TextView.java revision 97e146cf02f87b91f81c37d53644e5415efddb72 
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.widget;
18
19import android.R;
20import android.content.ClipData;
21import android.content.ClipboardManager;
22import android.content.Context;
23import android.content.res.ColorStateList;
24import android.content.res.CompatibilityInfo;
25import android.content.res.Resources;
26import android.content.res.TypedArray;
27import android.content.res.XmlResourceParser;
28import android.graphics.Canvas;
29import android.graphics.Paint;
30import android.graphics.Path;
31import android.graphics.Rect;
32import android.graphics.RectF;
33import android.graphics.Typeface;
34import android.graphics.drawable.Drawable;
35import android.inputmethodservice.ExtractEditText;
36import android.os.Bundle;
37import android.os.Handler;
38import android.os.Message;
39import android.os.Parcel;
40import android.os.Parcelable;
41import android.os.SystemClock;
42import android.provider.Settings;
43import android.text.BoringLayout;
44import android.text.DynamicLayout;
45import android.text.Editable;
46import android.text.GetChars;
47import android.text.GraphicsOperations;
48import android.text.InputFilter;
49import android.text.InputType;
50import android.text.Layout;
51import android.text.ParcelableSpan;
52import android.text.Selection;
53import android.text.SpanWatcher;
54import android.text.Spannable;
55import android.text.SpannableString;
56import android.text.Spanned;
57import android.text.SpannedString;
58import android.text.StaticLayout;
59import android.text.TextDirectionHeuristic;
60import android.text.TextDirectionHeuristics;
61import android.text.TextPaint;
62import android.text.TextUtils;
63import android.text.TextUtils.TruncateAt;
64import android.text.TextWatcher;
65import android.text.method.AllCapsTransformationMethod;
66import android.text.method.ArrowKeyMovementMethod;
67import android.text.method.DateKeyListener;
68import android.text.method.DateTimeKeyListener;
69import android.text.method.DialerKeyListener;
70import android.text.method.DigitsKeyListener;
71import android.text.method.KeyListener;
72import android.text.method.LinkMovementMethod;
73import android.text.method.MetaKeyKeyListener;
74import android.text.method.MovementMethod;
75import android.text.method.PasswordTransformationMethod;
76import android.text.method.SingleLineTransformationMethod;
77import android.text.method.TextKeyListener;
78import android.text.method.TimeKeyListener;
79import android.text.method.TransformationMethod;
80import android.text.method.TransformationMethod2;
81import android.text.method.WordIterator;
82import android.text.style.CharacterStyle;
83import android.text.style.ClickableSpan;
84import android.text.style.ParagraphStyle;
85import android.text.style.SpellCheckSpan;
86import android.text.style.SuggestionSpan;
87import android.text.style.URLSpan;
88import android.text.style.UpdateAppearance;
89import android.text.util.Linkify;
90import android.util.AttributeSet;
91import android.util.FloatMath;
92import android.util.Log;
93import android.util.TypedValue;
94import android.view.AccessibilityIterators.TextSegmentIterator;
95import android.view.ActionMode;
96import android.view.DragEvent;
97import android.view.Gravity;
98import android.view.HapticFeedbackConstants;
99import android.view.KeyCharacterMap;
100import android.view.KeyEvent;
101import android.view.Menu;
102import android.view.MenuItem;
103import android.view.MotionEvent;
104import android.view.View;
105import android.view.ViewConfiguration;
106import android.view.ViewDebug;
107import android.view.ViewGroup.LayoutParams;
108import android.view.ViewRootImpl;
109import android.view.ViewTreeObserver;
110import android.view.accessibility.AccessibilityEvent;
111import android.view.accessibility.AccessibilityManager;
112import android.view.accessibility.AccessibilityNodeInfo;
113import android.view.animation.AnimationUtils;
114import android.view.inputmethod.BaseInputConnection;
115import android.view.inputmethod.CompletionInfo;
116import android.view.inputmethod.CorrectionInfo;
117import android.view.inputmethod.EditorInfo;
118import android.view.inputmethod.ExtractedText;
119import android.view.inputmethod.ExtractedTextRequest;
120import android.view.inputmethod.InputConnection;
121import android.view.inputmethod.InputMethodManager;
122import android.view.textservice.SpellCheckerSubtype;
123import android.view.textservice.TextServicesManager;
124import android.widget.RemoteViews.RemoteView;
125
126import com.android.internal.util.FastMath;
127import com.android.internal.widget.EditableInputConnection;
128
129import org.xmlpull.v1.XmlPullParserException;
130
131import java.io.IOException;
132import java.lang.ref.WeakReference;
133import java.util.ArrayList;
134import java.util.Locale;
135
136/**
137 * Displays text to the user and optionally allows them to edit it.  A TextView
138 * is a complete text editor, however the basic class is configured to not
139 * allow editing; see {@link EditText} for a subclass that configures the text
140 * view for editing.
141 *
142 * <p>
143 * <b>XML attributes</b>
144 * <p>
145 * See {@link android.R.styleable#TextView TextView Attributes},
146 * {@link android.R.styleable#View View Attributes}
147 *
148 * @attr ref android.R.styleable#TextView_text
149 * @attr ref android.R.styleable#TextView_bufferType
150 * @attr ref android.R.styleable#TextView_hint
151 * @attr ref android.R.styleable#TextView_textColor
152 * @attr ref android.R.styleable#TextView_textColorHighlight
153 * @attr ref android.R.styleable#TextView_textColorHint
154 * @attr ref android.R.styleable#TextView_textAppearance
155 * @attr ref android.R.styleable#TextView_textColorLink
156 * @attr ref android.R.styleable#TextView_textSize
157 * @attr ref android.R.styleable#TextView_textScaleX
158 * @attr ref android.R.styleable#TextView_fontFamily
159 * @attr ref android.R.styleable#TextView_typeface
160 * @attr ref android.R.styleable#TextView_textStyle
161 * @attr ref android.R.styleable#TextView_cursorVisible
162 * @attr ref android.R.styleable#TextView_maxLines
163 * @attr ref android.R.styleable#TextView_maxHeight
164 * @attr ref android.R.styleable#TextView_lines
165 * @attr ref android.R.styleable#TextView_height
166 * @attr ref android.R.styleable#TextView_minLines
167 * @attr ref android.R.styleable#TextView_minHeight
168 * @attr ref android.R.styleable#TextView_maxEms
169 * @attr ref android.R.styleable#TextView_maxWidth
170 * @attr ref android.R.styleable#TextView_ems
171 * @attr ref android.R.styleable#TextView_width
172 * @attr ref android.R.styleable#TextView_minEms
173 * @attr ref android.R.styleable#TextView_minWidth
174 * @attr ref android.R.styleable#TextView_gravity
175 * @attr ref android.R.styleable#TextView_scrollHorizontally
176 * @attr ref android.R.styleable#TextView_password
177 * @attr ref android.R.styleable#TextView_singleLine
178 * @attr ref android.R.styleable#TextView_selectAllOnFocus
179 * @attr ref android.R.styleable#TextView_includeFontPadding
180 * @attr ref android.R.styleable#TextView_maxLength
181 * @attr ref android.R.styleable#TextView_shadowColor
182 * @attr ref android.R.styleable#TextView_shadowDx
183 * @attr ref android.R.styleable#TextView_shadowDy
184 * @attr ref android.R.styleable#TextView_shadowRadius
185 * @attr ref android.R.styleable#TextView_autoLink
186 * @attr ref android.R.styleable#TextView_linksClickable
187 * @attr ref android.R.styleable#TextView_numeric
188 * @attr ref android.R.styleable#TextView_digits
189 * @attr ref android.R.styleable#TextView_phoneNumber
190 * @attr ref android.R.styleable#TextView_inputMethod
191 * @attr ref android.R.styleable#TextView_capitalize
192 * @attr ref android.R.styleable#TextView_autoText
193 * @attr ref android.R.styleable#TextView_editable
194 * @attr ref android.R.styleable#TextView_freezesText
195 * @attr ref android.R.styleable#TextView_ellipsize
196 * @attr ref android.R.styleable#TextView_drawableTop
197 * @attr ref android.R.styleable#TextView_drawableBottom
198 * @attr ref android.R.styleable#TextView_drawableRight
199 * @attr ref android.R.styleable#TextView_drawableLeft
200 * @attr ref android.R.styleable#TextView_drawableStart
201 * @attr ref android.R.styleable#TextView_drawableEnd
202 * @attr ref android.R.styleable#TextView_drawablePadding
203 * @attr ref android.R.styleable#TextView_lineSpacingExtra
204 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
205 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
206 * @attr ref android.R.styleable#TextView_inputType
207 * @attr ref android.R.styleable#TextView_imeOptions
208 * @attr ref android.R.styleable#TextView_privateImeOptions
209 * @attr ref android.R.styleable#TextView_imeActionLabel
210 * @attr ref android.R.styleable#TextView_imeActionId
211 * @attr ref android.R.styleable#TextView_editorExtras
212 */
213@RemoteView
214public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
215    static final String LOG_TAG = "TextView";
216    static final boolean DEBUG_EXTRACT = false;
217
218    // Enum for the "typeface" XML parameter.
219    // TODO: How can we get this from the XML instead of hardcoding it here?
220    private static final int SANS = 1;
221    private static final int SERIF = 2;
222    private static final int MONOSPACE = 3;
223
224    // Bitfield for the "numeric" XML parameter.
225    // TODO: How can we get this from the XML instead of hardcoding it here?
226    private static final int SIGNED = 2;
227    private static final int DECIMAL = 4;
228
229    /**
230     * Draw marquee text with fading edges as usual
231     */
232    private static final int MARQUEE_FADE_NORMAL = 0;
233
234    /**
235     * Draw marquee text as ellipsize end while inactive instead of with the fade.
236     * (Useful for devices where the fade can be expensive if overdone)
237     */
238    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
239
240    /**
241     * Draw marquee text with fading edges because it is currently active/animating.
242     */
243    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
244
245    private static final int LINES = 1;
246    private static final int EMS = LINES;
247    private static final int PIXELS = 2;
248
249    private static final RectF TEMP_RECTF = new RectF();
250
251    // XXX should be much larger
252    private static final int VERY_WIDE = 1024*1024;
253    private static final int ANIMATED_SCROLL_GAP = 250;
254
255    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
256    private static final Spanned EMPTY_SPANNED = new SpannedString("");
257
258    private static final int CHANGE_WATCHER_PRIORITY = 100;
259
260    // New state used to change background based on whether this TextView is multiline.
261    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
262
263    // System wide time for last cut or copy action.
264    static long LAST_CUT_OR_COPY_TIME;
265
266    private ColorStateList mTextColor;
267    private ColorStateList mHintTextColor;
268    private ColorStateList mLinkTextColor;
269    private int mCurTextColor;
270    private int mCurHintTextColor;
271    private boolean mFreezesText;
272    private boolean mTemporaryDetach;
273    private boolean mDispatchTemporaryDetach;
274
275    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
276    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
277
278    private float mShadowRadius, mShadowDx, mShadowDy;
279
280    private boolean mPreDrawRegistered;
281
282    private TextUtils.TruncateAt mEllipsize;
283
284    static class Drawables {
285        final Rect mCompoundRect = new Rect();
286        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight,
287                mDrawableStart, mDrawableEnd;
288        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
289                mDrawableSizeStart, mDrawableSizeEnd;
290        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
291                mDrawableHeightStart, mDrawableHeightEnd;
292        int mDrawablePadding;
293    }
294    Drawables mDrawables;
295
296    private CharWrapper mCharWrapper;
297
298    private Marquee mMarquee;
299    private boolean mRestartMarquee;
300
301    private int mMarqueeRepeatLimit = 3;
302
303    // The alignment to pass to Layout, or null if not resolved.
304    private Layout.Alignment mLayoutAlignment;
305    private int mResolvedTextAlignment;
306
307    private boolean mResolvedDrawables;
308
309    /**
310     * On some devices the fading edges add a performance penalty if used
311     * extensively in the same layout. This mode indicates how the marquee
312     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
313     */
314    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
315
316    /**
317     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
318     * the layout that should be used when the mode switches.
319     */
320    private Layout mSavedMarqueeModeLayout;
321
322    @ViewDebug.ExportedProperty(category = "text")
323    private CharSequence mText;
324    private CharSequence mTransformed;
325    private BufferType mBufferType = BufferType.NORMAL;
326
327    private CharSequence mHint;
328    private Layout mHintLayout;
329
330    private MovementMethod mMovement;
331
332    private TransformationMethod mTransformation;
333    private boolean mAllowTransformationLengthChange;
334    private ChangeWatcher mChangeWatcher;
335
336    private ArrayList<TextWatcher> mListeners;
337
338    // display attributes
339    private final TextPaint mTextPaint;
340    private boolean mUserSetTextScaleX;
341    private Layout mLayout;
342
343    private int mGravity = Gravity.TOP | Gravity.START;
344    private boolean mHorizontallyScrolling;
345
346    private int mAutoLinkMask;
347    private boolean mLinksClickable = true;
348
349    private float mSpacingMult = 1.0f;
350    private float mSpacingAdd = 0.0f;
351
352    private int mMaximum = Integer.MAX_VALUE;
353    private int mMaxMode = LINES;
354    private int mMinimum = 0;
355    private int mMinMode = LINES;
356
357    private int mOldMaximum = mMaximum;
358    private int mOldMaxMode = mMaxMode;
359
360    private int mMaxWidth = Integer.MAX_VALUE;
361    private int mMaxWidthMode = PIXELS;
362    private int mMinWidth = 0;
363    private int mMinWidthMode = PIXELS;
364
365    private boolean mSingleLine;
366    private int mDesiredHeightAtMeasure = -1;
367    private boolean mIncludePad = true;
368
369    // tmp primitives, so we don't alloc them on each draw
370    private Rect mTempRect;
371    private long mLastScroll;
372    private Scroller mScroller;
373
374    private BoringLayout.Metrics mBoring, mHintBoring;
375    private BoringLayout mSavedLayout, mSavedHintLayout;
376
377    private TextDirectionHeuristic mTextDir;
378
379    private InputFilter[] mFilters = NO_FILTERS;
380
381    // It is possible to have a selection even when mEditor is null (programmatically set, like when
382    // a link is pressed). These highlight-related fields do not go in mEditor.
383    int mHighlightColor = 0x6633B5E5;
384    private Path mHighlightPath;
385    private final Paint mHighlightPaint;
386    private boolean mHighlightPathBogus = true;
387
388    // Although these fields are specific to editable text, they are not added to Editor because
389    // they are defined by the TextView's style and are theme-dependent.
390    int mCursorDrawableRes;
391    // These four fields, could be moved to Editor, since we know their default values and we
392    // could condition the creation of the Editor to a non standard value. This is however
393    // brittle since the hardcoded values here (such as
394    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
395    // default style is modified.
396    int mTextSelectHandleLeftRes;
397    int mTextSelectHandleRightRes;
398    int mTextSelectHandleRes;
399    int mTextEditSuggestionItemLayout;
400
401    /**
402     * EditText specific data, created on demand when one of the Editor fields is used.
403     * See {@link #createEditorIfNeeded()}.
404     */
405    private Editor mEditor;
406
407    /*
408     * Kick-start the font cache for the zygote process (to pay the cost of
409     * initializing freetype for our default font only once).
410     */
411    static {
412        Paint p = new Paint();
413        p.setAntiAlias(true);
414        // We don't care about the result, just the side-effect of measuring.
415        p.measureText("H");
416    }
417
418    /**
419     * Interface definition for a callback to be invoked when an action is
420     * performed on the editor.
421     */
422    public interface OnEditorActionListener {
423        /**
424         * Called when an action is being performed.
425         *
426         * @param v The view that was clicked.
427         * @param actionId Identifier of the action.  This will be either the
428         * identifier you supplied, or {@link EditorInfo#IME_NULL
429         * EditorInfo.IME_NULL} if being called due to the enter key
430         * being pressed.
431         * @param event If triggered by an enter key, this is the event;
432         * otherwise, this is null.
433         * @return Return true if you have consumed the action, else false.
434         */
435        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
436    }
437
438    public TextView(Context context) {
439        this(context, null);
440    }
441
442    public TextView(Context context, AttributeSet attrs) {
443        this(context, attrs, com.android.internal.R.attr.textViewStyle);
444    }
445
446    @SuppressWarnings("deprecation")
447    public TextView(Context context, AttributeSet attrs, int defStyle) {
448        super(context, attrs, defStyle);
449        mText = "";
450
451        final Resources res = getResources();
452        final CompatibilityInfo compat = res.getCompatibilityInfo();
453
454        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
455        mTextPaint.density = res.getDisplayMetrics().density;
456        mTextPaint.setCompatibilityScaling(compat.applicationScale);
457
458        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
459        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
460
461        mMovement = getDefaultMovementMethod();
462
463        mTransformation = null;
464
465        int textColorHighlight = 0;
466        ColorStateList textColor = null;
467        ColorStateList textColorHint = null;
468        ColorStateList textColorLink = null;
469        int textSize = 15;
470        String fontFamily = null;
471        int typefaceIndex = -1;
472        int styleIndex = -1;
473        boolean allCaps = false;
474
475        final Resources.Theme theme = context.getTheme();
476
477        /*
478         * Look the appearance up without checking first if it exists because
479         * almost every TextView has one and it greatly simplifies the logic
480         * to be able to parse the appearance first and then let specific tags
481         * for this View override it.
482         */
483        TypedArray a = theme.obtainStyledAttributes(
484                    attrs, com.android.internal.R.styleable.TextViewAppearance, defStyle, 0);
485        TypedArray appearance = null;
486        int ap = a.getResourceId(
487                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
488        a.recycle();
489        if (ap != -1) {
490            appearance = theme.obtainStyledAttributes(
491                    ap, com.android.internal.R.styleable.TextAppearance);
492        }
493        if (appearance != null) {
494            int n = appearance.getIndexCount();
495            for (int i = 0; i < n; i++) {
496                int attr = appearance.getIndex(i);
497
498                switch (attr) {
499                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
500                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
501                    break;
502
503                case com.android.internal.R.styleable.TextAppearance_textColor:
504                    textColor = appearance.getColorStateList(attr);
505                    break;
506
507                case com.android.internal.R.styleable.TextAppearance_textColorHint:
508                    textColorHint = appearance.getColorStateList(attr);
509                    break;
510
511                case com.android.internal.R.styleable.TextAppearance_textColorLink:
512                    textColorLink = appearance.getColorStateList(attr);
513                    break;
514
515                case com.android.internal.R.styleable.TextAppearance_textSize:
516                    textSize = appearance.getDimensionPixelSize(attr, textSize);
517                    break;
518
519                case com.android.internal.R.styleable.TextAppearance_typeface:
520                    typefaceIndex = appearance.getInt(attr, -1);
521                    break;
522
523                case com.android.internal.R.styleable.TextAppearance_fontFamily:
524                    fontFamily = appearance.getString(attr);
525                    break;
526
527                case com.android.internal.R.styleable.TextAppearance_textStyle:
528                    styleIndex = appearance.getInt(attr, -1);
529                    break;
530
531                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
532                    allCaps = appearance.getBoolean(attr, false);
533                    break;
534                }
535            }
536
537            appearance.recycle();
538        }
539
540        boolean editable = getDefaultEditable();
541        CharSequence inputMethod = null;
542        int numeric = 0;
543        CharSequence digits = null;
544        boolean phone = false;
545        boolean autotext = false;
546        int autocap = -1;
547        int buffertype = 0;
548        boolean selectallonfocus = false;
549        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
550            drawableBottom = null, drawableStart = null, drawableEnd = null;
551        int drawablePadding = 0;
552        int ellipsize = -1;
553        boolean singleLine = false;
554        int maxlength = -1;
555        CharSequence text = "";
556        CharSequence hint = null;
557        int shadowcolor = 0;
558        float dx = 0, dy = 0, r = 0;
559        boolean password = false;
560        int inputType = EditorInfo.TYPE_NULL;
561
562        a = theme.obtainStyledAttributes(
563                    attrs, com.android.internal.R.styleable.TextView, defStyle, 0);
564
565        int n = a.getIndexCount();
566        for (int i = 0; i < n; i++) {
567            int attr = a.getIndex(i);
568
569            switch (attr) {
570            case com.android.internal.R.styleable.TextView_editable:
571                editable = a.getBoolean(attr, editable);
572                break;
573
574            case com.android.internal.R.styleable.TextView_inputMethod:
575                inputMethod = a.getText(attr);
576                break;
577
578            case com.android.internal.R.styleable.TextView_numeric:
579                numeric = a.getInt(attr, numeric);
580                break;
581
582            case com.android.internal.R.styleable.TextView_digits:
583                digits = a.getText(attr);
584                break;
585
586            case com.android.internal.R.styleable.TextView_phoneNumber:
587                phone = a.getBoolean(attr, phone);
588                break;
589
590            case com.android.internal.R.styleable.TextView_autoText:
591                autotext = a.getBoolean(attr, autotext);
592                break;
593
594            case com.android.internal.R.styleable.TextView_capitalize:
595                autocap = a.getInt(attr, autocap);
596                break;
597
598            case com.android.internal.R.styleable.TextView_bufferType:
599                buffertype = a.getInt(attr, buffertype);
600                break;
601
602            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
603                selectallonfocus = a.getBoolean(attr, selectallonfocus);
604                break;
605
606            case com.android.internal.R.styleable.TextView_autoLink:
607                mAutoLinkMask = a.getInt(attr, 0);
608                break;
609
610            case com.android.internal.R.styleable.TextView_linksClickable:
611                mLinksClickable = a.getBoolean(attr, true);
612                break;
613
614            case com.android.internal.R.styleable.TextView_drawableLeft:
615                drawableLeft = a.getDrawable(attr);
616                break;
617
618            case com.android.internal.R.styleable.TextView_drawableTop:
619                drawableTop = a.getDrawable(attr);
620                break;
621
622            case com.android.internal.R.styleable.TextView_drawableRight:
623                drawableRight = a.getDrawable(attr);
624                break;
625
626            case com.android.internal.R.styleable.TextView_drawableBottom:
627                drawableBottom = a.getDrawable(attr);
628                break;
629
630            case com.android.internal.R.styleable.TextView_drawableStart:
631                drawableStart = a.getDrawable(attr);
632                break;
633
634            case com.android.internal.R.styleable.TextView_drawableEnd:
635                drawableEnd = a.getDrawable(attr);
636                break;
637
638            case com.android.internal.R.styleable.TextView_drawablePadding:
639                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
640                break;
641
642            case com.android.internal.R.styleable.TextView_maxLines:
643                setMaxLines(a.getInt(attr, -1));
644                break;
645
646            case com.android.internal.R.styleable.TextView_maxHeight:
647                setMaxHeight(a.getDimensionPixelSize(attr, -1));
648                break;
649
650            case com.android.internal.R.styleable.TextView_lines:
651                setLines(a.getInt(attr, -1));
652                break;
653
654            case com.android.internal.R.styleable.TextView_height:
655                setHeight(a.getDimensionPixelSize(attr, -1));
656                break;
657
658            case com.android.internal.R.styleable.TextView_minLines:
659                setMinLines(a.getInt(attr, -1));
660                break;
661
662            case com.android.internal.R.styleable.TextView_minHeight:
663                setMinHeight(a.getDimensionPixelSize(attr, -1));
664                break;
665
666            case com.android.internal.R.styleable.TextView_maxEms:
667                setMaxEms(a.getInt(attr, -1));
668                break;
669
670            case com.android.internal.R.styleable.TextView_maxWidth:
671                setMaxWidth(a.getDimensionPixelSize(attr, -1));
672                break;
673
674            case com.android.internal.R.styleable.TextView_ems:
675                setEms(a.getInt(attr, -1));
676                break;
677
678            case com.android.internal.R.styleable.TextView_width:
679                setWidth(a.getDimensionPixelSize(attr, -1));
680                break;
681
682            case com.android.internal.R.styleable.TextView_minEms:
683                setMinEms(a.getInt(attr, -1));
684                break;
685
686            case com.android.internal.R.styleable.TextView_minWidth:
687                setMinWidth(a.getDimensionPixelSize(attr, -1));
688                break;
689
690            case com.android.internal.R.styleable.TextView_gravity:
691                setGravity(a.getInt(attr, -1));
692                break;
693
694            case com.android.internal.R.styleable.TextView_hint:
695                hint = a.getText(attr);
696                break;
697
698            case com.android.internal.R.styleable.TextView_text:
699                text = a.getText(attr);
700                break;
701
702            case com.android.internal.R.styleable.TextView_scrollHorizontally:
703                if (a.getBoolean(attr, false)) {
704                    setHorizontallyScrolling(true);
705                }
706                break;
707
708            case com.android.internal.R.styleable.TextView_singleLine:
709                singleLine = a.getBoolean(attr, singleLine);
710                break;
711
712            case com.android.internal.R.styleable.TextView_ellipsize:
713                ellipsize = a.getInt(attr, ellipsize);
714                break;
715
716            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
717                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
718                break;
719
720            case com.android.internal.R.styleable.TextView_includeFontPadding:
721                if (!a.getBoolean(attr, true)) {
722                    setIncludeFontPadding(false);
723                }
724                break;
725
726            case com.android.internal.R.styleable.TextView_cursorVisible:
727                if (!a.getBoolean(attr, true)) {
728                    setCursorVisible(false);
729                }
730                break;
731
732            case com.android.internal.R.styleable.TextView_maxLength:
733                maxlength = a.getInt(attr, -1);
734                break;
735
736            case com.android.internal.R.styleable.TextView_textScaleX:
737                setTextScaleX(a.getFloat(attr, 1.0f));
738                break;
739
740            case com.android.internal.R.styleable.TextView_freezesText:
741                mFreezesText = a.getBoolean(attr, false);
742                break;
743
744            case com.android.internal.R.styleable.TextView_shadowColor:
745                shadowcolor = a.getInt(attr, 0);
746                break;
747
748            case com.android.internal.R.styleable.TextView_shadowDx:
749                dx = a.getFloat(attr, 0);
750                break;
751
752            case com.android.internal.R.styleable.TextView_shadowDy:
753                dy = a.getFloat(attr, 0);
754                break;
755
756            case com.android.internal.R.styleable.TextView_shadowRadius:
757                r = a.getFloat(attr, 0);
758                break;
759
760            case com.android.internal.R.styleable.TextView_enabled:
761                setEnabled(a.getBoolean(attr, isEnabled()));
762                break;
763
764            case com.android.internal.R.styleable.TextView_textColorHighlight:
765                textColorHighlight = a.getColor(attr, textColorHighlight);
766                break;
767
768            case com.android.internal.R.styleable.TextView_textColor:
769                textColor = a.getColorStateList(attr);
770                break;
771
772            case com.android.internal.R.styleable.TextView_textColorHint:
773                textColorHint = a.getColorStateList(attr);
774                break;
775
776            case com.android.internal.R.styleable.TextView_textColorLink:
777                textColorLink = a.getColorStateList(attr);
778                break;
779
780            case com.android.internal.R.styleable.TextView_textSize:
781                textSize = a.getDimensionPixelSize(attr, textSize);
782                break;
783
784            case com.android.internal.R.styleable.TextView_typeface:
785                typefaceIndex = a.getInt(attr, typefaceIndex);
786                break;
787
788            case com.android.internal.R.styleable.TextView_textStyle:
789                styleIndex = a.getInt(attr, styleIndex);
790                break;
791
792            case com.android.internal.R.styleable.TextView_fontFamily:
793                fontFamily = a.getString(attr);
794                break;
795
796            case com.android.internal.R.styleable.TextView_password:
797                password = a.getBoolean(attr, password);
798                break;
799
800            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
801                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
802                break;
803
804            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
805                mSpacingMult = a.getFloat(attr, mSpacingMult);
806                break;
807
808            case com.android.internal.R.styleable.TextView_inputType:
809                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
810                break;
811
812            case com.android.internal.R.styleable.TextView_imeOptions:
813                createEditorIfNeeded();
814                mEditor.createInputContentTypeIfNeeded();
815                mEditor.mInputContentType.imeOptions = a.getInt(attr,
816                        mEditor.mInputContentType.imeOptions);
817                break;
818
819            case com.android.internal.R.styleable.TextView_imeActionLabel:
820                createEditorIfNeeded();
821                mEditor.createInputContentTypeIfNeeded();
822                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
823                break;
824
825            case com.android.internal.R.styleable.TextView_imeActionId:
826                createEditorIfNeeded();
827                mEditor.createInputContentTypeIfNeeded();
828                mEditor.mInputContentType.imeActionId = a.getInt(attr,
829                        mEditor.mInputContentType.imeActionId);
830                break;
831
832            case com.android.internal.R.styleable.TextView_privateImeOptions:
833                setPrivateImeOptions(a.getString(attr));
834                break;
835
836            case com.android.internal.R.styleable.TextView_editorExtras:
837                try {
838                    setInputExtras(a.getResourceId(attr, 0));
839                } catch (XmlPullParserException e) {
840                    Log.w(LOG_TAG, "Failure reading input extras", e);
841                } catch (IOException e) {
842                    Log.w(LOG_TAG, "Failure reading input extras", e);
843                }
844                break;
845
846            case com.android.internal.R.styleable.TextView_textCursorDrawable:
847                mCursorDrawableRes = a.getResourceId(attr, 0);
848                break;
849
850            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
851                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
852                break;
853
854            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
855                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
856                break;
857
858            case com.android.internal.R.styleable.TextView_textSelectHandle:
859                mTextSelectHandleRes = a.getResourceId(attr, 0);
860                break;
861
862            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
863                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
864                break;
865
866            case com.android.internal.R.styleable.TextView_textIsSelectable:
867                setTextIsSelectable(a.getBoolean(attr, false));
868                break;
869
870            case com.android.internal.R.styleable.TextView_textAllCaps:
871                allCaps = a.getBoolean(attr, false);
872                break;
873            }
874        }
875        a.recycle();
876
877        BufferType bufferType = BufferType.EDITABLE;
878
879        final int variation =
880                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
881        final boolean passwordInputType = variation
882                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
883        final boolean webPasswordInputType = variation
884                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
885        final boolean numberPasswordInputType = variation
886                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
887
888        if (inputMethod != null) {
889            Class<?> c;
890
891            try {
892                c = Class.forName(inputMethod.toString());
893            } catch (ClassNotFoundException ex) {
894                throw new RuntimeException(ex);
895            }
896
897            try {
898                createEditorIfNeeded();
899                mEditor.mKeyListener = (KeyListener) c.newInstance();
900            } catch (InstantiationException ex) {
901                throw new RuntimeException(ex);
902            } catch (IllegalAccessException ex) {
903                throw new RuntimeException(ex);
904            }
905            try {
906                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
907                        ? inputType
908                        : mEditor.mKeyListener.getInputType();
909            } catch (IncompatibleClassChangeError e) {
910                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
911            }
912        } else if (digits != null) {
913            createEditorIfNeeded();
914            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
915            // If no input type was specified, we will default to generic
916            // text, since we can't tell the IME about the set of digits
917            // that was selected.
918            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
919                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
920        } else if (inputType != EditorInfo.TYPE_NULL) {
921            setInputType(inputType, true);
922            // If set, the input type overrides what was set using the deprecated singleLine flag.
923            singleLine = !isMultilineInputType(inputType);
924        } else if (phone) {
925            createEditorIfNeeded();
926            mEditor.mKeyListener = DialerKeyListener.getInstance();
927            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
928        } else if (numeric != 0) {
929            createEditorIfNeeded();
930            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
931                                                   (numeric & DECIMAL) != 0);
932            inputType = EditorInfo.TYPE_CLASS_NUMBER;
933            if ((numeric & SIGNED) != 0) {
934                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
935            }
936            if ((numeric & DECIMAL) != 0) {
937                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
938            }
939            mEditor.mInputType = inputType;
940        } else if (autotext || autocap != -1) {
941            TextKeyListener.Capitalize cap;
942
943            inputType = EditorInfo.TYPE_CLASS_TEXT;
944
945            switch (autocap) {
946            case 1:
947                cap = TextKeyListener.Capitalize.SENTENCES;
948                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
949                break;
950
951            case 2:
952                cap = TextKeyListener.Capitalize.WORDS;
953                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
954                break;
955
956            case 3:
957                cap = TextKeyListener.Capitalize.CHARACTERS;
958                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
959                break;
960
961            default:
962                cap = TextKeyListener.Capitalize.NONE;
963                break;
964            }
965
966            createEditorIfNeeded();
967            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
968            mEditor.mInputType = inputType;
969        } else if (isTextSelectable()) {
970            // Prevent text changes from keyboard.
971            if (mEditor != null) {
972                mEditor.mKeyListener = null;
973                mEditor.mInputType = EditorInfo.TYPE_NULL;
974            }
975            bufferType = BufferType.SPANNABLE;
976            // So that selection can be changed using arrow keys and touch is handled.
977            setMovementMethod(ArrowKeyMovementMethod.getInstance());
978        } else if (editable) {
979            createEditorIfNeeded();
980            mEditor.mKeyListener = TextKeyListener.getInstance();
981            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
982        } else {
983            if (mEditor != null) mEditor.mKeyListener = null;
984
985            switch (buffertype) {
986                case 0:
987                    bufferType = BufferType.NORMAL;
988                    break;
989                case 1:
990                    bufferType = BufferType.SPANNABLE;
991                    break;
992                case 2:
993                    bufferType = BufferType.EDITABLE;
994                    break;
995            }
996        }
997
998        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
999                webPasswordInputType, numberPasswordInputType);
1000
1001        if (selectallonfocus) {
1002            createEditorIfNeeded();
1003            mEditor.mSelectAllOnFocus = true;
1004
1005            if (bufferType == BufferType.NORMAL)
1006                bufferType = BufferType.SPANNABLE;
1007        }
1008
1009        setCompoundDrawablesWithIntrinsicBounds(
1010            drawableLeft, drawableTop, drawableRight, drawableBottom);
1011        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1012        setCompoundDrawablePadding(drawablePadding);
1013
1014        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1015        // of lines of height are unchanged for multi-line TextViews.
