TextView.java revision 75beb336f4b164c3bed5d4b91f0b9c6ea49a3437 
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.R;
25import android.content.ClipData;
26import android.content.ClipData.Item;
27import android.content.ClipboardManager;
28import android.content.Context;
29import android.content.pm.PackageManager;
30import android.content.res.ColorStateList;
31import android.content.res.Resources;
32import android.content.res.TypedArray;
33import android.content.res.XmlResourceParser;
34import android.graphics.Canvas;
35import android.graphics.Color;
36import android.graphics.Paint;
37import android.graphics.Path;
38import android.graphics.Rect;
39import android.graphics.RectF;
40import android.graphics.Typeface;
41import android.graphics.drawable.Drawable;
42import android.inputmethodservice.ExtractEditText;
43import android.net.Uri;
44import android.os.Bundle;
45import android.os.Handler;
46import android.os.Message;
47import android.os.Parcel;
48import android.os.Parcelable;
49import android.os.SystemClock;
50import android.text.BoringLayout;
51import android.text.DynamicLayout;
52import android.text.Editable;
53import android.text.GetChars;
54import android.text.GraphicsOperations;
55import android.text.InputFilter;
56import android.text.InputType;
57import android.text.Layout;
58import android.text.ParcelableSpan;
59import android.text.Selection;
60import android.text.SpanWatcher;
61import android.text.Spannable;
62import android.text.SpannableString;
63import android.text.SpannableStringBuilder;
64import android.text.Spanned;
65import android.text.SpannedString;
66import android.text.StaticLayout;
67import android.text.TextPaint;
68import android.text.TextUtils;
69import android.text.TextWatcher;
70import android.text.method.ArrowKeyMovementMethod;
71import android.text.method.DateKeyListener;
72import android.text.method.DateTimeKeyListener;
73import android.text.method.DialerKeyListener;
74import android.text.method.DigitsKeyListener;
75import android.text.method.KeyListener;
76import android.text.method.LinkMovementMethod;
77import android.text.method.MetaKeyKeyListener;
78import android.text.method.MovementMethod;
79import android.text.method.PasswordTransformationMethod;
80import android.text.method.SingleLineTransformationMethod;
81import android.text.method.TextKeyListener;
82import android.text.method.TimeKeyListener;
83import android.text.method.TransformationMethod;
84import android.text.method.WordIterator;
85import android.text.style.ClickableSpan;
86import android.text.style.ParagraphStyle;
87import android.text.style.SuggestionSpan;
88import android.text.style.TextAppearanceSpan;
89import android.text.style.URLSpan;
90import android.text.style.UnderlineSpan;
91import android.text.style.UpdateAppearance;
92import android.text.util.Linkify;
93import android.util.AttributeSet;
94import android.util.DisplayMetrics;
95import android.util.FloatMath;
96import android.util.Log;
97import android.util.TypedValue;
98import android.view.ActionMode;
99import android.view.ActionMode.Callback;
100import android.view.ContextMenu;
101import android.view.DragEvent;
102import android.view.Gravity;
103import android.view.HapticFeedbackConstants;
104import android.view.KeyCharacterMap;
105import android.view.KeyEvent;
106import android.view.LayoutInflater;
107import android.view.Menu;
108import android.view.MenuItem;
109import android.view.MotionEvent;
110import android.view.View;
111import android.view.ViewConfiguration;
112import android.view.ViewDebug;
113import android.view.ViewGroup;
114import android.view.ViewGroup.LayoutParams;
115import android.view.ViewParent;
116import android.view.ViewRoot;
117import android.view.ViewTreeObserver;
118import android.view.WindowManager;
119import android.view.accessibility.AccessibilityEvent;
120import android.view.accessibility.AccessibilityManager;
121import android.view.animation.AnimationUtils;
122import android.view.inputmethod.BaseInputConnection;
123import android.view.inputmethod.CompletionInfo;
124import android.view.inputmethod.CorrectionInfo;
125import android.view.inputmethod.EditorInfo;
126import android.view.inputmethod.ExtractedText;
127import android.view.inputmethod.ExtractedTextRequest;
128import android.view.inputmethod.InputConnection;
129import android.view.inputmethod.InputMethodManager;
130import android.widget.RemoteViews.RemoteView;
131
132import java.io.IOException;
133import java.lang.ref.WeakReference;
134import java.text.BreakIterator;
135import java.util.ArrayList;
136
137/**
138 * Displays text to the user and optionally allows them to edit it.  A TextView
139 * is a complete text editor, however the basic class is configured to not
140 * allow editing; see {@link EditText} for a subclass that configures the text
141 * view for editing.
142 *
143 * <p>
144 * <b>XML attributes</b>
145 * <p>
146 * See {@link android.R.styleable#TextView TextView Attributes},
147 * {@link android.R.styleable#View View Attributes}
148 *
149 * @attr ref android.R.styleable#TextView_text
150 * @attr ref android.R.styleable#TextView_bufferType
151 * @attr ref android.R.styleable#TextView_hint
152 * @attr ref android.R.styleable#TextView_textColor
153 * @attr ref android.R.styleable#TextView_textColorHighlight
154 * @attr ref android.R.styleable#TextView_textColorHint
155 * @attr ref android.R.styleable#TextView_textAppearance
156 * @attr ref android.R.styleable#TextView_textColorLink
157 * @attr ref android.R.styleable#TextView_textSize
158 * @attr ref android.R.styleable#TextView_textScaleX
159 * @attr ref android.R.styleable#TextView_typeface
160 * @attr ref android.R.styleable#TextView_textStyle
161 * @attr ref android.R.styleable#TextView_cursorVisible
162 * @attr ref android.R.styleable#TextView_maxLines
163 * @attr ref android.R.styleable#TextView_maxHeight
164 * @attr ref android.R.styleable#TextView_lines
165 * @attr ref android.R.styleable#TextView_height
166 * @attr ref android.R.styleable#TextView_minLines
167 * @attr ref android.R.styleable#TextView_minHeight
168 * @attr ref android.R.styleable#TextView_maxEms
169 * @attr ref android.R.styleable#TextView_maxWidth
170 * @attr ref android.R.styleable#TextView_ems
171 * @attr ref android.R.styleable#TextView_width
172 * @attr ref android.R.styleable#TextView_minEms
173 * @attr ref android.R.styleable#TextView_minWidth
174 * @attr ref android.R.styleable#TextView_gravity
175 * @attr ref android.R.styleable#TextView_scrollHorizontally
176 * @attr ref android.R.styleable#TextView_password
177 * @attr ref android.R.styleable#TextView_singleLine
178 * @attr ref android.R.styleable#TextView_selectAllOnFocus
179 * @attr ref android.R.styleable#TextView_includeFontPadding
180 * @attr ref android.R.styleable#TextView_maxLength
181 * @attr ref android.R.styleable#TextView_shadowColor
182 * @attr ref android.R.styleable#TextView_shadowDx
183 * @attr ref android.R.styleable#TextView_shadowDy
184 * @attr ref android.R.styleable#TextView_shadowRadius
185 * @attr ref android.R.styleable#TextView_autoLink
186 * @attr ref android.R.styleable#TextView_linksClickable
187 * @attr ref android.R.styleable#TextView_numeric
188 * @attr ref android.R.styleable#TextView_digits
189 * @attr ref android.R.styleable#TextView_phoneNumber
190 * @attr ref android.R.styleable#TextView_inputMethod
191 * @attr ref android.R.styleable#TextView_capitalize
192 * @attr ref android.R.styleable#TextView_autoText
193 * @attr ref android.R.styleable#TextView_editable
194 * @attr ref android.R.styleable#TextView_freezesText
195 * @attr ref android.R.styleable#TextView_ellipsize
196 * @attr ref android.R.styleable#TextView_drawableTop
197 * @attr ref android.R.styleable#TextView_drawableBottom
198 * @attr ref android.R.styleable#TextView_drawableRight
199 * @attr ref android.R.styleable#TextView_drawableLeft
200 * @attr ref android.R.styleable#TextView_drawablePadding
201 * @attr ref android.R.styleable#TextView_lineSpacingExtra
202 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
203 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
204 * @attr ref android.R.styleable#TextView_inputType
205 * @attr ref android.R.styleable#TextView_imeOptions
206 * @attr ref android.R.styleable#TextView_privateImeOptions
207 * @attr ref android.R.styleable#TextView_imeActionLabel
208 * @attr ref android.R.styleable#TextView_imeActionId
209 * @attr ref android.R.styleable#TextView_editorExtras
210 */
211@RemoteView
212public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
213    static final String LOG_TAG = "TextView";
214    static final boolean DEBUG_EXTRACT = false;
215
216    private static final int PRIORITY = 100;
217    private int mCurrentAlpha = 255;
218
219    final int[] mTempCoords = new int[2];
220    Rect mTempRect;
221
222    private ColorStateList mTextColor;
223    private int mCurTextColor;
224    private ColorStateList mHintTextColor;
225    private ColorStateList mLinkTextColor;
226    private int mCurHintTextColor;
227    private boolean mFreezesText;
228    private boolean mFrozenWithFocus;
229    private boolean mTemporaryDetach;
230    private boolean mDispatchTemporaryDetach;
231
232    private boolean mDiscardNextActionUp = false;
233    private boolean mIgnoreActionUpEvent = false;
234
235    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
236    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
237
238    private float mShadowRadius, mShadowDx, mShadowDy;
239
240    private static final int PREDRAW_NOT_REGISTERED = 0;
241    private static final int PREDRAW_PENDING = 1;
242    private static final int PREDRAW_DONE = 2;
243    private int mPreDrawState = PREDRAW_NOT_REGISTERED;
244
245    private TextUtils.TruncateAt mEllipsize = null;
246
247    // Enum for the "typeface" XML parameter.
248    // TODO: How can we get this from the XML instead of hardcoding it here?
249    private static final int SANS = 1;
250    private static final int SERIF = 2;
251    private static final int MONOSPACE = 3;
252
253    // Bitfield for the "numeric" XML parameter.
254    // TODO: How can we get this from the XML instead of hardcoding it here?
255    private static final int SIGNED = 2;
256    private static final int DECIMAL = 4;
257
258    class Drawables {
259        final Rect mCompoundRect = new Rect();
260        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight;
261        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight;
262        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight;
263        int mDrawablePadding;
264    }
265    private Drawables mDrawables;
266
267    private CharSequence mError;
268    private boolean mErrorWasChanged;
269    private ErrorPopup mPopup;
270    /**
271     * This flag is set if the TextView tries to display an error before it
272     * is attached to the window (so its position is still unknown).
273     * It causes the error to be shown later, when onAttachedToWindow()
274     * is called.
275     */
276    private boolean mShowErrorAfterAttach;
277
278    private CharWrapper mCharWrapper = null;
279
280    private boolean mSelectionMoved = false;
281    private boolean mTouchFocusSelected = false;
282
283    private Marquee mMarquee;
284    private boolean mRestartMarquee;
285
286    private int mMarqueeRepeatLimit = 3;
287
288    class InputContentType {
289        int imeOptions = EditorInfo.IME_NULL;
290        String privateImeOptions;
291        CharSequence imeActionLabel;
292        int imeActionId;
293        Bundle extras;
294        OnEditorActionListener onEditorActionListener;
295        boolean enterDown;
296    }
297    InputContentType mInputContentType;
298
299    class InputMethodState {
300        Rect mCursorRectInWindow = new Rect();
301        RectF mTmpRectF = new RectF();
302        float[] mTmpOffset = new float[2];
303        ExtractedTextRequest mExtracting;
304        final ExtractedText mTmpExtracted = new ExtractedText();
305        int mBatchEditNesting;
306        boolean mCursorChanged;
307        boolean mSelectionModeChanged;
308        boolean mContentChanged;
309        int mChangedStart, mChangedEnd, mChangedDelta;
310    }
311    InputMethodState mInputMethodState;
312
313    private int mTextSelectHandleLeftRes;
314    private int mTextSelectHandleRightRes;
315    private int mTextSelectHandleRes;
316    private int mTextEditPasteWindowLayout, mTextEditSidePasteWindowLayout;
317    private int mTextEditNoPasteWindowLayout, mTextEditSideNoPasteWindowLayout;
318
319    private int mTextEditSuggestionsBottomWindowLayout, mTextEditSuggestionsTopWindowLayout;
320    private int mTextEditSuggestionItemLayout;
321    private SuggestionsPopupWindow mSuggestionsPopupWindow;
322    private SuggestionRangeSpan mSuggestionRangeSpan;
323
324    private int mCursorDrawableRes;
325    private final Drawable[] mCursorDrawable = new Drawable[2];
326    private int mCursorCount; // Actual current number of used mCursorDrawable: 0, 1 or 2
327
328    private Drawable mSelectHandleLeft;
329    private Drawable mSelectHandleRight;
330    private Drawable mSelectHandleCenter;
331
332    private int mLastDownPositionX, mLastDownPositionY;
333    private Callback mCustomSelectionActionModeCallback;
334
335    private final int mSquaredTouchSlopDistance;
336    // Set when this TextView gained focus with some text selected. Will start selection mode.
337    private boolean mCreatedWithASelection = false;
338
339    /*
340     * Kick-start the font cache for the zygote process (to pay the cost of
341     * initializing freetype for our default font only once).
342     */
343    static {
344        Paint p = new Paint();
345        p.setAntiAlias(true);
346        // We don't care about the result, just the side-effect of measuring.
347        p.measureText("H");
348    }
349
350    /**
351     * Interface definition for a callback to be invoked when an action is
352     * performed on the editor.
353     */
354    public interface OnEditorActionListener {
355        /**
356         * Called when an action is being performed.
357         *
358         * @param v The view that was clicked.
359         * @param actionId Identifier of the action.  This will be either the
360         * identifier you supplied, or {@link EditorInfo#IME_NULL
361         * EditorInfo.IME_NULL} if being called due to the enter key
362         * being pressed.
363         * @param event If triggered by an enter key, this is the event;
364         * otherwise, this is null.
365         * @return Return true if you have consumed the action, else false.
366         */
367        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
368    }
369
370    public TextView(Context context) {
371        this(context, null);
372    }
373
374    public TextView(Context context,
375                    AttributeSet attrs) {
376        this(context, attrs, com.android.internal.R.attr.textViewStyle);
377    }
378
379    @SuppressWarnings("deprecation")
380    public TextView(Context context,
381                    AttributeSet attrs,
382                    int defStyle) {
383        super(context, attrs, defStyle);
384        mText = "";
385
386        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
387        mTextPaint.density = getResources().getDisplayMetrics().density;
388        mTextPaint.setCompatibilityScaling(
389                getResources().getCompatibilityInfo().applicationScale);
390
391        // If we get the paint from the skin, we should set it to left, since
392        // the layout always wants it to be left.
393        // mTextPaint.setTextAlign(Paint.Align.LEFT);
394
395        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
396        mHighlightPaint.setCompatibilityScaling(
397                getResources().getCompatibilityInfo().applicationScale);
398
399        mMovement = getDefaultMovementMethod();
400        mTransformation = null;
401
402        TypedArray a =
403            context.obtainStyledAttributes(
404                attrs, com.android.internal.R.styleable.TextView, defStyle, 0);
405
406        int textColorHighlight = 0;
407        ColorStateList textColor = null;
408        ColorStateList textColorHint = null;
409        ColorStateList textColorLink = null;
410        int textSize = 15;
411        int typefaceIndex = -1;
412        int styleIndex = -1;
413
414        /*
415         * Look the appearance up without checking first if it exists because
416         * almost every TextView has one and it greatly simplifies the logic
417         * to be able to parse the appearance first and then let specific tags
418         * for this View override it.
419         */
420        TypedArray appearance = null;
421        int ap = a.getResourceId(com.android.internal.R.styleable.TextView_textAppearance, -1);
422        if (ap != -1) {
423            appearance = context.obtainStyledAttributes(ap,
424                                com.android.internal.R.styleable.
425                                TextAppearance);
426        }
427        if (appearance != null) {
428            int n = appearance.getIndexCount();
429            for (int i = 0; i < n; i++) {
430                int attr = appearance.getIndex(i);
431
432                switch (attr) {
433                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
434                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
435                    break;
436
437                case com.android.internal.R.styleable.TextAppearance_textColor:
438                    textColor = appearance.getColorStateList(attr);
439                    break;
440
441                case com.android.internal.R.styleable.TextAppearance_textColorHint:
442                    textColorHint = appearance.getColorStateList(attr);
443                    break;
444
445                case com.android.internal.R.styleable.TextAppearance_textColorLink:
446                    textColorLink = appearance.getColorStateList(attr);
447                    break;
448
449                case com.android.internal.R.styleable.TextAppearance_textSize:
450                    textSize = appearance.getDimensionPixelSize(attr, textSize);
451                    break;
452
453                case com.android.internal.R.styleable.TextAppearance_typeface:
454                    typefaceIndex = appearance.getInt(attr, -1);
455                    break;
456
457                case com.android.internal.R.styleable.TextAppearance_textStyle:
458                    styleIndex = appearance.getInt(attr, -1);
459                    break;
460                }
461            }
462
463            appearance.recycle();
464        }
465
466        boolean editable = getDefaultEditable();
467        CharSequence inputMethod = null;
468        int numeric = 0;
469        CharSequence digits = null;
470        boolean phone = false;
471        boolean autotext = false;
472        int autocap = -1;
473        int buffertype = 0;
474        boolean selectallonfocus = false;
475        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
476            drawableBottom = null;
477        int drawablePadding = 0;
478        int ellipsize = -1;
479        boolean singleLine = false;
480        int maxlength = -1;
481        CharSequence text = "";
482        CharSequence hint = null;
483        int shadowcolor = 0;
484        float dx = 0, dy = 0, r = 0;
485        boolean password = false;
486        int inputType = EditorInfo.TYPE_NULL;
487
488        int n = a.getIndexCount();
489        for (int i = 0; i < n; i++) {
490            int attr = a.getIndex(i);
491
492            switch (attr) {
493            case com.android.internal.R.styleable.TextView_editable:
494                editable = a.getBoolean(attr, editable);
495                break;
496
497            case com.android.internal.R.styleable.TextView_inputMethod:
498                inputMethod = a.getText(attr);
499                break;
500
501            case com.android.internal.R.styleable.TextView_numeric:
502                numeric = a.getInt(attr, numeric);
503                break;
504
505            case com.android.internal.R.styleable.TextView_digits:
506                digits = a.getText(attr);
507                break;
508
509            case com.android.internal.R.styleable.TextView_phoneNumber:
510                phone = a.getBoolean(attr, phone);
511                break;
512
513            case com.android.internal.R.styleable.TextView_autoText:
514                autotext = a.getBoolean(attr, autotext);
515                break;
516
517            case com.android.internal.R.styleable.TextView_capitalize:
518                autocap = a.getInt(attr, autocap);
519                break;
520
521            case com.android.internal.R.styleable.TextView_bufferType:
522                buffertype = a.getInt(attr, buffertype);
523                break;
524
525            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
526                selectallonfocus = a.getBoolean(attr, selectallonfocus);
527                break;
528
529            case com.android.internal.R.styleable.TextView_autoLink:
530                mAutoLinkMask = a.getInt(attr, 0);
531                break;
532
533            case com.android.internal.R.styleable.TextView_linksClickable:
534                mLinksClickable = a.getBoolean(attr, true);
535                break;
536
537            case com.android.internal.R.styleable.TextView_drawableLeft:
538                drawableLeft = a.getDrawable(attr);
539                break;
540
541            case com.android.internal.R.styleable.TextView_drawableTop:
542                drawableTop = a.getDrawable(attr);
543                break;
544
545            case com.android.internal.R.styleable.TextView_drawableRight:
546                drawableRight = a.getDrawable(attr);
547                break;
548
549            case com.android.internal.R.styleable.TextView_drawableBottom:
550                drawableBottom = a.getDrawable(attr);
551                break;
552
553            case com.android.internal.R.styleable.TextView_drawablePadding:
554                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
555                break;
556
557            case com.android.internal.R.styleable.TextView_maxLines:
558                setMaxLines(a.getInt(attr, -1));
559                break;
560
561            case com.android.internal.R.styleable.TextView_maxHeight:
562                setMaxHeight(a.getDimensionPixelSize(attr, -1));
563                break;
564
565            case com.android.internal.R.styleable.TextView_lines:
566                setLines(a.getInt(attr, -1));
567                break;
568
569            case com.android.internal.R.styleable.TextView_height:
570                setHeight(a.getDimensionPixelSize(attr, -1));
571                break;
572
573            case com.android.internal.R.styleable.TextView_minLines:
574                setMinLines(a.getInt(attr, -1));
575                break;
576
577            case com.android.internal.R.styleable.TextView_minHeight:
578                setMinHeight(a.getDimensionPixelSize(attr, -1));
579                break;
580
581            case com.android.internal.R.styleable.TextView_maxEms:
582                setMaxEms(a.getInt(attr, -1));
583                break;
584
585            case com.android.internal.R.styleable.TextView_maxWidth:
586                setMaxWidth(a.getDimensionPixelSize(attr, -1));
587                break;
588
589            case com.android.internal.R.styleable.TextView_ems:
590                setEms(a.getInt(attr, -1));
591                break;
592
593            case com.android.internal.R.styleable.TextView_width:
594                setWidth(a.getDimensionPixelSize(attr, -1));
595                break;
596
597            case com.android.internal.R.styleable.TextView_minEms:
598                setMinEms(a.getInt(attr, -1));
599                break;
600
601            case com.android.internal.R.styleable.TextView_minWidth:
602                setMinWidth(a.getDimensionPixelSize(attr, -1));
603                break;
604
605            case com.android.internal.R.styleable.TextView_gravity:
606                setGravity(a.getInt(attr, -1));
607                break;
608
609            case com.android.internal.R.styleable.TextView_hint:
610                hint = a.getText(attr);
611                break;
612
613            case com.android.internal.R.styleable.TextView_text:
614                text = a.getText(attr);
615                break;
616
617            case com.android.internal.R.styleable.TextView_scrollHorizontally:
618                if (a.getBoolean(attr, false)) {
619                    setHorizontallyScrolling(true);
620                }
621                break;
622
623            case com.android.internal.R.styleable.TextView_singleLine:
624                singleLine = a.getBoolean(attr, singleLine);
625                break;
626
627            case com.android.internal.R.styleable.TextView_ellipsize:
628                ellipsize = a.getInt(attr, ellipsize);
629                break;
630
631            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
632                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
633                break;
634
635            case com.android.internal.R.styleable.TextView_includeFontPadding:
636                if (!a.getBoolean(attr, true)) {
637                    setIncludeFontPadding(false);
638                }
639                break;
640
641            case com.android.internal.R.styleable.TextView_cursorVisible:
642                if (!a.getBoolean(attr, true)) {
643                    setCursorVisible(false);
644                }
645                break;
646
647            case com.android.internal.R.styleable.TextView_maxLength:
648                maxlength = a.getInt(attr, -1);
649                break;
650
651            case com.android.internal.R.styleable.TextView_textScaleX:
652                setTextScaleX(a.getFloat(attr, 1.0f));
653                break;
654
655            case com.android.internal.R.styleable.TextView_freezesText:
656                mFreezesText = a.getBoolean(attr, false);
657                break;
658
659            case com.android.internal.R.styleable.TextView_shadowColor:
660                shadowcolor = a.getInt(attr, 0);
661                break;
662
663            case com.android.internal.R.styleable.TextView_shadowDx:
664                dx = a.getFloat(attr, 0);
665                break;
666
667            case com.android.internal.R.styleable.TextView_shadowDy:
668                dy = a.getFloat(attr, 0);
669                break;
670
671            case com.android.internal.R.styleable.TextView_shadowRadius:
672                r = a.getFloat(attr, 0);
673                break;
674
675            case com.android.internal.R.styleable.TextView_enabled:
676                setEnabled(a.getBoolean(attr, isEnabled()));
677                break;
678
679            case com.android.internal.R.styleable.TextView_textColorHighlight:
680                textColorHighlight = a.getColor(attr, textColorHighlight);
681                break;
682
683            case com.android.internal.R.styleable.TextView_textColor:
684                textColor = a.getColorStateList(attr);
685                break;
686
687            case com.android.internal.R.styleable.TextView_textColorHint:
688                textColorHint = a.getColorStateList(attr);
689                break;
690
691            case com.android.internal.R.styleable.TextView_textColorLink:
692                textColorLink = a.getColorStateList(attr);
693                break;
694
695            case com.android.internal.R.styleable.TextView_textSize:
696                textSize = a.getDimensionPixelSize(attr, textSize);
697                break;
698
699            case com.android.internal.R.styleable.TextView_typeface:
700                typefaceIndex = a.getInt(attr, typefaceIndex);
701                break;
702
703            case com.android.internal.R.styleable.TextView_textStyle:
704                styleIndex = a.getInt(attr, styleIndex);
705                break;
706
707            case com.android.internal.R.styleable.TextView_password:
708                password = a.getBoolean(attr, password);
709                break;
710
711            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
712                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
713                break;
714
715            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
716                mSpacingMult = a.getFloat(attr, mSpacingMult);
717                break;
718
719            case com.android.internal.R.styleable.TextView_inputType:
720                inputType = a.getInt(attr, mInputType);
721                break;
722
723            case com.android.internal.R.styleable.TextView_imeOptions:
724                if (mInputContentType == null) {
725                    mInputContentType = new InputContentType();
726                }
727                mInputContentType.imeOptions = a.getInt(attr,
728                        mInputContentType.imeOptions);
729                break;
730
731            case com.android.internal.R.styleable.TextView_imeActionLabel:
732                if (mInputContentType == null) {
733                    mInputContentType = new InputContentType();
734                }
735                mInputContentType.imeActionLabel = a.getText(attr);
736                break;
737
738            case com.android.internal.R.styleable.TextView_imeActionId:
739                if (mInputContentType == null) {
740                    mInputContentType = new InputContentType();
741                }
742                mInputContentType.imeActionId = a.getInt(attr,
743                        mInputContentType.imeActionId);
744                break;
745
746            case com.android.internal.R.styleable.TextView_privateImeOptions:
747                setPrivateImeOptions(a.getString(attr));
748                break;
749
750            case com.android.internal.R.styleable.TextView_editorExtras:
751                try {
752                    setInputExtras(a.getResourceId(attr, 0));
753                } catch (XmlPullParserException e) {
754                    Log.w(LOG_TAG, "Failure reading input extras", e);
755                } catch (IOException e) {
756                    Log.w(LOG_TAG, "Failure reading input extras", e);
757                }
758                break;
759
760            case com.android.internal.R.styleable.TextView_textCursorDrawable:
761                mCursorDrawableRes = a.getResourceId(attr, 0);
762                break;
763
764            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
765                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
766                break;
767
768            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
769                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
770                break;
771
772            case com.android.internal.R.styleable.TextView_textSelectHandle:
773                mTextSelectHandleRes = a.getResourceId(attr, 0);
774                break;
775
776            case com.android.internal.R.styleable.TextView_textEditPasteWindowLayout:
777                mTextEditPasteWindowLayout = a.getResourceId(attr, 0);
778                break;
779
780            case com.android.internal.R.styleable.TextView_textEditNoPasteWindowLayout:
781                mTextEditNoPasteWindowLayout = a.getResourceId(attr, 0);
782                break;
783
784            case com.android.internal.R.styleable.TextView_textEditSidePasteWindowLayout:
785                mTextEditSidePasteWindowLayout = a.getResourceId(attr, 0);
786                break;
787
788            case com.android.internal.R.styleable.TextView_textEditSideNoPasteWindowLayout:
789                mTextEditSideNoPasteWindowLayout = a.getResourceId(attr, 0);
790                break;
791
792            case com.android.internal.R.styleable.TextView_textEditSuggestionsBottomWindowLayout:
793                mTextEditSuggestionsBottomWindowLayout = a.getResourceId(attr, 0);
794                break;
795
796            case com.android.internal.R.styleable.TextView_textEditSuggestionsTopWindowLayout:
797                mTextEditSuggestionsTopWindowLayout = a.getResourceId(attr, 0);
798                break;
799
800            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
801                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
802                break;
803
804            case com.android.internal.R.styleable.TextView_textIsSelectable:
805                mTextIsSelectable = a.getBoolean(attr, false);
806                break;
807            }
808        }
809        a.recycle();
810
811        BufferType bufferType = BufferType.EDITABLE;
812
813        final int variation =
814                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
815        final boolean passwordInputType = variation
816                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
817        final boolean webPasswordInputType = variation
818                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
819        final boolean numberPasswordInputType = variation
820                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
821
822        if (inputMethod != null) {
823            Class<?> c;
824
825            try {
826                c = Class.forName(inputMethod.toString());
827            } catch (ClassNotFoundException ex) {
828                throw new RuntimeException(ex);
829            }
830
831            try {
832                mInput = (KeyListener) c.newInstance();
833            } catch (InstantiationException ex) {
834                throw new RuntimeException(ex);
835            } catch (IllegalAccessException ex) {
836                throw new RuntimeException(ex);
837            }
838            try {
839                mInputType = inputType != EditorInfo.TYPE_NULL
840                        ? inputType
841                        : mInput.getInputType();
842            } catch (IncompatibleClassChangeError e) {
843                mInputType = EditorInfo.TYPE_CLASS_TEXT;
844            }
845        } else if (digits != null) {
846            mInput = DigitsKeyListener.getInstance(digits.toString());
847            // If no input type was specified, we will default to generic
848            // text, since we can't tell the IME about the set of digits
849            // that was selected.
850            mInputType = inputType != EditorInfo.TYPE_NULL
851                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
852        } else if (inputType != EditorInfo.TYPE_NULL) {
853            setInputType(inputType, true);
854            // If set, the input type overrides what was set using the deprecated singleLine flag.
855            singleLine = !isMultilineInputType(inputType);
856        } else if (phone) {
857            mInput = DialerKeyListener.getInstance();
858            mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
859        } else if (numeric != 0) {
860            mInput = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
861                                                   (numeric & DECIMAL) != 0);
862            inputType = EditorInfo.TYPE_CLASS_NUMBER;
863            if ((numeric & SIGNED) != 0) {
864                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
865            }
866            if ((numeric & DECIMAL) != 0) {
867                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
868            }
869            mInputType = inputType;
870        } else if (autotext || autocap != -1) {
871            TextKeyListener.Capitalize cap;
872
873            inputType = EditorInfo.TYPE_CLASS_TEXT;
874
875            switch (autocap) {
876            case 1:
877                cap = TextKeyListener.Capitalize.SENTENCES;
878                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
879                break;
880
881            case 2:
882                cap = TextKeyListener.Capitalize.WORDS;
883                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
884                break;
885
886            case 3:
887                cap = TextKeyListener.Capitalize.CHARACTERS;
888                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
889                break;
890
891            default:
892                cap = TextKeyListener.Capitalize.NONE;
893                break;
894            }
895
896            mInput = TextKeyListener.getInstance(autotext, cap);
897            mInputType = inputType;
898        } else if (mTextIsSelectable) {
899            // Prevent text changes from keyboard.
900            mInputType = EditorInfo.TYPE_NULL;
901            mInput = null;
902            bufferType = BufferType.SPANNABLE;
903            // Required to request focus while in touch mode.
904            setFocusableInTouchMode(true);
905            // So that selection can be changed using arrow keys and touch is handled.
906            setMovementMethod(ArrowKeyMovementMethod.getInstance());
907        } else if (editable) {
908            mInput = TextKeyListener.getInstance();
909            mInputType = EditorInfo.TYPE_CLASS_TEXT;
910        } else {
911            mInput = null;
912
913            switch (buffertype) {
914                case 0:
915                    bufferType = BufferType.NORMAL;
916                    break;
917                case 1:
918                    bufferType = BufferType.SPANNABLE;
919                    break;
920                case 2:
921                    bufferType = BufferType.EDITABLE;
922                    break;
923            }
924        }
925
926        // mInputType has been set from inputType, possibly modified by mInputMethod.
927        // Specialize mInputType to [web]password if we have a text class and the original input
928        // type was a password.
929        if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
930            if (password || passwordInputType) {
931                mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
932                        | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD;
933            }
934            if (webPasswordInputType) {
935                mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
936                        | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD;
937            }
938        } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) {
939            if (numberPasswordInputType) {
940                mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
941                        | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD;
942            }
943        }
944
945        if (selectallonfocus) {
946            mSelectAllOnFocus = true;
947
948            if (bufferType == BufferType.NORMAL)
949                bufferType = BufferType.SPANNABLE;
950        }
951
952        setCompoundDrawablesWithIntrinsicBounds(
953            drawableLeft, drawableTop, drawableRight, drawableBottom);
954        setCompoundDrawablePadding(drawablePadding);
955
956        // Same as setSingleLine(), but make sure the transformation method and the maximum number
957        // of lines of height are unchanged for multi-line TextViews.
958        setInputTypeSingleLine(singleLine);
959        applySingleLine(singleLine, singleLine, singleLine);
960
961        if (singleLine && mInput == null && ellipsize < 0) {
962                ellipsize = 3; // END
963        }
964
965        switch (ellipsize) {
966            case 1:
967                setEllipsize(TextUtils.TruncateAt.START);
968                break;
969            case 2:
970                setEllipsize(TextUtils.TruncateAt.MIDDLE);
971                break;
972            case 3:
973                setEllipsize(TextUtils.TruncateAt.END);
974                break;
975            case 4:
976                setHorizontalFadingEdgeEnabled(true);
977                setEllipsize(TextUtils.TruncateAt.MARQUEE);
978                break;
979        }
980
981        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
982        setHintTextColor(textColorHint);
983        setLinkTextColor(textColorLink);
984        if (textColorHighlight != 0) {
985            setHighlightColor(textColorHighlight);
986        }
987        setRawTextSize(textSize);
988
989        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
990            setTransformationMethod(PasswordTransformationMethod.getInstance());
991            typefaceIndex = MONOSPACE;
992        } else if ((mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
993                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
994            typefaceIndex = MONOSPACE;
995        }
996
997        setTypefaceByIndex(typefaceIndex, styleIndex);
998
999        if (shadowcolor != 0) {
1000            setShadowLayer(r, dx, dy, shadowcolor);
1001        }
1002
1003        if (maxlength >= 0) {
1004            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1005        } else {
1006            setFilters(NO_FILTERS);
1007        }
1008
1009        setText(text, bufferType);
1010        if (hint != null) setHint(hint);
1011
1012        /*
1013         * Views are not normally focusable unless specified to be.
1014         * However, TextViews that have input or movement methods *are*
1015         * focusable by default.
1016         */
1017        a = context.obtainStyledAttributes(attrs,
1018                                           com.android.internal.R.styleable.View,
1019                                           defStyle, 0);
1020
1021        boolean focusable = mMovement != null || mInput != null;
1022        boolean clickable = focusable;
1023        boolean longClickable = focusable;
1024
1025        n = a.getIndexCount();
1026        for (int i = 0; i < n; i++) {
1027            int attr = a.getIndex(i);
1028
1029            switch (attr) {
1030            case com.android.internal.R.styleable.View_focusable:
1031                focusable = a.getBoolean(attr, focusable);
1032                break;
1033
1034            case com.android.internal.R.styleable.View_clickable:
1035                clickable = a.getBoolean(attr, clickable);
1036                break;
1037
1038            case com.android.internal.R.styleable.View_longClickable:
1039                longClickable = a.getBoolean(attr, longClickable);
1040                break;
1041            }
1042        }
1043        a.recycle();
1044
1045        setFocusable(focusable);
1046        setClickable(clickable);
1047        setLongClickable(longClickable);
1048
1049        prepareCursorControllers();
1050
1051        final ViewConfiguration viewConfiguration = ViewConfiguration.get(context);
1052        final int touchSlop = viewConfiguration.getScaledTouchSlop();
1053        mSquaredTouchSlopDistance = touchSlop * touchSlop;
1054    }
1055
1056    private void setTypefaceByIndex(int typefaceIndex, int styleIndex) {
1057        Typeface tf = null;
1058        switch (typefaceIndex) {
1059            case SANS:
1060                tf = Typeface.SANS_SERIF;
1061                break;
1062
1063            case SERIF:
1064                tf = Typeface.SERIF;
1065                break;
1066
1067            case MONOSPACE:
1068                tf = Typeface.MONOSPACE;
1069                break;
1070        }
1071
1072        setTypeface(tf, styleIndex);
1073    }
1074
1075    @Override
1076    public void setEnabled(boolean enabled) {
1077        if (enabled == isEnabled()) {
1078            return;
1079        }
1080
1081        if (!enabled) {
1082            // Hide the soft input if the currently active TextView is disabled
1083            InputMethodManager imm = InputMethodManager.peekInstance();
1084            if (imm != null && imm.isActive(this)) {
1085                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1086            }
1087        }
1088        super.setEnabled(enabled);
1089    }
1090
1091    /**
1092     * Sets the typeface and style in which the text should be displayed,
1093     * and turns on the fake bold and italic bits in the Paint if the
1094     * Typeface that you provided does not have all the bits in the
1095     * style that you specified.
1096     *
1097     * @attr ref android.R.styleable#TextView_typeface
1098     * @attr ref android.R.styleable#TextView_textStyle
1099     */
1100    public void setTypeface(Typeface tf, int style) {
1101        if (style > 0) {
1102            if (tf == null) {
1103                tf = Typeface.defaultFromStyle(style);
1104            } else {
1105                tf = Typeface.create(tf, style);
1106            }
1107
1108            setTypeface(tf);
1109            // now compute what (if any) algorithmic styling is needed
1110            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1111            int need = style & ~typefaceStyle;
1112            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1113            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1114        } else {
1115            mTextPaint.setFakeBoldText(false);
1116            mTextPaint.setTextSkewX(0);
1117            setTypeface(tf);
1118        }
1119    }
1120
1121    /**
1122     * Subclasses override this to specify that they have a KeyListener
1123     * by default even if not specifically called for in the XML options.
1124     */
1125    protected boolean getDefaultEditable() {
1126        return false;
1127    }
1128
1129    /**
1130     * Subclasses override this to specify a default movement method.
1131     */
1132    protected MovementMethod getDefaultMovementMethod() {
1133        return null;
1134    }
1135
1136    /**
1137     * Return the text the TextView is displaying. If setText() was called with
1138     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1139     * the return value from this method to Spannable or Editable, respectively.
1140     *
1141     * Note: The content of the return value should not be modified. If you want
1142     * a modifiable one, you should make your own copy first.
1143     */
1144    @ViewDebug.CapturedViewProperty
1145    public CharSequence getText() {
1146        return mText;
1147    }
1148
1149    /**
1150     * Returns the length, in characters, of the text managed by this TextView
1151     */
1152    public int length() {
1153        return mText.length();
1154    }
1155
1156    /**
1157     * Return the text the TextView is displaying as an Editable object.  If
1158     * the text is not editable, null is returned.
1159     *
1160     * @see #getText
1161     */
1162    public Editable getEditableText() {
1163        return (mText instanceof Editable) ? (Editable)mText : null;
1164    }
1165
1166    /**
1167     * @return the height of one standard line in pixels.  Note that markup
1168     * within the text can cause individual lines to be taller or shorter
1169     * than this height, and the layout may contain additional first-
1170     * or last-line padding.
1171     */
1172    public int getLineHeight() {
1173        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1174    }
1175
1176    /**
1177     * @return the Layout that is currently being used to display the text.
1178     * This can be null if the text or width has recently changes.
1179     */
1180    public final Layout getLayout() {
1181        return mLayout;
1182    }
1183
1184    /**
1185     * @return the current key listener for this TextView.
1186     * This will frequently be null for non-EditText TextViews.
1187     */
1188    public final KeyListener getKeyListener() {
1189        return mInput;
1190    }
1191
1192    /**
1193     * Sets the key listener to be used with this TextView.  This can be null
1194     * to disallow user input.  Note that this method has significant and
1195     * subtle interactions with soft keyboards and other input method:
1196     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1197     * for important details.  Calling this method will replace the current
1198     * content type of the text view with the content type returned by the
1199     * key listener.
1200     * <p>
1201     * Be warned that if you want a TextView with a key listener or movement
1202     * method not to be focusable, or if you want a TextView without a
1203     * key listener or movement method to be focusable, you must call
1204     * {@link #setFocusable} again after calling this to get the focusability
1205     * back the way you want it.
1206     *
1207     * @attr ref android.R.styleable#TextView_numeric
1208     * @attr ref android.R.styleable#TextView_digits
1209     * @attr ref android.R.styleable#TextView_phoneNumber
1210     * @attr ref android.R.styleable#TextView_inputMethod
1211     * @attr ref android.R.styleable#TextView_capitalize
1212     * @attr ref android.R.styleable#TextView_autoText
1213     */
1214    public void setKeyListener(KeyListener input) {
1215        setKeyListenerOnly(input);
1216        fixFocusableAndClickableSettings();
1217
1218        if (input != null) {
1219            try {
1220                mInputType = mInput.getInputType();
1221            } catch (IncompatibleClassChangeError e) {
1222                mInputType = EditorInfo.TYPE_CLASS_TEXT;
1223            }
1224            // Change inputType, without affecting transformation.
1225            // No need to applySingleLine since mSingleLine is unchanged.
