TextView.java revision c0ccf0c47c00942a9d0f2670600a8f2d4d7adb5b 
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.widget;
18
19import android.R;
20import android.content.ClipData;
21import android.content.ClipData.Item;
22import android.content.ClipboardManager;
23import android.content.Context;
24import android.content.pm.PackageManager;
25import android.content.res.ColorStateList;
26import android.content.res.Resources;
27import android.content.res.TypedArray;
28import android.content.res.XmlResourceParser;
29import android.graphics.Canvas;
30import android.graphics.Color;
31import android.graphics.Paint;
32import android.graphics.Path;
33import android.graphics.Rect;
34import android.graphics.RectF;
35import android.graphics.Typeface;
36import android.graphics.drawable.Drawable;
37import android.inputmethodservice.ExtractEditText;
38import android.net.Uri;
39import android.os.Bundle;
40import android.os.Handler;
41import android.os.Message;
42import android.os.Parcel;
43import android.os.Parcelable;
44import android.os.SystemClock;
45import android.text.BoringLayout;
46import android.text.DynamicLayout;
47import android.text.Editable;
48import android.text.GetChars;
49import android.text.GraphicsOperations;
50import android.text.InputFilter;
51import android.text.InputType;
52import android.text.Layout;
53import android.text.ParcelableSpan;
54import android.text.Selection;
55import android.text.SpanWatcher;
56import android.text.Spannable;
57import android.text.SpannableString;
58import android.text.SpannableStringBuilder;
59import android.text.Spanned;
60import android.text.SpannedString;
61import android.text.StaticLayout;
62import android.text.TextPaint;
63import android.text.TextUtils;
64import android.text.TextWatcher;
65import android.text.method.ArrowKeyMovementMethod;
66import android.text.method.DateKeyListener;
67import android.text.method.DateTimeKeyListener;
68import android.text.method.DialerKeyListener;
69import android.text.method.DigitsKeyListener;
70import android.text.method.KeyListener;
71import android.text.method.LinkMovementMethod;
72import android.text.method.MetaKeyKeyListener;
73import android.text.method.MovementMethod;
74import android.text.method.PasswordTransformationMethod;
75import android.text.method.SingleLineTransformationMethod;
76import android.text.method.TextKeyListener;
77import android.text.method.TimeKeyListener;
78import android.text.method.TransformationMethod;
79import android.text.method.WordIterator;
80import android.text.style.ClickableSpan;
81import android.text.style.ParagraphStyle;
82import android.text.style.SuggestionSpan;
83import android.text.style.TextAppearanceSpan;
84import android.text.style.URLSpan;
85import android.text.style.UnderlineSpan;
86import android.text.style.UpdateAppearance;
87import android.text.util.Linkify;
88import android.util.AttributeSet;
89import android.util.DisplayMetrics;
90import android.util.FloatMath;
91import android.util.Log;
92import android.util.TypedValue;
93import android.view.ActionMode;
94import android.view.ActionMode.Callback;
95import android.view.ContextMenu;
96import android.view.DragEvent;
97import android.view.Gravity;
98import android.view.HapticFeedbackConstants;
99import android.view.KeyCharacterMap;
100import android.view.KeyEvent;
101import android.view.LayoutInflater;
102import android.view.Menu;
103import android.view.MenuItem;
104import android.view.MotionEvent;
105import android.view.View;
106import android.view.ViewAncestor;
107import android.view.ViewConfiguration;
108import android.view.ViewDebug;
109import android.view.ViewGroup;
110import android.view.ViewGroup.LayoutParams;
111import android.view.ViewParent;
112import android.view.ViewTreeObserver;
113import android.view.WindowManager;
114import android.view.accessibility.AccessibilityEvent;
115import android.view.accessibility.AccessibilityManager;
116import android.view.accessibility.AccessibilityNodeInfo;
117import android.view.animation.AnimationUtils;
118import android.view.inputmethod.BaseInputConnection;
119import android.view.inputmethod.CompletionInfo;
120import android.view.inputmethod.CorrectionInfo;
121import android.view.inputmethod.EditorInfo;
122import android.view.inputmethod.ExtractedText;
123import android.view.inputmethod.ExtractedTextRequest;
124import android.view.inputmethod.InputConnection;
125import android.view.inputmethod.InputMethodManager;
126import android.widget.RemoteViews.RemoteView;
127
128import com.android.internal.util.FastMath;
129import com.android.internal.widget.EditableInputConnection;
130
131import org.xmlpull.v1.XmlPullParserException;
132
133import java.io.IOException;
134import java.lang.ref.WeakReference;
135import java.text.BreakIterator;
136import java.util.ArrayList;
137
138/**
139 * Displays text to the user and optionally allows them to edit it.  A TextView
140 * is a complete text editor, however the basic class is configured to not
141 * allow editing; see {@link EditText} for a subclass that configures the text
142 * view for editing.
143 *
144 * <p>
145 * <b>XML attributes</b>
146 * <p>
147 * See {@link android.R.styleable#TextView TextView Attributes},
148 * {@link android.R.styleable#View View Attributes}
149 *
150 * @attr ref android.R.styleable#TextView_text
151 * @attr ref android.R.styleable#TextView_bufferType
152 * @attr ref android.R.styleable#TextView_hint
153 * @attr ref android.R.styleable#TextView_textColor
154 * @attr ref android.R.styleable#TextView_textColorHighlight
155 * @attr ref android.R.styleable#TextView_textColorHint
156 * @attr ref android.R.styleable#TextView_textAppearance
157 * @attr ref android.R.styleable#TextView_textColorLink
158 * @attr ref android.R.styleable#TextView_textSize
159 * @attr ref android.R.styleable#TextView_textScaleX
160 * @attr ref android.R.styleable#TextView_typeface
161 * @attr ref android.R.styleable#TextView_textStyle
162 * @attr ref android.R.styleable#TextView_cursorVisible
163 * @attr ref android.R.styleable#TextView_maxLines
164 * @attr ref android.R.styleable#TextView_maxHeight
165 * @attr ref android.R.styleable#TextView_lines
166 * @attr ref android.R.styleable#TextView_height
167 * @attr ref android.R.styleable#TextView_minLines
168 * @attr ref android.R.styleable#TextView_minHeight
169 * @attr ref android.R.styleable#TextView_maxEms
170 * @attr ref android.R.styleable#TextView_maxWidth
171 * @attr ref android.R.styleable#TextView_ems
172 * @attr ref android.R.styleable#TextView_width
173 * @attr ref android.R.styleable#TextView_minEms
174 * @attr ref android.R.styleable#TextView_minWidth
175 * @attr ref android.R.styleable#TextView_gravity
176 * @attr ref android.R.styleable#TextView_scrollHorizontally
177 * @attr ref android.R.styleable#TextView_password
178 * @attr ref android.R.styleable#TextView_singleLine
179 * @attr ref android.R.styleable#TextView_selectAllOnFocus
180 * @attr ref android.R.styleable#TextView_includeFontPadding
181 * @attr ref android.R.styleable#TextView_maxLength
182 * @attr ref android.R.styleable#TextView_shadowColor
183 * @attr ref android.R.styleable#TextView_shadowDx
184 * @attr ref android.R.styleable#TextView_shadowDy
185 * @attr ref android.R.styleable#TextView_shadowRadius
186 * @attr ref android.R.styleable#TextView_autoLink
187 * @attr ref android.R.styleable#TextView_linksClickable
188 * @attr ref android.R.styleable#TextView_numeric
189 * @attr ref android.R.styleable#TextView_digits
190 * @attr ref android.R.styleable#TextView_phoneNumber
191 * @attr ref android.R.styleable#TextView_inputMethod
192 * @attr ref android.R.styleable#TextView_capitalize
193 * @attr ref android.R.styleable#TextView_autoText
194 * @attr ref android.R.styleable#TextView_editable
195 * @attr ref android.R.styleable#TextView_freezesText
196 * @attr ref android.R.styleable#TextView_ellipsize
197 * @attr ref android.R.styleable#TextView_drawableTop
198 * @attr ref android.R.styleable#TextView_drawableBottom
199 * @attr ref android.R.styleable#TextView_drawableRight
200 * @attr ref android.R.styleable#TextView_drawableLeft
201 * @attr ref android.R.styleable#TextView_drawablePadding
202 * @attr ref android.R.styleable#TextView_lineSpacingExtra
203 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
204 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
205 * @attr ref android.R.styleable#TextView_inputType
206 * @attr ref android.R.styleable#TextView_imeOptions
207 * @attr ref android.R.styleable#TextView_privateImeOptions
208 * @attr ref android.R.styleable#TextView_imeActionLabel
209 * @attr ref android.R.styleable#TextView_imeActionId
210 * @attr ref android.R.styleable#TextView_editorExtras
211 */
212@RemoteView
213public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
214    static final String LOG_TAG = "TextView";
215    static final boolean DEBUG_EXTRACT = false;
216
217    private static final int PRIORITY = 100;
218    private int mCurrentAlpha = 255;
219
220    final int[] mTempCoords = new int[2];
221    Rect mTempRect;
222
223    private ColorStateList mTextColor;
224    private int mCurTextColor;
225    private ColorStateList mHintTextColor;
226    private ColorStateList mLinkTextColor;
227    private int mCurHintTextColor;
228    private boolean mFreezesText;
229    private boolean mFrozenWithFocus;
230    private boolean mTemporaryDetach;
231    private boolean mDispatchTemporaryDetach;
232
233    private boolean mDiscardNextActionUp = false;
234    private boolean mIgnoreActionUpEvent = false;
235
236    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
237    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
238
239    private float mShadowRadius, mShadowDx, mShadowDy;
240
241    private static final int PREDRAW_NOT_REGISTERED = 0;
242    private static final int PREDRAW_PENDING = 1;
243    private static final int PREDRAW_DONE = 2;
244    private int mPreDrawState = PREDRAW_NOT_REGISTERED;
245
246    private TextUtils.TruncateAt mEllipsize = null;
247
248    // Enum for the "typeface" XML parameter.
249    // TODO: How can we get this from the XML instead of hardcoding it here?
250    private static final int SANS = 1;
251    private static final int SERIF = 2;
252    private static final int MONOSPACE = 3;
253
254    // Bitfield for the "numeric" XML parameter.
255    // TODO: How can we get this from the XML instead of hardcoding it here?
256    private static final int SIGNED = 2;
257    private static final int DECIMAL = 4;
258
259    class Drawables {
260        final Rect mCompoundRect = new Rect();
261        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight;
262        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight;
263        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight;
264        int mDrawablePadding;
265    }
266    private Drawables mDrawables;
267
268    private CharSequence mError;
269    private boolean mErrorWasChanged;
270    private ErrorPopup mPopup;
271    /**
272     * This flag is set if the TextView tries to display an error before it
273     * is attached to the window (so its position is still unknown).
274     * It causes the error to be shown later, when onAttachedToWindow()
275     * is called.
276     */
277    private boolean mShowErrorAfterAttach;
278
279    private CharWrapper mCharWrapper = null;
280
281    private boolean mSelectionMoved = false;
282    private boolean mTouchFocusSelected = false;
283
284    private Marquee mMarquee;
285    private boolean mRestartMarquee;
286
287    private int mMarqueeRepeatLimit = 3;
288
289    class InputContentType {
290        int imeOptions = EditorInfo.IME_NULL;
291        String privateImeOptions;
292        CharSequence imeActionLabel;
293        int imeActionId;
294        Bundle extras;
295        OnEditorActionListener onEditorActionListener;
296        boolean enterDown;
297    }
298    InputContentType mInputContentType;
299
300    class InputMethodState {
301        Rect mCursorRectInWindow = new Rect();
302        RectF mTmpRectF = new RectF();
303        float[] mTmpOffset = new float[2];
304        ExtractedTextRequest mExtracting;
305        final ExtractedText mTmpExtracted = new ExtractedText();
306        int mBatchEditNesting;
307        boolean mCursorChanged;
308        boolean mSelectionModeChanged;
309        boolean mContentChanged;
310        int mChangedStart, mChangedEnd, mChangedDelta;
311    }
312    InputMethodState mInputMethodState;
313
314    private int mTextSelectHandleLeftRes;
315    private int mTextSelectHandleRightRes;
316    private int mTextSelectHandleRes;
317    private int mTextEditPasteWindowLayout, mTextEditSidePasteWindowLayout;
318    private int mTextEditNoPasteWindowLayout, mTextEditSideNoPasteWindowLayout;
319
320    private int mTextEditSuggestionsBottomWindowLayout, mTextEditSuggestionsTopWindowLayout;
321    private int mTextEditSuggestionItemLayout;
322    private SuggestionsPopupWindow mSuggestionsPopupWindow;
323    private SuggestionRangeSpan mSuggestionRangeSpan;
324    private boolean mSuggestionsEnabled = true;
325
326    private int mCursorDrawableRes;
327    private final Drawable[] mCursorDrawable = new Drawable[2];
328    private int mCursorCount; // Actual current number of used mCursorDrawable: 0, 1 or 2
329
330    private Drawable mSelectHandleLeft;
331    private Drawable mSelectHandleRight;
332    private Drawable mSelectHandleCenter;
333
334    private float mLastDownPositionX, mLastDownPositionY;
335    private Callback mCustomSelectionActionModeCallback;
336
337    private final int mSquaredTouchSlopDistance;
338    // Set when this TextView gained focus with some text selected. Will start selection mode.
339    private boolean mCreatedWithASelection = false;
340
341    private WordIterator mWordIterator;
342
343    // The alignment to pass to Layout, or null if not resolved.
344    private Layout.Alignment mLayoutAlignment;
345
346    // The default value for mTextAlign.
347    private TextAlign mTextAlign = TextAlign.INHERIT;
348
349    private static enum TextAlign {
350        INHERIT, GRAVITY, TEXT_START, TEXT_END, CENTER, VIEW_START, VIEW_END;
351    }
352
353    /*
354     * Kick-start the font cache for the zygote process (to pay the cost of
355     * initializing freetype for our default font only once).
356     */
357    static {
358        Paint p = new Paint();
359        p.setAntiAlias(true);
360        // We don't care about the result, just the side-effect of measuring.
361        p.measureText("H");
362    }
363
364    /**
365     * Interface definition for a callback to be invoked when an action is
366     * performed on the editor.
367     */
368    public interface OnEditorActionListener {
369        /**
370         * Called when an action is being performed.
371         *
372         * @param v The view that was clicked.
373         * @param actionId Identifier of the action.  This will be either the
374         * identifier you supplied, or {@link EditorInfo#IME_NULL
375         * EditorInfo.IME_NULL} if being called due to the enter key
376         * being pressed.
377         * @param event If triggered by an enter key, this is the event;
378         * otherwise, this is null.
379         * @return Return true if you have consumed the action, else false.
380         */
381        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
382    }
383
384    public TextView(Context context) {
385        this(context, null);
386    }
387
388    public TextView(Context context,
389                    AttributeSet attrs) {
390        this(context, attrs, com.android.internal.R.attr.textViewStyle);
391    }
392
393    @SuppressWarnings("deprecation")
394    public TextView(Context context,
395                    AttributeSet attrs,
396                    int defStyle) {
397        super(context, attrs, defStyle);
398        mText = "";
399
400        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
401        mTextPaint.density = getResources().getDisplayMetrics().density;
402        mTextPaint.setCompatibilityScaling(
403                getResources().getCompatibilityInfo().applicationScale);
404
405        // If we get the paint from the skin, we should set it to left, since
406        // the layout always wants it to be left.
407        // mTextPaint.setTextAlign(Paint.Align.LEFT);
408
409        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
410        mHighlightPaint.setCompatibilityScaling(
411                getResources().getCompatibilityInfo().applicationScale);
412
413        mMovement = getDefaultMovementMethod();
414        mTransformation = null;
415
416        TypedArray a =
417            context.obtainStyledAttributes(
418                attrs, com.android.internal.R.styleable.TextView, defStyle, 0);
419
420        int textColorHighlight = 0;
421        ColorStateList textColor = null;
422        ColorStateList textColorHint = null;
423        ColorStateList textColorLink = null;
424        int textSize = 15;
425        int typefaceIndex = -1;
426        int styleIndex = -1;
427
428        /*
429         * Look the appearance up without checking first if it exists because
430         * almost every TextView has one and it greatly simplifies the logic
431         * to be able to parse the appearance first and then let specific tags
432         * for this View override it.
433         */
434        TypedArray appearance = null;
435        int ap = a.getResourceId(com.android.internal.R.styleable.TextView_textAppearance, -1);
436        if (ap != -1) {
437            appearance = context.obtainStyledAttributes(ap,
438                                com.android.internal.R.styleable.
439                                TextAppearance);
440        }
441        if (appearance != null) {
442            int n = appearance.getIndexCount();
443            for (int i = 0; i < n; i++) {
444                int attr = appearance.getIndex(i);
445
446                switch (attr) {
447                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
448                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
449                    break;
450
451                case com.android.internal.R.styleable.TextAppearance_textColor:
452                    textColor = appearance.getColorStateList(attr);
453                    break;
454
455                case com.android.internal.R.styleable.TextAppearance_textColorHint:
456                    textColorHint = appearance.getColorStateList(attr);
457                    break;
458
459                case com.android.internal.R.styleable.TextAppearance_textColorLink:
460                    textColorLink = appearance.getColorStateList(attr);
461                    break;
462
463                case com.android.internal.R.styleable.TextAppearance_textSize:
464                    textSize = appearance.getDimensionPixelSize(attr, textSize);
465                    break;
466
467                case com.android.internal.R.styleable.TextAppearance_typeface:
468                    typefaceIndex = appearance.getInt(attr, -1);
469                    break;
470
471                case com.android.internal.R.styleable.TextAppearance_textStyle:
472                    styleIndex = appearance.getInt(attr, -1);
473                    break;
474                }
475            }
476
477            appearance.recycle();
478        }
479
480        boolean editable = getDefaultEditable();
481        CharSequence inputMethod = null;
482        int numeric = 0;
483        CharSequence digits = null;
484        boolean phone = false;
485        boolean autotext = false;
486        int autocap = -1;
487        int buffertype = 0;
488        boolean selectallonfocus = false;
489        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
490            drawableBottom = null;
491        int drawablePadding = 0;
492        int ellipsize = -1;
493        boolean singleLine = false;
494        int maxlength = -1;
495        CharSequence text = "";
496        CharSequence hint = null;
497        int shadowcolor = 0;
498        float dx = 0, dy = 0, r = 0;
499        boolean password = false;
500        int inputType = EditorInfo.TYPE_NULL;
501
502        int n = a.getIndexCount();
503        for (int i = 0; i < n; i++) {
504            int attr = a.getIndex(i);
505
506            switch (attr) {
507            case com.android.internal.R.styleable.TextView_editable:
508                editable = a.getBoolean(attr, editable);
509                break;
510
511            case com.android.internal.R.styleable.TextView_inputMethod:
512                inputMethod = a.getText(attr);
513                break;
514
515            case com.android.internal.R.styleable.TextView_numeric:
516                numeric = a.getInt(attr, numeric);
517                break;
518
519            case com.android.internal.R.styleable.TextView_digits:
520                digits = a.getText(attr);
521                break;
522
523            case com.android.internal.R.styleable.TextView_phoneNumber:
524                phone = a.getBoolean(attr, phone);
525                break;
526
527            case com.android.internal.R.styleable.TextView_autoText:
528                autotext = a.getBoolean(attr, autotext);
529                break;
530
531            case com.android.internal.R.styleable.TextView_capitalize:
532                autocap = a.getInt(attr, autocap);
533                break;
534
535            case com.android.internal.R.styleable.TextView_bufferType:
536                buffertype = a.getInt(attr, buffertype);
537                break;
538
539            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
540                selectallonfocus = a.getBoolean(attr, selectallonfocus);
541                break;
542
543            case com.android.internal.R.styleable.TextView_autoLink:
544                mAutoLinkMask = a.getInt(attr, 0);
545                break;
546
547            case com.android.internal.R.styleable.TextView_linksClickable:
548                mLinksClickable = a.getBoolean(attr, true);
549                break;
550
551            case com.android.internal.R.styleable.TextView_drawableLeft:
552                drawableLeft = a.getDrawable(attr);
553                break;
554
555            case com.android.internal.R.styleable.TextView_drawableTop:
556                drawableTop = a.getDrawable(attr);
557                break;
558
559            case com.android.internal.R.styleable.TextView_drawableRight:
560                drawableRight = a.getDrawable(attr);
561                break;
562
563            case com.android.internal.R.styleable.TextView_drawableBottom:
564                drawableBottom = a.getDrawable(attr);
565                break;
566
567            case com.android.internal.R.styleable.TextView_drawablePadding:
568                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
569                break;
570
571            case com.android.internal.R.styleable.TextView_maxLines:
572                setMaxLines(a.getInt(attr, -1));
573                break;
574
575            case com.android.internal.R.styleable.TextView_maxHeight:
576                setMaxHeight(a.getDimensionPixelSize(attr, -1));
577                break;
578
579            case com.android.internal.R.styleable.TextView_lines:
580                setLines(a.getInt(attr, -1));
581                break;
582
583            case com.android.internal.R.styleable.TextView_height:
584                setHeight(a.getDimensionPixelSize(attr, -1));
585                break;
586
587            case com.android.internal.R.styleable.TextView_minLines:
588                setMinLines(a.getInt(attr, -1));
589                break;
590
591            case com.android.internal.R.styleable.TextView_minHeight:
592                setMinHeight(a.getDimensionPixelSize(attr, -1));
593                break;
594
595            case com.android.internal.R.styleable.TextView_maxEms:
596                setMaxEms(a.getInt(attr, -1));
597                break;
598
599            case com.android.internal.R.styleable.TextView_maxWidth:
600                setMaxWidth(a.getDimensionPixelSize(attr, -1));
601                break;
602
603            case com.android.internal.R.styleable.TextView_ems:
604                setEms(a.getInt(attr, -1));
605                break;
606
607            case com.android.internal.R.styleable.TextView_width:
608                setWidth(a.getDimensionPixelSize(attr, -1));
609                break;
610
611            case com.android.internal.R.styleable.TextView_minEms:
612                setMinEms(a.getInt(attr, -1));
613                break;
614
615            case com.android.internal.R.styleable.TextView_minWidth:
616                setMinWidth(a.getDimensionPixelSize(attr, -1));
617                break;
618
619            case com.android.internal.R.styleable.TextView_gravity:
620                setGravity(a.getInt(attr, -1));
621                break;
622
623            case com.android.internal.R.styleable.TextView_hint:
624                hint = a.getText(attr);
625                break;
626
627            case com.android.internal.R.styleable.TextView_text:
628                text = a.getText(attr);
629                break;
630
631            case com.android.internal.R.styleable.TextView_scrollHorizontally:
632                if (a.getBoolean(attr, false)) {
633                    setHorizontallyScrolling(true);
634                }
635                break;
636
637            case com.android.internal.R.styleable.TextView_singleLine:
638                singleLine = a.getBoolean(attr, singleLine);
639                break;
640
641            case com.android.internal.R.styleable.TextView_ellipsize:
642                ellipsize = a.getInt(attr, ellipsize);
643                break;
644
645            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
646                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
647                break;
648
649            case com.android.internal.R.styleable.TextView_includeFontPadding:
650                if (!a.getBoolean(attr, true)) {
651                    setIncludeFontPadding(false);
652                }
653                break;
654
655            case com.android.internal.R.styleable.TextView_cursorVisible:
656                if (!a.getBoolean(attr, true)) {
657                    setCursorVisible(false);
658                }
659                break;
660
661            case com.android.internal.R.styleable.TextView_maxLength:
662                maxlength = a.getInt(attr, -1);
663                break;
664
665            case com.android.internal.R.styleable.TextView_textScaleX:
666                setTextScaleX(a.getFloat(attr, 1.0f));
667                break;
668
669            case com.android.internal.R.styleable.TextView_freezesText:
670                mFreezesText = a.getBoolean(attr, false);
671                break;
672
673            case com.android.internal.R.styleable.TextView_shadowColor:
674                shadowcolor = a.getInt(attr, 0);
675                break;
676
677            case com.android.internal.R.styleable.TextView_shadowDx:
678                dx = a.getFloat(attr, 0);
679                break;
680
681            case com.android.internal.R.styleable.TextView_shadowDy:
682                dy = a.getFloat(attr, 0);
683                break;
684
685            case com.android.internal.R.styleable.TextView_shadowRadius:
686                r = a.getFloat(attr, 0);
687                break;
688
689            case com.android.internal.R.styleable.TextView_enabled:
690                setEnabled(a.getBoolean(attr, isEnabled()));
691                break;
692
693            case com.android.internal.R.styleable.TextView_textColorHighlight:
694                textColorHighlight = a.getColor(attr, textColorHighlight);
695                break;
696
697            case com.android.internal.R.styleable.TextView_textColor:
698                textColor = a.getColorStateList(attr);
699                break;
700
701            case com.android.internal.R.styleable.TextView_textColorHint:
702                textColorHint = a.getColorStateList(attr);
703                break;
704
705            case com.android.internal.R.styleable.TextView_textColorLink:
706                textColorLink = a.getColorStateList(attr);
707                break;
708
709            case com.android.internal.R.styleable.TextView_textSize:
710                textSize = a.getDimensionPixelSize(attr, textSize);
711                break;
712
713            case com.android.internal.R.styleable.TextView_typeface:
714                typefaceIndex = a.getInt(attr, typefaceIndex);
715                break;
716
717            case com.android.internal.R.styleable.TextView_textStyle:
718                styleIndex = a.getInt(attr, styleIndex);
719                break;
720
721            case com.android.internal.R.styleable.TextView_password:
722                password = a.getBoolean(attr, password);
723                break;
724
725            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
726                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
727                break;
728
729            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
730                mSpacingMult = a.getFloat(attr, mSpacingMult);
731                break;
732
733            case com.android.internal.R.styleable.TextView_inputType:
734                inputType = a.getInt(attr, mInputType);
735                break;
736
737            case com.android.internal.R.styleable.TextView_imeOptions:
738                if (mInputContentType == null) {
739                    mInputContentType = new InputContentType();
740                }
741                mInputContentType.imeOptions = a.getInt(attr,
742                        mInputContentType.imeOptions);
743                break;
744
745            case com.android.internal.R.styleable.TextView_imeActionLabel:
746                if (mInputContentType == null) {
747                    mInputContentType = new InputContentType();
748                }
749                mInputContentType.imeActionLabel = a.getText(attr);
750                break;
751
752            case com.android.internal.R.styleable.TextView_imeActionId:
753                if (mInputContentType == null) {
754                    mInputContentType = new InputContentType();
755                }
756                mInputContentType.imeActionId = a.getInt(attr,
757                        mInputContentType.imeActionId);
758                break;
759
760            case com.android.internal.R.styleable.TextView_privateImeOptions:
761                setPrivateImeOptions(a.getString(attr));
762                break;
763
764            case com.android.internal.R.styleable.TextView_editorExtras:
765                try {
766                    setInputExtras(a.getResourceId(attr, 0));
767                } catch (XmlPullParserException e) {
768                    Log.w(LOG_TAG, "Failure reading input extras", e);
769                } catch (IOException e) {
770                    Log.w(LOG_TAG, "Failure reading input extras", e);
771                }
772                break;
773
774            case com.android.internal.R.styleable.TextView_textCursorDrawable:
775                mCursorDrawableRes = a.getResourceId(attr, 0);
776                break;
777
778            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
779                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
780                break;
781
782            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
783                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
784                break;
785
786            case com.android.internal.R.styleable.TextView_textSelectHandle:
787                mTextSelectHandleRes = a.getResourceId(attr, 0);
788                break;
789
790            case com.android.internal.R.styleable.TextView_textEditPasteWindowLayout:
791                mTextEditPasteWindowLayout = a.getResourceId(attr, 0);
792                break;
793
794            case com.android.internal.R.styleable.TextView_textEditNoPasteWindowLayout:
795                mTextEditNoPasteWindowLayout = a.getResourceId(attr, 0);
796                break;
797
798            case com.android.internal.R.styleable.TextView_textEditSidePasteWindowLayout:
799                mTextEditSidePasteWindowLayout = a.getResourceId(attr, 0);
800                break;
801
802            case com.android.internal.R.styleable.TextView_textEditSideNoPasteWindowLayout:
803                mTextEditSideNoPasteWindowLayout = a.getResourceId(attr, 0);
804                break;
805
806            case com.android.internal.R.styleable.TextView_textEditSuggestionsBottomWindowLayout:
807                mTextEditSuggestionsBottomWindowLayout = a.getResourceId(attr, 0);
808                break;
809
810            case com.android.internal.R.styleable.TextView_textEditSuggestionsTopWindowLayout:
811                mTextEditSuggestionsTopWindowLayout = a.getResourceId(attr, 0);
812                break;
813
814            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
815                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
816                break;
817
818            case com.android.internal.R.styleable.TextView_textIsSelectable:
819                mTextIsSelectable = a.getBoolean(attr, false);
820                break;
821
822            case com.android.internal.R.styleable.TextView_suggestionsEnabled:
823                mSuggestionsEnabled = a.getBoolean(attr, true);
824                break;
825            }
826        }
827        a.recycle();
828
829        BufferType bufferType = BufferType.EDITABLE;
830
831        final int variation =
832                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
833        final boolean passwordInputType = variation
834                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
835        final boolean webPasswordInputType = variation
836                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
837        final boolean numberPasswordInputType = variation
838                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
839
840        if (inputMethod != null) {
841            Class<?> c;
842
843            try {
844                c = Class.forName(inputMethod.toString());
845            } catch (ClassNotFoundException ex) {
846                throw new RuntimeException(ex);
847            }
848
849            try {
850                mInput = (KeyListener) c.newInstance();
851            } catch (InstantiationException ex) {
852                throw new RuntimeException(ex);
853            } catch (IllegalAccessException ex) {
854                throw new RuntimeException(ex);
855            }
856            try {
857                mInputType = inputType != EditorInfo.TYPE_NULL
858                        ? inputType
859                        : mInput.getInputType();
860            } catch (IncompatibleClassChangeError e) {
861                mInputType = EditorInfo.TYPE_CLASS_TEXT;
862            }
863        } else if (digits != null) {
864            mInput = DigitsKeyListener.getInstance(digits.toString());
865            // If no input type was specified, we will default to generic
866            // text, since we can't tell the IME about the set of digits
867            // that was selected.
868            mInputType = inputType != EditorInfo.TYPE_NULL
869                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
870        } else if (inputType != EditorInfo.TYPE_NULL) {
871            setInputType(inputType, true);
872            // If set, the input type overrides what was set using the deprecated singleLine flag.
873            singleLine = !isMultilineInputType(inputType);
874        } else if (phone) {
875            mInput = DialerKeyListener.getInstance();
876            mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
877        } else if (numeric != 0) {
878            mInput = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
879                                                   (numeric & DECIMAL) != 0);
880            inputType = EditorInfo.TYPE_CLASS_NUMBER;
881            if ((numeric & SIGNED) != 0) {
882                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
883            }
884            if ((numeric & DECIMAL) != 0) {
885                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
886            }
887            mInputType = inputType;
888        } else if (autotext || autocap != -1) {
889            TextKeyListener.Capitalize cap;
890
891            inputType = EditorInfo.TYPE_CLASS_TEXT;
892
893            switch (autocap) {
894            case 1:
895                cap = TextKeyListener.Capitalize.SENTENCES;
896                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
897                break;
898
899            case 2:
900                cap = TextKeyListener.Capitalize.WORDS;
901                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
902                break;
903
904            case 3:
905                cap = TextKeyListener.Capitalize.CHARACTERS;
906                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
907                break;
908
909            default:
910                cap = TextKeyListener.Capitalize.NONE;
911                break;
912            }
913
914            mInput = TextKeyListener.getInstance(autotext, cap);
915            mInputType = inputType;
916        } else if (mTextIsSelectable) {
917            // Prevent text changes from keyboard.
918            mInputType = EditorInfo.TYPE_NULL;
919            mInput = null;
920            bufferType = BufferType.SPANNABLE;
921            // Required to request focus while in touch mode.
922            setFocusableInTouchMode(true);
923            // So that selection can be changed using arrow keys and touch is handled.
924            setMovementMethod(ArrowKeyMovementMethod.getInstance());
925        } else if (editable) {
926            mInput = TextKeyListener.getInstance();
927            mInputType = EditorInfo.TYPE_CLASS_TEXT;
928        } else {
929            mInput = null;
930
931            switch (buffertype) {
932                case 0:
933                    bufferType = BufferType.NORMAL;
934                    break;
935                case 1:
936                    bufferType = BufferType.SPANNABLE;
937                    break;
938                case 2:
939                    bufferType = BufferType.EDITABLE;
940                    break;
941            }
942        }
943
944        // mInputType has been set from inputType, possibly modified by mInputMethod.
945        // Specialize mInputType to [web]password if we have a text class and the original input
946        // type was a password.
947        if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
948            if (password || passwordInputType) {
949                mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
950                        | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD;
951            }
952            if (webPasswordInputType) {
953                mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
954                        | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD;
955            }
956        } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) {
957            if (numberPasswordInputType) {
958                mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION))
959                        | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD;
960            }
961        }
962
963        if (selectallonfocus) {
964            mSelectAllOnFocus = true;
965
966            if (bufferType == BufferType.NORMAL)
967                bufferType = BufferType.SPANNABLE;
968        }
969
970        setCompoundDrawablesWithIntrinsicBounds(
971            drawableLeft, drawableTop, drawableRight, drawableBottom);
972        setCompoundDrawablePadding(drawablePadding);
973
974        // Same as setSingleLine(), but make sure the transformation method and the maximum number
975        // of lines of height are unchanged for multi-line TextViews.
976        setInputTypeSingleLine(singleLine);
977        applySingleLine(singleLine, singleLine, singleLine);
978
979        if (singleLine && mInput == null && ellipsize < 0) {
980                ellipsize = 3; // END
981        }
982
983        switch (ellipsize) {
984            case 1:
985                setEllipsize(TextUtils.TruncateAt.START);
986                break;
987            case 2:
988                setEllipsize(TextUtils.TruncateAt.MIDDLE);
989                break;
990            case 3:
991                setEllipsize(TextUtils.TruncateAt.END);
992                break;
993            case 4:
994                setHorizontalFadingEdgeEnabled(true);
995                setEllipsize(TextUtils.TruncateAt.MARQUEE);
996                break;
997        }
998
999        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1000        setHintTextColor(textColorHint);
1001        setLinkTextColor(textColorLink);
1002        if (textColorHighlight != 0) {
1003            setHighlightColor(textColorHighlight);
1004        }
1005        setRawTextSize(textSize);
1006
1007        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1008            setTransformationMethod(PasswordTransformationMethod.getInstance());
1009            typefaceIndex = MONOSPACE;
1010        } else if ((mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1011                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1012            typefaceIndex = MONOSPACE;
1013        }
1014
1015        setTypefaceByIndex(typefaceIndex, styleIndex);
1016
1017        if (shadowcolor != 0) {
1018            setShadowLayer(r, dx, dy, shadowcolor);
1019        }
1020
1021        if (maxlength >= 0) {
1022            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1023        } else {
1024            setFilters(NO_FILTERS);
1025        }
1026
1027        setText(text, bufferType);
1028        if (hint != null) setHint(hint);
1029
1030        /*
1031         * Views are not normally focusable unless specified to be.
1032         * However, TextViews that have input or movement methods *are*
1033         * focusable by default.
1034         */
1035        a = context.obtainStyledAttributes(attrs,
1036                                           com.android.internal.R.styleable.View,
1037                                           defStyle, 0);
1038
1039        boolean focusable = mMovement != null || mInput != null;
1040        boolean clickable = focusable;
1041        boolean longClickable = focusable;
1042
1043        n = a.getIndexCount();
1044        for (int i = 0; i < n; i++) {
1045            int attr = a.getIndex(i);
1046
1047            switch (attr) {
1048            case com.android.internal.R.styleable.View_focusable:
1049                focusable = a.getBoolean(attr, focusable);
1050                break;
1051
1052            case com.android.internal.R.styleable.View_clickable:
1053                clickable = a.getBoolean(attr, clickable);
1054                break;
1055
1056            case com.android.internal.R.styleable.View_longClickable:
1057                longClickable = a.getBoolean(attr, longClickable);
1058                break;
1059            }
1060        }
1061        a.recycle();
1062
1063        setFocusable(focusable);
1064        setClickable(clickable);
1065        setLongClickable(longClickable);
1066
1067        prepareCursorControllers();
1068
1069        final ViewConfiguration viewConfiguration = ViewConfiguration.get(context);
1070        final int touchSlop = viewConfiguration.getScaledTouchSlop();
1071        mSquaredTouchSlopDistance = touchSlop * touchSlop;
1072    }
1073
1074    private void setTypefaceByIndex(int typefaceIndex, int styleIndex) {
1075        Typeface tf = null;
1076        switch (typefaceIndex) {
1077            case SANS:
1078                tf = Typeface.SANS_SERIF;
1079                break;
1080
1081            case SERIF:
1082                tf = Typeface.SERIF;
1083                break;
1084
1085            case MONOSPACE:
1086                tf = Typeface.MONOSPACE;
1087                break;
1088        }
1089
1090        setTypeface(tf, styleIndex);
1091    }
1092
1093    @Override
1094    public void setEnabled(boolean enabled) {
1095        if (enabled == isEnabled()) {
1096            return;
1097        }
1098
1099        if (!enabled) {
1100            // Hide the soft input if the currently active TextView is disabled
1101            InputMethodManager imm = InputMethodManager.peekInstance();
1102            if (imm != null && imm.isActive(this)) {
1103                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1104            }
1105        }
1106        super.setEnabled(enabled);
1107    }
1108
1109    /**
1110     * Sets the typeface and style in which the text should be displayed,
1111     * and turns on the fake bold and italic bits in the Paint if the
1112     * Typeface that you provided does not have all the bits in the
1113     * style that you specified.
1114     *
1115     * @attr ref android.R.styleable#TextView_typeface
1116     * @attr ref android.R.styleable#TextView_textStyle
1117     */
1118    public void setTypeface(Typeface tf, int style) {
1119        if (style > 0) {
1120            if (tf == null) {
1121                tf = Typeface.defaultFromStyle(style);
1122            } else {
1123                tf = Typeface.create(tf, style);
1124            }
1125
1126            setTypeface(tf);
1127            // now compute what (if any) algorithmic styling is needed
1128            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1129            int need = style & ~typefaceStyle;
1130            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1131            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1132        } else {
1133            mTextPaint.setFakeBoldText(false);
1134            mTextPaint.setTextSkewX(0);
1135            setTypeface(tf);
1136        }
1137    }
1138
1139    /**
1140     * Subclasses override this to specify that they have a KeyListener
1141     * by default even if not specifically called for in the XML options.
1142     */
1143    protected boolean getDefaultEditable() {
1144        return false;
1145    }
1146
1147    /**
1148     * Subclasses override this to specify a default movement method.
1149     */
1150    protected MovementMethod getDefaultMovementMethod() {
1151        return null;
1152    }
1153
1154    /**
1155     * Return the text the TextView is displaying. If setText() was called with
1156     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1157     * the return value from this method to Spannable or Editable, respectively.
1158     *
1159     * Note: The content of the return value should not be modified. If you want
1160     * a modifiable one, you should make your own copy first.
1161     */
1162    @ViewDebug.CapturedViewProperty
1163    public CharSequence getText() {
1164        return mText;
1165    }
1166
1167    /**
1168     * Returns the length, in characters, of the text managed by this TextView
1169     */
1170    public int length() {
1171        return mText.length();
1172    }
1173
1174    /**
1175     * Return the text the TextView is displaying as an Editable object.  If
1176     * the text is not editable, null is returned.
1177     *
1178     * @see #getText
1179     */
1180    public Editable getEditableText() {
1181        return (mText instanceof Editable) ? (Editable)mText : null;
1182    }
1183
1184    /**
1185     * @return the height of one standard line in pixels.  Note that markup
1186     * within the text can cause individual lines to be taller or shorter
1187     * than this height, and the layout may contain additional first-
1188     * or last-line padding.
1189     */
1190    public int getLineHeight() {
1191        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1192    }
1193
1194    /**
1195     * @return the Layout that is currently being used to display the text.
1196     * This can be null if the text or width has recently changes.
1197     */
1198    public final Layout getLayout() {
1199        return mLayout;
1200    }
1201
1202    /**
1203     * @return the current key listener for this TextView.
1204     * This will frequently be null for non-EditText TextViews.
1205     */
1206    public final KeyListener getKeyListener() {
1207        return mInput;
1208    }
1209
1210    /**
1211     * Sets the key listener to be used with this TextView.  This can be null
1212     * to disallow user input.  Note that this method has significant and
1213     * subtle interactions with soft keyboards and other input method:
1214     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1215     * for important details.  Calling this method will replace the current
1216     * content type of the text view with the content type returned by the
1217     * key listener.
1218     * <p>
1219     * Be warned that if you want a TextView with a key listener or movement
1220     * method not to be focusable, or if you want a TextView without a
1221     * key listener or movement method to be focusable, you must call
1222     * {@link #setFocusable} again after calling this to get the focusability
1223     * back the way you want it.
1224     *
1225     * @attr ref android.R.styleable#TextView_numeric
1226     * @attr ref android.R.styleable#TextView_digits
1227     * @attr ref android.R.styleable#TextView_phoneNumber
1228     * @attr ref android.R.styleable#TextView_inputMethod
1229     * @attr ref android.R.styleable#TextView_capitalize
1230     * @attr ref android.R.styleable#TextView_autoText
1231     */
1232    public void setKeyListener(KeyListener input) {
1233        setKeyListenerOnly(input);
1234        fixFocusableAndClickableSettings();
1235
1236        if (input != null) {
1237            try {
1238                mInputType = mInput.getInputType();
1239            } catch (IncompatibleClassChangeError e) {
1240                mInputType = EditorInfo.TYPE_CLASS_TEXT;
1241            }
1242            // Change inputType, without affecting transformation.
1243            // No need to applySingleLine since mSingleLine is unchanged.
