TextView.java revision 3c77d39ee8b1c3c5a1b59be65953f73570a42511 
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_textSize
131 * @attr ref android.R.styleable#TextView_textScaleX
132 * @attr ref android.R.styleable#TextView_typeface
133 * @attr ref android.R.styleable#TextView_textStyle
134 * @attr ref android.R.styleable#TextView_cursorVisible
135 * @attr ref android.R.styleable#TextView_maxLines
136 * @attr ref android.R.styleable#TextView_maxHeight
137 * @attr ref android.R.styleable#TextView_lines
138 * @attr ref android.R.styleable#TextView_height
139 * @attr ref android.R.styleable#TextView_minLines
140 * @attr ref android.R.styleable#TextView_minHeight
141 * @attr ref android.R.styleable#TextView_maxEms
142 * @attr ref android.R.styleable#TextView_maxWidth
143 * @attr ref android.R.styleable#TextView_ems
144 * @attr ref android.R.styleable#TextView_width
145 * @attr ref android.R.styleable#TextView_minEms
146 * @attr ref android.R.styleable#TextView_minWidth
147 * @attr ref android.R.styleable#TextView_gravity
148 * @attr ref android.R.styleable#TextView_scrollHorizontally
149 * @attr ref android.R.styleable#TextView_password
150 * @attr ref android.R.styleable#TextView_singleLine
151 * @attr ref android.R.styleable#TextView_selectAllOnFocus
152 * @attr ref android.R.styleable#TextView_includeFontPadding
153 * @attr ref android.R.styleable#TextView_maxLength
154 * @attr ref android.R.styleable#TextView_shadowColor
155 * @attr ref android.R.styleable#TextView_shadowDx
156 * @attr ref android.R.styleable#TextView_shadowDy
157 * @attr ref android.R.styleable#TextView_shadowRadius
158 * @attr ref android.R.styleable#TextView_autoLink
159 * @attr ref android.R.styleable#TextView_linksClickable
160 * @attr ref android.R.styleable#TextView_numeric
161 * @attr ref android.R.styleable#TextView_digits
162 * @attr ref android.R.styleable#TextView_phoneNumber
163 * @attr ref android.R.styleable#TextView_inputMethod
164 * @attr ref android.R.styleable#TextView_capitalize
165 * @attr ref android.R.styleable#TextView_autoText
166 * @attr ref android.R.styleable#TextView_editable
167 * @attr ref android.R.styleable#TextView_drawableTop
168 * @attr ref android.R.styleable#TextView_drawableBottom
169 * @attr ref android.R.styleable#TextView_drawableRight
170 * @attr ref android.R.styleable#TextView_drawableLeft
171 * @attr ref android.R.styleable#TextView_lineSpacingExtra
172 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
173 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
174 */
175@RemoteView
176public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
177    static final String TAG = "TextView";
178    static final boolean DEBUG_EXTRACT = false;
179
180    private static int PRIORITY = 100;
181
182    private ColorStateList mTextColor;
183    private int mCurTextColor;
184    private ColorStateList mHintTextColor;
185    private ColorStateList mLinkTextColor;
186    private int mCurHintTextColor;
187    private boolean mFreezesText;
188    private boolean mFrozenWithFocus;
189    private boolean mTemporaryDetach;
190
191    private boolean mEatTouchRelease = false;
192    private boolean mScrolled = false;
193
194    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
195    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
196
197    private float mShadowRadius, mShadowDx, mShadowDy;
198
199    private static final int PREDRAW_NOT_REGISTERED = 0;
200    private static final int PREDRAW_PENDING = 1;
201    private static final int PREDRAW_DONE = 2;
202    private int mPreDrawState = PREDRAW_NOT_REGISTERED;
203
204    private TextUtils.TruncateAt mEllipsize = null;
205
206    // Enum for the "typeface" XML parameter.
207    // TODO: How can we get this from the XML instead of hardcoding it here?
208    private static final int SANS = 1;
209    private static final int SERIF = 2;
210    private static final int MONOSPACE = 3;
211
212    // Bitfield for the "numeric" XML parameter.
213    // TODO: How can we get this from the XML instead of hardcoding it here?
214    private static final int SIGNED = 2;
215    private static final int DECIMAL = 4;
216
217    class Drawables {
218        final Rect mCompoundRect = new Rect();
219        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight;
220        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight;
221        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight;
222        int mDrawablePadding;
223    }
224    private Drawables mDrawables;
225
226    private CharSequence mError;
227    private boolean mErrorWasChanged;
228    private ErrorPopup mPopup;
229    /**
230     * This flag is set if the TextView tries to display an error before it
231     * is attached to the window (so its position is still unknown).
232     * It causes the error to be shown later, when onAttachedToWindow()
233     * is called.
234     */
235    private boolean mShowErrorAfterAttach;
236
237    private CharWrapper mCharWrapper = null;
238
239    private boolean mSelectionMoved = false;
240    private boolean mTouchFocusSelected = false;
241
242    private Marquee mMarquee;
243    private boolean mRestartMarquee;
244
245    private int mMarqueeRepeatLimit = 3;
246
247    class InputContentType {
248        int imeOptions = EditorInfo.IME_NULL;
249        String privateImeOptions;
250        CharSequence imeActionLabel;
251        int imeActionId;
252        Bundle extras;
253        OnEditorActionListener onEditorActionListener;
254        boolean enterDown;
255    }
256    InputContentType mInputContentType;
257
258    class InputMethodState {
259        Rect mCursorRectInWindow = new Rect();
260        RectF mTmpRectF = new RectF();
261        float[] mTmpOffset = new float[2];
262        ExtractedTextRequest mExtracting;
263        final ExtractedText mTmpExtracted = new ExtractedText();
264        int mBatchEditNesting;
265        boolean mCursorChanged;
266        boolean mSelectionModeChanged;
267        boolean mContentChanged;
268        int mChangedStart, mChangedEnd, mChangedDelta;
269    }
270    InputMethodState mInputMethodState;
271
272    /*
273     * Kick-start the font cache for the zygote process (to pay the cost of
274     * initializing freetype for our default font only once).
275     */
276    static {
277        Paint p = new Paint();
278        p.setAntiAlias(true);
279        // We don't care about the result, just the side-effect of measuring.
280        p.measureText("H");
281    }
282
283    /**
284     * Interface definition for a callback to be invoked when an action is
285     * performed on the editor.
286     */
287    public interface OnEditorActionListener {
288        /**
289         * Called when an action is being performed.
290         *
291         * @param v The view that was clicked.
292         * @param actionId Identifier of the action.  This will be either the
293         * identifier you supplied, or {@link EditorInfo#IME_NULL
294         * EditorInfo.IME_NULL} if being called due to the enter key
295         * being pressed.
296         * @param event If triggered by an enter key, this is the event;
297         * otherwise, this is null.
298         * @return Return true if you have consumed the action, else false.
299         */
300        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
301    }
302
303    public TextView(Context context) {
304        this(context, null);
305    }
306
307    public TextView(Context context,
308                    AttributeSet attrs) {
309        this(context, attrs, com.android.internal.R.attr.textViewStyle);
310    }
311
312    public TextView(Context context,
313                    AttributeSet attrs,
314                    int defStyle) {
315        super(context, attrs, defStyle);
316        mText = "";
317
318        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
319        // If we get the paint from the skin, we should set it to left, since
320        // the layout always wants it to be left.
321        // mTextPaint.setTextAlign(Paint.Align.LEFT);
322
323        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
324
325        mMovement = getDefaultMovementMethod();
326        mTransformation = null;
327
328        TypedArray a =
329            context.obtainStyledAttributes(
330                attrs, com.android.internal.R.styleable.TextView, defStyle, 0);
331
332        int textColorHighlight = 0;
333        ColorStateList textColor = null;
334        ColorStateList textColorHint = null;
335        ColorStateList textColorLink = null;
336        int textSize = 15;
337        int typefaceIndex = -1;
338        int styleIndex = -1;
339
340        /*
341         * Look the appearance up without checking first if it exists because
342         * almost every TextView has one and it greatly simplifies the logic
343         * to be able to parse the appearance first and then let specific tags
344         * for this View override it.
345         */
346        TypedArray appearance = null;
347        int ap = a.getResourceId(com.android.internal.R.styleable.TextView_textAppearance, -1);
348        if (ap != -1) {
349            appearance = context.obtainStyledAttributes(ap,
350                                com.android.internal.R.styleable.
351                                TextAppearance);
352        }
353        if (appearance != null) {
354            int n = appearance.getIndexCount();
355            for (int i = 0; i < n; i++) {
356                int attr = appearance.getIndex(i);
357
358                switch (attr) {
359                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
360                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
361                    break;
362
363                case com.android.internal.R.styleable.TextAppearance_textColor:
364                    textColor = appearance.getColorStateList(attr);
365                    break;
366
367                case com.android.internal.R.styleable.TextAppearance_textColorHint:
368                    textColorHint = appearance.getColorStateList(attr);
369                    break;
370
371                case com.android.internal.R.styleable.TextAppearance_textColorLink:
372                    textColorLink = appearance.getColorStateList(attr);
373                    break;
374
375                case com.android.internal.R.styleable.TextAppearance_textSize:
376                    textSize = appearance.getDimensionPixelSize(attr, textSize);
377                    break;
378
379                case com.android.internal.R.styleable.TextAppearance_typeface:
380                    typefaceIndex = appearance.getInt(attr, -1);
381                    break;
382
383                case com.android.internal.R.styleable.TextAppearance_textStyle:
384                    styleIndex = appearance.getInt(attr, -1);
385                    break;
386                }
387            }
388
389            appearance.recycle();
390        }
391
392        boolean editable = getDefaultEditable();
393        CharSequence inputMethod = null;
394        int numeric = 0;
395        CharSequence digits = null;
396        boolean phone = false;
397        boolean autotext = false;
398        int autocap = -1;
399        int buffertype = 0;
400        boolean selectallonfocus = false;
401        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
402            drawableBottom = null;
403        int drawablePadding = 0;
404        int ellipsize = -1;
405        boolean singleLine = false;
406        int maxlength = -1;
407        CharSequence text = "";
408        int shadowcolor = 0;
409        float dx = 0, dy = 0, r = 0;
410        boolean password = false;
411        int inputType = EditorInfo.TYPE_NULL;
412
413        int n = a.getIndexCount();
414        for (int i = 0; i < n; i++) {
415            int attr = a.getIndex(i);
416
417            switch (attr) {
418            case com.android.internal.R.styleable.TextView_editable:
419                editable = a.getBoolean(attr, editable);
420                break;
421
422            case com.android.internal.R.styleable.TextView_inputMethod:
423                inputMethod = a.getText(attr);
424                break;
425
426            case com.android.internal.R.styleable.TextView_numeric:
427                numeric = a.getInt(attr, numeric);
428                break;
429
430            case com.android.internal.R.styleable.TextView_digits:
431                digits = a.getText(attr);
432                break;
433
434            case com.android.internal.R.styleable.TextView_phoneNumber:
435                phone = a.getBoolean(attr, phone);
436                break;
437
438            case com.android.internal.R.styleable.TextView_autoText:
439                autotext = a.getBoolean(attr, autotext);
440                break;
441
442            case com.android.internal.R.styleable.TextView_capitalize:
443                autocap = a.getInt(attr, autocap);
444                break;
445
446            case com.android.internal.R.styleable.TextView_bufferType:
447                buffertype = a.getInt(attr, buffertype);
448                break;
449
450            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
451                selectallonfocus = a.getBoolean(attr, selectallonfocus);
452                break;
453
454            case com.android.internal.R.styleable.TextView_autoLink:
455                mAutoLinkMask = a.getInt(attr, 0);
456                break;
457
458            case com.android.internal.R.styleable.TextView_linksClickable:
459                mLinksClickable = a.getBoolean(attr, true);
460                break;
461
462            case com.android.internal.R.styleable.TextView_drawableLeft:
463                drawableLeft = a.getDrawable(attr);
464                break;
465
466            case com.android.internal.R.styleable.TextView_drawableTop:
467                drawableTop = a.getDrawable(attr);
468                break;
469
470            case com.android.internal.R.styleable.TextView_drawableRight:
471                drawableRight = a.getDrawable(attr);
472                break;
473
474            case com.android.internal.R.styleable.TextView_drawableBottom:
475                drawableBottom = a.getDrawable(attr);
476                break;
477
478            case com.android.internal.R.styleable.TextView_drawablePadding:
479                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
480                break;
481
482            case com.android.internal.R.styleable.TextView_maxLines:
483                setMaxLines(a.getInt(attr, -1));
484                break;
485
486            case com.android.internal.R.styleable.TextView_maxHeight:
487                setMaxHeight(a.getDimensionPixelSize(attr, -1));
488                break;
489
490            case com.android.internal.R.styleable.TextView_lines:
491                setLines(a.getInt(attr, -1));
492                break;
493
494            case com.android.internal.R.styleable.TextView_height:
495                setHeight(a.getDimensionPixelSize(attr, -1));
496                break;
497
498            case com.android.internal.R.styleable.TextView_minLines:
499                setMinLines(a.getInt(attr, -1));
500                break;
501
502            case com.android.internal.R.styleable.TextView_minHeight:
503                setMinHeight(a.getDimensionPixelSize(attr, -1));
504                break;
505
506            case com.android.internal.R.styleable.TextView_maxEms:
507                setMaxEms(a.getInt(attr, -1));
508                break;
509
510            case com.android.internal.R.styleable.TextView_maxWidth:
511                setMaxWidth(a.getDimensionPixelSize(attr, -1));
512                break;
513
514            case com.android.internal.R.styleable.TextView_ems:
515                setEms(a.getInt(attr, -1));
516                break;
517
518            case com.android.internal.R.styleable.TextView_width:
519                setWidth(a.getDimensionPixelSize(attr, -1));
520                break;
521
522            case com.android.internal.R.styleable.TextView_minEms:
523                setMinEms(a.getInt(attr, -1));
524                break;
525
526            case com.android.internal.R.styleable.TextView_minWidth:
527                setMinWidth(a.getDimensionPixelSize(attr, -1));
528                break;
529
530            case com.android.internal.R.styleable.TextView_gravity:
531                setGravity(a.getInt(attr, -1));
532                break;
533
534            case com.android.internal.R.styleable.TextView_hint:
535                setHint(a.getText(attr));
536                break;
537
538            case com.android.internal.R.styleable.TextView_text:
539                text = a.getText(attr);
540                break;
541
542            case com.android.internal.R.styleable.TextView_scrollHorizontally:
543                if (a.getBoolean(attr, false)) {
544                    setHorizontallyScrolling(true);
545                }
546                break;
547
548            case com.android.internal.R.styleable.TextView_singleLine:
549                singleLine = a.getBoolean(attr, singleLine);
550                break;
551
552            case com.android.internal.R.styleable.TextView_ellipsize:
553                ellipsize = a.getInt(attr, ellipsize);
554                break;
555
556            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
557                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
558                break;
559
560            case com.android.internal.R.styleable.TextView_includeFontPadding:
561                if (!a.getBoolean(attr, true)) {
562                    setIncludeFontPadding(false);
563                }
564                break;
565
566            case com.android.internal.R.styleable.TextView_cursorVisible:
567                if (!a.getBoolean(attr, true)) {
568                    setCursorVisible(false);
569                }
570                break;
571
572            case com.android.internal.R.styleable.TextView_maxLength:
573                maxlength = a.getInt(attr, -1);
574                break;
575
576            case com.android.internal.R.styleable.TextView_textScaleX:
577                setTextScaleX(a.getFloat(attr, 1.0f));
578                break;
579
580            case com.android.internal.R.styleable.TextView_freezesText:
581                mFreezesText = a.getBoolean(attr, false);
582                break;
583
584            case com.android.internal.R.styleable.TextView_shadowColor:
585                shadowcolor = a.getInt(attr, 0);
586                break;
587
588            case com.android.internal.R.styleable.TextView_shadowDx:
589                dx = a.getFloat(attr, 0);
590                break;
591
592            case com.android.internal.R.styleable.TextView_shadowDy:
593                dy = a.getFloat(attr, 0);
594                break;
595
596            case com.android.internal.R.styleable.TextView_shadowRadius:
597                r = a.getFloat(attr, 0);
598                break;
599
600            case com.android.internal.R.styleable.TextView_enabled:
601                setEnabled(a.getBoolean(attr, isEnabled()));
602                break;
603
604            case com.android.internal.R.styleable.TextView_textColorHighlight:
605                textColorHighlight = a.getColor(attr, textColorHighlight);
606                break;
607
608            case com.android.internal.R.styleable.TextView_textColor:
609                textColor = a.getColorStateList(attr);
610                break;
611
612            case com.android.internal.R.styleable.TextView_textColorHint:
613                textColorHint = a.getColorStateList(attr);
614                break;
615
616            case com.android.internal.R.styleable.TextView_textColorLink:
617                textColorLink = a.getColorStateList(attr);
618                break;
619
620            case com.android.internal.R.styleable.TextView_textSize:
621                textSize = a.getDimensionPixelSize(attr, textSize);
622                break;
623
624            case com.android.internal.R.styleable.TextView_typeface:
625                typefaceIndex = a.getInt(attr, typefaceIndex);
626                break;
627
628            case com.android.internal.R.styleable.TextView_textStyle:
629                styleIndex = a.getInt(attr, styleIndex);
630                break;
631
632            case com.android.internal.R.styleable.TextView_password:
633                password = a.getBoolean(attr, password);
634                break;
635
636            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
637                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
638                break;
639
640            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
641                mSpacingMult = a.getFloat(attr, mSpacingMult);
642                break;
643
644            case com.android.internal.R.styleable.TextView_inputType:
645                inputType = a.getInt(attr, mInputType);
646                break;
647
648            case com.android.internal.R.styleable.TextView_imeOptions:
649                if (mInputContentType == null) {
650                    mInputContentType = new InputContentType();
651                }
652                mInputContentType.imeOptions = a.getInt(attr,
653                        mInputContentType.imeOptions);
654                break;
655
656            case com.android.internal.R.styleable.TextView_imeActionLabel:
657                if (mInputContentType == null) {
658                    mInputContentType = new InputContentType();
659                }
660                mInputContentType.imeActionLabel = a.getText(attr);
661                break;
662
663            case com.android.internal.R.styleable.TextView_imeActionId:
664                if (mInputContentType == null) {
665                    mInputContentType = new InputContentType();
666                }
667                mInputContentType.imeActionId = a.getInt(attr,
668                        mInputContentType.imeActionId);
669                break;
670
671            case com.android.internal.R.styleable.TextView_privateImeOptions:
672                setPrivateImeOptions(a.getString(attr));
673                break;
674
675            case com.android.internal.R.styleable.TextView_editorExtras:
676                try {
677                    setInputExtras(a.getResourceId(attr, 0));
678                } catch (XmlPullParserException e) {
679                    Log.w("TextView", "Failure reading input extras", e);
680                } catch (IOException e) {
681                    Log.w("TextView", "Failure reading input extras", e);
682                }
683                break;
684            }
685        }
686        a.recycle();
687
688        BufferType bufferType = BufferType.EDITABLE;
689
690        if ((inputType&(EditorInfo.TYPE_MASK_CLASS
691                |EditorInfo.TYPE_MASK_VARIATION))
692                == (EditorInfo.TYPE_CLASS_TEXT
693                        |EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
694            password = true;
695        }
696
697        if (inputMethod != null) {
698            Class c;
699
700            try {
701                c = Class.forName(inputMethod.toString());
702            } catch (ClassNotFoundException ex) {
703                throw new RuntimeException(ex);
704            }
705
706            try {
707                mInput = (KeyListener) c.newInstance();
708            } catch (InstantiationException ex) {
709                throw new RuntimeException(ex);
710            } catch (IllegalAccessException ex) {
711                throw new RuntimeException(ex);
712            }
713            try {
714                mInputType = inputType != EditorInfo.TYPE_NULL
715                        ? inputType
716                        : mInput.getInputType();
717            } catch (IncompatibleClassChangeError e) {
718                mInputType = EditorInfo.TYPE_CLASS_TEXT;
719            }
720        } else if (digits != null) {
721            mInput = DigitsKeyListener.getInstance(digits.toString());
722            mInputType = inputType;
723        } else if (inputType != EditorInfo.TYPE_NULL) {
724            setInputType(inputType, true);
725            singleLine = (inputType&(EditorInfo.TYPE_MASK_CLASS
726                            | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) !=
727                    (EditorInfo.TYPE_CLASS_TEXT
728                            | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
729        } else if (phone) {
730            mInput = DialerKeyListener.getInstance();
731            mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
732        } else if (numeric != 0) {
733            mInput = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
734                                                   (numeric & DECIMAL) != 0);
735            inputType = EditorInfo.TYPE_CLASS_NUMBER;
736            if ((numeric & SIGNED) != 0) {
737                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
738            }
739            if ((numeric & DECIMAL) != 0) {
740                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
741            }
742            mInputType = inputType;
743        } else if (autotext || autocap != -1) {
744            TextKeyListener.Capitalize cap;
745
746            inputType = EditorInfo.TYPE_CLASS_TEXT;
747            if (!singleLine) {
748                inputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
749            }
750
751            switch (autocap) {
752            case 1:
753                cap = TextKeyListener.Capitalize.SENTENCES;
754                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
755                break;
756
757            case 2:
758                cap = TextKeyListener.Capitalize.WORDS;
759                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
760                break;
761
762            case 3:
763                cap = TextKeyListener.Capitalize.CHARACTERS;
764                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
765                break;
766
767            default:
768                cap = TextKeyListener.Capitalize.NONE;
769                break;
770            }
771
772            mInput = TextKeyListener.getInstance(autotext, cap);
773            mInputType = inputType;
774        } else if (editable) {
775            mInput = TextKeyListener.getInstance();
776            mInputType = EditorInfo.TYPE_CLASS_TEXT;
777        } else {
778            mInput = null;
779
780            switch (buffertype) {
781                case 0:
782                    bufferType = BufferType.NORMAL;
783                    break;
784                case 1:
785                    bufferType = BufferType.SPANNABLE;
786                    break;
787                case 2:
788                    bufferType = BufferType.EDITABLE;
789                    break;
790            }
791        }
792
793        if (password && (mInputType&EditorInfo.TYPE_MASK_CLASS)
794                == EditorInfo.TYPE_CLASS_TEXT) {
795            mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
796                | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD;
797        }
798
799        if (selectallonfocus) {
800            mSelectAllOnFocus = true;
801
802            if (bufferType == BufferType.NORMAL)
803                bufferType = BufferType.SPANNABLE;
804        }
805
806        setCompoundDrawablesWithIntrinsicBounds(
807            drawableLeft, drawableTop, drawableRight, drawableBottom);
808        setCompoundDrawablePadding(drawablePadding);
809
810        if (singleLine) {
811            setSingleLine();
812
813            if (mInput == null && ellipsize < 0) {
814                ellipsize = 3; // END
815            }
816        }
817
818        switch (ellipsize) {
819            case 1:
820                setEllipsize(TextUtils.TruncateAt.START);
821                break;
822            case 2:
823                setEllipsize(TextUtils.TruncateAt.MIDDLE);
824                break;
825            case 3:
826                setEllipsize(TextUtils.TruncateAt.END);
827                break;
828            case 4:
829                setHorizontalFadingEdgeEnabled(true);
830                setEllipsize(TextUtils.TruncateAt.MARQUEE);
831                break;
832        }
833
834        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
835        setHintTextColor(textColorHint);
836        setLinkTextColor(textColorLink);
837        if (textColorHighlight != 0) {
838            setHighlightColor(textColorHighlight);
839        }
840        setRawTextSize(textSize);
841
842        if (password) {
843            setTransformationMethod(PasswordTransformationMethod.getInstance());
844            typefaceIndex = MONOSPACE;
845        } else if ((mInputType&(EditorInfo.TYPE_MASK_CLASS
846                |EditorInfo.TYPE_MASK_VARIATION))
847                == (EditorInfo.TYPE_CLASS_TEXT
848                        |EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
849            typefaceIndex = MONOSPACE;
850        }
851
852        setTypefaceByIndex(typefaceIndex, styleIndex);
853
854        if (shadowcolor != 0) {
855            setShadowLayer(r, dx, dy, shadowcolor);
856        }
857
858        if (maxlength >= 0) {
859            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
860        } else {
861            setFilters(NO_FILTERS);
862        }
863
864        setText(text, bufferType);
865
866        /*
867         * Views are not normally focusable unless specified to be.
868         * However, TextViews that have input or movement methods *are*
869         * focusable by default.
870         */
871        a = context.obtainStyledAttributes(attrs,
872                                           com.android.internal.R.styleable.View,
873                                           defStyle, 0);
874
875        boolean focusable = mMovement != null || mInput != null;
876        boolean clickable = focusable;
877        boolean longClickable = focusable;
878
879        n = a.getIndexCount();
880        for (int i = 0; i < n; i++) {
881            int attr = a.getIndex(i);
882
883            switch (attr) {
884            case com.android.internal.R.styleable.View_focusable:
885                focusable = a.getBoolean(attr, focusable);
886                break;
887
888            case com.android.internal.R.styleable.View_clickable:
889                clickable = a.getBoolean(attr, clickable);
890                break;
891
892            case com.android.internal.R.styleable.View_longClickable:
893                longClickable = a.getBoolean(attr, longClickable);
894                break;
895            }
896        }
897        a.recycle();
898
899        setFocusable(focusable);
900        setClickable(clickable);
901        setLongClickable(longClickable);
902    }
903
904    private void setTypefaceByIndex(int typefaceIndex, int styleIndex) {
905        Typeface tf = null;
906        switch (typefaceIndex) {
907            case SANS:
908                tf = Typeface.SANS_SERIF;
909                break;
910
911            case SERIF:
912                tf = Typeface.SERIF;
913                break;
914
915            case MONOSPACE:
916                tf = Typeface.MONOSPACE;
917                break;
918        }
919
920        setTypeface(tf, styleIndex);
921    }
922
923    /**
924     * Sets the typeface and style in which the text should be displayed,
925     * and turns on the fake bold and italic bits in the Paint if the
926     * Typeface that you provided does not have all the bits in the
927     * style that you specified.
928     *
929     * @attr ref android.R.styleable#TextView_typeface
930     * @attr ref android.R.styleable#TextView_textStyle
931     */
932    public void setTypeface(Typeface tf, int style) {
933        if (style > 0) {
934            if (tf == null) {
935                tf = Typeface.defaultFromStyle(style);
936            } else {
937                tf = Typeface.create(tf, style);
938            }
939
940            setTypeface(tf);
941            // now compute what (if any) algorithmic styling is needed
942            int typefaceStyle = tf != null ? tf.getStyle() : 0;
943            int need = style & ~typefaceStyle;
944            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
945            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
946        } else {
947            mTextPaint.setFakeBoldText(false);
948            mTextPaint.setTextSkewX(0);
949            setTypeface(tf);
950        }
951    }
952
953    /**
954     * Subclasses override this to specify that they have a KeyListener
955     * by default even if not specifically called for in the XML options.
956     */
957    protected boolean getDefaultEditable() {
958        return false;
959    }
960
961    /**
962     * Subclasses override this to specify a default movement method.
963     */
964    protected MovementMethod getDefaultMovementMethod() {
965        return null;
966    }
967
968    /**
969     * Return the text the TextView is displaying. If setText() was called with
970     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
971     * the return value from this method to Spannable or Editable, respectively.
972     *
973     * Note: The content of the return value should not be modified. If you want
974     * a modifiable one, you should make your own copy first.
975     */
976    @ViewDebug.CapturedViewProperty
977    public CharSequence getText() {
978        return mText;
979    }
980
981    /**
982     * Returns the length, in characters, of the text managed by this TextView
983     */
984    public int length() {
985        return mText.length();
986    }
987
988    /**
989     * Return the text the TextView is displaying as an Editable object.  If
990     * the text is not editable, null is returned.
991     *
992     * @see #getText
993     */
994    public Editable getEditableText() {
995        return (mText instanceof Editable) ? (Editable)mText : null;
996    }
997
998    /**
999     * @return the height of one standard line in pixels.  Note that markup
1000     * within the text can cause individual lines to be taller or shorter
1001     * than this height, and the layout may contain additional first-
1002     * or last-line padding.
