TextView.java revision ce725cc1e209658132f7d269f13a9fa1eb7dbe74 
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 current key listener for this TextView.
1316     * This will frequently be null for non-EditText TextViews.
1317     *
1318     * @attr ref android.R.styleable#TextView_numeric
1319     * @attr ref android.R.styleable#TextView_digits
1320     * @attr ref android.R.styleable#TextView_phoneNumber
1321     * @attr ref android.R.styleable#TextView_inputMethod
1322     * @attr ref android.R.styleable#TextView_capitalize
1323     * @attr ref android.R.styleable#TextView_autoText
1324     */
1325    public final KeyListener getKeyListener() {
1326        return mEditor == null ? null : mEditor.mKeyListener;
1327    }
1328
1329    /**
1330     * Sets the key listener to be used with this TextView.  This can be null
1331     * to disallow user input.  Note that this method has significant and
1332     * subtle interactions with soft keyboards and other input method:
1333     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1334     * for important details.  Calling this method will replace the current
1335     * content type of the text view with the content type returned by the
1336     * key listener.
1337     * <p>
1338     * Be warned that if you want a TextView with a key listener or movement
1339     * method not to be focusable, or if you want a TextView without a
1340     * key listener or movement method to be focusable, you must call
1341     * {@link #setFocusable} again after calling this to get the focusability
1342     * back the way you want it.
1343     *
1344     * @attr ref android.R.styleable#TextView_numeric
1345     * @attr ref android.R.styleable#TextView_digits
1346     * @attr ref android.R.styleable#TextView_phoneNumber
1347     * @attr ref android.R.styleable#TextView_inputMethod
1348     * @attr ref android.R.styleable#TextView_capitalize
1349     * @attr ref android.R.styleable#TextView_autoText
1350     */
1351    public void setKeyListener(KeyListener input) {
1352        setKeyListenerOnly(input);
1353        fixFocusableAndClickableSettings();
1354
1355        if (input != null) {
1356            createEditorIfNeeded();
1357            try {
1358                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1359            } catch (IncompatibleClassChangeError e) {
1360                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1361            }
1362            // Change inputType, without affecting transformation.
1363            // No need to applySingleLine since mSingleLine is unchanged.
1364            setInputTypeSingleLine(mSingleLine);
1365        } else {
1366            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1367        }
1368
1369        InputMethodManager imm = InputMethodManager.peekInstance();
1370        if (imm != null) imm.restartInput(this);
1371    }
1372
1373    private void setKeyListenerOnly(KeyListener input) {
1374        if (mEditor == null && input == null) return; // null is the default value
1375
1376        createEditorIfNeeded();
1377        if (mEditor.mKeyListener != input) {
1378            mEditor.mKeyListener = input;
1379            if (input != null && !(mText instanceof Editable)) {
1380                setText(mText);
1381            }
1382
1383            setFilters((Editable) mText, mFilters);
1384        }
1385    }
1386
1387    /**
1388     * @return the movement method being used for this TextView.
1389     * This will frequently be null for non-EditText TextViews.
1390     */
1391    public final MovementMethod getMovementMethod() {
1392        return mMovement;
1393    }
1394
1395    /**
1396     * Sets the movement method (arrow key handler) to be used for
1397     * this TextView.  This can be null to disallow using the arrow keys
1398     * to move the cursor or scroll the view.
1399     * <p>
1400     * Be warned that if you want a TextView with a key listener or movement
1401     * method not to be focusable, or if you want a TextView without a
1402     * key listener or movement method to be focusable, you must call
1403     * {@link #setFocusable} again after calling this to get the focusability
1404     * back the way you want it.
1405     */
1406    public final void setMovementMethod(MovementMethod movement) {
1407        if (mMovement != movement) {
1408            mMovement = movement;
1409
1410            if (movement != null && !(mText instanceof Spannable)) {
1411                setText(mText);
1412            }
1413
1414            fixFocusableAndClickableSettings();
1415
1416            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1417            // mMovement
1418            if (mEditor != null) mEditor.prepareCursorControllers();
1419        }
1420    }
1421
1422    private void fixFocusableAndClickableSettings() {
1423        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1424            setFocusable(true);
1425            setClickable(true);
1426            setLongClickable(true);
1427        } else {
1428            setFocusable(false);
1429            setClickable(false);
1430            setLongClickable(false);
1431        }
1432    }
1433
1434    /**
1435     * @return the current transformation method for this TextView.
1436     * This will frequently be null except for single-line and password
1437     * fields.
1438     *
1439     * @attr ref android.R.styleable#TextView_password
1440     * @attr ref android.R.styleable#TextView_singleLine
1441     */
1442    public final TransformationMethod getTransformationMethod() {
1443        return mTransformation;
1444    }
1445
1446    /**
1447     * Sets the transformation that is applied to the text that this
1448     * TextView is displaying.
1449     *
1450     * @attr ref android.R.styleable#TextView_password
1451     * @attr ref android.R.styleable#TextView_singleLine
1452     */
1453    public final void setTransformationMethod(TransformationMethod method) {
1454        if (method == mTransformation) {
1455            // Avoid the setText() below if the transformation is
1456            // the same.
1457            return;
1458        }
1459        if (mTransformation != null) {
1460            if (mText instanceof Spannable) {
1461                ((Spannable) mText).removeSpan(mTransformation);
1462            }
1463        }
1464
1465        mTransformation = method;
1466
1467        if (method instanceof TransformationMethod2) {
1468            TransformationMethod2 method2 = (TransformationMethod2) method;
1469            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1470            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1471        } else {
1472            mAllowTransformationLengthChange = false;
1473        }
1474
1475        setText(mText);
1476
1477        if (hasPasswordTransformationMethod()) {
1478            notifyAccessibilityStateChanged();
1479        }
1480    }
1481
1482    /**
1483     * Returns the top padding of the view, plus space for the top
1484     * Drawable if any.
1485     */
1486    public int getCompoundPaddingTop() {
1487        final Drawables dr = mDrawables;
1488        if (dr == null || dr.mDrawableTop == null) {
1489            return mPaddingTop;
1490        } else {
1491            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1492        }
1493    }
1494
1495    /**
1496     * Returns the bottom padding of the view, plus space for the bottom
1497     * Drawable if any.
1498     */
1499    public int getCompoundPaddingBottom() {
1500        final Drawables dr = mDrawables;
1501        if (dr == null || dr.mDrawableBottom == null) {
1502            return mPaddingBottom;
1503        } else {
1504            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1505        }
1506    }
1507
1508    /**
1509     * Returns the left padding of the view, plus space for the left
1510     * Drawable if any.
1511     */
1512    public int getCompoundPaddingLeft() {
1513        final Drawables dr = mDrawables;
1514        if (dr == null || dr.mDrawableLeft == null) {
1515            return mPaddingLeft;
1516        } else {
1517            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1518        }
1519    }
1520
1521    /**
1522     * Returns the right padding of the view, plus space for the right
1523     * Drawable if any.
1524     */
1525    public int getCompoundPaddingRight() {
1526        final Drawables dr = mDrawables;
1527        if (dr == null || dr.mDrawableRight == null) {
1528            return mPaddingRight;
1529        } else {
1530            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1531        }
1532    }
1533
1534    /**
1535     * Returns the start padding of the view, plus space for the start
1536     * Drawable if any.
1537     */
1538    public int getCompoundPaddingStart() {
1539        resolveDrawables();
1540        switch(getResolvedLayoutDirection()) {
1541            default:
1542            case LAYOUT_DIRECTION_LTR:
1543                return getCompoundPaddingLeft();
1544            case LAYOUT_DIRECTION_RTL:
1545                return getCompoundPaddingRight();
1546        }
1547    }
1548
1549    /**
1550     * Returns the end padding of the view, plus space for the end
1551     * Drawable if any.
1552     */
1553    public int getCompoundPaddingEnd() {
1554        resolveDrawables();
1555        switch(getResolvedLayoutDirection()) {
1556            default:
1557            case LAYOUT_DIRECTION_LTR:
1558                return getCompoundPaddingRight();
1559            case LAYOUT_DIRECTION_RTL:
1560                return getCompoundPaddingLeft();
1561        }
1562    }
1563
1564    /**
1565     * Returns the extended top padding of the view, including both the
1566     * top Drawable if any and any extra space to keep more than maxLines
1567     * of text from showing.  It is only valid to call this after measuring.
1568     */
1569    public int getExtendedPaddingTop() {
1570        if (mMaxMode != LINES) {
1571            return getCompoundPaddingTop();
1572        }
1573
1574        if (mLayout.getLineCount() <= mMaximum) {
1575            return getCompoundPaddingTop();
1576        }
1577
1578        int top = getCompoundPaddingTop();
1579        int bottom = getCompoundPaddingBottom();
1580        int viewht = getHeight() - top - bottom;
1581        int layoutht = mLayout.getLineTop(mMaximum);
1582
1583        if (layoutht >= viewht) {
1584            return top;
1585        }
1586
1587        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1588        if (gravity == Gravity.TOP) {
1589            return top;
1590        } else if (gravity == Gravity.BOTTOM) {
1591            return top + viewht - layoutht;
1592        } else { // (gravity == Gravity.CENTER_VERTICAL)
1593            return top + (viewht - layoutht) / 2;
1594        }
1595    }
1596
1597    /**
1598     * Returns the extended bottom padding of the view, including both the
1599     * bottom Drawable if any and any extra space to keep more than maxLines
1600     * of text from showing.  It is only valid to call this after measuring.
1601     */
1602    public int getExtendedPaddingBottom() {
1603        if (mMaxMode != LINES) {
1604            return getCompoundPaddingBottom();
1605        }
1606
1607        if (mLayout.getLineCount() <= mMaximum) {
1608            return getCompoundPaddingBottom();
1609        }
1610
1611        int top = getCompoundPaddingTop();
1612        int bottom = getCompoundPaddingBottom();
1613        int viewht = getHeight() - top - bottom;
1614        int layoutht = mLayout.getLineTop(mMaximum);
1615
1616        if (layoutht >= viewht) {
1617            return bottom;
1618        }
1619
1620        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1621        if (gravity == Gravity.TOP) {
1622            return bottom + viewht - layoutht;
1623        } else if (gravity == Gravity.BOTTOM) {
1624            return bottom;
1625        } else { // (gravity == Gravity.CENTER_VERTICAL)
1626            return bottom + (viewht - layoutht) / 2;
1627        }
1628    }
1629
1630    /**
1631     * Returns the total left padding of the view, including the left
1632     * Drawable if any.
1633     */
1634    public int getTotalPaddingLeft() {
1635        return getCompoundPaddingLeft();
1636    }
1637
1638    /**
1639     * Returns the total right padding of the view, including the right
1640     * Drawable if any.
1641     */
1642    public int getTotalPaddingRight() {
1643        return getCompoundPaddingRight();
1644    }
1645
1646    /**
1647     * Returns the total start padding of the view, including the start
1648     * Drawable if any.
1649     */
1650    public int getTotalPaddingStart() {
1651        return getCompoundPaddingStart();
1652    }
1653
1654    /**
1655     * Returns the total end padding of the view, including the end
1656     * Drawable if any.
1657     */
1658    public int getTotalPaddingEnd() {
1659        return getCompoundPaddingEnd();
1660    }
1661
1662    /**
1663     * Returns the total top padding of the view, including the top
1664     * Drawable if any, the extra space to keep more than maxLines
1665     * from showing, and the vertical offset for gravity, if any.
1666     */
1667    public int getTotalPaddingTop() {
1668        return getExtendedPaddingTop() + getVerticalOffset(true);
1669    }
1670
1671    /**
1672     * Returns the total bottom padding of the view, including the bottom
1673     * Drawable if any, the extra space to keep more than maxLines
1674     * from showing, and the vertical offset for gravity, if any.
1675     */
1676    public int getTotalPaddingBottom() {
1677        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1678    }
1679
1680    /**
1681     * Sets the Drawables (if any) to appear to the left of, above,
1682     * to the right of, and below the text.  Use null if you do not
1683     * want a Drawable there.  The Drawables must already have had
1684     * {@link Drawable#setBounds} called.
1685     *
1686     * @attr ref android.R.styleable#TextView_drawableLeft
1687     * @attr ref android.R.styleable#TextView_drawableTop
1688     * @attr ref android.R.styleable#TextView_drawableRight
1689     * @attr ref android.R.styleable#TextView_drawableBottom
1690     */
1691    public void setCompoundDrawables(Drawable left, Drawable top,
1692                                     Drawable right, Drawable bottom) {
1693        Drawables dr = mDrawables;
1694
1695        final boolean drawables = left != null || top != null
1696                || right != null || bottom != null;
1697
1698        if (!drawables) {
1699            // Clearing drawables...  can we free the data structure?
1700            if (dr != null) {
1701                if (dr.mDrawablePadding == 0) {
1702                    mDrawables = null;
1703                } else {
1704                    // We need to retain the last set padding, so just clear
1705                    // out all of the fields in the existing structure.
1706                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
1707                    dr.mDrawableLeft = null;
1708                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1709                    dr.mDrawableTop = null;
1710                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
1711                    dr.mDrawableRight = null;
1712                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1713                    dr.mDrawableBottom = null;
1714                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1715                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1716                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1717                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1718                }
1719            }
1720        } else {
1721            if (dr == null) {
1722                mDrawables = dr = new Drawables();
1723            }
1724
1725            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
1726                dr.mDrawableLeft.setCallback(null);
1727            }
1728            dr.mDrawableLeft = left;
1729
1730            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1731                dr.mDrawableTop.setCallback(null);
1732            }
1733            dr.mDrawableTop = top;
1734
1735            if (dr.mDrawableRight != right && dr.mDrawableRight != null) {
1736                dr.mDrawableRight.setCallback(null);
1737            }
1738            dr.mDrawableRight = right;
1739
1740            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1741                dr.mDrawableBottom.setCallback(null);
1742            }
1743            dr.mDrawableBottom = bottom;
1744
1745            final Rect compoundRect = dr.mCompoundRect;
1746            int[] state;
1747
1748            state = getDrawableState();
1749
1750            if (left != null) {
1751                left.setState(state);
1752                left.copyBounds(compoundRect);
1753                left.setCallback(this);
1754                dr.mDrawableSizeLeft = compoundRect.width();
1755                dr.mDrawableHeightLeft = compoundRect.height();
1756            } else {
1757                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1758            }
1759
1760            if (right != null) {
1761                right.setState(state);
1762                right.copyBounds(compoundRect);
1763                right.setCallback(this);
1764                dr.mDrawableSizeRight = compoundRect.width();
1765                dr.mDrawableHeightRight = compoundRect.height();
1766            } else {
1767                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1768            }
1769
1770            if (top != null) {
1771                top.setState(state);
1772                top.copyBounds(compoundRect);
1773                top.setCallback(this);
1774                dr.mDrawableSizeTop = compoundRect.height();
1775                dr.mDrawableWidthTop = compoundRect.width();
1776            } else {
1777                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1778            }
1779
1780            if (bottom != null) {
1781                bottom.setState(state);
1782                bottom.copyBounds(compoundRect);
1783                bottom.setCallback(this);
1784                dr.mDrawableSizeBottom = compoundRect.height();
1785                dr.mDrawableWidthBottom = compoundRect.width();
1786            } else {
1787                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1788            }
1789        }
1790
1791        invalidate();
1792        requestLayout();
1793    }
1794
1795    /**
1796     * Sets the Drawables (if any) to appear to the left of, above,
1797     * to the right of, and below the text.  Use 0 if you do not
1798     * want a Drawable there. The Drawables' bounds will be set to
1799     * their intrinsic bounds.
1800     *
1801     * @param left Resource identifier of the left Drawable.
1802     * @param top Resource identifier of the top Drawable.
1803     * @param right Resource identifier of the right Drawable.
1804     * @param bottom Resource identifier of the bottom Drawable.
1805     *
1806     * @attr ref android.R.styleable#TextView_drawableLeft
1807     * @attr ref android.R.styleable#TextView_drawableTop
1808     * @attr ref android.R.styleable#TextView_drawableRight
1809     * @attr ref android.R.styleable#TextView_drawableBottom
1810     */
1811    @android.view.RemotableViewMethod
1812    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1813        final Resources resources = getContext().getResources();
1814        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null,
1815                top != 0 ? resources.getDrawable(top) : null,
1816                right != 0 ? resources.getDrawable(right) : null,
1817                bottom != 0 ? resources.getDrawable(bottom) : null);
1818    }
1819
1820    /**
1821     * Sets the Drawables (if any) to appear to the left of, above,
1822     * to the right of, and below the text.  Use null if you do not
1823     * want a Drawable there. The Drawables' bounds will be set to
1824     * their intrinsic bounds.
1825     *
1826     * @attr ref android.R.styleable#TextView_drawableLeft
1827     * @attr ref android.R.styleable#TextView_drawableTop
1828     * @attr ref android.R.styleable#TextView_drawableRight
1829     * @attr ref android.R.styleable#TextView_drawableBottom
1830     */
1831    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1832            Drawable right, Drawable bottom) {
1833
1834        if (left != null) {
1835            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1836        }
1837        if (right != null) {
1838            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1839        }
1840        if (top != null) {
1841            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1842        }
1843        if (bottom != null) {
1844            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
1845        }
1846        setCompoundDrawables(left, top, right, bottom);
1847    }
1848
1849    /**
1850     * Sets the Drawables (if any) to appear to the start of, above,
1851     * to the end of, and below the text.  Use null if you do not
1852     * want a Drawable there.  The Drawables must already have had
1853     * {@link Drawable#setBounds} called.
1854     *
1855     * @attr ref android.R.styleable#TextView_drawableStart
1856     * @attr ref android.R.styleable#TextView_drawableTop
1857     * @attr ref android.R.styleable#TextView_drawableEnd
1858     * @attr ref android.R.styleable#TextView_drawableBottom
1859     */
1860    public void setCompoundDrawablesRelative(Drawable start, Drawable top,
1861                                     Drawable end, Drawable bottom) {
1862        Drawables dr = mDrawables;
1863
1864        final boolean drawables = start != null || top != null
1865                || end != null || bottom != null;
1866
1867        if (!drawables) {
1868            // Clearing drawables...  can we free the data structure?
1869            if (dr != null) {
1870                if (dr.mDrawablePadding == 0) {
1871                    mDrawables = null;
1872                } else {
1873                    // We need to retain the last set padding, so just clear
1874                    // out all of the fields in the existing structure.
1875                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
1876                    dr.mDrawableStart = null;
1877                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1878                    dr.mDrawableTop = null;
1879                    if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
1880                    dr.mDrawableEnd = null;
1881                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1882                    dr.mDrawableBottom = null;
1883                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1884                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1885                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1886                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1887                }
1888            }
1889        } else {
1890            if (dr == null) {
1891                mDrawables = dr = new Drawables();
1892            }
1893
1894            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
1895                dr.mDrawableStart.setCallback(null);
1896            }
1897            dr.mDrawableStart = start;
1898
1899            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1900                dr.mDrawableTop.setCallback(null);
1901            }
1902            dr.mDrawableTop = top;
1903
1904            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
1905                dr.mDrawableEnd.setCallback(null);
1906            }
1907            dr.mDrawableEnd = end;
1908
1909            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1910                dr.mDrawableBottom.setCallback(null);
1911            }
1912            dr.mDrawableBottom = bottom;
1913
1914            final Rect compoundRect = dr.mCompoundRect;
1915            int[] state;
1916
1917            state = getDrawableState();
1918
1919            if (start != null) {
1920                start.setState(state);
1921                start.copyBounds(compoundRect);
1922                start.setCallback(this);
1923                dr.mDrawableSizeStart = compoundRect.width();
1924                dr.mDrawableHeightStart = compoundRect.height();
1925            } else {
1926                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1927            }
1928
1929            if (end != null) {
1930                end.setState(state);
1931                end.copyBounds(compoundRect);
1932                end.setCallback(this);
1933                dr.mDrawableSizeEnd = compoundRect.width();
1934                dr.mDrawableHeightEnd = compoundRect.height();
1935            } else {
1936                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1937            }
1938
1939            if (top != null) {
1940                top.setState(state);
1941                top.copyBounds(compoundRect);
1942                top.setCallback(this);
1943                dr.mDrawableSizeTop = compoundRect.height();
1944                dr.mDrawableWidthTop = compoundRect.width();
1945            } else {
1946                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1947            }
1948
1949            if (bottom != null) {
1950                bottom.setState(state);
1951                bottom.copyBounds(compoundRect);
1952                bottom.setCallback(this);
1953                dr.mDrawableSizeBottom = compoundRect.height();
1954                dr.mDrawableWidthBottom = compoundRect.width();
1955            } else {
1956                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1957            }
1958        }
1959
1960        resolveDrawables();
1961        invalidate();
1962        requestLayout();
1963    }
1964
1965    /**
1966     * Sets the Drawables (if any) to appear to the start of, above,
1967     * to the end of, and below the text.  Use 0 if you do not
1968     * want a Drawable there. The Drawables' bounds will be set to
1969     * their intrinsic bounds.
1970     *
1971     * @param start Resource identifier of the start Drawable.
1972     * @param top Resource identifier of the top Drawable.
1973     * @param end Resource identifier of the end Drawable.
1974     * @param bottom Resource identifier of the bottom Drawable.
1975     *
1976     * @attr ref android.R.styleable#TextView_drawableStart
1977     * @attr ref android.R.styleable#TextView_drawableTop
1978     * @attr ref android.R.styleable#TextView_drawableEnd
1979     * @attr ref android.R.styleable#TextView_drawableBottom
1980     */
1981    @android.view.RemotableViewMethod
1982    public void setCompoundDrawablesRelativeWithIntrinsicBounds(int start, int top, int end,
1983            int bottom) {
1984        resetResolvedDrawables();
1985        final Resources resources = getContext().getResources();
1986        setCompoundDrawablesRelativeWithIntrinsicBounds(
1987                start != 0 ? resources.getDrawable(start) : null,
1988                top != 0 ? resources.getDrawable(top) : null,
1989                end != 0 ? resources.getDrawable(end) : null,
1990                bottom != 0 ? resources.getDrawable(bottom) : null);
1991    }
1992
1993    /**
1994     * Sets the Drawables (if any) to appear to the start of, above,
1995     * to the end of, and below the text.  Use null if you do not
1996     * want a Drawable there. The Drawables' bounds will be set to
1997     * their intrinsic bounds.
1998     *
1999     * @attr ref android.R.styleable#TextView_drawableStart
2000     * @attr ref android.R.styleable#TextView_drawableTop
2001     * @attr ref android.R.styleable#TextView_drawableEnd
2002     * @attr ref android.R.styleable#TextView_drawableBottom
2003     */
2004    public void setCompoundDrawablesRelativeWithIntrinsicBounds(Drawable start, Drawable top,
2005            Drawable end, Drawable bottom) {
2006
2007        resetResolvedDrawables();
2008        if (start != null) {
2009            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2010        }
2011        if (end != null) {
2012            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2013        }
2014        if (top != null) {
2015            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2016        }
2017        if (bottom != null) {
2018            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2019        }
2020        setCompoundDrawablesRelative(start, top, end, bottom);
2021    }
2022
2023    /**
2024     * Returns drawables for the left, top, right, and bottom borders.
2025     *
2026     * @attr ref android.R.styleable#TextView_drawableLeft
2027     * @attr ref android.R.styleable#TextView_drawableTop
2028     * @attr ref android.R.styleable#TextView_drawableRight
2029     * @attr ref android.R.styleable#TextView_drawableBottom
2030     */
2031    public Drawable[] getCompoundDrawables() {
2032        final Drawables dr = mDrawables;
2033        if (dr != null) {
2034            return new Drawable[] {
2035                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
2036            };
2037        } else {
2038            return new Drawable[] { null, null, null, null };
2039        }
2040    }
2041
2042    /**
2043     * Returns drawables for the start, top, end, and bottom borders.
2044     *
2045     * @attr ref android.R.styleable#TextView_drawableStart
2046     * @attr ref android.R.styleable#TextView_drawableTop
2047     * @attr ref android.R.styleable#TextView_drawableEnd
2048     * @attr ref android.R.styleable#TextView_drawableBottom
2049     */
2050    public Drawable[] getCompoundDrawablesRelative() {
2051        final Drawables dr = mDrawables;
2052        if (dr != null) {
2053            return new Drawable[] {
2054                dr.mDrawableStart, dr.mDrawableTop, dr.mDrawableEnd, dr.mDrawableBottom
2055            };
2056        } else {
2057            return new Drawable[] { null, null, null, null };
2058        }
2059    }
2060
2061    /**
2062     * Sets the size of the padding between the compound drawables and
2063     * the text.
2064     *
2065     * @attr ref android.R.styleable#TextView_drawablePadding
2066     */
2067    @android.view.RemotableViewMethod
2068    public void setCompoundDrawablePadding(int pad) {
2069        Drawables dr = mDrawables;
2070        if (pad == 0) {
2071            if (dr != null) {
2072                dr.mDrawablePadding = pad;
2073            }
2074        } else {
2075            if (dr == null) {
2076                mDrawables = dr = new Drawables();
2077            }
2078            dr.mDrawablePadding = pad;
2079        }
2080
2081        invalidate();
2082        requestLayout();
2083    }
2084
2085    /**
2086     * Returns the padding between the compound drawables and the text.
2087     *
2088     * @attr ref android.R.styleable#TextView_drawablePadding
2089     */
2090    public int getCompoundDrawablePadding() {
2091        final Drawables dr = mDrawables;
2092        return dr != null ? dr.mDrawablePadding : 0;
2093    }
2094
2095    @Override
2096    public void setPadding(int left, int top, int right, int bottom) {
2097        if (left != mPaddingLeft ||
2098            right != mPaddingRight ||
2099            top != mPaddingTop ||
2100            bottom != mPaddingBottom) {
2101            nullLayouts();
2102        }
2103
2104        // the super call will requestLayout()
2105        super.setPadding(left, top, right, bottom);
2106        invalidate();
2107    }
2108
2109    @Override
2110    public void setPaddingRelative(int start, int top, int end, int bottom) {
2111        if (start != getPaddingStart() ||
2112            end != getPaddingEnd() ||
2113            top != mPaddingTop ||
2114            bottom != mPaddingBottom) {
2115            nullLayouts();
2116        }
2117
2118        // the super call will requestLayout()
2119        super.setPaddingRelative(start, top, end, bottom);
2120        invalidate();
2121    }
2122
2123    /**
2124     * Gets the autolink mask of the text.  See {@link
2125     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2126     * possible values.
2127     *
2128     * @attr ref android.R.styleable#TextView_autoLink
2129     */
2130    public final int getAutoLinkMask() {
2131        return mAutoLinkMask;
2132    }
2133
2134    /**
2135     * Sets the text color, size, style, hint color, and highlight color
2136     * from the specified TextAppearance resource.
2137     */
2138    public void setTextAppearance(Context context, int resid) {
2139        TypedArray appearance =
2140            context.obtainStyledAttributes(resid,
2141                                           com.android.internal.R.styleable.TextAppearance);
2142
2143        int color;
2144        ColorStateList colors;
2145        int ts;
2146
2147        color = appearance.getColor(
2148                com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
2149        if (color != 0) {
2150            setHighlightColor(color);
2151        }
2152
2153        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2154                                              TextAppearance_textColor);
2155        if (colors != null) {
2156            setTextColor(colors);
2157        }
2158
2159        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
2160                                              TextAppearance_textSize, 0);
2161        if (ts != 0) {
2162            setRawTextSize(ts);
2163        }
2164
2165        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2166                                              TextAppearance_textColorHint);
2167        if (colors != null) {
2168            setHintTextColor(colors);
2169        }
2170
2171        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2172                                              TextAppearance_textColorLink);
2173        if (colors != null) {
2174            setLinkTextColor(colors);
2175        }
2176
2177        String familyName;
2178        int typefaceIndex, styleIndex;
2179
2180        familyName = appearance.getString(com.android.internal.R.styleable.
2181                                          TextAppearance_fontFamily);
2182        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
2183                                          TextAppearance_typeface, -1);
2184        styleIndex = appearance.getInt(com.android.internal.R.styleable.
2185                                       TextAppearance_textStyle, -1);
2186
2187        setTypefaceFromAttrs(familyName, typefaceIndex, styleIndex);
2188
2189        if (appearance.getBoolean(com.android.internal.R.styleable.TextAppearance_textAllCaps,
2190                false)) {
2191            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2192        }
2193
2194        appearance.recycle();
2195    }
2196
2197    /**
2198     * @return the size (in pixels) of the default text size in this TextView.
