TextView.java revision f013e1afd1e68af5e3b868c26a653bbfb39538f8 
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.widget;
18
19import android.content.Context;
20import android.content.res.ColorStateList;
21import android.content.res.Resources;
22import android.content.res.TypedArray;
23import android.content.res.XmlResourceParser;
24import android.graphics.Canvas;
25import android.graphics.Paint;
26import android.graphics.Path;
27import android.graphics.Rect;
28import android.graphics.RectF;
29import android.graphics.Typeface;
30import android.graphics.drawable.Drawable;
31import android.os.Bundle;
32import android.os.Handler;
33import android.os.Parcel;
34import android.os.Parcelable;
35import android.os.SystemClock;
36import android.os.Message;
37import android.text.BoringLayout;
38import android.text.DynamicLayout;
39import android.text.Editable;
40import android.text.GetChars;
41import android.text.GraphicsOperations;
42import android.text.ClipboardManager;
43import android.text.InputFilter;
44import android.text.Layout;
45import android.text.Selection;
46import android.text.SpanWatcher;
47import android.text.Spannable;
48import android.text.Spanned;
49import android.text.SpannedString;
50import android.text.SpannableString;
51import android.text.StaticLayout;
52import android.text.TextPaint;
53import android.text.TextUtils;
54import android.text.TextWatcher;
55import android.text.method.DateKeyListener;
56import android.text.method.DateTimeKeyListener;
57import android.text.method.DialerKeyListener;
58import android.text.method.DigitsKeyListener;
59import android.text.method.KeyListener;
60import android.text.method.LinkMovementMethod;
61import android.text.method.MetaKeyKeyListener;
62import android.text.method.MovementMethod;
63import android.text.method.TimeKeyListener;
64
65import android.text.method.PasswordTransformationMethod;
66import android.text.method.SingleLineTransformationMethod;
67import android.text.method.TextKeyListener;
68import android.text.method.TransformationMethod;
69import android.text.style.ParagraphStyle;
70import android.text.style.URLSpan;
71import android.text.style.UpdateLayout;
72import android.text.util.Linkify;
73import android.util.AttributeSet;
74import android.util.Log;
75import android.util.FloatMath;
76import android.util.TypedValue;
77import android.view.ContextMenu;
78import android.view.Gravity;
79import android.view.KeyEvent;
80import android.view.LayoutInflater;
81import android.view.MenuItem;
82import android.view.MotionEvent;
83import android.view.View;
84import android.view.ViewDebug;
85import android.view.ViewTreeObserver;
86import android.view.ViewGroup.LayoutParams;
87import android.view.animation.AnimationUtils;
88import android.view.inputmethod.CompletionInfo;
89import android.view.inputmethod.ExtractedText;
90import android.view.inputmethod.ExtractedTextRequest;
91import android.view.inputmethod.InputConnection;
92import android.view.inputmethod.InputMethodManager;
93import android.view.inputmethod.EditorInfo;
94import android.widget.RemoteViews.RemoteView;
95
96import java.io.IOException;
97import java.lang.ref.WeakReference;
98import java.util.ArrayList;
99
100import com.android.internal.util.FastMath;
101import com.android.internal.widget.EditableInputConnection;
102
103import org.xmlpull.v1.XmlPullParserException;
104
105/**
106 * Displays text to the user and optionally allows them to edit it.  A TextView
107 * is a complete text editor, however the basic class is configured to not
108 * allow editing; see {@link EditText} for a subclass that configures the text
109 * view for editing.
110 *
111 * <p>
112 * <b>XML attributes</b>
113 * <p>
114 * See {@link android.R.styleable#TextView TextView Attributes},
115 * {@link android.R.styleable#View View Attributes}
116 *
117 * @attr ref android.R.styleable#TextView_text
118 * @attr ref android.R.styleable#TextView_bufferType
119 * @attr ref android.R.styleable#TextView_hint
120 * @attr ref android.R.styleable#TextView_textColor
121 * @attr ref android.R.styleable#TextView_textColorHighlight
122 * @attr ref android.R.styleable#TextView_textColorHint
123 * @attr ref android.R.styleable#TextView_textSize
124 * @attr ref android.R.styleable#TextView_textScaleX
125 * @attr ref android.R.styleable#TextView_typeface
126 * @attr ref android.R.styleable#TextView_textStyle
127 * @attr ref android.R.styleable#TextView_cursorVisible
128 * @attr ref android.R.styleable#TextView_maxLines
129 * @attr ref android.R.styleable#TextView_maxHeight
130 * @attr ref android.R.styleable#TextView_lines
131 * @attr ref android.R.styleable#TextView_height
132 * @attr ref android.R.styleable#TextView_minLines
133 * @attr ref android.R.styleable#TextView_minHeight
134 * @attr ref android.R.styleable#TextView_maxEms
135 * @attr ref android.R.styleable#TextView_maxWidth
136 * @attr ref android.R.styleable#TextView_ems
137 * @attr ref android.R.styleable#TextView_width
138 * @attr ref android.R.styleable#TextView_minEms
139 * @attr ref android.R.styleable#TextView_minWidth
140 * @attr ref android.R.styleable#TextView_gravity
141 * @attr ref android.R.styleable#TextView_scrollHorizontally
142 * @attr ref android.R.styleable#TextView_password
143 * @attr ref android.R.styleable#TextView_singleLine
144 * @attr ref android.R.styleable#TextView_selectAllOnFocus
145 * @attr ref android.R.styleable#TextView_includeFontPadding
146 * @attr ref android.R.styleable#TextView_maxLength
147 * @attr ref android.R.styleable#TextView_shadowColor
148 * @attr ref android.R.styleable#TextView_shadowDx
149 * @attr ref android.R.styleable#TextView_shadowDy
150 * @attr ref android.R.styleable#TextView_shadowRadius
151 * @attr ref android.R.styleable#TextView_autoLink
152 * @attr ref android.R.styleable#TextView_linksClickable
153 * @attr ref android.R.styleable#TextView_numeric
154 * @attr ref android.R.styleable#TextView_digits
155 * @attr ref android.R.styleable#TextView_phoneNumber
156 * @attr ref android.R.styleable#TextView_inputMethod
157 * @attr ref android.R.styleable#TextView_capitalize
158 * @attr ref android.R.styleable#TextView_autoText
159 * @attr ref android.R.styleable#TextView_editable
160 * @attr ref android.R.styleable#TextView_drawableTop
161 * @attr ref android.R.styleable#TextView_drawableBottom
162 * @attr ref android.R.styleable#TextView_drawableRight
163 * @attr ref android.R.styleable#TextView_drawableLeft
164 * @attr ref android.R.styleable#TextView_lineSpacingExtra
165 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
166 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
167 */
168@RemoteView
169public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
170    private static int PRIORITY = 100;
171
172    private ColorStateList mTextColor;
173    private int mCurTextColor;
174    private ColorStateList mHintTextColor;
175    private ColorStateList mLinkTextColor;
176    private int mCurHintTextColor;
177    private boolean mFreezesText;
178    private boolean mFrozenWithFocus;
179
180    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
181    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
182
183    private float mShadowRadius, mShadowDx, mShadowDy;
184
185    private static final int PREDRAW_NOT_REGISTERED = 0;
186    private static final int PREDRAW_PENDING = 1;
187    private static final int PREDRAW_DONE = 2;
188    private int mPreDrawState = PREDRAW_NOT_REGISTERED;
189
190    private TextUtils.TruncateAt mEllipsize = null;
191
192    // Enum for the "typeface" XML parameter.
193    // TODO: How can we get this from the XML instead of hardcoding it here?
194    private static final int SANS = 1;
195    private static final int SERIF = 2;
196    private static final int MONOSPACE = 3;
197
198    // Bitfield for the "numeric" XML parameter.
199    // TODO: How can we get this from the XML instead of hardcoding it here?
200    private static final int SIGNED = 2;
201    private static final int DECIMAL = 4;
202
203    class Drawables {
204        final Rect mCompoundRect = new Rect();
205        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight;
206        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight;
207        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight;
208        int mDrawablePadding;
209    };
210    private Drawables mDrawables;
211
212    private CharSequence mError;
213    private boolean mErrorWasChanged;
214    private PopupWindow mPopup;
215
216    private CharWrapper mCharWrapper = null;
217
218    private boolean mSelectionMoved = false;
219
220    private Marquee mMarquee;
221    private boolean mRestartMarquee;
222
223    private int mMarqueeRepeatLimit = 3;
224
225    class InputContentType {
226        String privateContentType;
227        Bundle extras;
228    }
229    InputContentType mInputContentType;
230
231    class InputMethodState {
232        Rect mCursorRectInWindow = new Rect();
233        RectF mTmpRectF = new RectF();
234        float[] mTmpOffset = new float[2];
235        ExtractedTextRequest mExtracting;
236        final ExtractedText mTmpExtracted = new ExtractedText();
237    }
238    InputMethodState mInputMethodState;
239
240    /*
241     * Kick-start the font cache for the zygote process (to pay the cost of
242     * initializing freetype for our default font only once).
243     */
244    static {
245        Paint p = new Paint();
246        p.setAntiAlias(true);
247        // We don't care about the result, just the side-effect of measuring.
248        p.measureText("H");
249    }
250
251    public TextView(Context context) {
252        this(context, null);
253    }
254
255    public TextView(Context context,
256                    AttributeSet attrs) {
257        this(context, attrs, com.android.internal.R.attr.textViewStyle);
258    }
259
260    public TextView(Context context,
261                    AttributeSet attrs,
262                    int defStyle) {
263        super(context, attrs, defStyle);
264        mText = "";
265
266        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
267        // If we get the paint from the skin, we should set it to left, since
268        // the layout always wants it to be left.
269        // mTextPaint.setTextAlign(Paint.Align.LEFT);
270
271        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
272
273        mMovement = getDefaultMovementMethod();
274        mTransformation = null;
275
276        TypedArray a =
277            context.obtainStyledAttributes(
278                attrs, com.android.internal.R.styleable.TextView, defStyle, 0);
279
280        int textColorHighlight = 0;
281        ColorStateList textColor = null;
282        ColorStateList textColorHint = null;
283        ColorStateList textColorLink = null;
284        int textSize = 15;
285        int typefaceIndex = -1;
286        int styleIndex = -1;
287
288        /*
289         * Look the appearance up without checking first if it exists because
290         * almost every TextView has one and it greatly simplifies the logic
291         * to be able to parse the appearance first and then let specific tags
292         * for this View override it.
293         */
294        TypedArray appearance = null;
295        int ap = a.getResourceId(com.android.internal.R.styleable.TextView_textAppearance, -1);
296        if (ap != -1) {
297            appearance = context.obtainStyledAttributes(ap,
298                                com.android.internal.R.styleable.
299                                TextAppearance);
300        }
301        if (appearance != null) {
302            int n = appearance.getIndexCount();
303            for (int i = 0; i < n; i++) {
304                int attr = appearance.getIndex(i);
305
306                switch (attr) {
307                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
308                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
309                    break;
310
311                case com.android.internal.R.styleable.TextAppearance_textColor:
312                    textColor = appearance.getColorStateList(attr);
313                    break;
314
315                case com.android.internal.R.styleable.TextAppearance_textColorHint:
316                    textColorHint = appearance.getColorStateList(attr);
317                    break;
318
319                case com.android.internal.R.styleable.TextAppearance_textColorLink:
320                    textColorLink = appearance.getColorStateList(attr);
321                    break;
322
323                case com.android.internal.R.styleable.TextAppearance_textSize:
324                    textSize = appearance.getDimensionPixelSize(attr, textSize);
325                    break;
326
327                case com.android.internal.R.styleable.TextAppearance_typeface:
328                    typefaceIndex = appearance.getInt(attr, -1);
329                    break;
330
331                case com.android.internal.R.styleable.TextAppearance_textStyle:
332                    styleIndex = appearance.getInt(attr, -1);
333                    break;
334                }
335            }
336
337            appearance.recycle();
338        }
339
340        boolean editable = getDefaultEditable();
341        CharSequence inputMethod = null;
342        int numeric = 0;
343        CharSequence digits = null;
344        boolean phone = false;
345        boolean autotext = false;
346        int autocap = -1;
347        int buffertype = 0;
348        boolean selectallonfocus = false;
349        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
350            drawableBottom = null;
351        int drawablePadding = 0;
352        int ellipsize = -1;
353        boolean singleLine = false;
354        int maxlength = -1;
355        CharSequence text = "";
356        int shadowcolor = 0;
357        float dx = 0, dy = 0, r = 0;
358        boolean password = false;
359        int contentType = EditorInfo.TYPE_NULL;
360
361        int n = a.getIndexCount();
362        for (int i = 0; i < n; i++) {
363            int attr = a.getIndex(i);
364
365            switch (attr) {
366            case com.android.internal.R.styleable.TextView_editable:
367                editable = a.getBoolean(attr, editable);
368                break;
369
370            case com.android.internal.R.styleable.TextView_inputMethod:
371                inputMethod = a.getText(attr);
372                break;
373
374            case com.android.internal.R.styleable.TextView_numeric:
375                numeric = a.getInt(attr, numeric);
376                break;
377
378            case com.android.internal.R.styleable.TextView_digits:
379                digits = a.getText(attr);
380                break;
381
382            case com.android.internal.R.styleable.TextView_phoneNumber:
383                phone = a.getBoolean(attr, phone);
384                break;
385
386            case com.android.internal.R.styleable.TextView_autoText:
387                autotext = a.getBoolean(attr, autotext);
388                break;
389
390            case com.android.internal.R.styleable.TextView_capitalize:
391                autocap = a.getInt(attr, autocap);
392                break;
393
394            case com.android.internal.R.styleable.TextView_bufferType:
395                buffertype = a.getInt(attr, buffertype);
396                break;
397
398            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
399                selectallonfocus = a.getBoolean(attr, selectallonfocus);
400                break;
401
402            case com.android.internal.R.styleable.TextView_autoLink:
403                mAutoLinkMask = a.getInt(attr, 0);
404                break;
405
406            case com.android.internal.R.styleable.TextView_linksClickable:
407                mLinksClickable = a.getBoolean(attr, true);
408                break;
409
410            case com.android.internal.R.styleable.TextView_drawableLeft:
411                drawableLeft = a.getDrawable(attr);
412                break;
413
414            case com.android.internal.R.styleable.TextView_drawableTop:
415                drawableTop = a.getDrawable(attr);
416                break;
417
418            case com.android.internal.R.styleable.TextView_drawableRight:
419                drawableRight = a.getDrawable(attr);
420                break;
421
422            case com.android.internal.R.styleable.TextView_drawableBottom:
423                drawableBottom = a.getDrawable(attr);
424                break;
425
426            case com.android.internal.R.styleable.TextView_drawablePadding:
427                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
428                break;
429
430            case com.android.internal.R.styleable.TextView_maxLines:
431                setMaxLines(a.getInt(attr, -1));
432                break;
433
434            case com.android.internal.R.styleable.TextView_maxHeight:
435                setMaxHeight(a.getDimensionPixelSize(attr, -1));
436                break;
437
438            case com.android.internal.R.styleable.TextView_lines:
439                setLines(a.getInt(attr, -1));
440                break;
441
442            case com.android.internal.R.styleable.TextView_height:
443                setHeight(a.getDimensionPixelSize(attr, -1));
444                break;
445
446            case com.android.internal.R.styleable.TextView_minLines:
447                setMinLines(a.getInt(attr, -1));
448                break;
449
450            case com.android.internal.R.styleable.TextView_minHeight:
451                setMinHeight(a.getDimensionPixelSize(attr, -1));
452                break;
453
454            case com.android.internal.R.styleable.TextView_maxEms:
455                setMaxEms(a.getInt(attr, -1));
456                break;
457
458            case com.android.internal.R.styleable.TextView_maxWidth:
459                setMaxWidth(a.getDimensionPixelSize(attr, -1));
460                break;
461
462            case com.android.internal.R.styleable.TextView_ems:
463                setEms(a.getInt(attr, -1));
464                break;
465
466            case com.android.internal.R.styleable.TextView_width:
467                setWidth(a.getDimensionPixelSize(attr, -1));
468                break;
469
470            case com.android.internal.R.styleable.TextView_minEms:
471                setMinEms(a.getInt(attr, -1));
472                break;
473
474            case com.android.internal.R.styleable.TextView_minWidth:
475                setMinWidth(a.getDimensionPixelSize(attr, -1));
476                break;
477
478            case com.android.internal.R.styleable.TextView_gravity:
479                setGravity(a.getInt(attr, -1));
480                break;
481
482            case com.android.internal.R.styleable.TextView_hint:
483                setHint(a.getText(attr));
484                break;
485
486            case com.android.internal.R.styleable.TextView_text:
487                text = a.getText(attr);
488                break;
489
490            case com.android.internal.R.styleable.TextView_scrollHorizontally:
491                if (a.getBoolean(attr, false)) {
492                    setHorizontallyScrolling(true);
493                }
494                break;
495
496            case com.android.internal.R.styleable.TextView_singleLine:
497                singleLine = a.getBoolean(attr, singleLine);
498                break;
499
500            case com.android.internal.R.styleable.TextView_ellipsize:
501                ellipsize = a.getInt(attr, ellipsize);
502                break;
503
504            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
505                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
506                break;
507
508            case com.android.internal.R.styleable.TextView_includeFontPadding:
509                if (!a.getBoolean(attr, true)) {
510                    setIncludeFontPadding(false);
511                }
512                break;
513
514            case com.android.internal.R.styleable.TextView_cursorVisible:
515                if (!a.getBoolean(attr, true)) {
516                    setCursorVisible(false);
517                }
518                break;
519
520            case com.android.internal.R.styleable.TextView_maxLength:
521                maxlength = a.getInt(attr, -1);
522                break;
523
524            case com.android.internal.R.styleable.TextView_textScaleX:
525                setTextScaleX(a.getFloat(attr, 1.0f));
526                break;
527
528            case com.android.internal.R.styleable.TextView_freezesText:
529                mFreezesText = a.getBoolean(attr, false);
530                break;
531
532            case com.android.internal.R.styleable.TextView_shadowColor:
533                shadowcolor = a.getInt(attr, 0);
534                break;
535
536            case com.android.internal.R.styleable.TextView_shadowDx:
537                dx = a.getFloat(attr, 0);
538                break;
539
540            case com.android.internal.R.styleable.TextView_shadowDy:
541                dy = a.getFloat(attr, 0);
542                break;
543
544            case com.android.internal.R.styleable.TextView_shadowRadius:
545                r = a.getFloat(attr, 0);
546                break;
547
548            case com.android.internal.R.styleable.TextView_enabled:
549                setEnabled(a.getBoolean(attr, isEnabled()));
550                break;
551
552            case com.android.internal.R.styleable.TextView_textColorHighlight:
553                textColorHighlight = a.getColor(attr, textColorHighlight);
554                break;
555
556            case com.android.internal.R.styleable.TextView_textColor:
557                textColor = a.getColorStateList(attr);
558                break;
559
560            case com.android.internal.R.styleable.TextView_textColorHint:
561                textColorHint = a.getColorStateList(attr);
562                break;
563
564            case com.android.internal.R.styleable.TextView_textColorLink:
565                textColorLink = a.getColorStateList(attr);
566                break;
567
568            case com.android.internal.R.styleable.TextView_textSize:
569                textSize = a.getDimensionPixelSize(attr, textSize);
570                break;
571
572            case com.android.internal.R.styleable.TextView_typeface:
573                typefaceIndex = a.getInt(attr, typefaceIndex);
574                break;
575
576            case com.android.internal.R.styleable.TextView_textStyle:
577                styleIndex = a.getInt(attr, styleIndex);
578                break;
579
580            case com.android.internal.R.styleable.TextView_password:
581                password = a.getBoolean(attr, password);
582                break;
583
584            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
585                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
586                break;
587
588            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
589                mSpacingMult = a.getFloat(attr, mSpacingMult);
590                break;
591
592            case com.android.internal.R.styleable.TextView_inputType:
593                contentType = a.getInt(attr, mInputType);
594                break;
595
596            case com.android.internal.R.styleable.TextView_editorPrivateContentType:
597                setPrivateContentType(a.getString(attr));
598                break;
599
600            case com.android.internal.R.styleable.TextView_editorExtras:
601                try {
602                    setInputExtras(a.getResourceId(attr, 0));
603                } catch (XmlPullParserException e) {
604                    Log.w("TextView", "Failure reading input extras", e);
605                } catch (IOException e) {
606                    Log.w("TextView", "Failure reading input extras", e);
607                }
608                break;
609            }
610        }
611        a.recycle();
612
613        BufferType bufferType = BufferType.EDITABLE;
614
615        if ((contentType&(EditorInfo.TYPE_MASK_CLASS
616                |EditorInfo.TYPE_MASK_VARIATION))
617                == (EditorInfo.TYPE_CLASS_TEXT
618                        |EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
619            password = true;
620        }
621
622        if (inputMethod != null) {
623            Class c;
624
625            try {
626                c = Class.forName(inputMethod.toString());
627            } catch (ClassNotFoundException ex) {
628                throw new RuntimeException(ex);
629            }
630
631            try {
632                mInput = (KeyListener) c.newInstance();
633            } catch (InstantiationException ex) {
634                throw new RuntimeException(ex);
635            } catch (IllegalAccessException ex) {
636                throw new RuntimeException(ex);
637            }
638            try {
639                mInputType = contentType != EditorInfo.TYPE_NULL
640                        ? contentType
641                        : mInput.getInputType();
642            } catch (IncompatibleClassChangeError e) {
643                mInputType = EditorInfo.TYPE_CLASS_TEXT;
644            }
645        } else if (digits != null) {
646            mInput = DigitsKeyListener.getInstance(digits.toString());
647            mInputType = contentType;
648        } else if (contentType != EditorInfo.TYPE_NULL) {
649            setInputType(contentType, true);
650            singleLine = (contentType&(EditorInfo.TYPE_MASK_CLASS
651                            | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) !=
652                    (EditorInfo.TYPE_CLASS_TEXT
653                            | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
654        } else if (phone) {
655            mInput = DialerKeyListener.getInstance();
656            contentType = EditorInfo.TYPE_CLASS_PHONE;
657        } else if (numeric != 0) {
658            mInput = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
659                                                   (numeric & DECIMAL) != 0);
660            contentType = EditorInfo.TYPE_CLASS_NUMBER;
661            if ((numeric & SIGNED) != 0) {
662                contentType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
663            }
664            if ((numeric & DECIMAL) != 0) {
665                contentType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
666            }
667            mInputType = contentType;
668        } else if (autotext || autocap != -1) {
669            TextKeyListener.Capitalize cap;
670
671            contentType = EditorInfo.TYPE_CLASS_TEXT;
672            if (!singleLine) {
673                contentType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
674            }
675
676            switch (autocap) {
677            case 1:
678                cap = TextKeyListener.Capitalize.SENTENCES;
679                contentType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
680                break;
681
682            case 2:
683                cap = TextKeyListener.Capitalize.WORDS;
684                contentType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
685                break;
686
687            case 3:
688                cap = TextKeyListener.Capitalize.CHARACTERS;
689                contentType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
690                break;
691
692            default:
693                cap = TextKeyListener.Capitalize.NONE;
694                break;
695            }
696
697            mInput = TextKeyListener.getInstance(autotext, cap);
698            mInputType = contentType;
699        } else if (editable) {
700            mInput = TextKeyListener.getInstance();
701            mInputType = EditorInfo.TYPE_CLASS_TEXT;
702        } else {
703            mInput = null;
704
705            switch (buffertype) {
706                case 0:
707                    bufferType = BufferType.NORMAL;
708                    break;
709                case 1:
710                    bufferType = BufferType.SPANNABLE;
711                    break;
712                case 2:
713                    bufferType = BufferType.EDITABLE;
714                    break;
715            }
716            mInputType = EditorInfo.TYPE_CLASS_TEXT;
717        }
718
719        if (password) {
720            mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
721                | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD;
722        }
723
724        if (selectallonfocus) {
725            mSelectAllOnFocus = true;
726
727            if (bufferType == BufferType.NORMAL)
728                bufferType = BufferType.SPANNABLE;
729        }
730
731        setCompoundDrawablesWithIntrinsicBounds(
732            drawableLeft, drawableTop, drawableRight, drawableBottom);
733        setCompoundDrawablePadding(drawablePadding);
734
735        if (singleLine) {
736            setSingleLine();
737
738            if (mInput == null && ellipsize < 0) {
739                ellipsize = 3; // END
740            }
741        }
742
743        switch (ellipsize) {
744            case 1:
745                setEllipsize(TextUtils.TruncateAt.START);
746                break;
747            case 2:
748                setEllipsize(TextUtils.TruncateAt.MIDDLE);
749                break;
750            case 3:
751                setEllipsize(TextUtils.TruncateAt.END);
752                break;
753            case 4:
754                setHorizontalFadingEdgeEnabled(true);
755                setEllipsize(TextUtils.TruncateAt.MARQUEE);
756                break;
757        }
758
759        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
760        setHintTextColor(textColorHint);
761        setLinkTextColor(textColorLink);
762        if (textColorHighlight != 0) {
763            setHighlightColor(textColorHighlight);
764        }
765        setRawTextSize(textSize);
766
767        if (password) {
768            setTransformationMethod(PasswordTransformationMethod.getInstance());
769            typefaceIndex = MONOSPACE;
770        }
771
772        setTypefaceByIndex(typefaceIndex, styleIndex);
773
774        if (shadowcolor != 0) {
775            setShadowLayer(r, dx, dy, shadowcolor);
776        }
777
778        if (maxlength >= 0) {
779            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
780        } else {
781            setFilters(NO_FILTERS);
782        }
783
784        setText(text, bufferType);
785
786        /*
787         * Views are not normally focusable unless specified to be.
