TextView.java revision 057a585fba01d92c38f27a8c080622dfd0c6f556 
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.ClipboardManager;
22import android.content.Context;
23import android.content.res.ColorStateList;
24import android.content.res.CompatibilityInfo;
25import android.content.res.Resources;
26import android.content.res.TypedArray;
27import android.content.res.XmlResourceParser;
28import android.graphics.Canvas;
29import android.graphics.Paint;
30import android.graphics.Path;
31import android.graphics.Rect;
32import android.graphics.RectF;
33import android.graphics.Typeface;
34import android.graphics.drawable.Drawable;
35import android.inputmethodservice.ExtractEditText;
36import android.os.Bundle;
37import android.os.Handler;
38import android.os.Message;
39import android.os.Parcel;
40import android.os.Parcelable;
41import android.os.SystemClock;
42import android.text.BoringLayout;
43import android.text.DynamicLayout;
44import android.text.Editable;
45import android.text.GetChars;
46import android.text.GraphicsOperations;
47import android.text.InputFilter;
48import android.text.InputType;
49import android.text.Layout;
50import android.text.ParcelableSpan;
51import android.text.Selection;
52import android.text.SpanWatcher;
53import android.text.Spannable;
54import android.text.SpannableString;
55import android.text.Spanned;
56import android.text.SpannedString;
57import android.text.StaticLayout;
58import android.text.TextDirectionHeuristic;
59import android.text.TextDirectionHeuristics;
60import android.text.TextPaint;
61import android.text.TextUtils;
62import android.text.TextUtils.TruncateAt;
63import android.text.TextWatcher;
64import android.text.method.AllCapsTransformationMethod;
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.TransformationMethod2;
80import android.text.method.WordIterator;
81import android.text.style.CharacterStyle;
82import android.text.style.ClickableSpan;
83import android.text.style.ParagraphStyle;
84import android.text.style.SpellCheckSpan;
85import android.text.style.SuggestionSpan;
86import android.text.style.URLSpan;
87import android.text.style.UpdateAppearance;
88import android.text.util.Linkify;
89import android.util.AttributeSet;
90import android.util.FloatMath;
91import android.util.Log;
92import android.util.TypedValue;
93import android.view.AccessibilityIterators.TextSegmentIterator;
94import android.view.ActionMode;
95import android.view.DragEvent;
96import android.view.Gravity;
97import android.view.HapticFeedbackConstants;
98import android.view.KeyCharacterMap;
99import android.view.KeyEvent;
100import android.view.Menu;
101import android.view.MenuItem;
102import android.view.MotionEvent;
103import android.view.View;
104import android.view.ViewConfiguration;
105import android.view.ViewDebug;
106import android.view.ViewGroup.LayoutParams;
107import android.view.ViewRootImpl;
108import android.view.ViewTreeObserver;
109import android.view.accessibility.AccessibilityEvent;
110import android.view.accessibility.AccessibilityManager;
111import android.view.accessibility.AccessibilityNodeInfo;
112import android.view.animation.AnimationUtils;
113import android.view.inputmethod.BaseInputConnection;
114import android.view.inputmethod.CompletionInfo;
115import android.view.inputmethod.CorrectionInfo;
116import android.view.inputmethod.EditorInfo;
117import android.view.inputmethod.ExtractedText;
118import android.view.inputmethod.ExtractedTextRequest;
119import android.view.inputmethod.InputConnection;
120import android.view.inputmethod.InputMethodManager;
121import android.view.textservice.SpellCheckerSubtype;
122import android.view.textservice.TextServicesManager;
123import android.widget.RemoteViews.RemoteView;
124
125import com.android.internal.util.FastMath;
126import com.android.internal.widget.EditableInputConnection;
127
128import org.xmlpull.v1.XmlPullParserException;
129
130import java.io.IOException;
131import java.lang.ref.WeakReference;
132import java.util.ArrayList;
133import java.util.Locale;
134
135/**
136 * Displays text to the user and optionally allows them to edit it.  A TextView
137 * is a complete text editor, however the basic class is configured to not
138 * allow editing; see {@link EditText} for a subclass that configures the text
139 * view for editing.
140 *
141 * <p>
142 * <b>XML attributes</b>
143 * <p>
144 * See {@link android.R.styleable#TextView TextView Attributes},
145 * {@link android.R.styleable#View View Attributes}
146 *
147 * @attr ref android.R.styleable#TextView_text
148 * @attr ref android.R.styleable#TextView_bufferType
149 * @attr ref android.R.styleable#TextView_hint
150 * @attr ref android.R.styleable#TextView_textColor
151 * @attr ref android.R.styleable#TextView_textColorHighlight
152 * @attr ref android.R.styleable#TextView_textColorHint
153 * @attr ref android.R.styleable#TextView_textAppearance
154 * @attr ref android.R.styleable#TextView_textColorLink
155 * @attr ref android.R.styleable#TextView_textSize
156 * @attr ref android.R.styleable#TextView_textScaleX
157 * @attr ref android.R.styleable#TextView_fontFamily
158 * @attr ref android.R.styleable#TextView_typeface
159 * @attr ref android.R.styleable#TextView_textStyle
160 * @attr ref android.R.styleable#TextView_cursorVisible
161 * @attr ref android.R.styleable#TextView_maxLines
162 * @attr ref android.R.styleable#TextView_maxHeight
163 * @attr ref android.R.styleable#TextView_lines
164 * @attr ref android.R.styleable#TextView_height
165 * @attr ref android.R.styleable#TextView_minLines
166 * @attr ref android.R.styleable#TextView_minHeight
167 * @attr ref android.R.styleable#TextView_maxEms
168 * @attr ref android.R.styleable#TextView_maxWidth
169 * @attr ref android.R.styleable#TextView_ems
170 * @attr ref android.R.styleable#TextView_width
171 * @attr ref android.R.styleable#TextView_minEms
172 * @attr ref android.R.styleable#TextView_minWidth
173 * @attr ref android.R.styleable#TextView_gravity
174 * @attr ref android.R.styleable#TextView_scrollHorizontally
175 * @attr ref android.R.styleable#TextView_password
176 * @attr ref android.R.styleable#TextView_singleLine
177 * @attr ref android.R.styleable#TextView_selectAllOnFocus
178 * @attr ref android.R.styleable#TextView_includeFontPadding
179 * @attr ref android.R.styleable#TextView_maxLength
180 * @attr ref android.R.styleable#TextView_shadowColor
181 * @attr ref android.R.styleable#TextView_shadowDx
182 * @attr ref android.R.styleable#TextView_shadowDy
183 * @attr ref android.R.styleable#TextView_shadowRadius
184 * @attr ref android.R.styleable#TextView_autoLink
185 * @attr ref android.R.styleable#TextView_linksClickable
186 * @attr ref android.R.styleable#TextView_numeric
187 * @attr ref android.R.styleable#TextView_digits
188 * @attr ref android.R.styleable#TextView_phoneNumber
189 * @attr ref android.R.styleable#TextView_inputMethod
190 * @attr ref android.R.styleable#TextView_capitalize
191 * @attr ref android.R.styleable#TextView_autoText
192 * @attr ref android.R.styleable#TextView_editable
193 * @attr ref android.R.styleable#TextView_freezesText
194 * @attr ref android.R.styleable#TextView_ellipsize
195 * @attr ref android.R.styleable#TextView_drawableTop
196 * @attr ref android.R.styleable#TextView_drawableBottom
197 * @attr ref android.R.styleable#TextView_drawableRight
198 * @attr ref android.R.styleable#TextView_drawableLeft
199 * @attr ref android.R.styleable#TextView_drawableStart
200 * @attr ref android.R.styleable#TextView_drawableEnd
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    // Enum for the "typeface" XML parameter.
218    // TODO: How can we get this from the XML instead of hardcoding it here?
219    private static final int SANS = 1;
220    private static final int SERIF = 2;
221    private static final int MONOSPACE = 3;
222
223    // Bitfield for the "numeric" XML parameter.
224    // TODO: How can we get this from the XML instead of hardcoding it here?
225    private static final int SIGNED = 2;
226    private static final int DECIMAL = 4;
227
228    /**
229     * Draw marquee text with fading edges as usual
230     */
231    private static final int MARQUEE_FADE_NORMAL = 0;
232
233    /**
234     * Draw marquee text as ellipsize end while inactive instead of with the fade.
235     * (Useful for devices where the fade can be expensive if overdone)
236     */
237    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
238
239    /**
240     * Draw marquee text with fading edges because it is currently active/animating.
241     */
242    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
243
244    private static final int LINES = 1;
245    private static final int EMS = LINES;
246    private static final int PIXELS = 2;
247
248    private static final RectF TEMP_RECTF = new RectF();
249
250    // XXX should be much larger
251    private static final int VERY_WIDE = 1024*1024;
252    private static final int ANIMATED_SCROLL_GAP = 250;
253
254    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
255    private static final Spanned EMPTY_SPANNED = new SpannedString("");
256
257    private static final int CHANGE_WATCHER_PRIORITY = 100;
258
259    // New state used to change background based on whether this TextView is multiline.
260    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
261
262    // System wide time for last cut or copy action.
