.styleable#TextView_maxWidth
3001     */
3002    @android.view.RemotableViewMethod
3003    public void setMaxWidth(int maxpixels) {
3004        mMaxWidth = maxpixels;
3005        mMaxWidthMode = PIXELS;
3006
3007        requestLayout();
3008        invalidate();
3009    }
3010
3011    /**
3012     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3013     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3014     *
3015     * @see #setMaxWidth(int)
3016     * @see #setWidth(int)
3017     *
3018     * @attr ref android.R.styleable#TextView_maxWidth
3019     */
3020    public int getMaxWidth() {
3021        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3022    }
3023
3024    /**
3025     * Makes the TextView exactly this many ems wide
3026     *
3027     * @see #setMaxEms(int)
3028     * @see #setMinEms(int)
3029     * @see #getMinEms()
3030     * @see #getMaxEms()
3031     *
3032     * @attr ref android.R.styleable#TextView_ems
3033     */
3034    @android.view.RemotableViewMethod
3035    public void setEms(int ems) {
3036        mMaxWidth = mMinWidth = ems;
3037        mMaxWidthMode = mMinWidthMode = EMS;
3038
3039        requestLayout();
3040        invalidate();
3041    }
3042
3043    /**
3044     * Makes the TextView exactly this many pixels wide.
3045     * You could do the same thing by specifying this number in the
3046     * LayoutParams.
3047     *
3048     * @see #setMaxWidth(int)
3049     * @see #setMinWidth(int)
3050     * @see #getMinWidth()
3051     * @see #getMaxWidth()
3052     *
3053     * @attr ref android.R.styleable#TextView_width
3054     */
3055    @android.view.RemotableViewMethod
3056    public void setWidth(int pixels) {
3057        mMaxWidth = mMinWidth = pixels;
3058        mMaxWidthMode = mMinWidthMode = PIXELS;
3059
3060        requestLayout();
3061        invalidate();
3062    }
3063
3064    /**
3065     * Sets line spacing for this TextView.  Each line will have its height
3066     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3067     *
3068     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3069     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3070     */
3071    public void setLineSpacing(float add, float mult) {
3072        if (mSpacingAdd != add || mSpacingMult != mult) {
3073            mSpacingAdd = add;
3074            mSpacingMult = mult;
3075
3076            if (mLayout != null) {
3077                nullLayouts();
3078                requestLayout();
3079                invalidate();
3080            }
3081        }
3082    }
3083
3084    /**
3085     * Gets the line spacing multiplier
3086     *
3087     * @return the value by which each line's height is multiplied to get its actual height.
3088     *
3089     * @see #setLineSpacing(float, float)
3090     * @see #getLineSpacingExtra()
3091     *
3092     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3093     */
3094    public float getLineSpacingMultiplier() {
3095        return mSpacingMult;
3096    }
3097
3098    /**
3099     * Gets the line spacing extra space
3100     *
3101     * @return the extra space that is added to the height of each lines of this TextView.
3102     *
3103     * @see #setLineSpacing(float, float)
3104     * @see #getLineSpacingMultiplier()
3105     *
3106     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3107     */
3108    public float getLineSpacingExtra() {
3109        return mSpacingAdd;
3110    }
3111
3112    /**
3113     * Convenience method: Append the specified text to the TextView's
3114     * display buffer, upgrading it to BufferType.EDITABLE if it was
3115     * not already editable.
3116     */
3117    public final void append(CharSequence text) {
3118        append(text, 0, text.length());
3119    }
3120
3121    /**
3122     * Convenience method: Append the specified text slice to the TextView's
3123     * display buffer, upgrading it to BufferType.EDITABLE if it was
3124     * not already editable.
3125     */
3126    public void append(CharSequence text, int start, int end) {
3127        if (!(mText instanceof Editable)) {
3128            setText(mText, BufferType.EDITABLE);
3129        }
3130
3131        ((Editable) mText).append(text, start, end);
3132    }
3133
3134    private void updateTextColors() {
3135        boolean inval = false;
3136        int color = mTextColor.getColorForState(getDrawableState(), 0);
3137        if (color != mCurTextColor) {
3138            mCurTextColor = color;
3139            inval = true;
3140        }
3141        if (mLinkTextColor != null) {
3142            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
3143            if (color != mTextPaint.linkColor) {
3144                mTextPaint.linkColor = color;
3145                inval = true;
3146            }
3147        }
3148        if (mHintTextColor != null) {
3149            color = mHintTextColor.getColorForState(getDrawableState(), 0);
3150            if (color != mCurHintTextColor && mText.length() == 0) {
3151                mCurHintTextColor = color;
3152                inval = true;
3153            }
3154        }
3155        if (inval) {
3156            // Text needs to be redrawn with the new color
3157            if (mEditor != null) mEditor.invalidateTextDisplayList();
3158            invalidate();
3159        }
3160    }
3161
3162    @Override
3163    protected void drawableStateChanged() {
3164        super.drawableStateChanged();
3165        if (mTextColor != null && mTextColor.isStateful()
3166                || (mHintTextColor != null && mHintTextColor.isStateful())
3167                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
3168            updateTextColors();
3169        }
3170
3171        final Drawables dr = mDrawables;
3172        if (dr != null) {
3173            int[] state = getDrawableState();
3174            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
3175                dr.mDrawableTop.setState(state);
3176            }
3177            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
3178                dr.mDrawableBottom.setState(state);
3179            }
3180            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
3181                dr.mDrawableLeft.setState(state);
3182            }
3183            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
3184                dr.mDrawableRight.setState(state);
3185            }
3186            if (dr.mDrawableStart != null && dr.mDrawableStart.isStateful()) {
3187                dr.mDrawableStart.setState(state);
3188            }
3189            if (dr.mDrawableEnd != null && dr.mDrawableEnd.isStateful()) {
3190                dr.mDrawableEnd.setState(state);
3191            }
3192        }
3193    }
3194
3195    @Override
3196    public Parcelable onSaveInstanceState() {
3197        Parcelable superState = super.onSaveInstanceState();
3198
3199        // Save state if we are forced to
3200        boolean save = mFreezesText;
3201        int start = 0;
3202        int end = 0;
3203
3204        if (mText != null) {
3205            start = getSelectionStart();
3206            end = getSelectionEnd();
3207            if (start >= 0 || end >= 0) {
3208                // Or save state if there is a selection
3209                save = true;
3210            }
3211        }
3212
3213        if (save) {
3214            SavedState ss = new SavedState(superState);
3215            // XXX Should also save the current scroll position!
3216            ss.selStart = start;
3217            ss.selEnd = end;
3218
3219            if (mText instanceof Spanned) {
3220                /*
3221                 * Calling setText() strips off any ChangeWatchers;
3222                 * strip them now to avoid leaking references.
3223                 * But do it to a copy so that if there are any
3224                 * further changes to the text of this view, it
3225                 * won't get into an inconsistent state.
3226                 */
3227
3228                Spannable sp = new SpannableString(mText);
3229
3230                for (ChangeWatcher cw : sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
3231                    sp.removeSpan(cw);
3232                }
3233
3234                if (mEditor != null) {
3235                    removeMisspelledSpans(sp);
3236                    sp.removeSpan(mEditor.mSuggestionRangeSpan);
3237                }
3238
3239                ss.text = sp;
3240            } else {
3241                ss.text = mText.toString();
3242            }
3243
3244            if (isFocused() && start >= 0 && end >= 0) {
3245                ss.frozenWithFocus = true;
3246            }
3247
3248            ss.error = getError();
3249
3250            return ss;
3251        }
3252
3253        return superState;
3254    }
3255
3256    void removeMisspelledSpans(Spannable spannable) {
3257        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
3258                SuggestionSpan.class);
3259        for (int i = 0; i < suggestionSpans.length; i++) {
3260            int flags = suggestionSpans[i].getFlags();
3261            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
3262                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
3263                spannable.removeSpan(suggestionSpans[i]);
3264            }
3265        }
3266    }
3267
3268    @Override
3269    public void onRestoreInstanceState(Parcelable state) {
3270        if (!(state instanceof SavedState)) {
3271            super.onRestoreInstanceState(state);
3272            return;
3273        }
3274
3275        SavedState ss = (SavedState)state;
3276        super.onRestoreInstanceState(ss.getSuperState());
3277
3278        // XXX restore buffer type too, as well as lots of other stuff
3279        if (ss.text != null) {
3280            setText(ss.text);
3281        }
3282
3283        if (ss.selStart >= 0 && ss.selEnd >= 0) {
3284            if (mText instanceof Spannable) {
3285                int len = mText.length();
3286
3287                if (ss.selStart > len || ss.selEnd > len) {
3288                    String restored = "";
3289
3290                    if (ss.text != null) {
3291                        restored = "(restored) ";
3292                    }
3293
3294                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
3295                          "/" + ss.selEnd + " out of range for " + restored +
3296                          "text " + mText);
3297                } else {
3298                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
3299
3300                    if (ss.frozenWithFocus) {
3301                        createEditorIfNeeded();
3302                        mEditor.mFrozenWithFocus = true;
3303                    }
3304                }
3305            }
3306        }
3307
3308        if (ss.error != null) {
3309            final CharSequence error = ss.error;
3310            // Display the error later, after the first layout pass
3311            post(new Runnable() {
3312                public void run() {
3313                    setError(error);
3314                }
3315            });
3316        }
3317    }
3318
3319    /**
3320     * Control whether this text view saves its entire text contents when
3321     * freezing to an icicle, in addition to dynamic state such as cursor
3322     * position.  By default this is false, not saving the text.  Set to true
3323     * if the text in the text view is not being saved somewhere else in
3324     * persistent storage (such as in a content provider) so that if the
3325     * view is later thawed the user will not lose their data.
3326     *
3327     * @param freezesText Controls whether a frozen icicle should include the
3328     * entire text data: true to include it, false to not.
3329     *
3330     * @attr ref android.R.styleable#TextView_freezesText
3331     */
3332    @android.view.RemotableViewMethod
3333    public void setFreezesText(boolean freezesText) {
3334        mFreezesText = freezesText;
3335    }
3336
3337    /**
3338     * Return whether this text view is including its entire text contents
3339     * in frozen icicles.
3340     *
3341     * @return Returns true if text is included, false if it isn't.
3342     *
3343     * @see #setFreezesText
3344     */
3345    public boolean getFreezesText() {
3346        return mFreezesText;
3347    }
3348
3349    ///////////////////////////////////////////////////////////////////////////
3350
3351    /**
3352     * Sets the Factory used to create new Editables.
3353     */
3354    public final void setEditableFactory(Editable.Factory factory) {
3355        mEditableFactory = factory;
3356        setText(mText);
3357    }
3358
3359    /**
3360     * Sets the Factory used to create new Spannables.
3361     */
3362    public final void setSpannableFactory(Spannable.Factory factory) {
3363        mSpannableFactory = factory;
3364        setText(mText);
3365    }
3366
3367    /**
3368     * Sets the string value of the TextView. TextView <em>does not</em> accept
3369     * HTML-like formatting, which you can do with text strings in XML resource files.
3370     * To style your strings, attach android.text.style.* objects to a
3371     * {@link android.text.SpannableString SpannableString}, or see the
3372     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
3373     * Available Resource Types</a> documentation for an example of setting
3374     * formatted text in the XML resource file.
3375     *
3376     * @attr ref android.R.styleable#TextView_text
3377     */
3378    @android.view.RemotableViewMethod
3379    public final void setText(CharSequence text) {
3380        setText(text, mBufferType);
3381    }
3382
3383    /**
3384     * Like {@link #setText(CharSequence)},
3385     * except that the cursor position (if any) is retained in the new text.
3386     *
3387     * @param text The new text to place in the text view.
3388     *
3389     * @see #setText(CharSequence)
3390     */
3391    @android.view.RemotableViewMethod
3392    public final void setTextKeepState(CharSequence text) {
3393        setTextKeepState(text, mBufferType);
3394    }
3395
3396    /**
3397     * Sets the text that this TextView is to display (see
3398     * {@link #setText(CharSequence)}) and also sets whether it is stored
3399     * in a styleable/spannable buffer and whether it is editable.
3400     *
3401     * @attr ref android.R.styleable#TextView_text
3402     * @attr ref android.R.styleable#TextView_bufferType
3403     */
3404    public void setText(CharSequence text, BufferType type) {
3405        setText(text, type, true, 0);
3406
3407        if (mCharWrapper != null) {
3408            mCharWrapper.mChars = null;
3409        }
3410    }
3411
3412    private void setText(CharSequence text, BufferType type,
3413                         boolean notifyBefore, int oldlen) {
3414        if (text == null) {
3415            text = "";
3416        }
3417
3418        // If suggestions are not enabled, remove the suggestion spans from the text
3419        if (!isSuggestionsEnabled()) {
3420            text = removeSuggestionSpans(text);
3421        }
3422
3423        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
3424
3425        if (text instanceof Spanned &&
3426            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
3427            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
3428                setHorizontalFadingEdgeEnabled(true);
3429                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
3430            } else {
3431                setHorizontalFadingEdgeEnabled(false);
3432                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
3433            }
3434            setEllipsize(TextUtils.TruncateAt.MARQUEE);
3435        }
3436
3437        int n = mFilters.length;
3438        for (int i = 0; i < n; i++) {
3439            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
3440            if (out != null) {
3441                text = out;
3442            }
3443        }
3444
3445        if (notifyBefore) {
3446            if (mText != null) {
3447                oldlen = mText.length();
3448                sendBeforeTextChanged(mText, 0, oldlen, text.length());
3449            } else {
3450                sendBeforeTextChanged("", 0, 0, text.length());
3451            }
3452        }
3453
3454        boolean needEditableForNotification = false;
3455
3456        if (mListeners != null && mListeners.size() != 0) {
3457            needEditableForNotification = true;
3458        }
3459
3460        if (type == BufferType.EDITABLE || getKeyListener() != null ||
3461                needEditableForNotification) {
3462            createEditorIfNeeded();
3463            Editable t = mEditableFactory.newEditable(text);
3464            text = t;
3465            setFilters(t, mFilters);
3466            InputMethodManager imm = InputMethodManager.peekInstance();
3467            if (imm != null) imm.restartInput(this);
3468        } else if (type == BufferType.SPANNABLE || mMovement != null) {
3469            text = mSpannableFactory.newSpannable(text);
3470        } else if (!(text instanceof CharWrapper)) {
3471            text = TextUtils.stringOrSpannedString(text);
3472        }
3473
3474        if (mAutoLinkMask != 0) {
3475            Spannable s2;
3476
3477            if (type == BufferType.EDITABLE || text instanceof Spannable) {
3478                s2 = (Spannable) text;
3479            } else {
3480                s2 = mSpannableFactory.newSpannable(text);
3481            }
3482
3483            if (Linkify.addLinks(s2, mAutoLinkMask)) {
3484                text = s2;
3485                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
3486
3487                /*
3488                 * We must go ahead and set the text before changing the
3489                 * movement method, because setMovementMethod() may call
3490                 * setText() again to try to upgrade the buffer type.
3491                 */
3492                mText = text;
3493
3494                // Do not change the movement method for text that support text selection as it
3495                // would prevent an arbitrary cursor displacement.
3496                if (mLinksClickable && !textCanBeSelected()) {
3497                    setMovementMethod(LinkMovementMethod.getInstance());
3498                }
3499            }
3500        }
3501
3502        mBufferType = type;
3503        mText = text;
3504
3505        if (mTransformation == null) {
3506            mTransformed = text;
3507        } else {
3508            mTransformed = mTransformation.getTransformation(text, this);
3509        }
3510
3511        final int textLength = text.length();
3512
3513        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
3514            Spannable sp = (Spannable) text;
3515
3516            // Remove any ChangeWatchers that might have come from other TextViews.
3517            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
3518            final int count = watchers.length;
3519            for (int i = 0; i < count; i++) {
3520                sp.removeSpan(watchers[i]);
3521            }
3522
3523            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
3524
3525            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
3526                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
3527
3528            if (mEditor != null) mEditor.addSpanWatchers(sp);
3529
3530            if (mTransformation != null) {
3531                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
3532            }
3533
3534            if (mMovement != null) {
3535                mMovement.initialize(this, (Spannable) text);
3536
3537                /*
3538                 * Initializing the movement method will have set the
3539                 * selection, so reset mSelectionMoved to keep that from
3540                 * interfering with the normal on-focus selection-setting.
3541                 */
3542                if (mEditor != null) mEditor.mSelectionMoved = false;
3543            }
3544        }
3545
3546        if (mLayout != null) {
3547            checkForRelayout();
3548        }
3549
3550        sendOnTextChanged(text, 0, oldlen, textLength);
3551        onTextChanged(text, 0, oldlen, textLength);
3552
3553        if (needEditableForNotification) {
3554            sendAfterTextChanged((Editable) text);
3555        }
3556
3557        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
3558        if (mEditor != null) mEditor.prepareCursorControllers();
3559    }
3560
3561    /**
3562     * Sets the TextView to display the specified slice of the specified
3563     * char array.  You must promise that you will not change the contents
3564     * of the array except for right before another call to setText(),
3565     * since the TextView has no way to know that the text
3566     * has changed and that it needs to invalidate and re-layout.
3567     */
3568    public final void setText(char[] text, int start, int len) {
3569        int oldlen = 0;
3570
3571        if (start < 0 || len < 0 || start + len > text.length) {
3572            throw new IndexOutOfBoundsException(start + ", " + len);
3573        }
3574
3575        /*
3576         * We must do the before-notification here ourselves because if
3577         * the old text is a CharWrapper we destroy it before calling
3578         * into the normal path.
3579         */
3580        if (mText != null) {
3581            oldlen = mText.length();
3582            sendBeforeTextChanged(mText, 0, oldlen, len);
3583        } else {
3584            sendBeforeTextChanged("", 0, 0, len);
3585        }
3586
3587        if (mCharWrapper == null) {
3588            mCharWrapper = new CharWrapper(text, start, len);
3589        } else {
3590            mCharWrapper.set(text, start, len);
3591        }
3592
3593        setText(mCharWrapper, mBufferType, false, oldlen);
3594    }
3595
3596    /**
3597     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
3598     * except that the cursor position (if any) is retained in the new text.
3599     *
3600     * @see #setText(CharSequence, android.widget.TextView.BufferType)
3601     */
3602    public final void setTextKeepState(CharSequence text, BufferType type) {
3603        int start = getSelectionStart();
3604        int end = getSelectionEnd();
3605        int len = text.length();
3606
3607        setText(text, type);
3608
3609        if (start >= 0 || end >= 0) {
3610            if (mText instanceof Spannable) {
3611                Selection.setSelection((Spannable) mText,
3612                                       Math.max(0, Math.min(start, len)),
3613                                       Math.max(0, Math.min(end, len)));
3614            }
3615        }
3616    }
3617
3618    @android.view.RemotableViewMethod
3619    public final void setText(int resid) {
3620        setText(getContext().getResources().getText(resid));
3621    }
3622
3623    public final void setText(int resid, BufferType type) {
3624        setText(getContext().getResources().getText(resid), type);
3625    }
3626
3627    /**
3628     * Sets the text to be displayed when the text of the TextView is empty.
3629     * Null means to use the normal empty text. The hint does not currently
3630     * participate in determining the size of the view.
3631     *
3632     * @attr ref android.R.styleable#TextView_hint
3633     */
3634    @android.view.RemotableViewMethod
3635    public final void setHint(CharSequence hint) {
3636        mHint = TextUtils.stringOrSpannedString(hint);
3637
3638        if (mLayout != null) {
3639            checkForRelayout();
3640        }
3641
3642        if (mText.length() == 0) {
3643            invalidate();
3644        }
3645
3646        // Invalidate display list if hint is currently used
3647        if (mEditor != null && mText.length() == 0 && mHint != null) {
3648            mEditor.invalidateTextDisplayList();
3649        }
3650    }
3651
3652    /**
3653     * Sets the text to be displayed when the text of the TextView is empty,
3654     * from a resource.
3655     *
3656     * @attr ref android.R.styleable#TextView_hint
3657     */
3658    @android.view.RemotableViewMethod
3659    public final void setHint(int resid) {
3660        setHint(getContext().getResources().getText(resid));
3661    }
3662
3663    /**
3664     * Returns the hint that is displayed when the text of the TextView
3665     * is empty.
3666     *
3667     * @attr ref android.R.styleable#TextView_hint
3668     */
3669    @ViewDebug.CapturedViewProperty
3670    public CharSequence getHint() {
3671        return mHint;
3672    }
3673
3674    boolean isSingleLine() {
3675        return mSingleLine;
3676    }
3677
3678    private static boolean isMultilineInputType(int type) {
3679        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
3680            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
3681    }
3682
3683    /**
3684     * Removes the suggestion spans.
3685     */
3686    CharSequence removeSuggestionSpans(CharSequence text) {
3687       if (text instanceof Spanned) {
3688           Spannable spannable;
3689           if (text instanceof Spannable) {
3690               spannable = (Spannable) text;
3691           } else {
3692               spannable = new SpannableString(text);
3693               text = spannable;
3694           }
3695
3696           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
3697           for (int i = 0; i < spans.length; i++) {
3698               spannable.removeSpan(spans[i]);
3699           }
3700       }
3701       return text;
3702    }
3703
3704    /**
3705     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
3706     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
3707     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
3708     * then a soft keyboard will not be displayed for this text view.
3709     *
3710     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
3711     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
3712     * type.
3713     *
3714     * @see #getInputType()
3715     * @see #setRawInputType(int)
3716     * @see android.text.InputType
3717     * @attr ref android.R.styleable#TextView_inputType
3718     */
3719    public void setInputType(int type) {
3720        final boolean wasPassword = isPasswordInputType(getInputType());
3721        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
3722        setInputType(type, false);
3723        final boolean isPassword = isPasswordInputType(type);
3724        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
3725        boolean forceUpdate = false;
3726        if (isPassword) {
3727            setTransformationMethod(PasswordTransformationMethod.getInstance());
3728            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
3729        } else if (isVisiblePassword) {
3730            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3731                forceUpdate = true;
3732            }
3733            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
3734        } else if (wasPassword || wasVisiblePassword) {
3735            // not in password mode, clean up typeface and transformation
3736            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
3737            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3738                forceUpdate = true;
3739            }
3740        }
3741
3742        boolean singleLine = !isMultilineInputType(type);
3743
3744        // We need to update the single line mode if it has changed or we
3745        // were previously in password mode.