1226            setInputTypeSingleLine(mSingleLine);
1227        } else {
1228            mInputType = EditorInfo.TYPE_NULL;
1229        }
1230
1231        InputMethodManager imm = InputMethodManager.peekInstance();
1232        if (imm != null) imm.restartInput(this);
1233    }
1234
1235    private void setKeyListenerOnly(KeyListener input) {
1236        mInput = input;
1237        if (mInput != null && !(mText instanceof Editable))
1238            setText(mText);
1239
1240        setFilters((Editable) mText, mFilters);
1241    }
1242
1243    /**
1244     * @return the movement method being used for this TextView.
1245     * This will frequently be null for non-EditText TextViews.
1246     */
1247    public final MovementMethod getMovementMethod() {
1248        return mMovement;
1249    }
1250
1251    /**
1252     * Sets the movement method (arrow key handler) to be used for
1253     * this TextView.  This can be null to disallow using the arrow keys
1254     * to move the cursor or scroll the view.
1255     * <p>
1256     * Be warned that if you want a TextView with a key listener or movement
1257     * method not to be focusable, or if you want a TextView without a
1258     * key listener or movement method to be focusable, you must call
1259     * {@link #setFocusable} again after calling this to get the focusability
1260     * back the way you want it.
1261     */
1262    public final void setMovementMethod(MovementMethod movement) {
1263        mMovement = movement;
1264
1265        if (mMovement != null && !(mText instanceof Spannable))
1266            setText(mText);
1267
1268        fixFocusableAndClickableSettings();
1269
1270        // SelectionModifierCursorController depends on textCanBeSelected, which depends on mMovement
1271        prepareCursorControllers();
1272    }
1273
1274    private void fixFocusableAndClickableSettings() {
1275        if ((mMovement != null) || mInput != null) {
1276            setFocusable(true);
1277            setClickable(true);
1278            setLongClickable(true);
1279        } else {
1280            setFocusable(false);
1281            setClickable(false);
1282            setLongClickable(false);
1283        }
1284    }
1285
1286    /**
1287     * @return the current transformation method for this TextView.
1288     * This will frequently be null except for single-line and password
1289     * fields.
1290     */
1291    public final TransformationMethod getTransformationMethod() {
1292        return mTransformation;
1293    }
1294
1295    /**
1296     * Sets the transformation that is applied to the text that this
1297     * TextView is displaying.
1298     *
1299     * @attr ref android.R.styleable#TextView_password
1300     * @attr ref android.R.styleable#TextView_singleLine
1301     */
1302    public final void setTransformationMethod(TransformationMethod method) {
1303        if (method == mTransformation) {
1304            // Avoid the setText() below if the transformation is
1305            // the same.
1306            return;
1307        }
1308        if (mTransformation != null) {
1309            if (mText instanceof Spannable) {
1310                ((Spannable) mText).removeSpan(mTransformation);
1311            }
1312        }
1313
1314        mTransformation = method;
1315
1316        setText(mText);
1317    }
1318
1319    /**
1320     * Returns the top padding of the view, plus space for the top
1321     * Drawable if any.
1322     */
1323    public int getCompoundPaddingTop() {
1324        final Drawables dr = mDrawables;
1325        if (dr == null || dr.mDrawableTop == null) {
1326            return mPaddingTop;
1327        } else {
1328            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1329        }
1330    }
1331
1332    /**
1333     * Returns the bottom padding of the view, plus space for the bottom
1334     * Drawable if any.
1335     */
1336    public int getCompoundPaddingBottom() {
1337        final Drawables dr = mDrawables;
1338        if (dr == null || dr.mDrawableBottom == null) {
1339            return mPaddingBottom;
1340        } else {
1341            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1342        }
1343    }
1344
1345    /**
1346     * Returns the left padding of the view, plus space for the left
1347     * Drawable if any.
1348     */
1349    public int getCompoundPaddingLeft() {
1350        final Drawables dr = mDrawables;
1351        if (dr == null || dr.mDrawableLeft == null) {
1352            return mPaddingLeft;
1353        } else {
1354            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1355        }
1356    }
1357
1358    /**
1359     * Returns the right padding of the view, plus space for the right
1360     * Drawable if any.
1361     */
1362    public int getCompoundPaddingRight() {
1363        final Drawables dr = mDrawables;
1364        if (dr == null || dr.mDrawableRight == null) {
1365            return mPaddingRight;
1366        } else {
1367            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1368        }
1369    }
1370
1371    /**
1372     * Returns the extended top padding of the view, including both the
1373     * top Drawable if any and any extra space to keep more than maxLines
1374     * of text from showing.  It is only valid to call this after measuring.
1375     */
1376    public int getExtendedPaddingTop() {
1377        if (mMaxMode != LINES) {
1378            return getCompoundPaddingTop();
1379        }
1380
1381        if (mLayout.getLineCount() <= mMaximum) {
1382            return getCompoundPaddingTop();
1383        }
1384
1385        int top = getCompoundPaddingTop();
1386        int bottom = getCompoundPaddingBottom();
1387        int viewht = getHeight() - top - bottom;
1388        int layoutht = mLayout.getLineTop(mMaximum);
1389
1390        if (layoutht >= viewht) {
1391            return top;
1392        }
1393
1394        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1395        if (gravity == Gravity.TOP) {
1396            return top;
1397        } else if (gravity == Gravity.BOTTOM) {
1398            return top + viewht - layoutht;
1399        } else { // (gravity == Gravity.CENTER_VERTICAL)
1400            return top + (viewht - layoutht) / 2;
1401        }
1402    }
1403
1404    /**
1405     * Returns the extended bottom padding of the view, including both the
1406     * bottom Drawable if any and any extra space to keep more than maxLines
1407     * of text from showing.  It is only valid to call this after measuring.
1408     */
1409    public int getExtendedPaddingBottom() {
1410        if (mMaxMode != LINES) {
1411            return getCompoundPaddingBottom();
1412        }
1413
1414        if (mLayout.getLineCount() <= mMaximum) {
1415            return getCompoundPaddingBottom();
1416        }
1417
1418        int top = getCompoundPaddingTop();
1419        int bottom = getCompoundPaddingBottom();
1420        int viewht = getHeight() - top - bottom;
1421        int layoutht = mLayout.getLineTop(mMaximum);
1422
1423        if (layoutht >= viewht) {
1424            return bottom;
1425        }
1426
1427        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1428        if (gravity == Gravity.TOP) {
1429            return bottom + viewht - layoutht;
1430        } else if (gravity == Gravity.BOTTOM) {
1431            return bottom;
1432        } else { // (gravity == Gravity.CENTER_VERTICAL)
1433            return bottom + (viewht - layoutht) / 2;
1434        }
1435    }
1436
1437    /**
1438     * Returns the total left padding of the view, including the left
1439     * Drawable if any.
1440     */
1441    public int getTotalPaddingLeft() {
1442        return getCompoundPaddingLeft();
1443    }
1444
1445    /**
1446     * Returns the total right padding of the view, including the right
1447     * Drawable if any.
1448     */
1449    public int getTotalPaddingRight() {
1450        return getCompoundPaddingRight();
1451    }
1452
1453    /**
1454     * Returns the total top padding of the view, including the top
1455     * Drawable if any, the extra space to keep more than maxLines
1456     * from showing, and the vertical offset for gravity, if any.
1457     */
1458    public int getTotalPaddingTop() {
1459        return getExtendedPaddingTop() + getVerticalOffset(true);
1460    }
1461
1462    /**
1463     * Returns the total bottom padding of the view, including the bottom
1464     * Drawable if any, the extra space to keep more than maxLines
1465     * from showing, and the vertical offset for gravity, if any.
1466     */
1467    public int getTotalPaddingBottom() {
1468        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1469    }
1470
1471    /**
1472     * Sets the Drawables (if any) to appear to the left of, above,
1473     * to the right of, and below the text.  Use null if you do not
1474     * want a Drawable there.  The Drawables must already have had
1475     * {@link Drawable#setBounds} called.
1476     *
1477     * @attr ref android.R.styleable#TextView_drawableLeft
1478     * @attr ref android.R.styleable#TextView_drawableTop
1479     * @attr ref android.R.styleable#TextView_drawableRight
1480     * @attr ref android.R.styleable#TextView_drawableBottom
1481     */
1482    public void setCompoundDrawables(Drawable left, Drawable top,
1483                                     Drawable right, Drawable bottom) {
1484        Drawables dr = mDrawables;
1485
1486        final boolean drawables = left != null || top != null
1487                || right != null || bottom != null;
1488
1489        if (!drawables) {
1490            // Clearing drawables...  can we free the data structure?
1491            if (dr != null) {
1492                if (dr.mDrawablePadding == 0) {
1493                    mDrawables = null;
1494                } else {
1495                    // We need to retain the last set padding, so just clear
1496                    // out all of the fields in the existing structure.
1497                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
1498                    dr.mDrawableLeft = null;
1499                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1500                    dr.mDrawableTop = null;
1501                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
1502                    dr.mDrawableRight = null;
1503                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1504                    dr.mDrawableBottom = null;
1505                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1506                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1507                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1508                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1509                }
1510            }
1511        } else {
1512            if (dr == null) {
1513                mDrawables = dr = new Drawables();
1514            }
1515
1516            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
1517                dr.mDrawableLeft.setCallback(null);
1518            }
1519            dr.mDrawableLeft = left;
1520
1521            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1522                dr.mDrawableTop.setCallback(null);
1523            }
1524            dr.mDrawableTop = top;
1525
1526            if (dr.mDrawableRight != right && dr.mDrawableRight != null) {
1527                dr.mDrawableRight.setCallback(null);
1528            }
1529            dr.mDrawableRight = right;
1530
1531            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1532                dr.mDrawableBottom.setCallback(null);
1533            }
1534            dr.mDrawableBottom = bottom;
1535
1536            final Rect compoundRect = dr.mCompoundRect;
1537            int[] state;
1538
1539            state = getDrawableState();
1540
1541            if (left != null) {
1542                left.setState(state);
1543                left.copyBounds(compoundRect);
1544                left.setCallback(this);
1545                dr.mDrawableSizeLeft = compoundRect.width();
1546                dr.mDrawableHeightLeft = compoundRect.height();
1547            } else {
1548                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1549            }
1550
1551            if (right != null) {
1552                right.setState(state);
1553                right.copyBounds(compoundRect);
1554                right.setCallback(this);
1555                dr.mDrawableSizeRight = compoundRect.width();
1556                dr.mDrawableHeightRight = compoundRect.height();
1557            } else {
1558                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1559            }
1560
1561            if (top != null) {
1562                top.setState(state);
1563                top.copyBounds(compoundRect);
1564                top.setCallback(this);
1565                dr.mDrawableSizeTop = compoundRect.height();
1566                dr.mDrawableWidthTop = compoundRect.width();
1567            } else {
1568                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1569            }
1570
1571            if (bottom != null) {
1572                bottom.setState(state);
1573                bottom.copyBounds(compoundRect);
1574                bottom.setCallback(this);
1575                dr.mDrawableSizeBottom = compoundRect.height();
1576                dr.mDrawableWidthBottom = compoundRect.width();
1577            } else {
1578                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1579            }
1580        }
1581
1582        invalidate();
1583        requestLayout();
1584    }
1585
1586    /**
1587     * Sets the Drawables (if any) to appear to the left of, above,
1588     * to the right of, and below the text.  Use 0 if you do not
1589     * want a Drawable there. The Drawables' bounds will be set to
1590     * their intrinsic bounds.
1591     *
1592     * @param left Resource identifier of the left Drawable.
1593     * @param top Resource identifier of the top Drawable.
1594     * @param right Resource identifier of the right Drawable.
1595     * @param bottom Resource identifier of the bottom Drawable.
1596     *
1597     * @attr ref android.R.styleable#TextView_drawableLeft
1598     * @attr ref android.R.styleable#TextView_drawableTop
1599     * @attr ref android.R.styleable#TextView_drawableRight
1600     * @attr ref android.R.styleable#TextView_drawableBottom
1601     */
1602    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1603        final Resources resources = getContext().getResources();
1604        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null,
1605                top != 0 ? resources.getDrawable(top) : null,
1606                right != 0 ? resources.getDrawable(right) : null,
1607                bottom != 0 ? resources.getDrawable(bottom) : null);
1608    }
1609
1610    /**
1611     * Sets the Drawables (if any) to appear to the left of, above,
1612     * to the right of, and below the text.  Use null if you do not
1613     * want a Drawable there. The Drawables' bounds will be set to
1614     * their intrinsic bounds.
1615     *
1616     * @attr ref android.R.styleable#TextView_drawableLeft
1617     * @attr ref android.R.styleable#TextView_drawableTop
1618     * @attr ref android.R.styleable#TextView_drawableRight
1619     * @attr ref android.R.styleable#TextView_drawableBottom
1620     */
1621    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1622            Drawable right, Drawable bottom) {
1623
1624        if (left != null) {
1625            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1626        }
1627        if (right != null) {
1628            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1629        }
1630        if (top != null) {
1631            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1632        }
1633        if (bottom != null) {
1634            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
1635        }
1636        setCompoundDrawables(left, top, right, bottom);
1637    }
1638
1639    /**
1640     * Returns drawables for the left, top, right, and bottom borders.
1641     */
1642    public Drawable[] getCompoundDrawables() {
1643        final Drawables dr = mDrawables;
1644        if (dr != null) {
1645            return new Drawable[] {
1646                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
1647            };
1648        } else {
1649            return new Drawable[] { null, null, null, null };
1650        }
1651    }
1652
1653    /**
1654     * Sets the size of the padding between the compound drawables and
1655     * the text.
1656     *
1657     * @attr ref android.R.styleable#TextView_drawablePadding
1658     */
1659    public void setCompoundDrawablePadding(int pad) {
1660        Drawables dr = mDrawables;
1661        if (pad == 0) {
1662            if (dr != null) {
1663                dr.mDrawablePadding = pad;
1664            }
1665        } else {
1666            if (dr == null) {
1667                mDrawables = dr = new Drawables();
1668            }
1669            dr.mDrawablePadding = pad;
1670        }
1671
1672        invalidate();
1673        requestLayout();
1674    }
1675
1676    /**
1677     * Returns the padding between the compound drawables and the text.
1678     */
1679    public int getCompoundDrawablePadding() {
1680        final Drawables dr = mDrawables;
1681        return dr != null ? dr.mDrawablePadding : 0;
1682    }
1683
1684    @Override
1685    public void setPadding(int left, int top, int right, int bottom) {
1686        if (left != mPaddingLeft ||
1687            right != mPaddingRight ||
1688            top != mPaddingTop ||
1689            bottom != mPaddingBottom) {
1690            nullLayouts();
1691        }
1692
1693        // the super call will requestLayout()
1694        super.setPadding(left, top, right, bottom);
1695        invalidate();
1696    }
1697
1698    /**
1699     * Gets the autolink mask of the text.  See {@link
1700     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1701     * possible values.
1702     *
1703     * @attr ref android.R.styleable#TextView_autoLink
1704     */
1705    public final int getAutoLinkMask() {
1706        return mAutoLinkMask;
1707    }
1708
1709    /**
1710     * Sets the text color, size, style, hint color, and highlight color
1711     * from the specified TextAppearance resource.
1712     */
1713    public void setTextAppearance(Context context, int resid) {
1714        TypedArray appearance =
1715            context.obtainStyledAttributes(resid,
1716                                           com.android.internal.R.styleable.TextAppearance);
1717
1718        int color;
1719        ColorStateList colors;
1720        int ts;
1721
1722        color = appearance.getColor(com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
1723        if (color != 0) {
1724            setHighlightColor(color);
1725        }
1726
1727        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1728                                              TextAppearance_textColor);
1729        if (colors != null) {
1730            setTextColor(colors);
1731        }
1732
1733        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
1734                                              TextAppearance_textSize, 0);
1735        if (ts != 0) {
1736            setRawTextSize(ts);
1737        }
1738
1739        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1740                                              TextAppearance_textColorHint);
1741        if (colors != null) {
1742            setHintTextColor(colors);
1743        }
1744
1745        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1746                                              TextAppearance_textColorLink);
1747        if (colors != null) {
1748            setLinkTextColor(colors);
1749        }
1750
1751        int typefaceIndex, styleIndex;
1752
1753        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
1754                                          TextAppearance_typeface, -1);
1755        styleIndex = appearance.getInt(com.android.internal.R.styleable.
1756                                       TextAppearance_textStyle, -1);
1757
1758        setTypefaceByIndex(typefaceIndex, styleIndex);
1759
1760        appearance.recycle();
1761    }
1762
1763    /**
1764     * @return the size (in pixels) of the default text size in this TextView.
1765     */
1766    public float getTextSize() {
1767        return mTextPaint.getTextSize();
1768    }
1769
1770    /**
1771     * Set the default text size to the given value, interpreted as "scaled
1772     * pixel" units.  This size is adjusted based on the current density and
1773     * user font size preference.
1774     *
1775     * @param size The scaled pixel size.
1776     *
1777     * @attr ref android.R.styleable#TextView_textSize
1778     */
1779    @android.view.RemotableViewMethod
1780    public void setTextSize(float size) {
1781        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
1782    }
1783
1784    /**
1785     * Set the default text size to a given unit and value.  See {@link
1786     * TypedValue} for the possible dimension units.
1787     *
1788     * @param unit The desired dimension unit.
1789     * @param size The desired size in the given units.
1790     *
1791     * @attr ref android.R.styleable#TextView_textSize
1792     */
1793    public void setTextSize(int unit, float size) {
1794        Context c = getContext();
1795        Resources r;
1796
1797        if (c == null)
1798            r = Resources.getSystem();
1799        else
1800            r = c.getResources();
1801
1802        setRawTextSize(TypedValue.applyDimension(
1803            unit, size, r.getDisplayMetrics()));
1804    }
1805
1806    private void setRawTextSize(float size) {
1807        if (size != mTextPaint.getTextSize()) {
1808            mTextPaint.setTextSize(size);
1809
1810            if (mLayout != null) {
1811                nullLayouts();
1812                requestLayout();
1813                invalidate();
1814            }
1815        }
1816    }
1817
1818    /**
1819     * @return the extent by which text is currently being stretched
1820     * horizontally.  This will usually be 1.
1821     */
1822    public float getTextScaleX() {
1823        return mTextPaint.getTextScaleX();
1824    }
1825
1826    /**
1827     * Sets the extent by which text should be stretched horizontally.
1828     *
1829     * @attr ref android.R.styleable#TextView_textScaleX
1830     */
1831    @android.view.RemotableViewMethod
1832    public void setTextScaleX(float size) {
1833        if (size != mTextPaint.getTextScaleX()) {
1834            mUserSetTextScaleX = true;
1835            mTextPaint.setTextScaleX(size);
1836
1837            if (mLayout != null) {
1838                nullLayouts();
1839                requestLayout();
1840                invalidate();
1841            }
1842        }
1843    }
1844
1845    /**
1846     * Sets the typeface and style in which the text should be displayed.
1847     * Note that not all Typeface families actually have bold and italic
1848     * variants, so you may need to use
1849     * {@link #setTypeface(Typeface, int)} to get the appearance
1850     * that you actually want.
1851     *
1852     * @attr ref android.R.styleable#TextView_typeface
1853     * @attr ref android.R.styleable#TextView_textStyle
1854     */
1855    public void setTypeface(Typeface tf) {
1856        if (mTextPaint.getTypeface() != tf) {
1857            mTextPaint.setTypeface(tf);
1858
1859            if (mLayout != null) {
1860                nullLayouts();
1861                requestLayout();
1862                invalidate();
1863            }
1864        }
1865    }
1866
1867    /**
1868     * @return the current typeface and style in which the text is being
1869     * displayed.
1870     */
1871    public Typeface getTypeface() {
1872        return mTextPaint.getTypeface();
1873    }
1874
1875    /**
1876     * Sets the text color for all the states (normal, selected,
1877     * focused) to be this color.
1878     *
1879     * @attr ref android.R.styleable#TextView_textColor
1880     */
1881    @android.view.RemotableViewMethod
1882    public void setTextColor(int color) {
1883        mTextColor = ColorStateList.valueOf(color);
1884        updateTextColors();
1885    }
1886
1887    /**
1888     * Sets the text color.
1889     *
1890     * @attr ref android.R.styleable#TextView_textColor
1891     */
1892    public void setTextColor(ColorStateList colors) {
1893        if (colors == null) {
1894            throw new NullPointerException();
1895        }
1896
1897        mTextColor = colors;
1898        updateTextColors();
1899    }
1900
1901    /**
1902     * Return the set of text colors.
1903     *
1904     * @return Returns the set of text colors.
1905     */
1906    public final ColorStateList getTextColors() {
1907        return mTextColor;
1908    }
1909
1910    /**
1911     * <p>Return the current color selected for normal text.</p>
1912     *
1913     * @return Returns the current text color.
1914     */
1915    public final int getCurrentTextColor() {
1916        return mCurTextColor;
1917    }
1918
1919    /**
1920     * Sets the color used to display the selection highlight.
1921     *
1922     * @attr ref android.R.styleable#TextView_textColorHighlight
1923     */
1924    @android.view.RemotableViewMethod
1925    public void setHighlightColor(int color) {
1926        if (mHighlightColor != color) {
1927            mHighlightColor = color;
1928            invalidate();
1929        }
1930    }
1931
1932    /**
1933     * Gives the text a shadow of the specified radius and color, the specified
1934     * distance from its normal position.
1935     *
1936     * @attr ref android.R.styleable#TextView_shadowColor
1937     * @attr ref android.R.styleable#TextView_shadowDx
1938     * @attr ref android.R.styleable#TextView_shadowDy
1939     * @attr ref android.R.styleable#TextView_shadowRadius
1940     */
1941    public void setShadowLayer(float radius, float dx, float dy, int color) {
1942        mTextPaint.setShadowLayer(radius, dx, dy, color);
1943
1944        mShadowRadius = radius;
1945        mShadowDx = dx;
1946        mShadowDy = dy;
1947
1948        invalidate();
1949    }
1950
1951    /**
1952     * @return the base paint used for the text.  Please use this only to
1953     * consult the Paint's properties and not to change them.
1954     */
1955    public TextPaint getPaint() {
1956        return mTextPaint;
1957    }
1958
1959    /**
1960     * Sets the autolink mask of the text.  See {@link
1961     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1962     * possible values.
1963     *
1964     * @attr ref android.R.styleable#TextView_autoLink
1965     */
1966    @android.view.RemotableViewMethod
1967    public final void setAutoLinkMask(int mask) {
1968        mAutoLinkMask = mask;
1969    }
1970
1971    /**
1972     * Sets whether the movement method will automatically be set to
1973     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1974     * set to nonzero and links are detected in {@link #setText}.
1975     * The default is true.
1976     *
1977     * @attr ref android.R.styleable#TextView_linksClickable
1978     */
1979    @android.view.RemotableViewMethod
1980    public final void setLinksClickable(boolean whether) {
1981        mLinksClickable = whether;
1982    }
1983
1984    /**
1985     * Returns whether the movement method will automatically be set to
1986     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1987     * set to nonzero and links are detected in {@link #setText}.
1988     * The default is true.
1989     *
1990     * @attr ref android.R.styleable#TextView_linksClickable
1991     */
1992    public final boolean getLinksClickable() {
1993        return mLinksClickable;
1994    }
1995
1996    /**
1997     * Returns the list of URLSpans attached to the text
1998     * (by {@link Linkify} or otherwise) if any.  You can call
1999     * {@link URLSpan#getURL} on them to find where they link to
2000     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
2001     * to find the region of the text they are attached to.
2002     */
2003    public URLSpan[] getUrls() {
2004        if (mText instanceof Spanned) {
2005            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
2006        } else {
2007            return new URLSpan[0];
2008        }
2009    }
2010
2011    /**
2012     * Sets the color of the hint text.
2013     *
2014     * @attr ref android.R.styleable#TextView_textColorHint
2015     */
2016    @android.view.RemotableViewMethod
2017    public final void setHintTextColor(int color) {
2018        mHintTextColor = ColorStateList.valueOf(color);
2019        updateTextColors();
2020    }
2021
2022    /**
2023     * Sets the color of the hint text.
2024     *
2025     * @attr ref android.R.styleable#TextView_textColorHint
2026     */
2027    public final void setHintTextColor(ColorStateList colors) {
2028        mHintTextColor = colors;
2029        updateTextColors();
2030    }
2031
2032    /**
2033     * <p>Return the color used to paint the hint text.</p>
2034     *
2035     * @return Returns the list of hint text colors.
2036     */
2037    public final ColorStateList getHintTextColors() {
2038        return mHintTextColor;
2039    }
2040
2041    /**
2042     * <p>Return the current color selected to paint the hint text.</p>
2043     *
2044     * @return Returns the current hint text color.
2045     */
2046    public final int getCurrentHintTextColor() {
2047        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
2048    }
2049
2050    /**
2051     * Sets the color of links in the text.
2052     *
2053     * @attr ref android.R.styleable#TextView_textColorLink
2054     */
2055    @android.view.RemotableViewMethod
2056    public final void setLinkTextColor(int color) {
2057        mLinkTextColor = ColorStateList.valueOf(color);
2058        updateTextColors();
2059    }
2060
2061    /**
2062     * Sets the color of links in the text.
2063     *
2064     * @attr ref android.R.styleable#TextView_textColorLink
2065     */
2066    public final void setLinkTextColor(ColorStateList colors) {
2067        mLinkTextColor = colors;
2068        updateTextColors();
2069    }
2070
2071    /**
2072     * <p>Returns the color used to paint links in the text.</p>
2073     *
2074     * @return Returns the list of link text colors.
2075     */
2076    public final ColorStateList getLinkTextColors() {
2077        return mLinkTextColor;
2078    }
2079
2080    /**
2081     * Sets the horizontal alignment of the text and the
2082     * vertical gravity that will be used when there is extra space
2083     * in the TextView beyond what is required for the text itself.
2084     *
2085     * @see android.view.Gravity
2086     * @attr ref android.R.styleable#TextView_gravity
2087     */
2088    public void setGravity(int gravity) {
2089        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == 0) {
2090            gravity |= Gravity.LEFT;
2091        }
2092        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
2093            gravity |= Gravity.TOP;
2094        }
2095
2096        boolean newLayout = false;
2097
2098        if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) !=
2099            (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK)) {
2100            newLayout = true;
2101        }
2102
2103        if (gravity != mGravity) {
2104            invalidate();
2105        }
2106
2107        mGravity = gravity;
2108
2109        if (mLayout != null && newLayout) {
2110            // XXX this is heavy-handed because no actual content changes.
2111            int want = mLayout.getWidth();
2112            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
2113
2114            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
2115                          mRight - mLeft - getCompoundPaddingLeft() -
2116                          getCompoundPaddingRight(), true);
2117        }
2118    }
2119
2120    /**
2121     * Returns the horizontal and vertical alignment of this TextView.
2122     *
2123     * @see android.view.Gravity
2124     * @attr ref android.R.styleable#TextView_gravity
2125     */
2126    public int getGravity() {
2127        return mGravity;
2128    }
2129
2130    /**
2131     * @return the flags on the Paint being used to display the text.
2132     * @see Paint#getFlags
2133     */
2134    public int getPaintFlags() {
2135        return mTextPaint.getFlags();
2136    }
2137
2138    /**
2139     * Sets flags on the Paint being used to display the text and
2140     * reflows the text if they are different from the old flags.
2141     * @see Paint#setFlags
2142     */
2143    @android.view.RemotableViewMethod
2144    public void setPaintFlags(int flags) {
2145        if (mTextPaint.getFlags() != flags) {
2146            mTextPaint.setFlags(flags);
2147
2148            if (mLayout != null) {
2149                nullLayouts();
2150                requestLayout();
2151                invalidate();
2152            }
2153        }
2154    }
2155
2156    /**
2157     * Sets whether the text should be allowed to be wider than the
2158     * View is.  If false, it will be wrapped to the width of the View.
2159     *
2160     * @attr ref android.R.styleable#TextView_scrollHorizontally
2161     */
2162    public void setHorizontallyScrolling(boolean whether) {
2163        mHorizontallyScrolling = whether;
2164
2165        if (mLayout != null) {
2166            nullLayouts();
2167            requestLayout();
2168            invalidate();
2169        }
2170    }
2171
2172    /**
2173     * Makes the TextView at least this many lines tall.
2174     *
2175     * Setting this value overrides any other (minimum) height setting. A single line TextView will
2176     * set this value to 1.
2177     *
2178     * @attr ref android.R.styleable#TextView_minLines
2179     */
2180    @android.view.RemotableViewMethod
2181    public void setMinLines(int minlines) {
2182        mMinimum = minlines;
2183        mMinMode = LINES;
2184
2185        requestLayout();
2186        invalidate();
2187    }
2188
2189    /**
2190     * Makes the TextView at least this many pixels tall.
2191     *
2192     * Setting this value overrides any other (minimum) number of lines setting.
2193     *
2194     * @attr ref android.R.styleable#TextView_minHeight
2195     */
2196    @android.view.RemotableViewMethod
2197    public void setMinHeight(int minHeight) {
2198        mMinimum = minHeight;
2199        mMinMode = PIXELS;
2200
2201        requestLayout();
2202        invalidate();
2203    }
2204
2205    /**
2206     * Makes the TextView at most this many lines tall.
2207     *
2208     * Setting this value overrides any other (maximum) height setting.
2209     *
2210     * @attr ref android.R.styleable#TextView_maxLines
2211     */
2212    @android.view.RemotableViewMethod
2213    public void setMaxLines(int maxlines) {
2214        mMaximum = maxlines;
2215        mMaxMode = LINES;
2216
2217        requestLayout();
2218        invalidate();
2219    }
2220
2221    /**
2222     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
2223     * {@link #setMaxLines(int)} method.
2224     *
2225     * Setting this value overrides any other (maximum) number of lines setting.
2226     *
2227     * @attr ref android.R.styleable#TextView_maxHeight
2228     */
2229    @android.view.RemotableViewMethod
2230    public void setMaxHeight(int maxHeight) {
2231        mMaximum = maxHeight;
2232        mMaxMode = PIXELS;
2233
2234        requestLayout();
2235        invalidate();
2236    }
2237
2238    /**
2239     * Makes the TextView exactly this many lines tall.
2240     *
2241     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2242     * height setting. A single line TextView will set this value to 1.
2243     *
2244     * @attr ref android.R.styleable#TextView_lines
2245     */
2246    @android.view.RemotableViewMethod
2247    public void setLines(int lines) {
2248        mMaximum = mMinimum = lines;
2249        mMaxMode = mMinMode = LINES;
2250
2251        requestLayout();
2252        invalidate();
2253    }
2254
2255    /**
2256     * Makes the TextView exactly this many pixels tall.
2257     * You could do the same thing by specifying this number in the
2258     * LayoutParams.
2259     *
2260     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2261     * height setting.
2262     *
2263     * @attr ref android.R.styleable#TextView_height
2264     */
2265    @android.view.RemotableViewMethod
2266    public void setHeight(int pixels) {
2267        mMaximum = mMinimum = pixels;
2268        mMaxMode = mMinMode = PIXELS;
2269
2270        requestLayout();
2271        invalidate();
2272    }
2273
2274    /**
2275     * Makes the TextView at least this many ems wide
2276     *
2277     * @attr ref android.R.styleable#TextView_minEms
2278     */
2279    @android.view.RemotableViewMethod
2280    public void setMinEms(int minems) {
2281        mMinWidth = minems;
2282        mMinWidthMode = EMS;
2283
2284        requestLayout();
2285        invalidate();
2286    }
2287
2288    /**
2289     * Makes the TextView at least this many pixels wide
2290     *
2291     * @attr ref android.R.styleable#TextView_minWidth
2292     */
2293    @android.view.RemotableViewMethod
2294    public void setMinWidth(int minpixels) {
2295        mMinWidth = minpixels;
2296        mMinWidthMode = PIXELS;
2297
2298        requestLayout();
2299        invalidate();
2300    }
2301
2302    /**
2303     * Makes the TextView at most this many ems wide
2304     *
2305     * @attr ref android.R.styleable#TextView_maxEms
2306     */
2307    @android.view.RemotableViewMethod
2308    public void setMaxEms(int maxems) {
2309        mMaxWidth = maxems;
2310        mMaxWidthMode = EMS;
2311
2312        requestLayout();
2313        invalidate();
2314    }
2315
2316    /**
2317     * Makes the TextView at most this many pixels wide
2318     *
2319     * @attr ref android.R.styleable#TextView_maxWidth
2320     */
2321    @android.view.RemotableViewMethod
2322    public void setMaxWidth(int maxpixels) {
2323        mMaxWidth = maxpixels;
2324        mMaxWidthMode = PIXELS;
2325
2326        requestLayout();
2327        invalidate();
2328    }
2329
2330    /**
2331     * Makes the TextView exactly this many ems wide
2332     *
2333     * @attr ref android.R.styleable#TextView_ems
2334     */
2335    @android.view.RemotableViewMethod
2336    public void setEms(int ems) {
2337        mMaxWidth = mMinWidth = ems;
2338        mMaxWidthMode = mMinWidthMode = EMS;
2339
2340        requestLayout();
2341        invalidate();
2342    }
2343
2344    /**
2345     * Makes the TextView exactly this many pixels wide.
2346     * You could do the same thing by specifying this number in the
2347     * LayoutParams.
2348     *
2349     * @attr ref android.R.styleable#TextView_width
2350     */
2351    @android.view.RemotableViewMethod
2352    public void setWidth(int pixels) {
2353        mMaxWidth = mMinWidth = pixels;
2354        mMaxWidthMode = mMinWidthMode = PIXELS;
2355
2356        requestLayout();
2357        invalidate();
2358    }
2359
2360
2361    /**
2362     * Sets line spacing for this TextView.  Each line will have its height
2363     * multiplied by <code>mult</code> and have <code>add</code> added to it.
2364     *
2365     * @attr ref android.R.styleable#TextView_lineSpacingExtra
2366     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
2367     */
2368    public void setLineSpacing(float add, float mult) {
2369        mSpacingMult = mult;
2370        mSpacingAdd = add;
2371
2372        if (mLayout != null) {
2373            nullLayouts();
2374            requestLayout();
2375            invalidate();
2376        }
2377    }
2378
2379    /**
2380     * Convenience method: Append the specified text to the TextView's
2381     * display buffer, upgrading it to BufferType.EDITABLE if it was
2382     * not already editable.
2383     */
2384    public final void append(CharSequence text) {
2385        append(text, 0, text.length());
2386    }
2387
2388    /**
2389     * Convenience method: Append the specified text slice to the TextView's
2390     * display buffer, upgrading it to BufferType.EDITABLE if it was
2391     * not already editable.
2392     */
2393    public void append(CharSequence text, int start, int end) {
2394        if (!(mText instanceof Editable)) {
2395            setText(mText, BufferType.EDITABLE);
2396        }
2397
2398        ((Editable) mText).append(text, start, end);
2399    }
2400
2401    private void updateTextColors() {
2402        boolean inval = false;
2403        int color = mTextColor.getColorForState(getDrawableState(), 0);
2404        if (color != mCurTextColor) {
2405            mCurTextColor = color;
2406            inval = true;
2407        }
2408        if (mLinkTextColor != null) {
2409            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
2410            if (color != mTextPaint.linkColor) {
2411                mTextPaint.linkColor = color;
2412                inval = true;
2413            }
2414        }
2415        if (mHintTextColor != null) {
2416            color = mHintTextColor.getColorForState(getDrawableState(), 0);
2417            if (color != mCurHintTextColor && mText.length() == 0) {
2418                mCurHintTextColor = color;
2419                inval = true;
2420            }
2421        }
2422        if (inval) {
2423            invalidate();
2424        }
2425    }
2426
2427    @Override
2428    protected void drawableStateChanged() {
2429        super.drawableStateChanged();
2430        if (mTextColor != null && mTextColor.isStateful()
2431                || (mHintTextColor != null && mHintTextColor.isStateful())
2432                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
2433            updateTextColors();
2434        }
2435
2436        final Drawables dr = mDrawables;
2437        if (dr != null) {
2438            int[] state = getDrawableState();
2439            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
2440                dr.mDrawableTop.setState(state);
2441            }
2442            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
2443                dr.mDrawableBottom.setState(state);
2444            }
2445            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
2446                dr.mDrawableLeft.setState(state);
2447            }
2448            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
2449                dr.mDrawableRight.setState(state);
2450            }
2451        }
2452    }
2453
2454    /**
2455     * User interface state that is stored by TextView for implementing
2456     * {@link View#onSaveInstanceState}.
2457     */
2458    public static class SavedState extends BaseSavedState {
2459        int selStart;
2460        int selEnd;
2461        CharSequence text;
2462        boolean frozenWithFocus;
2463        CharSequence error;
2464
2465        SavedState(Parcelable superState) {
2466            super(superState);
2467        }
2468
2469        @Override
2470        public void writeToParcel(Parcel out, int flags) {
2471            super.writeToParcel(out, flags);
2472            out.writeInt(selStart);
2473            out.writeInt(selEnd);
2474            out.writeInt(frozenWithFocus ? 1 : 0);
2475            TextUtils.writeToParcel(text, out, flags);
2476
2477            if (error == null) {
2478                out.writeInt(0);
2479            } else {
2480                out.writeInt(1);
2481                TextUtils.writeToParcel(error, out, flags);
2482            }
2483        }
2484
2485        @Override
2486        public String toString() {
2487            String str = "TextView.SavedState{"
2488                    + Integer.toHexString(System.identityHashCode(this))
2489                    + " start=" + selStart + " end=" + selEnd;
2490            if (text != null) {
2491                str += " text=" + text;
2492            }
2493            return str + "}";
2494        }
2495
2496        @SuppressWarnings("hiding")
2497        public static final Parcelable.Creator<SavedState> CREATOR
2498                = new Parcelable.Creator<SavedState>() {
2499            public SavedState createFromParcel(Parcel in) {
2500                return new SavedState(in);
2501            }
2502
2503            public SavedState[] newArray(int size) {
2504                return new SavedState[size];
2505            }
2506        };
2507
2508        private SavedState(Parcel in) {
2509            super(in);
2510            selStart = in.readInt();
2511            selEnd = in.readInt();
2512            frozenWithFocus = (in.readInt() != 0);
2513            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2514
2515            if (in.readInt() != 0) {
2516                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2517            }
2518        }
2519    }
2520
2521    @Override
2522    public Parcelable onSaveInstanceState() {
2523        Parcelable superState = super.onSaveInstanceState();
2524
2525        // Save state if we are forced to
2526        boolean save = mFreezesText;
2527        int start = 0;
2528        int end = 0;
2529
2530        if (mText != null) {
2531            start = getSelectionStart();
2532            end = getSelectionEnd();
2533            if (start >= 0 || end >= 0) {
2534                // Or save state if there is a selection
2535                save = true;
2536            }
2537        }
2538
2539        if (save) {
2540            SavedState ss = new SavedState(superState);
2541            // XXX Should also save the current scroll position!
2542            ss.selStart = start;
2543            ss.selEnd = end;
2544
2545            if (mText instanceof Spanned) {
2546                /*
2547                 * Calling setText() strips off any ChangeWatchers;
2548                 * strip them now to avoid leaking references.
2549                 * But do it to a copy so that if there are any
2550                 * further changes to the text of this view, it
2551                 * won't get into an inconsistent state.
2552                 */
2553
2554                Spannable sp = new SpannableString(mText);
2555
2556                for (ChangeWatcher cw :
2557                     sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
2558                    sp.removeSpan(cw);
2559                }
2560
2561                ss.text = sp;
2562            } else {
2563                ss.text = mText.toString();
2564            }
2565
2566            if (isFocused() && start >= 0 && end >= 0) {
2567                ss.frozenWithFocus = true;
2568            }
2569
2570            ss.error = mError;
2571
2572            return ss;
2573        }
2574
2575        return superState;
2576    }
2577
2578    @Override
2579    public void onRestoreInstanceState(Parcelable state) {
2580        if (!(state instanceof SavedState)) {
2581            super.onRestoreInstanceState(state);
2582            return;
2583        }
2584
2585        SavedState ss = (SavedState)state;
2586        super.onRestoreInstanceState(ss.getSuperState());
2587
2588        // XXX restore buffer type too, as well as lots of other stuff
2589        if (ss.text != null) {
2590            setText(ss.text);
2591        }
2592
2593        if (ss.selStart >= 0 && ss.selEnd >= 0) {
2594            if (mText instanceof Spannable) {
2595                int len = mText.length();
2596
2597                if (ss.selStart > len || ss.selEnd > len) {
2598                    String restored = "";
2599
2600                    if (ss.text != null) {
2601                        restored = "(restored) ";
2602                    }
2603
2604                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
2605                          "/" + ss.selEnd + " out of range for " + restored +
2606                          "text " + mText);
2607                } else {
2608                    Selection.setSelection((Spannable) mText, ss.selStart,
2609                                           ss.selEnd);
2610
2611                    if (ss.frozenWithFocus) {
2612                        mFrozenWithFocus = true;
2613                    }
2614                }
2615            }
2616        }
2617
2618        if (ss.error != null) {
2619            final CharSequence error = ss.error;
2620            // Display the error later, after the first layout pass
2621            post(new Runnable() {
2622                public void run() {
2623                    setError(error);
2624                }
2625            });
2626        }
2627    }
2628
2629    /**
2630     * Control whether this text view saves its entire text contents when
2631     * freezing to an icicle, in addition to dynamic state such as cursor
2632     * position.  By default this is false, not saving the text.  Set to true
2633     * if the text in the text view is not being saved somewhere else in
2634     * persistent storage (such as in a content provider) so that if the
2635     * view is later thawed the user will not lose their data.
