TextView.java revision f1e484acb594a726fb57ad0ae4cfe902c7f35858 
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.UpdateAppearance;
72import android.text.style.UpdateLayout;
73import android.text.util.Linkify;
74import android.util.AttributeSet;
75import android.util.Log;
76import android.util.FloatMath;
77import android.util.TypedValue;
78import android.view.ContextMenu;
79import android.view.Gravity;
80import android.view.KeyEvent;
81import android.view.LayoutInflater;
82import android.view.MenuItem;
83import android.view.MotionEvent;
84import android.view.View;
85import android.view.ViewDebug;
86import android.view.ViewTreeObserver;
87import android.view.ViewGroup.LayoutParams;
88import android.view.animation.AnimationUtils;
89import android.view.inputmethod.CompletionInfo;
90import android.view.inputmethod.ExtractedText;
91import android.view.inputmethod.ExtractedTextRequest;
92import android.view.inputmethod.InputConnection;
93import android.view.inputmethod.InputMethodManager;
94import android.view.inputmethod.EditorInfo;
95import android.widget.RemoteViews.RemoteView;
96
97import java.io.IOException;
98import java.lang.ref.WeakReference;
99import java.util.ArrayList;
100
101import com.android.internal.util.FastMath;
102import com.android.internal.widget.EditableInputConnection;
103
104import org.xmlpull.v1.XmlPullParserException;
105
106/**
107 * Displays text to the user and optionally allows them to edit it.  A TextView
108 * is a complete text editor, however the basic class is configured to not
109 * allow editing; see {@link EditText} for a subclass that configures the text
110 * view for editing.
111 *
112 * <p>
113 * <b>XML attributes</b>
114 * <p>
115 * See {@link android.R.styleable#TextView TextView Attributes},
116 * {@link android.R.styleable#View View Attributes}
117 *
118 * @attr ref android.R.styleable#TextView_text
119 * @attr ref android.R.styleable#TextView_bufferType
120 * @attr ref android.R.styleable#TextView_hint
121 * @attr ref android.R.styleable#TextView_textColor
122 * @attr ref android.R.styleable#TextView_textColorHighlight
123 * @attr ref android.R.styleable#TextView_textColorHint
124 * @attr ref android.R.styleable#TextView_textSize
125 * @attr ref android.R.styleable#TextView_textScaleX
126 * @attr ref android.R.styleable#TextView_typeface
127 * @attr ref android.R.styleable#TextView_textStyle
128 * @attr ref android.R.styleable#TextView_cursorVisible
129 * @attr ref android.R.styleable#TextView_maxLines
130 * @attr ref android.R.styleable#TextView_maxHeight
131 * @attr ref android.R.styleable#TextView_lines
132 * @attr ref android.R.styleable#TextView_height
133 * @attr ref android.R.styleable#TextView_minLines
134 * @attr ref android.R.styleable#TextView_minHeight
135 * @attr ref android.R.styleable#TextView_maxEms
136 * @attr ref android.R.styleable#TextView_maxWidth
137 * @attr ref android.R.styleable#TextView_ems
138 * @attr ref android.R.styleable#TextView_width
139 * @attr ref android.R.styleable#TextView_minEms
140 * @attr ref android.R.styleable#TextView_minWidth
141 * @attr ref android.R.styleable#TextView_gravity
142 * @attr ref android.R.styleable#TextView_scrollHorizontally
143 * @attr ref android.R.styleable#TextView_password
144 * @attr ref android.R.styleable#TextView_singleLine
145 * @attr ref android.R.styleable#TextView_selectAllOnFocus
146 * @attr ref android.R.styleable#TextView_includeFontPadding
147 * @attr ref android.R.styleable#TextView_maxLength
148 * @attr ref android.R.styleable#TextView_shadowColor
149 * @attr ref android.R.styleable#TextView_shadowDx
150 * @attr ref android.R.styleable#TextView_shadowDy
151 * @attr ref android.R.styleable#TextView_shadowRadius
152 * @attr ref android.R.styleable#TextView_autoLink
153 * @attr ref android.R.styleable#TextView_linksClickable
154 * @attr ref android.R.styleable#TextView_numeric
155 * @attr ref android.R.styleable#TextView_digits
156 * @attr ref android.R.styleable#TextView_phoneNumber
157 * @attr ref android.R.styleable#TextView_inputMethod
158 * @attr ref android.R.styleable#TextView_capitalize
159 * @attr ref android.R.styleable#TextView_autoText
160 * @attr ref android.R.styleable#TextView_editable
161 * @attr ref android.R.styleable#TextView_drawableTop
162 * @attr ref android.R.styleable#TextView_drawableBottom
163 * @attr ref android.R.styleable#TextView_drawableRight
164 * @attr ref android.R.styleable#TextView_drawableLeft
165 * @attr ref android.R.styleable#TextView_lineSpacingExtra
166 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
167 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
168 */
169@RemoteView
170public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
171    private static int PRIORITY = 100;
172
173    private ColorStateList mTextColor;
174    private int mCurTextColor;
175    private ColorStateList mHintTextColor;
176    private ColorStateList mLinkTextColor;
177    private int mCurHintTextColor;
178    private boolean mFreezesText;
179    private boolean mFrozenWithFocus;
180
181    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
182    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
183
184    private float mShadowRadius, mShadowDx, mShadowDy;
185
186    private static final int PREDRAW_NOT_REGISTERED = 0;
187    private static final int PREDRAW_PENDING = 1;
188    private static final int PREDRAW_DONE = 2;
189    private int mPreDrawState = PREDRAW_NOT_REGISTERED;
190
191    private TextUtils.TruncateAt mEllipsize = null;
192
193    // Enum for the "typeface" XML parameter.
194    // TODO: How can we get this from the XML instead of hardcoding it here?
195    private static final int SANS = 1;
196    private static final int SERIF = 2;
197    private static final int MONOSPACE = 3;
198
199    // Bitfield for the "numeric" XML parameter.
200    // TODO: How can we get this from the XML instead of hardcoding it here?
201    private static final int SIGNED = 2;
202    private static final int DECIMAL = 4;
203
204    class Drawables {
205        final Rect mCompoundRect = new Rect();
206        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight;
207        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight;
208        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight;
209        int mDrawablePadding;
210    };
211    private Drawables mDrawables;
212
213    private CharSequence mError;
214    private boolean mErrorWasChanged;
215    private PopupWindow mPopup;
216
217    private CharWrapper mCharWrapper = null;
218
219    private boolean mSelectionMoved = false;
220
221    private Marquee mMarquee;
222    private boolean mRestartMarquee;
223
224    private int mMarqueeRepeatLimit = 3;
225
226    class InputContentType {
227        String privateContentType;
228        Bundle extras;
229    }
230    InputContentType mInputContentType;
231
232    class InputMethodState {
233        Rect mCursorRectInWindow = new Rect();
234        RectF mTmpRectF = new RectF();
235        float[] mTmpOffset = new float[2];
236        ExtractedTextRequest mExtracting;
237        final ExtractedText mTmpExtracted = new ExtractedText();
238        boolean mBatchEditing;
239    }
240    InputMethodState mInputMethodState;
241
242    /*
243     * Kick-start the font cache for the zygote process (to pay the cost of
244     * initializing freetype for our default font only once).
245     */
246    static {
247        Paint p = new Paint();
248        p.setAntiAlias(true);
249        // We don't care about the result, just the side-effect of measuring.
250        p.measureText("H");
251    }
252
253    public TextView(Context context) {
254        this(context, null);
255    }
256
257    public TextView(Context context,
258                    AttributeSet attrs) {
259        this(context, attrs, com.android.internal.R.attr.textViewStyle);
260    }
261
262    public TextView(Context context,
263                    AttributeSet attrs,
264                    int defStyle) {
265        super(context, attrs, defStyle);
266        mText = "";
267
268        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
269        // If we get the paint from the skin, we should set it to left, since
270        // the layout always wants it to be left.
271        // mTextPaint.setTextAlign(Paint.Align.LEFT);
272
273        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
274
275        mMovement = getDefaultMovementMethod();
276        mTransformation = null;
277
278        TypedArray a =
279            context.obtainStyledAttributes(
280                attrs, com.android.internal.R.styleable.TextView, defStyle, 0);
281
282        int textColorHighlight = 0;
283        ColorStateList textColor = null;
284        ColorStateList textColorHint = null;
285        ColorStateList textColorLink = null;
286        int textSize = 15;
287        int typefaceIndex = -1;
288        int styleIndex = -1;
289
290        /*
291         * Look the appearance up without checking first if it exists because
292         * almost every TextView has one and it greatly simplifies the logic
293         * to be able to parse the appearance first and then let specific tags
294         * for this View override it.
295         */
296        TypedArray appearance = null;
297        int ap = a.getResourceId(com.android.internal.R.styleable.TextView_textAppearance, -1);
298        if (ap != -1) {
299            appearance = context.obtainStyledAttributes(ap,
300                                com.android.internal.R.styleable.
301                                TextAppearance);
302        }
303        if (appearance != null) {
304            int n = appearance.getIndexCount();
305            for (int i = 0; i < n; i++) {
306                int attr = appearance.getIndex(i);
307
308                switch (attr) {
309                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
310                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
311                    break;
312
313                case com.android.internal.R.styleable.TextAppearance_textColor:
314                    textColor = appearance.getColorStateList(attr);
315                    break;
316
317                case com.android.internal.R.styleable.TextAppearance_textColorHint:
318                    textColorHint = appearance.getColorStateList(attr);
319                    break;
320
321                case com.android.internal.R.styleable.TextAppearance_textColorLink:
322                    textColorLink = appearance.getColorStateList(attr);
323                    break;
324
325                case com.android.internal.R.styleable.TextAppearance_textSize:
326                    textSize = appearance.getDimensionPixelSize(attr, textSize);
327                    break;
328
329                case com.android.internal.R.styleable.TextAppearance_typeface:
330                    typefaceIndex = appearance.getInt(attr, -1);
331                    break;
332
333                case com.android.internal.R.styleable.TextAppearance_textStyle:
334                    styleIndex = appearance.getInt(attr, -1);
335                    break;
336                }
337            }
338
339            appearance.recycle();
340        }
341
342        boolean editable = getDefaultEditable();
343        CharSequence inputMethod = null;
344        int numeric = 0;
345        CharSequence digits = null;
346        boolean phone = false;
347        boolean autotext = false;
348        int autocap = -1;
349        int buffertype = 0;
350        boolean selectallonfocus = false;
351        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
352            drawableBottom = null;
353        int drawablePadding = 0;
354        int ellipsize = -1;
355        boolean singleLine = false;
356        int maxlength = -1;
357        CharSequence text = "";
358        int shadowcolor = 0;
359        float dx = 0, dy = 0, r = 0;
360        boolean password = false;
361        int contentType = EditorInfo.TYPE_NULL;
362
363        int n = a.getIndexCount();
364        for (int i = 0; i < n; i++) {
365            int attr = a.getIndex(i);
366
367            switch (attr) {
368            case com.android.internal.R.styleable.TextView_editable:
369                editable = a.getBoolean(attr, editable);
370                break;
371
372            case com.android.internal.R.styleable.TextView_inputMethod:
373                inputMethod = a.getText(attr);
374                break;
375
376            case com.android.internal.R.styleable.TextView_numeric:
377                numeric = a.getInt(attr, numeric);
378                break;
379
380            case com.android.internal.R.styleable.TextView_digits:
381                digits = a.getText(attr);
382                break;
383
384            case com.android.internal.R.styleable.TextView_phoneNumber:
385                phone = a.getBoolean(attr, phone);
386                break;
387
388            case com.android.internal.R.styleable.TextView_autoText:
389                autotext = a.getBoolean(attr, autotext);
390                break;
391
392            case com.android.internal.R.styleable.TextView_capitalize:
393                autocap = a.getInt(attr, autocap);
394                break;
395
396            case com.android.internal.R.styleable.TextView_bufferType:
397                buffertype = a.getInt(attr, buffertype);
398                break;
399
400            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
401                selectallonfocus = a.getBoolean(attr, selectallonfocus);
402                break;
403
404            case com.android.internal.R.styleable.TextView_autoLink:
405                mAutoLinkMask = a.getInt(attr, 0);
406                break;
407
408            case com.android.internal.R.styleable.TextView_linksClickable:
409                mLinksClickable = a.getBoolean(attr, true);
410                break;
411
412            case com.android.internal.R.styleable.TextView_drawableLeft:
413                drawableLeft = a.getDrawable(attr);
414                break;
415
416            case com.android.internal.R.styleable.TextView_drawableTop:
417                drawableTop = a.getDrawable(attr);
418                break;
419
420            case com.android.internal.R.styleable.TextView_drawableRight:
421                drawableRight = a.getDrawable(attr);
422                break;
423
424            case com.android.internal.R.styleable.TextView_drawableBottom:
425                drawableBottom = a.getDrawable(attr);
426                break;
427
428            case com.android.internal.R.styleable.TextView_drawablePadding:
429                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
430                break;
431
432            case com.android.internal.R.styleable.TextView_maxLines:
433                setMaxLines(a.getInt(attr, -1));
434                break;
435
436            case com.android.internal.R.styleable.TextView_maxHeight:
437                setMaxHeight(a.getDimensionPixelSize(attr, -1));
438                break;
439
440            case com.android.internal.R.styleable.TextView_lines:
441                setLines(a.getInt(attr, -1));
442                break;
443
444            case com.android.internal.R.styleable.TextView_height:
445                setHeight(a.getDimensionPixelSize(attr, -1));
446                break;
447
448            case com.android.internal.R.styleable.TextView_minLines:
449                setMinLines(a.getInt(attr, -1));
450                break;
451
452            case com.android.internal.R.styleable.TextView_minHeight:
453                setMinHeight(a.getDimensionPixelSize(attr, -1));
454                break;
455
456            case com.android.internal.R.styleable.TextView_maxEms:
457                setMaxEms(a.getInt(attr, -1));
458                break;
459
460            case com.android.internal.R.styleable.TextView_maxWidth:
461                setMaxWidth(a.getDimensionPixelSize(attr, -1));
462                break;
463
464            case com.android.internal.R.styleable.TextView_ems:
465                setEms(a.getInt(attr, -1));
466                break;
467
468            case com.android.internal.R.styleable.TextView_width:
469                setWidth(a.getDimensionPixelSize(attr, -1));
470                break;
471
472            case com.android.internal.R.styleable.TextView_minEms:
473                setMinEms(a.getInt(attr, -1));
474                break;
475
476            case com.android.internal.R.styleable.TextView_minWidth:
477                setMinWidth(a.getDimensionPixelSize(attr, -1));
478                break;
479
480            case com.android.internal.R.styleable.TextView_gravity:
481                setGravity(a.getInt(attr, -1));
482                break;
483
484            case com.android.internal.R.styleable.TextView_hint:
485                setHint(a.getText(attr));
486                break;
487
488            case com.android.internal.R.styleable.TextView_text:
489                text = a.getText(attr);
490                break;
491
492            case com.android.internal.R.styleable.TextView_scrollHorizontally:
493                if (a.getBoolean(attr, false)) {
494                    setHorizontallyScrolling(true);
495                }
496                break;
497
498            case com.android.internal.R.styleable.TextView_singleLine:
499                singleLine = a.getBoolean(attr, singleLine);
500                break;
501
502            case com.android.internal.R.styleable.TextView_ellipsize:
503                ellipsize = a.getInt(attr, ellipsize);
504                break;
505
506            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
507                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
508                break;
509
510            case com.android.internal.R.styleable.TextView_includeFontPadding:
511                if (!a.getBoolean(attr, true)) {
512                    setIncludeFontPadding(false);
513                }
514                break;
515
516            case com.android.internal.R.styleable.TextView_cursorVisible:
517                if (!a.getBoolean(attr, true)) {
518                    setCursorVisible(false);
519                }
520                break;
521
522            case com.android.internal.R.styleable.TextView_maxLength:
523                maxlength = a.getInt(attr, -1);
524                break;
525
526            case com.android.internal.R.styleable.TextView_textScaleX:
527                setTextScaleX(a.getFloat(attr, 1.0f));
528                break;
529
530            case com.android.internal.R.styleable.TextView_freezesText:
531                mFreezesText = a.getBoolean(attr, false);
532                break;
533
534            case com.android.internal.R.styleable.TextView_shadowColor:
535                shadowcolor = a.getInt(attr, 0);
536                break;
537
538            case com.android.internal.R.styleable.TextView_shadowDx:
539                dx = a.getFloat(attr, 0);
540                break;
541
542            case com.android.internal.R.styleable.TextView_shadowDy:
543                dy = a.getFloat(attr, 0);
544                break;
545
546            case com.android.internal.R.styleable.TextView_shadowRadius:
547                r = a.getFloat(attr, 0);
548                break;
549
550            case com.android.internal.R.styleable.TextView_enabled:
551                setEnabled(a.getBoolean(attr, isEnabled()));
552                break;
553
554            case com.android.internal.R.styleable.TextView_textColorHighlight:
555                textColorHighlight = a.getColor(attr, textColorHighlight);
556                break;
557
558            case com.android.internal.R.styleable.TextView_textColor:
559                textColor = a.getColorStateList(attr);
560                break;
561
562            case com.android.internal.R.styleable.TextView_textColorHint:
563                textColorHint = a.getColorStateList(attr);
564                break;
565
566            case com.android.internal.R.styleable.TextView_textColorLink:
567                textColorLink = a.getColorStateList(attr);
568                break;
569
570            case com.android.internal.R.styleable.TextView_textSize:
571                textSize = a.getDimensionPixelSize(attr, textSize);
572                break;
573
574            case com.android.internal.R.styleable.TextView_typeface:
575                typefaceIndex = a.getInt(attr, typefaceIndex);
576                break;
577
578            case com.android.internal.R.styleable.TextView_textStyle:
579                styleIndex = a.getInt(attr, styleIndex);
580                break;
581
582            case com.android.internal.R.styleable.TextView_password:
583                password = a.getBoolean(attr, password);
584                break;
585
586            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
587                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
588                break;
589
590            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
591                mSpacingMult = a.getFloat(attr, mSpacingMult);
592                break;
593
594            case com.android.internal.R.styleable.TextView_inputType:
595                contentType = a.getInt(attr, mInputType);
596                break;
597
598            case com.android.internal.R.styleable.TextView_editorPrivateContentType:
599                setPrivateContentType(a.getString(attr));
600                break;
601
602            case com.android.internal.R.styleable.TextView_editorExtras:
603                try {
604                    setInputExtras(a.getResourceId(attr, 0));
605                } catch (XmlPullParserException e) {
606                    Log.w("TextView", "Failure reading input extras", e);
607                } catch (IOException e) {
608                    Log.w("TextView", "Failure reading input extras", e);
609                }
610                break;
611            }
612        }
613        a.recycle();
614
615        BufferType bufferType = BufferType.EDITABLE;
616
617        if ((contentType&(EditorInfo.TYPE_MASK_CLASS
618                |EditorInfo.TYPE_MASK_VARIATION))
619                == (EditorInfo.TYPE_CLASS_TEXT
620                        |EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
621            password = true;
622        }
623
624        if (inputMethod != null) {
625            Class c;
626
627            try {
628                c = Class.forName(inputMethod.toString());
629            } catch (ClassNotFoundException ex) {
630                throw new RuntimeException(ex);
631            }
632
633            try {
634                mInput = (KeyListener) c.newInstance();
635            } catch (InstantiationException ex) {
636                throw new RuntimeException(ex);
637            } catch (IllegalAccessException ex) {
638                throw new RuntimeException(ex);
639            }
640            try {
641                mInputType = contentType != EditorInfo.TYPE_NULL
642                        ? contentType
643                        : mInput.getInputType();
644            } catch (IncompatibleClassChangeError e) {
645                mInputType = EditorInfo.TYPE_CLASS_TEXT;
646            }
647        } else if (digits != null) {
648            mInput = DigitsKeyListener.getInstance(digits.toString());
649            mInputType = contentType;
650        } else if (contentType != EditorInfo.TYPE_NULL) {
651            setInputType(contentType, true);
652            singleLine = (contentType&(EditorInfo.TYPE_MASK_CLASS
653                            | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) !=
654                    (EditorInfo.TYPE_CLASS_TEXT
655                            | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
656        } else if (phone) {
657            mInput = DialerKeyListener.getInstance();
658            contentType = EditorInfo.TYPE_CLASS_PHONE;
659        } else if (numeric != 0) {
660            mInput = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
661                                                   (numeric & DECIMAL) != 0);
662            contentType = EditorInfo.TYPE_CLASS_NUMBER;
663            if ((numeric & SIGNED) != 0) {
664                contentType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
665            }
666            if ((numeric & DECIMAL) != 0) {
667                contentType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
668            }
669            mInputType = contentType;
670        } else if (autotext || autocap != -1) {
671            TextKeyListener.Capitalize cap;
672
673            contentType = EditorInfo.TYPE_CLASS_TEXT;
674            if (!singleLine) {
675                contentType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
676            }
677
678            switch (autocap) {
679            case 1:
680                cap = TextKeyListener.Capitalize.SENTENCES;
681                contentType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
682                break;
683
684            case 2:
685                cap = TextKeyListener.Capitalize.WORDS;
686                contentType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
687                break;
688
689            case 3:
690                cap = TextKeyListener.Capitalize.CHARACTERS;
691                contentType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
692                break;
693
694            default:
695                cap = TextKeyListener.Capitalize.NONE;
696                break;
697            }
698
699            mInput = TextKeyListener.getInstance(autotext, cap);
700            mInputType = contentType;
701        } else if (editable) {
702            mInput = TextKeyListener.getInstance();
703            mInputType = EditorInfo.TYPE_CLASS_TEXT;
704        } else {
705            mInput = null;
706
707            switch (buffertype) {
708                case 0:
709                    bufferType = BufferType.NORMAL;
710                    break;
711                case 1:
712                    bufferType = BufferType.SPANNABLE;
713                    break;
714                case 2:
715                    bufferType = BufferType.EDITABLE;
716                    break;
717            }
718        }
719
720        if (password && (mInputType&EditorInfo.TYPE_MASK_CLASS)
721                == EditorInfo.TYPE_CLASS_TEXT) {
722            mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
723                | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD;
724        }
725
726        if (selectallonfocus) {
727            mSelectAllOnFocus = true;
728
729            if (bufferType == BufferType.NORMAL)
730                bufferType = BufferType.SPANNABLE;
731        }
732
733        setCompoundDrawablesWithIntrinsicBounds(
734            drawableLeft, drawableTop, drawableRight, drawableBottom);
735        setCompoundDrawablePadding(drawablePadding);
736
737        if (singleLine) {
738            setSingleLine();
739
740            if (mInput == null && ellipsize < 0) {
741                ellipsize = 3; // END
742            }
743        }
744
745        switch (ellipsize) {
746            case 1:
747                setEllipsize(TextUtils.TruncateAt.START);
748                break;
749            case 2:
750                setEllipsize(TextUtils.TruncateAt.MIDDLE);
751                break;
752            case 3:
753                setEllipsize(TextUtils.TruncateAt.END);
754                break;
755            case 4:
756                setHorizontalFadingEdgeEnabled(true);
757                setEllipsize(TextUtils.TruncateAt.MARQUEE);
758                break;
759        }
760
761        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
762        setHintTextColor(textColorHint);
763        setLinkTextColor(textColorLink);
764        if (textColorHighlight != 0) {
765            setHighlightColor(textColorHighlight);
766        }
767        setRawTextSize(textSize);
768
769        if (password) {
770            setTransformationMethod(PasswordTransformationMethod.getInstance());
771            typefaceIndex = MONOSPACE;
772        }
773
774        setTypefaceByIndex(typefaceIndex, styleIndex);
775
776        if (shadowcolor != 0) {
777            setShadowLayer(r, dx, dy, shadowcolor);
778        }
779
780        if (maxlength >= 0) {
781            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
782        } else {
783            setFilters(NO_FILTERS);
784        }
785
786        setText(text, bufferType);
787
788        /*
789         * Views are not normally focusable unless specified to be.
