TextView.java revision b7463eb0c739d3d28c96c644f98f7f685027b62e 
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
202    private boolean mEatTouchRelease = false;
203    private boolean mScrolled = false;
204
205    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
206    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
207
208    private float mShadowRadius, mShadowDx, mShadowDy;
209
210    private static final int PREDRAW_NOT_REGISTERED = 0;
211    private static final int PREDRAW_PENDING = 1;
212    private static final int PREDRAW_DONE = 2;
213    private int mPreDrawState = PREDRAW_NOT_REGISTERED;
214
215    private TextUtils.TruncateAt mEllipsize = null;
216
217    // Enum for the "typeface" XML parameter.
218    // TODO: How can we get this from the XML instead of hardcoding it here?
219    private static final int SANS = 1;
220    private static final int SERIF = 2;
221    private static final int MONOSPACE = 3;
222
223    // Bitfield for the "numeric" XML parameter.
224    // TODO: How can we get this from the XML instead of hardcoding it here?
225    private static final int SIGNED = 2;
226    private static final int DECIMAL = 4;
227
228    class Drawables {
229        final Rect mCompoundRect = new Rect();
230        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight;
231        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight;
232        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight;
233        int mDrawablePadding;
234    }
235    private Drawables mDrawables;
236
237    private CharSequence mError;
238    private boolean mErrorWasChanged;
239    private ErrorPopup mPopup;
240    /**
241     * This flag is set if the TextView tries to display an error before it
242     * is attached to the window (so its position is still unknown).
243     * It causes the error to be shown later, when onAttachedToWindow()
244     * is called.
245     */
246    private boolean mShowErrorAfterAttach;
247
248    private CharWrapper mCharWrapper = null;
249
250    private boolean mSelectionMoved = false;
251    private boolean mTouchFocusSelected = false;
252
253    private Marquee mMarquee;
254    private boolean mRestartMarquee;
255
256    private int mMarqueeRepeatLimit = 3;
257
258    class InputContentType {
259        int imeOptions = EditorInfo.IME_NULL;
260        String privateImeOptions;
261        CharSequence imeActionLabel;
262        int imeActionId;
263        Bundle extras;
264        OnEditorActionListener onEditorActionListener;
265        boolean enterDown;
266    }
267    InputContentType mInputContentType;
268
269    class InputMethodState {
270        Rect mCursorRectInWindow = new Rect();
271        RectF mTmpRectF = new RectF();
272        float[] mTmpOffset = new float[2];
273        ExtractedTextRequest mExtracting;
274        final ExtractedText mTmpExtracted = new ExtractedText();
275        int mBatchEditNesting;
276        boolean mCursorChanged;
277        boolean mSelectionModeChanged;
278        boolean mContentChanged;
279        int mChangedStart, mChangedEnd, mChangedDelta;
280    }
281    InputMethodState mInputMethodState;
282
283    /*
284     * Kick-start the font cache for the zygote process (to pay the cost of
285     * initializing freetype for our default font only once).
286     */
287    static {
288        Paint p = new Paint();
289        p.setAntiAlias(true);
290        // We don't care about the result, just the side-effect of measuring.
291        p.measureText("H");
292    }
293
294    /**
295     * Interface definition for a callback to be invoked when an action is
296     * performed on the editor.
297     */
298    public interface OnEditorActionListener {
299        /**
300         * Called when an action is being performed.
301         *
302         * @param v The view that was clicked.
303         * @param actionId Identifier of the action.  This will be either the
304         * identifier you supplied, or {@link EditorInfo#IME_NULL
305         * EditorInfo.IME_NULL} if being called due to the enter key
306         * being pressed.
307         * @param event If triggered by an enter key, this is the event;
308         * otherwise, this is null.
309         * @return Return true if you have consumed the action, else false.
310         */
311        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
312    }
313
314    public TextView(Context context) {
315        this(context, null);
316    }
317
318    public TextView(Context context,
319                    AttributeSet attrs) {
320        this(context, attrs, com.android.internal.R.attr.textViewStyle);
321    }
322
323    public TextView(Context context,
324                    AttributeSet attrs,
325                    int defStyle) {
326        super(context, attrs, defStyle);
327        mText = "";
328
329        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
330        mTextPaint.density = getResources().getDisplayMetrics().density;
331        mTextPaint.setCompatibilityScaling(
332                getResources().getCompatibilityInfo().applicationScale);
333
334        // If we get the paint from the skin, we should set it to left, since
335        // the layout always wants it to be left.
336        // mTextPaint.setTextAlign(Paint.Align.LEFT);
337
338        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
339        mHighlightPaint.setCompatibilityScaling(
340                getResources().getCompatibilityInfo().applicationScale);
341
342        mMovement = getDefaultMovementMethod();
343        mTransformation = null;
344
345        TypedArray a =
346            context.obtainStyledAttributes(
347                attrs, com.android.internal.R.styleable.TextView, defStyle, 0);
348
349        int textColorHighlight = 0;
350        ColorStateList textColor = null;
351        ColorStateList textColorHint = null;
352        ColorStateList textColorLink = null;
353        int textSize = 15;
354        int typefaceIndex = -1;
355        int styleIndex = -1;
356
357        /*
358         * Look the appearance up without checking first if it exists because
359         * almost every TextView has one and it greatly simplifies the logic
360         * to be able to parse the appearance first and then let specific tags
361         * for this View override it.
362         */
363        TypedArray appearance = null;
364        int ap = a.getResourceId(com.android.internal.R.styleable.TextView_textAppearance, -1);
365        if (ap != -1) {
366            appearance = context.obtainStyledAttributes(ap,
367                                com.android.internal.R.styleable.
368                                TextAppearance);
369        }
370        if (appearance != null) {
371            int n = appearance.getIndexCount();
372            for (int i = 0; i < n; i++) {
373                int attr = appearance.getIndex(i);
374
375                switch (attr) {
376                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
377                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
378                    break;
379
380                case com.android.internal.R.styleable.TextAppearance_textColor:
381                    textColor = appearance.getColorStateList(attr);
382                    break;
383
384                case com.android.internal.R.styleable.TextAppearance_textColorHint:
385                    textColorHint = appearance.getColorStateList(attr);
386                    break;
387
388                case com.android.internal.R.styleable.TextAppearance_textColorLink:
389                    textColorLink = appearance.getColorStateList(attr);
390                    break;
391
392                case com.android.internal.R.styleable.TextAppearance_textSize:
393                    textSize = appearance.getDimensionPixelSize(attr, textSize);
394                    break;
395
396                case com.android.internal.R.styleable.TextAppearance_typeface:
397                    typefaceIndex = appearance.getInt(attr, -1);
398                    break;
399
400                case com.android.internal.R.styleable.TextAppearance_textStyle:
401                    styleIndex = appearance.getInt(attr, -1);
402                    break;
403                }
404            }
405
406            appearance.recycle();
407        }
408
409        boolean editable = getDefaultEditable();
410        CharSequence inputMethod = null;
411        int numeric = 0;
412        CharSequence digits = null;
413        boolean phone = false;
414        boolean autotext = false;
415        int autocap = -1;
416        int buffertype = 0;
417        boolean selectallonfocus = false;
418        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
419            drawableBottom = null;
420        int drawablePadding = 0;
421        int ellipsize = -1;
422        boolean singleLine = false;
423        int maxlength = -1;
424        CharSequence text = "";
425        CharSequence hint = null;
426        int shadowcolor = 0;
427        float dx = 0, dy = 0, r = 0;
428        boolean password = false;
429        int inputType = EditorInfo.TYPE_NULL;
430
431        int n = a.getIndexCount();
432        for (int i = 0; i < n; i++) {
433            int attr = a.getIndex(i);
434
435            switch (attr) {
436            case com.android.internal.R.styleable.TextView_editable:
437                editable = a.getBoolean(attr, editable);
438                break;
439
440            case com.android.internal.R.styleable.TextView_inputMethod:
441                inputMethod = a.getText(attr);
442                break;
443
444            case com.android.internal.R.styleable.TextView_numeric:
445                numeric = a.getInt(attr, numeric);
446                break;
447
448            case com.android.internal.R.styleable.TextView_digits:
449                digits = a.getText(attr);
450                break;
451
452            case com.android.internal.R.styleable.TextView_phoneNumber:
453                phone = a.getBoolean(attr, phone);
454                break;
455
456            case com.android.internal.R.styleable.TextView_autoText:
457                autotext = a.getBoolean(attr, autotext);
458                break;
459
460            case com.android.internal.R.styleable.TextView_capitalize:
461                autocap = a.getInt(attr, autocap);
462                break;
463
464            case com.android.internal.R.styleable.TextView_bufferType:
465                buffertype = a.getInt(attr, buffertype);
466                break;
467
468            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
469                selectallonfocus = a.getBoolean(attr, selectallonfocus);
470                break;
471
472            case com.android.internal.R.styleable.TextView_autoLink:
473                mAutoLinkMask = a.getInt(attr, 0);
474                break;
475
476            case com.android.internal.R.styleable.TextView_linksClickable:
477                mLinksClickable = a.getBoolean(attr, true);
478                break;
479
480            case com.android.internal.R.styleable.TextView_drawableLeft:
481                drawableLeft = a.getDrawable(attr);
482                break;
483
484            case com.android.internal.R.styleable.TextView_drawableTop:
485                drawableTop = a.getDrawable(attr);
486                break;
487
488            case com.android.internal.R.styleable.TextView_drawableRight:
489                drawableRight = a.getDrawable(attr);
490                break;
491
492            case com.android.internal.R.styleable.TextView_drawableBottom:
493                drawableBottom = a.getDrawable(attr);
494                break;
495
496            case com.android.internal.R.styleable.TextView_drawablePadding:
497                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
498                break;
499
500            case com.android.internal.R.styleable.TextView_maxLines:
501                setMaxLines(a.getInt(attr, -1));
502                break;
503
504            case com.android.internal.R.styleable.TextView_maxHeight:
505                setMaxHeight(a.getDimensionPixelSize(attr, -1));
506                break;
507
508            case com.android.internal.R.styleable.TextView_lines:
509                setLines(a.getInt(attr, -1));
510                break;
511
512            case com.android.internal.R.styleable.TextView_height:
513                setHeight(a.getDimensionPixelSize(attr, -1));
514                break;
515
516            case com.android.internal.R.styleable.TextView_minLines:
517                setMinLines(a.getInt(attr, -1));
518                break;
519
520            case com.android.internal.R.styleable.TextView_minHeight:
521                setMinHeight(a.getDimensionPixelSize(attr, -1));
522                break;
523
524            case com.android.internal.R.styleable.TextView_maxEms:
525                setMaxEms(a.getInt(attr, -1));
526                break;
527
528            case com.android.internal.R.styleable.TextView_maxWidth:
529                setMaxWidth(a.getDimensionPixelSize(attr, -1));
530                break;
531
532            case com.android.internal.R.styleable.TextView_ems:
533                setEms(a.getInt(attr, -1));
534                break;
535
536            case com.android.internal.R.styleable.TextView_width:
537                setWidth(a.getDimensionPixelSize(attr, -1));
538                break;
539
540            case com.android.internal.R.styleable.TextView_minEms:
541                setMinEms(a.getInt(attr, -1));
542                break;
543
544            case com.android.internal.R.styleable.TextView_minWidth:
545                setMinWidth(a.getDimensionPixelSize(attr, -1));
546                break;
547
548            case com.android.internal.R.styleable.TextView_gravity:
549                setGravity(a.getInt(attr, -1));
550                break;
551
552            case com.android.internal.R.styleable.TextView_hint:
553                hint = a.getText(attr);
554                break;
555
556            case com.android.internal.R.styleable.TextView_text:
557                text = a.getText(attr);
558                break;
559
560            case com.android.internal.R.styleable.TextView_scrollHorizontally:
561                if (a.getBoolean(attr, false)) {
562                    setHorizontallyScrolling(true);
563                }
564                break;
565
566            case com.android.internal.R.styleable.TextView_singleLine:
567                singleLine = a.getBoolean(attr, singleLine);
568                break;
569
570            case com.android.internal.R.styleable.TextView_ellipsize:
571                ellipsize = a.getInt(attr, ellipsize);
572                break;
573
574            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
575                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
576                break;
577
578            case com.android.internal.R.styleable.TextView_includeFontPadding:
579                if (!a.getBoolean(attr, true)) {
580                    setIncludeFontPadding(false);
581                }
582                break;
583
584            case com.android.internal.R.styleable.TextView_cursorVisible:
585                if (!a.getBoolean(attr, true)) {
586                    setCursorVisible(false);
587                }
588                break;
589
590            case com.android.internal.R.styleable.TextView_maxLength:
591                maxlength = a.getInt(attr, -1);
592                break;
593
594            case com.android.internal.R.styleable.TextView_textScaleX:
595                setTextScaleX(a.getFloat(attr, 1.0f));
596                break;
597
598            case com.android.internal.R.styleable.TextView_freezesText:
599                mFreezesText = a.getBoolean(attr, false);
600                break;
601
602            case com.android.internal.R.styleable.TextView_shadowColor:
603                shadowcolor = a.getInt(attr, 0);
604                break;
605
606            case com.android.internal.R.styleable.TextView_shadowDx:
607                dx = a.getFloat(attr, 0);
608                break;
609
610            case com.android.internal.R.styleable.TextView_shadowDy:
611                dy = a.getFloat(attr, 0);
612                break;
613
614            case com.android.internal.R.styleable.TextView_shadowRadius:
615                r = a.getFloat(attr, 0);
616                break;
617
618            case com.android.internal.R.styleable.TextView_enabled:
619                setEnabled(a.getBoolean(attr, isEnabled()));
620                break;
621
622            case com.android.internal.R.styleable.TextView_textColorHighlight:
623                textColorHighlight = a.getColor(attr, textColorHighlight);
624                break;
625
626            case com.android.internal.R.styleable.TextView_textColor:
627                textColor = a.getColorStateList(attr);
628                break;
629
630            case com.android.internal.R.styleable.TextView_textColorHint:
631                textColorHint = a.getColorStateList(attr);
632                break;
633
634            case com.android.internal.R.styleable.TextView_textColorLink:
635                textColorLink = a.getColorStateList(attr);
636                break;
637
638            case com.android.internal.R.styleable.TextView_textSize:
639                textSize = a.getDimensionPixelSize(attr, textSize);
640                break;
641
642            case com.android.internal.R.styleable.TextView_typeface:
643                typefaceIndex = a.getInt(attr, typefaceIndex);
644                break;
645
646            case com.android.internal.R.styleable.TextView_textStyle:
647                styleIndex = a.getInt(attr, styleIndex);
648                break;
649
650            case com.android.internal.R.styleable.TextView_password:
651                password = a.getBoolean(attr, password);
652                break;
653
654            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
655                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
656                break;
657
658            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
659                mSpacingMult = a.getFloat(attr, mSpacingMult);
660                break;
661
662            case com.android.internal.R.styleable.TextView_inputType:
663                inputType = a.getInt(attr, mInputType);
664                break;
665
666            case com.android.internal.R.styleable.TextView_imeOptions:
667                if (mInputContentType == null) {
668                    mInputContentType = new InputContentType();
669                }
670                mInputContentType.imeOptions = a.getInt(attr,
671                        mInputContentType.imeOptions);
672                break;
673
674            case com.android.internal.R.styleable.TextView_imeActionLabel:
675                if (mInputContentType == null) {
676                    mInputContentType = new InputContentType();
677                }
678                mInputContentType.imeActionLabel = a.getText(attr);
679                break;
680
681            case com.android.internal.R.styleable.TextView_imeActionId:
682                if (mInputContentType == null) {
683                    mInputContentType = new InputContentType();
684                }
685                mInputContentType.imeActionId = a.getInt(attr,
686                        mInputContentType.imeActionId);
687                break;
688
689            case com.android.internal.R.styleable.TextView_privateImeOptions:
690                setPrivateImeOptions(a.getString(attr));
691                break;
692
693            case com.android.internal.R.styleable.TextView_editorExtras:
694                try {
695                    setInputExtras(a.getResourceId(attr, 0));
696                } catch (XmlPullParserException e) {
697                    Log.w("TextView", "Failure reading input extras", e);
698                } catch (IOException e) {
699                    Log.w("TextView", "Failure reading input extras", e);
700                }
701                break;
702            }
703        }
704        a.recycle();
705
706        BufferType bufferType = BufferType.EDITABLE;
707
708        if ((inputType&(EditorInfo.TYPE_MASK_CLASS
709                |EditorInfo.TYPE_MASK_VARIATION))
710                == (EditorInfo.TYPE_CLASS_TEXT
711                        |EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
712            password = true;
713        }
714
715        if (inputMethod != null) {
716            Class c;
717
718            try {
719                c = Class.forName(inputMethod.toString());
720            } catch (ClassNotFoundException ex) {
721                throw new RuntimeException(ex);
722            }
723
724            try {
725                mInput = (KeyListener) c.newInstance();
726            } catch (InstantiationException ex) {
727                throw new RuntimeException(ex);
728            } catch (IllegalAccessException ex) {
729                throw new RuntimeException(ex);
730            }
731            try {
732                mInputType = inputType != EditorInfo.TYPE_NULL
733                        ? inputType
734                        : mInput.getInputType();
735            } catch (IncompatibleClassChangeError e) {
736                mInputType = EditorInfo.TYPE_CLASS_TEXT;
737            }
738        } else if (digits != null) {
739            mInput = DigitsKeyListener.getInstance(digits.toString());
740            // If no input type was specified, we will default to generic
741            // text, since we can't tell the IME about the set of digits
742            // that was selected.
743            mInputType = inputType != EditorInfo.TYPE_NULL
744                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
745        } else if (inputType != EditorInfo.TYPE_NULL) {
746            setInputType(inputType, true);
747            singleLine = (inputType&(EditorInfo.TYPE_MASK_CLASS
748                            | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) !=
749                    (EditorInfo.TYPE_CLASS_TEXT
750                            | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
751        } else if (phone) {
752            mInput = DialerKeyListener.getInstance();
753            mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
754        } else if (numeric != 0) {
755            mInput = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
756                                                   (numeric & DECIMAL) != 0);
757            inputType = EditorInfo.TYPE_CLASS_NUMBER;
758            if ((numeric & SIGNED) != 0) {
759                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
760            }
761            if ((numeric & DECIMAL) != 0) {
762                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
763            }
764            mInputType = inputType;
765        } else if (autotext || autocap != -1) {
766            TextKeyListener.Capitalize cap;
767
768            inputType = EditorInfo.TYPE_CLASS_TEXT;
769            if (!singleLine) {
770                inputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
771            }
772
773            switch (autocap) {
774            case 1:
775                cap = TextKeyListener.Capitalize.SENTENCES;
776                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
777                break;
778
779            case 2:
780                cap = TextKeyListener.Capitalize.WORDS;
781                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
782                break;
783
784            case 3:
785                cap = TextKeyListener.Capitalize.CHARACTERS;
786                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
787                break;
788
789            default:
790                cap = TextKeyListener.Capitalize.NONE;
791                break;
792            }
793
794            mInput = TextKeyListener.getInstance(autotext, cap);
795            mInputType = inputType;
796        } else if (editable) {
797            mInput = TextKeyListener.getInstance();
798            mInputType = EditorInfo.TYPE_CLASS_TEXT;
799        } else {
800            mInput = null;
801
802            switch (buffertype) {
803                case 0:
804                    bufferType = BufferType.NORMAL;
805                    break;
806                case 1:
807                    bufferType = BufferType.SPANNABLE;
808                    break;
809                case 2:
810                    bufferType = BufferType.EDITABLE;
811                    break;
812            }
813        }
814
815        if (password && (mInputType&EditorInfo.TYPE_MASK_CLASS)
816                == EditorInfo.TYPE_CLASS_TEXT) {
817            mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
818                | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD;
819        }
820
821        if (selectallonfocus) {
822            mSelectAllOnFocus = true;
823
824            if (bufferType == BufferType.NORMAL)
825                bufferType = BufferType.SPANNABLE;
826        }
827
828        setCompoundDrawablesWithIntrinsicBounds(
829            drawableLeft, drawableTop, drawableRight, drawableBottom);
830        setCompoundDrawablePadding(drawablePadding);
831
832        if (singleLine) {
833            setSingleLine();
834
835            if (mInput == null && ellipsize < 0) {
836                ellipsize = 3; // END
837            }
838        }
839
840        switch (ellipsize) {
841            case 1:
842                setEllipsize(TextUtils.TruncateAt.START);
843                break;
844            case 2:
845                setEllipsize(TextUtils.TruncateAt.MIDDLE);
846                break;
847            case 3:
848                setEllipsize(TextUtils.TruncateAt.END);
849                break;
850            case 4:
851                setHorizontalFadingEdgeEnabled(true);
852                setEllipsize(TextUtils.TruncateAt.MARQUEE);
853                break;
854        }
855
856        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
857        setHintTextColor(textColorHint);
858        setLinkTextColor(textColorLink);
859        if (textColorHighlight != 0) {
860            setHighlightColor(textColorHighlight);
861        }
862        setRawTextSize(textSize);
863
864        if (password) {
865            setTransformationMethod(PasswordTransformationMethod.getInstance());
866            typefaceIndex = MONOSPACE;
867        } else if ((mInputType&(EditorInfo.TYPE_MASK_CLASS
868                |EditorInfo.TYPE_MASK_VARIATION))
869                == (EditorInfo.TYPE_CLASS_TEXT
870                        |EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
871            typefaceIndex = MONOSPACE;
872        }
873
874        setTypefaceByIndex(typefaceIndex, styleIndex);
875
876        if (shadowcolor != 0) {
877            setShadowLayer(r, dx, dy, shadowcolor);
878        }
879
880        if (maxlength >= 0) {
881            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
882        } else {
883            setFilters(NO_FILTERS);
884        }
885
886        setText(text, bufferType);
887        if (hint != null) setHint(hint);
888
889        /*
890         * Views are not normally focusable unless specified to be.
891         * However, TextViews that have input or movement methods *are*
892         * focusable by default.
893         */
894        a = context.obtainStyledAttributes(attrs,
895                                           com.android.internal.R.styleable.View,
896                                           defStyle, 0);
897
898        boolean focusable = mMovement != null || mInput != null;
899        boolean clickable = focusable;
900        boolean longClickable = focusable;
901
902        n = a.getIndexCount();
903        for (int i = 0; i < n; i++) {
904            int attr = a.getIndex(i);
905
906            switch (attr) {
907            case com.android.internal.R.styleable.View_focusable:
908                focusable = a.getBoolean(attr, focusable);
909                break;
910
911            case com.android.internal.R.styleable.View_clickable:
912                clickable = a.getBoolean(attr, clickable);
913                break;
914
915            case com.android.internal.R.styleable.View_longClickable:
916                longClickable = a.getBoolean(attr, longClickable);
917                break;
918            }
919        }
920        a.recycle();
921
922        setFocusable(focusable);
923        setClickable(clickable);
924        setLongClickable(longClickable);
925    }
926
927    private void setTypefaceByIndex(int typefaceIndex, int styleIndex) {
928        Typeface tf = null;
929        switch (typefaceIndex) {
930            case SANS:
931                tf = Typeface.SANS_SERIF;
932                break;
933
934            case SERIF:
935                tf = Typeface.SERIF;
936                break;
937
938            case MONOSPACE:
939                tf = Typeface.MONOSPACE;
940                break;
941        }
942
943        setTypeface(tf, styleIndex);
944    }
945
946    /**
947     * Sets the typeface and style in which the text should be displayed,
948     * and turns on the fake bold and italic bits in the Paint if the
949     * Typeface that you provided does not have all the bits in the
950     * style that you specified.
951     *
952     * @attr ref android.R.styleable#TextView_typeface
953     * @attr ref android.R.styleable#TextView_textStyle
954     */
955    public void setTypeface(Typeface tf, int style) {
956        if (style > 0) {
957            if (tf == null) {
958                tf = Typeface.defaultFromStyle(style);
959            } else {
960                tf = Typeface.create(tf, style);
961            }
962
963            setTypeface(tf);
964            // now compute what (if any) algorithmic styling is needed
965            int typefaceStyle = tf != null ? tf.getStyle() : 0;
966            int need = style & ~typefaceStyle;
967            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
968            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
969        } else {
970            mTextPaint.setFakeBoldText(false);
971            mTextPaint.setTextSkewX(0);
972            setTypeface(tf);
973        }
974    }
975
976    /**
977     * Subclasses override this to specify that they have a KeyListener
978     * by default even if not specifically called for in the XML options.
979     */
980    protected boolean getDefaultEditable() {
981        return false;
982    }
983
984    /**
985     * Subclasses override this to specify a default movement method.
986     */
987    protected MovementMethod getDefaultMovementMethod() {
988        return null;
989    }
990
991    /**
992     * Return the text the TextView is displaying. If setText() was called with
993     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
994     * the return value from this method to Spannable or Editable, respectively.
995     *
996     * Note: The content of the return value should not be modified. If you want
997     * a modifiable one, you should make your own copy first.
998     */
999    @ViewDebug.CapturedViewProperty
1000    public CharSequence getText() {
1001        return mText;
1002    }
1003
1004    /**
1005     * Returns the length, in characters, of the text managed by this TextView
1006     */
1007    public int length() {
1008        return mText.length();
1009    }
1010
1011    /**
1012     * Return the text the TextView is displaying as an Editable object.  If
1013     * the text is not editable, null is returned.
1014     *
1015     * @see #getText
1016     */
1017    public Editable getEditableText() {
1018        return (mText instanceof Editable) ? (Editable)mText : null;
1019    }
1020
1021    /**
1022     * @return the height of one standard line in pixels.  Note that markup
1023     * within the text can cause individual lines to be taller or shorter
1024     * than this height, and the layout may contain additional first-
1025     * or last-line padding.
1026     */
1027    public int getLineHeight() {
1028        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult
1029                          + mSpacingAdd);
1030    }
1031
1032    /**
1033     * @return the Layout that is currently being used to display the text.
1034     * This can be null if the text or width has recently changes.
1035     */
1036    public final Layout getLayout() {
1037        return mLayout;
1038    }
1039
1040    /**
1041     * @return the current key listener for this TextView.
1042     * This will frequently be null for non-EditText TextViews.
1043     */
1044    public final KeyListener getKeyListener() {
1045        return mInput;
1046    }
1047
1048    /**
1049     * Sets the key listener to be used with this TextView.  This can be null
1050     * to disallow user input.  Note that this method has significant and
1051     * subtle interactions with soft keyboards and other input method:
1052     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1053     * for important details.  Calling this method will replace the current
1054     * content type of the text view with the content type returned by the
1055     * key listener.
1056     * <p>
1057     * Be warned that if you want a TextView with a key listener or movement
1058     * method not to be focusable, or if you want a TextView without a
1059     * key listener or movement method to be focusable, you must call
1060     * {@link #setFocusable} again after calling this to get the focusability
1061     * back the way you want it.
1062     *
1063     * @attr ref android.R.styleable#TextView_numeric
1064     * @attr ref android.R.styleable#TextView_digits
1065     * @attr ref android.R.styleable#TextView_phoneNumber
1066     * @attr ref android.R.styleable#TextView_inputMethod
1067     * @attr ref android.R.styleable#TextView_capitalize
1068     * @attr ref android.R.styleable#TextView_autoText
1069     */
1070    public void setKeyListener(KeyListener input) {
1071        setKeyListenerOnly(input);
1072        fixFocusableAndClickableSettings();
1073
1074        if (input != null) {
1075            try {
1076                mInputType = mInput.getInputType();
1077            } catch (IncompatibleClassChangeError e) {
1078                mInputType = EditorInfo.TYPE_CLASS_TEXT;
1079            }
1080            if ((mInputType&EditorInfo.TYPE_MASK_CLASS)
1081                    == EditorInfo.TYPE_CLASS_TEXT) {
1082                if (mSingleLine) {
1083                    mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
1084                } else {
1085                    mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
1086                }
1087            }
1088        } else {
1089            mInputType = EditorInfo.TYPE_NULL;
1090        }
1091
1092        InputMethodManager imm = InputMethodManager.peekInstance();
1093        if (imm != null) imm.restartInput(this);
1094    }
1095
1096    private void setKeyListenerOnly(KeyListener input) {
1097        mInput = input;
1098        if (mInput != null && !(mText instanceof Editable))
1099            setText(mText);
1100
1101        setFilters((Editable) mText, mFilters);
1102    }
1103
1104    /**
1105     * @return the movement method being used for this TextView.