1244            setInputTypeSingleLine(mSingleLine);
1245        } else {
1246            mInputType = EditorInfo.TYPE_NULL;
1247        }
1248
1249        InputMethodManager imm = InputMethodManager.peekInstance();
1250        if (imm != null) imm.restartInput(this);
1251    }
1252
1253    private void setKeyListenerOnly(KeyListener input) {
1254        mInput = input;
1255        if (mInput != null && !(mText instanceof Editable))
1256            setText(mText);
1257
1258        setFilters((Editable) mText, mFilters);
1259    }
1260
1261    /**
1262     * @return the movement method being used for this TextView.
1263     * This will frequently be null for non-EditText TextViews.
1264     */
1265    public final MovementMethod getMovementMethod() {
1266        return mMovement;
1267    }
1268
1269    /**
1270     * Sets the movement method (arrow key handler) to be used for
1271     * this TextView.  This can be null to disallow using the arrow keys
1272     * to move the cursor or scroll the view.
1273     * <p>
1274     * Be warned that if you want a TextView with a key listener or movement
1275     * method not to be focusable, or if you want a TextView without a
1276     * key listener or movement method to be focusable, you must call
1277     * {@link #setFocusable} again after calling this to get the focusability
1278     * back the way you want it.
1279     */
1280    public final void setMovementMethod(MovementMethod movement) {
1281        mMovement = movement;
1282
1283        if (mMovement != null && !(mText instanceof Spannable))
1284            setText(mText);
1285
1286        fixFocusableAndClickableSettings();
1287
1288        // SelectionModifierCursorController depends on textCanBeSelected, which depends on mMovement
1289        prepareCursorControllers();
1290    }
1291
1292    private void fixFocusableAndClickableSettings() {
1293        if ((mMovement != null) || mInput != null) {
1294            setFocusable(true);
1295            setClickable(true);
1296            setLongClickable(true);
1297        } else {
1298            setFocusable(false);
1299            setClickable(false);
1300            setLongClickable(false);
1301        }
1302    }
1303
1304    /**
1305     * @return the current transformation method for this TextView.
1306     * This will frequently be null except for single-line and password
1307     * fields.
1308     */
1309    public final TransformationMethod getTransformationMethod() {
1310        return mTransformation;
1311    }
1312
1313    /**
1314     * Sets the transformation that is applied to the text that this
1315     * TextView is displaying.
1316     *
1317     * @attr ref android.R.styleable#TextView_password
1318     * @attr ref android.R.styleable#TextView_singleLine
1319     */
1320    public final void setTransformationMethod(TransformationMethod method) {
1321        if (method == mTransformation) {
1322            // Avoid the setText() below if the transformation is
1323            // the same.
1324            return;
1325        }
1326        if (mTransformation != null) {
1327            if (mText instanceof Spannable) {
1328                ((Spannable) mText).removeSpan(mTransformation);
1329            }
1330        }
1331
1332        mTransformation = method;
1333
1334        setText(mText);
1335    }
1336
1337    /**
1338     * Returns the top padding of the view, plus space for the top
1339     * Drawable if any.
1340     */
1341    public int getCompoundPaddingTop() {
1342        final Drawables dr = mDrawables;
1343        if (dr == null || dr.mDrawableTop == null) {
1344            return mPaddingTop;
1345        } else {
1346            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1347        }
1348    }
1349
1350    /**
1351     * Returns the bottom padding of the view, plus space for the bottom
1352     * Drawable if any.
1353     */
1354    public int getCompoundPaddingBottom() {
1355        final Drawables dr = mDrawables;
1356        if (dr == null || dr.mDrawableBottom == null) {
1357            return mPaddingBottom;
1358        } else {
1359            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1360        }
1361    }
1362
1363    /**
1364     * Returns the left padding of the view, plus space for the left
1365     * Drawable if any.
1366     */
1367    public int getCompoundPaddingLeft() {
1368        final Drawables dr = mDrawables;
1369        if (dr == null || dr.mDrawableLeft == null) {
1370            return mPaddingLeft;
1371        } else {
1372            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1373        }
1374    }
1375
1376    /**
1377     * Returns the right padding of the view, plus space for the right
1378     * Drawable if any.
1379     */
1380    public int getCompoundPaddingRight() {
1381        final Drawables dr = mDrawables;
1382        if (dr == null || dr.mDrawableRight == null) {
1383            return mPaddingRight;
1384        } else {
1385            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1386        }
1387    }
1388
1389    /**
1390     * Returns the extended top padding of the view, including both the
1391     * top Drawable if any and any extra space to keep more than maxLines
1392     * of text from showing.  It is only valid to call this after measuring.
1393     */
1394    public int getExtendedPaddingTop() {
1395        if (mMaxMode != LINES) {
1396            return getCompoundPaddingTop();
1397        }
1398
1399        if (mLayout.getLineCount() <= mMaximum) {
1400            return getCompoundPaddingTop();
1401        }
1402
1403        int top = getCompoundPaddingTop();
1404        int bottom = getCompoundPaddingBottom();
1405        int viewht = getHeight() - top - bottom;
1406        int layoutht = mLayout.getLineTop(mMaximum);
1407
1408        if (layoutht >= viewht) {
1409            return top;
1410        }
1411
1412        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1413        if (gravity == Gravity.TOP) {
1414            return top;
1415        } else if (gravity == Gravity.BOTTOM) {
1416            return top + viewht - layoutht;
1417        } else { // (gravity == Gravity.CENTER_VERTICAL)
1418            return top + (viewht - layoutht) / 2;
1419        }
1420    }
1421
1422    /**
1423     * Returns the extended bottom padding of the view, including both the
1424     * bottom Drawable if any and any extra space to keep more than maxLines
1425     * of text from showing.  It is only valid to call this after measuring.
1426     */
1427    public int getExtendedPaddingBottom() {
1428        if (mMaxMode != LINES) {
1429            return getCompoundPaddingBottom();
1430        }
1431
1432        if (mLayout.getLineCount() <= mMaximum) {
1433            return getCompoundPaddingBottom();
1434        }
1435
1436        int top = getCompoundPaddingTop();
1437        int bottom = getCompoundPaddingBottom();
1438        int viewht = getHeight() - top - bottom;
1439        int layoutht = mLayout.getLineTop(mMaximum);
1440
1441        if (layoutht >= viewht) {
1442            return bottom;
1443        }
1444
1445        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1446        if (gravity == Gravity.TOP) {
1447            return bottom + viewht - layoutht;
1448        } else if (gravity == Gravity.BOTTOM) {
1449            return bottom;
1450        } else { // (gravity == Gravity.CENTER_VERTICAL)
1451            return bottom + (viewht - layoutht) / 2;
1452        }
1453    }
1454
1455    /**
1456     * Returns the total left padding of the view, including the left
1457     * Drawable if any.
1458     */
1459    public int getTotalPaddingLeft() {
1460        return getCompoundPaddingLeft();
1461    }
1462
1463    /**
1464     * Returns the total right padding of the view, including the right
1465     * Drawable if any.
1466     */
1467    public int getTotalPaddingRight() {
1468        return getCompoundPaddingRight();
1469    }
1470
1471    /**
1472     * Returns the total top padding of the view, including the top
1473     * Drawable if any, the extra space to keep more than maxLines
1474     * from showing, and the vertical offset for gravity, if any.
1475     */
1476    public int getTotalPaddingTop() {
1477        return getExtendedPaddingTop() + getVerticalOffset(true);
1478    }
1479
1480    /**
1481     * Returns the total bottom padding of the view, including the bottom
1482     * Drawable if any, the extra space to keep more than maxLines
1483     * from showing, and the vertical offset for gravity, if any.
1484     */
1485    public int getTotalPaddingBottom() {
1486        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1487    }
1488
1489    /**
1490     * Sets the Drawables (if any) to appear to the left of, above,
1491     * to the right of, and below the text.  Use null if you do not
1492     * want a Drawable there.  The Drawables must already have had
1493     * {@link Drawable#setBounds} called.
1494     *
1495     * @attr ref android.R.styleable#TextView_drawableLeft
1496     * @attr ref android.R.styleable#TextView_drawableTop
1497     * @attr ref android.R.styleable#TextView_drawableRight
1498     * @attr ref android.R.styleable#TextView_drawableBottom
1499     */
1500    public void setCompoundDrawables(Drawable left, Drawable top,
1501                                     Drawable right, Drawable bottom) {
1502        Drawables dr = mDrawables;
1503
1504        final boolean drawables = left != null || top != null
1505                || right != null || bottom != null;
1506
1507        if (!drawables) {
1508            // Clearing drawables...  can we free the data structure?
1509            if (dr != null) {
1510                if (dr.mDrawablePadding == 0) {
1511                    mDrawables = null;
1512                } else {
1513                    // We need to retain the last set padding, so just clear
1514                    // out all of the fields in the existing structure.
1515                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
1516                    dr.mDrawableLeft = null;
1517                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1518                    dr.mDrawableTop = null;
1519                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
1520                    dr.mDrawableRight = null;
1521                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1522                    dr.mDrawableBottom = null;
1523                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1524                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1525                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1526                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1527                }
1528            }
1529        } else {
1530            if (dr == null) {
1531                mDrawables = dr = new Drawables();
1532            }
1533
1534            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
1535                dr.mDrawableLeft.setCallback(null);
1536            }
1537            dr.mDrawableLeft = left;
1538
1539            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1540                dr.mDrawableTop.setCallback(null);
1541            }
1542            dr.mDrawableTop = top;
1543
1544            if (dr.mDrawableRight != right && dr.mDrawableRight != null) {
1545                dr.mDrawableRight.setCallback(null);
1546            }
1547            dr.mDrawableRight = right;
1548
1549            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1550                dr.mDrawableBottom.setCallback(null);
1551            }
1552            dr.mDrawableBottom = bottom;
1553
1554            final Rect compoundRect = dr.mCompoundRect;
1555            int[] state;
1556
1557            state = getDrawableState();
1558
1559            if (left != null) {
1560                left.setState(state);
1561                left.copyBounds(compoundRect);
1562                left.setCallback(this);
1563                dr.mDrawableSizeLeft = compoundRect.width();
1564                dr.mDrawableHeightLeft = compoundRect.height();
1565            } else {
1566                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1567            }
1568
1569            if (right != null) {
1570                right.setState(state);
1571                right.copyBounds(compoundRect);
1572                right.setCallback(this);
1573                dr.mDrawableSizeRight = compoundRect.width();
1574                dr.mDrawableHeightRight = compoundRect.height();
1575            } else {
1576                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1577            }
1578
1579            if (top != null) {
1580                top.setState(state);
1581                top.copyBounds(compoundRect);
1582                top.setCallback(this);
1583                dr.mDrawableSizeTop = compoundRect.height();
1584                dr.mDrawableWidthTop = compoundRect.width();
1585            } else {
1586                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1587            }
1588
1589            if (bottom != null) {
1590                bottom.setState(state);
1591                bottom.copyBounds(compoundRect);
1592                bottom.setCallback(this);
1593                dr.mDrawableSizeBottom = compoundRect.height();
1594                dr.mDrawableWidthBottom = compoundRect.width();
1595            } else {
1596                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1597            }
1598        }
1599
1600        invalidate();
1601        requestLayout();
1602    }
1603
1604    /**
1605     * Sets the Drawables (if any) to appear to the left of, above,
1606     * to the right of, and below the text.  Use 0 if you do not
1607     * want a Drawable there. The Drawables' bounds will be set to
1608     * their intrinsic bounds.
1609     *
1610     * @param left Resource identifier of the left Drawable.
1611     * @param top Resource identifier of the top Drawable.
1612     * @param right Resource identifier of the right Drawable.
1613     * @param bottom Resource identifier of the bottom Drawable.
1614     *
1615     * @attr ref android.R.styleable#TextView_drawableLeft
1616     * @attr ref android.R.styleable#TextView_drawableTop
1617     * @attr ref android.R.styleable#TextView_drawableRight
1618     * @attr ref android.R.styleable#TextView_drawableBottom
1619     */
1620    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1621        final Resources resources = getContext().getResources();
1622        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null,
1623                top != 0 ? resources.getDrawable(top) : null,
1624                right != 0 ? resources.getDrawable(right) : null,
1625                bottom != 0 ? resources.getDrawable(bottom) : null);
1626    }
1627
1628    /**
1629     * Sets the Drawables (if any) to appear to the left of, above,
1630     * to the right of, and below the text.  Use null if you do not
1631     * want a Drawable there. The Drawables' bounds will be set to
1632     * their intrinsic bounds.
1633     *
1634     * @attr ref android.R.styleable#TextView_drawableLeft
1635     * @attr ref android.R.styleable#TextView_drawableTop
1636     * @attr ref android.R.styleable#TextView_drawableRight
1637     * @attr ref android.R.styleable#TextView_drawableBottom
1638     */
1639    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1640            Drawable right, Drawable bottom) {
1641
1642        if (left != null) {
1643            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1644        }
1645        if (right != null) {
1646            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1647        }
1648        if (top != null) {
1649            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1650        }
1651        if (bottom != null) {
1652            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
1653        }
1654        setCompoundDrawables(left, top, right, bottom);
1655    }
1656
1657    /**
1658     * Returns drawables for the left, top, right, and bottom borders.
1659     */
1660    public Drawable[] getCompoundDrawables() {
1661        final Drawables dr = mDrawables;
1662        if (dr != null) {
1663            return new Drawable[] {
1664                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
1665            };
1666        } else {
1667            return new Drawable[] { null, null, null, null };
1668        }
1669    }
1670
1671    /**
1672     * Sets the size of the padding between the compound drawables and
1673     * the text.
1674     *
1675     * @attr ref android.R.styleable#TextView_drawablePadding
1676     */
1677    public void setCompoundDrawablePadding(int pad) {
1678        Drawables dr = mDrawables;
1679        if (pad == 0) {
1680            if (dr != null) {
1681                dr.mDrawablePadding = pad;
1682            }
1683        } else {
1684            if (dr == null) {
1685                mDrawables = dr = new Drawables();
1686            }
1687            dr.mDrawablePadding = pad;
1688        }
1689
1690        invalidate();
1691        requestLayout();
1692    }
1693
1694    /**
1695     * Returns the padding between the compound drawables and the text.
1696     */
1697    public int getCompoundDrawablePadding() {
1698        final Drawables dr = mDrawables;
1699        return dr != null ? dr.mDrawablePadding : 0;
1700    }
1701
1702    @Override
1703    public void setPadding(int left, int top, int right, int bottom) {
1704        if (left != mPaddingLeft ||
1705            right != mPaddingRight ||
1706            top != mPaddingTop ||
1707            bottom != mPaddingBottom) {
1708            nullLayouts();
1709        }
1710
1711        // the super call will requestLayout()
1712        super.setPadding(left, top, right, bottom);
1713        invalidate();
1714    }
1715
1716    /**
1717     * Gets the autolink mask of the text.  See {@link
1718     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1719     * possible values.
1720     *
1721     * @attr ref android.R.styleable#TextView_autoLink
1722     */
1723    public final int getAutoLinkMask() {
1724        return mAutoLinkMask;
1725    }
1726
1727    /**
1728     * Sets the text color, size, style, hint color, and highlight color
1729     * from the specified TextAppearance resource.
1730     */
1731    public void setTextAppearance(Context context, int resid) {
1732        TypedArray appearance =
1733            context.obtainStyledAttributes(resid,
1734                                           com.android.internal.R.styleable.TextAppearance);
1735
1736        int color;
1737        ColorStateList colors;
1738        int ts;
1739
1740        color = appearance.getColor(com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
1741        if (color != 0) {
1742            setHighlightColor(color);
1743        }
1744
1745        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1746                                              TextAppearance_textColor);
1747        if (colors != null) {
1748            setTextColor(colors);
1749        }
1750
1751        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
1752                                              TextAppearance_textSize, 0);
1753        if (ts != 0) {
1754            setRawTextSize(ts);
1755        }
1756
1757        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1758                                              TextAppearance_textColorHint);
1759        if (colors != null) {
1760            setHintTextColor(colors);
1761        }
1762
1763        colors = appearance.getColorStateList(com.android.internal.R.styleable.
1764                                              TextAppearance_textColorLink);
1765        if (colors != null) {
1766            setLinkTextColor(colors);
1767        }
1768
1769        int typefaceIndex, styleIndex;
1770
1771        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
1772                                          TextAppearance_typeface, -1);
1773        styleIndex = appearance.getInt(com.android.internal.R.styleable.
1774                                       TextAppearance_textStyle, -1);
1775
1776        setTypefaceByIndex(typefaceIndex, styleIndex);
1777
1778        appearance.recycle();
1779    }
1780
1781    /**
1782     * @return the size (in pixels) of the default text size in this TextView.
1783     */
1784    public float getTextSize() {
1785        return mTextPaint.getTextSize();
1786    }
1787
1788    /**
1789     * Set the default text size to the given value, interpreted as "scaled
1790     * pixel" units.  This size is adjusted based on the current density and
1791     * user font size preference.
1792     *
1793     * @param size The scaled pixel size.
1794     *
1795     * @attr ref android.R.styleable#TextView_textSize
1796     */
1797    @android.view.RemotableViewMethod
1798    public void setTextSize(float size) {
1799        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
1800    }
1801
1802    /**
1803     * Set the default text size to a given unit and value.  See {@link
1804     * TypedValue} for the possible dimension units.
1805     *
1806     * @param unit The desired dimension unit.
1807     * @param size The desired size in the given units.
1808     *
1809     * @attr ref android.R.styleable#TextView_textSize
1810     */
1811    public void setTextSize(int unit, float size) {
1812        Context c = getContext();
1813        Resources r;
1814
1815        if (c == null)
1816            r = Resources.getSystem();
1817        else
1818            r = c.getResources();
1819
1820        setRawTextSize(TypedValue.applyDimension(
1821            unit, size, r.getDisplayMetrics()));
1822    }
1823
1824    private void setRawTextSize(float size) {
1825        if (size != mTextPaint.getTextSize()) {
1826            mTextPaint.setTextSize(size);
1827
1828            if (mLayout != null) {
1829                nullLayouts();
1830                requestLayout();
1831                invalidate();
1832            }
1833        }
1834    }
1835
1836    /**
1837     * @return the extent by which text is currently being stretched
1838     * horizontally.  This will usually be 1.
1839     */
1840    public float getTextScaleX() {
1841        return mTextPaint.getTextScaleX();
1842    }
1843
1844    /**
1845     * Sets the extent by which text should be stretched horizontally.
1846     *
1847     * @attr ref android.R.styleable#TextView_textScaleX
1848     */
1849    @android.view.RemotableViewMethod
1850    public void setTextScaleX(float size) {
1851        if (size != mTextPaint.getTextScaleX()) {
1852            mUserSetTextScaleX = true;
1853            mTextPaint.setTextScaleX(size);
1854
1855            if (mLayout != null) {
1856                nullLayouts();
1857                requestLayout();
1858                invalidate();
1859            }
1860        }
1861    }
1862
1863    /**
1864     * Sets the typeface and style in which the text should be displayed.
1865     * Note that not all Typeface families actually have bold and italic
1866     * variants, so you may need to use
1867     * {@link #setTypeface(Typeface, int)} to get the appearance
1868     * that you actually want.
1869     *
1870     * @attr ref android.R.styleable#TextView_typeface
1871     * @attr ref android.R.styleable#TextView_textStyle
1872     */
1873    public void setTypeface(Typeface tf) {
1874        if (mTextPaint.getTypeface() != tf) {
1875            mTextPaint.setTypeface(tf);
1876
1877            if (mLayout != null) {
1878                nullLayouts();
1879                requestLayout();
1880                invalidate();
1881            }
1882        }
1883    }
1884
1885    /**
1886     * @return the current typeface and style in which the text is being
1887     * displayed.
1888     */
1889    public Typeface getTypeface() {
1890        return mTextPaint.getTypeface();
1891    }
1892
1893    /**
1894     * Sets the text color for all the states (normal, selected,
1895     * focused) to be this color.
1896     *
1897     * @attr ref android.R.styleable#TextView_textColor
1898     */
1899    @android.view.RemotableViewMethod
1900    public void setTextColor(int color) {
1901        mTextColor = ColorStateList.valueOf(color);
1902        updateTextColors();
1903    }
1904
1905    /**
1906     * Sets the text color.
1907     *
1908     * @attr ref android.R.styleable#TextView_textColor
1909     */
1910    public void setTextColor(ColorStateList colors) {
1911        if (colors == null) {
1912            throw new NullPointerException();
1913        }
1914
1915        mTextColor = colors;
1916        updateTextColors();
1917    }
1918
1919    /**
1920     * Return the set of text colors.
1921     *
1922     * @return Returns the set of text colors.
1923     */
1924    public final ColorStateList getTextColors() {
1925        return mTextColor;
1926    }
1927
1928    /**
1929     * <p>Return the current color selected for normal text.</p>
1930     *
1931     * @return Returns the current text color.
1932     */
1933    public final int getCurrentTextColor() {
1934        return mCurTextColor;
1935    }
1936
1937    /**
1938     * Sets the color used to display the selection highlight.
1939     *
1940     * @attr ref android.R.styleable#TextView_textColorHighlight
1941     */
1942    @android.view.RemotableViewMethod
1943    public void setHighlightColor(int color) {
1944        if (mHighlightColor != color) {
1945            mHighlightColor = color;
1946            invalidate();
1947        }
1948    }
1949
1950    /**
1951     * Gives the text a shadow of the specified radius and color, the specified
1952     * distance from its normal position.
1953     *
1954     * @attr ref android.R.styleable#TextView_shadowColor
1955     * @attr ref android.R.styleable#TextView_shadowDx
1956     * @attr ref android.R.styleable#TextView_shadowDy
1957     * @attr ref android.R.styleable#TextView_shadowRadius
1958     */
1959    public void setShadowLayer(float radius, float dx, float dy, int color) {
1960        mTextPaint.setShadowLayer(radius, dx, dy, color);
1961
1962        mShadowRadius = radius;
1963        mShadowDx = dx;
1964        mShadowDy = dy;
1965
1966        invalidate();
1967    }
1968
1969    /**
1970     * @return the base paint used for the text.  Please use this only to
1971     * consult the Paint's properties and not to change them.
1972     */
1973    public TextPaint getPaint() {
1974        return mTextPaint;
1975    }
1976
1977    /**
1978     * Sets the autolink mask of the text.  See {@link
1979     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
1980     * possible values.
1981     *
1982     * @attr ref android.R.styleable#TextView_autoLink
1983     */
1984    @android.view.RemotableViewMethod
1985    public final void setAutoLinkMask(int mask) {
1986        mAutoLinkMask = mask;
1987    }
1988
1989    /**
1990     * Sets whether the movement method will automatically be set to
1991     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
1992     * set to nonzero and links are detected in {@link #setText}.
1993     * The default is true.
1994     *
1995     * @attr ref android.R.styleable#TextView_linksClickable
1996     */
1997    @android.view.RemotableViewMethod
1998    public final void setLinksClickable(boolean whether) {
1999        mLinksClickable = whether;
2000    }
2001
2002    /**
2003     * Returns whether the movement method will automatically be set to
2004     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2005     * set to nonzero and links are detected in {@link #setText}.
2006     * The default is true.
2007     *
2008     * @attr ref android.R.styleable#TextView_linksClickable
2009     */
2010    public final boolean getLinksClickable() {
2011        return mLinksClickable;
2012    }
2013
2014    /**
2015     * Returns the list of URLSpans attached to the text
2016     * (by {@link Linkify} or otherwise) if any.  You can call
2017     * {@link URLSpan#getURL} on them to find where they link to
2018     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
2019     * to find the region of the text they are attached to.
2020     */
2021    public URLSpan[] getUrls() {
2022        if (mText instanceof Spanned) {
2023            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
2024        } else {
2025            return new URLSpan[0];
2026        }
2027    }
2028
2029    /**
2030     * Sets the color of the hint text.
2031     *
2032     * @attr ref android.R.styleable#TextView_textColorHint
2033     */
2034    @android.view.RemotableViewMethod
2035    public final void setHintTextColor(int color) {
2036        mHintTextColor = ColorStateList.valueOf(color);
2037        updateTextColors();
2038    }
2039
2040    /**
2041     * Sets the color of the hint text.
2042     *
2043     * @attr ref android.R.styleable#TextView_textColorHint
2044     */
2045    public final void setHintTextColor(ColorStateList colors) {
2046        mHintTextColor = colors;
2047        updateTextColors();
2048    }
2049
2050    /**
2051     * <p>Return the color used to paint the hint text.</p>
2052     *
2053     * @return Returns the list of hint text colors.
2054     */
2055    public final ColorStateList getHintTextColors() {
2056        return mHintTextColor;
2057    }
2058
2059    /**
2060     * <p>Return the current color selected to paint the hint text.</p>
2061     *
2062     * @return Returns the current hint text color.
2063     */
2064    public final int getCurrentHintTextColor() {
2065        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
2066    }
2067
2068    /**
2069     * Sets the color of links in the text.
2070     *
2071     * @attr ref android.R.styleable#TextView_textColorLink
2072     */
2073    @android.view.RemotableViewMethod
2074    public final void setLinkTextColor(int color) {
2075        mLinkTextColor = ColorStateList.valueOf(color);
2076        updateTextColors();
2077    }
2078
2079    /**
2080     * Sets the color of links in the text.
2081     *
2082     * @attr ref android.R.styleable#TextView_textColorLink
2083     */
2084    public final void setLinkTextColor(ColorStateList colors) {
2085        mLinkTextColor = colors;
2086        updateTextColors();
2087    }
2088
2089    /**
2090     * <p>Returns the color used to paint links in the text.</p>
2091     *
2092     * @return Returns the list of link text colors.
2093     */
2094    public final ColorStateList getLinkTextColors() {
2095        return mLinkTextColor;
2096    }
2097
2098    /**
2099     * Sets the horizontal alignment of the text and the
2100     * vertical gravity that will be used when there is extra space
2101     * in the TextView beyond what is required for the text itself.
2102     *
2103     * @see android.view.Gravity
2104     * @attr ref android.R.styleable#TextView_gravity
2105     */
2106    public void setGravity(int gravity) {
2107        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
2108            gravity |= Gravity.START;
2109        }
2110        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
2111            gravity |= Gravity.TOP;
2112        }
2113
2114        boolean newLayout = false;
2115
2116        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
2117            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
2118            newLayout = true;
2119        }
2120
2121        if (gravity != mGravity) {
2122            invalidate();
2123        }
2124
2125        mGravity = gravity;
2126
2127        if (mLayout != null && newLayout) {
2128            // XXX this is heavy-handed because no actual content changes.
2129            int want = mLayout.getWidth();
2130            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
2131
2132            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
2133                          mRight - mLeft - getCompoundPaddingLeft() -
2134                          getCompoundPaddingRight(), true);
2135        }
2136    }
2137
2138    /**
2139     * Returns the horizontal and vertical alignment of this TextView.
2140     *
2141     * @see android.view.Gravity
2142     * @attr ref android.R.styleable#TextView_gravity
2143     */
2144    public int getGravity() {
2145        return mGravity;
2146    }
2147
2148    /**
2149     * @return the flags on the Paint being used to display the text.
2150     * @see Paint#getFlags
2151     */
2152    public int getPaintFlags() {
2153        return mTextPaint.getFlags();
2154    }
2155
2156    /**
2157     * Sets flags on the Paint being used to display the text and
2158     * reflows the text if they are different from the old flags.
2159     * @see Paint#setFlags
2160     */
2161    @android.view.RemotableViewMethod
2162    public void setPaintFlags(int flags) {
2163        if (mTextPaint.getFlags() != flags) {
2164            mTextPaint.setFlags(flags);
2165
2166            if (mLayout != null) {
2167                nullLayouts();
2168                requestLayout();
2169                invalidate();
2170            }
2171        }
2172    }
2173
2174    /**
2175     * Sets whether the text should be allowed to be wider than the
2176     * View is.  If false, it will be wrapped to the width of the View.
2177     *
2178     * @attr ref android.R.styleable#TextView_scrollHorizontally
2179     */
2180    public void setHorizontallyScrolling(boolean whether) {
2181        mHorizontallyScrolling = whether;
2182
2183        if (mLayout != null) {
2184            nullLayouts();
2185            requestLayout();
2186            invalidate();
2187        }
2188    }
2189
2190    /**
2191     * Makes the TextView at least this many lines tall.
2192     *
2193     * Setting this value overrides any other (minimum) height setting. A single line TextView will
2194     * set this value to 1.
2195     *
2196     * @attr ref android.R.styleable#TextView_minLines
2197     */
2198    @android.view.RemotableViewMethod
2199    public void setMinLines(int minlines) {
2200        mMinimum = minlines;
2201        mMinMode = LINES;
2202
2203        requestLayout();
2204        invalidate();
2205    }
2206
2207    /**
2208     * Makes the TextView at least this many pixels tall.
2209     *
2210     * Setting this value overrides any other (minimum) number of lines setting.
2211     *
2212     * @attr ref android.R.styleable#TextView_minHeight
2213     */
2214    @android.view.RemotableViewMethod
2215    public void setMinHeight(int minHeight) {
2216        mMinimum = minHeight;
2217        mMinMode = PIXELS;
2218
2219        requestLayout();
2220        invalidate();
2221    }
2222
2223    /**
2224     * Makes the TextView at most this many lines tall.
2225     *
2226     * Setting this value overrides any other (maximum) height setting.
2227     *
2228     * @attr ref android.R.styleable#TextView_maxLines
2229     */
2230    @android.view.RemotableViewMethod
2231    public void setMaxLines(int maxlines) {
2232        mMaximum = maxlines;
2233        mMaxMode = LINES;
2234
2235        requestLayout();
2236        invalidate();
2237    }
2238
2239    /**
2240     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
2241     * {@link #setMaxLines(int)} method.
2242     *
2243     * Setting this value overrides any other (maximum) number of lines setting.
2244     *
2245     * @attr ref android.R.styleable#TextView_maxHeight
2246     */
2247    @android.view.RemotableViewMethod
2248    public void setMaxHeight(int maxHeight) {
2249        mMaximum = maxHeight;
2250        mMaxMode = PIXELS;
2251
2252        requestLayout();
2253        invalidate();
2254    }
2255
2256    /**
2257     * Makes the TextView exactly this many lines tall.
2258     *
2259     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2260     * height setting. A single line TextView will set this value to 1.
2261     *
2262     * @attr ref android.R.styleable#TextView_lines
2263     */
2264    @android.view.RemotableViewMethod
2265    public void setLines(int lines) {
2266        mMaximum = mMinimum = lines;
2267        mMaxMode = mMinMode = LINES;
2268
2269        requestLayout();
2270        invalidate();
2271    }
2272
2273    /**
2274     * Makes the TextView exactly this many pixels tall.
2275     * You could do the same thing by specifying this number in the
2276     * LayoutParams.
2277     *
2278     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2279     * height setting.
2280     *
2281     * @attr ref android.R.styleable#TextView_height
2282     */
2283    @android.view.RemotableViewMethod
2284    public void setHeight(int pixels) {
2285        mMaximum = mMinimum = pixels;
2286        mMaxMode = mMinMode = PIXELS;
2287
2288        requestLayout();
2289        invalidate();
2290    }
2291
2292    /**
2293     * Makes the TextView at least this many ems wide
2294     *
2295     * @attr ref android.R.styleable#TextView_minEms
2296     */
2297    @android.view.RemotableViewMethod
2298    public void setMinEms(int minems) {
2299        mMinWidth = minems;
2300        mMinWidthMode = EMS;
2301
2302        requestLayout();
2303        invalidate();
2304    }
2305
2306    /**
2307     * Makes the TextView at least this many pixels wide
2308     *
2309     * @attr ref android.R.styleable#TextView_minWidth
2310     */
2311    @android.view.RemotableViewMethod
2312    public void setMinWidth(int minpixels) {
2313        mMinWidth = minpixels;
2314        mMinWidthMode = PIXELS;
2315
2316        requestLayout();
2317        invalidate();
2318    }
2319
2320    /**
2321     * Makes the TextView at most this many ems wide
2322     *
2323     * @attr ref android.R.styleable#TextView_maxEms
2324     */
2325    @android.view.RemotableViewMethod
2326    public void setMaxEms(int maxems) {
2327        mMaxWidth = maxems;
2328        mMaxWidthMode = EMS;
2329
2330        requestLayout();
2331        invalidate();
2332    }
2333
2334    /**
2335     * Makes the TextView at most this many pixels wide
2336     *
2337     * @attr ref android.R.styleable#TextView_maxWidth
2338     */
2339    @android.view.RemotableViewMethod
2340    public void setMaxWidth(int maxpixels) {
2341        mMaxWidth = maxpixels;
2342        mMaxWidthMode = PIXELS;
2343
2344        requestLayout();
2345        invalidate();
2346    }
2347
2348    /**
2349     * Makes the TextView exactly this many ems wide
2350     *
2351     * @attr ref android.R.styleable#TextView_ems
2352     */
2353    @android.view.RemotableViewMethod
2354    public void setEms(int ems) {
2355        mMaxWidth = mMinWidth = ems;
2356        mMaxWidthMode = mMinWidthMode = EMS;
2357
2358        requestLayout();
2359        invalidate();
2360    }
2361
2362    /**
2363     * Makes the TextView exactly this many pixels wide.
2364     * You could do the same thing by specifying this number in the
2365     * LayoutParams.
2366     *
2367     * @attr ref android.R.styleable#TextView_width
2368     */
2369    @android.view.RemotableViewMethod
2370    public void setWidth(int pixels) {
2371        mMaxWidth = mMinWidth = pixels;
2372        mMaxWidthMode = mMinWidthMode = PIXELS;
2373
2374        requestLayout();
2375        invalidate();
2376    }
2377
2378
2379    /**
2380     * Sets line spacing for this TextView.  Each line will have its height
2381     * multiplied by <code>mult</code> and have <code>add</code> added to it.
2382     *
2383     * @attr ref android.R.styleable#TextView_lineSpacingExtra
2384     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
2385     */
2386    public void setLineSpacing(float add, float mult) {
2387        mSpacingMult = mult;
2388        mSpacingAdd = add;
2389
2390        if (mLayout != null) {
2391            nullLayouts();
2392            requestLayout();
2393            invalidate();
2394        }
2395    }
2396
2397    /**
2398     * Convenience method: Append the specified text to the TextView's
2399     * display buffer, upgrading it to BufferType.EDITABLE if it was
2400     * not already editable.
2401     */
2402    public final void append(CharSequence text) {
2403        append(text, 0, text.length());
2404    }
2405
2406    /**
2407     * Convenience method: Append the specified text slice to the TextView's
2408     * display buffer, upgrading it to BufferType.EDITABLE if it was
2409     * not already editable.
2410     */
2411    public void append(CharSequence text, int start, int end) {
2412        if (!(mText instanceof Editable)) {
2413            setText(mText, BufferType.EDITABLE);
2414        }
2415
2416        ((Editable) mText).append(text, start, end);
2417    }
2418
2419    private void updateTextColors() {
2420        boolean inval = false;
2421        int color = mTextColor.getColorForState(getDrawableState(), 0);
2422        if (color != mCurTextColor) {
2423            mCurTextColor = color;
2424            inval = true;
2425        }
2426        if (mLinkTextColor != null) {
2427            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
2428            if (color != mTextPaint.linkColor) {
2429                mTextPaint.linkColor = color;
2430                inval = true;
2431            }
2432        }
2433        if (mHintTextColor != null) {
2434            color = mHintTextColor.getColorForState(getDrawableState(), 0);
2435            if (color != mCurHintTextColor && mText.length() == 0) {
2436                mCurHintTextColor = color;
2437                inval = true;
2438            }
2439        }
2440        if (inval) {
2441            invalidate();
2442        }
2443    }
2444
2445    @Override
2446    protected void drawableStateChanged() {
2447        super.drawableStateChanged();
2448        if (mTextColor != null && mTextColor.isStateful()
2449                || (mHintTextColor != null && mHintTextColor.isStateful())
2450                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
2451            updateTextColors();
2452        }
2453
2454        final Drawables dr = mDrawables;
2455        if (dr != null) {
2456            int[] state = getDrawableState();
2457            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
2458                dr.mDrawableTop.setState(state);
2459            }
2460            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
2461                dr.mDrawableBottom.setState(state);
2462            }
2463            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
2464                dr.mDrawableLeft.setState(state);
2465            }
2466            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
2467                dr.mDrawableRight.setState(state);
2468            }
2469        }
2470    }
2471
2472    /**
2473     * User interface state that is stored by TextView for implementing
2474     * {@link View#onSaveInstanceState}.
2475     */
2476    public static class SavedState extends BaseSavedState {
2477        int selStart;
2478        int selEnd;
2479        CharSequence text;
2480        boolean frozenWithFocus;
2481        CharSequence error;
2482
2483        SavedState(Parcelable superState) {
2484            super(superState);
2485        }
2486
2487        @Override
2488        public void writeToParcel(Parcel out, int flags) {
2489            super.writeToParcel(out, flags);
2490            out.writeInt(selStart);
2491            out.writeInt(selEnd);
2492            out.writeInt(frozenWithFocus ? 1 : 0);
2493            TextUtils.writeToParcel(text, out, flags);
2494
2495            if (error == null) {
2496                out.writeInt(0);
2497            } else {
2498                out.writeInt(1);
2499                TextUtils.writeToParcel(error, out, flags);
2500            }
2501        }
2502
2503        @Override
2504        public String toString() {
2505            String str = "TextView.SavedState{"
2506                    + Integer.toHexString(System.identityHashCode(this))
2507                    + " start=" + selStart + " end=" + selEnd;
2508            if (text != null) {
2509                str += " text=" + text;
2510            }
2511            return str + "}";
2512        }
2513
2514        @SuppressWarnings("hiding")
2515        public static final Parcelable.Creator<SavedState> CREATOR
2516                = new Parcelable.Creator<SavedState>() {
2517            public SavedState createFromParcel(Parcel in) {
2518                return new SavedState(in);
2519            }
2520
2521            public SavedState[] newArray(int size) {
2522                return new SavedState[size];
2523            }
2524        };
2525
2526        private SavedState(Parcel in) {
2527            super(in);
2528            selStart = in.readInt();
2529            selEnd = in.readInt();
2530            frozenWithFocus = (in.readInt() != 0);
2531            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2532
2533            if (in.readInt() != 0) {
2534                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
2535            }
2536        }
2537    }
2538
2539    @Override
2540    public Parcelable onSaveInstanceState() {
2541        Parcelable superState = super.onSaveInstanceState();
2542
2543        // Save state if we are forced to
2544        boolean save = mFreezesText;
2545        int start = 0;
2546        int end = 0;
2547
2548        if (mText != null) {
2549            start = getSelectionStart();
2550            end = getSelectionEnd();
2551            if (start >= 0 || end >= 0) {
2552                // Or save state if there is a selection
2553                save = true;
2554            }
2555        }
2556
2557        if (save) {
2558            SavedState ss = new SavedState(superState);
2559            // XXX Should also save the current scroll position!
2560            ss.selStart = start;
2561            ss.selEnd = end;
2562
2563            if (mText instanceof Spanned) {
2564                /*
2565                 * Calling setText() strips off any ChangeWatchers;
2566                 * strip them now to avoid leaking references.
2567                 * But do it to a copy so that if there are any
2568                 * further changes to the text of this view, it
2569                 * won't get into an inconsistent state.
2570                 */
2571
2572                Spannable sp = new SpannableString(mText);
2573
2574                for (ChangeWatcher cw :
2575                     sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
2576                    sp.removeSpan(cw);
2577                }
2578
2579                // hideControllers would do it, but it gets called after this method on rotation
2580                sp.removeSpan(mSuggestionRangeSpan);
2581
2582                ss.text = sp;
2583            } else {
2584                ss.text = mText.toString();
2585            }
2586
2587            if (isFocused() && start >= 0 && end >= 0) {
2588                ss.frozenWithFocus = true;
2589            }
2590
2591            ss.error = mError;
2592
2593            return ss;
2594        }
2595
2596        return superState;
2597    }
2598
2599    @Override
2600    public void onRestoreInstanceState(Parcelable state) {
2601        if (!(state instanceof SavedState)) {
2602            super.onRestoreInstanceState(state);
2603            return;
2604        }
2605
2606        SavedState ss = (SavedState)state;
2607        super.onRestoreInstanceState(ss.getSuperState());
2608
2609        // XXX restore buffer type too, as well as lots of other stuff
2610        if (ss.text != null) {
2611            setText(ss.text);
2612        }
2613
2614        if (ss.selStart >= 0 && ss.selEnd >= 0) {
2615            if (mText instanceof Spannable) {
2616                int len = mText.length();
2617
2618                if (ss.selStart > len || ss.selEnd > len) {
2619                    String restored = "";
2620
2621                    if (ss.text != null) {
2622                        restored = "(restored) ";
2623                    }
2624
2625                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
2626                          "/" + ss.selEnd + " out of range for " + restored +
2627                          "text " + mText);
2628                } else {
2629                    Selection.setSelection((Spannable) mText, ss.selStart,
2630                                           ss.selEnd);
2631
2632                    if (ss.frozenWithFocus) {
2633                        mFrozenWithFocus = true;
2634                    }
2635                }
2636            }
2637        }
2638
2639        if (ss.error != null) {
2640            final CharSequence error = ss.error;
2641            // Display the error later, after the first layout pass
2642            post(new Runnable() {
2643                public void run() {
2644                    setError(error);
2645                }
2646            });
2647        }
2648    }
2649
2650    /**
2651     * Control whether this text view saves its entire text contents when
2652     * freezing to an icicle, in addition to dynamic state such as cursor
2653     * position.  By default this is false, not saving the text.  Set to true
2654     * if the text in the text view is not being saved somewhere else in
2655     * persistent storage (such as in a content provider) so that if the
2656     * view is later thawed the user will not lose their data.
2657     *
2658     * @param freezesText Controls whether a frozen icicle should include the
2659     * entire text data: true to include it, false to not.
2660     *
2661     * @attr ref android.R.styleable#TextView_freezesText
2662     */
2663    @android.view.RemotableViewMethod
2664    public void setFreezesText(boolean freezesText) {
2665        mFreezesText = freezesText;
2666    }
2667
2668    /**
2669     * Return whether this text view is including its entire text contents
2670     * in frozen icicles.