790         * However, TextViews that have input or movement methods *are*
791         * focusable by default.
792         */
793        a = context.obtainStyledAttributes(attrs,
794                                           com.android.internal.R.styleable.View,
795                                           defStyle, 0);
796
797        boolean focusable = mMovement != null || mInput != null;
798        boolean clickable = focusable;
799        boolean longClickable = focusable;
800
801        n = a.getIndexCount();
802        for (int i = 0; i < n; i++) {
803            int attr = a.getIndex(i);
804
805            switch (attr) {
806            case com.android.internal.R.styleable.View_focusable:
807                focusable = a.getBoolean(attr, focusable);
808                break;
809
810            case com.android.internal.R.styleable.View_clickable:
811                clickable = a.getBoolean(attr, clickable);
812                break;
813
814            case com.android.internal.R.styleable.View_longClickable:
815                longClickable = a.getBoolean(attr, longClickable);
816                break;
817            }
818        }
819        a.recycle();
820
821        setFocusable(focusable);
822        setClickable(clickable);
823        setLongClickable(longClickable);
824    }
825
826    private void setTypefaceByIndex(int typefaceIndex, int styleIndex) {
827        Typeface tf = null;
828        switch (typefaceIndex) {
829            case SANS:
830                tf = Typeface.SANS_SERIF;
831                break;
832
833            case SERIF:
834                tf = Typeface.SERIF;
835                break;
836
837            case MONOSPACE:
838                tf = Typeface.MONOSPACE;
839                break;
840        }
841
842        setTypeface(tf, styleIndex);
843    }
844
845    /**
846     * Sets the typeface and style in which the text should be displayed,
847     * and turns on the fake bold and italic bits in the Paint if the
848     * Typeface that you provided does not have all the bits in the
849     * style that you specified.
850     *
851     * @attr ref android.R.styleable#TextView_typeface
852     * @attr ref android.R.styleable#TextView_textStyle
853     */
854    public void setTypeface(Typeface tf, int style) {
855        if (style > 0) {
856            if (tf == null) {
857                tf = Typeface.defaultFromStyle(style);
858            } else {
859                tf = Typeface.create(tf, style);
860            }
861
862            setTypeface(tf);
863            // now compute what (if any) algorithmic styling is needed
864            int typefaceStyle = tf != null ? tf.getStyle() : 0;
865            int need = style & ~typefaceStyle;
866            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
867            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
868        } else {
869            mTextPaint.setFakeBoldText(false);
870            mTextPaint.setTextSkewX(0);
871            setTypeface(tf);
872        }
873    }
874
875    /**
876     * Subclasses override this to specify that they have a KeyListener
877     * by default even if not specifically called for in the XML options.
878     */
879    protected boolean getDefaultEditable() {
880        return false;
881    }
882
883    /**
884     * Subclasses override this to specify a default movement method.
885     */
886    protected MovementMethod getDefaultMovementMethod() {
887        return null;
888    }
889
890    /**
891     * Return the text the TextView is displaying. If setText() was called with
892     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
893     * the return value from this method to Spannable or Editable, respectively.
894     *
895     * Note: The content of the return value should not be modified. If you want
896     * a modifiable one, you should make your own copy first.
897     */
898    @ViewDebug.CapturedViewProperty
899    public CharSequence getText() {
900        return mText;
901    }
902
903    /**
904     * Returns the length, in characters, of the text managed by this TextView
905     */
906    public int length() {
907        return mText.length();
908    }
909
910    /**
911     * Return the text the TextView is displaying as an Editable object.  If
912     * the text is not editable, null is returned.
913     *
914     * @see #getText
915     */
916    public Editable getEditableText() {
917        return (mText instanceof Editable) ? (Editable)mText : null;
918    }
919
920    /**
921     * @return the height of one standard line in pixels.  Note that markup
922     * within the text can cause individual lines to be taller or shorter
923     * than this height, and the layout may contain additional first-
924     * or last-line padding.
925     */
926    public int getLineHeight() {
927        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult
928                          + mSpacingAdd);
929    }
930
931    /**
932     * @return the Layout that is currently being used to display the text.
933     * This can be null if the text or width has recently changes.
934     */
935    public final Layout getLayout() {
936        return mLayout;
937    }
938
939    /**
940     * @return the current key listener for this TextView.
941     * This will frequently be null for non-EditText TextViews.
942     */
943    public final KeyListener getKeyListener() {
944        return mInput;
945    }
946
947    /**
948     * Sets the key listener to be used with this TextView.  This can be null
949     * to disallow user input.  Note that this method has significant and
950     * subtle interactions with soft keyboards and other input method:
951     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
952     * for important details.  Calling this method will replace the current
953     * content type of the text view with the content type returned by the
954     * key listener.
955     * <p>
956     * Be warned that if you want a TextView with a key listener or movement
957     * method not to be focusable, or if you want a TextView without a
958     * key listener or movement method to be focusable, you must call
959     * {@link #setFocusable} again after calling this to get the focusability
960     * back the way you want it.
961     *
962     * @attr ref android.R.styleable#TextView_numeric
963     * @attr ref android.R.styleable#TextView_digits
964     * @attr ref android.R.styleable#TextView_phoneNumber
965     * @attr ref android.R.styleable#TextView_inputMethod
966     * @attr ref android.R.styleable#TextView_capitalize
967     * @attr ref android.R.styleable#TextView_autoText
968     */
969    public void setKeyListener(KeyListener input) {
970        setKeyListenerOnly(input);
971        fixFocusableAndClickableSettings();
972
973        if (input != null) {
974            try {
975                mInputType = mInput.getInputType();
976            } catch (IncompatibleClassChangeError e) {
977                mInputType = EditorInfo.TYPE_CLASS_TEXT;
978            }
979            if ((mInputType&EditorInfo.TYPE_MASK_CLASS)
980                    == EditorInfo.TYPE_CLASS_TEXT) {
981                if (mSingleLine) {
982                    mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
983                } else {
984                    mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
985                }
986            }
987        } else {
988            mInputType = EditorInfo.TYPE_NULL;
989        }
990
991        InputMethodManager imm = InputMethodManager.peekInstance();
992        if (imm != null) imm.restartInput(this);
993    }
994
995    private void setKeyListenerOnly(KeyListener input) {
996        mInput = input;
997        if (mInput != null && !(mText instanceof Editable))
998            setText(mText);
999
1000        setFilters((Editable) mText, mFilters);
1001    }
1002
1003    /**
1004     * @return the movement method being used for this TextView.
1005     * This will frequently be null for non-EditText TextViews.
1006     */
1007    public final MovementMethod getMovementMethod() {
1008        return mMovement;
1009    }
1010
1011    /**
1012     * Sets the movement method (arrow key handler) to be used for
1013     * this TextView.  This can be null to disallow using the arrow keys
1014     * to move the cursor or scroll the view.
1015     * <p>
1016     * Be warned that if you want a TextView with a key listener or movement
1017     * method not to be focusable, or if you want a TextView without a
1018     * key listener or movement method to be focusable, you must call
1019     * {@link #setFocusable} again after calling this to get the focusability
1020     * back the way you want it.
1021     */
1022    public final void setMovementMethod(MovementMethod movement) {
1023        mMovement = movement;
1024
1025        if (mMovement != null && !(mText instanceof Spannable))
1026            setText(mText);
1027
1028        fixFocusableAndClickableSettings();
1029    }
1030
1031    private void fixFocusableAndClickableSettings() {
1032        if ((mMovement != null) || mInput != null) {
1033            setFocusable(true);
1034            setClickable(true);
1035            setLongClickable(true);
1036        } else {
1037            setFocusable(false);
1038            setClickable(false);
1039            setLongClickable(false);
1040        }
1041    }
1042
1043    /**
1044     * @return the current transformation method for this TextView.
1045     * This will frequently be null except for single-line and password
1046     * fields.
1047     */
1048    public final TransformationMethod getTransformationMethod() {
1049        return mTransformation;
1050    }
1051
1052    /**
1053     * Sets the transformation that is applied to the text that this
1054     * TextView is displaying.
1055     *
1056     * @attr ref android.R.styleable#TextView_password
1057     * @attr ref android.R.styleable#TextView_singleLine
1058     */
1059    public final void setTransformationMethod(TransformationMethod method) {
1060        if (mTransformation != null) {
1061            if (mText instanceof Spannable) {
1062                ((Spannable) mText).removeSpan(mTransformation);
1063            }
1064        }
1065
1066        mTransformation = method;
1067
1068        setText(mText);
1069    }
1070
1071    /**
1072     * Returns the top padding of the view, plus space for the top
1073     * Drawable if any.
1074     */
1075    public int getCompoundPaddingTop() {
1076        final Drawables dr = mDrawables;
1077        if (dr == null || dr.mDrawableTop == null) {
1078            return mPaddingTop;
1079        } else {
1080            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1081        }
1082    }
1083
1084    /**
1085     * Returns the bottom padding of the view, plus space for the bottom
1086     * Drawable if any.
1087     */
1088    public int getCompoundPaddingBottom() {
1089        final Drawables dr = mDrawables;
1090        if (dr == null || dr.mDrawableBottom == null) {
1091            return mPaddingBottom;
1092        } else {
1093            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1094        }
1095    }
1096
1097    /**
1098     * Returns the left padding of the view, plus space for the left
1099     * Drawable if any.
1100     */
1101    public int getCompoundPaddingLeft() {
1102        final Drawables dr = mDrawables;
1103        if (dr == null || dr.mDrawableLeft == null) {
1104            return mPaddingLeft;
1105        } else {
1106            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1107        }
1108    }
1109
1110    /**
1111     * Returns the right padding of the view, plus space for the right
1112     * Drawable if any.
1113     */
1114    public int getCompoundPaddingRight() {
1115        final Drawables dr = mDrawables;
1116        if (dr == null || dr.mDrawableRight == null) {
1117            return mPaddingRight;
1118        } else {
1119            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1120        }
1121    }
1122
1123    /**
1124     * Returns the extended top padding of the view, including both the
1125     * top Drawable if any and any extra space to keep more than maxLines
1126     * of text from showing.  It is only valid to call this after measuring.
1127     */
1128    public int getExtendedPaddingTop() {
1129        if (mMaxMode != LINES) {
1130            return getCompoundPaddingTop();
1131        }
1132
1133        if (mLayout.getLineCount() <= mMaximum) {
1134            return getCompoundPaddingTop();
1135        }
1136
1137        int top = getCompoundPaddingTop();
1138        int bottom = getCompoundPaddingBottom();
1139        int viewht = getHeight() - top - bottom;
1140        int layoutht = mLayout.getLineTop(mMaximum);
1141
1142        if (layoutht >= viewht) {
1143            return top;
1144        }
1145
1146        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1147        if (gravity == Gravity.TOP) {
1148            return top;
1149        } else if (gravity == Gravity.BOTTOM) {
1150            return top + viewht - layoutht;
1151        } else { // (gravity == Gravity.CENTER_VERTICAL)
1152            return top + (viewht - layoutht) / 2;
1153        }
1154    }
1155
1156    /**
1157     * Returns the extended bottom padding of the view, including both the
1158     * bottom Drawable if any and any extra space to keep more than maxLines
1159     * of text from showing.  It is only valid to call this after measuring.
1160     */
1161    public int getExtendedPaddingBottom() {
1162        if (mMaxMode != LINES) {
1163            return getCompoundPaddingBottom();
1164        }
1165
1166        if (mLayout.getLineCount() <= mMaximum) {
1167            return getCompoundPaddingBottom();
1168        }
1169
1170        int top = getCompoundPaddingTop();
1171        int bottom = getCompoundPaddingBottom();
1172        int viewht = getHeight() - top - bottom;
1173        int layoutht = mLayout.getLineTop(mMaximum);
1174
1175        if (layoutht >= viewht) {
1176            return bottom;
1177        }
1178
1179        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1180        if (gravity == Gravity.TOP) {
1181            return bottom + viewht - layoutht;
1182        } else if (gravity == Gravity.BOTTOM) {
1183            return bottom;
1184        } else { // (gravity == Gravity.CENTER_VERTICAL)
1185            return bottom + (viewht - layoutht) / 2;
1186        }
1187    }
1188
1189    /**
1190     * Returns the total left padding of the view, including the left
1191     * Drawable if any.
1192     */
1193    public int getTotalPaddingLeft() {
1194        return getCompoundPaddingLeft();
1195    }
1196
1197    /**
1198     * Returns the total right padding of the view, including the right
1199     * Drawable if any.
1200     */
1201    public int getTotalPaddingRight() {
1202        return getCompoundPaddingRight();
1203    }
1204
1205    /**
1206     * Returns the total top padding of the view, including the top
1207     * Drawable if any, the extra space to keep more than maxLines
1208     * from showing, and the vertical offset for gravity, if any.
1209     */
1210    public int getTotalPaddingTop() {
1211        return getExtendedPaddingTop() + getVerticalOffset(true);
1212    }
1213
1214    /**
1215     * Returns the total bottom padding of the view, including the bottom
1216     * Drawable if any, the extra space to keep more than maxLines
1217     * from showing, and the vertical offset for gravity, if any.
1218     */
1219    public int getTotalPaddingBottom() {
1220        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1221    }
1222
1223    /**
1224     * Sets the Drawables (if any) to appear to the left of, above,
1225     * to the right of, and below the text.  Use null if you do not
1226     * want a Drawable there.  The Drawables must already have had
1227     * {@link Drawable#setBounds} called.
1228     *
1229     * @attr ref android.R.styleable#TextView_drawableLeft
1230     * @attr ref android.R.styleable#TextView_drawableTop
1231     * @attr ref android.R.styleable#TextView_drawableRight
1232     * @attr ref android.R.styleable#TextView_drawableBottom
1233     */
1234    public void setCompoundDrawables(Drawable left, Drawable top,
1235                                     Drawable right, Drawable bottom) {
1236        Drawables dr = mDrawables;
1237
1238        final boolean drawables = left != null || top != null
1239                || right != null || bottom != null;
1240
1241        if (!drawables) {
1242            // Clearing drawables...  can we free the data structure?
1243            if (dr != null) {
1244                if (dr.mDrawablePadding == 0) {
1245                    mDrawables = null;
1246                } else {
1247                    // We need to retain the last set padding, so just clear
1248                    // out all of the fields in the existing structure.
1249                    dr.mDrawableLeft = null;
1250                    dr.mDrawableTop = null;
1251                    dr.mDrawableRight = null;
1252                    dr.mDrawableBottom = null;
1253                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1254                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1255                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1256                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1257                }
1258            }
1259        } else {
1260            if (dr == null) {
1261                mDrawables = dr = new Drawables();
1262            }
1263
1264            dr.mDrawableLeft = left;
1265            dr.mDrawableTop = top;
1266            dr.mDrawableRight = right;
1267            dr.mDrawableBottom = bottom;
1268
1269            final Rect compoundRect = dr.mCompoundRect;
1270            int[] state = null;
1271
1272            state = getDrawableState();
1273
1274            if (left != null) {
1275                left.setState(state);
1276                left.copyBounds(compoundRect);
1277                dr.mDrawableSizeLeft = compoundRect.width();
1278                dr.mDrawableHeightLeft = compoundRect.height();
1279            } else {
1280                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1281            }
1282
1283            if (right != null) {
1284                right.setState(state);
1285                right.copyBounds(compoundRect);
1286                dr.mDrawableSizeRight = compoundRect.width();
1287                dr.mDrawableHeightRight = compoundRect.height();
1288            } else {
1289                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1290            }
1291
1292            if (top != null) {
1293                top.setState(state);
1294                top.copyBounds(compoundRect);
1295                dr.mDrawableSizeTop = compoundRect.height();
1296                dr.mDrawableWidthTop = compoundRect.width();
1297            } else {
1298                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1299            }
1300
1301            if (bottom != null) {
1302                bottom.setState(state);
1303                bottom.copyBounds(compoundRect);
1304                dr.mDrawableSizeBottom = compoundRect.height();
1305                dr.mDrawableWidthBottom = compoundRect.width();
1306            } else {
1307                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1308            }
1309        }
1310
1311        invalidate();
1312        requestLayout();
1313    }
1314
1315    /**
1316     * Sets the Drawables (if any) to appear to the left of, above,
1317     * to the right of, and below the text.  Use 0 if you do not
1318     * want a Drawable there. The Drawables' bounds will be set to
1319     * their intrinsic bounds.
1320     *
1321     * @param left Resource identifier of the left Drawable.
1322     * @param top Resource identifier of the top Drawable.
1323     * @param right Resource identifier of the right Drawable.
1324     * @param bottom Resource identifier of the bottom Drawable.
1325     *
1326     * @attr ref android.R.styleable#TextView_drawableLeft
1327     * @attr ref android.R.styleable#TextView_drawableTop
1328     * @attr ref android.R.styleable#TextView_drawableRight
1329     * @attr ref android.R.styleable#TextView_drawableBottom
1330     */
1331    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1332        final Resources resources = getContext().getResources();
1333        setCompoundDrawables(left != 0 ? resources.getDrawable(left) : null,
1334                top != 0 ? resources.getDrawable(top) : null,
1335                right != 0 ? resources.getDrawable(right) : null,
1336                bottom != 0 ? resources.getDrawable(bottom) : null);
1337    }
1338
1339    /**
1340     * Sets the Drawables (if any) to appear to the left of, above,
1341     * to the right of, and below the text.  Use null if you do not
1342     * want a Drawable there. The Drawables' bounds will be set to
1343     * their intrinsic bounds.
1344     *
1345     * @attr ref android.R.styleable#TextView_drawableLeft
1346     * @attr ref android.R.styleable#TextView_drawableTop
1347     * @attr ref android.R.styleable#TextView_drawableRight
1348     * @attr ref android.R.styleable#TextView_drawableBottom
1349     */
1350    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1351            Drawable right, Drawable bottom) {
1352
1353        if (left != null) {
1354            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1355        }
1356        if (right != null) {
1357            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1358        }
1359        if (top != null) {
1360            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1361        }
1362        if (bottom != null) {
1363            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
1364        }
1365        setCompoundDrawables(left, top, right, bottom);
1366    }
1367
1368    /**
1369     * Returns drawables for the left, top, right, and bottom borders.
1370     */
1371    public Drawable[] getCompoundDrawables() {
1372        final Drawables dr = mDrawables;
1373        if (dr != null) {
1374            return new Drawable[] {
1375                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
1376            };
1377        } else {
1378            return new Drawable[] { null, null, null, null };
1379        }
1380    }
1381
1382    /**
1383     * Sets the size of the padding between the compound drawables and
1384     * the text.
1385     *
1386     * @attr ref android.R.styleable#TextView_drawablePadding
1387     */
1388    public void setCompoundDrawablePadding(int pad) {
1389        Drawables dr = mDrawables;
1390        if (pad == 0) {
1391            if (dr != null) {
1392                dr.mDrawablePadding = pad;
1393            }
1394        } else {
1395            if (dr == null) {
1396                mDrawables = dr = new Drawables();
1397            }
1398            dr.mDrawablePadding = pad;
1399        }
1400
1401        invalidate();
1402        requestLayout();
1403    }
1404
1405    /**
1406     * Returns the padding between the compound drawables and the text.
1407     */
1408    public int getCompoundDrawablePadding() {
1409        final Drawables dr = mDrawables;
1410        return dr != null ? dr.mDrawablePadding : 0;
1411    }
1412
1413    @Override
1414    public void setPadding(int left, int top, int right, int bottom) {
1415        if (left != getPaddingLeft() ||
1416            right != getPaddingRight() ||
1417            top != getPaddingTop() ||
1418            bottom != getPaddingBottom()) {
1419            nullLayouts();
1420        }
1421
1422        // the super call will requestLayout()
1423        super.setPadding(left, top, right, bottom);
1424        invalidate();
1425    }
1426
1427    /**
1428     * Gets the autolink mask of the text.  See {@link
1429     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1430     * possible values.
1431     *
1432     * @attr ref android.R.styleable#TextView_autoLink
1433     */
1434    public final int getAutoLinkMask() {
1435        return mAutoLinkMask;
1436    }
1437
1438    /**
1439     * Sets the text color, size, style, hint color, and highlight color
1440     * from the specified TextAppearance resource.
1441     */
1442    public void setTextAppearance(Context context, int resid) {
1443        TypedArray appearance =
1444            context.obtainStyledAttributes(resid,
1445                                           com.android.internal.R.styleable.TextAppearance);
1446
1447        int color;
1448        ColorStateList colors;
1449        int ts;
1450
1451        color = appearance.getColor(com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
1452        if (color != 0) {
1453            setHighlightColor(color);
1454        }
1455
1456        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1457                                              TextAppearance_textColor);
1458        if (colors != null) {
1459            setTextColor(colors);
1460        }
1461
1462        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
1463                                              TextAppearance_textSize, 0);
1464        if (ts != 0) {
1465            setRawTextSize(ts);
1466        }
1467
1468        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1469                                              TextAppearance_textColorHint);
1470        if (colors != null) {
1471            setHintTextColor(colors);
1472        }
1473
1474        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1475                                              TextAppearance_textColorLink);
1476        if (colors != null) {
1477            setLinkTextColor(colors);
1478        }
1479
1480        int typefaceIndex, styleIndex;
1481
1482        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
1483                                          TextAppearance_typeface, -1);
1484        styleIndex = appearance.getInt(com.android.internal.R.styleable.
1485                                       TextAppearance_textStyle, -1);
1486
1487        setTypefaceByIndex(typefaceIndex, styleIndex);
1488        appearance.recycle();
1489    }
1490
1491    /**
1492     * @return the size (in pixels) of the default text size in this TextView.
1493     */
1494    public float getTextSize() {
1495        return mTextPaint.getTextSize();
1496    }
1497
1498    /**
1499     * Set the default text size to the given value, interpreted as "scaled
1500     * pixel" units.  This size is adjusted based on the current density and
1501     * user font size preference.
1502     *
1503     * @param size The scaled pixel size.
