TextView.java revision 464fb74e28b6d76d5e741abcdbb714eea2d9b4d1 
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.widget;
18
19import com.android.internal.util.FastMath;
20import com.android.internal.widget.EditableInputConnection;
21
22import org.xmlpull.v1.XmlPullParserException;
23
24import android.content.ClipData;
25import android.content.ClipboardManager;
26import android.content.Context;
27import android.content.pm.PackageManager;
28import android.content.res.ColorStateList;
29import android.content.res.Resources;
30import android.content.res.TypedArray;
31import android.content.res.XmlResourceParser;
32import android.graphics.Canvas;
33import android.graphics.Paint;
34import android.graphics.Path;
35import android.graphics.Rect;
36import android.graphics.RectF;
37import android.graphics.Typeface;
38import android.graphics.drawable.Drawable;
39import android.inputmethodservice.ExtractEditText;
40import android.net.Uri;
41import android.os.Bundle;
42import android.os.Handler;
43import android.os.Message;
44import android.os.Parcel;
45import android.os.Parcelable;
46import android.os.ResultReceiver;
47import android.os.SystemClock;
48import android.text.BoringLayout;
49import android.text.DynamicLayout;
50import android.text.Editable;
51import android.text.GetChars;
52import android.text.GraphicsOperations;
53import android.text.InputFilter;
54import android.text.InputType;
55import android.text.Layout;
56import android.text.ParcelableSpan;
57import android.text.Selection;
58import android.text.SpanWatcher;
59import android.text.Spannable;
60import android.text.SpannableString;
61import android.text.Spanned;
62import android.text.SpannedString;
63import android.text.StaticLayout;
64import android.text.TextPaint;
65import android.text.TextUtils;
66import android.text.TextWatcher;
67import android.text.method.ArrowKeyMovementMethod;
68import android.text.method.DateKeyListener;
69import android.text.method.DateTimeKeyListener;
70import android.text.method.DialerKeyListener;
71import android.text.method.DigitsKeyListener;
72import android.text.method.KeyListener;
73import android.text.method.LinkMovementMethod;
74import android.text.method.MetaKeyKeyListener;
75import android.text.method.MovementMethod;
76import android.text.method.PasswordTransformationMethod;
77import android.text.method.SingleLineTransformationMethod;
78import android.text.method.TextKeyListener;
79import android.text.method.TimeKeyListener;
80import android.text.method.TransformationMethod;
81import android.text.style.ParagraphStyle;
82import android.text.style.URLSpan;
83import android.text.style.UpdateAppearance;
84import android.text.util.Linkify;
85import android.util.AttributeSet;
86import android.util.FloatMath;
87import android.util.Log;
88import android.util.TypedValue;
89import android.view.ActionMode;
90import android.view.ContextMenu;
91import android.view.Gravity;
92import android.view.HapticFeedbackConstants;
93import android.view.KeyEvent;
94import android.view.LayoutInflater;
95import android.view.Menu;
96import android.view.MenuItem;
97import android.view.MotionEvent;
98import android.view.View;
99import android.view.ViewDebug;
100import android.view.ViewGroup.LayoutParams;
101import android.view.ViewRoot;
102import android.view.ViewTreeObserver;
103import android.view.accessibility.AccessibilityEvent;
104import android.view.accessibility.AccessibilityManager;
105import android.view.animation.AnimationUtils;
106import android.view.inputmethod.BaseInputConnection;
107import android.view.inputmethod.CompletionInfo;
108import android.view.inputmethod.EditorInfo;
109import android.view.inputmethod.ExtractedText;
110import android.view.inputmethod.ExtractedTextRequest;
111import android.view.inputmethod.InputConnection;
112import android.view.inputmethod.InputMethodManager;
113import android.widget.RemoteViews.RemoteView;
114
115import java.io.IOException;
116import java.lang.ref.WeakReference;
117import java.util.ArrayList;
118
119/**
120 * Displays text to the user and optionally allows them to edit it.  A TextView
121 * is a complete text editor, however the basic class is configured to not
122 * allow editing; see {@link EditText} for a subclass that configures the text
123 * view for editing.
124 *
125 * <p>
126 * <b>XML attributes</b>
127 * <p>
128 * See {@link android.R.styleable#TextView TextView Attributes},
129 * {@link android.R.styleable#View View Attributes}
130 *
131 * @attr ref android.R.styleable#TextView_text
132 * @attr ref android.R.styleable#TextView_bufferType
133 * @attr ref android.R.styleable#TextView_hint
134 * @attr ref android.R.styleable#TextView_textColor
135 * @attr ref android.R.styleable#TextView_textColorHighlight
136 * @attr ref android.R.styleable#TextView_textColorHint
137 * @attr ref android.R.styleable#TextView_textAppearance
138 * @attr ref android.R.styleable#TextView_textColorLink
139 * @attr ref android.R.styleable#TextView_textSize
140 * @attr ref android.R.styleable#TextView_textScaleX
141 * @attr ref android.R.styleable#TextView_typeface
142 * @attr ref android.R.styleable#TextView_textStyle
143 * @attr ref android.R.styleable#TextView_cursorVisible
144 * @attr ref android.R.styleable#TextView_maxLines
145 * @attr ref android.R.styleable#TextView_maxHeight
146 * @attr ref android.R.styleable#TextView_lines
147 * @attr ref android.R.styleable#TextView_height
148 * @attr ref android.R.styleable#TextView_minLines
149 * @attr ref android.R.styleable#TextView_minHeight
150 * @attr ref android.R.styleable#TextView_maxEms
151 * @attr ref android.R.styleable#TextView_maxWidth
152 * @attr ref android.R.styleable#TextView_ems
153 * @attr ref android.R.styleable#TextView_width
154 * @attr ref android.R.styleable#TextView_minEms
155 * @attr ref android.R.styleable#TextView_minWidth
156 * @attr ref android.R.styleable#TextView_gravity
157 * @attr ref android.R.styleable#TextView_scrollHorizontally
158 * @attr ref android.R.styleable#TextView_password
159 * @attr ref android.R.styleable#TextView_singleLine
160 * @attr ref android.R.styleable#TextView_selectAllOnFocus
161 * @attr ref android.R.styleable#TextView_includeFontPadding
162 * @attr ref android.R.styleable#TextView_maxLength
163 * @attr ref android.R.styleable#TextView_shadowColor
164 * @attr ref android.R.styleable#TextView_shadowDx
165 * @attr ref android.R.styleable#TextView_shadowDy
166 * @attr ref android.R.styleable#TextView_shadowRadius
167 * @attr ref android.R.styleable#TextView_autoLink
168 * @attr ref android.R.styleable#TextView_linksClickable
169 * @attr ref android.R.styleable#TextView_numeric
170 * @attr ref android.R.styleable#TextView_digits
171 * @attr ref android.R.styleable#TextView_phoneNumber
172 * @attr ref android.R.styleable#TextView_inputMethod
173 * @attr ref android.R.styleable#TextView_capitalize
174 * @attr ref android.R.styleable#TextView_autoText
175 * @attr ref android.R.styleable#TextView_editable
176 * @attr ref android.R.styleable#TextView_freezesText
177 * @attr ref android.R.styleable#TextView_ellipsize
178 * @attr ref android.R.styleable#TextView_drawableTop
179 * @attr ref android.R.styleable#TextView_drawableBottom
180 * @attr ref android.R.styleable#TextView_drawableRight
181 * @attr ref android.R.styleable#TextView_drawableLeft
182 * @attr ref android.R.styleable#TextView_drawablePadding
183 * @attr ref android.R.styleable#TextView_lineSpacingExtra
184 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
185 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
186 * @attr ref android.R.styleable#TextView_inputType
187 * @attr ref android.R.styleable#TextView_imeOptions
188 * @attr ref android.R.styleable#TextView_privateImeOptions
189 * @attr ref android.R.styleable#TextView_imeActionLabel
190 * @attr ref android.R.styleable#TextView_imeActionId
191 * @attr ref android.R.styleable#TextView_editorExtras
192 */
193@RemoteView
194public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
195    static final String LOG_TAG = "TextView";
196    static final boolean DEBUG_EXTRACT = false;
197
198    private static final int PRIORITY = 100;
199
200    private int mCurrentAlpha = 255;
201
202    private final int[] mTempCoords = new int[2];
203
204    private ColorStateList mTextColor;
205    private int mCurTextColor;
206    private ColorStateList mHintTextColor;
207    private ColorStateList mLinkTextColor;
208    private int mCurHintTextColor;
209    private boolean mFreezesText;
210    private boolean mFrozenWithFocus;
211    private boolean mTemporaryDetach;
212    private boolean mDispatchTemporaryDetach;
213
214    private boolean mEatTouchRelease = false;
215    private boolean mScrolled = false;
216
217    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
218    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
219
220    private float mShadowRadius, mShadowDx, mShadowDy;
221
222    private static final int PREDRAW_NOT_REGISTERED = 0;
223    private static final int PREDRAW_PENDING = 1;
224    private static final int PREDRAW_DONE = 2;
225    private int mPreDrawState = PREDRAW_NOT_REGISTERED;
226
227    private TextUtils.TruncateAt mEllipsize = null;
228
229    // Enum for the "typeface" XML parameter.
230    // TODO: How can we get this from the XML instead of hardcoding it here?
231    private static final int SANS = 1;
232    private static final int SERIF = 2;
233    private static final int MONOSPACE = 3;
234
235    // Bitfield for the "numeric" XML parameter.
236    // TODO: How can we get this from the XML instead of hardcoding it here?
237    private static final int SIGNED = 2;
238    private static final int DECIMAL = 4;
239
240    class Drawables {
241        final Rect mCompoundRect = new Rect();
242        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight;
243        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight;
244        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight;
245        int mDrawablePadding;
246    }
247    private Drawables mDrawables;
248
249    private CharSequence mError;
250    private boolean mErrorWasChanged;
251    private ErrorPopup mPopup;
252    /**
253     * This flag is set if the TextView tries to display an error before it
254     * is attached to the window (so its position is still unknown).
255     * It causes the error to be shown later, when onAttachedToWindow()
256     * is called.
257     */
258    private boolean mShowErrorAfterAttach;
259
260    private CharWrapper mCharWrapper = null;
261
262    private boolean mSelectionMoved = false;
263    private boolean mTouchFocusSelected = false;
264
265    private Marquee mMarquee;
266    private boolean mRestartMarquee;
267
268    private int mMarqueeRepeatLimit = 3;
269
270    class InputContentType {
271        int imeOptions = EditorInfo.IME_NULL;
272        String privateImeOptions;
273        CharSequence imeActionLabel;
274        int imeActionId;
275        Bundle extras;
276        OnEditorActionListener onEditorActionListener;
277        boolean enterDown;
278    }
279    InputContentType mInputContentType;
280
281    class InputMethodState {
282        Rect mCursorRectInWindow = new Rect();
283        RectF mTmpRectF = new RectF();
284        float[] mTmpOffset = new float[2];
285        ExtractedTextRequest mExtracting;
286        final ExtractedText mTmpExtracted = new ExtractedText();
287        int mBatchEditNesting;
288        boolean mCursorChanged;
289        boolean mSelectionModeChanged;
290        boolean mContentChanged;
291        int mChangedStart, mChangedEnd, mChangedDelta;
292    }
293    InputMethodState mInputMethodState;
294
295    private int mTextSelectHandleLeftRes;
296    private int mTextSelectHandleRightRes;
297    private int mTextSelectHandleRes;
298
299    /*
300     * Kick-start the font cache for the zygote process (to pay the cost of
301     * initializing freetype for our default font only once).
302     */
303    static {
304        Paint p = new Paint();
305        p.setAntiAlias(true);
306        // We don't care about the result, just the side-effect of measuring.
307        p.measureText("H");
308    }
309
310    /**
311     * Interface definition for a callback to be invoked when an action is
312     * performed on the editor.
313     */
314    public interface OnEditorActionListener {
315        /**
316         * Called when an action is being performed.
317         *
318         * @param v The view that was clicked.
319         * @param actionId Identifier of the action.  This will be either the
320         * identifier you supplied, or {@link EditorInfo#IME_NULL
321         * EditorInfo.IME_NULL} if being called due to the enter key
322         * being pressed.
323         * @param event If triggered by an enter key, this is the event;
324         * otherwise, this is null.
325         * @return Return true if you have consumed the action, else false.
326         */
327        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
328    }
329
330    public TextView(Context context) {
331        this(context, null);
332    }
333
334    public TextView(Context context,
335                    AttributeSet attrs) {
336        this(context, attrs, com.android.internal.R.attr.textViewStyle);
337    }
338
339    @SuppressWarnings("deprecation")
340    public TextView(Context context,
341                    AttributeSet attrs,
342                    int defStyle) {
343        super(context, attrs, defStyle);
344        mText = "";
345
346        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
347        mTextPaint.density = getResources().getDisplayMetrics().density;
348        mTextPaint.setCompatibilityScaling(
349                getResources().getCompatibilityInfo().applicationScale);
350
351        // If we get the paint from the skin, we should set it to left, since
352        // the layout always wants it to be left.
353        // mTextPaint.setTextAlign(Paint.Align.LEFT);
354
355        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
356        mHighlightPaint.setCompatibilityScaling(
357                getResources().getCompatibilityInfo().applicationScale);
358
359        mMovement = getDefaultMovementMethod();
360        mTransformation = null;
361
362        TypedArray a =
363            context.obtainStyledAttributes(
364                attrs, com.android.internal.R.styleable.TextView, defStyle, 0);
365
366        int textColorHighlight = 0;
367        ColorStateList textColor = null;
368        ColorStateList textColorHint = null;
369        ColorStateList textColorLink = null;
370        int textSize = 15;
371        int typefaceIndex = -1;
372        int styleIndex = -1;
373
374        /*
375         * Look the appearance up without checking first if it exists because
376         * almost every TextView has one and it greatly simplifies the logic
377         * to be able to parse the appearance first and then let specific tags
378         * for this View override it.
379         */
380        TypedArray appearance = null;
381        int ap = a.getResourceId(com.android.internal.R.styleable.TextView_textAppearance, -1);
382        if (ap != -1) {
383            appearance = context.obtainStyledAttributes(ap,
384                                com.android.internal.R.styleable.
385                                TextAppearance);
386        }
387        if (appearance != null) {
388            int n = appearance.getIndexCount();
389            for (int i = 0; i < n; i++) {
390                int attr = appearance.getIndex(i);
391
392                switch (attr) {
393                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
394                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
395                    break;
396
397                case com.android.internal.R.styleable.TextAppearance_textColor:
398                    textColor = appearance.getColorStateList(attr);
399                    break;
400
401                case com.android.internal.R.styleable.TextAppearance_textColorHint:
402                    textColorHint = appearance.getColorStateList(attr);
403                    break;
404
405                case com.android.internal.R.styleable.TextAppearance_textColorLink:
406                    textColorLink = appearance.getColorStateList(attr);
407                    break;
408
409                case com.android.internal.R.styleable.TextAppearance_textSize:
410                    textSize = appearance.getDimensionPixelSize(attr, textSize);
411                    break;
412
413                case com.android.internal.R.styleable.TextAppearance_typeface:
414                    typefaceIndex = appearance.getInt(attr, -1);
415                    break;
416
417                case com.android.internal.R.styleable.TextAppearance_textStyle:
418                    styleIndex = appearance.getInt(attr, -1);
419                    break;
420                }
421            }
422
423            appearance.recycle();
424        }
425
426        boolean editable = getDefaultEditable();
427        CharSequence inputMethod = null;
428        int numeric = 0;
429        CharSequence digits = null;
430        boolean phone = false;
431        boolean autotext = false;
432        int autocap = -1;
433        int buffertype = 0;
434        boolean selectallonfocus = false;
435        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
436            drawableBottom = null;
437        int drawablePadding = 0;
438        int ellipsize = -1;
439        boolean singleLine = false;
440        int maxlength = -1;
441        CharSequence text = "";
442        CharSequence hint = null;
443        int shadowcolor = 0;
444        float dx = 0, dy = 0, r = 0;
445        boolean password = false;
446        int inputType = EditorInfo.TYPE_NULL;
447
448        int n = a.getIndexCount();
449        for (int i = 0; i < n; i++) {
450            int attr = a.getIndex(i);
451
452            switch (attr) {
453            case com.android.internal.R.styleable.TextView_editable:
454                editable = a.getBoolean(attr, editable);
455                break;
456
457            case com.android.internal.R.styleable.TextView_inputMethod:
458                inputMethod = a.getText(attr);
459                break;
460
461            case com.android.internal.R.styleable.TextView_numeric:
462                numeric = a.getInt(attr, numeric);
463                break;
464
465            case com.android.internal.R.styleable.TextView_digits:
466                digits = a.getText(attr);
467                break;
468
469            case com.android.internal.R.styleable.TextView_phoneNumber:
470                phone = a.getBoolean(attr, phone);
471                break;
472
473            case com.android.internal.R.styleable.TextView_autoText:
474                autotext = a.getBoolean(attr, autotext);
475                break;
476
477            case com.android.internal.R.styleable.TextView_capitalize:
478                autocap = a.getInt(attr, autocap);
479                break;
480
481            case com.android.internal.R.styleable.TextView_bufferType:
482                buffertype = a.getInt(attr, buffertype);
483                break;
484
485            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
486                selectallonfocus = a.getBoolean(attr, selectallonfocus);
487                break;
488
489            case com.android.internal.R.styleable.TextView_autoLink:
490                mAutoLinkMask = a.getInt(attr, 0);
491                break;
492
493            case com.android.internal.R.styleable.TextView_linksClickable:
494                mLinksClickable = a.getBoolean(attr, true);
495                break;
496
497            case com.android.internal.R.styleable.TextView_drawableLeft:
498                drawableLeft = a.getDrawable(attr);
499                break;
500
501            case com.android.internal.R.styleable.TextView_drawableTop:
502                drawableTop = a.getDrawable(attr);
503                break;
504
505            case com.android.internal.R.styleable.TextView_drawableRight:
506                drawableRight = a.getDrawable(attr);
507                break;
508
509            case com.android.internal.R.styleable.TextView_drawableBottom:
510                drawableBottom = a.getDrawable(attr);
511                break;
512
513            case com.android.internal.R.styleable.TextView_drawablePadding:
514                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
515                break;
516
517            case com.android.internal.R.styleable.TextView_maxLines:
518                setMaxLines(a.getInt(attr, -1));
519                break;
520
521            case com.android.internal.R.styleable.TextView_maxHeight:
522                setMaxHeight(a.getDimensionPixelSize(attr, -1));
523                break;
524
525            case com.android.internal.R.styleable.TextView_lines:
526                setLines(a.getInt(attr, -1));
527                break;
528
529            case com.android.internal.R.styleable.TextView_height:
530                setHeight(a.getDimensionPixelSize(attr, -1));
531                break;
532
533            case com.android.internal.R.styleable.TextView_minLines:
534                setMinLines(a.getInt(attr, -1));
535                break;
536
537            case com.android.internal.R.styleable.TextView_minHeight:
538                setMinHeight(a.getDimensionPixelSize(attr, -1));
539                break;
540
541            case com.android.internal.R.styleable.TextView_maxEms:
542                setMaxEms(a.getInt(attr, -1));
543                break;
544
545            case com.android.internal.R.styleable.TextView_maxWidth:
546                setMaxWidth(a.getDimensionPixelSize(attr, -1));
547                break;
548
549            case com.android.internal.R.styleable.TextView_ems:
550                setEms(a.getInt(attr, -1));
551                break;
552
553            case com.android.internal.R.styleable.TextView_width:
554                setWidth(a.getDimensionPixelSize(attr, -1));
555                break;
556
557            case com.android.internal.R.styleable.TextView_minEms:
558                setMinEms(a.getInt(attr, -1));
559                break;
560
561            case com.android.internal.R.styleable.TextView_minWidth:
562                setMinWidth(a.getDimensionPixelSize(attr, -1));
563                break;
564
565            case com.android.internal.R.styleable.TextView_gravity:
566                setGravity(a.getInt(attr, -1));
567                break;
568
569            case com.android.internal.R.styleable.TextView_hint:
570                hint = a.getText(attr);
571                break;
572
573            case com.android.internal.R.styleable.TextView_text:
574                text = a.getText(attr);
575                break;
576
577            case com.android.internal.R.styleable.TextView_scrollHorizontally:
578                if (a.getBoolean(attr, false)) {
579                    setHorizontallyScrolling(true);
580                }
581                break;
582
583            case com.android.internal.R.styleable.TextView_singleLine:
584                singleLine = a.getBoolean(attr, singleLine);
585                break;
586
587            case com.android.internal.R.styleable.TextView_ellipsize:
588                ellipsize = a.getInt(attr, ellipsize);
589                break;
590
591            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
592                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
593                break;
594
595            case com.android.internal.R.styleable.TextView_includeFontPadding:
596                if (!a.getBoolean(attr, true)) {
597                    setIncludeFontPadding(false);
598                }
599                break;
600
601            case com.android.internal.R.styleable.TextView_cursorVisible:
602                if (!a.getBoolean(attr, true)) {
603                    setCursorVisible(false);
604                }
605                break;
606
607            case com.android.internal.R.styleable.TextView_maxLength:
608                maxlength = a.getInt(attr, -1);
609                break;
610
611            case com.android.internal.R.styleable.TextView_textScaleX:
612                setTextScaleX(a.getFloat(attr, 1.0f));
613                break;
614
615            case com.android.internal.R.styleable.TextView_freezesText:
616                mFreezesText = a.getBoolean(attr, false);
617                break;
618
619            case com.android.internal.R.styleable.TextView_shadowColor:
620                shadowcolor = a.getInt(attr, 0);
621                break;
622
623            case com.android.internal.R.styleable.TextView_shadowDx:
624                dx = a.getFloat(attr, 0);
625                break;
626
627            case com.android.internal.R.styleable.TextView_shadowDy:
628                dy = a.getFloat(attr, 0);
629                break;
630
631            case com.android.internal.R.styleable.TextView_shadowRadius:
632                r = a.getFloat(attr, 0);
633                break;
634
635            case com.android.internal.R.styleable.TextView_enabled:
636                setEnabled(a.getBoolean(attr, isEnabled()));
637                break;
638
639            case com.android.internal.R.styleable.TextView_textColorHighlight:
640                textColorHighlight = a.getColor(attr, textColorHighlight);
641                break;
642
643            case com.android.internal.R.styleable.TextView_textColor:
644                textColor = a.getColorStateList(attr);
645                break;
646
647            case com.android.internal.R.styleable.TextView_textColorHint:
648                textColorHint = a.getColorStateList(attr);
649                break;
650
651            case com.android.internal.R.styleable.TextView_textColorLink:
652                textColorLink = a.getColorStateList(attr);
653                break;
654
655            case com.android.internal.R.styleable.TextView_textSize:
656                textSize = a.getDimensionPixelSize(attr, textSize);
657                break;
658
659            case com.android.internal.R.styleable.TextView_typeface:
660                typefaceIndex = a.getInt(attr, typefaceIndex);
661                break;
662
663            case com.android.internal.R.styleable.TextView_textStyle:
664                styleIndex = a.getInt(attr, styleIndex);
665                break;
666
667            case com.android.internal.R.styleable.TextView_password:
668                password = a.getBoolean(attr, password);
669                break;
670
671            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
672                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
673                break;
674
675            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
676                mSpacingMult = a.getFloat(attr, mSpacingMult);
677                break;
678
679            case com.android.internal.R.styleable.TextView_inputType:
680                inputType = a.getInt(attr, mInputType);
681                break;
682
683            case com.android.internal.R.styleable.TextView_imeOptions:
684                if (mInputContentType == null) {
685                    mInputContentType = new InputContentType();
686                }
687                mInputContentType.imeOptions = a.getInt(attr,
688                        mInputContentType.imeOptions);
689                break;
690
691            case com.android.internal.R.styleable.TextView_imeActionLabel:
692                if (mInputContentType == null) {
693                    mInputContentType = new InputContentType();
694                }
695                mInputContentType.imeActionLabel = a.getText(attr);
696                break;
697
698            case com.android.internal.R.styleable.TextView_imeActionId:
699                if (mInputContentType == null) {
700                    mInputContentType = new InputContentType();
701                }
702                mInputContentType.imeActionId = a.getInt(attr,
703                        mInputContentType.imeActionId);
704                break;
705
706            case com.android.internal.R.styleable.TextView_privateImeOptions:
707                setPrivateImeOptions(a.getString(attr));
708                break;
709
710            case com.android.internal.R.styleable.TextView_editorExtras:
711                try {
712                    setInputExtras(a.getResourceId(attr, 0));
713                } catch (XmlPullParserException e) {
714                    Log.w(LOG_TAG, "Failure reading input extras", e);
715                } catch (IOException e) {
716                    Log.w(LOG_TAG, "Failure reading input extras", e);
717                }
718                break;
719
720            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
721                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
722                break;
723
724            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
725                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
726                break;
727
728            case com.android.internal.R.styleable.TextView_textSelectHandle:
729                mTextSelectHandleRes = a.getResourceId(attr, 0);
730                break;
731            }
732        }
733        a.recycle();
734
735        BufferType bufferType = BufferType.EDITABLE;
736
737        if ((inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
738                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
739            password = true;
740        }
741
742        if (inputMethod != null) {
743            Class<?> c;
744
745            try {
746                c = Class.forName(inputMethod.toString());
747            } catch (ClassNotFoundException ex) {
748                throw new RuntimeException(ex);
749            }
750
751            try {
752                mInput = (KeyListener) c.newInstance();
753            } catch (InstantiationException ex) {
754                throw new RuntimeException(ex);
755            } catch (IllegalAccessException ex) {
756                throw new RuntimeException(ex);
757            }
758            try {
759                mInputType = inputType != EditorInfo.TYPE_NULL
760                        ? inputType
761                        : mInput.getInputType();
762            } catch (IncompatibleClassChangeError e) {
763                mInputType = EditorInfo.TYPE_CLASS_TEXT;
764            }
765        } else if (digits != null) {
766            mInput = DigitsKeyListener.getInstance(digits.toString());
767            // If no input type was specified, we will default to generic
768            // text, since we can't tell the IME about the set of digits
769            // that was selected.
770            mInputType = inputType != EditorInfo.TYPE_NULL
771                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
772        } else if (inputType != EditorInfo.TYPE_NULL) {
773            setInputType(inputType, true);
774            singleLine = (inputType&(EditorInfo.TYPE_MASK_CLASS
775                            | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) !=
776                    (EditorInfo.TYPE_CLASS_TEXT
777                            | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
778        } else if (phone) {
779            mInput = DialerKeyListener.getInstance();
780            mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
781        } else if (numeric != 0) {
782            mInput = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
783                                                   (numeric & DECIMAL) != 0);
784            inputType = EditorInfo.TYPE_CLASS_NUMBER;
785            if ((numeric & SIGNED) != 0) {
786                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
787            }
788            if ((numeric & DECIMAL) != 0) {
789                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
790            }
791            mInputType = inputType;
792        } else if (autotext || autocap != -1) {
793            TextKeyListener.Capitalize cap;
794
795            inputType = EditorInfo.TYPE_CLASS_TEXT;
796            if (!singleLine) {
797                inputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
798            }
799
800            switch (autocap) {
801            case 1:
802                cap = TextKeyListener.Capitalize.SENTENCES;
803                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
804                break;
805
806            case 2:
807                cap = TextKeyListener.Capitalize.WORDS;
808                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
809                break;
810
811            case 3:
812                cap = TextKeyListener.Capitalize.CHARACTERS;
813                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
814                break;
815
816            default:
817                cap = TextKeyListener.Capitalize.NONE;
818                break;
819            }
820
821            mInput = TextKeyListener.getInstance(autotext, cap);
822            mInputType = inputType;
823        } else if (editable) {
824            mInput = TextKeyListener.getInstance();
825            mInputType = EditorInfo.TYPE_CLASS_TEXT;
826            if (!singleLine) {
827                mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
828            }
829        } else {
830            mInput = null;
831
832            switch (buffertype) {
833                case 0:
834                    bufferType = BufferType.NORMAL;
835                    break;
836                case 1:
837                    bufferType = BufferType.SPANNABLE;
838                    break;
839                case 2:
840                    bufferType = BufferType.EDITABLE;
841                    break;
842            }
843        }
844
845        if (password && (mInputType&EditorInfo.TYPE_MASK_CLASS)
846                == EditorInfo.TYPE_CLASS_TEXT) {
847            mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
848                | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD;
849        }
850
851        if (selectallonfocus) {
852            mSelectAllOnFocus = true;
853
854            if (bufferType == BufferType.NORMAL)
855                bufferType = BufferType.SPANNABLE;
856        }
857
858        setCompoundDrawablesWithIntrinsicBounds(
859            drawableLeft, drawableTop, drawableRight, drawableBottom);
860        setCompoundDrawablePadding(drawablePadding);
861
862        if (singleLine) {
863            setSingleLine();
864
865            if (mInput == null && ellipsize < 0) {
866                ellipsize = 3; // END
867            }
868        }
869
870        switch (ellipsize) {
871            case 1:
872                setEllipsize(TextUtils.TruncateAt.START);
873                break;
874            case 2:
875                setEllipsize(TextUtils.TruncateAt.MIDDLE);
876                break;
877            case 3:
878                setEllipsize(TextUtils.TruncateAt.END);
879                break;
880            case 4:
881                setHorizontalFadingEdgeEnabled(true);
882                setEllipsize(TextUtils.TruncateAt.MARQUEE);
883                break;
884        }
885
886        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
887        setHintTextColor(textColorHint);
888        setLinkTextColor(textColorLink);
889        if (textColorHighlight != 0) {
890            setHighlightColor(textColorHighlight);
891        }
892        setRawTextSize(textSize);
893
894        if (password) {
895            setTransformationMethod(PasswordTransformationMethod.getInstance());
896            typefaceIndex = MONOSPACE;
897        } else if ((mInputType&(EditorInfo.TYPE_MASK_CLASS
898                |EditorInfo.TYPE_MASK_VARIATION))
899                == (EditorInfo.TYPE_CLASS_TEXT
900                        |EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
901            typefaceIndex = MONOSPACE;
902        }
903
904        setTypefaceByIndex(typefaceIndex, styleIndex);
905
906        if (shadowcolor != 0) {
907            setShadowLayer(r, dx, dy, shadowcolor);
908        }
909
910        if (maxlength >= 0) {
911            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
912        } else {
913            setFilters(NO_FILTERS);
914        }
915
916        setText(text, bufferType);
917        if (hint != null) setHint(hint);
918
919        /*
920         * Views are not normally focusable unless specified to be.
921         * However, TextViews that have input or movement methods *are*
922         * focusable by default.
923         */
924        a = context.obtainStyledAttributes(attrs,
925                                           com.android.internal.R.styleable.View,
926                                           defStyle, 0);
927
928        boolean focusable = mMovement != null || mInput != null;
929        boolean clickable = focusable;
930        boolean longClickable = focusable;
931
932        n = a.getIndexCount();
933        for (int i = 0; i < n; i++) {
934            int attr = a.getIndex(i);
935
936            switch (attr) {
937            case com.android.internal.R.styleable.View_focusable:
938                focusable = a.getBoolean(attr, focusable);
939                break;
940
941            case com.android.internal.R.styleable.View_clickable:
942                clickable = a.getBoolean(attr, clickable);
943                break;
944
945            case com.android.internal.R.styleable.View_longClickable:
946                longClickable = a.getBoolean(attr, longClickable);
947                break;
948            }
949        }
950        a.recycle();
951
952        setFocusable(focusable);
953        setClickable(clickable);
954        setLongClickable(longClickable);
955
956        prepareCursorControllers();
957    }
958
959    private void setTypefaceByIndex(int typefaceIndex, int styleIndex) {
960        Typeface tf = null;
961        switch (typefaceIndex) {
962            case SANS:
963                tf = Typeface.SANS_SERIF;
964                break;
965
966            case SERIF:
967                tf = Typeface.SERIF;
968                break;
969
970            case MONOSPACE:
971                tf = Typeface.MONOSPACE;
972                break;
973        }
974
975        setTypeface(tf, styleIndex);
976    }
977
978    /**
979     * Sets the typeface and style in which the text should be displayed,
980     * and turns on the fake bold and italic bits in the Paint if the
981     * Typeface that you provided does not have all the bits in the
982     * style that you specified.
983     *
984     * @attr ref android.R.styleable#TextView_typeface
985     * @attr ref android.R.styleable#TextView_textStyle
986     */
987    public void setTypeface(Typeface tf, int style) {
988        if (style > 0) {
989            if (tf == null) {
990                tf = Typeface.defaultFromStyle(style);
991            } else {
992                tf = Typeface.create(tf, style);
993            }
994
995            setTypeface(tf);
996            // now compute what (if any) algorithmic styling is needed
997            int typefaceStyle = tf != null ? tf.getStyle() : 0;
998            int need = style & ~typefaceStyle;
999            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1000            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1001        } else {
1002            mTextPaint.setFakeBoldText(false);
1003            mTextPaint.setTextSkewX(0);
1004            setTypeface(tf);
1005        }
1006    }
1007
1008    /**
1009     * Subclasses override this to specify that they have a KeyListener
1010     * by default even if not specifically called for in the XML options.