263    static long LAST_CUT_OR_COPY_TIME;
264
265    private ColorStateList mTextColor;
266    private ColorStateList mHintTextColor;
267    private ColorStateList mLinkTextColor;
268    private int mCurTextColor;
269    private int mCurHintTextColor;
270    private boolean mFreezesText;
271    private boolean mTemporaryDetach;
272    private boolean mDispatchTemporaryDetach;
273
274    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
275    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
276
277    private float mShadowRadius, mShadowDx, mShadowDy;
278
279    private boolean mPreDrawRegistered;
280
281    private TextUtils.TruncateAt mEllipsize;
282
283    static class Drawables {
284        final Rect mCompoundRect = new Rect();
285        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight,
286                mDrawableStart, mDrawableEnd;
287        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
288                mDrawableSizeStart, mDrawableSizeEnd;
289        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
290                mDrawableHeightStart, mDrawableHeightEnd;
291        int mDrawablePadding;
292    }
293    Drawables mDrawables;
294
295    private CharWrapper mCharWrapper;
296
297    private Marquee mMarquee;
298    private boolean mRestartMarquee;
299
300    private int mMarqueeRepeatLimit = 3;
301
302    // The alignment to pass to Layout, or null if not resolved.
303    private Layout.Alignment mLayoutAlignment;
304
305    private boolean mResolvedDrawables;
306
307    /**
308     * On some devices the fading edges add a performance penalty if used
309     * extensively in the same layout. This mode indicates how the marquee
310     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
311     */
312    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
313
314    /**
315     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
316     * the layout that should be used when the mode switches.
317     */
318    private Layout mSavedMarqueeModeLayout;
319
320    @ViewDebug.ExportedProperty(category = "text")
321    private CharSequence mText;
322    private CharSequence mTransformed;
323    private BufferType mBufferType = BufferType.NORMAL;
324
325    private CharSequence mHint;
326    private Layout mHintLayout;
327
328    private MovementMethod mMovement;
329
330    private TransformationMethod mTransformation;
331    private boolean mAllowTransformationLengthChange;
332    private ChangeWatcher mChangeWatcher;
333
334    private ArrayList<TextWatcher> mListeners;
335
336    // display attributes
337    private final TextPaint mTextPaint;
338    private boolean mUserSetTextScaleX;
339    private Layout mLayout;
340
341    private int mGravity = Gravity.TOP | Gravity.START;
342    private boolean mHorizontallyScrolling;
343
344    private int mAutoLinkMask;
345    private boolean mLinksClickable = true;
346
347    private float mSpacingMult = 1.0f;
348    private float mSpacingAdd = 0.0f;
349
350    private int mMaximum = Integer.MAX_VALUE;
351    private int mMaxMode = LINES;
352    private int mMinimum = 0;
353    private int mMinMode = LINES;
354
355    private int mOldMaximum = mMaximum;
356    private int mOldMaxMode = mMaxMode;
357
358    private int mMaxWidth = Integer.MAX_VALUE;
359    private int mMaxWidthMode = PIXELS;
360    private int mMinWidth = 0;
361    private int mMinWidthMode = PIXELS;
362
363    private boolean mSingleLine;
364    private int mDesiredHeightAtMeasure = -1;
365    private boolean mIncludePad = true;
366
367    // tmp primitives, so we don't alloc them on each draw
368    private Rect mTempRect;
369    private long mLastScroll;
370    private Scroller mScroller;
371
372    private BoringLayout.Metrics mBoring, mHintBoring;
373    private BoringLayout mSavedLayout, mSavedHintLayout;
374
375    private TextDirectionHeuristic mTextDir;
376
377    private InputFilter[] mFilters = NO_FILTERS;
378
379    // It is possible to have a selection even when mEditor is null (programmatically set, like when
380    // a link is pressed). These highlight-related fields do not go in mEditor.
381    int mHighlightColor = 0x6633B5E5;
382    private Path mHighlightPath;
383    private final Paint mHighlightPaint;
384    private boolean mHighlightPathBogus = true;
385
386    // Although these fields are specific to editable text, they are not added to Editor because
387    // they are defined by the TextView's style and are theme-dependent.
388    int mCursorDrawableRes;
389    // These four fields, could be moved to Editor, since we know their default values and we
390    // could condition the creation of the Editor to a non standard value. This is however
391    // brittle since the hardcoded values here (such as
392    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
393    // default style is modified.
394    int mTextSelectHandleLeftRes;
395    int mTextSelectHandleRightRes;
396    int mTextSelectHandleRes;
397    int mTextEditSuggestionItemLayout;
398
399    /**
400     * EditText specific data, created on demand when one of the Editor fields is used.
401     * See {@link #createEditorIfNeeded()}.
402     */
403    private Editor mEditor;
404
405    /*
406     * Kick-start the font cache for the zygote process (to pay the cost of
407     * initializing freetype for our default font only once).
408     */
409    static {
410        Paint p = new Paint();
411        p.setAntiAlias(true);
412        // We don't care about the result, just the side-effect of measuring.
413        p.measureText("H");
414    }
415
416    /**
417     * Interface definition for a callback to be invoked when an action is
418     * performed on the editor.
419     */
420    public interface OnEditorActionListener {
421        /**
422         * Called when an action is being performed.
423         *
424         * @param v The view that was clicked.
425         * @param actionId Identifier of the action.  This will be either the
426         * identifier you supplied, or {@link EditorInfo#IME_NULL
427         * EditorInfo.IME_NULL} if being called due to the enter key
428         * being pressed.
429         * @param event If triggered by an enter key, this is the event;
430         * otherwise, this is null.
431         * @return Return true if you have consumed the action, else false.
432         */
433        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
434    }
435
436    public TextView(Context context) {
437        this(context, null);
438    }
439
440    public TextView(Context context, AttributeSet attrs) {
441        this(context, attrs, com.android.internal.R.attr.textViewStyle);
442    }
443
444    @SuppressWarnings("deprecation")
445    public TextView(Context context, AttributeSet attrs, int defStyle) {
446        super(context, attrs, defStyle);
447        mText = "";
448
449        final Resources res = getResources();
450        final CompatibilityInfo compat = res.getCompatibilityInfo();
451
452        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
453        mTextPaint.density = res.getDisplayMetrics().density;
454        mTextPaint.setCompatibilityScaling(compat.applicationScale);
455
456        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
457        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
458
459        mMovement = getDefaultMovementMethod();
460
461        mTransformation = null;
462
463        int textColorHighlight = 0;
464        ColorStateList textColor = null;
465        ColorStateList textColorHint = null;
466        ColorStateList textColorLink = null;
467        int textSize = 15;
468        String fontFamily = null;
469        int typefaceIndex = -1;
470        int styleIndex = -1;
471        boolean allCaps = false;
472
473        final Resources.Theme theme = context.getTheme();
474
475        /*
476         * Look the appearance up without checking first if it exists because
477         * almost every TextView has one and it greatly simplifies the logic
478         * to be able to parse the appearance first and then let specific tags
479         * for this View override it.
480         */
481        TypedArray a = theme.obtainStyledAttributes(
482                    attrs, com.android.internal.R.styleable.TextViewAppearance, defStyle, 0);
483        TypedArray appearance = null;
484        int ap = a.getResourceId(
485                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
486        a.recycle();
487        if (ap != -1) {
488            appearance = theme.obtainStyledAttributes(
489                    ap, com.android.internal.R.styleable.TextAppearance);
490        }
491        if (appearance != null) {
492            int n = appearance.getIndexCount();
493            for (int i = 0; i < n; i++) {
494                int attr = appearance.getIndex(i);
495
496                switch (attr) {
497                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
498                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
499                    break;
500
501                case com.android.internal.R.styleable.TextAppearance_textColor:
502                    textColor = appearance.getColorStateList(attr);
503                    break;
504
505                case com.android.internal.R.styleable.TextAppearance_textColorHint:
506                    textColorHint = appearance.getColorStateList(attr);
507                    break;
508
509                case com.android.internal.R.styleable.TextAppearance_textColorLink:
510                    textColorLink = appearance.getColorStateList(attr);
511                    break;
512
513                case com.android.internal.R.styleable.TextAppearance_textSize:
514                    textSize = appearance.getDimensionPixelSize(attr, textSize);
515                    break;
516
517                case com.android.internal.R.styleable.TextAppearance_typeface:
518                    typefaceIndex = appearance.getInt(attr, -1);
519                    break;
520
521                case com.android.internal.R.styleable.TextAppearance_fontFamily:
522                    fontFamily = appearance.getString(attr);
523                    break;
524
525                case com.android.internal.R.styleable.TextAppearance_textStyle:
526                    styleIndex = appearance.getInt(attr, -1);
527                    break;
528
529                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
530                    allCaps = appearance.getBoolean(attr, false);
531                    break;
532                }
533            }
534
535            appearance.recycle();
536        }
537
538        boolean editable = getDefaultEditable();
539        CharSequence inputMethod = null;
540        int numeric = 0;
541        CharSequence digits = null;
542        boolean phone = false;
543        boolean autotext = false;
544        int autocap = -1;
545        int buffertype = 0;
546        boolean selectallonfocus = false;
547        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
548            drawableBottom = null, drawableStart = null, drawableEnd = null;
549        int drawablePadding = 0;
550        int ellipsize = -1;
551        boolean singleLine = false;
552        int maxlength = -1;
553        CharSequence text = "";
554        CharSequence hint = null;
555        int shadowcolor = 0;
556        float dx = 0, dy = 0, r = 0;
557        boolean password = false;
558        int inputType = EditorInfo.TYPE_NULL;
559
560        a = theme.obtainStyledAttributes(
561                    attrs, com.android.internal.R.styleable.TextView, defStyle, 0);
562
563        int n = a.getIndexCount();
564        for (int i = 0; i < n; i++) {
565            int attr = a.getIndex(i);
566
567            switch (attr) {
568            case com.android.internal.R.styleable.TextView_editable:
569                editable = a.getBoolean(attr, editable);
570                break;
571
572            case com.android.internal.R.styleable.TextView_inputMethod:
573                inputMethod = a.getText(attr);
574                break;
575
576            case com.android.internal.R.styleable.TextView_numeric:
577                numeric = a.getInt(attr, numeric);
578                break;
579
580            case com.android.internal.R.styleable.TextView_digits:
581                digits = a.getText(attr);
582                break;
583
584            case com.android.internal.R.styleable.TextView_phoneNumber:
585                phone = a.getBoolean(attr, phone);
586                break;
587
588            case com.android.internal.R.styleable.TextView_autoText:
589                autotext = a.getBoolean(attr, autotext);
590                break;
591
592            case com.android.internal.R.styleable.TextView_capitalize:
593                autocap = a.getInt(attr, autocap);
594                break;
595
596            case com.android.internal.R.styleable.TextView_bufferType:
597                buffertype = a.getInt(attr, buffertype);
598                break;
599
600            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