1504     *
1505     * @attr ref android.R.styleable#TextView_textSize
1506     */
1507    public void setTextSize(float size) {
1508        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
1509    }
1510
1511    /**
1512     * Set the default text size to a given unit and value.  See {@link
1513     * TypedValue} for the possible dimension units.
1514     *
1515     * @param unit The desired dimension unit.
1516     * @param size The desired size in the given units.
1517     *
1518     * @attr ref android.R.styleable#TextView_textSize
1519     */
1520    public void setTextSize(int unit, float size) {
1521        Context c = getContext();
1522        Resources r;
1523
1524        if (c == null)
1525            r = Resources.getSystem();
1526        else
1527            r = c.getResources();
1528
1529        setRawTextSize(TypedValue.applyDimension(
1530            unit, size, r.getDisplayMetrics()));
1531    }
1532
1533    private void setRawTextSize(float size) {
1534        if (size != mTextPaint.getTextSize()) {
1535            mTextPaint.setTextSize(size);
1536
1537            if (mLayout != null) {
1538                nullLayouts();
1539                requestLayout();
1540                invalidate();
1541            }
1542        }
1543    }
1544
1545    /**
1546     * @return the extent by which text is currently being stretched
1547     * horizontally.  This will usually be 1.
1548     */
1549    public float getTextScaleX() {
1550        return mTextPaint.getTextScaleX();
1551    }
1552
1553    /**
1554     * Sets the extent by which text should be stretched horizontally.
1555     *
1556     * @attr ref android.R.styleable#TextView_textScaleX
1557     */
1558    public void setTextScaleX(float size) {
1559        if (size != mTextPaint.getTextScaleX()) {
1560            mTextPaint.setTextScaleX(size);
1561
1562            if (mLayout != null) {
1563                nullLayouts();
1564                requestLayout();
1565                invalidate();
1566            }
1567        }
1568    }
1569
1570    /**
1571     * Sets the typeface and style in which the text should be displayed.
1572     * Note that not all Typeface families actually have bold and italic
1573     * variants, so you may need to use
1574     * {@link #setTypeface(Typeface, int)} to get the appearance
1575     * that you actually want.
1576     *
1577     * @attr ref android.R.styleable#TextView_typeface
1578     * @attr ref android.R.styleable#TextView_textStyle
1579     */
1580    public void setTypeface(Typeface tf) {
1581        if (mTextPaint.getTypeface() != tf) {
1582            mTextPaint.setTypeface(tf);
1583
1584            if (mLayout != null) {
1585                nullLayouts();
1586                requestLayout();
1587                invalidate();
1588            }
1589        }
1590    }
1591
1592    /**
1593     * @return the current typeface and style in which the text is being
1594     * displayed.
1595     */
1596    public Typeface getTypeface() {
1597        return mTextPaint.getTypeface();
1598    }
1599
1600    /**
1601     * Sets the text color for all the states (normal, selected,
1602     * focused) to be this color.
1603     *
1604     * @attr ref android.R.styleable#TextView_textColor
1605     */
1606    public void setTextColor(int color) {
1607        mTextColor = ColorStateList.valueOf(color);
1608        updateTextColors();
1609    }
1610
1611    /**
1612     * Sets the text color.
1613     *
1614     * @attr ref android.R.styleable#TextView_textColor
1615     */
1616    public void setTextColor(ColorStateList colors) {
1617        if (colors == null) {
1618            throw new NullPointerException();
1619        }
1620
1621        mTextColor = colors;
1622        updateTextColors();
1623    }
1624
1625    /**
1626     * Return the set of text colors.
1627     *
1628     * @return Returns the set of text colors.
1629     */
1630    public final ColorStateList getTextColors() {
1631        return mTextColor;
1632    }
1633
1634    /**
1635     * <p>Return the current color selected for normal text.</p>
1636     *
1637     * @return Returns the current text color.
1638     */
1639    public final int getCurrentTextColor() {
1640        return mCurTextColor;
1641    }
1642
1643    /**
1644     * Sets the color used to display the selection highlight.
1645     *
1646     * @attr ref android.R.styleable#TextView_textColorHighlight
1647     */
1648    public void setHighlightColor(int color) {
1649        if (mHighlightColor != color) {
1650            mHighlightColor = color;
1651            invalidate();
1652        }
1653    }
1654
1655    /**
1656     * Gives the text a shadow of the specified radius and color, the specified
1657     * distance from its normal position.
1658     *
1659     * @attr ref android.R.styleable#TextView_shadowColor
1660     * @attr ref android.R.styleable#TextView_shadowDx
1661     * @attr ref android.R.styleable#TextView_shadowDy
1662     * @attr ref android.R.styleable#TextView_shadowRadius
1663     */
1664    public void setShadowLayer(float radius, float dx, float dy, int color) {
1665        mTextPaint.setShadowLayer(radius, dx, dy, color);
1666
1667        mShadowRadius = radius;
1668        mShadowDx = dx;
1669        mShadowDy = dy;
1670
1671        invalidate();
1672    }
1673
1674    /**
1675     * @return the base paint used for the text.  Please use this only to
1676     * consult the Paint's properties and not to change them.
1677     */
1678    public TextPaint getPaint() {
1679        return mTextPaint;
1680    }
1681
1682    /**
1683     * Sets the autolink mask of the text.  See {@link
1684     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1685     * possible values.
1686     *
1687     * @attr ref android.R.styleable#TextView_autoLink
1688     */
1689    public final void setAutoLinkMask(int mask) {
1690        mAutoLinkMask = mask;
1691    }
1692
1693    /**
1694     * Sets whether the movement method will automatically be set to
1695     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1696     * set to nonzero and links are detected in {@link #setText}.
1697     * The default is true.
1698     *
1699     * @attr ref android.R.styleable#TextView_linksClickable
1700     */
1701    public final void setLinksClickable(boolean whether) {
1702        mLinksClickable = whether;
1703    }
1704
1705    /**
1706     * Returns whether the movement method will automatically be set to
1707     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1708     * set to nonzero and links are detected in {@link #setText}.
1709     * The default is true.
1710     *
1711     * @attr ref android.R.styleable#TextView_linksClickable
1712     */
1713    public final boolean getLinksClickable() {
1714        return mLinksClickable;
1715    }
1716
1717    /**
1718     * Returns the list of URLSpans attached to the text
1719     * (by {@link Linkify} or otherwise) if any.  You can call
1720     * {@link URLSpan#getURL} on them to find where they link to
1721     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
1722     * to find the region of the text they are attached to.
1723     */
1724    public URLSpan[] getUrls() {
1725        if (mText instanceof Spanned) {
1726            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
1727        } else {
1728            return new URLSpan[0];
1729        }
1730    }
1731
1732    /**
1733     * Sets the color of the hint text.
1734     *
1735     * @attr ref android.R.styleable#TextView_textColorHint
1736     */
1737    public final void setHintTextColor(int color) {
1738        mHintTextColor = ColorStateList.valueOf(color);
1739        updateTextColors();
1740    }
1741
1742    /**
1743     * Sets the color of the hint text.
1744     *
1745     * @attr ref android.R.styleable#TextView_textColorHint
1746     */
1747    public final void setHintTextColor(ColorStateList colors) {
1748        mHintTextColor = colors;
1749        updateTextColors();
1750    }
1751
1752    /**
1753     * <p>Return the color used to paint the hint text.</p>
1754     *
1755     * @return Returns the list of hint text colors.
1756     */
1757    public final ColorStateList getHintTextColors() {
1758        return mHintTextColor;
1759    }
1760
1761    /**
1762     * <p>Return the current color selected to paint the hint text.</p>
1763     *
1764     * @return Returns the current hint text color.
1765     */
1766    public final int getCurrentHintTextColor() {
1767        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
1768    }
1769
1770    /**
1771     * Sets the color of links in the text.
1772     *
1773     * @attr ref android.R.styleable#TextView_textColorLink
1774     */
1775    public final void setLinkTextColor(int color) {
1776        mLinkTextColor = ColorStateList.valueOf(color);
1777        updateTextColors();
1778    }
1779
1780    /**
1781     * Sets the color of links in the text.
1782     *
1783     * @attr ref android.R.styleable#TextView_textColorLink
1784     */
1785    public final void setLinkTextColor(ColorStateList colors) {
1786        mLinkTextColor = colors;
1787        updateTextColors();
1788    }
1789
1790    /**
1791     * <p>Returns the color used to paint links in the text.</p>
1792     *
1793     * @return Returns the list of link text colors.
1794     */
1795    public final ColorStateList getLinkTextColors() {
1796        return mLinkTextColor;
1797    }
1798
1799    /**
1800     * Sets the horizontal alignment of the text and the
1801     * vertical gravity that will be used when there is extra space
1802     * in the TextView beyond what is required for the text itself.
1803     *
1804     * @see android.view.Gravity
1805     * @attr ref android.R.styleable#TextView_gravity
1806     */
1807    public void setGravity(int gravity) {
1808        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == 0) {
1809            gravity |= Gravity.LEFT;
1810        }
1811        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
1812            gravity |= Gravity.TOP;
1813        }
1814
1815        boolean newLayout = false;
1816
1817        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) !=
1818            (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK)) {
1819            newLayout = true;
1820        }
1821
1822        if (gravity != mGravity) {
1823            invalidate();
1824        }
1825
1826        mGravity = gravity;
1827
1828        if (mLayout != null && newLayout) {
1829            // XXX this is heavy-handed because no actual content changes.
1830            int want = mLayout.getWidth();
1831            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
1832
1833            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
1834                          mRight - mLeft - getCompoundPaddingLeft() -
1835                          getCompoundPaddingRight(), true);
1836        }
1837    }
1838
1839    /**
1840     * Returns the horizontal and vertical alignment of this TextView.
1841     *
1842     * @see android.view.Gravity
1843     * @attr ref android.R.styleable#TextView_gravity
1844     */
1845    public int getGravity() {
1846        return mGravity;
1847    }
1848
1849    /**
1850     * @return the flags on the Paint being used to display the text.
1851     * @see Paint#getFlags
1852     */
1853    public int getPaintFlags() {
1854        return mTextPaint.getFlags();
1855    }
1856
1857    /**
1858     * Sets flags on the Paint being used to display the text and
1859     * reflows the text if they are different from the old flags.
1860     * @see Paint#setFlags
1861     */
1862    public void setPaintFlags(int flags) {
1863        if (mTextPaint.getFlags() != flags) {
1864            mTextPaint.setFlags(flags);
1865
1866            if (mLayout != null) {
1867                nullLayouts();
1868                requestLayout();
1869                invalidate();
1870            }
1871        }
1872    }
1873
1874    /**
1875     * Sets whether the text should be allowed to be wider than the
1876     * View is.  If false, it will be wrapped to the width of the View.
1877     *
1878     * @attr ref android.R.styleable#TextView_scrollHorizontally
1879     */
1880    public void setHorizontallyScrolling(boolean whether) {
1881        mHorizontallyScrolling = whether;
1882
1883        if (mLayout != null) {
1884            nullLayouts();
1885            requestLayout();
1886            invalidate();
1887        }
1888    }
1889
1890    /**
1891     * Makes the TextView at least this many lines tall
1892     *
1893     * @attr ref android.R.styleable#TextView_minLines
1894     */
1895    public void setMinLines(int minlines) {
1896        mMinimum = minlines;
1897        mMinMode = LINES;
1898
1899        requestLayout();
1900        invalidate();
1901    }
1902
1903    /**
1904     * Makes the TextView at least this many pixels tall
1905     *
1906     * @attr ref android.R.styleable#TextView_minHeight
1907     */
1908    public void setMinHeight(int minHeight) {
1909        mMinimum = minHeight;
1910        mMinMode = PIXELS;
1911
1912        requestLayout();
1913        invalidate();
1914    }
1915
1916    /**
1917     * Makes the TextView at most this many lines tall
1918     *
1919     * @attr ref android.R.styleable#TextView_maxLines
1920     */
1921    public void setMaxLines(int maxlines) {
1922        mMaximum = maxlines;
1923        mMaxMode = LINES;
1924
1925        requestLayout();
1926        invalidate();
1927    }
1928
1929    /**
1930     * Makes the TextView at most this many pixels tall
1931     *
1932     * @attr ref android.R.styleable#TextView_maxHeight
1933     */
1934    public void setMaxHeight(int maxHeight) {
1935        mMaximum = maxHeight;
1936        mMaxMode = PIXELS;
1937
1938        requestLayout();
1939        invalidate();
1940    }
1941
1942    /**
1943     * Makes the TextView exactly this many lines tall
1944     *
1945     * @attr ref android.R.styleable#TextView_lines
1946     */
1947    public void setLines(int lines) {
1948        mMaximum = mMinimum = lines;
1949        mMaxMode = mMinMode = LINES;
1950
1951        requestLayout();
1952        invalidate();
1953    }
1954
1955    /**
1956     * Makes the TextView exactly this many pixels tall.
1957     * You could do the same thing by specifying this number in the
1958     * LayoutParams.
1959     *
1960     * @attr ref android.R.styleable#TextView_height
1961     */
1962    public void setHeight(int pixels) {
1963        mMaximum = mMinimum = pixels;
1964        mMaxMode = mMinMode = PIXELS;
1965
1966        requestLayout();
1967        invalidate();
1968    }
1969
1970    /**
1971     * Makes the TextView at least this many ems wide
1972     *
1973     * @attr ref android.R.styleable#TextView_minEms
1974     */
1975    public void setMinEms(int minems) {
1976        mMinWidth = minems;
1977        mMinWidthMode = EMS;
1978
1979        requestLayout();
1980        invalidate();
1981    }
1982
1983    /**
1984     * Makes the TextView at least this many pixels wide
1985     *
1986     * @attr ref android.R.styleable#TextView_minWidth
1987     */
1988    public void setMinWidth(int minpixels) {
1989        mMinWidth = minpixels;
1990        mMinWidthMode = PIXELS;
1991
1992        requestLayout();
1993        invalidate();
1994    }
1995
1996    /**
1997     * Makes the TextView at most this many ems wide
1998     *
1999     * @attr ref android.R.styleable#TextView_maxEms
2000     */
2001    public void setMaxEms(int maxems) {
2002        mMaxWidth = maxems;
2003        mMaxWidthMode = EMS;
2004
2005        requestLayout();
2006        invalidate();
2007    }
2008
2009    /**
2010     * Makes the TextView at most this many pixels wide
2011     *
2012     * @attr ref android.R.styleable#TextView_maxWidth
2013     */
2014    public void setMaxWidth(int maxpixels) {
2015        mMaxWidth = maxpixels;
2016        mMaxWidthMode = PIXELS;
2017
2018        requestLayout();
2019        invalidate();
2020    }
2021
2022    /**
2023     * Makes the TextView exactly this many ems wide
2024     *
2025     * @attr ref android.R.styleable#TextView_ems
2026     */
2027    public void setEms(int ems) {
2028        mMaxWidth = mMinWidth = ems;
2029        mMaxWidthMode = mMinWidthMode = EMS;
2030
2031        requestLayout();
2032        invalidate();
2033    }
2034
2035    /**
2036     * Makes the TextView exactly this many pixels wide.
2037     * You could do the same thing by specifying this number in the
2038     * LayoutParams.
2039     *
2040     * @attr ref android.R.styleable#TextView_width
2041     */
2042    public void setWidth(int pixels) {
2043        mMaxWidth = mMinWidth = pixels;
2044        mMaxWidthMode = mMinWidthMode = PIXELS;
2045
2046        requestLayout();
2047        invalidate();
2048    }
2049
2050
2051    /**
2052     * Sets line spacing for this TextView.  Each line will have its height
2053     * multiplied by <code>mult</code> and have <code>add</code> added to it.
2054     *
2055     * @attr ref android.R.styleable#TextView_lineSpacingExtra
2056     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
2057     */
2058    public void setLineSpacing(float add, float mult) {
2059        mSpacingMult = mult;
2060        mSpacingAdd = add;
2061
2062        if (mLayout != null) {
2063            nullLayouts();
2064            requestLayout();
2065            invalidate();
2066        }
2067    }
2068
2069    /**
2070     * Convenience method: Append the specified text to the TextView's
2071     * display buffer, upgrading it to BufferType.EDITABLE if it was
2072     * not already editable.
2073     */
2074    public final void append(CharSequence text) {
2075        append(text, 0, text.length());
2076    }
2077
2078    /**
2079     * Convenience method: Append the specified text slice to the TextView's
2080     * display buffer, upgrading it to BufferType.EDITABLE if it was
2081     * not already editable.
2082     */
2083    public void append(CharSequence text, int start, int end) {
2084        if (!(mText instanceof Editable)) {
2085            setText(mText, BufferType.EDITABLE);
2086        }
2087
2088        ((Editable) mText).append(text, start, end);
2089    }
2090
2091    private void updateTextColors() {
2092        boolean inval = false;
2093        int color = mTextColor.getColorForState(getDrawableState(), 0);
2094        if (color != mCurTextColor) {
2095            mCurTextColor = color;
2096            inval = true;
2097        }
2098        if (mLinkTextColor != null) {
2099            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
2100            if (color != mTextPaint.linkColor) {
2101                mTextPaint.linkColor = color;
2102                inval = true;
2103            }
2104        }
2105        if (mHintTextColor != null) {
2106            color = mHintTextColor.getColorForState(getDrawableState(), 0);
2107            if (color != mCurHintTextColor && mText.length() == 0) {
2108                mCurHintTextColor = color;
2109                inval = true;
2110            }
2111        }
2112        if (inval) {
2113            invalidate();
2114        }
2115    }
2116
2117    @Override
2118    protected void drawableStateChanged() {
2119        super.drawableStateChanged();
2120        if (mTextColor != null && mTextColor.isStateful()
2121                || (mHintTextColor != null && mHintTextColor.isStateful())
2122                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
2123            updateTextColors();
2124        }
2125
2126        final Drawables dr = mDrawables;
2127        if (dr != null) {
2128            int[] state = getDrawableState();
2129            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
2130                dr.mDrawableTop.setState(state);
2131            }
2132            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
2133                dr.mDrawableBottom.setState(state);
2134            }
2135            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
2136                dr.mDrawableLeft.setState(state);
2137            }
2138            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
2139                dr.mDrawableRight.setState(state);
2140            }
2141        }
2142    }
2143
2144    /**
2145     * User interface state that is stored by TextView for implementing
2146     * {@link View#onSaveInstanceState}.
2147     */
2148    public static class SavedState extends BaseSavedState {
2149        int selStart;
2150        int selEnd;
2151        CharSequence text;
2152        boolean frozenWithFocus;
2153
2154        SavedState(Parcelable superState) {
2155            super(superState);
2156        }
2157
2158        @Override
2159        public void writeToParcel(Parcel out, int flags) {
2160            super.writeToParcel(out, flags);
2161            out.writeInt(selStart);
2162            out.writeInt(selEnd);
2163            out.writeInt(frozenWithFocus ? 1 : 0);
2164            TextUtils.writeToParcel(text, out, flags);
2165        }
2166
2167        @Override
2168        public String toString() {
2169            String str = "TextView.SavedState{"
2170                    + Integer.toHexString(System.identityHashCode(this))
2171                    + " start=" + selStart + " end=" + selEnd;
2172            if (text != null) {
2173                str += " text=" + text;
2174            }
2175            return str + "}";
2176        }
2177
2178        public static final Parcelable.Creator<SavedState> CREATOR
2179                = new Parcelable.Creator<SavedState>() {
2180            public SavedState createFromParcel(Parcel in) {
2181                return new SavedState(in);
2182            }
2183
2184            public SavedState[] newArray(int size) {
2185                return new SavedState[size];
2186            }
2187        };
2188
2189        private SavedState(Parcel in) {
2190            super(in);
2191            selStart = in.readInt();
2192            selEnd = in.readInt();
2193            frozenWithFocus = (in.readInt() != 0);
2194            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2195        }
2196    }
2197
2198    @Override
2199    public Parcelable onSaveInstanceState() {
2200        Parcelable superState = super.onSaveInstanceState();
2201
2202        // Save state if we are forced to
2203        boolean save = mFreezesText;
2204        int start = 0;
2205        int end = 0;
2206
2207        if (mText != null) {
2208            start = Selection.getSelectionStart(mText);
2209            end = Selection.getSelectionEnd(mText);
2210            if (start >= 0 || end >= 0) {
2211                // Or save state if there is a selection
2212                save = true;
2213            }
2214        }
2215
2216        if (save) {
2217            SavedState ss = new SavedState(superState);
2218            // XXX Should also save the current scroll position!
2219            ss.selStart = start;
2220            ss.selEnd = end;
2221
2222            if (mText instanceof Spanned) {
2223                /*
2224                 * Calling setText() strips off any ChangeWatchers;
2225                 * strip them now to avoid leaking references.
2226                 * But do it to a copy so that if there are any
2227                 * further changes to the text of this view, it
2228                 * won't get into an inconsistent state.
2229                 */
2230
2231                Spannable sp = new SpannableString(mText);
2232
2233                for (ChangeWatcher cw :
2234                     sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
2235                    sp.removeSpan(cw);
2236                }
2237
2238                ss.text = sp;
2239            } else {
2240                ss.text = mText.toString();
2241            }
2242
2243            if (isFocused() && start >= 0 && end >= 0) {
2244                ss.frozenWithFocus = true;
2245            }
2246
2247            return ss;
2248        }
2249
2250        return superState;
2251    }
2252
2253    @Override
2254    public void onRestoreInstanceState(Parcelable state) {
2255        if (!(state instanceof SavedState)) {
2256            super.onRestoreInstanceState(state);
2257            return;
2258        }
2259
2260        SavedState ss = (SavedState)state;
2261        super.onRestoreInstanceState(ss.getSuperState());
2262
2263        // XXX restore buffer type too, as well as lots of other stuff
2264        if (ss.text != null) {
2265            setText(ss.text);
2266        }
2267
2268        if (ss.selStart >= 0 && ss.selEnd >= 0) {
2269            if (mText instanceof Spannable) {
2270                int len = mText.length();
2271
2272                if (ss.selStart > len || ss.selEnd > len) {
2273                    String restored = "";
2274
2275                    if (ss.text != null) {
2276                        restored = "(restored) ";
2277                    }
2278
2279                    Log.e("TextView", "Saved cursor position " + ss.selStart +
2280                          "/" + ss.selEnd + " out of range for " + restored +
2281                          "text " + mText);
2282                } else {
2283                    Selection.setSelection((Spannable) mText, ss.selStart,
2284                                           ss.selEnd);
2285
2286                    if (ss.frozenWithFocus) {
2287                        mFrozenWithFocus = true;
2288                    }
2289                }
2290            }
2291        }
2292    }
2293
2294    /**
2295     * Control whether this text view saves its entire text contents when
2296     * freezing to an icicle, in addition to dynamic state such as cursor
2297     * position.  By default this is false, not saving the text.  Set to true
2298     * if the text in the text view is not being saved somewhere else in
2299     * persistent storage (such as in a content provider) so that if the
2300     * view is later thawed the user will not lose their data.
2301     *
2302     * @param freezesText Controls whether a frozen icicle should include the
2303     * entire text data: true to include it, false to not.
