TextView.java revision 4dc4f73cabcfe685761326b79e75455970b6bc5e 
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 com.android.internal.util.FastMath;
20import com.android.internal.widget.EditableInputConnection;
21
22import org.xmlpull.v1.XmlPullParserException;
23
24import android.content.Context;
25import android.content.Intent;
26import android.content.res.ColorStateList;
27import android.content.res.Resources;
28import android.content.res.TypedArray;
29import android.content.res.XmlResourceParser;
30import android.graphics.Canvas;
31import android.graphics.Paint;
32import android.graphics.Path;
33import android.graphics.Rect;
34import android.graphics.RectF;
35import android.graphics.Typeface;
36import android.graphics.drawable.Drawable;
37import android.os.Bundle;
38import android.os.Handler;
39import android.os.Message;
40import android.os.Parcel;
41import android.os.Parcelable;
42import android.os.ResultReceiver;
43import android.os.SystemClock;
44import android.text.BoringLayout;
45import android.text.ClipboardManager;
46import android.text.DynamicLayout;
47import android.text.Editable;
48import android.text.GetChars;
49import android.text.GraphicsOperations;
50import android.text.InputFilter;
51import android.text.InputType;
52import android.text.Layout;
53import android.text.ParcelableSpan;
54import android.text.Selection;
55import android.text.SpanWatcher;
56import android.text.Spannable;
57import android.text.SpannableString;
58import android.text.Spanned;
59import android.text.SpannedString;
60import android.text.StaticLayout;
61import android.text.TextPaint;
62import android.text.TextUtils;
63import android.text.TextWatcher;
64import android.text.method.DateKeyListener;
65import android.text.method.DateTimeKeyListener;
66import android.text.method.DialerKeyListener;
67import android.text.method.DigitsKeyListener;
68import android.text.method.KeyListener;
69import android.text.method.LinkMovementMethod;
70import android.text.method.MetaKeyKeyListener;
71import android.text.method.MovementMethod;
72import android.text.method.PasswordTransformationMethod;
73import android.text.method.SingleLineTransformationMethod;
74import android.text.method.TextKeyListener;
75import android.text.method.TimeKeyListener;
76import android.text.method.TransformationMethod;
77import android.text.style.ParagraphStyle;
78import android.text.style.URLSpan;
79import android.text.style.UpdateAppearance;
80import android.text.util.Linkify;
81import android.util.AttributeSet;
82import android.util.FloatMath;
83import android.util.Log;
84import android.util.TypedValue;
85import android.view.ContextMenu;
86import android.view.Gravity;
87import android.view.KeyEvent;
88import android.view.LayoutInflater;
89import android.view.MenuItem;
90import android.view.MotionEvent;
91import android.view.View;
92import android.view.ViewDebug;
93import android.view.ViewRoot;
94import android.view.ViewTreeObserver;
95import android.view.ViewGroup.LayoutParams;
96import android.view.accessibility.AccessibilityEvent;
97import android.view.accessibility.AccessibilityManager;
98import android.view.animation.AnimationUtils;
99import android.view.inputmethod.BaseInputConnection;
100import android.view.inputmethod.CompletionInfo;
101import android.view.inputmethod.EditorInfo;
102import android.view.inputmethod.ExtractedText;
103import android.view.inputmethod.ExtractedTextRequest;
104import android.view.inputmethod.InputConnection;
105import android.view.inputmethod.InputMethodManager;
106import android.widget.RemoteViews.RemoteView;
107
108import java.io.IOException;
109import java.lang.ref.WeakReference;
110import java.util.ArrayList;
111
112/**
113 * Displays text to the user and optionally allows them to edit it.  A TextView
114 * is a complete text editor, however the basic class is configured to not
115 * allow editing; see {@link EditText} for a subclass that configures the text
116 * view for editing.
117 *
118 * <p>
119 * <b>XML attributes</b>
120 * <p>
121 * See {@link android.R.styleable#TextView TextView Attributes},
122 * {@link android.R.styleable#View View Attributes}
123 *
124 * @attr ref android.R.styleable#TextView_text
125 * @attr ref android.R.styleable#TextView_bufferType
126 * @attr ref android.R.styleable#TextView_hint
127 * @attr ref android.R.styleable#TextView_textColor
128 * @attr ref android.R.styleable#TextView_textColorHighlight
129 * @attr ref android.R.styleable#TextView_textColorHint
130 * @attr ref android.R.styleable#TextView_textAppearance
131 * @attr ref android.R.styleable#TextView_textColorLink
132 * @attr ref android.R.styleable#TextView_textSize
133 * @attr ref android.R.styleable#TextView_textScaleX
134 * @attr ref android.R.styleable#TextView_typeface
135 * @attr ref android.R.styleable#TextView_textStyle
136 * @attr ref android.R.styleable#TextView_cursorVisible
137 * @attr ref android.R.styleable#TextView_maxLines
138 * @attr ref android.R.styleable#TextView_maxHeight
139 * @attr ref android.R.styleable#TextView_lines
140 * @attr ref android.R.styleable#TextView_height
141 * @attr ref android.R.styleable#TextView_minLines
142 * @attr ref android.R.styleable#TextView_minHeight
143 * @attr ref android.R.styleable#TextView_maxEms
144 * @attr ref android.R.styleable#TextView_maxWidth
145 * @attr ref android.R.styleable#TextView_ems
146 * @attr ref android.R.styleable#TextView_width
147 * @attr ref android.R.styleable#TextView_minEms
148 * @attr ref android.R.styleable#TextView_minWidth
149 * @attr ref android.R.styleable#TextView_gravity
150 * @attr ref android.R.styleable#TextView_scrollHorizontally
151 * @attr ref android.R.styleable#TextView_password
152 * @attr ref android.R.styleable#TextView_singleLine
153 * @attr ref android.R.styleable#TextView_selectAllOnFocus
154 * @attr ref android.R.styleable#TextView_includeFontPadding
155 * @attr ref android.R.styleable#TextView_maxLength
156 * @attr ref android.R.styleable#TextView_shadowColor
157 * @attr ref android.R.styleable#TextView_shadowDx
158 * @attr ref android.R.styleable#TextView_shadowDy
159 * @attr ref android.R.styleable#TextView_shadowRadius
160 * @attr ref android.R.styleable#TextView_autoLink
161 * @attr ref android.R.styleable#TextView_linksClickable
162 * @attr ref android.R.styleable#TextView_numeric
163 * @attr ref android.R.styleable#TextView_digits
164 * @attr ref android.R.styleable#TextView_phoneNumber
165 * @attr ref android.R.styleable#TextView_inputMethod
166 * @attr ref android.R.styleable#TextView_capitalize
167 * @attr ref android.R.styleable#TextView_autoText
168 * @attr ref android.R.styleable#TextView_editable
169 * @attr ref android.R.styleable#TextView_freezesText
170 * @attr ref android.R.styleable#TextView_ellipsize
171 * @attr ref android.R.styleable#TextView_drawableTop
172 * @attr ref android.R.styleable#TextView_drawableBottom
173 * @attr ref android.R.styleable#TextView_drawableRight
174 * @attr ref android.R.styleable#TextView_drawableLeft
175 * @attr ref android.R.styleable#TextView_drawablePadding
176 * @attr ref android.R.styleable#TextView_lineSpacingExtra
177 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
178 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
179 * @attr ref android.R.styleable#TextView_inputType
180 * @attr ref android.R.styleable#TextView_imeOptions
181 * @attr ref android.R.styleable#TextView_privateImeOptions
182 * @attr ref android.R.styleable#TextView_imeActionLabel
183 * @attr ref android.R.styleable#TextView_imeActionId
184 * @attr ref android.R.styleable#TextView_editorExtras
185 */
186@RemoteView
187public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
188    static final String TAG = "TextView";
189    static final boolean DEBUG_EXTRACT = false;
190
191    private static int PRIORITY = 100;
192
193    private ColorStateList mTextColor;
194    private int mCurTextColor;
195    private ColorStateList mHintTextColor;
196    private ColorStateList mLinkTextColor;
197    private int mCurHintTextColor;
198    private boolean mFreezesText;
199    private boolean mFrozenWithFocus;
200    private boolean mTemporaryDetach;
201
202    private boolean mEatTouchRelease = false;
203    private boolean mScrolled = false;
204
205    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
206    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
207
208    private float mShadowRadius, mShadowDx, mShadowDy;
209
210    private static final int PREDRAW_NOT_REGISTERED = 0;
211    private static final int PREDRAW_PENDING = 1;
212    private static final int PREDRAW_DONE = 2;
213    private int mPreDrawState = PREDRAW_NOT_REGISTERED;
214
215    private TextUtils.TruncateAt mEllipsize = null;
216
217    // Enum for the "typeface" XML parameter.
218    // TODO: How can we get this from the XML instead of hardcoding it here?
219    private static final int SANS = 1;
220    private static final int SERIF = 2;
221    private static final int MONOSPACE = 3;
222
223    // Bitfield for the "numeric" XML parameter.
224    // TODO: How can we get this from the XML instead of hardcoding it here?
225    private static final int SIGNED = 2;
226    private static final int DECIMAL = 4;
227
228    class Drawables {
229        final Rect mCompoundRect = new Rect();
230        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight;
231        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight;
232        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight;
233        int mDrawablePadding;
234    }
235    private Drawables mDrawables;
236
237    private CharSequence mError;
238    private boolean mErrorWasChanged;
239    private ErrorPopup mPopup;
240    /**
241     * This flag is set if the TextView tries to display an error before it
242     * is attached to the window (so its position is still unknown).
243     * It causes the error to be shown later, when onAttachedToWindow()
244     * is called.
245     */
246    private boolean mShowErrorAfterAttach;
247
248    private CharWrapper mCharWrapper = null;
249
250    private boolean mSelectionMoved = false;
251    private boolean mTouchFocusSelected = false;
252
253    private Marquee mMarquee;
254    private boolean mRestartMarquee;
255
256    private int mMarqueeRepeatLimit = 3;
257
258    class InputContentType {
259        int imeOptions = EditorInfo.IME_NULL;
260        String privateImeOptions;
261        CharSequence imeActionLabel;
262        int imeActionId;
263        Bundle extras;
264        OnEditorActionListener onEditorActionListener;
265        boolean enterDown;
266    }
267    InputContentType mInputContentType;
268
269    class InputMethodState {
270        Rect mCursorRectInWindow = new Rect();
271        RectF mTmpRectF = new RectF();
272        float[] mTmpOffset = new float[2];
273        ExtractedTextRequest mExtracting;
274        final ExtractedText mTmpExtracted = new ExtractedText();
275        int mBatchEditNesting;
276        boolean mCursorChanged;
277        boolean mSelectionModeChanged;
278        boolean mContentChanged;
279        int mChangedStart, mChangedEnd, mChangedDelta;
280    }
281    InputMethodState mInputMethodState;
282
283    /*
284     * Kick-start the font cache for the zygote process (to pay the cost of
285     * initializing freetype for our default font only once).
286     */
287    static {
288        Paint p = new Paint();
289        p.setAntiAlias(true);
290        // We don't care about the result, just the side-effect of measuring.
291        p.measureText("H");
292    }
293
294    /**
295     * Interface definition for a callback to be invoked when an action is
296     * performed on the editor.
297     */
298    public interface OnEditorActionListener {
299        /**
300         * Called when an action is being performed.
301         *
302         * @param v The view that was clicked.
303         * @param actionId Identifier of the action.  This will be either the
304         * identifier you supplied, or {@link EditorInfo#IME_NULL
305         * EditorInfo.IME_NULL} if being called due to the enter key
306         * being pressed.
307         * @param event If triggered by an enter key, this is the event;
308         * otherwise, this is null.
309         * @return Return true if you have consumed the action, else false.
310         */
311        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
312    }
313
314    public TextView(Context context) {
315        this(context, null);
316    }
317
318    public TextView(Context context,
319                    AttributeSet attrs) {
320        this(context, attrs, com.android.internal.R.attr.textViewStyle);
321    }
322
323    public TextView(Context context,
324                    AttributeSet attrs,
325                    int defStyle) {
326        super(context, attrs, defStyle);
327        mText = "";
328
329        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
330        // If we get the paint from the skin, we should set it to left, since
331        // the layout always wants it to be left.
332        // mTextPaint.setTextAlign(Paint.Align.LEFT);
333
334        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
335
336        mMovement = getDefaultMovementMethod();
337        mTransformation = null;
338
339        TypedArray a =
340            context.obtainStyledAttributes(
341                attrs, com.android.internal.R.styleable.TextView, defStyle, 0);
342
343        int textColorHighlight = 0;
344        ColorStateList textColor = null;
345        ColorStateList textColorHint = null;
346        ColorStateList textColorLink = null;
347        int textSize = 15;
348        int typefaceIndex = -1;
349        int styleIndex = -1;
350
351        /*
352         * Look the appearance up without checking first if it exists because
353         * almost every TextView has one and it greatly simplifies the logic
354         * to be able to parse the appearance first and then let specific tags
355         * for this View override it.
356         */
357        TypedArray appearance = null;
358        int ap = a.getResourceId(com.android.internal.R.styleable.TextView_textAppearance, -1);
359        if (ap != -1) {
360            appearance = context.obtainStyledAttributes(ap,
361                                com.android.internal.R.styleable.
362                                TextAppearance);
363        }
364        if (appearance != null) {
365            int n = appearance.getIndexCount();
366            for (int i = 0; i < n; i++) {
367                int attr = appearance.getIndex(i);
368
369                switch (attr) {
370                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
371                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
372                    break;
373
374                case com.android.internal.R.styleable.TextAppearance_textColor:
375                    textColor = appearance.getColorStateList(attr);
376                    break;
377
378                case com.android.internal.R.styleable.TextAppearance_textColorHint:
379                    textColorHint = appearance.getColorStateList(attr);
380                    break;
381
382                case com.android.internal.R.styleable.TextAppearance_textColorLink:
383                    textColorLink = appearance.getColorStateList(attr);
384                    break;
385
386                case com.android.internal.R.styleable.TextAppearance_textSize:
387                    textSize = appearance.getDimensionPixelSize(attr, textSize);
388                    break;
389
390                case com.android.internal.R.styleable.TextAppearance_typeface:
391                    typefaceIndex = appearance.getInt(attr, -1);
392                    break;
393
394                case com.android.internal.R.styleable.TextAppearance_textStyle:
395                    styleIndex = appearance.getInt(attr, -1);
396                    break;
397                }
398            }
399
400            appearance.recycle();
401        }
402
403        boolean editable = getDefaultEditable();
404        CharSequence inputMethod = null;
405        int numeric = 0;
406        CharSequence digits = null;
407        boolean phone = false;
408        boolean autotext = false;
409        int autocap = -1;
410        int buffertype = 0;
411        boolean selectallonfocus = false;
412        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
413            drawableBottom = null;
414        int drawablePadding = 0;
415        int ellipsize = -1;
416        boolean singleLine = false;
417        int maxlength = -1;
418        CharSequence text = "";
419        CharSequence hint = null;
420        int shadowcolor = 0;
421        float dx = 0, dy = 0, r = 0;
422        boolean password = false;
423        int inputType = EditorInfo.TYPE_NULL;
424
425        int n = a.getIndexCount();
426        for (int i = 0; i < n; i++) {
427            int attr = a.getIndex(i);
428
429            switch (attr) {
430            case com.android.internal.R.styleable.TextView_editable:
431                editable = a.getBoolean(attr, editable);
432                break;
433
434            case com.android.internal.R.styleable.TextView_inputMethod:
435                inputMethod = a.getText(attr);
436                break;
437
438            case com.android.internal.R.styleable.TextView_numeric:
439                numeric = a.getInt(attr, numeric);
440                break;
441
442            case com.android.internal.R.styleable.TextView_digits:
443                digits = a.getText(attr);
444                break;
445
446            case com.android.internal.R.styleable.TextView_phoneNumber:
447                phone = a.getBoolean(attr, phone);
448                break;
449
450            case com.android.internal.R.styleable.TextView_autoText:
451                autotext = a.getBoolean(attr, autotext);
452                break;
453
454            case com.android.internal.R.styleable.TextView_capitalize:
455                autocap = a.getInt(attr, autocap);
456                break;
457
458            case com.android.internal.R.styleable.TextView_bufferType:
459                buffertype = a.getInt(attr, buffertype);
460                break;
461
462            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
463                selectallonfocus = a.getBoolean(attr, selectallonfocus);
464                break;
465
466            case com.android.internal.R.styleable.TextView_autoLink:
467                mAutoLinkMask = a.getInt(attr, 0);
468                break;
469
470            case com.android.internal.R.styleable.TextView_linksClickable:
471                mLinksClickable = a.getBoolean(attr, true);
472                break;
473
474            case com.android.internal.R.styleable.TextView_drawableLeft:
475                drawableLeft = a.getDrawable(attr);
476                break;
477
478            case com.android.internal.R.styleable.TextView_drawableTop:
479                drawableTop = a.getDrawable(attr);
480                break;
481
482            case com.android.internal.R.styleable.TextView_drawableRight:
483                drawableRight = a.getDrawable(attr);
484                break;
485
486            case com.android.internal.R.styleable.TextView_drawableBottom:
487                drawableBottom = a.getDrawable(attr);
488                break;
489
490            case com.android.internal.R.styleable.TextView_drawablePadding:
491                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
492                break;
493
494            case com.android.internal.R.styleable.TextView_maxLines:
495                setMaxLines(a.getInt(attr, -1));
496                break;
497
498            case com.android.internal.R.styleable.TextView_maxHeight:
499                setMaxHeight(a.getDimensionPixelSize(attr, -1));
500                break;
501
502            case com.android.internal.R.styleable.TextView_lines:
503                setLines(a.getInt(attr, -1));
504                break;
505
506            case com.android.internal.R.styleable.TextView_height:
507                setHeight(a.getDimensionPixelSize(attr, -1));
508                break;
509
510            case com.android.internal.R.styleable.TextView_minLines:
511                setMinLines(a.getInt(attr, -1));
512                break;
513
514            case com.android.internal.R.styleable.TextView_minHeight:
515                setMinHeight(a.getDimensionPixelSize(attr, -1));
516                break;
517
518            case com.android.internal.R.styleable.TextView_maxEms:
519                setMaxEms(a.getInt(attr, -1));
520                break;
521
522            case com.android.internal.R.styleable.TextView_maxWidth:
523                setMaxWidth(a.getDimensionPixelSize(attr, -1));
524                break;
525
526            case com.android.internal.R.styleable.TextView_ems:
527                setEms(a.getInt(attr, -1));
528                break;
529
530            case com.android.internal.R.styleable.TextView_width:
531                setWidth(a.getDimensionPixelSize(attr, -1));
532                break;
533
534            case com.android.internal.R.styleable.TextView_minEms:
535                setMinEms(a.getInt(attr, -1));
536                break;
537
538            case com.android.internal.R.styleable.TextView_minWidth:
539                setMinWidth(a.getDimensionPixelSize(attr, -1));
540                break;
541
542            case com.android.internal.R.styleable.TextView_gravity:
543                setGravity(a.getInt(attr, -1));
544                break;
545
546            case com.android.internal.R.styleable.TextView_hint:
547                hint = a.getText(attr);
548                break;
549
550            case com.android.internal.R.styleable.TextView_text:
551                text = a.getText(attr);
552                break;
553
554            case com.android.internal.R.styleable.TextView_scrollHorizontally:
555                if (a.getBoolean(attr, false)) {
556                    setHorizontallyScrolling(true);
557                }
558                break;
559
560            case com.android.internal.R.styleable.TextView_singleLine:
561                singleLine = a.getBoolean(attr, singleLine);
562                break;
563
564            case com.android.internal.R.styleable.TextView_ellipsize:
565                ellipsize = a.getInt(attr, ellipsize);
566                break;
567
568            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
569                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
570                break;
571
572            case com.android.internal.R.styleable.TextView_includeFontPadding:
573                if (!a.getBoolean(attr, true)) {
574                    setIncludeFontPadding(false);
575                }
576                break;
577
578            case com.android.internal.R.styleable.TextView_cursorVisible:
579                if (!a.getBoolean(attr, true)) {
580                    setCursorVisible(false);
581                }
582                break;
583
584            case com.android.internal.R.styleable.TextView_maxLength:
585                maxlength = a.getInt(attr, -1);
586                break;
587
588            case com.android.internal.R.styleable.TextView_textScaleX:
589                setTextScaleX(a.getFloat(attr, 1.0f));
590                break;
591
592            case com.android.internal.R.styleable.TextView_freezesText:
593                mFreezesText = a.getBoolean(attr, false);
594                break;
595
596            case com.android.internal.R.styleable.TextView_shadowColor:
597                shadowcolor = a.getInt(attr, 0);
598                break;
599
600            case com.android.internal.R.styleable.TextView_shadowDx:
601                dx = a.getFloat(attr, 0);
602                break;
603
604            case com.android.internal.R.styleable.TextView_shadowDy:
605                dy = a.getFloat(attr, 0);
606                break;
607
608            case com.android.internal.R.styleable.TextView_shadowRadius:
609                r = a.getFloat(attr, 0);
610                break;
611
612            case com.android.internal.R.styleable.TextView_enabled:
613                setEnabled(a.getBoolean(attr, isEnabled()));
614                break;
615
616            case com.android.internal.R.styleable.TextView_textColorHighlight:
617                textColorHighlight = a.getColor(attr, textColorHighlight);
618                break;
619
620            case com.android.internal.R.styleable.TextView_textColor:
621                textColor = a.getColorStateList(attr);
622                break;
623
624            case com.android.internal.R.styleable.TextView_textColorHint:
625                textColorHint = a.getColorStateList(attr);
626                break;
627
628            case com.android.internal.R.styleable.TextView_textColorLink:
629                textColorLink = a.getColorStateList(attr);
630                break;
631
632            case com.android.internal.R.styleable.TextView_textSize:
633                textSize = a.getDimensionPixelSize(attr, textSize);
634                break;
635
636            case com.android.internal.R.styleable.TextView_typeface:
637                typefaceIndex = a.getInt(attr, typefaceIndex);
638                break;
639
640            case com.android.internal.R.styleable.TextView_textStyle:
641                styleIndex = a.getInt(attr, styleIndex);
642                break;
643
644            case com.android.internal.R.styleable.TextView_password:
645                password = a.getBoolean(attr, password);
646                break;
647
648            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
649                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
650                break;
651
652            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
653                mSpacingMult = a.getFloat(attr, mSpacingMult);
654                break;
655
656            case com.android.internal.R.styleable.TextView_inputType:
657                inputType = a.getInt(attr, mInputType);
658                break;
659
660            case com.android.internal.R.styleable.TextView_imeOptions:
661                if (mInputContentType == null) {
662                    mInputContentType = new InputContentType();
663                }
664                mInputContentType.imeOptions = a.getInt(attr,
665                        mInputContentType.imeOptions);
666                break;
667
668            case com.android.internal.R.styleable.TextView_imeActionLabel:
669                if (mInputContentType == null) {
670                    mInputContentType = new InputContentType();
671                }
672                mInputContentType.imeActionLabel = a.getText(attr);
673                break;
674
675            case com.android.internal.R.styleable.TextView_imeActionId:
676                if (mInputContentType == null) {
677                    mInputContentType = new InputContentType();
678                }
679                mInputContentType.imeActionId = a.getInt(attr,
680                        mInputContentType.imeActionId);
681                break;
682
683            case com.android.internal.R.styleable.TextView_privateImeOptions:
684                setPrivateImeOptions(a.getString(attr));
685                break;
686
687            case com.android.internal.R.styleable.TextView_editorExtras:
688                try {
689                    setInputExtras(a.getResourceId(attr, 0));
690                } catch (XmlPullParserException e) {
691                    Log.w("TextView", "Failure reading input extras", e);
692                } catch (IOException e) {
693                    Log.w("TextView", "Failure reading input extras", e);
694                }
695                break;
696            }
697        }
698        a.recycle();
699
700        BufferType bufferType = BufferType.EDITABLE;
701
702        if ((inputType&(EditorInfo.TYPE_MASK_CLASS
703                |EditorInfo.TYPE_MASK_VARIATION))
704                == (EditorInfo.TYPE_CLASS_TEXT
705                        |EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
706            password = true;
707        }
708
709        if (inputMethod != null) {
710            Class c;
711
712            try {
713                c = Class.forName(inputMethod.toString());
714            } catch (ClassNotFoundException ex) {
715                throw new RuntimeException(ex);
716            }
717
718            try {
719                mInput = (KeyListener) c.newInstance();
720            } catch (InstantiationException ex) {
721                throw new RuntimeException(ex);
722            } catch (IllegalAccessException ex) {
723                throw new RuntimeException(ex);
724            }
725            try {
726                mInputType = inputType != EditorInfo.TYPE_NULL
727                        ? inputType
728                        : mInput.getInputType();
729            } catch (IncompatibleClassChangeError e) {
730                mInputType = EditorInfo.TYPE_CLASS_TEXT;
731            }
732        } else if (digits != null) {
733            mInput = DigitsKeyListener.getInstance(digits.toString());
734            mInputType = inputType;
735        } else if (inputType != EditorInfo.TYPE_NULL) {
736            setInputType(inputType, true);
737            singleLine = (inputType&(EditorInfo.TYPE_MASK_CLASS
738                            | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) !=
739                    (EditorInfo.TYPE_CLASS_TEXT
740                            | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
741        } else if (phone) {
742            mInput = DialerKeyListener.getInstance();
743            mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
744        } else if (numeric != 0) {
745            mInput = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
746                                                   (numeric & DECIMAL) != 0);
747            inputType = EditorInfo.TYPE_CLASS_NUMBER;
748            if ((numeric & SIGNED) != 0) {
749                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
750            }
751            if ((numeric & DECIMAL) != 0) {
752                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
753            }
754            mInputType = inputType;
755        } else if (autotext || autocap != -1) {
756            TextKeyListener.Capitalize cap;
757
758            inputType = EditorInfo.TYPE_CLASS_TEXT;
759            if (!singleLine) {
760                inputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
761            }
762
763            switch (autocap) {
764            case 1:
765                cap = TextKeyListener.Capitalize.SENTENCES;
766                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
767                break;
768
769            case 2:
770                cap = TextKeyListener.Capitalize.WORDS;
771                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
772                break;
773
774            case 3:
775                cap = TextKeyListener.Capitalize.CHARACTERS;
776                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
777                break;
778
779            default:
780                cap = TextKeyListener.Capitalize.NONE;
781                break;
782            }
783
784            mInput = TextKeyListener.getInstance(autotext, cap);
785            mInputType = inputType;
786        } else if (editable) {
787            mInput = TextKeyListener.getInstance();
788            mInputType = EditorInfo.TYPE_CLASS_TEXT;
789        } else {
790            mInput = null;
791
792            switch (buffertype) {
793                case 0:
794                    bufferType = BufferType.NORMAL;
795                    break;
796                case 1:
797                    bufferType = BufferType.SPANNABLE;
798                    break;
799                case 2:
800                    bufferType = BufferType.EDITABLE;
801                    break;
802            }
803        }
804
805        if (password && (mInputType&EditorInfo.TYPE_MASK_CLASS)
806                == EditorInfo.TYPE_CLASS_TEXT) {
807            mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
808                | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD;
809        }
810
811        if (selectallonfocus) {
812            mSelectAllOnFocus = true;
813
814            if (bufferType == BufferType.NORMAL)
815                bufferType = BufferType.SPANNABLE;
816        }
817
818        setCompoundDrawablesWithIntrinsicBounds(
819            drawableLeft, drawableTop, drawableRight, drawableBottom);
820        setCompoundDrawablePadding(drawablePadding);
821
822        if (singleLine) {
823            setSingleLine();
824
825            if (mInput == null && ellipsize < 0) {
826                ellipsize = 3; // END
827            }
828        }
829
830        switch (ellipsize) {
831            case 1:
832                setEllipsize(TextUtils.TruncateAt.START);
833                break;
834            case 2:
835                setEllipsize(TextUtils.TruncateAt.MIDDLE);
836                break;
837            case 3:
838                setEllipsize(TextUtils.TruncateAt.END);
839                break;
840            case 4:
841                setHorizontalFadingEdgeEnabled(true);
842                setEllipsize(TextUtils.TruncateAt.MARQUEE);
843                break;
844        }
845
846        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
847        setHintTextColor(textColorHint);
848        setLinkTextColor(textColorLink);
849        if (textColorHighlight != 0) {
850            setHighlightColor(textColorHighlight);
851        }
852        setRawTextSize(textSize);
853
854        if (password) {
855            setTransformationMethod(PasswordTransformationMethod.getInstance());
856            typefaceIndex = MONOSPACE;
857        } else if ((mInputType&(EditorInfo.TYPE_MASK_CLASS
858                |EditorInfo.TYPE_MASK_VARIATION))
859                == (EditorInfo.TYPE_CLASS_TEXT
860                        |EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
861            typefaceIndex = MONOSPACE;
862        }
863
864        setTypefaceByIndex(typefaceIndex, styleIndex);
865
866        if (shadowcolor != 0) {
867            setShadowLayer(r, dx, dy, shadowcolor);
868        }
869
870        if (maxlength >= 0) {
871            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
872        } else {
873            setFilters(NO_FILTERS);
874        }
875
876        setText(text, bufferType);
877        if (hint != null) setHint(hint);
878
879        /*
880         * Views are not normally focusable unless specified to be.