601                selectallonfocus = a.getBoolean(attr, selectallonfocus);
602                break;
603
604            case com.android.internal.R.styleable.TextView_autoLink:
605                mAutoLinkMask = a.getInt(attr, 0);
606                break;
607
608            case com.android.internal.R.styleable.TextView_linksClickable:
609                mLinksClickable = a.getBoolean(attr, true);
610                break;
611
612            case com.android.internal.R.styleable.TextView_drawableLeft:
613                drawableLeft = a.getDrawable(attr);
614                break;
615
616            case com.android.internal.R.styleable.TextView_drawableTop:
617                drawableTop = a.getDrawable(attr);
618                break;
619
620            case com.android.internal.R.styleable.TextView_drawableRight:
621                drawableRight = a.getDrawable(attr);
622                break;
623
624            case com.android.internal.R.styleable.TextView_drawableBottom:
625                drawableBottom = a.getDrawable(attr);
626                break;
627
628            case com.android.internal.R.styleable.TextView_drawableStart:
629                drawableStart = a.getDrawable(attr);
630                break;
631
632            case com.android.internal.R.styleable.TextView_drawableEnd:
633                drawableEnd = a.getDrawable(attr);
634                break;
635
636            case com.android.internal.R.styleable.TextView_drawablePadding:
637                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
638                break;
639
640            case com.android.internal.R.styleable.TextView_maxLines:
641                setMaxLines(a.getInt(attr, -1));
642                break;
643
644            case com.android.internal.R.styleable.TextView_maxHeight:
645                setMaxHeight(a.getDimensionPixelSize(attr, -1));
646                break;
647
648            case com.android.internal.R.styleable.TextView_lines:
649                setLines(a.getInt(attr, -1));
650                break;
651
652            case com.android.internal.R.styleable.TextView_height:
653                setHeight(a.getDimensionPixelSize(attr, -1));
654                break;
655
656            case com.android.internal.R.styleable.TextView_minLines:
657                setMinLines(a.getInt(attr, -1));
658                break;
659
660            case com.android.internal.R.styleable.TextView_minHeight:
661                setMinHeight(a.getDimensionPixelSize(attr, -1));
662                break;
663
664            case com.android.internal.R.styleable.TextView_maxEms:
665                setMaxEms(a.getInt(attr, -1));
666                break;
667
668            case com.android.internal.R.styleable.TextView_maxWidth:
669                setMaxWidth(a.getDimensionPixelSize(attr, -1));
670                break;
671
672            case com.android.internal.R.styleable.TextView_ems:
673                setEms(a.getInt(attr, -1));
674                break;
675
676            case com.android.internal.R.styleable.TextView_width:
677                setWidth(a.getDimensionPixelSize(attr, -1));
678                break;
679
680            case com.android.internal.R.styleable.TextView_minEms:
681                setMinEms(a.getInt(attr, -1));
682                break;
683
684            case com.android.internal.R.styleable.TextView_minWidth:
685                setMinWidth(a.getDimensionPixelSize(attr, -1));
686                break;
687
688            case com.android.internal.R.styleable.TextView_gravity:
689                setGravity(a.getInt(attr, -1));
690                break;
691
692            case com.android.internal.R.styleable.TextView_hint:
693                hint = a.getText(attr);
694                break;
695
696            case com.android.internal.R.styleable.TextView_text:
697                text = a.getText(attr);
698                break;
699
700            case com.android.internal.R.styleable.TextView_scrollHorizontally:
701                if (a.getBoolean(attr, false)) {
702                    setHorizontallyScrolling(true);
703                }
704                break;
705
706            case com.android.internal.R.styleable.TextView_singleLine:
707                singleLine = a.getBoolean(attr, singleLine);
708                break;
709
710            case com.android.internal.R.styleable.TextView_ellipsize:
711                ellipsize = a.getInt(attr, ellipsize);
712                break;
713
714            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
715                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
716                break;
717
718            case com.android.internal.R.styleable.TextView_includeFontPadding:
719                if (!a.getBoolean(attr, true)) {
720                    setIncludeFontPadding(false);
721                }
722                break;
723
724            case com.android.internal.R.styleable.TextView_cursorVisible:
725                if (!a.getBoolean(attr, true)) {
726                    setCursorVisible(false);
727                }
728                break;
729
730            case com.android.internal.R.styleable.TextView_maxLength:
731                maxlength = a.getInt(attr, -1);
732                break;
733
734            case com.android.internal.R.styleable.TextView_textScaleX:
735                setTextScaleX(a.getFloat(attr, 1.0f));
736                break;
737
738            case com.android.internal.R.styleable.TextView_freezesText:
739                mFreezesText = a.getBoolean(attr, false);
740                break;
741
742            case com.android.internal.R.styleable.TextView_shadowColor:
743                shadowcolor = a.getInt(attr, 0);
744                break;
745
746            case com.android.internal.R.styleable.TextView_shadowDx:
747                dx = a.getFloat(attr, 0);
748                break;
749
750            case com.android.internal.R.styleable.TextView_shadowDy:
751                dy = a.getFloat(attr, 0);
752                break;
753
754            case com.android.internal.R.styleable.TextView_shadowRadius:
755                r = a.getFloat(attr, 0);
756                break;
757
758            case com.android.internal.R.styleable.TextView_enabled:
759                setEnabled(a.getBoolean(attr, isEnabled()));
760                break;
761
762            case com.android.internal.R.styleable.TextView_textColorHighlight:
763                textColorHighlight = a.getColor(attr, textColorHighlight);
764                break;
765
766            case com.android.internal.R.styleable.TextView_textColor:
767                textColor = a.getColorStateList(attr);
768                break;
769
770            case com.android.internal.R.styleable.TextView_textColorHint:
771                textColorHint = a.getColorStateList(attr);
772                break;
773
774            case com.android.internal.R.styleable.TextView_textColorLink:
775                textColorLink = a.getColorStateList(attr);
776                break;
777
778            case com.android.internal.R.styleable.TextView_textSize:
779                textSize = a.getDimensionPixelSize(attr, textSize);
780                break;
781
782            case com.android.internal.R.styleable.TextView_typeface:
783                typefaceIndex = a.getInt(attr, typefaceIndex);
784                break;
785
786            case com.android.internal.R.styleable.TextView_textStyle:
787                styleIndex = a.getInt(attr, styleIndex);
788                break;
789
790            case com.android.internal.R.styleable.TextView_fontFamily:
791                fontFamily = a.getString(attr);
792                break;
793
794            case com.android.internal.R.styleable.TextView_password:
795                password = a.getBoolean(attr, password);
796                break;
797
798            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
799                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
800                break;
801
802            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
803                mSpacingMult = a.getFloat(attr, mSpacingMult);
804                break;
805
806            case com.android.internal.R.styleable.TextView_inputType:
807                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
808                break;
809
810            case com.android.internal.R.styleable.TextView_imeOptions:
811                createEditorIfNeeded();
812                mEditor.createInputContentTypeIfNeeded();
813                mEditor.mInputContentType.imeOptions = a.getInt(attr,
814                        mEditor.mInputContentType.imeOptions);
815                break;
816
817            case com.android.internal.R.styleable.TextView_imeActionLabel:
818                createEditorIfNeeded();
819                mEditor.createInputContentTypeIfNeeded();
820                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
821                break;
822
823            case com.android.internal.R.styleable.TextView_imeActionId:
824                createEditorIfNeeded();
825                mEditor.createInputContentTypeIfNeeded();
826                mEditor.mInputContentType.imeActionId = a.getInt(attr,
827                        mEditor.mInputContentType.imeActionId);
828                break;
829
830            case com.android.internal.R.styleable.TextView_privateImeOptions:
831                setPrivateImeOptions(a.getString(attr));
832                break;
833
834            case com.android.internal.R.styleable.TextView_editorExtras:
835                try {
836                    setInputExtras(a.getResourceId(attr, 0));
837                } catch (XmlPullParserException e) {
838                    Log.w(LOG_TAG, "Failure reading input extras", e);
839                } catch (IOException e) {
840                    Log.w(LOG_TAG, "Failure reading input extras", e);
841                }
842                break;
843
844            case com.android.internal.R.styleable.TextView_textCursorDrawable:
845                mCursorDrawableRes = a.getResourceId(attr, 0);
846                break;
847
848            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
849                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
850                break;
851
852            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
853                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
854                break;
855
856            case com.android.internal.R.styleable.TextView_textSelectHandle:
857                mTextSelectHandleRes = a.getResourceId(attr, 0);
858                break;
859
860            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
861                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
862                break;
863
864            case com.android.internal.R.styleable.TextView_textIsSelectable:
865                setTextIsSelectable(a.getBoolean(attr, false));
866                break;
867
868            case com.android.internal.R.styleable.TextView_textAllCaps:
869                allCaps = a.getBoolean(attr, false);
870                break;
871            }
872        }
873        a.recycle();
874
875        BufferType bufferType = BufferType.EDITABLE;
876
877        final int variation =
878                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
879        final boolean passwordInputType = variation
880                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
881        final boolean webPasswordInputType = variation
882                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
883        final boolean numberPasswordInputType = variation
884                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
885
886        if (inputMethod != null) {
887            Class<?> c;
888
889            try {
890                c = Class.forName(inputMethod.toString());
891            } catch (ClassNotFoundException ex) {
892                throw new RuntimeException(ex);
893            }
894
895            try {
896                createEditorIfNeeded();
897                mEditor.mKeyListener = (KeyListener) c.newInstance();
898            } catch (InstantiationException ex) {
899                throw new RuntimeException(ex);
900            } catch (IllegalAccessException ex) {
901                throw new RuntimeException(ex);
902            }
903            try {
904                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
905                        ? inputType
906                        : mEditor.mKeyListener.getInputType();
907            } catch (IncompatibleClassChangeError e) {
908                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
909            }
910        } else if (digits != null) {
911            createEditorIfNeeded();
912            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
913            // If no input type was specified, we will default to generic
914            // text, since we can't tell the IME about the set of digits
915            // that was selected.