2636     *
2637     * @param freezesText Controls whether a frozen icicle should include the
2638     * entire text data: true to include it, false to not.
2639     *
2640     * @attr ref android.R.styleable#TextView_freezesText
2641     */
2642    @android.view.RemotableViewMethod
2643    public void setFreezesText(boolean freezesText) {
2644        mFreezesText = freezesText;
2645    }
2646
2647    /**
2648     * Return whether this text view is including its entire text contents
2649     * in frozen icicles.
2650     *
2651     * @return Returns true if text is included, false if it isn't.
2652     *
2653     * @see #setFreezesText
2654     */
2655    public boolean getFreezesText() {
2656        return mFreezesText;
2657    }
2658
2659    ///////////////////////////////////////////////////////////////////////////
2660
2661    /**
2662     * Sets the Factory used to create new Editables.
2663     */
2664    public final void setEditableFactory(Editable.Factory factory) {
2665        mEditableFactory = factory;
2666        setText(mText);
2667    }
2668
2669    /**
2670     * Sets the Factory used to create new Spannables.
2671     */
2672    public final void setSpannableFactory(Spannable.Factory factory) {
2673        mSpannableFactory = factory;
2674        setText(mText);
2675    }
2676
2677    /**
2678     * Sets the string value of the TextView. TextView <em>does not</em> accept
2679     * HTML-like formatting, which you can do with text strings in XML resource files.
2680     * To style your strings, attach android.text.style.* objects to a
2681     * {@link android.text.SpannableString SpannableString}, or see the
2682     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
2683     * Available Resource Types</a> documentation for an example of setting
2684     * formatted text in the XML resource file.
2685     *
2686     * @attr ref android.R.styleable#TextView_text
2687     */
2688    @android.view.RemotableViewMethod
2689    public final void setText(CharSequence text) {
2690        setText(text, mBufferType);
2691    }
2692
2693    /**
2694     * Like {@link #setText(CharSequence)},
2695     * except that the cursor position (if any) is retained in the new text.
2696     *
2697     * @param text The new text to place in the text view.
2698     *
2699     * @see #setText(CharSequence)
2700     */
2701    @android.view.RemotableViewMethod
2702    public final void setTextKeepState(CharSequence text) {
2703        setTextKeepState(text, mBufferType);
2704    }
2705
2706    /**
2707     * Sets the text that this TextView is to display (see
2708     * {@link #setText(CharSequence)}) and also sets whether it is stored
2709     * in a styleable/spannable buffer and whether it is editable.
2710     *
2711     * @attr ref android.R.styleable#TextView_text
2712     * @attr ref android.R.styleable#TextView_bufferType
2713     */
2714    public void setText(CharSequence text, BufferType type) {
2715        setText(text, type, true, 0);
2716
2717        if (mCharWrapper != null) {
2718            mCharWrapper.mChars = null;
2719        }
2720    }
2721
2722    private void setText(CharSequence text, BufferType type,
2723                         boolean notifyBefore, int oldlen) {
2724        if (text == null) {
2725            text = "";
2726        }
2727
2728        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
2729
2730        if (text instanceof Spanned &&
2731            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
2732            setHorizontalFadingEdgeEnabled(true);
2733            setEllipsize(TextUtils.TruncateAt.MARQUEE);
2734        }
2735
2736        int n = mFilters.length;
2737        for (int i = 0; i < n; i++) {
2738            CharSequence out = mFilters[i].filter(text, 0, text.length(),
2739                                                  EMPTY_SPANNED, 0, 0);
2740            if (out != null) {
2741                text = out;
2742            }
2743        }
2744
2745        if (notifyBefore) {
2746            if (mText != null) {
2747                oldlen = mText.length();
2748                sendBeforeTextChanged(mText, 0, oldlen, text.length());
2749            } else {
2750                sendBeforeTextChanged("", 0, 0, text.length());
2751            }
2752        }
2753
2754        boolean needEditableForNotification = false;
2755
2756        if (mListeners != null && mListeners.size() != 0) {
2757            needEditableForNotification = true;
2758        }
2759
2760        if (type == BufferType.EDITABLE || mInput != null ||
2761            needEditableForNotification) {
2762            Editable t = mEditableFactory.newEditable(text);
2763            text = t;
2764            setFilters(t, mFilters);
2765            InputMethodManager imm = InputMethodManager.peekInstance();
2766            if (imm != null) imm.restartInput(this);
2767        } else if (type == BufferType.SPANNABLE || mMovement != null) {
2768            text = mSpannableFactory.newSpannable(text);
2769        } else if (!(text instanceof CharWrapper)) {
2770            text = TextUtils.stringOrSpannedString(text);
2771        }
2772
2773        if (mAutoLinkMask != 0) {
2774            Spannable s2;
2775
2776            if (type == BufferType.EDITABLE || text instanceof Spannable) {
2777                s2 = (Spannable) text;
2778            } else {
2779                s2 = mSpannableFactory.newSpannable(text);
2780            }
2781
2782            if (Linkify.addLinks(s2, mAutoLinkMask)) {
2783                text = s2;
2784                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
2785
2786                /*
2787                 * We must go ahead and set the text before changing the
2788                 * movement method, because setMovementMethod() may call
2789                 * setText() again to try to upgrade the buffer type.
2790                 */
2791                mText = text;
2792
2793                // Do not change the movement method for text that support text selection as it
2794                // would prevent an arbitrary cursor displacement.
2795                final boolean hasTextSelection = this instanceof EditText || mTextIsSelectable;
2796                if (mLinksClickable && !hasTextSelection) {
2797                    setMovementMethod(LinkMovementMethod.getInstance());
2798                }
2799            }
2800        }
2801
2802        mBufferType = type;
2803        mText = text;
2804
2805        if (mTransformation == null)
2806            mTransformed = text;
2807        else
2808            mTransformed = mTransformation.getTransformation(text, this);
2809
2810        final int textLength = text.length();
2811
2812        if (text instanceof Spannable) {
2813            Spannable sp = (Spannable) text;
2814
2815            // Remove any ChangeWatchers that might have come
2816            // from other TextViews.
2817            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
2818            final int count = watchers.length;
2819            for (int i = 0; i < count; i++)
2820                sp.removeSpan(watchers[i]);
2821
2822            if (mChangeWatcher == null)
2823                mChangeWatcher = new ChangeWatcher();
2824
2825            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
2826                       (PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
2827
2828            if (mInput != null) {
2829                sp.setSpan(mInput, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2830            }
2831
2832            if (mTransformation != null) {
2833                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2834
2835            }
2836
2837            if (mMovement != null) {
2838                mMovement.initialize(this, (Spannable) text);
2839
2840                /*
2841                 * Initializing the movement method will have set the
2842                 * selection, so reset mSelectionMoved to keep that from
2843                 * interfering with the normal on-focus selection-setting.
2844                 */
2845                mSelectionMoved = false;
2846            }
2847        }
2848
2849        if (mLayout != null) {
2850            checkForRelayout();
2851        }
2852
2853        sendOnTextChanged(text, 0, oldlen, textLength);
2854        onTextChanged(text, 0, oldlen, textLength);
2855
2856        if (needEditableForNotification) {
2857            sendAfterTextChanged((Editable) text);
2858        }
2859
2860        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
2861        prepareCursorControllers();
2862    }
2863
2864    /**
2865     * Sets the TextView to display the specified slice of the specified
2866     * char array.  You must promise that you will not change the contents
2867     * of the array except for right before another call to setText(),
2868     * since the TextView has no way to know that the text
2869     * has changed and that it needs to invalidate and re-layout.
2870     */
2871    public final void setText(char[] text, int start, int len) {
2872        int oldlen = 0;
2873
2874        if (start < 0 || len < 0 || start + len > text.length) {
2875            throw new IndexOutOfBoundsException(start + ", " + len);
2876        }
2877
2878        /*
2879         * We must do the before-notification here ourselves because if
2880         * the old text is a CharWrapper we destroy it before calling
2881         * into the normal path.
2882         */
2883        if (mText != null) {
2884            oldlen = mText.length();
2885            sendBeforeTextChanged(mText, 0, oldlen, len);
2886        } else {
2887            sendBeforeTextChanged("", 0, 0, len);
2888        }
2889
2890        if (mCharWrapper == null) {
2891            mCharWrapper = new CharWrapper(text, start, len);
2892        } else {
2893            mCharWrapper.set(text, start, len);
2894        }
2895
2896        setText(mCharWrapper, mBufferType, false, oldlen);
2897    }
2898
2899    private static class CharWrapper
2900            implements CharSequence, GetChars, GraphicsOperations {
2901        private char[] mChars;
2902        private int mStart, mLength;
2903
2904        public CharWrapper(char[] chars, int start, int len) {
2905            mChars = chars;
2906            mStart = start;
2907            mLength = len;
2908        }
2909
2910        /* package */ void set(char[] chars, int start, int len) {
2911            mChars = chars;
2912            mStart = start;
2913            mLength = len;
2914        }
2915
2916        public int length() {
2917            return mLength;
2918        }
2919
2920        public char charAt(int off) {
2921            return mChars[off + mStart];
2922        }
2923
2924        @Override
2925        public String toString() {
2926            return new String(mChars, mStart, mLength);
2927        }
2928
2929        public CharSequence subSequence(int start, int end) {
2930            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2931                throw new IndexOutOfBoundsException(start + ", " + end);
2932            }
2933
2934            return new String(mChars, start + mStart, end - start);
2935        }
2936
2937        public void getChars(int start, int end, char[] buf, int off) {
2938            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2939                throw new IndexOutOfBoundsException(start + ", " + end);
2940            }
2941
2942            System.arraycopy(mChars, start + mStart, buf, off, end - start);
2943        }
2944
2945        public void drawText(Canvas c, int start, int end,
2946                             float x, float y, Paint p) {
2947            c.drawText(mChars, start + mStart, end - start, x, y, p);
2948        }
2949
2950        public void drawTextRun(Canvas c, int start, int end,
2951                int contextStart, int contextEnd, float x, float y, int flags, Paint p) {
2952            int count = end - start;
2953            int contextCount = contextEnd - contextStart;
2954            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
2955                    contextCount, x, y, flags, p);
2956        }
2957
2958        public float measureText(int start, int end, Paint p) {
2959            return p.measureText(mChars, start + mStart, end - start);
2960        }
2961
2962        public int getTextWidths(int start, int end, float[] widths, Paint p) {
2963            return p.getTextWidths(mChars, start + mStart, end - start, widths);
2964        }
2965
2966        public float getTextRunAdvances(int start, int end, int contextStart,
2967                int contextEnd, int flags, float[] advances, int advancesIndex,
2968                Paint p) {
2969            int count = end - start;
2970            int contextCount = contextEnd - contextStart;
2971            return p.getTextRunAdvances(mChars, start + mStart, count,
2972                    contextStart + mStart, contextCount, flags, advances,
2973                    advancesIndex);
2974        }
2975
2976        public float getTextRunAdvances(int start, int end, int contextStart,
2977                int contextEnd, int flags, float[] advances, int advancesIndex,
2978                Paint p, int reserved) {
2979            int count = end - start;
2980            int contextCount = contextEnd - contextStart;
2981            return p.getTextRunAdvances(mChars, start + mStart, count,
2982                    contextStart + mStart, contextCount, flags, advances,
2983                    advancesIndex, reserved);
2984        }
2985
2986        public int getTextRunCursor(int contextStart, int contextEnd, int flags,
2987                int offset, int cursorOpt, Paint p) {
2988            int contextCount = contextEnd - contextStart;
2989            return p.getTextRunCursor(mChars, contextStart + mStart,
2990                    contextCount, flags, offset + mStart, cursorOpt);
2991        }
2992    }
2993
2994    /**
2995     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
2996     * except that the cursor position (if any) is retained in the new text.
2997     *
2998     * @see #setText(CharSequence, android.widget.TextView.BufferType)
2999     */
3000    public final void setTextKeepState(CharSequence text, BufferType type) {
3001        int start = getSelectionStart();
3002        int end = getSelectionEnd();
3003        int len = text.length();
3004
3005        setText(text, type);
3006
3007        if (start >= 0 || end >= 0) {
3008            if (mText instanceof Spannable) {
3009                Selection.setSelection((Spannable) mText,
3010                                       Math.max(0, Math.min(start, len)),
3011                                       Math.max(0, Math.min(end, len)));
3012            }
3013        }
3014    }
3015
3016    @android.view.RemotableViewMethod
3017    public final void setText(int resid) {
3018        setText(getContext().getResources().getText(resid));
3019    }
3020
3021    public final void setText(int resid, BufferType type) {
3022        setText(getContext().getResources().getText(resid), type);
3023    }
3024
3025    /**
3026     * Sets the text to be displayed when the text of the TextView is empty.
3027     * Null means to use the normal empty text. The hint does not currently
3028     * participate in determining the size of the view.
3029     *
3030     * @attr ref android.R.styleable#TextView_hint
3031     */
3032    @android.view.RemotableViewMethod
3033    public final void setHint(CharSequence hint) {
3034        mHint = TextUtils.stringOrSpannedString(hint);
3035
3036        if (mLayout != null) {
3037            checkForRelayout();
3038        }
3039
3040        if (mText.length() == 0) {
3041            invalidate();
3042        }
3043    }
3044
3045    /**
3046     * Sets the text to be displayed when the text of the TextView is empty,
3047     * from a resource.
3048     *
3049     * @attr ref android.R.styleable#TextView_hint
3050     */
3051    @android.view.RemotableViewMethod
3052    public final void setHint(int resid) {
3053        setHint(getContext().getResources().getText(resid));
3054    }
3055
3056    /**
3057     * Returns the hint that is displayed when the text of the TextView
3058     * is empty.
3059     *
3060     * @attr ref android.R.styleable#TextView_hint
3061     */
3062    @ViewDebug.CapturedViewProperty
3063    public CharSequence getHint() {
3064        return mHint;
3065    }
3066
3067    private boolean isMultilineInputType(int type) {
3068        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
3069            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
3070    }
3071
3072    /**
3073     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
3074     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
3075     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
3076     * then a soft keyboard will not be displayed for this text view.
3077     *
3078     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
3079     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
3080     * type.
3081     *
3082     * @see #getInputType()
3083     * @see #setRawInputType(int)
3084     * @see android.text.InputType
3085     * @attr ref android.R.styleable#TextView_inputType
3086     */
3087    public void setInputType(int type) {
3088        final boolean wasPassword = isPasswordInputType(mInputType);
3089        final boolean wasVisiblePassword = isVisiblePasswordInputType(mInputType);
3090        setInputType(type, false);
3091        final boolean isPassword = isPasswordInputType(type);
3092        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
3093        boolean forceUpdate = false;
3094        if (isPassword) {
3095            setTransformationMethod(PasswordTransformationMethod.getInstance());
3096            setTypefaceByIndex(MONOSPACE, 0);
3097        } else if (isVisiblePassword) {
3098            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3099                forceUpdate = true;
3100            }
3101            setTypefaceByIndex(MONOSPACE, 0);
3102        } else if (wasPassword || wasVisiblePassword) {
3103            // not in password mode, clean up typeface and transformation
3104            setTypefaceByIndex(-1, -1);
3105            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3106                forceUpdate = true;
3107            }
3108        }
3109
3110        boolean singleLine = !isMultilineInputType(type);
3111
3112        // We need to update the single line mode if it has changed or we
3113        // were previously in password mode.
3114        if (mSingleLine != singleLine || forceUpdate) {
3115            // Change single line mode, but only change the transformation if
3116            // we are not in password mode.
3117            applySingleLine(singleLine, !isPassword, true);
3118        }
3119
3120        InputMethodManager imm = InputMethodManager.peekInstance();
3121        if (imm != null) imm.restartInput(this);
3122    }
3123
3124    /**
3125     * It would be better to rely on the input type for everything. A password inputType should have
3126     * a password transformation. We should hence use isPasswordInputType instead of this method.
3127     *
3128     * We should:
3129     * - Call setInputType in setKeyListener instead of changing the input type directly (which
3130     * would install the correct transformation).
3131     * - Refuse the installation of a non-password transformation in setTransformation if the input
3132     * type is password.
3133     *
3134     * However, this is like this for legacy reasons and we cannot break existing apps. This method
3135     * is useful since it matches what the user can see (obfuscated text or not).
3136     *
3137     * @return true if the current transformation method is of the password type.
3138     */
3139    private boolean hasPasswordTransformationMethod() {
3140        return mTransformation instanceof PasswordTransformationMethod;
3141    }
3142
3143    private boolean isPasswordInputType(int inputType) {
3144        final int variation =
3145                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3146        return variation
3147                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
3148                || variation
3149                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
3150                || variation
3151                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
3152    }
3153
3154    private boolean isVisiblePasswordInputType(int inputType) {
3155        final int variation =
3156                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3157        return variation
3158                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
3159    }
3160
3161    /**
3162     * Directly change the content type integer of the text view, without
3163     * modifying any other state.
3164     * @see #setInputType(int)
3165     * @see android.text.InputType
3166     * @attr ref android.R.styleable#TextView_inputType
3167     */
3168    public void setRawInputType(int type) {
3169        mInputType = type;
3170    }
3171
3172    private void setInputType(int type, boolean direct) {
3173        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
3174        KeyListener input;
3175        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
3176            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
3177            TextKeyListener.Capitalize cap;
3178            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
3179                cap = TextKeyListener.Capitalize.CHARACTERS;
3180            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
3181                cap = TextKeyListener.Capitalize.WORDS;
3182            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
3183                cap = TextKeyListener.Capitalize.SENTENCES;
3184            } else {
3185                cap = TextKeyListener.Capitalize.NONE;
3186            }
3187            input = TextKeyListener.getInstance(autotext, cap);
3188        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
3189            input = DigitsKeyListener.getInstance(
3190                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
3191                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
3192        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
3193            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
3194                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
3195                    input = DateKeyListener.getInstance();
3196                    break;
3197                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
3198                    input = TimeKeyListener.getInstance();
3199                    break;
3200                default:
3201                    input = DateTimeKeyListener.getInstance();
3202                    break;
3203            }
3204        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
3205            input = DialerKeyListener.getInstance();
3206        } else {
3207            input = TextKeyListener.getInstance();
3208        }
3209        setRawInputType(type);
3210        if (direct) mInput = input;
3211        else {
3212            setKeyListenerOnly(input);
3213        }
3214    }
3215
3216    /**
3217     * Get the type of the content.
3218     *
3219     * @see #setInputType(int)
3220     * @see android.text.InputType
3221     */
3222    public int getInputType() {
3223        return mInputType;
3224    }
3225
3226    /**
3227     * Change the editor type integer associated with the text view, which
3228     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
3229     * has focus.
3230     * @see #getImeOptions
3231     * @see android.view.inputmethod.EditorInfo
3232     * @attr ref android.R.styleable#TextView_imeOptions
3233     */
3234    public void setImeOptions(int imeOptions) {
3235        if (mInputContentType == null) {
3236            mInputContentType = new InputContentType();
3237        }
3238        mInputContentType.imeOptions = imeOptions;
3239    }
3240
3241    /**
3242     * Get the type of the IME editor.
3243     *
3244     * @see #setImeOptions(int)
3245     * @see android.view.inputmethod.EditorInfo
3246     */
3247    public int getImeOptions() {
3248        return mInputContentType != null
3249                ? mInputContentType.imeOptions : EditorInfo.IME_NULL;
3250    }
3251
3252    /**
3253     * Change the custom IME action associated with the text view, which
3254     * will be reported to an IME with {@link EditorInfo#actionLabel}
3255     * and {@link EditorInfo#actionId} when it has focus.
3256     * @see #getImeActionLabel
3257     * @see #getImeActionId
3258     * @see android.view.inputmethod.EditorInfo
3259     * @attr ref android.R.styleable#TextView_imeActionLabel
3260     * @attr ref android.R.styleable#TextView_imeActionId
3261     */
3262    public void setImeActionLabel(CharSequence label, int actionId) {
3263        if (mInputContentType == null) {
3264            mInputContentType = new InputContentType();
3265        }
3266        mInputContentType.imeActionLabel = label;
3267        mInputContentType.imeActionId = actionId;
3268    }
3269
3270    /**
3271     * Get the IME action label previous set with {@link #setImeActionLabel}.
3272     *
3273     * @see #setImeActionLabel
3274     * @see android.view.inputmethod.EditorInfo
3275     */
3276    public CharSequence getImeActionLabel() {
3277        return mInputContentType != null
3278                ? mInputContentType.imeActionLabel : null;
3279    }
3280
3281    /**
3282     * Get the IME action ID previous set with {@link #setImeActionLabel}.
3283     *
3284     * @see #setImeActionLabel
3285     * @see android.view.inputmethod.EditorInfo
3286     */
3287    public int getImeActionId() {
3288        return mInputContentType != null
3289                ? mInputContentType.imeActionId : 0;
3290    }
3291
3292    /**
3293     * Set a special listener to be called when an action is performed
3294     * on the text view.  This will be called when the enter key is pressed,
3295     * or when an action supplied to the IME is selected by the user.  Setting
3296     * this means that the normal hard key event will not insert a newline
3297     * into the text view, even if it is multi-line; holding down the ALT
3298     * modifier will, however, allow the user to insert a newline character.
3299     */
3300    public void setOnEditorActionListener(OnEditorActionListener l) {
3301        if (mInputContentType == null) {
3302            mInputContentType = new InputContentType();
3303        }
3304        mInputContentType.onEditorActionListener = l;
3305    }
3306
3307    /**
3308     * Called when an attached input method calls
3309     * {@link InputConnection#performEditorAction(int)
3310     * InputConnection.performEditorAction()}
3311     * for this text view.  The default implementation will call your action
3312     * listener supplied to {@link #setOnEditorActionListener}, or perform
3313     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
3314     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
3315     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
3316     * EditorInfo.IME_ACTION_DONE}.
3317     *
3318     * <p>For backwards compatibility, if no IME options have been set and the
3319     * text view would not normally advance focus on enter, then
3320     * the NEXT and DONE actions received here will be turned into an enter
3321     * key down/up pair to go through the normal key handling.
3322     *
3323     * @param actionCode The code of the action being performed.
3324     *
3325     * @see #setOnEditorActionListener
3326     */
3327    public void onEditorAction(int actionCode) {
3328        final InputContentType ict = mInputContentType;
3329        if (ict != null) {
3330            if (ict.onEditorActionListener != null) {
3331                if (ict.onEditorActionListener.onEditorAction(this,
3332                        actionCode, null)) {
3333                    return;
3334                }
3335            }
3336
3337            // This is the handling for some default action.
3338            // Note that for backwards compatibility we don't do this
3339            // default handling if explicit ime options have not been given,
3340            // instead turning this into the normal enter key codes that an
3341            // app may be expecting.
3342            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
3343                View v = focusSearch(FOCUS_DOWN);
3344                if (v != null) {
3345                    if (!v.requestFocus(FOCUS_DOWN)) {
3346                        throw new IllegalStateException("focus search returned a view " +
3347                                "that wasn't able to take focus!");
3348                    }
3349                }
3350                return;
3351
3352            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
3353                View v = focusSearch(FOCUS_UP);
3354                if (v != null) {
3355                    if (!v.requestFocus(FOCUS_UP)) {
3356                        throw new IllegalStateException("focus search returned a view " +
3357                                "that wasn't able to take focus!");
3358                    }
3359                }
3360                return;
3361
3362            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
3363                InputMethodManager imm = InputMethodManager.peekInstance();
3364                if (imm != null && imm.isActive(this)) {
3365                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
3366                }
3367                return;
3368            }
3369        }
3370
3371        Handler h = getHandler();
3372        if (h != null) {
3373            long eventTime = SystemClock.uptimeMillis();
3374            h.sendMessage(h.obtainMessage(ViewRoot.DISPATCH_KEY_FROM_IME,
3375                    new KeyEvent(eventTime, eventTime,
3376                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
3377                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
3378                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3379                    | KeyEvent.FLAG_EDITOR_ACTION)));
3380            h.sendMessage(h.obtainMessage(ViewRoot.DISPATCH_KEY_FROM_IME,
3381                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
3382                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
3383                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
3384                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3385                    | KeyEvent.FLAG_EDITOR_ACTION)));
3386        }
3387    }
3388
3389    /**
3390     * Set the private content type of the text, which is the
3391     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
3392     * field that will be filled in when creating an input connection.
3393     *
3394     * @see #getPrivateImeOptions()
3395     * @see EditorInfo#privateImeOptions
3396     * @attr ref android.R.styleable#TextView_privateImeOptions
3397     */
3398    public void setPrivateImeOptions(String type) {
3399        if (mInputContentType == null) mInputContentType = new InputContentType();
3400        mInputContentType.privateImeOptions = type;
3401    }
3402
3403    /**
3404     * Get the private type of the content.
3405     *
3406     * @see #setPrivateImeOptions(String)
3407     * @see EditorInfo#privateImeOptions
3408     */
3409    public String getPrivateImeOptions() {
3410        return mInputContentType != null
3411                ? mInputContentType.privateImeOptions : null;
3412    }
3413
3414    /**
3415     * Set the extra input data of the text, which is the
3416     * {@link EditorInfo#extras TextBoxAttribute.extras}
3417     * Bundle that will be filled in when creating an input connection.  The
3418     * given integer is the resource ID of an XML resource holding an
3419     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
3420     *
3421     * @see #getInputExtras(boolean)
3422     * @see EditorInfo#extras
3423     * @attr ref android.R.styleable#TextView_editorExtras
3424     */
3425    public void setInputExtras(int xmlResId)
3426            throws XmlPullParserException, IOException {
3427        XmlResourceParser parser = getResources().getXml(xmlResId);
3428        if (mInputContentType == null) mInputContentType = new InputContentType();
3429        mInputContentType.extras = new Bundle();
3430        getResources().parseBundleExtras(parser, mInputContentType.extras);
3431    }
3432
3433    /**
3434     * Retrieve the input extras currently associated with the text view, which
3435     * can be viewed as well as modified.
3436     *
3437     * @param create If true, the extras will be created if they don't already
3438     * exist.  Otherwise, null will be returned if none have been created.
3439     * @see #setInputExtras(int)
3440     * @see EditorInfo#extras
3441     * @attr ref android.R.styleable#TextView_editorExtras
3442     */
3443    public Bundle getInputExtras(boolean create) {
3444        if (mInputContentType == null) {
3445            if (!create) return null;
3446            mInputContentType = new InputContentType();
3447        }
3448        if (mInputContentType.extras == null) {
3449            if (!create) return null;
3450            mInputContentType.extras = new Bundle();
3451        }
3452        return mInputContentType.extras;
3453    }
3454
3455    /**
3456     * Returns the error message that was set to be displayed with
3457     * {@link #setError}, or <code>null</code> if no error was set
3458     * or if it the error was cleared by the widget after user input.
3459     */
3460    public CharSequence getError() {
3461        return mError;
3462    }
3463
3464    /**
3465     * Sets the right-hand compound drawable of the TextView to the "error"
3466     * icon and sets an error message that will be displayed in a popup when
3467     * the TextView has focus.  The icon and error message will be reset to
3468     * null when any key events cause changes to the TextView's text.  If the
3469     * <code>error</code> is <code>null</code>, the error message and icon
3470     * will be cleared.
3471     */
3472    @android.view.RemotableViewMethod
3473    public void setError(CharSequence error) {
3474        if (error == null) {
3475            setError(null, null);
3476        } else {
3477            Drawable dr = getContext().getResources().
3478                getDrawable(com.android.internal.R.drawable.indicator_input_error);
3479
3480            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
3481            setError(error, dr);
3482        }
3483    }
3484
3485    /**
3486     * Sets the right-hand compound drawable of the TextView to the specified
3487     * icon and sets an error message that will be displayed in a popup when
3488     * the TextView has focus.  The icon and error message will be reset to
3489     * null when any key events cause changes to the TextView's text.  The
3490     * drawable must already have had {@link Drawable#setBounds} set on it.
3491     * If the <code>error</code> is <code>null</code>, the error message will
3492     * be cleared (and you should provide a <code>null</code> icon as well).
3493     */
3494    public void setError(CharSequence error, Drawable icon) {
3495        error = TextUtils.stringOrSpannedString(error);
3496
3497        mError = error;
3498        mErrorWasChanged = true;
3499        final Drawables dr = mDrawables;
3500        if (dr != null) {
3501            setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop, icon, dr.mDrawableBottom);
3502        } else {
3503            setCompoundDrawables(null, null, icon, null);
3504        }
3505
3506        if (error == null) {
3507            if (mPopup != null) {
3508                if (mPopup.isShowing()) {
3509                    mPopup.dismiss();
3510                }
3511
3512                mPopup = null;
3513            }
3514        } else {
3515            if (isFocused()) {
3516                showError();
3517            }
3518        }
3519    }
3520
3521    private void showError() {
3522        if (getWindowToken() == null) {
3523            mShowErrorAfterAttach = true;
3524            return;
3525        }
3526
3527        if (mPopup == null) {
3528            LayoutInflater inflater = LayoutInflater.from(getContext());
3529            final TextView err = (TextView) inflater.inflate(
3530                    com.android.internal.R.layout.textview_hint, null);
3531
3532            final float scale = getResources().getDisplayMetrics().density;
3533            mPopup = new ErrorPopup(err, (int) (200 * scale + 0.5f), (int) (50 * scale + 0.5f));
3534            mPopup.setFocusable(false);
3535            // The user is entering text, so the input method is needed.  We
3536            // don't want the popup to be displayed on top of it.
3537            mPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED);
3538        }
3539
3540        TextView tv = (TextView) mPopup.getContentView();
3541        chooseSize(mPopup, mError, tv);
3542        tv.setText(mError);
3543
3544        mPopup.showAsDropDown(this, getErrorX(), getErrorY());
3545        mPopup.fixDirection(mPopup.isAboveAnchor());
3546    }
3547
3548    private static class ErrorPopup extends PopupWindow {
3549        private boolean mAbove = false;
3550        private final TextView mView;
3551        private int mPopupInlineErrorBackgroundId = 0;
3552        private int mPopupInlineErrorAboveBackgroundId = 0;
3553
3554        ErrorPopup(TextView v, int width, int height) {
3555            super(v, width, height);
3556            mView = v;
3557            // Make sure the TextView has a background set as it will be used the first time it is
3558            // shown and positionned. Initialized with below background, which should have
3559            // dimensions identical to the above version for this to work (and is more likely).
3560            mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId,
3561                    com.android.internal.R.styleable.Theme_errorMessageBackground);
3562            mView.setBackgroundResource(mPopupInlineErrorBackgroundId);
3563        }
3564
3565        void fixDirection(boolean above) {
3566            mAbove = above;
3567
3568            if (above) {
3569                mPopupInlineErrorAboveBackgroundId =
3570                    getResourceId(mPopupInlineErrorAboveBackgroundId,
3571                            com.android.internal.R.styleable.Theme_errorMessageAboveBackground);
3572            } else {
3573                mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId,
3574                        com.android.internal.R.styleable.Theme_errorMessageBackground);
3575            }
3576
3577            mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId :
3578                mPopupInlineErrorBackgroundId);
3579        }
3580
3581        private int getResourceId(int currentId, int index) {
3582            if (currentId == 0) {
3583                TypedArray styledAttributes = mView.getContext().obtainStyledAttributes(
3584                        R.styleable.Theme);
3585                currentId = styledAttributes.getResourceId(index, 0);
3586                styledAttributes.recycle();
3587            }
3588            return currentId;
3589        }
3590
3591        @Override
3592        public void update(int x, int y, int w, int h, boolean force) {
3593            super.update(x, y, w, h, force);
3594
3595            boolean above = isAboveAnchor();
3596            if (above != mAbove) {
3597                fixDirection(above);
3598            }
3599        }
3600    }
3601
3602    /**
3603     * Returns the Y offset to make the pointy top of the error point
3604     * at the middle of the error icon.
3605     */
3606    private int getErrorX() {
3607        /*
3608         * The "25" is the distance between the point and the right edge
3609         * of the background
3610         */
3611        final float scale = getResources().getDisplayMetrics().density;
3612
3613        final Drawables dr = mDrawables;
3614        return getWidth() - mPopup.getWidth() - getPaddingRight() -
3615                (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f);
3616    }
3617
3618    /**
3619     * Returns the Y offset to make the pointy top of the error point
3620     * at the bottom of the error icon.
3621     */
3622    private int getErrorY() {
3623        /*
3624         * Compound, not extended, because the icon is not clipped
3625         * if the text height is smaller.
3626         */
3627        final int compoundPaddingTop = getCompoundPaddingTop();
3628        int vspace = mBottom - mTop - getCompoundPaddingBottom() - compoundPaddingTop;
3629
3630        final Drawables dr = mDrawables;
3631        int icontop = compoundPaddingTop +
3632                (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2;
3633
3634        /*
3635         * The "2" is the distance between the point and the top edge
3636         * of the background.
3637         */
3638        final float scale = getResources().getDisplayMetrics().density;
3639        return icontop + (dr != null ? dr.mDrawableHeightRight : 0) - getHeight() -
3640                (int) (2 * scale + 0.5f);
3641    }
3642
3643    private void hideError() {
3644        if (mPopup != null) {
3645            if (mPopup.isShowing()) {
3646                mPopup.dismiss();
3647            }
3648        }
3649
3650        mShowErrorAfterAttach = false;
3651    }
3652
3653    private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) {
3654        int wid = tv.getPaddingLeft() + tv.getPaddingRight();
3655        int ht = tv.getPaddingTop() + tv.getPaddingBottom();
3656
3657        /*
3658         * Figure out how big the text would be if we laid it out to the
3659         * full width of this view minus the border.
3660         */
3661        int cap = getWidth() - wid;
3662        if (cap < 0) {
3663            cap = 200; // We must not be measured yet -- setFrame() will fix it.
3664        }
3665
3666        Layout l = new StaticLayout(text, tv.getPaint(), cap,
3667                                    Layout.Alignment.ALIGN_NORMAL, 1, 0, true);
3668        float max = 0;
3669        for (int i = 0; i < l.getLineCount(); i++) {
3670            max = Math.max(max, l.getLineWidth(i));
3671        }
3672
3673        /*
3674         * Now set the popup size to be big enough for the text plus the border.
3675         */
3676        pop.setWidth(wid + (int) Math.ceil(max));
3677        pop.setHeight(ht + l.getHeight());
3678    }
3679
3680
3681    @Override
3682    protected boolean setFrame(int l, int t, int r, int b) {
3683        boolean result = super.setFrame(l, t, r, b);
3684
3685        if (mPopup != null) {
3686            TextView tv = (TextView) mPopup.getContentView();
3687            chooseSize(mPopup, mError, tv);
3688            mPopup.update(this, getErrorX(), getErrorY(),
3689                          mPopup.getWidth(), mPopup.getHeight());
3690        }
3691
3692        restartMarqueeIfNeeded();
3693
3694        return result;
3695    }
3696
3697    private void restartMarqueeIfNeeded() {
3698        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3699            mRestartMarquee = false;
3700            startMarquee();
3701        }
3702    }
3703
3704    /**
3705     * Sets the list of input filters that will be used if the buffer is
3706     * Editable.  Has no effect otherwise.
3707     *
3708     * @attr ref android.R.styleable#TextView_maxLength
3709     */
3710    public void setFilters(InputFilter[] filters) {
3711        if (filters == null) {
3712            throw new IllegalArgumentException();
3713        }
3714
3715        mFilters = filters;
3716
3717        if (mText instanceof Editable) {
3718            setFilters((Editable) mText, filters);
3719        }
3720    }
3721
3722    /**
3723     * Sets the list of input filters on the specified Editable,
3724     * and includes mInput in the list if it is an InputFilter.
3725     */
3726    private void setFilters(Editable e, InputFilter[] filters) {
3727        if (mInput instanceof InputFilter) {
3728            InputFilter[] nf = new InputFilter[filters.length + 1];
3729
3730            System.arraycopy(filters, 0, nf, 0, filters.length);
3731            nf[filters.length] = (InputFilter) mInput;
3732
3733            e.setFilters(nf);
3734        } else {
3735            e.setFilters(filters);
3736        }
3737    }
3738
3739    /**
3740     * Returns the current list of input filters.
3741     */
3742    public InputFilter[] getFilters() {
3743        return mFilters;
3744    }
3745
3746    /////////////////////////////////////////////////////////////////////////
3747
3748    private int getVerticalOffset(boolean forceNormal) {
3749        int voffset = 0;
3750        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3751
3752        Layout l = mLayout;
3753        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3754            l = mHintLayout;
3755        }
3756
3757        if (gravity != Gravity.TOP) {
3758            int boxht;
3759
3760            if (l == mHintLayout) {
3761                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3762                        getCompoundPaddingBottom();
3763            } else {
3764                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3765                        getExtendedPaddingBottom();
3766            }
3767            int textht = l.getHeight();
3768
3769            if (textht < boxht) {
3770                if (gravity == Gravity.BOTTOM)
3771                    voffset = boxht - textht;
3772                else // (gravity == Gravity.CENTER_VERTICAL)
3773                    voffset = (boxht - textht) >> 1;
3774            }
3775        }
3776        return voffset;
3777    }
3778
3779    private int getBottomVerticalOffset(boolean forceNormal) {
3780        int voffset = 0;
3781        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3782
3783        Layout l = mLayout;
3784        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3785            l = mHintLayout;
3786        }
3787
3788        if (gravity != Gravity.BOTTOM) {
3789            int boxht;
3790
3791            if (l == mHintLayout) {
3792                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3793                        getCompoundPaddingBottom();
3794            } else {
3795                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3796                        getExtendedPaddingBottom();
3797            }
3798            int textht = l.getHeight();
3799
3800            if (textht < boxht) {
3801                if (gravity == Gravity.TOP)
3802                    voffset = boxht - textht;
3803                else // (gravity == Gravity.CENTER_VERTICAL)
3804                    voffset = (boxht - textht) >> 1;
3805            }
3806        }
3807        return voffset;
3808    }
3809
3810    private void invalidateCursorPath() {
3811        if (mHighlightPathBogus) {
3812            invalidateCursor();
3813        } else {
3814            final int horizontalPadding = getCompoundPaddingLeft();
3815            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
3816
3817            if (mCursorCount == 0) {
3818                synchronized (sTempRect) {
3819                    /*
3820                     * The reason for this concern about the thickness of the
3821                     * cursor and doing the floor/ceil on the coordinates is that
3822                     * some EditTexts (notably textfields in the Browser) have
3823                     * anti-aliased text where not all the characters are
3824                     * necessarily at integer-multiple locations.  This should
3825                     * make sure the entire cursor gets invalidated instead of
3826                     * sometimes missing half a pixel.
3827                     */
3828                    float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
3829                    if (thick < 1.0f) {
3830                        thick = 1.0f;
3831                    }
3832
3833                    thick /= 2.0f;
3834
3835                    mHighlightPath.computeBounds(sTempRect, false);
3836
3837                    invalidate((int) FloatMath.floor(horizontalPadding + sTempRect.left - thick),
3838                            (int) FloatMath.floor(verticalPadding + sTempRect.top - thick),
3839                            (int) FloatMath.ceil(horizontalPadding + sTempRect.right + thick),
3840                            (int) FloatMath.ceil(verticalPadding + sTempRect.bottom + thick));
3841                }
3842            } else {
3843                for (int i = 0; i < mCursorCount; i++) {
3844                    Rect bounds = mCursorDrawable[i].getBounds();
3845                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
3846                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
3847                }
3848            }
3849        }
3850    }
3851
3852    private void invalidateCursor() {
3853        int where = getSelectionEnd();
3854
3855        invalidateCursor(where, where, where);
3856    }
3857
3858    private void invalidateCursor(int a, int b, int c) {
3859        if (mLayout == null) {
3860            invalidate();
3861        } else {
3862            if (a >= 0 || b >= 0 || c >= 0) {
3863                int first = Math.min(Math.min(a, b), c);
3864                int last = Math.max(Math.max(a, b), c);
3865
3866                int line = mLayout.getLineForOffset(first);
3867                int top = mLayout.getLineTop(line);
3868
3869                // This is ridiculous, but the descent from the line above
3870                // can hang down into the line we really want to redraw,
3871                // so we have to invalidate part of the line above to make
3872                // sure everything that needs to be redrawn really is.
3873                // (But not the whole line above, because that would cause
3874                // the same problem with the descenders on the line above it!)