2199     */
2200    @ViewDebug.ExportedProperty(category = "text")
2201    public float getTextSize() {
2202        return mTextPaint.getTextSize();
2203    }
2204
2205    /**
2206     * Set the default text size to the given value, interpreted as "scaled
2207     * pixel" units.  This size is adjusted based on the current density and
2208     * user font size preference.
2209     *
2210     * @param size The scaled pixel size.
2211     *
2212     * @attr ref android.R.styleable#TextView_textSize
2213     */
2214    @android.view.RemotableViewMethod
2215    public void setTextSize(float size) {
2216        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2217    }
2218
2219    /**
2220     * Set the default text size to a given unit and value.  See {@link
2221     * TypedValue} for the possible dimension units.
2222     *
2223     * @param unit The desired dimension unit.
2224     * @param size The desired size in the given units.
2225     *
2226     * @attr ref android.R.styleable#TextView_textSize
2227     */
2228    public void setTextSize(int unit, float size) {
2229        Context c = getContext();
2230        Resources r;
2231
2232        if (c == null)
2233            r = Resources.getSystem();
2234        else
2235            r = c.getResources();
2236
2237        setRawTextSize(TypedValue.applyDimension(
2238            unit, size, r.getDisplayMetrics()));
2239    }
2240
2241    private void setRawTextSize(float size) {
2242        if (size != mTextPaint.getTextSize()) {
2243            mTextPaint.setTextSize(size);
2244
2245            if (mLayout != null) {
2246                nullLayouts();
2247                requestLayout();
2248                invalidate();
2249            }
2250        }
2251    }
2252
2253    /**
2254     * @return the extent by which text is currently being stretched
2255     * horizontally.  This will usually be 1.
2256     */
2257    public float getTextScaleX() {
2258        return mTextPaint.getTextScaleX();
2259    }
2260
2261    /**
2262     * Sets the extent by which text should be stretched horizontally.
2263     *
2264     * @attr ref android.R.styleable#TextView_textScaleX
2265     */
2266    @android.view.RemotableViewMethod
2267    public void setTextScaleX(float size) {
2268        if (size != mTextPaint.getTextScaleX()) {
2269            mUserSetTextScaleX = true;
2270            mTextPaint.setTextScaleX(size);
2271
2272            if (mLayout != null) {
2273                nullLayouts();
2274                requestLayout();
2275                invalidate();
2276            }
2277        }
2278    }
2279
2280    /**
2281     * Sets the typeface and style in which the text should be displayed.
2282     * Note that not all Typeface families actually have bold and italic
2283     * variants, so you may need to use
2284     * {@link #setTypeface(Typeface, int)} to get the appearance
2285     * that you actually want.
2286     *
2287     * @see #getTypeface()
2288     *
2289     * @attr ref android.R.styleable#TextView_fontFamily
2290     * @attr ref android.R.styleable#TextView_typeface
2291     * @attr ref android.R.styleable#TextView_textStyle
2292     */
2293    public void setTypeface(Typeface tf) {
2294        if (mTextPaint.getTypeface() != tf) {
2295            mTextPaint.setTypeface(tf);
2296
2297            if (mLayout != null) {
2298                nullLayouts();
2299                requestLayout();
2300                invalidate();
2301            }
2302        }
2303    }
2304
2305    /**
2306     * @return the current typeface and style in which the text is being
2307     * displayed.
2308     *
2309     * @see #setTypeface(Typeface)
2310     *
2311     * @attr ref android.R.styleable#TextView_fontFamily
2312     * @attr ref android.R.styleable#TextView_typeface
2313     * @attr ref android.R.styleable#TextView_textStyle
2314     */
2315    public Typeface getTypeface() {
2316        return mTextPaint.getTypeface();
2317    }
2318
2319    /**
2320     * Sets the text color for all the states (normal, selected,
2321     * focused) to be this color.
2322     *
2323     * @see #setTextColor(ColorStateList)
2324     * @see #getTextColors()
2325     *
2326     * @attr ref android.R.styleable#TextView_textColor
2327     */
2328    @android.view.RemotableViewMethod
2329    public void setTextColor(int color) {
2330        mTextColor = ColorStateList.valueOf(color);
2331        updateTextColors();
2332    }
2333
2334    /**
2335     * Sets the text color.
2336     *
2337     * @see #setTextColor(int)
2338     * @see #getTextColors()
2339     * @see #setHintTextColor(ColorStateList)
2340     * @see #setLinkTextColor(ColorStateList)
2341     *
2342     * @attr ref android.R.styleable#TextView_textColor
2343     */
2344    public void setTextColor(ColorStateList colors) {
2345        if (colors == null) {
2346            throw new NullPointerException();
2347        }
2348
2349        mTextColor = colors;
2350        updateTextColors();
2351    }
2352
2353    /**
2354     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
2355     *
2356     * @see #setTextColor(ColorStateList)
2357     * @see #setTextColor(int)
2358     *
2359     * @attr ref android.R.styleable#TextView_textColor
2360     */
2361    public final ColorStateList getTextColors() {
2362        return mTextColor;
2363    }
2364
2365    /**
2366     * <p>Return the current color selected for normal text.</p>
2367     *
2368     * @return Returns the current text color.
2369     */
2370    public final int getCurrentTextColor() {
2371        return mCurTextColor;
2372    }
2373
2374    /**
2375     * Sets the color used to display the selection highlight.
2376     *
2377     * @attr ref android.R.styleable#TextView_textColorHighlight
2378     */
2379    @android.view.RemotableViewMethod
2380    public void setHighlightColor(int color) {
2381        if (mHighlightColor != color) {
2382            mHighlightColor = color;
2383            invalidate();
2384        }
2385    }
2386
2387    /**
2388     * @return the color used to display the selection highlight
2389     *
2390     * @see #setHighlightColor(int)
2391     *
2392     * @attr ref android.R.styleable#TextView_textColorHighlight
2393     */
2394    public int getHighlightColor() {
2395        return mHighlightColor;
2396    }
2397
2398    /**
2399     * Sets whether the soft input method will be made visible when this
2400     * TextView gets focused. The default is true.
2401     * @hide
2402     */
2403    @android.view.RemotableViewMethod
2404    public final void setShowSoftInputOnFocus(boolean show) {
2405        createEditorIfNeeded();
2406        mEditor.mShowSoftInputOnFocus = show;
2407    }
2408
2409    /**
2410     * Returns whether the soft input method will be made visible when this
2411     * TextView gets focused. The default is true.
2412     * @hide
2413     */
2414    public final boolean getShowSoftInputOnFocus() {
2415        // When there is no Editor, return default true value
2416        return mEditor == null || mEditor.mShowSoftInputOnFocus;
2417    }
2418
2419    /**
2420     * Gives the text a shadow of the specified radius and color, the specified
2421     * distance from its normal position.
2422     *
2423     * @attr ref android.R.styleable#TextView_shadowColor
2424     * @attr ref android.R.styleable#TextView_shadowDx
2425     * @attr ref android.R.styleable#TextView_shadowDy
2426     * @attr ref android.R.styleable#TextView_shadowRadius
2427     */
2428    public void setShadowLayer(float radius, float dx, float dy, int color) {
2429        mTextPaint.setShadowLayer(radius, dx, dy, color);
2430
2431        mShadowRadius = radius;
2432        mShadowDx = dx;
2433        mShadowDy = dy;
2434
2435        // Will change text clip region
2436        if (mEditor != null) mEditor.invalidateTextDisplayList();
2437        invalidate();
2438    }
2439
2440    /**
2441     * Gets the radius of the shadow layer.
2442     *
2443     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
2444     *
2445     * @see #setShadowLayer(float, float, float, int)
2446     *
2447     * @attr ref android.R.styleable#TextView_shadowRadius
2448     */
2449    public float getShadowRadius() {
2450        return mShadowRadius;
2451    }
2452
2453    /**
2454     * @return the horizontal offset of the shadow layer
2455     *
2456     * @see #setShadowLayer(float, float, float, int)
2457     *
2458     * @attr ref android.R.styleable#TextView_shadowDx
2459     */
2460    public float getShadowDx() {
2461        return mShadowDx;
2462    }
2463
2464    /**
2465     * @return the vertical offset of the shadow layer
2466     *
2467     * @see #setShadowLayer(float, float, float, int)
2468     *
2469     * @attr ref android.R.styleable#TextView_shadowDy
2470     */
2471    public float getShadowDy() {
2472        return mShadowDy;
2473    }
2474
2475    /**
2476     * @return the color of the shadow layer
2477     *
2478     * @see #setShadowLayer(float, float, float, int)
2479     *
2480     * @attr ref android.R.styleable#TextView_shadowColor
2481     */
2482    public int getShadowColor() {
2483        return mTextPaint.shadowColor;
2484    }
2485
2486    /**
2487     * @return the base paint used for the text.  Please use this only to
2488     * consult the Paint's properties and not to change them.
2489     */
2490    public TextPaint getPaint() {
2491        return mTextPaint;
2492    }
2493
2494    /**
2495     * Sets the autolink mask of the text.  See {@link
2496     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2497     * possible values.
2498     *
2499     * @attr ref android.R.styleable#TextView_autoLink
2500     */
2501    @android.view.RemotableViewMethod
2502    public final void setAutoLinkMask(int mask) {
2503        mAutoLinkMask = mask;
2504    }
2505
2506    /**
2507     * Sets whether the movement method will automatically be set to
2508     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2509     * set to nonzero and links are detected in {@link #setText}.
2510     * The default is true.
2511     *
2512     * @attr ref android.R.styleable#TextView_linksClickable
2513     */
2514    @android.view.RemotableViewMethod
2515    public final void setLinksClickable(boolean whether) {
2516        mLinksClickable = whether;
2517    }
2518
2519    /**
2520     * Returns whether the movement method will automatically be set to
2521     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2522     * set to nonzero and links are detected in {@link #setText}.
2523     * The default is true.
2524     *
2525     * @attr ref android.R.styleable#TextView_linksClickable
2526     */
2527    public final boolean getLinksClickable() {
2528        return mLinksClickable;
2529    }
2530
2531    /**
2532     * Returns the list of URLSpans attached to the text
2533     * (by {@link Linkify} or otherwise) if any.  You can call
2534     * {@link URLSpan#getURL} on them to find where they link to
2535     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
2536     * to find the region of the text they are attached to.
2537     */
2538    public URLSpan[] getUrls() {
2539        if (mText instanceof Spanned) {
2540            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
2541        } else {
2542            return new URLSpan[0];
2543        }
2544    }
2545
2546    /**
2547     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
2548     * TextView.
2549     *
2550     * @see #setHintTextColor(ColorStateList)
2551     * @see #getHintTextColors()
2552     * @see #setTextColor(int)
2553     *
2554     * @attr ref android.R.styleable#TextView_textColorHint
2555     */
2556    @android.view.RemotableViewMethod
2557    public final void setHintTextColor(int color) {
2558        mHintTextColor = ColorStateList.valueOf(color);
2559        updateTextColors();
2560    }
2561
2562    /**
2563     * Sets the color of the hint text.
2564     *
2565     * @see #getHintTextColors()
2566     * @see #setHintTextColor(int)
2567     * @see #setTextColor(ColorStateList)
2568     * @see #setLinkTextColor(ColorStateList)
2569     *
2570     * @attr ref android.R.styleable#TextView_textColorHint
2571     */
2572    public final void setHintTextColor(ColorStateList colors) {
2573        mHintTextColor = colors;
2574        updateTextColors();
2575    }
2576
2577    /**
2578     * @return the color of the hint text, for the different states of this TextView.
2579     *
2580     * @see #setHintTextColor(ColorStateList)
2581     * @see #setHintTextColor(int)
2582     * @see #setTextColor(ColorStateList)
2583     * @see #setLinkTextColor(ColorStateList)
2584     *
2585     * @attr ref android.R.styleable#TextView_textColorHint
2586     */
2587    public final ColorStateList getHintTextColors() {
2588        return mHintTextColor;
2589    }
2590
2591    /**
2592     * <p>Return the current color selected to paint the hint text.</p>
2593     *
2594     * @return Returns the current hint text color.
2595     */
2596    public final int getCurrentHintTextColor() {
2597        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
2598    }
2599
2600    /**
2601     * Sets the color of links in the text.
2602     *
2603     * @see #setLinkTextColor(ColorStateList)
2604     * @see #getLinkTextColors()
2605     *
2606     * @attr ref android.R.styleable#TextView_textColorLink
2607     */
2608    @android.view.RemotableViewMethod
2609    public final void setLinkTextColor(int color) {
2610        mLinkTextColor = ColorStateList.valueOf(color);
2611        updateTextColors();
2612    }
2613
2614    /**
2615     * Sets the color of links in the text.
2616     *
2617     * @see #setLinkTextColor(int)
2618     * @see #getLinkTextColors()
2619     * @see #setTextColor(ColorStateList)
2620     * @see #setHintTextColor(ColorStateList)
2621     *
2622     * @attr ref android.R.styleable#TextView_textColorLink
2623     */
2624    public final void setLinkTextColor(ColorStateList colors) {
2625        mLinkTextColor = colors;
2626        updateTextColors();
2627    }
2628
2629    /**
2630     * @return the list of colors used to paint the links in the text, for the different states of
2631     * this TextView
2632     *
2633     * @see #setLinkTextColor(ColorStateList)
2634     * @see #setLinkTextColor(int)
2635     *
2636     * @attr ref android.R.styleable#TextView_textColorLink
2637     */
2638    public final ColorStateList getLinkTextColors() {
2639        return mLinkTextColor;
2640    }
2641
2642    /**
2643     * Sets the horizontal alignment of the text and the
2644     * vertical gravity that will be used when there is extra space
2645     * in the TextView beyond what is required for the text itself.
2646     *
2647     * @see android.view.Gravity
2648     * @attr ref android.R.styleable#TextView_gravity
2649     */
2650    public void setGravity(int gravity) {
2651        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
2652            gravity |= Gravity.START;
2653        }
2654        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
2655            gravity |= Gravity.TOP;
2656        }
2657
2658        boolean newLayout = false;
2659
2660        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
2661            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
2662            newLayout = true;
2663        }
2664
2665        if (gravity != mGravity) {
2666            invalidate();
2667            mLayoutAlignment = null;
2668        }
2669
2670        mGravity = gravity;
2671
2672        if (mLayout != null && newLayout) {
2673            // XXX this is heavy-handed because no actual content changes.
2674            int want = mLayout.getWidth();
2675            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
2676
2677            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
2678                          mRight - mLeft - getCompoundPaddingLeft() -
2679                          getCompoundPaddingRight(), true);
2680        }
2681    }
2682
2683    /**
2684     * Returns the horizontal and vertical alignment of this TextView.
2685     *
2686     * @see android.view.Gravity
2687     * @attr ref android.R.styleable#TextView_gravity
2688     */
2689    public int getGravity() {
2690        return mGravity;
2691    }
2692
2693    /**
2694     * @return the flags on the Paint being used to display the text.
2695     * @see Paint#getFlags
2696     */
2697    public int getPaintFlags() {
2698        return mTextPaint.getFlags();
2699    }
2700
2701    /**
2702     * Sets flags on the Paint being used to display the text and
2703     * reflows the text if they are different from the old flags.
2704     * @see Paint#setFlags
2705     */
2706    @android.view.RemotableViewMethod
2707    public void setPaintFlags(int flags) {
2708        if (mTextPaint.getFlags() != flags) {
2709            mTextPaint.setFlags(flags);
2710
2711            if (mLayout != null) {
2712                nullLayouts();
2713                requestLayout();
2714                invalidate();
2715            }
2716        }
2717    }
2718
2719    /**
2720     * Sets whether the text should be allowed to be wider than the
2721     * View is.  If false, it will be wrapped to the width of the View.
2722     *
2723     * @attr ref android.R.styleable#TextView_scrollHorizontally
2724     */
2725    public void setHorizontallyScrolling(boolean whether) {
2726        if (mHorizontallyScrolling != whether) {
2727            mHorizontallyScrolling = whether;
2728
2729            if (mLayout != null) {
2730                nullLayouts();
2731                requestLayout();
2732                invalidate();
2733            }
2734        }
2735    }
2736
2737    /**
2738     * Returns whether the text is allowed to be wider than the View is.
2739     * If false, the text will be wrapped to the width of the View.
2740     *
2741     * @attr ref android.R.styleable#TextView_scrollHorizontally
2742     * @hide
2743     */
2744    public boolean getHorizontallyScrolling() {
2745        return mHorizontallyScrolling;
2746    }
2747
2748    /**
2749     * Makes the TextView at least this many lines tall.
2750     *
2751     * Setting this value overrides any other (minimum) height setting. A single line TextView will
2752     * set this value to 1.
2753     *
2754     * @see #getMinLines()
2755     *
2756     * @attr ref android.R.styleable#TextView_minLines
2757     */
2758    @android.view.RemotableViewMethod
2759    public void setMinLines(int minlines) {
2760        mMinimum = minlines;
2761        mMinMode = LINES;
2762
2763        requestLayout();
2764        invalidate();
2765    }
2766
2767    /**
2768     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
2769     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
2770     *
2771     * @see #setMinLines(int)
2772     *
2773     * @attr ref android.R.styleable#TextView_minLines
2774     */
2775    public int getMinLines() {
2776        return mMinMode == LINES ? mMinimum : -1;
2777    }
2778
2779    /**
2780     * Makes the TextView at least this many pixels tall.
2781     *
2782     * Setting this value overrides any other (minimum) number of lines setting.
2783     *
2784     * @attr ref android.R.styleable#TextView_minHeight
2785     */
2786    @android.view.RemotableViewMethod
2787    public void setMinHeight(int minHeight) {
2788        mMinimum = minHeight;
2789        mMinMode = PIXELS;
2790
2791        requestLayout();
2792        invalidate();
2793    }
2794
2795    /**
2796     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
2797     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
2798     *
2799     * @see #setMinHeight(int)
2800     *
2801     * @attr ref android.R.styleable#TextView_minHeight
2802     */
2803    public int getMinHeight() {
2804        return mMinMode == PIXELS ? mMinimum : -1;
2805    }
2806
2807    /**
2808     * Makes the TextView at most this many lines tall.
2809     *
2810     * Setting this value overrides any other (maximum) height setting.
2811     *
2812     * @attr ref android.R.styleable#TextView_maxLines
2813     */
2814    @android.view.RemotableViewMethod
2815    public void setMaxLines(int maxlines) {
2816        mMaximum = maxlines;
2817        mMaxMode = LINES;
2818
2819        requestLayout();
2820        invalidate();
2821    }
2822
2823    /**
2824     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
2825     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
2826     *
2827     * @see #setMaxLines(int)
2828     *
2829     * @attr ref android.R.styleable#TextView_maxLines
2830     */
2831    public int getMaxLines() {
2832        return mMaxMode == LINES ? mMaximum : -1;
2833    }
2834
2835    /**
2836     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
2837     * {@link #setMaxLines(int)} method.
2838     *
2839     * Setting this value overrides any other (maximum) number of lines setting.
2840     *
2841     * @attr ref android.R.styleable#TextView_maxHeight
2842     */
2843    @android.view.RemotableViewMethod
2844    public void setMaxHeight(int maxHeight) {
2845        mMaximum = maxHeight;
2846        mMaxMode = PIXELS;
2847
2848        requestLayout();
2849        invalidate();
2850    }
2851
2852    /**
2853     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
2854     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
2855     *
2856     * @see #setMaxHeight(int)
2857     *
2858     * @attr ref android.R.styleable#TextView_maxHeight
2859     */
2860    public int getMaxHeight() {
2861        return mMaxMode == PIXELS ? mMaximum : -1;
2862    }
2863
2864    /**
2865     * Makes the TextView exactly this many lines tall.
2866     *
2867     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2868     * height setting. A single line TextView will set this value to 1.
2869     *
2870     * @attr ref android.R.styleable#TextView_lines
2871     */
2872    @android.view.RemotableViewMethod
2873    public void setLines(int lines) {
2874        mMaximum = mMinimum = lines;
2875        mMaxMode = mMinMode = LINES;
2876
2877        requestLayout();
2878        invalidate();
2879    }
2880
2881    /**
2882     * Makes the TextView exactly this many pixels tall.
2883     * You could do the same thing by specifying this number in the
2884     * LayoutParams.
2885     *
2886     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2887     * height setting.
2888     *
2889     * @attr ref android.R.styleable#TextView_height
2890     */
2891    @android.view.RemotableViewMethod
2892    public void setHeight(int pixels) {
2893        mMaximum = mMinimum = pixels;
2894        mMaxMode = mMinMode = PIXELS;
2895
2896        requestLayout();
2897        invalidate();
2898    }
2899
2900    /**
2901     * Makes the TextView at least this many ems wide
2902     *
2903     * @attr ref android.R.styleable#TextView_minEms
2904     */
2905    @android.view.RemotableViewMethod
2906    public void setMinEms(int minems) {
2907        mMinWidth = minems;
2908        mMinWidthMode = EMS;
2909
2910        requestLayout();
2911        invalidate();
2912    }
2913
2914    /**
2915     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
2916     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
2917     *
2918     * @see #setMinEms(int)
2919     * @see #setEms(int)
2920     *
2921     * @attr ref android.R.styleable#TextView_minEms
2922     */
2923    public int getMinEms() {
2924        return mMinWidthMode == EMS ? mMinWidth : -1;
2925    }
2926
2927    /**
2928     * Makes the TextView at least this many pixels wide
2929     *
2930     * @attr ref android.R.styleable#TextView_minWidth
2931     */
2932    @android.view.RemotableViewMethod
2933    public void setMinWidth(int minpixels) {
2934        mMinWidth = minpixels;
2935        mMinWidthMode = PIXELS;
2936
2937        requestLayout();
2938        invalidate();
2939    }
2940
2941    /**
2942     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
2943     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
2944     *
2945     * @see #setMinWidth(int)
2946     * @see #setWidth(int)
2947     *
2948     * @attr ref android.R.styleable#TextView_minWidth
2949     */
2950    public int getMinWidth() {
2951        return mMinWidthMode == PIXELS ? mMinWidth : -1;
2952    }
2953
2954    /**
2955     * Makes the TextView at most this many ems wide
2956     *
2957     * @attr ref android.R.styleable#TextView_maxEms
2958     */
2959    @android.view.RemotableViewMethod
2960    public void setMaxEms(int maxems) {
2961        mMaxWidth = maxems;
2962        mMaxWidthMode = EMS;
2963
2964        requestLayout();
2965        invalidate();
2966    }
2967
2968    /**
2969     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
2970     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
2971     *
2972     * @see #setMaxEms(int)
2973     * @see #setEms(int)
2974     *
2975     * @attr ref android.R.styleable#TextView_maxEms
2976     */
2977    public int getMaxEms() {
2978        return mMaxWidthMode == EMS ? mMaxWidth : -1;
2979    }
2980
2981    /**
2982     * Makes the TextView at most this many pixels wide
2983     *
2984     * @attr ref android.R.styleable#TextView_maxWidth
2985     */
2986    @android.view.RemotableViewMethod
2987    public void setMaxWidth(int maxpixels) {
2988        mMaxWidth = maxpixels;
2989        mMaxWidthMode = PIXELS;
2990
2991        requestLayout();
2992        invalidate();
2993    }
2994
2995    /**
2996     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
2997     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
2998     *
2999     * @see #setMaxWidth(int)
3000     * @see #setWidth(int)
3001     *
3002     * @attr ref android.R.styleable#TextView_maxWidth
3003     */
3004    public int getMaxWidth() {
3005        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3006    }
3007
3008    /**
3009     * Makes the TextView exactly this many ems wide
3010     *
3011     * @see #setMaxEms(int)
3012     * @see #setMinEms(int)
3013     * @see #getMinEms()
3014     * @see #getMaxEms()
3015     *
3016     * @attr ref android.R.styleable#TextView_ems
3017     */
3018    @android.view.RemotableViewMethod
3019    public void setEms(int ems) {
3020        mMaxWidth = mMinWidth = ems;
3021        mMaxWidthMode = mMinWidthMode = EMS;
3022
3023        requestLayout();
3024        invalidate();
3025    }
3026
3027    /**
3028     * Makes the TextView exactly this many pixels wide.
3029     * You could do the same thing by specifying this number in the
3030     * LayoutParams.
3031     *
3032     * @see #setMaxWidth(int)
3033     * @see #setMinWidth(int)
3034     * @see #getMinWidth()
3035     * @see #getMaxWidth()
3036     *
3037     * @attr ref android.R.styleable#TextView_width
3038     */
3039    @android.view.RemotableViewMethod
3040    public void setWidth(int pixels) {
3041        mMaxWidth = mMinWidth = pixels;
3042        mMaxWidthMode = mMinWidthMode = PIXELS;
3043
3044        requestLayout();
3045        invalidate();
3046    }
3047
3048    /**
3049     * Sets line spacing for this TextView.  Each line will have its height
3050     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3051     *
3052     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3053     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3054     */
3055    public void setLineSpacing(float add, float mult) {
3056        if (mSpacingAdd != add || mSpacingMult != mult) {
3057            mSpacingAdd = add;
3058            mSpacingMult = mult;
3059
3060            if (mLayout != null) {
3061                nullLayouts();
3062                requestLayout();
3063                invalidate();
3064            }
3065        }
3066    }
3067
3068    /**
3069     * Gets the line spacing multiplier
3070     *
3071     * @return the value by which each line's height is multiplied to get its actual height.
3072     *
3073     * @see #setLineSpacing(float, float)
3074     * @see #getLineSpacingExtra()
3075     *
3076     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3077     */
3078    public float getLineSpacingMultiplier() {
3079        return mSpacingMult;
3080    }
3081
3082    /**
3083     * Gets the line spacing extra space
3084     *
3085     * @return the extra space that is added to the height of each lines of this TextView.
3086     *
3087     * @see #setLineSpacing(float, float)
3088     * @see #getLineSpacingMultiplier()
3089     *
3090     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3091     */
3092    public float getLineSpacingExtra() {
3093        return mSpacingAdd;
3094    }
3095
3096    /**
3097     * Convenience method: Append the specified text to the TextView's
3098     * display buffer, upgrading it to BufferType.EDITABLE if it was
3099     * not already editable.
3100     */
3101    public final void append(CharSequence text) {
3102        append(text, 0, text.length());
3103    }
3104
3105    /**
3106     * Convenience method: Append the specified text slice to the TextView's
3107     * display buffer, upgrading it to BufferType.EDITABLE if it was
3108     * not already editable.
3109     */
3110    public void append(CharSequence text, int start, int end) {
3111        if (!(mText instanceof Editable)) {
3112            setText(mText, BufferType.EDITABLE);
3113        }
3114
3115        ((Editable) mText).append(text, start, end);
3116    }
3117
3118    private void updateTextColors() {
3119        boolean inval = false;
3120        int color = mTextColor.getColorForState(getDrawableState(), 0);
3121        if (color != mCurTextColor) {
3122            mCurTextColor = color;
3123            inval = true;
3124        }
3125        if (mLinkTextColor != null) {
3126            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
3127            if (color != mTextPaint.linkColor) {
3128                mTextPaint.linkColor = color;
3129                inval = true;
3130            }
3131        }
3132        if (mHintTextColor != null) {
3133            color = mHintTextColor.getColorForState(getDrawableState(), 0);
3134            if (color != mCurHintTextColor && mText.length() == 0) {
3135                mCurHintTextColor = color;
3136                inval = true;
3137            }
3138        }
3139        if (inval) {
3140            // Text needs to be redrawn with the new color
3141            if (mEditor != null) mEditor.invalidateTextDisplayList();
3142            invalidate();
3143        }
3144    }
3145
3146    @Override
3147    protected void drawableStateChanged() {
3148        super.drawableStateChanged();
3149        if (mTextColor != null && mTextColor.isStateful()
3150                || (mHintTextColor != null && mHintTextColor.isStateful())
3151                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
3152            updateTextColors();
3153        }
3154
3155        final Drawables dr = mDrawables;
3156        if (dr != null) {
3157            int[] state = getDrawableState();
3158            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
3159                dr.mDrawableTop.setState(state);
3160            }
3161            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
3162                dr.mDrawableBottom.setState(state);
3163            }
3164            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
3165                dr.mDrawableLeft.setState(state);
3166            }
3167            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
3168                dr.mDrawableRight.setState(state);
3169            }
3170            if (dr.mDrawableStart != null && dr.mDrawableStart.isStateful()) {
3171                dr.mDrawableStart.setState(state);
3172            }
3173            if (dr.mDrawableEnd != null && dr.mDrawableEnd.isStateful()) {
3174                dr.mDrawableEnd.setState(state);
3175            }
3176        }
3177    }
3178
3179    @Override
3180    public Parcelable onSaveInstanceState() {
3181        Parcelable superState = super.onSaveInstanceState();
3182
3183        // Save state if we are forced to
3184        boolean save = mFreezesText;
3185        int start = 0;
3186        int end = 0;
3187
3188        if (mText != null) {
3189            start = getSelectionStart();
3190            end = getSelectionEnd();
3191            if (start >= 0 || end >= 0) {
3192                // Or save state if there is a selection
3193                save = true;
3194            }
3195        }
3196
3197        if (save) {
3198            SavedState ss = new SavedState(superState);
3199            // XXX Should also save the current scroll position!