788         * However, TextViews that have input or movement methods *are*
789         * focusable by default.
790         */
791        a = context.obtainStyledAttributes(attrs,
792                                           com.android.internal.R.styleable.View,
793                                           defStyle, 0);
794
795        boolean focusable = mMovement != null || mInput != null;
796        boolean clickable = focusable;
797        boolean longClickable = focusable;
798
799        n = a.getIndexCount();
800        for (int i = 0; i < n; i++) {
801            int attr = a.getIndex(i);
802
803            switch (attr) {
804            case com.android.internal.R.styleable.View_focusable:
805                focusable = a.getBoolean(attr, focusable);
806                break;
807
808            case com.android.internal.R.styleable.View_clickable:
809                clickable = a.getBoolean(attr, clickable);
810                break;
811
812            case com.android.internal.R.styleable.View_longClickable:
813                longClickable = a.getBoolean(attr, longClickable);
814                break;
815            }
816        }
817        a.recycle();
818
819        setFocusable(focusable);
820        setClickable(clickable);
821        setLongClickable(longClickable);
822    }
823
824    private void setTypefaceByIndex(int typefaceIndex, int styleIndex) {
825        Typeface tf = null;
826        switch (typefaceIndex) {
827            case SANS:
828                tf = Typeface.SANS_SERIF;
829                break;
830
831            case SERIF:
832                tf = Typeface.SERIF;
833                break;
834
835            case MONOSPACE:
836                tf = Typeface.MONOSPACE;
837                break;
838        }
839
840        setTypeface(tf, styleIndex);
841    }
842
843    /**
844     * Sets the typeface and style in which the text should be displayed,
845     * and turns on the fake bold and italic bits in the Paint if the
846     * Typeface that you provided does not have all the bits in the
847     * style that you specified.
848     *
849     * @attr ref android.R.styleable#TextView_typeface
850     * @attr ref android.R.styleable#TextView_textStyle
851     */
852    public void setTypeface(Typeface tf, int style) {
853        if (style > 0) {
854            if (tf == null) {
855                tf = Typeface.defaultFromStyle(style);
856            } else {
857                tf = Typeface.create(tf, style);
858            }
859
860            setTypeface(tf);
861            // now compute what (if any) algorithmic styling is needed
862            int typefaceStyle = tf != null ? tf.getStyle() : 0;
863            int need = style & ~typefaceStyle;
864            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
865            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
866        } else {
867            mTextPaint.setFakeBoldText(false);
868            mTextPaint.setTextSkewX(0);
869            setTypeface(tf);
870        }
871    }
872
873    /**
874     * Subclasses override this to specify that they have a KeyListener
875     * by default even if not specifically called for in the XML options.
876     */
877    protected boolean getDefaultEditable() {
878        return false;
879    }
880
881    /**
882     * Subclasses override this to specify a default movement method.
883     */
884    protected MovementMethod getDefaultMovementMethod() {
885        return null;
886    }
887
888    /**
889     * Return the text the TextView is displaying. If setText() was called with
890     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
891     * the return value from this method to Spannable or Editable, respectively.
892     *
893     * Note: The content of the return value should not be modified. If you want
894     * a modifiable one, you should make your own copy first.
895     */
896    @ViewDebug.CapturedViewProperty
897    public CharSequence getText() {
898        return mText;
899    }
900
901    /**
902     * Returns the length, in characters, of the text managed by this TextView
903     */
904    public int length() {
905        return mText.length();
906    }
907
908    /**
909     * Return the text the TextView is displaying as an Editable object.  If
910     * the text is not editable, null is returned.
911     *
912     * @see #getText
913     */
914    public Editable getEditableText() {
915        return (mText instanceof Editable) ? (Editable)mText : null;
916    }
917
918    /**
919     * @return the height of one standard line in pixels.  Note that markup
920     * within the text can cause individual lines to be taller or shorter
921     * than this height, and the layout may contain additional first-
922     * or last-line padding.
923     */
924    public int getLineHeight() {
925        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult
926                          + mSpacingAdd);
927    }
928
929    /**
930     * @return the Layout that is currently being used to display the text.
931     * This can be null if the text or width has recently changes.
932     */
933    public final Layout getLayout() {
934        return mLayout;
935    }
936
937    /**
938     * @return the current key listener for this TextView.
939     * This will frequently be null for non-EditText TextViews.
940     */
941    public final KeyListener getKeyListener() {
942        return mInput;
943    }
944
945    /**
946     * Sets the key listener to be used with this TextView.  This can be null
947     * to disallow user input.  Note that this method has significant and
948     * subtle interactions with soft keyboards and other input method:
949     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
950     * for important details.  Calling this method will replace the current
951     * content type of the text view with the content type returned by the
952     * key listener.
953     * <p>
954     * Be warned that if you want a TextView with a key listener or movement
955     * method not to be focusable, or if you want a TextView without a
956     * key listener or movement method to be focusable, you must call
957     * {@link #setFocusable} again after calling this to get the focusability
958     * back the way you want it.
959     *
960     * @attr ref android.R.styleable#TextView_numeric
961     * @attr ref android.R.styleable#TextView_digits
962     * @attr ref android.R.styleable#TextView_phoneNumber
963     * @attr ref android.R.styleable#TextView_inputMethod
964     * @attr ref android.R.styleable#TextView_capitalize
965     * @attr ref android.R.styleable#TextView_autoText
966     */
967    public void setKeyListener(KeyListener input) {
968        setKeyListenerOnly(input);
969        fixFocusableAndClickableSettings();
970
971        if (input != null) {
972            try {
973                mInputType = mInput.getInputType();
974            } catch (IncompatibleClassChangeError e) {
975                mInputType = EditorInfo.TYPE_CLASS_TEXT;
976            }
977            if ((mInputType&EditorInfo.TYPE_MASK_CLASS)
978                    == EditorInfo.TYPE_CLASS_TEXT) {
979                if (mSingleLine) {
980                    mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
981                } else {
982                    mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
983                }
984            }
985        } else {
986            mInputType = EditorInfo.TYPE_NULL;
987        }
988
989        InputMethodManager imm = InputMethodManager.peekInstance();
990        if (imm != null) imm.restartInput(this);
991    }
992
993    private void setKeyListenerOnly(KeyListener input) {
994        mInput = input;
995        if (mInput != null && !(mText instanceof Editable))
996            setText(mText);
997
998        setFilters((Editable) mText, mFilters);
999    }
1000
1001    /**
1002     * @return the movement method being used for this TextView.
1003     * This will frequently be null for non-EditText TextViews.
1004     */
1005    public final MovementMethod getMovementMethod() {
1006        return mMovement;
1007    }
1008
1009    /**
1010     * Sets the movement method (arrow key handler) to be used for
1011     * this TextView.  This can be null to disallow using the arrow keys
1012     * to move the cursor or scroll the view.
1013     * <p>
1014     * Be warned that if you want a TextView with a key listener or movement
1015     * method not to be focusable, or if you want a TextView without a
1016     * key listener or movement method to be focusable, you must call
1017     * {@link #setFocusable} again after calling this to get the focusability
1018     * back the way you want it.
1019     */
1020    public final void setMovementMethod(MovementMethod movement) {
1021        mMovement = movement;
1022
1023        if (mMovement != null && !(mText instanceof Spannable))
1024            setText(mText);
1025
1026        fixFocusableAndClickableSettings();
1027    }
1028
1029    private void fixFocusableAndClickableSettings() {
1030        if ((mMovement != null) || mInput != null) {
1031            setFocusable(true);
1032            setClickable(true);
1033            setLongClickable(true);
1034        } else {
1035            setFocusable(false);
1036            setClickable(false);
1037            setLongClickable(false);
1038        }
1039    }
1040
1041    /**
1042     * @return the current transformation method for this TextView.
1043     * This will frequently be null except for single-line and password
1044     * fields.
1045     */
1046    public final TransformationMethod getTransformationMethod() {
1047        return mTransformation;
1048    }
1049
1050    /**
1051     * Sets the transformation that is applied to the text that this
1052     * TextView is displaying.
1053     *
1054     * @attr ref android.R.styleable#TextView_password
1055     * @attr ref android.R.styleable#TextView_singleLine
1056     */
1057    public final void setTransformationMethod(TransformationMethod method) {
1058        if (mTransformation != null) {
1059            if (mText instanceof Spannable) {
1060                ((Spannable) mText).removeSpan(mTransformation);
1061            }
1062        }
1063
1064        mTransformation = method;
1065
1066        setText(mText);
1067    }
1068
1069    /**
1070     * Returns the top padding of the view, plus space for the top
1071     * Drawable if any.
1072     */
1073    public int getCompoundPaddingTop() {
1074        final Drawables dr = mDrawables;
1075        if (dr == null || dr.mDrawableTop == null) {
1076            return mPaddingTop;
1077        } else {
1078            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1079        }
1080    }
1081
1082    /**
1083     * Returns the bottom padding of the view, plus space for the bottom
1084     * Drawable if any.
1085     */
1086    public int getCompoundPaddingBottom() {
1087        final Drawables dr = mDrawables;
1088        if (dr == null || dr.mDrawableBottom == null) {
1089            return mPaddingBottom;
1090        } else {
1091            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1092        }
1093    }
1094
1095    /**
1096     * Returns the left padding of the view, plus space for the left
1097     * Drawable if any.
1098     */
1099    public int getCompoundPaddingLeft() {
1100        final Drawables dr = mDrawables;
1101        if (dr == null || dr.mDrawableLeft == null) {
1102            return mPaddingLeft;
1103        } else {
1104            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1105        }
1106    }
1107
1108    /**
1109     * Returns the right padding of the view, plus space for the right
1110     * Drawable if any.
1111     */
1112    public int getCompoundPaddingRight() {
1113        final Drawables dr = mDrawables;
1114        if (dr == null || dr.mDrawableRight == null) {
1115            return mPaddingRight;
1116        } else {
1117            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1118        }
1119    }
1120
1121    /**
1122     * Returns the extended top padding of the view, including both the
1123     * top Drawable if any and any extra space to keep more than maxLines
1124     * of text from showing.  It is only valid to call this after measuring.
1125     */
1126    public int getExtendedPaddingTop() {
1127        if (mMaxMode != LINES) {
1128            return getCompoundPaddingTop();
1129        }
1130
1131        if (mLayout.getLineCount() <= mMaximum) {
1132            return getCompoundPaddingTop();
1133        }
1134
1135        int top = getCompoundPaddingTop();
1136        int bottom = getCompoundPaddingBottom();
1137        int viewht = getHeight() - top - bottom;
1138        int layoutht = mLayout.getLineTop(mMaximum);
1139
1140        if (layoutht >= viewht) {
1141            return top;
1142        }
1143
1144        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1145        if (gravity == Gravity.TOP) {
1146            return top;
1147        } else if (gravity == Gravity.BOTTOM) {
1148            return top + viewht - layoutht;
1149        } else { // (gravity == Gravity.CENTER_VERTICAL)
1150            return top + (viewht - layoutht) / 2;
1151        }
1152    }
1153
1154    /**
1155     * Returns the extended bottom padding of the view, including both the
1156     * bottom Drawable if any and any extra space to keep more than maxLines
1157     * of text from showing.  It is only valid to call this after measuring.
1158     */
1159    public int getExtendedPaddingBottom() {
1160        if (mMaxMode != LINES) {
1161            return getCompoundPaddingBottom();
1162        }
1163
1164        if (mLayout.getLineCount() <= mMaximum) {
1165            return getCompoundPaddingBottom();
1166        }
1167
1168        int top = getCompoundPaddingTop();
1169        int bottom = getCompoundPaddingBottom();
1170        int viewht = getHeight() - top - bottom;
1171        int layoutht = mLayout.getLineTop(mMaximum);
1172
1173        if (layoutht >= viewht) {
1174            return bottom;
1175        }
1176
1177        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1178        if (gravity == Gravity.TOP) {
1179            return bottom + viewht - layoutht;
1180        } else if (gravity == Gravity.BOTTOM) {
1181            return bottom;
1182        } else { // (gravity == Gravity.CENTER_VERTICAL)
1183            return bottom + (viewht - layoutht) / 2;
1184        }
1185    }
1186
1187    /**
1188     * Returns the total left padding of the view, including the left
1189     * Drawable if any.
1190     */
1191    public int getTotalPaddingLeft() {
1192        return getCompoundPaddingLeft();
1193    }
1194
1195    /**
1196     * Returns the total right padding of the view, including the right
1197     * Drawable if any.
1198     */
1199    public int getTotalPaddingRight() {
1200        return getCompoundPaddingRight();
1201    }
1202
1203    /**
1204     * Returns the total top padding of the view, including the top
1205     * Drawable if any, the extra space to keep more than maxLines
1206     * from showing, and the vertical offset for gravity, if any.
1207     */
1208    public int getTotalPaddingTop() {
1209        return getExtendedPaddingTop() + getVerticalOffset(true);
1210    }
1211
1212    /**
1213     * Returns the total bottom padding of the view, including the bottom
1214     * Drawable if any, the extra space to keep more than maxLines
1215     * from showing, and the vertical offset for gravity, if any.
1216     */
1217    public int getTotalPaddingBottom() {
1218        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1219    }
1220
1221    /**
1222     * Sets the Drawables (if any) to appear to the left of, above,
1223     * to the right of, and below the text.  Use null if you do not
1224     * want a Drawable there.  The Drawables must already have had
1225     * {@link Drawable#setBounds} called.
1226     *
1227     * @attr ref android.R.styleable#TextView_drawableLeft
1228     * @attr ref android.R.styleable#TextView_drawableTop
1229     * @attr ref android.R.styleable#TextView_drawableRight
1230     * @attr ref android.R.styleable#TextView_drawableBottom
1231     */
1232    public void setCompoundDrawables(Drawable left, Drawable top,
1233                                     Drawable right, Drawable bottom) {
1234        Drawables dr = mDrawables;
1235
1236        final boolean drawables = left != null || top != null
1237                || right != null || bottom != null;
1238
1239        if (!drawables) {
1240            // Clearing drawables...  can we free the data structure?
1241            if (dr != null) {
1242                if (dr.mDrawablePadding == 0) {
1243                    mDrawables = null;
1244                } else {
1245                    // We need to retain the last set padding, so just clear
1246                    // out all of the fields in the existing structure.
1247                    dr.mDrawableLeft = null;
1248                    dr.mDrawableTop = null;
1249                    dr.mDrawableRight = null;
1250                    dr.mDrawableBottom = null;
1251                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1252                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1253                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1254                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1255                }
1256            }
1257        } else {
1258            if (dr == null) {
1259                mDrawables = dr = new Drawables();
1260            }
1261
1262            dr.mDrawableLeft = left;
1263            dr.mDrawableTop = top;
1264            dr.mDrawableRight = right;
1265            dr.mDrawableBottom = bottom;
1266
1267            final Rect compoundRect = dr.mCompoundRect;
1268            int[] state = null;
1269
1270            state = getDrawableState();
1271
1272            if (left != null) {
1273                left.setState(state);
1274                left.copyBounds(compoundRect);
1275                dr.mDrawableSizeLeft = compoundRect.width();
1276                dr.mDrawableHeightLeft = compoundRect.height();
1277            } else {
1278                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1279            }
1280
1281            if (right != null) {
1282                right.setState(state);
1283                right.copyBounds(compoundRect);
1284                dr.mDrawableSizeRight = compoundRect.width();
1285                dr.mDrawableHeightRight = compoundRect.height();
1286            } else {
1287                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1288            }
1289
1290            if (top != null) {
1291                top.setState(state);
1292                top.copyBounds(compoundRect);
1293                dr.mDrawableSizeTop = compoundRect.height();
1294                dr.mDrawableWidthTop = compoundRect.width();
1295            } else {
1296                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1297            }
1298
1299            if (bottom != null) {
1300                bottom.setState(state);
1301                bottom.copyBounds(compoundRect);
1302                dr.mDrawableSizeBottom = compoundRect.height();
1303                dr.mDrawableWidthBottom = compoundRect.width();
1304            } else {
1305                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1306            }
1307        }
1308
1309        invalidate();
1310        requestLayout();
1311    }
1312
1313    /**
1314     * Sets the Drawables (if any) to appear to the left of, above,
1315     * to the right of, and below the text.  Use 0 if you do not
1316     * want a Drawable there. The Drawables' bounds will be set to
1317     * their intrinsic bounds.
1318     *
1319     * @param left Resource identifier of the left Drawable.
1320     * @param top Resource identifier of the top Drawable.
1321     * @param right Resource identifier of the right Drawable.
1322     * @param bottom Resource identifier of the bottom Drawable.
1323     *
1324     * @attr ref android.R.styleable#TextView_drawableLeft
1325     * @attr ref android.R.styleable#TextView_drawableTop
1326     * @attr ref android.R.styleable#TextView_drawableRight
1327     * @attr ref android.R.styleable#TextView_drawableBottom
1328     */
1329    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1330        final Resources resources = getContext().getResources();
1331        setCompoundDrawables(left != 0 ? resources.getDrawable(left) : null,
1332                top != 0 ? resources.getDrawable(top) : null,
1333                right != 0 ? resources.getDrawable(right) : null,
1334                bottom != 0 ? resources.getDrawable(bottom) : null);
1335    }
1336
1337    /**
1338     * Sets the Drawables (if any) to appear to the left of, above,
1339     * to the right of, and below the text.  Use null if you do not
1340     * want a Drawable there. The Drawables' bounds will be set to
1341     * their intrinsic bounds.
1342     *
1343     * @attr ref android.R.styleable#TextView_drawableLeft
1344     * @attr ref android.R.styleable#TextView_drawableTop
1345     * @attr ref android.R.styleable#TextView_drawableRight
1346     * @attr ref android.R.styleable#TextView_drawableBottom
1347     */
1348    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1349            Drawable right, Drawable bottom) {
1350
1351        if (left != null) {
1352            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1353        }
1354        if (right != null) {
1355            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1356        }
1357        if (top != null) {
1358            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1359        }
1360        if (bottom != null) {
1361            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
1362        }
1363        setCompoundDrawables(left, top, right, bottom);
1364    }
1365
1366    /**
1367     * Returns drawables for the left, top, right, and bottom borders.
1368     */
1369    public Drawable[] getCompoundDrawables() {
1370        final Drawables dr = mDrawables;
1371        if (dr != null) {
1372            return new Drawable[] {
1373                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
1374            };
1375        } else {
1376            return new Drawable[] { null, null, null, null };
1377        }
1378    }
1379
1380    /**
1381     * Sets the size of the padding between the compound drawables and
1382     * the text.
1383     *
1384     * @attr ref android.R.styleable#TextView_drawablePadding
1385     */
1386    public void setCompoundDrawablePadding(int pad) {
1387        Drawables dr = mDrawables;
1388        if (pad == 0) {
1389            if (dr != null) {
1390                dr.mDrawablePadding = pad;
1391            }
1392        } else {
1393            if (dr == null) {
1394                mDrawables = dr = new Drawables();
1395            }
1396            dr.mDrawablePadding = pad;
1397        }
1398
1399        invalidate();
1400        requestLayout();
1401    }
1402
1403    /**
1404     * Returns the padding between the compound drawables and the text.
1405     */
1406    public int getCompoundDrawablePadding() {
1407        final Drawables dr = mDrawables;
1408        return dr != null ? dr.mDrawablePadding : 0;
1409    }
1410
1411    @Override
1412    public void setPadding(int left, int top, int right, int bottom) {
1413        if (left != getPaddingLeft() ||
1414            right != getPaddingRight() ||
1415            top != getPaddingTop() ||
1416            bottom != getPaddingBottom()) {
1417            nullLayouts();
1418        }
1419
1420        // the super call will requestLayout()
1421        super.setPadding(left, top, right, bottom);
1422        invalidate();
1423    }
1424
1425    /**
1426     * Gets the autolink mask of the text.  See {@link
1427     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1428     * possible values.
