TextView.java revision 8e618e54ef0f009cac15972af9d9a72d6f6b6f94 
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.widget;
18
19import com.android.internal.util.FastMath;
20import com.android.internal.widget.EditableInputConnection;
21
22import org.xmlpull.v1.XmlPullParserException;
23
24import android.content.Context;
25import android.content.Intent;
26import android.content.res.ColorStateList;
27import android.content.res.Resources;
28import android.content.res.TypedArray;
29import android.content.res.XmlResourceParser;
30import android.graphics.Canvas;
31import android.graphics.Paint;
32import android.graphics.Path;
33import android.graphics.Rect;
34import android.graphics.RectF;
35import android.graphics.Typeface;
36import android.graphics.drawable.Drawable;
37import android.os.Bundle;
38import android.os.Handler;
39import android.os.Message;
40import android.os.Parcel;
41import android.os.Parcelable;
42import android.os.ResultReceiver;
43import android.os.SystemClock;
44import android.text.BoringLayout;
45import android.text.ClipboardManager;
46import android.text.DynamicLayout;
47import android.text.Editable;
48import android.text.GetChars;
49import android.text.GraphicsOperations;
50import android.text.InputFilter;
51import android.text.InputType;
52import android.text.Layout;
53import android.text.ParcelableSpan;
54import android.text.Selection;
55import android.text.SpanWatcher;
56import android.text.Spannable;
57import android.text.SpannableString;
58import android.text.Spanned;
59import android.text.SpannedString;
60import android.text.StaticLayout;
61import android.text.TextPaint;
62import android.text.TextUtils;
63import android.text.TextWatcher;
64import android.text.method.DateKeyListener;
65import android.text.method.DateTimeKeyListener;
66import android.text.method.DialerKeyListener;
67import android.text.method.DigitsKeyListener;
68import android.text.method.KeyListener;
69import android.text.method.LinkMovementMethod;
70import android.text.method.MetaKeyKeyListener;
71import android.text.method.MovementMethod;
72import android.text.method.PasswordTransformationMethod;
73import android.text.method.SingleLineTransformationMethod;
74import android.text.method.TextKeyListener;
75import android.text.method.TimeKeyListener;
76import android.text.method.TransformationMethod;
77import android.text.style.ParagraphStyle;
78import android.text.style.URLSpan;
79import android.text.style.UpdateAppearance;
80import android.text.util.Linkify;
81import android.util.AttributeSet;
82import android.util.FloatMath;
83import android.util.Log;
84import android.util.TypedValue;
85import android.view.ContextMenu;
86import android.view.Gravity;
87import android.view.KeyEvent;
88import android.view.LayoutInflater;
89import android.view.MenuItem;
90import android.view.MotionEvent;
91import android.view.View;
92import android.view.ViewDebug;
93import android.view.ViewRoot;
94import android.view.ViewTreeObserver;
95import android.view.ViewGroup.LayoutParams;
96import android.view.accessibility.AccessibilityEvent;
97import android.view.accessibility.AccessibilityManager;
98import android.view.animation.AnimationUtils;
99import android.view.inputmethod.BaseInputConnection;
100import android.view.inputmethod.CompletionInfo;
101import android.view.inputmethod.EditorInfo;
102import android.view.inputmethod.ExtractedText;
103import android.view.inputmethod.ExtractedTextRequest;
104import android.view.inputmethod.InputConnection;
105import android.view.inputmethod.InputMethodManager;
106import android.widget.RemoteViews.RemoteView;
107
108import java.io.IOException;
109import java.lang.ref.WeakReference;
110import java.util.ArrayList;
111
112/**
113 * Displays text to the user and optionally allows them to edit it.  A TextView
114 * is a complete text editor, however the basic class is configured to not
115 * allow editing; see {@link EditText} for a subclass that configures the text
116 * view for editing.
117 *
118 * <p>
119 * <b>XML attributes</b>
120 * <p>
121 * See {@link android.R.styleable#TextView TextView Attributes},
122 * {@link android.R.styleable#View View Attributes}
123 *
124 * @attr ref android.R.styleable#TextView_text
125 * @attr ref android.R.styleable#TextView_bufferType
126 * @attr ref android.R.styleable#TextView_hint
127 * @attr ref android.R.styleable#TextView_textColor
128 * @attr ref android.R.styleable#TextView_textColorHighlight
129 * @attr ref android.R.styleable#TextView_textColorHint
130 * @attr ref android.R.styleable#TextView_textAppearance
131 * @attr ref android.R.styleable#TextView_textColorLink
132 * @attr ref android.R.styleable#TextView_textSize
133 * @attr ref android.R.styleable#TextView_textScaleX
134 * @attr ref android.R.styleable#TextView_typeface
135 * @attr ref android.R.styleable#TextView_textStyle
136 * @attr ref android.R.styleable#TextView_cursorVisible
137 * @attr ref android.R.styleable#TextView_maxLines
138 * @attr ref android.R.styleable#TextView_maxHeight
139 * @attr ref android.R.styleable#TextView_lines
140 * @attr ref android.R.styleable#TextView_height
141 * @attr ref android.R.styleable#TextView_minLines
142 * @attr ref android.R.styleable#TextView_minHeight
143 * @attr ref android.R.styleable#TextView_maxEms
144 * @attr ref android.R.styleable#TextView_maxWidth
145 * @attr ref android.R.styleable#TextView_ems
146 * @attr ref android.R.styleable#TextView_width
147 * @attr ref android.R.styleable#TextView_minEms
148 * @attr ref android.R.styleable#TextView_minWidth
149 * @attr ref android.R.styleable#TextView_gravity
150 * @attr ref android.R.styleable#TextView_scrollHorizontally
151 * @attr ref android.R.styleable#TextView_password
152 * @attr ref android.R.styleable#TextView_singleLine
153 * @attr ref android.R.styleable#TextView_selectAllOnFocus
154 * @attr ref android.R.styleable#TextView_includeFontPadding
155 * @attr ref android.R.styleable#TextView_maxLength
156 * @attr ref android.R.styleable#TextView_shadowColor
157 * @attr ref android.R.styleable#TextView_shadowDx
158 * @attr ref android.R.styleable#TextView_shadowDy
159 * @attr ref android.R.styleable#TextView_shadowRadius
160 * @attr ref android.R.styleable#TextView_autoLink
161 * @attr ref android.R.styleable#TextView_linksClickable
162 * @attr ref android.R.styleable#TextView_numeric
163 * @attr ref android.R.styleable#TextView_digits
164 * @attr ref android.R.styleable#TextView_phoneNumber
165 * @attr ref android.R.styleable#TextView_inputMethod
166 * @attr ref android.R.styleable#TextView_capitalize
167 * @attr ref android.R.styleable#TextView_autoText
168 * @attr ref android.R.styleable#TextView_editable
169 * @attr ref android.R.styleable#TextView_freezesText
170 * @attr ref android.R.styleable#TextView_ellipsize
171 * @attr ref android.R.styleable#TextView_drawableTop
172 * @attr ref android.R.styleable#TextView_drawableBottom
173 * @attr ref android.R.styleable#TextView_drawableRight
174 * @attr ref android.R.styleable#TextView_drawableLeft
175 * @attr ref android.R.styleable#TextView_drawablePadding
176 * @attr ref android.R.styleable#TextView_lineSpacingExtra
177 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
178 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
179 * @attr ref android.R.styleable#TextView_inputType
180 * @attr ref android.R.styleable#TextView_imeOptions
181 * @attr ref android.R.styleable#TextView_privateImeOptions
182 * @attr ref android.R.styleable#TextView_imeActionLabel
183 * @attr ref android.R.styleable#TextView_imeActionId
184 * @attr ref android.R.styleable#TextView_editorExtras
185 */
186@RemoteView
187public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
188    static final String TAG = "TextView";
189    static final boolean DEBUG_EXTRACT = false;
190
191    private static int PRIORITY = 100;
192
193    private ColorStateList mTextColor;
194    private int mCurTextColor;
195    private ColorStateList mHintTextColor;
196    private ColorStateList mLinkTextColor;
197    private int mCurHintTextColor;
198    private boolean mFreezesText;
199    private boolean mFrozenWithFocus;
200    private boolean mTemporaryDetach;
201    private boolean mDispatchTemporaryDetach;
202
203    private boolean mEatTouchRelease = false;
204    private boolean mScrolled = false;
205
206    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
207    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
208
209    private float mShadowRadius, mShadowDx, mShadowDy;
210
211    private static final int PREDRAW_NOT_REGISTERED = 0;
212    private static final int PREDRAW_PENDING = 1;
213    private static final int PREDRAW_DONE = 2;
214    private int mPreDrawState = PREDRAW_NOT_REGISTERED;
215
216    private TextUtils.TruncateAt mEllipsize = null;
217
218    // Enum for the "typeface" XML parameter.
219    // TODO: How can we get this from the XML instead of hardcoding it here?
220    private static final int SANS = 1;
221    private static final int SERIF = 2;
222    private static final int MONOSPACE = 3;
223
224    // Bitfield for the "numeric" XML parameter.
225    // TODO: How can we get this from the XML instead of hardcoding it here?
226    private static final int SIGNED = 2;
227    private static final int DECIMAL = 4;
228
229    class Drawables {
230        final Rect mCompoundRect = new Rect();
231        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight;
232        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight;
233        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight;
234        int mDrawablePadding;
235    }
236    private Drawables mDrawables;
237
238    private CharSequence mError;
239    private boolean mErrorWasChanged;
240    private ErrorPopup mPopup;
241    /**
242     * This flag is set if the TextView tries to display an error before it
243     * is attached to the window (so its position is still unknown).
244     * It causes the error to be shown later, when onAttachedToWindow()
245     * is called.
246     */
247    private boolean mShowErrorAfterAttach;
248
249    private CharWrapper mCharWrapper = null;
250
251    private boolean mSelectionMoved = false;
252    private boolean mTouchFocusSelected = false;
253
254    private Marquee mMarquee;
255    private boolean mRestartMarquee;
256
257    private int mMarqueeRepeatLimit = 3;
258
259    class InputContentType {
260        int imeOptions = EditorInfo.IME_NULL;
261        String privateImeOptions;
262        CharSequence imeActionLabel;
263        int imeActionId;
264        Bundle extras;
265        OnEditorActionListener onEditorActionListener;
266        boolean enterDown;
267    }
268    InputContentType mInputContentType;
269
270    class InputMethodState {
271        Rect mCursorRectInWindow = new Rect();
272        RectF mTmpRectF = new RectF();
273        float[] mTmpOffset = new float[2];
274        ExtractedTextRequest mExtracting;
275        final ExtractedText mTmpExtracted = new ExtractedText();
276        int mBatchEditNesting;
277        boolean mCursorChanged;
278        boolean mSelectionModeChanged;
279        boolean mContentChanged;
280        int mChangedStart, mChangedEnd, mChangedDelta;
281    }
282    InputMethodState mInputMethodState;
283
284    /*
285     * Kick-start the font cache for the zygote process (to pay the cost of
286     * initializing freetype for our default font only once).
287     */
288    static {
289        Paint p = new Paint();
290        p.setAntiAlias(true);
291        // We don't care about the result, just the side-effect of measuring.
292        p.measureText("H");
293    }
294
295    /**
296     * Interface definition for a callback to be invoked when an action is
297     * performed on the editor.
298     */
299    public interface OnEditorActionListener {
300        /**
301         * Called when an action is being performed.
302         *
303         * @param v The view that was clicked.
304         * @param actionId Identifier of the action.  This will be either the
305         * identifier you supplied, or {@link EditorInfo#IME_NULL
306         * EditorInfo.IME_NULL} if being called due to the enter key
307         * being pressed.
308         * @param event If triggered by an enter key, this is the event;
309         * otherwise, this is null.
310         * @return Return true if you have consumed the action, else false.
311         */
312        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
313    }
314
315    public TextView(Context context) {
316        this(context, null);
317    }
318
319    public TextView(Context context,
320                    AttributeSet attrs) {
321        this(context, attrs, com.android.internal.R.attr.textViewStyle);
322    }
323
324    public TextView(Context context,
325                    AttributeSet attrs,
326                    int defStyle) {
327        super(context, attrs, defStyle);
328        mText = "";
329
330        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
331        mTextPaint.density = getResources().getDisplayMetrics().density;
332        mTextPaint.setCompatibilityScaling(
333                getResources().getCompatibilityInfo().applicationScale);
334
335        // If we get the paint from the skin, we should set it to left, since
336        // the layout always wants it to be left.
337        // mTextPaint.setTextAlign(Paint.Align.LEFT);
338
339        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
340        mHighlightPaint.setCompatibilityScaling(
341                getResources().getCompatibilityInfo().applicationScale);
342
343        mMovement = getDefaultMovementMethod();
344        mTransformation = null;
345
346        TypedArray a =
347            context.obtainStyledAttributes(
348                attrs, com.android.internal.R.styleable.TextView, defStyle, 0);
349
350        int textColorHighlight = 0;
351        ColorStateList textColor = null;
352        ColorStateList textColorHint = null;
353        ColorStateList textColorLink = null;
354        int textSize = 15;
355        int typefaceIndex = -1;
356        int styleIndex = -1;
357
358        /*
359         * Look the appearance up without checking first if it exists because
360         * almost every TextView has one and it greatly simplifies the logic
361         * to be able to parse the appearance first and then let specific tags
362         * for this View override it.
363         */
364        TypedArray appearance = null;
365        int ap = a.getResourceId(com.android.internal.R.styleable.TextView_textAppearance, -1);
366        if (ap != -1) {
367            appearance = context.obtainStyledAttributes(ap,
368                                com.android.internal.R.styleable.
369                                TextAppearance);
370        }
371        if (appearance != null) {
372            int n = appearance.getIndexCount();
373            for (int i = 0; i < n; i++) {
374                int attr = appearance.getIndex(i);
375
376                switch (attr) {
377                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
378                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
379                    break;
380
381                case com.android.internal.R.styleable.TextAppearance_textColor:
382                    textColor = appearance.getColorStateList(attr);
383                    break;
384
385                case com.android.internal.R.styleable.TextAppearance_textColorHint:
386                    textColorHint = appearance.getColorStateList(attr);
387                    break;
388
389                case com.android.internal.R.styleable.TextAppearance_textColorLink:
390                    textColorLink = appearance.getColorStateList(attr);
391                    break;
392
393                case com.android.internal.R.styleable.TextAppearance_textSize:
394                    textSize = appearance.getDimensionPixelSize(attr, textSize);
395                    break;
396
397                case com.android.internal.R.styleable.TextAppearance_typeface:
398                    typefaceIndex = appearance.getInt(attr, -1);
399                    break;
400
401                case com.android.internal.R.styleable.TextAppearance_textStyle:
402                    styleIndex = appearance.getInt(attr, -1);
403                    break;
404                }
405            }
406
407            appearance.recycle();
408        }
409
410        boolean editable = getDefaultEditable();
411        CharSequence inputMethod = null;
412        int numeric = 0;
413        CharSequence digits = null;
414        boolean phone = false;
415        boolean autotext = false;
416        int autocap = -1;
417        int buffertype = 0;
418        boolean selectallonfocus = false;
419        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
420            drawableBottom = null;
421        int drawablePadding = 0;
422        int ellipsize = -1;
423        boolean singleLine = false;
424        int maxlength = -1;
425        CharSequence text = "";
426        CharSequence hint = null;
427        int shadowcolor = 0;
428        float dx = 0, dy = 0, r = 0;
429        boolean password = false;
430        int inputType = EditorInfo.TYPE_NULL;
431
432        int n = a.getIndexCount();
433        for (int i = 0; i < n; i++) {
434            int attr = a.getIndex(i);
435
436            switch (attr) {
437            case com.android.internal.R.styleable.TextView_editable:
438                editable = a.getBoolean(attr, editable);
439                break;
440
441            case com.android.internal.R.styleable.TextView_inputMethod:
442                inputMethod = a.getText(attr);
443                break;
444
445            case com.android.internal.R.styleable.TextView_numeric:
446                numeric = a.getInt(attr, numeric);
447                break;
448
449            case com.android.internal.R.styleable.TextView_digits:
450                digits = a.getText(attr);
451                break;
452
453            case com.android.internal.R.styleable.TextView_phoneNumber:
454                phone = a.getBoolean(attr, phone);
455                break;
456
457            case com.android.internal.R.styleable.TextView_autoText:
458                autotext = a.getBoolean(attr, autotext);
459                break;
460
461            case com.android.internal.R.styleable.TextView_capitalize:
462                autocap = a.getInt(attr, autocap);
463                break;
464
465            case com.android.internal.R.styleable.TextView_bufferType:
466                buffertype = a.getInt(attr, buffertype);
467                break;
468
469            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
470                selectallonfocus = a.getBoolean(attr, selectallonfocus);
471                break;
472
473            case com.android.internal.R.styleable.TextView_autoLink:
474                mAutoLinkMask = a.getInt(attr, 0);
475                break;
476
477            case com.android.internal.R.styleable.TextView_linksClickable:
478                mLinksClickable = a.getBoolean(attr, true);
479                break;
480
481            case com.android.internal.R.styleable.TextView_drawableLeft:
482                drawableLeft = a.getDrawable(attr);
483                break;
484
485            case com.android.internal.R.styleable.TextView_drawableTop:
486                drawableTop = a.getDrawable(attr);
487                break;
488
489            case com.android.internal.R.styleable.TextView_drawableRight:
490                drawableRight = a.getDrawable(attr);
491                break;
492
493            case com.android.internal.R.styleable.TextView_drawableBottom:
494                drawableBottom = a.getDrawable(attr);
495                break;
496
497            case com.android.internal.R.styleable.TextView_drawablePadding:
498                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
499                break;
500
501            case com.android.internal.R.styleable.TextView_maxLines:
502                setMaxLines(a.getInt(attr, -1));
503                break;
504
505            case com.android.internal.R.styleable.TextView_maxHeight:
506                setMaxHeight(a.getDimensionPixelSize(attr, -1));
507                break;
508
509            case com.android.internal.R.styleable.TextView_lines:
510                setLines(a.getInt(attr, -1));
511                break;
512
513            case com.android.internal.R.styleable.TextView_height:
514                setHeight(a.getDimensionPixelSize(attr, -1));
515                break;
516
517            case com.android.internal.R.styleable.TextView_minLines:
518                setMinLines(a.getInt(attr, -1));
519                break;
520
521            case com.android.internal.R.styleable.TextView_minHeight:
522                setMinHeight(a.getDimensionPixelSize(attr, -1));
523                break;
524
525            case com.android.internal.R.styleable.TextView_maxEms:
526                setMaxEms(a.getInt(attr, -1));
527                break;
528
529            case com.android.internal.R.styleable.TextView_maxWidth:
530                setMaxWidth(a.getDimensionPixelSize(attr, -1));
531                break;
532
533            case com.android.internal.R.styleable.TextView_ems:
534                setEms(a.getInt(attr, -1));
535                break;
536
537            case com.android.internal.R.styleable.TextView_width:
538                setWidth(a.getDimensionPixelSize(attr, -1));
539                break;
540
541            case com.android.internal.R.styleable.TextView_minEms:
542                setMinEms(a.getInt(attr, -1));
543                break;
544
545            case com.android.internal.R.styleable.TextView_minWidth:
546                setMinWidth(a.getDimensionPixelSize(attr, -1));
547                break;
548
549            case com.android.internal.R.styleable.TextView_gravity:
550                setGravity(a.getInt(attr, -1));
551                break;
552
553            case com.android.internal.R.styleable.TextView_hint:
554                hint = a.getText(attr);
555                break;
556
557            case com.android.internal.R.styleable.TextView_text:
558                text = a.getText(attr);
559                break;
560
561            case com.android.internal.R.styleable.TextView_scrollHorizontally:
562                if (a.getBoolean(attr, false)) {
563                    setHorizontallyScrolling(true);
564                }
565                break;
566
567            case com.android.internal.R.styleable.TextView_singleLine:
568                singleLine = a.getBoolean(attr, singleLine);
569                break;
570
571            case com.android.internal.R.styleable.TextView_ellipsize:
572                ellipsize = a.getInt(attr, ellipsize);
573                break;
574
575            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
576                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
577                break;
578
579            case com.android.internal.R.styleable.TextView_includeFontPadding:
580                if (!a.getBoolean(attr, true)) {
581                    setIncludeFontPadding(false);
582                }
583                break;
584
585            case com.android.internal.R.styleable.TextView_cursorVisible:
586                if (!a.getBoolean(attr, true)) {
587                    setCursorVisible(false);
588                }
589                break;
590
591            case com.android.internal.R.styleable.TextView_maxLength:
592                maxlength = a.getInt(attr, -1);
593                break;
594
595            case com.android.internal.R.styleable.TextView_textScaleX:
596                setTextScaleX(a.getFloat(attr, 1.0f));
597                break;
598
599            case com.android.internal.R.styleable.TextView_freezesText:
600                mFreezesText = a.getBoolean(attr, false);
601                break;
602
603            case com.android.internal.R.styleable.TextView_shadowColor:
604                shadowcolor = a.getInt(attr, 0);
605                break;
606
607            case com.android.internal.R.styleable.TextView_shadowDx:
608                dx = a.getFloat(attr, 0);
609                break;
610
611            case com.android.internal.R.styleable.TextView_shadowDy:
612                dy = a.getFloat(attr, 0);
613                break;
614
615            case com.android.internal.R.styleable.TextView_shadowRadius:
616                r = a.getFloat(attr, 0);
617                break;
618
619            case com.android.internal.R.styleable.TextView_enabled:
620                setEnabled(a.getBoolean(attr, isEnabled()));
621                break;
622
623            case com.android.internal.R.styleable.TextView_textColorHighlight:
624                textColorHighlight = a.getColor(attr, textColorHighlight);
625                break;
626
627            case com.android.internal.R.styleable.TextView_textColor:
628                textColor = a.getColorStateList(attr);
629                break;
630
631            case com.android.internal.R.styleable.TextView_textColorHint:
632                textColorHint = a.getColorStateList(attr);
633                break;
634
635            case com.android.internal.R.styleable.TextView_textColorLink:
636                textColorLink = a.getColorStateList(attr);
637                break;
638
639            case com.android.internal.R.styleable.TextView_textSize:
640                textSize = a.getDimensionPixelSize(attr, textSize);
641                break;
642
643            case com.android.internal.R.styleable.TextView_typeface:
644                typefaceIndex = a.getInt(attr, typefaceIndex);
645                break;
646
647            case com.android.internal.R.styleable.TextView_textStyle:
648                styleIndex = a.getInt(attr, styleIndex);
649                break;
650
651            case com.android.internal.R.styleable.TextView_password:
652                password = a.getBoolean(attr, password);
653                break;
654
655            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
656                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
657                break;
658
659            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
660                mSpacingMult = a.getFloat(attr, mSpacingMult);
661                break;
662
663            case com.android.internal.R.styleable.TextView_inputType:
664                inputType = a.getInt(attr, mInputType);
665                break;
666
667            case com.android.internal.R.styleable.TextView_imeOptions:
668                if (mInputContentType == null) {
669                    mInputContentType = new InputContentType();
670                }
671                mInputContentType.imeOptions = a.getInt(attr,
672                        mInputContentType.imeOptions);
673                break;
674
675            case com.android.internal.R.styleable.TextView_imeActionLabel:
676                if (mInputContentType == null) {
677                    mInputContentType = new InputContentType();
678                }
679                mInputContentType.imeActionLabel = a.getText(attr);
680                break;
681
682            case com.android.internal.R.styleable.TextView_imeActionId:
683                if (mInputContentType == null) {
684                    mInputContentType = new InputContentType();
685                }
686                mInputContentType.imeActionId = a.getInt(attr,
687                        mInputContentType.imeActionId);
688                break;
689
690            case com.android.internal.R.styleable.TextView_privateImeOptions:
691                setPrivateImeOptions(a.getString(attr));
692                break;
693
694            case com.android.internal.R.styleable.TextView_editorExtras:
695                try {
696                    setInputExtras(a.getResourceId(attr, 0));
697                } catch (XmlPullParserException e) {
698                    Log.w("TextView", "Failure reading input extras", e);
699                } catch (IOException e) {
700                    Log.w("TextView", "Failure reading input extras", e);
701                }
702                break;
703            }
704        }
705        a.recycle();
706
707        BufferType bufferType = BufferType.EDITABLE;
708
709        if ((inputType&(EditorInfo.TYPE_MASK_CLASS
710                |EditorInfo.TYPE_MASK_VARIATION))
711                == (EditorInfo.TYPE_CLASS_TEXT
712                        |EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
713            password = true;
714        }
715
716        if (inputMethod != null) {
717            Class c;
718
719            try {
720                c = Class.forName(inputMethod.toString());
721            } catch (ClassNotFoundException ex) {
722                throw new RuntimeException(ex);
723            }
724
725            try {
726                mInput = (KeyListener) c.newInstance();
727            } catch (InstantiationException ex) {
728                throw new RuntimeException(ex);
729            } catch (IllegalAccessException ex) {
730                throw new RuntimeException(ex);
731            }
732            try {
733                mInputType = inputType != EditorInfo.TYPE_NULL
734                        ? inputType
735                        : mInput.getInputType();
736            } catch (IncompatibleClassChangeError e) {
737                mInputType = EditorInfo.TYPE_CLASS_TEXT;
738            }
739        } else if (digits != null) {
740            mInput = DigitsKeyListener.getInstance(digits.toString());
741            // If no input type was specified, we will default to generic
742            // text, since we can't tell the IME about the set of digits
743            // that was selected.
744            mInputType = inputType != EditorInfo.TYPE_NULL
745                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
746        } else if (inputType != EditorInfo.TYPE_NULL) {
747            setInputType(inputType, true);
748            singleLine = (inputType&(EditorInfo.TYPE_MASK_CLASS
749                            | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) !=
750                    (EditorInfo.TYPE_CLASS_TEXT
751                            | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
752        } else if (phone) {
753            mInput = DialerKeyListener.getInstance();
754            mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
755        } else if (numeric != 0) {
756            mInput = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
757                                                   (numeric & DECIMAL) != 0);
758            inputType = EditorInfo.TYPE_CLASS_NUMBER;
759            if ((numeric & SIGNED) != 0) {
760                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
761            }
762            if ((numeric & DECIMAL) != 0) {
763                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
764            }
765            mInputType = inputType;
766        } else if (autotext || autocap != -1) {
767            TextKeyListener.Capitalize cap;
768
769            inputType = EditorInfo.TYPE_CLASS_TEXT;
770            if (!singleLine) {
771                inputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
772            }
773
774            switch (autocap) {
775            case 1:
776                cap = TextKeyListener.Capitalize.SENTENCES;
777                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
778                break;
779
780            case 2:
781                cap = TextKeyListener.Capitalize.WORDS;
782                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
783                break;
784
785            case 3:
786                cap = TextKeyListener.Capitalize.CHARACTERS;
787                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
788                break;
789
790            default:
791                cap = TextKeyListener.Capitalize.NONE;
792                break;
793            }
794
795            mInput = TextKeyListener.getInstance(autotext, cap);
796            mInputType = inputType;
797        } else if (editable) {
798            mInput = TextKeyListener.getInstance();
799            mInputType = EditorInfo.TYPE_CLASS_TEXT;
800        } else {
801            mInput = null;
802
803            switch (buffertype) {
804                case 0:
805                    bufferType = BufferType.NORMAL;
806                    break;
807                case 1:
808                    bufferType = BufferType.SPANNABLE;
809                    break;
810                case 2:
811                    bufferType = BufferType.EDITABLE;
812                    break;
813            }
814        }
815
816        if (password && (mInputType&EditorInfo.TYPE_MASK_CLASS)
817                == EditorInfo.TYPE_CLASS_TEXT) {
818            mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
819                | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD;
820        }
821
822        if (selectallonfocus) {
823            mSelectAllOnFocus = true;
824
825            if (bufferType == BufferType.NORMAL)
826                bufferType = BufferType.SPANNABLE;
827        }
828
829        setCompoundDrawablesWithIntrinsicBounds(
830            drawableLeft, drawableTop, drawableRight, drawableBottom);
831        setCompoundDrawablePadding(drawablePadding);
832
833        if (singleLine) {
834            setSingleLine();
835
836            if (mInput == null && ellipsize < 0) {
837                ellipsize = 3; // END
838            }
839        }
840
841        switch (ellipsize) {
842            case 1:
843                setEllipsize(TextUtils.TruncateAt.START);
844                break;
845            case 2:
846                setEllipsize(TextUtils.TruncateAt.MIDDLE);
847                break;
848            case 3:
849                setEllipsize(TextUtils.TruncateAt.END);
850                break;
851            case 4:
852                setHorizontalFadingEdgeEnabled(true);
853                setEllipsize(TextUtils.TruncateAt.MARQUEE);
854                break;
855        }
856
857        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
858        setHintTextColor(textColorHint);
859        setLinkTextColor(textColorLink);
860        if (textColorHighlight != 0) {
861            setHighlightColor(textColorHighlight);
862        }
863        setRawTextSize(textSize);
864
865        if (password) {
866            setTransformationMethod(PasswordTransformationMethod.getInstance());
867            typefaceIndex = MONOSPACE;
868        } else if ((mInputType&(EditorInfo.TYPE_MASK_CLASS
869                |EditorInfo.TYPE_MASK_VARIATION))
870                == (EditorInfo.TYPE_CLASS_TEXT
871                        |EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
872            typefaceIndex = MONOSPACE;
873        }
874
875        setTypefaceByIndex(typefaceIndex, styleIndex);
876
877        if (shadowcolor != 0) {
878            setShadowLayer(r, dx, dy, shadowcolor);
879        }
880
881        if (maxlength >= 0) {
882            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
883        } else {
884            setFilters(NO_FILTERS);
885        }
886
887        setText(text, bufferType);
888        if (hint != null) setHint(hint);
889
890        /*
891         * Views are not normally focusable unless specified to be.