2304     *
2305     * @attr ref android.R.styleable#TextView_freezesText
2306     */
2307    public void setFreezesText(boolean freezesText) {
2308        mFreezesText = freezesText;
2309    }
2310
2311    /**
2312     * Return whether this text view is including its entire text contents
2313     * in frozen icicles.
2314     *
2315     * @return Returns true if text is included, false if it isn't.
2316     *
2317     * @see #setFreezesText
2318     */
2319    public boolean getFreezesText() {
2320        return mFreezesText;
2321    }
2322
2323    ///////////////////////////////////////////////////////////////////////////
2324
2325    /**
2326     * Sets the Factory used to create new Editables.
2327     */
2328    public final void setEditableFactory(Editable.Factory factory) {
2329        mEditableFactory = factory;
2330        setText(mText);
2331    }
2332
2333    /**
2334     * Sets the Factory used to create new Spannables.
2335     */
2336    public final void setSpannableFactory(Spannable.Factory factory) {
2337        mSpannableFactory = factory;
2338        setText(mText);
2339    }
2340
2341    /**
2342     * Sets the string value of the TextView. TextView <em>does not</em> accept
2343     * HTML-like formatting, which you can do with text strings in XML resource files.
2344     * To style your strings, attach android.text.style.* objects to a
2345     * {@link android.text.SpannableString SpannableString}, or see
2346     * <a href="{@docRoot}reference/available-resources.html#stringresources">
2347     * String Resources</a> for an example of setting formatted text in the XML resource file.
2348     *
2349     * @attr ref android.R.styleable#TextView_text
2350     */
2351    public final void setText(CharSequence text) {
2352        setText(text, mBufferType);
2353    }
2354
2355    /**
2356     * Like {@link #setText(CharSequence)},
2357     * except that the cursor position (if any) is retained in the new text.
2358     *
2359     * @param text The new text to place in the text view.
2360     *
2361     * @see #setText(CharSequence)
2362     */
2363    public final void setTextKeepState(CharSequence text) {
2364        setTextKeepState(text, mBufferType);
2365    }
2366
2367    /**
2368     * Sets the text that this TextView is to display (see
2369     * {@link #setText(CharSequence)}) and also sets whether it is stored
2370     * in a styleable/spannable buffer and whether it is editable.
2371     *
2372     * @attr ref android.R.styleable#TextView_text
2373     * @attr ref android.R.styleable#TextView_bufferType
2374     */
2375    public void setText(CharSequence text, BufferType type) {
2376        setText(text, type, true, 0);
2377
2378        if (mCharWrapper != null) {
2379            mCharWrapper.mChars = null;
2380        }
2381    }
2382
2383    private void setText(CharSequence text, BufferType type,
2384                         boolean notifyBefore, int oldlen) {
2385        if (text == null) {
2386            text = "";
2387        }
2388
2389        if (text instanceof Spanned &&
2390            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
2391            setHorizontalFadingEdgeEnabled(true);
2392            setEllipsize(TextUtils.TruncateAt.MARQUEE);
2393        }
2394
2395        int n = mFilters.length;
2396        for (int i = 0; i < n; i++) {
2397            CharSequence out = mFilters[i].filter(text, 0, text.length(),
2398                                                  EMPTY_SPANNED, 0, 0);
2399            if (out != null) {
2400                text = out;
2401            }
2402        }
2403
2404        if (notifyBefore) {
2405            if (mText != null) {
2406                oldlen = mText.length();
2407                sendBeforeTextChanged(mText, 0, oldlen, text.length());
2408            } else {
2409                sendBeforeTextChanged("", 0, 0, text.length());
2410            }
2411        }
2412
2413        boolean needEditableForNotification = false;
2414
2415        if (mListeners != null && mListeners.size() != 0) {
2416            needEditableForNotification = true;
2417        }
2418
2419        if (type == BufferType.EDITABLE || mInput != null ||
2420            needEditableForNotification) {
2421            Editable t = mEditableFactory.newEditable(text);
2422            text = t;
2423            setFilters(t, mFilters);
2424            InputMethodManager imm = InputMethodManager.peekInstance();
2425            if (imm != null) imm.restartInput(this);
2426        } else if (type == BufferType.SPANNABLE || mMovement != null) {
2427            text = mSpannableFactory.newSpannable(text);
2428        } else if (!(text instanceof CharWrapper)) {
2429            text = TextUtils.stringOrSpannedString(text);
2430        }
2431
2432        if (mAutoLinkMask != 0) {
2433            Spannable s2;
2434
2435            if (type == BufferType.EDITABLE || text instanceof Spannable) {
2436                s2 = (Spannable) text;
2437            } else {
2438                s2 = mSpannableFactory.newSpannable(text);
2439            }
2440
2441            if (Linkify.addLinks(s2, mAutoLinkMask)) {
2442                text = s2;
2443                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
2444
2445                /*
2446                 * We must go ahead and set the text before changing the
2447                 * movement method, because setMovementMethod() may call
2448                 * setText() again to try to upgrade the buffer type.
2449                 */
2450                mText = text;
2451
2452                if (mLinksClickable) {
2453                    setMovementMethod(LinkMovementMethod.getInstance());
2454                }
2455            }
2456        }
2457
2458        mBufferType = type;
2459        mText = text;
2460
2461        if (mTransformation == null)
2462            mTransformed = text;
2463        else
2464            mTransformed = mTransformation.getTransformation(text, this);
2465
2466        final int textLength = text.length();
2467
2468        if (text instanceof Spannable) {
2469            Spannable sp = (Spannable) text;
2470
2471            // Remove any ChangeWatchers that might have come
2472            // from other TextViews.
2473            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
2474            final int count = watchers.length;
2475            for (int i = 0; i < count; i++)
2476                sp.removeSpan(watchers[i]);
2477
2478            if (mChangeWatcher == null)
2479                mChangeWatcher = new ChangeWatcher();
2480
2481            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
2482                       (PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
2483
2484            if (mInput != null) {
2485                sp.setSpan(mInput, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2486            }
2487
2488            if (mTransformation != null) {
2489                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2490
2491            }
2492
2493            if (mMovement != null) {
2494                mMovement.initialize(this, (Spannable) text);
2495
2496                /*
2497                 * Initializing the movement method will have set the
2498                 * selection, so reset mSelectionMoved to keep that from
2499                 * interfering with the normal on-focus selection-setting.
2500                 */
2501                mSelectionMoved = false;
2502            }
2503        }
2504
2505        if (mLayout != null) {
2506            checkForRelayout();
2507        }
2508
2509        sendOnTextChanged(text, 0, oldlen, textLength);
2510        onTextChanged(text, 0, oldlen, textLength);
2511
2512        if (needEditableForNotification) {
2513            sendAfterTextChanged((Editable) text);
2514        }
2515    }
2516
2517    /**
2518     * Sets the TextView to display the specified slice of the specified
2519     * char array.  You must promise that you will not change the contents
2520     * of the array except for right before another call to setText(),
2521     * since the TextView has no way to know that the text
2522     * has changed and that it needs to invalidate and re-layout.
2523     */
2524    public final void setText(char[] text, int start, int len) {
2525        int oldlen = 0;
2526
2527        if (start < 0 || len < 0 || start + len > text.length) {
2528            throw new IndexOutOfBoundsException(start + ", " + len);
2529        }
2530
2531        /*
2532         * We must do the before-notification here ourselves because if
2533         * the old text is a CharWrapper we destroy it before calling
2534         * into the normal path.
2535         */
2536        if (mText != null) {
2537            oldlen = mText.length();
2538            sendBeforeTextChanged(mText, 0, oldlen, len);
2539        } else {
2540            sendBeforeTextChanged("", 0, 0, len);
2541        }
2542
2543        if (mCharWrapper == null) {
2544            mCharWrapper = new CharWrapper(text, start, len);
2545        } else {
2546            mCharWrapper.set(text, start, len);
2547        }
2548
2549        setText(mCharWrapper, mBufferType, false, oldlen);
2550    }
2551
2552    private static class CharWrapper
2553            implements CharSequence, GetChars, GraphicsOperations {
2554        private char[] mChars;
2555        private int mStart, mLength;
2556
2557        public CharWrapper(char[] chars, int start, int len) {
2558            mChars = chars;
2559            mStart = start;
2560            mLength = len;
2561        }
2562
2563        /* package */ void set(char[] chars, int start, int len) {
2564            mChars = chars;
2565            mStart = start;
2566            mLength = len;
2567        }
2568
2569        public int length() {
2570            return mLength;
2571        }
2572
2573        public char charAt(int off) {
2574            return mChars[off + mStart];
2575        }
2576
2577        public String toString() {
2578            return new String(mChars, mStart, mLength);
2579        }
2580
2581        public CharSequence subSequence(int start, int end) {
2582            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2583                throw new IndexOutOfBoundsException(start + ", " + end);
2584            }
2585
2586            return new String(mChars, start + mStart, end - start);
2587        }
2588
2589        public void getChars(int start, int end, char[] buf, int off) {
2590            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2591                throw new IndexOutOfBoundsException(start + ", " + end);
2592            }
2593
2594            System.arraycopy(mChars, start + mStart, buf, off, end - start);
2595        }
2596
2597        public void drawText(Canvas c, int start, int end,
2598                             float x, float y, Paint p) {
2599            c.drawText(mChars, start + mStart, end - start, x, y, p);
2600        }
2601
2602        public float measureText(int start, int end, Paint p) {
2603            return p.measureText(mChars, start + mStart, end - start);
2604        }
2605
2606        public int getTextWidths(int start, int end, float[] widths, Paint p) {
2607            return p.getTextWidths(mChars, start + mStart, end - start, widths);
2608        }
2609    }
2610
2611    /**
2612     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
2613     * except that the cursor position (if any) is retained in the new text.
2614     *
2615     * @see #setText(CharSequence, android.widget.TextView.BufferType)
2616     */
2617    public final void setTextKeepState(CharSequence text, BufferType type) {
2618        int start = getSelectionStart();
2619        int end = getSelectionEnd();
2620        int len = text.length();
2621
2622        setText(text, type);
2623
2624        if (start >= 0 || end >= 0) {
2625            if (mText instanceof Spannable) {
2626                Selection.setSelection((Spannable) mText,
2627                                       Math.max(0, Math.min(start, len)),
2628                                       Math.max(0, Math.min(end, len)));
2629            }
2630        }
2631    }
2632
2633    public final void setText(int resid) {
2634        setText(getContext().getResources().getText(resid));
2635    }
2636
2637    public final void setText(int resid, BufferType type) {
2638        setText(getContext().getResources().getText(resid), type);
2639    }
2640
2641    /**
2642     * Sets the text to be displayed when the text of the TextView is empty.
2643     * Null means to use the normal empty text. The hint does not currently
2644     * participate in determining the size of the view.
2645     *
2646     * This method is deprecated. Use {link #setHint(int, String)} or
2647     * {link #setHint(CharSequence, String)} instead.
2648     *
2649     * @attr ref android.R.styleable#TextView_hint
2650     */
2651    public final void setHint(CharSequence hint) {
2652        mHint = TextUtils.stringOrSpannedString(hint);
2653
2654        if (mLayout != null) {
2655            checkForRelayout();
2656        }
2657
2658        if (mText.length() == 0)
2659            invalidate();
2660    }
2661
2662    /**
2663     * Sets the text to be displayed when the text of the TextView is empty,
2664     * from a resource.
2665     *
2666     * This method is deprecated. Use {link #setHint(int, String)} or
2667     * {link #setHint(CharSequence, String)} instead.
2668     *
2669     * @attr ref android.R.styleable#TextView_hint
2670     */
2671    public final void setHint(int resid) {
2672        setHint(getContext().getResources().getText(resid));
2673    }
2674
2675    /**
2676     * Returns the hint that is displayed when the text of the TextView
2677     * is empty.
2678     *
2679     * @attr ref android.R.styleable#TextView_hint
2680     */
2681    @ViewDebug.CapturedViewProperty
2682    public CharSequence getHint() {
2683        return mHint;
2684    }
2685
2686    /**
2687     * Set the type of the content with a constant as defined for
2688     * {@link EditorInfo#inputType}.  This will take care of changing
2689     * the key listener, by calling {@link #setKeyListener(KeyListener)}, to
2690     * match the given content type.  If the given content type is
2691     * {@link EditorInfo#TYPE_NULL} then a soft keyboard will
2692     * not be displayed for this text view.
2693     *
2694     * @see #getInputType()
2695     * @see #setRawInputType(int)
2696     * @see android.text.InputType
2697     * @attr ref android.R.styleable#TextView_inputType
2698     */
2699    public void setInputType(int type) {
2700        setInputType(type, false);
2701        if ((type&(EditorInfo.TYPE_MASK_CLASS
2702                |EditorInfo.TYPE_MASK_VARIATION))
2703                == (EditorInfo.TYPE_CLASS_TEXT
2704                        |EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
2705            setTransformationMethod(PasswordTransformationMethod.getInstance());
2706            setTypefaceByIndex(MONOSPACE, 0);
2707        }
2708        boolean multiLine = (type&(EditorInfo.TYPE_MASK_CLASS
2709                        | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
2710                (EditorInfo.TYPE_CLASS_TEXT
2711                        | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
2712        if (mSingleLine == multiLine) {
2713            setSingleLine(!multiLine);
2714        }
2715        InputMethodManager imm = InputMethodManager.peekInstance();
2716        if (imm != null) imm.restartInput(this);
2717    }
2718
2719    /**
2720     * Directly change the content type integer of the text view, without
2721     * modifying any other state.
2722     * @see #setContentType
2723     * @see android.text.InputType
2724     * @attr ref android.R.styleable#TextView_inputType
2725     */
2726    public void setRawInputType(int type) {
2727        mInputType = type;
2728    }
2729
2730    private void setInputType(int type, boolean direct) {
2731        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
2732        KeyListener input;
2733        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
2734            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT)
2735                    != 0;
2736            TextKeyListener.Capitalize cap;
2737            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
2738                cap = TextKeyListener.Capitalize.CHARACTERS;
2739            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
2740                cap = TextKeyListener.Capitalize.WORDS;
2741            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
2742                cap = TextKeyListener.Capitalize.SENTENCES;
2743            } else {
2744                cap = TextKeyListener.Capitalize.NONE;
2745            }
2746            input = TextKeyListener.getInstance(autotext, cap);
2747        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
2748            input = DigitsKeyListener.getInstance(
2749                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
2750                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
2751        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
2752            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
2753                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
2754                    input = DateKeyListener.getInstance();
2755                    break;
2756                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
2757                    input = TimeKeyListener.getInstance();
2758                    break;
2759                default:
2760                    input = DateTimeKeyListener.getInstance();
2761                    break;
2762            }
2763        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
2764            input = DialerKeyListener.getInstance();
2765        } else {
2766            input = TextKeyListener.getInstance();
2767        }
2768        mInputType = type;
2769        if (direct) mInput = input;
2770        else {
2771            setKeyListenerOnly(input);
2772        }
2773    }
2774
2775    /**
2776     * Get the type of the content.
2777     *
2778     * @see #setInputType(int)
2779     * @see android.text.InputType
2780     */
2781    public int getInputType() {
2782        return mInputType;
2783    }
2784
2785    /**
2786     * Set the private content type of the text, which is the
2787     * {@link EditorInfo#privateContentType TextBoxAttribute.privateContentType}
2788     * field that will be filled in when creating an input connection.
2789     *
2790     * @see #getPrivateContentType()
2791     * @see EditorInfo#privateContentType
2792     * @attr ref android.R.styleable#TextView_editorPrivateContentType
2793     */
2794    public void setPrivateContentType(String type) {
2795        if (mInputContentType == null) mInputContentType = new InputContentType();
2796        mInputContentType.privateContentType = type;
2797    }
2798
2799    /**
2800     * Get the private type of the content.
2801     *
2802     * @see #setPrivateContentType(String)
2803     * @see EditorInfo#privateContentType
2804     */
2805    public String getPrivateContentType() {
2806        return mInputContentType != null
2807                ? mInputContentType.privateContentType : null;
2808    }
2809
2810    /**
2811     * Set the extra input data of the text, which is the
2812     * {@link EditorInfo#extras TextBoxAttribute.extras}
2813     * Bundle that will be filled in when creating an input connection.  The
2814     * given integer is the resource ID of an XML resource holding an
2815     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
2816     *
2817     * @see #getInputExtras()
2818     * @see EditorInfo#extras
2819     * @attr ref android.R.styleable#TextView_editorExtras
2820     */
2821    public void setInputExtras(int xmlResId)
2822            throws XmlPullParserException, IOException {
2823        XmlResourceParser parser = getResources().getXml(xmlResId);
2824        if (mInputContentType == null) mInputContentType = new InputContentType();
2825        mInputContentType.extras = new Bundle();
2826        getResources().parseBundleExtras(parser, mInputContentType.extras);
2827    }
2828
2829    /**
2830     * Retrieve the input extras currently associated with the text view, which
2831     * can be viewed as well as modified.
2832     *
2833     * @param create If true, the extras will be created if they don't already
2834     * exist.  Otherwise, null will be returned if none have been created.
2835     * @see #setInputExtras(int)
2836     * @see EditorInfo#extras
2837     * @attr ref android.R.styleable#TextView_editorExtras
2838     */
2839    public Bundle getInputExtras(boolean create) {
2840        if (mInputContentType == null) {
2841            if (!create) return null;
2842            mInputContentType = new InputContentType();
2843        }
2844        if (mInputContentType.extras == null) {
2845            if (!create) return null;
2846            mInputContentType.extras = new Bundle();
2847        }
2848        return mInputContentType.extras;
2849    }
2850
2851    /**
2852     * Returns the error message that was set to be displayed with
2853     * {@link #setError}, or <code>null</code> if no error was set
2854     * or if it the error was cleared by the widget after user input.
2855     */
2856    public CharSequence getError() {
2857        return mError;
2858    }
2859
2860    /**
2861     * Sets the right-hand compound drawable of the TextView to the "error"
2862     * icon and sets an error message that will be displayed in a popup when
2863     * the TextView has focus.  The icon and error message will be reset to
2864     * null when any key events cause changes to the TextView's text.  If the
2865     * <code>error</code> is <code>null</code>, the error message and icon
2866     * will be cleared.
2867     */
2868    public void setError(CharSequence error) {
2869        if (error == null) {
2870            setError(null, null);
2871        } else {
2872            Drawable dr = getContext().getResources().
2873                getDrawable(com.android.internal.R.drawable.
2874                            indicator_input_error);
2875
2876            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
2877            setError(error, dr);
2878        }
2879    }
2880
2881    /**
2882     * Sets the right-hand compound drawable of the TextView to the specified
2883     * icon and sets an error message that will be displayed in a popup when
2884     * the TextView has focus.  The icon and error message will be reset to
2885     * null when any key events cause changes to the TextView's text.  The
2886     * drawable must already have had {@link Drawable#setBounds} set on it.
2887     * If the <code>error</code> is <code>null</code>, the error message will
2888     * be cleared (and you should provide a <code>null</code> icon as well).
2889     */
2890    public void setError(CharSequence error, Drawable icon) {
2891        error = TextUtils.stringOrSpannedString(error);
2892
2893        mError = error;
2894        mErrorWasChanged = true;
2895        final Drawables dr = mDrawables;
2896        if (dr != null) {
2897            setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop,
2898                                 icon, dr.mDrawableBottom);
2899        } else {
2900            setCompoundDrawables(null, null, icon, null);
2901        }
2902
2903        if (error == null) {
2904            if (mPopup != null) {
2905                if (mPopup.isShowing()) {
2906                    mPopup.dismiss();
2907                }
2908
2909                mPopup = null;
2910            }
2911        } else {
2912            if (isFocused()) {
2913                showError();
2914            }
2915        }
2916    }
2917
2918    private void showError() {
2919        if (mPopup == null) {
2920            LayoutInflater inflater = LayoutInflater.from(getContext());
2921            TextView err = (TextView) inflater.inflate(com.android.internal.R.layout.textview_hint,
2922                    null);
2923
2924            mPopup = new PopupWindow(err, 200, 50);
2925            mPopup.setFocusable(false);
2926        }
2927
2928        TextView tv = (TextView) mPopup.getContentView();
2929        chooseSize(mPopup, mError, tv);
2930        tv.setText(mError);
2931
2932        mPopup.showAsDropDown(this, getErrorX(), getErrorY());
2933    }
2934
2935    /**
2936     * Returns the Y offset to make the pointy top of the error point
2937     * at the middle of the error icon.
2938     */
2939    private int getErrorX() {
2940        /*
2941         * The "25" is the distance between the point and the right edge
2942         * of the background
2943         */
2944
2945        final Drawables dr = mDrawables;
2946        return getWidth() - mPopup.getWidth()
2947                - getPaddingRight()
2948                - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + 25;
2949    }
2950
2951    /**
2952     * Returns the Y offset to make the pointy top of the error point
2953     * at the bottom of the error icon.
2954     */
2955    private int getErrorY() {
2956        /*
2957         * Compound, not extended, because the icon is not clipped
2958         * if the text height is smaller.
2959         */
2960        int vspace = mBottom - mTop -
2961                     getCompoundPaddingBottom() - getCompoundPaddingTop();
2962
2963        final Drawables dr = mDrawables;
2964        int icontop = getCompoundPaddingTop()
2965                + (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2;
2966
2967        /*
2968         * The "2" is the distance between the point and the top edge
2969         * of the background.
2970         */
2971
2972        return icontop + (dr != null ? dr.mDrawableHeightRight : 0)
2973                - getHeight() - 2;
2974    }
2975
2976    private void hideError() {
2977        if (mPopup != null) {
2978            if (mPopup.isShowing()) {
2979                mPopup.dismiss();
2980            }
2981        }
2982    }
2983
2984    private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) {
2985        int wid = tv.getPaddingLeft() + tv.getPaddingRight();
2986        int ht = tv.getPaddingTop() + tv.getPaddingBottom();
2987
2988        /*
2989         * Figure out how big the text would be if we laid it out to the
2990         * full width of this view minus the border.
2991         */
2992        int cap = getWidth() - wid;
2993        if (cap < 0) {
2994            cap = 200; // We must not be measured yet -- setFrame() will fix it.
2995        }
2996
2997        Layout l = new StaticLayout(text, tv.getPaint(), cap,
2998                                    Layout.Alignment.ALIGN_NORMAL, 1, 0, true);
2999        float max = 0;
3000        for (int i = 0; i < l.getLineCount(); i++) {
3001            max = Math.max(max, l.getLineWidth(i));
3002        }
3003
3004        /*
3005         * Now set the popup size to be big enough for the text plus the border.