881         * However, TextViews that have input or movement methods *are*
882         * focusable by default.
883         */
884        a = context.obtainStyledAttributes(attrs,
885                                           com.android.internal.R.styleable.View,
886                                           defStyle, 0);
887
888        boolean focusable = mMovement != null || mInput != null;
889        boolean clickable = focusable;
890        boolean longClickable = focusable;
891
892        n = a.getIndexCount();
893        for (int i = 0; i < n; i++) {
894            int attr = a.getIndex(i);
895
896            switch (attr) {
897            case com.android.internal.R.styleable.View_focusable:
898                focusable = a.getBoolean(attr, focusable);
899                break;
900
901            case com.android.internal.R.styleable.View_clickable:
902                clickable = a.getBoolean(attr, clickable);
903                break;
904
905            case com.android.internal.R.styleable.View_longClickable:
906                longClickable = a.getBoolean(attr, longClickable);
907                break;
908            }
909        }
910        a.recycle();
911
912        setFocusable(focusable);
913        setClickable(clickable);
914        setLongClickable(longClickable);
915    }
916
917    private void setTypefaceByIndex(int typefaceIndex, int styleIndex) {
918        Typeface tf = null;
919        switch (typefaceIndex) {
920            case SANS:
921                tf = Typeface.SANS_SERIF;
922                break;
923
924            case SERIF:
925                tf = Typeface.SERIF;
926                break;
927
928            case MONOSPACE:
929                tf = Typeface.MONOSPACE;
930                break;
931        }
932
933        setTypeface(tf, styleIndex);
934    }
935
936    /**
937     * Sets the typeface and style in which the text should be displayed,
938     * and turns on the fake bold and italic bits in the Paint if the
939     * Typeface that you provided does not have all the bits in the
940     * style that you specified.
941     *
942     * @attr ref android.R.styleable#TextView_typeface
943     * @attr ref android.R.styleable#TextView_textStyle
944     */
945    public void setTypeface(Typeface tf, int style) {
946        if (style > 0) {
947            if (tf == null) {
948                tf = Typeface.defaultFromStyle(style);
949            } else {
950                tf = Typeface.create(tf, style);
951            }
952
953            setTypeface(tf);
954            // now compute what (if any) algorithmic styling is needed
955            int typefaceStyle = tf != null ? tf.getStyle() : 0;
956            int need = style & ~typefaceStyle;
957            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
958            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
959        } else {
960            mTextPaint.setFakeBoldText(false);
961            mTextPaint.setTextSkewX(0);
962            setTypeface(tf);
963        }
964    }
965
966    /**
967     * Subclasses override this to specify that they have a KeyListener
968     * by default even if not specifically called for in the XML options.
969     */
970    protected boolean getDefaultEditable() {
971        return false;
972    }
973
974    /**
975     * Subclasses override this to specify a default movement method.
976     */
977    protected MovementMethod getDefaultMovementMethod() {
978        return null;
979    }
980
981    /**
982     * Return the text the TextView is displaying. If setText() was called with
983     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
984     * the return value from this method to Spannable or Editable, respectively.
985     *
986     * Note: The content of the return value should not be modified. If you want
987     * a modifiable one, you should make your own copy first.
988     */
989    @ViewDebug.CapturedViewProperty
990    public CharSequence getText() {
991        return mText;
992    }
993
994    /**
995     * Returns the length, in characters, of the text managed by this TextView
996     */
997    public int length() {
998        return mText.length();
999    }
1000
1001    /**
1002     * Return the text the TextView is displaying as an Editable object.  If
1003     * the text is not editable, null is returned.
1004     *
1005     * @see #getText
1006     */
1007    public Editable getEditableText() {
1008        return (mText instanceof Editable) ? (Editable)mText : null;
1009    }
1010
1011    /**
1012     * @return the height of one standard line in pixels.  Note that markup
1013     * within the text can cause individual lines to be taller or shorter
1014     * than this height, and the layout may contain additional first-
1015     * or last-line padding.
1016     */
1017    public int getLineHeight() {
1018        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult
1019                          + mSpacingAdd);
1020    }
1021
1022    /**
1023     * @return the Layout that is currently being used to display the text.
1024     * This can be null if the text or width has recently changes.
1025     */
1026    public final Layout getLayout() {
1027        return mLayout;
1028    }
1029
1030    /**
1031     * @return the current key listener for this TextView.
1032     * This will frequently be null for non-EditText TextViews.
1033     */
1034    public final KeyListener getKeyListener() {
1035        return mInput;
1036    }
1037
1038    /**
1039     * Sets the key listener to be used with this TextView.  This can be null
1040     * to disallow user input.  Note that this method has significant and
1041     * subtle interactions with soft keyboards and other input method:
1042     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1043     * for important details.  Calling this method will replace the current
1044     * content type of the text view with the content type returned by the
1045     * key listener.
1046     * <p>
1047     * Be warned that if you want a TextView with a key listener or movement
1048     * method not to be focusable, or if you want a TextView without a
1049     * key listener or movement method to be focusable, you must call
1050     * {@link #setFocusable} again after calling this to get the focusability
1051     * back the way you want it.
1052     *
1053     * @attr ref android.R.styleable#TextView_numeric
1054     * @attr ref android.R.styleable#TextView_digits
1055     * @attr ref android.R.styleable#TextView_phoneNumber
1056     * @attr ref android.R.styleable#TextView_inputMethod
1057     * @attr ref android.R.styleable#TextView_capitalize
1058     * @attr ref android.R.styleable#TextView_autoText
1059     */
1060    public void setKeyListener(KeyListener input) {
1061        setKeyListenerOnly(input);
1062        fixFocusableAndClickableSettings();
1063
1064        if (input != null) {
1065            try {
1066                mInputType = mInput.getInputType();
1067            } catch (IncompatibleClassChangeError e) {
1068                mInputType = EditorInfo.TYPE_CLASS_TEXT;
1069            }
1070            if ((mInputType&EditorInfo.TYPE_MASK_CLASS)
1071                    == EditorInfo.TYPE_CLASS_TEXT) {
1072                if (mSingleLine) {
1073                    mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
1074                } else {
1075                    mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
1076                }
1077            }
1078        } else {
1079            mInputType = EditorInfo.TYPE_NULL;
1080        }
1081
1082        InputMethodManager imm = InputMethodManager.peekInstance();
1083        if (imm != null) imm.restartInput(this);
1084    }
1085
1086    private void setKeyListenerOnly(KeyListener input) {
1087        mInput = input;
1088        if (mInput != null && !(mText instanceof Editable))
1089            setText(mText);
1090
1091        setFilters((Editable) mText, mFilters);
1092    }
1093
1094    /**
1095     * @return the movement method being used for this TextView.
1096     * This will frequently be null for non-EditText TextViews.
1097     */
1098    public final MovementMethod getMovementMethod() {
1099        return mMovement;
1100    }
1101
1102    /**
1103     * Sets the movement method (arrow key handler) to be used for
1104     * this TextView.  This can be null to disallow using the arrow keys
1105     * to move the cursor or scroll the view.
1106     * <p>
1107     * Be warned that if you want a TextView with a key listener or movement
1108     * method not to be focusable, or if you want a TextView without a
1109     * key listener or movement method to be focusable, you must call
1110     * {@link #setFocusable} again after calling this to get the focusability
1111     * back the way you want it.
1112     */
1113    public final void setMovementMethod(MovementMethod movement) {
1114        mMovement = movement;
1115
1116        if (mMovement != null && !(mText instanceof Spannable))
1117            setText(mText);
1118
1119        fixFocusableAndClickableSettings();
1120    }
1121
1122    private void fixFocusableAndClickableSettings() {
1123        if ((mMovement != null) || mInput != null) {
1124            setFocusable(true);
1125            setClickable(true);
1126            setLongClickable(true);
1127        } else {
1128            setFocusable(false);
1129            setClickable(false);
1130            setLongClickable(false);
1131        }
1132    }
1133
1134    /**
1135     * @return the current transformation method for this TextView.
1136     * This will frequently be null except for single-line and password
1137     * fields.
1138     */
1139    public final TransformationMethod getTransformationMethod() {
1140        return mTransformation;
1141    }
1142
1143    /**
1144     * Sets the transformation that is applied to the text that this
1145     * TextView is displaying.
1146     *
1147     * @attr ref android.R.styleable#TextView_password
1148     * @attr ref android.R.styleable#TextView_singleLine
1149     */
1150    public final void setTransformationMethod(TransformationMethod method) {
1151        if (method == mTransformation) {
1152            // Avoid the setText() below if the transformation is
1153            // the same.
1154            return;
1155        }
1156        if (mTransformation != null) {
1157            if (mText instanceof Spannable) {
1158                ((Spannable) mText).removeSpan(mTransformation);
1159            }
1160        }
1161
1162        mTransformation = method;
1163
1164        setText(mText);
1165    }
1166
1167    /**
1168     * Returns the top padding of the view, plus space for the top
1169     * Drawable if any.
1170     */
1171    public int getCompoundPaddingTop() {
1172        final Drawables dr = mDrawables;
1173        if (dr == null || dr.mDrawableTop == null) {
1174            return mPaddingTop;
1175        } else {
1176            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1177        }
1178    }
1179
1180    /**
1181     * Returns the bottom padding of the view, plus space for the bottom
1182     * Drawable if any.
1183     */
1184    public int getCompoundPaddingBottom() {
1185        final Drawables dr = mDrawables;
1186        if (dr == null || dr.mDrawableBottom == null) {
1187            return mPaddingBottom;
1188        } else {
1189            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1190        }
1191    }
1192
1193    /**
1194     * Returns the left padding of the view, plus space for the left
1195     * Drawable if any.
1196     */
1197    public int getCompoundPaddingLeft() {
1198        final Drawables dr = mDrawables;
1199        if (dr == null || dr.mDrawableLeft == null) {
1200            return mPaddingLeft;
1201        } else {
1202            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1203        }
1204    }
1205
1206    /**
1207     * Returns the right padding of the view, plus space for the right
1208     * Drawable if any.
1209     */
1210    public int getCompoundPaddingRight() {
1211        final Drawables dr = mDrawables;
1212        if (dr == null || dr.mDrawableRight == null) {
1213            return mPaddingRight;
1214        } else {
1215            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1216        }
1217    }
1218
1219    /**
1220     * Returns the extended top padding of the view, including both the
1221     * top Drawable if any and any extra space to keep more than maxLines
1222     * of text from showing.  It is only valid to call this after measuring.
1223     */
1224    public int getExtendedPaddingTop() {
1225        if (mMaxMode != LINES) {
1226            return getCompoundPaddingTop();
1227        }
1228
1229        if (mLayout.getLineCount() <= mMaximum) {
1230            return getCompoundPaddingTop();
1231        }
1232
1233        int top = getCompoundPaddingTop();
1234        int bottom = getCompoundPaddingBottom();
1235        int viewht = getHeight() - top - bottom;
1236        int layoutht = mLayout.getLineTop(mMaximum);
1237
1238        if (layoutht >= viewht) {
1239            return top;
1240        }
1241
1242        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1243        if (gravity == Gravity.TOP) {
1244            return top;
1245        } else if (gravity == Gravity.BOTTOM) {
1246            return top + viewht - layoutht;
1247        } else { // (gravity == Gravity.CENTER_VERTICAL)
1248            return top + (viewht - layoutht) / 2;
1249        }
1250    }
1251
1252    /**
1253     * Returns the extended bottom padding of the view, including both the
1254     * bottom Drawable if any and any extra space to keep more than maxLines
1255     * of text from showing.  It is only valid to call this after measuring.
1256     */
1257    public int getExtendedPaddingBottom() {
1258        if (mMaxMode != LINES) {
1259            return getCompoundPaddingBottom();
1260        }
1261
1262        if (mLayout.getLineCount() <= mMaximum) {
1263            return getCompoundPaddingBottom();
1264        }
1265
1266        int top = getCompoundPaddingTop();
1267        int bottom = getCompoundPaddingBottom();
1268        int viewht = getHeight() - top - bottom;
1269        int layoutht = mLayout.getLineTop(mMaximum);
1270
1271        if (layoutht >= viewht) {
1272            return bottom;
1273        }
1274
1275        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1276        if (gravity == Gravity.TOP) {
1277            return bottom + viewht - layoutht;
1278        } else if (gravity == Gravity.BOTTOM) {
1279            return bottom;
1280        } else { // (gravity == Gravity.CENTER_VERTICAL)
1281            return bottom + (viewht - layoutht) / 2;
1282        }
1283    }
1284
1285    /**
1286     * Returns the total left padding of the view, including the left
1287     * Drawable if any.
1288     */
1289    public int getTotalPaddingLeft() {
1290        return getCompoundPaddingLeft();
1291    }
1292
1293    /**
1294     * Returns the total right padding of the view, including the right
1295     * Drawable if any.
1296     */
1297    public int getTotalPaddingRight() {
1298        return getCompoundPaddingRight();
1299    }
1300
1301    /**
1302     * Returns the total top padding of the view, including the top
1303     * Drawable if any, the extra space to keep more than maxLines
1304     * from showing, and the vertical offset for gravity, if any.
1305     */
1306    public int getTotalPaddingTop() {
1307        return getExtendedPaddingTop() + getVerticalOffset(true);
1308    }
1309
1310    /**
1311     * Returns the total bottom padding of the view, including the bottom
1312     * Drawable if any, the extra space to keep more than maxLines
1313     * from showing, and the vertical offset for gravity, if any.
1314     */
1315    public int getTotalPaddingBottom() {
1316        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1317    }
1318
1319    /**
1320     * Sets the Drawables (if any) to appear to the left of, above,
1321     * to the right of, and below the text.  Use null if you do not
1322     * want a Drawable there.  The Drawables must already have had
1323     * {@link Drawable#setBounds} called.
1324     *
1325     * @attr ref android.R.styleable#TextView_drawableLeft
1326     * @attr ref android.R.styleable#TextView_drawableTop
1327     * @attr ref android.R.styleable#TextView_drawableRight
1328     * @attr ref android.R.styleable#TextView_drawableBottom
1329     */
1330    public void setCompoundDrawables(Drawable left, Drawable top,
1331                                     Drawable right, Drawable bottom) {
1332        Drawables dr = mDrawables;
1333
1334        final boolean drawables = left != null || top != null
1335                || right != null || bottom != null;
1336
1337        if (!drawables) {
1338            // Clearing drawables...  can we free the data structure?
1339            if (dr != null) {
1340                if (dr.mDrawablePadding == 0) {
1341                    mDrawables = null;
1342                } else {
1343                    // We need to retain the last set padding, so just clear
1344                    // out all of the fields in the existing structure.
1345                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
1346                    dr.mDrawableLeft = null;
1347                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1348                    dr.mDrawableTop = null;
1349                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
1350                    dr.mDrawableRight = null;
1351                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1352                    dr.mDrawableBottom = null;
1353                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1354                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1355                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1356                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1357                }
1358            }
1359        } else {
1360            if (dr == null) {
1361                mDrawables = dr = new Drawables();
1362            }
1363
1364            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
1365                dr.mDrawableLeft.setCallback(null);
1366            }
1367            dr.mDrawableLeft = left;
1368            if (dr.mDrawableTop != left && dr.mDrawableTop != null) {
1369                dr.mDrawableTop.setCallback(null);
1370            }
1371            dr.mDrawableTop = top;
1372            if (dr.mDrawableRight != left && dr.mDrawableRight != null) {
1373                dr.mDrawableRight.setCallback(null);
1374            }
1375            dr.mDrawableRight = right;
1376            if (dr.mDrawableBottom != left && dr.mDrawableBottom != null) {
1377                dr.mDrawableBottom.setCallback(null);
1378            }
1379            dr.mDrawableBottom = bottom;
1380
1381            final Rect compoundRect = dr.mCompoundRect;
1382            int[] state;
1383
1384            state = getDrawableState();
1385
1386            if (left != null) {
1387                left.setState(state);
1388                left.copyBounds(compoundRect);
1389                left.setCallback(this);
1390                dr.mDrawableSizeLeft = compoundRect.width();
1391                dr.mDrawableHeightLeft = compoundRect.height();
1392            } else {
1393                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1394            }
1395
1396            if (right != null) {
1397                right.setState(state);
1398                right.copyBounds(compoundRect);
1399                right.setCallback(this);
1400                dr.mDrawableSizeRight = compoundRect.width();
1401                dr.mDrawableHeightRight = compoundRect.height();
1402            } else {
1403                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1404            }
1405
1406            if (top != null) {
1407                top.setState(state);
1408                top.copyBounds(compoundRect);
1409                top.setCallback(this);
1410                dr.mDrawableSizeTop = compoundRect.height();
1411                dr.mDrawableWidthTop = compoundRect.width();
1412            } else {
1413                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1414            }
1415
1416            if (bottom != null) {
1417                bottom.setState(state);
1418                bottom.copyBounds(compoundRect);
1419                bottom.setCallback(this);
1420                dr.mDrawableSizeBottom = compoundRect.height();
1421                dr.mDrawableWidthBottom = compoundRect.width();
1422            } else {
1423                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1424            }
1425        }
1426
1427        invalidate();
1428        requestLayout();
1429    }
1430
1431    /**
1432     * Sets the Drawables (if any) to appear to the left of, above,
1433     * to the right of, and below the text.  Use 0 if you do not
1434     * want a Drawable there. The Drawables' bounds will be set to
1435     * their intrinsic bounds.
1436     *
1437     * @param left Resource identifier of the left Drawable.
1438     * @param top Resource identifier of the top Drawable.
1439     * @param right Resource identifier of the right Drawable.
1440     * @param bottom Resource identifier of the bottom Drawable.
1441     *
1442     * @attr ref android.R.styleable#TextView_drawableLeft
1443     * @attr ref android.R.styleable#TextView_drawableTop
1444     * @attr ref android.R.styleable#TextView_drawableRight
1445     * @attr ref android.R.styleable#TextView_drawableBottom
1446     */
1447    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1448        final Resources resources = getContext().getResources();
1449        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null,
1450                top != 0 ? resources.getDrawable(top) : null,
1451                right != 0 ? resources.getDrawable(right) : null,
1452                bottom != 0 ? resources.getDrawable(bottom) : null);
1453    }
1454
1455    /**
1456     * Sets the Drawables (if any) to appear to the left of, above,
1457     * to the right of, and below the text.  Use null if you do not
1458     * want a Drawable there. The Drawables' bounds will be set to
1459     * their intrinsic bounds.
1460     *
1461     * @attr ref android.R.styleable#TextView_drawableLeft
1462     * @attr ref android.R.styleable#TextView_drawableTop
1463     * @attr ref android.R.styleable#TextView_drawableRight
1464     * @attr ref android.R.styleable#TextView_drawableBottom
1465     */
1466    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1467            Drawable right, Drawable bottom) {
1468
1469        if (left != null) {
1470            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1471        }
1472        if (right != null) {
1473            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1474        }
1475        if (top != null) {
1476            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1477        }
1478        if (bottom != null) {
1479            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
1480        }
1481        setCompoundDrawables(left, top, right, bottom);
1482    }
1483
1484    /**
1485     * Returns drawables for the left, top, right, and bottom borders.
1486     */
1487    public Drawable[] getCompoundDrawables() {
1488        final Drawables dr = mDrawables;
1489        if (dr != null) {
1490            return new Drawable[] {
1491                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
1492            };
1493        } else {
1494            return new Drawable[] { null, null, null, null };
1495        }
1496    }
1497
1498    /**
1499     * Sets the size of the padding between the compound drawables and
1500     * the text.
1501     *
1502     * @attr ref android.R.styleable#TextView_drawablePadding
1503     */
1504    public void setCompoundDrawablePadding(int pad) {
1505        Drawables dr = mDrawables;
1506        if (pad == 0) {
1507            if (dr != null) {
1508                dr.mDrawablePadding = pad;
1509            }
1510        } else {
1511            if (dr == null) {
1512                mDrawables = dr = new Drawables();
1513            }
1514            dr.mDrawablePadding = pad;
1515        }
1516
1517        invalidate();
1518        requestLayout();
1519    }
1520
1521    /**
1522     * Returns the padding between the compound drawables and the text.
1523     */
1524    public int getCompoundDrawablePadding() {
1525        final Drawables dr = mDrawables;
1526        return dr != null ? dr.mDrawablePadding : 0;
1527    }
1528
1529    @Override
1530    public void setPadding(int left, int top, int right, int bottom) {
1531        if (left != mPaddingLeft ||
1532            right != mPaddingRight ||
1533            top != mPaddingTop ||
1534            bottom != mPaddingBottom) {
1535            nullLayouts();
1536        }
1537
1538        // the super call will requestLayout()
1539        super.setPadding(left, top, right, bottom);
1540        invalidate();
1541    }
1542
1543    /**
1544     * Gets the autolink mask of the text.  See {@link
1545     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1546     * possible values.
1547     *
1548     * @attr ref android.R.styleable#TextView_autoLink
1549     */
1550    public final int getAutoLinkMask() {
1551        return mAutoLinkMask;
1552    }
1553
1554    /**
1555     * Sets the text color, size, style, hint color, and highlight color
1556     * from the specified TextAppearance resource.
1557     */
1558    public void setTextAppearance(Context context, int resid) {
1559        TypedArray appearance =
1560            context.obtainStyledAttributes(resid,
1561                                           com.android.internal.R.styleable.TextAppearance);
1562
1563        int color;
1564        ColorStateList colors;
1565        int ts;
1566
1567        color = appearance.getColor(com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
1568        if (color != 0) {
1569            setHighlightColor(color);
1570        }
1571
1572        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1573                                              TextAppearance_textColor);
1574        if (colors != null) {
1575            setTextColor(colors);
1576        }
1577
1578        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
1579                                              TextAppearance_textSize, 0);
1580        if (ts != 0) {
1581            setRawTextSize(ts);
1582        }
1583
1584        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1585                                              TextAppearance_textColorHint);
1586        if (colors != null) {
1587            setHintTextColor(colors);
1588        }
1589
1590        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1591                                              TextAppearance_textColorLink);
1592        if (colors != null) {
1593            setLinkTextColor(colors);
1594        }
1595
1596        int typefaceIndex, styleIndex;
1597
1598        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
1599                                          TextAppearance_typeface, -1);
1600        styleIndex = appearance.getInt(com.android.internal.R.styleable.
1601                                       TextAppearance_textStyle, -1);
1602
1603        setTypefaceByIndex(typefaceIndex, styleIndex);
1604        appearance.recycle();
1605    }
1606
1607    /**
1608     * @return the size (in pixels) of the default text size in this TextView.
1609     */
1610    public float getTextSize() {
1611        return mTextPaint.getTextSize();
1612    }
1613
1614    /**
1615     * Set the default text size to the given value, interpreted as "scaled
1616     * pixel" units.  This size is adjusted based on the current density and
1617     * user font size preference.
1618     *
1619     * @param size The scaled pixel size.
1620     *
1621     * @attr ref android.R.styleable#TextView_textSize
1622     */
1623    @android.view.RemotableViewMethod
1624    public void setTextSize(float size) {
1625        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
1626    }
1627
1628    /**
1629     * Set the default text size to a given unit and value.  See {@link
1630     * TypedValue} for the possible dimension units.
1631     *
1632     * @param unit The desired dimension unit.
1633     * @param size The desired size in the given units.
1634     *
1635     * @attr ref android.R.styleable#TextView_textSize
1636     */
1637    public void setTextSize(int unit, float size) {
1638        Context c = getContext();
1639        Resources r;
1640
1641        if (c == null)
1642            r = Resources.getSystem();
1643        else
1644            r = c.getResources();
1645
1646        setRawTextSize(TypedValue.applyDimension(
1647            unit, size, r.getDisplayMetrics()));
1648    }
1649
1650    private void setRawTextSize(float size) {
1651        if (size != mTextPaint.getTextSize()) {
1652            mTextPaint.setTextSize(size);
1653
1654            if (mLayout != null) {
1655                nullLayouts();
1656                requestLayout();
1657                invalidate();
1658            }
1659        }
1660    }
1661
1662    /**
1663     * @return the extent by which text is currently being stretched
1664     * horizontally.  This will usually be 1.
1665     */
1666    public float getTextScaleX() {
1667        return mTextPaint.getTextScaleX();
1668    }
1669
1670    /**
1671     * Sets the extent by which text should be stretched horizontally.
1672     *
1673     * @attr ref android.R.styleable#TextView_textScaleX
1674     */
1675    @android.view.RemotableViewMethod
1676    public void setTextScaleX(float size) {
1677        if (size != mTextPaint.getTextScaleX()) {
1678            mUserSetTextScaleX = true;
1679            mTextPaint.setTextScaleX(size);
1680
1681            if (mLayout != null) {
1682                nullLayouts();
1683                requestLayout();
1684                invalidate();
1685            }
1686        }
1687    }
1688
1689    /**
1690     * Sets the typeface and style in which the text should be displayed.
1691     * Note that not all Typeface families actually have bold and italic
1692     * variants, so you may need to use
1693     * {@link #setTypeface(Typeface, int)} to get the appearance
1694     * that you actually want.
1695     *
1696     * @attr ref android.R.styleable#TextView_typeface
1697     * @attr ref android.R.styleable#TextView_textStyle
1698     */
1699    public void setTypeface(Typeface tf) {
1700        if (mTextPaint.getTypeface() != tf) {
1701            mTextPaint.setTypeface(tf);
1702
1703            if (mLayout != null) {
1704                nullLayouts();
1705                requestLayout();
1706                invalidate();
1707            }
1708        }
1709    }
1710
1711    /**
1712     * @return the current typeface and style in which the text is being
1713     * displayed.
1714     */
1715    public Typeface getTypeface() {
1716        return mTextPaint.getTypeface();
1717    }
1718
1719    /**
1720     * Sets the text color for all the states (normal, selected,
1721     * focused) to be this color.
1722     *
1723     * @attr ref android.R.styleable#TextView_textColor
1724     */
1725    @android.view.RemotableViewMethod
1726    public void setTextColor(int color) {
1727        mTextColor = ColorStateList.valueOf(color);
1728        updateTextColors();
1729    }
1730
1731    /**
1732     * Sets the text color.
1733     *
1734     * @attr ref android.R.styleable#TextView_textColor
1735     */
1736    public void setTextColor(ColorStateList colors) {
1737        if (colors == null) {
1738            throw new NullPointerException();
1739        }
1740
1741        mTextColor = colors;
1742        updateTextColors();
1743    }
1744
1745    /**
1746     * Return the set of text colors.
1747     *
1748     * @return Returns the set of text colors.
1749     */
1750    public final ColorStateList getTextColors() {
1751        return mTextColor;
1752    }
1753
1754    /**
1755     * <p>Return the current color selected for normal text.</p>
1756     *
1757     * @return Returns the current text color.
1758     */
1759    public final int getCurrentTextColor() {
1760        return mCurTextColor;
1761    }
1762
1763    /**
1764     * Sets the color used to display the selection highlight.
1765     *
1766     * @attr ref android.R.styleable#TextView_textColorHighlight
1767     */
1768    @android.view.RemotableViewMethod
1769    public void setHighlightColor(int color) {
1770        if (mHighlightColor != color) {
1771            mHighlightColor = color;
1772            invalidate();
1773        }
1774    }
1775
1776    /**
1777     * Gives the text a shadow of the specified radius and color, the specified
1778     * distance from its normal position.
1779     *
1780     * @attr ref android.R.styleable#TextView_shadowColor
1781     * @attr ref android.R.styleable#TextView_shadowDx
1782     * @attr ref android.R.styleable#TextView_shadowDy
1783     * @attr ref android.R.styleable#TextView_shadowRadius
1784     */
1785    public void setShadowLayer(float radius, float dx, float dy, int color) {
1786        mTextPaint.setShadowLayer(radius, dx, dy, color);
1787
1788        mShadowRadius = radius;
1789        mShadowDx = dx;
1790        mShadowDy = dy;
1791
1792        invalidate();
1793    }
1794
1795    /**
1796     * @return the base paint used for the text.  Please use this only to
1797     * consult the Paint's properties and not to change them.
1798     */
1799    public TextPaint getPaint() {
1800        return mTextPaint;
1801    }
1802
1803    /**
1804     * Sets the autolink mask of the text.  See {@link
1805     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1806     * possible values.
1807     *
1808     * @attr ref android.R.styleable#TextView_autoLink
1809     */
1810    @android.view.RemotableViewMethod
1811    public final void setAutoLinkMask(int mask) {
1812        mAutoLinkMask = mask;
1813    }
1814
1815    /**
1816     * Sets whether the movement method will automatically be set to
1817     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1818     * set to nonzero and links are detected in {@link #setText}.