892         * However, TextViews that have input or movement methods *are*
893         * focusable by default.
894         */
895        a = context.obtainStyledAttributes(attrs,
896                                           com.android.internal.R.styleable.View,
897                                           defStyle, 0);
898
899        boolean focusable = mMovement != null || mInput != null;
900        boolean clickable = focusable;
901        boolean longClickable = focusable;
902
903        n = a.getIndexCount();
904        for (int i = 0; i < n; i++) {
905            int attr = a.getIndex(i);
906
907            switch (attr) {
908            case com.android.internal.R.styleable.View_focusable:
909                focusable = a.getBoolean(attr, focusable);
910                break;
911
912            case com.android.internal.R.styleable.View_clickable:
913                clickable = a.getBoolean(attr, clickable);
914                break;
915
916            case com.android.internal.R.styleable.View_longClickable:
917                longClickable = a.getBoolean(attr, longClickable);
918                break;
919            }
920        }
921        a.recycle();
922
923        setFocusable(focusable);
924        setClickable(clickable);
925        setLongClickable(longClickable);
926    }
927
928    private void setTypefaceByIndex(int typefaceIndex, int styleIndex) {
929        Typeface tf = null;
930        switch (typefaceIndex) {
931            case SANS:
932                tf = Typeface.SANS_SERIF;
933                break;
934
935            case SERIF:
936                tf = Typeface.SERIF;
937                break;
938
939            case MONOSPACE:
940                tf = Typeface.MONOSPACE;
941                break;
942        }
943
944        setTypeface(tf, styleIndex);
945    }
946
947    /**
948     * Sets the typeface and style in which the text should be displayed,
949     * and turns on the fake bold and italic bits in the Paint if the
950     * Typeface that you provided does not have all the bits in the
951     * style that you specified.
952     *
953     * @attr ref android.R.styleable#TextView_typeface
954     * @attr ref android.R.styleable#TextView_textStyle
955     */
956    public void setTypeface(Typeface tf, int style) {
957        if (style > 0) {
958            if (tf == null) {
959                tf = Typeface.defaultFromStyle(style);
960            } else {
961                tf = Typeface.create(tf, style);
962            }
963
964            setTypeface(tf);
965            // now compute what (if any) algorithmic styling is needed
966            int typefaceStyle = tf != null ? tf.getStyle() : 0;
967            int need = style & ~typefaceStyle;
968            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
969            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
970        } else {
971            mTextPaint.setFakeBoldText(false);
972            mTextPaint.setTextSkewX(0);
973            setTypeface(tf);
974        }
975    }
976
977    /**
978     * Subclasses override this to specify that they have a KeyListener
979     * by default even if not specifically called for in the XML options.
980     */
981    protected boolean getDefaultEditable() {
982        return false;
983    }
984
985    /**
986     * Subclasses override this to specify a default movement method.
987     */
988    protected MovementMethod getDefaultMovementMethod() {
989        return null;
990    }
991
992    /**
993     * Return the text the TextView is displaying. If setText() was called with
994     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
995     * the return value from this method to Spannable or Editable, respectively.
996     *
997     * Note: The content of the return value should not be modified. If you want
998     * a modifiable one, you should make your own copy first.
999     */
1000    @ViewDebug.CapturedViewProperty
1001    public CharSequence getText() {
1002        return mText;
1003    }
1004
1005    /**
1006     * Returns the length, in characters, of the text managed by this TextView
1007     */
1008    public int length() {
1009        return mText.length();
1010    }
1011
1012    /**
1013     * Return the text the TextView is displaying as an Editable object.  If
1014     * the text is not editable, null is returned.
1015     *
1016     * @see #getText
1017     */
1018    public Editable getEditableText() {
1019        return (mText instanceof Editable) ? (Editable)mText : null;
1020    }
1021
1022    /**
1023     * @return the height of one standard line in pixels.  Note that markup
1024     * within the text can cause individual lines to be taller or shorter
1025     * than this height, and the layout may contain additional first-
1026     * or last-line padding.
1027     */
1028    public int getLineHeight() {
1029        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult
1030                          + mSpacingAdd);
1031    }
1032
1033    /**
1034     * @return the Layout that is currently being used to display the text.
1035     * This can be null if the text or width has recently changes.
1036     */
1037    public final Layout getLayout() {
1038        return mLayout;
1039    }
1040
1041    /**
1042     * @return the current key listener for this TextView.
1043     * This will frequently be null for non-EditText TextViews.
1044     */
1045    public final KeyListener getKeyListener() {
1046        return mInput;
1047    }
1048
1049    /**
1050     * Sets the key listener to be used with this TextView.  This can be null
1051     * to disallow user input.  Note that this method has significant and
1052     * subtle interactions with soft keyboards and other input method:
1053     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1054     * for important details.  Calling this method will replace the current
1055     * content type of the text view with the content type returned by the
1056     * key listener.
1057     * <p>
1058     * Be warned that if you want a TextView with a key listener or movement
1059     * method not to be focusable, or if you want a TextView without a
1060     * key listener or movement method to be focusable, you must call
1061     * {@link #setFocusable} again after calling this to get the focusability
1062     * back the way you want it.
1063     *
1064     * @attr ref android.R.styleable#TextView_numeric
1065     * @attr ref android.R.styleable#TextView_digits
1066     * @attr ref android.R.styleable#TextView_phoneNumber
1067     * @attr ref android.R.styleable#TextView_inputMethod
1068     * @attr ref android.R.styleable#TextView_capitalize
1069     * @attr ref android.R.styleable#TextView_autoText
1070     */
1071    public void setKeyListener(KeyListener input) {
1072        setKeyListenerOnly(input);
1073        fixFocusableAndClickableSettings();
1074
1075        if (input != null) {
1076            try {
1077                mInputType = mInput.getInputType();
1078            } catch (IncompatibleClassChangeError e) {
1079                mInputType = EditorInfo.TYPE_CLASS_TEXT;
1080            }
1081            if ((mInputType&EditorInfo.TYPE_MASK_CLASS)
1082                    == EditorInfo.TYPE_CLASS_TEXT) {
1083                if (mSingleLine) {
1084                    mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
1085                } else {
1086                    mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
1087                }
1088            }
1089        } else {
1090            mInputType = EditorInfo.TYPE_NULL;
1091        }
1092
1093        InputMethodManager imm = InputMethodManager.peekInstance();
1094        if (imm != null) imm.restartInput(this);
1095    }
1096
1097    private void setKeyListenerOnly(KeyListener input) {
1098        mInput = input;
1099        if (mInput != null && !(mText instanceof Editable))
1100            setText(mText);
1101
1102        setFilters((Editable) mText, mFilters);
1103    }
1104
1105    /**
1106     * @return the movement method being used for this TextView.
1107     * This will frequently be null for non-EditText TextViews.
1108     */
1109    public final MovementMethod getMovementMethod() {
1110        return mMovement;
1111    }
1112
1113    /**
1114     * Sets the movement method (arrow key handler) to be used for
1115     * this TextView.  This can be null to disallow using the arrow keys
1116     * to move the cursor or scroll the view.
1117     * <p>
1118     * Be warned that if you want a TextView with a key listener or movement
1119     * method not to be focusable, or if you want a TextView without a
1120     * key listener or movement method to be focusable, you must call
1121     * {@link #setFocusable} again after calling this to get the focusability
1122     * back the way you want it.
1123     */
1124    public final void setMovementMethod(MovementMethod movement) {
1125        mMovement = movement;
1126
1127        if (mMovement != null && !(mText instanceof Spannable))
1128            setText(mText);
1129
1130        fixFocusableAndClickableSettings();
1131    }
1132
1133    private void fixFocusableAndClickableSettings() {
1134        if ((mMovement != null) || mInput != null) {
1135            setFocusable(true);
1136            setClickable(true);
1137            setLongClickable(true);
1138        } else {
1139            setFocusable(false);
1140            setClickable(false);
1141            setLongClickable(false);
1142        }
1143    }
1144
1145    /**
1146     * @return the current transformation method for this TextView.
1147     * This will frequently be null except for single-line and password
1148     * fields.
1149     */
1150    public final TransformationMethod getTransformationMethod() {
1151        return mTransformation;
1152    }
1153
1154    /**
1155     * Sets the transformation that is applied to the text that this
1156     * TextView is displaying.
1157     *
1158     * @attr ref android.R.styleable#TextView_password
1159     * @attr ref android.R.styleable#TextView_singleLine
1160     */
1161    public final void setTransformationMethod(TransformationMethod method) {
1162        if (method == mTransformation) {
1163            // Avoid the setText() below if the transformation is
1164            // the same.
1165            return;
1166        }
1167        if (mTransformation != null) {
1168            if (mText instanceof Spannable) {
1169                ((Spannable) mText).removeSpan(mTransformation);
1170            }
1171        }
1172
1173        mTransformation = method;
1174
1175        setText(mText);
1176    }
1177
1178    /**
1179     * Returns the top padding of the view, plus space for the top
1180     * Drawable if any.
1181     */
1182    public int getCompoundPaddingTop() {
1183        final Drawables dr = mDrawables;
1184        if (dr == null || dr.mDrawableTop == null) {
1185            return mPaddingTop;
1186        } else {
1187            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1188        }
1189    }
1190
1191    /**
1192     * Returns the bottom padding of the view, plus space for the bottom
1193     * Drawable if any.
1194     */
1195    public int getCompoundPaddingBottom() {
1196        final Drawables dr = mDrawables;
1197        if (dr == null || dr.mDrawableBottom == null) {
1198            return mPaddingBottom;
1199        } else {
1200            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1201        }
1202    }
1203
1204    /**
1205     * Returns the left padding of the view, plus space for the left
1206     * Drawable if any.
1207     */
1208    public int getCompoundPaddingLeft() {
1209        final Drawables dr = mDrawables;
1210        if (dr == null || dr.mDrawableLeft == null) {
1211            return mPaddingLeft;
1212        } else {
1213            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1214        }
1215    }
1216
1217    /**
1218     * Returns the right padding of the view, plus space for the right
1219     * Drawable if any.
1220     */
1221    public int getCompoundPaddingRight() {
1222        final Drawables dr = mDrawables;
1223        if (dr == null || dr.mDrawableRight == null) {
1224            return mPaddingRight;
1225        } else {
1226            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1227        }
1228    }
1229
1230    /**
1231     * Returns the extended top padding of the view, including both the
1232     * top Drawable if any and any extra space to keep more than maxLines
1233     * of text from showing.  It is only valid to call this after measuring.
1234     */
1235    public int getExtendedPaddingTop() {
1236        if (mMaxMode != LINES) {
1237            return getCompoundPaddingTop();
1238        }
1239
1240        if (mLayout.getLineCount() <= mMaximum) {
1241            return getCompoundPaddingTop();
1242        }
1243
1244        int top = getCompoundPaddingTop();
1245        int bottom = getCompoundPaddingBottom();
1246        int viewht = getHeight() - top - bottom;
1247        int layoutht = mLayout.getLineTop(mMaximum);
1248
1249        if (layoutht >= viewht) {
1250            return top;
1251        }
1252
1253        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1254        if (gravity == Gravity.TOP) {
1255            return top;
1256        } else if (gravity == Gravity.BOTTOM) {
1257            return top + viewht - layoutht;
1258        } else { // (gravity == Gravity.CENTER_VERTICAL)
1259            return top + (viewht - layoutht) / 2;
1260        }
1261    }
1262
1263    /**
1264     * Returns the extended bottom padding of the view, including both the
1265     * bottom Drawable if any and any extra space to keep more than maxLines
1266     * of text from showing.  It is only valid to call this after measuring.
1267     */
1268    public int getExtendedPaddingBottom() {
1269        if (mMaxMode != LINES) {
1270            return getCompoundPaddingBottom();
1271        }
1272
1273        if (mLayout.getLineCount() <= mMaximum) {
1274            return getCompoundPaddingBottom();
1275        }
1276
1277        int top = getCompoundPaddingTop();
1278        int bottom = getCompoundPaddingBottom();
1279        int viewht = getHeight() - top - bottom;
1280        int layoutht = mLayout.getLineTop(mMaximum);
1281
1282        if (layoutht >= viewht) {
1283            return bottom;
1284        }
1285
1286        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1287        if (gravity == Gravity.TOP) {
1288            return bottom + viewht - layoutht;
1289        } else if (gravity == Gravity.BOTTOM) {
1290            return bottom;
1291        } else { // (gravity == Gravity.CENTER_VERTICAL)
1292            return bottom + (viewht - layoutht) / 2;
1293        }
1294    }
1295
1296    /**
1297     * Returns the total left padding of the view, including the left
1298     * Drawable if any.
1299     */
1300    public int getTotalPaddingLeft() {
1301        return getCompoundPaddingLeft();
1302    }
1303
1304    /**
1305     * Returns the total right padding of the view, including the right
1306     * Drawable if any.
1307     */
1308    public int getTotalPaddingRight() {
1309        return getCompoundPaddingRight();
1310    }
1311
1312    /**
1313     * Returns the total top padding of the view, including the top
1314     * Drawable if any, the extra space to keep more than maxLines
1315     * from showing, and the vertical offset for gravity, if any.
1316     */
1317    public int getTotalPaddingTop() {
1318        return getExtendedPaddingTop() + getVerticalOffset(true);
1319    }
1320
1321    /**
1322     * Returns the total bottom padding of the view, including the bottom
1323     * Drawable if any, the extra space to keep more than maxLines
1324     * from showing, and the vertical offset for gravity, if any.
1325     */
1326    public int getTotalPaddingBottom() {
1327        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1328    }
1329
1330    /**
1331     * Sets the Drawables (if any) to appear to the left of, above,
1332     * to the right of, and below the text.  Use null if you do not
1333     * want a Drawable there.  The Drawables must already have had
1334     * {@link Drawable#setBounds} called.
1335     *
1336     * @attr ref android.R.styleable#TextView_drawableLeft
1337     * @attr ref android.R.styleable#TextView_drawableTop
1338     * @attr ref android.R.styleable#TextView_drawableRight
1339     * @attr ref android.R.styleable#TextView_drawableBottom
1340     */
1341    public void setCompoundDrawables(Drawable left, Drawable top,
1342                                     Drawable right, Drawable bottom) {
1343        Drawables dr = mDrawables;
1344
1345        final boolean drawables = left != null || top != null
1346                || right != null || bottom != null;
1347
1348        if (!drawables) {
1349            // Clearing drawables...  can we free the data structure?
1350            if (dr != null) {
1351                if (dr.mDrawablePadding == 0) {
1352                    mDrawables = null;
1353                } else {
1354                    // We need to retain the last set padding, so just clear
1355                    // out all of the fields in the existing structure.
1356                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
1357                    dr.mDrawableLeft = null;
1358                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1359                    dr.mDrawableTop = null;
1360                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
1361                    dr.mDrawableRight = null;
1362                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1363                    dr.mDrawableBottom = null;
1364                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1365                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1366                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1367                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1368                }
1369            }
1370        } else {
1371            if (dr == null) {
1372                mDrawables = dr = new Drawables();
1373            }
1374
1375            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
1376                dr.mDrawableLeft.setCallback(null);
1377            }
1378            dr.mDrawableLeft = left;
1379
1380            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1381                dr.mDrawableTop.setCallback(null);
1382            }
1383            dr.mDrawableTop = top;
1384
1385            if (dr.mDrawableRight != right && dr.mDrawableRight != null) {
1386                dr.mDrawableRight.setCallback(null);
1387            }
1388            dr.mDrawableRight = right;
1389
1390            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1391                dr.mDrawableBottom.setCallback(null);
1392            }
1393            dr.mDrawableBottom = bottom;
1394
1395            final Rect compoundRect = dr.mCompoundRect;
1396            int[] state;
1397
1398            state = getDrawableState();
1399
1400            if (left != null) {
1401                left.setState(state);
1402                left.copyBounds(compoundRect);
1403                left.setCallback(this);
1404                dr.mDrawableSizeLeft = compoundRect.width();
1405                dr.mDrawableHeightLeft = compoundRect.height();
1406            } else {
1407                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1408            }
1409
1410            if (right != null) {
1411                right.setState(state);
1412                right.copyBounds(compoundRect);
1413                right.setCallback(this);
1414                dr.mDrawableSizeRight = compoundRect.width();
1415                dr.mDrawableHeightRight = compoundRect.height();
1416            } else {
1417                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1418            }
1419
1420            if (top != null) {
1421                top.setState(state);
1422                top.copyBounds(compoundRect);
1423                top.setCallback(this);
1424                dr.mDrawableSizeTop = compoundRect.height();
1425                dr.mDrawableWidthTop = compoundRect.width();
1426            } else {
1427                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1428            }
1429
1430            if (bottom != null) {
1431                bottom.setState(state);
1432                bottom.copyBounds(compoundRect);
1433                bottom.setCallback(this);
1434                dr.mDrawableSizeBottom = compoundRect.height();
1435                dr.mDrawableWidthBottom = compoundRect.width();
1436            } else {
1437                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1438            }
1439        }
1440
1441        invalidate();
1442        requestLayout();
1443    }
1444
1445    /**
1446     * Sets the Drawables (if any) to appear to the left of, above,
1447     * to the right of, and below the text.  Use 0 if you do not
1448     * want a Drawable there. The Drawables' bounds will be set to
1449     * their intrinsic bounds.
1450     *
1451     * @param left Resource identifier of the left Drawable.
1452     * @param top Resource identifier of the top Drawable.
1453     * @param right Resource identifier of the right Drawable.
1454     * @param bottom Resource identifier of the bottom Drawable.
1455     *
1456     * @attr ref android.R.styleable#TextView_drawableLeft
1457     * @attr ref android.R.styleable#TextView_drawableTop
1458     * @attr ref android.R.styleable#TextView_drawableRight
1459     * @attr ref android.R.styleable#TextView_drawableBottom
1460     */
1461    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1462        final Resources resources = getContext().getResources();
1463        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null,
1464                top != 0 ? resources.getDrawable(top) : null,
1465                right != 0 ? resources.getDrawable(right) : null,
1466                bottom != 0 ? resources.getDrawable(bottom) : null);
1467    }
1468
1469    /**
1470     * Sets the Drawables (if any) to appear to the left of, above,
1471     * to the right of, and below the text.  Use null if you do not
1472     * want a Drawable there. The Drawables' bounds will be set to
1473     * their intrinsic bounds.
1474     *
1475     * @attr ref android.R.styleable#TextView_drawableLeft
1476     * @attr ref android.R.styleable#TextView_drawableTop
1477     * @attr ref android.R.styleable#TextView_drawableRight
1478     * @attr ref android.R.styleable#TextView_drawableBottom
1479     */
1480    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1481            Drawable right, Drawable bottom) {
1482
1483        if (left != null) {
1484            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1485        }
1486        if (right != null) {
1487            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1488        }
1489        if (top != null) {
1490            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1491        }
1492        if (bottom != null) {
1493            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
1494        }
1495        setCompoundDrawables(left, top, right, bottom);
1496    }
1497
1498    /**
1499     * Returns drawables for the left, top, right, and bottom borders.
1500     */
1501    public Drawable[] getCompoundDrawables() {
1502        final Drawables dr = mDrawables;
1503        if (dr != null) {
1504            return new Drawable[] {
1505                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
1506            };
1507        } else {
1508            return new Drawable[] { null, null, null, null };
1509        }
1510    }
1511
1512    /**
1513     * Sets the size of the padding between the compound drawables and
1514     * the text.
1515     *
1516     * @attr ref android.R.styleable#TextView_drawablePadding
1517     */
1518    public void setCompoundDrawablePadding(int pad) {
1519        Drawables dr = mDrawables;
1520        if (pad == 0) {
1521            if (dr != null) {
1522                dr.mDrawablePadding = pad;
1523            }
1524        } else {
1525            if (dr == null) {
1526                mDrawables = dr = new Drawables();
1527            }
1528            dr.mDrawablePadding = pad;
1529        }
1530
1531        invalidate();
1532        requestLayout();
1533    }
1534
1535    /**
1536     * Returns the padding between the compound drawables and the text.
1537     */
1538    public int getCompoundDrawablePadding() {
1539        final Drawables dr = mDrawables;
1540        return dr != null ? dr.mDrawablePadding : 0;
1541    }
1542
1543    @Override
1544    public void setPadding(int left, int top, int right, int bottom) {
1545        if (left != mPaddingLeft ||
1546            right != mPaddingRight ||
1547            top != mPaddingTop ||
1548            bottom != mPaddingBottom) {
1549            nullLayouts();
1550        }
1551
1552        // the super call will requestLayout()
1553        super.setPadding(left, top, right, bottom);
1554        invalidate();
1555    }
1556
1557    /**
1558     * Gets the autolink mask of the text.  See {@link
1559     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1560     * possible values.
1561     *
1562     * @attr ref android.R.styleable#TextView_autoLink
1563     */
1564    public final int getAutoLinkMask() {
1565        return mAutoLinkMask;
1566    }
1567
1568    /**
1569     * Sets the text color, size, style, hint color, and highlight color
1570     * from the specified TextAppearance resource.
1571     */
1572    public void setTextAppearance(Context context, int resid) {
1573        TypedArray appearance =
1574            context.obtainStyledAttributes(resid,
1575                                           com.android.internal.R.styleable.TextAppearance);
1576
1577        int color;
1578        ColorStateList colors;
1579        int ts;
1580
1581        color = appearance.getColor(com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
1582        if (color != 0) {
1583            setHighlightColor(color);
1584        }
1585
1586        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1587                                              TextAppearance_textColor);
1588        if (colors != null) {
1589            setTextColor(colors);
1590        }
1591
1592        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
1593                                              TextAppearance_textSize, 0);
1594        if (ts != 0) {
1595            setRawTextSize(ts);
1596        }
1597
1598        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1599                                              TextAppearance_textColorHint);
1600        if (colors != null) {
1601            setHintTextColor(colors);
1602        }
1603
1604        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1605                                              TextAppearance_textColorLink);
1606        if (colors != null) {
1607            setLinkTextColor(colors);
1608        }
1609
1610        int typefaceIndex, styleIndex;
1611
1612        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
1613                                          TextAppearance_typeface, -1);
1614        styleIndex = appearance.getInt(com.android.internal.R.styleable.
1615                                       TextAppearance_textStyle, -1);
1616
1617        setTypefaceByIndex(typefaceIndex, styleIndex);
1618        appearance.recycle();
1619    }
1620
1621    /**
1622     * @return the size (in pixels) of the default text size in this TextView.
1623     */
1624    public float getTextSize() {
1625        return mTextPaint.getTextSize();
1626    }
1627
1628    /**
1629     * Set the default text size to the given value, interpreted as "scaled
1630     * pixel" units.  This size is adjusted based on the current density and
1631     * user font size preference.
1632     *
1633     * @param size The scaled pixel size.
1634     *
1635     * @attr ref android.R.styleable#TextView_textSize
1636     */
1637    @android.view.RemotableViewMethod
1638    public void setTextSize(float size) {
1639        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
1640    }
1641
1642    /**
1643     * Set the default text size to a given unit and value.  See {@link
1644     * TypedValue} for the possible dimension units.
1645     *
1646     * @param unit The desired dimension unit.
1647     * @param size The desired size in the given units.
1648     *
1649     * @attr ref android.R.styleable#TextView_textSize
1650     */
1651    public void setTextSize(int unit, float size) {
1652        Context c = getContext();
1653        Resources r;
1654
1655        if (c == null)
1656            r = Resources.getSystem();
1657        else
1658            r = c.getResources();
1659
1660        setRawTextSize(TypedValue.applyDimension(
1661            unit, size, r.getDisplayMetrics()));
1662    }
1663
1664    private void setRawTextSize(float size) {
1665        if (size != mTextPaint.getTextSize()) {
1666            mTextPaint.setTextSize(size);
1667
1668            if (mLayout != null) {
1669                nullLayouts();
1670                requestLayout();
1671                invalidate();
1672            }
1673        }
1674    }
1675
1676    /**
1677     * @return the extent by which text is currently being stretched
1678     * horizontally.  This will usually be 1.
1679     */
1680    public float getTextScaleX() {
1681        return mTextPaint.getTextScaleX();
1682    }
1683
1684    /**
1685     * Sets the extent by which text should be stretched horizontally.
1686     *
1687     * @attr ref android.R.styleable#TextView_textScaleX
1688     */
1689    @android.view.RemotableViewMethod
1690    public void setTextScaleX(float size) {
1691        if (size != mTextPaint.getTextScaleX()) {
1692            mUserSetTextScaleX = true;
1693            mTextPaint.setTextScaleX(size);
1694
1695            if (mLayout != null) {
1696                nullLayouts();
1697                requestLayout();
1698                invalidate();
1699            }
1700        }
1701    }
1702
1703    /**
1704     * Sets the typeface and style in which the text should be displayed.
1705     * Note that not all Typeface families actually have bold and italic
1706     * variants, so you may need to use
1707     * {@link #setTypeface(Typeface, int)} to get the appearance
1708     * that you actually want.
1709     *
1710     * @attr ref android.R.styleable#TextView_typeface
1711     * @attr ref android.R.styleable#TextView_textStyle
1712     */
1713    public void setTypeface(Typeface tf) {
1714        if (mTextPaint.getTypeface() != tf) {
1715            mTextPaint.setTypeface(tf);
1716
1717            if (mLayout != null) {
1718                nullLayouts();
1719                requestLayout();
1720                invalidate();
1721            }
1722        }
1723    }
1724
1725    /**
1726     * @return the current typeface and style in which the text is being
1727     * displayed.
1728     */
1729    public Typeface getTypeface() {
1730        return mTextPaint.getTypeface();
1731    }
1732
1733    /**
1734     * Sets the text color for all the states (normal, selected,
1735     * focused) to be this color.
1736     *
1737     * @attr ref android.R.styleable#TextView_textColor
1738     */
1739    @android.view.RemotableViewMethod
1740    public void setTextColor(int color) {
1741        mTextColor = ColorStateList.valueOf(color);
1742        updateTextColors();
1743    }
1744
1745    /**
1746     * Sets the text color.
1747     *
1748     * @attr ref android.R.styleable#TextView_textColor
1749     */
1750    public void setTextColor(ColorStateList colors) {
1751        if (colors == null) {
1752            throw new NullPointerException();
1753        }
1754
1755        mTextColor = colors;
1756        updateTextColors();
1757    }
1758
1759    /**
1760     * Return the set of text colors.
1761     *
1762     * @return Returns the set of text colors.
1763     */
1764    public final ColorStateList getTextColors() {
1765        return mTextColor;
1766    }
1767
1768    /**
1769     * <p>Return the current color selected for normal text.</p>
1770     *
1771     * @return Returns the current text color.
1772     */
1773    public final int getCurrentTextColor() {
1774        return mCurTextColor;
1775    }
1776
1777    /**
1778     * Sets the color used to display the selection highlight.
1779     *
1780     * @attr ref android.R.styleable#TextView_textColorHighlight
1781     */
1782    @android.view.RemotableViewMethod
1783    public void setHighlightColor(int color) {
1784        if (mHighlightColor != color) {
1785            mHighlightColor = color;
1786            invalidate();
1787        }
1788    }
1789
1790    /**
1791     * Gives the text a shadow of the specified radius and color, the specified
1792     * distance from its normal position.
1793     *
1794     * @attr ref android.R.styleable#TextView_shadowColor
1795     * @attr ref android.R.styleable#TextView_shadowDx
1796     * @attr ref android.R.styleable#TextView_shadowDy
1797     * @attr ref android.R.styleable#TextView_shadowRadius
1798     */
1799    public void setShadowLayer(float radius, float dx, float dy, int color) {
1800        mTextPaint.setShadowLayer(radius, dx, dy, color);
1801
1802        mShadowRadius = radius;
1803        mShadowDx = dx;
1804        mShadowDy = dy;
1805
1806        invalidate();
1807    }
1808
1809    /**
1810     * @return the base paint used for the text.  Please use this only to
1811     * consult the Paint's properties and not to change them.
1812     */
1813    public TextPaint getPaint() {
1814        return mTextPaint;
1815    }
1816
1817    /**
1818     * Sets the autolink mask of the text.  See {@link
1819     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1820     * possible values.
1821     *
1822     * @attr ref android.R.styleable#TextView_autoLink
1823     */
1824    @android.view.RemotableViewMethod
1825    public final void setAutoLinkMask(int mask) {
1826        mAutoLinkMask = mask;
1827    }
1828
1829    /**
1830     * Sets whether the movement method will automatically be set to
1831     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1832     * set to nonzero and links are detected in {@link #setText}.
1833     * The default is true.