916            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
917                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
918        } else if (inputType != EditorInfo.TYPE_NULL) {
919            setInputType(inputType, true);
920            // If set, the input type overrides what was set using the deprecated singleLine flag.
921            singleLine = !isMultilineInputType(inputType);
922        } else if (phone) {
923            createEditorIfNeeded();
924            mEditor.mKeyListener = DialerKeyListener.getInstance();
925            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
926        } else if (numeric != 0) {
927            createEditorIfNeeded();
928            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
929                                                   (numeric & DECIMAL) != 0);
930            inputType = EditorInfo.TYPE_CLASS_NUMBER;
931            if ((numeric & SIGNED) != 0) {
932                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
933            }
934            if ((numeric & DECIMAL) != 0) {
935                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
936            }
937            mEditor.mInputType = inputType;
938        } else if (autotext || autocap != -1) {
939            TextKeyListener.Capitalize cap;
940
941            inputType = EditorInfo.TYPE_CLASS_TEXT;
942
943            switch (autocap) {
944            case 1:
945                cap = TextKeyListener.Capitalize.SENTENCES;
946                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
947                break;
948
949            case 2:
950                cap = TextKeyListener.Capitalize.WORDS;
951                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
952                break;
953
954            case 3:
955                cap = TextKeyListener.Capitalize.CHARACTERS;
956                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
957                break;
958
959            default:
960                cap = TextKeyListener.Capitalize.NONE;
961                break;
962            }
963
964            createEditorIfNeeded();
965            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
966            mEditor.mInputType = inputType;
967        } else if (isTextSelectable()) {
968            // Prevent text changes from keyboard.
969            if (mEditor != null) {
970                mEditor.mKeyListener = null;
971                mEditor.mInputType = EditorInfo.TYPE_NULL;
972            }
973            bufferType = BufferType.SPANNABLE;
974            // So that selection can be changed using arrow keys and touch is handled.
975            setMovementMethod(ArrowKeyMovementMethod.getInstance());
976        } else if (editable) {
977            createEditorIfNeeded();
978            mEditor.mKeyListener = TextKeyListener.getInstance();
979            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
980        } else {
981            if (mEditor != null) mEditor.mKeyListener = null;
982
983            switch (buffertype) {
984                case 0:
985                    bufferType = BufferType.NORMAL;
986                    break;
987                case 1:
988                    bufferType = BufferType.SPANNABLE;
989                    break;
990                case 2:
991                    bufferType = BufferType.EDITABLE;
992                    break;
993            }
994        }
995
996        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
997                webPasswordInputType, numberPasswordInputType);
998
999        if (selectallonfocus) {
1000            createEditorIfNeeded();
1001            mEditor.mSelectAllOnFocus = true;
1002
1003            if (bufferType == BufferType.NORMAL)
1004                bufferType = BufferType.SPANNABLE;
1005        }
1006
1007        setCompoundDrawablesWithIntrinsicBounds(
1008            drawableLeft, drawableTop, drawableRight, drawableBottom);
1009        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1010        setCompoundDrawablePadding(drawablePadding);
1011
1012        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1013        // of lines of height are unchanged for multi-line TextViews.
1014        setInputTypeSingleLine(singleLine);
1015        applySingleLine(singleLine, singleLine, singleLine);
1016
1017        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1018                ellipsize = 3; // END
1019        }
1020
1021        switch (ellipsize) {
1022            case 1:
1023                setEllipsize(TextUtils.TruncateAt.START);
1024                break;
1025            case 2:
1026                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1027                break;
1028            case 3:
1029                setEllipsize(TextUtils.TruncateAt.END);
1030                break;
1031            case 4:
1032                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1033                    setHorizontalFadingEdgeEnabled(true);
1034                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1035                } else {
1036                    setHorizontalFadingEdgeEnabled(false);
1037                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1038                }
1039                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1040                break;
1041        }
1042
1043        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1044        setHintTextColor(textColorHint);
1045        setLinkTextColor(textColorLink);
1046        if (textColorHighlight != 0) {
1047            setHighlightColor(textColorHighlight);
1048        }
1049        setRawTextSize(textSize);
1050
1051        if (allCaps) {
1052            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1053        }
1054
1055        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1056            setTransformationMethod(PasswordTransformationMethod.getInstance());
1057            typefaceIndex = MONOSPACE;
1058        } else if (mEditor != null &&
1059                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1060                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1061            typefaceIndex = MONOSPACE;
1062        }
1063
1064        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1065
1066        if (shadowcolor != 0) {
1067            setShadowLayer(r, dx, dy, shadowcolor);
1068        }
1069
1070        if (maxlength >= 0) {
1071            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1072        } else {
1073            setFilters(NO_FILTERS);
1074        }
1075
1076        setText(text, bufferType);
1077        if (hint != null) setHint(hint);
1078
1079        /*
1080         * Views are not normally focusable unless specified to be.
1081         * However, TextViews that have input or movement methods *are*
1082         * focusable by default.
1083         */
1084        a = context.obtainStyledAttributes(attrs,
1085                                           com.android.internal.R.styleable.View,
1086                                           defStyle, 0);
1087
1088        boolean focusable = mMovement != null || getKeyListener() != null;
1089        boolean clickable = focusable;
1090        boolean longClickable = focusable;
1091
1092        n = a.getIndexCount();
1093        for (int i = 0; i < n; i++) {
1094            int attr = a.getIndex(i);
1095
1096            switch (attr) {
1097            case com.android.internal.R.styleable.View_focusable:
1098                focusable = a.getBoolean(attr, focusable);
1099                break;
1100
1101            case com.android.internal.R.styleable.View_clickable:
1102                clickable = a.getBoolean(attr, clickable);
1103                break;
1104
1105            case com.android.internal.R.styleable.View_longClickable:
1106                longClickable = a.getBoolean(attr, longClickable);
1107                break;
1108            }
1109        }
1110        a.recycle();
1111
1112        setFocusable(focusable);
1113        setClickable(clickable);
1114        setLongClickable(longClickable);
1115
1116        if (mEditor != null) mEditor.prepareCursorControllers();
1117
1118        // If not explicitly specified this view is important for accessibility.
1119        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1120            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1121        }
1122    }
1123
1124    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1125        Typeface tf = null;
1126        if (familyName != null) {
1127            tf = Typeface.create(familyName, styleIndex);
1128            if (tf != null) {
1129                setTypeface(tf);
1130                return;
1131            }
1132        }
1133        switch (typefaceIndex) {
1134            case SANS:
1135                tf = Typeface.SANS_SERIF;
1136                break;
1137
1138            case SERIF:
1139                tf = Typeface.SERIF;
1140                break;
1141
1142            case MONOSPACE:
1143                tf = Typeface.MONOSPACE;
1144                break;
1145        }
1146
1147        setTypeface(tf, styleIndex);
1148    }
1149
1150    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1151        boolean hasRelativeDrawables = (start != null) || (end != null);
1152        if (hasRelativeDrawables) {
1153            Drawables dr = mDrawables;
1154            if (dr == null) {
1155                mDrawables = dr = new Drawables();
1156            }
1157            final Rect compoundRect = dr.mCompoundRect;
1158            int[] state = getDrawableState();
1159            if (start != null) {
1160                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1161                start.setState(state);
1162                start.copyBounds(compoundRect);
1163                start.setCallback(this);
1164
1165                dr.mDrawableStart = start;
1166                dr.mDrawableSizeStart = compoundRect.width();
1167                dr.mDrawableHeightStart = compoundRect.height();
1168            } else {
1169                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1170            }
1171            if (end != null) {
1172                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1173                end.setState(state);
1174                end.copyBounds(compoundRect);
1175                end.setCallback(this);
1176
1177                dr.mDrawableEnd = end;
1178                dr.mDrawableSizeEnd = compoundRect.width();
1179                dr.mDrawableHeightEnd = compoundRect.height();
1180            } else {
1181                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1182            }
1183        }
1184    }
1185
1186    @Override
1187    public void setEnabled(boolean enabled) {
1188        if (enabled == isEnabled()) {
1189            return;
1190        }
1191
1192        if (!enabled) {
1193            // Hide the soft input if the currently active TextView is disabled
1194            InputMethodManager imm = InputMethodManager.peekInstance();
1195            if (imm != null && imm.isActive(this)) {
1196                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1197            }
1198        }
1199
1200        super.setEnabled(enabled);
1201
1202        if (enabled) {
1203            // Make sure IME is updated with current editor info.