3746        if (mSingleLine != singleLine || forceUpdate) {
3747            // Change single line mode, but only change the transformation if
3748            // we are not in password mode.
3749            applySingleLine(singleLine, !isPassword, true);
3750        }
3751
3752        if (!isSuggestionsEnabled()) {
3753            mText = removeSuggestionSpans(mText);
3754        }
3755
3756        InputMethodManager imm = InputMethodManager.peekInstance();
3757        if (imm != null) imm.restartInput(this);
3758    }
3759
3760    /**
3761     * It would be better to rely on the input type for everything. A password inputType should have
3762     * a password transformation. We should hence use isPasswordInputType instead of this method.
3763     *
3764     * We should:
3765     * - Call setInputType in setKeyListener instead of changing the input type directly (which
3766     * would install the correct transformation).
3767     * - Refuse the installation of a non-password transformation in setTransformation if the input
3768     * type is password.
3769     *
3770     * However, this is like this for legacy reasons and we cannot break existing apps. This method
3771     * is useful since it matches what the user can see (obfuscated text or not).
3772     *
3773     * @return true if the current transformation method is of the password type.
3774     */
3775    private boolean hasPasswordTransformationMethod() {
3776        return mTransformation instanceof PasswordTransformationMethod;
3777    }
3778
3779    private static boolean isPasswordInputType(int inputType) {
3780        final int variation =
3781                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3782        return variation
3783                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
3784                || variation
3785                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
3786                || variation
3787                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
3788    }
3789
3790    private static boolean isVisiblePasswordInputType(int inputType) {
3791        final int variation =
3792                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3793        return variation
3794                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
3795    }
3796
3797    /**
3798     * Directly change the content type integer of the text view, without
3799     * modifying any other state.
3800     * @see #setInputType(int)
3801     * @see android.text.InputType
3802     * @attr ref android.R.styleable#TextView_inputType
3803     */
3804    public void setRawInputType(int type) {
3805        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
3806        createEditorIfNeeded();
3807        mEditor.mInputType = type;
3808    }
3809
3810    private void setInputType(int type, boolean direct) {
3811        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
3812        KeyListener input;
3813        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
3814            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
3815            TextKeyListener.Capitalize cap;
3816            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
3817                cap = TextKeyListener.Capitalize.CHARACTERS;
3818            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
3819                cap = TextKeyListener.Capitalize.WORDS;
3820            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
3821                cap = TextKeyListener.Capitalize.SENTENCES;
3822            } else {
3823                cap = TextKeyListener.Capitalize.NONE;
3824            }
3825            input = TextKeyListener.getInstance(autotext, cap);
3826        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
3827            input = DigitsKeyListener.getInstance(
3828                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
3829                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
3830        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
3831            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
3832                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
3833                    input = DateKeyListener.getInstance();
3834                    break;
3835                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
3836                    input = TimeKeyListener.getInstance();
3837                    break;
3838                default:
3839                    input = DateTimeKeyListener.getInstance();
3840                    break;
3841            }
3842        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
3843            input = DialerKeyListener.getInstance();
3844        } else {
3845            input = TextKeyListener.getInstance();
3846        }
3847        setRawInputType(type);
3848        if (direct) {
3849            createEditorIfNeeded();
3850            mEditor.mKeyListener = input;
3851        } else {
3852            setKeyListenerOnly(input);
3853        }
3854    }
3855
3856    /**
3857     * Get the type of the editable content.
3858     *
3859     * @see #setInputType(int)
3860     * @see android.text.InputType
3861     */
3862    public int getInputType() {
3863        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
3864    }
3865
3866    /**
3867     * Change the editor type integer associated with the text view, which
3868     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
3869     * has focus.
3870     * @see #getImeOptions
3871     * @see android.view.inputmethod.EditorInfo
3872     * @attr ref android.R.styleable#TextView_imeOptions
3873     */
3874    public void setImeOptions(int imeOptions) {
3875        createEditorIfNeeded();
3876        mEditor.createInputContentTypeIfNeeded();
3877        mEditor.mInputContentType.imeOptions = imeOptions;
3878    }
3879
3880    /**
3881     * Get the type of the IME editor.
3882     *
3883     * @see #setImeOptions(int)
3884     * @see android.view.inputmethod.EditorInfo
3885     */
3886    public int getImeOptions() {
3887        return mEditor != null && mEditor.mInputContentType != null
3888                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
3889    }
3890
3891    /**
3892     * Change the custom IME action associated with the text view, which
3893     * will be reported to an IME with {@link EditorInfo#actionLabel}
3894     * and {@link EditorInfo#actionId} when it has focus.
3895     * @see #getImeActionLabel
3896     * @see #getImeActionId
3897     * @see android.view.inputmethod.EditorInfo
3898     * @attr ref android.R.styleable#TextView_imeActionLabel
3899     * @attr ref android.R.styleable#TextView_imeActionId
3900     */
3901    public void setImeActionLabel(CharSequence label, int actionId) {
3902        createEditorIfNeeded();
3903        mEditor.createInputContentTypeIfNeeded();
3904        mEditor.mInputContentType.imeActionLabel = label;
3905        mEditor.mInputContentType.imeActionId = actionId;
3906    }
3907
3908    /**
3909     * Get the IME action label previous set with {@link #setImeActionLabel}.
3910     *
3911     * @see #setImeActionLabel
3912     * @see android.view.inputmethod.EditorInfo
3913     */
3914    public CharSequence getImeActionLabel() {
3915        return mEditor != null && mEditor.mInputContentType != null
3916                ? mEditor.mInputContentType.imeActionLabel : null;
3917    }
3918
3919    /**
3920     * Get the IME action ID previous set with {@link #setImeActionLabel}.
3921     *
3922     * @see #setImeActionLabel
3923     * @see android.view.inputmethod.EditorInfo
3924     */
3925    public int getImeActionId() {
3926        return mEditor != null && mEditor.mInputContentType != null
3927                ? mEditor.mInputContentType.imeActionId : 0;
3928    }
3929
3930    /**
3931     * Set a special listener to be called when an action is performed
3932     * on the text view.  This will be called when the enter key is pressed,
3933     * or when an action supplied to the IME is selected by the user.  Setting
3934     * this means that the normal hard key event will not insert a newline
3935     * into the text view, even if it is multi-line; holding down the ALT
3936     * modifier will, however, allow the user to insert a newline character.
3937     */
3938    public void setOnEditorActionListener(OnEditorActionListener l) {
3939        createEditorIfNeeded();
3940        mEditor.createInputContentTypeIfNeeded();
3941        mEditor.mInputContentType.onEditorActionListener = l;
3942    }
3943
3944    /**
3945     * Called when an attached input method calls
3946     * {@link InputConnection#performEditorAction(int)
3947     * InputConnection.performEditorAction()}
3948     * for this text view.  The default implementation will call your action
3949     * listener supplied to {@link #setOnEditorActionListener}, or perform
3950     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
3951     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
3952     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
3953     * EditorInfo.IME_ACTION_DONE}.
3954     *
3955     * <p>For backwards compatibility, if no IME options have been set and the
3956     * text view would not normally advance focus on enter, then
3957     * the NEXT and DONE actions received here will be turned into an enter
3958     * key down/up pair to go through the normal key handling.
3959     *
3960     * @param actionCode The code of the action being performed.
3961     *
3962     * @see #setOnEditorActionListener
3963     */
3964    public void onEditorAction(int actionCode) {
3965        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
3966        if (ict != null) {
3967            if (ict.onEditorActionListener != null) {
3968                if (ict.onEditorActionListener.onEditorAction(this,
3969                        actionCode, null)) {
3970                    return;
3971                }
3972            }
3973
3974            // This is the handling for some default action.
3975            // Note that for backwards compatibility we don't do this
3976            // default handling if explicit ime options have not been given,
3977            // instead turning this into the normal enter key codes that an
3978            // app may be expecting.
3979            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
3980                View v = focusSearch(FOCUS_FORWARD);
3981                if (v != null) {
3982                    if (!v.requestFocus(FOCUS_FORWARD)) {
3983                        throw new IllegalStateException("focus search returned a view " +
3984                                "that wasn't able to take focus!");
3985                    }
3986                }
3987                return;
3988
3989            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
3990                View v = focusSearch(FOCUS_BACKWARD);
3991                if (v != null) {
3992                    if (!v.requestFocus(FOCUS_BACKWARD)) {
3993                        throw new IllegalStateException("focus search returned a view " +
3994                                "that wasn't able to take focus!");
3995                    }
3996                }
3997                return;
3998
3999            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4000                InputMethodManager imm = InputMethodManager.peekInstance();
4001                if (imm != null && imm.isActive(this)) {
4002                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4003                }
4004                return;
4005            }
4006        }
4007
4008        ViewRootImpl viewRootImpl = getViewRootImpl();
4009        if (viewRootImpl != null) {
4010            long eventTime = SystemClock.uptimeMillis();
4011            viewRootImpl.dispatchKeyFromIme(
4012                    new KeyEvent(eventTime, eventTime,
4013                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4014                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4015                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4016                    | KeyEvent.FLAG_EDITOR_ACTION));
4017            viewRootImpl.dispatchKeyFromIme(
4018                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4019                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4020                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4021                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4022                    | KeyEvent.FLAG_EDITOR_ACTION));
4023        }
4024    }
4025
4026    /**
4027     * Set the private content type of the text, which is the
4028     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4029     * field that will be filled in when creating an input connection.
4030     *
4031     * @see #getPrivateImeOptions()
4032     * @see EditorInfo#privateImeOptions
4033     * @attr ref android.R.styleable#TextView_privateImeOptions
4034     */
4035    public void setPrivateImeOptions(String type) {
4036        createEditorIfNeeded();
4037        mEditor.createInputContentTypeIfNeeded();
4038        mEditor.mInputContentType.privateImeOptions = type;
4039    }
4040
4041    /**
4042     * Get the private type of the content.
4043     *
4044     * @see #setPrivateImeOptions(String)
4045     * @see EditorInfo#privateImeOptions
4046     */
4047    public String getPrivateImeOptions() {
4048        return mEditor != null && mEditor.mInputContentType != null
4049                ? mEditor.mInputContentType.privateImeOptions : null;
4050    }
4051
4052    /**
4053     * Set the extra input data of the text, which is the
4054     * {@link EditorInfo#extras TextBoxAttribute.extras}
4055     * Bundle that will be filled in when creating an input connection.  The
4056     * given integer is the resource ID of an XML resource holding an
4057     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4058     *
4059     * @see #getInputExtras(boolean)
4060     * @see EditorInfo#extras
4061     * @attr ref android.R.styleable#TextView_editorExtras
4062     */
4063    public void setInputExtras(int xmlResId) throws XmlPullParserException, IOException {
4064        createEditorIfNeeded();
4065        XmlResourceParser parser = getResources().getXml(xmlResId);
4066        mEditor.createInputContentTypeIfNeeded();
4067        mEditor.mInputContentType.extras = new Bundle();
4068        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4069    }
4070
4071    /**
4072     * Retrieve the input extras currently associated with the text view, which
4073     * can be viewed as well as modified.
4074     *
4075     * @param create If true, the extras will be created if they don't already
4076     * exist.  Otherwise, null will be returned if none have been created.
4077     * @see #setInputExtras(int)
4078     * @see EditorInfo#extras
4079     * @attr ref android.R.styleable#TextView_editorExtras
4080     */
4081    public Bundle getInputExtras(boolean create) {
4082        if (mEditor == null && !create) return null;
4083        createEditorIfNeeded();
4084        if (mEditor.mInputContentType == null) {
4085            if (!create) return null;
4086            mEditor.createInputContentTypeIfNeeded();
4087        }
4088        if (mEditor.mInputContentType.extras == null) {
4089            if (!create) return null;
4090            mEditor.mInputContentType.extras = new Bundle();
4091        }
4092        return mEditor.mInputContentType.extras;
4093    }
4094
4095    /**
4096     * Returns the error message that was set to be displayed with
4097     * {@link #setError}, or <code>null</code> if no error was set
4098     * or if it the error was cleared by the widget after user input.
4099     */
4100    public CharSequence getError() {
4101        return mEditor == null ? null : mEditor.mError;
4102    }
4103
4104    /**
4105     * Sets the right-hand compound drawable of the TextView to the "error"
4106     * icon and sets an error message that will be displayed in a popup when
4107     * the TextView has focus.  The icon and error message will be reset to
4108     * null when any key events cause changes to the TextView's text.  If the
4109     * <code>error</code> is <code>null</code>, the error message and icon
4110     * will be cleared.
4111     */
4112    @android.view.RemotableViewMethod
4113    public void setError(CharSequence error) {
4114        if (error == null) {
4115            setError(null, null);
4116        } else {
4117            Drawable dr = getContext().getResources().
4118                getDrawable(com.android.internal.R.drawable.indicator_input_error);
4119
4120            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
4121            setError(error, dr);
4122        }
4123    }
4124
4125    /**
4126     * Sets the right-hand compound drawable of the TextView to the specified
4127     * icon and sets an error message that will be displayed in a popup when
4128     * the TextView has focus.  The icon and error message will be reset to
4129     * null when any key events cause changes to the TextView's text.  The
4130     * drawable must already have had {@link Drawable#setBounds} set on it.
4131     * If the <code>error</code> is <code>null</code>, the error message will
4132     * be cleared (and you should provide a <code>null</code> icon as well).
4133     */
4134    public void setError(CharSequence error, Drawable icon) {
4135        createEditorIfNeeded();
4136        mEditor.setError(error, icon);
4137    }
4138
4139    @Override
4140    protected boolean setFrame(int l, int t, int r, int b) {
4141        boolean result = super.setFrame(l, t, r, b);
4142
4143        if (mEditor != null) mEditor.setFrame();
4144
4145        restartMarqueeIfNeeded();
4146
4147        return result;
4148    }
4149
4150    private void restartMarqueeIfNeeded() {
4151        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4152            mRestartMarquee = false;
4153            startMarquee();
4154        }
4155    }
4156
4157    /**
4158     * Sets the list of input filters that will be used if the buffer is
4159     * Editable. Has no effect otherwise.
4160     *
4161     * @attr ref android.R.styleable#TextView_maxLength
4162     */
4163    public void setFilters(InputFilter[] filters) {
4164        if (filters == null) {
4165            throw new IllegalArgumentException();
4166        }
4167
4168        mFilters = filters;
4169
4170        if (mText instanceof Editable) {
4171            setFilters((Editable) mText, filters);
4172        }
4173    }
4174
4175    /**
4176     * Sets the list of input filters on the specified Editable,
4177     * and includes mInput in the list if it is an InputFilter.
4178     */
4179    private void setFilters(Editable e, InputFilter[] filters) {
4180        if (mEditor != null && mEditor.mKeyListener instanceof InputFilter) {
4181            InputFilter[] nf = new InputFilter[filters.length + 1];
4182
4183            System.arraycopy(filters, 0, nf, 0, filters.length);
4184            nf[filters.length] = (InputFilter) mEditor.mKeyListener;
4185
4186            e.setFilters(nf);
4187        } else {
4188            e.setFilters(filters);
4189        }
4190    }
4191
4192    /**
4193     * Returns the current list of input filters.
4194     *
4195     * @attr ref android.R.styleable#TextView_maxLength
4196     */
4197    public InputFilter[] getFilters() {
4198        return mFilters;
4199    }
4200
4201    /////////////////////////////////////////////////////////////////////////
4202
4203    int getVerticalOffset(boolean forceNormal) {
4204        int voffset = 0;
4205        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4206
4207        Layout l = mLayout;
4208        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4209            l = mHintLayout;
4210        }
4211
4212        if (gravity != Gravity.TOP) {
4213            int boxht;
4214
4215            if (l == mHintLayout) {
4216                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
4217                        getCompoundPaddingBottom();
4218            } else {
4219                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
4220                        getExtendedPaddingBottom();
4221            }
4222            int textht = l.getHeight();
4223
4224            if (textht < boxht) {
4225                if (gravity == Gravity.BOTTOM)
4226                    voffset = boxht - textht;
4227                else // (gravity == Gravity.CENTER_VERTICAL)
4228                    voffset = (boxht - textht) >> 1;
4229            }
4230        }
4231        return voffset;
4232    }
4233
4234    private int getBottomVerticalOffset(boolean forceNormal) {
4235        int voffset = 0;
4236        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4237
4238        Layout l = mLayout;
4239        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4240            l = mHintLayout;
4241        }
4242
4243        if (gravity != Gravity.BOTTOM) {
4244            int boxht;
4245
4246            if (l == mHintLayout) {
4247                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
4248                        getCompoundPaddingBottom();
4249            } else {
4250                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
4251                        getExtendedPaddingBottom();
4252            }
4253            int textht = l.getHeight();
4254
4255            if (textht < boxht) {
4256                if (gravity == Gravity.TOP)
4257                    voffset = boxht - textht;
4258                else // (gravity == Gravity.CENTER_VERTICAL)
4259                    voffset = (boxht - textht) >> 1;
4260            }
4261        }
4262        return voffset;
4263    }
4264
4265    void invalidateCursorPath() {
4266        if (mHighlightPathBogus) {
4267            invalidateCursor();
4268        } else {
4269            final int horizontalPadding = getCompoundPaddingLeft();
4270            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4271
4272            if (mEditor.mCursorCount == 0) {
4273                synchronized (TEMP_RECTF) {
4274                    /*
4275                     * The reason for this concern about the thickness of the
4276                     * cursor and doing the floor/ceil on the coordinates is that
4277                     * some EditTexts (notably textfields in the Browser) have
4278                     * anti-aliased text where not all the characters are
4279                     * necessarily at integer-multiple locations.  This should
4280                     * make sure the entire cursor gets invalidated instead of
4281                     * sometimes missing half a pixel.
4282                     */
4283                    float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
4284                    if (thick < 1.0f) {
4285                        thick = 1.0f;
4286                    }
4287
4288                    thick /= 2.0f;
4289
4290                    // mHighlightPath is guaranteed to be non null at that point.
4291                    mHighlightPath.computeBounds(TEMP_RECTF, false);
4292
4293                    invalidate((int) FloatMath.floor(horizontalPadding + TEMP_RECTF.left - thick),
4294                            (int) FloatMath.floor(verticalPadding + TEMP_RECTF.top - thick),
4295                            (int) FloatMath.ceil(horizontalPadding + TEMP_RECTF.right + thick),
4296                            (int) FloatMath.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
4297                }
4298            } else {
4299                for (int i = 0; i < mEditor.mCursorCount; i++) {
4300                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4301                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
4302                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
4303                }
4304            }
4305        }
4306    }
4307
4308    void invalidateCursor() {
4309        int where = getSelectionEnd();
4310
4311        invalidateCursor(where, where, where);
4312    }
4313
4314    private void invalidateCursor(int a, int b, int c) {
4315        if (a >= 0 || b >= 0 || c >= 0) {
4316            int start = Math.min(Math.min(a, b), c);
4317            int end = Math.max(Math.max(a, b), c);
4318            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
4319        }
4320    }
4321
4322    /**
4323     * Invalidates the region of text enclosed between the start and end text offsets.
4324     */
4325    void invalidateRegion(int start, int end, boolean invalidateCursor) {
4326        if (mLayout == null) {
4327            invalidate();
4328        } else {
4329                int lineStart = mLayout.getLineForOffset(start);
4330                int top = mLayout.getLineTop(lineStart);
4331
4332                // This is ridiculous, but the descent from the line above
4333                // can hang down into the line we really want to redraw,
4334                // so we have to invalidate part of the line above to make
4335                // sure everything that needs to be redrawn really is.
4336                // (But not the whole line above, because that would cause
4337                // the same problem with the descenders on the line above it!)
4338                if (lineStart > 0) {
4339                    top -= mLayout.getLineDescent(lineStart - 1);
4340                }
4341
4342                int lineEnd;
4343
4344                if (start == end)
4345                    lineEnd = lineStart;
4346                else
4347                    lineEnd = mLayout.getLineForOffset(end);
4348
4349                int bottom = mLayout.getLineBottom(lineEnd);
4350
4351                // mEditor can be null in case selection is set programmatically.
4352                if (invalidateCursor && mEditor != null) {
4353                    for (int i = 0; i < mEditor.mCursorCount; i++) {
4354                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4355                        top = Math.min(top, bounds.top);
4356                        bottom = Math.max(bottom, bounds.bottom);
4357                    }
4358                }
4359
4360                final int compoundPaddingLeft = getCompoundPaddingLeft();
4361                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4362
4363                int left, right;
4364                if (lineStart == lineEnd && !invalidateCursor) {
4365                    left = (int) mLayout.getPrimaryHorizontal(start);
4366                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
4367                    left += compoundPaddingLeft;
4368                    right += compoundPaddingLeft;
4369                } else {
4370                    // Rectangle bounding box when the region spans several lines
4371                    left = compoundPaddingLeft;
4372                    right = getWidth() - getCompoundPaddingRight();
4373                }
4374
4375                invalidate(mScrollX + left, verticalPadding + top,
4376                        mScrollX + right, verticalPadding + bottom);
4377        }
4378    }
4379
4380    private void registerForPreDraw() {
4381        if (!mPreDrawRegistered) {
4382            getViewTreeObserver().addOnPreDrawListener(this);
4383            mPreDrawRegistered = true;
4384        }
4385    }
4386
4387    /**
4388     * {@inheritDoc}
4389     */
4390    public boolean onPreDraw() {
4391        if (mLayout == null) {
4392            assumeLayout();
4393        }
4394
4395        boolean changed = false;
4396
4397        if (mMovement != null) {
4398            /* This code also provides auto-scrolling when a cursor is moved using a
4399             * CursorController (insertion point or selection limits).
4400             * For selection, ensure start or end is visible depending on controller's state.
4401             */
4402            int curs = getSelectionEnd();
4403            // Do not create the controller if it is not already created.
4404            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
4405                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
4406                curs = getSelectionStart();
4407            }
4408
4409            /*
4410             * TODO: This should really only keep the end in view if
4411             * it already was before the text changed.  I'm not sure
4412             * of a good way to tell from here if it was.