3875                if (line > 0) {
3876                    top -= mLayout.getLineDescent(line - 1);
3877                }
3878
3879                int line2;
3880
3881                if (first == last)
3882                    line2 = line;
3883                else
3884                    line2 = mLayout.getLineForOffset(last);
3885
3886                int bottom = mLayout.getLineTop(line2 + 1);
3887
3888                final int horizontalPadding = getCompoundPaddingLeft();
3889                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
3890
3891                // If used, the cursor drawables can have an arbitrary dimension that can go beyond
3892                // the invalidated lines specified above.
3893                for (int i = 0; i < mCursorCount; i++) {
3894                    Rect bounds = mCursorDrawable[i].getBounds();
3895                    top = Math.min(top, bounds.top);
3896                    bottom = Math.max(bottom, bounds.bottom);
3897                    // Horizontal bounds are already full width, no need to update
3898                }
3899
3900                invalidate(horizontalPadding + mScrollX, top + verticalPadding,
3901                        horizontalPadding + mScrollX + getWidth() -
3902                        getCompoundPaddingLeft() - getCompoundPaddingRight(),
3903                        bottom + verticalPadding);
3904            }
3905        }
3906    }
3907
3908    private void registerForPreDraw() {
3909        final ViewTreeObserver observer = getViewTreeObserver();
3910
3911        if (mPreDrawState == PREDRAW_NOT_REGISTERED) {
3912            observer.addOnPreDrawListener(this);
3913            mPreDrawState = PREDRAW_PENDING;
3914        } else if (mPreDrawState == PREDRAW_DONE) {
3915            mPreDrawState = PREDRAW_PENDING;
3916        }
3917
3918        // else state is PREDRAW_PENDING, so keep waiting.
3919    }
3920
3921    /**
3922     * {@inheritDoc}
3923     */
3924    public boolean onPreDraw() {
3925        if (mPreDrawState != PREDRAW_PENDING) {
3926            return true;
3927        }
3928
3929        if (mLayout == null) {
3930            assumeLayout();
3931        }
3932
3933        boolean changed = false;
3934
3935        if (mMovement != null) {
3936            /* This code also provides auto-scrolling when a cursor is moved using a
3937             * CursorController (insertion point or selection limits).
3938             * For selection, ensure start or end is visible depending on controller's state.
3939             */
3940            int curs = getSelectionEnd();
3941            // Do not create the controller if it is not already created.
3942            if (mSelectionModifierCursorController != null &&
3943                    mSelectionModifierCursorController.isSelectionStartDragged()) {
3944                curs = getSelectionStart();
3945            }
3946
3947            /*
3948             * TODO: This should really only keep the end in view if
3949             * it already was before the text changed.  I'm not sure
3950             * of a good way to tell from here if it was.
3951             */
3952            if (curs < 0 &&
3953                  (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
3954                curs = mText.length();
3955            }
3956
3957            if (curs >= 0) {
3958                changed = bringPointIntoView(curs);
3959            }
3960        } else {
3961            changed = bringTextIntoView();
3962        }
3963
3964        // This has to be checked here since:
3965        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
3966        //   a screen rotation) since layout is not yet initialized at that point.
3967        if (mCreatedWithASelection) {
3968            startSelectionActionMode();
3969            mCreatedWithASelection = false;
3970        }
3971
3972        // Phone specific code (there is no ExtractEditText on tablets).
3973        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
3974        // not be set. Do the test here instead.
3975        if (this instanceof ExtractEditText && hasSelection()) {
3976            startSelectionActionMode();
3977        }
3978
3979        mPreDrawState = PREDRAW_DONE;
3980        return !changed;
3981    }
3982
3983    @Override
3984    protected void onAttachedToWindow() {
3985        super.onAttachedToWindow();
3986
3987        mTemporaryDetach = false;
3988
3989        if (mShowErrorAfterAttach) {
3990            showError();
3991            mShowErrorAfterAttach = false;
3992        }
3993
3994        final ViewTreeObserver observer = getViewTreeObserver();
3995        // No need to create the controller.
3996        // The get method will add the listener on controller creation.
3997        if (mInsertionPointCursorController != null) {
3998            observer.addOnTouchModeChangeListener(mInsertionPointCursorController);
3999        }
4000        if (mSelectionModifierCursorController != null) {
4001            observer.addOnTouchModeChangeListener(mSelectionModifierCursorController);
4002        }
4003    }
4004
4005    @Override
4006    protected void onDetachedFromWindow() {
4007        super.onDetachedFromWindow();
4008
4009        final ViewTreeObserver observer = getViewTreeObserver();
4010        if (mPreDrawState != PREDRAW_NOT_REGISTERED) {
4011            observer.removeOnPreDrawListener(this);
4012            mPreDrawState = PREDRAW_NOT_REGISTERED;
4013        }
4014
4015        if (mError != null) {
4016            hideError();
4017        }
4018
4019        if (mBlink != null) {
4020            mBlink.removeCallbacks(mBlink);
4021        }
4022
4023        if (mInsertionPointCursorController != null) {
4024            mInsertionPointCursorController.onDetached();
4025        }
4026
4027        if (mSelectionModifierCursorController != null) {
4028            mSelectionModifierCursorController.onDetached();
4029        }
4030
4031        hideControllers();
4032    }
4033
4034    @Override
4035    protected boolean isPaddingOffsetRequired() {
4036        return mShadowRadius != 0 || mDrawables != null;
4037    }
4038
4039    @Override
4040    protected int getLeftPaddingOffset() {
4041        return getCompoundPaddingLeft() - mPaddingLeft +
4042                (int) Math.min(0, mShadowDx - mShadowRadius);
4043    }
4044
4045    @Override
4046    protected int getTopPaddingOffset() {
4047        return (int) Math.min(0, mShadowDy - mShadowRadius);
4048    }
4049
4050    @Override
4051    protected int getBottomPaddingOffset() {
4052        return (int) Math.max(0, mShadowDy + mShadowRadius);
4053    }
4054
4055    @Override
4056    protected int getRightPaddingOffset() {
4057        return -(getCompoundPaddingRight() - mPaddingRight) +
4058                (int) Math.max(0, mShadowDx + mShadowRadius);
4059    }
4060
4061    @Override
4062    protected boolean verifyDrawable(Drawable who) {
4063        final boolean verified = super.verifyDrawable(who);
4064        if (!verified && mDrawables != null) {
4065            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
4066                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom;
4067        }
4068        return verified;
4069    }
4070
4071    @Override
4072    public void jumpDrawablesToCurrentState() {
4073        super.jumpDrawablesToCurrentState();
4074        if (mDrawables != null) {
4075            if (mDrawables.mDrawableLeft != null) {
4076                mDrawables.mDrawableLeft.jumpToCurrentState();
4077            }
4078            if (mDrawables.mDrawableTop != null) {
4079                mDrawables.mDrawableTop.jumpToCurrentState();
4080            }
4081            if (mDrawables.mDrawableRight != null) {
4082                mDrawables.mDrawableRight.jumpToCurrentState();
4083            }
4084            if (mDrawables.mDrawableBottom != null) {
4085                mDrawables.mDrawableBottom.jumpToCurrentState();
4086            }
4087        }
4088    }
4089
4090    @Override
4091    public void invalidateDrawable(Drawable drawable) {
4092        if (verifyDrawable(drawable)) {
4093            final Rect dirty = drawable.getBounds();
4094            int scrollX = mScrollX;
4095            int scrollY = mScrollY;
4096
4097            // IMPORTANT: The coordinates below are based on the coordinates computed
4098            // for each compound drawable in onDraw(). Make sure to update each section
4099            // accordingly.
4100            final TextView.Drawables drawables = mDrawables;
4101            if (drawables != null) {
4102                if (drawable == drawables.mDrawableLeft) {
4103                    final int compoundPaddingTop = getCompoundPaddingTop();
4104                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4105                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4106
4107                    scrollX += mPaddingLeft;
4108                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
4109                } else if (drawable == drawables.mDrawableRight) {
4110                    final int compoundPaddingTop = getCompoundPaddingTop();
4111                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4112                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4113
4114                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
4115                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
4116                } else if (drawable == drawables.mDrawableTop) {
4117                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4118                    final int compoundPaddingRight = getCompoundPaddingRight();
4119                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4120
4121                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
4122                    scrollY += mPaddingTop;
4123                } else if (drawable == drawables.mDrawableBottom) {
4124                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4125                    final int compoundPaddingRight = getCompoundPaddingRight();
4126                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4127
4128                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
4129                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
4130                }
4131            }
4132
4133            invalidate(dirty.left + scrollX, dirty.top + scrollY,
4134                    dirty.right + scrollX, dirty.bottom + scrollY);
4135        }
4136    }
4137
4138    @Override
4139    protected boolean onSetAlpha(int alpha) {
4140        // Alpha is supported if and only if the drawing can be done in one pass.
4141        // TODO text with spans with a background color currently do not respect this alpha.
4142        if (getBackground() == null) {
4143            mCurrentAlpha = alpha;
4144            final Drawables dr = mDrawables;
4145            if (dr != null) {
4146                if (dr.mDrawableLeft != null) dr.mDrawableLeft.mutate().setAlpha(alpha);
4147                if (dr.mDrawableTop != null) dr.mDrawableTop.mutate().setAlpha(alpha);
4148                if (dr.mDrawableRight != null) dr.mDrawableRight.mutate().setAlpha(alpha);
4149                if (dr.mDrawableBottom != null) dr.mDrawableBottom.mutate().setAlpha(alpha);
4150            }
4151            return true;
4152        }
4153
4154        mCurrentAlpha = 255;
4155        return false;
4156    }
4157
4158    /**
4159     * When a TextView is used to display a useful piece of information to the user (such as a
4160     * contact's address), it should be made selectable, so that the user can select and copy this
4161     * content.
4162     *
4163     * Use {@link #setTextIsSelectable(boolean)} or the
4164     * {@link android.R.styleable#TextView_textIsSelectable} XML attribute to make this TextView
4165     * selectable (text is not selectable by default).
4166     *
4167     * Note that the content of an EditText is always selectable.
4168     *
4169     * @return True if the text displayed in this TextView can be selected by the user.
4170     *
4171     * @attr ref android.R.styleable#TextView_textIsSelectable
4172     */
4173    public boolean isTextSelectable() {
4174        return mTextIsSelectable;
4175    }
4176
4177    /**
4178     * Sets whether or not (default) the content of this view is selectable by the user.
4179     *
4180     * Note that this methods affect the {@link #setFocusable(boolean)},
4181     * {@link #setFocusableInTouchMode(boolean)} {@link #setClickable(boolean)} and
4182     * {@link #setLongClickable(boolean)} states and you may want to restore these if they were
4183     * customized.
4184     *
4185     * See {@link #isTextSelectable} for details.
4186     *
4187     * @param selectable Whether or not the content of this TextView should be selectable.
4188     */
4189    public void setTextIsSelectable(boolean selectable) {
4190        if (mTextIsSelectable == selectable) return;
4191
4192        mTextIsSelectable = selectable;
4193
4194        setFocusableInTouchMode(selectable);
4195        setFocusable(selectable);
4196        setClickable(selectable);
4197        setLongClickable(selectable);
4198
4199        // mInputType is already EditorInfo.TYPE_NULL and mInput is null;
4200
4201        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
4202        setText(getText(), selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
4203
4204        // Called by setText above, but safer in case of future code changes
4205        prepareCursorControllers();
4206    }
4207
4208    @Override
4209    protected int[] onCreateDrawableState(int extraSpace) {
4210        final int[] drawableState;
4211
4212        if (mSingleLine) {
4213            drawableState = super.onCreateDrawableState(extraSpace);
4214        } else {
4215            drawableState = super.onCreateDrawableState(extraSpace + 1);
4216            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
4217        }
4218
4219        if (mTextIsSelectable) {
4220            // Disable pressed state, which was introduced when TextView was made clickable.
4221            // Prevents text color change.
4222            // setClickable(false) would have a similar effect, but it also disables focus changes
4223            // and long press actions, which are both needed by text selection.
4224            final int length = drawableState.length;
4225            for (int i = 0; i < length; i++) {
4226                if (drawableState[i] == R.attr.state_pressed) {
4227                    final int[] nonPressedState = new int[length - 1];
4228                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
4229                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
4230                    return nonPressedState;
4231                }
4232            }
4233        }
4234
4235        return drawableState;
4236    }
4237
4238    @Override
4239    protected void onDraw(Canvas canvas) {
4240        if (mPreDrawState == PREDRAW_DONE) {
4241            final ViewTreeObserver observer = getViewTreeObserver();
4242            observer.removeOnPreDrawListener(this);
4243            mPreDrawState = PREDRAW_NOT_REGISTERED;
4244        }
4245
4246        if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return;
4247
4248        restartMarqueeIfNeeded();
4249
4250        // Draw the background for this view
4251        super.onDraw(canvas);
4252
4253        final int compoundPaddingLeft = getCompoundPaddingLeft();
4254        final int compoundPaddingTop = getCompoundPaddingTop();
4255        final int compoundPaddingRight = getCompoundPaddingRight();
4256        final int compoundPaddingBottom = getCompoundPaddingBottom();
4257        final int scrollX = mScrollX;
4258        final int scrollY = mScrollY;
4259        final int right = mRight;
4260        final int left = mLeft;
4261        final int bottom = mBottom;
4262        final int top = mTop;
4263
4264        final Drawables dr = mDrawables;
4265        if (dr != null) {
4266            /*
4267             * Compound, not extended, because the icon is not clipped
4268             * if the text height is smaller.
4269             */
4270
4271            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
4272            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
4273
4274            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4275            // Make sure to update invalidateDrawable() when changing this code.
4276            if (dr.mDrawableLeft != null) {
4277                canvas.save();
4278                canvas.translate(scrollX + mPaddingLeft,
4279                                 scrollY + compoundPaddingTop +
4280                                 (vspace - dr.mDrawableHeightLeft) / 2);
4281                dr.mDrawableLeft.draw(canvas);
4282                canvas.restore();
4283            }
4284
4285            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4286            // Make sure to update invalidateDrawable() when changing this code.
4287            if (dr.mDrawableRight != null) {
4288                canvas.save();
4289                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
4290                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
4291                dr.mDrawableRight.draw(canvas);
4292                canvas.restore();
4293            }
4294
4295            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4296            // Make sure to update invalidateDrawable() when changing this code.
4297            if (dr.mDrawableTop != null) {
4298                canvas.save();
4299                canvas.translate(scrollX + compoundPaddingLeft + (hspace - dr.mDrawableWidthTop) / 2,
4300                        scrollY + mPaddingTop);
4301                dr.mDrawableTop.draw(canvas);
4302                canvas.restore();
4303            }
4304
4305            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4306            // Make sure to update invalidateDrawable() when changing this code.
4307            if (dr.mDrawableBottom != null) {
4308                canvas.save();
4309                canvas.translate(scrollX + compoundPaddingLeft +
4310                        (hspace - dr.mDrawableWidthBottom) / 2,
4311                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
4312                dr.mDrawableBottom.draw(canvas);
4313                canvas.restore();
4314            }
4315        }
4316
4317        int color = mCurTextColor;
4318
4319        if (mLayout == null) {
4320            assumeLayout();
4321        }
4322
4323        Layout layout = mLayout;
4324        int cursorcolor = color;
4325
4326        if (mHint != null && mText.length() == 0) {
4327            if (mHintTextColor != null) {
4328                color = mCurHintTextColor;
4329            }
4330
4331            layout = mHintLayout;
4332        }
4333
4334        mTextPaint.setColor(color);
4335        if (mCurrentAlpha != 255) {
4336            // If set, the alpha will override the color's alpha. Multiply the alphas.
4337            mTextPaint.setAlpha((mCurrentAlpha * Color.alpha(color)) / 255);
4338        }
4339        mTextPaint.drawableState = getDrawableState();
4340
4341        canvas.save();
4342        /*  Would be faster if we didn't have to do this. Can we chop the
4343            (displayable) text so that we don't need to do this ever?
4344        */
4345
4346        int extendedPaddingTop = getExtendedPaddingTop();
4347        int extendedPaddingBottom = getExtendedPaddingBottom();
4348
4349        float clipLeft = compoundPaddingLeft + scrollX;
4350        float clipTop = extendedPaddingTop + scrollY;
4351        float clipRight = right - left - compoundPaddingRight + scrollX;
4352        float clipBottom = bottom - top - extendedPaddingBottom + scrollY;
4353
4354        if (mShadowRadius != 0) {
4355            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
4356            clipRight += Math.max(0, mShadowDx + mShadowRadius);
4357
4358            clipTop += Math.min(0, mShadowDy - mShadowRadius);
4359            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
4360        }
4361
4362        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
4363
4364        int voffsetText = 0;
4365        int voffsetCursor = 0;
4366
4367        // translate in by our padding
4368        {
4369            /* shortcircuit calling getVerticaOffset() */
4370            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4371                voffsetText = getVerticalOffset(false);
4372                voffsetCursor = getVerticalOffset(true);
4373            }
4374            canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
4375        }
4376
4377        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4378            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
4379                    (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
4380                canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft -
4381                        getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f);
4382            }
4383
4384            if (mMarquee != null && mMarquee.isRunning()) {
4385                canvas.translate(-mMarquee.mScroll, 0.0f);
4386            }
4387        }
4388
4389        Path highlight = null;
4390        int selStart = -1, selEnd = -1;
4391        boolean drawCursor = false;
4392
4393        //  If there is no movement method, then there can be no selection.
4394        //  Check that first and attempt to skip everything having to do with
4395        //  the cursor.
4396        //  XXX This is not strictly true -- a program could set the
4397        //  selection manually if it really wanted to.
4398        if (mMovement != null && (isFocused() || isPressed())) {
4399            selStart = getSelectionStart();
4400            selEnd = getSelectionEnd();
4401
4402            if ((isCursorVisible() || mTextIsSelectable) && selStart >= 0 && isEnabled()) {
4403                if (mHighlightPath == null)
4404                    mHighlightPath = new Path();
4405
4406                if (selStart == selEnd) {
4407                    if (!mTextIsSelectable &&
4408                            (SystemClock.uptimeMillis() - mShowCursor) % (2 * BLINK) < BLINK) {
4409                        if (mHighlightPathBogus) {
4410                            mHighlightPath.reset();
4411                            mLayout.getCursorPath(selStart, mHighlightPath, mText);
4412                            updateCursorsPositions();
4413                            mHighlightPathBogus = false;
4414                        }
4415
4416                        // XXX should pass to skin instead of drawing directly
4417                        mHighlightPaint.setColor(cursorcolor);
4418                        if (mCurrentAlpha != 255) {
4419                            mHighlightPaint.setAlpha(
4420                                    (mCurrentAlpha * Color.alpha(cursorcolor)) / 255);
4421                        }
4422                        mHighlightPaint.setStyle(Paint.Style.STROKE);
4423                        highlight = mHighlightPath;
4424                        drawCursor = mCursorCount > 0;
4425                    }
4426                } else {
4427                    if (mHighlightPathBogus) {
4428                        mHighlightPath.reset();
4429                        mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4430                        mHighlightPathBogus = false;
4431                    }
4432
4433                    // XXX should pass to skin instead of drawing directly
4434                    mHighlightPaint.setColor(mHighlightColor);
4435                    if (mCurrentAlpha != 255) {
4436                        mHighlightPaint.setAlpha(
4437                                (mCurrentAlpha * Color.alpha(mHighlightColor)) / 255);
4438                    }
4439                    mHighlightPaint.setStyle(Paint.Style.FILL);
4440
4441                    highlight = mHighlightPath;
4442                }
4443            }
4444        }
4445
4446        /*  Comment out until we decide what to do about animations
4447        boolean isLinearTextOn = false;
4448        if (currentTransformation != null) {
4449            isLinearTextOn = mTextPaint.isLinearTextOn();
4450            Matrix m = currentTransformation.getMatrix();
4451            if (!m.isIdentity()) {
4452                // mTextPaint.setLinearTextOn(true);
4453            }
4454        }
4455        */
4456
4457        final InputMethodState ims = mInputMethodState;
4458        final int cursorOffsetVertical = voffsetCursor - voffsetText;
4459        if (ims != null && ims.mBatchEditNesting == 0) {
4460            InputMethodManager imm = InputMethodManager.peekInstance();
4461            if (imm != null) {
4462                if (imm.isActive(this)) {
4463                    boolean reported = false;
4464                    if (ims.mContentChanged || ims.mSelectionModeChanged) {
4465                        // We are in extract mode and the content has changed
4466                        // in some way... just report complete new text to the
4467                        // input method.
4468                        reported = reportExtractedText();
4469                    }
4470                    if (!reported && highlight != null) {
4471                        int candStart = -1;
4472                        int candEnd = -1;
4473                        if (mText instanceof Spannable) {
4474                            Spannable sp = (Spannable)mText;
4475                            candStart = EditableInputConnection.getComposingSpanStart(sp);
4476                            candEnd = EditableInputConnection.getComposingSpanEnd(sp);
4477                        }
4478                        imm.updateSelection(this, selStart, selEnd, candStart, candEnd);
4479                    }
4480                }
4481
4482                if (imm.isWatchingCursor(this) && highlight != null) {
4483                    highlight.computeBounds(ims.mTmpRectF, true);
4484                    ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0;
4485
4486                    canvas.getMatrix().mapPoints(ims.mTmpOffset);
4487                    ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]);
4488
4489                    ims.mTmpRectF.offset(0, cursorOffsetVertical);
4490
4491                    ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5),
4492                            (int)(ims.mTmpRectF.top + 0.5),
4493                            (int)(ims.mTmpRectF.right + 0.5),
4494                            (int)(ims.mTmpRectF.bottom + 0.5));
4495
4496                    imm.updateCursor(this,
4497                            ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top,
4498                            ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom);
4499                }
4500            }
4501        }
4502
4503        if (mCorrectionHighlighter != null) {
4504            mCorrectionHighlighter.draw(canvas, cursorOffsetVertical);
4505        }
4506
4507        if (drawCursor) {
4508            drawCursor(canvas, cursorOffsetVertical);
4509            // Rely on the drawable entirely, do not draw the cursor line.
4510            // Has to be done after the IMM related code above which relies on the highlight.
4511            highlight = null;
4512        }
4513
4514        layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4515
4516        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
4517            canvas.translate((int) mMarquee.getGhostOffset(), 0.0f);
4518            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4519        }
4520
4521        /*  Comment out until we decide what to do about animations
4522        if (currentTransformation != null) {
4523            mTextPaint.setLinearTextOn(isLinearTextOn);
4524        }
4525        */
4526
4527        canvas.restore();
4528    }
4529
4530    private void updateCursorsPositions() {
4531        if (mCursorDrawableRes == 0) {
4532            mCursorCount = 0;
4533            return;
4534        }
4535
4536        final int offset = getSelectionStart();
4537        final int line = mLayout.getLineForOffset(offset);
4538        final int top = mLayout.getLineTop(line);
4539        final int bottom = mLayout.getLineTop(line + 1);
4540
4541        mCursorCount = mLayout.isLevelBoundary(offset) ? 2 : 1;
4542
4543        int middle = bottom;
4544        if (mCursorCount == 2) {
4545            // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)}
4546            middle = (top + bottom) >> 1;
4547        }
4548
4549        updateCursorPosition(0, top, middle, mLayout.getPrimaryHorizontal(offset));
4550
4551        if (mCursorCount == 2) {
4552            updateCursorPosition(1, middle, bottom, mLayout.getSecondaryHorizontal(offset));
4553        }
4554    }
4555
4556    private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) {
4557        if (mCursorDrawable[cursorIndex] == null)
4558            mCursorDrawable[cursorIndex] = mContext.getResources().getDrawable(mCursorDrawableRes);
4559
4560        if (mTempRect == null) mTempRect = new Rect();
4561
4562        mCursorDrawable[cursorIndex].getPadding(mTempRect);
4563        final int width = mCursorDrawable[cursorIndex].getIntrinsicWidth();
4564        horizontal = Math.max(0.5f, horizontal - 0.5f);
4565        final int left = (int) (horizontal) - mTempRect.left;
4566        mCursorDrawable[cursorIndex].setBounds(left, top - mTempRect.top, left + width,
4567                bottom + mTempRect.bottom);
4568    }
4569
4570    private void drawCursor(Canvas canvas, int cursorOffsetVertical) {
4571        final boolean translate = cursorOffsetVertical != 0;
4572        if (translate) canvas.translate(0, cursorOffsetVertical);
4573        for (int i = 0; i < mCursorCount; i++) {
4574            mCursorDrawable[i].draw(canvas);
4575        }
4576        if (translate) canvas.translate(0, -cursorOffsetVertical);
4577    }
4578
4579    @Override
4580    public void getFocusedRect(Rect r) {
4581        if (mLayout == null) {
4582            super.getFocusedRect(r);
4583            return;
4584        }
4585
4586        int sel = getSelectionEnd();
4587        if (sel < 0) {
4588            super.getFocusedRect(r);
4589            return;
4590        }
4591
4592        int line = mLayout.getLineForOffset(sel);
4593        r.top = mLayout.getLineTop(line);
4594        r.bottom = mLayout.getLineBottom(line);
4595
4596        r.left = (int) mLayout.getPrimaryHorizontal(sel);
4597        r.right = r.left + 1;
4598
4599        // Adjust for padding and gravity.
4600        int paddingLeft = getCompoundPaddingLeft();
4601        int paddingTop = getExtendedPaddingTop();
4602        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4603            paddingTop += getVerticalOffset(false);
4604        }
4605        r.offset(paddingLeft, paddingTop);
4606    }
4607
4608    /**
4609     * Return the number of lines of text, or 0 if the internal Layout has not
4610     * been built.
4611     */
4612    public int getLineCount() {
4613        return mLayout != null ? mLayout.getLineCount() : 0;
4614    }
4615
4616    /**
4617     * Return the baseline for the specified line (0...getLineCount() - 1)
4618     * If bounds is not null, return the top, left, right, bottom extents
4619     * of the specified line in it. If the internal Layout has not been built,
4620     * return 0 and set bounds to (0, 0, 0, 0)
4621     * @param line which line to examine (0..getLineCount() - 1)
4622     * @param bounds Optional. If not null, it returns the extent of the line
4623     * @return the Y-coordinate of the baseline
4624     */
4625    public int getLineBounds(int line, Rect bounds) {
4626        if (mLayout == null) {
4627            if (bounds != null) {
4628                bounds.set(0, 0, 0, 0);
4629            }
4630            return 0;
4631        }
4632        else {
4633            int baseline = mLayout.getLineBounds(line, bounds);
4634
4635            int voffset = getExtendedPaddingTop();
4636            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4637                voffset += getVerticalOffset(true);
4638            }
4639            if (bounds != null) {
4640                bounds.offset(getCompoundPaddingLeft(), voffset);
4641            }
4642            return baseline + voffset;
4643        }
4644    }
4645
4646    @Override
4647    public int getBaseline() {
4648        if (mLayout == null) {
4649            return super.getBaseline();
4650        }
4651
4652        int voffset = 0;
4653        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4654            voffset = getVerticalOffset(true);
4655        }
4656
4657        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
4658    }
4659
4660    @Override
4661    public boolean onKeyDown(int keyCode, KeyEvent event) {
4662        int which = doKeyDown(keyCode, event, null);
4663        if (which == 0) {
4664            // Go through default dispatching.
4665            return super.onKeyDown(keyCode, event);
4666        }
4667
4668        return true;
4669    }
4670
4671    @Override
4672    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
4673        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
4674
4675        int which = doKeyDown(keyCode, down, event);
4676        if (which == 0) {
4677            // Go through default dispatching.
4678            return super.onKeyMultiple(keyCode, repeatCount, event);
4679        }
4680        if (which == -1) {
4681            // Consumed the whole thing.
4682            return true;
4683        }
4684
4685        repeatCount--;
4686
4687        // We are going to dispatch the remaining events to either the input
4688        // or movement method.  To do this, we will just send a repeated stream
4689        // of down and up events until we have done the complete repeatCount.
4690        // It would be nice if those interfaces had an onKeyMultiple() method,
4691        // but adding that is a more complicated change.
4692        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
4693        if (which == 1) {
4694            mInput.onKeyUp(this, (Editable)mText, keyCode, up);
4695            while (--repeatCount > 0) {
4696                mInput.onKeyDown(this, (Editable)mText, keyCode, down);
4697                mInput.onKeyUp(this, (Editable)mText, keyCode, up);
4698            }
4699            hideErrorIfUnchanged();
4700
4701        } else if (which == 2) {
4702            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4703            while (--repeatCount > 0) {
4704                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
4705                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4706            }
4707        }
4708
4709        return true;
4710    }
4711
4712    /**
4713     * Returns true if pressing ENTER in this field advances focus instead
4714     * of inserting the character.  This is true mostly in single-line fields,
4715     * but also in mail addresses and subjects which will display on multiple
4716     * lines but where it doesn't make sense to insert newlines.
4717     */
4718    private boolean shouldAdvanceFocusOnEnter() {
4719        if (mInput == null) {
4720            return false;
4721        }
4722
4723        if (mSingleLine) {
4724            return true;
4725        }
4726
4727        if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
4728            int variation = mInputType & EditorInfo.TYPE_MASK_VARIATION;
4729            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
4730                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
4731                return true;
4732            }
4733        }
4734
4735        return false;
4736    }
4737
4738    /**
4739     * Returns true if pressing TAB in this field advances focus instead
4740     * of inserting the character.  Insert tabs only in multi-line editors.
4741     */
4742    private boolean shouldAdvanceFocusOnTab() {
4743        if (mInput != null && !mSingleLine) {
4744            if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
4745                int variation = mInputType & EditorInfo.TYPE_MASK_VARIATION;
4746                if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
4747                        || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
4748                    return false;
4749                }
4750            }
4751        }
4752        return true;
4753    }
4754
4755    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
4756        if (!isEnabled()) {
4757            return 0;
4758        }
4759
4760        switch (keyCode) {
4761            case KeyEvent.KEYCODE_ENTER:
4762                mEnterKeyIsDown = true;
4763                if (event.hasNoModifiers()) {
4764                    // When mInputContentType is set, we know that we are
4765                    // running in a "modern" cupcake environment, so don't need
4766                    // to worry about the application trying to capture
4767                    // enter key events.
4768                    if (mInputContentType != null) {
4769                        // If there is an action listener, given them a
4770                        // chance to consume the event.
4771                        if (mInputContentType.onEditorActionListener != null &&
4772                                mInputContentType.onEditorActionListener.onEditorAction(
4773                                this, EditorInfo.IME_NULL, event)) {
4774                            mInputContentType.enterDown = true;
4775                            // We are consuming the enter key for them.
4776                            return -1;
4777                        }
4778                    }
4779
4780                    // If our editor should move focus when enter is pressed, or
4781                    // this is a generated event from an IME action button, then
4782                    // don't let it be inserted into the text.
4783                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
4784                            || shouldAdvanceFocusOnEnter()) {
4785                        if (mOnClickListener != null) {
4786                            return 0;
4787                        }
4788                        return -1;
4789                    }
4790                }
4791                break;
4792
4793            case KeyEvent.KEYCODE_DPAD_CENTER:
4794                mDPadCenterIsDown = true;
4795                if (event.hasNoModifiers()) {
4796                    if (shouldAdvanceFocusOnEnter()) {
4797                        return 0;
4798                    }
4799                }
4800                break;
4801
4802            case KeyEvent.KEYCODE_TAB:
4803                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
4804                    if (shouldAdvanceFocusOnTab()) {
4805                        return 0;
4806                    }
4807                }
4808                break;
4809
4810                // Has to be done on key down (and not on key up) to correctly be intercepted.
4811            case KeyEvent.KEYCODE_BACK:
4812                if (mSelectionActionMode != null) {
4813                    stopSelectionActionMode();
4814                    return -1;
4815                }
4816                break;
4817        }
4818
4819        if (mInput != null) {
4820            resetErrorChangedFlag();
4821
4822            boolean doDown = true;
4823            if (otherEvent != null) {
4824                try {
4825                    beginBatchEdit();
4826                    final boolean handled = mInput.onKeyOther(this, (Editable) mText, otherEvent);
4827                    hideErrorIfUnchanged();
4828                    doDown = false;
4829                    if (handled) {
4830                        return -1;
4831                    }
4832                } catch (AbstractMethodError e) {
4833                    // onKeyOther was added after 1.0, so if it isn't
4834                    // implemented we need to try to dispatch as a regular down.
4835                } finally {
4836                    endBatchEdit();
4837                }
4838            }
4839
4840            if (doDown) {
4841                beginBatchEdit();
4842                final boolean handled = mInput.onKeyDown(this, (Editable) mText, keyCode, event);
4843                endBatchEdit();
4844                hideErrorIfUnchanged();
4845                if (handled) return 1;
4846            }
4847        }
4848
4849        // bug 650865: sometimes we get a key event before a layout.
4850        // don't try to move around if we don't know the layout.
4851
4852        if (mMovement != null && mLayout != null) {
4853            boolean doDown = true;
4854            if (otherEvent != null) {
4855                try {
4856                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
4857                            otherEvent);
4858                    doDown = false;
4859                    if (handled) {
4860                        return -1;
4861                    }
4862                } catch (AbstractMethodError e) {
4863                    // onKeyOther was added after 1.0, so if it isn't
4864                    // implemented we need to try to dispatch as a regular down.
4865                }
4866            }
4867            if (doDown) {
4868                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
4869                    return 2;
4870            }
4871        }
4872
4873        return 0;
4874    }
4875
4876    /**
4877     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
4878     * can be recorded.
4879     * @hide
4880     */
4881    public void resetErrorChangedFlag() {
4882        /*
4883         * Keep track of what the error was before doing the input
4884         * so that if an input filter changed the error, we leave
4885         * that error showing.  Otherwise, we take down whatever
4886         * error was showing when the user types something.
4887         */
4888        mErrorWasChanged = false;
4889    }
4890
4891    /**
4892     * @hide
4893     */
4894    public void hideErrorIfUnchanged() {
4895        if (mError != null && !mErrorWasChanged) {
4896            setError(null, null);
4897        }
4898    }
4899
4900    @Override
4901    public boolean onKeyUp(int keyCode, KeyEvent event) {
4902        if (!isEnabled()) {
4903            return super.onKeyUp(keyCode, event);
4904        }
4905
4906        switch (keyCode) {
4907            case KeyEvent.KEYCODE_DPAD_CENTER:
4908                mDPadCenterIsDown = false;
4909                if (event.hasNoModifiers()) {
4910                    /*
4911                     * If there is a click listener, just call through to
4912                     * super, which will invoke it.
4913                     *
4914                     * If there isn't a click listener, try to show the soft
4915                     * input method.  (It will also
4916                     * call performClick(), but that won't do anything in
4917                     * this case.)
4918                     */
4919                    if (mOnClickListener == null) {
4920                        if (mMovement != null && mText instanceof Editable
4921                                && mLayout != null && onCheckIsTextEditor()) {
4922                            InputMethodManager imm = InputMethodManager.peekInstance();
4923                            if (imm != null) imm.showSoftInput(this, 0);
4924                        }
4925                    }
4926                }
4927                return super.onKeyUp(keyCode, event);
4928
4929            case KeyEvent.KEYCODE_ENTER:
4930                mEnterKeyIsDown = false;
4931                if (event.hasNoModifiers()) {
4932                    if (mInputContentType != null
4933                            && mInputContentType.onEditorActionListener != null
4934                            && mInputContentType.enterDown) {
4935                        mInputContentType.enterDown = false;
4936                        if (mInputContentType.onEditorActionListener.onEditorAction(
4937                                this, EditorInfo.IME_NULL, event)) {
4938                            return true;
4939                        }
4940                    }
4941
4942                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
4943                            || shouldAdvanceFocusOnEnter()) {
4944                        /*
4945                         * If there is a click listener, just call through to
4946                         * super, which will invoke it.
4947                         *
4948                         * If there isn't a click listener, try to advance focus,
4949                         * but still call through to super, which will reset the
4950                         * pressed state and longpress state.  (It will also
4951                         * call performClick(), but that won't do anything in
4952                         * this case.)
4953                         */
4954                        if (mOnClickListener == null) {
4955                            View v = focusSearch(FOCUS_DOWN);
4956
4957                            if (v != null) {
4958                                if (!v.requestFocus(FOCUS_DOWN)) {
4959                                    throw new IllegalStateException(
4960                                            "focus search returned a view " +
4961                                            "that wasn't able to take focus!");
4962                                }
4963
4964                                /*
4965                                 * Return true because we handled the key; super
4966                                 * will return false because there was no click
4967                                 * listener.
4968                                 */
4969                                super.onKeyUp(keyCode, event);
4970                                return true;
4971                            } else if ((event.getFlags()
4972                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
4973                                // No target for next focus, but make sure the IME
4974                                // if this came from it.
4975                                InputMethodManager imm = InputMethodManager.peekInstance();
4976                                if (imm != null && imm.isActive(this)) {
4977                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4978                                }
4979                            }
4980                        }
4981                    }
4982                    return super.onKeyUp(keyCode, event);
4983                }
4984                break;
4985        }
4986
4987        if (mInput != null)
4988            if (mInput.onKeyUp(this, (Editable) mText, keyCode, event))
4989                return true;
4990
4991        if (mMovement != null && mLayout != null)
4992            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
4993                return true;
4994
4995        return super.onKeyUp(keyCode, event);
4996    }
4997
4998    @Override public boolean onCheckIsTextEditor() {
4999        return mInputType != EditorInfo.TYPE_NULL;
5000    }
5001
5002    @Override public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
5003        if (onCheckIsTextEditor() && isEnabled()) {
5004            if (mInputMethodState == null) {
5005                mInputMethodState = new InputMethodState();
5006            }
5007            outAttrs.inputType = mInputType;
5008            if (mInputContentType != null) {
5009                outAttrs.imeOptions = mInputContentType.imeOptions;
5010                outAttrs.privateImeOptions = mInputContentType.privateImeOptions;
5011                outAttrs.actionLabel = mInputContentType.imeActionLabel;
5012                outAttrs.actionId = mInputContentType.imeActionId;
5013                outAttrs.extras = mInputContentType.extras;
5014            } else {
5015                outAttrs.imeOptions = EditorInfo.IME_NULL;
5016            }
5017            if (focusSearch(FOCUS_DOWN) != null) {
5018                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
5019            }
5020            if (focusSearch(FOCUS_UP) != null) {
5021                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
5022            }
5023            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
5024                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
5025                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
5026                    // An action has not been set, but the enter key will move to
5027                    // the next focus, so set the action to that.
5028                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
5029                } else {
5030                    // An action has not been set, and there is no focus to move
5031                    // to, so let's just supply a "done" action.
5032                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
5033                }
5034                if (!shouldAdvanceFocusOnEnter()) {
5035                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5036                }
5037            }
5038            if (isMultilineInputType(outAttrs.inputType)) {
5039                // Multi-line text editors should always show an enter key.
5040                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5041            }
5042            outAttrs.hintText = mHint;
5043            if (mText instanceof Editable) {
5044                InputConnection ic = new EditableInputConnection(this);
5045                outAttrs.initialSelStart = getSelectionStart();
5046                outAttrs.initialSelEnd = getSelectionEnd();
5047                outAttrs.initialCapsMode = ic.getCursorCapsMode(mInputType);
5048                return ic;
5049            }
5050        }
5051        return null;
5052    }
5053
5054    /**
5055     * If this TextView contains editable content, extract a portion of it
5056     * based on the information in <var>request</var> in to <var>outText</var>.
5057     * @return Returns true if the text was successfully extracted, else false.
5058     */
5059    public boolean extractText(ExtractedTextRequest request,
5060            ExtractedText outText) {
5061        return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN,
5062                EXTRACT_UNKNOWN, outText);
5063    }
5064
5065    static final int EXTRACT_NOTHING = -2;
5066    static final int EXTRACT_UNKNOWN = -1;
5067
5068    boolean extractTextInternal(ExtractedTextRequest request,
5069            int partialStartOffset, int partialEndOffset, int delta,
5070            ExtractedText outText) {
5071        final CharSequence content = mText;
5072        if (content != null) {
5073            if (partialStartOffset != EXTRACT_NOTHING) {
5074                final int N = content.length();
5075                if (partialStartOffset < 0) {
5076                    outText.partialStartOffset = outText.partialEndOffset = -1;
5077                    partialStartOffset = 0;
5078                    partialEndOffset = N;
5079                } else {
5080                    // Now use the delta to determine the actual amount of text
5081                    // we need.
5082                    partialEndOffset += delta;
5083                    // Adjust offsets to ensure we contain full spans.