1204            InputMethodManager imm = InputMethodManager.peekInstance();
1205            if (imm != null) imm.restartInput(this);
1206        }
1207
1208        // Will change text color
1209        if (mEditor != null) {
1210            mEditor.invalidateTextDisplayList();
1211            mEditor.prepareCursorControllers();
1212
1213            // start or stop the cursor blinking as appropriate
1214            mEditor.makeBlink();
1215        }
1216    }
1217
1218    /**
1219     * Sets the typeface and style in which the text should be displayed,
1220     * and turns on the fake bold and italic bits in the Paint if the
1221     * Typeface that you provided does not have all the bits in the
1222     * style that you specified.
1223     *
1224     * @attr ref android.R.styleable#TextView_typeface
1225     * @attr ref android.R.styleable#TextView_textStyle
1226     */
1227    public void setTypeface(Typeface tf, int style) {
1228        if (style > 0) {
1229            if (tf == null) {
1230                tf = Typeface.defaultFromStyle(style);
1231            } else {
1232                tf = Typeface.create(tf, style);
1233            }
1234
1235            setTypeface(tf);
1236            // now compute what (if any) algorithmic styling is needed
1237            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1238            int need = style & ~typefaceStyle;
1239            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1240            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1241        } else {
1242            mTextPaint.setFakeBoldText(false);
1243            mTextPaint.setTextSkewX(0);
1244            setTypeface(tf);
1245        }
1246    }
1247
1248    /**
1249     * Subclasses override this to specify that they have a KeyListener
1250     * by default even if not specifically called for in the XML options.
1251     */
1252    protected boolean getDefaultEditable() {
1253        return false;
1254    }
1255
1256    /**
1257     * Subclasses override this to specify a default movement method.
1258     */
1259    protected MovementMethod getDefaultMovementMethod() {
1260        return null;
1261    }
1262
1263    /**
1264     * Return the text the TextView is displaying. If setText() was called with
1265     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1266     * the return value from this method to Spannable or Editable, respectively.
1267     *
1268     * Note: The content of the return value should not be modified. If you want
1269     * a modifiable one, you should make your own copy first.
1270     *
1271     * @attr ref android.R.styleable#TextView_text
1272     */
1273    @ViewDebug.CapturedViewProperty
1274    public CharSequence getText() {
1275        return mText;
1276    }
1277
1278    /**
1279     * Returns the length, in characters, of the text managed by this TextView
1280     */
1281    public int length() {
1282        return mText.length();
1283    }
1284
1285    /**
1286     * Return the text the TextView is displaying as an Editable object.  If
1287     * the text is not editable, null is returned.
1288     *
1289     * @see #getText
1290     */
1291    public Editable getEditableText() {
1292        return (mText instanceof Editable) ? (Editable)mText : null;
1293    }
1294
1295    /**
1296     * @return the height of one standard line in pixels.  Note that markup
1297     * within the text can cause individual lines to be taller or shorter
1298     * than this height, and the layout may contain additional first-
1299     * or last-line padding.
1300     */
1301    public int getLineHeight() {
1302        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1303    }
1304
1305    /**
1306     * @return the Layout that is currently being used to display the text.
1307     * This can be null if the text or width has recently changes.
1308     */
1309    public final Layout getLayout() {
1310        return mLayout;
1311    }
1312
1313    /**
1314     * @return the current key listener for this TextView.
1315     * This will frequently be null for non-EditText TextViews.
1316     *
1317     * @attr ref android.R.styleable#TextView_numeric
1318     * @attr ref android.R.styleable#TextView_digits
1319     * @attr ref android.R.styleable#TextView_phoneNumber
1320     * @attr ref android.R.styleable#TextView_inputMethod
1321     * @attr ref android.R.styleable#TextView_capitalize
1322     * @attr ref android.R.styleable#TextView_autoText
1323     */
1324    public final KeyListener getKeyListener() {
1325        return mEditor == null ? null : mEditor.mKeyListener;
1326    }
1327
1328    /**
1329     * Sets the key listener to be used with this TextView.  This can be null
1330     * to disallow user input.  Note that this method has significant and
1331     * subtle interactions with soft keyboards and other input method:
1332     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1333     * for important details.  Calling this method will replace the current
1334     * content type of the text view with the content type returned by the
1335     * key listener.
1336     * <p>
1337     * Be warned that if you want a TextView with a key listener or movement
1338     * method not to be focusable, or if you want a TextView without a
1339     * key listener or movement method to be focusable, you must call
1340     * {@link #setFocusable} again after calling this to get the focusability
1341     * back the way you want it.
1342     *
1343     * @attr ref android.R.styleable#TextView_numeric
1344     * @attr ref android.R.styleable#TextView_digits
1345     * @attr ref android.R.styleable#TextView_phoneNumber
1346     * @attr ref android.R.styleable#TextView_inputMethod
1347     * @attr ref android.R.styleable#TextView_capitalize
1348     * @attr ref android.R.styleable#TextView_autoText
1349     */
1350    public void setKeyListener(KeyListener input) {
1351        setKeyListenerOnly(input);
1352        fixFocusableAndClickableSettings();
1353
1354        if (input != null) {
1355            createEditorIfNeeded();
1356            try {
1357                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1358            } catch (IncompatibleClassChangeError e) {
1359                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1360            }
1361            // Change inputType, without affecting transformation.
1362            // No need to applySingleLine since mSingleLine is unchanged.
1363            setInputTypeSingleLine(mSingleLine);
1364        } else {
1365            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1366        }
1367
1368        InputMethodManager imm = InputMethodManager.peekInstance();
1369        if (imm != null) imm.restartInput(this);
1370    }
1371
1372    private void setKeyListenerOnly(KeyListener input) {
1373        if (mEditor == null && input == null) return; // null is the default value
1374
1375        createEditorIfNeeded();
1376        if (mEditor.mKeyListener != input) {
1377            mEditor.mKeyListener = input;
1378            if (input != null && !(mText instanceof Editable)) {
1379                setText(mText);
1380            }
1381
1382            setFilters((Editable) mText, mFilters);
1383        }
1384    }
1385
1386    /**
1387     * @return the movement method being used for this TextView.
1388     * This will frequently be null for non-EditText TextViews.
1389     */
1390    public final MovementMethod getMovementMethod() {
1391        return mMovement;
1392    }
1393
1394    /**
1395     * Sets the movement method (arrow key handler) to be used for
1396     * this TextView.  This can be null to disallow using the arrow keys
1397     * to move the cursor or scroll the view.
1398     * <p>
1399     * Be warned that if you want a TextView with a key listener or movement
1400     * method not to be focusable, or if you want a TextView without a
1401     * key listener or movement method to be focusable, you must call
1402     * {@link #setFocusable} again after calling this to get the focusability
1403     * back the way you want it.
1404     */
1405    public final void setMovementMethod(MovementMethod movement) {
1406        if (mMovement != movement) {
1407            mMovement = movement;
1408
1409            if (movement != null && !(mText instanceof Spannable)) {
1410                setText(mText);
1411            }
1412
1413            fixFocusableAndClickableSettings();
1414
1415            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1416            // mMovement
1417            if (mEditor != null) mEditor.prepareCursorControllers();
1418        }
1419    }
1420
1421    private void fixFocusableAndClickableSettings() {
1422        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1423            setFocusable(true);
1424            setClickable(true);
1425            setLongClickable(true);
1426        } else {
1427            setFocusable(false);
1428            setClickable(false);
1429            setLongClickable(false);
1430        }
1431    }
1432
1433    /**
1434     * @return the current transformation method for this TextView.
1435     * This will frequently be null except for single-line and password
1436     * fields.
1437     *
1438     * @attr ref android.R.styleable#TextView_password
1439     * @attr ref android.R.styleable#TextView_singleLine
1440     */
1441    public final TransformationMethod getTransformationMethod() {
1442        return mTransformation;
1443    }
1444
1445    /**
1446     * Sets the transformation that is applied to the text that this
1447     * TextView is displaying.
1448     *
1449     * @attr ref android.R.styleable#TextView_password
1450     * @attr ref android.R.styleable#TextView_singleLine
1451     */
1452    public final void setTransformationMethod(TransformationMethod method) {
1453        if (method == mTransformation) {
1454            // Avoid the setText() below if the transformation is
1455            // the same.
1456            return;
1457        }
1458        if (mTransformation != null) {
1459            if (mText instanceof Spannable) {
1460                ((Spannable) mText).removeSpan(mTransformation);
1461            }
1462        }
1463
1464        mTransformation = method;
1465
1466        if (method instanceof TransformationMethod2) {
1467            TransformationMethod2 method2 = (TransformationMethod2) method;
1468            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1469            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1470        } else {
1471            mAllowTransformationLengthChange = false;
1472        }
1473
1474        setText(mText);
1475    }
1476
1477    /**
1478     * Returns the top padding of the view, plus space for the top
1479     * Drawable if any.
1480     */
1481    public int getCompoundPaddingTop() {
1482        final Drawables dr = mDrawables;
1483        if (dr == null || dr.mDrawableTop == null) {
1484            return mPaddingTop;
1485        } else {
1486            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1487        }
1488    }
1489
1490    /**
1491     * Returns the bottom padding of the view, plus space for the bottom
1492     * Drawable if any.
1493     */
1494    public int getCompoundPaddingBottom() {
1495        final Drawables dr = mDrawables;
1496        if (dr == null || dr.mDrawableBottom == null) {
1497            return mPaddingBottom;
1498        } else {
1499            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1500        }
1501    }
1502
1503    /**
1504     * Returns the left padding of the view, plus space for the left
1505     * Drawable if any.
1506     */
1507    public int getCompoundPaddingLeft() {
1508        final Drawables dr = mDrawables;
1509        if (dr == null || dr.mDrawableLeft == null) {
1510            return mPaddingLeft;
1511        } else {
1512            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1513        }
1514    }
1515
1516    /**
1517     * Returns the right padding of the view, plus space for the right
1518     * Drawable if any.