2671     *
2672     * @return Returns true if text is included, false if it isn't.
2673     *
2674     * @see #setFreezesText
2675     */
2676    public boolean getFreezesText() {
2677        return mFreezesText;
2678    }
2679
2680    ///////////////////////////////////////////////////////////////////////////
2681
2682    /**
2683     * Sets the Factory used to create new Editables.
2684     */
2685    public final void setEditableFactory(Editable.Factory factory) {
2686        mEditableFactory = factory;
2687        setText(mText);
2688    }
2689
2690    /**
2691     * Sets the Factory used to create new Spannables.
2692     */
2693    public final void setSpannableFactory(Spannable.Factory factory) {
2694        mSpannableFactory = factory;
2695        setText(mText);
2696    }
2697
2698    /**
2699     * Sets the string value of the TextView. TextView <em>does not</em> accept
2700     * HTML-like formatting, which you can do with text strings in XML resource files.
2701     * To style your strings, attach android.text.style.* objects to a
2702     * {@link android.text.SpannableString SpannableString}, or see the
2703     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
2704     * Available Resource Types</a> documentation for an example of setting
2705     * formatted text in the XML resource file.
2706     *
2707     * @attr ref android.R.styleable#TextView_text
2708     */
2709    @android.view.RemotableViewMethod
2710    public final void setText(CharSequence text) {
2711        setText(text, mBufferType);
2712    }
2713
2714    /**
2715     * Like {@link #setText(CharSequence)},
2716     * except that the cursor position (if any) is retained in the new text.
2717     *
2718     * @param text The new text to place in the text view.
2719     *
2720     * @see #setText(CharSequence)
2721     */
2722    @android.view.RemotableViewMethod
2723    public final void setTextKeepState(CharSequence text) {
2724        setTextKeepState(text, mBufferType);
2725    }
2726
2727    /**
2728     * Sets the text that this TextView is to display (see
2729     * {@link #setText(CharSequence)}) and also sets whether it is stored
2730     * in a styleable/spannable buffer and whether it is editable.
2731     *
2732     * @attr ref android.R.styleable#TextView_text
2733     * @attr ref android.R.styleable#TextView_bufferType
2734     */
2735    public void setText(CharSequence text, BufferType type) {
2736        setText(text, type, true, 0);
2737
2738        if (mCharWrapper != null) {
2739            mCharWrapper.mChars = null;
2740        }
2741    }
2742
2743    private void setText(CharSequence text, BufferType type,
2744                         boolean notifyBefore, int oldlen) {
2745        if (text == null) {
2746            text = "";
2747        }
2748
2749        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
2750
2751        if (text instanceof Spanned &&
2752            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
2753            setHorizontalFadingEdgeEnabled(true);
2754            setEllipsize(TextUtils.TruncateAt.MARQUEE);
2755        }
2756
2757        int n = mFilters.length;
2758        for (int i = 0; i < n; i++) {
2759            CharSequence out = mFilters[i].filter(text, 0, text.length(),
2760                                                  EMPTY_SPANNED, 0, 0);
2761            if (out != null) {
2762                text = out;
2763            }
2764        }
2765
2766        if (notifyBefore) {
2767            if (mText != null) {
2768                oldlen = mText.length();
2769                sendBeforeTextChanged(mText, 0, oldlen, text.length());
2770            } else {
2771                sendBeforeTextChanged("", 0, 0, text.length());
2772            }
2773        }
2774
2775        boolean needEditableForNotification = false;
2776
2777        if (mListeners != null && mListeners.size() != 0) {
2778            needEditableForNotification = true;
2779        }
2780
2781        if (type == BufferType.EDITABLE || mInput != null ||
2782            needEditableForNotification) {
2783            Editable t = mEditableFactory.newEditable(text);
2784            text = t;
2785            setFilters(t, mFilters);
2786            InputMethodManager imm = InputMethodManager.peekInstance();
2787            if (imm != null) imm.restartInput(this);
2788        } else if (type == BufferType.SPANNABLE || mMovement != null) {
2789            text = mSpannableFactory.newSpannable(text);
2790        } else if (!(text instanceof CharWrapper)) {
2791            text = TextUtils.stringOrSpannedString(text);
2792        }
2793
2794        if (mAutoLinkMask != 0) {
2795            Spannable s2;
2796
2797            if (type == BufferType.EDITABLE || text instanceof Spannable) {
2798                s2 = (Spannable) text;
2799            } else {
2800                s2 = mSpannableFactory.newSpannable(text);
2801            }
2802
2803            if (Linkify.addLinks(s2, mAutoLinkMask)) {
2804                text = s2;
2805                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
2806
2807                /*
2808                 * We must go ahead and set the text before changing the
2809                 * movement method, because setMovementMethod() may call
2810                 * setText() again to try to upgrade the buffer type.
2811                 */
2812                mText = text;
2813
2814                // Do not change the movement method for text that support text selection as it
2815                // would prevent an arbitrary cursor displacement.
2816                final boolean hasTextSelection = this instanceof EditText || mTextIsSelectable;
2817                if (mLinksClickable && !hasTextSelection) {
2818                    setMovementMethod(LinkMovementMethod.getInstance());
2819                }
2820            }
2821        }
2822
2823        mBufferType = type;
2824        mText = text;
2825
2826        if (mTransformation == null)
2827            mTransformed = text;
2828        else
2829            mTransformed = mTransformation.getTransformation(text, this);
2830
2831        final int textLength = text.length();
2832
2833        if (text instanceof Spannable) {
2834            Spannable sp = (Spannable) text;
2835
2836            // Remove any ChangeWatchers that might have come
2837            // from other TextViews.
2838            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
2839            final int count = watchers.length;
2840            for (int i = 0; i < count; i++)
2841                sp.removeSpan(watchers[i]);
2842
2843            if (mChangeWatcher == null)
2844                mChangeWatcher = new ChangeWatcher();
2845
2846            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
2847                       (PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
2848
2849            if (mInput != null) {
2850                sp.setSpan(mInput, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2851            }
2852
2853            if (mTransformation != null) {
2854                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
2855
2856            }
2857
2858            if (mMovement != null) {
2859                mMovement.initialize(this, (Spannable) text);
2860
2861                /*
2862                 * Initializing the movement method will have set the
2863                 * selection, so reset mSelectionMoved to keep that from
2864                 * interfering with the normal on-focus selection-setting.
2865                 */
2866                mSelectionMoved = false;
2867            }
2868        }
2869
2870        if (mLayout != null) {
2871            checkForRelayout();
2872        }
2873
2874        sendOnTextChanged(text, 0, oldlen, textLength);
2875        onTextChanged(text, 0, oldlen, textLength);
2876
2877        if (needEditableForNotification) {
2878            sendAfterTextChanged((Editable) text);
2879        }
2880
2881        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
2882        prepareCursorControllers();
2883    }
2884
2885    /**
2886     * Sets the TextView to display the specified slice of the specified
2887     * char array.  You must promise that you will not change the contents
2888     * of the array except for right before another call to setText(),
2889     * since the TextView has no way to know that the text
2890     * has changed and that it needs to invalidate and re-layout.
2891     */
2892    public final void setText(char[] text, int start, int len) {
2893        int oldlen = 0;
2894
2895        if (start < 0 || len < 0 || start + len > text.length) {
2896            throw new IndexOutOfBoundsException(start + ", " + len);
2897        }
2898
2899        /*
2900         * We must do the before-notification here ourselves because if
2901         * the old text is a CharWrapper we destroy it before calling
2902         * into the normal path.
2903         */
2904        if (mText != null) {
2905            oldlen = mText.length();
2906            sendBeforeTextChanged(mText, 0, oldlen, len);
2907        } else {
2908            sendBeforeTextChanged("", 0, 0, len);
2909        }
2910
2911        if (mCharWrapper == null) {
2912            mCharWrapper = new CharWrapper(text, start, len);
2913        } else {
2914            mCharWrapper.set(text, start, len);
2915        }
2916
2917        setText(mCharWrapper, mBufferType, false, oldlen);
2918    }
2919
2920    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
2921        private char[] mChars;
2922        private int mStart, mLength;
2923
2924        public CharWrapper(char[] chars, int start, int len) {
2925            mChars = chars;
2926            mStart = start;
2927            mLength = len;
2928        }
2929
2930        /* package */ void set(char[] chars, int start, int len) {
2931            mChars = chars;
2932            mStart = start;
2933            mLength = len;
2934        }
2935
2936        public int length() {
2937            return mLength;
2938        }
2939
2940        public char charAt(int off) {
2941            return mChars[off + mStart];
2942        }
2943
2944        @Override
2945        public String toString() {
2946            return new String(mChars, mStart, mLength);
2947        }
2948
2949        public CharSequence subSequence(int start, int end) {
2950            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2951                throw new IndexOutOfBoundsException(start + ", " + end);
2952            }
2953
2954            return new String(mChars, start + mStart, end - start);
2955        }
2956
2957        public void getChars(int start, int end, char[] buf, int off) {
2958            if (start < 0 || end < 0 || start > mLength || end > mLength) {
2959                throw new IndexOutOfBoundsException(start + ", " + end);
2960            }
2961
2962            System.arraycopy(mChars, start + mStart, buf, off, end - start);
2963        }
2964
2965        public void drawText(Canvas c, int start, int end,
2966                             float x, float y, Paint p) {
2967            c.drawText(mChars, start + mStart, end - start, x, y, p);
2968        }
2969
2970        public void drawTextRun(Canvas c, int start, int end,
2971                int contextStart, int contextEnd, float x, float y, int flags, Paint p) {
2972            int count = end - start;
2973            int contextCount = contextEnd - contextStart;
2974            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
2975                    contextCount, x, y, flags, p);
2976        }
2977
2978        public float measureText(int start, int end, Paint p) {
2979            return p.measureText(mChars, start + mStart, end - start);
2980        }
2981
2982        public int getTextWidths(int start, int end, float[] widths, Paint p) {
2983            return p.getTextWidths(mChars, start + mStart, end - start, widths);
2984        }
2985
2986        public float getTextRunAdvances(int start, int end, int contextStart,
2987                int contextEnd, int flags, float[] advances, int advancesIndex,
2988                Paint p) {
2989            int count = end - start;
2990            int contextCount = contextEnd - contextStart;
2991            return p.getTextRunAdvances(mChars, start + mStart, count,
2992                    contextStart + mStart, contextCount, flags, advances,
2993                    advancesIndex);
2994        }
2995
2996        public float getTextRunAdvances(int start, int end, int contextStart,
2997                int contextEnd, int flags, float[] advances, int advancesIndex,
2998                Paint p, int reserved) {
2999            int count = end - start;
3000            int contextCount = contextEnd - contextStart;
3001            return p.getTextRunAdvances(mChars, start + mStart, count,
3002                    contextStart + mStart, contextCount, flags, advances,
3003                    advancesIndex, reserved);
3004        }
3005
3006        public int getTextRunCursor(int contextStart, int contextEnd, int flags,
3007                int offset, int cursorOpt, Paint p) {
3008            int contextCount = contextEnd - contextStart;
3009            return p.getTextRunCursor(mChars, contextStart + mStart,
3010                    contextCount, flags, offset + mStart, cursorOpt);
3011        }
3012    }
3013
3014    /**
3015     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
3016     * except that the cursor position (if any) is retained in the new text.
3017     *
3018     * @see #setText(CharSequence, android.widget.TextView.BufferType)
3019     */
3020    public final void setTextKeepState(CharSequence text, BufferType type) {
3021        int start = getSelectionStart();
3022        int end = getSelectionEnd();
3023        int len = text.length();
3024
3025        setText(text, type);
3026
3027        if (start >= 0 || end >= 0) {
3028            if (mText instanceof Spannable) {
3029                Selection.setSelection((Spannable) mText,
3030                                       Math.max(0, Math.min(start, len)),
3031                                       Math.max(0, Math.min(end, len)));
3032            }
3033        }
3034    }
3035
3036    @android.view.RemotableViewMethod
3037    public final void setText(int resid) {
3038        setText(getContext().getResources().getText(resid));
3039    }
3040
3041    public final void setText(int resid, BufferType type) {
3042        setText(getContext().getResources().getText(resid), type);
3043    }
3044
3045    /**
3046     * Sets the text to be displayed when the text of the TextView is empty.
3047     * Null means to use the normal empty text. The hint does not currently
3048     * participate in determining the size of the view.
3049     *
3050     * @attr ref android.R.styleable#TextView_hint
3051     */
3052    @android.view.RemotableViewMethod
3053    public final void setHint(CharSequence hint) {
3054        mHint = TextUtils.stringOrSpannedString(hint);
3055
3056        if (mLayout != null) {
3057            checkForRelayout();
3058        }
3059
3060        if (mText.length() == 0) {
3061            invalidate();
3062        }
3063    }
3064
3065    /**
3066     * Sets the text to be displayed when the text of the TextView is empty,
3067     * from a resource.
3068     *
3069     * @attr ref android.R.styleable#TextView_hint
3070     */
3071    @android.view.RemotableViewMethod
3072    public final void setHint(int resid) {
3073        setHint(getContext().getResources().getText(resid));
3074    }
3075
3076    /**
3077     * Returns the hint that is displayed when the text of the TextView
3078     * is empty.
3079     *
3080     * @attr ref android.R.styleable#TextView_hint
3081     */
3082    @ViewDebug.CapturedViewProperty
3083    public CharSequence getHint() {
3084        return mHint;
3085    }
3086
3087    private boolean isMultilineInputType(int type) {
3088        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
3089            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
3090    }
3091
3092    /**
3093     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
3094     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
3095     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
3096     * then a soft keyboard will not be displayed for this text view.
3097     *
3098     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
3099     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
3100     * type.
3101     *
3102     * @see #getInputType()
3103     * @see #setRawInputType(int)
3104     * @see android.text.InputType
3105     * @attr ref android.R.styleable#TextView_inputType
3106     */
3107    public void setInputType(int type) {
3108        final boolean wasPassword = isPasswordInputType(mInputType);
3109        final boolean wasVisiblePassword = isVisiblePasswordInputType(mInputType);
3110        setInputType(type, false);
3111        final boolean isPassword = isPasswordInputType(type);
3112        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
3113        boolean forceUpdate = false;
3114        if (isPassword) {
3115            setTransformationMethod(PasswordTransformationMethod.getInstance());
3116            setTypefaceByIndex(MONOSPACE, 0);
3117        } else if (isVisiblePassword) {
3118            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3119                forceUpdate = true;
3120            }
3121            setTypefaceByIndex(MONOSPACE, 0);
3122        } else if (wasPassword || wasVisiblePassword) {
3123            // not in password mode, clean up typeface and transformation
3124            setTypefaceByIndex(-1, -1);
3125            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3126                forceUpdate = true;
3127            }
3128        }
3129
3130        boolean singleLine = !isMultilineInputType(type);
3131
3132        // We need to update the single line mode if it has changed or we
3133        // were previously in password mode.
3134        if (mSingleLine != singleLine || forceUpdate) {
3135            // Change single line mode, but only change the transformation if
3136            // we are not in password mode.
3137            applySingleLine(singleLine, !isPassword, true);
3138        }
3139
3140        InputMethodManager imm = InputMethodManager.peekInstance();
3141        if (imm != null) imm.restartInput(this);
3142    }
3143
3144    /**
3145     * It would be better to rely on the input type for everything. A password inputType should have
3146     * a password transformation. We should hence use isPasswordInputType instead of this method.
3147     *
3148     * We should:
3149     * - Call setInputType in setKeyListener instead of changing the input type directly (which
3150     * would install the correct transformation).
3151     * - Refuse the installation of a non-password transformation in setTransformation if the input
3152     * type is password.
3153     *
3154     * However, this is like this for legacy reasons and we cannot break existing apps. This method
3155     * is useful since it matches what the user can see (obfuscated text or not).
3156     *
3157     * @return true if the current transformation method is of the password type.
3158     */
3159    private boolean hasPasswordTransformationMethod() {
3160        return mTransformation instanceof PasswordTransformationMethod;
3161    }
3162
3163    private boolean isPasswordInputType(int inputType) {
3164        final int variation =
3165                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3166        return variation
3167                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
3168                || variation
3169                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
3170                || variation
3171                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
3172    }
3173
3174    private boolean isVisiblePasswordInputType(int inputType) {
3175        final int variation =
3176                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3177        return variation
3178                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
3179    }
3180
3181    /**
3182     * Directly change the content type integer of the text view, without
3183     * modifying any other state.
3184     * @see #setInputType(int)
3185     * @see android.text.InputType
3186     * @attr ref android.R.styleable#TextView_inputType
3187     */
3188    public void setRawInputType(int type) {
3189        mInputType = type;
3190    }
3191
3192    private void setInputType(int type, boolean direct) {
3193        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
3194        KeyListener input;
3195        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
3196            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
3197            TextKeyListener.Capitalize cap;
3198            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
3199                cap = TextKeyListener.Capitalize.CHARACTERS;
3200            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
3201                cap = TextKeyListener.Capitalize.WORDS;
3202            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
3203                cap = TextKeyListener.Capitalize.SENTENCES;
3204            } else {
3205                cap = TextKeyListener.Capitalize.NONE;
3206            }
3207            input = TextKeyListener.getInstance(autotext, cap);
3208        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
3209            input = DigitsKeyListener.getInstance(
3210                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
3211                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
3212        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
3213            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
3214                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
3215                    input = DateKeyListener.getInstance();
3216                    break;
3217                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
3218                    input = TimeKeyListener.getInstance();
3219                    break;
3220                default:
3221                    input = DateTimeKeyListener.getInstance();
3222                    break;
3223            }
3224        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
3225            input = DialerKeyListener.getInstance();
3226        } else {
3227            input = TextKeyListener.getInstance();
3228        }
3229        setRawInputType(type);
3230        if (direct) mInput = input;
3231        else {
3232            setKeyListenerOnly(input);
3233        }
3234    }
3235
3236    /**
3237     * Get the type of the content.
3238     *
3239     * @see #setInputType(int)
3240     * @see android.text.InputType
3241     */
3242    public int getInputType() {
3243        return mInputType;
3244    }
3245
3246    /**
3247     * Change the editor type integer associated with the text view, which
3248     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
3249     * has focus.
3250     * @see #getImeOptions
3251     * @see android.view.inputmethod.EditorInfo
3252     * @attr ref android.R.styleable#TextView_imeOptions
3253     */
3254    public void setImeOptions(int imeOptions) {
3255        if (mInputContentType == null) {
3256            mInputContentType = new InputContentType();
3257        }
3258        mInputContentType.imeOptions = imeOptions;
3259    }
3260
3261    /**
3262     * Get the type of the IME editor.
3263     *
3264     * @see #setImeOptions(int)
3265     * @see android.view.inputmethod.EditorInfo
3266     */
3267    public int getImeOptions() {
3268        return mInputContentType != null
3269                ? mInputContentType.imeOptions : EditorInfo.IME_NULL;
3270    }
3271
3272    /**
3273     * Change the custom IME action associated with the text view, which
3274     * will be reported to an IME with {@link EditorInfo#actionLabel}
3275     * and {@link EditorInfo#actionId} when it has focus.
3276     * @see #getImeActionLabel
3277     * @see #getImeActionId
3278     * @see android.view.inputmethod.EditorInfo
3279     * @attr ref android.R.styleable#TextView_imeActionLabel
3280     * @attr ref android.R.styleable#TextView_imeActionId
3281     */
3282    public void setImeActionLabel(CharSequence label, int actionId) {
3283        if (mInputContentType == null) {
3284            mInputContentType = new InputContentType();
3285        }
3286        mInputContentType.imeActionLabel = label;
3287        mInputContentType.imeActionId = actionId;
3288    }
3289
3290    /**
3291     * Get the IME action label previous set with {@link #setImeActionLabel}.
3292     *
3293     * @see #setImeActionLabel
3294     * @see android.view.inputmethod.EditorInfo
3295     */
3296    public CharSequence getImeActionLabel() {
3297        return mInputContentType != null
3298                ? mInputContentType.imeActionLabel : null;
3299    }
3300
3301    /**
3302     * Get the IME action ID previous set with {@link #setImeActionLabel}.
3303     *
3304     * @see #setImeActionLabel
3305     * @see android.view.inputmethod.EditorInfo
3306     */
3307    public int getImeActionId() {
3308        return mInputContentType != null
3309                ? mInputContentType.imeActionId : 0;
3310    }
3311
3312    /**
3313     * Set a special listener to be called when an action is performed
3314     * on the text view.  This will be called when the enter key is pressed,
3315     * or when an action supplied to the IME is selected by the user.  Setting
3316     * this means that the normal hard key event will not insert a newline
3317     * into the text view, even if it is multi-line; holding down the ALT
3318     * modifier will, however, allow the user to insert a newline character.
3319     */
3320    public void setOnEditorActionListener(OnEditorActionListener l) {
3321        if (mInputContentType == null) {
3322            mInputContentType = new InputContentType();
3323        }
3324        mInputContentType.onEditorActionListener = l;
3325    }
3326
3327    /**
3328     * Called when an attached input method calls
3329     * {@link InputConnection#performEditorAction(int)
3330     * InputConnection.performEditorAction()}
3331     * for this text view.  The default implementation will call your action
3332     * listener supplied to {@link #setOnEditorActionListener}, or perform
3333     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
3334     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
3335     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
3336     * EditorInfo.IME_ACTION_DONE}.
3337     *
3338     * <p>For backwards compatibility, if no IME options have been set and the
3339     * text view would not normally advance focus on enter, then
3340     * the NEXT and DONE actions received here will be turned into an enter
3341     * key down/up pair to go through the normal key handling.
3342     *
3343     * @param actionCode The code of the action being performed.
3344     *
3345     * @see #setOnEditorActionListener
3346     */
3347    public void onEditorAction(int actionCode) {
3348        final InputContentType ict = mInputContentType;
3349        if (ict != null) {
3350            if (ict.onEditorActionListener != null) {
3351                if (ict.onEditorActionListener.onEditorAction(this,
3352                        actionCode, null)) {
3353                    return;
3354                }
3355            }
3356
3357            // This is the handling for some default action.
3358            // Note that for backwards compatibility we don't do this
3359            // default handling if explicit ime options have not been given,
3360            // instead turning this into the normal enter key codes that an
3361            // app may be expecting.
3362            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
3363                View v = focusSearch(FOCUS_DOWN);
3364                if (v != null) {
3365                    if (!v.requestFocus(FOCUS_DOWN)) {
3366                        throw new IllegalStateException("focus search returned a view " +
3367                                "that wasn't able to take focus!");
3368                    }
3369                }
3370                return;
3371
3372            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
3373                View v = focusSearch(FOCUS_UP);
3374                if (v != null) {
3375                    if (!v.requestFocus(FOCUS_UP)) {
3376                        throw new IllegalStateException("focus search returned a view " +
3377                                "that wasn't able to take focus!");
3378                    }
3379                }
3380                return;
3381
3382            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
3383                InputMethodManager imm = InputMethodManager.peekInstance();
3384                if (imm != null && imm.isActive(this)) {
3385                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
3386                }
3387                return;
3388            }
3389        }
3390
3391        Handler h = getHandler();
3392        if (h != null) {
3393            long eventTime = SystemClock.uptimeMillis();
3394            h.sendMessage(h.obtainMessage(ViewAncestor.DISPATCH_KEY_FROM_IME,
3395                    new KeyEvent(eventTime, eventTime,
3396                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
3397                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
3398                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3399                    | KeyEvent.FLAG_EDITOR_ACTION)));
3400            h.sendMessage(h.obtainMessage(ViewAncestor.DISPATCH_KEY_FROM_IME,
3401                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
3402                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
3403                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
3404                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
3405                    | KeyEvent.FLAG_EDITOR_ACTION)));
3406        }
3407    }
3408
3409    /**
3410     * Set the private content type of the text, which is the
3411     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
3412     * field that will be filled in when creating an input connection.
3413     *
3414     * @see #getPrivateImeOptions()
3415     * @see EditorInfo#privateImeOptions
3416     * @attr ref android.R.styleable#TextView_privateImeOptions
3417     */
3418    public void setPrivateImeOptions(String type) {
3419        if (mInputContentType == null) mInputContentType = new InputContentType();
3420        mInputContentType.privateImeOptions = type;
3421    }
3422
3423    /**
3424     * Get the private type of the content.
3425     *
3426     * @see #setPrivateImeOptions(String)
3427     * @see EditorInfo#privateImeOptions
3428     */
3429    public String getPrivateImeOptions() {
3430        return mInputContentType != null
3431                ? mInputContentType.privateImeOptions : null;
3432    }
3433
3434    /**
3435     * Set the extra input data of the text, which is the
3436     * {@link EditorInfo#extras TextBoxAttribute.extras}
3437     * Bundle that will be filled in when creating an input connection.  The
3438     * given integer is the resource ID of an XML resource holding an
3439     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
3440     *
3441     * @see #getInputExtras(boolean)
3442     * @see EditorInfo#extras
3443     * @attr ref android.R.styleable#TextView_editorExtras
3444     */
3445    public void setInputExtras(int xmlResId)
3446            throws XmlPullParserException, IOException {
3447        XmlResourceParser parser = getResources().getXml(xmlResId);
3448        if (mInputContentType == null) mInputContentType = new InputContentType();
3449        mInputContentType.extras = new Bundle();
3450        getResources().parseBundleExtras(parser, mInputContentType.extras);
3451    }
3452
3453    /**
3454     * Retrieve the input extras currently associated with the text view, which
3455     * can be viewed as well as modified.
3456     *
3457     * @param create If true, the extras will be created if they don't already
3458     * exist.  Otherwise, null will be returned if none have been created.
3459     * @see #setInputExtras(int)
3460     * @see EditorInfo#extras
3461     * @attr ref android.R.styleable#TextView_editorExtras
3462     */
3463    public Bundle getInputExtras(boolean create) {
3464        if (mInputContentType == null) {
3465            if (!create) return null;
3466            mInputContentType = new InputContentType();
3467        }
3468        if (mInputContentType.extras == null) {
3469            if (!create) return null;
3470            mInputContentType.extras = new Bundle();
3471        }
3472        return mInputContentType.extras;
3473    }
3474
3475    /**
3476     * Returns the error message that was set to be displayed with
3477     * {@link #setError}, or <code>null</code> if no error was set
3478     * or if it the error was cleared by the widget after user input.
3479     */
3480    public CharSequence getError() {
3481        return mError;
3482    }
3483
3484    /**
3485     * Sets the right-hand compound drawable of the TextView to the "error"
3486     * icon and sets an error message that will be displayed in a popup when
3487     * the TextView has focus.  The icon and error message will be reset to
3488     * null when any key events cause changes to the TextView's text.  If the
3489     * <code>error</code> is <code>null</code>, the error message and icon
3490     * will be cleared.
3491     */
3492    @android.view.RemotableViewMethod
3493    public void setError(CharSequence error) {
3494        if (error == null) {
3495            setError(null, null);
3496        } else {
3497            Drawable dr = getContext().getResources().
3498                getDrawable(com.android.internal.R.drawable.indicator_input_error);
3499
3500            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
3501            setError(error, dr);
3502        }
3503    }
3504
3505    /**
3506     * Sets the right-hand compound drawable of the TextView to the specified
3507     * icon and sets an error message that will be displayed in a popup when
3508     * the TextView has focus.  The icon and error message will be reset to
3509     * null when any key events cause changes to the TextView's text.  The
3510     * drawable must already have had {@link Drawable#setBounds} set on it.
3511     * If the <code>error</code> is <code>null</code>, the error message will
3512     * be cleared (and you should provide a <code>null</code> icon as well).
3513     */
3514    public void setError(CharSequence error, Drawable icon) {
3515        error = TextUtils.stringOrSpannedString(error);
3516
3517        mError = error;
3518        mErrorWasChanged = true;
3519        final Drawables dr = mDrawables;
3520        if (dr != null) {
3521            setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop, icon, dr.mDrawableBottom);
3522        } else {
3523            setCompoundDrawables(null, null, icon, null);
3524        }
3525
3526        if (error == null) {
3527            if (mPopup != null) {
3528                if (mPopup.isShowing()) {
3529                    mPopup.dismiss();
3530                }
3531
3532                mPopup = null;
3533            }
3534        } else {
3535            if (isFocused()) {
3536                showError();
3537            }
3538        }
3539    }
3540
3541    private void showError() {
3542        if (getWindowToken() == null) {
3543            mShowErrorAfterAttach = true;
3544            return;
3545        }
3546
3547        if (mPopup == null) {
3548            LayoutInflater inflater = LayoutInflater.from(getContext());
3549            final TextView err = (TextView) inflater.inflate(
3550                    com.android.internal.R.layout.textview_hint, null);
3551
3552            final float scale = getResources().getDisplayMetrics().density;
3553            mPopup = new ErrorPopup(err, (int) (200 * scale + 0.5f), (int) (50 * scale + 0.5f));
3554            mPopup.setFocusable(false);
3555            // The user is entering text, so the input method is needed.  We
3556            // don't want the popup to be displayed on top of it.
3557            mPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED);
3558        }
3559
3560        TextView tv = (TextView) mPopup.getContentView();
3561        chooseSize(mPopup, mError, tv);
3562        tv.setText(mError);
3563
3564        mPopup.showAsDropDown(this, getErrorX(), getErrorY());
3565        mPopup.fixDirection(mPopup.isAboveAnchor());
3566    }
3567
3568    private static class ErrorPopup extends PopupWindow {
3569        private boolean mAbove = false;
3570        private final TextView mView;
3571        private int mPopupInlineErrorBackgroundId = 0;
3572        private int mPopupInlineErrorAboveBackgroundId = 0;
3573
3574        ErrorPopup(TextView v, int width, int height) {
3575            super(v, width, height);
3576            mView = v;
3577            // Make sure the TextView has a background set as it will be used the first time it is
3578            // shown and positionned. Initialized with below background, which should have
3579            // dimensions identical to the above version for this to work (and is more likely).
3580            mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId,
3581                    com.android.internal.R.styleable.Theme_errorMessageBackground);
3582            mView.setBackgroundResource(mPopupInlineErrorBackgroundId);
3583        }
3584
3585        void fixDirection(boolean above) {
3586            mAbove = above;
3587
3588            if (above) {
3589                mPopupInlineErrorAboveBackgroundId =
3590                    getResourceId(mPopupInlineErrorAboveBackgroundId,
3591                            com.android.internal.R.styleable.Theme_errorMessageAboveBackground);
3592            } else {
3593                mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId,
3594                        com.android.internal.R.styleable.Theme_errorMessageBackground);
3595            }
3596
3597            mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId :
3598                mPopupInlineErrorBackgroundId);
3599        }
3600
3601        private int getResourceId(int currentId, int index) {
3602            if (currentId == 0) {
3603                TypedArray styledAttributes = mView.getContext().obtainStyledAttributes(
3604                        R.styleable.Theme);
3605                currentId = styledAttributes.getResourceId(index, 0);
3606                styledAttributes.recycle();
3607            }
3608            return currentId;
3609        }
3610
3611        @Override
3612        public void update(int x, int y, int w, int h, boolean force) {
3613            super.update(x, y, w, h, force);
3614
3615            boolean above = isAboveAnchor();
3616            if (above != mAbove) {
3617                fixDirection(above);
3618            }
3619        }
3620    }
3621
3622    /**
3623     * Returns the Y offset to make the pointy top of the error point
3624     * at the middle of the error icon.
3625     */
3626    private int getErrorX() {
3627        /*
3628         * The "25" is the distance between the point and the right edge
3629         * of the background
3630         */
3631        final float scale = getResources().getDisplayMetrics().density;
3632
3633        final Drawables dr = mDrawables;
3634        return getWidth() - mPopup.getWidth() - getPaddingRight() -
3635                (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f);
3636    }
3637
3638    /**
3639     * Returns the Y offset to make the pointy top of the error point
3640     * at the bottom of the error icon.
3641     */
3642    private int getErrorY() {
3643        /*
3644         * Compound, not extended, because the icon is not clipped
3645         * if the text height is smaller.
3646         */
3647        final int compoundPaddingTop = getCompoundPaddingTop();
3648        int vspace = mBottom - mTop - getCompoundPaddingBottom() - compoundPaddingTop;
3649
3650        final Drawables dr = mDrawables;
3651        int icontop = compoundPaddingTop +
3652                (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2;
3653
3654        /*
3655         * The "2" is the distance between the point and the top edge
3656         * of the background.
3657         */
3658        final float scale = getResources().getDisplayMetrics().density;
3659        return icontop + (dr != null ? dr.mDrawableHeightRight : 0) - getHeight() -
3660                (int) (2 * scale + 0.5f);
3661    }
3662
3663    private void hideError() {
3664        if (mPopup != null) {
3665            if (mPopup.isShowing()) {
3666                mPopup.dismiss();
3667            }
3668        }
3669
3670        mShowErrorAfterAttach = false;
3671    }
3672
3673    private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) {
3674        int wid = tv.getPaddingLeft() + tv.getPaddingRight();
3675        int ht = tv.getPaddingTop() + tv.getPaddingBottom();
3676
3677        /*
3678         * Figure out how big the text would be if we laid it out to the
3679         * full width of this view minus the border.
3680         */
3681        int cap = getWidth() - wid;
3682        if (cap < 0) {
3683            cap = 200; // We must not be measured yet -- setFrame() will fix it.
3684        }
3685
3686        Layout l = new StaticLayout(text, tv.getPaint(), cap,
3687                                    Layout.Alignment.ALIGN_NORMAL, 1, 0, true);
3688        float max = 0;
3689        for (int i = 0; i < l.getLineCount(); i++) {
3690            max = Math.max(max, l.getLineWidth(i));
3691        }
3692
3693        /*
3694         * Now set the popup size to be big enough for the text plus the border.
3695         */
3696        pop.setWidth(wid + (int) Math.ceil(max));
3697        pop.setHeight(ht + l.getHeight());
3698    }
3699
3700
3701    @Override
3702    protected boolean setFrame(int l, int t, int r, int b) {
3703        boolean result = super.setFrame(l, t, r, b);
3704
3705        if (mPopup != null) {
3706            TextView tv = (TextView) mPopup.getContentView();
3707            chooseSize(mPopup, mError, tv);
3708            mPopup.update(this, getErrorX(), getErrorY(),
3709                          mPopup.getWidth(), mPopup.getHeight());
3710        }
3711
3712        restartMarqueeIfNeeded();
3713
3714        return result;
3715    }
3716
3717    private void restartMarqueeIfNeeded() {
3718        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
3719            mRestartMarquee = false;
3720            startMarquee();
3721        }
3722    }
3723
3724    /**
3725     * Sets the list of input filters that will be used if the buffer is
3726     * Editable.  Has no effect otherwise.
3727     *
3728     * @attr ref android.R.styleable#TextView_maxLength
3729     */
3730    public void setFilters(InputFilter[] filters) {
3731        if (filters == null) {
3732            throw new IllegalArgumentException();
3733        }
3734
3735        mFilters = filters;
3736
3737        if (mText instanceof Editable) {
3738            setFilters((Editable) mText, filters);
3739        }
3740    }
3741
3742    /**
3743     * Sets the list of input filters on the specified Editable,
3744     * and includes mInput in the list if it is an InputFilter.
3745     */
3746    private void setFilters(Editable e, InputFilter[] filters) {
3747        if (mInput instanceof InputFilter) {
3748            InputFilter[] nf = new InputFilter[filters.length + 1];
3749
3750            System.arraycopy(filters, 0, nf, 0, filters.length);
3751            nf[filters.length] = (InputFilter) mInput;
3752
3753            e.setFilters(nf);
3754        } else {
3755            e.setFilters(filters);
3756        }
3757    }
3758
3759    /**
3760     * Returns the current list of input filters.
3761     */
3762    public InputFilter[] getFilters() {
3763        return mFilters;
3764    }
3765
3766    /////////////////////////////////////////////////////////////////////////
3767
3768    private int getVerticalOffset(boolean forceNormal) {
3769        int voffset = 0;
3770        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3771
3772        Layout l = mLayout;
3773        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3774            l = mHintLayout;
3775        }
3776
3777        if (gravity != Gravity.TOP) {
3778            int boxht;
3779
3780            if (l == mHintLayout) {
3781                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3782                        getCompoundPaddingBottom();
3783            } else {
3784                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3785                        getExtendedPaddingBottom();
3786            }
3787            int textht = l.getHeight();
3788
3789            if (textht < boxht) {
3790                if (gravity == Gravity.BOTTOM)
3791                    voffset = boxht - textht;
3792                else // (gravity == Gravity.CENTER_VERTICAL)
3793                    voffset = (boxht - textht) >> 1;
3794            }
3795        }
3796        return voffset;
3797    }
3798
3799    private int getBottomVerticalOffset(boolean forceNormal) {
3800        int voffset = 0;
3801        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
3802
3803        Layout l = mLayout;
3804        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
3805            l = mHintLayout;
3806        }
3807
3808        if (gravity != Gravity.BOTTOM) {
3809            int boxht;
3810
3811            if (l == mHintLayout) {
3812                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
3813                        getCompoundPaddingBottom();
3814            } else {
3815                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
3816                        getExtendedPaddingBottom();
3817            }
3818            int textht = l.getHeight();
3819
3820            if (textht < boxht) {
3821                if (gravity == Gravity.TOP)
3822                    voffset = boxht - textht;
3823                else // (gravity == Gravity.CENTER_VERTICAL)
3824                    voffset = (boxht - textht) >> 1;
3825            }
3826        }
3827        return voffset;
3828    }
3829
3830    private void invalidateCursorPath() {
3831        if (mHighlightPathBogus) {
3832            invalidateCursor();
3833        } else {
3834            final int horizontalPadding = getCompoundPaddingLeft();
3835            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
3836
3837            if (mCursorCount == 0) {
3838                synchronized (sTempRect) {
3839                    /*
3840                     * The reason for this concern about the thickness of the
3841                     * cursor and doing the floor/ceil on the coordinates is that
3842                     * some EditTexts (notably textfields in the Browser) have
3843                     * anti-aliased text where not all the characters are
3844                     * necessarily at integer-multiple locations.  This should
3845                     * make sure the entire cursor gets invalidated instead of
3846                     * sometimes missing half a pixel.
3847                     */
3848                    float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
3849                    if (thick < 1.0f) {
3850                        thick = 1.0f;
3851                    }
3852
3853                    thick /= 2.0f;
3854
3855                    mHighlightPath.computeBounds(sTempRect, false);
3856
3857                    invalidate((int) FloatMath.floor(horizontalPadding + sTempRect.left - thick),
3858                            (int) FloatMath.floor(verticalPadding + sTempRect.top - thick),
3859                            (int) FloatMath.ceil(horizontalPadding + sTempRect.right + thick),
3860                            (int) FloatMath.ceil(verticalPadding + sTempRect.bottom + thick));
3861                }
3862            } else {
3863                for (int i = 0; i < mCursorCount; i++) {
3864                    Rect bounds = mCursorDrawable[i].getBounds();
3865                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
3866                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
3867                }
3868            }
3869        }
3870    }
3871
3872    private void invalidateCursor() {
3873        int where = getSelectionEnd();
3874
3875        invalidateCursor(where, where, where);
3876    }
3877
3878    private void invalidateCursor(int a, int b, int c) {
3879        if (mLayout == null) {
3880            invalidate();
3881        } else {
3882            if (a >= 0 || b >= 0 || c >= 0) {
3883                int first = Math.min(Math.min(a, b), c);
3884                int last = Math.max(Math.max(a, b), c);
3885
3886                int line = mLayout.getLineForOffset(first);
3887                int top = mLayout.getLineTop(line);
3888
3889                // This is ridiculous, but the descent from the line above
3890                // can hang down into the line we really want to redraw,
3891                // so we have to invalidate part of the line above to make
3892                // sure everything that needs to be redrawn really is.
3893                // (But not the whole line above, because that would cause
3894                // the same problem with the descenders on the line above it!)
3895                if (line > 0) {
3896                    top -= mLayout.getLineDescent(line - 1);
3897                }
3898
3899                int line2;
3900
3901                if (first == last)
3902                    line2 = line;
3903                else
3904                    line2 = mLayout.getLineForOffset(last);
3905
3906                int bottom = mLayout.getLineTop(line2 + 1);
3907
3908                final int horizontalPadding = getCompoundPaddingLeft();
3909                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
3910
3911                // If used, the cursor drawables can have an arbitrary dimension that can go beyond
3912                // the invalidated lines specified above.
3913                for (int i = 0; i < mCursorCount; i++) {
3914                    Rect bounds = mCursorDrawable[i].getBounds();
3915                    top = Math.min(top, bounds.top);
3916                    bottom = Math.max(bottom, bounds.bottom);
3917                    // Horizontal bounds are already full width, no need to update
3918                }
3919
3920                invalidate(horizontalPadding + mScrollX, top + verticalPadding,
3921                        horizontalPadding + mScrollX + getWidth() -
3922                        getCompoundPaddingLeft() - getCompoundPaddingRight(),
3923                        bottom + verticalPadding);
3924            }
3925        }
3926    }
3927
3928    private void registerForPreDraw() {
3929        final ViewTreeObserver observer = getViewTreeObserver();
3930
3931        if (mPreDrawState == PREDRAW_NOT_REGISTERED) {
3932            observer.addOnPreDrawListener(this);
3933            mPreDrawState = PREDRAW_PENDING;
3934        } else if (mPreDrawState == PREDRAW_DONE) {
3935            mPreDrawState = PREDRAW_PENDING;
3936        }
3937
3938        // else state is PREDRAW_PENDING, so keep waiting.
3939    }
3940
3941    /**
3942     * {@inheritDoc}
3943     */
3944    public boolean onPreDraw() {
3945        if (mPreDrawState != PREDRAW_PENDING) {
3946            return true;
3947        }
3948
3949        if (mLayout == null) {
3950            assumeLayout();
3951        }
3952
3953        boolean changed = false;
3954
3955        if (mMovement != null) {
3956            /* This code also provides auto-scrolling when a cursor is moved using a
3957             * CursorController (insertion point or selection limits).