5084                    if (content instanceof Spanned) {
5085                        Spanned spanned = (Spanned)content;
5086                        Object[] spans = spanned.getSpans(partialStartOffset,
5087                                partialEndOffset, ParcelableSpan.class);
5088                        int i = spans.length;
5089                        while (i > 0) {
5090                            i--;
5091                            int j = spanned.getSpanStart(spans[i]);
5092                            if (j < partialStartOffset) partialStartOffset = j;
5093                            j = spanned.getSpanEnd(spans[i]);
5094                            if (j > partialEndOffset) partialEndOffset = j;
5095                        }
5096                    }
5097                    outText.partialStartOffset = partialStartOffset;
5098                    outText.partialEndOffset = partialEndOffset - delta;
5099
5100                    if (partialStartOffset > N) {
5101                        partialStartOffset = N;
5102                    } else if (partialStartOffset < 0) {
5103                        partialStartOffset = 0;
5104                    }
5105                    if (partialEndOffset > N) {
5106                        partialEndOffset = N;
5107                    } else if (partialEndOffset < 0) {
5108                        partialEndOffset = 0;
5109                    }
5110                }
5111                if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) {
5112                    outText.text = content.subSequence(partialStartOffset,
5113                            partialEndOffset);
5114                } else {
5115                    outText.text = TextUtils.substring(content, partialStartOffset,
5116                            partialEndOffset);
5117                }
5118            } else {
5119                outText.partialStartOffset = 0;
5120                outText.partialEndOffset = 0;
5121                outText.text = "";
5122            }
5123            outText.flags = 0;
5124            if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) {
5125                outText.flags |= ExtractedText.FLAG_SELECTING;
5126            }
5127            if (mSingleLine) {
5128                outText.flags |= ExtractedText.FLAG_SINGLE_LINE;
5129            }
5130            outText.startOffset = 0;
5131            outText.selectionStart = getSelectionStart();
5132            outText.selectionEnd = getSelectionEnd();
5133            return true;
5134        }
5135        return false;
5136    }
5137
5138    boolean reportExtractedText() {
5139        final InputMethodState ims = mInputMethodState;
5140        if (ims != null) {
5141            final boolean contentChanged = ims.mContentChanged;
5142            if (contentChanged || ims.mSelectionModeChanged) {
5143                ims.mContentChanged = false;
5144                ims.mSelectionModeChanged = false;
5145                final ExtractedTextRequest req = mInputMethodState.mExtracting;
5146                if (req != null) {
5147                    InputMethodManager imm = InputMethodManager.peekInstance();
5148                    if (imm != null) {
5149                        if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Retrieving extracted start="
5150                                + ims.mChangedStart + " end=" + ims.mChangedEnd
5151                                + " delta=" + ims.mChangedDelta);
5152                        if (ims.mChangedStart < 0 && !contentChanged) {
5153                            ims.mChangedStart = EXTRACT_NOTHING;
5154                        }
5155                        if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd,
5156                                ims.mChangedDelta, ims.mTmpExtracted)) {
5157                            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Reporting extracted start="
5158                                    + ims.mTmpExtracted.partialStartOffset
5159                                    + " end=" + ims.mTmpExtracted.partialEndOffset
5160                                    + ": " + ims.mTmpExtracted.text);
5161                            imm.updateExtractedText(this, req.token,
5162                                    mInputMethodState.mTmpExtracted);
5163                            ims.mChangedStart = EXTRACT_UNKNOWN;
5164                            ims.mChangedEnd = EXTRACT_UNKNOWN;
5165                            ims.mChangedDelta = 0;
5166                            ims.mContentChanged = false;
5167                            return true;
5168                        }
5169                    }
5170                }
5171            }
5172        }
5173        return false;
5174    }
5175
5176    /**
5177     * This is used to remove all style-impacting spans from text before new
5178     * extracted text is being replaced into it, so that we don't have any
5179     * lingering spans applied during the replace.
5180     */
5181    static void removeParcelableSpans(Spannable spannable, int start, int end) {
5182        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
5183        int i = spans.length;
5184        while (i > 0) {
5185            i--;
5186            spannable.removeSpan(spans[i]);
5187        }
5188    }
5189
5190    /**
5191     * Apply to this text view the given extracted text, as previously
5192     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
5193     */
5194    public void setExtractedText(ExtractedText text) {
5195        Editable content = getEditableText();
5196        if (text.text != null) {
5197            if (content == null) {
5198                setText(text.text, TextView.BufferType.EDITABLE);
5199            } else if (text.partialStartOffset < 0) {
5200                removeParcelableSpans(content, 0, content.length());
5201                content.replace(0, content.length(), text.text);
5202            } else {
5203                final int N = content.length();
5204                int start = text.partialStartOffset;
5205                if (start > N) start = N;
5206                int end = text.partialEndOffset;
5207                if (end > N) end = N;
5208                removeParcelableSpans(content, start, end);
5209                content.replace(start, end, text.text);
5210            }
5211        }
5212
5213        // Now set the selection position...  make sure it is in range, to
5214        // avoid crashes.  If this is a partial update, it is possible that
5215        // the underlying text may have changed, causing us problems here.
5216        // Also we just don't want to trust clients to do the right thing.
5217        Spannable sp = (Spannable)getText();
5218        final int N = sp.length();
5219        int start = text.selectionStart;
5220        if (start < 0) start = 0;
5221        else if (start > N) start = N;
5222        int end = text.selectionEnd;
5223        if (end < 0) end = 0;
5224        else if (end > N) end = N;
5225        Selection.setSelection(sp, start, end);
5226
5227        // Finally, update the selection mode.
5228        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
5229            MetaKeyKeyListener.startSelecting(this, sp);
5230        } else {
5231            MetaKeyKeyListener.stopSelecting(this, sp);
5232        }
5233    }
5234
5235    /**
5236     * @hide
5237     */
5238    public void setExtracting(ExtractedTextRequest req) {
5239        if (mInputMethodState != null) {
5240            mInputMethodState.mExtracting = req;
5241        }
5242        // This stops a possible text selection mode. Maybe not intended.
5243        hideControllers();
5244    }
5245
5246    /**
5247     * Called by the framework in response to a text completion from
5248     * the current input method, provided by it calling
5249     * {@link InputConnection#commitCompletion
5250     * InputConnection.commitCompletion()}.  The default implementation does
5251     * nothing; text views that are supporting auto-completion should override
5252     * this to do their desired behavior.
5253     *
5254     * @param text The auto complete text the user has selected.
5255     */
5256    public void onCommitCompletion(CompletionInfo text) {
5257        // intentionally empty
5258    }
5259
5260    /**
5261     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
5262     * a dictionnary) from the current input method, provided by it calling
5263     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
5264     * implementation flashes the background of the corrected word to provide feedback to the user.
5265     *
5266     * @param info The auto correct info about the text that was corrected.
5267     */
5268    public void onCommitCorrection(CorrectionInfo info) {
5269        if (mCorrectionHighlighter == null) {
5270            mCorrectionHighlighter = new CorrectionHighlighter();
5271        } else {
5272            mCorrectionHighlighter.invalidate(false);
5273        }
5274
5275        mCorrectionHighlighter.highlight(info);
5276    }
5277
5278    private class CorrectionHighlighter {
5279        private final Path mPath = new Path();
5280        private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
5281        private int mStart, mEnd;
5282        private long mFadingStartTime;
5283        private final static int FADE_OUT_DURATION = 400;
5284
5285        public CorrectionHighlighter() {
5286            mPaint.setCompatibilityScaling(getResources().getCompatibilityInfo().applicationScale);
5287            mPaint.setStyle(Paint.Style.FILL);
5288        }
5289
5290        public void highlight(CorrectionInfo info) {
5291            mStart = info.getOffset();
5292            mEnd = mStart + info.getNewText().length();
5293            mFadingStartTime = SystemClock.uptimeMillis();
5294
5295            if (mStart < 0 || mEnd < 0) {
5296                stopAnimation();
5297            }
5298        }
5299
5300        public void draw(Canvas canvas, int cursorOffsetVertical) {
5301            if (updatePath() && updatePaint()) {
5302                if (cursorOffsetVertical != 0) {
5303                    canvas.translate(0, cursorOffsetVertical);
5304                }
5305
5306                canvas.drawPath(mPath, mPaint);
5307
5308                if (cursorOffsetVertical != 0) {
5309                    canvas.translate(0, -cursorOffsetVertical);
5310                }
5311                invalidate(true);
5312            } else {
5313                stopAnimation();
5314                invalidate(false);
5315            }
5316        }
5317
5318        private boolean updatePaint() {
5319            final long duration = SystemClock.uptimeMillis() - mFadingStartTime;
5320            if (duration > FADE_OUT_DURATION) return false;
5321
5322            final float coef = 1.0f - (float) duration / FADE_OUT_DURATION;
5323            final int highlightColorAlpha = Color.alpha(mHighlightColor);
5324            final int color = (mHighlightColor & 0x00FFFFFF) +
5325                    ((int) (highlightColorAlpha * coef) << 24);
5326            mPaint.setColor(color);
5327            return true;
5328        }
5329
5330        private boolean updatePath() {
5331            final Layout layout = TextView.this.mLayout;
5332            if (layout == null) return false;
5333
5334            // Update in case text is edited while the animation is run
5335            final int length = mText.length();
5336            int start = Math.min(length, mStart);
5337            int end = Math.min(length, mEnd);
5338
5339            mPath.reset();
5340            TextView.this.mLayout.getSelectionPath(start, end, mPath);
5341            return true;
5342        }
5343
5344        private void invalidate(boolean delayed) {
5345            if (TextView.this.mLayout == null) return;
5346
5347            synchronized (sTempRect) {
5348                mPath.computeBounds(sTempRect, false);
5349
5350                int left = getCompoundPaddingLeft();
5351                int top = getExtendedPaddingTop() + getVerticalOffset(true);
5352
5353                if (delayed) {
5354                    TextView.this.postInvalidateDelayed(16, // 60 Hz update
5355                            left + (int) sTempRect.left, top + (int) sTempRect.top,
5356                            left + (int) sTempRect.right, top + (int) sTempRect.bottom);
5357                } else {
5358                    TextView.this.postInvalidate((int) sTempRect.left, (int) sTempRect.top,
5359                            (int) sTempRect.right, (int) sTempRect.bottom);
5360                }
5361            }
5362        }
5363
5364        private void stopAnimation() {
5365            TextView.this.mCorrectionHighlighter = null;
5366        }
5367    }
5368
5369    public void beginBatchEdit() {
5370        mInBatchEditControllers = true;
5371        final InputMethodState ims = mInputMethodState;
5372        if (ims != null) {
5373            int nesting = ++ims.mBatchEditNesting;
5374            if (nesting == 1) {
5375                ims.mCursorChanged = false;
5376                ims.mChangedDelta = 0;
5377                if (ims.mContentChanged) {
5378                    // We already have a pending change from somewhere else,
5379                    // so turn this into a full update.
5380                    ims.mChangedStart = 0;
5381                    ims.mChangedEnd = mText.length();
5382                } else {
5383                    ims.mChangedStart = EXTRACT_UNKNOWN;
5384                    ims.mChangedEnd = EXTRACT_UNKNOWN;
5385                    ims.mContentChanged = false;
5386                }
5387                onBeginBatchEdit();
5388            }
5389        }
5390    }
5391
5392    public void endBatchEdit() {
5393        mInBatchEditControllers = false;
5394        final InputMethodState ims = mInputMethodState;
5395        if (ims != null) {
5396            int nesting = --ims.mBatchEditNesting;
5397            if (nesting == 0) {
5398                finishBatchEdit(ims);
5399            }
5400        }
5401    }
5402
5403    void ensureEndedBatchEdit() {
5404        final InputMethodState ims = mInputMethodState;
5405        if (ims != null && ims.mBatchEditNesting != 0) {
5406            ims.mBatchEditNesting = 0;
5407            finishBatchEdit(ims);
5408        }
5409    }
5410
5411    void finishBatchEdit(final InputMethodState ims) {
5412        onEndBatchEdit();
5413
5414        if (ims.mContentChanged || ims.mSelectionModeChanged) {
5415            updateAfterEdit();
5416            reportExtractedText();
5417        } else if (ims.mCursorChanged) {
5418            // Cheezy way to get us to report the current cursor location.
5419            invalidateCursor();
5420        }
5421    }
5422
5423    void updateAfterEdit() {
5424        invalidate();
5425        int curs = getSelectionStart();
5426
5427        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5428            registerForPreDraw();
5429        }
5430
5431        if (curs >= 0) {
5432            mHighlightPathBogus = true;
5433            makeBlink();
5434        }
5435
5436        checkForResize();
5437    }
5438
5439    /**
5440     * Called by the framework in response to a request to begin a batch
5441     * of edit operations through a call to link {@link #beginBatchEdit()}.
5442     */
5443    public void onBeginBatchEdit() {
5444        // intentionally empty
5445    }
5446
5447    /**
5448     * Called by the framework in response to a request to end a batch
5449     * of edit operations through a call to link {@link #endBatchEdit}.
5450     */
5451    public void onEndBatchEdit() {
5452        // intentionally empty
5453    }
5454
5455    /**
5456     * Called by the framework in response to a private command from the
5457     * current method, provided by it calling
5458     * {@link InputConnection#performPrivateCommand
5459     * InputConnection.performPrivateCommand()}.
5460     *
5461     * @param action The action name of the command.
5462     * @param data Any additional data for the command.  This may be null.
5463     * @return Return true if you handled the command, else false.
5464     */
5465    public boolean onPrivateIMECommand(String action, Bundle data) {
5466        return false;
5467    }
5468
5469    private void nullLayouts() {
5470        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
5471            mSavedLayout = (BoringLayout) mLayout;
5472        }
5473        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
5474            mSavedHintLayout = (BoringLayout) mHintLayout;
5475        }
5476
5477        mLayout = mHintLayout = null;
5478
5479        // Since it depends on the value of mLayout
5480        prepareCursorControllers();
5481    }
5482
5483    /**
5484     * Make a new Layout based on the already-measured size of the view,
5485     * on the assumption that it was measured correctly at some point.
5486     */
5487    private void assumeLayout() {
5488        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5489
5490        if (width < 1) {
5491            width = 0;
5492        }
5493
5494        int physicalWidth = width;
5495
5496        if (mHorizontallyScrolling) {
5497            width = VERY_WIDE;
5498        }
5499
5500        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
5501                      physicalWidth, false);
5502    }
5503
5504    /**
5505     * The width passed in is now the desired layout width,
5506     * not the full view width with padding.
5507     * {@hide}
5508     */
5509    protected void makeNewLayout(int w, int hintWidth,
5510                                 BoringLayout.Metrics boring,
5511                                 BoringLayout.Metrics hintBoring,
5512                                 int ellipsisWidth, boolean bringIntoView) {
5513        stopMarquee();
5514
5515        mHighlightPathBogus = true;
5516
5517        if (w < 0) {
5518            w = 0;
5519        }
5520        if (hintWidth < 0) {
5521            hintWidth = 0;
5522        }
5523
5524        Layout.Alignment alignment;
5525        switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
5526            case Gravity.CENTER_HORIZONTAL:
5527                alignment = Layout.Alignment.ALIGN_CENTER;
5528                break;
5529
5530            case Gravity.RIGHT:
5531                // Note, Layout resolves ALIGN_OPPOSITE to left or
5532                // right based on the paragraph direction.
5533                alignment = Layout.Alignment.ALIGN_OPPOSITE;
5534                break;
5535
5536            default:
5537                alignment = Layout.Alignment.ALIGN_NORMAL;
5538        }
5539
5540        boolean shouldEllipsize = mEllipsize != null && mInput == null;
5541
5542        if (mText instanceof Spannable) {
5543            mLayout = new DynamicLayout(mText, mTransformed, mTextPaint, w,
5544                    alignment, mSpacingMult,
5545                    mSpacingAdd, mIncludePad, mInput == null ? mEllipsize : null,
5546                    ellipsisWidth);
5547        } else {
5548            if (boring == UNKNOWN_BORING) {
5549                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mBoring);
5550                if (boring != null) {
5551                    mBoring = boring;
5552                }
5553            }
5554
5555            if (boring != null) {
5556                if (boring.width <= w &&
5557                    (mEllipsize == null || boring.width <= ellipsisWidth)) {
5558                    if (mSavedLayout != null) {
5559                        mLayout = mSavedLayout.
5560                                replaceOrMake(mTransformed, mTextPaint,
5561                                w, alignment, mSpacingMult, mSpacingAdd,
5562                                boring, mIncludePad);
5563                    } else {
5564                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
5565                                w, alignment, mSpacingMult, mSpacingAdd,
5566                                boring, mIncludePad);
5567                    }
5568
5569                    mSavedLayout = (BoringLayout) mLayout;
5570                } else if (shouldEllipsize && boring.width <= w) {
5571                    if (mSavedLayout != null) {
5572                        mLayout = mSavedLayout.
5573                                replaceOrMake(mTransformed, mTextPaint,
5574                                w, alignment, mSpacingMult, mSpacingAdd,
5575                                boring, mIncludePad, mEllipsize,
5576                                ellipsisWidth);
5577                    } else {
5578                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
5579                                w, alignment, mSpacingMult, mSpacingAdd,
5580                                boring, mIncludePad, mEllipsize,
5581                                ellipsisWidth);
5582                    }
5583                } else if (shouldEllipsize) {
5584                    mLayout = new StaticLayout(mTransformed,
5585                                0, mTransformed.length(),
5586                                mTextPaint, w, alignment, mSpacingMult,
5587                                mSpacingAdd, mIncludePad, mEllipsize,
5588                                ellipsisWidth);
5589                } else {
5590                    mLayout = new StaticLayout(mTransformed, mTextPaint,
5591                            w, alignment, mSpacingMult, mSpacingAdd,
5592                            mIncludePad);
5593                }
5594            } else if (shouldEllipsize) {
5595                mLayout = new StaticLayout(mTransformed,
5596                            0, mTransformed.length(),
5597                            mTextPaint, w, alignment, mSpacingMult,
5598                            mSpacingAdd, mIncludePad, mEllipsize,
5599                            ellipsisWidth);
5600            } else {
5601                mLayout = new StaticLayout(mTransformed, mTextPaint,
5602                        w, alignment, mSpacingMult, mSpacingAdd,
5603                        mIncludePad);
5604            }
5605        }
5606
5607        shouldEllipsize = mEllipsize != null;
5608        mHintLayout = null;
5609
5610        if (mHint != null) {
5611            if (shouldEllipsize) hintWidth = w;
5612
5613            if (hintBoring == UNKNOWN_BORING) {
5614                hintBoring = BoringLayout.isBoring(mHint, mTextPaint,
5615                                                   mHintBoring);
5616                if (hintBoring != null) {
5617                    mHintBoring = hintBoring;
5618                }
5619            }
5620
5621            if (hintBoring != null) {
5622                if (hintBoring.width <= hintWidth &&
5623                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
5624                    if (mSavedHintLayout != null) {
5625                        mHintLayout = mSavedHintLayout.
5626                                replaceOrMake(mHint, mTextPaint,
5627                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5628                                hintBoring, mIncludePad);
5629                    } else {
5630                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5631                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5632                                hintBoring, mIncludePad);
5633                    }
5634
5635                    mSavedHintLayout = (BoringLayout) mHintLayout;
5636                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
5637                    if (mSavedHintLayout != null) {
5638                        mHintLayout = mSavedHintLayout.
5639                                replaceOrMake(mHint, mTextPaint,
5640                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5641                                hintBoring, mIncludePad, mEllipsize,
5642                                ellipsisWidth);
5643                    } else {
5644                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5645                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5646                                hintBoring, mIncludePad, mEllipsize,
5647                                ellipsisWidth);
5648                    }
5649                } else if (shouldEllipsize) {
5650                    mHintLayout = new StaticLayout(mHint,
5651                                0, mHint.length(),
5652                                mTextPaint, hintWidth, alignment, mSpacingMult,
5653                                mSpacingAdd, mIncludePad, mEllipsize,
5654                                ellipsisWidth);
5655                } else {
5656                    mHintLayout = new StaticLayout(mHint, mTextPaint,
5657                            hintWidth, alignment, mSpacingMult, mSpacingAdd,
5658                            mIncludePad);
5659                }
5660            } else if (shouldEllipsize) {
5661                mHintLayout = new StaticLayout(mHint,
5662                            0, mHint.length(),
5663                            mTextPaint, hintWidth, alignment, mSpacingMult,
5664                            mSpacingAdd, mIncludePad, mEllipsize,
5665                            ellipsisWidth);
5666            } else {
5667                mHintLayout = new StaticLayout(mHint, mTextPaint,
5668                        hintWidth, alignment, mSpacingMult, mSpacingAdd,
5669                        mIncludePad);
5670            }
5671        }
5672
5673        if (bringIntoView) {
5674            registerForPreDraw();
5675        }
5676
5677        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5678            if (!compressText(ellipsisWidth)) {
5679                final int height = mLayoutParams.height;
5680                // If the size of the view does not depend on the size of the text, try to
5681                // start the marquee immediately
5682                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
5683                    startMarquee();
5684                } else {
5685                    // Defer the start of the marquee until we know our width (see setFrame())
5686                    mRestartMarquee = true;
5687                }
5688            }
5689        }
5690
5691        // CursorControllers need a non-null mLayout
5692        prepareCursorControllers();
5693    }
5694
5695    private boolean compressText(float width) {
5696        if (isHardwareAccelerated()) return false;
5697
5698        // Only compress the text if it hasn't been compressed by the previous pass
5699        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
5700                mTextPaint.getTextScaleX() == 1.0f) {
5701            final float textWidth = mLayout.getLineWidth(0);
5702            final float overflow = (textWidth + 1.0f - width) / width;
5703            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
5704                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
5705                post(new Runnable() {
5706                    public void run() {
5707                        requestLayout();
5708                    }
5709                });
5710                return true;
5711            }
5712        }
5713
5714        return false;
5715    }
5716
5717    private static int desired(Layout layout) {
5718        int n = layout.getLineCount();
5719        CharSequence text = layout.getText();
5720        float max = 0;
5721
5722        // if any line was wrapped, we can't use it.
5723        // but it's ok for the last line not to have a newline
5724
5725        for (int i = 0; i < n - 1; i++) {
5726            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
5727                return -1;
5728        }
5729
5730        for (int i = 0; i < n; i++) {
5731            max = Math.max(max, layout.getLineWidth(i));
5732        }
5733
5734        return (int) FloatMath.ceil(max);
5735    }
5736
5737    /**
5738     * Set whether the TextView includes extra top and bottom padding to make
5739     * room for accents that go above the normal ascent and descent.
5740     * The default is true.
5741     *
5742     * @attr ref android.R.styleable#TextView_includeFontPadding
5743     */
5744    public void setIncludeFontPadding(boolean includepad) {
5745        mIncludePad = includepad;
5746
5747        if (mLayout != null) {
5748            nullLayouts();
5749            requestLayout();
5750            invalidate();
5751        }
5752    }
5753
5754    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
5755
5756    @Override
5757    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
5758        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
5759        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
5760        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
5761        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
5762
5763        int width;
5764        int height;
5765
5766        BoringLayout.Metrics boring = UNKNOWN_BORING;
5767        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
5768
5769        int des = -1;
5770        boolean fromexisting = false;
5771
5772        if (widthMode == MeasureSpec.EXACTLY) {
5773            // Parent has told us how big to be. So be it.
5774            width = widthSize;
5775        } else {
5776            if (mLayout != null && mEllipsize == null) {
5777                des = desired(mLayout);
5778            }
5779
5780            if (des < 0) {
5781                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mBoring);
5782                if (boring != null) {
5783                    mBoring = boring;
5784                }
5785            } else {
5786                fromexisting = true;
5787            }
5788
5789            if (boring == null || boring == UNKNOWN_BORING) {
5790                if (des < 0) {
5791                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
5792                }
5793
5794                width = des;
5795            } else {
5796                width = boring.width;
5797            }
5798
5799            final Drawables dr = mDrawables;
5800            if (dr != null) {
5801                width = Math.max(width, dr.mDrawableWidthTop);
5802                width = Math.max(width, dr.mDrawableWidthBottom);
5803            }
5804
5805            if (mHint != null) {
5806                int hintDes = -1;
5807                int hintWidth;
5808
5809                if (mHintLayout != null && mEllipsize == null) {
5810                    hintDes = desired(mHintLayout);
5811                }
5812
5813                if (hintDes < 0) {
5814                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mHintBoring);
5815                    if (hintBoring != null) {
5816                        mHintBoring = hintBoring;
5817                    }
5818                }
5819
5820                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
5821                    if (hintDes < 0) {
5822                        hintDes = (int) FloatMath.ceil(
5823                                Layout.getDesiredWidth(mHint, mTextPaint));
5824                    }
5825
5826                    hintWidth = hintDes;
5827                } else {
5828                    hintWidth = hintBoring.width;
5829                }
5830
5831                if (hintWidth > width) {
5832                    width = hintWidth;
5833                }
5834            }
5835
5836            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
5837
5838            if (mMaxWidthMode == EMS) {
5839                width = Math.min(width, mMaxWidth * getLineHeight());
5840            } else {
5841                width = Math.min(width, mMaxWidth);
5842            }
5843
5844            if (mMinWidthMode == EMS) {
5845                width = Math.max(width, mMinWidth * getLineHeight());
5846            } else {
5847                width = Math.max(width, mMinWidth);
5848            }
5849
5850            // Check against our minimum width
5851            width = Math.max(width, getSuggestedMinimumWidth());
5852
5853            if (widthMode == MeasureSpec.AT_MOST) {
5854                width = Math.min(widthSize, width);
5855            }
5856        }
5857
5858        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
5859        int unpaddedWidth = want;
5860
5861        if (mHorizontallyScrolling) want = VERY_WIDE;
5862
5863        int hintWant = want;
5864        int hintWidth = mHintLayout == null ? hintWant : mHintLayout.getWidth();
5865
5866        if (mLayout == null) {
5867            makeNewLayout(want, hintWant, boring, hintBoring,
5868                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
5869        } else if ((mLayout.getWidth() != want) || (hintWidth != hintWant) ||
5870                   (mLayout.getEllipsizedWidth() !=
5871                        width - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
5872            if (mHint == null && mEllipsize == null &&
5873                    want > mLayout.getWidth() &&
5874                    (mLayout instanceof BoringLayout ||
5875                            (fromexisting && des >= 0 && des <= want))) {
5876                mLayout.increaseWidthTo(want);
5877            } else {
5878                makeNewLayout(want, hintWant, boring, hintBoring,
5879                              width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
5880            }
5881        } else {
5882            // Width has not changed.
5883        }
5884
5885        if (heightMode == MeasureSpec.EXACTLY) {
5886            // Parent has told us how big to be. So be it.
5887            height = heightSize;
5888            mDesiredHeightAtMeasure = -1;
5889        } else {
5890            int desired = getDesiredHeight();
5891
5892            height = desired;
5893            mDesiredHeightAtMeasure = desired;
5894
5895            if (heightMode == MeasureSpec.AT_MOST) {
5896                height = Math.min(desired, heightSize);
5897            }
5898        }
5899
5900        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
5901        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
5902            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
5903        }
5904
5905        /*
5906         * We didn't let makeNewLayout() register to bring the cursor into view,
5907         * so do it here if there is any possibility that it is needed.
5908         */
5909        if (mMovement != null ||
5910            mLayout.getWidth() > unpaddedWidth ||
5911            mLayout.getHeight() > unpaddedHeight) {
5912            registerForPreDraw();
5913        } else {
5914            scrollTo(0, 0);
5915        }
5916
5917        setMeasuredDimension(width, height);
5918    }
5919
5920    private int getDesiredHeight() {
5921        return Math.max(
5922                getDesiredHeight(mLayout, true),
5923                getDesiredHeight(mHintLayout, mEllipsize != null));
5924    }
5925
5926    private int getDesiredHeight(Layout layout, boolean cap) {
5927        if (layout == null) {
5928            return 0;
5929        }
5930
5931        int linecount = layout.getLineCount();
5932        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
5933        int desired = layout.getLineTop(linecount);
5934
5935        final Drawables dr = mDrawables;
5936        if (dr != null) {
5937            desired = Math.max(desired, dr.mDrawableHeightLeft);
5938            desired = Math.max(desired, dr.mDrawableHeightRight);
5939        }
5940
5941        desired += pad;
5942        layout.setMaximumVisibleLineCount(0);
5943
5944        if (mMaxMode == LINES) {
5945            /*
5946             * Don't cap the hint to a certain number of lines.
5947             * (Do cap it, though, if we have a maximum pixel height.)
5948             */
5949            if (cap) {
5950                if (linecount > mMaximum) {
5951                    layout.setMaximumVisibleLineCount(mMaximum);
5952                    desired = layout.getLineTop(mMaximum);
5953
5954                    if (dr != null) {
5955                        desired = Math.max(desired, dr.mDrawableHeightLeft);
5956                        desired = Math.max(desired, dr.mDrawableHeightRight);
5957                    }
5958
5959                    desired += pad;
5960                    linecount = mMaximum;
5961                }
5962            }
5963        } else {
5964            desired = Math.min(desired, mMaximum);
5965        }
5966
5967        if (mMinMode == LINES) {
5968            if (linecount < mMinimum) {
5969                desired += getLineHeight() * (mMinimum - linecount);
5970            }
5971        } else {
5972            desired = Math.max(desired, mMinimum);
5973        }
5974
5975        // Check against our minimum height
5976        desired = Math.max(desired, getSuggestedMinimumHeight());
5977
5978        return desired;
5979    }
5980
5981    /**
5982     * Check whether a change to the existing text layout requires a
5983     * new view layout.
5984     */
5985    private void checkForResize() {
5986        boolean sizeChanged = false;
5987
5988        if (mLayout != null) {
5989            // Check if our width changed
5990            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
5991                sizeChanged = true;
5992                invalidate();
5993            }
5994
5995            // Check if our height changed
5996            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
5997                int desiredHeight = getDesiredHeight();
5998
5999                if (desiredHeight != this.getHeight()) {
6000                    sizeChanged = true;
6001                }
6002            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
6003                if (mDesiredHeightAtMeasure >= 0) {
6004                    int desiredHeight = getDesiredHeight();
6005
6006                    if (desiredHeight != mDesiredHeightAtMeasure) {
6007                        sizeChanged = true;
6008                    }
6009                }
6010            }
6011        }
6012
6013        if (sizeChanged) {
6014            requestLayout();
6015            // caller will have already invalidated
6016        }
6017    }
6018
6019    /**
6020     * Check whether entirely new text requires a new view layout
6021     * or merely a new text layout.
6022     */
6023    private void checkForRelayout() {
6024        // If we have a fixed width, we can just swap in a new text layout
6025        // if the text height stays the same or if the view height is fixed.
6026
6027        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
6028                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
6029                (mHint == null || mHintLayout != null) &&
6030                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
6031            // Static width, so try making a new text layout.
6032
6033            int oldht = mLayout.getHeight();
6034            int want = mLayout.getWidth();
6035            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
6036
6037            /*
6038             * No need to bring the text into view, since the size is not
6039             * changing (unless we do the requestLayout(), in which case it
6040             * will happen at measure).
6041             */
6042            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
6043                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
6044                          false);
6045
6046            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
6047                // In a fixed-height view, so use our new text layout.
6048                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
6049                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
6050                    invalidate();
6051                    return;
6052                }
6053
6054                // Dynamic height, but height has stayed the same,
6055                // so use our new text layout.
6056                if (mLayout.getHeight() == oldht &&
6057                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
6058                    invalidate();
6059                    return;
6060                }
6061            }
6062
6063            // We lose: the height has changed and we have a dynamic height.
6064            // Request a new view layout using our new text layout.
6065            requestLayout();
6066            invalidate();
6067        } else {
6068            // Dynamic width, so we have no choice but to request a new
6069            // view layout with a new text layout.
6070
6071            nullLayouts();
6072            requestLayout();
6073            invalidate();
6074        }
6075    }
6076
6077    /**
6078     * Returns true if anything changed.
6079     */
6080    private boolean bringTextIntoView() {
6081        int line = 0;
6082        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6083            line = mLayout.getLineCount() - 1;
6084        }
6085
6086        Layout.Alignment a = mLayout.getParagraphAlignment(line);
6087        int dir = mLayout.getParagraphDirection(line);
6088        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6089        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6090        int ht = mLayout.getHeight();
6091
6092        int scrollx, scrolly;
6093
6094        if (a == Layout.Alignment.ALIGN_CENTER) {
6095            /*
6096             * Keep centered if possible, or, if it is too wide to fit,
6097             * keep leading edge in view.
6098             */
6099
6100            int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
6101            int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
6102
6103            if (right - left < hspace) {
6104                scrollx = (right + left) / 2 - hspace / 2;
6105            } else {
6106                if (dir < 0) {
6107                    scrollx = right - hspace;
6108                } else {
6109                    scrollx = left;
6110                }
6111            }
6112        } else if (a == Layout.Alignment.ALIGN_NORMAL) {
6113            /*
6114             * Keep leading edge in view.
6115             */
6116
6117            if (dir < 0) {
6118                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
6119                scrollx = right - hspace;
6120            } else {
6121                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
6122            }
6123        } else /* a == Layout.Alignment.ALIGN_OPPOSITE */ {
6124            /*
6125             * Keep trailing edge in view.
6126             */
6127
6128            if (dir < 0) {
6129                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
6130            } else {
6131                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
6132                scrollx = right - hspace;
6133            }
6134        }
6135
6136        if (ht < vspace) {
6137            scrolly = 0;
6138        } else {
6139            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6140                scrolly = ht - vspace;
6141            } else {
6142                scrolly = 0;
6143            }
6144        }
6145
6146        if (scrollx != mScrollX || scrolly != mScrollY) {
6147            scrollTo(scrollx, scrolly);
6148            return true;
6149        } else {
6150            return false;
6151        }
6152    }
6153
6154    /**
6155     * Move the point, specified by the offset, into the view if it is needed.
6156     * This has to be called after layout. Returns true if anything changed.
6157     */
6158    public boolean bringPointIntoView(int offset) {
6159        boolean changed = false;
6160
6161        int line = mLayout.getLineForOffset(offset);
6162
6163        // FIXME: Is it okay to truncate this, or should we round?
6164        final int x = (int)mLayout.getPrimaryHorizontal(offset);
6165        final int top = mLayout.getLineTop(line);
6166        final int bottom = mLayout.getLineTop(line + 1);
6167
6168        int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
6169        int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
6170        int ht = mLayout.getHeight();
6171
6172        int grav;
6173
6174        switch (mLayout.getParagraphAlignment(line)) {
6175            case ALIGN_NORMAL:
6176                grav = 1;
6177                break;
6178
6179            case ALIGN_OPPOSITE:
6180                grav = -1;
6181                break;
6182
6183            default:
6184                grav = 0;
6185        }
6186
6187        grav *= mLayout.getParagraphDirection(line);
6188
6189        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6190        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6191
6192        int hslack = (bottom - top) / 2;
6193        int vslack = hslack;
6194
6195        if (vslack > vspace / 4)
6196            vslack = vspace / 4;
6197        if (hslack > hspace / 4)
6198            hslack = hspace / 4;
6199
6200        int hs = mScrollX;
6201        int vs = mScrollY;
6202
6203        if (top - vs < vslack)
6204            vs = top - vslack;
6205        if (bottom - vs > vspace - vslack)
6206            vs = bottom - (vspace - vslack);
6207        if (ht - vs < vspace)
6208            vs = ht - vspace;
6209        if (0 - vs > 0)
6210            vs = 0;
6211
6212        if (grav != 0) {
6213            if (x - hs < hslack) {
6214                hs = x - hslack;
6215            }
6216            if (x - hs > hspace - hslack) {
6217                hs = x - (hspace - hslack);
6218            }
6219        }
6220
6221        if (grav < 0) {
6222            if (left - hs > 0)
6223                hs = left;
6224            if (right - hs < hspace)
6225                hs = right - hspace;
6226        } else if (grav > 0) {
6227            if (right - hs < hspace)
6228                hs = right - hspace;
6229            if (left - hs > 0)
6230                hs = left;
6231        } else /* grav == 0 */ {
6232            if (right - left <= hspace) {
6233                /*
6234                 * If the entire text fits, center it exactly.
6235                 */
6236                hs = left - (hspace - (right - left)) / 2;
6237            } else if (x > right - hslack) {
6238                /*
6239                 * If we are near the right edge, keep the right edge
6240                 * at the edge of the view.
6241                 */
6242                hs = right - hspace;
6243            } else if (x < left + hslack) {
6244                /*
6245                 * If we are near the left edge, keep the left edge
6246                 * at the edge of the view.
6247                 */
6248                hs = left;
6249            } else if (left > hs) {
6250                /*
6251                 * Is there whitespace visible at the left?  Fix it if so.
6252                 */
6253                hs = left;
6254            } else if (right < hs + hspace) {
6255                /*
6256                 * Is there whitespace visible at the right?  Fix it if so.
6257                 */
6258                hs = right - hspace;
6259            } else {
6260                /*
6261                 * Otherwise, float as needed.
6262                 */
6263                if (x - hs < hslack) {
6264                    hs = x - hslack;
6265                }
6266                if (x - hs > hspace - hslack) {
6267                    hs = x - (hspace - hslack);
6268                }
6269            }
6270        }
6271
6272        if (hs != mScrollX || vs != mScrollY) {
6273            if (mScroller == null) {
6274                scrollTo(hs, vs);
6275            } else {
6276                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
6277                int dx = hs - mScrollX;
6278                int dy = vs - mScrollY;
6279
6280                if (duration > ANIMATED_SCROLL_GAP) {
6281                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
6282                    awakenScrollBars(mScroller.getDuration());
6283                    invalidate();
6284                } else {
6285                    if (!mScroller.isFinished()) {
6286                        mScroller.abortAnimation();
6287                    }
6288
6289                    scrollBy(dx, dy);
6290                }
6291
6292                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
6293            }
6294
6295            changed = true;
6296        }
6297
6298        if (isFocused()) {
6299            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
6300            // requestRectangleOnScreen() is in terms of content coordinates.
6301
6302            if (mTempRect == null) mTempRect = new Rect();
6303            mTempRect.set(x, top, x + 1, bottom);
6304            getInterestingRect(mTempRect, line);
6305            mTempRect.offset(mScrollX, mScrollY);
6306
6307            if (requestRectangleOnScreen(mTempRect)) {
6308                changed = true;
6309            }
6310        }
6311
6312        return changed;
6313    }
6314
6315    /**
6316     * Move the cursor, if needed, so that it is at an offset that is visible
6317     * to the user.  This will not move the cursor if it represents more than
6318     * one character (a selection range).  This will only work if the
6319     * TextView contains spannable text; otherwise it will do nothing.
6320     *
6321     * @return True if the cursor was actually moved, false otherwise.
6322     */
6323    public boolean moveCursorToVisibleOffset() {
6324        if (!(mText instanceof Spannable)) {
6325            return false;
6326        }
6327        int start = getSelectionStart();
6328        int end = getSelectionEnd();
6329        if (start != end) {
6330            return false;
6331        }
6332
6333        // First: make sure the line is visible on screen:
6334
6335        int line = mLayout.getLineForOffset(start);
6336
6337        final int top = mLayout.getLineTop(line);
6338        final int bottom = mLayout.getLineTop(line + 1);
6339        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6340        int vslack = (bottom - top) / 2;
6341        if (vslack > vspace / 4)
6342            vslack = vspace / 4;
6343        final int vs = mScrollY;
6344
6345        if (top < (vs+vslack)) {
6346            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
6347        } else if (bottom > (vspace+vs-vslack)) {
6348            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
6349        }
6350
6351        // Next: make sure the character is visible on screen:
6352
6353        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6354        final int hs = mScrollX;
6355        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
6356        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
6357
6358        // line might contain bidirectional text
6359        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
6360        final int highChar = leftChar > rightChar ? leftChar : rightChar;
6361
6362        int newStart = start;
6363        if (newStart < lowChar) {
6364            newStart = lowChar;
6365        } else if (newStart > highChar) {
6366            newStart = highChar;
6367        }
6368
6369        if (newStart != start) {
6370            Selection.setSelection((Spannable)mText, newStart);
6371            return true;
6372        }
6373
6374        return false;
6375    }
6376
6377    @Override
6378    public void computeScroll() {
6379        if (mScroller != null) {
6380            if (mScroller.computeScrollOffset()) {
6381                mScrollX = mScroller.getCurrX();
6382                mScrollY = mScroller.getCurrY();
6383                invalidateParentCaches();
6384                postInvalidate();  // So we draw again
6385            }
6386        }
6387    }
6388
6389    private void getInterestingRect(Rect r, int line) {
6390        convertFromViewportToContentCoordinates(r);
6391
6392        // Rectangle can can be expanded on first and last line to take
6393        // padding into account.
6394        // TODO Take left/right padding into account too?
6395        if (line == 0) r.top -= getExtendedPaddingTop();
6396        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
6397    }
6398
6399    private void convertFromViewportToContentCoordinates(Rect r) {
6400        final int horizontalOffset = viewportToContentHorizontalOffset();
6401        r.left += horizontalOffset;
6402        r.right += horizontalOffset;
6403
6404        final int verticalOffset = viewportToContentVerticalOffset();
6405        r.top += verticalOffset;
6406        r.bottom += verticalOffset;
6407    }
6408
6409    private int viewportToContentHorizontalOffset() {
6410        return getCompoundPaddingLeft() - mScrollX;
6411    }
6412
6413    private int viewportToContentVerticalOffset() {
6414        int offset = getExtendedPaddingTop() - mScrollY;
6415        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6416            offset += getVerticalOffset(false);
6417        }
6418        return offset;
6419    }
6420
6421    @Override
6422    public void debug(int depth) {
6423        super.debug(depth);
6424
6425        String output = debugIndent(depth);
6426        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
6427                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
6428                + "} ";
6429
6430        if (mText != null) {
6431
6432            output += "mText=\"" + mText + "\" ";
6433            if (mLayout != null) {
6434                output += "mLayout width=" + mLayout.getWidth()
6435                        + " height=" + mLayout.getHeight();
6436            }
6437        } else {
6438            output += "mText=NULL";
6439        }
6440        Log.d(VIEW_LOG_TAG, output);
6441    }
6442
6443    /**
6444     * Convenience for {@link Selection#getSelectionStart}.