3006         */
3007        pop.setWidth(wid + (int) Math.ceil(max));
3008        pop.setHeight(ht + l.getHeight());
3009    }
3010
3011
3012    @Override
3013    protected boolean setFrame(int l, int t, int r, int b) {
3014        boolean result = super.setFrame(l, t, r, b);
3015
3016        if (mPopup != null) {
3017            TextView tv = (TextView) mPopup.getContentView();
3018            chooseSize(mPopup, mError, tv);
3019            mPopup.update(this, getErrorX(), getErrorY(), -1, -1);
3020        }
3021
3022        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3023            mRestartMarquee = false;
3024            startMarquee();
3025        }
3026
3027        return result;
3028    }
3029
3030    /**
3031     * Sets the list of input filters that will be used if the buffer is
3032     * Editable.  Has no effect otherwise.
3033     *
3034     * @attr ref android.R.styleable#TextView_maxLength
3035     */
3036    public void setFilters(InputFilter[] filters) {
3037        if (filters == null) {
3038            throw new IllegalArgumentException();
3039        }
3040
3041        mFilters = filters;
3042
3043        if (mText instanceof Editable) {
3044            setFilters((Editable) mText, filters);
3045        }
3046    }
3047
3048    /**
3049     * Sets the list of input filters on the specified Editable,
3050     * and includes mInput in the list if it is an InputFilter.
3051     */
3052    private void setFilters(Editable e, InputFilter[] filters) {
3053        if (mInput instanceof InputFilter) {
3054            InputFilter[] nf = new InputFilter[filters.length + 1];
3055
3056            System.arraycopy(filters, 0, nf, 0, filters.length);
3057            nf[filters.length] = (InputFilter) mInput;
3058
3059            e.setFilters(nf);
3060        } else {
3061            e.setFilters(filters);
3062        }
3063    }
3064
3065    /**
3066     * Returns the current list of input filters.
3067     */
3068    public InputFilter[] getFilters() {
3069        return mFilters;
3070    }
3071
3072    /////////////////////////////////////////////////////////////////////////
3073
3074    private int getVerticalOffset(boolean forceNormal) {
3075        int voffset = 0;
3076        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3077
3078        Layout l = mLayout;
3079        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3080            l = mHintLayout;
3081        }
3082
3083        if (gravity != Gravity.TOP) {
3084            int boxht;
3085
3086            if (l == mHintLayout) {
3087                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3088                        getCompoundPaddingBottom();
3089            } else {
3090                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3091                        getExtendedPaddingBottom();
3092            }
3093            int textht = l.getHeight();
3094
3095            if (textht < boxht) {
3096                if (gravity == Gravity.BOTTOM)
3097                    voffset = boxht - textht;
3098                else // (gravity == Gravity.CENTER_VERTICAL)
3099                    voffset = (boxht - textht) >> 1;
3100            }
3101        }
3102        return voffset;
3103    }
3104
3105    private int getBottomVerticalOffset(boolean forceNormal) {
3106        int voffset = 0;
3107        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3108
3109        Layout l = mLayout;
3110        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3111            l = mHintLayout;
3112        }
3113
3114        if (gravity != Gravity.BOTTOM) {
3115            int boxht;
3116
3117            if (l == mHintLayout) {
3118                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3119                        getCompoundPaddingBottom();
3120            } else {
3121                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3122                        getExtendedPaddingBottom();
3123            }
3124            int textht = l.getHeight();
3125
3126            if (textht < boxht) {
3127                if (gravity == Gravity.TOP)
3128                    voffset = boxht - textht;
3129                else // (gravity == Gravity.CENTER_VERTICAL)
3130                    voffset = (boxht - textht) >> 1;
3131            }
3132        }
3133        return voffset;
3134    }
3135
3136    private void invalidateCursorPath() {
3137        if (mHighlightPathBogus) {
3138            invalidateCursor();
3139        } else {
3140            synchronized (sTempRect) {
3141                /*
3142                 * The reason for this concern about the thickness of the
3143                 * cursor and doing the floor/ceil on the coordinates is that
3144                 * some EditTexts (notably textfields in the Browser) have
3145                 * anti-aliased text where not all the characters are
3146                 * necessarily at integer-multiple locations.  This should
3147                 * make sure the entire cursor gets invalidated instead of
3148                 * sometimes missing half a pixel.
3149                 */
3150
3151                float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
3152                if (thick < 1.0f) {
3153                    thick = 1.0f;
3154                }
3155
3156                thick /= 2;
3157
3158                mHighlightPath.computeBounds(sTempRect, false);
3159
3160                int left = getCompoundPaddingLeft();
3161                int top = getExtendedPaddingTop() + getVerticalOffset(true);
3162
3163                invalidate((int) FloatMath.floor(left + sTempRect.left - thick),
3164                           (int) FloatMath.floor(top + sTempRect.top - thick),
3165                           (int) FloatMath.ceil(left + sTempRect.right + thick),
3166                           (int) FloatMath.ceil(top + sTempRect.bottom + thick));
3167            }
3168        }
3169    }
3170
3171    private void invalidateCursor() {
3172        int where = Selection.getSelectionEnd(mText);
3173
3174        invalidateCursor(where, where, where);
3175    }
3176
3177    private void invalidateCursor(int a, int b, int c) {
3178        if (mLayout == null) {
3179            invalidate();
3180        } else {
3181            if (a >= 0 || b >= 0 || c >= 0) {
3182                int first = Math.min(Math.min(a, b), c);
3183                int last = Math.max(Math.max(a, b), c);
3184
3185                int line = mLayout.getLineForOffset(first);
3186                int top = mLayout.getLineTop(line);
3187
3188                // This is ridiculous, but the descent from the line above
3189                // can hang down into the line we really want to redraw,
3190                // so we have to invalidate part of the line above to make
3191                // sure everything that needs to be redrawn really is.
3192                // (But not the whole line above, because that would cause
3193                // the same problem with the descenders on the line above it!)
3194                if (line > 0) {
3195                    top -= mLayout.getLineDescent(line - 1);
3196                }
3197
3198                int line2;
3199
3200                if (first == last)
3201                    line2 = line;
3202                else
3203                    line2 = mLayout.getLineForOffset(last);
3204
3205                int bottom = mLayout.getLineTop(line2 + 1);
3206                int voffset = getVerticalOffset(true);
3207
3208                int left = getCompoundPaddingLeft() + mScrollX;
3209                invalidate(left, top + voffset + getExtendedPaddingTop(),
3210                           left + getWidth() - getCompoundPaddingLeft() -
3211                           getCompoundPaddingRight(),
3212                           bottom + voffset + getExtendedPaddingTop());
3213            }
3214        }
3215    }
3216
3217    private void registerForPreDraw() {
3218        final ViewTreeObserver observer = getViewTreeObserver();
3219        if (observer == null) {
3220            return;
3221        }
3222
3223        if (mPreDrawState == PREDRAW_NOT_REGISTERED) {
3224            observer.addOnPreDrawListener(this);
3225            mPreDrawState = PREDRAW_PENDING;
3226        } else if (mPreDrawState == PREDRAW_DONE) {
3227            mPreDrawState = PREDRAW_PENDING;
3228        }
3229
3230        // else state is PREDRAW_PENDING, so keep waiting.
3231    }
3232
3233    /**
3234     * {@inheritDoc}
3235     */
3236    public boolean onPreDraw() {
3237        if (mPreDrawState != PREDRAW_PENDING) {
3238            return true;
3239        }
3240
3241        if (mLayout == null) {
3242            assumeLayout();
3243        }
3244
3245        boolean changed = false;
3246
3247        if (mMovement != null) {
3248            int curs = Selection.getSelectionEnd(mText);
3249
3250            /*
3251             * TODO: This should really only keep the end in view if
3252             * it already was before the text changed.  I'm not sure
3253             * of a good way to tell from here if it was.
3254             */
3255            if (curs < 0 &&
3256                  (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
3257                curs = mText.length();
3258            }
3259
3260            if (curs >= 0) {
3261                changed = bringPointIntoView(curs);
3262            }
3263        } else {
3264            changed = bringTextIntoView();
3265        }
3266
3267        mPreDrawState = PREDRAW_DONE;
3268        return !changed;
3269    }
3270
3271    @Override
3272    protected void onDetachedFromWindow() {
3273        super.onDetachedFromWindow();
3274
3275        if (mPreDrawState != PREDRAW_NOT_REGISTERED) {
3276            final ViewTreeObserver observer = getViewTreeObserver();
3277            if (observer != null) {
3278                observer.removeOnPreDrawListener(this);
3279                mPreDrawState = PREDRAW_NOT_REGISTERED;
3280            }
3281        }
3282
3283        if (mError != null) {
3284            hideError();
3285        }
3286    }
3287
3288    @Override
3289    protected boolean isPaddingOffsetRequired() {
3290        return mShadowRadius != 0;
3291    }
3292
3293    @Override
3294    protected int getLeftPaddingOffset() {
3295        return (int) Math.min(0, mShadowDx - mShadowRadius);
3296    }
3297
3298    @Override
3299    protected int getTopPaddingOffset() {
3300        return (int) Math.min(0, mShadowDy - mShadowRadius);
3301    }
3302
3303    @Override
3304    protected int getBottomPaddingOffset() {
3305        return (int) Math.max(0, mShadowDy + mShadowRadius);
3306    }
3307
3308    @Override
3309    protected int getRightPaddingOffset() {
3310        return (int) Math.max(0, mShadowDx + mShadowRadius);
3311    }
3312
3313    @Override
3314    protected void onDraw(Canvas canvas) {
3315        // Draw the background for this view
3316        super.onDraw(canvas);
3317
3318        final int compoundPaddingLeft = getCompoundPaddingLeft();
3319        final int compoundPaddingTop = getCompoundPaddingTop();
3320        final int compoundPaddingRight = getCompoundPaddingRight();
3321        final int compoundPaddingBottom = getCompoundPaddingBottom();
3322        final int scrollX = mScrollX;
3323        final int scrollY = mScrollY;
3324        final int right = mRight;
3325        final int left = mLeft;
3326        final int bottom = mBottom;
3327        final int top = mTop;
3328
3329        final Drawables dr = mDrawables;
3330        if (dr != null) {
3331            /*
3332             * Compound, not extended, because the icon is not clipped
3333             * if the text height is smaller.
3334             */
3335
3336            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
3337            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
3338
3339            if (dr.mDrawableLeft != null) {
3340                canvas.save();
3341                canvas.translate(scrollX + mPaddingLeft,
3342                                 scrollY + compoundPaddingTop +
3343                                 (vspace - dr.mDrawableHeightLeft) / 2);
3344                dr.mDrawableLeft.draw(canvas);
3345                canvas.restore();
3346            }
3347
3348            if (dr.mDrawableRight != null) {
3349                canvas.save();
3350                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
3351                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
3352                dr.mDrawableRight.draw(canvas);
3353                canvas.restore();
3354            }
3355
3356            if (dr.mDrawableTop != null) {
3357                canvas.save();
3358                canvas.translate(scrollX + compoundPaddingLeft + (hspace - dr.mDrawableWidthTop) / 2,
3359                        scrollY + mPaddingTop);
3360                dr.mDrawableTop.draw(canvas);
3361                canvas.restore();
3362            }
3363
3364            if (dr.mDrawableBottom != null) {
3365                canvas.save();
3366                canvas.translate(scrollX + compoundPaddingLeft +
3367                        (hspace - dr.mDrawableWidthBottom) / 2,
3368                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
3369                dr.mDrawableBottom.draw(canvas);
3370                canvas.restore();
3371            }
3372        }
3373
3374        if (mPreDrawState == PREDRAW_DONE) {
3375            final ViewTreeObserver observer = getViewTreeObserver();
3376            if (observer != null) {
3377                observer.removeOnPreDrawListener(this);
3378                mPreDrawState = PREDRAW_NOT_REGISTERED;
3379            }
3380        }
3381
3382        int color = mCurTextColor;
3383
3384        if (mLayout == null) {
3385            assumeLayout();
3386        }
3387
3388        Layout layout = mLayout;
3389        int cursorcolor = color;
3390
3391        if (mHint != null && mText.length() == 0) {
3392            if (mHintTextColor != null) {
3393                color = mCurHintTextColor;
3394            }
3395
3396            layout = mHintLayout;
3397        }
3398
3399        mTextPaint.setColor(color);
3400        mTextPaint.drawableState = getDrawableState();
3401
3402        canvas.save();
3403        /*  Would be faster if we didn't have to do this. Can we chop the
3404            (displayable) text so that we don't need to do this ever?
3405        */
3406
3407        int extendedPaddingTop = getExtendedPaddingTop();
3408        int extendedPaddingBottom = getExtendedPaddingBottom();
3409
3410        float clipLeft = compoundPaddingLeft + scrollX;
3411        float clipTop = extendedPaddingTop + scrollY;
3412        float clipRight = right - left - compoundPaddingRight + scrollX;
3413        float clipBottom = bottom - top - extendedPaddingBottom + scrollY;
3414
3415        if (mShadowRadius != 0) {
3416            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
3417            clipRight += Math.max(0, mShadowDx + mShadowRadius);
3418
3419            clipTop += Math.min(0, mShadowDy - mShadowRadius);
3420            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
3421        }
3422
3423        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
3424
3425        int voffsetText = 0;
3426        int voffsetCursor = 0;
3427
3428        // translate in by our padding
3429        {
3430            /* shortcircuit calling getVerticaOffset() */
3431            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
3432                voffsetText = getVerticalOffset(false);
3433                voffsetCursor = getVerticalOffset(true);
3434            }
3435            canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
3436        }
3437
3438        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3439            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
3440                    (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
3441                canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft -
3442                        getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f);
3443            }
3444
3445            if (mMarquee != null && mMarquee.isRunning()) {
3446                canvas.translate(-mMarquee.mScroll, 0.0f);
3447            }
3448        }
3449
3450        Path highlight = null;
3451        int selStart = -1, selEnd = -1;
3452
3453        //  If there is no movement method, then there can be no selection.
3454        //  Check that first and attempt to skip everything having to do with
3455        //  the cursor.
3456        //  XXX This is not strictly true -- a program could set the
3457        //  selection manually if it really wanted to.
3458        if (mMovement != null && (isFocused() || isPressed())) {
3459            selStart = Selection.getSelectionStart(mText);
3460            selEnd = Selection.getSelectionEnd(mText);
3461
3462            if (mCursorVisible && selStart >= 0 && isEnabled()) {
3463                if (mHighlightPath == null)
3464                    mHighlightPath = new Path();
3465
3466                if (selStart == selEnd) {
3467                    if ((SystemClock.uptimeMillis() - mShowCursor) % (2 * BLINK)
3468                        < BLINK) {
3469                        if (mHighlightPathBogus) {
3470                            mHighlightPath.reset();
3471                            mLayout.getCursorPath(selStart, mHighlightPath, mText);
3472                            mHighlightPathBogus = false;
3473                        }
3474
3475                        // XXX should pass to skin instead of drawing directly
3476                        mHighlightPaint.setColor(cursorcolor);
3477                        mHighlightPaint.setStyle(Paint.Style.STROKE);
3478
3479                        highlight = mHighlightPath;
3480                    }
3481                } else {
3482                    if (mHighlightPathBogus) {
3483                        mHighlightPath.reset();
3484                        mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
3485                        mHighlightPathBogus = false;
3486                    }
3487
3488                    // XXX should pass to skin instead of drawing directly
3489                    mHighlightPaint.setColor(mHighlightColor);
3490                    mHighlightPaint.setStyle(Paint.Style.FILL);
3491
3492                    highlight = mHighlightPath;
3493                }
3494            }
3495        }
3496
3497        /*  Comment out until we decide what to do about animations
3498        boolean isLinearTextOn = false;
3499        if (currentTransformation != null) {
3500            isLinearTextOn = mTextPaint.isLinearTextOn();
3501            Matrix m = currentTransformation.getMatrix();
3502            if (!m.isIdentity()) {
3503                // mTextPaint.setLinearTextOn(true);
3504            }
3505        }
3506        */
3507
3508        InputMethodManager imm = InputMethodManager.peekInstance();
3509        if (highlight != null && mInputMethodState != null
3510                && !mInputMethodState.mBatchEditing && imm != null) {
3511            if (imm.isActive(this)) {
3512                int candStart = -1;
3513                int candEnd = -1;
3514                if (mText instanceof Spannable) {
3515                    Spannable sp = (Spannable)mText;
3516                    candStart = EditableInputConnection.getComposingSpanStart(sp);
3517                    candEnd = EditableInputConnection.getComposingSpanEnd(sp);
3518                }
3519                imm.updateSelection(this, selStart, selEnd, candStart, candEnd);
3520            }
3521
3522            if (imm.isWatchingCursor(this)) {
3523                final InputMethodState ims = mInputMethodState;
3524                highlight.computeBounds(ims.mTmpRectF, true);
3525                ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0;
3526
3527                canvas.getMatrix().mapPoints(ims.mTmpOffset);
3528                ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]);
3529
3530                ims.mTmpRectF.offset(0, voffsetCursor - voffsetText);
3531
3532                ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5),
3533                        (int)(ims.mTmpRectF.top + 0.5),
3534                        (int)(ims.mTmpRectF.right + 0.5),
3535                        (int)(ims.mTmpRectF.bottom + 0.5));
3536
3537                imm.updateCursor(this,
3538                        ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top,
3539                        ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom);
3540            }
3541        }
3542
3543        layout.draw(canvas, highlight, mHighlightPaint, voffsetCursor - voffsetText);
3544
3545        /*  Comment out until we decide what to do about animations
3546        if (currentTransformation != null) {
3547            mTextPaint.setLinearTextOn(isLinearTextOn);
3548        }
3549        */
3550
3551        canvas.restore();
3552    }
3553
3554    @Override
3555    public void getFocusedRect(Rect r) {
3556        if (mLayout == null) {
3557            super.getFocusedRect(r);
3558            return;
3559        }
3560
3561        int sel = getSelectionEnd();
3562        if (sel < 0) {
3563            super.getFocusedRect(r);
3564            return;
3565        }
3566
3567        int line = mLayout.getLineForOffset(sel);
3568        r.top = mLayout.getLineTop(line);
3569        r.bottom = mLayout.getLineBottom(line);
3570
3571        r.left = (int) mLayout.getPrimaryHorizontal(sel);
3572        r.right = r.left + 1;
3573
3574        // Adjust for padding and gravity.
3575        int paddingLeft = getCompoundPaddingLeft();
3576        int paddingTop = getExtendedPaddingTop();
3577        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
3578            paddingTop += getVerticalOffset(false);
3579        }
3580        r.offset(paddingLeft, paddingTop);
3581    }
3582
3583    /**
3584     * Return the number of lines of text, or 0 if the internal Layout has not
3585     * been built.
3586     */
3587    public int getLineCount() {
3588        return mLayout != null ? mLayout.getLineCount() : 0;
3589    }
3590
3591    /**
3592     * Return the baseline for the specified line (0...getLineCount() - 1)
3593     * If bounds is not null, return the top, left, right, bottom extents
3594     * of the specified line in it. If the internal Layout has not been built,
3595     * return 0 and set bounds to (0, 0, 0, 0)
3596     * @param line which line to examine (0..getLineCount() - 1)
3597     * @param bounds Optional. If not null, it returns the extent of the line
3598     * @return the Y-coordinate of the baseline
3599     */
3600    public int getLineBounds(int line, Rect bounds) {
3601        if (mLayout == null) {
3602            if (bounds != null) {
3603                bounds.set(0, 0, 0, 0);
3604            }
3605            return 0;
3606        }
3607        else {
3608            int baseline = mLayout.getLineBounds(line, bounds);
3609
3610            int voffset = getExtendedPaddingTop();
3611            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
3612                voffset += getVerticalOffset(true);
3613            }
3614            if (bounds != null) {
3615                bounds.offset(getCompoundPaddingLeft(), voffset);
3616            }
3617            return baseline + voffset;
3618        }
3619    }
3620
3621    @Override
3622    public int getBaseline() {
3623        if (mLayout == null) {
3624            return super.getBaseline();
3625        }
3626
3627        int voffset = 0;
3628        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
3629            voffset = getVerticalOffset(true);
3630        }
3631
3632        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
3633    }
3634
3635    @Override
3636    public boolean onKeyDown(int keyCode, KeyEvent event) {
3637        int which = doKeyDown(keyCode, event);
3638        if (which == 0) {
3639            // Go through default dispatching.
3640            return super.onKeyDown(keyCode, event);
3641        }
3642
3643        return true;
3644    }
3645
3646    @Override
3647    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
3648        KeyEvent down = new KeyEvent(event, KeyEvent.ACTION_DOWN);
3649
3650        int which = doKeyDown(keyCode, down);
3651        if (which == 0) {
3652            // Go through default dispatching.
3653            return super.onKeyMultiple(keyCode, repeatCount, event);
3654        }
3655
3656        // We are going to dispatch the remaining events to either the input
3657        // or movement method.  To do this, we will just send a repeated stream
3658        // of down and up events until we have done the complete repeatCount.
3659        // It would be nice if those interfaces had an onKeyMultiple() method,
3660        // but adding that is a more complicated change.
3661        KeyEvent up = new KeyEvent(event, KeyEvent.ACTION_UP);
3662        if (which == 1) {
3663            mInput.onKeyUp(this, (Editable)mText, keyCode, up);
3664            while (--repeatCount > 0) {
3665                mInput.onKeyDown(this, (Editable)mText, keyCode, down);
3666                mInput.onKeyUp(this, (Editable)mText, keyCode, up);
3667            }
3668            if (mError != null && !mErrorWasChanged) {
3669                setError(null, null);
3670            }
3671
3672        } else if (which == 2) {
3673            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
3674            while (--repeatCount > 0) {
3675                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
3676                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
3677            }
3678        }
3679
3680        return true;
3681    }
3682
3683    private int doKeyDown(int keyCode, KeyEvent event) {
3684        if (!isEnabled()) {
3685            return 0;
3686        }
3687
3688        switch (keyCode) {
3689            case KeyEvent.KEYCODE_DPAD_CENTER:
3690            case KeyEvent.KEYCODE_ENTER:
3691                if (mSingleLine && mInput != null) {
3692                    return 0;
3693                }
3694        }
3695
3696        if (mInput != null) {
3697            /*
3698             * Keep track of what the error was before doing the input
3699             * so that if an input filter changed the error, we leave
3700             * that error showing.  Otherwise, we take down whatever
3701             * error was showing when the user types something.
3702             */
3703            mErrorWasChanged = false;
3704
3705            if (mInput.onKeyDown(this, (Editable) mText, keyCode, event)) {
3706                if (mError != null && !mErrorWasChanged) {
3707                    setError(null, null);
3708                }
3709                return 1;
3710            }
3711        }
3712
3713        // bug 650865: sometimes we get a key event before a layout.
3714        // don't try to move around if we don't know the layout.
3715
3716        if (mMovement != null && mLayout != null)
3717            if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
3718                return 2;
3719
3720        return 0;
3721    }
3722
3723    @Override
3724    public boolean onKeyUp(int keyCode, KeyEvent event) {
3725        if (!isEnabled()) {
3726            return super.onKeyUp(keyCode, event);
3727        }
3728
3729        switch (keyCode) {
3730            case KeyEvent.KEYCODE_DPAD_CENTER:
3731            case KeyEvent.KEYCODE_ENTER:
3732                if (mSingleLine && mInput != null) {
3733                    /*
3734                     * If there is a click listener, just call through to
3735                     * super, which will invoke it.