1016        setInputTypeSingleLine(singleLine);
1017        applySingleLine(singleLine, singleLine, singleLine);
1018
1019        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1020                ellipsize = 3; // END
1021        }
1022
1023        switch (ellipsize) {
1024            case 1:
1025                setEllipsize(TextUtils.TruncateAt.START);
1026                break;
1027            case 2:
1028                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1029                break;
1030            case 3:
1031                setEllipsize(TextUtils.TruncateAt.END);
1032                break;
1033            case 4:
1034                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1035                    setHorizontalFadingEdgeEnabled(true);
1036                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1037                } else {
1038                    setHorizontalFadingEdgeEnabled(false);
1039                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1040                }
1041                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1042                break;
1043        }
1044
1045        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1046        setHintTextColor(textColorHint);
1047        setLinkTextColor(textColorLink);
1048        if (textColorHighlight != 0) {
1049            setHighlightColor(textColorHighlight);
1050        }
1051        setRawTextSize(textSize);
1052
1053        if (allCaps) {
1054            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1055        }
1056
1057        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1058            setTransformationMethod(PasswordTransformationMethod.getInstance());
1059            typefaceIndex = MONOSPACE;
1060        } else if (mEditor != null &&
1061                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1062                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1063            typefaceIndex = MONOSPACE;
1064        }
1065
1066        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1067
1068        if (shadowcolor != 0) {
1069            setShadowLayer(r, dx, dy, shadowcolor);
1070        }
1071
1072        if (maxlength >= 0) {
1073            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1074        } else {
1075            setFilters(NO_FILTERS);
1076        }
1077
1078        setText(text, bufferType);
1079        if (hint != null) setHint(hint);
1080
1081        /*
1082         * Views are not normally focusable unless specified to be.
1083         * However, TextViews that have input or movement methods *are*
1084         * focusable by default.
1085         */
1086        a = context.obtainStyledAttributes(attrs,
1087                                           com.android.internal.R.styleable.View,
1088                                           defStyle, 0);
1089
1090        boolean focusable = mMovement != null || getKeyListener() != null;
1091        boolean clickable = focusable;
1092        boolean longClickable = focusable;
1093
1094        n = a.getIndexCount();
1095        for (int i = 0; i < n; i++) {
1096            int attr = a.getIndex(i);
1097
1098            switch (attr) {
1099            case com.android.internal.R.styleable.View_focusable:
1100                focusable = a.getBoolean(attr, focusable);
1101                break;
1102
1103            case com.android.internal.R.styleable.View_clickable:
1104                clickable = a.getBoolean(attr, clickable);
1105                break;
1106
1107            case com.android.internal.R.styleable.View_longClickable:
1108                longClickable = a.getBoolean(attr, longClickable);
1109                break;
1110            }
1111        }
1112        a.recycle();
1113
1114        setFocusable(focusable);
1115        setClickable(clickable);
1116        setLongClickable(longClickable);
1117
1118        if (mEditor != null) mEditor.prepareCursorControllers();
1119
1120        // If not explicitly specified this view is important for accessibility.
1121        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1122            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1123        }
1124    }
1125
1126    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1127        Typeface tf = null;
1128        if (familyName != null) {
1129            tf = Typeface.create(familyName, styleIndex);
1130            if (tf != null) {
1131                setTypeface(tf);
1132                return;
1133            }
1134        }
1135        switch (typefaceIndex) {
1136            case SANS:
1137                tf = Typeface.SANS_SERIF;
1138                break;
1139
1140            case SERIF:
1141                tf = Typeface.SERIF;
1142                break;
1143
1144            case MONOSPACE:
1145                tf = Typeface.MONOSPACE;
1146                break;
1147        }
1148
1149        setTypeface(tf, styleIndex);
1150    }
1151
1152    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1153        boolean hasRelativeDrawables = (start != null) || (end != null);
1154        if (hasRelativeDrawables) {
1155            Drawables dr = mDrawables;
1156            if (dr == null) {
1157                mDrawables = dr = new Drawables();
1158            }
1159            final Rect compoundRect = dr.mCompoundRect;
1160            int[] state = getDrawableState();
1161            if (start != null) {
1162                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1163                start.setState(state);
1164                start.copyBounds(compoundRect);
1165                start.setCallback(this);
1166
1167                dr.mDrawableStart = start;
1168                dr.mDrawableSizeStart = compoundRect.width();
1169                dr.mDrawableHeightStart = compoundRect.height();
1170            } else {
1171                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1172            }
1173            if (end != null) {
1174                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1175                end.setState(state);
1176                end.copyBounds(compoundRect);
1177                end.setCallback(this);
1178
1179                dr.mDrawableEnd = end;
1180                dr.mDrawableSizeEnd = compoundRect.width();
1181                dr.mDrawableHeightEnd = compoundRect.height();
1182            } else {
1183                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1184            }
1185        }
1186    }
1187
1188    @Override
1189    public void setEnabled(boolean enabled) {
1190        if (enabled == isEnabled()) {
1191            return;
1192        }
1193
1194        if (!enabled) {
1195            // Hide the soft input if the currently active TextView is disabled
1196            InputMethodManager imm = InputMethodManager.peekInstance();
1197            if (imm != null && imm.isActive(this)) {
1198                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1199            }
1200        }
1201
1202        super.setEnabled(enabled);
1203
1204        if (enabled) {
1205            // Make sure IME is updated with current editor info.
1206            InputMethodManager imm = InputMethodManager.peekInstance();
1207            if (imm != null) imm.restartInput(this);
1208        }
1209
1210        // Will change text color
1211        if (mEditor != null) {
1212            mEditor.invalidateTextDisplayList();
1213            mEditor.prepareCursorControllers();
1214
1215            // start or stop the cursor blinking as appropriate
1216            mEditor.makeBlink();
1217        }
1218    }
1219
1220    /**
1221     * Sets the typeface and style in which the text should be displayed,
1222     * and turns on the fake bold and italic bits in the Paint if the
1223     * Typeface that you provided does not have all the bits in the
1224     * style that you specified.
1225     *
1226     * @attr ref android.R.styleable#TextView_typeface
1227     * @attr ref android.R.styleable#TextView_textStyle
1228     */
1229    public void setTypeface(Typeface tf, int style) {
1230        if (style > 0) {
1231            if (tf == null) {
1232                tf = Typeface.defaultFromStyle(style);
1233            } else {
1234                tf = Typeface.create(tf, style);
1235            }
1236
1237            setTypeface(tf);
1238            // now compute what (if any) algorithmic styling is needed
1239            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1240            int need = style & ~typefaceStyle;
1241            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1242            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1243        } else {
1244            mTextPaint.setFakeBoldText(false);
1245            mTextPaint.setTextSkewX(0);
1246            setTypeface(tf);
1247        }
1248    }
1249
1250    /**
1251     * Subclasses override this to specify that they have a KeyListener
1252     * by default even if not specifically called for in the XML options.
1253     */
1254    protected boolean getDefaultEditable() {
1255        return false;
1256    }
1257
1258    /**
1259     * Subclasses override this to specify a default movement method.
1260     */
1261    protected MovementMethod getDefaultMovementMethod() {
1262        return null;
1263    }
1264
1265    /**
1266     * Return the text the TextView is displaying. If setText() was called with
1267     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1268     * the return value from this method to Spannable or Editable, respectively.
1269     *
1270     * Note: The content of the return value should not be modified. If you want
1271     * a modifiable one, you should make your own copy first.
1272     *
1273     * @attr ref android.R.styleable#TextView_text
1274     */
1275    @ViewDebug.CapturedViewProperty
1276    public CharSequence getText() {
1277        return mText;
1278    }
1279
1280    /**
1281     * Returns the length, in characters, of the text managed by this TextView
1282     */
1283    public int length() {
1284        return mText.length();
1285    }
1286
1287    /**
1288     * Return the text the TextView is displaying as an Editable object.  If
1289     * the text is not editable, null is returned.
1290     *
1291     * @see #getText
1292     */
1293    public Editable getEditableText() {
1294        return (mText instanceof Editable) ? (Editable)mText : null;
1295    }
1296
1297    /**
1298     * @return the height of one standard line in pixels.  Note that markup
1299     * within the text can cause individual lines to be taller or shorter
1300     * than this height, and the layout may contain additional first-
1301     * or last-line padding.
1302     */
1303    public int getLineHeight() {
1304        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1305    }
1306
1307    /**
1308     * @return the Layout that is currently being used to display the text.
1309     * This can be null if the text or width has recently changes.
1310     */
1311    public final Layout getLayout() {
1312        return mLayout;
1313    }
1314
1315    /**
1316     * @return the Layout that is currently being used to display the hint text.
1317     * This can be null.
1318     */
1319    final Layout getHintLayout() {
1320        return mHintLayout;
1321    }
1322
1323    /**
1324     * @return the current key listener for this TextView.
1325     * This will frequently be null for non-EditText TextViews.
1326     *
1327     * @attr ref android.R.styleable#TextView_numeric
1328     * @attr ref android.R.styleable#TextView_digits
1329     * @attr ref android.R.styleable#TextView_phoneNumber
1330     * @attr ref android.R.styleable#TextView_inputMethod
1331     * @attr ref android.R.styleable#TextView_capitalize
1332     * @attr ref android.R.styleable#TextView_autoText
1333     */
1334    public final KeyListener getKeyListener() {
1335        return mEditor == null ? null : mEditor.mKeyListener;
1336    }
1337
1338    /**
1339     * Sets the key listener to be used with this TextView.  This can be null
1340     * to disallow user input.  Note that this method has significant and
1341     * subtle interactions with soft keyboards and other input method:
1342     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1343     * for important details.  Calling this method will replace the current
1344     * content type of the text view with the content type returned by the
1345     * key listener.
1346     * <p>
1347     * Be warned that if you want a TextView with a key listener or movement
1348     * method not to be focusable, or if you want a TextView without a
1349     * key listener or movement method to be focusable, you must call
1350     * {@link #setFocusable} again after calling this to get the focusability
1351     * back the way you want it.
1352     *
1353     * @attr ref android.R.styleable#TextView_numeric
1354     * @attr ref android.R.styleable#TextView_digits
1355     * @attr ref android.R.styleable#TextView_phoneNumber
1356     * @attr ref android.R.styleable#TextView_inputMethod
1357     * @attr ref android.R.styleable#TextView_capitalize
1358     * @attr ref android.R.styleable#TextView_autoText
1359     */
1360    public void setKeyListener(KeyListener input) {
1361        setKeyListenerOnly(input);
1362        fixFocusableAndClickableSettings();
1363
1364        if (input != null) {
1365            createEditorIfNeeded();
1366            try {
1367                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1368            } catch (IncompatibleClassChangeError e) {
1369                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1370            }
1371            // Change inputType, without affecting transformation.
1372            // No need to applySingleLine since mSingleLine is unchanged.
1373            setInputTypeSingleLine(mSingleLine);
1374        } else {
1375            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1376        }
1377
1378        InputMethodManager imm = InputMethodManager.peekInstance();
1379        if (imm != null) imm.restartInput(this);
1380    }
1381
1382    private void setKeyListenerOnly(KeyListener input) {
1383        if (mEditor == null && input == null) return; // null is the default value
1384
1385        createEditorIfNeeded();
1386        if (mEditor.mKeyListener != input) {
1387            mEditor.mKeyListener = input;
1388            if (input != null && !(mText instanceof Editable)) {
1389                setText(mText);
1390            }
1391
1392            setFilters((Editable) mText, mFilters);
1393        }
1394    }
1395
1396    /**
1397     * @return the movement method being used for this TextView.
1398     * This will frequently be null for non-EditText TextViews.
1399     */
1400    public final MovementMethod getMovementMethod() {
1401        return mMovement;
1402    }
1403
1404    /**
1405     * Sets the movement method (arrow key handler) to be used for
1406     * this TextView.  This can be null to disallow using the arrow keys
1407     * to move the cursor or scroll the view.
1408     * <p>
1409     * Be warned that if you want a TextView with a key listener or movement
1410     * method not to be focusable, or if you want a TextView without a
1411     * key listener or movement method to be focusable, you must call
1412     * {@link #setFocusable} again after calling this to get the focusability
1413     * back the way you want it.
1414     */
1415    public final void setMovementMethod(MovementMethod movement) {
1416        if (mMovement != movement) {
1417            mMovement = movement;
1418
1419            if (movement != null && !(mText instanceof Spannable)) {
1420                setText(mText);
1421            }
1422
1423            fixFocusableAndClickableSettings();
1424
1425            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1426            // mMovement
1427            if (mEditor != null) mEditor.prepareCursorControllers();
1428        }
1429    }
1430
1431    private void fixFocusableAndClickableSettings() {
1432        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1433            setFocusable(true);
1434            setClickable(true);
1435            setLongClickable(true);
1436        } else {
1437            setFocusable(false);
1438            setClickable(false);
1439            setLongClickable(false);
1440        }
1441    }
1442
1443    /**
1444     * @return the current transformation method for this TextView.
1445     * This will frequently be null except for single-line and password
1446     * fields.
1447     *
1448     * @attr ref android.R.styleable#TextView_password
1449     * @attr ref android.R.styleable#TextView_singleLine
1450     */
1451    public final TransformationMethod getTransformationMethod() {
1452        return mTransformation;
1453    }
1454
1455    /**
1456     * Sets the transformation that is applied to the text that this
1457     * TextView is displaying.
1458     *
1459     * @attr ref android.R.styleable#TextView_password
1460     * @attr ref android.R.styleable#TextView_singleLine
1461     */
1462    public final void setTransformationMethod(TransformationMethod method) {
1463        if (method == mTransformation) {
1464            // Avoid the setText() below if the transformation is
1465            // the same.
1466            return;
1467        }
1468        if (mTransformation != null) {
1469            if (mText instanceof Spannable) {
1470                ((Spannable) mText).removeSpan(mTransformation);
1471            }
1472        }
1473
1474        mTransformation = method;
1475
1476        if (method instanceof TransformationMethod2) {
1477            TransformationMethod2 method2 = (TransformationMethod2) method;
1478            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1479            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1480        } else {
1481            mAllowTransformationLengthChange = false;
1482        }
1483
1484        setText(mText);
1485
1486        if (hasPasswordTransformationMethod()) {
1487            notifyAccessibilityStateChanged();
1488        }
1489    }
1490
1491    /**
1492     * Returns the top padding of the view, plus space for the top
1493     * Drawable if any.
1494     */
1495    public int getCompoundPaddingTop() {
1496        final Drawables dr = mDrawables;
1497        if (dr == null || dr.mDrawableTop == null) {
1498            return mPaddingTop;
1499        } else {
1500            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1501        }
1502    }
1503
1504    /**
1505     * Returns the bottom padding of the view, plus space for the bottom
1506     * Drawable if any.
1507     */
1508    public int getCompoundPaddingBottom() {
1509        final Drawables dr = mDrawables;
1510        if (dr == null || dr.mDrawableBottom == null) {
1511            return mPaddingBottom;
1512        } else {
1513            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1514        }
1515    }
1516
1517    /**
1518     * Returns the left padding of the view, plus space for the left
1519     * Drawable if any.
1520     */
1521    public int getCompoundPaddingLeft() {
1522        final Drawables dr = mDrawables;
1523        if (dr == null || dr.mDrawableLeft == null) {
1524            return mPaddingLeft;
1525        } else {
1526            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1527        }
1528    }
1529
1530    /**
1531     * Returns the right padding of the view, plus space for the right
1532     * Drawable if any.
1533     */
1534    public int getCompoundPaddingRight() {
1535        final Drawables dr = mDrawables;
1536        if (dr == null || dr.mDrawableRight == null) {
1537            return mPaddingRight;
1538        } else {
1539            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1540        }
1541    }
1542
1543    /**
1544     * Returns the start padding of the view, plus space for the start
1545     * Drawable if any.
1546     */
1547    public int getCompoundPaddingStart() {
1548        resolveDrawables();
1549        switch(getLayoutDirection()) {
1550            default:
1551            case LAYOUT_DIRECTION_LTR:
1552                return getCompoundPaddingLeft();
1553            case LAYOUT_DIRECTION_RTL:
1554                return getCompoundPaddingRight();
1555        }
1556    }
1557
1558    /**
1559     * Returns the end padding of the view, plus space for the end
1560     * Drawable if any.
1561     */
1562    public int getCompoundPaddingEnd() {
1563        resolveDrawables();
1564        switch(getLayoutDirection()) {
1565            default:
1566            case LAYOUT_DIRECTION_LTR:
1567                return getCompoundPaddingRight();
1568            case LAYOUT_DIRECTION_RTL:
1569                return getCompoundPaddingLeft();
1570        }
1571    }
1572
1573    /**
1574     * Returns the extended top padding of the view, including both the
1575     * top Drawable if any and any extra space to keep more than maxLines
1576     * of text from showing.  It is only valid to call this after measuring.
1577     */
1578    public int getExtendedPaddingTop() {
1579        if (mMaxMode != LINES) {
1580            return getCompoundPaddingTop();
1581        }
1582
1583        if (mLayout.getLineCount() <= mMaximum) {
1584            return getCompoundPaddingTop();
1585        }
1586
1587        int top = getCompoundPaddingTop();
1588        int bottom = getCompoundPaddingBottom();
1589        int viewht = getHeight() - top - bottom;
1590        int layoutht = mLayout.getLineTop(mMaximum);
1591
1592        if (layoutht >= viewht) {
1593            return top;
1594        }
1595
1596        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1597        if (gravity == Gravity.TOP) {
1598            return top;
1599        } else if (gravity == Gravity.BOTTOM) {
1600            return top + viewht - layoutht;
1601        } else { // (gravity == Gravity.CENTER_VERTICAL)
1602            return top + (viewht - layoutht) / 2;
1603        }
1604    }
1605
1606    /**
1607     * Returns the extended bottom padding of the view, including both the
1608     * bottom Drawable if any and any extra space to keep more than maxLines
1609     * of text from showing.  It is only valid to call this after measuring.
1610     */
1611    public int getExtendedPaddingBottom() {
1612        if (mMaxMode != LINES) {
1613            return getCompoundPaddingBottom();
1614        }
1615
1616        if (mLayout.getLineCount() <= mMaximum) {
1617            return getCompoundPaddingBottom();
1618        }
1619
1620        int top = getCompoundPaddingTop();
1621        int bottom = getCompoundPaddingBottom();
1622        int viewht = getHeight() - top - bottom;
1623        int layoutht = mLayout.getLineTop(mMaximum);
1624
1625        if (layoutht >= viewht) {
1626            return bottom;
1627        }
1628
1629        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1630        if (gravity == Gravity.TOP) {
1631            return bottom + viewht - layoutht;
1632        } else if (gravity == Gravity.BOTTOM) {
1633            return bottom;
1634        } else { // (gravity == Gravity.CENTER_VERTICAL)
1635            return bottom + (viewht - layoutht) / 2;
1636        }
1637    }
1638
1639    /**
1640     * Returns the total left padding of the view, including the left
1641     * Drawable if any.
1642     */
1643    public int getTotalPaddingLeft() {
1644        return getCompoundPaddingLeft();
1645    }
1646
1647    /**
1648     * Returns the total right padding of the view, including the right
1649     * Drawable if any.
1650     */
1651    public int getTotalPaddingRight() {
1652        return getCompoundPaddingRight();
1653    }
1654
1655    /**
1656     * Returns the total start padding of the view, including the start
1657     * Drawable if any.
1658     */
1659    public int getTotalPaddingStart() {
1660        return getCompoundPaddingStart();
1661    }
1662
1663    /**
1664     * Returns the total end padding of the view, including the end
1665     * Drawable if any.
1666     */
1667    public int getTotalPaddingEnd() {
1668        return getCompoundPaddingEnd();
1669    }
1670
1671    /**
1672     * Returns the total top padding of the view, including the top
1673     * Drawable if any, the extra space to keep more than maxLines
1674     * from showing, and the vertical offset for gravity, if any.
1675     */
1676    public int getTotalPaddingTop() {
1677        return getExtendedPaddingTop() + getVerticalOffset(true);
1678    }
1679
1680    /**
1681     * Returns the total bottom padding of the view, including the bottom
1682     * Drawable if any, the extra space to keep more than maxLines
1683     * from showing, and the vertical offset for gravity, if any.
1684     */
1685    public int getTotalPaddingBottom() {
1686        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1687    }
1688
1689    /**
1690     * Sets the Drawables (if any) to appear to the left of, above,
1691     * to the right of, and below the text.  Use null if you do not
1692     * want a Drawable there.  The Drawables must already have had
1693     * {@link Drawable#setBounds} called.
1694     *
1695     * @attr ref android.R.styleable#TextView_drawableLeft
1696     * @attr ref android.R.styleable#TextView_drawableTop
1697     * @attr ref android.R.styleable#TextView_drawableRight
1698     * @attr ref android.R.styleable#TextView_drawableBottom
1699     */
1700    public void setCompoundDrawables(Drawable left, Drawable top,
1701                                     Drawable right, Drawable bottom) {
1702        Drawables dr = mDrawables;
1703
1704        final boolean drawables = left != null || top != null
1705                || right != null || bottom != null;
1706
1707        if (!drawables) {
1708            // Clearing drawables...  can we free the data structure?
1709            if (dr != null) {
1710                if (dr.mDrawablePadding == 0) {
1711                    mDrawables = null;
1712                } else {
1713                    // We need to retain the last set padding, so just clear
1714                    // out all of the fields in the existing structure.
1715                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
1716                    dr.mDrawableLeft = null;
1717                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1718                    dr.mDrawableTop = null;
1719                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
1720                    dr.mDrawableRight = null;
1721                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1722                    dr.mDrawableBottom = null;
1723                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1724                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1725                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1726                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1727                }
1728            }
1729        } else {
1730            if (dr == null) {
1731                mDrawables = dr = new Drawables();
1732            }
1733
1734            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
1735                dr.mDrawableLeft.setCallback(null);
1736            }
1737            dr.mDrawableLeft = left;
1738
1739            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1740                dr.mDrawableTop.setCallback(null);
1741            }
1742            dr.mDrawableTop = top;
1743
1744            if (dr.mDrawableRight != right && dr.mDrawableRight != null) {
1745                dr.mDrawableRight.setCallback(null);
1746            }
1747            dr.mDrawableRight = right;
1748
1749            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1750                dr.mDrawableBottom.setCallback(null);
1751            }
1752            dr.mDrawableBottom = bottom;
1753
1754            final Rect compoundRect = dr.mCompoundRect;
1755            int[] state;
1756
1757            state = getDrawableState();
1758
1759            if (left != null) {
1760                left.setState(state);
1761                left.copyBounds(compoundRect);
1762                left.setCallback(this);
1763                dr.mDrawableSizeLeft = compoundRect.width();
1764                dr.mDrawableHeightLeft = compoundRect.height();
1765            } else {
1766                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1767            }
1768
1769            if (right != null) {
1770                right.setState(state);
1771                right.copyBounds(compoundRect);
1772                right.setCallback(this);
1773                dr.mDrawableSizeRight = compoundRect.width();
1774                dr.mDrawableHeightRight = compoundRect.height();
1775            } else {
1776                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1777            }
1778
1779            if (top != null) {
1780                top.setState(state);
1781                top.copyBounds(compoundRect);
1782                top.setCallback(this);
1783                dr.mDrawableSizeTop = compoundRect.height();
1784                dr.mDrawableWidthTop = compoundRect.width();
1785            } else {
1786                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1787            }
1788
1789            if (bottom != null) {
1790                bottom.setState(state);
1791                bottom.copyBounds(compoundRect);
1792                bottom.setCallback(this);
1793                dr.mDrawableSizeBottom = compoundRect.height();
1794                dr.mDrawableWidthBottom = compoundRect.width();
1795            } else {
1796                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1797            }
1798        }
1799
1800        invalidate();
1801        requestLayout();
1802    }
1803
1804    /**
1805     * Sets the Drawables (if any) to appear to the left of, above,
1806     * to the right of, and below the text.  Use 0 if you do not
1807     * want a Drawable there. The Drawables' bounds will be set to
1808     * their intrinsic bounds.
1809     *
1810     * @param left Resource identifier of the left Drawable.
1811     * @param top Resource identifier of the top Drawable.
1812     * @param right Resource identifier of the right Drawable.
1813     * @param bottom Resource identifier of the bottom Drawable.
1814     *
1815     * @attr ref android.R.styleable#TextView_drawableLeft
1816     * @attr ref android.R.styleable#TextView_drawableTop
1817     * @attr ref android.R.styleable#TextView_drawableRight
1818     * @attr ref android.R.styleable#TextView_drawableBottom
1819     */
1820    @android.view.RemotableViewMethod
1821    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1822        final Resources resources = getContext().getResources();
1823        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null,
1824                top != 0 ? resources.getDrawable(top) : null,
1825                right != 0 ? resources.getDrawable(right) : null,
1826                bottom != 0 ? resources.getDrawable(bottom) : null);
1827    }
1828
1829    /**
1830     * Sets the Drawables (if any) to appear to the left of, above,
1831     * to the right of, and below the text.  Use null if you do not
1832     * want a Drawable there. The Drawables' bounds will be set to
1833     * their intrinsic bounds.
1834     *
1835     * @attr ref android.R.styleable#TextView_drawableLeft
1836     * @attr ref android.R.styleable#TextView_drawableTop
1837     * @attr ref android.R.styleable#TextView_drawableRight
1838     * @attr ref android.R.styleable#TextView_drawableBottom
1839     */
1840    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1841            Drawable right, Drawable bottom) {
1842
1843        if (left != null) {
1844            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1845        }
1846        if (right != null) {
1847            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1848        }
1849        if (top != null) {
1850            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1851        }
1852        if (bottom != null) {
1853            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
1854        }
1855        setCompoundDrawables(left, top, right, bottom);
1856    }
1857
1858    /**
1859     * Sets the Drawables (if any) to appear to the start of, above,
1860     * to the end of, and below the text.  Use null if you do not
1861     * want a Drawable there.  The Drawables must already have had
1862     * {@link Drawable#setBounds} called.
1863     *
1864     * @attr ref android.R.styleable#TextView_drawableStart
1865     * @attr ref android.R.styleable#TextView_drawableTop
1866     * @attr ref android.R.styleable#TextView_drawableEnd
1867     * @attr ref android.R.styleable#TextView_drawableBottom
1868     */
1869    public void setCompoundDrawablesRelative(Drawable start, Drawable top,
1870                                     Drawable end, Drawable bottom) {
1871        Drawables dr = mDrawables;
1872
1873        final boolean drawables = start != null || top != null
1874                || end != null || bottom != null;
1875
1876        if (!drawables) {
1877            // Clearing drawables...  can we free the data structure?
1878            if (dr != null) {
1879                if (dr.mDrawablePadding == 0) {
1880                    mDrawables = null;
1881                } else {
1882                    // We need to retain the last set padding, so just clear
1883                    // out all of the fields in the existing structure.
1884                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
1885                    dr.mDrawableStart = null;
1886                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1887                    dr.mDrawableTop = null;
1888                    if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
1889                    dr.mDrawableEnd = null;
1890                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1891                    dr.mDrawableBottom = null;
1892                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1893                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1894                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1895                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1896                }
1897            }
1898        } else {
1899            if (dr == null) {
1900                mDrawables = dr = new Drawables();
1901            }
1902
1903            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
1904                dr.mDrawableStart.setCallback(null);
1905            }
1906            dr.mDrawableStart = start;
1907
1908            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1909                dr.mDrawableTop.setCallback(null);
1910            }
1911            dr.mDrawableTop = top;
1912
1913            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
1914                dr.mDrawableEnd.setCallback(null);
1915            }
1916            dr.mDrawableEnd = end;
1917
1918            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1919                dr.mDrawableBottom.setCallback(null);
1920            }
1921            dr.mDrawableBottom = bottom;
1922
1923            final Rect compoundRect = dr.mCompoundRect;
1924            int[] state;
1925
1926            state = getDrawableState();
1927
1928            if (start != null) {
1929                start.setState(state);
1930                start.copyBounds(compoundRect);
1931                start.setCallback(this);
1932                dr.mDrawableSizeStart = compoundRect.width();
1933                dr.mDrawableHeightStart = compoundRect.height();
1934            } else {
1935                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1936            }
1937
1938            if (end != null) {
1939                end.setState(state);
1940                end.copyBounds(compoundRect);
1941                end.setCallback(this);
1942                dr.mDrawableSizeEnd = compoundRect.width();
1943                dr.mDrawableHeightEnd = compoundRect.height();
1944            } else {
1945                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1946            }
1947
1948            if (top != null) {
1949                top.setState(state);
1950                top.copyBounds(compoundRect);
1951                top.setCallback(this);
1952                dr.mDrawableSizeTop = compoundRect.height();
1953                dr.mDrawableWidthTop = compoundRect.width();
1954            } else {
1955                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1956            }
1957
1958            if (bottom != null) {
1959                bottom.setState(state);
1960                bottom.copyBounds(compoundRect);
1961                bottom.setCallback(this);
1962                dr.mDrawableSizeBottom = compoundRect.height();
1963                dr.mDrawableWidthBottom = compoundRect.width();
1964            } else {
1965                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1966            }
1967        }
1968
1969        resolveDrawables();
1970        invalidate();
1971        requestLayout();
1972    }
1973
1974    /**
1975     * Sets the Drawables (if any) to appear to the start of, above,
1976     * to the end of, and below the text.  Use 0 if you do not
1977     * want a Drawable there. The Drawables' bounds will be set to
1978     * their intrinsic bounds.
1979     *
1980     * @param start Resource identifier of the start Drawable.
1981     * @param top Resource identifier of the top Drawable.
1982     * @param end Resource identifier of the end Drawable.
1983     * @param bottom Resource identifier of the bottom Drawable.
1984     *
1985     * @attr ref android.R.styleable#TextView_drawableStart
1986     * @attr ref android.R.styleable#TextView_drawableTop
1987     * @attr ref android.R.styleable#TextView_drawableEnd
1988     * @attr ref android.R.styleable#TextView_drawableBottom
1989     */
1990    @android.view.RemotableViewMethod
1991    public void setCompoundDrawablesRelativeWithIntrinsicBounds(int start, int top, int end,
1992            int bottom) {
1993        resetResolvedDrawables();
1994        final Resources resources = getContext().getResources();
1995        setCompoundDrawablesRelativeWithIntrinsicBounds(
1996                start != 0 ? resources.getDrawable(start) : null,
1997                top != 0 ? resources.getDrawable(top) : null,
1998                end != 0 ? resources.getDrawable(end) : null,
1999                bottom != 0 ? resources.getDrawable(bottom) : null);
2000    }
2001
2002    /**
2003     * Sets the Drawables (if any) to appear to the start of, above,
2004     * to the end of, and below the text.  Use null if you do not
2005     * want a Drawable there. The Drawables' bounds will be set to
2006     * their intrinsic bounds.
2007     *
2008     * @attr ref android.R.styleable#TextView_drawableStart
2009     * @attr ref android.R.styleable#TextView_drawableTop
2010     * @attr ref android.R.styleable#TextView_drawableEnd
2011     * @attr ref android.R.styleable#TextView_drawableBottom
2012     */
2013    public void setCompoundDrawablesRelativeWithIntrinsicBounds(Drawable start, Drawable top,
2014            Drawable end, Drawable bottom) {
2015
2016        resetResolvedDrawables();
2017        if (start != null) {
2018            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2019        }
2020        if (end != null) {
2021            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2022        }
2023        if (top != null) {
2024            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2025        }
2026        if (bottom != null) {
2027            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2028        }
2029        setCompoundDrawablesRelative(start, top, end, bottom);
2030    }
2031
2032    /**
2033     * Returns drawables for the left, top, right, and bottom borders.
2034     *
2035     * @attr ref android.R.styleable#TextView_drawableLeft
2036     * @attr ref android.R.styleable#TextView_drawableTop
2037     * @attr ref android.R.styleable#TextView_drawableRight
2038     * @attr ref android.R.styleable#TextView_drawableBottom
2039     */
2040    public Drawable[] getCompoundDrawables() {
2041        final Drawables dr = mDrawables;
2042        if (dr != null) {
2043            return new Drawable[] {
2044                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
2045            };
2046        } else {
2047            return new Drawable[] { null, null, null, null };
2048        }
2049    }
2050
2051    /**
2052     * Returns drawables for the start, top, end, and bottom borders.
2053     *
2054     * @attr ref android.R.styleable#TextView_drawableStart
2055     * @attr ref android.R.styleable#TextView_drawableTop
2056     * @attr ref android.R.styleable#TextView_drawableEnd
2057     * @attr ref android.R.styleable#TextView_drawableBottom
2058     */
2059    public Drawable[] getCompoundDrawablesRelative() {
2060        final Drawables dr = mDrawables;
2061        if (dr != null) {
2062            return new Drawable[] {
2063                dr.mDrawableStart, dr.mDrawableTop, dr.mDrawableEnd, dr.mDrawableBottom
2064            };
2065        } else {
2066            return new Drawable[] { null, null, null, null };
2067        }
2068    }
2069
2070    /**
2071     * Sets the size of the padding between the compound drawables and
2072     * the text.
2073     *
2074     * @attr ref android.R.styleable#TextView_drawablePadding
2075     */
2076    @android.view.RemotableViewMethod
2077    public void setCompoundDrawablePadding(int pad) {
2078        Drawables dr = mDrawables;
2079        if (pad == 0) {
2080            if (dr != null) {
2081                dr.mDrawablePadding = pad;
2082            }
2083        } else {
2084            if (dr == null) {
2085                mDrawables = dr = new Drawables();
2086            }
2087            dr.mDrawablePadding = pad;
2088        }
2089
2090        invalidate();
2091        requestLayout();
2092    }
2093
2094    /**
2095     * Returns the padding between the compound drawables and the text.