1834     *
1835     * @attr ref android.R.styleable#TextView_linksClickable
1836     */
1837    @android.view.RemotableViewMethod
1838    public final void setLinksClickable(boolean whether) {
1839        mLinksClickable = whether;
1840    }
1841
1842    /**
1843     * Returns whether the movement method will automatically be set to
1844     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1845     * set to nonzero and links are detected in {@link #setText}.
1846     * The default is true.
1847     *
1848     * @attr ref android.R.styleable#TextView_linksClickable
1849     */
1850    public final boolean getLinksClickable() {
1851        return mLinksClickable;
1852    }
1853
1854    /**
1855     * Returns the list of URLSpans attached to the text
1856     * (by {@link Linkify} or otherwise) if any.  You can call
1857     * {@link URLSpan#getURL} on them to find where they link to
1858     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
1859     * to find the region of the text they are attached to.
1860     */
1861    public URLSpan[] getUrls() {
1862        if (mText instanceof Spanned) {
1863            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
1864        } else {
1865            return new URLSpan[0];
1866        }
1867    }
1868
1869    /**
1870     * Sets the color of the hint text.
1871     *
1872     * @attr ref android.R.styleable#TextView_textColorHint
1873     */
1874    @android.view.RemotableViewMethod
1875    public final void setHintTextColor(int color) {
1876        mHintTextColor = ColorStateList.valueOf(color);
1877        updateTextColors();
1878    }
1879
1880    /**
1881     * Sets the color of the hint text.
1882     *
1883     * @attr ref android.R.styleable#TextView_textColorHint
1884     */
1885    public final void setHintTextColor(ColorStateList colors) {
1886        mHintTextColor = colors;
1887        updateTextColors();
1888    }
1889
1890    /**
1891     * <p>Return the color used to paint the hint text.</p>
1892     *
1893     * @return Returns the list of hint text colors.
1894     */
1895    public final ColorStateList getHintTextColors() {
1896        return mHintTextColor;
1897    }
1898
1899    /**
1900     * <p>Return the current color selected to paint the hint text.</p>
1901     *
1902     * @return Returns the current hint text color.
1903     */
1904    public final int getCurrentHintTextColor() {
1905        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
1906    }
1907
1908    /**
1909     * Sets the color of links in the text.
1910     *
1911     * @attr ref android.R.styleable#TextView_textColorLink
1912     */
1913    @android.view.RemotableViewMethod
1914    public final void setLinkTextColor(int color) {
1915        mLinkTextColor = ColorStateList.valueOf(color);
1916        updateTextColors();
1917    }
1918
1919    /**
1920     * Sets the color of links in the text.
1921     *
1922     * @attr ref android.R.styleable#TextView_textColorLink
1923     */
1924    public final void setLinkTextColor(ColorStateList colors) {
1925        mLinkTextColor = colors;
1926        updateTextColors();
1927    }
1928
1929    /**
1930     * <p>Returns the color used to paint links in the text.</p>
1931     *
1932     * @return Returns the list of link text colors.
1933     */
1934    public final ColorStateList getLinkTextColors() {
1935        return mLinkTextColor;
1936    }
1937
1938    /**
1939     * Sets the horizontal alignment of the text and the
1940     * vertical gravity that will be used when there is extra space
1941     * in the TextView beyond what is required for the text itself.
1942     *
1943     * @see android.view.Gravity
1944     * @attr ref android.R.styleable#TextView_gravity
1945     */
1946    public void setGravity(int gravity) {
1947        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == 0) {
1948            gravity |= Gravity.LEFT;
1949        }
1950        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
1951            gravity |= Gravity.TOP;
1952        }
1953
1954        boolean newLayout = false;
1955
1956        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) !=
1957            (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK)) {
1958            newLayout = true;
1959        }
1960
1961        if (gravity != mGravity) {
1962            invalidate();
1963        }
1964
1965        mGravity = gravity;
1966
1967        if (mLayout != null && newLayout) {
1968            // XXX this is heavy-handed because no actual content changes.
1969            int want = mLayout.getWidth();
1970            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
1971
1972            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
1973                          mRight - mLeft - getCompoundPaddingLeft() -
1974                          getCompoundPaddingRight(), true);
1975        }
1976    }
1977
1978    /**
1979     * Returns the horizontal and vertical alignment of this TextView.
1980     *
1981     * @see android.view.Gravity
1982     * @attr ref android.R.styleable#TextView_gravity
1983     */
1984    public int getGravity() {
1985        return mGravity;
1986    }
1987
1988    /**
1989     * @return the flags on the Paint being used to display the text.
1990     * @see Paint#getFlags
1991     */
1992    public int getPaintFlags() {
1993        return mTextPaint.getFlags();
1994    }
1995
1996    /**
1997     * Sets flags on the Paint being used to display the text and
1998     * reflows the text if they are different from the old flags.
1999     * @see Paint#setFlags
2000     */
2001    @android.view.RemotableViewMethod
2002    public void setPaintFlags(int flags) {
2003        if (mTextPaint.getFlags() != flags) {
2004            mTextPaint.setFlags(flags);
2005
2006            if (mLayout != null) {
2007                nullLayouts();
2008                requestLayout();
2009                invalidate();
2010            }
2011        }
2012    }
2013
2014    /**
2015     * Sets whether the text should be allowed to be wider than the
2016     * View is.  If false, it will be wrapped to the width of the View.
2017     *
2018     * @attr ref android.R.styleable#TextView_scrollHorizontally
2019     */
2020    public void setHorizontallyScrolling(boolean whether) {
2021        mHorizontallyScrolling = whether;
2022
2023        if (mLayout != null) {
2024            nullLayouts();
2025            requestLayout();
2026            invalidate();
2027        }
2028    }
2029
2030    /**
2031     * Makes the TextView at least this many lines tall
2032     *
2033     * @attr ref android.R.styleable#TextView_minLines
2034     */
2035    @android.view.RemotableViewMethod
2036    public void setMinLines(int minlines) {
2037        mMinimum = minlines;
2038        mMinMode = LINES;
2039
2040        requestLayout();
2041        invalidate();
2042    }
2043
2044    /**
2045     * Makes the TextView at least this many pixels tall
2046     *
2047     * @attr ref android.R.styleable#TextView_minHeight
2048     */
2049    @android.view.RemotableViewMethod
2050    public void setMinHeight(int minHeight) {
2051        mMinimum = minHeight;
2052        mMinMode = PIXELS;
2053
2054        requestLayout();
2055        invalidate();
2056    }
2057
2058    /**
2059     * Makes the TextView at most this many lines tall
2060     *
2061     * @attr ref android.R.styleable#TextView_maxLines
2062     */
2063    @android.view.RemotableViewMethod
2064    public void setMaxLines(int maxlines) {
2065        mMaximum = maxlines;
2066        mMaxMode = LINES;
2067
2068        requestLayout();
2069        invalidate();
2070    }
2071
2072    /**
2073     * Makes the TextView at most this many pixels tall
2074     *
2075     * @attr ref android.R.styleable#TextView_maxHeight
2076     */
2077    @android.view.RemotableViewMethod
2078    public void setMaxHeight(int maxHeight) {
2079        mMaximum = maxHeight;
2080        mMaxMode = PIXELS;
2081
2082        requestLayout();
2083        invalidate();
2084    }
2085
2086    /**
2087     * Makes the TextView exactly this many lines tall
2088     *
2089     * @attr ref android.R.styleable#TextView_lines
2090     */
2091    @android.view.RemotableViewMethod
2092    public void setLines(int lines) {
2093        mMaximum = mMinimum = lines;
2094        mMaxMode = mMinMode = LINES;
2095
2096        requestLayout();
2097        invalidate();
2098    }
2099
2100    /**
2101     * Makes the TextView exactly this many pixels tall.
2102     * You could do the same thing by specifying this number in the
2103     * LayoutParams.
2104     *
2105     * @attr ref android.R.styleable#TextView_height
2106     */
2107    @android.view.RemotableViewMethod
2108    public void setHeight(int pixels) {
2109        mMaximum = mMinimum = pixels;
2110        mMaxMode = mMinMode = PIXELS;
2111
2112        requestLayout();
2113        invalidate();
2114    }
2115
2116    /**
2117     * Makes the TextView at least this many ems wide
2118     *
2119     * @attr ref android.R.styleable#TextView_minEms
2120     */
2121    @android.view.RemotableViewMethod
2122    public void setMinEms(int minems) {
2123        mMinWidth = minems;
2124        mMinWidthMode = EMS;
2125
2126        requestLayout();
2127        invalidate();
2128    }
2129
2130    /**
2131     * Makes the TextView at least this many pixels wide
2132     *
2133     * @attr ref android.R.styleable#TextView_minWidth
2134     */
2135    @android.view.RemotableViewMethod
2136    public void setMinWidth(int minpixels) {
2137        mMinWidth = minpixels;
2138        mMinWidthMode = PIXELS;
2139
2140        requestLayout();
2141        invalidate();
2142    }
2143
2144    /**
2145     * Makes the TextView at most this many ems wide
2146     *
2147     * @attr ref android.R.styleable#TextView_maxEms
2148     */
2149    @android.view.RemotableViewMethod
2150    public void setMaxEms(int maxems) {
2151        mMaxWidth = maxems;
2152        mMaxWidthMode = EMS;
2153
2154        requestLayout();
2155        invalidate();
2156    }
2157
2158    /**
2159     * Makes the TextView at most this many pixels wide
2160     *
2161     * @attr ref android.R.styleable#TextView_maxWidth
2162     */
2163    @android.view.RemotableViewMethod
2164    public void setMaxWidth(int maxpixels) {
2165        mMaxWidth = maxpixels;
2166        mMaxWidthMode = PIXELS;
2167
2168        requestLayout();
2169        invalidate();
2170    }
2171
2172    /**
2173     * Makes the TextView exactly this many ems wide
2174     *
2175     * @attr ref android.R.styleable#TextView_ems
2176     */
2177    @android.view.RemotableViewMethod
2178    public void setEms(int ems) {
2179        mMaxWidth = mMinWidth = ems;
2180        mMaxWidthMode = mMinWidthMode = EMS;
2181
2182        requestLayout();
2183        invalidate();
2184    }
2185
2186    /**
2187     * Makes the TextView exactly this many pixels wide.
2188     * You could do the same thing by specifying this number in the
2189     * LayoutParams.
2190     *
2191     * @attr ref android.R.styleable#TextView_width
2192     */
2193    @android.view.RemotableViewMethod
2194    public void setWidth(int pixels) {
2195        mMaxWidth = mMinWidth = pixels;
2196        mMaxWidthMode = mMinWidthMode = PIXELS;
2197
2198        requestLayout();
2199        invalidate();
2200    }
2201
2202
2203    /**
2204     * Sets line spacing for this TextView.  Each line will have its height
2205     * multiplied by <code>mult</code> and have <code>add</code> added to it.
2206     *
2207     * @attr ref android.R.styleable#TextView_lineSpacingExtra
2208     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
2209     */
2210    public void setLineSpacing(float add, float mult) {
2211        mSpacingMult = mult;
2212        mSpacingAdd = add;
2213
2214        if (mLayout != null) {
2215            nullLayouts();
2216            requestLayout();
2217            invalidate();
2218        }
2219    }
2220
2221    /**
2222     * Convenience method: Append the specified text to the TextView's
2223     * display buffer, upgrading it to BufferType.EDITABLE if it was
2224     * not already editable.
2225     */
2226    public final void append(CharSequence text) {
2227        append(text, 0, text.length());
2228    }
2229
2230    /**
2231     * Convenience method: Append the specified text slice to the TextView's
2232     * display buffer, upgrading it to BufferType.EDITABLE if it was
2233     * not already editable.
2234     */
2235    public void append(CharSequence text, int start, int end) {
2236        if (!(mText instanceof Editable)) {
2237            setText(mText, BufferType.EDITABLE);
2238        }
2239
2240        ((Editable) mText).append(text, start, end);
2241    }
2242
2243    private void updateTextColors() {
2244        boolean inval = false;
2245        int color = mTextColor.getColorForState(getDrawableState(), 0);
2246        if (color != mCurTextColor) {
2247            mCurTextColor = color;
2248            inval = true;
2249        }
2250        if (mLinkTextColor != null) {
2251            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
2252            if (color != mTextPaint.linkColor) {
2253                mTextPaint.linkColor = color;
2254                inval = true;
2255            }
2256        }
2257        if (mHintTextColor != null) {
2258            color = mHintTextColor.getColorForState(getDrawableState(), 0);
2259            if (color != mCurHintTextColor && mText.length() == 0) {
2260                mCurHintTextColor = color;
2261                inval = true;
2262            }
2263        }
2264        if (inval) {
2265            invalidate();
2266        }
2267    }
2268
2269    @Override
2270    protected void drawableStateChanged() {
2271        super.drawableStateChanged();
2272        if (mTextColor != null && mTextColor.isStateful()
2273                || (mHintTextColor != null && mHintTextColor.isStateful())
2274                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
2275            updateTextColors();
2276        }
2277
2278        final Drawables dr = mDrawables;
2279        if (dr != null) {
2280            int[] state = getDrawableState();
2281            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
2282                dr.mDrawableTop.setState(state);
2283            }
2284            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
2285                dr.mDrawableBottom.setState(state);
2286            }
2287            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
2288                dr.mDrawableLeft.setState(state);
2289            }
2290            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
2291                dr.mDrawableRight.setState(state);
2292            }
2293        }
2294    }
2295
2296    /**
2297     * User interface state that is stored by TextView for implementing
2298     * {@link View#onSaveInstanceState}.
2299     */
2300    public static class SavedState extends BaseSavedState {
2301        int selStart;
2302        int selEnd;
2303        CharSequence text;
2304        boolean frozenWithFocus;
2305        CharSequence error;
2306
2307        SavedState(Parcelable superState) {
2308            super(superState);
2309        }
2310
2311        @Override
2312        public void writeToParcel(Parcel out, int flags) {
2313            super.writeToParcel(out, flags);
2314            out.writeInt(selStart);
2315            out.writeInt(selEnd);
2316            out.writeInt(frozenWithFocus ? 1 : 0);
2317            TextUtils.writeToParcel(text, out, flags);
2318
2319            if (error == null) {
2320                out.writeInt(0);
2321            } else {
2322                out.writeInt(1);
2323                TextUtils.writeToParcel(error, out, flags);
2324            }
2325        }
2326
2327        @Override
2328        public String toString() {
2329            String str = "TextView.SavedState{"
2330                    + Integer.toHexString(System.identityHashCode(this))
2331                    + " start=" + selStart + " end=" + selEnd;
2332            if (text != null) {
2333                str += " text=" + text;
2334            }
2335            return str + "}";
2336        }
2337
2338        public static final Parcelable.Creator<SavedState> CREATOR
2339                = new Parcelable.Creator<SavedState>() {
2340            public SavedState createFromParcel(Parcel in) {
2341                return new SavedState(in);
2342            }
2343
2344            public SavedState[] newArray(int size) {
2345                return new SavedState[size];
2346            }
2347        };
2348
2349        private SavedState(Parcel in) {
2350            super(in);
2351            selStart = in.readInt();
2352            selEnd = in.readInt();
2353            frozenWithFocus = (in.readInt() != 0);
2354            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2355
2356            if (in.readInt() != 0) {
2357                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2358            }
2359        }
2360    }
2361
2362    @Override
2363    public Parcelable onSaveInstanceState() {
2364        Parcelable superState = super.onSaveInstanceState();
2365
2366        // Save state if we are forced to
2367        boolean save = mFreezesText;
2368        int start = 0;
2369        int end = 0;
2370
2371        if (mText != null) {
2372            start = Selection.getSelectionStart(mText);
2373            end = Selection.getSelectionEnd(mText);
2374            if (start >= 0 || end >= 0) {
2375                // Or save state if there is a selection
2376                save = true;
2377            }
2378        }
2379
2380        if (save) {
2381            SavedState ss = new SavedState(superState);
2382            // XXX Should also save the current scroll position!
2383            ss.selStart = start;
2384            ss.selEnd = end;
2385
2386            if (mText instanceof Spanned) {
2387                /*
2388                 * Calling setText() strips off any ChangeWatchers;
2389                 * strip them now to avoid leaking references.
2390                 * But do it to a copy so that if there are any
2391                 * further changes to the text of this view, it
2392                 * won't get into an inconsistent state.
2393                 */
2394
2395                Spannable sp = new SpannableString(mText);
2396
2397                for (ChangeWatcher cw :
2398                     sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
2399                    sp.removeSpan(cw);
2400                }
2401
2402                ss.text = sp;
2403            } else {
2404                ss.text = mText.toString();
2405            }
2406
2407            if (isFocused() && start >= 0 && end >= 0) {
2408                ss.frozenWithFocus = true;
2409            }
2410
2411            ss.error = mError;
2412
2413            return ss;
2414        }
2415
2416        return superState;
2417    }
2418
2419    @Override
2420    public void onRestoreInstanceState(Parcelable state) {
2421        if (!(state instanceof SavedState)) {
2422            super.onRestoreInstanceState(state);
2423            return;
2424        }
2425
2426        SavedState ss = (SavedState)state;
2427        super.onRestoreInstanceState(ss.getSuperState());
2428
2429        // XXX restore buffer type too, as well as lots of other stuff
2430        if (ss.text != null) {
2431            setText(ss.text);
2432        }
2433
2434        if (ss.selStart >= 0 && ss.selEnd >= 0) {
2435            if (mText instanceof Spannable) {
2436                int len = mText.length();
2437
2438                if (ss.selStart > len || ss.selEnd > len) {
2439                    String restored = "";
2440
2441                    if (ss.text != null) {
2442                        restored = "(restored) ";
2443                    }
2444
2445                    Log.e("TextView", "Saved cursor position " + ss.selStart +
2446                          "/" + ss.selEnd + " out of range for " + restored +
2447                          "text " + mText);
2448                } else {
2449                    Selection.setSelection((Spannable) mText, ss.selStart,
2450                                           ss.selEnd);
2451
2452                    if (ss.frozenWithFocus) {
2453                        mFrozenWithFocus = true;
2454                    }
2455                }
2456            }
2457        }
2458
2459        if (ss.error != null) {
2460            final CharSequence error = ss.error;
2461            // Display the error later, after the first layout pass
2462            post(new Runnable() {
2463                public void run() {
2464                    setError(error);
2465                }
2466            });
2467        }
2468    }
2469
2470    /**
2471     * Control whether this text view saves its entire text contents when
2472     * freezing to an icicle, in addition to dynamic state such as cursor
2473     * position.  By default this is false, not saving the text.  Set to true
2474     * if the text in the text view is not being saved somewhere else in
2475     * persistent storage (such as in a content provider) so that if the
2476     * view is later thawed the user will not lose their data.
2477     *
2478     * @param freezesText Controls whether a frozen icicle should include the
2479     * entire text data: true to include it, false to not.
2480     *
2481     * @attr ref android.R.styleable#TextView_freezesText
2482     */
2483    @android.view.RemotableViewMethod
2484    public void setFreezesText(boolean freezesText) {
2485        mFreezesText = freezesText;
2486    }
2487
2488    /**
2489     * Return whether this text view is including its entire text contents
2490     * in frozen icicles.
2491     *
2492     * @return Returns true if text is included, false if it isn't.
2493     *
2494     * @see #setFreezesText
2495     */
2496    public boolean getFreezesText() {
2497        return mFreezesText;
2498    }
2499
2500    ///////////////////////////////////////////////////////////////////////////
2501
2502    /**
2503     * Sets the Factory used to create new Editables.
2504     */
2505    public final void setEditableFactory(Editable.Factory factory) {
2506        mEditableFactory = factory;
2507        setText(mText);
2508    }
2509
2510    /**
2511     * Sets the Factory used to create new Spannables.
2512     */
2513    public final void setSpannableFactory(Spannable.Factory factory) {
2514        mSpannableFactory = factory;
2515        setText(mText);
2516    }
2517
2518    /**
2519     * Sets the string value of the TextView. TextView <em>does not</em> accept
2520     * HTML-like formatting, which you can do with text strings in XML resource files.
2521     * To style your strings, attach android.text.style.* objects to a
2522     * {@link android.text.SpannableString SpannableString}, or see the
2523     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
2524     * Available Resource Types</a> documentation for an example of setting
2525     * formatted text in the XML resource file.
2526     *
2527     * @attr ref android.R.styleable#TextView_text
2528     */
2529    @android.view.RemotableViewMethod
2530    public final void setText(CharSequence text) {
2531        setText(text, mBufferType);
2532    }
2533
2534    /**
2535     * Like {@link #setText(CharSequence)},
2536     * except that the cursor position (if any) is retained in the new text.
2537     *
2538     * @param text The new text to place in the text view.
2539     *
2540     * @see #setText(CharSequence)
2541     */
2542    @android.view.RemotableViewMethod
2543    public final void setTextKeepState(CharSequence text) {
2544        setTextKeepState(text, mBufferType);
2545    }
2546
2547    /**
2548     * Sets the text that this TextView is to display (see
2549     * {@link #setText(CharSequence)}) and also sets whether it is stored
2550     * in a styleable/spannable buffer and whether it is editable.
2551     *
2552     * @attr ref android.R.styleable#TextView_text
2553     * @attr ref android.R.styleable#TextView_bufferType
2554     */
2555    public void setText(CharSequence text, BufferType type) {
2556        setText(text, type, true, 0);
2557
2558        if (mCharWrapper != null) {
2559            mCharWrapper.mChars = null;
2560        }
2561    }
2562
2563    private void setText(CharSequence text, BufferType type,
2564                         boolean notifyBefore, int oldlen) {
2565        if (text == null) {
2566            text = "";
2567        }
2568
2569        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
2570
2571        if (text instanceof Spanned &&
2572            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
2573            setHorizontalFadingEdgeEnabled(true);
2574            setEllipsize(TextUtils.TruncateAt.MARQUEE);
2575        }
2576
2577        int n = mFilters.length;
2578        for (int i = 0; i < n; i++) {
2579            CharSequence out = mFilters[i].filter(text, 0, text.length(),
2580                                                  EMPTY_SPANNED, 0, 0);
2581            if (out != null) {
2582                text = out;
2583            }
2584        }
2585
2586        if (notifyBefore) {
2587            if (mText != null) {
2588                oldlen = mText.length();
2589                sendBeforeTextChanged(mText, 0, oldlen, text.length());
2590            } else {
2591                sendBeforeTextChanged("", 0, 0, text.length());
2592            }
2593        }
2594
2595        boolean needEditableForNotification = false;
2596
2597        if (mListeners != null && mListeners.size() != 0) {
2598            needEditableForNotification = true;
2599        }
2600
2601        if (type == BufferType.EDITABLE || mInput != null ||
2602            needEditableForNotification) {
2603            Editable t = mEditableFactory.newEditable(text);
2604            text = t;
2605            setFilters(t, mFilters);
2606            InputMethodManager imm = InputMethodManager.peekInstance();
2607            if (imm != null) imm.restartInput(this);
2608        } else if (type == BufferType.SPANNABLE || mMovement != null) {
2609            text = mSpannableFactory.newSpannable(text);
2610        } else if (!(text instanceof CharWrapper)) {
2611            text = TextUtils.stringOrSpannedString(text);
2612        }
2613
2614        if (mAutoLinkMask != 0) {
2615            Spannable s2;
2616
2617            if (type == BufferType.EDITABLE || text instanceof Spannable) {
2618                s2 = (Spannable) text;
2619            } else {
2620                s2 = mSpannableFactory.newSpannable(text);
2621            }
2622
2623            if (Linkify.addLinks(s2, mAutoLinkMask)) {
2624                text = s2;
2625                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
2626
2627                /*
2628                 * We must go ahead and set the text before changing the
2629                 * movement method, because setMovementMethod() may call
2630                 * setText() again to try to upgrade the buffer type.
2631                 */
2632                mText = text;
2633
2634                if (mLinksClickable) {
2635                    setMovementMethod(LinkMovementMethod.getInstance());
2636                }
2637            }
2638        }
2639
2640        mBufferType = type;
2641        mText = text;
2642
2643        if (mTransformation == null)
2644            mTransformed = text;
2645        else
2646            mTransformed = mTransformation.getTransformation(text, this);
2647
2648        final int textLength = text.length();
2649
2650        if (text instanceof Spannable) {
2651            Spannable sp = (Spannable) text;
2652
2653            // Remove any ChangeWatchers that might have come
2654            // from other TextViews.
2655            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
2656            final int count = watchers.length;
2657            for (int i = 0; i < count; i++)
2658                sp.removeSpan(watchers[i]);
2659
2660            if (mChangeWatcher == null)
2661                mChangeWatcher = new ChangeWatcher();
2662
2663            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
2664                       (PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
2665
2666            if (mInput != null) {
2667                sp.setSpan(mInput, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2668            }
2669
2670            if (mTransformation != null) {
2671                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2672
2673            }
2674
2675            if (mMovement != null) {
2676                mMovement.initialize(this, (Spannable) text);
2677
2678                /*
2679                 * Initializing the movement method will have set the
2680                 * selection, so reset mSelectionMoved to keep that from
2681                 * interfering with the normal on-focus selection-setting.
2682                 */
2683                mSelectionMoved = false;
2684            }
2685        }
2686
2687        if (mLayout != null) {
2688            checkForRelayout();
2689        }
2690
2691        sendOnTextChanged(text, 0, oldlen, textLength);
2692        onTextChanged(text, 0, oldlen, textLength);
2693
2694        if (needEditableForNotification) {
2695            sendAfterTextChanged((Editable) text);
2696        }
2697    }
2698
2699    /**
2700     * Sets the TextView to display the specified slice of the specified
2701     * char array.  You must promise that you will not change the contents
2702     * of the array except for right before another call to setText(),
2703     * since the TextView has no way to know that the text
2704     * has changed and that it needs to invalidate and re-layout.
2705     */
2706    public final void setText(char[] text, int start, int len) {
2707        int oldlen = 0;
2708
2709        if (start < 0 || len < 0 || start + len > text.length) {
2710            throw new IndexOutOfBoundsException(start + ", " + len);
2711        }
2712
2713        /*
2714         * We must do the before-notification here ourselves because if
2715         * the old text is a CharWrapper we destroy it before calling
2716         * into the normal path.
2717         */
2718        if (mText != null) {
2719            oldlen = mText.length();
2720            sendBeforeTextChanged(mText, 0, oldlen, len);
2721        } else {
2722            sendBeforeTextChanged("", 0, 0, len);
2723        }
2724
2725        if (mCharWrapper == null) {
2726            mCharWrapper = new CharWrapper(text, start, len);
2727        } else {
2728            mCharWrapper.set(text, start, len);
2729        }
2730
2731        setText(mCharWrapper, mBufferType, false, oldlen);
2732    }
2733
2734    private static class CharWrapper
2735            implements CharSequence, GetChars, GraphicsOperations {
2736        private char[] mChars;
2737        private int mStart, mLength;
2738
2739        public CharWrapper(char[] chars, int start, int len) {
2740            mChars = chars;
2741            mStart = start;
2742            mLength = len;
2743        }
2744
2745        /* package */ void set(char[] chars, int start, int len) {
2746            mChars = chars;
2747            mStart = start;
2748            mLength = len;
2749        }
2750
2751        public int length() {
2752            return mLength;
2753        }
2754
2755        public char charAt(int off) {
2756            return mChars[off + mStart];
2757        }
2758
2759        public String toString() {
2760            return new String(mChars, mStart, mLength);
2761        }
2762
2763        public CharSequence subSequence(int start, int end) {
2764            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2765                throw new IndexOutOfBoundsException(start + ", " + end);
2766            }
2767
2768            return new String(mChars, start + mStart, end - start);
2769        }
2770
2771        public void getChars(int start, int end, char[] buf, int off) {
2772            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2773                throw new IndexOutOfBoundsException(start + ", " + end);
2774            }
2775
2776            System.arraycopy(mChars, start + mStart, buf, off, end - start);
2777        }
2778
2779        public void drawText(Canvas c, int start, int end,
2780                             float x, float y, Paint p) {
2781            c.drawText(mChars, start + mStart, end - start, x, y, p);
2782        }
2783
2784        public float measureText(int start, int end, Paint p) {
2785            return p.measureText(mChars, start + mStart, end - start);
2786        }
2787
2788        public int getTextWidths(int start, int end, float[] widths, Paint p) {
2789            return p.getTextWidths(mChars, start + mStart, end - start, widths);
2790        }
2791    }
2792
2793    /**
2794     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
2795     * except that the cursor position (if any) is retained in the new text.
2796     *
2797     * @see #setText(CharSequence, android.widget.TextView.BufferType)
2798     */
2799    public final void setTextKeepState(CharSequence text, BufferType type) {
2800        int start = getSelectionStart();
2801        int end = getSelectionEnd();
2802        int len = text.length();
2803
2804        setText(text, type);
2805
2806        if (start >= 0 || end >= 0) {
2807            if (mText instanceof Spannable) {
2808                Selection.setSelection((Spannable) mText,
2809                                       Math.max(0, Math.min(start, len)),
2810                                       Math.max(0, Math.min(end, len)));
2811            }
2812        }
2813    }
2814
2815    @android.view.RemotableViewMethod
2816    public final void setText(int resid) {
2817        setText(getContext().getResources().getText(resid));
2818    }
2819
2820    public final void setText(int resid, BufferType type) {
2821        setText(getContext().getResources().getText(resid), type);
2822    }
2823
2824    /**
2825     * Sets the text to be displayed when the text of the TextView is empty.