3736                     *
3737                     * If there isn't a click listener, try to advance focus,
3738                     * but still call through to super, which will reset the
3739                     * pressed state and longpress state.  (It will also
3740                     * call performClick(), but that won't do anything in
3741                     * this case.)
3742                     */
3743                    if (mOnClickListener == null) {
3744                        View v = focusSearch(FOCUS_DOWN);
3745
3746                        if (v != null) {
3747                            if (!v.requestFocus(FOCUS_DOWN)) {
3748                                throw new IllegalStateException("focus search returned a view " +
3749                                        "that wasn't able to take focus!");
3750                            }
3751
3752                            /*
3753                             * Return true because we handled the key; super
3754                             * will return false because there was no click
3755                             * listener.
3756                             */
3757                            super.onKeyUp(keyCode, event);
3758                            return true;
3759                        }
3760                    }
3761
3762                    return super.onKeyUp(keyCode, event);
3763                }
3764        }
3765
3766        if (mInput != null)
3767            if (mInput.onKeyUp(this, (Editable) mText, keyCode, event))
3768                return true;
3769
3770        if (mMovement != null && mLayout != null)
3771            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
3772                return true;
3773
3774        return super.onKeyUp(keyCode, event);
3775    }
3776
3777    @Override public boolean onCheckIsTextEditor() {
3778        return mInputType != EditorInfo.TYPE_NULL;
3779    }
3780
3781    @Override public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
3782        if (onCheckIsTextEditor()) {
3783            if (mInputMethodState == null) {
3784                mInputMethodState = new InputMethodState();
3785            }
3786            outAttrs.inputType = mInputType;
3787            outAttrs.hintText = mHint;
3788            if (mInputContentType != null) {
3789                outAttrs.privateContentType = mInputContentType.privateContentType;
3790                outAttrs.extras = mInputContentType.extras;
3791            }
3792            if (mText instanceof Editable) {
3793                InputConnection ic = new EditableInputConnection(this);
3794                outAttrs.initialSelStart = Selection.getSelectionStart(mText);
3795                outAttrs.initialSelEnd = Selection.getSelectionEnd(mText);
3796                outAttrs.initialCapsMode = ic.getCursorCapsMode(mInputType);
3797                return ic;
3798            }
3799        }
3800        return null;
3801    }
3802
3803    /**
3804     * If this TextView contains editable content, extract a portion of it
3805     * based on the information in <var>request</var> in to <var>outText</var>.
3806     * @return Returns true if the text is editable and was successfully
3807     * extracted, else false.
3808     */
3809    public boolean extractText(ExtractedTextRequest request,
3810            ExtractedText outText) {
3811        Editable content = getEditableText();
3812        if (content != null) {
3813            outText.text = content.subSequence(0, content.length());
3814            outText.startOffset = 0;
3815            outText.selectionStart = Selection.getSelectionStart(content);
3816            outText.selectionEnd = Selection.getSelectionEnd(content);
3817            return true;
3818        }
3819        return false;
3820    }
3821
3822    void reportExtractedText() {
3823        if (mInputMethodState != null) {
3824            final ExtractedTextRequest req = mInputMethodState.mExtracting;
3825            if (req != null) {
3826                InputMethodManager imm = InputMethodManager.peekInstance();
3827                if (imm != null) {
3828                    if (extractText(req, mInputMethodState.mTmpExtracted)) {
3829                        imm.updateExtractedText(this, req.token,
3830                                mInputMethodState.mTmpExtracted);
3831                    }
3832                }
3833            }
3834        }
3835    }
3836
3837    /**
3838     * Apply to this text view the given extracted text, as previously
3839     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
3840     */
3841    public void setExtractedText(ExtractedText text) {
3842        setText(text.text, TextView.BufferType.EDITABLE);
3843        Selection.setSelection((Spannable)getText(),
3844                text.selectionStart, text.selectionEnd);
3845    }
3846
3847    /**
3848     * @hide
3849     */
3850    public void setExtracting(ExtractedTextRequest req) {
3851        if (mInputMethodState != null) {
3852            mInputMethodState.mExtracting = req;
3853        }
3854    }
3855
3856    /**
3857     * Called by the framework in response to a text completion from
3858     * the current input method, provided by it calling
3859     * {@link InputConnection#commitCompletion
3860     * InputConnection.commitCompletion()}.  The default implementation does
3861     * nothing; text views that are supporting auto-completion should override
3862     * this to do their desired behavior.
3863     *
3864     * @param text The auto complete text the user has selected.
3865     */
3866    public void onCommitCompletion(CompletionInfo text) {
3867    }
3868
3869    /**
3870     * Called by the framework in response to a request to begin a batch
3871     * of edit operations from the current input method, as a result of
3872     * it calling {@link InputConnection#beginBatchEdit
3873     * InputConnection.beginBatchEdit()}.  The default implementation sets
3874     * up the TextView's internal state to take care of this; if overriding
3875     * you should call through to the super class.
3876     */
3877    public void onBeginBatchEdit() {
3878        if (mInputMethodState != null) {
3879            // XXX we should be smarter here, such as not doing invalidates
3880            // until all edits are done.
3881            mInputMethodState.mBatchEditing = true;
3882        }
3883    }
3884
3885    /**
3886     * Called by the framework in response to a request to end a batch
3887     * of edit operations from the current input method, as a result of
3888     * it calling {@link InputConnection#endBatchEdit
3889     * InputConnection.endBatchEdit()}.  The default implementation sets
3890     * up the TextView's internal state to take care of this; if overriding
3891     * you should call through to the super class.
3892     */
3893    public void onEndBatchEdit() {
3894        if (mInputMethodState != null) {
3895            mInputMethodState.mBatchEditing = false;
3896            // Cheezy way to get us to report the current cursor location.
3897            invalidateCursor();
3898        }
3899    }
3900
3901    /**
3902     * Called by the framework in response to a private command from the
3903     * current method, provided by it calling
3904     * {@link InputConnection#performPrivateCommand
3905     * InputConnection.performPrivateCommand()}.
3906     *
3907     * @param action The action name of the command.
3908     * @param data Any additional data for the command.  This may be null.
3909     * @return Return true if you handled the command, else false.
3910     */
3911    public boolean onPrivateIMECommand(String action, Bundle data) {
3912        return false;
3913    }
3914
3915    private void nullLayouts() {
3916        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
3917            mSavedLayout = (BoringLayout) mLayout;
3918        }
3919        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
3920            mSavedHintLayout = (BoringLayout) mHintLayout;
3921        }
3922
3923        mLayout = mHintLayout = null;
3924    }
3925
3926    /**
3927     * Make a new Layout based on the already-measured size of the view,
3928     * on the assumption that it was measured correctly at some point.
3929     */
3930    private void assumeLayout() {
3931        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
3932
3933        if (width < 1) {
3934            width = 0;
3935        }
3936
3937        int physicalWidth = width;
3938
3939        if (mHorizontallyScrolling) {
3940            width = VERY_WIDE;
3941        }
3942
3943        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
3944                      physicalWidth, false);
3945    }
3946
3947    /**
3948     * The width passed in is now the desired layout width,
3949     * not the full view width with padding.
3950     * {@hide}
3951     */
3952    protected void makeNewLayout(int w, int hintWidth,
3953                                 BoringLayout.Metrics boring,
3954                                 BoringLayout.Metrics hintBoring,
3955                                 int ellipsisWidth, boolean bringIntoView) {
3956        stopMarquee();
3957
3958        mHighlightPathBogus = true;
3959
3960        if (w < 0) {
3961            w = 0;
3962        }
3963        if (hintWidth < 0) {
3964            hintWidth = 0;
3965        }
3966
3967        Layout.Alignment alignment;
3968        switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
3969            case Gravity.CENTER_HORIZONTAL:
3970                alignment = Layout.Alignment.ALIGN_CENTER;
3971                break;
3972
3973            case Gravity.RIGHT:
3974                alignment = Layout.Alignment.ALIGN_OPPOSITE;
3975                break;
3976
3977            default:
3978                alignment = Layout.Alignment.ALIGN_NORMAL;
3979        }
3980
3981        if (mText instanceof Spannable) {
3982            mLayout = new DynamicLayout(mText, mTransformed, mTextPaint, w,
3983                    alignment, mSpacingMult,
3984                    mSpacingAdd, mIncludePad, mEllipsize,
3985                    ellipsisWidth);
3986        } else {
3987            if (boring == UNKNOWN_BORING) {
3988                boring = BoringLayout.isBoring(mTransformed, mTextPaint,
3989                                               mBoring);
3990                if (boring != null) {
3991                    mBoring = boring;
3992                }
3993            }
3994
3995            if (boring != null) {
3996                if (boring.width <= w &&
3997                    (mEllipsize == null || boring.width <= ellipsisWidth)) {
3998                    if (mSavedLayout != null) {
3999                        mLayout = mSavedLayout.
4000                                replaceOrMake(mTransformed, mTextPaint,
4001                                w, alignment, mSpacingMult, mSpacingAdd,
4002                                boring, mIncludePad);
4003                    } else {
4004                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
4005                                w, alignment, mSpacingMult, mSpacingAdd,
4006                                boring, mIncludePad);
4007                    }
4008                    // Log.e("aaa", "Boring: " + mTransformed);
4009
4010                    mSavedLayout = (BoringLayout) mLayout;
4011                } else if (mEllipsize != null && boring.width <= w) {
4012                    if (mSavedLayout != null) {
4013                        mLayout = mSavedLayout.
4014                                replaceOrMake(mTransformed, mTextPaint,
4015                                w, alignment, mSpacingMult, mSpacingAdd,
4016                                boring, mIncludePad, mEllipsize,
4017                                ellipsisWidth);
4018                    } else {
4019                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
4020                                w, alignment, mSpacingMult, mSpacingAdd,
4021                                boring, mIncludePad, mEllipsize,
4022                                ellipsisWidth);
4023                    }
4024                } else if (mEllipsize != null) {
4025                    mLayout = new StaticLayout(mTransformed,
4026                                0, mTransformed.length(),
4027                                mTextPaint, w, alignment, mSpacingMult,
4028                                mSpacingAdd, mIncludePad, mEllipsize,
4029                                ellipsisWidth);
4030                } else {
4031                    mLayout = new StaticLayout(mTransformed, mTextPaint,
4032                            w, alignment, mSpacingMult, mSpacingAdd,
4033                            mIncludePad);
4034                    // Log.e("aaa", "Boring but wide: " + mTransformed);
4035                }
4036            } else if (mEllipsize != null) {
4037                mLayout = new StaticLayout(mTransformed,
4038                            0, mTransformed.length(),
4039                            mTextPaint, w, alignment, mSpacingMult,
4040                            mSpacingAdd, mIncludePad, mEllipsize,
4041                            ellipsisWidth);
4042            } else {
4043                mLayout = new StaticLayout(mTransformed, mTextPaint,
4044                        w, alignment, mSpacingMult, mSpacingAdd,
4045                        mIncludePad);
4046            }
4047        }
4048
4049        mHintLayout = null;
4050
4051        if (mHint != null) {
4052            if (hintBoring == UNKNOWN_BORING) {
4053                hintBoring = BoringLayout.isBoring(mHint, mTextPaint,
4054                                                   mHintBoring);
4055                if (hintBoring != null) {
4056                    mHintBoring = hintBoring;
4057                }
4058            }
4059
4060            if (hintBoring != null) {
4061                if (hintBoring.width <= hintWidth) {
4062                    if (mSavedHintLayout != null) {
4063                        mHintLayout = mSavedHintLayout.
4064                                replaceOrMake(mHint, mTextPaint,
4065                                hintWidth, alignment, mSpacingMult,
4066                                mSpacingAdd, hintBoring, mIncludePad);
4067                    } else {
4068                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
4069                                hintWidth, alignment, mSpacingMult,
4070                                mSpacingAdd, hintBoring, mIncludePad);
4071                    }
4072
4073                    mSavedHintLayout = (BoringLayout) mHintLayout;
4074                } else {
4075                    mHintLayout = new StaticLayout(mHint, mTextPaint,
4076                            hintWidth, alignment, mSpacingMult, mSpacingAdd,
4077                            mIncludePad);
4078                }
4079            } else {
4080                mHintLayout = new StaticLayout(mHint, mTextPaint,
4081                        hintWidth, alignment, mSpacingMult, mSpacingAdd,
4082                        mIncludePad);
4083            }
4084        }
4085
4086        if (bringIntoView) {
4087            registerForPreDraw();
4088        }
4089
4090        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4091            final int height = mLayoutParams.height;
4092            // If the size of the view does not depend on the size of the text, try to
4093            // start the marquee immediately
4094            if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.FILL_PARENT) {
4095                startMarquee();
4096            } else {
4097                // Defer the start of the marquee until we know our width (see setFrame())
4098                mRestartMarquee = true;
4099            }
4100        }
4101    }
4102
4103    private static int desired(Layout layout) {
4104        int n = layout.getLineCount();
4105        CharSequence text = layout.getText();
4106        float max = 0;
4107
4108        // if any line was wrapped, we can't use it.
4109        // but it's ok for the last line not to have a newline
4110
4111        for (int i = 0; i < n - 1; i++) {
4112            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
4113                return -1;
4114        }
4115
4116        for (int i = 0; i < n; i++) {
4117            max = Math.max(max, layout.getLineWidth(i));
4118        }
4119
4120        return (int) FloatMath.ceil(max);
4121    }
4122
4123    /**
4124     * Set whether the TextView includes extra top and bottom padding to make
4125     * room for accents that go above the normal ascent and descent.
4126     * The default is true.
4127     *
4128     * @attr ref android.R.styleable#TextView_includeFontPadding
4129     */
4130    public void setIncludeFontPadding(boolean includepad) {
4131        mIncludePad = includepad;
4132
4133        if (mLayout != null) {
4134            nullLayouts();
4135            requestLayout();
4136            invalidate();
4137        }
4138    }
4139
4140    private static final BoringLayout.Metrics UNKNOWN_BORING =
4141                                                new BoringLayout.Metrics();
4142
4143    @Override
4144    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
4145        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
4146        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
4147        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
4148        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
4149
4150        int width;
4151        int height;
4152
4153        BoringLayout.Metrics boring = UNKNOWN_BORING;
4154        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
4155
4156        int des = -1;
4157        boolean fromexisting = false;
4158
4159        if (widthMode == MeasureSpec.EXACTLY) {
4160            // Parent has told us how big to be. So be it.
4161            width = widthSize;
4162        } else {
4163            if (mLayout != null && mEllipsize == null) {
4164                des = desired(mLayout);
4165            }
4166
4167            if (des < 0) {
4168                boring = BoringLayout.isBoring(mTransformed, mTextPaint,
4169                                               mBoring);
4170                if (boring != null) {
4171                    mBoring = boring;
4172                }
4173            } else {
4174                fromexisting = true;
4175            }
4176
4177            if (boring == null || boring == UNKNOWN_BORING) {
4178                if (des < 0) {
4179                    des = (int) FloatMath.ceil(Layout.
4180                                    getDesiredWidth(mTransformed, mTextPaint));
4181                }
4182
4183                width = des;
4184            } else {
4185                width = boring.width;
4186            }
4187
4188            final Drawables dr = mDrawables;
4189            if (dr != null) {
4190                width = Math.max(width, dr.mDrawableWidthTop);
4191                width = Math.max(width, dr.mDrawableWidthBottom);
4192            }
4193
4194            if (mHint != null) {
4195                int hintDes = -1;
4196                int hintWidth;
4197
4198                if (mHintLayout != null) {
4199                    hintDes = desired(mHintLayout);
4200                }
4201
4202                if (hintDes < 0) {
4203                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint,
4204                                                       mHintBoring);
4205                    if (hintBoring != null) {
4206                        mHintBoring = hintBoring;
4207                    }
4208                }
4209
4210                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
4211                    if (hintDes < 0) {
4212                        hintDes = (int) FloatMath.ceil(Layout.
4213                                        getDesiredWidth(mHint, mTextPaint));
4214                    }
4215
4216                    hintWidth = hintDes;
4217                } else {
4218                    hintWidth = hintBoring.width;
4219                }
4220
4221                if (hintWidth > width) {
4222                    width = hintWidth;
4223                }
4224            }
4225
4226            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
4227
4228            if (mMaxWidthMode == EMS) {
4229                width = Math.min(width, mMaxWidth * getLineHeight());
4230            } else {
4231                width = Math.min(width, mMaxWidth);
4232            }
4233
4234            if (mMinWidthMode == EMS) {
4235                width = Math.max(width, mMinWidth * getLineHeight());
4236            } else {
4237                width = Math.max(width, mMinWidth);
4238            }
4239
4240            // Check against our minimum width
4241            width = Math.max(width, getSuggestedMinimumWidth());
4242
4243            if (widthMode == MeasureSpec.AT_MOST) {
4244                width = Math.min(widthSize, width);
4245            }
4246        }
4247
4248        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
4249        int unpaddedWidth = want;
4250        int hintWant = want;
4251
4252        if (mHorizontallyScrolling)
4253            want = VERY_WIDE;
4254
4255        int hintWidth = mHintLayout == null ? hintWant : mHintLayout.getWidth();
4256
4257        if (mLayout == null) {
4258            makeNewLayout(want, hintWant, boring, hintBoring,
4259                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(),
4260                          false);
4261        } else if ((mLayout.getWidth() != want) || (hintWidth != hintWant) ||
4262                   (mLayout.getEllipsizedWidth() !=
4263                        width - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
4264            if (mHint == null && mEllipsize == null &&
4265                    want > mLayout.getWidth() &&
4266                    (mLayout instanceof BoringLayout ||
4267                        (fromexisting && des >= 0 && des <= want))) {
4268                mLayout.increaseWidthTo(want);
4269            } else {
4270                makeNewLayout(want, hintWant, boring, hintBoring,
4271                              width - getCompoundPaddingLeft() - getCompoundPaddingRight(),
4272                              false);
4273            }
4274        } else {
4275            // Width has not changed.
4276        }
4277
4278        if (heightMode == MeasureSpec.EXACTLY) {
4279            // Parent has told us how big to be. So be it.
4280            height = heightSize;
4281            mDesiredHeightAtMeasure = -1;
4282        } else {
4283            int desired = getDesiredHeight();
4284
4285            height = desired;
4286            mDesiredHeightAtMeasure = desired;
4287
4288            if (heightMode == MeasureSpec.AT_MOST) {
4289                height = Math.min(desired, height);
4290            }
4291        }
4292
4293        int unpaddedHeight = height - getCompoundPaddingTop() -
4294                                getCompoundPaddingBottom();
4295        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
4296            unpaddedHeight = Math.min(unpaddedHeight,
4297                                      mLayout.getLineTop(mMaximum));
4298        }
4299
4300        /*
4301         * We didn't let makeNewLayout() register to bring the cursor into view,
4302         * so do it here if there is any possibility that it is needed.
4303         */
4304        if (mMovement != null ||
4305            mLayout.getWidth() > unpaddedWidth ||
4306            mLayout.getHeight() > unpaddedHeight) {
4307            registerForPreDraw();
4308        } else {
4309            scrollTo(0, 0);
4310        }
4311
4312        setMeasuredDimension(width, height);
4313    }
4314
4315    private int getDesiredHeight() {
4316        return Math.max(getDesiredHeight(mLayout, true),
4317                        getDesiredHeight(mHintLayout, false));
4318    }
4319
4320    private int getDesiredHeight(Layout layout, boolean cap) {
4321        if (layout == null) {
4322            return 0;
4323        }
4324
4325        int linecount = layout.getLineCount();
4326        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
4327        int desired = layout.getLineTop(linecount);
4328
4329        final Drawables dr = mDrawables;
4330        if (dr != null) {
4331            desired = Math.max(desired, dr.mDrawableHeightLeft);
4332            desired = Math.max(desired, dr.mDrawableHeightRight);
4333        }
4334
4335        desired += pad;
4336
4337        if (mMaxMode == LINES) {
4338            /*
4339             * Don't cap the hint to a certain number of lines.
4340             * (Do cap it, though, if we have a maximum pixel height.)
4341             */
4342            if (cap) {
4343                if (linecount > mMaximum) {
4344                    desired = layout.getLineTop(mMaximum) +
4345                              layout.getBottomPadding();
4346
4347                    if (dr != null) {
4348                        desired = Math.max(desired, dr.mDrawableHeightLeft);
4349                        desired = Math.max(desired, dr.mDrawableHeightRight);
4350                    }
4351
4352                    desired += pad;
4353                    linecount = mMaximum;
4354                }
4355            }
4356        } else {
4357            desired = Math.min(desired, mMaximum);
4358        }
4359
4360        if (mMinMode == LINES) {
4361            if (linecount < mMinimum) {
4362                desired += getLineHeight() * (mMinimum - linecount);
4363            }
4364        } else {
4365            desired = Math.max(desired, mMinimum);
4366        }
4367
4368        // Check against our minimum height
4369        desired = Math.max(desired, getSuggestedMinimumHeight());
4370
4371        return desired;
4372    }
4373
4374    /**
4375     * Check whether a change to the existing text layout requires a
4376     * new view layout.
4377     */
4378    private void checkForResize() {
4379        boolean sizeChanged = false;
4380
4381        if (mLayout != null) {
4382            // Check if our width changed
4383            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
4384                sizeChanged = true;
4385                invalidate();
4386            }
4387
4388            // Check if our height changed
4389            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
4390                int desiredHeight = getDesiredHeight();
4391
4392                if (desiredHeight != this.getHeight()) {
4393                    sizeChanged = true;
4394                }
4395            } else if (mLayoutParams.height == LayoutParams.FILL_PARENT) {
4396                if (mDesiredHeightAtMeasure >= 0) {
4397                    int desiredHeight = getDesiredHeight();
4398
4399                    if (desiredHeight != mDesiredHeightAtMeasure) {
4400                        sizeChanged = true;
4401                    }
4402                }
4403            }
4404        }
4405
4406        if (sizeChanged) {
4407            requestLayout();
4408            // caller will have already invalidated
4409        }
4410    }
4411
4412    /**
4413     * Check whether entirely new text requires a new view layout
4414     * or merely a new text layout.
4415     */
4416    private void checkForRelayout() {
4417        // If we have a fixed width, we can just swap in a new text layout
4418        // if the text height stays the same or if the view height is fixed.
4419
4420        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
4421                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
4422                (mHint == null || mHintLayout != null) &&
4423                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
4424            // Static width, so try making a new text layout.
4425
4426            int oldht = mLayout.getHeight();
4427            int want = mLayout.getWidth();
4428            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
4429
4430            /*
4431             * No need to bring the text into view, since the size is not
4432             * changing (unless we do the requestLayout(), in which case it
4433             * will happen at measure).
4434             */
4435            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
4436                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
4437
4438            // In a fixed-height view, so use our new text layout.