4413             */
4414            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
4415                curs = mText.length();
4416            }
4417
4418            if (curs >= 0) {
4419                changed = bringPointIntoView(curs);
4420            }
4421        } else {
4422            changed = bringTextIntoView();
4423        }
4424
4425        // This has to be checked here since:
4426        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
4427        //   a screen rotation) since layout is not yet initialized at that point.
4428        if (mEditor != null && mEditor.mCreatedWithASelection) {
4429            mEditor.startSelectionActionMode();
4430            mEditor.mCreatedWithASelection = false;
4431        }
4432
4433        // Phone specific code (there is no ExtractEditText on tablets).
4434        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
4435        // not be set. Do the test here instead.
4436        if (this instanceof ExtractEditText && hasSelection() && mEditor != null) {
4437            mEditor.startSelectionActionMode();
4438        }
4439
4440        getViewTreeObserver().removeOnPreDrawListener(this);
4441        mPreDrawRegistered = false;
4442
4443        return !changed;
4444    }
4445
4446    @Override
4447    protected void onAttachedToWindow() {
4448        super.onAttachedToWindow();
4449
4450        mTemporaryDetach = false;
4451
4452        // Resolve drawables as the layout direction has been resolved
4453        resolveDrawables();
4454
4455        if (mEditor != null) mEditor.onAttachedToWindow();
4456    }
4457
4458    @Override
4459    protected void onDetachedFromWindow() {
4460        super.onDetachedFromWindow();
4461
4462        if (mPreDrawRegistered) {
4463            getViewTreeObserver().removeOnPreDrawListener(this);
4464            mPreDrawRegistered = false;
4465        }
4466
4467        resetResolvedDrawables();
4468
4469        if (mEditor != null) mEditor.onDetachedFromWindow();
4470    }
4471
4472    @Override
4473    public void onScreenStateChanged(int screenState) {
4474        super.onScreenStateChanged(screenState);
4475        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
4476    }
4477
4478    @Override
4479    protected boolean isPaddingOffsetRequired() {
4480        return mShadowRadius != 0 || mDrawables != null;
4481    }
4482
4483    @Override
4484    protected int getLeftPaddingOffset() {
4485        return getCompoundPaddingLeft() - mPaddingLeft +
4486                (int) Math.min(0, mShadowDx - mShadowRadius);
4487    }
4488
4489    @Override
4490    protected int getTopPaddingOffset() {
4491        return (int) Math.min(0, mShadowDy - mShadowRadius);
4492    }
4493
4494    @Override
4495    protected int getBottomPaddingOffset() {
4496        return (int) Math.max(0, mShadowDy + mShadowRadius);
4497    }
4498
4499    @Override
4500    protected int getRightPaddingOffset() {
4501        return -(getCompoundPaddingRight() - mPaddingRight) +
4502                (int) Math.max(0, mShadowDx + mShadowRadius);
4503    }
4504
4505    @Override
4506    protected boolean verifyDrawable(Drawable who) {
4507        final boolean verified = super.verifyDrawable(who);
4508        if (!verified && mDrawables != null) {
4509            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
4510                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom ||
4511                    who == mDrawables.mDrawableStart || who == mDrawables.mDrawableEnd;
4512        }
4513        return verified;
4514    }
4515
4516    @Override
4517    public void jumpDrawablesToCurrentState() {
4518        super.jumpDrawablesToCurrentState();
4519        if (mDrawables != null) {
4520            if (mDrawables.mDrawableLeft != null) {
4521                mDrawables.mDrawableLeft.jumpToCurrentState();
4522            }
4523            if (mDrawables.mDrawableTop != null) {
4524                mDrawables.mDrawableTop.jumpToCurrentState();
4525            }
4526            if (mDrawables.mDrawableRight != null) {
4527                mDrawables.mDrawableRight.jumpToCurrentState();
4528            }
4529            if (mDrawables.mDrawableBottom != null) {
4530                mDrawables.mDrawableBottom.jumpToCurrentState();
4531            }
4532            if (mDrawables.mDrawableStart != null) {
4533                mDrawables.mDrawableStart.jumpToCurrentState();
4534            }
4535            if (mDrawables.mDrawableEnd != null) {
4536                mDrawables.mDrawableEnd.jumpToCurrentState();
4537            }
4538        }
4539    }
4540
4541    @Override
4542    public void invalidateDrawable(Drawable drawable) {
4543        if (verifyDrawable(drawable)) {
4544            final Rect dirty = drawable.getBounds();
4545            int scrollX = mScrollX;
4546            int scrollY = mScrollY;
4547
4548            // IMPORTANT: The coordinates below are based on the coordinates computed
4549            // for each compound drawable in onDraw(). Make sure to update each section
4550            // accordingly.
4551            final TextView.Drawables drawables = mDrawables;
4552            if (drawables != null) {
4553                if (drawable == drawables.mDrawableLeft) {
4554                    final int compoundPaddingTop = getCompoundPaddingTop();
4555                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4556                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4557
4558                    scrollX += mPaddingLeft;
4559                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
4560                } else if (drawable == drawables.mDrawableRight) {
4561                    final int compoundPaddingTop = getCompoundPaddingTop();
4562                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4563                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4564
4565                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
4566                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
4567                } else if (drawable == drawables.mDrawableTop) {
4568                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4569                    final int compoundPaddingRight = getCompoundPaddingRight();
4570                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4571
4572                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
4573                    scrollY += mPaddingTop;
4574                } else if (drawable == drawables.mDrawableBottom) {
4575                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4576                    final int compoundPaddingRight = getCompoundPaddingRight();
4577                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4578
4579                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
4580                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
4581                }
4582            }
4583
4584            invalidate(dirty.left + scrollX, dirty.top + scrollY,
4585                    dirty.right + scrollX, dirty.bottom + scrollY);
4586        }
4587    }
4588
4589    /**
4590     * @hide
4591     */
4592    @Override
4593    public int getResolvedLayoutDirection(Drawable who) {
4594        if (who == null) return View.LAYOUT_DIRECTION_LTR;
4595        if (mDrawables != null) {
4596            final Drawables drawables = mDrawables;
4597            if (who == drawables.mDrawableLeft || who == drawables.mDrawableRight ||
4598                who == drawables.mDrawableTop || who == drawables.mDrawableBottom ||
4599                who == drawables.mDrawableStart || who == drawables.mDrawableEnd) {
4600                return getResolvedLayoutDirection();
4601            }
4602        }
4603        return super.getResolvedLayoutDirection(who);
4604    }
4605
4606    @Override
4607    public boolean hasOverlappingRendering() {
4608        return (getBackground() != null || mText instanceof Spannable || hasSelection());
4609    }
4610
4611    /**
4612     * When a TextView is used to display a useful piece of information to the user (such as a
4613     * contact's address), it should be made selectable, so that the user can select and copy this
4614     * content.
4615     *
4616     * Use {@link #setTextIsSelectable(boolean)} or the
4617     * {@link android.R.styleable#TextView_textIsSelectable} XML attribute to make this TextView
4618     * selectable (text is not selectable by default).
4619     *
4620     * Note that this method simply returns the state of this flag. Although this flag has to be set
4621     * in order to select text in non-editable TextView, the content of an {@link EditText} can
4622     * always be selected, independently of the value of this flag.
4623     *
4624     * @return True if the text displayed in this TextView can be selected by the user.
4625     *
4626     * @attr ref android.R.styleable#TextView_textIsSelectable
4627     */
4628    public boolean isTextSelectable() {
4629        return mEditor == null ? false : mEditor.mTextIsSelectable;
4630    }
4631
4632    /**
4633     * Sets whether or not (default) the content of this view is selectable by the user.
4634     *
4635     * Note that this methods affect the {@link #setFocusable(boolean)},
4636     * {@link #setFocusableInTouchMode(boolean)} {@link #setClickable(boolean)} and
4637     * {@link #setLongClickable(boolean)} states and you may want to restore these if they were
4638     * customized.
4639     *
4640     * See {@link #isTextSelectable} for details.
4641     *
4642     * @param selectable Whether or not the content of this TextView should be selectable.
4643     */
4644    public void setTextIsSelectable(boolean selectable) {
4645        if (!selectable && mEditor == null) return; // false is default value with no edit data
4646
4647        createEditorIfNeeded();
4648        if (mEditor.mTextIsSelectable == selectable) return;
4649
4650        mEditor.mTextIsSelectable = selectable;
4651        setFocusableInTouchMode(selectable);
4652        setFocusable(selectable);
4653        setClickable(selectable);
4654        setLongClickable(selectable);
4655
4656        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
4657
4658        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
4659        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
4660
4661        // Called by setText above, but safer in case of future code changes
4662        mEditor.prepareCursorControllers();
4663    }
4664
4665    @Override
4666    protected int[] onCreateDrawableState(int extraSpace) {
4667        final int[] drawableState;
4668
4669        if (mSingleLine) {
4670            drawableState = super.onCreateDrawableState(extraSpace);
4671        } else {
4672            drawableState = super.onCreateDrawableState(extraSpace + 1);
4673            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
4674        }
4675
4676        if (isTextSelectable()) {
4677            // Disable pressed state, which was introduced when TextView was made clickable.
4678            // Prevents text color change.
4679            // setClickable(false) would have a similar effect, but it also disables focus changes
4680            // and long press actions, which are both needed by text selection.
4681            final int length = drawableState.length;
4682            for (int i = 0; i < length; i++) {
4683                if (drawableState[i] == R.attr.state_pressed) {
4684                    final int[] nonPressedState = new int[length - 1];
4685                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
4686                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
4687                    return nonPressedState;
4688                }
4689            }
4690        }
4691
4692        return drawableState;
4693    }
4694
4695    private Path getUpdatedHighlightPath() {
4696        Path highlight = null;
4697        Paint highlightPaint = mHighlightPaint;
4698
4699        final int selStart = getSelectionStart();
4700        final int selEnd = getSelectionEnd();
4701        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
4702            if (selStart == selEnd) {
4703                if (mEditor != null && mEditor.isCursorVisible() &&
4704                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
4705                        (2 * Editor.BLINK) < Editor.BLINK) {
4706                    if (mHighlightPathBogus) {
4707                        if (mHighlightPath == null) mHighlightPath = new Path();
4708                        mHighlightPath.reset();
4709                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
4710                        mEditor.updateCursorsPositions();
4711                        mHighlightPathBogus = false;
4712                    }
4713
4714                    // XXX should pass to skin instead of drawing directly
4715                    highlightPaint.setColor(mCurTextColor);
4716                    highlightPaint.setStyle(Paint.Style.STROKE);
4717                    highlight = mHighlightPath;
4718                }
4719            } else {
4720                if (mHighlightPathBogus) {
4721                    if (mHighlightPath == null) mHighlightPath = new Path();
4722                    mHighlightPath.reset();
4723                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4724                    mHighlightPathBogus = false;
4725                }
4726
4727                // XXX should pass to skin instead of drawing directly
4728                highlightPaint.setColor(mHighlightColor);
4729                highlightPaint.setStyle(Paint.Style.FILL);
4730
4731                highlight = mHighlightPath;
4732            }
4733        }
4734        return highlight;
4735    }
4736
4737    @Override
4738    protected void onDraw(Canvas canvas) {
4739        restartMarqueeIfNeeded();
4740
4741        // Draw the background for this view
4742        super.onDraw(canvas);
4743
4744        final int compoundPaddingLeft = getCompoundPaddingLeft();
4745        final int compoundPaddingTop = getCompoundPaddingTop();
4746        final int compoundPaddingRight = getCompoundPaddingRight();
4747        final int compoundPaddingBottom = getCompoundPaddingBottom();
4748        final int scrollX = mScrollX;
4749        final int scrollY = mScrollY;
4750        final int right = mRight;
4751        final int left = mLeft;
4752        final int bottom = mBottom;
4753        final int top = mTop;
4754
4755        final Drawables dr = mDrawables;
4756        if (dr != null) {
4757            /*
4758             * Compound, not extended, because the icon is not clipped
4759             * if the text height is smaller.
4760             */
4761
4762            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
4763            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
4764
4765            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4766            // Make sure to update invalidateDrawable() when changing this code.
4767            if (dr.mDrawableLeft != null) {
4768                canvas.save();
4769                canvas.translate(scrollX + mPaddingLeft,
4770                                 scrollY + compoundPaddingTop +
4771                                 (vspace - dr.mDrawableHeightLeft) / 2);
4772                dr.mDrawableLeft.draw(canvas);
4773                canvas.restore();
4774            }
4775
4776            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4777            // Make sure to update invalidateDrawable() when changing this code.
4778            if (dr.mDrawableRight != null) {
4779                canvas.save();
4780                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
4781                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
4782                dr.mDrawableRight.draw(canvas);
4783                canvas.restore();
4784            }
4785
4786            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4787            // Make sure to update invalidateDrawable() when changing this code.
4788            if (dr.mDrawableTop != null) {
4789                canvas.save();
4790                canvas.translate(scrollX + compoundPaddingLeft +
4791                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
4792                dr.mDrawableTop.draw(canvas);
4793                canvas.restore();
4794            }
4795
4796            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4797            // Make sure to update invalidateDrawable() when changing this code.
4798            if (dr.mDrawableBottom != null) {
4799                canvas.save();
4800                canvas.translate(scrollX + compoundPaddingLeft +
4801                        (hspace - dr.mDrawableWidthBottom) / 2,
4802                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
4803                dr.mDrawableBottom.draw(canvas);
4804                canvas.restore();
4805            }
4806        }
4807
4808        int color = mCurTextColor;
4809
4810        if (mLayout == null) {
4811            assumeLayout();
4812        }
4813
4814        Layout layout = mLayout;
4815
4816        if (mHint != null && mText.length() == 0) {
4817            if (mHintTextColor != null) {
4818                color = mCurHintTextColor;
4819            }
4820
4821            layout = mHintLayout;
4822        }
4823
4824        mTextPaint.setColor(color);
4825        mTextPaint.drawableState = getDrawableState();
4826
4827        canvas.save();
4828        /*  Would be faster if we didn't have to do this. Can we chop the
4829            (displayable) text so that we don't need to do this ever?
4830        */
4831
4832        int extendedPaddingTop = getExtendedPaddingTop();
4833        int extendedPaddingBottom = getExtendedPaddingBottom();
4834
4835        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4836        final int maxScrollY = mLayout.getHeight() - vspace;
4837
4838        float clipLeft = compoundPaddingLeft + scrollX;
4839        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
4840        float clipRight = right - left - compoundPaddingRight + scrollX;
4841        float clipBottom = bottom - top + scrollY -
4842                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
4843
4844        if (mShadowRadius != 0) {
4845            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
4846            clipRight += Math.max(0, mShadowDx + mShadowRadius);
4847
4848            clipTop += Math.min(0, mShadowDy - mShadowRadius);
4849            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
4850        }
4851
4852        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
4853
4854        int voffsetText = 0;
4855        int voffsetCursor = 0;
4856
4857        // translate in by our padding
4858        /* shortcircuit calling getVerticaOffset() */
4859        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4860            voffsetText = getVerticalOffset(false);
4861            voffsetCursor = getVerticalOffset(true);
4862        }
4863        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
4864
4865        final int layoutDirection = getResolvedLayoutDirection();
4866        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
4867        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
4868                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
4869            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
4870                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
4871                canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft -
4872                        getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f);
4873            }
4874
4875            if (mMarquee != null && mMarquee.isRunning()) {
4876                canvas.translate(-mMarquee.mScroll, 0.0f);
4877            }
4878        }
4879
4880        final int cursorOffsetVertical = voffsetCursor - voffsetText;
4881
4882        Path highlight = getUpdatedHighlightPath();
4883        if (mEditor != null) {
4884            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
4885        } else {
4886            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4887        }
4888
4889        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
4890            canvas.translate((int) mMarquee.getGhostOffset(), 0.0f);
4891            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4892        }
4893
4894        canvas.restore();
4895    }
4896
4897    @Override
4898    public void getFocusedRect(Rect r) {
4899        if (mLayout == null) {
4900            super.getFocusedRect(r);
4901            return;
4902        }
4903
4904        int selEnd = getSelectionEnd();
4905        if (selEnd < 0) {
4906            super.getFocusedRect(r);
4907            return;
4908        }
4909
4910        int selStart = getSelectionStart();
4911        if (selStart < 0 || selStart >= selEnd) {
4912            int line = mLayout.getLineForOffset(selEnd);
4913            r.top = mLayout.getLineTop(line);
4914            r.bottom = mLayout.getLineBottom(line);
4915            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
4916            r.right = r.left + 4;
4917        } else {
4918            int lineStart = mLayout.getLineForOffset(selStart);
4919            int lineEnd = mLayout.getLineForOffset(selEnd);
4920            r.top = mLayout.getLineTop(lineStart);
4921            r.bottom = mLayout.getLineBottom(lineEnd);
4922            if (lineStart == lineEnd) {
4923                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
4924                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
4925            } else {
4926                // Selection extends across multiple lines -- make the focused
4927                // rect cover the entire width.
4928                if (mHighlightPathBogus) {
4929                    if (mHighlightPath == null) mHighlightPath = new Path();
4930                    mHighlightPath.reset();
4931                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4932                    mHighlightPathBogus = false;
4933                }
4934                synchronized (TEMP_RECTF) {
4935                    mHighlightPath.computeBounds(TEMP_RECTF, true);
4936                    r.left = (int)TEMP_RECTF.left-1;
4937                    r.right = (int)TEMP_RECTF.right+1;
4938                }
4939            }
4940        }
4941
4942        // Adjust for padding and gravity.
4943        int paddingLeft = getCompoundPaddingLeft();
4944        int paddingTop = getExtendedPaddingTop();
4945        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4946            paddingTop += getVerticalOffset(false);
4947        }
4948        r.offset(paddingLeft, paddingTop);
4949        int paddingBottom = getExtendedPaddingBottom();
4950        r.bottom += paddingBottom;
4951    }
4952
4953    /**
4954     * Return the number of lines of text, or 0 if the internal Layout has not
4955     * been built.
4956     */
4957    public int getLineCount() {
4958        return mLayout != null ? mLayout.getLineCount() : 0;
4959    }
4960
4961    /**
4962     * Return the baseline for the specified line (0...getLineCount() - 1)
4963     * If bounds is not null, return the top, left, right, bottom extents
4964     * of the specified line in it. If the internal Layout has not been built,
4965     * return 0 and set bounds to (0, 0, 0, 0)
4966     * @param line which line to examine (0..getLineCount() - 1)
4967     * @param bounds Optional. If not null, it returns the extent of the line
4968     * @return the Y-coordinate of the baseline
4969     */
4970    public int getLineBounds(int line, Rect bounds) {
4971        if (mLayout == null) {
4972            if (bounds != null) {
4973                bounds.set(0, 0, 0, 0);
4974            }
4975            return 0;
4976        }
4977        else {
4978            int baseline = mLayout.getLineBounds(line, bounds);
4979
4980            int voffset = getExtendedPaddingTop();
4981            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4982                voffset += getVerticalOffset(true);
4983            }
4984            if (bounds != null) {
4985                bounds.offset(getCompoundPaddingLeft(), voffset);
4986            }
4987            return baseline + voffset;
4988        }
4989    }
4990
4991    @Override
4992    public int getBaseline() {
4993        if (mLayout == null) {
4994            return super.getBaseline();
4995        }
4996
4997        int voffset = 0;
4998        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4999            voffset = getVerticalOffset(true);
5000        }
5001
5002        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
5003    }
5004
5005    /**
5006     * @hide
5007     */
5008    @Override
5009    protected int getFadeTop(boolean offsetRequired) {
5010        if (mLayout == null) return 0;
5011
5012        int voffset = 0;
5013        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5014            voffset = getVerticalOffset(true);
5015        }
5016
5017        if (offsetRequired) voffset += getTopPaddingOffset();
5018
5019        return getExtendedPaddingTop() + voffset;
5020    }
5021
5022    /**
5023     * @hide
5024     */
5025    @Override
5026    protected int getFadeHeight(boolean offsetRequired) {
5027        return mLayout != null ? mLayout.getHeight() : 0;
5028    }
5029
5030    @Override
5031    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
5032        if (keyCode == KeyEvent.KEYCODE_BACK) {
5033            boolean isInSelectionMode = mEditor != null && mEditor.mSelectionActionMode != null;
5034
5035            if (isInSelectionMode) {
5036                if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
5037                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5038                    if (state != null) {
5039                        state.startTracking(event, this);
5040                    }
5041                    return true;
5042                } else if (event.getAction() == KeyEvent.ACTION_UP) {
5043                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5044                    if (state != null) {
5045                        state.handleUpEvent(event);
5046                    }
5047                    if (event.isTracking() && !event.isCanceled()) {
5048                        stopSelectionActionMode();
5049                        return true;
5050                    }
5051                }
5052            }
5053        }
5054        return super.onKeyPreIme(keyCode, event);
5055    }
5056
5057    @Override
5058    public boolean onKeyDown(int keyCode, KeyEvent event) {
5059        int which = doKeyDown(keyCode, event, null);
5060        if (which == 0) {
5061            // Go through default dispatching.
5062            return super.onKeyDown(keyCode, event);
5063        }
5064
5065        return true;
5066    }
5067
5068    @Override
5069    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
5070        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
5071
5072        int which = doKeyDown(keyCode, down, event);
5073        if (which == 0) {
5074            // Go through default dispatching.
5075            return super.onKeyMultiple(keyCode, repeatCount, event);
5076        }
5077        if (which == -1) {
5078            // Consumed the whole thing.
5079            return true;
5080        }
5081
5082        repeatCount--;
5083
5084        // We are going to dispatch the remaining events to either the input
5085        // or movement method.  To do this, we will just send a repeated stream
5086        // of down and up events until we have done the complete repeatCount.
5087        // It would be nice if those interfaces had an onKeyMultiple() method,
5088        // but adding that is a more complicated change.