3200            ss.selStart = start;
3201            ss.selEnd = end;
3202
3203            if (mText instanceof Spanned) {
3204                /*
3205                 * Calling setText() strips off any ChangeWatchers;
3206                 * strip them now to avoid leaking references.
3207                 * But do it to a copy so that if there are any
3208                 * further changes to the text of this view, it
3209                 * won't get into an inconsistent state.
3210                 */
3211
3212                Spannable sp = new SpannableString(mText);
3213
3214                for (ChangeWatcher cw : sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
3215                    sp.removeSpan(cw);
3216                }
3217
3218                if (mEditor != null) {
3219                    removeMisspelledSpans(sp);
3220                    sp.removeSpan(mEditor.mSuggestionRangeSpan);
3221                }
3222
3223                ss.text = sp;
3224            } else {
3225                ss.text = mText.toString();
3226            }
3227
3228            if (isFocused() && start >= 0 && end >= 0) {
3229                ss.frozenWithFocus = true;
3230            }
3231
3232            ss.error = getError();
3233
3234            return ss;
3235        }
3236
3237        return superState;
3238    }
3239
3240    void removeMisspelledSpans(Spannable spannable) {
3241        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
3242                SuggestionSpan.class);
3243        for (int i = 0; i < suggestionSpans.length; i++) {
3244            int flags = suggestionSpans[i].getFlags();
3245            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
3246                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
3247                spannable.removeSpan(suggestionSpans[i]);
3248            }
3249        }
3250    }
3251
3252    @Override
3253    public void onRestoreInstanceState(Parcelable state) {
3254        if (!(state instanceof SavedState)) {
3255            super.onRestoreInstanceState(state);
3256            return;
3257        }
3258
3259        SavedState ss = (SavedState)state;
3260        super.onRestoreInstanceState(ss.getSuperState());
3261
3262        // XXX restore buffer type too, as well as lots of other stuff
3263        if (ss.text != null) {
3264            setText(ss.text);
3265        }
3266
3267        if (ss.selStart >= 0 && ss.selEnd >= 0) {
3268            if (mText instanceof Spannable) {
3269                int len = mText.length();
3270
3271                if (ss.selStart > len || ss.selEnd > len) {
3272                    String restored = "";
3273
3274                    if (ss.text != null) {
3275                        restored = "(restored) ";
3276                    }
3277
3278                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
3279                          "/" + ss.selEnd + " out of range for " + restored +
3280                          "text " + mText);
3281                } else {
3282                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
3283
3284                    if (ss.frozenWithFocus) {
3285                        createEditorIfNeeded();
3286                        mEditor.mFrozenWithFocus = true;
3287                    }
3288                }
3289            }
3290        }
3291
3292        if (ss.error != null) {
3293            final CharSequence error = ss.error;
3294            // Display the error later, after the first layout pass
3295            post(new Runnable() {
3296                public void run() {
3297                    setError(error);
3298                }
3299            });
3300        }
3301    }
3302
3303    /**
3304     * Control whether this text view saves its entire text contents when
3305     * freezing to an icicle, in addition to dynamic state such as cursor
3306     * position.  By default this is false, not saving the text.  Set to true
3307     * if the text in the text view is not being saved somewhere else in
3308     * persistent storage (such as in a content provider) so that if the
3309     * view is later thawed the user will not lose their data.
3310     *
3311     * @param freezesText Controls whether a frozen icicle should include the
3312     * entire text data: true to include it, false to not.
3313     *
3314     * @attr ref android.R.styleable#TextView_freezesText
3315     */
3316    @android.view.RemotableViewMethod
3317    public void setFreezesText(boolean freezesText) {
3318        mFreezesText = freezesText;
3319    }
3320
3321    /**
3322     * Return whether this text view is including its entire text contents
3323     * in frozen icicles.
3324     *
3325     * @return Returns true if text is included, false if it isn't.
3326     *
3327     * @see #setFreezesText
3328     */
3329    public boolean getFreezesText() {
3330        return mFreezesText;
3331    }
3332
3333    ///////////////////////////////////////////////////////////////////////////
3334
3335    /**
3336     * Sets the Factory used to create new Editables.
3337     */
3338    public final void setEditableFactory(Editable.Factory factory) {
3339        mEditableFactory = factory;
3340        setText(mText);
3341    }
3342
3343    /**
3344     * Sets the Factory used to create new Spannables.
3345     */
3346    public final void setSpannableFactory(Spannable.Factory factory) {
3347        mSpannableFactory = factory;
3348        setText(mText);
3349    }
3350
3351    /**
3352     * Sets the string value of the TextView. TextView <em>does not</em> accept
3353     * HTML-like formatting, which you can do with text strings in XML resource files.
3354     * To style your strings, attach android.text.style.* objects to a
3355     * {@link android.text.SpannableString SpannableString}, or see the
3356     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
3357     * Available Resource Types</a> documentation for an example of setting
3358     * formatted text in the XML resource file.
3359     *
3360     * @attr ref android.R.styleable#TextView_text
3361     */
3362    @android.view.RemotableViewMethod
3363    public final void setText(CharSequence text) {
3364        setText(text, mBufferType);
3365    }
3366
3367    /**
3368     * Like {@link #setText(CharSequence)},
3369     * except that the cursor position (if any) is retained in the new text.
3370     *
3371     * @param text The new text to place in the text view.
3372     *
3373     * @see #setText(CharSequence)
3374     */
3375    @android.view.RemotableViewMethod
3376    public final void setTextKeepState(CharSequence text) {
3377        setTextKeepState(text, mBufferType);
3378    }
3379
3380    /**
3381     * Sets the text that this TextView is to display (see
3382     * {@link #setText(CharSequence)}) and also sets whether it is stored
3383     * in a styleable/spannable buffer and whether it is editable.
3384     *
3385     * @attr ref android.R.styleable#TextView_text
3386     * @attr ref android.R.styleable#TextView_bufferType
3387     */
3388    public void setText(CharSequence text, BufferType type) {
3389        setText(text, type, true, 0);
3390
3391        if (mCharWrapper != null) {
3392            mCharWrapper.mChars = null;
3393        }
3394    }
3395
3396    private void setText(CharSequence text, BufferType type,
3397                         boolean notifyBefore, int oldlen) {
3398        if (text == null) {
3399            text = "";
3400        }
3401
3402        // If suggestions are not enabled, remove the suggestion spans from the text
3403        if (!isSuggestionsEnabled()) {
3404            text = removeSuggestionSpans(text);
3405        }
3406
3407        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
3408
3409        if (text instanceof Spanned &&
3410            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
3411            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
3412                setHorizontalFadingEdgeEnabled(true);
3413                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
3414            } else {
3415                setHorizontalFadingEdgeEnabled(false);
3416                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
3417            }
3418            setEllipsize(TextUtils.TruncateAt.MARQUEE);
3419        }
3420
3421        int n = mFilters.length;
3422        for (int i = 0; i < n; i++) {
3423            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
3424            if (out != null) {
3425                text = out;
3426            }
3427        }
3428
3429        if (notifyBefore) {
3430            if (mText != null) {
3431                oldlen = mText.length();
3432                sendBeforeTextChanged(mText, 0, oldlen, text.length());
3433            } else {
3434                sendBeforeTextChanged("", 0, 0, text.length());
3435            }
3436        }
3437
3438        boolean needEditableForNotification = false;
3439
3440        if (mListeners != null && mListeners.size() != 0) {
3441            needEditableForNotification = true;
3442        }
3443
3444        if (type == BufferType.EDITABLE || getKeyListener() != null ||
3445                needEditableForNotification) {
3446            createEditorIfNeeded();
3447            Editable t = mEditableFactory.newEditable(text);
3448            text = t;
3449            setFilters(t, mFilters);
3450            InputMethodManager imm = InputMethodManager.peekInstance();
3451            if (imm != null) imm.restartInput(this);
3452        } else if (type == BufferType.SPANNABLE || mMovement != null) {
3453            text = mSpannableFactory.newSpannable(text);
3454        } else if (!(text instanceof CharWrapper)) {
3455            text = TextUtils.stringOrSpannedString(text);
3456        }
3457
3458        if (mAutoLinkMask != 0) {
3459            Spannable s2;
3460
3461            if (type == BufferType.EDITABLE || text instanceof Spannable) {
3462                s2 = (Spannable) text;
3463            } else {
3464                s2 = mSpannableFactory.newSpannable(text);
3465            }
3466
3467            if (Linkify.addLinks(s2, mAutoLinkMask)) {
3468                text = s2;
3469                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
3470
3471                /*
3472                 * We must go ahead and set the text before changing the
3473                 * movement method, because setMovementMethod() may call
3474                 * setText() again to try to upgrade the buffer type.
3475                 */
3476                mText = text;
3477
3478                // Do not change the movement method for text that support text selection as it
3479                // would prevent an arbitrary cursor displacement.
3480                if (mLinksClickable && !textCanBeSelected()) {
3481                    setMovementMethod(LinkMovementMethod.getInstance());
3482                }
3483            }
3484        }
3485
3486        mBufferType = type;
3487        mText = text;
3488
3489        if (mTransformation == null) {
3490            mTransformed = text;
3491        } else {
3492            mTransformed = mTransformation.getTransformation(text, this);
3493        }
3494
3495        final int textLength = text.length();
3496
3497        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
3498            Spannable sp = (Spannable) text;
3499
3500            // Remove any ChangeWatchers that might have come from other TextViews.
3501            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
3502            final int count = watchers.length;
3503            for (int i = 0; i < count; i++) {
3504                sp.removeSpan(watchers[i]);
3505            }
3506
3507            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
3508
3509            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
3510                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
3511
3512            if (mEditor != null) mEditor.addSpanWatchers(sp);
3513
3514            if (mTransformation != null) {
3515                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
3516            }
3517
3518            if (mMovement != null) {
3519                mMovement.initialize(this, (Spannable) text);
3520
3521                /*
3522                 * Initializing the movement method will have set the
3523                 * selection, so reset mSelectionMoved to keep that from
3524                 * interfering with the normal on-focus selection-setting.
3525                 */
3526                if (mEditor != null) mEditor.mSelectionMoved = false;
3527            }
3528        }
3529
3530        if (mLayout != null) {
3531            checkForRelayout();
3532        }
3533
3534        sendOnTextChanged(text, 0, oldlen, textLength);
3535        onTextChanged(text, 0, oldlen, textLength);
3536
3537        if (needEditableForNotification) {
3538            sendAfterTextChanged((Editable) text);
3539        }
3540
3541        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
3542        if (mEditor != null) mEditor.prepareCursorControllers();
3543    }
3544
3545    /**
3546     * Sets the TextView to display the specified slice of the specified
3547     * char array.  You must promise that you will not change the contents
3548     * of the array except for right before another call to setText(),
3549     * since the TextView has no way to know that the text
3550     * has changed and that it needs to invalidate and re-layout.
3551     */
3552    public final void setText(char[] text, int start, int len) {
3553        int oldlen = 0;
3554
3555        if (start < 0 || len < 0 || start + len > text.length) {
3556            throw new IndexOutOfBoundsException(start + ", " + len);
3557        }
3558
3559        /*
3560         * We must do the before-notification here ourselves because if
3561         * the old text is a CharWrapper we destroy it before calling
3562         * into the normal path.
3563         */
3564        if (mText != null) {
3565            oldlen = mText.length();
3566            sendBeforeTextChanged(mText, 0, oldlen, len);
3567        } else {
3568            sendBeforeTextChanged("", 0, 0, len);
3569        }
3570
3571        if (mCharWrapper == null) {
3572            mCharWrapper = new CharWrapper(text, start, len);
3573        } else {
3574            mCharWrapper.set(text, start, len);
3575        }
3576
3577        setText(mCharWrapper, mBufferType, false, oldlen);
3578    }
3579
3580    /**
3581     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
3582     * except that the cursor position (if any) is retained in the new text.
3583     *
3584     * @see #setText(CharSequence, android.widget.TextView.BufferType)
3585     */
3586    public final void setTextKeepState(CharSequence text, BufferType type) {
3587        int start = getSelectionStart();
3588        int end = getSelectionEnd();
3589        int len = text.length();
3590
3591        setText(text, type);
3592
3593        if (start >= 0 || end >= 0) {
3594            if (mText instanceof Spannable) {
3595                Selection.setSelection((Spannable) mText,
3596                                       Math.max(0, Math.min(start, len)),
3597                                       Math.max(0, Math.min(end, len)));
3598            }
3599        }
3600    }
3601
3602    @android.view.RemotableViewMethod
3603    public final void setText(int resid) {
3604        setText(getContext().getResources().getText(resid));
3605    }
3606
3607    public final void setText(int resid, BufferType type) {
3608        setText(getContext().getResources().getText(resid), type);
3609    }
3610
3611    /**
3612     * Sets the text to be displayed when the text of the TextView is empty.
3613     * Null means to use the normal empty text. The hint does not currently
3614     * participate in determining the size of the view.
3615     *
3616     * @attr ref android.R.styleable#TextView_hint
3617     */
3618    @android.view.RemotableViewMethod
3619    public final void setHint(CharSequence hint) {
3620        mHint = TextUtils.stringOrSpannedString(hint);
3621
3622        if (mLayout != null) {
3623            checkForRelayout();
3624        }
3625
3626        if (mText.length() == 0) {
3627            invalidate();
3628        }
3629
3630        // Invalidate display list if hint is currently used
3631        if (mEditor != null && mText.length() == 0 && mHint != null) {
3632            mEditor.invalidateTextDisplayList();
3633        }
3634    }
3635
3636    /**
3637     * Sets the text to be displayed when the text of the TextView is empty,
3638     * from a resource.
3639     *
3640     * @attr ref android.R.styleable#TextView_hint
3641     */
3642    @android.view.RemotableViewMethod
3643    public final void setHint(int resid) {
3644        setHint(getContext().getResources().getText(resid));
3645    }
3646
3647    /**
3648     * Returns the hint that is displayed when the text of the TextView
3649     * is empty.
3650     *
3651     * @attr ref android.R.styleable#TextView_hint
3652     */
3653    @ViewDebug.CapturedViewProperty
3654    public CharSequence getHint() {
3655        return mHint;
3656    }
3657
3658    boolean isSingleLine() {
3659        return mSingleLine;
3660    }
3661
3662    private static boolean isMultilineInputType(int type) {
3663        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
3664            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
3665    }
3666
3667    /**
3668     * Removes the suggestion spans.
3669     */
3670    CharSequence removeSuggestionSpans(CharSequence text) {
3671       if (text instanceof Spanned) {
3672           Spannable spannable;
3673           if (text instanceof Spannable) {
3674               spannable = (Spannable) text;
3675           } else {
3676               spannable = new SpannableString(text);
3677               text = spannable;
3678           }
3679
3680           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
3681           for (int i = 0; i < spans.length; i++) {
3682               spannable.removeSpan(spans[i]);
3683           }
3684       }
3685       return text;
3686    }
3687
3688    /**
3689     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
3690     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
3691     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
3692     * then a soft keyboard will not be displayed for this text view.
3693     *
3694     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
3695     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
3696     * type.
3697     *
3698     * @see #getInputType()
3699     * @see #setRawInputType(int)
3700     * @see android.text.InputType
3701     * @attr ref android.R.styleable#TextView_inputType
3702     */
3703    public void setInputType(int type) {
3704        final boolean wasPassword = isPasswordInputType(getInputType());
3705        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
3706        setInputType(type, false);
3707        final boolean isPassword = isPasswordInputType(type);
3708        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
3709        boolean forceUpdate = false;
3710        if (isPassword) {
3711            setTransformationMethod(PasswordTransformationMethod.getInstance());
3712            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
3713        } else if (isVisiblePassword) {
3714            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3715                forceUpdate = true;
3716            }
3717            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
3718        } else if (wasPassword || wasVisiblePassword) {
3719            // not in password mode, clean up typeface and transformation
3720            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
3721            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3722                forceUpdate = true;
3723            }
3724        }
3725
3726        boolean singleLine = !isMultilineInputType(type);
3727
3728        // We need to update the single line mode if it has changed or we
3729        // were previously in password mode.
3730        if (mSingleLine != singleLine || forceUpdate) {
3731            // Change single line mode, but only change the transformation if
3732            // we are not in password mode.
3733            applySingleLine(singleLine, !isPassword, true);
3734        }
3735
3736        if (!isSuggestionsEnabled()) {
3737            mText = removeSuggestionSpans(mText);
3738        }
3739
3740        InputMethodManager imm = InputMethodManager.peekInstance();
3741        if (imm != null) imm.restartInput(this);
3742    }
3743
3744    /**
3745     * It would be better to rely on the input type for everything. A password inputType should have
3746     * a password transformation. We should hence use isPasswordInputType instead of this method.
3747     *
3748     * We should:
3749     * - Call setInputType in setKeyListener instead of changing the input type directly (which
3750     * would install the correct transformation).
3751     * - Refuse the installation of a non-password transformation in setTransformation if the input
3752     * type is password.
3753     *
3754     * However, this is like this for legacy reasons and we cannot break existing apps. This method
3755     * is useful since it matches what the user can see (obfuscated text or not).
3756     *
3757     * @return true if the current transformation method is of the password type.
3758     */
3759    private boolean hasPasswordTransformationMethod() {
3760        return mTransformation instanceof PasswordTransformationMethod;
3761    }
3762
3763    private static boolean isPasswordInputType(int inputType) {
3764        final int variation =
3765                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3766        return variation
3767                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
3768                || variation
3769                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
3770                || variation
3771                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
3772    }
3773
3774    private static boolean isVisiblePasswordInputType(int inputType) {
3775        final int variation =
3776                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3777        return variation
3778                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
3779    }
3780
3781    /**
3782     * Directly change the content type integer of the text view, without
3783     * modifying any other state.
3784     * @see #setInputType(int)
3785     * @see android.text.InputType
3786     * @attr ref android.R.styleable#TextView_inputType
3787     */
3788    public void setRawInputType(int type) {
3789        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
3790        createEditorIfNeeded();
3791        mEditor.mInputType = type;
3792    }
3793
3794    private void setInputType(int type, boolean direct) {
3795        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
3796        KeyListener input;
3797        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
3798            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
3799            TextKeyListener.Capitalize cap;
3800            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
3801                cap = TextKeyListener.Capitalize.CHARACTERS;
3802            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
3803                cap = TextKeyListener.Capitalize.WORDS;
3804            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
3805                cap = TextKeyListener.Capitalize.SENTENCES;
3806            } else {
3807                cap = TextKeyListener.Capitalize.NONE;
3808            }
3809            input = TextKeyListener.getInstance(autotext, cap);
3810        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
3811            input = DigitsKeyListener.getInstance(
3812                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
3813                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
3814        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
3815            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
3816                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
3817                    input = DateKeyListener.getInstance();
3818                    break;
3819                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
3820                    input = TimeKeyListener.getInstance();
3821                    break;
3822                default:
3823                    input = DateTimeKeyListener.getInstance();
3824                    break;
3825            }
3826        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
3827            input = DialerKeyListener.getInstance();
3828        } else {
3829            input = TextKeyListener.getInstance();
3830        }
3831        setRawInputType(type);
3832        if (direct) {
3833            createEditorIfNeeded();
3834            mEditor.mKeyListener = input;
3835        } else {
3836            setKeyListenerOnly(input);
3837        }
3838    }
3839
3840    /**
3841     * Get the type of the editable content.
3842     *
3843     * @see #setInputType(int)
3844     * @see android.text.InputType
3845     */
3846    public int getInputType() {
3847        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
3848    }
3849
3850    /**
3851     * Change the editor type integer associated with the text view, which
3852     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
3853     * has focus.
3854     * @see #getImeOptions
3855     * @see android.view.inputmethod.EditorInfo
3856     * @attr ref android.R.styleable#TextView_imeOptions
3857     */
3858    public void setImeOptions(int imeOptions) {
3859        createEditorIfNeeded();
3860        mEditor.createInputContentTypeIfNeeded();
3861        mEditor.mInputContentType.imeOptions = imeOptions;
3862    }
3863
3864    /**
3865     * Get the type of the IME editor.
3866     *
3867     * @see #setImeOptions(int)
3868     * @see android.view.inputmethod.EditorInfo
3869     */
3870    public int getImeOptions() {
3871        return mEditor != null && mEditor.mInputContentType != null
3872                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
3873    }
3874
3875    /**
3876     * Change the custom IME action associated with the text view, which
3877     * will be reported to an IME with {@link EditorInfo#actionLabel}
3878     * and {@link EditorInfo#actionId} when it has focus.
3879     * @see #getImeActionLabel
3880     * @see #getImeActionId
3881     * @see android.view.inputmethod.EditorInfo
3882     * @attr ref android.R.styleable#TextView_imeActionLabel
3883     * @attr ref android.R.styleable#TextView_imeActionId
3884     */
3885    public void setImeActionLabel(CharSequence label, int actionId) {
3886        createEditorIfNeeded();
3887        mEditor.createInputContentTypeIfNeeded();
3888        mEditor.mInputContentType.imeActionLabel = label;
3889        mEditor.mInputContentType.imeActionId = actionId;
3890    }
3891
3892    /**
3893     * Get the IME action label previous set with {@link #setImeActionLabel}.
3894     *
3895     * @see #setImeActionLabel
3896     * @see android.view.inputmethod.EditorInfo
3897     */
3898    public CharSequence getImeActionLabel() {
3899        return mEditor != null && mEditor.mInputContentType != null
3900                ? mEditor.mInputContentType.imeActionLabel : null;
3901    }
3902
3903    /**
3904     * Get the IME action ID previous set with {@link #setImeActionLabel}.
3905     *
3906     * @see #setImeActionLabel
3907     * @see android.view.inputmethod.EditorInfo
3908     */
3909    public int getImeActionId() {
3910        return mEditor != null && mEditor.mInputContentType != null
3911                ? mEditor.mInputContentType.imeActionId : 0;
3912    }
3913
3914    /**
3915     * Set a special listener to be called when an action is performed
3916     * on the text view.  This will be called when the enter key is pressed,
3917     * or when an action supplied to the IME is selected by the user.  Setting
3918     * this means that the normal hard key event will not insert a newline
3919     * into the text view, even if it is multi-line; holding down the ALT
3920     * modifier will, however, allow the user to insert a newline character.
3921     */
3922    public void setOnEditorActionListener(OnEditorActionListener l) {
3923        createEditorIfNeeded();
3924        mEditor.createInputContentTypeIfNeeded();
3925        mEditor.mInputContentType.onEditorActionListener = l;
3926    }
3927
3928    /**
3929     * Called when an attached input method calls
3930     * {@link InputConnection#performEditorAction(int)
3931     * InputConnection.performEditorAction()}
3932     * for this text view.  The default implementation will call your action
3933     * listener supplied to {@link #setOnEditorActionListener}, or perform
3934     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
3935     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
3936     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
3937     * EditorInfo.IME_ACTION_DONE}.
3938     *
3939     * <p>For backwards compatibility, if no IME options have been set and the
3940     * text view would not normally advance focus on enter, then
3941     * the NEXT and DONE actions received here will be turned into an enter
3942     * key down/up pair to go through the normal key handling.
3943     *
3944     * @param actionCode The code of the action being performed.
3945     *
3946     * @see #setOnEditorActionListener
3947     */
3948    public void onEditorAction(int actionCode) {
3949        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
3950        if (ict != null) {
3951            if (ict.onEditorActionListener != null) {
3952                if (ict.onEditorActionListener.onEditorAction(this,
3953                        actionCode, null)) {
3954                    return;
3955                }
3956            }
3957
3958            // This is the handling for some default action.
3959            // Note that for backwards compatibility we don't do this
3960            // default handling if explicit ime options have not been given,
3961            // instead turning this into the normal enter key codes that an
3962            // app may be expecting.
3963            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
3964                View v = focusSearch(FOCUS_FORWARD);
3965                if (v != null) {
3966                    if (!v.requestFocus(FOCUS_FORWARD)) {
3967                        throw new IllegalStateException("focus search returned a view " +
3968                                "that wasn't able to take focus!");
3969                    }
3970                }
3971                return;
3972
3973            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
3974                View v = focusSearch(FOCUS_BACKWARD);
3975                if (v != null) {
3976                    if (!v.requestFocus(FOCUS_BACKWARD)) {
3977                        throw new IllegalStateException("focus search returned a view " +
3978                                "that wasn't able to take focus!");
3979                    }
3980                }
3981                return;
3982
3983            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
3984                InputMethodManager imm = InputMethodManager.peekInstance();
3985                if (imm != null && imm.isActive(this)) {
3986                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
3987                }
3988                return;
3989            }
3990        }
3991
3992        ViewRootImpl viewRootImpl = getViewRootImpl();
3993        if (viewRootImpl != null) {
3994            long eventTime = SystemClock.uptimeMillis();
3995            viewRootImpl.dispatchKeyFromIme(
3996                    new KeyEvent(eventTime, eventTime,
3997                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
3998                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
3999                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4000                    | KeyEvent.FLAG_EDITOR_ACTION));
4001            viewRootImpl.dispatchKeyFromIme(
4002                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4003                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4004                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4005                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4006                    | KeyEvent.FLAG_EDITOR_ACTION));
4007        }
4008    }
4009
4010    /**
4011     * Set the private content type of the text, which is the
4012     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4013     * field that will be filled in when creating an input connection.
4014     *
4015     * @see #getPrivateImeOptions()
4016     * @see EditorInfo#privateImeOptions
4017     * @attr ref android.R.styleable#TextView_privateImeOptions
4018     */
4019    public void setPrivateImeOptions(String type) {
4020        createEditorIfNeeded();
4021        mEditor.createInputContentTypeIfNeeded();
4022        mEditor.mInputContentType.privateImeOptions = type;
4023    }
4024
4025    /**
4026     * Get the private type of the content.
4027     *
4028     * @see #setPrivateImeOptions(String)
4029     * @see EditorInfo#privateImeOptions
4030     */
4031    public String getPrivateImeOptions() {
4032        return mEditor != null && mEditor.mInputContentType != null
4033                ? mEditor.mInputContentType.privateImeOptions : null;
4034    }
4035
4036    /**
4037     * Set the extra input data of the text, which is the
4038     * {@link EditorInfo#extras TextBoxAttribute.extras}
4039     * Bundle that will be filled in when creating an input connection.  The
4040     * given integer is the resource ID of an XML resource holding an
4041     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4042     *
4043     * @see #getInputExtras(boolean)
4044     * @see EditorInfo#extras
4045     * @attr ref android.R.styleable#TextView_editorExtras
4046     */
4047    public void setInputExtras(int xmlResId) throws XmlPullParserException, IOException {
4048        createEditorIfNeeded();
4049        XmlResourceParser parser = getResources().getXml(xmlResId);
4050        mEditor.createInputContentTypeIfNeeded();
4051        mEditor.mInputContentType.extras = new Bundle();
4052        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4053    }
4054
4055    /**
4056     * Retrieve the input extras currently associated with the text view, which
4057     * can be viewed as well as modified.
4058     *
4059     * @param create If true, the extras will be created if they don't already
4060     * exist.  Otherwise, null will be returned if none have been created.
4061     * @see #setInputExtras(int)
4062     * @see EditorInfo#extras
4063     * @attr ref android.R.styleable#TextView_editorExtras
4064     */
4065    public Bundle getInputExtras(boolean create) {
4066        if (mEditor == null && !create) return null;
4067        createEditorIfNeeded();
4068        if (mEditor.mInputContentType == null) {
4069            if (!create) return null;
4070            mEditor.createInputContentTypeIfNeeded();
4071        }
4072        if (mEditor.mInputContentType.extras == null) {
4073            if (!create) return null;
4074            mEditor.mInputContentType.extras = new Bundle();
4075        }
4076        return mEditor.mInputContentType.extras;
4077    }
4078
4079    /**
4080     * Returns the error message that was set to be displayed with
4081     * {@link #setError}, or <code>null</code> if no error was set
4082     * or if it the error was cleared by the widget after user input.