1106     * This will frequently be null for non-EditText TextViews.
1107     */
1108    public final MovementMethod getMovementMethod() {
1109        return mMovement;
1110    }
1111
1112    /**
1113     * Sets the movement method (arrow key handler) to be used for
1114     * this TextView.  This can be null to disallow using the arrow keys
1115     * to move the cursor or scroll the view.
1116     * <p>
1117     * Be warned that if you want a TextView with a key listener or movement
1118     * method not to be focusable, or if you want a TextView without a
1119     * key listener or movement method to be focusable, you must call
1120     * {@link #setFocusable} again after calling this to get the focusability
1121     * back the way you want it.
1122     */
1123    public final void setMovementMethod(MovementMethod movement) {
1124        mMovement = movement;
1125
1126        if (mMovement != null && !(mText instanceof Spannable))
1127            setText(mText);
1128
1129        fixFocusableAndClickableSettings();
1130    }
1131
1132    private void fixFocusableAndClickableSettings() {
1133        if ((mMovement != null) || mInput != null) {
1134            setFocusable(true);
1135            setClickable(true);
1136            setLongClickable(true);
1137        } else {
1138            setFocusable(false);
1139            setClickable(false);
1140            setLongClickable(false);
1141        }
1142    }
1143
1144    /**
1145     * @return the current transformation method for this TextView.
1146     * This will frequently be null except for single-line and password
1147     * fields.
1148     */
1149    public final TransformationMethod getTransformationMethod() {
1150        return mTransformation;
1151    }
1152
1153    /**
1154     * Sets the transformation that is applied to the text that this
1155     * TextView is displaying.
1156     *
1157     * @attr ref android.R.styleable#TextView_password
1158     * @attr ref android.R.styleable#TextView_singleLine
1159     */
1160    public final void setTransformationMethod(TransformationMethod method) {
1161        if (method == mTransformation) {
1162            // Avoid the setText() below if the transformation is
1163            // the same.
1164            return;
1165        }
1166        if (mTransformation != null) {
1167            if (mText instanceof Spannable) {
1168                ((Spannable) mText).removeSpan(mTransformation);
1169            }
1170        }
1171
1172        mTransformation = method;
1173
1174        setText(mText);
1175    }
1176
1177    /**
1178     * Returns the top padding of the view, plus space for the top
1179     * Drawable if any.
1180     */
1181    public int getCompoundPaddingTop() {
1182        final Drawables dr = mDrawables;
1183        if (dr == null || dr.mDrawableTop == null) {
1184            return mPaddingTop;
1185        } else {
1186            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1187        }
1188    }
1189
1190    /**
1191     * Returns the bottom padding of the view, plus space for the bottom
1192     * Drawable if any.
1193     */
1194    public int getCompoundPaddingBottom() {
1195        final Drawables dr = mDrawables;
1196        if (dr == null || dr.mDrawableBottom == null) {
1197            return mPaddingBottom;
1198        } else {
1199            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1200        }
1201    }
1202
1203    /**
1204     * Returns the left padding of the view, plus space for the left
1205     * Drawable if any.
1206     */
1207    public int getCompoundPaddingLeft() {
1208        final Drawables dr = mDrawables;
1209        if (dr == null || dr.mDrawableLeft == null) {
1210            return mPaddingLeft;
1211        } else {
1212            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1213        }
1214    }
1215
1216    /**
1217     * Returns the right padding of the view, plus space for the right
1218     * Drawable if any.
1219     */
1220    public int getCompoundPaddingRight() {
1221        final Drawables dr = mDrawables;
1222        if (dr == null || dr.mDrawableRight == null) {
1223            return mPaddingRight;
1224        } else {
1225            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1226        }
1227    }
1228
1229    /**
1230     * Returns the extended top padding of the view, including both the
1231     * top Drawable if any and any extra space to keep more than maxLines
1232     * of text from showing.  It is only valid to call this after measuring.
1233     */
1234    public int getExtendedPaddingTop() {
1235        if (mMaxMode != LINES) {
1236            return getCompoundPaddingTop();
1237        }
1238
1239        if (mLayout.getLineCount() <= mMaximum) {
1240            return getCompoundPaddingTop();
1241        }
1242
1243        int top = getCompoundPaddingTop();
1244        int bottom = getCompoundPaddingBottom();
1245        int viewht = getHeight() - top - bottom;
1246        int layoutht = mLayout.getLineTop(mMaximum);
1247
1248        if (layoutht >= viewht) {
1249            return top;
1250        }
1251
1252        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1253        if (gravity == Gravity.TOP) {
1254            return top;
1255        } else if (gravity == Gravity.BOTTOM) {
1256            return top + viewht - layoutht;
1257        } else { // (gravity == Gravity.CENTER_VERTICAL)
1258            return top + (viewht - layoutht) / 2;
1259        }
1260    }
1261
1262    /**
1263     * Returns the extended bottom padding of the view, including both the
1264     * bottom Drawable if any and any extra space to keep more than maxLines
1265     * of text from showing.  It is only valid to call this after measuring.
1266     */
1267    public int getExtendedPaddingBottom() {
1268        if (mMaxMode != LINES) {
1269            return getCompoundPaddingBottom();
1270        }
1271
1272        if (mLayout.getLineCount() <= mMaximum) {
1273            return getCompoundPaddingBottom();
1274        }
1275
1276        int top = getCompoundPaddingTop();
1277        int bottom = getCompoundPaddingBottom();
1278        int viewht = getHeight() - top - bottom;
1279        int layoutht = mLayout.getLineTop(mMaximum);
1280
1281        if (layoutht >= viewht) {
1282            return bottom;
1283        }
1284
1285        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1286        if (gravity == Gravity.TOP) {
1287            return bottom + viewht - layoutht;
1288        } else if (gravity == Gravity.BOTTOM) {
1289            return bottom;
1290        } else { // (gravity == Gravity.CENTER_VERTICAL)
1291            return bottom + (viewht - layoutht) / 2;
1292        }
1293    }
1294
1295    /**
1296     * Returns the total left padding of the view, including the left
1297     * Drawable if any.
1298     */
1299    public int getTotalPaddingLeft() {
1300        return getCompoundPaddingLeft();
1301    }
1302
1303    /**
1304     * Returns the total right padding of the view, including the right
1305     * Drawable if any.
1306     */
1307    public int getTotalPaddingRight() {
1308        return getCompoundPaddingRight();
1309    }
1310
1311    /**
1312     * Returns the total top padding of the view, including the top
1313     * Drawable if any, the extra space to keep more than maxLines
1314     * from showing, and the vertical offset for gravity, if any.
1315     */
1316    public int getTotalPaddingTop() {
1317        return getExtendedPaddingTop() + getVerticalOffset(true);
1318    }
1319
1320    /**
1321     * Returns the total bottom padding of the view, including the bottom
1322     * Drawable if any, the extra space to keep more than maxLines
1323     * from showing, and the vertical offset for gravity, if any.
1324     */
1325    public int getTotalPaddingBottom() {
1326        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1327    }
1328
1329    /**
1330     * Sets the Drawables (if any) to appear to the left of, above,
1331     * to the right of, and below the text.  Use null if you do not
1332     * want a Drawable there.  The Drawables must already have had
1333     * {@link Drawable#setBounds} called.
1334     *
1335     * @attr ref android.R.styleable#TextView_drawableLeft
1336     * @attr ref android.R.styleable#TextView_drawableTop
1337     * @attr ref android.R.styleable#TextView_drawableRight
1338     * @attr ref android.R.styleable#TextView_drawableBottom
1339     */
1340    public void setCompoundDrawables(Drawable left, Drawable top,
1341                                     Drawable right, Drawable bottom) {
1342        Drawables dr = mDrawables;
1343
1344        final boolean drawables = left != null || top != null
1345                || right != null || bottom != null;
1346
1347        if (!drawables) {
1348            // Clearing drawables...  can we free the data structure?
1349            if (dr != null) {
1350                if (dr.mDrawablePadding == 0) {
1351                    mDrawables = null;
1352                } else {
1353                    // We need to retain the last set padding, so just clear
1354                    // out all of the fields in the existing structure.
1355                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
1356                    dr.mDrawableLeft = null;
1357                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1358                    dr.mDrawableTop = null;
1359                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
1360                    dr.mDrawableRight = null;
1361                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1362                    dr.mDrawableBottom = null;
1363                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1364                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1365                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1366                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1367                }
1368            }
1369        } else {
1370            if (dr == null) {
1371                mDrawables = dr = new Drawables();
1372            }
1373
1374            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
1375                dr.mDrawableLeft.setCallback(null);
1376            }
1377            dr.mDrawableLeft = left;
1378            if (dr.mDrawableTop != left && dr.mDrawableTop != null) {
1379                dr.mDrawableTop.setCallback(null);
1380            }
1381            dr.mDrawableTop = top;
1382            if (dr.mDrawableRight != left && dr.mDrawableRight != null) {
1383                dr.mDrawableRight.setCallback(null);
1384            }
1385            dr.mDrawableRight = right;
1386            if (dr.mDrawableBottom != left && dr.mDrawableBottom != null) {
1387                dr.mDrawableBottom.setCallback(null);
1388            }
1389            dr.mDrawableBottom = bottom;
1390
1391            final Rect compoundRect = dr.mCompoundRect;
1392            int[] state;
1393
1394            state = getDrawableState();
1395
1396            if (left != null) {
1397                left.setState(state);
1398                left.copyBounds(compoundRect);
1399                left.setCallback(this);
1400                dr.mDrawableSizeLeft = compoundRect.width();
1401                dr.mDrawableHeightLeft = compoundRect.height();
1402            } else {
1403                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1404            }
1405
1406            if (right != null) {
1407                right.setState(state);
1408                right.copyBounds(compoundRect);
1409                right.setCallback(this);
1410                dr.mDrawableSizeRight = compoundRect.width();
1411                dr.mDrawableHeightRight = compoundRect.height();
1412            } else {
1413                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1414            }
1415
1416            if (top != null) {
1417                top.setState(state);
1418                top.copyBounds(compoundRect);
1419                top.setCallback(this);
1420                dr.mDrawableSizeTop = compoundRect.height();
1421                dr.mDrawableWidthTop = compoundRect.width();
1422            } else {
1423                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1424            }
1425
1426            if (bottom != null) {
1427                bottom.setState(state);
1428                bottom.copyBounds(compoundRect);
1429                bottom.setCallback(this);
1430                dr.mDrawableSizeBottom = compoundRect.height();
1431                dr.mDrawableWidthBottom = compoundRect.width();
1432            } else {
1433                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1434            }
1435        }
1436
1437        invalidate();
1438        requestLayout();
1439    }
1440
1441    /**
1442     * Sets the Drawables (if any) to appear to the left of, above,
1443     * to the right of, and below the text.  Use 0 if you do not
1444     * want a Drawable there. The Drawables' bounds will be set to
1445     * their intrinsic bounds.
1446     *
1447     * @param left Resource identifier of the left Drawable.
1448     * @param top Resource identifier of the top Drawable.
1449     * @param right Resource identifier of the right Drawable.
1450     * @param bottom Resource identifier of the bottom Drawable.
1451     *
1452     * @attr ref android.R.styleable#TextView_drawableLeft
1453     * @attr ref android.R.styleable#TextView_drawableTop
1454     * @attr ref android.R.styleable#TextView_drawableRight
1455     * @attr ref android.R.styleable#TextView_drawableBottom
1456     */
1457    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1458        final Resources resources = getContext().getResources();
1459        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null,
1460                top != 0 ? resources.getDrawable(top) : null,
1461                right != 0 ? resources.getDrawable(right) : null,
1462                bottom != 0 ? resources.getDrawable(bottom) : null);
1463    }
1464
1465    /**
1466     * Sets the Drawables (if any) to appear to the left of, above,
1467     * to the right of, and below the text.  Use null if you do not
1468     * want a Drawable there. The Drawables' bounds will be set to
1469     * their intrinsic bounds.
1470     *
1471     * @attr ref android.R.styleable#TextView_drawableLeft
1472     * @attr ref android.R.styleable#TextView_drawableTop
1473     * @attr ref android.R.styleable#TextView_drawableRight
1474     * @attr ref android.R.styleable#TextView_drawableBottom
1475     */
1476    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1477            Drawable right, Drawable bottom) {
1478
1479        if (left != null) {
1480            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1481        }
1482        if (right != null) {
1483            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1484        }
1485        if (top != null) {
1486            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1487        }
1488        if (bottom != null) {
1489            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
1490        }
1491        setCompoundDrawables(left, top, right, bottom);
1492    }
1493
1494    /**
1495     * Returns drawables for the left, top, right, and bottom borders.
1496     */
1497    public Drawable[] getCompoundDrawables() {
1498        final Drawables dr = mDrawables;
1499        if (dr != null) {
1500            return new Drawable[] {
1501                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
1502            };
1503        } else {
1504            return new Drawable[] { null, null, null, null };
1505        }
1506    }
1507
1508    /**
1509     * Sets the size of the padding between the compound drawables and
1510     * the text.
1511     *
1512     * @attr ref android.R.styleable#TextView_drawablePadding
1513     */
1514    public void setCompoundDrawablePadding(int pad) {
1515        Drawables dr = mDrawables;
1516        if (pad == 0) {
1517            if (dr != null) {
1518                dr.mDrawablePadding = pad;
1519            }
1520        } else {
1521            if (dr == null) {
1522                mDrawables = dr = new Drawables();
1523            }
1524            dr.mDrawablePadding = pad;
1525        }
1526
1527        invalidate();
1528        requestLayout();
1529    }
1530
1531    /**
1532     * Returns the padding between the compound drawables and the text.
1533     */
1534    public int getCompoundDrawablePadding() {
1535        final Drawables dr = mDrawables;
1536        return dr != null ? dr.mDrawablePadding : 0;
1537    }
1538
1539    @Override
1540    public void setPadding(int left, int top, int right, int bottom) {
1541        if (left != mPaddingLeft ||
1542            right != mPaddingRight ||
1543            top != mPaddingTop ||
1544            bottom != mPaddingBottom) {
1545            nullLayouts();
1546        }
1547
1548        // the super call will requestLayout()
1549        super.setPadding(left, top, right, bottom);
1550        invalidate();
1551    }
1552
1553    /**
1554     * Gets the autolink mask of the text.  See {@link
1555     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1556     * possible values.
1557     *
1558     * @attr ref android.R.styleable#TextView_autoLink
1559     */
1560    public final int getAutoLinkMask() {
1561        return mAutoLinkMask;
1562    }
1563
1564    /**
1565     * Sets the text color, size, style, hint color, and highlight color
1566     * from the specified TextAppearance resource.
1567     */
1568    public void setTextAppearance(Context context, int resid) {
1569        TypedArray appearance =
1570            context.obtainStyledAttributes(resid,
1571                                           com.android.internal.R.styleable.TextAppearance);
1572
1573        int color;
1574        ColorStateList colors;
1575        int ts;
1576
1577        color = appearance.getColor(com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
1578        if (color != 0) {
1579            setHighlightColor(color);
1580        }
1581
1582        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1583                                              TextAppearance_textColor);
1584        if (colors != null) {
1585            setTextColor(colors);
1586        }
1587
1588        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
1589                                              TextAppearance_textSize, 0);
1590        if (ts != 0) {
1591            setRawTextSize(ts);
1592        }
1593
1594        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1595                                              TextAppearance_textColorHint);
1596        if (colors != null) {
1597            setHintTextColor(colors);
1598        }
1599
1600        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1601                                              TextAppearance_textColorLink);
1602        if (colors != null) {
1603            setLinkTextColor(colors);
1604        }
1605
1606        int typefaceIndex, styleIndex;
1607
1608        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
1609                                          TextAppearance_typeface, -1);
1610        styleIndex = appearance.getInt(com.android.internal.R.styleable.
1611                                       TextAppearance_textStyle, -1);
1612
1613        setTypefaceByIndex(typefaceIndex, styleIndex);
1614        appearance.recycle();
1615    }
1616
1617    /**
1618     * @return the size (in pixels) of the default text size in this TextView.
1619     */
1620    public float getTextSize() {
1621        return mTextPaint.getTextSize();
1622    }
1623
1624    /**
1625     * Set the default text size to the given value, interpreted as "scaled
1626     * pixel" units.  This size is adjusted based on the current density and
1627     * user font size preference.
1628     *
1629     * @param size The scaled pixel size.
1630     *
1631     * @attr ref android.R.styleable#TextView_textSize
1632     */
1633    @android.view.RemotableViewMethod
1634    public void setTextSize(float size) {
1635        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
1636    }
1637
1638    /**
1639     * Set the default text size to a given unit and value.  See {@link
1640     * TypedValue} for the possible dimension units.
1641     *
1642     * @param unit The desired dimension unit.
1643     * @param size The desired size in the given units.
1644     *
1645     * @attr ref android.R.styleable#TextView_textSize
1646     */
1647    public void setTextSize(int unit, float size) {
1648        Context c = getContext();
1649        Resources r;
1650
1651        if (c == null)
1652            r = Resources.getSystem();
1653        else
1654            r = c.getResources();
1655
1656        setRawTextSize(TypedValue.applyDimension(
1657            unit, size, r.getDisplayMetrics()));
1658    }
1659
1660    private void setRawTextSize(float size) {
1661        if (size != mTextPaint.getTextSize()) {
1662            mTextPaint.setTextSize(size);
1663
1664            if (mLayout != null) {
1665                nullLayouts();
1666                requestLayout();
1667                invalidate();
1668            }
1669        }
1670    }
1671
1672    /**
1673     * @return the extent by which text is currently being stretched
1674     * horizontally.  This will usually be 1.
1675     */
1676    public float getTextScaleX() {
1677        return mTextPaint.getTextScaleX();
1678    }
1679
1680    /**
1681     * Sets the extent by which text should be stretched horizontally.
1682     *
1683     * @attr ref android.R.styleable#TextView_textScaleX
1684     */
1685    @android.view.RemotableViewMethod
1686    public void setTextScaleX(float size) {
1687        if (size != mTextPaint.getTextScaleX()) {
1688            mUserSetTextScaleX = true;
1689            mTextPaint.setTextScaleX(size);
1690
1691            if (mLayout != null) {
1692                nullLayouts();
1693                requestLayout();
1694                invalidate();
1695            }
1696        }
1697    }
1698
1699    /**
1700     * Sets the typeface and style in which the text should be displayed.
1701     * Note that not all Typeface families actually have bold and italic
1702     * variants, so you may need to use
1703     * {@link #setTypeface(Typeface, int)} to get the appearance
1704     * that you actually want.
1705     *
1706     * @attr ref android.R.styleable#TextView_typeface
1707     * @attr ref android.R.styleable#TextView_textStyle
1708     */
1709    public void setTypeface(Typeface tf) {
1710        if (mTextPaint.getTypeface() != tf) {
1711            mTextPaint.setTypeface(tf);
1712
1713            if (mLayout != null) {
1714                nullLayouts();
1715                requestLayout();
1716                invalidate();
1717            }
1718        }
1719    }
1720
1721    /**
1722     * @return the current typeface and style in which the text is being
1723     * displayed.
1724     */
1725    public Typeface getTypeface() {
1726        return mTextPaint.getTypeface();
1727    }
1728
1729    /**
1730     * Sets the text color for all the states (normal, selected,
1731     * focused) to be this color.
1732     *
1733     * @attr ref android.R.styleable#TextView_textColor
1734     */
1735    @android.view.RemotableViewMethod
1736    public void setTextColor(int color) {
1737        mTextColor = ColorStateList.valueOf(color);
1738        updateTextColors();
1739    }
1740
1741    /**
1742     * Sets the text color.
1743     *
1744     * @attr ref android.R.styleable#TextView_textColor
1745     */
1746    public void setTextColor(ColorStateList colors) {
1747        if (colors == null) {
1748            throw new NullPointerException();
1749        }
1750
1751        mTextColor = colors;
1752        updateTextColors();
1753    }
1754
1755    /**
1756     * Return the set of text colors.
1757     *
1758     * @return Returns the set of text colors.
1759     */
1760    public final ColorStateList getTextColors() {
1761        return mTextColor;
1762    }
1763
1764    /**
1765     * <p>Return the current color selected for normal text.</p>
1766     *
1767     * @return Returns the current text color.
1768     */
1769    public final int getCurrentTextColor() {
1770        return mCurTextColor;
1771    }
1772
1773    /**
1774     * Sets the color used to display the selection highlight.
1775     *
1776     * @attr ref android.R.styleable#TextView_textColorHighlight
1777     */
1778    @android.view.RemotableViewMethod
1779    public void setHighlightColor(int color) {
1780        if (mHighlightColor != color) {
1781            mHighlightColor = color;
1782            invalidate();
1783        }
1784    }
1785
1786    /**
1787     * Gives the text a shadow of the specified radius and color, the specified
1788     * distance from its normal position.
1789     *
1790     * @attr ref android.R.styleable#TextView_shadowColor
1791     * @attr ref android.R.styleable#TextView_shadowDx
1792     * @attr ref android.R.styleable#TextView_shadowDy
1793     * @attr ref android.R.styleable#TextView_shadowRadius
1794     */
1795    public void setShadowLayer(float radius, float dx, float dy, int color) {
1796        mTextPaint.setShadowLayer(radius, dx, dy, color);
1797
1798        mShadowRadius = radius;
1799        mShadowDx = dx;
1800        mShadowDy = dy;
1801
1802        invalidate();
1803    }
1804
1805    /**
1806     * @return the base paint used for the text.  Please use this only to
1807     * consult the Paint's properties and not to change them.
1808     */
1809    public TextPaint getPaint() {
1810        return mTextPaint;
1811    }
1812
1813    /**
1814     * Sets the autolink mask of the text.  See {@link
1815     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1816     * possible values.
1817     *
1818     * @attr ref android.R.styleable#TextView_autoLink
1819     */
1820    @android.view.RemotableViewMethod
1821    public final void setAutoLinkMask(int mask) {
1822        mAutoLinkMask = mask;
1823    }
1824
1825    /**
1826     * Sets whether the movement method will automatically be set to
1827     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1828     * set to nonzero and links are detected in {@link #setText}.
1829     * The default is true.
1830     *
1831     * @attr ref android.R.styleable#TextView_linksClickable
1832     */
1833    @android.view.RemotableViewMethod
1834    public final void setLinksClickable(boolean whether) {
1835        mLinksClickable = whether;
1836    }
1837
1838    /**
1839     * Returns whether the movement method will automatically be set to
1840     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1841     * set to nonzero and links are detected in {@link #setText}.
1842     * The default is true.
1843     *
1844     * @attr ref android.R.styleable#TextView_linksClickable
1845     */
1846    public final boolean getLinksClickable() {
1847        return mLinksClickable;
1848    }
1849
1850    /**
1851     * Returns the list of URLSpans attached to the text
1852     * (by {@link Linkify} or otherwise) if any.  You can call
1853     * {@link URLSpan#getURL} on them to find where they link to
1854     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
1855     * to find the region of the text they are attached to.
1856     */
1857    public URLSpan[] getUrls() {
1858        if (mText instanceof Spanned) {
1859            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
1860        } else {
1861            return new URLSpan[0];
1862        }
1863    }
1864
1865    /**
1866     * Sets the color of the hint text.
1867     *
1868     * @attr ref android.R.styleable#TextView_textColorHint
1869     */
1870    @android.view.RemotableViewMethod
1871    public final void setHintTextColor(int color) {
1872        mHintTextColor = ColorStateList.valueOf(color);
1873        updateTextColors();
1874    }
1875
1876    /**
1877     * Sets the color of the hint text.
1878     *
1879     * @attr ref android.R.styleable#TextView_textColorHint
1880     */
1881    public final void setHintTextColor(ColorStateList colors) {
1882        mHintTextColor = colors;
1883        updateTextColors();
1884    }
1885
1886    /**
1887     * <p>Return the color used to paint the hint text.</p>
1888     *
1889     * @return Returns the list of hint text colors.
1890     */
1891    public final ColorStateList getHintTextColors() {
1892        return mHintTextColor;
1893    }
1894
1895    /**
1896     * <p>Return the current color selected to paint the hint text.</p>
1897     *
1898     * @return Returns the current hint text color.
1899     */
1900    public final int getCurrentHintTextColor() {
1901        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
1902    }
1903
1904    /**
1905     * Sets the color of links in the text.
1906     *
1907     * @attr ref android.R.styleable#TextView_textColorLink
1908     */
1909    @android.view.RemotableViewMethod
1910    public final void setLinkTextColor(int color) {
1911        mLinkTextColor = ColorStateList.valueOf(color);
1912        updateTextColors();
1913    }
1914
1915    /**
1916     * Sets the color of links in the text.
1917     *
1918     * @attr ref android.R.styleable#TextView_textColorLink
1919     */
1920    public final void setLinkTextColor(ColorStateList colors) {
1921        mLinkTextColor = colors;
1922        updateTextColors();
1923    }
1924
1925    /**
1926     * <p>Returns the color used to paint links in the text.</p>
1927     *
1928     * @return Returns the list of link text colors.
1929     */
1930    public final ColorStateList getLinkTextColors() {
1931        return mLinkTextColor;
1932    }
1933
1934    /**
1935     * Sets the horizontal alignment of the text and the
1936     * vertical gravity that will be used when there is extra space
1937     * in the TextView beyond what is required for the text itself.
1938     *
1939     * @see android.view.Gravity
1940     * @attr ref android.R.styleable#TextView_gravity
1941     */
1942    public void setGravity(int gravity) {
1943        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == 0) {
1944            gravity |= Gravity.LEFT;
1945        }
1946        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
1947            gravity |= Gravity.TOP;
1948        }
1949
1950        boolean newLayout = false;
1951
1952        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) !=
1953            (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK)) {
1954            newLayout = true;
1955        }
1956
1957        if (gravity != mGravity) {
1958            invalidate();
1959        }
1960
1961        mGravity = gravity;
1962
1963        if (mLayout != null && newLayout) {
1964            // XXX this is heavy-handed because no actual content changes.
1965            int want = mLayout.getWidth();
1966            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
1967
1968            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
1969                          mRight - mLeft - getCompoundPaddingLeft() -
1970                          getCompoundPaddingRight(), true);
1971        }
1972    }
1973
1974    /**
1975     * Returns the horizontal and vertical alignment of this TextView.
1976     *
1977     * @see android.view.Gravity
1978     * @attr ref android.R.styleable#TextView_gravity
1979     */
1980    public int getGravity() {
1981        return mGravity;
1982    }
1983
1984    /**
1985     * @return the flags on the Paint being used to display the text.
1986     * @see Paint#getFlags
1987     */
1988    public int getPaintFlags() {
1989        return mTextPaint.getFlags();
1990    }
1991
1992    /**
1993     * Sets flags on the Paint being used to display the text and
1994     * reflows the text if they are different from the old flags.
1995     * @see Paint#setFlags
1996     */
1997    @android.view.RemotableViewMethod
1998    public void setPaintFlags(int flags) {
1999        if (mTextPaint.getFlags() != flags) {
2000            mTextPaint.setFlags(flags);
2001
2002            if (mLayout != null) {
2003                nullLayouts();
2004                requestLayout();
2005                invalidate();
2006            }
2007        }
2008    }
2009
2010    /**
2011     * Sets whether the text should be allowed to be wider than the
2012     * View is.  If false, it will be wrapped to the width of the View.