5089        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
5090        if (which == 1) {
5091            // mEditor and mEditor.mInput are not null from doKeyDown
5092            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5093            while (--repeatCount > 0) {
5094                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
5095                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5096            }
5097            hideErrorIfUnchanged();
5098
5099        } else if (which == 2) {
5100            // mMovement is not null from doKeyDown
5101            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5102            while (--repeatCount > 0) {
5103                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
5104                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5105            }
5106        }
5107
5108        return true;
5109    }
5110
5111    /**
5112     * Returns true if pressing ENTER in this field advances focus instead
5113     * of inserting the character.  This is true mostly in single-line fields,
5114     * but also in mail addresses and subjects which will display on multiple
5115     * lines but where it doesn't make sense to insert newlines.
5116     */
5117    private boolean shouldAdvanceFocusOnEnter() {
5118        if (getKeyListener() == null) {
5119            return false;
5120        }
5121
5122        if (mSingleLine) {
5123            return true;
5124        }
5125
5126        if (mEditor != null &&
5127                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5128            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5129            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
5130                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
5131                return true;
5132            }
5133        }
5134
5135        return false;
5136    }
5137
5138    /**
5139     * Returns true if pressing TAB in this field advances focus instead
5140     * of inserting the character.  Insert tabs only in multi-line editors.
5141     */
5142    private boolean shouldAdvanceFocusOnTab() {
5143        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
5144                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5145            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5146            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
5147                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
5148                return false;
5149            }
5150        }
5151        return true;
5152    }
5153
5154    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
5155        if (!isEnabled()) {
5156            return 0;
5157        }
5158
5159        switch (keyCode) {
5160            case KeyEvent.KEYCODE_ENTER:
5161                if (event.hasNoModifiers()) {
5162                    // When mInputContentType is set, we know that we are
5163                    // running in a "modern" cupcake environment, so don't need
5164                    // to worry about the application trying to capture
5165                    // enter key events.
5166                    if (mEditor != null && mEditor.mInputContentType != null) {
5167                        // If there is an action listener, given them a
5168                        // chance to consume the event.
5169                        if (mEditor.mInputContentType.onEditorActionListener != null &&
5170                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5171                                this, EditorInfo.IME_NULL, event)) {
5172                            mEditor.mInputContentType.enterDown = true;
5173                            // We are consuming the enter key for them.
5174                            return -1;
5175                        }
5176                    }
5177
5178                    // If our editor should move focus when enter is pressed, or
5179                    // this is a generated event from an IME action button, then
5180                    // don't let it be inserted into the text.
5181                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5182                            || shouldAdvanceFocusOnEnter()) {
5183                        if (hasOnClickListeners()) {
5184                            return 0;
5185                        }
5186                        return -1;
5187                    }
5188                }
5189                break;
5190
5191            case KeyEvent.KEYCODE_DPAD_CENTER:
5192                if (event.hasNoModifiers()) {
5193                    if (shouldAdvanceFocusOnEnter()) {
5194                        return 0;
5195                    }
5196                }
5197                break;
5198
5199            case KeyEvent.KEYCODE_TAB:
5200                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
5201                    if (shouldAdvanceFocusOnTab()) {
5202                        return 0;
5203                    }
5204                }
5205                break;
5206
5207                // Has to be done on key down (and not on key up) to correctly be intercepted.
5208            case KeyEvent.KEYCODE_BACK:
5209                if (mEditor != null && mEditor.mSelectionActionMode != null) {
5210                    stopSelectionActionMode();
5211                    return -1;
5212                }
5213                break;
5214        }
5215
5216        if (mEditor != null && mEditor.mKeyListener != null) {
5217            resetErrorChangedFlag();
5218
5219            boolean doDown = true;
5220            if (otherEvent != null) {
5221                try {
5222                    beginBatchEdit();
5223                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
5224                            otherEvent);
5225                    hideErrorIfUnchanged();
5226                    doDown = false;
5227                    if (handled) {
5228                        return -1;
5229                    }
5230                } catch (AbstractMethodError e) {
5231                    // onKeyOther was added after 1.0, so if it isn't
5232                    // implemented we need to try to dispatch as a regular down.
5233                } finally {
5234                    endBatchEdit();
5235                }
5236            }
5237
5238            if (doDown) {
5239                beginBatchEdit();
5240                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
5241                        keyCode, event);
5242                endBatchEdit();
5243                hideErrorIfUnchanged();
5244                if (handled) return 1;
5245            }
5246        }
5247
5248        // bug 650865: sometimes we get a key event before a layout.
5249        // don't try to move around if we don't know the layout.
5250
5251        if (mMovement != null && mLayout != null) {
5252            boolean doDown = true;
5253            if (otherEvent != null) {
5254                try {
5255                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
5256                            otherEvent);
5257                    doDown = false;
5258                    if (handled) {
5259                        return -1;
5260                    }
5261                } catch (AbstractMethodError e) {
5262                    // onKeyOther was added after 1.0, so if it isn't
5263                    // implemented we need to try to dispatch as a regular down.
5264                }
5265            }
5266            if (doDown) {
5267                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
5268                    return 2;
5269            }
5270        }
5271
5272        return 0;
5273    }
5274
5275    /**
5276     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
5277     * can be recorded.
5278     * @hide
5279     */
5280    public void resetErrorChangedFlag() {
5281        /*
5282         * Keep track of what the error was before doing the input
5283         * so that if an input filter changed the error, we leave
5284         * that error showing.  Otherwise, we take down whatever
5285         * error was showing when the user types something.
5286         */
5287        if (mEditor != null) mEditor.mErrorWasChanged = false;
5288    }
5289
5290    /**
5291     * @hide
5292     */
5293    public void hideErrorIfUnchanged() {
5294        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
5295            setError(null, null);
5296        }
5297    }
5298
5299    @Override
5300    public boolean onKeyUp(int keyCode, KeyEvent event) {
5301        if (!isEnabled()) {
5302            return super.onKeyUp(keyCode, event);
5303        }
5304
5305        switch (keyCode) {
5306            case KeyEvent.KEYCODE_DPAD_CENTER:
5307                if (event.hasNoModifiers()) {
5308                    /*
5309                     * If there is a click listener, just call through to
5310                     * super, which will invoke it.
5311                     *
5312                     * If there isn't a click listener, try to show the soft
5313                     * input method.  (It will also
5314                     * call performClick(), but that won't do anything in
5315                     * this case.)
5316                     */
5317                    if (!hasOnClickListeners()) {
5318                        if (mMovement != null && mText instanceof Editable
5319                                && mLayout != null && onCheckIsTextEditor()) {
5320                            InputMethodManager imm = InputMethodManager.peekInstance();
5321                            viewClicked(imm);
5322                            if (imm != null && getShowSoftInputOnFocus()) {
5323                                imm.showSoftInput(this, 0);
5324                            }
5325                        }
5326                    }
5327                }
5328                return super.onKeyUp(keyCode, event);
5329
5330            case KeyEvent.KEYCODE_ENTER:
5331                if (event.hasNoModifiers()) {
5332                    if (mEditor != null && mEditor.mInputContentType != null
5333                            && mEditor.mInputContentType.onEditorActionListener != null
5334                            && mEditor.mInputContentType.enterDown) {
5335                        mEditor.mInputContentType.enterDown = false;
5336                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5337                                this, EditorInfo.IME_NULL, event)) {
5338                            return true;
5339                        }
5340                    }
5341
5342                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5343                            || shouldAdvanceFocusOnEnter()) {
5344                        /*
5345                         * If there is a click listener, just call through to
5346                         * super, which will invoke it.
5347                         *
5348                         * If there isn't a click listener, try to advance focus,
5349                         * but still call through to super, which will reset the
5350                         * pressed state and longpress state.  (It will also
5351                         * call performClick(), but that won't do anything in
5352                         * this case.)
5353                         */
5354                        if (!hasOnClickListeners()) {
5355                            View v = focusSearch(FOCUS_DOWN);
5356
5357                            if (v != null) {
5358                                if (!v.requestFocus(FOCUS_DOWN)) {
5359                                    throw new IllegalStateException(
5360                                            "focus search returned a view " +
5361                                            "that wasn't able to take focus!");
5362                                }
5363
5364                                /*
5365                                 * Return true because we handled the key; super
5366                                 * will return false because there was no click
5367                                 * listener.
5368                                 */
5369                                super.onKeyUp(keyCode, event);
5370                                return true;
5371                            } else if ((event.getFlags()
5372                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
5373                                // No target for next focus, but make sure the IME
5374                                // if this came from it.
5375                                InputMethodManager imm = InputMethodManager.peekInstance();
5376                                if (imm != null && imm.isActive(this)) {
5377                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
5378                                }
5379                            }
5380                        }
5381                    }
5382                    return super.onKeyUp(keyCode, event);
5383                }
5384                break;
5385        }
5386
5387        if (mEditor != null && mEditor.mKeyListener != null)
5388            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
5389                return true;
5390
5391        if (mMovement != null && mLayout != null)
5392            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
5393                return true;
5394
5395        return super.onKeyUp(keyCode, event);
5396    }
5397
5398    @Override
5399    public boolean onCheckIsTextEditor() {
5400        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
5401    }
5402
5403    @Override
5404    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
5405        if (onCheckIsTextEditor() && isEnabled()) {
5406            mEditor.createInputMethodStateIfNeeded();
5407            outAttrs.inputType = getInputType();
5408            if (mEditor.mInputContentType != null) {
5409                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
5410                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
5411                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
5412                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
5413                outAttrs.extras = mEditor.mInputContentType.extras;
5414            } else {
5415                outAttrs.imeOptions = EditorInfo.IME_NULL;
5416            }
5417            if (focusSearch(FOCUS_DOWN) != null) {
5418                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
5419            }
5420            if (focusSearch(FOCUS_UP) != null) {
5421                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
5422            }
5423            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
5424                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
5425                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
5426                    // An action has not been set, but the enter key will move to
5427                    // the next focus, so set the action to that.
5428                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
5429                } else {
5430                    // An action has not been set, and there is no focus to move
5431                    // to, so let's just supply a "done" action.
5432                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
5433                }
5434                if (!shouldAdvanceFocusOnEnter()) {
5435                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5436                }
5437            }
5438            if (isMultilineInputType(outAttrs.inputType)) {
5439                // Multi-line text editors should always show an enter key.
5440                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5441            }
5442            outAttrs.hintText = mHint;
5443            if (mText instanceof Editable) {
5444                InputConnection ic = new EditableInputConnection(this);
5445                outAttrs.initialSelStart = getSelectionStart();
5446                outAttrs.initialSelEnd = getSelectionEnd();
5447                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
5448                return ic;
5449            }
5450        }
5451        return null;
5452    }
5453
5454    /**
5455     * If this TextView contains editable content, extract a portion of it
5456     * based on the information in <var>request</var> in to <var>outText</var>.
5457     * @return Returns true if the text was successfully extracted, else false.
5458     */
5459    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
5460        createEditorIfNeeded();
5461        return mEditor.extractText(request, outText);
5462    }
5463
5464    /**
5465     * This is used to remove all style-impacting spans from text before new
5466     * extracted text is being replaced into it, so that we don't have any
5467     * lingering spans applied during the replace.
5468     */
5469    static void removeParcelableSpans(Spannable spannable, int start, int end) {
5470        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
5471        int i = spans.length;
5472        while (i > 0) {
5473            i--;
5474            spannable.removeSpan(spans[i]);
5475        }
5476    }
5477
5478    /**
5479     * Apply to this text view the given extracted text, as previously
5480     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
5481     */
5482    public void setExtractedText(ExtractedText text) {
5483        Editable content = getEditableText();
5484        if (text.text != null) {
5485            if (content == null) {
5486                setText(text.text, TextView.BufferType.EDITABLE);
5487            } else if (text.partialStartOffset < 0) {
5488                removeParcelableSpans(content, 0, content.length());
5489                content.replace(0, content.length(), text.text);
5490            } else {
5491                final int N = content.length();
5492                int start = text.partialStartOffset;
5493                if (start > N) start = N;
5494                int end = text.partialEndOffset;
5495                if (end > N) end = N;
5496                removeParcelableSpans(content, start, end);
5497                content.replace(start, end, text.text);
5498            }
5499        }
5500
5501        // Now set the selection position...  make sure it is in range, to
5502        // avoid crashes.  If this is a partial update, it is possible that
5503        // the underlying text may have changed, causing us problems here.
5504        // Also we just don't want to trust clients to do the right thing.
5505        Spannable sp = (Spannable)getText();
5506        final int N = sp.length();
5507        int start = text.selectionStart;
5508        if (start < 0) start = 0;
5509        else if (start > N) start = N;
5510        int end = text.selectionEnd;
5511        if (end < 0) end = 0;
5512        else if (end > N) end = N;
5513        Selection.setSelection(sp, start, end);
5514
5515        // Finally, update the selection mode.
5516        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
5517            MetaKeyKeyListener.startSelecting(this, sp);
5518        } else {
5519            MetaKeyKeyListener.stopSelecting(this, sp);
5520        }
5521    }
5522
5523    /**
5524     * @hide
5525     */
5526    public void setExtracting(ExtractedTextRequest req) {
5527        if (mEditor.mInputMethodState != null) {
5528            mEditor.mInputMethodState.mExtractedTextRequest = req;
5529        }
5530        // This would stop a possible selection mode, but no such mode is started in case
5531        // extracted mode will start. Some text is selected though, and will trigger an action mode
5532        // in the extracted view.
5533        mEditor.hideControllers();
5534    }
5535
5536    /**
5537     * Called by the framework in response to a text completion from
5538     * the current input method, provided by it calling
5539     * {@link InputConnection#commitCompletion
5540     * InputConnection.commitCompletion()}.  The default implementation does
5541     * nothing; text views that are supporting auto-completion should override
5542     * this to do their desired behavior.
5543     *
5544     * @param text The auto complete text the user has selected.
5545     */
5546    public void onCommitCompletion(CompletionInfo text) {
5547        // intentionally empty
5548    }
5549
5550    /**
5551     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
5552     * a dictionnary) from the current input method, provided by it calling
5553     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
5554     * implementation flashes the background of the corrected word to provide feedback to the user.
5555     *
5556     * @param info The auto correct info about the text that was corrected.
5557     */
5558    public void onCommitCorrection(CorrectionInfo info) {
5559        if (mEditor != null) mEditor.onCommitCorrection(info);
5560    }
5561
5562    public void beginBatchEdit() {
5563        if (mEditor != null) mEditor.beginBatchEdit();
5564    }
5565
5566    public void endBatchEdit() {
5567        if (mEditor != null) mEditor.endBatchEdit();
5568    }
5569
5570    /**
5571     * Called by the framework in response to a request to begin a batch
5572     * of edit operations through a call to link {@link #beginBatchEdit()}.
5573     */
5574    public void onBeginBatchEdit() {
5575        // intentionally empty
5576    }
5577
5578    /**
5579     * Called by the framework in response to a request to end a batch
5580     * of edit operations through a call to link {@link #endBatchEdit}.
5581     */
5582    public void onEndBatchEdit() {
5583        // intentionally empty
5584    }
5585
5586    /**
5587     * Called by the framework in response to a private command from the
5588     * current method, provided by it calling
5589     * {@link InputConnection#performPrivateCommand
5590     * InputConnection.performPrivateCommand()}.
5591     *
5592     * @param action The action name of the command.
5593     * @param data Any additional data for the command.  This may be null.
5594     * @return Return true if you handled the command, else false.
5595     */
5596    public boolean onPrivateIMECommand(String action, Bundle data) {
5597        return false;
5598    }
5599
5600    private void nullLayouts() {
5601        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
5602            mSavedLayout = (BoringLayout) mLayout;
5603        }
5604        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
5605            mSavedHintLayout = (BoringLayout) mHintLayout;
5606        }
5607
5608        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
5609
5610        mBoring = mHintBoring = null;
5611
5612        // Since it depends on the value of mLayout
5613        if (mEditor != null) mEditor.prepareCursorControllers();
5614    }
5615
5616    /**
5617     * Make a new Layout based on the already-measured size of the view,
5618     * on the assumption that it was measured correctly at some point.
5619     */
5620    private void assumeLayout() {
5621        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5622
5623        if (width < 1) {
5624            width = 0;
5625        }
5626
5627        int physicalWidth = width;
5628
5629        if (mHorizontallyScrolling) {
5630            width = VERY_WIDE;
5631        }
5632
5633        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
5634                      physicalWidth, false);
5635    }
5636
5637    /** @hide */
5638    @Override
5639    public void onResolvedLayoutDirectionReset() {
5640        if (mLayoutAlignment != null) {
5641            int resolvedTextAlignment = getResolvedTextAlignment();
5642            if (resolvedTextAlignment == TEXT_ALIGNMENT_VIEW_START ||
5643                 resolvedTextAlignment == TEXT_ALIGNMENT_VIEW_END) {
5644                mLayoutAlignment = null;
5645            }
5646        }
5647    }
5648
5649    private Layout.Alignment getLayoutAlignment() {
5650        if (mLayoutAlignment == null) {
5651            int textAlign = getResolvedTextAlignment();
5652            switch (textAlign) {
5653                case TEXT_ALIGNMENT_GRAVITY:
5654                    switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
5655                        case Gravity.START:
5656                            mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5657                            break;
5658                        case Gravity.END:
5659                            mLayoutAlignment = Layout.Alignment.ALIGN_OPPOSITE;
5660                            break;
5661                        case Gravity.LEFT:
5662                            mLayoutAlignment = Layout.Alignment.ALIGN_LEFT;
5663                            break;
5664                        case Gravity.RIGHT:
5665                            mLayoutAlignment = Layout.Alignment.ALIGN_RIGHT;
5666                            break;
5667                        case Gravity.CENTER_HORIZONTAL:
5668                            mLayoutAlignment = Layout.Alignment.ALIGN_CENTER;
5669                            break;
5670                        default:
5671                            mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5672                            break;
5673                    }
5674                    break;
5675                case TEXT_ALIGNMENT_TEXT_START:
5676                    mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5677                    break;
5678                case TEXT_ALIGNMENT_TEXT_END:
5679                    mLayoutAlignment = Layout.Alignment.ALIGN_OPPOSITE;
5680                    break;
5681                case TEXT_ALIGNMENT_CENTER:
5682                    mLayoutAlignment = Layout.Alignment.ALIGN_CENTER;
5683                    break;
5684                case TEXT_ALIGNMENT_VIEW_START:
5685                    mLayoutAlignment = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
5686                            Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
5687                    break;
5688                case TEXT_ALIGNMENT_VIEW_END:
5689                    mLayoutAlignment = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
5690                            Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
5691                    break;
5692                case TEXT_ALIGNMENT_INHERIT:
5693                    // This should never happen as we have already resolved the text alignment
5694                    // but better safe than sorry so we just fall through
5695                default:
5696                    mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5697                    break;
5698            }
5699        }
5700        return mLayoutAlignment;
5701    }
5702
5703    /**
5704     * The width passed in is now the desired layout width,
5705     * not the full view width with padding.
5706     * {@hide}
5707     */
5708    protected void makeNewLayout(int wantWidth, int hintWidth,
5709                                 BoringLayout.Metrics boring,
5710                                 BoringLayout.Metrics hintBoring,
5711                                 int ellipsisWidth, boolean bringIntoView) {
5712        stopMarquee();
5713
5714        // Update "old" cached values
5715        mOldMaximum = mMaximum;
5716        mOldMaxMode = mMaxMode;
5717
5718        mHighlightPathBogus = true;
5719
5720        if (wantWidth < 0) {
5721            wantWidth = 0;
5722        }
5723        if (hintWidth < 0) {
5724            hintWidth = 0;
5725        }
5726
5727        Layout.Alignment alignment = getLayoutAlignment();
5728        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
5729        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
5730                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
5731        TruncateAt effectiveEllipsize = mEllipsize;
5732        if (mEllipsize == TruncateAt.MARQUEE &&
5733                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5734            effectiveEllipsize = TruncateAt.END_SMALL;
5735        }
5736
5737        if (mTextDir == null) {
5738            resolveTextDirection();
5739        }
5740
5741        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
5742                effectiveEllipsize, effectiveEllipsize == mEllipsize);
5743        if (switchEllipsize) {
5744            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
5745                    TruncateAt.END : TruncateAt.MARQUEE;
5746            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
5747                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
5748        }
5749
5750        shouldEllipsize = mEllipsize != null;
5751        mHintLayout = null;
5752
5753        if (mHint != null) {
5754            if (shouldEllipsize) hintWidth = wantWidth;
5755
5756            if (hintBoring == UNKNOWN_BORING) {
5757                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
5758                                                   mHintBoring);
5759                if (hintBoring != null) {
5760                    mHintBoring = hintBoring;
5761                }
5762            }
5763
5764            if (hintBoring != null) {
5765                if (hintBoring.width <= hintWidth &&
5766                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
5767                    if (mSavedHintLayout != null) {
5768                        mHintLayout = mSavedHintLayout.
5769                                replaceOrMake(mHint, mTextPaint,
5770                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5771                                hintBoring, mIncludePad);
5772                    } else {
5773                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5774                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5775                                hintBoring, mIncludePad);
5776                    }
5777
5778                    mSavedHintLayout = (BoringLayout) mHintLayout;
5779                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
5780                    if (mSavedHintLayout != null) {
5781                        mHintLayout = mSavedHintLayout.