1011     */
1012    protected boolean getDefaultEditable() {
1013        return false;
1014    }
1015
1016    /**
1017     * Subclasses override this to specify a default movement method.
1018     */
1019    protected MovementMethod getDefaultMovementMethod() {
1020        return null;
1021    }
1022
1023    /**
1024     * Return the text the TextView is displaying. If setText() was called with
1025     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1026     * the return value from this method to Spannable or Editable, respectively.
1027     *
1028     * Note: The content of the return value should not be modified. If you want
1029     * a modifiable one, you should make your own copy first.
1030     */
1031    @ViewDebug.CapturedViewProperty
1032    public CharSequence getText() {
1033        return mText;
1034    }
1035
1036    /**
1037     * Returns the length, in characters, of the text managed by this TextView
1038     */
1039    public int length() {
1040        return mText.length();
1041    }
1042
1043    /**
1044     * Return the text the TextView is displaying as an Editable object.  If
1045     * the text is not editable, null is returned.
1046     *
1047     * @see #getText
1048     */
1049    public Editable getEditableText() {
1050        return (mText instanceof Editable) ? (Editable)mText : null;
1051    }
1052
1053    /**
1054     * @return the height of one standard line in pixels.  Note that markup
1055     * within the text can cause individual lines to be taller or shorter
1056     * than this height, and the layout may contain additional first-
1057     * or last-line padding.
1058     */
1059    public int getLineHeight() {
1060        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult
1061                          + mSpacingAdd);
1062    }
1063
1064    /**
1065     * @return the Layout that is currently being used to display the text.
1066     * This can be null if the text or width has recently changes.
1067     */
1068    public final Layout getLayout() {
1069        return mLayout;
1070    }
1071
1072    /**
1073     * @return the current key listener for this TextView.
1074     * This will frequently be null for non-EditText TextViews.
1075     */
1076    public final KeyListener getKeyListener() {
1077        return mInput;
1078    }
1079
1080    /**
1081     * Sets the key listener to be used with this TextView.  This can be null
1082     * to disallow user input.  Note that this method has significant and
1083     * subtle interactions with soft keyboards and other input method:
1084     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1085     * for important details.  Calling this method will replace the current
1086     * content type of the text view with the content type returned by the
1087     * key listener.
1088     * <p>
1089     * Be warned that if you want a TextView with a key listener or movement
1090     * method not to be focusable, or if you want a TextView without a
1091     * key listener or movement method to be focusable, you must call
1092     * {@link #setFocusable} again after calling this to get the focusability
1093     * back the way you want it.
1094     *
1095     * @attr ref android.R.styleable#TextView_numeric
1096     * @attr ref android.R.styleable#TextView_digits
1097     * @attr ref android.R.styleable#TextView_phoneNumber
1098     * @attr ref android.R.styleable#TextView_inputMethod
1099     * @attr ref android.R.styleable#TextView_capitalize
1100     * @attr ref android.R.styleable#TextView_autoText
1101     */
1102    public void setKeyListener(KeyListener input) {
1103        setKeyListenerOnly(input);
1104        fixFocusableAndClickableSettings();
1105
1106        if (input != null) {
1107            try {
1108                mInputType = mInput.getInputType();
1109            } catch (IncompatibleClassChangeError e) {
1110                mInputType = EditorInfo.TYPE_CLASS_TEXT;
1111            }
1112            if ((mInputType&EditorInfo.TYPE_MASK_CLASS)
1113                    == EditorInfo.TYPE_CLASS_TEXT) {
1114                if (mSingleLine) {
1115                    mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
1116                } else {
1117                    mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
1118                }
1119            }
1120        } else {
1121            mInputType = EditorInfo.TYPE_NULL;
1122        }
1123
1124        InputMethodManager imm = InputMethodManager.peekInstance();
1125        if (imm != null) imm.restartInput(this);
1126    }
1127
1128    private void setKeyListenerOnly(KeyListener input) {
1129        mInput = input;
1130        if (mInput != null && !(mText instanceof Editable))
1131            setText(mText);
1132
1133        setFilters((Editable) mText, mFilters);
1134    }
1135
1136    /**
1137     * @return the movement method being used for this TextView.
1138     * This will frequently be null for non-EditText TextViews.
1139     */
1140    public final MovementMethod getMovementMethod() {
1141        return mMovement;
1142    }
1143
1144    /**
1145     * Sets the movement method (arrow key handler) to be used for
1146     * this TextView.  This can be null to disallow using the arrow keys
1147     * to move the cursor or scroll the view.
1148     * <p>
1149     * Be warned that if you want a TextView with a key listener or movement
1150     * method not to be focusable, or if you want a TextView without a
1151     * key listener or movement method to be focusable, you must call
1152     * {@link #setFocusable} again after calling this to get the focusability
1153     * back the way you want it.
1154     */
1155    public final void setMovementMethod(MovementMethod movement) {
1156        mMovement = movement;
1157
1158        if (mMovement != null && !(mText instanceof Spannable))
1159            setText(mText);
1160
1161        fixFocusableAndClickableSettings();
1162
1163        // SelectionModifierCursorController depends on canSelectText, which depends on mMovement
1164        prepareCursorControllers();
1165    }
1166
1167    private void fixFocusableAndClickableSettings() {
1168        if ((mMovement != null) || mInput != null) {
1169            setFocusable(true);
1170            setClickable(true);
1171            setLongClickable(true);
1172        } else {
1173            setFocusable(false);
1174            setClickable(false);
1175            setLongClickable(false);
1176        }
1177    }
1178
1179    /**
1180     * @return the current transformation method for this TextView.
1181     * This will frequently be null except for single-line and password
1182     * fields.
1183     */
1184    public final TransformationMethod getTransformationMethod() {
1185        return mTransformation;
1186    }
1187
1188    /**
1189     * Sets the transformation that is applied to the text that this
1190     * TextView is displaying.
1191     *
1192     * @attr ref android.R.styleable#TextView_password
1193     * @attr ref android.R.styleable#TextView_singleLine
1194     */
1195    public final void setTransformationMethod(TransformationMethod method) {
1196        if (method == mTransformation) {
1197            // Avoid the setText() below if the transformation is
1198            // the same.
1199            return;
1200        }
1201        if (mTransformation != null) {
1202            if (mText instanceof Spannable) {
1203                ((Spannable) mText).removeSpan(mTransformation);
1204            }
1205        }
1206
1207        mTransformation = method;
1208
1209        setText(mText);
1210    }
1211
1212    /**
1213     * Returns the top padding of the view, plus space for the top
1214     * Drawable if any.
1215     */
1216    public int getCompoundPaddingTop() {
1217        final Drawables dr = mDrawables;
1218        if (dr == null || dr.mDrawableTop == null) {
1219            return mPaddingTop;
1220        } else {
1221            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1222        }
1223    }
1224
1225    /**
1226     * Returns the bottom padding of the view, plus space for the bottom
1227     * Drawable if any.
1228     */
1229    public int getCompoundPaddingBottom() {
1230        final Drawables dr = mDrawables;
1231        if (dr == null || dr.mDrawableBottom == null) {
1232            return mPaddingBottom;
1233        } else {
1234            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1235        }
1236    }
1237
1238    /**
1239     * Returns the left padding of the view, plus space for the left
1240     * Drawable if any.
1241     */
1242    public int getCompoundPaddingLeft() {
1243        final Drawables dr = mDrawables;
1244        if (dr == null || dr.mDrawableLeft == null) {
1245            return mPaddingLeft;
1246        } else {
1247            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1248        }
1249    }
1250
1251    /**
1252     * Returns the right padding of the view, plus space for the right
1253     * Drawable if any.
1254     */
1255    public int getCompoundPaddingRight() {
1256        final Drawables dr = mDrawables;
1257        if (dr == null || dr.mDrawableRight == null) {
1258            return mPaddingRight;
1259        } else {
1260            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1261        }
1262    }
1263
1264    /**
1265     * Returns the extended top padding of the view, including both the
1266     * top Drawable if any and any extra space to keep more than maxLines
1267     * of text from showing.  It is only valid to call this after measuring.
1268     */
1269    public int getExtendedPaddingTop() {
1270        if (mMaxMode != LINES) {
1271            return getCompoundPaddingTop();
1272        }
1273
1274        if (mLayout.getLineCount() <= mMaximum) {
1275            return getCompoundPaddingTop();
1276        }
1277
1278        int top = getCompoundPaddingTop();
1279        int bottom = getCompoundPaddingBottom();
1280        int viewht = getHeight() - top - bottom;
1281        int layoutht = mLayout.getLineTop(mMaximum);
1282
1283        if (layoutht >= viewht) {
1284            return top;
1285        }
1286
1287        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1288        if (gravity == Gravity.TOP) {
1289            return top;
1290        } else if (gravity == Gravity.BOTTOM) {
1291            return top + viewht - layoutht;
1292        } else { // (gravity == Gravity.CENTER_VERTICAL)
1293            return top + (viewht - layoutht) / 2;
1294        }
1295    }
1296
1297    /**
1298     * Returns the extended bottom padding of the view, including both the
1299     * bottom Drawable if any and any extra space to keep more than maxLines
1300     * of text from showing.  It is only valid to call this after measuring.
1301     */
1302    public int getExtendedPaddingBottom() {
1303        if (mMaxMode != LINES) {
1304            return getCompoundPaddingBottom();
1305        }
1306
1307        if (mLayout.getLineCount() <= mMaximum) {
1308            return getCompoundPaddingBottom();
1309        }
1310
1311        int top = getCompoundPaddingTop();
1312        int bottom = getCompoundPaddingBottom();
1313        int viewht = getHeight() - top - bottom;
1314        int layoutht = mLayout.getLineTop(mMaximum);
1315
1316        if (layoutht >= viewht) {
1317            return bottom;
1318        }
1319
1320        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1321        if (gravity == Gravity.TOP) {
1322            return bottom + viewht - layoutht;
1323        } else if (gravity == Gravity.BOTTOM) {
1324            return bottom;
1325        } else { // (gravity == Gravity.CENTER_VERTICAL)
1326            return bottom + (viewht - layoutht) / 2;
1327        }
1328    }
1329
1330    /**
1331     * Returns the total left padding of the view, including the left
1332     * Drawable if any.
1333     */
1334    public int getTotalPaddingLeft() {
1335        return getCompoundPaddingLeft();
1336    }
1337
1338    /**
1339     * Returns the total right padding of the view, including the right
1340     * Drawable if any.
1341     */
1342    public int getTotalPaddingRight() {
1343        return getCompoundPaddingRight();
1344    }
1345
1346    /**
1347     * Returns the total top padding of the view, including the top
1348     * Drawable if any, the extra space to keep more than maxLines
1349     * from showing, and the vertical offset for gravity, if any.
1350     */
1351    public int getTotalPaddingTop() {
1352        return getExtendedPaddingTop() + getVerticalOffset(true);
1353    }
1354
1355    /**
1356     * Returns the total bottom padding of the view, including the bottom
1357     * Drawable if any, the extra space to keep more than maxLines
1358     * from showing, and the vertical offset for gravity, if any.
1359     */
1360    public int getTotalPaddingBottom() {
1361        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1362    }
1363
1364    /**
1365     * Sets the Drawables (if any) to appear to the left of, above,
1366     * to the right of, and below the text.  Use null if you do not
1367     * want a Drawable there.  The Drawables must already have had
1368     * {@link Drawable#setBounds} called.
1369     *
1370     * @attr ref android.R.styleable#TextView_drawableLeft
1371     * @attr ref android.R.styleable#TextView_drawableTop
1372     * @attr ref android.R.styleable#TextView_drawableRight
1373     * @attr ref android.R.styleable#TextView_drawableBottom
1374     */
1375    public void setCompoundDrawables(Drawable left, Drawable top,
1376                                     Drawable right, Drawable bottom) {
1377        Drawables dr = mDrawables;
1378
1379        final boolean drawables = left != null || top != null
1380                || right != null || bottom != null;
1381
1382        if (!drawables) {
1383            // Clearing drawables...  can we free the data structure?
1384            if (dr != null) {
1385                if (dr.mDrawablePadding == 0) {
1386                    mDrawables = null;
1387                } else {
1388                    // We need to retain the last set padding, so just clear
1389                    // out all of the fields in the existing structure.
1390                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
1391                    dr.mDrawableLeft = null;
1392                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1393                    dr.mDrawableTop = null;
1394                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
1395                    dr.mDrawableRight = null;
1396                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1397                    dr.mDrawableBottom = null;
1398                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1399                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1400                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1401                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1402                }
1403            }
1404        } else {
1405            if (dr == null) {
1406                mDrawables = dr = new Drawables();
1407            }
1408
1409            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
1410                dr.mDrawableLeft.setCallback(null);
1411            }
1412            dr.mDrawableLeft = left;
1413
1414            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1415                dr.mDrawableTop.setCallback(null);
1416            }
1417            dr.mDrawableTop = top;
1418
1419            if (dr.mDrawableRight != right && dr.mDrawableRight != null) {
1420                dr.mDrawableRight.setCallback(null);
1421            }
1422            dr.mDrawableRight = right;
1423
1424            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1425                dr.mDrawableBottom.setCallback(null);
1426            }
1427            dr.mDrawableBottom = bottom;
1428
1429            final Rect compoundRect = dr.mCompoundRect;
1430            int[] state;
1431
1432            state = getDrawableState();
1433
1434            if (left != null) {
1435                left.setState(state);
1436                left.copyBounds(compoundRect);
1437                left.setCallback(this);
1438                dr.mDrawableSizeLeft = compoundRect.width();
1439                dr.mDrawableHeightLeft = compoundRect.height();
1440            } else {
1441                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1442            }
1443
1444            if (right != null) {
1445                right.setState(state);
1446                right.copyBounds(compoundRect);
1447                right.setCallback(this);
1448                dr.mDrawableSizeRight = compoundRect.width();
1449                dr.mDrawableHeightRight = compoundRect.height();
1450            } else {
1451                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1452            }
1453
1454            if (top != null) {
1455                top.setState(state);
1456                top.copyBounds(compoundRect);
1457                top.setCallback(this);
1458                dr.mDrawableSizeTop = compoundRect.height();
1459                dr.mDrawableWidthTop = compoundRect.width();
1460            } else {
1461                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1462            }
1463
1464            if (bottom != null) {
1465                bottom.setState(state);
1466                bottom.copyBounds(compoundRect);
1467                bottom.setCallback(this);
1468                dr.mDrawableSizeBottom = compoundRect.height();
1469                dr.mDrawableWidthBottom = compoundRect.width();
1470            } else {
1471                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1472            }
1473        }
1474
1475        invalidate();
1476        requestLayout();
1477    }
1478
1479    /**
1480     * Sets the Drawables (if any) to appear to the left of, above,
1481     * to the right of, and below the text.  Use 0 if you do not
1482     * want a Drawable there. The Drawables' bounds will be set to
1483     * their intrinsic bounds.
1484     *
1485     * @param left Resource identifier of the left Drawable.
1486     * @param top Resource identifier of the top Drawable.
1487     * @param right Resource identifier of the right Drawable.
1488     * @param bottom Resource identifier of the bottom Drawable.
1489     *
1490     * @attr ref android.R.styleable#TextView_drawableLeft
1491     * @attr ref android.R.styleable#TextView_drawableTop
1492     * @attr ref android.R.styleable#TextView_drawableRight
1493     * @attr ref android.R.styleable#TextView_drawableBottom
1494     */
1495    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1496        final Resources resources = getContext().getResources();
1497        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null,
1498                top != 0 ? resources.getDrawable(top) : null,
1499                right != 0 ? resources.getDrawable(right) : null,
1500                bottom != 0 ? resources.getDrawable(bottom) : null);
1501    }
1502
1503    /**
1504     * Sets the Drawables (if any) to appear to the left of, above,
1505     * to the right of, and below the text.  Use null if you do not
1506     * want a Drawable there. The Drawables' bounds will be set to
1507     * their intrinsic bounds.
1508     *
1509     * @attr ref android.R.styleable#TextView_drawableLeft
1510     * @attr ref android.R.styleable#TextView_drawableTop
1511     * @attr ref android.R.styleable#TextView_drawableRight
1512     * @attr ref android.R.styleable#TextView_drawableBottom
1513     */
1514    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1515            Drawable right, Drawable bottom) {
1516
1517        if (left != null) {
1518            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1519        }
1520        if (right != null) {
1521            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1522        }
1523        if (top != null) {
1524            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1525        }
1526        if (bottom != null) {
1527            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
1528        }
1529        setCompoundDrawables(left, top, right, bottom);
1530    }
1531
1532    /**
1533     * Returns drawables for the left, top, right, and bottom borders.
1534     */
1535    public Drawable[] getCompoundDrawables() {
1536        final Drawables dr = mDrawables;
1537        if (dr != null) {
1538            return new Drawable[] {
1539                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
1540            };
1541        } else {
1542            return new Drawable[] { null, null, null, null };
1543        }
1544    }
1545
1546    /**
1547     * Sets the size of the padding between the compound drawables and
1548     * the text.
1549     *
1550     * @attr ref android.R.styleable#TextView_drawablePadding
1551     */
1552    public void setCompoundDrawablePadding(int pad) {
1553        Drawables dr = mDrawables;
1554        if (pad == 0) {
1555            if (dr != null) {
1556                dr.mDrawablePadding = pad;
1557            }
1558        } else {
1559            if (dr == null) {
1560                mDrawables = dr = new Drawables();
1561            }
1562            dr.mDrawablePadding = pad;
1563        }
1564
1565        invalidate();
1566        requestLayout();
1567    }
1568
1569    /**
1570     * Returns the padding between the compound drawables and the text.
1571     */
1572    public int getCompoundDrawablePadding() {
1573        final Drawables dr = mDrawables;
1574        return dr != null ? dr.mDrawablePadding : 0;
1575    }
1576
1577    @Override
1578    public void setPadding(int left, int top, int right, int bottom) {
1579        if (left != mPaddingLeft ||
1580            right != mPaddingRight ||
1581            top != mPaddingTop ||
1582            bottom != mPaddingBottom) {
1583            nullLayouts();
1584        }
1585
1586        // the super call will requestLayout()
1587        super.setPadding(left, top, right, bottom);
1588        invalidate();
1589    }
1590
1591    /**
1592     * Gets the autolink mask of the text.  See {@link
1593     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1594     * possible values.
1595     *
1596     * @attr ref android.R.styleable#TextView_autoLink
1597     */
1598    public final int getAutoLinkMask() {
1599        return mAutoLinkMask;
1600    }
1601
1602    /**
1603     * Sets the text color, size, style, hint color, and highlight color
1604     * from the specified TextAppearance resource.
1605     */
1606    public void setTextAppearance(Context context, int resid) {
1607        TypedArray appearance =
1608            context.obtainStyledAttributes(resid,
1609                                           com.android.internal.R.styleable.TextAppearance);
1610
1611        int color;
1612        ColorStateList colors;
1613        int ts;
1614
1615        color = appearance.getColor(com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
1616        if (color != 0) {
1617            setHighlightColor(color);
1618        }
1619
1620        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1621                                              TextAppearance_textColor);
1622        if (colors != null) {
1623            setTextColor(colors);
1624        }
1625
1626        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
1627                                              TextAppearance_textSize, 0);
1628        if (ts != 0) {
1629            setRawTextSize(ts);
1630        }
1631
1632        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1633                                              TextAppearance_textColorHint);
1634        if (colors != null) {
1635            setHintTextColor(colors);
1636        }
1637
1638        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1639                                              TextAppearance_textColorLink);
1640        if (colors != null) {
1641            setLinkTextColor(colors);
1642        }
1643
1644        int typefaceIndex, styleIndex;
1645
1646        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
1647                                          TextAppearance_typeface, -1);
1648        styleIndex = appearance.getInt(com.android.internal.R.styleable.
1649                                       TextAppearance_textStyle, -1);
1650
1651        setTypefaceByIndex(typefaceIndex, styleIndex);
1652        appearance.recycle();
1653    }
1654
1655    /**
1656     * @return the size (in pixels) of the default text size in this TextView.
1657     */
1658    public float getTextSize() {
1659        return mTextPaint.getTextSize();
1660    }
1661
1662    /**
1663     * Set the default text size to the given value, interpreted as "scaled
1664     * pixel" units.  This size is adjusted based on the current density and
1665     * user font size preference.
1666     *
1667     * @param size The scaled pixel size.
1668     *
1669     * @attr ref android.R.styleable#TextView_textSize
1670     */
1671    @android.view.RemotableViewMethod
1672    public void setTextSize(float size) {
1673        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
1674    }
1675
1676    /**
1677     * Set the default text size to a given unit and value.  See {@link
1678     * TypedValue} for the possible dimension units.
1679     *
1680     * @param unit The desired dimension unit.
1681     * @param size The desired size in the given units.
1682     *
1683     * @attr ref android.R.styleable#TextView_textSize
1684     */
1685    public void setTextSize(int unit, float size) {
1686        Context c = getContext();
1687        Resources r;
1688
1689        if (c == null)
1690            r = Resources.getSystem();
1691        else
1692            r = c.getResources();
1693
1694        setRawTextSize(TypedValue.applyDimension(
1695            unit, size, r.getDisplayMetrics()));
1696    }
1697
1698    private void setRawTextSize(float size) {
1699        if (size != mTextPaint.getTextSize()) {
1700            mTextPaint.setTextSize(size);
1701
1702            if (mLayout != null) {
1703                nullLayouts();
1704                requestLayout();
1705                invalidate();
1706            }
1707        }
1708    }
1709
1710    /**
1711     * @return the extent by which text is currently being stretched
1712     * horizontally.  This will usually be 1.
1713     */
1714    public float getTextScaleX() {
1715        return mTextPaint.getTextScaleX();
1716    }
1717
1718    /**
1719     * Sets the extent by which text should be stretched horizontally.
1720     *
1721     * @attr ref android.R.styleable#TextView_textScaleX
1722     */
1723    @android.view.RemotableViewMethod
1724    public void setTextScaleX(float size) {
1725        if (size != mTextPaint.getTextScaleX()) {
1726            mUserSetTextScaleX = true;
1727            mTextPaint.setTextScaleX(size);
1728
1729            if (mLayout != null) {
1730                nullLayouts();
1731                requestLayout();
1732                invalidate();
1733            }
1734        }
1735    }
1736
1737    /**
1738     * Sets the typeface and style in which the text should be displayed.
1739     * Note that not all Typeface families actually have bold and italic
1740     * variants, so you may need to use
1741     * {@link #setTypeface(Typeface, int)} to get the appearance
1742     * that you actually want.
1743     *
1744     * @attr ref android.R.styleable#TextView_typeface
1745     * @attr ref android.R.styleable#TextView_textStyle
1746     */
1747    public void setTypeface(Typeface tf) {
1748        if (mTextPaint.getTypeface() != tf) {
1749            mTextPaint.setTypeface(tf);
1750
1751            if (mLayout != null) {
1752                nullLayouts();
1753                requestLayout();
1754                invalidate();
1755            }
1756        }
1757    }
1758
1759    /**
1760     * @return the current typeface and style in which the text is being
1761     * displayed.
1762     */
1763    public Typeface getTypeface() {
1764        return mTextPaint.getTypeface();
1765    }
1766
1767    /**
1768     * Sets the text color for all the states (normal, selected,
1769     * focused) to be this color.
1770     *
1771     * @attr ref android.R.styleable#TextView_textColor
1772     */
1773    @android.view.RemotableViewMethod
1774    public void setTextColor(int color) {
1775        mTextColor = ColorStateList.valueOf(color);
1776        updateTextColors();
1777    }
1778
1779    /**
1780     * Sets the text color.
1781     *
1782     * @attr ref android.R.styleable#TextView_textColor
1783     */
1784    public void setTextColor(ColorStateList colors) {
1785        if (colors == null) {
1786            throw new NullPointerException();
1787        }
1788
1789        mTextColor = colors;
1790        updateTextColors();
1791    }
1792
1793    /**
1794     * Return the set of text colors.
1795     *
1796     * @return Returns the set of text colors.
1797     */
1798    public final ColorStateList getTextColors() {
1799        return mTextColor;
1800    }
1801
1802    /**
1803     * <p>Return the current color selected for normal text.</p>
1804     *
1805     * @return Returns the current text color.
1806     */
1807    public final int getCurrentTextColor() {
1808        return mCurTextColor;
1809    }
1810
1811    /**
1812     * Sets the color used to display the selection highlight.
1813     *
1814     * @attr ref android.R.styleable#TextView_textColorHighlight
1815     */
1816    @android.view.RemotableViewMethod
1817    public void setHighlightColor(int color) {
1818        if (mHighlightColor != color) {
1819            mHighlightColor = color;
1820            invalidate();
1821        }
1822    }
1823
1824    /**
1825     * Gives the text a shadow of the specified radius and color, the specified
1826     * distance from its normal position.
1827     *
1828     * @attr ref android.R.styleable#TextView_shadowColor
1829     * @attr ref android.R.styleable#TextView_shadowDx
1830     * @attr ref android.R.styleable#TextView_shadowDy
1831     * @attr ref android.R.styleable#TextView_shadowRadius
1832     */
1833    public void setShadowLayer(float radius, float dx, float dy, int color) {
1834        mTextPaint.setShadowLayer(radius, dx, dy, color);
1835
1836        mShadowRadius = radius;
1837        mShadowDx = dx;
1838        mShadowDy = dy;
1839
1840        invalidate();
1841    }
1842
1843    /**
1844     * @return the base paint used for the text.  Please use this only to
1845     * consult the Paint's properties and not to change them.
1846     */
1847    public TextPaint getPaint() {
1848        return mTextPaint;
1849    }
1850
1851    /**
1852     * Sets the autolink mask of the text.  See {@link
1853     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1854     * possible values.
1855     *
1856     * @attr ref android.R.styleable#TextView_autoLink
1857     */
1858    @android.view.RemotableViewMethod
1859    public final void setAutoLinkMask(int mask) {
1860        mAutoLinkMask = mask;
1861    }
1862
1863    /**
1864     * Sets whether the movement method will automatically be set to
1865     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1866     * set to nonzero and links are detected in {@link #setText}.
1867     * The default is true.
1868     *
1869     * @attr ref android.R.styleable#TextView_linksClickable
1870     */
1871    @android.view.RemotableViewMethod
1872    public final void setLinksClickable(boolean whether) {
1873        mLinksClickable = whether;
1874    }
1875
1876    /**
1877     * Returns whether the movement method will automatically be set to
1878     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1879     * set to nonzero and links are detected in {@link #setText}.
1880     * The default is true.
1881     *
1882     * @attr ref android.R.styleable#TextView_linksClickable
1883     */
1884    public final boolean getLinksClickable() {
1885        return mLinksClickable;
1886    }
1887
1888    /**
1889     * Returns the list of URLSpans attached to the text
1890     * (by {@link Linkify} or otherwise) if any.  You can call
1891     * {@link URLSpan#getURL} on them to find where they link to
1892     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
1893     * to find the region of the text they are attached to.
1894     */
1895    public URLSpan[] getUrls() {
1896        if (mText instanceof Spanned) {
1897            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
1898        } else {
1899            return new URLSpan[0];
1900        }
1901    }
1902
1903    /**
1904     * Sets the color of the hint text.
1905     *
1906     * @attr ref android.R.styleable#TextView_textColorHint
1907     */
1908    @android.view.RemotableViewMethod
1909    public final void setHintTextColor(int color) {
1910        mHintTextColor = ColorStateList.valueOf(color);
1911        updateTextColors();
1912    }
1913
1914    /**
1915     * Sets the color of the hint text.
1916     *
1917     * @attr ref android.R.styleable#TextView_textColorHint
1918     */
1919    public final void setHintTextColor(ColorStateList colors) {
1920        mHintTextColor = colors;
1921        updateTextColors();
1922    }
1923
1924    /**
1925     * <p>Return the color used to paint the hint text.</p>
1926     *
1927     * @return Returns the list of hint text colors.
1928     */
1929    public final ColorStateList getHintTextColors() {
1930        return mHintTextColor;
1931    }
1932
1933    /**
1934     * <p>Return the current color selected to paint the hint text.</p>
1935     *
1936     * @return Returns the current hint text color.
1937     */
1938    public final int getCurrentHintTextColor() {
1939        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
1940    }
1941
1942    /**
1943     * Sets the color of links in the text.
1944     *
1945     * @attr ref android.R.styleable#TextView_textColorLink
1946     */
1947    @android.view.RemotableViewMethod
1948    public final void setLinkTextColor(int color) {
1949        mLinkTextColor = ColorStateList.valueOf(color);
1950        updateTextColors();
1951    }
1952
1953    /**
1954     * Sets the color of links in the text.
1955     *
1956     * @attr ref android.R.styleable#TextView_textColorLink
1957     */
1958    public final void setLinkTextColor(ColorStateList colors) {
1959        mLinkTextColor = colors;
1960        updateTextColors();
1961    }
1962
1963    /**
1964     * <p>Returns the color used to paint links in the text.</p>
1965     *
1966     * @return Returns the list of link text colors.
1967     */
1968    public final ColorStateList getLinkTextColors() {
1969        return mLinkTextColor;
1970    }
1971
1972    /**
1973     * Sets the horizontal alignment of the text and the
1974     * vertical gravity that will be used when there is extra space
1975     * in the TextView beyond what is required for the text itself.
1976     *
1977     * @see android.view.Gravity
1978     * @attr ref android.R.styleable#TextView_gravity
1979     */
1980    public void setGravity(int gravity) {
1981        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == 0) {
1982            gravity |= Gravity.LEFT;
1983        }
1984        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
1985            gravity |= Gravity.TOP;
1986        }
1987
1988        boolean newLayout = false;
1989
1990        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) !=
1991            (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK)) {
1992            newLayout = true;
1993        }
1994
1995        if (gravity != mGravity) {
1996            invalidate();
1997        }
1998
1999        mGravity = gravity;
2000
2001        if (mLayout != null && newLayout) {
2002            // XXX this is heavy-handed because no actual content changes.
2003            int want = mLayout.getWidth();
2004            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
2005
2006            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
2007                          mRight - mLeft - getCompoundPaddingLeft() -
2008                          getCompoundPaddingRight(), true);
2009        }
2010    }
2011
2012    /**
2013     * Returns the horizontal and vertical alignment of this TextView.
2014     *
2015     * @see android.view.Gravity
2016     * @attr ref android.R.styleable#TextView_gravity
2017     */
2018    public int getGravity() {
2019        return mGravity;
2020    }
2021
2022    /**
2023     * @return the flags on the Paint being used to display the text.
2024     * @see Paint#getFlags
2025     */
2026    public int getPaintFlags() {
2027        return mTextPaint.getFlags();
2028    }
2029
2030    /**
2031     * Sets flags on the Paint being used to display the text and
2032     * reflows the text if they are different from the old flags.
2033     * @see Paint#setFlags
2034     */
2035    @android.view.RemotableViewMethod
2036    public void setPaintFlags(int flags) {
2037        if (mTextPaint.getFlags() != flags) {
2038            mTextPaint.setFlags(flags);
2039
2040            if (mLayout != null) {
2041                nullLayouts();
2042                requestLayout();
2043                invalidate();
2044            }
2045        }
2046    }
2047
2048    /**
2049     * Sets whether the text should be allowed to be wider than the
2050     * View is.  If false, it will be wrapped to the width of the View.
2051     *
2052     * @attr ref android.R.styleable#TextView_scrollHorizontally
2053     */
2054    public void setHorizontallyScrolling(boolean whether) {
2055        mHorizontallyScrolling = whether;
2056
2057        if (mLayout != null) {
2058            nullLayouts();
2059            requestLayout();
2060            invalidate();
2061        }
2062    }
2063
2064    /**
2065     * Makes the TextView at least this many lines tall
2066     *
2067     * @attr ref android.R.styleable#TextView_minLines
2068     */
2069    @android.view.RemotableViewMethod
2070    public void setMinLines(int minlines) {
2071        mMinimum = minlines;
2072        mMinMode = LINES;
2073
2074        requestLayout();
2075        invalidate();
2076    }
2077
2078    /**
2079     * Makes the TextView at least this many pixels tall
2080     *
2081     * @attr ref android.R.styleable#TextView_minHeight
2082     */
2083    @android.view.RemotableViewMethod
2084    public void setMinHeight(int minHeight) {
2085        mMinimum = minHeight;
2086        mMinMode = PIXELS;
2087
2088        requestLayout();
2089        invalidate();
2090    }
2091
2092    /**
2093     * Makes the TextView at most this many lines tall
2094     *
2095     * @attr ref android.R.styleable#TextView_maxLines
2096     */
2097    @android.view.RemotableViewMethod
2098    public void setMaxLines(int maxlines) {
2099        mMaximum = maxlines;
2100        mMaxMode = LINES;
2101
2102        requestLayout();
2103        invalidate();
2104    }
2105
2106    /**
2107     * Makes the TextView at most this many pixels tall
2108     *
2109     * @attr ref android.R.styleable#TextView_maxHeight
2110     */
2111    @android.view.RemotableViewMethod
2112    public void setMaxHeight(int maxHeight) {
2113        mMaximum = maxHeight;
2114        mMaxMode = PIXELS;
2115
2116        requestLayout();
2117        invalidate();
2118    }
2119
2120    /**
2121     * Makes the TextView exactly this many lines tall
2122     *
2123     * @attr ref android.R.styleable#TextView_lines
2124     */
2125    @android.view.RemotableViewMethod
2126    public void setLines(int lines) {
2127        mMaximum = mMinimum = lines;
2128        mMaxMode = mMinMode = LINES;
2129
2130        requestLayout();
2131        invalidate();
2132    }
2133
2134    /**
2135     * Makes the TextView exactly this many pixels tall.