2096     *
2097     * @attr ref android.R.styleable#TextView_drawablePadding
2098     */
2099    public int getCompoundDrawablePadding() {
2100        final Drawables dr = mDrawables;
2101        return dr != null ? dr.mDrawablePadding : 0;
2102    }
2103
2104    @Override
2105    public void setPadding(int left, int top, int right, int bottom) {
2106        if (left != mPaddingLeft ||
2107            right != mPaddingRight ||
2108            top != mPaddingTop ||
2109            bottom != mPaddingBottom) {
2110            nullLayouts();
2111        }
2112
2113        // the super call will requestLayout()
2114        super.setPadding(left, top, right, bottom);
2115        invalidate();
2116    }
2117
2118    @Override
2119    public void setPaddingRelative(int start, int top, int end, int bottom) {
2120        if (start != getPaddingStart() ||
2121            end != getPaddingEnd() ||
2122            top != mPaddingTop ||
2123            bottom != mPaddingBottom) {
2124            nullLayouts();
2125        }
2126
2127        // the super call will requestLayout()
2128        super.setPaddingRelative(start, top, end, bottom);
2129        invalidate();
2130    }
2131
2132    /**
2133     * Gets the autolink mask of the text.  See {@link
2134     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2135     * possible values.
2136     *
2137     * @attr ref android.R.styleable#TextView_autoLink
2138     */
2139    public final int getAutoLinkMask() {
2140        return mAutoLinkMask;
2141    }
2142
2143    /**
2144     * Sets the text color, size, style, hint color, and highlight color
2145     * from the specified TextAppearance resource.
2146     */
2147    public void setTextAppearance(Context context, int resid) {
2148        TypedArray appearance =
2149            context.obtainStyledAttributes(resid,
2150                                           com.android.internal.R.styleable.TextAppearance);
2151
2152        int color;
2153        ColorStateList colors;
2154        int ts;
2155
2156        color = appearance.getColor(
2157                com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
2158        if (color != 0) {
2159            setHighlightColor(color);
2160        }
2161
2162        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2163                                              TextAppearance_textColor);
2164        if (colors != null) {
2165            setTextColor(colors);
2166        }
2167
2168        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
2169                                              TextAppearance_textSize, 0);
2170        if (ts != 0) {
2171            setRawTextSize(ts);
2172        }
2173
2174        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2175                                              TextAppearance_textColorHint);
2176        if (colors != null) {
2177            setHintTextColor(colors);
2178        }
2179
2180        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2181                                              TextAppearance_textColorLink);
2182        if (colors != null) {
2183            setLinkTextColor(colors);
2184        }
2185
2186        String familyName;
2187        int typefaceIndex, styleIndex;
2188
2189        familyName = appearance.getString(com.android.internal.R.styleable.
2190                                          TextAppearance_fontFamily);
2191        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
2192                                          TextAppearance_typeface, -1);
2193        styleIndex = appearance.getInt(com.android.internal.R.styleable.
2194                                       TextAppearance_textStyle, -1);
2195
2196        setTypefaceFromAttrs(familyName, typefaceIndex, styleIndex);
2197
2198        if (appearance.getBoolean(com.android.internal.R.styleable.TextAppearance_textAllCaps,
2199                false)) {
2200            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2201        }
2202
2203        appearance.recycle();
2204    }
2205
2206    /**
2207     * Get the default {@link Locale} of the text in this TextView.
2208     * @return the default {@link Locale} of the text in this TextView.
2209     */
2210    public Locale getTextLocale() {
2211        return mTextPaint.getTextLocale();
2212    }
2213
2214    /**
2215     * Set the default {@link Locale} of the text in this TextView to the given value. This value
2216     * is used to choose appropriate typefaces for ambiguous characters. Typically used for CJK
2217     * locales to disambiguate Hanzi/Kanji/Hanja characters.
2218     *
2219     * @param locale the {@link Locale} for drawing text, must not be null.
2220     *
2221     * @see Paint#setTextLocale
2222     */
2223    public void setTextLocale(Locale locale) {
2224        mTextPaint.setTextLocale(locale);
2225    }
2226
2227    /**
2228     * @return the size (in pixels) of the default text size in this TextView.
2229     */
2230    @ViewDebug.ExportedProperty(category = "text")
2231    public float getTextSize() {
2232        return mTextPaint.getTextSize();
2233    }
2234
2235    /**
2236     * Set the default text size to the given value, interpreted as "scaled
2237     * pixel" units.  This size is adjusted based on the current density and
2238     * user font size preference.
2239     *
2240     * @param size The scaled pixel size.
2241     *
2242     * @attr ref android.R.styleable#TextView_textSize
2243     */
2244    @android.view.RemotableViewMethod
2245    public void setTextSize(float size) {
2246        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2247    }
2248
2249    /**
2250     * Set the default text size to a given unit and value.  See {@link
2251     * TypedValue} for the possible dimension units.
2252     *
2253     * @param unit The desired dimension unit.
2254     * @param size The desired size in the given units.
2255     *
2256     * @attr ref android.R.styleable#TextView_textSize
2257     */
2258    public void setTextSize(int unit, float size) {
2259        Context c = getContext();
2260        Resources r;
2261
2262        if (c == null)
2263            r = Resources.getSystem();
2264        else
2265            r = c.getResources();
2266
2267        setRawTextSize(TypedValue.applyDimension(
2268            unit, size, r.getDisplayMetrics()));
2269    }
2270
2271    private void setRawTextSize(float size) {
2272        if (size != mTextPaint.getTextSize()) {
2273            mTextPaint.setTextSize(size);
2274
2275            if (mLayout != null) {
2276                nullLayouts();
2277                requestLayout();
2278                invalidate();
2279            }
2280        }
2281    }
2282
2283    /**
2284     * @return the extent by which text is currently being stretched
2285     * horizontally.  This will usually be 1.
2286     */
2287    public float getTextScaleX() {
2288        return mTextPaint.getTextScaleX();
2289    }
2290
2291    /**
2292     * Sets the extent by which text should be stretched horizontally.
2293     *
2294     * @attr ref android.R.styleable#TextView_textScaleX
2295     */
2296    @android.view.RemotableViewMethod
2297    public void setTextScaleX(float size) {
2298        if (size != mTextPaint.getTextScaleX()) {
2299            mUserSetTextScaleX = true;
2300            mTextPaint.setTextScaleX(size);
2301
2302            if (mLayout != null) {
2303                nullLayouts();
2304                requestLayout();
2305                invalidate();
2306            }
2307        }
2308    }
2309
2310    /**
2311     * Sets the typeface and style in which the text should be displayed.
2312     * Note that not all Typeface families actually have bold and italic
2313     * variants, so you may need to use
2314     * {@link #setTypeface(Typeface, int)} to get the appearance
2315     * that you actually want.
2316     *
2317     * @see #getTypeface()
2318     *
2319     * @attr ref android.R.styleable#TextView_fontFamily
2320     * @attr ref android.R.styleable#TextView_typeface
2321     * @attr ref android.R.styleable#TextView_textStyle
2322     */
2323    public void setTypeface(Typeface tf) {
2324        if (mTextPaint.getTypeface() != tf) {
2325            mTextPaint.setTypeface(tf);
2326
2327            if (mLayout != null) {
2328                nullLayouts();
2329                requestLayout();
2330                invalidate();
2331            }
2332        }
2333    }
2334
2335    /**
2336     * @return the current typeface and style in which the text is being
2337     * displayed.
2338     *
2339     * @see #setTypeface(Typeface)
2340     *
2341     * @attr ref android.R.styleable#TextView_fontFamily
2342     * @attr ref android.R.styleable#TextView_typeface
2343     * @attr ref android.R.styleable#TextView_textStyle
2344     */
2345    public Typeface getTypeface() {
2346        return mTextPaint.getTypeface();
2347    }
2348
2349    /**
2350     * Sets the text color for all the states (normal, selected,
2351     * focused) to be this color.
2352     *
2353     * @see #setTextColor(ColorStateList)
2354     * @see #getTextColors()
2355     *
2356     * @attr ref android.R.styleable#TextView_textColor
2357     */
2358    @android.view.RemotableViewMethod
2359    public void setTextColor(int color) {
2360        mTextColor = ColorStateList.valueOf(color);
2361        updateTextColors();
2362    }
2363
2364    /**
2365     * Sets the text color.
2366     *
2367     * @see #setTextColor(int)
2368     * @see #getTextColors()
2369     * @see #setHintTextColor(ColorStateList)
2370     * @see #setLinkTextColor(ColorStateList)
2371     *
2372     * @attr ref android.R.styleable#TextView_textColor
2373     */
2374    public void setTextColor(ColorStateList colors) {
2375        if (colors == null) {
2376            throw new NullPointerException();
2377        }
2378
2379        mTextColor = colors;
2380        updateTextColors();
2381    }
2382
2383    /**
2384     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
2385     *
2386     * @see #setTextColor(ColorStateList)
2387     * @see #setTextColor(int)
2388     *
2389     * @attr ref android.R.styleable#TextView_textColor
2390     */
2391    public final ColorStateList getTextColors() {
2392        return mTextColor;
2393    }
2394
2395    /**
2396     * <p>Return the current color selected for normal text.</p>
2397     *
2398     * @return Returns the current text color.
2399     */
2400    public final int getCurrentTextColor() {
2401        return mCurTextColor;
2402    }
2403
2404    /**
2405     * Sets the color used to display the selection highlight.
2406     *
2407     * @attr ref android.R.styleable#TextView_textColorHighlight
2408     */
2409    @android.view.RemotableViewMethod
2410    public void setHighlightColor(int color) {
2411        if (mHighlightColor != color) {
2412            mHighlightColor = color;
2413            invalidate();
2414        }
2415    }
2416
2417    /**
2418     * @return the color used to display the selection highlight
2419     *
2420     * @see #setHighlightColor(int)
2421     *
2422     * @attr ref android.R.styleable#TextView_textColorHighlight
2423     */
2424    public int getHighlightColor() {
2425        return mHighlightColor;
2426    }
2427
2428    /**
2429     * Sets whether the soft input method will be made visible when this
2430     * TextView gets focused. The default is true.
2431     * @hide
2432     */
2433    @android.view.RemotableViewMethod
2434    public final void setShowSoftInputOnFocus(boolean show) {
2435        createEditorIfNeeded();
2436        mEditor.mShowSoftInputOnFocus = show;
2437    }
2438
2439    /**
2440     * Returns whether the soft input method will be made visible when this
2441     * TextView gets focused. The default is true.
2442     * @hide
2443     */
2444    public final boolean getShowSoftInputOnFocus() {
2445        // When there is no Editor, return default true value
2446        return mEditor == null || mEditor.mShowSoftInputOnFocus;
2447    }
2448
2449    /**
2450     * Gives the text a shadow of the specified radius and color, the specified
2451     * distance from its normal position.
2452     *
2453     * @attr ref android.R.styleable#TextView_shadowColor
2454     * @attr ref android.R.styleable#TextView_shadowDx
2455     * @attr ref android.R.styleable#TextView_shadowDy
2456     * @attr ref android.R.styleable#TextView_shadowRadius
2457     */
2458    public void setShadowLayer(float radius, float dx, float dy, int color) {
2459        mTextPaint.setShadowLayer(radius, dx, dy, color);
2460
2461        mShadowRadius = radius;
2462        mShadowDx = dx;
2463        mShadowDy = dy;
2464
2465        // Will change text clip region
2466        if (mEditor != null) mEditor.invalidateTextDisplayList();
2467        invalidate();
2468    }
2469
2470    /**
2471     * Gets the radius of the shadow layer.
2472     *
2473     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
2474     *
2475     * @see #setShadowLayer(float, float, float, int)
2476     *
2477     * @attr ref android.R.styleable#TextView_shadowRadius
2478     */
2479    public float getShadowRadius() {
2480        return mShadowRadius;
2481    }
2482
2483    /**
2484     * @return the horizontal offset of the shadow layer
2485     *
2486     * @see #setShadowLayer(float, float, float, int)
2487     *
2488     * @attr ref android.R.styleable#TextView_shadowDx
2489     */
2490    public float getShadowDx() {
2491        return mShadowDx;
2492    }
2493
2494    /**
2495     * @return the vertical offset of the shadow layer
2496     *
2497     * @see #setShadowLayer(float, float, float, int)
2498     *
2499     * @attr ref android.R.styleable#TextView_shadowDy
2500     */
2501    public float getShadowDy() {
2502        return mShadowDy;
2503    }
2504
2505    /**
2506     * @return the color of the shadow layer
2507     *
2508     * @see #setShadowLayer(float, float, float, int)
2509     *
2510     * @attr ref android.R.styleable#TextView_shadowColor
2511     */
2512    public int getShadowColor() {
2513        return mTextPaint.shadowColor;
2514    }
2515
2516    /**
2517     * @return the base paint used for the text.  Please use this only to
2518     * consult the Paint's properties and not to change them.
2519     */
2520    public TextPaint getPaint() {
2521        return mTextPaint;
2522    }
2523
2524    /**
2525     * Sets the autolink mask of the text.  See {@link
2526     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2527     * possible values.
2528     *
2529     * @attr ref android.R.styleable#TextView_autoLink
2530     */
2531    @android.view.RemotableViewMethod
2532    public final void setAutoLinkMask(int mask) {
2533        mAutoLinkMask = mask;
2534    }
2535
2536    /**
2537     * Sets whether the movement method will automatically be set to
2538     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2539     * set to nonzero and links are detected in {@link #setText}.
2540     * The default is true.
2541     *
2542     * @attr ref android.R.styleable#TextView_linksClickable
2543     */
2544    @android.view.RemotableViewMethod
2545    public final void setLinksClickable(boolean whether) {
2546        mLinksClickable = whether;
2547    }
2548
2549    /**
2550     * Returns whether the movement method will automatically be set to
2551     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2552     * set to nonzero and links are detected in {@link #setText}.
2553     * The default is true.
2554     *
2555     * @attr ref android.R.styleable#TextView_linksClickable
2556     */
2557    public final boolean getLinksClickable() {
2558        return mLinksClickable;
2559    }
2560
2561    /**
2562     * Returns the list of URLSpans attached to the text
2563     * (by {@link Linkify} or otherwise) if any.  You can call
2564     * {@link URLSpan#getURL} on them to find where they link to
2565     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
2566     * to find the region of the text they are attached to.
2567     */
2568    public URLSpan[] getUrls() {
2569        if (mText instanceof Spanned) {
2570            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
2571        } else {
2572            return new URLSpan[0];
2573        }
2574    }
2575
2576    /**
2577     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
2578     * TextView.
2579     *
2580     * @see #setHintTextColor(ColorStateList)
2581     * @see #getHintTextColors()
2582     * @see #setTextColor(int)
2583     *
2584     * @attr ref android.R.styleable#TextView_textColorHint
2585     */
2586    @android.view.RemotableViewMethod
2587    public final void setHintTextColor(int color) {
2588        mHintTextColor = ColorStateList.valueOf(color);
2589        updateTextColors();
2590    }
2591
2592    /**
2593     * Sets the color of the hint text.
2594     *
2595     * @see #getHintTextColors()
2596     * @see #setHintTextColor(int)
2597     * @see #setTextColor(ColorStateList)
2598     * @see #setLinkTextColor(ColorStateList)
2599     *
2600     * @attr ref android.R.styleable#TextView_textColorHint
2601     */
2602    public final void setHintTextColor(ColorStateList colors) {
2603        mHintTextColor = colors;
2604        updateTextColors();
2605    }
2606
2607    /**
2608     * @return the color of the hint text, for the different states of this TextView.
2609     *
2610     * @see #setHintTextColor(ColorStateList)
2611     * @see #setHintTextColor(int)
2612     * @see #setTextColor(ColorStateList)
2613     * @see #setLinkTextColor(ColorStateList)
2614     *
2615     * @attr ref android.R.styleable#TextView_textColorHint
2616     */
2617    public final ColorStateList getHintTextColors() {
2618        return mHintTextColor;
2619    }
2620
2621    /**
2622     * <p>Return the current color selected to paint the hint text.</p>
2623     *
2624     * @return Returns the current hint text color.
2625     */
2626    public final int getCurrentHintTextColor() {
2627        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
2628    }
2629
2630    /**
2631     * Sets the color of links in the text.
2632     *
2633     * @see #setLinkTextColor(ColorStateList)
2634     * @see #getLinkTextColors()
2635     *
2636     * @attr ref android.R.styleable#TextView_textColorLink
2637     */
2638    @android.view.RemotableViewMethod
2639    public final void setLinkTextColor(int color) {
2640        mLinkTextColor = ColorStateList.valueOf(color);
2641        updateTextColors();
2642    }
2643
2644    /**
2645     * Sets the color of links in the text.
2646     *
2647     * @see #setLinkTextColor(int)
2648     * @see #getLinkTextColors()
2649     * @see #setTextColor(ColorStateList)
2650     * @see #setHintTextColor(ColorStateList)
2651     *
2652     * @attr ref android.R.styleable#TextView_textColorLink
2653     */
2654    public final void setLinkTextColor(ColorStateList colors) {
2655        mLinkTextColor = colors;
2656        updateTextColors();
2657    }
2658
2659    /**
2660     * @return the list of colors used to paint the links in the text, for the different states of
2661     * this TextView
2662     *
2663     * @see #setLinkTextColor(ColorStateList)
2664     * @see #setLinkTextColor(int)
2665     *
2666     * @attr ref android.R.styleable#TextView_textColorLink
2667     */
2668    public final ColorStateList getLinkTextColors() {
2669        return mLinkTextColor;
2670    }
2671
2672    /**
2673     * Sets the horizontal alignment of the text and the
2674     * vertical gravity that will be used when there is extra space
2675     * in the TextView beyond what is required for the text itself.
2676     *
2677     * @see android.view.Gravity
2678     * @attr ref android.R.styleable#TextView_gravity
2679     */
2680    public void setGravity(int gravity) {
2681        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
2682            gravity |= Gravity.START;
2683        }
2684        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
2685            gravity |= Gravity.TOP;
2686        }
2687
2688        boolean newLayout = false;
2689
2690        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
2691            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
2692            newLayout = true;
2693        }
2694
2695        if (gravity != mGravity) {
2696            invalidate();
2697            mLayoutAlignment = null;
2698        }
2699
2700        mGravity = gravity;
2701
2702        if (mLayout != null && newLayout) {
2703            // XXX this is heavy-handed because no actual content changes.
2704            int want = mLayout.getWidth();
2705            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
2706
2707            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
2708                          mRight - mLeft - getCompoundPaddingLeft() -
2709                          getCompoundPaddingRight(), true);
2710        }
2711    }
2712
2713    /**
2714     * Returns the horizontal and vertical alignment of this TextView.
2715     *
2716     * @see android.view.Gravity
2717     * @attr ref android.R.styleable#TextView_gravity
2718     */
2719    public int getGravity() {
2720        return mGravity;
2721    }
2722
2723    /**
2724     * @return the flags on the Paint being used to display the text.
2725     * @see Paint#getFlags
2726     */
2727    public int getPaintFlags() {
2728        return mTextPaint.getFlags();
2729    }
2730
2731    /**
2732     * Sets flags on the Paint being used to display the text and
2733     * reflows the text if they are different from the old flags.
2734     * @see Paint#setFlags
2735     */
2736    @android.view.RemotableViewMethod
2737    public void setPaintFlags(int flags) {
2738        if (mTextPaint.getFlags() != flags) {
2739            mTextPaint.setFlags(flags);
2740
2741            if (mLayout != null) {
2742                nullLayouts();
2743                requestLayout();
2744                invalidate();
2745            }
2746        }
2747    }
2748
2749    /**
2750     * Sets whether the text should be allowed to be wider than the
2751     * View is.  If false, it will be wrapped to the width of the View.
2752     *
2753     * @attr ref android.R.styleable#TextView_scrollHorizontally
2754     */
2755    public void setHorizontallyScrolling(boolean whether) {
2756        if (mHorizontallyScrolling != whether) {
2757            mHorizontallyScrolling = whether;
2758
2759            if (mLayout != null) {
2760                nullLayouts();
2761                requestLayout();
2762                invalidate();
2763            }
2764        }
2765    }
2766
2767    /**
2768     * Returns whether the text is allowed to be wider than the View is.
2769     * If false, the text will be wrapped to the width of the View.
2770     *
2771     * @attr ref android.R.styleable#TextView_scrollHorizontally
2772     * @hide
2773     */
2774    public boolean getHorizontallyScrolling() {
2775        return mHorizontallyScrolling;
2776    }
2777
2778    /**
2779     * Makes the TextView at least this many lines tall.
2780     *
2781     * Setting this value overrides any other (minimum) height setting. A single line TextView will
2782     * set this value to 1.
2783     *
2784     * @see #getMinLines()
2785     *
2786     * @attr ref android.R.styleable#TextView_minLines
2787     */
2788    @android.view.RemotableViewMethod
2789    public void setMinLines(int minlines) {
2790        mMinimum = minlines;
2791        mMinMode = LINES;
2792
2793        requestLayout();
2794        invalidate();
2795    }
2796
2797    /**
2798     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
2799     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
2800     *
2801     * @see #setMinLines(int)
2802     *
2803     * @attr ref android.R.styleable#TextView_minLines
2804     */
2805    public int getMinLines() {
2806        return mMinMode == LINES ? mMinimum : -1;
2807    }
2808
2809    /**
2810     * Makes the TextView at least this many pixels tall.
2811     *
2812     * Setting this value overrides any other (minimum) number of lines setting.
2813     *
2814     * @attr ref android.R.styleable#TextView_minHeight
2815     */
2816    @android.view.RemotableViewMethod
2817    public void setMinHeight(int minHeight) {
2818        mMinimum = minHeight;
2819        mMinMode = PIXELS;
2820
2821        requestLayout();
2822        invalidate();
2823    }
2824
2825    /**
2826     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
2827     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
2828     *
2829     * @see #setMinHeight(int)
2830     *
2831     * @attr ref android.R.styleable#TextView_minHeight
2832     */
2833    public int getMinHeight() {
2834        return mMinMode == PIXELS ? mMinimum : -1;
2835    }
2836
2837    /**
2838     * Makes the TextView at most this many lines tall.
2839     *
2840     * Setting this value overrides any other (maximum) height setting.
2841     *
2842     * @attr ref android.R.styleable#TextView_maxLines
2843     */
2844    @android.view.RemotableViewMethod
2845    public void setMaxLines(int maxlines) {
2846        mMaximum = maxlines;
2847        mMaxMode = LINES;
2848
2849        requestLayout();
2850        invalidate();
2851    }
2852
2853    /**
2854     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
2855     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
2856     *
2857     * @see #setMaxLines(int)
2858     *
2859     * @attr ref android.R.styleable#TextView_maxLines
2860     */
2861    public int getMaxLines() {
2862        return mMaxMode == LINES ? mMaximum : -1;
2863    }
2864
2865    /**
2866     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
2867     * {@link #setMaxLines(int)} method.
2868     *
2869     * Setting this value overrides any other (maximum) number of lines setting.
2870     *
2871     * @attr ref android.R.styleable#TextView_maxHeight
2872     */
2873    @android.view.RemotableViewMethod
2874    public void setMaxHeight(int maxHeight) {
2875        mMaximum = maxHeight;
2876        mMaxMode = PIXELS;
2877
2878        requestLayout();
2879        invalidate();
2880    }
2881
2882    /**
2883     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
2884     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
2885     *
2886     * @see #setMaxHeight(int)
2887     *
2888     * @attr ref android.R.styleable#TextView_maxHeight
2889     */
2890    public int getMaxHeight() {
2891        return mMaxMode == PIXELS ? mMaximum : -1;
2892    }
2893
2894    /**
2895     * Makes the TextView exactly this many lines tall.
2896     *
2897     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2898     * height setting. A single line TextView will set this value to 1.
2899     *
2900     * @attr ref android.R.styleable#TextView_lines
2901     */
2902    @android.view.RemotableViewMethod
2903    public void setLines(int lines) {
2904        mMaximum = mMinimum = lines;
2905        mMaxMode = mMinMode = LINES;
2906
2907        requestLayout();
2908        invalidate();
2909    }
2910
2911    /**
2912     * Makes the TextView exactly this many pixels tall.
2913     * You could do the same thing by specifying this number in the
2914     * LayoutParams.
2915     *
2916     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2917     * height setting.
2918     *
2919     * @attr ref android.R.styleable#TextView_height
2920     */
2921    @android.view.RemotableViewMethod
2922    public void setHeight(int pixels) {
2923        mMaximum = mMinimum = pixels;
2924        mMaxMode = mMinMode = PIXELS;
2925
2926        requestLayout();
2927        invalidate();
2928    }
2929
2930    /**
2931     * Makes the TextView at least this many ems wide
2932     *
2933     * @attr ref android.R.styleable#TextView_minEms
2934     */
2935    @android.view.RemotableViewMethod
2936    public void setMinEms(int minems) {
2937        mMinWidth = minems;
2938        mMinWidthMode = EMS;
2939
2940        requestLayout();
2941        invalidate();
2942    }
2943
2944    /**
2945     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
2946     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
2947     *
2948     * @see #setMinEms(int)
2949     * @see #setEms(int)
2950     *
2951     * @attr ref android.R.styleable#TextView_minEms
2952     */
2953    public int getMinEms() {
2954        return mMinWidthMode == EMS ? mMinWidth : -1;
2955    }
2956
2957    /**
2958     * Makes the TextView at least this many pixels wide
2959     *
2960     * @attr ref android.R.styleable#TextView_minWidth
2961     */
2962    @android.view.RemotableViewMethod
2963    public void setMinWidth(int minpixels) {
2964        mMinWidth = minpixels;
2965        mMinWidthMode = PIXELS;
2966
2967        requestLayout();
2968        invalidate();
2969    }
2970
2971    /**
2972     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
2973     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
2974     *
2975     * @see #setMinWidth(int)
2976     * @see #setWidth(int)
2977     *
2978     * @attr ref android.R.styleable#TextView_minWidth
2979     */
2980    public int getMinWidth() {
2981        return mMinWidthMode == PIXELS ? mMinWidth : -1;
2982    }
2983
2984    /**
2985     * Makes the TextView at most this many ems wide
2986     *
2987     * @attr ref android.R.styleable#TextView_maxEms
2988     */
2989    @android.view.RemotableViewMethod
2990    public void setMaxEms(int maxems) {
2991        mMaxWidth = maxems;
2992        mMaxWidthMode = EMS;
2993
2994        requestLayout();
2995        invalidate();
2996    }
2997
2998    /**
2999     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3000     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3001     *
3002     * @see #setMaxEms(int)
3003     * @see #setEms(int)
3004     *
3005     * @attr ref android.R.styleable#TextView_maxEms
3006     */
3007    public int getMaxEms() {
3008        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3009    }
3010
3011    /**
3012     * Makes the TextView at most this many pixels wide
3013     *
3014     * @attr ref android.R.styleable#TextView_maxWidth
3015     */
3016    @android.view.RemotableViewMethod
3017    public void setMaxWidth(int maxpixels) {
3018        mMaxWidth = maxpixels;
3019        mMaxWidthMode = PIXELS;
3020
3021        requestLayout();
3022        invalidate();
3023    }
3024
3025    /**
3026     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3027     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3028     *
3029     * @see #setMaxWidth(int)
3030     * @see #setWidth(int)
3031     *
3032     * @attr ref android.R.styleable#TextView_maxWidth
3033     */
3034    public int getMaxWidth() {
3035        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3036    }
3037
3038    /**
3039     * Makes the TextView exactly this many ems wide
3040     *
3041     * @see #setMaxEms(int)
3042     * @see #setMinEms(int)
3043     * @see #getMinEms()
3044     * @see #getMaxEms()
3045     *
3046     * @attr ref android.R.styleable#TextView_ems
3047     */
3048    @android.view.RemotableViewMethod
3049    public void setEms(int ems) {
3050        mMaxWidth = mMinWidth = ems;
3051        mMaxWidthMode = mMinWidthMode = EMS;
3052
3053        requestLayout();
3054        invalidate();
3055    }
3056
3057    /**
3058     * Makes the TextView exactly this many pixels wide.
3059     * You could do the same thing by specifying this number in the
3060     * LayoutParams.
3061     *
3062     * @see #setMaxWidth(int)
3063     * @see #setMinWidth(int)
3064     * @see #getMinWidth()
3065     * @see #getMaxWidth()
3066     *
3067     * @attr ref android.R.styleable#TextView_width
3068     */
3069    @android.view.RemotableViewMethod
3070    public void setWidth(int pixels) {
3071        mMaxWidth = mMinWidth = pixels;
3072        mMaxWidthMode = mMinWidthMode = PIXELS;
3073
3074        requestLayout();
3075        invalidate();
3076    }
3077
3078    /**
3079     * Sets line spacing for this TextView.  Each line will have its height
3080     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3081     *
3082     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3083     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3084     */
3085    public void setLineSpacing(float add, float mult) {
3086        if (mSpacingAdd != add || mSpacingMult != mult) {
3087            mSpacingAdd = add;
3088            mSpacingMult = mult;
3089
3090            if (mLayout != null) {
3091                nullLayouts();
3092                requestLayout();
3093                invalidate();
3094            }
3095        }
3096    }
3097
3098    /**
3099     * Gets the line spacing multiplier
3100     *
3101     * @return the value by which each line's height is multiplied to get its actual height.
3102     *
3103     * @see #setLineSpacing(float, float)
3104     * @see #getLineSpacingExtra()
3105     *
3106     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3107     */
3108    public float getLineSpacingMultiplier() {
3109        return mSpacingMult;
3110    }
3111
3112    /**
3113     * Gets the line spacing extra space
3114     *
3115     * @return the extra space that is added to the height of each lines of this TextView.
3116     *
3117     * @see #setLineSpacing(float, float)
3118     * @see #getLineSpacingMultiplier()
3119     *
3120     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3121     */
3122    public float getLineSpacingExtra() {
3123        return mSpacingAdd;
3124    }
3125
3126    /**
3127     * Convenience method: Append the specified text to the TextView's
3128     * display buffer, upgrading it to BufferType.EDITABLE if it was
3129     * not already editable.
3130     */
3131    public final void append(CharSequence text) {
3132        append(text, 0, text.length());
3133    }
3134
3135    /**
3136     * Convenience method: Append the specified text slice to the TextView's
3137     * display buffer, upgrading it to BufferType.EDITABLE if it was
3138     * not already editable.
3139     */
3140    public void append(CharSequence text, int start, int end) {
3141        if (!(mText instanceof Editable)) {
3142            setText(mText, BufferType.EDITABLE);
3143        }
3144
3145        ((Editable) mText).append(text, start, end);
3146    }
3147
3148    private void updateTextColors() {
3149        boolean inval = false;
3150        int color = mTextColor.getColorForState(getDrawableState(), 0);
3151        if (color != mCurTextColor) {
3152            mCurTextColor = color;
3153            inval = true;
3154        }
3155        if (mLinkTextColor != null) {
3156            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
3157            if (color != mTextPaint.linkColor) {
3158                mTextPaint.linkColor = color;
3159                inval = true;
3160            }
3161        }
3162        if (mHintTextColor != null) {
3163            color = mHintTextColor.getColorForState(getDrawableState(), 0);
3164            if (color != mCurHintTextColor && mText.length() == 0) {
3165                mCurHintTextColor = color;
3166                inval = true;
3167            }
3168        }
3169        if (inval) {
3170            // Text needs to be redrawn with the new color
3171            if (mEditor != null) mEditor.invalidateTextDisplayList();
3172            invalidate();
3173        }
3174    }
3175
3176    @Override
3177    protected void drawableStateChanged() {
3178        super.drawableStateChanged();
3179        if (mTextColor != null && mTextColor.isStateful()
3180                || (mHintTextColor != null && mHintTextColor.isStateful())
3181                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
3182            updateTextColors();
3183        }
3184
3185        final Drawables dr = mDrawables;
3186        if (dr != null) {
3187            int[] state = getDrawableState();
3188            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
3189                dr.mDrawableTop.setState(state);
3190            }
3191            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
3192                dr.mDrawableBottom.setState(state);
3193            }
3194            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
3195                dr.mDrawableLeft.setState(state);
3196            }
3197            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
3198                dr.mDrawableRight.setState(state);
3199            }
3200            if (dr.mDrawableStart != null && dr.mDrawableStart.isStateful()) {
3201                dr.mDrawableStart.setState(state);
3202            }
3203            if (dr.mDrawableEnd != null && dr.mDrawableEnd.isStateful()) {
3204                dr.mDrawableEnd.setState(state);
3205            }
3206        }
3207    }
3208
3209    @Override
3210    public Parcelable onSaveInstanceState() {
3211        Parcelable superState = super.onSaveInstanceState();
3212
3213        // Save state if we are forced to
3214        boolean save = mFreezesText;
3215        int start = 0;
3216        int end = 0;
3217
3218        if (mText != null) {
3219            start = getSelectionStart();
3220            end = getSelectionEnd();
3221            if (start >= 0 || end >= 0) {
3222                // Or save state if there is a selection
3223                save = true;
3224            }
3225        }
3226
3227        if (save) {
3228            SavedState ss = new SavedState(superState);
3229            // XXX Should also save the current scroll position!
3230            ss.selStart = start;
3231            ss.selEnd = end;
3232
3233            if (mText instanceof Spanned) {
3234                /*
3235                 * Calling setText() strips off any ChangeWatchers;
3236                 * strip them now to avoid leaking references.
3237                 * But do it to a copy so that if there are any
3238                 * further changes to the text of this view, it
3239                 * won't get into an inconsistent state.