1429     *
1430     * @attr ref android.R.styleable#TextView_autoLink
1431     */
1432    public final int getAutoLinkMask() {
1433        return mAutoLinkMask;
1434    }
1435
1436    /**
1437     * Sets the text color, size, style, hint color, and highlight color
1438     * from the specified TextAppearance resource.
1439     */
1440    public void setTextAppearance(Context context, int resid) {
1441        TypedArray appearance =
1442            context.obtainStyledAttributes(resid,
1443                                           com.android.internal.R.styleable.TextAppearance);
1444
1445        int color;
1446        ColorStateList colors;
1447        int ts;
1448
1449        color = appearance.getColor(com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
1450        if (color != 0) {
1451            setHighlightColor(color);
1452        }
1453
1454        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1455                                              TextAppearance_textColor);
1456        if (colors != null) {
1457            setTextColor(colors);
1458        }
1459
1460        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
1461                                              TextAppearance_textSize, 0);
1462        if (ts != 0) {
1463            setRawTextSize(ts);
1464        }
1465
1466        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1467                                              TextAppearance_textColorHint);
1468        if (colors != null) {
1469            setHintTextColor(colors);
1470        }
1471
1472        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1473                                              TextAppearance_textColorLink);
1474        if (colors != null) {
1475            setLinkTextColor(colors);
1476        }
1477
1478        int typefaceIndex, styleIndex;
1479
1480        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
1481                                          TextAppearance_typeface, -1);
1482        styleIndex = appearance.getInt(com.android.internal.R.styleable.
1483                                       TextAppearance_textStyle, -1);
1484
1485        setTypefaceByIndex(typefaceIndex, styleIndex);
1486        appearance.recycle();
1487    }
1488
1489    /**
1490     * @return the size (in pixels) of the default text size in this TextView.
1491     */
1492    public float getTextSize() {
1493        return mTextPaint.getTextSize();
1494    }
1495
1496    /**
1497     * Set the default text size to the given value, interpreted as "scaled
1498     * pixel" units.  This size is adjusted based on the current density and
1499     * user font size preference.
1500     *
1501     * @param size The scaled pixel size.
1502     *
1503     * @attr ref android.R.styleable#TextView_textSize
1504     */
1505    public void setTextSize(float size) {
1506        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
1507    }
1508
1509    /**
1510     * Set the default text size to a given unit and value.  See {@link
1511     * TypedValue} for the possible dimension units.
1512     *
1513     * @param unit The desired dimension unit.
1514     * @param size The desired size in the given units.
1515     *
1516     * @attr ref android.R.styleable#TextView_textSize
1517     */
1518    public void setTextSize(int unit, float size) {
1519        Context c = getContext();
1520        Resources r;
1521
1522        if (c == null)
1523            r = Resources.getSystem();
1524        else
1525            r = c.getResources();
1526
1527        setRawTextSize(TypedValue.applyDimension(
1528            unit, size, r.getDisplayMetrics()));
1529    }
1530
1531    private void setRawTextSize(float size) {
1532        if (size != mTextPaint.getTextSize()) {
1533            mTextPaint.setTextSize(size);
1534
1535            if (mLayout != null) {
1536                nullLayouts();
1537                requestLayout();
1538                invalidate();
1539            }
1540        }
1541    }
1542
1543    /**
1544     * @return the extent by which text is currently being stretched
1545     * horizontally.  This will usually be 1.
1546     */
1547    public float getTextScaleX() {
1548        return mTextPaint.getTextScaleX();
1549    }
1550
1551    /**
1552     * Sets the extent by which text should be stretched horizontally.
1553     *
1554     * @attr ref android.R.styleable#TextView_textScaleX
1555     */
1556    public void setTextScaleX(float size) {
1557        if (size != mTextPaint.getTextScaleX()) {
1558            mTextPaint.setTextScaleX(size);
1559
1560            if (mLayout != null) {
1561                nullLayouts();
1562                requestLayout();
1563                invalidate();
1564            }
1565        }
1566    }
1567
1568    /**
1569     * Sets the typeface and style in which the text should be displayed.
1570     * Note that not all Typeface families actually have bold and italic
1571     * variants, so you may need to use
1572     * {@link #setTypeface(Typeface, int)} to get the appearance
1573     * that you actually want.
1574     *
1575     * @attr ref android.R.styleable#TextView_typeface
1576     * @attr ref android.R.styleable#TextView_textStyle
1577     */
1578    public void setTypeface(Typeface tf) {
1579        if (mTextPaint.getTypeface() != tf) {
1580            mTextPaint.setTypeface(tf);
1581
1582            if (mLayout != null) {
1583                nullLayouts();
1584                requestLayout();
1585                invalidate();
1586            }
1587        }
1588    }
1589
1590    /**
1591     * @return the current typeface and style in which the text is being
1592     * displayed.
1593     */
1594    public Typeface getTypeface() {
1595        return mTextPaint.getTypeface();
1596    }
1597
1598    /**
1599     * Sets the text color for all the states (normal, selected,
1600     * focused) to be this color.
1601     *
1602     * @attr ref android.R.styleable#TextView_textColor
1603     */
1604    public void setTextColor(int color) {
1605        mTextColor = ColorStateList.valueOf(color);
1606        updateTextColors();
1607    }
1608
1609    /**
1610     * Sets the text color.
1611     *
1612     * @attr ref android.R.styleable#TextView_textColor
1613     */
1614    public void setTextColor(ColorStateList colors) {
1615        if (colors == null) {
1616            throw new NullPointerException();
1617        }
1618
1619        mTextColor = colors;
1620        updateTextColors();
1621    }
1622
1623    /**
1624     * Return the set of text colors.
1625     *
1626     * @return Returns the set of text colors.
1627     */
1628    public final ColorStateList getTextColors() {
1629        return mTextColor;
1630    }
1631
1632    /**
1633     * <p>Return the current color selected for normal text.</p>
1634     *
1635     * @return Returns the current text color.
1636     */
1637    public final int getCurrentTextColor() {
1638        return mCurTextColor;
1639    }
1640
1641    /**
1642     * Sets the color used to display the selection highlight.
1643     *
1644     * @attr ref android.R.styleable#TextView_textColorHighlight
1645     */
1646    public void setHighlightColor(int color) {
1647        if (mHighlightColor != color) {
1648            mHighlightColor = color;
1649            invalidate();
1650        }
1651    }
1652
1653    /**
1654     * Gives the text a shadow of the specified radius and color, the specified
1655     * distance from its normal position.
1656     *
1657     * @attr ref android.R.styleable#TextView_shadowColor
1658     * @attr ref android.R.styleable#TextView_shadowDx
1659     * @attr ref android.R.styleable#TextView_shadowDy
1660     * @attr ref android.R.styleable#TextView_shadowRadius
1661     */
1662    public void setShadowLayer(float radius, float dx, float dy, int color) {
1663        mTextPaint.setShadowLayer(radius, dx, dy, color);
1664
1665        mShadowRadius = radius;
1666        mShadowDx = dx;
1667        mShadowDy = dy;
1668
1669        invalidate();
1670    }
1671
1672    /**
1673     * @return the base paint used for the text.  Please use this only to
1674     * consult the Paint's properties and not to change them.
1675     */
1676    public TextPaint getPaint() {
1677        return mTextPaint;
1678    }
1679
1680    /**
1681     * Sets the autolink mask of the text.  See {@link
1682     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1683     * possible values.
1684     *
1685     * @attr ref android.R.styleable#TextView_autoLink
1686     */
1687    public final void setAutoLinkMask(int mask) {
1688        mAutoLinkMask = mask;
1689    }
1690
1691    /**
1692     * Sets whether the movement method will automatically be set to
1693     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1694     * set to nonzero and links are detected in {@link #setText}.
1695     * The default is true.
1696     *
1697     * @attr ref android.R.styleable#TextView_linksClickable
1698     */
1699    public final void setLinksClickable(boolean whether) {
1700        mLinksClickable = whether;
1701    }
1702
1703    /**
1704     * Returns whether the movement method will automatically be set to
1705     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1706     * set to nonzero and links are detected in {@link #setText}.
1707     * The default is true.
1708     *
1709     * @attr ref android.R.styleable#TextView_linksClickable
1710     */
1711    public final boolean getLinksClickable() {
1712        return mLinksClickable;
1713    }
1714
1715    /**
1716     * Returns the list of URLSpans attached to the text
1717     * (by {@link Linkify} or otherwise) if any.  You can call
1718     * {@link URLSpan#getURL} on them to find where they link to
1719     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
1720     * to find the region of the text they are attached to.
1721     */
1722    public URLSpan[] getUrls() {
1723        if (mText instanceof Spanned) {
1724            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
1725        } else {
1726            return new URLSpan[0];
1727        }
1728    }
1729
1730    /**
1731     * Sets the color of the hint text.
1732     *
1733     * @attr ref android.R.styleable#TextView_textColorHint
1734     */
1735    public final void setHintTextColor(int color) {
1736        mHintTextColor = ColorStateList.valueOf(color);
1737        updateTextColors();
1738    }
1739
1740    /**
1741     * Sets the color of the hint text.
1742     *
1743     * @attr ref android.R.styleable#TextView_textColorHint
1744     */
1745    public final void setHintTextColor(ColorStateList colors) {
1746        mHintTextColor = colors;
1747        updateTextColors();
1748    }
1749
1750    /**
1751     * <p>Return the color used to paint the hint text.</p>
1752     *
1753     * @return Returns the list of hint text colors.
1754     */
1755    public final ColorStateList getHintTextColors() {
1756        return mHintTextColor;
1757    }
1758
1759    /**
1760     * <p>Return the current color selected to paint the hint text.</p>
1761     *
1762     * @return Returns the current hint text color.
1763     */
1764    public final int getCurrentHintTextColor() {
1765        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
1766    }
1767
1768    /**
1769     * Sets the color of links in the text.
1770     *
1771     * @attr ref android.R.styleable#TextView_textColorLink
1772     */
1773    public final void setLinkTextColor(int color) {
1774        mLinkTextColor = ColorStateList.valueOf(color);
1775        updateTextColors();
1776    }
1777
1778    /**
1779     * Sets the color of links in the text.
1780     *
1781     * @attr ref android.R.styleable#TextView_textColorLink
1782     */
1783    public final void setLinkTextColor(ColorStateList colors) {
1784        mLinkTextColor = colors;
1785        updateTextColors();
1786    }
1787
1788    /**
1789     * <p>Returns the color used to paint links in the text.</p>
1790     *
1791     * @return Returns the list of link text colors.
1792     */
1793    public final ColorStateList getLinkTextColors() {
1794        return mLinkTextColor;
1795    }
1796
1797    /**
1798     * Sets the horizontal alignment of the text and the
1799     * vertical gravity that will be used when there is extra space
1800     * in the TextView beyond what is required for the text itself.
1801     *
1802     * @see android.view.Gravity
1803     * @attr ref android.R.styleable#TextView_gravity
1804     */
1805    public void setGravity(int gravity) {
1806        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == 0) {
1807            gravity |= Gravity.LEFT;
1808        }
1809        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
1810            gravity |= Gravity.TOP;
1811        }
1812
1813        boolean newLayout = false;
1814
1815        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) !=
1816            (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK)) {
1817            newLayout = true;
1818        }
1819
1820        if (gravity != mGravity) {
1821            invalidate();
1822        }
1823
1824        mGravity = gravity;
1825
1826        if (mLayout != null && newLayout) {
1827            // XXX this is heavy-handed because no actual content changes.
1828            int want = mLayout.getWidth();
1829            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
1830
1831            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
1832                          mRight - mLeft - getCompoundPaddingLeft() -
1833                          getCompoundPaddingRight(), true);
1834        }
1835    }
1836
1837    /**
1838     * Returns the horizontal and vertical alignment of this TextView.
1839     *
1840     * @see android.view.Gravity
1841     * @attr ref android.R.styleable#TextView_gravity
1842     */
1843    public int getGravity() {
1844        return mGravity;
1845    }
1846
1847    /**
1848     * @return the flags on the Paint being used to display the text.
1849     * @see Paint#getFlags
1850     */
1851    public int getPaintFlags() {
1852        return mTextPaint.getFlags();
1853    }
1854
1855    /**
1856     * Sets flags on the Paint being used to display the text and
1857     * reflows the text if they are different from the old flags.
1858     * @see Paint#setFlags
1859     */
1860    public void setPaintFlags(int flags) {
1861        if (mTextPaint.getFlags() != flags) {
1862            mTextPaint.setFlags(flags);
1863
1864            if (mLayout != null) {
1865                nullLayouts();
1866                requestLayout();
1867                invalidate();
1868            }
1869        }
1870    }
1871
1872    /**
1873     * Sets whether the text should be allowed to be wider than the
1874     * View is.  If false, it will be wrapped to the width of the View.
1875     *
1876     * @attr ref android.R.styleable#TextView_scrollHorizontally
1877     */
1878    public void setHorizontallyScrolling(boolean whether) {
1879        mHorizontallyScrolling = whether;
1880
1881        if (mLayout != null) {
1882            nullLayouts();
1883            requestLayout();
1884            invalidate();
1885        }
1886    }
1887
1888    /**
1889     * Makes the TextView at least this many lines tall
1890     *
1891     * @attr ref android.R.styleable#TextView_minLines
1892     */
1893    public void setMinLines(int minlines) {
1894        mMinimum = minlines;
1895        mMinMode = LINES;
1896
1897        requestLayout();
1898        invalidate();
1899    }
1900
1901    /**
1902     * Makes the TextView at least this many pixels tall
1903     *
1904     * @attr ref android.R.styleable#TextView_minHeight
1905     */
1906    public void setMinHeight(int minHeight) {
1907        mMinimum = minHeight;
1908        mMinMode = PIXELS;
1909
1910        requestLayout();
1911        invalidate();
1912    }
1913
1914    /**
1915     * Makes the TextView at most this many lines tall
1916     *
1917     * @attr ref android.R.styleable#TextView_maxLines
1918     */
1919    public void setMaxLines(int maxlines) {
1920        mMaximum = maxlines;
1921        mMaxMode = LINES;
1922
1923        requestLayout();
1924        invalidate();
1925    }
1926
1927    /**
1928     * Makes the TextView at most this many pixels tall
1929     *
1930     * @attr ref android.R.styleable#TextView_maxHeight
1931     */
1932    public void setMaxHeight(int maxHeight) {
1933        mMaximum = maxHeight;
1934        mMaxMode = PIXELS;
1935
1936        requestLayout();
1937        invalidate();
1938    }
1939
1940    /**
1941     * Makes the TextView exactly this many lines tall
1942     *
1943     * @attr ref android.R.styleable#TextView_lines
1944     */
1945    public void setLines(int lines) {
1946        mMaximum = mMinimum = lines;
1947        mMaxMode = mMinMode = LINES;
1948
1949        requestLayout();
1950        invalidate();
1951    }
1952
1953    /**
1954     * Makes the TextView exactly this many pixels tall.
1955     * You could do the same thing by specifying this number in the
1956     * LayoutParams.
1957     *
1958     * @attr ref android.R.styleable#TextView_height
1959     */
1960    public void setHeight(int pixels) {
1961        mMaximum = mMinimum = pixels;
1962        mMaxMode = mMinMode = PIXELS;
1963
1964        requestLayout();
1965        invalidate();
1966    }
1967
1968    /**
1969     * Makes the TextView at least this many ems wide
1970     *
1971     * @attr ref android.R.styleable#TextView_minEms
1972     */
1973    public void setMinEms(int minems) {
1974        mMinWidth = minems;
1975        mMinWidthMode = EMS;
1976
1977        requestLayout();
1978        invalidate();
1979    }
1980
1981    /**
1982     * Makes the TextView at least this many pixels wide
1983     *
1984     * @attr ref android.R.styleable#TextView_minWidth
1985     */
1986    public void setMinWidth(int minpixels) {
1987        mMinWidth = minpixels;
1988        mMinWidthMode = PIXELS;
1989
1990        requestLayout();
1991        invalidate();
1992    }
1993
1994    /**
1995     * Makes the TextView at most this many ems wide
1996     *
1997     * @attr ref android.R.styleable#TextView_maxEms
1998     */
1999    public void setMaxEms(int maxems) {
2000        mMaxWidth = maxems;
2001        mMaxWidthMode = EMS;
2002
2003        requestLayout();
2004        invalidate();
2005    }
2006
2007    /**
2008     * Makes the TextView at most this many pixels wide
2009     *
2010     * @attr ref android.R.styleable#TextView_maxWidth
2011     */
2012    public void setMaxWidth(int maxpixels) {
2013        mMaxWidth = maxpixels;
2014        mMaxWidthMode = PIXELS;
2015
2016        requestLayout();
2017        invalidate();
2018    }
2019
2020    /**
2021     * Makes the TextView exactly this many ems wide
2022     *
2023     * @attr ref android.R.styleable#TextView_ems
2024     */
2025    public void setEms(int ems) {
2026        mMaxWidth = mMinWidth = ems;
2027        mMaxWidthMode = mMinWidthMode = EMS;
2028
2029        requestLayout();
2030        invalidate();
2031    }
2032
2033    /**
2034     * Makes the TextView exactly this many pixels wide.
2035     * You could do the same thing by specifying this number in the
2036     * LayoutParams.
2037     *
2038     * @attr ref android.R.styleable#TextView_width
2039     */
2040    public void setWidth(int pixels) {
2041        mMaxWidth = mMinWidth = pixels;
2042        mMaxWidthMode = mMinWidthMode = PIXELS;
2043
2044        requestLayout();
2045        invalidate();
2046    }
2047
2048
2049    /**
2050     * Sets line spacing for this TextView.  Each line will have its height
2051     * multiplied by <code>mult</code> and have <code>add</code> added to it.
2052     *
2053     * @attr ref android.R.styleable#TextView_lineSpacingExtra
2054     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
2055     */
2056    public void setLineSpacing(float add, float mult) {
2057        mSpacingMult = mult;
2058        mSpacingAdd = add;
2059
2060        if (mLayout != null) {
2061            nullLayouts();
2062            requestLayout();
2063            invalidate();
2064        }
2065    }
2066
2067    /**
2068     * Convenience method: Append the specified text to the TextView's
2069     * display buffer, upgrading it to BufferType.EDITABLE if it was
2070     * not already editable.
2071     */
2072    public final void append(CharSequence text) {
2073        append(text, 0, text.length());
2074    }
2075
2076    /**
2077     * Convenience method: Append the specified text slice to the TextView's
2078     * display buffer, upgrading it to BufferType.EDITABLE if it was
2079     * not already editable.
2080     */
2081    public void append(CharSequence text, int start, int end) {
2082        if (!(mText instanceof Editable)) {
2083            setText(mText, BufferType.EDITABLE);
2084        }
2085
2086        ((Editable) mText).append(text, start, end);
2087    }
2088
2089    private void updateTextColors() {
2090        boolean inval = false;
2091        int color = mTextColor.getColorForState(getDrawableState(), 0);
2092        if (color != mCurTextColor) {
2093            mCurTextColor = color;
2094            inval = true;
2095        }
2096        if (mLinkTextColor != null) {
2097            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
2098            if (color != mTextPaint.linkColor) {
2099                mTextPaint.linkColor = color;
2100                inval = true;
2101            }
2102        }
2103        if (mHintTextColor != null) {
2104            color = mHintTextColor.getColorForState(getDrawableState(), 0);
2105            if (color != mCurHintTextColor && mText.length() == 0) {
2106                mCurHintTextColor = color;
2107                inval = true;
2108            }
2109        }
2110        if (inval) {
2111            invalidate();
2112        }
2113    }
2114
2115    @Override
2116    protected void drawableStateChanged() {
2117        super.drawableStateChanged();
2118        if (mTextColor != null && mTextColor.isStateful()
2119                || (mHintTextColor != null && mHintTextColor.isStateful())
2120                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
2121            updateTextColors();
2122        }
2123
2124        final Drawables dr = mDrawables;
2125        if (dr != null) {
2126            int[] state = getDrawableState();
2127            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
2128                dr.mDrawableTop.setState(state);
2129            }
2130            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
2131                dr.mDrawableBottom.setState(state);
2132            }
2133            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
2134                dr.mDrawableLeft.setState(state);
2135            }
2136            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
2137                dr.mDrawableRight.setState(state);
2138            }
2139        }
2140    }
2141
2142    /**
2143     * User interface state that is stored by TextView for implementing
2144     * {@link View#onSaveInstanceState}.
2145     */
2146    public static class SavedState extends BaseSavedState {
2147        int selStart;
2148        int selEnd;
2149        CharSequence text;
2150        boolean frozenWithFocus;
2151
2152        SavedState(Parcelable superState) {
2153            super(superState);
2154        }
2155
2156        @Override
2157        public void writeToParcel(Parcel out, int flags) {
2158            super.writeToParcel(out, flags);
2159            out.writeInt(selStart);
2160            out.writeInt(selEnd);
2161            out.writeInt(frozenWithFocus ? 1 : 0);
2162            TextUtils.writeToParcel(text, out, flags);
2163        }
2164
2165        @Override
2166        public String toString() {
2167            String str = "TextView.SavedState{"
2168                    + Integer.toHexString(System.identityHashCode(this))
2169                    + " start=" + selStart + " end=" + selEnd;
2170            if (text != null) {
2171                str += " text=" + text;
2172            }
2173            return str + "}";
2174        }
2175
2176        public static final Parcelable.Creator<SavedState> CREATOR
2177                = new Parcelable.Creator<SavedState>() {
2178            public SavedState createFromParcel(Parcel in) {
2179                return new SavedState(in);
2180            }
2181
2182            public SavedState[] newArray(int size) {
2183                return new SavedState[size];
2184            }
2185        };
2186
2187        private SavedState(Parcel in) {
2188            super(in);
2189            selStart = in.readInt();
2190            selEnd = in.readInt();
2191            frozenWithFocus = (in.readInt() != 0);
2192            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2193        }
2194    }
2195
2196    @Override
2197    public Parcelable onSaveInstanceState() {
2198        Parcelable superState = super.onSaveInstanceState();
2199
2200        // Save state if we are forced to
2201        boolean save = mFreezesText;
2202        int start = 0;
2203        int end = 0;
2204
2205        if (mText != null) {
2206            start = Selection.getSelectionStart(mText);
2207            end = Selection.getSelectionEnd(mText);
2208            if (start >= 0 || end >= 0) {
2209                // Or save state if there is a selection
2210                save = true;
2211            }
2212        }
2213
2214        if (save) {
2215            SavedState ss = new SavedState(superState);
2216            // XXX Should also save the current scroll position!
2217            ss.selStart = start;
2218            ss.selEnd = end;
2219
2220            if (mText instanceof Spanned) {
2221                /*
2222                 * Calling setText() strips off any ChangeWatchers;
2223                 * strip them now to avoid leaking references.