2136     * You could do the same thing by specifying this number in the
2137     * LayoutParams.
2138     *
2139     * @attr ref android.R.styleable#TextView_height
2140     */
2141    @android.view.RemotableViewMethod
2142    public void setHeight(int pixels) {
2143        mMaximum = mMinimum = pixels;
2144        mMaxMode = mMinMode = PIXELS;
2145
2146        requestLayout();
2147        invalidate();
2148    }
2149
2150    /**
2151     * Makes the TextView at least this many ems wide
2152     *
2153     * @attr ref android.R.styleable#TextView_minEms
2154     */
2155    @android.view.RemotableViewMethod
2156    public void setMinEms(int minems) {
2157        mMinWidth = minems;
2158        mMinWidthMode = EMS;
2159
2160        requestLayout();
2161        invalidate();
2162    }
2163
2164    /**
2165     * Makes the TextView at least this many pixels wide
2166     *
2167     * @attr ref android.R.styleable#TextView_minWidth
2168     */
2169    @android.view.RemotableViewMethod
2170    public void setMinWidth(int minpixels) {
2171        mMinWidth = minpixels;
2172        mMinWidthMode = PIXELS;
2173
2174        requestLayout();
2175        invalidate();
2176    }
2177
2178    /**
2179     * Makes the TextView at most this many ems wide
2180     *
2181     * @attr ref android.R.styleable#TextView_maxEms
2182     */
2183    @android.view.RemotableViewMethod
2184    public void setMaxEms(int maxems) {
2185        mMaxWidth = maxems;
2186        mMaxWidthMode = EMS;
2187
2188        requestLayout();
2189        invalidate();
2190    }
2191
2192    /**
2193     * Makes the TextView at most this many pixels wide
2194     *
2195     * @attr ref android.R.styleable#TextView_maxWidth
2196     */
2197    @android.view.RemotableViewMethod
2198    public void setMaxWidth(int maxpixels) {
2199        mMaxWidth = maxpixels;
2200        mMaxWidthMode = PIXELS;
2201
2202        requestLayout();
2203        invalidate();
2204    }
2205
2206    /**
2207     * Makes the TextView exactly this many ems wide
2208     *
2209     * @attr ref android.R.styleable#TextView_ems
2210     */
2211    @android.view.RemotableViewMethod
2212    public void setEms(int ems) {
2213        mMaxWidth = mMinWidth = ems;
2214        mMaxWidthMode = mMinWidthMode = EMS;
2215
2216        requestLayout();
2217        invalidate();
2218    }
2219
2220    /**
2221     * Makes the TextView exactly this many pixels wide.
2222     * You could do the same thing by specifying this number in the
2223     * LayoutParams.
2224     *
2225     * @attr ref android.R.styleable#TextView_width
2226     */
2227    @android.view.RemotableViewMethod
2228    public void setWidth(int pixels) {
2229        mMaxWidth = mMinWidth = pixels;
2230        mMaxWidthMode = mMinWidthMode = PIXELS;
2231
2232        requestLayout();
2233        invalidate();
2234    }
2235
2236
2237    /**
2238     * Sets line spacing for this TextView.  Each line will have its height
2239     * multiplied by <code>mult</code> and have <code>add</code> added to it.
2240     *
2241     * @attr ref android.R.styleable#TextView_lineSpacingExtra
2242     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
2243     */
2244    public void setLineSpacing(float add, float mult) {
2245        mSpacingMult = mult;
2246        mSpacingAdd = add;
2247
2248        if (mLayout != null) {
2249            nullLayouts();
2250            requestLayout();
2251            invalidate();
2252        }
2253    }
2254
2255    /**
2256     * Convenience method: Append the specified text to the TextView's
2257     * display buffer, upgrading it to BufferType.EDITABLE if it was
2258     * not already editable.
2259     */
2260    public final void append(CharSequence text) {
2261        append(text, 0, text.length());
2262    }
2263
2264    /**
2265     * Convenience method: Append the specified text slice to the TextView's
2266     * display buffer, upgrading it to BufferType.EDITABLE if it was
2267     * not already editable.
2268     */
2269    public void append(CharSequence text, int start, int end) {
2270        if (!(mText instanceof Editable)) {
2271            setText(mText, BufferType.EDITABLE);
2272        }
2273
2274        ((Editable) mText).append(text, start, end);
2275    }
2276
2277    private void updateTextColors() {
2278        boolean inval = false;
2279        int color = mTextColor.getColorForState(getDrawableState(), 0);
2280        if (color != mCurTextColor) {
2281            mCurTextColor = color;
2282            inval = true;
2283        }
2284        if (mLinkTextColor != null) {
2285            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
2286            if (color != mTextPaint.linkColor) {
2287                mTextPaint.linkColor = color;
2288                inval = true;
2289            }
2290        }
2291        if (mHintTextColor != null) {
2292            color = mHintTextColor.getColorForState(getDrawableState(), 0);
2293            if (color != mCurHintTextColor && mText.length() == 0) {
2294                mCurHintTextColor = color;
2295                inval = true;
2296            }
2297        }
2298        if (inval) {
2299            invalidate();
2300        }
2301    }
2302
2303    @Override
2304    protected void drawableStateChanged() {
2305        super.drawableStateChanged();
2306        if (mTextColor != null && mTextColor.isStateful()
2307                || (mHintTextColor != null && mHintTextColor.isStateful())
2308                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
2309            updateTextColors();
2310        }
2311
2312        final Drawables dr = mDrawables;
2313        if (dr != null) {
2314            int[] state = getDrawableState();
2315            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
2316                dr.mDrawableTop.setState(state);
2317            }
2318            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
2319                dr.mDrawableBottom.setState(state);
2320            }
2321            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
2322                dr.mDrawableLeft.setState(state);
2323            }
2324            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
2325                dr.mDrawableRight.setState(state);
2326            }
2327        }
2328    }
2329
2330    /**
2331     * User interface state that is stored by TextView for implementing
2332     * {@link View#onSaveInstanceState}.
2333     */
2334    public static class SavedState extends BaseSavedState {
2335        int selStart;
2336        int selEnd;
2337        CharSequence text;
2338        boolean frozenWithFocus;
2339        CharSequence error;
2340
2341        SavedState(Parcelable superState) {
2342            super(superState);
2343        }
2344
2345        @Override
2346        public void writeToParcel(Parcel out, int flags) {
2347            super.writeToParcel(out, flags);
2348            out.writeInt(selStart);
2349            out.writeInt(selEnd);
2350            out.writeInt(frozenWithFocus ? 1 : 0);
2351            TextUtils.writeToParcel(text, out, flags);
2352
2353            if (error == null) {
2354                out.writeInt(0);
2355            } else {
2356                out.writeInt(1);
2357                TextUtils.writeToParcel(error, out, flags);
2358            }
2359        }
2360
2361        @Override
2362        public String toString() {
2363            String str = "TextView.SavedState{"
2364                    + Integer.toHexString(System.identityHashCode(this))
2365                    + " start=" + selStart + " end=" + selEnd;
2366            if (text != null) {
2367                str += " text=" + text;
2368            }
2369            return str + "}";
2370        }
2371
2372        @SuppressWarnings("hiding")
2373        public static final Parcelable.Creator<SavedState> CREATOR
2374                = new Parcelable.Creator<SavedState>() {
2375            public SavedState createFromParcel(Parcel in) {
2376                return new SavedState(in);
2377            }
2378
2379            public SavedState[] newArray(int size) {
2380                return new SavedState[size];
2381            }
2382        };
2383
2384        private SavedState(Parcel in) {
2385            super(in);
2386            selStart = in.readInt();
2387            selEnd = in.readInt();
2388            frozenWithFocus = (in.readInt() != 0);
2389            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2390
2391            if (in.readInt() != 0) {
2392                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2393            }
2394        }
2395    }
2396
2397    @Override
2398    public Parcelable onSaveInstanceState() {
2399        Parcelable superState = super.onSaveInstanceState();
2400
2401        // Save state if we are forced to
2402        boolean save = mFreezesText;
2403        int start = 0;
2404        int end = 0;
2405
2406        if (mText != null) {
2407            start = getSelectionStart();
2408            end = getSelectionEnd();
2409            if (start >= 0 || end >= 0) {
2410                // Or save state if there is a selection
2411                save = true;
2412            }
2413        }
2414
2415        if (save) {
2416            SavedState ss = new SavedState(superState);
2417            // XXX Should also save the current scroll position!
2418            ss.selStart = start;
2419            ss.selEnd = end;
2420
2421            if (mText instanceof Spanned) {
2422                /*
2423                 * Calling setText() strips off any ChangeWatchers;
2424                 * strip them now to avoid leaking references.
2425                 * But do it to a copy so that if there are any
2426                 * further changes to the text of this view, it
2427                 * won't get into an inconsistent state.
2428                 */
2429
2430                Spannable sp = new SpannableString(mText);
2431
2432                for (ChangeWatcher cw :
2433                     sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
2434                    sp.removeSpan(cw);
2435                }
2436
2437                ss.text = sp;
2438            } else {
2439                ss.text = mText.toString();
2440            }
2441
2442            if (isFocused() && start >= 0 && end >= 0) {
2443                ss.frozenWithFocus = true;
2444            }
2445
2446            ss.error = mError;
2447
2448            return ss;
2449        }
2450
2451        return superState;
2452    }
2453
2454    @Override
2455    public void onRestoreInstanceState(Parcelable state) {
2456        if (!(state instanceof SavedState)) {
2457            super.onRestoreInstanceState(state);
2458            return;
2459        }
2460
2461        SavedState ss = (SavedState)state;
2462        super.onRestoreInstanceState(ss.getSuperState());
2463
2464        // XXX restore buffer type too, as well as lots of other stuff
2465        if (ss.text != null) {
2466            setText(ss.text);
2467        }
2468
2469        if (ss.selStart >= 0 && ss.selEnd >= 0) {
2470            if (mText instanceof Spannable) {
2471                int len = mText.length();
2472
2473                if (ss.selStart > len || ss.selEnd > len) {
2474                    String restored = "";
2475
2476                    if (ss.text != null) {
2477                        restored = "(restored) ";
2478                    }
2479
2480                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
2481                          "/" + ss.selEnd + " out of range for " + restored +
2482                          "text " + mText);
2483                } else {
2484                    Selection.setSelection((Spannable) mText, ss.selStart,
2485                                           ss.selEnd);
2486
2487                    if (ss.frozenWithFocus) {
2488                        mFrozenWithFocus = true;
2489                    }
2490                }
2491            }
2492        }
2493
2494        if (ss.error != null) {
2495            final CharSequence error = ss.error;
2496            // Display the error later, after the first layout pass
2497            post(new Runnable() {
2498                public void run() {
2499                    setError(error);
2500                }
2501            });
2502        }
2503    }
2504
2505    /**
2506     * Control whether this text view saves its entire text contents when
2507     * freezing to an icicle, in addition to dynamic state such as cursor
2508     * position.  By default this is false, not saving the text.  Set to true
2509     * if the text in the text view is not being saved somewhere else in
2510     * persistent storage (such as in a content provider) so that if the
2511     * view is later thawed the user will not lose their data.
2512     *
2513     * @param freezesText Controls whether a frozen icicle should include the
2514     * entire text data: true to include it, false to not.
2515     *
2516     * @attr ref android.R.styleable#TextView_freezesText
2517     */
2518    @android.view.RemotableViewMethod
2519    public void setFreezesText(boolean freezesText) {
2520        mFreezesText = freezesText;
2521    }
2522
2523    /**
2524     * Return whether this text view is including its entire text contents
2525     * in frozen icicles.
2526     *
2527     * @return Returns true if text is included, false if it isn't.
2528     *
2529     * @see #setFreezesText
2530     */
2531    public boolean getFreezesText() {
2532        return mFreezesText;
2533    }
2534
2535    ///////////////////////////////////////////////////////////////////////////
2536
2537    /**
2538     * Sets the Factory used to create new Editables.
2539     */
2540    public final void setEditableFactory(Editable.Factory factory) {
2541        mEditableFactory = factory;
2542        setText(mText);
2543    }
2544
2545    /**
2546     * Sets the Factory used to create new Spannables.
2547     */
2548    public final void setSpannableFactory(Spannable.Factory factory) {
2549        mSpannableFactory = factory;
2550        setText(mText);
2551    }
2552
2553    /**
2554     * Sets the string value of the TextView. TextView <em>does not</em> accept
2555     * HTML-like formatting, which you can do with text strings in XML resource files.
2556     * To style your strings, attach android.text.style.* objects to a
2557     * {@link android.text.SpannableString SpannableString}, or see the
2558     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
2559     * Available Resource Types</a> documentation for an example of setting
2560     * formatted text in the XML resource file.
2561     *
2562     * @attr ref android.R.styleable#TextView_text
2563     */
2564    @android.view.RemotableViewMethod
2565    public final void setText(CharSequence text) {
2566        setText(text, mBufferType);
2567    }
2568
2569    /**
2570     * Like {@link #setText(CharSequence)},
2571     * except that the cursor position (if any) is retained in the new text.
2572     *
2573     * @param text The new text to place in the text view.
2574     *
2575     * @see #setText(CharSequence)
2576     */
2577    @android.view.RemotableViewMethod
2578    public final void setTextKeepState(CharSequence text) {
2579        setTextKeepState(text, mBufferType);
2580    }
2581
2582    /**
2583     * Sets the text that this TextView is to display (see
2584     * {@link #setText(CharSequence)}) and also sets whether it is stored
2585     * in a styleable/spannable buffer and whether it is editable.
2586     *
2587     * @attr ref android.R.styleable#TextView_text
2588     * @attr ref android.R.styleable#TextView_bufferType
2589     */
2590    public void setText(CharSequence text, BufferType type) {
2591        setText(text, type, true, 0);
2592
2593        if (mCharWrapper != null) {
2594            mCharWrapper.mChars = null;
2595        }
2596    }
2597
2598    private void setText(CharSequence text, BufferType type,
2599                         boolean notifyBefore, int oldlen) {
2600        if (text == null) {
2601            text = "";
2602        }
2603
2604        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
2605
2606        if (text instanceof Spanned &&
2607            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
2608            setHorizontalFadingEdgeEnabled(true);
2609            setEllipsize(TextUtils.TruncateAt.MARQUEE);
2610        }
2611
2612        int n = mFilters.length;
2613        for (int i = 0; i < n; i++) {
2614            CharSequence out = mFilters[i].filter(text, 0, text.length(),
2615                                                  EMPTY_SPANNED, 0, 0);
2616            if (out != null) {
2617                text = out;
2618            }
2619        }
2620
2621        if (notifyBefore) {
2622            if (mText != null) {
2623                oldlen = mText.length();
2624                sendBeforeTextChanged(mText, 0, oldlen, text.length());
2625            } else {
2626                sendBeforeTextChanged("", 0, 0, text.length());
2627            }
2628        }
2629
2630        boolean needEditableForNotification = false;
2631
2632        if (mListeners != null && mListeners.size() != 0) {
2633            needEditableForNotification = true;
2634        }
2635
2636        if (type == BufferType.EDITABLE || mInput != null ||
2637            needEditableForNotification) {
2638            Editable t = mEditableFactory.newEditable(text);
2639            text = t;
2640            setFilters(t, mFilters);
2641            InputMethodManager imm = InputMethodManager.peekInstance();
2642            if (imm != null) imm.restartInput(this);
2643        } else if (type == BufferType.SPANNABLE || mMovement != null) {
2644            text = mSpannableFactory.newSpannable(text);
2645        } else if (!(text instanceof CharWrapper)) {
2646            text = TextUtils.stringOrSpannedString(text);
2647        }
2648
2649        if (mAutoLinkMask != 0) {
2650            Spannable s2;
2651
2652            if (type == BufferType.EDITABLE || text instanceof Spannable) {
2653                s2 = (Spannable) text;
2654            } else {
2655                s2 = mSpannableFactory.newSpannable(text);
2656            }
2657
2658            if (Linkify.addLinks(s2, mAutoLinkMask)) {
2659                text = s2;
2660                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
2661
2662                /*
2663                 * We must go ahead and set the text before changing the
2664                 * movement method, because setMovementMethod() may call
2665                 * setText() again to try to upgrade the buffer type.
2666                 */
2667                mText = text;
2668
2669                if (mLinksClickable) {
2670                    setMovementMethod(LinkMovementMethod.getInstance());
2671                }
2672            }
2673        }
2674
2675        mBufferType = type;
2676        mText = text;
2677
2678        if (mTransformation == null)
2679            mTransformed = text;
2680        else
2681            mTransformed = mTransformation.getTransformation(text, this);
2682
2683        final int textLength = text.length();
2684
2685        if (text instanceof Spannable) {
2686            Spannable sp = (Spannable) text;
2687
2688            // Remove any ChangeWatchers that might have come
2689            // from other TextViews.
2690            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
2691            final int count = watchers.length;
2692            for (int i = 0; i < count; i++)
2693                sp.removeSpan(watchers[i]);
2694
2695            if (mChangeWatcher == null)
2696                mChangeWatcher = new ChangeWatcher();
2697
2698            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
2699                       (PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
2700
2701            if (mInput != null) {
2702                sp.setSpan(mInput, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2703            }
2704
2705            if (mTransformation != null) {
2706                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2707
2708            }
2709
2710            if (mMovement != null) {
2711                mMovement.initialize(this, (Spannable) text);
2712
2713                /*
2714                 * Initializing the movement method will have set the
2715                 * selection, so reset mSelectionMoved to keep that from
2716                 * interfering with the normal on-focus selection-setting.
2717                 */
2718                mSelectionMoved = false;
2719            }
2720        }
2721
2722        if (mLayout != null) {
2723            checkForRelayout();
2724        }
2725
2726        sendOnTextChanged(text, 0, oldlen, textLength);
2727        onTextChanged(text, 0, oldlen, textLength);
2728
2729        if (needEditableForNotification) {
2730            sendAfterTextChanged((Editable) text);
2731        }
2732
2733        // SelectionModifierCursorController depends on canSelectText, which depends on text
2734        prepareCursorControllers();
2735    }
2736
2737    /**
2738     * Sets the TextView to display the specified slice of the specified
2739     * char array.  You must promise that you will not change the contents
2740     * of the array except for right before another call to setText(),
2741     * since the TextView has no way to know that the text
2742     * has changed and that it needs to invalidate and re-layout.
2743     */
2744    public final void setText(char[] text, int start, int len) {
2745        int oldlen = 0;
2746
2747        if (start < 0 || len < 0 || start + len > text.length) {
2748            throw new IndexOutOfBoundsException(start + ", " + len);
2749        }
2750
2751        /*
2752         * We must do the before-notification here ourselves because if
2753         * the old text is a CharWrapper we destroy it before calling
2754         * into the normal path.
2755         */
2756        if (mText != null) {
2757            oldlen = mText.length();
2758            sendBeforeTextChanged(mText, 0, oldlen, len);
2759        } else {
2760            sendBeforeTextChanged("", 0, 0, len);
2761        }
2762
2763        if (mCharWrapper == null) {
2764            mCharWrapper = new CharWrapper(text, start, len);
2765        } else {
2766            mCharWrapper.set(text, start, len);
2767        }
2768
2769        setText(mCharWrapper, mBufferType, false, oldlen);
2770    }
2771
2772    private static class CharWrapper
2773            implements CharSequence, GetChars, GraphicsOperations {
2774        private char[] mChars;
2775        private int mStart, mLength;
2776
2777        public CharWrapper(char[] chars, int start, int len) {
2778            mChars = chars;
2779            mStart = start;
2780            mLength = len;
2781        }
2782
2783        /* package */ void set(char[] chars, int start, int len) {
2784            mChars = chars;
2785            mStart = start;
2786            mLength = len;
2787        }
2788
2789        public int length() {
2790            return mLength;
2791        }
2792
2793        public char charAt(int off) {
2794            return mChars[off + mStart];
2795        }
2796
2797        @Override
2798        public String toString() {
2799            return new String(mChars, mStart, mLength);
2800        }
2801
2802        public CharSequence subSequence(int start, int end) {
2803            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2804                throw new IndexOutOfBoundsException(start + ", " + end);
2805            }
2806
2807            return new String(mChars, start + mStart, end - start);
2808        }
2809
2810        public void getChars(int start, int end, char[] buf, int off) {
2811            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2812                throw new IndexOutOfBoundsException(start + ", " + end);
2813            }
2814
2815            System.arraycopy(mChars, start + mStart, buf, off, end - start);
2816        }
2817
2818        public void drawText(Canvas c, int start, int end,
2819                             float x, float y, Paint p) {
2820            c.drawText(mChars, start + mStart, end - start, x, y, p);
2821        }
2822
2823        public void drawTextRun(Canvas c, int start, int end,
2824                int contextStart, int contextEnd, float x, float y, int flags, Paint p) {
2825            int count = end - start;
2826            int contextCount = contextEnd - contextStart;
2827            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
2828                    contextCount, x, y, flags, p);
2829        }
2830
2831        public float measureText(int start, int end, Paint p) {
2832            return p.measureText(mChars, start + mStart, end - start);
2833        }
2834
2835        public int getTextWidths(int start, int end, float[] widths, Paint p) {
2836            return p.getTextWidths(mChars, start + mStart, end - start, widths);
2837        }
2838
2839        public float getTextRunAdvances(int start, int end, int contextStart,
2840                int contextEnd, int flags, float[] advances, int advancesIndex,
2841                Paint p) {
2842            int count = end - start;
2843            int contextCount = contextEnd - contextStart;
2844            return p.getTextRunAdvances(mChars, start + mStart, count,
2845                    contextStart + mStart, contextCount, flags, advances,
2846                    advancesIndex);
2847        }
2848
2849        public int getTextRunCursor(int contextStart, int contextEnd, int flags,
2850                int offset, int cursorOpt, Paint p) {
2851            int contextCount = contextEnd - contextStart;
2852            return p.getTextRunCursor(mChars, contextStart + mStart,
2853                    contextCount, flags, offset + mStart, cursorOpt);
2854        }
2855    }
2856
2857    /**
2858     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
2859     * except that the cursor position (if any) is retained in the new text.
2860     *
2861     * @see #setText(CharSequence, android.widget.TextView.BufferType)
2862     */
2863    public final void setTextKeepState(CharSequence text, BufferType type) {
2864        int start = getSelectionStart();
2865        int end = getSelectionEnd();
2866        int len = text.length();
2867
2868        setText(text, type);
2869
2870        if (start >= 0 || end >= 0) {
2871            if (mText instanceof Spannable) {
2872                Selection.setSelection((Spannable) mText,
2873                                       Math.max(0, Math.min(start, len)),
2874                                       Math.max(0, Math.min(end, len)));
2875            }
2876        }
2877    }
2878
2879    @android.view.RemotableViewMethod
2880    public final void setText(int resid) {
2881        setText(getContext().getResources().getText(resid));
2882    }
2883
2884    public final void setText(int resid, BufferType type) {
2885        setText(getContext().getResources().getText(resid), type);
2886    }
2887
2888    /**
2889     * Sets the text to be displayed when the text of the TextView is empty.
2890     * Null means to use the normal empty text. The hint does not currently
2891     * participate in determining the size of the view.
2892     *
2893     * @attr ref android.R.styleable#TextView_hint
2894     */
2895    @android.view.RemotableViewMethod
2896    public final void setHint(CharSequence hint) {
2897        mHint = TextUtils.stringOrSpannedString(hint);
2898
2899        if (mLayout != null) {
2900            checkForRelayout();
2901        }
2902
2903        if (mText.length() == 0) {
2904            invalidate();
2905        }
2906    }
2907
2908    /**
2909     * Sets the text to be displayed when the text of the TextView is empty,
2910     * from a resource.
2911     *
2912     * @attr ref android.R.styleable#TextView_hint
2913     */
2914    @android.view.RemotableViewMethod
2915    public final void setHint(int resid) {
2916        setHint(getContext().getResources().getText(resid));
2917    }
2918
2919    /**
2920     * Returns the hint that is displayed when the text of the TextView
2921     * is empty.
2922     *
2923     * @attr ref android.R.styleable#TextView_hint
2924     */
2925    @ViewDebug.CapturedViewProperty
2926    public CharSequence getHint() {
2927        return mHint;
2928    }
2929
2930    /**
2931     * Set the type of the content with a constant as defined for
2932     * {@link EditorInfo#inputType}.  This will take care of changing
2933     * the key listener, by calling {@link #setKeyListener(KeyListener)}, to
2934     * match the given content type.  If the given content type is
2935     * {@link EditorInfo#TYPE_NULL} then a soft keyboard will
2936     * not be displayed for this text view.
2937     *
2938     * @see #getInputType()
2939     * @see #setRawInputType(int)
2940     * @see android.text.InputType
2941     * @attr ref android.R.styleable#TextView_inputType
2942     */
2943    public void setInputType(int type) {
2944        final boolean wasPassword = isPasswordInputType(mInputType);
2945        final boolean wasVisiblePassword = isVisiblePasswordInputType(mInputType);
2946        setInputType(type, false);
2947        final boolean isPassword = isPasswordInputType(type);
2948        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
2949        boolean forceUpdate = false;
2950        if (isPassword) {
2951            setTransformationMethod(PasswordTransformationMethod.getInstance());
2952            setTypefaceByIndex(MONOSPACE, 0);
2953        } else if (isVisiblePassword) {
2954            if (mTransformation == PasswordTransformationMethod.getInstance()) {
2955                forceUpdate = true;
2956            }
2957            setTypefaceByIndex(MONOSPACE, 0);
2958        } else if (wasPassword || wasVisiblePassword) {
2959            // not in password mode, clean up typeface and transformation
2960            setTypefaceByIndex(-1, -1);
2961            if (mTransformation == PasswordTransformationMethod.getInstance()) {
2962                forceUpdate = true;
2963            }
2964        }
2965
2966        boolean multiLine = (type&(EditorInfo.TYPE_MASK_CLASS
2967                        | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
2968                (EditorInfo.TYPE_CLASS_TEXT
2969                        | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
2970
2971        // We need to update the single line mode if it has changed or we
2972        // were previously in password mode.
2973        if (mSingleLine == multiLine || forceUpdate) {
2974            // Change single line mode, but only change the transformation if
2975            // we are not in password mode.
2976            applySingleLine(!multiLine, !isPassword);
2977        }
2978
2979        InputMethodManager imm = InputMethodManager.peekInstance();
2980        if (imm != null) imm.restartInput(this);
2981    }
2982
2983    private boolean isPasswordInputType(int inputType) {
2984        final int variation = inputType & (EditorInfo.TYPE_MASK_CLASS
2985                | EditorInfo.TYPE_MASK_VARIATION);
2986        return variation
2987                == (EditorInfo.TYPE_CLASS_TEXT
2988                        | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
2989    }
2990
2991    private boolean isVisiblePasswordInputType(int inputType) {
2992        final int variation = inputType & (EditorInfo.TYPE_MASK_CLASS
2993                | EditorInfo.TYPE_MASK_VARIATION);
2994        return variation
2995                == (EditorInfo.TYPE_CLASS_TEXT
2996                        | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
2997    }
2998
2999    /**
3000     * Directly change the content type integer of the text view, without
3001     * modifying any other state.
3002     * @see #setInputType(int)
3003     * @see android.text.InputType
3004     * @attr ref android.R.styleable#TextView_inputType
3005     */
3006    public void setRawInputType(int type) {
3007        mInputType = type;
3008    }
3009
3010    private void setInputType(int type, boolean direct) {
3011        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
3012        KeyListener input;
3013        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
3014            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
3015            TextKeyListener.Capitalize cap;
3016            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
3017                cap = TextKeyListener.Capitalize.CHARACTERS;
3018            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
3019                cap = TextKeyListener.Capitalize.WORDS;
3020            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
3021                cap = TextKeyListener.Capitalize.SENTENCES;
3022            } else {
3023                cap = TextKeyListener.Capitalize.NONE;
3024            }
3025            input = TextKeyListener.getInstance(autotext, cap);
3026        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
3027            input = DigitsKeyListener.getInstance(
3028                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
3029                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
3030        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
3031            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
3032                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
3033                    input = DateKeyListener.getInstance();
3034                    break;
3035                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
3036                    input = TimeKeyListener.getInstance();
3037                    break;
3038                default:
3039                    input = DateTimeKeyListener.getInstance();
3040                    break;
3041            }
3042        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
3043            input = DialerKeyListener.getInstance();
3044        } else {
3045            input = TextKeyListener.getInstance();
3046        }
3047        setRawInputType(type);
3048        if (direct) mInput = input;
3049        else {
3050            setKeyListenerOnly(input);
3051        }
3052    }
3053
3054    /**
3055     * Get the type of the content.
3056     *
3057     * @see #setInputType(int)
3058     * @see android.text.InputType
3059     */
3060    public int getInputType() {
3061        return mInputType;
3062    }
3063
3064    /**
3065     * Change the editor type integer associated with the text view, which
3066     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
3067     * has focus.
3068     * @see #getImeOptions
3069     * @see android.view.inputmethod.EditorInfo
3070     * @attr ref android.R.styleable#TextView_imeOptions
3071     */
3072    public void setImeOptions(int imeOptions) {
3073        if (mInputContentType == null) {
3074            mInputContentType = new InputContentType();
3075        }
3076        mInputContentType.imeOptions = imeOptions;
3077    }
3078
3079    /**
3080     * Get the type of the IME editor.
3081     *
3082     * @see #setImeOptions(int)
3083     * @see android.view.inputmethod.EditorInfo
3084     */
3085    public int getImeOptions() {
3086        return mInputContentType != null
3087                ? mInputContentType.imeOptions : EditorInfo.IME_NULL;
3088    }
3089
3090    /**
3091     * Change the custom IME action associated with the text view, which
3092     * will be reported to an IME with {@link EditorInfo#actionLabel}
3093     * and {@link EditorInfo#actionId} when it has focus.
3094     * @see #getImeActionLabel
3095     * @see #getImeActionId
3096     * @see android.view.inputmethod.EditorInfo
3097     * @attr ref android.R.styleable#TextView_imeActionLabel
3098     * @attr ref android.R.styleable#TextView_imeActionId
3099     */
3100    public void setImeActionLabel(CharSequence label, int actionId) {
3101        if (mInputContentType == null) {
3102            mInputContentType = new InputContentType();
3103        }
3104        mInputContentType.imeActionLabel = label;
3105        mInputContentType.imeActionId = actionId;
3106    }
3107
3108    /**
3109     * Get the IME action label previous set with {@link #setImeActionLabel}.
3110     *
3111     * @see #setImeActionLabel
3112     * @see android.view.inputmethod.EditorInfo
3113     */
3114    public CharSequence getImeActionLabel() {
3115        return mInputContentType != null
3116                ? mInputContentType.imeActionLabel : null;
3117    }
3118
3119    /**
3120     * Get the IME action ID previous set with {@link #setImeActionLabel}.
3121     *
3122     * @see #setImeActionLabel
3123     * @see android.view.inputmethod.EditorInfo
3124     */
3125    public int getImeActionId() {
3126        return mInputContentType != null
3127                ? mInputContentType.imeActionId : 0;
3128    }
3129
3130    /**
3131     * Set a special listener to be called when an action is performed
3132     * on the text view.  This will be called when the enter key is pressed,
3133     * or when an action supplied to the IME is selected by the user.  Setting
3134     * this means that the normal hard key event will not insert a newline
3135     * into the text view, even if it is multi-line; holding down the ALT
3136     * modifier will, however, allow the user to insert a newline character.
3137     */
3138    public void setOnEditorActionListener(OnEditorActionListener l) {
3139        if (mInputContentType == null) {
3140            mInputContentType = new InputContentType();
3141        }
3142        mInputContentType.onEditorActionListener = l;
3143    }
3144
3145    /**
3146     * Called when an attached input method calls
3147     * {@link InputConnection#performEditorAction(int)
3148     * InputConnection.performEditorAction()}
3149     * for this text view.  The default implementation will call your action
3150     * listener supplied to {@link #setOnEditorActionListener}, or perform
3151     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
3152     * EditorInfo.IME_ACTION_NEXT} or {@link EditorInfo#IME_ACTION_DONE
3153     * EditorInfo.IME_ACTION_DONE}.