3240                 */
3241
3242                Spannable sp = new SpannableString(mText);
3243
3244                for (ChangeWatcher cw : sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
3245                    sp.removeSpan(cw);
3246                }
3247
3248                if (mEditor != null) {
3249                    removeMisspelledSpans(sp);
3250                    sp.removeSpan(mEditor.mSuggestionRangeSpan);
3251                }
3252
3253                ss.text = sp;
3254            } else {
3255                ss.text = mText.toString();
3256            }
3257
3258            if (isFocused() && start >= 0 && end >= 0) {
3259                ss.frozenWithFocus = true;
3260            }
3261
3262            ss.error = getError();
3263
3264            return ss;
3265        }
3266
3267        return superState;
3268    }
3269
3270    void removeMisspelledSpans(Spannable spannable) {
3271        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
3272                SuggestionSpan.class);
3273        for (int i = 0; i < suggestionSpans.length; i++) {
3274            int flags = suggestionSpans[i].getFlags();
3275            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
3276                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
3277                spannable.removeSpan(suggestionSpans[i]);
3278            }
3279        }
3280    }
3281
3282    @Override
3283    public void onRestoreInstanceState(Parcelable state) {
3284        if (!(state instanceof SavedState)) {
3285            super.onRestoreInstanceState(state);
3286            return;
3287        }
3288
3289        SavedState ss = (SavedState)state;
3290        super.onRestoreInstanceState(ss.getSuperState());
3291
3292        // XXX restore buffer type too, as well as lots of other stuff
3293        if (ss.text != null) {
3294            setText(ss.text);
3295        }
3296
3297        if (ss.selStart >= 0 && ss.selEnd >= 0) {
3298            if (mText instanceof Spannable) {
3299                int len = mText.length();
3300
3301                if (ss.selStart > len || ss.selEnd > len) {
3302                    String restored = "";
3303
3304                    if (ss.text != null) {
3305                        restored = "(restored) ";
3306                    }
3307
3308                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
3309                          "/" + ss.selEnd + " out of range for " + restored +
3310                          "text " + mText);
3311                } else {
3312                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
3313
3314                    if (ss.frozenWithFocus) {
3315                        createEditorIfNeeded();
3316                        mEditor.mFrozenWithFocus = true;
3317                    }
3318                }
3319            }
3320        }
3321
3322        if (ss.error != null) {
3323            final CharSequence error = ss.error;
3324            // Display the error later, after the first layout pass
3325            post(new Runnable() {
3326                public void run() {
3327                    setError(error);
3328                }
3329            });
3330        }
3331    }
3332
3333    /**
3334     * Control whether this text view saves its entire text contents when
3335     * freezing to an icicle, in addition to dynamic state such as cursor
3336     * position.  By default this is false, not saving the text.  Set to true
3337     * if the text in the text view is not being saved somewhere else in
3338     * persistent storage (such as in a content provider) so that if the
3339     * view is later thawed the user will not lose their data.
3340     *
3341     * @param freezesText Controls whether a frozen icicle should include the
3342     * entire text data: true to include it, false to not.
3343     *
3344     * @attr ref android.R.styleable#TextView_freezesText
3345     */
3346    @android.view.RemotableViewMethod
3347    public void setFreezesText(boolean freezesText) {
3348        mFreezesText = freezesText;
3349    }
3350
3351    /**
3352     * Return whether this text view is including its entire text contents
3353     * in frozen icicles.
3354     *
3355     * @return Returns true if text is included, false if it isn't.
3356     *
3357     * @see #setFreezesText
3358     */
3359    public boolean getFreezesText() {
3360        return mFreezesText;
3361    }
3362
3363    ///////////////////////////////////////////////////////////////////////////
3364
3365    /**
3366     * Sets the Factory used to create new Editables.
3367     */
3368    public final void setEditableFactory(Editable.Factory factory) {
3369        mEditableFactory = factory;
3370        setText(mText);
3371    }
3372
3373    /**
3374     * Sets the Factory used to create new Spannables.
3375     */
3376    public final void setSpannableFactory(Spannable.Factory factory) {
3377        mSpannableFactory = factory;
3378        setText(mText);
3379    }
3380
3381    /**
3382     * Sets the string value of the TextView. TextView <em>does not</em> accept
3383     * HTML-like formatting, which you can do with text strings in XML resource files.
3384     * To style your strings, attach android.text.style.* objects to a
3385     * {@link android.text.SpannableString SpannableString}, or see the
3386     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
3387     * Available Resource Types</a> documentation for an example of setting
3388     * formatted text in the XML resource file.
3389     *
3390     * @attr ref android.R.styleable#TextView_text
3391     */
3392    @android.view.RemotableViewMethod
3393    public final void setText(CharSequence text) {
3394        setText(text, mBufferType);
3395    }
3396
3397    /**
3398     * Like {@link #setText(CharSequence)},
3399     * except that the cursor position (if any) is retained in the new text.
3400     *
3401     * @param text The new text to place in the text view.
3402     *
3403     * @see #setText(CharSequence)
3404     */
3405    @android.view.RemotableViewMethod
3406    public final void setTextKeepState(CharSequence text) {
3407        setTextKeepState(text, mBufferType);
3408    }
3409
3410    /**
3411     * Sets the text that this TextView is to display (see
3412     * {@link #setText(CharSequence)}) and also sets whether it is stored
3413     * in a styleable/spannable buffer and whether it is editable.
3414     *
3415     * @attr ref android.R.styleable#TextView_text
3416     * @attr ref android.R.styleable#TextView_bufferType
3417     */
3418    public void setText(CharSequence text, BufferType type) {
3419        setText(text, type, true, 0);
3420
3421        if (mCharWrapper != null) {
3422            mCharWrapper.mChars = null;
3423        }
3424    }
3425
3426    private void setText(CharSequence text, BufferType type,
3427                         boolean notifyBefore, int oldlen) {
3428        if (text == null) {
3429            text = "";
3430        }
3431
3432        // If suggestions are not enabled, remove the suggestion spans from the text
3433        if (!isSuggestionsEnabled()) {
3434            text = removeSuggestionSpans(text);
3435        }
3436
3437        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
3438
3439        if (text instanceof Spanned &&
3440            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
3441            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
3442                setHorizontalFadingEdgeEnabled(true);
3443                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
3444            } else {
3445                setHorizontalFadingEdgeEnabled(false);
3446                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
3447            }
3448            setEllipsize(TextUtils.TruncateAt.MARQUEE);
3449        }
3450
3451        int n = mFilters.length;
3452        for (int i = 0; i < n; i++) {
3453            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
3454            if (out != null) {
3455                text = out;
3456            }
3457        }
3458
3459        if (notifyBefore) {
3460            if (mText != null) {
3461                oldlen = mText.length();
3462                sendBeforeTextChanged(mText, 0, oldlen, text.length());
3463            } else {
3464                sendBeforeTextChanged("", 0, 0, text.length());
3465            }
3466        }
3467
3468        boolean needEditableForNotification = false;
3469
3470        if (mListeners != null && mListeners.size() != 0) {
3471            needEditableForNotification = true;
3472        }
3473
3474        if (type == BufferType.EDITABLE || getKeyListener() != null ||
3475                needEditableForNotification) {
3476            createEditorIfNeeded();
3477            Editable t = mEditableFactory.newEditable(text);
3478            text = t;
3479            setFilters(t, mFilters);
3480            InputMethodManager imm = InputMethodManager.peekInstance();
3481            if (imm != null) imm.restartInput(this);
3482        } else if (type == BufferType.SPANNABLE || mMovement != null) {
3483            text = mSpannableFactory.newSpannable(text);
3484        } else if (!(text instanceof CharWrapper)) {
3485            text = TextUtils.stringOrSpannedString(text);
3486        }
3487
3488        if (mAutoLinkMask != 0) {
3489            Spannable s2;
3490
3491            if (type == BufferType.EDITABLE || text instanceof Spannable) {
3492                s2 = (Spannable) text;
3493            } else {
3494                s2 = mSpannableFactory.newSpannable(text);
3495            }
3496
3497            if (Linkify.addLinks(s2, mAutoLinkMask)) {
3498                text = s2;
3499                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
3500
3501                /*
3502                 * We must go ahead and set the text before changing the
3503                 * movement method, because setMovementMethod() may call
3504                 * setText() again to try to upgrade the buffer type.
3505                 */
3506                mText = text;
3507
3508                // Do not change the movement method for text that support text selection as it
3509                // would prevent an arbitrary cursor displacement.
3510                if (mLinksClickable && !textCanBeSelected()) {
3511                    setMovementMethod(LinkMovementMethod.getInstance());
3512                }
3513            }
3514        }
3515
3516        mBufferType = type;
3517        mText = text;
3518
3519        if (mTransformation == null) {
3520            mTransformed = text;
3521        } else {
3522            mTransformed = mTransformation.getTransformation(text, this);
3523        }
3524
3525        final int textLength = text.length();
3526
3527        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
3528            Spannable sp = (Spannable) text;
3529
3530            // Remove any ChangeWatchers that might have come from other TextViews.
3531            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
3532            final int count = watchers.length;
3533            for (int i = 0; i < count; i++) {
3534                sp.removeSpan(watchers[i]);
3535            }
3536
3537            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
3538
3539            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
3540                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
3541
3542            if (mEditor != null) mEditor.addSpanWatchers(sp);
3543
3544            if (mTransformation != null) {
3545                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
3546            }
3547
3548            if (mMovement != null) {
3549                mMovement.initialize(this, (Spannable) text);
3550
3551                /*
3552                 * Initializing the movement method will have set the
3553                 * selection, so reset mSelectionMoved to keep that from
3554                 * interfering with the normal on-focus selection-setting.
3555                 */
3556                if (mEditor != null) mEditor.mSelectionMoved = false;
3557            }
3558        }
3559
3560        if (mLayout != null) {
3561            checkForRelayout();
3562        }
3563
3564        sendOnTextChanged(text, 0, oldlen, textLength);
3565        onTextChanged(text, 0, oldlen, textLength);
3566
3567        if (needEditableForNotification) {
3568            sendAfterTextChanged((Editable) text);
3569        }
3570
3571        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
3572        if (mEditor != null) mEditor.prepareCursorControllers();
3573    }
3574
3575    /**
3576     * Sets the TextView to display the specified slice of the specified
3577     * char array.  You must promise that you will not change the contents
3578     * of the array except for right before another call to setText(),
3579     * since the TextView has no way to know that the text
3580     * has changed and that it needs to invalidate and re-layout.
3581     */
3582    public final void setText(char[] text, int start, int len) {
3583        int oldlen = 0;
3584
3585        if (start < 0 || len < 0 || start + len > text.length) {
3586            throw new IndexOutOfBoundsException(start + ", " + len);
3587        }
3588
3589        /*
3590         * We must do the before-notification here ourselves because if
3591         * the old text is a CharWrapper we destroy it before calling
3592         * into the normal path.
3593         */
3594        if (mText != null) {
3595            oldlen = mText.length();
3596            sendBeforeTextChanged(mText, 0, oldlen, len);
3597        } else {
3598            sendBeforeTextChanged("", 0, 0, len);
3599        }
3600
3601        if (mCharWrapper == null) {
3602            mCharWrapper = new CharWrapper(text, start, len);
3603        } else {
3604            mCharWrapper.set(text, start, len);
3605        }
3606
3607        setText(mCharWrapper, mBufferType, false, oldlen);
3608    }
3609
3610    /**
3611     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
3612     * except that the cursor position (if any) is retained in the new text.
3613     *
3614     * @see #setText(CharSequence, android.widget.TextView.BufferType)
3615     */
3616    public final void setTextKeepState(CharSequence text, BufferType type) {
3617        int start = getSelectionStart();
3618        int end = getSelectionEnd();
3619        int len = text.length();
3620
3621        setText(text, type);
3622
3623        if (start >= 0 || end >= 0) {
3624            if (mText instanceof Spannable) {
3625                Selection.setSelection((Spannable) mText,
3626                                       Math.max(0, Math.min(start, len)),
3627                                       Math.max(0, Math.min(end, len)));
3628            }
3629        }
3630    }
3631
3632    @android.view.RemotableViewMethod
3633    public final void setText(int resid) {
3634        setText(getContext().getResources().getText(resid));
3635    }
3636
3637    public final void setText(int resid, BufferType type) {
3638        setText(getContext().getResources().getText(resid), type);
3639    }
3640
3641    /**
3642     * Sets the text to be displayed when the text of the TextView is empty.
3643     * Null means to use the normal empty text. The hint does not currently
3644     * participate in determining the size of the view.
3645     *
3646     * @attr ref android.R.styleable#TextView_hint
3647     */
3648    @android.view.RemotableViewMethod
3649    public final void setHint(CharSequence hint) {
3650        mHint = TextUtils.stringOrSpannedString(hint);
3651
3652        if (mLayout != null) {
3653            checkForRelayout();
3654        }
3655
3656        if (mText.length() == 0) {
3657            invalidate();
3658        }
3659
3660        // Invalidate display list if hint is currently used
3661        if (mEditor != null && mText.length() == 0 && mHint != null) {
3662            mEditor.invalidateTextDisplayList();
3663        }
3664    }
3665
3666    /**
3667     * Sets the text to be displayed when the text of the TextView is empty,
3668     * from a resource.
3669     *
3670     * @attr ref android.R.styleable#TextView_hint
3671     */
3672    @android.view.RemotableViewMethod
3673    public final void setHint(int resid) {
3674        setHint(getContext().getResources().getText(resid));
3675    }
3676
3677    /**
3678     * Returns the hint that is displayed when the text of the TextView
3679     * is empty.
3680     *
3681     * @attr ref android.R.styleable#TextView_hint
3682     */
3683    @ViewDebug.CapturedViewProperty
3684    public CharSequence getHint() {
3685        return mHint;
3686    }
3687
3688    boolean isSingleLine() {
3689        return mSingleLine;
3690    }
3691
3692    private static boolean isMultilineInputType(int type) {
3693        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
3694            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
3695    }
3696
3697    /**
3698     * Removes the suggestion spans.
3699     */
3700    CharSequence removeSuggestionSpans(CharSequence text) {
3701       if (text instanceof Spanned) {
3702           Spannable spannable;
3703           if (text instanceof Spannable) {
3704               spannable = (Spannable) text;
3705           } else {
3706               spannable = new SpannableString(text);
3707               text = spannable;
3708           }
3709
3710           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
3711           for (int i = 0; i < spans.length; i++) {
3712               spannable.removeSpan(spans[i]);
3713           }
3714       }
3715       return text;
3716    }
3717
3718    /**
3719     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
3720     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
3721     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
3722     * then a soft keyboard will not be displayed for this text view.
3723     *
3724     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
3725     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
3726     * type.
3727     *
3728     * @see #getInputType()
3729     * @see #setRawInputType(int)
3730     * @see android.text.InputType
3731     * @attr ref android.R.styleable#TextView_inputType
3732     */
3733    public void setInputType(int type) {
3734        final boolean wasPassword = isPasswordInputType(getInputType());
3735        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
3736        setInputType(type, false);
3737        final boolean isPassword = isPasswordInputType(type);
3738        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
3739        boolean forceUpdate = false;
3740        if (isPassword) {
3741            setTransformationMethod(PasswordTransformationMethod.getInstance());
3742            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
3743        } else if (isVisiblePassword) {
3744            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3745                forceUpdate = true;
3746            }
3747            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
3748        } else if (wasPassword || wasVisiblePassword) {
3749            // not in password mode, clean up typeface and transformation
3750            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
3751            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3752                forceUpdate = true;
3753            }
3754        }
3755
3756        boolean singleLine = !isMultilineInputType(type);
3757
3758        // We need to update the single line mode if it has changed or we
3759        // were previously in password mode.
3760        if (mSingleLine != singleLine || forceUpdate) {
3761            // Change single line mode, but only change the transformation if
3762            // we are not in password mode.
3763            applySingleLine(singleLine, !isPassword, true);
3764        }
3765
3766        if (!isSuggestionsEnabled()) {
3767            mText = removeSuggestionSpans(mText);
3768        }
3769
3770        InputMethodManager imm = InputMethodManager.peekInstance();
3771        if (imm != null) imm.restartInput(this);
3772    }
3773
3774    /**
3775     * It would be better to rely on the input type for everything. A password inputType should have
3776     * a password transformation. We should hence use isPasswordInputType instead of this method.
3777     *
3778     * We should:
3779     * - Call setInputType in setKeyListener instead of changing the input type directly (which
3780     * would install the correct transformation).
3781     * - Refuse the installation of a non-password transformation in setTransformation if the input
3782     * type is password.
3783     *
3784     * However, this is like this for legacy reasons and we cannot break existing apps. This method
3785     * is useful since it matches what the user can see (obfuscated text or not).
3786     *
3787     * @return true if the current transformation method is of the password type.
3788     */
3789    private boolean hasPasswordTransformationMethod() {
3790        return mTransformation instanceof PasswordTransformationMethod;
3791    }
3792
3793    private static boolean isPasswordInputType(int inputType) {
3794        final int variation =
3795                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3796        return variation
3797                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
3798                || variation
3799                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
3800                || variation
3801                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
3802    }
3803
3804    private static boolean isVisiblePasswordInputType(int inputType) {
3805        final int variation =
3806                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3807        return variation
3808                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
3809    }
3810
3811    /**
3812     * Directly change the content type integer of the text view, without
3813     * modifying any other state.
3814     * @see #setInputType(int)
3815     * @see android.text.InputType
3816     * @attr ref android.R.styleable#TextView_inputType
3817     */
3818    public void setRawInputType(int type) {
3819        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
3820        createEditorIfNeeded();
3821        mEditor.mInputType = type;
3822    }
3823
3824    private void setInputType(int type, boolean direct) {
3825        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
3826        KeyListener input;
3827        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
3828            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
3829            TextKeyListener.Capitalize cap;
3830            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
3831                cap = TextKeyListener.Capitalize.CHARACTERS;
3832            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
3833                cap = TextKeyListener.Capitalize.WORDS;
3834            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
3835                cap = TextKeyListener.Capitalize.SENTENCES;
3836            } else {
3837                cap = TextKeyListener.Capitalize.NONE;
3838            }
3839            input = TextKeyListener.getInstance(autotext, cap);
3840        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
3841            input = DigitsKeyListener.getInstance(
3842                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
3843                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
3844        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
3845            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
3846                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
3847                    input = DateKeyListener.getInstance();
3848                    break;
3849                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
3850                    input = TimeKeyListener.getInstance();
3851                    break;
3852                default:
3853                    input = DateTimeKeyListener.getInstance();
3854                    break;
3855            }
3856        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
3857            input = DialerKeyListener.getInstance();
3858        } else {
3859            input = TextKeyListener.getInstance();
3860        }
3861        setRawInputType(type);
3862        if (direct) {
3863            createEditorIfNeeded();
3864            mEditor.mKeyListener = input;
3865        } else {
3866            setKeyListenerOnly(input);
3867        }
3868    }
3869
3870    /**
3871     * Get the type of the editable content.
3872     *
3873     * @see #setInputType(int)
3874     * @see android.text.InputType
3875     */
3876    public int getInputType() {
3877        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
3878    }
3879
3880    /**
3881     * Change the editor type integer associated with the text view, which
3882     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
3883     * has focus.
3884     * @see #getImeOptions
3885     * @see android.view.inputmethod.EditorInfo
3886     * @attr ref android.R.styleable#TextView_imeOptions
3887     */
3888    public void setImeOptions(int imeOptions) {
3889        createEditorIfNeeded();
3890        mEditor.createInputContentTypeIfNeeded();
3891        mEditor.mInputContentType.imeOptions = imeOptions;
3892    }
3893
3894    /**
3895     * Get the type of the IME editor.
3896     *
3897     * @see #setImeOptions(int)
3898     * @see android.view.inputmethod.EditorInfo
3899     */
3900    public int getImeOptions() {
3901        return mEditor != null && mEditor.mInputContentType != null
3902                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
3903    }
3904
3905    /**
3906     * Change the custom IME action associated with the text view, which
3907     * will be reported to an IME with {@link EditorInfo#actionLabel}
3908     * and {@link EditorInfo#actionId} when it has focus.
3909     * @see #getImeActionLabel
3910     * @see #getImeActionId
3911     * @see android.view.inputmethod.EditorInfo
3912     * @attr ref android.R.styleable#TextView_imeActionLabel
3913     * @attr ref android.R.styleable#TextView_imeActionId
3914     */
3915    public void setImeActionLabel(CharSequence label, int actionId) {
3916        createEditorIfNeeded();
3917        mEditor.createInputContentTypeIfNeeded();
3918        mEditor.mInputContentType.imeActionLabel = label;
3919        mEditor.mInputContentType.imeActionId = actionId;
3920    }
3921
3922    /**
3923     * Get the IME action label previous set with {@link #setImeActionLabel}.
3924     *
3925     * @see #setImeActionLabel
3926     * @see android.view.inputmethod.EditorInfo
3927     */
3928    public CharSequence getImeActionLabel() {
3929        return mEditor != null && mEditor.mInputContentType != null
3930                ? mEditor.mInputContentType.imeActionLabel : null;
3931    }
3932
3933    /**
3934     * Get the IME action ID previous set with {@link #setImeActionLabel}.
3935     *
3936     * @see #setImeActionLabel
3937     * @see android.view.inputmethod.EditorInfo
3938     */
3939    public int getImeActionId() {
3940        return mEditor != null && mEditor.mInputContentType != null
3941                ? mEditor.mInputContentType.imeActionId : 0;
3942    }
3943
3944    /**
3945     * Set a special listener to be called when an action is performed
3946     * on the text view.  This will be called when the enter key is pressed,
3947     * or when an action supplied to the IME is selected by the user.  Setting
3948     * this means that the normal hard key event will not insert a newline
3949     * into the text view, even if it is multi-line; holding down the ALT
3950     * modifier will, however, allow the user to insert a newline character.
3951     */
3952    public void setOnEditorActionListener(OnEditorActionListener l) {
3953        createEditorIfNeeded();
3954        mEditor.createInputContentTypeIfNeeded();
3955        mEditor.mInputContentType.onEditorActionListener = l;
3956    }
3957
3958    /**
3959     * Called when an attached input method calls
3960     * {@link InputConnection#performEditorAction(int)
3961     * InputConnection.performEditorAction()}
3962     * for this text view.  The default implementation will call your action
3963     * listener supplied to {@link #setOnEditorActionListener}, or perform
3964     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
3965     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
3966     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
3967     * EditorInfo.IME_ACTION_DONE}.
3968     *
3969     * <p>For backwards compatibility, if no IME options have been set and the
3970     * text view would not normally advance focus on enter, then
3971     * the NEXT and DONE actions received here will be turned into an enter
3972     * key down/up pair to go through the normal key handling.
3973     *
3974     * @param actionCode The code of the action being performed.
3975     *
3976     * @see #setOnEditorActionListener
3977     */
3978    public void onEditorAction(int actionCode) {
3979        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
3980        if (ict != null) {
3981            if (ict.onEditorActionListener != null) {
3982                if (ict.onEditorActionListener.onEditorAction(this,
3983                        actionCode, null)) {
3984                    return;
3985                }
3986            }
3987
3988            // This is the handling for some default action.
3989            // Note that for backwards compatibility we don't do this
3990            // default handling if explicit ime options have not been given,
3991            // instead turning this into the normal enter key codes that an
3992            // app may be expecting.
3993            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
3994                View v = focusSearch(FOCUS_FORWARD);
3995                if (v != null) {
3996                    if (!v.requestFocus(FOCUS_FORWARD)) {
3997                        throw new IllegalStateException("focus search returned a view " +
3998                                "that wasn't able to take focus!");
3999                    }
4000                }
4001                return;
4002
4003            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4004                View v = focusSearch(FOCUS_BACKWARD);
4005                if (v != null) {
4006                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4007                        throw new IllegalStateException("focus search returned a view " +
4008                                "that wasn't able to take focus!");
4009                    }
4010                }
4011                return;
4012
4013            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4014                InputMethodManager imm = InputMethodManager.peekInstance();
4015                if (imm != null && imm.isActive(this)) {
4016                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4017                }
4018                return;
4019            }
4020        }
4021
4022        ViewRootImpl viewRootImpl = getViewRootImpl();
4023        if (viewRootImpl != null) {
4024            long eventTime = SystemClock.uptimeMillis();
4025            viewRootImpl.dispatchKeyFromIme(
4026                    new KeyEvent(eventTime, eventTime,
4027                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4028                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4029                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4030                    | KeyEvent.FLAG_EDITOR_ACTION));
4031            viewRootImpl.dispatchKeyFromIme(
4032                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4033                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4034                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4035                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4036                    | KeyEvent.FLAG_EDITOR_ACTION));
4037        }
4038    }
4039
4040    /**
4041     * Set the private content type of the text, which is the
4042     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4043     * field that will be filled in when creating an input connection.
4044     *
4045     * @see #getPrivateImeOptions()
4046     * @see EditorInfo#privateImeOptions
4047     * @attr ref android.R.styleable#TextView_privateImeOptions
4048     */
4049    public void setPrivateImeOptions(String type) {
4050        createEditorIfNeeded();
4051        mEditor.createInputContentTypeIfNeeded();
4052        mEditor.mInputContentType.privateImeOptions = type;
4053    }
4054
4055    /**
4056     * Get the private type of the content.
4057     *
4058     * @see #setPrivateImeOptions(String)
4059     * @see EditorInfo#privateImeOptions
4060     */
4061    public String getPrivateImeOptions() {
4062        return mEditor != null && mEditor.mInputContentType != null
4063                ? mEditor.mInputContentType.privateImeOptions : null;
4064    }
4065
4066    /**
4067     * Set the extra input data of the text, which is the
4068     * {@link EditorInfo#extras TextBoxAttribute.extras}
4069     * Bundle that will be filled in when creating an input connection.  The
4070     * given integer is the resource ID of an XML resource holding an
4071     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4072     *
4073     * @see #getInputExtras(boolean)
4074     * @see EditorInfo#extras
4075     * @attr ref android.R.styleable#TextView_editorExtras
4076     */
4077    public void setInputExtras(int xmlResId) throws XmlPullParserException, IOException {
4078        createEditorIfNeeded();
4079        XmlResourceParser parser = getResources().getXml(xmlResId);
4080        mEditor.createInputContentTypeIfNeeded();
4081        mEditor.mInputContentType.extras = new Bundle();
4082        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4083    }
4084
4085    /**
4086     * Retrieve the input extras currently associated with the text view, which
4087     * can be viewed as well as modified.
4088     *
4089     * @param create If true, the extras will be created if they don't already
4090     * exist.  Otherwise, null will be returned if none have been created.
4091     * @see #setInputExtras(int)
4092     * @see EditorInfo#extras
4093     * @attr ref android.R.styleable#TextView_editorExtras
4094     */
4095    public Bundle getInputExtras(boolean create) {
4096        if (mEditor == null && !create) return null;
4097        createEditorIfNeeded();
4098        if (mEditor.mInputContentType == null) {
4099            if (!create) return null;
4100            mEditor.createInputContentTypeIfNeeded();
4101        }
4102        if (mEditor.mInputContentType.extras == null) {
4103            if (!create) return null;
4104            mEditor.mInputContentType.extras = new Bundle();
4105        }
4106        return mEditor.mInputContentType.extras;
4107    }
4108
4109    /**
4110     * Returns the error message that was set to be displayed with
4111     * {@link #setError}, or <code>null</code> if no error was set
4112     * or if it the error was cleared by the widget after user input.
4113     */
4114    public CharSequence getError() {
4115        return mEditor == null ? null : mEditor.mError;
4116    }
4117
4118    /**
4119     * Sets the right-hand compound drawable of the TextView to the "error"
4120     * icon and sets an error message that will be displayed in a popup when
4121     * the TextView has focus.  The icon and error message will be reset to
4122     * null when any key events cause changes to the TextView's text.  If the
4123     * <code>error</code> is <code>null</code>, the error message and icon
4124     * will be cleared.
4125     */
4126    @android.view.RemotableViewMethod
4127    public void setError(CharSequence error) {
4128        if (error == null) {
4129            setError(null, null);
4130        } else {
4131            Drawable dr = getContext().getResources().
4132                getDrawable(com.android.internal.R.drawable.indicator_input_error);
4133
4134            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
4135            setError(error, dr);
4136        }
4137    }
4138
4139    /**
4140     * Sets the right-hand compound drawable of the TextView to the specified
4141     * icon and sets an error message that will be displayed in a popup when
4142     * the TextView has focus.  The icon and error message will be reset to
4143     * null when any key events cause changes to the TextView's text.  The
4144     * drawable must already have had {@link Drawable#setBounds} set on it.
4145     * If the <code>error</code> is <code>null</code>, the error message will
4146     * be cleared (and you should provide a <code>null</code> icon as well).
4147     */
4148    public void setError(CharSequence error, Drawable icon) {
4149        createEditorIfNeeded();
4150        mEditor.setError(error, icon);
4151    }
4152
4153    @Override
4154    protected boolean setFrame(int l, int t, int r, int b) {
4155        boolean result = super.setFrame(l, t, r, b);
4156
4157        if (mEditor != null) mEditor.setFrame();
4158
4159        restartMarqueeIfNeeded();
4160
4161        return result;
4162    }
4163
4164    private void restartMarqueeIfNeeded() {
4165        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4166            mRestartMarquee = false;
4167            startMarquee();
4168        }
4169    }
4170
4171    /**
4172     * Sets the list of input filters that will be used if the buffer is
4173     * Editable. Has no effect otherwise.
4174     *
4175     * @attr ref android.R.styleable#TextView_maxLength
4176     */
4177    public void setFilters(InputFilter[] filters) {
4178        if (filters == null) {
4179            throw new IllegalArgumentException();
4180        }
4181
4182        mFilters = filters;
4183
4184        if (mText instanceof Editable) {
4185            setFilters((Editable) mText, filters);
4186        }
4187    }
4188
4189    /**
4190     * Sets the list of input filters on the specified Editable,
4191     * and includes mInput in the list if it is an InputFilter.
4192     */
4193    private void setFilters(Editable e, InputFilter[] filters) {
4194        if (mEditor != null && mEditor.mKeyListener instanceof InputFilter) {
4195            InputFilter[] nf = new InputFilter[filters.length + 1];
4196
4197            System.arraycopy(filters, 0, nf, 0, filters.length);
4198            nf[filters.length] = (InputFilter) mEditor.mKeyListener;
4199
4200            e.setFilters(nf);
4201        } else {
4202            e.setFilters(filters);
4203        }
4204    }
4205
4206    /**
4207     * Returns the current list of input filters.
4208     *
4209     * @attr ref android.R.styleable#TextView_maxLength
4210     */
4211    public InputFilter[] getFilters() {
4212        return mFilters;
4213    }
4214
4215    /////////////////////////////////////////////////////////////////////////
4216
4217    int getVerticalOffset(boolean forceNormal) {
4218        int voffset = 0;
4219        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4220
4221        Layout l = mLayout;
4222        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4223            l = mHintLayout;
4224        }
4225
4226        if (gravity != Gravity.TOP) {
4227            int boxht;
4228
4229            if (l == mHintLayout) {
4230                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
4231                        getCompoundPaddingBottom();
4232            } else {
4233                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
4234                        getExtendedPaddingBottom();
4235            }
4236            int textht = l.getHeight();
4237
4238            if (textht < boxht) {
4239                if (gravity == Gravity.BOTTOM)
4240                    voffset = boxht - textht;
4241                else // (gravity == Gravity.CENTER_VERTICAL)
4242                    voffset = (boxht - textht) >> 1;
4243            }
4244        }
4245        return voffset;
4246    }
4247
4248    private int getBottomVerticalOffset(boolean forceNormal) {
4249        int voffset = 0;
4250        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4251
4252        Layout l = mLayout;
4253        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4254            l = mHintLayout;
4255        }
4256
4257        if (gravity != Gravity.BOTTOM) {
4258            int boxht;
4259
4260            if (l == mHintLayout) {
4261                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
4262                        getCompoundPaddingBottom();
4263            } else {
4264                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
4265                        getExtendedPaddingBottom();
4266            }
4267            int textht = l.getHeight();
4268
4269            if (textht < boxht) {
4270                if (gravity == Gravity.TOP)
4271                    voffset = boxht - textht;
4272                else // (gravity == Gravity.CENTER_VERTICAL)
4273                    voffset = (boxht - textht) >> 1;
4274            }
4275        }
4276        return voffset;
4277    }
4278
4279    void invalidateCursorPath() {
4280        if (mHighlightPathBogus) {
4281            invalidateCursor();
4282        } else {
4283            final int horizontalPadding = getCompoundPaddingLeft();
4284            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4285
4286            if (mEditor.mCursorCount == 0) {
4287                synchronized (TEMP_RECTF) {
4288                    /*
4289                     * The reason for this concern about the thickness of the
4290                     * cursor and doing the floor/ceil on the coordinates is that
4291                     * some EditTexts (notably textfields in the Browser) have
4292                     * anti-aliased text where not all the characters are
4293                     * necessarily at integer-multiple locations.  This should
4294                     * make sure the entire cursor gets invalidated instead of
4295                     * sometimes missing half a pixel.
4296                     */
4297                    float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
4298                    if (thick < 1.0f) {
4299                        thick = 1.0f;
4300                    }
4301
4302                    thick /= 2.0f;
4303
4304                    // mHighlightPath is guaranteed to be non null at that point.
4305                    mHighlightPath.computeBounds(TEMP_RECTF, false);
4306
4307                    invalidate((int) FloatMath.floor(horizontalPadding + TEMP_RECTF.left - thick),
4308                            (int) FloatMath.floor(verticalPadding + TEMP_RECTF.top - thick),
4309                            (int) FloatMath.ceil(horizontalPadding + TEMP_RECTF.right + thick),
4310                            (int) FloatMath.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
4311                }
4312            } else {
4313                for (int i = 0; i < mEditor.mCursorCount; i++) {
4314                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4315                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
4316                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
4317                }
4318            }
4319        }
4320    }
4321
4322    void invalidateCursor() {
4323        int where = getSelectionEnd();
4324
4325        invalidateCursor(where, where, where);
4326    }
4327
4328    private void invalidateCursor(int a, int b, int c) {
4329        if (a >= 0 || b >= 0 || c >= 0) {
4330            int start = Math.min(Math.min(a, b), c);
4331            int end = Math.max(Math.max(a, b), c);
4332            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
4333        }
4334    }
4335
4336    /**
4337     * Invalidates the region of text enclosed between the start and end text offsets.