1519     */
1520    public int getCompoundPaddingRight() {
1521        final Drawables dr = mDrawables;
1522        if (dr == null || dr.mDrawableRight == null) {
1523            return mPaddingRight;
1524        } else {
1525            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1526        }
1527    }
1528
1529    /**
1530     * Returns the start padding of the view, plus space for the start
1531     * Drawable if any.
1532     * @hide
1533     */
1534    public int getCompoundPaddingStart() {
1535        resolveDrawables();
1536        switch(getResolvedLayoutDirection()) {
1537            default:
1538            case LAYOUT_DIRECTION_LTR:
1539                return getCompoundPaddingLeft();
1540            case LAYOUT_DIRECTION_RTL:
1541                return getCompoundPaddingRight();
1542        }
1543    }
1544
1545    /**
1546     * Returns the end padding of the view, plus space for the end
1547     * Drawable if any.
1548     * @hide
1549     */
1550    public int getCompoundPaddingEnd() {
1551        resolveDrawables();
1552        switch(getResolvedLayoutDirection()) {
1553            default:
1554            case LAYOUT_DIRECTION_LTR:
1555                return getCompoundPaddingRight();
1556            case LAYOUT_DIRECTION_RTL:
1557                return getCompoundPaddingLeft();
1558        }
1559    }
1560
1561    /**
1562     * Returns the extended top padding of the view, including both the
1563     * top Drawable if any and any extra space to keep more than maxLines
1564     * of text from showing.  It is only valid to call this after measuring.
1565     */
1566    public int getExtendedPaddingTop() {
1567        if (mMaxMode != LINES) {
1568            return getCompoundPaddingTop();
1569        }
1570
1571        if (mLayout.getLineCount() <= mMaximum) {
1572            return getCompoundPaddingTop();
1573        }
1574
1575        int top = getCompoundPaddingTop();
1576        int bottom = getCompoundPaddingBottom();
1577        int viewht = getHeight() - top - bottom;
1578        int layoutht = mLayout.getLineTop(mMaximum);
1579
1580        if (layoutht >= viewht) {
1581            return top;
1582        }
1583
1584        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1585        if (gravity == Gravity.TOP) {
1586            return top;
1587        } else if (gravity == Gravity.BOTTOM) {
1588            return top + viewht - layoutht;
1589        } else { // (gravity == Gravity.CENTER_VERTICAL)
1590            return top + (viewht - layoutht) / 2;
1591        }
1592    }
1593
1594    /**
1595     * Returns the extended bottom padding of the view, including both the
1596     * bottom Drawable if any and any extra space to keep more than maxLines
1597     * of text from showing.  It is only valid to call this after measuring.
1598     */
1599    public int getExtendedPaddingBottom() {
1600        if (mMaxMode != LINES) {
1601            return getCompoundPaddingBottom();
1602        }
1603
1604        if (mLayout.getLineCount() <= mMaximum) {
1605            return getCompoundPaddingBottom();
1606        }
1607
1608        int top = getCompoundPaddingTop();
1609        int bottom = getCompoundPaddingBottom();
1610        int viewht = getHeight() - top - bottom;
1611        int layoutht = mLayout.getLineTop(mMaximum);
1612
1613        if (layoutht >= viewht) {
1614            return bottom;
1615        }
1616
1617        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1618        if (gravity == Gravity.TOP) {
1619            return bottom + viewht - layoutht;
1620        } else if (gravity == Gravity.BOTTOM) {
1621            return bottom;
1622        } else { // (gravity == Gravity.CENTER_VERTICAL)
1623            return bottom + (viewht - layoutht) / 2;
1624        }
1625    }
1626
1627    /**
1628     * Returns the total left padding of the view, including the left
1629     * Drawable if any.
1630     */
1631    public int getTotalPaddingLeft() {
1632        return getCompoundPaddingLeft();
1633    }
1634
1635    /**
1636     * Returns the total right padding of the view, including the right
1637     * Drawable if any.
1638     */
1639    public int getTotalPaddingRight() {
1640        return getCompoundPaddingRight();
1641    }
1642
1643    /**
1644     * Returns the total start padding of the view, including the start
1645     * Drawable if any.
1646     * @hide
1647     */
1648    public int getTotalPaddingStart() {
1649        return getCompoundPaddingStart();
1650    }
1651
1652    /**
1653     * Returns the total end padding of the view, including the end
1654     * Drawable if any.
1655     * @hide
1656     */
1657    public int getTotalPaddingEnd() {
1658        return getCompoundPaddingEnd();
1659    }
1660
1661    /**
1662     * Returns the total top padding of the view, including the top
1663     * Drawable if any, the extra space to keep more than maxLines
1664     * from showing, and the vertical offset for gravity, if any.
1665     */
1666    public int getTotalPaddingTop() {
1667        return getExtendedPaddingTop() + getVerticalOffset(true);
1668    }
1669
1670    /**
1671     * Returns the total bottom padding of the view, including the bottom
1672     * Drawable if any, the extra space to keep more than maxLines
1673     * from showing, and the vertical offset for gravity, if any.
1674     */
1675    public int getTotalPaddingBottom() {
1676        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1677    }
1678
1679    /**
1680     * Sets the Drawables (if any) to appear to the left of, above,
1681     * to the right of, and below the text.  Use null if you do not
1682     * want a Drawable there.  The Drawables must already have had
1683     * {@link Drawable#setBounds} called.
1684     *
1685     * @attr ref android.R.styleable#TextView_drawableLeft
1686     * @attr ref android.R.styleable#TextView_drawableTop
1687     * @attr ref android.R.styleable#TextView_drawableRight
1688     * @attr ref android.R.styleable#TextView_drawableBottom
1689     */
1690    public void setCompoundDrawables(Drawable left, Drawable top,
1691                                     Drawable right, Drawable bottom) {
1692        Drawables dr = mDrawables;
1693
1694        final boolean drawables = left != null || top != null
1695                || right != null || bottom != null;
1696
1697        if (!drawables) {
1698            // Clearing drawables...  can we free the data structure?
1699            if (dr != null) {
1700                if (dr.mDrawablePadding == 0) {
1701                    mDrawables = null;
1702                } else {
1703                    // We need to retain the last set padding, so just clear
1704                    // out all of the fields in the existing structure.
1705                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
1706                    dr.mDrawableLeft = null;
1707                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1708                    dr.mDrawableTop = null;
1709                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
1710                    dr.mDrawableRight = null;
1711                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1712                    dr.mDrawableBottom = null;
1713                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1714                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1715                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1716                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1717                }
1718            }
1719        } else {
1720            if (dr == null) {
1721                mDrawables = dr = new Drawables();
1722            }
1723
1724            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
1725                dr.mDrawableLeft.setCallback(null);
1726            }
1727            dr.mDrawableLeft = left;
1728
1729            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1730                dr.mDrawableTop.setCallback(null);
1731            }
1732            dr.mDrawableTop = top;
1733
1734            if (dr.mDrawableRight != right && dr.mDrawableRight != null) {
1735                dr.mDrawableRight.setCallback(null);
1736            }
1737            dr.mDrawableRight = right;
1738
1739            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1740                dr.mDrawableBottom.setCallback(null);
1741            }
1742            dr.mDrawableBottom = bottom;
1743
1744            final Rect compoundRect = dr.mCompoundRect;
1745            int[] state;
1746
1747            state = getDrawableState();
1748
1749            if (left != null) {
1750                left.setState(state);
1751                left.copyBounds(compoundRect);
1752                left.setCallback(this);
1753                dr.mDrawableSizeLeft = compoundRect.width();
1754                dr.mDrawableHeightLeft = compoundRect.height();
1755            } else {
1756                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
1757            }
1758
1759            if (right != null) {
1760                right.setState(state);
1761                right.copyBounds(compoundRect);
1762                right.setCallback(this);
1763                dr.mDrawableSizeRight = compoundRect.width();
1764                dr.mDrawableHeightRight = compoundRect.height();
1765            } else {
1766                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
1767            }
1768
1769            if (top != null) {
1770                top.setState(state);
1771                top.copyBounds(compoundRect);
1772                top.setCallback(this);
1773                dr.mDrawableSizeTop = compoundRect.height();
1774                dr.mDrawableWidthTop = compoundRect.width();
1775            } else {
1776                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1777            }
1778
1779            if (bottom != null) {
1780                bottom.setState(state);
1781                bottom.copyBounds(compoundRect);
1782                bottom.setCallback(this);
1783                dr.mDrawableSizeBottom = compoundRect.height();
1784                dr.mDrawableWidthBottom = compoundRect.width();
1785            } else {
1786                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1787            }
1788        }
1789
1790        invalidate();
1791        requestLayout();
1792    }
1793
1794    /**
1795     * Sets the Drawables (if any) to appear to the left of, above,
1796     * to the right of, and below the text.  Use 0 if you do not
1797     * want a Drawable there. The Drawables' bounds will be set to
1798     * their intrinsic bounds.
1799     *
1800     * @param left Resource identifier of the left Drawable.
1801     * @param top Resource identifier of the top Drawable.
1802     * @param right Resource identifier of the right Drawable.
1803     * @param bottom Resource identifier of the bottom Drawable.