2013     *
2014     * @attr ref android.R.styleable#TextView_scrollHorizontally
2015     */
2016    public void setHorizontallyScrolling(boolean whether) {
2017        mHorizontallyScrolling = whether;
2018
2019        if (mLayout != null) {
2020            nullLayouts();
2021            requestLayout();
2022            invalidate();
2023        }
2024    }
2025
2026    /**
2027     * Makes the TextView at least this many lines tall
2028     *
2029     * @attr ref android.R.styleable#TextView_minLines
2030     */
2031    @android.view.RemotableViewMethod
2032    public void setMinLines(int minlines) {
2033        mMinimum = minlines;
2034        mMinMode = LINES;
2035
2036        requestLayout();
2037        invalidate();
2038    }
2039
2040    /**
2041     * Makes the TextView at least this many pixels tall
2042     *
2043     * @attr ref android.R.styleable#TextView_minHeight
2044     */
2045    @android.view.RemotableViewMethod
2046    public void setMinHeight(int minHeight) {
2047        mMinimum = minHeight;
2048        mMinMode = PIXELS;
2049
2050        requestLayout();
2051        invalidate();
2052    }
2053
2054    /**
2055     * Makes the TextView at most this many lines tall
2056     *
2057     * @attr ref android.R.styleable#TextView_maxLines
2058     */
2059    @android.view.RemotableViewMethod
2060    public void setMaxLines(int maxlines) {
2061        mMaximum = maxlines;
2062        mMaxMode = LINES;
2063
2064        requestLayout();
2065        invalidate();
2066    }
2067
2068    /**
2069     * Makes the TextView at most this many pixels tall
2070     *
2071     * @attr ref android.R.styleable#TextView_maxHeight
2072     */
2073    @android.view.RemotableViewMethod
2074    public void setMaxHeight(int maxHeight) {
2075        mMaximum = maxHeight;
2076        mMaxMode = PIXELS;
2077
2078        requestLayout();
2079        invalidate();
2080    }
2081
2082    /**
2083     * Makes the TextView exactly this many lines tall
2084     *
2085     * @attr ref android.R.styleable#TextView_lines
2086     */
2087    @android.view.RemotableViewMethod
2088    public void setLines(int lines) {
2089        mMaximum = mMinimum = lines;
2090        mMaxMode = mMinMode = LINES;
2091
2092        requestLayout();
2093        invalidate();
2094    }
2095
2096    /**
2097     * Makes the TextView exactly this many pixels tall.
2098     * You could do the same thing by specifying this number in the
2099     * LayoutParams.
2100     *
2101     * @attr ref android.R.styleable#TextView_height
2102     */
2103    @android.view.RemotableViewMethod
2104    public void setHeight(int pixels) {
2105        mMaximum = mMinimum = pixels;
2106        mMaxMode = mMinMode = PIXELS;
2107
2108        requestLayout();
2109        invalidate();
2110    }
2111
2112    /**
2113     * Makes the TextView at least this many ems wide
2114     *
2115     * @attr ref android.R.styleable#TextView_minEms
2116     */
2117    @android.view.RemotableViewMethod
2118    public void setMinEms(int minems) {
2119        mMinWidth = minems;
2120        mMinWidthMode = EMS;
2121
2122        requestLayout();
2123        invalidate();
2124    }
2125
2126    /**
2127     * Makes the TextView at least this many pixels wide
2128     *
2129     * @attr ref android.R.styleable#TextView_minWidth
2130     */
2131    @android.view.RemotableViewMethod
2132    public void setMinWidth(int minpixels) {
2133        mMinWidth = minpixels;
2134        mMinWidthMode = PIXELS;
2135
2136        requestLayout();
2137        invalidate();
2138    }
2139
2140    /**
2141     * Makes the TextView at most this many ems wide
2142     *
2143     * @attr ref android.R.styleable#TextView_maxEms
2144     */
2145    @android.view.RemotableViewMethod
2146    public void setMaxEms(int maxems) {
2147        mMaxWidth = maxems;
2148        mMaxWidthMode = EMS;
2149
2150        requestLayout();
2151        invalidate();
2152    }
2153
2154    /**
2155     * Makes the TextView at most this many pixels wide
2156     *
2157     * @attr ref android.R.styleable#TextView_maxWidth
2158     */
2159    @android.view.RemotableViewMethod
2160    public void setMaxWidth(int maxpixels) {
2161        mMaxWidth = maxpixels;
2162        mMaxWidthMode = PIXELS;
2163
2164        requestLayout();
2165        invalidate();
2166    }
2167
2168    /**
2169     * Makes the TextView exactly this many ems wide
2170     *
2171     * @attr ref android.R.styleable#TextView_ems
2172     */
2173    @android.view.RemotableViewMethod
2174    public void setEms(int ems) {
2175        mMaxWidth = mMinWidth = ems;
2176        mMaxWidthMode = mMinWidthMode = EMS;
2177
2178        requestLayout();
2179        invalidate();
2180    }
2181
2182    /**
2183     * Makes the TextView exactly this many pixels wide.
2184     * You could do the same thing by specifying this number in the
2185     * LayoutParams.
2186     *
2187     * @attr ref android.R.styleable#TextView_width
2188     */
2189    @android.view.RemotableViewMethod
2190    public void setWidth(int pixels) {
2191        mMaxWidth = mMinWidth = pixels;
2192        mMaxWidthMode = mMinWidthMode = PIXELS;
2193
2194        requestLayout();
2195        invalidate();
2196    }
2197
2198
2199    /**
2200     * Sets line spacing for this TextView.  Each line will have its height
2201     * multiplied by <code>mult</code> and have <code>add</code> added to it.
2202     *
2203     * @attr ref android.R.styleable#TextView_lineSpacingExtra
2204     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
2205     */
2206    public void setLineSpacing(float add, float mult) {
2207        mSpacingMult = mult;
2208        mSpacingAdd = add;
2209
2210        if (mLayout != null) {
2211            nullLayouts();
2212            requestLayout();
2213            invalidate();
2214        }
2215    }
2216
2217    /**
2218     * Convenience method: Append the specified text to the TextView's
2219     * display buffer, upgrading it to BufferType.EDITABLE if it was
2220     * not already editable.
2221     */
2222    public final void append(CharSequence text) {
2223        append(text, 0, text.length());
2224    }
2225
2226    /**
2227     * Convenience method: Append the specified text slice to the TextView's
2228     * display buffer, upgrading it to BufferType.EDITABLE if it was
2229     * not already editable.
2230     */
2231    public void append(CharSequence text, int start, int end) {
2232        if (!(mText instanceof Editable)) {
2233            setText(mText, BufferType.EDITABLE);
2234        }
2235
2236        ((Editable) mText).append(text, start, end);
2237    }
2238
2239    private void updateTextColors() {
2240        boolean inval = false;
2241        int color = mTextColor.getColorForState(getDrawableState(), 0);
2242        if (color != mCurTextColor) {
2243            mCurTextColor = color;
2244            inval = true;
2245        }
2246        if (mLinkTextColor != null) {
2247            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
2248            if (color != mTextPaint.linkColor) {
2249                mTextPaint.linkColor = color;
2250                inval = true;
2251            }
2252        }
2253        if (mHintTextColor != null) {
2254            color = mHintTextColor.getColorForState(getDrawableState(), 0);
2255            if (color != mCurHintTextColor && mText.length() == 0) {
2256                mCurHintTextColor = color;
2257                inval = true;
2258            }
2259        }
2260        if (inval) {
2261            invalidate();
2262        }
2263    }
2264
2265    @Override
2266    protected void drawableStateChanged() {
2267        super.drawableStateChanged();
2268        if (mTextColor != null && mTextColor.isStateful()
2269                || (mHintTextColor != null && mHintTextColor.isStateful())
2270                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
2271            updateTextColors();
2272        }
2273
2274        final Drawables dr = mDrawables;
2275        if (dr != null) {
2276            int[] state = getDrawableState();
2277            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
2278                dr.mDrawableTop.setState(state);
2279            }
2280            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
2281                dr.mDrawableBottom.setState(state);
2282            }
2283            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
2284                dr.mDrawableLeft.setState(state);
2285            }
2286            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
2287                dr.mDrawableRight.setState(state);
2288            }
2289        }
2290    }
2291
2292    /**
2293     * User interface state that is stored by TextView for implementing
2294     * {@link View#onSaveInstanceState}.
2295     */
2296    public static class SavedState extends BaseSavedState {
2297        int selStart;
2298        int selEnd;
2299        CharSequence text;
2300        boolean frozenWithFocus;
2301        CharSequence error;
2302
2303        SavedState(Parcelable superState) {
2304            super(superState);
2305        }
2306
2307        @Override
2308        public void writeToParcel(Parcel out, int flags) {
2309            super.writeToParcel(out, flags);
2310            out.writeInt(selStart);
2311            out.writeInt(selEnd);
2312            out.writeInt(frozenWithFocus ? 1 : 0);
2313            TextUtils.writeToParcel(text, out, flags);
2314
2315            if (error == null) {
2316                out.writeInt(0);
2317            } else {
2318                out.writeInt(1);
2319                TextUtils.writeToParcel(error, out, flags);
2320            }
2321        }
2322
2323        @Override
2324        public String toString() {
2325            String str = "TextView.SavedState{"
2326                    + Integer.toHexString(System.identityHashCode(this))
2327                    + " start=" + selStart + " end=" + selEnd;
2328            if (text != null) {
2329                str += " text=" + text;
2330            }
2331            return str + "}";
2332        }
2333
2334        public static final Parcelable.Creator<SavedState> CREATOR
2335                = new Parcelable.Creator<SavedState>() {
2336            public SavedState createFromParcel(Parcel in) {
2337                return new SavedState(in);
2338            }
2339
2340            public SavedState[] newArray(int size) {
2341                return new SavedState[size];
2342            }
2343        };
2344
2345        private SavedState(Parcel in) {
2346            super(in);
2347            selStart = in.readInt();
2348            selEnd = in.readInt();
2349            frozenWithFocus = (in.readInt() != 0);
2350            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2351
2352            if (in.readInt() != 0) {
2353                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2354            }
2355        }
2356    }
2357
2358    @Override
2359    public Parcelable onSaveInstanceState() {
2360        Parcelable superState = super.onSaveInstanceState();
2361
2362        // Save state if we are forced to
2363        boolean save = mFreezesText;
2364        int start = 0;
2365        int end = 0;
2366
2367        if (mText != null) {
2368            start = Selection.getSelectionStart(mText);
2369            end = Selection.getSelectionEnd(mText);
2370            if (start >= 0 || end >= 0) {
2371                // Or save state if there is a selection
2372                save = true;
2373            }
2374        }
2375
2376        if (save) {
2377            SavedState ss = new SavedState(superState);
2378            // XXX Should also save the current scroll position!
2379            ss.selStart = start;
2380            ss.selEnd = end;
2381
2382            if (mText instanceof Spanned) {
2383                /*
2384                 * Calling setText() strips off any ChangeWatchers;
2385                 * strip them now to avoid leaking references.
2386                 * But do it to a copy so that if there are any
2387                 * further changes to the text of this view, it
2388                 * won't get into an inconsistent state.
2389                 */
2390
2391                Spannable sp = new SpannableString(mText);
2392
2393                for (ChangeWatcher cw :
2394                     sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
2395                    sp.removeSpan(cw);
2396                }
2397
2398                ss.text = sp;
2399            } else {
2400                ss.text = mText.toString();
2401            }
2402
2403            if (isFocused() && start >= 0 && end >= 0) {
2404                ss.frozenWithFocus = true;
2405            }
2406
2407            ss.error = mError;
2408
2409            return ss;
2410        }
2411
2412        return superState;
2413    }
2414
2415    @Override
2416    public void onRestoreInstanceState(Parcelable state) {
2417        if (!(state instanceof SavedState)) {
2418            super.onRestoreInstanceState(state);
2419            return;
2420        }
2421
2422        SavedState ss = (SavedState)state;
2423        super.onRestoreInstanceState(ss.getSuperState());
2424
2425        // XXX restore buffer type too, as well as lots of other stuff
2426        if (ss.text != null) {
2427            setText(ss.text);
2428        }
2429
2430        if (ss.selStart >= 0 && ss.selEnd >= 0) {
2431            if (mText instanceof Spannable) {
2432                int len = mText.length();
2433
2434                if (ss.selStart > len || ss.selEnd > len) {
2435                    String restored = "";
2436
2437                    if (ss.text != null) {
2438                        restored = "(restored) ";
2439                    }
2440
2441                    Log.e("TextView", "Saved cursor position " + ss.selStart +
2442                          "/" + ss.selEnd + " out of range for " + restored +
2443                          "text " + mText);
2444                } else {
2445                    Selection.setSelection((Spannable) mText, ss.selStart,
2446                                           ss.selEnd);
2447
2448                    if (ss.frozenWithFocus) {
2449                        mFrozenWithFocus = true;
2450                    }
2451                }
2452            }
2453        }
2454
2455        if (ss.error != null) {
2456            final CharSequence error = ss.error;
2457            // Display the error later, after the first layout pass
2458            post(new Runnable() {
2459                public void run() {
2460                    setError(error);
2461                }
2462            });
2463        }
2464    }
2465
2466    /**
2467     * Control whether this text view saves its entire text contents when
2468     * freezing to an icicle, in addition to dynamic state such as cursor
2469     * position.  By default this is false, not saving the text.  Set to true
2470     * if the text in the text view is not being saved somewhere else in
2471     * persistent storage (such as in a content provider) so that if the
2472     * view is later thawed the user will not lose their data.
2473     *
2474     * @param freezesText Controls whether a frozen icicle should include the
2475     * entire text data: true to include it, false to not.
2476     *
2477     * @attr ref android.R.styleable#TextView_freezesText
2478     */
2479    @android.view.RemotableViewMethod
2480    public void setFreezesText(boolean freezesText) {
2481        mFreezesText = freezesText;
2482    }
2483
2484    /**
2485     * Return whether this text view is including its entire text contents
2486     * in frozen icicles.
2487     *
2488     * @return Returns true if text is included, false if it isn't.
2489     *
2490     * @see #setFreezesText
2491     */
2492    public boolean getFreezesText() {
2493        return mFreezesText;
2494    }
2495
2496    ///////////////////////////////////////////////////////////////////////////
2497
2498    /**
2499     * Sets the Factory used to create new Editables.
2500     */
2501    public final void setEditableFactory(Editable.Factory factory) {
2502        mEditableFactory = factory;
2503        setText(mText);
2504    }
2505
2506    /**
2507     * Sets the Factory used to create new Spannables.
2508     */
2509    public final void setSpannableFactory(Spannable.Factory factory) {
2510        mSpannableFactory = factory;
2511        setText(mText);
2512    }
2513
2514    /**
2515     * Sets the string value of the TextView. TextView <em>does not</em> accept
2516     * HTML-like formatting, which you can do with text strings in XML resource files.
2517     * To style your strings, attach android.text.style.* objects to a
2518     * {@link android.text.SpannableString SpannableString}, or see the
2519     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
2520     * Available Resource Types</a> documentation for an example of setting
2521     * formatted text in the XML resource file.
2522     *
2523     * @attr ref android.R.styleable#TextView_text
2524     */
2525    @android.view.RemotableViewMethod
2526    public final void setText(CharSequence text) {
2527        setText(text, mBufferType);
2528    }
2529
2530    /**
2531     * Like {@link #setText(CharSequence)},
2532     * except that the cursor position (if any) is retained in the new text.
2533     *
2534     * @param text The new text to place in the text view.
2535     *
2536     * @see #setText(CharSequence)
2537     */
2538    @android.view.RemotableViewMethod
2539    public final void setTextKeepState(CharSequence text) {
2540        setTextKeepState(text, mBufferType);
2541    }
2542
2543    /**
2544     * Sets the text that this TextView is to display (see
2545     * {@link #setText(CharSequence)}) and also sets whether it is stored
2546     * in a styleable/spannable buffer and whether it is editable.
2547     *
2548     * @attr ref android.R.styleable#TextView_text
2549     * @attr ref android.R.styleable#TextView_bufferType
2550     */
2551    public void setText(CharSequence text, BufferType type) {
2552        setText(text, type, true, 0);
2553
2554        if (mCharWrapper != null) {
2555            mCharWrapper.mChars = null;
2556        }
2557    }
2558
2559    private void setText(CharSequence text, BufferType type,
2560                         boolean notifyBefore, int oldlen) {
2561        if (text == null) {
2562            text = "";
2563        }
2564
2565        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
2566
2567        if (text instanceof Spanned &&
2568            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
2569            setHorizontalFadingEdgeEnabled(true);
2570            setEllipsize(TextUtils.TruncateAt.MARQUEE);
2571        }
2572
2573        int n = mFilters.length;
2574        for (int i = 0; i < n; i++) {
2575            CharSequence out = mFilters[i].filter(text, 0, text.length(),
2576                                                  EMPTY_SPANNED, 0, 0);
2577            if (out != null) {
2578                text = out;
2579            }
2580        }
2581
2582        if (notifyBefore) {
2583            if (mText != null) {
2584                oldlen = mText.length();
2585                sendBeforeTextChanged(mText, 0, oldlen, text.length());
2586            } else {
2587                sendBeforeTextChanged("", 0, 0, text.length());
2588            }
2589        }
2590
2591        boolean needEditableForNotification = false;
2592
2593        if (mListeners != null && mListeners.size() != 0) {
2594            needEditableForNotification = true;
2595        }
2596
2597        if (type == BufferType.EDITABLE || mInput != null ||
2598            needEditableForNotification) {
2599            Editable t = mEditableFactory.newEditable(text);
2600            text = t;
2601            setFilters(t, mFilters);
2602            InputMethodManager imm = InputMethodManager.peekInstance();
2603            if (imm != null) imm.restartInput(this);
2604        } else if (type == BufferType.SPANNABLE || mMovement != null) {
2605            text = mSpannableFactory.newSpannable(text);
2606        } else if (!(text instanceof CharWrapper)) {
2607            text = TextUtils.stringOrSpannedString(text);
2608        }
2609
2610        if (mAutoLinkMask != 0) {
2611            Spannable s2;
2612
2613            if (type == BufferType.EDITABLE || text instanceof Spannable) {
2614                s2 = (Spannable) text;
2615            } else {
2616                s2 = mSpannableFactory.newSpannable(text);
2617            }
2618
2619            if (Linkify.addLinks(s2, mAutoLinkMask)) {
2620                text = s2;
2621                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
2622
2623                /*
2624                 * We must go ahead and set the text before changing the
2625                 * movement method, because setMovementMethod() may call
2626                 * setText() again to try to upgrade the buffer type.
2627                 */
2628                mText = text;
2629
2630                if (mLinksClickable) {
2631                    setMovementMethod(LinkMovementMethod.getInstance());
2632                }
2633            }
2634        }
2635
2636        mBufferType = type;
2637        mText = text;
2638
2639        if (mTransformation == null)
2640            mTransformed = text;
2641        else
2642            mTransformed = mTransformation.getTransformation(text, this);
2643
2644        final int textLength = text.length();
2645
2646        if (text instanceof Spannable) {
2647            Spannable sp = (Spannable) text;
2648
2649            // Remove any ChangeWatchers that might have come
2650            // from other TextViews.
2651            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
2652            final int count = watchers.length;
2653            for (int i = 0; i < count; i++)
2654                sp.removeSpan(watchers[i]);
2655
2656            if (mChangeWatcher == null)
2657                mChangeWatcher = new ChangeWatcher();
2658
2659            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
2660                       (PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
2661
2662            if (mInput != null) {
2663                sp.setSpan(mInput, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2664            }
2665
2666            if (mTransformation != null) {
2667                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2668
2669            }
2670
2671            if (mMovement != null) {
2672                mMovement.initialize(this, (Spannable) text);
2673
2674                /*
2675                 * Initializing the movement method will have set the
2676                 * selection, so reset mSelectionMoved to keep that from
2677                 * interfering with the normal on-focus selection-setting.
2678                 */
2679                mSelectionMoved = false;
2680            }
2681        }
2682
2683        if (mLayout != null) {
2684            checkForRelayout();
2685        }
2686
2687        sendOnTextChanged(text, 0, oldlen, textLength);
2688        onTextChanged(text, 0, oldlen, textLength);
2689
2690        if (needEditableForNotification) {
2691            sendAfterTextChanged((Editable) text);
2692        }
2693    }
2694
2695    /**
2696     * Sets the TextView to display the specified slice of the specified
2697     * char array.  You must promise that you will not change the contents
2698     * of the array except for right before another call to setText(),
2699     * since the TextView has no way to know that the text
2700     * has changed and that it needs to invalidate and re-layout.
2701     */
2702    public final void setText(char[] text, int start, int len) {
2703        int oldlen = 0;
2704
2705        if (start < 0 || len < 0 || start + len > text.length) {
2706            throw new IndexOutOfBoundsException(start + ", " + len);
2707        }
2708
2709        /*
2710         * We must do the before-notification here ourselves because if
2711         * the old text is a CharWrapper we destroy it before calling
2712         * into the normal path.
2713         */
2714        if (mText != null) {
2715            oldlen = mText.length();
2716            sendBeforeTextChanged(mText, 0, oldlen, len);
2717        } else {
2718            sendBeforeTextChanged("", 0, 0, len);
2719        }
2720
2721        if (mCharWrapper == null) {
2722            mCharWrapper = new CharWrapper(text, start, len);
2723        } else {
2724            mCharWrapper.set(text, start, len);
2725        }
2726
2727        setText(mCharWrapper, mBufferType, false, oldlen);
2728    }
2729
2730    private static class CharWrapper
2731            implements CharSequence, GetChars, GraphicsOperations {
2732        private char[] mChars;
2733        private int mStart, mLength;
2734
2735        public CharWrapper(char[] chars, int start, int len) {
2736            mChars = chars;
2737            mStart = start;
2738            mLength = len;
2739        }
2740
2741        /* package */ void set(char[] chars, int start, int len) {
2742            mChars = chars;
2743            mStart = start;
2744            mLength = len;
2745        }
2746
2747        public int length() {
2748            return mLength;
2749        }
2750
2751        public char charAt(int off) {
2752            return mChars[off + mStart];
2753        }
2754
2755        public String toString() {
2756            return new String(mChars, mStart, mLength);
2757        }
2758
2759        public CharSequence subSequence(int start, int end) {
2760            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2761                throw new IndexOutOfBoundsException(start + ", " + end);
2762            }
2763
2764            return new String(mChars, start + mStart, end - start);
2765        }
2766
2767        public void getChars(int start, int end, char[] buf, int off) {
2768            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2769                throw new IndexOutOfBoundsException(start + ", " + end);
2770            }
2771
2772            System.arraycopy(mChars, start + mStart, buf, off, end - start);
2773        }
2774
2775        public void drawText(Canvas c, int start, int end,
2776                             float x, float y, Paint p) {
2777            c.drawText(mChars, start + mStart, end - start, x, y, p);
2778        }
2779
2780        public float measureText(int start, int end, Paint p) {
2781            return p.measureText(mChars, start + mStart, end - start);
2782        }
2783
2784        public int getTextWidths(int start, int end, float[] widths, Paint p) {
2785            return p.getTextWidths(mChars, start + mStart, end - start, widths);
2786        }
2787    }
2788
2789    /**
2790     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
2791     * except that the cursor position (if any) is retained in the new text.
2792     *
2793     * @see #setText(CharSequence, android.widget.TextView.BufferType)
2794     */
2795    public final void setTextKeepState(CharSequence text, BufferType type) {
2796        int start = getSelectionStart();
2797        int end = getSelectionEnd();
2798        int len = text.length();
2799
2800        setText(text, type);
2801
2802        if (start >= 0 || end >= 0) {
2803            if (mText instanceof Spannable) {
2804                Selection.setSelection((Spannable) mText,
2805                                       Math.max(0, Math.min(start, len)),
2806                                       Math.max(0, Math.min(end, len)));
2807            }
2808        }
2809    }
2810
2811    @android.view.RemotableViewMethod
2812    public final void setText(int resid) {
2813        setText(getContext().getResources().getText(resid));
2814    }
2815
2816    public final void setText(int resid, BufferType type) {
2817        setText(getContext().getResources().getText(resid), type);
2818    }
2819
2820    /**
2821     * Sets the text to be displayed when the text of the TextView is empty.
2822     * Null means to use the normal empty text. The hint does not currently
2823     * participate in determining the size of the view.
2824     *
2825     * This method is deprecated. Use {link #setHint(int, String)} or
2826     * {link #setHint(CharSequence, String)} instead.
2827     *
2828     * @attr ref android.R.styleable#TextView_hint
2829     */
2830    @android.view.RemotableViewMethod
2831    public final void setHint(CharSequence hint) {
2832        mHint = TextUtils.stringOrSpannedString(hint);
2833
2834        if (mLayout != null) {
2835            checkForRelayout();
2836        }
2837
2838        if (mText.length() == 0) {
2839            invalidate();
2840        }
2841    }
2842
2843    /**
2844     * Sets the text to be displayed when the text of the TextView is empty,
2845     * from a resource.
2846     *
2847     * This method is deprecated. Use {link #setHint(int, String)} or
2848     * {link #setHint(CharSequence, String)} instead.
2849     *
2850     * @attr ref android.R.styleable#TextView_hint
2851     */
2852    @android.view.RemotableViewMethod
2853    public final void setHint(int resid) {
2854        setHint(getContext().getResources().getText(resid));
2855    }
2856
2857    /**
2858     * Returns the hint that is displayed when the text of the TextView
2859     * is empty.
2860     *
2861     * @attr ref android.R.styleable#TextView_hint
2862     */
2863    @ViewDebug.CapturedViewProperty
2864    public CharSequence getHint() {
2865        return mHint;
2866    }
2867
2868    /**
2869     * Set the type of the content with a constant as defined for
2870     * {@link EditorInfo#inputType}.  This will take care of changing
2871     * the key listener, by calling {@link #setKeyListener(KeyListener)}, to
2872     * match the given content type.  If the given content type is
2873     * {@link EditorInfo#TYPE_NULL} then a soft keyboard will
2874     * not be displayed for this text view.
2875     *
2876     * @see #getInputType()
2877     * @see #setRawInputType(int)
2878     * @see android.text.InputType
2879     * @attr ref android.R.styleable#TextView_inputType
2880     */
2881    public void setInputType(int type) {
2882        final boolean wasPassword = isPasswordInputType(mInputType);
2883        final boolean wasVisiblePassword = isVisiblePasswordInputType(mInputType);
2884        setInputType(type, false);
2885        final boolean isPassword = isPasswordInputType(type);
2886        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
2887        boolean forceUpdate = false;
2888        if (isPassword) {
2889            setTransformationMethod(PasswordTransformationMethod.getInstance());
2890            setTypefaceByIndex(MONOSPACE, 0);
2891        } else if (isVisiblePassword) {
2892            if (mTransformation == PasswordTransformationMethod.getInstance()) {
2893                forceUpdate = true;
2894            }
2895            setTypefaceByIndex(MONOSPACE, 0);
2896        } else if (wasPassword || wasVisiblePassword) {
2897            // not in password mode, clean up typeface and transformation
2898            setTypefaceByIndex(-1, -1);
2899            if (mTransformation == PasswordTransformationMethod.getInstance()) {
2900                forceUpdate = true;
2901            }
2902        }
2903
2904        boolean multiLine = (type&(EditorInfo.TYPE_MASK_CLASS
2905                        | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
2906                (EditorInfo.TYPE_CLASS_TEXT
2907                        | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
2908
2909        // We need to update the single line mode if it has changed or we
2910        // were previously in password mode.
2911        if (mSingleLine == multiLine || forceUpdate) {
2912            // Change single line mode, but only change the transformation if
2913            // we are not in password mode.
2914            applySingleLine(!multiLine, !isPassword);
2915        }
2916
2917        InputMethodManager imm = InputMethodManager.peekInstance();
2918        if (imm != null) imm.restartInput(this);
2919    }
2920
2921    private boolean isPasswordInputType(int inputType) {
2922        final int variation = inputType & (EditorInfo.TYPE_MASK_CLASS
2923                | EditorInfo.TYPE_MASK_VARIATION);
2924        return variation
2925                == (EditorInfo.TYPE_CLASS_TEXT
2926                        | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
2927    }
2928
2929    private boolean isVisiblePasswordInputType(int inputType) {
2930        final int variation = inputType & (EditorInfo.TYPE_MASK_CLASS
2931                | EditorInfo.TYPE_MASK_VARIATION);
2932        return variation
2933                == (EditorInfo.TYPE_CLASS_TEXT
2934                        | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
2935    }
2936
2937    /**
2938     * Directly change the content type integer of the text view, without
2939     * modifying any other state.