3958             * For selection, ensure start or end is visible depending on controller's state.
3959             */
3960            int curs = getSelectionEnd();
3961            // Do not create the controller if it is not already created.
3962            if (mSelectionModifierCursorController != null &&
3963                    mSelectionModifierCursorController.isSelectionStartDragged()) {
3964                curs = getSelectionStart();
3965            }
3966
3967            /*
3968             * TODO: This should really only keep the end in view if
3969             * it already was before the text changed.  I'm not sure
3970             * of a good way to tell from here if it was.
3971             */
3972            if (curs < 0 &&
3973                  (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
3974                curs = mText.length();
3975            }
3976
3977            if (curs >= 0) {
3978                changed = bringPointIntoView(curs);
3979            }
3980        } else {
3981            changed = bringTextIntoView();
3982        }
3983
3984        // This has to be checked here since:
3985        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
3986        //   a screen rotation) since layout is not yet initialized at that point.
3987        if (mCreatedWithASelection) {
3988            startSelectionActionMode();
3989            mCreatedWithASelection = false;
3990        }
3991
3992        // Phone specific code (there is no ExtractEditText on tablets).
3993        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
3994        // not be set. Do the test here instead.
3995        if (this instanceof ExtractEditText && hasSelection()) {
3996            startSelectionActionMode();
3997        }
3998
3999        mPreDrawState = PREDRAW_DONE;
4000        return !changed;
4001    }
4002
4003    @Override
4004    protected void onAttachedToWindow() {
4005        super.onAttachedToWindow();
4006
4007        mTemporaryDetach = false;
4008
4009        if (mShowErrorAfterAttach) {
4010            showError();
4011            mShowErrorAfterAttach = false;
4012        }
4013
4014        final ViewTreeObserver observer = getViewTreeObserver();
4015        // No need to create the controller.
4016        // The get method will add the listener on controller creation.
4017        if (mInsertionPointCursorController != null) {
4018            observer.addOnTouchModeChangeListener(mInsertionPointCursorController);
4019        }
4020        if (mSelectionModifierCursorController != null) {
4021            observer.addOnTouchModeChangeListener(mSelectionModifierCursorController);
4022        }
4023    }
4024
4025    @Override
4026    protected void onDetachedFromWindow() {
4027        super.onDetachedFromWindow();
4028
4029        final ViewTreeObserver observer = getViewTreeObserver();
4030        if (mPreDrawState != PREDRAW_NOT_REGISTERED) {
4031            observer.removeOnPreDrawListener(this);
4032            mPreDrawState = PREDRAW_NOT_REGISTERED;
4033        }
4034
4035        if (mError != null) {
4036            hideError();
4037        }
4038
4039        if (mBlink != null) {
4040            mBlink.removeCallbacks(mBlink);
4041        }
4042
4043        if (mInsertionPointCursorController != null) {
4044            mInsertionPointCursorController.onDetached();
4045        }
4046
4047        if (mSelectionModifierCursorController != null) {
4048            mSelectionModifierCursorController.onDetached();
4049        }
4050
4051        hideControllers();
4052    }
4053
4054    @Override
4055    protected boolean isPaddingOffsetRequired() {
4056        return mShadowRadius != 0 || mDrawables != null;
4057    }
4058
4059    @Override
4060    protected int getLeftPaddingOffset() {
4061        return getCompoundPaddingLeft() - mPaddingLeft +
4062                (int) Math.min(0, mShadowDx - mShadowRadius);
4063    }
4064
4065    @Override
4066    protected int getTopPaddingOffset() {
4067        return (int) Math.min(0, mShadowDy - mShadowRadius);
4068    }
4069
4070    @Override
4071    protected int getBottomPaddingOffset() {
4072        return (int) Math.max(0, mShadowDy + mShadowRadius);
4073    }
4074
4075    @Override
4076    protected int getRightPaddingOffset() {
4077        return -(getCompoundPaddingRight() - mPaddingRight) +
4078                (int) Math.max(0, mShadowDx + mShadowRadius);
4079    }
4080
4081    @Override
4082    protected boolean verifyDrawable(Drawable who) {
4083        final boolean verified = super.verifyDrawable(who);
4084        if (!verified && mDrawables != null) {
4085            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
4086                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom;
4087        }
4088        return verified;
4089    }
4090
4091    @Override
4092    public void jumpDrawablesToCurrentState() {
4093        super.jumpDrawablesToCurrentState();
4094        if (mDrawables != null) {
4095            if (mDrawables.mDrawableLeft != null) {
4096                mDrawables.mDrawableLeft.jumpToCurrentState();
4097            }
4098            if (mDrawables.mDrawableTop != null) {
4099                mDrawables.mDrawableTop.jumpToCurrentState();
4100            }
4101            if (mDrawables.mDrawableRight != null) {
4102                mDrawables.mDrawableRight.jumpToCurrentState();
4103            }
4104            if (mDrawables.mDrawableBottom != null) {
4105                mDrawables.mDrawableBottom.jumpToCurrentState();
4106            }
4107        }
4108    }
4109
4110    @Override
4111    public void invalidateDrawable(Drawable drawable) {
4112        if (verifyDrawable(drawable)) {
4113            final Rect dirty = drawable.getBounds();
4114            int scrollX = mScrollX;
4115            int scrollY = mScrollY;
4116
4117            // IMPORTANT: The coordinates below are based on the coordinates computed
4118            // for each compound drawable in onDraw(). Make sure to update each section
4119            // accordingly.
4120            final TextView.Drawables drawables = mDrawables;
4121            if (drawables != null) {
4122                if (drawable == drawables.mDrawableLeft) {
4123                    final int compoundPaddingTop = getCompoundPaddingTop();
4124                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4125                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4126
4127                    scrollX += mPaddingLeft;
4128                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
4129                } else if (drawable == drawables.mDrawableRight) {
4130                    final int compoundPaddingTop = getCompoundPaddingTop();
4131                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4132                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4133
4134                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
4135                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
4136                } else if (drawable == drawables.mDrawableTop) {
4137                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4138                    final int compoundPaddingRight = getCompoundPaddingRight();
4139                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4140
4141                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
4142                    scrollY += mPaddingTop;
4143                } else if (drawable == drawables.mDrawableBottom) {
4144                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4145                    final int compoundPaddingRight = getCompoundPaddingRight();
4146                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4147
4148                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
4149                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
4150                }
4151            }
4152
4153            invalidate(dirty.left + scrollX, dirty.top + scrollY,
4154                    dirty.right + scrollX, dirty.bottom + scrollY);
4155        }
4156    }
4157
4158    /**
4159     * @hide
4160     */
4161    @Override
4162    public int getResolvedLayoutDirection(Drawable who) {
4163        if (who == null) return View.LAYOUT_DIRECTION_LTR;
4164        if (mDrawables != null) {
4165            final Drawables drawables = mDrawables;
4166            if (who == drawables.mDrawableLeft || who == drawables.mDrawableRight ||
4167                who == drawables.mDrawableTop || who == drawables.mDrawableBottom) {
4168                return getResolvedLayoutDirection();
4169            }
4170        }
4171        return super.getResolvedLayoutDirection(who);
4172    }
4173
4174    @Override
4175    protected boolean onSetAlpha(int alpha) {
4176        // Alpha is supported if and only if the drawing can be done in one pass.
4177        // TODO text with spans with a background color currently do not respect this alpha.
4178        if (getBackground() == null) {
4179            mCurrentAlpha = alpha;
4180            final Drawables dr = mDrawables;
4181            if (dr != null) {
4182                if (dr.mDrawableLeft != null) dr.mDrawableLeft.mutate().setAlpha(alpha);
4183                if (dr.mDrawableTop != null) dr.mDrawableTop.mutate().setAlpha(alpha);
4184                if (dr.mDrawableRight != null) dr.mDrawableRight.mutate().setAlpha(alpha);
4185                if (dr.mDrawableBottom != null) dr.mDrawableBottom.mutate().setAlpha(alpha);
4186            }
4187            return true;
4188        }
4189
4190        mCurrentAlpha = 255;
4191        return false;
4192    }
4193
4194    /**
4195     * When a TextView is used to display a useful piece of information to the user (such as a
4196     * contact's address), it should be made selectable, so that the user can select and copy this
4197     * content.
4198     *
4199     * Use {@link #setTextIsSelectable(boolean)} or the
4200     * {@link android.R.styleable#TextView_textIsSelectable} XML attribute to make this TextView
4201     * selectable (text is not selectable by default).
4202     *
4203     * Note that the content of an EditText is always selectable.
4204     *
4205     * @return True if the text displayed in this TextView can be selected by the user.
4206     *
4207     * @attr ref android.R.styleable#TextView_textIsSelectable
4208     */
4209    public boolean isTextSelectable() {
4210        return mTextIsSelectable;
4211    }
4212
4213    /**
4214     * Sets whether or not (default) the content of this view is selectable by the user.
4215     *
4216     * Note that this methods affect the {@link #setFocusable(boolean)},
4217     * {@link #setFocusableInTouchMode(boolean)} {@link #setClickable(boolean)} and
4218     * {@link #setLongClickable(boolean)} states and you may want to restore these if they were
4219     * customized.
4220     *
4221     * See {@link #isTextSelectable} for details.
4222     *
4223     * @param selectable Whether or not the content of this TextView should be selectable.
4224     */
4225    public void setTextIsSelectable(boolean selectable) {
4226        if (mTextIsSelectable == selectable) return;
4227
4228        mTextIsSelectable = selectable;
4229
4230        setFocusableInTouchMode(selectable);
4231        setFocusable(selectable);
4232        setClickable(selectable);
4233        setLongClickable(selectable);
4234
4235        // mInputType is already EditorInfo.TYPE_NULL and mInput is null;
4236
4237        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
4238        setText(getText(), selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
4239
4240        // Called by setText above, but safer in case of future code changes
4241        prepareCursorControllers();
4242    }
4243
4244    @Override
4245    protected int[] onCreateDrawableState(int extraSpace) {
4246        final int[] drawableState;
4247
4248        if (mSingleLine) {
4249            drawableState = super.onCreateDrawableState(extraSpace);
4250        } else {
4251            drawableState = super.onCreateDrawableState(extraSpace + 1);
4252            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
4253        }
4254
4255        if (mTextIsSelectable) {
4256            // Disable pressed state, which was introduced when TextView was made clickable.
4257            // Prevents text color change.
4258            // setClickable(false) would have a similar effect, but it also disables focus changes
4259            // and long press actions, which are both needed by text selection.
4260            final int length = drawableState.length;
4261            for (int i = 0; i < length; i++) {
4262                if (drawableState[i] == R.attr.state_pressed) {
4263                    final int[] nonPressedState = new int[length - 1];
4264                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
4265                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
4266                    return nonPressedState;
4267                }
4268            }
4269        }
4270
4271        return drawableState;
4272    }
4273
4274    @Override
4275    protected void onDraw(Canvas canvas) {
4276        if (mPreDrawState == PREDRAW_DONE) {
4277            final ViewTreeObserver observer = getViewTreeObserver();
4278            observer.removeOnPreDrawListener(this);
4279            mPreDrawState = PREDRAW_NOT_REGISTERED;
4280        }
4281
4282        if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return;
4283
4284        restartMarqueeIfNeeded();
4285
4286        // Draw the background for this view
4287        super.onDraw(canvas);
4288
4289        final int compoundPaddingLeft = getCompoundPaddingLeft();
4290        final int compoundPaddingTop = getCompoundPaddingTop();
4291        final int compoundPaddingRight = getCompoundPaddingRight();
4292        final int compoundPaddingBottom = getCompoundPaddingBottom();
4293        final int scrollX = mScrollX;
4294        final int scrollY = mScrollY;
4295        final int right = mRight;
4296        final int left = mLeft;
4297        final int bottom = mBottom;
4298        final int top = mTop;
4299
4300        final Drawables dr = mDrawables;
4301        if (dr != null) {
4302            /*
4303             * Compound, not extended, because the icon is not clipped
4304             * if the text height is smaller.
4305             */
4306
4307            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
4308            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
4309
4310            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4311            // Make sure to update invalidateDrawable() when changing this code.
4312            if (dr.mDrawableLeft != null) {
4313                canvas.save();
4314                canvas.translate(scrollX + mPaddingLeft,
4315                                 scrollY + compoundPaddingTop +
4316                                 (vspace - dr.mDrawableHeightLeft) / 2);
4317                dr.mDrawableLeft.draw(canvas);
4318                canvas.restore();
4319            }
4320
4321            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4322            // Make sure to update invalidateDrawable() when changing this code.
4323            if (dr.mDrawableRight != null) {
4324                canvas.save();
4325                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
4326                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
4327                dr.mDrawableRight.draw(canvas);
4328                canvas.restore();
4329            }
4330
4331            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4332            // Make sure to update invalidateDrawable() when changing this code.
4333            if (dr.mDrawableTop != null) {
4334                canvas.save();
4335                canvas.translate(scrollX + compoundPaddingLeft + (hspace - dr.mDrawableWidthTop) / 2,
4336                        scrollY + mPaddingTop);
4337                dr.mDrawableTop.draw(canvas);
4338                canvas.restore();
4339            }
4340
4341            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4342            // Make sure to update invalidateDrawable() when changing this code.
4343            if (dr.mDrawableBottom != null) {
4344                canvas.save();
4345                canvas.translate(scrollX + compoundPaddingLeft +
4346                        (hspace - dr.mDrawableWidthBottom) / 2,
4347                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
4348                dr.mDrawableBottom.draw(canvas);
4349                canvas.restore();
4350            }
4351        }
4352
4353        int color = mCurTextColor;
4354
4355        if (mLayout == null) {
4356            assumeLayout();
4357        }
4358
4359        Layout layout = mLayout;
4360        int cursorcolor = color;
4361
4362        if (mHint != null && mText.length() == 0) {
4363            if (mHintTextColor != null) {
4364                color = mCurHintTextColor;
4365            }
4366
4367            layout = mHintLayout;
4368        }
4369
4370        mTextPaint.setColor(color);
4371        if (mCurrentAlpha != 255) {
4372            // If set, the alpha will override the color's alpha. Multiply the alphas.
4373            mTextPaint.setAlpha((mCurrentAlpha * Color.alpha(color)) / 255);
4374        }
4375        mTextPaint.drawableState = getDrawableState();
4376
4377        canvas.save();
4378        /*  Would be faster if we didn't have to do this. Can we chop the
4379            (displayable) text so that we don't need to do this ever?
4380        */
4381
4382        int extendedPaddingTop = getExtendedPaddingTop();
4383        int extendedPaddingBottom = getExtendedPaddingBottom();
4384
4385        float clipLeft = compoundPaddingLeft + scrollX;
4386        float clipTop = extendedPaddingTop + scrollY;
4387        float clipRight = right - left - compoundPaddingRight + scrollX;
4388        float clipBottom = bottom - top - extendedPaddingBottom + scrollY;
4389
4390        if (mShadowRadius != 0) {
4391            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
4392            clipRight += Math.max(0, mShadowDx + mShadowRadius);
4393
4394            clipTop += Math.min(0, mShadowDy - mShadowRadius);
4395            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
4396        }
4397
4398        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
4399
4400        int voffsetText = 0;
4401        int voffsetCursor = 0;
4402
4403        // translate in by our padding
4404        {
4405            /* shortcircuit calling getVerticaOffset() */
4406            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4407                voffsetText = getVerticalOffset(false);
4408                voffsetCursor = getVerticalOffset(true);
4409            }
4410            canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
4411        }
4412
4413        final int layoutDirection = getResolvedLayoutDirection();
4414        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
4415        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4416            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
4417                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
4418                canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft -
4419                        getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f);
4420            }
4421
4422            if (mMarquee != null && mMarquee.isRunning()) {
4423                canvas.translate(-mMarquee.mScroll, 0.0f);
4424            }
4425        }
4426
4427        Path highlight = null;
4428        int selStart = -1, selEnd = -1;
4429        boolean drawCursor = false;
4430
4431        //  If there is no movement method, then there can be no selection.
4432        //  Check that first and attempt to skip everything having to do with
4433        //  the cursor.
4434        //  XXX This is not strictly true -- a program could set the
4435        //  selection manually if it really wanted to.
4436        if (mMovement != null && (isFocused() || isPressed())) {
4437            selStart = getSelectionStart();
4438            selEnd = getSelectionEnd();
4439
4440            if ((isCursorVisible() || mTextIsSelectable) && selStart >= 0 && isEnabled()) {
4441                if (mHighlightPath == null)
4442                    mHighlightPath = new Path();
4443
4444                if (selStart == selEnd) {
4445                    if (!mTextIsSelectable &&
4446                            (SystemClock.uptimeMillis() - mShowCursor) % (2 * BLINK) < BLINK) {
4447                        if (mHighlightPathBogus) {
4448                            mHighlightPath.reset();
4449                            mLayout.getCursorPath(selStart, mHighlightPath, mText);
4450                            updateCursorsPositions();
4451                            mHighlightPathBogus = false;
4452                        }
4453
4454                        // XXX should pass to skin instead of drawing directly
4455                        mHighlightPaint.setColor(cursorcolor);
4456                        if (mCurrentAlpha != 255) {
4457                            mHighlightPaint.setAlpha(
4458                                    (mCurrentAlpha * Color.alpha(cursorcolor)) / 255);
4459                        }
4460                        mHighlightPaint.setStyle(Paint.Style.STROKE);
4461                        highlight = mHighlightPath;
4462                        drawCursor = mCursorCount > 0;
4463                    }
4464                } else {
4465                    if (mHighlightPathBogus) {
4466                        mHighlightPath.reset();
4467                        mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4468                        mHighlightPathBogus = false;
4469                    }
4470
4471                    // XXX should pass to skin instead of drawing directly
4472                    mHighlightPaint.setColor(mHighlightColor);
4473                    if (mCurrentAlpha != 255) {
4474                        mHighlightPaint.setAlpha(
4475                                (mCurrentAlpha * Color.alpha(mHighlightColor)) / 255);
4476                    }
4477                    mHighlightPaint.setStyle(Paint.Style.FILL);
4478
4479                    highlight = mHighlightPath;
4480                }
4481            }
4482        }
4483
4484        /*  Comment out until we decide what to do about animations
4485        boolean isLinearTextOn = false;
4486        if (currentTransformation != null) {
4487            isLinearTextOn = mTextPaint.isLinearTextOn();
4488            Matrix m = currentTransformation.getMatrix();
4489            if (!m.isIdentity()) {
4490                // mTextPaint.setLinearTextOn(true);
4491            }
4492        }
4493        */
4494
4495        final InputMethodState ims = mInputMethodState;
4496        final int cursorOffsetVertical = voffsetCursor - voffsetText;
4497        if (ims != null && ims.mBatchEditNesting == 0) {
4498            InputMethodManager imm = InputMethodManager.peekInstance();
4499            if (imm != null) {
4500                if (imm.isActive(this)) {
4501                    boolean reported = false;
4502                    if (ims.mContentChanged || ims.mSelectionModeChanged) {
4503                        // We are in extract mode and the content has changed
4504                        // in some way... just report complete new text to the
4505                        // input method.
4506                        reported = reportExtractedText();
4507                    }
4508                    if (!reported && highlight != null) {
4509                        int candStart = -1;
4510                        int candEnd = -1;
4511                        if (mText instanceof Spannable) {
4512                            Spannable sp = (Spannable)mText;
4513                            candStart = EditableInputConnection.getComposingSpanStart(sp);
4514                            candEnd = EditableInputConnection.getComposingSpanEnd(sp);
4515                        }
4516                        imm.updateSelection(this, selStart, selEnd, candStart, candEnd);
4517                    }
4518                }
4519
4520                if (imm.isWatchingCursor(this) && highlight != null) {
4521                    highlight.computeBounds(ims.mTmpRectF, true);
4522                    ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0;
4523
4524                    canvas.getMatrix().mapPoints(ims.mTmpOffset);
4525                    ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]);
4526
4527                    ims.mTmpRectF.offset(0, cursorOffsetVertical);
4528
4529                    ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5),
4530                            (int)(ims.mTmpRectF.top + 0.5),
4531                            (int)(ims.mTmpRectF.right + 0.5),
4532                            (int)(ims.mTmpRectF.bottom + 0.5));
4533
4534                    imm.updateCursor(this,
4535                            ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top,
4536                            ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom);
4537                }
4538            }
4539        }
4540
4541        if (mCorrectionHighlighter != null) {
4542            mCorrectionHighlighter.draw(canvas, cursorOffsetVertical);
4543        }
4544
4545        if (drawCursor) {
4546            drawCursor(canvas, cursorOffsetVertical);
4547            // Rely on the drawable entirely, do not draw the cursor line.
4548            // Has to be done after the IMM related code above which relies on the highlight.
4549            highlight = null;
4550        }
4551
4552        layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4553
4554        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
4555            canvas.translate((int) mMarquee.getGhostOffset(), 0.0f);
4556            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4557        }
4558
4559        /*  Comment out until we decide what to do about animations
4560        if (currentTransformation != null) {
4561            mTextPaint.setLinearTextOn(isLinearTextOn);
4562        }
4563        */
4564
4565        canvas.restore();
4566    }
4567
4568    private void updateCursorsPositions() {
4569        if (mCursorDrawableRes == 0) {
4570            mCursorCount = 0;
4571            return;
4572        }
4573
4574        final int offset = getSelectionStart();
4575        final int line = mLayout.getLineForOffset(offset);
4576        final int top = mLayout.getLineTop(line);
4577        final int bottom = mLayout.getLineTop(line + 1);
4578
4579        mCursorCount = mLayout.isLevelBoundary(offset) ? 2 : 1;
4580
4581        int middle = bottom;
4582        if (mCursorCount == 2) {
4583            // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)}
4584            middle = (top + bottom) >> 1;
4585        }
4586
4587        updateCursorPosition(0, top, middle, mLayout.getPrimaryHorizontal(offset));
4588
4589        if (mCursorCount == 2) {
4590            updateCursorPosition(1, middle, bottom, mLayout.getSecondaryHorizontal(offset));
4591        }
4592    }
4593
4594    private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) {
4595        if (mCursorDrawable[cursorIndex] == null)
4596            mCursorDrawable[cursorIndex] = mContext.getResources().getDrawable(mCursorDrawableRes);
4597
4598        if (mTempRect == null) mTempRect = new Rect();
4599
4600        mCursorDrawable[cursorIndex].getPadding(mTempRect);
4601        final int width = mCursorDrawable[cursorIndex].getIntrinsicWidth();
4602        horizontal = Math.max(0.5f, horizontal - 0.5f);
4603        final int left = (int) (horizontal) - mTempRect.left;
4604        mCursorDrawable[cursorIndex].setBounds(left, top - mTempRect.top, left + width,
4605                bottom + mTempRect.bottom);
4606    }
4607
4608    private void drawCursor(Canvas canvas, int cursorOffsetVertical) {
4609        final boolean translate = cursorOffsetVertical != 0;
4610        if (translate) canvas.translate(0, cursorOffsetVertical);
4611        for (int i = 0; i < mCursorCount; i++) {
4612            mCursorDrawable[i].draw(canvas);
4613        }
4614        if (translate) canvas.translate(0, -cursorOffsetVertical);
4615    }
4616
4617    @Override
4618    public void getFocusedRect(Rect r) {
4619        if (mLayout == null) {
4620            super.getFocusedRect(r);
4621            return;
4622        }
4623
4624        int sel = getSelectionEnd();
4625        if (sel < 0) {
4626            super.getFocusedRect(r);
4627            return;
4628        }
4629
4630        int line = mLayout.getLineForOffset(sel);
4631        r.top = mLayout.getLineTop(line);
4632        r.bottom = mLayout.getLineBottom(line);
4633
4634        r.left = (int) mLayout.getPrimaryHorizontal(sel);
4635        r.right = r.left + 1;
4636
4637        // Adjust for padding and gravity.
4638        int paddingLeft = getCompoundPaddingLeft();
4639        int paddingTop = getExtendedPaddingTop();
4640        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4641            paddingTop += getVerticalOffset(false);
4642        }
4643        r.offset(paddingLeft, paddingTop);
4644    }
4645
4646    /**
4647     * Return the number of lines of text, or 0 if the internal Layout has not
4648     * been built.
4649     */
4650    public int getLineCount() {
4651        return mLayout != null ? mLayout.getLineCount() : 0;
4652    }
4653
4654    /**
4655     * Return the baseline for the specified line (0...getLineCount() - 1)
4656     * If bounds is not null, return the top, left, right, bottom extents
4657     * of the specified line in it. If the internal Layout has not been built,
4658     * return 0 and set bounds to (0, 0, 0, 0)
4659     * @param line which line to examine (0..getLineCount() - 1)
4660     * @param bounds Optional. If not null, it returns the extent of the line
4661     * @return the Y-coordinate of the baseline
4662     */
4663    public int getLineBounds(int line, Rect bounds) {
4664        if (mLayout == null) {
4665            if (bounds != null) {
4666                bounds.set(0, 0, 0, 0);
4667            }
4668            return 0;
4669        }
4670        else {
4671            int baseline = mLayout.getLineBounds(line, bounds);
4672
4673            int voffset = getExtendedPaddingTop();
4674            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4675                voffset += getVerticalOffset(true);
4676            }
4677            if (bounds != null) {
4678                bounds.offset(getCompoundPaddingLeft(), voffset);
4679            }
4680            return baseline + voffset;
4681        }
4682    }
4683
4684    @Override
4685    public int getBaseline() {
4686        if (mLayout == null) {
4687            return super.getBaseline();
4688        }
4689
4690        int voffset = 0;
4691        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4692            voffset = getVerticalOffset(true);
4693        }
4694
4695        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
4696    }
4697
4698    @Override
4699    public boolean onKeyDown(int keyCode, KeyEvent event) {
4700        int which = doKeyDown(keyCode, event, null);
4701        if (which == 0) {
4702            // Go through default dispatching.
4703            return super.onKeyDown(keyCode, event);
4704        }
4705
4706        return true;
4707    }
4708
4709    @Override
4710    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
4711        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
4712
4713        int which = doKeyDown(keyCode, down, event);
4714        if (which == 0) {
4715            // Go through default dispatching.
4716            return super.onKeyMultiple(keyCode, repeatCount, event);
4717        }
4718        if (which == -1) {
4719            // Consumed the whole thing.
4720            return true;
4721        }
4722
4723        repeatCount--;
4724
4725        // We are going to dispatch the remaining events to either the input
4726        // or movement method.  To do this, we will just send a repeated stream
4727        // of down and up events until we have done the complete repeatCount.
4728        // It would be nice if those interfaces had an onKeyMultiple() method,
4729        // but adding that is a more complicated change.
4730        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
4731        if (which == 1) {
4732            mInput.onKeyUp(this, (Editable)mText, keyCode, up);
4733            while (--repeatCount > 0) {
4734                mInput.onKeyDown(this, (Editable)mText, keyCode, down);
4735                mInput.onKeyUp(this, (Editable)mText, keyCode, up);
4736            }
4737            hideErrorIfUnchanged();
4738
4739        } else if (which == 2) {
4740            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4741            while (--repeatCount > 0) {
4742                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
4743                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
4744            }
4745        }
4746
4747        return true;
4748    }
4749
4750    /**
4751     * Returns true if pressing ENTER in this field advances focus instead
4752     * of inserting the character.  This is true mostly in single-line fields,
4753     * but also in mail addresses and subjects which will display on multiple
4754     * lines but where it doesn't make sense to insert newlines.
4755     */
4756    private boolean shouldAdvanceFocusOnEnter() {
4757        if (mInput == null) {
4758            return false;
4759        }
4760
4761        if (mSingleLine) {
4762            return true;
4763        }
4764
4765        if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
4766            int variation = mInputType & EditorInfo.TYPE_MASK_VARIATION;
4767            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
4768                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
4769                return true;
4770            }
4771        }
4772
4773        return false;
4774    }
4775
4776    /**
4777     * Returns true if pressing TAB in this field advances focus instead
4778     * of inserting the character.  Insert tabs only in multi-line editors.
4779     */
4780    private boolean shouldAdvanceFocusOnTab() {
4781        if (mInput != null && !mSingleLine) {
4782            if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
4783                int variation = mInputType & EditorInfo.TYPE_MASK_VARIATION;
4784                if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
4785                        || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
4786                    return false;
4787                }
4788            }
4789        }
4790        return true;
4791    }
4792
4793    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
4794        if (!isEnabled()) {
4795            return 0;
4796        }
4797
4798        switch (keyCode) {
4799            case KeyEvent.KEYCODE_ENTER:
4800                mEnterKeyIsDown = true;
4801                if (event.hasNoModifiers()) {
4802                    // When mInputContentType is set, we know that we are
4803                    // running in a "modern" cupcake environment, so don't need
4804                    // to worry about the application trying to capture
4805                    // enter key events.
4806                    if (mInputContentType != null) {
4807                        // If there is an action listener, given them a
4808                        // chance to consume the event.
4809                        if (mInputContentType.onEditorActionListener != null &&
4810                                mInputContentType.onEditorActionListener.onEditorAction(
4811                                this, EditorInfo.IME_NULL, event)) {
4812                            mInputContentType.enterDown = true;
4813                            // We are consuming the enter key for them.
4814                            return -1;
4815                        }
4816                    }
4817
4818                    // If our editor should move focus when enter is pressed, or
4819                    // this is a generated event from an IME action button, then
4820                    // don't let it be inserted into the text.
4821                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
4822                            || shouldAdvanceFocusOnEnter()) {
4823                        if (mOnClickListener != null) {
4824                            return 0;
4825                        }
4826                        return -1;
4827                    }
4828                }
4829                break;
4830
4831            case KeyEvent.KEYCODE_DPAD_CENTER:
4832                mDPadCenterIsDown = true;
4833                if (event.hasNoModifiers()) {
4834                    if (shouldAdvanceFocusOnEnter()) {
4835                        return 0;
4836                    }
4837                }
4838                break;
4839
4840            case KeyEvent.KEYCODE_TAB:
4841                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
4842                    if (shouldAdvanceFocusOnTab()) {
4843                        return 0;
4844                    }
4845                }
4846                break;
4847
4848                // Has to be done on key down (and not on key up) to correctly be intercepted.
4849            case KeyEvent.KEYCODE_BACK:
4850                if (mSelectionActionMode != null) {
4851                    stopSelectionActionMode();
4852                    return -1;
4853                }
4854                break;
4855        }
4856
4857        if (mInput != null) {
4858            resetErrorChangedFlag();
4859
4860            boolean doDown = true;
4861            if (otherEvent != null) {
4862                try {
4863                    beginBatchEdit();
4864                    final boolean handled = mInput.onKeyOther(this, (Editable) mText, otherEvent);
4865                    hideErrorIfUnchanged();
4866                    doDown = false;
4867                    if (handled) {
4868                        return -1;
4869                    }
4870                } catch (AbstractMethodError e) {
4871                    // onKeyOther was added after 1.0, so if it isn't
4872                    // implemented we need to try to dispatch as a regular down.
4873                } finally {
4874                    endBatchEdit();
4875                }
4876            }
4877
4878            if (doDown) {
4879                beginBatchEdit();
4880                final boolean handled = mInput.onKeyDown(this, (Editable) mText, keyCode, event);
4881                endBatchEdit();
4882                hideErrorIfUnchanged();
4883                if (handled) return 1;
4884            }
4885        }
4886
4887        // bug 650865: sometimes we get a key event before a layout.
4888        // don't try to move around if we don't know the layout.
4889
4890        if (mMovement != null && mLayout != null) {
4891            boolean doDown = true;
4892            if (otherEvent != null) {
4893                try {
4894                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
4895                            otherEvent);
4896                    doDown = false;
4897                    if (handled) {
4898                        return -1;
4899                    }
4900                } catch (AbstractMethodError e) {
4901                    // onKeyOther was added after 1.0, so if it isn't
4902                    // implemented we need to try to dispatch as a regular down.
4903                }
4904            }
4905            if (doDown) {
4906                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
4907                    return 2;
4908            }
4909        }
4910
4911        return 0;
4912    }
4913
4914    /**
4915     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
4916     * can be recorded.
4917     * @hide
4918     */
4919    public void resetErrorChangedFlag() {
4920        /*
4921         * Keep track of what the error was before doing the input
4922         * so that if an input filter changed the error, we leave
4923         * that error showing.  Otherwise, we take down whatever
4924         * error was showing when the user types something.
4925         */
4926        mErrorWasChanged = false;
4927    }
4928
4929    /**
4930     * @hide
4931     */
4932    public void hideErrorIfUnchanged() {
4933        if (mError != null && !mErrorWasChanged) {
4934            setError(null, null);
4935        }
4936    }
4937
4938    @Override
4939    public boolean onKeyUp(int keyCode, KeyEvent event) {
4940        if (!isEnabled()) {
4941            return super.onKeyUp(keyCode, event);
4942        }
4943
4944        switch (keyCode) {
4945            case KeyEvent.KEYCODE_DPAD_CENTER:
4946                mDPadCenterIsDown = false;
4947                if (event.hasNoModifiers()) {
4948                    /*
4949                     * If there is a click listener, just call through to
4950                     * super, which will invoke it.
4951                     *
4952                     * If there isn't a click listener, try to show the soft
4953                     * input method.  (It will also
4954                     * call performClick(), but that won't do anything in
4955                     * this case.)
4956                     */
4957                    if (mOnClickListener == null) {
4958                        if (mMovement != null && mText instanceof Editable
4959                                && mLayout != null && onCheckIsTextEditor()) {
4960                            InputMethodManager imm = InputMethodManager.peekInstance();
4961                            if (imm != null) imm.showSoftInput(this, 0);
4962                        }
4963                    }
4964                }
4965                return super.onKeyUp(keyCode, event);
4966
4967            case KeyEvent.KEYCODE_ENTER:
4968                mEnterKeyIsDown = false;
4969                if (event.hasNoModifiers()) {
4970                    if (mInputContentType != null
4971                            && mInputContentType.onEditorActionListener != null
4972                            && mInputContentType.enterDown) {
4973                        mInputContentType.enterDown = false;
4974                        if (mInputContentType.onEditorActionListener.onEditorAction(
4975                                this, EditorInfo.IME_NULL, event)) {
4976                            return true;
4977                        }
4978                    }
4979
4980                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
4981                            || shouldAdvanceFocusOnEnter()) {
4982                        /*
4983                         * If there is a click listener, just call through to
4984                         * super, which will invoke it.
4985                         *
4986                         * If there isn't a click listener, try to advance focus,
4987                         * but still call through to super, which will reset the
4988                         * pressed state and longpress state.  (It will also
4989                         * call performClick(), but that won't do anything in
4990                         * this case.)
4991                         */
4992                        if (mOnClickListener == null) {
4993                            View v = focusSearch(FOCUS_DOWN);
4994
4995                            if (v != null) {
4996                                if (!v.requestFocus(FOCUS_DOWN)) {
4997                                    throw new IllegalStateException(
4998                                            "focus search returned a view " +
4999                                            "that wasn't able to take focus!");
5000                                }
5001
5002                                /*
5003                                 * Return true because we handled the key; super
5004                                 * will return false because there was no click
5005                                 * listener.
5006                                 */
5007                                super.onKeyUp(keyCode, event);
5008                                return true;
5009                            } else if ((event.getFlags()
5010                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
5011                                // No target for next focus, but make sure the IME
5012                                // if this came from it.
5013                                InputMethodManager imm = InputMethodManager.peekInstance();
5014                                if (imm != null && imm.isActive(this)) {
5015                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
5016                                }
5017                            }
5018                        }
5019                    }
5020                    return super.onKeyUp(keyCode, event);
5021                }
5022                break;
5023        }
5024
5025        if (mInput != null)
5026            if (mInput.onKeyUp(this, (Editable) mText, keyCode, event))
5027                return true;
5028
5029        if (mMovement != null && mLayout != null)
5030            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
5031                return true;
5032
5033        return super.onKeyUp(keyCode, event);
5034    }
5035
5036    @Override public boolean onCheckIsTextEditor() {
5037        return mInputType != EditorInfo.TYPE_NULL;
5038    }
5039
5040    @Override public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
5041        if (onCheckIsTextEditor() && isEnabled()) {
5042            if (mInputMethodState == null) {
5043                mInputMethodState = new InputMethodState();
5044            }
5045            outAttrs.inputType = mInputType;
5046            if (mInputContentType != null) {
5047                outAttrs.imeOptions = mInputContentType.imeOptions;
5048                outAttrs.privateImeOptions = mInputContentType.privateImeOptions;
5049                outAttrs.actionLabel = mInputContentType.imeActionLabel;
5050                outAttrs.actionId = mInputContentType.imeActionId;
5051                outAttrs.extras = mInputContentType.extras;
5052            } else {
5053                outAttrs.imeOptions = EditorInfo.IME_NULL;
5054            }
5055            if (focusSearch(FOCUS_DOWN) != null) {
5056                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
5057            }
5058            if (focusSearch(FOCUS_UP) != null) {
5059                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
5060            }
5061            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
5062                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
5063                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
5064                    // An action has not been set, but the enter key will move to
5065                    // the next focus, so set the action to that.
5066                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
5067                } else {
5068                    // An action has not been set, and there is no focus to move
5069                    // to, so let's just supply a "done" action.
5070                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
5071                }
5072                if (!shouldAdvanceFocusOnEnter()) {
5073                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5074                }
5075            }
5076            if (isMultilineInputType(outAttrs.inputType)) {
5077                // Multi-line text editors should always show an enter key.
5078                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5079            }
5080            outAttrs.hintText = mHint;
5081            if (mText instanceof Editable) {
5082                InputConnection ic = new EditableInputConnection(this);
5083                outAttrs.initialSelStart = getSelectionStart();
5084                outAttrs.initialSelEnd = getSelectionEnd();
5085                outAttrs.initialCapsMode = ic.getCursorCapsMode(mInputType);
5086                return ic;
5087            }
5088        }
5089        return null;
5090    }
5091
5092    /**
5093     * If this TextView contains editable content, extract a portion of it
5094     * based on the information in <var>request</var> in to <var>outText</var>.
5095     * @return Returns true if the text was successfully extracted, else false.
5096     */
5097    public boolean extractText(ExtractedTextRequest request,
5098            ExtractedText outText) {
5099        return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN,
5100                EXTRACT_UNKNOWN, outText);
5101    }
5102
5103    static final int EXTRACT_NOTHING = -2;
5104    static final int EXTRACT_UNKNOWN = -1;
5105
5106    boolean extractTextInternal(ExtractedTextRequest request,
5107            int partialStartOffset, int partialEndOffset, int delta,
5108            ExtractedText outText) {
5109        final CharSequence content = mText;
5110        if (content != null) {
5111            if (partialStartOffset != EXTRACT_NOTHING) {
5112                final int N = content.length();
5113                if (partialStartOffset < 0) {
5114                    outText.partialStartOffset = outText.partialEndOffset = -1;
5115                    partialStartOffset = 0;
5116                    partialEndOffset = N;
5117                } else {
5118                    // Now use the delta to determine the actual amount of text
5119                    // we need.
5120                    partialEndOffset += delta;
5121                    // Adjust offsets to ensure we contain full spans.
5122                    if (content instanceof Spanned) {
5123                        Spanned spanned = (Spanned)content;
5124                        Object[] spans = spanned.getSpans(partialStartOffset,
5125                                partialEndOffset, ParcelableSpan.class);
5126                        int i = spans.length;
5127                        while (i > 0) {
5128                            i--;
5129                            int j = spanned.getSpanStart(spans[i]);
5130                            if (j < partialStartOffset) partialStartOffset = j;
5131                            j = spanned.getSpanEnd(spans[i]);
5132                            if (j > partialEndOffset) partialEndOffset = j;
5133                        }
5134                    }
5135                    outText.partialStartOffset = partialStartOffset;
5136                    outText.partialEndOffset = partialEndOffset - delta;
5137
5138                    if (partialStartOffset > N) {
5139                        partialStartOffset = N;
5140                    } else if (partialStartOffset < 0) {
5141                        partialStartOffset = 0;
5142                    }
5143                    if (partialEndOffset > N) {
5144                        partialEndOffset = N;
5145                    } else if (partialEndOffset < 0) {
5146                        partialEndOffset = 0;
5147                    }
5148                }
5149                if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) {
5150                    outText.text = content.subSequence(partialStartOffset,
5151                            partialEndOffset);
5152                } else {
5153                    outText.text = TextUtils.substring(content, partialStartOffset,
5154                            partialEndOffset);
5155                }
5156            } else {
5157                outText.partialStartOffset = 0;
5158                outText.partialEndOffset = 0;
5159                outText.text = "";
5160            }
5161            outText.flags = 0;
5162            if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) {
5163                outText.flags |= ExtractedText.FLAG_SELECTING;
5164            }
5165            if (mSingleLine) {
5166                outText.flags |= ExtractedText.FLAG_SINGLE_LINE;
5167            }
5168            outText.startOffset = 0;
5169            outText.selectionStart = getSelectionStart();
5170            outText.selectionEnd = getSelectionEnd();
5171            return true;
5172        }
5173        return false;
5174    }
5175
5176    boolean reportExtractedText() {
5177        final InputMethodState ims = mInputMethodState;
5178        if (ims != null) {
5179            final boolean contentChanged = ims.mContentChanged;
5180            if (contentChanged || ims.mSelectionModeChanged) {
5181                ims.mContentChanged = false;
5182                ims.mSelectionModeChanged = false;
5183                final ExtractedTextRequest req = mInputMethodState.mExtracting;
5184                if (req != null) {
5185                    InputMethodManager imm = InputMethodManager.peekInstance();
5186                    if (imm != null) {
5187                        if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Retrieving extracted start="
5188                                + ims.mChangedStart + " end=" + ims.mChangedEnd
5189                                + " delta=" + ims.mChangedDelta);
5190                        if (ims.mChangedStart < 0 && !contentChanged) {
5191                            ims.mChangedStart = EXTRACT_NOTHING;
5192                        }
5193                        if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd,
5194                                ims.mChangedDelta, ims.mTmpExtracted)) {
5195                            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Reporting extracted start="
5196                                    + ims.mTmpExtracted.partialStartOffset
5197                                    + " end=" + ims.mTmpExtracted.partialEndOffset
5198                                    + ": " + ims.mTmpExtracted.text);
5199                            imm.updateExtractedText(this, req.token,
5200                                    mInputMethodState.mTmpExtracted);
5201                            ims.mChangedStart = EXTRACT_UNKNOWN;
5202                            ims.mChangedEnd = EXTRACT_UNKNOWN;
5203                            ims.mChangedDelta = 0;
5204                            ims.mContentChanged = false;
5205                            return true;
5206                        }
5207                    }
5208                }
5209            }
5210        }
5211        return false;
5212    }
5213
5214    /**
5215     * This is used to remove all style-impacting spans from text before new
5216     * extracted text is being replaced into it, so that we don't have any
5217     * lingering spans applied during the replace.