1819     * The default is true.
1820     *
1821     * @attr ref android.R.styleable#TextView_linksClickable
1822     */
1823    @android.view.RemotableViewMethod
1824    public final void setLinksClickable(boolean whether) {
1825        mLinksClickable = whether;
1826    }
1827
1828    /**
1829     * Returns whether the movement method will automatically be set to
1830     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1831     * set to nonzero and links are detected in {@link #setText}.
1832     * The default is true.
1833     *
1834     * @attr ref android.R.styleable#TextView_linksClickable
1835     */
1836    public final boolean getLinksClickable() {
1837        return mLinksClickable;
1838    }
1839
1840    /**
1841     * Returns the list of URLSpans attached to the text
1842     * (by {@link Linkify} or otherwise) if any.  You can call
1843     * {@link URLSpan#getURL} on them to find where they link to
1844     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
1845     * to find the region of the text they are attached to.
1846     */
1847    public URLSpan[] getUrls() {
1848        if (mText instanceof Spanned) {
1849            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
1850        } else {
1851            return new URLSpan[0];
1852        }
1853    }
1854
1855    /**
1856     * Sets the color of the hint text.
1857     *
1858     * @attr ref android.R.styleable#TextView_textColorHint
1859     */
1860    @android.view.RemotableViewMethod
1861    public final void setHintTextColor(int color) {
1862        mHintTextColor = ColorStateList.valueOf(color);
1863        updateTextColors();
1864    }
1865
1866    /**
1867     * Sets the color of the hint text.
1868     *
1869     * @attr ref android.R.styleable#TextView_textColorHint
1870     */
1871    public final void setHintTextColor(ColorStateList colors) {
1872        mHintTextColor = colors;
1873        updateTextColors();
1874    }
1875
1876    /**
1877     * <p>Return the color used to paint the hint text.</p>
1878     *
1879     * @return Returns the list of hint text colors.
1880     */
1881    public final ColorStateList getHintTextColors() {
1882        return mHintTextColor;
1883    }
1884
1885    /**
1886     * <p>Return the current color selected to paint the hint text.</p>
1887     *
1888     * @return Returns the current hint text color.
1889     */
1890    public final int getCurrentHintTextColor() {
1891        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
1892    }
1893
1894    /**
1895     * Sets the color of links in the text.
1896     *
1897     * @attr ref android.R.styleable#TextView_textColorLink
1898     */
1899    @android.view.RemotableViewMethod
1900    public final void setLinkTextColor(int color) {
1901        mLinkTextColor = ColorStateList.valueOf(color);
1902        updateTextColors();
1903    }
1904
1905    /**
1906     * Sets the color of links in the text.
1907     *
1908     * @attr ref android.R.styleable#TextView_textColorLink
1909     */
1910    public final void setLinkTextColor(ColorStateList colors) {
1911        mLinkTextColor = colors;
1912        updateTextColors();
1913    }
1914
1915    /**
1916     * <p>Returns the color used to paint links in the text.</p>
1917     *
1918     * @return Returns the list of link text colors.
1919     */
1920    public final ColorStateList getLinkTextColors() {
1921        return mLinkTextColor;
1922    }
1923
1924    /**
1925     * Sets the horizontal alignment of the text and the
1926     * vertical gravity that will be used when there is extra space
1927     * in the TextView beyond what is required for the text itself.
1928     *
1929     * @see android.view.Gravity
1930     * @attr ref android.R.styleable#TextView_gravity
1931     */
1932    public void setGravity(int gravity) {
1933        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == 0) {
1934            gravity |= Gravity.LEFT;
1935        }
1936        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
1937            gravity |= Gravity.TOP;
1938        }
1939
1940        boolean newLayout = false;
1941
1942        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) !=
1943            (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK)) {
1944            newLayout = true;
1945        }
1946
1947        if (gravity != mGravity) {
1948            invalidate();
1949        }
1950
1951        mGravity = gravity;
1952
1953        if (mLayout != null && newLayout) {
1954            // XXX this is heavy-handed because no actual content changes.
1955            int want = mLayout.getWidth();
1956            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
1957
1958            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
1959                          mRight - mLeft - getCompoundPaddingLeft() -
1960                          getCompoundPaddingRight(), true);
1961        }
1962    }
1963
1964    /**
1965     * Returns the horizontal and vertical alignment of this TextView.
1966     *
1967     * @see android.view.Gravity
1968     * @attr ref android.R.styleable#TextView_gravity
1969     */
1970    public int getGravity() {
1971        return mGravity;
1972    }
1973
1974    /**
1975     * @return the flags on the Paint being used to display the text.
1976     * @see Paint#getFlags
1977     */
1978    public int getPaintFlags() {
1979        return mTextPaint.getFlags();
1980    }
1981
1982    /**
1983     * Sets flags on the Paint being used to display the text and
1984     * reflows the text if they are different from the old flags.
1985     * @see Paint#setFlags
1986     */
1987    @android.view.RemotableViewMethod
1988    public void setPaintFlags(int flags) {
1989        if (mTextPaint.getFlags() != flags) {
1990            mTextPaint.setFlags(flags);
1991
1992            if (mLayout != null) {
1993                nullLayouts();
1994                requestLayout();
1995                invalidate();
1996            }
1997        }
1998    }
1999
2000    /**
2001     * Sets whether the text should be allowed to be wider than the
2002     * View is.  If false, it will be wrapped to the width of the View.
2003     *
2004     * @attr ref android.R.styleable#TextView_scrollHorizontally
2005     */
2006    public void setHorizontallyScrolling(boolean whether) {
2007        mHorizontallyScrolling = whether;
2008
2009        if (mLayout != null) {
2010            nullLayouts();
2011            requestLayout();
2012            invalidate();
2013        }
2014    }
2015
2016    /**
2017     * Makes the TextView at least this many lines tall
2018     *
2019     * @attr ref android.R.styleable#TextView_minLines
2020     */
2021    @android.view.RemotableViewMethod
2022    public void setMinLines(int minlines) {
2023        mMinimum = minlines;
2024        mMinMode = LINES;
2025
2026        requestLayout();
2027        invalidate();
2028    }
2029
2030    /**
2031     * Makes the TextView at least this many pixels tall
2032     *
2033     * @attr ref android.R.styleable#TextView_minHeight
2034     */
2035    @android.view.RemotableViewMethod
2036    public void setMinHeight(int minHeight) {
2037        mMinimum = minHeight;
2038        mMinMode = PIXELS;
2039
2040        requestLayout();
2041        invalidate();
2042    }
2043
2044    /**
2045     * Makes the TextView at most this many lines tall
2046     *
2047     * @attr ref android.R.styleable#TextView_maxLines
2048     */
2049    @android.view.RemotableViewMethod
2050    public void setMaxLines(int maxlines) {
2051        mMaximum = maxlines;
2052        mMaxMode = LINES;
2053
2054        requestLayout();
2055        invalidate();
2056    }
2057
2058    /**
2059     * Makes the TextView at most this many pixels tall
2060     *
2061     * @attr ref android.R.styleable#TextView_maxHeight
2062     */
2063    @android.view.RemotableViewMethod
2064    public void setMaxHeight(int maxHeight) {
2065        mMaximum = maxHeight;
2066        mMaxMode = PIXELS;
2067
2068        requestLayout();
2069        invalidate();
2070    }
2071
2072    /**
2073     * Makes the TextView exactly this many lines tall
2074     *
2075     * @attr ref android.R.styleable#TextView_lines
2076     */
2077    @android.view.RemotableViewMethod
2078    public void setLines(int lines) {
2079        mMaximum = mMinimum = lines;
2080        mMaxMode = mMinMode = LINES;
2081
2082        requestLayout();
2083        invalidate();
2084    }
2085
2086    /**
2087     * Makes the TextView exactly this many pixels tall.
2088     * You could do the same thing by specifying this number in the
2089     * LayoutParams.
2090     *
2091     * @attr ref android.R.styleable#TextView_height
2092     */
2093    @android.view.RemotableViewMethod
2094    public void setHeight(int pixels) {
2095        mMaximum = mMinimum = pixels;
2096        mMaxMode = mMinMode = PIXELS;
2097
2098        requestLayout();
2099        invalidate();
2100    }
2101
2102    /**
2103     * Makes the TextView at least this many ems wide
2104     *
2105     * @attr ref android.R.styleable#TextView_minEms
2106     */
2107    @android.view.RemotableViewMethod
2108    public void setMinEms(int minems) {
2109        mMinWidth = minems;
2110        mMinWidthMode = EMS;
2111
2112        requestLayout();
2113        invalidate();
2114    }
2115
2116    /**
2117     * Makes the TextView at least this many pixels wide
2118     *
2119     * @attr ref android.R.styleable#TextView_minWidth
2120     */
2121    @android.view.RemotableViewMethod
2122    public void setMinWidth(int minpixels) {
2123        mMinWidth = minpixels;
2124        mMinWidthMode = PIXELS;
2125
2126        requestLayout();
2127        invalidate();
2128    }
2129
2130    /**
2131     * Makes the TextView at most this many ems wide
2132     *
2133     * @attr ref android.R.styleable#TextView_maxEms
2134     */
2135    @android.view.RemotableViewMethod
2136    public void setMaxEms(int maxems) {
2137        mMaxWidth = maxems;
2138        mMaxWidthMode = EMS;
2139
2140        requestLayout();
2141        invalidate();
2142    }
2143
2144    /**
2145     * Makes the TextView at most this many pixels wide
2146     *
2147     * @attr ref android.R.styleable#TextView_maxWidth
2148     */
2149    @android.view.RemotableViewMethod
2150    public void setMaxWidth(int maxpixels) {
2151        mMaxWidth = maxpixels;
2152        mMaxWidthMode = PIXELS;
2153
2154        requestLayout();
2155        invalidate();
2156    }
2157
2158    /**
2159     * Makes the TextView exactly this many ems wide
2160     *
2161     * @attr ref android.R.styleable#TextView_ems
2162     */
2163    @android.view.RemotableViewMethod
2164    public void setEms(int ems) {
2165        mMaxWidth = mMinWidth = ems;
2166        mMaxWidthMode = mMinWidthMode = EMS;
2167
2168        requestLayout();
2169        invalidate();
2170    }
2171
2172    /**
2173     * Makes the TextView exactly this many pixels wide.
2174     * You could do the same thing by specifying this number in the
2175     * LayoutParams.
2176     *
2177     * @attr ref android.R.styleable#TextView_width
2178     */
2179    @android.view.RemotableViewMethod
2180    public void setWidth(int pixels) {
2181        mMaxWidth = mMinWidth = pixels;
2182        mMaxWidthMode = mMinWidthMode = PIXELS;
2183
2184        requestLayout();
2185        invalidate();
2186    }
2187
2188
2189    /**
2190     * Sets line spacing for this TextView.  Each line will have its height
2191     * multiplied by <code>mult</code> and have <code>add</code> added to it.
2192     *
2193     * @attr ref android.R.styleable#TextView_lineSpacingExtra
2194     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
2195     */
2196    public void setLineSpacing(float add, float mult) {
2197        mSpacingMult = mult;
2198        mSpacingAdd = add;
2199
2200        if (mLayout != null) {
2201            nullLayouts();
2202            requestLayout();
2203            invalidate();
2204        }
2205    }
2206
2207    /**
2208     * Convenience method: Append the specified text to the TextView's
2209     * display buffer, upgrading it to BufferType.EDITABLE if it was
2210     * not already editable.
2211     */
2212    public final void append(CharSequence text) {
2213        append(text, 0, text.length());
2214    }
2215
2216    /**
2217     * Convenience method: Append the specified text slice to the TextView's
2218     * display buffer, upgrading it to BufferType.EDITABLE if it was
2219     * not already editable.
2220     */
2221    public void append(CharSequence text, int start, int end) {
2222        if (!(mText instanceof Editable)) {
2223            setText(mText, BufferType.EDITABLE);
2224        }
2225
2226        ((Editable) mText).append(text, start, end);
2227    }
2228
2229    private void updateTextColors() {
2230        boolean inval = false;
2231        int color = mTextColor.getColorForState(getDrawableState(), 0);
2232        if (color != mCurTextColor) {
2233            mCurTextColor = color;
2234            inval = true;
2235        }
2236        if (mLinkTextColor != null) {
2237            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
2238            if (color != mTextPaint.linkColor) {
2239                mTextPaint.linkColor = color;
2240                inval = true;
2241            }
2242        }
2243        if (mHintTextColor != null) {
2244            color = mHintTextColor.getColorForState(getDrawableState(), 0);
2245            if (color != mCurHintTextColor && mText.length() == 0) {
2246                mCurHintTextColor = color;
2247                inval = true;
2248            }
2249        }
2250        if (inval) {
2251            invalidate();
2252        }
2253    }
2254
2255    @Override
2256    protected void drawableStateChanged() {
2257        super.drawableStateChanged();
2258        if (mTextColor != null && mTextColor.isStateful()
2259                || (mHintTextColor != null && mHintTextColor.isStateful())
2260                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
2261            updateTextColors();
2262        }
2263
2264        final Drawables dr = mDrawables;
2265        if (dr != null) {
2266            int[] state = getDrawableState();
2267            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
2268                dr.mDrawableTop.setState(state);
2269            }
2270            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
2271                dr.mDrawableBottom.setState(state);
2272            }
2273            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
2274                dr.mDrawableLeft.setState(state);
2275            }
2276            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
2277                dr.mDrawableRight.setState(state);
2278            }
2279        }
2280    }
2281
2282    /**
2283     * User interface state that is stored by TextView for implementing
2284     * {@link View#onSaveInstanceState}.
2285     */
2286    public static class SavedState extends BaseSavedState {
2287        int selStart;
2288        int selEnd;
2289        CharSequence text;
2290        boolean frozenWithFocus;
2291        CharSequence error;
2292
2293        SavedState(Parcelable superState) {
2294            super(superState);
2295        }
2296
2297        @Override
2298        public void writeToParcel(Parcel out, int flags) {
2299            super.writeToParcel(out, flags);
2300            out.writeInt(selStart);
2301            out.writeInt(selEnd);
2302            out.writeInt(frozenWithFocus ? 1 : 0);
2303            TextUtils.writeToParcel(text, out, flags);
2304
2305            if (error == null) {
2306                out.writeInt(0);
2307            } else {
2308                out.writeInt(1);
2309                TextUtils.writeToParcel(error, out, flags);
2310            }
2311        }
2312
2313        @Override
2314        public String toString() {
2315            String str = "TextView.SavedState{"
2316                    + Integer.toHexString(System.identityHashCode(this))
2317                    + " start=" + selStart + " end=" + selEnd;
2318            if (text != null) {
2319                str += " text=" + text;
2320            }
2321            return str + "}";
2322        }
2323
2324        public static final Parcelable.Creator<SavedState> CREATOR
2325                = new Parcelable.Creator<SavedState>() {
2326            public SavedState createFromParcel(Parcel in) {
2327                return new SavedState(in);
2328            }
2329
2330            public SavedState[] newArray(int size) {
2331                return new SavedState[size];
2332            }
2333        };
2334
2335        private SavedState(Parcel in) {
2336            super(in);
2337            selStart = in.readInt();
2338            selEnd = in.readInt();
2339            frozenWithFocus = (in.readInt() != 0);
2340            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2341
2342            if (in.readInt() != 0) {
2343                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2344            }
2345        }
2346    }
2347
2348    @Override
2349    public Parcelable onSaveInstanceState() {
2350        Parcelable superState = super.onSaveInstanceState();
2351
2352        // Save state if we are forced to
2353        boolean save = mFreezesText;
2354        int start = 0;
2355        int end = 0;
2356
2357        if (mText != null) {
2358            start = Selection.getSelectionStart(mText);
2359            end = Selection.getSelectionEnd(mText);
2360            if (start >= 0 || end >= 0) {
2361                // Or save state if there is a selection
2362                save = true;
2363            }
2364        }
2365
2366        if (save) {
2367            SavedState ss = new SavedState(superState);
2368            // XXX Should also save the current scroll position!
2369            ss.selStart = start;
2370            ss.selEnd = end;
2371
2372            if (mText instanceof Spanned) {
2373                /*
2374                 * Calling setText() strips off any ChangeWatchers;
2375                 * strip them now to avoid leaking references.
2376                 * But do it to a copy so that if there are any
2377                 * further changes to the text of this view, it
2378                 * won't get into an inconsistent state.
2379                 */
2380
2381                Spannable sp = new SpannableString(mText);
2382
2383                for (ChangeWatcher cw :
2384                     sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
2385                    sp.removeSpan(cw);
2386                }
2387
2388                ss.text = sp;
2389            } else {
2390                ss.text = mText.toString();
2391            }
2392
2393            if (isFocused() && start >= 0 && end >= 0) {
2394                ss.frozenWithFocus = true;
2395            }
2396
2397            ss.error = mError;
2398
2399            return ss;
2400        }
2401
2402        return superState;
2403    }
2404
2405    @Override
2406    public void onRestoreInstanceState(Parcelable state) {
2407        if (!(state instanceof SavedState)) {
2408            super.onRestoreInstanceState(state);
2409            return;
2410        }
2411
2412        SavedState ss = (SavedState)state;
2413        super.onRestoreInstanceState(ss.getSuperState());
2414
2415        // XXX restore buffer type too, as well as lots of other stuff
2416        if (ss.text != null) {
2417            setText(ss.text);
2418        }
2419
2420        if (ss.selStart >= 0 && ss.selEnd >= 0) {
2421            if (mText instanceof Spannable) {
2422                int len = mText.length();
2423
2424                if (ss.selStart > len || ss.selEnd > len) {
2425                    String restored = "";
2426
2427                    if (ss.text != null) {
2428                        restored = "(restored) ";
2429                    }
2430
2431                    Log.e("TextView", "Saved cursor position " + ss.selStart +
2432                          "/" + ss.selEnd + " out of range for " + restored +
2433                          "text " + mText);
2434                } else {
2435                    Selection.setSelection((Spannable) mText, ss.selStart,
2436                                           ss.selEnd);
2437
2438                    if (ss.frozenWithFocus) {
2439                        mFrozenWithFocus = true;
2440                    }
2441                }
2442            }
2443        }
2444
2445        if (ss.error != null) {
2446            setError(ss.error);
2447        }
2448    }
2449
2450    /**
2451     * Control whether this text view saves its entire text contents when
2452     * freezing to an icicle, in addition to dynamic state such as cursor
2453     * position.  By default this is false, not saving the text.  Set to true
2454     * if the text in the text view is not being saved somewhere else in
2455     * persistent storage (such as in a content provider) so that if the
2456     * view is later thawed the user will not lose their data.
2457     *
2458     * @param freezesText Controls whether a frozen icicle should include the
2459     * entire text data: true to include it, false to not.
2460     *
2461     * @attr ref android.R.styleable#TextView_freezesText
2462     */
2463    @android.view.RemotableViewMethod
2464    public void setFreezesText(boolean freezesText) {
2465        mFreezesText = freezesText;
2466    }
2467
2468    /**
2469     * Return whether this text view is including its entire text contents
2470     * in frozen icicles.
2471     *
2472     * @return Returns true if text is included, false if it isn't.
2473     *
2474     * @see #setFreezesText
2475     */
2476    public boolean getFreezesText() {
2477        return mFreezesText;
2478    }
2479
2480    ///////////////////////////////////////////////////////////////////////////
2481
2482    /**
2483     * Sets the Factory used to create new Editables.
2484     */
2485    public final void setEditableFactory(Editable.Factory factory) {
2486        mEditableFactory = factory;
2487        setText(mText);
2488    }
2489
2490    /**
2491     * Sets the Factory used to create new Spannables.
2492     */
2493    public final void setSpannableFactory(Spannable.Factory factory) {
2494        mSpannableFactory = factory;
2495        setText(mText);
2496    }
2497
2498    /**
2499     * Sets the string value of the TextView. TextView <em>does not</em> accept
2500     * HTML-like formatting, which you can do with text strings in XML resource files.
2501     * To style your strings, attach android.text.style.* objects to a
2502     * {@link android.text.SpannableString SpannableString}, or see the
2503     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
2504     * Available Resource Types</a> documentation for an example of setting
2505     * formatted text in the XML resource file.
2506     *
2507     * @attr ref android.R.styleable#TextView_text
2508     */
2509    @android.view.RemotableViewMethod
2510    public final void setText(CharSequence text) {
2511        setText(text, mBufferType);
2512    }
2513
2514    /**
2515     * Like {@link #setText(CharSequence)},
2516     * except that the cursor position (if any) is retained in the new text.
2517     *
2518     * @param text The new text to place in the text view.
2519     *
2520     * @see #setText(CharSequence)
2521     */
2522    @android.view.RemotableViewMethod
2523    public final void setTextKeepState(CharSequence text) {
2524        setTextKeepState(text, mBufferType);
2525    }
2526
2527    /**
2528     * Sets the text that this TextView is to display (see
2529     * {@link #setText(CharSequence)}) and also sets whether it is stored
2530     * in a styleable/spannable buffer and whether it is editable.
2531     *
2532     * @attr ref android.R.styleable#TextView_text
2533     * @attr ref android.R.styleable#TextView_bufferType
2534     */
2535    public void setText(CharSequence text, BufferType type) {
2536        setText(text, type, true, 0);
2537
2538        if (mCharWrapper != null) {
2539            mCharWrapper.mChars = null;
2540        }
2541    }
2542
2543    private void setText(CharSequence text, BufferType type,
2544                         boolean notifyBefore, int oldlen) {
2545        if (text == null) {
2546            text = "";
2547        }
2548
2549        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
2550
2551        if (text instanceof Spanned &&
2552            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
2553            setHorizontalFadingEdgeEnabled(true);
2554            setEllipsize(TextUtils.TruncateAt.MARQUEE);
2555        }
2556
2557        int n = mFilters.length;
2558        for (int i = 0; i < n; i++) {
2559            CharSequence out = mFilters[i].filter(text, 0, text.length(),
2560                                                  EMPTY_SPANNED, 0, 0);
2561            if (out != null) {
2562                text = out;
2563            }
2564        }
2565
2566        if (notifyBefore) {
2567            if (mText != null) {
2568                oldlen = mText.length();
2569                sendBeforeTextChanged(mText, 0, oldlen, text.length());
2570            } else {
2571                sendBeforeTextChanged("", 0, 0, text.length());
2572            }
2573        }
2574
2575        boolean needEditableForNotification = false;
2576
2577        if (mListeners != null && mListeners.size() != 0) {
2578            needEditableForNotification = true;
2579        }
2580
2581        if (type == BufferType.EDITABLE || mInput != null ||
2582            needEditableForNotification) {
2583            Editable t = mEditableFactory.newEditable(text);
2584            text = t;
2585            setFilters(t, mFilters);
2586            InputMethodManager imm = InputMethodManager.peekInstance();
2587            if (imm != null) imm.restartInput(this);
2588        } else if (type == BufferType.SPANNABLE || mMovement != null) {
2589            text = mSpannableFactory.newSpannable(text);
2590        } else if (!(text instanceof CharWrapper)) {
2591            text = TextUtils.stringOrSpannedString(text);
2592        }
2593
2594        if (mAutoLinkMask != 0) {
2595            Spannable s2;
2596
2597            if (type == BufferType.EDITABLE || text instanceof Spannable) {
2598                s2 = (Spannable) text;
2599            } else {
2600                s2 = mSpannableFactory.newSpannable(text);
2601            }
2602
2603            if (Linkify.addLinks(s2, mAutoLinkMask)) {
2604                text = s2;
2605                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
2606
2607                /*
2608                 * We must go ahead and set the text before changing the
2609                 * movement method, because setMovementMethod() may call
2610                 * setText() again to try to upgrade the buffer type.
2611                 */
2612                mText = text;
2613
2614                if (mLinksClickable) {
2615                    setMovementMethod(LinkMovementMethod.getInstance());
2616                }
2617            }
2618        }
2619
2620        mBufferType = type;
2621        mText = text;
2622
2623        if (mTransformation == null)
2624            mTransformed = text;
2625        else
2626            mTransformed = mTransformation.getTransformation(text, this);
2627
2628        final int textLength = text.length();
2629
2630        if (text instanceof Spannable) {
2631            Spannable sp = (Spannable) text;
2632
2633            // Remove any ChangeWatchers that might have come
2634            // from other TextViews.
2635            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
2636            final int count = watchers.length;
2637            for (int i = 0; i < count; i++)
2638                sp.removeSpan(watchers[i]);
2639
2640            if (mChangeWatcher == null)
2641                mChangeWatcher = new ChangeWatcher();
2642
2643            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
2644                       (PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
2645
2646            if (mInput != null) {
2647                sp.setSpan(mInput, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2648            }
2649
2650            if (mTransformation != null) {
2651                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2652
2653            }
2654
2655            if (mMovement != null) {
2656                mMovement.initialize(this, (Spannable) text);
2657
2658                /*
2659                 * Initializing the movement method will have set the
2660                 * selection, so reset mSelectionMoved to keep that from
2661                 * interfering with the normal on-focus selection-setting.
2662                 */
2663                mSelectionMoved = false;
2664            }
2665        }
2666
2667        if (mLayout != null) {
2668            checkForRelayout();
2669        }
2670
2671        sendOnTextChanged(text, 0, oldlen, textLength);
2672        onTextChanged(text, 0, oldlen, textLength);
2673
2674        if (needEditableForNotification) {
2675            sendAfterTextChanged((Editable) text);
2676        }
2677    }
2678
2679    /**
2680     * Sets the TextView to display the specified slice of the specified
2681     * char array.  You must promise that you will not change the contents
2682     * of the array except for right before another call to setText(),
2683     * since the TextView has no way to know that the text
2684     * has changed and that it needs to invalidate and re-layout.
2685     */
2686    public final void setText(char[] text, int start, int len) {
2687        int oldlen = 0;
2688
2689        if (start < 0 || len < 0 || start + len > text.length) {
2690            throw new IndexOutOfBoundsException(start + ", " + len);
2691        }
2692
2693        /*
2694         * We must do the before-notification here ourselves because if
2695         * the old text is a CharWrapper we destroy it before calling
2696         * into the normal path.
2697         */
2698        if (mText != null) {
2699            oldlen = mText.length();
2700            sendBeforeTextChanged(mText, 0, oldlen, len);
2701        } else {
2702            sendBeforeTextChanged("", 0, 0, len);
2703        }
2704
2705        if (mCharWrapper == null) {
2706            mCharWrapper = new CharWrapper(text, start, len);
2707        } else {
2708            mCharWrapper.set(text, start, len);
2709        }
2710
2711        setText(mCharWrapper, mBufferType, false, oldlen);
2712    }
2713
2714    private static class CharWrapper
2715            implements CharSequence, GetChars, GraphicsOperations {
2716        private char[] mChars;
2717        private int mStart, mLength;
2718
2719        public CharWrapper(char[] chars, int start, int len) {
2720            mChars = chars;
2721            mStart = start;
2722            mLength = len;
2723        }
2724
2725        /* package */ void set(char[] chars, int start, int len) {
2726            mChars = chars;
2727            mStart = start;
2728            mLength = len;
2729        }
2730
2731        public int length() {
2732            return mLength;
2733        }
2734
2735        public char charAt(int off) {
2736            return mChars[off + mStart];
2737        }
2738
2739        public String toString() {
2740            return new String(mChars, mStart, mLength);
2741        }
2742
2743        public CharSequence subSequence(int start, int end) {
2744            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2745                throw new IndexOutOfBoundsException(start + ", " + end);
2746            }
2747
2748            return new String(mChars, start + mStart, end - start);
2749        }
2750
2751        public void getChars(int start, int end, char[] buf, int off) {
2752            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2753                throw new IndexOutOfBoundsException(start + ", " + end);
2754            }
2755
2756            System.arraycopy(mChars, start + mStart, buf, off, end - start);
2757        }
2758
2759        public void drawText(Canvas c, int start, int end,
2760                             float x, float y, Paint p) {
2761            c.drawText(mChars, start + mStart, end - start, x, y, p);
2762        }
2763
2764        public float measureText(int start, int end, Paint p) {
2765            return p.measureText(mChars, start + mStart, end - start);
2766        }
2767
2768        public int getTextWidths(int start, int end, float[] widths, Paint p) {
2769            return p.getTextWidths(mChars, start + mStart, end - start, widths);
2770        }
2771    }
2772
2773    /**
2774     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
2775     * except that the cursor position (if any) is retained in the new text.