2940     * @see #setInputType(int)
2941     * @see android.text.InputType
2942     * @attr ref android.R.styleable#TextView_inputType
2943     */
2944    public void setRawInputType(int type) {
2945        mInputType = type;
2946    }
2947
2948    private void setInputType(int type, boolean direct) {
2949        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
2950        KeyListener input;
2951        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
2952            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT)
2953                    != 0;
2954            TextKeyListener.Capitalize cap;
2955            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
2956                cap = TextKeyListener.Capitalize.CHARACTERS;
2957            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
2958                cap = TextKeyListener.Capitalize.WORDS;
2959            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
2960                cap = TextKeyListener.Capitalize.SENTENCES;
2961            } else {
2962                cap = TextKeyListener.Capitalize.NONE;
2963            }
2964            input = TextKeyListener.getInstance(autotext, cap);
2965        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
2966            input = DigitsKeyListener.getInstance(
2967                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
2968                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
2969        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
2970            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
2971                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
2972                    input = DateKeyListener.getInstance();
2973                    break;
2974                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
2975                    input = TimeKeyListener.getInstance();
2976                    break;
2977                default:
2978                    input = DateTimeKeyListener.getInstance();
2979                    break;
2980            }
2981        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
2982            input = DialerKeyListener.getInstance();
2983        } else {
2984            input = TextKeyListener.getInstance();
2985        }
2986        mInputType = type;
2987        if (direct) mInput = input;
2988        else {
2989            setKeyListenerOnly(input);
2990        }
2991    }
2992
2993    /**
2994     * Get the type of the content.
2995     *
2996     * @see #setInputType(int)
2997     * @see android.text.InputType
2998     */
2999    public int getInputType() {
3000        return mInputType;
3001    }
3002
3003    /**
3004     * Change the editor type integer associated with the text view, which
3005     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
3006     * has focus.
3007     * @see #getImeOptions
3008     * @see android.view.inputmethod.EditorInfo
3009     * @attr ref android.R.styleable#TextView_imeOptions
3010     */
3011    public void setImeOptions(int imeOptions) {
3012        if (mInputContentType == null) {
3013            mInputContentType = new InputContentType();
3014        }
3015        mInputContentType.imeOptions = imeOptions;
3016    }
3017
3018    /**
3019     * Get the type of the IME editor.
3020     *
3021     * @see #setImeOptions(int)
3022     * @see android.view.inputmethod.EditorInfo
3023     */
3024    public int getImeOptions() {
3025        return mInputContentType != null
3026                ? mInputContentType.imeOptions : EditorInfo.IME_NULL;
3027    }
3028
3029    /**
3030     * Change the custom IME action associated with the text view, which
3031     * will be reported to an IME with {@link EditorInfo#actionLabel}
3032     * and {@link EditorInfo#actionId} when it has focus.
3033     * @see #getImeActionLabel
3034     * @see #getImeActionId
3035     * @see android.view.inputmethod.EditorInfo
3036     * @attr ref android.R.styleable#TextView_imeActionLabel
3037     * @attr ref android.R.styleable#TextView_imeActionId
3038     */
3039    public void setImeActionLabel(CharSequence label, int actionId) {
3040        if (mInputContentType == null) {
3041            mInputContentType = new InputContentType();
3042        }
3043        mInputContentType.imeActionLabel = label;
3044        mInputContentType.imeActionId = actionId;
3045    }
3046
3047    /**
3048     * Get the IME action label previous set with {@link #setImeActionLabel}.
3049     *
3050     * @see #setImeActionLabel
3051     * @see android.view.inputmethod.EditorInfo
3052     */
3053    public CharSequence getImeActionLabel() {
3054        return mInputContentType != null
3055                ? mInputContentType.imeActionLabel : null;
3056    }
3057
3058    /**
3059     * Get the IME action ID previous set with {@link #setImeActionLabel}.
3060     *
3061     * @see #setImeActionLabel
3062     * @see android.view.inputmethod.EditorInfo
3063     */
3064    public int getImeActionId() {
3065        return mInputContentType != null
3066                ? mInputContentType.imeActionId : 0;
3067    }
3068
3069    /**
3070     * Set a special listener to be called when an action is performed
3071     * on the text view.  This will be called when the enter key is pressed,
3072     * or when an action supplied to the IME is selected by the user.  Setting
3073     * this means that the normal hard key event will not insert a newline
3074     * into the text view, even if it is multi-line; holding down the ALT
3075     * modifier will, however, allow the user to insert a newline character.
3076     */
3077    public void setOnEditorActionListener(OnEditorActionListener l) {
3078        if (mInputContentType == null) {
3079            mInputContentType = new InputContentType();
3080        }
3081        mInputContentType.onEditorActionListener = l;
3082    }
3083
3084    /**
3085     * Called when an attached input method calls
3086     * {@link InputConnection#performEditorAction(int)
3087     * InputConnection.performEditorAction()}
3088     * for this text view.  The default implementation will call your action
3089     * listener supplied to {@link #setOnEditorActionListener}, or perform
3090     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
3091     * EditorInfo.IME_ACTION_NEXT} or {@link EditorInfo#IME_ACTION_DONE
3092     * EditorInfo.IME_ACTION_DONE}.
3093     *
3094     * <p>For backwards compatibility, if no IME options have been set and the
3095     * text view would not normally advance focus on enter, then
3096     * the NEXT and DONE actions received here will be turned into an enter
3097     * key down/up pair to go through the normal key handling.
3098     *
3099     * @param actionCode The code of the action being performed.
3100     *
3101     * @see #setOnEditorActionListener
3102     */
3103    public void onEditorAction(int actionCode) {
3104        final InputContentType ict = mInputContentType;
3105        if (ict != null) {
3106            if (ict.onEditorActionListener != null) {
3107                if (ict.onEditorActionListener.onEditorAction(this,
3108                        actionCode, null)) {
3109                    return;
3110                }
3111            }
3112
3113            // This is the handling for some default action.
3114            // Note that for backwards compatibility we don't do this
3115            // default handling if explicit ime options have not been given,
3116            // instead turning this into the normal enter key codes that an
3117            // app may be expecting.
3118            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
3119                View v = focusSearch(FOCUS_DOWN);
3120                if (v != null) {
3121                    if (!v.requestFocus(FOCUS_DOWN)) {
3122                        throw new IllegalStateException("focus search returned a view " +
3123                                "that wasn't able to take focus!");
3124                    }
3125                }
3126                return;
3127
3128            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
3129                InputMethodManager imm = InputMethodManager.peekInstance();
3130                if (imm != null) {
3131                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
3132                }
3133                return;
3134            }
3135        }
3136
3137        Handler h = getHandler();
3138        if (h != null) {
3139            long eventTime = SystemClock.uptimeMillis();
3140            h.sendMessage(h.obtainMessage(ViewRoot.DISPATCH_KEY_FROM_IME,
3141                    new KeyEvent(eventTime, eventTime,
3142                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0, 0, 0,
3143                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3144                    | KeyEvent.FLAG_EDITOR_ACTION)));
3145            h.sendMessage(h.obtainMessage(ViewRoot.DISPATCH_KEY_FROM_IME,
3146                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
3147                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0, 0, 0,
3148                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3149                    | KeyEvent.FLAG_EDITOR_ACTION)));
3150        }
3151    }
3152
3153    /**
3154     * Set the private content type of the text, which is the
3155     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
3156     * field that will be filled in when creating an input connection.
3157     *
3158     * @see #getPrivateImeOptions()
3159     * @see EditorInfo#privateImeOptions
3160     * @attr ref android.R.styleable#TextView_privateImeOptions
3161     */
3162    public void setPrivateImeOptions(String type) {
3163        if (mInputContentType == null) mInputContentType = new InputContentType();
3164        mInputContentType.privateImeOptions = type;
3165    }
3166
3167    /**
3168     * Get the private type of the content.
3169     *
3170     * @see #setPrivateImeOptions(String)
3171     * @see EditorInfo#privateImeOptions
3172     */
3173    public String getPrivateImeOptions() {
3174        return mInputContentType != null
3175                ? mInputContentType.privateImeOptions : null;
3176    }
3177
3178    /**
3179     * Set the extra input data of the text, which is the
3180     * {@link EditorInfo#extras TextBoxAttribute.extras}
3181     * Bundle that will be filled in when creating an input connection.  The
3182     * given integer is the resource ID of an XML resource holding an
3183     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
3184     *
3185     * @see #getInputExtras(boolean)
3186     * @see EditorInfo#extras
3187     * @attr ref android.R.styleable#TextView_editorExtras
3188     */
3189    public void setInputExtras(int xmlResId)
3190            throws XmlPullParserException, IOException {
3191        XmlResourceParser parser = getResources().getXml(xmlResId);
3192        if (mInputContentType == null) mInputContentType = new InputContentType();
3193        mInputContentType.extras = new Bundle();
3194        getResources().parseBundleExtras(parser, mInputContentType.extras);
3195    }
3196
3197    /**
3198     * Retrieve the input extras currently associated with the text view, which
3199     * can be viewed as well as modified.
3200     *
3201     * @param create If true, the extras will be created if they don't already
3202     * exist.  Otherwise, null will be returned if none have been created.
3203     * @see #setInputExtras(int)View
3204     * @see EditorInfo#extras
3205     * @attr ref android.R.styleable#TextView_editorExtras
3206     */
3207    public Bundle getInputExtras(boolean create) {
3208        if (mInputContentType == null) {
3209            if (!create) return null;
3210            mInputContentType = new InputContentType();
3211        }
3212        if (mInputContentType.extras == null) {
3213            if (!create) return null;
3214            mInputContentType.extras = new Bundle();
3215        }
3216        return mInputContentType.extras;
3217    }
3218
3219    /**
3220     * Returns the error message that was set to be displayed with
3221     * {@link #setError}, or <code>null</code> if no error was set
3222     * or if it the error was cleared by the widget after user input.
3223     */
3224    public CharSequence getError() {
3225        return mError;
3226    }
3227
3228    /**
3229     * Sets the right-hand compound drawable of the TextView to the "error"
3230     * icon and sets an error message that will be displayed in a popup when
3231     * the TextView has focus.  The icon and error message will be reset to
3232     * null when any key events cause changes to the TextView's text.  If the
3233     * <code>error</code> is <code>null</code>, the error message and icon
3234     * will be cleared.
3235     */
3236    @android.view.RemotableViewMethod
3237    public void setError(CharSequence error) {
3238        if (error == null) {
3239            setError(null, null);
3240        } else {
3241            Drawable dr = getContext().getResources().
3242                getDrawable(com.android.internal.R.drawable.
3243                            indicator_input_error);
3244
3245            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
3246            setError(error, dr);
3247        }
3248    }
3249
3250    /**
3251     * Sets the right-hand compound drawable of the TextView to the specified
3252     * icon and sets an error message that will be displayed in a popup when
3253     * the TextView has focus.  The icon and error message will be reset to
3254     * null when any key events cause changes to the TextView's text.  The
3255     * drawable must already have had {@link Drawable#setBounds} set on it.
3256     * If the <code>error</code> is <code>null</code>, the error message will
3257     * be cleared (and you should provide a <code>null</code> icon as well).
3258     */
3259    public void setError(CharSequence error, Drawable icon) {
3260        error = TextUtils.stringOrSpannedString(error);
3261
3262        mError = error;
3263        mErrorWasChanged = true;
3264        final Drawables dr = mDrawables;
3265        if (dr != null) {
3266            setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop,
3267                                 icon, dr.mDrawableBottom);
3268        } else {
3269            setCompoundDrawables(null, null, icon, null);
3270        }
3271
3272        if (error == null) {
3273            if (mPopup != null) {
3274                if (mPopup.isShowing()) {
3275                    mPopup.dismiss();
3276                }
3277
3278                mPopup = null;
3279            }
3280        } else {
3281            if (isFocused()) {
3282                showError();
3283            }
3284        }
3285    }
3286
3287    private void showError() {
3288        if (getWindowToken() == null) {
3289            mShowErrorAfterAttach = true;
3290            return;
3291        }
3292
3293        if (mPopup == null) {
3294            LayoutInflater inflater = LayoutInflater.from(getContext());
3295            final TextView err = (TextView) inflater.inflate(com.android.internal.R.layout.textview_hint,
3296                    null);
3297
3298            final float scale = getResources().getDisplayMetrics().density;
3299            mPopup = new ErrorPopup(err, (int) (200 * scale + 0.5f),
3300                    (int) (50 * scale + 0.5f));
3301            mPopup.setFocusable(false);
3302            // The user is entering text, so the input method is needed.  We
3303            // don't want the popup to be displayed on top of it.
3304            mPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED);
3305        }
3306
3307        TextView tv = (TextView) mPopup.getContentView();
3308        chooseSize(mPopup, mError, tv);
3309        tv.setText(mError);
3310
3311        mPopup.showAsDropDown(this, getErrorX(), getErrorY());
3312        mPopup.fixDirection(mPopup.isAboveAnchor());
3313    }
3314
3315    private static class ErrorPopup extends PopupWindow {
3316        private boolean mAbove = false;
3317        private TextView mView;
3318
3319        ErrorPopup(TextView v, int width, int height) {
3320            super(v, width, height);
3321            mView = v;
3322        }
3323
3324        void fixDirection(boolean above) {
3325            mAbove = above;
3326
3327            if (above) {
3328                mView.setBackgroundResource(com.android.internal.R.drawable.popup_inline_error_above);
3329            } else {
3330                mView.setBackgroundResource(com.android.internal.R.drawable.popup_inline_error);
3331            }
3332        }
3333
3334        @Override
3335        public void update(int x, int y, int w, int h, boolean force) {
3336            super.update(x, y, w, h, force);
3337
3338            boolean above = isAboveAnchor();
3339            if (above != mAbove) {
3340                fixDirection(above);
3341            }
3342        }
3343    }
3344
3345    /**
3346     * Returns the Y offset to make the pointy top of the error point
3347     * at the middle of the error icon.
3348     */
3349    private int getErrorX() {
3350        /*
3351         * The "25" is the distance between the point and the right edge
3352         * of the background
3353         */
3354        final float scale = getResources().getDisplayMetrics().density;
3355
3356        final Drawables dr = mDrawables;
3357        return getWidth() - mPopup.getWidth()
3358                - getPaddingRight()
3359                - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f);
3360    }
3361
3362    /**
3363     * Returns the Y offset to make the pointy top of the error point
3364     * at the bottom of the error icon.
3365     */
3366    private int getErrorY() {
3367        /*
3368         * Compound, not extended, because the icon is not clipped
3369         * if the text height is smaller.
3370         */
3371        int vspace = mBottom - mTop -
3372                     getCompoundPaddingBottom() - getCompoundPaddingTop();
3373
3374        final Drawables dr = mDrawables;
3375        int icontop = getCompoundPaddingTop()
3376                + (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2;
3377
3378        /*
3379         * The "2" is the distance between the point and the top edge
3380         * of the background.
3381         */
3382
3383        return icontop + (dr != null ? dr.mDrawableHeightRight : 0)
3384                - getHeight() - 2;
3385    }
3386
3387    private void hideError() {
3388        if (mPopup != null) {
3389            if (mPopup.isShowing()) {
3390                mPopup.dismiss();
3391            }
3392        }
3393
3394        mShowErrorAfterAttach = false;
3395    }
3396
3397    private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) {
3398        int wid = tv.getPaddingLeft() + tv.getPaddingRight();
3399        int ht = tv.getPaddingTop() + tv.getPaddingBottom();
3400
3401        /*
3402         * Figure out how big the text would be if we laid it out to the
3403         * full width of this view minus the border.
3404         */
3405        int cap = getWidth() - wid;
3406        if (cap < 0) {
3407            cap = 200; // We must not be measured yet -- setFrame() will fix it.
3408        }
3409
3410        Layout l = new StaticLayout(text, tv.getPaint(), cap,
3411                                    Layout.Alignment.ALIGN_NORMAL, 1, 0, true);
3412        float max = 0;
3413        for (int i = 0; i < l.getLineCount(); i++) {
3414            max = Math.max(max, l.getLineWidth(i));
3415        }
3416
3417        /*
3418         * Now set the popup size to be big enough for the text plus the border.
3419         */
3420        pop.setWidth(wid + (int) Math.ceil(max));
3421        pop.setHeight(ht + l.getHeight());
3422    }
3423
3424
3425    @Override
3426    protected boolean setFrame(int l, int t, int r, int b) {
3427        boolean result = super.setFrame(l, t, r, b);
3428
3429        if (mPopup != null) {
3430            TextView tv = (TextView) mPopup.getContentView();
3431            chooseSize(mPopup, mError, tv);
3432            mPopup.update(this, getErrorX(), getErrorY(),
3433                          mPopup.getWidth(), mPopup.getHeight());
3434        }
3435
3436        restartMarqueeIfNeeded();
3437
3438        return result;
3439    }
3440
3441    private void restartMarqueeIfNeeded() {
3442        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3443            mRestartMarquee = false;
3444            startMarquee();
3445        }
3446    }
3447
3448    /**
3449     * Sets the list of input filters that will be used if the buffer is
3450     * Editable.  Has no effect otherwise.
3451     *
3452     * @attr ref android.R.styleable#TextView_maxLength
3453     */
3454    public void setFilters(InputFilter[] filters) {
3455        if (filters == null) {
3456            throw new IllegalArgumentException();
3457        }
3458
3459        mFilters = filters;
3460
3461        if (mText instanceof Editable) {
3462            setFilters((Editable) mText, filters);
3463        }
3464    }
3465
3466    /**
3467     * Sets the list of input filters on the specified Editable,
3468     * and includes mInput in the list if it is an InputFilter.
3469     */
3470    private void setFilters(Editable e, InputFilter[] filters) {
3471        if (mInput instanceof InputFilter) {
3472            InputFilter[] nf = new InputFilter[filters.length + 1];
3473
3474            System.arraycopy(filters, 0, nf, 0, filters.length);
3475            nf[filters.length] = (InputFilter) mInput;
3476
3477            e.setFilters(nf);
3478        } else {
3479            e.setFilters(filters);
3480        }
3481    }
3482
3483    /**
3484     * Returns the current list of input filters.
3485     */
3486    public InputFilter[] getFilters() {
3487        return mFilters;
3488    }
3489
3490    /////////////////////////////////////////////////////////////////////////
3491
3492    private int getVerticalOffset(boolean forceNormal) {
3493        int voffset = 0;
3494        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3495
3496        Layout l = mLayout;
3497        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3498            l = mHintLayout;
3499        }
3500
3501        if (gravity != Gravity.TOP) {
3502            int boxht;
3503
3504            if (l == mHintLayout) {
3505                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3506                        getCompoundPaddingBottom();
3507            } else {
3508                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3509                        getExtendedPaddingBottom();
3510            }
3511            int textht = l.getHeight();
3512
3513            if (textht < boxht) {
3514                if (gravity == Gravity.BOTTOM)
3515                    voffset = boxht - textht;
3516                else // (gravity == Gravity.CENTER_VERTICAL)
3517                    voffset = (boxht - textht) >> 1;
3518            }
3519        }
3520        return voffset;
3521    }
3522
3523    private int getBottomVerticalOffset(boolean forceNormal) {
3524        int voffset = 0;
3525        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3526
3527        Layout l = mLayout;
3528        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3529            l = mHintLayout;
3530        }
3531
3532        if (gravity != Gravity.BOTTOM) {
3533            int boxht;
3534
3535            if (l == mHintLayout) {
3536                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3537                        getCompoundPaddingBottom();
3538            } else {
3539                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3540                        getExtendedPaddingBottom();
3541            }
3542            int textht = l.getHeight();
3543
3544            if (textht < boxht) {
3545                if (gravity == Gravity.TOP)
3546                    voffset = boxht - textht;
3547                else // (gravity == Gravity.CENTER_VERTICAL)
3548                    voffset = (boxht - textht) >> 1;
3549            }
3550        }
3551        return voffset;
3552    }
3553
3554    private void invalidateCursorPath() {
3555        if (mHighlightPathBogus) {
3556            invalidateCursor();
3557        } else {
3558            synchronized (sTempRect) {
3559                /*
3560                 * The reason for this concern about the thickness of the
3561                 * cursor and doing the floor/ceil on the coordinates is that
3562                 * some EditTexts (notably textfields in the Browser) have
3563                 * anti-aliased text where not all the characters are
3564                 * necessarily at integer-multiple locations.  This should
3565                 * make sure the entire cursor gets invalidated instead of
3566                 * sometimes missing half a pixel.
3567                 */
3568
3569                float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
3570                if (thick < 1.0f) {
3571                    thick = 1.0f;
3572                }
3573
3574                thick /= 2;
3575
3576                mHighlightPath.computeBounds(sTempRect, false);
3577
3578                int left = getCompoundPaddingLeft();
3579                int top = getExtendedPaddingTop() + getVerticalOffset(true);
3580
3581                invalidate((int) FloatMath.floor(left + sTempRect.left - thick),
3582                           (int) FloatMath.floor(top + sTempRect.top - thick),
3583                           (int) FloatMath.ceil(left + sTempRect.right + thick),
3584                           (int) FloatMath.ceil(top + sTempRect.bottom + thick));
3585            }
3586        }
3587    }
3588
3589    private void invalidateCursor() {
3590        int where = Selection.getSelectionEnd(mText);
3591
3592        invalidateCursor(where, where, where);
3593    }
3594
3595    private void invalidateCursor(int a, int b, int c) {
3596        if (mLayout == null) {
3597            invalidate();
3598        } else {
3599            if (a >= 0 || b >= 0 || c >= 0) {
3600                int first = Math.min(Math.min(a, b), c);
3601                int last = Math.max(Math.max(a, b), c);
3602
3603                int line = mLayout.getLineForOffset(first);
3604                int top = mLayout.getLineTop(line);
3605
3606                // This is ridiculous, but the descent from the line above
3607                // can hang down into the line we really want to redraw,
3608                // so we have to invalidate part of the line above to make
3609                // sure everything that needs to be redrawn really is.
3610                // (But not the whole line above, because that would cause
3611                // the same problem with the descenders on the line above it!)
3612                if (line > 0) {
3613                    top -= mLayout.getLineDescent(line - 1);
3614                }
3615
3616                int line2;
3617
3618                if (first == last)
3619                    line2 = line;
3620                else
3621                    line2 = mLayout.getLineForOffset(last);
3622
3623                int bottom = mLayout.getLineTop(line2 + 1);
3624                int voffset = getVerticalOffset(true);
3625
3626                int left = getCompoundPaddingLeft() + mScrollX;
3627                invalidate(left, top + voffset + getExtendedPaddingTop(),
3628                           left + getWidth() - getCompoundPaddingLeft() -
3629                           getCompoundPaddingRight(),
3630                           bottom + voffset + getExtendedPaddingTop());
3631            }
3632        }
3633    }
3634
3635    private void registerForPreDraw() {
3636        final ViewTreeObserver observer = getViewTreeObserver();
3637        if (observer == null) {
3638            return;
3639        }
3640
3641        if (mPreDrawState == PREDRAW_NOT_REGISTERED) {
3642            observer.addOnPreDrawListener(this);
3643            mPreDrawState = PREDRAW_PENDING;
3644        } else if (mPreDrawState == PREDRAW_DONE) {
3645            mPreDrawState = PREDRAW_PENDING;
3646        }
3647
3648        // else state is PREDRAW_PENDING, so keep waiting.
3649    }
3650
3651    /**
3652     * {@inheritDoc}
3653     */
3654    public boolean onPreDraw() {
3655        if (mPreDrawState != PREDRAW_PENDING) {
3656            return true;
3657        }
3658
3659        if (mLayout == null) {
3660            assumeLayout();
3661        }
3662
3663        boolean changed = false;
3664
3665        if (mMovement != null) {
3666            int curs = Selection.getSelectionEnd(mText);
3667
3668            /*
3669             * TODO: This should really only keep the end in view if
3670             * it already was before the text changed.  I'm not sure
3671             * of a good way to tell from here if it was.
3672             */
3673            if (curs < 0 &&
3674                  (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
3675                curs = mText.length();
3676            }
3677
3678            if (curs >= 0) {
3679                changed = bringPointIntoView(curs);
3680            }
3681        } else {
3682            changed = bringTextIntoView();
3683        }
3684
3685        mPreDrawState = PREDRAW_DONE;
3686        return !changed;
3687    }
3688
3689    @Override
3690    protected void onAttachedToWindow() {
3691        super.onAttachedToWindow();
3692
3693        mTemporaryDetach = false;
3694
3695        if (mShowErrorAfterAttach) {
3696            showError();
3697            mShowErrorAfterAttach = false;
3698        }
3699    }
3700
3701    @Override
3702    protected void onDetachedFromWindow() {
3703        super.onDetachedFromWindow();
3704
3705        if (mPreDrawState != PREDRAW_NOT_REGISTERED) {
3706            final ViewTreeObserver observer = getViewTreeObserver();
3707            if (observer != null) {
3708                observer.removeOnPreDrawListener(this);
3709                mPreDrawState = PREDRAW_NOT_REGISTERED;
3710            }
3711        }
3712
3713        if (mError != null) {
3714            hideError();
3715        }
3716    }
3717
3718    @Override
3719    protected boolean isPaddingOffsetRequired() {
3720        return mShadowRadius != 0 || mDrawables != null;
3721    }
3722
3723    @Override
3724    protected int getLeftPaddingOffset() {
3725        return getCompoundPaddingLeft() - mPaddingLeft +
3726                (int) Math.min(0, mShadowDx - mShadowRadius);
3727    }
3728
3729    @Override
3730    protected int getTopPaddingOffset() {
3731        return (int) Math.min(0, mShadowDy - mShadowRadius);
3732    }
3733
3734    @Override
3735    protected int getBottomPaddingOffset() {
3736        return (int) Math.max(0, mShadowDy + mShadowRadius);
3737    }
3738
3739    @Override
3740    protected int getRightPaddingOffset() {
3741        return -(getCompoundPaddingRight() - mPaddingRight) +
3742                (int) Math.max(0, mShadowDx + mShadowRadius);
3743    }
3744
3745    @Override
3746    protected boolean verifyDrawable(Drawable who) {
3747        final boolean verified = super.verifyDrawable(who);
3748        if (!verified && mDrawables != null) {
3749            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
3750                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom;
3751        }
3752        return verified;
3753    }
3754
3755    @Override
3756    public void invalidateDrawable(Drawable drawable) {
3757        if (verifyDrawable(drawable)) {
3758            final Rect dirty = drawable.getBounds();
3759            int scrollX = mScrollX;
3760            int scrollY = mScrollY;
3761
3762            // IMPORTANT: The coordinates below are based on the coordinates computed
3763            // for each compound drawable in onDraw(). Make sure to update each section
3764            // accordingly.
3765            final TextView.Drawables drawables = mDrawables;
3766            if (drawables != null) {
3767                if (drawable == drawables.mDrawableLeft) {
3768                    final int compoundPaddingTop = getCompoundPaddingTop();
3769                    final int compoundPaddingBottom = getCompoundPaddingBottom();
3770                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
3771
3772                    scrollX += mPaddingLeft;
3773                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
3774                } else if (drawable == drawables.mDrawableRight) {
3775                    final int compoundPaddingTop = getCompoundPaddingTop();
3776                    final int compoundPaddingBottom = getCompoundPaddingBottom();
3777                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
3778
3779                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
3780                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
3781                } else if (drawable == drawables.mDrawableTop) {
3782                    final int compoundPaddingLeft = getCompoundPaddingLeft();
3783                    final int compoundPaddingRight = getCompoundPaddingRight();
3784                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
3785
3786                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
3787                    scrollY += mPaddingTop;
3788                } else if (drawable == drawables.mDrawableBottom) {
3789                    final int compoundPaddingLeft = getCompoundPaddingLeft();
3790                    final int compoundPaddingRight = getCompoundPaddingRight();
3791                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
3792
3793                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
3794                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
3795                }
3796            }
3797
3798            invalidate(dirty.left + scrollX, dirty.top + scrollY,
3799                    dirty.right + scrollX, dirty.bottom + scrollY);
3800        }
3801    }
3802
3803    @Override
3804    protected void onDraw(Canvas canvas) {
3805        restartMarqueeIfNeeded();
3806
3807        // Draw the background for this view
3808        super.onDraw(canvas);
3809
3810        final int compoundPaddingLeft = getCompoundPaddingLeft();
3811        final int compoundPaddingTop = getCompoundPaddingTop();
3812        final int compoundPaddingRight = getCompoundPaddingRight();
3813        final int compoundPaddingBottom = getCompoundPaddingBottom();
3814        final int scrollX = mScrollX;
3815        final int scrollY = mScrollY;
3816        final int right = mRight;
3817        final int left = mLeft;
3818        final int bottom = mBottom;
3819        final int top = mTop;
3820
3821        final Drawables dr = mDrawables;
3822        if (dr != null) {
3823            /*
3824             * Compound, not extended, because the icon is not clipped
3825             * if the text height is smaller.