5218     */
5219    static void removeParcelableSpans(Spannable spannable, int start, int end) {
5220        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
5221        int i = spans.length;
5222        while (i > 0) {
5223            i--;
5224            spannable.removeSpan(spans[i]);
5225        }
5226    }
5227
5228    /**
5229     * Apply to this text view the given extracted text, as previously
5230     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
5231     */
5232    public void setExtractedText(ExtractedText text) {
5233        Editable content = getEditableText();
5234        if (text.text != null) {
5235            if (content == null) {
5236                setText(text.text, TextView.BufferType.EDITABLE);
5237            } else if (text.partialStartOffset < 0) {
5238                removeParcelableSpans(content, 0, content.length());
5239                content.replace(0, content.length(), text.text);
5240            } else {
5241                final int N = content.length();
5242                int start = text.partialStartOffset;
5243                if (start > N) start = N;
5244                int end = text.partialEndOffset;
5245                if (end > N) end = N;
5246                removeParcelableSpans(content, start, end);
5247                content.replace(start, end, text.text);
5248            }
5249        }
5250
5251        // Now set the selection position...  make sure it is in range, to
5252        // avoid crashes.  If this is a partial update, it is possible that
5253        // the underlying text may have changed, causing us problems here.
5254        // Also we just don't want to trust clients to do the right thing.
5255        Spannable sp = (Spannable)getText();
5256        final int N = sp.length();
5257        int start = text.selectionStart;
5258        if (start < 0) start = 0;
5259        else if (start > N) start = N;
5260        int end = text.selectionEnd;
5261        if (end < 0) end = 0;
5262        else if (end > N) end = N;
5263        Selection.setSelection(sp, start, end);
5264
5265        // Finally, update the selection mode.
5266        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
5267            MetaKeyKeyListener.startSelecting(this, sp);
5268        } else {
5269            MetaKeyKeyListener.stopSelecting(this, sp);
5270        }
5271    }
5272
5273    /**
5274     * @hide
5275     */
5276    public void setExtracting(ExtractedTextRequest req) {
5277        if (mInputMethodState != null) {
5278            mInputMethodState.mExtracting = req;
5279        }
5280        // This stops a possible text selection mode. Maybe not intended.
5281        hideControllers();
5282    }
5283
5284    /**
5285     * Called by the framework in response to a text completion from
5286     * the current input method, provided by it calling
5287     * {@link InputConnection#commitCompletion
5288     * InputConnection.commitCompletion()}.  The default implementation does
5289     * nothing; text views that are supporting auto-completion should override
5290     * this to do their desired behavior.
5291     *
5292     * @param text The auto complete text the user has selected.
5293     */
5294    public void onCommitCompletion(CompletionInfo text) {
5295        // intentionally empty
5296    }
5297
5298    /**
5299     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
5300     * a dictionnary) from the current input method, provided by it calling
5301     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
5302     * implementation flashes the background of the corrected word to provide feedback to the user.
5303     *
5304     * @param info The auto correct info about the text that was corrected.
5305     */
5306    public void onCommitCorrection(CorrectionInfo info) {
5307        if (mCorrectionHighlighter == null) {
5308            mCorrectionHighlighter = new CorrectionHighlighter();
5309        } else {
5310            mCorrectionHighlighter.invalidate(false);
5311        }
5312
5313        mCorrectionHighlighter.highlight(info);
5314    }
5315
5316    private class CorrectionHighlighter {
5317        private final Path mPath = new Path();
5318        private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
5319        private int mStart, mEnd;
5320        private long mFadingStartTime;
5321        private final static int FADE_OUT_DURATION = 400;
5322
5323        public CorrectionHighlighter() {
5324            mPaint.setCompatibilityScaling(getResources().getCompatibilityInfo().applicationScale);
5325            mPaint.setStyle(Paint.Style.FILL);
5326        }
5327
5328        public void highlight(CorrectionInfo info) {
5329            mStart = info.getOffset();
5330            mEnd = mStart + info.getNewText().length();
5331            mFadingStartTime = SystemClock.uptimeMillis();
5332
5333            if (mStart < 0 || mEnd < 0) {
5334                stopAnimation();
5335            }
5336        }
5337
5338        public void draw(Canvas canvas, int cursorOffsetVertical) {
5339            if (updatePath() && updatePaint()) {
5340                if (cursorOffsetVertical != 0) {
5341                    canvas.translate(0, cursorOffsetVertical);
5342                }
5343
5344                canvas.drawPath(mPath, mPaint);
5345
5346                if (cursorOffsetVertical != 0) {
5347                    canvas.translate(0, -cursorOffsetVertical);
5348                }
5349                invalidate(true);
5350            } else {
5351                stopAnimation();
5352                invalidate(false);
5353            }
5354        }
5355
5356        private boolean updatePaint() {
5357            final long duration = SystemClock.uptimeMillis() - mFadingStartTime;
5358            if (duration > FADE_OUT_DURATION) return false;
5359
5360            final float coef = 1.0f - (float) duration / FADE_OUT_DURATION;
5361            final int highlightColorAlpha = Color.alpha(mHighlightColor);
5362            final int color = (mHighlightColor & 0x00FFFFFF) +
5363                    ((int) (highlightColorAlpha * coef) << 24);
5364            mPaint.setColor(color);
5365            return true;
5366        }
5367
5368        private boolean updatePath() {
5369            final Layout layout = TextView.this.mLayout;
5370            if (layout == null) return false;
5371
5372            // Update in case text is edited while the animation is run
5373            final int length = mText.length();
5374            int start = Math.min(length, mStart);
5375            int end = Math.min(length, mEnd);
5376
5377            mPath.reset();
5378            TextView.this.mLayout.getSelectionPath(start, end, mPath);
5379            return true;
5380        }
5381
5382        private void invalidate(boolean delayed) {
5383            if (TextView.this.mLayout == null) return;
5384
5385            synchronized (sTempRect) {
5386                mPath.computeBounds(sTempRect, false);
5387
5388                int left = getCompoundPaddingLeft();
5389                int top = getExtendedPaddingTop() + getVerticalOffset(true);
5390
5391                if (delayed) {
5392                    TextView.this.postInvalidateDelayed(16, // 60 Hz update
5393                            left + (int) sTempRect.left, top + (int) sTempRect.top,
5394                            left + (int) sTempRect.right, top + (int) sTempRect.bottom);
5395                } else {
5396                    TextView.this.postInvalidate((int) sTempRect.left, (int) sTempRect.top,
5397                            (int) sTempRect.right, (int) sTempRect.bottom);
5398                }
5399            }
5400        }
5401
5402        private void stopAnimation() {
5403            TextView.this.mCorrectionHighlighter = null;
5404        }
5405    }
5406
5407    public void beginBatchEdit() {
5408        mInBatchEditControllers = true;
5409        final InputMethodState ims = mInputMethodState;
5410        if (ims != null) {
5411            int nesting = ++ims.mBatchEditNesting;
5412            if (nesting == 1) {
5413                ims.mCursorChanged = false;
5414                ims.mChangedDelta = 0;
5415                if (ims.mContentChanged) {
5416                    // We already have a pending change from somewhere else,
5417                    // so turn this into a full update.
5418                    ims.mChangedStart = 0;
5419                    ims.mChangedEnd = mText.length();
5420                } else {
5421                    ims.mChangedStart = EXTRACT_UNKNOWN;
5422                    ims.mChangedEnd = EXTRACT_UNKNOWN;
5423                    ims.mContentChanged = false;
5424                }
5425                onBeginBatchEdit();
5426            }
5427        }
5428    }
5429
5430    public void endBatchEdit() {
5431        mInBatchEditControllers = false;
5432        final InputMethodState ims = mInputMethodState;
5433        if (ims != null) {
5434            int nesting = --ims.mBatchEditNesting;
5435            if (nesting == 0) {
5436                finishBatchEdit(ims);
5437            }
5438        }
5439    }
5440
5441    void ensureEndedBatchEdit() {
5442        final InputMethodState ims = mInputMethodState;
5443        if (ims != null && ims.mBatchEditNesting != 0) {
5444            ims.mBatchEditNesting = 0;
5445            finishBatchEdit(ims);
5446        }
5447    }
5448
5449    void finishBatchEdit(final InputMethodState ims) {
5450        onEndBatchEdit();
5451
5452        if (ims.mContentChanged || ims.mSelectionModeChanged) {
5453            updateAfterEdit();
5454            reportExtractedText();
5455        } else if (ims.mCursorChanged) {
5456            // Cheezy way to get us to report the current cursor location.
5457            invalidateCursor();
5458        }
5459    }
5460
5461    void updateAfterEdit() {
5462        invalidate();
5463        int curs = getSelectionStart();
5464
5465        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5466            registerForPreDraw();
5467        }
5468
5469        if (curs >= 0) {
5470            mHighlightPathBogus = true;
5471            makeBlink();
5472        }
5473
5474        checkForResize();
5475    }
5476
5477    /**
5478     * Called by the framework in response to a request to begin a batch
5479     * of edit operations through a call to link {@link #beginBatchEdit()}.
5480     */
5481    public void onBeginBatchEdit() {
5482        // intentionally empty
5483    }
5484
5485    /**
5486     * Called by the framework in response to a request to end a batch
5487     * of edit operations through a call to link {@link #endBatchEdit}.
5488     */
5489    public void onEndBatchEdit() {
5490        // intentionally empty
5491    }
5492
5493    /**
5494     * Called by the framework in response to a private command from the
5495     * current method, provided by it calling
5496     * {@link InputConnection#performPrivateCommand
5497     * InputConnection.performPrivateCommand()}.
5498     *
5499     * @param action The action name of the command.
5500     * @param data Any additional data for the command.  This may be null.
5501     * @return Return true if you handled the command, else false.
5502     */
5503    public boolean onPrivateIMECommand(String action, Bundle data) {
5504        return false;
5505    }
5506
5507    private void nullLayouts() {
5508        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
5509            mSavedLayout = (BoringLayout) mLayout;
5510        }
5511        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
5512            mSavedHintLayout = (BoringLayout) mHintLayout;
5513        }
5514
5515        mLayout = mHintLayout = null;
5516
5517        // Since it depends on the value of mLayout
5518        prepareCursorControllers();
5519    }
5520
5521    /**
5522     * Make a new Layout based on the already-measured size of the view,
5523     * on the assumption that it was measured correctly at some point.
5524     */
5525    private void assumeLayout() {
5526        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5527
5528        if (width < 1) {
5529            width = 0;
5530        }
5531
5532        int physicalWidth = width;
5533
5534        if (mHorizontallyScrolling) {
5535            width = VERY_WIDE;
5536        }
5537
5538        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
5539                      physicalWidth, false);
5540    }
5541
5542    @Override
5543    protected void resetLayoutDirectionResolution() {
5544        super.resetLayoutDirectionResolution();
5545
5546        if (mLayoutAlignment != null &&
5547                (mTextAlign == TextAlign.VIEW_START ||
5548                mTextAlign == TextAlign.VIEW_END)) {
5549            mLayoutAlignment = null;
5550        }
5551    }
5552
5553    private Layout.Alignment getLayoutAlignment() {
5554        if (mLayoutAlignment == null) {
5555            Layout.Alignment alignment;
5556            TextAlign textAlign = mTextAlign;
5557            switch (textAlign) {
5558                case INHERIT:
5559                    // fall through to gravity temporarily
5560                    // intention is to inherit value through view hierarchy.
5561                case GRAVITY:
5562                    switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
5563                        case Gravity.START:
5564                            alignment = Layout.Alignment.ALIGN_NORMAL;
5565                            break;
5566                        case Gravity.END:
5567                            alignment = Layout.Alignment.ALIGN_OPPOSITE;
5568                            break;
5569                        case Gravity.LEFT:
5570                            alignment = Layout.Alignment.ALIGN_LEFT;
5571                            break;
5572                        case Gravity.RIGHT:
5573                            alignment = Layout.Alignment.ALIGN_RIGHT;
5574                            break;
5575                        case Gravity.CENTER_HORIZONTAL:
5576                            alignment = Layout.Alignment.ALIGN_CENTER;
5577                            break;
5578                        default:
5579                            alignment = Layout.Alignment.ALIGN_NORMAL;
5580                            break;
5581                    }
5582                    break;
5583                case TEXT_START:
5584                    alignment = Layout.Alignment.ALIGN_NORMAL;
5585                    break;
5586                case TEXT_END:
5587                    alignment = Layout.Alignment.ALIGN_OPPOSITE;
5588                    break;
5589                case CENTER:
5590                    alignment = Layout.Alignment.ALIGN_CENTER;
5591                    break;
5592                case VIEW_START:
5593                    alignment = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
5594                            Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
5595                    break;
5596                case VIEW_END:
5597                    alignment = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
5598                            Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
5599                    break;
5600                default:
5601                    alignment = Layout.Alignment.ALIGN_NORMAL;
5602                    break;
5603            }
5604            mLayoutAlignment = alignment;
5605        }
5606        return mLayoutAlignment;
5607    }
5608
5609    /**
5610     * The width passed in is now the desired layout width,
5611     * not the full view width with padding.
5612     * {@hide}
5613     */
5614    protected void makeNewLayout(int w, int hintWidth,
5615                                 BoringLayout.Metrics boring,
5616                                 BoringLayout.Metrics hintBoring,
5617                                 int ellipsisWidth, boolean bringIntoView) {
5618        stopMarquee();
5619
5620        mHighlightPathBogus = true;
5621
5622        if (w < 0) {
5623            w = 0;
5624        }
5625        if (hintWidth < 0) {
5626            hintWidth = 0;
5627        }
5628
5629        Layout.Alignment alignment = getLayoutAlignment();
5630        boolean shouldEllipsize = mEllipsize != null && mInput == null;
5631
5632        if (mText instanceof Spannable) {
5633            mLayout = new DynamicLayout(mText, mTransformed, mTextPaint, w,
5634                    alignment, mSpacingMult,
5635                    mSpacingAdd, mIncludePad, mInput == null ? mEllipsize : null,
5636                    ellipsisWidth);
5637        } else {
5638            if (boring == UNKNOWN_BORING) {
5639                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mBoring);
5640                if (boring != null) {
5641                    mBoring = boring;
5642                }
5643            }
5644
5645            if (boring != null) {
5646                if (boring.width <= w &&
5647                    (mEllipsize == null || boring.width <= ellipsisWidth)) {
5648                    if (mSavedLayout != null) {
5649                        mLayout = mSavedLayout.
5650                                replaceOrMake(mTransformed, mTextPaint,
5651                                w, alignment, mSpacingMult, mSpacingAdd,
5652                                boring, mIncludePad);
5653                    } else {
5654                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
5655                                w, alignment, mSpacingMult, mSpacingAdd,
5656                                boring, mIncludePad);
5657                    }
5658
5659                    mSavedLayout = (BoringLayout) mLayout;
5660                } else if (shouldEllipsize && boring.width <= w) {
5661                    if (mSavedLayout != null) {
5662                        mLayout = mSavedLayout.
5663                                replaceOrMake(mTransformed, mTextPaint,
5664                                w, alignment, mSpacingMult, mSpacingAdd,
5665                                boring, mIncludePad, mEllipsize,
5666                                ellipsisWidth);
5667                    } else {
5668                        mLayout = BoringLayout.make(mTransformed, mTextPaint,
5669                                w, alignment, mSpacingMult, mSpacingAdd,
5670                                boring, mIncludePad, mEllipsize,
5671                                ellipsisWidth);
5672                    }
5673                } else if (shouldEllipsize) {
5674                    mLayout = new StaticLayout(mTransformed,
5675                                0, mTransformed.length(),
5676                                mTextPaint, w, alignment, mSpacingMult,
5677                                mSpacingAdd, mIncludePad, mEllipsize,
5678                                ellipsisWidth);
5679                } else {
5680                    mLayout = new StaticLayout(mTransformed, mTextPaint,
5681                            w, alignment, mSpacingMult, mSpacingAdd,
5682                            mIncludePad);
5683                }
5684            } else if (shouldEllipsize) {
5685                mLayout = new StaticLayout(mTransformed,
5686                            0, mTransformed.length(),
5687                            mTextPaint, w, alignment, mSpacingMult,
5688                            mSpacingAdd, mIncludePad, mEllipsize,
5689                            ellipsisWidth);
5690            } else {
5691                mLayout = new StaticLayout(mTransformed, mTextPaint,
5692                        w, alignment, mSpacingMult, mSpacingAdd,
5693                        mIncludePad);
5694            }
5695        }
5696
5697        shouldEllipsize = mEllipsize != null;
5698        mHintLayout = null;
5699
5700        if (mHint != null) {
5701            if (shouldEllipsize) hintWidth = w;
5702
5703            if (hintBoring == UNKNOWN_BORING) {
5704                hintBoring = BoringLayout.isBoring(mHint, mTextPaint,
5705                                                   mHintBoring);
5706                if (hintBoring != null) {
5707                    mHintBoring = hintBoring;
5708                }
5709            }
5710
5711            if (hintBoring != null) {
5712                if (hintBoring.width <= hintWidth &&
5713                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
5714                    if (mSavedHintLayout != null) {
5715                        mHintLayout = mSavedHintLayout.
5716                                replaceOrMake(mHint, mTextPaint,
5717                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5718                                hintBoring, mIncludePad);
5719                    } else {
5720                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5721                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5722                                hintBoring, mIncludePad);
5723                    }
5724
5725                    mSavedHintLayout = (BoringLayout) mHintLayout;
5726                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
5727                    if (mSavedHintLayout != null) {
5728                        mHintLayout = mSavedHintLayout.
5729                                replaceOrMake(mHint, mTextPaint,
5730                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5731                                hintBoring, mIncludePad, mEllipsize,
5732                                ellipsisWidth);
5733                    } else {
5734                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5735                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5736                                hintBoring, mIncludePad, mEllipsize,
5737                                ellipsisWidth);
5738                    }
5739                } else if (shouldEllipsize) {
5740                    mHintLayout = new StaticLayout(mHint,
5741                                0, mHint.length(),
5742                                mTextPaint, hintWidth, alignment, mSpacingMult,
5743                                mSpacingAdd, mIncludePad, mEllipsize,
5744                                ellipsisWidth);
5745                } else {
5746                    mHintLayout = new StaticLayout(mHint, mTextPaint,
5747                            hintWidth, alignment, mSpacingMult, mSpacingAdd,
5748                            mIncludePad);
5749                }
5750            } else if (shouldEllipsize) {
5751                mHintLayout = new StaticLayout(mHint,
5752                            0, mHint.length(),
5753                            mTextPaint, hintWidth, alignment, mSpacingMult,
5754                            mSpacingAdd, mIncludePad, mEllipsize,
5755                            ellipsisWidth);
5756            } else {
5757                mHintLayout = new StaticLayout(mHint, mTextPaint,
5758                        hintWidth, alignment, mSpacingMult, mSpacingAdd,
5759                        mIncludePad);
5760            }
5761        }
5762
5763        if (bringIntoView) {
5764            registerForPreDraw();
5765        }
5766
5767        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5768            if (!compressText(ellipsisWidth)) {
5769                final int height = mLayoutParams.height;
5770                // If the size of the view does not depend on the size of the text, try to
5771                // start the marquee immediately
5772                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
5773                    startMarquee();
5774                } else {
5775                    // Defer the start of the marquee until we know our width (see setFrame())
5776                    mRestartMarquee = true;
5777                }
5778            }
5779        }
5780
5781        // CursorControllers need a non-null mLayout
5782        prepareCursorControllers();
5783    }
5784
5785    private boolean compressText(float width) {
5786        if (isHardwareAccelerated()) return false;
5787
5788        // Only compress the text if it hasn't been compressed by the previous pass
5789        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
5790                mTextPaint.getTextScaleX() == 1.0f) {
5791            final float textWidth = mLayout.getLineWidth(0);
5792            final float overflow = (textWidth + 1.0f - width) / width;
5793            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
5794                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
5795                post(new Runnable() {
5796                    public void run() {
5797                        requestLayout();
5798                    }
5799                });
5800                return true;
5801            }
5802        }
5803
5804        return false;
5805    }
5806
5807    private static int desired(Layout layout) {
5808        int n = layout.getLineCount();
5809        CharSequence text = layout.getText();
5810        float max = 0;
5811
5812        // if any line was wrapped, we can't use it.
5813        // but it's ok for the last line not to have a newline
5814
5815        for (int i = 0; i < n - 1; i++) {
5816            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
5817                return -1;
5818        }
5819
5820        for (int i = 0; i < n; i++) {
5821            max = Math.max(max, layout.getLineWidth(i));
5822        }
5823
5824        return (int) FloatMath.ceil(max);
5825    }
5826
5827    /**
5828     * Set whether the TextView includes extra top and bottom padding to make
5829     * room for accents that go above the normal ascent and descent.
5830     * The default is true.
5831     *
5832     * @attr ref android.R.styleable#TextView_includeFontPadding
5833     */
5834    public void setIncludeFontPadding(boolean includepad) {
5835        mIncludePad = includepad;
5836
5837        if (mLayout != null) {
5838            nullLayouts();
5839            requestLayout();
5840            invalidate();
5841        }
5842    }
5843
5844    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
5845
5846    @Override
5847    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
5848        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
5849        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
5850        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
5851        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
5852
5853        int width;
5854        int height;
5855
5856        BoringLayout.Metrics boring = UNKNOWN_BORING;
5857        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
5858
5859        int des = -1;
5860        boolean fromexisting = false;
5861
5862        if (widthMode == MeasureSpec.EXACTLY) {
5863            // Parent has told us how big to be. So be it.
5864            width = widthSize;
5865        } else {
5866            if (mLayout != null && mEllipsize == null) {
5867                des = desired(mLayout);
5868            }
5869
5870            if (des < 0) {
5871                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mBoring);
5872                if (boring != null) {
5873                    mBoring = boring;
5874                }
5875            } else {
5876                fromexisting = true;
5877            }
5878
5879            if (boring == null || boring == UNKNOWN_BORING) {
5880                if (des < 0) {
5881                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
5882                }
5883
5884                width = des;
5885            } else {
5886                width = boring.width;
5887            }
5888
5889            final Drawables dr = mDrawables;
5890            if (dr != null) {
5891                width = Math.max(width, dr.mDrawableWidthTop);
5892                width = Math.max(width, dr.mDrawableWidthBottom);
5893            }
5894
5895            if (mHint != null) {
5896                int hintDes = -1;
5897                int hintWidth;
5898
5899                if (mHintLayout != null && mEllipsize == null) {
5900                    hintDes = desired(mHintLayout);
5901                }
5902
5903                if (hintDes < 0) {
5904                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mHintBoring);
5905                    if (hintBoring != null) {
5906                        mHintBoring = hintBoring;
5907                    }
5908                }
5909
5910                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
5911                    if (hintDes < 0) {
5912                        hintDes = (int) FloatMath.ceil(
5913                                Layout.getDesiredWidth(mHint, mTextPaint));
5914                    }
5915
5916                    hintWidth = hintDes;
5917                } else {
5918                    hintWidth = hintBoring.width;
5919                }
5920
5921                if (hintWidth > width) {
5922                    width = hintWidth;
5923                }
5924            }
5925
5926            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
5927
5928            if (mMaxWidthMode == EMS) {
5929                width = Math.min(width, mMaxWidth * getLineHeight());
5930            } else {
5931                width = Math.min(width, mMaxWidth);
5932            }
5933
5934            if (mMinWidthMode == EMS) {
5935                width = Math.max(width, mMinWidth * getLineHeight());
5936            } else {
5937                width = Math.max(width, mMinWidth);
5938            }
5939
5940            // Check against our minimum width
5941            width = Math.max(width, getSuggestedMinimumWidth());
5942
5943            if (widthMode == MeasureSpec.AT_MOST) {
5944                width = Math.min(widthSize, width);
5945            }
5946        }
5947
5948        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
5949        int unpaddedWidth = want;
5950
5951        if (mHorizontallyScrolling) want = VERY_WIDE;
5952
5953        int hintWant = want;
5954        int hintWidth = mHintLayout == null ? hintWant : mHintLayout.getWidth();
5955
5956        if (mLayout == null) {
5957            makeNewLayout(want, hintWant, boring, hintBoring,
5958                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
5959        } else if ((mLayout.getWidth() != want) || (hintWidth != hintWant) ||
5960                   (mLayout.getEllipsizedWidth() !=
5961                        width - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
5962            if (mHint == null && mEllipsize == null &&
5963                    want > mLayout.getWidth() &&
5964                    (mLayout instanceof BoringLayout ||
5965                            (fromexisting && des >= 0 && des <= want))) {
5966                mLayout.increaseWidthTo(want);
5967            } else {
5968                makeNewLayout(want, hintWant, boring, hintBoring,
5969                              width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
5970            }
5971        } else {
5972            // Width has not changed.
5973        }
5974
5975        if (heightMode == MeasureSpec.EXACTLY) {
5976            // Parent has told us how big to be. So be it.
5977            height = heightSize;
5978            mDesiredHeightAtMeasure = -1;
5979        } else {
5980            int desired = getDesiredHeight();
5981
5982            height = desired;
5983            mDesiredHeightAtMeasure = desired;
5984
5985            if (heightMode == MeasureSpec.AT_MOST) {
5986                height = Math.min(desired, heightSize);
5987            }
5988        }
5989
5990        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
5991        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
5992            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
5993        }
5994
5995        /*
5996         * We didn't let makeNewLayout() register to bring the cursor into view,
5997         * so do it here if there is any possibility that it is needed.
5998         */
5999        if (mMovement != null ||
6000            mLayout.getWidth() > unpaddedWidth ||
6001            mLayout.getHeight() > unpaddedHeight) {
6002            registerForPreDraw();
6003        } else {
6004            scrollTo(0, 0);
6005        }
6006
6007        setMeasuredDimension(width, height);
6008    }
6009
6010    private int getDesiredHeight() {
6011        return Math.max(
6012                getDesiredHeight(mLayout, true),
6013                getDesiredHeight(mHintLayout, mEllipsize != null));
6014    }
6015
6016    private int getDesiredHeight(Layout layout, boolean cap) {
6017        if (layout == null) {
6018            return 0;
6019        }
6020
6021        int linecount = layout.getLineCount();
6022        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
6023        int desired = layout.getLineTop(linecount);
6024
6025        final Drawables dr = mDrawables;
6026        if (dr != null) {
6027            desired = Math.max(desired, dr.mDrawableHeightLeft);
6028            desired = Math.max(desired, dr.mDrawableHeightRight);
6029        }
6030
6031        desired += pad;
6032        layout.setMaximumVisibleLineCount(0);
6033
6034        if (mMaxMode == LINES) {
6035            /*
6036             * Don't cap the hint to a certain number of lines.
6037             * (Do cap it, though, if we have a maximum pixel height.)
6038             */
6039            if (cap) {
6040                if (linecount > mMaximum) {
6041                    layout.setMaximumVisibleLineCount(mMaximum);
6042                    desired = layout.getLineTop(mMaximum);
6043
6044                    if (dr != null) {
6045                        desired = Math.max(desired, dr.mDrawableHeightLeft);
6046                        desired = Math.max(desired, dr.mDrawableHeightRight);
6047                    }
6048
6049                    desired += pad;
6050                    linecount = mMaximum;
6051                }
6052            }
6053        } else {
6054            desired = Math.min(desired, mMaximum);
6055        }
6056
6057        if (mMinMode == LINES) {
6058            if (linecount < mMinimum) {
6059                desired += getLineHeight() * (mMinimum - linecount);
6060            }
6061        } else {
6062            desired = Math.max(desired, mMinimum);
6063        }
6064
6065        // Check against our minimum height
6066        desired = Math.max(desired, getSuggestedMinimumHeight());
6067
6068        return desired;
6069    }
6070
6071    /**
6072     * Check whether a change to the existing text layout requires a
6073     * new view layout.
6074     */
6075    private void checkForResize() {
6076        boolean sizeChanged = false;
6077
6078        if (mLayout != null) {
6079            // Check if our width changed
6080            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
6081                sizeChanged = true;
6082                invalidate();
6083            }
6084
6085            // Check if our height changed
6086            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
6087                int desiredHeight = getDesiredHeight();
6088
6089                if (desiredHeight != this.getHeight()) {
6090                    sizeChanged = true;
6091                }
6092            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
6093                if (mDesiredHeightAtMeasure >= 0) {
6094                    int desiredHeight = getDesiredHeight();
6095
6096                    if (desiredHeight != mDesiredHeightAtMeasure) {
6097                        sizeChanged = true;
6098                    }
6099                }
6100            }
6101        }
6102
6103        if (sizeChanged) {
6104            requestLayout();
6105            // caller will have already invalidated
6106        }
6107    }
6108
6109    /**
6110     * Check whether entirely new text requires a new view layout
6111     * or merely a new text layout.
6112     */
6113    private void checkForRelayout() {
6114        // If we have a fixed width, we can just swap in a new text layout
6115        // if the text height stays the same or if the view height is fixed.
6116
6117        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
6118                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
6119                (mHint == null || mHintLayout != null) &&
6120                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
6121            // Static width, so try making a new text layout.
6122
6123            int oldht = mLayout.getHeight();
6124            int want = mLayout.getWidth();
6125            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
6126
6127            /*
6128             * No need to bring the text into view, since the size is not
6129             * changing (unless we do the requestLayout(), in which case it
6130             * will happen at measure).
6131             */
6132            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
6133                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
6134                          false);
6135
6136            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
6137                // In a fixed-height view, so use our new text layout.
6138                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
6139                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
6140                    invalidate();
6141                    return;
6142                }
6143
6144                // Dynamic height, but height has stayed the same,
6145                // so use our new text layout.
6146                if (mLayout.getHeight() == oldht &&
6147                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
6148                    invalidate();
6149                    return;
6150                }
6151            }
6152
6153            // We lose: the height has changed and we have a dynamic height.
6154            // Request a new view layout using our new text layout.
6155            requestLayout();
6156            invalidate();
6157        } else {
6158            // Dynamic width, so we have no choice but to request a new
6159            // view layout with a new text layout.
6160
6161            nullLayouts();
6162            requestLayout();
6163            invalidate();
6164        }
6165    }
6166
6167    /**
6168     * Returns true if anything changed.
6169     */
6170    private boolean bringTextIntoView() {
6171        int line = 0;
6172        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6173            line = mLayout.getLineCount() - 1;
6174        }
6175
6176        Layout.Alignment a = mLayout.getParagraphAlignment(line);
6177        int dir = mLayout.getParagraphDirection(line);
6178        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6179        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6180        int ht = mLayout.getHeight();
6181
6182        int scrollx, scrolly;
6183
6184        if (a == Layout.Alignment.ALIGN_CENTER) {
6185            /*
6186             * Keep centered if possible, or, if it is too wide to fit,
6187             * keep leading edge in view.
6188             */
6189
6190            int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
6191            int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
6192
6193            if (right - left < hspace) {
6194                scrollx = (right + left) / 2 - hspace / 2;
6195            } else {
6196                if (dir < 0) {
6197                    scrollx = right - hspace;
6198                } else {
6199                    scrollx = left;
6200                }
6201            }
6202        } else if (a == Layout.Alignment.ALIGN_NORMAL) {
6203            /*
6204             * Keep leading edge in view.
6205             */
6206
6207            if (dir < 0) {
6208                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
6209                scrollx = right - hspace;
6210            } else {
6211                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
6212            }
6213        } else /* a == Layout.Alignment.ALIGN_OPPOSITE */ {
6214            /*
6215             * Keep trailing edge in view.
6216             */
6217
6218            if (dir < 0) {
6219                scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line));
6220            } else {
6221                int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
6222                scrollx = right - hspace;
6223            }
6224        }
6225
6226        if (ht < vspace) {
6227            scrolly = 0;
6228        } else {
6229            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6230                scrolly = ht - vspace;
6231            } else {
6232                scrolly = 0;
6233            }
6234        }
6235
6236        if (scrollx != mScrollX || scrolly != mScrollY) {
6237            scrollTo(scrollx, scrolly);
6238            return true;
6239        } else {
6240            return false;
6241        }
6242    }
6243
6244    /**
6245     * Move the point, specified by the offset, into the view if it is needed.
6246     * This has to be called after layout. Returns true if anything changed.
6247     */
6248    public boolean bringPointIntoView(int offset) {
6249        boolean changed = false;
6250
6251        int line = mLayout.getLineForOffset(offset);
6252
6253        // FIXME: Is it okay to truncate this, or should we round?
6254        final int x = (int)mLayout.getPrimaryHorizontal(offset);
6255        final int top = mLayout.getLineTop(line);
6256        final int bottom = mLayout.getLineTop(line + 1);
6257
6258        int left = (int) FloatMath.floor(mLayout.getLineLeft(line));
6259        int right = (int) FloatMath.ceil(mLayout.getLineRight(line));
6260        int ht = mLayout.getHeight();
6261
6262        int grav;
6263
6264        switch (mLayout.getParagraphAlignment(line)) {
6265            case ALIGN_NORMAL:
6266                grav = 1;
6267                break;
6268
6269            case ALIGN_OPPOSITE:
6270                grav = -1;
6271                break;
6272
6273            default:
6274                grav = 0;
6275        }
6276
6277        grav *= mLayout.getParagraphDirection(line);
6278
6279        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6280        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6281
6282        int hslack = (bottom - top) / 2;
6283        int vslack = hslack;
6284
6285        if (vslack > vspace / 4)
6286            vslack = vspace / 4;
6287        if (hslack > hspace / 4)
6288            hslack = hspace / 4;
6289
6290        int hs = mScrollX;
6291        int vs = mScrollY;
6292
6293        if (top - vs < vslack)
6294            vs = top - vslack;
6295        if (bottom - vs > vspace - vslack)
6296            vs = bottom - (vspace - vslack);
6297        if (ht - vs < vspace)
6298            vs = ht - vspace;
6299        if (0 - vs > 0)
6300            vs = 0;
6301
6302        if (grav != 0) {
6303            if (x - hs < hslack) {
6304                hs = x - hslack;
6305            }
6306            if (x - hs > hspace - hslack) {
6307                hs = x - (hspace - hslack);
6308            }
6309        }
6310
6311        if (grav < 0) {
6312            if (left - hs > 0)
6313                hs = left;
6314            if (right - hs < hspace)
6315                hs = right - hspace;
6316        } else if (grav > 0) {
6317            if (right - hs < hspace)
6318                hs = right - hspace;
6319            if (left - hs > 0)
6320                hs = left;
6321        } else /* grav == 0 */ {
6322            if (right - left <= hspace) {
6323                /*
6324                 * If the entire text fits, center it exactly.
6325                 */
6326                hs = left - (hspace - (right - left)) / 2;
6327            } else if (x > right - hslack) {
6328                /*
6329                 * If we are near the right edge, keep the right edge
6330                 * at the edge of the view.
6331                 */
6332                hs = right - hspace;
6333            } else if (x < left + hslack) {
6334                /*
6335                 * If we are near the left edge, keep the left edge
6336                 * at the edge of the view.
6337                 */
6338                hs = left;
6339            } else if (left > hs) {
6340                /*
6341                 * Is there whitespace visible at the left?  Fix it if so.
6342                 */
6343                hs = left;
6344            } else if (right < hs + hspace) {
6345                /*
6346                 * Is there whitespace visible at the right?  Fix it if so.
6347                 */
6348                hs = right - hspace;
6349            } else {
6350                /*
6351                 * Otherwise, float as needed.
6352                 */
6353                if (x - hs < hslack) {
6354                    hs = x - hslack;
6355                }
6356                if (x - hs > hspace - hslack) {
6357                    hs = x - (hspace - hslack);
6358                }
6359            }
6360        }
6361
6362        if (hs != mScrollX || vs != mScrollY) {
6363            if (mScroller == null) {
6364                scrollTo(hs, vs);
6365            } else {
6366                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
6367                int dx = hs - mScrollX;
6368                int dy = vs - mScrollY;
6369
6370                if (duration > ANIMATED_SCROLL_GAP) {
6371                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
6372                    awakenScrollBars(mScroller.getDuration());
6373                    invalidate();
6374                } else {
6375                    if (!mScroller.isFinished()) {
6376                        mScroller.abortAnimation();
6377                    }
6378
6379                    scrollBy(dx, dy);
6380                }
6381
6382                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
6383            }
6384
6385            changed = true;
6386        }
6387
6388        if (isFocused()) {
6389            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
6390            // requestRectangleOnScreen() is in terms of content coordinates.
6391
6392            if (mTempRect == null) mTempRect = new Rect();
6393            mTempRect.set(x, top, x + 1, bottom);
6394            getInterestingRect(mTempRect, line);
6395            mTempRect.offset(mScrollX, mScrollY);
6396
6397            if (requestRectangleOnScreen(mTempRect)) {
6398                changed = true;
6399            }
6400        }
6401
6402        return changed;
6403    }
6404
6405    /**
6406     * Move the cursor, if needed, so that it is at an offset that is visible
6407     * to the user.  This will not move the cursor if it represents more than
6408     * one character (a selection range).  This will only work if the
6409     * TextView contains spannable text; otherwise it will do nothing.
6410     *
6411     * @return True if the cursor was actually moved, false otherwise.
6412     */
6413    public boolean moveCursorToVisibleOffset() {
6414        if (!(mText instanceof Spannable)) {
6415            return false;
6416        }
6417        int start = getSelectionStart();
6418        int end = getSelectionEnd();
6419        if (start != end) {
6420            return false;
6421        }
6422
6423        // First: make sure the line is visible on screen:
6424
6425        int line = mLayout.getLineForOffset(start);
6426
6427        final int top = mLayout.getLineTop(line);
6428        final int bottom = mLayout.getLineTop(line + 1);
6429        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6430        int vslack = (bottom - top) / 2;
6431        if (vslack > vspace / 4)
6432            vslack = vspace / 4;
6433        final int vs = mScrollY;
6434
6435        if (top < (vs+vslack)) {
6436            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
6437        } else if (bottom > (vspace+vs-vslack)) {
6438            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
6439        }
6440
6441        // Next: make sure the character is visible on screen:
6442
6443        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6444        final int hs = mScrollX;
6445        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
6446        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
6447
6448        // line might contain bidirectional text
6449        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
6450        final int highChar = leftChar > rightChar ? leftChar : rightChar;
6451
6452        int newStart = start;
6453        if (newStart < lowChar) {
6454            newStart = lowChar;
6455        } else if (newStart > highChar) {
6456            newStart = highChar;
6457        }
6458
6459        if (newStart != start) {
6460            Selection.setSelection((Spannable)mText, newStart);
6461            return true;
6462        }
6463
6464        return false;
6465    }
6466
6467    @Override
6468    public void computeScroll() {
6469        if (mScroller != null) {
6470            if (mScroller.computeScrollOffset()) {
6471                mScrollX = mScroller.getCurrX();
6472                mScrollY = mScroller.getCurrY();
6473                invalidateParentCaches();
6474                postInvalidate();  // So we draw again
6475            }
6476        }
6477    }
6478
6479    private void getInterestingRect(Rect r, int line) {
6480        convertFromViewportToContentCoordinates(r);
6481
6482        // Rectangle can can be expanded on first and last line to take
6483        // padding into account.
6484        // TODO Take left/right padding into account too?
6485        if (line == 0) r.top -= getExtendedPaddingTop();
6486        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
6487    }
6488
6489    private void convertFromViewportToContentCoordinates(Rect r) {
6490        final int horizontalOffset = viewportToContentHorizontalOffset();
6491        r.left += horizontalOffset;
6492        r.right += horizontalOffset;
6493
6494        final int verticalOffset = viewportToContentVerticalOffset();
6495        r.top += verticalOffset;
6496        r.bottom += verticalOffset;
6497    }
6498
6499    private int viewportToContentHorizontalOffset() {
6500        return getCompoundPaddingLeft() - mScrollX;
6501    }
6502
6503    private int viewportToContentVerticalOffset() {
6504        int offset = getExtendedPaddingTop() - mScrollY;
6505        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6506            offset += getVerticalOffset(false);
6507        }
6508        return offset;
6509    }
6510
6511    @Override
6512    public void debug(int depth) {
6513        super.debug(depth);
6514
6515        String output = debugIndent(depth);
6516        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
6517                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
6518                + "} ";
6519
6520        if (mText != null) {
6521
6522            output += "mText=\"" + mText + "\" ";
6523            if (mLayout != null) {
6524                output += "mLayout width=" + mLayout.getWidth()
6525                        + " height=" + mLayout.getHeight();
6526            }
6527        } else {
6528            output += "mText=NULL";
6529        }
6530        Log.d(VIEW_LOG_TAG, output);
6531    }
6532
6533    /**
6534     * Convenience for {@link Selection#getSelectionStart}.
6535     */
6536    @ViewDebug.ExportedProperty(category = "text")
6537    public int getSelectionStart() {
6538        return Selection.getSelectionStart(getText());
6539    }
6540
6541    /**
6542     * Convenience for {@link Selection#getSelectionEnd}.
6543     */
6544    @ViewDebug.ExportedProperty(category = "text")
6545    public int getSelectionEnd() {
6546        return Selection.getSelectionEnd(getText());
6547    }
6548
6549    /**
6550     * Return true iff there is a selection inside this text view.
6551     */
6552    public boolean hasSelection() {
6553        final int selectionStart = getSelectionStart();
6554        final int selectionEnd = getSelectionEnd();
6555
6556        return selectionStart >= 0 && selectionStart != selectionEnd;
6557    }
6558
6559    /**
6560     * Sets the properties of this field (lines, horizontally scrolling,
6561     * transformation method) to be for a single-line input.