2224                 * But do it to a copy so that if there are any
2225                 * further changes to the text of this view, it
2226                 * won't get into an inconsistent state.
2227                 */
2228
2229                Spannable sp = new SpannableString(mText);
2230
2231                for (ChangeWatcher cw :
2232                     sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
2233                    sp.removeSpan(cw);
2234                }
2235
2236                ss.text = sp;
2237            } else {
2238                ss.text = mText.toString();
2239            }
2240
2241            if (isFocused() && start >= 0 && end >= 0) {
2242                ss.frozenWithFocus = true;
2243            }
2244
2245            return ss;
2246        }
2247
2248        return superState;
2249    }
2250
2251    @Override
2252    public void onRestoreInstanceState(Parcelable state) {
2253        if (!(state instanceof SavedState)) {
2254            super.onRestoreInstanceState(state);
2255            return;
2256        }
2257
2258        SavedState ss = (SavedState)state;
2259        super.onRestoreInstanceState(ss.getSuperState());
2260
2261        // XXX restore buffer type too, as well as lots of other stuff
2262        if (ss.text != null) {
2263            setText(ss.text);
2264        }
2265
2266        if (ss.selStart >= 0 && ss.selEnd >= 0) {
2267            if (mText instanceof Spannable) {
2268                int len = mText.length();
2269
2270                if (ss.selStart > len || ss.selEnd > len) {
2271                    String restored = "";
2272
2273                    if (ss.text != null) {
2274                        restored = "(restored) ";
2275                    }
2276
2277                    Log.e("TextView", "Saved cursor position " + ss.selStart +
2278                          "/" + ss.selEnd + " out of range for " + restored +
2279                          "text " + mText);
2280                } else {
2281                    Selection.setSelection((Spannable) mText, ss.selStart,
2282                                           ss.selEnd);
2283
2284                    if (ss.frozenWithFocus) {
2285                        mFrozenWithFocus = true;
2286                    }
2287                }
2288            }
2289        }
2290    }
2291
2292    /**
2293     * Control whether this text view saves its entire text contents when
2294     * freezing to an icicle, in addition to dynamic state such as cursor
2295     * position.  By default this is false, not saving the text.  Set to true
2296     * if the text in the text view is not being saved somewhere else in
2297     * persistent storage (such as in a content provider) so that if the
2298     * view is later thawed the user will not lose their data.
2299     *
2300     * @param freezesText Controls whether a frozen icicle should include the
2301     * entire text data: true to include it, false to not.
2302     *
2303     * @attr ref android.R.styleable#TextView_freezesText
2304     */
2305    public void setFreezesText(boolean freezesText) {
2306        mFreezesText = freezesText;
2307    }
2308
2309    /**
2310     * Return whether this text view is including its entire text contents
2311     * in frozen icicles.
2312     *
2313     * @return Returns true if text is included, false if it isn't.
2314     *
2315     * @see #setFreezesText
2316     */
2317    public boolean getFreezesText() {
2318        return mFreezesText;
2319    }
2320
2321    ///////////////////////////////////////////////////////////////////////////
2322
2323    /**
2324     * Sets the Factory used to create new Editables.
2325     */
2326    public final void setEditableFactory(Editable.Factory factory) {
2327        mEditableFactory = factory;
2328        setText(mText);
2329    }
2330
2331    /**
2332     * Sets the Factory used to create new Spannables.
2333     */
2334    public final void setSpannableFactory(Spannable.Factory factory) {
2335        mSpannableFactory = factory;
2336        setText(mText);
2337    }
2338
2339    /**
2340     * Sets the string value of the TextView. TextView <em>does not</em> accept
2341     * HTML-like formatting, which you can do with text strings in XML resource files.
2342     * To style your strings, attach android.text.style.* objects to a
2343     * {@link android.text.SpannableString SpannableString}, or see
2344     * <a href="{@docRoot}reference/available-resources.html#stringresources">
2345     * String Resources</a> for an example of setting formatted text in the XML resource file.
2346     *
2347     * @attr ref android.R.styleable#TextView_text
2348     */
2349    public final void setText(CharSequence text) {
2350        setText(text, mBufferType);
2351    }
2352
2353    /**
2354     * Like {@link #setText(CharSequence)},
2355     * except that the cursor position (if any) is retained in the new text.
2356     *
2357     * @param text The new text to place in the text view.
2358     *
2359     * @see #setText(CharSequence)
2360     */
2361    public final void setTextKeepState(CharSequence text) {
2362        setTextKeepState(text, mBufferType);
2363    }
2364
2365    /**
2366     * Sets the text that this TextView is to display (see
2367     * {@link #setText(CharSequence)}) and also sets whether it is stored
2368     * in a styleable/spannable buffer and whether it is editable.
2369     *
2370     * @attr ref android.R.styleable#TextView_text
2371     * @attr ref android.R.styleable#TextView_bufferType
2372     */
2373    public void setText(CharSequence text, BufferType type) {
2374        setText(text, type, true, 0);
2375
2376        if (mCharWrapper != null) {
2377            mCharWrapper.mChars = null;
2378        }
2379    }
2380
2381    private void setText(CharSequence text, BufferType type,
2382                         boolean notifyBefore, int oldlen) {
2383        if (text == null) {
2384            text = "";
2385        }
2386
2387        if (text instanceof Spanned &&
2388            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
2389            setHorizontalFadingEdgeEnabled(true);
2390            setEllipsize(TextUtils.TruncateAt.MARQUEE);
2391        }
2392
2393        int n = mFilters.length;
2394        for (int i = 0; i < n; i++) {
2395            CharSequence out = mFilters[i].filter(text, 0, text.length(),
2396                                                  EMPTY_SPANNED, 0, 0);
2397            if (out != null) {
2398                text = out;
2399            }
2400        }
2401
2402        if (notifyBefore) {
2403            if (mText != null) {
2404                oldlen = mText.length();
2405                sendBeforeTextChanged(mText, 0, oldlen, text.length());
2406            } else {
2407                sendBeforeTextChanged("", 0, 0, text.length());
2408            }
2409        }
2410
2411        boolean needEditableForNotification = false;
2412
2413        if (mListeners != null && mListeners.size() != 0) {
2414            needEditableForNotification = true;
2415        }
2416
2417        if (type == BufferType.EDITABLE || mInput != null ||
2418            needEditableForNotification) {
2419            Editable t = mEditableFactory.newEditable(text);
2420            text = t;
2421            setFilters(t, mFilters);
2422            InputMethodManager imm = InputMethodManager.peekInstance();
2423            if (imm != null) imm.restartInput(this);
2424        } else if (type == BufferType.SPANNABLE || mMovement != null) {
2425            text = mSpannableFactory.newSpannable(text);
2426        } else if (!(text instanceof CharWrapper)) {
2427            text = TextUtils.stringOrSpannedString(text);
2428        }
2429
2430        if (mAutoLinkMask != 0) {
2431            Spannable s2;
2432
2433            if (type == BufferType.EDITABLE || text instanceof Spannable) {
2434                s2 = (Spannable) text;
2435            } else {
2436                s2 = mSpannableFactory.newSpannable(text);
2437            }
2438
2439            if (Linkify.addLinks(s2, mAutoLinkMask)) {
2440                text = s2;
2441                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
2442
2443                /*
2444                 * We must go ahead and set the text before changing the
2445                 * movement method, because setMovementMethod() may call
2446                 * setText() again to try to upgrade the buffer type.
2447                 */
2448                mText = text;
2449
2450                if (mLinksClickable) {
2451                    setMovementMethod(LinkMovementMethod.getInstance());
2452                }
2453            }
2454        }
2455
2456        mBufferType = type;
2457        mText = text;
2458
2459        if (mTransformation == null)
2460            mTransformed = text;
2461        else
2462            mTransformed = mTransformation.getTransformation(text, this);
2463
2464        final int textLength = text.length();
2465
2466        if (text instanceof Spannable) {
2467            Spannable sp = (Spannable) text;
2468
2469            // Remove any ChangeWatchers that might have come
2470            // from other TextViews.
2471            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
2472            final int count = watchers.length;
2473            for (int i = 0; i < count; i++)
2474                sp.removeSpan(watchers[i]);
2475
2476            if (mChangeWatcher == null)
2477                mChangeWatcher = new ChangeWatcher();
2478
2479            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
2480                       (PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
2481
2482            if (mInput != null) {
2483                sp.setSpan(mInput, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2484            }
2485
2486            if (mTransformation != null) {
2487                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2488
2489            }
2490
2491            if (mMovement != null) {
2492                mMovement.initialize(this, (Spannable) text);
2493
2494                /*
2495                 * Initializing the movement method will have set the
2496                 * selection, so reset mSelectionMoved to keep that from
2497                 * interfering with the normal on-focus selection-setting.
2498                 */
2499                mSelectionMoved = false;
2500            }
2501        }
2502
2503        if (mLayout != null) {
2504            checkForRelayout();
2505        }
2506
2507        sendOnTextChanged(text, 0, oldlen, textLength);
2508        onTextChanged(text, 0, oldlen, textLength);
2509
2510        if (needEditableForNotification) {
2511            sendAfterTextChanged((Editable) text);
2512        }
2513    }
2514
2515    /**
2516     * Sets the TextView to display the specified slice of the specified
2517     * char array.  You must promise that you will not change the contents
2518     * of the array except for right before another call to setText(),
2519     * since the TextView has no way to know that the text
2520     * has changed and that it needs to invalidate and re-layout.
2521     */
2522    public final void setText(char[] text, int start, int len) {
2523        int oldlen = 0;
2524
2525        if (start < 0 || len < 0 || start + len > text.length) {
2526            throw new IndexOutOfBoundsException(start + ", " + len);
2527        }
2528
2529        /*
2530         * We must do the before-notification here ourselves because if
2531         * the old text is a CharWrapper we destroy it before calling
2532         * into the normal path.
2533         */
2534        if (mText != null) {
2535            oldlen = mText.length();
2536            sendBeforeTextChanged(mText, 0, oldlen, len);
2537        } else {
2538            sendBeforeTextChanged("", 0, 0, len);
2539        }
2540
2541        if (mCharWrapper == null) {
2542            mCharWrapper = new CharWrapper(text, start, len);
2543        } else {
2544            mCharWrapper.set(text, start, len);
2545        }
2546
2547        setText(mCharWrapper, mBufferType, false, oldlen);
2548    }
2549
2550    private static class CharWrapper
2551            implements CharSequence, GetChars, GraphicsOperations {
2552        private char[] mChars;
2553        private int mStart, mLength;
2554
2555        public CharWrapper(char[] chars, int start, int len) {
2556            mChars = chars;
2557            mStart = start;
2558            mLength = len;
2559        }
2560
2561        /* package */ void set(char[] chars, int start, int len) {
2562            mChars = chars;
2563            mStart = start;
2564            mLength = len;
2565        }
2566
2567        public int length() {
2568            return mLength;
2569        }
2570
2571        public char charAt(int off) {
2572            return mChars[off + mStart];
2573        }
2574
2575        public String toString() {
2576            return new String(mChars, mStart, mLength);
2577        }
2578
2579        public CharSequence subSequence(int start, int end) {
2580            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2581                throw new IndexOutOfBoundsException(start + ", " + end);
2582            }
2583
2584            return new String(mChars, start + mStart, end - start);
2585        }
2586
2587        public void getChars(int start, int end, char[] buf, int off) {
2588            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2589                throw new IndexOutOfBoundsException(start + ", " + end);
2590            }
2591
2592            System.arraycopy(mChars, start + mStart, buf, off, end - start);
2593        }
2594
2595        public void drawText(Canvas c, int start, int end,
2596                             float x, float y, Paint p) {
2597            c.drawText(mChars, start + mStart, end - start, x, y, p);
2598        }
2599
2600        public float measureText(int start, int end, Paint p) {
2601            return p.measureText(mChars, start + mStart, end - start);
2602        }
2603
2604        public int getTextWidths(int start, int end, float[] widths, Paint p) {
2605            return p.getTextWidths(mChars, start + mStart, end - start, widths);
2606        }
2607    }
2608
2609    /**
2610     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
2611     * except that the cursor position (if any) is retained in the new text.
2612     *
2613     * @see #setText(CharSequence, android.widget.TextView.BufferType)
2614     */
2615    public final void setTextKeepState(CharSequence text, BufferType type) {
2616        int start = getSelectionStart();
2617        int end = getSelectionEnd();
2618        int len = text.length();
2619
2620        setText(text, type);
2621
2622        if (start >= 0 || end >= 0) {
2623            if (mText instanceof Spannable) {
2624                Selection.setSelection((Spannable) mText,
2625                                       Math.max(0, Math.min(start, len)),
2626                                       Math.max(0, Math.min(end, len)));
2627            }
2628        }
2629    }
2630
2631    public final void setText(int resid) {
2632        setText(getContext().getResources().getText(resid));
2633    }
2634
2635    public final void setText(int resid, BufferType type) {
2636        setText(getContext().getResources().getText(resid), type);
2637    }
2638
2639    /**
2640     * Sets the text to be displayed when the text of the TextView is empty.
2641     * Null means to use the normal empty text. The hint does not currently
2642     * participate in determining the size of the view.
2643     *
2644     * This method is deprecated. Use {link #setHint(int, String)} or
2645     * {link #setHint(CharSequence, String)} instead.
2646     *
2647     * @attr ref android.R.styleable#TextView_hint
2648     */
2649    public final void setHint(CharSequence hint) {
2650        mHint = TextUtils.stringOrSpannedString(hint);
2651
2652        if (mLayout != null) {
2653            checkForRelayout();
2654        }
2655
2656        if (mText.length() == 0)
2657            invalidate();
2658    }
2659
2660    /**
2661     * Sets the text to be displayed when the text of the TextView is empty,
2662     * from a resource.
2663     *
2664     * This method is deprecated. Use {link #setHint(int, String)} or
2665     * {link #setHint(CharSequence, String)} instead.
2666     *
2667     * @attr ref android.R.styleable#TextView_hint
2668     */
2669    public final void setHint(int resid) {
2670        setHint(getContext().getResources().getText(resid));
2671    }
2672
2673    /**
2674     * Returns the hint that is displayed when the text of the TextView
2675     * is empty.
2676     *
2677     * @attr ref android.R.styleable#TextView_hint
2678     */
2679    @ViewDebug.CapturedViewProperty
2680    public CharSequence getHint() {
2681        return mHint;
2682    }
2683
2684    /**
2685     * Set the type of the content with a constant as defined for
2686     * {@link EditorInfo#inputType}.  This will take care of changing
2687     * the key listener, by calling {@link #setKeyListener(KeyListener)}, to
2688     * match the given content type.  If the given content type is
2689     * {@link EditorInfo#TYPE_NULL} then a soft keyboard will
2690     * not be displayed for this text view.
2691     *
2692     * @see #getInputType()
2693     * @see #setRawInputType(int)
2694     * @see android.text.InputType
2695     * @attr ref android.R.styleable#TextView_inputType
2696     */
2697    public void setInputType(int type) {
2698        setInputType(type, false);
2699        if ((type&(EditorInfo.TYPE_MASK_CLASS
2700                |EditorInfo.TYPE_MASK_VARIATION))
2701                == (EditorInfo.TYPE_CLASS_TEXT
2702                        |EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
2703            setTransformationMethod(PasswordTransformationMethod.getInstance());
2704            setTypefaceByIndex(MONOSPACE, 0);
2705        }
2706        boolean multiLine = (type&(EditorInfo.TYPE_MASK_CLASS
2707                        | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
2708                (EditorInfo.TYPE_CLASS_TEXT
2709                        | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
2710        if (mSingleLine == multiLine) {
2711            setSingleLine(!multiLine);
2712        }
2713        InputMethodManager imm = InputMethodManager.peekInstance();
2714        if (imm != null) imm.restartInput(this);
2715    }
2716
2717    /**
2718     * Directly change the content type integer of the text view, without
2719     * modifying any other state.
2720     * @see #setContentType
2721     * @see android.text.InputType
2722     * @attr ref android.R.styleable#TextView_inputType
2723     */
2724    public void setRawInputType(int type) {
2725        mInputType = type;
2726    }
2727
2728    private void setInputType(int type, boolean direct) {
2729        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
2730        KeyListener input;
2731        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
2732            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT)
2733                    != 0;
2734            TextKeyListener.Capitalize cap;
2735            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
2736                cap = TextKeyListener.Capitalize.CHARACTERS;
2737            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
2738                cap = TextKeyListener.Capitalize.WORDS;
2739            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
2740                cap = TextKeyListener.Capitalize.SENTENCES;
2741            } else {
2742                cap = TextKeyListener.Capitalize.NONE;
2743            }
2744            input = TextKeyListener.getInstance(autotext, cap);
2745        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
2746            input = DigitsKeyListener.getInstance(
2747                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
2748                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
2749        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
2750            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
2751                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
2752                    input = DateKeyListener.getInstance();
2753                    break;
2754                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
2755                    input = TimeKeyListener.getInstance();
2756                    break;
2757                default:
2758                    input = DateTimeKeyListener.getInstance();
2759                    break;
2760            }
2761        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
2762            input = DialerKeyListener.getInstance();
2763        } else {
2764            input = TextKeyListener.getInstance();
2765        }
2766        mInputType = type;
2767        if (direct) mInput = input;
2768        else {
2769            setKeyListenerOnly(input);
2770        }
2771    }
2772
2773    /**
2774     * Get the type of the content.
2775     *
2776     * @see #setInputType(int)
2777     * @see android.text.InputType
2778     */
2779    public int getInputType() {
2780        return mInputType;
2781    }
2782
2783    /**
2784     * Set the private content type of the text, which is the
2785     * {@link EditorInfo#privateContentType TextBoxAttribute.privateContentType}
2786     * field that will be filled in when creating an input connection.
2787     *
2788     * @see #getPrivateContentType()
2789     * @see EditorInfo#privateContentType
2790     * @attr ref android.R.styleable#TextView_editorPrivateContentType
2791     */
2792    public void setPrivateContentType(String type) {
2793        if (mInputContentType == null) mInputContentType = new InputContentType();
2794        mInputContentType.privateContentType = type;
2795    }
2796
2797    /**
2798     * Get the private type of the content.
2799     *
2800     * @see #setPrivateContentType(String)
2801     * @see EditorInfo#privateContentType
2802     */
2803    public String getPrivateContentType() {
2804        return mInputContentType != null
2805                ? mInputContentType.privateContentType : null;
2806    }
2807
2808    /**
2809     * Set the extra input data of the text, which is the
2810     * {@link EditorInfo#extras TextBoxAttribute.extras}
2811     * Bundle that will be filled in when creating an input connection.  The
2812     * given integer is the resource ID of an XML resource holding an
2813     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
2814     *
2815     * @see #getInputExtras()
2816     * @see EditorInfo#extras
2817     * @attr ref android.R.styleable#TextView_editorExtras
2818     */
2819    public void setInputExtras(int xmlResId)
2820            throws XmlPullParserException, IOException {
2821        XmlResourceParser parser = getResources().getXml(xmlResId);
2822        if (mInputContentType == null) mInputContentType = new InputContentType();
2823        mInputContentType.extras = new Bundle();
2824        getResources().parseBundleExtras(parser, mInputContentType.extras);
2825    }
2826
2827    /**
2828     * Retrieve the input extras currently associated with the text view, which
2829     * can be viewed as well as modified.
2830     *
2831     * @param create If true, the extras will be created if they don't already
2832     * exist.  Otherwise, null will be returned if none have been created.
2833     * @see #setInputExtras(int)
2834     * @see EditorInfo#extras
2835     * @attr ref android.R.styleable#TextView_editorExtras
2836     */
2837    public Bundle getInputExtras(boolean create) {
2838        if (mInputContentType == null) {
2839            if (!create) return null;
2840            mInputContentType = new InputContentType();
2841        }
2842        if (mInputContentType.extras == null) {
2843            if (!create) return null;
2844            mInputContentType.extras = new Bundle();
2845        }
2846        return mInputContentType.extras;
2847    }
2848
2849    /**
2850     * Returns the error message that was set to be displayed with
2851     * {@link #setError}, or <code>null</code> if no error was set
2852     * or if it the error was cleared by the widget after user input.
2853     */
2854    public CharSequence getError() {
2855        return mError;
2856    }
2857
2858    /**
2859     * Sets the right-hand compound drawable of the TextView to the "error"
2860     * icon and sets an error message that will be displayed in a popup when
2861     * the TextView has focus.  The icon and error message will be reset to
2862     * null when any key events cause changes to the TextView's text.  If the
2863     * <code>error</code> is <code>null</code>, the error message and icon
2864     * will be cleared.
2865     */
2866    public void setError(CharSequence error) {
2867        if (error == null) {
2868            setError(null, null);
2869        } else {
2870            Drawable dr = getContext().getResources().
2871                getDrawable(com.android.internal.R.drawable.
2872                            indicator_input_error);
2873
2874            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
2875            setError(error, dr);
2876        }
2877    }
2878
2879    /**
2880     * Sets the right-hand compound drawable of the TextView to the specified
2881     * icon and sets an error message that will be displayed in a popup when
2882     * the TextView has focus.  The icon and error message will be reset to
2883     * null when any key events cause changes to the TextView's text.  The
2884     * drawable must already have had {@link Drawable#setBounds} set on it.
2885     * If the <code>error</code> is <code>null</code>, the error message will
2886     * be cleared (and you should provide a <code>null</code> icon as well).
2887     */
2888    public void setError(CharSequence error, Drawable icon) {
2889        error = TextUtils.stringOrSpannedString(error);
2890
2891        mError = error;
2892        mErrorWasChanged = true;
2893        final Drawables dr = mDrawables;
2894        if (dr != null) {
2895            setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop,
2896                                 icon, dr.mDrawableBottom);
2897        } else {
2898            setCompoundDrawables(null, null, icon, null);
2899        }
2900
2901        if (error == null) {
2902            if (mPopup != null) {
2903                if (mPopup.isShowing()) {
2904                    mPopup.dismiss();
2905                }
2906
2907                mPopup = null;
2908            }
2909        } else {
2910            if (isFocused()) {
2911                showError();
2912            }
2913        }
2914    }
2915
2916    private void showError() {
2917        if (mPopup == null) {
2918            LayoutInflater inflater = LayoutInflater.from(getContext());
2919            TextView err = (TextView) inflater.inflate(com.android.internal.R.layout.textview_hint,
2920                    null);
2921
2922            mPopup = new PopupWindow(err, 200, 50);
2923            mPopup.setFocusable(false);
2924        }
2925
2926        TextView tv = (TextView) mPopup.getContentView();
2927        chooseSize(mPopup, mError, tv);
2928        tv.setText(mError);
2929
2930        mPopup.showAsDropDown(this, getErrorX(), getErrorY());
2931    }
2932
2933    /**
2934     * Returns the Y offset to make the pointy top of the error point
2935     * at the middle of the error icon.