3154     *
3155     * <p>For backwards compatibility, if no IME options have been set and the
3156     * text view would not normally advance focus on enter, then
3157     * the NEXT and DONE actions received here will be turned into an enter
3158     * key down/up pair to go through the normal key handling.
3159     *
3160     * @param actionCode The code of the action being performed.
3161     *
3162     * @see #setOnEditorActionListener
3163     */
3164    public void onEditorAction(int actionCode) {
3165        final InputContentType ict = mInputContentType;
3166        if (ict != null) {
3167            if (ict.onEditorActionListener != null) {
3168                if (ict.onEditorActionListener.onEditorAction(this,
3169                        actionCode, null)) {
3170                    return;
3171                }
3172            }
3173
3174            // This is the handling for some default action.
3175            // Note that for backwards compatibility we don't do this
3176            // default handling if explicit ime options have not been given,
3177            // instead turning this into the normal enter key codes that an
3178            // app may be expecting.
3179            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
3180                View v = focusSearch(FOCUS_DOWN);
3181                if (v != null) {
3182                    if (!v.requestFocus(FOCUS_DOWN)) {
3183                        throw new IllegalStateException("focus search returned a view " +
3184                                "that wasn't able to take focus!");
3185                    }
3186                }
3187                return;
3188
3189            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
3190                InputMethodManager imm = InputMethodManager.peekInstance();
3191                if (imm != null) {
3192                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
3193                }
3194                return;
3195            }
3196        }
3197
3198        Handler h = getHandler();
3199        if (h != null) {
3200            long eventTime = SystemClock.uptimeMillis();
3201            h.sendMessage(h.obtainMessage(ViewRoot.DISPATCH_KEY_FROM_IME,
3202                    new KeyEvent(eventTime, eventTime,
3203                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0, 0, 0,
3204                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3205                    | KeyEvent.FLAG_EDITOR_ACTION)));
3206            h.sendMessage(h.obtainMessage(ViewRoot.DISPATCH_KEY_FROM_IME,
3207                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
3208                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0, 0, 0,
3209                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3210                    | KeyEvent.FLAG_EDITOR_ACTION)));
3211        }
3212    }
3213
3214    /**
3215     * Set the private content type of the text, which is the
3216     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
3217     * field that will be filled in when creating an input connection.
3218     *
3219     * @see #getPrivateImeOptions()
3220     * @see EditorInfo#privateImeOptions
3221     * @attr ref android.R.styleable#TextView_privateImeOptions
3222     */
3223    public void setPrivateImeOptions(String type) {
3224        if (mInputContentType == null) mInputContentType = new InputContentType();
3225        mInputContentType.privateImeOptions = type;
3226    }
3227
3228    /**
3229     * Get the private type of the content.
3230     *
3231     * @see #setPrivateImeOptions(String)
3232     * @see EditorInfo#privateImeOptions
3233     */
3234    public String getPrivateImeOptions() {
3235        return mInputContentType != null
3236                ? mInputContentType.privateImeOptions : null;
3237    }
3238
3239    /**
3240     * Set the extra input data of the text, which is the
3241     * {@link EditorInfo#extras TextBoxAttribute.extras}
3242     * Bundle that will be filled in when creating an input connection.  The
3243     * given integer is the resource ID of an XML resource holding an
3244     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
3245     *
3246     * @see #getInputExtras(boolean)
3247     * @see EditorInfo#extras
3248     * @attr ref android.R.styleable#TextView_editorExtras
3249     */
3250    public void setInputExtras(int xmlResId)
3251            throws XmlPullParserException, IOException {
3252        XmlResourceParser parser = getResources().getXml(xmlResId);
3253        if (mInputContentType == null) mInputContentType = new InputContentType();
3254        mInputContentType.extras = new Bundle();
3255        getResources().parseBundleExtras(parser, mInputContentType.extras);
3256    }
3257
3258    /**
3259     * Retrieve the input extras currently associated with the text view, which
3260     * can be viewed as well as modified.
3261     *
3262     * @param create If true, the extras will be created if they don't already
3263     * exist.  Otherwise, null will be returned if none have been created.
3264     * @see #setInputExtras(int)
3265     * @see EditorInfo#extras
3266     * @attr ref android.R.styleable#TextView_editorExtras
3267     */
3268    public Bundle getInputExtras(boolean create) {
3269        if (mInputContentType == null) {
3270            if (!create) return null;
3271            mInputContentType = new InputContentType();
3272        }
3273        if (mInputContentType.extras == null) {
3274            if (!create) return null;
3275            mInputContentType.extras = new Bundle();
3276        }
3277        return mInputContentType.extras;
3278    }
3279
3280    /**
3281     * Returns the error message that was set to be displayed with
3282     * {@link #setError}, or <code>null</code> if no error was set
3283     * or if it the error was cleared by the widget after user input.
3284     */
3285    public CharSequence getError() {
3286        return mError;
3287    }
3288
3289    /**
3290     * Sets the right-hand compound drawable of the TextView to the "error"
3291     * icon and sets an error message that will be displayed in a popup when
3292     * the TextView has focus.  The icon and error message will be reset to
3293     * null when any key events cause changes to the TextView's text.  If the
3294     * <code>error</code> is <code>null</code>, the error message and icon
3295     * will be cleared.
3296     */
3297    @android.view.RemotableViewMethod
3298    public void setError(CharSequence error) {
3299        if (error == null) {
3300            setError(null, null);
3301        } else {
3302            Drawable dr = getContext().getResources().
3303                getDrawable(com.android.internal.R.drawable.
3304                            indicator_input_error);
3305
3306            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
3307            setError(error, dr);
3308        }
3309    }
3310
3311    /**
3312     * Sets the right-hand compound drawable of the TextView to the specified
3313     * icon and sets an error message that will be displayed in a popup when
3314     * the TextView has focus.  The icon and error message will be reset to
3315     * null when any key events cause changes to the TextView's text.  The
3316     * drawable must already have had {@link Drawable#setBounds} set on it.
3317     * If the <code>error</code> is <code>null</code>, the error message will
3318     * be cleared (and you should provide a <code>null</code> icon as well).
3319     */
3320    public void setError(CharSequence error, Drawable icon) {
3321        error = TextUtils.stringOrSpannedString(error);
3322
3323        mError = error;
3324        mErrorWasChanged = true;
3325        final Drawables dr = mDrawables;
3326        if (dr != null) {
3327            setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop,
3328                                 icon, dr.mDrawableBottom);
3329        } else {
3330            setCompoundDrawables(null, null, icon, null);
3331        }
3332
3333        if (error == null) {
3334            if (mPopup != null) {
3335                if (mPopup.isShowing()) {
3336                    mPopup.dismiss();
3337                }
3338
3339                mPopup = null;
3340            }
3341        } else {
3342            if (isFocused()) {
3343                showError();
3344            }
3345        }
3346    }
3347
3348    private void showError() {
3349        if (getWindowToken() == null) {
3350            mShowErrorAfterAttach = true;
3351            return;
3352        }
3353
3354        if (mPopup == null) {
3355            LayoutInflater inflater = LayoutInflater.from(getContext());
3356            final TextView err = (TextView) inflater.inflate(com.android.internal.R.layout.textview_hint,
3357                    null);
3358
3359            final float scale = getResources().getDisplayMetrics().density;
3360            mPopup = new ErrorPopup(err, (int) (200 * scale + 0.5f),
3361                    (int) (50 * scale + 0.5f));
3362            mPopup.setFocusable(false);
3363            // The user is entering text, so the input method is needed.  We
3364            // don't want the popup to be displayed on top of it.
3365            mPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED);
3366        }
3367
3368        TextView tv = (TextView) mPopup.getContentView();
3369        chooseSize(mPopup, mError, tv);
3370        tv.setText(mError);
3371
3372        mPopup.showAsDropDown(this, getErrorX(), getErrorY());
3373        mPopup.fixDirection(mPopup.isAboveAnchor());
3374    }
3375
3376    private static class ErrorPopup extends PopupWindow {
3377        private boolean mAbove = false;
3378        private final TextView mView;
3379
3380        ErrorPopup(TextView v, int width, int height) {
3381            super(v, width, height);
3382            mView = v;
3383        }
3384
3385        void fixDirection(boolean above) {
3386            mAbove = above;
3387
3388            if (above) {
3389                mView.setBackgroundResource(com.android.internal.R.drawable.popup_inline_error_above);
3390            } else {
3391                mView.setBackgroundResource(com.android.internal.R.drawable.popup_inline_error);
3392            }
3393        }
3394
3395        @Override
3396        public void update(int x, int y, int w, int h, boolean force) {
3397            super.update(x, y, w, h, force);
3398
3399            boolean above = isAboveAnchor();
3400            if (above != mAbove) {
3401                fixDirection(above);
3402            }
3403        }
3404    }
3405
3406    /**
3407     * Returns the Y offset to make the pointy top of the error point
3408     * at the middle of the error icon.
3409     */
3410    private int getErrorX() {
3411        /*
3412         * The "25" is the distance between the point and the right edge
3413         * of the background
3414         */
3415        final float scale = getResources().getDisplayMetrics().density;
3416
3417        final Drawables dr = mDrawables;
3418        return getWidth() - mPopup.getWidth()
3419                - getPaddingRight()
3420                - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f);
3421    }
3422
3423    /**
3424     * Returns the Y offset to make the pointy top of the error point
3425     * at the bottom of the error icon.
3426     */
3427    private int getErrorY() {
3428        /*
3429         * Compound, not extended, because the icon is not clipped
3430         * if the text height is smaller.
3431         */
3432        int vspace = mBottom - mTop -
3433                     getCompoundPaddingBottom() - getCompoundPaddingTop();
3434
3435        final Drawables dr = mDrawables;
3436        int icontop = getCompoundPaddingTop()
3437                + (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2;
3438
3439        /*
3440         * The "2" is the distance between the point and the top edge
3441         * of the background.
3442         */
3443
3444        return icontop + (dr != null ? dr.mDrawableHeightRight : 0)
3445                - getHeight() - 2;
3446    }
3447
3448    private void hideError() {
3449        if (mPopup != null) {
3450            if (mPopup.isShowing()) {
3451                mPopup.dismiss();
3452            }
3453        }
3454
3455        mShowErrorAfterAttach = false;
3456    }
3457
3458    private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) {
3459        int wid = tv.getPaddingLeft() + tv.getPaddingRight();
3460        int ht = tv.getPaddingTop() + tv.getPaddingBottom();
3461
3462        /*
3463         * Figure out how big the text would be if we laid it out to the
3464         * full width of this view minus the border.
3465         */
3466        int cap = getWidth() - wid;
3467        if (cap < 0) {
3468            cap = 200; // We must not be measured yet -- setFrame() will fix it.
3469        }
3470
3471        Layout l = new StaticLayout(text, tv.getPaint(), cap,
3472                                    Layout.Alignment.ALIGN_NORMAL, 1, 0, true);
3473        float max = 0;
3474        for (int i = 0; i < l.getLineCount(); i++) {
3475            max = Math.max(max, l.getLineWidth(i));
3476        }
3477
3478        /*
3479         * Now set the popup size to be big enough for the text plus the border.
3480         */
3481        pop.setWidth(wid + (int) Math.ceil(max));
3482        pop.setHeight(ht + l.getHeight());
3483    }
3484
3485
3486    @Override
3487    protected boolean setFrame(int l, int t, int r, int b) {
3488        boolean result = super.setFrame(l, t, r, b);
3489
3490        if (mPopup != null) {
3491            TextView tv = (TextView) mPopup.getContentView();
3492            chooseSize(mPopup, mError, tv);
3493            mPopup.update(this, getErrorX(), getErrorY(),
3494                          mPopup.getWidth(), mPopup.getHeight());
3495        }
3496
3497        restartMarqueeIfNeeded();
3498
3499        return result;
3500    }
3501
3502    private void restartMarqueeIfNeeded() {
3503        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3504            mRestartMarquee = false;
3505            startMarquee();
3506        }
3507    }
3508
3509    /**
3510     * Sets the list of input filters that will be used if the buffer is
3511     * Editable.  Has no effect otherwise.
3512     *
3513     * @attr ref android.R.styleable#TextView_maxLength
3514     */
3515    public void setFilters(InputFilter[] filters) {
3516        if (filters == null) {
3517            throw new IllegalArgumentException();
3518        }
3519
3520        mFilters = filters;
3521
3522        if (mText instanceof Editable) {
3523            setFilters((Editable) mText, filters);
3524        }
3525    }
3526
3527    /**
3528     * Sets the list of input filters on the specified Editable,
3529     * and includes mInput in the list if it is an InputFilter.
3530     */
3531    private void setFilters(Editable e, InputFilter[] filters) {
3532        if (mInput instanceof InputFilter) {
3533            InputFilter[] nf = new InputFilter[filters.length + 1];
3534
3535            System.arraycopy(filters, 0, nf, 0, filters.length);
3536            nf[filters.length] = (InputFilter) mInput;
3537
3538            e.setFilters(nf);
3539        } else {
3540            e.setFilters(filters);
3541        }
3542    }
3543
3544    /**
3545     * Returns the current list of input filters.
3546     */
3547    public InputFilter[] getFilters() {
3548        return mFilters;
3549    }
3550
3551    /////////////////////////////////////////////////////////////////////////
3552
3553    private int getVerticalOffset(boolean forceNormal) {
3554        int voffset = 0;
3555        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3556
3557        Layout l = mLayout;
3558        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3559            l = mHintLayout;
3560        }
3561
3562        if (gravity != Gravity.TOP) {
3563            int boxht;
3564
3565            if (l == mHintLayout) {
3566                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3567                        getCompoundPaddingBottom();
3568            } else {
3569                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3570                        getExtendedPaddingBottom();
3571            }
3572            int textht = l.getHeight();
3573
3574            if (textht < boxht) {
3575                if (gravity == Gravity.BOTTOM)
3576                    voffset = boxht - textht;
3577                else // (gravity == Gravity.CENTER_VERTICAL)
3578                    voffset = (boxht - textht) >> 1;
3579            }
3580        }
3581        return voffset;
3582    }
3583
3584    private int getBottomVerticalOffset(boolean forceNormal) {
3585        int voffset = 0;
3586        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3587
3588        Layout l = mLayout;
3589        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3590            l = mHintLayout;
3591        }
3592
3593        if (gravity != Gravity.BOTTOM) {
3594            int boxht;
3595
3596            if (l == mHintLayout) {
3597                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3598                        getCompoundPaddingBottom();
3599            } else {
3600                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3601                        getExtendedPaddingBottom();
3602            }
3603            int textht = l.getHeight();
3604
3605            if (textht < boxht) {
3606                if (gravity == Gravity.TOP)
3607                    voffset = boxht - textht;
3608                else // (gravity == Gravity.CENTER_VERTICAL)
3609                    voffset = (boxht - textht) >> 1;
3610            }
3611        }
3612        return voffset;
3613    }
3614
3615    private void invalidateCursorPath() {
3616        if (mHighlightPathBogus) {
3617            invalidateCursor();
3618        } else {
3619            synchronized (sTempRect) {
3620                /*
3621                 * The reason for this concern about the thickness of the
3622                 * cursor and doing the floor/ceil on the coordinates is that
3623                 * some EditTexts (notably textfields in the Browser) have
3624                 * anti-aliased text where not all the characters are
3625                 * necessarily at integer-multiple locations.  This should
3626                 * make sure the entire cursor gets invalidated instead of
3627                 * sometimes missing half a pixel.
3628                 */
3629
3630                float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
3631                if (thick < 1.0f) {
3632                    thick = 1.0f;
3633                }
3634
3635                thick /= 2;
3636
3637                mHighlightPath.computeBounds(sTempRect, false);
3638
3639                int left = getCompoundPaddingLeft();
3640                int top = getExtendedPaddingTop() + getVerticalOffset(true);
3641
3642                invalidate((int) FloatMath.floor(left + sTempRect.left - thick),
3643                           (int) FloatMath.floor(top + sTempRect.top - thick),
3644                           (int) FloatMath.ceil(left + sTempRect.right + thick),
3645                           (int) FloatMath.ceil(top + sTempRect.bottom + thick));
3646            }
3647        }
3648    }
3649
3650    private void invalidateCursor() {
3651        int where = getSelectionEnd();
3652
3653        invalidateCursor(where, where, where);
3654    }
3655
3656    private void invalidateCursor(int a, int b, int c) {
3657        if (mLayout == null) {
3658            invalidate();
3659        } else {
3660            if (a >= 0 || b >= 0 || c >= 0) {
3661                int first = Math.min(Math.min(a, b), c);
3662                int last = Math.max(Math.max(a, b), c);
3663
3664                int line = mLayout.getLineForOffset(first);
3665                int top = mLayout.getLineTop(line);
3666
3667                // This is ridiculous, but the descent from the line above
3668                // can hang down into the line we really want to redraw,
3669                // so we have to invalidate part of the line above to make
3670                // sure everything that needs to be redrawn really is.
3671                // (But not the whole line above, because that would cause
3672                // the same problem with the descenders on the line above it!)
3673                if (line > 0) {
3674                    top -= mLayout.getLineDescent(line - 1);
3675                }
3676
3677                int line2;
3678
3679                if (first == last)
3680                    line2 = line;
3681                else
3682                    line2 = mLayout.getLineForOffset(last);
3683
3684                int bottom = mLayout.getLineTop(line2 + 1);
3685                int voffset = getVerticalOffset(true);
3686
3687                int left = getCompoundPaddingLeft() + mScrollX;
3688                invalidate(left, top + voffset + getExtendedPaddingTop(),
3689                           left + getWidth() - getCompoundPaddingLeft() -
3690                           getCompoundPaddingRight(),
3691                           bottom + voffset + getExtendedPaddingTop());
3692            }
3693        }
3694    }
3695
3696    private void registerForPreDraw() {
3697        final ViewTreeObserver observer = getViewTreeObserver();
3698        if (observer == null) {
3699            return;
3700        }
3701
3702        if (mPreDrawState == PREDRAW_NOT_REGISTERED) {
3703            observer.addOnPreDrawListener(this);
3704            mPreDrawState = PREDRAW_PENDING;
3705        } else if (mPreDrawState == PREDRAW_DONE) {
3706            mPreDrawState = PREDRAW_PENDING;
3707        }
3708
3709        // else state is PREDRAW_PENDING, so keep waiting.
3710    }
3711
3712    /**
3713     * {@inheritDoc}
3714     */
3715    public boolean onPreDraw() {
3716        if (mPreDrawState != PREDRAW_PENDING) {
3717            return true;
3718        }
3719
3720        if (mLayout == null) {
3721            assumeLayout();
3722        }
3723
3724        boolean changed = false;
3725
3726        SelectionModifierCursorController selectionController = null;
3727        if (mSelectionModifierCursorController != null) {
3728            selectionController = (SelectionModifierCursorController)
3729                mSelectionModifierCursorController;
3730        }
3731
3732
3733        if (mMovement != null) {
3734            /* This code also provides auto-scrolling when a cursor is moved using a
3735             * CursorController (insertion point or selection limits).
3736             * For selection, ensure start or end is visible depending on controller's state.
3737             */
3738            int curs = getSelectionEnd();
3739            if (selectionController != null && selectionController.isSelectionStartDragged()) {
3740                curs = getSelectionStart();
3741            }
3742
3743            /*
3744             * TODO: This should really only keep the end in view if
3745             * it already was before the text changed.  I'm not sure
3746             * of a good way to tell from here if it was.
3747             */
3748            if (curs < 0 &&
3749                  (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
3750                curs = mText.length();
3751            }
3752
3753            if (curs >= 0) {
3754                changed = bringPointIntoView(curs);
3755            }
3756        } else {
3757            changed = bringTextIntoView();
3758        }
3759
3760        // This has to be checked here since:
3761        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
3762        //   a screen rotation) since layout is not yet initialized at that point.
3763        // - ExtractEditText does not call onFocus when it is displayed. Fixing this issue would
3764        //   allow to test for hasSelection in onFocusChanged, which would trigger a
3765        //   startTextSelectionMode here. TODO
3766        if (selectionController != null && hasSelection()) {
3767            startSelectionActionMode();
3768        }
3769
3770        mPreDrawState = PREDRAW_DONE;
3771        return !changed;
3772    }
3773
3774    @Override
3775    protected void onAttachedToWindow() {
3776        super.onAttachedToWindow();
3777
3778        mTemporaryDetach = false;
3779
3780        if (mShowErrorAfterAttach) {
3781            showError();
3782            mShowErrorAfterAttach = false;
3783        }
3784    }
3785
3786    @Override
3787    protected void onDetachedFromWindow() {
3788        super.onDetachedFromWindow();
3789
3790        if (mPreDrawState != PREDRAW_NOT_REGISTERED) {
3791            final ViewTreeObserver observer = getViewTreeObserver();
3792            if (observer != null) {
3793                observer.removeOnPreDrawListener(this);
3794                mPreDrawState = PREDRAW_NOT_REGISTERED;
3795            }
3796        }
3797
3798        if (mError != null) {
3799            hideError();
3800        }
3801    }
3802
3803    @Override
3804    protected boolean isPaddingOffsetRequired() {
3805        return mShadowRadius != 0 || mDrawables != null;
3806    }
3807
3808    @Override
3809    protected int getLeftPaddingOffset() {
3810        return getCompoundPaddingLeft() - mPaddingLeft +
3811                (int) Math.min(0, mShadowDx - mShadowRadius);
3812    }
3813
3814    @Override
3815    protected int getTopPaddingOffset() {
3816        return (int) Math.min(0, mShadowDy - mShadowRadius);
3817    }
3818
3819    @Override
3820    protected int getBottomPaddingOffset() {
3821        return (int) Math.max(0, mShadowDy + mShadowRadius);
3822    }
3823
3824    @Override
3825    protected int getRightPaddingOffset() {
3826        return -(getCompoundPaddingRight() - mPaddingRight) +
3827                (int) Math.max(0, mShadowDx + mShadowRadius);
3828    }
3829
3830    @Override
3831    protected boolean verifyDrawable(Drawable who) {
3832        final boolean verified = super.verifyDrawable(who);
3833        if (!verified && mDrawables != null) {
3834            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
3835                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom;
3836        }
3837        return verified;
3838    }
3839
3840    @Override
3841    public void invalidateDrawable(Drawable drawable) {
3842        if (verifyDrawable(drawable)) {
3843            final Rect dirty = drawable.getBounds();
3844            int scrollX = mScrollX;
3845            int scrollY = mScrollY;
3846
3847            // IMPORTANT: The coordinates below are based on the coordinates computed
3848            // for each compound drawable in onDraw(). Make sure to update each section
3849            // accordingly.
3850            final TextView.Drawables drawables = mDrawables;
3851            if (drawables != null) {
3852                if (drawable == drawables.mDrawableLeft) {
3853                    final int compoundPaddingTop = getCompoundPaddingTop();
3854                    final int compoundPaddingBottom = getCompoundPaddingBottom();
3855                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
3856
3857                    scrollX += mPaddingLeft;
3858                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
3859                } else if (drawable == drawables.mDrawableRight) {
3860                    final int compoundPaddingTop = getCompoundPaddingTop();
3861                    final int compoundPaddingBottom = getCompoundPaddingBottom();
3862                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
3863
3864                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
3865                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
3866                } else if (drawable == drawables.mDrawableTop) {
3867                    final int compoundPaddingLeft = getCompoundPaddingLeft();
3868                    final int compoundPaddingRight = getCompoundPaddingRight();
3869                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
3870
3871                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
3872                    scrollY += mPaddingTop;
3873                } else if (drawable == drawables.mDrawableBottom) {
3874                    final int compoundPaddingLeft = getCompoundPaddingLeft();
3875                    final int compoundPaddingRight = getCompoundPaddingRight();
3876                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
3877
3878                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
3879                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
3880                }
3881            }
3882
3883            invalidate(dirty.left + scrollX, dirty.top + scrollY,
3884                    dirty.right + scrollX, dirty.bottom + scrollY);
3885        }
3886    }
3887
3888    @Override
3889    protected boolean onSetAlpha(int alpha) {
3890        if (mMovement == null && getBackground() == null) {
3891            mCurrentAlpha = alpha;
3892            final Drawables dr = mDrawables;
3893            if (dr != null) {
3894                if (dr.mDrawableLeft != null) dr.mDrawableLeft.mutate().setAlpha(alpha);
3895                if (dr.mDrawableTop != null) dr.mDrawableTop.mutate().setAlpha(alpha);
3896                if (dr.mDrawableRight != null) dr.mDrawableRight.mutate().setAlpha(alpha);
3897                if (dr.mDrawableBottom != null) dr.mDrawableBottom.mutate().setAlpha(alpha);
3898            }
3899            return true;
3900        }
3901        return false;
3902    }
3903
3904    @Override
3905    protected void onDraw(Canvas canvas) {
3906        restartMarqueeIfNeeded();
3907
3908        // Draw the background for this view
3909        super.onDraw(canvas);
3910
3911        final int compoundPaddingLeft = getCompoundPaddingLeft();
3912        final int compoundPaddingTop = getCompoundPaddingTop();
3913        final int compoundPaddingRight = getCompoundPaddingRight();
3914        final int compoundPaddingBottom = getCompoundPaddingBottom();
3915        final int scrollX = mScrollX;
3916        final int scrollY = mScrollY;
3917        final int right = mRight;
3918        final int left = mLeft;
3919        final int bottom = mBottom;
3920        final int top = mTop;
3921
3922        final Drawables dr = mDrawables;
3923        if (dr != null) {
3924            /*
3925             * Compound, not extended, because the icon is not clipped
3926             * if the text height is smaller.
3927             */
3928
3929            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
3930            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
3931
3932            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3933            // Make sure to update invalidateDrawable() when changing this code.
3934            if (dr.mDrawableLeft != null) {
3935                canvas.save();
3936                canvas.translate(scrollX + mPaddingLeft,
3937                                 scrollY + compoundPaddingTop +
3938                                 (vspace - dr.mDrawableHeightLeft) / 2);
3939                dr.mDrawableLeft.draw(canvas);
3940                canvas.restore();
3941            }
3942
3943            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3944            // Make sure to update invalidateDrawable() when changing this code.
3945            if (dr.mDrawableRight != null) {
3946                canvas.save();
3947                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
3948                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
3949                dr.mDrawableRight.draw(canvas);
3950                canvas.restore();
3951            }
3952
3953            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3954            // Make sure to update invalidateDrawable() when changing this code.
3955            if (dr.mDrawableTop != null) {
3956                canvas.save();
3957                canvas.translate(scrollX + compoundPaddingLeft + (hspace - dr.mDrawableWidthTop) / 2,
3958                        scrollY + mPaddingTop);
3959                dr.mDrawableTop.draw(canvas);
3960                canvas.restore();
3961            }
3962
3963            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3964            // Make sure to update invalidateDrawable() when changing this code.
3965            if (dr.mDrawableBottom != null) {
3966                canvas.save();
3967                canvas.translate(scrollX + compoundPaddingLeft +
3968                        (hspace - dr.mDrawableWidthBottom) / 2,
3969                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
3970                dr.mDrawableBottom.draw(canvas);
3971                canvas.restore();
3972            }
3973        }
3974
3975        if (mPreDrawState == PREDRAW_DONE) {
3976            final ViewTreeObserver observer = getViewTreeObserver();
3977            if (observer != null) {
3978                observer.removeOnPreDrawListener(this);
3979                mPreDrawState = PREDRAW_NOT_REGISTERED;
3980            }
3981        }
3982
3983        int color = mCurTextColor;
3984
3985        if (mLayout == null) {
3986            assumeLayout();
3987        }
3988
3989        Layout layout = mLayout;
3990        int cursorcolor = color;
3991
3992        if (mHint != null && mText.length() == 0) {
3993            if (mHintTextColor != null) {
3994                color = mCurHintTextColor;
3995            }
3996
3997            layout = mHintLayout;
3998        }
3999
4000        mTextPaint.setColor(color);
4001        mTextPaint.setAlpha(mCurrentAlpha);
4002        mTextPaint.drawableState = getDrawableState();
4003
4004        canvas.save();
4005        /*  Would be faster if we didn't have to do this. Can we chop the
4006            (displayable) text so that we don't need to do this ever?
4007        */
4008
4009        int extendedPaddingTop = getExtendedPaddingTop();
4010        int extendedPaddingBottom = getExtendedPaddingBottom();
4011
4012        float clipLeft = compoundPaddingLeft + scrollX;
4013        float clipTop = extendedPaddingTop + scrollY;
4014        float clipRight = right - left - compoundPaddingRight + scrollX;
4015        float clipBottom = bottom - top - extendedPaddingBottom + scrollY;
4016
4017        if (mShadowRadius != 0) {
4018            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
4019            clipRight += Math.max(0, mShadowDx + mShadowRadius);
4020
4021            clipTop += Math.min(0, mShadowDy - mShadowRadius);
4022            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
4023        }
4024
4025        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
4026
4027        int voffsetText = 0;
4028        int voffsetCursor = 0;
4029
4030        // translate in by our padding
4031        {
4032            /* shortcircuit calling getVerticaOffset() */
4033            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4034                voffsetText = getVerticalOffset(false);
4035                voffsetCursor = getVerticalOffset(true);
4036            }
4037            canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
4038        }
4039
4040        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4041            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
4042                    (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
4043                canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft -
4044                        getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f);
4045            }
4046
4047            if (mMarquee != null && mMarquee.isRunning()) {
4048                canvas.translate(-mMarquee.mScroll, 0.0f);
4049            }
4050        }
4051
4052        Path highlight = null;
4053        int selStart = -1, selEnd = -1;
4054
4055        //  If there is no movement method, then there can be no selection.
4056        //  Check that first and attempt to skip everything having to do with
4057        //  the cursor.
4058        //  XXX This is not strictly true -- a program could set the
4059        //  selection manually if it really wanted to.
4060        if (mMovement != null && (isFocused() || isPressed())) {
4061            selStart = getSelectionStart();
4062            selEnd = getSelectionEnd();
4063
4064            if (mCursorVisible && selStart >= 0 && isEnabled()) {
4065                if (mHighlightPath == null)
4066                    mHighlightPath = new Path();
4067
4068                if (selStart == selEnd) {
4069                    if ((SystemClock.uptimeMillis() - mShowCursor) % (2 * BLINK) < BLINK) {
4070                        if (mHighlightPathBogus) {
4071                            mHighlightPath.reset();
4072                            mLayout.getCursorPath(selStart, mHighlightPath, mText);
4073                            mHighlightPathBogus = false;
4074                        }
4075
4076                        // XXX should pass to skin instead of drawing directly
4077                        mHighlightPaint.setColor(cursorcolor);
4078                        mHighlightPaint.setStyle(Paint.Style.STROKE);
4079
4080                        highlight = mHighlightPath;
4081                    }
4082                } else {
4083                    if (mHighlightPathBogus) {
4084                        mHighlightPath.reset();
4085                        mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4086                        mHighlightPathBogus = false;
4087                    }
4088
4089                    // XXX should pass to skin instead of drawing directly
4090                    mHighlightPaint.setColor(mHighlightColor);
4091                    mHighlightPaint.setStyle(Paint.Style.FILL);
4092
4093                    highlight = mHighlightPath;
4094                }
4095            }
4096        }
4097
4098        /*  Comment out until we decide what to do about animations
4099        boolean isLinearTextOn = false;
4100        if (currentTransformation != null) {
4101            isLinearTextOn = mTextPaint.isLinearTextOn();
4102            Matrix m = currentTransformation.getMatrix();
4103            if (!m.isIdentity()) {
4104                // mTextPaint.setLinearTextOn(true);
4105            }
4106        }
4107        */
4108
4109        final InputMethodState ims = mInputMethodState;
4110        if (ims != null && ims.mBatchEditNesting == 0) {
4111            InputMethodManager imm = InputMethodManager.peekInstance();
4112            if (imm != null) {
4113                if (imm.isActive(this)) {
4114                    boolean reported = false;
4115                    if (ims.mContentChanged || ims.mSelectionModeChanged) {
4116                        // We are in extract mode and the content has changed
4117                        // in some way... just report complete new text to the
4118                        // input method.