4338     */
4339    void invalidateRegion(int start, int end, boolean invalidateCursor) {
4340        if (mLayout == null) {
4341            invalidate();
4342        } else {
4343                int lineStart = mLayout.getLineForOffset(start);
4344                int top = mLayout.getLineTop(lineStart);
4345
4346                // This is ridiculous, but the descent from the line above
4347                // can hang down into the line we really want to redraw,
4348                // so we have to invalidate part of the line above to make
4349                // sure everything that needs to be redrawn really is.
4350                // (But not the whole line above, because that would cause
4351                // the same problem with the descenders on the line above it!)
4352                if (lineStart > 0) {
4353                    top -= mLayout.getLineDescent(lineStart - 1);
4354                }
4355
4356                int lineEnd;
4357
4358                if (start == end)
4359                    lineEnd = lineStart;
4360                else
4361                    lineEnd = mLayout.getLineForOffset(end);
4362
4363                int bottom = mLayout.getLineBottom(lineEnd);
4364
4365                // mEditor can be null in case selection is set programmatically.
4366                if (invalidateCursor && mEditor != null) {
4367                    for (int i = 0; i < mEditor.mCursorCount; i++) {
4368                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4369                        top = Math.min(top, bounds.top);
4370                        bottom = Math.max(bottom, bounds.bottom);
4371                    }
4372                }
4373
4374                final int compoundPaddingLeft = getCompoundPaddingLeft();
4375                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4376
4377                int left, right;
4378                if (lineStart == lineEnd && !invalidateCursor) {
4379                    left = (int) mLayout.getPrimaryHorizontal(start);
4380                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
4381                    left += compoundPaddingLeft;
4382                    right += compoundPaddingLeft;
4383                } else {
4384                    // Rectangle bounding box when the region spans several lines
4385                    left = compoundPaddingLeft;
4386                    right = getWidth() - getCompoundPaddingRight();
4387                }
4388
4389                invalidate(mScrollX + left, verticalPadding + top,
4390                        mScrollX + right, verticalPadding + bottom);
4391        }
4392    }
4393
4394    private void registerForPreDraw() {
4395        if (!mPreDrawRegistered) {
4396            getViewTreeObserver().addOnPreDrawListener(this);
4397            mPreDrawRegistered = true;
4398        }
4399    }
4400
4401    /**
4402     * {@inheritDoc}
4403     */
4404    public boolean onPreDraw() {
4405        if (mLayout == null) {
4406            assumeLayout();
4407        }
4408
4409        boolean changed = false;
4410
4411        if (mMovement != null) {
4412            /* This code also provides auto-scrolling when a cursor is moved using a
4413             * CursorController (insertion point or selection limits).
4414             * For selection, ensure start or end is visible depending on controller's state.
4415             */
4416            int curs = getSelectionEnd();
4417            // Do not create the controller if it is not already created.
4418            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
4419                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
4420                curs = getSelectionStart();
4421            }
4422
4423            /*
4424             * TODO: This should really only keep the end in view if
4425             * it already was before the text changed.  I'm not sure
4426             * of a good way to tell from here if it was.
4427             */
4428            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
4429                curs = mText.length();
4430            }
4431
4432            if (curs >= 0) {
4433                changed = bringPointIntoView(curs);
4434            }
4435        } else {
4436            changed = bringTextIntoView();
4437        }
4438
4439        // This has to be checked here since:
4440        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
4441        //   a screen rotation) since layout is not yet initialized at that point.
4442        if (mEditor != null && mEditor.mCreatedWithASelection) {
4443            mEditor.startSelectionActionMode();
4444            mEditor.mCreatedWithASelection = false;
4445        }
4446
4447        // Phone specific code (there is no ExtractEditText on tablets).
4448        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
4449        // not be set. Do the test here instead.
4450        if (this instanceof ExtractEditText && hasSelection() && mEditor != null) {
4451            mEditor.startSelectionActionMode();
4452        }
4453
4454        getViewTreeObserver().removeOnPreDrawListener(this);
4455        mPreDrawRegistered = false;
4456
4457        return !changed;
4458    }
4459
4460    @Override
4461    protected void onAttachedToWindow() {
4462        super.onAttachedToWindow();
4463
4464        mTemporaryDetach = false;
4465
4466        if (mEditor != null) mEditor.onAttachedToWindow();
4467    }
4468
4469    @Override
4470    protected void onDetachedFromWindow() {
4471        super.onDetachedFromWindow();
4472
4473        if (mPreDrawRegistered) {
4474            getViewTreeObserver().removeOnPreDrawListener(this);
4475            mPreDrawRegistered = false;
4476        }
4477
4478        resetResolvedDrawables();
4479
4480        if (mEditor != null) mEditor.onDetachedFromWindow();
4481    }
4482
4483    @Override
4484    public void onScreenStateChanged(int screenState) {
4485        super.onScreenStateChanged(screenState);
4486        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
4487    }
4488
4489    @Override
4490    protected boolean isPaddingOffsetRequired() {
4491        return mShadowRadius != 0 || mDrawables != null;
4492    }
4493
4494    @Override
4495    protected int getLeftPaddingOffset() {
4496        return getCompoundPaddingLeft() - mPaddingLeft +
4497                (int) Math.min(0, mShadowDx - mShadowRadius);
4498    }
4499
4500    @Override
4501    protected int getTopPaddingOffset() {
4502        return (int) Math.min(0, mShadowDy - mShadowRadius);
4503    }
4504
4505    @Override
4506    protected int getBottomPaddingOffset() {
4507        return (int) Math.max(0, mShadowDy + mShadowRadius);
4508    }
4509
4510    @Override
4511    protected int getRightPaddingOffset() {
4512        return -(getCompoundPaddingRight() - mPaddingRight) +
4513                (int) Math.max(0, mShadowDx + mShadowRadius);
4514    }
4515
4516    @Override
4517    protected boolean verifyDrawable(Drawable who) {
4518        final boolean verified = super.verifyDrawable(who);
4519        if (!verified && mDrawables != null) {
4520            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
4521                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom ||
4522                    who == mDrawables.mDrawableStart || who == mDrawables.mDrawableEnd;
4523        }
4524        return verified;
4525    }
4526
4527    @Override
4528    public void jumpDrawablesToCurrentState() {
4529        super.jumpDrawablesToCurrentState();
4530        if (mDrawables != null) {
4531            if (mDrawables.mDrawableLeft != null) {
4532                mDrawables.mDrawableLeft.jumpToCurrentState();
4533            }
4534            if (mDrawables.mDrawableTop != null) {
4535                mDrawables.mDrawableTop.jumpToCurrentState();
4536            }
4537            if (mDrawables.mDrawableRight != null) {
4538                mDrawables.mDrawableRight.jumpToCurrentState();
4539            }
4540            if (mDrawables.mDrawableBottom != null) {
4541                mDrawables.mDrawableBottom.jumpToCurrentState();
4542            }
4543            if (mDrawables.mDrawableStart != null) {
4544                mDrawables.mDrawableStart.jumpToCurrentState();
4545            }
4546            if (mDrawables.mDrawableEnd != null) {
4547                mDrawables.mDrawableEnd.jumpToCurrentState();
4548            }
4549        }
4550    }
4551
4552    @Override
4553    public void invalidateDrawable(Drawable drawable) {
4554        if (verifyDrawable(drawable)) {
4555            final Rect dirty = drawable.getBounds();
4556            int scrollX = mScrollX;
4557            int scrollY = mScrollY;
4558
4559            // IMPORTANT: The coordinates below are based on the coordinates computed
4560            // for each compound drawable in onDraw(). Make sure to update each section
4561            // accordingly.
4562            final TextView.Drawables drawables = mDrawables;
4563            if (drawables != null) {
4564                if (drawable == drawables.mDrawableLeft) {
4565                    final int compoundPaddingTop = getCompoundPaddingTop();
4566                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4567                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4568
4569                    scrollX += mPaddingLeft;
4570                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
4571                } else if (drawable == drawables.mDrawableRight) {
4572                    final int compoundPaddingTop = getCompoundPaddingTop();
4573                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4574                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4575
4576                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
4577                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
4578                } else if (drawable == drawables.mDrawableTop) {
4579                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4580                    final int compoundPaddingRight = getCompoundPaddingRight();
4581                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4582
4583                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
4584                    scrollY += mPaddingTop;
4585                } else if (drawable == drawables.mDrawableBottom) {
4586                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4587                    final int compoundPaddingRight = getCompoundPaddingRight();
4588                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4589
4590                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
4591                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
4592                }
4593            }
4594
4595            invalidate(dirty.left + scrollX, dirty.top + scrollY,
4596                    dirty.right + scrollX, dirty.bottom + scrollY);
4597        }
4598    }
4599
4600    @Override
4601    public boolean hasOverlappingRendering() {
4602        return (getBackground() != null || mText instanceof Spannable || hasSelection());
4603    }
4604
4605    /**
4606     * When a TextView is used to display a useful piece of information to the user (such as a
4607     * contact's address), it should be made selectable, so that the user can select and copy this
4608     * content.
4609     *
4610     * Use {@link #setTextIsSelectable(boolean)} or the
4611     * {@link android.R.styleable#TextView_textIsSelectable} XML attribute to make this TextView
4612     * selectable (text is not selectable by default).
4613     *
4614     * Note that this method simply returns the state of this flag. Although this flag has to be set
4615     * in order to select text in non-editable TextView, the content of an {@link EditText} can
4616     * always be selected, independently of the value of this flag.
4617     *
4618     * @return True if the text displayed in this TextView can be selected by the user.
4619     *
4620     * @attr ref android.R.styleable#TextView_textIsSelectable
4621     */
4622    public boolean isTextSelectable() {
4623        return mEditor == null ? false : mEditor.mTextIsSelectable;
4624    }
4625
4626    /**
4627     * Sets whether or not (default) the content of this view is selectable by the user.
4628     *
4629     * Note that this methods affect the {@link #setFocusable(boolean)},
4630     * {@link #setFocusableInTouchMode(boolean)} {@link #setClickable(boolean)} and
4631     * {@link #setLongClickable(boolean)} states and you may want to restore these if they were
4632     * customized.
4633     *
4634     * See {@link #isTextSelectable} for details.
4635     *
4636     * @param selectable Whether or not the content of this TextView should be selectable.
4637     */
4638    public void setTextIsSelectable(boolean selectable) {
4639        if (!selectable && mEditor == null) return; // false is default value with no edit data
4640
4641        createEditorIfNeeded();
4642        if (mEditor.mTextIsSelectable == selectable) return;
4643
4644        mEditor.mTextIsSelectable = selectable;
4645        setFocusableInTouchMode(selectable);
4646        setFocusable(selectable);
4647        setClickable(selectable);
4648        setLongClickable(selectable);
4649
4650        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
4651
4652        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
4653        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
4654
4655        // Called by setText above, but safer in case of future code changes
4656        mEditor.prepareCursorControllers();
4657    }
4658
4659    @Override
4660    protected int[] onCreateDrawableState(int extraSpace) {
4661        final int[] drawableState;
4662
4663        if (mSingleLine) {
4664            drawableState = super.onCreateDrawableState(extraSpace);
4665        } else {
4666            drawableState = super.onCreateDrawableState(extraSpace + 1);
4667            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
4668        }
4669
4670        if (isTextSelectable()) {
4671            // Disable pressed state, which was introduced when TextView was made clickable.
4672            // Prevents text color change.
4673            // setClickable(false) would have a similar effect, but it also disables focus changes
4674            // and long press actions, which are both needed by text selection.
4675            final int length = drawableState.length;
4676            for (int i = 0; i < length; i++) {
4677                if (drawableState[i] == R.attr.state_pressed) {
4678                    final int[] nonPressedState = new int[length - 1];
4679                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
4680                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
4681                    return nonPressedState;
4682                }
4683            }
4684        }
4685
4686        return drawableState;
4687    }
4688
4689    private Path getUpdatedHighlightPath() {
4690        Path highlight = null;
4691        Paint highlightPaint = mHighlightPaint;
4692
4693        final int selStart = getSelectionStart();
4694        final int selEnd = getSelectionEnd();
4695        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
4696            if (selStart == selEnd) {
4697                if (mEditor != null && mEditor.isCursorVisible() &&
4698                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
4699                        (2 * Editor.BLINK) < Editor.BLINK) {
4700                    if (mHighlightPathBogus) {
4701                        if (mHighlightPath == null) mHighlightPath = new Path();
4702                        mHighlightPath.reset();
4703                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
4704                        mEditor.updateCursorsPositions();
4705                        mHighlightPathBogus = false;
4706                    }
4707
4708                    // XXX should pass to skin instead of drawing directly
4709                    highlightPaint.setColor(mCurTextColor);
4710                    highlightPaint.setStyle(Paint.Style.STROKE);
4711                    highlight = mHighlightPath;
4712                }
4713            } else {
4714                if (mHighlightPathBogus) {
4715                    if (mHighlightPath == null) mHighlightPath = new Path();
4716                    mHighlightPath.reset();
4717                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4718                    mHighlightPathBogus = false;
4719                }
4720
4721                // XXX should pass to skin instead of drawing directly
4722                highlightPaint.setColor(mHighlightColor);
4723                highlightPaint.setStyle(Paint.Style.FILL);
4724
4725                highlight = mHighlightPath;
4726            }
4727        }
4728        return highlight;
4729    }
4730
4731    @Override
4732    protected void onDraw(Canvas canvas) {
4733        restartMarqueeIfNeeded();
4734
4735        // Draw the background for this view
4736        super.onDraw(canvas);
4737
4738        final int compoundPaddingLeft = getCompoundPaddingLeft();
4739        final int compoundPaddingTop = getCompoundPaddingTop();
4740        final int compoundPaddingRight = getCompoundPaddingRight();
4741        final int compoundPaddingBottom = getCompoundPaddingBottom();
4742        final int scrollX = mScrollX;
4743        final int scrollY = mScrollY;
4744        final int right = mRight;
4745        final int left = mLeft;
4746        final int bottom = mBottom;
4747        final int top = mTop;
4748
4749        final Drawables dr = mDrawables;
4750        if (dr != null) {
4751            /*
4752             * Compound, not extended, because the icon is not clipped
4753             * if the text height is smaller.
4754             */
4755
4756            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
4757            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
4758
4759            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4760            // Make sure to update invalidateDrawable() when changing this code.
4761            if (dr.mDrawableLeft != null) {
4762                canvas.save();
4763                canvas.translate(scrollX + mPaddingLeft,
4764                                 scrollY + compoundPaddingTop +
4765                                 (vspace - dr.mDrawableHeightLeft) / 2);
4766                dr.mDrawableLeft.draw(canvas);
4767                canvas.restore();
4768            }
4769
4770            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4771            // Make sure to update invalidateDrawable() when changing this code.
4772            if (dr.mDrawableRight != null) {
4773                canvas.save();
4774                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
4775                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
4776                dr.mDrawableRight.draw(canvas);
4777                canvas.restore();
4778            }
4779
4780            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4781            // Make sure to update invalidateDrawable() when changing this code.
4782            if (dr.mDrawableTop != null) {
4783                canvas.save();
4784                canvas.translate(scrollX + compoundPaddingLeft +
4785                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
4786                dr.mDrawableTop.draw(canvas);
4787                canvas.restore();
4788            }
4789
4790            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4791            // Make sure to update invalidateDrawable() when changing this code.
4792            if (dr.mDrawableBottom != null) {
4793                canvas.save();
4794                canvas.translate(scrollX + compoundPaddingLeft +
4795                        (hspace - dr.mDrawableWidthBottom) / 2,
4796                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
4797                dr.mDrawableBottom.draw(canvas);
4798                canvas.restore();
4799            }
4800        }
4801
4802        int color = mCurTextColor;
4803
4804        if (mLayout == null) {
4805            assumeLayout();
4806        }
4807
4808        Layout layout = mLayout;
4809
4810        if (mHint != null && mText.length() == 0) {
4811            if (mHintTextColor != null) {
4812                color = mCurHintTextColor;
4813            }
4814
4815            layout = mHintLayout;
4816        }
4817
4818        mTextPaint.setColor(color);
4819        mTextPaint.drawableState = getDrawableState();
4820
4821        canvas.save();
4822        /*  Would be faster if we didn't have to do this. Can we chop the
4823            (displayable) text so that we don't need to do this ever?
4824        */
4825
4826        int extendedPaddingTop = getExtendedPaddingTop();
4827        int extendedPaddingBottom = getExtendedPaddingBottom();
4828
4829        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4830        final int maxScrollY = mLayout.getHeight() - vspace;
4831
4832        float clipLeft = compoundPaddingLeft + scrollX;
4833        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
4834        float clipRight = right - left - compoundPaddingRight + scrollX;
4835        float clipBottom = bottom - top + scrollY -
4836                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
4837
4838        if (mShadowRadius != 0) {
4839            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
4840            clipRight += Math.max(0, mShadowDx + mShadowRadius);
4841
4842            clipTop += Math.min(0, mShadowDy - mShadowRadius);
4843            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
4844        }
4845
4846        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
4847
4848        int voffsetText = 0;
4849        int voffsetCursor = 0;
4850
4851        // translate in by our padding
4852        /* shortcircuit calling getVerticaOffset() */
4853        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4854            voffsetText = getVerticalOffset(false);
4855            voffsetCursor = getVerticalOffset(true);
4856        }
4857        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
4858
4859        final boolean isLayoutRtl = isLayoutRtl();
4860
4861        final int layoutDirection = getLayoutDirection();
4862        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
4863        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
4864                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
4865            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
4866                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
4867                final int width = mRight - mLeft;
4868                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
4869                final float dx = mLayout.getLineRight(0) - (width - padding);
4870                canvas.translate(isLayoutRtl ? -dx : +dx, 0.0f);
4871            }
4872
4873            if (mMarquee != null && mMarquee.isRunning()) {
4874                final float dx = -mMarquee.getScroll();
4875                canvas.translate(isLayoutRtl ? -dx : +dx, 0.0f);
4876            }
4877        }
4878
4879        final int cursorOffsetVertical = voffsetCursor - voffsetText;
4880
4881        Path highlight = getUpdatedHighlightPath();
4882        if (mEditor != null) {
4883            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
4884        } else {
4885            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4886        }
4887
4888        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
4889            final int dx = (int) mMarquee.getGhostOffset();
4890            canvas.translate(isLayoutRtl ? -dx : dx, 0.0f);
4891            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4892        }
4893
4894        canvas.restore();
4895    }
4896
4897    @Override
4898    public void getFocusedRect(Rect r) {
4899        if (mLayout == null) {
4900            super.getFocusedRect(r);
4901            return;
4902        }
4903
4904        int selEnd = getSelectionEnd();
4905        if (selEnd < 0) {
4906            super.getFocusedRect(r);
4907            return;
4908        }
4909
4910        int selStart = getSelectionStart();
4911        if (selStart < 0 || selStart >= selEnd) {
4912            int line = mLayout.getLineForOffset(selEnd);
4913            r.top = mLayout.getLineTop(line);
4914            r.bottom = mLayout.getLineBottom(line);
4915            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
4916            r.right = r.left + 4;
4917        } else {
4918            int lineStart = mLayout.getLineForOffset(selStart);
4919            int lineEnd = mLayout.getLineForOffset(selEnd);
4920            r.top = mLayout.getLineTop(lineStart);
4921            r.bottom = mLayout.getLineBottom(lineEnd);
4922            if (lineStart == lineEnd) {
4923                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
4924                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
4925            } else {
4926                // Selection extends across multiple lines -- make the focused
4927                // rect cover the entire width.
4928                if (mHighlightPathBogus) {
4929                    if (mHighlightPath == null) mHighlightPath = new Path();
4930                    mHighlightPath.reset();
4931                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4932                    mHighlightPathBogus = false;
4933                }
4934                synchronized (TEMP_RECTF) {
4935                    mHighlightPath.computeBounds(TEMP_RECTF, true);
4936                    r.left = (int)TEMP_RECTF.left-1;
4937                    r.right = (int)TEMP_RECTF.right+1;
4938                }
4939            }
4940        }
4941
4942        // Adjust for padding and gravity.
4943        int paddingLeft = getCompoundPaddingLeft();
4944        int paddingTop = getExtendedPaddingTop();
4945        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4946            paddingTop += getVerticalOffset(false);
4947        }
4948        r.offset(paddingLeft, paddingTop);
4949        int paddingBottom = getExtendedPaddingBottom();
4950        r.bottom += paddingBottom;
4951    }
4952
4953    /**
4954     * Return the number of lines of text, or 0 if the internal Layout has not
4955     * been built.
4956     */
4957    public int getLineCount() {
4958        return mLayout != null ? mLayout.getLineCount() : 0;
4959    }
4960
4961    /**
4962     * Return the baseline for the specified line (0...getLineCount() - 1)
4963     * If bounds is not null, return the top, left, right, bottom extents
4964     * of the specified line in it. If the internal Layout has not been built,
4965     * return 0 and set bounds to (0, 0, 0, 0)
4966     * @param line which line to examine (0..getLineCount() - 1)
4967     * @param bounds Optional. If not null, it returns the extent of the line
4968     * @return the Y-coordinate of the baseline
4969     */
4970    public int getLineBounds(int line, Rect bounds) {
4971        if (mLayout == null) {
4972            if (bounds != null) {
4973                bounds.set(0, 0, 0, 0);
4974            }
4975            return 0;
4976        }
4977        else {
4978            int baseline = mLayout.getLineBounds(line, bounds);
4979
4980            int voffset = getExtendedPaddingTop();
4981            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4982                voffset += getVerticalOffset(true);
4983            }
4984            if (bounds != null) {
4985                bounds.offset(getCompoundPaddingLeft(), voffset);
4986            }
4987            return baseline + voffset;
4988        }
4989    }
4990
4991    @Override
4992    public int getBaseline() {
4993        if (mLayout == null) {
4994            return super.getBaseline();
4995        }
4996
4997        int voffset = 0;
4998        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4999            voffset = getVerticalOffset(true);
5000        }
5001
5002        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
5003    }
5004
5005    /**
5006     * @hide
5007     */
5008    @Override
5009    protected int getFadeTop(boolean offsetRequired) {
5010        if (mLayout == null) return 0;
5011
5012        int voffset = 0;
5013        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5014            voffset = getVerticalOffset(true);
5015        }
5016
5017        if (offsetRequired) voffset += getTopPaddingOffset();
5018
5019        return getExtendedPaddingTop() + voffset;
5020    }
5021
5022    /**
5023     * @hide
5024     */
5025    @Override
5026    protected int getFadeHeight(boolean offsetRequired) {
5027        return mLayout != null ? mLayout.getHeight() : 0;
5028    }
5029
5030    @Override
5031    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
5032        if (keyCode == KeyEvent.KEYCODE_BACK) {
5033            boolean isInSelectionMode = mEditor != null && mEditor.mSelectionActionMode != null;
5034
5035            if (isInSelectionMode) {
5036                if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
5037                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5038                    if (state != null) {
5039                        state.startTracking(event, this);
5040                    }
5041                    return true;
5042                } else if (event.getAction() == KeyEvent.ACTION_UP) {
5043                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5044                    if (state != null) {
5045                        state.handleUpEvent(event);
5046                    }
5047                    if (event.isTracking() && !event.isCanceled()) {
5048                        stopSelectionActionMode();
5049                        return true;
5050                    }
5051                }
5052            }
5053        }
5054        return super.onKeyPreIme(keyCode, event);
5055    }
5056
5057    @Override
5058    public boolean onKeyDown(int keyCode, KeyEvent event) {
5059        int which = doKeyDown(keyCode, event, null);
5060        if (which == 0) {
5061            // Go through default dispatching.
5062            return super.onKeyDown(keyCode, event);
5063        }
5064
5065        return true;
5066    }
5067
5068    @Override
5069    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
5070        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
5071
5072        int which = doKeyDown(keyCode, down, event);
5073        if (which == 0) {
5074            // Go through default dispatching.
5075            return super.onKeyMultiple(keyCode, repeatCount, event);
5076        }
5077        if (which == -1) {
5078            // Consumed the whole thing.
5079            return true;
5080        }
5081
5082        repeatCount--;
5083
5084        // We are going to dispatch the remaining events to either the input
5085        // or movement method.  To do this, we will just send a repeated stream
5086        // of down and up events until we have done the complete repeatCount.
5087        // It would be nice if those interfaces had an onKeyMultiple() method,
5088        // but adding that is a more complicated change.
5089        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
5090        if (which == 1) {
5091            // mEditor and mEditor.mInput are not null from doKeyDown
5092            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5093            while (--repeatCount > 0) {
5094                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
5095                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5096            }
5097            hideErrorIfUnchanged();
5098
5099        } else if (which == 2) {
5100            // mMovement is not null from doKeyDown
5101            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5102            while (--repeatCount > 0) {
5103                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
5104                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5105            }
5106        }
5107
5108        return true;
5109    }
5110
5111    /**
5112     * Returns true if pressing ENTER in this field advances focus instead
5113     * of inserting the character.  This is true mostly in single-line fields,
5114     * but also in mail addresses and subjects which will display on multiple
5115     * lines but where it doesn't make sense to insert newlines.
5116     */
5117    private boolean shouldAdvanceFocusOnEnter() {
5118        if (getKeyListener() == null) {
5119            return false;
5120        }
5121
5122        if (mSingleLine) {
5123            return true;
5124        }
5125
5126        if (mEditor != null &&
5127                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5128            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5129            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
5130                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
5131                return true;
5132            }
5133        }
5134
5135        return false;
5136    }
5137
5138    /**
5139     * Returns true if pressing TAB in this field advances focus instead
5140     * of inserting the character.  Insert tabs only in multi-line editors.
5141     */
5142    private boolean shouldAdvanceFocusOnTab() {
5143        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
5144                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5145            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5146            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
5147                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
5148                return false;
5149            }
5150        }
5151        return true;
5152    }
5153
5154    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
5155        if (!isEnabled()) {
5156            return 0;
5157        }
5158
5159        switch (keyCode) {
5160            case KeyEvent.KEYCODE_ENTER:
5161                if (event.hasNoModifiers()) {
5162                    // When mInputContentType is set, we know that we are
5163                    // running in a "modern" cupcake environment, so don't need
5164                    // to worry about the application trying to capture
5165                    // enter key events.
5166                    if (mEditor != null && mEditor.mInputContentType != null) {
5167                        // If there is an action listener, given them a
5168                        // chance to consume the event.
5169                        if (mEditor.mInputContentType.onEditorActionListener != null &&
5170                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5171                                this, EditorInfo.IME_NULL, event)) {
5172                            mEditor.mInputContentType.enterDown = true;
5173                            // We are consuming the enter key for them.
5174                            return -1;
5175                        }
5176                    }
5177
5178                    // If our editor should move focus when enter is pressed, or
5179                    // this is a generated event from an IME action button, then
5180                    // don't let it be inserted into the text.
5181                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5182                            || shouldAdvanceFocusOnEnter()) {
5183                        if (hasOnClickListeners()) {
5184                            return 0;
5185                        }
5186                        return -1;
5187                    }
5188                }
5189                break;
5190
5191            case KeyEvent.KEYCODE_DPAD_CENTER:
5192                if (event.hasNoModifiers()) {
5193                    if (shouldAdvanceFocusOnEnter()) {
5194                        return 0;
5195                    }
5196                }
5197                break;
5198
5199            case KeyEvent.KEYCODE_TAB:
5200                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
5201                    if (shouldAdvanceFocusOnTab()) {
5202                        return 0;
5203                    }
5204                }
5205                break;
5206
5207                // Has to be done on key down (and not on key up) to correctly be intercepted.
5208            case KeyEvent.KEYCODE_BACK:
5209                if (mEditor != null && mEditor.mSelectionActionMode != null) {
5210                    stopSelectionActionMode();
5211                    return -1;
5212                }
5213                break;
5214        }
5215
5216        if (mEditor != null && mEditor.mKeyListener != null) {
5217            resetErrorChangedFlag();
5218
5219            boolean doDown = true;
5220            if (otherEvent != null) {
5221                try {
5222                    beginBatchEdit();
5223                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
5224                            otherEvent);
5225                    hideErrorIfUnchanged();
5226                    doDown = false;
5227                    if (handled) {
5228                        return -1;
5229                    }
5230                } catch (AbstractMethodError e) {
5231                    // onKeyOther was added after 1.0, so if it isn't
5232                    // implemented we need to try to dispatch as a regular down.
5233                } finally {
5234                    endBatchEdit();
5235                }
5236            }
5237
5238            if (doDown) {
5239                beginBatchEdit();
5240                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
5241                        keyCode, event);
5242                endBatchEdit();
5243                hideErrorIfUnchanged();
5244                if (handled) return 1;
5245            }
5246        }
5247
5248        // bug 650865: sometimes we get a key event before a layout.
5249        // don't try to move around if we don't know the layout.
5250
5251        if (mMovement != null && mLayout != null) {
5252            boolean doDown = true;
5253            if (otherEvent != null) {
5254                try {
5255                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
5256                            otherEvent);
5257                    doDown = false;
5258                    if (handled) {
5259                        return -1;
5260                    }
5261                } catch (AbstractMethodError e) {
5262                    // onKeyOther was added after 1.0, so if it isn't
5263                    // implemented we need to try to dispatch as a regular down.
5264                }
5265            }
5266            if (doDown) {
5267                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
5268                    return 2;
5269            }
5270        }
5271
5272        return 0;
5273    }
5274
5275    /**
5276     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
5277     * can be recorded.
5278     * @hide
5279     */
5280    public void resetErrorChangedFlag() {
5281        /*
5282         * Keep track of what the error was before doing the input
5283         * so that if an input filter changed the error, we leave
5284         * that error showing.  Otherwise, we take down whatever
5285         * error was showing when the user types something.
5286         */
5287        if (mEditor != null) mEditor.mErrorWasChanged = false;
5288    }
5289
5290    /**
5291     * @hide
5292     */
5293    public void hideErrorIfUnchanged() {
5294        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
5295            setError(null, null);
5296        }
5297    }
5298
5299    @Override
5300    public boolean onKeyUp(int keyCode, KeyEvent event) {
5301        if (!isEnabled()) {
5302            return super.onKeyUp(keyCode, event);
5303        }
5304
5305        switch (keyCode) {
5306            case KeyEvent.KEYCODE_DPAD_CENTER:
5307                if (event.hasNoModifiers()) {
5308                    /*
5309                     * If there is a click listener, just call through to
5310                     * super, which will invoke it.
5311                     *
5312                     * If there isn't a click listener, try to show the soft
5313                     * input method.  (It will also
5314                     * call performClick(), but that won't do anything in
5315                     * this case.)
5316                     */
5317                    if (!hasOnClickListeners()) {
5318                        if (mMovement != null && mText instanceof Editable
5319                                && mLayout != null && onCheckIsTextEditor()) {
5320                            InputMethodManager imm = InputMethodManager.peekInstance();
5321                            viewClicked(imm);
5322                            if (imm != null && getShowSoftInputOnFocus()) {
5323                                imm.showSoftInput(this, 0);
5324                            }
5325                        }
5326                    }
5327                }
5328                return super.onKeyUp(keyCode, event);
5329
5330            case KeyEvent.KEYCODE_ENTER:
5331                if (event.hasNoModifiers()) {
5332                    if (mEditor != null && mEditor.mInputContentType != null
5333                            && mEditor.mInputContentType.onEditorActionListener != null
5334                            && mEditor.mInputContentType.enterDown) {
5335                        mEditor.mInputContentType.enterDown = false;
5336                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5337                                this, EditorInfo.IME_NULL, event)) {
5338                            return true;
5339                        }
5340                    }
5341
5342                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5343                            || shouldAdvanceFocusOnEnter()) {
5344                        /*
5345                         * If there is a click listener, just call through to
5346                         * super, which will invoke it.
5347                         *
5348                         * If there isn't a click listener, try to advance focus,
5349                         * but still call through to super, which will reset the
5350                         * pressed state and longpress state.  (It will also
5351                         * call performClick(), but that won't do anything in
5352                         * this case.)
5353                         */
5354                        if (!hasOnClickListeners()) {
5355                            View v = focusSearch(FOCUS_DOWN);
5356
5357                            if (v != null) {
5358                                if (!v.requestFocus(FOCUS_DOWN)) {
5359                                    throw new IllegalStateException(
5360                                            "focus search returned a view " +
5361                                            "that wasn't able to take focus!");
5362                                }
5363
5364                                /*
5365                                 * Return true because we handled the key; super
5366                                 * will return false because there was no click
5367                                 * listener.
5368                                 */
5369                                super.onKeyUp(keyCode, event);
5370                                return true;
5371                            } else if ((event.getFlags()
5372                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
5373                                // No target for next focus, but make sure the IME
5374                                // if this came from it.
5375                                InputMethodManager imm = InputMethodManager.peekInstance();
5376                                if (imm != null && imm.isActive(this)) {
5377                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
5378                                }
5379                            }
5380                        }
5381                    }
5382                    return super.onKeyUp(keyCode, event);
5383                }
5384                break;
5385        }
5386
5387        if (mEditor != null && mEditor.mKeyListener != null)
5388            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
5389                return true;
5390
5391        if (mMovement != null && mLayout != null)
5392            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
5393                return true;
5394
5395        return super.onKeyUp(keyCode, event);
5396    }
5397
5398    @Override
5399    public boolean onCheckIsTextEditor() {
5400        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
5401    }
5402
5403    @Override
5404    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
5405        if (onCheckIsTextEditor() && isEnabled()) {
5406            mEditor.createInputMethodStateIfNeeded();
5407            outAttrs.inputType = getInputType();
5408            if (mEditor.mInputContentType != null) {
5409                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
5410                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
5411                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
5412                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
5413                outAttrs.extras = mEditor.mInputContentType.extras;
5414            } else {
5415                outAttrs.imeOptions = EditorInfo.IME_NULL;
5416            }
5417            if (focusSearch(FOCUS_DOWN) != null) {
5418                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
5419            }
5420            if (focusSearch(FOCUS_UP) != null) {
5421                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
5422            }
5423            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
5424                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
5425                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
5426                    // An action has not been set, but the enter key will move to
5427                    // the next focus, so set the action to that.