2776     *
2777     * @see #setText(CharSequence, android.widget.TextView.BufferType)
2778     */
2779    public final void setTextKeepState(CharSequence text, BufferType type) {
2780        int start = getSelectionStart();
2781        int end = getSelectionEnd();
2782        int len = text.length();
2783
2784        setText(text, type);
2785
2786        if (start >= 0 || end >= 0) {
2787            if (mText instanceof Spannable) {
2788                Selection.setSelection((Spannable) mText,
2789                                       Math.max(0, Math.min(start, len)),
2790                                       Math.max(0, Math.min(end, len)));
2791            }
2792        }
2793    }
2794
2795    @android.view.RemotableViewMethod
2796    public final void setText(int resid) {
2797        setText(getContext().getResources().getText(resid));
2798    }
2799
2800    public final void setText(int resid, BufferType type) {
2801        setText(getContext().getResources().getText(resid), type);
2802    }
2803
2804    /**
2805     * Sets the text to be displayed when the text of the TextView is empty.
2806     * Null means to use the normal empty text. The hint does not currently
2807     * participate in determining the size of the view.
2808     *
2809     * This method is deprecated. Use {link #setHint(int, String)} or
2810     * {link #setHint(CharSequence, String)} instead.
2811     *
2812     * @attr ref android.R.styleable#TextView_hint
2813     */
2814    @android.view.RemotableViewMethod
2815    public final void setHint(CharSequence hint) {
2816        mHint = TextUtils.stringOrSpannedString(hint);
2817
2818        if (mLayout != null) {
2819            checkForRelayout();
2820        }
2821
2822        if (mText.length() == 0) {
2823            invalidate();
2824        }
2825    }
2826
2827    /**
2828     * Sets the text to be displayed when the text of the TextView is empty,
2829     * from a resource.
2830     *
2831     * This method is deprecated. Use {link #setHint(int, String)} or
2832     * {link #setHint(CharSequence, String)} instead.
2833     *
2834     * @attr ref android.R.styleable#TextView_hint
2835     */
2836    @android.view.RemotableViewMethod
2837    public final void setHint(int resid) {
2838        setHint(getContext().getResources().getText(resid));
2839    }
2840
2841    /**
2842     * Returns the hint that is displayed when the text of the TextView
2843     * is empty.
2844     *
2845     * @attr ref android.R.styleable#TextView_hint
2846     */
2847    @ViewDebug.CapturedViewProperty
2848    public CharSequence getHint() {
2849        return mHint;
2850    }
2851
2852    /**
2853     * Set the type of the content with a constant as defined for
2854     * {@link EditorInfo#inputType}.  This will take care of changing
2855     * the key listener, by calling {@link #setKeyListener(KeyListener)}, to
2856     * match the given content type.  If the given content type is
2857     * {@link EditorInfo#TYPE_NULL} then a soft keyboard will
2858     * not be displayed for this text view.
2859     *
2860     * @see #getInputType()
2861     * @see #setRawInputType(int)
2862     * @see android.text.InputType
2863     * @attr ref android.R.styleable#TextView_inputType
2864     */
2865    public void setInputType(int type) {
2866        setInputType(type, false);
2867        final int variation = type&(EditorInfo.TYPE_MASK_CLASS
2868                |EditorInfo.TYPE_MASK_VARIATION);
2869        final boolean isPassword = variation
2870                == (EditorInfo.TYPE_CLASS_TEXT
2871                        |EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
2872        boolean forceUpdate = false;
2873        if (isPassword) {
2874            setTransformationMethod(PasswordTransformationMethod.getInstance());
2875            setTypefaceByIndex(MONOSPACE, 0);
2876        } else if (mTransformation == PasswordTransformationMethod.getInstance()) {
2877            // We need to clean up if we were previously in password mode.
2878            if (variation != (EditorInfo.TYPE_CLASS_TEXT
2879                        |EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD)) {
2880                setTypefaceByIndex(-1, -1);
2881            }
2882            forceUpdate = true;
2883        } else if (variation == (EditorInfo.TYPE_CLASS_TEXT
2884                        |EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD)) {
2885            setTypefaceByIndex(MONOSPACE, 0);
2886        }
2887
2888        boolean multiLine = (type&(EditorInfo.TYPE_MASK_CLASS
2889                        | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
2890                (EditorInfo.TYPE_CLASS_TEXT
2891                        | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
2892
2893        // We need to update the single line mode if it has changed or we
2894        // were previously in password mode.
2895        if (mSingleLine == multiLine || forceUpdate) {
2896            // Change single line mode, but only change the transformation if
2897            // we are not in password mode.
2898            applySingleLine(!multiLine, !isPassword);
2899        }
2900
2901        InputMethodManager imm = InputMethodManager.peekInstance();
2902        if (imm != null) imm.restartInput(this);
2903    }
2904
2905    /**
2906     * Directly change the content type integer of the text view, without
2907     * modifying any other state.
2908     * @see #setInputType(int)
2909     * @see android.text.InputType
2910     * @attr ref android.R.styleable#TextView_inputType
2911     */
2912    public void setRawInputType(int type) {
2913        mInputType = type;
2914    }
2915
2916    private void setInputType(int type, boolean direct) {
2917        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
2918        KeyListener input;
2919        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
2920            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT)
2921                    != 0;
2922            TextKeyListener.Capitalize cap;
2923            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
2924                cap = TextKeyListener.Capitalize.CHARACTERS;
2925            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
2926                cap = TextKeyListener.Capitalize.WORDS;
2927            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
2928                cap = TextKeyListener.Capitalize.SENTENCES;
2929            } else {
2930                cap = TextKeyListener.Capitalize.NONE;
2931            }
2932            input = TextKeyListener.getInstance(autotext, cap);
2933        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
2934            input = DigitsKeyListener.getInstance(
2935                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
2936                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
2937        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
2938            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
2939                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
2940                    input = DateKeyListener.getInstance();
2941                    break;
2942                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
2943                    input = TimeKeyListener.getInstance();
2944                    break;
2945                default:
2946                    input = DateTimeKeyListener.getInstance();
2947                    break;
2948            }
2949        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
2950            input = DialerKeyListener.getInstance();
2951        } else {
2952            input = TextKeyListener.getInstance();
2953        }
2954        mInputType = type;
2955        if (direct) mInput = input;
2956        else {
2957            setKeyListenerOnly(input);
2958        }
2959    }
2960
2961    /**
2962     * Get the type of the content.
2963     *
2964     * @see #setInputType(int)
2965     * @see android.text.InputType
2966     */
2967    public int getInputType() {
2968        return mInputType;
2969    }
2970
2971    /**
2972     * Change the editor type integer associated with the text view, which
2973     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
2974     * has focus.
2975     * @see #getImeOptions
2976     * @see android.view.inputmethod.EditorInfo
2977     * @attr ref android.R.styleable#TextView_imeOptions
2978     */
2979    public void setImeOptions(int imeOptions) {
2980        if (mInputContentType == null) {
2981            mInputContentType = new InputContentType();
2982        }
2983        mInputContentType.imeOptions = imeOptions;
2984    }
2985
2986    /**
2987     * Get the type of the IME editor.
2988     *
2989     * @see #setImeOptions(int)
2990     * @see android.view.inputmethod.EditorInfo
2991     */
2992    public int getImeOptions() {
2993        return mInputContentType != null
2994                ? mInputContentType.imeOptions : EditorInfo.IME_NULL;
2995    }
2996
2997    /**
2998     * Change the custom IME action associated with the text view, which
2999     * will be reported to an IME with {@link EditorInfo#actionLabel}
3000     * and {@link EditorInfo#actionId} when it has focus.
3001     * @see #getImeActionLabel
3002     * @see #getImeActionId
3003     * @see android.view.inputmethod.EditorInfo
3004     * @attr ref android.R.styleable#TextView_imeActionLabel
3005     * @attr ref android.R.styleable#TextView_imeActionId
3006     */
3007    public void setImeActionLabel(CharSequence label, int actionId) {
3008        if (mInputContentType == null) {
3009            mInputContentType = new InputContentType();
3010        }
3011        mInputContentType.imeActionLabel = label;
3012        mInputContentType.imeActionId = actionId;
3013    }
3014
3015    /**
3016     * Get the IME action label previous set with {@link #setImeActionLabel}.
3017     *
3018     * @see #setImeActionLabel
3019     * @see android.view.inputmethod.EditorInfo
3020     */
3021    public CharSequence getImeActionLabel() {
3022        return mInputContentType != null
3023                ? mInputContentType.imeActionLabel : null;
3024    }
3025
3026    /**
3027     * Get the IME action ID previous set with {@link #setImeActionLabel}.
3028     *
3029     * @see #setImeActionLabel
3030     * @see android.view.inputmethod.EditorInfo
3031     */
3032    public int getImeActionId() {
3033        return mInputContentType != null
3034                ? mInputContentType.imeActionId : 0;
3035    }
3036
3037    /**
3038     * Set a special listener to be called when an action is performed
3039     * on the text view.  This will be called when the enter key is pressed,
3040     * or when an action supplied to the IME is selected by the user.  Setting
3041     * this means that the normal hard key event will not insert a newline
3042     * into the text view, even if it is multi-line; holding down the ALT
3043     * modifier will, however, allow the user to insert a newline character.
3044     */
3045    public void setOnEditorActionListener(OnEditorActionListener l) {
3046        if (mInputContentType == null) {
3047            mInputContentType = new InputContentType();
3048        }
3049        mInputContentType.onEditorActionListener = l;
3050    }
3051
3052    /**
3053     * Called when an attached input method calls
3054     * {@link InputConnection#performEditorAction(int)
3055     * InputConnection.performEditorAction()}
3056     * for this text view.  The default implementation will call your action
3057     * listener supplied to {@link #setOnEditorActionListener}, or perform
3058     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
3059     * EditorInfo.IME_ACTION_NEXT} or {@link EditorInfo#IME_ACTION_DONE
3060     * EditorInfo.IME_ACTION_DONE}.
3061     *
3062     * <p>For backwards compatibility, if no IME options have been set and the
3063     * text view would not normally advance focus on enter, then
3064     * the NEXT and DONE actions received here will be turned into an enter
3065     * key down/up pair to go through the normal key handling.
3066     *
3067     * @param actionCode The code of the action being performed.
3068     *
3069     * @see #setOnEditorActionListener
3070     */
3071    public void onEditorAction(int actionCode) {
3072        final InputContentType ict = mInputContentType;
3073        if (ict != null) {
3074            if (ict.onEditorActionListener != null) {
3075                if (ict.onEditorActionListener.onEditorAction(this,
3076                        actionCode, null)) {
3077                    return;
3078                }
3079            }
3080
3081            // This is the handling for some default action.
3082            // Note that for backwards compatibility we don't do this
3083            // default handling if explicit ime options have not been given,
3084            // instead turning this into the normal enter key codes that an
3085            // app may be expecting.
3086            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
3087                View v = focusSearch(FOCUS_DOWN);
3088                if (v != null) {
3089                    if (!v.requestFocus(FOCUS_DOWN)) {
3090                        throw new IllegalStateException("focus search returned a view " +
3091                                "that wasn't able to take focus!");
3092                    }
3093                }
3094                return;
3095
3096            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
3097                InputMethodManager imm = InputMethodManager.peekInstance();
3098                if (imm != null) {
3099                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
3100                }
3101                return;
3102            }
3103        }
3104
3105        Handler h = getHandler();
3106        if (h != null) {
3107            long eventTime = SystemClock.uptimeMillis();
3108            h.sendMessage(h.obtainMessage(ViewRoot.DISPATCH_KEY_FROM_IME,
3109                    new KeyEvent(eventTime, eventTime,
3110                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0, 0, 0,
3111                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3112                    | KeyEvent.FLAG_EDITOR_ACTION)));
3113            h.sendMessage(h.obtainMessage(ViewRoot.DISPATCH_KEY_FROM_IME,
3114                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
3115                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0, 0, 0,
3116                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3117                    | KeyEvent.FLAG_EDITOR_ACTION)));
3118        }
3119    }
3120
3121    /**
3122     * Set the private content type of the text, which is the
3123     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
3124     * field that will be filled in when creating an input connection.
3125     *
3126     * @see #getPrivateImeOptions()
3127     * @see EditorInfo#privateImeOptions
3128     * @attr ref android.R.styleable#TextView_privateImeOptions
3129     */
3130    public void setPrivateImeOptions(String type) {
3131        if (mInputContentType == null) mInputContentType = new InputContentType();
3132        mInputContentType.privateImeOptions = type;
3133    }
3134
3135    /**
3136     * Get the private type of the content.
3137     *
3138     * @see #setPrivateImeOptions(String)
3139     * @see EditorInfo#privateImeOptions
3140     */
3141    public String getPrivateImeOptions() {
3142        return mInputContentType != null
3143                ? mInputContentType.privateImeOptions : null;
3144    }
3145
3146    /**
3147     * Set the extra input data of the text, which is the
3148     * {@link EditorInfo#extras TextBoxAttribute.extras}
3149     * Bundle that will be filled in when creating an input connection.  The
3150     * given integer is the resource ID of an XML resource holding an
3151     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
3152     *
3153     * @see #getInputExtras(boolean)
3154     * @see EditorInfo#extras
3155     * @attr ref android.R.styleable#TextView_editorExtras
3156     */
3157    public void setInputExtras(int xmlResId)
3158            throws XmlPullParserException, IOException {
3159        XmlResourceParser parser = getResources().getXml(xmlResId);
3160        if (mInputContentType == null) mInputContentType = new InputContentType();
3161        mInputContentType.extras = new Bundle();
3162        getResources().parseBundleExtras(parser, mInputContentType.extras);
3163    }
3164
3165    /**
3166     * Retrieve the input extras currently associated with the text view, which
3167     * can be viewed as well as modified.
3168     *
3169     * @param create If true, the extras will be created if they don't already
3170     * exist.  Otherwise, null will be returned if none have been created.
3171     * @see #setInputExtras(int)View
3172     * @see EditorInfo#extras
3173     * @attr ref android.R.styleable#TextView_editorExtras
3174     */
3175    public Bundle getInputExtras(boolean create) {
3176        if (mInputContentType == null) {
3177            if (!create) return null;
3178            mInputContentType = new InputContentType();
3179        }
3180        if (mInputContentType.extras == null) {
3181            if (!create) return null;
3182            mInputContentType.extras = new Bundle();
3183        }
3184        return mInputContentType.extras;
3185    }
3186
3187    /**
3188     * Returns the error message that was set to be displayed with
3189     * {@link #setError}, or <code>null</code> if no error was set
3190     * or if it the error was cleared by the widget after user input.
3191     */
3192    public CharSequence getError() {
3193        return mError;
3194    }
3195
3196    /**
3197     * Sets the right-hand compound drawable of the TextView to the "error"
3198     * icon and sets an error message that will be displayed in a popup when
3199     * the TextView has focus.  The icon and error message will be reset to
3200     * null when any key events cause changes to the TextView's text.  If the
3201     * <code>error</code> is <code>null</code>, the error message and icon
3202     * will be cleared.
3203     */
3204    @android.view.RemotableViewMethod
3205    public void setError(CharSequence error) {
3206        if (error == null) {
3207            setError(null, null);
3208        } else {
3209            Drawable dr = getContext().getResources().
3210                getDrawable(com.android.internal.R.drawable.
3211                            indicator_input_error);
3212
3213            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
3214            setError(error, dr);
3215        }
3216    }
3217
3218    /**
3219     * Sets the right-hand compound drawable of the TextView to the specified
3220     * icon and sets an error message that will be displayed in a popup when
3221     * the TextView has focus.  The icon and error message will be reset to
3222     * null when any key events cause changes to the TextView's text.  The
3223     * drawable must already have had {@link Drawable#setBounds} set on it.
3224     * If the <code>error</code> is <code>null</code>, the error message will
3225     * be cleared (and you should provide a <code>null</code> icon as well).
3226     */
3227    public void setError(CharSequence error, Drawable icon) {
3228        error = TextUtils.stringOrSpannedString(error);
3229
3230        mError = error;
3231        mErrorWasChanged = true;
3232        final Drawables dr = mDrawables;
3233        if (dr != null) {
3234            setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop,
3235                                 icon, dr.mDrawableBottom);
3236        } else {
3237            setCompoundDrawables(null, null, icon, null);
3238        }
3239
3240        if (error == null) {
3241            if (mPopup != null) {
3242                if (mPopup.isShowing()) {
3243                    mPopup.dismiss();
3244                }
3245
3246                mPopup = null;
3247            }
3248        } else {
3249            if (isFocused()) {
3250                showError();
3251            }
3252        }
3253    }
3254
3255    private void showError() {
3256        if (getWindowToken() == null) {
3257            mShowErrorAfterAttach = true;
3258            return;
3259        }
3260
3261        if (mPopup == null) {
3262            LayoutInflater inflater = LayoutInflater.from(getContext());
3263            final TextView err = (TextView) inflater.inflate(com.android.internal.R.layout.textview_hint,
3264                    null);
3265
3266            mPopup = new ErrorPopup(err, 200, 50);
3267            mPopup.setFocusable(false);
3268            // The user is entering text, so the input method is needed.  We
3269            // don't want the popup to be displayed on top of it.
3270            mPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED);
3271        }
3272
3273        TextView tv = (TextView) mPopup.getContentView();
3274        chooseSize(mPopup, mError, tv);
3275        tv.setText(mError);
3276
3277        mPopup.showAsDropDown(this, getErrorX(), getErrorY());
3278        mPopup.fixDirection(mPopup.isAboveAnchor());
3279    }
3280
3281    private static class ErrorPopup extends PopupWindow {
3282        private boolean mAbove = false;
3283        private TextView mView;
3284
3285        ErrorPopup(TextView v, int width, int height) {
3286            super(v, width, height);
3287            mView = v;
3288        }
3289
3290        void fixDirection(boolean above) {
3291            mAbove = above;
3292
3293            if (above) {
3294                mView.setBackgroundResource(com.android.internal.R.drawable.popup_inline_error_above);
3295            } else {
3296                mView.setBackgroundResource(com.android.internal.R.drawable.popup_inline_error);
3297            }
3298        }
3299
3300        @Override
3301        public void update(int x, int y, int w, int h, boolean force) {
3302            super.update(x, y, w, h, force);
3303
3304            boolean above = isAboveAnchor();
3305            if (above != mAbove) {
3306                fixDirection(above);
3307            }
3308        }
3309    }
3310
3311    /**
3312     * Returns the Y offset to make the pointy top of the error point
3313     * at the middle of the error icon.
3314     */
3315    private int getErrorX() {
3316        /*
3317         * The "25" is the distance between the point and the right edge
3318         * of the background
3319         */
3320
3321        final Drawables dr = mDrawables;
3322        return getWidth() - mPopup.getWidth()
3323                - getPaddingRight()
3324                - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + 25;
3325    }
3326
3327    /**
3328     * Returns the Y offset to make the pointy top of the error point
3329     * at the bottom of the error icon.
3330     */
3331    private int getErrorY() {
3332        /*
3333         * Compound, not extended, because the icon is not clipped
3334         * if the text height is smaller.
3335         */
3336        int vspace = mBottom - mTop -
3337                     getCompoundPaddingBottom() - getCompoundPaddingTop();
3338
3339        final Drawables dr = mDrawables;
3340        int icontop = getCompoundPaddingTop()
3341                + (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2;
3342
3343        /*
3344         * The "2" is the distance between the point and the top edge
3345         * of the background.
3346         */
3347
3348        return icontop + (dr != null ? dr.mDrawableHeightRight : 0)
3349                - getHeight() - 2;
3350    }
3351
3352    private void hideError() {
3353        if (mPopup != null) {
3354            if (mPopup.isShowing()) {
3355                mPopup.dismiss();
3356            }
3357        }
3358
3359        mShowErrorAfterAttach = false;
3360    }
3361
3362    private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) {
3363        int wid = tv.getPaddingLeft() + tv.getPaddingRight();
3364        int ht = tv.getPaddingTop() + tv.getPaddingBottom();
3365
3366        /*
3367         * Figure out how big the text would be if we laid it out to the
3368         * full width of this view minus the border.
3369         */
3370        int cap = getWidth() - wid;
3371        if (cap < 0) {
3372            cap = 200; // We must not be measured yet -- setFrame() will fix it.
3373        }
3374
3375        Layout l = new StaticLayout(text, tv.getPaint(), cap,
3376                                    Layout.Alignment.ALIGN_NORMAL, 1, 0, true);
3377        float max = 0;
3378        for (int i = 0; i < l.getLineCount(); i++) {
3379            max = Math.max(max, l.getLineWidth(i));
3380        }
3381
3382        /*
3383         * Now set the popup size to be big enough for the text plus the border.
3384         */
3385        pop.setWidth(wid + (int) Math.ceil(max));
3386        pop.setHeight(ht + l.getHeight());
3387    }
3388
3389
3390    @Override
3391    protected boolean setFrame(int l, int t, int r, int b) {
3392        boolean result = super.setFrame(l, t, r, b);
3393
3394        if (mPopup != null) {
3395            TextView tv = (TextView) mPopup.getContentView();
3396            chooseSize(mPopup, mError, tv);
3397            mPopup.update(this, getErrorX(), getErrorY(), -1, -1);
3398        }
3399
3400        restartMarqueeIfNeeded();
3401
3402        return result;
3403    }
3404
3405    private void restartMarqueeIfNeeded() {
3406        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3407            mRestartMarquee = false;
3408            startMarquee();
3409        }
3410    }
3411
3412    /**
3413     * Sets the list of input filters that will be used if the buffer is
3414     * Editable.  Has no effect otherwise.
3415     *
3416     * @attr ref android.R.styleable#TextView_maxLength
3417     */
3418    public void setFilters(InputFilter[] filters) {
3419        if (filters == null) {
3420            throw new IllegalArgumentException();
3421        }
3422
3423        mFilters = filters;
3424
3425        if (mText instanceof Editable) {
3426            setFilters((Editable) mText, filters);
3427        }
3428    }
3429
3430    /**
3431     * Sets the list of input filters on the specified Editable,
3432     * and includes mInput in the list if it is an InputFilter.
3433     */
3434    private void setFilters(Editable e, InputFilter[] filters) {
3435        if (mInput instanceof InputFilter) {
3436            InputFilter[] nf = new InputFilter[filters.length + 1];
3437
3438            System.arraycopy(filters, 0, nf, 0, filters.length);
3439            nf[filters.length] = (InputFilter) mInput;
3440
3441            e.setFilters(nf);
3442        } else {
3443            e.setFilters(filters);
3444        }
3445    }
3446
3447    /**
3448     * Returns the current list of input filters.
3449     */
3450    public InputFilter[] getFilters() {
3451        return mFilters;
3452    }
3453
3454    /////////////////////////////////////////////////////////////////////////
3455
3456    private int getVerticalOffset(boolean forceNormal) {
3457        int voffset = 0;
3458        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3459
3460        Layout l = mLayout;
3461        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3462            l = mHintLayout;
3463        }
3464
3465        if (gravity != Gravity.TOP) {
3466            int boxht;
3467
3468            if (l == mHintLayout) {
3469                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3470                        getCompoundPaddingBottom();
3471            } else {
3472                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3473                        getExtendedPaddingBottom();
3474            }
3475            int textht = l.getHeight();
3476
3477            if (textht < boxht) {
3478                if (gravity == Gravity.BOTTOM)
3479                    voffset = boxht - textht;
3480                else // (gravity == Gravity.CENTER_VERTICAL)
3481                    voffset = (boxht - textht) >> 1;
3482            }
3483        }
3484        return voffset;
3485    }
3486
3487    private int getBottomVerticalOffset(boolean forceNormal) {
3488        int voffset = 0;
3489        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3490
3491        Layout l = mLayout;
3492        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3493            l = mHintLayout;
3494        }
3495
3496        if (gravity != Gravity.BOTTOM) {
3497            int boxht;
3498
3499            if (l == mHintLayout) {
3500                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3501                        getCompoundPaddingBottom();
3502            } else {
3503                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3504                        getExtendedPaddingBottom();
3505            }
3506            int textht = l.getHeight();
3507
3508            if (textht < boxht) {
3509                if (gravity == Gravity.TOP)
3510                    voffset = boxht - textht;
3511                else // (gravity == Gravity.CENTER_VERTICAL)
3512                    voffset = (boxht - textht) >> 1;
3513            }
3514        }
3515        return voffset;
3516    }
3517
3518    private void invalidateCursorPath() {
3519        if (mHighlightPathBogus) {
3520            invalidateCursor();
3521        } else {
3522            synchronized (sTempRect) {
3523                /*
3524                 * The reason for this concern about the thickness of the
3525                 * cursor and doing the floor/ceil on the coordinates is that
3526                 * some EditTexts (notably textfields in the Browser) have
3527                 * anti-aliased text where not all the characters are
3528                 * necessarily at integer-multiple locations.  This should
3529                 * make sure the entire cursor gets invalidated instead of
3530                 * sometimes missing half a pixel.
3531                 */
3532
3533                float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
3534                if (thick < 1.0f) {
3535                    thick = 1.0f;
3536                }
3537
3538                thick /= 2;
3539
3540                mHighlightPath.computeBounds(sTempRect, false);
3541
3542                int left = getCompoundPaddingLeft();
3543                int top = getExtendedPaddingTop() + getVerticalOffset(true);
3544
3545                invalidate((int) FloatMath.floor(left + sTempRect.left - thick),
3546                           (int) FloatMath.floor(top + sTempRect.top - thick),
3547                           (int) FloatMath.ceil(left + sTempRect.right + thick),
3548                           (int) FloatMath.ceil(top + sTempRect.bottom + thick));
3549            }
3550        }
3551    }
3552
3553    private void invalidateCursor() {
3554        int where = Selection.getSelectionEnd(mText);
3555
3556        invalidateCursor(where, where, where);
3557    }
3558
3559    private void invalidateCursor(int a, int b, int c) {
3560        if (mLayout == null) {
3561            invalidate();
3562        } else {
3563            if (a >= 0 || b >= 0 || c >= 0) {
3564                int first = Math.min(Math.min(a, b), c);
3565                int last = Math.max(Math.max(a, b), c);
3566
3567                int line = mLayout.getLineForOffset(first);
3568                int top = mLayout.getLineTop(line);
3569
3570                // This is ridiculous, but the descent from the line above
3571                // can hang down into the line we really want to redraw,
3572                // so we have to invalidate part of the line above to make
3573                // sure everything that needs to be redrawn really is.
3574                // (But not the whole line above, because that would cause
3575                // the same problem with the descenders on the line above it!)
3576                if (line > 0) {
3577                    top -= mLayout.getLineDescent(line - 1);
3578                }
3579
3580                int line2;
3581
3582                if (first == last)
3583                    line2 = line;
3584                else
3585                    line2 = mLayout.getLineForOffset(last);
3586
3587                int bottom = mLayout.getLineTop(line2 + 1);
3588                int voffset = getVerticalOffset(true);
3589
3590                int left = getCompoundPaddingLeft() + mScrollX;
3591                invalidate(left, top + voffset + getExtendedPaddingTop(),
3592                           left + getWidth() - getCompoundPaddingLeft() -
3593                           getCompoundPaddingRight(),
3594                           bottom + voffset + getExtendedPaddingTop());
3595            }
3596        }
3597    }
3598
3599    private void registerForPreDraw() {
3600        final ViewTreeObserver observer = getViewTreeObserver();
3601        if (observer == null) {
3602            return;
3603        }
3604
3605        if (mPreDrawState == PREDRAW_NOT_REGISTERED) {
3606            observer.addOnPreDrawListener(this);
3607            mPreDrawState = PREDRAW_PENDING;
3608        } else if (mPreDrawState == PREDRAW_DONE) {
3609            mPreDrawState = PREDRAW_PENDING;
3610        }
3611
3612        // else state is PREDRAW_PENDING, so keep waiting.
3613    }
3614
3615    /**
3616     * {@inheritDoc}
3617     */
3618    public boolean onPreDraw() {
3619        if (mPreDrawState != PREDRAW_PENDING) {
3620            return true;
3621        }
3622
3623        if (mLayout == null) {
3624            assumeLayout();
3625        }
3626
3627        boolean changed = false;
3628
3629        if (mMovement != null) {
3630            int curs = Selection.getSelectionEnd(mText);
3631
3632            /*
3633             * TODO: This should really only keep the end in view if
3634             * it already was before the text changed.  I'm not sure
3635             * of a good way to tell from here if it was.