3826             */
3827
3828            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
3829            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
3830
3831            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3832            // Make sure to update invalidateDrawable() when changing this code.
3833            if (dr.mDrawableLeft != null) {
3834                canvas.save();
3835                canvas.translate(scrollX + mPaddingLeft,
3836                                 scrollY + compoundPaddingTop +
3837                                 (vspace - dr.mDrawableHeightLeft) / 2);
3838                dr.mDrawableLeft.draw(canvas);
3839                canvas.restore();
3840            }
3841
3842            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3843            // Make sure to update invalidateDrawable() when changing this code.
3844            if (dr.mDrawableRight != null) {
3845                canvas.save();
3846                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
3847                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
3848                dr.mDrawableRight.draw(canvas);
3849                canvas.restore();
3850            }
3851
3852            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3853            // Make sure to update invalidateDrawable() when changing this code.
3854            if (dr.mDrawableTop != null) {
3855                canvas.save();
3856                canvas.translate(scrollX + compoundPaddingLeft + (hspace - dr.mDrawableWidthTop) / 2,
3857                        scrollY + mPaddingTop);
3858                dr.mDrawableTop.draw(canvas);
3859                canvas.restore();
3860            }
3861
3862            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
3863            // Make sure to update invalidateDrawable() when changing this code.
3864            if (dr.mDrawableBottom != null) {
3865                canvas.save();
3866                canvas.translate(scrollX + compoundPaddingLeft +
3867                        (hspace - dr.mDrawableWidthBottom) / 2,
3868                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
3869                dr.mDrawableBottom.draw(canvas);
3870                canvas.restore();
3871            }
3872        }
3873
3874        if (mPreDrawState == PREDRAW_DONE) {
3875            final ViewTreeObserver observer = getViewTreeObserver();
3876            if (observer != null) {
3877                observer.removeOnPreDrawListener(this);
3878                mPreDrawState = PREDRAW_NOT_REGISTERED;
3879            }
3880        }
3881
3882        int color = mCurTextColor;
3883
3884        if (mLayout == null) {
3885            assumeLayout();
3886        }
3887
3888        Layout layout = mLayout;
3889        int cursorcolor = color;
3890
3891        if (mHint != null && mText.length() == 0) {
3892            if (mHintTextColor != null) {
3893                color = mCurHintTextColor;
3894            }
3895
3896            layout = mHintLayout;
3897        }
3898
3899        mTextPaint.setColor(color);
3900        mTextPaint.drawableState = getDrawableState();
3901
3902        canvas.save();
3903        /*  Would be faster if we didn't have to do this. Can we chop the
3904            (displayable) text so that we don't need to do this ever?
3905        */
3906
3907        int extendedPaddingTop = getExtendedPaddingTop();
3908        int extendedPaddingBottom = getExtendedPaddingBottom();
3909
3910        float clipLeft = compoundPaddingLeft + scrollX;
3911        float clipTop = extendedPaddingTop + scrollY;
3912        float clipRight = right - left - compoundPaddingRight + scrollX;
3913        float clipBottom = bottom - top - extendedPaddingBottom + scrollY;
3914
3915        if (mShadowRadius != 0) {
3916            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
3917            clipRight += Math.max(0, mShadowDx + mShadowRadius);
3918
3919            clipTop += Math.min(0, mShadowDy - mShadowRadius);
3920            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
3921        }
3922
3923        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
3924
3925        int voffsetText = 0;
3926        int voffsetCursor = 0;
3927
3928        // translate in by our padding
3929        {
3930            /* shortcircuit calling getVerticaOffset() */
3931            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
3932                voffsetText = getVerticalOffset(false);
3933                voffsetCursor = getVerticalOffset(true);
3934            }
3935            canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
3936        }
3937
3938        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3939            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
3940                    (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
3941                canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft -
3942                        getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f);
3943            }
3944
3945            if (mMarquee != null && mMarquee.isRunning()) {
3946                canvas.translate(-mMarquee.mScroll, 0.0f);
3947            }
3948        }
3949
3950        Path highlight = null;
3951        int selStart = -1, selEnd = -1;
3952
3953        //  If there is no movement method, then there can be no selection.
3954        //  Check that first and attempt to skip everything having to do with
3955        //  the cursor.
3956        //  XXX This is not strictly true -- a program could set the
3957        //  selection manually if it really wanted to.
3958        if (mMovement != null && (isFocused() || isPressed())) {
3959            selStart = Selection.getSelectionStart(mText);
3960            selEnd = Selection.getSelectionEnd(mText);
3961
3962            if (mCursorVisible && selStart >= 0 && isEnabled()) {
3963                if (mHighlightPath == null)
3964                    mHighlightPath = new Path();
3965
3966                if (selStart == selEnd) {
3967                    if ((SystemClock.uptimeMillis() - mShowCursor) % (2 * BLINK)
3968                        < BLINK) {
3969                        if (mHighlightPathBogus) {
3970                            mHighlightPath.reset();
3971                            mLayout.getCursorPath(selStart, mHighlightPath, mText);
3972                            mHighlightPathBogus = false;
3973                        }
3974
3975                        // XXX should pass to skin instead of drawing directly
3976                        mHighlightPaint.setColor(cursorcolor);
3977                        mHighlightPaint.setStyle(Paint.Style.STROKE);
3978
3979                        highlight = mHighlightPath;
3980                    }
3981                } else {
3982                    if (mHighlightPathBogus) {
3983                        mHighlightPath.reset();
3984                        mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
3985                        mHighlightPathBogus = false;
3986                    }
3987
3988                    // XXX should pass to skin instead of drawing directly
3989                    mHighlightPaint.setColor(mHighlightColor);
3990                    mHighlightPaint.setStyle(Paint.Style.FILL);
3991
3992                    highlight = mHighlightPath;
3993                }
3994            }
3995        }
3996
3997        /*  Comment out until we decide what to do about animations
3998        boolean isLinearTextOn = false;
3999        if (currentTransformation != null) {
4000            isLinearTextOn = mTextPaint.isLinearTextOn();
4001            Matrix m = currentTransformation.getMatrix();
4002            if (!m.isIdentity()) {
4003                // mTextPaint.setLinearTextOn(true);
4004            }
4005        }
4006        */
4007
4008        final InputMethodState ims = mInputMethodState;
4009        if (ims != null && ims.mBatchEditNesting == 0) {
4010            InputMethodManager imm = InputMethodManager.peekInstance();
4011            if (imm != null) {
4012                if (imm.isActive(this)) {
4013                    boolean reported = false;
4014                    if (ims.mContentChanged || ims.mSelectionModeChanged) {
4015                        // We are in extract mode and the content has changed
4016                        // in some way... just report complete new text to the
4017                        // input method.
4018                        reported = reportExtractedText();
4019                    }
4020                    if (!reported && highlight != null) {
4021                        int candStart = -1;
4022                        int candEnd = -1;
4023                        if (mText instanceof Spannable) {
4024                            Spannable sp = (Spannable)mText;
4025                            candStart = EditableInputConnection.getComposingSpanStart(sp);
4026                            candEnd = EditableInputConnection.getComposingSpanEnd(sp);
4027                        }
4028                        imm.updateSelection(this, selStart, selEnd, candStart, candEnd);
4029                    }
4030                }
4031
4032                if (imm.isWatchingCursor(this) && highlight != null) {
4033                    highlight.computeBounds(ims.mTmpRectF, true);
4034                    ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0;
4035
4036                    canvas.getMatrix().mapPoints(ims.mTmpOffset);
4037                    ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]);
4038
4039                    ims.mTmpRectF.offset(0, voffsetCursor - voffsetText);
4040
4041                    ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5),
4042                            (int)(ims.mTmpRectF.top + 0.5),
4043                            (int)(ims.mTmpRectF.right + 0.5),
4044                            (int)(ims.mTmpRectF.bottom + 0.5));
4045
4046                    imm.updateCursor(this,
4047                            ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top,
4048                            ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom);
4049                }
4050            }
4051        }
4052
4053        layout.draw(canvas, highlight, mHighlightPaint, voffsetCursor - voffsetText);
4054
4055        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
4056            canvas.translate((int) mMarquee.getGhostOffset(), 0.0f);
4057            layout.draw(canvas, highlight, mHighlightPaint, voffsetCursor - voffsetText);
4058        }
4059
4060        /*  Comment out until we decide what to do about animations
4061        if (currentTransformation != null) {
4062            mTextPaint.setLinearTextOn(isLinearTextOn);
4063        }
4064        */
4065
4066        canvas.restore();
4067    }
4068
4069    @Override
4070    public void getFocusedRect(Rect r) {
4071        if (mLayout == null) {
4072            super.getFocusedRect(r);
4073            return;
4074        }
4075
4076        int sel = getSelectionEnd();
4077        if (sel < 0) {
4078            super.getFocusedRect(r);
4079            return;
4080        }
4081
4082        int line = mLayout.getLineForOffset(sel);
4083        r.top = mLayout.getLineTop(line);
4084        r.bottom = mLayout.getLineBottom(line);
4085
4086        r.left = (int) mLayout.getPrimaryHorizontal(sel);
4087        r.right = r.left + 1;
4088
4089        // Adjust for padding and gravity.
4090        int paddingLeft = getCompoundPaddingLeft();
4091        int paddingTop = getExtendedPaddingTop();
4092        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4093            paddingTop += getVerticalOffset(false);
4094        }
4095        r.offset(paddingLeft, paddingTop);
4096    }
4097
4098    /**
4099     * Return the number of lines of text, or 0 if the internal Layout has not
4100     * been built.
4101     */
4102    public int getLineCount() {
4103        return mLayout != null ? mLayout.getLineCount() : 0;
4104    }
4105
4106    /**
4107     * Return the baseline for the specified line (0...getLineCount() - 1)
4108     * If bounds is not null, return the top, left, right, bottom extents
4109     * of the specified line in it. If the internal Layout has not been built,
4110     * return 0 and set bounds to (0, 0, 0, 0)
4111     * @param line which line to examine (0..getLineCount() - 1)
4112     * @param bounds Optional. If not null, it returns the extent of the line
4113     * @return the Y-coordinate of the baseline
4114     */
4115    public int getLineBounds(int line, Rect bounds) {
4116        if (mLayout == null) {
4117            if (bounds != null) {
4118                bounds.set(0, 0, 0, 0);
4119            }
4120            return 0;
4121        }
4122        else {
4123            int baseline = mLayout.getLineBounds(line, bounds);
4124
4125            int voffset = getExtendedPaddingTop();
4126            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4127                voffset += getVerticalOffset(true);
4128            }
4129            if (bounds != null) {
4130                bounds.offset(getCompoundPaddingLeft(), voffset);
4131            }
4132            return baseline + voffset;
4133        }
4134    }
4135
4136    @Override
4137    public int getBaseline() {
4138        if (mLayout == null) {
4139            return super.getBaseline();
4140        }
4141
4142        int voffset = 0;
4143        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4144            voffset = getVerticalOffset(true);
4145        }
4146
4147        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
4148    }
4149
4150    @Override
4151    public boolean onKeyDown(int keyCode, KeyEvent event) {
4152        int which = doKeyDown(keyCode, event, null);
4153        if (which == 0) {
4154            // Go through default dispatching.
4155            return super.onKeyDown(keyCode, event);
4156        }
4157
4158        return true;
4159    }
4160
4161    @Override
4162    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
4163        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
4164
4165        int which = doKeyDown(keyCode, down, event);
4166        if (which == 0) {
4167            // Go through default dispatching.
4168            return super.onKeyMultiple(keyCode, repeatCount, event);
4169        }
4170        if (which == -1) {
4171            // Consumed the whole thing.
4172            return true;
4173        }
4174
4175        repeatCount--;
4176
4177        // We are going to dispatch the remaining events to either the input
4178        // or movement method.  To do this, we will just send a repeated stream
4179        // of down and up events until we have done the complete repeatCount.
4180        // It would be nice if those interfaces had an onKeyMultiple() method,
4181        // but adding that is a more complicated change.
4182        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
4183        if (which == 1) {
4184            mInput.onKeyUp(this, (Editable)mText, keyCode, up);
4185            while (--repeatCount > 0) {
4186                mInput.onKeyDown(this, (Editable)mText, keyCode, down);
4187                mInput.onKeyUp(this, (Editable)mText, keyCode, up);
4188            }
4189            if (mError != null && !mErrorWasChanged) {
4190                setError(null, null);
4191            }
4192
4193        } else if (which == 2) {
4194            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4195            while (--repeatCount > 0) {
4196                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
4197                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4198            }
4199        }
4200
4201        return true;
4202    }
4203
4204    /**
4205     * Returns true if pressing ENTER in this field advances focus instead
4206     * of inserting the character.  This is true mostly in single-line fields,
4207     * but also in mail addresses and subjects which will display on multiple
4208     * lines but where it doesn't make sense to insert newlines.
4209     */
4210    private boolean shouldAdvanceFocusOnEnter() {
4211        if (mInput == null) {
4212            return false;
4213        }
4214
4215        if (mSingleLine) {
4216            return true;
4217        }
4218
4219        if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
4220            int variation = mInputType & EditorInfo.TYPE_MASK_VARIATION;
4221
4222            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS ||
4223                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
4224                return true;
4225            }
4226        }
4227
4228        return false;
4229    }
4230
4231    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
4232        if (!isEnabled()) {
4233            return 0;
4234        }
4235
4236        switch (keyCode) {
4237            case KeyEvent.KEYCODE_ENTER:
4238                // If ALT modifier is held, then we always insert a
4239                // newline character.
4240                if ((event.getMetaState()&KeyEvent.META_ALT_ON) == 0) {
4241
4242                    // When mInputContentType is set, we know that we are
4243                    // running in a "modern" cupcake environment, so don't need
4244                    // to worry about the application trying to capture
4245                    // enter key events.
4246                    if (mInputContentType != null) {
4247
4248                        // If there is an action listener, given them a
4249                        // chance to consume the event.
4250                        if (mInputContentType.onEditorActionListener != null &&
4251                                mInputContentType.onEditorActionListener.onEditorAction(
4252                                this, EditorInfo.IME_NULL, event)) {
4253                            mInputContentType.enterDown = true;
4254                            // We are consuming the enter key for them.
4255                            return -1;
4256                        }
4257                    }
4258
4259                    // If our editor should move focus when enter is pressed, or
4260                    // this is a generated event from an IME action button, then
4261                    // don't let it be inserted into the text.
4262                    if ((event.getFlags()&KeyEvent.FLAG_EDITOR_ACTION) != 0
4263                            || shouldAdvanceFocusOnEnter()) {
4264                        return -1;
4265                    }
4266                }
4267                break;
4268
4269            case KeyEvent.KEYCODE_DPAD_CENTER:
4270                if (shouldAdvanceFocusOnEnter()) {
4271                    return 0;
4272                }
4273        }
4274
4275        if (mInput != null) {
4276            /*
4277             * Keep track of what the error was before doing the input
4278             * so that if an input filter changed the error, we leave
4279             * that error showing.  Otherwise, we take down whatever
4280             * error was showing when the user types something.
4281             */
4282            mErrorWasChanged = false;
4283
4284            boolean doDown = true;
4285            if (otherEvent != null) {
4286                try {
4287                    beginBatchEdit();
4288                    boolean handled = mInput.onKeyOther(this, (Editable) mText,
4289                            otherEvent);
4290                    if (mError != null && !mErrorWasChanged) {
4291                        setError(null, null);
4292                    }
4293                    doDown = false;
4294                    if (handled) {
4295                        return -1;
4296                    }
4297                } catch (AbstractMethodError e) {
4298                    // onKeyOther was added after 1.0, so if it isn't
4299                    // implemented we need to try to dispatch as a regular down.
4300                } finally {
4301                    endBatchEdit();
4302                }
4303            }
4304
4305            if (doDown) {
4306                beginBatchEdit();
4307                if (mInput.onKeyDown(this, (Editable) mText, keyCode, event)) {
4308                    endBatchEdit();
4309                    if (mError != null && !mErrorWasChanged) {
4310                        setError(null, null);
4311                    }
4312                    return 1;
4313                }
4314                endBatchEdit();
4315            }
4316        }
4317
4318        // bug 650865: sometimes we get a key event before a layout.
4319        // don't try to move around if we don't know the layout.
4320
4321        if (mMovement != null && mLayout != null) {
4322            boolean doDown = true;
4323            if (otherEvent != null) {
4324                try {
4325                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
4326                            otherEvent);
4327                    doDown = false;
4328                    if (handled) {
4329                        return -1;
4330                    }
4331                } catch (AbstractMethodError e) {
4332                    // onKeyOther was added after 1.0, so if it isn't
4333                    // implemented we need to try to dispatch as a regular down.
4334                }
4335            }
4336            if (doDown) {
4337                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
4338                    return 2;
4339            }
4340        }
4341
4342        return 0;
4343    }
4344
4345    @Override
4346    public boolean onKeyUp(int keyCode, KeyEvent event) {
4347        if (!isEnabled()) {
4348            return super.onKeyUp(keyCode, event);
4349        }
4350
4351        switch (keyCode) {
4352            case KeyEvent.KEYCODE_DPAD_CENTER:
4353                /*
4354                 * If there is a click listener, just call through to
4355                 * super, which will invoke it.
4356                 *
4357                 * If there isn't a click listener, try to show the soft
4358                 * input method.  (It will also
4359                 * call performClick(), but that won't do anything in
4360                 * this case.)
4361                 */
4362                if (mOnClickListener == null) {
4363                    if (mMovement != null && mText instanceof Editable
4364                            && mLayout != null && onCheckIsTextEditor()) {
4365                        InputMethodManager imm = (InputMethodManager)
4366                                getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
4367                        imm.showSoftInput(this, 0);
4368                    }
4369                }
4370                return super.onKeyUp(keyCode, event);
4371
4372            case KeyEvent.KEYCODE_ENTER:
4373                if (mInputContentType != null
4374                        && mInputContentType.onEditorActionListener != null
4375                        && mInputContentType.enterDown) {
4376                    mInputContentType.enterDown = false;
4377                    if (mInputContentType.onEditorActionListener.onEditorAction(
4378                            this, EditorInfo.IME_NULL, event)) {
4379                        return true;
4380                    }
4381                }
4382
4383                if ((event.getFlags()&KeyEvent.FLAG_EDITOR_ACTION) != 0
4384                        || shouldAdvanceFocusOnEnter()) {
4385                    /*
4386                     * If there is a click listener, just call through to
4387                     * super, which will invoke it.
4388                     *
4389                     * If there isn't a click listener, try to advance focus,
4390                     * but still call through to super, which will reset the
4391                     * pressed state and longpress state.  (It will also
4392                     * call performClick(), but that won't do anything in
4393                     * this case.)
4394                     */
4395                    if (mOnClickListener == null) {
4396                        View v = focusSearch(FOCUS_DOWN);
4397
4398                        if (v != null) {
4399                            if (!v.requestFocus(FOCUS_DOWN)) {
4400                                throw new IllegalStateException("focus search returned a view " +
4401                                        "that wasn't able to take focus!");
4402                            }
4403
4404                            /*
4405                             * Return true because we handled the key; super
4406                             * will return false because there was no click
4407                             * listener.
4408                             */
4409                            super.onKeyUp(keyCode, event);
4410                            return true;
4411                        } else if ((event.getFlags()
4412                                & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
4413                            // No target for next focus, but make sure the IME
4414                            // if this came from it.
4415                            InputMethodManager imm = InputMethodManager.peekInstance();
4416                            if (imm != null) {
4417                                imm.hideSoftInputFromWindow(getWindowToken(), 0);
4418                            }
4419                        }
4420                    }
4421
4422                    return super.onKeyUp(keyCode, event);
4423                }
4424        }
4425
4426        if (mInput != null)
4427            if (mInput.onKeyUp(this, (Editable) mText, keyCode, event))
4428                return true;
4429
4430        if (mMovement != null && mLayout != null)
4431            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
4432                return true;
4433
4434        return super.onKeyUp(keyCode, event);
4435    }
4436
4437    @Override public boolean onCheckIsTextEditor() {
4438        return mInputType != EditorInfo.TYPE_NULL;
4439    }
4440
4441    @Override public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
4442        if (onCheckIsTextEditor()) {
4443            if (mInputMethodState == null) {
4444                mInputMethodState = new InputMethodState();
4445            }
4446            outAttrs.inputType = mInputType;
4447            if (mInputContentType != null) {
4448                outAttrs.imeOptions = mInputContentType.imeOptions;
4449                outAttrs.privateImeOptions = mInputContentType.privateImeOptions;
4450                outAttrs.actionLabel = mInputContentType.imeActionLabel;
4451                outAttrs.actionId = mInputContentType.imeActionId;
4452                outAttrs.extras = mInputContentType.extras;
4453            } else {
4454                outAttrs.imeOptions = EditorInfo.IME_NULL;
4455            }
4456            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
4457                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
4458                if (focusSearch(FOCUS_DOWN) != null) {
4459                    // An action has not been set, but the enter key will move to
4460                    // the next focus, so set the action to that.
4461                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
4462                } else {
4463                    // An action has not been set, and there is no focus to move
4464                    // to, so let's just supply a "done" action.
4465                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
4466                }
4467                if (!shouldAdvanceFocusOnEnter()) {
4468                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
4469                }
4470            }
4471            if ((outAttrs.inputType & (InputType.TYPE_MASK_CLASS
4472                    | InputType.TYPE_TEXT_FLAG_MULTI_LINE))
4473                    == (InputType.TYPE_CLASS_TEXT
4474                            | InputType.TYPE_TEXT_FLAG_MULTI_LINE)) {
4475                // Multi-line text editors should always show an enter key.
4476                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
4477            }
4478            outAttrs.hintText = mHint;
4479            if (mText instanceof Editable) {
4480                InputConnection ic = new EditableInputConnection(this);
4481                outAttrs.initialSelStart = Selection.getSelectionStart(mText);
4482                outAttrs.initialSelEnd = Selection.getSelectionEnd(mText);
4483                outAttrs.initialCapsMode = ic.getCursorCapsMode(mInputType);
4484                return ic;
4485            }
4486        }
4487        return null;
4488    }
4489
4490    /**
4491     * If this TextView contains editable content, extract a portion of it
4492     * based on the information in <var>request</var> in to <var>outText</var>.
4493     * @return Returns true if the text was successfully extracted, else false.
4494     */
4495    public boolean extractText(ExtractedTextRequest request,
4496            ExtractedText outText) {
4497        return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN,
4498                EXTRACT_UNKNOWN, outText);
4499    }
4500
4501    static final int EXTRACT_NOTHING = -2;
4502    static final int EXTRACT_UNKNOWN = -1;
4503
4504    boolean extractTextInternal(ExtractedTextRequest request,
4505            int partialStartOffset, int partialEndOffset, int delta,
4506            ExtractedText outText) {
4507        final CharSequence content = mText;
4508        if (content != null) {
4509            if (partialStartOffset != EXTRACT_NOTHING) {
4510                final int N = content.length();
4511                if (partialStartOffset < 0) {
4512                    outText.partialStartOffset = outText.partialEndOffset = -1;
4513                    partialStartOffset = 0;
4514                    partialEndOffset = N;
4515                } else {
4516                    // Adjust offsets to ensure we contain full spans.
4517                    if (content instanceof Spanned) {
4518                        Spanned spanned = (Spanned)content;
4519                        Object[] spans = spanned.getSpans(partialStartOffset,
4520                                partialEndOffset, ParcelableSpan.class);
4521                        int i = spans.length;
4522                        while (i > 0) {
4523                            i--;
4524                            int j = spanned.getSpanStart(spans[i]);
4525                            if (j < partialStartOffset) partialStartOffset = j;
4526                            j = spanned.getSpanEnd(spans[i]);
4527                            if (j > partialEndOffset) partialEndOffset = j;
4528                        }
4529                    }
4530                    outText.partialStartOffset = partialStartOffset;
4531                    outText.partialEndOffset = partialEndOffset;
4532                    // Now use the delta to determine the actual amount of text
4533                    // we need.
4534                    partialEndOffset += delta;
4535                    if (partialEndOffset > N) {
4536                        partialEndOffset = N;
4537                    } else if (partialEndOffset < 0) {
4538                        partialEndOffset = 0;
4539                    }
4540                }
4541                if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) {
4542                    outText.text = content.subSequence(partialStartOffset,
4543                            partialEndOffset);
4544                } else {
4545                    outText.text = TextUtils.substring(content, partialStartOffset,
4546                            partialEndOffset);
4547                }
4548            }
4549            outText.flags = 0;
4550            if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) {
4551                outText.flags |= ExtractedText.FLAG_SELECTING;
4552            }
4553            if (mSingleLine) {
4554                outText.flags |= ExtractedText.FLAG_SINGLE_LINE;
4555            }
4556            outText.startOffset = 0;
4557            outText.selectionStart = Selection.getSelectionStart(content);
4558            outText.selectionEnd = Selection.getSelectionEnd(content);
4559            return true;
4560        }
4561        return false;
4562    }
4563
4564    boolean reportExtractedText() {
4565        final InputMethodState ims = mInputMethodState;
4566        if (ims != null) {
4567            final boolean contentChanged = ims.mContentChanged;
4568            if (contentChanged || ims.mSelectionModeChanged) {
4569                ims.mContentChanged = false;
4570                ims.mSelectionModeChanged = false;
4571                final ExtractedTextRequest req = mInputMethodState.mExtracting;
4572                if (req != null) {
4573                    InputMethodManager imm = InputMethodManager.peekInstance();
4574                    if (imm != null) {
4575                        if (DEBUG_EXTRACT) Log.v(TAG, "Retrieving extracted start="
4576                                + ims.mChangedStart + " end=" + ims.mChangedEnd
4577                                + " delta=" + ims.mChangedDelta);
4578                        if (ims.mChangedStart < 0 && !contentChanged) {
4579                            ims.mChangedStart = EXTRACT_NOTHING;
4580                        }
4581                        if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd,
4582                                ims.mChangedDelta, ims.mTmpExtracted)) {
4583                            if (DEBUG_EXTRACT) Log.v(TAG, "Reporting extracted start="
4584                                    + ims.mTmpExtracted.partialStartOffset
4585                                    + " end=" + ims.mTmpExtracted.partialEndOffset
4586                                    + ": " + ims.mTmpExtracted.text);
4587                            imm.updateExtractedText(this, req.token,
4588                                    mInputMethodState.mTmpExtracted);
4589                            return true;
4590                        }
4591                    }
4592                }
4593            }
4594        }
4595        return false;
4596    }
4597
4598    /**
4599     * This is used to remove all style-impacting spans from text before new
4600     * extracted text is being replaced into it, so that we don't have any
4601     * lingering spans applied during the replace.
4602     */
4603    static void removeParcelableSpans(Spannable spannable, int start, int end) {
4604        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
4605        int i = spans.length;
4606        while (i > 0) {
4607            i--;
4608            spannable.removeSpan(spans[i]);
4609        }
4610    }
4611
4612    /**
4613     * Apply to this text view the given extracted text, as previously
4614     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
4615     */
4616    public void setExtractedText(ExtractedText text) {
4617        Editable content = getEditableText();
4618        if (text.text != null) {
4619            if (content == null) {
4620                setText(text.text, TextView.BufferType.EDITABLE);
4621            } else if (text.partialStartOffset < 0) {
4622                removeParcelableSpans(content, 0, content.length());
4623                content.replace(0, content.length(), text.text);
4624            } else {
4625                final int N = content.length();
4626                int start = text.partialStartOffset;
4627                if (start > N) start = N;
4628                int end = text.partialEndOffset;
4629                if (end > N) end = N;
4630                removeParcelableSpans(content, start, end);
4631                content.replace(start, end, text.text);
4632            }
4633        }
4634
4635        // Now set the selection position...  make sure it is in range, to
4636        // avoid crashes.  If this is a partial update, it is possible that
4637        // the underlying text may have changed, causing us problems here.