2826     * Null means to use the normal empty text. The hint does not currently
2827     * participate in determining the size of the view.
2828     *
2829     * @attr ref android.R.styleable#TextView_hint
2830     */
2831    @android.view.RemotableViewMethod
2832    public final void setHint(CharSequence hint) {
2833        mHint = TextUtils.stringOrSpannedString(hint);
2834
2835        if (mLayout != null) {
2836            checkForRelayout();
2837        }
2838
2839        if (mText.length() == 0) {
2840            invalidate();
2841        }
2842    }
2843
2844    /**
2845     * Sets the text to be displayed when the text of the TextView is empty,
2846     * from a resource.
2847     *
2848     * @attr ref android.R.styleable#TextView_hint
2849     */
2850    @android.view.RemotableViewMethod
2851    public final void setHint(int resid) {
2852        setHint(getContext().getResources().getText(resid));
2853    }
2854
2855    /**
2856     * Returns the hint that is displayed when the text of the TextView
2857     * is empty.
2858     *
2859     * @attr ref android.R.styleable#TextView_hint
2860     */
2861    @ViewDebug.CapturedViewProperty
2862    public CharSequence getHint() {
2863        return mHint;
2864    }
2865
2866    /**
2867     * Set the type of the content with a constant as defined for
2868     * {@link EditorInfo#inputType}.  This will take care of changing
2869     * the key listener, by calling {@link #setKeyListener(KeyListener)}, to
2870     * match the given content type.  If the given content type is
2871     * {@link EditorInfo#TYPE_NULL} then a soft keyboard will
2872     * not be displayed for this text view.
2873     *
2874     * @see #getInputType()
2875     * @see #setRawInputType(int)
2876     * @see android.text.InputType
2877     * @attr ref android.R.styleable#TextView_inputType
2878     */
2879    public void setInputType(int type) {
2880        final boolean wasPassword = isPasswordInputType(mInputType);
2881        final boolean wasVisiblePassword = isVisiblePasswordInputType(mInputType);
2882        setInputType(type, false);
2883        final boolean isPassword = isPasswordInputType(type);
2884        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
2885        boolean forceUpdate = false;
2886        if (isPassword) {
2887            setTransformationMethod(PasswordTransformationMethod.getInstance());
2888            setTypefaceByIndex(MONOSPACE, 0);
2889        } else if (isVisiblePassword) {
2890            if (mTransformation == PasswordTransformationMethod.getInstance()) {
2891                forceUpdate = true;
2892            }
2893            setTypefaceByIndex(MONOSPACE, 0);
2894        } else if (wasPassword || wasVisiblePassword) {
2895            // not in password mode, clean up typeface and transformation
2896            setTypefaceByIndex(-1, -1);
2897            if (mTransformation == PasswordTransformationMethod.getInstance()) {
2898                forceUpdate = true;
2899            }
2900        }
2901
2902        boolean multiLine = (type&(EditorInfo.TYPE_MASK_CLASS
2903                        | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
2904                (EditorInfo.TYPE_CLASS_TEXT
2905                        | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
2906
2907        // We need to update the single line mode if it has changed or we
2908        // were previously in password mode.
2909        if (mSingleLine == multiLine || forceUpdate) {
2910            // Change single line mode, but only change the transformation if
2911            // we are not in password mode.
2912            applySingleLine(!multiLine, !isPassword);
2913        }
2914
2915        InputMethodManager imm = InputMethodManager.peekInstance();
2916        if (imm != null) imm.restartInput(this);
2917    }
2918
2919    private boolean isPasswordInputType(int inputType) {
2920        final int variation = inputType & (EditorInfo.TYPE_MASK_CLASS
2921                | EditorInfo.TYPE_MASK_VARIATION);
2922        return variation
2923                == (EditorInfo.TYPE_CLASS_TEXT
2924                        | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
2925    }
2926
2927    private boolean isVisiblePasswordInputType(int inputType) {
2928        final int variation = inputType & (EditorInfo.TYPE_MASK_CLASS
2929                | EditorInfo.TYPE_MASK_VARIATION);
2930        return variation
2931                == (EditorInfo.TYPE_CLASS_TEXT
2932                        | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
2933    }
2934
2935    /**
2936     * Directly change the content type integer of the text view, without
2937     * modifying any other state.
2938     * @see #setInputType(int)
2939     * @see android.text.InputType
2940     * @attr ref android.R.styleable#TextView_inputType
2941     */
2942    public void setRawInputType(int type) {
2943        mInputType = type;
2944    }
2945
2946    private void setInputType(int type, boolean direct) {
2947        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
2948        KeyListener input;
2949        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
2950            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT)
2951                    != 0;
2952            TextKeyListener.Capitalize cap;
2953            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
2954                cap = TextKeyListener.Capitalize.CHARACTERS;
2955            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
2956                cap = TextKeyListener.Capitalize.WORDS;
2957            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
2958                cap = TextKeyListener.Capitalize.SENTENCES;
2959            } else {
2960                cap = TextKeyListener.Capitalize.NONE;
2961            }
2962            input = TextKeyListener.getInstance(autotext, cap);
2963        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
2964            input = DigitsKeyListener.getInstance(
2965                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
2966                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
2967        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
2968            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
2969                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
2970                    input = DateKeyListener.getInstance();
2971                    break;
2972                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
2973                    input = TimeKeyListener.getInstance();
2974                    break;
2975                default:
2976                    input = DateTimeKeyListener.getInstance();
2977                    break;
2978            }
2979        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
2980            input = DialerKeyListener.getInstance();
2981        } else {
2982            input = TextKeyListener.getInstance();
2983        }
2984        mInputType = type;
2985        if (direct) mInput = input;
2986        else {
2987            setKeyListenerOnly(input);
2988        }
2989    }
2990
2991    /**
2992     * Get the type of the content.
2993     *
2994     * @see #setInputType(int)
2995     * @see android.text.InputType
2996     */
2997    public int getInputType() {
2998        return mInputType;
2999    }
3000
3001    /**
3002     * Change the editor type integer associated with the text view, which
3003     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
3004     * has focus.
3005     * @see #getImeOptions
3006     * @see android.view.inputmethod.EditorInfo
3007     * @attr ref android.R.styleable#TextView_imeOptions
3008     */
3009    public void setImeOptions(int imeOptions) {
3010        if (mInputContentType == null) {
3011            mInputContentType = new InputContentType();
3012        }
3013        mInputContentType.imeOptions = imeOptions;
3014    }
3015
3016    /**
3017     * Get the type of the IME editor.
3018     *
3019     * @see #setImeOptions(int)
3020     * @see android.view.inputmethod.EditorInfo
3021     */
3022    public int getImeOptions() {
3023        return mInputContentType != null
3024                ? mInputContentType.imeOptions : EditorInfo.IME_NULL;
3025    }
3026
3027    /**
3028     * Change the custom IME action associated with the text view, which
3029     * will be reported to an IME with {@link EditorInfo#actionLabel}
3030     * and {@link EditorInfo#actionId} when it has focus.
3031     * @see #getImeActionLabel
3032     * @see #getImeActionId
3033     * @see android.view.inputmethod.EditorInfo
3034     * @attr ref android.R.styleable#TextView_imeActionLabel
3035     * @attr ref android.R.styleable#TextView_imeActionId
3036     */
3037    public void setImeActionLabel(CharSequence label, int actionId) {
3038        if (mInputContentType == null) {
3039            mInputContentType = new InputContentType();
3040        }
3041        mInputContentType.imeActionLabel = label;
3042        mInputContentType.imeActionId = actionId;
3043    }
3044
3045    /**
3046     * Get the IME action label previous set with {@link #setImeActionLabel}.
3047     *
3048     * @see #setImeActionLabel
3049     * @see android.view.inputmethod.EditorInfo
3050     */
3051    public CharSequence getImeActionLabel() {
3052        return mInputContentType != null
3053                ? mInputContentType.imeActionLabel : null;
3054    }
3055
3056    /**
3057     * Get the IME action ID previous set with {@link #setImeActionLabel}.
3058     *
3059     * @see #setImeActionLabel
3060     * @see android.view.inputmethod.EditorInfo
3061     */
3062    public int getImeActionId() {
3063        return mInputContentType != null
3064                ? mInputContentType.imeActionId : 0;
3065    }
3066
3067    /**
3068     * Set a special listener to be called when an action is performed
3069     * on the text view.  This will be called when the enter key is pressed,
3070     * or when an action supplied to the IME is selected by the user.  Setting
3071     * this means that the normal hard key event will not insert a newline
3072     * into the text view, even if it is multi-line; holding down the ALT
3073     * modifier will, however, allow the user to insert a newline character.
3074     */
3075    public void setOnEditorActionListener(OnEditorActionListener l) {
3076        if (mInputContentType == null) {
3077            mInputContentType = new InputContentType();
3078        }
3079        mInputContentType.onEditorActionListener = l;
3080    }
3081
3082    /**
3083     * Called when an attached input method calls
3084     * {@link InputConnection#performEditorAction(int)
3085     * InputConnection.performEditorAction()}
3086     * for this text view.  The default implementation will call your action
3087     * listener supplied to {@link #setOnEditorActionListener}, or perform
3088     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
3089     * EditorInfo.IME_ACTION_NEXT} or {@link EditorInfo#IME_ACTION_DONE
3090     * EditorInfo.IME_ACTION_DONE}.
3091     *
3092     * <p>For backwards compatibility, if no IME options have been set and the
3093     * text view would not normally advance focus on enter, then
3094     * the NEXT and DONE actions received here will be turned into an enter
3095     * key down/up pair to go through the normal key handling.
3096     *
3097     * @param actionCode The code of the action being performed.
3098     *
3099     * @see #setOnEditorActionListener
3100     */
3101    public void onEditorAction(int actionCode) {
3102        final InputContentType ict = mInputContentType;
3103        if (ict != null) {
3104            if (ict.onEditorActionListener != null) {
3105                if (ict.onEditorActionListener.onEditorAction(this,
3106                        actionCode, null)) {
3107                    return;
3108                }
3109            }
3110
3111            // This is the handling for some default action.
3112            // Note that for backwards compatibility we don't do this
3113            // default handling if explicit ime options have not been given,
3114            // instead turning this into the normal enter key codes that an
3115            // app may be expecting.
3116            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
3117                View v = focusSearch(FOCUS_DOWN);
3118                if (v != null) {
3119                    if (!v.requestFocus(FOCUS_DOWN)) {
3120                        throw new IllegalStateException("focus search returned a view " +
3121                                "that wasn't able to take focus!");
3122                    }
3123                }
3124                return;
3125
3126            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
3127                InputMethodManager imm = InputMethodManager.peekInstance();
3128                if (imm != null) {
3129                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
3130                }
3131                return;
3132            }
3133        }
3134
3135        Handler h = getHandler();
3136        if (h != null) {
3137            long eventTime = SystemClock.uptimeMillis();
3138            h.sendMessage(h.obtainMessage(ViewRoot.DISPATCH_KEY_FROM_IME,
3139                    new KeyEvent(eventTime, eventTime,
3140                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0, 0, 0,
3141                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3142                    | KeyEvent.FLAG_EDITOR_ACTION)));
3143            h.sendMessage(h.obtainMessage(ViewRoot.DISPATCH_KEY_FROM_IME,
3144                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
3145                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0, 0, 0,
3146                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3147                    | KeyEvent.FLAG_EDITOR_ACTION)));
3148        }
3149    }
3150
3151    /**
3152     * Set the private content type of the text, which is the
3153     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
3154     * field that will be filled in when creating an input connection.
3155     *
3156     * @see #getPrivateImeOptions()
3157     * @see EditorInfo#privateImeOptions
3158     * @attr ref android.R.styleable#TextView_privateImeOptions
3159     */
3160    public void setPrivateImeOptions(String type) {
3161        if (mInputContentType == null) mInputContentType = new InputContentType();
3162        mInputContentType.privateImeOptions = type;
3163    }
3164
3165    /**
3166     * Get the private type of the content.
3167     *
3168     * @see #setPrivateImeOptions(String)
3169     * @see EditorInfo#privateImeOptions
3170     */
3171    public String getPrivateImeOptions() {
3172        return mInputContentType != null
3173                ? mInputContentType.privateImeOptions : null;
3174    }
3175
3176    /**
3177     * Set the extra input data of the text, which is the
3178     * {@link EditorInfo#extras TextBoxAttribute.extras}
3179     * Bundle that will be filled in when creating an input connection.  The
3180     * given integer is the resource ID of an XML resource holding an
3181     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
3182     *
3183     * @see #getInputExtras(boolean)
3184     * @see EditorInfo#extras
3185     * @attr ref android.R.styleable#TextView_editorExtras
3186     */
3187    public void setInputExtras(int xmlResId)
3188            throws XmlPullParserException, IOException {
3189        XmlResourceParser parser = getResources().getXml(xmlResId);
3190        if (mInputContentType == null) mInputContentType = new InputContentType();
3191        mInputContentType.extras = new Bundle();
3192        getResources().parseBundleExtras(parser, mInputContentType.extras);
3193    }
3194
3195    /**
3196     * Retrieve the input extras currently associated with the text view, which
3197     * can be viewed as well as modified.
3198     *
3199     * @param create If true, the extras will be created if they don't already
3200     * exist.  Otherwise, null will be returned if none have been created.
3201     * @see #setInputExtras(int)View
3202     * @see EditorInfo#extras
3203     * @attr ref android.R.styleable#TextView_editorExtras
3204     */
3205    public Bundle getInputExtras(boolean create) {
3206        if (mInputContentType == null) {
3207            if (!create) return null;
3208            mInputContentType = new InputContentType();
3209        }
3210        if (mInputContentType.extras == null) {
3211            if (!create) return null;
3212            mInputContentType.extras = new Bundle();
3213        }
3214        return mInputContentType.extras;
3215    }
3216
3217    /**
3218     * Returns the error message that was set to be displayed with
3219     * {@link #setError}, or <code>null</code> if no error was set
3220     * or if it the error was cleared by the widget after user input.
3221     */
3222    public CharSequence getError() {
3223        return mError;
3224    }
3225
3226    /**
3227     * Sets the right-hand compound drawable of the TextView to the "error"
3228     * icon and sets an error message that will be displayed in a popup when
3229     * the TextView has focus.  The icon and error message will be reset to
3230     * null when any key events cause changes to the TextView's text.  If the
3231     * <code>error</code> is <code>null</code>, the error message and icon
3232     * will be cleared.
3233     */
3234    @android.view.RemotableViewMethod
3235    public void setError(CharSequence error) {
3236        if (error == null) {
3237            setError(null, null);
3238        } else {
3239            Drawable dr = getContext().getResources().
3240                getDrawable(com.android.internal.R.drawable.
3241                            indicator_input_error);
3242
3243            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
3244            setError(error, dr);
3245        }
3246    }
3247
3248    /**
3249     * Sets the right-hand compound drawable of the TextView to the specified
3250     * icon and sets an error message that will be displayed in a popup when
3251     * the TextView has focus.  The icon and error message will be reset to
3252     * null when any key events cause changes to the TextView's text.  The
3253     * drawable must already have had {@link Drawable#setBounds} set on it.
3254     * If the <code>error</code> is <code>null</code>, the error message will
3255     * be cleared (and you should provide a <code>null</code> icon as well).
3256     */
3257    public void setError(CharSequence error, Drawable icon) {
3258        error = TextUtils.stringOrSpannedString(error);
3259
3260        mError = error;
3261        mErrorWasChanged = true;
3262        final Drawables dr = mDrawables;
3263        if (dr != null) {
3264            setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop,
3265                                 icon, dr.mDrawableBottom);
3266        } else {
3267            setCompoundDrawables(null, null, icon, null);
3268        }
3269
3270        if (error == null) {
3271            if (mPopup != null) {
3272                if (mPopup.isShowing()) {
3273                    mPopup.dismiss();
3274                }
3275
3276                mPopup = null;
3277            }
3278        } else {
3279            if (isFocused()) {
3280                showError();
3281            }
3282        }
3283    }
3284
3285    private void showError() {
3286        if (getWindowToken() == null) {
3287            mShowErrorAfterAttach = true;
3288            return;
3289        }
3290
3291        if (mPopup == null) {
3292            LayoutInflater inflater = LayoutInflater.from(getContext());
3293            final TextView err = (TextView) inflater.inflate(com.android.internal.R.layout.textview_hint,
3294                    null);
3295
3296            final float scale = getResources().getDisplayMetrics().density;
3297            mPopup = new ErrorPopup(err, (int) (200 * scale + 0.5f),
3298                    (int) (50 * scale + 0.5f));
3299            mPopup.setFocusable(false);
3300            // The user is entering text, so the input method is needed.  We
3301            // don't want the popup to be displayed on top of it.
3302            mPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED);
3303        }
3304
3305        TextView tv = (TextView) mPopup.getContentView();
3306        chooseSize(mPopup, mError, tv);
3307        tv.setText(mError);
3308
3309        mPopup.showAsDropDown(this, getErrorX(), getErrorY());
3310        mPopup.fixDirection(mPopup.isAboveAnchor());
3311    }
3312
3313    private static class ErrorPopup extends PopupWindow {
3314        private boolean mAbove = false;
3315        private TextView mView;
3316
3317        ErrorPopup(TextView v, int width, int height) {
3318            super(v, width, height);
3319            mView = v;
3320        }
3321
3322        void fixDirection(boolean above) {
3323            mAbove = above;
3324
3325            if (above) {
3326                mView.setBackgroundResource(com.android.internal.R.drawable.popup_inline_error_above);
3327            } else {
3328                mView.setBackgroundResource(com.android.internal.R.drawable.popup_inline_error);
3329            }
3330        }
3331
3332        @Override
3333        public void update(int x, int y, int w, int h, boolean force) {
3334            super.update(x, y, w, h, force);
3335
3336            boolean above = isAboveAnchor();
3337            if (above != mAbove) {
3338                fixDirection(above);
3339            }
3340        }
3341    }
3342
3343    /**
3344     * Returns the Y offset to make the pointy top of the error point
3345     * at the middle of the error icon.
3346     */
3347    private int getErrorX() {
3348        /*
3349         * The "25" is the distance between the point and the right edge
3350         * of the background
3351         */
3352        final float scale = getResources().getDisplayMetrics().density;
3353
3354        final Drawables dr = mDrawables;
3355        return getWidth() - mPopup.getWidth()
3356                - getPaddingRight()
3357                - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f);
3358    }
3359
3360    /**
3361     * Returns the Y offset to make the pointy top of the error point
3362     * at the bottom of the error icon.
3363     */
3364    private int getErrorY() {
3365        /*
3366         * Compound, not extended, because the icon is not clipped
3367         * if the text height is smaller.
3368         */
3369        int vspace = mBottom - mTop -
3370                     getCompoundPaddingBottom() - getCompoundPaddingTop();
3371
3372        final Drawables dr = mDrawables;
3373        int icontop = getCompoundPaddingTop()
3374                + (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2;
3375
3376        /*
3377         * The "2" is the distance between the point and the top edge
3378         * of the background.
3379         */
3380
3381        return icontop + (dr != null ? dr.mDrawableHeightRight : 0)
3382                - getHeight() - 2;
3383    }
3384
3385    private void hideError() {
3386        if (mPopup != null) {
3387            if (mPopup.isShowing()) {
3388                mPopup.dismiss();
3389            }
3390        }
3391
3392        mShowErrorAfterAttach = false;
3393    }
3394
3395    private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) {
3396        int wid = tv.getPaddingLeft() + tv.getPaddingRight();
3397        int ht = tv.getPaddingTop() + tv.getPaddingBottom();
3398
3399        /*
3400         * Figure out how big the text would be if we laid it out to the
3401         * full width of this view minus the border.
3402         */
3403        int cap = getWidth() - wid;
3404        if (cap < 0) {
3405            cap = 200; // We must not be measured yet -- setFrame() will fix it.
3406        }
3407
3408        Layout l = new StaticLayout(text, tv.getPaint(), cap,
3409                                    Layout.Alignment.ALIGN_NORMAL, 1, 0, true);
3410        float max = 0;
3411        for (int i = 0; i < l.getLineCount(); i++) {
3412            max = Math.max(max, l.getLineWidth(i));
3413        }
3414
3415        /*
3416         * Now set the popup size to be big enough for the text plus the border.
3417         */
3418        pop.setWidth(wid + (int) Math.ceil(max));
3419        pop.setHeight(ht + l.getHeight());
3420    }
3421
3422
3423    @Override
3424    protected boolean setFrame(int l, int t, int r, int b) {
3425        boolean result = super.setFrame(l, t, r, b);
3426
3427        if (mPopup != null) {
3428            TextView tv = (TextView) mPopup.getContentView();
3429            chooseSize(mPopup, mError, tv);
3430            mPopup.update(this, getErrorX(), getErrorY(),
3431                          mPopup.getWidth(), mPopup.getHeight());
3432        }
3433
3434        restartMarqueeIfNeeded();
3435
3436        return result;
3437    }
3438
3439    private void restartMarqueeIfNeeded() {
3440        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3441            mRestartMarquee = false;
3442            startMarquee();
3443        }
3444    }
3445
3446    /**
3447     * Sets the list of input filters that will be used if the buffer is
3448     * Editable.  Has no effect otherwise.
3449     *
3450     * @attr ref android.R.styleable#TextView_maxLength
3451     */
3452    public void setFilters(InputFilter[] filters) {
3453        if (filters == null) {
3454            throw new IllegalArgumentException();
3455        }
3456
3457        mFilters = filters;
3458
3459        if (mText instanceof Editable) {
3460            setFilters((Editable) mText, filters);
3461        }
3462    }
3463
3464    /**
3465     * Sets the list of input filters on the specified Editable,
3466     * and includes mInput in the list if it is an InputFilter.
3467     */
3468    private void setFilters(Editable e, InputFilter[] filters) {
3469        if (mInput instanceof InputFilter) {
3470            InputFilter[] nf = new InputFilter[filters.length + 1];
3471
3472            System.arraycopy(filters, 0, nf, 0, filters.length);
3473            nf[filters.length] = (InputFilter) mInput;
3474
3475            e.setFilters(nf);
3476        } else {
3477            e.setFilters(filters);
3478        }
3479    }
3480
3481    /**
3482     * Returns the current list of input filters.
3483     */
3484    public InputFilter[] getFilters() {
3485        return mFilters;
3486    }
3487
3488    /////////////////////////////////////////////////////////////////////////
3489
3490    private int getVerticalOffset(boolean forceNormal) {
3491        int voffset = 0;
3492        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3493
3494        Layout l = mLayout;
3495        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3496            l = mHintLayout;
3497        }
3498
3499        if (gravity != Gravity.TOP) {
3500            int boxht;
3501
3502            if (l == mHintLayout) {
3503                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3504                        getCompoundPaddingBottom();
3505            } else {
3506                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3507                        getExtendedPaddingBottom();
3508            }
3509            int textht = l.getHeight();
3510
3511            if (textht < boxht) {
3512                if (gravity == Gravity.BOTTOM)
3513                    voffset = boxht - textht;
3514                else // (gravity == Gravity.CENTER_VERTICAL)
3515                    voffset = (boxht - textht) >> 1;
3516            }
3517        }
3518        return voffset;
3519    }
3520
3521    private int getBottomVerticalOffset(boolean forceNormal) {
3522        int voffset = 0;
3523        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3524
3525        Layout l = mLayout;
3526        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3527            l = mHintLayout;
3528        }
3529
3530        if (gravity != Gravity.BOTTOM) {
3531            int boxht;
3532
3533            if (l == mHintLayout) {
3534                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3535                        getCompoundPaddingBottom();
3536            } else {
3537                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3538                        getExtendedPaddingBottom();
3539            }
3540            int textht = l.getHeight();
3541
3542            if (textht < boxht) {
3543                if (gravity == Gravity.TOP)
3544                    voffset = boxht - textht;
3545                else // (gravity == Gravity.CENTER_VERTICAL)
3546                    voffset = (boxht - textht) >> 1;
3547            }
3548        }
3549        return voffset;
3550    }
3551
3552    private void invalidateCursorPath() {
3553        if (mHighlightPathBogus) {
3554            invalidateCursor();
3555        } else {
3556            synchronized (sTempRect) {
3557                /*
3558                 * The reason for this concern about the thickness of the
3559                 * cursor and doing the floor/ceil on the coordinates is that
3560                 * some EditTexts (notably textfields in the Browser) have
3561                 * anti-aliased text where not all the characters are
3562                 * necessarily at integer-multiple locations.  This should
3563                 * make sure the entire cursor gets invalidated instead of
3564                 * sometimes missing half a pixel.
3565                 */
3566
3567                float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
3568                if (thick < 1.0f) {
3569                    thick = 1.0f;
3570                }
3571
3572                thick /= 2;
3573
3574                mHighlightPath.computeBounds(sTempRect, false);
3575
3576                int left = getCompoundPaddingLeft();
3577                int top = getExtendedPaddingTop() + getVerticalOffset(true);
3578
3579                invalidate((int) FloatMath.floor(left + sTempRect.left - thick),
3580                           (int) FloatMath.floor(top + sTempRect.top - thick),
3581                           (int) FloatMath.ceil(left + sTempRect.right + thick),
3582                           (int) FloatMath.ceil(top + sTempRect.bottom + thick));
3583            }
3584        }
3585    }
3586
3587    private void invalidateCursor() {
3588        int where = Selection.getSelectionEnd(mText);
3589
3590        invalidateCursor(where, where, where);
3591    }
3592
3593    private void invalidateCursor(int a, int b, int c) {
3594        if (mLayout == null) {
3595            invalidate();
3596        } else {
3597            if (a >= 0 || b >= 0 || c >= 0) {
3598                int first = Math.min(Math.min(a, b), c);
3599                int last = Math.max(Math.max(a, b), c);
3600
3601                int line = mLayout.getLineForOffset(first);
3602                int top = mLayout.getLineTop(line);
3603
3604                // This is ridiculous, but the descent from the line above
3605                // can hang down into the line we really want to redraw,
3606                // so we have to invalidate part of the line above to make
3607                // sure everything that needs to be redrawn really is.
3608                // (But not the whole line above, because that would cause
3609                // the same problem with the descenders on the line above it!)
3610                if (line > 0) {
3611                    top -= mLayout.getLineDescent(line - 1);
3612                }
3613
3614                int line2;
3615
3616                if (first == last)
3617                    line2 = line;
3618                else
3619                    line2 = mLayout.getLineForOffset(last);
3620
3621                int bottom = mLayout.getLineTop(line2 + 1);
3622                int voffset = getVerticalOffset(true);
3623
3624                int left = getCompoundPaddingLeft() + mScrollX;
3625                invalidate(left, top + voffset + getExtendedPaddingTop(),
3626                           left + getWidth() - getCompoundPaddingLeft() -
3627                           getCompoundPaddingRight(),
3628                           bottom + voffset + getExtendedPaddingTop());
3629            }
3630        }
3631    }
3632
3633    private void registerForPreDraw() {
3634        final ViewTreeObserver observer = getViewTreeObserver();
3635        if (observer == null) {
3636            return;
3637        }
3638
3639        if (mPreDrawState == PREDRAW_NOT_REGISTERED) {
3640            observer.addOnPreDrawListener(this);
3641            mPreDrawState = PREDRAW_PENDING;
3642        } else if (mPreDrawState == PREDRAW_DONE) {
3643            mPreDrawState = PREDRAW_PENDING;
3644        }
3645
3646        // else state is PREDRAW_PENDING, so keep waiting.
3647    }
3648
3649    /**
3650     * {@inheritDoc}
3651     */
3652    public boolean onPreDraw() {
3653        if (mPreDrawState != PREDRAW_PENDING) {
3654            return true;
3655        }
3656
3657        if (mLayout == null) {
3658            assumeLayout();
3659        }
3660
3661        boolean changed = false;
3662
3663        if (mMovement != null) {
3664            int curs = Selection.getSelectionEnd(mText);
3665
3666            /*
3667             * TODO: This should really only keep the end in view if
3668             * it already was before the text changed.  I'm not sure
3669             * of a good way to tell from here if it was.