4083     */
4084    public CharSequence getError() {
4085        return mEditor == null ? null : mEditor.mError;
4086    }
4087
4088    /**
4089     * Sets the right-hand compound drawable of the TextView to the "error"
4090     * icon and sets an error message that will be displayed in a popup when
4091     * the TextView has focus.  The icon and error message will be reset to
4092     * null when any key events cause changes to the TextView's text.  If the
4093     * <code>error</code> is <code>null</code>, the error message and icon
4094     * will be cleared.
4095     */
4096    @android.view.RemotableViewMethod
4097    public void setError(CharSequence error) {
4098        if (error == null) {
4099            setError(null, null);
4100        } else {
4101            Drawable dr = getContext().getResources().
4102                getDrawable(com.android.internal.R.drawable.indicator_input_error);
4103
4104            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
4105            setError(error, dr);
4106        }
4107    }
4108
4109    /**
4110     * Sets the right-hand compound drawable of the TextView to the specified
4111     * icon and sets an error message that will be displayed in a popup when
4112     * the TextView has focus.  The icon and error message will be reset to
4113     * null when any key events cause changes to the TextView's text.  The
4114     * drawable must already have had {@link Drawable#setBounds} set on it.
4115     * If the <code>error</code> is <code>null</code>, the error message will
4116     * be cleared (and you should provide a <code>null</code> icon as well).
4117     */
4118    public void setError(CharSequence error, Drawable icon) {
4119        createEditorIfNeeded();
4120        mEditor.setError(error, icon);
4121    }
4122
4123    @Override
4124    protected boolean setFrame(int l, int t, int r, int b) {
4125        boolean result = super.setFrame(l, t, r, b);
4126
4127        if (mEditor != null) mEditor.setFrame();
4128
4129        restartMarqueeIfNeeded();
4130
4131        return result;
4132    }
4133
4134    private void restartMarqueeIfNeeded() {
4135        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4136            mRestartMarquee = false;
4137            startMarquee();
4138        }
4139    }
4140
4141    /**
4142     * Sets the list of input filters that will be used if the buffer is
4143     * Editable. Has no effect otherwise.
4144     *
4145     * @attr ref android.R.styleable#TextView_maxLength
4146     */
4147    public void setFilters(InputFilter[] filters) {
4148        if (filters == null) {
4149            throw new IllegalArgumentException();
4150        }
4151
4152        mFilters = filters;
4153
4154        if (mText instanceof Editable) {
4155            setFilters((Editable) mText, filters);
4156        }
4157    }
4158
4159    /**
4160     * Sets the list of input filters on the specified Editable,
4161     * and includes mInput in the list if it is an InputFilter.
4162     */
4163    private void setFilters(Editable e, InputFilter[] filters) {
4164        if (mEditor != null && mEditor.mKeyListener instanceof InputFilter) {
4165            InputFilter[] nf = new InputFilter[filters.length + 1];
4166
4167            System.arraycopy(filters, 0, nf, 0, filters.length);
4168            nf[filters.length] = (InputFilter) mEditor.mKeyListener;
4169
4170            e.setFilters(nf);
4171        } else {
4172            e.setFilters(filters);
4173        }
4174    }
4175
4176    /**
4177     * Returns the current list of input filters.
4178     *
4179     * @attr ref android.R.styleable#TextView_maxLength
4180     */
4181    public InputFilter[] getFilters() {
4182        return mFilters;
4183    }
4184
4185    /////////////////////////////////////////////////////////////////////////
4186
4187    int getVerticalOffset(boolean forceNormal) {
4188        int voffset = 0;
4189        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4190
4191        Layout l = mLayout;
4192        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4193            l = mHintLayout;
4194        }
4195
4196        if (gravity != Gravity.TOP) {
4197            int boxht;
4198
4199            if (l == mHintLayout) {
4200                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
4201                        getCompoundPaddingBottom();
4202            } else {
4203                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
4204                        getExtendedPaddingBottom();
4205            }
4206            int textht = l.getHeight();
4207
4208            if (textht < boxht) {
4209                if (gravity == Gravity.BOTTOM)
4210                    voffset = boxht - textht;
4211                else // (gravity == Gravity.CENTER_VERTICAL)
4212                    voffset = (boxht - textht) >> 1;
4213            }
4214        }
4215        return voffset;
4216    }
4217
4218    private int getBottomVerticalOffset(boolean forceNormal) {
4219        int voffset = 0;
4220        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4221
4222        Layout l = mLayout;
4223        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4224            l = mHintLayout;
4225        }
4226
4227        if (gravity != Gravity.BOTTOM) {
4228            int boxht;
4229
4230            if (l == mHintLayout) {
4231                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
4232                        getCompoundPaddingBottom();
4233            } else {
4234                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
4235                        getExtendedPaddingBottom();
4236            }
4237            int textht = l.getHeight();
4238
4239            if (textht < boxht) {
4240                if (gravity == Gravity.TOP)
4241                    voffset = boxht - textht;
4242                else // (gravity == Gravity.CENTER_VERTICAL)
4243                    voffset = (boxht - textht) >> 1;
4244            }
4245        }
4246        return voffset;
4247    }
4248
4249    void invalidateCursorPath() {
4250        if (mHighlightPathBogus) {
4251            invalidateCursor();
4252        } else {
4253            final int horizontalPadding = getCompoundPaddingLeft();
4254            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4255
4256            if (mEditor.mCursorCount == 0) {
4257                synchronized (TEMP_RECTF) {
4258                    /*
4259                     * The reason for this concern about the thickness of the
4260                     * cursor and doing the floor/ceil on the coordinates is that
4261                     * some EditTexts (notably textfields in the Browser) have
4262                     * anti-aliased text where not all the characters are
4263                     * necessarily at integer-multiple locations.  This should
4264                     * make sure the entire cursor gets invalidated instead of
4265                     * sometimes missing half a pixel.
4266                     */
4267                    float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
4268                    if (thick < 1.0f) {
4269                        thick = 1.0f;
4270                    }
4271
4272                    thick /= 2.0f;
4273
4274                    // mHighlightPath is guaranteed to be non null at that point.
4275                    mHighlightPath.computeBounds(TEMP_RECTF, false);
4276
4277                    invalidate((int) FloatMath.floor(horizontalPadding + TEMP_RECTF.left - thick),
4278                            (int) FloatMath.floor(verticalPadding + TEMP_RECTF.top - thick),
4279                            (int) FloatMath.ceil(horizontalPadding + TEMP_RECTF.right + thick),
4280                            (int) FloatMath.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
4281                }
4282            } else {
4283                for (int i = 0; i < mEditor.mCursorCount; i++) {
4284                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4285                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
4286                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
4287                }
4288            }
4289        }
4290    }
4291
4292    void invalidateCursor() {
4293        int where = getSelectionEnd();
4294
4295        invalidateCursor(where, where, where);
4296    }
4297
4298    private void invalidateCursor(int a, int b, int c) {
4299        if (a >= 0 || b >= 0 || c >= 0) {
4300            int start = Math.min(Math.min(a, b), c);
4301            int end = Math.max(Math.max(a, b), c);
4302            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
4303        }
4304    }
4305
4306    /**
4307     * Invalidates the region of text enclosed between the start and end text offsets.
4308     */
4309    void invalidateRegion(int start, int end, boolean invalidateCursor) {
4310        if (mLayout == null) {
4311            invalidate();
4312        } else {
4313                int lineStart = mLayout.getLineForOffset(start);
4314                int top = mLayout.getLineTop(lineStart);
4315
4316                // This is ridiculous, but the descent from the line above
4317                // can hang down into the line we really want to redraw,
4318                // so we have to invalidate part of the line above to make
4319                // sure everything that needs to be redrawn really is.
4320                // (But not the whole line above, because that would cause
4321                // the same problem with the descenders on the line above it!)
4322                if (lineStart > 0) {
4323                    top -= mLayout.getLineDescent(lineStart - 1);
4324                }
4325
4326                int lineEnd;
4327
4328                if (start == end)
4329                    lineEnd = lineStart;
4330                else
4331                    lineEnd = mLayout.getLineForOffset(end);
4332
4333                int bottom = mLayout.getLineBottom(lineEnd);
4334
4335                // mEditor can be null in case selection is set programmatically.
4336                if (invalidateCursor && mEditor != null) {
4337                    for (int i = 0; i < mEditor.mCursorCount; i++) {
4338                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4339                        top = Math.min(top, bounds.top);
4340                        bottom = Math.max(bottom, bounds.bottom);
4341                    }
4342                }
4343
4344                final int compoundPaddingLeft = getCompoundPaddingLeft();
4345                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4346
4347                int left, right;
4348                if (lineStart == lineEnd && !invalidateCursor) {
4349                    left = (int) mLayout.getPrimaryHorizontal(start);
4350                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
4351                    left += compoundPaddingLeft;
4352                    right += compoundPaddingLeft;
4353                } else {
4354                    // Rectangle bounding box when the region spans several lines
4355                    left = compoundPaddingLeft;
4356                    right = getWidth() - getCompoundPaddingRight();
4357                }
4358
4359                invalidate(mScrollX + left, verticalPadding + top,
4360                        mScrollX + right, verticalPadding + bottom);
4361        }
4362    }
4363
4364    private void registerForPreDraw() {
4365        if (!mPreDrawRegistered) {
4366            getViewTreeObserver().addOnPreDrawListener(this);
4367            mPreDrawRegistered = true;
4368        }
4369    }
4370
4371    /**
4372     * {@inheritDoc}
4373     */
4374    public boolean onPreDraw() {
4375        if (mLayout == null) {
4376            assumeLayout();
4377        }
4378
4379        boolean changed = false;
4380
4381        if (mMovement != null) {
4382            /* This code also provides auto-scrolling when a cursor is moved using a
4383             * CursorController (insertion point or selection limits).
4384             * For selection, ensure start or end is visible depending on controller's state.
4385             */
4386            int curs = getSelectionEnd();
4387            // Do not create the controller if it is not already created.
4388            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
4389                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
4390                curs = getSelectionStart();
4391            }
4392
4393            /*
4394             * TODO: This should really only keep the end in view if
4395             * it already was before the text changed.  I'm not sure
4396             * of a good way to tell from here if it was.
4397             */
4398            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
4399                curs = mText.length();
4400            }
4401
4402            if (curs >= 0) {
4403                changed = bringPointIntoView(curs);
4404            }
4405        } else {
4406            changed = bringTextIntoView();
4407        }
4408
4409        // This has to be checked here since:
4410        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
4411        //   a screen rotation) since layout is not yet initialized at that point.
4412        if (mEditor != null && mEditor.mCreatedWithASelection) {
4413            mEditor.startSelectionActionMode();
4414            mEditor.mCreatedWithASelection = false;
4415        }
4416
4417        // Phone specific code (there is no ExtractEditText on tablets).
4418        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
4419        // not be set. Do the test here instead.
4420        if (this instanceof ExtractEditText && hasSelection() && mEditor != null) {
4421            mEditor.startSelectionActionMode();
4422        }
4423
4424        getViewTreeObserver().removeOnPreDrawListener(this);
4425        mPreDrawRegistered = false;
4426
4427        return !changed;
4428    }
4429
4430    @Override
4431    protected void onAttachedToWindow() {
4432        super.onAttachedToWindow();
4433
4434        mTemporaryDetach = false;
4435
4436        // Resolve drawables as the layout direction has been resolved
4437        resolveDrawables();
4438
4439        if (mEditor != null) mEditor.onAttachedToWindow();
4440    }
4441
4442    @Override
4443    protected void onDetachedFromWindow() {
4444        super.onDetachedFromWindow();
4445
4446        if (mPreDrawRegistered) {
4447            getViewTreeObserver().removeOnPreDrawListener(this);
4448            mPreDrawRegistered = false;
4449        }
4450
4451        resetResolvedDrawables();
4452
4453        if (mEditor != null) mEditor.onDetachedFromWindow();
4454    }
4455
4456    @Override
4457    public void onScreenStateChanged(int screenState) {
4458        super.onScreenStateChanged(screenState);
4459        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
4460    }
4461
4462    @Override
4463    protected boolean isPaddingOffsetRequired() {
4464        return mShadowRadius != 0 || mDrawables != null;
4465    }
4466
4467    @Override
4468    protected int getLeftPaddingOffset() {
4469        return getCompoundPaddingLeft() - mPaddingLeft +
4470                (int) Math.min(0, mShadowDx - mShadowRadius);
4471    }
4472
4473    @Override
4474    protected int getTopPaddingOffset() {
4475        return (int) Math.min(0, mShadowDy - mShadowRadius);
4476    }
4477
4478    @Override
4479    protected int getBottomPaddingOffset() {
4480        return (int) Math.max(0, mShadowDy + mShadowRadius);
4481    }
4482
4483    @Override
4484    protected int getRightPaddingOffset() {
4485        return -(getCompoundPaddingRight() - mPaddingRight) +
4486                (int) Math.max(0, mShadowDx + mShadowRadius);
4487    }
4488
4489    @Override
4490    protected boolean verifyDrawable(Drawable who) {
4491        final boolean verified = super.verifyDrawable(who);
4492        if (!verified && mDrawables != null) {
4493            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
4494                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom ||
4495                    who == mDrawables.mDrawableStart || who == mDrawables.mDrawableEnd;
4496        }
4497        return verified;
4498    }
4499
4500    @Override
4501    public void jumpDrawablesToCurrentState() {
4502        super.jumpDrawablesToCurrentState();
4503        if (mDrawables != null) {
4504            if (mDrawables.mDrawableLeft != null) {
4505                mDrawables.mDrawableLeft.jumpToCurrentState();
4506            }
4507            if (mDrawables.mDrawableTop != null) {
4508                mDrawables.mDrawableTop.jumpToCurrentState();
4509            }
4510            if (mDrawables.mDrawableRight != null) {
4511                mDrawables.mDrawableRight.jumpToCurrentState();
4512            }
4513            if (mDrawables.mDrawableBottom != null) {
4514                mDrawables.mDrawableBottom.jumpToCurrentState();
4515            }
4516            if (mDrawables.mDrawableStart != null) {
4517                mDrawables.mDrawableStart.jumpToCurrentState();
4518            }
4519            if (mDrawables.mDrawableEnd != null) {
4520                mDrawables.mDrawableEnd.jumpToCurrentState();
4521            }
4522        }
4523    }
4524
4525    @Override
4526    public void invalidateDrawable(Drawable drawable) {
4527        if (verifyDrawable(drawable)) {
4528            final Rect dirty = drawable.getBounds();
4529            int scrollX = mScrollX;
4530            int scrollY = mScrollY;
4531
4532            // IMPORTANT: The coordinates below are based on the coordinates computed
4533            // for each compound drawable in onDraw(). Make sure to update each section
4534            // accordingly.
4535            final TextView.Drawables drawables = mDrawables;
4536            if (drawables != null) {
4537                if (drawable == drawables.mDrawableLeft) {
4538                    final int compoundPaddingTop = getCompoundPaddingTop();
4539                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4540                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4541
4542                    scrollX += mPaddingLeft;
4543                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
4544                } else if (drawable == drawables.mDrawableRight) {
4545                    final int compoundPaddingTop = getCompoundPaddingTop();
4546                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4547                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4548
4549                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
4550                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
4551                } else if (drawable == drawables.mDrawableTop) {
4552                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4553                    final int compoundPaddingRight = getCompoundPaddingRight();
4554                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4555
4556                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
4557                    scrollY += mPaddingTop;
4558                } else if (drawable == drawables.mDrawableBottom) {
4559                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4560                    final int compoundPaddingRight = getCompoundPaddingRight();
4561                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4562
4563                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
4564                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
4565                }
4566            }
4567
4568            invalidate(dirty.left + scrollX, dirty.top + scrollY,
4569                    dirty.right + scrollX, dirty.bottom + scrollY);
4570        }
4571    }
4572
4573    @Override
4574    public int getResolvedLayoutDirection(Drawable who) {
4575        if (who == null) return View.LAYOUT_DIRECTION_LTR;
4576        if (mDrawables != null) {
4577            final Drawables drawables = mDrawables;
4578            if (who == drawables.mDrawableLeft || who == drawables.mDrawableRight ||
4579                who == drawables.mDrawableTop || who == drawables.mDrawableBottom ||
4580                who == drawables.mDrawableStart || who == drawables.mDrawableEnd) {
4581                return getResolvedLayoutDirection();
4582            }
4583        }
4584        return super.getResolvedLayoutDirection(who);
4585    }
4586
4587    @Override
4588    public boolean hasOverlappingRendering() {
4589        return (getBackground() != null || mText instanceof Spannable || hasSelection());
4590    }
4591
4592    /**
4593     * When a TextView is used to display a useful piece of information to the user (such as a
4594     * contact's address), it should be made selectable, so that the user can select and copy this
4595     * content.
4596     *
4597     * Use {@link #setTextIsSelectable(boolean)} or the
4598     * {@link android.R.styleable#TextView_textIsSelectable} XML attribute to make this TextView
4599     * selectable (text is not selectable by default).
4600     *
4601     * Note that this method simply returns the state of this flag. Although this flag has to be set
4602     * in order to select text in non-editable TextView, the content of an {@link EditText} can
4603     * always be selected, independently of the value of this flag.
4604     *
4605     * @return True if the text displayed in this TextView can be selected by the user.
4606     *
4607     * @attr ref android.R.styleable#TextView_textIsSelectable
4608     */
4609    public boolean isTextSelectable() {
4610        return mEditor == null ? false : mEditor.mTextIsSelectable;
4611    }
4612
4613    /**
4614     * Sets whether or not (default) the content of this view is selectable by the user.
4615     *
4616     * Note that this methods affect the {@link #setFocusable(boolean)},
4617     * {@link #setFocusableInTouchMode(boolean)} {@link #setClickable(boolean)} and
4618     * {@link #setLongClickable(boolean)} states and you may want to restore these if they were
4619     * customized.
4620     *
4621     * See {@link #isTextSelectable} for details.
4622     *
4623     * @param selectable Whether or not the content of this TextView should be selectable.
4624     */
4625    public void setTextIsSelectable(boolean selectable) {
4626        if (!selectable && mEditor == null) return; // false is default value with no edit data
4627
4628        createEditorIfNeeded();
4629        if (mEditor.mTextIsSelectable == selectable) return;
4630
4631        mEditor.mTextIsSelectable = selectable;
4632        setFocusableInTouchMode(selectable);
4633        setFocusable(selectable);
4634        setClickable(selectable);
4635        setLongClickable(selectable);
4636
4637        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
4638
4639        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
4640        setText(getText(), selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
4641
4642        // Called by setText above, but safer in case of future code changes
4643        mEditor.prepareCursorControllers();
4644    }
4645
4646    @Override
4647    protected int[] onCreateDrawableState(int extraSpace) {
4648        final int[] drawableState;
4649
4650        if (mSingleLine) {
4651            drawableState = super.onCreateDrawableState(extraSpace);
4652        } else {
4653            drawableState = super.onCreateDrawableState(extraSpace + 1);
4654            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
4655        }
4656
4657        if (isTextSelectable()) {
4658            // Disable pressed state, which was introduced when TextView was made clickable.
4659            // Prevents text color change.
4660            // setClickable(false) would have a similar effect, but it also disables focus changes
4661            // and long press actions, which are both needed by text selection.
4662            final int length = drawableState.length;
4663            for (int i = 0; i < length; i++) {
4664                if (drawableState[i] == R.attr.state_pressed) {
4665                    final int[] nonPressedState = new int[length - 1];
4666                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
4667                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
4668                    return nonPressedState;
4669                }
4670            }
4671        }
4672
4673        return drawableState;
4674    }
4675
4676    private Path getUpdatedHighlightPath() {
4677        Path highlight = null;
4678        Paint highlightPaint = mHighlightPaint;
4679
4680        final int selStart = getSelectionStart();
4681        final int selEnd = getSelectionEnd();
4682        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
4683            if (selStart == selEnd) {
4684                if (mEditor != null && mEditor.isCursorVisible() &&
4685                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
4686                        (2 * Editor.BLINK) < Editor.BLINK) {
4687                    if (mHighlightPathBogus) {
4688                        if (mHighlightPath == null) mHighlightPath = new Path();
4689                        mHighlightPath.reset();
4690                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
4691                        mEditor.updateCursorsPositions();
4692                        mHighlightPathBogus = false;
4693                    }
4694
4695                    // XXX should pass to skin instead of drawing directly
4696                    highlightPaint.setColor(mCurTextColor);
4697                    highlightPaint.setStyle(Paint.Style.STROKE);
4698                    highlight = mHighlightPath;
4699                }
4700            } else {
4701                if (mHighlightPathBogus) {
4702                    if (mHighlightPath == null) mHighlightPath = new Path();
4703                    mHighlightPath.reset();
4704                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4705                    mHighlightPathBogus = false;
4706                }
4707
4708                // XXX should pass to skin instead of drawing directly
4709                highlightPaint.setColor(mHighlightColor);
4710                highlightPaint.setStyle(Paint.Style.FILL);
4711
4712                highlight = mHighlightPath;
4713            }
4714        }
4715        return highlight;
4716    }
4717
4718    @Override
4719    protected void onDraw(Canvas canvas) {
4720        restartMarqueeIfNeeded();
4721
4722        // Draw the background for this view
4723        super.onDraw(canvas);
4724
4725        final int compoundPaddingLeft = getCompoundPaddingLeft();
4726        final int compoundPaddingTop = getCompoundPaddingTop();
4727        final int compoundPaddingRight = getCompoundPaddingRight();
4728        final int compoundPaddingBottom = getCompoundPaddingBottom();
4729        final int scrollX = mScrollX;
4730        final int scrollY = mScrollY;
4731        final int right = mRight;
4732        final int left = mLeft;
4733        final int bottom = mBottom;
4734        final int top = mTop;
4735
4736        final Drawables dr = mDrawables;
4737        if (dr != null) {
4738            /*
4739             * Compound, not extended, because the icon is not clipped
4740             * if the text height is smaller.
4741             */
4742
4743            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
4744            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
4745
4746            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4747            // Make sure to update invalidateDrawable() when changing this code.
4748            if (dr.mDrawableLeft != null) {
4749                canvas.save();
4750                canvas.translate(scrollX + mPaddingLeft,
4751                                 scrollY + compoundPaddingTop +
4752                                 (vspace - dr.mDrawableHeightLeft) / 2);
4753                dr.mDrawableLeft.draw(canvas);
4754                canvas.restore();
4755            }
4756
4757            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4758            // Make sure to update invalidateDrawable() when changing this code.
4759            if (dr.mDrawableRight != null) {
4760                canvas.save();
4761                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
4762                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
4763                dr.mDrawableRight.draw(canvas);
4764                canvas.restore();
4765            }
4766
4767            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4768            // Make sure to update invalidateDrawable() when changing this code.
4769            if (dr.mDrawableTop != null) {
4770                canvas.save();
4771                canvas.translate(scrollX + compoundPaddingLeft +
4772                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
4773                dr.mDrawableTop.draw(canvas);
4774                canvas.restore();
4775            }
4776
4777            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4778            // Make sure to update invalidateDrawable() when changing this code.
4779            if (dr.mDrawableBottom != null) {
4780                canvas.save();
4781                canvas.translate(scrollX + compoundPaddingLeft +
4782                        (hspace - dr.mDrawableWidthBottom) / 2,
4783                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
4784                dr.mDrawableBottom.draw(canvas);
4785                canvas.restore();
4786            }
4787        }
4788
4789        int color = mCurTextColor;
4790
4791        if (mLayout == null) {
4792            assumeLayout();
4793        }
4794
4795        Layout layout = mLayout;
4796
4797        if (mHint != null && mText.length() == 0) {
4798            if (mHintTextColor != null) {
4799                color = mCurHintTextColor;
4800            }
4801
4802            layout = mHintLayout;
4803        }
4804
4805        mTextPaint.setColor(color);
4806        mTextPaint.drawableState = getDrawableState();
4807
4808        canvas.save();
4809        /*  Would be faster if we didn't have to do this. Can we chop the
4810            (displayable) text so that we don't need to do this ever?
4811        */
4812
4813        int extendedPaddingTop = getExtendedPaddingTop();
4814        int extendedPaddingBottom = getExtendedPaddingBottom();
4815
4816        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4817        final int maxScrollY = mLayout.getHeight() - vspace;
4818
4819        float clipLeft = compoundPaddingLeft + scrollX;
4820        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
4821        float clipRight = right - left - compoundPaddingRight + scrollX;
4822        float clipBottom = bottom - top + scrollY -
4823                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
4824
4825        if (mShadowRadius != 0) {
4826            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
4827            clipRight += Math.max(0, mShadowDx + mShadowRadius);
4828
4829            clipTop += Math.min(0, mShadowDy - mShadowRadius);
4830            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
4831        }
4832
4833        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
4834
4835        int voffsetText = 0;
4836        int voffsetCursor = 0;
4837
4838        // translate in by our padding
4839        /* shortcircuit calling getVerticaOffset() */
4840        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4841            voffsetText = getVerticalOffset(false);
4842            voffsetCursor = getVerticalOffset(true);
4843        }
4844        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
4845
4846        final int layoutDirection = getResolvedLayoutDirection();
4847        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
4848        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
4849                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
4850            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
4851                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
4852                canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft -
4853                        getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f);
4854            }
4855
4856            if (mMarquee != null && mMarquee.isRunning()) {
4857                canvas.translate(-mMarquee.mScroll, 0.0f);
4858            }
4859        }
4860
4861        final int cursorOffsetVertical = voffsetCursor - voffsetText;
4862
4863        Path highlight = getUpdatedHighlightPath();
4864        if (mEditor != null) {
4865            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
4866        } else {
4867            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4868        }
4869
4870        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
4871            canvas.translate((int) mMarquee.getGhostOffset(), 0.0f);
4872            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4873        }
4874
4875        canvas.restore();
4876    }
4877
4878    @Override
4879    public void getFocusedRect(Rect r) {
4880        if (mLayout == null) {
4881            super.getFocusedRect(r);
4882            return;
4883        }
4884
4885        int selEnd = getSelectionEnd();
4886        if (selEnd < 0) {
4887            super.getFocusedRect(r);
4888            return;
4889        }
4890
4891        int selStart = getSelectionStart();
4892        if (selStart < 0 || selStart >= selEnd) {
4893            int line = mLayout.getLineForOffset(selEnd);
4894            r.top = mLayout.getLineTop(line);
4895            r.bottom = mLayout.getLineBottom(line);
4896            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
4897            r.right = r.left + 4;
4898        } else {
4899            int lineStart = mLayout.getLineForOffset(selStart);
4900            int lineEnd = mLayout.getLineForOffset(selEnd);
4901            r.top = mLayout.getLineTop(lineStart);
4902            r.bottom = mLayout.getLineBottom(lineEnd);
4903            if (lineStart == lineEnd) {
4904                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
4905                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
4906            } else {
4907                // Selection extends across multiple lines -- make the focused
4908                // rect cover the entire width.
4909                if (mHighlightPathBogus) {
4910                    if (mHighlightPath == null) mHighlightPath = new Path();
4911                    mHighlightPath.reset();
4912                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4913                    mHighlightPathBogus = false;
4914                }
4915                synchronized (TEMP_RECTF) {
4916                    mHighlightPath.computeBounds(TEMP_RECTF, true);
4917                    r.left = (int)TEMP_RECTF.left-1;
4918                    r.right = (int)TEMP_RECTF.right+1;
4919                }
4920            }
4921        }
4922
4923        // Adjust for padding and gravity.
4924        int paddingLeft = getCompoundPaddingLeft();
4925        int paddingTop = getExtendedPaddingTop();
4926        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4927            paddingTop += getVerticalOffset(false);
4928        }
4929        r.offset(paddingLeft, paddingTop);
4930        int paddingBottom = getExtendedPaddingBottom();
4931        r.bottom += paddingBottom;
4932    }
4933
4934    /**
4935     * Return the number of lines of text, or 0 if the internal Layout has not
4936     * been built.