1003     */
1004    public int getLineHeight() {
1005        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult
1006                          + mSpacingAdd);
1007    }
1008
1009    /**
1010     * @return the Layout that is currently being used to display the text.
1011     * This can be null if the text or width has recently changes.
1012     */
1013    public final Layout getLayout() {
1014        return mLayout;
1015    }
1016
1017    /**
1018     * @return the current key listener for this TextView.
1019     * This will frequently be null for non-EditText TextViews.
1020     */
1021    public final KeyListener getKeyListener() {
1022        return mInput;
1023    }
1024
1025    /**
1026     * Sets the key listener to be used with this TextView.  This can be null
1027     * to disallow user input.  Note that this method has significant and
1028     * subtle interactions with soft keyboards and other input method:
1029     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1030     * for important details.  Calling this method will replace the current
1031     * content type of the text view with the content type returned by the
1032     * key listener.
1033     * <p>
1034     * Be warned that if you want a TextView with a key listener or movement
1035     * method not to be focusable, or if you want a TextView without a
1036     * key listener or movement method to be focusable, you must call
1037     * {@link #setFocusable} again after calling this to get the focusability
1038     * back the way you want it.
1039     *
1040     * @attr ref android.R.styleable#TextView_numeric
1041     * @attr ref android.R.styleable#TextView_digits
1042     * @attr ref android.R.styleable#TextView_phoneNumber
1043     * @attr ref android.R.styleable#TextView_inputMethod
1044     * @attr ref android.R.styleable#TextView_capitalize
1045     * @attr ref android.R.styleable#TextView_autoText
1046     */
1047    public void setKeyListener(KeyListener input) {
1048        setKeyListenerOnly(input);
1049        fixFocusableAndClickableSettings();
1050
1051        if (input != null) {
1052            try {
1053                mInputType = mInput.getInputType();
1054            } catch (IncompatibleClassChangeError e) {
1055                mInputType = EditorInfo.TYPE_CLASS_TEXT;
1056            }
1057            if ((mInputType&EditorInfo.TYPE_MASK_CLASS)
1058                    == EditorInfo.TYPE_CLASS_TEXT) {
1059                if (mSingleLine) {
1060                    mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
1061                } else {
1062                    mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
1063                }
1064            }
1065        } else {
1066            mInputType = EditorInfo.TYPE_NULL;
1067        }
1068
1069        InputMethodManager imm = InputMethodManager.peekInstance();
1070        if (imm != null) imm.restartInput(this);
1071    }
1072
1073    private void setKeyListenerOnly(KeyListener input) {
1074        mInput = input;
1075        if (mInput != null && !(mText instanceof Editable))
1076            setText(mText);
1077
1078        setFilters((Editable) mText, mFilters);
1079    }
1080
1081    /**
1082     * @return the movement method being used for this TextView.
1083     * This will frequently be null for non-EditText TextViews.
1084     */
1085    public final MovementMethod getMovementMethod() {
1086        return mMovement;
1087    }
1088
1089    /**
1090     * Sets the movement method (arrow key handler) to be used for
1091     * this TextView.  This can be null to disallow using the arrow keys
1092     * to move the cursor or scroll the view.
1093     * <p>
1094     * Be warned that if you want a TextView with a key listener or movement
1095     * method not to be focusable, or if you want a TextView without a
1096     * key listener or movement method to be focusable, you must call
1097     * {@link #setFocusable} again after calling this to get the focusability
1098     * back the way you want it.
1099     */
1100    public final void setMovementMethod(MovementMethod movement) {
1101        mMovement = movement;
1102
1103        if (mMovement != null && !(mText instanceof Spannable))
1104            setText(mText);
1105
1106        fixFocusableAndClickableSettings();
1107    }
1108
1109    private void fixFocusableAndClickableSettings() {
1110        if ((mMovement != null) || mInput != null) {
1111            setFocusable(true);
1112            setClickable(true);
1113            setLongClickable(true);
1114        } else {
1115            setFocusable(false);
1116            setClickable(false);
1117            setLongClickable(false);
1118        }
1119    }
1120
1121    /**
1122     * @return the current transformation method for this TextView.
1123     * This will frequently be null except for single-line and password
1124     * fields.
1125     */
1126    public final TransformationMethod getTransformationMethod() {
1127        return mTransformation;
1128    }
1129
1130    /**
1131     * Sets the transformation that is applied to the text that this
1132     * TextView is displaying.
1133     *
1134     * @attr ref android.R.styleable#TextView_password
1135     * @attr ref android.R.styleable#TextView_singleLine
1136     */
1137    public final void setTransformationMethod(TransformationMethod method) {
1138        if (method == mTransformation) {
1139            // Avoid the setText() below if the transformation is
1140            // the same.
1141            return;
1142        }
1143        if (mTransformation != null) {
1144            if (mText instanceof Spannable) {
1145                ((Spannable) mText).removeSpan(mTransformation);
1146            }
1147        }
1148
1149        mTransformation = method;
1150
1151        setText(mText);
1152    }
1153
1154    /**
1155     * Returns the top padding of the view, plus space for the top
1156     * Drawable if any.
1157     */
1158    public int getCompoundPaddingTop() {
1159        final Drawables dr = mDrawables;
1160        if (dr == null || dr.mDrawableTop == null) {
1161            return mPaddingTop;
1162        } else {
1163            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1164        }
1165    }
1166
1167    /**
1168     * Returns the bottom padding of the view, plus space for the bottom
1169     * Drawable if any.
1170     */
1171    public int getCompoundPaddingBottom() {
1172        final Drawables dr = mDrawables;
1173        if (dr == null || dr.mDrawableBottom == null) {
1174            return mPaddingBottom;
1175        } else {
1176            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1177        }
1178    }
1179
1180    /**
1181     * Returns the left padding of the view, plus space for the left
1182     * Drawable if any.
1183     */
1184    public int getCompoundPaddingLeft() {
1185        final Drawables dr = mDrawables;
1186        if (dr == null || dr.mDrawableLeft == null) {
1187            return mPaddingLeft;
1188        } else {
1189            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1190        }
1191    }
1192
1193    /**
1194     * Returns the right padding of the view, plus space for the right
1195     * Drawable if any.
1196     */
1197    public int getCompoundPaddingRight() {
1198        final Drawables dr = mDrawables;
1199        if (dr == null || dr.mDrawableRight == null) {
1200            return mPaddingRight;
1201        } else {
1202            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1203        }
1204    }
1205
1206    /**
1207     * Returns the extended top padding of the view, including both the
1208     * top Drawable if any and any extra space to keep more than maxLines
1209     * of text from showing.  It is only valid to call this after measuring.
1210     */
1211    public int getExtendedPaddingTop() {
1212        if (mMaxMode != LINES) {
1213            return getCompoundPaddingTop();
1214        }
1215
1216        if (mLayout.getLineCount() <= mMaximum) {
1217            return getCompoundPaddingTop();
1218        }
1219
1220        int top = getCompoundPaddingTop();
1221        int bottom = getCompoundPaddingBottom();
1222        int viewht = getHeight() - top - bottom;
1223        int layoutht = mLayout.getLineTop(mMaximum);
1224
1225        if (layoutht >= viewht) {
1226            return top;
1227        }
1228
1229        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1230        if (gravity == Gravity.TOP) {
1231            return top;
1232        } else if (gravity == Gravity.BOTTOM) {
1233            return top + viewht - layoutht;
1234        } else { // (gravity == Gravity.CENTER_VERTICAL)
1235            return top + (viewht - layoutht) / 2;
1236        }
1237    }
1238
1239    /**
1240     * Returns the extended bottom padding of the view, including both the
1241     * bottom Drawable if any and any extra space to keep more than maxLines
1242     * of text from showing.  It is only valid to call this after measuring.
1243     */
1244    public int getExtendedPaddingBottom() {
1245        if (mMaxMode != LINES) {
1246            return getCompoundPaddingBottom();
1247        }
1248
1249        if (mLayout.getLineCount() <= mMaximum) {
1250            return getCompoundPaddingBottom();
1251        }
1252
1253        int top = getCompoundPaddingTop();
1254        int bottom = getCompoundPaddingBottom();
1255        int viewht = getHeight() - top - bottom;
1256        int layoutht = mLayout.getLineTop(mMaximum);
1257
1258        if (layoutht >= viewht) {
1259            return bottom;
1260        }
1261
1262        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1263        if (gravity == Gravity.TOP) {
1264            return bottom + viewht - layoutht;
1265        } else if (gravity == Gravity.BOTTOM) {
1266            return bottom;
1267        } else { // (gravity == Gravity.CENTER_VERTICAL)
1268            return bottom + (viewht - layoutht) / 2;
1269        }
1270    }
1271
1272    /**
1273     * Returns the total left padding of the view, including the left
1274     * Drawable if any.
1275     */
1276    public int getTotalPaddingLeft() {
1277        return getCompoundPaddingLeft();
1278    }
1279
1280    /**
1281     * Returns the total right padding of the view, including the right
1282     * Drawable if any.
1283     */
1284    public int getTotalPaddingRight() {
1285        return getCompoundPaddingRight();
1286    }
1287
1288    /**
1289     * Returns the total top padding of the view, including the top
1290     * Drawable if any, the extra space to keep more than maxLines
1291     * from showing, and the vertical offset for gravity, if any.
1292     */
1293    public int getTotalPaddingTop() {
1294        return getExtendedPaddingTop() + getVerticalOffset(true);
1295    }
1296
1297    /**
1298     * Returns the total bottom padding of the view, including the bottom
1299     * Drawable if any, the extra space to keep more than maxLines
1300     * from showing, and the vertical offset for gravity, if any.
1301     */
1302    public int getTotalPaddingBottom() {
1303        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1304    }
1305
1306    /**
1307     * Sets the Drawables (if any) to appear to the left of, above,
1308     * to the right of, and below the text.  Use null if you do not
1309     * want a Drawable there.  The Drawables must already have had
1310     * {@link Drawable#setBounds} called.
1311     *
1312     * @attr ref android.R.styleable#TextView_drawableLeft
1313     * @attr ref android.R.styleable#TextView_drawableTop
1314     * @attr ref android.R.styleable#TextView_drawableRight
1315     * @attr ref android.R.styleable#TextView_drawableBottom
1316     */
1317    public void setCompoundDrawables(Drawable left, Drawable top,
1318                                     Drawable right, Drawable bottom) {
1319        Drawables dr = mDrawables;
1320
1321        final boolean drawables = left != null || top != null
1322                || right != null || bottom != null;
1323
1324        if (!drawables) {
1325            // Clearing drawables...  can we free the data structure?
1326            if (dr != null) {
1327                if (dr.mDrawablePadding == 0) {
1328                    mDrawables = null;
1329                } else {
1330                    // We need to retain the last set padding, so just clear
1331                    // out all of the fields in the existing structure.
1332                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
1333                    dr.mDrawableLeft = null;
1334                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1335                    dr.mDrawableTop = null;
1336                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
1337                    dr.mDrawableRight = null;
1338                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1339                    dr.mDrawableBottom = null;
1340                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1341                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1342                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1343                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1344                }
1345            }
1346        } else {
1347            if (dr == null) {
1348                mDrawables = dr = new Drawables();
1349            }
1350
1351            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
1352                dr.mDrawableLeft.setCallback(null);
1353            }
1354            dr.mDrawableLeft = left;
1355            if (dr.mDrawableTop != left && dr.mDrawableTop != null) {
1356                dr.mDrawableTop.setCallback(null);
1357            }
1358            dr.mDrawableTop = top;
1359            if (dr.mDrawableRight != left && dr.mDrawableRight != null) {
1360                dr.mDrawableRight.setCallback(null);
1361            }
1362            dr.mDrawableRight = right;
1363            if (dr.mDrawableBottom != left && dr.mDrawableBottom != null) {
1364                dr.mDrawableBottom.setCallback(null);
1365            }
1366            dr.mDrawableBottom = bottom;
1367
1368            final Rect compoundRect = dr.mCompoundRect;
1369            int[] state;
1370
1371            state = getDrawableState();
1372
1373            if (left != null) {
1374                left.setState(state);
1375                left.copyBounds(compoundRect);
1376                left.setCallback(this);
1377                dr.mDrawableSizeLeft = compoundRect.width();
1378                dr.mDrawableHeightLeft = compoundRect.height();
1379            } else {
1380                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1381            }
1382
1383            if (right != null) {
1384                right.setState(state);
1385                right.copyBounds(compoundRect);
1386                right.setCallback(this);
1387                dr.mDrawableSizeRight = compoundRect.width();
1388                dr.mDrawableHeightRight = compoundRect.height();
1389            } else {
1390                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1391            }
1392
1393            if (top != null) {
1394                top.setState(state);
1395                top.copyBounds(compoundRect);
1396                top.setCallback(this);
1397                dr.mDrawableSizeTop = compoundRect.height();
1398                dr.mDrawableWidthTop = compoundRect.width();
1399            } else {
1400                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1401            }
1402
1403            if (bottom != null) {
1404                bottom.setState(state);
1405                bottom.copyBounds(compoundRect);
1406                bottom.setCallback(this);
1407                dr.mDrawableSizeBottom = compoundRect.height();
1408                dr.mDrawableWidthBottom = compoundRect.width();
1409            } else {
1410                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1411            }
1412        }
1413
1414        invalidate();
1415        requestLayout();
1416    }
1417
1418    /**
1419     * Sets the Drawables (if any) to appear to the left of, above,
1420     * to the right of, and below the text.  Use 0 if you do not
1421     * want a Drawable there. The Drawables' bounds will be set to
1422     * their intrinsic bounds.
1423     *
1424     * @param left Resource identifier of the left Drawable.
1425     * @param top Resource identifier of the top Drawable.
1426     * @param right Resource identifier of the right Drawable.
1427     * @param bottom Resource identifier of the bottom Drawable.
1428     *
1429     * @attr ref android.R.styleable#TextView_drawableLeft
1430     * @attr ref android.R.styleable#TextView_drawableTop
1431     * @attr ref android.R.styleable#TextView_drawableRight
1432     * @attr ref android.R.styleable#TextView_drawableBottom
1433     */
1434    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1435        final Resources resources = getContext().getResources();
1436        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null,
1437                top != 0 ? resources.getDrawable(top) : null,
1438                right != 0 ? resources.getDrawable(right) : null,
1439                bottom != 0 ? resources.getDrawable(bottom) : null);
1440    }
1441
1442    /**
1443     * Sets the Drawables (if any) to appear to the left of, above,
1444     * to the right of, and below the text.  Use null if you do not
1445     * want a Drawable there. The Drawables' bounds will be set to
1446     * their intrinsic bounds.
1447     *
1448     * @attr ref android.R.styleable#TextView_drawableLeft
1449     * @attr ref android.R.styleable#TextView_drawableTop
1450     * @attr ref android.R.styleable#TextView_drawableRight
1451     * @attr ref android.R.styleable#TextView_drawableBottom
1452     */
1453    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1454            Drawable right, Drawable bottom) {
1455
1456        if (left != null) {
1457            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1458        }
1459        if (right != null) {
1460            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1461        }
1462        if (top != null) {
1463            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1464        }
1465        if (bottom != null) {
1466            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
1467        }
1468        setCompoundDrawables(left, top, right, bottom);
1469    }
1470
1471    /**
1472     * Returns drawables for the left, top, right, and bottom borders.
1473     */
1474    public Drawable[] getCompoundDrawables() {
1475        final Drawables dr = mDrawables;
1476        if (dr != null) {
1477            return new Drawable[] {
1478                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
1479            };
1480        } else {
1481            return new Drawable[] { null, null, null, null };
1482        }
1483    }
1484
1485    /**
1486     * Sets the size of the padding between the compound drawables and
1487     * the text.
1488     *
1489     * @attr ref android.R.styleable#TextView_drawablePadding
1490     */
1491    public void setCompoundDrawablePadding(int pad) {
1492        Drawables dr = mDrawables;
1493        if (pad == 0) {
1494            if (dr != null) {
1495                dr.mDrawablePadding = pad;
1496            }
1497        } else {
1498            if (dr == null) {
1499                mDrawables = dr = new Drawables();
1500            }
1501            dr.mDrawablePadding = pad;
1502        }
1503
1504        invalidate();
1505        requestLayout();
1506    }
1507
1508    /**
1509     * Returns the padding between the compound drawables and the text.
1510     */
1511    public int getCompoundDrawablePadding() {
1512        final Drawables dr = mDrawables;
1513        return dr != null ? dr.mDrawablePadding : 0;
1514    }
1515
1516    @Override
1517    public void setPadding(int left, int top, int right, int bottom) {
1518        if (left != mPaddingLeft ||
1519            right != mPaddingRight ||
1520            top != mPaddingTop ||
1521            bottom != mPaddingBottom) {
1522            nullLayouts();
1523        }
1524
1525        // the super call will requestLayout()
1526        super.setPadding(left, top, right, bottom);
1527        invalidate();
1528    }
1529
1530    /**
1531     * Gets the autolink mask of the text.  See {@link
1532     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1533     * possible values.
1534     *
1535     * @attr ref android.R.styleable#TextView_autoLink
1536     */
1537    public final int getAutoLinkMask() {
1538        return mAutoLinkMask;
1539    }
1540
1541    /**
1542     * Sets the text color, size, style, hint color, and highlight color
1543     * from the specified TextAppearance resource.
1544     */
1545    public void setTextAppearance(Context context, int resid) {
1546        TypedArray appearance =
1547            context.obtainStyledAttributes(resid,
1548                                           com.android.internal.R.styleable.TextAppearance);
1549
1550        int color;
1551        ColorStateList colors;
1552        int ts;
1553
1554        color = appearance.getColor(com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
1555        if (color != 0) {
1556            setHighlightColor(color);
1557        }
1558
1559        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1560                                              TextAppearance_textColor);
1561        if (colors != null) {
1562            setTextColor(colors);
1563        }
1564
1565        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
1566                                              TextAppearance_textSize, 0);
1567        if (ts != 0) {
1568            setRawTextSize(ts);
1569        }
1570
1571        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1572                                              TextAppearance_textColorHint);
1573        if (colors != null) {
1574            setHintTextColor(colors);
1575        }
1576
1577        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1578                                              TextAppearance_textColorLink);
1579        if (colors != null) {
1580            setLinkTextColor(colors);
1581        }
1582
1583        int typefaceIndex, styleIndex;
1584
1585        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
1586                                          TextAppearance_typeface, -1);
1587        styleIndex = appearance.getInt(com.android.internal.R.styleable.
1588                                       TextAppearance_textStyle, -1);
1589
1590        setTypefaceByIndex(typefaceIndex, styleIndex);
1591        appearance.recycle();
1592    }
1593
1594    /**
1595     * @return the size (in pixels) of the default text size in this TextView.
1596     */
1597    public float getTextSize() {
1598        return mTextPaint.getTextSize();
1599    }
1600
1601    /**
1602     * Set the default text size to the given value, interpreted as "scaled
1603     * pixel" units.  This size is adjusted based on the current density and
1604     * user font size preference.
1605     *
1606     * @param size The scaled pixel size.
1607     *
1608     * @attr ref android.R.styleable#TextView_textSize
1609     */
1610    @android.view.RemotableViewMethod
1611    public void setTextSize(float size) {
1612        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
1613    }
1614
1615    /**
1616     * Set the default text size to a given unit and value.  See {@link
1617     * TypedValue} for the possible dimension units.
1618     *
1619     * @param unit The desired dimension unit.
1620     * @param size The desired size in the given units.
1621     *
1622     * @attr ref android.R.styleable#TextView_textSize
1623     */
1624    public void setTextSize(int unit, float size) {
1625        Context c = getContext();
1626        Resources r;
1627
1628        if (c == null)
1629            r = Resources.getSystem();
1630        else
1631            r = c.getResources();
1632
1633        setRawTextSize(TypedValue.applyDimension(
1634            unit, size, r.getDisplayMetrics()));
1635    }
1636
1637    private void setRawTextSize(float size) {
1638        if (size != mTextPaint.getTextSize()) {
1639            mTextPaint.setTextSize(size);
1640
1641            if (mLayout != null) {
1642                nullLayouts();
1643                requestLayout();
1644                invalidate();
1645            }
1646        }
1647    }
1648
1649    /**
1650     * @return the extent by which text is currently being stretched
1651     * horizontally.  This will usually be 1.
1652     */
1653    public float getTextScaleX() {
1654        return mTextPaint.getTextScaleX();
1655    }
1656
1657    /**
1658     * Sets the extent by which text should be stretched horizontally.
1659     *
1660     * @attr ref android.R.styleable#TextView_textScaleX
1661     */
1662    @android.view.RemotableViewMethod
1663    public void setTextScaleX(float size) {
1664        if (size != mTextPaint.getTextScaleX()) {
1665            mUserSetTextScaleX = true;
1666            mTextPaint.setTextScaleX(size);
1667
1668            if (mLayout != null) {
1669                nullLayouts();
1670                requestLayout();
1671                invalidate();
1672            }
1673        }
1674    }
1675
1676    /**
1677     * Sets the typeface and style in which the text should be displayed.
1678     * Note that not all Typeface families actually have bold and italic
1679     * variants, so you may need to use
1680     * {@link #setTypeface(Typeface, int)} to get the appearance
1681     * that you actually want.
1682     *
1683     * @attr ref android.R.styleable#TextView_typeface
1684     * @attr ref android.R.styleable#TextView_textStyle
1685     */
1686    public void setTypeface(Typeface tf) {
1687        if (mTextPaint.getTypeface() != tf) {
1688            mTextPaint.setTypeface(tf);
1689
1690            if (mLayout != null) {
1691                nullLayouts();
1692                requestLayout();
1693                invalidate();
1694            }
1695        }
1696    }
1697
1698    /**
1699     * @return the current typeface and style in which the text is being
1700     * displayed.
1701     */
1702    public Typeface getTypeface() {
1703        return mTextPaint.getTypeface();
1704    }
1705
1706    /**
1707     * Sets the text color for all the states (normal, selected,
1708     * focused) to be this color.
1709     *
1710     * @attr ref android.R.styleable#TextView_textColor
1711     */
1712    @android.view.RemotableViewMethod
1713    public void setTextColor(int color) {
1714        mTextColor = ColorStateList.valueOf(color);
1715        updateTextColors();
1716    }
1717
1718    /**
1719     * Sets the text color.
1720     *
1721     * @attr ref android.R.styleable#TextView_textColor
1722     */
1723    public void setTextColor(ColorStateList colors) {
1724        if (colors == null) {
1725            throw new NullPointerException();
1726        }
1727
1728        mTextColor = colors;
1729        updateTextColors();
1730    }
1731
1732    /**
1733     * Return the set of text colors.
1734     *
1735     * @return Returns the set of text colors.
1736     */
1737    public final ColorStateList getTextColors() {
1738        return mTextColor;
1739    }
1740
1741    /**
1742     * <p>Return the current color selected for normal text.</p>
1743     *
1744     * @return Returns the current text color.
1745     */
1746    public final int getCurrentTextColor() {
1747        return mCurTextColor;
1748    }
1749
1750    /**
1751     * Sets the color used to display the selection highlight.
1752     *
1753     * @attr ref android.R.styleable#TextView_textColorHighlight
1754     */
1755    @android.view.RemotableViewMethod
1756    public void setHighlightColor(int color) {
1757        if (mHighlightColor != color) {
1758            mHighlightColor = color;
1759            invalidate();
1760        }
1761    }
1762
1763    /**
1764     * Gives the text a shadow of the specified radius and color, the specified
1765     * distance from its normal position.
1766     *
1767     * @attr ref android.R.styleable#TextView_shadowColor
1768     * @attr ref android.R.styleable#TextView_shadowDx
1769     * @attr ref android.R.styleable#TextView_shadowDy
1770     * @attr ref android.R.styleable#TextView_shadowRadius
1771     */
1772    public void setShadowLayer(float radius, float dx, float dy, int color) {
1773        mTextPaint.setShadowLayer(radius, dx, dy, color);
1774
1775        mShadowRadius = radius;
1776        mShadowDx = dx;
1777        mShadowDy = dy;
1778
1779        invalidate();
1780    }
1781
1782    /**
1783     * @return the base paint used for the text.  Please use this only to
1784     * consult the Paint's properties and not to change them.
1785     */
1786    public TextPaint getPaint() {
1787        return mTextPaint;
1788    }
1789
1790    /**
1791     * Sets the autolink mask of the text.  See {@link
1792     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1793     * possible values.
1794     *
1795     * @attr ref android.R.styleable#TextView_autoLink
1796     */
1797    @android.view.RemotableViewMethod
1798    public final void setAutoLinkMask(int mask) {
1799        mAutoLinkMask = mask;
1800    }
1801
1802    /**
1803     * Sets whether the movement method will automatically be set to
1804     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1805     * set to nonzero and links are detected in {@link #setText}.
1806     * The default is true.
1807     *
1808     * @attr ref android.R.styleable#TextView_linksClickable
1809     */
1810    @android.view.RemotableViewMethod
1811    public final void setLinksClickable(boolean whether) {
1812        mLinksClickable = whether;
1813    }
1814
1815    /**
1816     * Returns 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    public final boolean getLinksClickable() {
1824        return mLinksClickable;
1825    }
1826
1827    /**
1828     * Returns the list of URLSpans attached to the text
1829     * (by {@link Linkify} or otherwise) if any.  You can call
1830     * {@link URLSpan#getURL} on them to find where they link to
1831     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
1832     * to find the region of the text they are attached to.
1833     */
1834    public URLSpan[] getUrls() {
1835        if (mText instanceof Spanned) {
1836            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
1837        } else {
1838            return new URLSpan[0];
1839        }
1840    }
1841
1842    /**
1843     * Sets the color of the hint text.
1844     *
1845     * @attr ref android.R.styleable#TextView_textColorHint
1846     */
1847    @android.view.RemotableViewMethod
1848    public final void setHintTextColor(int color) {
1849        mHintTextColor = ColorStateList.valueOf(color);
1850        updateTextColors();
1851    }
1852
1853    /**
1854     * Sets the color of the hint text.
1855     *
1856     * @attr ref android.R.styleable#TextView_textColorHint
1857     */
1858    public final void setHintTextColor(ColorStateList colors) {
1859        mHintTextColor = colors;
1860        updateTextColors();
1861    }
1862
1863    /**
1864     * <p>Return the color used to paint the hint text.</p>
1865     *
1866     * @return Returns the list of hint text colors.
1867     */
1868    public final ColorStateList getHintTextColors() {
1869        return mHintTextColor;
1870    }
1871
1872    /**
1873     * <p>Return the current color selected to paint the hint text.</p>
1874     *
1875     * @return Returns the current hint text color.
1876     */
1877    public final int getCurrentHintTextColor() {
1878        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
1879    }
1880
1881    /**
1882     * Sets the color of links in the text.
1883     *
1884     * @attr ref android.R.styleable#TextView_textColorLink
1885     */
1886    @android.view.RemotableViewMethod
1887    public final void setLinkTextColor(int color) {
1888        mLinkTextColor = ColorStateList.valueOf(color);
1889        updateTextColors();
1890    }
1891
1892    /**
1893     * Sets the color of links in the text.
1894     *
1895     * @attr ref android.R.styleable#TextView_textColorLink
1896     */
1897    public final void setLinkTextColor(ColorStateList colors) {
1898        mLinkTextColor = colors;
1899        updateTextColors();
1900    }
1901
1902    /**
1903     * <p>Returns the color used to paint links in the text.</p>
1904     *
1905     * @return Returns the list of link text colors.
1906     */
1907    public final ColorStateList getLinkTextColors() {
1908        return mLinkTextColor;
1909    }
1910
1911    /**
1912     * Sets the horizontal alignment of the text and the
1913     * vertical gravity that will be used when there is extra space
1914     * in the TextView beyond what is required for the text itself.
1915     *
1916     * @see android.view.Gravity
1917     * @attr ref android.R.styleable#TextView_gravity
1918     */
1919    public void setGravity(int gravity) {
1920        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == 0) {
1921            gravity |= Gravity.LEFT;
1922        }
1923        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
1924            gravity |= Gravity.TOP;
1925        }
1926
1927        boolean newLayout = false;
1928
1929        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) !=
1930            (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK)) {
1931            newLayout = true;
1932        }
1933
1934        if (gravity != mGravity) {
1935            invalidate();
1936        }
1937
1938        mGravity = gravity;
1939
1940        if (mLayout != null && newLayout) {
1941            // XXX this is heavy-handed because no actual content changes.