3670             */
3671            if (curs < 0 &&
3672                  (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
3673                curs = mText.length();
3674            }
3675
3676            if (curs >= 0) {
3677                changed = bringPointIntoView(curs);
3678            }
3679        } else {
3680            changed = bringTextIntoView();
3681        }
3682
3683        mPreDrawState = PREDRAW_DONE;
3684        return !changed;
3685    }
3686
3687    @Override
3688    protected void onAttachedToWindow() {
3689        super.onAttachedToWindow();
3690
3691        mTemporaryDetach = false;
3692
3693        if (mShowErrorAfterAttach) {
3694            showError();
3695            mShowErrorAfterAttach = false;
3696        }
3697    }
3698
3699    @Override
3700    protected void onDetachedFromWindow() {
3701        super.onDetachedFromWindow();
3702
3703        if (mPreDrawState != PREDRAW_NOT_REGISTERED) {
3704            final ViewTreeObserver observer = getViewTreeObserver();
3705            if (observer != null) {
3706                observer.removeOnPreDrawListener(this);
3707                mPreDrawState = PREDRAW_NOT_REGISTERED;
3708            }
3709        }
3710
3711        if (mError != null) {
3712            hideError();
3713        }
3714    }
3715
3716    @Override
3717    protected boolean isPaddingOffsetRequired() {
3718        return mShadowRadius != 0 || mDrawables != null;
3719    }
3720
3721    @Override
3722    protected int getLeftPaddingOffset() {
3723        return getCompoundPaddingLeft() - mPaddingLeft +
3724                (int) Math.min(0, mShadowDx - mShadowRadius);
3725    }
3726
3727    @Override
3728    protected int getTopPaddingOffset() {
3729        return (int) Math.min(0, mShadowDy - mShadowRadius);
3730    }
3731
3732    @Override
3733    protected int getBottomPaddingOffset() {
3734        return (int) Math.max(0, mShadowDy + mShadowRadius);
3735    }
3736
3737    @Override
3738    protected int getRightPaddingOffset() {
3739        return -(getCompoundPaddingRight() - mPaddingRight) +
3740                (int) Math.max(0, mShadowDx + mShadowRadius);
3741    }
3742
3743    @Override
3744    protected boolean verifyDrawable(Drawable who) {
3745        final boolean verified = super.verifyDrawable(who);
3746        if (!verified && mDrawables != null) {
3747            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
3748                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom;
3749        }
3750        return verified;
3751    }
3752
3753    @Override
3754    public void invalidateDrawable(Drawable drawable) {
3755        if (verifyDrawable(drawable)) {
3756            final Rect dirty = drawable.getBounds();
3757            int scrollX = mScrollX;
3758            int scrollY = mScrollY;
3759
3760            // IMPORTANT: The coordinates below are based on the coordinates computed
3761            // for each compound drawable in onDraw(). Make sure to update each section
3762            // accordingly.
3763            final TextView.Drawables drawables = mDrawables;
3764            if (drawables != null) {
3765                if (drawable == drawables.mDrawableLeft) {
3766                    final int compoundPaddingTop = getCompoundPaddingTop();
3767                    final int compoundPaddingBottom = getCompoundPaddingBottom();
3768                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
3769
3770                    scrollX += mPaddingLeft;
3771                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
3772                } else if (drawable == drawables.mDrawableRight) {
3773                    final int compoundPaddingTop = getCompoundPaddingTop();
3774                    final int compoundPaddingBottom = getCompoundPaddingBottom();
3775                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
3776
3777                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
3778                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
3779                } else if (drawable == drawables.mDrawableTop) {
3780                    final int compoundPaddingLeft = getCompoundPaddingLeft();
3781                    final int compoundPaddingRight = getCompoundPaddingRight();
3782                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
3783
3784                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
3785                    scrollY += mPaddingTop;
3786                } else if (drawable == drawables.mDrawableBottom) {
3787                    final int compoundPaddingLeft = getCompoundPaddingLeft();
3788                    final int compoundPaddingRight = getCompoundPaddingRight();
3789                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
3790
3791                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
3792                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
3793                }
3794            }
3795
3796            invalidate(dirty.left + scrollX, dirty.top + scrollY,
3797                    dirty.right + scrollX, dirty.bottom + scrollY);
3798        }
3799    }
3800
3801    @Override
3802    protected void onDraw(Canvas canvas) {
3803        restartMarqueeIfNeeded();
3804
3805        // Draw the background for this view
3806        super.onDraw(canvas);
3807
3808        final int compoundPaddingLeft = getCompoundPaddingLeft();
3809        final int compoundPaddingTop = getCompoundPaddingTop();
3810        final int compoundPaddingRight = getCompoundPaddingRight();
3811        final int compoundPaddingBottom = getCompoundPaddingBottom();
3812        final int scrollX = mScrollX;
3813        final int scrollY = mScrollY;
3814        final int right = mRight;
3815        final int left = mLeft;
3816        final int bottom = mBottom;
3817        final int top = mTop;
3818
3819        final Drawables dr = mDrawables;
3820        if (dr != null) {
3821            /*
3822             * Compound, not extended, because the icon is not clipped
3823             * if the text height is smaller.
3824             */
3825
3826            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
3827            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
3828
3829            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3830            // Make sure to update invalidateDrawable() when changing this code.
3831            if (dr.mDrawableLeft != null) {
3832                canvas.save();
3833                canvas.translate(scrollX + mPaddingLeft,
3834                                 scrollY + compoundPaddingTop +
3835                                 (vspace - dr.mDrawableHeightLeft) / 2);
3836                dr.mDrawableLeft.draw(canvas);
3837                canvas.restore();
3838            }
3839
3840            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3841            // Make sure to update invalidateDrawable() when changing this code.
3842            if (dr.mDrawableRight != null) {
3843                canvas.save();
3844                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
3845                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
3846                dr.mDrawableRight.draw(canvas);
3847                canvas.restore();
3848            }
3849
3850            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3851            // Make sure to update invalidateDrawable() when changing this code.
3852            if (dr.mDrawableTop != null) {
3853                canvas.save();
3854                canvas.translate(scrollX + compoundPaddingLeft + (hspace - dr.mDrawableWidthTop) / 2,
3855                        scrollY + mPaddingTop);
3856                dr.mDrawableTop.draw(canvas);
3857                canvas.restore();
3858            }
3859
3860            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3861            // Make sure to update invalidateDrawable() when changing this code.
3862            if (dr.mDrawableBottom != null) {
3863                canvas.save();
3864                canvas.translate(scrollX + compoundPaddingLeft +
3865                        (hspace - dr.mDrawableWidthBottom) / 2,
3866                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
3867                dr.mDrawableBottom.draw(canvas);
3868                canvas.restore();
3869            }
3870        }
3871
3872        if (mPreDrawState == PREDRAW_DONE) {
3873            final ViewTreeObserver observer = getViewTreeObserver();
3874            if (observer != null) {
3875                observer.removeOnPreDrawListener(this);
3876                mPreDrawState = PREDRAW_NOT_REGISTERED;
3877            }
3878        }
3879
3880        int color = mCurTextColor;
3881
3882        if (mLayout == null) {
3883            assumeLayout();
3884        }
3885
3886        Layout layout = mLayout;
3887        int cursorcolor = color;
3888
3889        if (mHint != null && mText.length() == 0) {
3890            if (mHintTextColor != null) {
3891                color = mCurHintTextColor;
3892            }
3893
3894            layout = mHintLayout;
3895        }
3896
3897        mTextPaint.setColor(color);
3898        mTextPaint.drawableState = getDrawableState();
3899
3900        canvas.save();
3901        /*  Would be faster if we didn't have to do this. Can we chop the
3902            (displayable) text so that we don't need to do this ever?
3903        */
3904
3905        int extendedPaddingTop = getExtendedPaddingTop();
3906        int extendedPaddingBottom = getExtendedPaddingBottom();
3907
3908        float clipLeft = compoundPaddingLeft + scrollX;
3909        float clipTop = extendedPaddingTop + scrollY;
3910        float clipRight = right - left - compoundPaddingRight + scrollX;
3911        float clipBottom = bottom - top - extendedPaddingBottom + scrollY;
3912
3913        if (mShadowRadius != 0) {
3914            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
3915            clipRight += Math.max(0, mShadowDx + mShadowRadius);
3916
3917            clipTop += Math.min(0, mShadowDy - mShadowRadius);
3918            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
3919        }
3920
3921        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
3922
3923        int voffsetText = 0;
3924        int voffsetCursor = 0;
3925
3926        // translate in by our padding
3927        {
3928            /* shortcircuit calling getVerticaOffset() */
3929            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
3930                voffsetText = getVerticalOffset(false);
3931                voffsetCursor = getVerticalOffset(true);
3932            }
3933            canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
3934        }
3935
3936        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3937            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
3938                    (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
3939                canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft -
3940                        getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f);
3941            }
3942
3943            if (mMarquee != null && mMarquee.isRunning()) {
3944                canvas.translate(-mMarquee.mScroll, 0.0f);
3945            }
3946        }
3947
3948        Path highlight = null;
3949        int selStart = -1, selEnd = -1;
3950
3951        //  If there is no movement method, then there can be no selection.
3952        //  Check that first and attempt to skip everything having to do with
3953        //  the cursor.
3954        //  XXX This is not strictly true -- a program could set the
3955        //  selection manually if it really wanted to.
3956        if (mMovement != null && (isFocused() || isPressed())) {
3957            selStart = Selection.getSelectionStart(mText);
3958            selEnd = Selection.getSelectionEnd(mText);
3959
3960            if (mCursorVisible && selStart >= 0 && isEnabled()) {
3961                if (mHighlightPath == null)
3962                    mHighlightPath = new Path();
3963
3964                if (selStart == selEnd) {
3965                    if ((SystemClock.uptimeMillis() - mShowCursor) % (2 * BLINK) < BLINK) {
3966                        if (mHighlightPathBogus) {
3967                            mHighlightPath.reset();
3968                            mLayout.getCursorPath(selStart, mHighlightPath, mText);
3969                            mHighlightPathBogus = false;
3970                        }
3971
3972                        // XXX should pass to skin instead of drawing directly
3973                        mHighlightPaint.setColor(cursorcolor);
3974                        mHighlightPaint.setStyle(Paint.Style.STROKE);
3975
3976                        highlight = mHighlightPath;
3977                    }
3978                } else {
3979                    if (mHighlightPathBogus) {
3980                        mHighlightPath.reset();
3981                        mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
3982                        mHighlightPathBogus = false;
3983                    }
3984
3985                    // XXX should pass to skin instead of drawing directly
3986                    mHighlightPaint.setColor(mHighlightColor);
3987                    mHighlightPaint.setStyle(Paint.Style.FILL);
3988
3989                    highlight = mHighlightPath;
3990                }
3991            }
3992        }
3993
3994        /*  Comment out until we decide what to do about animations
3995        boolean isLinearTextOn = false;
3996        if (currentTransformation != null) {
3997            isLinearTextOn = mTextPaint.isLinearTextOn();
3998            Matrix m = currentTransformation.getMatrix();
3999            if (!m.isIdentity()) {
4000                // mTextPaint.setLinearTextOn(true);
4001            }
4002        }
4003        */
4004
4005        final InputMethodState ims = mInputMethodState;
4006        if (ims != null && ims.mBatchEditNesting == 0) {
4007            InputMethodManager imm = InputMethodManager.peekInstance();
4008            if (imm != null) {
4009                if (imm.isActive(this)) {
4010                    boolean reported = false;
4011                    if (ims.mContentChanged || ims.mSelectionModeChanged) {
4012                        // We are in extract mode and the content has changed
4013                        // in some way... just report complete new text to the
4014                        // input method.
4015                        reported = reportExtractedText();
4016                    }
4017                    if (!reported && highlight != null) {
4018                        int candStart = -1;
4019                        int candEnd = -1;
4020                        if (mText instanceof Spannable) {
4021                            Spannable sp = (Spannable)mText;
4022                            candStart = EditableInputConnection.getComposingSpanStart(sp);
4023                            candEnd = EditableInputConnection.getComposingSpanEnd(sp);
4024                        }
4025                        imm.updateSelection(this, selStart, selEnd, candStart, candEnd);
4026                    }
4027                }
4028
4029                if (imm.isWatchingCursor(this) && highlight != null) {
4030                    highlight.computeBounds(ims.mTmpRectF, true);
4031                    ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0;
4032
4033                    canvas.getMatrix().mapPoints(ims.mTmpOffset);
4034                    ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]);
4035
4036                    ims.mTmpRectF.offset(0, voffsetCursor - voffsetText);
4037
4038                    ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5),
4039                            (int)(ims.mTmpRectF.top + 0.5),
4040                            (int)(ims.mTmpRectF.right + 0.5),
4041                            (int)(ims.mTmpRectF.bottom + 0.5));
4042
4043                    imm.updateCursor(this,
4044                            ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top,
4045                            ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom);
4046                }
4047            }
4048        }
4049
4050        layout.draw(canvas, highlight, mHighlightPaint, voffsetCursor - voffsetText);
4051
4052        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
4053            canvas.translate((int) mMarquee.getGhostOffset(), 0.0f);
4054            layout.draw(canvas, highlight, mHighlightPaint, voffsetCursor - voffsetText);
4055        }
4056
4057        /*  Comment out until we decide what to do about animations
4058        if (currentTransformation != null) {
4059            mTextPaint.setLinearTextOn(isLinearTextOn);
4060        }
4061        */
4062
4063        canvas.restore();
4064    }
4065
4066    @Override
4067    public void getFocusedRect(Rect r) {
4068        if (mLayout == null) {
4069            super.getFocusedRect(r);
4070            return;
4071        }
4072
4073        int sel = getSelectionEnd();
4074        if (sel < 0) {
4075            super.getFocusedRect(r);
4076            return;
4077        }
4078
4079        int line = mLayout.getLineForOffset(sel);
4080        r.top = mLayout.getLineTop(line);
4081        r.bottom = mLayout.getLineBottom(line);
4082
4083        r.left = (int) mLayout.getPrimaryHorizontal(sel);
4084        r.right = r.left + 1;
4085
4086        // Adjust for padding and gravity.
4087        int paddingLeft = getCompoundPaddingLeft();
4088        int paddingTop = getExtendedPaddingTop();
4089        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4090            paddingTop += getVerticalOffset(false);
4091        }
4092        r.offset(paddingLeft, paddingTop);
4093    }
4094
4095    /**
4096     * Return the number of lines of text, or 0 if the internal Layout has not
4097     * been built.
4098     */
4099    public int getLineCount() {
4100        return mLayout != null ? mLayout.getLineCount() : 0;
4101    }
4102
4103    /**
4104     * Return the baseline for the specified line (0...getLineCount() - 1)
4105     * If bounds is not null, return the top, left, right, bottom extents
4106     * of the specified line in it. If the internal Layout has not been built,
4107     * return 0 and set bounds to (0, 0, 0, 0)
4108     * @param line which line to examine (0..getLineCount() - 1)
4109     * @param bounds Optional. If not null, it returns the extent of the line
4110     * @return the Y-coordinate of the baseline
4111     */
4112    public int getLineBounds(int line, Rect bounds) {
4113        if (mLayout == null) {
4114            if (bounds != null) {
4115                bounds.set(0, 0, 0, 0);
4116            }
4117            return 0;
4118        }
4119        else {
4120            int baseline = mLayout.getLineBounds(line, bounds);
4121
4122            int voffset = getExtendedPaddingTop();
4123            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4124                voffset += getVerticalOffset(true);
4125            }
4126            if (bounds != null) {
4127                bounds.offset(getCompoundPaddingLeft(), voffset);
4128            }
4129            return baseline + voffset;
4130        }
4131    }
4132
4133    @Override
4134    public int getBaseline() {
4135        if (mLayout == null) {
4136            return super.getBaseline();
4137        }
4138
4139        int voffset = 0;
4140        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4141            voffset = getVerticalOffset(true);
4142        }
4143
4144        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
4145    }
4146
4147    @Override
4148    public boolean onKeyDown(int keyCode, KeyEvent event) {
4149        int which = doKeyDown(keyCode, event, null);
4150        if (which == 0) {
4151            // Go through default dispatching.
4152            return super.onKeyDown(keyCode, event);
4153        }
4154
4155        return true;
4156    }
4157
4158    @Override
4159    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
4160        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
4161
4162        int which = doKeyDown(keyCode, down, event);
4163        if (which == 0) {
4164            // Go through default dispatching.
4165            return super.onKeyMultiple(keyCode, repeatCount, event);
4166        }
4167        if (which == -1) {
4168            // Consumed the whole thing.
4169            return true;
4170        }
4171
4172        repeatCount--;
4173
4174        // We are going to dispatch the remaining events to either the input
4175        // or movement method.  To do this, we will just send a repeated stream
4176        // of down and up events until we have done the complete repeatCount.
4177        // It would be nice if those interfaces had an onKeyMultiple() method,
4178        // but adding that is a more complicated change.
4179        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
4180        if (which == 1) {
4181            mInput.onKeyUp(this, (Editable)mText, keyCode, up);
4182            while (--repeatCount > 0) {
4183                mInput.onKeyDown(this, (Editable)mText, keyCode, down);
4184                mInput.onKeyUp(this, (Editable)mText, keyCode, up);
4185            }
4186            if (mError != null && !mErrorWasChanged) {
4187                setError(null, null);
4188            }
4189
4190        } else if (which == 2) {
4191            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4192            while (--repeatCount > 0) {
4193                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
4194                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4195            }
4196        }
4197
4198        return true;
4199    }
4200
4201    /**
4202     * Returns true if pressing ENTER in this field advances focus instead
4203     * of inserting the character.  This is true mostly in single-line fields,
4204     * but also in mail addresses and subjects which will display on multiple
4205     * lines but where it doesn't make sense to insert newlines.
4206     */
4207    private boolean shouldAdvanceFocusOnEnter() {
4208        if (mInput == null) {
4209            return false;
4210        }
4211
4212        if (mSingleLine) {
4213            return true;
4214        }
4215
4216        if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
4217            int variation = mInputType & EditorInfo.TYPE_MASK_VARIATION;
4218
4219            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS ||
4220                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
4221                return true;
4222            }
4223        }
4224
4225        return false;
4226    }
4227
4228    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
4229        if (!isEnabled()) {
4230            return 0;
4231        }
4232
4233        switch (keyCode) {
4234            case KeyEvent.KEYCODE_ENTER:
4235                // If ALT modifier is held, then we always insert a
4236                // newline character.
4237                if ((event.getMetaState()&KeyEvent.META_ALT_ON) == 0) {
4238
4239                    // When mInputContentType is set, we know that we are
4240                    // running in a "modern" cupcake environment, so don't need
4241                    // to worry about the application trying to capture
4242                    // enter key events.
4243                    if (mInputContentType != null) {
4244
4245                        // If there is an action listener, given them a
4246                        // chance to consume the event.
4247                        if (mInputContentType.onEditorActionListener != null &&
4248                                mInputContentType.onEditorActionListener.onEditorAction(
4249                                this, EditorInfo.IME_NULL, event)) {
4250                            mInputContentType.enterDown = true;
4251                            // We are consuming the enter key for them.
4252                            return -1;
4253                        }
4254                    }
4255
4256                    // If our editor should move focus when enter is pressed, or
4257                    // this is a generated event from an IME action button, then
4258                    // don't let it be inserted into the text.
4259                    if ((event.getFlags()&KeyEvent.FLAG_EDITOR_ACTION) != 0
4260                            || shouldAdvanceFocusOnEnter()) {
4261                        return -1;
4262                    }
4263                }
4264                break;
4265
4266            case KeyEvent.KEYCODE_DPAD_CENTER:
4267                if (shouldAdvanceFocusOnEnter()) {
4268                    return 0;
4269                }
4270        }
4271
4272        if (mInput != null) {
4273            /*
4274             * Keep track of what the error was before doing the input
4275             * so that if an input filter changed the error, we leave
4276             * that error showing.  Otherwise, we take down whatever
4277             * error was showing when the user types something.
4278             */
4279            mErrorWasChanged = false;
4280
4281            boolean doDown = true;
4282            if (otherEvent != null) {
4283                try {
4284                    beginBatchEdit();
4285                    boolean handled = mInput.onKeyOther(this, (Editable) mText,
4286                            otherEvent);
4287                    if (mError != null && !mErrorWasChanged) {
4288                        setError(null, null);
4289                    }
4290                    doDown = false;
4291                    if (handled) {
4292                        return -1;
4293                    }
4294                } catch (AbstractMethodError e) {
4295                    // onKeyOther was added after 1.0, so if it isn't
4296                    // implemented we need to try to dispatch as a regular down.
4297                } finally {
4298                    endBatchEdit();
4299                }
4300            }
4301
4302            if (doDown) {
4303                beginBatchEdit();
4304                if (mInput.onKeyDown(this, (Editable) mText, keyCode, event)) {
4305                    endBatchEdit();
4306                    if (mError != null && !mErrorWasChanged) {
4307                        setError(null, null);
4308                    }
4309                    return 1;
4310                }
4311                endBatchEdit();
4312            }
4313        }
4314
4315        // bug 650865: sometimes we get a key event before a layout.
4316        // don't try to move around if we don't know the layout.
4317
4318        if (mMovement != null && mLayout != null) {
4319            boolean doDown = true;
4320            if (otherEvent != null) {
4321                try {
4322                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
4323                            otherEvent);
4324                    doDown = false;
4325                    if (handled) {
4326                        return -1;
4327                    }
4328                } catch (AbstractMethodError e) {
4329                    // onKeyOther was added after 1.0, so if it isn't
4330                    // implemented we need to try to dispatch as a regular down.
4331                }
4332            }
4333            if (doDown) {
4334                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
4335                    return 2;
4336            }
4337        }
4338
4339        return 0;
4340    }
4341
4342    @Override
4343    public boolean onKeyUp(int keyCode, KeyEvent event) {
4344        if (!isEnabled()) {
4345            return super.onKeyUp(keyCode, event);
4346        }
4347
4348        switch (keyCode) {
4349            case KeyEvent.KEYCODE_DPAD_CENTER:
4350                /*
4351                 * If there is a click listener, just call through to
4352                 * super, which will invoke it.
4353                 *
4354                 * If there isn't a click listener, try to show the soft
4355                 * input method.  (It will also
4356                 * call performClick(), but that won't do anything in
4357                 * this case.)
4358                 */
4359                if (mOnClickListener == null) {
4360                    if (mMovement != null && mText instanceof Editable
4361                            && mLayout != null && onCheckIsTextEditor()) {
4362                        InputMethodManager imm = (InputMethodManager)
4363                                getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
4364                        imm.showSoftInput(this, 0);
4365                    }
4366                }
4367                return super.onKeyUp(keyCode, event);
4368
4369            case KeyEvent.KEYCODE_ENTER:
4370                if (mInputContentType != null
4371                        && mInputContentType.onEditorActionListener != null
4372                        && mInputContentType.enterDown) {
4373                    mInputContentType.enterDown = false;
4374                    if (mInputContentType.onEditorActionListener.onEditorAction(
4375                            this, EditorInfo.IME_NULL, event)) {
4376                        return true;
4377                    }
4378                }
4379
4380                if ((event.getFlags()&KeyEvent.FLAG_EDITOR_ACTION) != 0
4381                        || shouldAdvanceFocusOnEnter()) {
4382                    /*
4383                     * If there is a click listener, just call through to
4384                     * super, which will invoke it.
4385                     *
4386                     * If there isn't a click listener, try to advance focus,
4387                     * but still call through to super, which will reset the
4388                     * pressed state and longpress state.  (It will also
4389                     * call performClick(), but that won't do anything in
4390                     * this case.)
4391                     */
4392                    if (mOnClickListener == null) {
4393                        View v = focusSearch(FOCUS_DOWN);
4394
4395                        if (v != null) {
4396                            if (!v.requestFocus(FOCUS_DOWN)) {
4397                                throw new IllegalStateException("focus search returned a view " +
4398                                        "that wasn't able to take focus!");
4399                            }
4400
4401                            /*
4402                             * Return true because we handled the key; super
4403                             * will return false because there was no click
4404                             * listener.
4405                             */
4406                            super.onKeyUp(keyCode, event);
4407                            return true;
4408                        } else if ((event.getFlags()
4409                                & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
4410                            // No target for next focus, but make sure the IME
4411                            // if this came from it.
4412                            InputMethodManager imm = InputMethodManager.peekInstance();
4413                            if (imm != null) {
4414                                imm.hideSoftInputFromWindow(getWindowToken(), 0);
4415                            }
4416                        }
4417                    }
4418
4419                    return super.onKeyUp(keyCode, event);
4420                }
4421        }
4422
4423        if (mInput != null)
4424            if (mInput.onKeyUp(this, (Editable) mText, keyCode, event))
4425                return true;
4426
4427        if (mMovement != null && mLayout != null)
4428            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
4429                return true;
4430
4431        return super.onKeyUp(keyCode, event);
4432    }
4433
4434    @Override public boolean onCheckIsTextEditor() {
4435        return mInputType != EditorInfo.TYPE_NULL;
4436    }
4437
4438    @Override public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
4439        if (onCheckIsTextEditor()) {
4440            if (mInputMethodState == null) {
4441                mInputMethodState = new InputMethodState();
4442            }
4443            outAttrs.inputType = mInputType;
4444            if (mInputContentType != null) {
4445                outAttrs.imeOptions = mInputContentType.imeOptions;
4446                outAttrs.privateImeOptions = mInputContentType.privateImeOptions;
4447                outAttrs.actionLabel = mInputContentType.imeActionLabel;
4448                outAttrs.actionId = mInputContentType.imeActionId;
4449                outAttrs.extras = mInputContentType.extras;
4450            } else {
4451                outAttrs.imeOptions = EditorInfo.IME_NULL;
4452            }
4453            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
4454                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
4455                if (focusSearch(FOCUS_DOWN) != null) {
4456                    // An action has not been set, but the enter key will move to
4457                    // the next focus, so set the action to that.
4458                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
4459                } else {
4460                    // An action has not been set, and there is no focus to move
4461                    // to, so let's just supply a "done" action.
4462                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
4463                }
4464                if (!shouldAdvanceFocusOnEnter()) {
4465                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
4466                }
4467            }
4468            if ((outAttrs.inputType & (InputType.TYPE_MASK_CLASS
4469                    | InputType.TYPE_TEXT_FLAG_MULTI_LINE))
4470                    == (InputType.TYPE_CLASS_TEXT
4471                            | InputType.TYPE_TEXT_FLAG_MULTI_LINE)) {
4472                // Multi-line text editors should always show an enter key.
4473                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
4474            }
4475            outAttrs.hintText = mHint;
4476            if (mText instanceof Editable) {
4477                InputConnection ic = new EditableInputConnection(this);
4478                outAttrs.initialSelStart = Selection.getSelectionStart(mText);
4479                outAttrs.initialSelEnd = Selection.getSelectionEnd(mText);
4480                outAttrs.initialCapsMode = ic.getCursorCapsMode(mInputType);
4481                return ic;
4482            }
4483        }
4484        return null;
4485    }
4486
4487    /**
4488     * If this TextView contains editable content, extract a portion of it
4489     * based on the information in <var>request</var> in to <var>outText</var>.
4490     * @return Returns true if the text was successfully extracted, else false.
4491     */
4492    public boolean extractText(ExtractedTextRequest request,
4493            ExtractedText outText) {
4494        return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN,
4495                EXTRACT_UNKNOWN, outText);
4496    }
4497
4498    static final int EXTRACT_NOTHING = -2;
4499    static final int EXTRACT_UNKNOWN = -1;
4500
4501    boolean extractTextInternal(ExtractedTextRequest request,
4502            int partialStartOffset, int partialEndOffset, int delta,
4503            ExtractedText outText) {
4504        final CharSequence content = mText;
4505        if (content != null) {
4506            if (partialStartOffset != EXTRACT_NOTHING) {
4507                final int N = content.length();
4508                if (partialStartOffset < 0) {
4509                    outText.partialStartOffset = outText.partialEndOffset = -1;
4510                    partialStartOffset = 0;
4511                    partialEndOffset = N;
4512                } else {
4513                    // Adjust offsets to ensure we contain full spans.
4514                    if (content instanceof Spanned) {
4515                        Spanned spanned = (Spanned)content;
4516                        Object[] spans = spanned.getSpans(partialStartOffset,
4517                                partialEndOffset, ParcelableSpan.class);
4518                        int i = spans.length;
4519                        while (i > 0) {
4520                            i--;
4521                            int j = spanned.getSpanStart(spans[i]);
4522                            if (j < partialStartOffset) partialStartOffset = j;
4523                            j = spanned.getSpanEnd(spans[i]);
4524                            if (j > partialEndOffset) partialEndOffset = j;
4525                        }
4526                    }
4527                    outText.partialStartOffset = partialStartOffset;
4528                    outText.partialEndOffset = partialEndOffset;
4529                    // Now use the delta to determine the actual amount of text
4530                    // we need.