5782                                replaceOrMake(mHint, mTextPaint,
5783                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5784                                hintBoring, mIncludePad, mEllipsize,
5785                                ellipsisWidth);
5786                    } else {
5787                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5788                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5789                                hintBoring, mIncludePad, mEllipsize,
5790                                ellipsisWidth);
5791                    }
5792                } else if (shouldEllipsize) {
5793                    mHintLayout = new StaticLayout(mHint,
5794                                0, mHint.length(),
5795                                mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5796                                mSpacingAdd, mIncludePad, mEllipsize,
5797                                ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5798                } else {
5799                    mHintLayout = new StaticLayout(mHint, mTextPaint,
5800                            hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5801                            mIncludePad);
5802                }
5803            } else if (shouldEllipsize) {
5804                mHintLayout = new StaticLayout(mHint,
5805                            0, mHint.length(),
5806                            mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5807                            mSpacingAdd, mIncludePad, mEllipsize,
5808                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5809            } else {
5810                mHintLayout = new StaticLayout(mHint, mTextPaint,
5811                        hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5812                        mIncludePad);
5813            }
5814        }
5815
5816        if (bringIntoView) {
5817            registerForPreDraw();
5818        }
5819
5820        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5821            if (!compressText(ellipsisWidth)) {
5822                final int height = mLayoutParams.height;
5823                // If the size of the view does not depend on the size of the text, try to
5824                // start the marquee immediately
5825                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
5826                    startMarquee();
5827                } else {
5828                    // Defer the start of the marquee until we know our width (see setFrame())
5829                    mRestartMarquee = true;
5830                }
5831            }
5832        }
5833
5834        // CursorControllers need a non-null mLayout
5835        if (mEditor != null) mEditor.prepareCursorControllers();
5836    }
5837
5838    private Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
5839            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
5840            boolean useSaved) {
5841        Layout result = null;
5842        if (mText instanceof Spannable) {
5843            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
5844                    alignment, mTextDir, mSpacingMult,
5845                    mSpacingAdd, mIncludePad, getKeyListener() == null ? effectiveEllipsize : null,
5846                            ellipsisWidth);
5847        } else {
5848            if (boring == UNKNOWN_BORING) {
5849                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
5850                if (boring != null) {
5851                    mBoring = boring;
5852                }
5853            }
5854
5855            if (boring != null) {
5856                if (boring.width <= wantWidth &&
5857                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
5858                    if (useSaved && mSavedLayout != null) {
5859                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
5860                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5861                                boring, mIncludePad);
5862                    } else {
5863                        result = BoringLayout.make(mTransformed, mTextPaint,
5864                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5865                                boring, mIncludePad);
5866                    }
5867
5868                    if (useSaved) {
5869                        mSavedLayout = (BoringLayout) result;
5870                    }
5871                } else if (shouldEllipsize && boring.width <= wantWidth) {
5872                    if (useSaved && mSavedLayout != null) {
5873                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
5874                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5875                                boring, mIncludePad, effectiveEllipsize,
5876                                ellipsisWidth);
5877                    } else {
5878                        result = BoringLayout.make(mTransformed, mTextPaint,
5879                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5880                                boring, mIncludePad, effectiveEllipsize,
5881                                ellipsisWidth);
5882                    }
5883                } else if (shouldEllipsize) {
5884                    result = new StaticLayout(mTransformed,
5885                            0, mTransformed.length(),
5886                            mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
5887                            mSpacingAdd, mIncludePad, effectiveEllipsize,
5888                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5889                } else {
5890                    result = new StaticLayout(mTransformed, mTextPaint,
5891                            wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5892                            mIncludePad);
5893                }
5894            } else if (shouldEllipsize) {
5895                result = new StaticLayout(mTransformed,
5896                        0, mTransformed.length(),
5897                        mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
5898                        mSpacingAdd, mIncludePad, effectiveEllipsize,
5899                        ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5900            } else {
5901                result = new StaticLayout(mTransformed, mTextPaint,
5902                        wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5903                        mIncludePad);
5904            }
5905        }
5906        return result;
5907    }
5908
5909    private boolean compressText(float width) {
5910        if (isHardwareAccelerated()) return false;
5911
5912        // Only compress the text if it hasn't been compressed by the previous pass
5913        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
5914                mTextPaint.getTextScaleX() == 1.0f) {
5915            final float textWidth = mLayout.getLineWidth(0);
5916            final float overflow = (textWidth + 1.0f - width) / width;
5917            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
5918                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
5919                post(new Runnable() {
5920                    public void run() {
5921                        requestLayout();
5922                    }
5923                });
5924                return true;
5925            }
5926        }
5927
5928        return false;
5929    }
5930
5931    private static int desired(Layout layout) {
5932        int n = layout.getLineCount();
5933        CharSequence text = layout.getText();
5934        float max = 0;
5935
5936        // if any line was wrapped, we can't use it.
5937        // but it's ok for the last line not to have a newline
5938
5939        for (int i = 0; i < n - 1; i++) {
5940            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
5941                return -1;
5942        }
5943
5944        for (int i = 0; i < n; i++) {
5945            max = Math.max(max, layout.getLineWidth(i));
5946        }
5947
5948        return (int) FloatMath.ceil(max);
5949    }
5950
5951    /**
5952     * Set whether the TextView includes extra top and bottom padding to make
5953     * room for accents that go above the normal ascent and descent.
5954     * The default is true.
5955     *
5956     * @see #getIncludeFontPadding()
5957     *
5958     * @attr ref android.R.styleable#TextView_includeFontPadding
5959     */
5960    public void setIncludeFontPadding(boolean includepad) {
5961        if (mIncludePad != includepad) {
5962            mIncludePad = includepad;
5963
5964            if (mLayout != null) {
5965                nullLayouts();
5966                requestLayout();
5967                invalidate();
5968            }
5969        }
5970    }
5971
5972    /**
5973     * Gets whether the TextView includes extra top and bottom padding to make
5974     * room for accents that go above the normal ascent and descent.
5975     *
5976     * @see #setIncludeFontPadding(boolean)
5977     *
5978     * @attr ref android.R.styleable#TextView_includeFontPadding
5979     */
5980    public boolean getIncludeFontPadding() {
5981        return mIncludePad;
5982    }
5983
5984    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
5985
5986    @Override
5987    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
5988        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
5989        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
5990        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
5991        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
5992
5993        int width;
5994        int height;
5995
5996        BoringLayout.Metrics boring = UNKNOWN_BORING;
5997        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
5998
5999        if (mTextDir == null) {
6000            resolveTextDirection();
6001        }
6002
6003        int des = -1;
6004        boolean fromexisting = false;
6005
6006        if (widthMode == MeasureSpec.EXACTLY) {
6007            // Parent has told us how big to be. So be it.
6008            width = widthSize;
6009        } else {
6010            if (mLayout != null && mEllipsize == null) {
6011                des = desired(mLayout);
6012            }
6013
6014            if (des < 0) {
6015                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6016                if (boring != null) {
6017                    mBoring = boring;
6018                }
6019            } else {
6020                fromexisting = true;
6021            }
6022
6023            if (boring == null || boring == UNKNOWN_BORING) {
6024                if (des < 0) {
6025                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
6026                }
6027                width = des;
6028            } else {
6029                width = boring.width;
6030            }
6031
6032            final Drawables dr = mDrawables;
6033            if (dr != null) {
6034                width = Math.max(width, dr.mDrawableWidthTop);
6035                width = Math.max(width, dr.mDrawableWidthBottom);
6036            }
6037
6038            if (mHint != null) {
6039                int hintDes = -1;
6040                int hintWidth;
6041
6042                if (mHintLayout != null && mEllipsize == null) {
6043                    hintDes = desired(mHintLayout);
6044                }
6045
6046                if (hintDes < 0) {
6047                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
6048                    if (hintBoring != null) {
6049                        mHintBoring = hintBoring;
6050                    }
6051                }
6052
6053                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
6054                    if (hintDes < 0) {
6055                        hintDes = (int) FloatMath.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
6056                    }
6057                    hintWidth = hintDes;
6058                } else {
6059                    hintWidth = hintBoring.width;
6060                }
6061
6062                if (hintWidth > width) {
6063                    width = hintWidth;
6064                }
6065            }
6066
6067            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
6068
6069            if (mMaxWidthMode == EMS) {
6070                width = Math.min(width, mMaxWidth * getLineHeight());
6071            } else {
6072                width = Math.min(width, mMaxWidth);
6073            }
6074
6075            if (mMinWidthMode == EMS) {
6076                width = Math.max(width, mMinWidth * getLineHeight());
6077            } else {
6078                width = Math.max(width, mMinWidth);
6079            }
6080
6081            // Check against our minimum width
6082            width = Math.max(width, getSuggestedMinimumWidth());
6083
6084            if (widthMode == MeasureSpec.AT_MOST) {
6085                width = Math.min(widthSize, width);
6086            }
6087        }
6088
6089        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
6090        int unpaddedWidth = want;
6091
6092        if (mHorizontallyScrolling) want = VERY_WIDE;
6093
6094        int hintWant = want;
6095        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
6096
6097        if (mLayout == null) {
6098            makeNewLayout(want, hintWant, boring, hintBoring,
6099                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6100        } else {
6101            final boolean layoutChanged = (mLayout.getWidth() != want) ||
6102                    (hintWidth != hintWant) ||
6103                    (mLayout.getEllipsizedWidth() !=
6104                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
6105
6106            final boolean widthChanged = (mHint == null) &&
6107                    (mEllipsize == null) &&
6108                    (want > mLayout.getWidth()) &&
6109                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
6110
6111            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
6112
6113            if (layoutChanged || maximumChanged) {
6114                if (!maximumChanged && widthChanged) {
6115                    mLayout.increaseWidthTo(want);
6116                } else {
6117                    makeNewLayout(want, hintWant, boring, hintBoring,
6118                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6119                }
6120            } else {
6121                // Nothing has changed
6122            }
6123        }
6124
6125        if (heightMode == MeasureSpec.EXACTLY) {
6126            // Parent has told us how big to be. So be it.
6127            height = heightSize;
6128            mDesiredHeightAtMeasure = -1;
6129        } else {
6130            int desired = getDesiredHeight();
6131
6132            height = desired;
6133            mDesiredHeightAtMeasure = desired;
6134
6135            if (heightMode == MeasureSpec.AT_MOST) {
6136                height = Math.min(desired, heightSize);
6137            }
6138        }
6139
6140        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
6141        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
6142            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
6143        }
6144
6145        /*
6146         * We didn't let makeNewLayout() register to bring the cursor into view,
6147         * so do it here if there is any possibility that it is needed.
6148         */
6149        if (mMovement != null ||
6150            mLayout.getWidth() > unpaddedWidth ||
6151            mLayout.getHeight() > unpaddedHeight) {
6152            registerForPreDraw();
6153        } else {
6154            scrollTo(0, 0);
6155        }
6156
6157        setMeasuredDimension(width, height);
6158    }
6159
6160    private int getDesiredHeight() {
6161        return Math.max(
6162                getDesiredHeight(mLayout, true),
6163                getDesiredHeight(mHintLayout, mEllipsize != null));
6164    }
6165
6166    private int getDesiredHeight(Layout layout, boolean cap) {
6167        if (layout == null) {
6168            return 0;
6169        }
6170
6171        int linecount = layout.getLineCount();
6172        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
6173        int desired = layout.getLineTop(linecount);
6174
6175        final Drawables dr = mDrawables;
6176        if (dr != null) {
6177            desired = Math.max(desired, dr.mDrawableHeightLeft);
6178            desired = Math.max(desired, dr.mDrawableHeightRight);
6179        }
6180
6181        desired += pad;
6182
6183        if (mMaxMode == LINES) {
6184            /*
6185             * Don't cap the hint to a certain number of lines.
6186             * (Do cap it, though, if we have a maximum pixel height.)
6187             */
6188            if (cap) {
6189                if (linecount > mMaximum) {
6190                    desired = layout.getLineTop(mMaximum);
6191
6192                    if (dr != null) {
6193                        desired = Math.max(desired, dr.mDrawableHeightLeft);
6194                        desired = Math.max(desired, dr.mDrawableHeightRight);
6195                    }
6196
6197                    desired += pad;
6198                    linecount = mMaximum;
6199                }
6200            }
6201        } else {
6202            desired = Math.min(desired, mMaximum);
6203        }
6204
6205        if (mMinMode == LINES) {
6206            if (linecount < mMinimum) {
6207                desired += getLineHeight() * (mMinimum - linecount);
6208            }
6209        } else {
6210            desired = Math.max(desired, mMinimum);
6211        }
6212
6213        // Check against our minimum height
6214        desired = Math.max(desired, getSuggestedMinimumHeight());
6215
6216        return desired;
6217    }
6218
6219    /**
6220     * Check whether a change to the existing text layout requires a
6221     * new view layout.
6222     */
6223    private void checkForResize() {
6224        boolean sizeChanged = false;
6225
6226        if (mLayout != null) {
6227            // Check if our width changed
6228            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
6229                sizeChanged = true;
6230                invalidate();
6231            }
6232
6233            // Check if our height changed
6234            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
6235                int desiredHeight = getDesiredHeight();
6236
6237                if (desiredHeight != this.getHeight()) {
6238                    sizeChanged = true;
6239                }
6240            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
6241                if (mDesiredHeightAtMeasure >= 0) {
6242                    int desiredHeight = getDesiredHeight();
6243
6244                    if (desiredHeight != mDesiredHeightAtMeasure) {
6245                        sizeChanged = true;
6246                    }
6247                }
6248            }
6249        }
6250
6251        if (sizeChanged) {
6252            requestLayout();
6253            // caller will have already invalidated
6254        }
6255    }
6256
6257    /**
6258     * Check whether entirely new text requires a new view layout
6259     * or merely a new text layout.
6260     */
6261    private void checkForRelayout() {
6262        // If we have a fixed width, we can just swap in a new text layout
6263        // if the text height stays the same or if the view height is fixed.
6264
6265        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
6266                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
6267                (mHint == null || mHintLayout != null) &&
6268                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
6269            // Static width, so try making a new text layout.
6270
6271            int oldht = mLayout.getHeight();
6272            int want = mLayout.getWidth();
6273            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
6274
6275            /*
6276             * No need to bring the text into view, since the size is not
6277             * changing (unless we do the requestLayout(), in which case it
6278             * will happen at measure).
6279             */
6280            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
6281                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
6282                          false);
6283
6284            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
6285                // In a fixed-height view, so use our new text layout.
6286                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
6287                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
6288                    invalidate();
6289                    return;
6290                }
6291
6292                // Dynamic height, but height has stayed the same,
6293                // so use our new text layout.
6294                if (mLayout.getHeight() == oldht &&
6295                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
6296                    invalidate();
6297                    return;
6298                }
6299            }
6300
6301            // We lose: the height has changed and we have a dynamic height.
6302            // Request a new view layout using our new text layout.
6303            requestLayout();
6304            invalidate();
6305        } else {
6306            // Dynamic width, so we have no choice but to request a new
6307            // view layout with a new text layout.
6308            nullLayouts();
6309            requestLayout();
6310            invalidate();
6311        }
6312    }
6313
6314    @Override
6315    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
6316        super.onLayout(changed, left, top, right, bottom);
6317        if (changed && mEditor != null) mEditor.invalidateTextDisplayList();
6318    }
6319
6320    private boolean isShowingHint() {
6321        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
6322    }
6323
6324    /**
6325     * Returns true if anything changed.
6326     */
6327    private boolean bringTextIntoView() {
6328        Layout layout = isShowingHint() ? mHintLayout : mLayout;
6329        int line = 0;
6330        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6331            line = layout.getLineCount() - 1;
6332        }
6333
6334        Layout.Alignment a = layout.getParagraphAlignment(line);
6335        int dir = layout.getParagraphDirection(line);
6336        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6337        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6338        int ht = layout.getHeight();
6339
6340        int scrollx, scrolly;
6341
6342        // Convert to left, center, or right alignment.
6343        if (a == Layout.Alignment.ALIGN_NORMAL) {
6344            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
6345                Layout.Alignment.ALIGN_RIGHT;
6346        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
6347            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
6348                Layout.Alignment.ALIGN_LEFT;
6349        }
6350
6351        if (a == Layout.Alignment.ALIGN_CENTER) {
6352            /*
6353             * Keep centered if possible, or, if it is too wide to fit,
6354             * keep leading edge in view.
6355             */
6356
6357            int left = (int) FloatMath.floor(layout.getLineLeft(line));
6358            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6359
6360            if (right - left < hspace) {
6361                scrollx = (right + left) / 2 - hspace / 2;
6362            } else {
6363                if (dir < 0) {
6364                    scrollx = right - hspace;
6365                } else {
6366                    scrollx = left;
6367                }
6368            }
6369        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
6370            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6371            scrollx = right - hspace;
6372        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
6373            scrollx = (int) FloatMath.floor(layout.getLineLeft(line));
6374        }
6375
6376        if (ht < vspace) {
6377            scrolly = 0;
6378        } else {
6379            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6380                scrolly = ht - vspace;
6381            } else {
6382                scrolly = 0;
6383            }
6384        }
6385
6386        if (scrollx != mScrollX || scrolly != mScrollY) {
6387            scrollTo(scrollx, scrolly);
6388            return true;
6389        } else {
6390            return false;
6391        }
6392    }
6393
6394    /**
6395     * Move the point, specified by the offset, into the view if it is needed.
6396     * This has to be called after layout. Returns true if anything changed.
6397     */
6398    public boolean bringPointIntoView(int offset) {
6399        boolean changed = false;
6400
6401        Layout layout = isShowingHint() ? mHintLayout: mLayout;
6402
6403        if (layout == null) return changed;
6404
6405        int line = layout.getLineForOffset(offset);
6406
6407        // FIXME: Is it okay to truncate this, or should we round?
6408        final int x = (int)layout.getPrimaryHorizontal(offset);
6409        final int top = layout.getLineTop(line);
6410        final int bottom = layout.getLineTop(line + 1);
6411
6412        int left = (int) FloatMath.floor(layout.getLineLeft(line));
6413        int right = (int) FloatMath.ceil(layout.getLineRight(line));
6414        int ht = layout.getHeight();
6415
6416        int grav;
6417
6418        switch (layout.getParagraphAlignment(line)) {
6419            case ALIGN_LEFT:
6420                grav = 1;
6421                break;
6422            case ALIGN_RIGHT:
6423                grav = -1;
6424                break;
6425            case ALIGN_NORMAL:
6426                grav = layout.getParagraphDirection(line);
6427                break;
6428            case ALIGN_OPPOSITE:
6429                grav = -layout.getParagraphDirection(line);
6430                break;
6431            case ALIGN_CENTER:
6432            default:
6433                grav = 0;
6434                break;
6435        }
6436
6437        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6438        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6439
6440        int hslack = (bottom - top) / 2;
6441        int vslack = hslack;
6442
6443        if (vslack > vspace / 4)
6444            vslack = vspace / 4;
6445        if (hslack > hspace / 4)
6446            hslack = hspace / 4;
6447
6448        int hs = mScrollX;
6449        int vs = mScrollY;
6450
6451        if (top - vs < vslack)
6452            vs = top - vslack;
6453        if (bottom - vs > vspace - vslack)
6454            vs = bottom - (vspace - vslack);
6455        if (ht - vs < vspace)
6456            vs = ht - vspace;
6457        if (0 - vs > 0)
6458            vs = 0;
6459
6460        if (grav != 0) {
6461            if (x - hs < hslack) {
6462                hs = x - hslack;
6463            }
6464            if (x - hs > hspace - hslack) {
6465                hs = x - (hspace - hslack);
6466            }
6467        }
6468
6469        if (grav < 0) {
6470            if (left - hs > 0)
6471                hs = left;
6472            if (right - hs < hspace)
6473                hs = right - hspace;
6474        } else if (grav > 0) {
6475            if (right - hs < hspace)
6476                hs = right - hspace;
6477            if (left - hs > 0)
6478                hs = left;
6479        } else /* grav == 0 */ {
6480            if (right - left <= hspace) {
6481                /*
6482                 * If the entire text fits, center it exactly.
6483                 */
6484                hs = left - (hspace - (right - left)) / 2;
6485            } else if (x > right - hslack) {
6486                /*
6487                 * If we are near the right edge, keep the right edge
6488                 * at the edge of the view.
6489                 */
6490                hs = right - hspace;
6491            } else if (x < left + hslack) {
6492                /*
6493                 * If we are near the left edge, keep the left edge
6494                 * at the edge of the view.
6495                 */
6496                hs = left;
6497            } else if (left > hs) {
6498                /*
6499                 * Is there whitespace visible at the left?  Fix it if so.
6500                 */
6501                hs = left;
6502            } else if (right < hs + hspace) {
6503                /*
6504                 * Is there whitespace visible at the right?  Fix it if so.
6505                 */
6506                hs = right - hspace;
6507            } else {
6508                /*
6509                 * Otherwise, float as needed.
6510                 */
6511                if (x - hs < hslack) {
6512                    hs = x - hslack;
6513                }
6514                if (x - hs > hspace - hslack) {
6515                    hs = x - (hspace - hslack);
6516                }
6517            }
6518        }
6519
6520        if (hs != mScrollX || vs != mScrollY) {
6521            if (mScroller == null) {
6522                scrollTo(hs, vs);
6523            } else {
6524                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
6525                int dx = hs - mScrollX;
6526                int dy = vs - mScrollY;
6527
6528                if (duration > ANIMATED_SCROLL_GAP) {
6529                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
6530                    awakenScrollBars(mScroller.getDuration());
6531                    invalidate();
6532                } else {
6533                    if (!mScroller.isFinished()) {
6534                        mScroller.abortAnimation();
6535                    }
6536
6537                    scrollBy(dx, dy);
6538                }
6539
6540                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
6541            }
6542
6543            changed = true;
6544        }
6545
6546        if (isFocused()) {
6547            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
6548            // requestRectangleOnScreen() is in terms of content coordinates.
6549
6550            // The offsets here are to ensure the rectangle we are using is
6551            // within our view bounds, in case the cursor is on the far left
6552            // or right.  If it isn't withing the bounds, then this request
6553            // will be ignored.
6554            if (mTempRect == null) mTempRect = new Rect();
6555            mTempRect.set(x - 2, top, x + 2, bottom);
6556            getInterestingRect(mTempRect, line);
6557            mTempRect.offset(mScrollX, mScrollY);
6558
6559            if (requestRectangleOnScreen(mTempRect)) {
6560                changed = true;
6561            }
6562        }
6563
6564        return changed;
6565    }
6566
6567    /**
6568     * Move the cursor, if needed, so that it is at an offset that is visible
6569     * to the user.  This will not move the cursor if it represents more than
6570     * one character (a selection range).  This will only work if the
6571     * TextView contains spannable text; otherwise it will do nothing.
6572     *
6573     * @return True if the cursor was actually moved, false otherwise.