4119                        reported = reportExtractedText();
4120                    }
4121                    if (!reported && highlight != null) {
4122                        int candStart = -1;
4123                        int candEnd = -1;
4124                        if (mText instanceof Spannable) {
4125                            Spannable sp = (Spannable)mText;
4126                            candStart = EditableInputConnection.getComposingSpanStart(sp);
4127                            candEnd = EditableInputConnection.getComposingSpanEnd(sp);
4128                        }
4129                        imm.updateSelection(this, selStart, selEnd, candStart, candEnd);
4130                    }
4131                }
4132
4133                if (imm.isWatchingCursor(this) && highlight != null) {
4134                    highlight.computeBounds(ims.mTmpRectF, true);
4135                    ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0;
4136
4137                    canvas.getMatrix().mapPoints(ims.mTmpOffset);
4138                    ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]);
4139
4140                    ims.mTmpRectF.offset(0, voffsetCursor - voffsetText);
4141
4142                    ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5),
4143                            (int)(ims.mTmpRectF.top + 0.5),
4144                            (int)(ims.mTmpRectF.right + 0.5),
4145                            (int)(ims.mTmpRectF.bottom + 0.5));
4146
4147                    imm.updateCursor(this,
4148                            ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top,
4149                            ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom);
4150                }
4151            }
4152        }
4153
4154        layout.draw(canvas, highlight, mHighlightPaint, voffsetCursor - voffsetText);
4155
4156        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
4157            canvas.translate((int) mMarquee.getGhostOffset(), 0.0f);
4158            layout.draw(canvas, highlight, mHighlightPaint, voffsetCursor - voffsetText);
4159        }
4160
4161        /*  Comment out until we decide what to do about animations
4162        if (currentTransformation != null) {
4163            mTextPaint.setLinearTextOn(isLinearTextOn);
4164        }
4165        */
4166
4167        canvas.restore();
4168    }
4169
4170    @Override
4171    public void getFocusedRect(Rect r) {
4172        if (mLayout == null) {
4173            super.getFocusedRect(r);
4174            return;
4175        }
4176
4177        int sel = getSelectionEnd();
4178        if (sel < 0) {
4179            super.getFocusedRect(r);
4180            return;
4181        }
4182
4183        int line = mLayout.getLineForOffset(sel);
4184        r.top = mLayout.getLineTop(line);
4185        r.bottom = mLayout.getLineBottom(line);
4186
4187        r.left = (int) mLayout.getPrimaryHorizontal(sel);
4188        r.right = r.left + 1;
4189
4190        // Adjust for padding and gravity.
4191        int paddingLeft = getCompoundPaddingLeft();
4192        int paddingTop = getExtendedPaddingTop();
4193        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4194            paddingTop += getVerticalOffset(false);
4195        }
4196        r.offset(paddingLeft, paddingTop);
4197    }
4198
4199    /**
4200     * Return the number of lines of text, or 0 if the internal Layout has not
4201     * been built.
4202     */
4203    public int getLineCount() {
4204        return mLayout != null ? mLayout.getLineCount() : 0;
4205    }
4206
4207    /**
4208     * Return the baseline for the specified line (0...getLineCount() - 1)
4209     * If bounds is not null, return the top, left, right, bottom extents
4210     * of the specified line in it. If the internal Layout has not been built,
4211     * return 0 and set bounds to (0, 0, 0, 0)
4212     * @param line which line to examine (0..getLineCount() - 1)
4213     * @param bounds Optional. If not null, it returns the extent of the line
4214     * @return the Y-coordinate of the baseline
4215     */
4216    public int getLineBounds(int line, Rect bounds) {
4217        if (mLayout == null) {
4218            if (bounds != null) {
4219                bounds.set(0, 0, 0, 0);
4220            }
4221            return 0;
4222        }
4223        else {
4224            int baseline = mLayout.getLineBounds(line, bounds);
4225
4226            int voffset = getExtendedPaddingTop();
4227            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4228                voffset += getVerticalOffset(true);
4229            }
4230            if (bounds != null) {
4231                bounds.offset(getCompoundPaddingLeft(), voffset);
4232            }
4233            return baseline + voffset;
4234        }
4235    }
4236
4237    @Override
4238    public int getBaseline() {
4239        if (mLayout == null) {
4240            return super.getBaseline();
4241        }
4242
4243        int voffset = 0;
4244        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4245            voffset = getVerticalOffset(true);
4246        }
4247
4248        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
4249    }
4250
4251    @Override
4252    public boolean onKeyDown(int keyCode, KeyEvent event) {
4253        int which = doKeyDown(keyCode, event, null);
4254        if (which == 0) {
4255            // Go through default dispatching.
4256            return super.onKeyDown(keyCode, event);
4257        }
4258
4259        return true;
4260    }
4261
4262    @Override
4263    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
4264        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
4265
4266        int which = doKeyDown(keyCode, down, event);
4267        if (which == 0) {
4268            // Go through default dispatching.
4269            return super.onKeyMultiple(keyCode, repeatCount, event);
4270        }
4271        if (which == -1) {
4272            // Consumed the whole thing.
4273            return true;
4274        }
4275
4276        repeatCount--;
4277
4278        // We are going to dispatch the remaining events to either the input
4279        // or movement method.  To do this, we will just send a repeated stream
4280        // of down and up events until we have done the complete repeatCount.
4281        // It would be nice if those interfaces had an onKeyMultiple() method,
4282        // but adding that is a more complicated change.
4283        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
4284        if (which == 1) {
4285            mInput.onKeyUp(this, (Editable)mText, keyCode, up);
4286            while (--repeatCount > 0) {
4287                mInput.onKeyDown(this, (Editable)mText, keyCode, down);
4288                mInput.onKeyUp(this, (Editable)mText, keyCode, up);
4289            }
4290            if (mError != null && !mErrorWasChanged) {
4291                setError(null, null);
4292            }
4293
4294        } else if (which == 2) {
4295            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4296            while (--repeatCount > 0) {
4297                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
4298                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4299            }
4300        }
4301
4302        return true;
4303    }
4304
4305    /**
4306     * Returns true if pressing ENTER in this field advances focus instead
4307     * of inserting the character.  This is true mostly in single-line fields,
4308     * but also in mail addresses and subjects which will display on multiple
4309     * lines but where it doesn't make sense to insert newlines.
4310     */
4311    private boolean shouldAdvanceFocusOnEnter() {
4312        if (mInput == null) {
4313            return false;
4314        }
4315
4316        if (mSingleLine) {
4317            return true;
4318        }
4319
4320        if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
4321            int variation = mInputType & EditorInfo.TYPE_MASK_VARIATION;
4322
4323            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS ||
4324                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
4325                return true;
4326            }
4327        }
4328
4329        return false;
4330    }
4331
4332    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
4333        if (!isEnabled()) {
4334            return 0;
4335        }
4336
4337        switch (keyCode) {
4338            case KeyEvent.KEYCODE_ENTER:
4339                // If ALT modifier is held, then we always insert a
4340                // newline character.
4341                if ((event.getMetaState()&KeyEvent.META_ALT_ON) == 0) {
4342
4343                    // When mInputContentType is set, we know that we are
4344                    // running in a "modern" cupcake environment, so don't need
4345                    // to worry about the application trying to capture
4346                    // enter key events.
4347                    if (mInputContentType != null) {
4348
4349                        // If there is an action listener, given them a
4350                        // chance to consume the event.
4351                        if (mInputContentType.onEditorActionListener != null &&
4352                                mInputContentType.onEditorActionListener.onEditorAction(
4353                                this, EditorInfo.IME_NULL, event)) {
4354                            mInputContentType.enterDown = true;
4355                            // We are consuming the enter key for them.
4356                            return -1;
4357                        }
4358                    }
4359
4360                    // If our editor should move focus when enter is pressed, or
4361                    // this is a generated event from an IME action button, then
4362                    // don't let it be inserted into the text.
4363                    if ((event.getFlags()&KeyEvent.FLAG_EDITOR_ACTION) != 0
4364                            || shouldAdvanceFocusOnEnter()) {
4365                        return -1;
4366                    }
4367                }
4368                break;
4369
4370            case KeyEvent.KEYCODE_DPAD_CENTER:
4371                if (shouldAdvanceFocusOnEnter()) {
4372                    return 0;
4373                }
4374                break;
4375
4376                // Has to be done on key down (and not on key up) to correctly be intercepted.
4377            case KeyEvent.KEYCODE_BACK:
4378                if (mSelectionActionMode != null) {
4379                    stopSelectionActionMode();
4380                    return -1;
4381                }
4382                break;
4383        }
4384
4385        if (mInput != null) {
4386            /*
4387             * Keep track of what the error was before doing the input
4388             * so that if an input filter changed the error, we leave
4389             * that error showing.  Otherwise, we take down whatever
4390             * error was showing when the user types something.
4391             */
4392            mErrorWasChanged = false;
4393
4394            boolean doDown = true;
4395            if (otherEvent != null) {
4396                try {
4397                    beginBatchEdit();
4398                    boolean handled = mInput.onKeyOther(this, (Editable) mText,
4399                            otherEvent);
4400                    if (mError != null && !mErrorWasChanged) {
4401                        setError(null, null);
4402                    }
4403                    doDown = false;
4404                    if (handled) {
4405                        return -1;
4406                    }
4407                } catch (AbstractMethodError e) {
4408                    // onKeyOther was added after 1.0, so if it isn't
4409                    // implemented we need to try to dispatch as a regular down.
4410                } finally {
4411                    endBatchEdit();
4412                }
4413            }
4414
4415            if (doDown) {
4416                beginBatchEdit();
4417                if (mInput.onKeyDown(this, (Editable) mText, keyCode, event)) {
4418                    endBatchEdit();
4419                    if (mError != null && !mErrorWasChanged) {
4420                        setError(null, null);
4421                    }
4422                    return 1;
4423                }
4424                endBatchEdit();
4425            }
4426        }
4427
4428        // bug 650865: sometimes we get a key event before a layout.
4429        // don't try to move around if we don't know the layout.
4430
4431        if (mMovement != null && mLayout != null) {
4432            boolean doDown = true;
4433            if (otherEvent != null) {
4434                try {
4435                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
4436                            otherEvent);
4437                    doDown = false;
4438                    if (handled) {
4439                        return -1;
4440                    }
4441                } catch (AbstractMethodError e) {
4442                    // onKeyOther was added after 1.0, so if it isn't
4443                    // implemented we need to try to dispatch as a regular down.
4444                }
4445            }
4446            if (doDown) {
4447                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
4448                    return 2;
4449            }
4450        }
4451
4452        return 0;
4453    }
4454
4455    @Override
4456    public boolean onKeyUp(int keyCode, KeyEvent event) {
4457        if (!isEnabled()) {
4458            return super.onKeyUp(keyCode, event);
4459        }
4460
4461        hideControllers();
4462
4463        switch (keyCode) {
4464            case KeyEvent.KEYCODE_DPAD_CENTER:
4465                /*
4466                 * If there is a click listener, just call through to
4467                 * super, which will invoke it.
4468                 *
4469                 * If there isn't a click listener, try to show the soft
4470                 * input method.  (It will also
4471                 * call performClick(), but that won't do anything in
4472                 * this case.)
4473                 */
4474                if (mOnClickListener == null) {
4475                    if (mMovement != null && mText instanceof Editable
4476                            && mLayout != null && onCheckIsTextEditor()) {
4477                        InputMethodManager imm = (InputMethodManager)
4478                                getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
4479                        imm.showSoftInput(this, 0);
4480                    }
4481                }
4482                return super.onKeyUp(keyCode, event);
4483
4484            case KeyEvent.KEYCODE_ENTER:
4485                if (mInputContentType != null
4486                        && mInputContentType.onEditorActionListener != null
4487                        && mInputContentType.enterDown) {
4488                    mInputContentType.enterDown = false;
4489                    if (mInputContentType.onEditorActionListener.onEditorAction(
4490                            this, EditorInfo.IME_NULL, event)) {
4491                        return true;
4492                    }
4493                }
4494
4495                if ((event.getFlags()&KeyEvent.FLAG_EDITOR_ACTION) != 0
4496                        || shouldAdvanceFocusOnEnter()) {
4497                    /*
4498                     * If there is a click listener, just call through to
4499                     * super, which will invoke it.
4500                     *
4501                     * If there isn't a click listener, try to advance focus,
4502                     * but still call through to super, which will reset the
4503                     * pressed state and longpress state.  (It will also
4504                     * call performClick(), but that won't do anything in
4505                     * this case.)
4506                     */
4507                    if (mOnClickListener == null) {
4508                        View v = focusSearch(FOCUS_DOWN);
4509
4510                        if (v != null) {
4511                            if (!v.requestFocus(FOCUS_DOWN)) {
4512                                throw new IllegalStateException("focus search returned a view " +
4513                                        "that wasn't able to take focus!");
4514                            }
4515
4516                            /*
4517                             * Return true because we handled the key; super
4518                             * will return false because there was no click
4519                             * listener.
4520                             */
4521                            super.onKeyUp(keyCode, event);
4522                            return true;
4523                        } else if ((event.getFlags()
4524                                & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
4525                            // No target for next focus, but make sure the IME
4526                            // if this came from it.
4527                            InputMethodManager imm = InputMethodManager.peekInstance();
4528                            if (imm != null) {
4529                                imm.hideSoftInputFromWindow(getWindowToken(), 0);
4530                            }
4531                        }
4532                    }
4533
4534                    return super.onKeyUp(keyCode, event);
4535                }
4536                break;
4537        }
4538
4539        if (mInput != null)
4540            if (mInput.onKeyUp(this, (Editable) mText, keyCode, event))
4541                return true;
4542
4543        if (mMovement != null && mLayout != null)
4544            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
4545                return true;
4546
4547        return super.onKeyUp(keyCode, event);
4548    }
4549
4550    @Override public boolean onCheckIsTextEditor() {
4551        return mInputType != EditorInfo.TYPE_NULL;
4552    }
4553
4554    @Override public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
4555        if (onCheckIsTextEditor()) {
4556            if (mInputMethodState == null) {
4557                mInputMethodState = new InputMethodState();
4558            }
4559            outAttrs.inputType = mInputType;
4560            if (mInputContentType != null) {
4561                outAttrs.imeOptions = mInputContentType.imeOptions;
4562                outAttrs.privateImeOptions = mInputContentType.privateImeOptions;
4563                outAttrs.actionLabel = mInputContentType.imeActionLabel;
4564                outAttrs.actionId = mInputContentType.imeActionId;
4565                outAttrs.extras = mInputContentType.extras;
4566            } else {
4567                outAttrs.imeOptions = EditorInfo.IME_NULL;
4568            }
4569            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
4570                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
4571                if (focusSearch(FOCUS_DOWN) != null) {
4572                    // An action has not been set, but the enter key will move to
4573                    // the next focus, so set the action to that.
4574                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
4575                } else {
4576                    // An action has not been set, and there is no focus to move
4577                    // to, so let's just supply a "done" action.
4578                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
4579                }
4580                if (!shouldAdvanceFocusOnEnter()) {
4581                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
4582                }
4583            }
4584            if ((outAttrs.inputType & (InputType.TYPE_MASK_CLASS
4585                    | InputType.TYPE_TEXT_FLAG_MULTI_LINE))
4586                    == (InputType.TYPE_CLASS_TEXT
4587                            | InputType.TYPE_TEXT_FLAG_MULTI_LINE)) {
4588                // Multi-line text editors should always show an enter key.
4589                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
4590            }
4591            outAttrs.hintText = mHint;
4592            if (mText instanceof Editable) {
4593                InputConnection ic = new EditableInputConnection(this);
4594                outAttrs.initialSelStart = getSelectionStart();
4595                outAttrs.initialSelEnd = getSelectionEnd();
4596                outAttrs.initialCapsMode = ic.getCursorCapsMode(mInputType);
4597                return ic;
4598            }
4599        }
4600        return null;
4601    }
4602
4603    /**
4604     * If this TextView contains editable content, extract a portion of it
4605     * based on the information in <var>request</var> in to <var>outText</var>.
4606     * @return Returns true if the text was successfully extracted, else false.
4607     */
4608    public boolean extractText(ExtractedTextRequest request,
4609            ExtractedText outText) {
4610        return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN,
4611                EXTRACT_UNKNOWN, outText);
4612    }
4613
4614    static final int EXTRACT_NOTHING = -2;
4615    static final int EXTRACT_UNKNOWN = -1;
4616
4617    boolean extractTextInternal(ExtractedTextRequest request,
4618            int partialStartOffset, int partialEndOffset, int delta,
4619            ExtractedText outText) {
4620        final CharSequence content = mText;
4621        if (content != null) {
4622            if (partialStartOffset != EXTRACT_NOTHING) {
4623                final int N = content.length();
4624                if (partialStartOffset < 0) {
4625                    outText.partialStartOffset = outText.partialEndOffset = -1;
4626                    partialStartOffset = 0;
4627                    partialEndOffset = N;
4628                } else {
4629                    // Now use the delta to determine the actual amount of text
4630                    // we need.
4631                    partialEndOffset += delta;
4632                    // Adjust offsets to ensure we contain full spans.
4633                    if (content instanceof Spanned) {
4634                        Spanned spanned = (Spanned)content;
4635                        Object[] spans = spanned.getSpans(partialStartOffset,
4636                                partialEndOffset, ParcelableSpan.class);
4637                        int i = spans.length;
4638                        while (i > 0) {
4639                            i--;
4640                            int j = spanned.getSpanStart(spans[i]);
4641                            if (j < partialStartOffset) partialStartOffset = j;
4642                            j = spanned.getSpanEnd(spans[i]);
4643                            if (j > partialEndOffset) partialEndOffset = j;
4644                        }
4645                    }
4646                    outText.partialStartOffset = partialStartOffset;
4647                    outText.partialEndOffset = partialEndOffset - delta;
4648
4649                    if (partialStartOffset > N) {
4650                        partialStartOffset = N;
4651                    } else if (partialStartOffset < 0) {
4652                        partialStartOffset = 0;
4653                    }
4654                    if (partialEndOffset > N) {
4655                        partialEndOffset = N;
4656                    } else if (partialEndOffset < 0) {
4657                        partialEndOffset = 0;
4658                    }
4659                }
4660                if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) {
4661                    outText.text = content.subSequence(partialStartOffset,
4662                            partialEndOffset);
4663                } else {
4664                    outText.text = TextUtils.substring(content, partialStartOffset,
4665                            partialEndOffset);
4666                }
4667            } else {
4668                outText.partialStartOffset = 0;
4669                outText.partialEndOffset = 0;
4670                outText.text = "";
4671            }
4672            outText.flags = 0;
4673            if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) {
4674                outText.flags |= ExtractedText.FLAG_SELECTING;
4675            }
4676            if (mSingleLine) {
4677                outText.flags |= ExtractedText.FLAG_SINGLE_LINE;
4678            }
4679            outText.startOffset = 0;
4680            outText.selectionStart = getSelectionStart();
4681            outText.selectionEnd = getSelectionEnd();
4682            return true;
4683        }
4684        return false;
4685    }
4686
4687    boolean reportExtractedText() {
4688        final InputMethodState ims = mInputMethodState;
4689        if (ims != null) {
4690            final boolean contentChanged = ims.mContentChanged;
4691            if (contentChanged || ims.mSelectionModeChanged) {
4692                ims.mContentChanged = false;
4693                ims.mSelectionModeChanged = false;
4694                final ExtractedTextRequest req = mInputMethodState.mExtracting;
4695                if (req != null) {
4696                    InputMethodManager imm = InputMethodManager.peekInstance();
4697                    if (imm != null) {
4698                        if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Retrieving extracted start="
4699                                + ims.mChangedStart + " end=" + ims.mChangedEnd
4700                                + " delta=" + ims.mChangedDelta);
4701                        if (ims.mChangedStart < 0 && !contentChanged) {
4702                            ims.mChangedStart = EXTRACT_NOTHING;
4703                        }
4704                        if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd,
4705                                ims.mChangedDelta, ims.mTmpExtracted)) {
4706                            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Reporting extracted start="
4707                                    + ims.mTmpExtracted.partialStartOffset
4708                                    + " end=" + ims.mTmpExtracted.partialEndOffset
4709                                    + ": " + ims.mTmpExtracted.text);
4710                            imm.updateExtractedText(this, req.token,
4711                                    mInputMethodState.mTmpExtracted);
4712                            ims.mChangedStart = EXTRACT_UNKNOWN;
4713                            ims.mChangedEnd = EXTRACT_UNKNOWN;
4714                            ims.mChangedDelta = 0;
4715                            ims.mContentChanged = false;
4716                            return true;
4717                        }
4718                    }
4719                }
4720            }
4721        }
4722        return false;
4723    }
4724
4725    /**
4726     * This is used to remove all style-impacting spans from text before new
4727     * extracted text is being replaced into it, so that we don't have any
4728     * lingering spans applied during the replace.
4729     */
4730    static void removeParcelableSpans(Spannable spannable, int start, int end) {
4731        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
4732        int i = spans.length;
4733        while (i > 0) {
4734            i--;
4735            spannable.removeSpan(spans[i]);
4736        }
4737    }
4738
4739    /**
4740     * Apply to this text view the given extracted text, as previously
4741     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
4742     */
4743    public void setExtractedText(ExtractedText text) {
4744        Editable content = getEditableText();
4745        if (text.text != null) {
4746            if (content == null) {
4747                setText(text.text, TextView.BufferType.EDITABLE);
4748            } else if (text.partialStartOffset < 0) {
4749                removeParcelableSpans(content, 0, content.length());
4750                content.replace(0, content.length(), text.text);
4751            } else {
4752                final int N = content.length();
4753                int start = text.partialStartOffset;
4754                if (start > N) start = N;
4755                int end = text.partialEndOffset;
4756                if (end > N) end = N;
4757                removeParcelableSpans(content, start, end);
4758                content.replace(start, end, text.text);
4759            }
4760        }
4761
4762        // Now set the selection position...  make sure it is in range, to
4763        // avoid crashes.  If this is a partial update, it is possible that
4764        // the underlying text may have changed, causing us problems here.
4765        // Also we just don't want to trust clients to do the right thing.
4766        Spannable sp = (Spannable)getText();
4767        final int N = sp.length();
4768        int start = text.selectionStart;
4769        if (start < 0) start = 0;
4770        else if (start > N) start = N;
4771        int end = text.selectionEnd;
4772        if (end < 0) end = 0;
4773        else if (end > N) end = N;
4774        Selection.setSelection(sp, start, end);
4775
4776        // Finally, update the selection mode.
4777        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
4778            MetaKeyKeyListener.startSelecting(this, sp);
4779        } else {
4780            MetaKeyKeyListener.stopSelecting(this, sp);
4781        }
4782    }
4783
4784    /**
4785     * @hide
4786     */
4787    public void setExtracting(ExtractedTextRequest req) {
4788        if (mInputMethodState != null) {
4789            mInputMethodState.mExtracting = req;
4790        }
4791    }
4792
4793    /**
4794     * Called by the framework in response to a text completion from
4795     * the current input method, provided by it calling
4796     * {@link InputConnection#commitCompletion
4797     * InputConnection.commitCompletion()}.  The default implementation does
4798     * nothing; text views that are supporting auto-completion should override
4799     * this to do their desired behavior.
4800     *
4801     * @param text The auto complete text the user has selected.
4802     */
4803    public void onCommitCompletion(CompletionInfo text) {
4804    }
4805
4806    public void beginBatchEdit() {
4807        final InputMethodState ims = mInputMethodState;
4808        if (ims != null) {
4809            int nesting = ++ims.mBatchEditNesting;
4810            if (nesting == 1) {
4811                ims.mCursorChanged = false;
4812                ims.mChangedDelta = 0;
4813                if (ims.mContentChanged) {
4814                    // We already have a pending change from somewhere else,
4815                    // so turn this into a full update.
4816                    ims.mChangedStart = 0;
4817                    ims.mChangedEnd = mText.length();
4818                } else {
4819                    ims.mChangedStart = EXTRACT_UNKNOWN;
4820                    ims.mChangedEnd = EXTRACT_UNKNOWN;
4821                    ims.mContentChanged = false;
4822                }
4823                onBeginBatchEdit();
4824            }
4825        }
4826    }
4827
4828    public void endBatchEdit() {
4829        final InputMethodState ims = mInputMethodState;
4830        if (ims != null) {
4831            int nesting = --ims.mBatchEditNesting;
4832            if (nesting == 0) {
4833                finishBatchEdit(ims);
4834            }
4835        }
4836    }
4837
4838    void ensureEndedBatchEdit() {
4839        final InputMethodState ims = mInputMethodState;
4840        if (ims != null && ims.mBatchEditNesting != 0) {
4841            ims.mBatchEditNesting = 0;
4842            finishBatchEdit(ims);
4843        }
4844    }
4845
4846    void finishBatchEdit(final InputMethodState ims) {
4847        onEndBatchEdit();
4848
4849        if (ims.mContentChanged || ims.mSelectionModeChanged) {
4850            updateAfterEdit();
4851            reportExtractedText();
4852        } else if (ims.mCursorChanged) {
4853            // Cheezy way to get us to report the current cursor location.
4854            invalidateCursor();
4855        }
4856    }
4857
4858    void updateAfterEdit() {
4859        invalidate();
4860        int curs = getSelectionStart();
4861
4862        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) ==
4863                             Gravity.BOTTOM) {
4864            registerForPreDraw();
4865        }
4866
4867        if (curs >= 0) {
4868            mHighlightPathBogus = true;
4869
4870            if (isFocused()) {
4871                mShowCursor = SystemClock.uptimeMillis();
4872                makeBlink();
4873            }
4874        }
4875
4876        checkForResize();
4877    }
4878
4879    /**
4880     * Called by the framework in response to a request to begin a batch
4881     * of edit operations through a call to link {@link #beginBatchEdit()}.
4882     */
4883    public void onBeginBatchEdit() {
4884    }
4885
4886    /**
4887     * Called by the framework in response to a request to end a batch
4888     * of edit operations through a call to link {@link #endBatchEdit}.
4889     */
4890    public void onEndBatchEdit() {
4891    }
4892
4893    /**
4894     * Called by the framework in response to a private command from the
4895     * current method, provided by it calling
4896     * {@link InputConnection#performPrivateCommand
4897     * InputConnection.performPrivateCommand()}.
4898     *
4899     * @param action The action name of the command.
4900     * @param data Any additional data for the command.  This may be null.
4901     * @return Return true if you handled the command, else false.
4902     */
4903    public boolean onPrivateIMECommand(String action, Bundle data) {
4904        return false;
4905    }
4906
4907    private void nullLayouts() {
4908        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
4909            mSavedLayout = (BoringLayout) mLayout;
4910        }
4911        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
4912            mSavedHintLayout = (BoringLayout) mHintLayout;
4913        }
4914
4915        mLayout = mHintLayout = null;
4916    }
4917
4918    /**
4919     * Make a new Layout based on the already-measured size of the view,
4920     * on the assumption that it was measured correctly at some point.
4921     */
4922    private void assumeLayout() {
4923        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
4924
4925        if (width < 1) {
4926            width = 0;
4927        }
4928
4929        int physicalWidth = width;
4930
4931        if (mHorizontallyScrolling) {
4932            width = VERY_WIDE;
4933        }
4934
4935        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
4936                      physicalWidth, false);
4937    }
4938
4939    /**
4940     * The width passed in is now the desired layout width,
4941     * not the full view width with padding.
4942     * {@hide}
4943     */
4944    protected void makeNewLayout(int w, int hintWidth,
4945                                 BoringLayout.Metrics boring,
4946                                 BoringLayout.Metrics hintBoring,
4947                                 int ellipsisWidth, boolean bringIntoView) {
4948        stopMarquee();
4949
4950        mHighlightPathBogus = true;
4951
4952        if (w < 0) {
4953            w = 0;
4954        }
4955        if (hintWidth < 0) {
4956            hintWidth = 0;
4957        }
4958
4959        Layout.Alignment alignment;
4960        switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
4961            case Gravity.CENTER_HORIZONTAL:
4962                alignment = Layout.Alignment.ALIGN_CENTER;
4963                break;
4964
4965            case Gravity.RIGHT:
4966                // Note, Layout resolves ALIGN_OPPOSITE to left or
4967                // right based on the paragraph direction.
4968                alignment = Layout.Alignment.ALIGN_OPPOSITE;
4969                break;
4970
4971            default:
4972                alignment = Layout.Alignment.ALIGN_NORMAL;
4973        }
4974
4975        boolean shouldEllipsize = mEllipsize != null && mInput == null;
4976
4977        if (mText instanceof Spannable) {
4978            mLayout = new DynamicLayout(mText, mTransformed, mTextPaint, w,
4979                    alignment, mSpacingMult,
4980                    mSpacingAdd, mIncludePad, mInput == null ? mEllipsize : null,
4981                    ellipsisWidth);
4982        } else {
4983            if (boring == UNKNOWN_BORING) {
4984                boring = BoringLayout.isBoring(mTransformed, mTextPaint,
4985                                               mBoring);
4986                if (boring != null) {
4987                    mBoring = boring;
4988                }
4989            }
4990
4991            if (boring != null) {
4992                if (boring.width <= w &&
4993                    (mEllipsize == null || boring.width <= ellipsisWidth)) {
4994                    if (mSavedLayout != null) {
4995                        mLayout = mSavedLayout.
4996                                replaceOrMake(mTransformed, mTextPaint,
4997                                w, alignment, mSpacingMult, mSpacingAdd,
4998                                boring, mIncludePad);
4999                    } else {
5000                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
5001                                w, alignment, mSpacingMult, mSpacingAdd,
5002                                boring, mIncludePad);
5003                    }
5004
5005                    mSavedLayout = (BoringLayout) mLayout;
5006                } else if (shouldEllipsize && boring.width <= w) {
5007                    if (mSavedLayout != null) {
5008                        mLayout = mSavedLayout.
5009                                replaceOrMake(mTransformed, mTextPaint,
5010                                w, alignment, mSpacingMult, mSpacingAdd,
5011                                boring, mIncludePad, mEllipsize,
5012                                ellipsisWidth);
5013                    } else {
5014                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
5015                                w, alignment, mSpacingMult, mSpacingAdd,
5016                                boring, mIncludePad, mEllipsize,
5017                                ellipsisWidth);
5018                    }
5019                } else if (shouldEllipsize) {
5020                    mLayout = new StaticLayout(mTransformed,
5021                                0, mTransformed.length(),
5022                                mTextPaint, w, alignment, mSpacingMult,
5023                                mSpacingAdd, mIncludePad, mEllipsize,
5024                                ellipsisWidth);
5025                } else {
5026                    mLayout = new StaticLayout(mTransformed, mTextPaint,
5027                            w, alignment, mSpacingMult, mSpacingAdd,
5028                            mIncludePad);
5029                }
5030            } else if (shouldEllipsize) {
5031                mLayout = new StaticLayout(mTransformed,
5032                            0, mTransformed.length(),
5033                            mTextPaint, w, alignment, mSpacingMult,
5034                            mSpacingAdd, mIncludePad, mEllipsize,
5035                            ellipsisWidth);
5036            } else {
5037                mLayout = new StaticLayout(mTransformed, mTextPaint,
5038                        w, alignment, mSpacingMult, mSpacingAdd,
5039                        mIncludePad);
5040            }
5041        }
5042
5043        shouldEllipsize = mEllipsize != null;
5044        mHintLayout = null;
5045
5046        if (mHint != null) {
5047            if (shouldEllipsize) hintWidth = w;
5048
5049            if (hintBoring == UNKNOWN_BORING) {
5050                hintBoring = BoringLayout.isBoring(mHint, mTextPaint,
5051                                                   mHintBoring);
5052                if (hintBoring != null) {
5053                    mHintBoring = hintBoring;
5054                }
5055            }
5056
5057            if (hintBoring != null) {
5058                if (hintBoring.width <= hintWidth &&
5059                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
5060                    if (mSavedHintLayout != null) {
5061                        mHintLayout = mSavedHintLayout.
5062                                replaceOrMake(mHint, mTextPaint,
5063                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5064                                hintBoring, mIncludePad);
5065                    } else {
5066                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5067                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5068                                hintBoring, mIncludePad);
5069                    }
5070
5071                    mSavedHintLayout = (BoringLayout) mHintLayout;
5072                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
5073                    if (mSavedHintLayout != null) {
5074                        mHintLayout = mSavedHintLayout.
5075                                replaceOrMake(mHint, mTextPaint,
5076                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5077                                hintBoring, mIncludePad, mEllipsize,
5078                                ellipsisWidth);
5079                    } else {
5080                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5081                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5082                                hintBoring, mIncludePad, mEllipsize,
5083                                ellipsisWidth);
5084                    }
5085                } else if (shouldEllipsize) {
5086                    mHintLayout = new StaticLayout(mHint,
5087                                0, mHint.length(),
5088                                mTextPaint, hintWidth, alignment, mSpacingMult,
5089                                mSpacingAdd, mIncludePad, mEllipsize,
5090                                ellipsisWidth);
5091                } else {
5092                    mHintLayout = new StaticLayout(mHint, mTextPaint,
5093                            hintWidth, alignment, mSpacingMult, mSpacingAdd,
5094                            mIncludePad);
5095                }
5096            } else if (shouldEllipsize) {
5097                mHintLayout = new StaticLayout(mHint,
5098                            0, mHint.length(),
5099                            mTextPaint, hintWidth, alignment, mSpacingMult,
5100                            mSpacingAdd, mIncludePad, mEllipsize,
5101                            ellipsisWidth);
5102            } else {
5103                mHintLayout = new StaticLayout(mHint, mTextPaint,
5104                        hintWidth, alignment, mSpacingMult, mSpacingAdd,
5105                        mIncludePad);
5106            }
5107        }
5108
5109        if (bringIntoView) {
5110            registerForPreDraw();
5111        }
5112
5113        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5114            if (!compressText(ellipsisWidth)) {
5115                final int height = mLayoutParams.height;
5116                // If the size of the view does not depend on the size of the text, try to
5117                // start the marquee immediately
5118                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
5119                    startMarquee();
5120                } else {
5121                    // Defer the start of the marquee until we know our width (see setFrame())
5122                    mRestartMarquee = true;
5123                }
5124            }
5125        }
5126
5127        // CursorControllers need a non-null mLayout
5128        prepareCursorControllers();
5129    }
5130
5131    private boolean compressText(float width) {
5132        if (isHardwareAccelerated()) return false;
5133
5134        // Only compress the text if it hasn't been compressed by the previous pass
5135        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
5136                mTextPaint.getTextScaleX() == 1.0f) {
5137            final float textWidth = mLayout.getLineWidth(0);
5138            final float overflow = (textWidth + 1.0f - width) / width;
5139            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
5140                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
5141                post(new Runnable() {
5142                    public void run() {
5143                        requestLayout();
5144                    }
5145                });
5146                return true;
5147            }
5148        }
5149
5150        return false;
5151    }
5152
5153    private static int desired(Layout layout) {
5154        int n = layout.getLineCount();
5155        CharSequence text = layout.getText();
5156        float max = 0;
5157
5158        // if any line was wrapped, we can't use it.