3636             */
3637            if (curs < 0 &&
3638                  (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
3639                curs = mText.length();
3640            }
3641
3642            if (curs >= 0) {
3643                changed = bringPointIntoView(curs);
3644            }
3645        } else {
3646            changed = bringTextIntoView();
3647        }
3648
3649        mPreDrawState = PREDRAW_DONE;
3650        return !changed;
3651    }
3652
3653    @Override
3654    protected void onAttachedToWindow() {
3655        super.onAttachedToWindow();
3656
3657        mTemporaryDetach = false;
3658
3659        if (mShowErrorAfterAttach) {
3660            showError();
3661            mShowErrorAfterAttach = false;
3662        }
3663    }
3664
3665    @Override
3666    protected void onDetachedFromWindow() {
3667        super.onDetachedFromWindow();
3668
3669        if (mPreDrawState != PREDRAW_NOT_REGISTERED) {
3670            final ViewTreeObserver observer = getViewTreeObserver();
3671            if (observer != null) {
3672                observer.removeOnPreDrawListener(this);
3673                mPreDrawState = PREDRAW_NOT_REGISTERED;
3674            }
3675        }
3676
3677        if (mError != null) {
3678            hideError();
3679        }
3680    }
3681
3682    @Override
3683    protected boolean isPaddingOffsetRequired() {
3684        return mShadowRadius != 0;
3685    }
3686
3687    @Override
3688    protected int getLeftPaddingOffset() {
3689        return (int) Math.min(0, mShadowDx - mShadowRadius);
3690    }
3691
3692    @Override
3693    protected int getTopPaddingOffset() {
3694        return (int) Math.min(0, mShadowDy - mShadowRadius);
3695    }
3696
3697    @Override
3698    protected int getBottomPaddingOffset() {
3699        return (int) Math.max(0, mShadowDy + mShadowRadius);
3700    }
3701
3702    @Override
3703    protected int getRightPaddingOffset() {
3704        return (int) Math.max(0, mShadowDx + mShadowRadius);
3705    }
3706
3707    @Override
3708    protected boolean verifyDrawable(Drawable who) {
3709        final boolean verified = super.verifyDrawable(who);
3710        if (!verified && mDrawables != null) {
3711            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
3712                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom;
3713        }
3714        return verified;
3715    }
3716
3717    @Override
3718    public void invalidateDrawable(Drawable drawable) {
3719        if (verifyDrawable(drawable)) {
3720            final Rect dirty = drawable.getBounds();
3721            int scrollX = mScrollX;
3722            int scrollY = mScrollY;
3723
3724            // IMPORTANT: The coordinates below are based on the coordinates computed
3725            // for each compound drawable in onDraw(). Make sure to update each section
3726            // accordingly.
3727            final TextView.Drawables drawables = mDrawables;
3728            if (drawables != null) {
3729                if (drawable == drawables.mDrawableLeft) {
3730                    final int compoundPaddingTop = getCompoundPaddingTop();
3731                    final int compoundPaddingBottom = getCompoundPaddingBottom();
3732                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
3733
3734                    scrollX += mPaddingLeft;
3735                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
3736                } else if (drawable == drawables.mDrawableRight) {
3737                    final int compoundPaddingTop = getCompoundPaddingTop();
3738                    final int compoundPaddingBottom = getCompoundPaddingBottom();
3739                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
3740
3741                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
3742                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
3743                } else if (drawable == drawables.mDrawableTop) {
3744                    final int compoundPaddingLeft = getCompoundPaddingLeft();
3745                    final int compoundPaddingRight = getCompoundPaddingRight();
3746                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
3747
3748                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
3749                    scrollY += mPaddingTop;
3750                } else if (drawable == drawables.mDrawableBottom) {
3751                    final int compoundPaddingLeft = getCompoundPaddingLeft();
3752                    final int compoundPaddingRight = getCompoundPaddingRight();
3753                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
3754
3755                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
3756                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
3757                }
3758            }
3759
3760            invalidate(dirty.left + scrollX, dirty.top + scrollY,
3761                    dirty.right + scrollX, dirty.bottom + scrollY);
3762        }
3763    }
3764
3765    @Override
3766    protected void onDraw(Canvas canvas) {
3767        restartMarqueeIfNeeded();
3768
3769        // Draw the background for this view
3770        super.onDraw(canvas);
3771
3772        final int compoundPaddingLeft = getCompoundPaddingLeft();
3773        final int compoundPaddingTop = getCompoundPaddingTop();
3774        final int compoundPaddingRight = getCompoundPaddingRight();
3775        final int compoundPaddingBottom = getCompoundPaddingBottom();
3776        final int scrollX = mScrollX;
3777        final int scrollY = mScrollY;
3778        final int right = mRight;
3779        final int left = mLeft;
3780        final int bottom = mBottom;
3781        final int top = mTop;
3782
3783        final Drawables dr = mDrawables;
3784        if (dr != null) {
3785            /*
3786             * Compound, not extended, because the icon is not clipped
3787             * if the text height is smaller.
3788             */
3789
3790            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
3791            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
3792
3793            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3794            // Make sure to update invalidateDrawable() when changing this code.
3795            if (dr.mDrawableLeft != null) {
3796                canvas.save();
3797                canvas.translate(scrollX + mPaddingLeft,
3798                                 scrollY + compoundPaddingTop +
3799                                 (vspace - dr.mDrawableHeightLeft) / 2);
3800                dr.mDrawableLeft.draw(canvas);
3801                canvas.restore();
3802            }
3803
3804            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3805            // Make sure to update invalidateDrawable() when changing this code.
3806            if (dr.mDrawableRight != null) {
3807                canvas.save();
3808                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
3809                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
3810                dr.mDrawableRight.draw(canvas);
3811                canvas.restore();
3812            }
3813
3814            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3815            // Make sure to update invalidateDrawable() when changing this code.
3816            if (dr.mDrawableTop != null) {
3817                canvas.save();
3818                canvas.translate(scrollX + compoundPaddingLeft + (hspace - dr.mDrawableWidthTop) / 2,
3819                        scrollY + mPaddingTop);
3820                dr.mDrawableTop.draw(canvas);
3821                canvas.restore();
3822            }
3823
3824            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3825            // Make sure to update invalidateDrawable() when changing this code.
3826            if (dr.mDrawableBottom != null) {
3827                canvas.save();
3828                canvas.translate(scrollX + compoundPaddingLeft +
3829                        (hspace - dr.mDrawableWidthBottom) / 2,
3830                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
3831                dr.mDrawableBottom.draw(canvas);
3832                canvas.restore();
3833            }
3834        }
3835
3836        if (mPreDrawState == PREDRAW_DONE) {
3837            final ViewTreeObserver observer = getViewTreeObserver();
3838            if (observer != null) {
3839                observer.removeOnPreDrawListener(this);
3840                mPreDrawState = PREDRAW_NOT_REGISTERED;
3841            }
3842        }
3843
3844        int color = mCurTextColor;
3845
3846        if (mLayout == null) {
3847            assumeLayout();
3848        }
3849
3850        Layout layout = mLayout;
3851        int cursorcolor = color;
3852
3853        if (mHint != null && mText.length() == 0) {
3854            if (mHintTextColor != null) {
3855                color = mCurHintTextColor;
3856            }
3857
3858            layout = mHintLayout;
3859        }
3860
3861        mTextPaint.setColor(color);
3862        mTextPaint.drawableState = getDrawableState();
3863
3864        canvas.save();
3865        /*  Would be faster if we didn't have to do this. Can we chop the
3866            (displayable) text so that we don't need to do this ever?
3867        */
3868
3869        int extendedPaddingTop = getExtendedPaddingTop();
3870        int extendedPaddingBottom = getExtendedPaddingBottom();
3871
3872        float clipLeft = compoundPaddingLeft + scrollX;
3873        float clipTop = extendedPaddingTop + scrollY;
3874        float clipRight = right - left - compoundPaddingRight + scrollX;
3875        float clipBottom = bottom - top - extendedPaddingBottom + scrollY;
3876
3877        if (mShadowRadius != 0) {
3878            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
3879            clipRight += Math.max(0, mShadowDx + mShadowRadius);
3880
3881            clipTop += Math.min(0, mShadowDy - mShadowRadius);
3882            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
3883        }
3884
3885        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
3886
3887        int voffsetText = 0;
3888        int voffsetCursor = 0;
3889
3890        // translate in by our padding
3891        {
3892            /* shortcircuit calling getVerticaOffset() */
3893            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
3894                voffsetText = getVerticalOffset(false);
3895                voffsetCursor = getVerticalOffset(true);
3896            }
3897            canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
3898        }
3899
3900        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3901            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
3902                    (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
3903                canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft -
3904                        getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f);
3905            }
3906
3907            if (mMarquee != null && mMarquee.isRunning()) {
3908                canvas.translate(-mMarquee.mScroll, 0.0f);
3909            }
3910        }
3911
3912        Path highlight = null;
3913        int selStart = -1, selEnd = -1;
3914
3915        //  If there is no movement method, then there can be no selection.
3916        //  Check that first and attempt to skip everything having to do with
3917        //  the cursor.
3918        //  XXX This is not strictly true -- a program could set the
3919        //  selection manually if it really wanted to.
3920        if (mMovement != null && (isFocused() || isPressed())) {
3921            selStart = Selection.getSelectionStart(mText);
3922            selEnd = Selection.getSelectionEnd(mText);
3923
3924            if (mCursorVisible && selStart >= 0 && isEnabled()) {
3925                if (mHighlightPath == null)
3926                    mHighlightPath = new Path();
3927
3928                if (selStart == selEnd) {
3929                    if ((SystemClock.uptimeMillis() - mShowCursor) % (2 * BLINK)
3930                        < BLINK) {
3931                        if (mHighlightPathBogus) {
3932                            mHighlightPath.reset();
3933                            mLayout.getCursorPath(selStart, mHighlightPath, mText);
3934                            mHighlightPathBogus = false;
3935                        }
3936
3937                        // XXX should pass to skin instead of drawing directly
3938                        mHighlightPaint.setColor(cursorcolor);
3939                        mHighlightPaint.setStyle(Paint.Style.STROKE);
3940
3941                        highlight = mHighlightPath;
3942                    }
3943                } else {
3944                    if (mHighlightPathBogus) {
3945                        mHighlightPath.reset();
3946                        mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
3947                        mHighlightPathBogus = false;
3948                    }
3949
3950                    // XXX should pass to skin instead of drawing directly
3951                    mHighlightPaint.setColor(mHighlightColor);
3952                    mHighlightPaint.setStyle(Paint.Style.FILL);
3953
3954                    highlight = mHighlightPath;
3955                }
3956            }
3957        }
3958
3959        /*  Comment out until we decide what to do about animations
3960        boolean isLinearTextOn = false;
3961        if (currentTransformation != null) {
3962            isLinearTextOn = mTextPaint.isLinearTextOn();
3963            Matrix m = currentTransformation.getMatrix();
3964            if (!m.isIdentity()) {
3965                // mTextPaint.setLinearTextOn(true);
3966            }
3967        }
3968        */
3969
3970        final InputMethodState ims = mInputMethodState;
3971        if (ims != null && ims.mBatchEditNesting == 0) {
3972            InputMethodManager imm = InputMethodManager.peekInstance();
3973            if (imm != null) {
3974                if (imm.isActive(this)) {
3975                    boolean reported = false;
3976                    if (ims.mContentChanged || ims.mSelectionModeChanged) {
3977                        // We are in extract mode and the content has changed
3978                        // in some way... just report complete new text to the
3979                        // input method.
3980                        reported = reportExtractedText();
3981                    }
3982                    if (!reported && highlight != null) {
3983                        int candStart = -1;
3984                        int candEnd = -1;
3985                        if (mText instanceof Spannable) {
3986                            Spannable sp = (Spannable)mText;
3987                            candStart = EditableInputConnection.getComposingSpanStart(sp);
3988                            candEnd = EditableInputConnection.getComposingSpanEnd(sp);
3989                        }
3990                        imm.updateSelection(this, selStart, selEnd, candStart, candEnd);
3991                    }
3992                }
3993
3994                if (imm.isWatchingCursor(this) && highlight != null) {
3995                    highlight.computeBounds(ims.mTmpRectF, true);
3996                    ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0;
3997
3998                    canvas.getMatrix().mapPoints(ims.mTmpOffset);
3999                    ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]);
4000
4001                    ims.mTmpRectF.offset(0, voffsetCursor - voffsetText);
4002
4003                    ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5),
4004                            (int)(ims.mTmpRectF.top + 0.5),
4005                            (int)(ims.mTmpRectF.right + 0.5),
4006                            (int)(ims.mTmpRectF.bottom + 0.5));
4007
4008                    imm.updateCursor(this,
4009                            ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top,
4010                            ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom);
4011                }
4012            }
4013        }
4014
4015        layout.draw(canvas, highlight, mHighlightPaint, voffsetCursor - voffsetText);
4016
4017        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
4018            canvas.translate((int) mMarquee.getGhostOffset(), 0.0f);
4019            layout.draw(canvas, highlight, mHighlightPaint, voffsetCursor - voffsetText);
4020        }
4021
4022        /*  Comment out until we decide what to do about animations
4023        if (currentTransformation != null) {
4024            mTextPaint.setLinearTextOn(isLinearTextOn);
4025        }
4026        */
4027
4028        canvas.restore();
4029    }
4030
4031    @Override
4032    public void getFocusedRect(Rect r) {
4033        if (mLayout == null) {
4034            super.getFocusedRect(r);
4035            return;
4036        }
4037
4038        int sel = getSelectionEnd();
4039        if (sel < 0) {
4040            super.getFocusedRect(r);
4041            return;
4042        }
4043
4044        int line = mLayout.getLineForOffset(sel);
4045        r.top = mLayout.getLineTop(line);
4046        r.bottom = mLayout.getLineBottom(line);
4047
4048        r.left = (int) mLayout.getPrimaryHorizontal(sel);
4049        r.right = r.left + 1;
4050
4051        // Adjust for padding and gravity.
4052        int paddingLeft = getCompoundPaddingLeft();
4053        int paddingTop = getExtendedPaddingTop();
4054        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4055            paddingTop += getVerticalOffset(false);
4056        }
4057        r.offset(paddingLeft, paddingTop);
4058    }
4059
4060    /**
4061     * Return the number of lines of text, or 0 if the internal Layout has not
4062     * been built.
4063     */
4064    public int getLineCount() {
4065        return mLayout != null ? mLayout.getLineCount() : 0;
4066    }
4067
4068    /**
4069     * Return the baseline for the specified line (0...getLineCount() - 1)
4070     * If bounds is not null, return the top, left, right, bottom extents
4071     * of the specified line in it. If the internal Layout has not been built,
4072     * return 0 and set bounds to (0, 0, 0, 0)
4073     * @param line which line to examine (0..getLineCount() - 1)
4074     * @param bounds Optional. If not null, it returns the extent of the line
4075     * @return the Y-coordinate of the baseline
4076     */
4077    public int getLineBounds(int line, Rect bounds) {
4078        if (mLayout == null) {
4079            if (bounds != null) {
4080                bounds.set(0, 0, 0, 0);
4081            }
4082            return 0;
4083        }
4084        else {
4085            int baseline = mLayout.getLineBounds(line, bounds);
4086
4087            int voffset = getExtendedPaddingTop();
4088            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4089                voffset += getVerticalOffset(true);
4090            }
4091            if (bounds != null) {
4092                bounds.offset(getCompoundPaddingLeft(), voffset);
4093            }
4094            return baseline + voffset;
4095        }
4096    }
4097
4098    @Override
4099    public int getBaseline() {
4100        if (mLayout == null) {
4101            return super.getBaseline();
4102        }
4103
4104        int voffset = 0;
4105        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4106            voffset = getVerticalOffset(true);
4107        }
4108
4109        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
4110    }
4111
4112    @Override
4113    public boolean onKeyDown(int keyCode, KeyEvent event) {
4114        int which = doKeyDown(keyCode, event, null);
4115        if (which == 0) {
4116            // Go through default dispatching.
4117            return super.onKeyDown(keyCode, event);
4118        }
4119
4120        return true;
4121    }
4122
4123    @Override
4124    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
4125        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
4126
4127        int which = doKeyDown(keyCode, down, event);
4128        if (which == 0) {
4129            // Go through default dispatching.
4130            return super.onKeyMultiple(keyCode, repeatCount, event);
4131        }
4132        if (which == -1) {
4133            // Consumed the whole thing.
4134            return true;
4135        }
4136
4137        repeatCount--;
4138
4139        // We are going to dispatch the remaining events to either the input
4140        // or movement method.  To do this, we will just send a repeated stream
4141        // of down and up events until we have done the complete repeatCount.
4142        // It would be nice if those interfaces had an onKeyMultiple() method,
4143        // but adding that is a more complicated change.
4144        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
4145        if (which == 1) {
4146            mInput.onKeyUp(this, (Editable)mText, keyCode, up);
4147            while (--repeatCount > 0) {
4148                mInput.onKeyDown(this, (Editable)mText, keyCode, down);
4149                mInput.onKeyUp(this, (Editable)mText, keyCode, up);
4150            }
4151            if (mError != null && !mErrorWasChanged) {
4152                setError(null, null);
4153            }
4154
4155        } else if (which == 2) {
4156            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4157            while (--repeatCount > 0) {
4158                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
4159                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4160            }
4161        }
4162
4163        return true;
4164    }
4165
4166    /**
4167     * Returns true if pressing ENTER in this field advances focus instead
4168     * of inserting the character.  This is true mostly in single-line fields,
4169     * but also in mail addresses and subjects which will display on multiple
4170     * lines but where it doesn't make sense to insert newlines.
4171     */
4172    private boolean shouldAdvanceFocusOnEnter() {
4173        if (mInput == null) {
4174            return false;
4175        }
4176
4177        if (mSingleLine) {
4178            return true;
4179        }
4180
4181        if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
4182            int variation = mInputType & EditorInfo.TYPE_MASK_VARIATION;
4183
4184            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS ||
4185                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
4186                return true;
4187            }
4188        }
4189
4190        return false;
4191    }
4192
4193    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
4194        if (!isEnabled()) {
4195            return 0;
4196        }
4197
4198        switch (keyCode) {
4199            case KeyEvent.KEYCODE_ENTER:
4200                // If ALT modifier is held, then we always insert a
4201                // newline character.
4202                if ((event.getMetaState()&KeyEvent.META_ALT_ON) == 0) {
4203
4204                    // When mInputContentType is set, we know that we are
4205                    // running in a "modern" cupcake environment, so don't need
4206                    // to worry about the application trying to capture
4207                    // enter key events.
4208                    if (mInputContentType != null) {
4209
4210                        // If there is an action listener, given them a
4211                        // chance to consume the event.
4212                        if (mInputContentType.onEditorActionListener != null &&
4213                                mInputContentType.onEditorActionListener.onEditorAction(
4214                                this, EditorInfo.IME_NULL, event)) {
4215                            mInputContentType.enterDown = true;
4216                            // We are consuming the enter key for them.
4217                            return -1;
4218                        }
4219                    }
4220
4221                    // If our editor should move focus when enter is pressed, or
4222                    // this is a generated event from an IME action button, then
4223                    // don't let it be inserted into the text.
4224                    if ((event.getFlags()&KeyEvent.FLAG_EDITOR_ACTION) != 0
4225                            || shouldAdvanceFocusOnEnter()) {
4226                        return -1;
4227                    }
4228                }
4229                break;
4230
4231            case KeyEvent.KEYCODE_DPAD_CENTER:
4232                if (shouldAdvanceFocusOnEnter()) {
4233                    return 0;
4234                }
4235        }
4236
4237        if (mInput != null) {
4238            /*
4239             * Keep track of what the error was before doing the input
4240             * so that if an input filter changed the error, we leave
4241             * that error showing.  Otherwise, we take down whatever
4242             * error was showing when the user types something.
4243             */
4244            mErrorWasChanged = false;
4245
4246            boolean doDown = true;
4247            if (otherEvent != null) {
4248                try {
4249                    beginBatchEdit();
4250                    boolean handled = mInput.onKeyOther(this, (Editable) mText,
4251                            otherEvent);
4252                    if (mError != null && !mErrorWasChanged) {
4253                        setError(null, null);
4254                    }
4255                    doDown = false;
4256                    if (handled) {
4257                        return -1;
4258                    }
4259                } catch (AbstractMethodError e) {
4260                    // onKeyOther was added after 1.0, so if it isn't
4261                    // implemented we need to try to dispatch as a regular down.
4262                } finally {
4263                    endBatchEdit();
4264                }
4265            }
4266
4267            if (doDown) {
4268                beginBatchEdit();
4269                if (mInput.onKeyDown(this, (Editable) mText, keyCode, event)) {
4270                    endBatchEdit();
4271                    if (mError != null && !mErrorWasChanged) {
4272                        setError(null, null);
4273                    }
4274                    return 1;
4275                }
4276                endBatchEdit();
4277            }
4278        }
4279
4280        // bug 650865: sometimes we get a key event before a layout.
4281        // don't try to move around if we don't know the layout.
4282
4283        if (mMovement != null && mLayout != null) {
4284            boolean doDown = true;
4285            if (otherEvent != null) {
4286                try {
4287                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
4288                            otherEvent);
4289                    doDown = false;
4290                    if (handled) {
4291                        return -1;
4292                    }
4293                } catch (AbstractMethodError e) {
4294                    // onKeyOther was added after 1.0, so if it isn't
4295                    // implemented we need to try to dispatch as a regular down.
4296                }
4297            }
4298            if (doDown) {
4299                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
4300                    return 2;
4301            }
4302        }
4303
4304        return 0;
4305    }
4306
4307    @Override
4308    public boolean onKeyUp(int keyCode, KeyEvent event) {
4309        if (!isEnabled()) {
4310            return super.onKeyUp(keyCode, event);
4311        }
4312
4313        switch (keyCode) {
4314            case KeyEvent.KEYCODE_DPAD_CENTER:
4315                /*
4316                 * If there is a click listener, just call through to
4317                 * super, which will invoke it.
4318                 *
4319                 * If there isn't a click listener, try to show the soft
4320                 * input method.  (It will also
4321                 * call performClick(), but that won't do anything in
4322                 * this case.)
4323                 */
4324                if (mOnClickListener == null) {
4325                    if (mMovement != null && mText instanceof Editable
4326                            && mLayout != null && onCheckIsTextEditor()) {
4327                        InputMethodManager imm = (InputMethodManager)
4328                                getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
4329                        imm.showSoftInput(this, 0);
4330                    }
4331                }
4332                return super.onKeyUp(keyCode, event);
4333
4334            case KeyEvent.KEYCODE_ENTER:
4335                if (mInputContentType != null
4336                        && mInputContentType.onEditorActionListener != null
4337                        && mInputContentType.enterDown) {
4338                    mInputContentType.enterDown = false;
4339                    if (mInputContentType.onEditorActionListener.onEditorAction(
4340                            this, EditorInfo.IME_NULL, event)) {
4341                        return true;
4342                    }
4343                }
4344
4345                if ((event.getFlags()&KeyEvent.FLAG_EDITOR_ACTION) != 0
4346                        || shouldAdvanceFocusOnEnter()) {
4347                    /*
4348                     * If there is a click listener, just call through to
4349                     * super, which will invoke it.
4350                     *
4351                     * If there isn't a click listener, try to advance focus,
4352                     * but still call through to super, which will reset the
4353                     * pressed state and longpress state.  (It will also
4354                     * call performClick(), but that won't do anything in
4355                     * this case.)
4356                     */
4357                    if (mOnClickListener == null) {
4358                        View v = focusSearch(FOCUS_DOWN);
4359
4360                        if (v != null) {
4361                            if (!v.requestFocus(FOCUS_DOWN)) {
4362                                throw new IllegalStateException("focus search returned a view " +
4363                                        "that wasn't able to take focus!");
4364                            }
4365
4366                            /*
4367                             * Return true because we handled the key; super
4368                             * will return false because there was no click
4369                             * listener.
4370                             */
4371                            super.onKeyUp(keyCode, event);
4372                            return true;
4373                        } else if ((event.getFlags()
4374                                & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
4375                            // No target for next focus, but make sure the IME
4376                            // if this came from it.
4377                            InputMethodManager imm = InputMethodManager.peekInstance();
4378                            if (imm != null) {
4379                                imm.hideSoftInputFromWindow(getWindowToken(), 0);
4380                            }
4381                        }
4382                    }
4383
4384                    return super.onKeyUp(keyCode, event);
4385                }
4386        }
4387
4388        if (mInput != null)
4389            if (mInput.onKeyUp(this, (Editable) mText, keyCode, event))
4390                return true;
4391
4392        if (mMovement != null && mLayout != null)
4393            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
4394                return true;
4395
4396        return super.onKeyUp(keyCode, event);
4397    }
4398
4399    @Override public boolean onCheckIsTextEditor() {
4400        return mInputType != EditorInfo.TYPE_NULL;
4401    }
4402
4403    @Override public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
4404        if (onCheckIsTextEditor()) {
4405            if (mInputMethodState == null) {
4406                mInputMethodState = new InputMethodState();
4407            }
4408            outAttrs.inputType = mInputType;
4409            if (mInputContentType != null) {
4410                outAttrs.imeOptions = mInputContentType.imeOptions;
4411                outAttrs.privateImeOptions = mInputContentType.privateImeOptions;
4412                outAttrs.actionLabel = mInputContentType.imeActionLabel;
4413                outAttrs.actionId = mInputContentType.imeActionId;
4414                outAttrs.extras = mInputContentType.extras;
4415            } else {
4416                outAttrs.imeOptions = EditorInfo.IME_NULL;
4417            }
4418            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
4419                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
4420                if (focusSearch(FOCUS_DOWN) != null) {
4421                    // An action has not been set, but the enter key will move to
4422                    // the next focus, so set the action to that.
4423                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
4424                } else {
4425                    // An action has not been set, and there is no focus to move
4426                    // to, so let's just supply a "done" action.
4427                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
4428                }
4429                if (!shouldAdvanceFocusOnEnter()) {
4430                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
4431                }
4432            }
4433            if ((outAttrs.inputType & (InputType.TYPE_MASK_CLASS
4434                    | InputType.TYPE_TEXT_FLAG_MULTI_LINE))
4435                    == (InputType.TYPE_CLASS_TEXT
4436                            | InputType.TYPE_TEXT_FLAG_MULTI_LINE)) {
4437                // Multi-line text editors should always show an enter key.
4438                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
4439            }
4440            outAttrs.hintText = mHint;
4441            if (mText instanceof Editable) {
4442                InputConnection ic = new EditableInputConnection(this);
4443                outAttrs.initialSelStart = Selection.getSelectionStart(mText);
4444                outAttrs.initialSelEnd = Selection.getSelectionEnd(mText);
4445                outAttrs.initialCapsMode = ic.getCursorCapsMode(mInputType);
4446                return ic;
4447            }
4448        }
4449        return null;
4450    }
4451
4452    /**
4453     * If this TextView contains editable content, extract a portion of it
4454     * based on the information in <var>request</var> in to <var>outText</var>.
4455     * @return Returns true if the text was successfully extracted, else false.
4456     */
4457    public boolean extractText(ExtractedTextRequest request,
4458            ExtractedText outText) {
4459        return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN,
4460                EXTRACT_UNKNOWN, outText);
4461    }
4462
4463    static final int EXTRACT_NOTHING = -2;
4464    static final int EXTRACT_UNKNOWN = -1;
4465
4466    boolean extractTextInternal(ExtractedTextRequest request,
4467            int partialStartOffset, int partialEndOffset, int delta,
4468            ExtractedText outText) {
4469        final CharSequence content = mText;
4470        if (content != null) {
4471            if (partialStartOffset != EXTRACT_NOTHING) {
4472                final int N = content.length();
4473                if (partialStartOffset < 0) {
4474                    outText.partialStartOffset = outText.partialEndOffset = -1;
4475                    partialStartOffset = 0;
4476                    partialEndOffset = N;
4477                } else {
4478                    // Adjust offsets to ensure we contain full spans.
4479                    if (content instanceof Spanned) {
4480                        Spanned spanned = (Spanned)content;
4481                        Object[] spans = spanned.getSpans(partialStartOffset,
4482                                partialEndOffset, ParcelableSpan.class);
4483                        int i = spans.length;
4484                        while (i > 0) {
4485                            i--;
4486                            int j = spanned.getSpanStart(spans[i]);
4487                            if (j < partialStartOffset) partialStartOffset = j;
4488                            j = spanned.getSpanEnd(spans[i]);
4489                            if (j > partialEndOffset) partialEndOffset = j;
4490                        }
4491                    }
4492                    outText.partialStartOffset = partialStartOffset;
4493                    outText.partialEndOffset = partialEndOffset;
4494                    // Now use the delta to determine the actual amount of text
4495                    // we need.