5428                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
5429                } else {
5430                    // An action has not been set, and there is no focus to move
5431                    // to, so let's just supply a "done" action.
5432                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
5433                }
5434                if (!shouldAdvanceFocusOnEnter()) {
5435                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5436                }
5437            }
5438            if (isMultilineInputType(outAttrs.inputType)) {
5439                // Multi-line text editors should always show an enter key.
5440                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5441            }
5442            outAttrs.hintText = mHint;
5443            if (mText instanceof Editable) {
5444                InputConnection ic = new EditableInputConnection(this);
5445                outAttrs.initialSelStart = getSelectionStart();
5446                outAttrs.initialSelEnd = getSelectionEnd();
5447                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
5448                return ic;
5449            }
5450        }
5451        return null;
5452    }
5453
5454    /**
5455     * If this TextView contains editable content, extract a portion of it
5456     * based on the information in <var>request</var> in to <var>outText</var>.
5457     * @return Returns true if the text was successfully extracted, else false.
5458     */
5459    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
5460        createEditorIfNeeded();
5461        return mEditor.extractText(request, outText);
5462    }
5463
5464    /**
5465     * This is used to remove all style-impacting spans from text before new
5466     * extracted text is being replaced into it, so that we don't have any
5467     * lingering spans applied during the replace.
5468     */
5469    static void removeParcelableSpans(Spannable spannable, int start, int end) {
5470        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
5471        int i = spans.length;
5472        while (i > 0) {
5473            i--;
5474            spannable.removeSpan(spans[i]);
5475        }
5476    }
5477
5478    /**
5479     * Apply to this text view the given extracted text, as previously
5480     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
5481     */
5482    public void setExtractedText(ExtractedText text) {
5483        Editable content = getEditableText();
5484        if (text.text != null) {
5485            if (content == null) {
5486                setText(text.text, TextView.BufferType.EDITABLE);
5487            } else if (text.partialStartOffset < 0) {
5488                removeParcelableSpans(content, 0, content.length());
5489                content.replace(0, content.length(), text.text);
5490            } else {
5491                final int N = content.length();
5492                int start = text.partialStartOffset;
5493                if (start > N) start = N;
5494                int end = text.partialEndOffset;
5495                if (end > N) end = N;
5496                removeParcelableSpans(content, start, end);
5497                content.replace(start, end, text.text);
5498            }
5499        }
5500
5501        // Now set the selection position...  make sure it is in range, to
5502        // avoid crashes.  If this is a partial update, it is possible that
5503        // the underlying text may have changed, causing us problems here.
5504        // Also we just don't want to trust clients to do the right thing.
5505        Spannable sp = (Spannable)getText();
5506        final int N = sp.length();
5507        int start = text.selectionStart;
5508        if (start < 0) start = 0;
5509        else if (start > N) start = N;
5510        int end = text.selectionEnd;
5511        if (end < 0) end = 0;
5512        else if (end > N) end = N;
5513        Selection.setSelection(sp, start, end);
5514
5515        // Finally, update the selection mode.
5516        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
5517            MetaKeyKeyListener.startSelecting(this, sp);
5518        } else {
5519            MetaKeyKeyListener.stopSelecting(this, sp);
5520        }
5521    }
5522
5523    /**
5524     * @hide
5525     */
5526    public void setExtracting(ExtractedTextRequest req) {
5527        if (mEditor.mInputMethodState != null) {
5528            mEditor.mInputMethodState.mExtractedTextRequest = req;
5529        }
5530        // This would stop a possible selection mode, but no such mode is started in case
5531        // extracted mode will start. Some text is selected though, and will trigger an action mode
5532        // in the extracted view.
5533        mEditor.hideControllers();
5534    }
5535
5536    /**
5537     * Called by the framework in response to a text completion from
5538     * the current input method, provided by it calling
5539     * {@link InputConnection#commitCompletion
5540     * InputConnection.commitCompletion()}.  The default implementation does
5541     * nothing; text views that are supporting auto-completion should override
5542     * this to do their desired behavior.
5543     *
5544     * @param text The auto complete text the user has selected.
5545     */
5546    public void onCommitCompletion(CompletionInfo text) {
5547        // intentionally empty
5548    }
5549
5550    /**
5551     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
5552     * a dictionnary) from the current input method, provided by it calling
5553     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
5554     * implementation flashes the background of the corrected word to provide feedback to the user.
5555     *
5556     * @param info The auto correct info about the text that was corrected.
5557     */
5558    public void onCommitCorrection(CorrectionInfo info) {
5559        if (mEditor != null) mEditor.onCommitCorrection(info);
5560    }
5561
5562    public void beginBatchEdit() {
5563        if (mEditor != null) mEditor.beginBatchEdit();
5564    }
5565
5566    public void endBatchEdit() {
5567        if (mEditor != null) mEditor.endBatchEdit();
5568    }
5569
5570    /**
5571     * Called by the framework in response to a request to begin a batch
5572     * of edit operations through a call to link {@link #beginBatchEdit()}.
5573     */
5574    public void onBeginBatchEdit() {
5575        // intentionally empty
5576    }
5577
5578    /**
5579     * Called by the framework in response to a request to end a batch
5580     * of edit operations through a call to link {@link #endBatchEdit}.
5581     */
5582    public void onEndBatchEdit() {
5583        // intentionally empty
5584    }
5585
5586    /**
5587     * Called by the framework in response to a private command from the
5588     * current method, provided by it calling
5589     * {@link InputConnection#performPrivateCommand
5590     * InputConnection.performPrivateCommand()}.
5591     *
5592     * @param action The action name of the command.
5593     * @param data Any additional data for the command.  This may be null.
5594     * @return Return true if you handled the command, else false.
5595     */
5596    public boolean onPrivateIMECommand(String action, Bundle data) {
5597        return false;
5598    }
5599
5600    private void nullLayouts() {
5601        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
5602            mSavedLayout = (BoringLayout) mLayout;
5603        }
5604        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
5605            mSavedHintLayout = (BoringLayout) mHintLayout;
5606        }
5607
5608        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
5609
5610        mBoring = mHintBoring = null;
5611
5612        // Since it depends on the value of mLayout
5613        if (mEditor != null) mEditor.prepareCursorControllers();
5614    }
5615
5616    /**
5617     * Make a new Layout based on the already-measured size of the view,
5618     * on the assumption that it was measured correctly at some point.
5619     */
5620    private void assumeLayout() {
5621        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5622
5623        if (width < 1) {
5624            width = 0;
5625        }
5626
5627        int physicalWidth = width;
5628
5629        if (mHorizontallyScrolling) {
5630            width = VERY_WIDE;
5631        }
5632
5633        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
5634                      physicalWidth, false);
5635    }
5636
5637    @Override
5638    public void onRtlPropertiesChanged() {
5639        if (mLayoutAlignment != null) {
5640            if (mResolvedTextAlignment == TEXT_ALIGNMENT_VIEW_START ||
5641                    mResolvedTextAlignment == TEXT_ALIGNMENT_VIEW_END) {
5642                mLayoutAlignment = null;
5643            }
5644        }
5645    }
5646
5647    private Layout.Alignment getLayoutAlignment() {
5648        if (mLayoutAlignment == null) {
5649            mResolvedTextAlignment = getResolvedTextAlignment();
5650            switch (mResolvedTextAlignment) {
5651                case TEXT_ALIGNMENT_GRAVITY:
5652                    switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
5653                        case Gravity.START:
5654                            mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5655                            break;
5656                        case Gravity.END:
5657                            mLayoutAlignment = Layout.Alignment.ALIGN_OPPOSITE;
5658                            break;
5659                        case Gravity.LEFT:
5660                            mLayoutAlignment = Layout.Alignment.ALIGN_LEFT;
5661                            break;
5662                        case Gravity.RIGHT:
5663                            mLayoutAlignment = Layout.Alignment.ALIGN_RIGHT;
5664                            break;
5665                        case Gravity.CENTER_HORIZONTAL:
5666                            mLayoutAlignment = Layout.Alignment.ALIGN_CENTER;
5667                            break;
5668                        default:
5669                            mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5670                            break;
5671                    }
5672                    break;
5673                case TEXT_ALIGNMENT_TEXT_START:
5674                    mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5675                    break;
5676                case TEXT_ALIGNMENT_TEXT_END:
5677                    mLayoutAlignment = Layout.Alignment.ALIGN_OPPOSITE;
5678                    break;
5679                case TEXT_ALIGNMENT_CENTER:
5680                    mLayoutAlignment = Layout.Alignment.ALIGN_CENTER;
5681                    break;
5682                case TEXT_ALIGNMENT_VIEW_START:
5683                    mLayoutAlignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
5684                            Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
5685                    break;
5686                case TEXT_ALIGNMENT_VIEW_END:
5687                    mLayoutAlignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
5688                            Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
5689                    break;
5690                case TEXT_ALIGNMENT_INHERIT:
5691                    // This should never happen as we have already resolved the text alignment
5692                    // but better safe than sorry so we just fall through
5693                default:
5694                    mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5695                    break;
5696            }
5697        }
5698        return mLayoutAlignment;
5699    }
5700
5701    /**
5702     * The width passed in is now the desired layout width,
5703     * not the full view width with padding.
5704     * {@hide}
5705     */
5706    protected void makeNewLayout(int wantWidth, int hintWidth,
5707                                 BoringLayout.Metrics boring,
5708                                 BoringLayout.Metrics hintBoring,
5709                                 int ellipsisWidth, boolean bringIntoView) {
5710        stopMarquee();
5711
5712        // Update "old" cached values
5713        mOldMaximum = mMaximum;
5714        mOldMaxMode = mMaxMode;
5715
5716        mHighlightPathBogus = true;
5717
5718        if (wantWidth < 0) {
5719            wantWidth = 0;
5720        }
5721        if (hintWidth < 0) {
5722            hintWidth = 0;
5723        }
5724
5725        Layout.Alignment alignment = getLayoutAlignment();
5726        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
5727        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
5728                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
5729        TruncateAt effectiveEllipsize = mEllipsize;
5730        if (mEllipsize == TruncateAt.MARQUEE &&
5731                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5732            effectiveEllipsize = TruncateAt.END_SMALL;
5733        }
5734
5735        if (mTextDir == null) {
5736            mTextDir = getTextDirectionHeuristic();
5737        }
5738
5739        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
5740                effectiveEllipsize, effectiveEllipsize == mEllipsize);
5741        if (switchEllipsize) {
5742            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
5743                    TruncateAt.END : TruncateAt.MARQUEE;
5744            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
5745                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
5746        }
5747
5748        shouldEllipsize = mEllipsize != null;
5749        mHintLayout = null;
5750
5751        if (mHint != null) {
5752            if (shouldEllipsize) hintWidth = wantWidth;
5753
5754            if (hintBoring == UNKNOWN_BORING) {
5755                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
5756                                                   mHintBoring);
5757                if (hintBoring != null) {
5758                    mHintBoring = hintBoring;
5759                }
5760            }
5761
5762            if (hintBoring != null) {
5763                if (hintBoring.width <= hintWidth &&
5764                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
5765                    if (mSavedHintLayout != null) {
5766                        mHintLayout = mSavedHintLayout.
5767                                replaceOrMake(mHint, mTextPaint,
5768                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5769                                hintBoring, mIncludePad);
5770                    } else {
5771                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5772                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5773                                hintBoring, mIncludePad);
5774                    }
5775
5776                    mSavedHintLayout = (BoringLayout) mHintLayout;
5777                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
5778                    if (mSavedHintLayout != null) {
5779                        mHintLayout = mSavedHintLayout.
5780                                replaceOrMake(mHint, mTextPaint,
5781                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5782                                hintBoring, mIncludePad, mEllipsize,
5783                                ellipsisWidth);
5784                    } else {
5785                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5786                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5787                                hintBoring, mIncludePad, mEllipsize,
5788                                ellipsisWidth);
5789                    }
5790                } else if (shouldEllipsize) {
5791                    mHintLayout = new StaticLayout(mHint,
5792                                0, mHint.length(),
5793                                mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5794                                mSpacingAdd, mIncludePad, mEllipsize,
5795                                ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5796                } else {
5797                    mHintLayout = new StaticLayout(mHint, mTextPaint,
5798                            hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5799                            mIncludePad);
5800                }
5801            } else if (shouldEllipsize) {
5802                mHintLayout = new StaticLayout(mHint,
5803                            0, mHint.length(),
5804                            mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5805                            mSpacingAdd, mIncludePad, mEllipsize,
5806                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5807            } else {
5808                mHintLayout = new StaticLayout(mHint, mTextPaint,
5809                        hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5810                        mIncludePad);
5811            }
5812        }
5813
5814        if (bringIntoView) {
5815            registerForPreDraw();
5816        }
5817
5818        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5819            if (!compressText(ellipsisWidth)) {
5820                final int height = mLayoutParams.height;
5821                // If the size of the view does not depend on the size of the text, try to
5822                // start the marquee immediately
5823                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
5824                    startMarquee();
5825                } else {
5826                    // Defer the start of the marquee until we know our width (see setFrame())
5827                    mRestartMarquee = true;
5828                }
5829            }
5830        }
5831
5832        // CursorControllers need a non-null mLayout
5833        if (mEditor != null) mEditor.prepareCursorControllers();
5834    }
5835
5836    private Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
5837            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
5838            boolean useSaved) {
5839        Layout result = null;
5840        if (mText instanceof Spannable) {
5841            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
5842                    alignment, mTextDir, mSpacingMult,
5843                    mSpacingAdd, mIncludePad, getKeyListener() == null ? effectiveEllipsize : null,
5844                            ellipsisWidth);
5845        } else {
5846            if (boring == UNKNOWN_BORING) {
5847                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
5848                if (boring != null) {
5849                    mBoring = boring;
5850                }
5851            }
5852
5853            if (boring != null) {
5854                if (boring.width <= wantWidth &&
5855                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
5856                    if (useSaved && mSavedLayout != null) {
5857                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
5858                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5859                                boring, mIncludePad);
5860                    } else {
5861                        result = BoringLayout.make(mTransformed, mTextPaint,
5862                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5863                                boring, mIncludePad);
5864                    }
5865
5866                    if (useSaved) {
5867                        mSavedLayout = (BoringLayout) result;
5868                    }
5869                } else if (shouldEllipsize && boring.width <= wantWidth) {
5870                    if (useSaved && mSavedLayout != null) {
5871                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
5872                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5873                                boring, mIncludePad, effectiveEllipsize,
5874                                ellipsisWidth);
5875                    } else {
5876                        result = BoringLayout.make(mTransformed, mTextPaint,
5877                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5878                                boring, mIncludePad, effectiveEllipsize,
5879                                ellipsisWidth);
5880                    }
5881                } else if (shouldEllipsize) {
5882                    result = new StaticLayout(mTransformed,
5883                            0, mTransformed.length(),
5884                            mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
5885                            mSpacingAdd, mIncludePad, effectiveEllipsize,
5886                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5887                } else {
5888                    result = new StaticLayout(mTransformed, mTextPaint,
5889                            wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5890                            mIncludePad);
5891                }
5892            } else if (shouldEllipsize) {
5893                result = new StaticLayout(mTransformed,
5894                        0, mTransformed.length(),
5895                        mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
5896                        mSpacingAdd, mIncludePad, effectiveEllipsize,
5897                        ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5898            } else {
5899                result = new StaticLayout(mTransformed, mTextPaint,
5900                        wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5901                        mIncludePad);
5902            }
5903        }
5904        return result;
5905    }
5906
5907    private boolean compressText(float width) {
5908        if (isHardwareAccelerated()) return false;
5909
5910        // Only compress the text if it hasn't been compressed by the previous pass
5911        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
5912                mTextPaint.getTextScaleX() == 1.0f) {
5913            final float textWidth = mLayout.getLineWidth(0);
5914            final float overflow = (textWidth + 1.0f - width) / width;
5915            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
5916                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
5917                post(new Runnable() {
5918                    public void run() {
5919                        requestLayout();
5920                    }
5921                });
5922                return true;
5923            }
5924        }
5925
5926        return false;
5927    }
5928
5929    private static int desired(Layout layout) {
5930        int n = layout.getLineCount();
5931        CharSequence text = layout.getText();
5932        float max = 0;
5933
5934        // if any line was wrapped, we can't use it.
5935        // but it's ok for the last line not to have a newline
5936
5937        for (int i = 0; i < n - 1; i++) {
5938            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
5939                return -1;
5940        }
5941
5942        for (int i = 0; i < n; i++) {
5943            max = Math.max(max, layout.getLineWidth(i));
5944        }
5945
5946        return (int) FloatMath.ceil(max);
5947    }
5948
5949    /**
5950     * Set whether the TextView includes extra top and bottom padding to make
5951     * room for accents that go above the normal ascent and descent.
5952     * The default is true.
5953     *
5954     * @see #getIncludeFontPadding()
5955     *
5956     * @attr ref android.R.styleable#TextView_includeFontPadding
5957     */
5958    public void setIncludeFontPadding(boolean includepad) {
5959        if (mIncludePad != includepad) {
5960            mIncludePad = includepad;
5961
5962            if (mLayout != null) {
5963                nullLayouts();
5964                requestLayout();
5965                invalidate();
5966            }
5967        }
5968    }
5969
5970    /**
5971     * Gets whether the TextView includes extra top and bottom padding to make
5972     * room for accents that go above the normal ascent and descent.
5973     *
5974     * @see #setIncludeFontPadding(boolean)
5975     *
5976     * @attr ref android.R.styleable#TextView_includeFontPadding
5977     */
5978    public boolean getIncludeFontPadding() {
5979        return mIncludePad;
5980    }
5981
5982    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
5983
5984    @Override
5985    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
5986        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
5987        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
5988        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
5989        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
5990
5991        int width;
5992        int height;
5993
5994        BoringLayout.Metrics boring = UNKNOWN_BORING;
5995        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
5996
5997        if (mTextDir == null) {
5998            getTextDirectionHeuristic();
5999        }
6000
6001        int des = -1;
6002        boolean fromexisting = false;
6003
6004        if (widthMode == MeasureSpec.EXACTLY) {
6005            // Parent has told us how big to be. So be it.
6006            width = widthSize;
6007        } else {
6008            if (mLayout != null && mEllipsize == null) {
6009                des = desired(mLayout);
6010            }
6011
6012            if (des < 0) {
6013                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6014                if (boring != null) {
6015                    mBoring = boring;
6016                }
6017            } else {
6018                fromexisting = true;
6019            }
6020
6021            if (boring == null || boring == UNKNOWN_BORING) {
6022                if (des < 0) {
6023                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
6024                }
6025                width = des;
6026            } else {
6027                width = boring.width;
6028            }
6029
6030            final Drawables dr = mDrawables;
6031            if (dr != null) {
6032                width = Math.max(width, dr.mDrawableWidthTop);
6033                width = Math.max(width, dr.mDrawableWidthBottom);
6034            }
6035
6036            if (mHint != null) {
6037                int hintDes = -1;
6038                int hintWidth;
6039
6040                if (mHintLayout != null && mEllipsize == null) {
6041                    hintDes = desired(mHintLayout);
6042                }
6043
6044                if (hintDes < 0) {
6045                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
6046                    if (hintBoring != null) {
6047                        mHintBoring = hintBoring;
6048                    }
6049                }
6050
6051                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
6052                    if (hintDes < 0) {
6053                        hintDes = (int) FloatMath.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
6054                    }
6055                    hintWidth = hintDes;
6056                } else {
6057                    hintWidth = hintBoring.width;
6058                }
6059
6060                if (hintWidth > width) {
6061                    width = hintWidth;
6062                }
6063            }
6064
6065            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
6066
6067            if (mMaxWidthMode == EMS) {
6068                width = Math.min(width, mMaxWidth * getLineHeight());
6069            } else {
6070                width = Math.min(width, mMaxWidth);
6071            }
6072
6073            if (mMinWidthMode == EMS) {
6074                width = Math.max(width, mMinWidth * getLineHeight());
6075            } else {
6076                width = Math.max(width, mMinWidth);
6077            }
6078
6079            // Check against our minimum width
6080            width = Math.max(width, getSuggestedMinimumWidth());
6081
6082            if (widthMode == MeasureSpec.AT_MOST) {
6083                width = Math.min(widthSize, width);
6084            }
6085        }
6086
6087        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
6088        int unpaddedWidth = want;
6089
6090        if (mHorizontallyScrolling) want = VERY_WIDE;
6091
6092        int hintWant = want;
6093        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
6094
6095        if (mLayout == null) {
6096            makeNewLayout(want, hintWant, boring, hintBoring,
6097                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6098        } else {
6099            final boolean layoutChanged = (mLayout.getWidth() != want) ||
6100                    (hintWidth != hintWant) ||
6101                    (mLayout.getEllipsizedWidth() !=
6102                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
6103
6104            final boolean widthChanged = (mHint == null) &&
6105                    (mEllipsize == null) &&
6106                    (want > mLayout.getWidth()) &&
6107                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
6108
6109            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
6110
6111            if (layoutChanged || maximumChanged) {
6112                if (!maximumChanged && widthChanged) {
6113                    mLayout.increaseWidthTo(want);
6114                } else {
6115                    makeNewLayout(want, hintWant, boring, hintBoring,
6116                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6117                }
6118            } else {
6119                // Nothing has changed
6120            }
6121        }
6122
6123        if (heightMode == MeasureSpec.EXACTLY) {
6124            // Parent has told us how big to be. So be it.
6125            height = heightSize;
6126            mDesiredHeightAtMeasure = -1;
6127        } else {
6128            int desired = getDesiredHeight();
6129
6130            height = desired;
6131            mDesiredHeightAtMeasure = desired;
6132
6133            if (heightMode == MeasureSpec.AT_MOST) {
6134                height = Math.min(desired, heightSize);
6135            }
6136        }
6137
6138        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
6139        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
6140            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
6141        }
6142
6143        /*
6144         * We didn't let makeNewLayout() register to bring the cursor into view,
6145         * so do it here if there is any possibility that it is needed.
6146         */
6147        if (mMovement != null ||
6148            mLayout.getWidth() > unpaddedWidth ||
6149            mLayout.getHeight() > unpaddedHeight) {
6150            registerForPreDraw();
6151        } else {
6152            scrollTo(0, 0);
6153        }
6154
6155        setMeasuredDimension(width, height);
6156    }
6157
6158    private int getDesiredHeight() {
6159        return Math.max(
6160                getDesiredHeight(mLayout, true),
6161                getDesiredHeight(mHintLayout, mEllipsize != null));
6162    }
6163
6164    private int getDesiredHeight(Layout layout, boolean cap) {
6165        if (layout == null) {
6166            return 0;
6167        }
6168
6169        int linecount = layout.getLineCount();
6170        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
6171        int desired = layout.getLineTop(linecount);
6172
6173        final Drawables dr = mDrawables;
6174        if (dr != null) {
6175            desired = Math.max(desired, dr.mDrawableHeightLeft);
6176            desired = Math.max(desired, dr.mDrawableHeightRight);
6177        }
6178
6179        desired += pad;
6180
6181        if (mMaxMode == LINES) {
6182            /*
6183             * Don't cap the hint to a certain number of lines.
6184             * (Do cap it, though, if we have a maximum pixel height.)
6185             */
6186            if (cap) {
6187                if (linecount > mMaximum) {
6188                    desired = layout.getLineTop(mMaximum);
6189
6190                    if (dr != null) {
6191                        desired = Math.max(desired, dr.mDrawableHeightLeft);
6192                        desired = Math.max(desired, dr.mDrawableHeightRight);
6193                    }
6194
6195                    desired += pad;
6196                    linecount = mMaximum;
6197                }
6198            }
6199        } else {
6200            desired = Math.min(desired, mMaximum);
6201        }
6202
6203        if (mMinMode == LINES) {
6204            if (linecount < mMinimum) {
6205                desired += getLineHeight() * (mMinimum - linecount);
6206            }
6207        } else {
6208            desired = Math.max(desired, mMinimum);
6209        }
6210
6211        // Check against our minimum height
6212        desired = Math.max(desired, getSuggestedMinimumHeight());
6213
6214        return desired;
6215    }
6216
6217    /**
6218     * Check whether a change to the existing text layout requires a
6219     * new view layout.
6220     */
6221    private void checkForResize() {
6222        boolean sizeChanged = false;
6223
6224        if (mLayout != null) {
6225            // Check if our width changed
6226            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
6227                sizeChanged = true;
6228                invalidate();
6229            }
6230
6231            // Check if our height changed
6232            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
6233                int desiredHeight = getDesiredHeight();
6234
6235                if (desiredHeight != this.getHeight()) {
6236                    sizeChanged = true;
6237                }
6238            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
6239                if (mDesiredHeightAtMeasure >= 0) {
6240                    int desiredHeight = getDesiredHeight();
6241
6242                    if (desiredHeight != mDesiredHeightAtMeasure) {
6243                        sizeChanged = true;
6244                    }
6245                }
6246            }
6247        }
6248
6249        if (sizeChanged) {
6250            requestLayout();
6251            // caller will have already invalidated
6252        }
6253    }
6254
6255    /**
6256     * Check whether entirely new text requires a new view layout
6257     * or merely a new text layout.
6258     */
6259    private void checkForRelayout() {
6260        // If we have a fixed width, we can just swap in a new text layout
6261        // if the text height stays the same or if the view height is fixed.
6262
6263        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
6264                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
6265                (mHint == null || mHintLayout != null) &&
6266                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
6267            // Static width, so try making a new text layout.
6268
6269            int oldht = mLayout.getHeight();
6270            int want = mLayout.getWidth();
6271            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
6272
6273            /*
6274             * No need to bring the text into view, since the size is not
6275             * changing (unless we do the requestLayout(), in which case it
6276             * will happen at measure).
6277             */
6278            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
6279                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
6280                          false);
6281
6282            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
6283                // In a fixed-height view, so use our new text layout.
6284                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
6285                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
6286                    invalidate();
6287                    return;
6288                }
6289
6290                // Dynamic height, but height has stayed the same,
6291                // so use our new text layout.
6292                if (mLayout.getHeight() == oldht &&
6293                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
6294                    invalidate();
6295                    return;
6296                }
6297            }
6298
6299            // We lose: the height has changed and we have a dynamic height.
6300            // Request a new view layout using our new text layout.
6301            requestLayout();
6302            invalidate();
6303        } else {
6304            // Dynamic width, so we have no choice but to request a new
6305            // view layout with a new text layout.
6306            nullLayouts();
6307            requestLayout();
6308            invalidate();
6309        }
6310    }
6311
6312    @Override
6313    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
6314        super.onLayout(changed, left, top, right, bottom);
6315        if (changed && mEditor != null) mEditor.invalidateTextDisplayList();
6316    }
6317
6318    private boolean isShowingHint() {
6319        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
6320    }
6321
6322    /**
6323     * Returns true if anything changed.
6324     */
6325    private boolean bringTextIntoView() {
6326        Layout layout = isShowingHint() ? mHintLayout : mLayout;
6327        int line = 0;
6328        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6329            line = layout.getLineCount() - 1;
6330        }
6331
6332        Layout.Alignment a = layout.getParagraphAlignment(line);
6333        int dir = layout.getParagraphDirection(line);
6334        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6335        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6336        int ht = layout.getHeight();
6337
6338        int scrollx, scrolly;
6339
6340        // Convert to left, center, or right alignment.
6341        if (a == Layout.Alignment.ALIGN_NORMAL) {
6342            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
6343                Layout.Alignment.ALIGN_RIGHT;
6344        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
6345            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
6346                Layout.Alignment.ALIGN_LEFT;
6347        }
6348
6349        if (a == Layout.Alignment.ALIGN_CENTER) {
6350            /*
6351             * Keep centered if possible, or, if it is too wide to fit,
6352             * keep leading edge in view.
6353             */
6354
6355            int left = (int) FloatMath.floor(layout.getLineLeft(line));
6356            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6357
6358            if (right - left < hspace) {
6359                scrollx = (right + left) / 2 - hspace / 2;
6360            } else {
6361                if (dir < 0) {
6362                    scrollx = right - hspace;
6363                } else {
6364                    scrollx = left;
6365                }
6366            }
6367        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
6368            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6369            scrollx = right - hspace;
6370        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
6371            scrollx = (int) FloatMath.floor(layout.getLineLeft(line));
6372        }
6373
6374        if (ht < vspace) {
6375            scrolly = 0;
6376        } else {
6377            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6378                scrolly = ht - vspace;
6379            } else {
6380                scrolly = 0;
6381            }
6382        }
6383
6384        if (scrollx != mScrollX || scrolly != mScrollY) {
6385            scrollTo(scrollx, scrolly);
6386            return true;
6387        } else {
6388            return false;
6389        }
6390    }
6391
6392    /**
6393     * Move the point, specified by the offset, into the view if it is needed.
6394     * This has to be called after layout. Returns true if anything changed.
6395     */
6396    public boolean bringPointIntoView(int offset) {
6397        boolean changed = false;
6398
6399        Layout layout = isShowingHint() ? mHintLayout: mLayout;
6400
6401        if (layout == null) return changed;
6402
6403        int line = layout.getLineForOffset(offset);
6404
6405        // FIXME: Is it okay to truncate this, or should we round?
6406        final int x = (int)layout.getPrimaryHorizontal(offset);
6407        final int top = layout.getLineTop(line);
6408        final int bottom = layout.getLineTop(line + 1);
6409
6410        int left = (int) FloatMath.floor(layout.getLineLeft(line));
6411        int right = (int) FloatMath.ceil(layout.getLineRight(line));
6412        int ht = layout.getHeight();
6413
6414        int grav;
6415
6416        switch (layout.getParagraphAlignment(line)) {
6417            case ALIGN_LEFT:
6418                grav = 1;
6419                break;
6420            case ALIGN_RIGHT:
6421                grav = -1;
6422                break;
6423            case ALIGN_NORMAL:
6424                grav = layout.getParagraphDirection(line);
6425                break;
6426            case ALIGN_OPPOSITE:
6427                grav = -layout.getParagraphDirection(line);
6428                break;
6429            case ALIGN_CENTER:
6430            default:
6431                grav = 0;
6432                break;
6433        }
6434
6435        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6436        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6437
6438        int hslack = (bottom - top) / 2;
6439        int vslack = hslack;
6440
6441        if (vslack > vspace / 4)
6442            vslack = vspace / 4;
6443        if (hslack > hspace / 4)
6444            hslack = hspace / 4;
6445
6446        int hs = mScrollX;
6447        int vs = mScrollY;
6448
6449        if (top - vs < vslack)
6450            vs = top - vslack;
6451        if (bottom - vs > vspace - vslack)
6452            vs = bottom - (vspace - vslack);
6453        if (ht - vs < vspace)
6454            vs = ht - vspace;
6455        if (0 - vs > 0)
6456            vs = 0;
6457
6458        if (grav != 0) {
6459            if (x - hs < hslack) {
6460                hs = x - hslack;
6461            }
6462            if (x - hs > hspace - hslack) {
6463                hs = x - (hspace - hslack);
6464            }
6465        }
6466
6467        if (grav < 0) {
6468            if (left - hs > 0)
6469                hs = left;
6470            if (right - hs < hspace)
6471                hs = right - hspace;
6472        } else if (grav > 0) {
6473            if (right - hs < hspace)
6474                hs = right - hspace;
6475            if (left - hs > 0)
6476                hs = left;
6477        } else /* grav == 0 */ {
6478            if (right - left <= hspace) {
6479                /*
6480                 * If the entire text fits, center it exactly.
6481                 */
6482                hs = left - (hspace - (right - left)) / 2;
6483            } else if (x > right - hslack) {
6484                /*
6485                 * If we are near the right edge, keep the right edge
6486                 * at the edge of the view.
6487                 */
6488                hs = right - hspace;
6489            } else if (x < left + hslack) {
6490                /*
6491                 * If we are near the left edge, keep the left edge
6492                 * at the edge of the view.
6493                 */
6494                hs = left;
6495            } else if (left > hs) {
6496                /*
6497                 * Is there whitespace visible at the left?  Fix it if so.
6498                 */
6499                hs = left;
6500            } else if (right < hs + hspace) {
6501                /*
6502                 * Is there whitespace visible at the right?  Fix it if so.
6503                 */
6504                hs = right - hspace;
6505            } else {
6506                /*
6507                 * Otherwise, float as needed.
6508                 */
6509                if (x - hs < hslack) {
6510                    hs = x - hslack;
6511                }
6512                if (x - hs > hspace - hslack) {
6513                    hs = x - (hspace - hslack);
6514                }
6515            }
6516        }
6517
6518        if (hs != mScrollX || vs != mScrollY) {
6519            if (mScroller == null) {
6520                scrollTo(hs, vs);
6521            } else {
6522                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
6523                int dx = hs - mScrollX;
6524                int dy = vs - mScrollY;
6525
6526                if (duration > ANIMATED_SCROLL_GAP) {
6527                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
6528                    awakenScrollBars(mScroller.getDuration());
6529                    invalidate();
6530                } else {
6531                    if (!mScroller.isFinished()) {
6532                        mScroller.abortAnimation();
6533                    }
6534
6535                    scrollBy(dx, dy);
6536                }
6537
6538                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
6539            }
6540
6541            changed = true;
6542        }
6543
6544        if (isFocused()) {
6545            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
6546            // requestRectangleOnScreen() is in terms of content coordinates.
6547
6548            // The offsets here are to ensure the rectangle we are using is
6549            // within our view bounds, in case the cursor is on the far left
6550            // or right.  If it isn't withing the bounds, then this request
6551            // will be ignored.