6574     */
6575    public boolean moveCursorToVisibleOffset() {
6576        if (!(mText instanceof Spannable)) {
6577            return false;
6578        }
6579        int start = getSelectionStart();
6580        int end = getSelectionEnd();
6581        if (start != end) {
6582            return false;
6583        }
6584
6585        // First: make sure the line is visible on screen:
6586
6587        int line = mLayout.getLineForOffset(start);
6588
6589        final int top = mLayout.getLineTop(line);
6590        final int bottom = mLayout.getLineTop(line + 1);
6591        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6592        int vslack = (bottom - top) / 2;
6593        if (vslack > vspace / 4)
6594            vslack = vspace / 4;
6595        final int vs = mScrollY;
6596
6597        if (top < (vs+vslack)) {
6598            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
6599        } else if (bottom > (vspace+vs-vslack)) {
6600            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
6601        }
6602
6603        // Next: make sure the character is visible on screen:
6604
6605        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6606        final int hs = mScrollX;
6607        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
6608        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
6609
6610        // line might contain bidirectional text
6611        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
6612        final int highChar = leftChar > rightChar ? leftChar : rightChar;
6613
6614        int newStart = start;
6615        if (newStart < lowChar) {
6616            newStart = lowChar;
6617        } else if (newStart > highChar) {
6618            newStart = highChar;
6619        }
6620
6621        if (newStart != start) {
6622            Selection.setSelection((Spannable)mText, newStart);
6623            return true;
6624        }
6625
6626        return false;
6627    }
6628
6629    @Override
6630    public void computeScroll() {
6631        if (mScroller != null) {
6632            if (mScroller.computeScrollOffset()) {
6633                mScrollX = mScroller.getCurrX();
6634                mScrollY = mScroller.getCurrY();
6635                invalidateParentCaches();
6636                postInvalidate();  // So we draw again
6637            }
6638        }
6639    }
6640
6641    private void getInterestingRect(Rect r, int line) {
6642        convertFromViewportToContentCoordinates(r);
6643
6644        // Rectangle can can be expanded on first and last line to take
6645        // padding into account.
6646        // TODO Take left/right padding into account too?
6647        if (line == 0) r.top -= getExtendedPaddingTop();
6648        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
6649    }
6650
6651    private void convertFromViewportToContentCoordinates(Rect r) {
6652        final int horizontalOffset = viewportToContentHorizontalOffset();
6653        r.left += horizontalOffset;
6654        r.right += horizontalOffset;
6655
6656        final int verticalOffset = viewportToContentVerticalOffset();
6657        r.top += verticalOffset;
6658        r.bottom += verticalOffset;
6659    }
6660
6661    int viewportToContentHorizontalOffset() {
6662        return getCompoundPaddingLeft() - mScrollX;
6663    }
6664
6665    int viewportToContentVerticalOffset() {
6666        int offset = getExtendedPaddingTop() - mScrollY;
6667        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6668            offset += getVerticalOffset(false);
6669        }
6670        return offset;
6671    }
6672
6673    @Override
6674    public void debug(int depth) {
6675        super.debug(depth);
6676
6677        String output = debugIndent(depth);
6678        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
6679                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
6680                + "} ";
6681
6682        if (mText != null) {
6683
6684            output += "mText=\"" + mText + "\" ";
6685            if (mLayout != null) {
6686                output += "mLayout width=" + mLayout.getWidth()
6687                        + " height=" + mLayout.getHeight();
6688            }
6689        } else {
6690            output += "mText=NULL";
6691        }
6692        Log.d(VIEW_LOG_TAG, output);
6693    }
6694
6695    /**
6696     * Convenience for {@link Selection#getSelectionStart}.
6697     */
6698    @ViewDebug.ExportedProperty(category = "text")
6699    public int getSelectionStart() {
6700        return Selection.getSelectionStart(getText());
6701    }
6702
6703    /**
6704     * Convenience for {@link Selection#getSelectionEnd}.
6705     */
6706    @ViewDebug.ExportedProperty(category = "text")
6707    public int getSelectionEnd() {
6708        return Selection.getSelectionEnd(getText());
6709    }
6710
6711    /**
6712     * Return true iff there is a selection inside this text view.
6713     */
6714    public boolean hasSelection() {
6715        final int selectionStart = getSelectionStart();
6716        final int selectionEnd = getSelectionEnd();
6717
6718        return selectionStart >= 0 && selectionStart != selectionEnd;
6719    }
6720
6721    /**
6722     * Sets the properties of this field (lines, horizontally scrolling,
6723     * transformation method) to be for a single-line input.
6724     *
6725     * @attr ref android.R.styleable#TextView_singleLine
6726     */
6727    public void setSingleLine() {
6728        setSingleLine(true);
6729    }
6730
6731    /**
6732     * Sets the properties of this field to transform input to ALL CAPS
6733     * display. This may use a "small caps" formatting if available.
6734     * This setting will be ignored if this field is editable or selectable.
6735     *
6736     * This call replaces the current transformation method. Disabling this
6737     * will not necessarily restore the previous behavior from before this
6738     * was enabled.
6739     *
6740     * @see #setTransformationMethod(TransformationMethod)
6741     * @attr ref android.R.styleable#TextView_textAllCaps
6742     */
6743    public void setAllCaps(boolean allCaps) {
6744        if (allCaps) {
6745            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
6746        } else {
6747            setTransformationMethod(null);
6748        }
6749    }
6750
6751    /**
6752     * If true, sets the properties of this field (number of lines, horizontally scrolling,
6753     * transformation method) to be for a single-line input; if false, restores these to the default
6754     * conditions.
6755     *
6756     * Note that the default conditions are not necessarily those that were in effect prior this
6757     * method, and you may want to reset these properties to your custom values.
6758     *
6759     * @attr ref android.R.styleable#TextView_singleLine
6760     */
6761    @android.view.RemotableViewMethod
6762    public void setSingleLine(boolean singleLine) {
6763        // Could be used, but may break backward compatibility.
6764        // if (mSingleLine == singleLine) return;
6765        setInputTypeSingleLine(singleLine);
6766        applySingleLine(singleLine, true, true);
6767    }
6768
6769    /**
6770     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
6771     * @param singleLine
6772     */
6773    private void setInputTypeSingleLine(boolean singleLine) {
6774        if (mEditor != null &&
6775                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6776            if (singleLine) {
6777                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6778            } else {
6779                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6780            }
6781        }
6782    }
6783
6784    private void applySingleLine(boolean singleLine, boolean applyTransformation,
6785            boolean changeMaxLines) {
6786        mSingleLine = singleLine;
6787        if (singleLine) {
6788            setLines(1);
6789            setHorizontallyScrolling(true);
6790            if (applyTransformation) {
6791                setTransformationMethod(SingleLineTransformationMethod.getInstance());
6792            }
6793        } else {
6794            if (changeMaxLines) {
6795                setMaxLines(Integer.MAX_VALUE);
6796            }
6797            setHorizontallyScrolling(false);
6798            if (applyTransformation) {
6799                setTransformationMethod(null);
6800            }
6801        }
6802    }
6803
6804    /**
6805     * Causes words in the text that are longer than the view is wide
6806     * to be ellipsized instead of broken in the middle.  You may also
6807     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
6808     * to constrain the text to a single line.  Use <code>null</code>
6809     * to turn off ellipsizing.
6810     *
6811     * If {@link #setMaxLines} has been used to set two or more lines,
6812     * {@link android.text.TextUtils.TruncateAt#END} and
6813     * {@link android.text.TextUtils.TruncateAt#MARQUEE}* are only supported
6814     * (other ellipsizing types will not do anything).
6815     *
6816     * @attr ref android.R.styleable#TextView_ellipsize
6817     */
6818    public void setEllipsize(TextUtils.TruncateAt where) {
6819        // TruncateAt is an enum. != comparison is ok between these singleton objects.
6820        if (mEllipsize != where) {
6821            mEllipsize = where;
6822
6823            if (mLayout != null) {
6824                nullLayouts();
6825                requestLayout();
6826                invalidate();
6827            }
6828        }
6829    }
6830
6831    /**
6832     * Sets how many times to repeat the marquee animation. Only applied if the
6833     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
6834     *
6835     * @see #getMarqueeRepeatLimit()
6836     *
6837     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
6838     */
6839    public void setMarqueeRepeatLimit(int marqueeLimit) {
6840        mMarqueeRepeatLimit = marqueeLimit;
6841    }
6842
6843    /**
6844     * Gets the number of times the marquee animation is repeated. Only meaningful if the
6845     * TextView has marquee enabled.
6846     *
6847     * @return the number of times the marquee animation is repeated. -1 if the animation
6848     * repeats indefinitely
6849     *
6850     * @see #setMarqueeRepeatLimit(int)
6851     *
6852     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
6853     */
6854    public int getMarqueeRepeatLimit() {
6855        return mMarqueeRepeatLimit;
6856    }
6857
6858    /**
6859     * Returns where, if anywhere, words that are longer than the view
6860     * is wide should be ellipsized.
6861     */
6862    @ViewDebug.ExportedProperty
6863    public TextUtils.TruncateAt getEllipsize() {
6864        return mEllipsize;
6865    }
6866
6867    /**
6868     * Set the TextView so that when it takes focus, all the text is
6869     * selected.
6870     *
6871     * @attr ref android.R.styleable#TextView_selectAllOnFocus
6872     */
6873    @android.view.RemotableViewMethod
6874    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
6875        createEditorIfNeeded();
6876        mEditor.mSelectAllOnFocus = selectAllOnFocus;
6877
6878        if (selectAllOnFocus && !(mText instanceof Spannable)) {
6879            setText(mText, BufferType.SPANNABLE);
6880        }
6881    }
6882
6883    /**
6884     * Set whether the cursor is visible. The default is true. Note that this property only
6885     * makes sense for editable TextView.
6886     *
6887     * @see #isCursorVisible()
6888     *
6889     * @attr ref android.R.styleable#TextView_cursorVisible
6890     */
6891    @android.view.RemotableViewMethod
6892    public void setCursorVisible(boolean visible) {
6893        if (visible && mEditor == null) return; // visible is the default value with no edit data
6894        createEditorIfNeeded();
6895        if (mEditor.mCursorVisible != visible) {
6896            mEditor.mCursorVisible = visible;
6897            invalidate();
6898
6899            mEditor.makeBlink();
6900
6901            // InsertionPointCursorController depends on mCursorVisible
6902            mEditor.prepareCursorControllers();
6903        }
6904    }
6905
6906    /**
6907     * @return whether or not the cursor is visible (assuming this TextView is editable)
6908     *
6909     * @see #setCursorVisible(boolean)
6910     *
6911     * @attr ref android.R.styleable#TextView_cursorVisible
6912     */
6913    public boolean isCursorVisible() {
6914        // true is the default value
6915        return mEditor == null ? true : mEditor.mCursorVisible;
6916    }
6917
6918    private boolean canMarquee() {
6919        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
6920        return width > 0 && (mLayout.getLineWidth(0) > width ||
6921                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
6922                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
6923    }
6924
6925    private void startMarquee() {
6926        // Do not ellipsize EditText
6927        if (getKeyListener() != null) return;
6928
6929        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
6930            return;
6931        }
6932
6933        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
6934                getLineCount() == 1 && canMarquee()) {
6935
6936            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6937                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
6938                final Layout tmp = mLayout;
6939                mLayout = mSavedMarqueeModeLayout;
6940                mSavedMarqueeModeLayout = tmp;
6941                setHorizontalFadingEdgeEnabled(true);
6942                requestLayout();
6943                invalidate();
6944            }
6945
6946            if (mMarquee == null) mMarquee = new Marquee(this);
6947            mMarquee.start(mMarqueeRepeatLimit);
6948        }
6949    }
6950
6951    private void stopMarquee() {
6952        if (mMarquee != null && !mMarquee.isStopped()) {
6953            mMarquee.stop();
6954        }
6955
6956        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
6957            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
6958            final Layout tmp = mSavedMarqueeModeLayout;
6959            mSavedMarqueeModeLayout = mLayout;
6960            mLayout = tmp;
6961            setHorizontalFadingEdgeEnabled(false);
6962            requestLayout();
6963            invalidate();
6964        }
6965    }
6966
6967    private void startStopMarquee(boolean start) {
6968        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6969            if (start) {
6970                startMarquee();
6971            } else {
6972                stopMarquee();
6973            }
6974        }
6975    }
6976
6977    /**
6978     * This method is called when the text is changed, in case any subclasses
6979     * would like to know.
6980     *
6981     * Within <code>text</code>, the <code>lengthAfter</code> characters
6982     * beginning at <code>start</code> have just replaced old text that had
6983     * length <code>lengthBefore</code>. It is an error to attempt to make
6984     * changes to <code>text</code> from this callback.
6985     *
6986     * @param text The text the TextView is displaying
6987     * @param start The offset of the start of the range of the text that was
6988     * modified
6989     * @param lengthBefore The length of the former text that has been replaced
6990     * @param lengthAfter The length of the replacement modified text
6991     */
6992    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
6993        // intentionally empty, template pattern method can be overridden by subclasses
6994    }
6995
6996    /**
6997     * This method is called when the selection has changed, in case any
6998     * subclasses would like to know.
6999     *
7000     * @param selStart The new selection start location.
7001     * @param selEnd The new selection end location.
7002     */
7003    protected void onSelectionChanged(int selStart, int selEnd) {
7004        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
7005    }
7006
7007    /**
7008     * Adds a TextWatcher to the list of those whose methods are called
7009     * whenever this TextView's text changes.
7010     * <p>
7011     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
7012     * not called after {@link #setText} calls.  Now, doing {@link #setText}
7013     * if there are any text changed listeners forces the buffer type to
7014     * Editable if it would not otherwise be and does call this method.
7015     */
7016    public void addTextChangedListener(TextWatcher watcher) {
7017        if (mListeners == null) {
7018            mListeners = new ArrayList<TextWatcher>();
7019        }
7020
7021        mListeners.add(watcher);
7022    }
7023
7024    /**
7025     * Removes the specified TextWatcher from the list of those whose
7026     * methods are called
7027     * whenever this TextView's text changes.
7028     */
7029    public void removeTextChangedListener(TextWatcher watcher) {
7030        if (mListeners != null) {
7031            int i = mListeners.indexOf(watcher);
7032
7033            if (i >= 0) {
7034                mListeners.remove(i);
7035            }
7036        }
7037    }
7038
7039    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
7040        if (mListeners != null) {
7041            final ArrayList<TextWatcher> list = mListeners;
7042            final int count = list.size();
7043            for (int i = 0; i < count; i++) {
7044                list.get(i).beforeTextChanged(text, start, before, after);
7045            }
7046        }
7047
7048        // The spans that are inside or intersect the modified region no longer make sense
7049        removeIntersectingSpans(start, start + before, SpellCheckSpan.class);
7050        removeIntersectingSpans(start, start + before, SuggestionSpan.class);
7051    }
7052
7053    // Removes all spans that are inside or actually overlap the start..end range
7054    private <T> void removeIntersectingSpans(int start, int end, Class<T> type) {
7055        if (!(mText instanceof Editable)) return;
7056        Editable text = (Editable) mText;
7057
7058        T[] spans = text.getSpans(start, end, type);
7059        final int length = spans.length;
7060        for (int i = 0; i < length; i++) {
7061            final int s = text.getSpanStart(spans[i]);
7062            final int e = text.getSpanEnd(spans[i]);
7063            // Spans that are adjacent to the edited region will be handled in
7064            // updateSpellCheckSpans. Result depends on what will be added (space or text)
7065            if (e == start || s == end) break;
7066            text.removeSpan(spans[i]);
7067        }
7068    }
7069
7070    /**
7071     * Not private so it can be called from an inner class without going
7072     * through a thunk.
7073     */
7074    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
7075        if (mListeners != null) {
7076            final ArrayList<TextWatcher> list = mListeners;
7077            final int count = list.size();
7078            for (int i = 0; i < count; i++) {
7079                list.get(i).onTextChanged(text, start, before, after);
7080            }
7081        }
7082
7083        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
7084    }
7085
7086    /**
7087     * Not private so it can be called from an inner class without going
7088     * through a thunk.
7089     */
7090    void sendAfterTextChanged(Editable text) {
7091        if (mListeners != null) {
7092            final ArrayList<TextWatcher> list = mListeners;
7093            final int count = list.size();
7094            for (int i = 0; i < count; i++) {
7095                list.get(i).afterTextChanged(text);
7096            }
7097        }
7098    }
7099
7100    void updateAfterEdit() {
7101        invalidate();
7102        int curs = getSelectionStart();
7103
7104        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7105            registerForPreDraw();
7106        }
7107
7108        if (curs >= 0) {
7109            mHighlightPathBogus = true;
7110            if (mEditor != null) mEditor.makeBlink();
7111            bringPointIntoView(curs);
7112        }
7113
7114        checkForResize();
7115    }
7116
7117    /**
7118     * Not private so it can be called from an inner class without going
7119     * through a thunk.
7120     */
7121    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
7122        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7123        if (ims == null || ims.mBatchEditNesting == 0) {
7124            updateAfterEdit();
7125        }
7126        if (ims != null) {
7127            ims.mContentChanged = true;
7128            if (ims.mChangedStart < 0) {
7129                ims.mChangedStart = start;
7130                ims.mChangedEnd = start+before;
7131            } else {
7132                ims.mChangedStart = Math.min(ims.mChangedStart, start);
7133                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
7134            }
7135            ims.mChangedDelta += after-before;
7136        }
7137
7138        sendOnTextChanged(buffer, start, before, after);
7139        onTextChanged(buffer, start, before, after);
7140    }
7141
7142    /**
7143     * Not private so it can be called from an inner class without going
7144     * through a thunk.
7145     */
7146    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
7147        // XXX Make the start and end move together if this ends up
7148        // spending too much time invalidating.
7149
7150        boolean selChanged = false;
7151        int newSelStart=-1, newSelEnd=-1;
7152
7153        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7154
7155        if (what == Selection.SELECTION_END) {
7156            selChanged = true;
7157            newSelEnd = newStart;
7158
7159            if (oldStart >= 0 || newStart >= 0) {
7160                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
7161                registerForPreDraw();
7162                if (mEditor != null) mEditor.makeBlink();
7163            }
7164        }
7165
7166        if (what == Selection.SELECTION_START) {
7167            selChanged = true;
7168            newSelStart = newStart;
7169
7170            if (oldStart >= 0 || newStart >= 0) {
7171                int end = Selection.getSelectionEnd(buf);
7172                invalidateCursor(end, oldStart, newStart);
7173            }
7174        }
7175
7176        if (selChanged) {
7177            mHighlightPathBogus = true;
7178            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
7179
7180            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
7181                if (newSelStart < 0) {
7182                    newSelStart = Selection.getSelectionStart(buf);
7183                }
7184                if (newSelEnd < 0) {
7185                    newSelEnd = Selection.getSelectionEnd(buf);
7186                }
7187                onSelectionChanged(newSelStart, newSelEnd);
7188            }
7189        }
7190
7191        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
7192                what instanceof CharacterStyle) {
7193            if (ims == null || ims.mBatchEditNesting == 0) {
7194                invalidate();
7195                mHighlightPathBogus = true;
7196                checkForResize();
7197            } else {
7198                ims.mContentChanged = true;
7199            }
7200            if (mEditor != null) {
7201                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
7202                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
7203            }
7204        }
7205
7206        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
7207            mHighlightPathBogus = true;
7208            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
7209                ims.mSelectionModeChanged = true;
7210            }
7211
7212            if (Selection.getSelectionStart(buf) >= 0) {
7213                if (ims == null || ims.mBatchEditNesting == 0) {
7214                    invalidateCursor();
7215                } else {
7216                    ims.mCursorChanged = true;
7217                }
7218            }
7219        }
7220
7221        if (what instanceof ParcelableSpan) {
7222            // If this is a span that can be sent to a remote process,
7223            // the current extract editor would be interested in it.
7224            if (ims != null && ims.mExtractedTextRequest != null) {
7225                if (ims.mBatchEditNesting != 0) {
7226                    if (oldStart >= 0) {
7227                        if (ims.mChangedStart > oldStart) {
7228                            ims.mChangedStart = oldStart;
7229                        }
7230                        if (ims.mChangedStart > oldEnd) {
7231                            ims.mChangedStart = oldEnd;
7232                        }
7233                    }
7234                    if (newStart >= 0) {
7235                        if (ims.mChangedStart > newStart) {
7236                            ims.mChangedStart = newStart;
7237                        }
7238                        if (ims.mChangedStart > newEnd) {
7239                            ims.mChangedStart = newEnd;
7240                        }
7241                    }
7242                } else {
7243                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
7244                            + oldStart + "-" + oldEnd + ","
7245                            + newStart + "-" + newEnd + " " + what);
7246                    ims.mContentChanged = true;
7247                }
7248            }
7249        }
7250
7251        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
7252                what instanceof SpellCheckSpan) {
7253            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
7254        }
7255    }
7256
7257    /**
7258     * @hide
7259     */
7260    @Override
7261    public void dispatchFinishTemporaryDetach() {
7262        mDispatchTemporaryDetach = true;
7263        super.dispatchFinishTemporaryDetach();
7264        mDispatchTemporaryDetach = false;
7265    }
7266
7267    @Override
7268    public void onStartTemporaryDetach() {
7269        super.onStartTemporaryDetach();
7270        // Only track when onStartTemporaryDetach() is called directly,
7271        // usually because this instance is an editable field in a list
7272        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
7273
7274        // Tell the editor that we are temporarily detached. It can use this to preserve
7275        // selection state as needed.
7276        if (mEditor != null) mEditor.mTemporaryDetach = true;
7277    }
7278
7279    @Override
7280    public void onFinishTemporaryDetach() {
7281        super.onFinishTemporaryDetach();
7282        // Only track when onStartTemporaryDetach() is called directly,
7283        // usually because this instance is an editable field in a list
7284        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
7285        if (mEditor != null) mEditor.mTemporaryDetach = false;
7286    }
7287
7288    @Override
7289    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
7290        if (mTemporaryDetach) {
7291            // If we are temporarily in the detach state, then do nothing.
7292            super.onFocusChanged(focused, direction, previouslyFocusedRect);
7293            return;
7294        }
7295
7296        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
7297
7298        if (focused) {
7299            if (mText instanceof Spannable) {
7300                Spannable sp = (Spannable) mText;
7301                MetaKeyKeyListener.resetMetaState(sp);
7302            }
7303        }
7304
7305        startStopMarquee(focused);
7306
7307        if (mTransformation != null) {
7308            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
7309        }
7310
7311        super.onFocusChanged(focused, direction, previouslyFocusedRect);
7312    }
7313
7314    @Override
7315    public void onWindowFocusChanged(boolean hasWindowFocus) {
7316        super.onWindowFocusChanged(hasWindowFocus);
7317
7318        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
7319
7320        startStopMarquee(hasWindowFocus);
7321    }
7322
7323    @Override
7324    protected void onVisibilityChanged(View changedView, int visibility) {
7325        super.onVisibilityChanged(changedView, visibility);
7326        if (mEditor != null && visibility != VISIBLE) {
7327            mEditor.hideControllers();
7328        }
7329    }
7330
7331    /**
7332     * Use {@link BaseInputConnection#removeComposingSpans
7333     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
7334     * state from this text view.