6562     *
6563     * @attr ref android.R.styleable#TextView_singleLine
6564     */
6565    public void setSingleLine() {
6566        setSingleLine(true);
6567    }
6568
6569    /**
6570     * If true, sets the properties of this field (number of lines, horizontally scrolling,
6571     * transformation method) to be for a single-line input; if false, restores these to the default
6572     * conditions.
6573     *
6574     * Note that the default conditions are not necessarily those that were in effect prior this
6575     * method, and you may want to reset these properties to your custom values.
6576     *
6577     * @attr ref android.R.styleable#TextView_singleLine
6578     */
6579    @android.view.RemotableViewMethod
6580    public void setSingleLine(boolean singleLine) {
6581        // Could be used, but may break backward compatibility.
6582        // if (mSingleLine == singleLine) return;
6583        setInputTypeSingleLine(singleLine);
6584        applySingleLine(singleLine, true, true);
6585    }
6586
6587    /**
6588     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
6589     * @param singleLine
6590     */
6591    private void setInputTypeSingleLine(boolean singleLine) {
6592        if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6593            if (singleLine) {
6594                mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6595            } else {
6596                mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6597            }
6598        }
6599    }
6600
6601    private void applySingleLine(boolean singleLine, boolean applyTransformation,
6602            boolean changeMaxLines) {
6603        mSingleLine = singleLine;
6604        if (singleLine) {
6605            setLines(1);
6606            setHorizontallyScrolling(true);
6607            if (applyTransformation) {
6608                setTransformationMethod(SingleLineTransformationMethod.getInstance());
6609            }
6610        } else {
6611            if (changeMaxLines) {
6612                setMaxLines(Integer.MAX_VALUE);
6613            }
6614            setHorizontallyScrolling(false);
6615            if (applyTransformation) {
6616                setTransformationMethod(null);
6617            }
6618        }
6619    }
6620
6621    /**
6622     * Causes words in the text that are longer than the view is wide
6623     * to be ellipsized instead of broken in the middle.  You may also
6624     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
6625     * to constrain the text to a single line.  Use <code>null</code>
6626     * to turn off ellipsizing.
6627     *
6628     * @attr ref android.R.styleable#TextView_ellipsize
6629     */
6630    public void setEllipsize(TextUtils.TruncateAt where) {
6631        mEllipsize = where;
6632
6633        if (mLayout != null) {
6634            nullLayouts();
6635            requestLayout();
6636            invalidate();
6637        }
6638    }
6639
6640    /**
6641     * Sets how many times to repeat the marquee animation. Only applied if the
6642     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
6643     *
6644     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
6645     */
6646    public void setMarqueeRepeatLimit(int marqueeLimit) {
6647        mMarqueeRepeatLimit = marqueeLimit;
6648    }
6649
6650    /**
6651     * Returns where, if anywhere, words that are longer than the view
6652     * is wide should be ellipsized.
6653     */
6654    @ViewDebug.ExportedProperty
6655    public TextUtils.TruncateAt getEllipsize() {
6656        return mEllipsize;
6657    }
6658
6659    /**
6660     * Set the TextView so that when it takes focus, all the text is
6661     * selected.
6662     *
6663     * @attr ref android.R.styleable#TextView_selectAllOnFocus
6664     */
6665    @android.view.RemotableViewMethod
6666    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
6667        mSelectAllOnFocus = selectAllOnFocus;
6668
6669        if (selectAllOnFocus && !(mText instanceof Spannable)) {
6670            setText(mText, BufferType.SPANNABLE);
6671        }
6672    }
6673
6674    /**
6675     * Set whether the cursor is visible.  The default is true.
6676     *
6677     * @attr ref android.R.styleable#TextView_cursorVisible
6678     */
6679    @android.view.RemotableViewMethod
6680    public void setCursorVisible(boolean visible) {
6681        if (mCursorVisible != visible) {
6682            mCursorVisible = visible;
6683            invalidate();
6684
6685            makeBlink();
6686
6687            // InsertionPointCursorController depends on mCursorVisible
6688            prepareCursorControllers();
6689        }
6690    }
6691
6692    private boolean isCursorVisible() {
6693        return mCursorVisible && isTextEditable();
6694    }
6695
6696    private boolean canMarquee() {
6697        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
6698        return width > 0 && mLayout.getLineWidth(0) > width;
6699    }
6700
6701    private void startMarquee() {
6702        // Do not ellipsize EditText
6703        if (mInput != null) return;
6704
6705        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
6706            return;
6707        }
6708
6709        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
6710                getLineCount() == 1 && canMarquee()) {
6711
6712            if (mMarquee == null) mMarquee = new Marquee(this);
6713            mMarquee.start(mMarqueeRepeatLimit);
6714        }
6715    }
6716
6717    private void stopMarquee() {
6718        if (mMarquee != null && !mMarquee.isStopped()) {
6719            mMarquee.stop();
6720        }
6721    }
6722
6723    private void startStopMarquee(boolean start) {
6724        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6725            if (start) {
6726                startMarquee();
6727            } else {
6728                stopMarquee();
6729            }
6730        }
6731    }
6732
6733    private static final class Marquee extends Handler {
6734        // TODO: Add an option to configure this
6735        private static final float MARQUEE_DELTA_MAX = 0.07f;
6736        private static final int MARQUEE_DELAY = 1200;
6737        private static final int MARQUEE_RESTART_DELAY = 1200;
6738        private static final int MARQUEE_RESOLUTION = 1000 / 30;
6739        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
6740
6741        private static final byte MARQUEE_STOPPED = 0x0;
6742        private static final byte MARQUEE_STARTING = 0x1;
6743        private static final byte MARQUEE_RUNNING = 0x2;
6744
6745        private static final int MESSAGE_START = 0x1;
6746        private static final int MESSAGE_TICK = 0x2;
6747        private static final int MESSAGE_RESTART = 0x3;
6748
6749        private final WeakReference<TextView> mView;
6750
6751        private byte mStatus = MARQUEE_STOPPED;
6752        private final float mScrollUnit;
6753        private float mMaxScroll;
6754        float mMaxFadeScroll;
6755        private float mGhostStart;
6756        private float mGhostOffset;
6757        private float mFadeStop;
6758        private int mRepeatLimit;
6759
6760        float mScroll;
6761
6762        Marquee(TextView v) {
6763            final float density = v.getContext().getResources().getDisplayMetrics().density;
6764            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / MARQUEE_RESOLUTION;
6765            mView = new WeakReference<TextView>(v);
6766        }
6767
6768        @Override
6769        public void handleMessage(Message msg) {
6770            switch (msg.what) {
6771                case MESSAGE_START:
6772                    mStatus = MARQUEE_RUNNING;
6773                    tick();
6774                    break;
6775                case MESSAGE_TICK:
6776                    tick();
6777                    break;
6778                case MESSAGE_RESTART:
6779                    if (mStatus == MARQUEE_RUNNING) {
6780                        if (mRepeatLimit >= 0) {
6781                            mRepeatLimit--;
6782                        }
6783                        start(mRepeatLimit);
6784                    }
6785                    break;
6786            }
6787        }
6788
6789        void tick() {
6790            if (mStatus != MARQUEE_RUNNING) {
6791                return;
6792            }
6793
6794            removeMessages(MESSAGE_TICK);
6795
6796            final TextView textView = mView.get();
6797            if (textView != null && (textView.isFocused() || textView.isSelected())) {
6798                mScroll += mScrollUnit;
6799                if (mScroll > mMaxScroll) {
6800                    mScroll = mMaxScroll;
6801                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
6802                } else {
6803                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
6804                }
6805                textView.invalidate();
6806            }
6807        }
6808
6809        void stop() {
6810            mStatus = MARQUEE_STOPPED;
6811            removeMessages(MESSAGE_START);
6812            removeMessages(MESSAGE_RESTART);
6813            removeMessages(MESSAGE_TICK);
6814            resetScroll();
6815        }
6816
6817        private void resetScroll() {
6818            mScroll = 0.0f;
6819            final TextView textView = mView.get();
6820            if (textView != null) textView.invalidate();
6821        }
6822
6823        void start(int repeatLimit) {
6824            if (repeatLimit == 0) {
6825                stop();
6826                return;
6827            }
6828            mRepeatLimit = repeatLimit;
6829            final TextView textView = mView.get();
6830            if (textView != null && textView.mLayout != null) {
6831                mStatus = MARQUEE_STARTING;
6832                mScroll = 0.0f;
6833                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
6834                        textView.getCompoundPaddingRight();
6835                final float lineWidth = textView.mLayout.getLineWidth(0);
6836                final float gap = textWidth / 3.0f;
6837                mGhostStart = lineWidth - textWidth + gap;
6838                mMaxScroll = mGhostStart + textWidth;
6839                mGhostOffset = lineWidth + gap;
6840                mFadeStop = lineWidth + textWidth / 6.0f;
6841                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
6842
6843                textView.invalidate();
6844                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
6845            }
6846        }
6847
6848        float getGhostOffset() {
6849            return mGhostOffset;
6850        }
6851
6852        boolean shouldDrawLeftFade() {
6853            return mScroll <= mFadeStop;
6854        }
6855
6856        boolean shouldDrawGhost() {
6857            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
6858        }
6859
6860        boolean isRunning() {
6861            return mStatus == MARQUEE_RUNNING;
6862        }
6863
6864        boolean isStopped() {
6865            return mStatus == MARQUEE_STOPPED;
6866        }
6867    }
6868
6869    /**
6870     * This method is called when the text is changed, in case any subclasses
6871     * would like to know.
6872     *
6873     * Within <code>text</code>, the <code>lengthAfter</code> characters
6874     * beginning at <code>start</code> have just replaced old text that had
6875     * length <code>lengthBefore</code>. It is an error to attempt to make
6876     * changes to <code>text</code> from this callback.
6877     *
6878     * @param text The text the TextView is displaying
6879     * @param start The offset of the start of the range of the text that was
6880     * modified
6881     * @param lengthBefore The length of the former text that has been replaced
6882     * @param lengthAfter The length of the replacement modified text
6883     */
6884    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
6885        // intentionally empty
6886    }
6887
6888    /**
6889     * This method is called when the selection has changed, in case any
6890     * subclasses would like to know.
6891     *
6892     * @param selStart The new selection start location.
6893     * @param selEnd The new selection end location.
6894     */
6895    protected void onSelectionChanged(int selStart, int selEnd) {
6896        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
6897    }
6898
6899    /**
6900     * Adds a TextWatcher to the list of those whose methods are called
6901     * whenever this TextView's text changes.
6902     * <p>
6903     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
6904     * not called after {@link #setText} calls.  Now, doing {@link #setText}
6905     * if there are any text changed listeners forces the buffer type to
6906     * Editable if it would not otherwise be and does call this method.
6907     */
6908    public void addTextChangedListener(TextWatcher watcher) {
6909        if (mListeners == null) {
6910            mListeners = new ArrayList<TextWatcher>();
6911        }
6912
6913        mListeners.add(watcher);
6914    }
6915
6916    /**
6917     * Removes the specified TextWatcher from the list of those whose
6918     * methods are called
6919     * whenever this TextView's text changes.
6920     */
6921    public void removeTextChangedListener(TextWatcher watcher) {
6922        if (mListeners != null) {
6923            int i = mListeners.indexOf(watcher);
6924
6925            if (i >= 0) {
6926                mListeners.remove(i);
6927            }
6928        }
6929    }
6930
6931    private void sendBeforeTextChanged(CharSequence text, int start, int before,
6932                                   int after) {
6933        if (mListeners != null) {
6934            final ArrayList<TextWatcher> list = mListeners;
6935            final int count = list.size();
6936            for (int i = 0; i < count; i++) {
6937                list.get(i).beforeTextChanged(text, start, before, after);
6938            }
6939        }
6940    }
6941
6942    /**
6943     * Not private so it can be called from an inner class without going
6944     * through a thunk.
6945     */
6946    void sendOnTextChanged(CharSequence text, int start, int before,
6947                                   int after) {
6948        if (mListeners != null) {
6949            final ArrayList<TextWatcher> list = mListeners;
6950            final int count = list.size();
6951            for (int i = 0; i < count; i++) {
6952                list.get(i).onTextChanged(text, start, before, after);
6953            }
6954        }
6955    }
6956
6957    /**
6958     * Not private so it can be called from an inner class without going
6959     * through a thunk.
6960     */
6961    void sendAfterTextChanged(Editable text) {
6962        if (mListeners != null) {
6963            final ArrayList<TextWatcher> list = mListeners;
6964            final int count = list.size();
6965            for (int i = 0; i < count; i++) {
6966                list.get(i).afterTextChanged(text);
6967            }
6968        }
6969    }
6970
6971    /**
6972     * Not private so it can be called from an inner class without going
6973     * through a thunk.
6974     */
6975    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
6976        final InputMethodState ims = mInputMethodState;
6977        if (ims == null || ims.mBatchEditNesting == 0) {
6978            updateAfterEdit();
6979        }
6980        if (ims != null) {
6981            ims.mContentChanged = true;
6982            if (ims.mChangedStart < 0) {
6983                ims.mChangedStart = start;
6984                ims.mChangedEnd = start+before;
6985            } else {
6986                ims.mChangedStart = Math.min(ims.mChangedStart, start);
6987                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
6988            }
6989            ims.mChangedDelta += after-before;
6990        }
6991
6992        sendOnTextChanged(buffer, start, before, after);
6993        onTextChanged(buffer, start, before, after);
6994
6995        // Hide the controllers if the amount of content changed
6996        if (before != after) {
6997            hideControllers();
6998        }
6999    }
7000
7001    /**
7002     * Not private so it can be called from an inner class without going
7003     * through a thunk.
7004     */
7005    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
7006        // XXX Make the start and end move together if this ends up
7007        // spending too much time invalidating.
7008
7009        boolean selChanged = false;
7010        int newSelStart=-1, newSelEnd=-1;
7011
7012        final InputMethodState ims = mInputMethodState;
7013
7014        if (what == Selection.SELECTION_END) {
7015            mHighlightPathBogus = true;
7016            selChanged = true;
7017            newSelEnd = newStart;
7018
7019            if (!isFocused()) {
7020                mSelectionMoved = true;
7021            }
7022
7023            if (oldStart >= 0 || newStart >= 0) {
7024                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
7025                registerForPreDraw();
7026                makeBlink();
7027            }
7028        }
7029
7030        if (what == Selection.SELECTION_START) {
7031            mHighlightPathBogus = true;
7032            selChanged = true;
7033            newSelStart = newStart;
7034
7035            if (!isFocused()) {
7036                mSelectionMoved = true;
7037            }
7038
7039            if (oldStart >= 0 || newStart >= 0) {
7040                int end = Selection.getSelectionEnd(buf);
7041                invalidateCursor(end, oldStart, newStart);
7042            }
7043        }
7044
7045        if (selChanged) {
7046            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
7047                if (newSelStart < 0) {
7048                    newSelStart = Selection.getSelectionStart(buf);
7049                }
7050                if (newSelEnd < 0) {
7051                    newSelEnd = Selection.getSelectionEnd(buf);
7052                }
7053                onSelectionChanged(newSelStart, newSelEnd);
7054            }
7055        }
7056
7057        if (what instanceof UpdateAppearance ||
7058            what instanceof ParagraphStyle) {
7059            if (ims == null || ims.mBatchEditNesting == 0) {
7060                invalidate();
7061                mHighlightPathBogus = true;
7062                checkForResize();
7063            } else {
7064                ims.mContentChanged = true;
7065            }
7066        }
7067
7068        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
7069            mHighlightPathBogus = true;
7070            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
7071                ims.mSelectionModeChanged = true;
7072            }
7073
7074            if (Selection.getSelectionStart(buf) >= 0) {
7075                if (ims == null || ims.mBatchEditNesting == 0) {
7076                    invalidateCursor();
7077                } else {
7078                    ims.mCursorChanged = true;
7079                }
7080            }
7081        }
7082
7083        if (what instanceof ParcelableSpan) {
7084            // If this is a span that can be sent to a remote process,
7085            // the current extract editor would be interested in it.
7086            if (ims != null && ims.mExtracting != null) {
7087                if (ims.mBatchEditNesting != 0) {
7088                    if (oldStart >= 0) {
7089                        if (ims.mChangedStart > oldStart) {
7090                            ims.mChangedStart = oldStart;
7091                        }
7092                        if (ims.mChangedStart > oldEnd) {
7093                            ims.mChangedStart = oldEnd;
7094                        }
7095                    }
7096                    if (newStart >= 0) {
7097                        if (ims.mChangedStart > newStart) {
7098                            ims.mChangedStart = newStart;
7099                        }
7100                        if (ims.mChangedStart > newEnd) {
7101                            ims.mChangedStart = newEnd;
7102                        }
7103                    }
7104                } else {
7105                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
7106                            + oldStart + "-" + oldEnd + ","
7107                            + newStart + "-" + newEnd + what);
7108                    ims.mContentChanged = true;
7109                }
7110            }
7111        }
7112    }
7113
7114    private class ChangeWatcher
7115    implements TextWatcher, SpanWatcher {
7116
7117        private CharSequence mBeforeText;
7118
7119        public void beforeTextChanged(CharSequence buffer, int start,
7120                                      int before, int after) {
7121            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
7122                    + " before=" + before + " after=" + after + ": " + buffer);
7123
7124            if (AccessibilityManager.getInstance(mContext).isEnabled()
7125                    && !isPasswordInputType(mInputType)
7126                    && !hasPasswordTransformationMethod()) {
7127                mBeforeText = buffer.toString();
7128            }
7129
7130            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
7131        }
7132
7133        public void onTextChanged(CharSequence buffer, int start,
7134                                  int before, int after) {
7135            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
7136                    + " before=" + before + " after=" + after + ": " + buffer);
7137            TextView.this.handleTextChanged(buffer, start, before, after);
7138
7139            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
7140                    (isFocused() || isSelected() &&
7141                    isShown())) {
7142                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
7143                mBeforeText = null;
7144            }
7145        }
7146
7147        public void afterTextChanged(Editable buffer) {
7148            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
7149            TextView.this.sendAfterTextChanged(buffer);
7150
7151            if (MetaKeyKeyListener.getMetaState(buffer,
7152                                 MetaKeyKeyListener.META_SELECTING) != 0) {
7153                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
7154            }
7155        }
7156
7157        public void onSpanChanged(Spannable buf,
7158                                  Object what, int s, int e, int st, int en) {
7159            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
7160                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
7161            TextView.this.spanChange(buf, what, s, st, e, en);
7162        }
7163
7164        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
7165            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
7166                    + " what=" + what + ": " + buf);
7167            TextView.this.spanChange(buf, what, -1, s, -1, e);
7168        }
7169
7170        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
7171            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
7172                    + " what=" + what + ": " + buf);
7173            TextView.this.spanChange(buf, what, s, -1, e, -1);
7174        }
7175    }
7176
7177    /**
7178     * @hide
7179     */
7180    @Override
7181    public void dispatchFinishTemporaryDetach() {
7182        mDispatchTemporaryDetach = true;
7183        super.dispatchFinishTemporaryDetach();
7184        mDispatchTemporaryDetach = false;
7185    }
7186
7187    @Override
7188    public void onStartTemporaryDetach() {
7189        super.onStartTemporaryDetach();
7190        // Only track when onStartTemporaryDetach() is called directly,
7191        // usually because this instance is an editable field in a list
7192        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
7193
7194        // Because of View recycling in ListView, there is no easy way to know when a TextView with
7195        // selection becomes visible again. Until a better solution is found, stop text selection
7196        // mode (if any) as soon as this TextView is recycled.
7197        stopSelectionActionMode();
7198    }
7199
7200    @Override
7201    public void onFinishTemporaryDetach() {
7202        super.onFinishTemporaryDetach();
7203        // Only track when onStartTemporaryDetach() is called directly,
7204        // usually because this instance is an editable field in a list
7205        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
7206    }
7207
7208    @Override
7209    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
7210        if (mTemporaryDetach) {
7211            // If we are temporarily in the detach state, then do nothing.
7212            super.onFocusChanged(focused, direction, previouslyFocusedRect);
7213            return;
7214        }
7215
7216        mShowCursor = SystemClock.uptimeMillis();
7217
7218        ensureEndedBatchEdit();
7219
7220        if (focused) {
7221            int selStart = getSelectionStart();
7222            int selEnd = getSelectionEnd();
7223
7224            // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection
7225            // mode for these, unless there was a specific selection already started.
7226            final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 &&
7227                    selEnd == mText.length();
7228            mCreatedWithASelection = mFrozenWithFocus && hasSelection() && !isFocusHighlighted;
7229
7230            if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) {
7231                // If a tap was used to give focus to that view, move cursor at tap position.
7232                // Has to be done before onTakeFocus, which can be overloaded.
7233                final int lastTapPosition = getLastTapPosition();
7234                if (lastTapPosition >= 0) {
7235                    Selection.setSelection((Spannable) mText, lastTapPosition);
7236                }
7237
7238                if (mMovement != null) {
7239                    mMovement.onTakeFocus(this, (Spannable) mText, direction);
7240                }
7241
7242                // The DecorView does not have focus when the 'Done' ExtractEditText button is
7243                // pressed. Since it is the ViewAncestor's mView, it requests focus before
7244                // ExtractEditText clears focus, which gives focus to the ExtractEditText.
7245                // This special case ensure that we keep current selection in that case.
7246                // It would be better to know why the DecorView does not have focus at that time.
7247                if (((this instanceof ExtractEditText) || mSelectionMoved) &&
7248                        selStart >= 0 && selEnd >= 0) {
7249                    /*
7250                     * Someone intentionally set the selection, so let them
7251                     * do whatever it is that they wanted to do instead of
7252                     * the default on-focus behavior.  We reset the selection
7253                     * here instead of just skipping the onTakeFocus() call
7254                     * because some movement methods do something other than
7255                     * just setting the selection in theirs and we still
7256                     * need to go through that path.
7257                     */
7258                    Selection.setSelection((Spannable) mText, selStart, selEnd);
7259                }
7260
7261                if (mSelectAllOnFocus) {
7262                    selectAll();
7263                }
7264
7265                mTouchFocusSelected = true;
7266            }
7267
7268            mFrozenWithFocus = false;
7269            mSelectionMoved = false;
7270
7271            if (mText instanceof Spannable) {
7272                Spannable sp = (Spannable) mText;
7273                MetaKeyKeyListener.resetMetaState(sp);
7274            }
7275
7276            makeBlink();
7277
7278            if (mError != null) {
7279                showError();
7280            }
7281        } else {
7282            if (mError != null) {
7283                hideError();
7284            }
7285            // Don't leave us in the middle of a batch edit.
7286            onEndBatchEdit();
7287
7288            if (this instanceof ExtractEditText) {
7289                // terminateTextSelectionMode removes selection, which we want to keep when
7290                // ExtractEditText goes out of focus.
7291                final int selStart = getSelectionStart();
7292                final int selEnd = getSelectionEnd();
7293                hideControllers();
7294                Selection.setSelection((Spannable) mText, selStart, selEnd);
7295            } else {
7296                hideControllers();
7297            }
7298
7299            // No need to create the controller
7300            if (mSelectionModifierCursorController != null) {
7301                mSelectionModifierCursorController.resetTouchOffsets();
7302            }
7303        }
7304
7305        startStopMarquee(focused);
7306
7307        if (mTransformation != null) {
7308            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
7309        }
7310
7311        super.onFocusChanged(focused, direction, previouslyFocusedRect);
7312    }
7313
7314    private int getLastTapPosition() {
7315        // No need to create the controller at that point, no last tap position saved
7316        if (mSelectionModifierCursorController != null) {
7317            int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset();
7318            if (lastTapPosition >= 0) {
7319                // Safety check, should not be possible.
7320                if (lastTapPosition > mText.length()) {
7321                    Log.e(LOG_TAG, "Invalid tap focus position (" + lastTapPosition + " vs "
7322                            + mText.length() + ")");
7323                    lastTapPosition = mText.length();
7324                }
7325                return lastTapPosition;
7326            }
7327        }
7328
7329        return -1;
7330    }
7331
7332    @Override
7333    public void onWindowFocusChanged(boolean hasWindowFocus) {
7334        super.onWindowFocusChanged(hasWindowFocus);
7335
7336        if (hasWindowFocus) {
7337            if (mBlink != null) {
7338                mBlink.uncancel();
7339                makeBlink();
7340            }
7341        } else {
7342            if (mBlink != null) {
7343                mBlink.cancel();
7344            }
7345            // Don't leave us in the middle of a batch edit.
7346            onEndBatchEdit();
7347            if (mInputContentType != null) {
7348                mInputContentType.enterDown = false;
7349            }
7350            hideControllers();
7351            removeAllSuggestionSpans();
7352        }
7353
7354        startStopMarquee(hasWindowFocus);
7355    }
7356
7357    private void removeAllSuggestionSpans() {
7358        if (mText instanceof Editable) {
7359            Editable editable = ((Editable) mText);
7360            SuggestionSpan[] spans = editable.getSpans(0, mText.length(), SuggestionSpan.class);
7361            final int length = spans.length;
7362            for (int i = 0; i < length; i++) {
7363                editable.removeSpan(spans[i]);
7364            }
7365        }
7366    }
7367
7368    @Override
7369    protected void onVisibilityChanged(View changedView, int visibility) {
7370        super.onVisibilityChanged(changedView, visibility);
7371        if (visibility != VISIBLE) {
7372            hideControllers();
7373        }
7374    }
7375
7376    /**
7377     * Use {@link BaseInputConnection#removeComposingSpans
7378     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
7379     * state from this text view.
7380     */
7381    public void clearComposingText() {
7382        if (mText instanceof Spannable) {
7383            BaseInputConnection.removeComposingSpans((Spannable)mText);
7384        }
7385    }
7386
7387    @Override
7388    public void setSelected(boolean selected) {
7389        boolean wasSelected = isSelected();
7390
7391        super.setSelected(selected);
7392
7393        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7394            if (selected) {
7395                startMarquee();
7396            } else {
7397                stopMarquee();
7398            }
7399        }
7400    }
7401
7402    @Override
7403    public boolean onTouchEvent(MotionEvent event) {
7404        final int action = event.getActionMasked();
7405
7406        if (hasInsertionController()) {
7407            getInsertionController().onTouchEvent(event);
7408        }
7409        if (hasSelectionController()) {
7410            getSelectionController().onTouchEvent(event);
7411        }
7412
7413        if (action == MotionEvent.ACTION_DOWN) {
7414            mLastDownPositionX = event.getX();
7415            mLastDownPositionY = event.getY();
7416
7417            // Reset this state; it will be re-set if super.onTouchEvent
7418            // causes focus to move to the view.
7419            mTouchFocusSelected = false;
7420            mIgnoreActionUpEvent = false;
7421        }
7422
7423        final boolean superResult = super.onTouchEvent(event);
7424
7425        /*
7426         * Don't handle the release after a long press, because it will
7427         * move the selection away from whatever the menu action was
7428         * trying to affect.
7429         */
7430        if (mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
7431            mDiscardNextActionUp = false;
7432            return superResult;
7433        }
7434
7435        final boolean touchIsFinished = action == MotionEvent.ACTION_UP && !mIgnoreActionUpEvent &&
7436                isFocused();
7437
7438        if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
7439                && mText instanceof Spannable && mLayout != null) {
7440            boolean handled = false;
7441
7442            if (mMovement != null) {
7443                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
7444            }
7445
7446            if (mLinksClickable && mAutoLinkMask != 0 && mTextIsSelectable && touchIsFinished) {
7447                // The LinkMovementMethod which should handle taps on links has not been installed
7448                // to support text selection. We reproduce its behavior here to open links.
7449                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
7450                        getSelectionEnd(), ClickableSpan.class);
7451
7452                if (links.length != 0) {
7453                    links[0].onClick(this);
7454                    handled = true;
7455                }
7456            }
7457
7458            if ((isTextEditable() || mTextIsSelectable) && touchIsFinished) {
7459                // Show the IME, except when selecting in read-only text.
7460                if (!mTextIsSelectable) {
7461                    final InputMethodManager imm = InputMethodManager.peekInstance();
7462                    handled |= imm != null && imm.showSoftInput(this, 0);
7463                }
7464
7465                boolean selectAllGotFocus = mSelectAllOnFocus && didTouchFocusSelect();
7466                if (!selectAllGotFocus && hasSelection()) {
7467                    startSelectionActionMode();
7468                } else {
7469                    stopSelectionActionMode();
7470                    hideSuggestions();
7471                    if (hasInsertionController() && !selectAllGotFocus && mText.length() > 0) {
7472                        getInsertionController().show();
7473                    }
7474                }
7475            }
7476
7477            if (handled) {
7478                return true;
7479            }
7480        }
7481
7482        return superResult;
7483    }
7484
7485    @Override
7486    public boolean onGenericMotionEvent(MotionEvent event) {
7487        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7488            try {
7489                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
7490                    return true;
7491                }
7492            } catch (AbstractMethodError ex) {
7493                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
7494                // Ignore its absence in case third party applications implemented the
7495                // interface directly.
7496            }
7497        }
7498        return super.onGenericMotionEvent(event);
7499    }
7500
7501    private void prepareCursorControllers() {
7502        boolean windowSupportsHandles = false;
7503
7504        ViewGroup.LayoutParams params = getRootView().getLayoutParams();
7505        if (params instanceof WindowManager.LayoutParams) {
7506            WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params;
7507            windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW
7508                    || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW;
7509        }
7510
7511        mInsertionControllerEnabled = windowSupportsHandles && isCursorVisible() && mLayout != null;
7512        mSelectionControllerEnabled = windowSupportsHandles && textCanBeSelected() &&
7513                mLayout != null;
7514
7515        if (!mInsertionControllerEnabled) {
7516            hideInsertionPointCursorController();
7517            if (mInsertionPointCursorController != null) {
7518                mInsertionPointCursorController.onDetached();
7519                mInsertionPointCursorController = null;
7520            }
7521        }
7522
7523        if (!mSelectionControllerEnabled) {
7524            stopSelectionActionMode();
7525            if (mSelectionModifierCursorController != null) {
7526                mSelectionModifierCursorController.onDetached();
7527                mSelectionModifierCursorController = null;
7528            }
7529        }
7530    }
7531
7532    /**
7533     * @return True iff this TextView contains a text that can be edited, or if this is
7534     * a selectable TextView.
7535     */
7536    private boolean isTextEditable() {
7537        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
7538    }
7539
7540    /**
7541     * Returns true, only while processing a touch gesture, if the initial
7542     * touch down event caused focus to move to the text view and as a result
7543     * its selection changed.  Only valid while processing the touch gesture
7544     * of interest.
7545     */
7546    public boolean didTouchFocusSelect() {
7547        return mTouchFocusSelected;
7548    }
7549
7550    @Override
7551    public void cancelLongPress() {
7552        super.cancelLongPress();
7553        mIgnoreActionUpEvent = true;
7554    }
7555
7556    @Override
7557    public boolean onTrackballEvent(MotionEvent event) {
7558        if (mMovement != null && mText instanceof Spannable &&
7559            mLayout != null) {
7560            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
7561                return true;
7562            }
7563        }
7564
7565        return super.onTrackballEvent(event);
7566    }
7567
7568    public void setScroller(Scroller s) {
7569        mScroller = s;
7570    }
7571
7572    private static class Blink extends Handler implements Runnable {
7573        private final WeakReference<TextView> mView;
7574        private boolean mCancelled;
7575
7576        public Blink(TextView v) {
7577            mView = new WeakReference<TextView>(v);
7578        }
7579
7580        public void run() {
7581            if (mCancelled) {
7582                return;
7583            }
7584
7585            removeCallbacks(Blink.this);
7586
7587            TextView tv = mView.get();
7588
7589            if (tv != null && tv.shouldBlink()) {
7590                if (tv.mLayout != null) {
7591                    tv.invalidateCursorPath();
7592                }
7593
7594                postAtTime(this, SystemClock.uptimeMillis() + BLINK);
7595            }
7596        }
7597
7598        void cancel() {
7599            if (!mCancelled) {
7600                removeCallbacks(Blink.this);
7601                mCancelled = true;
7602            }
7603        }
7604
7605        void uncancel() {
7606            mCancelled = false;
7607        }
7608    }
7609
7610    /**
7611     * @return True when the TextView isFocused and has a valid zero-length selection (cursor).
7612     */
7613    private boolean shouldBlink() {
7614        if (!isFocused()) return false;
7615
7616        final int start = getSelectionStart();
7617        if (start < 0) return false;
7618
7619        final int end = getSelectionEnd();
7620        if (end < 0) return false;
7621
7622        return start == end;
7623    }
7624
7625    private void makeBlink() {
7626        if (isCursorVisible()) {
7627            if (shouldBlink()) {
7628                mShowCursor = SystemClock.uptimeMillis();
7629                if (mBlink == null) mBlink = new Blink(this);
7630                mBlink.removeCallbacks(mBlink);
7631                mBlink.postAtTime(mBlink, mShowCursor + BLINK);
7632            }
7633        } else {
7634            if (mBlink != null) mBlink.removeCallbacks(mBlink);
7635        }
7636    }
7637
7638    @Override
7639    protected float getLeftFadingEdgeStrength() {
7640        if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return 0.0f;
7641        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7642            if (mMarquee != null && !mMarquee.isStopped()) {
7643                final Marquee marquee = mMarquee;
7644                if (marquee.shouldDrawLeftFade()) {
7645                    return marquee.mScroll / getHorizontalFadingEdgeLength();
7646                } else {
7647                    return 0.0f;
7648                }
7649            } else if (getLineCount() == 1) {
7650                final int layoutDirection = getResolvedLayoutDirection();
7651                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7652                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7653                    case Gravity.LEFT:
7654                        return 0.0f;
7655                    case Gravity.RIGHT:
7656                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
7657                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
7658                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
7659                    case Gravity.CENTER_HORIZONTAL:
7660                        return 0.0f;
7661                }
7662            }
7663        }
7664        return super.getLeftFadingEdgeStrength();
7665    }
7666
7667    @Override
7668    protected float getRightFadingEdgeStrength() {
7669        if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return 0.0f;
7670        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7671            if (mMarquee != null && !mMarquee.isStopped()) {
7672                final Marquee marquee = mMarquee;
7673                return (marquee.mMaxFadeScroll - marquee.mScroll) / getHorizontalFadingEdgeLength();
7674            } else if (getLineCount() == 1) {
7675                final int layoutDirection = getResolvedLayoutDirection();
7676                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7677                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7678                    case Gravity.LEFT:
7679                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
7680                                getCompoundPaddingRight();
7681                        final float lineWidth = mLayout.getLineWidth(0);
7682                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
7683                    case Gravity.RIGHT:
7684                        return 0.0f;
7685                    case Gravity.CENTER_HORIZONTAL:
7686                    case Gravity.FILL_HORIZONTAL:
7687                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
7688                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
7689                                getHorizontalFadingEdgeLength();
7690                }
7691            }
7692        }
7693        return super.getRightFadingEdgeStrength();
7694    }
7695
7696    @Override
7697    protected int computeHorizontalScrollRange() {
7698        if (mLayout != null) {
7699            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
7700                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
7701        }
7702
7703        return super.computeHorizontalScrollRange();
7704    }
7705
7706    @Override
7707    protected int computeVerticalScrollRange() {
7708        if (mLayout != null)
7709            return mLayout.getHeight();
7710
7711        return super.computeVerticalScrollRange();
7712    }
7713
7714    @Override
7715    protected int computeVerticalScrollExtent() {
7716        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
7717    }
7718
7719    @Override
7720    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched) {
7721        if (TextUtils.isEmpty(searched)) {
7722            return;
7723        }
7724        CharSequence thisText = getText();
7725        if (TextUtils.isEmpty(thisText)) {
7726            return;
7727        }
7728        String searchedLowerCase = searched.toString().toLowerCase();
7729        String thisTextLowerCase = thisText.toString().toLowerCase();
7730        if (thisTextLowerCase.contains(searchedLowerCase)) {
7731            outViews.add(this);
7732        }
7733    }
7734
7735    public enum BufferType {
7736        NORMAL, SPANNABLE, EDITABLE,
7737    }
7738
7739    /**
7740     * Returns the TextView_textColor attribute from the
7741     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
7742     * from the TextView_textAppearance attribute, if TextView_textColor
7743     * was not set directly.
7744     */
7745    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
7746        ColorStateList colors;
7747        colors = attrs.getColorStateList(com.android.internal.R.styleable.
7748                                         TextView_textColor);
7749
7750        if (colors == null) {
7751            int ap = attrs.getResourceId(com.android.internal.R.styleable.
7752                                         TextView_textAppearance, -1);
7753            if (ap != -1) {
7754                TypedArray appearance;
7755                appearance = context.obtainStyledAttributes(ap,
7756                                            com.android.internal.R.styleable.TextAppearance);
7757                colors = appearance.getColorStateList(com.android.internal.R.styleable.
7758                                                  TextAppearance_textColor);
7759                appearance.recycle();
7760            }
7761        }
7762
7763        return colors;
7764    }
7765
7766    /**
7767     * Returns the default color from the TextView_textColor attribute
7768     * from the AttributeSet, if set, or the default color from the
7769     * TextAppearance_textColor from the TextView_textAppearance attribute,
7770     * if TextView_textColor was not set directly.
7771     */
7772    public static int getTextColor(Context context,
7773                                   TypedArray attrs,
7774                                   int def) {
7775        ColorStateList colors = getTextColors(context, attrs);
7776
7777        if (colors == null) {
7778            return def;
7779        } else {
7780            return colors.getDefaultColor();
7781        }
7782    }
7783
7784    @Override
7785    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
7786        final int filteredMetaState = event.getMetaState() & ~KeyEvent.META_CTRL_MASK;
7787        if (KeyEvent.metaStateHasNoModifiers(filteredMetaState)) {
7788            switch (keyCode) {
7789            case KeyEvent.KEYCODE_A:
7790                if (canSelectText()) {
7791                    return onTextContextMenuItem(ID_SELECT_ALL);
7792                }
7793                break;
7794            case KeyEvent.KEYCODE_X:
7795                if (canCut()) {
7796                    return onTextContextMenuItem(ID_CUT);
7797                }
7798                break;
7799            case KeyEvent.KEYCODE_C:
7800                if (canCopy()) {
7801                    return onTextContextMenuItem(ID_COPY);
7802                }
7803                break;
7804            case KeyEvent.KEYCODE_V:
7805                if (canPaste()) {
7806                    return onTextContextMenuItem(ID_PASTE);
7807                }
7808                break;
7809            }
7810        }
7811        return super.onKeyShortcut(keyCode, event);
7812    }
7813
7814    /**
7815     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
7816     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
7817     * a selection controller (see {@link #prepareCursorControllers()}), but this is not sufficient.
7818     */
7819    private boolean canSelectText() {
7820        return hasSelectionController() && mText.length() != 0;
7821    }
7822
7823    /**
7824     * Test based on the <i>intrinsic</i> charateristics of the TextView.
7825     * The text must be spannable and the movement method must allow for arbitary selection.
7826     *
7827     * See also {@link #canSelectText()}.
7828     */
7829    private boolean textCanBeSelected() {
7830        // prepareCursorController() relies on this method.
7831        // If you change this condition, make sure prepareCursorController is called anywhere
7832        // the value of this condition might be changed.
7833        return mText instanceof Spannable && mMovement != null && mMovement.canSelectArbitrarily();
7834    }
7835
7836    private boolean canCut() {
7837        if (hasPasswordTransformationMethod()) {
7838            return false;
7839        }
7840
7841        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mInput != null) {
7842            return true;
7843        }
7844
7845        return false;
7846    }
7847
7848    private boolean canCopy() {
7849        if (hasPasswordTransformationMethod()) {
7850            return false;
7851        }
7852
7853        if (mText.length() > 0 && hasSelection()) {
7854            return true;
7855        }
7856
7857        return false;
7858    }
7859
7860    private boolean canPaste() {
7861        return (mText instanceof Editable &&
7862                mInput != null &&
7863                getSelectionStart() >= 0 &&
7864                getSelectionEnd() >= 0 &&
7865                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
7866                hasPrimaryClip());
7867    }
7868
7869    private static long packRangeInLong(int start, int end) {
7870        return (((long) start) << 32) | end;
7871    }
7872
7873    private static int extractRangeStartFromLong(long range) {
7874        return (int) (range >>> 32);
7875    }
7876
7877    private static int extractRangeEndFromLong(long range) {
7878        return (int) (range & 0x00000000FFFFFFFFL);
7879    }
7880
7881    private boolean selectAll() {
7882        final int length = mText.length();
7883        Selection.setSelection((Spannable) mText, 0, length);
7884        return length > 0;
7885    }
7886
7887    /**
7888     * Adjusts selection to the word under last touch offset.
7889     * Return true if the operation was successfully performed.
7890     */
7891    private boolean selectCurrentWord() {
7892        if (!canSelectText()) {
7893            return false;
7894        }
7895
7896        if (hasPasswordTransformationMethod()) {
7897            // Always select all on a password field.
7898            // Cut/copy menu entries are not available for passwords, but being able to select all
7899            // is however useful to delete or paste to replace the entire content.
7900            return selectAll();
7901        }
7902
7903        int klass = mInputType & InputType.TYPE_MASK_CLASS;
7904        int variation = mInputType & InputType.TYPE_MASK_VARIATION;
7905
7906        // Specific text field types: select the entire text for these
7907        if (klass == InputType.TYPE_CLASS_NUMBER ||
7908                klass == InputType.TYPE_CLASS_PHONE ||
7909                klass == InputType.TYPE_CLASS_DATETIME ||
7910                variation == InputType.TYPE_TEXT_VARIATION_URI ||
7911                variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS ||
7912                variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS ||
7913                variation == InputType.TYPE_TEXT_VARIATION_FILTER) {
7914            return selectAll();
7915        }
7916
7917        long lastTouchOffsets = getLastTouchOffsets();
7918        final int minOffset = extractRangeStartFromLong(lastTouchOffsets);
7919        final int maxOffset = extractRangeEndFromLong(lastTouchOffsets);
7920
7921        int selectionStart, selectionEnd;
7922
7923        // If a URLSpan (web address, email, phone...) is found at that position, select it.