1942            int want = mLayout.getWidth();
1943            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
1944
1945            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
1946                          mRight - mLeft - getCompoundPaddingLeft() -
1947                          getCompoundPaddingRight(), true);
1948        }
1949    }
1950
1951    /**
1952     * Returns the horizontal and vertical alignment of this TextView.
1953     *
1954     * @see android.view.Gravity
1955     * @attr ref android.R.styleable#TextView_gravity
1956     */
1957    public int getGravity() {
1958        return mGravity;
1959    }
1960
1961    /**
1962     * @return the flags on the Paint being used to display the text.
1963     * @see Paint#getFlags
1964     */
1965    public int getPaintFlags() {
1966        return mTextPaint.getFlags();
1967    }
1968
1969    /**
1970     * Sets flags on the Paint being used to display the text and
1971     * reflows the text if they are different from the old flags.
1972     * @see Paint#setFlags
1973     */
1974    @android.view.RemotableViewMethod
1975    public void setPaintFlags(int flags) {
1976        if (mTextPaint.getFlags() != flags) {
1977            mTextPaint.setFlags(flags);
1978
1979            if (mLayout != null) {
1980                nullLayouts();
1981                requestLayout();
1982                invalidate();
1983            }
1984        }
1985    }
1986
1987    /**
1988     * Sets whether the text should be allowed to be wider than the
1989     * View is.  If false, it will be wrapped to the width of the View.
1990     *
1991     * @attr ref android.R.styleable#TextView_scrollHorizontally
1992     */
1993    public void setHorizontallyScrolling(boolean whether) {
1994        mHorizontallyScrolling = whether;
1995
1996        if (mLayout != null) {
1997            nullLayouts();
1998            requestLayout();
1999            invalidate();
2000        }
2001    }
2002
2003    /**
2004     * Makes the TextView at least this many lines tall
2005     *
2006     * @attr ref android.R.styleable#TextView_minLines
2007     */
2008    @android.view.RemotableViewMethod
2009    public void setMinLines(int minlines) {
2010        mMinimum = minlines;
2011        mMinMode = LINES;
2012
2013        requestLayout();
2014        invalidate();
2015    }
2016
2017    /**
2018     * Makes the TextView at least this many pixels tall
2019     *
2020     * @attr ref android.R.styleable#TextView_minHeight
2021     */
2022    @android.view.RemotableViewMethod
2023    public void setMinHeight(int minHeight) {
2024        mMinimum = minHeight;
2025        mMinMode = PIXELS;
2026
2027        requestLayout();
2028        invalidate();
2029    }
2030
2031    /**
2032     * Makes the TextView at most this many lines tall
2033     *
2034     * @attr ref android.R.styleable#TextView_maxLines
2035     */
2036    @android.view.RemotableViewMethod
2037    public void setMaxLines(int maxlines) {
2038        mMaximum = maxlines;
2039        mMaxMode = LINES;
2040
2041        requestLayout();
2042        invalidate();
2043    }
2044
2045    /**
2046     * Makes the TextView at most this many pixels tall
2047     *
2048     * @attr ref android.R.styleable#TextView_maxHeight
2049     */
2050    @android.view.RemotableViewMethod
2051    public void setMaxHeight(int maxHeight) {
2052        mMaximum = maxHeight;
2053        mMaxMode = PIXELS;
2054
2055        requestLayout();
2056        invalidate();
2057    }
2058
2059    /**
2060     * Makes the TextView exactly this many lines tall
2061     *
2062     * @attr ref android.R.styleable#TextView_lines
2063     */
2064    @android.view.RemotableViewMethod
2065    public void setLines(int lines) {
2066        mMaximum = mMinimum = lines;
2067        mMaxMode = mMinMode = LINES;
2068
2069        requestLayout();
2070        invalidate();
2071    }
2072
2073    /**
2074     * Makes the TextView exactly this many pixels tall.
2075     * You could do the same thing by specifying this number in the
2076     * LayoutParams.
2077     *
2078     * @attr ref android.R.styleable#TextView_height
2079     */
2080    @android.view.RemotableViewMethod
2081    public void setHeight(int pixels) {
2082        mMaximum = mMinimum = pixels;
2083        mMaxMode = mMinMode = PIXELS;
2084
2085        requestLayout();
2086        invalidate();
2087    }
2088
2089    /**
2090     * Makes the TextView at least this many ems wide
2091     *
2092     * @attr ref android.R.styleable#TextView_minEms
2093     */
2094    @android.view.RemotableViewMethod
2095    public void setMinEms(int minems) {
2096        mMinWidth = minems;
2097        mMinWidthMode = EMS;
2098
2099        requestLayout();
2100        invalidate();
2101    }
2102
2103    /**
2104     * Makes the TextView at least this many pixels wide
2105     *
2106     * @attr ref android.R.styleable#TextView_minWidth
2107     */
2108    @android.view.RemotableViewMethod
2109    public void setMinWidth(int minpixels) {
2110        mMinWidth = minpixels;
2111        mMinWidthMode = PIXELS;
2112
2113        requestLayout();
2114        invalidate();
2115    }
2116
2117    /**
2118     * Makes the TextView at most this many ems wide
2119     *
2120     * @attr ref android.R.styleable#TextView_maxEms
2121     */
2122    @android.view.RemotableViewMethod
2123    public void setMaxEms(int maxems) {
2124        mMaxWidth = maxems;
2125        mMaxWidthMode = EMS;
2126
2127        requestLayout();
2128        invalidate();
2129    }
2130
2131    /**
2132     * Makes the TextView at most this many pixels wide
2133     *
2134     * @attr ref android.R.styleable#TextView_maxWidth
2135     */
2136    @android.view.RemotableViewMethod
2137    public void setMaxWidth(int maxpixels) {
2138        mMaxWidth = maxpixels;
2139        mMaxWidthMode = PIXELS;
2140
2141        requestLayout();
2142        invalidate();
2143    }
2144
2145    /**
2146     * Makes the TextView exactly this many ems wide
2147     *
2148     * @attr ref android.R.styleable#TextView_ems
2149     */
2150    @android.view.RemotableViewMethod
2151    public void setEms(int ems) {
2152        mMaxWidth = mMinWidth = ems;
2153        mMaxWidthMode = mMinWidthMode = EMS;
2154
2155        requestLayout();
2156        invalidate();
2157    }
2158
2159    /**
2160     * Makes the TextView exactly this many pixels wide.
2161     * You could do the same thing by specifying this number in the
2162     * LayoutParams.
2163     *
2164     * @attr ref android.R.styleable#TextView_width
2165     */
2166    @android.view.RemotableViewMethod
2167    public void setWidth(int pixels) {
2168        mMaxWidth = mMinWidth = pixels;
2169        mMaxWidthMode = mMinWidthMode = PIXELS;
2170
2171        requestLayout();
2172        invalidate();
2173    }
2174
2175
2176    /**
2177     * Sets line spacing for this TextView.  Each line will have its height
2178     * multiplied by <code>mult</code> and have <code>add</code> added to it.
2179     *
2180     * @attr ref android.R.styleable#TextView_lineSpacingExtra
2181     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
2182     */
2183    public void setLineSpacing(float add, float mult) {
2184        mSpacingMult = mult;
2185        mSpacingAdd = add;
2186
2187        if (mLayout != null) {
2188            nullLayouts();
2189            requestLayout();
2190            invalidate();
2191        }
2192    }
2193
2194    /**
2195     * Convenience method: Append the specified text to the TextView's
2196     * display buffer, upgrading it to BufferType.EDITABLE if it was
2197     * not already editable.
2198     */
2199    public final void append(CharSequence text) {
2200        append(text, 0, text.length());
2201    }
2202
2203    /**
2204     * Convenience method: Append the specified text slice to the TextView's
2205     * display buffer, upgrading it to BufferType.EDITABLE if it was
2206     * not already editable.
2207     */
2208    public void append(CharSequence text, int start, int end) {
2209        if (!(mText instanceof Editable)) {
2210            setText(mText, BufferType.EDITABLE);
2211        }
2212
2213        ((Editable) mText).append(text, start, end);
2214    }
2215
2216    private void updateTextColors() {
2217        boolean inval = false;
2218        int color = mTextColor.getColorForState(getDrawableState(), 0);
2219        if (color != mCurTextColor) {
2220            mCurTextColor = color;
2221            inval = true;
2222        }
2223        if (mLinkTextColor != null) {
2224            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
2225            if (color != mTextPaint.linkColor) {
2226                mTextPaint.linkColor = color;
2227                inval = true;
2228            }
2229        }
2230        if (mHintTextColor != null) {
2231            color = mHintTextColor.getColorForState(getDrawableState(), 0);
2232            if (color != mCurHintTextColor && mText.length() == 0) {
2233                mCurHintTextColor = color;
2234                inval = true;
2235            }
2236        }
2237        if (inval) {
2238            invalidate();
2239        }
2240    }
2241
2242    @Override
2243    protected void drawableStateChanged() {
2244        super.drawableStateChanged();
2245        if (mTextColor != null && mTextColor.isStateful()
2246                || (mHintTextColor != null && mHintTextColor.isStateful())
2247                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
2248            updateTextColors();
2249        }
2250
2251        final Drawables dr = mDrawables;
2252        if (dr != null) {
2253            int[] state = getDrawableState();
2254            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
2255                dr.mDrawableTop.setState(state);
2256            }
2257            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
2258                dr.mDrawableBottom.setState(state);
2259            }
2260            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
2261                dr.mDrawableLeft.setState(state);
2262            }
2263            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
2264                dr.mDrawableRight.setState(state);
2265            }
2266        }
2267    }
2268
2269    /**
2270     * User interface state that is stored by TextView for implementing
2271     * {@link View#onSaveInstanceState}.
2272     */
2273    public static class SavedState extends BaseSavedState {
2274        int selStart;
2275        int selEnd;
2276        CharSequence text;
2277        boolean frozenWithFocus;
2278        CharSequence error;
2279
2280        SavedState(Parcelable superState) {
2281            super(superState);
2282        }
2283
2284        @Override
2285        public void writeToParcel(Parcel out, int flags) {
2286            super.writeToParcel(out, flags);
2287            out.writeInt(selStart);
2288            out.writeInt(selEnd);
2289            out.writeInt(frozenWithFocus ? 1 : 0);
2290            TextUtils.writeToParcel(text, out, flags);
2291
2292            if (error == null) {
2293                out.writeInt(0);
2294            } else {
2295                out.writeInt(1);
2296                TextUtils.writeToParcel(error, out, flags);
2297            }
2298        }
2299
2300        @Override
2301        public String toString() {
2302            String str = "TextView.SavedState{"
2303                    + Integer.toHexString(System.identityHashCode(this))
2304                    + " start=" + selStart + " end=" + selEnd;
2305            if (text != null) {
2306                str += " text=" + text;
2307            }
2308            return str + "}";
2309        }
2310
2311        public static final Parcelable.Creator<SavedState> CREATOR
2312                = new Parcelable.Creator<SavedState>() {
2313            public SavedState createFromParcel(Parcel in) {
2314                return new SavedState(in);
2315            }
2316
2317            public SavedState[] newArray(int size) {
2318                return new SavedState[size];
2319            }
2320        };
2321
2322        private SavedState(Parcel in) {
2323            super(in);
2324            selStart = in.readInt();
2325            selEnd = in.readInt();
2326            frozenWithFocus = (in.readInt() != 0);
2327            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2328
2329            if (in.readInt() != 0) {
2330                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2331            }
2332        }
2333    }
2334
2335    @Override
2336    public Parcelable onSaveInstanceState() {
2337        Parcelable superState = super.onSaveInstanceState();
2338
2339        // Save state if we are forced to
2340        boolean save = mFreezesText;
2341        int start = 0;
2342        int end = 0;
2343
2344        if (mText != null) {
2345            start = Selection.getSelectionStart(mText);
2346            end = Selection.getSelectionEnd(mText);
2347            if (start >= 0 || end >= 0) {
2348                // Or save state if there is a selection
2349                save = true;
2350            }
2351        }
2352
2353        if (save) {
2354            SavedState ss = new SavedState(superState);
2355            // XXX Should also save the current scroll position!
2356            ss.selStart = start;
2357            ss.selEnd = end;
2358
2359            if (mText instanceof Spanned) {
2360                /*
2361                 * Calling setText() strips off any ChangeWatchers;
2362                 * strip them now to avoid leaking references.
2363                 * But do it to a copy so that if there are any
2364                 * further changes to the text of this view, it
2365                 * won't get into an inconsistent state.
2366                 */
2367
2368                Spannable sp = new SpannableString(mText);
2369
2370                for (ChangeWatcher cw :
2371                     sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
2372                    sp.removeSpan(cw);
2373                }
2374
2375                ss.text = sp;
2376            } else {
2377                ss.text = mText.toString();
2378            }
2379
2380            if (isFocused() && start >= 0 && end >= 0) {
2381                ss.frozenWithFocus = true;
2382            }
2383
2384            ss.error = mError;
2385
2386            return ss;
2387        }
2388
2389        return superState;
2390    }
2391
2392    @Override
2393    public void onRestoreInstanceState(Parcelable state) {
2394        if (!(state instanceof SavedState)) {
2395            super.onRestoreInstanceState(state);
2396            return;
2397        }
2398
2399        SavedState ss = (SavedState)state;
2400        super.onRestoreInstanceState(ss.getSuperState());
2401
2402        // XXX restore buffer type too, as well as lots of other stuff
2403        if (ss.text != null) {
2404            setText(ss.text);
2405        }
2406
2407        if (ss.selStart >= 0 && ss.selEnd >= 0) {
2408            if (mText instanceof Spannable) {
2409                int len = mText.length();
2410
2411                if (ss.selStart > len || ss.selEnd > len) {
2412                    String restored = "";
2413
2414                    if (ss.text != null) {
2415                        restored = "(restored) ";
2416                    }
2417
2418                    Log.e("TextView", "Saved cursor position " + ss.selStart +
2419                          "/" + ss.selEnd + " out of range for " + restored +
2420                          "text " + mText);
2421                } else {
2422                    Selection.setSelection((Spannable) mText, ss.selStart,
2423                                           ss.selEnd);
2424
2425                    if (ss.frozenWithFocus) {
2426                        mFrozenWithFocus = true;
2427                    }
2428                }
2429            }
2430        }
2431
2432        if (ss.error != null) {
2433            setError(ss.error);
2434        }
2435    }
2436
2437    /**
2438     * Control whether this text view saves its entire text contents when
2439     * freezing to an icicle, in addition to dynamic state such as cursor
2440     * position.  By default this is false, not saving the text.  Set to true
2441     * if the text in the text view is not being saved somewhere else in
2442     * persistent storage (such as in a content provider) so that if the
2443     * view is later thawed the user will not lose their data.
2444     *
2445     * @param freezesText Controls whether a frozen icicle should include the
2446     * entire text data: true to include it, false to not.
2447     *
2448     * @attr ref android.R.styleable#TextView_freezesText
2449     */
2450    @android.view.RemotableViewMethod
2451    public void setFreezesText(boolean freezesText) {
2452        mFreezesText = freezesText;
2453    }
2454
2455    /**
2456     * Return whether this text view is including its entire text contents
2457     * in frozen icicles.
2458     *
2459     * @return Returns true if text is included, false if it isn't.
2460     *
2461     * @see #setFreezesText
2462     */
2463    public boolean getFreezesText() {
2464        return mFreezesText;
2465    }
2466
2467    ///////////////////////////////////////////////////////////////////////////
2468
2469    /**
2470     * Sets the Factory used to create new Editables.
2471     */
2472    public final void setEditableFactory(Editable.Factory factory) {
2473        mEditableFactory = factory;
2474        setText(mText);
2475    }
2476
2477    /**
2478     * Sets the Factory used to create new Spannables.
2479     */
2480    public final void setSpannableFactory(Spannable.Factory factory) {
2481        mSpannableFactory = factory;
2482        setText(mText);
2483    }
2484
2485    /**
2486     * Sets the string value of the TextView. TextView <em>does not</em> accept
2487     * HTML-like formatting, which you can do with text strings in XML resource files.
2488     * To style your strings, attach android.text.style.* objects to a
2489     * {@link android.text.SpannableString SpannableString}, or see the
2490     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
2491     * Available Resource Types</a> documentation for an example of setting
2492     * formatted text in the XML resource file.
2493     *
2494     * @attr ref android.R.styleable#TextView_text
2495     */
2496    @android.view.RemotableViewMethod
2497    public final void setText(CharSequence text) {
2498        setText(text, mBufferType);
2499    }
2500
2501    /**
2502     * Like {@link #setText(CharSequence)},
2503     * except that the cursor position (if any) is retained in the new text.
2504     *
2505     * @param text The new text to place in the text view.
2506     *
2507     * @see #setText(CharSequence)
2508     */
2509    @android.view.RemotableViewMethod
2510    public final void setTextKeepState(CharSequence text) {
2511        setTextKeepState(text, mBufferType);
2512    }
2513
2514    /**
2515     * Sets the text that this TextView is to display (see
2516     * {@link #setText(CharSequence)}) and also sets whether it is stored
2517     * in a styleable/spannable buffer and whether it is editable.
2518     *
2519     * @attr ref android.R.styleable#TextView_text
2520     * @attr ref android.R.styleable#TextView_bufferType
2521     */
2522    public void setText(CharSequence text, BufferType type) {
2523        setText(text, type, true, 0);
2524
2525        if (mCharWrapper != null) {
2526            mCharWrapper.mChars = null;
2527        }
2528    }
2529
2530    private void setText(CharSequence text, BufferType type,
2531                         boolean notifyBefore, int oldlen) {
2532        if (text == null) {
2533            text = "";
2534        }
2535
2536        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
2537
2538        if (text instanceof Spanned &&
2539            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
2540            setHorizontalFadingEdgeEnabled(true);
2541            setEllipsize(TextUtils.TruncateAt.MARQUEE);
2542        }
2543
2544        int n = mFilters.length;
2545        for (int i = 0; i < n; i++) {
2546            CharSequence out = mFilters[i].filter(text, 0, text.length(),
2547                                                  EMPTY_SPANNED, 0, 0);
2548            if (out != null) {
2549                text = out;
2550            }
2551        }
2552
2553        if (notifyBefore) {
2554            if (mText != null) {
2555                oldlen = mText.length();
2556                sendBeforeTextChanged(mText, 0, oldlen, text.length());
2557            } else {
2558                sendBeforeTextChanged("", 0, 0, text.length());
2559            }
2560        }
2561
2562        boolean needEditableForNotification = false;
2563
2564        if (mListeners != null && mListeners.size() != 0) {
2565            needEditableForNotification = true;
2566        }
2567
2568        if (type == BufferType.EDITABLE || mInput != null ||
2569            needEditableForNotification) {
2570            Editable t = mEditableFactory.newEditable(text);
2571            text = t;
2572            setFilters(t, mFilters);
2573            InputMethodManager imm = InputMethodManager.peekInstance();
2574            if (imm != null) imm.restartInput(this);
2575        } else if (type == BufferType.SPANNABLE || mMovement != null) {
2576            text = mSpannableFactory.newSpannable(text);
2577        } else if (!(text instanceof CharWrapper)) {
2578            text = TextUtils.stringOrSpannedString(text);
2579        }
2580
2581        if (mAutoLinkMask != 0) {
2582            Spannable s2;
2583
2584            if (type == BufferType.EDITABLE || text instanceof Spannable) {
2585                s2 = (Spannable) text;
2586            } else {
2587                s2 = mSpannableFactory.newSpannable(text);
2588            }
2589
2590            if (Linkify.addLinks(s2, mAutoLinkMask)) {
2591                text = s2;
2592                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
2593
2594                /*
2595                 * We must go ahead and set the text before changing the
2596                 * movement method, because setMovementMethod() may call
2597                 * setText() again to try to upgrade the buffer type.
2598                 */
2599                mText = text;
2600
2601                if (mLinksClickable) {
2602                    setMovementMethod(LinkMovementMethod.getInstance());
2603                }
2604            }
2605        }
2606
2607        mBufferType = type;
2608        mText = text;
2609
2610        if (mTransformation == null)
2611            mTransformed = text;
2612        else
2613            mTransformed = mTransformation.getTransformation(text, this);
2614
2615        final int textLength = text.length();
2616
2617        if (text instanceof Spannable) {
2618            Spannable sp = (Spannable) text;
2619
2620            // Remove any ChangeWatchers that might have come
2621            // from other TextViews.
2622            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
2623            final int count = watchers.length;
2624            for (int i = 0; i < count; i++)
2625                sp.removeSpan(watchers[i]);
2626
2627            if (mChangeWatcher == null)
2628                mChangeWatcher = new ChangeWatcher();
2629
2630            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
2631                       (PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
2632
2633            if (mInput != null) {
2634                sp.setSpan(mInput, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2635            }
2636
2637            if (mTransformation != null) {
2638                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2639
2640            }
2641
2642            if (mMovement != null) {
2643                mMovement.initialize(this, (Spannable) text);
2644
2645                /*
2646                 * Initializing the movement method will have set the
2647                 * selection, so reset mSelectionMoved to keep that from
2648                 * interfering with the normal on-focus selection-setting.
2649                 */
2650                mSelectionMoved = false;
2651            }
2652        }
2653
2654        if (mLayout != null) {
2655            checkForRelayout();
2656        }
2657
2658        sendOnTextChanged(text, 0, oldlen, textLength);
2659        onTextChanged(text, 0, oldlen, textLength);
2660
2661        if (needEditableForNotification) {
2662            sendAfterTextChanged((Editable) text);
2663        }
2664    }
2665
2666    /**
2667     * Sets the TextView to display the specified slice of the specified
2668     * char array.  You must promise that you will not change the contents
2669     * of the array except for right before another call to setText(),
2670     * since the TextView has no way to know that the text
2671     * has changed and that it needs to invalidate and re-layout.
2672     */
2673    public final void setText(char[] text, int start, int len) {
2674        int oldlen = 0;
2675
2676        if (start < 0 || len < 0 || start + len > text.length) {
2677            throw new IndexOutOfBoundsException(start + ", " + len);
2678        }
2679
2680        /*
2681         * We must do the before-notification here ourselves because if
2682         * the old text is a CharWrapper we destroy it before calling
2683         * into the normal path.
2684         */
2685        if (mText != null) {
2686            oldlen = mText.length();
2687            sendBeforeTextChanged(mText, 0, oldlen, len);
2688        } else {
2689            sendBeforeTextChanged("", 0, 0, len);
2690        }
2691
2692        if (mCharWrapper == null) {
2693            mCharWrapper = new CharWrapper(text, start, len);
2694        } else {
2695            mCharWrapper.set(text, start, len);
2696        }
2697
2698        setText(mCharWrapper, mBufferType, false, oldlen);
2699    }
2700
2701    private static class CharWrapper
2702            implements CharSequence, GetChars, GraphicsOperations {
2703        private char[] mChars;
2704        private int mStart, mLength;
2705
2706        public CharWrapper(char[] chars, int start, int len) {
2707            mChars = chars;
2708            mStart = start;
2709            mLength = len;
2710        }
2711
2712        /* package */ void set(char[] chars, int start, int len) {
2713            mChars = chars;
2714            mStart = start;
2715            mLength = len;
2716        }
2717
2718        public int length() {
2719            return mLength;
2720        }
2721
2722        public char charAt(int off) {
2723            return mChars[off + mStart];
2724        }
2725
2726        public String toString() {
2727            return new String(mChars, mStart, mLength);
2728        }
2729
2730        public CharSequence subSequence(int start, int end) {
2731            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2732                throw new IndexOutOfBoundsException(start + ", " + end);
2733            }
2734
2735            return new String(mChars, start + mStart, end - start);
2736        }
2737
2738        public void getChars(int start, int end, char[] buf, int off) {
2739            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2740                throw new IndexOutOfBoundsException(start + ", " + end);
2741            }
2742
2743            System.arraycopy(mChars, start + mStart, buf, off, end - start);
2744        }
2745
2746        public void drawText(Canvas c, int start, int end,
2747                             float x, float y, Paint p) {
2748            c.drawText(mChars, start + mStart, end - start, x, y, p);
2749        }
2750
2751        public float measureText(int start, int end, Paint p) {
2752            return p.measureText(mChars, start + mStart, end - start);
2753        }
2754
2755        public int getTextWidths(int start, int end, float[] widths, Paint p) {
2756            return p.getTextWidths(mChars, start + mStart, end - start, widths);
2757        }
2758    }
2759
2760    /**
2761     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
2762     * except that the cursor position (if any) is retained in the new text.
2763     *
2764     * @see #setText(CharSequence, android.widget.TextView.BufferType)
2765     */
2766    public final void setTextKeepState(CharSequence text, BufferType type) {
2767        int start = getSelectionStart();
2768        int end = getSelectionEnd();
2769        int len = text.length();
2770
2771        setText(text, type);
2772
2773        if (start >= 0 || end >= 0) {
2774            if (mText instanceof Spannable) {
2775                Selection.setSelection((Spannable) mText,
2776                                       Math.max(0, Math.min(start, len)),
2777                                       Math.max(0, Math.min(end, len)));
2778            }
2779        }
2780    }
2781
2782    @android.view.RemotableViewMethod
2783    public final void setText(int resid) {
2784        setText(getContext().getResources().getText(resid));
2785    }
2786
2787    public final void setText(int resid, BufferType type) {
2788        setText(getContext().getResources().getText(resid), type);
2789    }
2790
2791    /**
2792     * Sets the text to be displayed when the text of the TextView is empty.
2793     * Null means to use the normal empty text. The hint does not currently
2794     * participate in determining the size of the view.
2795     *
2796     * This method is deprecated. Use {link #setHint(int, String)} or
2797     * {link #setHint(CharSequence, String)} instead.
2798     *
2799     * @attr ref android.R.styleable#TextView_hint
2800     */
2801    @android.view.RemotableViewMethod
2802    public final void setHint(CharSequence hint) {
2803        mHint = TextUtils.stringOrSpannedString(hint);
2804
2805        if (mLayout != null) {
2806            checkForRelayout();
2807        }
2808
2809        if (mText.length() == 0)
2810            invalidate();
2811    }
2812
2813    /**
2814     * Sets the text to be displayed when the text of the TextView is empty,
2815     * from a resource.
2816     *
2817     * This method is deprecated. Use {link #setHint(int, String)} or
2818     * {link #setHint(CharSequence, String)} instead.
2819     *
2820     * @attr ref android.R.styleable#TextView_hint
2821     */
2822    @android.view.RemotableViewMethod
2823    public final void setHint(int resid) {
2824        setHint(getContext().getResources().getText(resid));
2825    }
2826
2827    /**
2828     * Returns the hint that is displayed when the text of the TextView
2829     * is empty.
2830     *
2831     * @attr ref android.R.styleable#TextView_hint
2832     */
2833    @ViewDebug.CapturedViewProperty
2834    public CharSequence getHint() {
2835        return mHint;
2836    }
2837
2838    /**
2839     * Set the type of the content with a constant as defined for
2840     * {@link EditorInfo#inputType}.  This will take care of changing
2841     * the key listener, by calling {@link #setKeyListener(KeyListener)}, to
2842     * match the given content type.  If the given content type is
2843     * {@link EditorInfo#TYPE_NULL} then a soft keyboard will
2844     * not be displayed for this text view.
2845     *
2846     * @see #getInputType()
2847     * @see #setRawInputType(int)
2848     * @see android.text.InputType
2849     * @attr ref android.R.styleable#TextView_inputType
2850     */
2851    public void setInputType(int type) {
2852        setInputType(type, false);
2853        final int variation = type&(EditorInfo.TYPE_MASK_CLASS
2854                |EditorInfo.TYPE_MASK_VARIATION);
2855        final boolean isPassword = variation
2856                == (EditorInfo.TYPE_CLASS_TEXT
2857                        |EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
2858        boolean forceUpdate = false;
2859        if (isPassword) {
2860            setTransformationMethod(PasswordTransformationMethod.getInstance());
2861            setTypefaceByIndex(MONOSPACE, 0);
2862        } else if (mTransformation == PasswordTransformationMethod.getInstance()) {
2863            // We need to clean up if we were previously in password mode.