5159        // but it's ok for the last line not to have a newline
5160
5161        for (int i = 0; i < n - 1; i++) {
5162            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
5163                return -1;
5164        }
5165
5166        for (int i = 0; i < n; i++) {
5167            max = Math.max(max, layout.getLineWidth(i));
5168        }
5169
5170        return (int) FloatMath.ceil(max);
5171    }
5172
5173    /**
5174     * Set whether the TextView includes extra top and bottom padding to make
5175     * room for accents that go above the normal ascent and descent.
5176     * The default is true.
5177     *
5178     * @attr ref android.R.styleable#TextView_includeFontPadding
5179     */
5180    public void setIncludeFontPadding(boolean includepad) {
5181        mIncludePad = includepad;
5182
5183        if (mLayout != null) {
5184            nullLayouts();
5185            requestLayout();
5186            invalidate();
5187        }
5188    }
5189
5190    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
5191
5192    @Override
5193    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
5194        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
5195        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
5196        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
5197        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
5198
5199        int width;
5200        int height;
5201
5202        BoringLayout.Metrics boring = UNKNOWN_BORING;
5203        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
5204
5205        int des = -1;
5206        boolean fromexisting = false;
5207
5208        if (widthMode == MeasureSpec.EXACTLY) {
5209            // Parent has told us how big to be. So be it.
5210            width = widthSize;
5211        } else {
5212            if (mLayout != null && mEllipsize == null) {
5213                des = desired(mLayout);
5214            }
5215
5216            if (des < 0) {
5217                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mBoring);
5218                if (boring != null) {
5219                    mBoring = boring;
5220                }
5221            } else {
5222                fromexisting = true;
5223            }
5224
5225            if (boring == null || boring == UNKNOWN_BORING) {
5226                if (des < 0) {
5227                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
5228                }
5229
5230                width = des;
5231            } else {
5232                width = boring.width;
5233            }
5234
5235            final Drawables dr = mDrawables;
5236            if (dr != null) {
5237                width = Math.max(width, dr.mDrawableWidthTop);
5238                width = Math.max(width, dr.mDrawableWidthBottom);
5239            }
5240
5241            if (mHint != null) {
5242                int hintDes = -1;
5243                int hintWidth;
5244
5245                if (mHintLayout != null && mEllipsize == null) {
5246                    hintDes = desired(mHintLayout);
5247                }
5248
5249                if (hintDes < 0) {
5250                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mHintBoring);
5251                    if (hintBoring != null) {
5252                        mHintBoring = hintBoring;
5253                    }
5254                }
5255
5256                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
5257                    if (hintDes < 0) {
5258                        hintDes = (int) FloatMath.ceil(
5259                                Layout.getDesiredWidth(mHint, mTextPaint));
5260                    }
5261
5262                    hintWidth = hintDes;
5263                } else {
5264                    hintWidth = hintBoring.width;
5265                }
5266
5267                if (hintWidth > width) {
5268                    width = hintWidth;
5269                }
5270            }
5271
5272            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
5273
5274            if (mMaxWidthMode == EMS) {
5275                width = Math.min(width, mMaxWidth * getLineHeight());
5276            } else {
5277                width = Math.min(width, mMaxWidth);
5278            }
5279
5280            if (mMinWidthMode == EMS) {
5281                width = Math.max(width, mMinWidth * getLineHeight());
5282            } else {
5283                width = Math.max(width, mMinWidth);
5284            }
5285
5286            // Check against our minimum width
5287            width = Math.max(width, getSuggestedMinimumWidth());
5288
5289            if (widthMode == MeasureSpec.AT_MOST) {
5290                width = Math.min(widthSize, width);
5291            }
5292        }
5293
5294        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
5295        int unpaddedWidth = want;
5296        int hintWant = want;
5297
5298        if (mHorizontallyScrolling)
5299            want = VERY_WIDE;
5300
5301        int hintWidth = mHintLayout == null ? hintWant : mHintLayout.getWidth();
5302
5303        if (mLayout == null) {
5304            makeNewLayout(want, hintWant, boring, hintBoring,
5305                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
5306        } else if ((mLayout.getWidth() != want) || (hintWidth != hintWant) ||
5307                   (mLayout.getEllipsizedWidth() !=
5308                        width - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
5309            if (mHint == null && mEllipsize == null &&
5310                    want > mLayout.getWidth() &&
5311                    (mLayout instanceof BoringLayout ||
5312                            (fromexisting && des >= 0 && des <= want))) {
5313                mLayout.increaseWidthTo(want);
5314            } else {
5315                makeNewLayout(want, hintWant, boring, hintBoring,
5316                              width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
5317            }
5318        } else {
5319            // Width has not changed.
5320        }
5321
5322        if (heightMode == MeasureSpec.EXACTLY) {
5323            // Parent has told us how big to be. So be it.
5324            height = heightSize;
5325            mDesiredHeightAtMeasure = -1;
5326        } else {
5327            int desired = getDesiredHeight();
5328
5329            height = desired;
5330            mDesiredHeightAtMeasure = desired;
5331
5332            if (heightMode == MeasureSpec.AT_MOST) {
5333                height = Math.min(desired, heightSize);
5334            }
5335        }
5336
5337        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
5338        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
5339            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
5340        }
5341
5342        /*
5343         * We didn't let makeNewLayout() register to bring the cursor into view,
5344         * so do it here if there is any possibility that it is needed.
5345         */
5346        if (mMovement != null ||
5347            mLayout.getWidth() > unpaddedWidth ||
5348            mLayout.getHeight() > unpaddedHeight) {
5349            registerForPreDraw();
5350        } else {
5351            scrollTo(0, 0);
5352        }
5353
5354        setMeasuredDimension(width, height);
5355    }
5356
5357    private int getDesiredHeight() {
5358        return Math.max(
5359                getDesiredHeight(mLayout, true),
5360                getDesiredHeight(mHintLayout, mEllipsize != null));
5361    }
5362
5363    private int getDesiredHeight(Layout layout, boolean cap) {
5364        if (layout == null) {
5365            return 0;
5366        }
5367
5368        int linecount = layout.getLineCount();
5369        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
5370        int desired = layout.getLineTop(linecount);
5371
5372        final Drawables dr = mDrawables;
5373        if (dr != null) {
5374            desired = Math.max(desired, dr.mDrawableHeightLeft);
5375            desired = Math.max(desired, dr.mDrawableHeightRight);
5376        }
5377
5378        desired += pad;
5379
5380        if (mMaxMode == LINES) {
5381            /*
5382             * Don't cap the hint to a certain number of lines.
5383             * (Do cap it, though, if we have a maximum pixel height.)
5384             */
5385            if (cap) {
5386                if (linecount > mMaximum) {
5387                    desired = layout.getLineTop(mMaximum) +
5388                              layout.getBottomPadding();
5389
5390                    if (dr != null) {
5391                        desired = Math.max(desired, dr.mDrawableHeightLeft);
5392                        desired = Math.max(desired, dr.mDrawableHeightRight);
5393                    }
5394
5395                    desired += pad;
5396                    linecount = mMaximum;
5397                }
5398            }
5399        } else {
5400            desired = Math.min(desired, mMaximum);
5401        }
5402
5403        if (mMinMode == LINES) {
5404            if (linecount < mMinimum) {
5405                desired += getLineHeight() * (mMinimum - linecount);
5406            }
5407        } else {
5408            desired = Math.max(desired, mMinimum);
5409        }
5410
5411        // Check against our minimum height
5412        desired = Math.max(desired, getSuggestedMinimumHeight());
5413
5414        return desired;
5415    }
5416
5417    /**
5418     * Check whether a change to the existing text layout requires a
5419     * new view layout.
5420     */
5421    private void checkForResize() {
5422        boolean sizeChanged = false;
5423
5424        if (mLayout != null) {
5425            // Check if our width changed
5426            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
5427                sizeChanged = true;
5428                invalidate();
5429            }
5430
5431            // Check if our height changed
5432            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
5433                int desiredHeight = getDesiredHeight();
5434
5435                if (desiredHeight != this.getHeight()) {
5436                    sizeChanged = true;
5437                }
5438            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
5439                if (mDesiredHeightAtMeasure >= 0) {
5440                    int desiredHeight = getDesiredHeight();
5441
5442                    if (desiredHeight != mDesiredHeightAtMeasure) {
5443                        sizeChanged = true;
5444                    }
5445                }
5446            }
5447        }
5448
5449        if (sizeChanged) {
5450            requestLayout();
5451            // caller will have already invalidated
5452        }
5453    }
5454
5455    /**
5456     * Check whether entirely new text requires a new view layout
5457     * or merely a new text layout.
5458     */
5459    private void checkForRelayout() {
5460        // If we have a fixed width, we can just swap in a new text layout
5461        // if the text height stays the same or if the view height is fixed.
5462
5463        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
5464                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
5465                (mHint == null || mHintLayout != null) &&
5466                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
5467            // Static width, so try making a new text layout.
5468
5469            int oldht = mLayout.getHeight();
5470            int want = mLayout.getWidth();
5471            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
5472
5473            /*
5474             * No need to bring the text into view, since the size is not
5475             * changing (unless we do the requestLayout(), in which case it
5476             * will happen at measure).
5477             */
5478            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
5479                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
5480                          false);
5481
5482            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
5483                // In a fixed-height view, so use our new text layout.
5484                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
5485                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
5486                    invalidate();
5487                    return;
5488                }
5489
5490                // Dynamic height, but height has stayed the same,
5491                // so use our new text layout.
5492                if (mLayout.getHeight() == oldht &&
5493                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
5494                    invalidate();
5495                    return;
5496                }
5497            }
5498
5499            // We lose: the height has changed and we have a dynamic height.
5500            // Request a new view layout using our new text layout.
5501            requestLayout();
5502            invalidate();
5503        } else {
5504            // Dynamic width, so we have no choice but to request a new
5505            // view layout with a new text layout.
5506
5507            nullLayouts();
5508            requestLayout();
5509            invalidate();
5510        }
5511    }
5512
5513    /**
5514     * Returns true if anything changed.
5515     */
5516    private boolean bringTextIntoView() {
5517        int line = 0;
5518        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5519            line = mLayout.getLineCount() - 1;
5520        }
5521
5522        Layout.Alignment a = mLayout.getParagraphAlignment(line);
5523        int dir = mLayout.getParagraphDirection(line);
5524        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5525        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
5526        int ht = mLayout.getHeight();
5527
5528        int scrollx, scrolly;
5529
5530        if (a == Layout.Alignment.ALIGN_CENTER) {
5531            /*
5532             * Keep centered if possible, or, if it is too wide to fit,
5533             * keep leading edge in view.
5534             */
5535
5536            int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
5537            int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5538
5539            if (right - left < hspace) {
5540                scrollx = (right + left) / 2 - hspace / 2;
5541            } else {
5542                if (dir < 0) {
5543                    scrollx = right - hspace;
5544                } else {
5545                    scrollx = left;
5546                }
5547            }
5548        } else if (a == Layout.Alignment.ALIGN_NORMAL) {
5549            /*
5550             * Keep leading edge in view.
5551             */
5552
5553            if (dir < 0) {
5554                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5555                scrollx = right - hspace;
5556            } else {
5557                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
5558            }
5559        } else /* a == Layout.Alignment.ALIGN_OPPOSITE */ {
5560            /*
5561             * Keep trailing edge in view.
5562             */
5563
5564            if (dir < 0) {
5565                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
5566            } else {
5567                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5568                scrollx = right - hspace;
5569            }
5570        }
5571
5572        if (ht < vspace) {
5573            scrolly = 0;
5574        } else {
5575            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5576                scrolly = ht - vspace;
5577            } else {
5578                scrolly = 0;
5579            }
5580        }
5581
5582        if (scrollx != mScrollX || scrolly != mScrollY) {
5583            scrollTo(scrollx, scrolly);
5584            return true;
5585        } else {
5586            return false;
5587        }
5588    }
5589
5590    /**
5591     * Move the point, specified by the offset, into the view if it is needed.
5592     * This has to be called after layout. Returns true if anything changed.
5593     */
5594    public boolean bringPointIntoView(int offset) {
5595        boolean changed = false;
5596
5597        int line = mLayout.getLineForOffset(offset);
5598
5599        // FIXME: Is it okay to truncate this, or should we round?
5600        final int x = (int)mLayout.getPrimaryHorizontal(offset);
5601        final int top = mLayout.getLineTop(line);
5602        final int bottom = mLayout.getLineTop(line + 1);
5603
5604        int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
5605        int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5606        int ht = mLayout.getHeight();
5607
5608        int grav;
5609
5610        switch (mLayout.getParagraphAlignment(line)) {
5611            case ALIGN_NORMAL:
5612                grav = 1;
5613                break;
5614
5615            case ALIGN_OPPOSITE:
5616                grav = -1;
5617                break;
5618
5619            default:
5620                grav = 0;
5621        }
5622
5623        grav *= mLayout.getParagraphDirection(line);
5624
5625        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5626        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
5627
5628        int hslack = (bottom - top) / 2;
5629        int vslack = hslack;
5630
5631        if (vslack > vspace / 4)
5632            vslack = vspace / 4;
5633        if (hslack > hspace / 4)
5634            hslack = hspace / 4;
5635
5636        int hs = mScrollX;
5637        int vs = mScrollY;
5638
5639        if (top - vs < vslack)
5640            vs = top - vslack;
5641        if (bottom - vs > vspace - vslack)
5642            vs = bottom - (vspace - vslack);
5643        if (ht - vs < vspace)
5644            vs = ht - vspace;
5645        if (0 - vs > 0)
5646            vs = 0;
5647
5648        if (grav != 0) {
5649            if (x - hs < hslack) {
5650                hs = x - hslack;
5651            }
5652            if (x - hs > hspace - hslack) {
5653                hs = x - (hspace - hslack);
5654            }
5655        }
5656
5657        if (grav < 0) {
5658            if (left - hs > 0)
5659                hs = left;
5660            if (right - hs < hspace)
5661                hs = right - hspace;
5662        } else if (grav > 0) {
5663            if (right - hs < hspace)
5664                hs = right - hspace;
5665            if (left - hs > 0)
5666                hs = left;
5667        } else /* grav == 0 */ {
5668            if (right - left <= hspace) {
5669                /*
5670                 * If the entire text fits, center it exactly.
5671                 */
5672                hs = left - (hspace - (right - left)) / 2;
5673            } else if (x > right - hslack) {
5674                /*
5675                 * If we are near the right edge, keep the right edge
5676                 * at the edge of the view.
5677                 */
5678                hs = right - hspace;
5679            } else if (x < left + hslack) {
5680                /*
5681                 * If we are near the left edge, keep the left edge
5682                 * at the edge of the view.
5683                 */
5684                hs = left;
5685            } else if (left > hs) {
5686                /*
5687                 * Is there whitespace visible at the left?  Fix it if so.
5688                 */
5689                hs = left;
5690            } else if (right < hs + hspace) {
5691                /*
5692                 * Is there whitespace visible at the right?  Fix it if so.
5693                 */
5694                hs = right - hspace;
5695            } else {
5696                /*
5697                 * Otherwise, float as needed.
5698                 */
5699                if (x - hs < hslack) {
5700                    hs = x - hslack;
5701                }
5702                if (x - hs > hspace - hslack) {
5703                    hs = x - (hspace - hslack);
5704                }
5705            }
5706        }
5707
5708        if (hs != mScrollX || vs != mScrollY) {
5709            if (mScroller == null) {
5710                scrollTo(hs, vs);
5711            } else {
5712                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
5713                int dx = hs - mScrollX;
5714                int dy = vs - mScrollY;
5715
5716                if (duration > ANIMATED_SCROLL_GAP) {
5717                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
5718                    awakenScrollBars(mScroller.getDuration());
5719                    invalidate();
5720                } else {
5721                    if (!mScroller.isFinished()) {
5722                        mScroller.abortAnimation();
5723                    }
5724
5725                    scrollBy(dx, dy);
5726                }
5727
5728                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
5729            }
5730
5731            changed = true;
5732        }
5733
5734        if (isFocused()) {
5735            // This offsets because getInterestingRect() is in terms of
5736            // viewport coordinates, but requestRectangleOnScreen()
5737            // is in terms of content coordinates.
5738
5739            Rect r = new Rect(x, top, x + 1, bottom);
5740            getInterestingRect(r, line);
5741            r.offset(mScrollX, mScrollY);
5742
5743            if (requestRectangleOnScreen(r)) {
5744                changed = true;
5745            }
5746        }
5747
5748        return changed;
5749    }
5750
5751    /**
5752     * Move the cursor, if needed, so that it is at an offset that is visible
5753     * to the user.  This will not move the cursor if it represents more than
5754     * one character (a selection range).  This will only work if the
5755     * TextView contains spannable text; otherwise it will do nothing.
5756     *
5757     * @return True if the cursor was actually moved, false otherwise.
5758     */
5759    public boolean moveCursorToVisibleOffset() {
5760        if (!(mText instanceof Spannable)) {
5761            return false;
5762        }
5763        int start = getSelectionStart();
5764        int end = getSelectionEnd();
5765        if (start != end) {
5766            return false;
5767        }
5768
5769        // First: make sure the line is visible on screen:
5770
5771        int line = mLayout.getLineForOffset(start);
5772
5773        final int top = mLayout.getLineTop(line);
5774        final int bottom = mLayout.getLineTop(line + 1);
5775        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
5776        int vslack = (bottom - top) / 2;
5777        if (vslack > vspace / 4)
5778            vslack = vspace / 4;
5779        final int vs = mScrollY;
5780
5781        if (top < (vs+vslack)) {
5782            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
5783        } else if (bottom > (vspace+vs-vslack)) {
5784            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
5785        }
5786
5787        // Next: make sure the character is visible on screen:
5788
5789        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5790        final int hs = mScrollX;
5791        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
5792        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
5793
5794        // line might contain bidirectional text
5795        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
5796        final int highChar = leftChar > rightChar ? leftChar : rightChar;
5797
5798        int newStart = start;
5799        if (newStart < lowChar) {
5800            newStart = lowChar;
5801        } else if (newStart > highChar) {
5802            newStart = highChar;
5803        }
5804
5805        if (newStart != start) {
5806            Selection.setSelection((Spannable)mText, newStart);
5807            return true;
5808        }
5809
5810        return false;
5811    }
5812
5813    @Override
5814    public void computeScroll() {
5815        if (mScroller != null) {
5816            if (mScroller.computeScrollOffset()) {
5817                mScrollX = mScroller.getCurrX();
5818                mScrollY = mScroller.getCurrY();
5819                postInvalidate();  // So we draw again
5820            }
5821        }
5822    }
5823
5824    private void getInterestingRect(Rect r, int line) {
5825        convertFromViewportToContentCoordinates(r);
5826
5827        // Rectangle can can be expanded on first and last line to take
5828        // padding into account.
5829        // TODO Take left/right padding into account too?
5830        if (line == 0) r.top -= getExtendedPaddingTop();
5831        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
5832    }
5833
5834    private void convertFromViewportToContentCoordinates(Rect r) {
5835        final int horizontalOffset = viewportToContentHorizontalOffset();
5836        r.left += horizontalOffset;
5837        r.right += horizontalOffset;
5838
5839        final int verticalOffset = viewportToContentVerticalOffset();
5840        r.top += verticalOffset;
5841        r.bottom += verticalOffset;
5842    }
5843
5844    private int viewportToContentHorizontalOffset() {
5845        return getCompoundPaddingLeft() - mScrollX;
5846    }
5847
5848    private int viewportToContentVerticalOffset() {
5849        int offset = getExtendedPaddingTop() - mScrollY;
5850        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5851            offset += getVerticalOffset(false);
5852        }
5853        return offset;
5854    }
5855
5856    @Override
5857    public void debug(int depth) {
5858        super.debug(depth);
5859
5860        String output = debugIndent(depth);
5861        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
5862                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
5863                + "} ";
5864
5865        if (mText != null) {
5866
5867            output += "mText=\"" + mText + "\" ";
5868            if (mLayout != null) {
5869                output += "mLayout width=" + mLayout.getWidth()
5870                        + " height=" + mLayout.getHeight();
5871            }
5872        } else {
5873            output += "mText=NULL";
5874        }
5875        Log.d(VIEW_LOG_TAG, output);
5876    }
5877
5878    /**
5879     * Convenience for {@link Selection#getSelectionStart}.
5880     */
5881    @ViewDebug.ExportedProperty(category = "text")
5882    public int getSelectionStart() {
5883        return Selection.getSelectionStart(getText());
5884    }
5885
5886    /**
5887     * Convenience for {@link Selection#getSelectionEnd}.
5888     */
5889    @ViewDebug.ExportedProperty(category = "text")
5890    public int getSelectionEnd() {
5891        return Selection.getSelectionEnd(getText());
5892    }
5893
5894    /**
5895     * Return true iff there is a selection inside this text view.
5896     */
5897    public boolean hasSelection() {
5898        final int selectionStart = getSelectionStart();
5899        final int selectionEnd = getSelectionEnd();
5900
5901        return selectionStart >= 0 && selectionStart != selectionEnd;
5902    }
5903
5904    /**
5905     * Sets the properties of this field (lines, horizontally scrolling,
5906     * transformation method) to be for a single-line input.
5907     *
5908     * @attr ref android.R.styleable#TextView_singleLine
5909     */
5910    public void setSingleLine() {
5911        setSingleLine(true);
5912    }
5913
5914    /**
5915     * If true, sets the properties of this field (lines, horizontally
5916     * scrolling, transformation method) to be for a single-line input;
5917     * if false, restores these to the default conditions.
5918     * Note that calling this with false restores default conditions,
5919     * not necessarily those that were in effect prior to calling
5920     * it with true.
5921     *
5922     * @attr ref android.R.styleable#TextView_singleLine
5923     */
5924    @android.view.RemotableViewMethod
5925    public void setSingleLine(boolean singleLine) {
5926        if ((mInputType&EditorInfo.TYPE_MASK_CLASS)
5927                == EditorInfo.TYPE_CLASS_TEXT) {
5928            if (singleLine) {
5929                mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
5930            } else {
5931                mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
5932            }
5933        }
5934        applySingleLine(singleLine, true);
5935    }
5936
5937    private void applySingleLine(boolean singleLine, boolean applyTransformation) {
5938        mSingleLine = singleLine;
5939        if (singleLine) {
5940            setLines(1);
5941            setHorizontallyScrolling(true);
5942            if (applyTransformation) {
5943                setTransformationMethod(SingleLineTransformationMethod.
5944                                        getInstance());
5945            }
5946        } else {
5947            setMaxLines(Integer.MAX_VALUE);
5948            setHorizontallyScrolling(false);
5949            if (applyTransformation) {
5950                setTransformationMethod(null);
5951            }
5952        }
5953    }
5954
5955    /**
5956     * Causes words in the text that are longer than the view is wide
5957     * to be ellipsized instead of broken in the middle.  You may also
5958     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
5959     * to constrain the text to a single line.  Use <code>null</code>
5960     * to turn off ellipsizing.
5961     *
5962     * @attr ref android.R.styleable#TextView_ellipsize
5963     */
5964    public void setEllipsize(TextUtils.TruncateAt where) {
5965        mEllipsize = where;
5966
5967        if (mLayout != null) {
5968            nullLayouts();
5969            requestLayout();
5970            invalidate();
5971        }
5972    }
5973
5974    /**
5975     * Sets how many times to repeat the marquee animation. Only applied if the
5976     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
5977     *
5978     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
5979     */
5980    public void setMarqueeRepeatLimit(int marqueeLimit) {
5981        mMarqueeRepeatLimit = marqueeLimit;
5982    }
5983
5984    /**
5985     * Returns where, if anywhere, words that are longer than the view
5986     * is wide should be ellipsized.
5987     */
5988    @ViewDebug.ExportedProperty
5989    public TextUtils.TruncateAt getEllipsize() {
5990        return mEllipsize;
5991    }
5992
5993    /**
5994     * Set the TextView so that when it takes focus, all the text is
5995     * selected.
5996     *
5997     * @attr ref android.R.styleable#TextView_selectAllOnFocus
5998     */
5999    @android.view.RemotableViewMethod
6000    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
6001        mSelectAllOnFocus = selectAllOnFocus;
6002
6003        if (selectAllOnFocus && !(mText instanceof Spannable)) {
6004            setText(mText, BufferType.SPANNABLE);
6005        }
6006    }
6007
6008    /**
6009     * Set whether the cursor is visible.  The default is true.
6010     *
6011     * @attr ref android.R.styleable#TextView_cursorVisible
6012     */
6013    @android.view.RemotableViewMethod
6014    public void setCursorVisible(boolean visible) {
6015        mCursorVisible = visible;
6016        invalidate();
6017
6018        if (visible) {
6019            makeBlink();
6020        } else if (mBlink != null) {
6021            mBlink.removeCallbacks(mBlink);
6022        }
6023
6024        // InsertionPointCursorController depends on mCursorVisible
6025        prepareCursorControllers();
6026    }
6027
6028    private boolean canMarquee() {
6029        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
6030        return width > 0 && mLayout.getLineWidth(0) > width;
6031    }
6032
6033    private void startMarquee() {
6034        // Do not ellipsize EditText
6035        if (mInput != null) return;
6036
6037        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
6038            return;
6039        }
6040
6041        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
6042                getLineCount() == 1 && canMarquee()) {
6043
6044            if (mMarquee == null) mMarquee = new Marquee(this);
6045            mMarquee.start(mMarqueeRepeatLimit);
6046        }
6047    }
6048
6049    private void stopMarquee() {
6050        if (mMarquee != null && !mMarquee.isStopped()) {
6051            mMarquee.stop();
6052        }
6053    }
6054
6055    private void startStopMarquee(boolean start) {
6056        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6057            if (start) {
6058                startMarquee();
6059            } else {
6060                stopMarquee();
6061            }
6062        }
6063    }
6064
6065    private static final class Marquee extends Handler {
6066        // TODO: Add an option to configure this
6067        private static final float MARQUEE_DELTA_MAX = 0.07f;
6068        private static final int MARQUEE_DELAY = 1200;
6069        private static final int MARQUEE_RESTART_DELAY = 1200;
6070        private static final int MARQUEE_RESOLUTION = 1000 / 30;
6071        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
6072
6073        private static final byte MARQUEE_STOPPED = 0x0;
6074        private static final byte MARQUEE_STARTING = 0x1;
6075        private static final byte MARQUEE_RUNNING = 0x2;
6076
6077        private static final int MESSAGE_START = 0x1;
6078        private static final int MESSAGE_TICK = 0x2;
6079        private static final int MESSAGE_RESTART = 0x3;
6080
6081        private final WeakReference<TextView> mView;
6082
6083        private byte mStatus = MARQUEE_STOPPED;
6084        private final float mScrollUnit;
6085        private float mMaxScroll;
6086        float mMaxFadeScroll;
6087        private float mGhostStart;
6088        private float mGhostOffset;
6089        private float mFadeStop;
6090        private int mRepeatLimit;
6091
6092        float mScroll;
6093
6094        Marquee(TextView v) {
6095            final float density = v.getContext().getResources().getDisplayMetrics().density;
6096            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / MARQUEE_RESOLUTION;
6097            mView = new WeakReference<TextView>(v);
6098        }
6099
6100        @Override
6101        public void handleMessage(Message msg) {
6102            switch (msg.what) {
6103                case MESSAGE_START:
6104                    mStatus = MARQUEE_RUNNING;
6105                    tick();
6106                    break;
6107                case MESSAGE_TICK:
6108                    tick();
6109                    break;
6110                case MESSAGE_RESTART:
6111                    if (mStatus == MARQUEE_RUNNING) {
6112                        if (mRepeatLimit >= 0) {
6113                            mRepeatLimit--;
6114                        }
6115                        start(mRepeatLimit);
6116                    }
6117                    break;
6118            }
6119        }
6120
6121        void tick() {
6122            if (mStatus != MARQUEE_RUNNING) {
6123                return;
6124            }
6125
6126            removeMessages(MESSAGE_TICK);
6127
6128            final TextView textView = mView.get();
6129            if (textView != null && (textView.isFocused() || textView.isSelected())) {
6130                mScroll += mScrollUnit;
6131                if (mScroll > mMaxScroll) {
6132                    mScroll = mMaxScroll;
6133                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
6134                } else {
6135                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
6136                }
6137                textView.invalidate();
6138            }
6139        }
6140
6141        void stop() {
6142            mStatus = MARQUEE_STOPPED;
6143            removeMessages(MESSAGE_START);
6144            removeMessages(MESSAGE_RESTART);
6145            removeMessages(MESSAGE_TICK);
6146            resetScroll();
6147        }
6148
6149        private void resetScroll() {
6150            mScroll = 0.0f;
6151            final TextView textView = mView.get();
6152            if (textView != null) textView.invalidate();
6153        }
6154
6155        void start(int repeatLimit) {
6156            if (repeatLimit == 0) {
6157                stop();
6158                return;
6159            }
6160            mRepeatLimit = repeatLimit;
6161            final TextView textView = mView.get();
6162            if (textView != null && textView.mLayout != null) {
6163                mStatus = MARQUEE_STARTING;
6164                mScroll = 0.0f;
6165                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
6166                        textView.getCompoundPaddingRight();
6167                final float lineWidth = textView.mLayout.getLineWidth(0);
6168                final float gap = textWidth / 3.0f;
6169                mGhostStart = lineWidth - textWidth + gap;
6170                mMaxScroll = mGhostStart + textWidth;
6171                mGhostOffset = lineWidth + gap;
6172                mFadeStop = lineWidth + textWidth / 6.0f;
6173                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
6174
6175                textView.invalidate();
6176                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
6177            }
6178        }
6179
6180        float getGhostOffset() {
6181            return mGhostOffset;
6182        }
6183
6184        boolean shouldDrawLeftFade() {
6185            return mScroll <= mFadeStop;
6186        }
6187
6188        boolean shouldDrawGhost() {
6189            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
6190        }
6191
6192        boolean isRunning() {
6193            return mStatus == MARQUEE_RUNNING;
6194        }
6195
6196        boolean isStopped() {
6197            return mStatus == MARQUEE_STOPPED;
6198        }
6199    }
6200
6201    /**
6202     * This method is called when the text is changed, in case any
6203     * subclasses would like to know.
6204     *
6205     * @param text The text the TextView is displaying.
6206     * @param start The offset of the start of the range of the text
6207     *              that was modified.
6208     * @param before The offset of the former end of the range of the
6209     *               text that was modified.  If text was simply inserted,
6210     *               this will be the same as <code>start</code>.
6211     *               If text was replaced with new text or deleted, the
6212     *               length of the old text was <code>before-start</code>.
6213     * @param after The offset of the end of the range of the text
6214     *              that was modified.  If text was simply deleted,
6215     *              this will be the same as <code>start</code>.
6216     *              If text was replaced with new text or inserted,
6217     *              the length of the new text is <code>after-start</code>.
6218     */
6219    protected void onTextChanged(CharSequence text,
6220                                 int start, int before, int after) {
6221    }
6222
6223    /**
6224     * This method is called when the selection has changed, in case any
6225     * subclasses would like to know.
6226     *
6227     * @param selStart The new selection start location.
6228     * @param selEnd The new selection end location.
6229     */
6230    protected void onSelectionChanged(int selStart, int selEnd) {
6231    }
6232
6233    /**
6234     * Adds a TextWatcher to the list of those whose methods are called
6235     * whenever this TextView's text changes.
6236     * <p>
6237     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
6238     * not called after {@link #setText} calls.  Now, doing {@link #setText}
6239     * if there are any text changed listeners forces the buffer type to
6240     * Editable if it would not otherwise be and does call this method.
6241     */
6242    public void addTextChangedListener(TextWatcher watcher) {
6243        if (mListeners == null) {
6244            mListeners = new ArrayList<TextWatcher>();
6245        }
6246
6247        mListeners.add(watcher);
6248    }
6249
6250    /**
6251     * Removes the specified TextWatcher from the list of those whose
6252     * methods are called
6253     * whenever this TextView's text changes.