7924        URLSpan[] urlSpans = ((Spanned) mText).getSpans(minOffset, maxOffset, URLSpan.class);
7925        if (urlSpans.length == 1) {
7926            URLSpan url = urlSpans[0];
7927            selectionStart = ((Spanned) mText).getSpanStart(url);
7928            selectionEnd = ((Spanned) mText).getSpanEnd(url);
7929        } else {
7930            if (mWordIterator == null) {
7931                mWordIterator = new WordIterator();
7932            }
7933            // WordIerator handles text changes, this is a no-op if text in unchanged.
7934            mWordIterator.setCharSequence(mText);
7935
7936            selectionStart = mWordIterator.getBeginning(minOffset);
7937            if (selectionStart == BreakIterator.DONE) return false;
7938
7939            selectionEnd = mWordIterator.getEnd(maxOffset);
7940            if (selectionEnd == BreakIterator.DONE) return false;
7941        }
7942
7943        Selection.setSelection((Spannable) mText, selectionStart, selectionEnd);
7944        return true;
7945    }
7946
7947    private long getLastTouchOffsets() {
7948        int minOffset, maxOffset;
7949
7950        if (mContextMenuTriggeredByKey) {
7951            minOffset = getSelectionStart();
7952            maxOffset = getSelectionEnd();
7953        } else {
7954            SelectionModifierCursorController selectionController = getSelectionController();
7955            minOffset = selectionController.getMinTouchOffset();
7956            maxOffset = selectionController.getMaxTouchOffset();
7957        }
7958
7959        return packRangeInLong(minOffset, maxOffset);
7960    }
7961
7962    @Override
7963    public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
7964        super.onPopulateAccessibilityEvent(event);
7965
7966        final boolean isPassword = hasPasswordTransformationMethod();
7967        if (!isPassword) {
7968            CharSequence text = getText();
7969            if (TextUtils.isEmpty(text)) {
7970                text = getHint();
7971            }
7972            if (!TextUtils.isEmpty(text)) {
7973                event.getText().add(text);
7974            }
7975        }
7976    }
7977
7978    @Override
7979    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
7980        super.onInitializeAccessibilityEvent(event);
7981
7982        final boolean isPassword = hasPasswordTransformationMethod();
7983        event.setPassword(isPassword);
7984
7985        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
7986            event.setFromIndex(Selection.getSelectionStart(mText));
7987            event.setToIndex(Selection.getSelectionEnd(mText));
7988            event.setItemCount(mText.length());
7989        }
7990    }
7991
7992    @Override
7993    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
7994        super.onInitializeAccessibilityNodeInfo(info);
7995
7996        final boolean isPassword = hasPasswordTransformationMethod();
7997        if (!isPassword) {
7998            info.setText(getText());
7999        }
8000        info.setPassword(isPassword);
8001    }
8002
8003    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
8004            int fromIndex, int removedCount, int addedCount) {
8005        AccessibilityEvent event =
8006            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
8007        event.setFromIndex(fromIndex);
8008        event.setRemovedCount(removedCount);
8009        event.setAddedCount(addedCount);
8010        event.setBeforeText(beforeText);
8011        sendAccessibilityEventUnchecked(event);
8012    }
8013
8014    @Override
8015    protected void onCreateContextMenu(ContextMenu menu) {
8016        super.onCreateContextMenu(menu);
8017        boolean added = false;
8018        mContextMenuTriggeredByKey = mDPadCenterIsDown || mEnterKeyIsDown;
8019        // Problem with context menu on long press: the menu appears while the key in down and when
8020        // the key is released, the view does not receive the key_up event.
8021        // We need two layers of flags: mDPadCenterIsDown and mEnterKeyIsDown are set in key down/up
8022        // events. We cannot simply clear these flags in onTextContextMenuItem since
8023        // it may not be called (if the user/ discards the context menu with the back key).
8024        // We clear these flags here and mContextMenuTriggeredByKey saves that state so that it is
8025        // available in onTextContextMenuItem.
8026        mDPadCenterIsDown = mEnterKeyIsDown = false;
8027
8028        MenuHandler handler = new MenuHandler();
8029
8030        if (mText instanceof Spanned && hasSelectionController()) {
8031            long lastTouchOffset = getLastTouchOffsets();
8032            final int selStart = extractRangeStartFromLong(lastTouchOffset);
8033            final int selEnd = extractRangeEndFromLong(lastTouchOffset);
8034
8035            URLSpan[] urls = ((Spanned) mText).getSpans(selStart, selEnd, URLSpan.class);
8036            if (urls.length > 0) {
8037                menu.add(0, ID_COPY_URL, 0, com.android.internal.R.string.copyUrl).
8038                        setOnMenuItemClickListener(handler);
8039
8040                added = true;
8041            }
8042        }
8043
8044        // The context menu is not empty, which will prevent the selection mode from starting.
8045        // Add a entry to start it in the context menu.
8046        // TODO Does not handle the case where a subclass does not call super.thisMethod or
8047        // populates the menu AFTER this call.
8048        if (menu.size() > 0) {
8049            menu.add(0, ID_SELECTION_MODE, 0, com.android.internal.R.string.selectTextMode).
8050                    setOnMenuItemClickListener(handler);
8051            added = true;
8052        }
8053
8054        if (added) {
8055            menu.setHeaderTitle(com.android.internal.R.string.editTextMenuTitle);
8056        }
8057    }
8058
8059    /**
8060     * Returns whether this text view is a current input method target.  The
8061     * default implementation just checks with {@link InputMethodManager}.
8062     */
8063    public boolean isInputMethodTarget() {
8064        InputMethodManager imm = InputMethodManager.peekInstance();
8065        return imm != null && imm.isActive(this);
8066    }
8067
8068    // Selection context mode
8069    private static final int ID_SELECT_ALL = android.R.id.selectAll;
8070    private static final int ID_CUT = android.R.id.cut;
8071    private static final int ID_COPY = android.R.id.copy;
8072    private static final int ID_PASTE = android.R.id.paste;
8073    // Context menu entries
8074    private static final int ID_COPY_URL = android.R.id.copyUrl;
8075    private static final int ID_SELECTION_MODE = android.R.id.selectTextMode;
8076
8077    private class MenuHandler implements MenuItem.OnMenuItemClickListener {
8078        public boolean onMenuItemClick(MenuItem item) {
8079            return onTextContextMenuItem(item.getItemId());
8080        }
8081    }
8082
8083    /**
8084     * Called when a context menu option for the text view is selected.  Currently
8085     * this will be {@link android.R.id#copyUrl}, {@link android.R.id#selectTextMode},
8086     * {@link android.R.id#selectAll}, {@link android.R.id#paste}, {@link android.R.id#cut}
8087     * or {@link android.R.id#copy}.
8088     *
8089     * @return true if the context menu item action was performed.
8090     */
8091    public boolean onTextContextMenuItem(int id) {
8092        int min = 0;
8093        int max = mText.length();
8094
8095        if (isFocused()) {
8096            final int selStart = getSelectionStart();
8097            final int selEnd = getSelectionEnd();
8098
8099            min = Math.max(0, Math.min(selStart, selEnd));
8100            max = Math.max(0, Math.max(selStart, selEnd));
8101        }
8102
8103        switch (id) {
8104            case ID_COPY_URL:
8105                URLSpan[] urls = ((Spanned) mText).getSpans(min, max, URLSpan.class);
8106                if (urls.length >= 1) {
8107                    ClipData clip = null;
8108                    for (int i=0; i<urls.length; i++) {
8109                        Uri uri = Uri.parse(urls[0].getURL());
8110                        if (clip == null) {
8111                            clip = ClipData.newRawUri(null, uri);
8112                        } else {
8113                            clip.addItem(new ClipData.Item(uri));
8114                        }
8115                    }
8116                    if (clip != null) {
8117                        setPrimaryClip(clip);
8118                    }
8119                }
8120                stopSelectionActionMode();
8121                return true;
8122
8123            case ID_SELECTION_MODE:
8124                if (mSelectionActionMode != null) {
8125                    // Selection mode is already started, simply change selected part.
8126                    selectCurrentWord();
8127                } else {
8128                    startSelectionActionMode();
8129                }
8130                return true;
8131
8132            case ID_SELECT_ALL:
8133                // This does not enter text selection mode. Text is highlighted, so that it can be
8134                // bulk edited, like selectAllOnFocus does. Returns true even if text is empty.
8135                selectAll();
8136                return true;
8137
8138            case ID_PASTE:
8139                paste(min, max);
8140                return true;
8141
8142            case ID_CUT:
8143                setPrimaryClip(ClipData.newPlainText(null, mTransformed.subSequence(min, max)));
8144                ((Editable) mText).delete(min, max);
8145                stopSelectionActionMode();
8146                return true;
8147
8148            case ID_COPY:
8149                setPrimaryClip(ClipData.newPlainText(null, mTransformed.subSequence(min, max)));
8150                stopSelectionActionMode();
8151                return true;
8152        }
8153        return false;
8154    }
8155
8156    /**
8157     * Prepare text so that there are not zero or two spaces at beginning and end of region defined
8158     * by [min, max] when replacing this region by paste.
8159     * Note that if there were two spaces (or more) at that position before, they are kept. We just
8160     * make sure we do not add an extra one from the paste content.
8161     */
8162    private long prepareSpacesAroundPaste(int min, int max, CharSequence paste) {
8163        if (paste.length() > 0) {
8164            if (min > 0) {
8165                final char charBefore = mTransformed.charAt(min - 1);
8166                final char charAfter = paste.charAt(0);
8167
8168                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8169                    // Two spaces at beginning of paste: remove one
8170                    final int originalLength = mText.length();
8171                    ((Editable) mText).delete(min - 1, min);
8172                    // Due to filters, there is no guarantee that exactly one character was
8173                    // removed: count instead.
8174                    final int delta = mText.length() - originalLength;
8175                    min += delta;
8176                    max += delta;
8177                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8178                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8179                    // No space at beginning of paste: add one
8180                    final int originalLength = mText.length();
8181                    ((Editable) mText).replace(min, min, " ");
8182                    // Taking possible filters into account as above.
8183                    final int delta = mText.length() - originalLength;
8184                    min += delta;
8185                    max += delta;
8186                }
8187            }
8188
8189            if (max < mText.length()) {
8190                final char charBefore = paste.charAt(paste.length() - 1);
8191                final char charAfter = mTransformed.charAt(max);
8192
8193                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8194                    // Two spaces at end of paste: remove one
8195                    ((Editable) mText).delete(max, max + 1);
8196                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8197                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8198                    // No space at end of paste: add one
8199                    ((Editable) mText).replace(max, max, " ");
8200                }
8201            }
8202        }
8203
8204        return packRangeInLong(min, max);
8205    }
8206
8207    private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) {
8208        TextView shadowView = (TextView) inflate(mContext,
8209                com.android.internal.R.layout.text_drag_thumbnail, null);
8210
8211        if (shadowView == null) {
8212            throw new IllegalArgumentException("Unable to inflate text drag thumbnail");
8213        }
8214
8215        if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) {
8216            text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH);
8217        }
8218        shadowView.setText(text);
8219        shadowView.setTextColor(getTextColors());
8220
8221        shadowView.setTextAppearance(mContext, R.styleable.Theme_textAppearanceLarge);
8222        shadowView.setGravity(Gravity.CENTER);
8223
8224        shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
8225                ViewGroup.LayoutParams.WRAP_CONTENT));
8226
8227        final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
8228        shadowView.measure(size, size);
8229
8230        shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight());
8231        shadowView.invalidate();
8232        return new DragShadowBuilder(shadowView);
8233    }
8234
8235    private static class DragLocalState {
8236        public TextView sourceTextView;
8237        public int start, end;
8238
8239        public DragLocalState(TextView sourceTextView, int start, int end) {
8240            this.sourceTextView = sourceTextView;
8241            this.start = start;
8242            this.end = end;
8243        }
8244    }
8245
8246    @Override
8247    public boolean performLongClick() {
8248        if (super.performLongClick()) {
8249            mDiscardNextActionUp = true;
8250            return true;
8251        }
8252
8253        boolean handled = false;
8254
8255        // Long press in empty space moves cursor and shows the Paste affordance if available.
8256        if (!isPositionOnText(mLastDownPositionX, mLastDownPositionY) &&
8257                mInsertionControllerEnabled) {
8258            final int offset = getOffsetForPosition(mLastDownPositionX, mLastDownPositionY);
8259            stopSelectionActionMode();
8260            Selection.setSelection((Spannable) mText, offset);
8261            getInsertionController().showWithPaste();
8262            handled = true;
8263        }
8264
8265        if (!handled && mSelectionActionMode != null) {
8266            if (touchPositionIsInSelection()) {
8267                // Start a drag
8268                final int start = getSelectionStart();
8269                final int end = getSelectionEnd();
8270                CharSequence selectedText = mTransformed.subSequence(start, end);
8271                ClipData data = ClipData.newPlainText(null, selectedText);
8272                DragLocalState localState = new DragLocalState(this, start, end);
8273                startDrag(data, getTextThumbnailBuilder(selectedText), localState, 0);
8274                stopSelectionActionMode();
8275            } else {
8276                selectCurrentWord();
8277            }
8278            handled = true;
8279        }
8280
8281        // Start a new selection
8282        handled |= !handled && startSelectionActionMode();
8283
8284        if (handled) {
8285            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
8286            mDiscardNextActionUp = true;
8287        }
8288
8289        return handled;
8290    }
8291
8292    private boolean touchPositionIsInSelection() {
8293        int selectionStart = getSelectionStart();
8294        int selectionEnd = getSelectionEnd();
8295
8296        if (selectionStart == selectionEnd) {
8297            return false;
8298        }
8299
8300        if (selectionStart > selectionEnd) {
8301            int tmp = selectionStart;
8302            selectionStart = selectionEnd;
8303            selectionEnd = tmp;
8304            Selection.setSelection((Spannable) mText, selectionStart, selectionEnd);
8305        }
8306
8307        SelectionModifierCursorController selectionController = getSelectionController();
8308        int minOffset = selectionController.getMinTouchOffset();
8309        int maxOffset = selectionController.getMaxTouchOffset();
8310
8311        return ((minOffset >= selectionStart) && (maxOffset < selectionEnd));
8312    }
8313
8314    private static class SuggestionRangeSpan extends UnderlineSpan {
8315        // TODO themable, would be nice to make it a child class of TextAppearanceSpan, but
8316        // there is no way to have underline and TextAppearanceSpan.
8317    }
8318
8319    private class SuggestionsPopupWindow implements OnClickListener {
8320        private static final int MAX_NUMBER_SUGGESTIONS = 5;
8321        private static final int NO_SUGGESTIONS = -1;
8322        private final PopupWindow mContainer;
8323        private final ViewGroup[] mSuggestionViews = new ViewGroup[2];
8324        private final int[] mSuggestionViewLayouts = new int[] {
8325                mTextEditSuggestionsBottomWindowLayout, mTextEditSuggestionsTopWindowLayout};
8326        private WordIterator mSuggestionWordIterator;
8327        private TextAppearanceSpan[] mHighlightSpans = new TextAppearanceSpan[0];
8328
8329        public SuggestionsPopupWindow() {
8330            mContainer = new PopupWindow(TextView.this.mContext, null,
8331                    com.android.internal.R.attr.textSuggestionsWindowStyle);
8332            mContainer.setSplitTouchEnabled(true);
8333            mContainer.setClippingEnabled(false);
8334            mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL);
8335
8336            mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
8337            mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
8338        }
8339
8340        private class SuggestionInfo {
8341            int suggestionStart, suggestionEnd; // range of suggestion item with replacement text
8342            int spanStart, spanEnd; // range in TextView where text should be inserted
8343            SuggestionSpan suggestionSpan; // the SuggestionSpan that this TextView represents
8344            int suggestionIndex; // the index of the suggestion inside suggestionSpan
8345        }
8346
8347        private ViewGroup getViewGroup(boolean under) {
8348            final int viewIndex = under ? 0 : 1;
8349            ViewGroup viewGroup = mSuggestionViews[viewIndex];
8350
8351            if (viewGroup == null) {
8352                final int layout = mSuggestionViewLayouts[viewIndex];
8353                LayoutInflater inflater = (LayoutInflater) TextView.this.mContext.
8354                        getSystemService(Context.LAYOUT_INFLATER_SERVICE);
8355
8356                if (inflater == null) {
8357                    throw new IllegalArgumentException(
8358                            "Unable to create TextEdit suggestion window inflater");
8359                }
8360
8361                View view = inflater.inflate(layout, null);
8362
8363                if (! (view instanceof ViewGroup)) {
8364                    throw new IllegalArgumentException(
8365                            "Inflated TextEdit suggestion window is not a ViewGroup: " + view);
8366                }
8367
8368                viewGroup = (ViewGroup) view;
8369
8370                // Inflate the suggestion items once and for all.
8371                for (int i = 0; i < MAX_NUMBER_SUGGESTIONS; i++) {
8372                    View childView = inflater.inflate(mTextEditSuggestionItemLayout, viewGroup,
8373                            false);
8374
8375                    if (! (childView instanceof TextView)) {
8376                        throw new IllegalArgumentException(
8377                               "Inflated TextEdit suggestion item is not a TextView: " + childView);
8378                    }
8379
8380                    childView.setTag(new SuggestionInfo());
8381                    viewGroup.addView(childView);
8382                    childView.setOnClickListener(this);
8383                }
8384
8385                mSuggestionViews[viewIndex] = viewGroup;
8386            }
8387
8388            return viewGroup;
8389        }
8390
8391        public void show() {
8392            if (!(mText instanceof Editable)) return;
8393
8394            final int pos = TextView.this.getSelectionStart();
8395            Spannable spannable = (Spannable)TextView.this.mText;
8396            SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class);
8397            final int nbSpans = suggestionSpans.length;
8398
8399            ViewGroup viewGroup = getViewGroup(true);
8400            mContainer.setContentView(viewGroup);
8401
8402            int totalNbSuggestions = 0;
8403            int spanUnionStart = mText.length();
8404            int spanUnionEnd = 0;
8405
8406            for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) {
8407                SuggestionSpan suggestionSpan = suggestionSpans[spanIndex];
8408                final int spanStart = spannable.getSpanStart(suggestionSpan);
8409                final int spanEnd = spannable.getSpanEnd(suggestionSpan);
8410                spanUnionStart = Math.min(spanStart, spanUnionStart);
8411                spanUnionEnd = Math.max(spanEnd, spanUnionEnd);
8412
8413                String[] suggestions = suggestionSpan.getSuggestions();
8414                int nbSuggestions = suggestions.length;
8415                for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) {
8416                    TextView textView = (TextView) viewGroup.getChildAt(totalNbSuggestions);
8417                    textView.setText(suggestions[suggestionIndex]);
8418                    SuggestionInfo suggestionInfo = (SuggestionInfo) textView.getTag();
8419                    suggestionInfo.spanStart = spanStart;
8420                    suggestionInfo.spanEnd = spanEnd;
8421                    suggestionInfo.suggestionSpan = suggestionSpan;
8422                    suggestionInfo.suggestionIndex = suggestionIndex;
8423
8424                    totalNbSuggestions++;
8425                    if (totalNbSuggestions == MAX_NUMBER_SUGGESTIONS) {
8426                        // Also end outer for loop
8427                        spanIndex = nbSpans;
8428                        break;
8429                    }
8430                }
8431            }
8432
8433            if (totalNbSuggestions == 0) {
8434                // TODO Replace by final text, use a dedicated layout, add a fade out timer...
8435                TextView textView = (TextView) viewGroup.getChildAt(0);
8436                textView.setText("No suggestions available");
8437                SuggestionInfo suggestionInfo = (SuggestionInfo) textView.getTag();
8438                suggestionInfo.spanStart = NO_SUGGESTIONS;
8439                totalNbSuggestions++;
8440            } else {
8441                if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan();
8442                ((Editable) mText).setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd,
8443                        Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
8444
8445                for (int i = 0; i < totalNbSuggestions; i++) {
8446                    final TextView textView = (TextView) viewGroup.getChildAt(i);
8447                    highlightTextDifferences(textView, spanUnionStart, spanUnionEnd);
8448                }
8449            }
8450
8451            for (int i = 0; i < MAX_NUMBER_SUGGESTIONS; i++) {
8452                viewGroup.getChildAt(i).setVisibility(i < totalNbSuggestions ? VISIBLE : GONE);
8453            }
8454
8455            final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
8456            viewGroup.measure(size, size);
8457
8458            positionAtCursor();
8459        }
8460
8461        private long[] getWordLimits(CharSequence text) {
8462            // TODO locale for mSuggestionWordIterator
8463            if (mSuggestionWordIterator == null) mSuggestionWordIterator = new WordIterator();
8464            mSuggestionWordIterator.setCharSequence(text);
8465
8466            // First pass will simply count the number of words to be able to create an array
8467            // Not too expensive since previous break positions are cached by the BreakIterator
8468            int nbWords = 0;
8469            int position = mSuggestionWordIterator.following(0);
8470            while (position != BreakIterator.DONE) {
8471                nbWords++;
8472                position = mSuggestionWordIterator.following(position);
8473            }
8474
8475            int index = 0;
8476            long[] result = new long[nbWords];
8477
8478            position = mSuggestionWordIterator.following(0);
8479            while (position != BreakIterator.DONE) {
8480                int wordStart = mSuggestionWordIterator.getBeginning(position);
8481                result[index++] = packRangeInLong(wordStart, position);
8482                position = mSuggestionWordIterator.following(position);
8483            }
8484
8485            return result;
8486        }
8487
8488        private TextAppearanceSpan highlightSpan(int index) {
8489            final int length = mHighlightSpans.length;
8490            if (index < length) {
8491                return mHighlightSpans[index];
8492            }
8493
8494            // Assumes indexes are requested in sequence: simply append one more item
8495            TextAppearanceSpan[] newArray = new TextAppearanceSpan[length + 1];
8496            System.arraycopy(mHighlightSpans, 0, newArray, 0, length);
8497            TextAppearanceSpan highlightSpan = new TextAppearanceSpan(mContext,
8498                    android.R.style.TextAppearance_SuggestionHighlight);
8499            newArray[length] = highlightSpan;
8500            mHighlightSpans = newArray;
8501            return highlightSpan;
8502        }
8503
8504        private void highlightTextDifferences(TextView textView, int unionStart, int unionEnd) {
8505            SuggestionInfo suggestionInfo = (SuggestionInfo) textView.getTag();
8506            final int spanStart = suggestionInfo.spanStart;
8507            final int spanEnd = suggestionInfo.spanEnd;
8508
8509            // Remove all text formating by converting to Strings
8510            final String text = textView.getText().toString();
8511            final String sourceText = mText.subSequence(spanStart, spanEnd).toString();
8512
8513            long[] sourceWordLimits = getWordLimits(sourceText);
8514            long[] wordLimits = getWordLimits(text);
8515
8516            SpannableStringBuilder ssb = new SpannableStringBuilder();
8517            // span [spanStart, spanEnd] is included in union [spanUnionStart, int spanUnionEnd]
8518            // The final result is made of 3 parts: the text before, between and after the span
8519            // This is the text before, provided for context
8520            ssb.append(mText.subSequence(unionStart, spanStart).toString());
8521
8522            // shift is used to offset spans positions wrt span's beginning
8523            final int shift = spanStart - unionStart;
8524            suggestionInfo.suggestionStart = shift;
8525            suggestionInfo.suggestionEnd = shift + text.length();
8526
8527            // This is the actual suggestion text, which will be highlighted by the following code
8528            ssb.append(text);
8529
8530            String[] words = new String[wordLimits.length];
8531            for (int i = 0; i < wordLimits.length; i++) {
8532                int wordStart = extractRangeStartFromLong(wordLimits[i]);
8533                int wordEnd = extractRangeEndFromLong(wordLimits[i]);
8534                words[i] = text.substring(wordStart, wordEnd);
8535            }
8536
8537            // Highlighted word algorithm is based on word matching between source and text
8538            // Matching words are found from left to right. TODO: change for RTL languages
8539            // Characters between matching words are highlighted
8540            int previousCommonWordIndex = -1;
8541            int nbHighlightSpans = 0;
8542            for (int i = 0; i < sourceWordLimits.length; i++) {
8543                int wordStart = extractRangeStartFromLong(sourceWordLimits[i]);
8544                int wordEnd = extractRangeEndFromLong(sourceWordLimits[i]);
8545                String sourceWord = sourceText.substring(wordStart, wordEnd);
8546
8547                for (int j = previousCommonWordIndex + 1; j < words.length; j++) {
8548                    if (sourceWord.equals(words[j])) {
8549                        if (j != previousCommonWordIndex + 1) {
8550                            int firstDifferentPosition = previousCommonWordIndex < 0 ? 0 :
8551                                extractRangeEndFromLong(wordLimits[previousCommonWordIndex]);
8552                            int lastDifferentPosition = extractRangeStartFromLong(wordLimits[j]);
8553                            ssb.setSpan(highlightSpan(nbHighlightSpans++),
8554                                    shift + firstDifferentPosition, shift + lastDifferentPosition,
8555                                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
8556                        } else {
8557                            // Compare characters between words
8558                            int previousSourceWordEnd = i == 0 ? 0 :
8559                                extractRangeEndFromLong(sourceWordLimits[i - 1]);
8560                            int sourceWordStart = extractRangeStartFromLong(sourceWordLimits[i]);
8561                            String sourceSpaces = sourceText.substring(previousSourceWordEnd,
8562                                    sourceWordStart);
8563
8564                            int previousWordEnd = j == 0 ? 0 :
8565                                extractRangeEndFromLong(wordLimits[j - 1]);
8566                            int currentWordStart = extractRangeStartFromLong(wordLimits[j]);
8567                            String textSpaces = text.substring(previousWordEnd, currentWordStart);
8568
8569                            if (!sourceSpaces.equals(textSpaces)) {
8570                                ssb.setSpan(highlightSpan(nbHighlightSpans++),
8571                                        shift + previousWordEnd, shift + currentWordStart,
8572                                        Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
8573                            }
8574                        }
8575                        previousCommonWordIndex = j;
8576                        break;
8577                    }
8578                }
8579            }
8580
8581            // Finally, compare ends of Strings
8582            if (previousCommonWordIndex < words.length - 1) {
8583                int firstDifferentPosition = previousCommonWordIndex < 0 ? 0 :
8584                    extractRangeEndFromLong(wordLimits[previousCommonWordIndex]);
8585                int lastDifferentPosition = textView.length();
8586                ssb.setSpan(highlightSpan(nbHighlightSpans++),
8587                        shift + firstDifferentPosition, shift + lastDifferentPosition,
8588                        Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
8589            } else {
8590                int lastSourceWordEnd = sourceWordLimits.length == 0 ? 0 :
8591                    extractRangeEndFromLong(sourceWordLimits[sourceWordLimits.length - 1]);
8592                String sourceSpaces = sourceText.substring(lastSourceWordEnd, sourceText.length());
8593
8594                int lastCommonTextWordEnd = previousCommonWordIndex < 0 ? 0 :
8595                    extractRangeEndFromLong(wordLimits[previousCommonWordIndex]);
8596                String textSpaces = text.substring(lastCommonTextWordEnd, textView.length());
8597
8598                if (!sourceSpaces.equals(textSpaces) && textSpaces.length() > 0) {
8599                    ssb.setSpan(highlightSpan(nbHighlightSpans++),
8600                            shift + lastCommonTextWordEnd, shift + textView.length(),
8601                            Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
8602                }
8603            }
8604
8605            // Final part, text after the current suggestion range.
8606            ssb.append(mText.subSequence(spanEnd, unionEnd).toString());
8607            textView.setText(ssb);
8608        }
8609
8610        public void hide() {
8611            if ((mText instanceof Editable) && mSuggestionRangeSpan != null) {
8612                ((Editable) mText).removeSpan(mSuggestionRangeSpan);
8613            }
8614            mContainer.dismiss();
8615        }
8616
8617        @Override
8618        public void onClick(View view) {
8619            if (view instanceof TextView) {
8620                TextView textView = (TextView) view;
8621                SuggestionInfo suggestionInfo = (SuggestionInfo) textView.getTag();
8622                final int spanStart = suggestionInfo.spanStart;
8623                final int spanEnd = suggestionInfo.spanEnd;
8624                if (spanStart != NO_SUGGESTIONS) {
8625                    // SuggestionSpans are removed by replace: save them before
8626                    Editable editable = ((Editable) mText);
8627                    SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd,
8628                            SuggestionSpan.class);
8629                    final int length = suggestionSpans.length;
8630                    int[] suggestionSpansStarts = new int[length];
8631                    int[] suggestionSpansEnds = new int[length];
8632                    int[] suggestionSpansFlags = new int[length];
8633                    for (int i = 0; i < length; i++) {
8634                        final SuggestionSpan suggestionSpan = suggestionSpans[i];
8635                        suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan);
8636                        suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan);
8637                        suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan);
8638                    }
8639
8640                    final int suggestionStart = suggestionInfo.suggestionStart;
8641                    final int suggestionEnd = suggestionInfo.suggestionEnd;
8642                    final String suggestion = textView.getText().subSequence(
8643                            suggestionStart, suggestionEnd).toString();
8644                    final String originalText = mText.subSequence(spanStart, spanEnd).toString();
8645                    ((Editable) mText).replace(spanStart, spanEnd, suggestion);
8646
8647                    // Notify source IME of the suggestion pick. Do this before swaping texts.
8648                    if (!TextUtils.isEmpty(
8649                            suggestionInfo.suggestionSpan.getNotificationTargetClassName())) {
8650                        InputMethodManager imm = InputMethodManager.peekInstance();
8651                        imm.notifySuggestionPicked(suggestionInfo.suggestionSpan, originalText,
8652                                suggestionInfo.suggestionIndex);
8653                    }
8654
8655                    // Swap text content between actual text and Suggestion span
8656                    String[] suggestions = suggestionInfo.suggestionSpan.getSuggestions();
8657                    suggestions[suggestionInfo.suggestionIndex] = originalText;
8658
8659                    // Restore previous SuggestionSpans
8660                    final int lengthDifference = suggestion.length() - (spanEnd - spanStart);
8661                    for (int i = 0; i < length; i++) {
8662                        // Only spans that include the modified region make sense after replacement
8663                        // Spans partially included in the replaced region are removed, there is no
8664                        // way to assign them a valid range after replacement
8665                        if (suggestionSpansStarts[i] <= spanStart &&
8666                                suggestionSpansEnds[i] >= spanEnd) {
8667                            editable.setSpan(suggestionSpans[i], suggestionSpansStarts[i],
8668                                    suggestionSpansEnds[i] + lengthDifference,
8669                                    suggestionSpansFlags[i]);
8670                        }
8671                    }
8672                }
8673            }
8674            hide();
8675        }
8676
8677        void positionAtCursor() {
8678            View contentView = mContainer.getContentView();
8679            int width = contentView.getMeasuredWidth();
8680            int height = contentView.getMeasuredHeight();
8681            final int offset = TextView.this.getSelectionStart();
8682            final int line = mLayout.getLineForOffset(offset);
8683            final int lineBottom = mLayout.getLineBottom(line);
8684            float primaryHorizontal = mLayout.getPrimaryHorizontal(offset);
8685
8686            final Rect bounds = sCursorControllerTempRect;
8687            bounds.left = (int) (primaryHorizontal - width / 2.0f);
8688            bounds.top = lineBottom;
8689
8690            bounds.right = bounds.left + width;
8691            bounds.bottom = bounds.top + height;
8692
8693            convertFromViewportToContentCoordinates(bounds);
8694
8695            final int[] coords = mTempCoords;
8696            TextView.this.getLocationInWindow(coords);
8697            coords[0] += bounds.left;
8698            coords[1] += bounds.top;
8699
8700            final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
8701            final int screenHeight = displayMetrics.heightPixels;
8702
8703            // Vertical clipping
8704            if (coords[1] + height > screenHeight) {
8705                // Try to position above current line instead
8706                // TODO use top layout instead, reverse suggestion order,
8707                // try full screen vertical down if it still does not fit. TBD with designers.
8708
8709                // Update dimensions from new view
8710                contentView = mContainer.getContentView();
8711                width = contentView.getMeasuredWidth();
8712                height = contentView.getMeasuredHeight();
8713
8714                final int lineTop = mLayout.getLineTop(line);
8715                final int lineHeight = lineBottom - lineTop;
8716                coords[1] -= height + lineHeight;
8717            }
8718
8719            // Horizontal clipping
8720            coords[0] = Math.max(0, coords[0]);
8721            coords[0] = Math.min(displayMetrics.widthPixels - width, coords[0]);
8722
8723            mContainer.showAtLocation(TextView.this, Gravity.NO_GRAVITY, coords[0], coords[1]);
8724        }
8725    }
8726
8727    void showSuggestions() {
8728        if (!mSuggestionsEnabled || !isTextEditable()) return;
8729
8730        if (mSuggestionsPopupWindow == null) {
8731            mSuggestionsPopupWindow = new SuggestionsPopupWindow();
8732        }
8733        hideControllers();
8734        mSuggestionsPopupWindow.show();
8735    }
8736
8737    void hideSuggestions() {
8738        if (mSuggestionsPopupWindow != null) {
8739            mSuggestionsPopupWindow.hide();
8740        }
8741    }
8742
8743    /**
8744     * Some parts of the text can have alternate suggestion text attached. This is typically done by
8745     * the IME by adding {@link SuggestionSpan}s to the text.
8746     *
8747     * When suggestions are enabled (default), this list of suggestions will be displayed when the
8748     * user double taps on these parts of the text. No suggestions are displayed when this value is
8749     * false. Use {@link #setSuggestionsEnabled(boolean)} to change this value.
8750     *
8751     * @return true if the suggestions popup window is enabled.
8752     *
8753     * @attr ref android.R.styleable#TextView_suggestionsEnabled
8754     */
8755    public boolean isSuggestionsEnabled() {
8756        return mSuggestionsEnabled;
8757    }
8758
8759    /**
8760     * Enables or disables the suggestion popup. See {@link #isSuggestionsEnabled()}.
8761     *
8762     * @param enabled Whether or not suggestions are enabled.
8763     */
8764    public void setSuggestionsEnabled(boolean enabled) {
8765        mSuggestionsEnabled = enabled;
8766    }
8767
8768    /**
8769     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
8770     * selection is initiated in this View.
8771     *
8772     * The standard implementation populates the menu with a subset of Select All, Cut, Copy and
8773     * Paste actions, depending on what this View supports.
8774     *
8775     * A custom implementation can add new entries in the default menu in its
8776     * {@link ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The default actions
8777     * can also be removed from the menu using {@link Menu#removeItem(int)} and passing
8778     * {@link android.R.id#selectAll}, {@link android.R.id#cut}, {@link android.R.id#copy} or
8779     * {@link android.R.id#paste} ids as parameters.
8780     *
8781     * Returning false from {@link ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will
8782     * prevent the action mode from being started.
8783     *
8784     * Action click events should be handled by the custom implementation of
8785     * {@link ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
8786     *
8787     * Note that text selection mode is not started when a TextView receives focus and the
8788     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
8789     * that case, to allow for quick replacement.
8790     */
8791    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
8792        mCustomSelectionActionModeCallback = actionModeCallback;
8793    }
8794
8795    /**
8796     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
8797     *
8798     * @return The current custom selection callback.
8799     */
8800    public ActionMode.Callback getCustomSelectionActionModeCallback() {
8801        return mCustomSelectionActionModeCallback;
8802    }
8803
8804    /**
8805     *
8806     * @return true if the selection mode was actually started.
8807     */
8808    private boolean startSelectionActionMode() {
8809        if (mSelectionActionMode != null) {
8810            // Selection action mode is already started
8811            return false;
8812        }
8813
8814        if (!canSelectText() || !requestFocus()) {
8815            Log.w(LOG_TAG, "TextView does not support text selection. Action mode cancelled.");
8816            return false;
8817        }
8818
8819        if (!hasSelection()) {
8820            // There may already be a selection on device rotation
8821            boolean currentWordSelected = selectCurrentWord();
8822            if (!currentWordSelected) {
8823                // No word found under cursor or text selection not permitted.
8824                return false;
8825            }
8826        }
8827
8828        ActionMode.Callback actionModeCallback = new SelectionActionModeCallback();
8829        mSelectionActionMode = startActionMode(actionModeCallback);
8830        final boolean selectionStarted = mSelectionActionMode != null;
8831
8832        if (selectionStarted && !mTextIsSelectable) {
8833            // Show the IME to be able to replace text, except when selecting non editable text.
8834            final InputMethodManager imm = InputMethodManager.peekInstance();
8835            if (imm != null) imm.showSoftInput(this, 0, null);
8836        }
8837
8838        return selectionStarted;
8839    }
8840
8841    private void stopSelectionActionMode() {
8842        if (mSelectionActionMode != null) {
8843            // This will hide the mSelectionModifierCursorController
8844            mSelectionActionMode.finish();
8845        }
8846    }
8847
8848    /**
8849     * Paste clipboard content between min and max positions.
8850     */
8851    private void paste(int min, int max) {
8852        ClipboardManager clipboard =
8853            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
8854        ClipData clip = clipboard.getPrimaryClip();
8855        if (clip != null) {
8856            boolean didFirst = false;
8857            for (int i=0; i<clip.getItemCount(); i++) {
8858                CharSequence paste = clip.getItemAt(i).coerceToText(getContext());
8859                if (paste != null) {
8860                    if (!didFirst) {
8861                        long minMax = prepareSpacesAroundPaste(min, max, paste);
8862                        min = extractRangeStartFromLong(minMax);
8863                        max = extractRangeEndFromLong(minMax);
8864                        Selection.setSelection((Spannable) mText, max);
8865                        ((Editable) mText).replace(min, max, paste);
8866                        didFirst = true;
8867                    } else {
8868                        ((Editable) mText).insert(getSelectionEnd(), "\n");
8869                        ((Editable) mText).insert(getSelectionEnd(), paste);
8870                    }
8871                }
8872            }
8873            stopSelectionActionMode();
8874            sLastCutOrCopyTime = 0;
8875        }
8876    }
8877
8878    private void setPrimaryClip(ClipData clip) {
8879        ClipboardManager clipboard = (ClipboardManager) getContext().
8880                getSystemService(Context.CLIPBOARD_SERVICE);
8881        clipboard.setPrimaryClip(clip);
8882        sLastCutOrCopyTime = SystemClock.uptimeMillis();
8883    }
8884
8885    /**
8886     * An ActionMode Callback class that is used to provide actions while in text selection mode.
8887     *
8888     * The default callback provides a subset of Select All, Cut, Copy and Paste actions, depending
8889     * on which of these this TextView supports.
8890     */
8891    private class SelectionActionModeCallback implements ActionMode.Callback {
8892
8893        @Override
8894        public boolean onCreateActionMode(ActionMode mode, Menu menu) {
8895            TypedArray styledAttributes = mContext.obtainStyledAttributes(R.styleable.Theme);
8896
8897            boolean allowText = getContext().getResources().getBoolean(
8898                    com.android.internal.R.bool.allow_action_menu_item_text_with_icon);
8899
8900            mode.setTitle(allowText ?
8901                    mContext.getString(com.android.internal.R.string.textSelectionCABTitle) : null);
8902            mode.setSubtitle(null);
8903
8904            int selectAllIconId = 0; // No icon by default
8905            if (!allowText) {
8906                // Provide an icon, text will not be displayed on smaller screens.
8907                selectAllIconId = styledAttributes.getResourceId(
8908                        R.styleable.Theme_actionModeSelectAllDrawable, 0);
8909            }
8910
8911            menu.add(0, ID_SELECT_ALL, 0, com.android.internal.R.string.selectAll).
8912                    setIcon(selectAllIconId).
8913                    setAlphabeticShortcut('a').
8914                    setShowAsAction(
8915                            MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
8916
8917            if (canCut()) {
8918                menu.add(0, ID_CUT, 0, com.android.internal.R.string.cut).
8919                    setIcon(styledAttributes.getResourceId(
8920                            R.styleable.Theme_actionModeCutDrawable, 0)).
8921                    setAlphabeticShortcut('x').
8922                    setShowAsAction(
8923                            MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
8924            }
8925
8926            if (canCopy()) {
8927                menu.add(0, ID_COPY, 0, com.android.internal.R.string.copy).
8928                    setIcon(styledAttributes.getResourceId(
8929                            R.styleable.Theme_actionModeCopyDrawable, 0)).
8930                    setAlphabeticShortcut('c').
8931                    setShowAsAction(
8932                            MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
8933            }
8934
8935            if (canPaste()) {
8936                menu.add(0, ID_PASTE, 0, com.android.internal.R.string.paste).
8937                        setIcon(styledAttributes.getResourceId(
8938                                R.styleable.Theme_actionModePasteDrawable, 0)).
8939                        setAlphabeticShortcut('v').