2864            if (variation != (EditorInfo.TYPE_CLASS_TEXT
2865                        |EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD)) {
2866                setTypefaceByIndex(-1, -1);
2867            }
2868            forceUpdate = true;
2869        } else if (variation == (EditorInfo.TYPE_CLASS_TEXT
2870                        |EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD)) {
2871            setTypefaceByIndex(MONOSPACE, 0);
2872        }
2873
2874        boolean multiLine = (type&(EditorInfo.TYPE_MASK_CLASS
2875                        | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
2876                (EditorInfo.TYPE_CLASS_TEXT
2877                        | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
2878
2879        // We need to update the single line mode if it has changed or we
2880        // were previously in password mode.
2881        if (mSingleLine == multiLine || forceUpdate) {
2882            // Change single line mode, but only change the transformation if
2883            // we are not in password mode.
2884            applySingleLine(!multiLine, !isPassword);
2885        }
2886
2887        InputMethodManager imm = InputMethodManager.peekInstance();
2888        if (imm != null) imm.restartInput(this);
2889    }
2890
2891    /**
2892     * Directly change the content type integer of the text view, without
2893     * modifying any other state.
2894     * @see #setInputType(int)
2895     * @see android.text.InputType
2896     * @attr ref android.R.styleable#TextView_inputType
2897     */
2898    public void setRawInputType(int type) {
2899        mInputType = type;
2900    }
2901
2902    private void setInputType(int type, boolean direct) {
2903        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
2904        KeyListener input;
2905        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
2906            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT)
2907                    != 0;
2908            TextKeyListener.Capitalize cap;
2909            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
2910                cap = TextKeyListener.Capitalize.CHARACTERS;
2911            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
2912                cap = TextKeyListener.Capitalize.WORDS;
2913            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
2914                cap = TextKeyListener.Capitalize.SENTENCES;
2915            } else {
2916                cap = TextKeyListener.Capitalize.NONE;
2917            }
2918            input = TextKeyListener.getInstance(autotext, cap);
2919        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
2920            input = DigitsKeyListener.getInstance(
2921                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
2922                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
2923        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
2924            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
2925                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
2926                    input = DateKeyListener.getInstance();
2927                    break;
2928                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
2929                    input = TimeKeyListener.getInstance();
2930                    break;
2931                default:
2932                    input = DateTimeKeyListener.getInstance();
2933                    break;
2934            }
2935        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
2936            input = DialerKeyListener.getInstance();
2937        } else {
2938            input = TextKeyListener.getInstance();
2939        }
2940        mInputType = type;
2941        if (direct) mInput = input;
2942        else {
2943            setKeyListenerOnly(input);
2944        }
2945    }
2946
2947    /**
2948     * Get the type of the content.
2949     *
2950     * @see #setInputType(int)
2951     * @see android.text.InputType
2952     */
2953    public int getInputType() {
2954        return mInputType;
2955    }
2956
2957    /**
2958     * Change the editor type integer associated with the text view, which
2959     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
2960     * has focus.
2961     * @see #getImeOptions
2962     * @see android.view.inputmethod.EditorInfo
2963     * @attr ref android.R.styleable#TextView_imeOptions
2964     */
2965    public void setImeOptions(int imeOptions) {
2966        if (mInputContentType == null) {
2967            mInputContentType = new InputContentType();
2968        }
2969        mInputContentType.imeOptions = imeOptions;
2970    }
2971
2972    /**
2973     * Get the type of the IME editor.
2974     *
2975     * @see #setImeOptions(int)
2976     * @see android.view.inputmethod.EditorInfo
2977     */
2978    public int getImeOptions() {
2979        return mInputContentType != null
2980                ? mInputContentType.imeOptions : EditorInfo.IME_NULL;
2981    }
2982
2983    /**
2984     * Change the custom IME action associated with the text view, which
2985     * will be reported to an IME with {@link EditorInfo#actionLabel}
2986     * and {@link EditorInfo#actionId} when it has focus.
2987     * @see #getImeActionLabel
2988     * @see #getImeActionId
2989     * @see android.view.inputmethod.EditorInfo
2990     * @attr ref android.R.styleable#TextView_imeActionLabel
2991     * @attr ref android.R.styleable#TextView_imeActionId
2992     */
2993    public void setImeActionLabel(CharSequence label, int actionId) {
2994        if (mInputContentType == null) {
2995            mInputContentType = new InputContentType();
2996        }
2997        mInputContentType.imeActionLabel = label;
2998        mInputContentType.imeActionId = actionId;
2999    }
3000
3001    /**
3002     * Get the IME action label previous set with {@link #setImeActionLabel}.
3003     *
3004     * @see #setImeActionLabel
3005     * @see android.view.inputmethod.EditorInfo
3006     */
3007    public CharSequence getImeActionLabel() {
3008        return mInputContentType != null
3009                ? mInputContentType.imeActionLabel : null;
3010    }
3011
3012    /**
3013     * Get the IME action ID previous set with {@link #setImeActionLabel}.
3014     *
3015     * @see #setImeActionLabel
3016     * @see android.view.inputmethod.EditorInfo
3017     */
3018    public int getImeActionId() {
3019        return mInputContentType != null
3020                ? mInputContentType.imeActionId : 0;
3021    }
3022
3023    /**
3024     * Set a special listener to be called when an action is performed
3025     * on the text view.  This will be called when the enter key is pressed,
3026     * or when an action supplied to the IME is selected by the user.  Setting
3027     * this means that the normal hard key event will not insert a newline
3028     * into the text view, even if it is multi-line; holding down the ALT
3029     * modifier will, however, allow the user to insert a newline character.
3030     */
3031    public void setOnEditorActionListener(OnEditorActionListener l) {
3032        if (mInputContentType == null) {
3033            mInputContentType = new InputContentType();
3034        }
3035        mInputContentType.onEditorActionListener = l;
3036    }
3037
3038    /**
3039     * Called when an attached input method calls
3040     * {@link InputConnection#performEditorAction(int)
3041     * InputConnection.performEditorAction()}
3042     * for this text view.  The default implementation will call your action
3043     * listener supplied to {@link #setOnEditorActionListener}, or perform
3044     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
3045     * EditorInfo.IME_ACTION_NEXT} or {@link EditorInfo#IME_ACTION_DONE
3046     * EditorInfo.IME_ACTION_DONE}.
3047     *
3048     * <p>For backwards compatibility, if no IME options have been set and the
3049     * text view would not normally advance focus on enter, then
3050     * the NEXT and DONE actions received here will be turned into an enter
3051     * key down/up pair to go through the normal key handling.
3052     *
3053     * @param actionCode The code of the action being performed.
3054     *
3055     * @see #setOnEditorActionListener
3056     */
3057    public void onEditorAction(int actionCode) {
3058        final InputContentType ict = mInputContentType;
3059        if (ict != null) {
3060            if (ict.onEditorActionListener != null) {
3061                if (ict.onEditorActionListener.onEditorAction(this,
3062                        actionCode, null)) {
3063                    return;
3064                }
3065            }
3066
3067            // This is the handling for some default action.
3068            // Note that for backwards compatibility we don't do this
3069            // default handling if explicit ime options have not been given,
3070            // instead turning this into the normal enter key codes that an
3071            // app may be expecting.
3072            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
3073                View v = focusSearch(FOCUS_DOWN);
3074                if (v != null) {
3075                    if (!v.requestFocus(FOCUS_DOWN)) {
3076                        throw new IllegalStateException("focus search returned a view " +
3077                                "that wasn't able to take focus!");
3078                    }
3079                }
3080                return;
3081
3082            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
3083                InputMethodManager imm = InputMethodManager.peekInstance();
3084                if (imm != null) {
3085                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
3086                }
3087                return;
3088            }
3089        }
3090
3091        Handler h = getHandler();
3092        if (h != null) {
3093            long eventTime = SystemClock.uptimeMillis();
3094            h.sendMessage(h.obtainMessage(ViewRoot.DISPATCH_KEY_FROM_IME,
3095                    new KeyEvent(eventTime, eventTime,
3096                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0, 0, 0,
3097                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3098                    | KeyEvent.FLAG_EDITOR_ACTION)));
3099            h.sendMessage(h.obtainMessage(ViewRoot.DISPATCH_KEY_FROM_IME,
3100                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
3101                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0, 0, 0,
3102                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3103                    | KeyEvent.FLAG_EDITOR_ACTION)));
3104        }
3105    }
3106
3107    /**
3108     * Set the private content type of the text, which is the
3109     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
3110     * field that will be filled in when creating an input connection.
3111     *
3112     * @see #getPrivateImeOptions()
3113     * @see EditorInfo#privateImeOptions
3114     * @attr ref android.R.styleable#TextView_privateImeOptions
3115     */
3116    public void setPrivateImeOptions(String type) {
3117        if (mInputContentType == null) mInputContentType = new InputContentType();
3118        mInputContentType.privateImeOptions = type;
3119    }
3120
3121    /**
3122     * Get the private type of the content.
3123     *
3124     * @see #setPrivateImeOptions(String)
3125     * @see EditorInfo#privateImeOptions
3126     */
3127    public String getPrivateImeOptions() {
3128        return mInputContentType != null
3129                ? mInputContentType.privateImeOptions : null;
3130    }
3131
3132    /**
3133     * Set the extra input data of the text, which is the
3134     * {@link EditorInfo#extras TextBoxAttribute.extras}
3135     * Bundle that will be filled in when creating an input connection.  The
3136     * given integer is the resource ID of an XML resource holding an
3137     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
3138     *
3139     * @see #getInputExtras(boolean)
3140     * @see EditorInfo#extras
3141     * @attr ref android.R.styleable#TextView_editorExtras
3142     */
3143    public void setInputExtras(int xmlResId)
3144            throws XmlPullParserException, IOException {
3145        XmlResourceParser parser = getResources().getXml(xmlResId);
3146        if (mInputContentType == null) mInputContentType = new InputContentType();
3147        mInputContentType.extras = new Bundle();
3148        getResources().parseBundleExtras(parser, mInputContentType.extras);
3149    }
3150
3151    /**
3152     * Retrieve the input extras currently associated with the text view, which
3153     * can be viewed as well as modified.
3154     *
3155     * @param create If true, the extras will be created if they don't already
3156     * exist.  Otherwise, null will be returned if none have been created.
3157     * @see #setInputExtras(int)View
3158     * @see EditorInfo#extras
3159     * @attr ref android.R.styleable#TextView_editorExtras
3160     */
3161    public Bundle getInputExtras(boolean create) {
3162        if (mInputContentType == null) {
3163            if (!create) return null;
3164            mInputContentType = new InputContentType();
3165        }
3166        if (mInputContentType.extras == null) {
3167            if (!create) return null;
3168            mInputContentType.extras = new Bundle();
3169        }
3170        return mInputContentType.extras;
3171    }
3172
3173    /**
3174     * Returns the error message that was set to be displayed with
3175     * {@link #setError}, or <code>null</code> if no error was set
3176     * or if it the error was cleared by the widget after user input.
3177     */
3178    public CharSequence getError() {
3179        return mError;
3180    }
3181
3182    /**
3183     * Sets the right-hand compound drawable of the TextView to the "error"
3184     * icon and sets an error message that will be displayed in a popup when
3185     * the TextView has focus.  The icon and error message will be reset to
3186     * null when any key events cause changes to the TextView's text.  If the
3187     * <code>error</code> is <code>null</code>, the error message and icon
3188     * will be cleared.
3189     */
3190    @android.view.RemotableViewMethod
3191    public void setError(CharSequence error) {
3192        if (error == null) {
3193            setError(null, null);
3194        } else {
3195            Drawable dr = getContext().getResources().
3196                getDrawable(com.android.internal.R.drawable.
3197                            indicator_input_error);
3198
3199            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
3200            setError(error, dr);
3201        }
3202    }
3203
3204    /**
3205     * Sets the right-hand compound drawable of the TextView to the specified
3206     * icon and sets an error message that will be displayed in a popup when
3207     * the TextView has focus.  The icon and error message will be reset to
3208     * null when any key events cause changes to the TextView's text.  The
3209     * drawable must already have had {@link Drawable#setBounds} set on it.
3210     * If the <code>error</code> is <code>null</code>, the error message will
3211     * be cleared (and you should provide a <code>null</code> icon as well).
3212     */
3213    public void setError(CharSequence error, Drawable icon) {
3214        error = TextUtils.stringOrSpannedString(error);
3215
3216        mError = error;
3217        mErrorWasChanged = true;
3218        final Drawables dr = mDrawables;
3219        if (dr != null) {
3220            setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop,
3221                                 icon, dr.mDrawableBottom);
3222        } else {
3223            setCompoundDrawables(null, null, icon, null);
3224        }
3225
3226        if (error == null) {
3227            if (mPopup != null) {
3228                if (mPopup.isShowing()) {
3229                    mPopup.dismiss();
3230                }
3231
3232                mPopup = null;
3233            }
3234        } else {
3235            if (isFocused()) {
3236                showError();
3237            }
3238        }
3239    }
3240
3241    private void showError() {
3242        if (getWindowToken() == null) {
3243            mShowErrorAfterAttach = true;
3244            return;
3245        }
3246
3247        if (mPopup == null) {
3248            LayoutInflater inflater = LayoutInflater.from(getContext());
3249            final TextView err = (TextView) inflater.inflate(com.android.internal.R.layout.textview_hint,
3250                    null);
3251
3252            mPopup = new ErrorPopup(err, 200, 50);
3253            mPopup.setFocusable(false);
3254            // The user is entering text, so the input method is needed.  We
3255            // don't want the popup to be displayed on top of it.
3256            mPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED);
3257        }
3258
3259        TextView tv = (TextView) mPopup.getContentView();
3260        chooseSize(mPopup, mError, tv);
3261        tv.setText(mError);
3262
3263        mPopup.showAsDropDown(this, getErrorX(), getErrorY());
3264        mPopup.fixDirection(mPopup.isAboveAnchor());
3265    }
3266
3267    private static class ErrorPopup extends PopupWindow {
3268        private boolean mAbove = false;
3269        private TextView mView;
3270
3271        ErrorPopup(TextView v, int width, int height) {
3272            super(v, width, height);
3273            mView = v;
3274        }
3275
3276        void fixDirection(boolean above) {
3277            mAbove = above;
3278
3279            if (above) {
3280                mView.setBackgroundResource(com.android.internal.R.drawable.popup_inline_error_above);
3281            } else {
3282                mView.setBackgroundResource(com.android.internal.R.drawable.popup_inline_error);
3283            }
3284        }
3285
3286        @Override
3287        public void update(int x, int y, int w, int h, boolean force) {
3288            super.update(x, y, w, h, force);
3289
3290            boolean above = isAboveAnchor();
3291            if (above != mAbove) {
3292                fixDirection(above);
3293            }
3294        }
3295    }
3296
3297    /**
3298     * Returns the Y offset to make the pointy top of the error point
3299     * at the middle of the error icon.
3300     */
3301    private int getErrorX() {
3302        /*
3303         * The "25" is the distance between the point and the right edge
3304         * of the background
3305         */
3306
3307        final Drawables dr = mDrawables;
3308        return getWidth() - mPopup.getWidth()
3309                - getPaddingRight()
3310                - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + 25;
3311    }
3312
3313    /**
3314     * Returns the Y offset to make the pointy top of the error point
3315     * at the bottom of the error icon.
3316     */
3317    private int getErrorY() {
3318        /*
3319         * Compound, not extended, because the icon is not clipped
3320         * if the text height is smaller.
3321         */
3322        int vspace = mBottom - mTop -
3323                     getCompoundPaddingBottom() - getCompoundPaddingTop();
3324
3325        final Drawables dr = mDrawables;
3326        int icontop = getCompoundPaddingTop()
3327                + (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2;
3328
3329        /*
3330         * The "2" is the distance between the point and the top edge
3331         * of the background.
3332         */
3333
3334        return icontop + (dr != null ? dr.mDrawableHeightRight : 0)
3335                - getHeight() - 2;
3336    }
3337
3338    private void hideError() {
3339        if (mPopup != null) {
3340            if (mPopup.isShowing()) {
3341                mPopup.dismiss();
3342            }
3343        }
3344
3345        mShowErrorAfterAttach = false;
3346    }
3347
3348    private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) {
3349        int wid = tv.getPaddingLeft() + tv.getPaddingRight();
3350        int ht = tv.getPaddingTop() + tv.getPaddingBottom();
3351
3352        /*
3353         * Figure out how big the text would be if we laid it out to the
3354         * full width of this view minus the border.
3355         */
3356        int cap = getWidth() - wid;
3357        if (cap < 0) {
3358            cap = 200; // We must not be measured yet -- setFrame() will fix it.
3359        }
3360
3361        Layout l = new StaticLayout(text, tv.getPaint(), cap,
3362                                    Layout.Alignment.ALIGN_NORMAL, 1, 0, true);
3363        float max = 0;
3364        for (int i = 0; i < l.getLineCount(); i++) {
3365            max = Math.max(max, l.getLineWidth(i));
3366        }
3367
3368        /*
3369         * Now set the popup size to be big enough for the text plus the border.
3370         */
3371        pop.setWidth(wid + (int) Math.ceil(max));
3372        pop.setHeight(ht + l.getHeight());
3373    }
3374
3375
3376    @Override
3377    protected boolean setFrame(int l, int t, int r, int b) {
3378        boolean result = super.setFrame(l, t, r, b);
3379
3380        if (mPopup != null) {
3381            TextView tv = (TextView) mPopup.getContentView();
3382            chooseSize(mPopup, mError, tv);
3383            mPopup.update(this, getErrorX(), getErrorY(), -1, -1);
3384        }
3385
3386        restartMarqueeIfNeeded();
3387
3388        return result;
3389    }
3390
3391    private void restartMarqueeIfNeeded() {
3392        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3393            mRestartMarquee = false;
3394            startMarquee();
3395        }
3396    }
3397
3398    /**
3399     * Sets the list of input filters that will be used if the buffer is
3400     * Editable.  Has no effect otherwise.
3401     *
3402     * @attr ref android.R.styleable#TextView_maxLength
3403     */
3404    public void setFilters(InputFilter[] filters) {
3405        if (filters == null) {
3406            throw new IllegalArgumentException();
3407        }
3408
3409        mFilters = filters;
3410
3411        if (mText instanceof Editable) {
3412            setFilters((Editable) mText, filters);
3413        }
3414    }
3415
3416    /**
3417     * Sets the list of input filters on the specified Editable,
3418     * and includes mInput in the list if it is an InputFilter.
3419     */
3420    private void setFilters(Editable e, InputFilter[] filters) {
3421        if (mInput instanceof InputFilter) {
3422            InputFilter[] nf = new InputFilter[filters.length + 1];
3423
3424            System.arraycopy(filters, 0, nf, 0, filters.length);
3425            nf[filters.length] = (InputFilter) mInput;
3426
3427            e.setFilters(nf);
3428        } else {
3429            e.setFilters(filters);
3430        }
3431    }
3432
3433    /**
3434     * Returns the current list of input filters.
3435     */
3436    public InputFilter[] getFilters() {
3437        return mFilters;
3438    }
3439
3440    /////////////////////////////////////////////////////////////////////////
3441
3442    private int getVerticalOffset(boolean forceNormal) {
3443        int voffset = 0;
3444        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3445
3446        Layout l = mLayout;
3447        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3448            l = mHintLayout;
3449        }
3450
3451        if (gravity != Gravity.TOP) {
3452            int boxht;
3453
3454            if (l == mHintLayout) {
3455                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3456                        getCompoundPaddingBottom();
3457            } else {
3458                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3459                        getExtendedPaddingBottom();
3460            }
3461            int textht = l.getHeight();
3462
3463            if (textht < boxht) {
3464                if (gravity == Gravity.BOTTOM)
3465                    voffset = boxht - textht;
3466                else // (gravity == Gravity.CENTER_VERTICAL)
3467                    voffset = (boxht - textht) >> 1;
3468            }
3469        }
3470        return voffset;
3471    }
3472
3473    private int getBottomVerticalOffset(boolean forceNormal) {
3474        int voffset = 0;
3475        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3476
3477        Layout l = mLayout;
3478        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3479            l = mHintLayout;
3480        }
3481
3482        if (gravity != Gravity.BOTTOM) {
3483            int boxht;
3484
3485            if (l == mHintLayout) {
3486                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3487                        getCompoundPaddingBottom();
3488            } else {
3489                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3490                        getExtendedPaddingBottom();
3491            }
3492            int textht = l.getHeight();
3493
3494            if (textht < boxht) {
3495                if (gravity == Gravity.TOP)
3496                    voffset = boxht - textht;
3497                else // (gravity == Gravity.CENTER_VERTICAL)
3498                    voffset = (boxht - textht) >> 1;
3499            }
3500        }
3501        return voffset;
3502    }
3503
3504    private void invalidateCursorPath() {
3505        if (mHighlightPathBogus) {
3506            invalidateCursor();
3507        } else {
3508            synchronized (sTempRect) {
3509                /*
3510                 * The reason for this concern about the thickness of the
3511                 * cursor and doing the floor/ceil on the coordinates is that
3512                 * some EditTexts (notably textfields in the Browser) have
3513                 * anti-aliased text where not all the characters are
3514                 * necessarily at integer-multiple locations.  This should
3515                 * make sure the entire cursor gets invalidated instead of
3516                 * sometimes missing half a pixel.
3517                 */
3518
3519                float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
3520                if (thick < 1.0f) {
3521                    thick = 1.0f;
3522                }
3523
3524                thick /= 2;
3525
3526                mHighlightPath.computeBounds(sTempRect, false);
3527
3528                int left = getCompoundPaddingLeft();
3529                int top = getExtendedPaddingTop() + getVerticalOffset(true);
3530
3531                invalidate((int) FloatMath.floor(left + sTempRect.left - thick),
3532                           (int) FloatMath.floor(top + sTempRect.top - thick),
3533                           (int) FloatMath.ceil(left + sTempRect.right + thick),
3534                           (int) FloatMath.ceil(top + sTempRect.bottom + thick));
3535            }
3536        }
3537    }
3538
3539    private void invalidateCursor() {
3540        int where = Selection.getSelectionEnd(mText);
3541
3542        invalidateCursor(where, where, where);
3543    }
3544
3545    private void invalidateCursor(int a, int b, int c) {
3546        if (mLayout == null) {
3547            invalidate();
3548        } else {
3549            if (a >= 0 || b >= 0 || c >= 0) {
3550                int first = Math.min(Math.min(a, b), c);
3551                int last = Math.max(Math.max(a, b), c);
3552
3553                int line = mLayout.getLineForOffset(first);
3554                int top = mLayout.getLineTop(line);
3555
3556                // This is ridiculous, but the descent from the line above
3557                // can hang down into the line we really want to redraw,
3558                // so we have to invalidate part of the line above to make
3559                // sure everything that needs to be redrawn really is.
3560                // (But not the whole line above, because that would cause
3561                // the same problem with the descenders on the line above it!)
3562                if (line > 0) {
3563                    top -= mLayout.getLineDescent(line - 1);
3564                }
3565
3566                int line2;
3567
3568                if (first == last)
3569                    line2 = line;
3570                else
3571                    line2 = mLayout.getLineForOffset(last);
3572
3573                int bottom = mLayout.getLineTop(line2 + 1);
3574                int voffset = getVerticalOffset(true);
3575
3576                int left = getCompoundPaddingLeft() + mScrollX;
3577                invalidate(left, top + voffset + getExtendedPaddingTop(),
3578                           left + getWidth() - getCompoundPaddingLeft() -
3579                           getCompoundPaddingRight(),
3580                           bottom + voffset + getExtendedPaddingTop());
3581            }
3582        }
3583    }
3584
3585    private void registerForPreDraw() {
3586        final ViewTreeObserver observer = getViewTreeObserver();
3587        if (observer == null) {
3588            return;
3589        }
3590
3591        if (mPreDrawState == PREDRAW_NOT_REGISTERED) {
3592            observer.addOnPreDrawListener(this);
3593            mPreDrawState = PREDRAW_PENDING;
3594        } else if (mPreDrawState == PREDRAW_DONE) {
3595            mPreDrawState = PREDRAW_PENDING;
3596        }
3597
3598        // else state is PREDRAW_PENDING, so keep waiting.
3599    }
3600
3601    /**
3602     * {@inheritDoc}
3603     */
3604    public boolean onPreDraw() {
3605        if (mPreDrawState != PREDRAW_PENDING) {
3606            return true;
3607        }
3608
3609        if (mLayout == null) {
3610            assumeLayout();
3611        }
3612
3613        boolean changed = false;
3614
3615        if (mMovement != null) {
3616            int curs = Selection.getSelectionEnd(mText);
3617
3618            /*
3619             * TODO: This should really only keep the end in view if
3620             * it already was before the text changed.  I'm not sure
3621             * of a good way to tell from here if it was.
3622             */
3623            if (curs < 0 &&
3624                  (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
3625                curs = mText.length();
3626            }
3627
3628            if (curs >= 0) {
3629                changed = bringPointIntoView(curs);
3630            }
3631        } else {
3632            changed = bringTextIntoView();
3633        }
3634
3635        mPreDrawState = PREDRAW_DONE;
3636        return !changed;
3637    }
3638
3639    @Override
3640    protected void onAttachedToWindow() {
3641        super.onAttachedToWindow();
3642
3643        mTemporaryDetach = false;
3644
3645        if (mShowErrorAfterAttach) {
3646            showError();
3647            mShowErrorAfterAttach = false;
3648        }
3649    }
3650
3651    @Override
3652    protected void onDetachedFromWindow() {
3653        super.onDetachedFromWindow();
3654
3655        if (mPreDrawState != PREDRAW_NOT_REGISTERED) {
3656            final ViewTreeObserver observer = getViewTreeObserver();
3657            if (observer != null) {
3658                observer.removeOnPreDrawListener(this);
3659                mPreDrawState = PREDRAW_NOT_REGISTERED;
3660            }
3661        }
3662
3663        if (mError != null) {
3664            hideError();
3665        }
3666    }
3667
3668    @Override
3669    protected boolean isPaddingOffsetRequired() {
3670        return mShadowRadius != 0;
3671    }
3672
3673    @Override
3674    protected int getLeftPaddingOffset() {
3675        return (int) Math.min(0, mShadowDx - mShadowRadius);
3676    }
3677
3678    @Override
3679    protected int getTopPaddingOffset() {
3680        return (int) Math.min(0, mShadowDy - mShadowRadius);
3681    }
3682
3683    @Override
3684    protected int getBottomPaddingOffset() {
3685        return (int) Math.max(0, mShadowDy + mShadowRadius);
3686    }
3687
3688    @Override
3689    protected int getRightPaddingOffset() {
3690        return (int) Math.max(0, mShadowDx + mShadowRadius);
3691    }
3692
3693    @Override
3694    protected boolean verifyDrawable(Drawable who) {
3695        final boolean verified = super.verifyDrawable(who);
3696        if (!verified && mDrawables != null) {
3697            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
3698                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom;
3699        }
3700        return verified;
3701    }
3702
3703    @Override
3704    public void invalidateDrawable(Drawable drawable) {
3705        if (verifyDrawable(drawable)) {
3706            final Rect dirty = drawable.getBounds();
3707            int scrollX = mScrollX;
3708            int scrollY = mScrollY;
3709
3710            // IMPORTANT: The coordinates below are based on the coordinates computed
3711            // for each compound drawable in onDraw(). Make sure to update each section
3712            // accordingly.