4496                    partialEndOffset += delta;
4497                    if (partialEndOffset > N) {
4498                        partialEndOffset = N;
4499                    } else if (partialEndOffset < 0) {
4500                        partialEndOffset = 0;
4501                    }
4502                }
4503                if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) {
4504                    outText.text = content.subSequence(partialStartOffset,
4505                            partialEndOffset);
4506                } else {
4507                    outText.text = TextUtils.substring(content, partialStartOffset,
4508                            partialEndOffset);
4509                }
4510            }
4511            outText.flags = 0;
4512            if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) {
4513                outText.flags |= ExtractedText.FLAG_SELECTING;
4514            }
4515            if (mSingleLine) {
4516                outText.flags |= ExtractedText.FLAG_SINGLE_LINE;
4517            }
4518            outText.startOffset = 0;
4519            outText.selectionStart = Selection.getSelectionStart(content);
4520            outText.selectionEnd = Selection.getSelectionEnd(content);
4521            return true;
4522        }
4523        return false;
4524    }
4525
4526    boolean reportExtractedText() {
4527        final InputMethodState ims = mInputMethodState;
4528        if (ims != null) {
4529            final boolean contentChanged = ims.mContentChanged;
4530            if (contentChanged || ims.mSelectionModeChanged) {
4531                ims.mContentChanged = false;
4532                ims.mSelectionModeChanged = false;
4533                final ExtractedTextRequest req = mInputMethodState.mExtracting;
4534                if (req != null) {
4535                    InputMethodManager imm = InputMethodManager.peekInstance();
4536                    if (imm != null) {
4537                        if (DEBUG_EXTRACT) Log.v(TAG, "Retrieving extracted start="
4538                                + ims.mChangedStart + " end=" + ims.mChangedEnd
4539                                + " delta=" + ims.mChangedDelta);
4540                        if (ims.mChangedStart < 0 && !contentChanged) {
4541                            ims.mChangedStart = EXTRACT_NOTHING;
4542                        }
4543                        if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd,
4544                                ims.mChangedDelta, ims.mTmpExtracted)) {
4545                            if (DEBUG_EXTRACT) Log.v(TAG, "Reporting extracted start="
4546                                    + ims.mTmpExtracted.partialStartOffset
4547                                    + " end=" + ims.mTmpExtracted.partialEndOffset
4548                                    + ": " + ims.mTmpExtracted.text);
4549                            imm.updateExtractedText(this, req.token,
4550                                    mInputMethodState.mTmpExtracted);
4551                            return true;
4552                        }
4553                    }
4554                }
4555            }
4556        }
4557        return false;
4558    }
4559
4560    /**
4561     * This is used to remove all style-impacting spans from text before new
4562     * extracted text is being replaced into it, so that we don't have any
4563     * lingering spans applied during the replace.
4564     */
4565    static void removeParcelableSpans(Spannable spannable, int start, int end) {
4566        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
4567        int i = spans.length;
4568        while (i > 0) {
4569            i--;
4570            spannable.removeSpan(spans[i]);
4571        }
4572    }
4573
4574    /**
4575     * Apply to this text view the given extracted text, as previously
4576     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
4577     */
4578    public void setExtractedText(ExtractedText text) {
4579        Editable content = getEditableText();
4580        if (text.text != null) {
4581            if (content == null) {
4582                setText(text.text, TextView.BufferType.EDITABLE);
4583            } else if (text.partialStartOffset < 0) {
4584                removeParcelableSpans(content, 0, content.length());
4585                content.replace(0, content.length(), text.text);
4586            } else {
4587                final int N = content.length();
4588                int start = text.partialStartOffset;
4589                if (start > N) start = N;
4590                int end = text.partialEndOffset;
4591                if (end > N) end = N;
4592                removeParcelableSpans(content, start, end);
4593                content.replace(start, end, text.text);
4594            }
4595        }
4596
4597        // Now set the selection position...  make sure it is in range, to
4598        // avoid crashes.  If this is a partial update, it is possible that
4599        // the underlying text may have changed, causing us problems here.
4600        // Also we just don't want to trust clients to do the right thing.
4601        Spannable sp = (Spannable)getText();
4602        final int N = sp.length();
4603        int start = text.selectionStart;
4604        if (start < 0) start = 0;
4605        else if (start > N) start = N;
4606        int end = text.selectionEnd;
4607        if (end < 0) end = 0;
4608        else if (end > N) end = N;
4609        Selection.setSelection(sp, start, end);
4610
4611        // Finally, update the selection mode.
4612        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
4613            MetaKeyKeyListener.startSelecting(this, sp);
4614        } else {
4615            MetaKeyKeyListener.stopSelecting(this, sp);
4616        }
4617    }
4618
4619    /**
4620     * @hide
4621     */
4622    public void setExtracting(ExtractedTextRequest req) {
4623        if (mInputMethodState != null) {
4624            mInputMethodState.mExtracting = req;
4625        }
4626    }
4627
4628    /**
4629     * Called by the framework in response to a text completion from
4630     * the current input method, provided by it calling
4631     * {@link InputConnection#commitCompletion
4632     * InputConnection.commitCompletion()}.  The default implementation does
4633     * nothing; text views that are supporting auto-completion should override
4634     * this to do their desired behavior.
4635     *
4636     * @param text The auto complete text the user has selected.
4637     */
4638    public void onCommitCompletion(CompletionInfo text) {
4639    }
4640
4641    public void beginBatchEdit() {
4642        final InputMethodState ims = mInputMethodState;
4643        if (ims != null) {
4644            int nesting = ++ims.mBatchEditNesting;
4645            if (nesting == 1) {
4646                ims.mCursorChanged = false;
4647                ims.mChangedDelta = 0;
4648                if (ims.mContentChanged) {
4649                    // We already have a pending change from somewhere else,
4650                    // so turn this into a full update.
4651                    ims.mChangedStart = 0;
4652                    ims.mChangedEnd = mText.length();
4653                } else {
4654                    ims.mChangedStart = EXTRACT_UNKNOWN;
4655                    ims.mChangedEnd = EXTRACT_UNKNOWN;
4656                    ims.mContentChanged = false;
4657                }
4658                onBeginBatchEdit();
4659            }
4660        }
4661    }
4662
4663    public void endBatchEdit() {
4664        final InputMethodState ims = mInputMethodState;
4665        if (ims != null) {
4666            int nesting = --ims.mBatchEditNesting;
4667            if (nesting == 0) {
4668                finishBatchEdit(ims);
4669            }
4670        }
4671    }
4672
4673    void ensureEndedBatchEdit() {
4674        final InputMethodState ims = mInputMethodState;
4675        if (ims != null && ims.mBatchEditNesting != 0) {
4676            ims.mBatchEditNesting = 0;
4677            finishBatchEdit(ims);
4678        }
4679    }
4680
4681    void finishBatchEdit(final InputMethodState ims) {
4682        onEndBatchEdit();
4683
4684        if (ims.mContentChanged || ims.mSelectionModeChanged) {
4685            updateAfterEdit();
4686            reportExtractedText();
4687        } else if (ims.mCursorChanged) {
4688            // Cheezy way to get us to report the current cursor location.
4689            invalidateCursor();
4690        }
4691    }
4692
4693    void updateAfterEdit() {
4694        invalidate();
4695        int curs = Selection.getSelectionStart(mText);
4696
4697        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) ==
4698                             Gravity.BOTTOM) {
4699            registerForPreDraw();
4700        }
4701
4702        if (curs >= 0) {
4703            mHighlightPathBogus = true;
4704
4705            if (isFocused()) {
4706                mShowCursor = SystemClock.uptimeMillis();
4707                makeBlink();
4708            }
4709        }
4710
4711        checkForResize();
4712    }
4713
4714    /**
4715     * Called by the framework in response to a request to begin a batch
4716     * of edit operations through a call to link {@link #beginBatchEdit()}.
4717     */
4718    public void onBeginBatchEdit() {
4719    }
4720
4721    /**
4722     * Called by the framework in response to a request to end a batch
4723     * of edit operations through a call to link {@link #endBatchEdit}.
4724     */
4725    public void onEndBatchEdit() {
4726    }
4727
4728    /**
4729     * Called by the framework in response to a private command from the
4730     * current method, provided by it calling
4731     * {@link InputConnection#performPrivateCommand
4732     * InputConnection.performPrivateCommand()}.
4733     *
4734     * @param action The action name of the command.
4735     * @param data Any additional data for the command.  This may be null.
4736     * @return Return true if you handled the command, else false.
4737     */
4738    public boolean onPrivateIMECommand(String action, Bundle data) {
4739        return false;
4740    }
4741
4742    private void nullLayouts() {
4743        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
4744            mSavedLayout = (BoringLayout) mLayout;
4745        }
4746        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
4747            mSavedHintLayout = (BoringLayout) mHintLayout;
4748        }
4749
4750        mLayout = mHintLayout = null;
4751    }
4752
4753    /**
4754     * Make a new Layout based on the already-measured size of the view,
4755     * on the assumption that it was measured correctly at some point.
4756     */
4757    private void assumeLayout() {
4758        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
4759
4760        if (width < 1) {
4761            width = 0;
4762        }
4763
4764        int physicalWidth = width;
4765
4766        if (mHorizontallyScrolling) {
4767            width = VERY_WIDE;
4768        }
4769
4770        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
4771                      physicalWidth, false);
4772    }
4773
4774    /**
4775     * The width passed in is now the desired layout width,
4776     * not the full view width with padding.
4777     * {@hide}
4778     */
4779    protected void makeNewLayout(int w, int hintWidth,
4780                                 BoringLayout.Metrics boring,
4781                                 BoringLayout.Metrics hintBoring,
4782                                 int ellipsisWidth, boolean bringIntoView) {
4783        stopMarquee();
4784
4785        mHighlightPathBogus = true;
4786
4787        if (w < 0) {
4788            w = 0;
4789        }
4790        if (hintWidth < 0) {
4791            hintWidth = 0;
4792        }
4793
4794        Layout.Alignment alignment;
4795        switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
4796            case Gravity.CENTER_HORIZONTAL:
4797                alignment = Layout.Alignment.ALIGN_CENTER;
4798                break;
4799
4800            case Gravity.RIGHT:
4801                alignment = Layout.Alignment.ALIGN_OPPOSITE;
4802                break;
4803
4804            default:
4805                alignment = Layout.Alignment.ALIGN_NORMAL;
4806        }
4807
4808        boolean shouldEllipsize = mEllipsize != null && mInput == null;
4809
4810        if (mText instanceof Spannable) {
4811            mLayout = new DynamicLayout(mText, mTransformed, mTextPaint, w,
4812                    alignment, mSpacingMult,
4813                    mSpacingAdd, mIncludePad, mInput == null ? mEllipsize : null,
4814                    ellipsisWidth);
4815        } else {
4816            if (boring == UNKNOWN_BORING) {
4817                boring = BoringLayout.isBoring(mTransformed, mTextPaint,
4818                                               mBoring);
4819                if (boring != null) {
4820                    mBoring = boring;
4821                }
4822            }
4823
4824            if (boring != null) {
4825                if (boring.width <= w &&
4826                    (mEllipsize == null || boring.width <= ellipsisWidth)) {
4827                    if (mSavedLayout != null) {
4828                        mLayout = mSavedLayout.
4829                                replaceOrMake(mTransformed, mTextPaint,
4830                                w, alignment, mSpacingMult, mSpacingAdd,
4831                                boring, mIncludePad);
4832                    } else {
4833                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
4834                                w, alignment, mSpacingMult, mSpacingAdd,
4835                                boring, mIncludePad);
4836                    }
4837                    // Log.e("aaa", "Boring: " + mTransformed);
4838
4839                    mSavedLayout = (BoringLayout) mLayout;
4840                } else if (shouldEllipsize && boring.width <= w) {
4841                    if (mSavedLayout != null) {
4842                        mLayout = mSavedLayout.
4843                                replaceOrMake(mTransformed, mTextPaint,
4844                                w, alignment, mSpacingMult, mSpacingAdd,
4845                                boring, mIncludePad, mEllipsize,
4846                                ellipsisWidth);
4847                    } else {
4848                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
4849                                w, alignment, mSpacingMult, mSpacingAdd,
4850                                boring, mIncludePad, mEllipsize,
4851                                ellipsisWidth);
4852                    }
4853                } else if (shouldEllipsize) {
4854                    mLayout = new StaticLayout(mTransformed,
4855                                0, mTransformed.length(),
4856                                mTextPaint, w, alignment, mSpacingMult,
4857                                mSpacingAdd, mIncludePad, mEllipsize,
4858                                ellipsisWidth);
4859                } else {
4860                    mLayout = new StaticLayout(mTransformed, mTextPaint,
4861                            w, alignment, mSpacingMult, mSpacingAdd,
4862                            mIncludePad);
4863                    // Log.e("aaa", "Boring but wide: " + mTransformed);
4864                }
4865            } else if (shouldEllipsize) {
4866                mLayout = new StaticLayout(mTransformed,
4867                            0, mTransformed.length(),
4868                            mTextPaint, w, alignment, mSpacingMult,
4869                            mSpacingAdd, mIncludePad, mEllipsize,
4870                            ellipsisWidth);
4871            } else {
4872                mLayout = new StaticLayout(mTransformed, mTextPaint,
4873                        w, alignment, mSpacingMult, mSpacingAdd,
4874                        mIncludePad);
4875            }
4876        }
4877
4878        shouldEllipsize = mEllipsize != null;
4879        mHintLayout = null;
4880
4881        if (mHint != null) {
4882            if (shouldEllipsize) hintWidth = w;
4883
4884            if (hintBoring == UNKNOWN_BORING) {
4885                hintBoring = BoringLayout.isBoring(mHint, mTextPaint,
4886                                                   mHintBoring);
4887                if (hintBoring != null) {
4888                    mHintBoring = hintBoring;
4889                }
4890            }
4891
4892            if (hintBoring != null) {
4893                if (hintBoring.width <= hintWidth &&
4894                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
4895                    if (mSavedHintLayout != null) {
4896                        mHintLayout = mSavedHintLayout.
4897                                replaceOrMake(mHint, mTextPaint,
4898                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
4899                                hintBoring, mIncludePad);
4900                    } else {
4901                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
4902                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
4903                                hintBoring, mIncludePad);
4904                    }
4905
4906                    mSavedHintLayout = (BoringLayout) mHintLayout;
4907                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
4908                    if (mSavedHintLayout != null) {
4909                        mHintLayout = mSavedHintLayout.
4910                                replaceOrMake(mHint, mTextPaint,
4911                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
4912                                hintBoring, mIncludePad, mEllipsize,
4913                                ellipsisWidth);
4914                    } else {
4915                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
4916                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
4917                                hintBoring, mIncludePad, mEllipsize,
4918                                ellipsisWidth);
4919                    }
4920                } else if (shouldEllipsize) {
4921                    mHintLayout = new StaticLayout(mHint,
4922                                0, mHint.length(),
4923                                mTextPaint, hintWidth, alignment, mSpacingMult,
4924                                mSpacingAdd, mIncludePad, mEllipsize,
4925                                ellipsisWidth);
4926                } else {
4927                    mHintLayout = new StaticLayout(mHint, mTextPaint,
4928                            hintWidth, alignment, mSpacingMult, mSpacingAdd,
4929                            mIncludePad);
4930                }
4931            } else if (shouldEllipsize) {
4932                mHintLayout = new StaticLayout(mHint,
4933                            0, mHint.length(),
4934                            mTextPaint, hintWidth, alignment, mSpacingMult,
4935                            mSpacingAdd, mIncludePad, mEllipsize,
4936                            ellipsisWidth);
4937            } else {
4938                mHintLayout = new StaticLayout(mHint, mTextPaint,
4939                        hintWidth, alignment, mSpacingMult, mSpacingAdd,
4940                        mIncludePad);
4941            }
4942        }
4943
4944        if (bringIntoView) {
4945            registerForPreDraw();
4946        }
4947
4948        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4949            if (!compressText(ellipsisWidth)) {
4950                final int height = mLayoutParams.height;
4951                // If the size of the view does not depend on the size of the text, try to
4952                // start the marquee immediately
4953                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.FILL_PARENT) {
4954                    startMarquee();
4955                } else {
4956                    // Defer the start of the marquee until we know our width (see setFrame())
4957                    mRestartMarquee = true;
4958                }
4959            }
4960        }
4961    }
4962
4963    private boolean compressText(float width) {
4964        // Only compress the text if it hasn't been compressed by the previous pass
4965        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
4966                mTextPaint.getTextScaleX() == 1.0f) {
4967            final float textWidth = mLayout.getLineWidth(0);
4968            final float overflow = (textWidth + 1.0f - width) / width;
4969            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
4970                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
4971                post(new Runnable() {
4972                    public void run() {
4973                        requestLayout();
4974                    }
4975                });
4976                return true;
4977            }
4978        }
4979
4980        return false;
4981    }
4982
4983    private static int desired(Layout layout) {
4984        int n = layout.getLineCount();
4985        CharSequence text = layout.getText();
4986        float max = 0;
4987
4988        // if any line was wrapped, we can't use it.
4989        // but it's ok for the last line not to have a newline
4990
4991        for (int i = 0; i < n - 1; i++) {
4992            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
4993                return -1;
4994        }
4995
4996        for (int i = 0; i < n; i++) {
4997            max = Math.max(max, layout.getLineWidth(i));
4998        }
4999
5000        return (int) FloatMath.ceil(max);
5001    }
5002
5003    /**
5004     * Set whether the TextView includes extra top and bottom padding to make
5005     * room for accents that go above the normal ascent and descent.
5006     * The default is true.
5007     *
5008     * @attr ref android.R.styleable#TextView_includeFontPadding
5009     */
5010    public void setIncludeFontPadding(boolean includepad) {
5011        mIncludePad = includepad;
5012
5013        if (mLayout != null) {
5014            nullLayouts();
5015            requestLayout();
5016            invalidate();
5017        }
5018    }
5019
5020    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
5021
5022    @Override
5023    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
5024        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
5025        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
5026        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
5027        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
5028
5029        int width;
5030        int height;
5031
5032        BoringLayout.Metrics boring = UNKNOWN_BORING;
5033        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
5034
5035        int des = -1;
5036        boolean fromexisting = false;
5037
5038        if (widthMode == MeasureSpec.EXACTLY) {
5039            // Parent has told us how big to be. So be it.
5040            width = widthSize;
5041        } else {
5042            if (mLayout != null && mEllipsize == null) {
5043                des = desired(mLayout);
5044            }
5045
5046            if (des < 0) {
5047                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mBoring);
5048                if (boring != null) {
5049                    mBoring = boring;
5050                }
5051            } else {
5052                fromexisting = true;
5053            }
5054
5055            if (boring == null || boring == UNKNOWN_BORING) {
5056                if (des < 0) {
5057                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
5058                }
5059
5060                width = des;
5061            } else {
5062                width = boring.width;
5063            }
5064
5065            final Drawables dr = mDrawables;
5066            if (dr != null) {
5067                width = Math.max(width, dr.mDrawableWidthTop);
5068                width = Math.max(width, dr.mDrawableWidthBottom);
5069            }
5070
5071            if (mHint != null) {
5072                int hintDes = -1;
5073                int hintWidth;
5074
5075                if (mHintLayout != null && mEllipsize == null) {
5076                    hintDes = desired(mHintLayout);
5077                }
5078
5079                if (hintDes < 0) {
5080                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mHintBoring);
5081                    if (hintBoring != null) {
5082                        mHintBoring = hintBoring;
5083                    }
5084                }
5085
5086                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
5087                    if (hintDes < 0) {
5088                        hintDes = (int) FloatMath.ceil(
5089                                Layout.getDesiredWidth(mHint, mTextPaint));
5090                    }
5091
5092                    hintWidth = hintDes;
5093                } else {
5094                    hintWidth = hintBoring.width;
5095                }
5096
5097                if (hintWidth > width) {
5098                    width = hintWidth;
5099                }
5100            }
5101
5102            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
5103
5104            if (mMaxWidthMode == EMS) {
5105                width = Math.min(width, mMaxWidth * getLineHeight());
5106            } else {
5107                width = Math.min(width, mMaxWidth);
5108            }
5109
5110            if (mMinWidthMode == EMS) {
5111                width = Math.max(width, mMinWidth * getLineHeight());
5112            } else {
5113                width = Math.max(width, mMinWidth);
5114            }
5115
5116            // Check against our minimum width
5117            width = Math.max(width, getSuggestedMinimumWidth());
5118
5119            if (widthMode == MeasureSpec.AT_MOST) {
5120                width = Math.min(widthSize, width);
5121            }
5122        }
5123
5124        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
5125        int unpaddedWidth = want;
5126        int hintWant = want;
5127
5128        if (mHorizontallyScrolling)
5129            want = VERY_WIDE;
5130
5131        int hintWidth = mHintLayout == null ? hintWant : mHintLayout.getWidth();
5132
5133        if (mLayout == null) {
5134            makeNewLayout(want, hintWant, boring, hintBoring,
5135                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
5136        } else if ((mLayout.getWidth() != want) || (hintWidth != hintWant) ||
5137                   (mLayout.getEllipsizedWidth() !=
5138                        width - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
5139            if (mHint == null && mEllipsize == null &&
5140                    want > mLayout.getWidth() &&
5141                    (mLayout instanceof BoringLayout ||
5142                            (fromexisting && des >= 0 && des <= want))) {
5143                mLayout.increaseWidthTo(want);
5144            } else {
5145                makeNewLayout(want, hintWant, boring, hintBoring,
5146                              width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
5147            }
5148        } else {
5149            // Width has not changed.
5150        }
5151
5152        if (heightMode == MeasureSpec.EXACTLY) {
5153            // Parent has told us how big to be. So be it.
5154            height = heightSize;
5155            mDesiredHeightAtMeasure = -1;
5156        } else {
5157            int desired = getDesiredHeight();
5158
5159            height = desired;
5160            mDesiredHeightAtMeasure = desired;
5161
5162            if (heightMode == MeasureSpec.AT_MOST) {
5163                height = Math.min(desired, height);
5164            }
5165        }
5166
5167        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
5168        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
5169            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
5170        }
5171
5172        /*
5173         * We didn't let makeNewLayout() register to bring the cursor into view,
5174         * so do it here if there is any possibility that it is needed.
5175         */
5176        if (mMovement != null ||
5177            mLayout.getWidth() > unpaddedWidth ||
5178            mLayout.getHeight() > unpaddedHeight) {
5179            registerForPreDraw();
5180        } else {
5181            scrollTo(0, 0);
5182        }
5183
5184        setMeasuredDimension(width, height);
5185    }
5186
5187    private int getDesiredHeight() {
5188        return Math.max(
5189                getDesiredHeight(mLayout, true),
5190                getDesiredHeight(mHintLayout, mEllipsize != null));
5191    }
5192
5193    private int getDesiredHeight(Layout layout, boolean cap) {
5194        if (layout == null) {
5195            return 0;
5196        }
5197
5198        int linecount = layout.getLineCount();
5199        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
5200        int desired = layout.getLineTop(linecount);
5201
5202        final Drawables dr = mDrawables;
5203        if (dr != null) {
5204            desired = Math.max(desired, dr.mDrawableHeightLeft);
5205            desired = Math.max(desired, dr.mDrawableHeightRight);
5206        }
5207
5208        desired += pad;
5209
5210        if (mMaxMode == LINES) {
5211            /*
5212             * Don't cap the hint to a certain number of lines.
5213             * (Do cap it, though, if we have a maximum pixel height.)
5214             */
5215            if (cap) {
5216                if (linecount > mMaximum) {
5217                    desired = layout.getLineTop(mMaximum) +
5218                              layout.getBottomPadding();
5219
5220                    if (dr != null) {
5221                        desired = Math.max(desired, dr.mDrawableHeightLeft);
5222                        desired = Math.max(desired, dr.mDrawableHeightRight);
5223                    }
5224
5225                    desired += pad;
5226                    linecount = mMaximum;
5227                }
5228            }
5229        } else {
5230            desired = Math.min(desired, mMaximum);
5231        }
5232
5233        if (mMinMode == LINES) {
5234            if (linecount < mMinimum) {
5235                desired += getLineHeight() * (mMinimum - linecount);
5236            }
5237        } else {
5238            desired = Math.max(desired, mMinimum);
5239        }
5240
5241        // Check against our minimum height
5242        desired = Math.max(desired, getSuggestedMinimumHeight());
5243
5244        return desired;
5245    }
5246
5247    /**
5248     * Check whether a change to the existing text layout requires a
5249     * new view layout.
5250     */
5251    private void checkForResize() {
5252        boolean sizeChanged = false;
5253
5254        if (mLayout != null) {
5255            // Check if our width changed
5256            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
5257                sizeChanged = true;
5258                invalidate();
5259            }
5260
5261            // Check if our height changed
5262            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
5263                int desiredHeight = getDesiredHeight();
5264
5265                if (desiredHeight != this.getHeight()) {
5266                    sizeChanged = true;
5267                }
5268            } else if (mLayoutParams.height == LayoutParams.FILL_PARENT) {
5269                if (mDesiredHeightAtMeasure >= 0) {
5270                    int desiredHeight = getDesiredHeight();
5271
5272                    if (desiredHeight != mDesiredHeightAtMeasure) {
5273                        sizeChanged = true;
5274                    }
5275                }
5276            }
5277        }
5278
5279        if (sizeChanged) {
5280            requestLayout();
5281            // caller will have already invalidated
5282        }
5283    }
5284
5285    /**
5286     * Check whether entirely new text requires a new view layout
5287     * or merely a new text layout.
5288     */
5289    private void checkForRelayout() {
5290        // If we have a fixed width, we can just swap in a new text layout
5291        // if the text height stays the same or if the view height is fixed.
5292
5293        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
5294                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
5295                (mHint == null || mHintLayout != null) &&
5296                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
5297            // Static width, so try making a new text layout.
5298
5299            int oldht = mLayout.getHeight();
5300            int want = mLayout.getWidth();
5301            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
5302
5303            /*
5304             * No need to bring the text into view, since the size is not
5305             * changing (unless we do the requestLayout(), in which case it
5306             * will happen at measure).
5307             */
5308            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
5309                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
5310
5311            // In a fixed-height view, so use our new text layout.
5312            if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
5313                mLayoutParams.height != LayoutParams.FILL_PARENT) {
5314                invalidate();
5315                return;
5316            }
5317
5318            // Dynamic height, but height has stayed the same,
5319            // so use our new text layout.
5320            if (mLayout.getHeight() == oldht &&
5321                (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
5322                invalidate();
5323                return;
5324            }
5325
5326            // We lose: the height has changed and we have a dynamic height.
5327            // Request a new view layout using our new text layout.
5328            requestLayout();
5329            invalidate();
5330        } else {
5331            // Dynamic width, so we have no choice but to request a new
5332            // view layout with a new text layout.
5333
5334            nullLayouts();
5335            requestLayout();
5336            invalidate();
5337        }
5338    }
5339
5340    /**
5341     * Returns true if anything changed.
5342     */
5343    private boolean bringTextIntoView() {
5344        int line = 0;
5345        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5346            line = mLayout.getLineCount() - 1;
5347        }
5348
5349        Layout.Alignment a = mLayout.getParagraphAlignment(line);
5350        int dir = mLayout.getParagraphDirection(line);
5351        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5352        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
5353        int ht = mLayout.getHeight();
5354
5355        int scrollx, scrolly;
5356
5357        if (a == Layout.Alignment.ALIGN_CENTER) {
5358            /*
5359             * Keep centered if possible, or, if it is too wide to fit,
5360             * keep leading edge in view.
5361             */
5362
5363            int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
5364            int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5365
5366            if (right - left < hspace) {
5367                scrollx = (right + left) / 2 - hspace / 2;
5368            } else {
5369                if (dir < 0) {
5370                    scrollx = right - hspace;
5371                } else {
5372                    scrollx = left;
5373                }
5374            }
5375        } else if (a == Layout.Alignment.ALIGN_NORMAL) {
5376            /*
5377             * Keep leading edge in view.
5378             */
5379
5380            if (dir < 0) {
5381                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5382                scrollx = right - hspace;
5383            } else {
5384                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
5385            }
5386        } else /* a == Layout.Alignment.ALIGN_OPPOSITE */ {
5387            /*
5388             * Keep trailing edge in view.
5389             */
5390
5391            if (dir < 0) {
5392                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
5393            } else {
5394                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5395                scrollx = right - hspace;
5396            }
5397        }
5398
5399        if (ht < vspace) {
5400            scrolly = 0;
5401        } else {
5402            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5403                scrolly = ht - vspace;
5404            } else {
5405                scrolly = 0;
5406            }
5407        }
5408
5409        if (scrollx != mScrollX || scrolly != mScrollY) {
5410            scrollTo(scrollx, scrolly);
5411            return true;
5412        } else {
5413            return false;
5414        }
5415    }
5416
5417    /**
5418     * Move the point, specified by the offset, into the view if it is needed.
5419     * This has to be called after layout. Returns true if anything changed.
5420     */
5421    public boolean bringPointIntoView(int offset) {
5422        boolean changed = false;
5423
5424        int line = mLayout.getLineForOffset(offset);
5425
5426        // FIXME: Is it okay to truncate this, or should we round?