4937     */
4938    public int getLineCount() {
4939        return mLayout != null ? mLayout.getLineCount() : 0;
4940    }
4941
4942    /**
4943     * Return the baseline for the specified line (0...getLineCount() - 1)
4944     * If bounds is not null, return the top, left, right, bottom extents
4945     * of the specified line in it. If the internal Layout has not been built,
4946     * return 0 and set bounds to (0, 0, 0, 0)
4947     * @param line which line to examine (0..getLineCount() - 1)
4948     * @param bounds Optional. If not null, it returns the extent of the line
4949     * @return the Y-coordinate of the baseline
4950     */
4951    public int getLineBounds(int line, Rect bounds) {
4952        if (mLayout == null) {
4953            if (bounds != null) {
4954                bounds.set(0, 0, 0, 0);
4955            }
4956            return 0;
4957        }
4958        else {
4959            int baseline = mLayout.getLineBounds(line, bounds);
4960
4961            int voffset = getExtendedPaddingTop();
4962            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4963                voffset += getVerticalOffset(true);
4964            }
4965            if (bounds != null) {
4966                bounds.offset(getCompoundPaddingLeft(), voffset);
4967            }
4968            return baseline + voffset;
4969        }
4970    }
4971
4972    @Override
4973    public int getBaseline() {
4974        if (mLayout == null) {
4975            return super.getBaseline();
4976        }
4977
4978        int voffset = 0;
4979        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4980            voffset = getVerticalOffset(true);
4981        }
4982
4983        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
4984    }
4985
4986    /**
4987     * @hide
4988     */
4989    @Override
4990    protected int getFadeTop(boolean offsetRequired) {
4991        if (mLayout == null) return 0;
4992
4993        int voffset = 0;
4994        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4995            voffset = getVerticalOffset(true);
4996        }
4997
4998        if (offsetRequired) voffset += getTopPaddingOffset();
4999
5000        return getExtendedPaddingTop() + voffset;
5001    }
5002
5003    /**
5004     * @hide
5005     */
5006    @Override
5007    protected int getFadeHeight(boolean offsetRequired) {
5008        return mLayout != null ? mLayout.getHeight() : 0;
5009    }
5010
5011    @Override
5012    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
5013        if (keyCode == KeyEvent.KEYCODE_BACK) {
5014            boolean isInSelectionMode = mEditor != null && mEditor.mSelectionActionMode != null;
5015
5016            if (isInSelectionMode) {
5017                if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
5018                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5019                    if (state != null) {
5020                        state.startTracking(event, this);
5021                    }
5022                    return true;
5023                } else if (event.getAction() == KeyEvent.ACTION_UP) {
5024                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5025                    if (state != null) {
5026                        state.handleUpEvent(event);
5027                    }
5028                    if (event.isTracking() && !event.isCanceled()) {
5029                        stopSelectionActionMode();
5030                        return true;
5031                    }
5032                }
5033            }
5034        }
5035        return super.onKeyPreIme(keyCode, event);
5036    }
5037
5038    @Override
5039    public boolean onKeyDown(int keyCode, KeyEvent event) {
5040        int which = doKeyDown(keyCode, event, null);
5041        if (which == 0) {
5042            // Go through default dispatching.
5043            return super.onKeyDown(keyCode, event);
5044        }
5045
5046        return true;
5047    }
5048
5049    @Override
5050    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
5051        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
5052
5053        int which = doKeyDown(keyCode, down, event);
5054        if (which == 0) {
5055            // Go through default dispatching.
5056            return super.onKeyMultiple(keyCode, repeatCount, event);
5057        }
5058        if (which == -1) {
5059            // Consumed the whole thing.
5060            return true;
5061        }
5062
5063        repeatCount--;
5064
5065        // We are going to dispatch the remaining events to either the input
5066        // or movement method.  To do this, we will just send a repeated stream
5067        // of down and up events until we have done the complete repeatCount.
5068        // It would be nice if those interfaces had an onKeyMultiple() method,
5069        // but adding that is a more complicated change.
5070        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
5071        if (which == 1) {
5072            // mEditor and mEditor.mInput are not null from doKeyDown
5073            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5074            while (--repeatCount > 0) {
5075                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
5076                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5077            }
5078            hideErrorIfUnchanged();
5079
5080        } else if (which == 2) {
5081            // mMovement is not null from doKeyDown
5082            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5083            while (--repeatCount > 0) {
5084                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
5085                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5086            }
5087        }
5088
5089        return true;
5090    }
5091
5092    /**
5093     * Returns true if pressing ENTER in this field advances focus instead
5094     * of inserting the character.  This is true mostly in single-line fields,
5095     * but also in mail addresses and subjects which will display on multiple
5096     * lines but where it doesn't make sense to insert newlines.
5097     */
5098    private boolean shouldAdvanceFocusOnEnter() {
5099        if (getKeyListener() == null) {
5100            return false;
5101        }
5102
5103        if (mSingleLine) {
5104            return true;
5105        }
5106
5107        if (mEditor != null &&
5108                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5109            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5110            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
5111                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
5112                return true;
5113            }
5114        }
5115
5116        return false;
5117    }
5118
5119    /**
5120     * Returns true if pressing TAB in this field advances focus instead
5121     * of inserting the character.  Insert tabs only in multi-line editors.
5122     */
5123    private boolean shouldAdvanceFocusOnTab() {
5124        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
5125                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5126            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5127            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
5128                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
5129                return false;
5130            }
5131        }
5132        return true;
5133    }
5134
5135    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
5136        if (!isEnabled()) {
5137            return 0;
5138        }
5139
5140        switch (keyCode) {
5141            case KeyEvent.KEYCODE_ENTER:
5142                if (event.hasNoModifiers()) {
5143                    // When mInputContentType is set, we know that we are
5144                    // running in a "modern" cupcake environment, so don't need
5145                    // to worry about the application trying to capture
5146                    // enter key events.
5147                    if (mEditor != null && mEditor.mInputContentType != null) {
5148                        // If there is an action listener, given them a
5149                        // chance to consume the event.
5150                        if (mEditor.mInputContentType.onEditorActionListener != null &&
5151                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5152                                this, EditorInfo.IME_NULL, event)) {
5153                            mEditor.mInputContentType.enterDown = true;
5154                            // We are consuming the enter key for them.
5155                            return -1;
5156                        }
5157                    }
5158
5159                    // If our editor should move focus when enter is pressed, or
5160                    // this is a generated event from an IME action button, then
5161                    // don't let it be inserted into the text.
5162                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5163                            || shouldAdvanceFocusOnEnter()) {
5164                        if (hasOnClickListeners()) {
5165                            return 0;
5166                        }
5167                        return -1;
5168                    }
5169                }
5170                break;
5171
5172            case KeyEvent.KEYCODE_DPAD_CENTER:
5173                if (event.hasNoModifiers()) {
5174                    if (shouldAdvanceFocusOnEnter()) {
5175                        return 0;
5176                    }
5177                }
5178                break;
5179
5180            case KeyEvent.KEYCODE_TAB:
5181                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
5182                    if (shouldAdvanceFocusOnTab()) {
5183                        return 0;
5184                    }
5185                }
5186                break;
5187
5188                // Has to be done on key down (and not on key up) to correctly be intercepted.
5189            case KeyEvent.KEYCODE_BACK:
5190                if (mEditor != null && mEditor.mSelectionActionMode != null) {
5191                    stopSelectionActionMode();
5192                    return -1;
5193                }
5194                break;
5195        }
5196
5197        if (mEditor != null && mEditor.mKeyListener != null) {
5198            resetErrorChangedFlag();
5199
5200            boolean doDown = true;
5201            if (otherEvent != null) {
5202                try {
5203                    beginBatchEdit();
5204                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
5205                            otherEvent);
5206                    hideErrorIfUnchanged();
5207                    doDown = false;
5208                    if (handled) {
5209                        return -1;
5210                    }
5211                } catch (AbstractMethodError e) {
5212                    // onKeyOther was added after 1.0, so if it isn't
5213                    // implemented we need to try to dispatch as a regular down.
5214                } finally {
5215                    endBatchEdit();
5216                }
5217            }
5218
5219            if (doDown) {
5220                beginBatchEdit();
5221                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
5222                        keyCode, event);
5223                endBatchEdit();
5224                hideErrorIfUnchanged();
5225                if (handled) return 1;
5226            }
5227        }
5228
5229        // bug 650865: sometimes we get a key event before a layout.
5230        // don't try to move around if we don't know the layout.
5231
5232        if (mMovement != null && mLayout != null) {
5233            boolean doDown = true;
5234            if (otherEvent != null) {
5235                try {
5236                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
5237                            otherEvent);
5238                    doDown = false;
5239                    if (handled) {
5240                        return -1;
5241                    }
5242                } catch (AbstractMethodError e) {
5243                    // onKeyOther was added after 1.0, so if it isn't
5244                    // implemented we need to try to dispatch as a regular down.
5245                }
5246            }
5247            if (doDown) {
5248                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
5249                    return 2;
5250            }
5251        }
5252
5253        return 0;
5254    }
5255
5256    /**
5257     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
5258     * can be recorded.
5259     * @hide
5260     */
5261    public void resetErrorChangedFlag() {
5262        /*
5263         * Keep track of what the error was before doing the input
5264         * so that if an input filter changed the error, we leave
5265         * that error showing.  Otherwise, we take down whatever
5266         * error was showing when the user types something.
5267         */
5268        if (mEditor != null) mEditor.mErrorWasChanged = false;
5269    }
5270
5271    /**
5272     * @hide
5273     */
5274    public void hideErrorIfUnchanged() {
5275        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
5276            setError(null, null);
5277        }
5278    }
5279
5280    @Override
5281    public boolean onKeyUp(int keyCode, KeyEvent event) {
5282        if (!isEnabled()) {
5283            return super.onKeyUp(keyCode, event);
5284        }
5285
5286        switch (keyCode) {
5287            case KeyEvent.KEYCODE_DPAD_CENTER:
5288                if (event.hasNoModifiers()) {
5289                    /*
5290                     * If there is a click listener, just call through to
5291                     * super, which will invoke it.
5292                     *
5293                     * If there isn't a click listener, try to show the soft
5294                     * input method.  (It will also
5295                     * call performClick(), but that won't do anything in
5296                     * this case.)
5297                     */
5298                    if (!hasOnClickListeners()) {
5299                        if (mMovement != null && mText instanceof Editable
5300                                && mLayout != null && onCheckIsTextEditor()) {
5301                            InputMethodManager imm = InputMethodManager.peekInstance();
5302                            viewClicked(imm);
5303                            if (imm != null && getShowSoftInputOnFocus()) {
5304                                imm.showSoftInput(this, 0);
5305                            }
5306                        }
5307                    }
5308                }
5309                return super.onKeyUp(keyCode, event);
5310
5311            case KeyEvent.KEYCODE_ENTER:
5312                if (event.hasNoModifiers()) {
5313                    if (mEditor != null && mEditor.mInputContentType != null
5314                            && mEditor.mInputContentType.onEditorActionListener != null
5315                            && mEditor.mInputContentType.enterDown) {
5316                        mEditor.mInputContentType.enterDown = false;
5317                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5318                                this, EditorInfo.IME_NULL, event)) {
5319                            return true;
5320                        }
5321                    }
5322
5323                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5324                            || shouldAdvanceFocusOnEnter()) {
5325                        /*
5326                         * If there is a click listener, just call through to
5327                         * super, which will invoke it.
5328                         *
5329                         * If there isn't a click listener, try to advance focus,
5330                         * but still call through to super, which will reset the
5331                         * pressed state and longpress state.  (It will also
5332                         * call performClick(), but that won't do anything in
5333                         * this case.)
5334                         */
5335                        if (!hasOnClickListeners()) {
5336                            View v = focusSearch(FOCUS_DOWN);
5337
5338                            if (v != null) {
5339                                if (!v.requestFocus(FOCUS_DOWN)) {
5340                                    throw new IllegalStateException(
5341                                            "focus search returned a view " +
5342                                            "that wasn't able to take focus!");
5343                                }
5344
5345                                /*
5346                                 * Return true because we handled the key; super
5347                                 * will return false because there was no click
5348                                 * listener.
5349                                 */
5350                                super.onKeyUp(keyCode, event);
5351                                return true;
5352                            } else if ((event.getFlags()
5353                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
5354                                // No target for next focus, but make sure the IME
5355                                // if this came from it.
5356                                InputMethodManager imm = InputMethodManager.peekInstance();
5357                                if (imm != null && imm.isActive(this)) {
5358                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
5359                                }
5360                            }
5361                        }
5362                    }
5363                    return super.onKeyUp(keyCode, event);
5364                }
5365                break;
5366        }
5367
5368        if (mEditor != null && mEditor.mKeyListener != null)
5369            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
5370                return true;
5371
5372        if (mMovement != null && mLayout != null)
5373            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
5374                return true;
5375
5376        return super.onKeyUp(keyCode, event);
5377    }
5378
5379    @Override
5380    public boolean onCheckIsTextEditor() {
5381        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
5382    }
5383
5384    @Override
5385    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
5386        if (onCheckIsTextEditor() && isEnabled()) {
5387            mEditor.createInputMethodStateIfNeeded();
5388            outAttrs.inputType = getInputType();
5389            if (mEditor.mInputContentType != null) {
5390                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
5391                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
5392                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
5393                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
5394                outAttrs.extras = mEditor.mInputContentType.extras;
5395            } else {
5396                outAttrs.imeOptions = EditorInfo.IME_NULL;
5397            }
5398            if (focusSearch(FOCUS_DOWN) != null) {
5399                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
5400            }
5401            if (focusSearch(FOCUS_UP) != null) {
5402                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
5403            }
5404            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
5405                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
5406                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
5407                    // An action has not been set, but the enter key will move to
5408                    // the next focus, so set the action to that.
5409                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
5410                } else {
5411                    // An action has not been set, and there is no focus to move
5412                    // to, so let's just supply a "done" action.
5413                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
5414                }
5415                if (!shouldAdvanceFocusOnEnter()) {
5416                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5417                }
5418            }
5419            if (isMultilineInputType(outAttrs.inputType)) {
5420                // Multi-line text editors should always show an enter key.
5421                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5422            }
5423            outAttrs.hintText = mHint;
5424            if (mText instanceof Editable) {
5425                InputConnection ic = new EditableInputConnection(this);
5426                outAttrs.initialSelStart = getSelectionStart();
5427                outAttrs.initialSelEnd = getSelectionEnd();
5428                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
5429                return ic;
5430            }
5431        }
5432        return null;
5433    }
5434
5435    /**
5436     * If this TextView contains editable content, extract a portion of it
5437     * based on the information in <var>request</var> in to <var>outText</var>.
5438     * @return Returns true if the text was successfully extracted, else false.
5439     */
5440    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
5441        createEditorIfNeeded();
5442        return mEditor.extractText(request, outText);
5443    }
5444
5445    /**
5446     * This is used to remove all style-impacting spans from text before new
5447     * extracted text is being replaced into it, so that we don't have any
5448     * lingering spans applied during the replace.
5449     */
5450    static void removeParcelableSpans(Spannable spannable, int start, int end) {
5451        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
5452        int i = spans.length;
5453        while (i > 0) {
5454            i--;
5455            spannable.removeSpan(spans[i]);
5456        }
5457    }
5458
5459    /**
5460     * Apply to this text view the given extracted text, as previously
5461     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
5462     */
5463    public void setExtractedText(ExtractedText text) {
5464        Editable content = getEditableText();
5465        if (text.text != null) {
5466            if (content == null) {
5467                setText(text.text, TextView.BufferType.EDITABLE);
5468            } else if (text.partialStartOffset < 0) {
5469                removeParcelableSpans(content, 0, content.length());
5470                content.replace(0, content.length(), text.text);
5471            } else {
5472                final int N = content.length();
5473                int start = text.partialStartOffset;
5474                if (start > N) start = N;
5475                int end = text.partialEndOffset;
5476                if (end > N) end = N;
5477                removeParcelableSpans(content, start, end);
5478                content.replace(start, end, text.text);
5479            }
5480        }
5481
5482        // Now set the selection position...  make sure it is in range, to
5483        // avoid crashes.  If this is a partial update, it is possible that
5484        // the underlying text may have changed, causing us problems here.
5485        // Also we just don't want to trust clients to do the right thing.
5486        Spannable sp = (Spannable)getText();
5487        final int N = sp.length();
5488        int start = text.selectionStart;
5489        if (start < 0) start = 0;
5490        else if (start > N) start = N;
5491        int end = text.selectionEnd;
5492        if (end < 0) end = 0;
5493        else if (end > N) end = N;
5494        Selection.setSelection(sp, start, end);
5495
5496        // Finally, update the selection mode.
5497        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
5498            MetaKeyKeyListener.startSelecting(this, sp);
5499        } else {
5500            MetaKeyKeyListener.stopSelecting(this, sp);
5501        }
5502    }
5503
5504    /**
5505     * @hide
5506     */
5507    public void setExtracting(ExtractedTextRequest req) {
5508        if (mEditor.mInputMethodState != null) {
5509            mEditor.mInputMethodState.mExtractedTextRequest = req;
5510        }
5511        // This would stop a possible selection mode, but no such mode is started in case
5512        // extracted mode will start. Some text is selected though, and will trigger an action mode
5513        // in the extracted view.
5514        mEditor.hideControllers();
5515    }
5516
5517    /**
5518     * Called by the framework in response to a text completion from
5519     * the current input method, provided by it calling
5520     * {@link InputConnection#commitCompletion
5521     * InputConnection.commitCompletion()}.  The default implementation does
5522     * nothing; text views that are supporting auto-completion should override
5523     * this to do their desired behavior.
5524     *
5525     * @param text The auto complete text the user has selected.
5526     */
5527    public void onCommitCompletion(CompletionInfo text) {
5528        // intentionally empty
5529    }
5530
5531    /**
5532     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
5533     * a dictionnary) from the current input method, provided by it calling
5534     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
5535     * implementation flashes the background of the corrected word to provide feedback to the user.
5536     *
5537     * @param info The auto correct info about the text that was corrected.
5538     */
5539    public void onCommitCorrection(CorrectionInfo info) {
5540        if (mEditor != null) mEditor.onCommitCorrection(info);
5541    }
5542
5543    public void beginBatchEdit() {
5544        if (mEditor != null) mEditor.beginBatchEdit();
5545    }
5546
5547    public void endBatchEdit() {
5548        if (mEditor != null) mEditor.endBatchEdit();
5549    }
5550
5551    /**
5552     * Called by the framework in response to a request to begin a batch
5553     * of edit operations through a call to link {@link #beginBatchEdit()}.
5554     */
5555    public void onBeginBatchEdit() {
5556        // intentionally empty
5557    }
5558
5559    /**
5560     * Called by the framework in response to a request to end a batch
5561     * of edit operations through a call to link {@link #endBatchEdit}.
5562     */
5563    public void onEndBatchEdit() {
5564        // intentionally empty
5565    }
5566
5567    /**
5568     * Called by the framework in response to a private command from the
5569     * current method, provided by it calling
5570     * {@link InputConnection#performPrivateCommand
5571     * InputConnection.performPrivateCommand()}.
5572     *
5573     * @param action The action name of the command.
5574     * @param data Any additional data for the command.  This may be null.
5575     * @return Return true if you handled the command, else false.
5576     */
5577    public boolean onPrivateIMECommand(String action, Bundle data) {
5578        return false;
5579    }
5580
5581    private void nullLayouts() {
5582        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
5583            mSavedLayout = (BoringLayout) mLayout;
5584        }
5585        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
5586            mSavedHintLayout = (BoringLayout) mHintLayout;
5587        }
5588
5589        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
5590
5591        mBoring = mHintBoring = null;
5592
5593        // Since it depends on the value of mLayout
5594        if (mEditor != null) mEditor.prepareCursorControllers();
5595    }
5596
5597    /**
5598     * Make a new Layout based on the already-measured size of the view,
5599     * on the assumption that it was measured correctly at some point.
5600     */
5601    private void assumeLayout() {
5602        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5603
5604        if (width < 1) {
5605            width = 0;
5606        }
5607
5608        int physicalWidth = width;
5609
5610        if (mHorizontallyScrolling) {
5611            width = VERY_WIDE;
5612        }
5613
5614        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
5615                      physicalWidth, false);
5616    }
5617
5618    @Override
5619    public void onResolvedLayoutDirectionReset() {
5620        if (mLayoutAlignment != null) {
5621            int resolvedTextAlignment = getResolvedTextAlignment();
5622            if (resolvedTextAlignment == TEXT_ALIGNMENT_VIEW_START ||
5623                 resolvedTextAlignment == TEXT_ALIGNMENT_VIEW_END) {
5624                mLayoutAlignment = null;
5625            }
5626        }
5627    }
5628
5629    private Layout.Alignment getLayoutAlignment() {
5630        if (mLayoutAlignment == null) {
5631            int textAlign = getResolvedTextAlignment();
5632            switch (textAlign) {
5633                case TEXT_ALIGNMENT_GRAVITY:
5634                    switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
5635                        case Gravity.START:
5636                            mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5637                            break;
5638                        case Gravity.END:
5639                            mLayoutAlignment = Layout.Alignment.ALIGN_OPPOSITE;
5640                            break;
5641                        case Gravity.LEFT:
5642                            mLayoutAlignment = Layout.Alignment.ALIGN_LEFT;
5643                            break;
5644                        case Gravity.RIGHT:
5645                            mLayoutAlignment = Layout.Alignment.ALIGN_RIGHT;
5646                            break;
5647                        case Gravity.CENTER_HORIZONTAL:
5648                            mLayoutAlignment = Layout.Alignment.ALIGN_CENTER;
5649                            break;
5650                        default:
5651                            mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5652                            break;
5653                    }
5654                    break;
5655                case TEXT_ALIGNMENT_TEXT_START:
5656                    mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5657                    break;
5658                case TEXT_ALIGNMENT_TEXT_END:
5659                    mLayoutAlignment = Layout.Alignment.ALIGN_OPPOSITE;
5660                    break;
5661                case TEXT_ALIGNMENT_CENTER:
5662                    mLayoutAlignment = Layout.Alignment.ALIGN_CENTER;
5663                    break;
5664                case TEXT_ALIGNMENT_VIEW_START:
5665                    mLayoutAlignment = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
5666                            Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
5667                    break;
5668                case TEXT_ALIGNMENT_VIEW_END:
5669                    mLayoutAlignment = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
5670                            Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
5671                    break;
5672                case TEXT_ALIGNMENT_INHERIT:
5673                    // This should never happen as we have already resolved the text alignment
5674                    // but better safe than sorry so we just fall through
5675                default:
5676                    mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5677                    break;
5678            }
5679        }
5680        return mLayoutAlignment;
5681    }
5682
5683    /**
5684     * The width passed in is now the desired layout width,
5685     * not the full view width with padding.
5686     * {@hide}
5687     */
5688    protected void makeNewLayout(int wantWidth, int hintWidth,
5689                                 BoringLayout.Metrics boring,
5690                                 BoringLayout.Metrics hintBoring,
5691                                 int ellipsisWidth, boolean bringIntoView) {
5692        stopMarquee();
5693
5694        // Update "old" cached values
5695        mOldMaximum = mMaximum;
5696        mOldMaxMode = mMaxMode;
5697
5698        mHighlightPathBogus = true;
5699
5700        if (wantWidth < 0) {
5701            wantWidth = 0;
5702        }
5703        if (hintWidth < 0) {
5704            hintWidth = 0;
5705        }
5706
5707        Layout.Alignment alignment = getLayoutAlignment();
5708        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
5709        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
5710                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
5711        TruncateAt effectiveEllipsize = mEllipsize;
5712        if (mEllipsize == TruncateAt.MARQUEE &&
5713                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5714            effectiveEllipsize = TruncateAt.END_SMALL;
5715        }
5716
5717        if (mTextDir == null) {
5718            resolveTextDirection();
5719        }
5720
5721        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
5722                effectiveEllipsize, effectiveEllipsize == mEllipsize);
5723        if (switchEllipsize) {
5724            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
5725                    TruncateAt.END : TruncateAt.MARQUEE;
5726            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
5727                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
5728        }
5729
5730        shouldEllipsize = mEllipsize != null;
5731        mHintLayout = null;
5732
5733        if (mHint != null) {
5734            if (shouldEllipsize) hintWidth = wantWidth;
5735
5736            if (hintBoring == UNKNOWN_BORING) {
5737                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
5738                                                   mHintBoring);
5739                if (hintBoring != null) {
5740                    mHintBoring = hintBoring;
5741                }
5742            }
5743
5744            if (hintBoring != null) {
5745                if (hintBoring.width <= hintWidth &&
5746                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
5747                    if (mSavedHintLayout != null) {
5748                        mHintLayout = mSavedHintLayout.
5749                                replaceOrMake(mHint, mTextPaint,
5750                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5751                                hintBoring, mIncludePad);
5752                    } else {
5753                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5754                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5755                                hintBoring, mIncludePad);
5756                    }
5757
5758                    mSavedHintLayout = (BoringLayout) mHintLayout;
5759                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
5760                    if (mSavedHintLayout != null) {
5761                        mHintLayout = mSavedHintLayout.
5762                                replaceOrMake(mHint, mTextPaint,
5763                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5764                                hintBoring, mIncludePad, mEllipsize,
5765                                ellipsisWidth);
5766                    } else {
5767                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5768                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5769                                hintBoring, mIncludePad, mEllipsize,
5770                                ellipsisWidth);
5771                    }
5772                } else if (shouldEllipsize) {
5773                    mHintLayout = new StaticLayout(mHint,
5774                                0, mHint.length(),
5775                                mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5776                                mSpacingAdd, mIncludePad, mEllipsize,
5777                                ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5778                } else {
5779                    mHintLayout = new StaticLayout(mHint, mTextPaint,
5780                            hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5781                            mIncludePad);
5782                }
5783            } else if (shouldEllipsize) {
5784                mHintLayout = new StaticLayout(mHint,
5785                            0, mHint.length(),
5786                            mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5787                            mSpacingAdd, mIncludePad, mEllipsize,
5788                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5789            } else {
5790                mHintLayout = new StaticLayout(mHint, mTextPaint,
5791                        hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5792                        mIncludePad);
5793            }
5794        }
5795
5796        if (bringIntoView) {
5797            registerForPreDraw();
5798        }
5799
5800        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5801            if (!compressText(ellipsisWidth)) {
5802                final int height = mLayoutParams.height;
5803                // If the size of the view does not depend on the size of the text, try to
5804                // start the marquee immediately
5805                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
5806                    startMarquee();
5807                } else {
5808                    // Defer the start of the marquee until we know our width (see setFrame())
5809                    mRestartMarquee = true;
5810                }
5811            }
5812        }
5813
5814        // CursorControllers need a non-null mLayout
5815        if (mEditor != null) mEditor.prepareCursorControllers();
5816    }
5817
5818    private Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
5819            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
5820            boolean useSaved) {
5821        Layout result = null;
5822        if (mText instanceof Spannable) {
5823            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
5824                    alignment, mTextDir, mSpacingMult,
5825                    mSpacingAdd, mIncludePad, getKeyListener() == null ? effectiveEllipsize : null,
5826                            ellipsisWidth);
5827        } else {
5828            if (boring == UNKNOWN_BORING) {
5829                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
5830                if (boring != null) {
5831                    mBoring = boring;
5832                }
5833            }
5834
5835            if (boring != null) {
5836                if (boring.width <= wantWidth &&
5837                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
5838                    if (useSaved && mSavedLayout != null) {
5839                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
5840                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5841                                boring, mIncludePad);
5842                    } else {
5843                        result = BoringLayout.make(mTransformed, mTextPaint,
5844                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5845                                boring, mIncludePad);
5846                    }
5847
5848                    if (useSaved) {
5849                        mSavedLayout = (BoringLayout) result;
5850                    }
5851                } else if (shouldEllipsize && boring.width <= wantWidth) {
5852                    if (useSaved && mSavedLayout != null) {
5853                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
5854                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5855                                boring, mIncludePad, effectiveEllipsize,
5856                                ellipsisWidth);
5857                    } else {
5858                        result = BoringLayout.make(mTransformed, mTextPaint,
5859                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5860                                boring, mIncludePad, effectiveEllipsize,
5861                                ellipsisWidth);
5862                    }
5863                } else if (shouldEllipsize) {
5864                    result = new StaticLayout(mTransformed,
5865                            0, mTransformed.length(),
5866                            mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
5867                            mSpacingAdd, mIncludePad, effectiveEllipsize,
5868                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5869                } else {
5870                    result = new StaticLayout(mTransformed, mTextPaint,
5871                            wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5872                            mIncludePad);
5873                }
5874            } else if (shouldEllipsize) {
5875                result = new StaticLayout(mTransformed,
5876                        0, mTransformed.length(),
5877                        mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
5878                        mSpacingAdd, mIncludePad, effectiveEllipsize,
5879                        ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5880            } else {
5881                result = new StaticLayout(mTransformed, mTextPaint,
5882                        wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5883                        mIncludePad);
5884            }
5885        }
5886        return result;
5887    }
5888
5889    private boolean compressText(float width) {
5890        if (isHardwareAccelerated()) return false;
5891
5892        // Only compress the text if it hasn't been compressed by the previous pass
5893        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
5894                mTextPaint.getTextScaleX() == 1.0f) {
5895            final float textWidth = mLayout.getLineWidth(0);
5896            final float overflow = (textWidth + 1.0f - width) / width;
5897            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
5898                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
5899                post(new Runnable() {
5900                    public void run() {
5901                        requestLayout();
5902                    }
5903                });
5904                return true;
5905            }
5906        }
5907
5908        return false;
5909    }
5910
5911    private static int desired(Layout layout) {
5912        int n = layout.getLineCount();
5913        CharSequence text = layout.getText();
5914        float max = 0;
5915
5916        // if any line was wrapped, we can't use it.