1804     *
1805     * @attr ref android.R.styleable#TextView_drawableLeft
1806     * @attr ref android.R.styleable#TextView_drawableTop
1807     * @attr ref android.R.styleable#TextView_drawableRight
1808     * @attr ref android.R.styleable#TextView_drawableBottom
1809     */
1810    @android.view.RemotableViewMethod
1811    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
1812        final Resources resources = getContext().getResources();
1813        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null,
1814                top != 0 ? resources.getDrawable(top) : null,
1815                right != 0 ? resources.getDrawable(right) : null,
1816                bottom != 0 ? resources.getDrawable(bottom) : null);
1817    }
1818
1819    /**
1820     * Sets the Drawables (if any) to appear to the left of, above,
1821     * to the right of, and below the text.  Use null if you do not
1822     * want a Drawable there. The Drawables' bounds will be set to
1823     * their intrinsic bounds.
1824     *
1825     * @attr ref android.R.styleable#TextView_drawableLeft
1826     * @attr ref android.R.styleable#TextView_drawableTop
1827     * @attr ref android.R.styleable#TextView_drawableRight
1828     * @attr ref android.R.styleable#TextView_drawableBottom
1829     */
1830    public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top,
1831            Drawable right, Drawable bottom) {
1832
1833        if (left != null) {
1834            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
1835        }
1836        if (right != null) {
1837            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
1838        }
1839        if (top != null) {
1840            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
1841        }
1842        if (bottom != null) {
1843            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
1844        }
1845        setCompoundDrawables(left, top, right, bottom);
1846    }
1847
1848    /**
1849     * Sets the Drawables (if any) to appear to the start of, above,
1850     * to the end of, and below the text.  Use null if you do not
1851     * want a Drawable there.  The Drawables must already have had
1852     * {@link Drawable#setBounds} called.
1853     *
1854     * @attr ref android.R.styleable#TextView_drawableStart
1855     * @attr ref android.R.styleable#TextView_drawableTop
1856     * @attr ref android.R.styleable#TextView_drawableEnd
1857     * @attr ref android.R.styleable#TextView_drawableBottom
1858     * @hide
1859     */
1860    public void setCompoundDrawablesRelative(Drawable start, Drawable top,
1861                                     Drawable end, Drawable bottom) {
1862        Drawables dr = mDrawables;
1863
1864        final boolean drawables = start != null || top != null
1865                || end != null || bottom != null;
1866
1867        if (!drawables) {
1868            // Clearing drawables...  can we free the data structure?
1869            if (dr != null) {
1870                if (dr.mDrawablePadding == 0) {
1871                    mDrawables = null;
1872                } else {
1873                    // We need to retain the last set padding, so just clear
1874                    // out all of the fields in the existing structure.
1875                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
1876                    dr.mDrawableStart = null;
1877                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
1878                    dr.mDrawableTop = null;
1879                    if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
1880                    dr.mDrawableEnd = null;
1881                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
1882                    dr.mDrawableBottom = null;
1883                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1884                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1885                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1886                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1887                }
1888            }
1889        } else {
1890            if (dr == null) {
1891                mDrawables = dr = new Drawables();
1892            }
1893
1894            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
1895                dr.mDrawableStart.setCallback(null);
1896            }
1897            dr.mDrawableStart = start;
1898
1899            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
1900                dr.mDrawableTop.setCallback(null);
1901            }
1902            dr.mDrawableTop = top;
1903
1904            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
1905                dr.mDrawableEnd.setCallback(null);
1906            }
1907            dr.mDrawableEnd = end;
1908
1909            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
1910                dr.mDrawableBottom.setCallback(null);
1911            }
1912            dr.mDrawableBottom = bottom;
1913
1914            final Rect compoundRect = dr.mCompoundRect;
1915            int[] state;
1916
1917            state = getDrawableState();
1918
1919            if (start != null) {
1920                start.setState(state);
1921                start.copyBounds(compoundRect);
1922                start.setCallback(this);
1923                dr.mDrawableSizeStart = compoundRect.width();
1924                dr.mDrawableHeightStart = compoundRect.height();
1925            } else {
1926                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1927            }
1928
1929            if (end != null) {
1930                end.setState(state);
1931                end.copyBounds(compoundRect);
1932                end.setCallback(this);
1933                dr.mDrawableSizeEnd = compoundRect.width();
1934                dr.mDrawableHeightEnd = compoundRect.height();
1935            } else {
1936                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1937            }
1938
1939            if (top != null) {
1940                top.setState(state);
1941                top.copyBounds(compoundRect);
1942                top.setCallback(this);
1943                dr.mDrawableSizeTop = compoundRect.height();
1944                dr.mDrawableWidthTop = compoundRect.width();
1945            } else {
1946                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
1947            }
1948
1949            if (bottom != null) {
1950                bottom.setState(state);
1951                bottom.copyBounds(compoundRect);
1952                bottom.setCallback(this);
1953                dr.mDrawableSizeBottom = compoundRect.height();
1954                dr.mDrawableWidthBottom = compoundRect.width();
1955            } else {
1956                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
1957            }
1958        }
1959
1960        resolveDrawables();
1961        invalidate();
1962        requestLayout();
1963    }
1964
1965    /**
1966     * Sets the Drawables (if any) to appear to the start of, above,
1967     * to the end of, and below the text.  Use 0 if you do not
1968     * want a Drawable there. The Drawables' bounds will be set to
1969     * their intrinsic bounds.
1970     *
1971     * @param start Resource identifier of the start Drawable.
1972     * @param top Resource identifier of the top Drawable.
1973     * @param end Resource identifier of the end Drawable.
1974     * @param bottom Resource identifier of the bottom Drawable.
1975     *
1976     * @attr ref android.R.styleable#TextView_drawableStart
1977     * @attr ref android.R.styleable#TextView_drawableTop
1978     * @attr ref android.R.styleable#TextView_drawableEnd
1979     * @attr ref android.R.styleable#TextView_drawableBottom
1980     * @hide
1981     */
1982    @android.view.RemotableViewMethod
1983    public void setCompoundDrawablesRelativeWithIntrinsicBounds(int start, int top, int end,
1984            int bottom) {
1985        resetResolvedDrawables();
1986        final Resources resources = getContext().getResources();
1987        setCompoundDrawablesRelativeWithIntrinsicBounds(
1988                start != 0 ? resources.getDrawable(start) : null,
1989                top != 0 ? resources.getDrawable(top) : null,
1990                end != 0 ? resources.getDrawable(end) : null,
1991                bottom != 0 ? resources.getDrawable(bottom) : null);
1992    }
1993
1994    /**
1995     * Sets the Drawables (if any) to appear to the start of, above,
1996     * to the end of, and below the text.  Use null if you do not
1997     * want a Drawable there. The Drawables' bounds will be set to
1998     * their intrinsic bounds.
1999     *
2000     * @attr ref android.R.styleable#TextView_drawableStart
2001     * @attr ref android.R.styleable#TextView_drawableTop
2002     * @attr ref android.R.styleable#TextView_drawableEnd
2003     * @attr ref android.R.styleable#TextView_drawableBottom
2004     * @hide
2005     */
2006    public void setCompoundDrawablesRelativeWithIntrinsicBounds(Drawable start, Drawable top,
2007            Drawable end, Drawable bottom) {
2008
2009        resetResolvedDrawables();
2010        if (start != null) {
2011            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2012        }
2013        if (end != null) {
2014            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2015        }
2016        if (top != null) {
2017            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2018        }
2019        if (bottom != null) {
2020            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2021        }
2022        setCompoundDrawablesRelative(start, top, end, bottom);
2023    }
2024
2025    /**
2026     * Returns drawables for the left, top, right, and bottom borders.
2027     *
2028     * @attr ref android.R.styleable#TextView_drawableLeft
2029     * @attr ref android.R.styleable#TextView_drawableTop
2030     * @attr ref android.R.styleable#TextView_drawableRight
2031     * @attr ref android.R.styleable#TextView_drawableBottom
2032     */
2033    public Drawable[] getCompoundDrawables() {
2034        final Drawables dr = mDrawables;
2035        if (dr != null) {
2036            return new Drawable[] {
2037                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
2038            };
2039        } else {
2040            return new Drawable[] { null, null, null, null };
2041        }
2042    }
2043
2044    /**
2045     * Returns drawables for the start, top, end, and bottom borders.
2046     *
2047     * @attr ref android.R.styleable#TextView_drawableStart
2048     * @attr ref android.R.styleable#TextView_drawableTop
2049     * @attr ref android.R.styleable#TextView_drawableEnd
2050     * @attr ref android.R.styleable#TextView_drawableBottom
2051     * @hide
2052     */
2053    public Drawable[] getCompoundDrawablesRelative() {
2054        final Drawables dr = mDrawables;
2055        if (dr != null) {
2056            return new Drawable[] {
2057                dr.mDrawableStart, dr.mDrawableTop, dr.mDrawableEnd, dr.mDrawableBottom
2058            };
2059        } else {
2060            return new Drawable[] { null, null, null, null };
2061        }
2062    }
2063
2064    /**
2065     * Sets the size of the padding between the compound drawables and
2066     * the text.
2067     *
2068     * @attr ref android.R.styleable#TextView_drawablePadding
2069     */
2070    @android.view.RemotableViewMethod
2071    public void setCompoundDrawablePadding(int pad) {
2072        Drawables dr = mDrawables;
2073        if (pad == 0) {
2074            if (dr != null) {
2075                dr.mDrawablePadding = pad;
2076            }
2077        } else {
2078            if (dr == null) {
2079                mDrawables = dr = new Drawables();
2080            }
2081            dr.mDrawablePadding = pad;
2082        }
2083
2084        invalidate();
2085        requestLayout();
2086    }
2087
2088    /**
2089     * Returns the padding between the compound drawables and the text.