2936     */
2937    private int getErrorX() {
2938        /*
2939         * The "25" is the distance between the point and the right edge
2940         * of the background
2941         */
2942
2943        final Drawables dr = mDrawables;
2944        return getWidth() - mPopup.getWidth()
2945                - getPaddingRight()
2946                - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + 25;
2947    }
2948
2949    /**
2950     * Returns the Y offset to make the pointy top of the error point
2951     * at the bottom of the error icon.
2952     */
2953    private int getErrorY() {
2954        /*
2955         * Compound, not extended, because the icon is not clipped
2956         * if the text height is smaller.
2957         */
2958        int vspace = mBottom - mTop -
2959                     getCompoundPaddingBottom() - getCompoundPaddingTop();
2960
2961        final Drawables dr = mDrawables;
2962        int icontop = getCompoundPaddingTop()
2963                + (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2;
2964
2965        /*
2966         * The "2" is the distance between the point and the top edge
2967         * of the background.
2968         */
2969
2970        return icontop + (dr != null ? dr.mDrawableHeightRight : 0)
2971                - getHeight() - 2;
2972    }
2973
2974    private void hideError() {
2975        if (mPopup != null) {
2976            if (mPopup.isShowing()) {
2977                mPopup.dismiss();
2978            }
2979        }
2980    }
2981
2982    private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) {
2983        int wid = tv.getPaddingLeft() + tv.getPaddingRight();
2984        int ht = tv.getPaddingTop() + tv.getPaddingBottom();
2985
2986        /*
2987         * Figure out how big the text would be if we laid it out to the
2988         * full width of this view minus the border.
2989         */
2990        int cap = getWidth() - wid;
2991        if (cap < 0) {
2992            cap = 200; // We must not be measured yet -- setFrame() will fix it.
2993        }
2994
2995        Layout l = new StaticLayout(text, tv.getPaint(), cap,
2996                                    Layout.Alignment.ALIGN_NORMAL, 1, 0, true);
2997        float max = 0;
2998        for (int i = 0; i < l.getLineCount(); i++) {
2999            max = Math.max(max, l.getLineWidth(i));
3000        }
3001
3002        /*
3003         * Now set the popup size to be big enough for the text plus the border.
3004         */
3005        pop.setWidth(wid + (int) Math.ceil(max));
3006        pop.setHeight(ht + l.getHeight());
3007    }
3008
3009
3010    @Override
3011    protected boolean setFrame(int l, int t, int r, int b) {
3012        boolean result = super.setFrame(l, t, r, b);
3013
3014        if (mPopup != null) {
3015            TextView tv = (TextView) mPopup.getContentView();
3016            chooseSize(mPopup, mError, tv);
3017            mPopup.update(this, getErrorX(), getErrorY(), -1, -1);
3018        }
3019
3020        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3021            mRestartMarquee = false;
3022            startMarquee();
3023        }
3024
3025        return result;
3026    }
3027
3028    /**
3029     * Sets the list of input filters that will be used if the buffer is
3030     * Editable.  Has no effect otherwise.
3031     *
3032     * @attr ref android.R.styleable#TextView_maxLength
3033     */
3034    public void setFilters(InputFilter[] filters) {
3035        if (filters == null) {
3036            throw new IllegalArgumentException();
3037        }
3038
3039        mFilters = filters;
3040
3041        if (mText instanceof Editable) {
3042            setFilters((Editable) mText, filters);
3043        }
3044    }
3045
3046    /**
3047     * Sets the list of input filters on the specified Editable,
3048     * and includes mInput in the list if it is an InputFilter.
3049     */
3050    private void setFilters(Editable e, InputFilter[] filters) {
3051        if (mInput instanceof InputFilter) {
3052            InputFilter[] nf = new InputFilter[filters.length + 1];
3053
3054            System.arraycopy(filters, 0, nf, 0, filters.length);
3055            nf[filters.length] = (InputFilter) mInput;
3056
3057            e.setFilters(nf);
3058        } else {
3059            e.setFilters(filters);
3060        }
3061    }
3062
3063    /**
3064     * Returns the current list of input filters.
3065     */
3066    public InputFilter[] getFilters() {
3067        return mFilters;
3068    }
3069
3070    /////////////////////////////////////////////////////////////////////////
3071
3072    private int getVerticalOffset(boolean forceNormal) {
3073        int voffset = 0;
3074        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3075
3076        Layout l = mLayout;
3077        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3078            l = mHintLayout;
3079        }
3080
3081        if (gravity != Gravity.TOP) {
3082            int boxht;
3083
3084            if (l == mHintLayout) {
3085                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3086                        getCompoundPaddingBottom();
3087            } else {
3088                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3089                        getExtendedPaddingBottom();
3090            }
3091            int textht = l.getHeight();
3092
3093            if (textht < boxht) {
3094                if (gravity == Gravity.BOTTOM)
3095                    voffset = boxht - textht;
3096                else // (gravity == Gravity.CENTER_VERTICAL)
3097                    voffset = (boxht - textht) >> 1;
3098            }
3099        }
3100        return voffset;
3101    }
3102
3103    private int getBottomVerticalOffset(boolean forceNormal) {
3104        int voffset = 0;
3105        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3106
3107        Layout l = mLayout;
3108        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3109            l = mHintLayout;
3110        }
3111
3112        if (gravity != Gravity.BOTTOM) {
3113            int boxht;
3114
3115            if (l == mHintLayout) {
3116                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3117                        getCompoundPaddingBottom();
3118            } else {
3119                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3120                        getExtendedPaddingBottom();
3121            }
3122            int textht = l.getHeight();
3123
3124            if (textht < boxht) {
3125                if (gravity == Gravity.TOP)
3126                    voffset = boxht - textht;
3127                else // (gravity == Gravity.CENTER_VERTICAL)
3128                    voffset = (boxht - textht) >> 1;
3129            }
3130        }
3131        return voffset;
3132    }
3133
3134    private void invalidateCursorPath() {
3135        if (mHighlightPathBogus) {
3136            invalidateCursor();
3137        } else {
3138            synchronized (sTempRect) {
3139                /*
3140                 * The reason for this concern about the thickness of the
3141                 * cursor and doing the floor/ceil on the coordinates is that
3142                 * some EditTexts (notably textfields in the Browser) have
3143                 * anti-aliased text where not all the characters are
3144                 * necessarily at integer-multiple locations.  This should
3145                 * make sure the entire cursor gets invalidated instead of
3146                 * sometimes missing half a pixel.
3147                 */
3148
3149                float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
3150                if (thick < 1.0f) {
3151                    thick = 1.0f;
3152                }
3153
3154                thick /= 2;
3155
3156                mHighlightPath.computeBounds(sTempRect, false);
3157
3158                int left = getCompoundPaddingLeft();
3159                int top = getExtendedPaddingTop() + getVerticalOffset(true);
3160
3161                invalidate((int) FloatMath.floor(left + sTempRect.left - thick),
3162                           (int) FloatMath.floor(top + sTempRect.top - thick),
3163                           (int) FloatMath.ceil(left + sTempRect.right + thick),
3164                           (int) FloatMath.ceil(top + sTempRect.bottom + thick));
3165            }
3166        }
3167    }
3168
3169    private void invalidateCursor() {
3170        int where = Selection.getSelectionEnd(mText);
3171
3172        invalidateCursor(where, where, where);
3173    }
3174
3175    private void invalidateCursor(int a, int b, int c) {
3176        if (mLayout == null) {
3177            invalidate();
3178        } else {
3179            if (a >= 0 || b >= 0 || c >= 0) {
3180                int first = Math.min(Math.min(a, b), c);
3181                int last = Math.max(Math.max(a, b), c);
3182
3183                int line = mLayout.getLineForOffset(first);
3184                int top = mLayout.getLineTop(line);
3185
3186                // This is ridiculous, but the descent from the line above
3187                // can hang down into the line we really want to redraw,
3188                // so we have to invalidate part of the line above to make
3189                // sure everything that needs to be redrawn really is.
3190                // (But not the whole line above, because that would cause
3191                // the same problem with the descenders on the line above it!)
3192                if (line > 0) {
3193                    top -= mLayout.getLineDescent(line - 1);
3194                }
3195
3196                int line2;
3197
3198                if (first == last)
3199                    line2 = line;
3200                else
3201                    line2 = mLayout.getLineForOffset(last);
3202
3203                int bottom = mLayout.getLineTop(line2 + 1);
3204                int voffset = getVerticalOffset(true);
3205
3206                int left = getCompoundPaddingLeft() + mScrollX;
3207                invalidate(left, top + voffset + getExtendedPaddingTop(),
3208                           left + getWidth() - getCompoundPaddingLeft() -
3209                           getCompoundPaddingRight(),
3210                           bottom + voffset + getExtendedPaddingTop());
3211            }
3212        }
3213    }
3214
3215    private void registerForPreDraw() {
3216        final ViewTreeObserver observer = getViewTreeObserver();
3217        if (observer == null) {
3218            return;
3219        }
3220
3221        if (mPreDrawState == PREDRAW_NOT_REGISTERED) {
3222            observer.addOnPreDrawListener(this);
3223            mPreDrawState = PREDRAW_PENDING;
3224        } else if (mPreDrawState == PREDRAW_DONE) {
3225            mPreDrawState = PREDRAW_PENDING;
3226        }
3227
3228        // else state is PREDRAW_PENDING, so keep waiting.
3229    }
3230
3231    /**
3232     * {@inheritDoc}
3233     */
3234    public boolean onPreDraw() {
3235        if (mPreDrawState != PREDRAW_PENDING) {
3236            return true;
3237        }
3238
3239        if (mLayout == null) {
3240            assumeLayout();
3241        }
3242
3243        boolean changed = false;
3244
3245        if (mMovement != null) {
3246            int curs = Selection.getSelectionEnd(mText);
3247
3248            /*
3249             * TODO: This should really only keep the end in view if
3250             * it already was before the text changed.  I'm not sure
3251             * of a good way to tell from here if it was.
3252             */
3253            if (curs < 0 &&
3254                  (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
3255                curs = mText.length();
3256            }
3257
3258            if (curs >= 0) {
3259                changed = bringPointIntoView(curs);
3260            }
3261        } else {
3262            changed = bringTextIntoView();
3263        }
3264
3265        mPreDrawState = PREDRAW_DONE;
3266        return !changed;
3267    }
3268
3269    @Override
3270    protected void onDetachedFromWindow() {
3271        super.onDetachedFromWindow();
3272
3273        if (mPreDrawState != PREDRAW_NOT_REGISTERED) {
3274            final ViewTreeObserver observer = getViewTreeObserver();
3275            if (observer != null) {
3276                observer.removeOnPreDrawListener(this);
3277                mPreDrawState = PREDRAW_NOT_REGISTERED;
3278            }
3279        }
3280
3281        if (mError != null) {
3282            hideError();
3283        }
3284    }
3285
3286    @Override
3287    protected boolean isPaddingOffsetRequired() {
3288        return mShadowRadius != 0;
3289    }
3290
3291    @Override
3292    protected int getLeftPaddingOffset() {
3293        return (int) Math.min(0, mShadowDx - mShadowRadius);
3294    }
3295
3296    @Override
3297    protected int getTopPaddingOffset() {
3298        return (int) Math.min(0, mShadowDy - mShadowRadius);
3299    }
3300
3301    @Override
3302    protected int getBottomPaddingOffset() {
3303        return (int) Math.max(0, mShadowDy + mShadowRadius);
3304    }
3305
3306    @Override
3307    protected int getRightPaddingOffset() {
3308        return (int) Math.max(0, mShadowDx + mShadowRadius);
3309    }
3310
3311    @Override
3312    protected void onDraw(Canvas canvas) {
3313        // Draw the background for this view
3314        super.onDraw(canvas);
3315
3316        final int compoundPaddingLeft = getCompoundPaddingLeft();
3317        final int compoundPaddingTop = getCompoundPaddingTop();
3318        final int compoundPaddingRight = getCompoundPaddingRight();
3319        final int compoundPaddingBottom = getCompoundPaddingBottom();
3320        final int scrollX = mScrollX;
3321        final int scrollY = mScrollY;
3322        final int right = mRight;
3323        final int left = mLeft;
3324        final int bottom = mBottom;
3325        final int top = mTop;
3326
3327        final Drawables dr = mDrawables;
3328        if (dr != null) {
3329            /*
3330             * Compound, not extended, because the icon is not clipped
3331             * if the text height is smaller.
3332             */
3333
3334            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
3335            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
3336
3337            if (dr.mDrawableLeft != null) {
3338                canvas.save();
3339                canvas.translate(scrollX + mPaddingLeft,
3340                                 scrollY + compoundPaddingTop +
3341                                 (vspace - dr.mDrawableHeightLeft) / 2);
3342                dr.mDrawableLeft.draw(canvas);
3343                canvas.restore();
3344            }
3345
3346            if (dr.mDrawableRight != null) {
3347                canvas.save();
3348                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
3349                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
3350                dr.mDrawableRight.draw(canvas);
3351                canvas.restore();
3352            }
3353
3354            if (dr.mDrawableTop != null) {
3355                canvas.save();
3356                canvas.translate(scrollX + compoundPaddingLeft + (hspace - dr.mDrawableWidthTop) / 2,
3357                        scrollY + mPaddingTop);
3358                dr.mDrawableTop.draw(canvas);
3359                canvas.restore();
3360            }
3361
3362            if (dr.mDrawableBottom != null) {
3363                canvas.save();
3364                canvas.translate(scrollX + compoundPaddingLeft +
3365                        (hspace - dr.mDrawableWidthBottom) / 2,
3366                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
3367                dr.mDrawableBottom.draw(canvas);
3368                canvas.restore();
3369            }
3370        }
3371
3372        if (mPreDrawState == PREDRAW_DONE) {
3373            final ViewTreeObserver observer = getViewTreeObserver();
3374            if (observer != null) {
3375                observer.removeOnPreDrawListener(this);
3376                mPreDrawState = PREDRAW_NOT_REGISTERED;
3377            }
3378        }
3379
3380        int color = mCurTextColor;
3381
3382        if (mLayout == null) {
3383            assumeLayout();
3384        }
3385
3386        Layout layout = mLayout;
3387        int cursorcolor = color;
3388
3389        if (mHint != null && mText.length() == 0) {
3390            if (mHintTextColor != null) {
3391                color = mCurHintTextColor;
3392            }
3393
3394            layout = mHintLayout;
3395        }
3396
3397        mTextPaint.setColor(color);
3398        mTextPaint.drawableState = getDrawableState();
3399
3400        canvas.save();
3401        /*  Would be faster if we didn't have to do this. Can we chop the
3402            (displayable) text so that we don't need to do this ever?
3403        */
3404
3405        int extendedPaddingTop = getExtendedPaddingTop();
3406        int extendedPaddingBottom = getExtendedPaddingBottom();
3407
3408        float clipLeft = compoundPaddingLeft + scrollX;
3409        float clipTop = extendedPaddingTop + scrollY;
3410        float clipRight = right - left - compoundPaddingRight + scrollX;
3411        float clipBottom = bottom - top - extendedPaddingBottom + scrollY;
3412
3413        if (mShadowRadius != 0) {
3414            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
3415            clipRight += Math.max(0, mShadowDx + mShadowRadius);
3416
3417            clipTop += Math.min(0, mShadowDy - mShadowRadius);
3418            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
3419        }
3420
3421        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
3422
3423        int voffsetText = 0;
3424        int voffsetCursor = 0;
3425
3426        // translate in by our padding
3427        {
3428            /* shortcircuit calling getVerticaOffset() */
3429            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
3430                voffsetText = getVerticalOffset(false);
3431                voffsetCursor = getVerticalOffset(true);
3432            }
3433            canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
3434        }
3435
3436        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3437            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
3438                    (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
3439                canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft -
3440                        getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f);
3441            }
3442
3443            if (mMarquee != null && mMarquee.isRunning()) {
3444                canvas.translate(-mMarquee.mScroll, 0.0f);
3445            }
3446        }
3447
3448        Path highlight = null;
3449        int selStart = -1, selEnd = -1;
3450
3451        //  If there is no movement method, then there can be no selection.
3452        //  Check that first and attempt to skip everything having to do with
3453        //  the cursor.
3454        //  XXX This is not strictly true -- a program could set the
3455        //  selection manually if it really wanted to.
3456        if (mMovement != null && (isFocused() || isPressed())) {
3457            selStart = Selection.getSelectionStart(mText);
3458            selEnd = Selection.getSelectionEnd(mText);
3459
3460            if (mCursorVisible && selStart >= 0 && isEnabled()) {
3461                if (mHighlightPath == null)
3462                    mHighlightPath = new Path();
3463
3464                if (selStart == selEnd) {
3465                    if ((SystemClock.uptimeMillis() - mShowCursor) % (2 * BLINK)
3466                        < BLINK) {
3467                        if (mHighlightPathBogus) {
3468                            mHighlightPath.reset();
3469                            mLayout.getCursorPath(selStart, mHighlightPath, mText);
3470                            mHighlightPathBogus = false;
3471                        }
3472
3473                        // XXX should pass to skin instead of drawing directly
3474                        mHighlightPaint.setColor(cursorcolor);
3475                        mHighlightPaint.setStyle(Paint.Style.STROKE);
3476
3477                        highlight = mHighlightPath;
3478                    }
3479                } else {
3480                    if (mHighlightPathBogus) {
3481                        mHighlightPath.reset();
3482                        mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
3483                        mHighlightPathBogus = false;
3484                    }
3485
3486                    // XXX should pass to skin instead of drawing directly
3487                    mHighlightPaint.setColor(mHighlightColor);
3488                    mHighlightPaint.setStyle(Paint.Style.FILL);
3489
3490                    highlight = mHighlightPath;
3491                }
3492            }
3493        }
3494
3495        /*  Comment out until we decide what to do about animations
3496        boolean isLinearTextOn = false;
3497        if (currentTransformation != null) {
3498            isLinearTextOn = mTextPaint.isLinearTextOn();
3499            Matrix m = currentTransformation.getMatrix();
3500            if (!m.isIdentity()) {
3501                // mTextPaint.setLinearTextOn(true);
3502            }
3503        }
3504        */
3505
3506        InputMethodManager imm = InputMethodManager.peekInstance();
3507        if (highlight != null && mInputMethodState != null && imm != null) {
3508            imm.updateSelection(this, selStart, selEnd);
3509
3510            if (imm.isWatchingCursor(this)) {
3511                final InputMethodState ims = mInputMethodState;
3512                highlight.computeBounds(ims.mTmpRectF, true);
3513                ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0;
3514
3515                canvas.getMatrix().mapPoints(ims.mTmpOffset);
3516                ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]);
3517
3518                ims.mTmpRectF.offset(0, voffsetCursor - voffsetText);
3519
3520                ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5),
3521                        (int)(ims.mTmpRectF.top + 0.5),
3522                        (int)(ims.mTmpRectF.right + 0.5),
3523                        (int)(ims.mTmpRectF.bottom + 0.5));
3524
3525                imm.updateCursor(this,
3526                        ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top,
3527                        ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom);
3528            }
3529        }
3530
3531        layout.draw(canvas, highlight, mHighlightPaint, voffsetCursor - voffsetText);
3532
3533        /*  Comment out until we decide what to do about animations
3534        if (currentTransformation != null) {
3535            mTextPaint.setLinearTextOn(isLinearTextOn);
3536        }
3537        */
3538
3539        canvas.restore();
3540    }
3541
3542    @Override
3543    public void getFocusedRect(Rect r) {
3544        if (mLayout == null) {
3545            super.getFocusedRect(r);
3546            return;
3547        }
3548
3549        int sel = getSelectionEnd();
3550        if (sel < 0) {
3551            super.getFocusedRect(r);
3552            return;
3553        }
3554
3555        int line = mLayout.getLineForOffset(sel);
3556        r.top = mLayout.getLineTop(line);
3557        r.bottom = mLayout.getLineBottom(line);
3558
3559        r.left = (int) mLayout.getPrimaryHorizontal(sel);
3560        r.right = r.left + 1;
3561
3562        // Adjust for padding and gravity.
3563        int paddingLeft = getCompoundPaddingLeft();
3564        int paddingTop = getExtendedPaddingTop();
3565        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
3566            paddingTop += getVerticalOffset(false);
3567        }
3568        r.offset(paddingLeft, paddingTop);
3569    }
3570
3571    /**
3572     * Return the number of lines of text, or 0 if the internal Layout has not
3573     * been built.
3574     */
3575    public int getLineCount() {
3576        return mLayout != null ? mLayout.getLineCount() : 0;
3577    }
3578
3579    /**
3580     * Return the baseline for the specified line (0...getLineCount() - 1)
3581     * If bounds is not null, return the top, left, right, bottom extents
3582     * of the specified line in it. If the internal Layout has not been built,
3583     * return 0 and set bounds to (0, 0, 0, 0)
3584     * @param line which line to examine (0..getLineCount() - 1)
3585     * @param bounds Optional. If not null, it returns the extent of the line
3586     * @return the Y-coordinate of the baseline
3587     */
3588    public int getLineBounds(int line, Rect bounds) {
3589        if (mLayout == null) {
3590            if (bounds != null) {
3591                bounds.set(0, 0, 0, 0);
3592            }
3593            return 0;
3594        }
3595        else {
3596            int baseline = mLayout.getLineBounds(line, bounds);
3597
3598            int voffset = getExtendedPaddingTop();
3599            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
3600                voffset += getVerticalOffset(true);
3601            }
3602            if (bounds != null) {
3603                bounds.offset(getCompoundPaddingLeft(), voffset);
3604            }
3605            return baseline + voffset;
3606        }
3607    }
3608
3609    @Override
3610    public int getBaseline() {
3611        if (mLayout == null) {
3612            return super.getBaseline();
3613        }
3614
3615        int voffset = 0;
3616        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
3617            voffset = getVerticalOffset(true);
3618        }
3619
3620        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
3621    }
3622
3623    @Override
3624    public boolean onKeyDown(int keyCode, KeyEvent event) {
3625        int which = doKeyDown(keyCode, event);
3626        if (which == 0) {
3627            // Go through default dispatching.
3628            return super.onKeyDown(keyCode, event);
3629        }
3630
3631        return true;
3632    }
3633
3634    @Override
3635    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
3636        KeyEvent down = new KeyEvent(event, KeyEvent.ACTION_DOWN);
3637
3638        int which = doKeyDown(keyCode, down);
3639        if (which == 0) {
3640            // Go through default dispatching.
3641            return super.onKeyMultiple(keyCode, repeatCount, event);
3642        }
3643
3644        // We are going to dispatch the remaining events to either the input
3645        // or movement method.  To do this, we will just send a repeated stream
3646        // of down and up events until we have done the complete repeatCount.