5917        // but it's ok for the last line not to have a newline
5918
5919        for (int i = 0; i < n - 1; i++) {
5920            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
5921                return -1;
5922        }
5923
5924        for (int i = 0; i < n; i++) {
5925            max = Math.max(max, layout.getLineWidth(i));
5926        }
5927
5928        return (int) FloatMath.ceil(max);
5929    }
5930
5931    /**
5932     * Set whether the TextView includes extra top and bottom padding to make
5933     * room for accents that go above the normal ascent and descent.
5934     * The default is true.
5935     *
5936     * @see #getIncludeFontPadding()
5937     *
5938     * @attr ref android.R.styleable#TextView_includeFontPadding
5939     */
5940    public void setIncludeFontPadding(boolean includepad) {
5941        if (mIncludePad != includepad) {
5942            mIncludePad = includepad;
5943
5944            if (mLayout != null) {
5945                nullLayouts();
5946                requestLayout();
5947                invalidate();
5948            }
5949        }
5950    }
5951
5952    /**
5953     * Gets whether the TextView includes extra top and bottom padding to make
5954     * room for accents that go above the normal ascent and descent.
5955     *
5956     * @see #setIncludeFontPadding(boolean)
5957     *
5958     * @attr ref android.R.styleable#TextView_includeFontPadding
5959     */
5960    public boolean getIncludeFontPadding() {
5961        return mIncludePad;
5962    }
5963
5964    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
5965
5966    @Override
5967    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
5968        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
5969        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
5970        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
5971        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
5972
5973        int width;
5974        int height;
5975
5976        BoringLayout.Metrics boring = UNKNOWN_BORING;
5977        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
5978
5979        if (mTextDir == null) {
5980            resolveTextDirection();
5981        }
5982
5983        int des = -1;
5984        boolean fromexisting = false;
5985
5986        if (widthMode == MeasureSpec.EXACTLY) {
5987            // Parent has told us how big to be. So be it.
5988            width = widthSize;
5989        } else {
5990            if (mLayout != null && mEllipsize == null) {
5991                des = desired(mLayout);
5992            }
5993
5994            if (des < 0) {
5995                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
5996                if (boring != null) {
5997                    mBoring = boring;
5998                }
5999            } else {
6000                fromexisting = true;
6001            }
6002
6003            if (boring == null || boring == UNKNOWN_BORING) {
6004                if (des < 0) {
6005                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
6006                }
6007                width = des;
6008            } else {
6009                width = boring.width;
6010            }
6011
6012            final Drawables dr = mDrawables;
6013            if (dr != null) {
6014                width = Math.max(width, dr.mDrawableWidthTop);
6015                width = Math.max(width, dr.mDrawableWidthBottom);
6016            }
6017
6018            if (mHint != null) {
6019                int hintDes = -1;
6020                int hintWidth;
6021
6022                if (mHintLayout != null && mEllipsize == null) {
6023                    hintDes = desired(mHintLayout);
6024                }
6025
6026                if (hintDes < 0) {
6027                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
6028                    if (hintBoring != null) {
6029                        mHintBoring = hintBoring;
6030                    }
6031                }
6032
6033                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
6034                    if (hintDes < 0) {
6035                        hintDes = (int) FloatMath.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
6036                    }
6037                    hintWidth = hintDes;
6038                } else {
6039                    hintWidth = hintBoring.width;
6040                }
6041
6042                if (hintWidth > width) {
6043                    width = hintWidth;
6044                }
6045            }
6046
6047            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
6048
6049            if (mMaxWidthMode == EMS) {
6050                width = Math.min(width, mMaxWidth * getLineHeight());
6051            } else {
6052                width = Math.min(width, mMaxWidth);
6053            }
6054
6055            if (mMinWidthMode == EMS) {
6056                width = Math.max(width, mMinWidth * getLineHeight());
6057            } else {
6058                width = Math.max(width, mMinWidth);
6059            }
6060
6061            // Check against our minimum width
6062            width = Math.max(width, getSuggestedMinimumWidth());
6063
6064            if (widthMode == MeasureSpec.AT_MOST) {
6065                width = Math.min(widthSize, width);
6066            }
6067        }
6068
6069        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
6070        int unpaddedWidth = want;
6071
6072        if (mHorizontallyScrolling) want = VERY_WIDE;
6073
6074        int hintWant = want;
6075        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
6076
6077        if (mLayout == null) {
6078            makeNewLayout(want, hintWant, boring, hintBoring,
6079                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6080        } else {
6081            final boolean layoutChanged = (mLayout.getWidth() != want) ||
6082                    (hintWidth != hintWant) ||
6083                    (mLayout.getEllipsizedWidth() !=
6084                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
6085
6086            final boolean widthChanged = (mHint == null) &&
6087                    (mEllipsize == null) &&
6088                    (want > mLayout.getWidth()) &&
6089                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
6090
6091            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
6092
6093            if (layoutChanged || maximumChanged) {
6094                if (!maximumChanged && widthChanged) {
6095                    mLayout.increaseWidthTo(want);
6096                } else {
6097                    makeNewLayout(want, hintWant, boring, hintBoring,
6098                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6099                }
6100            } else {
6101                // Nothing has changed
6102            }
6103        }
6104
6105        if (heightMode == MeasureSpec.EXACTLY) {
6106            // Parent has told us how big to be. So be it.
6107            height = heightSize;
6108            mDesiredHeightAtMeasure = -1;
6109        } else {
6110            int desired = getDesiredHeight();
6111
6112            height = desired;
6113            mDesiredHeightAtMeasure = desired;
6114
6115            if (heightMode == MeasureSpec.AT_MOST) {
6116                height = Math.min(desired, heightSize);
6117            }
6118        }
6119
6120        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
6121        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
6122            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
6123        }
6124
6125        /*
6126         * We didn't let makeNewLayout() register to bring the cursor into view,
6127         * so do it here if there is any possibility that it is needed.
6128         */
6129        if (mMovement != null ||
6130            mLayout.getWidth() > unpaddedWidth ||
6131            mLayout.getHeight() > unpaddedHeight) {
6132            registerForPreDraw();
6133        } else {
6134            scrollTo(0, 0);
6135        }
6136
6137        setMeasuredDimension(width, height);
6138    }
6139
6140    private int getDesiredHeight() {
6141        return Math.max(
6142                getDesiredHeight(mLayout, true),
6143                getDesiredHeight(mHintLayout, mEllipsize != null));
6144    }
6145
6146    private int getDesiredHeight(Layout layout, boolean cap) {
6147        if (layout == null) {
6148            return 0;
6149        }
6150
6151        int linecount = layout.getLineCount();
6152        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
6153        int desired = layout.getLineTop(linecount);
6154
6155        final Drawables dr = mDrawables;
6156        if (dr != null) {
6157            desired = Math.max(desired, dr.mDrawableHeightLeft);
6158            desired = Math.max(desired, dr.mDrawableHeightRight);
6159        }
6160
6161        desired += pad;
6162
6163        if (mMaxMode == LINES) {
6164            /*
6165             * Don't cap the hint to a certain number of lines.
6166             * (Do cap it, though, if we have a maximum pixel height.)
6167             */
6168            if (cap) {
6169                if (linecount > mMaximum) {
6170                    desired = layout.getLineTop(mMaximum);
6171
6172                    if (dr != null) {
6173                        desired = Math.max(desired, dr.mDrawableHeightLeft);
6174                        desired = Math.max(desired, dr.mDrawableHeightRight);
6175                    }
6176
6177                    desired += pad;
6178                    linecount = mMaximum;
6179                }
6180            }
6181        } else {
6182            desired = Math.min(desired, mMaximum);
6183        }
6184
6185        if (mMinMode == LINES) {
6186            if (linecount < mMinimum) {
6187                desired += getLineHeight() * (mMinimum - linecount);
6188            }
6189        } else {
6190            desired = Math.max(desired, mMinimum);
6191        }
6192
6193        // Check against our minimum height
6194        desired = Math.max(desired, getSuggestedMinimumHeight());
6195
6196        return desired;
6197    }
6198
6199    /**
6200     * Check whether a change to the existing text layout requires a
6201     * new view layout.
6202     */
6203    private void checkForResize() {
6204        boolean sizeChanged = false;
6205
6206        if (mLayout != null) {
6207            // Check if our width changed
6208            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
6209                sizeChanged = true;
6210                invalidate();
6211            }
6212
6213            // Check if our height changed
6214            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
6215                int desiredHeight = getDesiredHeight();
6216
6217                if (desiredHeight != this.getHeight()) {
6218                    sizeChanged = true;
6219                }
6220            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
6221                if (mDesiredHeightAtMeasure >= 0) {
6222                    int desiredHeight = getDesiredHeight();
6223
6224                    if (desiredHeight != mDesiredHeightAtMeasure) {
6225                        sizeChanged = true;
6226                    }
6227                }
6228            }
6229        }
6230
6231        if (sizeChanged) {
6232            requestLayout();
6233            // caller will have already invalidated
6234        }
6235    }
6236
6237    /**
6238     * Check whether entirely new text requires a new view layout
6239     * or merely a new text layout.
6240     */
6241    private void checkForRelayout() {
6242        // If we have a fixed width, we can just swap in a new text layout
6243        // if the text height stays the same or if the view height is fixed.
6244
6245        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
6246                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
6247                (mHint == null || mHintLayout != null) &&
6248                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
6249            // Static width, so try making a new text layout.
6250
6251            int oldht = mLayout.getHeight();
6252            int want = mLayout.getWidth();
6253            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
6254
6255            /*
6256             * No need to bring the text into view, since the size is not
6257             * changing (unless we do the requestLayout(), in which case it
6258             * will happen at measure).
6259             */
6260            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
6261                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
6262                          false);
6263
6264            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
6265                // In a fixed-height view, so use our new text layout.
6266                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
6267                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
6268                    invalidate();
6269                    return;
6270                }
6271
6272                // Dynamic height, but height has stayed the same,
6273                // so use our new text layout.
6274                if (mLayout.getHeight() == oldht &&
6275                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
6276                    invalidate();
6277                    return;
6278                }
6279            }
6280
6281            // We lose: the height has changed and we have a dynamic height.
6282            // Request a new view layout using our new text layout.
6283            requestLayout();
6284            invalidate();
6285        } else {
6286            // Dynamic width, so we have no choice but to request a new
6287            // view layout with a new text layout.
6288            nullLayouts();
6289            requestLayout();
6290            invalidate();
6291        }
6292    }
6293
6294    @Override
6295    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
6296        super.onLayout(changed, left, top, right, bottom);
6297        if (changed && mEditor != null) mEditor.invalidateTextDisplayList();
6298    }
6299
6300    private boolean isShowingHint() {
6301        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
6302    }
6303
6304    /**
6305     * Returns true if anything changed.
6306     */
6307    private boolean bringTextIntoView() {
6308        Layout layout = isShowingHint() ? mHintLayout : mLayout;
6309        int line = 0;
6310        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6311            line = layout.getLineCount() - 1;
6312        }
6313
6314        Layout.Alignment a = layout.getParagraphAlignment(line);
6315        int dir = layout.getParagraphDirection(line);
6316        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6317        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6318        int ht = layout.getHeight();
6319
6320        int scrollx, scrolly;
6321
6322        // Convert to left, center, or right alignment.
6323        if (a == Layout.Alignment.ALIGN_NORMAL) {
6324            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
6325                Layout.Alignment.ALIGN_RIGHT;
6326        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
6327            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
6328                Layout.Alignment.ALIGN_LEFT;
6329        }
6330
6331        if (a == Layout.Alignment.ALIGN_CENTER) {
6332            /*
6333             * Keep centered if possible, or, if it is too wide to fit,
6334             * keep leading edge in view.
6335             */
6336
6337            int left = (int) FloatMath.floor(layout.getLineLeft(line));
6338            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6339
6340            if (right - left < hspace) {
6341                scrollx = (right + left) / 2 - hspace / 2;
6342            } else {
6343                if (dir < 0) {
6344                    scrollx = right - hspace;
6345                } else {
6346                    scrollx = left;
6347                }
6348            }
6349        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
6350            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6351            scrollx = right - hspace;
6352        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
6353            scrollx = (int) FloatMath.floor(layout.getLineLeft(line));
6354        }
6355
6356        if (ht < vspace) {
6357            scrolly = 0;
6358        } else {
6359            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6360                scrolly = ht - vspace;
6361            } else {
6362                scrolly = 0;
6363            }
6364        }
6365
6366        if (scrollx != mScrollX || scrolly != mScrollY) {
6367            scrollTo(scrollx, scrolly);
6368            return true;
6369        } else {
6370            return false;
6371        }
6372    }
6373
6374    /**
6375     * Move the point, specified by the offset, into the view if it is needed.
6376     * This has to be called after layout. Returns true if anything changed.
6377     */
6378    public boolean bringPointIntoView(int offset) {
6379        boolean changed = false;
6380
6381        Layout layout = isShowingHint() ? mHintLayout: mLayout;
6382
6383        if (layout == null) return changed;
6384
6385        int line = layout.getLineForOffset(offset);
6386
6387        // FIXME: Is it okay to truncate this, or should we round?
6388        final int x = (int)layout.getPrimaryHorizontal(offset);
6389        final int top = layout.getLineTop(line);
6390        final int bottom = layout.getLineTop(line + 1);
6391
6392        int left = (int) FloatMath.floor(layout.getLineLeft(line));
6393        int right = (int) FloatMath.ceil(layout.getLineRight(line));
6394        int ht = layout.getHeight();
6395
6396        int grav;
6397
6398        switch (layout.getParagraphAlignment(line)) {
6399            case ALIGN_LEFT:
6400                grav = 1;
6401                break;
6402            case ALIGN_RIGHT:
6403                grav = -1;
6404                break;
6405            case ALIGN_NORMAL:
6406                grav = layout.getParagraphDirection(line);
6407                break;
6408            case ALIGN_OPPOSITE:
6409                grav = -layout.getParagraphDirection(line);
6410                break;
6411            case ALIGN_CENTER:
6412            default:
6413                grav = 0;
6414                break;
6415        }
6416
6417        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6418        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6419
6420        int hslack = (bottom - top) / 2;
6421        int vslack = hslack;
6422
6423        if (vslack > vspace / 4)
6424            vslack = vspace / 4;
6425        if (hslack > hspace / 4)
6426            hslack = hspace / 4;
6427
6428        int hs = mScrollX;
6429        int vs = mScrollY;
6430
6431        if (top - vs < vslack)
6432            vs = top - vslack;
6433        if (bottom - vs > vspace - vslack)
6434            vs = bottom - (vspace - vslack);
6435        if (ht - vs < vspace)
6436            vs = ht - vspace;
6437        if (0 - vs > 0)
6438            vs = 0;
6439
6440        if (grav != 0) {
6441            if (x - hs < hslack) {
6442                hs = x - hslack;
6443            }
6444            if (x - hs > hspace - hslack) {
6445                hs = x - (hspace - hslack);
6446            }
6447        }
6448
6449        if (grav < 0) {
6450            if (left - hs > 0)
6451                hs = left;
6452            if (right - hs < hspace)
6453                hs = right - hspace;
6454        } else if (grav > 0) {
6455            if (right - hs < hspace)
6456                hs = right - hspace;
6457            if (left - hs > 0)
6458                hs = left;
6459        } else /* grav == 0 */ {
6460            if (right - left <= hspace) {
6461                /*
6462                 * If the entire text fits, center it exactly.
6463                 */
6464                hs = left - (hspace - (right - left)) / 2;
6465            } else if (x > right - hslack) {
6466                /*
6467                 * If we are near the right edge, keep the right edge
6468                 * at the edge of the view.
6469                 */
6470                hs = right - hspace;
6471            } else if (x < left + hslack) {
6472                /*
6473                 * If we are near the left edge, keep the left edge
6474                 * at the edge of the view.
6475                 */
6476                hs = left;
6477            } else if (left > hs) {
6478                /*
6479                 * Is there whitespace visible at the left?  Fix it if so.
6480                 */
6481                hs = left;
6482            } else if (right < hs + hspace) {
6483                /*
6484                 * Is there whitespace visible at the right?  Fix it if so.
6485                 */
6486                hs = right - hspace;
6487            } else {
6488                /*
6489                 * Otherwise, float as needed.
6490                 */
6491                if (x - hs < hslack) {
6492                    hs = x - hslack;
6493                }
6494                if (x - hs > hspace - hslack) {
6495                    hs = x - (hspace - hslack);
6496                }
6497            }
6498        }
6499
6500        if (hs != mScrollX || vs != mScrollY) {
6501            if (mScroller == null) {
6502                scrollTo(hs, vs);
6503            } else {
6504                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
6505                int dx = hs - mScrollX;
6506                int dy = vs - mScrollY;
6507
6508                if (duration > ANIMATED_SCROLL_GAP) {
6509                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
6510                    awakenScrollBars(mScroller.getDuration());
6511                    invalidate();
6512                } else {
6513                    if (!mScroller.isFinished()) {
6514                        mScroller.abortAnimation();
6515                    }
6516
6517                    scrollBy(dx, dy);
6518                }
6519
6520                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
6521            }
6522
6523            changed = true;
6524        }
6525
6526        if (isFocused()) {
6527            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
6528            // requestRectangleOnScreen() is in terms of content coordinates.
6529
6530            // The offsets here are to ensure the rectangle we are using is
6531            // within our view bounds, in case the cursor is on the far left
6532            // or right.  If it isn't withing the bounds, then this request
6533            // will be ignored.
6534            if (mTempRect == null) mTempRect = new Rect();
6535            mTempRect.set(x - 2, top, x + 2, bottom);
6536            getInterestingRect(mTempRect, line);
6537            mTempRect.offset(mScrollX, mScrollY);
6538
6539            if (requestRectangleOnScreen(mTempRect)) {
6540                changed = true;
6541            }
6542        }
6543
6544        return changed;
6545    }
6546
6547    /**
6548     * Move the cursor, if needed, so that it is at an offset that is visible
6549     * to the user.  This will not move the cursor if it represents more than
6550     * one character (a selection range).  This will only work if the
6551     * TextView contains spannable text; otherwise it will do nothing.
6552     *
6553     * @return True if the cursor was actually moved, false otherwise.
6554     */
6555    public boolean moveCursorToVisibleOffset() {
6556        if (!(mText instanceof Spannable)) {
6557            return false;
6558        }
6559        int start = getSelectionStart();
6560        int end = getSelectionEnd();
6561        if (start != end) {
6562            return false;
6563        }
6564
6565        // First: make sure the line is visible on screen:
6566
6567        int line = mLayout.getLineForOffset(start);
6568
6569        final int top = mLayout.getLineTop(line);
6570        final int bottom = mLayout.getLineTop(line + 1);
6571        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6572        int vslack = (bottom - top) / 2;
6573        if (vslack > vspace / 4)
6574            vslack = vspace / 4;
6575        final int vs = mScrollY;
6576
6577        if (top < (vs+vslack)) {
6578            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
6579        } else if (bottom > (vspace+vs-vslack)) {
6580            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
6581        }
6582
6583        // Next: make sure the character is visible on screen:
6584
6585        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6586        final int hs = mScrollX;
6587        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
6588        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
6589
6590        // line might contain bidirectional text
6591        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
6592        final int highChar = leftChar > rightChar ? leftChar : rightChar;
6593
6594        int newStart = start;
6595        if (newStart < lowChar) {
6596            newStart = lowChar;
6597        } else if (newStart > highChar) {
6598            newStart = highChar;
6599        }
6600
6601        if (newStart != start) {
6602            Selection.setSelection((Spannable)mText, newStart);
6603            return true;
6604        }
6605
6606        return false;
6607    }
6608
6609    @Override
6610    public void computeScroll() {
6611        if (mScroller != null) {
6612            if (mScroller.computeScrollOffset()) {
6613                mScrollX = mScroller.getCurrX();
6614                mScrollY = mScroller.getCurrY();
6615                invalidateParentCaches();
6616                postInvalidate();  // So we draw again
6617            }
6618        }
6619    }
6620
6621    private void getInterestingRect(Rect r, int line) {
6622        convertFromViewportToContentCoordinates(r);
6623
6624        // Rectangle can can be expanded on first and last line to take
6625        // padding into account.
6626        // TODO Take left/right padding into account too?
6627        if (line == 0) r.top -= getExtendedPaddingTop();
6628        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
6629    }
6630
6631    private void convertFromViewportToContentCoordinates(Rect r) {
6632        final int horizontalOffset = viewportToContentHorizontalOffset();
6633        r.left += horizontalOffset;
6634        r.right += horizontalOffset;
6635
6636        final int verticalOffset = viewportToContentVerticalOffset();
6637        r.top += verticalOffset;
6638        r.bottom += verticalOffset;
6639    }
6640
6641    int viewportToContentHorizontalOffset() {
6642        return getCompoundPaddingLeft() - mScrollX;
6643    }
6644
6645    int viewportToContentVerticalOffset() {
6646        int offset = getExtendedPaddingTop() - mScrollY;
6647        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6648            offset += getVerticalOffset(false);
6649        }
6650        return offset;
6651    }
6652
6653    @Override
6654    public void debug(int depth) {
6655        super.debug(depth);
6656
6657        String output = debugIndent(depth);
6658        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
6659                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
6660                + "} ";
6661
6662        if (mText != null) {
6663
6664            output += "mText=\"" + mText + "\" ";
6665            if (mLayout != null) {
6666                output += "mLayout width=" + mLayout.getWidth()
6667                        + " height=" + mLayout.getHeight();
6668            }
6669        } else {
6670            output += "mText=NULL";
6671        }
6672        Log.d(VIEW_LOG_TAG, output);
6673    }
6674
6675    /**
6676     * Convenience for {@link Selection#getSelectionStart}.
6677     */
6678    @ViewDebug.ExportedProperty(category = "text")
6679    public int getSelectionStart() {
6680        return Selection.getSelectionStart(getText());
6681    }
6682
6683    /**
6684     * Convenience for {@link Selection#getSelectionEnd}.
6685     */
6686    @ViewDebug.ExportedProperty(category = "text")
6687    public int getSelectionEnd() {
6688        return Selection.getSelectionEnd(getText());
6689    }
6690
6691    /**
6692     * Return true iff there is a selection inside this text view.
6693     */
6694    public boolean hasSelection() {
6695        final int selectionStart = getSelectionStart();
6696        final int selectionEnd = getSelectionEnd();
6697
6698        return selectionStart >= 0 && selectionStart != selectionEnd;
6699    }
6700
6701    /**
6702     * Sets the properties of this field (lines, horizontally scrolling,
6703     * transformation method) to be for a single-line input.
6704     *
6705     * @attr ref android.R.styleable#TextView_singleLine
6706     */
6707    public void setSingleLine() {
6708        setSingleLine(true);
6709    }
6710
6711    /**
6712     * Sets the properties of this field to transform input to ALL CAPS
6713     * display. This may use a "small caps" formatting if available.
6714     * This setting will be ignored if this field is editable or selectable.
6715     *
6716     * This call replaces the current transformation method. Disabling this
6717     * will not necessarily restore the previous behavior from before this
6718     * was enabled.
6719     *
6720     * @see #setTransformationMethod(TransformationMethod)
6721     * @attr ref android.R.styleable#TextView_textAllCaps
6722     */
6723    public void setAllCaps(boolean allCaps) {
6724        if (allCaps) {
6725            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
6726        } else {
6727            setTransformationMethod(null);
6728        }
6729    }
6730
6731    /**
6732     * If true, sets the properties of this field (number of lines, horizontally scrolling,
6733     * transformation method) to be for a single-line input; if false, restores these to the default
6734     * conditions.
6735     *
6736     * Note that the default conditions are not necessarily those that were in effect prior this
6737     * method, and you may want to reset these properties to your custom values.
6738     *
6739     * @attr ref android.R.styleable#TextView_singleLine
6740     */
6741    @android.view.RemotableViewMethod
6742    public void setSingleLine(boolean singleLine) {
6743        // Could be used, but may break backward compatibility.
6744        // if (mSingleLine == singleLine) return;
6745        setInputTypeSingleLine(singleLine);
6746        applySingleLine(singleLine, true, true);
6747    }
6748
6749    /**
6750     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
6751     * @param singleLine
6752     */
6753    private void setInputTypeSingleLine(boolean singleLine) {
6754        if (mEditor != null &&
6755                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6756            if (singleLine) {
6757                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6758            } else {
6759                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6760            }
6761        }
6762    }
6763
6764    private void applySingleLine(boolean singleLine, boolean applyTransformation,
6765            boolean changeMaxLines) {
6766        mSingleLine = singleLine;
6767        if (singleLine) {
6768            setLines(1);
6769            setHorizontallyScrolling(true);
6770            if (applyTransformation) {
6771                setTransformationMethod(SingleLineTransformationMethod.getInstance());
6772            }
6773        } else {
6774            if (changeMaxLines) {
6775                setMaxLines(Integer.MAX_VALUE);
6776            }
6777            setHorizontallyScrolling(false);
6778            if (applyTransformation) {
6779                setTransformationMethod(null);
6780            }
6781        }
6782    }
6783
6784    /**
6785     * Causes words in the text that are longer than the view is wide
6786     * to be ellipsized instead of broken in the middle.  You may also
6787     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
6788     * to constrain the text to a single line.  Use <code>null</code>
6789     * to turn off ellipsizing.
6790     *
6791     * If {@link #setMaxLines} has been used to set two or more lines,
6792     * {@link android.text.TextUtils.TruncateAt#END} and
6793     * {@link android.text.TextUtils.TruncateAt#MARQUEE}* are only supported
6794     * (other ellipsizing types will not do anything).
6795     *
6796     * @attr ref android.R.styleable#TextView_ellipsize
6797     */
6798    public void setEllipsize(TextUtils.TruncateAt where) {
6799        // TruncateAt is an enum. != comparison is ok between these singleton objects.
6800        if (mEllipsize != where) {
6801            mEllipsize = where;
6802
6803            if (mLayout != null) {
6804                nullLayouts();
6805                requestLayout();
6806                invalidate();
6807            }
6808        }
6809    }
6810
6811    /**
6812     * Sets how many times to repeat the marquee animation. Only applied if the
6813     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
6814     *
6815     * @see #getMarqueeRepeatLimit()
6816     *
6817     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
6818     */
6819    public void setMarqueeRepeatLimit(int marqueeLimit) {
6820        mMarqueeRepeatLimit = marqueeLimit;
6821    }
6822
6823    /**
6824     * Gets the number of times the marquee animation is repeated. Only meaningful if the
6825     * TextView has marquee enabled.
6826     *
6827     * @return the number of times the marquee animation is repeated. -1 if the animation
6828     * repeats indefinitely
6829     *
6830     * @see #setMarqueeRepeatLimit(int)
6831     *
6832     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
6833     */
6834    public int getMarqueeRepeatLimit() {
6835        return mMarqueeRepeatLimit;
6836    }
6837
6838    /**
6839     * Returns where, if anywhere, words that are longer than the view
6840     * is wide should be ellipsized.
6841     */
6842    @ViewDebug.ExportedProperty
6843    public TextUtils.TruncateAt getEllipsize() {
6844        return mEllipsize;
6845    }
6846
6847    /**
6848     * Set the TextView so that when it takes focus, all the text is
6849     * selected.
6850     *
6851     * @attr ref android.R.styleable#TextView_selectAllOnFocus
6852     */
6853    @android.view.RemotableViewMethod
6854    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
6855        createEditorIfNeeded();
6856        mEditor.mSelectAllOnFocus = selectAllOnFocus;
6857
6858        if (selectAllOnFocus && !(mText instanceof Spannable)) {
6859            setText(mText, BufferType.SPANNABLE);
6860        }
6861    }
6862
6863    /**
6864     * Set whether the cursor is visible. The default is true. Note that this property only
6865     * makes sense for editable TextView.