4638        // Also we just don't want to trust clients to do the right thing.
4639        Spannable sp = (Spannable)getText();
4640        final int N = sp.length();
4641        int start = text.selectionStart;
4642        if (start < 0) start = 0;
4643        else if (start > N) start = N;
4644        int end = text.selectionEnd;
4645        if (end < 0) end = 0;
4646        else if (end > N) end = N;
4647        Selection.setSelection(sp, start, end);
4648
4649        // Finally, update the selection mode.
4650        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
4651            MetaKeyKeyListener.startSelecting(this, sp);
4652        } else {
4653            MetaKeyKeyListener.stopSelecting(this, sp);
4654        }
4655    }
4656
4657    /**
4658     * @hide
4659     */
4660    public void setExtracting(ExtractedTextRequest req) {
4661        if (mInputMethodState != null) {
4662            mInputMethodState.mExtracting = req;
4663        }
4664    }
4665
4666    /**
4667     * Called by the framework in response to a text completion from
4668     * the current input method, provided by it calling
4669     * {@link InputConnection#commitCompletion
4670     * InputConnection.commitCompletion()}.  The default implementation does
4671     * nothing; text views that are supporting auto-completion should override
4672     * this to do their desired behavior.
4673     *
4674     * @param text The auto complete text the user has selected.
4675     */
4676    public void onCommitCompletion(CompletionInfo text) {
4677    }
4678
4679    public void beginBatchEdit() {
4680        final InputMethodState ims = mInputMethodState;
4681        if (ims != null) {
4682            int nesting = ++ims.mBatchEditNesting;
4683            if (nesting == 1) {
4684                ims.mCursorChanged = false;
4685                ims.mChangedDelta = 0;
4686                if (ims.mContentChanged) {
4687                    // We already have a pending change from somewhere else,
4688                    // so turn this into a full update.
4689                    ims.mChangedStart = 0;
4690                    ims.mChangedEnd = mText.length();
4691                } else {
4692                    ims.mChangedStart = EXTRACT_UNKNOWN;
4693                    ims.mChangedEnd = EXTRACT_UNKNOWN;
4694                    ims.mContentChanged = false;
4695                }
4696                onBeginBatchEdit();
4697            }
4698        }
4699    }
4700
4701    public void endBatchEdit() {
4702        final InputMethodState ims = mInputMethodState;
4703        if (ims != null) {
4704            int nesting = --ims.mBatchEditNesting;
4705            if (nesting == 0) {
4706                finishBatchEdit(ims);
4707            }
4708        }
4709    }
4710
4711    void ensureEndedBatchEdit() {
4712        final InputMethodState ims = mInputMethodState;
4713        if (ims != null && ims.mBatchEditNesting != 0) {
4714            ims.mBatchEditNesting = 0;
4715            finishBatchEdit(ims);
4716        }
4717    }
4718
4719    void finishBatchEdit(final InputMethodState ims) {
4720        onEndBatchEdit();
4721
4722        if (ims.mContentChanged || ims.mSelectionModeChanged) {
4723            updateAfterEdit();
4724            reportExtractedText();
4725        } else if (ims.mCursorChanged) {
4726            // Cheezy way to get us to report the current cursor location.
4727            invalidateCursor();
4728        }
4729    }
4730
4731    void updateAfterEdit() {
4732        invalidate();
4733        int curs = Selection.getSelectionStart(mText);
4734
4735        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) ==
4736                             Gravity.BOTTOM) {
4737            registerForPreDraw();
4738        }
4739
4740        if (curs >= 0) {
4741            mHighlightPathBogus = true;
4742
4743            if (isFocused()) {
4744                mShowCursor = SystemClock.uptimeMillis();
4745                makeBlink();
4746            }
4747        }
4748
4749        checkForResize();
4750    }
4751
4752    /**
4753     * Called by the framework in response to a request to begin a batch
4754     * of edit operations through a call to link {@link #beginBatchEdit()}.
4755     */
4756    public void onBeginBatchEdit() {
4757    }
4758
4759    /**
4760     * Called by the framework in response to a request to end a batch
4761     * of edit operations through a call to link {@link #endBatchEdit}.
4762     */
4763    public void onEndBatchEdit() {
4764    }
4765
4766    /**
4767     * Called by the framework in response to a private command from the
4768     * current method, provided by it calling
4769     * {@link InputConnection#performPrivateCommand
4770     * InputConnection.performPrivateCommand()}.
4771     *
4772     * @param action The action name of the command.
4773     * @param data Any additional data for the command.  This may be null.
4774     * @return Return true if you handled the command, else false.
4775     */
4776    public boolean onPrivateIMECommand(String action, Bundle data) {
4777        return false;
4778    }
4779
4780    private void nullLayouts() {
4781        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
4782            mSavedLayout = (BoringLayout) mLayout;
4783        }
4784        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
4785            mSavedHintLayout = (BoringLayout) mHintLayout;
4786        }
4787
4788        mLayout = mHintLayout = null;
4789    }
4790
4791    /**
4792     * Make a new Layout based on the already-measured size of the view,
4793     * on the assumption that it was measured correctly at some point.
4794     */
4795    private void assumeLayout() {
4796        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
4797
4798        if (width < 1) {
4799            width = 0;
4800        }
4801
4802        int physicalWidth = width;
4803
4804        if (mHorizontallyScrolling) {
4805            width = VERY_WIDE;
4806        }
4807
4808        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
4809                      physicalWidth, false);
4810    }
4811
4812    /**
4813     * The width passed in is now the desired layout width,
4814     * not the full view width with padding.
4815     * {@hide}
4816     */
4817    protected void makeNewLayout(int w, int hintWidth,
4818                                 BoringLayout.Metrics boring,
4819                                 BoringLayout.Metrics hintBoring,
4820                                 int ellipsisWidth, boolean bringIntoView) {
4821        stopMarquee();
4822
4823        mHighlightPathBogus = true;
4824
4825        if (w < 0) {
4826            w = 0;
4827        }
4828        if (hintWidth < 0) {
4829            hintWidth = 0;
4830        }
4831
4832        Layout.Alignment alignment;
4833        switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
4834            case Gravity.CENTER_HORIZONTAL:
4835                alignment = Layout.Alignment.ALIGN_CENTER;
4836                break;
4837
4838            case Gravity.RIGHT:
4839                alignment = Layout.Alignment.ALIGN_OPPOSITE;
4840                break;
4841
4842            default:
4843                alignment = Layout.Alignment.ALIGN_NORMAL;
4844        }
4845
4846        boolean shouldEllipsize = mEllipsize != null && mInput == null;
4847
4848        if (mText instanceof Spannable) {
4849            mLayout = new DynamicLayout(mText, mTransformed, mTextPaint, w,
4850                    alignment, mSpacingMult,
4851                    mSpacingAdd, mIncludePad, mInput == null ? mEllipsize : null,
4852                    ellipsisWidth);
4853        } else {
4854            if (boring == UNKNOWN_BORING) {
4855                boring = BoringLayout.isBoring(mTransformed, mTextPaint,
4856                                               mBoring);
4857                if (boring != null) {
4858                    mBoring = boring;
4859                }
4860            }
4861
4862            if (boring != null) {
4863                if (boring.width <= w &&
4864                    (mEllipsize == null || boring.width <= ellipsisWidth)) {
4865                    if (mSavedLayout != null) {
4866                        mLayout = mSavedLayout.
4867                                replaceOrMake(mTransformed, mTextPaint,
4868                                w, alignment, mSpacingMult, mSpacingAdd,
4869                                boring, mIncludePad);
4870                    } else {
4871                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
4872                                w, alignment, mSpacingMult, mSpacingAdd,
4873                                boring, mIncludePad);
4874                    }
4875                    // Log.e("aaa", "Boring: " + mTransformed);
4876
4877                    mSavedLayout = (BoringLayout) mLayout;
4878                } else if (shouldEllipsize && boring.width <= w) {
4879                    if (mSavedLayout != null) {
4880                        mLayout = mSavedLayout.
4881                                replaceOrMake(mTransformed, mTextPaint,
4882                                w, alignment, mSpacingMult, mSpacingAdd,
4883                                boring, mIncludePad, mEllipsize,
4884                                ellipsisWidth);
4885                    } else {
4886                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
4887                                w, alignment, mSpacingMult, mSpacingAdd,
4888                                boring, mIncludePad, mEllipsize,
4889                                ellipsisWidth);
4890                    }
4891                } else if (shouldEllipsize) {
4892                    mLayout = new StaticLayout(mTransformed,
4893                                0, mTransformed.length(),
4894                                mTextPaint, w, alignment, mSpacingMult,
4895                                mSpacingAdd, mIncludePad, mEllipsize,
4896                                ellipsisWidth);
4897                } else {
4898                    mLayout = new StaticLayout(mTransformed, mTextPaint,
4899                            w, alignment, mSpacingMult, mSpacingAdd,
4900                            mIncludePad);
4901                    // Log.e("aaa", "Boring but wide: " + mTransformed);
4902                }
4903            } else if (shouldEllipsize) {
4904                mLayout = new StaticLayout(mTransformed,
4905                            0, mTransformed.length(),
4906                            mTextPaint, w, alignment, mSpacingMult,
4907                            mSpacingAdd, mIncludePad, mEllipsize,
4908                            ellipsisWidth);
4909            } else {
4910                mLayout = new StaticLayout(mTransformed, mTextPaint,
4911                        w, alignment, mSpacingMult, mSpacingAdd,
4912                        mIncludePad);
4913            }
4914        }
4915
4916        shouldEllipsize = mEllipsize != null;
4917        mHintLayout = null;
4918
4919        if (mHint != null) {
4920            if (shouldEllipsize) hintWidth = w;
4921
4922            if (hintBoring == UNKNOWN_BORING) {
4923                hintBoring = BoringLayout.isBoring(mHint, mTextPaint,
4924                                                   mHintBoring);
4925                if (hintBoring != null) {
4926                    mHintBoring = hintBoring;
4927                }
4928            }
4929
4930            if (hintBoring != null) {
4931                if (hintBoring.width <= hintWidth &&
4932                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
4933                    if (mSavedHintLayout != null) {
4934                        mHintLayout = mSavedHintLayout.
4935                                replaceOrMake(mHint, mTextPaint,
4936                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
4937                                hintBoring, mIncludePad);
4938                    } else {
4939                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
4940                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
4941                                hintBoring, mIncludePad);
4942                    }
4943
4944                    mSavedHintLayout = (BoringLayout) mHintLayout;
4945                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
4946                    if (mSavedHintLayout != null) {
4947                        mHintLayout = mSavedHintLayout.
4948                                replaceOrMake(mHint, mTextPaint,
4949                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
4950                                hintBoring, mIncludePad, mEllipsize,
4951                                ellipsisWidth);
4952                    } else {
4953                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
4954                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
4955                                hintBoring, mIncludePad, mEllipsize,
4956                                ellipsisWidth);
4957                    }
4958                } else if (shouldEllipsize) {
4959                    mHintLayout = new StaticLayout(mHint,
4960                                0, mHint.length(),
4961                                mTextPaint, hintWidth, alignment, mSpacingMult,
4962                                mSpacingAdd, mIncludePad, mEllipsize,
4963                                ellipsisWidth);
4964                } else {
4965                    mHintLayout = new StaticLayout(mHint, mTextPaint,
4966                            hintWidth, alignment, mSpacingMult, mSpacingAdd,
4967                            mIncludePad);
4968                }
4969            } else if (shouldEllipsize) {
4970                mHintLayout = new StaticLayout(mHint,
4971                            0, mHint.length(),
4972                            mTextPaint, hintWidth, alignment, mSpacingMult,
4973                            mSpacingAdd, mIncludePad, mEllipsize,
4974                            ellipsisWidth);
4975            } else {
4976                mHintLayout = new StaticLayout(mHint, mTextPaint,
4977                        hintWidth, alignment, mSpacingMult, mSpacingAdd,
4978                        mIncludePad);
4979            }
4980        }
4981
4982        if (bringIntoView) {
4983            registerForPreDraw();
4984        }
4985
4986        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4987            if (!compressText(ellipsisWidth)) {
4988                final int height = mLayoutParams.height;
4989                // If the size of the view does not depend on the size of the text, try to
4990                // start the marquee immediately
4991                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.FILL_PARENT) {
4992                    startMarquee();
4993                } else {
4994                    // Defer the start of the marquee until we know our width (see setFrame())
4995                    mRestartMarquee = true;
4996                }
4997            }
4998        }
4999    }
5000
5001    private boolean compressText(float width) {
5002        // Only compress the text if it hasn't been compressed by the previous pass
5003        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
5004                mTextPaint.getTextScaleX() == 1.0f) {
5005            final float textWidth = mLayout.getLineWidth(0);
5006            final float overflow = (textWidth + 1.0f - width) / width;
5007            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
5008                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
5009                post(new Runnable() {
5010                    public void run() {
5011                        requestLayout();
5012                    }
5013                });
5014                return true;
5015            }
5016        }
5017
5018        return false;
5019    }
5020
5021    private static int desired(Layout layout) {
5022        int n = layout.getLineCount();
5023        CharSequence text = layout.getText();
5024        float max = 0;
5025
5026        // if any line was wrapped, we can't use it.
5027        // but it's ok for the last line not to have a newline
5028
5029        for (int i = 0; i < n - 1; i++) {
5030            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
5031                return -1;
5032        }
5033
5034        for (int i = 0; i < n; i++) {
5035            max = Math.max(max, layout.getLineWidth(i));
5036        }
5037
5038        return (int) FloatMath.ceil(max);
5039    }
5040
5041    /**
5042     * Set whether the TextView includes extra top and bottom padding to make
5043     * room for accents that go above the normal ascent and descent.
5044     * The default is true.
5045     *
5046     * @attr ref android.R.styleable#TextView_includeFontPadding
5047     */
5048    public void setIncludeFontPadding(boolean includepad) {
5049        mIncludePad = includepad;
5050
5051        if (mLayout != null) {
5052            nullLayouts();
5053            requestLayout();
5054            invalidate();
5055        }
5056    }
5057
5058    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
5059
5060    @Override
5061    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
5062        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
5063        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
5064        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
5065        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
5066
5067        int width;
5068        int height;
5069
5070        BoringLayout.Metrics boring = UNKNOWN_BORING;
5071        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
5072
5073        int des = -1;
5074        boolean fromexisting = false;
5075
5076        if (widthMode == MeasureSpec.EXACTLY) {
5077            // Parent has told us how big to be. So be it.
5078            width = widthSize;
5079        } else {
5080            if (mLayout != null && mEllipsize == null) {
5081                des = desired(mLayout);
5082            }
5083
5084            if (des < 0) {
5085                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mBoring);
5086                if (boring != null) {
5087                    mBoring = boring;
5088                }
5089            } else {
5090                fromexisting = true;
5091            }
5092
5093            if (boring == null || boring == UNKNOWN_BORING) {
5094                if (des < 0) {
5095                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
5096                }
5097
5098                width = des;
5099            } else {
5100                width = boring.width;
5101            }
5102
5103            final Drawables dr = mDrawables;
5104            if (dr != null) {
5105                width = Math.max(width, dr.mDrawableWidthTop);
5106                width = Math.max(width, dr.mDrawableWidthBottom);
5107            }
5108
5109            if (mHint != null) {
5110                int hintDes = -1;
5111                int hintWidth;
5112
5113                if (mHintLayout != null && mEllipsize == null) {
5114                    hintDes = desired(mHintLayout);
5115                }
5116
5117                if (hintDes < 0) {
5118                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mHintBoring);
5119                    if (hintBoring != null) {
5120                        mHintBoring = hintBoring;
5121                    }
5122                }
5123
5124                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
5125                    if (hintDes < 0) {
5126                        hintDes = (int) FloatMath.ceil(
5127                                Layout.getDesiredWidth(mHint, mTextPaint));
5128                    }
5129
5130                    hintWidth = hintDes;
5131                } else {
5132                    hintWidth = hintBoring.width;
5133                }
5134
5135                if (hintWidth > width) {
5136                    width = hintWidth;
5137                }
5138            }
5139
5140            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
5141
5142            if (mMaxWidthMode == EMS) {
5143                width = Math.min(width, mMaxWidth * getLineHeight());
5144            } else {
5145                width = Math.min(width, mMaxWidth);
5146            }
5147
5148            if (mMinWidthMode == EMS) {
5149                width = Math.max(width, mMinWidth * getLineHeight());
5150            } else {
5151                width = Math.max(width, mMinWidth);
5152            }
5153
5154            // Check against our minimum width
5155            width = Math.max(width, getSuggestedMinimumWidth());
5156
5157            if (widthMode == MeasureSpec.AT_MOST) {
5158                width = Math.min(widthSize, width);
5159            }
5160        }
5161
5162        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
5163        int unpaddedWidth = want;
5164        int hintWant = want;
5165
5166        if (mHorizontallyScrolling)
5167            want = VERY_WIDE;
5168
5169        int hintWidth = mHintLayout == null ? hintWant : mHintLayout.getWidth();
5170
5171        if (mLayout == null) {
5172            makeNewLayout(want, hintWant, boring, hintBoring,
5173                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
5174        } else if ((mLayout.getWidth() != want) || (hintWidth != hintWant) ||
5175                   (mLayout.getEllipsizedWidth() !=
5176                        width - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
5177            if (mHint == null && mEllipsize == null &&
5178                    want > mLayout.getWidth() &&
5179                    (mLayout instanceof BoringLayout ||
5180                            (fromexisting && des >= 0 && des <= want))) {
5181                mLayout.increaseWidthTo(want);
5182            } else {
5183                makeNewLayout(want, hintWant, boring, hintBoring,
5184                              width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
5185            }
5186        } else {
5187            // Width has not changed.
5188        }
5189
5190        if (heightMode == MeasureSpec.EXACTLY) {
5191            // Parent has told us how big to be. So be it.
5192            height = heightSize;
5193            mDesiredHeightAtMeasure = -1;
5194        } else {
5195            int desired = getDesiredHeight();
5196
5197            height = desired;
5198            mDesiredHeightAtMeasure = desired;
5199
5200            if (heightMode == MeasureSpec.AT_MOST) {
5201                height = Math.min(desired, heightSize);
5202            }
5203        }
5204
5205        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
5206        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
5207            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
5208        }
5209
5210        /*
5211         * We didn't let makeNewLayout() register to bring the cursor into view,
5212         * so do it here if there is any possibility that it is needed.
5213         */
5214        if (mMovement != null ||
5215            mLayout.getWidth() > unpaddedWidth ||
5216            mLayout.getHeight() > unpaddedHeight) {
5217            registerForPreDraw();
5218        } else {
5219            scrollTo(0, 0);
5220        }
5221
5222        setMeasuredDimension(width, height);
5223    }
5224
5225    private int getDesiredHeight() {
5226        return Math.max(
5227                getDesiredHeight(mLayout, true),
5228                getDesiredHeight(mHintLayout, mEllipsize != null));
5229    }
5230
5231    private int getDesiredHeight(Layout layout, boolean cap) {
5232        if (layout == null) {
5233            return 0;
5234        }
5235
5236        int linecount = layout.getLineCount();
5237        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
5238        int desired = layout.getLineTop(linecount);
5239
5240        final Drawables dr = mDrawables;
5241        if (dr != null) {
5242            desired = Math.max(desired, dr.mDrawableHeightLeft);
5243            desired = Math.max(desired, dr.mDrawableHeightRight);
5244        }
5245
5246        desired += pad;
5247
5248        if (mMaxMode == LINES) {
5249            /*
5250             * Don't cap the hint to a certain number of lines.
5251             * (Do cap it, though, if we have a maximum pixel height.)
5252             */
5253            if (cap) {
5254                if (linecount > mMaximum) {
5255                    desired = layout.getLineTop(mMaximum) +
5256                              layout.getBottomPadding();
5257
5258                    if (dr != null) {
5259                        desired = Math.max(desired, dr.mDrawableHeightLeft);
5260                        desired = Math.max(desired, dr.mDrawableHeightRight);
5261                    }
5262
5263                    desired += pad;
5264                    linecount = mMaximum;
5265                }
5266            }
5267        } else {
5268            desired = Math.min(desired, mMaximum);
5269        }
5270
5271        if (mMinMode == LINES) {
5272            if (linecount < mMinimum) {
5273                desired += getLineHeight() * (mMinimum - linecount);
5274            }
5275        } else {
5276            desired = Math.max(desired, mMinimum);
5277        }
5278
5279        // Check against our minimum height
5280        desired = Math.max(desired, getSuggestedMinimumHeight());
5281
5282        return desired;
5283    }
5284
5285    /**
5286     * Check whether a change to the existing text layout requires a
5287     * new view layout.
5288     */
5289    private void checkForResize() {
5290        boolean sizeChanged = false;
5291
5292        if (mLayout != null) {
5293            // Check if our width changed
5294            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
5295                sizeChanged = true;
5296                invalidate();
5297            }
5298
5299            // Check if our height changed
5300            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
5301                int desiredHeight = getDesiredHeight();
5302
5303                if (desiredHeight != this.getHeight()) {
5304                    sizeChanged = true;
5305                }
5306            } else if (mLayoutParams.height == LayoutParams.FILL_PARENT) {
5307                if (mDesiredHeightAtMeasure >= 0) {
5308                    int desiredHeight = getDesiredHeight();
5309
5310                    if (desiredHeight != mDesiredHeightAtMeasure) {
5311                        sizeChanged = true;
5312                    }
5313                }
5314            }
5315        }
5316
5317        if (sizeChanged) {
5318            requestLayout();
5319            // caller will have already invalidated
5320        }
5321    }
5322
5323    /**
5324     * Check whether entirely new text requires a new view layout
5325     * or merely a new text layout.
5326     */
5327    private void checkForRelayout() {
5328        // If we have a fixed width, we can just swap in a new text layout
5329        // if the text height stays the same or if the view height is fixed.
5330
5331        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
5332                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
5333                (mHint == null || mHintLayout != null) &&
5334                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
5335            // Static width, so try making a new text layout.
5336
5337            int oldht = mLayout.getHeight();
5338            int want = mLayout.getWidth();
5339            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
5340
5341            /*
5342             * No need to bring the text into view, since the size is not
5343             * changing (unless we do the requestLayout(), in which case it
5344             * will happen at measure).
5345             */
5346            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
5347                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
5348
5349            // In a fixed-height view, so use our new text layout.
5350            if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
5351                mLayoutParams.height != LayoutParams.FILL_PARENT) {
5352                invalidate();
5353                return;
5354            }
5355
5356            // Dynamic height, but height has stayed the same,
5357            // so use our new text layout.
5358            if (mLayout.getHeight() == oldht &&
5359                (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
5360                invalidate();
5361                return;
5362            }
5363
5364            // We lose: the height has changed and we have a dynamic height.
5365            // Request a new view layout using our new text layout.
5366            requestLayout();
5367            invalidate();
5368        } else {
5369            // Dynamic width, so we have no choice but to request a new
5370            // view layout with a new text layout.
5371
5372            nullLayouts();
5373            requestLayout();
5374            invalidate();
5375        }
5376    }
5377
5378    /**
5379     * Returns true if anything changed.
5380     */
5381    private boolean bringTextIntoView() {
5382        int line = 0;
5383        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5384            line = mLayout.getLineCount() - 1;
5385        }
5386
5387        Layout.Alignment a = mLayout.getParagraphAlignment(line);
5388        int dir = mLayout.getParagraphDirection(line);
5389        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5390        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
5391        int ht = mLayout.getHeight();
5392
5393        int scrollx, scrolly;
5394
5395        if (a == Layout.Alignment.ALIGN_CENTER) {
5396            /*
5397             * Keep centered if possible, or, if it is too wide to fit,
5398             * keep leading edge in view.
5399             */
5400
5401            int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
5402            int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5403
5404            if (right - left < hspace) {
5405                scrollx = (right + left) / 2 - hspace / 2;
5406            } else {
5407                if (dir < 0) {
5408                    scrollx = right - hspace;
5409                } else {
5410                    scrollx = left;
5411                }
5412            }
5413        } else if (a == Layout.Alignment.ALIGN_NORMAL) {
5414            /*
5415             * Keep leading edge in view.
5416             */
5417
5418            if (dir < 0) {
5419                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5420                scrollx = right - hspace;
5421            } else {
5422                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
5423            }
5424        } else /* a == Layout.Alignment.ALIGN_OPPOSITE */ {
5425            /*
5426             * Keep trailing edge in view.
5427             */
5428
5429            if (dir < 0) {
5430                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
5431            } else {
5432                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5433                scrollx = right - hspace;
5434            }
5435        }
5436
5437        if (ht < vspace) {
5438            scrolly = 0;
5439        } else {
5440            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5441                scrolly = ht - vspace;
5442            } else {
5443                scrolly = 0;
5444            }
5445        }
5446
5447        if (scrollx != mScrollX || scrolly != mScrollY) {
5448            scrollTo(scrollx, scrolly);
5449            return true;
5450        } else {
5451            return false;
5452        }
5453    }
5454
5455    /**
5456     * Move the point, specified by the offset, into the view if it is needed.
5457     * This has to be called after layout. Returns true if anything changed.
5458     */
5459    public boolean bringPointIntoView(int offset) {
5460        boolean changed = false;
5461
5462        int line = mLayout.getLineForOffset(offset);
5463
5464        // FIXME: Is it okay to truncate this, or should we round?
5465        final int x = (int)mLayout.getPrimaryHorizontal(offset);
5466        final int top = mLayout.getLineTop(line);
5467        final int bottom = mLayout.getLineTop(line+1);
5468
5469        int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
5470        int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
5471        int ht = mLayout.getHeight();
5472
5473        int grav;
5474
5475        switch (mLayout.getParagraphAlignment(line)) {
5476            case ALIGN_NORMAL:
5477                grav = 1;
5478                break;
5479
5480            case ALIGN_OPPOSITE:
5481                grav = -1;
5482                break;
5483
5484            default:
5485                grav = 0;
5486        }
5487
5488        grav *= mLayout.getParagraphDirection(line);
5489
5490        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5491        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
5492
5493        int hslack = (bottom - top) / 2;
5494        int vslack = hslack;
5495
5496        if (vslack > vspace / 4)
5497            vslack = vspace / 4;
5498        if (hslack > hspace / 4)
5499            hslack = hspace / 4;
5500
5501        int hs = mScrollX;
5502        int vs = mScrollY;
5503
5504        if (top - vs < vslack)
5505            vs = top - vslack;
5506        if (bottom - vs > vspace - vslack)
5507            vs = bottom - (vspace - vslack);
5508        if (ht - vs < vspace)
5509            vs = ht - vspace;
5510        if (0 - vs > 0)
5511            vs = 0;
5512
5513        if (grav != 0) {
5514            if (x - hs < hslack) {
5515                hs = x - hslack;
5516            }
5517            if (x - hs > hspace - hslack) {
5518                hs = x - (hspace - hslack);
5519            }
5520        }
5521
5522        if (grav < 0) {
5523            if (left - hs > 0)
5524                hs = left;
5525            if (right - hs < hspace)
5526                hs = right - hspace;
5527        } else if (grav > 0) {
5528            if (right - hs < hspace)
5529                hs = right - hspace;
5530            if (left - hs > 0)
5531                hs = left;
5532        } else /* grav == 0 */ {
5533            if (right - left <= hspace) {
5534                /*
5535                 * If the entire text fits, center it exactly.
5536                 */
5537                hs = left - (hspace - (right - left)) / 2;
5538            } else if (x > right - hslack) {
5539                /*
5540                 * If we are near the right edge, keep the right edge
5541                 * at the edge of the view.
5542                 */
5543                hs = right - hspace;
5544            } else if (x < left + hslack) {
5545                /*
5546                 * If we are near the left edge, keep the left edge
5547                 * at the edge of the view.
5548                 */
5549                hs = left;
5550            } else if (left > hs) {
5551                /*
5552                 * Is there whitespace visible at the left?  Fix it if so.