3647        // It would be nice if those interfaces had an onKeyMultiple() method,
3648        // but adding that is a more complicated change.
3649        KeyEvent up = new KeyEvent(event, KeyEvent.ACTION_UP);
3650        if (which == 1) {
3651            mInput.onKeyUp(this, (Editable)mText, keyCode, up);
3652            while (--repeatCount > 0) {
3653                mInput.onKeyDown(this, (Editable)mText, keyCode, down);
3654                mInput.onKeyUp(this, (Editable)mText, keyCode, up);
3655            }
3656            if (mError != null && !mErrorWasChanged) {
3657                setError(null, null);
3658            }
3659
3660        } else if (which == 2) {
3661            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
3662            while (--repeatCount > 0) {
3663                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
3664                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
3665            }
3666        }
3667
3668        return true;
3669    }
3670
3671    private int doKeyDown(int keyCode, KeyEvent event) {
3672        if (!isEnabled()) {
3673            return 0;
3674        }
3675
3676        switch (keyCode) {
3677            case KeyEvent.KEYCODE_DPAD_CENTER:
3678            case KeyEvent.KEYCODE_ENTER:
3679                if (mSingleLine && mInput != null) {
3680                    return 0;
3681                }
3682        }
3683
3684        if (mInput != null) {
3685            /*
3686             * Keep track of what the error was before doing the input
3687             * so that if an input filter changed the error, we leave
3688             * that error showing.  Otherwise, we take down whatever
3689             * error was showing when the user types something.
3690             */
3691            mErrorWasChanged = false;
3692
3693            if (mInput.onKeyDown(this, (Editable) mText, keyCode, event)) {
3694                if (mError != null && !mErrorWasChanged) {
3695                    setError(null, null);
3696                }
3697                return 1;
3698            }
3699        }
3700
3701        // bug 650865: sometimes we get a key event before a layout.
3702        // don't try to move around if we don't know the layout.
3703
3704        if (mMovement != null && mLayout != null)
3705            if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
3706                return 2;
3707
3708        return 0;
3709    }
3710
3711    @Override
3712    public boolean onKeyUp(int keyCode, KeyEvent event) {
3713        if (!isEnabled()) {
3714            return super.onKeyUp(keyCode, event);
3715        }
3716
3717        switch (keyCode) {
3718            case KeyEvent.KEYCODE_DPAD_CENTER:
3719            case KeyEvent.KEYCODE_ENTER:
3720                if (mSingleLine && mInput != null) {
3721                    /*
3722                     * If there is a click listener, just call through to
3723                     * super, which will invoke it.
3724                     *
3725                     * If there isn't a click listener, try to advance focus,
3726                     * but still call through to super, which will reset the
3727                     * pressed state and longpress state.  (It will also
3728                     * call performClick(), but that won't do anything in
3729                     * this case.)
3730                     */
3731                    if (mOnClickListener == null) {
3732                        View v = focusSearch(FOCUS_DOWN);
3733
3734                        if (v != null) {
3735                            if (!v.requestFocus(FOCUS_DOWN)) {
3736                                throw new IllegalStateException("focus search returned a view " +
3737                                        "that wasn't able to take focus!");
3738                            }
3739
3740                            /*
3741                             * Return true because we handled the key; super
3742                             * will return false because there was no click
3743                             * listener.
3744                             */
3745                            super.onKeyUp(keyCode, event);
3746                            return true;
3747                        }
3748                    }
3749
3750                    return super.onKeyUp(keyCode, event);
3751                }
3752        }
3753
3754        if (mInput != null)
3755            if (mInput.onKeyUp(this, (Editable) mText, keyCode, event))
3756                return true;
3757
3758        if (mMovement != null && mLayout != null)
3759            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
3760                return true;
3761
3762        return super.onKeyUp(keyCode, event);
3763    }
3764
3765    @Override public InputConnection createInputConnection(EditorInfo outAttrs) {
3766        if (mInputType != EditorInfo.TYPE_NULL) {
3767            if (mInputMethodState == null) {
3768                mInputMethodState = new InputMethodState();
3769            }
3770            outAttrs.inputType = mInputType;
3771            outAttrs.hintText = mHint;
3772            if (mInputContentType != null) {
3773                outAttrs.privateContentType = mInputContentType.privateContentType;
3774                outAttrs.extras = mInputContentType.extras;
3775            }
3776            if (mText instanceof Editable) {
3777                InputConnection ic = new EditableInputConnection(this);
3778                outAttrs.initialSelStart = Selection.getSelectionStart(mText);
3779                outAttrs.initialSelEnd = Selection.getSelectionEnd(mText);
3780                outAttrs.initialCapsMode = ic.getCursorCapsMode(mInputType);
3781                return ic;
3782            }
3783        }
3784        return null;
3785    }
3786
3787    /**
3788     * If this TextView contains editable content, extract a portion of it
3789     * based on the information in <var>request</var> in to <var>outText</var>.
3790     * @return Returns true if the text is editable and was successfully
3791     * extracted, else false.
3792     */
3793    public boolean extractText(ExtractedTextRequest request,
3794            ExtractedText outText) {
3795        Editable content = getEditableText();
3796        if (content != null) {
3797            outText.text = content.subSequence(0, content.length());
3798            outText.startOffset = 0;
3799            outText.selectionStart = Selection.getSelectionStart(content);
3800            outText.selectionEnd = Selection.getSelectionEnd(content);
3801            return true;
3802        }
3803        return false;
3804    }
3805
3806    void reportExtractedText() {
3807        if (mInputMethodState != null) {
3808            final ExtractedTextRequest req = mInputMethodState.mExtracting;
3809            if (req != null) {
3810                InputMethodManager imm = InputMethodManager.peekInstance();
3811                if (imm != null) {
3812                    if (extractText(req, mInputMethodState.mTmpExtracted)) {
3813                        imm.updateExtractedText(this, req.token,
3814                                mInputMethodState.mTmpExtracted);
3815                    }
3816                }
3817            }
3818        }
3819    }
3820
3821    /**
3822     * Apply to this text view the given extracted text, as previously
3823     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
3824     */
3825    public void setExtractedText(ExtractedText text) {
3826        setText(text.text, TextView.BufferType.EDITABLE);
3827        Selection.setSelection((Spannable)getText(),
3828                text.selectionStart, text.selectionEnd);
3829    }
3830
3831    /**
3832     * @hide
3833     */
3834    public void setExtracting(ExtractedTextRequest req) {
3835        if (mInputMethodState != null) {
3836            mInputMethodState.mExtracting = req;
3837        }
3838    }
3839
3840    /**
3841     * Called by the framework in response to a text completion from
3842     * the current input method, provided by it calling
3843     * {@link InputConnection#commitCompletion
3844     * InputConnection.commitCompletion()}.  The default implementation does
3845     * nothing; text views that are supporting auto-completion should override
3846     * this to do their desired behavior.
3847     *
3848     * @param text The auto complete text the user has selected.
3849     */
3850    public void onCommitCompletion(CompletionInfo text) {
3851    }
3852
3853    /**
3854     * Called by the framework in response to a private command from the
3855     * current method, provided by it calling
3856     * {@link InputConnection#performPrivateCommand
3857     * InputConnection.performPrivateCommand()}.
3858     *
3859     * @param action The action name of the command.
3860     * @param data Any additional data for the command.  This may be null.
3861     * @return Return true if you handled the command, else false.
3862     */
3863    public boolean onPrivateIMECommand(String action, Bundle data) {
3864        return false;
3865    }
3866
3867    private void nullLayouts() {
3868        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
3869            mSavedLayout = (BoringLayout) mLayout;
3870        }
3871        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
3872            mSavedHintLayout = (BoringLayout) mHintLayout;
3873        }
3874
3875        mLayout = mHintLayout = null;
3876    }
3877
3878    /**
3879     * Make a new Layout based on the already-measured size of the view,
3880     * on the assumption that it was measured correctly at some point.
3881     */
3882    private void assumeLayout() {
3883        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
3884
3885        if (width < 1) {
3886            width = 0;
3887        }
3888
3889        int physicalWidth = width;
3890
3891        if (mHorizontallyScrolling) {
3892            width = VERY_WIDE;
3893        }
3894
3895        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
3896                      physicalWidth, false);
3897    }
3898
3899    /**
3900     * The width passed in is now the desired layout width,
3901     * not the full view width with padding.
3902     * {@hide}
3903     */
3904    protected void makeNewLayout(int w, int hintWidth,
3905                                 BoringLayout.Metrics boring,
3906                                 BoringLayout.Metrics hintBoring,
3907                                 int ellipsisWidth, boolean bringIntoView) {
3908        stopMarquee();
3909
3910        mHighlightPathBogus = true;
3911
3912        if (w < 0) {
3913            w = 0;
3914        }
3915        if (hintWidth < 0) {
3916            hintWidth = 0;
3917        }
3918
3919        Layout.Alignment alignment;
3920        switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
3921            case Gravity.CENTER_HORIZONTAL:
3922                alignment = Layout.Alignment.ALIGN_CENTER;
3923                break;
3924
3925            case Gravity.RIGHT:
3926                alignment = Layout.Alignment.ALIGN_OPPOSITE;
3927                break;
3928
3929            default:
3930                alignment = Layout.Alignment.ALIGN_NORMAL;
3931        }
3932
3933        if (mText instanceof Spannable) {
3934            mLayout = new DynamicLayout(mText, mTransformed, mTextPaint, w,
3935                    alignment, mSpacingMult,
3936                    mSpacingAdd, mIncludePad, mEllipsize,
3937                    ellipsisWidth);
3938        } else {
3939            if (boring == UNKNOWN_BORING) {
3940                boring = BoringLayout.isBoring(mTransformed, mTextPaint,
3941                                               mBoring);
3942                if (boring != null) {
3943                    mBoring = boring;
3944                }
3945            }
3946
3947            if (boring != null) {
3948                if (boring.width <= w &&
3949                    (mEllipsize == null || boring.width <= ellipsisWidth)) {
3950                    if (mSavedLayout != null) {
3951                        mLayout = mSavedLayout.
3952                                replaceOrMake(mTransformed, mTextPaint,
3953                                w, alignment, mSpacingMult, mSpacingAdd,
3954                                boring, mIncludePad);
3955                    } else {
3956                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
3957                                w, alignment, mSpacingMult, mSpacingAdd,
3958                                boring, mIncludePad);
3959                    }
3960                    // Log.e("aaa", "Boring: " + mTransformed);
3961
3962                    mSavedLayout = (BoringLayout) mLayout;
3963                } else if (mEllipsize != null && boring.width <= w) {
3964                    if (mSavedLayout != null) {
3965                        mLayout = mSavedLayout.
3966                                replaceOrMake(mTransformed, mTextPaint,
3967                                w, alignment, mSpacingMult, mSpacingAdd,
3968                                boring, mIncludePad, mEllipsize,
3969                                ellipsisWidth);
3970                    } else {
3971                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
3972                                w, alignment, mSpacingMult, mSpacingAdd,
3973                                boring, mIncludePad, mEllipsize,
3974                                ellipsisWidth);
3975                    }
3976                } else if (mEllipsize != null) {
3977                    mLayout = new StaticLayout(mTransformed,
3978                                0, mTransformed.length(),
3979                                mTextPaint, w, alignment, mSpacingMult,
3980                                mSpacingAdd, mIncludePad, mEllipsize,
3981                                ellipsisWidth);
3982                } else {
3983                    mLayout = new StaticLayout(mTransformed, mTextPaint,
3984                            w, alignment, mSpacingMult, mSpacingAdd,
3985                            mIncludePad);
3986                    // Log.e("aaa", "Boring but wide: " + mTransformed);
3987                }
3988            } else if (mEllipsize != null) {
3989                mLayout = new StaticLayout(mTransformed,
3990                            0, mTransformed.length(),
3991                            mTextPaint, w, alignment, mSpacingMult,
3992                            mSpacingAdd, mIncludePad, mEllipsize,
3993                            ellipsisWidth);
3994            } else {
3995                mLayout = new StaticLayout(mTransformed, mTextPaint,
3996                        w, alignment, mSpacingMult, mSpacingAdd,
3997                        mIncludePad);
3998            }
3999        }
4000
4001        mHintLayout = null;
4002
4003        if (mHint != null) {
4004            if (hintBoring == UNKNOWN_BORING) {
4005                hintBoring = BoringLayout.isBoring(mHint, mTextPaint,
4006                                                   mHintBoring);
4007                if (hintBoring != null) {
4008                    mHintBoring = hintBoring;
4009                }
4010            }
4011
4012            if (hintBoring != null) {
4013                if (hintBoring.width <= hintWidth) {
4014                    if (mSavedHintLayout != null) {
4015                        mHintLayout = mSavedHintLayout.
4016                                replaceOrMake(mHint, mTextPaint,
4017                                hintWidth, alignment, mSpacingMult,
4018                                mSpacingAdd, hintBoring, mIncludePad);
4019                    } else {
4020                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
4021                                hintWidth, alignment, mSpacingMult,
4022                                mSpacingAdd, hintBoring, mIncludePad);
4023                    }
4024
4025                    mSavedHintLayout = (BoringLayout) mHintLayout;
4026                } else {
4027                    mHintLayout = new StaticLayout(mHint, mTextPaint,
4028                            hintWidth, alignment, mSpacingMult, mSpacingAdd,
4029                            mIncludePad);
4030                }
4031            } else {
4032                mHintLayout = new StaticLayout(mHint, mTextPaint,
4033                        hintWidth, alignment, mSpacingMult, mSpacingAdd,
4034                        mIncludePad);
4035            }
4036        }
4037
4038        if (bringIntoView) {
4039            registerForPreDraw();
4040        }
4041
4042        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4043            final int height = mLayoutParams.height;
4044            // If the size of the view does not depend on the size of the text, try to
4045            // start the marquee immediately
4046            if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.FILL_PARENT) {
4047                startMarquee();
4048            } else {
4049                // Defer the start of the marquee until we know our width (see setFrame())
4050                mRestartMarquee = true;
4051            }
4052        }
4053    }
4054
4055    private static int desired(Layout layout) {
4056        int n = layout.getLineCount();
4057        CharSequence text = layout.getText();
4058        float max = 0;
4059
4060        // if any line was wrapped, we can't use it.
4061        // but it's ok for the last line not to have a newline
4062
4063        for (int i = 0; i < n - 1; i++) {
4064            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
4065                return -1;
4066        }
4067
4068        for (int i = 0; i < n; i++) {
4069            max = Math.max(max, layout.getLineWidth(i));
4070        }
4071
4072        return (int) FloatMath.ceil(max);
4073    }
4074
4075    /**
4076     * Set whether the TextView includes extra top and bottom padding to make
4077     * room for accents that go above the normal ascent and descent.
4078     * The default is true.
4079     *
4080     * @attr ref android.R.styleable#TextView_includeFontPadding
4081     */
4082    public void setIncludeFontPadding(boolean includepad) {
4083        mIncludePad = includepad;
4084
4085        if (mLayout != null) {
4086            nullLayouts();
4087            requestLayout();
4088            invalidate();
4089        }
4090    }
4091
4092    private static final BoringLayout.Metrics UNKNOWN_BORING =
4093                                                new BoringLayout.Metrics();
4094
4095    @Override
4096    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
4097        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
4098        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
4099        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
4100        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
4101
4102        int width;
4103        int height;
4104
4105        BoringLayout.Metrics boring = UNKNOWN_BORING;
4106        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
4107
4108        int des = -1;
4109        boolean fromexisting = false;
4110
4111        if (widthMode == MeasureSpec.EXACTLY) {
4112            // Parent has told us how big to be. So be it.
4113            width = widthSize;
4114        } else {
4115            if (mLayout != null && mEllipsize == null) {
4116                des = desired(mLayout);
4117            }
4118
4119            if (des < 0) {
4120                boring = BoringLayout.isBoring(mTransformed, mTextPaint,
4121                                               mBoring);
4122                if (boring != null) {
4123                    mBoring = boring;
4124                }
4125            } else {
4126                fromexisting = true;
4127            }
4128
4129            if (boring == null || boring == UNKNOWN_BORING) {
4130                if (des < 0) {
4131                    des = (int) FloatMath.ceil(Layout.
4132                                    getDesiredWidth(mTransformed, mTextPaint));
4133                }
4134
4135                width = des;
4136            } else {
4137                width = boring.width;
4138            }
4139
4140            final Drawables dr = mDrawables;
4141            if (dr != null) {
4142                width = Math.max(width, dr.mDrawableWidthTop);
4143                width = Math.max(width, dr.mDrawableWidthBottom);
4144            }
4145
4146            if (mHint != null) {
4147                int hintDes = -1;
4148                int hintWidth;
4149
4150                if (mHintLayout != null) {
4151                    hintDes = desired(mHintLayout);
4152                }
4153
4154                if (hintDes < 0) {
4155                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint,
4156                                                       mHintBoring);
4157                    if (hintBoring != null) {
4158                        mHintBoring = hintBoring;
4159                    }
4160                }
4161
4162                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
4163                    if (hintDes < 0) {
4164                        hintDes = (int) FloatMath.ceil(Layout.
4165                                        getDesiredWidth(mHint, mTextPaint));
4166                    }
4167
4168                    hintWidth = hintDes;
4169                } else {
4170                    hintWidth = hintBoring.width;
4171                }
4172
4173                if (hintWidth > width) {
4174                    width = hintWidth;
4175                }
4176            }
4177
4178            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
4179
4180            if (mMaxWidthMode == EMS) {
4181                width = Math.min(width, mMaxWidth * getLineHeight());
4182            } else {
4183                width = Math.min(width, mMaxWidth);
4184            }
4185
4186            if (mMinWidthMode == EMS) {
4187                width = Math.max(width, mMinWidth * getLineHeight());
4188            } else {
4189                width = Math.max(width, mMinWidth);
4190            }
4191
4192            // Check against our minimum width
4193            width = Math.max(width, getSuggestedMinimumWidth());
4194
4195            if (widthMode == MeasureSpec.AT_MOST) {
4196                width = Math.min(widthSize, width);
4197            }
4198        }
4199
4200        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
4201        int unpaddedWidth = want;
4202        int hintWant = want;
4203
4204        if (mHorizontallyScrolling)
4205            want = VERY_WIDE;
4206
4207        int hintWidth = mHintLayout == null ? hintWant : mHintLayout.getWidth();
4208
4209        if (mLayout == null) {
4210            makeNewLayout(want, hintWant, boring, hintBoring,
4211                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(),
4212                          false);
4213        } else if ((mLayout.getWidth() != want) || (hintWidth != hintWant) ||
4214                   (mLayout.getEllipsizedWidth() !=
4215                        width - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
4216            if (mHint == null && mEllipsize == null &&
4217                    want > mLayout.getWidth() &&
4218                    (mLayout instanceof BoringLayout ||
4219                        (fromexisting && des >= 0 && des <= want))) {
4220                mLayout.increaseWidthTo(want);
4221            } else {
4222                makeNewLayout(want, hintWant, boring, hintBoring,
4223                              width - getCompoundPaddingLeft() - getCompoundPaddingRight(),
4224                              false);
4225            }
4226        } else {
4227            // Width has not changed.
4228        }
4229
4230        if (heightMode == MeasureSpec.EXACTLY) {
4231            // Parent has told us how big to be. So be it.
4232            height = heightSize;
4233            mDesiredHeightAtMeasure = -1;
4234        } else {
4235            int desired = getDesiredHeight();
4236
4237            height = desired;
4238            mDesiredHeightAtMeasure = desired;
4239
4240            if (heightMode == MeasureSpec.AT_MOST) {
4241                height = Math.min(desired, height);
4242            }
4243        }
4244
4245        int unpaddedHeight = height - getCompoundPaddingTop() -
4246                                getCompoundPaddingBottom();
4247        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
4248            unpaddedHeight = Math.min(unpaddedHeight,
4249                                      mLayout.getLineTop(mMaximum));
4250        }
4251
4252        /*
4253         * We didn't let makeNewLayout() register to bring the cursor into view,
4254         * so do it here if there is any possibility that it is needed.
4255         */
4256        if (mMovement != null ||
4257            mLayout.getWidth() > unpaddedWidth ||
4258            mLayout.getHeight() > unpaddedHeight) {
4259            registerForPreDraw();
4260        } else {
4261            scrollTo(0, 0);
4262        }
4263
4264        setMeasuredDimension(width, height);
4265    }
4266
4267    private int getDesiredHeight() {
4268        return Math.max(getDesiredHeight(mLayout, true),
4269                        getDesiredHeight(mHintLayout, false));
4270    }
4271
4272    private int getDesiredHeight(Layout layout, boolean cap) {
4273        if (layout == null) {
4274            return 0;
4275        }
4276
4277        int linecount = layout.getLineCount();
4278        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
4279        int desired = layout.getLineTop(linecount);
4280
4281        final Drawables dr = mDrawables;
4282        if (dr != null) {
4283            desired = Math.max(desired, dr.mDrawableHeightLeft);
4284            desired = Math.max(desired, dr.mDrawableHeightRight);
4285        }
4286
4287        desired += pad;
4288
4289        if (mMaxMode == LINES) {
4290            /*
4291             * Don't cap the hint to a certain number of lines.
4292             * (Do cap it, though, if we have a maximum pixel height.)
4293             */
4294            if (cap) {
4295                if (linecount > mMaximum) {
4296                    desired = layout.getLineTop(mMaximum) +
4297                              layout.getBottomPadding();
4298
4299                    if (dr != null) {
4300                        desired = Math.max(desired, dr.mDrawableHeightLeft);
4301                        desired = Math.max(desired, dr.mDrawableHeightRight);
4302                    }
4303
4304                    desired += pad;
4305                    linecount = mMaximum;
4306                }
4307            }
4308        } else {
4309            desired = Math.min(desired, mMaximum);
4310        }
4311
4312        if (mMinMode == LINES) {
4313            if (linecount < mMinimum) {
4314                desired += getLineHeight() * (mMinimum - linecount);
4315            }
4316        } else {
4317            desired = Math.max(desired, mMinimum);
4318        }
4319
4320        // Check against our minimum height
4321        desired = Math.max(desired, getSuggestedMinimumHeight());
4322
4323        return desired;
4324    }
4325
4326    /**
4327     * Check whether a change to the existing text layout requires a
4328     * new view layout.
4329     */
4330    private void checkForResize() {
4331        boolean sizeChanged = false;
4332
4333        if (mLayout != null) {
4334            // Check if our width changed
4335            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
4336                sizeChanged = true;
4337                invalidate();
4338            }
4339
4340            // Check if our height changed
4341            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
4342                int desiredHeight = getDesiredHeight();
4343
4344                if (desiredHeight != this.getHeight()) {
4345                    sizeChanged = true;
4346                }
4347            } else if (mLayoutParams.height == LayoutParams.FILL_PARENT) {
4348                if (mDesiredHeightAtMeasure >= 0) {
4349                    int desiredHeight = getDesiredHeight();
4350
4351                    if (desiredHeight != mDesiredHeightAtMeasure) {
4352                        sizeChanged = true;
4353                    }
4354                }
4355            }
4356        }
4357
4358        if (sizeChanged) {
4359            requestLayout();
4360            // caller will have already invalidated
4361        }
4362    }
4363
4364    /**
4365     * Check whether entirely new text requires a new view layout
4366     * or merely a new text layout.