4531                    partialEndOffset += delta;
4532                    if (partialStartOffset > N) {
4533                        partialStartOffset = N;
4534                    } else if (partialStartOffset < 0) {
4535                        partialStartOffset = 0;
4536                    }
4537                    if (partialEndOffset > N) {
4538                        partialEndOffset = N;
4539                    } else if (partialEndOffset < 0) {
4540                        partialEndOffset = 0;
4541                    }
4542                }
4543                if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) {
4544                    outText.text = content.subSequence(partialStartOffset,
4545                            partialEndOffset);
4546                } else {
4547                    outText.text = TextUtils.substring(content, partialStartOffset,
4548                            partialEndOffset);
4549                }
4550            }
4551            outText.flags = 0;
4552            if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) {
4553                outText.flags |= ExtractedText.FLAG_SELECTING;
4554            }
4555            if (mSingleLine) {
4556                outText.flags |= ExtractedText.FLAG_SINGLE_LINE;
4557            }
4558            outText.startOffset = 0;
4559            outText.selectionStart = Selection.getSelectionStart(content);
4560            outText.selectionEnd = Selection.getSelectionEnd(content);
4561            return true;
4562        }
4563        return false;
4564    }
4565
4566    boolean reportExtractedText() {
4567        final InputMethodState ims = mInputMethodState;
4568        if (ims != null) {
4569            final boolean contentChanged = ims.mContentChanged;
4570            if (contentChanged || ims.mSelectionModeChanged) {
4571                ims.mContentChanged = false;
4572                ims.mSelectionModeChanged = false;
4573                final ExtractedTextRequest req = mInputMethodState.mExtracting;
4574                if (req != null) {
4575                    InputMethodManager imm = InputMethodManager.peekInstance();
4576                    if (imm != null) {
4577                        if (DEBUG_EXTRACT) Log.v(TAG, "Retrieving extracted start="
4578                                + ims.mChangedStart + " end=" + ims.mChangedEnd
4579                                + " delta=" + ims.mChangedDelta);
4580                        if (ims.mChangedStart < 0 && !contentChanged) {
4581                            ims.mChangedStart = EXTRACT_NOTHING;
4582                        }
4583                        if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd,
4584                                ims.mChangedDelta, ims.mTmpExtracted)) {
4585                            if (DEBUG_EXTRACT) Log.v(TAG, "Reporting extracted start="
4586                                    + ims.mTmpExtracted.partialStartOffset
4587                                    + " end=" + ims.mTmpExtracted.partialEndOffset
4588                                    + ": " + ims.mTmpExtracted.text);
4589                            imm.updateExtractedText(this, req.token,
4590                                    mInputMethodState.mTmpExtracted);
4591                            return true;
4592                        }
4593                    }
4594                }
4595            }
4596        }
4597        return false;
4598    }
4599
4600    /**
4601     * This is used to remove all style-impacting spans from text before new
4602     * extracted text is being replaced into it, so that we don't have any
4603     * lingering spans applied during the replace.
4604     */
4605    static void removeParcelableSpans(Spannable spannable, int start, int end) {
4606        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
4607        int i = spans.length;
4608        while (i > 0) {
4609            i--;
4610            spannable.removeSpan(spans[i]);
4611        }
4612    }
4613
4614    /**
4615     * Apply to this text view the given extracted text, as previously
4616     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
4617     */
4618    public void setExtractedText(ExtractedText text) {
4619        Editable content = getEditableText();
4620        if (text.text != null) {
4621            if (content == null) {
4622                setText(text.text, TextView.BufferType.EDITABLE);
4623            } else if (text.partialStartOffset < 0) {
4624                removeParcelableSpans(content, 0, content.length());
4625                content.replace(0, content.length(), text.text);
4626            } else {
4627                final int N = content.length();
4628                int start = text.partialStartOffset;
4629                if (start > N) start = N;
4630                int end = text.partialEndOffset;
4631                if (end > N) end = N;
4632                removeParcelableSpans(content, start, end);
4633                content.replace(start, end, text.text);
4634            }
4635        }
4636
4637        // Now set the selection position...  make sure it is in range, to
4638        // avoid crashes.  If this is a partial update, it is possible that
4639        // the underlying text may have changed, causing us problems here.
4640        // Also we just don't want to trust clients to do the right thing.
4641        Spannable sp = (Spannable)getText();
4642        final int N = sp.length();
4643        int start = text.selectionStart;
4644        if (start < 0) start = 0;
4645        else if (start > N) start = N;
4646        int end = text.selectionEnd;
4647        if (end < 0) end = 0;
4648        else if (end > N) end = N;
4649        Selection.setSelection(sp, start, end);
4650
4651        // Finally, update the selection mode.
4652        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
4653            MetaKeyKeyListener.startSelecting(this, sp);
4654        } else {
4655            MetaKeyKeyListener.stopSelecting(this, sp);
4656        }
4657    }
4658
4659    /**
4660     * @hide
4661     */
4662    public void setExtracting(ExtractedTextRequest req) {
4663        if (mInputMethodState != null) {
4664            mInputMethodState.mExtracting = req;
4665        }
4666    }
4667
4668    /**
4669     * Called by the framework in response to a text completion from
4670     * the current input method, provided by it calling
4671     * {@link InputConnection#commitCompletion
4672     * InputConnection.commitCompletion()}.  The default implementation does
4673     * nothing; text views that are supporting auto-completion should override
4674     * this to do their desired behavior.
4675     *
4676     * @param text The auto complete text the user has selected.
4677     */
4678    public void onCommitCompletion(CompletionInfo text) {
4679    }
4680
4681    public void beginBatchEdit() {
4682        final InputMethodState ims = mInputMethodState;
4683        if (ims != null) {
4684            int nesting = ++ims.mBatchEditNesting;
4685            if (nesting == 1) {
4686                ims.mCursorChanged = false;
4687                ims.mChangedDelta = 0;
4688                if (ims.mContentChanged) {
4689                    // We already have a pending change from somewhere else,
4690                    // so turn this into a full update.
4691                    ims.mChangedStart = 0;
4692                    ims.mChangedEnd = mText.length();
4693                } else {
4694                    ims.mChangedStart = EXTRACT_UNKNOWN;
4695                    ims.mChangedEnd = EXTRACT_UNKNOWN;
4696                    ims.mContentChanged = false;
4697                }
4698                onBeginBatchEdit();
4699            }
4700        }
4701    }
4702
4703    public void endBatchEdit() {
4704        final InputMethodState ims = mInputMethodState;
4705        if (ims != null) {
4706            int nesting = --ims.mBatchEditNesting;
4707            if (nesting == 0) {
4708                finishBatchEdit(ims);
4709            }
4710        }
4711    }
4712
4713    void ensureEndedBatchEdit() {
4714        final InputMethodState ims = mInputMethodState;
4715        if (ims != null && ims.mBatchEditNesting != 0) {
4716            ims.mBatchEditNesting = 0;
4717            finishBatchEdit(ims);
4718        }
4719    }
4720
4721    void finishBatchEdit(final InputMethodState ims) {
4722        onEndBatchEdit();
4723
4724        if (ims.mContentChanged || ims.mSelectionModeChanged) {
4725            updateAfterEdit();
4726            reportExtractedText();
4727        } else if (ims.mCursorChanged) {
4728            // Cheezy way to get us to report the current cursor location.
4729            invalidateCursor();
4730        }
4731    }
4732
4733    void updateAfterEdit() {
4734        invalidate();
4735        int curs = Selection.getSelectionStart(mText);
4736
4737        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) ==
4738                             Gravity.BOTTOM) {
4739            registerForPreDraw();
4740        }
4741
4742        if (curs >= 0) {
4743            mHighlightPathBogus = true;
4744
4745            if (isFocused()) {
4746                mShowCursor = SystemClock.uptimeMillis();
4747                makeBlink();
4748            }
4749        }
4750
4751        checkForResize();
4752    }
4753
4754    /**
4755     * Called by the framework in response to a request to begin a batch
4756     * of edit operations through a call to link {@link #beginBatchEdit()}.
4757     */
4758    public void onBeginBatchEdit() {
4759    }
4760
4761    /**
4762     * Called by the framework in response to a request to end a batch
4763     * of edit operations through a call to link {@link #endBatchEdit}.
4764     */
4765    public void onEndBatchEdit() {
4766    }
4767
4768    /**
4769     * Called by the framework in response to a private command from the
4770     * current method, provided by it calling
4771     * {@link InputConnection#performPrivateCommand
4772     * InputConnection.performPrivateCommand()}.
4773     *
4774     * @param action The action name of the command.
4775     * @param data Any additional data for the command.  This may be null.
4776     * @return Return true if you handled the command, else false.
4777     */
4778    public boolean onPrivateIMECommand(String action, Bundle data) {
4779        return false;
4780    }
4781
4782    private void nullLayouts() {
4783        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
4784            mSavedLayout = (BoringLayout) mLayout;
4785        }
4786        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
4787            mSavedHintLayout = (BoringLayout) mHintLayout;
4788        }
4789
4790        mLayout = mHintLayout = null;
4791    }
4792
4793    /**
4794     * Make a new Layout based on the already-measured size of the view,
4795     * on the assumption that it was measured correctly at some point.
4796     */
4797    private void assumeLayout() {
4798        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
4799
4800        if (width < 1) {
4801            width = 0;
4802        }
4803
4804        int physicalWidth = width;
4805
4806        if (mHorizontallyScrolling) {
4807            width = VERY_WIDE;
4808        }
4809
4810        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
4811                      physicalWidth, false);
4812    }
4813
4814    /**
4815     * The width passed in is now the desired layout width,
4816     * not the full view width with padding.
4817     * {@hide}
4818     */
4819    protected void makeNewLayout(int w, int hintWidth,
4820                                 BoringLayout.Metrics boring,
4821                                 BoringLayout.Metrics hintBoring,
4822                                 int ellipsisWidth, boolean bringIntoView) {
4823        stopMarquee();
4824
4825        mHighlightPathBogus = true;
4826
4827        if (w < 0) {
4828            w = 0;
4829        }
4830        if (hintWidth < 0) {
4831            hintWidth = 0;
4832        }
4833
4834        Layout.Alignment alignment;
4835        switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
4836            case Gravity.CENTER_HORIZONTAL:
4837                alignment = Layout.Alignment.ALIGN_CENTER;
4838                break;
4839
4840            case Gravity.RIGHT:
4841                alignment = Layout.Alignment.ALIGN_OPPOSITE;
4842                break;
4843
4844            default:
4845                alignment = Layout.Alignment.ALIGN_NORMAL;
4846        }
4847
4848        boolean shouldEllipsize = mEllipsize != null && mInput == null;
4849
4850        if (mText instanceof Spannable) {
4851            mLayout = new DynamicLayout(mText, mTransformed, mTextPaint, w,
4852                    alignment, mSpacingMult,
4853                    mSpacingAdd, mIncludePad, mInput == null ? mEllipsize : null,
4854                    ellipsisWidth);
4855        } else {
4856            if (boring == UNKNOWN_BORING) {
4857                boring = BoringLayout.isBoring(mTransformed, mTextPaint,
4858                                               mBoring);
4859                if (boring != null) {
4860                    mBoring = boring;
4861                }
4862            }
4863
4864            if (boring != null) {
4865                if (boring.width <= w &&
4866                    (mEllipsize == null || boring.width <= ellipsisWidth)) {
4867                    if (mSavedLayout != null) {
4868                        mLayout = mSavedLayout.
4869                                replaceOrMake(mTransformed, mTextPaint,
4870                                w, alignment, mSpacingMult, mSpacingAdd,
4871                                boring, mIncludePad);
4872                    } else {
4873                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
4874                                w, alignment, mSpacingMult, mSpacingAdd,
4875                                boring, mIncludePad);
4876                    }
4877                    // Log.e("aaa", "Boring: " + mTransformed);
4878
4879                    mSavedLayout = (BoringLayout) mLayout;
4880                } else if (shouldEllipsize && boring.width <= w) {
4881                    if (mSavedLayout != null) {
4882                        mLayout = mSavedLayout.
4883                                replaceOrMake(mTransformed, mTextPaint,
4884                                w, alignment, mSpacingMult, mSpacingAdd,
4885                                boring, mIncludePad, mEllipsize,
4886                                ellipsisWidth);
4887                    } else {
4888                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
4889                                w, alignment, mSpacingMult, mSpacingAdd,
4890                                boring, mIncludePad, mEllipsize,
4891                                ellipsisWidth);
4892                    }
4893                } else if (shouldEllipsize) {
4894                    mLayout = new StaticLayout(mTransformed,
4895                                0, mTransformed.length(),
4896                                mTextPaint, w, alignment, mSpacingMult,
4897                                mSpacingAdd, mIncludePad, mEllipsize,
4898                                ellipsisWidth);
4899                } else {
4900                    mLayout = new StaticLayout(mTransformed, mTextPaint,
4901                            w, alignment, mSpacingMult, mSpacingAdd,
4902                            mIncludePad);
4903                    // Log.e("aaa", "Boring but wide: " + mTransformed);
4904                }
4905            } else if (shouldEllipsize) {
4906                mLayout = new StaticLayout(mTransformed,
4907                            0, mTransformed.length(),
4908                            mTextPaint, w, alignment, mSpacingMult,
4909                            mSpacingAdd, mIncludePad, mEllipsize,
4910                            ellipsisWidth);
4911            } else {
4912                mLayout = new StaticLayout(mTransformed, mTextPaint,
4913                        w, alignment, mSpacingMult, mSpacingAdd,
4914                        mIncludePad);
4915            }
4916        }
4917
4918        shouldEllipsize = mEllipsize != null;
4919        mHintLayout = null;
4920
4921        if (mHint != null) {
4922            if (shouldEllipsize) hintWidth = w;
4923
4924            if (hintBoring == UNKNOWN_BORING) {
4925                hintBoring = BoringLayout.isBoring(mHint, mTextPaint,
4926                                                   mHintBoring);
4927                if (hintBoring != null) {
4928                    mHintBoring = hintBoring;
4929                }
4930            }
4931
4932            if (hintBoring != null) {
4933                if (hintBoring.width <= hintWidth &&
4934                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
4935                    if (mSavedHintLayout != null) {
4936                        mHintLayout = mSavedHintLayout.
4937                                replaceOrMake(mHint, mTextPaint,
4938                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
4939                                hintBoring, mIncludePad);
4940                    } else {
4941                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
4942                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
4943                                hintBoring, mIncludePad);
4944                    }
4945
4946                    mSavedHintLayout = (BoringLayout) mHintLayout;
4947                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
4948                    if (mSavedHintLayout != null) {
4949                        mHintLayout = mSavedHintLayout.
4950                                replaceOrMake(mHint, mTextPaint,
4951                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
4952                                hintBoring, mIncludePad, mEllipsize,
4953                                ellipsisWidth);
4954                    } else {
4955                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
4956                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
4957                                hintBoring, mIncludePad, mEllipsize,
4958                                ellipsisWidth);
4959                    }
4960                } else if (shouldEllipsize) {
4961                    mHintLayout = new StaticLayout(mHint,
4962                                0, mHint.length(),
4963                                mTextPaint, hintWidth, alignment, mSpacingMult,
4964                                mSpacingAdd, mIncludePad, mEllipsize,
4965                                ellipsisWidth);
4966                } else {
4967                    mHintLayout = new StaticLayout(mHint, mTextPaint,
4968                            hintWidth, alignment, mSpacingMult, mSpacingAdd,
4969                            mIncludePad);
4970                }
4971            } else if (shouldEllipsize) {
4972                mHintLayout = new StaticLayout(mHint,
4973                            0, mHint.length(),
4974                            mTextPaint, hintWidth, alignment, mSpacingMult,
4975                            mSpacingAdd, mIncludePad, mEllipsize,
4976                            ellipsisWidth);
4977            } else {
4978                mHintLayout = new StaticLayout(mHint, mTextPaint,
4979                        hintWidth, alignment, mSpacingMult, mSpacingAdd,
4980                        mIncludePad);
4981            }
4982        }
4983
4984        if (bringIntoView) {
4985            registerForPreDraw();
4986        }
4987
4988        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4989            if (!compressText(ellipsisWidth)) {
4990                final int height = mLayoutParams.height;
4991                // If the size of the view does not depend on the size of the text, try to
4992                // start the marquee immediately
4993                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
4994                    startMarquee();
4995                } else {
4996                    // Defer the start of the marquee until we know our width (see setFrame())
4997                    mRestartMarquee = true;
4998                }
4999            }
5000        }
5001    }
5002
5003    private boolean compressText(float width) {
5004        // Only compress the text if it hasn't been compressed by the previous pass
5005        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
5006                mTextPaint.getTextScaleX() == 1.0f) {
5007            final float textWidth = mLayout.getLineWidth(0);
5008            final float overflow = (textWidth + 1.0f - width) / width;
5009            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
5010                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
5011                post(new Runnable() {
5012                    public void run() {
5013                        requestLayout();
5014                    }
5015                });
5016                return true;
5017            }
5018        }
5019
5020        return false;
5021    }
5022
5023    private static int desired(Layout layout) {
5024        int n = layout.getLineCount();
5025        CharSequence text = layout.getText();
5026        float max = 0;
5027
5028        // if any line was wrapped, we can't use it.
5029        // but it's ok for the last line not to have a newline
5030
5031        for (int i = 0; i < n - 1; i++) {
5032            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
5033                return -1;
5034        }
5035
5036        for (int i = 0; i < n; i++) {
5037            max = Math.max(max, layout.getLineWidth(i));
5038        }
5039
5040        return (int) FloatMath.ceil(max);
5041    }
5042
5043    /**
5044     * Set whether the TextView includes extra top and bottom padding to make
5045     * room for accents that go above the normal ascent and descent.
5046     * The default is true.
5047     *
5048     * @attr ref android.R.styleable#TextView_includeFontPadding
5049     */
5050    public void setIncludeFontPadding(boolean includepad) {
5051        mIncludePad = includepad;
5052
5053        if (mLayout != null) {
5054            nullLayouts();
5055            requestLayout();
5056            invalidate();
5057        }
5058    }
5059
5060    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
5061
5062    @Override
5063    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
5064        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
5065        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
5066        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
5067        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
5068
5069        int width;
5070        int height;
5071
5072        BoringLayout.Metrics boring = UNKNOWN_BORING;
5073        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
5074
5075        int des = -1;
5076        boolean fromexisting = false;
5077
5078        if (widthMode == MeasureSpec.EXACTLY) {
5079            // Parent has told us how big to be. So be it.
5080            width = widthSize;
5081        } else {
5082            if (mLayout != null && mEllipsize == null) {
5083                des = desired(mLayout);
5084            }
5085
5086            if (des < 0) {
5087                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mBoring);
5088                if (boring != null) {
5089                    mBoring = boring;
5090                }
5091            } else {
5092                fromexisting = true;
5093            }
5094
5095            if (boring == null || boring == UNKNOWN_BORING) {
5096                if (des < 0) {
5097                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
5098                }
5099
5100                width = des;
5101            } else {
5102                width = boring.width;
5103            }
5104
5105            final Drawables dr = mDrawables;
5106            if (dr != null) {
5107                width = Math.max(width, dr.mDrawableWidthTop);
5108                width = Math.max(width, dr.mDrawableWidthBottom);
5109            }
5110
5111            if (mHint != null) {
5112                int hintDes = -1;
5113                int hintWidth;
5114
5115                if (mHintLayout != null && mEllipsize == null) {
5116                    hintDes = desired(mHintLayout);
5117                }
5118
5119                if (hintDes < 0) {
5120                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mHintBoring);
5121                    if (hintBoring != null) {
5122                        mHintBoring = hintBoring;
5123                    }
5124                }
5125
5126                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
5127                    if (hintDes < 0) {
5128                        hintDes = (int) FloatMath.ceil(
5129                                Layout.getDesiredWidth(mHint, mTextPaint));
5130                    }
5131
5132                    hintWidth = hintDes;
5133                } else {
5134                    hintWidth = hintBoring.width;
5135                }
5136
5137                if (hintWidth > width) {
5138                    width = hintWidth;
5139                }
5140            }
5141
5142            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
5143
5144            if (mMaxWidthMode == EMS) {
5145                width = Math.min(width, mMaxWidth * getLineHeight());
5146            } else {
5147                width = Math.min(width, mMaxWidth);
5148            }
5149
5150            if (mMinWidthMode == EMS) {
5151                width = Math.max(width, mMinWidth * getLineHeight());
5152            } else {
5153                width = Math.max(width, mMinWidth);
5154            }
5155
5156            // Check against our minimum width
5157            width = Math.max(width, getSuggestedMinimumWidth());
5158
5159            if (widthMode == MeasureSpec.AT_MOST) {
5160                width = Math.min(widthSize, width);
5161            }
5162        }
5163
5164        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
5165        int unpaddedWidth = want;
5166        int hintWant = want;
5167
5168        if (mHorizontallyScrolling)
5169            want = VERY_WIDE;
5170
5171        int hintWidth = mHintLayout == null ? hintWant : mHintLayout.getWidth();
5172
5173        if (mLayout == null) {
5174            makeNewLayout(want, hintWant, boring, hintBoring,
5175                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
5176        } else if ((mLayout.getWidth() != want) || (hintWidth != hintWant) ||
5177                   (mLayout.getEllipsizedWidth() !=
5178                        width - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
5179            if (mHint == null && mEllipsize == null &&
5180                    want > mLayout.getWidth() &&
5181                    (mLayout instanceof BoringLayout ||
5182                            (fromexisting && des >= 0 && des <= want))) {
5183                mLayout.increaseWidthTo(want);
5184            } else {
5185                makeNewLayout(want, hintWant, boring, hintBoring,
5186                              width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
5187            }
5188        } else {
5189            // Width has not changed.
5190        }
5191
5192        if (heightMode == MeasureSpec.EXACTLY) {
5193            // Parent has told us how big to be. So be it.
5194            height = heightSize;
5195            mDesiredHeightAtMeasure = -1;
5196        } else {
5197            int desired = getDesiredHeight();
5198
5199            height = desired;
5200            mDesiredHeightAtMeasure = desired;
5201
5202            if (heightMode == MeasureSpec.AT_MOST) {
5203                height = Math.min(desired, heightSize);
5204            }
5205        }
5206
5207        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
5208        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
5209            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
5210        }
5211
5212        /*
5213         * We didn't let makeNewLayout() register to bring the cursor into view,
5214         * so do it here if there is any possibility that it is needed.
5215         */
5216        if (mMovement != null ||
5217            mLayout.getWidth() > unpaddedWidth ||
5218            mLayout.getHeight() > unpaddedHeight) {
5219            registerForPreDraw();
5220        } else {
5221            scrollTo(0, 0);
5222        }
5223
5224        setMeasuredDimension(width, height);
5225    }
5226
5227    private int getDesiredHeight() {
5228        return Math.max(
5229                getDesiredHeight(mLayout, true),
5230                getDesiredHeight(mHintLayout, mEllipsize != null));
5231    }
5232
5233    private int getDesiredHeight(Layout layout, boolean cap) {
5234        if (layout == null) {
5235            return 0;
5236        }
5237
5238        int linecount = layout.getLineCount();
5239        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
5240        int desired = layout.getLineTop(linecount);
5241
5242        final Drawables dr = mDrawables;
5243        if (dr != null) {
5244            desired = Math.max(desired, dr.mDrawableHeightLeft);
5245            desired = Math.max(desired, dr.mDrawableHeightRight);
5246        }
5247
5248        desired += pad;
5249
5250        if (mMaxMode == LINES) {
5251            /*
5252             * Don't cap the hint to a certain number of lines.
5253             * (Do cap it, though, if we have a maximum pixel height.)
5254             */
5255            if (cap) {
5256                if (linecount > mMaximum) {
5257                    desired = layout.getLineTop(mMaximum) +
5258                              layout.getBottomPadding();
5259
5260                    if (dr != null) {
5261                        desired = Math.max(desired, dr.mDrawableHeightLeft);
5262                        desired = Math.max(desired, dr.mDrawableHeightRight);
5263                    }
5264
5265                    desired += pad;
5266                    linecount = mMaximum;
5267                }
5268            }
5269        } else {
5270            desired = Math.min(desired, mMaximum);
5271        }
5272
5273        if (mMinMode == LINES) {
5274            if (linecount < mMinimum) {
5275                desired += getLineHeight() * (mMinimum - linecount);
5276            }
5277        } else {
5278            desired = Math.max(desired, mMinimum);
5279        }
5280
5281        // Check against our minimum height
5282        desired = Math.max(desired, getSuggestedMinimumHeight());
5283
5284        return desired;
5285    }
5286
5287    /**
5288     * Check whether a change to the existing text layout requires a
5289     * new view layout.
5290     */
5291    private void checkForResize() {
5292        boolean sizeChanged = false;
5293
5294        if (mLayout != null) {
5295            // Check if our width changed
5296            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
5297                sizeChanged = true;
5298                invalidate();
5299            }
5300
5301            // Check if our height changed
5302            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
5303                int desiredHeight = getDesiredHeight();
5304
5305                if (desiredHeight != this.getHeight()) {
5306                    sizeChanged = true;
5307                }
5308            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
5309                if (mDesiredHeightAtMeasure >= 0) {
5310                    int desiredHeight = getDesiredHeight();
5311
5312                    if (desiredHeight != mDesiredHeightAtMeasure) {
5313                        sizeChanged = true;
5314                    }
5315                }
5316            }
5317        }
5318
5319        if (sizeChanged) {
5320            requestLayout();
5321            // caller will have already invalidated
5322        }
5323    }
5324
5325    /**
5326     * Check whether entirely new text requires a new view layout
5327     * or merely a new text layout.
5328     */
5329    private void checkForRelayout() {
5330        // If we have a fixed width, we can just swap in a new text layout
5331        // if the text height stays the same or if the view height is fixed.
5332
5333        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
5334                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
5335                (mHint == null || mHintLayout != null) &&
5336                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
5337            // Static width, so try making a new text layout.
5338
5339            int oldht = mLayout.getHeight();
5340            int want = mLayout.getWidth();
5341            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
5342
5343            /*
5344             * No need to bring the text into view, since the size is not
5345             * changing (unless we do the requestLayout(), in which case it
5346             * will happen at measure).
5347             */
5348            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
5349                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
5350                          false);
5351
5352            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
5353                // In a fixed-height view, so use our new text layout.
5354                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
5355                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
5356                    invalidate();
5357                    return;
5358                }
5359
5360                // Dynamic height, but height has stayed the same,
5361                // so use our new text layout.
5362                if (mLayout.getHeight() == oldht &&
5363                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
5364                    invalidate();
5365                    return;
5366                }
5367            }
5368
5369            // We lose: the height has changed and we have a dynamic height.
5370            // Request a new view layout using our new text layout.
5371            requestLayout();
5372            invalidate();
5373        } else {
5374            // Dynamic width, so we have no choice but to request a new
5375            // view layout with a new text layout.
5376
5377            nullLayouts();
5378            requestLayout();
5379            invalidate();
5380        }
5381    }
5382
5383    /**
5384     * Returns true if anything changed.
5385     */
5386    private boolean bringTextIntoView() {
5387        int line = 0;
5388        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5389            line = mLayout.getLineCount() - 1;
5390        }
5391
5392        Layout.Alignment a = mLayout.getParagraphAlignment(line);
5393        int dir = mLayout.getParagraphDirection(line);
5394        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5395        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
5396        int ht = mLayout.getHeight();
5397
5398        int scrollx, scrolly;
5399
5400        if (a == Layout.Alignment.ALIGN_CENTER) {
5401            /*
5402             * Keep centered if possible, or, if it is too wide to fit,
5403             * keep leading edge in view.
5404             */
5405
5406            int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
5407            int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5408
5409            if (right - left < hspace) {
5410                scrollx = (right + left) / 2 - hspace / 2;
5411            } else {
5412                if (dir < 0) {
5413                    scrollx = right - hspace;
5414                } else {
5415                    scrollx = left;
5416                }
5417            }
5418        } else if (a == Layout.Alignment.ALIGN_NORMAL) {
5419            /*
5420             * Keep leading edge in view.
5421             */
5422
5423            if (dir < 0) {
5424                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5425                scrollx = right - hspace;
5426            } else {
5427                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
5428            }
5429        } else /* a == Layout.Alignment.ALIGN_OPPOSITE */ {
5430            /*
5431             * Keep trailing edge in view.
5432             */
5433
5434            if (dir < 0) {
5435                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
5436            } else {
5437                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5438                scrollx = right - hspace;
5439            }
5440        }
5441
5442        if (ht < vspace) {
5443            scrolly = 0;
5444        } else {
5445            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5446                scrolly = ht - vspace;
5447            } else {
5448                scrolly = 0;
5449            }
5450        }
5451
5452        if (scrollx != mScrollX || scrolly != mScrollY) {
5453            scrollTo(scrollx, scrolly);
5454            return true;
5455        } else {
5456            return false;
5457        }
5458    }
5459
5460    /**
5461     * Move the point, specified by the offset, into the view if it is needed.
5462     * This has to be called after layout. Returns true if anything changed.
5463     */
5464    public boolean bringPointIntoView(int offset) {
5465        boolean changed = false;
5466
5467        int line = mLayout.getLineForOffset(offset);
5468
5469        // FIXME: Is it okay to truncate this, or should we round?
5470        final int x = (int)mLayout.getPrimaryHorizontal(offset);
5471        final int top = mLayout.getLineTop(line);
5472        final int bottom = mLayout.getLineTop(line+1);
5473
5474        int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
5475        int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5476        int ht = mLayout.getHeight();
5477
5478        int grav;
5479
5480        switch (mLayout.getParagraphAlignment(line)) {
5481            case ALIGN_NORMAL:
5482                grav = 1;
5483                break;
5484
5485            case ALIGN_OPPOSITE:
5486                grav = -1;
5487                break;
5488
5489            default:
5490                grav = 0;
5491        }
5492
5493        grav *= mLayout.getParagraphDirection(line);
5494
5495        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5496        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
5497
5498        int hslack = (bottom - top) / 2;
5499        int vslack = hslack;
5500
5501        if (vslack > vspace / 4)
5502            vslack = vspace / 4;
5503        if (hslack > hspace / 4)
5504            hslack = hspace / 4;
5505
5506        int hs = mScrollX;
5507        int vs = mScrollY;
5508
5509        if (top - vs < vslack)
5510            vs = top - vslack;
5511        if (bottom - vs > vspace - vslack)
5512            vs = bottom - (vspace - vslack);
5513        if (ht - vs < vspace)
5514            vs = ht - vspace;
5515        if (0 - vs > 0)
5516            vs = 0;
5517
5518        if (grav != 0) {
5519            if (x - hs < hslack) {
5520                hs = x - hslack;
5521            }
5522            if (x - hs > hspace - hslack) {
5523                hs = x - (hspace - hslack);
5524            }
5525        }
5526
5527        if (grav < 0) {
5528            if (left - hs > 0)
5529                hs = left;
5530            if (right - hs < hspace)
5531                hs = right - hspace;
5532        } else if (grav > 0) {
5533            if (right - hs < hspace)
5534                hs = right - hspace;
5535            if (left - hs > 0)
5536                hs = left;
5537        } else /* grav == 0 */ {
5538            if (right - left <= hspace) {
5539                /*
5540                 * If the entire text fits, center it exactly.