3713            final TextView.Drawables drawables = mDrawables;
3714            if (drawable == drawables.mDrawableLeft) {
3715                final int compoundPaddingTop = getCompoundPaddingTop();
3716                final int compoundPaddingBottom = getCompoundPaddingBottom();
3717                final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
3718
3719                scrollX += mPaddingLeft;
3720                scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
3721            } else if (drawable == drawables.mDrawableRight) {
3722                final int compoundPaddingTop = getCompoundPaddingTop();
3723                final int compoundPaddingBottom = getCompoundPaddingBottom();
3724                final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
3725
3726                scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
3727                scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
3728            } else if (drawable == drawables.mDrawableTop) {
3729                final int compoundPaddingLeft = getCompoundPaddingLeft();
3730                final int compoundPaddingRight = getCompoundPaddingRight();
3731                final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
3732
3733                scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
3734                scrollY += mPaddingTop;
3735            } else if (drawable == drawables.mDrawableBottom) {
3736                final int compoundPaddingLeft = getCompoundPaddingLeft();
3737                final int compoundPaddingRight = getCompoundPaddingRight();
3738                final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
3739
3740                scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
3741                scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
3742            }
3743
3744            invalidate(dirty.left + scrollX, dirty.top + scrollY,
3745                    dirty.right + scrollX, dirty.bottom + scrollY);
3746        }
3747    }
3748
3749    @Override
3750    protected void onDraw(Canvas canvas) {
3751        restartMarqueeIfNeeded();
3752
3753        // Draw the background for this view
3754        super.onDraw(canvas);
3755
3756        final int compoundPaddingLeft = getCompoundPaddingLeft();
3757        final int compoundPaddingTop = getCompoundPaddingTop();
3758        final int compoundPaddingRight = getCompoundPaddingRight();
3759        final int compoundPaddingBottom = getCompoundPaddingBottom();
3760        final int scrollX = mScrollX;
3761        final int scrollY = mScrollY;
3762        final int right = mRight;
3763        final int left = mLeft;
3764        final int bottom = mBottom;
3765        final int top = mTop;
3766
3767        final Drawables dr = mDrawables;
3768        if (dr != null) {
3769            /*
3770             * Compound, not extended, because the icon is not clipped
3771             * if the text height is smaller.
3772             */
3773
3774            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
3775            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
3776
3777            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3778            // Make sure to update invalidateDrawable() when changing this code.
3779            if (dr.mDrawableLeft != null) {
3780                canvas.save();
3781                canvas.translate(scrollX + mPaddingLeft,
3782                                 scrollY + compoundPaddingTop +
3783                                 (vspace - dr.mDrawableHeightLeft) / 2);
3784                dr.mDrawableLeft.draw(canvas);
3785                canvas.restore();
3786            }
3787
3788            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3789            // Make sure to update invalidateDrawable() when changing this code.
3790            if (dr.mDrawableRight != null) {
3791                canvas.save();
3792                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
3793                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
3794                dr.mDrawableRight.draw(canvas);
3795                canvas.restore();
3796            }
3797
3798            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3799            // Make sure to update invalidateDrawable() when changing this code.
3800            if (dr.mDrawableTop != null) {
3801                canvas.save();
3802                canvas.translate(scrollX + compoundPaddingLeft + (hspace - dr.mDrawableWidthTop) / 2,
3803                        scrollY + mPaddingTop);
3804                dr.mDrawableTop.draw(canvas);
3805                canvas.restore();
3806            }
3807
3808            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3809            // Make sure to update invalidateDrawable() when changing this code.
3810            if (dr.mDrawableBottom != null) {
3811                canvas.save();
3812                canvas.translate(scrollX + compoundPaddingLeft +
3813                        (hspace - dr.mDrawableWidthBottom) / 2,
3814                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
3815                dr.mDrawableBottom.draw(canvas);
3816                canvas.restore();
3817            }
3818        }
3819
3820        if (mPreDrawState == PREDRAW_DONE) {
3821            final ViewTreeObserver observer = getViewTreeObserver();
3822            if (observer != null) {
3823                observer.removeOnPreDrawListener(this);
3824                mPreDrawState = PREDRAW_NOT_REGISTERED;
3825            }
3826        }
3827
3828        int color = mCurTextColor;
3829
3830        if (mLayout == null) {
3831            assumeLayout();
3832        }
3833
3834        Layout layout = mLayout;
3835        int cursorcolor = color;
3836
3837        if (mHint != null && mText.length() == 0) {
3838            if (mHintTextColor != null) {
3839                color = mCurHintTextColor;
3840            }
3841
3842            layout = mHintLayout;
3843        }
3844
3845        mTextPaint.setColor(color);
3846        mTextPaint.drawableState = getDrawableState();
3847
3848        canvas.save();
3849        /*  Would be faster if we didn't have to do this. Can we chop the
3850            (displayable) text so that we don't need to do this ever?
3851        */
3852
3853        int extendedPaddingTop = getExtendedPaddingTop();
3854        int extendedPaddingBottom = getExtendedPaddingBottom();
3855
3856        float clipLeft = compoundPaddingLeft + scrollX;
3857        float clipTop = extendedPaddingTop + scrollY;
3858        float clipRight = right - left - compoundPaddingRight + scrollX;
3859        float clipBottom = bottom - top - extendedPaddingBottom + scrollY;
3860
3861        if (mShadowRadius != 0) {
3862            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
3863            clipRight += Math.max(0, mShadowDx + mShadowRadius);
3864
3865            clipTop += Math.min(0, mShadowDy - mShadowRadius);
3866            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
3867        }
3868
3869        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
3870
3871        int voffsetText = 0;
3872        int voffsetCursor = 0;
3873
3874        // translate in by our padding
3875        {
3876            /* shortcircuit calling getVerticaOffset() */
3877            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
3878                voffsetText = getVerticalOffset(false);
3879                voffsetCursor = getVerticalOffset(true);
3880            }
3881            canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
3882        }
3883
3884        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3885            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
3886                    (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
3887                canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft -
3888                        getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f);
3889            }
3890
3891            if (mMarquee != null && mMarquee.isRunning()) {
3892                canvas.translate(-mMarquee.mScroll, 0.0f);
3893            }
3894        }
3895
3896        Path highlight = null;
3897        int selStart = -1, selEnd = -1;
3898
3899        //  If there is no movement method, then there can be no selection.
3900        //  Check that first and attempt to skip everything having to do with
3901        //  the cursor.
3902        //  XXX This is not strictly true -- a program could set the
3903        //  selection manually if it really wanted to.
3904        if (mMovement != null && (isFocused() || isPressed())) {
3905            selStart = Selection.getSelectionStart(mText);
3906            selEnd = Selection.getSelectionEnd(mText);
3907
3908            if (mCursorVisible && selStart >= 0 && isEnabled()) {
3909                if (mHighlightPath == null)
3910                    mHighlightPath = new Path();
3911
3912                if (selStart == selEnd) {
3913                    if ((SystemClock.uptimeMillis() - mShowCursor) % (2 * BLINK)
3914                        < BLINK) {
3915                        if (mHighlightPathBogus) {
3916                            mHighlightPath.reset();
3917                            mLayout.getCursorPath(selStart, mHighlightPath, mText);
3918                            mHighlightPathBogus = false;
3919                        }
3920
3921                        // XXX should pass to skin instead of drawing directly
3922                        mHighlightPaint.setColor(cursorcolor);
3923                        mHighlightPaint.setStyle(Paint.Style.STROKE);
3924
3925                        highlight = mHighlightPath;
3926                    }
3927                } else {
3928                    if (mHighlightPathBogus) {
3929                        mHighlightPath.reset();
3930                        mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
3931                        mHighlightPathBogus = false;
3932                    }
3933
3934                    // XXX should pass to skin instead of drawing directly
3935                    mHighlightPaint.setColor(mHighlightColor);
3936                    mHighlightPaint.setStyle(Paint.Style.FILL);
3937
3938                    highlight = mHighlightPath;
3939                }
3940            }
3941        }
3942
3943        /*  Comment out until we decide what to do about animations
3944        boolean isLinearTextOn = false;
3945        if (currentTransformation != null) {
3946            isLinearTextOn = mTextPaint.isLinearTextOn();
3947            Matrix m = currentTransformation.getMatrix();
3948            if (!m.isIdentity()) {
3949                // mTextPaint.setLinearTextOn(true);
3950            }
3951        }
3952        */
3953
3954        final InputMethodState ims = mInputMethodState;
3955        if (ims != null && ims.mBatchEditNesting == 0) {
3956            InputMethodManager imm = InputMethodManager.peekInstance();
3957            if (imm != null) {
3958                if (imm.isActive(this)) {
3959                    boolean reported = false;
3960                    if (ims.mContentChanged || ims.mSelectionModeChanged) {
3961                        // We are in extract mode and the content has changed
3962                        // in some way... just report complete new text to the
3963                        // input method.
3964                        reported = reportExtractedText();
3965                    }
3966                    if (!reported && highlight != null) {
3967                        int candStart = -1;
3968                        int candEnd = -1;
3969                        if (mText instanceof Spannable) {
3970                            Spannable sp = (Spannable)mText;
3971                            candStart = EditableInputConnection.getComposingSpanStart(sp);
3972                            candEnd = EditableInputConnection.getComposingSpanEnd(sp);
3973                        }
3974                        imm.updateSelection(this, selStart, selEnd, candStart, candEnd);
3975                    }
3976                }
3977
3978                if (imm.isWatchingCursor(this) && highlight != null) {
3979                    highlight.computeBounds(ims.mTmpRectF, true);
3980                    ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0;
3981
3982                    canvas.getMatrix().mapPoints(ims.mTmpOffset);
3983                    ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]);
3984
3985                    ims.mTmpRectF.offset(0, voffsetCursor - voffsetText);
3986
3987                    ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5),
3988                            (int)(ims.mTmpRectF.top + 0.5),
3989                            (int)(ims.mTmpRectF.right + 0.5),
3990                            (int)(ims.mTmpRectF.bottom + 0.5));
3991
3992                    imm.updateCursor(this,
3993                            ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top,
3994                            ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom);
3995                }
3996            }
3997        }
3998
3999        layout.draw(canvas, highlight, mHighlightPaint, voffsetCursor - voffsetText);
4000
4001        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
4002            canvas.translate((int) mMarquee.getGhostOffset(), 0.0f);
4003            layout.draw(canvas, highlight, mHighlightPaint, voffsetCursor - voffsetText);
4004        }
4005
4006        /*  Comment out until we decide what to do about animations
4007        if (currentTransformation != null) {
4008            mTextPaint.setLinearTextOn(isLinearTextOn);
4009        }
4010        */
4011
4012        canvas.restore();
4013    }
4014
4015    @Override
4016    public void getFocusedRect(Rect r) {
4017        if (mLayout == null) {
4018            super.getFocusedRect(r);
4019            return;
4020        }
4021
4022        int sel = getSelectionEnd();
4023        if (sel < 0) {
4024            super.getFocusedRect(r);
4025            return;
4026        }
4027
4028        int line = mLayout.getLineForOffset(sel);
4029        r.top = mLayout.getLineTop(line);
4030        r.bottom = mLayout.getLineBottom(line);
4031
4032        r.left = (int) mLayout.getPrimaryHorizontal(sel);
4033        r.right = r.left + 1;
4034
4035        // Adjust for padding and gravity.
4036        int paddingLeft = getCompoundPaddingLeft();
4037        int paddingTop = getExtendedPaddingTop();
4038        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4039            paddingTop += getVerticalOffset(false);
4040        }
4041        r.offset(paddingLeft, paddingTop);
4042    }
4043
4044    /**
4045     * Return the number of lines of text, or 0 if the internal Layout has not
4046     * been built.
4047     */
4048    public int getLineCount() {
4049        return mLayout != null ? mLayout.getLineCount() : 0;
4050    }
4051
4052    /**
4053     * Return the baseline for the specified line (0...getLineCount() - 1)
4054     * If bounds is not null, return the top, left, right, bottom extents
4055     * of the specified line in it. If the internal Layout has not been built,
4056     * return 0 and set bounds to (0, 0, 0, 0)
4057     * @param line which line to examine (0..getLineCount() - 1)
4058     * @param bounds Optional. If not null, it returns the extent of the line
4059     * @return the Y-coordinate of the baseline
4060     */
4061    public int getLineBounds(int line, Rect bounds) {
4062        if (mLayout == null) {
4063            if (bounds != null) {
4064                bounds.set(0, 0, 0, 0);
4065            }
4066            return 0;
4067        }
4068        else {
4069            int baseline = mLayout.getLineBounds(line, bounds);
4070
4071            int voffset = getExtendedPaddingTop();
4072            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4073                voffset += getVerticalOffset(true);
4074            }
4075            if (bounds != null) {
4076                bounds.offset(getCompoundPaddingLeft(), voffset);
4077            }
4078            return baseline + voffset;
4079        }
4080    }
4081
4082    @Override
4083    public int getBaseline() {
4084        if (mLayout == null) {
4085            return super.getBaseline();
4086        }
4087
4088        int voffset = 0;
4089        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4090            voffset = getVerticalOffset(true);
4091        }
4092
4093        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
4094    }
4095
4096    @Override
4097    public boolean onKeyDown(int keyCode, KeyEvent event) {
4098        int which = doKeyDown(keyCode, event, null);
4099        if (which == 0) {
4100            // Go through default dispatching.
4101            return super.onKeyDown(keyCode, event);
4102        }
4103
4104        return true;
4105    }
4106
4107    @Override
4108    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
4109        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
4110
4111        int which = doKeyDown(keyCode, down, event);
4112        if (which == 0) {
4113            // Go through default dispatching.
4114            return super.onKeyMultiple(keyCode, repeatCount, event);
4115        }
4116        if (which == -1) {
4117            // Consumed the whole thing.
4118            return true;
4119        }
4120
4121        repeatCount--;
4122
4123        // We are going to dispatch the remaining events to either the input
4124        // or movement method.  To do this, we will just send a repeated stream
4125        // of down and up events until we have done the complete repeatCount.
4126        // It would be nice if those interfaces had an onKeyMultiple() method,
4127        // but adding that is a more complicated change.
4128        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
4129        if (which == 1) {
4130            mInput.onKeyUp(this, (Editable)mText, keyCode, up);
4131            while (--repeatCount > 0) {
4132                mInput.onKeyDown(this, (Editable)mText, keyCode, down);
4133                mInput.onKeyUp(this, (Editable)mText, keyCode, up);
4134            }
4135            if (mError != null && !mErrorWasChanged) {
4136                setError(null, null);
4137            }
4138
4139        } else if (which == 2) {
4140            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4141            while (--repeatCount > 0) {
4142                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
4143                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4144            }
4145        }
4146
4147        return true;
4148    }
4149
4150    /**
4151     * Returns true if pressing ENTER in this field advances focus instead
4152     * of inserting the character.  This is true mostly in single-line fields,
4153     * but also in mail addresses and subjects which will display on multiple
4154     * lines but where it doesn't make sense to insert newlines.
4155     */
4156    private boolean shouldAdvanceFocusOnEnter() {
4157        if (mInput == null) {
4158            return false;
4159        }
4160
4161        if (mSingleLine) {
4162            return true;
4163        }
4164
4165        if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
4166            int variation = mInputType & EditorInfo.TYPE_MASK_VARIATION;
4167
4168            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS ||
4169                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
4170                return true;
4171            }
4172        }
4173
4174        return false;
4175    }
4176
4177    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
4178        if (!isEnabled()) {
4179            return 0;
4180        }
4181
4182        switch (keyCode) {
4183            case KeyEvent.KEYCODE_ENTER:
4184                // If ALT modifier is held, then we always insert a
4185                // newline character.
4186                if ((event.getMetaState()&KeyEvent.META_ALT_ON) == 0) {
4187
4188                    // When mInputContentType is set, we know that we are
4189                    // running in a "modern" cupcake environment, so don't need
4190                    // to worry about the application trying to capture
4191                    // enter key events.
4192                    if (mInputContentType != null) {
4193
4194                        // If there is an action listener, given them a
4195                        // chance to consume the event.
4196                        if (mInputContentType.onEditorActionListener != null &&
4197                                mInputContentType.onEditorActionListener.onEditorAction(
4198                                this, EditorInfo.IME_NULL, event)) {
4199                            mInputContentType.enterDown = true;
4200                            // We are consuming the enter key for them.
4201                            return -1;
4202                        }
4203                    }
4204
4205                    // If our editor should move focus when enter is pressed, or
4206                    // this is a generated event from an IME action button, then
4207                    // don't let it be inserted into the text.
4208                    if ((event.getFlags()&KeyEvent.FLAG_EDITOR_ACTION) != 0
4209                            || shouldAdvanceFocusOnEnter()) {
4210                        return -1;
4211                    }
4212                }
4213                break;
4214
4215            case KeyEvent.KEYCODE_DPAD_CENTER:
4216                if (shouldAdvanceFocusOnEnter()) {
4217                    return 0;
4218                }
4219        }
4220
4221        if (mInput != null) {
4222            /*
4223             * Keep track of what the error was before doing the input
4224             * so that if an input filter changed the error, we leave
4225             * that error showing.  Otherwise, we take down whatever
4226             * error was showing when the user types something.
4227             */
4228            mErrorWasChanged = false;
4229
4230            boolean doDown = true;
4231            if (otherEvent != null) {
4232                try {
4233                    beginBatchEdit();
4234                    boolean handled = mInput.onKeyOther(this, (Editable) mText,
4235                            otherEvent);
4236                    if (mError != null && !mErrorWasChanged) {
4237                        setError(null, null);
4238                    }
4239                    doDown = false;
4240                    if (handled) {
4241                        return -1;
4242                    }
4243                } catch (AbstractMethodError e) {
4244                    // onKeyOther was added after 1.0, so if it isn't
4245                    // implemented we need to try to dispatch as a regular down.
4246                } finally {
4247                    endBatchEdit();
4248                }
4249            }
4250
4251            if (doDown) {
4252                beginBatchEdit();
4253                if (mInput.onKeyDown(this, (Editable) mText, keyCode, event)) {
4254                    endBatchEdit();
4255                    if (mError != null && !mErrorWasChanged) {
4256                        setError(null, null);
4257                    }
4258                    return 1;
4259                }
4260                endBatchEdit();
4261            }
4262        }
4263
4264        // bug 650865: sometimes we get a key event before a layout.
4265        // don't try to move around if we don't know the layout.
4266
4267        if (mMovement != null && mLayout != null) {
4268            boolean doDown = true;
4269            if (otherEvent != null) {
4270                try {
4271                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
4272                            otherEvent);
4273                    doDown = false;
4274                    if (handled) {
4275                        return -1;
4276                    }
4277                } catch (AbstractMethodError e) {
4278                    // onKeyOther was added after 1.0, so if it isn't
4279                    // implemented we need to try to dispatch as a regular down.
4280                }
4281            }
4282            if (doDown) {
4283                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
4284                    return 2;
4285            }
4286        }
4287
4288        return 0;
4289    }
4290
4291    @Override
4292    public boolean onKeyUp(int keyCode, KeyEvent event) {
4293        if (!isEnabled()) {
4294            return super.onKeyUp(keyCode, event);
4295        }
4296
4297        switch (keyCode) {
4298            case KeyEvent.KEYCODE_DPAD_CENTER:
4299                /*
4300                 * If there is a click listener, just call through to
4301                 * super, which will invoke it.
4302                 *
4303                 * If there isn't a click listener, try to show the soft
4304                 * input method.  (It will also
4305                 * call performClick(), but that won't do anything in
4306                 * this case.)
4307                 */
4308                if (mOnClickListener == null) {
4309                    if (mMovement != null && mText instanceof Editable
4310                            && mLayout != null && onCheckIsTextEditor()) {
4311                        InputMethodManager imm = (InputMethodManager)
4312                                getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
4313                        imm.showSoftInput(this, 0);
4314                    }
4315                }
4316                return super.onKeyUp(keyCode, event);
4317
4318            case KeyEvent.KEYCODE_ENTER:
4319                if (mInputContentType != null
4320                        && mInputContentType.onEditorActionListener != null
4321                        && mInputContentType.enterDown) {
4322                    mInputContentType.enterDown = false;
4323                    if (mInputContentType.onEditorActionListener.onEditorAction(
4324                            this, EditorInfo.IME_NULL, event)) {
4325                        return true;
4326                    }
4327                }
4328
4329                if ((event.getFlags()&KeyEvent.FLAG_EDITOR_ACTION) != 0
4330                        || shouldAdvanceFocusOnEnter()) {
4331                    /*
4332                     * If there is a click listener, just call through to
4333                     * super, which will invoke it.
4334                     *
4335                     * If there isn't a click listener, try to advance focus,
4336                     * but still call through to super, which will reset the
4337                     * pressed state and longpress state.  (It will also
4338                     * call performClick(), but that won't do anything in
4339                     * this case.)
4340                     */
4341                    if (mOnClickListener == null) {
4342                        View v = focusSearch(FOCUS_DOWN);
4343
4344                        if (v != null) {
4345                            if (!v.requestFocus(FOCUS_DOWN)) {
4346                                throw new IllegalStateException("focus search returned a view " +
4347                                        "that wasn't able to take focus!");
4348                            }
4349
4350                            /*
4351                             * Return true because we handled the key; super
4352                             * will return false because there was no click
4353                             * listener.
4354                             */
4355                            super.onKeyUp(keyCode, event);
4356                            return true;
4357                        } else if ((event.getFlags()
4358                                & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
4359                            // No target for next focus, but make sure the IME
4360                            // if this came from it.
4361                            InputMethodManager imm = InputMethodManager.peekInstance();
4362                            if (imm != null) {
4363                                imm.hideSoftInputFromWindow(getWindowToken(), 0);
4364                            }
4365                        }
4366                    }
4367
4368                    return super.onKeyUp(keyCode, event);
4369                }
4370        }
4371
4372        if (mInput != null)
4373            if (mInput.onKeyUp(this, (Editable) mText, keyCode, event))
4374                return true;
4375
4376        if (mMovement != null && mLayout != null)
4377            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
4378                return true;
4379
4380        return super.onKeyUp(keyCode, event);
4381    }
4382
4383    @Override public boolean onCheckIsTextEditor() {
4384        return mInputType != EditorInfo.TYPE_NULL;
4385    }
4386
4387    @Override public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
4388        if (onCheckIsTextEditor()) {
4389            if (mInputMethodState == null) {
4390                mInputMethodState = new InputMethodState();
4391            }
4392            outAttrs.inputType = mInputType;
4393            if (mInputContentType != null) {
4394                outAttrs.imeOptions = mInputContentType.imeOptions;
4395                outAttrs.privateImeOptions = mInputContentType.privateImeOptions;
4396                outAttrs.actionLabel = mInputContentType.imeActionLabel;
4397                outAttrs.actionId = mInputContentType.imeActionId;
4398                outAttrs.extras = mInputContentType.extras;
4399            } else {
4400                outAttrs.imeOptions = EditorInfo.IME_NULL;
4401            }
4402            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
4403                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
4404                if (focusSearch(FOCUS_DOWN) != null) {
4405                    // An action has not been set, but the enter key will move to
4406                    // the next focus, so set the action to that.
4407                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
4408                } else {
4409                    // An action has not been set, and there is no focus to move
4410                    // to, so let's just supply a "done" action.
4411                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
4412                }
4413                if (!shouldAdvanceFocusOnEnter()) {
4414                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
4415                }
4416            }
4417            if ((outAttrs.inputType & (InputType.TYPE_MASK_CLASS
4418                    | InputType.TYPE_TEXT_FLAG_MULTI_LINE))
4419                    == (InputType.TYPE_CLASS_TEXT
4420                            | InputType.TYPE_TEXT_FLAG_MULTI_LINE)) {
4421                // Multi-line text editors should always show an enter key.
4422                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
4423            }
4424            outAttrs.hintText = mHint;
4425            if (mText instanceof Editable) {
4426                InputConnection ic = new EditableInputConnection(this);
4427                outAttrs.initialSelStart = Selection.getSelectionStart(mText);
4428                outAttrs.initialSelEnd = Selection.getSelectionEnd(mText);
4429                outAttrs.initialCapsMode = ic.getCursorCapsMode(mInputType);
4430                return ic;
4431            }
4432        }
4433        return null;
4434    }
4435
4436    /**
4437     * If this TextView contains editable content, extract a portion of it
4438     * based on the information in <var>request</var> in to <var>outText</var>.
4439     * @return Returns true if the text was successfully extracted, else false.
4440     */
4441    public boolean extractText(ExtractedTextRequest request,
4442            ExtractedText outText) {
4443        return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN,
4444                EXTRACT_UNKNOWN, outText);
4445    }
4446
4447    static final int EXTRACT_NOTHING = -2;
4448    static final int EXTRACT_UNKNOWN = -1;
4449
4450    boolean extractTextInternal(ExtractedTextRequest request,
4451            int partialStartOffset, int partialEndOffset, int delta,
4452            ExtractedText outText) {
4453        final CharSequence content = mText;
4454        if (content != null) {
4455            if (partialStartOffset != EXTRACT_NOTHING) {
4456                final int N = content.length();
4457                if (partialStartOffset < 0) {
4458                    outText.partialStartOffset = outText.partialEndOffset = -1;
4459                    partialStartOffset = 0;
4460                    partialEndOffset = N;
4461                } else {
4462                    // Adjust offsets to ensure we contain full spans.
4463                    if (content instanceof Spanned) {
4464                        Spanned spanned = (Spanned)content;
4465                        Object[] spans = spanned.getSpans(partialStartOffset,
4466                                partialEndOffset, ParcelableSpan.class);
4467                        int i = spans.length;
4468                        while (i > 0) {
4469                            i--;
4470                            int j = spanned.getSpanStart(spans[i]);
4471                            if (j < partialStartOffset) partialStartOffset = j;
4472                            j = spanned.getSpanEnd(spans[i]);
4473                            if (j > partialEndOffset) partialEndOffset = j;
4474                        }
4475                    }
4476                    outText.partialStartOffset = partialStartOffset;
4477                    outText.partialEndOffset = partialEndOffset;
4478                    // Now use the delta to determine the actual amount of text
4479                    // we need.
4480                    partialEndOffset += delta;
4481                    if (partialEndOffset > N) {
4482                        partialEndOffset = N;
4483                    } else if (partialEndOffset < 0) {
4484                        partialEndOffset = 0;
4485                    }
4486                }
4487                if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) {
4488                    outText.text = content.subSequence(partialStartOffset,
4489                            partialEndOffset);
4490                } else {
4491                    outText.text = TextUtils.substring(content, partialStartOffset,
4492                            partialEndOffset);
4493                }
4494            }
4495            outText.flags = 0;
4496            if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) {
4497                outText.flags |= ExtractedText.FLAG_SELECTING;
4498            }
4499            if (mSingleLine) {
4500                outText.flags |= ExtractedText.FLAG_SINGLE_LINE;
4501            }
4502            outText.startOffset = 0;
4503            outText.selectionStart = Selection.getSelectionStart(content);
4504            outText.selectionEnd = Selection.getSelectionEnd(content);
4505            return true;
4506        }
4507        return false;
4508    }
4509
4510    boolean reportExtractedText() {
4511        final InputMethodState ims = mInputMethodState;
4512        if (ims != null) {
4513            final boolean contentChanged = ims.mContentChanged;
4514            if (contentChanged || ims.mSelectionModeChanged) {
4515                ims.mContentChanged = false;
4516                ims.mSelectionModeChanged = false;
4517                final ExtractedTextRequest req = mInputMethodState.mExtracting;
4518                if (req != null) {
4519                    InputMethodManager imm = InputMethodManager.peekInstance();
4520                    if (imm != null) {
4521                        if (DEBUG_EXTRACT) Log.v(TAG, "Retrieving extracted start="
4522                                + ims.mChangedStart + " end=" + ims.mChangedEnd
4523                                + " delta=" + ims.mChangedDelta);
4524                        if (ims.mChangedStart < 0 && !contentChanged) {
4525                            ims.mChangedStart = EXTRACT_NOTHING;
4526                        }
4527                        if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd,
4528                                ims.mChangedDelta, ims.mTmpExtracted)) {
4529                            if (DEBUG_EXTRACT) Log.v(TAG, "Reporting extracted start="
4530                                    + ims.mTmpExtracted.partialStartOffset
4531                                    + " end=" + ims.mTmpExtracted.partialEndOffset
4532                                    + ": " + ims.mTmpExtracted.text);
4533                            imm.updateExtractedText(this, req.token,
4534                                    mInputMethodState.mTmpExtracted);
4535                            return true;
4536                        }
4537                    }
4538                }
4539            }
4540        }
4541        return false;
4542    }
4543
4544    /**
4545     * This is used to remove all style-impacting spans from text before new
4546     * extracted text is being replaced into it, so that we don't have any
4547     * lingering spans applied during the replace.