7335     */
7336    public void clearComposingText() {
7337        if (mText instanceof Spannable) {
7338            BaseInputConnection.removeComposingSpans((Spannable)mText);
7339        }
7340    }
7341
7342    @Override
7343    public void setSelected(boolean selected) {
7344        boolean wasSelected = isSelected();
7345
7346        super.setSelected(selected);
7347
7348        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7349            if (selected) {
7350                startMarquee();
7351            } else {
7352                stopMarquee();
7353            }
7354        }
7355    }
7356
7357    @Override
7358    public boolean onTouchEvent(MotionEvent event) {
7359        final int action = event.getActionMasked();
7360
7361        if (mEditor != null) mEditor.onTouchEvent(event);
7362
7363        final boolean superResult = super.onTouchEvent(event);
7364
7365        /*
7366         * Don't handle the release after a long press, because it will
7367         * move the selection away from whatever the menu action was
7368         * trying to affect.
7369         */
7370        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
7371            mEditor.mDiscardNextActionUp = false;
7372            return superResult;
7373        }
7374
7375        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
7376                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
7377
7378         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
7379                && mText instanceof Spannable && mLayout != null) {
7380            boolean handled = false;
7381
7382            if (mMovement != null) {
7383                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
7384            }
7385
7386            final boolean textIsSelectable = isTextSelectable();
7387            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
7388                // The LinkMovementMethod which should handle taps on links has not been installed
7389                // on non editable text that support text selection.
7390                // We reproduce its behavior here to open links for these.
7391                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
7392                        getSelectionEnd(), ClickableSpan.class);
7393
7394                if (links.length > 0) {
7395                    links[0].onClick(this);
7396                    handled = true;
7397                }
7398            }
7399
7400            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
7401                // Show the IME, except when selecting in read-only text.
7402                final InputMethodManager imm = InputMethodManager.peekInstance();
7403                viewClicked(imm);
7404                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
7405                    handled |= imm != null && imm.showSoftInput(this, 0);
7406                }
7407
7408                // The above condition ensures that the mEditor is not null
7409                mEditor.onTouchUpEvent(event);
7410
7411                handled = true;
7412            }
7413
7414            if (handled) {
7415                return true;
7416            }
7417        }
7418
7419        return superResult;
7420    }
7421
7422    @Override
7423    public boolean onGenericMotionEvent(MotionEvent event) {
7424        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7425            try {
7426                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
7427                    return true;
7428                }
7429            } catch (AbstractMethodError ex) {
7430                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
7431                // Ignore its absence in case third party applications implemented the
7432                // interface directly.
7433            }
7434        }
7435        return super.onGenericMotionEvent(event);
7436    }
7437
7438    /**
7439     * @return True iff this TextView contains a text that can be edited, or if this is
7440     * a selectable TextView.
7441     */
7442    boolean isTextEditable() {
7443        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
7444    }
7445
7446    /**
7447     * Returns true, only while processing a touch gesture, if the initial
7448     * touch down event caused focus to move to the text view and as a result
7449     * its selection changed.  Only valid while processing the touch gesture
7450     * of interest, in an editable text view.
7451     */
7452    public boolean didTouchFocusSelect() {
7453        return mEditor != null && mEditor.mTouchFocusSelected;
7454    }
7455
7456    @Override
7457    public void cancelLongPress() {
7458        super.cancelLongPress();
7459        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
7460    }
7461
7462    @Override
7463    public boolean onTrackballEvent(MotionEvent event) {
7464        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7465            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
7466                return true;
7467            }
7468        }
7469
7470        return super.onTrackballEvent(event);
7471    }
7472
7473    public void setScroller(Scroller s) {
7474        mScroller = s;
7475    }
7476
7477    @Override
7478    protected float getLeftFadingEdgeStrength() {
7479        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7480                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7481            if (mMarquee != null && !mMarquee.isStopped()) {
7482                final Marquee marquee = mMarquee;
7483                if (marquee.shouldDrawLeftFade()) {
7484                    return marquee.mScroll / getHorizontalFadingEdgeLength();
7485                } else {
7486                    return 0.0f;
7487                }
7488            } else if (getLineCount() == 1) {
7489                final int layoutDirection = getResolvedLayoutDirection();
7490                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7491                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7492                    case Gravity.LEFT:
7493                        return 0.0f;
7494                    case Gravity.RIGHT:
7495                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
7496                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
7497                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
7498                    case Gravity.CENTER_HORIZONTAL:
7499                        return 0.0f;
7500                }
7501            }
7502        }
7503        return super.getLeftFadingEdgeStrength();
7504    }
7505
7506    @Override
7507    protected float getRightFadingEdgeStrength() {
7508        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7509                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7510            if (mMarquee != null && !mMarquee.isStopped()) {
7511                final Marquee marquee = mMarquee;
7512                return (marquee.mMaxFadeScroll - marquee.mScroll) / getHorizontalFadingEdgeLength();
7513            } else if (getLineCount() == 1) {
7514                final int layoutDirection = getResolvedLayoutDirection();
7515                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7516                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7517                    case Gravity.LEFT:
7518                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
7519                                getCompoundPaddingRight();
7520                        final float lineWidth = mLayout.getLineWidth(0);
7521                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
7522                    case Gravity.RIGHT:
7523                        return 0.0f;
7524                    case Gravity.CENTER_HORIZONTAL:
7525                    case Gravity.FILL_HORIZONTAL:
7526                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
7527                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
7528                                getHorizontalFadingEdgeLength();
7529                }
7530            }
7531        }
7532        return super.getRightFadingEdgeStrength();
7533    }
7534
7535    @Override
7536    protected int computeHorizontalScrollRange() {
7537        if (mLayout != null) {
7538            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
7539                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
7540        }
7541
7542        return super.computeHorizontalScrollRange();
7543    }
7544
7545    @Override
7546    protected int computeVerticalScrollRange() {
7547        if (mLayout != null)
7548            return mLayout.getHeight();
7549
7550        return super.computeVerticalScrollRange();
7551    }
7552
7553    @Override
7554    protected int computeVerticalScrollExtent() {
7555        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
7556    }
7557
7558    @Override
7559    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
7560        super.findViewsWithText(outViews, searched, flags);
7561        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
7562                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
7563            String searchedLowerCase = searched.toString().toLowerCase();
7564            String textLowerCase = mText.toString().toLowerCase();
7565            if (textLowerCase.contains(searchedLowerCase)) {
7566                outViews.add(this);
7567            }
7568        }
7569    }
7570
7571    public enum BufferType {
7572        NORMAL, SPANNABLE, EDITABLE,
7573    }
7574
7575    /**
7576     * Returns the TextView_textColor attribute from the
7577     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
7578     * from the TextView_textAppearance attribute, if TextView_textColor
7579     * was not set directly.
7580     */
7581    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
7582        ColorStateList colors;
7583        colors = attrs.getColorStateList(com.android.internal.R.styleable.
7584                                         TextView_textColor);
7585
7586        if (colors == null) {
7587            int ap = attrs.getResourceId(com.android.internal.R.styleable.
7588                                         TextView_textAppearance, -1);
7589            if (ap != -1) {
7590                TypedArray appearance;
7591                appearance = context.obtainStyledAttributes(ap,
7592                                            com.android.internal.R.styleable.TextAppearance);
7593                colors = appearance.getColorStateList(com.android.internal.R.styleable.
7594                                                  TextAppearance_textColor);
7595                appearance.recycle();
7596            }
7597        }
7598
7599        return colors;
7600    }
7601
7602    /**
7603     * Returns the default color from the TextView_textColor attribute
7604     * from the AttributeSet, if set, or the default color from the
7605     * TextAppearance_textColor from the TextView_textAppearance attribute,
7606     * if TextView_textColor was not set directly.
7607     */
7608    public static int getTextColor(Context context,
7609                                   TypedArray attrs,
7610                                   int def) {
7611        ColorStateList colors = getTextColors(context, attrs);
7612
7613        if (colors == null) {
7614            return def;
7615        } else {
7616            return colors.getDefaultColor();
7617        }
7618    }
7619
7620    @Override
7621    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
7622        final int filteredMetaState = event.getMetaState() & ~KeyEvent.META_CTRL_MASK;
7623        if (KeyEvent.metaStateHasNoModifiers(filteredMetaState)) {
7624            switch (keyCode) {
7625            case KeyEvent.KEYCODE_A:
7626                if (canSelectText()) {
7627                    return onTextContextMenuItem(ID_SELECT_ALL);
7628                }
7629                break;
7630            case KeyEvent.KEYCODE_X:
7631                if (canCut()) {
7632                    return onTextContextMenuItem(ID_CUT);
7633                }
7634                break;
7635            case KeyEvent.KEYCODE_C:
7636                if (canCopy()) {
7637                    return onTextContextMenuItem(ID_COPY);
7638                }
7639                break;
7640            case KeyEvent.KEYCODE_V:
7641                if (canPaste()) {
7642                    return onTextContextMenuItem(ID_PASTE);
7643                }
7644                break;
7645            }
7646        }
7647        return super.onKeyShortcut(keyCode, event);
7648    }
7649
7650    /**
7651     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
7652     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
7653     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
7654     * sufficient.
7655     */
7656    private boolean canSelectText() {
7657        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
7658    }
7659
7660    /**
7661     * Test based on the <i>intrinsic</i> charateristics of the TextView.
7662     * The text must be spannable and the movement method must allow for arbitary selection.
7663     *
7664     * See also {@link #canSelectText()}.
7665     */
7666    boolean textCanBeSelected() {
7667        // prepareCursorController() relies on this method.
7668        // If you change this condition, make sure prepareCursorController is called anywhere
7669        // the value of this condition might be changed.
7670        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
7671        return isTextEditable() ||
7672                (isTextSelectable() && mText instanceof Spannable && isEnabled());
7673    }
7674
7675    /**
7676     * This is a temporary method. Future versions may support multi-locale text.
7677     *
7678     * @return The locale that should be used for a word iterator and a spell checker
7679     * in this TextView, based on the current spell checker settings,
7680     * the current IME's locale, or the system default locale.
7681     * @hide
7682     */
7683    public Locale getTextServicesLocale() {
7684        Locale locale = Locale.getDefault();
7685        final TextServicesManager textServicesManager = (TextServicesManager)
7686                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
7687        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
7688        if (subtype != null) {
7689            locale = SpellCheckerSubtype.constructLocaleFromString(subtype.getLocale());
7690        }
7691        return locale;
7692    }
7693
7694    void onLocaleChanged() {
7695        // Will be re-created on demand in getWordIterator with the proper new locale
7696        mEditor.mWordIterator = null;
7697    }
7698
7699    /**
7700     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
7701     * Made available to achieve a consistent behavior.
7702     * @hide
7703     */
7704    public WordIterator getWordIterator() {
7705        if (mEditor != null) {
7706            return mEditor.getWordIterator();
7707        } else {
7708            return null;
7709        }
7710    }
7711
7712    @Override
7713    public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
7714        super.onPopulateAccessibilityEvent(event);
7715
7716        final boolean isPassword = hasPasswordTransformationMethod();
7717        if (!isPassword || shouldSpeakPasswordsForAccessibility()) {
7718            final CharSequence text = getTextForAccessibility();
7719            if (!TextUtils.isEmpty(text)) {
7720                event.getText().add(text);
7721            }
7722        }
7723    }
7724
7725    /**
7726     * @return true if the user has explicitly allowed accessibility services
7727     * to speak passwords.
7728     */
7729    private boolean shouldSpeakPasswordsForAccessibility() {
7730        return (Settings.Secure.getInt(mContext.getContentResolver(),
7731                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0) == 1);
7732    }
7733
7734    @Override
7735    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
7736        super.onInitializeAccessibilityEvent(event);
7737
7738        event.setClassName(TextView.class.getName());
7739        final boolean isPassword = hasPasswordTransformationMethod();
7740        event.setPassword(isPassword);
7741
7742        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
7743            event.setFromIndex(Selection.getSelectionStart(mText));
7744            event.setToIndex(Selection.getSelectionEnd(mText));
7745            event.setItemCount(mText.length());
7746        }
7747    }
7748
7749    @Override
7750    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
7751        super.onInitializeAccessibilityNodeInfo(info);
7752
7753        info.setClassName(TextView.class.getName());
7754        final boolean isPassword = hasPasswordTransformationMethod();
7755        info.setPassword(isPassword);
7756
7757        if (!isPassword) {
7758            info.setText(getTextForAccessibility());
7759        }
7760
7761        if (TextUtils.isEmpty(getContentDescription()) && !TextUtils.isEmpty(mText)) {
7762            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
7763            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
7764            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
7765                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
7766                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
7767                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
7768                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
7769        }
7770    }
7771
7772    @Override
7773    public void sendAccessibilityEvent(int eventType) {
7774        // Do not send scroll events since first they are not interesting for
7775        // accessibility and second such events a generated too frequently.
7776        // For details see the implementation of bringTextIntoView().
7777        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
7778            return;
7779        }
7780        super.sendAccessibilityEvent(eventType);
7781    }
7782
7783    /**
7784     * Gets the text reported for accessibility purposes.
7785     *
7786     * @return The accessibility text.
7787     *
7788     * @hide
7789     */
7790    public CharSequence getTextForAccessibility() {
7791        CharSequence text = getText();
7792        if (TextUtils.isEmpty(text)) {
7793            text = getHint();
7794        }
7795        return text;
7796    }
7797
7798    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
7799            int fromIndex, int removedCount, int addedCount) {
7800        AccessibilityEvent event =
7801            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
7802        event.setFromIndex(fromIndex);
7803        event.setRemovedCount(removedCount);
7804        event.setAddedCount(addedCount);
7805        event.setBeforeText(beforeText);
7806        sendAccessibilityEventUnchecked(event);
7807    }
7808
7809    /**
7810     * Returns whether this text view is a current input method target.  The
7811     * default implementation just checks with {@link InputMethodManager}.
7812     */
7813    public boolean isInputMethodTarget() {
7814        InputMethodManager imm = InputMethodManager.peekInstance();
7815        return imm != null && imm.isActive(this);
7816    }
7817
7818    static final int ID_SELECT_ALL = android.R.id.selectAll;
7819    static final int ID_CUT = android.R.id.cut;
7820    static final int ID_COPY = android.R.id.copy;
7821    static final int ID_PASTE = android.R.id.paste;
7822
7823    /**
7824     * Called when a context menu option for the text view is selected.  Currently
7825     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
7826     * {@link android.R.id#copy} or {@link android.R.id#paste}.
7827     *
7828     * @return true if the context menu item action was performed.
7829     */
7830    public boolean onTextContextMenuItem(int id) {
7831        int min = 0;
7832        int max = mText.length();
7833
7834        if (isFocused()) {
7835            final int selStart = getSelectionStart();
7836            final int selEnd = getSelectionEnd();
7837
7838            min = Math.max(0, Math.min(selStart, selEnd));
7839            max = Math.max(0, Math.max(selStart, selEnd));
7840        }
7841
7842        switch (id) {
7843            case ID_SELECT_ALL:
7844                // This does not enter text selection mode. Text is highlighted, so that it can be
7845                // bulk edited, like selectAllOnFocus does. Returns true even if text is empty.
7846                selectAllText();
7847                return true;
7848
7849            case ID_PASTE:
7850                paste(min, max);
7851                return true;
7852
7853            case ID_CUT:
7854                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
7855                deleteText_internal(min, max);
7856                stopSelectionActionMode();
7857                return true;
7858
7859            case ID_COPY:
7860                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
7861                stopSelectionActionMode();
7862                return true;
7863        }
7864        return false;
7865    }
7866
7867    CharSequence getTransformedText(int start, int end) {
7868        return removeSuggestionSpans(mTransformed.subSequence(start, end));
7869    }
7870
7871    @Override
7872    public boolean performLongClick() {
7873        boolean handled = false;
7874
7875        if (super.performLongClick()) {
7876            handled = true;
7877        }
7878
7879        if (mEditor != null) {
7880            handled |= mEditor.performLongClick(handled);
7881        }
7882
7883        if (handled) {
7884            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
7885            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
7886        }
7887
7888        return handled;
7889    }
7890
7891    @Override
7892    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
7893        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
7894        if (mEditor != null) {
7895            mEditor.onScrollChanged();
7896        }
7897    }
7898
7899    /**
7900     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
7901     * by the IME or by the spell checker as the user types. This is done by adding
7902     * {@link SuggestionSpan}s to the text.
7903     *
7904     * When suggestions are enabled (default), this list of suggestions will be displayed when the
7905     * user asks for them on these parts of the text. This value depends on the inputType of this
7906     * TextView.
7907     *
7908     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
7909     *
7910     * In addition, the type variation must be one of
7911     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
7912     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
7913     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
7914     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
7915     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
7916     *
7917     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
7918     *
7919     * @return true if the suggestions popup window is enabled, based on the inputType.
7920     */
7921    public boolean isSuggestionsEnabled() {
7922        if (mEditor == null) return false;
7923        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
7924            return false;
7925        }
7926        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
7927
7928        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
7929        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
7930                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
7931                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
7932                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
7933                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
7934    }
7935
7936    /**
7937     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
7938     * selection is initiated in this View.
7939     *
7940     * The standard implementation populates the menu with a subset of Select All, Cut, Copy and
7941     * Paste actions, depending on what this View supports.
7942     *
7943     * A custom implementation can add new entries in the default menu in its
7944     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The
7945     * default actions can also be removed from the menu using {@link Menu#removeItem(int)} and
7946     * passing {@link android.R.id#selectAll}, {@link android.R.id#cut}, {@link android.R.id#copy}
7947     * or {@link android.R.id#paste} ids as parameters.
7948     *
7949     * Returning false from
7950     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will prevent
7951     * the action mode from being started.
7952     *
7953     * Action click events should be handled by the custom implementation of
7954     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
7955     *
7956     * Note that text selection mode is not started when a TextView receives focus and the
7957     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
7958     * that case, to allow for quick replacement.
7959     */
7960    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
7961        createEditorIfNeeded();
7962        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
7963    }
7964
7965    /**
7966     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
7967     *
7968     * @return The current custom selection callback.
7969     */
7970    public ActionMode.Callback getCustomSelectionActionModeCallback() {
7971        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
7972    }
7973
7974    /**
7975     * @hide
7976     */
7977    protected void stopSelectionActionMode() {
7978        mEditor.stopSelectionActionMode();
7979    }
7980
7981    boolean canCut() {
7982        if (hasPasswordTransformationMethod()) {
7983            return false;
7984        }
7985
7986        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
7987                mEditor.mKeyListener != null) {
7988            return true;
7989        }
7990
7991        return false;
7992    }
7993
7994    boolean canCopy() {
7995        if (hasPasswordTransformationMethod()) {
7996            return false;
7997        }
7998
7999        if (mText.length() > 0 && hasSelection()) {
8000            return true;
8001        }
8002
8003        return false;
8004    }
8005
8006    boolean canPaste() {
8007        return (mText instanceof Editable &&
8008                mEditor != null && mEditor.mKeyListener != null &&
8009                getSelectionStart() >= 0 &&
8010                getSelectionEnd() >= 0 &&
8011                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
8012                hasPrimaryClip());
8013    }
8014
8015    boolean selectAllText() {
8016        final int length = mText.length();
8017        Selection.setSelection((Spannable) mText, 0, length);
8018        return length > 0;
8019    }
8020
8021    /**
8022     * Prepare text so that there are not zero or two spaces at beginning and end of region defined
8023     * by [min, max] when replacing this region by paste.
8024     * Note that if there were two spaces (or more) at that position before, they are kept. We just
8025     * make sure we do not add an extra one from the paste content.
8026     */
8027    long prepareSpacesAroundPaste(int min, int max, CharSequence paste) {
8028        if (paste.length() > 0) {
8029            if (min > 0) {
8030                final char charBefore = mTransformed.charAt(min - 1);
8031                final char charAfter = paste.charAt(0);
8032
8033                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8034                    // Two spaces at beginning of paste: remove one
8035                    final int originalLength = mText.length();
8036                    deleteText_internal(min - 1, min);
8037                    // Due to filters, there is no guarantee that exactly one character was
8038                    // removed: count instead.
8039                    final int delta = mText.length() - originalLength;
8040                    min += delta;
8041                    max += delta;
8042                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8043                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8044                    // No space at beginning of paste: add one
8045                    final int originalLength = mText.length();
8046                    replaceText_internal(min, min, " ");
8047                    // Taking possible filters into account as above.
8048                    final int delta = mText.length() - originalLength;
8049                    min += delta;
8050                    max += delta;
8051                }
8052            }
8053
8054            if (max < mText.length()) {
8055                final char charBefore = paste.charAt(paste.length() - 1);
8056                final char charAfter = mTransformed.charAt(max);
8057
8058                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8059                    // Two spaces at end of paste: remove one
8060                    deleteText_internal(max, max + 1);
8061                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8062                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8063                    // No space at end of paste: add one
8064                    replaceText_internal(max, max, " ");
8065                }
8066            }
8067        }
8068
8069        return TextUtils.packRangeInLong(min, max);
8070    }
8071
8072    /**
8073     * Paste clipboard content between min and max positions.