5427        final int x = (int)mLayout.getPrimaryHorizontal(offset);
5428        final int top = mLayout.getLineTop(line);
5429        final int bottom = mLayout.getLineTop(line+1);
5430
5431        int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
5432        int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5433        int ht = mLayout.getHeight();
5434
5435        int grav;
5436
5437        switch (mLayout.getParagraphAlignment(line)) {
5438            case ALIGN_NORMAL:
5439                grav = 1;
5440                break;
5441
5442            case ALIGN_OPPOSITE:
5443                grav = -1;
5444                break;
5445
5446            default:
5447                grav = 0;
5448        }
5449
5450        grav *= mLayout.getParagraphDirection(line);
5451
5452        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5453        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
5454
5455        int hslack = (bottom - top) / 2;
5456        int vslack = hslack;
5457
5458        if (vslack > vspace / 4)
5459            vslack = vspace / 4;
5460        if (hslack > hspace / 4)
5461            hslack = hspace / 4;
5462
5463        int hs = mScrollX;
5464        int vs = mScrollY;
5465
5466        if (top - vs < vslack)
5467            vs = top - vslack;
5468        if (bottom - vs > vspace - vslack)
5469            vs = bottom - (vspace - vslack);
5470        if (ht - vs < vspace)
5471            vs = ht - vspace;
5472        if (0 - vs > 0)
5473            vs = 0;
5474
5475        if (grav != 0) {
5476            if (x - hs < hslack) {
5477                hs = x - hslack;
5478            }
5479            if (x - hs > hspace - hslack) {
5480                hs = x - (hspace - hslack);
5481            }
5482        }
5483
5484        if (grav < 0) {
5485            if (left - hs > 0)
5486                hs = left;
5487            if (right - hs < hspace)
5488                hs = right - hspace;
5489        } else if (grav > 0) {
5490            if (right - hs < hspace)
5491                hs = right - hspace;
5492            if (left - hs > 0)
5493                hs = left;
5494        } else /* grav == 0 */ {
5495            if (right - left <= hspace) {
5496                /*
5497                 * If the entire text fits, center it exactly.
5498                 */
5499                hs = left - (hspace - (right - left)) / 2;
5500            } else if (x > right - hslack) {
5501                /*
5502                 * If we are near the right edge, keep the right edge
5503                 * at the edge of the view.
5504                 */
5505                hs = right - hspace;
5506            } else if (x < left + hslack) {
5507                /*
5508                 * If we are near the left edge, keep the left edge
5509                 * at the edge of the view.
5510                 */
5511                hs = left;
5512            } else if (left > hs) {
5513                /*
5514                 * Is there whitespace visible at the left?  Fix it if so.
5515                 */
5516                hs = left;
5517            } else if (right < hs + hspace) {
5518                /*
5519                 * Is there whitespace visible at the right?  Fix it if so.
5520                 */
5521                hs = right - hspace;
5522            } else {
5523                /*
5524                 * Otherwise, float as needed.
5525                 */
5526                if (x - hs < hslack) {
5527                    hs = x - hslack;
5528                }
5529                if (x - hs > hspace - hslack) {
5530                    hs = x - (hspace - hslack);
5531                }
5532            }
5533        }
5534
5535        if (hs != mScrollX || vs != mScrollY) {
5536            if (mScroller == null) {
5537                scrollTo(hs, vs);
5538            } else {
5539                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
5540                int dx = hs - mScrollX;
5541                int dy = vs - mScrollY;
5542
5543                if (duration > ANIMATED_SCROLL_GAP) {
5544                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
5545                    invalidate();
5546                } else {
5547                    if (!mScroller.isFinished()) {
5548                        mScroller.abortAnimation();
5549                    }
5550
5551                    scrollBy(dx, dy);
5552                }
5553
5554                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
5555            }
5556
5557            changed = true;
5558        }
5559
5560        if (isFocused()) {
5561            // This offsets because getInterestingRect() is in terms of
5562            // viewport coordinates, but requestRectangleOnScreen()
5563            // is in terms of content coordinates.
5564
5565            Rect r = new Rect();
5566            getInterestingRect(r, x, top, bottom, line);
5567            r.offset(mScrollX, mScrollY);
5568
5569            if (requestRectangleOnScreen(r)) {
5570                changed = true;
5571            }
5572        }
5573
5574        return changed;
5575    }
5576
5577    /**
5578     * Move the cursor, if needed, so that it is at an offset that is visible
5579     * to the user.  This will not move the cursor if it represents more than
5580     * one character (a selection range).  This will only work if the
5581     * TextView contains spannable text; otherwise it will do nothing.
5582     */
5583    public boolean moveCursorToVisibleOffset() {
5584        if (!(mText instanceof Spannable)) {
5585            return false;
5586        }
5587        int start = Selection.getSelectionStart(mText);
5588        int end = Selection.getSelectionEnd(mText);
5589        if (start != end) {
5590            return false;
5591        }
5592
5593        // First: make sure the line is visible on screen:
5594
5595        int line = mLayout.getLineForOffset(start);
5596
5597        final int top = mLayout.getLineTop(line);
5598        final int bottom = mLayout.getLineTop(line+1);
5599        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
5600        int vslack = (bottom - top) / 2;
5601        if (vslack > vspace / 4)
5602            vslack = vspace / 4;
5603        final int vs = mScrollY;
5604
5605        if (top < (vs+vslack)) {
5606            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
5607        } else if (bottom > (vspace+vs-vslack)) {
5608            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
5609        }
5610
5611        // Next: make sure the character is visible on screen:
5612
5613        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5614        final int hs = mScrollX;
5615        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
5616        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
5617
5618        int newStart = start;
5619        if (newStart < leftChar) {
5620            newStart = leftChar;
5621        } else if (newStart > rightChar) {
5622            newStart = rightChar;
5623        }
5624
5625        if (newStart != start) {
5626            Selection.setSelection((Spannable)mText, newStart);
5627            return true;
5628        }
5629
5630        return false;
5631    }
5632
5633    @Override
5634    public void computeScroll() {
5635        if (mScroller != null) {
5636            if (mScroller.computeScrollOffset()) {
5637                mScrollX = mScroller.getCurrX();
5638                mScrollY = mScroller.getCurrY();
5639                postInvalidate();  // So we draw again
5640            }
5641        }
5642    }
5643
5644    private void getInterestingRect(Rect r, int h, int top, int bottom,
5645                                    int line) {
5646        int paddingTop = getExtendedPaddingTop();
5647        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5648            paddingTop += getVerticalOffset(false);
5649        }
5650        top += paddingTop;
5651        bottom += paddingTop;
5652        h += getCompoundPaddingLeft();
5653
5654        if (line == 0)
5655            top -= getExtendedPaddingTop();
5656        if (line == mLayout.getLineCount() - 1)
5657            bottom += getExtendedPaddingBottom();
5658
5659        r.set(h, top, h+1, bottom);
5660        r.offset(-mScrollX, -mScrollY);
5661    }
5662
5663    @Override
5664    public void debug(int depth) {
5665        super.debug(depth);
5666
5667        String output = debugIndent(depth);
5668        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
5669                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
5670                + "} ";
5671
5672        if (mText != null) {
5673
5674            output += "mText=\"" + mText + "\" ";
5675            if (mLayout != null) {
5676                output += "mLayout width=" + mLayout.getWidth()
5677                        + " height=" + mLayout.getHeight();
5678            }
5679        } else {
5680            output += "mText=NULL";
5681        }
5682        Log.d(VIEW_LOG_TAG, output);
5683    }
5684
5685    /**
5686     * Convenience for {@link Selection#getSelectionStart}.
5687     */
5688    public int getSelectionStart() {
5689        return Selection.getSelectionStart(getText());
5690    }
5691
5692    /**
5693     * Convenience for {@link Selection#getSelectionEnd}.
5694     */
5695    public int getSelectionEnd() {
5696        return Selection.getSelectionEnd(getText());
5697    }
5698
5699    /**
5700     * Return true iff there is a selection inside this text view.
5701     */
5702    public boolean hasSelection() {
5703        return getSelectionStart() != getSelectionEnd();
5704    }
5705
5706    /**
5707     * Sets the properties of this field (lines, horizontally scrolling,
5708     * transformation method) to be for a single-line input.
5709     *
5710     * @attr ref android.R.styleable#TextView_singleLine
5711     */
5712    public void setSingleLine() {
5713        setSingleLine(true);
5714    }
5715
5716    /**
5717     * If true, sets the properties of this field (lines, horizontally
5718     * scrolling, transformation method) to be for a single-line input;
5719     * if false, restores these to the default conditions.
5720     * Note that calling this with false restores default conditions,
5721     * not necessarily those that were in effect prior to calling
5722     * it with true.
5723     *
5724     * @attr ref android.R.styleable#TextView_singleLine
5725     */
5726    @android.view.RemotableViewMethod
5727    public void setSingleLine(boolean singleLine) {
5728        if ((mInputType&EditorInfo.TYPE_MASK_CLASS)
5729                == EditorInfo.TYPE_CLASS_TEXT) {
5730            if (singleLine) {
5731                mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
5732            } else {
5733                mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
5734            }
5735        }
5736        applySingleLine(singleLine, true);
5737    }
5738
5739    private void applySingleLine(boolean singleLine, boolean applyTransformation) {
5740        mSingleLine = singleLine;
5741        if (singleLine) {
5742            setLines(1);
5743            setHorizontallyScrolling(true);
5744            if (applyTransformation) {
5745                setTransformationMethod(SingleLineTransformationMethod.
5746                                        getInstance());
5747            }
5748        } else {
5749            setMaxLines(Integer.MAX_VALUE);
5750            setHorizontallyScrolling(false);
5751            if (applyTransformation) {
5752                setTransformationMethod(null);
5753            }
5754        }
5755    }
5756
5757    /**
5758     * Causes words in the text that are longer than the view is wide
5759     * to be ellipsized instead of broken in the middle.  You may also
5760     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
5761     * to constrain the text toa single line.  Use <code>null</code>
5762     * to turn off ellipsizing.
5763     *
5764     * @attr ref android.R.styleable#TextView_ellipsize
5765     */
5766    public void setEllipsize(TextUtils.TruncateAt where) {
5767        mEllipsize = where;
5768
5769        if (mLayout != null) {
5770            nullLayouts();
5771            requestLayout();
5772            invalidate();
5773        }
5774    }
5775
5776    /**
5777     * Sets how many times to repeat the marquee animation. Only applied if the
5778     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
5779     *
5780     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
5781     */
5782    public void setMarqueeRepeatLimit(int marqueeLimit) {
5783        mMarqueeRepeatLimit = marqueeLimit;
5784    }
5785
5786    /**
5787     * Returns where, if anywhere, words that are longer than the view
5788     * is wide should be ellipsized.
5789     */
5790    @ViewDebug.ExportedProperty
5791    public TextUtils.TruncateAt getEllipsize() {
5792        return mEllipsize;
5793    }
5794
5795    /**
5796     * Set the TextView so that when it takes focus, all the text is
5797     * selected.
5798     *
5799     * @attr ref android.R.styleable#TextView_selectAllOnFocus
5800     */
5801    @android.view.RemotableViewMethod
5802    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
5803        mSelectAllOnFocus = selectAllOnFocus;
5804
5805        if (selectAllOnFocus && !(mText instanceof Spannable)) {
5806            setText(mText, BufferType.SPANNABLE);
5807        }
5808    }
5809
5810    /**
5811     * Set whether the cursor is visible.  The default is true.
5812     *
5813     * @attr ref android.R.styleable#TextView_cursorVisible
5814     */
5815    @android.view.RemotableViewMethod
5816    public void setCursorVisible(boolean visible) {
5817        mCursorVisible = visible;
5818        invalidate();
5819
5820        if (visible) {
5821            makeBlink();
5822        } else if (mBlink != null) {
5823            mBlink.removeCallbacks(mBlink);
5824        }
5825    }
5826
5827    private boolean canMarquee() {
5828        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
5829        return width > 0 && mLayout.getLineWidth(0) > width;
5830    }
5831
5832    private void startMarquee() {
5833        // Do not ellipsize EditText
5834        if (mInput != null) return;
5835
5836        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
5837            return;
5838        }
5839
5840        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
5841                getLineCount() == 1 && canMarquee()) {
5842
5843            if (mMarquee == null) mMarquee = new Marquee(this);
5844            mMarquee.start(mMarqueeRepeatLimit);
5845        }
5846    }
5847
5848    private void stopMarquee() {
5849        if (mMarquee != null && !mMarquee.isStopped()) {
5850            mMarquee.stop();
5851        }
5852    }
5853
5854    private void startStopMarquee(boolean start) {
5855        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5856            if (start) {
5857                startMarquee();
5858            } else {
5859                stopMarquee();
5860            }
5861        }
5862    }
5863
5864    private static final class Marquee extends Handler {
5865        // TODO: Add an option to configure this
5866        private static final float MARQUEE_DELTA_MAX = 0.07f;
5867        private static final int MARQUEE_DELAY = 1200;
5868        private static final int MARQUEE_RESTART_DELAY = 1200;
5869        private static final int MARQUEE_RESOLUTION = 1000 / 30;
5870        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
5871
5872        private static final byte MARQUEE_STOPPED = 0x0;
5873        private static final byte MARQUEE_STARTING = 0x1;
5874        private static final byte MARQUEE_RUNNING = 0x2;
5875
5876        private static final int MESSAGE_START = 0x1;
5877        private static final int MESSAGE_TICK = 0x2;
5878        private static final int MESSAGE_RESTART = 0x3;
5879
5880        private final WeakReference<TextView> mView;
5881
5882        private byte mStatus = MARQUEE_STOPPED;
5883        private float mScrollUnit;
5884        private float mMaxScroll;
5885        float mMaxFadeScroll;
5886        private float mGhostStart;
5887        private float mGhostOffset;
5888        private float mFadeStop;
5889        private int mRepeatLimit;
5890
5891        float mScroll;
5892
5893        Marquee(TextView v) {
5894            final float density = v.getContext().getResources().getDisplayMetrics().density;
5895            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / (float) MARQUEE_RESOLUTION;
5896            mView = new WeakReference<TextView>(v);
5897        }
5898
5899        @Override
5900        public void handleMessage(Message msg) {
5901            switch (msg.what) {
5902                case MESSAGE_START:
5903                    mStatus = MARQUEE_RUNNING;
5904                    tick();
5905                    break;
5906                case MESSAGE_TICK:
5907                    tick();
5908                    break;
5909                case MESSAGE_RESTART:
5910                    if (mStatus == MARQUEE_RUNNING) {
5911                        if (mRepeatLimit >= 0) {
5912                            mRepeatLimit--;
5913                        }
5914                        start(mRepeatLimit);
5915                    }
5916                    break;
5917            }
5918        }
5919
5920        void tick() {
5921            if (mStatus != MARQUEE_RUNNING) {
5922                return;
5923            }
5924
5925            removeMessages(MESSAGE_TICK);
5926
5927            final TextView textView = mView.get();
5928            if (textView != null && (textView.isFocused() || textView.isSelected())) {
5929                mScroll += mScrollUnit;
5930                if (mScroll > mMaxScroll) {
5931                    mScroll = mMaxScroll;
5932                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
5933                } else {
5934                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
5935                }
5936                textView.invalidate();
5937            }
5938        }
5939
5940        void stop() {
5941            mStatus = MARQUEE_STOPPED;
5942            removeMessages(MESSAGE_START);
5943            removeMessages(MESSAGE_RESTART);
5944            removeMessages(MESSAGE_TICK);
5945            resetScroll();
5946        }
5947
5948        private void resetScroll() {
5949            mScroll = 0.0f;
5950            final TextView textView = mView.get();
5951            if (textView != null) textView.invalidate();
5952        }
5953
5954        void start(int repeatLimit) {
5955            if (repeatLimit == 0) {
5956                stop();
5957                return;
5958            }
5959            mRepeatLimit = repeatLimit;
5960            final TextView textView = mView.get();
5961            if (textView != null && textView.mLayout != null) {
5962                mStatus = MARQUEE_STARTING;
5963                mScroll = 0.0f;
5964                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
5965                        textView.getCompoundPaddingRight();
5966                final float lineWidth = textView.mLayout.getLineWidth(0);
5967                final float gap = textWidth / 3.0f;
5968                mGhostStart = lineWidth - textWidth + gap;
5969                mMaxScroll = mGhostStart + textWidth;
5970                mGhostOffset = lineWidth + gap;
5971                mFadeStop = lineWidth + textWidth / 6.0f;
5972                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
5973
5974                textView.invalidate();
5975                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
5976            }
5977        }
5978
5979        float getGhostOffset() {
5980            return mGhostOffset;
5981        }
5982
5983        boolean shouldDrawLeftFade() {
5984            return mScroll <= mFadeStop;
5985        }
5986
5987        boolean shouldDrawGhost() {
5988            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
5989        }
5990
5991        boolean isRunning() {
5992            return mStatus == MARQUEE_RUNNING;
5993        }
5994
5995        boolean isStopped() {
5996            return mStatus == MARQUEE_STOPPED;
5997        }
5998    }
5999
6000    /**
6001     * This method is called when the text is changed, in case any
6002     * subclasses would like to know.
6003     *
6004     * @param text The text the TextView is displaying.
6005     * @param start The offset of the start of the range of the text
6006     *              that was modified.
6007     * @param before The offset of the former end of the range of the
6008     *               text that was modified.  If text was simply inserted,
6009     *               this will be the same as <code>start</code>.
6010     *               If text was replaced with new text or deleted, the
6011     *               length of the old text was <code>before-start</code>.
6012     * @param after The offset of the end of the range of the text
6013     *              that was modified.  If text was simply deleted,
6014     *              this will be the same as <code>start</code>.
6015     *              If text was replaced with new text or inserted,
6016     *              the length of the new text is <code>after-start</code>.
6017     */
6018    protected void onTextChanged(CharSequence text,
6019                                 int start, int before, int after) {
6020    }
6021
6022    /**
6023     * This method is called when the selection has changed, in case any
6024     * subclasses would like to know.
6025     *
6026     * @param selStart The new selection start location.
6027     * @param selEnd The new selection end location.
6028     */
6029    protected void onSelectionChanged(int selStart, int selEnd) {
6030    }
6031
6032    /**
6033     * Adds a TextWatcher to the list of those whose methods are called
6034     * whenever this TextView's text changes.
6035     * <p>
6036     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
6037     * not called after {@link #setText} calls.  Now, doing {@link #setText}
6038     * if there are any text changed listeners forces the buffer type to
6039     * Editable if it would not otherwise be and does call this method.
6040     */
6041    public void addTextChangedListener(TextWatcher watcher) {
6042        if (mListeners == null) {
6043            mListeners = new ArrayList<TextWatcher>();
6044        }
6045
6046        mListeners.add(watcher);
6047    }
6048
6049    /**
6050     * Removes the specified TextWatcher from the list of those whose
6051     * methods are called
6052     * whenever this TextView's text changes.
6053     */
6054    public void removeTextChangedListener(TextWatcher watcher) {
6055        if (mListeners != null) {
6056            int i = mListeners.indexOf(watcher);
6057
6058            if (i >= 0) {
6059                mListeners.remove(i);
6060            }
6061        }
6062    }
6063
6064    private void sendBeforeTextChanged(CharSequence text, int start, int before,
6065                                   int after) {
6066        if (mListeners != null) {
6067            final ArrayList<TextWatcher> list = mListeners;
6068            final int count = list.size();
6069            for (int i = 0; i < count; i++) {
6070                list.get(i).beforeTextChanged(text, start, before, after);
6071            }
6072        }
6073    }
6074
6075    /**
6076     * Not private so it can be called from an inner class without going
6077     * through a thunk.
6078     */
6079    void sendOnTextChanged(CharSequence text, int start, int before,
6080                                   int after) {
6081        if (mListeners != null) {
6082            final ArrayList<TextWatcher> list = mListeners;
6083            final int count = list.size();
6084            for (int i = 0; i < count; i++) {
6085                list.get(i).onTextChanged(text, start, before, after);
6086            }
6087        }
6088    }
6089
6090    /**
6091     * Not private so it can be called from an inner class without going
6092     * through a thunk.
6093     */
6094    void sendAfterTextChanged(Editable text) {
6095        if (mListeners != null) {
6096            final ArrayList<TextWatcher> list = mListeners;
6097            final int count = list.size();
6098            for (int i = 0; i < count; i++) {
6099                list.get(i).afterTextChanged(text);
6100            }
6101        }
6102    }
6103
6104    /**
6105     * Not private so it can be called from an inner class without going
6106     * through a thunk.
6107     */
6108    void handleTextChanged(CharSequence buffer, int start,
6109            int before, int after) {
6110        final InputMethodState ims = mInputMethodState;
6111        if (ims == null || ims.mBatchEditNesting == 0) {
6112            updateAfterEdit();
6113        }
6114        if (ims != null) {
6115            ims.mContentChanged = true;
6116            if (ims.mChangedStart < 0) {
6117                ims.mChangedStart = start;
6118                ims.mChangedEnd = start+before;
6119            } else {
6120                if (ims.mChangedStart > start) ims.mChangedStart = start;
6121                if (ims.mChangedEnd < (start+before)) ims.mChangedEnd = start+before;
6122            }
6123            ims.mChangedDelta += after-before;
6124        }
6125
6126        sendOnTextChanged(buffer, start, before, after);
6127        onTextChanged(buffer, start, before, after);
6128    }
6129
6130    /**
6131     * Not private so it can be called from an inner class without going
6132     * through a thunk.
6133     */
6134    void spanChange(Spanned buf, Object what, int oldStart, int newStart,
6135            int oldEnd, int newEnd) {
6136        // XXX Make the start and end move together if this ends up
6137        // spending too much time invalidating.
6138
6139        boolean selChanged = false;
6140        int newSelStart=-1, newSelEnd=-1;
6141
6142        final InputMethodState ims = mInputMethodState;
6143
6144        if (what == Selection.SELECTION_END) {
6145            mHighlightPathBogus = true;
6146            selChanged = true;
6147            newSelEnd = newStart;
6148
6149            if (!isFocused()) {
6150                mSelectionMoved = true;
6151            }
6152
6153            if (oldStart >= 0 || newStart >= 0) {
6154                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
6155                registerForPreDraw();
6156
6157                if (isFocused()) {
6158                    mShowCursor = SystemClock.uptimeMillis();
6159                    makeBlink();
6160                }
6161            }
6162        }
6163
6164        if (what == Selection.SELECTION_START) {
6165            mHighlightPathBogus = true;
6166            selChanged = true;
6167            newSelStart = newStart;
6168
6169            if (!isFocused()) {
6170                mSelectionMoved = true;
6171            }
6172
6173            if (oldStart >= 0 || newStart >= 0) {
6174                int end = Selection.getSelectionEnd(buf);
6175                invalidateCursor(end, oldStart, newStart);
6176            }
6177        }
6178
6179        if (selChanged) {
6180            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
6181                if (newSelStart < 0) {
6182                    newSelStart = Selection.getSelectionStart(buf);
6183                }
6184                if (newSelEnd < 0) {
6185                    newSelEnd = Selection.getSelectionEnd(buf);
6186                }
6187                onSelectionChanged(newSelStart, newSelEnd);
6188            }
6189        }
6190
6191        if (what instanceof UpdateAppearance ||
6192            what instanceof ParagraphStyle) {
6193            if (ims == null || ims.mBatchEditNesting == 0) {
6194                invalidate();
6195                mHighlightPathBogus = true;
6196                checkForResize();
6197            } else {
6198                ims.mContentChanged = true;
6199            }
6200        }
6201
6202        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
6203            mHighlightPathBogus = true;
6204            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
6205                ims.mSelectionModeChanged = true;
6206            }
6207
6208            if (Selection.getSelectionStart(buf) >= 0) {
6209                if (ims == null || ims.mBatchEditNesting == 0) {
6210                    invalidateCursor();
6211                } else {
6212                    ims.mCursorChanged = true;
6213                }
6214            }
6215        }
6216
6217        if (what instanceof ParcelableSpan) {
6218            // If this is a span that can be sent to a remote process,
6219            // the current extract editor would be interested in it.
6220            if (ims != null && ims.mExtracting != null) {
6221                if (ims.mBatchEditNesting != 0) {
6222                    if (oldStart >= 0) {
6223                        if (ims.mChangedStart > oldStart) {
6224                            ims.mChangedStart = oldStart;
6225                        }
6226                        if (ims.mChangedStart > oldEnd) {
6227                            ims.mChangedStart = oldEnd;
6228                        }
6229                    }
6230                    if (newStart >= 0) {
6231                        if (ims.mChangedStart > newStart) {
6232                            ims.mChangedStart = newStart;
6233                        }
6234                        if (ims.mChangedStart > newEnd) {
6235                            ims.mChangedStart = newEnd;
6236                        }
6237                    }
6238                } else {
6239                    if (DEBUG_EXTRACT) Log.v(TAG, "Span change outside of batch: "
6240                            + oldStart + "-" + oldEnd + ","
6241                            + newStart + "-" + newEnd + what);
6242                    ims.mContentChanged = true;
6243                }
6244            }
6245        }
6246    }
6247
6248    private class ChangeWatcher
6249    implements TextWatcher, SpanWatcher {
6250
6251        private CharSequence mBeforeText;
6252
6253        public void beforeTextChanged(CharSequence buffer, int start,
6254                                      int before, int after) {
6255            if (DEBUG_EXTRACT) Log.v(TAG, "beforeTextChanged start=" + start
6256                    + " before=" + before + " after=" + after + ": " + buffer);
6257
6258            if (AccessibilityManager.getInstance(mContext).isEnabled()) {
6259                mBeforeText = buffer.toString();
6260            }
6261
6262            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
6263        }
6264
6265        public void onTextChanged(CharSequence buffer, int start,
6266                                  int before, int after) {
6267            if (DEBUG_EXTRACT) Log.v(TAG, "onTextChanged start=" + start
6268                    + " before=" + before + " after=" + after + ": " + buffer);
6269            TextView.this.handleTextChanged(buffer, start, before, after);
6270
6271            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
6272                    (isFocused() || isSelected() &&
6273                    isShown())) {
6274                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
6275                mBeforeText = null;
6276            }
6277        }
6278
6279        public void afterTextChanged(Editable buffer) {
6280            if (DEBUG_EXTRACT) Log.v(TAG, "afterTextChanged: " + buffer);
6281            TextView.this.sendAfterTextChanged(buffer);
6282
6283            if (MetaKeyKeyListener.getMetaState(buffer,
6284                                 MetaKeyKeyListener.META_SELECTING) != 0) {
6285                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
6286            }
6287        }
6288
6289        public void onSpanChanged(Spannable buf,
6290                                  Object what, int s, int e, int st, int en) {
6291            if (DEBUG_EXTRACT) Log.v(TAG, "onSpanChanged s=" + s + " e=" + e
6292                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
6293            TextView.this.spanChange(buf, what, s, st, e, en);
6294        }
6295
6296        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
6297            if (DEBUG_EXTRACT) Log.v(TAG, "onSpanAdded s=" + s + " e=" + e
6298                    + " what=" + what + ": " + buf);
6299            TextView.this.spanChange(buf, what, -1, s, -1, e);
6300        }
6301
6302        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
6303            if (DEBUG_EXTRACT) Log.v(TAG, "onSpanRemoved s=" + s + " e=" + e
6304                    + " what=" + what + ": " + buf);
6305            TextView.this.spanChange(buf, what, s, -1, e, -1);
6306        }
6307    }
6308
6309    private void makeBlink() {
6310        if (!mCursorVisible) {
6311            if (mBlink != null) {
6312                mBlink.removeCallbacks(mBlink);
6313            }
6314
6315            return;
6316        }
6317
6318        if (mBlink == null)
6319            mBlink = new Blink(this);
6320
6321        mBlink.removeCallbacks(mBlink);
6322        mBlink.postAtTime(mBlink, mShowCursor + BLINK);
6323    }
6324
6325    @Override
6326    public void onStartTemporaryDetach() {
6327        mTemporaryDetach = true;
6328    }
6329
6330    @Override
6331    public void onFinishTemporaryDetach() {
6332        mTemporaryDetach = false;
6333    }
6334
6335    @Override
6336    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
6337        if (mTemporaryDetach) {
6338            // If we are temporarily in the detach state, then do nothing.
6339            super.onFocusChanged(focused, direction, previouslyFocusedRect);
6340            return;
6341        }
6342
6343        mShowCursor = SystemClock.uptimeMillis();
6344
6345        ensureEndedBatchEdit();
6346
6347        if (focused) {
6348            int selStart = getSelectionStart();
6349            int selEnd = getSelectionEnd();
6350
6351            if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) {
6352                boolean selMoved = mSelectionMoved;
6353
6354                if (mMovement != null) {
6355                    mMovement.onTakeFocus(this, (Spannable) mText, direction);
6356                }
6357
6358                if (mSelectAllOnFocus) {
6359                    Selection.setSelection((Spannable) mText, 0, mText.length());
6360                }
6361
6362                if (selMoved && selStart >= 0 && selEnd >= 0) {
6363                    /*
6364                     * Someone intentionally set the selection, so let them
6365                     * do whatever it is that they wanted to do instead of
6366                     * the default on-focus behavior.  We reset the selection
6367                     * here instead of just skipping the onTakeFocus() call
6368                     * because some movement methods do something other than
6369                     * just setting the selection in theirs and we still
6370                     * need to go through that path.