4548     */
4549    static void removeParcelableSpans(Spannable spannable, int start, int end) {
4550        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
4551        int i = spans.length;
4552        while (i > 0) {
4553            i--;
4554            spannable.removeSpan(spans[i]);
4555        }
4556    }
4557
4558    /**
4559     * Apply to this text view the given extracted text, as previously
4560     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
4561     */
4562    public void setExtractedText(ExtractedText text) {
4563        Editable content = getEditableText();
4564        if (text.text != null) {
4565            if (content == null) {
4566                setText(text.text, TextView.BufferType.EDITABLE);
4567            } else if (text.partialStartOffset < 0) {
4568                removeParcelableSpans(content, 0, content.length());
4569                content.replace(0, content.length(), text.text);
4570            } else {
4571                final int N = content.length();
4572                int start = text.partialStartOffset;
4573                if (start > N) start = N;
4574                int end = text.partialEndOffset;
4575                if (end > N) end = N;
4576                removeParcelableSpans(content, start, end);
4577                content.replace(start, end, text.text);
4578            }
4579        }
4580
4581        // Now set the selection position...  make sure it is in range, to
4582        // avoid crashes.  If this is a partial update, it is possible that
4583        // the underlying text may have changed, causing us problems here.
4584        // Also we just don't want to trust clients to do the right thing.
4585        Spannable sp = (Spannable)getText();
4586        final int N = sp.length();
4587        int start = text.selectionStart;
4588        if (start < 0) start = 0;
4589        else if (start > N) start = N;
4590        int end = text.selectionEnd;
4591        if (end < 0) end = 0;
4592        else if (end > N) end = N;
4593        Selection.setSelection(sp, start, end);
4594
4595        // Finally, update the selection mode.
4596        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
4597            MetaKeyKeyListener.startSelecting(this, sp);
4598        } else {
4599            MetaKeyKeyListener.stopSelecting(this, sp);
4600        }
4601    }
4602
4603    /**
4604     * @hide
4605     */
4606    public void setExtracting(ExtractedTextRequest req) {
4607        if (mInputMethodState != null) {
4608            mInputMethodState.mExtracting = req;
4609        }
4610    }
4611
4612    /**
4613     * Called by the framework in response to a text completion from
4614     * the current input method, provided by it calling
4615     * {@link InputConnection#commitCompletion
4616     * InputConnection.commitCompletion()}.  The default implementation does
4617     * nothing; text views that are supporting auto-completion should override
4618     * this to do their desired behavior.
4619     *
4620     * @param text The auto complete text the user has selected.
4621     */
4622    public void onCommitCompletion(CompletionInfo text) {
4623    }
4624
4625    public void beginBatchEdit() {
4626        final InputMethodState ims = mInputMethodState;
4627        if (ims != null) {
4628            int nesting = ++ims.mBatchEditNesting;
4629            if (nesting == 1) {
4630                ims.mCursorChanged = false;
4631                ims.mChangedDelta = 0;
4632                if (ims.mContentChanged) {
4633                    // We already have a pending change from somewhere else,
4634                    // so turn this into a full update.
4635                    ims.mChangedStart = 0;
4636                    ims.mChangedEnd = mText.length();
4637                } else {
4638                    ims.mChangedStart = EXTRACT_UNKNOWN;
4639                    ims.mChangedEnd = EXTRACT_UNKNOWN;
4640                    ims.mContentChanged = false;
4641                }
4642                onBeginBatchEdit();
4643            }
4644        }
4645    }
4646
4647    public void endBatchEdit() {
4648        final InputMethodState ims = mInputMethodState;
4649        if (ims != null) {
4650            int nesting = --ims.mBatchEditNesting;
4651            if (nesting == 0) {
4652                finishBatchEdit(ims);
4653            }
4654        }
4655    }
4656
4657    void ensureEndedBatchEdit() {
4658        final InputMethodState ims = mInputMethodState;
4659        if (ims != null && ims.mBatchEditNesting != 0) {
4660            ims.mBatchEditNesting = 0;
4661            finishBatchEdit(ims);
4662        }
4663    }
4664
4665    void finishBatchEdit(final InputMethodState ims) {
4666        onEndBatchEdit();
4667
4668        if (ims.mContentChanged || ims.mSelectionModeChanged) {
4669            updateAfterEdit();
4670            reportExtractedText();
4671        } else if (ims.mCursorChanged) {
4672            // Cheezy way to get us to report the current cursor location.
4673            invalidateCursor();
4674        }
4675    }
4676
4677    void updateAfterEdit() {
4678        invalidate();
4679        int curs = Selection.getSelectionStart(mText);
4680
4681        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) ==
4682                             Gravity.BOTTOM) {
4683            registerForPreDraw();
4684        }
4685
4686        if (curs >= 0) {
4687            mHighlightPathBogus = true;
4688
4689            if (isFocused()) {
4690                mShowCursor = SystemClock.uptimeMillis();
4691                makeBlink();
4692            }
4693        }
4694
4695        checkForResize();
4696    }
4697
4698    /**
4699     * Called by the framework in response to a request to begin a batch
4700     * of edit operations through a call to link {@link #beginBatchEdit()}.
4701     */
4702    public void onBeginBatchEdit() {
4703    }
4704
4705    /**
4706     * Called by the framework in response to a request to end a batch
4707     * of edit operations through a call to link {@link #endBatchEdit}.
4708     */
4709    public void onEndBatchEdit() {
4710    }
4711
4712    /**
4713     * Called by the framework in response to a private command from the
4714     * current method, provided by it calling
4715     * {@link InputConnection#performPrivateCommand
4716     * InputConnection.performPrivateCommand()}.
4717     *
4718     * @param action The action name of the command.
4719     * @param data Any additional data for the command.  This may be null.
4720     * @return Return true if you handled the command, else false.
4721     */
4722    public boolean onPrivateIMECommand(String action, Bundle data) {
4723        return false;
4724    }
4725
4726    private void nullLayouts() {
4727        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
4728            mSavedLayout = (BoringLayout) mLayout;
4729        }
4730        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
4731            mSavedHintLayout = (BoringLayout) mHintLayout;
4732        }
4733
4734        mLayout = mHintLayout = null;
4735    }
4736
4737    /**
4738     * Make a new Layout based on the already-measured size of the view,
4739     * on the assumption that it was measured correctly at some point.
4740     */
4741    private void assumeLayout() {
4742        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
4743
4744        if (width < 1) {
4745            width = 0;
4746        }
4747
4748        int physicalWidth = width;
4749
4750        if (mHorizontallyScrolling) {
4751            width = VERY_WIDE;
4752        }
4753
4754        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
4755                      physicalWidth, false);
4756    }
4757
4758    /**
4759     * The width passed in is now the desired layout width,
4760     * not the full view width with padding.
4761     * {@hide}
4762     */
4763    protected void makeNewLayout(int w, int hintWidth,
4764                                 BoringLayout.Metrics boring,
4765                                 BoringLayout.Metrics hintBoring,
4766                                 int ellipsisWidth, boolean bringIntoView) {
4767        stopMarquee();
4768
4769        mHighlightPathBogus = true;
4770
4771        if (w < 0) {
4772            w = 0;
4773        }
4774        if (hintWidth < 0) {
4775            hintWidth = 0;
4776        }
4777
4778        Layout.Alignment alignment;
4779        switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
4780            case Gravity.CENTER_HORIZONTAL:
4781                alignment = Layout.Alignment.ALIGN_CENTER;
4782                break;
4783
4784            case Gravity.RIGHT:
4785                alignment = Layout.Alignment.ALIGN_OPPOSITE;
4786                break;
4787
4788            default:
4789                alignment = Layout.Alignment.ALIGN_NORMAL;
4790        }
4791
4792        if (mText instanceof Spannable) {
4793            mLayout = new DynamicLayout(mText, mTransformed, mTextPaint, w,
4794                    alignment, mSpacingMult,
4795                    mSpacingAdd, mIncludePad, mEllipsize,
4796                    ellipsisWidth);
4797        } else {
4798            if (boring == UNKNOWN_BORING) {
4799                boring = BoringLayout.isBoring(mTransformed, mTextPaint,
4800                                               mBoring);
4801                if (boring != null) {
4802                    mBoring = boring;
4803                }
4804            }
4805
4806            if (boring != null) {
4807                if (boring.width <= w &&
4808                    (mEllipsize == null || boring.width <= ellipsisWidth)) {
4809                    if (mSavedLayout != null) {
4810                        mLayout = mSavedLayout.
4811                                replaceOrMake(mTransformed, mTextPaint,
4812                                w, alignment, mSpacingMult, mSpacingAdd,
4813                                boring, mIncludePad);
4814                    } else {
4815                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
4816                                w, alignment, mSpacingMult, mSpacingAdd,
4817                                boring, mIncludePad);
4818                    }
4819                    // Log.e("aaa", "Boring: " + mTransformed);
4820
4821                    mSavedLayout = (BoringLayout) mLayout;
4822                } else if (mEllipsize != null && boring.width <= w) {
4823                    if (mSavedLayout != null) {
4824                        mLayout = mSavedLayout.
4825                                replaceOrMake(mTransformed, mTextPaint,
4826                                w, alignment, mSpacingMult, mSpacingAdd,
4827                                boring, mIncludePad, mEllipsize,
4828                                ellipsisWidth);
4829                    } else {
4830                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
4831                                w, alignment, mSpacingMult, mSpacingAdd,
4832                                boring, mIncludePad, mEllipsize,
4833                                ellipsisWidth);
4834                    }
4835                } else if (mEllipsize != null) {
4836                    mLayout = new StaticLayout(mTransformed,
4837                                0, mTransformed.length(),
4838                                mTextPaint, w, alignment, mSpacingMult,
4839                                mSpacingAdd, mIncludePad, mEllipsize,
4840                                ellipsisWidth);
4841                } else {
4842                    mLayout = new StaticLayout(mTransformed, mTextPaint,
4843                            w, alignment, mSpacingMult, mSpacingAdd,
4844                            mIncludePad);
4845                    // Log.e("aaa", "Boring but wide: " + mTransformed);
4846                }
4847            } else if (mEllipsize != null) {
4848                mLayout = new StaticLayout(mTransformed,
4849                            0, mTransformed.length(),
4850                            mTextPaint, w, alignment, mSpacingMult,
4851                            mSpacingAdd, mIncludePad, mEllipsize,
4852                            ellipsisWidth);
4853            } else {
4854                mLayout = new StaticLayout(mTransformed, mTextPaint,
4855                        w, alignment, mSpacingMult, mSpacingAdd,
4856                        mIncludePad);
4857            }
4858        }
4859
4860        mHintLayout = null;
4861
4862        if (mHint != null) {
4863            if (hintBoring == UNKNOWN_BORING) {
4864                hintBoring = BoringLayout.isBoring(mHint, mTextPaint,
4865                                                   mHintBoring);
4866                if (hintBoring != null) {
4867                    mHintBoring = hintBoring;
4868                }
4869            }
4870
4871            if (hintBoring != null) {
4872                if (hintBoring.width <= hintWidth) {
4873                    if (mSavedHintLayout != null) {
4874                        mHintLayout = mSavedHintLayout.
4875                                replaceOrMake(mHint, mTextPaint,
4876                                hintWidth, alignment, mSpacingMult,
4877                                mSpacingAdd, hintBoring, mIncludePad);
4878                    } else {
4879                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
4880                                hintWidth, alignment, mSpacingMult,
4881                                mSpacingAdd, hintBoring, mIncludePad);
4882                    }
4883
4884                    mSavedHintLayout = (BoringLayout) mHintLayout;
4885                } else {
4886                    mHintLayout = new StaticLayout(mHint, mTextPaint,
4887                            hintWidth, alignment, mSpacingMult, mSpacingAdd,
4888                            mIncludePad);
4889                }
4890            } else {
4891                mHintLayout = new StaticLayout(mHint, mTextPaint,
4892                        hintWidth, alignment, mSpacingMult, mSpacingAdd,
4893                        mIncludePad);
4894            }
4895        }
4896
4897        if (bringIntoView) {
4898            registerForPreDraw();
4899        }
4900
4901        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4902            if (!compressText(ellipsisWidth)) {
4903                final int height = mLayoutParams.height;
4904                // If the size of the view does not depend on the size of the text, try to
4905                // start the marquee immediately
4906                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.FILL_PARENT) {
4907                    startMarquee();
4908                } else {
4909                    // Defer the start of the marquee until we know our width (see setFrame())
4910                    mRestartMarquee = true;
4911                }
4912            }
4913        }
4914    }
4915
4916    private boolean compressText(float width) {
4917        // Only compress the text if it hasn't been compressed by the previous pass
4918        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
4919                mTextPaint.getTextScaleX() == 1.0f) {
4920            final float textWidth = mLayout.getLineWidth(0);
4921            final float overflow = (textWidth + 1.0f - width) / width;
4922            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
4923                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
4924                post(new Runnable() {
4925                    public void run() {
4926                        requestLayout();
4927                    }
4928                });
4929                return true;
4930            }
4931        }
4932
4933        return false;
4934    }
4935
4936    private static int desired(Layout layout) {
4937        int n = layout.getLineCount();
4938        CharSequence text = layout.getText();
4939        float max = 0;
4940
4941        // if any line was wrapped, we can't use it.
4942        // but it's ok for the last line not to have a newline
4943
4944        for (int i = 0; i < n - 1; i++) {
4945            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
4946                return -1;
4947        }
4948
4949        for (int i = 0; i < n; i++) {
4950            max = Math.max(max, layout.getLineWidth(i));
4951        }
4952
4953        return (int) FloatMath.ceil(max);
4954    }
4955
4956    /**
4957     * Set whether the TextView includes extra top and bottom padding to make
4958     * room for accents that go above the normal ascent and descent.
4959     * The default is true.
4960     *
4961     * @attr ref android.R.styleable#TextView_includeFontPadding
4962     */
4963    public void setIncludeFontPadding(boolean includepad) {
4964        mIncludePad = includepad;
4965
4966        if (mLayout != null) {
4967            nullLayouts();
4968            requestLayout();
4969            invalidate();
4970        }
4971    }
4972
4973    private static final BoringLayout.Metrics UNKNOWN_BORING =
4974                                                new BoringLayout.Metrics();
4975
4976    @Override
4977    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
4978        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
4979        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
4980        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
4981        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
4982
4983        int width;
4984        int height;
4985
4986        BoringLayout.Metrics boring = UNKNOWN_BORING;
4987        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
4988
4989        int des = -1;
4990        boolean fromexisting = false;
4991
4992        if (widthMode == MeasureSpec.EXACTLY) {
4993            // Parent has told us how big to be. So be it.
4994            width = widthSize;
4995        } else {
4996            if (mLayout != null && mEllipsize == null) {
4997                des = desired(mLayout);
4998            }
4999
5000            if (des < 0) {
5001                boring = BoringLayout.isBoring(mTransformed, mTextPaint,
5002                                               mBoring);
5003                if (boring != null) {
5004                    mBoring = boring;
5005                }
5006            } else {
5007                fromexisting = true;
5008            }
5009
5010            if (boring == null || boring == UNKNOWN_BORING) {
5011                if (des < 0) {
5012                    des = (int) FloatMath.ceil(Layout.
5013                                    getDesiredWidth(mTransformed, mTextPaint));
5014                }
5015
5016                width = des;
5017            } else {
5018                width = boring.width;
5019            }
5020
5021            final Drawables dr = mDrawables;
5022            if (dr != null) {
5023                width = Math.max(width, dr.mDrawableWidthTop);
5024                width = Math.max(width, dr.mDrawableWidthBottom);
5025            }
5026
5027            if (mHint != null) {
5028                int hintDes = -1;
5029                int hintWidth;
5030
5031                if (mHintLayout != null) {
5032                    hintDes = desired(mHintLayout);
5033                }
5034
5035                if (hintDes < 0) {
5036                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint,
5037                                                       mHintBoring);
5038                    if (hintBoring != null) {
5039                        mHintBoring = hintBoring;
5040                    }
5041                }
5042
5043                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
5044                    if (hintDes < 0) {
5045                        hintDes = (int) FloatMath.ceil(Layout.
5046                                        getDesiredWidth(mHint, mTextPaint));
5047                    }
5048
5049                    hintWidth = hintDes;
5050                } else {
5051                    hintWidth = hintBoring.width;
5052                }
5053
5054                if (hintWidth > width) {
5055                    width = hintWidth;
5056                }
5057            }
5058
5059            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
5060
5061            if (mMaxWidthMode == EMS) {
5062                width = Math.min(width, mMaxWidth * getLineHeight());
5063            } else {
5064                width = Math.min(width, mMaxWidth);
5065            }
5066
5067            if (mMinWidthMode == EMS) {
5068                width = Math.max(width, mMinWidth * getLineHeight());
5069            } else {
5070                width = Math.max(width, mMinWidth);
5071            }
5072
5073            // Check against our minimum width
5074            width = Math.max(width, getSuggestedMinimumWidth());
5075
5076            if (widthMode == MeasureSpec.AT_MOST) {
5077                width = Math.min(widthSize, width);
5078            }
5079        }
5080
5081        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
5082        int unpaddedWidth = want;
5083        int hintWant = want;
5084
5085        if (mHorizontallyScrolling)
5086            want = VERY_WIDE;
5087
5088        int hintWidth = mHintLayout == null ? hintWant : mHintLayout.getWidth();
5089
5090        if (mLayout == null) {
5091            makeNewLayout(want, hintWant, boring, hintBoring,
5092                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(),
5093                          false);
5094        } else if ((mLayout.getWidth() != want) || (hintWidth != hintWant) ||
5095                   (mLayout.getEllipsizedWidth() !=
5096                        width - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
5097            if (mHint == null && mEllipsize == null &&
5098                    want > mLayout.getWidth() &&
5099                    (mLayout instanceof BoringLayout ||
5100                        (fromexisting && des >= 0 && des <= want))) {
5101                mLayout.increaseWidthTo(want);
5102            } else {
5103                makeNewLayout(want, hintWant, boring, hintBoring,
5104                              width - getCompoundPaddingLeft() - getCompoundPaddingRight(),
5105                              false);
5106            }
5107        } else {
5108            // Width has not changed.
5109        }
5110
5111        if (heightMode == MeasureSpec.EXACTLY) {
5112            // Parent has told us how big to be. So be it.
5113            height = heightSize;
5114            mDesiredHeightAtMeasure = -1;
5115        } else {
5116            int desired = getDesiredHeight();
5117
5118            height = desired;
5119            mDesiredHeightAtMeasure = desired;
5120
5121            if (heightMode == MeasureSpec.AT_MOST) {
5122                height = Math.min(desired, height);
5123            }
5124        }
5125
5126        int unpaddedHeight = height - getCompoundPaddingTop() -
5127                                getCompoundPaddingBottom();
5128        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
5129            unpaddedHeight = Math.min(unpaddedHeight,
5130                                      mLayout.getLineTop(mMaximum));
5131        }
5132
5133        /*
5134         * We didn't let makeNewLayout() register to bring the cursor into view,
5135         * so do it here if there is any possibility that it is needed.
5136         */
5137        if (mMovement != null ||
5138            mLayout.getWidth() > unpaddedWidth ||
5139            mLayout.getHeight() > unpaddedHeight) {
5140            registerForPreDraw();
5141        } else {
5142            scrollTo(0, 0);
5143        }
5144
5145        setMeasuredDimension(width, height);
5146    }
5147
5148    private int getDesiredHeight() {
5149        return Math.max(getDesiredHeight(mLayout, true),
5150                        getDesiredHeight(mHintLayout, false));
5151    }
5152
5153    private int getDesiredHeight(Layout layout, boolean cap) {
5154        if (layout == null) {
5155            return 0;
5156        }
5157
5158        int linecount = layout.getLineCount();
5159        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
5160        int desired = layout.getLineTop(linecount);
5161
5162        final Drawables dr = mDrawables;
5163        if (dr != null) {
5164            desired = Math.max(desired, dr.mDrawableHeightLeft);
5165            desired = Math.max(desired, dr.mDrawableHeightRight);
5166        }
5167
5168        desired += pad;
5169
5170        if (mMaxMode == LINES) {
5171            /*
5172             * Don't cap the hint to a certain number of lines.
5173             * (Do cap it, though, if we have a maximum pixel height.)
5174             */
5175            if (cap) {
5176                if (linecount > mMaximum) {
5177                    desired = layout.getLineTop(mMaximum) +
5178                              layout.getBottomPadding();
5179
5180                    if (dr != null) {
5181                        desired = Math.max(desired, dr.mDrawableHeightLeft);
5182                        desired = Math.max(desired, dr.mDrawableHeightRight);
5183                    }
5184
5185                    desired += pad;
5186                    linecount = mMaximum;
5187                }
5188            }
5189        } else {
5190            desired = Math.min(desired, mMaximum);
5191        }
5192
5193        if (mMinMode == LINES) {
5194            if (linecount < mMinimum) {
5195                desired += getLineHeight() * (mMinimum - linecount);
5196            }
5197        } else {
5198            desired = Math.max(desired, mMinimum);
5199        }
5200
5201        // Check against our minimum height
5202        desired = Math.max(desired, getSuggestedMinimumHeight());
5203
5204        return desired;
5205    }
5206
5207    /**
5208     * Check whether a change to the existing text layout requires a
5209     * new view layout.
5210     */
5211    private void checkForResize() {
5212        boolean sizeChanged = false;
5213
5214        if (mLayout != null) {
5215            // Check if our width changed
5216            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
5217                sizeChanged = true;
5218                invalidate();
5219            }
5220
5221            // Check if our height changed
5222            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
5223                int desiredHeight = getDesiredHeight();
5224
5225                if (desiredHeight != this.getHeight()) {
5226                    sizeChanged = true;
5227                }
5228            } else if (mLayoutParams.height == LayoutParams.FILL_PARENT) {
5229                if (mDesiredHeightAtMeasure >= 0) {
5230                    int desiredHeight = getDesiredHeight();
5231
5232                    if (desiredHeight != mDesiredHeightAtMeasure) {
5233                        sizeChanged = true;
5234                    }
5235                }
5236            }
5237        }
5238
5239        if (sizeChanged) {
5240            requestLayout();
5241            // caller will have already invalidated
5242        }
5243    }
5244
5245    /**
5246     * Check whether entirely new text requires a new view layout
5247     * or merely a new text layout.
5248     */
5249    private void checkForRelayout() {
5250        // If we have a fixed width, we can just swap in a new text layout
5251        // if the text height stays the same or if the view height is fixed.
5252
5253        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
5254                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
5255                (mHint == null || mHintLayout != null) &&
5256                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
5257            // Static width, so try making a new text layout.
5258
5259            int oldht = mLayout.getHeight();
5260            int want = mLayout.getWidth();
5261            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
5262
5263            /*
5264             * No need to bring the text into view, since the size is not
5265             * changing (unless we do the requestLayout(), in which case it
5266             * will happen at measure).
5267             */
5268            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
5269                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
5270
5271            // In a fixed-height view, so use our new text layout.
5272            if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
5273                mLayoutParams.height != LayoutParams.FILL_PARENT) {
5274                invalidate();
5275                return;
5276            }
5277
5278            // Dynamic height, but height has stayed the same,
5279            // so use our new text layout.
5280            if (mLayout.getHeight() == oldht &&
5281                (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
5282                invalidate();
5283                return;
5284            }
5285
5286            // We lose: the height has changed and we have a dynamic height.
5287            // Request a new view layout using our new text layout.
5288            requestLayout();
5289            invalidate();
5290        } else {
5291            // Dynamic width, so we have no choice but to request a new
5292            // view layout with a new text layout.
5293
5294            nullLayouts();
5295            requestLayout();
5296            invalidate();
5297        }
5298    }
5299
5300    /**
5301     * Returns true if anything changed.
5302     */
5303    private boolean bringTextIntoView() {
5304        int line = 0;
5305        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5306            line = mLayout.getLineCount() - 1;
5307        }
5308
5309        Layout.Alignment a = mLayout.getParagraphAlignment(line);
5310        int dir = mLayout.getParagraphDirection(line);
5311        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5312        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
5313        int ht = mLayout.getHeight();
5314
5315        int scrollx, scrolly;
5316
5317        if (a == Layout.Alignment.ALIGN_CENTER) {
5318            /*
5319             * Keep centered if possible, or, if it is too wide to fit,
5320             * keep leading edge in view.
5321             */
5322
5323            int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
5324            int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5325
5326            if (right - left < hspace) {
5327                scrollx = (right + left) / 2 - hspace / 2;
5328            } else {
5329                if (dir < 0) {
5330                    scrollx = right - hspace;
5331                } else {
5332                    scrollx = left;
5333                }
5334            }
5335        } else if (a == Layout.Alignment.ALIGN_NORMAL) {
5336            /*
5337             * Keep leading edge in view.
5338             */
5339
5340            if (dir < 0) {
5341                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5342                scrollx = right - hspace;
5343            } else {
5344                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
5345            }
5346        } else /* a == Layout.Alignment.ALIGN_OPPOSITE */ {
5347            /*
5348             * Keep trailing edge in view.
5349             */
5350
5351            if (dir < 0) {
5352                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
5353            } else {
5354                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5355                scrollx = right - hspace;
5356            }
5357        }
5358
5359        if (ht < vspace) {
5360            scrolly = 0;
5361        } else {
5362            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5363                scrolly = ht - vspace;
5364            } else {
5365                scrolly = 0;
5366            }
5367        }
5368
5369        if (scrollx != mScrollX || scrolly != mScrollY) {
5370            scrollTo(scrollx, scrolly);
5371            return true;
5372        } else {
5373            return false;
5374        }
5375    }
5376
5377    /**
5378     * Move the point, specified by the offset, into the view if it is needed.
5379     * This has to be called after layout. Returns true if anything changed.
5380     */
5381    public boolean bringPointIntoView(int offset) {
5382        boolean changed = false;
5383
5384        int line = mLayout.getLineForOffset(offset);
5385
5386        // FIXME: Is it okay to truncate this, or should we round?
5387        final int x = (int)mLayout.getPrimaryHorizontal(offset);
5388        final int top = mLayout.getLineTop(line);
5389        final int bottom = mLayout.getLineTop(line+1);
5390
5391        int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
5392        int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5393        int ht = mLayout.getHeight();
5394
5395        int grav;
5396
5397        switch (mLayout.getParagraphAlignment(line)) {
5398            case ALIGN_NORMAL:
5399                grav = 1;
5400                break;
5401
5402            case ALIGN_OPPOSITE:
5403                grav = -1;
5404                break;
5405
5406            default:
5407                grav = 0;
5408        }
5409
5410        grav *= mLayout.getParagraphDirection(line);
5411
5412        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5413        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
5414
5415        int hslack = (bottom - top) / 2;
5416        int vslack = hslack;
5417
5418        if (vslack > vspace / 4)
5419            vslack = vspace / 4;
5420        if (hslack > hspace / 4)
5421            hslack = hspace / 4;
5422
5423        int hs = mScrollX;
5424        int vs = mScrollY;
5425
5426        if (top - vs < vslack)
5427            vs = top - vslack;
5428        if (bottom - vs > vspace - vslack)
5429            vs = bottom - (vspace - vslack);
5430        if (ht - vs < vspace)
5431            vs = ht - vspace;
5432        if (0 - vs > 0)
5433            vs = 0;
5434
5435        if (grav != 0) {
5436            if (x - hs < hslack) {
5437                hs = x - hslack;
5438            }
5439            if (x - hs > hspace - hslack) {
5440                hs = x - (hspace - hslack);
5441            }
5442        }
5443
5444        if (grav < 0) {
5445            if (left - hs > 0)
5446                hs = left;
5447            if (right - hs < hspace)
5448                hs = right - hspace;
5449        } else if (grav > 0) {
5450            if (right - hs < hspace)
5451                hs = right - hspace;
5452            if (left - hs > 0)
5453                hs = left;
5454        } else /* grav == 0 */ {
5455            if (right - left <= hspace) {
5456                /*
5457                 * If the entire text fits, center it exactly.