5553                 */
5554                hs = left;
5555            } else if (right < hs + hspace) {
5556                /*
5557                 * Is there whitespace visible at the right?  Fix it if so.
5558                 */
5559                hs = right - hspace;
5560            } else {
5561                /*
5562                 * Otherwise, float as needed.
5563                 */
5564                if (x - hs < hslack) {
5565                    hs = x - hslack;
5566                }
5567                if (x - hs > hspace - hslack) {
5568                    hs = x - (hspace - hslack);
5569                }
5570            }
5571        }
5572
5573        if (hs != mScrollX || vs != mScrollY) {
5574            if (mScroller == null) {
5575                scrollTo(hs, vs);
5576            } else {
5577                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
5578                int dx = hs - mScrollX;
5579                int dy = vs - mScrollY;
5580
5581                if (duration > ANIMATED_SCROLL_GAP) {
5582                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
5583                    awakenScrollBars(mScroller.getDuration());
5584                    invalidate();
5585                } else {
5586                    if (!mScroller.isFinished()) {
5587                        mScroller.abortAnimation();
5588                    }
5589
5590                    scrollBy(dx, dy);
5591                }
5592
5593                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
5594            }
5595
5596            changed = true;
5597        }
5598
5599        if (isFocused()) {
5600            // This offsets because getInterestingRect() is in terms of
5601            // viewport coordinates, but requestRectangleOnScreen()
5602            // is in terms of content coordinates.
5603
5604            Rect r = new Rect();
5605            getInterestingRect(r, x, top, bottom, line);
5606            r.offset(mScrollX, mScrollY);
5607
5608            if (requestRectangleOnScreen(r)) {
5609                changed = true;
5610            }
5611        }
5612
5613        return changed;
5614    }
5615
5616    /**
5617     * Move the cursor, if needed, so that it is at an offset that is visible
5618     * to the user.  This will not move the cursor if it represents more than
5619     * one character (a selection range).  This will only work if the
5620     * TextView contains spannable text; otherwise it will do nothing.
5621     */
5622    public boolean moveCursorToVisibleOffset() {
5623        if (!(mText instanceof Spannable)) {
5624            return false;
5625        }
5626        int start = Selection.getSelectionStart(mText);
5627        int end = Selection.getSelectionEnd(mText);
5628        if (start != end) {
5629            return false;
5630        }
5631
5632        // First: make sure the line is visible on screen:
5633
5634        int line = mLayout.getLineForOffset(start);
5635
5636        final int top = mLayout.getLineTop(line);
5637        final int bottom = mLayout.getLineTop(line+1);
5638        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
5639        int vslack = (bottom - top) / 2;
5640        if (vslack > vspace / 4)
5641            vslack = vspace / 4;
5642        final int vs = mScrollY;
5643
5644        if (top < (vs+vslack)) {
5645            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
5646        } else if (bottom > (vspace+vs-vslack)) {
5647            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
5648        }
5649
5650        // Next: make sure the character is visible on screen:
5651
5652        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5653        final int hs = mScrollX;
5654        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
5655        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
5656
5657        int newStart = start;
5658        if (newStart < leftChar) {
5659            newStart = leftChar;
5660        } else if (newStart > rightChar) {
5661            newStart = rightChar;
5662        }
5663
5664        if (newStart != start) {
5665            Selection.setSelection((Spannable)mText, newStart);
5666            return true;
5667        }
5668
5669        return false;
5670    }
5671
5672    @Override
5673    public void computeScroll() {
5674        if (mScroller != null) {
5675            if (mScroller.computeScrollOffset()) {
5676                mScrollX = mScroller.getCurrX();
5677                mScrollY = mScroller.getCurrY();
5678                postInvalidate();  // So we draw again
5679            }
5680        }
5681    }
5682
5683    private void getInterestingRect(Rect r, int h, int top, int bottom,
5684                                    int line) {
5685        int paddingTop = getExtendedPaddingTop();
5686        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5687            paddingTop += getVerticalOffset(false);
5688        }
5689        top += paddingTop;
5690        bottom += paddingTop;
5691        h += getCompoundPaddingLeft();
5692
5693        if (line == 0)
5694            top -= getExtendedPaddingTop();
5695        if (line == mLayout.getLineCount() - 1)
5696            bottom += getExtendedPaddingBottom();
5697
5698        r.set(h, top, h+1, bottom);
5699        r.offset(-mScrollX, -mScrollY);
5700    }
5701
5702    @Override
5703    public void debug(int depth) {
5704        super.debug(depth);
5705
5706        String output = debugIndent(depth);
5707        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
5708                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
5709                + "} ";
5710
5711        if (mText != null) {
5712
5713            output += "mText=\"" + mText + "\" ";
5714            if (mLayout != null) {
5715                output += "mLayout width=" + mLayout.getWidth()
5716                        + " height=" + mLayout.getHeight();
5717            }
5718        } else {
5719            output += "mText=NULL";
5720        }
5721        Log.d(VIEW_LOG_TAG, output);
5722    }
5723
5724    /**
5725     * Convenience for {@link Selection#getSelectionStart}.
5726     */
5727    public int getSelectionStart() {
5728        return Selection.getSelectionStart(getText());
5729    }
5730
5731    /**
5732     * Convenience for {@link Selection#getSelectionEnd}.
5733     */
5734    public int getSelectionEnd() {
5735        return Selection.getSelectionEnd(getText());
5736    }
5737
5738    /**
5739     * Return true iff there is a selection inside this text view.
5740     */
5741    public boolean hasSelection() {
5742        return getSelectionStart() != getSelectionEnd();
5743    }
5744
5745    /**
5746     * Sets the properties of this field (lines, horizontally scrolling,
5747     * transformation method) to be for a single-line input.
5748     *
5749     * @attr ref android.R.styleable#TextView_singleLine
5750     */
5751    public void setSingleLine() {
5752        setSingleLine(true);
5753    }
5754
5755    /**
5756     * If true, sets the properties of this field (lines, horizontally
5757     * scrolling, transformation method) to be for a single-line input;
5758     * if false, restores these to the default conditions.
5759     * Note that calling this with false restores default conditions,
5760     * not necessarily those that were in effect prior to calling
5761     * it with true.
5762     *
5763     * @attr ref android.R.styleable#TextView_singleLine
5764     */
5765    @android.view.RemotableViewMethod
5766    public void setSingleLine(boolean singleLine) {
5767        if ((mInputType&EditorInfo.TYPE_MASK_CLASS)
5768                == EditorInfo.TYPE_CLASS_TEXT) {
5769            if (singleLine) {
5770                mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
5771            } else {
5772                mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
5773            }
5774        }
5775        applySingleLine(singleLine, true);
5776    }
5777
5778    private void applySingleLine(boolean singleLine, boolean applyTransformation) {
5779        mSingleLine = singleLine;
5780        if (singleLine) {
5781            setLines(1);
5782            setHorizontallyScrolling(true);
5783            if (applyTransformation) {
5784                setTransformationMethod(SingleLineTransformationMethod.
5785                                        getInstance());
5786            }
5787        } else {
5788            setMaxLines(Integer.MAX_VALUE);
5789            setHorizontallyScrolling(false);
5790            if (applyTransformation) {
5791                setTransformationMethod(null);
5792            }
5793        }
5794    }
5795
5796    /**
5797     * Causes words in the text that are longer than the view is wide
5798     * to be ellipsized instead of broken in the middle.  You may also
5799     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
5800     * to constrain the text to a single line.  Use <code>null</code>
5801     * to turn off ellipsizing.
5802     *
5803     * @attr ref android.R.styleable#TextView_ellipsize
5804     */
5805    public void setEllipsize(TextUtils.TruncateAt where) {
5806        mEllipsize = where;
5807
5808        if (mLayout != null) {
5809            nullLayouts();
5810            requestLayout();
5811            invalidate();
5812        }
5813    }
5814
5815    /**
5816     * Sets how many times to repeat the marquee animation. Only applied if the
5817     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
5818     *
5819     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
5820     */
5821    public void setMarqueeRepeatLimit(int marqueeLimit) {
5822        mMarqueeRepeatLimit = marqueeLimit;
5823    }
5824
5825    /**
5826     * Returns where, if anywhere, words that are longer than the view
5827     * is wide should be ellipsized.
5828     */
5829    @ViewDebug.ExportedProperty
5830    public TextUtils.TruncateAt getEllipsize() {
5831        return mEllipsize;
5832    }
5833
5834    /**
5835     * Set the TextView so that when it takes focus, all the text is
5836     * selected.
5837     *
5838     * @attr ref android.R.styleable#TextView_selectAllOnFocus
5839     */
5840    @android.view.RemotableViewMethod
5841    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
5842        mSelectAllOnFocus = selectAllOnFocus;
5843
5844        if (selectAllOnFocus && !(mText instanceof Spannable)) {
5845            setText(mText, BufferType.SPANNABLE);
5846        }
5847    }
5848
5849    /**
5850     * Set whether the cursor is visible.  The default is true.
5851     *
5852     * @attr ref android.R.styleable#TextView_cursorVisible
5853     */
5854    @android.view.RemotableViewMethod
5855    public void setCursorVisible(boolean visible) {
5856        mCursorVisible = visible;
5857        invalidate();
5858
5859        if (visible) {
5860            makeBlink();
5861        } else if (mBlink != null) {
5862            mBlink.removeCallbacks(mBlink);
5863        }
5864    }
5865
5866    private boolean canMarquee() {
5867        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
5868        return width > 0 && mLayout.getLineWidth(0) > width;
5869    }
5870
5871    private void startMarquee() {
5872        // Do not ellipsize EditText
5873        if (mInput != null) return;
5874
5875        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
5876            return;
5877        }
5878
5879        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
5880                getLineCount() == 1 && canMarquee()) {
5881
5882            if (mMarquee == null) mMarquee = new Marquee(this);
5883            mMarquee.start(mMarqueeRepeatLimit);
5884        }
5885    }
5886
5887    private void stopMarquee() {
5888        if (mMarquee != null && !mMarquee.isStopped()) {
5889            mMarquee.stop();
5890        }
5891    }
5892
5893    private void startStopMarquee(boolean start) {
5894        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5895            if (start) {
5896                startMarquee();
5897            } else {
5898                stopMarquee();
5899            }
5900        }
5901    }
5902
5903    private static final class Marquee extends Handler {
5904        // TODO: Add an option to configure this
5905        private static final float MARQUEE_DELTA_MAX = 0.07f;
5906        private static final int MARQUEE_DELAY = 1200;
5907        private static final int MARQUEE_RESTART_DELAY = 1200;
5908        private static final int MARQUEE_RESOLUTION = 1000 / 30;
5909        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
5910
5911        private static final byte MARQUEE_STOPPED = 0x0;
5912        private static final byte MARQUEE_STARTING = 0x1;
5913        private static final byte MARQUEE_RUNNING = 0x2;
5914
5915        private static final int MESSAGE_START = 0x1;
5916        private static final int MESSAGE_TICK = 0x2;
5917        private static final int MESSAGE_RESTART = 0x3;
5918
5919        private final WeakReference<TextView> mView;
5920
5921        private byte mStatus = MARQUEE_STOPPED;
5922        private float mScrollUnit;
5923        private float mMaxScroll;
5924        float mMaxFadeScroll;
5925        private float mGhostStart;
5926        private float mGhostOffset;
5927        private float mFadeStop;
5928        private int mRepeatLimit;
5929
5930        float mScroll;
5931
5932        Marquee(TextView v) {
5933            final float density = v.getContext().getResources().getDisplayMetrics().density;
5934            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / (float) MARQUEE_RESOLUTION;
5935            mView = new WeakReference<TextView>(v);
5936        }
5937
5938        @Override
5939        public void handleMessage(Message msg) {
5940            switch (msg.what) {
5941                case MESSAGE_START:
5942                    mStatus = MARQUEE_RUNNING;
5943                    tick();
5944                    break;
5945                case MESSAGE_TICK:
5946                    tick();
5947                    break;
5948                case MESSAGE_RESTART:
5949                    if (mStatus == MARQUEE_RUNNING) {
5950                        if (mRepeatLimit >= 0) {
5951                            mRepeatLimit--;
5952                        }
5953                        start(mRepeatLimit);
5954                    }
5955                    break;
5956            }
5957        }
5958
5959        void tick() {
5960            if (mStatus != MARQUEE_RUNNING) {
5961                return;
5962            }
5963
5964            removeMessages(MESSAGE_TICK);
5965
5966            final TextView textView = mView.get();
5967            if (textView != null && (textView.isFocused() || textView.isSelected())) {
5968                mScroll += mScrollUnit;
5969                if (mScroll > mMaxScroll) {
5970                    mScroll = mMaxScroll;
5971                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
5972                } else {
5973                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
5974                }
5975                textView.invalidate();
5976            }
5977        }
5978
5979        void stop() {
5980            mStatus = MARQUEE_STOPPED;
5981            removeMessages(MESSAGE_START);
5982            removeMessages(MESSAGE_RESTART);
5983            removeMessages(MESSAGE_TICK);
5984            resetScroll();
5985        }
5986
5987        private void resetScroll() {
5988            mScroll = 0.0f;
5989            final TextView textView = mView.get();
5990            if (textView != null) textView.invalidate();
5991        }
5992
5993        void start(int repeatLimit) {
5994            if (repeatLimit == 0) {
5995                stop();
5996                return;
5997            }
5998            mRepeatLimit = repeatLimit;
5999            final TextView textView = mView.get();
6000            if (textView != null && textView.mLayout != null) {
6001                mStatus = MARQUEE_STARTING;
6002                mScroll = 0.0f;
6003                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
6004                        textView.getCompoundPaddingRight();
6005                final float lineWidth = textView.mLayout.getLineWidth(0);
6006                final float gap = textWidth / 3.0f;
6007                mGhostStart = lineWidth - textWidth + gap;
6008                mMaxScroll = mGhostStart + textWidth;
6009                mGhostOffset = lineWidth + gap;
6010                mFadeStop = lineWidth + textWidth / 6.0f;
6011                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
6012
6013                textView.invalidate();
6014                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
6015            }
6016        }
6017
6018        float getGhostOffset() {
6019            return mGhostOffset;
6020        }
6021
6022        boolean shouldDrawLeftFade() {
6023            return mScroll <= mFadeStop;
6024        }
6025
6026        boolean shouldDrawGhost() {
6027            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
6028        }
6029
6030        boolean isRunning() {
6031            return mStatus == MARQUEE_RUNNING;
6032        }
6033
6034        boolean isStopped() {
6035            return mStatus == MARQUEE_STOPPED;
6036        }
6037    }
6038
6039    /**
6040     * This method is called when the text is changed, in case any
6041     * subclasses would like to know.
6042     *
6043     * @param text The text the TextView is displaying.
6044     * @param start The offset of the start of the range of the text
6045     *              that was modified.
6046     * @param before The offset of the former end of the range of the
6047     *               text that was modified.  If text was simply inserted,
6048     *               this will be the same as <code>start</code>.
6049     *               If text was replaced with new text or deleted, the
6050     *               length of the old text was <code>before-start</code>.
6051     * @param after The offset of the end of the range of the text
6052     *              that was modified.  If text was simply deleted,
6053     *              this will be the same as <code>start</code>.
6054     *              If text was replaced with new text or inserted,
6055     *              the length of the new text is <code>after-start</code>.
6056     */
6057    protected void onTextChanged(CharSequence text,
6058                                 int start, int before, int after) {
6059    }
6060
6061    /**
6062     * This method is called when the selection has changed, in case any
6063     * subclasses would like to know.
6064     *
6065     * @param selStart The new selection start location.
6066     * @param selEnd The new selection end location.
6067     */
6068    protected void onSelectionChanged(int selStart, int selEnd) {
6069    }
6070
6071    /**
6072     * Adds a TextWatcher to the list of those whose methods are called
6073     * whenever this TextView's text changes.
6074     * <p>
6075     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
6076     * not called after {@link #setText} calls.  Now, doing {@link #setText}
6077     * if there are any text changed listeners forces the buffer type to
6078     * Editable if it would not otherwise be and does call this method.
6079     */
6080    public void addTextChangedListener(TextWatcher watcher) {
6081        if (mListeners == null) {
6082            mListeners = new ArrayList<TextWatcher>();
6083        }
6084
6085        mListeners.add(watcher);
6086    }
6087
6088    /**
6089     * Removes the specified TextWatcher from the list of those whose
6090     * methods are called
6091     * whenever this TextView's text changes.
6092     */
6093    public void removeTextChangedListener(TextWatcher watcher) {
6094        if (mListeners != null) {
6095            int i = mListeners.indexOf(watcher);
6096
6097            if (i >= 0) {
6098                mListeners.remove(i);
6099            }
6100        }
6101    }
6102
6103    private void sendBeforeTextChanged(CharSequence text, int start, int before,
6104                                   int after) {
6105        if (mListeners != null) {
6106            final ArrayList<TextWatcher> list = mListeners;
6107            final int count = list.size();
6108            for (int i = 0; i < count; i++) {
6109                list.get(i).beforeTextChanged(text, start, before, after);
6110            }
6111        }
6112    }
6113
6114    /**
6115     * Not private so it can be called from an inner class without going
6116     * through a thunk.
6117     */
6118    void sendOnTextChanged(CharSequence text, int start, int before,
6119                                   int after) {
6120        if (mListeners != null) {
6121            final ArrayList<TextWatcher> list = mListeners;
6122            final int count = list.size();
6123            for (int i = 0; i < count; i++) {
6124                list.get(i).onTextChanged(text, start, before, after);
6125            }
6126        }
6127    }
6128
6129    /**
6130     * Not private so it can be called from an inner class without going
6131     * through a thunk.
6132     */
6133    void sendAfterTextChanged(Editable text) {
6134        if (mListeners != null) {
6135            final ArrayList<TextWatcher> list = mListeners;
6136            final int count = list.size();
6137            for (int i = 0; i < count; i++) {
6138                list.get(i).afterTextChanged(text);
6139            }
6140        }
6141    }
6142
6143    /**
6144     * Not private so it can be called from an inner class without going
6145     * through a thunk.
6146     */
6147    void handleTextChanged(CharSequence buffer, int start,
6148            int before, int after) {
6149        final InputMethodState ims = mInputMethodState;
6150        if (ims == null || ims.mBatchEditNesting == 0) {
6151            updateAfterEdit();
6152        }
6153        if (ims != null) {
6154            ims.mContentChanged = true;
6155            if (ims.mChangedStart < 0) {
6156                ims.mChangedStart = start;
6157                ims.mChangedEnd = start+before;
6158            } else {
6159                if (ims.mChangedStart > start) ims.mChangedStart = start;
6160                if (ims.mChangedEnd < (start+before)) ims.mChangedEnd = start+before;
6161            }
6162            ims.mChangedDelta += after-before;
6163        }
6164
6165        sendOnTextChanged(buffer, start, before, after);
6166        onTextChanged(buffer, start, before, after);
6167    }
6168
6169    /**
6170     * Not private so it can be called from an inner class without going
6171     * through a thunk.
6172     */
6173    void spanChange(Spanned buf, Object what, int oldStart, int newStart,
6174            int oldEnd, int newEnd) {
6175        // XXX Make the start and end move together if this ends up
6176        // spending too much time invalidating.
6177
6178        boolean selChanged = false;
6179        int newSelStart=-1, newSelEnd=-1;
6180
6181        final InputMethodState ims = mInputMethodState;
6182
6183        if (what == Selection.SELECTION_END) {
6184            mHighlightPathBogus = true;
6185            selChanged = true;
6186            newSelEnd = newStart;
6187
6188            if (!isFocused()) {
6189                mSelectionMoved = true;
6190            }
6191
6192            if (oldStart >= 0 || newStart >= 0) {
6193                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
6194                registerForPreDraw();
6195
6196                if (isFocused()) {
6197                    mShowCursor = SystemClock.uptimeMillis();
6198                    makeBlink();
6199                }
6200            }
6201        }
6202
6203        if (what == Selection.SELECTION_START) {
6204            mHighlightPathBogus = true;
6205            selChanged = true;
6206            newSelStart = newStart;
6207
6208            if (!isFocused()) {
6209                mSelectionMoved = true;
6210            }
6211
6212            if (oldStart >= 0 || newStart >= 0) {
6213                int end = Selection.getSelectionEnd(buf);
6214                invalidateCursor(end, oldStart, newStart);
6215            }
6216        }
6217
6218        if (selChanged) {
6219            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
6220                if (newSelStart < 0) {
6221                    newSelStart = Selection.getSelectionStart(buf);
6222                }
6223                if (newSelEnd < 0) {
6224                    newSelEnd = Selection.getSelectionEnd(buf);
6225                }
6226                onSelectionChanged(newSelStart, newSelEnd);
6227            }
6228        }
6229
6230        if (what instanceof UpdateAppearance ||
6231            what instanceof ParagraphStyle) {
6232            if (ims == null || ims.mBatchEditNesting == 0) {
6233                invalidate();
6234                mHighlightPathBogus = true;
6235                checkForResize();
6236            } else {
6237                ims.mContentChanged = true;
6238            }
6239        }
6240
6241        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
6242            mHighlightPathBogus = true;
6243            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
6244                ims.mSelectionModeChanged = true;
6245            }
6246
6247            if (Selection.getSelectionStart(buf) >= 0) {
6248                if (ims == null || ims.mBatchEditNesting == 0) {
6249                    invalidateCursor();
6250                } else {
6251                    ims.mCursorChanged = true;
6252                }
6253            }
6254        }
6255
6256        if (what instanceof ParcelableSpan) {
6257            // If this is a span that can be sent to a remote process,
6258            // the current extract editor would be interested in it.
6259            if (ims != null && ims.mExtracting != null) {
6260                if (ims.mBatchEditNesting != 0) {
6261                    if (oldStart >= 0) {
6262                        if (ims.mChangedStart > oldStart) {
6263                            ims.mChangedStart = oldStart;
6264                        }
6265                        if (ims.mChangedStart > oldEnd) {
6266                            ims.mChangedStart = oldEnd;
6267                        }
6268                    }
6269                    if (newStart >= 0) {
6270                        if (ims.mChangedStart > newStart) {
6271                            ims.mChangedStart = newStart;
6272                        }
6273                        if (ims.mChangedStart > newEnd) {
6274                            ims.mChangedStart = newEnd;
6275                        }
6276                    }
6277                } else {
6278                    if (DEBUG_EXTRACT) Log.v(TAG, "Span change outside of batch: "
6279                            + oldStart + "-" + oldEnd + ","
6280                            + newStart + "-" + newEnd + what);
6281                    ims.mContentChanged = true;
6282                }
6283            }
6284        }
6285    }
6286
6287    private class ChangeWatcher
6288    implements TextWatcher, SpanWatcher {
6289
6290        private CharSequence mBeforeText;
6291
6292        public void beforeTextChanged(CharSequence buffer, int start,
6293                                      int before, int after) {
6294            if (DEBUG_EXTRACT) Log.v(TAG, "beforeTextChanged start=" + start
6295                    + " before=" + before + " after=" + after + ": " + buffer);
6296
6297            if (AccessibilityManager.getInstance(mContext).isEnabled()) {
6298                mBeforeText = buffer.toString();
6299            }
6300
6301            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
6302        }
6303
6304        public void onTextChanged(CharSequence buffer, int start,
6305                                  int before, int after) {
6306            if (DEBUG_EXTRACT) Log.v(TAG, "onTextChanged start=" + start
6307                    + " before=" + before + " after=" + after + ": " + buffer);
6308            TextView.this.handleTextChanged(buffer, start, before, after);
6309
6310            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
6311                    (isFocused() || isSelected() &&
6312                    isShown())) {
6313                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
6314                mBeforeText = null;
6315            }
6316        }
6317
6318        public void afterTextChanged(Editable buffer) {
6319            if (DEBUG_EXTRACT) Log.v(TAG, "afterTextChanged: " + buffer);
6320            TextView.this.sendAfterTextChanged(buffer);
6321
6322            if (MetaKeyKeyListener.getMetaState(buffer,
6323                                 MetaKeyKeyListener.META_SELECTING) != 0) {
6324                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
6325            }
6326        }
6327
6328        public void onSpanChanged(Spannable buf,
6329                                  Object what, int s, int e, int st, int en) {
6330            if (DEBUG_EXTRACT) Log.v(TAG, "onSpanChanged s=" + s + " e=" + e
6331                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
6332            TextView.this.spanChange(buf, what, s, st, e, en);
6333        }
6334
6335        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
6336            if (DEBUG_EXTRACT) Log.v(TAG, "onSpanAdded s=" + s + " e=" + e
6337                    + " what=" + what + ": " + buf);
6338            TextView.this.spanChange(buf, what, -1, s, -1, e);
6339        }
6340
6341        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
6342            if (DEBUG_EXTRACT) Log.v(TAG, "onSpanRemoved s=" + s + " e=" + e
6343                    + " what=" + what + ": " + buf);
6344            TextView.this.spanChange(buf, what, s, -1, e, -1);
6345        }
6346    }
6347
6348    private void makeBlink() {
6349        if (!mCursorVisible) {
6350            if (mBlink != null) {
6351                mBlink.removeCallbacks(mBlink);
6352            }
6353
6354            return;
6355        }
6356
6357        if (mBlink == null)
6358            mBlink = new Blink(this);
6359
6360        mBlink.removeCallbacks(mBlink);
6361        mBlink.postAtTime(mBlink, mShowCursor + BLINK);
6362    }
6363
6364    @Override
6365    public void onStartTemporaryDetach() {
6366        mTemporaryDetach = true;
6367    }
6368
6369    @Override
6370    public void onFinishTemporaryDetach() {
6371        mTemporaryDetach = false;
6372    }
6373
6374    @Override
6375    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
6376        if (mTemporaryDetach) {
6377            // If we are temporarily in the detach state, then do nothing.
6378            super.onFocusChanged(focused, direction, previouslyFocusedRect);
6379            return;
6380        }
6381
6382        mShowCursor = SystemClock.uptimeMillis();
6383
6384        ensureEndedBatchEdit();
6385
6386        if (focused) {
6387            int selStart = getSelectionStart();
6388            int selEnd = getSelectionEnd();
6389
6390            if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) {
6391                boolean selMoved = mSelectionMoved;
6392
6393                if (mMovement != null) {
6394                    mMovement.onTakeFocus(this, (Spannable) mText, direction);
6395                }
6396
6397                if (mSelectAllOnFocus) {
6398                    Selection.setSelection((Spannable) mText, 0, mText.length());
6399                }
6400
6401                if (selMoved && selStart >= 0 && selEnd >= 0) {
6402                    /*
6403                     * Someone intentionally set the selection, so let them
6404                     * do whatever it is that they wanted to do instead of
6405                     * the default on-focus behavior.  We reset the selection
6406                     * here instead of just skipping the onTakeFocus() call
6407                     * because some movement methods do something other than
6408                     * just setting the selection in theirs and we still
6409                     * need to go through that path.
6410                     */
6411
6412                    Selection.setSelection((Spannable) mText, selStart, selEnd);
6413                }
6414                mTouchFocusSelected = true;
6415            }
6416
6417            mFrozenWithFocus = false;
6418            mSelectionMoved = false;
6419
6420            if (mText instanceof Spannable) {
6421                Spannable sp = (Spannable) mText;
6422                MetaKeyKeyListener.resetMetaState(sp);
6423            }
6424
6425            makeBlink();
6426
6427            if (mError != null) {
6428                showError();
6429            }
6430        } else {
6431            if (mError != null) {
6432                hideError();
6433            }
6434            // Don't leave us in the middle of a batch edit.
6435            onEndBatchEdit();
6436        }
6437
6438        startStopMarquee(focused);
6439
6440        if (mTransformation != null) {
6441            mTransformation.onFocusChanged(this, mText, focused, direction,
6442                                           previouslyFocusedRect);
6443        }
6444
6445        super.onFocusChanged(focused, direction, previouslyFocusedRect);
6446    }
6447
6448    @Override
6449    public void onWindowFocusChanged(boolean hasWindowFocus) {
6450        super.onWindowFocusChanged(hasWindowFocus);
6451
6452        if (hasWindowFocus) {
6453            if (mBlink != null) {
6454                mBlink.uncancel();
6455
6456                if (isFocused()) {
6457                    mShowCursor = SystemClock.uptimeMillis();
6458                    makeBlink();
6459                }
6460            }
6461        } else {
6462            if (mBlink != null) {
6463                mBlink.cancel();
6464            }
6465            // Don't leave us in the middle of a batch edit.