6371                     */
6372
6373                    Selection.setSelection((Spannable) mText, selStart, selEnd);
6374                }
6375                mTouchFocusSelected = true;
6376            }
6377
6378            mFrozenWithFocus = false;
6379            mSelectionMoved = false;
6380
6381            if (mText instanceof Spannable) {
6382                Spannable sp = (Spannable) mText;
6383                MetaKeyKeyListener.resetMetaState(sp);
6384            }
6385
6386            makeBlink();
6387
6388            if (mError != null) {
6389                showError();
6390            }
6391        } else {
6392            if (mError != null) {
6393                hideError();
6394            }
6395            // Don't leave us in the middle of a batch edit.
6396            onEndBatchEdit();
6397        }
6398
6399        startStopMarquee(focused);
6400
6401        if (mTransformation != null) {
6402            mTransformation.onFocusChanged(this, mText, focused, direction,
6403                                           previouslyFocusedRect);
6404        }
6405
6406        super.onFocusChanged(focused, direction, previouslyFocusedRect);
6407    }
6408
6409    @Override
6410    public void onWindowFocusChanged(boolean hasWindowFocus) {
6411        super.onWindowFocusChanged(hasWindowFocus);
6412
6413        if (hasWindowFocus) {
6414            if (mBlink != null) {
6415                mBlink.uncancel();
6416
6417                if (isFocused()) {
6418                    mShowCursor = SystemClock.uptimeMillis();
6419                    makeBlink();
6420                }
6421            }
6422        } else {
6423            if (mBlink != null) {
6424                mBlink.cancel();
6425            }
6426            // Don't leave us in the middle of a batch edit.
6427            onEndBatchEdit();
6428            if (mInputContentType != null) {
6429                mInputContentType.enterDown = false;
6430            }
6431        }
6432
6433        startStopMarquee(hasWindowFocus);
6434    }
6435
6436    /**
6437     * Use {@link BaseInputConnection#removeComposingSpans
6438     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
6439     * state from this text view.
6440     */
6441    public void clearComposingText() {
6442        if (mText instanceof Spannable) {
6443            BaseInputConnection.removeComposingSpans((Spannable)mText);
6444        }
6445    }
6446
6447    @Override
6448    public void setSelected(boolean selected) {
6449        boolean wasSelected = isSelected();
6450
6451        super.setSelected(selected);
6452
6453        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6454            if (selected) {
6455                startMarquee();
6456            } else {
6457                stopMarquee();
6458            }
6459        }
6460    }
6461
6462    class CommitSelectionReceiver extends ResultReceiver {
6463        int mNewStart;
6464        int mNewEnd;
6465
6466        CommitSelectionReceiver() {
6467            super(getHandler());
6468        }
6469
6470        protected void onReceiveResult(int resultCode, Bundle resultData) {
6471            if (resultCode != InputMethodManager.RESULT_SHOWN) {
6472                Selection.setSelection((Spannable)mText, mNewStart, mNewEnd);
6473            }
6474        }
6475    }
6476
6477    @Override
6478    public boolean onTouchEvent(MotionEvent event) {
6479        final int action = event.getAction();
6480        if (action == MotionEvent.ACTION_DOWN) {
6481            // Reset this state; it will be re-set if super.onTouchEvent
6482            // causes focus to move to the view.
6483            mTouchFocusSelected = false;
6484        }
6485
6486        final boolean superResult = super.onTouchEvent(event);
6487
6488        /*
6489         * Don't handle the release after a long press, because it will
6490         * move the selection away from whatever the menu action was
6491         * trying to affect.
6492         */
6493        if (mEatTouchRelease && action == MotionEvent.ACTION_UP) {
6494            mEatTouchRelease = false;
6495            return superResult;
6496        }
6497
6498        if ((mMovement != null || onCheckIsTextEditor()) && mText instanceof Spannable && mLayout != null) {
6499
6500            if (action == MotionEvent.ACTION_DOWN) {
6501                mScrolled = false;
6502            }
6503
6504            boolean handled = false;
6505
6506            int oldSelStart = Selection.getSelectionStart(mText);
6507            int oldSelEnd = Selection.getSelectionEnd(mText);
6508
6509            if (mMovement != null) {
6510                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
6511            }
6512
6513            if (mText instanceof Editable && onCheckIsTextEditor()) {
6514                if (action == MotionEvent.ACTION_UP && isFocused() && !mScrolled) {
6515                    InputMethodManager imm = (InputMethodManager)
6516                            getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
6517
6518                    // This is going to be gross...  if tapping on the text view
6519                    // causes the IME to be displayed, we don't want the selection
6520                    // to change.  But the selection has already changed, and
6521                    // we won't know right away whether the IME is getting
6522                    // displayed, so...
6523
6524                    int newSelStart = Selection.getSelectionStart(mText);
6525                    int newSelEnd = Selection.getSelectionEnd(mText);
6526                    CommitSelectionReceiver csr = null;
6527                    if (newSelStart != oldSelStart || newSelEnd != oldSelEnd) {
6528                        csr = new CommitSelectionReceiver();
6529                        csr.mNewStart = newSelStart;
6530                        csr.mNewEnd = newSelEnd;
6531                    }
6532
6533                    if (imm.showSoftInput(this, 0, csr) && csr != null) {
6534                        // The IME might get shown -- revert to the old
6535                        // selection, and change to the new when we finally
6536                        // find out of it is okay.
6537                        Selection.setSelection((Spannable)mText, oldSelStart, oldSelEnd);
6538                        handled = true;
6539                    }
6540                }
6541            }
6542
6543            if (handled) {
6544                return true;
6545            }
6546        }
6547
6548        return superResult;
6549    }
6550
6551    /**
6552     * Returns true, only while processing a touch gesture, if the initial
6553     * touch down event caused focus to move to the text view and as a result
6554     * its selection changed.  Only valid while processing the touch gesture
6555     * of interest.
6556     */
6557    public boolean didTouchFocusSelect() {
6558        return mTouchFocusSelected;
6559    }
6560
6561    @Override
6562    public void cancelLongPress() {
6563        super.cancelLongPress();
6564        mScrolled = true;
6565    }
6566
6567    @Override
6568    public boolean onTrackballEvent(MotionEvent event) {
6569        if (mMovement != null && mText instanceof Spannable &&
6570            mLayout != null) {
6571            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
6572                return true;
6573            }
6574        }
6575
6576        return super.onTrackballEvent(event);
6577    }
6578
6579    public void setScroller(Scroller s) {
6580        mScroller = s;
6581    }
6582
6583    private static class Blink extends Handler implements Runnable {
6584        private WeakReference<TextView> mView;
6585        private boolean mCancelled;
6586
6587        public Blink(TextView v) {
6588            mView = new WeakReference<TextView>(v);
6589        }
6590
6591        public void run() {
6592            if (mCancelled) {
6593                return;
6594            }
6595
6596            removeCallbacks(Blink.this);
6597
6598            TextView tv = mView.get();
6599
6600            if (tv != null && tv.isFocused()) {
6601                int st = Selection.getSelectionStart(tv.mText);
6602                int en = Selection.getSelectionEnd(tv.mText);
6603
6604                if (st == en && st >= 0 && en >= 0) {
6605                    if (tv.mLayout != null) {
6606                        tv.invalidateCursorPath();
6607                    }
6608
6609                    postAtTime(this, SystemClock.uptimeMillis() + BLINK);
6610                }
6611            }
6612        }
6613
6614        void cancel() {
6615            if (!mCancelled) {
6616                removeCallbacks(Blink.this);
6617                mCancelled = true;
6618            }
6619        }
6620
6621        void uncancel() {
6622            mCancelled = false;
6623        }
6624    }
6625
6626    @Override
6627    protected float getLeftFadingEdgeStrength() {
6628        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6629            if (mMarquee != null && !mMarquee.isStopped()) {
6630                final Marquee marquee = mMarquee;
6631                if (marquee.shouldDrawLeftFade()) {
6632                    return marquee.mScroll / getHorizontalFadingEdgeLength();
6633                } else {
6634                    return 0.0f;
6635                }
6636            } else if (getLineCount() == 1) {
6637                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
6638                    case Gravity.LEFT:
6639                        return 0.0f;
6640                    case Gravity.RIGHT:
6641                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
6642                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
6643                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
6644                    case Gravity.CENTER_HORIZONTAL:
6645                        return 0.0f;
6646                }
6647            }
6648        }
6649        return super.getLeftFadingEdgeStrength();
6650    }
6651
6652    @Override
6653    protected float getRightFadingEdgeStrength() {
6654        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6655            if (mMarquee != null && !mMarquee.isStopped()) {
6656                final Marquee marquee = mMarquee;
6657                return (marquee.mMaxFadeScroll - marquee.mScroll) / getHorizontalFadingEdgeLength();
6658            } else if (getLineCount() == 1) {
6659                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
6660                    case Gravity.LEFT:
6661                        return (mLayout.getLineRight(0) - mScrollX - (mRight - mLeft) -
6662                                getCompoundPaddingLeft() - getCompoundPaddingRight()) /
6663                                getHorizontalFadingEdgeLength();
6664                    case Gravity.RIGHT:
6665                        return 0.0f;
6666                    case Gravity.CENTER_HORIZONTAL:
6667                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
6668                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
6669                                getHorizontalFadingEdgeLength();
6670                }
6671            }
6672        }
6673        return super.getRightFadingEdgeStrength();
6674    }
6675
6676    @Override
6677    protected int computeHorizontalScrollRange() {
6678        if (mLayout != null)
6679            return mLayout.getWidth();
6680
6681        return super.computeHorizontalScrollRange();
6682    }
6683
6684    @Override
6685    protected int computeVerticalScrollRange() {
6686        if (mLayout != null)
6687            return mLayout.getHeight();
6688
6689        return super.computeVerticalScrollRange();
6690    }
6691
6692    @Override
6693    protected int computeVerticalScrollExtent() {
6694        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
6695    }
6696
6697    public enum BufferType {
6698        NORMAL, SPANNABLE, EDITABLE,
6699    }
6700
6701    /**
6702     * Returns the TextView_textColor attribute from the
6703     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
6704     * from the TextView_textAppearance attribute, if TextView_textColor
6705     * was not set directly.
6706     */
6707    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
6708        ColorStateList colors;
6709        colors = attrs.getColorStateList(com.android.internal.R.styleable.
6710                                         TextView_textColor);
6711
6712        if (colors == null) {
6713            int ap = attrs.getResourceId(com.android.internal.R.styleable.
6714                                         TextView_textAppearance, -1);
6715            if (ap != -1) {
6716                TypedArray appearance;
6717                appearance = context.obtainStyledAttributes(ap,
6718                                            com.android.internal.R.styleable.TextAppearance);
6719                colors = appearance.getColorStateList(com.android.internal.R.styleable.
6720                                                  TextAppearance_textColor);
6721                appearance.recycle();
6722            }
6723        }
6724
6725        return colors;
6726    }
6727
6728    /**
6729     * Returns the default color from the TextView_textColor attribute
6730     * from the AttributeSet, if set, or the default color from the
6731     * TextAppearance_textColor from the TextView_textAppearance attribute,
6732     * if TextView_textColor was not set directly.
6733     */
6734    public static int getTextColor(Context context,
6735                                   TypedArray attrs,
6736                                   int def) {
6737        ColorStateList colors = getTextColors(context, attrs);
6738
6739        if (colors == null) {
6740            return def;
6741        } else {
6742            return colors.getDefaultColor();
6743        }
6744    }
6745
6746    @Override
6747    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
6748        switch (keyCode) {
6749        case KeyEvent.KEYCODE_A:
6750            if (canSelectAll()) {
6751                return onTextContextMenuItem(ID_SELECT_ALL);
6752            }
6753
6754            break;
6755
6756        case KeyEvent.KEYCODE_X:
6757            if (canCut()) {
6758                return onTextContextMenuItem(ID_CUT);
6759            }
6760
6761            break;
6762
6763        case KeyEvent.KEYCODE_C:
6764            if (canCopy()) {
6765                return onTextContextMenuItem(ID_COPY);
6766            }
6767
6768            break;
6769
6770        case KeyEvent.KEYCODE_V:
6771            if (canPaste()) {
6772                return onTextContextMenuItem(ID_PASTE);
6773            }
6774
6775            break;
6776        }
6777
6778        return super.onKeyShortcut(keyCode, event);
6779    }
6780
6781    private boolean canSelectAll() {
6782        if (mText instanceof Spannable && mText.length() != 0 &&
6783            mMovement != null && mMovement.canSelectArbitrarily()) {
6784            return true;
6785        }
6786
6787        return false;
6788    }
6789
6790    private boolean canSelectText() {
6791        if (mText instanceof Spannable && mText.length() != 0 &&
6792            mMovement != null && mMovement.canSelectArbitrarily()) {
6793            return true;
6794        }
6795
6796        return false;
6797    }
6798
6799    private boolean canCut() {
6800        if (mTransformation instanceof PasswordTransformationMethod) {
6801            return false;
6802        }
6803
6804        if (mText.length() > 0 && getSelectionStart() >= 0) {
6805            if (mText instanceof Editable && mInput != null) {
6806                return true;
6807            }
6808        }
6809
6810        return false;
6811    }
6812
6813    private boolean canCopy() {
6814        if (mTransformation instanceof PasswordTransformationMethod) {
6815            return false;
6816        }
6817
6818        if (mText.length() > 0 && getSelectionStart() >= 0) {
6819            return true;
6820        }
6821
6822        return false;
6823    }
6824
6825    private boolean canPaste() {
6826        if (mText instanceof Editable && mInput != null &&
6827            getSelectionStart() >= 0 && getSelectionEnd() >= 0) {
6828            ClipboardManager clip = (ClipboardManager)getContext()
6829                    .getSystemService(Context.CLIPBOARD_SERVICE);
6830            if (clip.hasText()) {
6831                return true;
6832            }
6833        }
6834
6835        return false;
6836    }
6837
6838    /**
6839     * Returns a word to add to the dictionary from the context menu,
6840     * or null if there is no cursor or no word at the cursor.
6841     */
6842    private String getWordForDictionary() {
6843        /*
6844         * Quick return if the input type is one where adding words
6845         * to the dictionary doesn't make any sense.
6846         */
6847        int klass = mInputType & InputType.TYPE_MASK_CLASS;
6848        if (klass == InputType.TYPE_CLASS_NUMBER ||
6849            klass == InputType.TYPE_CLASS_PHONE ||
6850            klass == InputType.TYPE_CLASS_DATETIME) {
6851            return null;
6852        }
6853
6854        int variation = mInputType & InputType.TYPE_MASK_VARIATION;
6855        if (variation == InputType.TYPE_TEXT_VARIATION_URI ||
6856            variation == InputType.TYPE_TEXT_VARIATION_PASSWORD ||
6857            variation == InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD ||
6858            variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS ||
6859            variation == InputType.TYPE_TEXT_VARIATION_FILTER) {
6860            return null;
6861        }
6862
6863        int end = getSelectionEnd();
6864
6865        if (end < 0) {
6866            return null;
6867        }
6868
6869        int start = end;
6870        int len = mText.length();
6871
6872        for (; start > 0; start--) {
6873            char c = mTransformed.charAt(start - 1);
6874            int type = Character.getType(c);
6875
6876            if (c != '\'' &&
6877                type != Character.UPPERCASE_LETTER &&
6878                type != Character.LOWERCASE_LETTER &&
6879                type != Character.TITLECASE_LETTER &&
6880                type != Character.MODIFIER_LETTER &&
6881                type != Character.DECIMAL_DIGIT_NUMBER) {
6882                break;
6883            }
6884        }
6885
6886        for (; end < len; end++) {
6887            char c = mTransformed.charAt(end);
6888            int type = Character.getType(c);
6889
6890            if (c != '\'' &&
6891                type != Character.UPPERCASE_LETTER &&
6892                type != Character.LOWERCASE_LETTER &&
6893                type != Character.TITLECASE_LETTER &&
6894                type != Character.MODIFIER_LETTER &&
6895                type != Character.DECIMAL_DIGIT_NUMBER) {
6896                break;
6897            }
6898        }
6899
6900        if (start == end) {
6901            return null;
6902        }
6903
6904        if (end - start > 48) {
6905            return null;
6906        }
6907
6908        return TextUtils.substring(mTransformed, start, end);
6909    }
6910
6911    @Override
6912    public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
6913        boolean isPassword =
6914            (mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION)) ==
6915            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
6916
6917        if (!isPassword) {
6918            CharSequence text = getText();
6919            if (TextUtils.isEmpty(text)) {
6920                text = getHint();
6921            }
6922            if (!TextUtils.isEmpty(text)) {
6923                if (text.length() > AccessibilityEvent.MAX_TEXT_LENGTH) {
6924                    text = text.subSequence(0, AccessibilityEvent.MAX_TEXT_LENGTH + 1);
6925                }
6926                event.getText().add(text);
6927            }
6928        } else {
6929            event.setPassword(isPassword);
6930        }
6931        return false;
6932    }
6933
6934    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
6935            int fromIndex, int removedCount, int addedCount) {
6936        AccessibilityEvent event =
6937            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
6938        event.setFromIndex(fromIndex);
6939        event.setRemovedCount(removedCount);
6940        event.setAddedCount(addedCount);
6941        event.setBeforeText(beforeText);
6942        sendAccessibilityEventUnchecked(event);
6943    }
6944
6945    @Override
6946    protected void onCreateContextMenu(ContextMenu menu) {
6947        super.onCreateContextMenu(menu);
6948        boolean added = false;
6949
6950        if (!isFocused()) {
6951            if (isFocusable() && mInput != null) {
6952                if (canCopy()) {
6953                    MenuHandler handler = new MenuHandler();
6954                    int name = com.android.internal.R.string.copyAll;
6955
6956                    menu.add(0, ID_COPY, 0, name).
6957                        setOnMenuItemClickListener(handler).
6958                        setAlphabeticShortcut('c');
6959                    menu.setHeaderTitle(com.android.internal.R.string.
6960                        editTextMenuTitle);
6961                }
6962            }
6963
6964            return;
6965        }
6966
6967        MenuHandler handler = new MenuHandler();
6968
6969        if (canSelectAll()) {
6970            menu.add(0, ID_SELECT_ALL, 0,
6971                    com.android.internal.R.string.selectAll).
6972                setOnMenuItemClickListener(handler).
6973                setAlphabeticShortcut('a');
6974            added = true;
6975        }
6976
6977        boolean selection = getSelectionStart() != getSelectionEnd();
6978
6979        if (canSelectText()) {
6980            if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) {
6981                menu.add(0, ID_STOP_SELECTING_TEXT, 0,
6982                        com.android.internal.R.string.stopSelectingText).
6983                    setOnMenuItemClickListener(handler);
6984                added = true;
6985            } else {
6986                menu.add(0, ID_START_SELECTING_TEXT, 0,
6987                        com.android.internal.R.string.selectText).
6988                    setOnMenuItemClickListener(handler);
6989                added = true;
6990            }
6991        }
6992
6993        if (canCut()) {
6994            int name;
6995            if (selection) {
6996                name = com.android.internal.R.string.cut;
6997            } else {
6998                name = com.android.internal.R.string.cutAll;
6999            }
7000
7001            menu.add(0, ID_CUT, 0, name).
7002                setOnMenuItemClickListener(handler).
7003                setAlphabeticShortcut('x');
7004            added = true;
7005        }
7006
7007        if (canCopy()) {
7008            int name;
7009            if (selection) {
7010                name = com.android.internal.R.string.copy;
7011            } else {
7012                name = com.android.internal.R.string.copyAll;
7013            }
7014
7015            menu.add(0, ID_COPY, 0, name).
7016                setOnMenuItemClickListener(handler).
7017                setAlphabeticShortcut('c');
7018            added = true;
7019        }
7020
7021        if (canPaste()) {
7022            menu.add(0, ID_PASTE, 0, com.android.internal.R.string.paste).
7023                    setOnMenuItemClickListener(handler).
7024                    setAlphabeticShortcut('v');
7025            added = true;
7026        }
7027
7028        if (mText instanceof Spanned) {
7029            int selStart = getSelectionStart();
7030            int selEnd = getSelectionEnd();
7031
7032            int min = Math.min(selStart, selEnd);
7033            int max = Math.max(selStart, selEnd);
7034
7035            URLSpan[] urls = ((Spanned) mText).getSpans(min, max,
7036                                                        URLSpan.class);
7037            if (urls.length == 1) {
7038                menu.add(0, ID_COPY_URL, 0,
7039                         com.android.internal.R.string.copyUrl).
7040                            setOnMenuItemClickListener(handler);
7041                added = true;
7042            }
7043        }
7044
7045        if (isInputMethodTarget()) {
7046            menu.add(1, ID_SWITCH_INPUT_METHOD, 0, com.android.internal.R.string.inputMethod).
7047                    setOnMenuItemClickListener(handler);
7048            added = true;
7049        }
7050
7051        String word = getWordForDictionary();
7052        if (word != null) {
7053            menu.add(1, ID_ADD_TO_DICTIONARY, 0,
7054                     getContext().getString(com.android.internal.R.string.addToDictionary, word)).
7055                    setOnMenuItemClickListener(handler);
7056            added = true;
7057
7058        }
7059
7060        if (added) {
7061            menu.setHeaderTitle(com.android.internal.R.string.editTextMenuTitle);
7062        }
7063    }
7064
7065    /**
7066     * Returns whether this text view is a current input method target.  The
7067     * default implementation just checks with {@link InputMethodManager}.
7068     */
7069    public boolean isInputMethodTarget() {
7070        InputMethodManager imm = InputMethodManager.peekInstance();
7071        return imm != null && imm.isActive(this);
7072    }
7073
7074    private static final int ID_SELECT_ALL = android.R.id.selectAll;
7075    private static final int ID_START_SELECTING_TEXT = android.R.id.startSelectingText;
7076    private static final int ID_STOP_SELECTING_TEXT = android.R.id.stopSelectingText;
7077    private static final int ID_CUT = android.R.id.cut;
7078    private static final int ID_COPY = android.R.id.copy;
7079    private static final int ID_PASTE = android.R.id.paste;
7080    private static final int ID_COPY_URL = android.R.id.copyUrl;
7081    private static final int ID_SWITCH_INPUT_METHOD = android.R.id.switchInputMethod;
7082    private static final int ID_ADD_TO_DICTIONARY = android.R.id.addToDictionary;
7083
7084    private class MenuHandler implements MenuItem.OnMenuItemClickListener {
7085        public boolean onMenuItemClick(MenuItem item) {
7086            return onTextContextMenuItem(item.getItemId());
7087        }
7088    }
7089
7090    /**
7091     * Called when a context menu option for the text view is selected.  Currently
7092     * this will be one of: {@link android.R.id#selectAll},
7093     * {@link android.R.id#startSelectingText}, {@link android.R.id#stopSelectingText},
7094     * {@link android.R.id#cut}, {@link android.R.id#copy},
7095     * {@link android.R.id#paste}, {@link android.R.id#copyUrl},
7096     * or {@link android.R.id#switchInputMethod}.
7097     */
7098    public boolean onTextContextMenuItem(int id) {
7099        int selStart = getSelectionStart();
7100        int selEnd = getSelectionEnd();
7101
7102        if (!isFocused()) {
7103            selStart = 0;
7104            selEnd = mText.length();
7105        }
7106
7107        int min = Math.min(selStart, selEnd);
7108        int max = Math.max(selStart, selEnd);
7109
7110        if (min < 0) {
7111            min = 0;
7112        }
7113        if (max < 0) {
7114            max = 0;
7115        }
7116
7117        ClipboardManager clip = (ClipboardManager)getContext()
7118                .getSystemService(Context.CLIPBOARD_SERVICE);
7119
7120        switch (id) {
7121            case ID_SELECT_ALL:
7122                Selection.setSelection((Spannable) mText, 0,
7123                        mText.length());
7124                return true;
7125
7126            case ID_START_SELECTING_TEXT:
7127                MetaKeyKeyListener.startSelecting(this, (Spannable) mText);
7128                return true;
7129
7130            case ID_STOP_SELECTING_TEXT:
7131                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7132                Selection.setSelection((Spannable) mText, getSelectionEnd());
7133                return true;
7134
7135            case ID_CUT:
7136                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7137
7138                if (min == max) {
7139                    min = 0;
7140                    max = mText.length();
7141                }
7142
7143                clip.setText(mTransformed.subSequence(min, max));
7144                ((Editable) mText).delete(min, max);
7145                return true;
7146
7147            case ID_COPY:
7148                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7149
7150                if (min == max) {
7151                    min = 0;
7152                    max = mText.length();
7153                }
7154
7155                clip.setText(mTransformed.subSequence(min, max));
7156                return true;
7157
7158            case ID_PASTE:
7159                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7160
7161                CharSequence paste = clip.getText();
7162
7163                if (paste != null) {
7164                    Selection.setSelection((Spannable) mText, max);
7165                    ((Editable) mText).replace(min, max, paste);
7166                }
7167
7168                return true;
7169
7170            case ID_COPY_URL:
7171                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7172
7173                URLSpan[] urls = ((Spanned) mText).getSpans(min, max,
7174                                                       URLSpan.class);
7175                if (urls.length == 1) {
7176                    clip.setText(urls[0].getURL());
7177                }
7178
7179                return true;
7180
7181            case ID_SWITCH_INPUT_METHOD:
7182                InputMethodManager imm = InputMethodManager.peekInstance();
7183                if (imm != null) {
7184                    imm.showInputMethodPicker();
7185                }
7186                return true;
7187
7188            case ID_ADD_TO_DICTIONARY:
7189                String word = getWordForDictionary();
7190
7191                if (word != null) {
7192                    Intent i = new Intent("com.android.settings.USER_DICTIONARY_INSERT");
7193                    i.putExtra("word", word);
7194                    getContext().startActivity(i);
7195                }
7196
7197                return true;
7198            }
7199
7200        return false;
7201    }
7202
7203    public boolean performLongClick() {
7204        if (super.performLongClick()) {
7205            mEatTouchRelease = true;
7206            return true;
7207        }
7208
7209        return false;
7210    }
7211
7212    @ViewDebug.ExportedProperty
7213    private CharSequence            mText;
7214    private CharSequence            mTransformed;
7215    private BufferType              mBufferType = BufferType.NORMAL;
7216
7217    private int                     mInputType = EditorInfo.TYPE_NULL;
7218    private CharSequence            mHint;
7219    private Layout                  mHintLayout;
7220
7221    private KeyListener             mInput;
7222
7223    private MovementMethod          mMovement;
7224    private TransformationMethod    mTransformation;
7225    private ChangeWatcher           mChangeWatcher;
7226
7227    private ArrayList<TextWatcher>  mListeners = null;
7228
7229    // display attributes
7230    private TextPaint               mTextPaint;
7231    private boolean                 mUserSetTextScaleX;
7232    private Paint                   mHighlightPaint;
7233    private int                     mHighlightColor = 0xFFBBDDFF;
7234    private Layout                  mLayout;
7235
7236    private long                    mShowCursor;
7237    private Blink                   mBlink;
7238    private boolean                 mCursorVisible = true;
7239
7240    private boolean                 mSelectAllOnFocus = false;
7241
7242    private int                     mGravity = Gravity.TOP | Gravity.LEFT;
7243    private boolean                 mHorizontallyScrolling;
7244
7245    private int                     mAutoLinkMask;
7246    private boolean                 mLinksClickable = true;
7247
7248    private float                   mSpacingMult = 1;
7249    private float                   mSpacingAdd = 0;
7250
7251    private static final int        LINES = 1;
7252    private static final int        EMS = LINES;
7253    private static final int        PIXELS = 2;
7254
7255    private int                     mMaximum = Integer.MAX_VALUE;
7256    private int                     mMaxMode = LINES;
7257    private int                     mMinimum = 0;
7258    private int                     mMinMode = LINES;
7259
7260    private int                     mMaxWidth = Integer.MAX_VALUE;
7261    private int                     mMaxWidthMode = PIXELS;
7262    private int                     mMinWidth = 0;
7263    private int                     mMinWidthMode = PIXELS;
7264
7265    private boolean                 mSingleLine;
7266    private int                     mDesiredHeightAtMeasure = -1;
7267    private boolean                 mIncludePad = true;
7268
7269    // tmp primitives, so we don't alloc them on each draw
7270    private Path                    mHighlightPath;
7271    private boolean                 mHighlightPathBogus = true;
7272    private static final RectF      sTempRect = new RectF();
7273
7274    // XXX should be much larger
7275    private static final int        VERY_WIDE = 16384;
7276
7277    private static final int        BLINK = 500;
7278
7279    private static final int ANIMATED_SCROLL_GAP = 250;
7280    private long mLastScroll;
7281    private Scroller mScroller = null;
7282
7283    private BoringLayout.Metrics mBoring;
7284    private BoringLayout.Metrics mHintBoring;
7285
7286    private BoringLayout mSavedLayout, mSavedHintLayout;
7287
7288    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
7289    private InputFilter[] mFilters = NO_FILTERS;
7290    private static final Spanned EMPTY_SPANNED = new SpannedString("");
7291}
7292