6552            if (mTempRect == null) mTempRect = new Rect();
6553            mTempRect.set(x - 2, top, x + 2, bottom);
6554            getInterestingRect(mTempRect, line);
6555            mTempRect.offset(mScrollX, mScrollY);
6556
6557            if (requestRectangleOnScreen(mTempRect)) {
6558                changed = true;
6559            }
6560        }
6561
6562        return changed;
6563    }
6564
6565    /**
6566     * Move the cursor, if needed, so that it is at an offset that is visible
6567     * to the user.  This will not move the cursor if it represents more than
6568     * one character (a selection range).  This will only work if the
6569     * TextView contains spannable text; otherwise it will do nothing.
6570     *
6571     * @return True if the cursor was actually moved, false otherwise.
6572     */
6573    public boolean moveCursorToVisibleOffset() {
6574        if (!(mText instanceof Spannable)) {
6575            return false;
6576        }
6577        int start = getSelectionStart();
6578        int end = getSelectionEnd();
6579        if (start != end) {
6580            return false;
6581        }
6582
6583        // First: make sure the line is visible on screen:
6584
6585        int line = mLayout.getLineForOffset(start);
6586
6587        final int top = mLayout.getLineTop(line);
6588        final int bottom = mLayout.getLineTop(line + 1);
6589        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6590        int vslack = (bottom - top) / 2;
6591        if (vslack > vspace / 4)
6592            vslack = vspace / 4;
6593        final int vs = mScrollY;
6594
6595        if (top < (vs+vslack)) {
6596            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
6597        } else if (bottom > (vspace+vs-vslack)) {
6598            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
6599        }
6600
6601        // Next: make sure the character is visible on screen:
6602
6603        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6604        final int hs = mScrollX;
6605        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
6606        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
6607
6608        // line might contain bidirectional text
6609        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
6610        final int highChar = leftChar > rightChar ? leftChar : rightChar;
6611
6612        int newStart = start;
6613        if (newStart < lowChar) {
6614            newStart = lowChar;
6615        } else if (newStart > highChar) {
6616            newStart = highChar;
6617        }
6618
6619        if (newStart != start) {
6620            Selection.setSelection((Spannable)mText, newStart);
6621            return true;
6622        }
6623
6624        return false;
6625    }
6626
6627    @Override
6628    public void computeScroll() {
6629        if (mScroller != null) {
6630            if (mScroller.computeScrollOffset()) {
6631                mScrollX = mScroller.getCurrX();
6632                mScrollY = mScroller.getCurrY();
6633                invalidateParentCaches();
6634                postInvalidate();  // So we draw again
6635            }
6636        }
6637    }
6638
6639    private void getInterestingRect(Rect r, int line) {
6640        convertFromViewportToContentCoordinates(r);
6641
6642        // Rectangle can can be expanded on first and last line to take
6643        // padding into account.
6644        // TODO Take left/right padding into account too?
6645        if (line == 0) r.top -= getExtendedPaddingTop();
6646        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
6647    }
6648
6649    private void convertFromViewportToContentCoordinates(Rect r) {
6650        final int horizontalOffset = viewportToContentHorizontalOffset();
6651        r.left += horizontalOffset;
6652        r.right += horizontalOffset;
6653
6654        final int verticalOffset = viewportToContentVerticalOffset();
6655        r.top += verticalOffset;
6656        r.bottom += verticalOffset;
6657    }
6658
6659    int viewportToContentHorizontalOffset() {
6660        return getCompoundPaddingLeft() - mScrollX;
6661    }
6662
6663    int viewportToContentVerticalOffset() {
6664        int offset = getExtendedPaddingTop() - mScrollY;
6665        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6666            offset += getVerticalOffset(false);
6667        }
6668        return offset;
6669    }
6670
6671    @Override
6672    public void debug(int depth) {
6673        super.debug(depth);
6674
6675        String output = debugIndent(depth);
6676        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
6677                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
6678                + "} ";
6679
6680        if (mText != null) {
6681
6682            output += "mText=\"" + mText + "\" ";
6683            if (mLayout != null) {
6684                output += "mLayout width=" + mLayout.getWidth()
6685                        + " height=" + mLayout.getHeight();
6686            }
6687        } else {
6688            output += "mText=NULL";
6689        }
6690        Log.d(VIEW_LOG_TAG, output);
6691    }
6692
6693    /**
6694     * Convenience for {@link Selection#getSelectionStart}.
6695     */
6696    @ViewDebug.ExportedProperty(category = "text")
6697    public int getSelectionStart() {
6698        return Selection.getSelectionStart(getText());
6699    }
6700
6701    /**
6702     * Convenience for {@link Selection#getSelectionEnd}.
6703     */
6704    @ViewDebug.ExportedProperty(category = "text")
6705    public int getSelectionEnd() {
6706        return Selection.getSelectionEnd(getText());
6707    }
6708
6709    /**
6710     * Return true iff there is a selection inside this text view.
6711     */
6712    public boolean hasSelection() {
6713        final int selectionStart = getSelectionStart();
6714        final int selectionEnd = getSelectionEnd();
6715
6716        return selectionStart >= 0 && selectionStart != selectionEnd;
6717    }
6718
6719    /**
6720     * Sets the properties of this field (lines, horizontally scrolling,
6721     * transformation method) to be for a single-line input.
6722     *
6723     * @attr ref android.R.styleable#TextView_singleLine
6724     */
6725    public void setSingleLine() {
6726        setSingleLine(true);
6727    }
6728
6729    /**
6730     * Sets the properties of this field to transform input to ALL CAPS
6731     * display. This may use a "small caps" formatting if available.
6732     * This setting will be ignored if this field is editable or selectable.
6733     *
6734     * This call replaces the current transformation method. Disabling this
6735     * will not necessarily restore the previous behavior from before this
6736     * was enabled.
6737     *
6738     * @see #setTransformationMethod(TransformationMethod)
6739     * @attr ref android.R.styleable#TextView_textAllCaps
6740     */
6741    public void setAllCaps(boolean allCaps) {
6742        if (allCaps) {
6743            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
6744        } else {
6745            setTransformationMethod(null);
6746        }
6747    }
6748
6749    /**
6750     * If true, sets the properties of this field (number of lines, horizontally scrolling,
6751     * transformation method) to be for a single-line input; if false, restores these to the default
6752     * conditions.
6753     *
6754     * Note that the default conditions are not necessarily those that were in effect prior this
6755     * method, and you may want to reset these properties to your custom values.
6756     *
6757     * @attr ref android.R.styleable#TextView_singleLine
6758     */
6759    @android.view.RemotableViewMethod
6760    public void setSingleLine(boolean singleLine) {
6761        // Could be used, but may break backward compatibility.
6762        // if (mSingleLine == singleLine) return;
6763        setInputTypeSingleLine(singleLine);
6764        applySingleLine(singleLine, true, true);
6765    }
6766
6767    /**
6768     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
6769     * @param singleLine
6770     */
6771    private void setInputTypeSingleLine(boolean singleLine) {
6772        if (mEditor != null &&
6773                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6774            if (singleLine) {
6775                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6776            } else {
6777                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6778            }
6779        }
6780    }
6781
6782    private void applySingleLine(boolean singleLine, boolean applyTransformation,
6783            boolean changeMaxLines) {
6784        mSingleLine = singleLine;
6785        if (singleLine) {
6786            setLines(1);
6787            setHorizontallyScrolling(true);
6788            if (applyTransformation) {
6789                setTransformationMethod(SingleLineTransformationMethod.getInstance());
6790            }
6791        } else {
6792            if (changeMaxLines) {
6793                setMaxLines(Integer.MAX_VALUE);
6794            }
6795            setHorizontallyScrolling(false);
6796            if (applyTransformation) {
6797                setTransformationMethod(null);
6798            }
6799        }
6800    }
6801
6802    /**
6803     * Causes words in the text that are longer than the view is wide
6804     * to be ellipsized instead of broken in the middle.  You may also
6805     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
6806     * to constrain the text to a single line.  Use <code>null</code>
6807     * to turn off ellipsizing.
6808     *
6809     * If {@link #setMaxLines} has been used to set two or more lines,
6810     * {@link android.text.TextUtils.TruncateAt#END} and
6811     * {@link android.text.TextUtils.TruncateAt#MARQUEE}* are only supported
6812     * (other ellipsizing types will not do anything).
6813     *
6814     * @attr ref android.R.styleable#TextView_ellipsize
6815     */
6816    public void setEllipsize(TextUtils.TruncateAt where) {
6817        // TruncateAt is an enum. != comparison is ok between these singleton objects.
6818        if (mEllipsize != where) {
6819            mEllipsize = where;
6820
6821            if (mLayout != null) {
6822                nullLayouts();
6823                requestLayout();
6824                invalidate();
6825            }
6826        }
6827    }
6828
6829    /**
6830     * Sets how many times to repeat the marquee animation. Only applied if the
6831     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
6832     *
6833     * @see #getMarqueeRepeatLimit()
6834     *
6835     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
6836     */
6837    public void setMarqueeRepeatLimit(int marqueeLimit) {
6838        mMarqueeRepeatLimit = marqueeLimit;
6839    }
6840
6841    /**
6842     * Gets the number of times the marquee animation is repeated. Only meaningful if the
6843     * TextView has marquee enabled.
6844     *
6845     * @return the number of times the marquee animation is repeated. -1 if the animation
6846     * repeats indefinitely
6847     *
6848     * @see #setMarqueeRepeatLimit(int)
6849     *
6850     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
6851     */
6852    public int getMarqueeRepeatLimit() {
6853        return mMarqueeRepeatLimit;
6854    }
6855
6856    /**
6857     * Returns where, if anywhere, words that are longer than the view
6858     * is wide should be ellipsized.
6859     */
6860    @ViewDebug.ExportedProperty
6861    public TextUtils.TruncateAt getEllipsize() {
6862        return mEllipsize;
6863    }
6864
6865    /**
6866     * Set the TextView so that when it takes focus, all the text is
6867     * selected.
6868     *
6869     * @attr ref android.R.styleable#TextView_selectAllOnFocus
6870     */
6871    @android.view.RemotableViewMethod
6872    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
6873        createEditorIfNeeded();
6874        mEditor.mSelectAllOnFocus = selectAllOnFocus;
6875
6876        if (selectAllOnFocus && !(mText instanceof Spannable)) {
6877            setText(mText, BufferType.SPANNABLE);
6878        }
6879    }
6880
6881    /**
6882     * Set whether the cursor is visible. The default is true. Note that this property only
6883     * makes sense for editable TextView.
6884     *
6885     * @see #isCursorVisible()
6886     *
6887     * @attr ref android.R.styleable#TextView_cursorVisible
6888     */
6889    @android.view.RemotableViewMethod
6890    public void setCursorVisible(boolean visible) {
6891        if (visible && mEditor == null) return; // visible is the default value with no edit data
6892        createEditorIfNeeded();
6893        if (mEditor.mCursorVisible != visible) {
6894            mEditor.mCursorVisible = visible;
6895            invalidate();
6896
6897            mEditor.makeBlink();
6898
6899            // InsertionPointCursorController depends on mCursorVisible
6900            mEditor.prepareCursorControllers();
6901        }
6902    }
6903
6904    /**
6905     * @return whether or not the cursor is visible (assuming this TextView is editable)
6906     *
6907     * @see #setCursorVisible(boolean)
6908     *
6909     * @attr ref android.R.styleable#TextView_cursorVisible
6910     */
6911    public boolean isCursorVisible() {
6912        // true is the default value
6913        return mEditor == null ? true : mEditor.mCursorVisible;
6914    }
6915
6916    private boolean canMarquee() {
6917        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
6918        return width > 0 && (mLayout.getLineWidth(0) > width ||
6919                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
6920                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
6921    }
6922
6923    private void startMarquee() {
6924        // Do not ellipsize EditText
6925        if (getKeyListener() != null) return;
6926
6927        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
6928            return;
6929        }
6930
6931        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
6932                getLineCount() == 1 && canMarquee()) {
6933
6934            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6935                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
6936                final Layout tmp = mLayout;
6937                mLayout = mSavedMarqueeModeLayout;
6938                mSavedMarqueeModeLayout = tmp;
6939                setHorizontalFadingEdgeEnabled(true);
6940                requestLayout();
6941                invalidate();
6942            }
6943
6944            if (mMarquee == null) mMarquee = new Marquee(this);
6945            mMarquee.start(mMarqueeRepeatLimit);
6946        }
6947    }
6948
6949    private void stopMarquee() {
6950        if (mMarquee != null && !mMarquee.isStopped()) {
6951            mMarquee.stop();
6952        }
6953
6954        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
6955            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
6956            final Layout tmp = mSavedMarqueeModeLayout;
6957            mSavedMarqueeModeLayout = mLayout;
6958            mLayout = tmp;
6959            setHorizontalFadingEdgeEnabled(false);
6960            requestLayout();
6961            invalidate();
6962        }
6963    }
6964
6965    private void startStopMarquee(boolean start) {
6966        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6967            if (start) {
6968                startMarquee();
6969            } else {
6970                stopMarquee();
6971            }
6972        }
6973    }
6974
6975    /**
6976     * This method is called when the text is changed, in case any subclasses
6977     * would like to know.
6978     *
6979     * Within <code>text</code>, the <code>lengthAfter</code> characters
6980     * beginning at <code>start</code> have just replaced old text that had
6981     * length <code>lengthBefore</code>. It is an error to attempt to make
6982     * changes to <code>text</code> from this callback.
6983     *
6984     * @param text The text the TextView is displaying
6985     * @param start The offset of the start of the range of the text that was
6986     * modified
6987     * @param lengthBefore The length of the former text that has been replaced
6988     * @param lengthAfter The length of the replacement modified text
6989     */
6990    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
6991        // intentionally empty, template pattern method can be overridden by subclasses
6992    }
6993
6994    /**
6995     * This method is called when the selection has changed, in case any
6996     * subclasses would like to know.
6997     *
6998     * @param selStart The new selection start location.
6999     * @param selEnd The new selection end location.
7000     */
7001    protected void onSelectionChanged(int selStart, int selEnd) {
7002        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
7003    }
7004
7005    /**
7006     * Adds a TextWatcher to the list of those whose methods are called
7007     * whenever this TextView's text changes.
7008     * <p>
7009     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
7010     * not called after {@link #setText} calls.  Now, doing {@link #setText}
7011     * if there are any text changed listeners forces the buffer type to
7012     * Editable if it would not otherwise be and does call this method.
7013     */
7014    public void addTextChangedListener(TextWatcher watcher) {
7015        if (mListeners == null) {
7016            mListeners = new ArrayList<TextWatcher>();
7017        }
7018
7019        mListeners.add(watcher);
7020    }
7021
7022    /**
7023     * Removes the specified TextWatcher from the list of those whose
7024     * methods are called
7025     * whenever this TextView's text changes.
7026     */
7027    public void removeTextChangedListener(TextWatcher watcher) {
7028        if (mListeners != null) {
7029            int i = mListeners.indexOf(watcher);
7030
7031            if (i >= 0) {
7032                mListeners.remove(i);
7033            }
7034        }
7035    }
7036
7037    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
7038        if (mListeners != null) {
7039            final ArrayList<TextWatcher> list = mListeners;
7040            final int count = list.size();
7041            for (int i = 0; i < count; i++) {
7042                list.get(i).beforeTextChanged(text, start, before, after);
7043            }
7044        }
7045
7046        // The spans that are inside or intersect the modified region no longer make sense
7047        removeIntersectingSpans(start, start + before, SpellCheckSpan.class);
7048        removeIntersectingSpans(start, start + before, SuggestionSpan.class);
7049    }
7050
7051    // Removes all spans that are inside or actually overlap the start..end range
7052    private <T> void removeIntersectingSpans(int start, int end, Class<T> type) {
7053        if (!(mText instanceof Editable)) return;
7054        Editable text = (Editable) mText;
7055
7056        T[] spans = text.getSpans(start, end, type);
7057        final int length = spans.length;
7058        for (int i = 0; i < length; i++) {
7059            final int s = text.getSpanStart(spans[i]);
7060            final int e = text.getSpanEnd(spans[i]);
7061            // Spans that are adjacent to the edited region will be handled in
7062            // updateSpellCheckSpans. Result depends on what will be added (space or text)
7063            if (e == start || s == end) break;
7064            text.removeSpan(spans[i]);
7065        }
7066    }
7067
7068    /**
7069     * Not private so it can be called from an inner class without going
7070     * through a thunk.
7071     */
7072    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
7073        if (mListeners != null) {
7074            final ArrayList<TextWatcher> list = mListeners;
7075            final int count = list.size();
7076            for (int i = 0; i < count; i++) {
7077                list.get(i).onTextChanged(text, start, before, after);
7078            }
7079        }
7080
7081        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
7082    }
7083
7084    /**
7085     * Not private so it can be called from an inner class without going
7086     * through a thunk.
7087     */
7088    void sendAfterTextChanged(Editable text) {
7089        if (mListeners != null) {
7090            final ArrayList<TextWatcher> list = mListeners;
7091            final int count = list.size();
7092            for (int i = 0; i < count; i++) {
7093                list.get(i).afterTextChanged(text);
7094            }
7095        }
7096    }
7097
7098    void updateAfterEdit() {
7099        invalidate();
7100        int curs = getSelectionStart();
7101
7102        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7103            registerForPreDraw();
7104        }
7105
7106        if (curs >= 0) {
7107            mHighlightPathBogus = true;
7108            if (mEditor != null) mEditor.makeBlink();
7109            bringPointIntoView(curs);
7110        }
7111
7112        checkForResize();
7113    }
7114
7115    /**
7116     * Not private so it can be called from an inner class without going
7117     * through a thunk.
7118     */
7119    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
7120        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7121        if (ims == null || ims.mBatchEditNesting == 0) {
7122            updateAfterEdit();
7123        }
7124        if (ims != null) {
7125            ims.mContentChanged = true;
7126            if (ims.mChangedStart < 0) {
7127                ims.mChangedStart = start;
7128                ims.mChangedEnd = start+before;
7129            } else {
7130                ims.mChangedStart = Math.min(ims.mChangedStart, start);
7131                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
7132            }
7133            ims.mChangedDelta += after-before;
7134        }
7135
7136        sendOnTextChanged(buffer, start, before, after);
7137        onTextChanged(buffer, start, before, after);
7138    }
7139
7140    /**
7141     * Not private so it can be called from an inner class without going
7142     * through a thunk.
7143     */
7144    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
7145        // XXX Make the start and end move together if this ends up
7146        // spending too much time invalidating.
7147
7148        boolean selChanged = false;
7149        int newSelStart=-1, newSelEnd=-1;
7150
7151        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7152
7153        if (what == Selection.SELECTION_END) {
7154            selChanged = true;
7155            newSelEnd = newStart;
7156
7157            if (oldStart >= 0 || newStart >= 0) {
7158                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
7159                registerForPreDraw();
7160                if (mEditor != null) mEditor.makeBlink();
7161            }
7162        }
7163
7164        if (what == Selection.SELECTION_START) {
7165            selChanged = true;
7166            newSelStart = newStart;
7167
7168            if (oldStart >= 0 || newStart >= 0) {
7169                int end = Selection.getSelectionEnd(buf);
7170                invalidateCursor(end, oldStart, newStart);
7171            }
7172        }
7173
7174        if (selChanged) {
7175            mHighlightPathBogus = true;
7176            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
7177
7178            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
7179                if (newSelStart < 0) {
7180                    newSelStart = Selection.getSelectionStart(buf);
7181                }
7182                if (newSelEnd < 0) {
7183                    newSelEnd = Selection.getSelectionEnd(buf);
7184                }
7185                onSelectionChanged(newSelStart, newSelEnd);
7186            }
7187        }
7188
7189        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
7190                what instanceof CharacterStyle) {
7191            if (ims == null || ims.mBatchEditNesting == 0) {
7192                invalidate();
7193                mHighlightPathBogus = true;
7194                checkForResize();
7195            } else {
7196                ims.mContentChanged = true;
7197            }
7198            if (mEditor != null) {
7199                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
7200                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
7201            }
7202        }
7203
7204        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
7205            mHighlightPathBogus = true;
7206            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
7207                ims.mSelectionModeChanged = true;
7208            }
7209
7210            if (Selection.getSelectionStart(buf) >= 0) {
7211                if (ims == null || ims.mBatchEditNesting == 0) {
7212                    invalidateCursor();
7213                } else {
7214                    ims.mCursorChanged = true;
7215                }
7216            }
7217        }
7218
7219        if (what instanceof ParcelableSpan) {
7220            // If this is a span that can be sent to a remote process,
7221            // the current extract editor would be interested in it.
7222            if (ims != null && ims.mExtractedTextRequest != null) {
7223                if (ims.mBatchEditNesting != 0) {
7224                    if (oldStart >= 0) {
7225                        if (ims.mChangedStart > oldStart) {
7226                            ims.mChangedStart = oldStart;
7227                        }
7228                        if (ims.mChangedStart > oldEnd) {
7229                            ims.mChangedStart = oldEnd;
7230                        }
7231                    }
7232                    if (newStart >= 0) {
7233                        if (ims.mChangedStart > newStart) {
7234                            ims.mChangedStart = newStart;
7235                        }
7236                        if (ims.mChangedStart > newEnd) {
7237                            ims.mChangedStart = newEnd;
7238                        }
7239                    }
7240                } else {
7241                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
7242                            + oldStart + "-" + oldEnd + ","
7243                            + newStart + "-" + newEnd + " " + what);
7244                    ims.mContentChanged = true;
7245                }
7246            }
7247        }
7248
7249        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
7250                what instanceof SpellCheckSpan) {
7251            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
7252        }
7253    }
7254
7255    /**
7256     * @hide
7257     */
7258    @Override
7259    public void dispatchFinishTemporaryDetach() {
7260        mDispatchTemporaryDetach = true;
7261        super.dispatchFinishTemporaryDetach();
7262        mDispatchTemporaryDetach = false;
7263    }
7264
7265    @Override
7266    public void onStartTemporaryDetach() {
7267        super.onStartTemporaryDetach();
7268        // Only track when onStartTemporaryDetach() is called directly,
7269        // usually because this instance is an editable field in a list
7270        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
7271
7272        // Tell the editor that we are temporarily detached. It can use this to preserve
7273        // selection state as needed.
7274        if (mEditor != null) mEditor.mTemporaryDetach = true;
7275    }
7276
7277    @Override
7278    public void onFinishTemporaryDetach() {
7279        super.onFinishTemporaryDetach();
7280        // Only track when onStartTemporaryDetach() is called directly,
7281        // usually because this instance is an editable field in a list
7282        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
7283        if (mEditor != null) mEditor.mTemporaryDetach = false;
7284    }
7285
7286    @Override
7287    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
7288        if (mTemporaryDetach) {
7289            // If we are temporarily in the detach state, then do nothing.
7290            super.onFocusChanged(focused, direction, previouslyFocusedRect);
7291            return;
7292        }
7293
7294        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
7295
7296        if (focused) {
7297            if (mText instanceof Spannable) {
7298                Spannable sp = (Spannable) mText;
7299                MetaKeyKeyListener.resetMetaState(sp);
7300            }
7301        }
7302
7303        startStopMarquee(focused);
7304
7305        if (mTransformation != null) {
7306            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
7307        }
7308
7309        super.onFocusChanged(focused, direction, previouslyFocusedRect);
7310    }
7311
7312    @Override
7313    public void onWindowFocusChanged(boolean hasWindowFocus) {
7314        super.onWindowFocusChanged(hasWindowFocus);
7315
7316        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
7317
7318        startStopMarquee(hasWindowFocus);
7319    }
7320
7321    @Override
7322    protected void onVisibilityChanged(View changedView, int visibility) {
7323        super.onVisibilityChanged(changedView, visibility);
7324        if (mEditor != null && visibility != VISIBLE) {
7325            mEditor.hideControllers();
7326        }
7327    }
7328
7329    /**
7330     * Use {@link BaseInputConnection#removeComposingSpans
7331     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
7332     * state from this text view.
7333     */
7334    public void clearComposingText() {
7335        if (mText instanceof Spannable) {
7336            BaseInputConnection.removeComposingSpans((Spannable)mText);
7337        }
7338    }
7339
7340    @Override
7341    public void setSelected(boolean selected) {
7342        boolean wasSelected = isSelected();
7343
7344        super.setSelected(selected);
7345
7346        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7347            if (selected) {
7348                startMarquee();
7349            } else {
7350                stopMarquee();
7351            }
7352        }
7353    }
7354
7355    @Override
7356    public boolean onTouchEvent(MotionEvent event) {
7357        final int action = event.getActionMasked();
7358
7359        if (mEditor != null) mEditor.onTouchEvent(event);
7360
7361        final boolean superResult = super.onTouchEvent(event);
7362
7363        /*
7364         * Don't handle the release after a long press, because it will
7365         * move the selection away from whatever the menu action was
7366         * trying to affect.
7367         */
7368        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
7369            mEditor.mDiscardNextActionUp = false;
7370            return superResult;
7371        }
7372
7373        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
7374                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
7375
7376         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
7377                && mText instanceof Spannable && mLayout != null) {
7378            boolean handled = false;
7379
7380            if (mMovement != null) {
7381                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
7382            }
7383
7384            final boolean textIsSelectable = isTextSelectable();
7385            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
7386                // The LinkMovementMethod which should handle taps on links has not been installed
7387                // on non editable text that support text selection.
7388                // We reproduce its behavior here to open links for these.
7389                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
7390                        getSelectionEnd(), ClickableSpan.class);
7391
7392                if (links.length > 0) {
7393                    links[0].onClick(this);
7394                    handled = true;
7395                }
7396            }
7397
7398            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
7399                // Show the IME, except when selecting in read-only text.
7400                final InputMethodManager imm = InputMethodManager.peekInstance();
7401                viewClicked(imm);
7402                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
7403                    handled |= imm != null && imm.showSoftInput(this, 0);
7404                }
7405
7406                // The above condition ensures that the mEditor is not null
7407                mEditor.onTouchUpEvent(event);
7408
7409                handled = true;
7410            }
7411
7412            if (handled) {
7413                return true;
7414            }
7415        }
7416
7417        return superResult;
7418    }
7419
7420    @Override
7421    public boolean onGenericMotionEvent(MotionEvent event) {
7422        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7423            try {
7424                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
7425                    return true;
7426                }
7427            } catch (AbstractMethodError ex) {
7428                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
7429                // Ignore its absence in case third party applications implemented the
7430                // interface directly.
7431            }
7432        }
7433        return super.onGenericMotionEvent(event);
7434    }
7435
7436    /**
7437     * @return True iff this TextView contains a text that can be edited, or if this is
7438     * a selectable TextView.
7439     */
7440    boolean isTextEditable() {
7441        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
7442    }
7443
7444    /**
7445     * Returns true, only while processing a touch gesture, if the initial
7446     * touch down event caused focus to move to the text view and as a result
7447     * its selection changed.  Only valid while processing the touch gesture
7448     * of interest, in an editable text view.
7449     */
7450    public boolean didTouchFocusSelect() {
7451        return mEditor != null && mEditor.mTouchFocusSelected;
7452    }
7453
7454    @Override
7455    public void cancelLongPress() {
7456        super.cancelLongPress();
7457        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
7458    }
7459
7460    @Override
7461    public boolean onTrackballEvent(MotionEvent event) {
7462        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7463            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
7464                return true;
7465            }
7466        }
7467
7468        return super.onTrackballEvent(event);
7469    }
7470
7471    public void setScroller(Scroller s) {
7472        mScroller = s;
7473    }
7474
7475    @Override
7476    protected float getLeftFadingEdgeStrength() {
7477        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7478                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7479            if (mMarquee != null && !mMarquee.isStopped()) {
7480                final Marquee marquee = mMarquee;
7481                if (marquee.shouldDrawLeftFade()) {
7482                    final float scroll = marquee.getScroll();
7483                    return scroll / getHorizontalFadingEdgeLength();
7484                } else {
7485                    return 0.0f;
7486                }
7487            } else if (getLineCount() == 1) {
7488                final int layoutDirection = getLayoutDirection();
7489                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7490                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7491                    case Gravity.LEFT:
7492                        return 0.0f;
7493                    case Gravity.RIGHT:
7494                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
7495                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
7496                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
7497                    case Gravity.CENTER_HORIZONTAL:
7498                        return 0.0f;
7499                }
7500            }
7501        }
7502        return super.getLeftFadingEdgeStrength();
7503    }
7504
7505    @Override
7506    protected float getRightFadingEdgeStrength() {
7507        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7508                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7509            if (mMarquee != null && !mMarquee.isStopped()) {
7510                final Marquee marquee = mMarquee;
7511                final float maxFadeScroll = marquee.getMaxFadeScroll();
7512                final float scroll = marquee.getScroll();
7513                return (maxFadeScroll - scroll) / getHorizontalFadingEdgeLength();
7514            } else if (getLineCount() == 1) {
7515                final int layoutDirection = getLayoutDirection();
7516                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7517                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7518                    case Gravity.LEFT:
7519                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
7520                                getCompoundPaddingRight();
7521                        final float lineWidth = mLayout.getLineWidth(0);
7522                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
7523                    case Gravity.RIGHT:
7524                        return 0.0f;
7525                    case Gravity.CENTER_HORIZONTAL:
7526                    case Gravity.FILL_HORIZONTAL:
7527                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
7528                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
7529                                getHorizontalFadingEdgeLength();
7530                }
7531            }
7532        }
7533        return super.getRightFadingEdgeStrength();
7534    }
7535
7536    @Override
7537    protected int computeHorizontalScrollRange() {
7538        if (mLayout != null) {
7539            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
7540                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
7541        }
7542
7543        return super.computeHorizontalScrollRange();
7544    }
7545
7546    @Override
7547    protected int computeVerticalScrollRange() {
7548        if (mLayout != null)
7549            return mLayout.getHeight();
7550
7551        return super.computeVerticalScrollRange();
7552    }
7553
7554    @Override
7555    protected int computeVerticalScrollExtent() {
7556        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
7557    }
7558
7559    @Override
7560    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
7561        super.findViewsWithText(outViews, searched, flags);
7562        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
7563                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
7564            String searchedLowerCase = searched.toString().toLowerCase();
7565            String textLowerCase = mText.toString().toLowerCase();
7566            if (textLowerCase.contains(searchedLowerCase)) {
7567                outViews.add(this);
7568            }
7569        }
7570    }
7571
7572    public enum BufferType {
7573        NORMAL, SPANNABLE, EDITABLE,
7574    }
7575
7576    /**
7577     * Returns the TextView_textColor attribute from the
7578     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
7579     * from the TextView_textAppearance attribute, if TextView_textColor
7580     * was not set directly.
7581     */
7582    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
7583        ColorStateList colors;
7584        colors = attrs.getColorStateList(com.android.internal.R.styleable.
7585                                         TextView_textColor);
7586
7587        if (colors == null) {
7588            int ap = attrs.getResourceId(com.android.internal.R.styleable.
7589                                         TextView_textAppearance, -1);
7590            if (ap != -1) {
7591                TypedArray appearance;
7592                appearance = context.obtainStyledAttributes(ap,
7593                                            com.android.internal.R.styleable.TextAppearance);
7594                colors = appearance.getColorStateList(com.android.internal.R.styleable.
7595                                                  TextAppearance_textColor);
7596                appearance.recycle();
7597            }
7598        }
7599
7600        return colors;
7601    }
7602
7603    /**
7604     * Returns the default color from the TextView_textColor attribute
7605     * from the AttributeSet, if set, or the default color from the
7606     * TextAppearance_textColor from the TextView_textAppearance attribute,
7607     * if TextView_textColor was not set directly.
7608     */
7609    public static int getTextColor(Context context,
7610                                   TypedArray attrs,
7611                                   int def) {
7612        ColorStateList colors = getTextColors(context, attrs);
7613
7614        if (colors == null) {
7615            return def;
7616        } else {
7617            return colors.getDefaultColor();
7618        }
7619    }
7620
7621    @Override
7622    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
7623        final int filteredMetaState = event.getMetaState() & ~KeyEvent.META_CTRL_MASK;
7624        if (KeyEvent.metaStateHasNoModifiers(filteredMetaState)) {
7625            switch (keyCode) {
7626            case KeyEvent.KEYCODE_A:
7627                if (canSelectText()) {
7628                    return onTextContextMenuItem(ID_SELECT_ALL);
7629                }
7630                break;
7631            case KeyEvent.KEYCODE_X:
7632                if (canCut()) {
7633                    return onTextContextMenuItem(ID_CUT);
7634                }
7635                break;
7636            case KeyEvent.KEYCODE_C:
7637                if (canCopy()) {
7638                    return onTextContextMenuItem(ID_COPY);
7639                }
7640                break;
7641            case KeyEvent.KEYCODE_V:
7642                if (canPaste()) {
7643                    return onTextContextMenuItem(ID_PASTE);
7644                }
7645                break;
7646            }
7647        }
7648        return super.onKeyShortcut(keyCode, event);
7649    }
7650
7651    /**
7652     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
7653     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
7654     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
7655     * sufficient.
7656     */
7657    private boolean canSelectText() {
7658        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
7659    }
7660
7661    /**
7662     * Test based on the <i>intrinsic</i> charateristics of the TextView.
7663     * The text must be spannable and the movement method must allow for arbitary selection.
7664     *
7665     * See also {@link #canSelectText()}.
7666     */
7667    boolean textCanBeSelected() {
7668        // prepareCursorController() relies on this method.
7669        // If you change this condition, make sure prepareCursorController is called anywhere
7670        // the value of this condition might be changed.
7671        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
7672        return isTextEditable() ||
7673                (isTextSelectable() && mText instanceof Spannable && isEnabled());
7674    }
7675
7676    /**
7677     * This is a temporary method. Future versions may support multi-locale text.
7678     *
7679     * @return The locale that should be used for a word iterator and a spell checker
7680     * in this TextView, based on the current spell checker settings,
7681     * the current IME's locale, or the system default locale.