6466            onEndBatchEdit();
6467            if (mInputContentType != null) {
6468                mInputContentType.enterDown = false;
6469            }
6470        }
6471
6472        startStopMarquee(hasWindowFocus);
6473    }
6474
6475    /**
6476     * Use {@link BaseInputConnection#removeComposingSpans
6477     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
6478     * state from this text view.
6479     */
6480    public void clearComposingText() {
6481        if (mText instanceof Spannable) {
6482            BaseInputConnection.removeComposingSpans((Spannable)mText);
6483        }
6484    }
6485
6486    @Override
6487    public void setSelected(boolean selected) {
6488        boolean wasSelected = isSelected();
6489
6490        super.setSelected(selected);
6491
6492        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6493            if (selected) {
6494                startMarquee();
6495            } else {
6496                stopMarquee();
6497            }
6498        }
6499    }
6500
6501    class CommitSelectionReceiver extends ResultReceiver {
6502        int mNewStart;
6503        int mNewEnd;
6504
6505        CommitSelectionReceiver() {
6506            super(getHandler());
6507        }
6508
6509        protected void onReceiveResult(int resultCode, Bundle resultData) {
6510            if (resultCode != InputMethodManager.RESULT_SHOWN) {
6511                final int len = mText.length();
6512                if (mNewStart > len) {
6513                    mNewStart = len;
6514                }
6515                if (mNewEnd > len) {
6516                    mNewEnd = len;
6517                }
6518                Selection.setSelection((Spannable)mText, mNewStart, mNewEnd);
6519            }
6520        }
6521    }
6522
6523    @Override
6524    public boolean onTouchEvent(MotionEvent event) {
6525        final int action = event.getAction();
6526        if (action == MotionEvent.ACTION_DOWN) {
6527            // Reset this state; it will be re-set if super.onTouchEvent
6528            // causes focus to move to the view.
6529            mTouchFocusSelected = false;
6530        }
6531
6532        final boolean superResult = super.onTouchEvent(event);
6533
6534        /*
6535         * Don't handle the release after a long press, because it will
6536         * move the selection away from whatever the menu action was
6537         * trying to affect.
6538         */
6539        if (mEatTouchRelease && action == MotionEvent.ACTION_UP) {
6540            mEatTouchRelease = false;
6541            return superResult;
6542        }
6543
6544        if ((mMovement != null || onCheckIsTextEditor()) && mText instanceof Spannable && mLayout != null) {
6545
6546            if (action == MotionEvent.ACTION_DOWN) {
6547                mScrolled = false;
6548            }
6549
6550            boolean handled = false;
6551
6552            int oldSelStart = Selection.getSelectionStart(mText);
6553            int oldSelEnd = Selection.getSelectionEnd(mText);
6554
6555            if (mMovement != null) {
6556                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
6557            }
6558
6559            if (mText instanceof Editable && onCheckIsTextEditor()) {
6560                if (action == MotionEvent.ACTION_UP && isFocused() && !mScrolled) {
6561                    InputMethodManager imm = (InputMethodManager)
6562                            getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
6563
6564                    // This is going to be gross...  if tapping on the text view
6565                    // causes the IME to be displayed, we don't want the selection
6566                    // to change.  But the selection has already changed, and
6567                    // we won't know right away whether the IME is getting
6568                    // displayed, so...
6569
6570                    int newSelStart = Selection.getSelectionStart(mText);
6571                    int newSelEnd = Selection.getSelectionEnd(mText);
6572                    CommitSelectionReceiver csr = null;
6573                    if (newSelStart != oldSelStart || newSelEnd != oldSelEnd) {
6574                        csr = new CommitSelectionReceiver();
6575                        csr.mNewStart = newSelStart;
6576                        csr.mNewEnd = newSelEnd;
6577                    }
6578
6579                    if (imm.showSoftInput(this, 0, csr) && csr != null) {
6580                        // The IME might get shown -- revert to the old
6581                        // selection, and change to the new when we finally
6582                        // find out of it is okay.
6583                        Selection.setSelection((Spannable)mText, oldSelStart, oldSelEnd);
6584                        handled = true;
6585                    }
6586                }
6587            }
6588
6589            if (handled) {
6590                return true;
6591            }
6592        }
6593
6594        return superResult;
6595    }
6596
6597    /**
6598     * Returns true, only while processing a touch gesture, if the initial
6599     * touch down event caused focus to move to the text view and as a result
6600     * its selection changed.  Only valid while processing the touch gesture
6601     * of interest.
6602     */
6603    public boolean didTouchFocusSelect() {
6604        return mTouchFocusSelected;
6605    }
6606
6607    @Override
6608    public void cancelLongPress() {
6609        super.cancelLongPress();
6610        mScrolled = true;
6611    }
6612
6613    @Override
6614    public boolean onTrackballEvent(MotionEvent event) {
6615        if (mMovement != null && mText instanceof Spannable &&
6616            mLayout != null) {
6617            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
6618                return true;
6619            }
6620        }
6621
6622        return super.onTrackballEvent(event);
6623    }
6624
6625    public void setScroller(Scroller s) {
6626        mScroller = s;
6627    }
6628
6629    private static class Blink extends Handler implements Runnable {
6630        private WeakReference<TextView> mView;
6631        private boolean mCancelled;
6632
6633        public Blink(TextView v) {
6634            mView = new WeakReference<TextView>(v);
6635        }
6636
6637        public void run() {
6638            if (mCancelled) {
6639                return;
6640            }
6641
6642            removeCallbacks(Blink.this);
6643
6644            TextView tv = mView.get();
6645
6646            if (tv != null && tv.isFocused()) {
6647                int st = Selection.getSelectionStart(tv.mText);
6648                int en = Selection.getSelectionEnd(tv.mText);
6649
6650                if (st == en && st >= 0 && en >= 0) {
6651                    if (tv.mLayout != null) {
6652                        tv.invalidateCursorPath();
6653                    }
6654
6655                    postAtTime(this, SystemClock.uptimeMillis() + BLINK);
6656                }
6657            }
6658        }
6659
6660        void cancel() {
6661            if (!mCancelled) {
6662                removeCallbacks(Blink.this);
6663                mCancelled = true;
6664            }
6665        }
6666
6667        void uncancel() {
6668            mCancelled = false;
6669        }
6670    }
6671
6672    @Override
6673    protected float getLeftFadingEdgeStrength() {
6674        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6675            if (mMarquee != null && !mMarquee.isStopped()) {
6676                final Marquee marquee = mMarquee;
6677                if (marquee.shouldDrawLeftFade()) {
6678                    return marquee.mScroll / getHorizontalFadingEdgeLength();
6679                } else {
6680                    return 0.0f;
6681                }
6682            } else if (getLineCount() == 1) {
6683                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
6684                    case Gravity.LEFT:
6685                        return 0.0f;
6686                    case Gravity.RIGHT:
6687                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
6688                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
6689                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
6690                    case Gravity.CENTER_HORIZONTAL:
6691                        return 0.0f;
6692                }
6693            }
6694        }
6695        return super.getLeftFadingEdgeStrength();
6696    }
6697
6698    @Override
6699    protected float getRightFadingEdgeStrength() {
6700        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6701            if (mMarquee != null && !mMarquee.isStopped()) {
6702                final Marquee marquee = mMarquee;
6703                return (marquee.mMaxFadeScroll - marquee.mScroll) / getHorizontalFadingEdgeLength();
6704            } else if (getLineCount() == 1) {
6705                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
6706                    case Gravity.LEFT:
6707                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
6708                                getCompoundPaddingRight();
6709                        final float lineWidth = mLayout.getLineWidth(0);
6710                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
6711                    case Gravity.RIGHT:
6712                        return 0.0f;
6713                    case Gravity.CENTER_HORIZONTAL:
6714                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
6715                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
6716                                getHorizontalFadingEdgeLength();
6717                }
6718            }
6719        }
6720        return super.getRightFadingEdgeStrength();
6721    }
6722
6723    @Override
6724    protected int computeHorizontalScrollRange() {
6725        if (mLayout != null)
6726            return mLayout.getWidth();
6727
6728        return super.computeHorizontalScrollRange();
6729    }
6730
6731    @Override
6732    protected int computeVerticalScrollRange() {
6733        if (mLayout != null)
6734            return mLayout.getHeight();
6735
6736        return super.computeVerticalScrollRange();
6737    }
6738
6739    @Override
6740    protected int computeVerticalScrollExtent() {
6741        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
6742    }
6743
6744    public enum BufferType {
6745        NORMAL, SPANNABLE, EDITABLE,
6746    }
6747
6748    /**
6749     * Returns the TextView_textColor attribute from the
6750     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
6751     * from the TextView_textAppearance attribute, if TextView_textColor
6752     * was not set directly.
6753     */
6754    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
6755        ColorStateList colors;
6756        colors = attrs.getColorStateList(com.android.internal.R.styleable.
6757                                         TextView_textColor);
6758
6759        if (colors == null) {
6760            int ap = attrs.getResourceId(com.android.internal.R.styleable.
6761                                         TextView_textAppearance, -1);
6762            if (ap != -1) {
6763                TypedArray appearance;
6764                appearance = context.obtainStyledAttributes(ap,
6765                                            com.android.internal.R.styleable.TextAppearance);
6766                colors = appearance.getColorStateList(com.android.internal.R.styleable.
6767                                                  TextAppearance_textColor);
6768                appearance.recycle();
6769            }
6770        }
6771
6772        return colors;
6773    }
6774
6775    /**
6776     * Returns the default color from the TextView_textColor attribute
6777     * from the AttributeSet, if set, or the default color from the
6778     * TextAppearance_textColor from the TextView_textAppearance attribute,
6779     * if TextView_textColor was not set directly.
6780     */
6781    public static int getTextColor(Context context,
6782                                   TypedArray attrs,
6783                                   int def) {
6784        ColorStateList colors = getTextColors(context, attrs);
6785
6786        if (colors == null) {
6787            return def;
6788        } else {
6789            return colors.getDefaultColor();
6790        }
6791    }
6792
6793    @Override
6794    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
6795        switch (keyCode) {
6796        case KeyEvent.KEYCODE_A:
6797            if (canSelectAll()) {
6798                return onTextContextMenuItem(ID_SELECT_ALL);
6799            }
6800
6801            break;
6802
6803        case KeyEvent.KEYCODE_X:
6804            if (canCut()) {
6805                return onTextContextMenuItem(ID_CUT);
6806            }
6807
6808            break;
6809
6810        case KeyEvent.KEYCODE_C:
6811            if (canCopy()) {
6812                return onTextContextMenuItem(ID_COPY);
6813            }
6814
6815            break;
6816
6817        case KeyEvent.KEYCODE_V:
6818            if (canPaste()) {
6819                return onTextContextMenuItem(ID_PASTE);
6820            }
6821
6822            break;
6823        }
6824
6825        return super.onKeyShortcut(keyCode, event);
6826    }
6827
6828    private boolean canSelectAll() {
6829        if (mText instanceof Spannable && mText.length() != 0 &&
6830            mMovement != null && mMovement.canSelectArbitrarily()) {
6831            return true;
6832        }
6833
6834        return false;
6835    }
6836
6837    private boolean canSelectText() {
6838        if (mText instanceof Spannable && mText.length() != 0 &&
6839            mMovement != null && mMovement.canSelectArbitrarily()) {
6840            return true;
6841        }
6842
6843        return false;
6844    }
6845
6846    private boolean canCut() {
6847        if (mTransformation instanceof PasswordTransformationMethod) {
6848            return false;
6849        }
6850
6851        if (mText.length() > 0 && getSelectionStart() >= 0) {
6852            if (mText instanceof Editable && mInput != null) {
6853                return true;
6854            }
6855        }
6856
6857        return false;
6858    }
6859
6860    private boolean canCopy() {
6861        if (mTransformation instanceof PasswordTransformationMethod) {
6862            return false;
6863        }
6864
6865        if (mText.length() > 0 && getSelectionStart() >= 0) {
6866            return true;
6867        }
6868
6869        return false;
6870    }
6871
6872    private boolean canPaste() {
6873        if (mText instanceof Editable && mInput != null &&
6874            getSelectionStart() >= 0 && getSelectionEnd() >= 0) {
6875            ClipboardManager clip = (ClipboardManager)getContext()
6876                    .getSystemService(Context.CLIPBOARD_SERVICE);
6877            if (clip.hasText()) {
6878                return true;
6879            }
6880        }
6881
6882        return false;
6883    }
6884
6885    /**
6886     * Returns a word to add to the dictionary from the context menu,
6887     * or null if there is no cursor or no word at the cursor.
6888     */
6889    private String getWordForDictionary() {
6890        /*
6891         * Quick return if the input type is one where adding words
6892         * to the dictionary doesn't make any sense.
6893         */
6894        int klass = mInputType & InputType.TYPE_MASK_CLASS;
6895        if (klass == InputType.TYPE_CLASS_NUMBER ||
6896            klass == InputType.TYPE_CLASS_PHONE ||
6897            klass == InputType.TYPE_CLASS_DATETIME) {
6898            return null;
6899        }
6900
6901        int variation = mInputType & InputType.TYPE_MASK_VARIATION;
6902        if (variation == InputType.TYPE_TEXT_VARIATION_URI ||
6903            variation == InputType.TYPE_TEXT_VARIATION_PASSWORD ||
6904            variation == InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD ||
6905            variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS ||
6906            variation == InputType.TYPE_TEXT_VARIATION_FILTER) {
6907            return null;
6908        }
6909
6910        int end = getSelectionEnd();
6911
6912        if (end < 0) {
6913            return null;
6914        }
6915
6916        int start = end;
6917        int len = mText.length();
6918
6919        for (; start > 0; start--) {
6920            char c = mTransformed.charAt(start - 1);
6921            int type = Character.getType(c);
6922
6923            if (c != '\'' &&
6924                type != Character.UPPERCASE_LETTER &&
6925                type != Character.LOWERCASE_LETTER &&
6926                type != Character.TITLECASE_LETTER &&
6927                type != Character.MODIFIER_LETTER &&
6928                type != Character.DECIMAL_DIGIT_NUMBER) {
6929                break;
6930            }
6931        }
6932
6933        for (; end < len; end++) {
6934            char c = mTransformed.charAt(end);
6935            int type = Character.getType(c);
6936
6937            if (c != '\'' &&
6938                type != Character.UPPERCASE_LETTER &&
6939                type != Character.LOWERCASE_LETTER &&
6940                type != Character.TITLECASE_LETTER &&
6941                type != Character.MODIFIER_LETTER &&
6942                type != Character.DECIMAL_DIGIT_NUMBER) {
6943                break;
6944            }
6945        }
6946
6947        boolean hasLetter = false;
6948        for (int i = start; i < end; i++) {
6949            if (Character.isLetter(mTransformed.charAt(i))) {
6950                hasLetter = true;
6951                break;
6952            }
6953        }
6954        if (!hasLetter) {
6955            return null;
6956        }
6957
6958        if (start == end) {
6959            return null;
6960        }
6961
6962        if (end - start > 48) {
6963            return null;
6964        }
6965
6966        return TextUtils.substring(mTransformed, start, end);
6967    }
6968
6969    @Override
6970    public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
6971        boolean isPassword =
6972            (mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION)) ==
6973            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
6974
6975        if (!isPassword) {
6976            CharSequence text = getText();
6977            if (TextUtils.isEmpty(text)) {
6978                text = getHint();
6979            }
6980            if (!TextUtils.isEmpty(text)) {
6981                if (text.length() > AccessibilityEvent.MAX_TEXT_LENGTH) {
6982                    text = text.subSequence(0, AccessibilityEvent.MAX_TEXT_LENGTH + 1);
6983                }
6984                event.getText().add(text);
6985            }
6986        } else {
6987            event.setPassword(isPassword);
6988        }
6989        return false;
6990    }
6991
6992    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
6993            int fromIndex, int removedCount, int addedCount) {
6994        AccessibilityEvent event =
6995            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
6996        event.setFromIndex(fromIndex);
6997        event.setRemovedCount(removedCount);
6998        event.setAddedCount(addedCount);
6999        event.setBeforeText(beforeText);
7000        sendAccessibilityEventUnchecked(event);
7001    }
7002
7003    @Override
7004    protected void onCreateContextMenu(ContextMenu menu) {
7005        super.onCreateContextMenu(menu);
7006        boolean added = false;
7007
7008        if (!isFocused()) {
7009            if (isFocusable() && mInput != null) {
7010                if (canCopy()) {
7011                    MenuHandler handler = new MenuHandler();
7012                    int name = com.android.internal.R.string.copyAll;
7013
7014                    menu.add(0, ID_COPY, 0, name).
7015                        setOnMenuItemClickListener(handler).
7016                        setAlphabeticShortcut('c');
7017                    menu.setHeaderTitle(com.android.internal.R.string.
7018                        editTextMenuTitle);
7019                }
7020            }
7021
7022            return;
7023        }
7024
7025        MenuHandler handler = new MenuHandler();
7026
7027        if (canSelectAll()) {
7028            menu.add(0, ID_SELECT_ALL, 0,
7029                    com.android.internal.R.string.selectAll).
7030                setOnMenuItemClickListener(handler).
7031                setAlphabeticShortcut('a');
7032            added = true;
7033        }
7034
7035        boolean selection = getSelectionStart() != getSelectionEnd();
7036
7037        if (canSelectText()) {
7038            if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) {
7039                menu.add(0, ID_STOP_SELECTING_TEXT, 0,
7040                        com.android.internal.R.string.stopSelectingText).
7041                    setOnMenuItemClickListener(handler);
7042                added = true;
7043            } else {
7044                menu.add(0, ID_START_SELECTING_TEXT, 0,
7045                        com.android.internal.R.string.selectText).
7046                    setOnMenuItemClickListener(handler);
7047                added = true;
7048            }
7049        }
7050
7051        if (canCut()) {
7052            int name;
7053            if (selection) {
7054                name = com.android.internal.R.string.cut;
7055            } else {
7056                name = com.android.internal.R.string.cutAll;
7057            }
7058
7059            menu.add(0, ID_CUT, 0, name).
7060                setOnMenuItemClickListener(handler).
7061                setAlphabeticShortcut('x');
7062            added = true;
7063        }
7064
7065        if (canCopy()) {
7066            int name;
7067            if (selection) {
7068                name = com.android.internal.R.string.copy;
7069            } else {
7070                name = com.android.internal.R.string.copyAll;
7071            }
7072
7073            menu.add(0, ID_COPY, 0, name).
7074                setOnMenuItemClickListener(handler).
7075                setAlphabeticShortcut('c');
7076            added = true;
7077        }
7078
7079        if (canPaste()) {
7080            menu.add(0, ID_PASTE, 0, com.android.internal.R.string.paste).
7081                    setOnMenuItemClickListener(handler).
7082                    setAlphabeticShortcut('v');
7083            added = true;
7084        }
7085
7086        if (mText instanceof Spanned) {
7087            int selStart = getSelectionStart();
7088            int selEnd = getSelectionEnd();
7089
7090            int min = Math.min(selStart, selEnd);
7091            int max = Math.max(selStart, selEnd);
7092
7093            URLSpan[] urls = ((Spanned) mText).getSpans(min, max,
7094                                                        URLSpan.class);
7095            if (urls.length == 1) {
7096                menu.add(0, ID_COPY_URL, 0,
7097                         com.android.internal.R.string.copyUrl).
7098                            setOnMenuItemClickListener(handler);
7099                added = true;
7100            }
7101        }
7102
7103        if (isInputMethodTarget()) {
7104            menu.add(1, ID_SWITCH_INPUT_METHOD, 0, com.android.internal.R.string.inputMethod).
7105                    setOnMenuItemClickListener(handler);
7106            added = true;
7107        }
7108
7109        String word = getWordForDictionary();
7110        if (word != null) {
7111            menu.add(1, ID_ADD_TO_DICTIONARY, 0,
7112                     getContext().getString(com.android.internal.R.string.addToDictionary, word)).
7113                    setOnMenuItemClickListener(handler);
7114            added = true;
7115
7116        }
7117
7118        if (added) {
7119            menu.setHeaderTitle(com.android.internal.R.string.editTextMenuTitle);
7120        }
7121    }
7122
7123    /**
7124     * Returns whether this text view is a current input method target.  The
7125     * default implementation just checks with {@link InputMethodManager}.
7126     */
7127    public boolean isInputMethodTarget() {
7128        InputMethodManager imm = InputMethodManager.peekInstance();
7129        return imm != null && imm.isActive(this);
7130    }
7131
7132    private static final int ID_SELECT_ALL = android.R.id.selectAll;
7133    private static final int ID_START_SELECTING_TEXT = android.R.id.startSelectingText;
7134    private static final int ID_STOP_SELECTING_TEXT = android.R.id.stopSelectingText;
7135    private static final int ID_CUT = android.R.id.cut;
7136    private static final int ID_COPY = android.R.id.copy;
7137    private static final int ID_PASTE = android.R.id.paste;
7138    private static final int ID_COPY_URL = android.R.id.copyUrl;
7139    private static final int ID_SWITCH_INPUT_METHOD = android.R.id.switchInputMethod;
7140    private static final int ID_ADD_TO_DICTIONARY = android.R.id.addToDictionary;
7141
7142    private class MenuHandler implements MenuItem.OnMenuItemClickListener {
7143        public boolean onMenuItemClick(MenuItem item) {
7144            return onTextContextMenuItem(item.getItemId());
7145        }
7146    }
7147
7148    /**
7149     * Called when a context menu option for the text view is selected.  Currently
7150     * this will be one of: {@link android.R.id#selectAll},
7151     * {@link android.R.id#startSelectingText}, {@link android.R.id#stopSelectingText},
7152     * {@link android.R.id#cut}, {@link android.R.id#copy},
7153     * {@link android.R.id#paste}, {@link android.R.id#copyUrl},
7154     * or {@link android.R.id#switchInputMethod}.
7155     */
7156    public boolean onTextContextMenuItem(int id) {
7157        int selStart = getSelectionStart();
7158        int selEnd = getSelectionEnd();
7159
7160        if (!isFocused()) {
7161            selStart = 0;
7162            selEnd = mText.length();
7163        }
7164
7165        int min = Math.min(selStart, selEnd);
7166        int max = Math.max(selStart, selEnd);
7167
7168        if (min < 0) {
7169            min = 0;
7170        }
7171        if (max < 0) {
7172            max = 0;
7173        }
7174
7175        ClipboardManager clip = (ClipboardManager)getContext()
7176                .getSystemService(Context.CLIPBOARD_SERVICE);
7177
7178        switch (id) {
7179            case ID_SELECT_ALL:
7180                Selection.setSelection((Spannable) mText, 0,
7181                        mText.length());
7182                return true;
7183
7184            case ID_START_SELECTING_TEXT:
7185                MetaKeyKeyListener.startSelecting(this, (Spannable) mText);
7186                return true;
7187
7188            case ID_STOP_SELECTING_TEXT:
7189                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7190                Selection.setSelection((Spannable) mText, getSelectionEnd());
7191                return true;
7192
7193            case ID_CUT:
7194                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7195
7196                if (min == max) {
7197                    min = 0;
7198                    max = mText.length();
7199                }
7200
7201                clip.setText(mTransformed.subSequence(min, max));
7202                ((Editable) mText).delete(min, max);
7203                return true;
7204
7205            case ID_COPY:
7206                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7207
7208                if (min == max) {
7209                    min = 0;
7210                    max = mText.length();
7211                }
7212
7213                clip.setText(mTransformed.subSequence(min, max));
7214                return true;
7215
7216            case ID_PASTE:
7217                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7218
7219                CharSequence paste = clip.getText();
7220
7221                if (paste != null) {
7222                    Selection.setSelection((Spannable) mText, max);
7223                    ((Editable) mText).replace(min, max, paste);
7224                }
7225
7226                return true;
7227
7228            case ID_COPY_URL:
7229                MetaKeyKeyListener.stopSelecting(this, (Spannable) mText);
7230
7231                URLSpan[] urls = ((Spanned) mText).getSpans(min, max,
7232                                                       URLSpan.class);
7233                if (urls.length == 1) {
7234                    clip.setText(urls[0].getURL());
7235                }
7236
7237                return true;
7238
7239            case ID_SWITCH_INPUT_METHOD:
7240                InputMethodManager imm = InputMethodManager.peekInstance();
7241                if (imm != null) {
7242                    imm.showInputMethodPicker();
7243                }
7244                return true;
7245
7246            case ID_ADD_TO_DICTIONARY:
7247                String word = getWordForDictionary();
7248
7249                if (word != null) {
7250                    Intent i = new Intent("com.android.settings.USER_DICTIONARY_INSERT");
7251                    i.putExtra("word", word);
7252                    i.setFlags(i.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK);
7253                    getContext().startActivity(i);
7254                }
7255
7256                return true;
7257            }
7258
7259        return false;
7260    }
7261
7262    public boolean performLongClick() {
7263        if (super.performLongClick()) {
7264            mEatTouchRelease = true;
7265            return true;
7266        }
7267
7268        return false;
7269    }
7270
7271    @ViewDebug.ExportedProperty
7272    private CharSequence            mText;
7273    private CharSequence            mTransformed;
7274    private BufferType              mBufferType = BufferType.NORMAL;
7275
7276    private int                     mInputType = EditorInfo.TYPE_NULL;
7277    private CharSequence            mHint;
7278    private Layout                  mHintLayout;
7279
7280    private KeyListener             mInput;
7281
7282    private MovementMethod          mMovement;
7283    private TransformationMethod    mTransformation;
7284    private ChangeWatcher           mChangeWatcher;
7285
7286    private ArrayList<TextWatcher>  mListeners = null;
7287
7288    // display attributes
7289    private TextPaint               mTextPaint;
7290    private boolean                 mUserSetTextScaleX;
7291    private Paint                   mHighlightPaint;
7292    private int                     mHighlightColor = 0xFFBBDDFF;
7293    private Layout                  mLayout;
7294
7295    private long                    mShowCursor;
7296    private Blink                   mBlink;
7297    private boolean                 mCursorVisible = true;
7298
7299    private boolean                 mSelectAllOnFocus = false;
7300
7301    private int                     mGravity = Gravity.TOP | Gravity.LEFT;
7302    private boolean                 mHorizontallyScrolling;
7303
7304    private int                     mAutoLinkMask;
7305    private boolean                 mLinksClickable = true;
7306
7307    private float                   mSpacingMult = 1;
7308    private float                   mSpacingAdd = 0;
7309
7310    private static final int        LINES = 1;
7311    private static final int        EMS = LINES;
7312    private static final int        PIXELS = 2;
7313
7314    private int                     mMaximum = Integer.MAX_VALUE;
7315    private int                     mMaxMode = LINES;
7316    private int                     mMinimum = 0;
7317    private int                     mMinMode = LINES;
7318
7319    private int                     mMaxWidth = Integer.MAX_VALUE;
7320    private int                     mMaxWidthMode = PIXELS;
7321    private int                     mMinWidth = 0;
7322    private int                     mMinWidthMode = PIXELS;
7323
7324    private boolean                 mSingleLine;
7325    private int                     mDesiredHeightAtMeasure = -1;
7326    private boolean                 mIncludePad = true;
7327
7328    // tmp primitives, so we don't alloc them on each draw
7329    private Path                    mHighlightPath;
7330    private boolean                 mHighlightPathBogus = true;
7331    private static final RectF      sTempRect = new RectF();
7332
7333    // XXX should be much larger
7334    private static final int        VERY_WIDE = 16384;
7335
7336    private static final int        BLINK = 500;
7337
7338    private static final int ANIMATED_SCROLL_GAP = 250;
7339    private long mLastScroll;
7340    private Scroller mScroller = null;
7341
7342    private BoringLayout.Metrics mBoring;
7343    private BoringLayout.Metrics mHintBoring;
7344
7345    private BoringLayout mSavedLayout, mSavedHintLayout;
7346
7347    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
7348    private InputFilter[] mFilters = NO_FILTERS;
7349    private static final Spanned EMPTY_SPANNED = new SpannedString("");
7350}
7351