6866     *
6867     * @see #isCursorVisible()
6868     *
6869     * @attr ref android.R.styleable#TextView_cursorVisible
6870     */
6871    @android.view.RemotableViewMethod
6872    public void setCursorVisible(boolean visible) {
6873        if (visible && mEditor == null) return; // visible is the default value with no edit data
6874        createEditorIfNeeded();
6875        if (mEditor.mCursorVisible != visible) {
6876            mEditor.mCursorVisible = visible;
6877            invalidate();
6878
6879            mEditor.makeBlink();
6880
6881            // InsertionPointCursorController depends on mCursorVisible
6882            mEditor.prepareCursorControllers();
6883        }
6884    }
6885
6886    /**
6887     * @return whether or not the cursor is visible (assuming this TextView is editable)
6888     *
6889     * @see #setCursorVisible(boolean)
6890     *
6891     * @attr ref android.R.styleable#TextView_cursorVisible
6892     */
6893    public boolean isCursorVisible() {
6894        // true is the default value
6895        return mEditor == null ? true : mEditor.mCursorVisible;
6896    }
6897
6898    private boolean canMarquee() {
6899        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
6900        return width > 0 && (mLayout.getLineWidth(0) > width ||
6901                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
6902                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
6903    }
6904
6905    private void startMarquee() {
6906        // Do not ellipsize EditText
6907        if (getKeyListener() != null) return;
6908
6909        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
6910            return;
6911        }
6912
6913        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
6914                getLineCount() == 1 && canMarquee()) {
6915
6916            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6917                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
6918                final Layout tmp = mLayout;
6919                mLayout = mSavedMarqueeModeLayout;
6920                mSavedMarqueeModeLayout = tmp;
6921                setHorizontalFadingEdgeEnabled(true);
6922                requestLayout();
6923                invalidate();
6924            }
6925
6926            if (mMarquee == null) mMarquee = new Marquee(this);
6927            mMarquee.start(mMarqueeRepeatLimit);
6928        }
6929    }
6930
6931    private void stopMarquee() {
6932        if (mMarquee != null && !mMarquee.isStopped()) {
6933            mMarquee.stop();
6934        }
6935
6936        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
6937            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
6938            final Layout tmp = mSavedMarqueeModeLayout;
6939            mSavedMarqueeModeLayout = mLayout;
6940            mLayout = tmp;
6941            setHorizontalFadingEdgeEnabled(false);
6942            requestLayout();
6943            invalidate();
6944        }
6945    }
6946
6947    private void startStopMarquee(boolean start) {
6948        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6949            if (start) {
6950                startMarquee();
6951            } else {
6952                stopMarquee();
6953            }
6954        }
6955    }
6956
6957    /**
6958     * This method is called when the text is changed, in case any subclasses
6959     * would like to know.
6960     *
6961     * Within <code>text</code>, the <code>lengthAfter</code> characters
6962     * beginning at <code>start</code> have just replaced old text that had
6963     * length <code>lengthBefore</code>. It is an error to attempt to make
6964     * changes to <code>text</code> from this callback.
6965     *
6966     * @param text The text the TextView is displaying
6967     * @param start The offset of the start of the range of the text that was
6968     * modified
6969     * @param lengthBefore The length of the former text that has been replaced
6970     * @param lengthAfter The length of the replacement modified text
6971     */
6972    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
6973        // intentionally empty, template pattern method can be overridden by subclasses
6974    }
6975
6976    /**
6977     * This method is called when the selection has changed, in case any
6978     * subclasses would like to know.
6979     *
6980     * @param selStart The new selection start location.
6981     * @param selEnd The new selection end location.
6982     */
6983    protected void onSelectionChanged(int selStart, int selEnd) {
6984        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
6985    }
6986
6987    /**
6988     * Adds a TextWatcher to the list of those whose methods are called
6989     * whenever this TextView's text changes.
6990     * <p>
6991     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
6992     * not called after {@link #setText} calls.  Now, doing {@link #setText}
6993     * if there are any text changed listeners forces the buffer type to
6994     * Editable if it would not otherwise be and does call this method.
6995     */
6996    public void addTextChangedListener(TextWatcher watcher) {
6997        if (mListeners == null) {
6998            mListeners = new ArrayList<TextWatcher>();
6999        }
7000
7001        mListeners.add(watcher);
7002    }
7003
7004    /**
7005     * Removes the specified TextWatcher from the list of those whose
7006     * methods are called
7007     * whenever this TextView's text changes.
7008     */
7009    public void removeTextChangedListener(TextWatcher watcher) {
7010        if (mListeners != null) {
7011            int i = mListeners.indexOf(watcher);
7012
7013            if (i >= 0) {
7014                mListeners.remove(i);
7015            }
7016        }
7017    }
7018
7019    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
7020        if (mListeners != null) {
7021            final ArrayList<TextWatcher> list = mListeners;
7022            final int count = list.size();
7023            for (int i = 0; i < count; i++) {
7024                list.get(i).beforeTextChanged(text, start, before, after);
7025            }
7026        }
7027
7028        // The spans that are inside or intersect the modified region no longer make sense
7029        removeIntersectingSpans(start, start + before, SpellCheckSpan.class);
7030        removeIntersectingSpans(start, start + before, SuggestionSpan.class);
7031    }
7032
7033    // Removes all spans that are inside or actually overlap the start..end range
7034    private <T> void removeIntersectingSpans(int start, int end, Class<T> type) {
7035        if (!(mText instanceof Editable)) return;
7036        Editable text = (Editable) mText;
7037
7038        T[] spans = text.getSpans(start, end, type);
7039        final int length = spans.length;
7040        for (int i = 0; i < length; i++) {
7041            final int s = text.getSpanStart(spans[i]);
7042            final int e = text.getSpanEnd(spans[i]);
7043            // Spans that are adjacent to the edited region will be handled in
7044            // updateSpellCheckSpans. Result depends on what will be added (space or text)
7045            if (e == start || s == end) break;
7046            text.removeSpan(spans[i]);
7047        }
7048    }
7049
7050    /**
7051     * Not private so it can be called from an inner class without going
7052     * through a thunk.
7053     */
7054    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
7055        if (mListeners != null) {
7056            final ArrayList<TextWatcher> list = mListeners;
7057            final int count = list.size();
7058            for (int i = 0; i < count; i++) {
7059                list.get(i).onTextChanged(text, start, before, after);
7060            }
7061        }
7062
7063        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
7064    }
7065
7066    /**
7067     * Not private so it can be called from an inner class without going
7068     * through a thunk.
7069     */
7070    void sendAfterTextChanged(Editable text) {
7071        if (mListeners != null) {
7072            final ArrayList<TextWatcher> list = mListeners;
7073            final int count = list.size();
7074            for (int i = 0; i < count; i++) {
7075                list.get(i).afterTextChanged(text);
7076            }
7077        }
7078    }
7079
7080    void updateAfterEdit() {
7081        invalidate();
7082        int curs = getSelectionStart();
7083
7084        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7085            registerForPreDraw();
7086        }
7087
7088        if (curs >= 0) {
7089            mHighlightPathBogus = true;
7090            if (mEditor != null) mEditor.makeBlink();
7091            bringPointIntoView(curs);
7092        }
7093
7094        checkForResize();
7095    }
7096
7097    /**
7098     * Not private so it can be called from an inner class without going
7099     * through a thunk.
7100     */
7101    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
7102        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7103        if (ims == null || ims.mBatchEditNesting == 0) {
7104            updateAfterEdit();
7105        }
7106        if (ims != null) {
7107            ims.mContentChanged = true;
7108            if (ims.mChangedStart < 0) {
7109                ims.mChangedStart = start;
7110                ims.mChangedEnd = start+before;
7111            } else {
7112                ims.mChangedStart = Math.min(ims.mChangedStart, start);
7113                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
7114            }
7115            ims.mChangedDelta += after-before;
7116        }
7117
7118        sendOnTextChanged(buffer, start, before, after);
7119        onTextChanged(buffer, start, before, after);
7120    }
7121
7122    /**
7123     * Not private so it can be called from an inner class without going
7124     * through a thunk.
7125     */
7126    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
7127        // XXX Make the start and end move together if this ends up
7128        // spending too much time invalidating.
7129
7130        boolean selChanged = false;
7131        int newSelStart=-1, newSelEnd=-1;
7132
7133        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7134
7135        if (what == Selection.SELECTION_END) {
7136            selChanged = true;
7137            newSelEnd = newStart;
7138
7139            if (oldStart >= 0 || newStart >= 0) {
7140                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
7141                registerForPreDraw();
7142                if (mEditor != null) mEditor.makeBlink();
7143            }
7144        }
7145
7146        if (what == Selection.SELECTION_START) {
7147            selChanged = true;
7148            newSelStart = newStart;
7149
7150            if (oldStart >= 0 || newStart >= 0) {
7151                int end = Selection.getSelectionEnd(buf);
7152                invalidateCursor(end, oldStart, newStart);
7153            }
7154        }
7155
7156        if (selChanged) {
7157            mHighlightPathBogus = true;
7158            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
7159
7160            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
7161                if (newSelStart < 0) {
7162                    newSelStart = Selection.getSelectionStart(buf);
7163                }
7164                if (newSelEnd < 0) {
7165                    newSelEnd = Selection.getSelectionEnd(buf);
7166                }
7167                onSelectionChanged(newSelStart, newSelEnd);
7168            }
7169        }
7170
7171        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
7172                what instanceof CharacterStyle) {
7173            if (ims == null || ims.mBatchEditNesting == 0) {
7174                invalidate();
7175                mHighlightPathBogus = true;
7176                checkForResize();
7177            } else {
7178                ims.mContentChanged = true;
7179            }
7180            if (mEditor != null) {
7181                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
7182                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
7183            }
7184        }
7185
7186        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
7187            mHighlightPathBogus = true;
7188            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
7189                ims.mSelectionModeChanged = true;
7190            }
7191
7192            if (Selection.getSelectionStart(buf) >= 0) {
7193                if (ims == null || ims.mBatchEditNesting == 0) {
7194                    invalidateCursor();
7195                } else {
7196                    ims.mCursorChanged = true;
7197                }
7198            }
7199        }
7200
7201        if (what instanceof ParcelableSpan) {
7202            // If this is a span that can be sent to a remote process,
7203            // the current extract editor would be interested in it.
7204            if (ims != null && ims.mExtractedTextRequest != null) {
7205                if (ims.mBatchEditNesting != 0) {
7206                    if (oldStart >= 0) {
7207                        if (ims.mChangedStart > oldStart) {
7208                            ims.mChangedStart = oldStart;
7209                        }
7210                        if (ims.mChangedStart > oldEnd) {
7211                            ims.mChangedStart = oldEnd;
7212                        }
7213                    }
7214                    if (newStart >= 0) {
7215                        if (ims.mChangedStart > newStart) {
7216                            ims.mChangedStart = newStart;
7217                        }
7218                        if (ims.mChangedStart > newEnd) {
7219                            ims.mChangedStart = newEnd;
7220                        }
7221                    }
7222                } else {
7223                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
7224                            + oldStart + "-" + oldEnd + ","
7225                            + newStart + "-" + newEnd + " " + what);
7226                    ims.mContentChanged = true;
7227                }
7228            }
7229        }
7230
7231        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
7232                what instanceof SpellCheckSpan) {
7233            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
7234        }
7235    }
7236
7237    /**
7238     * @hide
7239     */
7240    @Override
7241    public void dispatchFinishTemporaryDetach() {
7242        mDispatchTemporaryDetach = true;
7243        super.dispatchFinishTemporaryDetach();
7244        mDispatchTemporaryDetach = false;
7245    }
7246
7247    @Override
7248    public void onStartTemporaryDetach() {
7249        super.onStartTemporaryDetach();
7250        // Only track when onStartTemporaryDetach() is called directly,
7251        // usually because this instance is an editable field in a list
7252        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
7253
7254        // Tell the editor that we are temporarily detached. It can use this to preserve
7255        // selection state as needed.
7256        if (mEditor != null) mEditor.mTemporaryDetach = true;
7257    }
7258
7259    @Override
7260    public void onFinishTemporaryDetach() {
7261        super.onFinishTemporaryDetach();
7262        // Only track when onStartTemporaryDetach() is called directly,
7263        // usually because this instance is an editable field in a list
7264        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
7265        if (mEditor != null) mEditor.mTemporaryDetach = false;
7266    }
7267
7268    @Override
7269    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
7270        if (mTemporaryDetach) {
7271            // If we are temporarily in the detach state, then do nothing.
7272            super.onFocusChanged(focused, direction, previouslyFocusedRect);
7273            return;
7274        }
7275
7276        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
7277
7278        if (focused) {
7279            if (mText instanceof Spannable) {
7280                Spannable sp = (Spannable) mText;
7281                MetaKeyKeyListener.resetMetaState(sp);
7282            }
7283        }
7284
7285        startStopMarquee(focused);
7286
7287        if (mTransformation != null) {
7288            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
7289        }
7290
7291        super.onFocusChanged(focused, direction, previouslyFocusedRect);
7292    }
7293
7294    @Override
7295    public void onWindowFocusChanged(boolean hasWindowFocus) {
7296        super.onWindowFocusChanged(hasWindowFocus);
7297
7298        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
7299
7300        startStopMarquee(hasWindowFocus);
7301    }
7302
7303    @Override
7304    protected void onVisibilityChanged(View changedView, int visibility) {
7305        super.onVisibilityChanged(changedView, visibility);
7306        if (mEditor != null && visibility != VISIBLE) {
7307            mEditor.hideControllers();
7308        }
7309    }
7310
7311    /**
7312     * Use {@link BaseInputConnection#removeComposingSpans
7313     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
7314     * state from this text view.
7315     */
7316    public void clearComposingText() {
7317        if (mText instanceof Spannable) {
7318            BaseInputConnection.removeComposingSpans((Spannable)mText);
7319        }
7320    }
7321
7322    @Override
7323    public void setSelected(boolean selected) {
7324        boolean wasSelected = isSelected();
7325
7326        super.setSelected(selected);
7327
7328        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7329            if (selected) {
7330                startMarquee();
7331            } else {
7332                stopMarquee();
7333            }
7334        }
7335    }
7336
7337    @Override
7338    public boolean onTouchEvent(MotionEvent event) {
7339        final int action = event.getActionMasked();
7340
7341        if (mEditor != null) mEditor.onTouchEvent(event);
7342
7343        final boolean superResult = super.onTouchEvent(event);
7344
7345        /*
7346         * Don't handle the release after a long press, because it will
7347         * move the selection away from whatever the menu action was
7348         * trying to affect.
7349         */
7350        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
7351            mEditor.mDiscardNextActionUp = false;
7352            return superResult;
7353        }
7354
7355        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
7356                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
7357
7358         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
7359                && mText instanceof Spannable && mLayout != null) {
7360            boolean handled = false;
7361
7362            if (mMovement != null) {
7363                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
7364            }
7365
7366            final boolean textIsSelectable = isTextSelectable();
7367            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
7368                // The LinkMovementMethod which should handle taps on links has not been installed
7369                // on non editable text that support text selection.
7370                // We reproduce its behavior here to open links for these.
7371                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
7372                        getSelectionEnd(), ClickableSpan.class);
7373
7374                if (links.length > 0) {
7375                    links[0].onClick(this);
7376                    handled = true;
7377                }
7378            }
7379
7380            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
7381                // Show the IME, except when selecting in read-only text.
7382                final InputMethodManager imm = InputMethodManager.peekInstance();
7383                viewClicked(imm);
7384                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
7385                    handled |= imm != null && imm.showSoftInput(this, 0);
7386                }
7387
7388                // The above condition ensures that the mEditor is not null
7389                mEditor.onTouchUpEvent(event);
7390
7391                handled = true;
7392            }
7393
7394            if (handled) {
7395                return true;
7396            }
7397        }
7398
7399        return superResult;
7400    }
7401
7402    @Override
7403    public boolean onGenericMotionEvent(MotionEvent event) {
7404        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7405            try {
7406                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
7407                    return true;
7408                }
7409            } catch (AbstractMethodError ex) {
7410                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
7411                // Ignore its absence in case third party applications implemented the
7412                // interface directly.
7413            }
7414        }
7415        return super.onGenericMotionEvent(event);
7416    }
7417
7418    /**
7419     * @return True iff this TextView contains a text that can be edited, or if this is
7420     * a selectable TextView.
7421     */
7422    boolean isTextEditable() {
7423        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
7424    }
7425
7426    /**
7427     * Returns true, only while processing a touch gesture, if the initial
7428     * touch down event caused focus to move to the text view and as a result
7429     * its selection changed.  Only valid while processing the touch gesture
7430     * of interest, in an editable text view.
7431     */
7432    public boolean didTouchFocusSelect() {
7433        return mEditor != null && mEditor.mTouchFocusSelected;
7434    }
7435
7436    @Override
7437    public void cancelLongPress() {
7438        super.cancelLongPress();
7439        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
7440    }
7441
7442    @Override
7443    public boolean onTrackballEvent(MotionEvent event) {
7444        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7445            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
7446                return true;
7447            }
7448        }
7449
7450        return super.onTrackballEvent(event);
7451    }
7452
7453    public void setScroller(Scroller s) {
7454        mScroller = s;
7455    }
7456
7457    @Override
7458    protected float getLeftFadingEdgeStrength() {
7459        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7460                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7461            if (mMarquee != null && !mMarquee.isStopped()) {
7462                final Marquee marquee = mMarquee;
7463                if (marquee.shouldDrawLeftFade()) {
7464                    return marquee.mScroll / getHorizontalFadingEdgeLength();
7465                } else {
7466                    return 0.0f;
7467                }
7468            } else if (getLineCount() == 1) {
7469                final int layoutDirection = getResolvedLayoutDirection();
7470                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7471                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7472                    case Gravity.LEFT:
7473                        return 0.0f;
7474                    case Gravity.RIGHT:
7475                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
7476                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
7477                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
7478                    case Gravity.CENTER_HORIZONTAL:
7479                        return 0.0f;
7480                }
7481            }
7482        }
7483        return super.getLeftFadingEdgeStrength();
7484    }
7485
7486    @Override
7487    protected float getRightFadingEdgeStrength() {
7488        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7489                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7490            if (mMarquee != null && !mMarquee.isStopped()) {
7491                final Marquee marquee = mMarquee;
7492                return (marquee.mMaxFadeScroll - marquee.mScroll) / getHorizontalFadingEdgeLength();
7493            } else if (getLineCount() == 1) {
7494                final int layoutDirection = getResolvedLayoutDirection();
7495                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7496                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7497                    case Gravity.LEFT:
7498                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
7499                                getCompoundPaddingRight();
7500                        final float lineWidth = mLayout.getLineWidth(0);
7501                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
7502                    case Gravity.RIGHT:
7503                        return 0.0f;
7504                    case Gravity.CENTER_HORIZONTAL:
7505                    case Gravity.FILL_HORIZONTAL:
7506                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
7507                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
7508                                getHorizontalFadingEdgeLength();
7509                }
7510            }
7511        }
7512        return super.getRightFadingEdgeStrength();
7513    }
7514
7515    @Override
7516    protected int computeHorizontalScrollRange() {
7517        if (mLayout != null) {
7518            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
7519                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
7520        }
7521
7522        return super.computeHorizontalScrollRange();
7523    }
7524
7525    @Override
7526    protected int computeVerticalScrollRange() {
7527        if (mLayout != null)
7528            return mLayout.getHeight();
7529
7530        return super.computeVerticalScrollRange();
7531    }
7532
7533    @Override
7534    protected int computeVerticalScrollExtent() {
7535        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
7536    }
7537
7538    @Override
7539    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
7540        super.findViewsWithText(outViews, searched, flags);
7541        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
7542                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
7543            String searchedLowerCase = searched.toString().toLowerCase();
7544            String textLowerCase = mText.toString().toLowerCase();
7545            if (textLowerCase.contains(searchedLowerCase)) {
7546                outViews.add(this);
7547            }
7548        }
7549    }
7550
7551    public enum BufferType {
7552        NORMAL, SPANNABLE, EDITABLE,
7553    }
7554
7555    /**
7556     * Returns the TextView_textColor attribute from the
7557     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
7558     * from the TextView_textAppearance attribute, if TextView_textColor
7559     * was not set directly.
7560     */
7561    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
7562        ColorStateList colors;
7563        colors = attrs.getColorStateList(com.android.internal.R.styleable.
7564                                         TextView_textColor);
7565
7566        if (colors == null) {
7567            int ap = attrs.getResourceId(com.android.internal.R.styleable.
7568                                         TextView_textAppearance, -1);
7569            if (ap != -1) {
7570                TypedArray appearance;
7571                appearance = context.obtainStyledAttributes(ap,
7572                                            com.android.internal.R.styleable.TextAppearance);
7573                colors = appearance.getColorStateList(com.android.internal.R.styleable.
7574                                                  TextAppearance_textColor);
7575                appearance.recycle();
7576            }
7577        }
7578
7579        return colors;
7580    }
7581
7582    /**
7583     * Returns the default color from the TextView_textColor attribute
7584     * from the AttributeSet, if set, or the default color from the
7585     * TextAppearance_textColor from the TextView_textAppearance attribute,
7586     * if TextView_textColor was not set directly.
7587     */
7588    public static int getTextColor(Context context,
7589                                   TypedArray attrs,
7590                                   int def) {
7591        ColorStateList colors = getTextColors(context, attrs);
7592
7593        if (colors == null) {
7594            return def;
7595        } else {
7596            return colors.getDefaultColor();
7597        }
7598    }
7599
7600    @Override
7601    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
7602        final int filteredMetaState = event.getMetaState() & ~KeyEvent.META_CTRL_MASK;
7603        if (KeyEvent.metaStateHasNoModifiers(filteredMetaState)) {
7604            switch (keyCode) {
7605            case KeyEvent.KEYCODE_A:
7606                if (canSelectText()) {
7607                    return onTextContextMenuItem(ID_SELECT_ALL);
7608                }
7609                break;
7610            case KeyEvent.KEYCODE_X:
7611                if (canCut()) {
7612                    return onTextContextMenuItem(ID_CUT);
7613                }
7614                break;
7615            case KeyEvent.KEYCODE_C:
7616                if (canCopy()) {
7617                    return onTextContextMenuItem(ID_COPY);
7618                }
7619                break;
7620            case KeyEvent.KEYCODE_V:
7621                if (canPaste()) {
7622                    return onTextContextMenuItem(ID_PASTE);
7623                }
7624                break;
7625            }
7626        }
7627        return super.onKeyShortcut(keyCode, event);
7628    }
7629
7630    /**
7631     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
7632     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
7633     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
7634     * sufficient.
7635     */
7636    private boolean canSelectText() {
7637        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
7638    }
7639
7640    /**
7641     * Test based on the <i>intrinsic</i> charateristics of the TextView.
7642     * The text must be spannable and the movement method must allow for arbitary selection.
7643     *
7644     * See also {@link #canSelectText()}.
7645     */
7646    boolean textCanBeSelected() {
7647        // prepareCursorController() relies on this method.
7648        // If you change this condition, make sure prepareCursorController is called anywhere
7649        // the value of this condition might be changed.
7650        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
7651        return isTextEditable() ||
7652                (isTextSelectable() && mText instanceof Spannable && isEnabled());
7653    }
7654
7655    /**
7656     * This is a temporary method. Future versions may support multi-locale text.
7657     *
7658     * @return The locale that should be used for a word iterator and a spell checker
7659     * in this TextView, based on the current spell checker settings,
7660     * the current IME's locale, or the system default locale.
7661     * @hide
7662     */
7663    public Locale getTextServicesLocale() {
7664        Locale locale = Locale.getDefault();
7665        final TextServicesManager textServicesManager = (TextServicesManager)
7666                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
7667        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
7668        if (subtype != null) {
7669            locale = new Locale(subtype.getLocale());
7670        }
7671        return locale;
7672    }
7673
7674    void onLocaleChanged() {
7675        // Will be re-created on demand in getWordIterator with the proper new locale
7676        mEditor.mWordIterator = null;
7677    }
7678
7679    /**
7680     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
7681     * Made available to achieve a consistent behavior.
7682     * @hide
7683     */
7684    public WordIterator getWordIterator() {
7685        if (mEditor != null) {
7686            return mEditor.getWordIterator();
7687        } else {
7688            return null;
7689        }
7690    }
7691
7692    @Override
7693    public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
7694        super.onPopulateAccessibilityEvent(event);
7695
7696        final boolean isPassword = hasPasswordTransformationMethod();
7697        if (!isPassword || shouldSpeakPasswordsForAccessibility()) {
7698            final CharSequence text = getTextForAccessibility();
7699            if (!TextUtils.isEmpty(text)) {
7700                event.getText().add(text);
7701            }
7702        }
7703    }
7704
7705    /**
7706     * @return true if the user has explicitly allowed accessibility services
7707     * to speak passwords.
7708     */
7709    private boolean shouldSpeakPasswordsForAccessibility() {
7710        return (Settings.Secure.getInt(mContext.getContentResolver(),
7711                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0) == 1);
7712    }
7713
7714    @Override
7715    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
7716        super.onInitializeAccessibilityEvent(event);
7717
7718        event.setClassName(TextView.class.getName());
7719        final boolean isPassword = hasPasswordTransformationMethod();
7720        event.setPassword(isPassword);
7721
7722        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
7723            event.setFromIndex(Selection.getSelectionStart(mText));
7724            event.setToIndex(Selection.getSelectionEnd(mText));
7725            event.setItemCount(mText.length());
7726        }
7727    }
7728
7729    @Override
7730    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
7731        super.onInitializeAccessibilityNodeInfo(info);
7732
7733        info.setClassName(TextView.class.getName());
7734        final boolean isPassword = hasPasswordTransformationMethod();
7735        info.setPassword(isPassword);
7736
7737        if (!isPassword) {
7738            info.setText(getTextForAccessibility());
7739        }
7740
7741        if (TextUtils.isEmpty(getContentDescription()) && !TextUtils.isEmpty(mText)) {
7742            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
7743            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
7744            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
7745                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
7746                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
7747                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
7748                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
7749        }
7750    }
7751
7752    @Override
7753    public void sendAccessibilityEvent(int eventType) {
7754        // Do not send scroll events since first they are not interesting for
7755        // accessibility and second such events a generated too frequently.
7756        // For details see the implementation of bringTextIntoView().
7757        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
7758            return;
7759        }
7760        super.sendAccessibilityEvent(eventType);
7761    }
7762
7763    /**
7764     * Gets the text reported for accessibility purposes.
7765     *
7766     * @return The accessibility text.
7767     *
7768     * @hide
7769     */
7770    public CharSequence getTextForAccessibility() {
7771        CharSequence text = getText();
7772        if (TextUtils.isEmpty(text)) {
7773            text = getHint();
7774        }
7775        return text;
7776    }
7777
7778    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
7779            int fromIndex, int removedCount, int addedCount) {
7780        AccessibilityEvent event =
7781            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
7782        event.setFromIndex(fromIndex);
7783        event.setRemovedCount(removedCount);
7784        event.setAddedCount(addedCount);
7785        event.setBeforeText(beforeText);
7786        sendAccessibilityEventUnchecked(event);
7787    }
7788
7789    /**
7790     * Returns whether this text view is a current input method target.  The
7791     * default implementation just checks with {@link InputMethodManager}.
7792     */
7793    public boolean isInputMethodTarget() {
7794        InputMethodManager imm = InputMethodManager.peekInstance();
7795        return imm != null && imm.isActive(this);
7796    }
7797
7798    static final int ID_SELECT_ALL = android.R.id.selectAll;
7799    static final int ID_CUT = android.R.id.cut;
7800    static final int ID_COPY = android.R.id.copy;
7801    static final int ID_PASTE = android.R.id.paste;
7802
7803    /**
7804     * Called when a context menu option for the text view is selected.  Currently
7805     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
7806     * {@link android.R.id#copy} or {@link android.R.id#paste}.
7807     *
7808     * @return true if the context menu item action was performed.
7809     */
7810    public boolean onTextContextMenuItem(int id) {
7811        int min = 0;
7812        int max = mText.length();
7813
7814        if (isFocused()) {
7815            final int selStart = getSelectionStart();
7816            final int selEnd = getSelectionEnd();
7817
7818            min = Math.max(0, Math.min(selStart, selEnd));
7819            max = Math.max(0, Math.max(selStart, selEnd));
7820        }
7821
7822        switch (id) {
7823            case ID_SELECT_ALL:
7824                // This does not enter text selection mode. Text is highlighted, so that it can be
7825                // bulk edited, like selectAllOnFocus does. Returns true even if text is empty.