4367     */
4368    private void checkForRelayout() {
4369        // If we have a fixed width, we can just swap in a new text layout
4370        // if the text height stays the same or if the view height is fixed.
4371
4372        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
4373                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
4374                (mHint == null || mHintLayout != null) &&
4375                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
4376            // Static width, so try making a new text layout.
4377
4378            int oldht = mLayout.getHeight();
4379            int want = mLayout.getWidth();
4380            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
4381
4382            /*
4383             * No need to bring the text into view, since the size is not
4384             * changing (unless we do the requestLayout(), in which case it
4385             * will happen at measure).
4386             */
4387            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
4388                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
4389
4390            // In a fixed-height view, so use our new text layout.
4391            if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
4392                mLayoutParams.height != LayoutParams.FILL_PARENT) {
4393                invalidate();
4394                return;
4395            }
4396
4397            // Dynamic height, but height has stayed the same,
4398            // so use our new text layout.
4399            if (mLayout.getHeight() == oldht &&
4400                (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
4401                invalidate();
4402                return;
4403            }
4404
4405            // We lose: the height has changed and we have a dynamic height.
4406            // Request a new view layout using our new text layout.
4407            requestLayout();
4408            invalidate();
4409        } else {
4410            // Dynamic width, so we have no choice but to request a new
4411            // view layout with a new text layout.
4412
4413            nullLayouts();
4414            requestLayout();
4415            invalidate();
4416        }
4417    }
4418
4419    /**
4420     * Returns true if anything changed.
4421     */
4422    private boolean bringTextIntoView() {
4423        int line = 0;
4424        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
4425            line = mLayout.getLineCount() - 1;
4426        }
4427
4428        Layout.Alignment a = mLayout.getParagraphAlignment(line);
4429        int dir = mLayout.getParagraphDirection(line);
4430        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
4431        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
4432        int ht = mLayout.getHeight();
4433
4434        int scrollx, scrolly;
4435
4436        if (a == Layout.Alignment.ALIGN_CENTER) {
4437            /*
4438             * Keep centered if possible, or, if it is too wide to fit,
4439             * keep leading edge in view.
4440             */
4441
4442            int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
4443            int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
4444
4445            if (right - left < hspace) {
4446                scrollx = (right + left) / 2 - hspace / 2;
4447            } else {
4448                if (dir < 0) {
4449                    scrollx = right - hspace;
4450                } else {
4451                    scrollx = left;
4452                }
4453            }
4454        } else if (a == Layout.Alignment.ALIGN_NORMAL) {
4455            /*
4456             * Keep leading edge in view.
4457             */
4458
4459            if (dir < 0) {
4460                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
4461                scrollx = right - hspace;
4462            } else {
4463                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
4464            }
4465        } else /* a == Layout.Alignment.ALIGN_OPPOSITE */ {
4466            /*
4467             * Keep trailing edge in view.
4468             */
4469
4470            if (dir < 0) {
4471                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
4472            } else {
4473                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
4474                scrollx = right - hspace;
4475            }
4476        }
4477
4478        if (ht < vspace) {
4479            scrolly = 0;
4480        } else {
4481            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
4482                scrolly = ht - vspace;
4483            } else {
4484                scrolly = 0;
4485            }
4486        }
4487
4488        if (scrollx != mScrollX || scrolly != mScrollY) {
4489            scrollTo(scrollx, scrolly);
4490            return true;
4491        } else {
4492            return false;
4493        }
4494    }
4495
4496    /**
4497     * Returns true if anything changed.
4498     */
4499    private boolean bringPointIntoView(int offset) {
4500        boolean changed = false;
4501
4502        int line = mLayout.getLineForOffset(offset);
4503
4504        // FIXME: Is it okay to truncate this, or should we round?
4505        final int x = (int)mLayout.getPrimaryHorizontal(offset);
4506        final int top = mLayout.getLineTop(line);
4507        final int bottom = mLayout.getLineTop(line+1);
4508
4509        int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
4510        int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
4511        int ht = mLayout.getHeight();
4512
4513        int grav;
4514
4515        switch (mLayout.getParagraphAlignment(line)) {
4516            case ALIGN_NORMAL:
4517                grav = 1;
4518                break;
4519
4520            case ALIGN_OPPOSITE:
4521                grav = -1;
4522                break;
4523
4524            default:
4525                grav = 0;
4526        }
4527
4528        grav *= mLayout.getParagraphDirection(line);
4529
4530        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
4531        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
4532
4533        int hslack = (bottom - top) / 2;
4534        int vslack = hslack;
4535
4536        if (vslack > vspace / 4)
4537            vslack = vspace / 4;
4538        if (hslack > hspace / 4)
4539            hslack = hspace / 4;
4540
4541        int hs = mScrollX;
4542        int vs = mScrollY;
4543
4544        if (top - vs < vslack)
4545            vs = top - vslack;
4546        if (bottom - vs > vspace - vslack)
4547            vs = bottom - (vspace - vslack);
4548        if (ht - vs < vspace)
4549            vs = ht - vspace;
4550        if (0 - vs > 0)
4551            vs = 0;
4552
4553        if (grav != 0) {
4554            if (x - hs < hslack) {
4555                hs = x - hslack;
4556            }
4557            if (x - hs > hspace - hslack) {
4558                hs = x - (hspace - hslack);
4559            }
4560        }
4561
4562        if (grav < 0) {
4563            if (left - hs > 0)
4564                hs = left;
4565            if (right - hs < hspace)
4566                hs = right - hspace;
4567        } else if (grav > 0) {
4568            if (right - hs < hspace)
4569                hs = right - hspace;
4570            if (left - hs > 0)
4571                hs = left;
4572        } else /* grav == 0 */ {
4573            if (right - left <= hspace) {
4574                /*
4575                 * If the entire text fits, center it exactly.
4576                 */
4577                hs = left - (hspace - (right - left)) / 2;
4578            } else if (x > right - hslack) {
4579                /*
4580                 * If we are near the right edge, keep the right edge
4581                 * at the edge of the view.
4582                 */
4583                hs = right - hspace;
4584            } else if (x < left + hslack) {
4585                /*
4586                 * If we are near the left edge, keep the left edge
4587                 * at the edge of the view.
4588                 */
4589                hs = left;
4590            } else if (left > hs) {
4591                /*
4592                 * Is there whitespace visible at the left?  Fix it if so.
4593                 */
4594                hs = left;
4595            } else if (right < hs + hspace) {
4596                /*
4597                 * Is there whitespace visible at the right?  Fix it if so.
4598                 */
4599                hs = right - hspace;
4600            } else {
4601                /*
4602                 * Otherwise, float as needed.
4603                 */
4604                if (x - hs < hslack) {
4605                    hs = x - hslack;
4606                }
4607                if (x - hs > hspace - hslack) {
4608                    hs = x - (hspace - hslack);
4609                }
4610            }
4611        }
4612
4613        if (hs != mScrollX || vs != mScrollY) {
4614            if (mScroller == null) {
4615                scrollTo(hs, vs);
4616            } else {
4617                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
4618                int dx = hs - mScrollX;
4619                int dy = vs - mScrollY;
4620
4621                if (duration > ANIMATED_SCROLL_GAP) {
4622                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
4623                    invalidate();
4624                } else {
4625                    if (!mScroller.isFinished()) {
4626                        mScroller.abortAnimation();
4627                    }
4628
4629                    scrollBy(dx, dy);
4630                }
4631
4632                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
4633            }
4634
4635            changed = true;
4636        }
4637
4638        if (isFocused()) {
4639            // This offsets because getInterestingRect() is in terms of
4640            // viewport coordinates, but requestRectangleOnScreen()
4641            // is in terms of content coordinates.
4642
4643            Rect r = new Rect();
4644            getInterestingRect(r, x, top, bottom, line);
4645            r.offset(mScrollX, mScrollY);
4646
4647            if (requestRectangleOnScreen(r)) {
4648                changed = true;
4649            }
4650        }
4651
4652        return changed;
4653    }
4654
4655    @Override
4656    public void computeScroll() {
4657        if (mScroller != null) {
4658            if (mScroller.computeScrollOffset()) {
4659                mScrollX = mScroller.getCurrX();
4660                mScrollY = mScroller.getCurrY();
4661                postInvalidate();  // So we draw again
4662            }
4663        }
4664    }
4665
4666    private void getInterestingRect(Rect r, int h, int top, int bottom,
4667                                    int line) {
4668        int paddingTop = getExtendedPaddingTop();
4669        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4670            paddingTop += getVerticalOffset(false);
4671        }
4672        top += paddingTop;
4673        bottom += paddingTop;
4674        h += getCompoundPaddingLeft();
4675
4676        if (line == 0)
4677            top -= getExtendedPaddingTop();
4678        if (line == mLayout.getLineCount() - 1)
4679            bottom += getExtendedPaddingBottom();
4680
4681        r.set(h, top, h+1, bottom);
4682        r.offset(-mScrollX, -mScrollY);
4683    }
4684
4685    @Override
4686    public void debug(int depth) {
4687        super.debug(depth);
4688
4689        String output = debugIndent(depth);
4690        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
4691                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
4692                + "} ";
4693
4694        if (mText != null) {
4695
4696            output += "mText=\"" + mText + "\" ";
4697            if (mLayout != null) {
4698                output += "mLayout width=" + mLayout.getWidth()
4699                        + " height=" + mLayout.getHeight();
4700            }
4701        } else {
4702            output += "mText=NULL";
4703        }
4704        Log.d(VIEW_LOG_TAG, output);
4705    }
4706
4707    /**
4708     * Convenience for {@link Selection#getSelectionStart}.
4709     */
4710    public int getSelectionStart() {
4711        return Selection.getSelectionStart(getText());
4712    }
4713
4714    /**
4715     * Convenience for {@link Selection#getSelectionEnd}.
4716     */
4717    public int getSelectionEnd() {
4718        return Selection.getSelectionEnd(getText());
4719    }
4720
4721    /**
4722     * Return true iff there is a selection inside this text view.
4723     */
4724    public boolean hasSelection() {
4725        return getSelectionStart() != getSelectionEnd();
4726    }
4727
4728    /**
4729     * Sets the properties of this field (lines, horizontally scrolling,
4730     * transformation method) to be for a single-line input.
4731     *
4732     * @attr ref android.R.styleable#TextView_singleLine
4733     */
4734    public void setSingleLine() {
4735        setSingleLine(true);
4736    }
4737
4738    /**
4739     * If true, sets the properties of this field (lines, horizontally
4740     * scrolling, transformation method) to be for a single-line input;
4741     * if false, restores these to the default conditions.
4742     * Note that calling this with false restores default conditions,
4743     * not necessarily those that were in effect prior to calling
4744     * it with true.
4745     *
4746     * @attr ref android.R.styleable#TextView_singleLine
4747     */
4748    public void setSingleLine(boolean singleLine) {
4749        mSingleLine = singleLine;
4750        if ((mInputType&EditorInfo.TYPE_MASK_CLASS)
4751                == EditorInfo.TYPE_CLASS_TEXT) {
4752            if (singleLine) {
4753                mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
4754            } else {
4755                mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
4756            }
4757        }
4758
4759        if (singleLine) {
4760            setLines(1);
4761            setHorizontallyScrolling(true);
4762            setTransformationMethod(SingleLineTransformationMethod.
4763                                    getInstance());
4764        } else {
4765            setMaxLines(Integer.MAX_VALUE);
4766            setHorizontallyScrolling(false);
4767            setTransformationMethod(null);
4768        }
4769    }
4770
4771    /**
4772     * Causes words in the text that are longer than the view is wide
4773     * to be ellipsized instead of broken in the middle.  You may also
4774     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
4775     * to constrain the text toa single line.  Use <code>null</code>
4776     * to turn off ellipsizing.
4777     *
4778     * @attr ref android.R.styleable#TextView_ellipsize
4779     */
4780    public void setEllipsize(TextUtils.TruncateAt where) {
4781        mEllipsize = where;
4782
4783        if (mLayout != null) {
4784            nullLayouts();
4785            requestLayout();
4786            invalidate();
4787        }
4788    }
4789
4790    /**
4791     * Sets how many times to repeat the marquee animation. Only applied if the
4792     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
4793     *
4794     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
4795     */
4796    public void setMarqueeRepeatLimit(int marqueeLimit) {
4797        mMarqueeRepeatLimit = marqueeLimit;
4798    }
4799
4800    /**
4801     * Returns where, if anywhere, words that are longer than the view
4802     * is wide should be ellipsized.
4803     */
4804    @ViewDebug.ExportedProperty
4805    public TextUtils.TruncateAt getEllipsize() {
4806        return mEllipsize;
4807    }
4808
4809    /**
4810     * Set the TextView so that when it takes focus, all the text is
4811     * selected.
4812     *
4813     * @attr ref android.R.styleable#TextView_selectAllOnFocus
4814     */
4815    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
4816        mSelectAllOnFocus = selectAllOnFocus;
4817
4818        if (selectAllOnFocus && !(mText instanceof Spannable)) {
4819            setText(mText, BufferType.SPANNABLE);
4820        }
4821    }
4822
4823    /**
4824     * Set whether the cursor is visible.  The default is true.
4825     *
4826     * @attr ref android.R.styleable#TextView_cursorVisible
4827     */
4828    public void setCursorVisible(boolean visible) {
4829        mCursorVisible = visible;
4830        invalidate();
4831
4832        if (visible) {
4833            makeBlink();
4834        } else if (mBlink != null) {
4835            mBlink.removeCallbacks(mBlink);
4836        }
4837    }
4838
4839    private boolean canMarquee() {
4840        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
4841        return width > 0 && mLayout.getLineWidth(0) > width;
4842    }
4843
4844    private void startMarquee() {
4845        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
4846                getLineCount() == 1 && canMarquee()) {
4847            if (mMarquee == null) mMarquee = new Marquee(this);
4848            mMarquee.start(mMarqueeRepeatLimit);
4849        }
4850    }
4851
4852    private void stopMarquee() {
4853        if (mMarquee != null && !mMarquee.isStopped()) {
4854            mMarquee.stop();
4855        }
4856    }
4857
4858    private void startStopMarquee(boolean start) {
4859        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4860            if (start) {
4861                startMarquee();
4862            } else {
4863                stopMarquee();
4864            }
4865        }
4866    }
4867
4868    private static final class Marquee extends Handler {
4869        // TODO: Add an option to configure this
4870        private static final int MARQUEE_DELAY = 1200;
4871        private static final int MARQUEE_RESTART_DELAY = 1200;
4872        private static final int MARQUEE_RESOLUTION = 1000 / 30;
4873        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
4874
4875        private static final byte MARQUEE_STOPPED = 0x0;
4876        private static final byte MARQUEE_STARTING = 0x1;
4877        private static final byte MARQUEE_RUNNING = 0x2;
4878
4879        private static final int MESSAGE_START = 0x1;
4880        private static final int MESSAGE_TICK = 0x2;
4881        private static final int MESSAGE_RESTART = 0x3;
4882
4883        private final WeakReference<TextView> mView;
4884
4885        private byte mStatus = MARQUEE_STOPPED;
4886        private float mScrollUnit;
4887        private float mMaxScroll;
4888        private int mRepeatLimit;
4889
4890        float mScroll;
4891
4892        Marquee(TextView v) {
4893            mView = new WeakReference<TextView>(v);
4894        }
4895
4896        @Override
4897        public void handleMessage(Message msg) {
4898            switch (msg.what) {
4899                case MESSAGE_START:
4900                    mStatus = MARQUEE_RUNNING;
4901                    tick();
4902                    break;
4903                case MESSAGE_TICK:
4904                    tick();
4905                    break;
4906                case MESSAGE_RESTART:
4907                    if (mStatus == MARQUEE_RUNNING) {
4908                        if (mRepeatLimit >= 0) {
4909                            mRepeatLimit--;
4910                        }
4911                        start(mRepeatLimit);
4912                    }
4913                    break;
4914            }
4915        }
4916
4917        void tick() {
4918            if (mStatus != MARQUEE_RUNNING) {
4919                return;
4920            }
4921
4922            removeMessages(MESSAGE_TICK);
4923
4924            final TextView textView = mView.get();
4925            if (textView != null && (textView.isFocused() || textView.isSelected())) {
4926                mScroll += mScrollUnit;
4927                if (mScroll > mMaxScroll) {
4928                    mScroll = mMaxScroll;
4929                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
4930                } else {
4931                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
4932                }
4933                textView.invalidate();
4934            }
4935        }
4936
4937        void stop() {
4938            mStatus = MARQUEE_STOPPED;
4939            removeMessages(MESSAGE_START);
4940            removeMessages(MESSAGE_RESTART);
4941            removeMessages(MESSAGE_TICK);
4942            resetScroll();
4943        }
4944
4945        private void resetScroll() {
4946            mScroll = 0.0f;
4947            final TextView textView = mView.get();
4948            if (textView != null) textView.invalidate();
4949        }
4950
4951        void start(int repeatLimit) {
4952            if (repeatLimit == 0) {
4953                stop();
4954                return;
4955            }
4956            mRepeatLimit = repeatLimit;
4957            final TextView textView = mView.get();
4958            if (textView != null && textView.mLayout != null) {
4959                mStatus = MARQUEE_STARTING;
4960                mScroll = 0.0f;
4961                mScrollUnit = MARQUEE_PIXELS_PER_SECOND / (float) MARQUEE_RESOLUTION;
4962                mMaxScroll = textView.mLayout.getLineWidth(0) - (textView.getWidth() -
4963                        textView.getCompoundPaddingLeft() - textView.getCompoundPaddingRight());
4964                textView.invalidate();
4965                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
4966            }
4967        }
4968
4969        boolean isRunning() {
4970            return mStatus == MARQUEE_RUNNING;
4971        }
4972
4973        boolean isStopped() {
4974            return mStatus == MARQUEE_STOPPED;
4975        }
4976    }
4977
4978    /**
4979     * This method is called when the text is changed, in case any
4980     * subclasses would like to know.
4981     *
4982     * @param text The text the TextView is displaying.
4983     * @param start The offset of the start of the range of the text
4984     *              that was modified.
4985     * @param before The offset of the former end of the range of the
4986     *               text that was modified.  If text was simply inserted,
4987     *               this will be the same as <code>start</code>.
4988     *               If text was replaced with new text or deleted, the
4989     *               length of the old text was <code>before-start</code>.
4990     * @param after The offset of the end of the range of the text
4991     *              that was modified.  If text was simply deleted,
4992     *              this will be the same as <code>start</code>.
4993     *              If text was replaced with new text or inserted,
4994     *              the length of the new text is <code>after-start</code>.
4995     */
4996    protected void onTextChanged(CharSequence text,
4997                                 int start, int before, int after) {
4998    }
4999
5000    /**
5001     * Adds a TextWatcher to the list of those whose methods are called
5002     * whenever this TextView's text changes.
5003     * <p>
5004     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
5005     * not called after {@link #setText} calls.  Now, doing {@link #setText}
5006     * if there are any text changed listeners forces the buffer type to
5007     * Editable if it would not otherwise be and does call this method.
5008     */
5009    public void addTextChangedListener(TextWatcher watcher) {
5010        if (mListeners == null) {
5011            mListeners = new ArrayList<TextWatcher>();
5012        }
5013
5014        mListeners.add(watcher);
5015    }
5016
5017    /**
5018     * Removes the specified TextWatcher from the list of those whose
5019     * methods are called
5020     * whenever this TextView's text changes.
5021     */
5022    public void removeTextChangedListener(TextWatcher watcher) {
5023        if (mListeners != null) {
5024            int i = mListeners.indexOf(watcher);
5025
5026            if (i >= 0) {
5027                mListeners.remove(i);
5028            }
5029        }
5030    }
5031
5032    private void sendBeforeTextChanged(CharSequence text, int start, int before,
5033                                   int after) {
5034        if (mListeners != null) {
5035            final ArrayList<TextWatcher> list = mListeners;
5036            final int count = list.size();
5037            for (int i = 0; i < count; i++) {
5038                list.get(i).beforeTextChanged(text, start, before, after);
5039            }
5040        }
5041    }
5042
5043    /**
5044     * Not private so it can be called from an inner class without going
5045     * through a thunk.
5046     */
5047    void sendOnTextChanged(CharSequence text, int start, int before,
5048                                   int after) {
5049        if (mListeners != null) {
5050            final ArrayList<TextWatcher> list = mListeners;
5051            final int count = list.size();
5052            for (int i = 0; i < count; i++) {
5053                list.get(i).onTextChanged(text, start, before, after);
5054            }
5055        }
5056    }
5057
5058    /**
5059     * Not private so it can be called from an inner class without going
5060     * through a thunk.
5061     */
5062    void sendAfterTextChanged(Editable text) {
5063        if (mListeners != null) {
5064            final ArrayList<TextWatcher> list = mListeners;
5065            final int count = list.size();
5066            for (int i = 0; i < count; i++) {
5067                list.get(i).afterTextChanged(text);
5068            }
5069        }
5070    }
5071
5072    /**
5073     * Not private so it can be called from an inner class without going
5074     * through a thunk.
5075     */
5076    void handleTextChanged(CharSequence buffer, int start,
5077            int before, int after) {
5078        invalidate();
5079
5080        int curs = Selection.getSelectionStart(buffer);
5081
5082        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) ==
5083                             Gravity.BOTTOM) {
5084            registerForPreDraw();
5085        }
5086
5087        if (curs >= 0) {
5088            mHighlightPathBogus = true;
5089
5090            if (isFocused()) {
5091                mShowCursor = SystemClock.uptimeMillis();
5092                makeBlink();
5093            }
5094        }
5095
5096        checkForResize();
5097
5098        sendOnTextChanged(buffer, start, before, after);
5099        onTextChanged(buffer, start, before, after);
5100    }
5101
5102    /**
5103     * Not private so it can be called from an inner class without going
5104     * through a thunk.
5105     */
5106    void spanChange(Spanned buf, Object what, int o, int n) {
5107        // XXX Make the start and end move together if this ends up
5108        // spending too much time invalidating.