6254     */
6255    public void removeTextChangedListener(TextWatcher watcher) {
6256        if (mListeners != null) {
6257            int i = mListeners.indexOf(watcher);
6258
6259            if (i >= 0) {
6260                mListeners.remove(i);
6261            }
6262        }
6263    }
6264
6265    private void sendBeforeTextChanged(CharSequence text, int start, int before,
6266                                   int after) {
6267        if (mListeners != null) {
6268            final ArrayList<TextWatcher> list = mListeners;
6269            final int count = list.size();
6270            for (int i = 0; i < count; i++) {
6271                list.get(i).beforeTextChanged(text, start, before, after);
6272            }
6273        }
6274    }
6275
6276    /**
6277     * Not private so it can be called from an inner class without going
6278     * through a thunk.
6279     */
6280    void sendOnTextChanged(CharSequence text, int start, int before,
6281                                   int after) {
6282        if (mListeners != null) {
6283            final ArrayList<TextWatcher> list = mListeners;
6284            final int count = list.size();
6285            for (int i = 0; i < count; i++) {
6286                list.get(i).onTextChanged(text, start, before, after);
6287            }
6288        }
6289    }
6290
6291    /**
6292     * Not private so it can be called from an inner class without going
6293     * through a thunk.
6294     */
6295    void sendAfterTextChanged(Editable text) {
6296        if (mListeners != null) {
6297            final ArrayList<TextWatcher> list = mListeners;
6298            final int count = list.size();
6299            for (int i = 0; i < count; i++) {
6300                list.get(i).afterTextChanged(text);
6301            }
6302        }
6303    }
6304
6305    /**
6306     * Not private so it can be called from an inner class without going
6307     * through a thunk.
6308     */
6309    void handleTextChanged(CharSequence buffer, int start,
6310            int before, int after) {
6311        final InputMethodState ims = mInputMethodState;
6312        if (ims == null || ims.mBatchEditNesting == 0) {
6313            updateAfterEdit();
6314        }
6315        if (ims != null) {
6316            ims.mContentChanged = true;
6317            if (ims.mChangedStart < 0) {
6318                ims.mChangedStart = start;
6319                ims.mChangedEnd = start+before;
6320            } else {
6321                ims.mChangedStart = Math.min(ims.mChangedStart, start);
6322                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
6323            }
6324            ims.mChangedDelta += after-before;
6325        }
6326
6327        sendOnTextChanged(buffer, start, before, after);
6328        onTextChanged(buffer, start, before, after);
6329        hideControllers();
6330    }
6331
6332    /**
6333     * Not private so it can be called from an inner class without going
6334     * through a thunk.
6335     */
6336    void spanChange(Spanned buf, Object what, int oldStart, int newStart,
6337            int oldEnd, int newEnd) {
6338        // XXX Make the start and end move together if this ends up
6339        // spending too much time invalidating.
6340
6341        boolean selChanged = false;
6342        int newSelStart=-1, newSelEnd=-1;
6343
6344        final InputMethodState ims = mInputMethodState;
6345
6346        if (what == Selection.SELECTION_END) {
6347            mHighlightPathBogus = true;
6348            selChanged = true;
6349            newSelEnd = newStart;
6350
6351            if (!isFocused()) {
6352                mSelectionMoved = true;
6353            }
6354
6355            if (oldStart >= 0 || newStart >= 0) {
6356                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
6357                registerForPreDraw();
6358
6359                if (isFocused()) {
6360                    mShowCursor = SystemClock.uptimeMillis();
6361                    makeBlink();
6362                }
6363            }
6364        }
6365
6366        if (what == Selection.SELECTION_START) {
6367            mHighlightPathBogus = true;
6368            selChanged = true;
6369            newSelStart = newStart;
6370
6371            if (!isFocused()) {
6372                mSelectionMoved = true;
6373            }
6374
6375            if (oldStart >= 0 || newStart >= 0) {
6376                int end = Selection.getSelectionEnd(buf);
6377                invalidateCursor(end, oldStart, newStart);
6378            }
6379        }
6380
6381        if (selChanged) {
6382            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
6383                if (newSelStart < 0) {
6384                    newSelStart = Selection.getSelectionStart(buf);
6385                }
6386                if (newSelEnd < 0) {
6387                    newSelEnd = Selection.getSelectionEnd(buf);
6388                }
6389                onSelectionChanged(newSelStart, newSelEnd);
6390            }
6391        }
6392
6393        if (what instanceof UpdateAppearance ||
6394            what instanceof ParagraphStyle) {
6395            if (ims == null || ims.mBatchEditNesting == 0) {
6396                invalidate();
6397                mHighlightPathBogus = true;
6398                checkForResize();
6399            } else {
6400                ims.mContentChanged = true;
6401            }
6402        }
6403
6404        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
6405            mHighlightPathBogus = true;
6406            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
6407                ims.mSelectionModeChanged = true;
6408            }
6409
6410            if (Selection.getSelectionStart(buf) >= 0) {
6411                if (ims == null || ims.mBatchEditNesting == 0) {
6412                    invalidateCursor();
6413                } else {
6414                    ims.mCursorChanged = true;
6415                }
6416            }
6417        }
6418
6419        if (what instanceof ParcelableSpan) {
6420            // If this is a span that can be sent to a remote process,
6421            // the current extract editor would be interested in it.
6422            if (ims != null && ims.mExtracting != null) {
6423                if (ims.mBatchEditNesting != 0) {
6424                    if (oldStart >= 0) {
6425                        if (ims.mChangedStart > oldStart) {
6426                            ims.mChangedStart = oldStart;
6427                        }
6428                        if (ims.mChangedStart > oldEnd) {
6429                            ims.mChangedStart = oldEnd;
6430                        }
6431                    }
6432                    if (newStart >= 0) {
6433                        if (ims.mChangedStart > newStart) {
6434                            ims.mChangedStart = newStart;
6435                        }
6436                        if (ims.mChangedStart > newEnd) {
6437                            ims.mChangedStart = newEnd;
6438                        }
6439                    }
6440                } else {
6441                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
6442                            + oldStart + "-" + oldEnd + ","
6443                            + newStart + "-" + newEnd + what);
6444                    ims.mContentChanged = true;
6445                }
6446            }
6447        }
6448    }
6449
6450    private class ChangeWatcher
6451    implements TextWatcher, SpanWatcher {
6452
6453        private CharSequence mBeforeText;
6454
6455        public void beforeTextChanged(CharSequence buffer, int start,
6456                                      int before, int after) {
6457            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
6458                    + " before=" + before + " after=" + after + ": " + buffer);
6459
6460            if (AccessibilityManager.getInstance(mContext).isEnabled()
6461                    && !isPasswordInputType(mInputType)) {
6462                mBeforeText = buffer.toString();
6463            }
6464
6465            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
6466        }
6467
6468        public void onTextChanged(CharSequence buffer, int start,
6469                                  int before, int after) {
6470            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
6471                    + " before=" + before + " after=" + after + ": " + buffer);
6472            TextView.this.handleTextChanged(buffer, start, before, after);
6473
6474            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
6475                    (isFocused() || isSelected() &&
6476                    isShown())) {
6477                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
6478                mBeforeText = null;
6479            }
6480        }
6481
6482        public void afterTextChanged(Editable buffer) {
6483            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
6484            TextView.this.sendAfterTextChanged(buffer);
6485
6486            if (MetaKeyKeyListener.getMetaState(buffer,
6487                                 MetaKeyKeyListener.META_SELECTING) != 0) {
6488                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
6489            }
6490        }
6491
6492        public void onSpanChanged(Spannable buf,
6493                                  Object what, int s, int e, int st, int en) {
6494            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
6495                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
6496            TextView.this.spanChange(buf, what, s, st, e, en);
6497        }
6498
6499        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
6500            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
6501                    + " what=" + what + ": " + buf);
6502            TextView.this.spanChange(buf, what, -1, s, -1, e);
6503        }
6504
6505        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
6506            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
6507                    + " what=" + what + ": " + buf);
6508            TextView.this.spanChange(buf, what, s, -1, e, -1);
6509        }
6510    }
6511
6512    private void makeBlink() {
6513        if (!mCursorVisible) {
6514            if (mBlink != null) {
6515                mBlink.removeCallbacks(mBlink);
6516            }
6517
6518            return;
6519        }
6520
6521        if (mBlink == null)
6522            mBlink = new Blink(this);
6523
6524        mBlink.removeCallbacks(mBlink);
6525        mBlink.postAtTime(mBlink, mShowCursor + BLINK);
6526    }
6527
6528    /**
6529     * @hide
6530     */
6531    @Override
6532    public void dispatchFinishTemporaryDetach() {
6533        mDispatchTemporaryDetach = true;
6534        super.dispatchFinishTemporaryDetach();
6535        mDispatchTemporaryDetach = false;
6536    }
6537
6538    @Override
6539    public void onStartTemporaryDetach() {
6540        super.onStartTemporaryDetach();
6541        // Only track when onStartTemporaryDetach() is called directly,
6542        // usually because this instance is an editable field in a list
6543        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
6544    }
6545
6546    @Override
6547    public void onFinishTemporaryDetach() {
6548        super.onFinishTemporaryDetach();
6549        // Only track when onStartTemporaryDetach() is called directly,
6550        // usually because this instance is an editable field in a list
6551        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
6552    }
6553
6554    @Override
6555    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
6556        if (mTemporaryDetach) {
6557            // If we are temporarily in the detach state, then do nothing.
6558            super.onFocusChanged(focused, direction, previouslyFocusedRect);
6559            return;
6560        }
6561
6562        mShowCursor = SystemClock.uptimeMillis();
6563
6564        ensureEndedBatchEdit();
6565
6566        if (focused) {
6567            int selStart = getSelectionStart();
6568            int selEnd = getSelectionEnd();
6569
6570            if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) {
6571                // Has to be done before onTakeFocus, which can be overloaded.
6572                if (mLastTouchOffset >= 0) {
6573                    // Can happen when a TextView is displayed after its content has been deleted.
6574                    mLastTouchOffset = Math.min(mLastTouchOffset, mText.length());
6575                    Selection.setSelection((Spannable) mText, mLastTouchOffset);
6576                }
6577
6578                if (mMovement != null) {
6579                    mMovement.onTakeFocus(this, (Spannable) mText, direction);
6580                }
6581
6582                if (mSelectAllOnFocus) {
6583                    Selection.setSelection((Spannable) mText, 0, mText.length());
6584                }
6585
6586                // The DecorView does not have focus when the 'Done' ExtractEditText button is
6587                // pressed. Since it is the ViewRoot's mView, it requests focus before
6588                // ExtractEditText clears focus, which gives focus to the ExtractEditText.
6589                // This special case ensure that we keep current selection in that case.
6590                // It would be better to know why the DecorView does not have focus at that time.
6591                if (((this instanceof ExtractEditText) || mSelectionMoved) &&
6592                        selStart >= 0 && selEnd >= 0) {
6593                    /*
6594                     * Someone intentionally set the selection, so let them
6595                     * do whatever it is that they wanted to do instead of
6596                     * the default on-focus behavior.  We reset the selection
6597                     * here instead of just skipping the onTakeFocus() call
6598                     * because some movement methods do something other than
6599                     * just setting the selection in theirs and we still
6600                     * need to go through that path.
6601                     */
6602                    Selection.setSelection((Spannable) mText, selStart, selEnd);
6603                }
6604                mTouchFocusSelected = true;
6605            }
6606
6607            mFrozenWithFocus = false;
6608            mSelectionMoved = false;
6609
6610            if (mText instanceof Spannable) {
6611                Spannable sp = (Spannable) mText;
6612                MetaKeyKeyListener.resetMetaState(sp);
6613            }
6614
6615            makeBlink();
6616
6617            if (mError != null) {
6618                showError();
6619            }
6620        } else {
6621            if (mError != null) {
6622                hideError();
6623            }
6624            // Don't leave us in the middle of a batch edit.
6625            onEndBatchEdit();
6626
6627            hideInsertionPointCursorController();
6628            if (this instanceof ExtractEditText) {
6629                // terminateTextSelectionMode removes selection, which we want to keep when
6630                // ExtractEditText goes out of focus.
6631                final int selStart = getSelectionStart();
6632                final int selEnd = getSelectionEnd();
6633                terminateSelectionActionMode();
6634                Selection.setSelection((Spannable) mText, selStart, selEnd);
6635            } else {
6636                terminateSelectionActionMode();
6637            }
6638        }
6639
6640        startStopMarquee(focused);
6641
6642        if (mTransformation != null) {
6643            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
6644        }
6645
6646        super.onFocusChanged(focused, direction, previouslyFocusedRect);
6647    }
6648
6649    @Override
6650    public void onWindowFocusChanged(boolean hasWindowFocus) {
6651        super.onWindowFocusChanged(hasWindowFocus);
6652
6653        if (hasWindowFocus) {
6654            if (mBlink != null) {
6655                mBlink.uncancel();
6656
6657                if (isFocused()) {
6658                    mShowCursor = SystemClock.uptimeMillis();
6659                    makeBlink();
6660                }
6661            }
6662        } else {
6663            if (mBlink != null) {
6664                mBlink.cancel();
6665            }
6666            // Don't leave us in the middle of a batch edit.
6667            onEndBatchEdit();
6668            if (mInputContentType != null) {
6669                mInputContentType.enterDown = false;
6670            }
6671        }
6672
6673        startStopMarquee(hasWindowFocus);
6674    }
6675
6676    /**
6677     * Use {@link BaseInputConnection#removeComposingSpans
6678     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
6679     * state from this text view.
6680     */
6681    public void clearComposingText() {
6682        if (mText instanceof Spannable) {
6683            BaseInputConnection.removeComposingSpans((Spannable)mText);
6684        }
6685    }
6686
6687    @Override
6688    public void setSelected(boolean selected) {
6689        boolean wasSelected = isSelected();
6690
6691        super.setSelected(selected);
6692
6693        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6694            if (selected) {
6695                startMarquee();
6696            } else {
6697                stopMarquee();
6698            }
6699        }
6700    }
6701
6702    private void onTapUpEvent(int prevStart, int prevEnd) {
6703        final int start = getSelectionStart();
6704        final int end = getSelectionEnd();
6705
6706        if (start == end) {
6707            if (start >= prevStart && start < prevEnd) {
6708                // Restore previous selection
6709                Selection.setSelection((Spannable)mText, prevStart, prevEnd);
6710                // Tapping inside the selection displays the cut/copy/paste context menu.
6711                showContextMenu();
6712                return;
6713            } else {
6714                // Tapping outside stops selection mode, if any
6715                stopSelectionActionMode();
6716
6717                if (mInsertionPointCursorController != null) {
6718                    mInsertionPointCursorController.show();
6719                }
6720            }
6721        }
6722    }
6723
6724    class CommitSelectionReceiver extends ResultReceiver {
6725        private final int mPrevStart, mPrevEnd;
6726
6727        public CommitSelectionReceiver(int prevStart, int prevEnd) {
6728            super(getHandler());
6729            mPrevStart = prevStart;
6730            mPrevEnd = prevEnd;
6731        }
6732
6733        @Override
6734        protected void onReceiveResult(int resultCode, Bundle resultData) {
6735            // If this tap was actually used to show the IMM, leave cursor or selection unchanged
6736            // by restoring its previous position.
6737            if (resultCode == InputMethodManager.RESULT_SHOWN) {
6738                final int len = mText.length();
6739                int start = Math.min(len, mPrevStart);
6740                int end = Math.min(len, mPrevEnd);
6741                Selection.setSelection((Spannable)mText, start, end);
6742
6743                if (hasSelection()) {
6744                    startSelectionActionMode();
6745                } else if (mInsertionPointCursorController != null) {
6746                    mInsertionPointCursorController.show();
6747                }
6748            }
6749        }
6750    }
6751
6752    @Override
6753    public boolean onTouchEvent(MotionEvent event) {
6754        final int action = event.getActionMasked();
6755        if (action == MotionEvent.ACTION_DOWN) {
6756            if (mInsertionPointCursorController != null) {
6757                mInsertionPointCursorController.onTouchEvent(event);
6758            }
6759            if (mSelectionModifierCursorController != null) {
6760                mSelectionModifierCursorController.onTouchEvent(event);
6761            }
6762
6763            // Reset this state; it will be re-set if super.onTouchEvent
6764            // causes focus to move to the view.
6765            mTouchFocusSelected = false;
6766            mScrolled = false;
6767        }
6768
6769        final boolean superResult = super.onTouchEvent(event);
6770
6771        /*
6772         * Don't handle the release after a long press, because it will
6773         * move the selection away from whatever the menu action was
6774         * trying to affect.
6775         */
6776        if (mEatTouchRelease && action == MotionEvent.ACTION_UP) {
6777            mEatTouchRelease = false;
6778            return superResult;
6779        }
6780
6781        if ((mMovement != null || onCheckIsTextEditor()) && mText instanceof Spannable && mLayout != null) {
6782            if (mInsertionPointCursorController != null) {
6783                mInsertionPointCursorController.onTouchEvent(event);
6784            }
6785            if (mSelectionModifierCursorController != null) {
6786                mSelectionModifierCursorController.onTouchEvent(event);
6787            }
6788
6789            boolean handled = false;
6790
6791            // Save previous selection, in case this event is used to show the IME.
6792            int oldSelStart = getSelectionStart();
6793            int oldSelEnd = getSelectionEnd();
6794
6795            final int oldScrollX = mScrollX;
6796            final int oldScrollY = mScrollY;
6797
6798            if (mMovement != null) {
6799                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
6800            }
6801
6802            if (isTextEditable()) {
6803                if (mScrollX != oldScrollX || mScrollY != oldScrollY) {
6804                    // Hide insertion anchor while scrolling. Leave selection.
6805                    hideInsertionPointCursorController();
6806                    if (mSelectionModifierCursorController != null &&
6807                            mSelectionModifierCursorController.isShowing()) {
6808                        mSelectionModifierCursorController.updatePosition();
6809                    }
6810                }
6811                if (action == MotionEvent.ACTION_UP && isFocused() && !mScrolled) {
6812                    InputMethodManager imm = (InputMethodManager)
6813                          getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
6814
6815                    CommitSelectionReceiver csr = null;
6816                    if (getSelectionStart() != oldSelStart || getSelectionEnd() != oldSelEnd ||
6817                            didTouchFocusSelect()) {
6818                        csr = new CommitSelectionReceiver(oldSelStart, oldSelEnd);
6819                    }
6820
6821                    handled |= imm.showSoftInput(this, 0, csr) && (csr != null);
6822
6823                    // Cannot be done by CommitSelectionReceiver, which might not always be called,
6824                    // for instance when dealing with an ExtractEditText.
6825                    onTapUpEvent(oldSelStart, oldSelEnd);
6826                }
6827            }
6828
6829            if (handled) {
6830                return true;
6831            }
6832        }
6833
6834        return superResult;
6835    }
6836
6837    private void prepareCursorControllers() {
6838        // TODO Add an extra android:cursorController flag to disable the controller?
6839        if (mCursorVisible && mLayout != null) {
6840            if (mInsertionPointCursorController == null) {
6841                mInsertionPointCursorController = new InsertionPointCursorController();
6842            }
6843        } else {
6844            mInsertionPointCursorController = null;
6845        }
6846
6847        if (canSelectText() && mLayout != null) {
6848            if (mSelectionModifierCursorController == null) {
6849                mSelectionModifierCursorController = new SelectionModifierCursorController();
6850            }
6851        } else {
6852            // Stop selection mode if the controller becomes unavailable.
6853            stopSelectionActionMode();
6854            mSelectionModifierCursorController = null;
6855        }
6856    }
6857
6858    /**
6859     * @return True iff this TextView contains a text that can be edited.
6860     */
6861    private boolean isTextEditable() {
6862        return mText instanceof Editable && onCheckIsTextEditor();
6863    }
6864
6865    /**
6866     * Returns true, only while processing a touch gesture, if the initial
6867     * touch down event caused focus to move to the text view and as a result
6868     * its selection changed.  Only valid while processing the touch gesture
6869     * of interest.
6870     */
6871    public boolean didTouchFocusSelect() {
6872        return mTouchFocusSelected;
6873    }
6874
6875    @Override
6876    public void cancelLongPress() {
6877        super.cancelLongPress();
6878        mScrolled = true;
6879    }
6880
6881    @Override
6882    public boolean onTrackballEvent(MotionEvent event) {
6883        if (mMovement != null && mText instanceof Spannable &&
6884            mLayout != null) {
6885            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
6886                return true;
6887            }
6888        }
6889
6890        return super.onTrackballEvent(event);
6891    }
6892
6893    public void setScroller(Scroller s) {
6894        mScroller = s;
6895    }
6896
6897    private static class Blink extends Handler implements Runnable {
6898        private final WeakReference<TextView> mView;
6899        private boolean mCancelled;
6900
6901        public Blink(TextView v) {
6902            mView = new WeakReference<TextView>(v);
6903        }
6904
6905        public void run() {
6906            if (mCancelled) {
6907                return;
6908            }
6909
6910            removeCallbacks(Blink.this);
6911
6912            TextView tv = mView.get();
6913
6914            if (tv != null && tv.isFocused()) {
6915                int st = tv.getSelectionStart();
6916                int en = tv.getSelectionEnd();
6917
6918                if (st == en && st >= 0 && en >= 0) {
6919                    if (tv.mLayout != null) {
6920                        tv.invalidateCursorPath();
6921                    }
6922
6923                    postAtTime(this, SystemClock.uptimeMillis() + BLINK);
6924                }
6925            }
6926        }
6927
6928        void cancel() {
6929            if (!mCancelled) {
6930                removeCallbacks(Blink.this);
6931                mCancelled = true;
6932            }
6933        }
6934
6935        void uncancel() {
6936            mCancelled = false;
6937        }
6938    }
6939
6940    @Override
6941    protected float getLeftFadingEdgeStrength() {
6942        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6943            if (mMarquee != null && !mMarquee.isStopped()) {
6944                final Marquee marquee = mMarquee;
6945                if (marquee.shouldDrawLeftFade()) {
6946                    return marquee.mScroll / getHorizontalFadingEdgeLength();
6947                } else {
6948                    return 0.0f;
6949                }
6950            } else if (getLineCount() == 1) {
6951                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
6952                    case Gravity.LEFT:
6953                        return 0.0f;
6954                    case Gravity.RIGHT:
6955                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
6956                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
6957                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
6958                    case Gravity.CENTER_HORIZONTAL:
6959                        return 0.0f;
6960                }
6961            }
6962        }
6963        return super.getLeftFadingEdgeStrength();
6964    }
6965
6966    @Override
6967    protected float getRightFadingEdgeStrength() {
6968        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6969            if (mMarquee != null && !mMarquee.isStopped()) {
6970                final Marquee marquee = mMarquee;
6971                return (marquee.mMaxFadeScroll - marquee.mScroll) / getHorizontalFadingEdgeLength();
6972            } else if (getLineCount() == 1) {
6973                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
6974                    case Gravity.LEFT:
6975                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
6976                                getCompoundPaddingRight();
6977                        final float lineWidth = mLayout.getLineWidth(0);
6978                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
6979                    case Gravity.RIGHT:
6980                        return 0.0f;
6981                    case Gravity.CENTER_HORIZONTAL:
6982                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
6983                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
6984                                getHorizontalFadingEdgeLength();
6985                }
6986            }
6987        }
6988        return super.getRightFadingEdgeStrength();
6989    }
6990
6991    @Override
6992    protected int computeHorizontalScrollRange() {
6993        if (mLayout != null) {
6994            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
6995                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
6996        }
6997
6998        return super.computeHorizontalScrollRange();
6999    }
7000
7001    @Override
7002    protected int computeVerticalScrollRange() {
7003        if (mLayout != null)
7004            return mLayout.getHeight();
7005
7006        return super.computeVerticalScrollRange();
7007    }
7008
7009    @Override
7010    protected int computeVerticalScrollExtent() {
7011        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
7012    }
7013
7014    public enum BufferType {
7015        NORMAL, SPANNABLE, EDITABLE,
7016    }
7017
7018    /**
7019     * Returns the TextView_textColor attribute from the
7020     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
7021     * from the TextView_textAppearance attribute, if TextView_textColor
7022     * was not set directly.
7023     */
7024    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
7025        ColorStateList colors;
7026        colors = attrs.getColorStateList(com.android.internal.R.styleable.
7027                                         TextView_textColor);
7028
7029        if (colors == null) {
7030            int ap = attrs.getResourceId(com.android.internal.R.styleable.
7031                                         TextView_textAppearance, -1);
7032            if (ap != -1) {
7033                TypedArray appearance;
7034                appearance = context.obtainStyledAttributes(ap,
7035                                            com.android.internal.R.styleable.TextAppearance);
7036                colors = appearance.getColorStateList(com.android.internal.R.styleable.
7037                                                  TextAppearance_textColor);
7038                appearance.recycle();
7039            }
7040        }
7041
7042        return colors;
7043    }
7044
7045    /**
7046     * Returns the default color from the TextView_textColor attribute
7047     * from the AttributeSet, if set, or the default color from the
7048     * TextAppearance_textColor from the TextView_textAppearance attribute,
7049     * if TextView_textColor was not set directly.
7050     */
7051    public static int getTextColor(Context context,
7052                                   TypedArray attrs,
7053                                   int def) {
7054        ColorStateList colors = getTextColors(context, attrs);
7055
7056        if (colors == null) {
7057            return def;
7058        } else {
7059            return colors.getDefaultColor();
7060        }
7061    }
7062
7063    @Override
7064    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
7065        switch (keyCode) {
7066        case KeyEvent.KEYCODE_A:
7067            if (canSelectAll()) {
7068                return onTextContextMenuItem(ID_SELECT_ALL);
7069            }
7070
7071            break;
7072
7073        case KeyEvent.KEYCODE_X:
7074            if (canCut()) {
7075                return onTextContextMenuItem(ID_CUT);
7076            }
7077
7078            break;
7079
7080        case KeyEvent.KEYCODE_C:
7081            if (canCopy()) {
7082                return onTextContextMenuItem(ID_COPY);
7083            }
7084
7085            break;
7086
7087        case KeyEvent.KEYCODE_V:
7088            if (canPaste()) {
7089                return onTextContextMenuItem(ID_PASTE);
7090            }
7091
7092            break;
7093        }
7094
7095        return super.onKeyShortcut(keyCode, event);
7096    }
7097
7098    private boolean canSelectAll() {
7099        return canSelectText() && mText.length() != 0;
7100    }
7101
7102    private boolean canSelectText() {
7103        // prepareCursorController() relies on this method.
7104        // If you change this condition, make sure prepareCursorController is called anywhere
7105        // the value of this condition might be changed.
7106        return (mText instanceof Spannable &&
7107                mMovement != null &&
7108                mMovement.canSelectArbitrarily());
7109    }
7110
7111    private boolean canCut() {
7112        if (mTransformation instanceof PasswordTransformationMethod) {
7113            return false;
7114        }
7115
7116        if (mText.length() > 0 && hasSelection()) {
7117            if (mText instanceof Editable && mInput != null) {
7118                return true;
7119            }
7120        }
7121
7122        return false;
7123    }
7124
7125    private boolean canCopy() {
7126        if (mTransformation instanceof PasswordTransformationMethod) {
7127            return false;
7128        }
7129
7130        if (mText.length() > 0 && hasSelection()) {
7131            return true;
7132        }
7133
7134        return false;
7135    }
7136
7137    private boolean canPaste() {
7138        return (mText instanceof Editable &&
7139                mInput != null &&
7140                getSelectionStart() >= 0 &&
7141                getSelectionEnd() >= 0 &&
7142                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
7143                hasPrimaryClip());
7144    }
7145
7146    /**
7147     * Returns the offsets delimiting the 'word' located at position offset.
7148     *
7149     * @param offset An offset in the text.
7150     * @return The offsets for the start and end of the word located at <code>offset</code>.
7151     * The two ints offsets are packed in a long, with the starting offset shifted by 32 bits.
7152     * Returns a negative value if no valid word was found.
7153     */
7154    private long getWordLimitsAt(int offset) {
7155        /*
7156         * Quick return if the input type is one where adding words
7157         * to the dictionary doesn't make any sense.
7158         */
7159        int klass = mInputType & InputType.TYPE_MASK_CLASS;
7160        if (klass == InputType.TYPE_CLASS_NUMBER ||
7161            klass == InputType.TYPE_CLASS_PHONE ||
7162            klass == InputType.TYPE_CLASS_DATETIME) {
7163            return -1;
7164        }
7165
7166        int variation = mInputType & InputType.TYPE_MASK_VARIATION;
7167        if (variation == InputType.TYPE_TEXT_VARIATION_URI ||
7168            variation == InputType.TYPE_TEXT_VARIATION_PASSWORD ||
7169            variation == InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD ||
7170            variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS ||
7171            variation == InputType.TYPE_TEXT_VARIATION_FILTER) {
7172            return -1;
7173        }
7174
7175        int len = mText.length();
7176        int end = Math.min(offset, len);
7177
7178        if (end < 0) {
7179            return -1;
7180        }
7181
7182        int start = end;
7183
7184        for (; start > 0; start--) {
7185            char c = mTransformed.charAt(start - 1);
7186            int type = Character.getType(c);
7187
7188            if (c != '\'' &&
7189                type != Character.UPPERCASE_LETTER &&
7190                type != Character.LOWERCASE_LETTER &&
7191                type != Character.TITLECASE_LETTER &&
7192                type != Character.MODIFIER_LETTER &&
7193                type != Character.DECIMAL_DIGIT_NUMBER) {
7194                break;
7195            }
7196        }
7197
7198        for (; end < len; end++) {
7199            char c = mTransformed.charAt(end);
7200            int type = Character.getType(c);
7201
7202            if (c != '\'' &&
7203                type != Character.UPPERCASE_LETTER &&
7204                type != Character.LOWERCASE_LETTER &&
7205                type != Character.TITLECASE_LETTER &&
7206                type != Character.MODIFIER_LETTER &&
7207                type != Character.DECIMAL_DIGIT_NUMBER) {
7208                break;
7209            }
7210        }
7211
7212        if (start == end) {
7213            return -1;
7214        }
7215
7216        if (end - start > 48) {
7217            return -1;
7218        }
7219
7220        boolean hasLetter = false;
7221        for (int i = start; i < end; i++) {
7222            if (Character.isLetter(mTransformed.charAt(i))) {
7223                hasLetter = true;
7224                break;
7225            }
7226        }
7227
7228        if (!hasLetter) {
7229            return -1;
7230        }
7231
7232        // Two ints packed in a long
7233        return (((long) start) << 32) | end;
7234    }
7235
7236    private void selectCurrentWord() {
7237        // In case selection mode is started after an orientation change or after a select all,
7238        // use the current selection instead of creating one
7239        if (hasSelection()) {
7240            return;
7241        }
7242
7243        int selectionStart, selectionEnd;
7244
7245        // selectionModifierCursorController is not null at that point
7246        SelectionModifierCursorController selectionModifierCursorController =
7247            ((SelectionModifierCursorController) mSelectionModifierCursorController);
7248        int minOffset = selectionModifierCursorController.getMinTouchOffset();
7249        int maxOffset = selectionModifierCursorController.getMaxTouchOffset();
7250
7251        if (minOffset == maxOffset) {
7252            int offset = Math.max(0, Math.min(minOffset, mTransformed.length()));
7253
7254            // Tolerance, number of charaters around tapped position
7255            final int range = 1;
7256            final int max = mTransformed.length() - 1;
7257
7258            // 'Smart' word selection: detect position between words
7259            for (int i = -range; i <= range; i++) {
7260                int index = offset + i;
7261                if (index >= 0 && index <= max) {
7262                    if (Character.isSpaceChar(mTransformed.charAt(index))) {
7263                        // Select current space
7264                        selectionStart = index;
7265                        selectionEnd = selectionStart + 1;
7266
7267                        // Extend selection to maximum space range
7268                        while (selectionStart > 0 &&
7269                                Character.isSpaceChar(mTransformed.charAt(selectionStart - 1))) {
7270                            selectionStart--;
7271                        }
7272                        while (selectionEnd < max &&
7273                                Character.isSpaceChar(mTransformed.charAt(selectionEnd))) {
7274                            selectionEnd++;
7275                        }
7276
7277                        Selection.setSelection((Spannable) mText, selectionStart, selectionEnd);
7278                        return;
7279                    }
7280                }
7281            }
7282
7283            // 'Smart' word selection: detect position at beginning or end of text.