7682     * @hide
7683     */
7684    public Locale getTextServicesLocale() {
7685        Locale locale = Locale.getDefault();
7686        final TextServicesManager textServicesManager = (TextServicesManager)
7687                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
7688        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
7689        if (subtype != null) {
7690            locale = SpellCheckerSubtype.constructLocaleFromString(subtype.getLocale());
7691        }
7692        return locale;
7693    }
7694
7695    void onLocaleChanged() {
7696        // Will be re-created on demand in getWordIterator with the proper new locale
7697        mEditor.mWordIterator = null;
7698    }
7699
7700    /**
7701     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
7702     * Made available to achieve a consistent behavior.
7703     * @hide
7704     */
7705    public WordIterator getWordIterator() {
7706        if (mEditor != null) {
7707            return mEditor.getWordIterator();
7708        } else {
7709            return null;
7710        }
7711    }
7712
7713    @Override
7714    public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
7715        super.onPopulateAccessibilityEvent(event);
7716
7717        final boolean isPassword = hasPasswordTransformationMethod();
7718        if (!isPassword || shouldSpeakPasswordsForAccessibility()) {
7719            final CharSequence text = getTextForAccessibility();
7720            if (!TextUtils.isEmpty(text)) {
7721                event.getText().add(text);
7722            }
7723        }
7724    }
7725
7726    /**
7727     * @return true if the user has explicitly allowed accessibility services
7728     * to speak passwords.
7729     */
7730    private boolean shouldSpeakPasswordsForAccessibility() {
7731        return (Settings.Secure.getInt(mContext.getContentResolver(),
7732                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0) == 1);
7733    }
7734
7735    @Override
7736    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
7737        super.onInitializeAccessibilityEvent(event);
7738
7739        event.setClassName(TextView.class.getName());
7740        final boolean isPassword = hasPasswordTransformationMethod();
7741        event.setPassword(isPassword);
7742
7743        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
7744            event.setFromIndex(Selection.getSelectionStart(mText));
7745            event.setToIndex(Selection.getSelectionEnd(mText));
7746            event.setItemCount(mText.length());
7747        }
7748    }
7749
7750    @Override
7751    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
7752        super.onInitializeAccessibilityNodeInfo(info);
7753
7754        info.setClassName(TextView.class.getName());
7755        final boolean isPassword = hasPasswordTransformationMethod();
7756        info.setPassword(isPassword);
7757
7758        if (!isPassword) {
7759            info.setText(getTextForAccessibility());
7760        }
7761
7762        if (TextUtils.isEmpty(getContentDescription()) && !TextUtils.isEmpty(mText)) {
7763            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
7764            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
7765            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
7766                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
7767                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
7768                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
7769                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
7770        }
7771    }
7772
7773    @Override
7774    public void sendAccessibilityEvent(int eventType) {
7775        // Do not send scroll events since first they are not interesting for
7776        // accessibility and second such events a generated too frequently.
7777        // For details see the implementation of bringTextIntoView().
7778        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
7779            return;
7780        }
7781        super.sendAccessibilityEvent(eventType);
7782    }
7783
7784    /**
7785     * Gets the text reported for accessibility purposes.
7786     *
7787     * @return The accessibility text.
7788     *
7789     * @hide
7790     */
7791    public CharSequence getTextForAccessibility() {
7792        CharSequence text = getText();
7793        if (TextUtils.isEmpty(text)) {
7794            text = getHint();
7795        }
7796        return text;
7797    }
7798
7799    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
7800            int fromIndex, int removedCount, int addedCount) {
7801        AccessibilityEvent event =
7802            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
7803        event.setFromIndex(fromIndex);
7804        event.setRemovedCount(removedCount);
7805        event.setAddedCount(addedCount);
7806        event.setBeforeText(beforeText);
7807        sendAccessibilityEventUnchecked(event);
7808    }
7809
7810    /**
7811     * Returns whether this text view is a current input method target.  The
7812     * default implementation just checks with {@link InputMethodManager}.
7813     */
7814    public boolean isInputMethodTarget() {
7815        InputMethodManager imm = InputMethodManager.peekInstance();
7816        return imm != null && imm.isActive(this);
7817    }
7818
7819    static final int ID_SELECT_ALL = android.R.id.selectAll;
7820    static final int ID_CUT = android.R.id.cut;
7821    static final int ID_COPY = android.R.id.copy;
7822    static final int ID_PASTE = android.R.id.paste;
7823
7824    /**
7825     * Called when a context menu option for the text view is selected.  Currently
7826     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
7827     * {@link android.R.id#copy} or {@link android.R.id#paste}.
7828     *
7829     * @return true if the context menu item action was performed.
7830     */
7831    public boolean onTextContextMenuItem(int id) {
7832        int min = 0;
7833        int max = mText.length();
7834
7835        if (isFocused()) {
7836            final int selStart = getSelectionStart();
7837            final int selEnd = getSelectionEnd();
7838
7839            min = Math.max(0, Math.min(selStart, selEnd));
7840            max = Math.max(0, Math.max(selStart, selEnd));
7841        }
7842
7843        switch (id) {
7844            case ID_SELECT_ALL:
7845                // This does not enter text selection mode. Text is highlighted, so that it can be
7846                // bulk edited, like selectAllOnFocus does. Returns true even if text is empty.
7847                selectAllText();
7848                return true;
7849
7850            case ID_PASTE:
7851                paste(min, max);
7852                return true;
7853
7854            case ID_CUT:
7855                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
7856                deleteText_internal(min, max);
7857                stopSelectionActionMode();
7858                return true;
7859
7860            case ID_COPY:
7861                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
7862                stopSelectionActionMode();
7863                return true;
7864        }
7865        return false;
7866    }
7867
7868    CharSequence getTransformedText(int start, int end) {
7869        return removeSuggestionSpans(mTransformed.subSequence(start, end));
7870    }
7871
7872    @Override
7873    public boolean performLongClick() {
7874        boolean handled = false;
7875
7876        if (super.performLongClick()) {
7877            handled = true;
7878        }
7879
7880        if (mEditor != null) {
7881            handled |= mEditor.performLongClick(handled);
7882        }
7883
7884        if (handled) {
7885            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
7886            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
7887        }
7888
7889        return handled;
7890    }
7891
7892    @Override
7893    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
7894        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
7895        if (mEditor != null) {
7896            mEditor.onScrollChanged();
7897        }
7898    }
7899
7900    /**
7901     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
7902     * by the IME or by the spell checker as the user types. This is done by adding
7903     * {@link SuggestionSpan}s to the text.
7904     *
7905     * When suggestions are enabled (default), this list of suggestions will be displayed when the
7906     * user asks for them on these parts of the text. This value depends on the inputType of this
7907     * TextView.
7908     *
7909     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
7910     *
7911     * In addition, the type variation must be one of
7912     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
7913     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
7914     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
7915     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
7916     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
7917     *
7918     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
7919     *
7920     * @return true if the suggestions popup window is enabled, based on the inputType.
7921     */
7922    public boolean isSuggestionsEnabled() {
7923        if (mEditor == null) return false;
7924        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
7925            return false;
7926        }
7927        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
7928
7929        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
7930        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
7931                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
7932                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
7933                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
7934                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
7935    }
7936
7937    /**
7938     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
7939     * selection is initiated in this View.
7940     *
7941     * The standard implementation populates the menu with a subset of Select All, Cut, Copy and
7942     * Paste actions, depending on what this View supports.
7943     *
7944     * A custom implementation can add new entries in the default menu in its
7945     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The
7946     * default actions can also be removed from the menu using {@link Menu#removeItem(int)} and
7947     * passing {@link android.R.id#selectAll}, {@link android.R.id#cut}, {@link android.R.id#copy}
7948     * or {@link android.R.id#paste} ids as parameters.
7949     *
7950     * Returning false from
7951     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will prevent
7952     * the action mode from being started.
7953     *
7954     * Action click events should be handled by the custom implementation of
7955     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
7956     *
7957     * Note that text selection mode is not started when a TextView receives focus and the
7958     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
7959     * that case, to allow for quick replacement.
7960     */
7961    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
7962        createEditorIfNeeded();
7963        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
7964    }
7965
7966    /**
7967     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
7968     *
7969     * @return The current custom selection callback.
7970     */
7971    public ActionMode.Callback getCustomSelectionActionModeCallback() {
7972        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
7973    }
7974
7975    /**
7976     * @hide
7977     */
7978    protected void stopSelectionActionMode() {
7979        mEditor.stopSelectionActionMode();
7980    }
7981
7982    boolean canCut() {
7983        if (hasPasswordTransformationMethod()) {
7984            return false;
7985        }
7986
7987        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
7988                mEditor.mKeyListener != null) {
7989            return true;
7990        }
7991
7992        return false;
7993    }
7994
7995    boolean canCopy() {
7996        if (hasPasswordTransformationMethod()) {
7997            return false;
7998        }
7999
8000        if (mText.length() > 0 && hasSelection()) {
8001            return true;
8002        }
8003
8004        return false;
8005    }
8006
8007    boolean canPaste() {
8008        return (mText instanceof Editable &&
8009                mEditor != null && mEditor.mKeyListener != null &&
8010                getSelectionStart() >= 0 &&
8011                getSelectionEnd() >= 0 &&
8012                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
8013                hasPrimaryClip());
8014    }
8015
8016    boolean selectAllText() {
8017        final int length = mText.length();
8018        Selection.setSelection((Spannable) mText, 0, length);
8019        return length > 0;
8020    }
8021
8022    /**
8023     * Prepare text so that there are not zero or two spaces at beginning and end of region defined
8024     * by [min, max] when replacing this region by paste.
8025     * Note that if there were two spaces (or more) at that position before, they are kept. We just
8026     * make sure we do not add an extra one from the paste content.
8027     */
8028    long prepareSpacesAroundPaste(int min, int max, CharSequence paste) {
8029        if (paste.length() > 0) {
8030            if (min > 0) {
8031                final char charBefore = mTransformed.charAt(min - 1);
8032                final char charAfter = paste.charAt(0);
8033
8034                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8035                    // Two spaces at beginning of paste: remove one
8036                    final int originalLength = mText.length();
8037                    deleteText_internal(min - 1, min);
8038                    // Due to filters, there is no guarantee that exactly one character was
8039                    // removed: count instead.
8040                    final int delta = mText.length() - originalLength;
8041                    min += delta;
8042                    max += delta;
8043                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8044                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8045                    // No space at beginning of paste: add one
8046                    final int originalLength = mText.length();
8047                    replaceText_internal(min, min, " ");
8048                    // Taking possible filters into account as above.
8049                    final int delta = mText.length() - originalLength;
8050                    min += delta;
8051                    max += delta;
8052                }
8053            }
8054
8055            if (max < mText.length()) {
8056                final char charBefore = paste.charAt(paste.length() - 1);
8057                final char charAfter = mTransformed.charAt(max);
8058
8059                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8060                    // Two spaces at end of paste: remove one
8061                    deleteText_internal(max, max + 1);
8062                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8063                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8064                    // No space at end of paste: add one
8065                    replaceText_internal(max, max, " ");
8066                }
8067            }
8068        }
8069
8070        return TextUtils.packRangeInLong(min, max);
8071    }
8072
8073    /**
8074     * Paste clipboard content between min and max positions.
8075     */
8076    private void paste(int min, int max) {
8077        ClipboardManager clipboard =
8078            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
8079        ClipData clip = clipboard.getPrimaryClip();
8080        if (clip != null) {
8081            boolean didFirst = false;
8082            for (int i=0; i<clip.getItemCount(); i++) {
8083                CharSequence paste = clip.getItemAt(i).coerceToStyledText(getContext());
8084                if (paste != null) {
8085                    if (!didFirst) {
8086                        long minMax = prepareSpacesAroundPaste(min, max, paste);
8087                        min = TextUtils.unpackRangeStartFromLong(minMax);
8088                        max = TextUtils.unpackRangeEndFromLong(minMax);
8089                        Selection.setSelection((Spannable) mText, max);
8090                        ((Editable) mText).replace(min, max, paste);
8091                        didFirst = true;
8092                    } else {
8093                        ((Editable) mText).insert(getSelectionEnd(), "\n");
8094                        ((Editable) mText).insert(getSelectionEnd(), paste);
8095                    }
8096                }
8097            }
8098            stopSelectionActionMode();
8099            LAST_CUT_OR_COPY_TIME = 0;
8100        }
8101    }
8102
8103    private void setPrimaryClip(ClipData clip) {
8104        ClipboardManager clipboard = (ClipboardManager) getContext().
8105                getSystemService(Context.CLIPBOARD_SERVICE);
8106        clipboard.setPrimaryClip(clip);
8107        LAST_CUT_OR_COPY_TIME = SystemClock.uptimeMillis();
8108    }
8109
8110    /**
8111     * Get the character offset closest to the specified absolute position. A typical use case is to
8112     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
8113     *
8114     * @param x The horizontal absolute position of a point on screen
8115     * @param y The vertical absolute position of a point on screen
8116     * @return the character offset for the character whose position is closest to the specified
8117     *  position. Returns -1 if there is no layout.
8118     */
8119    public int getOffsetForPosition(float x, float y) {
8120        if (getLayout() == null) return -1;
8121        final int line = getLineAtCoordinate(y);
8122        final int offset = getOffsetAtCoordinate(line, x);
8123        return offset;
8124    }
8125
8126    float convertToLocalHorizontalCoordinate(float x) {
8127        x -= getTotalPaddingLeft();
8128        // Clamp the position to inside of the view.
8129        x = Math.max(0.0f, x);
8130        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
8131        x += getScrollX();
8132        return x;
8133    }
8134
8135    int getLineAtCoordinate(float y) {
8136        y -= getTotalPaddingTop();
8137        // Clamp the position to inside of the view.
8138        y = Math.max(0.0f, y);
8139        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
8140        y += getScrollY();
8141        return getLayout().getLineForVertical((int) y);
8142    }
8143
8144    private int getOffsetAtCoordinate(int line, float x) {
8145        x = convertToLocalHorizontalCoordinate(x);
8146        return getLayout().getOffsetForHorizontal(line, x);
8147    }
8148
8149    @Override
8150    public boolean onDragEvent(DragEvent event) {
8151        switch (event.getAction()) {
8152            case DragEvent.ACTION_DRAG_STARTED:
8153                return mEditor != null && mEditor.hasInsertionController();
8154
8155            case DragEvent.ACTION_DRAG_ENTERED:
8156                TextView.this.requestFocus();
8157                return true;
8158
8159            case DragEvent.ACTION_DRAG_LOCATION:
8160                final int offset = getOffsetForPosition(event.getX(), event.getY());
8161                Selection.setSelection((Spannable)mText, offset);
8162                return true;
8163
8164            case DragEvent.ACTION_DROP:
8165                if (mEditor != null) mEditor.onDrop(event);
8166                return true;
8167
8168            case DragEvent.ACTION_DRAG_ENDED:
8169            case DragEvent.ACTION_DRAG_EXITED:
8170            default:
8171                return true;
8172        }
8173    }
8174
8175    boolean isInBatchEditMode() {
8176        if (mEditor == null) return false;
8177        final Editor.InputMethodState ims = mEditor.mInputMethodState;
8178        if (ims != null) {
8179            return ims.mBatchEditNesting > 0;
8180        }
8181        return mEditor.mInBatchEditControllers;
8182    }
8183
8184    TextDirectionHeuristic getTextDirectionHeuristic() {
8185        if (hasPasswordTransformationMethod()) {
8186            // TODO: take care of the content direction to show the password text and dots justified
8187            // to the left or to the right
8188            return TextDirectionHeuristics.LOCALE;
8189        }
8190
8191        // Always need to resolve layout direction first
8192        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
8193
8194        // Now, we can select the heuristic
8195        switch (getTextDirection()) {
8196            default:
8197            case TEXT_DIRECTION_FIRST_STRONG:
8198                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
8199                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
8200            case TEXT_DIRECTION_ANY_RTL:
8201                return TextDirectionHeuristics.ANYRTL_LTR;
8202            case TEXT_DIRECTION_LTR:
8203                return TextDirectionHeuristics.LTR;
8204            case TEXT_DIRECTION_RTL:
8205                return TextDirectionHeuristics.RTL;
8206            case TEXT_DIRECTION_LOCALE:
8207                return TextDirectionHeuristics.LOCALE;
8208        }
8209    }
8210
8211    /**
8212     * @hide
8213     */
8214    @Override
8215    public void onResolveDrawables(int layoutDirection) {
8216        // No need to resolve twice
8217        if (mResolvedDrawables) {
8218            return;
8219        }
8220        // No drawable to resolve
8221        if (mDrawables == null) {
8222            return;
8223        }
8224        // No relative drawable to resolve
8225        if (mDrawables.mDrawableStart == null && mDrawables.mDrawableEnd == null) {
8226            mResolvedDrawables = true;
8227            return;
8228        }
8229
8230        Drawables dr = mDrawables;
8231        switch(layoutDirection) {
8232            case LAYOUT_DIRECTION_RTL:
8233                if (dr.mDrawableStart != null) {
8234                    dr.mDrawableRight = dr.mDrawableStart;
8235
8236                    dr.mDrawableSizeRight = dr.mDrawableSizeStart;
8237                    dr.mDrawableHeightRight = dr.mDrawableHeightStart;
8238                }
8239                if (dr.mDrawableEnd != null) {
8240                    dr.mDrawableLeft = dr.mDrawableEnd;
8241
8242                    dr.mDrawableSizeLeft = dr.mDrawableSizeEnd;
8243                    dr.mDrawableHeightLeft = dr.mDrawableHeightEnd;
8244                }
8245                break;
8246
8247            case LAYOUT_DIRECTION_LTR:
8248            default:
8249                if (dr.mDrawableStart != null) {
8250                    dr.mDrawableLeft = dr.mDrawableStart;
8251
8252                    dr.mDrawableSizeLeft = dr.mDrawableSizeStart;
8253                    dr.mDrawableHeightLeft = dr.mDrawableHeightStart;
8254                }
8255                if (dr.mDrawableEnd != null) {
8256                    dr.mDrawableRight = dr.mDrawableEnd;
8257
8258                    dr.mDrawableSizeRight = dr.mDrawableSizeEnd;
8259                    dr.mDrawableHeightRight = dr.mDrawableHeightEnd;
8260                }
8261                break;
8262        }
8263        updateDrawablesLayoutDirection(dr, layoutDirection);
8264        mResolvedDrawables = true;
8265    }
8266
8267    private void updateDrawablesLayoutDirection(Drawables dr, int layoutDirection) {
8268        if (dr.mDrawableLeft != null) {
8269            dr.mDrawableLeft.setLayoutDirection(layoutDirection);
8270        }
8271        if (dr.mDrawableRight != null) {
8272            dr.mDrawableRight.setLayoutDirection(layoutDirection);
8273        }
8274        if (dr.mDrawableTop != null) {
8275            dr.mDrawableTop.setLayoutDirection(layoutDirection);
8276        }
8277        if (dr.mDrawableBottom != null) {
8278            dr.mDrawableBottom.setLayoutDirection(layoutDirection);
8279        }
8280    }
8281
8282    protected void resetResolvedDrawables() {
8283        mResolvedDrawables = false;
8284    }
8285
8286    /**
8287     * @hide
8288     */
8289    protected void viewClicked(InputMethodManager imm) {
8290        if (imm != null) {
8291            imm.viewClicked(this);
8292        }
8293    }
8294
8295    /**
8296     * Deletes the range of text [start, end[.
8297     * @hide
8298     */
8299    protected void deleteText_internal(int start, int end) {
8300        ((Editable) mText).delete(start, end);
8301    }
8302
8303    /**
8304     * Replaces the range of text [start, end[ by replacement text
8305     * @hide
8306     */
8307    protected void replaceText_internal(int start, int end, CharSequence text) {
8308        ((Editable) mText).replace(start, end, text);
8309    }
8310
8311    /**
8312     * Sets a span on the specified range of text
8313     * @hide
8314     */
8315    protected void setSpan_internal(Object span, int start, int end, int flags) {
8316        ((Editable) mText).setSpan(span, start, end, flags);
8317    }
8318
8319    /**
8320     * Moves the cursor to the specified offset position in text
8321     * @hide
8322     */
8323    protected void setCursorPosition_internal(int start, int end) {
8324        Selection.setSelection(((Editable) mText), start, end);
8325    }
8326
8327    /**
8328     * An Editor should be created as soon as any of the editable-specific fields (grouped
8329     * inside the Editor object) is assigned to a non-default value.
8330     * This method will create the Editor if needed.
8331     *
8332     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
8333     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
8334     * Editor for backward compatibility, as soon as one of these fields is assigned.
8335     *
8336     * Also note that for performance reasons, the mEditor is created when needed, but not
8337     * reset when no more edit-specific fields are needed.
8338     */
8339    private void createEditorIfNeeded() {
8340        if (mEditor == null) {
8341            mEditor = new Editor(this);
8342        }
8343    }
8344
8345    /**
8346     * @hide
8347     */
8348    @Override
8349    public CharSequence getIterableTextForAccessibility() {
8350        if (!TextUtils.isEmpty(mText)) {
8351            if (!(mText instanceof Spannable)) {
8352                setText(mText, BufferType.SPANNABLE);
8353            }
8354            return mText;
8355        }
8356        return super.getIterableTextForAccessibility();
8357    }
8358
8359    /**
8360     * @hide
8361     */
8362    @Override
8363    public TextSegmentIterator getIteratorForGranularity(int granularity) {
8364        switch (granularity) {
8365            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
8366                Spannable text = (Spannable) getIterableTextForAccessibility();
8367                if (!TextUtils.isEmpty(text) && getLayout() != null) {
8368                    AccessibilityIterators.LineTextSegmentIterator iterator =
8369                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
8370                    iterator.initialize(text, getLayout());
8371                    return iterator;
8372                }
8373            } break;
8374            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
8375                Spannable text = (Spannable) getIterableTextForAccessibility();
8376                if (!TextUtils.isEmpty(text) && getLayout() != null) {
8377                    AccessibilityIterators.PageTextSegmentIterator iterator =
8378                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
8379                    iterator.initialize(this);
8380                    return iterator;
8381                }
8382            } break;
8383        }
8384        return super.getIteratorForGranularity(granularity);
8385    }
8386
8387    /**
8388     * @hide
8389     */
8390    @Override
8391    public int getAccessibilityCursorPosition() {
8392        if (TextUtils.isEmpty(getContentDescription())) {
8393            final int selectionEnd = getSelectionEnd();
8394            if (selectionEnd >= 0) {
8395                return selectionEnd;
8396            }
8397        }
8398        return super.getAccessibilityCursorPosition();
8399    }
8400
8401    /**
8402     * @hide
8403     */
8404    @Override
8405    public void setAccessibilityCursorPosition(int index) {
8406        if (getAccessibilityCursorPosition() == index) {
8407            return;
8408        }
8409        if (TextUtils.isEmpty(getContentDescription())) {
8410            if (index >= 0 && index <= mText.length()) {
8411                Selection.setSelection((Spannable) mText, index);
8412            } else {
8413                Selection.removeSelection((Spannable) mText);
8414            }
8415        } else {
8416            super.setAccessibilityCursorPosition(index);
8417        }
8418    }
8419
8420    /**
8421     * User interface state that is stored by TextView for implementing
8422     * {@link View#onSaveInstanceState}.
8423     */
8424    public static class SavedState extends BaseSavedState {
8425        int selStart;
8426        int selEnd;
8427        CharSequence text;
8428        boolean frozenWithFocus;
8429        CharSequence error;
8430
8431        SavedState(Parcelable superState) {
8432            super(superState);
8433        }
8434
8435        @Override
8436        public void writeToParcel(Parcel out, int flags) {
8437            super.writeToParcel(out, flags);
8438            out.writeInt(selStart);
8439            out.writeInt(selEnd);
8440            out.writeInt(frozenWithFocus ? 1 : 0);
8441            TextUtils.writeToParcel(text, out, flags);
8442
8443            if (error == null) {
8444                out.writeInt(0);
8445            } else {
8446                out.writeInt(1);
8447                TextUtils.writeToParcel(error, out, flags);
8448            }
8449        }
8450
8451        @Override
8452        public String toString() {
8453            String str = "TextView.SavedState{"
8454                    + Integer.toHexString(System.identityHashCode(this))
8455                    + " start=" + selStart + " end=" + selEnd;
8456            if (text != null) {
8457                str += " text=" + text;
8458            }
8459            return str + "}";
8460        }
8461
8462        @SuppressWarnings("hiding")
8463        public static final Parcelable.Creator<SavedState> CREATOR
8464                = new Parcelable.Creator<SavedState>() {
8465            public SavedState createFromParcel(Parcel in) {
8466                return new SavedState(in);
8467            }
8468
8469            public SavedState[] newArray(int size) {
8470                return new SavedState[size];
8471            }
8472        };
8473
8474        private SavedState(Parcel in) {
8475            super(in);
8476            selStart = in.readInt();
8477            selEnd = in.readInt();
8478            frozenWithFocus = (in.readInt() != 0);
8479            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8480
8481            if (in.readInt() != 0) {
8482                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8483            }
8484        }
8485    }
8486
8487    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
8488        private char[] mChars;
8489        private int mStart, mLength;
8490
8491        public CharWrapper(char[] chars, int start, int len) {
8492            mChars = chars;
8493            mStart = start;
8494            mLength = len;
8495        }
8496
8497        /* package */ void set(char[] chars, int start, int len) {
8498            mChars = chars;
8499            mStart = start;
8500            mLength = len;
8501        }
8502
8503        public int length() {
8504            return mLength;
8505        }
8506
8507        public char charAt(int off) {
8508            return mChars[off + mStart];
8509        }
8510
8511        @Override
8512        public String toString() {
8513            return new String(mChars, mStart, mLength);
8514        }
8515
8516        public CharSequence subSequence(int start, int end) {
8517            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8518                throw new IndexOutOfBoundsException(start + ", " + end);
8519            }
8520
8521            return new String(mChars, start + mStart, end - start);
8522        }
8523
8524        public void getChars(int start, int end, char[] buf, int off) {
8525            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8526                throw new IndexOutOfBoundsException(start + ", " + end);
8527            }
8528
8529            System.arraycopy(mChars, start + mStart, buf, off, end - start);
8530        }
8531
8532        public void drawText(Canvas c, int start, int end,
8533                             float x, float y, Paint p) {
8534            c.drawText(mChars, start + mStart, end - start, x, y, p);
8535        }
8536
8537        public void drawTextRun(Canvas c, int start, int end,
8538                int contextStart, int contextEnd, float x, float y, int flags, Paint p) {
8539            int count = end - start;
8540            int contextCount = contextEnd - contextStart;
8541            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
8542                    contextCount, x, y, flags, p);
8543        }
8544
8545        public float measureText(int start, int end, Paint p) {
8546            return p.measureText(mChars, start + mStart, end - start);
8547        }
8548
8549        public int getTextWidths(int start, int end, float[] widths, Paint p) {
8550            return p.getTextWidths(mChars, start + mStart, end - start, widths);
8551        }
8552
8553        public float getTextRunAdvances(int start, int end, int contextStart,
8554                int contextEnd, int flags, float[] advances, int advancesIndex,
8555                Paint p) {
8556            int count = end - start;
8557            int contextCount = contextEnd - contextStart;
8558            return p.getTextRunAdvances(mChars, start + mStart, count,
8559                    contextStart + mStart, contextCount, flags, advances,
8560                    advancesIndex);
8561        }
8562
8563        public float getTextRunAdvances(int start, int end, int contextStart,
8564                int contextEnd, int flags, float[] advances, int advancesIndex,
8565                Paint p, int reserved) {
8566            int count = end - start;
8567            int contextCount = contextEnd - contextStart;
8568            return p.getTextRunAdvances(mChars, start + mStart, count,
8569                    contextStart + mStart, contextCount, flags, advances,
8570                    advancesIndex, reserved);
8571        }
8572
8573        public int getTextRunCursor(int contextStart, int contextEnd, int flags,
8574                int offset, int cursorOpt, Paint p) {
8575            int contextCount = contextEnd - contextStart;
8576            return p.getTextRunCursor(mChars, contextStart + mStart,
8577                    contextCount, flags, offset + mStart, cursorOpt);
8578        }
8579    }
8580
8581    private static final class Marquee extends Handler {
8582        // TODO: Add an option to configure this
8583        private static final float MARQUEE_DELTA_MAX = 0.07f;
8584        private static final int MARQUEE_DELAY = 1200;
8585        private static final int MARQUEE_RESTART_DELAY = 1200;
8586        private static final int MARQUEE_RESOLUTION = 1000 / 30;
8587        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
8588
8589        private static final byte MARQUEE_STOPPED = 0x0;
8590        private static final byte MARQUEE_STARTING = 0x1;
8591        private static final byte MARQUEE_RUNNING = 0x2;
8592
8593        private static final int MESSAGE_START = 0x1;
8594        private static final int MESSAGE_TICK = 0x2;
8595        private static final int MESSAGE_RESTART = 0x3;
8596
8597        private final WeakReference<TextView> mView;
8598
8599        private byte mStatus = MARQUEE_STOPPED;
8600        private final float mScrollUnit;
8601        private float mMaxScroll;
8602        private float mMaxFadeScroll;
8603        private float mGhostStart;
8604        private float mGhostOffset;
8605        private float mFadeStop;
8606        private int mRepeatLimit;
8607
8608        private float mScroll;
8609
8610        Marquee(TextView v) {
8611            final float density = v.getContext().getResources().getDisplayMetrics().density;
8612            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / MARQUEE_RESOLUTION;
8613            mView = new WeakReference<TextView>(v);
8614        }
8615
8616        @Override
8617        public void handleMessage(Message msg) {
8618            switch (msg.what) {
8619                case MESSAGE_START:
8620                    mStatus = MARQUEE_RUNNING;
8621                    tick();
8622                    break;
8623                case MESSAGE_TICK:
8624                    tick();
8625                    break;
8626                case MESSAGE_RESTART:
8627                    if (mStatus == MARQUEE_RUNNING) {
8628                        if (mRepeatLimit >= 0) {
8629                            mRepeatLimit--;
8630                        }
8631                        start(mRepeatLimit);
8632                    }
8633                    break;
8634            }
8635        }
8636
8637        void tick() {
8638            if (mStatus != MARQUEE_RUNNING) {
8639                return;
8640            }
8641
8642            removeMessages(MESSAGE_TICK);
8643
8644            final TextView textView = mView.get();
8645            if (textView != null && (textView.isFocused() || textView.isSelected())) {
8646                mScroll += mScrollUnit;
8647                if (mScroll > mMaxScroll) {
8648                    mScroll = mMaxScroll;
8649                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
8650                } else {
8651                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
8652                }
8653                textView.invalidate();
8654            }
8655        }
8656
8657        void stop() {
8658            mStatus = MARQUEE_STOPPED;
8659            removeMessages(MESSAGE_START);
8660            removeMessages(MESSAGE_RESTART);
8661            removeMessages(MESSAGE_TICK);
8662            resetScroll();
8663        }
8664
8665        private void resetScroll() {
8666            mScroll = 0.0f;
8667            final TextView textView = mView.get();
8668            if (textView != null) textView.invalidate();
8669        }
8670
8671        void start(int repeatLimit) {
8672            if (repeatLimit == 0) {
8673                stop();
8674                return;
8675            }
8676            mRepeatLimit = repeatLimit;
8677            final TextView textView = mView.get();
8678            if (textView != null && textView.mLayout != null) {
8679                mStatus = MARQUEE_STARTING;
8680                mScroll = 0.0f;
8681                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
8682                        textView.getCompoundPaddingRight();
8683                final float lineWidth = textView.mLayout.getLineWidth(0);
8684                final float gap = textWidth / 3.0f;
8685                mGhostStart = lineWidth - textWidth + gap;
8686                mMaxScroll = mGhostStart + textWidth;
8687                mGhostOffset = lineWidth + gap;
8688                mFadeStop = lineWidth + textWidth / 6.0f;
8689                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
8690
8691                textView.invalidate();
8692                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
8693            }
8694        }
8695
8696        float getGhostOffset() {
8697            return mGhostOffset;
8698        }
8699
8700        float getScroll() {
8701            return mScroll;
8702        }
8703
8704        float getMaxFadeScroll() {
8705            return mMaxFadeScroll;
8706        }
8707
8708        boolean shouldDrawLeftFade() {
8709            return mScroll <= mFadeStop;
8710        }
8711
8712        boolean shouldDrawGhost() {
8713            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
8714        }
8715
8716        boolean isRunning() {
8717            return mStatus == MARQUEE_RUNNING;
8718        }
8719
8720        boolean isStopped() {
8721            return mStatus == MARQUEE_STOPPED;
8722        }
8723    }
8724
8725    private class ChangeWatcher implements TextWatcher, SpanWatcher {
8726
8727        private CharSequence mBeforeText;
8728
8729        public void beforeTextChanged(CharSequence buffer, int start,
8730                                      int before, int after) {
8731            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
8732                    + " before=" + before + " after=" + after + ": " + buffer);
8733
8734            if (AccessibilityManager.getInstance(mContext).isEnabled()
8735                    && !isPasswordInputType(getInputType())
8736                    && !hasPasswordTransformationMethod()) {
8737                mBeforeText = buffer.toString();
8738            }
8739
8740            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
8741        }
8742
8743        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
8744            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
8745                    + " before=" + before + " after=" + after + ": " + buffer);
8746            TextView.this.handleTextChanged(buffer, start, before, after);
8747
8748            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
8749                    (isFocused() || isSelected() && isShown())) {
8750                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
8751                mBeforeText = null;
8752            }
8753        }
8754
8755        public void afterTextChanged(Editable buffer) {
8756            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
8757            TextView.this.sendAfterTextChanged(buffer);
8758
8759            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
8760                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
8761            }
8762        }
8763
8764        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
8765            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
8766                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
8767            TextView.this.spanChange(buf, what, s, st, e, en);
8768        }
8769
8770        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
8771            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
8772                    + " what=" + what + ": " + buf);
8773            TextView.this.spanChange(buf, what, -1, s, -1, e);
8774        }
8775
8776        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
8777            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
8778                    + " what=" + what + ": " + buf);
8779            TextView.this.spanChange(buf, what, s, -1, e, -1);
8780        }
8781    }
8782}
8783