6445     */
6446    @ViewDebug.ExportedProperty(category = "text")
6447    public int getSelectionStart() {
6448        return Selection.getSelectionStart(getText());
6449    }
6450
6451    /**
6452     * Convenience for {@link Selection#getSelectionEnd}.
6453     */
6454    @ViewDebug.ExportedProperty(category = "text")
6455    public int getSelectionEnd() {
6456        return Selection.getSelectionEnd(getText());
6457    }
6458
6459    /**
6460     * Return true iff there is a selection inside this text view.
6461     */
6462    public boolean hasSelection() {
6463        final int selectionStart = getSelectionStart();
6464        final int selectionEnd = getSelectionEnd();
6465
6466        return selectionStart >= 0 && selectionStart != selectionEnd;
6467    }
6468
6469    /**
6470     * Sets the properties of this field (lines, horizontally scrolling,
6471     * transformation method) to be for a single-line input.
6472     *
6473     * @attr ref android.R.styleable#TextView_singleLine
6474     */
6475    public void setSingleLine() {
6476        setSingleLine(true);
6477    }
6478
6479    /**
6480     * If true, sets the properties of this field (number of lines, horizontally scrolling,
6481     * transformation method) to be for a single-line input; if false, restores these to the default
6482     * conditions.
6483     *
6484     * Note that the default conditions are not necessarily those that were in effect prior this
6485     * method, and you may want to reset these properties to your custom values.
6486     *
6487     * @attr ref android.R.styleable#TextView_singleLine
6488     */
6489    @android.view.RemotableViewMethod
6490    public void setSingleLine(boolean singleLine) {
6491        // Could be used, but may break backward compatibility.
6492        // if (mSingleLine == singleLine) return;
6493        setInputTypeSingleLine(singleLine);
6494        applySingleLine(singleLine, true, true);
6495    }
6496
6497    /**
6498     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
6499     * @param singleLine
6500     */
6501    private void setInputTypeSingleLine(boolean singleLine) {
6502        if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6503            if (singleLine) {
6504                mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6505            } else {
6506                mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6507            }
6508        }
6509    }
6510
6511    private void applySingleLine(boolean singleLine, boolean applyTransformation,
6512            boolean changeMaxLines) {
6513        mSingleLine = singleLine;
6514        if (singleLine) {
6515            setLines(1);
6516            setHorizontallyScrolling(true);
6517            if (applyTransformation) {
6518                setTransformationMethod(SingleLineTransformationMethod.getInstance());
6519            }
6520        } else {
6521            if (changeMaxLines) {
6522                setMaxLines(Integer.MAX_VALUE);
6523            }
6524            setHorizontallyScrolling(false);
6525            if (applyTransformation) {
6526                setTransformationMethod(null);
6527            }
6528        }
6529    }
6530
6531    /**
6532     * Causes words in the text that are longer than the view is wide
6533     * to be ellipsized instead of broken in the middle.  You may also
6534     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
6535     * to constrain the text to a single line.  Use <code>null</code>
6536     * to turn off ellipsizing.
6537     *
6538     * @attr ref android.R.styleable#TextView_ellipsize
6539     */
6540    public void setEllipsize(TextUtils.TruncateAt where) {
6541        mEllipsize = where;
6542
6543        if (mLayout != null) {
6544            nullLayouts();
6545            requestLayout();
6546            invalidate();
6547        }
6548    }
6549
6550    /**
6551     * Sets how many times to repeat the marquee animation. Only applied if the
6552     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
6553     *
6554     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
6555     */
6556    public void setMarqueeRepeatLimit(int marqueeLimit) {
6557        mMarqueeRepeatLimit = marqueeLimit;
6558    }
6559
6560    /**
6561     * Returns where, if anywhere, words that are longer than the view
6562     * is wide should be ellipsized.
6563     */
6564    @ViewDebug.ExportedProperty
6565    public TextUtils.TruncateAt getEllipsize() {
6566        return mEllipsize;
6567    }
6568
6569    /**
6570     * Set the TextView so that when it takes focus, all the text is
6571     * selected.
6572     *
6573     * @attr ref android.R.styleable#TextView_selectAllOnFocus
6574     */
6575    @android.view.RemotableViewMethod
6576    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
6577        mSelectAllOnFocus = selectAllOnFocus;
6578
6579        if (selectAllOnFocus && !(mText instanceof Spannable)) {
6580            setText(mText, BufferType.SPANNABLE);
6581        }
6582    }
6583
6584    /**
6585     * Set whether the cursor is visible.  The default is true.
6586     *
6587     * @attr ref android.R.styleable#TextView_cursorVisible
6588     */
6589    @android.view.RemotableViewMethod
6590    public void setCursorVisible(boolean visible) {
6591        if (mCursorVisible != visible) {
6592            mCursorVisible = visible;
6593            invalidate();
6594
6595            makeBlink();
6596
6597            // InsertionPointCursorController depends on mCursorVisible
6598            prepareCursorControllers();
6599        }
6600    }
6601
6602    private boolean isCursorVisible() {
6603        return mCursorVisible && isTextEditable();
6604    }
6605
6606    private boolean canMarquee() {
6607        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
6608        return width > 0 && mLayout.getLineWidth(0) > width;
6609    }
6610
6611    private void startMarquee() {
6612        // Do not ellipsize EditText
6613        if (mInput != null) return;
6614
6615        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
6616            return;
6617        }
6618
6619        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
6620                getLineCount() == 1 && canMarquee()) {
6621
6622            if (mMarquee == null) mMarquee = new Marquee(this);
6623            mMarquee.start(mMarqueeRepeatLimit);
6624        }
6625    }
6626
6627    private void stopMarquee() {
6628        if (mMarquee != null && !mMarquee.isStopped()) {
6629            mMarquee.stop();
6630        }
6631    }
6632
6633    private void startStopMarquee(boolean start) {
6634        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6635            if (start) {
6636                startMarquee();
6637            } else {
6638                stopMarquee();
6639            }
6640        }
6641    }
6642
6643    private static final class Marquee extends Handler {
6644        // TODO: Add an option to configure this
6645        private static final float MARQUEE_DELTA_MAX = 0.07f;
6646        private static final int MARQUEE_DELAY = 1200;
6647        private static final int MARQUEE_RESTART_DELAY = 1200;
6648        private static final int MARQUEE_RESOLUTION = 1000 / 30;
6649        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
6650
6651        private static final byte MARQUEE_STOPPED = 0x0;
6652        private static final byte MARQUEE_STARTING = 0x1;
6653        private static final byte MARQUEE_RUNNING = 0x2;
6654
6655        private static final int MESSAGE_START = 0x1;
6656        private static final int MESSAGE_TICK = 0x2;
6657        private static final int MESSAGE_RESTART = 0x3;
6658
6659        private final WeakReference<TextView> mView;
6660
6661        private byte mStatus = MARQUEE_STOPPED;
6662        private final float mScrollUnit;
6663        private float mMaxScroll;
6664        float mMaxFadeScroll;
6665        private float mGhostStart;
6666        private float mGhostOffset;
6667        private float mFadeStop;
6668        private int mRepeatLimit;
6669
6670        float mScroll;
6671
6672        Marquee(TextView v) {
6673            final float density = v.getContext().getResources().getDisplayMetrics().density;
6674            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / MARQUEE_RESOLUTION;
6675            mView = new WeakReference<TextView>(v);
6676        }
6677
6678        @Override
6679        public void handleMessage(Message msg) {
6680            switch (msg.what) {
6681                case MESSAGE_START:
6682                    mStatus = MARQUEE_RUNNING;
6683                    tick();
6684                    break;
6685                case MESSAGE_TICK:
6686                    tick();
6687                    break;
6688                case MESSAGE_RESTART:
6689                    if (mStatus == MARQUEE_RUNNING) {
6690                        if (mRepeatLimit >= 0) {
6691                            mRepeatLimit--;
6692                        }
6693                        start(mRepeatLimit);
6694                    }
6695                    break;
6696            }
6697        }
6698
6699        void tick() {
6700            if (mStatus != MARQUEE_RUNNING) {
6701                return;
6702            }
6703
6704            removeMessages(MESSAGE_TICK);
6705
6706            final TextView textView = mView.get();
6707            if (textView != null && (textView.isFocused() || textView.isSelected())) {
6708                mScroll += mScrollUnit;
6709                if (mScroll > mMaxScroll) {
6710                    mScroll = mMaxScroll;
6711                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
6712                } else {
6713                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
6714                }
6715                textView.invalidate();
6716            }
6717        }
6718
6719        void stop() {
6720            mStatus = MARQUEE_STOPPED;
6721            removeMessages(MESSAGE_START);
6722            removeMessages(MESSAGE_RESTART);
6723            removeMessages(MESSAGE_TICK);
6724            resetScroll();
6725        }
6726
6727        private void resetScroll() {
6728            mScroll = 0.0f;
6729            final TextView textView = mView.get();
6730            if (textView != null) textView.invalidate();
6731        }
6732
6733        void start(int repeatLimit) {
6734            if (repeatLimit == 0) {
6735                stop();
6736                return;
6737            }
6738            mRepeatLimit = repeatLimit;
6739            final TextView textView = mView.get();
6740            if (textView != null && textView.mLayout != null) {
6741                mStatus = MARQUEE_STARTING;
6742                mScroll = 0.0f;
6743                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
6744                        textView.getCompoundPaddingRight();
6745                final float lineWidth = textView.mLayout.getLineWidth(0);
6746                final float gap = textWidth / 3.0f;
6747                mGhostStart = lineWidth - textWidth + gap;
6748                mMaxScroll = mGhostStart + textWidth;
6749                mGhostOffset = lineWidth + gap;
6750                mFadeStop = lineWidth + textWidth / 6.0f;
6751                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
6752
6753                textView.invalidate();
6754                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
6755            }
6756        }
6757
6758        float getGhostOffset() {
6759            return mGhostOffset;
6760        }
6761
6762        boolean shouldDrawLeftFade() {
6763            return mScroll <= mFadeStop;
6764        }
6765
6766        boolean shouldDrawGhost() {
6767            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
6768        }
6769
6770        boolean isRunning() {
6771            return mStatus == MARQUEE_RUNNING;
6772        }
6773
6774        boolean isStopped() {
6775            return mStatus == MARQUEE_STOPPED;
6776        }
6777    }
6778
6779    /**
6780     * This method is called when the text is changed, in case any subclasses
6781     * would like to know.
6782     *
6783     * Within <code>text</code>, the <code>lengthAfter</code> characters
6784     * beginning at <code>start</code> have just replaced old text that had
6785     * length <code>lengthBefore</code>. It is an error to attempt to make
6786     * changes to <code>text</code> from this callback.
6787     *
6788     * @param text The text the TextView is displaying
6789     * @param start The offset of the start of the range of the text that was
6790     * modified
6791     * @param lengthBefore The length of the former text that has been replaced
6792     * @param lengthAfter The length of the replacement modified text
6793     */
6794    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
6795        // intentionally empty
6796    }
6797
6798    /**
6799     * This method is called when the selection has changed, in case any
6800     * subclasses would like to know.
6801     *
6802     * @param selStart The new selection start location.
6803     * @param selEnd The new selection end location.
6804     */
6805    protected void onSelectionChanged(int selStart, int selEnd) {
6806        // intentionally empty
6807    }
6808
6809    /**
6810     * Adds a TextWatcher to the list of those whose methods are called
6811     * whenever this TextView's text changes.
6812     * <p>
6813     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
6814     * not called after {@link #setText} calls.  Now, doing {@link #setText}
6815     * if there are any text changed listeners forces the buffer type to
6816     * Editable if it would not otherwise be and does call this method.
6817     */
6818    public void addTextChangedListener(TextWatcher watcher) {
6819        if (mListeners == null) {
6820            mListeners = new ArrayList<TextWatcher>();
6821        }
6822
6823        mListeners.add(watcher);
6824    }
6825
6826    /**
6827     * Removes the specified TextWatcher from the list of those whose
6828     * methods are called
6829     * whenever this TextView's text changes.
6830     */
6831    public void removeTextChangedListener(TextWatcher watcher) {
6832        if (mListeners != null) {
6833            int i = mListeners.indexOf(watcher);
6834
6835            if (i >= 0) {
6836                mListeners.remove(i);
6837            }
6838        }
6839    }
6840
6841    private void sendBeforeTextChanged(CharSequence text, int start, int before,
6842                                   int after) {
6843        if (mListeners != null) {
6844            final ArrayList<TextWatcher> list = mListeners;
6845            final int count = list.size();
6846            for (int i = 0; i < count; i++) {
6847                list.get(i).beforeTextChanged(text, start, before, after);
6848            }
6849        }
6850    }
6851
6852    /**
6853     * Not private so it can be called from an inner class without going
6854     * through a thunk.
6855     */
6856    void sendOnTextChanged(CharSequence text, int start, int before,
6857                                   int after) {
6858        if (mListeners != null) {
6859            final ArrayList<TextWatcher> list = mListeners;
6860            final int count = list.size();
6861            for (int i = 0; i < count; i++) {
6862                list.get(i).onTextChanged(text, start, before, after);
6863            }
6864        }
6865    }
6866
6867    /**
6868     * Not private so it can be called from an inner class without going
6869     * through a thunk.
6870     */
6871    void sendAfterTextChanged(Editable text) {
6872        if (mListeners != null) {
6873            final ArrayList<TextWatcher> list = mListeners;
6874            final int count = list.size();
6875            for (int i = 0; i < count; i++) {
6876                list.get(i).afterTextChanged(text);
6877            }
6878        }
6879    }
6880
6881    /**
6882     * Not private so it can be called from an inner class without going
6883     * through a thunk.
6884     */
6885    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
6886        final InputMethodState ims = mInputMethodState;
6887        if (ims == null || ims.mBatchEditNesting == 0) {
6888            updateAfterEdit();
6889        }
6890        if (ims != null) {
6891            ims.mContentChanged = true;
6892            if (ims.mChangedStart < 0) {
6893                ims.mChangedStart = start;
6894                ims.mChangedEnd = start+before;
6895            } else {
6896                ims.mChangedStart = Math.min(ims.mChangedStart, start);
6897                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
6898            }
6899            ims.mChangedDelta += after-before;
6900        }
6901
6902        sendOnTextChanged(buffer, start, before, after);
6903        onTextChanged(buffer, start, before, after);
6904
6905        // Hide the controllers if the amount of content changed
6906        if (before != after) {
6907            hideControllers();
6908        }
6909    }
6910
6911    /**
6912     * Not private so it can be called from an inner class without going
6913     * through a thunk.
6914     */
6915    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
6916        // XXX Make the start and end move together if this ends up
6917        // spending too much time invalidating.
6918
6919        boolean selChanged = false;
6920        int newSelStart=-1, newSelEnd=-1;
6921
6922        final InputMethodState ims = mInputMethodState;
6923
6924        if (what == Selection.SELECTION_END) {
6925            mHighlightPathBogus = true;
6926            selChanged = true;
6927            newSelEnd = newStart;
6928
6929            if (!isFocused()) {
6930                mSelectionMoved = true;
6931            }
6932
6933            if (oldStart >= 0 || newStart >= 0) {
6934                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
6935                registerForPreDraw();
6936                makeBlink();
6937            }
6938        }
6939
6940        if (what == Selection.SELECTION_START) {
6941            mHighlightPathBogus = true;
6942            selChanged = true;
6943            newSelStart = newStart;
6944
6945            if (!isFocused()) {
6946                mSelectionMoved = true;
6947            }
6948
6949            if (oldStart >= 0 || newStart >= 0) {
6950                int end = Selection.getSelectionEnd(buf);
6951                invalidateCursor(end, oldStart, newStart);
6952            }
6953        }
6954
6955        if (selChanged) {
6956            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
6957                if (newSelStart < 0) {
6958                    newSelStart = Selection.getSelectionStart(buf);
6959                }
6960                if (newSelEnd < 0) {
6961                    newSelEnd = Selection.getSelectionEnd(buf);
6962                }
6963                onSelectionChanged(newSelStart, newSelEnd);
6964            }
6965        }
6966
6967        if (what instanceof UpdateAppearance ||
6968            what instanceof ParagraphStyle) {
6969            if (ims == null || ims.mBatchEditNesting == 0) {
6970                invalidate();
6971                mHighlightPathBogus = true;
6972                checkForResize();
6973            } else {
6974                ims.mContentChanged = true;
6975            }
6976        }
6977
6978        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
6979            mHighlightPathBogus = true;
6980            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
6981                ims.mSelectionModeChanged = true;
6982            }
6983
6984            if (Selection.getSelectionStart(buf) >= 0) {
6985                if (ims == null || ims.mBatchEditNesting == 0) {
6986                    invalidateCursor();
6987                } else {
6988                    ims.mCursorChanged = true;
6989                }
6990            }
6991        }
6992
6993        if (what instanceof ParcelableSpan) {
6994            // If this is a span that can be sent to a remote process,
6995            // the current extract editor would be interested in it.
6996            if (ims != null && ims.mExtracting != null) {
6997                if (ims.mBatchEditNesting != 0) {
6998                    if (oldStart >= 0) {
6999                        if (ims.mChangedStart > oldStart) {
7000                            ims.mChangedStart = oldStart;
7001                        }
7002                        if (ims.mChangedStart > oldEnd) {
7003                            ims.mChangedStart = oldEnd;
7004                        }
7005                    }
7006                    if (newStart >= 0) {
7007                        if (ims.mChangedStart > newStart) {
7008                            ims.mChangedStart = newStart;
7009                        }
7010                        if (ims.mChangedStart > newEnd) {
7011                            ims.mChangedStart = newEnd;
7012                        }
7013                    }
7014                } else {
7015                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
7016                            + oldStart + "-" + oldEnd + ","
7017                            + newStart + "-" + newEnd + what);
7018                    ims.mContentChanged = true;
7019                }
7020            }
7021        }
7022    }
7023
7024    private class ChangeWatcher
7025    implements TextWatcher, SpanWatcher {
7026
7027        private CharSequence mBeforeText;
7028
7029        public void beforeTextChanged(CharSequence buffer, int start,
7030                                      int before, int after) {
7031            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
7032                    + " before=" + before + " after=" + after + ": " + buffer);
7033
7034            if (AccessibilityManager.getInstance(mContext).isEnabled()
7035                    && !isPasswordInputType(mInputType)
7036                    && !hasPasswordTransformationMethod()) {
7037                mBeforeText = buffer.toString();
7038            }
7039
7040            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
7041        }
7042
7043        public void onTextChanged(CharSequence buffer, int start,
7044                                  int before, int after) {
7045            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
7046                    + " before=" + before + " after=" + after + ": " + buffer);
7047            TextView.this.handleTextChanged(buffer, start, before, after);
7048
7049            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
7050                    (isFocused() || isSelected() &&
7051                    isShown())) {
7052                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
7053                mBeforeText = null;
7054            }
7055        }
7056
7057        public void afterTextChanged(Editable buffer) {
7058            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
7059            TextView.this.sendAfterTextChanged(buffer);
7060
7061            if (MetaKeyKeyListener.getMetaState(buffer,
7062                                 MetaKeyKeyListener.META_SELECTING) != 0) {
7063                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
7064            }
7065        }
7066
7067        public void onSpanChanged(Spannable buf,
7068                                  Object what, int s, int e, int st, int en) {
7069            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
7070                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
7071            TextView.this.spanChange(buf, what, s, st, e, en);
7072        }
7073
7074        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
7075            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
7076                    + " what=" + what + ": " + buf);
7077            TextView.this.spanChange(buf, what, -1, s, -1, e);
7078        }
7079
7080        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
7081            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
7082                    + " what=" + what + ": " + buf);
7083            TextView.this.spanChange(buf, what, s, -1, e, -1);
7084        }
7085    }
7086
7087    /**
7088     * @hide
7089     */
7090    @Override
7091    public void dispatchFinishTemporaryDetach() {
7092        mDispatchTemporaryDetach = true;
7093        super.dispatchFinishTemporaryDetach();
7094        mDispatchTemporaryDetach = false;
7095    }
7096
7097    @Override
7098    public void onStartTemporaryDetach() {
7099        super.onStartTemporaryDetach();
7100        // Only track when onStartTemporaryDetach() is called directly,
7101        // usually because this instance is an editable field in a list
7102        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
7103
7104        // Because of View recycling in ListView, there is no easy way to know when a TextView with
7105        // selection becomes visible again. Until a better solution is found, stop text selection
7106        // mode (if any) as soon as this TextView is recycled.
7107        stopSelectionActionMode();
7108    }
7109
7110    @Override
7111    public void onFinishTemporaryDetach() {
7112        super.onFinishTemporaryDetach();
7113        // Only track when onStartTemporaryDetach() is called directly,
7114        // usually because this instance is an editable field in a list
7115        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
7116    }
7117
7118    @Override
7119    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
7120        if (mTemporaryDetach) {
7121            // If we are temporarily in the detach state, then do nothing.
7122            super.onFocusChanged(focused, direction, previouslyFocusedRect);
7123            return;
7124        }
7125
7126        mShowCursor = SystemClock.uptimeMillis();
7127
7128        ensureEndedBatchEdit();
7129
7130        if (focused) {
7131            int selStart = getSelectionStart();
7132            int selEnd = getSelectionEnd();
7133
7134            // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection
7135            // mode for these, unless there was a specific selection already started.
7136            final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 &&
7137                    selEnd == mText.length();
7138            mCreatedWithASelection = mFrozenWithFocus && hasSelection() && !isFocusHighlighted;
7139
7140            if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) {
7141                // If a tap was used to give focus to that view, move cursor at tap position.
7142                // Has to be done before onTakeFocus, which can be overloaded.
7143                final int lastTapPosition = getLastTapPosition();
7144                if (lastTapPosition >= 0) {
7145                    Selection.setSelection((Spannable) mText, lastTapPosition);
7146                }
7147
7148                if (mMovement != null) {
7149                    mMovement.onTakeFocus(this, (Spannable) mText, direction);
7150                }
7151
7152                // The DecorView does not have focus when the 'Done' ExtractEditText button is
7153                // pressed. Since it is the ViewRoot's mView, it requests focus before
7154                // ExtractEditText clears focus, which gives focus to the ExtractEditText.
7155                // This special case ensure that we keep current selection in that case.
7156                // It would be better to know why the DecorView does not have focus at that time.
7157                if (((this instanceof ExtractEditText) || mSelectionMoved) &&
7158                        selStart >= 0 && selEnd >= 0) {
7159                    /*
7160                     * Someone intentionally set the selection, so let them
7161                     * do whatever it is that they wanted to do instead of
7162                     * the default on-focus behavior.  We reset the selection
7163                     * here instead of just skipping the onTakeFocus() call
7164                     * because some movement methods do something other than
7165                     * just setting the selection in theirs and we still
7166                     * need to go through that path.
7167                     */
7168                    Selection.setSelection((Spannable) mText, selStart, selEnd);
7169                }
7170
7171                if (mSelectAllOnFocus) {
7172                    selectAll();
7173                }
7174
7175                mTouchFocusSelected = true;
7176            }
7177
7178            mFrozenWithFocus = false;
7179            mSelectionMoved = false;
7180
7181            if (mText instanceof Spannable) {
7182                Spannable sp = (Spannable) mText;
7183                MetaKeyKeyListener.resetMetaState(sp);
7184            }
7185
7186            makeBlink();
7187
7188            if (mError != null) {
7189                showError();
7190            }
7191        } else {
7192            if (mError != null) {
7193                hideError();
7194            }
7195            // Don't leave us in the middle of a batch edit.
7196            onEndBatchEdit();
7197
7198            if (this instanceof ExtractEditText) {
7199                // terminateTextSelectionMode removes selection, which we want to keep when
7200                // ExtractEditText goes out of focus.
7201                final int selStart = getSelectionStart();
7202                final int selEnd = getSelectionEnd();
7203                hideControllers();
7204                Selection.setSelection((Spannable) mText, selStart, selEnd);
7205            } else {
7206                hideControllers();
7207            }
7208
7209            // No need to create the controller
7210            if (mSelectionModifierCursorController != null) {
7211                mSelectionModifierCursorController.resetTouchOffsets();
7212            }
7213        }
7214
7215        startStopMarquee(focused);
7216
7217        if (mTransformation != null) {
7218            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
7219        }
7220
7221        super.onFocusChanged(focused, direction, previouslyFocusedRect);
7222    }
7223
7224    private int getLastTapPosition() {
7225        // No need to create the controller at that point, no last tap position saved
7226        if (mSelectionModifierCursorController != null) {
7227            int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset();
7228            if (lastTapPosition >= 0) {
7229                // Safety check, should not be possible.
7230                if (lastTapPosition > mText.length()) {
7231                    Log.e(LOG_TAG, "Invalid tap focus position (" + lastTapPosition + " vs "
7232                            + mText.length() + ")");
7233                    lastTapPosition = mText.length();
7234                }
7235                return lastTapPosition;
7236            }
7237        }
7238
7239        return -1;
7240    }
7241
7242    @Override
7243    public void onWindowFocusChanged(boolean hasWindowFocus) {
7244        super.onWindowFocusChanged(hasWindowFocus);
7245
7246        if (hasWindowFocus) {
7247            if (mBlink != null) {
7248                mBlink.uncancel();
7249                makeBlink();
7250            }
7251        } else {
7252            if (mBlink != null) {
7253                mBlink.cancel();
7254            }
7255            // Don't leave us in the middle of a batch edit.
7256            onEndBatchEdit();
7257            if (mInputContentType != null) {
7258                mInputContentType.enterDown = false;
7259            }
7260            hideControllers();
7261        }
7262
7263        startStopMarquee(hasWindowFocus);
7264    }
7265
7266    @Override
7267    protected void onVisibilityChanged(View changedView, int visibility) {
7268        super.onVisibilityChanged(changedView, visibility);
7269        if (visibility != VISIBLE) {
7270            hideControllers();
7271        }
7272    }
7273
7274    /**
7275     * Use {@link BaseInputConnection#removeComposingSpans
7276     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
7277     * state from this text view.
7278     */
7279    public void clearComposingText() {
7280        if (mText instanceof Spannable) {
7281            BaseInputConnection.removeComposingSpans((Spannable)mText);
7282        }
7283    }
7284
7285    @Override
7286    public void setSelected(boolean selected) {
7287        boolean wasSelected = isSelected();
7288
7289        super.setSelected(selected);
7290
7291        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7292            if (selected) {
7293                startMarquee();
7294            } else {
7295                stopMarquee();
7296            }
7297        }
7298    }
7299
7300    @Override
7301    public boolean onTouchEvent(MotionEvent event) {
7302        final int action = event.getActionMasked();
7303
7304        if (hasInsertionController()) {
7305            getInsertionController().onTouchEvent(event);
7306        }
7307        if (hasSelectionController()) {
7308            getSelectionController().onTouchEvent(event);
7309        }
7310
7311        if (action == MotionEvent.ACTION_DOWN) {
7312            mLastDownPositionX = (int) event.getX();
7313            mLastDownPositionY = (int) event.getY();
7314
7315            // Reset this state; it will be re-set if super.onTouchEvent
7316            // causes focus to move to the view.
7317            mTouchFocusSelected = false;
7318            mIgnoreActionUpEvent = false;
7319        }
7320
7321        final boolean superResult = super.onTouchEvent(event);
7322
7323        /*
7324         * Don't handle the release after a long press, because it will
7325         * move the selection away from whatever the menu action was
7326         * trying to affect.
7327         */
7328        if (mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
7329            mDiscardNextActionUp = false;
7330            return superResult;
7331        }
7332
7333        final boolean touchIsFinished = action == MotionEvent.ACTION_UP && !mIgnoreActionUpEvent &&
7334                isFocused();
7335
7336        if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
7337                && mText instanceof Spannable && mLayout != null) {
7338            boolean handled = false;
7339
7340            if (mMovement != null) {
7341                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
7342            }
7343
7344            if (mLinksClickable && mAutoLinkMask != 0 && mTextIsSelectable && touchIsFinished) {
7345                // The LinkMovementMethod which should handle taps on links has not been installed
7346                // to support text selection. We reproduce its behavior here to open links.
7347                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
7348                        getSelectionEnd(), ClickableSpan.class);
7349
7350                if (links.length != 0) {
7351                    links[0].onClick(this);
7352                    handled = true;
7353                }
7354            }
7355
7356            if ((isTextEditable() || mTextIsSelectable) && touchIsFinished) {
7357                // Show the IME, except when selecting in read-only text.
7358                if (!mTextIsSelectable) {
7359                    final InputMethodManager imm = InputMethodManager.peekInstance();
7360                    handled |= imm != null && imm.showSoftInput(this, 0);
7361                }
7362
7363                boolean selectAllGotFocus = mSelectAllOnFocus && didTouchFocusSelect();
7364                if (!selectAllGotFocus && hasSelection()) {
7365                    startSelectionActionMode();
7366                } else {
7367                    stopSelectionActionMode();
7368                    hideSuggestions();
7369                    if (hasInsertionController() && !selectAllGotFocus && mText.length() > 0) {
7370                        getInsertionController().show();
7371                    }
7372                }
7373            }
7374
7375            if (handled) {
7376                return true;
7377            }
7378        }
7379
7380        return superResult;
7381    }
7382
7383    @Override
7384    public boolean onGenericMotionEvent(MotionEvent event) {
7385        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7386            try {
7387                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
7388                    return true;
7389                }
7390            } catch (AbstractMethodError ex) {
7391                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
7392                // Ignore its absence in case third party applications implemented the
7393                // interface directly.
7394            }
7395        }
7396        return super.onGenericMotionEvent(event);
7397    }
7398
7399    private void prepareCursorControllers() {
7400        boolean windowSupportsHandles = false;
7401
7402        ViewGroup.LayoutParams params = getRootView().getLayoutParams();
7403        if (params instanceof WindowManager.LayoutParams) {
7404            WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params;
7405            windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW
7406                    || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW;
7407        }
7408
7409        mInsertionControllerEnabled = windowSupportsHandles && isCursorVisible() && mLayout != null;
7410        mSelectionControllerEnabled = windowSupportsHandles && textCanBeSelected() &&
7411                mLayout != null;
7412
7413        if (!mInsertionControllerEnabled) {
7414            hideInsertionPointCursorController();
7415            if (mInsertionPointCursorController != null) {
7416                mInsertionPointCursorController.onDetached();
7417                mInsertionPointCursorController = null;
7418            }
7419        }
7420
7421        if (!mSelectionControllerEnabled) {
7422            stopSelectionActionMode();
7423            if (mSelectionModifierCursorController != null) {
7424                mSelectionModifierCursorController.onDetached();
7425                mSelectionModifierCursorController = null;
7426            }
7427        }
7428    }
7429
7430    /**
7431     * @return True iff this TextView contains a text that can be edited, or if this is
7432     * a selectable TextView.
7433     */
7434    private boolean isTextEditable() {
7435        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
7436    }
7437
7438    /**
7439     * Returns true, only while processing a touch gesture, if the initial
7440     * touch down event caused focus to move to the text view and as a result
7441     * its selection changed.  Only valid while processing the touch gesture
7442     * of interest.
7443     */
7444    public boolean didTouchFocusSelect() {
7445        return mTouchFocusSelected;
7446    }
7447
7448    @Override
7449    public void cancelLongPress() {
7450        super.cancelLongPress();
7451        mIgnoreActionUpEvent = true;
7452    }
7453
7454    @Override
7455    public boolean onTrackballEvent(MotionEvent event) {
7456        if (mMovement != null && mText instanceof Spannable &&
7457            mLayout != null) {
7458            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
7459                return true;
7460            }
7461        }
7462
7463        return super.onTrackballEvent(event);
7464    }
7465
7466    public void setScroller(Scroller s) {
7467        mScroller = s;
7468    }
7469
7470    private static class Blink extends Handler implements Runnable {
7471        private final WeakReference<TextView> mView;
7472        private boolean mCancelled;
7473
7474        public Blink(TextView v) {
7475            mView = new WeakReference<TextView>(v);
7476        }
7477
7478        public void run() {
7479            if (mCancelled) {
7480                return;
7481            }
7482
7483            removeCallbacks(Blink.this);
7484
7485            TextView tv = mView.get();
7486
7487            if (tv != null && tv.shouldBlink()) {
7488                if (tv.mLayout != null) {
7489                    tv.invalidateCursorPath();
7490                }
7491
7492                postAtTime(this, SystemClock.uptimeMillis() + BLINK);
7493            }
7494        }
7495
7496        void cancel() {
7497            if (!mCancelled) {
7498                removeCallbacks(Blink.this);
7499                mCancelled = true;
7500            }
7501        }
7502
7503        void uncancel() {
7504            mCancelled = false;
7505        }
7506    }
7507
7508    /**
7509     * @return True when the TextView isFocused and has a valid zero-length selection (cursor).
7510     */
7511    private boolean shouldBlink() {
7512        if (!isFocused()) return false;
7513
7514        final int start = getSelectionStart();
7515        if (start < 0) return false;
7516
7517        final int end = getSelectionEnd();
7518        if (end < 0) return false;
7519
7520        return start == end;
7521    }
7522
7523    private void makeBlink() {
7524        if (isCursorVisible()) {
7525            if (shouldBlink()) {
7526                mShowCursor = SystemClock.uptimeMillis();
7527                if (mBlink == null) mBlink = new Blink(this);
7528                mBlink.removeCallbacks(mBlink);
7529                mBlink.postAtTime(mBlink, mShowCursor + BLINK);
7530            }
7531        } else {
7532            if (mBlink != null) mBlink.removeCallbacks(mBlink);
7533        }
7534    }
7535
7536    @Override
7537    protected float getLeftFadingEdgeStrength() {
7538        if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return 0.0f;
7539        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7540            if (mMarquee != null && !mMarquee.isStopped()) {
7541                final Marquee marquee = mMarquee;
7542                if (marquee.shouldDrawLeftFade()) {
7543                    return marquee.mScroll / getHorizontalFadingEdgeLength();
7544                } else {
7545                    return 0.0f;
7546                }
7547            } else if (getLineCount() == 1) {
7548                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7549                    case Gravity.LEFT:
7550                        return 0.0f;
7551                    case Gravity.RIGHT:
7552                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
7553                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
7554                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
7555                    case Gravity.CENTER_HORIZONTAL:
7556                        return 0.0f;
7557                }
7558            }
7559        }
7560        return super.getLeftFadingEdgeStrength();
7561    }
7562
7563    @Override
7564    protected float getRightFadingEdgeStrength() {
7565        if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return 0.0f;
7566        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7567            if (mMarquee != null && !mMarquee.isStopped()) {
7568                final Marquee marquee = mMarquee;
7569                return (marquee.mMaxFadeScroll - marquee.mScroll) / getHorizontalFadingEdgeLength();
7570            } else if (getLineCount() == 1) {
7571                switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7572                    case Gravity.LEFT:
7573                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
7574                                getCompoundPaddingRight();
7575                        final float lineWidth = mLayout.getLineWidth(0);
7576                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
7577                    case Gravity.RIGHT:
7578                        return 0.0f;
7579                    case Gravity.CENTER_HORIZONTAL:
7580                    case Gravity.FILL_HORIZONTAL:
7581                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
7582                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
7583                                getHorizontalFadingEdgeLength();
7584                }
7585            }
7586        }
7587        return super.getRightFadingEdgeStrength();
7588    }
7589
7590    @Override
7591    protected int computeHorizontalScrollRange() {
7592        if (mLayout != null) {
7593            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
7594                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
7595        }
7596
7597        return super.computeHorizontalScrollRange();
7598    }
7599
7600    @Override
7601    protected int computeVerticalScrollRange() {
7602        if (mLayout != null)
7603            return mLayout.getHeight();
7604
7605        return super.computeVerticalScrollRange();
7606    }
7607
7608    @Override
7609    protected int computeVerticalScrollExtent() {
7610        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
7611    }
7612
7613    public enum BufferType {
7614        NORMAL, SPANNABLE, EDITABLE,
7615    }
7616
7617    /**
7618     * Returns the TextView_textColor attribute from the
7619     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
7620     * from the TextView_textAppearance attribute, if TextView_textColor
7621     * was not set directly.
7622     */
7623    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
7624        ColorStateList colors;
7625        colors = attrs.getColorStateList(com.android.internal.R.styleable.
7626                                         TextView_textColor);
7627
7628        if (colors == null) {
7629            int ap = attrs.getResourceId(com.android.internal.R.styleable.
7630                                         TextView_textAppearance, -1);
7631            if (ap != -1) {
7632                TypedArray appearance;
7633                appearance = context.obtainStyledAttributes(ap,
7634                                            com.android.internal.R.styleable.TextAppearance);
7635                colors = appearance.getColorStateList(com.android.internal.R.styleable.
7636                                                  TextAppearance_textColor);
7637                appearance.recycle();
7638            }
7639        }
7640
7641        return colors;
7642    }
7643
7644    /**
7645     * Returns the default color from the TextView_textColor attribute
7646     * from the AttributeSet, if set, or the default color from the
7647     * TextAppearance_textColor from the TextView_textAppearance attribute,
7648     * if TextView_textColor was not set directly.
7649     */
7650    public static int getTextColor(Context context,
7651                                   TypedArray attrs,
7652                                   int def) {
7653        ColorStateList colors = getTextColors(context, attrs);
7654
7655        if (colors == null) {
7656            return def;
7657        } else {
7658            return colors.getDefaultColor();
7659        }
7660    }
7661
7662    @Override
7663    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
7664        final int filteredMetaState = event.getMetaState() & ~KeyEvent.META_CTRL_MASK;
7665        if (KeyEvent.metaStateHasNoModifiers(filteredMetaState)) {
7666            switch (keyCode) {
7667            case KeyEvent.KEYCODE_A:
7668                if (canSelectText()) {
7669                    return onTextContextMenuItem(ID_SELECT_ALL);
7670                }
7671                break;
7672            case KeyEvent.KEYCODE_X:
7673                if (canCut()) {
7674                    return onTextContextMenuItem(ID_CUT);
7675                }
7676                break;
7677            case KeyEvent.KEYCODE_C:
7678                if (canCopy()) {
7679                    return onTextContextMenuItem(ID_COPY);
7680                }
7681                break;
7682            case KeyEvent.KEYCODE_V:
7683                if (canPaste()) {
7684                    return onTextContextMenuItem(ID_PASTE);
7685                }
7686                break;
7687            }
7688        }
7689        return super.onKeyShortcut(keyCode, event);
7690    }
7691
7692    /**
7693     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
7694     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
7695     * a selection controller (see {@link #prepareCursorControllers()}), but this is not sufficient.
7696     */
7697    private boolean canSelectText() {
7698        return hasSelectionController() && mText.length() != 0;
7699    }
7700
7701    /**
7702     * Test based on the <i>intrinsic</i> charateristics of the TextView.
7703     * The text must be spannable and the movement method must allow for arbitary selection.
7704     *
7705     * See also {@link #canSelectText()}.
7706     */
7707    private boolean textCanBeSelected() {
7708        // prepareCursorController() relies on this method.
7709        // If you change this condition, make sure prepareCursorController is called anywhere
7710        // the value of this condition might be changed.
7711        return mText instanceof Spannable && mMovement != null && mMovement.canSelectArbitrarily();
7712    }
7713
7714    private boolean canCut() {
7715        if (hasPasswordTransformationMethod()) {
7716            return false;
7717        }
7718
7719        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mInput != null) {
7720            return true;
7721        }
7722
7723        return false;
7724    }
7725
7726    private boolean canCopy() {
7727        if (hasPasswordTransformationMethod()) {
7728            return false;
7729        }
7730
7731        if (mText.length() > 0 && hasSelection()) {
7732            return true;
7733        }
7734
7735        return false;
7736    }
7737
7738    private boolean canPaste() {
7739        return (mText instanceof Editable &&
7740                mInput != null &&
7741                getSelectionStart() >= 0 &&
7742                getSelectionEnd() >= 0 &&
7743                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
7744                hasPrimaryClip());
7745    }
7746
7747    private boolean isWordCharacter(int c, int type) {
7748        return (c == '\'' || c == '"' ||
7749                type == Character.UPPERCASE_LETTER ||
7750                type == Character.LOWERCASE_LETTER ||
7751                type == Character.TITLECASE_LETTER ||
7752                type == Character.MODIFIER_LETTER ||
7753                type == Character.OTHER_LETTER || // Should handle asian characters
7754                type == Character.DECIMAL_DIGIT_NUMBER);
7755    }
7756
7757    /**
7758     * Returns the offsets delimiting the 'word' located at position offset.
7759     *
7760     * @param offset An offset in the text.
7761     * @return The offsets for the start and end of the word located at <code>offset</code>.