8940                        setShowAsAction(
8941                                MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
8942            }
8943
8944            styledAttributes.recycle();
8945
8946            if (mCustomSelectionActionModeCallback != null) {
8947                if (!mCustomSelectionActionModeCallback.onCreateActionMode(mode, menu)) {
8948                    // The custom mode can choose to cancel the action mode
8949                    return false;
8950                }
8951            }
8952
8953            if (menu.hasVisibleItems() || mode.getCustomView() != null) {
8954                getSelectionController().show();
8955                return true;
8956            } else {
8957                return false;
8958            }
8959        }
8960
8961        @Override
8962        public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
8963            if (mCustomSelectionActionModeCallback != null) {
8964                return mCustomSelectionActionModeCallback.onPrepareActionMode(mode, menu);
8965            }
8966            return true;
8967        }
8968
8969        @Override
8970        public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
8971            if (mCustomSelectionActionModeCallback != null &&
8972                 mCustomSelectionActionModeCallback.onActionItemClicked(mode, item)) {
8973                return true;
8974            }
8975            return onTextContextMenuItem(item.getItemId());
8976        }
8977
8978        @Override
8979        public void onDestroyActionMode(ActionMode mode) {
8980            if (mCustomSelectionActionModeCallback != null) {
8981                mCustomSelectionActionModeCallback.onDestroyActionMode(mode);
8982            }
8983            Selection.setSelection((Spannable) mText, getSelectionEnd());
8984
8985            if (mSelectionModifierCursorController != null) {
8986                mSelectionModifierCursorController.hide();
8987            }
8988
8989            mSelectionActionMode = null;
8990        }
8991    }
8992
8993    private class PastePopupWindow implements OnClickListener {
8994        private final PopupWindow mContainer;
8995        private final View[] mPasteViews = new View[4];
8996        private final int[] mPasteViewLayouts = new int[] {
8997                mTextEditPasteWindowLayout,  mTextEditNoPasteWindowLayout,
8998                mTextEditSidePasteWindowLayout, mTextEditSideNoPasteWindowLayout };
8999
9000        public PastePopupWindow() {
9001            mContainer = new PopupWindow(TextView.this.mContext, null,
9002                    com.android.internal.R.attr.textSelectHandleWindowStyle);
9003            mContainer.setSplitTouchEnabled(true);
9004            mContainer.setClippingEnabled(false);
9005            mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL);
9006
9007            mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
9008            mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
9009        }
9010
9011        private int viewIndex(boolean onTop) {
9012            return (onTop ? 0 : 1<<1) + (canPaste() ? 0 : 1<<0);
9013        }
9014
9015        private void updateContent(boolean onTop) {
9016            final int viewIndex = viewIndex(onTop);
9017            View view = mPasteViews[viewIndex];
9018
9019            if (view == null) {
9020                final int layout = mPasteViewLayouts[viewIndex];
9021                LayoutInflater inflater = (LayoutInflater)TextView.this.mContext.
9022                    getSystemService(Context.LAYOUT_INFLATER_SERVICE);
9023                if (inflater != null) {
9024                    view = inflater.inflate(layout, null);
9025                }
9026
9027                if (view == null) {
9028                    throw new IllegalArgumentException("Unable to inflate TextEdit paste window");
9029                }
9030
9031                final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
9032                view.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
9033                        ViewGroup.LayoutParams.WRAP_CONTENT));
9034                view.measure(size, size);
9035
9036                view.setOnClickListener(this);
9037
9038                mPasteViews[viewIndex] = view;
9039            }
9040
9041            mContainer.setContentView(view);
9042        }
9043
9044        public void show() {
9045            updateContent(true);
9046            positionAtCursor();
9047        }
9048
9049        public void hide() {
9050            mContainer.dismiss();
9051        }
9052
9053        public boolean isShowing() {
9054            return mContainer.isShowing();
9055        }
9056
9057        @Override
9058        public void onClick(View v) {
9059            if (canPaste()) {
9060                paste(getSelectionStart(), getSelectionEnd());
9061            }
9062            hide();
9063        }
9064
9065        void positionAtCursor() {
9066            View contentView = mContainer.getContentView();
9067            int width = contentView.getMeasuredWidth();
9068            int height = contentView.getMeasuredHeight();
9069            final int offset = TextView.this.getSelectionStart();
9070            final int line = mLayout.getLineForOffset(offset);
9071            final int lineTop = mLayout.getLineTop(line);
9072            float primaryHorizontal = mLayout.getPrimaryHorizontal(offset);
9073
9074            final Rect bounds = sCursorControllerTempRect;
9075            bounds.left = (int) (primaryHorizontal - width / 2.0f);
9076            bounds.top = lineTop - height;
9077
9078            bounds.right = bounds.left + width;
9079            bounds.bottom = bounds.top + height;
9080
9081            convertFromViewportToContentCoordinates(bounds);
9082
9083            final int[] coords = mTempCoords;
9084            TextView.this.getLocationInWindow(coords);
9085            coords[0] += bounds.left;
9086            coords[1] += bounds.top;
9087
9088            final int screenWidth = mContext.getResources().getDisplayMetrics().widthPixels;
9089            if (coords[1] < 0) {
9090                updateContent(false);
9091                // Update dimensions from new view
9092                contentView = mContainer.getContentView();
9093                width = contentView.getMeasuredWidth();
9094                height = contentView.getMeasuredHeight();
9095
9096                // Vertical clipping, move under edited line and to the side of insertion cursor
9097                // TODO bottom clipping in case there is no system bar
9098                coords[1] += height;
9099                final int lineBottom = mLayout.getLineBottom(line);
9100                final int lineHeight = lineBottom - lineTop;
9101                coords[1] += lineHeight;
9102
9103                // Move to right hand side of insertion cursor by default. TODO RTL text.
9104                final Drawable handle = mContext.getResources().getDrawable(mTextSelectHandleRes);
9105                final int handleHalfWidth = handle.getIntrinsicWidth() / 2;
9106
9107                if (primaryHorizontal + handleHalfWidth + width < screenWidth) {
9108                    coords[0] += handleHalfWidth + width / 2;
9109                } else {
9110                    coords[0] -= handleHalfWidth + width / 2;
9111                }
9112            } else {
9113                // Horizontal clipping
9114                coords[0] = Math.max(0, coords[0]);
9115                coords[0] = Math.min(screenWidth - width, coords[0]);
9116            }
9117
9118            mContainer.showAtLocation(TextView.this, Gravity.NO_GRAVITY, coords[0], coords[1]);
9119        }
9120    }
9121
9122    private abstract class HandleView extends View implements ViewTreeObserver.OnPreDrawListener {
9123        protected Drawable mDrawable;
9124        private final PopupWindow mContainer;
9125        // Position with respect to the parent TextView
9126        private int mPositionX, mPositionY;
9127        private boolean mIsDragging;
9128        // Offset from touch position to mPosition
9129        private float mTouchToWindowOffsetX, mTouchToWindowOffsetY;
9130        protected float mHotspotX;
9131        // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up
9132        private float mTouchOffsetY;
9133        // Where the touch position should be on the handle to ensure a maximum cursor visibility
9134        private float mIdealVerticalOffset;
9135        // Parent's (TextView) previous position in window
9136        private int mLastParentX, mLastParentY;
9137        // PopupWindow container absolute position with respect to the enclosing window
9138        private int mContainerPositionX, mContainerPositionY;
9139        // Visible or not (scrolled off screen), whether or not this handle should be visible
9140        private boolean mIsActive = false;
9141        // Used to detect that setFrame was called
9142        private boolean mNeedsUpdate = true;
9143
9144        public HandleView() {
9145            super(TextView.this.mContext);
9146            mContainer = new PopupWindow(TextView.this.mContext, null,
9147                    com.android.internal.R.attr.textSelectHandleWindowStyle);
9148            mContainer.setSplitTouchEnabled(true);
9149            mContainer.setClippingEnabled(false);
9150            mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL);
9151            mContainer.setContentView(this);
9152
9153            initDrawable();
9154
9155            final int handleHeight = mDrawable.getIntrinsicHeight();
9156            mTouchOffsetY = -0.3f * handleHeight;
9157            mIdealVerticalOffset = 0.7f * handleHeight;
9158        }
9159
9160        @Override
9161        protected boolean setFrame(int left, int top, int right, int bottom) {
9162            boolean changed = super.setFrame(left, top, right, bottom);
9163            // onPreDraw is called for PhoneWindow before the layout of this view is
9164            // performed. Make sure to update position, even if container didn't move.
9165            if (changed) mNeedsUpdate  = true;
9166            return changed;
9167        }
9168
9169        protected abstract void initDrawable();
9170
9171        // Touch-up filter: number of previous positions remembered
9172        private static final int HISTORY_SIZE = 5;
9173        private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150;
9174        private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350;
9175        private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE];
9176        private final int[] mPreviousOffsets = new int[HISTORY_SIZE];
9177        private int mPreviousOffsetIndex = 0;
9178        private int mNumberPreviousOffsets = 0;
9179
9180        private void startTouchUpFilter(int offset) {
9181            mNumberPreviousOffsets = 0;
9182            addPositionToTouchUpFilter(offset);
9183        }
9184
9185        private void addPositionToTouchUpFilter(int offset) {
9186            if (mNumberPreviousOffsets > 0 &&
9187                    mPreviousOffsets[mPreviousOffsetIndex] == offset) {
9188                // Make sure only actual changes of position are recorded.
9189                return;
9190            }
9191
9192            mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE;
9193            mPreviousOffsets[mPreviousOffsetIndex] = offset;
9194            mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis();
9195            mNumberPreviousOffsets++;
9196        }
9197
9198        private void filterOnTouchUp() {
9199            final long now = SystemClock.uptimeMillis();
9200            int i = 0;
9201            int index = mPreviousOffsetIndex;
9202            final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE);
9203            while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) {
9204                i++;
9205                index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE;
9206            }
9207
9208            if (i > 0 && i < iMax &&
9209                    (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) {
9210                updateOffset(mPreviousOffsets[index]);
9211            }
9212        }
9213
9214        @Override
9215        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
9216            setMeasuredDimension(mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight());
9217        }
9218
9219        public void show() {
9220            if (isShowing()) {
9221                mContainer.update(mContainerPositionX, mContainerPositionY,
9222                        mRight - mLeft, mBottom - mTop);
9223            } else {
9224                mContainer.showAtLocation(TextView.this, 0,
9225                        mContainerPositionX, mContainerPositionY);
9226
9227                mIsActive = true;
9228
9229                ViewTreeObserver vto = TextView.this.getViewTreeObserver();
9230                vto.addOnPreDrawListener(this);
9231            }
9232        }
9233
9234        protected void dismiss() {
9235            mIsDragging = false;
9236            mContainer.dismiss();
9237        }
9238
9239        public void hide() {
9240            dismiss();
9241
9242            mIsActive = false;
9243
9244            ViewTreeObserver vto = TextView.this.getViewTreeObserver();
9245            vto.removeOnPreDrawListener(this);
9246        }
9247
9248        public boolean isShowing() {
9249            return mContainer.isShowing();
9250        }
9251
9252        private boolean isPositionVisible() {
9253            // Always show a dragging handle.
9254            if (mIsDragging) {
9255                return true;
9256            }
9257
9258            if (isInBatchEditMode()) {
9259                return false;
9260            }
9261
9262            final int extendedPaddingTop = getExtendedPaddingTop();
9263            final int extendedPaddingBottom = getExtendedPaddingBottom();
9264            final int compoundPaddingLeft = getCompoundPaddingLeft();
9265            final int compoundPaddingRight = getCompoundPaddingRight();
9266
9267            final TextView textView = TextView.this;
9268
9269            if (mTempRect == null) mTempRect = new Rect();
9270            final Rect clip = mTempRect;
9271            clip.left = compoundPaddingLeft;
9272            clip.top = extendedPaddingTop;
9273            clip.right = textView.getWidth() - compoundPaddingRight;
9274            clip.bottom = textView.getHeight() - extendedPaddingBottom;
9275
9276            final ViewParent parent = textView.getParent();
9277            if (parent == null || !parent.getChildVisibleRect(textView, clip, null)) {
9278                return false;
9279            }
9280
9281            final int[] coords = mTempCoords;
9282            textView.getLocationInWindow(coords);
9283            final int posX = coords[0] + mPositionX + (int) mHotspotX;
9284            final int posY = coords[1] + mPositionY;
9285
9286            // Offset by 1 to take into account 0.5 and int rounding around getPrimaryHorizontal.
9287            return posX >= clip.left - 1 && posX <= clip.right + 1 &&
9288                    posY >= clip.top && posY <= clip.bottom;
9289        }
9290
9291        public abstract int getCurrentCursorOffset();
9292
9293        public abstract void updateOffset(int offset);
9294
9295        public abstract void updatePosition(float x, float y);
9296
9297        protected void positionAtCursorOffset(int offset) {
9298            // A HandleView relies on the layout, which may be nulled by external methods.
9299            if (mLayout == null) {
9300                // Will update controllers' state, hiding them and stopping selection mode if needed
9301                prepareCursorControllers();
9302                return;
9303            }
9304
9305            addPositionToTouchUpFilter(offset);
9306            final int line = mLayout.getLineForOffset(offset);
9307            final int lineBottom = mLayout.getLineBottom(line);
9308
9309            mPositionX = (int) (mLayout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX);
9310            mPositionY = lineBottom;
9311
9312            // Take TextView's padding into account.
9313            mPositionX += viewportToContentHorizontalOffset();
9314            mPositionY += viewportToContentVerticalOffset();
9315        }
9316
9317        private void checkForContainerPositionChange() {
9318            positionAtCursorOffset(getCurrentCursorOffset());
9319
9320            final int previousContainerPositionX = mContainerPositionX;
9321            final int previousContainerPositionY = mContainerPositionY;
9322
9323            TextView.this.getLocationInWindow(mTempCoords);
9324            mContainerPositionX = mTempCoords[0] + mPositionX;
9325            mContainerPositionY = mTempCoords[1] + mPositionY;
9326
9327            mNeedsUpdate |= previousContainerPositionX != mContainerPositionX;
9328            mNeedsUpdate |= previousContainerPositionY != mContainerPositionY;
9329        }
9330
9331        public boolean onPreDraw() {
9332            checkForContainerPositionChange();
9333            if (mNeedsUpdate) {
9334                if (mIsDragging) {
9335                    if (mTempCoords[0] != mLastParentX || mTempCoords[1] != mLastParentY) {
9336                        mTouchToWindowOffsetX += mTempCoords[0] - mLastParentX;
9337                        mTouchToWindowOffsetY += mTempCoords[1] - mLastParentY;
9338                        mLastParentX = mTempCoords[0];
9339                        mLastParentY = mTempCoords[1];
9340                    }
9341                }
9342
9343                onHandleMoved();
9344
9345                if (isPositionVisible()) {
9346                    mContainer.update(mContainerPositionX, mContainerPositionY,
9347                            mRight - mLeft, mBottom - mTop);
9348
9349                    if (mIsActive && !isShowing()) {
9350                        show();
9351                    }
9352                } else {
9353                    if (isShowing()) {
9354                        dismiss();
9355                    }
9356                }
9357                mNeedsUpdate = false;
9358            }
9359            return true;
9360        }
9361
9362        @Override
9363        protected void onDraw(Canvas c) {
9364            mDrawable.setBounds(0, 0, mRight - mLeft, mBottom - mTop);
9365            mDrawable.draw(c);
9366        }
9367
9368        @Override
9369        public boolean onTouchEvent(MotionEvent ev) {
9370            switch (ev.getActionMasked()) {
9371                case MotionEvent.ACTION_DOWN: {
9372                    startTouchUpFilter(getCurrentCursorOffset());
9373                    mTouchToWindowOffsetX = ev.getRawX() - mPositionX;
9374                    mTouchToWindowOffsetY = ev.getRawY() - mPositionY;
9375
9376                    final int[] coords = mTempCoords;
9377                    TextView.this.getLocationInWindow(coords);
9378                    mLastParentX = coords[0];
9379                    mLastParentY = coords[1];
9380                    mIsDragging = true;
9381                    break;
9382                }
9383
9384                case MotionEvent.ACTION_MOVE: {
9385                    final float rawX = ev.getRawX();
9386                    final float rawY = ev.getRawY();
9387
9388                    // Vertical hysteresis: vertical down movement tends to snap to ideal offset
9389                    final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY;
9390                    final float currentVerticalOffset = rawY - mPositionY - mLastParentY;
9391                    float newVerticalOffset;
9392                    if (previousVerticalOffset < mIdealVerticalOffset) {
9393                        newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset);
9394                        newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset);
9395                    } else {
9396                        newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset);
9397                        newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset);
9398                    }
9399                    mTouchToWindowOffsetY = newVerticalOffset + mLastParentY;
9400
9401                    final float newPosX = rawX - mTouchToWindowOffsetX + mHotspotX;
9402                    final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY;
9403
9404                    updatePosition(newPosX, newPosY);
9405                    break;
9406                }
9407
9408                case MotionEvent.ACTION_UP:
9409                    filterOnTouchUp();
9410                    mIsDragging = false;
9411                    break;
9412
9413                case MotionEvent.ACTION_CANCEL:
9414                    mIsDragging = false;
9415                    break;
9416            }
9417            return true;
9418        }
9419
9420        public boolean isDragging() {
9421            return mIsDragging;
9422        }
9423
9424        void onHandleMoved() {
9425            // Does nothing by default
9426        }
9427
9428        public void onDetached() {
9429            // Should be overriden to clean possible Runnable
9430        }
9431    }
9432
9433    private class InsertionHandleView extends HandleView {
9434        private static final int DELAY_BEFORE_FADE_OUT = 4000;
9435        private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds
9436
9437        // Used to detect taps on the insertion handle, which will affect the PastePopupWindow
9438        private float mDownPositionX, mDownPositionY;
9439        private PastePopupWindow mPastePopupWindow;
9440        private Runnable mHider;
9441        private Runnable mPastePopupShower;
9442
9443        @Override
9444        public void show() {
9445            super.show();
9446            hideDelayed();
9447            hidePastePopupWindow();
9448        }
9449
9450        public void show(int delayBeforePaste) {
9451            show();
9452
9453            final long durationSinceCutOrCopy = SystemClock.uptimeMillis() - sLastCutOrCopyTime;
9454            if (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION) {
9455                delayBeforePaste = 0;
9456            }
9457            if (delayBeforePaste == 0 || canPaste()) {
9458                if (mPastePopupShower == null) {
9459                    mPastePopupShower = new Runnable() {
9460                        public void run() {
9461                            showPastePopupWindow();
9462                        }
9463                    };
9464                }
9465                TextView.this.postDelayed(mPastePopupShower, delayBeforePaste);
9466            }
9467        }
9468
9469        @Override
9470        protected void dismiss() {
9471            super.dismiss();
9472            onDetached();
9473        }
9474
9475        private void hideDelayed() {
9476            removeHiderCallback();
9477            if (mHider == null) {
9478                mHider = new Runnable() {
9479                    public void run() {
9480                        hide();
9481                    }
9482                };
9483            }
9484            TextView.this.postDelayed(mHider, DELAY_BEFORE_FADE_OUT);
9485        }
9486
9487        private void removeHiderCallback() {
9488            if (mHider != null) {
9489                TextView.this.removeCallbacks(mHider);
9490            }
9491        }
9492
9493        @Override
9494        protected void initDrawable() {
9495            if (mSelectHandleCenter == null) {
9496                mSelectHandleCenter = mContext.getResources().getDrawable(
9497                        mTextSelectHandleRes);
9498            }
9499            mDrawable = mSelectHandleCenter;
9500            mHotspotX = mDrawable.getIntrinsicWidth() / 2.0f;
9501        }
9502
9503        @Override
9504        public boolean onTouchEvent(MotionEvent ev) {
9505            final boolean result = super.onTouchEvent(ev);
9506
9507            switch (ev.getActionMasked()) {
9508                case MotionEvent.ACTION_DOWN:
9509                    mDownPositionX = ev.getRawX();
9510                    mDownPositionY = ev.getRawY();
9511                    break;
9512
9513                case MotionEvent.ACTION_UP:
9514                    final float deltaX = mDownPositionX - ev.getRawX();
9515                    final float deltaY = mDownPositionY - ev.getRawY();
9516                    final float distanceSquared = deltaX * deltaX + deltaY * deltaY;
9517                    if (distanceSquared < mSquaredTouchSlopDistance) {
9518                        if (mPastePopupWindow != null && mPastePopupWindow.isShowing()) {
9519                            // Tapping on the handle dismisses the displayed paste view,
9520                            mPastePopupWindow.hide();
9521                        } else {
9522                            show(0);
9523                        }
9524                    }
9525                    hideDelayed();
9526                    break;
9527
9528                case MotionEvent.ACTION_CANCEL:
9529                    hideDelayed();
9530                    break;
9531
9532                default:
9533                    break;
9534            }
9535
9536            return result;
9537        }
9538
9539        @Override
9540        public int getCurrentCursorOffset() {
9541            return TextView.this.getSelectionStart();
9542        }
9543
9544        @Override
9545        public void updateOffset(int offset) {
9546            Selection.setSelection((Spannable) mText, offset);
9547        }
9548
9549        @Override
9550        public void updatePosition(float x, float y) {
9551            updateOffset(getOffsetForPosition(x, y));
9552        }
9553
9554        void showPastePopupWindow() {
9555            if (mPastePopupWindow == null) {
9556                mPastePopupWindow = new PastePopupWindow();
9557            }
9558            mPastePopupWindow.show();
9559        }
9560
9561        @Override
9562        void onHandleMoved() {
9563            removeHiderCallback();
9564            hidePastePopupWindow();
9565        }
9566
9567        void hidePastePopupWindow() {
9568            if (mPastePopupShower != null) {
9569                TextView.this.removeCallbacks(mPastePopupShower);
9570            }
9571            if (mPastePopupWindow != null) {
9572                mPastePopupWindow.hide();
9573            }
9574        }
9575
9576        @Override
9577        public void onDetached() {
9578            removeHiderCallback();
9579            hidePastePopupWindow();
9580        }
9581    }
9582
9583    private class SelectionStartHandleView extends HandleView {
9584        @Override
9585        protected void initDrawable() {
9586            if (mSelectHandleLeft == null) {
9587                mSelectHandleLeft = mContext.getResources().getDrawable(
9588                        mTextSelectHandleLeftRes);
9589            }
9590            mDrawable = mSelectHandleLeft;
9591            mHotspotX = mDrawable.getIntrinsicWidth() * 3.0f / 4.0f;
9592        }
9593
9594        @Override
9595        public int getCurrentCursorOffset() {
9596            return TextView.this.getSelectionStart();
9597        }
9598
9599        @Override
9600        public void updateOffset(int offset) {
9601            Selection.setSelection((Spannable) mText, offset, getSelectionEnd());
9602        }
9603
9604        @Override
9605        public void updatePosition(float x, float y) {
9606            final int selectionStart = getSelectionStart();
9607            final int selectionEnd = getSelectionEnd();
9608
9609            int offset = getOffsetForPosition(x, y);
9610
9611            // No need to redraw when the offset is unchanged
9612            if (offset == selectionStart) return;
9613            // Handles can not cross and selection is at least one character
9614            if (offset >= selectionEnd) offset = selectionEnd - 1;
9615
9616            Selection.setSelection((Spannable) mText, offset, selectionEnd);
9617        }
9618    }
9619
9620    private class SelectionEndHandleView extends HandleView {
9621        @Override
9622        protected void initDrawable() {
9623            if (mSelectHandleRight == null) {
9624                mSelectHandleRight = mContext.getResources().getDrawable(
9625                        mTextSelectHandleRightRes);
9626            }
9627            mDrawable = mSelectHandleRight;
9628            mHotspotX = mDrawable.getIntrinsicWidth() / 4.0f;
9629        }
9630
9631        @Override
9632        public int getCurrentCursorOffset() {
9633            return TextView.this.getSelectionEnd();
9634        }
9635
9636        @Override
9637        public void updateOffset(int offset) {
9638            Selection.setSelection((Spannable) mText, getSelectionStart(), offset);
9639        }
9640
9641        @Override
9642        public void updatePosition(float x, float y) {
9643            final int selectionStart = getSelectionStart();
9644            final int selectionEnd = getSelectionEnd();
9645
9646            int offset = getOffsetForPosition(x, y);
9647
9648            // No need to redraw when the offset is unchanged
9649            if (offset == selectionEnd) return;
9650            // Handles can not cross and selection is at least one character
9651            if (offset <= selectionStart) offset = selectionStart + 1;
9652
9653            Selection.setSelection((Spannable) mText, selectionStart, offset);
9654        }
9655    }
9656
9657    /**
9658     * A CursorController instance can be used to control a cursor in the text.
9659     * It is not used outside of {@link TextView}.
9660     * @hide
9661     */
9662    private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener {
9663        /**
9664         * Makes the cursor controller visible on screen. Will be drawn by {@link #draw(Canvas)}.
9665         * See also {@link #hide()}.
9666         */
9667        public void show();
9668
9669        /**
9670         * Hide the cursor controller from screen.
9671         * See also {@link #show()}.
9672         */
9673        public void hide();
9674
9675        /**
9676         * This method is called by {@link #onTouchEvent(MotionEvent)} and gives the controller
9677         * a chance to become active and/or visible.
9678         * @param event The touch event
9679         */
9680        public boolean onTouchEvent(MotionEvent event);
9681
9682        /**
9683         * Called when the view is detached from window. Perform house keeping task, such as
9684         * stopping Runnable thread that would otherwise keep a reference on the context, thus
9685         * preventing the activity from being recycled.
9686         */
9687        public void onDetached();
9688    }
9689
9690    private class InsertionPointCursorController implements CursorController {
9691        private static final int DELAY_BEFORE_PASTE = 2000;
9692
9693        private InsertionHandleView mHandle;
9694
9695        public void show() {
9696            ((InsertionHandleView) getHandle()).show(DELAY_BEFORE_PASTE);
9697        }
9698
9699        public void showWithPaste() {
9700            ((InsertionHandleView) getHandle()).show(0);
9701        }
9702
9703        public void hide() {
9704            if (mHandle != null) {
9705                mHandle.hide();
9706            }
9707        }
9708
9709        public boolean onTouchEvent(MotionEvent ev) {
9710            return false;
9711        }
9712
9713        public void onTouchModeChanged(boolean isInTouchMode) {
9714            if (!isInTouchMode) {
9715                hide();
9716            }
9717        }
9718
9719        private HandleView getHandle() {
9720            if (mHandle == null) {
9721                mHandle = new InsertionHandleView();
9722            }
9723            return mHandle;
9724        }
9725
9726        @Override
9727        public void onDetached() {
9728            final ViewTreeObserver observer = getViewTreeObserver();
9729            observer.removeOnTouchModeChangeListener(this);
9730
9731            if (mHandle != null) mHandle.onDetached();
9732        }
9733    }
9734
9735    private class SelectionModifierCursorController implements CursorController {
9736        // The cursor controller handles, lazily created when shown.
9737        private SelectionStartHandleView mStartHandle;
9738        private SelectionEndHandleView mEndHandle;
9739        // The offsets of that last touch down event. Remembered to start selection there.
9740        private int mMinTouchOffset, mMaxTouchOffset;
9741
9742        // Double tap detection
9743        private long mPreviousTapUpTime = 0;
9744        private float mPreviousTapPositionX, mPreviousTapPositionY;
9745
9746        SelectionModifierCursorController() {
9747            resetTouchOffsets();
9748        }
9749
9750        public void show() {
9751            if (isInBatchEditMode()) {
9752                return;
9753            }
9754
9755            // Lazy object creation has to be done before updatePosition() is called.
9756            if (mStartHandle == null) mStartHandle = new SelectionStartHandleView();
9757            if (mEndHandle == null) mEndHandle = new SelectionEndHandleView();
9758
9759            mStartHandle.show();
9760            mEndHandle.show();
9761
9762            hideInsertionPointCursorController();
9763            hideSuggestions();
9764        }
9765
9766        public void hide() {
9767            if (mStartHandle != null) mStartHandle.hide();
9768            if (mEndHandle != null) mEndHandle.hide();
9769        }
9770
9771        public boolean onTouchEvent(MotionEvent event) {
9772            // This is done even when the View does not have focus, so that long presses can start
9773            // selection and tap can move cursor from this tap position.
9774            if (isTextEditable() || mTextIsSelectable) {
9775                switch (event.getActionMasked()) {
9776                    case MotionEvent.ACTION_DOWN:
9777                        final float x = event.getX();
9778                        final float y = event.getY();
9779
9780                        // Remember finger down position, to be able to start selection from there
9781                        mMinTouchOffset = mMaxTouchOffset = getOffsetForPosition(x, y);
9782
9783                        // Double tap detection
9784                        long duration = SystemClock.uptimeMillis() - mPreviousTapUpTime;
9785                        if (duration <= ViewConfiguration.getDoubleTapTimeout() &&
9786                                isPositionOnText(x, y)) {
9787                            final float deltaX = x - mPreviousTapPositionX;
9788                            final float deltaY = y - mPreviousTapPositionY;
9789                            final float distanceSquared = deltaX * deltaX + deltaY * deltaY;
9790                            if (distanceSquared < mSquaredTouchSlopDistance) {
9791                                showSuggestions();
9792                                mDiscardNextActionUp = true;
9793                            }
9794                        }
9795
9796                        mPreviousTapPositionX = x;
9797                        mPreviousTapPositionY = y;
9798
9799                        break;
9800
9801                    case MotionEvent.ACTION_POINTER_DOWN:
9802                    case MotionEvent.ACTION_POINTER_UP:
9803                        // Handle multi-point gestures. Keep min and max offset positions.
9804                        // Only activated for devices that correctly handle multi-touch.
9805                        if (mContext.getPackageManager().hasSystemFeature(
9806                                PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) {
9807                            updateMinAndMaxOffsets(event);
9808                        }
9809                        break;
9810
9811                    case MotionEvent.ACTION_UP:
9812                        mPreviousTapUpTime = SystemClock.uptimeMillis();
9813                        break;
9814                }
9815            }
9816            return false;
9817        }
9818
9819        /**
9820         * @param event
9821         */
9822        private void updateMinAndMaxOffsets(MotionEvent event) {
9823            int pointerCount = event.getPointerCount();
9824            for (int index = 0; index < pointerCount; index++) {
9825                int offset = getOffsetForPosition(event.getX(index), event.getY(index));
9826                if (offset < mMinTouchOffset) mMinTouchOffset = offset;
9827                if (offset > mMaxTouchOffset) mMaxTouchOffset = offset;
9828            }
9829        }
9830
9831        public int getMinTouchOffset() {
9832            return mMinTouchOffset;
9833        }
9834
9835        public int getMaxTouchOffset() {
9836            return mMaxTouchOffset;
9837        }
9838
9839        public void resetTouchOffsets() {
9840            mMinTouchOffset = mMaxTouchOffset = -1;
9841        }
9842
9843        /**
9844         * @return true iff this controller is currently used to move the selection start.
9845         */
9846        public boolean isSelectionStartDragged() {
9847            return mStartHandle != null && mStartHandle.isDragging();
9848        }
9849
9850        public void onTouchModeChanged(boolean isInTouchMode) {
9851            if (!isInTouchMode) {
9852                hide();
9853            }
9854        }
9855
9856        @Override
9857        public void onDetached() {
9858            final ViewTreeObserver observer = getViewTreeObserver();
9859            observer.removeOnTouchModeChangeListener(this);
9860
9861            if (mStartHandle != null) mStartHandle.onDetached();
9862            if (mEndHandle != null) mEndHandle.onDetached();
9863        }
9864    }
9865
9866    private void hideInsertionPointCursorController() {
9867        // No need to create the controller to hide it.
9868        if (mInsertionPointCursorController != null) {
9869            mInsertionPointCursorController.hide();
9870        }
9871    }
9872
9873    /**
9874     * Hides the insertion controller and stops text selection mode, hiding the selection controller
9875     */
9876    private void hideControllers() {
9877        hideInsertionPointCursorController();
9878        stopSelectionActionMode();
9879        hideSuggestions();
9880    }
9881
9882    /**
9883     * Get the character offset closest to the specified absolute position. A typical use case is to
9884     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
9885     *
9886     * @param x The horizontal absolute position of a point on screen
9887     * @param y The vertical absolute position of a point on screen
9888     * @return the character offset for the character whose position is closest to the specified
9889     *  position. Returns -1 if there is no layout.
9890     */
9891    public int getOffsetForPosition(float x, float y) {
9892        if (getLayout() == null) return -1;
9893        final int line = getLineAtCoordinate(y);
9894        final int offset = getOffsetAtCoordinate(line, x);
9895        return offset;
9896    }
9897
9898    private float convertToLocalHorizontalCoordinate(float x) {
9899        x -= getTotalPaddingLeft();
9900        // Clamp the position to inside of the view.
9901        x = Math.max(0.0f, x);
9902        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
9903        x += getScrollX();
9904        return x;
9905    }
9906
9907    private int getLineAtCoordinate(float y) {
9908        y -= getTotalPaddingTop();
9909        // Clamp the position to inside of the view.
9910        y = Math.max(0.0f, y);
9911        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
9912        y += getScrollY();
9913        return getLayout().getLineForVertical((int) y);
9914    }
9915
9916    private int getOffsetAtCoordinate(int line, float x) {
9917        x = convertToLocalHorizontalCoordinate(x);
9918        return getLayout().getOffsetForHorizontal(line, x);
9919    }
9920
9921    /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed
9922     * in the view. Returns false when the position is in the empty space of left/right of text.
9923     */
9924    private boolean isPositionOnText(float x, float y) {
9925        if (getLayout() == null) return false;
9926
9927        final int line = getLineAtCoordinate(y);
9928        x = convertToLocalHorizontalCoordinate(x);
9929
9930        if (x < getLayout().getLineLeft(line)) return false;
9931        if (x > getLayout().getLineRight(line)) return false;
9932        return true;
9933    }
9934
9935    @Override
9936    public boolean onDragEvent(DragEvent event) {
9937        switch (event.getAction()) {
9938            case DragEvent.ACTION_DRAG_STARTED:
9939                return hasInsertionController();
9940
9941            case DragEvent.ACTION_DRAG_ENTERED:
9942                TextView.this.requestFocus();
9943                return true;
9944
9945            case DragEvent.ACTION_DRAG_LOCATION:
9946                final int offset = getOffsetForPosition(event.getX(), event.getY());
9947                Selection.setSelection((Spannable)mText, offset);
9948                return true;
9949
9950            case DragEvent.ACTION_DROP:
9951                onDrop(event);
9952                return true;
9953
9954            case DragEvent.ACTION_DRAG_ENDED:
9955            case DragEvent.ACTION_DRAG_EXITED:
9956            default:
9957                return true;
9958        }
9959    }
9960
9961    private void onDrop(DragEvent event) {
9962        StringBuilder content = new StringBuilder("");
9963        ClipData clipData = event.getClipData();
9964        final int itemCount = clipData.getItemCount();
9965        for (int i=0; i < itemCount; i++) {
9966            Item item = clipData.getItemAt(i);
9967            content.append(item.coerceToText(TextView.this.mContext));
9968        }
9969
9970        final int offset = getOffsetForPosition(event.getX(), event.getY());
9971
9972        Object localState = event.getLocalState();
9973        DragLocalState dragLocalState = null;
9974        if (localState instanceof DragLocalState) {
9975            dragLocalState = (DragLocalState) localState;
9976        }
9977        boolean dragDropIntoItself = dragLocalState != null &&
9978                dragLocalState.sourceTextView == this;
9979
9980        if (dragDropIntoItself) {
9981            if (offset >= dragLocalState.start && offset < dragLocalState.end) {
9982                // A drop inside the original selection discards the drop.
9983                return;
9984            }
9985        }
9986
9987        final int originalLength = mText.length();
9988        long minMax = prepareSpacesAroundPaste(offset, offset, content);
9989        int min = extractRangeStartFromLong(minMax);
9990        int max = extractRangeEndFromLong(minMax);
9991
9992        Selection.setSelection((Spannable) mText, max);
9993        ((Editable) mText).replace(min, max, content);
9994
9995        if (dragDropIntoItself) {
9996            int dragSourceStart = dragLocalState.start;
9997            int dragSourceEnd = dragLocalState.end;
9998            if (max <= dragSourceStart) {
9999                // Inserting text before selection has shifted positions
10000                final int shift = mText.length() - originalLength;
10001                dragSourceStart += shift;
10002                dragSourceEnd += shift;
10003            }
10004
10005            // Delete original selection
10006            ((Editable) mText).delete(dragSourceStart, dragSourceEnd);
10007
10008            // Make sure we do not leave two adjacent spaces.
10009            if ((dragSourceStart == 0 ||
10010                    Character.isSpaceChar(mTransformed.charAt(dragSourceStart - 1))) &&
10011                    (dragSourceStart == mText.length() ||
10012                    Character.isSpaceChar(mTransformed.charAt(dragSourceStart)))) {
10013                final int pos = dragSourceStart == mText.length() ?
10014                        dragSourceStart - 1 : dragSourceStart;
10015                ((Editable) mText).delete(pos, pos + 1);
10016            }
10017        }
10018    }
10019
10020    /**
10021     * @return True if this view supports insertion handles.
10022     */
10023    boolean hasInsertionController() {
10024        return mInsertionControllerEnabled;
10025    }
10026
10027    /**
10028     * @return True if this view supports selection handles.
10029     */
10030    boolean hasSelectionController() {
10031        return mSelectionControllerEnabled;
10032    }
10033
10034    InsertionPointCursorController getInsertionController() {
10035        if (!mInsertionControllerEnabled) {
10036            return null;
10037        }
10038
10039        if (mInsertionPointCursorController == null) {
10040            mInsertionPointCursorController = new InsertionPointCursorController();
10041
10042            final ViewTreeObserver observer = getViewTreeObserver();
10043            observer.addOnTouchModeChangeListener(mInsertionPointCursorController);
10044        }
10045
10046        return mInsertionPointCursorController;
10047    }
10048
10049    SelectionModifierCursorController getSelectionController() {
10050        if (!mSelectionControllerEnabled) {
10051            return null;
10052        }
10053
10054        if (mSelectionModifierCursorController == null) {
10055            mSelectionModifierCursorController = new SelectionModifierCursorController();
10056
10057            final ViewTreeObserver observer = getViewTreeObserver();
10058            observer.addOnTouchModeChangeListener(mSelectionModifierCursorController);
10059        }
10060
10061        return mSelectionModifierCursorController;
10062    }
10063
10064    boolean isInBatchEditMode() {
10065        final InputMethodState ims = mInputMethodState;
10066        if (ims != null) {
10067            return ims.mBatchEditNesting > 0;
10068        }
10069        return mInBatchEditControllers;
10070    }
10071
10072    @ViewDebug.ExportedProperty(category = "text")
10073    private CharSequence            mText;
10074    private CharSequence            mTransformed;
10075    private BufferType              mBufferType = BufferType.NORMAL;
10076
10077    private int                     mInputType = EditorInfo.TYPE_NULL;
10078    private CharSequence            mHint;
10079    private Layout                  mHintLayout;
10080
10081    private KeyListener             mInput;
10082
10083    private MovementMethod          mMovement;
10084    private TransformationMethod    mTransformation;
10085    private ChangeWatcher           mChangeWatcher;
10086
10087    private ArrayList<TextWatcher>  mListeners = null;
10088
10089    // display attributes
10090    private final TextPaint         mTextPaint;
10091    private boolean                 mUserSetTextScaleX;
10092    private final Paint             mHighlightPaint;
10093    private int                     mHighlightColor = 0xCC475925;
10094    /**
10095     * This is temporarily visible to fix bug 3085564 in webView. Do not rely on
10096     * this field being protected. Will be restored as private when lineHeight
10097     * feature request 3215097 is implemented
10098     * @hide
10099     */
10100    protected Layout                mLayout;
10101
10102    private long                    mShowCursor;
10103    private Blink                   mBlink;
10104    private boolean                 mCursorVisible = true;
10105
10106    // Cursor Controllers.
10107    private InsertionPointCursorController mInsertionPointCursorController;
10108    private SelectionModifierCursorController mSelectionModifierCursorController;
10109    private ActionMode              mSelectionActionMode;
10110    private boolean                 mInsertionControllerEnabled;
10111    private boolean                 mSelectionControllerEnabled;
10112    private boolean                 mInBatchEditControllers;
10113
10114    // These are needed to desambiguate a long click. If the long click comes from ones of these, we
10115    // select from the current cursor position. Otherwise, select from long pressed position.
10116    private boolean                 mDPadCenterIsDown = false;
10117    private boolean                 mEnterKeyIsDown = false;
10118    private boolean                 mContextMenuTriggeredByKey = false;
10119    // Created once and shared by different CursorController helper methods.
10120    // Only one cursor controller is active at any time which prevent race conditions.
10121    private static Rect             sCursorControllerTempRect = new Rect();
10122
10123    private boolean                 mSelectAllOnFocus = false;
10124
10125    private int                     mGravity = Gravity.TOP | Gravity.START;
10126    private boolean                 mHorizontallyScrolling;
10127
10128    private int                     mAutoLinkMask;
10129    private boolean                 mLinksClickable = true;
10130
10131    private float                   mSpacingMult = 1;
10132    private float                   mSpacingAdd = 0;
10133    private boolean                 mTextIsSelectable = false;
10134
10135    private static final int        LINES = 1;
10136    private static final int        EMS = LINES;
10137    private static final int        PIXELS = 2;
10138
10139    private int                     mMaximum = Integer.MAX_VALUE;
10140    private int                     mMaxMode = LINES;
10141    private int                     mMinimum = 0;
10142    private int                     mMinMode = LINES;
10143
10144    private int                     mMaxWidth = Integer.MAX_VALUE;
10145    private int                     mMaxWidthMode = PIXELS;
10146    private int                     mMinWidth = 0;
10147    private int                     mMinWidthMode = PIXELS;
10148
10149    private boolean                 mSingleLine;
10150    private int                     mDesiredHeightAtMeasure = -1;
10151    private boolean                 mIncludePad = true;
10152
10153    // tmp primitives, so we don't alloc them on each draw
10154    private Path                    mHighlightPath;
10155    private boolean                 mHighlightPathBogus = true;
10156    private static final RectF      sTempRect = new RectF();
10157
10158    // XXX should be much larger
10159    private static final int        VERY_WIDE = 16384;
10160
10161    private static final int        BLINK = 500;
10162
10163    private static final int ANIMATED_SCROLL_GAP = 250;
10164    private long mLastScroll;
10165    private Scroller mScroller = null;
10166
10167    private BoringLayout.Metrics mBoring;
10168    private BoringLayout.Metrics mHintBoring;
10169
10170    private BoringLayout mSavedLayout, mSavedHintLayout;
10171
10172    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
10173    private InputFilter[] mFilters = NO_FILTERS;
10174    private static final Spanned EMPTY_SPANNED = new SpannedString("");
10175    private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20;
10176    // System wide time for last cut or copy action.
10177    private static long sLastCutOrCopyTime;
10178    // Used to highlight a word when it is corrected by the IME
10179    private CorrectionHighlighter mCorrectionHighlighter;
10180    // New state used to change background based on whether this TextView is multiline.
10181    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
10182}
10183