7284            if (offset <= range) {
7285                Selection.setSelection((Spannable) mText, 0, 0);
7286                return;
7287            }
7288            if (offset >= (max - range)) {
7289                Selection.setSelection((Spannable) mText, max + 1, max + 1);
7290                return;
7291            }
7292        }
7293
7294        long wordLimits = getWordLimitsAt(minOffset);
7295        if (wordLimits >= 0) {
7296            selectionStart = (int) (wordLimits >>> 32);
7297        } else {
7298            selectionStart = Math.max(minOffset - 5, 0);
7299        }
7300
7301        wordLimits = getWordLimitsAt(maxOffset);
7302        if (wordLimits >= 0) {
7303            selectionEnd = (int) (wordLimits & 0x00000000FFFFFFFFL);
7304        } else {
7305            selectionEnd = Math.min(maxOffset + 5, mText.length());
7306        }
7307
7308        Selection.setSelection((Spannable) mText, selectionStart, selectionEnd);
7309    }
7310
7311    @Override
7312    public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
7313        if (!isShown()) {
7314            return false;
7315        }
7316
7317        final boolean isPassword = isPasswordInputType(mInputType);
7318
7319        if (!isPassword) {
7320            CharSequence text = getText();
7321            if (TextUtils.isEmpty(text)) {
7322                text = getHint();
7323            }
7324            if (!TextUtils.isEmpty(text)) {
7325                if (text.length() > AccessibilityEvent.MAX_TEXT_LENGTH) {
7326                    text = text.subSequence(0, AccessibilityEvent.MAX_TEXT_LENGTH + 1);
7327                }
7328                event.getText().add(text);
7329            }
7330        } else {
7331            event.setPassword(isPassword);
7332        }
7333        return false;
7334    }
7335
7336    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
7337            int fromIndex, int removedCount, int addedCount) {
7338        AccessibilityEvent event =
7339            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
7340        event.setFromIndex(fromIndex);
7341        event.setRemovedCount(removedCount);
7342        event.setAddedCount(addedCount);
7343        event.setBeforeText(beforeText);
7344        sendAccessibilityEventUnchecked(event);
7345    }
7346
7347    @Override
7348    protected void onCreateContextMenu(ContextMenu menu) {
7349        super.onCreateContextMenu(menu);
7350        boolean added = false;
7351
7352        MenuHandler handler = new MenuHandler();
7353
7354        if (mText instanceof Spanned) {
7355            int selStart = getSelectionStart();
7356            int selEnd = getSelectionEnd();
7357
7358            int min = Math.min(selStart, selEnd);
7359            int max = Math.max(selStart, selEnd);
7360
7361            URLSpan[] urls = ((Spanned) mText).getSpans(min, max,
7362                                                        URLSpan.class);
7363            if (urls.length == 1) {
7364                menu.add(0, ID_COPY_URL, 0,
7365                         com.android.internal.R.string.copyUrl).
7366                            setOnMenuItemClickListener(handler);
7367
7368                added = true;
7369            }
7370        }
7371
7372        // The context menu is not empty, which will prevent the selection mode from starting.
7373        // Add a entry to start it in the context menu.
7374        // TODO Does not handle the case where a subclass does not call super.thisMethod or
7375        // populates the menu AFTER this call.
7376        if (menu.size() > 0) {
7377            menu.add(0, ID_SELECTION_MODE, 0, com.android.internal.R.string.selectTextMode).
7378            setOnMenuItemClickListener(handler);
7379            added = true;
7380        }
7381
7382        if (added) {
7383            menu.setHeaderTitle(com.android.internal.R.string.editTextMenuTitle);
7384        }
7385    }
7386
7387    /**
7388     * Returns whether this text view is a current input method target.  The
7389     * default implementation just checks with {@link InputMethodManager}.
7390     */
7391    public boolean isInputMethodTarget() {
7392        InputMethodManager imm = InputMethodManager.peekInstance();
7393        return imm != null && imm.isActive(this);
7394    }
7395
7396    // Selection context mode
7397    private static final int ID_SELECT_ALL = android.R.id.selectAll;
7398    private static final int ID_CUT = android.R.id.cut;
7399    private static final int ID_COPY = android.R.id.copy;
7400    private static final int ID_PASTE = android.R.id.paste;
7401    // Context menu entries
7402    private static final int ID_COPY_URL = android.R.id.copyUrl;
7403    private static final int ID_SELECTION_MODE = android.R.id.selectTextMode;
7404
7405    private class MenuHandler implements MenuItem.OnMenuItemClickListener {
7406        public boolean onMenuItemClick(MenuItem item) {
7407            return onTextContextMenuItem(item.getItemId());
7408        }
7409    }
7410
7411    /**
7412     * Called when a context menu option for the text view is selected.  Currently
7413     * this will be {@link android.R.id#copyUrl} or {@link android.R.id#selectTextMode}.
7414     */
7415    public boolean onTextContextMenuItem(int id) {
7416        int min = 0;
7417        int max = mText.length();
7418
7419        if (isFocused()) {
7420            final int selStart = getSelectionStart();
7421            final int selEnd = getSelectionEnd();
7422
7423            min = Math.max(0, Math.min(selStart, selEnd));
7424            max = Math.max(0, Math.max(selStart, selEnd));
7425        }
7426
7427        ClipboardManager clipboard = (ClipboardManager)getContext()
7428                .getSystemService(Context.CLIPBOARD_SERVICE);
7429
7430        switch (id) {
7431            case ID_COPY_URL:
7432
7433                URLSpan[] urls = ((Spanned) mText).getSpans(min, max, URLSpan.class);
7434                if (urls.length >= 1) {
7435                    ClipData clip = null;
7436                    for (int i=0; i<urls.length; i++) {
7437                        Uri uri = Uri.parse(urls[0].getURL());
7438                        if (clip == null) {
7439                            clip = ClipData.newRawUri(null, null, uri);
7440                        } else {
7441                            clip.addItem(new ClipData.Item(uri));
7442                        }
7443                    }
7444                    if (clip != null) {
7445                        clipboard.setPrimaryClip(clip);
7446                    }
7447                }
7448                return true;
7449
7450            case ID_SELECTION_MODE:
7451                startSelectionActionMode();
7452                return true;
7453            }
7454
7455        return false;
7456    }
7457
7458    @Override
7459    public boolean performLongClick() {
7460        if (super.performLongClick()) {
7461            mEatTouchRelease = true;
7462            return true;
7463        }
7464
7465        if (startSelectionActionMode()) {
7466            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
7467            mEatTouchRelease = true;
7468            return true;
7469        }
7470
7471        return false;
7472    }
7473
7474    private boolean touchPositionIsInSelection() {
7475        int selectionStart = getSelectionStart();
7476        int selectionEnd = getSelectionEnd();
7477
7478        if (selectionStart == selectionEnd) {
7479            return false;
7480        }
7481
7482        if (selectionStart > selectionEnd) {
7483            int tmp = selectionStart;
7484            selectionStart = selectionEnd;
7485            selectionEnd = tmp;
7486            Selection.setSelection((Spannable) mText, selectionStart, selectionEnd);
7487        }
7488
7489        SelectionModifierCursorController selectionModifierCursorController =
7490            ((SelectionModifierCursorController) mSelectionModifierCursorController);
7491        int minOffset = selectionModifierCursorController.getMinTouchOffset();
7492        int maxOffset = selectionModifierCursorController.getMaxTouchOffset();
7493
7494        return ((minOffset >= selectionStart) && (maxOffset < selectionEnd));
7495    }
7496
7497    /**
7498     * Provides the callback used to start a selection action mode.
7499     *
7500     * @return A callback instance that will be used to start selection mode, or null if selection
7501     * mode is not available.
7502     */
7503    private ActionMode.Callback getActionModeCallback() {
7504        // Long press in the current selection.
7505        // Should initiate a drag. Return false, to rely on context menu for now.
7506        if (canSelectText() && !touchPositionIsInSelection()) {
7507            return new SelectionActionModeCallback();
7508        }
7509        return null;
7510    }
7511
7512    /**
7513     *
7514     * @return true if the selection mode was actually started.
7515     */
7516    private boolean startSelectionActionMode() {
7517        if (mSelectionActionMode != null) {
7518            // Selection action mode is already started
7519            return false;
7520        }
7521
7522        ActionMode.Callback actionModeCallback = getActionModeCallback();
7523        if (actionModeCallback != null) {
7524            mSelectionActionMode = startActionMode(actionModeCallback);
7525            return mSelectionActionMode != null;
7526        }
7527
7528        return false;
7529    }
7530
7531    /**
7532     * Same as {@link #stopSelectionActionMode()}, except that there is no cursor controller
7533     * fade out animation. Needed since the drawable and their alpha values are shared by all
7534     * TextViews. Switching from one TextView to another would fade the cursor controllers in the
7535     * new one otherwise.
7536     */
7537    private void terminateSelectionActionMode() {
7538        stopSelectionActionMode();
7539        if (mSelectionModifierCursorController != null) {
7540            SelectionModifierCursorController selectionModifierCursorController =
7541                (SelectionModifierCursorController) mSelectionModifierCursorController;
7542            selectionModifierCursorController.cancelFadeOutAnimation();
7543        }
7544    }
7545
7546    private void stopSelectionActionMode() {
7547        if (mSelectionActionMode != null) {
7548            mSelectionActionMode.finish();
7549        }
7550    }
7551
7552    private class SelectionActionModeCallback implements ActionMode.Callback {
7553
7554        @Override
7555        public boolean onCreateActionMode(ActionMode mode, Menu menu) {
7556            if (mSelectionModifierCursorController == null) {
7557                Log.w(LOG_TAG, "TextView has no selection controller. Action mode cancelled.");
7558                return false;
7559            }
7560
7561            if (!requestFocus()) {
7562                return false;
7563            }
7564
7565            mode.setTitle(mContext.getString(com.android.internal.R.string.textSelectionCABTitle));
7566            mode.setSubtitle(null);
7567
7568            selectCurrentWord();
7569
7570            boolean atLeastOne = false;
7571
7572            if (canSelectAll()) {
7573                menu.add(0, ID_SELECT_ALL, 0, com.android.internal.R.string.selectAll).
7574                    setIcon(com.android.internal.R.drawable.ic_menu_chat_dashboard).
7575                    setAlphabeticShortcut('a');
7576                atLeastOne = true;
7577            }
7578
7579            if (canCut()) {
7580                menu.add(0, ID_CUT, 0, com.android.internal.R.string.cut).
7581                    setIcon(com.android.internal.R.drawable.ic_menu_compose).
7582                    setAlphabeticShortcut('x');
7583                atLeastOne = true;
7584            }
7585
7586            if (canCopy()) {
7587                menu.add(0, ID_COPY, 0, com.android.internal.R.string.copy).
7588                    setIcon(com.android.internal.R.drawable.ic_menu_attachment).
7589                    setAlphabeticShortcut('c');
7590                atLeastOne = true;
7591            }
7592
7593            if (canPaste()) {
7594                menu.add(0, ID_PASTE, 0, com.android.internal.R.string.paste).
7595                        setIcon(com.android.internal.R.drawable.ic_menu_camera).
7596                        setAlphabeticShortcut('v');
7597                atLeastOne = true;
7598            }
7599
7600            if (atLeastOne) {
7601                mSelectionModifierCursorController.show();
7602                return true;
7603            } else {
7604                return false;
7605            }
7606        }
7607
7608        @Override
7609        public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
7610            return true;
7611        }
7612
7613        @Override
7614        public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
7615            final int itemId = item.getItemId();
7616
7617            if (itemId == ID_SELECT_ALL) {
7618                Selection.setSelection((Spannable) mText, 0, mText.length());
7619                // Update controller positions after selection change.
7620                if (mSelectionModifierCursorController != null) {
7621                    mSelectionModifierCursorController.show();
7622                }
7623                return true;
7624            }
7625
7626            ClipboardManager clipboard = (ClipboardManager) getContext().
7627                    getSystemService(Context.CLIPBOARD_SERVICE);
7628
7629            int min = 0;
7630            int max = mText.length();
7631
7632            if (isFocused()) {
7633                final int selStart = getSelectionStart();
7634                final int selEnd = getSelectionEnd();
7635
7636                min = Math.max(0, Math.min(selStart, selEnd));
7637                max = Math.max(0, Math.max(selStart, selEnd));
7638            }
7639
7640            switch (item.getItemId()) {
7641                case ID_PASTE:
7642                    ClipData clip = clipboard.getPrimaryClip();
7643                    if (clip != null) {
7644                        boolean didfirst = false;
7645                        for (int i=0; i<clip.getItemCount(); i++) {
7646                            CharSequence paste = clip.getItem(i).coerceToText(getContext());
7647                            if (paste != null) {
7648                                if (!didfirst) {
7649                                    Selection.setSelection((Spannable) mText, max);
7650                                    ((Editable) mText).replace(min, max, paste);
7651                                } else {
7652                                    ((Editable) mText).insert(getSelectionEnd(), "\n");
7653                                    ((Editable) mText).insert(getSelectionEnd(), paste);
7654                                }
7655                            }
7656                        }
7657                        stopSelectionActionMode();
7658                    }
7659
7660                    return true;
7661
7662                case ID_CUT:
7663                    clipboard.setPrimaryClip(ClipData.newPlainText(null, null,
7664                            mTransformed.subSequence(min, max)));
7665                    ((Editable) mText).delete(min, max);
7666                    stopSelectionActionMode();
7667                    return true;
7668
7669                case ID_COPY:
7670                    clipboard.setPrimaryClip(ClipData.newPlainText(null, null,
7671                            mTransformed.subSequence(min, max)));
7672                    stopSelectionActionMode();
7673                    return true;
7674            }
7675
7676            return false;
7677        }
7678
7679        @Override
7680        public void onDestroyActionMode(ActionMode mode) {
7681            Selection.setSelection((Spannable) mText, getSelectionStart());
7682            if (mSelectionModifierCursorController != null) {
7683                mSelectionModifierCursorController.hide();
7684            }
7685            mSelectionActionMode = null;
7686        }
7687    }
7688
7689    /**
7690     * A CursorController instance can be used to control a cursor in the text.
7691     * It is not used outside of {@link TextView}.
7692     * @hide
7693     */
7694    private interface CursorController {
7695        /**
7696         * Makes the cursor controller visible on screen. Will be drawn by {@link #draw(Canvas)}.
7697         * See also {@link #hide()}.
7698         */
7699        public void show();
7700
7701        /**
7702         * Hide the cursor controller from screen.
7703         * See also {@link #show()}.
7704         */
7705        public void hide();
7706
7707        /**
7708         * @return true if the CursorController is currently visible
7709         */
7710        public boolean isShowing();
7711
7712        /**
7713         * Update the controller's position.
7714         */
7715        public void updatePosition(HandleView handle, int x, int y);
7716
7717        public void updatePosition();
7718
7719        /**
7720         * This method is called by {@link #onTouchEvent(MotionEvent)} and gives the controller
7721         * a chance to become active and/or visible.
7722         * @param event The touch event
7723         */
7724        public boolean onTouchEvent(MotionEvent event);
7725    }
7726
7727    private class HandleView extends View {
7728        private boolean mPositionOnTop = false;
7729        private Drawable mDrawable;
7730        private PopupWindow mContainer;
7731        private int mPositionX;
7732        private int mPositionY;
7733        private CursorController mController;
7734        private boolean mIsDragging;
7735
7736        public HandleView(CursorController controller, Drawable handle) {
7737            super(TextView.this.mContext);
7738            mController = controller;
7739            mDrawable = handle;
7740            mContainer = new PopupWindow(TextView.this.mContext, null,
7741                    com.android.internal.R.attr.textSelectHandleWindowStyle);
7742            mContainer.setSplitTouchEnabled(true);
7743        }
7744
7745        @Override
7746        public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
7747            setMeasuredDimension(mDrawable.getIntrinsicWidth(),
7748                    mDrawable.getIntrinsicHeight());
7749        }
7750
7751        public void show() {
7752            if (!isPositionInBounds()) {
7753                hide();
7754                return;
7755            }
7756            mContainer.setContentView(this);
7757            final int[] coords = mTempCoords;
7758            TextView.this.getLocationOnScreen(coords);
7759            coords[0] += mPositionX;
7760            coords[1] += mPositionY;
7761            mContainer.showAtLocation(TextView.this, 0, coords[0], coords[1]);
7762        }
7763
7764        public void hide() {
7765            mIsDragging = false;
7766            mContainer.dismiss();
7767        }
7768
7769        public boolean isShowing() {
7770            return mContainer.isShowing();
7771        }
7772
7773        private boolean isPositionInBounds() {
7774            final int extendedPaddingTop = getExtendedPaddingTop();
7775            final int extendedPaddingBottom = getExtendedPaddingBottom();
7776            final int compoundPaddingLeft = getCompoundPaddingLeft();
7777            final int compoundPaddingRight = getCompoundPaddingRight();
7778
7779            final TextView hostView = TextView.this;
7780            final int right = hostView.mRight;
7781            final int left = hostView.mLeft;
7782            final int bottom = hostView.mBottom;
7783            final int top = hostView.mTop;
7784
7785            final int clipLeft = left + compoundPaddingLeft;
7786            final int clipTop = top + extendedPaddingTop;
7787            final int clipRight = right - compoundPaddingRight;
7788            final int clipBottom = bottom - extendedPaddingBottom;
7789
7790            final int handleWidth = mDrawable.getIntrinsicWidth();
7791            return mPositionX >= clipLeft - handleWidth * 0.75f &&
7792                    mPositionX <= clipRight + handleWidth * 0.25f &&
7793                    mPositionY >= clipTop && mPositionY <= clipBottom;
7794        }
7795
7796        private void moveTo(int x, int y) {
7797            mPositionX = x - TextView.this.mScrollX;
7798            mPositionY = y - TextView.this.mScrollY;
7799            if (isPositionInBounds()) {
7800                if (mContainer.isShowing()){
7801                    final int[] coords = mTempCoords;
7802                    TextView.this.getLocationOnScreen(coords);
7803                    coords[0] += mPositionX;
7804                    coords[1] += mPositionY;
7805                    mContainer.update(coords[0], coords[1], mRight - mLeft, mBottom - mTop);
7806                } else {
7807                    show();
7808                }
7809            } else {
7810                hide();
7811            }
7812        }
7813
7814        @Override
7815        public void onDraw(Canvas c) {
7816            mDrawable.setBounds(0, 0, mRight - mLeft, mBottom - mTop);
7817            if (mPositionOnTop) {
7818                c.save();
7819                c.rotate(180, (mRight - mLeft) / 2, (mBottom - mTop) / 2);
7820                mDrawable.draw(c);
7821                c.restore();
7822            } else {
7823                mDrawable.draw(c);
7824            }
7825        }
7826
7827        @Override
7828        public boolean onTouchEvent(MotionEvent ev) {
7829            switch (ev.getActionMasked()) {
7830            case MotionEvent.ACTION_DOWN:
7831                mIsDragging = true;
7832                break;
7833
7834            case MotionEvent.ACTION_MOVE:
7835                final float rawX = ev.getRawX();
7836                final float rawY = ev.getRawY();
7837                final int[] coords = mTempCoords;
7838                TextView.this.getLocationOnScreen(coords);
7839                final int x = (int) (rawX - coords[0] + 0.5f);
7840                final int y = (int) (rawY - coords[1] + 0.5f);
7841                mController.updatePosition(this, x, y);
7842                break;
7843
7844            case MotionEvent.ACTION_UP:
7845            case MotionEvent.ACTION_CANCEL:
7846                mIsDragging = false;
7847            }
7848            return true;
7849        }
7850
7851        public boolean isDragging() {
7852            return mIsDragging;
7853        }
7854
7855        void positionAtCursor(final int offset, boolean bottom) {
7856            final int width = mDrawable.getIntrinsicWidth();
7857            final int height = mDrawable.getIntrinsicHeight();
7858            final int line = mLayout.getLineForOffset(offset);
7859            final int lineTop = mLayout.getLineTop(line);
7860            final int lineBottom = mLayout.getLineBottom(line);
7861
7862            final Rect bounds = sCursorControllerTempRect;
7863            bounds.left = (int) (mLayout.getPrimaryHorizontal(offset) - width / 2.0)
7864                + TextView.this.mScrollX;
7865            bounds.top = (bottom ? lineBottom : lineTop) + TextView.this.mScrollY;
7866
7867            bounds.right = bounds.left + width;
7868            bounds.bottom = bounds.top + height;
7869
7870            convertFromViewportToContentCoordinates(bounds);
7871            moveTo(bounds.left, bounds.top);
7872        }
7873    }
7874
7875    private class InsertionPointCursorController implements CursorController {
7876        private static final int DELAY_BEFORE_FADE_OUT = 4100;
7877
7878        // The cursor controller image
7879        private final HandleView mHandle;
7880
7881        private final Runnable mHider = new Runnable() {
7882            public void run() {
7883                hide();
7884            }
7885        };
7886
7887        InsertionPointCursorController() {
7888            Resources res = mContext.getResources();
7889            mHandle = new HandleView(this, res.getDrawable(mTextSelectHandleRes));
7890        }
7891
7892        public void show() {
7893            updatePosition();
7894            mHandle.show();
7895            hideDelayed(DELAY_BEFORE_FADE_OUT);
7896        }
7897
7898        public void hide() {
7899            mHandle.hide();
7900            TextView.this.removeCallbacks(mHider);
7901        }
7902
7903        private void hideDelayed(int msec) {
7904            TextView.this.removeCallbacks(mHider);
7905            TextView.this.postDelayed(mHider, msec);
7906        }
7907
7908        public boolean isShowing() {
7909            return mHandle.isShowing();
7910        }
7911
7912        public void updatePosition(HandleView handle, int x, int y) {
7913            final int previousOffset = getSelectionStart();
7914            int offset = getHysteresisOffset(x, y, previousOffset);
7915
7916            if (offset != previousOffset) {
7917                Selection.setSelection((Spannable) mText, offset);
7918                updatePosition();
7919            }
7920            hideDelayed(DELAY_BEFORE_FADE_OUT);
7921        }
7922
7923        public void updatePosition() {
7924            final int offset = getSelectionStart();
7925
7926            if (offset < 0) {
7927                // Should never happen, safety check.
7928                Log.w(LOG_TAG, "Update cursor controller position called with no cursor");
7929                hide();
7930                return;
7931            }
7932
7933            mHandle.positionAtCursor(offset, true);
7934        }
7935
7936        public boolean onTouchEvent(MotionEvent ev) {
7937            return false;
7938        }
7939    }
7940
7941    private class SelectionModifierCursorController implements CursorController {
7942        // The cursor controller images
7943        private HandleView mStartHandle, mEndHandle;
7944        // The offsets of that last touch down event. Remembered to start selection there.
7945        private int mMinTouchOffset, mMaxTouchOffset;
7946        // Whether selection anchors are active
7947        private boolean mIsShowing;
7948
7949        SelectionModifierCursorController() {
7950            Resources res = mContext.getResources();
7951            mStartHandle = new HandleView(this, res.getDrawable(mTextSelectHandleLeftRes));
7952            mEndHandle = new HandleView(this, res.getDrawable(mTextSelectHandleRightRes));
7953        }
7954
7955        public void show() {
7956            mIsShowing = true;
7957            updatePosition();
7958            mStartHandle.show();
7959            mEndHandle.show();
7960            hideInsertionPointCursorController();
7961        }
7962
7963        public void hide() {
7964            mStartHandle.hide();
7965            mEndHandle.hide();
7966            mIsShowing = false;
7967        }
7968
7969        public boolean isShowing() {
7970            return mIsShowing;
7971        }
7972
7973        public void cancelFadeOutAnimation() {
7974            hide();
7975        }
7976
7977        public void updatePosition(HandleView handle, int x, int y) {
7978            int selectionStart = getSelectionStart();
7979            int selectionEnd = getSelectionEnd();
7980
7981            final int previousOffset = handle == mStartHandle ? selectionStart : selectionEnd;
7982            int offset = getHysteresisOffset(x, y, previousOffset);
7983
7984            // Handle the case where start and end are swapped, making sure start <= end
7985            if (handle == mStartHandle) {
7986                if (offset <= selectionEnd) {
7987                    if (selectionStart == offset) {
7988                        return; // no change, no need to redraw;
7989                    }
7990                    selectionStart = offset;
7991                } else {
7992                    selectionStart = selectionEnd;
7993                    selectionEnd = offset;
7994                    HandleView temp = mStartHandle;
7995                    mStartHandle = mEndHandle;
7996                    mEndHandle = temp;
7997                }
7998            } else {
7999                if (offset >= selectionStart) {
8000                    if (selectionEnd == offset) {
8001                        return; // no change, no need to redraw;
8002                    }
8003                    selectionEnd = offset;
8004                } else {
8005                    selectionEnd = selectionStart;
8006                    selectionStart = offset;
8007                    HandleView temp = mStartHandle;
8008                    mStartHandle = mEndHandle;
8009                    mEndHandle = temp;
8010                }
8011            }
8012
8013            Selection.setSelection((Spannable) mText, selectionStart, selectionEnd);
8014            updatePosition();
8015        }
8016
8017        public void updatePosition() {
8018            final int selectionStart = getSelectionStart();
8019            final int selectionEnd = getSelectionEnd();
8020
8021            if ((selectionStart < 0) || (selectionEnd < 0)) {
8022                // Should never happen, safety check.
8023                Log.w(LOG_TAG, "Update selection controller position called with no cursor");
8024                hide();
8025                return;
8026            }
8027
8028            boolean oneLineSelection = mLayout.getLineForOffset(selectionStart) ==
8029                    mLayout.getLineForOffset(selectionEnd);
8030            mStartHandle.positionAtCursor(selectionStart, oneLineSelection);
8031            mEndHandle.positionAtCursor(selectionEnd, true);
8032        }
8033
8034        public boolean onTouchEvent(MotionEvent event) {
8035            if (isFocused() && isTextEditable()) {
8036                switch (event.getActionMasked()) {
8037                    case MotionEvent.ACTION_DOWN:
8038                        final int x = (int) event.getX();
8039                        final int y = (int) event.getY();
8040
8041                        // Remember finger down position, to be able to start selection from there
8042                        mMinTouchOffset = mMaxTouchOffset = mLastTouchOffset = getOffset(x, y);
8043
8044                        break;
8045
8046                    case MotionEvent.ACTION_POINTER_DOWN:
8047                    case MotionEvent.ACTION_POINTER_UP:
8048                        // Handle multi-point gestures. Keep min and max offset positions.
8049                        // Only activated for devices that correctly handle multi-touch.
8050                        if (mContext.getPackageManager().hasSystemFeature(
8051                                PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) {
8052                            updateMinAndMaxOffsets(event);
8053                        }
8054                        break;
8055                }
8056            }
8057            return false;
8058        }
8059
8060        /**
8061         * @param event
8062         */
8063        private void updateMinAndMaxOffsets(MotionEvent event) {
8064            int pointerCount = event.getPointerCount();
8065            for (int index = 0; index < pointerCount; index++) {
8066                final int x = (int) event.getX(index);
8067                final int y = (int) event.getY(index);
8068                int offset = getOffset(x, y);
8069                if (offset < mMinTouchOffset) mMinTouchOffset = offset;
8070                if (offset > mMaxTouchOffset) mMaxTouchOffset = offset;
8071            }
8072        }
8073
8074        public int getMinTouchOffset() {
8075            return mMinTouchOffset;
8076        }
8077
8078        public int getMaxTouchOffset() {
8079            return mMaxTouchOffset;
8080        }
8081
8082        /**
8083         * @return true iff this controller is currently used to move the selection start.
8084         */
8085        public boolean isSelectionStartDragged() {
8086            return mStartHandle.isDragging();
8087        }
8088    }
8089
8090    private void hideInsertionPointCursorController() {
8091        if (mInsertionPointCursorController != null) {
8092            mInsertionPointCursorController.hide();
8093        }
8094    }
8095
8096    private void hideControllers() {
8097        hideInsertionPointCursorController();
8098        stopSelectionActionMode();
8099    }
8100
8101    private int getOffsetForHorizontal(int line, int x) {
8102        x -= getTotalPaddingLeft();
8103        // Clamp the position to inside of the view.
8104        x = Math.max(0, x);
8105        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
8106        x += getScrollX();
8107        return getLayout().getOffsetForHorizontal(line, x);
8108    }
8109
8110    /**
8111     * Get the offset character closest to the specified absolute position.
8112     *
8113     * @param x The horizontal absolute position of a point on screen
8114     * @param y The vertical absolute position of a point on screen
8115     * @return the character offset for the character whose position is closest to the specified
8116     *  position. Returns -1 if there is no layout.
8117     *
8118     * @hide
8119     */
8120    public int getOffset(int x, int y) {
8121        if (getLayout() == null) return -1;
8122
8123        y -= getTotalPaddingTop();
8124        // Clamp the position to inside of the view.
8125        y = Math.max(0, y);
8126        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
8127        y += getScrollY();
8128
8129        final int line = getLayout().getLineForVertical(y);
8130        final int offset = getOffsetForHorizontal(line, x);
8131        return offset;
8132    }
8133
8134    int getHysteresisOffset(int x, int y, int previousOffset) {
8135        final Layout layout = getLayout();
8136        if (layout == null) return -1;
8137
8138        y -= getTotalPaddingTop();
8139        // Clamp the position to inside of the view.
8140        y = Math.max(0, y);
8141        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
8142        y += getScrollY();
8143
8144        int line = getLayout().getLineForVertical(y);
8145
8146        final int previousLine = layout.getLineForOffset(previousOffset);
8147        final int previousLineTop = layout.getLineTop(previousLine);
8148        final int previousLineBottom = layout.getLineBottom(previousLine);
8149        final int hysteresisThreshold = (previousLineBottom - previousLineTop) / 2;
8150
8151        // If new line is just before or after previous line and y position is less than
8152        // hysteresisThreshold away from previous line, keep cursor on previous line.
8153        if (((line == previousLine + 1) && ((y - previousLineBottom) < hysteresisThreshold)) ||
8154            ((line == previousLine - 1) && ((previousLineTop - y)    < hysteresisThreshold))) {
8155            line = previousLine;
8156        }
8157
8158        return getOffsetForHorizontal(line, x);
8159    }
8160
8161
8162    @ViewDebug.ExportedProperty(category = "text")
8163    private CharSequence            mText;
8164    private CharSequence            mTransformed;
8165    private BufferType              mBufferType = BufferType.NORMAL;
8166
8167    private int                     mInputType = EditorInfo.TYPE_NULL;
8168    private CharSequence            mHint;
8169    private Layout                  mHintLayout;
8170
8171    private KeyListener             mInput;
8172
8173    private MovementMethod          mMovement;
8174    private TransformationMethod    mTransformation;
8175    private ChangeWatcher           mChangeWatcher;
8176
8177    private ArrayList<TextWatcher>  mListeners = null;
8178
8179    // display attributes
8180    private final TextPaint         mTextPaint;
8181    private boolean                 mUserSetTextScaleX;
8182    private final Paint             mHighlightPaint;
8183    private int                     mHighlightColor = 0xCC475925;
8184    private Layout                  mLayout;
8185
8186    private long                    mShowCursor;
8187    private Blink                   mBlink;
8188    private boolean                 mCursorVisible = true;
8189
8190    // Cursor Controllers. Null when disabled.
8191    private CursorController        mInsertionPointCursorController;
8192    private CursorController        mSelectionModifierCursorController;
8193    private ActionMode              mSelectionActionMode;
8194    private int                     mLastTouchOffset = -1;
8195    // Created once and shared by different CursorController helper methods.
8196    // Only one cursor controller is active at any time which prevent race conditions.
8197    private static Rect             sCursorControllerTempRect = new Rect();
8198
8199    private boolean                 mSelectAllOnFocus = false;
8200
8201    private int                     mGravity = Gravity.TOP | Gravity.LEFT;
8202    private boolean                 mHorizontallyScrolling;
8203
8204    private int                     mAutoLinkMask;
8205    private boolean                 mLinksClickable = true;
8206
8207    private float                   mSpacingMult = 1;
8208    private float                   mSpacingAdd = 0;
8209
8210    private static final int        LINES = 1;
8211    private static final int        EMS = LINES;
8212    private static final int        PIXELS = 2;
8213
8214    private int                     mMaximum = Integer.MAX_VALUE;
8215    private int                     mMaxMode = LINES;
8216    private int                     mMinimum = 0;
8217    private int                     mMinMode = LINES;
8218
8219    private int                     mMaxWidth = Integer.MAX_VALUE;
8220    private int                     mMaxWidthMode = PIXELS;
8221    private int                     mMinWidth = 0;
8222    private int                     mMinWidthMode = PIXELS;
8223
8224    private boolean                 mSingleLine;
8225    private int                     mDesiredHeightAtMeasure = -1;
8226    private boolean                 mIncludePad = true;
8227
8228    // tmp primitives, so we don't alloc them on each draw
8229    private Path                    mHighlightPath;
8230    private boolean                 mHighlightPathBogus = true;
8231    private static final RectF      sTempRect = new RectF();
8232
8233    // XXX should be much larger
8234    private static final int        VERY_WIDE = 16384;
8235
8236    private static final int        BLINK = 500;
8237
8238    private static final int ANIMATED_SCROLL_GAP = 250;
8239    private long mLastScroll;
8240    private Scroller mScroller = null;
8241
8242    private BoringLayout.Metrics mBoring;
8243    private BoringLayout.Metrics mHintBoring;
8244
8245    private BoringLayout mSavedLayout, mSavedHintLayout;
8246
8247    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
8248    private InputFilter[] mFilters = NO_FILTERS;
8249    private static final Spanned EMPTY_SPANNED = new SpannedString("");
8250}
8251