5541                 */
5542                hs = left - (hspace - (right - left)) / 2;
5543            } else if (x > right - hslack) {
5544                /*
5545                 * If we are near the right edge, keep the right edge
5546                 * at the edge of the view.
5547                 */
5548                hs = right - hspace;
5549            } else if (x < left + hslack) {
5550                /*
5551                 * If we are near the left edge, keep the left edge
5552                 * at the edge of the view.
5553                 */
5554                hs = left;
5555            } else if (left > hs) {
5556                /*
5557                 * Is there whitespace visible at the left?  Fix it if so.
5558                 */
5559                hs = left;
5560            } else if (right < hs + hspace) {
5561                /*
5562                 * Is there whitespace visible at the right?  Fix it if so.
5563                 */
5564                hs = right - hspace;
5565            } else {
5566                /*
5567                 * Otherwise, float as needed.
5568                 */
5569                if (x - hs < hslack) {
5570                    hs = x - hslack;
5571                }
5572                if (x - hs > hspace - hslack) {
5573                    hs = x - (hspace - hslack);
5574                }
5575            }
5576        }
5577
5578        if (hs != mScrollX || vs != mScrollY) {
5579            if (mScroller == null) {
5580                scrollTo(hs, vs);
5581            } else {
5582                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
5583                int dx = hs - mScrollX;
5584                int dy = vs - mScrollY;
5585
5586                if (duration > ANIMATED_SCROLL_GAP) {
5587                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
5588                    awakenScrollBars(mScroller.getDuration());
5589                    invalidate();
5590                } else {
5591                    if (!mScroller.isFinished()) {
5592                        mScroller.abortAnimation();
5593                    }
5594
5595                    scrollBy(dx, dy);
5596                }
5597
5598                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
5599            }
5600
5601            changed = true;
5602        }
5603
5604        if (isFocused()) {
5605            // This offsets because getInterestingRect() is in terms of
5606            // viewport coordinates, but requestRectangleOnScreen()
5607            // is in terms of content coordinates.
5608
5609            Rect r = new Rect();
5610            getInterestingRect(r, x, top, bottom, line);
5611            r.offset(mScrollX, mScrollY);
5612
5613            if (requestRectangleOnScreen(r)) {
5614                changed = true;
5615            }
5616        }
5617
5618        return changed;
5619    }
5620
5621    /**
5622     * Move the cursor, if needed, so that it is at an offset that is visible
5623     * to the user.  This will not move the cursor if it represents more than
5624     * one character (a selection range).  This will only work if the
5625     * TextView contains spannable text; otherwise it will do nothing.
5626     */
5627    public boolean moveCursorToVisibleOffset() {
5628        if (!(mText instanceof Spannable)) {
5629            return false;
5630        }
5631        int start = Selection.getSelectionStart(mText);
5632        int end = Selection.getSelectionEnd(mText);
5633        if (start != end) {
5634            return false;
5635        }
5636
5637        // First: make sure the line is visible on screen:
5638
5639        int line = mLayout.getLineForOffset(start);
5640
5641        final int top = mLayout.getLineTop(line);
5642        final int bottom = mLayout.getLineTop(line+1);
5643        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
5644        int vslack = (bottom - top) / 2;
5645        if (vslack > vspace / 4)
5646            vslack = vspace / 4;
5647        final int vs = mScrollY;
5648
5649        if (top < (vs+vslack)) {
5650            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
5651        } else if (bottom > (vspace+vs-vslack)) {
5652            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
5653        }
5654
5655        // Next: make sure the character is visible on screen:
5656
5657        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5658        final int hs = mScrollX;
5659        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
5660        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
5661
5662        int newStart = start;
5663        if (newStart < leftChar) {
5664            newStart = leftChar;
5665        } else if (newStart > rightChar) {
5666            newStart = rightChar;
5667        }
5668
5669        if (newStart != start) {
5670            Selection.setSelection((Spannable)mText, newStart);
5671            return true;
5672        }
5673
5674        return false;
5675    }
5676
5677    @Override
5678    public void computeScroll() {
5679        if (mScroller != null) {
5680            if (mScroller.computeScrollOffset()) {
5681                mScrollX = mScroller.getCurrX();
5682                mScrollY = mScroller.getCurrY();
5683                postInvalidate();  // So we draw again
5684            }
5685        }
5686    }
5687
5688    private void getInterestingRect(Rect r, int h, int top, int bottom,
5689                                    int line) {
5690        int paddingTop = getExtendedPaddingTop();
5691        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5692            paddingTop += getVerticalOffset(false);
5693        }
5694        top += paddingTop;
5695        bottom += paddingTop;
5696        h += getCompoundPaddingLeft();
5697
5698        if (line == 0)
5699            top -= getExtendedPaddingTop();
5700        if (line == mLayout.getLineCount() - 1)
5701            bottom += getExtendedPaddingBottom();
5702
5703        r.set(h, top, h+1, bottom);
5704        r.offset(-mScrollX, -mScrollY);
5705    }
5706
5707    @Override
5708    public void debug(int depth) {
5709        super.debug(depth);
5710
5711        String output = debugIndent(depth);
5712        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
5713                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
5714                + "} ";
5715
5716        if (mText != null) {
5717
5718            output += "mText=\"" + mText + "\" ";
5719            if (mLayout != null) {
5720                output += "mLayout width=" + mLayout.getWidth()
5721                        + " height=" + mLayout.getHeight();
5722            }
5723        } else {
5724            output += "mText=NULL";
5725        }
5726        Log.d(VIEW_LOG_TAG, output);
5727    }
5728
5729    /**
5730     * Convenience for {@link Selection#getSelectionStart}.
5731     */
5732    @ViewDebug.ExportedProperty
5733    public int getSelectionStart() {
5734        return Selection.getSelectionStart(getText());
5735    }
5736
5737    /**
5738     * Convenience for {@link Selection#getSelectionEnd}.
5739     */
5740    @ViewDebug.ExportedProperty
5741    public int getSelectionEnd() {
5742        return Selection.getSelectionEnd(getText());
5743    }
5744
5745    /**
5746     * Return true iff there is a selection inside this text view.
5747     */
5748    public boolean hasSelection() {
5749        return getSelectionStart() != getSelectionEnd();
5750    }
5751
5752    /**
5753     * Sets the properties of this field (lines, horizontally scrolling,
5754     * transformation method) to be for a single-line input.
5755     *
5756     * @attr ref android.R.styleable#TextView_singleLine
5757     */
5758    public void setSingleLine() {
5759        setSingleLine(true);
5760    }
5761
5762    /**
5763     * If true, sets the properties of this field (lines, horizontally
5764     * scrolling, transformation method) to be for a single-line input;
5765     * if false, restores these to the default conditions.
5766     * Note that calling this with false restores default conditions,
5767     * not necessarily those that were in effect prior to calling
5768     * it with true.
5769     *
5770     * @attr ref android.R.styleable#TextView_singleLine
5771     */
5772    @android.view.RemotableViewMethod
5773    public void setSingleLine(boolean singleLine) {
5774        if ((mInputType&EditorInfo.TYPE_MASK_CLASS)
5775                == EditorInfo.TYPE_CLASS_TEXT) {
5776            if (singleLine) {
5777                mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
5778            } else {
5779                mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
5780            }
5781        }
5782        applySingleLine(singleLine, true);
5783    }
5784
5785    private void applySingleLine(boolean singleLine, boolean applyTransformation) {
5786        mSingleLine = singleLine;
5787        if (singleLine) {
5788            setLines(1);
5789            setHorizontallyScrolling(true);
5790            if (applyTransformation) {
5791                setTransformationMethod(SingleLineTransformationMethod.
5792                                        getInstance());
5793            }
5794        } else {
5795            setMaxLines(Integer.MAX_VALUE);
5796            setHorizontallyScrolling(false);
5797            if (applyTransformation) {
5798                setTransformationMethod(null);
5799            }
5800        }
5801    }
5802
5803    /**
5804     * Causes words in the text that are longer than the view is wide
5805     * to be ellipsized instead of broken in the middle.  You may also
5806     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
5807     * to constrain the text to a single line.  Use <code>null</code>
5808     * to turn off ellipsizing.
5809     *
5810     * @attr ref android.R.styleable#TextView_ellipsize
5811     */
5812    public void setEllipsize(TextUtils.TruncateAt where) {
5813        mEllipsize = where;
5814
5815        if (mLayout != null) {
5816            nullLayouts();
5817            requestLayout();
5818            invalidate();
5819        }
5820    }
5821
5822    /**
5823     * Sets how many times to repeat the marquee animation. Only applied if the
5824     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
5825     *
5826     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
5827     */
5828    public void setMarqueeRepeatLimit(int marqueeLimit) {
5829        mMarqueeRepeatLimit = marqueeLimit;
5830    }
5831
5832    /**
5833     * Returns where, if anywhere, words that are longer than the view
5834     * is wide should be ellipsized.
5835     */
5836    @ViewDebug.ExportedProperty
5837    public TextUtils.TruncateAt getEllipsize() {
5838        return mEllipsize;
5839    }
5840
5841    /**
5842     * Set the TextView so that when it takes focus, all the text is
5843     * selected.
5844     *
5845     * @attr ref android.R.styleable#TextView_selectAllOnFocus
5846     */
5847    @android.view.RemotableViewMethod
5848    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
5849        mSelectAllOnFocus = selectAllOnFocus;
5850
5851        if (selectAllOnFocus && !(mText instanceof Spannable)) {
5852            setText(mText, BufferType.SPANNABLE);
5853        }
5854    }
5855
5856    /**
5857     * Set whether the cursor is visible.  The default is true.
5858     *
5859     * @attr ref android.R.styleable#TextView_cursorVisible
5860     */
5861    @android.view.RemotableViewMethod
5862    public void setCursorVisible(boolean visible) {
5863        mCursorVisible = visible;
5864        invalidate();
5865
5866        if (visible) {
5867            makeBlink();
5868        } else if (mBlink != null) {
5869            mBlink.removeCallbacks(mBlink);
5870        }
5871    }
5872
5873    private boolean canMarquee() {
5874        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
5875        return width > 0 && mLayout.getLineWidth(0) > width;
5876    }
5877
5878    private void startMarquee() {
5879        // Do not ellipsize EditText
5880        if (mInput != null) return;
5881
5882        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
5883            return;
5884        }
5885
5886        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
5887                getLineCount() == 1 && canMarquee()) {
5888
5889            if (mMarquee == null) mMarquee = new Marquee(this);
5890            mMarquee.start(mMarqueeRepeatLimit);
5891        }
5892    }
5893
5894    private void stopMarquee() {
5895        if (mMarquee != null && !mMarquee.isStopped()) {
5896            mMarquee.stop();
5897        }
5898    }
5899
5900    private void startStopMarquee(boolean start) {
5901        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5902            if (start) {
5903                startMarquee();
5904            } else {
5905                stopMarquee();
5906            }
5907        }
5908    }
5909
5910    private static final class Marquee extends Handler {
5911        // TODO: Add an option to configure this
5912        private static final float MARQUEE_DELTA_MAX = 0.07f;
5913        private static final int MARQUEE_DELAY = 1200;
5914        private static final int MARQUEE_RESTART_DELAY = 1200;
5915        private static final int MARQUEE_RESOLUTION = 1000 / 30;
5916        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
5917
5918        private static final byte MARQUEE_STOPPED = 0x0;
5919        private static final byte MARQUEE_STARTING = 0x1;
5920        private static final byte MARQUEE_RUNNING = 0x2;
5921
5922        private static final int MESSAGE_START = 0x1;
5923        private static final int MESSAGE_TICK = 0x2;
5924        private static final int MESSAGE_RESTART = 0x3;
5925
5926        private final WeakReference<TextView> mView;
5927
5928        private byte mStatus = MARQUEE_STOPPED;
5929        private float mScrollUnit;
5930        private float mMaxScroll;
5931        float mMaxFadeScroll;
5932        private float mGhostStart;
5933        private float mGhostOffset;
5934        private float mFadeStop;
5935        private int mRepeatLimit;
5936
5937        float mScroll;
5938
5939        Marquee(TextView v) {
5940            final float density = v.getContext().getResources().getDisplayMetrics().density;
5941            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / (float) MARQUEE_RESOLUTION;
5942            mView = new WeakReference<TextView>(v);
5943        }
5944
5945        @Override
5946        public void handleMessage(Message msg) {
5947            switch (msg.what) {
5948                case MESSAGE_START:
5949                    mStatus = MARQUEE_RUNNING;
5950                    tick();
5951                    break;
5952                case MESSAGE_TICK:
5953                    tick();
5954                    break;
5955                case MESSAGE_RESTART:
5956                    if (mStatus == MARQUEE_RUNNING) {
5957                        if (mRepeatLimit >= 0) {
5958                            mRepeatLimit--;
5959                        }
5960                        start(mRepeatLimit);
5961                    }
5962                    break;
5963            }
5964        }
5965
5966        void tick() {
5967            if (mStatus != MARQUEE_RUNNING) {
5968                return;
5969            }
5970
5971            removeMessages(MESSAGE_TICK);
5972
5973            final TextView textView = mView.get();
5974            if (textView != null && (textView.isFocused() || textView.isSelected())) {
5975                mScroll += mScrollUnit;
5976                if (mScroll > mMaxScroll) {
5977                    mScroll = mMaxScroll;
5978                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
5979                } else {
5980                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
5981                }
5982                textView.invalidate();
5983            }
5984        }
5985
5986        void stop() {
5987            mStatus = MARQUEE_STOPPED;
5988            removeMessages(MESSAGE_START);
5989            removeMessages(MESSAGE_RESTART);
5990            removeMessages(MESSAGE_TICK);
5991            resetScroll();
5992        }
5993
5994        private void resetScroll() {
5995            mScroll = 0.0f;
5996            final TextView textView = mView.get();
5997            if (textView != null) textView.invalidate();
5998        }
5999
6000        void start(int repeatLimit) {
6001            if (repeatLimit == 0) {
6002                stop();
6003                return;
6004            }
6005            mRepeatLimit = repeatLimit;
6006            final TextView textView = mView.get();
6007            if (textView != null && textView.mLayout != null) {
6008                mStatus = MARQUEE_STARTING;
6009                mScroll = 0.0f;
6010                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
6011                        textView.getCompoundPaddingRight();
6012                final float lineWidth = textView.mLayout.getLineWidth(0);
6013                final float gap = textWidth / 3.0f;
6014                mGhostStart = lineWidth - textWidth + gap;
6015                mMaxScroll = mGhostStart + textWidth;
6016                mGhostOffset = lineWidth + gap;
6017                mFadeStop = lineWidth + textWidth / 6.0f;
6018                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
6019
6020                textView.invalidate();
6021                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
6022            }
6023        }
6024
6025        float getGhostOffset() {
6026            return mGhostOffset;
6027        }
6028
6029        boolean shouldDrawLeftFade() {
6030            return mScroll <= mFadeStop;
6031        }
6032
6033        boolean shouldDrawGhost() {
6034            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
6035        }
6036
6037        boolean isRunning() {
6038            return mStatus == MARQUEE_RUNNING;
6039        }
6040
6041        boolean isStopped() {
6042            return mStatus == MARQUEE_STOPPED;
6043        }
6044    }
6045
6046    /**
6047     * This method is called when the text is changed, in case any
6048     * subclasses would like to know.
6049     *
6050     * @param text The text the TextView is displaying.
6051     * @param start The offset of the start of the range of the text
6052     *              that was modified.
6053     * @param before The offset of the former end of the range of the
6054     *               text that was modified.  If text was simply inserted,
6055     *               this will be the same as <code>start</code>.
6056     *               If text was replaced with new text or deleted, the
6057     *               length of the old text was <code>before-start</code>.
6058     * @param after The offset of the end of the range of the text
6059     *              that was modified.  If text was simply deleted,
6060     *              this will be the same as <code>start</code>.
6061     *              If text was replaced with new text or inserted,
6062     *              the length of the new text is <code>after-start</code>.
6063     */
6064    protected void onTextChanged(CharSequence text,
6065                                 int start, int before, int after) {
6066    }
6067
6068    /**
6069     * This method is called when the selection has changed, in case any
6070     * subclasses would like to know.
6071     *
6072     * @param selStart The new selection start location.
6073     * @param selEnd The new selection end location.
6074     */
6075    protected void onSelectionChanged(int selStart, int selEnd) {
6076    }
6077
6078    /**
6079     * Adds a TextWatcher to the list of those whose methods are called
6080     * whenever this TextView's text changes.
6081     * <p>
6082     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
6083     * not called after {@link #setText} calls.  Now, doing {@link #setText}
6084     * if there are any text changed listeners forces the buffer type to
6085     * Editable if it would not otherwise be and does call this method.
6086     */
6087    public void addTextChangedListener(TextWatcher watcher) {
6088        if (mListeners == null) {
6089            mListeners = new ArrayList<TextWatcher>();
6090        }
6091
6092        mListeners.add(watcher);
6093    }
6094
6095    /**
6096     * Removes the specified TextWatcher from the list of those whose
6097     * methods are called
6098     * whenever this TextView's text changes.
6099     */
6100    public void removeTextChangedListener(TextWatcher watcher) {
6101        if (mListeners != null) {
6102            int i = mListeners.indexOf(watcher);
6103
6104            if (i >= 0) {
6105                mListeners.remove(i);
6106            }
6107        }
6108    }
6109
6110    private void sendBeforeTextChanged(CharSequence text, int start, int before,
6111                                   int after) {
6112        if (mListeners != null) {
6113            final ArrayList<TextWatcher> list = mListeners;
6114            final int count = list.size();
6115            for (int i = 0; i < count; i++) {
6116                list.get(i).beforeTextChanged(text, start, before, after);
6117            }
6118        }
6119    }
6120
6121    /**
6122     * Not private so it can be called from an inner class without going
6123     * through a thunk.
6124     */
6125    void sendOnTextChanged(CharSequence text, int start, int before,
6126                                   int after) {
6127        if (mListeners != null) {
6128            final ArrayList<TextWatcher> list = mListeners;
6129            final int count = list.size();
6130            for (int i = 0; i < count; i++) {
6131                list.get(i).onTextChanged(text, start, before, after);
6132            }
6133        }
6134    }
6135
6136    /**
6137     * Not private so it can be called from an inner class without going
6138     * through a thunk.
6139     */
6140    void sendAfterTextChanged(Editable text) {
6141        if (mListeners != null) {
6142            final ArrayList<TextWatcher> list = mListeners;
6143            final int count = list.size();
6144            for (int i = 0; i < count; i++) {
6145                list.get(i).afterTextChanged(text);
6146            }
6147        }
6148    }
6149
6150    /**
6151     * Not private so it can be called from an inner class without going
6152     * through a thunk.
6153     */
6154    void handleTextChanged(CharSequence buffer, int start,
6155            int before, int after) {
6156        final InputMethodState ims = mInputMethodState;
6157        if (ims == null || ims.mBatchEditNesting == 0) {
6158            updateAfterEdit();
6159        }
6160        if (ims != null) {
6161            ims.mContentChanged = true;
6162            if (ims.mChangedStart < 0) {
6163                ims.mChangedStart = start;
6164                ims.mChangedEnd = start+before;
6165            } else {
6166                if (ims.mChangedStart > start) ims.mChangedStart = start;
6167                if (ims.mChangedEnd < (start+before)) ims.mChangedEnd = start+before;
6168            }
6169            ims.mChangedDelta += after-before;
6170        }
6171
6172        sendOnTextChanged(buffer, start, before, after);
6173        onTextChanged(buffer, start, before, after);
6174    }
6175
6176    /**
6177     * Not private so it can be called from an inner class without going
6178     * through a thunk.
6179     */
6180    void spanChange(Spanned buf, Object what, int oldStart, int newStart,
6181            int oldEnd, int newEnd) {
6182        // XXX Make the start and end move together if this ends up
6183        // spending too much time invalidating.
6184
6185        boolean selChanged = false;
6186        int newSelStart=-1, newSelEnd=-1;
6187
6188        final InputMethodState ims = mInputMethodState;
6189
6190        if (what == Selection.SELECTION_END) {
6191            mHighlightPathBogus = true;
6192            selChanged = true;
6193            newSelEnd = newStart;
6194
6195            if (!isFocused()) {
6196                mSelectionMoved = true;
6197            }
6198
6199            if (oldStart >= 0 || newStart >= 0) {
6200                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
6201                registerForPreDraw();
6202
6203                if (isFocused()) {
6204                    mShowCursor = SystemClock.uptimeMillis();
6205                    makeBlink();
6206                }
6207            }
6208        }
6209
6210        if (what == Selection.SELECTION_START) {
6211            mHighlightPathBogus = true;
6212            selChanged = true;
6213            newSelStart = newStart;
6214
6215            if (!isFocused()) {
6216                mSelectionMoved = true;
6217            }
6218
6219            if (oldStart >= 0 || newStart >= 0) {
6220                int end = Selection.getSelectionEnd(buf);
6221                invalidateCursor(end, oldStart, newStart);
6222            }
6223        }
6224
6225        if (selChanged) {
6226            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
6227                if (newSelStart < 0) {
6228                    newSelStart = Selection.getSelectionStart(buf);
6229                }
6230                if (newSelEnd < 0) {
6231                    newSelEnd = Selection.getSelectionEnd(buf);
6232                }
6233                onSelectionChanged(newSelStart, newSelEnd);
6234            }
6235        }
6236
6237        if (what instanceof UpdateAppearance ||
6238            what instanceof ParagraphStyle) {
6239            if (ims == null || ims.mBatchEditNesting == 0) {
6240                invalidate();
6241                mHighlightPathBogus = true;
6242                checkForResize();
6243            } else {
6244                ims.mContentChanged = true;
6245            }
6246        }
6247
6248        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
6249            mHighlightPathBogus = true;
6250            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
6251                ims.mSelectionModeChanged = true;
6252            }
6253
6254            if (Selection.getSelectionStart(buf) >= 0) {
6255                if (ims == null || ims.mBatchEditNesting == 0) {
6256                    invalidateCursor();
6257                } else {
6258                    ims.mCursorChanged = true;
6259                }
6260            }
6261        }
6262
6263        if (what instanceof ParcelableSpan) {
6264            // If this is a span that can be sent to a remote process,
6265            // the current extract editor would be interested in it.
6266            if (ims != null && ims.mExtracting != null) {
6267                if (ims.mBatchEditNesting != 0) {
6268                    if (oldStart >= 0) {
6269                        if (ims.mChangedStart > oldStart) {
6270                            ims.mChangedStart = oldStart;
6271                        }
6272                        if (ims.mChangedStart > oldEnd) {
6273                            ims.mChangedStart = oldEnd;
6274                        }
6275                    }
6276                    if (newStart >= 0) {
6277                        if (ims.mChangedStart > newStart) {
6278                            ims.mChangedStart = newStart;
6279                        }
6280                        if (ims.mChangedStart > newEnd) {
6281                            ims.mChangedStart = newEnd;
6282                        }
6283                    }
6284                } else {
6285                    if (DEBUG_EXTRACT) Log.v(TAG, "Span change outside of batch: "
6286                            + oldStart + "-" + oldEnd + ","
6287                            + newStart + "-" + newEnd + what);
6288                    ims.mContentChanged = true;
6289                }
6290            }
6291        }
6292    }
6293
6294    private class ChangeWatcher
6295    implements TextWatcher, SpanWatcher {
6296
6297        private CharSequence mBeforeText;
6298
6299        public void beforeTextChanged(CharSequence buffer, int start,
6300                                      int before, int after) {
6301            if (DEBUG_EXTRACT) Log.v(TAG, "beforeTextChanged start=" + start
6302                    + " before=" + before + " after=" + after + ": " + buffer);
6303
6304            if (AccessibilityManager.getInstance(mContext).isEnabled()
6305                    && !isPasswordInputType(mInputType)) {
6306                mBeforeText = buffer.toString();
6307            }
6308
6309            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
6310        }
6311
6312        public void onTextChanged(CharSequence buffer, int start,
6313                                  int before, int after) {
6314            if (DEBUG_EXTRACT) Log.v(TAG, "onTextChanged start=" + start
6315                    + " before=" + before + " after=" + after + ": " + buffer);
6316            TextView.this.handleTextChanged(buffer, start, before, after);
6317
6318            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
6319                    (isFocused() || isSelected() &&
6320                    isShown())) {
6321                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
6322                mBeforeText = null;
6323            }
6324        }
6325
6326        public void afterTextChanged(Editable buffer) {
6327            if (DEBUG_EXTRACT) Log.v(TAG, "afterTextChanged: " + buffer);
6328            TextView.this.sendAfterTextChanged(buffer);
6329
6330            if (MetaKeyKeyListener.getMetaState(buffer,
6331                                 MetaKeyKeyListener.META_SELECTING) != 0) {
6332                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
6333            }
6334        }
6335
6336        public void onSpanChanged(Spannable buf,
6337                                  Object what, int s, int e, int st, int en) {
6338            if (DEBUG_EXTRACT) Log.v(TAG, "onSpanChanged s=" + s + " e=" + e
6339                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
6340            TextView.this.spanChange(buf, what, s, st, e, en);
6341        }
6342
6343        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
6344            if (DEBUG_EXTRACT) Log.v(TAG, "onSpanAdded s=" + s + " e=" + e
6345                    + " what=" + what + ": " + buf);
6346            TextView.this.spanChange(buf, what, -1, s, -1, e);
6347        }
6348
6349        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
6350            if (DEBUG_EXTRACT) Log.v(TAG, "onSpanRemoved s=" + s + " e=" + e
6351                    + " what=" + what + ": " + buf);
6352            TextView.this.spanChange(buf, what, s, -1, e, -1);
6353        }
6354    }
6355
6356    private void makeBlink() {
6357        if (!mCursorVisible) {
6358            if (mBlink != null) {
6359                mBlink.removeCallbacks(mBlink);
6360            }
6361
6362            return;
6363        }
6364
6365        if (mBlink == null)
6366            mBlink = new Blink(this);
6367
6368        mBlink.removeCallbacks(mBlink);
6369        mBlink.postAtTime(mBlink, mShowCursor + BLINK);
6370    }
6371
6372    /**
6373     * @hide
6374     */
6375    @Override
6376    public void dispatchFinishTemporaryDetach() {
6377        mDispatchTemporaryDetach = true;
6378        super.dispatchFinishTemporaryDetach();
6379        mDispatchTemporaryDetach = false;
6380    }
6381
6382    @Override
6383    public void onStartTemporaryDetach() {
6384        super.onStartTemporaryDetach();
6385        // Only track when onStartTemporaryDetach() is called directly,
6386        // usually because this instance is an editable field in a list
6387        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
6388    }
6389
6390    @Override
6391    public void onFinishTemporaryDetach() {
6392        super.onFinishTemporaryDetach();
6393        // Only track when onStartTemporaryDetach() is called directly,
6394        // usually because this instance is an editable field in a list
6395        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
6396    }
6397
6398    @Override
6399    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
6400        if (mTemporaryDetach) {
6401            // If we are temporarily in the detach state, then do nothing.
6402            super.onFocusChanged(focused, direction, previouslyFocusedRect);
6403            return;
6404        }
6405
6406        mShowCursor = SystemClock.uptimeMillis();
6407
6408        ensureEndedBatchEdit();
6409
6410        if (focused) {
6411            int selStart = getSelectionStart();
6412            int selEnd = getSelectionEnd();
6413
6414            if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) {
6415                boolean selMoved = mSelectionMoved;
6416
6417                if (mMovement != null) {
6418                    mMovement.onTakeFocus(this, (Spannable) mText, direction);
6419                }
6420
6421                if (mSelectAllOnFocus) {
6422                    Selection.setSelection((Spannable) mText, 0, mText.length());
6423                }
6424
6425                if (selMoved && selStart >= 0 && selEnd >= 0) {
6426                    /*
6427                     * Someone intentionally set the selection, so let them
6428                     * do whatever it is that they wanted to do instead of
6429                     * the default on-focus behavior.  We reset the selection
6430                     * here instead of just skipping the onTakeFocus() call
6431                     * because some movement methods do something other than
6432                     * just setting the selection in theirs and we still
6433                     * need to go through that path.