5109
5110        if (what == Selection.SELECTION_END) {
5111            mHighlightPathBogus = true;
5112
5113            if (!isFocused()) {
5114                mSelectionMoved = true;
5115            }
5116
5117            if (o >= 0 || n >= 0) {
5118                invalidateCursor(Selection.getSelectionStart(buf), o, n);
5119                registerForPreDraw();
5120
5121                if (isFocused()) {
5122                    mShowCursor = SystemClock.uptimeMillis();
5123                    makeBlink();
5124                }
5125            }
5126        }
5127
5128        if (what == Selection.SELECTION_START) {
5129            mHighlightPathBogus = true;
5130
5131            if (!isFocused()) {
5132                mSelectionMoved = true;
5133            }
5134
5135            if (o >= 0 || n >= 0) {
5136                invalidateCursor(Selection.getSelectionEnd(buf), o, n);
5137            }
5138        }
5139
5140        if (what instanceof UpdateLayout ||
5141            what instanceof ParagraphStyle) {
5142            invalidate();
5143            mHighlightPathBogus = true;
5144            checkForResize();
5145        }
5146
5147        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
5148            mHighlightPathBogus = true;
5149
5150            if (Selection.getSelectionStart(buf) >= 0) {
5151                invalidateCursor();
5152            }
5153        }
5154    }
5155
5156    private class ChangeWatcher
5157    implements TextWatcher, SpanWatcher {
5158        public void beforeTextChanged(CharSequence buffer, int start,
5159                                      int before, int after) {
5160            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
5161        }
5162
5163        public void onTextChanged(CharSequence buffer, int start,
5164                                  int before, int after) {
5165            TextView.this.handleTextChanged(buffer, start, before, after);
5166        }
5167
5168        public void afterTextChanged(Editable buffer) {
5169            TextView.this.sendAfterTextChanged(buffer);
5170            TextView.this.reportExtractedText();
5171        }
5172
5173        public void onSpanChanged(Spannable buf,
5174                                  Object what, int s, int e, int st, int en) {
5175            TextView.this.spanChange(buf, what, s, st);
5176        }
5177
5178        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
5179            TextView.this.spanChange(buf, what, -1, s);
5180        }
5181
5182        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
5183            TextView.this.spanChange(buf, what, s, -1);
5184        }
5185    }
5186
5187    private void makeBlink() {
5188        if (!mCursorVisible) {
5189            if (mBlink != null) {
5190                mBlink.removeCallbacks(mBlink);
5191            }
5192
5193            return;
5194        }
5195
5196        if (mBlink == null)
5197            mBlink = new Blink(this);
5198
5199        mBlink.removeCallbacks(mBlink);
5200        mBlink.postAtTime(mBlink, mShowCursor + BLINK);
5201    }
5202
5203    @Override
5204    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
5205        mShowCursor = SystemClock.uptimeMillis();
5206
5207        if (focused) {
5208            int selStart = getSelectionStart();
5209            int selEnd = getSelectionEnd();
5210
5211            if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) {
5212                boolean selMoved = mSelectionMoved;
5213
5214                if (mMovement != null) {
5215                    mMovement.onTakeFocus(this, (Spannable) mText, direction);
5216                }
5217
5218                if (mSelectAllOnFocus) {
5219                    Selection.setSelection((Spannable) mText, 0, mText.length());
5220                }
5221
5222                if (selMoved && selStart >= 0 && selEnd >= 0) {
5223                    /*
5224                     * Someone intentionally set the selection, so let them
5225                     * do whatever it is that they wanted to do instead of
5226                     * the default on-focus behavior.  We reset the selection
5227                     * here instead of just skipping the onTakeFocus() call
5228                     * because some movement methods do something other than
5229                     * just setting the selection in theirs and we still
5230                     * need to go through that path.
5231                     */
5232
5233                    Selection.setSelection((Spannable) mText, selStart, selEnd);
5234                }
5235            }
5236
5237            mFrozenWithFocus = false;
5238            mSelectionMoved = false;
5239
5240            if (mText instanceof Spannable) {
5241                Spannable sp = (Spannable) mText;
5242                MetaKeyKeyListener.resetMetaState(sp);
5243            }
5244
5245            makeBlink();
5246
5247            if (mError != null) {
5248                showError();
5249            }
5250        } else {
5251            if (mError != null) {
5252                hideError();
5253            }
5254        }
5255
5256        startStopMarquee(focused);
5257
5258        if (mTransformation != null) {
5259            mTransformation.onFocusChanged(this, mText, focused, direction,
5260                                           previouslyFocusedRect);
5261        }
5262
5263        super.onFocusChanged(focused, direction, previouslyFocusedRect);
5264    }
5265
5266    @Override
5267    public void onWindowFocusChanged(boolean hasWindowFocus) {
5268        super.onWindowFocusChanged(hasWindowFocus);
5269
5270        if (hasWindowFocus) {
5271            if (mBlink != null) {
5272                mBlink.uncancel();
5273
5274                if (isFocused()) {
5275                    mShowCursor = SystemClock.uptimeMillis();
5276                    makeBlink();
5277                }
5278            }
5279        } else {
5280            if (mBlink != null) {
5281                mBlink.cancel();
5282            }
5283        }
5284
5285        startStopMarquee(hasWindowFocus);
5286    }
5287
5288    @Override
5289    public void setSelected(boolean selected) {
5290        boolean wasSelected = isSelected();
5291
5292        super.setSelected(selected);
5293
5294        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5295            if (selected) {
5296                startMarquee();
5297            } else {
5298                stopMarquee();
5299            }
5300        }
5301    }
5302
5303    @Override
5304    public boolean onTouchEvent(MotionEvent event) {
5305        final boolean superResult = super.onTouchEvent(event);
5306
5307        /*
5308         * Don't handle the release after a long press, because it will
5309         * move the selection away from whatever the menu action was
5310         * trying to affect.
5311         */
5312        if (mEatTouchRelease && event.getAction() == MotionEvent.ACTION_UP) {
5313            mEatTouchRelease = false;
5314            return superResult;
5315        }
5316
5317        if (mMovement != null && mText instanceof Spannable &&
5318            mLayout != null) {
5319            boolean moved = mMovement.onTouchEvent(this, (Spannable) mText, event);
5320
5321            if (mText instanceof Editable
5322                    && mInputType != EditorInfo.TYPE_NULL) {
5323                if (event.getAction() == MotionEvent.ACTION_UP && isFocused()) {
5324                    InputMethodManager imm = (InputMethodManager)
5325                            getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
5326                    imm.showSoftInput(this);
5327                }
5328            }
5329
5330            if (moved) {
5331                return true;
5332            }
5333        }
5334
5335        return superResult;
5336    }
5337
5338    @Override
5339    public boolean onTrackballEvent(MotionEvent event) {
5340        if (mMovement != null && mText instanceof Spannable &&
5341            mLayout != null) {
5342            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
5343                return true;
5344            }
5345        }
5346
5347        return super.onTrackballEvent(event);
5348    }
5349
5350    public void setScroller(Scroller s) {
5351        mScroller = s;
5352    }
5353
5354    private static class Blink extends Handler
5355            implements Runnable {
5356        private WeakReference<TextView> mView;
5357        private boolean mCancelled;
5358
5359        public Blink(TextView v) {
5360            mView = new WeakReference<TextView>(v);
5361        }
5362
5363        public void run() {
5364            if (mCancelled) {
5365                return;
5366            }
5367
5368            removeCallbacks(Blink.this);
5369
5370            TextView tv = mView.get();
5371
5372            if (tv != null && tv.isFocused()) {
5373                int st = Selection.getSelectionStart(tv.mText);
5374                int en = Selection.getSelectionEnd(tv.mText);
5375
5376                if (st == en && st >= 0 && en >= 0) {
5377                    if (tv.mLayout != null) {
5378                        tv.invalidateCursorPath();
5379                    }
5380
5381                    postAtTime(this, SystemClock.uptimeMillis() + BLINK);
5382                }
5383            }
5384        }
5385
5386        void cancel() {
5387            if (!mCancelled) {
5388                removeCallbacks(Blink.this);
5389                mCancelled = true;
5390            }
5391        }
5392
5393        void uncancel() {
5394            mCancelled = false;
5395        }
5396    }
5397
5398    @Override
5399    protected float getLeftFadingEdgeStrength() {
5400        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5401            if (mMarquee != null && !mMarquee.isStopped()) {
5402                final Marquee marquee = mMarquee;
5403                return marquee.mScroll / getHorizontalFadingEdgeLength();
5404            } else if (getLineCount() == 1) {
5405                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
5406                    case Gravity.LEFT:
5407                        return 0.0f;
5408                    case Gravity.RIGHT:
5409                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
5410                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
5411                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
5412                    case Gravity.CENTER_HORIZONTAL:
5413                        return 0.0f;
5414                }
5415            }
5416        }
5417        return super.getLeftFadingEdgeStrength();
5418    }
5419
5420    @Override
5421    protected float getRightFadingEdgeStrength() {
5422        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5423            if (mMarquee != null && !mMarquee.isStopped()) {
5424                final Marquee marquee = mMarquee;
5425                return (marquee.mMaxScroll - marquee.mScroll) / getHorizontalFadingEdgeLength();
5426            } else if (getLineCount() == 1) {
5427                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
5428                    case Gravity.LEFT:
5429                        return (mLayout.getLineRight(0) - mScrollX - (mRight - mLeft) -
5430                                getCompoundPaddingLeft() - getCompoundPaddingRight()) /
5431                                getHorizontalFadingEdgeLength();
5432                    case Gravity.RIGHT:
5433                        return 0.0f;
5434                    case Gravity.CENTER_HORIZONTAL:
5435                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
5436                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
5437                                getHorizontalFadingEdgeLength();
5438                }
5439            }
5440        }
5441        return super.getRightFadingEdgeStrength();
5442    }
5443
5444    @Override
5445    protected int computeHorizontalScrollRange() {
5446        if (mLayout != null)
5447            return mLayout.getWidth();
5448
5449        return super.computeHorizontalScrollRange();
5450    }
5451
5452    @Override
5453    protected int computeVerticalScrollRange() {
5454        if (mLayout != null)
5455            return mLayout.getHeight();
5456
5457        return super.computeVerticalScrollRange();
5458    }
5459
5460    public enum BufferType {
5461        NORMAL, SPANNABLE, EDITABLE,
5462    }
5463
5464    /**
5465     * Returns the TextView_textColor attribute from the
5466     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
5467     * from the TextView_textAppearance attribute, if TextView_textColor
5468     * was not set directly.
5469     */
5470    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
5471        ColorStateList colors;
5472        colors = attrs.getColorStateList(com.android.internal.R.styleable.
5473                                         TextView_textColor);
5474
5475        if (colors == null) {
5476            int ap = attrs.getResourceId(com.android.internal.R.styleable.
5477                                         TextView_textAppearance, -1);
5478            if (ap != -1) {
5479                TypedArray appearance;
5480                appearance = context.obtainStyledAttributes(ap,
5481                                            com.android.internal.R.styleable.TextAppearance);
5482                colors = appearance.getColorStateList(com.android.internal.R.styleable.
5483                                                  TextAppearance_textColor);
5484                appearance.recycle();
5485            }
5486        }
5487
5488        return colors;
5489    }
5490
5491    /**
5492     * Returns the default color from the TextView_textColor attribute
5493     * from the AttributeSet, if set, or the default color from the
5494     * TextAppearance_textColor from the TextView_textAppearance attribute,
5495     * if TextView_textColor was not set directly.
5496     */
5497    public static int getTextColor(Context context,
5498                                   TypedArray attrs,
5499                                   int def) {
5500        ColorStateList colors = getTextColors(context, attrs);
5501
5502        if (colors == null) {
5503            return def;
5504        } else {
5505            return colors.getDefaultColor();
5506        }
5507    }
5508
5509    @Override
5510    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
5511        switch (keyCode) {
5512        case KeyEvent.KEYCODE_A:
5513            if (canSelectAll()) {
5514                return onMenu(ID_SELECT_ALL);
5515            }
5516
5517            break;
5518
5519        case KeyEvent.KEYCODE_X:
5520            if (canCut()) {
5521                return onMenu(ID_CUT);
5522            }
5523
5524            break;
5525
5526        case KeyEvent.KEYCODE_C:
5527            if (canCopy()) {
5528                return onMenu(ID_COPY);
5529            }
5530
5531            break;
5532
5533        case KeyEvent.KEYCODE_V:
5534            if (canPaste()) {
5535                return onMenu(ID_PASTE);
5536            }
5537
5538            break;
5539        }
5540
5541        return super.onKeyShortcut(keyCode, event);
5542    }
5543
5544    private boolean canSelectAll() {
5545        if (mText instanceof Spannable && mText.length() != 0 &&
5546            mMovement != null && mMovement.canSelectArbitrarily()) {
5547            return true;
5548        }
5549
5550        return false;
5551    }
5552
5553    private boolean canCut() {
5554        if (mTransformation instanceof PasswordTransformationMethod) {
5555            return false;
5556        }
5557
5558        if (mText.length() > 0 && getSelectionStart() >= 0) {
5559            if (mText instanceof Editable && mInput != null) {
5560                return true;
5561            }
5562        }
5563
5564        return false;
5565    }
5566
5567    private boolean canCopy() {
5568        if (mTransformation instanceof PasswordTransformationMethod) {
5569            return false;
5570        }
5571
5572        if (mText.length() > 0 && getSelectionStart() >= 0) {
5573            return true;
5574        }
5575
5576        return false;
5577    }
5578
5579    private boolean canPaste() {
5580        if (mText instanceof Editable && mInput != null &&
5581            getSelectionStart() >= 0 && getSelectionEnd() >= 0) {
5582            ClipboardManager clip = (ClipboardManager)getContext()
5583                    .getSystemService(Context.CLIPBOARD_SERVICE);
5584            if (clip.hasText()) {
5585                return true;
5586            }
5587        }
5588
5589        return false;
5590    }
5591
5592    @Override
5593    protected void onCreateContextMenu(ContextMenu menu) {
5594        super.onCreateContextMenu(menu);
5595        boolean added = false;
5596
5597        if (!isFocused()) {
5598            if (isFocusable() && mInput != null) {
5599                if (canCopy()) {
5600                    MenuHandler handler = new MenuHandler();
5601                    int name = com.android.internal.R.string.copyAll;
5602
5603                    menu.add(0, ID_COPY, 0, name).
5604                        setOnMenuItemClickListener(handler).
5605                        setAlphabeticShortcut('c');
5606                    menu.setHeaderTitle(com.android.internal.R.string.
5607                        editTextMenuTitle);
5608                }
5609            }
5610
5611            return;
5612        }
5613
5614        MenuHandler handler = new MenuHandler();
5615
5616        if (canSelectAll()) {
5617            menu.add(0, ID_SELECT_ALL, 0,
5618                    com.android.internal.R.string.selectAll).
5619                setOnMenuItemClickListener(handler).
5620                setAlphabeticShortcut('a');
5621            added = true;
5622        }
5623
5624        boolean selection = getSelectionStart() != getSelectionEnd();
5625
5626        if (canCut()) {
5627            int name;
5628            if (selection) {
5629                name = com.android.internal.R.string.cut;
5630            } else {
5631                name = com.android.internal.R.string.cutAll;
5632            }
5633
5634            menu.add(0, ID_CUT, 0, name).
5635                setOnMenuItemClickListener(handler).
5636                setAlphabeticShortcut('x');
5637            added = true;
5638        }
5639
5640        if (canCopy()) {
5641            int name;
5642            if (selection) {
5643                name = com.android.internal.R.string.copy;
5644            } else {
5645                name = com.android.internal.R.string.copyAll;
5646            }
5647
5648            menu.add(0, ID_COPY, 0, name).
5649                setOnMenuItemClickListener(handler).
5650                setAlphabeticShortcut('c');
5651            added = true;
5652        }
5653
5654        if (canPaste()) {
5655            menu.add(0, ID_PASTE, 0, com.android.internal.R.string.paste).
5656                    setOnMenuItemClickListener(handler).
5657                    setAlphabeticShortcut('v');
5658            added = true;
5659        }
5660
5661        if (mText instanceof Spanned) {
5662            int selStart = getSelectionStart();
5663            int selEnd = getSelectionEnd();
5664
5665            int min = Math.min(selStart, selEnd);
5666            int max = Math.max(selStart, selEnd);
5667
5668            URLSpan[] urls = ((Spanned) mText).getSpans(min, max,
5669                                                        URLSpan.class);
5670            if (urls.length == 1) {
5671                menu.add(0, ID_COPY_URL, 0,
5672                         com.android.internal.R.string.copyUrl).
5673                            setOnMenuItemClickListener(handler);
5674                added = true;
5675            }
5676        }
5677
5678        InputMethodManager imm = InputMethodManager.peekInstance();
5679        if (imm != null && imm.isActive(this)) {
5680            menu.add(1, ID_SWITCH_IME, 0, com.android.internal.R.string.inputMethod).
5681                    setOnMenuItemClickListener(handler);
5682            added = true;
5683        }
5684
5685        if (added) {
5686            menu.setHeaderTitle(com.android.internal.R.string.editTextMenuTitle);
5687        }
5688    }
5689
5690    private static final int ID_SELECT_ALL = com.android.internal.R.id.selectAll;
5691    private static final int ID_CUT = com.android.internal.R.id.cut;
5692    private static final int ID_COPY = com.android.internal.R.id.copy;
5693    private static final int ID_PASTE = com.android.internal.R.id.paste;
5694    private static final int ID_COPY_URL = com.android.internal.R.id.copyUrl;
5695    private static final int ID_SWITCH_IME = com.android.internal.R.id.inputMethod;
5696
5697    private class MenuHandler implements MenuItem.OnMenuItemClickListener {
5698        public boolean onMenuItemClick(MenuItem item) {
5699            return onMenu(item.getItemId());
5700        }
5701    }
5702
5703    private boolean onMenu(int id) {
5704        int selStart = getSelectionStart();
5705        int selEnd = getSelectionEnd();
5706
5707        if (!isFocused()) {
5708            selStart = 0;
5709            selEnd = mText.length();
5710        }
5711
5712        int min = Math.min(selStart, selEnd);
5713        int max = Math.max(selStart, selEnd);
5714
5715        if (min < 0) {
5716            min = 0;
5717        }
5718        if (max < 0) {
5719            max = 0;
5720        }
5721
5722        ClipboardManager clip = (ClipboardManager)getContext()
5723                .getSystemService(Context.CLIPBOARD_SERVICE);
5724
5725        switch (id) {
5726            case ID_SELECT_ALL:
5727                Selection.setSelection((Spannable) mText, 0,
5728                                        mText.length());
5729                return true;
5730
5731            case ID_CUT:
5732                if (min == max) {
5733                    min = 0;
5734                    max = mText.length();
5735                }
5736
5737                clip.setText(mTransformed.subSequence(min, max));
5738                ((Editable) mText).delete(min, max);
5739                return true;
5740
5741            case ID_COPY:
5742                if (min == max) {
5743                    min = 0;
5744                    max = mText.length();
5745                }
5746
5747                clip.setText(mTransformed.subSequence(min, max));
5748                return true;
5749
5750            case ID_PASTE:
5751                CharSequence paste = clip.getText();
5752
5753                if (paste != null) {
5754                    Selection.setSelection((Spannable) mText, max);
5755                    ((Editable) mText).replace(min, max, paste);
5756                }
5757
5758                return true;
5759
5760            case ID_COPY_URL:
5761                URLSpan[] urls = ((Spanned) mText).getSpans(min, max,
5762                                                       URLSpan.class);
5763                if (urls.length == 1) {
5764                    clip.setText(urls[0].getURL());
5765                }
5766
5767                return true;
5768
5769            case ID_SWITCH_IME:
5770                InputMethodManager imm = InputMethodManager.peekInstance();
5771                if (imm != null) {
5772                    imm.showInputMethodPicker();
5773                }
5774                return true;
5775            }
5776
5777        return false;
5778    }
5779
5780    public boolean performLongClick() {
5781        if (super.performLongClick()) {
5782            mEatTouchRelease = true;
5783            return true;
5784        }
5785
5786        return false;
5787    }
5788
5789    private boolean mEatTouchRelease = false;
5790
5791    @ViewDebug.ExportedProperty
5792    private CharSequence            mText;
5793    private CharSequence            mTransformed;
5794    private BufferType              mBufferType = BufferType.NORMAL;
5795
5796    private int                     mInputType = EditorInfo.TYPE_NULL;
5797    private CharSequence            mHint;
5798    private Layout                  mHintLayout;
5799
5800    private KeyListener             mInput;
5801
5802    private MovementMethod          mMovement;
5803    private TransformationMethod    mTransformation;
5804    private ChangeWatcher           mChangeWatcher;
5805
5806    private ArrayList<TextWatcher>  mListeners = null;
5807
5808    // display attributes
5809    private TextPaint mTextPaint;
5810    private Paint                   mHighlightPaint;
5811    private int                     mHighlightColor = 0xFFBBDDFF;
5812    private Layout                  mLayout;
5813
5814    private long                    mShowCursor;
5815    private Blink                   mBlink;
5816    private boolean                 mCursorVisible = true;
5817
5818    private boolean                 mSelectAllOnFocus = false;
5819
5820    private int                     mGravity = Gravity.TOP | Gravity.LEFT;
5821    private boolean                 mHorizontallyScrolling;
5822
5823    private int                     mAutoLinkMask;
5824    private boolean                 mLinksClickable = true;
5825
5826    private float                   mSpacingMult = 1;
5827    private float                   mSpacingAdd = 0;
5828
5829    private static final int        LINES = 1;
5830    private static final int        EMS = LINES;
5831    private static final int        PIXELS = 2;
5832
5833    private int                     mMaximum = Integer.MAX_VALUE;
5834    private int                     mMaxMode = LINES;
5835    private int                     mMinimum = 0;
5836    private int                     mMinMode = LINES;
5837
5838    private int                     mMaxWidth = Integer.MAX_VALUE;
5839    private int                     mMaxWidthMode = PIXELS;
5840    private int                     mMinWidth = 0;
5841    private int                     mMinWidthMode = PIXELS;
5842
5843    private boolean                 mSingleLine;
5844    private int                     mDesiredHeightAtMeasure = -1;
5845    private boolean                 mIncludePad = true;
5846
5847    // tmp primitives, so we don't alloc them on each draw
5848    private Path                    mHighlightPath;
5849    private boolean                 mHighlightPathBogus = true;
5850    private static final RectF      sTempRect = new RectF();
5851
5852    // XXX should be much larger
5853    private static final int        VERY_WIDE = 16384;
5854
5855    private static final int        BLINK = 500;
5856
5857    private static final int ANIMATED_SCROLL_GAP = 250;
5858    private long mLastScroll;
5859    private Scroller mScroller = null;
5860
5861    private BoringLayout.Metrics mBoring;
5862    private BoringLayout.Metrics mHintBoring;
5863
5864    private BoringLayout mSavedLayout, mSavedHintLayout;
5865
5866    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
5867    private InputFilter[] mFilters = NO_FILTERS;
5868    private static final Spanned EMPTY_SPANNED = new SpannedString("");
5869}
5870