5458                 */
5459                hs = left - (hspace - (right - left)) / 2;
5460            } else if (x > right - hslack) {
5461                /*
5462                 * If we are near the right edge, keep the right edge
5463                 * at the edge of the view.
5464                 */
5465                hs = right - hspace;
5466            } else if (x < left + hslack) {
5467                /*
5468                 * If we are near the left edge, keep the left edge
5469                 * at the edge of the view.
5470                 */
5471                hs = left;
5472            } else if (left > hs) {
5473                /*
5474                 * Is there whitespace visible at the left?  Fix it if so.
5475                 */
5476                hs = left;
5477            } else if (right < hs + hspace) {
5478                /*
5479                 * Is there whitespace visible at the right?  Fix it if so.
5480                 */
5481                hs = right - hspace;
5482            } else {
5483                /*
5484                 * Otherwise, float as needed.
5485                 */
5486                if (x - hs < hslack) {
5487                    hs = x - hslack;
5488                }
5489                if (x - hs > hspace - hslack) {
5490                    hs = x - (hspace - hslack);
5491                }
5492            }
5493        }
5494
5495        if (hs != mScrollX || vs != mScrollY) {
5496            if (mScroller == null) {
5497                scrollTo(hs, vs);
5498            } else {
5499                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
5500                int dx = hs - mScrollX;
5501                int dy = vs - mScrollY;
5502
5503                if (duration > ANIMATED_SCROLL_GAP) {
5504                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
5505                    invalidate();
5506                } else {
5507                    if (!mScroller.isFinished()) {
5508                        mScroller.abortAnimation();
5509                    }
5510
5511                    scrollBy(dx, dy);
5512                }
5513
5514                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
5515            }
5516
5517            changed = true;
5518        }
5519
5520        if (isFocused()) {
5521            // This offsets because getInterestingRect() is in terms of
5522            // viewport coordinates, but requestRectangleOnScreen()
5523            // is in terms of content coordinates.
5524
5525            Rect r = new Rect();
5526            getInterestingRect(r, x, top, bottom, line);
5527            r.offset(mScrollX, mScrollY);
5528
5529            if (requestRectangleOnScreen(r)) {
5530                changed = true;
5531            }
5532        }
5533
5534        return changed;
5535    }
5536
5537    /**
5538     * Move the cursor, if needed, so that it is at an offset that is visible
5539     * to the user.  This will not move the cursor if it represents more than
5540     * one character (a selection range).  This will only work if the
5541     * TextView contains spannable text; otherwise it will do nothing.
5542     */
5543    public boolean moveCursorToVisibleOffset() {
5544        if (!(mText instanceof Spannable)) {
5545            return false;
5546        }
5547        int start = Selection.getSelectionStart(mText);
5548        int end = Selection.getSelectionEnd(mText);
5549        if (start != end) {
5550            return false;
5551        }
5552
5553        // First: make sure the line is visible on screen:
5554
5555        int line = mLayout.getLineForOffset(start);
5556
5557        final int top = mLayout.getLineTop(line);
5558        final int bottom = mLayout.getLineTop(line+1);
5559        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
5560        int vslack = (bottom - top) / 2;
5561        if (vslack > vspace / 4)
5562            vslack = vspace / 4;
5563        final int vs = mScrollY;
5564
5565        if (top < (vs+vslack)) {
5566            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
5567        } else if (bottom > (vspace+vs-vslack)) {
5568            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
5569        }
5570
5571        // Next: make sure the character is visible on screen:
5572
5573        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5574        final int hs = mScrollX;
5575        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
5576        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
5577
5578        int newStart = start;
5579        if (newStart < leftChar) {
5580            newStart = leftChar;
5581        } else if (newStart > rightChar) {
5582            newStart = rightChar;
5583        }
5584
5585        if (newStart != start) {
5586            Selection.setSelection((Spannable)mText, newStart);
5587            return true;
5588        }
5589
5590        return false;
5591    }
5592
5593    @Override
5594    public void computeScroll() {
5595        if (mScroller != null) {
5596            if (mScroller.computeScrollOffset()) {
5597                mScrollX = mScroller.getCurrX();
5598                mScrollY = mScroller.getCurrY();
5599                postInvalidate();  // So we draw again
5600            }
5601        }
5602    }
5603
5604    private void getInterestingRect(Rect r, int h, int top, int bottom,
5605                                    int line) {
5606        int paddingTop = getExtendedPaddingTop();
5607        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5608            paddingTop += getVerticalOffset(false);
5609        }
5610        top += paddingTop;
5611        bottom += paddingTop;
5612        h += getCompoundPaddingLeft();
5613
5614        if (line == 0)
5615            top -= getExtendedPaddingTop();
5616        if (line == mLayout.getLineCount() - 1)
5617            bottom += getExtendedPaddingBottom();
5618
5619        r.set(h, top, h+1, bottom);
5620        r.offset(-mScrollX, -mScrollY);
5621    }
5622
5623    @Override
5624    public void debug(int depth) {
5625        super.debug(depth);
5626
5627        String output = debugIndent(depth);
5628        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
5629                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
5630                + "} ";
5631
5632        if (mText != null) {
5633
5634            output += "mText=\"" + mText + "\" ";
5635            if (mLayout != null) {
5636                output += "mLayout width=" + mLayout.getWidth()
5637                        + " height=" + mLayout.getHeight();
5638            }
5639        } else {
5640            output += "mText=NULL";
5641        }
5642        Log.d(VIEW_LOG_TAG, output);
5643    }
5644
5645    /**
5646     * Convenience for {@link Selection#getSelectionStart}.
5647     */
5648    public int getSelectionStart() {
5649        return Selection.getSelectionStart(getText());
5650    }
5651
5652    /**
5653     * Convenience for {@link Selection#getSelectionEnd}.
5654     */
5655    public int getSelectionEnd() {
5656        return Selection.getSelectionEnd(getText());
5657    }
5658
5659    /**
5660     * Return true iff there is a selection inside this text view.
5661     */
5662    public boolean hasSelection() {
5663        return getSelectionStart() != getSelectionEnd();
5664    }
5665
5666    /**
5667     * Sets the properties of this field (lines, horizontally scrolling,
5668     * transformation method) to be for a single-line input.
5669     *
5670     * @attr ref android.R.styleable#TextView_singleLine
5671     */
5672    public void setSingleLine() {
5673        setSingleLine(true);
5674    }
5675
5676    /**
5677     * If true, sets the properties of this field (lines, horizontally
5678     * scrolling, transformation method) to be for a single-line input;
5679     * if false, restores these to the default conditions.
5680     * Note that calling this with false restores default conditions,
5681     * not necessarily those that were in effect prior to calling
5682     * it with true.
5683     *
5684     * @attr ref android.R.styleable#TextView_singleLine
5685     */
5686    @android.view.RemotableViewMethod
5687    public void setSingleLine(boolean singleLine) {
5688        if ((mInputType&EditorInfo.TYPE_MASK_CLASS)
5689                == EditorInfo.TYPE_CLASS_TEXT) {
5690            if (singleLine) {
5691                mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
5692            } else {
5693                mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
5694            }
5695        }
5696        applySingleLine(singleLine, true);
5697    }
5698
5699    private void applySingleLine(boolean singleLine, boolean applyTransformation) {
5700        mSingleLine = singleLine;
5701        if (singleLine) {
5702            setLines(1);
5703            setHorizontallyScrolling(true);
5704            if (applyTransformation) {
5705                setTransformationMethod(SingleLineTransformationMethod.
5706                                        getInstance());
5707            }
5708        } else {
5709            setMaxLines(Integer.MAX_VALUE);
5710            setHorizontallyScrolling(false);
5711            if (applyTransformation) {
5712                setTransformationMethod(null);
5713            }
5714        }
5715    }
5716
5717    /**
5718     * Causes words in the text that are longer than the view is wide
5719     * to be ellipsized instead of broken in the middle.  You may also
5720     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
5721     * to constrain the text toa single line.  Use <code>null</code>
5722     * to turn off ellipsizing.
5723     *
5724     * @attr ref android.R.styleable#TextView_ellipsize
5725     */
5726    public void setEllipsize(TextUtils.TruncateAt where) {
5727        mEllipsize = where;
5728
5729        if (mLayout != null) {
5730            nullLayouts();
5731            requestLayout();
5732            invalidate();
5733        }
5734    }
5735
5736    /**
5737     * Sets how many times to repeat the marquee animation. Only applied if the
5738     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
5739     *
5740     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
5741     */
5742    public void setMarqueeRepeatLimit(int marqueeLimit) {
5743        mMarqueeRepeatLimit = marqueeLimit;
5744    }
5745
5746    /**
5747     * Returns where, if anywhere, words that are longer than the view
5748     * is wide should be ellipsized.
5749     */
5750    @ViewDebug.ExportedProperty
5751    public TextUtils.TruncateAt getEllipsize() {
5752        return mEllipsize;
5753    }
5754
5755    /**
5756     * Set the TextView so that when it takes focus, all the text is
5757     * selected.
5758     *
5759     * @attr ref android.R.styleable#TextView_selectAllOnFocus
5760     */
5761    @android.view.RemotableViewMethod
5762    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
5763        mSelectAllOnFocus = selectAllOnFocus;
5764
5765        if (selectAllOnFocus && !(mText instanceof Spannable)) {
5766            setText(mText, BufferType.SPANNABLE);
5767        }
5768    }
5769
5770    /**
5771     * Set whether the cursor is visible.  The default is true.
5772     *
5773     * @attr ref android.R.styleable#TextView_cursorVisible
5774     */
5775    @android.view.RemotableViewMethod
5776    public void setCursorVisible(boolean visible) {
5777        mCursorVisible = visible;
5778        invalidate();
5779
5780        if (visible) {
5781            makeBlink();
5782        } else if (mBlink != null) {
5783            mBlink.removeCallbacks(mBlink);
5784        }
5785    }
5786
5787    private boolean canMarquee() {
5788        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
5789        return width > 0 && mLayout.getLineWidth(0) > width;
5790    }
5791
5792    private void startMarquee() {
5793        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
5794            return;
5795        }
5796
5797        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
5798                getLineCount() == 1 && canMarquee()) {
5799
5800            if (mMarquee == null) mMarquee = new Marquee(this);
5801            mMarquee.start(mMarqueeRepeatLimit);
5802        }
5803    }
5804
5805    private void stopMarquee() {
5806        if (mMarquee != null && !mMarquee.isStopped()) {
5807            mMarquee.stop();
5808        }
5809    }
5810
5811    private void startStopMarquee(boolean start) {
5812        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5813            if (start) {
5814                startMarquee();
5815            } else {
5816                stopMarquee();
5817            }
5818        }
5819    }
5820
5821    private static final class Marquee extends Handler {
5822        // TODO: Add an option to configure this
5823        private static final float MARQUEE_DELTA_MAX = 0.07f;
5824        private static final int MARQUEE_DELAY = 1200;
5825        private static final int MARQUEE_RESTART_DELAY = 1200;
5826        private static final int MARQUEE_RESOLUTION = 1000 / 30;
5827        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
5828
5829        private static final byte MARQUEE_STOPPED = 0x0;
5830        private static final byte MARQUEE_STARTING = 0x1;
5831        private static final byte MARQUEE_RUNNING = 0x2;
5832
5833        private static final int MESSAGE_START = 0x1;
5834        private static final int MESSAGE_TICK = 0x2;
5835        private static final int MESSAGE_RESTART = 0x3;
5836
5837        private final WeakReference<TextView> mView;
5838
5839        private byte mStatus = MARQUEE_STOPPED;
5840        private float mScrollUnit;
5841        private float mMaxScroll;
5842        float mMaxFadeScroll;
5843        private float mGhostStart;
5844        private float mGhostOffset;
5845        private float mFadeStop;
5846        private int mRepeatLimit;
5847
5848        float mScroll;
5849
5850        Marquee(TextView v) {
5851            final float density = v.getContext().getResources().getDisplayMetrics().density;
5852            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / (float) MARQUEE_RESOLUTION;
5853            mView = new WeakReference<TextView>(v);
5854        }
5855
5856        @Override
5857        public void handleMessage(Message msg) {
5858            switch (msg.what) {
5859                case MESSAGE_START:
5860                    mStatus = MARQUEE_RUNNING;
5861                    tick();
5862                    break;
5863                case MESSAGE_TICK:
5864                    tick();
5865                    break;
5866                case MESSAGE_RESTART:
5867                    if (mStatus == MARQUEE_RUNNING) {
5868                        if (mRepeatLimit >= 0) {
5869                            mRepeatLimit--;
5870                        }
5871                        start(mRepeatLimit);
5872                    }
5873                    break;
5874            }
5875        }
5876
5877        void tick() {
5878            if (mStatus != MARQUEE_RUNNING) {
5879                return;
5880            }
5881
5882            removeMessages(MESSAGE_TICK);
5883
5884            final TextView textView = mView.get();
5885            if (textView != null && (textView.isFocused() || textView.isSelected())) {
5886                mScroll += mScrollUnit;
5887                if (mScroll > mMaxScroll) {
5888                    mScroll = mMaxScroll;
5889                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
5890                } else {
5891                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
5892                }
5893                textView.invalidate();
5894            }
5895        }
5896
5897        void stop() {
5898            mStatus = MARQUEE_STOPPED;
5899            removeMessages(MESSAGE_START);
5900            removeMessages(MESSAGE_RESTART);
5901            removeMessages(MESSAGE_TICK);
5902            resetScroll();
5903        }
5904
5905        private void resetScroll() {
5906            mScroll = 0.0f;
5907            final TextView textView = mView.get();
5908            if (textView != null) textView.invalidate();
5909        }
5910
5911        void start(int repeatLimit) {
5912            if (repeatLimit == 0) {
5913                stop();
5914                return;
5915            }
5916            mRepeatLimit = repeatLimit;
5917            final TextView textView = mView.get();
5918            if (textView != null && textView.mLayout != null) {
5919                mStatus = MARQUEE_STARTING;
5920                mScroll = 0.0f;
5921                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
5922                        textView.getCompoundPaddingRight();
5923                final float lineWidth = textView.mLayout.getLineWidth(0);
5924                final float gap = textWidth / 3.0f;
5925                mGhostStart = lineWidth - textWidth + gap;
5926                mMaxScroll = mGhostStart + textWidth;
5927                mGhostOffset = lineWidth + gap;
5928                mFadeStop = lineWidth + textWidth / 6.0f;
5929                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
5930
5931                textView.invalidate();
5932                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
5933            }
5934        }
5935
5936        float getGhostOffset() {
5937            return mGhostOffset;
5938        }
5939
5940        boolean shouldDrawLeftFade() {
5941            return mScroll <= mFadeStop;
5942        }
5943
5944        boolean shouldDrawGhost() {
5945            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
5946        }
5947
5948        boolean isRunning() {
5949            return mStatus == MARQUEE_RUNNING;
5950        }
5951
5952        boolean isStopped() {
5953            return mStatus == MARQUEE_STOPPED;
5954        }
5955    }
5956
5957    /**
5958     * This method is called when the text is changed, in case any
5959     * subclasses would like to know.
5960     *
5961     * @param text The text the TextView is displaying.
5962     * @param start The offset of the start of the range of the text
5963     *              that was modified.
5964     * @param before The offset of the former end of the range of the
5965     *               text that was modified.  If text was simply inserted,
5966     *               this will be the same as <code>start</code>.
5967     *               If text was replaced with new text or deleted, the
5968     *               length of the old text was <code>before-start</code>.
5969     * @param after The offset of the end of the range of the text
5970     *              that was modified.  If text was simply deleted,
5971     *              this will be the same as <code>start</code>.
5972     *              If text was replaced with new text or inserted,
5973     *              the length of the new text is <code>after-start</code>.
5974     */
5975    protected void onTextChanged(CharSequence text,
5976                                 int start, int before, int after) {
5977    }
5978
5979    /**
5980     * This method is called when the selection has changed, in case any
5981     * subclasses would like to know.
5982     *
5983     * @param selStart The new selection start location.
5984     * @param selEnd The new selection end location.
5985     */
5986    protected void onSelectionChanged(int selStart, int selEnd) {
5987    }
5988
5989    /**
5990     * Adds a TextWatcher to the list of those whose methods are called
5991     * whenever this TextView's text changes.
5992     * <p>
5993     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
5994     * not called after {@link #setText} calls.  Now, doing {@link #setText}
5995     * if there are any text changed listeners forces the buffer type to
5996     * Editable if it would not otherwise be and does call this method.
5997     */
5998    public void addTextChangedListener(TextWatcher watcher) {
5999        if (mListeners == null) {
6000            mListeners = new ArrayList<TextWatcher>();
6001        }
6002
6003        mListeners.add(watcher);
6004    }
6005
6006    /**
6007     * Removes the specified TextWatcher from the list of those whose
6008     * methods are called
6009     * whenever this TextView's text changes.
6010     */
6011    public void removeTextChangedListener(TextWatcher watcher) {
6012        if (mListeners != null) {
6013            int i = mListeners.indexOf(watcher);
6014
6015            if (i >= 0) {
6016                mListeners.remove(i);
6017            }
6018        }
6019    }
6020
6021    private void sendBeforeTextChanged(CharSequence text, int start, int before,
6022                                   int after) {
6023        if (mListeners != null) {
6024            final ArrayList<TextWatcher> list = mListeners;
6025            final int count = list.size();
6026            for (int i = 0; i < count; i++) {
6027                list.get(i).beforeTextChanged(text, start, before, after);
6028            }
6029        }
6030    }
6031
6032    /**
6033     * Not private so it can be called from an inner class without going
6034     * through a thunk.
6035     */
6036    void sendOnTextChanged(CharSequence text, int start, int before,
6037                                   int after) {
6038        if (mListeners != null) {
6039            final ArrayList<TextWatcher> list = mListeners;
6040            final int count = list.size();
6041            for (int i = 0; i < count; i++) {
6042                list.get(i).onTextChanged(text, start, before, after);
6043            }
6044        }
6045    }
6046
6047    /**
6048     * Not private so it can be called from an inner class without going
6049     * through a thunk.
6050     */
6051    void sendAfterTextChanged(Editable text) {
6052        if (mListeners != null) {
6053            final ArrayList<TextWatcher> list = mListeners;
6054            final int count = list.size();
6055            for (int i = 0; i < count; i++) {
6056                list.get(i).afterTextChanged(text);
6057            }
6058        }
6059    }
6060
6061    /**
6062     * Not private so it can be called from an inner class without going
6063     * through a thunk.
6064     */
6065    void handleTextChanged(CharSequence buffer, int start,
6066            int before, int after) {
6067        final InputMethodState ims = mInputMethodState;
6068        if (ims == null || ims.mBatchEditNesting == 0) {
6069            updateAfterEdit();
6070        }
6071        if (ims != null) {
6072            ims.mContentChanged = true;
6073            if (ims.mChangedStart < 0) {
6074                ims.mChangedStart = start;
6075                ims.mChangedEnd = start+before;
6076            } else {
6077                if (ims.mChangedStart > start) ims.mChangedStart = start;
6078                if (ims.mChangedEnd < (start+before)) ims.mChangedEnd = start+before;
6079            }
6080            ims.mChangedDelta += after-before;
6081        }
6082
6083        sendOnTextChanged(buffer, start, before, after);
6084        onTextChanged(buffer, start, before, after);
6085    }
6086
6087    /**
6088     * Not private so it can be called from an inner class without going
6089     * through a thunk.
6090     */
6091    void spanChange(Spanned buf, Object what, int oldStart, int newStart,
6092            int oldEnd, int newEnd) {
6093        // XXX Make the start and end move together if this ends up
6094        // spending too much time invalidating.
6095
6096        boolean selChanged = false;
6097        int newSelStart=-1, newSelEnd=-1;
6098
6099        final InputMethodState ims = mInputMethodState;
6100
6101        if (what == Selection.SELECTION_END) {
6102            mHighlightPathBogus = true;
6103            selChanged = true;
6104            newSelEnd = newStart;
6105
6106            if (!isFocused()) {
6107                mSelectionMoved = true;
6108            }
6109
6110            if (oldStart >= 0 || newStart >= 0) {
6111                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
6112                registerForPreDraw();
6113
6114                if (isFocused()) {
6115                    mShowCursor = SystemClock.uptimeMillis();
6116                    makeBlink();
6117                }
6118            }
6119        }
6120
6121        if (what == Selection.SELECTION_START) {
6122            mHighlightPathBogus = true;
6123            selChanged = true;
6124            newSelStart = newStart;
6125
6126            if (!isFocused()) {
6127                mSelectionMoved = true;
6128            }
6129
6130            if (oldStart >= 0 || newStart >= 0) {
6131                int end = Selection.getSelectionEnd(buf);
6132                invalidateCursor(end, oldStart, newStart);
6133            }
6134        }
6135
6136        if (selChanged) {
6137            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
6138                if (newSelStart < 0) {
6139                    newSelStart = Selection.getSelectionStart(buf);
6140                }
6141                if (newSelEnd < 0) {
6142                    newSelEnd = Selection.getSelectionEnd(buf);
6143                }
6144                onSelectionChanged(newSelStart, newSelEnd);
6145            }
6146        }
6147
6148        if (what instanceof UpdateAppearance ||
6149            what instanceof ParagraphStyle) {
6150            if (ims == null || ims.mBatchEditNesting == 0) {
6151                invalidate();
6152                mHighlightPathBogus = true;
6153                checkForResize();
6154            } else {
6155                ims.mContentChanged = true;
6156            }
6157        }
6158
6159        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
6160            mHighlightPathBogus = true;
6161            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
6162                ims.mSelectionModeChanged = true;
6163            }
6164
6165            if (Selection.getSelectionStart(buf) >= 0) {
6166                if (ims == null || ims.mBatchEditNesting == 0) {
6167                    invalidateCursor();
6168                } else {
6169                    ims.mCursorChanged = true;
6170                }
6171            }
6172        }
6173
6174        if (what instanceof ParcelableSpan) {
6175            // If this is a span that can be sent to a remote process,
6176            // the current extract editor would be interested in it.
6177            if (ims != null && ims.mExtracting != null) {
6178                if (ims.mBatchEditNesting != 0) {
6179                    if (oldStart >= 0) {
6180                        if (ims.mChangedStart > oldStart) {
6181                            ims.mChangedStart = oldStart;
6182                        }
6183                        if (ims.mChangedStart > oldEnd) {
6184                            ims.mChangedStart = oldEnd;
6185                        }
6186                    }
6187                    if (newStart >= 0) {
6188                        if (ims.mChangedStart > newStart) {
6189                            ims.mChangedStart = newStart;
6190                        }
6191                        if (ims.mChangedStart > newEnd) {
6192                            ims.mChangedStart = newEnd;
6193                        }
6194                    }
6195                } else {
6196                    if (DEBUG_EXTRACT) Log.v(TAG, "Span change outside of batch: "
6197                            + oldStart + "-" + oldEnd + ","
6198                            + newStart + "-" + newEnd + what);
6199                    ims.mContentChanged = true;
6200                }
6201            }
6202        }
6203    }
6204
6205    private class ChangeWatcher
6206    implements TextWatcher, SpanWatcher {
6207
6208        private CharSequence mBeforeText;
6209
6210        public void beforeTextChanged(CharSequence buffer, int start,
6211                                      int before, int after) {
6212            if (DEBUG_EXTRACT) Log.v(TAG, "beforeTextChanged start=" + start
6213                    + " before=" + before + " after=" + after + ": " + buffer);
6214
6215            if (AccessibilityManager.getInstance(mContext).isEnabled()) {
6216                mBeforeText = buffer.toString();
6217            }
6218
6219            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
6220        }
6221
6222        public void onTextChanged(CharSequence buffer, int start,
6223                                  int before, int after) {
6224            if (DEBUG_EXTRACT) Log.v(TAG, "onTextChanged start=" + start
6225                    + " before=" + before + " after=" + after + ": " + buffer);
6226            TextView.this.handleTextChanged(buffer, start, before, after);
6227
6228            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
6229                    (isFocused() || isSelected() &&
6230                    isShown())) {
6231                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
6232                mBeforeText = null;
6233            }
6234        }
6235
6236        public void afterTextChanged(Editable buffer) {
6237            if (DEBUG_EXTRACT) Log.v(TAG, "afterTextChanged: " + buffer);
6238            TextView.this.sendAfterTextChanged(buffer);
6239
6240            if (MetaKeyKeyListener.getMetaState(buffer,
6241                                 MetaKeyKeyListener.META_SELECTING) != 0) {
6242                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
6243            }
6244        }
6245
6246        public void onSpanChanged(Spannable buf,
6247                                  Object what, int s, int e, int st, int en) {
6248            if (DEBUG_EXTRACT) Log.v(TAG, "onSpanChanged s=" + s + " e=" + e
6249                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
6250            TextView.this.spanChange(buf, what, s, st, e, en);
6251        }
6252
6253        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
6254            if (DEBUG_EXTRACT) Log.v(TAG, "onSpanAdded s=" + s + " e=" + e
6255                    + " what=" + what + ": " + buf);
6256            TextView.this.spanChange(buf, what, -1, s, -1, e);
6257        }
6258
6259        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
6260            if (DEBUG_EXTRACT) Log.v(TAG, "onSpanRemoved s=" + s + " e=" + e
6261                    + " what=" + what + ": " + buf);
6262            TextView.this.spanChange(buf, what, s, -1, e, -1);
6263        }
6264    }
6265
6266    private void makeBlink() {
6267        if (!mCursorVisible) {
6268            if (mBlink != null) {
6269                mBlink.removeCallbacks(mBlink);
6270            }
6271
6272            return;
6273        }
6274
6275        if (mBlink == null)
6276            mBlink = new Blink(this);
6277
6278        mBlink.removeCallbacks(mBlink);
6279        mBlink.postAtTime(mBlink, mShowCursor + BLINK);
6280    }
6281
6282    @Override
6283    public void onStartTemporaryDetach() {
6284        mTemporaryDetach = true;
6285    }
6286
6287    @Override
6288    public void onFinishTemporaryDetach() {
6289        mTemporaryDetach = false;
6290    }
6291
6292    @Override
6293    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
6294        if (mTemporaryDetach) {
6295            // If we are temporarily in the detach state, then do nothing.
6296            super.onFocusChanged(focused, direction, previouslyFocusedRect);
6297            return;
6298        }
6299
6300        mShowCursor = SystemClock.uptimeMillis();
6301
6302        ensureEndedBatchEdit();
6303
6304        if (focused) {
6305            int selStart = getSelectionStart();
6306            int selEnd = getSelectionEnd();
6307
6308            if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) {
6309                boolean selMoved = mSelectionMoved;
6310
6311                if (mMovement != null) {
6312                    mMovement.onTakeFocus(this, (Spannable) mText, direction);
6313                }
6314
6315                if (mSelectAllOnFocus) {
6316                    Selection.setSelection((Spannable) mText, 0, mText.length());
6317                }
6318
6319                if (selMoved && selStart >= 0 && selEnd >= 0) {
6320                    /*
6321                     * Someone intentionally set the selection, so let them
6322                     * do whatever it is that they wanted to do instead of
6323                     * the default on-focus behavior.  We reset the selection
6324                     * here instead of just skipping the onTakeFocus() call
6325                     * because some movement methods do something other than
6326                     * just setting the selection in theirs and we still
6327                     * need to go through that path.
6328                     */
6329
6330                    Selection.setSelection((Spannable) mText, selStart, selEnd);
6331                }
6332                mTouchFocusSelected = true;
6333            }
6334
6335            mFrozenWithFocus = false;
6336            mSelectionMoved = false;
6337
6338            if (mText instanceof Spannable) {
6339                Spannable sp = (Spannable) mText;
6340                MetaKeyKeyListener.resetMetaState(sp);
6341            }
6342
6343            makeBlink();
6344
6345            if (mError != null) {
6346                showError();
6347            }
6348        } else {
6349            if (mError != null) {
6350                hideError();
6351            }
6352            // Don't leave us in the middle of a batch edit.