8074     */
8075    private void paste(int min, int max) {
8076        ClipboardManager clipboard =
8077            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
8078        ClipData clip = clipboard.getPrimaryClip();
8079        if (clip != null) {
8080            boolean didFirst = false;
8081            for (int i=0; i<clip.getItemCount(); i++) {
8082                CharSequence paste = clip.getItemAt(i).coerceToStyledText(getContext());
8083                if (paste != null) {
8084                    if (!didFirst) {
8085                        long minMax = prepareSpacesAroundPaste(min, max, paste);
8086                        min = TextUtils.unpackRangeStartFromLong(minMax);
8087                        max = TextUtils.unpackRangeEndFromLong(minMax);
8088                        Selection.setSelection((Spannable) mText, max);
8089                        ((Editable) mText).replace(min, max, paste);
8090                        didFirst = true;
8091                    } else {
8092                        ((Editable) mText).insert(getSelectionEnd(), "\n");
8093                        ((Editable) mText).insert(getSelectionEnd(), paste);
8094                    }
8095                }
8096            }
8097            stopSelectionActionMode();
8098            LAST_CUT_OR_COPY_TIME = 0;
8099        }
8100    }
8101
8102    private void setPrimaryClip(ClipData clip) {
8103        ClipboardManager clipboard = (ClipboardManager) getContext().
8104                getSystemService(Context.CLIPBOARD_SERVICE);
8105        clipboard.setPrimaryClip(clip);
8106        LAST_CUT_OR_COPY_TIME = SystemClock.uptimeMillis();
8107    }
8108
8109    /**
8110     * Get the character offset closest to the specified absolute position. A typical use case is to
8111     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
8112     *
8113     * @param x The horizontal absolute position of a point on screen
8114     * @param y The vertical absolute position of a point on screen
8115     * @return the character offset for the character whose position is closest to the specified
8116     *  position. Returns -1 if there is no layout.
8117     */
8118    public int getOffsetForPosition(float x, float y) {
8119        if (getLayout() == null) return -1;
8120        final int line = getLineAtCoordinate(y);
8121        final int offset = getOffsetAtCoordinate(line, x);
8122        return offset;
8123    }
8124
8125    float convertToLocalHorizontalCoordinate(float x) {
8126        x -= getTotalPaddingLeft();
8127        // Clamp the position to inside of the view.
8128        x = Math.max(0.0f, x);
8129        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
8130        x += getScrollX();
8131        return x;
8132    }
8133
8134    int getLineAtCoordinate(float y) {
8135        y -= getTotalPaddingTop();
8136        // Clamp the position to inside of the view.
8137        y = Math.max(0.0f, y);
8138        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
8139        y += getScrollY();
8140        return getLayout().getLineForVertical((int) y);
8141    }
8142
8143    private int getOffsetAtCoordinate(int line, float x) {
8144        x = convertToLocalHorizontalCoordinate(x);
8145        return getLayout().getOffsetForHorizontal(line, x);
8146    }
8147
8148    @Override
8149    public boolean onDragEvent(DragEvent event) {
8150        switch (event.getAction()) {
8151            case DragEvent.ACTION_DRAG_STARTED:
8152                return mEditor != null && mEditor.hasInsertionController();
8153
8154            case DragEvent.ACTION_DRAG_ENTERED:
8155                TextView.this.requestFocus();
8156                return true;
8157
8158            case DragEvent.ACTION_DRAG_LOCATION:
8159                final int offset = getOffsetForPosition(event.getX(), event.getY());
8160                Selection.setSelection((Spannable)mText, offset);
8161                return true;
8162
8163            case DragEvent.ACTION_DROP:
8164                if (mEditor != null) mEditor.onDrop(event);
8165                return true;
8166
8167            case DragEvent.ACTION_DRAG_ENDED:
8168            case DragEvent.ACTION_DRAG_EXITED:
8169            default:
8170                return true;
8171        }
8172    }
8173
8174    boolean isInBatchEditMode() {
8175        if (mEditor == null) return false;
8176        final Editor.InputMethodState ims = mEditor.mInputMethodState;
8177        if (ims != null) {
8178            return ims.mBatchEditNesting > 0;
8179        }
8180        return mEditor.mInBatchEditControllers;
8181    }
8182
8183    /** @hide */
8184    @Override
8185    public void onResolvedTextDirectionChanged() {
8186        if (hasPasswordTransformationMethod()) {
8187            // TODO: take care of the content direction to show the password text and dots justified
8188            // to the left or to the right
8189            mTextDir = TextDirectionHeuristics.LOCALE;
8190            return;
8191        }
8192
8193        // Always need to resolve layout direction first
8194        final boolean defaultIsRtl = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL);
8195
8196        // Now, we can select the heuristic
8197        int textDir = getResolvedTextDirection();
8198        switch (textDir) {
8199            default:
8200            case TEXT_DIRECTION_FIRST_STRONG:
8201                mTextDir = (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
8202                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
8203                break;
8204            case TEXT_DIRECTION_ANY_RTL:
8205                mTextDir = TextDirectionHeuristics.ANYRTL_LTR;
8206                break;
8207            case TEXT_DIRECTION_LTR:
8208                mTextDir = TextDirectionHeuristics.LTR;
8209                break;
8210            case TEXT_DIRECTION_RTL:
8211                mTextDir = TextDirectionHeuristics.RTL;
8212                break;
8213            case TEXT_DIRECTION_LOCALE:
8214                mTextDir = TextDirectionHeuristics.LOCALE;
8215                break;
8216        }
8217    }
8218
8219    /**
8220     * Subclasses will need to override this method to implement their own way of resolving
8221     * drawables depending on the layout direction.
8222     *
8223     * A call to the super method will be required from the subclasses implementation.
8224     */
8225    protected void resolveDrawables() {
8226        // No need to resolve twice
8227        if (mResolvedDrawables) {
8228            return;
8229        }
8230        // No drawable to resolve
8231        if (mDrawables == null) {
8232            return;
8233        }
8234        // No relative drawable to resolve
8235        if (mDrawables.mDrawableStart == null && mDrawables.mDrawableEnd == null) {
8236            mResolvedDrawables = true;
8237            return;
8238        }
8239
8240        Drawables dr = mDrawables;
8241        switch(getResolvedLayoutDirection()) {
8242            case LAYOUT_DIRECTION_RTL:
8243                if (dr.mDrawableStart != null) {
8244                    dr.mDrawableRight = dr.mDrawableStart;
8245
8246                    dr.mDrawableSizeRight = dr.mDrawableSizeStart;
8247                    dr.mDrawableHeightRight = dr.mDrawableHeightStart;
8248                }
8249                if (dr.mDrawableEnd != null) {
8250                    dr.mDrawableLeft = dr.mDrawableEnd;
8251
8252                    dr.mDrawableSizeLeft = dr.mDrawableSizeEnd;
8253                    dr.mDrawableHeightLeft = dr.mDrawableHeightEnd;
8254                }
8255                break;
8256
8257            case LAYOUT_DIRECTION_LTR:
8258            default:
8259                if (dr.mDrawableStart != null) {
8260                    dr.mDrawableLeft = dr.mDrawableStart;
8261
8262                    dr.mDrawableSizeLeft = dr.mDrawableSizeStart;
8263                    dr.mDrawableHeightLeft = dr.mDrawableHeightStart;
8264                }
8265                if (dr.mDrawableEnd != null) {
8266                    dr.mDrawableRight = dr.mDrawableEnd;
8267
8268                    dr.mDrawableSizeRight = dr.mDrawableSizeEnd;
8269                    dr.mDrawableHeightRight = dr.mDrawableHeightEnd;
8270                }
8271                break;
8272        }
8273        mResolvedDrawables = true;
8274    }
8275
8276    protected void resetResolvedDrawables() {
8277        mResolvedDrawables = false;
8278    }
8279
8280    /**
8281     * @hide
8282     */
8283    protected void viewClicked(InputMethodManager imm) {
8284        if (imm != null) {
8285            imm.viewClicked(this);
8286        }
8287    }
8288
8289    /**
8290     * Deletes the range of text [start, end[.
8291     * @hide
8292     */
8293    protected void deleteText_internal(int start, int end) {
8294        ((Editable) mText).delete(start, end);
8295    }
8296
8297    /**
8298     * Replaces the range of text [start, end[ by replacement text
8299     * @hide
8300     */
8301    protected void replaceText_internal(int start, int end, CharSequence text) {
8302        ((Editable) mText).replace(start, end, text);
8303    }
8304
8305    /**
8306     * Sets a span on the specified range of text
8307     * @hide
8308     */
8309    protected void setSpan_internal(Object span, int start, int end, int flags) {
8310        ((Editable) mText).setSpan(span, start, end, flags);
8311    }
8312
8313    /**
8314     * Moves the cursor to the specified offset position in text
8315     * @hide
8316     */
8317    protected void setCursorPosition_internal(int start, int end) {
8318        Selection.setSelection(((Editable) mText), start, end);
8319    }
8320
8321    /**
8322     * An Editor should be created as soon as any of the editable-specific fields (grouped
8323     * inside the Editor object) is assigned to a non-default value.
8324     * This method will create the Editor if needed.
8325     *
8326     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
8327     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
8328     * Editor for backward compatibility, as soon as one of these fields is assigned.
8329     *
8330     * Also note that for performance reasons, the mEditor is created when needed, but not
8331     * reset when no more edit-specific fields are needed.
8332     */
8333    private void createEditorIfNeeded() {
8334        if (mEditor == null) {
8335            mEditor = new Editor(this);
8336        }
8337    }
8338
8339    /**
8340     * @hide
8341     */
8342    @Override
8343    public CharSequence getIterableTextForAccessibility() {
8344        if (getContentDescription() == null) {
8345            if (!(mText instanceof Spannable)) {
8346                setText(mText, BufferType.SPANNABLE);
8347            }
8348            return mText;
8349        }
8350        return super.getIterableTextForAccessibility();
8351    }
8352
8353    /**
8354     * @hide
8355     */
8356    @Override
8357    public TextSegmentIterator getIteratorForGranularity(int granularity) {
8358        switch (granularity) {
8359            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
8360                Spannable text = (Spannable) getIterableTextForAccessibility();
8361                if (!TextUtils.isEmpty(text) && getLayout() != null) {
8362                    AccessibilityIterators.LineTextSegmentIterator iterator =
8363                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
8364                    iterator.initialize(text, getLayout());
8365                    return iterator;
8366                }
8367            } break;
8368            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
8369                Spannable text = (Spannable) getIterableTextForAccessibility();
8370                if (!TextUtils.isEmpty(text) && getLayout() != null) {
8371                    AccessibilityIterators.PageTextSegmentIterator iterator =
8372                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
8373                    iterator.initialize(this);
8374                    return iterator;
8375                }
8376            } break;
8377        }
8378        return super.getIteratorForGranularity(granularity);
8379    }
8380
8381    /**
8382     * @hide
8383     */
8384    @Override
8385    public int getAccessibilityCursorPosition() {
8386        if (TextUtils.isEmpty(getContentDescription())) {
8387            final int selectionEnd = getSelectionEnd();
8388            if (selectionEnd >= 0) {
8389                return selectionEnd;
8390            }
8391        }
8392        return super.getAccessibilityCursorPosition();
8393    }
8394
8395    /**
8396     * @hide
8397     */
8398    @Override
8399    public void setAccessibilityCursorPosition(int index) {
8400        if (getAccessibilityCursorPosition() == index) {
8401            return;
8402        }
8403        if (TextUtils.isEmpty(getContentDescription())) {
8404            if (index >= 0 && index <= mText.length()) {
8405                Selection.setSelection((Spannable) mText, index);
8406            } else {
8407                Selection.removeSelection((Spannable) mText);
8408            }
8409        } else {
8410            super.setAccessibilityCursorPosition(index);
8411        }
8412    }
8413
8414    /**
8415     * User interface state that is stored by TextView for implementing
8416     * {@link View#onSaveInstanceState}.
8417     */
8418    public static class SavedState extends BaseSavedState {
8419        int selStart;
8420        int selEnd;
8421        CharSequence text;
8422        boolean frozenWithFocus;
8423        CharSequence error;
8424
8425        SavedState(Parcelable superState) {
8426            super(superState);
8427        }
8428
8429        @Override
8430        public void writeToParcel(Parcel out, int flags) {
8431            super.writeToParcel(out, flags);
8432            out.writeInt(selStart);
8433            out.writeInt(selEnd);
8434            out.writeInt(frozenWithFocus ? 1 : 0);
8435            TextUtils.writeToParcel(text, out, flags);
8436
8437            if (error == null) {
8438                out.writeInt(0);
8439            } else {
8440                out.writeInt(1);
8441                TextUtils.writeToParcel(error, out, flags);
8442            }
8443        }
8444
8445        @Override
8446        public String toString() {
8447            String str = "TextView.SavedState{"
8448                    + Integer.toHexString(System.identityHashCode(this))
8449                    + " start=" + selStart + " end=" + selEnd;
8450            if (text != null) {
8451                str += " text=" + text;
8452            }
8453            return str + "}";
8454        }
8455
8456        @SuppressWarnings("hiding")
8457        public static final Parcelable.Creator<SavedState> CREATOR
8458                = new Parcelable.Creator<SavedState>() {
8459            public SavedState createFromParcel(Parcel in) {
8460                return new SavedState(in);
8461            }
8462
8463            public SavedState[] newArray(int size) {
8464                return new SavedState[size];
8465            }
8466        };
8467
8468        private SavedState(Parcel in) {
8469            super(in);
8470            selStart = in.readInt();
8471            selEnd = in.readInt();
8472            frozenWithFocus = (in.readInt() != 0);
8473            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8474
8475            if (in.readInt() != 0) {
8476                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8477            }
8478        }
8479    }
8480
8481    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
8482        private char[] mChars;
8483        private int mStart, mLength;
8484
8485        public CharWrapper(char[] chars, int start, int len) {
8486            mChars = chars;
8487            mStart = start;
8488            mLength = len;
8489        }
8490
8491        /* package */ void set(char[] chars, int start, int len) {
8492            mChars = chars;
8493            mStart = start;
8494            mLength = len;
8495        }
8496
8497        public int length() {
8498            return mLength;
8499        }
8500
8501        public char charAt(int off) {
8502            return mChars[off + mStart];
8503        }
8504
8505        @Override
8506        public String toString() {
8507            return new String(mChars, mStart, mLength);
8508        }
8509
8510        public CharSequence subSequence(int start, int end) {
8511            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8512                throw new IndexOutOfBoundsException(start + ", " + end);
8513            }
8514
8515            return new String(mChars, start + mStart, end - start);
8516        }
8517
8518        public void getChars(int start, int end, char[] buf, int off) {
8519            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8520                throw new IndexOutOfBoundsException(start + ", " + end);
8521            }
8522
8523            System.arraycopy(mChars, start + mStart, buf, off, end - start);
8524        }
8525
8526        public void drawText(Canvas c, int start, int end,
8527                             float x, float y, Paint p) {
8528            c.drawText(mChars, start + mStart, end - start, x, y, p);
8529        }
8530
8531        public void drawTextRun(Canvas c, int start, int end,
8532                int contextStart, int contextEnd, float x, float y, int flags, Paint p) {
8533            int count = end - start;
8534            int contextCount = contextEnd - contextStart;
8535            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
8536                    contextCount, x, y, flags, p);
8537        }
8538
8539        public float measureText(int start, int end, Paint p) {
8540            return p.measureText(mChars, start + mStart, end - start);
8541        }
8542
8543        public int getTextWidths(int start, int end, float[] widths, Paint p) {
8544            return p.getTextWidths(mChars, start + mStart, end - start, widths);
8545        }
8546
8547        public float getTextRunAdvances(int start, int end, int contextStart,
8548                int contextEnd, int flags, float[] advances, int advancesIndex,
8549                Paint p) {
8550            int count = end - start;
8551            int contextCount = contextEnd - contextStart;
8552            return p.getTextRunAdvances(mChars, start + mStart, count,
8553                    contextStart + mStart, contextCount, flags, advances,
8554                    advancesIndex);
8555        }
8556
8557        public float getTextRunAdvances(int start, int end, int contextStart,
8558                int contextEnd, int flags, float[] advances, int advancesIndex,
8559                Paint p, int reserved) {
8560            int count = end - start;
8561            int contextCount = contextEnd - contextStart;
8562            return p.getTextRunAdvances(mChars, start + mStart, count,
8563                    contextStart + mStart, contextCount, flags, advances,
8564                    advancesIndex, reserved);
8565        }
8566
8567        public int getTextRunCursor(int contextStart, int contextEnd, int flags,
8568                int offset, int cursorOpt, Paint p) {
8569            int contextCount = contextEnd - contextStart;
8570            return p.getTextRunCursor(mChars, contextStart + mStart,
8571                    contextCount, flags, offset + mStart, cursorOpt);
8572        }
8573    }
8574
8575    private static final class Marquee extends Handler {
8576        // TODO: Add an option to configure this
8577        private static final float MARQUEE_DELTA_MAX = 0.07f;
8578        private static final int MARQUEE_DELAY = 1200;
8579        private static final int MARQUEE_RESTART_DELAY = 1200;
8580        private static final int MARQUEE_RESOLUTION = 1000 / 30;
8581        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
8582
8583        private static final byte MARQUEE_STOPPED = 0x0;
8584        private static final byte MARQUEE_STARTING = 0x1;
8585        private static final byte MARQUEE_RUNNING = 0x2;
8586
8587        private static final int MESSAGE_START = 0x1;
8588        private static final int MESSAGE_TICK = 0x2;
8589        private static final int MESSAGE_RESTART = 0x3;
8590
8591        private final WeakReference<TextView> mView;
8592
8593        private byte mStatus = MARQUEE_STOPPED;
8594        private final float mScrollUnit;
8595        private float mMaxScroll;
8596        float mMaxFadeScroll;
8597        private float mGhostStart;
8598        private float mGhostOffset;
8599        private float mFadeStop;
8600        private int mRepeatLimit;
8601
8602        float mScroll;
8603
8604        Marquee(TextView v) {
8605            final float density = v.getContext().getResources().getDisplayMetrics().density;
8606            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / MARQUEE_RESOLUTION;
8607            mView = new WeakReference<TextView>(v);
8608        }
8609
8610        @Override
8611        public void handleMessage(Message msg) {
8612            switch (msg.what) {
8613                case MESSAGE_START:
8614                    mStatus = MARQUEE_RUNNING;
8615                    tick();
8616                    break;
8617                case MESSAGE_TICK:
8618                    tick();
8619                    break;
8620                case MESSAGE_RESTART:
8621                    if (mStatus == MARQUEE_RUNNING) {
8622                        if (mRepeatLimit >= 0) {
8623                            mRepeatLimit--;
8624                        }
8625                        start(mRepeatLimit);
8626                    }
8627                    break;
8628            }
8629        }
8630
8631        void tick() {
8632            if (mStatus != MARQUEE_RUNNING) {
8633                return;
8634            }
8635
8636            removeMessages(MESSAGE_TICK);
8637
8638            final TextView textView = mView.get();
8639            if (textView != null && (textView.isFocused() || textView.isSelected())) {
8640                mScroll += mScrollUnit;
8641                if (mScroll > mMaxScroll) {
8642                    mScroll = mMaxScroll;
8643                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
8644                } else {
8645                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
8646                }
8647                textView.invalidate();
8648            }
8649        }
8650
8651        void stop() {
8652            mStatus = MARQUEE_STOPPED;
8653            removeMessages(MESSAGE_START);
8654            removeMessages(MESSAGE_RESTART);
8655            removeMessages(MESSAGE_TICK);
8656            resetScroll();
8657        }
8658
8659        private void resetScroll() {
8660            mScroll = 0.0f;
8661            final TextView textView = mView.get();
8662            if (textView != null) textView.invalidate();
8663        }
8664
8665        void start(int repeatLimit) {
8666            if (repeatLimit == 0) {
8667                stop();
8668                return;
8669            }
8670            mRepeatLimit = repeatLimit;
8671            final TextView textView = mView.get();
8672            if (textView != null && textView.mLayout != null) {
8673                mStatus = MARQUEE_STARTING;
8674                mScroll = 0.0f;
8675                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
8676                        textView.getCompoundPaddingRight();
8677                final float lineWidth = textView.mLayout.getLineWidth(0);
8678                final float gap = textWidth / 3.0f;
8679                mGhostStart = lineWidth - textWidth + gap;
8680                mMaxScroll = mGhostStart + textWidth;
8681                mGhostOffset = lineWidth + gap;
8682                mFadeStop = lineWidth + textWidth / 6.0f;
8683                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
8684
8685                textView.invalidate();
8686                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
8687            }
8688        }
8689
8690        float getGhostOffset() {
8691            return mGhostOffset;
8692        }
8693
8694        boolean shouldDrawLeftFade() {
8695            return mScroll <= mFadeStop;
8696        }
8697
8698        boolean shouldDrawGhost() {
8699            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
8700        }
8701
8702        boolean isRunning() {
8703            return mStatus == MARQUEE_RUNNING;
8704        }
8705
8706        boolean isStopped() {
8707            return mStatus == MARQUEE_STOPPED;
8708        }
8709    }
8710
8711    private class ChangeWatcher implements TextWatcher, SpanWatcher {
8712
8713        private CharSequence mBeforeText;
8714
8715        public void beforeTextChanged(CharSequence buffer, int start,
8716                                      int before, int after) {
8717            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
8718                    + " before=" + before + " after=" + after + ": " + buffer);
8719
8720            if (AccessibilityManager.getInstance(mContext).isEnabled()
8721                    && !isPasswordInputType(getInputType())
8722                    && !hasPasswordTransformationMethod()) {
8723                mBeforeText = buffer.toString();
8724            }
8725
8726            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
8727        }
8728
8729        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
8730            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
8731                    + " before=" + before + " after=" + after + ": " + buffer);
8732            TextView.this.handleTextChanged(buffer, start, before, after);
8733
8734            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
8735                    (isFocused() || isSelected() && isShown())) {
8736                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
8737                mBeforeText = null;
8738            }
8739        }
8740
8741        public void afterTextChanged(Editable buffer) {
8742            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
8743            TextView.this.sendAfterTextChanged(buffer);
8744
8745            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
8746                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
8747            }
8748        }
8749
8750        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
8751            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
8752                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
8753            TextView.this.spanChange(buf, what, s, st, e, en);
8754        }
8755
8756        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
8757            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
8758                    + " what=" + what + ": " + buf);
8759            TextView.this.spanChange(buf, what, -1, s, -1, e);
8760        }
8761
8762        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
8763            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
8764                    + " what=" + what + ": " + buf);
8765            TextView.this.spanChange(buf, what, s, -1, e, -1);
8766        }
8767    }
8768}
8769