6434                     */
6435
6436                    Selection.setSelection((Spannable) mText, selStart, selEnd);
6437                }
6438                mTouchFocusSelected = true;
6439            }
6440
6441            mFrozenWithFocus = false;
6442            mSelectionMoved = false;
6443
6444            if (mText instanceof Spannable) {
6445                Spannable sp = (Spannable) mText;
6446                MetaKeyKeyListener.resetMetaState(sp);
6447            }
6448
6449            makeBlink();
6450
6451            if (mError != null) {
6452                showError();
6453            }
6454        } else {
6455            if (mError != null) {
6456                hideError();
6457            }
6458            // Don't leave us in the middle of a batch edit.
6459            onEndBatchEdit();
6460        }
6461
6462        startStopMarquee(focused);
6463
6464        if (mTransformation != null) {
6465            mTransformation.onFocusChanged(this, mText, focused, direction,
6466                                           previouslyFocusedRect);
6467        }
6468
6469        super.onFocusChanged(focused, direction, previouslyFocusedRect);
6470    }
6471
6472    @Override
6473    public void onWindowFocusChanged(boolean hasWindowFocus) {
6474        super.onWindowFocusChanged(hasWindowFocus);
6475
6476        if (hasWindowFocus) {
6477            if (mBlink != null) {
6478                mBlink.uncancel();
6479
6480                if (isFocused()) {
6481                    mShowCursor = SystemClock.uptimeMillis();
6482                    makeBlink();
6483                }
6484            }
6485        } else {
6486            if (mBlink != null) {
6487                mBlink.cancel();
6488            }
6489            // Don't leave us in the middle of a batch edit.
6490            onEndBatchEdit();
6491            if (mInputContentType != null) {
6492                mInputContentType.enterDown = false;
6493            }
6494        }
6495
6496        startStopMarquee(hasWindowFocus);
6497    }
6498
6499    /**
6500     * Use {@link BaseInputConnection#removeComposingSpans
6501     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
6502     * state from this text view.
6503     */
6504    public void clearComposingText() {
6505        if (mText instanceof Spannable) {
6506            BaseInputConnection.removeComposingSpans((Spannable)mText);
6507        }
6508    }
6509
6510    @Override
6511    public void setSelected(boolean selected) {
6512        boolean wasSelected = isSelected();
6513
6514        super.setSelected(selected);
6515
6516        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6517            if (selected) {
6518                startMarquee();
6519            } else {
6520                stopMarquee();
6521            }
6522        }
6523    }
6524
6525    class CommitSelectionReceiver extends ResultReceiver {
6526        int mNewStart;
6527        int mNewEnd;
6528
6529        CommitSelectionReceiver() {
6530            super(getHandler());
6531        }
6532
6533        protected void onReceiveResult(int resultCode, Bundle resultData) {
6534            if (resultCode != InputMethodManager.RESULT_SHOWN) {
6535                final int len = mText.length();
6536                if (mNewStart > len) {
6537                    mNewStart = len;
6538                }
6539                if (mNewEnd > len) {
6540                    mNewEnd = len;
6541                }
6542                Selection.setSelection((Spannable)mText, mNewStart, mNewEnd);
6543            }
6544        }
6545    }
6546
6547    @Override
6548    public boolean onTouchEvent(MotionEvent event) {
6549        final int action = event.getAction();
6550        if (action == MotionEvent.ACTION_DOWN) {
6551            // Reset this state; it will be re-set if super.onTouchEvent
6552            // causes focus to move to the view.
6553            mTouchFocusSelected = false;
6554            mScrolled = false;
6555        }
6556
6557        final boolean superResult = super.onTouchEvent(event);
6558
6559        /*
6560         * Don't handle the release after a long press, because it will
6561         * move the selection away from whatever the menu action was
6562         * trying to affect.
6563         */
6564        if (mEatTouchRelease && action == MotionEvent.ACTION_UP) {
6565            mEatTouchRelease = false;
6566            return superResult;
6567        }
6568
6569        if ((mMovement != null || onCheckIsTextEditor()) && mText instanceof Spannable && mLayout != null) {
6570
6571            boolean handled = false;
6572
6573            int oldSelStart = Selection.getSelectionStart(mText);
6574            int oldSelEnd = Selection.getSelectionEnd(mText);
6575
6576            if (mMovement != null) {
6577                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
6578            }
6579
6580            if (mText instanceof Editable && onCheckIsTextEditor()) {
6581                if (action == MotionEvent.ACTION_UP && isFocused() && !mScrolled) {
6582                    InputMethodManager imm = (InputMethodManager)
6583                            getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
6584
6585                    // This is going to be gross...  if tapping on the text view
6586                    // causes the IME to be displayed, we don't want the selection
6587                    // to change.  But the selection has already changed, and
6588                    // we won't know right away whether the IME is getting
6589                    // displayed, so...
6590
6591                    int newSelStart = Selection.getSelectionStart(mText);
6592                    int newSelEnd = Selection.getSelectionEnd(mText);
6593                    CommitSelectionReceiver csr = null;
6594                    if (newSelStart != oldSelStart || newSelEnd != oldSelEnd) {
6595                        csr = new CommitSelectionReceiver();
6596                        csr.mNewStart = newSelStart;
6597                        csr.mNewEnd = newSelEnd;
6598                    }
6599
6600                    if (imm.showSoftInput(this, 0, csr) && csr != null) {
6601                        // The IME might get shown -- revert to the old
6602                        // selection, and change to the new when we finally
6603                        // find out of it is okay.
6604                        Selection.setSelection((Spannable)mText, oldSelStart, oldSelEnd);
6605                        handled = true;
6606                    }
6607                }
6608            }
6609
6610            if (handled) {
6611                return true;
6612            }
6613        }
6614
6615        return superResult;
6616    }
6617
6618    /**
6619     * Returns true, only while processing a touch gesture, if the initial
6620     * touch down event caused focus to move to the text view and as a result
6621     * its selection changed.  Only valid while processing the touch gesture
6622     * of interest.
6623     */
6624    public boolean didTouchFocusSelect() {
6625        return mTouchFocusSelected;
6626    }
6627
6628    @Override
6629    public void cancelLongPress() {
6630        super.cancelLongPress();
6631        mScrolled = true;
6632    }
6633
6634    @Override
6635    public boolean onTrackballEvent(MotionEvent event) {
6636        if (mMovement != null && mText instanceof Spannable &&
6637            mLayout != null) {
6638            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
6639                return true;
6640            }
6641        }
6642
6643        return super.onTrackballEvent(event);
6644    }
6645
6646    public void setScroller(Scroller s) {
6647        mScroller = s;
6648    }
6649
6650    private static class Blink extends Handler implements Runnable {
6651        private WeakReference<TextView> mView;
6652        private boolean mCancelled;
6653
6654        public Blink(TextView v) {
6655            mView = new WeakReference<TextView>(v);
6656        }
6657
6658        public void run() {
6659            if (mCancelled) {
6660                return;
6661            }
6662
6663            removeCallbacks(Blink.this);
6664
6665            TextView tv = mView.get();
6666
6667            if (tv != null && tv.isFocused()) {
6668                int st = Selection.getSelectionStart(tv.mText);
6669                int en = Selection.getSelectionEnd(tv.mText);
6670
6671                if (st == en && st >= 0 && en >= 0) {
6672                    if (tv.mLayout != null) {
6673                        tv.invalidateCursorPath();
6674                    }
6675
6676                    postAtTime(this, SystemClock.uptimeMillis() + BLINK);
6677                }
6678            }
6679        }
6680
6681        void cancel() {
6682            if (!mCancelled) {
6683                removeCallbacks(Blink.this);
6684                mCancelled = true;
6685            }
6686        }
6687
6688        void uncancel() {
6689            mCancelled = false;
6690        }
6691    }
6692
6693    @Override
6694    protected float getLeftFadingEdgeStrength() {
6695        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6696            if (mMarquee != null && !mMarquee.isStopped()) {
6697                final Marquee marquee = mMarquee;
6698                if (marquee.shouldDrawLeftFade()) {
6699                    return marquee.mScroll / getHorizontalFadingEdgeLength();
6700                } else {
6701                    return 0.0f;
6702                }
6703            } else if (getLineCount() == 1) {
6704                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
6705                    case Gravity.LEFT:
6706                        return 0.0f;
6707                    case Gravity.RIGHT:
6708                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
6709                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
6710                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
6711                    case Gravity.CENTER_HORIZONTAL:
6712                        return 0.0f;
6713                }
6714            }
6715        }
6716        return super.getLeftFadingEdgeStrength();
6717    }
6718
6719    @Override
6720    protected float getRightFadingEdgeStrength() {
6721        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6722            if (mMarquee != null && !mMarquee.isStopped()) {
6723                final Marquee marquee = mMarquee;
6724                return (marquee.mMaxFadeScroll - marquee.mScroll) / getHorizontalFadingEdgeLength();
6725            } else if (getLineCount() == 1) {
6726                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
6727                    case Gravity.LEFT:
6728                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
6729                                getCompoundPaddingRight();
6730                        final float lineWidth = mLayout.getLineWidth(0);
6731                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
6732                    case Gravity.RIGHT:
6733                        return 0.0f;
6734                    case Gravity.CENTER_HORIZONTAL:
6735                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
6736                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
6737                                getHorizontalFadingEdgeLength();
6738                }
6739            }
6740        }
6741        return super.getRightFadingEdgeStrength();
6742    }
6743
6744    @Override
6745    protected int computeHorizontalScrollRange() {
6746        if (mLayout != null)
6747            return mLayout.getWidth();
6748
6749        return super.computeHorizontalScrollRange();
6750    }
6751
6752    @Override
6753    protected int computeVerticalScrollRange() {
6754        if (mLayout != null)
6755            return mLayout.getHeight();
6756
6757        return super.computeVerticalScrollRange();
6758    }
6759
6760    @Override
6761    protected int computeVerticalScrollExtent() {
6762        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
6763    }
6764
6765    public enum BufferType {
6766        NORMAL, SPANNABLE, EDITABLE,
6767    }
6768
6769    /**
6770     * Returns the TextView_textColor attribute from the
6771     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
6772     * from the TextView_textAppearance attribute, if TextView_textColor
6773     * was not set directly.
6774     */
6775    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
6776        ColorStateList colors;
6777        colors = attrs.getColorStateList(com.android.internal.R.styleable.
6778                                         TextView_textColor);
6779
6780        if (colors == null) {
6781            int ap = attrs.getResourceId(com.android.internal.R.styleable.
6782                                         TextView_textAppearance, -1);
6783            if (ap != -1) {
6784                TypedArray appearance;
6785                appearance = context.obtainStyledAttributes(ap,
6786                                            com.android.internal.R.styleable.TextAppearance);
6787                colors = appearance.getColorStateList(com.android.internal.R.styleable.
6788                                                  TextAppearance_textColor);
6789                appearance.recycle();
6790            }
6791        }
6792
6793        return colors;
6794    }
6795
6796    /**
6797     * Returns the default color from the TextView_textColor attribute
6798     * from the AttributeSet, if set, or the default color from the
6799     * TextAppearance_textColor from the TextView_textAppearance attribute,
6800     * if TextView_textColor was not set directly.
6801     */
6802    public static int getTextColor(Context context,
6803                                   TypedArray attrs,
6804                                   int def) {
6805        ColorStateList colors = getTextColors(context, attrs);
6806
6807        if (colors == null) {
6808            return def;
6809        } else {
6810            return colors.getDefaultColor();
6811        }
6812    }
6813
6814    @Override
6815    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
6816        switch (keyCode) {
6817        case KeyEvent.KEYCODE_A:
6818            if (canSelectAll()) {
6819                return onTextContextMenuItem(ID_SELECT_ALL);
6820            }
6821
6822            break;
6823
6824        case KeyEvent.KEYCODE_X:
6825            if (canCut()) {
6826                return onTextContextMenuItem(ID_CUT);
6827            }
6828
6829            break;
6830
6831        case KeyEvent.KEYCODE_C:
6832            if (canCopy()) {
6833                return onTextContextMenuItem(ID_COPY);
6834            }
6835
6836            break;
6837
6838        case KeyEvent.KEYCODE_V:
6839            if (canPaste()) {
6840                return onTextContextMenuItem(ID_PASTE);
6841            }
6842
6843            break;
6844        }
6845
6846        return super.onKeyShortcut(keyCode, event);
6847    }
6848
6849    private boolean canSelectAll() {
6850        if (mText instanceof Spannable && mText.length() != 0 &&
6851            mMovement != null && mMovement.canSelectArbitrarily()) {
6852            return true;
6853        }
6854
6855        return false;
6856    }
6857
6858    private boolean canSelectText() {
6859        if (mText instanceof Spannable && mText.length() != 0 &&
6860            mMovement != null && mMovement.canSelectArbitrarily()) {
6861            return true;
6862        }
6863
6864        return false;
6865    }
6866
6867    private boolean canCut() {
6868        if (mTransformation instanceof PasswordTransformationMethod) {
6869            return false;
6870        }
6871
6872        if (mText.length() > 0 && getSelectionStart() >= 0) {
6873            if (mText instanceof Editable && mInput != null) {
6874                return true;
6875            }
6876        }
6877
6878        return false;
6879    }
6880
6881    private boolean canCopy() {
6882        if (mTransformation instanceof PasswordTransformationMethod) {
6883            return false;
6884        }
6885
6886        if (mText.length() > 0 && getSelectionStart() >= 0) {
6887            return true;
6888        }
6889
6890        return false;
6891    }
6892
6893    private boolean canPaste() {
6894        if (mText instanceof Editable && mInput != null &&
6895            getSelectionStart() >= 0 && getSelectionEnd() >= 0) {
6896            ClipboardManager clip = (ClipboardManager)getContext()
6897                    .getSystemService(Context.CLIPBOARD_SERVICE);
6898            if (clip.hasText()) {
6899                return true;
6900            }
6901        }
6902
6903        return false;
6904    }
6905
6906    /**
6907     * Returns a word to add to the dictionary from the context menu,
6908     * or null if there is no cursor or no word at the cursor.
6909     */
6910    private String getWordForDictionary() {
6911        /*
6912         * Quick return if the input type is one where adding words
6913         * to the dictionary doesn't make any sense.
6914         */
6915        int klass = mInputType & InputType.TYPE_MASK_CLASS;
6916        if (klass == InputType.TYPE_CLASS_NUMBER ||
6917            klass == InputType.TYPE_CLASS_PHONE ||
6918            klass == InputType.TYPE_CLASS_DATETIME) {
6919            return null;
6920        }
6921
6922        int variation = mInputType & InputType.TYPE_MASK_VARIATION;
6923        if (variation == InputType.TYPE_TEXT_VARIATION_URI ||
6924            variation == InputType.TYPE_TEXT_VARIATION_PASSWORD ||
6925            variation == InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD ||
6926            variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS ||
6927            variation == InputType.TYPE_TEXT_VARIATION_FILTER) {
6928            return null;
6929        }
6930
6931        int end = getSelectionEnd();
6932
6933        if (end < 0) {
6934            return null;
6935        }
6936
6937        int start = end;
6938        int len = mText.length();
6939
6940        for (; start > 0; start--) {
6941            char c = mTransformed.charAt(start - 1);
6942            int type = Character.getType(c);
6943
6944            if (c != '\'' &&
6945                type != Character.UPPERCASE_LETTER &&
6946                type != Character.LOWERCASE_LETTER &&
6947                type != Character.TITLECASE_LETTER &&
6948                type != Character.MODIFIER_LETTER &&
6949                type != Character.DECIMAL_DIGIT_NUMBER) {
6950                break;
6951            }
6952        }
6953
6954        for (; end < len; end++) {
6955            char c = mTransformed.charAt(end);
6956            int type = Character.getType(c);
6957
6958            if (c != '\'' &&
6959                type != Character.UPPERCASE_LETTER &&
6960                type != Character.LOWERCASE_LETTER &&
6961                type != Character.TITLECASE_LETTER &&
6962                type != Character.MODIFIER_LETTER &&
6963                type != Character.DECIMAL_DIGIT_NUMBER) {
6964                break;
6965            }
6966        }
6967
6968        boolean hasLetter = false;
6969        for (int i = start; i < end; i++) {
6970            if (Character.isLetter(mTransformed.charAt(i))) {
6971                hasLetter = true;
6972                break;
6973            }
6974        }
6975        if (!hasLetter) {
6976            return null;
6977        }
6978
6979        if (start == end) {
6980            return null;
6981        }
6982
6983        if (end - start > 48) {
6984            return null;
6985        }
6986
6987        return TextUtils.substring(mTransformed, start, end);
6988    }
6989
6990    @Override
6991    public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
6992        final boolean isPassword = isPasswordInputType(mInputType);
6993
6994        if (!isPassword) {
6995            CharSequence text = getText();
6996            if (TextUtils.isEmpty(text)) {
6997                text = getHint();
6998            }
6999            if (!TextUtils.isEmpty(text)) {
7000                if (text.length() > AccessibilityEvent.MAX_TEXT_LENGTH) {
7001                    text = text.subSequence(0, AccessibilityEvent.MAX_TEXT_LENGTH + 1);
7002                }
7003                event.getText().add(text);
7004            }
7005        } else {
7006            event.setPassword(isPassword);
7007        }
7008        return false;
7009    }
7010
7011    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
7012            int fromIndex, int removedCount, int addedCount) {
7013        AccessibilityEvent event =
7014            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
7015        event.setFromIndex(fromIndex);
7016        event.setRemovedCount(removedCount);
7017        event.setAddedCount(addedCount);
7018        event.setBeforeText(beforeText);
7019        sendAccessibilityEventUnchecked(event);
7020    }
7021
7022    @Override
7023    protected void onCreateContextMenu(ContextMenu menu) {
7024        super.onCreateContextMenu(menu);
7025        boolean added = false;
7026
7027        if (!isFocused()) {
7028            if (isFocusable() && mInput != null) {
7029                if (canCopy()) {
7030                    MenuHandler handler = new MenuHandler();
7031                    int name = com.android.internal.R.string.copyAll;
7032
7033                    menu.add(0, ID_COPY, 0, name).
7034                        setOnMenuItemClickListener(handler).
7035                        setAlphabeticShortcut('c');
7036                    menu.setHeaderTitle(com.android.internal.R.string.
7037                        editTextMenuTitle);
7038                }
7039            }
7040
7041            return;
7042        }
7043
7044        MenuHandler handler = new MenuHandler();
7045
7046        if (canSelectAll()) {
7047            menu.add(0, ID_SELECT_ALL, 0,
7048                    com.android.internal.R.string.selectAll).
7049                setOnMenuItemClickListener(handler).
7050                setAlphabeticShortcut('a');
7051            added = true;
7052        }
7053
7054        boolean selection = getSelectionStart() != getSelectionEnd();
7055
7056        if (canSelectText()) {
7057            if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) {
7058                menu.add(0, ID_STOP_SELECTING_TEXT, 0,
7059                        com.android.internal.R.string.stopSelectingText).
7060                    setOnMenuItemClickListener(handler);
7061                added = true;
7062            } else {
7063                menu.add(0, ID_START_SELECTING_TEXT, 0,
7064                        com.android.internal.R.string.selectText).
7065                    setOnMenuItemClickListener(handler);
7066                added = true;
7067            }
7068        }
7069
7070        if (canCut()) {
7071            int name;
7072            if (selection) {
7073                name = com.android.internal.R.string.cut;
7074            } else {
7075                name = com.android.internal.R.string.cutAll;
7076            }
7077
7078            menu.add(0, ID_CUT, 0, name).
7079                setOnMenuItemClickListener(handler).
7080                setAlphabeticShortcut('x');
7081            added = true;
7082        }
7083
7084        if (canCopy()) {
7085            int name;
7086            if (selection) {
7087                name = com.android.internal.R.string.copy;
7088            } else {
7089                name = com.android.internal.R.string.copyAll;
7090            }
7091
7092            menu.add(0, ID_COPY, 0, name).
7093                setOnMenuItemClickListener(handler).
7094                setAlphabeticShortcut('c');
7095            added = true;
7096        }
7097
7098        if (canPaste()) {
7099            menu.add(0, ID_PASTE, 0, com.android.internal.R.string.paste).
7100                    setOnMenuItemClickListener(handler).
7101                    setAlphabeticShortcut('v');
7102            added = true;
7103        }
7104
7105        if (mText instanceof Spanned) {
7106            int selStart = getSelectionStart();
7107            int selEnd = getSelectionEnd();
7108
7109            int min = Math.min(selStart, selEnd);
7110            int max = Math.max(selStart, selEnd);
7111
7112            URLSpan[] urls = ((Spanned) mText).getSpans(min, max,
7113                                                        URLSpan.class);
7114            if (urls.length == 1) {
7115                menu.add(0, ID_COPY_URL, 0,
7116                         com.android.internal.R.string.copyUrl).
7117                            setOnMenuItemClickListener(handler);
7118                added = true;
7119            }
7120        }
7121
7122        if (isInputMethodTarget()) {
7123            menu.add(1, ID_SWITCH_INPUT_METHOD, 0, com.android.internal.R.string.inputMethod).
7124                    setOnMenuItemClickListener(handler);
7125            added = true;
7126        }
7127
7128        String word = getWordForDictionary();
7129        if (word != null) {
7130            menu.add(1, ID_ADD_TO_DICTIONARY, 0,
7131                     getContext().getString(com.android.internal.R.string.addToDictionary, word)).
7132                    setOnMenuItemClickListener(handler);
7133            added = true;
7134
7135        }
7136
7137        if (added) {
7138            menu.setHeaderTitle(com.android.internal.R.string.editTextMenuTitle);
7139        }
7140    }
7141
7142    /**
7143     * Returns whether this text view is a current input method target.  The
7144     * default implementation just checks with {@link InputMethodManager}.
7145     */
7146    public boolean isInputMethodTarget() {
7147        InputMethodManager imm = InputMethodManager.peekInstance();
7148        return imm != null && imm.isActive(this);
7149    }
7150
7151    private static final int ID_SELECT_ALL = android.R.id.selectAll;
7152    private static final int ID_START_SELECTING_TEXT = android.R.id.startSelectingText;
7153    private static final int ID_STOP_SELECTING_TEXT = android.R.id.stopSelectingText;
7154    private static final int ID_CUT = android.R.id.cut;
7155    private static final int ID_COPY = android.R.id.copy;
7156    private static final int ID_PASTE = android.R.id.paste;
7157    private static final int ID_COPY_URL = android.R.id.copyUrl;
7158    private static final int ID_SWITCH_INPUT_METHOD = android.R.id.switchInputMethod;
7159    private static final int ID_ADD_TO_DICTIONARY = android.R.id.addToDictionary;
7160
7161    private class MenuHandler implements MenuItem.OnMenuItemClickListener {
7162        public boolean onMenuItemClick(MenuItem item) {
7163            return onTextContextMenuItem(item.getItemId());
7164        }
7165    }
7166
7167    /**
7168     * Called when a context menu option for the text view is selected.  Currently
7169     * this will be one of: {@link android.R.id#selectAll},
7170     * {@link android.R.id#startSelectingText}, {@link android.R.id#stopSelectingText},
7171     * {@link android.R.id#cut}, {@link android.R.id#copy},
7172     * {@link android.R.id#paste}, {@link android.R.id#copyUrl},
7173     * or {@link android.R.id#switchInputMethod}.
7174     */
7175    public boolean onTextContextMenuItem(int id) {
7176        int selStart = getSelectionStart();
7177        int selEnd = getSelectionEnd();
7178
7179        if (!isFocused()) {
7180            selStart = 0;
7181            selEnd = mText.length();
7182        }
7183
7184        int min = Math.min(selStart, selEnd);
7185        int max = Math.max(selStart, selEnd);
7186
7187        if (min < 0) {
7188            min = 0;
7189        }
7190        if (max < 0) {
7191            max = 0;
7192        }
7193
7194        ClipboardManager clip = (ClipboardManager)getContext()
7195                .getSystemService(Context.CLIPBOARD_SERVICE);
7196
7197        switch (id) {
7198            case ID_SELECT_ALL:
7199                Selection.setSelection((Spannable) mText, 0,
7200                        mText.length());
7201                return true;
7202
7203            case ID_START_SELECTING_TEXT:
7204                MetaKeyKeyListener.startSelecting(this, (Spannable) mText);
7205                return true;
7206
7207            case ID_STOP_SELECTING_TEXT:
7208                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7209                Selection.setSelection((Spannable) mText, getSelectionEnd());
7210                return true;
7211
7212            case ID_CUT:
7213                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7214
7215                if (min == max) {
7216                    min = 0;
7217                    max = mText.length();
7218                }
7219
7220                clip.setText(mTransformed.subSequence(min, max));
7221                ((Editable) mText).delete(min, max);
7222                return true;
7223
7224            case ID_COPY:
7225                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7226
7227                if (min == max) {
7228                    min = 0;
7229                    max = mText.length();
7230                }
7231
7232                clip.setText(mTransformed.subSequence(min, max));
7233                return true;
7234
7235            case ID_PASTE:
7236                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7237
7238                CharSequence paste = clip.getText();
7239
7240                if (paste != null) {
7241                    Selection.setSelection((Spannable) mText, max);
7242                    ((Editable) mText).replace(min, max, paste);
7243                }
7244
7245                return true;
7246
7247            case ID_COPY_URL:
7248                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7249
7250                URLSpan[] urls = ((Spanned) mText).getSpans(min, max,
7251                                                       URLSpan.class);
7252                if (urls.length == 1) {
7253                    clip.setText(urls[0].getURL());
7254                }
7255
7256                return true;
7257
7258            case ID_SWITCH_INPUT_METHOD:
7259                InputMethodManager imm = InputMethodManager.peekInstance();
7260                if (imm != null) {
7261                    imm.showInputMethodPicker();
7262                }
7263                return true;
7264
7265            case ID_ADD_TO_DICTIONARY:
7266                String word = getWordForDictionary();
7267
7268                if (word != null) {
7269                    Intent i = new Intent("com.android.settings.USER_DICTIONARY_INSERT");
7270                    i.putExtra("word", word);
7271                    i.setFlags(i.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK);
7272                    getContext().startActivity(i);
7273                }
7274
7275                return true;
7276            }
7277
7278        return false;
7279    }
7280
7281    public boolean performLongClick() {
7282        if (super.performLongClick()) {
7283            mEatTouchRelease = true;
7284            return true;
7285        }
7286
7287        return false;
7288    }
7289
7290    @ViewDebug.ExportedProperty
7291    private CharSequence            mText;
7292    private CharSequence            mTransformed;
7293    private BufferType              mBufferType = BufferType.NORMAL;
7294
7295    private int                     mInputType = EditorInfo.TYPE_NULL;
7296    private CharSequence            mHint;
7297    private Layout                  mHintLayout;
7298
7299    private KeyListener             mInput;
7300
7301    private MovementMethod          mMovement;
7302    private TransformationMethod    mTransformation;
7303    private ChangeWatcher           mChangeWatcher;
7304
7305    private ArrayList<TextWatcher>  mListeners = null;
7306
7307    // display attributes
7308    private TextPaint               mTextPaint;
7309    private boolean                 mUserSetTextScaleX;
7310    private Paint                   mHighlightPaint;
7311    private int                     mHighlightColor = 0xFFBBDDFF;
7312    private Layout                  mLayout;
7313
7314    private long                    mShowCursor;
7315    private Blink                   mBlink;
7316    private boolean                 mCursorVisible = true;
7317
7318    private boolean                 mSelectAllOnFocus = false;
7319
7320    private int                     mGravity = Gravity.TOP | Gravity.LEFT;
7321    private boolean                 mHorizontallyScrolling;
7322
7323    private int                     mAutoLinkMask;
7324    private boolean                 mLinksClickable = true;
7325
7326    private float                   mSpacingMult = 1;
7327    private float                   mSpacingAdd = 0;
7328
7329    private static final int        LINES = 1;
7330    private static final int        EMS = LINES;
7331    private static final int        PIXELS = 2;
7332
7333    private int                     mMaximum = Integer.MAX_VALUE;
7334    private int                     mMaxMode = LINES;
7335    private int                     mMinimum = 0;
7336    private int                     mMinMode = LINES;
7337
7338    private int                     mMaxWidth = Integer.MAX_VALUE;
7339    private int                     mMaxWidthMode = PIXELS;
7340    private int                     mMinWidth = 0;
7341    private int                     mMinWidthMode = PIXELS;
7342
7343    private boolean                 mSingleLine;
7344    private int                     mDesiredHeightAtMeasure = -1;
7345    private boolean                 mIncludePad = true;
7346
7347    // tmp primitives, so we don't alloc them on each draw
7348    private Path                    mHighlightPath;
7349    private boolean                 mHighlightPathBogus = true;
7350    private static final RectF      sTempRect = new RectF();
7351
7352    // XXX should be much larger
7353    private static final int        VERY_WIDE = 16384;
7354
7355    private static final int        BLINK = 500;
7356
7357    private static final int ANIMATED_SCROLL_GAP = 250;
7358    private long mLastScroll;
7359    private Scroller mScroller = null;
7360
7361    private BoringLayout.Metrics mBoring;
7362    private BoringLayout.Metrics mHintBoring;
7363
7364    private BoringLayout mSavedLayout, mSavedHintLayout;
7365
7366    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
7367    private InputFilter[] mFilters = NO_FILTERS;
7368    private static final Spanned EMPTY_SPANNED = new SpannedString("");
7369}
7370