7762     * The two ints offsets are packed in a long using {@link #packRangeInLong(int, int)}.
7763     * Returns -1 if no valid word was found.
7764     */
7765    private long getWordLimitsAt(int offset) {
7766        int klass = mInputType & InputType.TYPE_MASK_CLASS;
7767        int variation = mInputType & InputType.TYPE_MASK_VARIATION;
7768
7769        // Text selection is not permitted in password fields
7770        if (hasPasswordTransformationMethod()) {
7771            return -1;
7772        }
7773
7774        final int len = mText.length();
7775
7776        // Specific text fields: always select the entire text
7777        if (klass == InputType.TYPE_CLASS_NUMBER ||
7778                klass == InputType.TYPE_CLASS_PHONE ||
7779                klass == InputType.TYPE_CLASS_DATETIME ||
7780                variation == InputType.TYPE_TEXT_VARIATION_URI ||
7781                variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS ||
7782                variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS ||
7783                variation == InputType.TYPE_TEXT_VARIATION_FILTER) {
7784            return len > 0 ? packRangeInLong(0, len) : -1;
7785        }
7786
7787        int end = Math.min(offset, len);
7788        if (end < 0) {
7789            return -1;
7790        }
7791
7792        final int MAX_LENGTH = 48;
7793        int start = end;
7794
7795        for (; start > 0; start--) {
7796            final char c = mTransformed.charAt(start - 1);
7797            final int type = Character.getType(c);
7798            if (start == end && type == Character.OTHER_PUNCTUATION) {
7799                // Cases where the text ends with a '.' and we select from the end of the line
7800                // (right after the dot), or when we select from the space character in "aaa, bbb".
7801                continue;
7802            }
7803            if (type == Character.SURROGATE) { // Two Character codepoint
7804                end = start - 1; // Recheck as a pair when scanning forward
7805                continue;
7806            }
7807            if (!isWordCharacter(c, type)) break;
7808            if ((end - start) > MAX_LENGTH) return -1;
7809        }
7810
7811        for (; end < len; end++) {
7812            final int c = Character.codePointAt(mTransformed, end);
7813            final int type = Character.getType(c);
7814            if (!isWordCharacter(c, type)) break;
7815            if ((end - start) > MAX_LENGTH) return -1;
7816            if (c > 0xFFFF) { // Two Character codepoint
7817                end++;
7818            }
7819        }
7820
7821        if (start == end) {
7822            return -1;
7823        }
7824
7825        // Two ints packed in a long
7826        return packRangeInLong(start, end);
7827    }
7828
7829    private static long packRangeInLong(int start, int end) {
7830        return (((long) start) << 32) | end;
7831    }
7832
7833    private static int extractRangeStartFromLong(long range) {
7834        return (int) (range >>> 32);
7835    }
7836
7837    private static int extractRangeEndFromLong(long range) {
7838        return (int) (range & 0x00000000FFFFFFFFL);
7839    }
7840
7841    private void selectAll() {
7842        Selection.setSelection((Spannable) mText, 0, mText.length());
7843    }
7844
7845    private void selectCurrentWord() {
7846        if (!canSelectText()) {
7847            return;
7848        }
7849
7850        if (hasPasswordTransformationMethod()) {
7851            // Always select all on a password field.
7852            // Cut/copy menu entries are not available for passwords, but being able to select all
7853            // is however useful to delete or paste to replace the entire content.
7854            selectAll();
7855            return;
7856        }
7857
7858        long lastTouchOffsets = getLastTouchOffsets();
7859        final int minOffset = extractRangeStartFromLong(lastTouchOffsets);
7860        final int maxOffset = extractRangeEndFromLong(lastTouchOffsets);
7861
7862        int selectionStart, selectionEnd;
7863
7864        // If a URLSpan (web address, email, phone...) is found at that position, select it.
7865        URLSpan[] urlSpans = ((Spanned) mText).getSpans(minOffset, maxOffset, URLSpan.class);
7866        if (urlSpans.length == 1) {
7867            URLSpan url = urlSpans[0];
7868            selectionStart = ((Spanned) mText).getSpanStart(url);
7869            selectionEnd = ((Spanned) mText).getSpanEnd(url);
7870        } else {
7871            long wordLimits = getWordLimitsAt(minOffset);
7872            if (wordLimits >= 0) {
7873                selectionStart = extractRangeStartFromLong(wordLimits);
7874            } else {
7875                selectionStart = Math.max(minOffset - 5, 0);
7876            }
7877
7878            wordLimits = getWordLimitsAt(maxOffset);
7879            if (wordLimits >= 0) {
7880                selectionEnd = extractRangeEndFromLong(wordLimits);
7881            } else {
7882                selectionEnd = Math.min(maxOffset + 5, mText.length());
7883            }
7884        }
7885
7886        Selection.setSelection((Spannable) mText, selectionStart, selectionEnd);
7887    }
7888
7889    private long getLastTouchOffsets() {
7890        int minOffset, maxOffset;
7891
7892        if (mContextMenuTriggeredByKey) {
7893            minOffset = getSelectionStart();
7894            maxOffset = getSelectionEnd();
7895        } else {
7896            SelectionModifierCursorController selectionController = getSelectionController();
7897            minOffset = selectionController.getMinTouchOffset();
7898            maxOffset = selectionController.getMaxTouchOffset();
7899        }
7900
7901        return packRangeInLong(minOffset, maxOffset);
7902    }
7903
7904    @Override
7905    public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
7906        if (!isShown()) {
7907            return;
7908        }
7909
7910        final boolean isPassword = hasPasswordTransformationMethod();
7911
7912        if (!isPassword) {
7913            CharSequence text = getText();
7914            if (TextUtils.isEmpty(text)) {
7915                text = getHint();
7916            }
7917            if (!TextUtils.isEmpty(text)) {
7918                event.getText().add(text);
7919            }
7920        } else {
7921            event.setPassword(isPassword);
7922        }
7923    }
7924
7925    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
7926            int fromIndex, int removedCount, int addedCount) {
7927        AccessibilityEvent event =
7928            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
7929        event.setFromIndex(fromIndex);
7930        event.setRemovedCount(removedCount);
7931        event.setAddedCount(addedCount);
7932        event.setBeforeText(beforeText);
7933        sendAccessibilityEventUnchecked(event);
7934    }
7935
7936    @Override
7937    protected void onCreateContextMenu(ContextMenu menu) {
7938        super.onCreateContextMenu(menu);
7939        boolean added = false;
7940        mContextMenuTriggeredByKey = mDPadCenterIsDown || mEnterKeyIsDown;
7941        // Problem with context menu on long press: the menu appears while the key in down and when
7942        // the key is released, the view does not receive the key_up event.
7943        // We need two layers of flags: mDPadCenterIsDown and mEnterKeyIsDown are set in key down/up
7944        // events. We cannot simply clear these flags in onTextContextMenuItem since
7945        // it may not be called (if the user/ discards the context menu with the back key).
7946        // We clear these flags here and mContextMenuTriggeredByKey saves that state so that it is
7947        // available in onTextContextMenuItem.
7948        mDPadCenterIsDown = mEnterKeyIsDown = false;
7949
7950        MenuHandler handler = new MenuHandler();
7951
7952        if (mText instanceof Spanned && hasSelectionController()) {
7953            long lastTouchOffset = getLastTouchOffsets();
7954            final int selStart = extractRangeStartFromLong(lastTouchOffset);
7955            final int selEnd = extractRangeEndFromLong(lastTouchOffset);
7956
7957            URLSpan[] urls = ((Spanned) mText).getSpans(selStart, selEnd, URLSpan.class);
7958            if (urls.length > 0) {
7959                menu.add(0, ID_COPY_URL, 0, com.android.internal.R.string.copyUrl).
7960                        setOnMenuItemClickListener(handler);
7961
7962                added = true;
7963            }
7964        }
7965
7966        // The context menu is not empty, which will prevent the selection mode from starting.
7967        // Add a entry to start it in the context menu.
7968        // TODO Does not handle the case where a subclass does not call super.thisMethod or
7969        // populates the menu AFTER this call.
7970        if (menu.size() > 0) {
7971            menu.add(0, ID_SELECTION_MODE, 0, com.android.internal.R.string.selectTextMode).
7972                    setOnMenuItemClickListener(handler);
7973            added = true;
7974        }
7975
7976        if (added) {
7977            menu.setHeaderTitle(com.android.internal.R.string.editTextMenuTitle);
7978        }
7979    }
7980
7981    /**
7982     * Returns whether this text view is a current input method target.  The
7983     * default implementation just checks with {@link InputMethodManager}.
7984     */
7985    public boolean isInputMethodTarget() {
7986        InputMethodManager imm = InputMethodManager.peekInstance();
7987        return imm != null && imm.isActive(this);
7988    }
7989
7990    // Selection context mode
7991    private static final int ID_SELECT_ALL = android.R.id.selectAll;
7992    private static final int ID_CUT = android.R.id.cut;
7993    private static final int ID_COPY = android.R.id.copy;
7994    private static final int ID_PASTE = android.R.id.paste;
7995    // Context menu entries
7996    private static final int ID_COPY_URL = android.R.id.copyUrl;
7997    private static final int ID_SELECTION_MODE = android.R.id.selectTextMode;
7998
7999    private class MenuHandler implements MenuItem.OnMenuItemClickListener {
8000        public boolean onMenuItemClick(MenuItem item) {
8001            return onTextContextMenuItem(item.getItemId());
8002        }
8003    }
8004
8005    /**
8006     * Called when a context menu option for the text view is selected.  Currently
8007     * this will be {@link android.R.id#copyUrl}, {@link android.R.id#selectTextMode},
8008     * {@link android.R.id#selectAll}, {@link android.R.id#paste}, {@link android.R.id#cut}
8009     * or {@link android.R.id#copy}.
8010     */
8011    public boolean onTextContextMenuItem(int id) {
8012        int min = 0;
8013        int max = mText.length();
8014
8015        if (isFocused()) {
8016            final int selStart = getSelectionStart();
8017            final int selEnd = getSelectionEnd();
8018
8019            min = Math.max(0, Math.min(selStart, selEnd));
8020            max = Math.max(0, Math.max(selStart, selEnd));
8021        }
8022
8023        switch (id) {
8024            case ID_COPY_URL:
8025                URLSpan[] urls = ((Spanned) mText).getSpans(min, max, URLSpan.class);
8026                if (urls.length >= 1) {
8027                    ClipData clip = null;
8028                    for (int i=0; i<urls.length; i++) {
8029                        Uri uri = Uri.parse(urls[0].getURL());
8030                        if (clip == null) {
8031                            clip = ClipData.newRawUri(null, uri);
8032                        } else {
8033                            clip.addItem(new ClipData.Item(uri));
8034                        }
8035                    }
8036                    if (clip != null) {
8037                        setPrimaryClip(clip);
8038                    }
8039                }
8040                stopSelectionActionMode();
8041                return true;
8042
8043            case ID_SELECTION_MODE:
8044                if (mSelectionActionMode != null) {
8045                    // Selection mode is already started, simply change selected part.
8046                    selectCurrentWord();
8047                } else {
8048                    startSelectionActionMode();
8049                }
8050                return true;
8051
8052            case ID_SELECT_ALL:
8053                // This does not enter text selection mode. Text is highlighted, so that it can be
8054                // bulk edited, like selectAllOnFocus does.
8055                selectAll();
8056                return true;
8057
8058            case ID_PASTE:
8059                paste(min, max);
8060                return true;
8061
8062            case ID_CUT:
8063                setPrimaryClip(ClipData.newPlainText(null, mTransformed.subSequence(min, max)));
8064                ((Editable) mText).delete(min, max);
8065                stopSelectionActionMode();
8066                return true;
8067
8068            case ID_COPY:
8069                setPrimaryClip(ClipData.newPlainText(null, mTransformed.subSequence(min, max)));
8070                stopSelectionActionMode();
8071                return true;
8072        }
8073        return false;
8074    }
8075
8076    /**
8077     * Prepare text so that there are not zero or two spaces at beginning and end of region defined
8078     * by [min, max] when replacing this region by paste.
8079     * Note that if there were two spaces (or more) at that position before, they are kept. We just
8080     * make sure we do not add an extra one from the paste content.
8081     */
8082    private long prepareSpacesAroundPaste(int min, int max, CharSequence paste) {
8083        if (paste.length() > 0) {
8084            if (min > 0) {
8085                final char charBefore = mTransformed.charAt(min - 1);
8086                final char charAfter = paste.charAt(0);
8087
8088                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8089                    // Two spaces at beginning of paste: remove one
8090                    final int originalLength = mText.length();
8091                    ((Editable) mText).delete(min - 1, min);
8092                    // Due to filters, there is no guarantee that exactly one character was
8093                    // removed: count instead.
8094                    final int delta = mText.length() - originalLength;
8095                    min += delta;
8096                    max += delta;
8097                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8098                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8099                    // No space at beginning of paste: add one
8100                    final int originalLength = mText.length();
8101                    ((Editable) mText).replace(min, min, " ");
8102                    // Taking possible filters into account as above.
8103                    final int delta = mText.length() - originalLength;
8104                    min += delta;
8105                    max += delta;
8106                }
8107            }
8108
8109            if (max < mText.length()) {
8110                final char charBefore = paste.charAt(paste.length() - 1);
8111                final char charAfter = mTransformed.charAt(max);
8112
8113                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8114                    // Two spaces at end of paste: remove one
8115                    ((Editable) mText).delete(max, max + 1);
8116                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8117                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8118                    // No space at end of paste: add one
8119                    ((Editable) mText).replace(max, max, " ");
8120                }
8121            }
8122        }
8123
8124        return packRangeInLong(min, max);
8125    }
8126
8127    private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) {
8128        TextView shadowView = (TextView) inflate(mContext,
8129                com.android.internal.R.layout.text_drag_thumbnail, null);
8130
8131        if (shadowView == null) {
8132            throw new IllegalArgumentException("Unable to inflate text drag thumbnail");
8133        }
8134
8135        if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) {
8136            text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH);
8137        }
8138        shadowView.setText(text);
8139        shadowView.setTextColor(getTextColors());
8140
8141        shadowView.setTextAppearance(mContext, R.styleable.Theme_textAppearanceLarge);
8142        shadowView.setGravity(Gravity.CENTER);
8143
8144        shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
8145                ViewGroup.LayoutParams.WRAP_CONTENT));
8146
8147        final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
8148        shadowView.measure(size, size);
8149
8150        shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight());
8151        shadowView.invalidate();
8152        return new DragShadowBuilder(shadowView);
8153    }
8154
8155    private static class DragLocalState {
8156        public TextView sourceTextView;
8157        public int start, end;
8158
8159        public DragLocalState(TextView sourceTextView, int start, int end) {
8160            this.sourceTextView = sourceTextView;
8161            this.start = start;
8162            this.end = end;
8163        }
8164    }
8165
8166    @Override
8167    public boolean performLongClick() {
8168        if (super.performLongClick()) {
8169            mDiscardNextActionUp = true;
8170            return true;
8171        }
8172
8173        boolean handled = false;
8174
8175        // Long press in empty space moves cursor and shows the Paste affordance if available.
8176        if (!isPositionOnText(mLastDownPositionX, mLastDownPositionY) &&
8177                mInsertionControllerEnabled) {
8178            final int offset = getOffset(mLastDownPositionX, mLastDownPositionY);
8179            stopSelectionActionMode();
8180            Selection.setSelection((Spannable) mText, offset);
8181            getInsertionController().showWithPaste();
8182            handled = true;
8183        }
8184
8185        if (!handled && mSelectionActionMode != null) {
8186            if (touchPositionIsInSelection()) {
8187                // Start a drag
8188                final int start = getSelectionStart();
8189                final int end = getSelectionEnd();
8190                CharSequence selectedText = mTransformed.subSequence(start, end);
8191                ClipData data = ClipData.newPlainText(null, selectedText);
8192                DragLocalState localState = new DragLocalState(this, start, end);
8193                startDrag(data, getTextThumbnailBuilder(selectedText), localState, 0);
8194                stopSelectionActionMode();
8195            } else {
8196                selectCurrentWord();
8197            }
8198            handled = true;
8199        }
8200
8201        // Start a new selection
8202        handled |= !handled && startSelectionActionMode();
8203
8204        if (handled) {
8205            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
8206            mDiscardNextActionUp = true;
8207        }
8208
8209        return handled;
8210    }
8211
8212    private boolean touchPositionIsInSelection() {
8213        int selectionStart = getSelectionStart();
8214        int selectionEnd = getSelectionEnd();
8215
8216        if (selectionStart == selectionEnd) {
8217            return false;
8218        }
8219
8220        if (selectionStart > selectionEnd) {
8221            int tmp = selectionStart;
8222            selectionStart = selectionEnd;
8223            selectionEnd = tmp;
8224            Selection.setSelection((Spannable) mText, selectionStart, selectionEnd);
8225        }
8226
8227        SelectionModifierCursorController selectionController = getSelectionController();
8228        int minOffset = selectionController.getMinTouchOffset();
8229        int maxOffset = selectionController.getMaxTouchOffset();
8230
8231        return ((minOffset >= selectionStart) && (maxOffset < selectionEnd));
8232    }
8233
8234    private static class SuggestionRangeSpan extends UnderlineSpan {
8235        // TODO themable, would be nice to make it a child class of TextAppearanceSpan, but
8236        // there is no way to have underline and TextAppearanceSpan.
8237    }
8238
8239    private class SuggestionsPopupWindow implements OnClickListener {
8240        private static final int MAX_NUMBER_SUGGESTIONS = 5;
8241        private static final int NO_SUGGESTIONS = -1;
8242        private final PopupWindow mContainer;
8243        private final ViewGroup[] mSuggestionViews = new ViewGroup[2];
8244        private final int[] mSuggestionViewLayouts = new int[] {
8245                mTextEditSuggestionsBottomWindowLayout, mTextEditSuggestionsTopWindowLayout};
8246        private WordIterator mWordIterator;
8247        private TextAppearanceSpan[] mHighlightSpans = new TextAppearanceSpan[0];
8248
8249        public SuggestionsPopupWindow() {
8250            mContainer = new PopupWindow(TextView.this.mContext, null,
8251                    com.android.internal.R.attr.textSuggestionsWindowStyle);
8252            mContainer.setSplitTouchEnabled(true);
8253            mContainer.setClippingEnabled(false);
8254            mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL);
8255
8256            mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
8257            mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
8258        }
8259
8260        private class SuggestionInfo {
8261            int suggestionStart, suggestionEnd; // range of suggestion item with replacement text
8262            int spanStart, spanEnd; // range in TextView where text should be inserted
8263        }
8264
8265        private ViewGroup getViewGroup(boolean under) {
8266            final int viewIndex = under ? 0 : 1;
8267            ViewGroup viewGroup = mSuggestionViews[viewIndex];
8268
8269            if (viewGroup == null) {
8270                final int layout = mSuggestionViewLayouts[viewIndex];
8271                LayoutInflater inflater = (LayoutInflater) TextView.this.mContext.
8272                        getSystemService(Context.LAYOUT_INFLATER_SERVICE);
8273
8274                if (inflater == null) {
8275                    throw new IllegalArgumentException(
8276                            "Unable to create TextEdit suggestion window inflater");
8277                }
8278
8279                View view = inflater.inflate(layout, null);
8280
8281                if (! (view instanceof ViewGroup)) {
8282                    throw new IllegalArgumentException(
8283                            "Inflated TextEdit suggestion window is not a ViewGroup: " + view);
8284                }
8285
8286                viewGroup = (ViewGroup) view;
8287
8288                // Inflate the suggestion items once and for all.
8289                for (int i = 0; i < MAX_NUMBER_SUGGESTIONS; i++) {
8290                    View childView = inflater.inflate(mTextEditSuggestionItemLayout, viewGroup,
8291                            false);
8292
8293                    if (! (childView instanceof TextView)) {
8294                        throw new IllegalArgumentException(
8295                               "Inflated TextEdit suggestion item is not a TextView: " + childView);
8296                    }
8297
8298                    childView.setTag(new SuggestionInfo());
8299                    viewGroup.addView(childView);
8300                    childView.setOnClickListener(this);
8301                }
8302
8303                mSuggestionViews[viewIndex] = viewGroup;
8304            }
8305
8306            return viewGroup;
8307        }
8308
8309        public void show() {
8310            if (!(mText instanceof Editable)) return;
8311
8312            final int pos = TextView.this.getSelectionStart();
8313            Spannable spannable = (Spannable)TextView.this.mText;
8314            SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class);
8315            final int nbSpans = suggestionSpans.length;
8316
8317            ViewGroup viewGroup = getViewGroup(true);
8318            mContainer.setContentView(viewGroup);
8319
8320            int totalNbSuggestions = 0;
8321            int spanUnionStart = mText.length();
8322            int spanUnionEnd = 0;
8323
8324            for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) {
8325                SuggestionSpan suggestionSpan = suggestionSpans[spanIndex];
8326                final int spanStart = spannable.getSpanStart(suggestionSpan);
8327                final int spanEnd = spannable.getSpanEnd(suggestionSpan);
8328                spanUnionStart = Math.min(spanStart, spanUnionStart);
8329                spanUnionEnd = Math.max(spanEnd, spanUnionEnd);
8330
8331                String[] suggestions = suggestionSpan.getSuggestions();
8332                int nbSuggestions = suggestions.length;
8333                for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) {
8334                    TextView textView = (TextView) viewGroup.getChildAt(totalNbSuggestions);
8335                    textView.setText(suggestions[suggestionIndex]);
8336                    SuggestionInfo suggestionInfo = (SuggestionInfo) textView.getTag();
8337                    suggestionInfo.spanStart = spanStart;
8338                    suggestionInfo.spanEnd = spanEnd;
8339
8340                    totalNbSuggestions++;
8341                    if (totalNbSuggestions > MAX_NUMBER_SUGGESTIONS) {
8342                        // Also end outer for loop
8343                        spanIndex = nbSpans;
8344                        break;
8345                    }
8346                }
8347            }
8348
8349            if (totalNbSuggestions == 0) {
8350                // TODO Replace by final text, use a dedicated layout, add a fade out timer...
8351                TextView textView = (TextView) viewGroup.getChildAt(0);
8352                textView.setText("No suggestions available");
8353                SuggestionInfo suggestionInfo = (SuggestionInfo) textView.getTag();
8354                suggestionInfo.spanStart = NO_SUGGESTIONS;
8355                totalNbSuggestions++;
8356            } else {
8357                if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan();
8358                ((Editable) mText).setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd,
8359                        Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
8360
8361                for (int i = 0; i < totalNbSuggestions; i++) {
8362                    final TextView textView = (TextView) viewGroup.getChildAt(i);
8363                    highlightTextDifferences(textView, spanUnionStart, spanUnionEnd);
8364                }
8365            }
8366
8367            for (int i = 0; i < MAX_NUMBER_SUGGESTIONS; i++) {
8368                viewGroup.getChildAt(i).setVisibility(i < totalNbSuggestions ? VISIBLE : GONE);
8369            }
8370
8371            final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
8372            viewGroup.measure(size, size);
8373
8374            positionAtCursor();
8375        }
8376
8377        private long[] getWordLimits(CharSequence text) {
8378            if (mWordIterator == null) mWordIterator = new WordIterator(); // TODO locale
8379            mWordIterator.setCharSequence(text);
8380
8381            // First pass will simply count the number of words to be able to create an array
8382            // Not too expensive since previous break positions are cached by the BreakIterator
8383            int nbWords = 0;
8384            int position = mWordIterator.following(0);
8385            while (position != BreakIterator.DONE) {
8386                nbWords++;
8387                position = mWordIterator.following(position);
8388            }
8389
8390            int index = 0;
8391            long[] result = new long[nbWords];
8392
8393            position = mWordIterator.following(0);
8394            while (position != BreakIterator.DONE) {
8395                int wordStart = mWordIterator.getBeginning(position);
8396                result[index++] = packRangeInLong(wordStart, position);
8397                position = mWordIterator.following(position);
8398            }
8399
8400            return result;
8401        }
8402
8403        private TextAppearanceSpan highlightSpan(int index) {
8404            final int length = mHighlightSpans.length;
8405            if (index < length) {
8406                return mHighlightSpans[index];
8407            }
8408
8409            // Assumes indexes are requested in sequence: simply append one more item
8410            TextAppearanceSpan[] newArray = new TextAppearanceSpan[length + 1];
8411            System.arraycopy(mHighlightSpans, 0, newArray, 0, length);
8412            TextAppearanceSpan highlightSpan = new TextAppearanceSpan(mContext,
8413                    android.R.style.TextAppearance_SuggestionHighlight);
8414            newArray[length] = highlightSpan;
8415            mHighlightSpans = newArray;
8416            return highlightSpan;
8417        }
8418
8419        private void highlightTextDifferences(TextView textView, int unionStart, int unionEnd) {
8420            SuggestionInfo suggestionInfo = (SuggestionInfo) textView.getTag();
8421            final int spanStart = suggestionInfo.spanStart;
8422            final int spanEnd = suggestionInfo.spanEnd;
8423
8424            // Remove all text formating by converting to Strings
8425            final String text = textView.getText().toString();
8426            final String sourceText = mText.subSequence(spanStart, spanEnd).toString();
8427
8428            long[] sourceWordLimits = getWordLimits(sourceText);
8429            long[] wordLimits = getWordLimits(text);
8430
8431            SpannableStringBuilder ssb = new SpannableStringBuilder();
8432            // span [spanStart, spanEnd] is included in union [spanUnionStart, int spanUnionEnd]
8433            // The final result is made of 3 parts: the text before, between and after the span
8434            // This is the text before, provided for context
8435            ssb.append(mText.subSequence(unionStart, spanStart).toString());
8436
8437            // shift is used to offset spans positions wrt span's beginning
8438            final int shift = spanStart - unionStart;
8439            suggestionInfo.suggestionStart = shift;
8440            suggestionInfo.suggestionEnd = shift + text.length();
8441
8442            // This is the actual suggestion text, which will be highlighted by the following code
8443            ssb.append(text);
8444
8445            String[] words = new String[wordLimits.length];
8446            for (int i = 0; i < wordLimits.length; i++) {
8447                int wordStart = extractRangeStartFromLong(wordLimits[i]);
8448                int wordEnd = extractRangeEndFromLong(wordLimits[i]);
8449                words[i] = text.substring(wordStart, wordEnd);
8450            }
8451
8452            // Highlighted word algorithm is bases on word matching between source and text
8453            // Matching words are found from left to right. TODO: change for RTL languages
8454            // Characters between matching words are highlighted
8455            int previousCommonWordIndex = -1;
8456            int nbHighlightSpans = 0;
8457            for (int i = 0; i < sourceWordLimits.length; i++) {
8458                int wordStart = extractRangeStartFromLong(sourceWordLimits[i]);
8459                int wordEnd = extractRangeEndFromLong(sourceWordLimits[i]);
8460                String sourceWord = sourceText.substring(wordStart, wordEnd);
8461
8462                for (int j = previousCommonWordIndex + 1; j < words.length; j++) {
8463                    if (sourceWord.equals(words[j])) {
8464                        if (j != previousCommonWordIndex + 1) {
8465                            int firstDifferentPosition = previousCommonWordIndex < 0 ? 0 :
8466                                extractRangeEndFromLong(wordLimits[previousCommonWordIndex]);
8467                            int lastDifferentPosition = extractRangeStartFromLong(wordLimits[j]);
8468                            ssb.setSpan(highlightSpan(nbHighlightSpans++),
8469                                    shift + firstDifferentPosition, shift + lastDifferentPosition,
8470                                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
8471                        } else {
8472                            // Compare characters between words
8473                            int previousSourceWordEnd = i == 0 ? 0 :
8474                                extractRangeEndFromLong(sourceWordLimits[i - 1]);
8475                            int sourceWordStart = extractRangeStartFromLong(sourceWordLimits[i]);
8476                            String sourceSpaces = sourceText.substring(previousSourceWordEnd,
8477                                    sourceWordStart);
8478
8479                            int previousWordEnd = j == 0 ? 0 :
8480                                extractRangeEndFromLong(wordLimits[j - 1]);
8481                            int currentWordStart = extractRangeStartFromLong(wordLimits[j]);
8482                            String textSpaces = text.substring(previousWordEnd, currentWordStart);
8483
8484                            if (!sourceSpaces.equals(textSpaces)) {
8485                                ssb.setSpan(highlightSpan(nbHighlightSpans++),
8486                                        shift + previousWordEnd, shift + currentWordStart,
8487                                        Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
8488                            }
8489                        }
8490                        previousCommonWordIndex = j;
8491                        break;
8492                    }
8493                }
8494            }
8495
8496            // Finally, compare ends of Strings
8497            if (previousCommonWordIndex < words.length - 1) {
8498                int firstDifferentPosition = previousCommonWordIndex < 0 ? 0 :
8499                    extractRangeEndFromLong(wordLimits[previousCommonWordIndex]);
8500                int lastDifferentPosition = textView.length();
8501                ssb.setSpan(highlightSpan(nbHighlightSpans++),
8502                        shift + firstDifferentPosition, shift + lastDifferentPosition,
8503                        Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
8504            } else {
8505                int lastSourceWordEnd = sourceWordLimits.length == 0 ? 0 :
8506                    extractRangeEndFromLong(sourceWordLimits[sourceWordLimits.length - 1]);
8507                String sourceSpaces = sourceText.substring(lastSourceWordEnd, sourceText.length());
8508
8509                int lastCommonTextWordEnd = previousCommonWordIndex < 0 ? 0 :
8510                    extractRangeEndFromLong(wordLimits[previousCommonWordIndex]);
8511                String textSpaces = text.substring(lastCommonTextWordEnd, textView.length());
8512
8513                if (!sourceSpaces.equals(textSpaces) && textSpaces.length() > 0) {
8514                    ssb.setSpan(highlightSpan(nbHighlightSpans++),
8515                            shift + lastCommonTextWordEnd, shift + textView.length(),
8516                            Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
8517                }
8518            }
8519
8520            // Final part, text after the current suggestion range.
8521            ssb.append(mText.subSequence(spanEnd, unionEnd).toString());
8522            textView.setText(ssb);
8523        }
8524
8525        public void hide() {
8526            if ((mText instanceof Editable) && mSuggestionRangeSpan != null) {
8527                ((Editable) mText).removeSpan(mSuggestionRangeSpan);
8528            }
8529            mContainer.dismiss();
8530        }
8531
8532        @Override
8533        public void onClick(View view) {
8534            if (view instanceof TextView) {
8535                TextView textView = (TextView) view;
8536                SuggestionInfo suggestionInfo = (SuggestionInfo) textView.getTag();
8537                final int spanStart = suggestionInfo.spanStart;
8538                final int spanEnd = suggestionInfo.spanEnd;
8539                if (spanStart != NO_SUGGESTIONS) {
8540                    final int suggestionStart = suggestionInfo.suggestionStart;
8541                    final int suggestionEnd = suggestionInfo.suggestionEnd;
8542                    final String suggestion = textView.getText().subSequence(
8543                            suggestionStart, suggestionEnd).toString();
8544                    ((Editable) mText).replace(spanStart, spanEnd, suggestion);
8545                }
8546            }
8547            hide();
8548        }
8549
8550        void positionAtCursor() {
8551            View contentView = mContainer.getContentView();
8552            int width = contentView.getMeasuredWidth();
8553            int height = contentView.getMeasuredHeight();
8554            final int offset = TextView.this.getSelectionStart();
8555            final int line = mLayout.getLineForOffset(offset);
8556            final int lineBottom = mLayout.getLineBottom(line);
8557            float primaryHorizontal = mLayout.getPrimaryHorizontal(offset);
8558
8559            final Rect bounds = sCursorControllerTempRect;
8560            bounds.left = (int) (primaryHorizontal - width / 2.0f);
8561            bounds.top = lineBottom;
8562
8563            bounds.right = bounds.left + width;
8564            bounds.bottom = bounds.top + height;
8565
8566            convertFromViewportToContentCoordinates(bounds);
8567
8568            final int[] coords = mTempCoords;
8569            TextView.this.getLocationInWindow(coords);
8570            coords[0] += bounds.left;
8571            coords[1] += bounds.top;
8572
8573            final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
8574            final int screenHeight = displayMetrics.heightPixels;
8575
8576            // Vertical clipping
8577            if (coords[1] + height > screenHeight) {
8578                // Try to position above current line instead
8579                // TODO use top layout instead, reverse suggestion order,
8580                // try full screen vertical down if it still does not fit. TBD with designers.
8581
8582                // Update dimensions from new view
8583                contentView = mContainer.getContentView();
8584                width = contentView.getMeasuredWidth();
8585                height = contentView.getMeasuredHeight();
8586
8587                final int lineTop = mLayout.getLineTop(line);
8588                final int lineHeight = lineBottom - lineTop;
8589                coords[1] -= height + lineHeight;
8590            }
8591
8592            // Horizontal clipping
8593            coords[0] = Math.max(0, coords[0]);
8594            coords[0] = Math.min(displayMetrics.widthPixels - width, coords[0]);
8595
8596            mContainer.showAtLocation(TextView.this, Gravity.NO_GRAVITY, coords[0], coords[1]);
8597        }
8598    }
8599
8600    void showSuggestions() {
8601        if (mSuggestionsPopupWindow == null) {
8602            mSuggestionsPopupWindow = new SuggestionsPopupWindow();
8603        }
8604        hideControllers();
8605        mSuggestionsPopupWindow.show();
8606    }
8607
8608    void hideSuggestions() {
8609        if (mSuggestionsPopupWindow != null) {
8610            mSuggestionsPopupWindow.hide();
8611        }
8612    }
8613
8614    /**
8615     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
8616     * selection is initiated in this View.
8617     *
8618     * The standard implementation populates the menu with a subset of Select All, Cut, Copy and
8619     * Paste actions, depending on what this View supports.
8620     *
8621     * A custom implementation can add new entries in the default menu in its
8622     * {@link ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The default actions
8623     * can also be removed from the menu using {@link Menu#removeItem(int)} and passing
8624     * {@link android.R.id#selectAll}, {@link android.R.id#cut}, {@link android.R.id#copy} or
8625     * {@link android.R.id#paste} ids as parameters.
8626     *
8627     * Returning false from {@link ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will
8628     * prevent the action mode from being started.
8629     *
8630     * Action click events should be handled by the custom implementation of
8631     * {@link ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
8632     *
8633     * Note that text selection mode is not started when a TextView receives focus and the
8634     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
8635     * that case, to allow for quick replacement.
8636     */
8637    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
8638        mCustomSelectionActionModeCallback = actionModeCallback;
8639    }
8640
8641    /**
8642     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
8643     *
8644     * @return The current custom selection callback.
8645     */
8646    public ActionMode.Callback getCustomSelectionActionModeCallback() {
8647        return mCustomSelectionActionModeCallback;
8648    }
8649
8650    /**
8651     *
8652     * @return true if the selection mode was actually started.
8653     */
8654    private boolean startSelectionActionMode() {
8655        if (mSelectionActionMode != null) {
8656            // Selection action mode is already started
8657            return false;
8658        }
8659
8660        if (!canSelectText() || !requestFocus()) {
8661            Log.w(LOG_TAG, "TextView does not support text selection. Action mode cancelled.");
8662            return false;
8663        }
8664
8665        if (!hasSelection()) {
8666            // If selection mode is started after a device rotation, there is already a selection.
8667            selectCurrentWord();
8668        }
8669
8670        ActionMode.Callback actionModeCallback = new SelectionActionModeCallback();
8671        mSelectionActionMode = startActionMode(actionModeCallback);
8672        final boolean selectionStarted = mSelectionActionMode != null;
8673
8674        if (selectionStarted && !mTextIsSelectable) {
8675            // Show the IME to be able to replace text, except when selecting non editable text.
8676            final InputMethodManager imm = InputMethodManager.peekInstance();
8677            if (imm != null) imm.showSoftInput(this, 0, null);
8678        }
8679
8680        return selectionStarted;
8681    }
8682
8683    private void stopSelectionActionMode() {
8684        if (mSelectionActionMode != null) {
8685            // This will hide the mSelectionModifierCursorController
8686            mSelectionActionMode.finish();
8687        }
8688    }
8689
8690    /**
8691     * Paste clipboard content between min and max positions.
8692     */
8693    private void paste(int min, int max) {
8694        ClipboardManager clipboard =
8695            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
8696        ClipData clip = clipboard.getPrimaryClip();
8697        if (clip != null) {
8698            boolean didFirst = false;
8699            for (int i=0; i<clip.getItemCount(); i++) {
8700                CharSequence paste = clip.getItemAt(i).coerceToText(getContext());
8701                if (paste != null) {
8702                    if (!didFirst) {
8703                        long minMax = prepareSpacesAroundPaste(min, max, paste);
8704                        min = extractRangeStartFromLong(minMax);
8705                        max = extractRangeEndFromLong(minMax);
8706                        Selection.setSelection((Spannable) mText, max);
8707                        ((Editable) mText).replace(min, max, paste);
8708                        didFirst = true;
8709                    } else {
8710                        ((Editable) mText).insert(getSelectionEnd(), "\n");
8711                        ((Editable) mText).insert(getSelectionEnd(), paste);
8712                    }
8713                }
8714            }
8715            stopSelectionActionMode();
8716            sLastCutOrCopyTime = 0;
8717        }
8718    }
8719
8720    private void setPrimaryClip(ClipData clip) {
8721        ClipboardManager clipboard = (ClipboardManager) getContext().
8722                getSystemService(Context.CLIPBOARD_SERVICE);
8723        clipboard.setPrimaryClip(clip);
8724        sLastCutOrCopyTime = SystemClock.uptimeMillis();
8725    }
8726
8727    /**
8728     * An ActionMode Callback class that is used to provide actions while in text selection mode.
8729     *
8730     * The default callback provides a subset of Select All, Cut, Copy and Paste actions, depending
8731     * on which of these this TextView supports.
8732     */
8733    private class SelectionActionModeCallback implements ActionMode.Callback {
8734
8735        @Override
8736        public boolean onCreateActionMode(ActionMode mode, Menu menu) {
8737            TypedArray styledAttributes = mContext.obtainStyledAttributes(R.styleable.Theme);
8738
8739            mode.setTitle(mContext.getString(com.android.internal.R.string.textSelectionCABTitle));
8740            mode.setSubtitle(null);
8741
8742            menu.add(0, ID_SELECT_ALL, 0, com.android.internal.R.string.selectAll).
8743                    setAlphabeticShortcut('a').
8744                    setShowAsAction(
8745                            MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
8746
8747            if (canCut()) {
8748                menu.add(0, ID_CUT, 0, com.android.internal.R.string.cut).
8749                    setIcon(styledAttributes.getResourceId(
8750                            R.styleable.Theme_actionModeCutDrawable, 0)).
8751                    setAlphabeticShortcut('x').
8752                    setShowAsAction(
8753                            MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
8754            }
8755
8756            if (canCopy()) {
8757                menu.add(0, ID_COPY, 0, com.android.internal.R.string.copy).
8758                    setIcon(styledAttributes.getResourceId(
8759                            R.styleable.Theme_actionModeCopyDrawable, 0)).
8760                    setAlphabeticShortcut('c').
8761                    setShowAsAction(
8762                            MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
8763            }
8764
8765            if (canPaste()) {
8766                menu.add(0, ID_PASTE, 0, com.android.internal.R.string.paste).
8767                        setIcon(styledAttributes.getResourceId(
8768                                R.styleable.Theme_actionModePasteDrawable, 0)).
8769                        setAlphabeticShortcut('v').