4439            if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
4440                mLayoutParams.height != LayoutParams.FILL_PARENT) {
4441                invalidate();
4442                return;
4443            }
4444
4445            // Dynamic height, but height has stayed the same,
4446            // so use our new text layout.
4447            if (mLayout.getHeight() == oldht &&
4448                (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
4449                invalidate();
4450                return;
4451            }
4452
4453            // We lose: the height has changed and we have a dynamic height.
4454            // Request a new view layout using our new text layout.
4455            requestLayout();
4456            invalidate();
4457        } else {
4458            // Dynamic width, so we have no choice but to request a new
4459            // view layout with a new text layout.
4460
4461            nullLayouts();
4462            requestLayout();
4463            invalidate();
4464        }
4465    }
4466
4467    /**
4468     * Returns true if anything changed.
4469     */
4470    private boolean bringTextIntoView() {
4471        int line = 0;
4472        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
4473            line = mLayout.getLineCount() - 1;
4474        }
4475
4476        Layout.Alignment a = mLayout.getParagraphAlignment(line);
4477        int dir = mLayout.getParagraphDirection(line);
4478        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
4479        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
4480        int ht = mLayout.getHeight();
4481
4482        int scrollx, scrolly;
4483
4484        if (a == Layout.Alignment.ALIGN_CENTER) {
4485            /*
4486             * Keep centered if possible, or, if it is too wide to fit,
4487             * keep leading edge in view.
4488             */
4489
4490            int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
4491            int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
4492
4493            if (right - left < hspace) {
4494                scrollx = (right + left) / 2 - hspace / 2;
4495            } else {
4496                if (dir < 0) {
4497                    scrollx = right - hspace;
4498                } else {
4499                    scrollx = left;
4500                }
4501            }
4502        } else if (a == Layout.Alignment.ALIGN_NORMAL) {
4503            /*
4504             * Keep leading edge in view.
4505             */
4506
4507            if (dir < 0) {
4508                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
4509                scrollx = right - hspace;
4510            } else {
4511                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
4512            }
4513        } else /* a == Layout.Alignment.ALIGN_OPPOSITE */ {
4514            /*
4515             * Keep trailing edge in view.
4516             */
4517
4518            if (dir < 0) {
4519                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
4520            } else {
4521                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
4522                scrollx = right - hspace;
4523            }
4524        }
4525
4526        if (ht < vspace) {
4527            scrolly = 0;
4528        } else {
4529            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
4530                scrolly = ht - vspace;
4531            } else {
4532                scrolly = 0;
4533            }
4534        }
4535
4536        if (scrollx != mScrollX || scrolly != mScrollY) {
4537            scrollTo(scrollx, scrolly);
4538            return true;
4539        } else {
4540            return false;
4541        }
4542    }
4543
4544    /**
4545     * Returns true if anything changed.
4546     */
4547    private boolean bringPointIntoView(int offset) {
4548        boolean changed = false;
4549
4550        int line = mLayout.getLineForOffset(offset);
4551
4552        // FIXME: Is it okay to truncate this, or should we round?
4553        final int x = (int)mLayout.getPrimaryHorizontal(offset);
4554        final int top = mLayout.getLineTop(line);
4555        final int bottom = mLayout.getLineTop(line+1);
4556
4557        int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
4558        int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
4559        int ht = mLayout.getHeight();
4560
4561        int grav;
4562
4563        switch (mLayout.getParagraphAlignment(line)) {
4564            case ALIGN_NORMAL:
4565                grav = 1;
4566                break;
4567
4568            case ALIGN_OPPOSITE:
4569                grav = -1;
4570                break;
4571
4572            default:
4573                grav = 0;
4574        }
4575
4576        grav *= mLayout.getParagraphDirection(line);
4577
4578        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
4579        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
4580
4581        int hslack = (bottom - top) / 2;
4582        int vslack = hslack;
4583
4584        if (vslack > vspace / 4)
4585            vslack = vspace / 4;
4586        if (hslack > hspace / 4)
4587            hslack = hspace / 4;
4588
4589        int hs = mScrollX;
4590        int vs = mScrollY;
4591
4592        if (top - vs < vslack)
4593            vs = top - vslack;
4594        if (bottom - vs > vspace - vslack)
4595            vs = bottom - (vspace - vslack);
4596        if (ht - vs < vspace)
4597            vs = ht - vspace;
4598        if (0 - vs > 0)
4599            vs = 0;
4600
4601        if (grav != 0) {
4602            if (x - hs < hslack) {
4603                hs = x - hslack;
4604            }
4605            if (x - hs > hspace - hslack) {
4606                hs = x - (hspace - hslack);
4607            }
4608        }
4609
4610        if (grav < 0) {
4611            if (left - hs > 0)
4612                hs = left;
4613            if (right - hs < hspace)
4614                hs = right - hspace;
4615        } else if (grav > 0) {
4616            if (right - hs < hspace)
4617                hs = right - hspace;
4618            if (left - hs > 0)
4619                hs = left;
4620        } else /* grav == 0 */ {
4621            if (right - left <= hspace) {
4622                /*
4623                 * If the entire text fits, center it exactly.
4624                 */
4625                hs = left - (hspace - (right - left)) / 2;
4626            } else if (x > right - hslack) {
4627                /*
4628                 * If we are near the right edge, keep the right edge
4629                 * at the edge of the view.
4630                 */
4631                hs = right - hspace;
4632            } else if (x < left + hslack) {
4633                /*
4634                 * If we are near the left edge, keep the left edge
4635                 * at the edge of the view.
4636                 */
4637                hs = left;
4638            } else if (left > hs) {
4639                /*
4640                 * Is there whitespace visible at the left?  Fix it if so.
4641                 */
4642                hs = left;
4643            } else if (right < hs + hspace) {
4644                /*
4645                 * Is there whitespace visible at the right?  Fix it if so.
4646                 */
4647                hs = right - hspace;
4648            } else {
4649                /*
4650                 * Otherwise, float as needed.
4651                 */
4652                if (x - hs < hslack) {
4653                    hs = x - hslack;
4654                }
4655                if (x - hs > hspace - hslack) {
4656                    hs = x - (hspace - hslack);
4657                }
4658            }
4659        }
4660
4661        if (hs != mScrollX || vs != mScrollY) {
4662            if (mScroller == null) {
4663                scrollTo(hs, vs);
4664            } else {
4665                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
4666                int dx = hs - mScrollX;
4667                int dy = vs - mScrollY;
4668
4669                if (duration > ANIMATED_SCROLL_GAP) {
4670                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
4671                    invalidate();
4672                } else {
4673                    if (!mScroller.isFinished()) {
4674                        mScroller.abortAnimation();
4675                    }
4676
4677                    scrollBy(dx, dy);
4678                }
4679
4680                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
4681            }
4682
4683            changed = true;
4684        }
4685
4686        if (isFocused()) {
4687            // This offsets because getInterestingRect() is in terms of
4688            // viewport coordinates, but requestRectangleOnScreen()
4689            // is in terms of content coordinates.
4690
4691            Rect r = new Rect();
4692            getInterestingRect(r, x, top, bottom, line);
4693            r.offset(mScrollX, mScrollY);
4694
4695            if (requestRectangleOnScreen(r)) {
4696                changed = true;
4697            }
4698        }
4699
4700        return changed;
4701    }
4702
4703    @Override
4704    public void computeScroll() {
4705        if (mScroller != null) {
4706            if (mScroller.computeScrollOffset()) {
4707                mScrollX = mScroller.getCurrX();
4708                mScrollY = mScroller.getCurrY();
4709                postInvalidate();  // So we draw again
4710            }
4711        }
4712    }
4713
4714    private void getInterestingRect(Rect r, int h, int top, int bottom,
4715                                    int line) {
4716        int paddingTop = getExtendedPaddingTop();
4717        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4718            paddingTop += getVerticalOffset(false);
4719        }
4720        top += paddingTop;
4721        bottom += paddingTop;
4722        h += getCompoundPaddingLeft();
4723
4724        if (line == 0)
4725            top -= getExtendedPaddingTop();
4726        if (line == mLayout.getLineCount() - 1)
4727            bottom += getExtendedPaddingBottom();
4728
4729        r.set(h, top, h+1, bottom);
4730        r.offset(-mScrollX, -mScrollY);
4731    }
4732
4733    @Override
4734    public void debug(int depth) {
4735        super.debug(depth);
4736
4737        String output = debugIndent(depth);
4738        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
4739                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
4740                + "} ";
4741
4742        if (mText != null) {
4743
4744            output += "mText=\"" + mText + "\" ";
4745            if (mLayout != null) {
4746                output += "mLayout width=" + mLayout.getWidth()
4747                        + " height=" + mLayout.getHeight();
4748            }
4749        } else {
4750            output += "mText=NULL";
4751        }
4752        Log.d(VIEW_LOG_TAG, output);
4753    }
4754
4755    /**
4756     * Convenience for {@link Selection#getSelectionStart}.
4757     */
4758    public int getSelectionStart() {
4759        return Selection.getSelectionStart(getText());
4760    }
4761
4762    /**
4763     * Convenience for {@link Selection#getSelectionEnd}.
4764     */
4765    public int getSelectionEnd() {
4766        return Selection.getSelectionEnd(getText());
4767    }
4768
4769    /**
4770     * Return true iff there is a selection inside this text view.
4771     */
4772    public boolean hasSelection() {
4773        return getSelectionStart() != getSelectionEnd();
4774    }
4775
4776    /**
4777     * Sets the properties of this field (lines, horizontally scrolling,
4778     * transformation method) to be for a single-line input.
4779     *
4780     * @attr ref android.R.styleable#TextView_singleLine
4781     */
4782    public void setSingleLine() {
4783        setSingleLine(true);
4784    }
4785
4786    /**
4787     * If true, sets the properties of this field (lines, horizontally
4788     * scrolling, transformation method) to be for a single-line input;
4789     * if false, restores these to the default conditions.
4790     * Note that calling this with false restores default conditions,
4791     * not necessarily those that were in effect prior to calling
4792     * it with true.
4793     *
4794     * @attr ref android.R.styleable#TextView_singleLine
4795     */
4796    public void setSingleLine(boolean singleLine) {
4797        mSingleLine = singleLine;
4798        if ((mInputType&EditorInfo.TYPE_MASK_CLASS)
4799                == EditorInfo.TYPE_CLASS_TEXT) {
4800            if (singleLine) {
4801                mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
4802            } else {
4803                mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
4804            }
4805        }
4806
4807        if (singleLine) {
4808            setLines(1);
4809            setHorizontallyScrolling(true);
4810            setTransformationMethod(SingleLineTransformationMethod.
4811                                    getInstance());
4812        } else {
4813            setMaxLines(Integer.MAX_VALUE);
4814            setHorizontallyScrolling(false);
4815            setTransformationMethod(null);
4816        }
4817    }
4818
4819    /**
4820     * Causes words in the text that are longer than the view is wide
4821     * to be ellipsized instead of broken in the middle.  You may also
4822     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
4823     * to constrain the text toa single line.  Use <code>null</code>
4824     * to turn off ellipsizing.
4825     *
4826     * @attr ref android.R.styleable#TextView_ellipsize
4827     */
4828    public void setEllipsize(TextUtils.TruncateAt where) {
4829        mEllipsize = where;
4830
4831        if (mLayout != null) {
4832            nullLayouts();
4833            requestLayout();
4834            invalidate();
4835        }
4836    }
4837
4838    /**
4839     * Sets how many times to repeat the marquee animation. Only applied if the
4840     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
4841     *
4842     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
4843     */
4844    public void setMarqueeRepeatLimit(int marqueeLimit) {
4845        mMarqueeRepeatLimit = marqueeLimit;
4846    }
4847
4848    /**
4849     * Returns where, if anywhere, words that are longer than the view
4850     * is wide should be ellipsized.
4851     */
4852    @ViewDebug.ExportedProperty
4853    public TextUtils.TruncateAt getEllipsize() {
4854        return mEllipsize;
4855    }
4856
4857    /**
4858     * Set the TextView so that when it takes focus, all the text is
4859     * selected.
4860     *
4861     * @attr ref android.R.styleable#TextView_selectAllOnFocus
4862     */
4863    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
4864        mSelectAllOnFocus = selectAllOnFocus;
4865
4866        if (selectAllOnFocus && !(mText instanceof Spannable)) {
4867            setText(mText, BufferType.SPANNABLE);
4868        }
4869    }
4870
4871    /**
4872     * Set whether the cursor is visible.  The default is true.
4873     *
4874     * @attr ref android.R.styleable#TextView_cursorVisible
4875     */
4876    public void setCursorVisible(boolean visible) {
4877        mCursorVisible = visible;
4878        invalidate();
4879
4880        if (visible) {
4881            makeBlink();
4882        } else if (mBlink != null) {
4883            mBlink.removeCallbacks(mBlink);
4884        }
4885    }
4886
4887    private boolean canMarquee() {
4888        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
4889        return width > 0 && mLayout.getLineWidth(0) > width;
4890    }
4891
4892    private void startMarquee() {
4893        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
4894                getLineCount() == 1 && canMarquee()) {
4895            if (mMarquee == null) mMarquee = new Marquee(this);
4896            mMarquee.start(mMarqueeRepeatLimit);
4897        }
4898    }
4899
4900    private void stopMarquee() {
4901        if (mMarquee != null && !mMarquee.isStopped()) {
4902            mMarquee.stop();
4903        }
4904    }
4905
4906    private void startStopMarquee(boolean start) {
4907        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4908            if (start) {
4909                startMarquee();
4910            } else {
4911                stopMarquee();
4912            }
4913        }
4914    }
4915
4916    private static final class Marquee extends Handler {
4917        // TODO: Add an option to configure this
4918        private static final int MARQUEE_DELAY = 1200;
4919        private static final int MARQUEE_RESTART_DELAY = 1200;
4920        private static final int MARQUEE_RESOLUTION = 1000 / 30;
4921        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
4922
4923        private static final byte MARQUEE_STOPPED = 0x0;
4924        private static final byte MARQUEE_STARTING = 0x1;
4925        private static final byte MARQUEE_RUNNING = 0x2;
4926
4927        private static final int MESSAGE_START = 0x1;
4928        private static final int MESSAGE_TICK = 0x2;
4929        private static final int MESSAGE_RESTART = 0x3;
4930
4931        private final WeakReference<TextView> mView;
4932
4933        private byte mStatus = MARQUEE_STOPPED;
4934        private float mScrollUnit;
4935        private float mMaxScroll;
4936        private int mRepeatLimit;
4937
4938        float mScroll;
4939
4940        Marquee(TextView v) {
4941            mView = new WeakReference<TextView>(v);
4942        }
4943
4944        @Override
4945        public void handleMessage(Message msg) {
4946            switch (msg.what) {
4947                case MESSAGE_START:
4948                    mStatus = MARQUEE_RUNNING;
4949                    tick();
4950                    break;
4951                case MESSAGE_TICK:
4952                    tick();
4953                    break;
4954                case MESSAGE_RESTART:
4955                    if (mStatus == MARQUEE_RUNNING) {
4956                        if (mRepeatLimit >= 0) {
4957                            mRepeatLimit--;
4958                        }
4959                        start(mRepeatLimit);
4960                    }
4961                    break;
4962            }
4963        }
4964
4965        void tick() {
4966            if (mStatus != MARQUEE_RUNNING) {
4967                return;
4968            }
4969
4970            removeMessages(MESSAGE_TICK);
4971
4972            final TextView textView = mView.get();
4973            if (textView != null && (textView.isFocused() || textView.isSelected())) {
4974                mScroll += mScrollUnit;
4975                if (mScroll > mMaxScroll) {
4976                    mScroll = mMaxScroll;
4977                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
4978                } else {
4979                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
4980                }
4981                textView.invalidate();
4982            }
4983        }
4984
4985        void stop() {
4986            mStatus = MARQUEE_STOPPED;
4987            removeMessages(MESSAGE_START);
4988            removeMessages(MESSAGE_RESTART);
4989            removeMessages(MESSAGE_TICK);
4990            resetScroll();
4991        }
4992
4993        private void resetScroll() {
4994            mScroll = 0.0f;
4995            final TextView textView = mView.get();
4996            if (textView != null) textView.invalidate();
4997        }
4998
4999        void start(int repeatLimit) {
5000            if (repeatLimit == 0) {
5001                stop();
5002                return;
5003            }
5004            mRepeatLimit = repeatLimit;
5005            final TextView textView = mView.get();
5006            if (textView != null && textView.mLayout != null) {
5007                mStatus = MARQUEE_STARTING;
5008                mScroll = 0.0f;
5009                mScrollUnit = MARQUEE_PIXELS_PER_SECOND / (float) MARQUEE_RESOLUTION;
5010                mMaxScroll = textView.mLayout.getLineWidth(0) - (textView.getWidth() -
5011                        textView.getCompoundPaddingLeft() - textView.getCompoundPaddingRight());
5012                textView.invalidate();
5013                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
5014            }
5015        }
5016
5017        boolean isRunning() {
5018            return mStatus == MARQUEE_RUNNING;
5019        }
5020
5021        boolean isStopped() {
5022            return mStatus == MARQUEE_STOPPED;
5023        }
5024    }
5025
5026    /**
5027     * This method is called when the text is changed, in case any
5028     * subclasses would like to know.
5029     *
5030     * @param text The text the TextView is displaying.
5031     * @param start The offset of the start of the range of the text
5032     *              that was modified.
5033     * @param before The offset of the former end of the range of the
5034     *               text that was modified.  If text was simply inserted,
5035     *               this will be the same as <code>start</code>.
5036     *               If text was replaced with new text or deleted, the
5037     *               length of the old text was <code>before-start</code>.
5038     * @param after The offset of the end of the range of the text
5039     *              that was modified.  If text was simply deleted,
5040     *              this will be the same as <code>start</code>.
5041     *              If text was replaced with new text or inserted,
5042     *              the length of the new text is <code>after-start</code>.
5043     */
5044    protected void onTextChanged(CharSequence text,
5045                                 int start, int before, int after) {
5046    }
5047
5048    /**
5049     * Adds a TextWatcher to the list of those whose methods are called
5050     * whenever this TextView's text changes.
5051     * <p>
5052     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
5053     * not called after {@link #setText} calls.  Now, doing {@link #setText}
5054     * if there are any text changed listeners forces the buffer type to
5055     * Editable if it would not otherwise be and does call this method.
5056     */
5057    public void addTextChangedListener(TextWatcher watcher) {
5058        if (mListeners == null) {
5059            mListeners = new ArrayList<TextWatcher>();
5060        }
5061
5062        mListeners.add(watcher);
5063    }
5064
5065    /**
5066     * Removes the specified TextWatcher from the list of those whose
5067     * methods are called
5068     * whenever this TextView's text changes.
5069     */
5070    public void removeTextChangedListener(TextWatcher watcher) {
5071        if (mListeners != null) {
5072            int i = mListeners.indexOf(watcher);
5073
5074            if (i >= 0) {
5075                mListeners.remove(i);
5076            }
5077        }
5078    }
5079
5080    private void sendBeforeTextChanged(CharSequence text, int start, int before,
5081                                   int after) {
5082        if (mListeners != null) {
5083            final ArrayList<TextWatcher> list = mListeners;
5084            final int count = list.size();
5085            for (int i = 0; i < count; i++) {
5086                list.get(i).beforeTextChanged(text, start, before, after);
5087            }
5088        }
5089    }
5090
5091    /**
5092     * Not private so it can be called from an inner class without going
5093     * through a thunk.
5094     */
5095    void sendOnTextChanged(CharSequence text, int start, int before,
5096                                   int after) {
5097        if (mListeners != null) {
5098            final ArrayList<TextWatcher> list = mListeners;
5099            final int count = list.size();
5100            for (int i = 0; i < count; i++) {
5101                list.get(i).onTextChanged(text, start, before, after);
5102            }
5103        }
5104    }
5105
5106    /**
5107     * Not private so it can be called from an inner class without going
5108     * through a thunk.
5109     */
5110    void sendAfterTextChanged(Editable text) {
5111        if (mListeners != null) {
5112            final ArrayList<TextWatcher> list = mListeners;
5113            final int count = list.size();
5114            for (int i = 0; i < count; i++) {
5115                list.get(i).afterTextChanged(text);
5116            }
5117        }
5118    }
5119
5120    /**
5121     * Not private so it can be called from an inner class without going
5122     * through a thunk.
5123     */
5124    void handleTextChanged(CharSequence buffer, int start,
5125            int before, int after) {
5126        invalidate();
5127
5128        int curs = Selection.getSelectionStart(buffer);
5129
5130        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) ==
5131                             Gravity.BOTTOM) {
5132            registerForPreDraw();
5133        }
5134
5135        if (curs >= 0) {
5136            mHighlightPathBogus = true;
5137
5138            if (isFocused()) {
5139                mShowCursor = SystemClock.uptimeMillis();
5140                makeBlink();
5141            }
5142        }
5143
5144        checkForResize();
5145
5146        sendOnTextChanged(buffer, start, before, after);
5147        onTextChanged(buffer, start, before, after);
5148    }
5149
5150    /**
5151     * Not private so it can be called from an inner class without going
5152     * through a thunk.
5153     */
5154    void spanChange(Spanned buf, Object what, int o, int n) {
5155        // XXX Make the start and end move together if this ends up
5156        // spending too much time invalidating.