6353            onEndBatchEdit();
6354        }
6355
6356        startStopMarquee(focused);
6357
6358        if (mTransformation != null) {
6359            mTransformation.onFocusChanged(this, mText, focused, direction,
6360                                           previouslyFocusedRect);
6361        }
6362
6363        super.onFocusChanged(focused, direction, previouslyFocusedRect);
6364    }
6365
6366    @Override
6367    public void onWindowFocusChanged(boolean hasWindowFocus) {
6368        super.onWindowFocusChanged(hasWindowFocus);
6369
6370        if (hasWindowFocus) {
6371            if (mBlink != null) {
6372                mBlink.uncancel();
6373
6374                if (isFocused()) {
6375                    mShowCursor = SystemClock.uptimeMillis();
6376                    makeBlink();
6377                }
6378            }
6379        } else {
6380            if (mBlink != null) {
6381                mBlink.cancel();
6382            }
6383            // Don't leave us in the middle of a batch edit.
6384            onEndBatchEdit();
6385            if (mInputContentType != null) {
6386                mInputContentType.enterDown = false;
6387            }
6388        }
6389
6390        startStopMarquee(hasWindowFocus);
6391    }
6392
6393    /**
6394     * Use {@link BaseInputConnection#removeComposingSpans
6395     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
6396     * state from this text view.
6397     */
6398    public void clearComposingText() {
6399        if (mText instanceof Spannable) {
6400            BaseInputConnection.removeComposingSpans((Spannable)mText);
6401        }
6402    }
6403
6404    @Override
6405    public void setSelected(boolean selected) {
6406        boolean wasSelected = isSelected();
6407
6408        super.setSelected(selected);
6409
6410        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6411            if (selected) {
6412                startMarquee();
6413            } else {
6414                stopMarquee();
6415            }
6416        }
6417    }
6418
6419    class CommitSelectionReceiver extends ResultReceiver {
6420        int mNewStart;
6421        int mNewEnd;
6422
6423        CommitSelectionReceiver() {
6424            super(getHandler());
6425        }
6426
6427        protected void onReceiveResult(int resultCode, Bundle resultData) {
6428            if (resultCode != InputMethodManager.RESULT_SHOWN) {
6429                Selection.setSelection((Spannable)mText, mNewStart, mNewEnd);
6430            }
6431        }
6432    }
6433
6434    @Override
6435    public boolean onTouchEvent(MotionEvent event) {
6436        final int action = event.getAction();
6437        if (action == MotionEvent.ACTION_DOWN) {
6438            // Reset this state; it will be re-set if super.onTouchEvent
6439            // causes focus to move to the view.
6440            mTouchFocusSelected = false;
6441        }
6442
6443        final boolean superResult = super.onTouchEvent(event);
6444
6445        /*
6446         * Don't handle the release after a long press, because it will
6447         * move the selection away from whatever the menu action was
6448         * trying to affect.
6449         */
6450        if (mEatTouchRelease && action == MotionEvent.ACTION_UP) {
6451            mEatTouchRelease = false;
6452            return superResult;
6453        }
6454
6455        if ((mMovement != null || onCheckIsTextEditor()) && mText instanceof Spannable && mLayout != null) {
6456
6457            if (action == MotionEvent.ACTION_DOWN) {
6458                mScrolled = false;
6459            }
6460
6461            boolean handled = false;
6462
6463            int oldSelStart = Selection.getSelectionStart(mText);
6464            int oldSelEnd = Selection.getSelectionEnd(mText);
6465
6466            if (mMovement != null) {
6467                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
6468            }
6469
6470            if (mText instanceof Editable && onCheckIsTextEditor()) {
6471                if (action == MotionEvent.ACTION_UP && isFocused() && !mScrolled) {
6472                    InputMethodManager imm = (InputMethodManager)
6473                            getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
6474
6475                    // This is going to be gross...  if tapping on the text view
6476                    // causes the IME to be displayed, we don't want the selection
6477                    // to change.  But the selection has already changed, and
6478                    // we won't know right away whether the IME is getting
6479                    // displayed, so...
6480
6481                    int newSelStart = Selection.getSelectionStart(mText);
6482                    int newSelEnd = Selection.getSelectionEnd(mText);
6483                    CommitSelectionReceiver csr = null;
6484                    if (newSelStart != oldSelStart || newSelEnd != oldSelEnd) {
6485                        csr = new CommitSelectionReceiver();
6486                        csr.mNewStart = newSelStart;
6487                        csr.mNewEnd = newSelEnd;
6488                    }
6489
6490                    if (imm.showSoftInput(this, 0, csr) && csr != null) {
6491                        // The IME might get shown -- revert to the old
6492                        // selection, and change to the new when we finally
6493                        // find out of it is okay.
6494                        Selection.setSelection((Spannable)mText, oldSelStart, oldSelEnd);
6495                        handled = true;
6496                    }
6497                }
6498            }
6499
6500            if (handled) {
6501                return true;
6502            }
6503        }
6504
6505        return superResult;
6506    }
6507
6508    /**
6509     * Returns true, only while processing a touch gesture, if the initial
6510     * touch down event caused focus to move to the text view and as a result
6511     * its selection changed.  Only valid while processing the touch gesture
6512     * of interest.
6513     */
6514    public boolean didTouchFocusSelect() {
6515        return mTouchFocusSelected;
6516    }
6517
6518    @Override
6519    public void cancelLongPress() {
6520        super.cancelLongPress();
6521        mScrolled = true;
6522    }
6523
6524    @Override
6525    public boolean onTrackballEvent(MotionEvent event) {
6526        if (mMovement != null && mText instanceof Spannable &&
6527            mLayout != null) {
6528            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
6529                return true;
6530            }
6531        }
6532
6533        return super.onTrackballEvent(event);
6534    }
6535
6536    public void setScroller(Scroller s) {
6537        mScroller = s;
6538    }
6539
6540    private static class Blink extends Handler implements Runnable {
6541        private WeakReference<TextView> mView;
6542        private boolean mCancelled;
6543
6544        public Blink(TextView v) {
6545            mView = new WeakReference<TextView>(v);
6546        }
6547
6548        public void run() {
6549            if (mCancelled) {
6550                return;
6551            }
6552
6553            removeCallbacks(Blink.this);
6554
6555            TextView tv = mView.get();
6556
6557            if (tv != null && tv.isFocused()) {
6558                int st = Selection.getSelectionStart(tv.mText);
6559                int en = Selection.getSelectionEnd(tv.mText);
6560
6561                if (st == en && st >= 0 && en >= 0) {
6562                    if (tv.mLayout != null) {
6563                        tv.invalidateCursorPath();
6564                    }
6565
6566                    postAtTime(this, SystemClock.uptimeMillis() + BLINK);
6567                }
6568            }
6569        }
6570
6571        void cancel() {
6572            if (!mCancelled) {
6573                removeCallbacks(Blink.this);
6574                mCancelled = true;
6575            }
6576        }
6577
6578        void uncancel() {
6579            mCancelled = false;
6580        }
6581    }
6582
6583    @Override
6584    protected float getLeftFadingEdgeStrength() {
6585        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6586            if (mMarquee != null && !mMarquee.isStopped()) {
6587                final Marquee marquee = mMarquee;
6588                if (marquee.shouldDrawLeftFade()) {
6589                    return marquee.mScroll / getHorizontalFadingEdgeLength();
6590                } else {
6591                    return 0.0f;
6592                }
6593            } else if (getLineCount() == 1) {
6594                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
6595                    case Gravity.LEFT:
6596                        return 0.0f;
6597                    case Gravity.RIGHT:
6598                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
6599                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
6600                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
6601                    case Gravity.CENTER_HORIZONTAL:
6602                        return 0.0f;
6603                }
6604            }
6605        }
6606        return super.getLeftFadingEdgeStrength();
6607    }
6608
6609    @Override
6610    protected float getRightFadingEdgeStrength() {
6611        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6612            if (mMarquee != null && !mMarquee.isStopped()) {
6613                final Marquee marquee = mMarquee;
6614                return (marquee.mMaxFadeScroll - marquee.mScroll) / getHorizontalFadingEdgeLength();
6615            } else if (getLineCount() == 1) {
6616                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
6617                    case Gravity.LEFT:
6618                        return (mLayout.getLineRight(0) - mScrollX - (mRight - mLeft) -
6619                                getCompoundPaddingLeft() - getCompoundPaddingRight()) /
6620                                getHorizontalFadingEdgeLength();
6621                    case Gravity.RIGHT:
6622                        return 0.0f;
6623                    case Gravity.CENTER_HORIZONTAL:
6624                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
6625                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
6626                                getHorizontalFadingEdgeLength();
6627                }
6628            }
6629        }
6630        return super.getRightFadingEdgeStrength();
6631    }
6632
6633    @Override
6634    protected int computeHorizontalScrollRange() {
6635        if (mLayout != null)
6636            return mLayout.getWidth();
6637
6638        return super.computeHorizontalScrollRange();
6639    }
6640
6641    @Override
6642    protected int computeVerticalScrollRange() {
6643        if (mLayout != null)
6644            return mLayout.getHeight();
6645
6646        return super.computeVerticalScrollRange();
6647    }
6648
6649    @Override
6650    protected int computeVerticalScrollExtent() {
6651        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
6652    }
6653
6654    public enum BufferType {
6655        NORMAL, SPANNABLE, EDITABLE,
6656    }
6657
6658    /**
6659     * Returns the TextView_textColor attribute from the
6660     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
6661     * from the TextView_textAppearance attribute, if TextView_textColor
6662     * was not set directly.
6663     */
6664    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
6665        ColorStateList colors;
6666        colors = attrs.getColorStateList(com.android.internal.R.styleable.
6667                                         TextView_textColor);
6668
6669        if (colors == null) {
6670            int ap = attrs.getResourceId(com.android.internal.R.styleable.
6671                                         TextView_textAppearance, -1);
6672            if (ap != -1) {
6673                TypedArray appearance;
6674                appearance = context.obtainStyledAttributes(ap,
6675                                            com.android.internal.R.styleable.TextAppearance);
6676                colors = appearance.getColorStateList(com.android.internal.R.styleable.
6677                                                  TextAppearance_textColor);
6678                appearance.recycle();
6679            }
6680        }
6681
6682        return colors;
6683    }
6684
6685    /**
6686     * Returns the default color from the TextView_textColor attribute
6687     * from the AttributeSet, if set, or the default color from the
6688     * TextAppearance_textColor from the TextView_textAppearance attribute,
6689     * if TextView_textColor was not set directly.
6690     */
6691    public static int getTextColor(Context context,
6692                                   TypedArray attrs,
6693                                   int def) {
6694        ColorStateList colors = getTextColors(context, attrs);
6695
6696        if (colors == null) {
6697            return def;
6698        } else {
6699            return colors.getDefaultColor();
6700        }
6701    }
6702
6703    @Override
6704    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
6705        switch (keyCode) {
6706        case KeyEvent.KEYCODE_A:
6707            if (canSelectAll()) {
6708                return onTextContextMenuItem(ID_SELECT_ALL);
6709            }
6710
6711            break;
6712
6713        case KeyEvent.KEYCODE_X:
6714            if (canCut()) {
6715                return onTextContextMenuItem(ID_CUT);
6716            }
6717
6718            break;
6719
6720        case KeyEvent.KEYCODE_C:
6721            if (canCopy()) {
6722                return onTextContextMenuItem(ID_COPY);
6723            }
6724
6725            break;
6726
6727        case KeyEvent.KEYCODE_V:
6728            if (canPaste()) {
6729                return onTextContextMenuItem(ID_PASTE);
6730            }
6731
6732            break;
6733        }
6734
6735        return super.onKeyShortcut(keyCode, event);
6736    }
6737
6738    private boolean canSelectAll() {
6739        if (mText instanceof Spannable && mText.length() != 0 &&
6740            mMovement != null && mMovement.canSelectArbitrarily()) {
6741            return true;
6742        }
6743
6744        return false;
6745    }
6746
6747    private boolean canSelectText() {
6748        if (mText instanceof Spannable && mText.length() != 0 &&
6749            mMovement != null && mMovement.canSelectArbitrarily()) {
6750            return true;
6751        }
6752
6753        return false;
6754    }
6755
6756    private boolean canCut() {
6757        if (mTransformation instanceof PasswordTransformationMethod) {
6758            return false;
6759        }
6760
6761        if (mText.length() > 0 && getSelectionStart() >= 0) {
6762            if (mText instanceof Editable && mInput != null) {
6763                return true;
6764            }
6765        }
6766
6767        return false;
6768    }
6769
6770    private boolean canCopy() {
6771        if (mTransformation instanceof PasswordTransformationMethod) {
6772            return false;
6773        }
6774
6775        if (mText.length() > 0 && getSelectionStart() >= 0) {
6776            return true;
6777        }
6778
6779        return false;
6780    }
6781
6782    private boolean canPaste() {
6783        if (mText instanceof Editable && mInput != null &&
6784            getSelectionStart() >= 0 && getSelectionEnd() >= 0) {
6785            ClipboardManager clip = (ClipboardManager)getContext()
6786                    .getSystemService(Context.CLIPBOARD_SERVICE);
6787            if (clip.hasText()) {
6788                return true;
6789            }
6790        }
6791
6792        return false;
6793    }
6794
6795    /**
6796     * Returns a word to add to the dictionary from the context menu,
6797     * or null if there is no cursor or no word at the cursor.
6798     */
6799    private String getWordForDictionary() {
6800        /*
6801         * Quick return if the input type is one where adding words
6802         * to the dictionary doesn't make any sense.
6803         */
6804        int klass = mInputType & InputType.TYPE_MASK_CLASS;
6805        if (klass == InputType.TYPE_CLASS_NUMBER ||
6806            klass == InputType.TYPE_CLASS_PHONE ||
6807            klass == InputType.TYPE_CLASS_DATETIME) {
6808            return null;
6809        }
6810
6811        int variation = mInputType & InputType.TYPE_MASK_VARIATION;
6812        if (variation == InputType.TYPE_TEXT_VARIATION_URI ||
6813            variation == InputType.TYPE_TEXT_VARIATION_PASSWORD ||
6814            variation == InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD ||
6815            variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS ||
6816            variation == InputType.TYPE_TEXT_VARIATION_FILTER) {
6817            return null;
6818        }
6819
6820        int end = getSelectionEnd();
6821
6822        if (end < 0) {
6823            return null;
6824        }
6825
6826        int start = end;
6827        int len = mText.length();
6828
6829        for (; start > 0; start--) {
6830            char c = mTransformed.charAt(start - 1);
6831            int type = Character.getType(c);
6832
6833            if (c != '\'' &&
6834                type != Character.UPPERCASE_LETTER &&
6835                type != Character.LOWERCASE_LETTER &&
6836                type != Character.TITLECASE_LETTER &&
6837                type != Character.MODIFIER_LETTER &&
6838                type != Character.DECIMAL_DIGIT_NUMBER) {
6839                break;
6840            }
6841        }
6842
6843        for (; end < len; end++) {
6844            char c = mTransformed.charAt(end);
6845            int type = Character.getType(c);
6846
6847            if (c != '\'' &&
6848                type != Character.UPPERCASE_LETTER &&
6849                type != Character.LOWERCASE_LETTER &&
6850                type != Character.TITLECASE_LETTER &&
6851                type != Character.MODIFIER_LETTER &&
6852                type != Character.DECIMAL_DIGIT_NUMBER) {
6853                break;
6854            }
6855        }
6856
6857        if (start == end) {
6858            return null;
6859        }
6860
6861        if (end - start > 48) {
6862            return null;
6863        }
6864
6865        return TextUtils.substring(mTransformed, start, end);
6866    }
6867
6868    @Override
6869    public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
6870        boolean isPassword =
6871            (mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION)) ==
6872            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
6873
6874        if (!isPassword) {
6875            CharSequence text = getText();
6876            if (TextUtils.isEmpty(text)) {
6877                text = getHint();
6878            }
6879            if (!TextUtils.isEmpty(text)) {
6880                if (text.length() > AccessibilityEvent.MAX_TEXT_LENGTH) {
6881                    text = text.subSequence(0, AccessibilityEvent.MAX_TEXT_LENGTH + 1);
6882                }
6883                event.getText().add(text);
6884            }
6885        } else {
6886            event.setPassword(isPassword);
6887        }
6888        return false;
6889    }
6890
6891    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
6892            int fromIndex, int removedCount, int addedCount) {
6893        AccessibilityEvent event =
6894            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
6895        event.setFromIndex(fromIndex);
6896        event.setRemovedCount(removedCount);
6897        event.setAddedCount(addedCount);
6898        event.setBeforeText(beforeText);
6899        sendAccessibilityEventUnchecked(event);
6900    }
6901
6902    @Override
6903    protected void onCreateContextMenu(ContextMenu menu) {
6904        super.onCreateContextMenu(menu);
6905        boolean added = false;
6906
6907        if (!isFocused()) {
6908            if (isFocusable() && mInput != null) {
6909                if (canCopy()) {
6910                    MenuHandler handler = new MenuHandler();
6911                    int name = com.android.internal.R.string.copyAll;
6912
6913                    menu.add(0, ID_COPY, 0, name).
6914                        setOnMenuItemClickListener(handler).
6915                        setAlphabeticShortcut('c');
6916                    menu.setHeaderTitle(com.android.internal.R.string.
6917                        editTextMenuTitle);
6918                }
6919            }
6920
6921            return;
6922        }
6923
6924        MenuHandler handler = new MenuHandler();
6925
6926        if (canSelectAll()) {
6927            menu.add(0, ID_SELECT_ALL, 0,
6928                    com.android.internal.R.string.selectAll).
6929                setOnMenuItemClickListener(handler).
6930                setAlphabeticShortcut('a');
6931            added = true;
6932        }
6933
6934        boolean selection = getSelectionStart() != getSelectionEnd();
6935
6936        if (canSelectText()) {
6937            if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) {
6938                menu.add(0, ID_STOP_SELECTING_TEXT, 0,
6939                        com.android.internal.R.string.stopSelectingText).
6940                    setOnMenuItemClickListener(handler);
6941                added = true;
6942            } else {
6943                menu.add(0, ID_START_SELECTING_TEXT, 0,
6944                        com.android.internal.R.string.selectText).
6945                    setOnMenuItemClickListener(handler);
6946                added = true;
6947            }
6948        }
6949
6950        if (canCut()) {
6951            int name;
6952            if (selection) {
6953                name = com.android.internal.R.string.cut;
6954            } else {
6955                name = com.android.internal.R.string.cutAll;
6956            }
6957
6958            menu.add(0, ID_CUT, 0, name).
6959                setOnMenuItemClickListener(handler).
6960                setAlphabeticShortcut('x');
6961            added = true;
6962        }
6963
6964        if (canCopy()) {
6965            int name;
6966            if (selection) {
6967                name = com.android.internal.R.string.copy;
6968            } else {
6969                name = com.android.internal.R.string.copyAll;
6970            }
6971
6972            menu.add(0, ID_COPY, 0, name).
6973                setOnMenuItemClickListener(handler).
6974                setAlphabeticShortcut('c');
6975            added = true;
6976        }
6977
6978        if (canPaste()) {
6979            menu.add(0, ID_PASTE, 0, com.android.internal.R.string.paste).
6980                    setOnMenuItemClickListener(handler).
6981                    setAlphabeticShortcut('v');
6982            added = true;
6983        }
6984
6985        if (mText instanceof Spanned) {
6986            int selStart = getSelectionStart();
6987            int selEnd = getSelectionEnd();
6988
6989            int min = Math.min(selStart, selEnd);
6990            int max = Math.max(selStart, selEnd);
6991
6992            URLSpan[] urls = ((Spanned) mText).getSpans(min, max,
6993                                                        URLSpan.class);
6994            if (urls.length == 1) {
6995                menu.add(0, ID_COPY_URL, 0,
6996                         com.android.internal.R.string.copyUrl).
6997                            setOnMenuItemClickListener(handler);
6998                added = true;
6999            }
7000        }
7001
7002        if (isInputMethodTarget()) {
7003            menu.add(1, ID_SWITCH_INPUT_METHOD, 0, com.android.internal.R.string.inputMethod).
7004                    setOnMenuItemClickListener(handler);
7005            added = true;
7006        }
7007
7008        String word = getWordForDictionary();
7009        if (word != null) {
7010            menu.add(1, ID_ADD_TO_DICTIONARY, 0,
7011                     getContext().getString(com.android.internal.R.string.addToDictionary, word)).
7012                    setOnMenuItemClickListener(handler);
7013            added = true;
7014
7015        }
7016
7017        if (added) {
7018            menu.setHeaderTitle(com.android.internal.R.string.editTextMenuTitle);
7019        }
7020    }
7021
7022    /**
7023     * Returns whether this text view is a current input method target.  The
7024     * default implementation just checks with {@link InputMethodManager}.
7025     */
7026    public boolean isInputMethodTarget() {
7027        InputMethodManager imm = InputMethodManager.peekInstance();
7028        return imm != null && imm.isActive(this);
7029    }
7030
7031    private static final int ID_SELECT_ALL = android.R.id.selectAll;
7032    private static final int ID_START_SELECTING_TEXT = android.R.id.startSelectingText;
7033    private static final int ID_STOP_SELECTING_TEXT = android.R.id.stopSelectingText;
7034    private static final int ID_CUT = android.R.id.cut;
7035    private static final int ID_COPY = android.R.id.copy;
7036    private static final int ID_PASTE = android.R.id.paste;
7037    private static final int ID_COPY_URL = android.R.id.copyUrl;
7038    private static final int ID_SWITCH_INPUT_METHOD = android.R.id.switchInputMethod;
7039    private static final int ID_ADD_TO_DICTIONARY = android.R.id.addToDictionary;
7040
7041    private class MenuHandler implements MenuItem.OnMenuItemClickListener {
7042        public boolean onMenuItemClick(MenuItem item) {
7043            return onTextContextMenuItem(item.getItemId());
7044        }
7045    }
7046
7047    /**
7048     * Called when a context menu option for the text view is selected.  Currently
7049     * this will be one of: {@link android.R.id#selectAll},
7050     * {@link android.R.id#startSelectingText}, {@link android.R.id#stopSelectingText},
7051     * {@link android.R.id#cut}, {@link android.R.id#copy},
7052     * {@link android.R.id#paste}, {@link android.R.id#copyUrl},
7053     * or {@link android.R.id#switchInputMethod}.
7054     */
7055    public boolean onTextContextMenuItem(int id) {
7056        int selStart = getSelectionStart();
7057        int selEnd = getSelectionEnd();
7058
7059        if (!isFocused()) {
7060            selStart = 0;
7061            selEnd = mText.length();
7062        }
7063
7064        int min = Math.min(selStart, selEnd);
7065        int max = Math.max(selStart, selEnd);
7066
7067        if (min < 0) {
7068            min = 0;
7069        }
7070        if (max < 0) {
7071            max = 0;
7072        }
7073
7074        ClipboardManager clip = (ClipboardManager)getContext()
7075                .getSystemService(Context.CLIPBOARD_SERVICE);
7076
7077        switch (id) {
7078            case ID_SELECT_ALL:
7079                Selection.setSelection((Spannable) mText, 0,
7080                        mText.length());
7081                return true;
7082
7083            case ID_START_SELECTING_TEXT:
7084                MetaKeyKeyListener.startSelecting(this, (Spannable) mText);
7085                return true;
7086
7087            case ID_STOP_SELECTING_TEXT:
7088                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7089                Selection.setSelection((Spannable) mText, getSelectionEnd());
7090                return true;
7091
7092            case ID_CUT:
7093                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7094
7095                if (min == max) {
7096                    min = 0;
7097                    max = mText.length();
7098                }
7099
7100                clip.setText(mTransformed.subSequence(min, max));
7101                ((Editable) mText).delete(min, max);
7102                return true;
7103
7104            case ID_COPY:
7105                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7106
7107                if (min == max) {
7108                    min = 0;
7109                    max = mText.length();
7110                }
7111
7112                clip.setText(mTransformed.subSequence(min, max));
7113                return true;
7114
7115            case ID_PASTE:
7116                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7117
7118                CharSequence paste = clip.getText();
7119
7120                if (paste != null) {
7121                    Selection.setSelection((Spannable) mText, max);
7122                    ((Editable) mText).replace(min, max, paste);
7123                }
7124
7125                return true;
7126
7127            case ID_COPY_URL:
7128                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7129
7130                URLSpan[] urls = ((Spanned) mText).getSpans(min, max,
7131                                                       URLSpan.class);
7132                if (urls.length == 1) {
7133                    clip.setText(urls[0].getURL());
7134                }
7135
7136                return true;
7137
7138            case ID_SWITCH_INPUT_METHOD:
7139                InputMethodManager imm = InputMethodManager.peekInstance();
7140                if (imm != null) {
7141                    imm.showInputMethodPicker();
7142                }
7143                return true;
7144
7145            case ID_ADD_TO_DICTIONARY:
7146                String word = getWordForDictionary();
7147
7148                if (word != null) {
7149                    Intent i = new Intent("com.android.settings.USER_DICTIONARY_INSERT");
7150                    i.putExtra("word", word);
7151                    getContext().startActivity(i);
7152                }
7153
7154                return true;
7155            }
7156
7157        return false;
7158    }
7159
7160    public boolean performLongClick() {
7161        if (super.performLongClick()) {
7162            mEatTouchRelease = true;
7163            return true;
7164        }
7165
7166        return false;
7167    }
7168
7169    @ViewDebug.ExportedProperty
7170    private CharSequence            mText;
7171    private CharSequence            mTransformed;
7172    private BufferType              mBufferType = BufferType.NORMAL;
7173
7174    private int                     mInputType = EditorInfo.TYPE_NULL;
7175    private CharSequence            mHint;
7176    private Layout                  mHintLayout;
7177
7178    private KeyListener             mInput;
7179
7180    private MovementMethod          mMovement;
7181    private TransformationMethod    mTransformation;
7182    private ChangeWatcher           mChangeWatcher;
7183
7184    private ArrayList<TextWatcher>  mListeners = null;
7185
7186    // display attributes
7187    private TextPaint               mTextPaint;
7188    private boolean                 mUserSetTextScaleX;
7189    private Paint                   mHighlightPaint;
7190    private int                     mHighlightColor = 0xFFBBDDFF;
7191    private Layout                  mLayout;
7192
7193    private long                    mShowCursor;
7194    private Blink                   mBlink;
7195    private boolean                 mCursorVisible = true;
7196
7197    private boolean                 mSelectAllOnFocus = false;
7198
7199    private int                     mGravity = Gravity.TOP | Gravity.LEFT;
7200    private boolean                 mHorizontallyScrolling;
7201
7202    private int                     mAutoLinkMask;
7203    private boolean                 mLinksClickable = true;
7204
7205    private float                   mSpacingMult = 1;
7206    private float                   mSpacingAdd = 0;
7207
7208    private static final int        LINES = 1;
7209    private static final int        EMS = LINES;
7210    private static final int        PIXELS = 2;
7211
7212    private int                     mMaximum = Integer.MAX_VALUE;
7213    private int                     mMaxMode = LINES;
7214    private int                     mMinimum = 0;
7215    private int                     mMinMode = LINES;
7216
7217    private int                     mMaxWidth = Integer.MAX_VALUE;
7218    private int                     mMaxWidthMode = PIXELS;
7219    private int                     mMinWidth = 0;
7220    private int                     mMinWidthMode = PIXELS;
7221
7222    private boolean                 mSingleLine;
7223    private int                     mDesiredHeightAtMeasure = -1;
7224    private boolean                 mIncludePad = true;
7225
7226    // tmp primitives, so we don't alloc them on each draw
7227    private Path                    mHighlightPath;
7228    private boolean                 mHighlightPathBogus = true;
7229    private static final RectF      sTempRect = new RectF();
7230
7231    // XXX should be much larger
7232    private static final int        VERY_WIDE = 16384;
7233
7234    private static final int        BLINK = 500;
7235
7236    private static final int ANIMATED_SCROLL_GAP = 250;
7237    private long mLastScroll;
7238    private Scroller mScroller = null;
7239
7240    private BoringLayout.Metrics mBoring;
7241    private BoringLayout.Metrics mHintBoring;
7242
7243    private BoringLayout mSavedLayout, mSavedHintLayout;
7244
7245    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
7246    private InputFilter[] mFilters = NO_FILTERS;
7247    private static final Spanned EMPTY_SPANNED = new SpannedString("");
7248}
7249