8770                        setShowAsAction(
8771                                MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
8772            }
8773
8774            styledAttributes.recycle();
8775
8776            if (mCustomSelectionActionModeCallback != null) {
8777                if (!mCustomSelectionActionModeCallback.onCreateActionMode(mode, menu)) {
8778                    // The custom mode can choose to cancel the action mode
8779                    return false;
8780                }
8781            }
8782
8783            if (menu.hasVisibleItems() || mode.getCustomView() != null) {
8784                getSelectionController().show();
8785                return true;
8786            } else {
8787                return false;
8788            }
8789        }
8790
8791        @Override
8792        public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
8793            if (mCustomSelectionActionModeCallback != null) {
8794                return mCustomSelectionActionModeCallback.onPrepareActionMode(mode, menu);
8795            }
8796            return true;
8797        }
8798
8799        @Override
8800        public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
8801            if (mCustomSelectionActionModeCallback != null &&
8802                 mCustomSelectionActionModeCallback.onActionItemClicked(mode, item)) {
8803                return true;
8804            }
8805            return onTextContextMenuItem(item.getItemId());
8806        }
8807
8808        @Override
8809        public void onDestroyActionMode(ActionMode mode) {
8810            if (mCustomSelectionActionModeCallback != null) {
8811                mCustomSelectionActionModeCallback.onDestroyActionMode(mode);
8812            }
8813            Selection.setSelection((Spannable) mText, getSelectionEnd());
8814
8815            if (mSelectionModifierCursorController != null) {
8816                mSelectionModifierCursorController.hide();
8817            }
8818
8819            mSelectionActionMode = null;
8820        }
8821    }
8822
8823    private class PastePopupWindow implements OnClickListener {
8824        private final PopupWindow mContainer;
8825        private final View[] mPasteViews = new View[4];
8826        private final int[] mPasteViewLayouts = new int[] {
8827                mTextEditPasteWindowLayout,  mTextEditNoPasteWindowLayout,
8828                mTextEditSidePasteWindowLayout, mTextEditSideNoPasteWindowLayout };
8829
8830        public PastePopupWindow() {
8831            mContainer = new PopupWindow(TextView.this.mContext, null,
8832                    com.android.internal.R.attr.textSelectHandleWindowStyle);
8833            mContainer.setSplitTouchEnabled(true);
8834            mContainer.setClippingEnabled(false);
8835            mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL);
8836
8837            mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
8838            mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
8839        }
8840
8841        private int viewIndex(boolean onTop) {
8842            return (onTop ? 0 : 1<<1) + (canPaste() ? 0 : 1<<0);
8843        }
8844
8845        private void updateContent(boolean onTop) {
8846            final int viewIndex = viewIndex(onTop);
8847            View view = mPasteViews[viewIndex];
8848
8849            if (view == null) {
8850                final int layout = mPasteViewLayouts[viewIndex];
8851                LayoutInflater inflater = (LayoutInflater)TextView.this.mContext.
8852                    getSystemService(Context.LAYOUT_INFLATER_SERVICE);
8853                if (inflater != null) {
8854                    view = inflater.inflate(layout, null);
8855                }
8856
8857                if (view == null) {
8858                    throw new IllegalArgumentException("Unable to inflate TextEdit paste window");
8859                }
8860
8861                final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
8862                view.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
8863                        ViewGroup.LayoutParams.WRAP_CONTENT));
8864                view.measure(size, size);
8865
8866                view.setOnClickListener(this);
8867
8868                mPasteViews[viewIndex] = view;
8869            }
8870
8871            mContainer.setContentView(view);
8872        }
8873
8874        public void show() {
8875            updateContent(true);
8876            positionAtCursor();
8877        }
8878
8879        public void hide() {
8880            mContainer.dismiss();
8881        }
8882
8883        public boolean isShowing() {
8884            return mContainer.isShowing();
8885        }
8886
8887        @Override
8888        public void onClick(View v) {
8889            if (canPaste()) {
8890                paste(getSelectionStart(), getSelectionEnd());
8891            }
8892            hide();
8893        }
8894
8895        void positionAtCursor() {
8896            View contentView = mContainer.getContentView();
8897            int width = contentView.getMeasuredWidth();
8898            int height = contentView.getMeasuredHeight();
8899            final int offset = TextView.this.getSelectionStart();
8900            final int line = mLayout.getLineForOffset(offset);
8901            final int lineTop = mLayout.getLineTop(line);
8902            float primaryHorizontal = mLayout.getPrimaryHorizontal(offset);
8903
8904            final Rect bounds = sCursorControllerTempRect;
8905            bounds.left = (int) (primaryHorizontal - width / 2.0f);
8906            bounds.top = lineTop - height;
8907
8908            bounds.right = bounds.left + width;
8909            bounds.bottom = bounds.top + height;
8910
8911            convertFromViewportToContentCoordinates(bounds);
8912
8913            final int[] coords = mTempCoords;
8914            TextView.this.getLocationInWindow(coords);
8915            coords[0] += bounds.left;
8916            coords[1] += bounds.top;
8917
8918            final int screenWidth = mContext.getResources().getDisplayMetrics().widthPixels;
8919            if (coords[1] < 0) {
8920                updateContent(false);
8921                // Update dimensions from new view
8922                contentView = mContainer.getContentView();
8923                width = contentView.getMeasuredWidth();
8924                height = contentView.getMeasuredHeight();
8925
8926                // Vertical clipping, move under edited line and to the side of insertion cursor
8927                // TODO bottom clipping in case there is no system bar
8928                coords[1] += height;
8929                final int lineBottom = mLayout.getLineBottom(line);
8930                final int lineHeight = lineBottom - lineTop;
8931                coords[1] += lineHeight;
8932
8933                // Move to right hand side of insertion cursor by default. TODO RTL text.
8934                final Drawable handle = mContext.getResources().getDrawable(mTextSelectHandleRes);
8935                final int handleHalfWidth = handle.getIntrinsicWidth() / 2;
8936
8937                if (primaryHorizontal + handleHalfWidth + width < screenWidth) {
8938                    coords[0] += handleHalfWidth + width / 2;
8939                } else {
8940                    coords[0] -= handleHalfWidth + width / 2;
8941                }
8942            } else {
8943                // Horizontal clipping
8944                coords[0] = Math.max(0, coords[0]);
8945                coords[0] = Math.min(screenWidth - width, coords[0]);
8946            }
8947
8948            mContainer.showAtLocation(TextView.this, Gravity.NO_GRAVITY, coords[0], coords[1]);
8949        }
8950    }
8951
8952    private abstract class HandleView extends View implements ViewTreeObserver.OnPreDrawListener {
8953        protected Drawable mDrawable;
8954        private final PopupWindow mContainer;
8955        // Position with respect to the parent TextView
8956        private int mPositionX, mPositionY;
8957        private boolean mIsDragging;
8958        // Offset from touch position to mPosition
8959        private float mTouchToWindowOffsetX, mTouchToWindowOffsetY;
8960        protected float mHotspotX;
8961        // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up
8962        private float mTouchOffsetY;
8963        // Where the touch position should be on the handle to ensure a maximum cursor visibility
8964        private float mIdealVerticalOffset;
8965        // Parent's (TextView) previous position in window
8966        private int mLastParentX, mLastParentY;
8967        // PopupWindow container absolute position with respect to the enclosing window
8968        private int mContainerPositionX, mContainerPositionY;
8969        // Visible or not (scrolled off screen), whether or not this handle should be visible
8970        private boolean mIsActive = false;
8971
8972        public HandleView() {
8973            super(TextView.this.mContext);
8974            mContainer = new PopupWindow(TextView.this.mContext, null,
8975                    com.android.internal.R.attr.textSelectHandleWindowStyle);
8976            mContainer.setSplitTouchEnabled(true);
8977            mContainer.setClippingEnabled(false);
8978            mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL);
8979            mContainer.setContentView(this);
8980
8981            initDrawable();
8982
8983            final int handleHeight = mDrawable.getIntrinsicHeight();
8984            mTouchOffsetY = -0.3f * handleHeight;
8985            mIdealVerticalOffset = 0.7f * handleHeight;
8986        }
8987
8988        protected abstract void initDrawable();
8989
8990        // Touch-up filter: number of previous positions remembered
8991        private static final int HISTORY_SIZE = 5;
8992        private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150;
8993        private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350;
8994        private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE];
8995        private final int[] mPreviousOffsets = new int[HISTORY_SIZE];
8996        private int mPreviousOffsetIndex = 0;
8997        private int mNumberPreviousOffsets = 0;
8998
8999        private void startTouchUpFilter(int offset) {
9000            mNumberPreviousOffsets = 0;
9001            addPositionToTouchUpFilter(offset);
9002        }
9003
9004        private void addPositionToTouchUpFilter(int offset) {
9005            if (mNumberPreviousOffsets > 0 &&
9006                    mPreviousOffsets[mPreviousOffsetIndex] == offset) {
9007                // Make sure only actual changes of position are recorded.
9008                return;
9009            }
9010
9011            mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE;
9012            mPreviousOffsets[mPreviousOffsetIndex] = offset;
9013            mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis();
9014            mNumberPreviousOffsets++;
9015        }
9016
9017        private void filterOnTouchUp() {
9018            final long now = SystemClock.uptimeMillis();
9019            int i = 0;
9020            int index = mPreviousOffsetIndex;
9021            final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE);
9022            while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) {
9023                i++;
9024                index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE;
9025            }
9026
9027            if (i > 0 && i < iMax &&
9028                    (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) {
9029                updateOffset(mPreviousOffsets[index]);
9030            }
9031        }
9032
9033        @Override
9034        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
9035            setMeasuredDimension(mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight());
9036        }
9037
9038        public void show() {
9039            if (isShowing()) {
9040                mContainer.update(mContainerPositionX, mContainerPositionY,
9041                        mRight - mLeft, mBottom - mTop);
9042            } else {
9043                mContainer.showAtLocation(TextView.this, 0,
9044                        mContainerPositionX, mContainerPositionY);
9045
9046                mIsActive = true;
9047
9048                ViewTreeObserver vto = TextView.this.getViewTreeObserver();
9049                vto.addOnPreDrawListener(this);
9050            }
9051        }
9052
9053        protected void dismiss() {
9054            mIsDragging = false;
9055            mContainer.dismiss();
9056        }
9057
9058        public void hide() {
9059            dismiss();
9060
9061            mIsActive = false;
9062
9063            ViewTreeObserver vto = TextView.this.getViewTreeObserver();
9064            vto.removeOnPreDrawListener(this);
9065        }
9066
9067        public boolean isShowing() {
9068            return mContainer.isShowing();
9069        }
9070
9071        private boolean isPositionVisible() {
9072            // Always show a dragging handle.
9073            if (mIsDragging) {
9074                return true;
9075            }
9076
9077            if (isInBatchEditMode()) {
9078                return false;
9079            }
9080
9081            final int extendedPaddingTop = getExtendedPaddingTop();
9082            final int extendedPaddingBottom = getExtendedPaddingBottom();
9083            final int compoundPaddingLeft = getCompoundPaddingLeft();
9084            final int compoundPaddingRight = getCompoundPaddingRight();
9085
9086            final TextView textView = TextView.this;
9087
9088            if (mTempRect == null) mTempRect = new Rect();
9089            final Rect clip = mTempRect;
9090            clip.left = compoundPaddingLeft;
9091            clip.top = extendedPaddingTop;
9092            clip.right = textView.getWidth() - compoundPaddingRight;
9093            clip.bottom = textView.getHeight() - extendedPaddingBottom;
9094
9095            final ViewParent parent = textView.getParent();
9096            if (parent == null || !parent.getChildVisibleRect(textView, clip, null)) {
9097                return false;
9098            }
9099
9100            final int[] coords = mTempCoords;
9101            textView.getLocationInWindow(coords);
9102            final int posX = coords[0] + mPositionX + (int) mHotspotX;
9103            final int posY = coords[1] + mPositionY;
9104
9105            // Offset by 1 to take into account 0.5 and int rounding around getPrimaryHorizontal.
9106            return posX >= clip.left - 1 && posX <= clip.right + 1 &&
9107                    posY >= clip.top && posY <= clip.bottom;
9108        }
9109
9110        public abstract int getCurrentCursorOffset();
9111
9112        public abstract void updateOffset(int offset);
9113
9114        public abstract void updatePosition(int x, int y);
9115
9116        protected void positionAtCursorOffset(int offset) {
9117            addPositionToTouchUpFilter(offset);
9118            final int line = mLayout.getLineForOffset(offset);
9119            final int lineBottom = mLayout.getLineBottom(line);
9120
9121            mPositionX = (int) (mLayout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX);
9122            mPositionY = lineBottom;
9123
9124            // Take TextView's padding into account.
9125            mPositionX += viewportToContentHorizontalOffset();
9126            mPositionY += viewportToContentVerticalOffset();
9127        }
9128
9129        protected boolean updateContainerPosition() {
9130            positionAtCursorOffset(getCurrentCursorOffset());
9131
9132            final int previousContainerPositionX = mContainerPositionX;
9133            final int previousContainerPositionY = mContainerPositionY;
9134
9135            TextView.this.getLocationInWindow(mTempCoords);
9136            mContainerPositionX = mTempCoords[0] + mPositionX;
9137            mContainerPositionY = mTempCoords[1] + mPositionY;
9138
9139            return (previousContainerPositionX != mContainerPositionX ||
9140                    previousContainerPositionY != mContainerPositionY);
9141        }
9142
9143        public boolean onPreDraw() {
9144            if (updateContainerPosition()) {
9145                if (mIsDragging) {
9146                    if (mTempCoords[0] != mLastParentX || mTempCoords[1] != mLastParentY) {
9147                        mTouchToWindowOffsetX += mTempCoords[0] - mLastParentX;
9148                        mTouchToWindowOffsetY += mTempCoords[1] - mLastParentY;
9149                        mLastParentX = mTempCoords[0];
9150                        mLastParentY = mTempCoords[1];
9151                    }
9152                }
9153
9154                onHandleMoved();
9155
9156                if (isPositionVisible()) {
9157                    mContainer.update(mContainerPositionX, mContainerPositionY,
9158                            mRight - mLeft, mBottom - mTop);
9159
9160                    if (mIsActive && !isShowing()) {
9161                        show();
9162                    }
9163                } else {
9164                    if (isShowing()) {
9165                        dismiss();
9166                    }
9167                }
9168            }
9169            return true;
9170        }
9171
9172        @Override
9173        protected void onDraw(Canvas c) {
9174            mDrawable.setBounds(0, 0, mRight - mLeft, mBottom - mTop);
9175            mDrawable.draw(c);
9176        }
9177
9178        @Override
9179        public boolean onTouchEvent(MotionEvent ev) {
9180            switch (ev.getActionMasked()) {
9181                case MotionEvent.ACTION_DOWN: {
9182                    startTouchUpFilter(getCurrentCursorOffset());
9183                    mTouchToWindowOffsetX = ev.getRawX() - mPositionX;
9184                    mTouchToWindowOffsetY = ev.getRawY() - mPositionY;
9185
9186                    final int[] coords = mTempCoords;
9187                    TextView.this.getLocationInWindow(coords);
9188                    mLastParentX = coords[0];
9189                    mLastParentY = coords[1];
9190                    mIsDragging = true;
9191                    break;
9192                }
9193
9194                case MotionEvent.ACTION_MOVE: {
9195                    final float rawX = ev.getRawX();
9196                    final float rawY = ev.getRawY();
9197
9198                    // Vertical hysteresis: vertical down movement tends to snap to ideal offset
9199                    final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY;
9200                    final float currentVerticalOffset = rawY - mPositionY - mLastParentY;
9201                    float newVerticalOffset;
9202                    if (previousVerticalOffset < mIdealVerticalOffset) {
9203                        newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset);
9204                        newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset);
9205                    } else {
9206                        newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset);
9207                        newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset);
9208                    }
9209                    mTouchToWindowOffsetY = newVerticalOffset + mLastParentY;
9210
9211                    final float newPosX = rawX - mTouchToWindowOffsetX + mHotspotX;
9212                    final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY;
9213
9214                    updatePosition(Math.round(newPosX), Math.round(newPosY));
9215                    break;
9216                }
9217
9218                case MotionEvent.ACTION_UP:
9219                    filterOnTouchUp();
9220                    mIsDragging = false;
9221                    break;
9222
9223                case MotionEvent.ACTION_CANCEL:
9224                    mIsDragging = false;
9225                    break;
9226            }
9227            return true;
9228        }
9229
9230        public boolean isDragging() {
9231            return mIsDragging;
9232        }
9233
9234        void onHandleMoved() {
9235            // Does nothing by default
9236        }
9237
9238        public void onDetached() {
9239            // Should be overriden to clean possible Runnable
9240        }
9241    }
9242
9243    private class InsertionHandleView extends HandleView {
9244        private static final int DELAY_BEFORE_FADE_OUT = 4000;
9245        private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds
9246
9247        // Used to detect taps on the insertion handle, which will affect the PastePopupWindow
9248        private long mTouchTimer;
9249        private float mDownPositionX, mDownPositionY;
9250        private PastePopupWindow mPastePopupWindow;
9251        private Runnable mHider;
9252        private Runnable mPastePopupShower;
9253
9254        @Override
9255        public void show() {
9256            super.show();
9257            hideDelayed();
9258            hidePastePopupWindow();
9259        }
9260
9261        public void show(int delayBeforePaste) {
9262            show();
9263
9264            final long durationSinceCutOrCopy = SystemClock.uptimeMillis() - sLastCutOrCopyTime;
9265            if (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION) {
9266                delayBeforePaste = 0;
9267            }
9268            if (delayBeforePaste == 0 || canPaste()) {
9269                if (mPastePopupShower == null) {
9270                    mPastePopupShower = new Runnable() {
9271                        public void run() {
9272                            showPastePopupWindow();
9273                        }
9274                    };
9275                }
9276                TextView.this.postDelayed(mPastePopupShower, delayBeforePaste);
9277            }
9278        }
9279
9280        @Override
9281        protected void dismiss() {
9282            super.dismiss();
9283            onDetached();
9284        }
9285
9286        private void hideDelayed() {
9287            removeHiderCallback();
9288            if (mHider == null) {
9289                mHider = new Runnable() {
9290                    public void run() {
9291                        hide();
9292                    }
9293                };
9294            }
9295            TextView.this.postDelayed(mHider, DELAY_BEFORE_FADE_OUT);
9296        }
9297
9298        private void removeHiderCallback() {
9299            if (mHider != null) {
9300                TextView.this.removeCallbacks(mHider);
9301            }
9302        }
9303
9304        @Override
9305        protected void initDrawable() {
9306            if (mSelectHandleCenter == null) {
9307                mSelectHandleCenter = mContext.getResources().getDrawable(
9308                        mTextSelectHandleRes);
9309            }
9310            mDrawable = mSelectHandleCenter;
9311            mHotspotX = mDrawable.getIntrinsicWidth() / 2.0f;
9312        }
9313
9314        @Override
9315        public boolean onTouchEvent(MotionEvent ev) {
9316            final boolean result = super.onTouchEvent(ev);
9317
9318            switch (ev.getActionMasked()) {
9319                case MotionEvent.ACTION_DOWN:
9320                    mDownPositionX = ev.getRawX();
9321                    mDownPositionY = ev.getRawY();
9322                    mTouchTimer = SystemClock.uptimeMillis();
9323                    break;
9324
9325                case MotionEvent.ACTION_UP:
9326                    long delay = SystemClock.uptimeMillis() - mTouchTimer;
9327                    if (delay < ViewConfiguration.getTapTimeout()) {
9328                        final float deltaX = mDownPositionX - ev.getRawX();
9329                        final float deltaY = mDownPositionY - ev.getRawY();
9330                        final float distanceSquared = deltaX * deltaX + deltaY * deltaY;
9331                        if (distanceSquared < mSquaredTouchSlopDistance) {
9332                            if (mPastePopupWindow != null && mPastePopupWindow.isShowing()) {
9333                                // Tapping on the handle dismisses the displayed paste view,
9334                                mPastePopupWindow.hide();
9335                            } else {
9336                                show(0);
9337                            }
9338                        }
9339                    }
9340                    hideDelayed();
9341                    break;
9342
9343                case MotionEvent.ACTION_CANCEL:
9344                    hideDelayed();
9345                    break;
9346
9347                default:
9348                    break;
9349            }
9350
9351            return result;
9352        }
9353
9354        @Override
9355        public int getCurrentCursorOffset() {
9356            return TextView.this.getSelectionStart();
9357        }
9358
9359        @Override
9360        public void updateOffset(int offset) {
9361            Selection.setSelection((Spannable) mText, offset);
9362        }
9363
9364        @Override
9365        public void updatePosition(int x, int y) {
9366            updateOffset(getOffset(x, y));
9367        }
9368
9369        void showPastePopupWindow() {
9370            if (mPastePopupWindow == null) {
9371                mPastePopupWindow = new PastePopupWindow();
9372            }
9373            mPastePopupWindow.show();
9374        }
9375
9376        @Override
9377        void onHandleMoved() {
9378            removeHiderCallback();
9379            hidePastePopupWindow();
9380        }
9381
9382        void hidePastePopupWindow() {
9383            if (mPastePopupShower != null) {
9384                TextView.this.removeCallbacks(mPastePopupShower);
9385            }
9386            if (mPastePopupWindow != null) {
9387                mPastePopupWindow.hide();
9388            }
9389        }
9390
9391        @Override
9392        public void onDetached() {
9393            removeHiderCallback();
9394            hidePastePopupWindow();
9395        }
9396    }
9397
9398    private class SelectionStartHandleView extends HandleView {
9399        @Override
9400        protected void initDrawable() {
9401            if (mSelectHandleLeft == null) {
9402                mSelectHandleLeft = mContext.getResources().getDrawable(
9403                        mTextSelectHandleLeftRes);
9404            }
9405            mDrawable = mSelectHandleLeft;
9406            mHotspotX = mDrawable.getIntrinsicWidth() * 3.0f / 4.0f;
9407        }
9408
9409        @Override
9410        public int getCurrentCursorOffset() {
9411            return TextView.this.getSelectionStart();
9412        }
9413
9414        @Override
9415        public void updateOffset(int offset) {
9416            Selection.setSelection((Spannable) mText, offset, getSelectionEnd());
9417        }
9418
9419        @Override
9420        public void updatePosition(int x, int y) {
9421            final int selectionStart = getSelectionStart();
9422            final int selectionEnd = getSelectionEnd();
9423
9424            int offset = getOffset(x, y);
9425
9426            // No need to redraw when the offset is unchanged
9427            if (offset == selectionStart) return;
9428            // Handles can not cross and selection is at least one character
9429            if (offset >= selectionEnd) offset = selectionEnd - 1;
9430
9431            Selection.setSelection((Spannable) mText, offset, selectionEnd);
9432        }
9433    }
9434
9435    private class SelectionEndHandleView extends HandleView {
9436        @Override
9437        protected void initDrawable() {
9438            if (mSelectHandleRight == null) {
9439                mSelectHandleRight = mContext.getResources().getDrawable(
9440                        mTextSelectHandleRightRes);
9441            }
9442            mDrawable = mSelectHandleRight;
9443            mHotspotX = mDrawable.getIntrinsicWidth() / 4.0f;
9444        }
9445
9446        @Override
9447        public int getCurrentCursorOffset() {
9448            return TextView.this.getSelectionEnd();
9449        }
9450
9451        @Override
9452        public void updateOffset(int offset) {
9453            Selection.setSelection((Spannable) mText, getSelectionStart(), offset);
9454        }
9455
9456        @Override
9457        public void updatePosition(int x, int y) {
9458            final int selectionStart = getSelectionStart();
9459            final int selectionEnd = getSelectionEnd();
9460
9461            int offset = getOffset(x, y);
9462
9463            // No need to redraw when the offset is unchanged
9464            if (offset == selectionEnd) return;
9465            // Handles can not cross and selection is at least one character
9466            if (offset <= selectionStart) offset = selectionStart + 1;
9467
9468            Selection.setSelection((Spannable) mText, selectionStart, offset);
9469        }
9470    }
9471
9472    /**
9473     * A CursorController instance can be used to control a cursor in the text.
9474     * It is not used outside of {@link TextView}.
9475     * @hide
9476     */
9477    private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener {
9478        /**
9479         * Makes the cursor controller visible on screen. Will be drawn by {@link #draw(Canvas)}.
9480         * See also {@link #hide()}.
9481         */
9482        public void show();
9483
9484        /**
9485         * Hide the cursor controller from screen.
9486         * See also {@link #show()}.
9487         */
9488        public void hide();
9489
9490        /**
9491         * This method is called by {@link #onTouchEvent(MotionEvent)} and gives the controller
9492         * a chance to become active and/or visible.
9493         * @param event The touch event
9494         */
9495        public boolean onTouchEvent(MotionEvent event);
9496
9497        /**
9498         * Called when the view is detached from window. Perform house keeping task, such as
9499         * stopping Runnable thread that would otherwise keep a reference on the context, thus
9500         * preventing the activity from being recycled.
9501         */
9502        public void onDetached();
9503    }
9504
9505    private class InsertionPointCursorController implements CursorController {
9506        private static final int DELAY_BEFORE_PASTE = 2000;
9507
9508        private InsertionHandleView mHandle;
9509
9510        public void show() {
9511            ((InsertionHandleView) getHandle()).show(DELAY_BEFORE_PASTE);
9512        }
9513
9514        public void showWithPaste() {
9515            ((InsertionHandleView) getHandle()).show(0);
9516        }
9517
9518        public void hide() {
9519            if (mHandle != null) {
9520                mHandle.hide();
9521            }
9522        }
9523
9524        public boolean onTouchEvent(MotionEvent ev) {
9525            return false;
9526        }
9527
9528        public void onTouchModeChanged(boolean isInTouchMode) {
9529            if (!isInTouchMode) {
9530                hide();
9531            }
9532        }
9533
9534        private HandleView getHandle() {
9535            if (mHandle == null) {
9536                mHandle = new InsertionHandleView();
9537            }
9538            return mHandle;
9539        }
9540
9541        @Override
9542        public void onDetached() {
9543            final ViewTreeObserver observer = getViewTreeObserver();
9544            observer.removeOnTouchModeChangeListener(this);
9545
9546            if (mHandle != null) mHandle.onDetached();
9547        }
9548    }
9549
9550    private class SelectionModifierCursorController implements CursorController {
9551        // The cursor controller handles, lazily created when shown.
9552        private SelectionStartHandleView mStartHandle;
9553        private SelectionEndHandleView mEndHandle;
9554        // The offsets of that last touch down event. Remembered to start selection there.
9555        private int mMinTouchOffset, mMaxTouchOffset;
9556
9557        // Double tap detection
9558        private long mPreviousTapUpTime = 0;
9559        private int mPreviousTapPositionX, mPreviousTapPositionY;
9560
9561        SelectionModifierCursorController() {
9562            resetTouchOffsets();
9563        }
9564
9565        public void show() {
9566            if (isInBatchEditMode()) {
9567                return;
9568            }
9569
9570            // Lazy object creation has to be done before updatePosition() is called.
9571            if (mStartHandle == null) mStartHandle = new SelectionStartHandleView();
9572            if (mEndHandle == null) mEndHandle = new SelectionEndHandleView();
9573
9574            mStartHandle.show();
9575            mEndHandle.show();
9576
9577            hideInsertionPointCursorController();
9578            hideSuggestions();
9579        }
9580
9581        public void hide() {
9582            if (mStartHandle != null) mStartHandle.hide();
9583            if (mEndHandle != null) mEndHandle.hide();
9584        }
9585
9586        public boolean onTouchEvent(MotionEvent event) {
9587            // This is done even when the View does not have focus, so that long presses can start
9588            // selection and tap can move cursor from this tap position.
9589            if (isTextEditable() || mTextIsSelectable) {
9590                switch (event.getActionMasked()) {
9591                    case MotionEvent.ACTION_DOWN:
9592                        final int x = (int) event.getX();
9593                        final int y = (int) event.getY();
9594
9595                        // Remember finger down position, to be able to start selection from there
9596                        mMinTouchOffset = mMaxTouchOffset = getOffset(x, y);
9597
9598                        // Double tap detection
9599                        long duration = SystemClock.uptimeMillis() - mPreviousTapUpTime;
9600                        if (duration <= ViewConfiguration.getDoubleTapTimeout() &&
9601                                isPositionOnText(x, y)) {
9602                            final int deltaX = x - mPreviousTapPositionX;
9603                            final int deltaY = y - mPreviousTapPositionY;
9604                            final int distanceSquared = deltaX * deltaX + deltaY * deltaY;
9605                            if (distanceSquared < mSquaredTouchSlopDistance) {
9606                                showSuggestions();
9607                                mDiscardNextActionUp = true;
9608                            }
9609                        }
9610
9611                        mPreviousTapPositionX = x;
9612                        mPreviousTapPositionY = y;
9613
9614                        break;
9615
9616                    case MotionEvent.ACTION_POINTER_DOWN:
9617                    case MotionEvent.ACTION_POINTER_UP:
9618                        // Handle multi-point gestures. Keep min and max offset positions.
9619                        // Only activated for devices that correctly handle multi-touch.
9620                        if (mContext.getPackageManager().hasSystemFeature(
9621                                PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) {
9622                            updateMinAndMaxOffsets(event);
9623                        }
9624                        break;
9625
9626                    case MotionEvent.ACTION_UP:
9627                        mPreviousTapUpTime = SystemClock.uptimeMillis();
9628                        break;
9629                }
9630            }
9631            return false;
9632        }
9633
9634        /**
9635         * @param event
9636         */
9637        private void updateMinAndMaxOffsets(MotionEvent event) {
9638            int pointerCount = event.getPointerCount();
9639            for (int index = 0; index < pointerCount; index++) {
9640                final int x = (int) event.getX(index);
9641                final int y = (int) event.getY(index);
9642                int offset = getOffset(x, y);
9643                if (offset < mMinTouchOffset) mMinTouchOffset = offset;
9644                if (offset > mMaxTouchOffset) mMaxTouchOffset = offset;
9645            }
9646        }
9647
9648        public int getMinTouchOffset() {
9649            return mMinTouchOffset;
9650        }
9651
9652        public int getMaxTouchOffset() {
9653            return mMaxTouchOffset;
9654        }
9655
9656        public void resetTouchOffsets() {
9657            mMinTouchOffset = mMaxTouchOffset = -1;
9658        }
9659
9660        /**
9661         * @return true iff this controller is currently used to move the selection start.
9662         */
9663        public boolean isSelectionStartDragged() {
9664            return mStartHandle != null && mStartHandle.isDragging();
9665        }
9666
9667        public void onTouchModeChanged(boolean isInTouchMode) {
9668            if (!isInTouchMode) {
9669                hide();
9670            }
9671        }
9672
9673        @Override
9674        public void onDetached() {
9675            final ViewTreeObserver observer = getViewTreeObserver();
9676            observer.removeOnTouchModeChangeListener(this);
9677
9678            if (mStartHandle != null) mStartHandle.onDetached();
9679            if (mEndHandle != null) mEndHandle.onDetached();
9680        }
9681    }
9682
9683    private void hideInsertionPointCursorController() {
9684        // No need to create the controller to hide it.
9685        if (mInsertionPointCursorController != null) {
9686            mInsertionPointCursorController.hide();
9687        }
9688    }
9689
9690    /**
9691     * Hides the insertion controller and stops text selection mode, hiding the selection controller
9692     */
9693    private void hideControllers() {
9694        hideInsertionPointCursorController();
9695        stopSelectionActionMode();
9696        hideSuggestions();
9697    }
9698
9699    /**
9700     * Get the offset character closest to the specified absolute position.
9701     *
9702     * @param x The horizontal absolute position of a point on screen
9703     * @param y The vertical absolute position of a point on screen
9704     * @return the character offset for the character whose position is closest to the specified
9705     *  position. Returns -1 if there is no layout.
9706     *
9707     * @hide
9708     */
9709    public int getOffset(int x, int y) {
9710        if (getLayout() == null) return -1;
9711        final int line = getLineAtCoordinate(y);
9712        final int offset = getOffsetAtCoordinate(line, x);
9713        return offset;
9714    }
9715
9716    private int convertToLocalHorizontalCoordinate(int x) {
9717        x -= getTotalPaddingLeft();
9718        // Clamp the position to inside of the view.
9719        x = Math.max(0, x);
9720        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
9721        x += getScrollX();
9722        return x;
9723    }
9724
9725    private int getLineAtCoordinate(int y) {
9726        y -= getTotalPaddingTop();
9727        // Clamp the position to inside of the view.
9728        y = Math.max(0, y);
9729        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
9730        y += getScrollY();
9731        return getLayout().getLineForVertical(y);
9732    }
9733
9734    private int getOffsetAtCoordinate(int line, int x) {
9735        x = convertToLocalHorizontalCoordinate(x);
9736        return getLayout().getOffsetForHorizontal(line, x);
9737    }
9738
9739    /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed
9740     * in the view. Returns false when the position is in the empty space of left/right of text.
9741     */
9742    private boolean isPositionOnText(int x, int y) {
9743        if (getLayout() == null) return false;
9744
9745        final int line = getLineAtCoordinate(y);
9746        x = convertToLocalHorizontalCoordinate(x);
9747
9748        if (x < getLayout().getLineLeft(line)) return false;
9749        if (x > getLayout().getLineRight(line)) return false;
9750        return true;
9751    }
9752
9753    @Override
9754    public boolean onDragEvent(DragEvent event) {
9755        switch (event.getAction()) {
9756            case DragEvent.ACTION_DRAG_STARTED:
9757                return hasInsertionController();
9758
9759            case DragEvent.ACTION_DRAG_ENTERED:
9760                TextView.this.requestFocus();
9761                return true;
9762
9763            case DragEvent.ACTION_DRAG_LOCATION:
9764                final int offset = getOffset((int) event.getX(), (int) event.getY());
9765                Selection.setSelection((Spannable)mText, offset);
9766                return true;
9767
9768            case DragEvent.ACTION_DROP:
9769                onDrop(event);
9770                return true;
9771
9772            case DragEvent.ACTION_DRAG_ENDED:
9773            case DragEvent.ACTION_DRAG_EXITED:
9774            default:
9775                return true;
9776        }
9777    }
9778
9779    private void onDrop(DragEvent event) {
9780        StringBuilder content = new StringBuilder("");
9781        ClipData clipData = event.getClipData();
9782        final int itemCount = clipData.getItemCount();
9783        for (int i=0; i < itemCount; i++) {
9784            Item item = clipData.getItemAt(i);
9785            content.append(item.coerceToText(TextView.this.mContext));
9786        }
9787
9788        final int offset = getOffset((int) event.getX(), (int) event.getY());
9789
9790        Object localState = event.getLocalState();
9791        DragLocalState dragLocalState = null;
9792        if (localState instanceof DragLocalState) {
9793            dragLocalState = (DragLocalState) localState;
9794        }
9795        boolean dragDropIntoItself = dragLocalState != null &&
9796                dragLocalState.sourceTextView == this;
9797
9798        if (dragDropIntoItself) {
9799            if (offset >= dragLocalState.start && offset < dragLocalState.end) {
9800                // A drop inside the original selection discards the drop.
9801                return;
9802            }
9803        }
9804
9805        final int originalLength = mText.length();
9806        long minMax = prepareSpacesAroundPaste(offset, offset, content);
9807        int min = extractRangeStartFromLong(minMax);
9808        int max = extractRangeEndFromLong(minMax);
9809
9810        Selection.setSelection((Spannable) mText, max);
9811        ((Editable) mText).replace(min, max, content);
9812
9813        if (dragDropIntoItself) {
9814            int dragSourceStart = dragLocalState.start;
9815            int dragSourceEnd = dragLocalState.end;
9816            if (max <= dragSourceStart) {
9817                // Inserting text before selection has shifted positions
9818                final int shift = mText.length() - originalLength;
9819                dragSourceStart += shift;
9820                dragSourceEnd += shift;
9821            }
9822
9823            // Delete original selection
9824            ((Editable) mText).delete(dragSourceStart, dragSourceEnd);
9825
9826            // Make sure we do not leave two adjacent spaces.
9827            if ((dragSourceStart == 0 ||
9828                    Character.isSpaceChar(mTransformed.charAt(dragSourceStart - 1))) &&
9829                    (dragSourceStart == mText.length() ||
9830                    Character.isSpaceChar(mTransformed.charAt(dragSourceStart)))) {
9831                final int pos = dragSourceStart == mText.length() ?
9832                        dragSourceStart - 1 : dragSourceStart;
9833                ((Editable) mText).delete(pos, pos + 1);
9834            }
9835        }
9836    }
9837
9838    /**
9839     * @return True if this view supports insertion handles.
9840     */
9841    boolean hasInsertionController() {
9842        return mInsertionControllerEnabled;
9843    }
9844
9845    /**
9846     * @return True if this view supports selection handles.
9847     */
9848    boolean hasSelectionController() {
9849        return mSelectionControllerEnabled;
9850    }
9851
9852    InsertionPointCursorController getInsertionController() {
9853        if (!mInsertionControllerEnabled) {
9854            return null;
9855        }
9856
9857        if (mInsertionPointCursorController == null) {
9858            mInsertionPointCursorController = new InsertionPointCursorController();
9859
9860            final ViewTreeObserver observer = getViewTreeObserver();
9861            observer.addOnTouchModeChangeListener(mInsertionPointCursorController);
9862        }
9863
9864        return mInsertionPointCursorController;
9865    }
9866
9867    SelectionModifierCursorController getSelectionController() {
9868        if (!mSelectionControllerEnabled) {
9869            return null;
9870        }
9871
9872        if (mSelectionModifierCursorController == null) {
9873            mSelectionModifierCursorController = new SelectionModifierCursorController();
9874
9875            final ViewTreeObserver observer = getViewTreeObserver();
9876            observer.addOnTouchModeChangeListener(mSelectionModifierCursorController);
9877        }
9878
9879        return mSelectionModifierCursorController;
9880    }
9881
9882    boolean isInBatchEditMode() {
9883        final InputMethodState ims = mInputMethodState;
9884        if (ims != null) {
9885            return ims.mBatchEditNesting > 0;
9886        }
9887        return mInBatchEditControllers;
9888    }
9889
9890    @ViewDebug.ExportedProperty(category = "text")
9891    private CharSequence            mText;
9892    private CharSequence            mTransformed;
9893    private BufferType              mBufferType = BufferType.NORMAL;
9894
9895    private int                     mInputType = EditorInfo.TYPE_NULL;
9896    private CharSequence            mHint;
9897    private Layout                  mHintLayout;
9898
9899    private KeyListener             mInput;
9900
9901    private MovementMethod          mMovement;
9902    private TransformationMethod    mTransformation;
9903    private ChangeWatcher           mChangeWatcher;
9904
9905    private ArrayList<TextWatcher>  mListeners = null;
9906
9907    // display attributes
9908    private final TextPaint         mTextPaint;
9909    private boolean                 mUserSetTextScaleX;
9910    private final Paint             mHighlightPaint;
9911    private int                     mHighlightColor = 0xCC475925;
9912    /**
9913     * This is temporarily visible to fix bug 3085564 in webView. Do not rely on
9914     * this field being protected. Will be restored as private when lineHeight
9915     * feature request 3215097 is implemented
9916     * @hide
9917     */
9918    protected Layout                mLayout;
9919
9920    private long                    mShowCursor;
9921    private Blink                   mBlink;
9922    private boolean                 mCursorVisible = true;
9923
9924    // Cursor Controllers.
9925    private InsertionPointCursorController mInsertionPointCursorController;
9926    private SelectionModifierCursorController mSelectionModifierCursorController;
9927    private ActionMode              mSelectionActionMode;
9928    private boolean                 mInsertionControllerEnabled;
9929    private boolean                 mSelectionControllerEnabled;
9930    private boolean                 mInBatchEditControllers;
9931
9932    // These are needed to desambiguate a long click. If the long click comes from ones of these, we
9933    // select from the current cursor position. Otherwise, select from long pressed position.
9934    private boolean                 mDPadCenterIsDown = false;
9935    private boolean                 mEnterKeyIsDown = false;
9936    private boolean                 mContextMenuTriggeredByKey = false;
9937    // Created once and shared by different CursorController helper methods.
9938    // Only one cursor controller is active at any time which prevent race conditions.
9939    private static Rect             sCursorControllerTempRect = new Rect();
9940
9941    private boolean                 mSelectAllOnFocus = false;
9942
9943    private int                     mGravity = Gravity.TOP | Gravity.LEFT;
9944    private boolean                 mHorizontallyScrolling;
9945
9946    private int                     mAutoLinkMask;
9947    private boolean                 mLinksClickable = true;
9948
9949    private float                   mSpacingMult = 1;
9950    private float                   mSpacingAdd = 0;
9951    private boolean                 mTextIsSelectable = false;
9952
9953    private static final int        LINES = 1;
9954    private static final int        EMS = LINES;
9955    private static final int        PIXELS = 2;
9956
9957    private int                     mMaximum = Integer.MAX_VALUE;
9958    private int                     mMaxMode = LINES;
9959    private int                     mMinimum = 0;
9960    private int                     mMinMode = LINES;
9961
9962    private int                     mMaxWidth = Integer.MAX_VALUE;
9963    private int                     mMaxWidthMode = PIXELS;
9964    private int                     mMinWidth = 0;
9965    private int                     mMinWidthMode = PIXELS;
9966
9967    private boolean                 mSingleLine;
9968    private int                     mDesiredHeightAtMeasure = -1;
9969    private boolean                 mIncludePad = true;
9970
9971    // tmp primitives, so we don't alloc them on each draw
9972    private Path                    mHighlightPath;
9973    private boolean                 mHighlightPathBogus = true;
9974    private static final RectF      sTempRect = new RectF();
9975
9976    // XXX should be much larger
9977    private static final int        VERY_WIDE = 16384;
9978
9979    private static final int        BLINK = 500;
9980
9981    private static final int ANIMATED_SCROLL_GAP = 250;
9982    private long mLastScroll;
9983    private Scroller mScroller = null;
9984
9985    private BoringLayout.Metrics mBoring;
9986    private BoringLayout.Metrics mHintBoring;
9987
9988    private BoringLayout mSavedLayout, mSavedHintLayout;
9989
9990    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
9991    private InputFilter[] mFilters = NO_FILTERS;
9992    private static final Spanned EMPTY_SPANNED = new SpannedString("");
9993    private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20;
9994    // System wide time for last cut or copy action.
9995    private static long sLastCutOrCopyTime;
9996    // Used to highlight a word when it is corrected by the IME
9997    private CorrectionHighlighter mCorrectionHighlighter;
9998    // New state used to change background based on whether this TextView is multiline.
9999    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
10000}
10001