5157
5158        if (what == Selection.SELECTION_END) {
5159            mHighlightPathBogus = true;
5160
5161            if (!isFocused()) {
5162                mSelectionMoved = true;
5163            }
5164
5165            if (o >= 0 || n >= 0) {
5166                invalidateCursor(Selection.getSelectionStart(buf), o, n);
5167                registerForPreDraw();
5168
5169                if (isFocused()) {
5170                    mShowCursor = SystemClock.uptimeMillis();
5171                    makeBlink();
5172                }
5173            }
5174        }
5175
5176        if (what == Selection.SELECTION_START) {
5177            mHighlightPathBogus = true;
5178
5179            if (!isFocused()) {
5180                mSelectionMoved = true;
5181            }
5182
5183            if (o >= 0 || n >= 0) {
5184                invalidateCursor(Selection.getSelectionEnd(buf), o, n);
5185            }
5186        }
5187
5188        if (what instanceof UpdateAppearance ||
5189            what instanceof ParagraphStyle) {
5190            invalidate();
5191            mHighlightPathBogus = true;
5192            checkForResize();
5193        }
5194
5195        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
5196            mHighlightPathBogus = true;
5197
5198            if (Selection.getSelectionStart(buf) >= 0) {
5199                invalidateCursor();
5200            }
5201        }
5202    }
5203
5204    private class ChangeWatcher
5205    implements TextWatcher, SpanWatcher {
5206        public void beforeTextChanged(CharSequence buffer, int start,
5207                                      int before, int after) {
5208            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
5209        }
5210
5211        public void onTextChanged(CharSequence buffer, int start,
5212                                  int before, int after) {
5213            TextView.this.handleTextChanged(buffer, start, before, after);
5214        }
5215
5216        public void afterTextChanged(Editable buffer) {
5217            TextView.this.sendAfterTextChanged(buffer);
5218
5219            if (MetaKeyKeyListener.getMetaState(buffer,
5220                                 MetaKeyKeyListener.META_SELECTING) != 0) {
5221                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
5222            }
5223
5224            TextView.this.reportExtractedText();
5225        }
5226
5227        public void onSpanChanged(Spannable buf,
5228                                  Object what, int s, int e, int st, int en) {
5229            TextView.this.spanChange(buf, what, s, st);
5230        }
5231
5232        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
5233            TextView.this.spanChange(buf, what, -1, s);
5234        }
5235
5236        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
5237            TextView.this.spanChange(buf, what, s, -1);
5238        }
5239    }
5240
5241    private void makeBlink() {
5242        if (!mCursorVisible) {
5243            if (mBlink != null) {
5244                mBlink.removeCallbacks(mBlink);
5245            }
5246
5247            return;
5248        }
5249
5250        if (mBlink == null)
5251            mBlink = new Blink(this);
5252
5253        mBlink.removeCallbacks(mBlink);
5254        mBlink.postAtTime(mBlink, mShowCursor + BLINK);
5255    }
5256
5257    @Override
5258    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
5259        mShowCursor = SystemClock.uptimeMillis();
5260
5261        if (focused) {
5262            int selStart = getSelectionStart();
5263            int selEnd = getSelectionEnd();
5264
5265            if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) {
5266                boolean selMoved = mSelectionMoved;
5267
5268                if (mMovement != null) {
5269                    mMovement.onTakeFocus(this, (Spannable) mText, direction);
5270                }
5271
5272                if (mSelectAllOnFocus) {
5273                    Selection.setSelection((Spannable) mText, 0, mText.length());
5274                }
5275
5276                if (selMoved && selStart >= 0 && selEnd >= 0) {
5277                    /*
5278                     * Someone intentionally set the selection, so let them
5279                     * do whatever it is that they wanted to do instead of
5280                     * the default on-focus behavior.  We reset the selection
5281                     * here instead of just skipping the onTakeFocus() call
5282                     * because some movement methods do something other than
5283                     * just setting the selection in theirs and we still
5284                     * need to go through that path.
5285                     */
5286
5287                    Selection.setSelection((Spannable) mText, selStart, selEnd);
5288                }
5289            }
5290
5291            mFrozenWithFocus = false;
5292            mSelectionMoved = false;
5293
5294            if (mText instanceof Spannable) {
5295                Spannable sp = (Spannable) mText;
5296                MetaKeyKeyListener.resetMetaState(sp);
5297            }
5298
5299            makeBlink();
5300
5301            if (mError != null) {
5302                showError();
5303            }
5304        } else {
5305            if (mError != null) {
5306                hideError();
5307            }
5308            // Don't leave us in the middle of a batch edit.
5309            onEndBatchEdit();
5310        }
5311
5312        startStopMarquee(focused);
5313
5314        if (mTransformation != null) {
5315            mTransformation.onFocusChanged(this, mText, focused, direction,
5316                                           previouslyFocusedRect);
5317        }
5318
5319        super.onFocusChanged(focused, direction, previouslyFocusedRect);
5320    }
5321
5322    @Override
5323    public void onWindowFocusChanged(boolean hasWindowFocus) {
5324        super.onWindowFocusChanged(hasWindowFocus);
5325
5326        if (hasWindowFocus) {
5327            if (mBlink != null) {
5328                mBlink.uncancel();
5329
5330                if (isFocused()) {
5331                    mShowCursor = SystemClock.uptimeMillis();
5332                    makeBlink();
5333                }
5334            }
5335        } else {
5336            if (mBlink != null) {
5337                mBlink.cancel();
5338            }
5339            // Don't leave us in the middle of a batch edit.
5340            onEndBatchEdit();
5341        }
5342
5343        startStopMarquee(hasWindowFocus);
5344    }
5345
5346    @Override
5347    public void setSelected(boolean selected) {
5348        boolean wasSelected = isSelected();
5349
5350        super.setSelected(selected);
5351
5352        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5353            if (selected) {
5354                startMarquee();
5355            } else {
5356                stopMarquee();
5357            }
5358        }
5359    }
5360
5361    @Override
5362    public boolean onTouchEvent(MotionEvent event) {
5363        final boolean superResult = super.onTouchEvent(event);
5364
5365        /*
5366         * Don't handle the release after a long press, because it will
5367         * move the selection away from whatever the menu action was
5368         * trying to affect.
5369         */
5370        if (mEatTouchRelease && event.getAction() == MotionEvent.ACTION_UP) {
5371            mEatTouchRelease = false;
5372            return superResult;
5373        }
5374
5375        if (mMovement != null && mText instanceof Spannable &&
5376            mLayout != null) {
5377            boolean moved = mMovement.onTouchEvent(this, (Spannable) mText, event);
5378
5379            if (mText instanceof Editable && onCheckIsTextEditor()) {
5380                if (event.getAction() == MotionEvent.ACTION_UP && isFocused()) {
5381                    InputMethodManager imm = (InputMethodManager)
5382                            getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
5383                    imm.showSoftInput(this, 0);
5384                }
5385            }
5386
5387            if (moved) {
5388                return true;
5389            }
5390        }
5391
5392        return superResult;
5393    }
5394
5395    @Override
5396    public boolean onTrackballEvent(MotionEvent event) {
5397        if (mMovement != null && mText instanceof Spannable &&
5398            mLayout != null) {
5399            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
5400                return true;
5401            }
5402        }
5403
5404        return super.onTrackballEvent(event);
5405    }
5406
5407    public void setScroller(Scroller s) {
5408        mScroller = s;
5409    }
5410
5411    private static class Blink extends Handler
5412            implements Runnable {
5413        private WeakReference<TextView> mView;
5414        private boolean mCancelled;
5415
5416        public Blink(TextView v) {
5417            mView = new WeakReference<TextView>(v);
5418        }
5419
5420        public void run() {
5421            if (mCancelled) {
5422                return;
5423            }
5424
5425            removeCallbacks(Blink.this);
5426
5427            TextView tv = mView.get();
5428
5429            if (tv != null && tv.isFocused()) {
5430                int st = Selection.getSelectionStart(tv.mText);
5431                int en = Selection.getSelectionEnd(tv.mText);
5432
5433                if (st == en && st >= 0 && en >= 0) {
5434                    if (tv.mLayout != null) {
5435                        tv.invalidateCursorPath();
5436                    }
5437
5438                    postAtTime(this, SystemClock.uptimeMillis() + BLINK);
5439                }
5440            }
5441        }
5442
5443        void cancel() {
5444            if (!mCancelled) {
5445                removeCallbacks(Blink.this);
5446                mCancelled = true;
5447            }
5448        }
5449
5450        void uncancel() {
5451            mCancelled = false;
5452        }
5453    }
5454
5455    @Override
5456    protected float getLeftFadingEdgeStrength() {
5457        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5458            if (mMarquee != null && !mMarquee.isStopped()) {
5459                final Marquee marquee = mMarquee;
5460                return marquee.mScroll / getHorizontalFadingEdgeLength();
5461            } else if (getLineCount() == 1) {
5462                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
5463                    case Gravity.LEFT:
5464                        return 0.0f;
5465                    case Gravity.RIGHT:
5466                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
5467                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
5468                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
5469                    case Gravity.CENTER_HORIZONTAL:
5470                        return 0.0f;
5471                }
5472            }
5473        }
5474        return super.getLeftFadingEdgeStrength();
5475    }
5476
5477    @Override
5478    protected float getRightFadingEdgeStrength() {
5479        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5480            if (mMarquee != null && !mMarquee.isStopped()) {
5481                final Marquee marquee = mMarquee;
5482                return (marquee.mMaxScroll - marquee.mScroll) / getHorizontalFadingEdgeLength();
5483            } else if (getLineCount() == 1) {
5484                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
5485                    case Gravity.LEFT:
5486                        return (mLayout.getLineRight(0) - mScrollX - (mRight - mLeft) -
5487                                getCompoundPaddingLeft() - getCompoundPaddingRight()) /
5488                                getHorizontalFadingEdgeLength();
5489                    case Gravity.RIGHT:
5490                        return 0.0f;
5491                    case Gravity.CENTER_HORIZONTAL:
5492                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
5493                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
5494                                getHorizontalFadingEdgeLength();
5495                }
5496            }
5497        }
5498        return super.getRightFadingEdgeStrength();
5499    }
5500
5501    @Override
5502    protected int computeHorizontalScrollRange() {
5503        if (mLayout != null)
5504            return mLayout.getWidth();
5505
5506        return super.computeHorizontalScrollRange();
5507    }
5508
5509    @Override
5510    protected int computeVerticalScrollRange() {
5511        if (mLayout != null)
5512            return mLayout.getHeight();
5513
5514        return super.computeVerticalScrollRange();
5515    }
5516
5517    public enum BufferType {
5518        NORMAL, SPANNABLE, EDITABLE,
5519    }
5520
5521    /**
5522     * Returns the TextView_textColor attribute from the
5523     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
5524     * from the TextView_textAppearance attribute, if TextView_textColor
5525     * was not set directly.
5526     */
5527    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
5528        ColorStateList colors;
5529        colors = attrs.getColorStateList(com.android.internal.R.styleable.
5530                                         TextView_textColor);
5531
5532        if (colors == null) {
5533            int ap = attrs.getResourceId(com.android.internal.R.styleable.
5534                                         TextView_textAppearance, -1);
5535            if (ap != -1) {
5536                TypedArray appearance;
5537                appearance = context.obtainStyledAttributes(ap,
5538                                            com.android.internal.R.styleable.TextAppearance);
5539                colors = appearance.getColorStateList(com.android.internal.R.styleable.
5540                                                  TextAppearance_textColor);
5541                appearance.recycle();
5542            }
5543        }
5544
5545        return colors;
5546    }
5547
5548    /**
5549     * Returns the default color from the TextView_textColor attribute
5550     * from the AttributeSet, if set, or the default color from the
5551     * TextAppearance_textColor from the TextView_textAppearance attribute,
5552     * if TextView_textColor was not set directly.
5553     */
5554    public static int getTextColor(Context context,
5555                                   TypedArray attrs,
5556                                   int def) {
5557        ColorStateList colors = getTextColors(context, attrs);
5558
5559        if (colors == null) {
5560            return def;
5561        } else {
5562            return colors.getDefaultColor();
5563        }
5564    }
5565
5566    @Override
5567    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
5568        switch (keyCode) {
5569        case KeyEvent.KEYCODE_A:
5570            if (canSelectAll()) {
5571                return onMenu(ID_SELECT_ALL);
5572            }
5573
5574            break;
5575
5576        case KeyEvent.KEYCODE_X:
5577            if (canCut()) {
5578                return onMenu(ID_CUT);
5579            }
5580
5581            break;
5582
5583        case KeyEvent.KEYCODE_C:
5584            if (canCopy()) {
5585                return onMenu(ID_COPY);
5586            }
5587
5588            break;
5589
5590        case KeyEvent.KEYCODE_V:
5591            if (canPaste()) {
5592                return onMenu(ID_PASTE);
5593            }
5594
5595            break;
5596        }
5597
5598        return super.onKeyShortcut(keyCode, event);
5599    }
5600
5601    private boolean canSelectAll() {
5602        if (mText instanceof Spannable && mText.length() != 0 &&
5603            mMovement != null && mMovement.canSelectArbitrarily()) {
5604            return true;
5605        }
5606
5607        return false;
5608    }
5609
5610    private boolean canSelectText() {
5611        if (mText instanceof Spannable && mText.length() != 0 &&
5612            mMovement != null && mMovement.canSelectArbitrarily()) {
5613            return true;
5614        }
5615
5616        return false;
5617    }
5618
5619    private boolean canCut() {
5620        if (mTransformation instanceof PasswordTransformationMethod) {
5621            return false;
5622        }
5623
5624        if (mText.length() > 0 && getSelectionStart() >= 0) {
5625            if (mText instanceof Editable && mInput != null) {
5626                return true;
5627            }
5628        }
5629
5630        return false;
5631    }
5632
5633    private boolean canCopy() {
5634        if (mTransformation instanceof PasswordTransformationMethod) {
5635            return false;
5636        }
5637
5638        if (mText.length() > 0 && getSelectionStart() >= 0) {
5639            return true;
5640        }
5641
5642        return false;
5643    }
5644
5645    private boolean canPaste() {
5646        if (mText instanceof Editable && mInput != null &&
5647            getSelectionStart() >= 0 && getSelectionEnd() >= 0) {
5648            ClipboardManager clip = (ClipboardManager)getContext()
5649                    .getSystemService(Context.CLIPBOARD_SERVICE);
5650            if (clip.hasText()) {
5651                return true;
5652            }
5653        }
5654
5655        return false;
5656    }
5657
5658    @Override
5659    protected void onCreateContextMenu(ContextMenu menu) {
5660        super.onCreateContextMenu(menu);
5661        boolean added = false;
5662
5663        if (!isFocused()) {
5664            if (isFocusable() && mInput != null) {
5665                if (canCopy()) {
5666                    MenuHandler handler = new MenuHandler();
5667                    int name = com.android.internal.R.string.copyAll;
5668
5669                    menu.add(0, ID_COPY, 0, name).
5670                        setOnMenuItemClickListener(handler).
5671                        setAlphabeticShortcut('c');
5672                    menu.setHeaderTitle(com.android.internal.R.string.
5673                        editTextMenuTitle);
5674                }
5675            }
5676
5677            return;
5678        }
5679
5680        MenuHandler handler = new MenuHandler();
5681
5682        if (canSelectAll()) {
5683            menu.add(0, ID_SELECT_ALL, 0,
5684                    com.android.internal.R.string.selectAll).
5685                setOnMenuItemClickListener(handler).
5686                setAlphabeticShortcut('a');
5687            added = true;
5688        }
5689
5690        boolean selection = getSelectionStart() != getSelectionEnd();
5691
5692        if (canSelectText()) {
5693            if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) {
5694                menu.add(0, ID_STOP_SELECTING_TEXT, 0,
5695                        com.android.internal.R.string.stopSelectingText).
5696                    setOnMenuItemClickListener(handler);
5697                added = true;
5698            } else {
5699                menu.add(0, ID_SELECT_TEXT, 0,
5700                        com.android.internal.R.string.selectText).
5701                    setOnMenuItemClickListener(handler);
5702                added = true;
5703            }
5704        }
5705
5706        if (canCut()) {
5707            int name;
5708            if (selection) {
5709                name = com.android.internal.R.string.cut;
5710            } else {
5711                name = com.android.internal.R.string.cutAll;
5712            }
5713
5714            menu.add(0, ID_CUT, 0, name).
5715                setOnMenuItemClickListener(handler).
5716                setAlphabeticShortcut('x');
5717            added = true;
5718        }
5719
5720        if (canCopy()) {
5721            int name;
5722            if (selection) {
5723                name = com.android.internal.R.string.copy;
5724            } else {
5725                name = com.android.internal.R.string.copyAll;
5726            }
5727
5728            menu.add(0, ID_COPY, 0, name).
5729                setOnMenuItemClickListener(handler).
5730                setAlphabeticShortcut('c');
5731            added = true;
5732        }
5733
5734        if (canPaste()) {
5735            menu.add(0, ID_PASTE, 0, com.android.internal.R.string.paste).
5736                    setOnMenuItemClickListener(handler).
5737                    setAlphabeticShortcut('v');
5738            added = true;
5739        }
5740
5741        if (mText instanceof Spanned) {
5742            int selStart = getSelectionStart();
5743            int selEnd = getSelectionEnd();
5744
5745            int min = Math.min(selStart, selEnd);
5746            int max = Math.max(selStart, selEnd);
5747
5748            URLSpan[] urls = ((Spanned) mText).getSpans(min, max,
5749                                                        URLSpan.class);
5750            if (urls.length == 1) {
5751                menu.add(0, ID_COPY_URL, 0,
5752                         com.android.internal.R.string.copyUrl).
5753                            setOnMenuItemClickListener(handler);
5754                added = true;
5755            }
5756        }
5757
5758        InputMethodManager imm = InputMethodManager.peekInstance();
5759        if (imm != null && imm.isActive(this)) {
5760            menu.add(1, ID_SWITCH_IME, 0, com.android.internal.R.string.inputMethod).
5761                    setOnMenuItemClickListener(handler);
5762            added = true;
5763        }
5764
5765        if (added) {
5766            menu.setHeaderTitle(com.android.internal.R.string.editTextMenuTitle);
5767        }
5768    }
5769
5770    private static final int ID_SELECT_ALL = com.android.internal.R.id.selectAll;
5771    private static final int ID_SELECT_TEXT = com.android.internal.R.id.selectText;
5772    private static final int ID_STOP_SELECTING_TEXT = com.android.internal.R.id.stopSelectingText;
5773    private static final int ID_CUT = com.android.internal.R.id.cut;
5774    private static final int ID_COPY = com.android.internal.R.id.copy;
5775    private static final int ID_PASTE = com.android.internal.R.id.paste;
5776    private static final int ID_COPY_URL = com.android.internal.R.id.copyUrl;
5777    private static final int ID_SWITCH_IME = com.android.internal.R.id.inputMethod;
5778
5779    private class MenuHandler implements MenuItem.OnMenuItemClickListener {
5780        public boolean onMenuItemClick(MenuItem item) {
5781            return onMenu(item.getItemId());
5782        }
5783    }
5784
5785    private boolean onMenu(int id) {
5786        int selStart = getSelectionStart();
5787        int selEnd = getSelectionEnd();
5788
5789        if (!isFocused()) {
5790            selStart = 0;
5791            selEnd = mText.length();
5792        }
5793
5794        int min = Math.min(selStart, selEnd);
5795        int max = Math.max(selStart, selEnd);
5796
5797        if (min < 0) {
5798            min = 0;
5799        }
5800        if (max < 0) {
5801            max = 0;
5802        }
5803
5804        ClipboardManager clip = (ClipboardManager)getContext()
5805                .getSystemService(Context.CLIPBOARD_SERVICE);
5806
5807        switch (id) {
5808            case ID_SELECT_ALL:
5809                Selection.setSelection((Spannable) mText, 0,
5810                                        mText.length());
5811                return true;
5812
5813            case ID_SELECT_TEXT:
5814                MetaKeyKeyListener.startSelecting(this, (Spannable) mText);
5815                return true;
5816
5817            case ID_STOP_SELECTING_TEXT:
5818                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
5819                Selection.setSelection((Spannable) mText, getSelectionEnd());
5820                return true;
5821
5822            case ID_CUT:
5823                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
5824
5825                if (min == max) {
5826                    min = 0;
5827                    max = mText.length();
5828                }
5829
5830                clip.setText(mTransformed.subSequence(min, max));
5831                ((Editable) mText).delete(min, max);
5832                return true;
5833
5834            case ID_COPY:
5835                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
5836
5837                if (min == max) {
5838                    min = 0;
5839                    max = mText.length();
5840                }
5841
5842                clip.setText(mTransformed.subSequence(min, max));
5843                return true;
5844
5845            case ID_PASTE:
5846                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
5847
5848                CharSequence paste = clip.getText();
5849
5850                if (paste != null) {
5851                    Selection.setSelection((Spannable) mText, max);
5852                    ((Editable) mText).replace(min, max, paste);
5853                }
5854
5855                return true;
5856
5857            case ID_COPY_URL:
5858                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
5859
5860                URLSpan[] urls = ((Spanned) mText).getSpans(min, max,
5861                                                       URLSpan.class);
5862                if (urls.length == 1) {
5863                    clip.setText(urls[0].getURL());
5864                }
5865
5866                return true;
5867
5868            case ID_SWITCH_IME:
5869                InputMethodManager imm = InputMethodManager.peekInstance();
5870                if (imm != null) {
5871                    imm.showInputMethodPicker();
5872                }
5873                return true;
5874            }
5875
5876        return false;
5877    }
5878
5879    public boolean performLongClick() {
5880        if (super.performLongClick()) {
5881            mEatTouchRelease = true;
5882            return true;
5883        }
5884
5885        return false;
5886    }
5887
5888    private boolean mEatTouchRelease = false;
5889
5890    @ViewDebug.ExportedProperty
5891    private CharSequence            mText;
5892    private CharSequence            mTransformed;
5893    private BufferType              mBufferType = BufferType.NORMAL;
5894
5895    private int                     mInputType = EditorInfo.TYPE_NULL;
5896    private CharSequence            mHint;
5897    private Layout                  mHintLayout;
5898
5899    private KeyListener             mInput;
5900
5901    private MovementMethod          mMovement;
5902    private TransformationMethod    mTransformation;
5903    private ChangeWatcher           mChangeWatcher;
5904
5905    private ArrayList<TextWatcher>  mListeners = null;
5906
5907    // display attributes
5908    private TextPaint mTextPaint;
5909    private Paint                   mHighlightPaint;
5910    private int                     mHighlightColor = 0xFFBBDDFF;
5911    private Layout                  mLayout;
5912
5913    private long                    mShowCursor;
5914    private Blink                   mBlink;
5915    private boolean                 mCursorVisible = true;
5916
5917    private boolean                 mSelectAllOnFocus = false;
5918
5919    private int                     mGravity = Gravity.TOP | Gravity.LEFT;
5920    private boolean                 mHorizontallyScrolling;
5921
5922    private int                     mAutoLinkMask;
5923    private boolean                 mLinksClickable = true;
5924
5925    private float                   mSpacingMult = 1;
5926    private float                   mSpacingAdd = 0;
5927
5928    private static final int        LINES = 1;
5929    private static final int        EMS = LINES;
5930    private static final int        PIXELS = 2;
5931
5932    private int                     mMaximum = Integer.MAX_VALUE;
5933    private int                     mMaxMode = LINES;
5934    private int                     mMinimum = 0;
5935    private int                     mMinMode = LINES;
5936
5937    private int                     mMaxWidth = Integer.MAX_VALUE;
5938    private int                     mMaxWidthMode = PIXELS;
5939    private int                     mMinWidth = 0;
5940    private int                     mMinWidthMode = PIXELS;
5941
5942    private boolean                 mSingleLine;
5943    private int                     mDesiredHeightAtMeasure = -1;
5944    private boolean                 mIncludePad = true;
5945
5946    // tmp primitives, so we don't alloc them on each draw
5947    private Path                    mHighlightPath;
5948    private boolean                 mHighlightPathBogus = true;
5949    private static final RectF      sTempRect = new RectF();
5950
5951    // XXX should be much larger
5952    private static final int        VERY_WIDE = 16384;
5953
5954    private static final int        BLINK = 500;
5955
5956    private static final int ANIMATED_SCROLL_GAP = 250;
5957    private long mLastScroll;
5958    private Scroller mScroller = null;
5959
5960    private BoringLayout.Metrics mBoring;
5961    private BoringLayout.Metrics mHintBoring;
5962
5963    private BoringLayout mSavedLayout, mSavedHintLayout;
5964
5965    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
5966    private InputFilter[] mFilters = NO_FILTERS;
5967    private static final Spanned EMPTY_SPANNED = new SpannedString("");
5968}
5969