7826                selectAllText();
7827                return true;
7828
7829            case ID_PASTE:
7830                paste(min, max);
7831                return true;
7832
7833            case ID_CUT:
7834                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
7835                deleteText_internal(min, max);
7836                stopSelectionActionMode();
7837                return true;
7838
7839            case ID_COPY:
7840                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
7841                stopSelectionActionMode();
7842                return true;
7843        }
7844        return false;
7845    }
7846
7847    CharSequence getTransformedText(int start, int end) {
7848        return removeSuggestionSpans(mTransformed.subSequence(start, end));
7849    }
7850
7851    @Override
7852    public boolean performLongClick() {
7853        boolean handled = false;
7854
7855        if (super.performLongClick()) {
7856            handled = true;
7857        }
7858
7859        if (mEditor != null) {
7860            handled |= mEditor.performLongClick(handled);
7861        }
7862
7863        if (handled) {
7864            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
7865            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
7866        }
7867
7868        return handled;
7869    }
7870
7871    @Override
7872    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
7873        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
7874        if (mEditor != null) {
7875            mEditor.onScrollChanged();
7876        }
7877    }
7878
7879    /**
7880     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
7881     * by the IME or by the spell checker as the user types. This is done by adding
7882     * {@link SuggestionSpan}s to the text.
7883     *
7884     * When suggestions are enabled (default), this list of suggestions will be displayed when the
7885     * user asks for them on these parts of the text. This value depends on the inputType of this
7886     * TextView.
7887     *
7888     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
7889     *
7890     * In addition, the type variation must be one of
7891     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
7892     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
7893     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
7894     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
7895     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
7896     *
7897     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
7898     *
7899     * @return true if the suggestions popup window is enabled, based on the inputType.
7900     */
7901    public boolean isSuggestionsEnabled() {
7902        if (mEditor == null) return false;
7903        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
7904            return false;
7905        }
7906        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
7907
7908        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
7909        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
7910                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
7911                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
7912                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
7913                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
7914    }
7915
7916    /**
7917     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
7918     * selection is initiated in this View.
7919     *
7920     * The standard implementation populates the menu with a subset of Select All, Cut, Copy and
7921     * Paste actions, depending on what this View supports.
7922     *
7923     * A custom implementation can add new entries in the default menu in its
7924     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The
7925     * default actions can also be removed from the menu using {@link Menu#removeItem(int)} and
7926     * passing {@link android.R.id#selectAll}, {@link android.R.id#cut}, {@link android.R.id#copy}
7927     * or {@link android.R.id#paste} ids as parameters.
7928     *
7929     * Returning false from
7930     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will prevent
7931     * the action mode from being started.
7932     *
7933     * Action click events should be handled by the custom implementation of
7934     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
7935     *
7936     * Note that text selection mode is not started when a TextView receives focus and the
7937     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
7938     * that case, to allow for quick replacement.
7939     */
7940    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
7941        createEditorIfNeeded();
7942        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
7943    }
7944
7945    /**
7946     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
7947     *
7948     * @return The current custom selection callback.
7949     */
7950    public ActionMode.Callback getCustomSelectionActionModeCallback() {
7951        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
7952    }
7953
7954    /**
7955     * @hide
7956     */
7957    protected void stopSelectionActionMode() {
7958        mEditor.stopSelectionActionMode();
7959    }
7960
7961    boolean canCut() {
7962        if (hasPasswordTransformationMethod()) {
7963            return false;
7964        }
7965
7966        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
7967                mEditor.mKeyListener != null) {
7968            return true;
7969        }
7970
7971        return false;
7972    }
7973
7974    boolean canCopy() {
7975        if (hasPasswordTransformationMethod()) {
7976            return false;
7977        }
7978
7979        if (mText.length() > 0 && hasSelection()) {
7980            return true;
7981        }
7982
7983        return false;
7984    }
7985
7986    boolean canPaste() {
7987        return (mText instanceof Editable &&
7988                mEditor != null && mEditor.mKeyListener != null &&
7989                getSelectionStart() >= 0 &&
7990                getSelectionEnd() >= 0 &&
7991                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
7992                hasPrimaryClip());
7993    }
7994
7995    boolean selectAllText() {
7996        final int length = mText.length();
7997        Selection.setSelection((Spannable) mText, 0, length);
7998        return length > 0;
7999    }
8000
8001    /**
8002     * Prepare text so that there are not zero or two spaces at beginning and end of region defined
8003     * by [min, max] when replacing this region by paste.
8004     * Note that if there were two spaces (or more) at that position before, they are kept. We just
8005     * make sure we do not add an extra one from the paste content.
8006     */
8007    long prepareSpacesAroundPaste(int min, int max, CharSequence paste) {
8008        if (paste.length() > 0) {
8009            if (min > 0) {
8010                final char charBefore = mTransformed.charAt(min - 1);
8011                final char charAfter = paste.charAt(0);
8012
8013                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8014                    // Two spaces at beginning of paste: remove one
8015                    final int originalLength = mText.length();
8016                    deleteText_internal(min - 1, min);
8017                    // Due to filters, there is no guarantee that exactly one character was
8018                    // removed: count instead.
8019                    final int delta = mText.length() - originalLength;
8020                    min += delta;
8021                    max += delta;
8022                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8023                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8024                    // No space at beginning of paste: add one
8025                    final int originalLength = mText.length();
8026                    replaceText_internal(min, min, " ");
8027                    // Taking possible filters into account as above.
8028                    final int delta = mText.length() - originalLength;
8029                    min += delta;
8030                    max += delta;
8031                }
8032            }
8033
8034            if (max < mText.length()) {
8035                final char charBefore = paste.charAt(paste.length() - 1);
8036                final char charAfter = mTransformed.charAt(max);
8037
8038                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8039                    // Two spaces at end of paste: remove one
8040                    deleteText_internal(max, max + 1);
8041                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8042                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8043                    // No space at end of paste: add one
8044                    replaceText_internal(max, max, " ");
8045                }
8046            }
8047        }
8048
8049        return TextUtils.packRangeInLong(min, max);
8050    }
8051
8052    /**
8053     * Paste clipboard content between min and max positions.
8054     */
8055    private void paste(int min, int max) {
8056        ClipboardManager clipboard =
8057            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
8058        ClipData clip = clipboard.getPrimaryClip();
8059        if (clip != null) {
8060            boolean didFirst = false;
8061            for (int i=0; i<clip.getItemCount(); i++) {
8062                CharSequence paste = clip.getItemAt(i).coerceToStyledText(getContext());
8063                if (paste != null) {
8064                    if (!didFirst) {
8065                        long minMax = prepareSpacesAroundPaste(min, max, paste);
8066                        min = TextUtils.unpackRangeStartFromLong(minMax);
8067                        max = TextUtils.unpackRangeEndFromLong(minMax);
8068                        Selection.setSelection((Spannable) mText, max);
8069                        ((Editable) mText).replace(min, max, paste);
8070                        didFirst = true;
8071                    } else {
8072                        ((Editable) mText).insert(getSelectionEnd(), "\n");
8073                        ((Editable) mText).insert(getSelectionEnd(), paste);
8074                    }
8075                }
8076            }
8077            stopSelectionActionMode();
8078            LAST_CUT_OR_COPY_TIME = 0;
8079        }
8080    }
8081
8082    private void setPrimaryClip(ClipData clip) {
8083        ClipboardManager clipboard = (ClipboardManager) getContext().
8084                getSystemService(Context.CLIPBOARD_SERVICE);
8085        clipboard.setPrimaryClip(clip);
8086        LAST_CUT_OR_COPY_TIME = SystemClock.uptimeMillis();
8087    }
8088
8089    /**
8090     * Get the character offset closest to the specified absolute position. A typical use case is to
8091     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
8092     *
8093     * @param x The horizontal absolute position of a point on screen
8094     * @param y The vertical absolute position of a point on screen
8095     * @return the character offset for the character whose position is closest to the specified
8096     *  position. Returns -1 if there is no layout.
8097     */
8098    public int getOffsetForPosition(float x, float y) {
8099        if (getLayout() == null) return -1;
8100        final int line = getLineAtCoordinate(y);
8101        final int offset = getOffsetAtCoordinate(line, x);
8102        return offset;
8103    }
8104
8105    float convertToLocalHorizontalCoordinate(float x) {
8106        x -= getTotalPaddingLeft();
8107        // Clamp the position to inside of the view.
8108        x = Math.max(0.0f, x);
8109        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
8110        x += getScrollX();
8111        return x;
8112    }
8113
8114    int getLineAtCoordinate(float y) {
8115        y -= getTotalPaddingTop();
8116        // Clamp the position to inside of the view.
8117        y = Math.max(0.0f, y);
8118        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
8119        y += getScrollY();
8120        return getLayout().getLineForVertical((int) y);
8121    }
8122
8123    private int getOffsetAtCoordinate(int line, float x) {
8124        x = convertToLocalHorizontalCoordinate(x);
8125        return getLayout().getOffsetForHorizontal(line, x);
8126    }
8127
8128    @Override
8129    public boolean onDragEvent(DragEvent event) {
8130        switch (event.getAction()) {
8131            case DragEvent.ACTION_DRAG_STARTED:
8132                return mEditor != null && mEditor.hasInsertionController();
8133
8134            case DragEvent.ACTION_DRAG_ENTERED:
8135                TextView.this.requestFocus();
8136                return true;
8137
8138            case DragEvent.ACTION_DRAG_LOCATION:
8139                final int offset = getOffsetForPosition(event.getX(), event.getY());
8140                Selection.setSelection((Spannable)mText, offset);
8141                return true;
8142
8143            case DragEvent.ACTION_DROP:
8144                if (mEditor != null) mEditor.onDrop(event);
8145                return true;
8146
8147            case DragEvent.ACTION_DRAG_ENDED:
8148            case DragEvent.ACTION_DRAG_EXITED:
8149            default:
8150                return true;
8151        }
8152    }
8153
8154    boolean isInBatchEditMode() {
8155        if (mEditor == null) return false;
8156        final Editor.InputMethodState ims = mEditor.mInputMethodState;
8157        if (ims != null) {
8158            return ims.mBatchEditNesting > 0;
8159        }
8160        return mEditor.mInBatchEditControllers;
8161    }
8162
8163    @Override
8164    public void onResolvedTextDirectionChanged() {
8165        if (hasPasswordTransformationMethod()) {
8166            // TODO: take care of the content direction to show the password text and dots justified
8167            // to the left or to the right
8168            mTextDir = TextDirectionHeuristics.LOCALE;
8169            return;
8170        }
8171
8172        // Always need to resolve layout direction first
8173        final boolean defaultIsRtl = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL);
8174
8175        // Now, we can select the heuristic
8176        int textDir = getResolvedTextDirection();
8177        switch (textDir) {
8178            default:
8179            case TEXT_DIRECTION_FIRST_STRONG:
8180                mTextDir = (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
8181                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
8182                break;
8183            case TEXT_DIRECTION_ANY_RTL:
8184                mTextDir = TextDirectionHeuristics.ANYRTL_LTR;
8185                break;
8186            case TEXT_DIRECTION_LTR:
8187                mTextDir = TextDirectionHeuristics.LTR;
8188                break;
8189            case TEXT_DIRECTION_RTL:
8190                mTextDir = TextDirectionHeuristics.RTL;
8191                break;
8192            case TEXT_DIRECTION_LOCALE:
8193                mTextDir = TextDirectionHeuristics.LOCALE;
8194                break;
8195        }
8196    }
8197
8198    /**
8199     * Subclasses will need to override this method to implement their own way of resolving
8200     * drawables depending on the layout direction.
8201     *
8202     * A call to the super method will be required from the subclasses implementation.
8203     */
8204    protected void resolveDrawables() {
8205        // No need to resolve twice
8206        if (mResolvedDrawables) {
8207            return;
8208        }
8209        // No drawable to resolve
8210        if (mDrawables == null) {
8211            return;
8212        }
8213        // No relative drawable to resolve
8214        if (mDrawables.mDrawableStart == null && mDrawables.mDrawableEnd == null) {
8215            mResolvedDrawables = true;
8216            return;
8217        }
8218
8219        Drawables dr = mDrawables;
8220        switch(getResolvedLayoutDirection()) {
8221            case LAYOUT_DIRECTION_RTL:
8222                if (dr.mDrawableStart != null) {
8223                    dr.mDrawableRight = dr.mDrawableStart;
8224
8225                    dr.mDrawableSizeRight = dr.mDrawableSizeStart;
8226                    dr.mDrawableHeightRight = dr.mDrawableHeightStart;
8227                }
8228                if (dr.mDrawableEnd != null) {
8229                    dr.mDrawableLeft = dr.mDrawableEnd;
8230
8231                    dr.mDrawableSizeLeft = dr.mDrawableSizeEnd;
8232                    dr.mDrawableHeightLeft = dr.mDrawableHeightEnd;
8233                }
8234                break;
8235
8236            case LAYOUT_DIRECTION_LTR:
8237            default:
8238                if (dr.mDrawableStart != null) {
8239                    dr.mDrawableLeft = dr.mDrawableStart;
8240
8241                    dr.mDrawableSizeLeft = dr.mDrawableSizeStart;
8242                    dr.mDrawableHeightLeft = dr.mDrawableHeightStart;
8243                }
8244                if (dr.mDrawableEnd != null) {
8245                    dr.mDrawableRight = dr.mDrawableEnd;
8246
8247                    dr.mDrawableSizeRight = dr.mDrawableSizeEnd;
8248                    dr.mDrawableHeightRight = dr.mDrawableHeightEnd;
8249                }
8250                break;
8251        }
8252        mResolvedDrawables = true;
8253    }
8254
8255    protected void resetResolvedDrawables() {
8256        mResolvedDrawables = false;
8257    }
8258
8259    /**
8260     * @hide
8261     */
8262    protected void viewClicked(InputMethodManager imm) {
8263        if (imm != null) {
8264            imm.viewClicked(this);
8265        }
8266    }
8267
8268    /**
8269     * Deletes the range of text [start, end[.
8270     * @hide
8271     */
8272    protected void deleteText_internal(int start, int end) {
8273        ((Editable) mText).delete(start, end);
8274    }
8275
8276    /**
8277     * Replaces the range of text [start, end[ by replacement text
8278     * @hide
8279     */
8280    protected void replaceText_internal(int start, int end, CharSequence text) {
8281        ((Editable) mText).replace(start, end, text);
8282    }
8283
8284    /**
8285     * Sets a span on the specified range of text
8286     * @hide
8287     */
8288    protected void setSpan_internal(Object span, int start, int end, int flags) {
8289        ((Editable) mText).setSpan(span, start, end, flags);
8290    }
8291
8292    /**
8293     * Moves the cursor to the specified offset position in text
8294     * @hide
8295     */
8296    protected void setCursorPosition_internal(int start, int end) {
8297        Selection.setSelection(((Editable) mText), start, end);
8298    }
8299
8300    /**
8301     * An Editor should be created as soon as any of the editable-specific fields (grouped
8302     * inside the Editor object) is assigned to a non-default value.
8303     * This method will create the Editor if needed.
8304     *
8305     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
8306     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
8307     * Editor for backward compatibility, as soon as one of these fields is assigned.
8308     *
8309     * Also note that for performance reasons, the mEditor is created when needed, but not
8310     * reset when no more edit-specific fields are needed.
8311     */
8312    private void createEditorIfNeeded() {
8313        if (mEditor == null) {
8314            mEditor = new Editor(this);
8315        }
8316    }
8317
8318    /**
8319     * @hide
8320     */
8321    @Override
8322    public CharSequence getIterableTextForAccessibility() {
8323        if (getContentDescription() == null) {
8324            if (!(mText instanceof Spannable)) {
8325                setText(mText, BufferType.SPANNABLE);
8326            }
8327            return mText;
8328        }
8329        return super.getIterableTextForAccessibility();
8330    }
8331
8332    /**
8333     * @hide
8334     */
8335    @Override
8336    public TextSegmentIterator getIteratorForGranularity(int granularity) {
8337        switch (granularity) {
8338            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
8339                Spannable text = (Spannable) getIterableTextForAccessibility();
8340                if (!TextUtils.isEmpty(text) && getLayout() != null) {
8341                    AccessibilityIterators.LineTextSegmentIterator iterator =
8342                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
8343                    iterator.initialize(text, getLayout());
8344                    return iterator;
8345                }
8346            } break;
8347            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
8348                Spannable text = (Spannable) getIterableTextForAccessibility();
8349                if (!TextUtils.isEmpty(text) && getLayout() != null) {
8350                    AccessibilityIterators.PageTextSegmentIterator iterator =
8351                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
8352                    iterator.initialize(this);
8353                    return iterator;
8354                }
8355            } break;
8356        }
8357        return super.getIteratorForGranularity(granularity);
8358    }
8359
8360    /**
8361     * @hide
8362     */
8363    @Override
8364    public int getAccessibilityCursorPosition() {
8365        if (TextUtils.isEmpty(getContentDescription())) {
8366            return getSelectionEnd();
8367        } else {
8368            return super.getAccessibilityCursorPosition();
8369        }
8370    }
8371
8372    /**
8373     * @hide
8374     */
8375    @Override
8376    public void setAccessibilityCursorPosition(int index) {
8377        if (getAccessibilityCursorPosition() == index) {
8378            return;
8379        }
8380        if (TextUtils.isEmpty(getContentDescription())) {
8381            if (index >= 0) {
8382                Selection.setSelection((Spannable) mText, index);
8383            } else {
8384                Selection.removeSelection((Spannable) mText);
8385            }
8386        } else {
8387            super.setAccessibilityCursorPosition(index);
8388        }
8389    }
8390
8391    /**
8392     * User interface state that is stored by TextView for implementing
8393     * {@link View#onSaveInstanceState}.
8394     */
8395    public static class SavedState extends BaseSavedState {
8396        int selStart;
8397        int selEnd;
8398        CharSequence text;
8399        boolean frozenWithFocus;
8400        CharSequence error;
8401
8402        SavedState(Parcelable superState) {
8403            super(superState);
8404        }
8405
8406        @Override
8407        public void writeToParcel(Parcel out, int flags) {
8408            super.writeToParcel(out, flags);
8409            out.writeInt(selStart);
8410            out.writeInt(selEnd);
8411            out.writeInt(frozenWithFocus ? 1 : 0);
8412            TextUtils.writeToParcel(text, out, flags);
8413
8414            if (error == null) {
8415                out.writeInt(0);
8416            } else {
8417                out.writeInt(1);
8418                TextUtils.writeToParcel(error, out, flags);
8419            }
8420        }
8421
8422        @Override
8423        public String toString() {
8424            String str = "TextView.SavedState{"
8425                    + Integer.toHexString(System.identityHashCode(this))
8426                    + " start=" + selStart + " end=" + selEnd;
8427            if (text != null) {
8428                str += " text=" + text;
8429            }
8430            return str + "}";
8431        }
8432
8433        @SuppressWarnings("hiding")
8434        public static final Parcelable.Creator<SavedState> CREATOR
8435                = new Parcelable.Creator<SavedState>() {
8436            public SavedState createFromParcel(Parcel in) {
8437                return new SavedState(in);
8438            }
8439
8440            public SavedState[] newArray(int size) {
8441                return new SavedState[size];
8442            }
8443        };
8444
8445        private SavedState(Parcel in) {
8446            super(in);
8447            selStart = in.readInt();
8448            selEnd = in.readInt();
8449            frozenWithFocus = (in.readInt() != 0);
8450            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8451
8452            if (in.readInt() != 0) {
8453                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8454            }
8455        }
8456    }
8457
8458    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
8459        private char[] mChars;
8460        private int mStart, mLength;
8461
8462        public CharWrapper(char[] chars, int start, int len) {
8463            mChars = chars;
8464            mStart = start;
8465            mLength = len;
8466        }
8467
8468        /* package */ void set(char[] chars, int start, int len) {
8469            mChars = chars;
8470            mStart = start;
8471            mLength = len;
8472        }
8473
8474        public int length() {
8475            return mLength;
8476        }
8477
8478        public char charAt(int off) {
8479            return mChars[off + mStart];
8480        }
8481
8482        @Override
8483        public String toString() {
8484            return new String(mChars, mStart, mLength);
8485        }
8486
8487        public CharSequence subSequence(int start, int end) {
8488            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8489                throw new IndexOutOfBoundsException(start + ", " + end);
8490            }
8491
8492            return new String(mChars, start + mStart, end - start);
8493        }
8494
8495        public void getChars(int start, int end, char[] buf, int off) {
8496            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8497                throw new IndexOutOfBoundsException(start + ", " + end);
8498            }
8499
8500            System.arraycopy(mChars, start + mStart, buf, off, end - start);
8501        }
8502
8503        public void drawText(Canvas c, int start, int end,
8504                             float x, float y, Paint p) {
8505            c.drawText(mChars, start + mStart, end - start, x, y, p);
8506        }
8507
8508        public void drawTextRun(Canvas c, int start, int end,
8509                int contextStart, int contextEnd, float x, float y, int flags, Paint p) {
8510            int count = end - start;
8511            int contextCount = contextEnd - contextStart;
8512            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
8513                    contextCount, x, y, flags, p);
8514        }
8515
8516        public float measureText(int start, int end, Paint p) {
8517            return p.measureText(mChars, start + mStart, end - start);
8518        }
8519
8520        public int getTextWidths(int start, int end, float[] widths, Paint p) {
8521            return p.getTextWidths(mChars, start + mStart, end - start, widths);
8522        }
8523
8524        public float getTextRunAdvances(int start, int end, int contextStart,
8525                int contextEnd, int flags, float[] advances, int advancesIndex,
8526                Paint p) {
8527            int count = end - start;
8528            int contextCount = contextEnd - contextStart;
8529            return p.getTextRunAdvances(mChars, start + mStart, count,
8530                    contextStart + mStart, contextCount, flags, advances,
8531                    advancesIndex);
8532        }
8533
8534        public float getTextRunAdvances(int start, int end, int contextStart,
8535                int contextEnd, int flags, float[] advances, int advancesIndex,
8536                Paint p, int reserved) {
8537            int count = end - start;
8538            int contextCount = contextEnd - contextStart;
8539            return p.getTextRunAdvances(mChars, start + mStart, count,
8540                    contextStart + mStart, contextCount, flags, advances,
8541                    advancesIndex, reserved);
8542        }
8543
8544        public int getTextRunCursor(int contextStart, int contextEnd, int flags,
8545                int offset, int cursorOpt, Paint p) {
8546            int contextCount = contextEnd - contextStart;
8547            return p.getTextRunCursor(mChars, contextStart + mStart,
8548                    contextCount, flags, offset + mStart, cursorOpt);
8549        }
8550    }
8551
8552    private static final class Marquee extends Handler {
8553        // TODO: Add an option to configure this
8554        private static final float MARQUEE_DELTA_MAX = 0.07f;
8555        private static final int MARQUEE_DELAY = 1200;
8556        private static final int MARQUEE_RESTART_DELAY = 1200;
8557        private static final int MARQUEE_RESOLUTION = 1000 / 30;
8558        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
8559
8560        private static final byte MARQUEE_STOPPED = 0x0;
8561        private static final byte MARQUEE_STARTING = 0x1;
8562        private static final byte MARQUEE_RUNNING = 0x2;
8563
8564        private static final int MESSAGE_START = 0x1;
8565        private static final int MESSAGE_TICK = 0x2;
8566        private static final int MESSAGE_RESTART = 0x3;
8567
8568        private final WeakReference<TextView> mView;
8569
8570        private byte mStatus = MARQUEE_STOPPED;
8571        private final float mScrollUnit;
8572        private float mMaxScroll;
8573        float mMaxFadeScroll;
8574        private float mGhostStart;
8575        private float mGhostOffset;
8576        private float mFadeStop;
8577        private int mRepeatLimit;
8578
8579        float mScroll;
8580
8581        Marquee(TextView v) {
8582            final float density = v.getContext().getResources().getDisplayMetrics().density;
8583            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / MARQUEE_RESOLUTION;
8584            mView = new WeakReference<TextView>(v);
8585        }
8586
8587        @Override
8588        public void handleMessage(Message msg) {
8589            switch (msg.what) {
8590                case MESSAGE_START:
8591                    mStatus = MARQUEE_RUNNING;
8592                    tick();
8593                    break;
8594                case MESSAGE_TICK:
8595                    tick();
8596                    break;
8597                case MESSAGE_RESTART:
8598                    if (mStatus == MARQUEE_RUNNING) {
8599                        if (mRepeatLimit >= 0) {
8600                            mRepeatLimit--;
8601                        }
8602                        start(mRepeatLimit);
8603                    }
8604                    break;
8605            }
8606        }
8607
8608        void tick() {
8609            if (mStatus != MARQUEE_RUNNING) {
8610                return;
8611            }
8612
8613            removeMessages(MESSAGE_TICK);
8614
8615            final TextView textView = mView.get();
8616            if (textView != null && (textView.isFocused() || textView.isSelected())) {
8617                mScroll += mScrollUnit;
8618                if (mScroll > mMaxScroll) {
8619                    mScroll = mMaxScroll;
8620                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
8621                } else {
8622                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
8623                }
8624                textView.invalidate();
8625            }
8626        }
8627
8628        void stop() {
8629            mStatus = MARQUEE_STOPPED;
8630            removeMessages(MESSAGE_START);
8631            removeMessages(MESSAGE_RESTART);
8632            removeMessages(MESSAGE_TICK);
8633            resetScroll();
8634        }
8635
8636        private void resetScroll() {
8637            mScroll = 0.0f;
8638            final TextView textView = mView.get();
8639            if (textView != null) textView.invalidate();
8640        }
8641
8642        void start(int repeatLimit) {
8643            if (repeatLimit == 0) {
8644                stop();
8645                return;
8646            }
8647            mRepeatLimit = repeatLimit;
8648            final TextView textView = mView.get();
8649            if (textView != null && textView.mLayout != null) {
8650                mStatus = MARQUEE_STARTING;
8651                mScroll = 0.0f;
8652                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
8653                        textView.getCompoundPaddingRight();
8654                final float lineWidth = textView.mLayout.getLineWidth(0);
8655                final float gap = textWidth / 3.0f;
8656                mGhostStart = lineWidth - textWidth + gap;
8657                mMaxScroll = mGhostStart + textWidth;
8658                mGhostOffset = lineWidth + gap;
8659                mFadeStop = lineWidth + textWidth / 6.0f;
8660                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
8661
8662                textView.invalidate();
8663                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
8664            }
8665        }
8666
8667        float getGhostOffset() {
8668            return mGhostOffset;
8669        }
8670
8671        boolean shouldDrawLeftFade() {
8672            return mScroll <= mFadeStop;
8673        }
8674
8675        boolean shouldDrawGhost() {
8676            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
8677        }
8678
8679        boolean isRunning() {
8680            return mStatus == MARQUEE_RUNNING;
8681        }
8682
8683        boolean isStopped() {
8684            return mStatus == MARQUEE_STOPPED;
8685        }
8686    }
8687
8688    private class ChangeWatcher implements TextWatcher, SpanWatcher {
8689
8690        private CharSequence mBeforeText;
8691
8692        public void beforeTextChanged(CharSequence buffer, int start,
8693                                      int before, int after) {
8694            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
8695                    + " before=" + before + " after=" + after + ": " + buffer);
8696
8697            if (AccessibilityManager.getInstance(mContext).isEnabled()
8698                    && !isPasswordInputType(getInputType())
8699                    && !hasPasswordTransformationMethod()) {
8700                mBeforeText = buffer.toString();
8701            }
8702
8703            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
8704        }
8705
8706        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
8707            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
8708                    + " before=" + before + " after=" + after + ": " + buffer);
8709            TextView.this.handleTextChanged(buffer, start, before, after);
8710
8711            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
8712                    (isFocused() || isSelected() && isShown())) {
8713                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
8714                mBeforeText = null;
8715            }
8716        }
8717
8718        public void afterTextChanged(Editable buffer) {
8719            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
8720            TextView.this.sendAfterTextChanged(buffer);
8721
8722            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
8723                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
8724            }
8725        }
8726
8727        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
8728            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
8729                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
8730            TextView.this.spanChange(buf, what, s, st, e, en);
8731        }
8732
8733        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
8734            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
8735                    + " what=" + what + ": " + buf);
8736            TextView.this.spanChange(buf, what, -1, s, -1, e);
8737        }
8738
8739        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
8740            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
8741                    + " what=" + what + ": " + buf);
8742            TextView.this.spanChange(buf, what, s, -1, e, -1);
8743        }
8744    }
8745}
8746