2090     *
2091     * @attr ref android.R.styleable#TextView_drawablePadding
2092     */
2093    public int getCompoundDrawablePadding() {
2094        final Drawables dr = mDrawables;
2095        return dr != null ? dr.mDrawablePadding : 0;
2096    }
2097
2098    @Override
2099    public void setPadding(int left, int top, int right, int bottom) {
2100        if (left != mPaddingLeft ||
2101            right != mPaddingRight ||
2102            top != mPaddingTop ||
2103            bottom != mPaddingBottom) {
2104            nullLayouts();
2105        }
2106
2107        // the super call will requestLayout()
2108        super.setPadding(left, top, right, bottom);
2109        invalidate();
2110    }
2111
2112    @Override
2113    public void setPaddingRelative(int start, int top, int end, int bottom) {
2114        if (start != getPaddingStart() ||
2115            end != getPaddingEnd() ||
2116            top != mPaddingTop ||
2117            bottom != mPaddingBottom) {
2118            nullLayouts();
2119        }
2120
2121        // the super call will requestLayout()
2122        super.setPaddingRelative(start, top, end, bottom);
2123        invalidate();
2124    }
2125
2126    /**
2127     * Gets the autolink mask of the text.  See {@link
2128     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2129     * possible values.
2130     *
2131     * @attr ref android.R.styleable#TextView_autoLink
2132     */
2133    public final int getAutoLinkMask() {
2134        return mAutoLinkMask;
2135    }
2136
2137    /**
2138     * Sets the text color, size, style, hint color, and highlight color
2139     * from the specified TextAppearance resource.
2140     */
2141    public void setTextAppearance(Context context, int resid) {
2142        TypedArray appearance =
2143            context.obtainStyledAttributes(resid,
2144                                           com.android.internal.R.styleable.TextAppearance);
2145
2146        int color;
2147        ColorStateList colors;
2148        int ts;
2149
2150        color = appearance.getColor(
2151                com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
2152        if (color != 0) {
2153            setHighlightColor(color);
2154        }
2155
2156        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2157                                              TextAppearance_textColor);
2158        if (colors != null) {
2159            setTextColor(colors);
2160        }
2161
2162        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
2163                                              TextAppearance_textSize, 0);
2164        if (ts != 0) {
2165            setRawTextSize(ts);
2166        }
2167
2168        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2169                                              TextAppearance_textColorHint);
2170        if (colors != null) {
2171            setHintTextColor(colors);
2172        }
2173
2174        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2175                                              TextAppearance_textColorLink);
2176        if (colors != null) {
2177            setLinkTextColor(colors);
2178        }
2179
2180        String familyName;
2181        int typefaceIndex, styleIndex;
2182
2183        familyName = appearance.getString(com.android.internal.R.styleable.
2184                                          TextAppearance_fontFamily);
2185        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
2186                                          TextAppearance_typeface, -1);
2187        styleIndex = appearance.getInt(com.android.internal.R.styleable.
2188                                       TextAppearance_textStyle, -1);
2189
2190        setTypefaceFromAttrs(familyName, typefaceIndex, styleIndex);
2191
2192        if (appearance.getBoolean(com.android.internal.R.styleable.TextAppearance_textAllCaps,
2193                false)) {
2194            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2195        }
2196
2197        appearance.recycle();
2198    }
2199
2200    /**
2201     * @return the size (in pixels) of the default text size in this TextView.
2202     */
2203    @ViewDebug.ExportedProperty(category = "text")
2204    public float getTextSize() {
2205        return mTextPaint.getTextSize();
2206    }
2207
2208    /**
2209     * Set the default text size to the given value, interpreted as "scaled
2210     * pixel" units.  This size is adjusted based on the current density and
2211     * user font size preference.
2212     *
2213     * @param size The scaled pixel size.
2214     *
2215     * @attr ref android.R.styleable#TextView_textSize
2216     */
2217    @android.view.RemotableViewMethod
2218    public void setTextSize(float size) {
2219        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2220    }
2221
2222    /**
2223     * Set the default text size to a given unit and value.  See {@link
2224     * TypedValue} for the possible dimension units.
2225     *
2226     * @param unit The desired dimension unit.
2227     * @param size The desired size in the given units.
2228     *
2229     * @attr ref android.R.styleable#TextView_textSize
2230     */
2231    public void setTextSize(int unit, float size) {
2232        Context c = getContext();
2233        Resources r;
2234
2235        if (c == null)
2236            r = Resources.getSystem();
2237        else
2238            r = c.getResources();
2239
2240        setRawTextSize(TypedValue.applyDimension(
2241            unit, size, r.getDisplayMetrics()));
2242    }
2243
2244    private void setRawTextSize(float size) {
2245        if (size != mTextPaint.getTextSize()) {
2246            mTextPaint.setTextSize(size);
2247
2248            if (mLayout != null) {
2249                nullLayouts();
2250                requestLayout();
2251                invalidate();
2252            }
2253        }
2254    }
2255
2256    /**
2257     * @return the extent by which text is currently being stretched
2258     * horizontally.  This will usually be 1.
2259     */
2260    public float getTextScaleX() {
2261        return mTextPaint.getTextScaleX();
2262    }
2263
2264    /**
2265     * Sets the extent by which text should be stretched horizontally.
2266     *
2267     * @attr ref android.R.styleable#TextView_textScaleX
2268     */
2269    @android.view.RemotableViewMethod
2270    public void setTextScaleX(float size) {
2271        if (size != mTextPaint.getTextScaleX()) {
2272            mUserSetTextScaleX = true;
2273            mTextPaint.setTextScaleX(size);
2274
2275            if (mLayout != null) {
2276                nullLayouts();
2277                requestLayout();
2278                invalidate();
2279            }
2280        }
2281    }
2282
2283    /**
2284     * Sets the typeface and style in which the text should be displayed.
2285     * Note that not all Typeface families actually have bold and italic
2286     * variants, so you may need to use
2287     * {@link #setTypeface(Typeface, int)} to get the appearance
2288     * that you actually want.
2289     *
2290     * @see #getTypeface()
2291     *
2292     * @attr ref android.R.styleable#TextView_fontFamily
2293     * @attr ref android.R.styleable#TextView_typeface
2294     * @attr ref android.R.styleable#TextView_textStyle
2295     */
2296    public void setTypeface(Typeface tf) {
2297        if (mTextPaint.getTypeface() != tf) {
2298            mTextPaint.setTypeface(tf);
2299
2300            if (mLayout != null) {
2301                nullLayouts();
2302                requestLayout();
2303                invalidate();
2304            }
2305        }
2306    }
2307
2308    /**
2309     * @return the current typeface and style in which the text is being
2310     * displayed.
2311     *
2312     * @see #setTypeface(Typeface)
2313     *
2314     * @attr ref android.R.styleable#TextView_fontFamily
2315     * @attr ref android.R.styleable#TextView_typeface
2316     * @attr ref android.R.styleable#TextView_textStyle
2317     */
2318    public Typeface getTypeface() {
2319        return mTextPaint.getTypeface();
2320    }
2321
2322    /**
2323     * Sets the text color for all the states (normal, selected,
2324     * focused) to be this color.
2325     *
2326     * @see #setTextColor(ColorStateList)
2327     * @see #getTextColors()
2328     *
2329     * @attr ref android.R.styleable#TextView_textColor
2330     */
2331    @android.view.RemotableViewMethod
2332    public void setTextColor(int color) {
2333        mTextColor = ColorStateList.valueOf(color);
2334        updateTextColors();
2335    }
2336
2337    /**
2338     * Sets the text color.
2339     *
2340     * @see #setTextColor(int)
2341     * @see #getTextColors()
2342     * @see #setHintTextColor(ColorStateList)
2343     * @see #setLinkTextColor(ColorStateList)
2344     *
2345     * @attr ref android.R.styleable#TextView_textColor
2346     */
2347    public void setTextColor(ColorStateList colors) {
2348        if (colors == null) {
2349            throw new NullPointerException();
2350        }
2351
2352        mTextColor = colors;
2353        updateTextColors();
2354    }
2355
2356    /**
2357     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
2358     *
2359     * @see #setTextColor(ColorStateList)
2360     * @see #setTextColor(int)
2361     *
2362     * @attr ref android.R.styleable#TextView_textColor
2363     */
2364    public final ColorStateList getTextColors() {
2365        return mTextColor;
2366    }
2367
2368    /**
2369     * <p>Return the current color selected for normal text.</p>
2370     *
2371     * @return Returns the current text color.
2372     */
2373    public final int getCurrentTextColor() {
2374        return mCurTextColor;
2375    }
2376
2377    /**
2378     * Sets the color used to display the selection highlight.
2379     *
2380     * @attr ref android.R.styleable#TextView_textColorHighlight
2381     */
2382    @android.view.RemotableViewMethod
2383    public void setHighlightColor(int color) {
2384        if (mHighlightColor != color) {
2385            mHighlightColor = color;
2386            invalidate();
2387        }
2388    }
2389
2390    /**
2391     * @return the color used to display the selection highlight
2392     *
2393     * @see #setHighlightColor(int)
2394     *
2395     * @attr ref android.R.styleable#TextView_textColorHighlight
2396     */
2397    public int getHighlightColor() {
2398        return mHighlightColor;
2399    }
2400
2401    /**
2402     * Sets whether the soft input method will be made visible when this
2403     * TextView gets focused. The default is true.
2404     * @hide
2405     */
2406    @android.view.RemotableViewMethod
2407    public final void setShowSoftInputOnFocus(boolean show) {
2408        createEditorIfNeeded();
2409        mEditor.mShowSoftInputOnFocus = show;
2410    }
2411
2412    /**
2413     * Returns whether the soft input method will be made visible when this
2414     * TextView gets focused. The default is true.
2415     * @hide
2416     */
2417    public final boolean getShowSoftInputOnFocus() {
2418        // When there is no Editor, return default true value
2419        return mEditor == null || mEditor.mShowSoftInputOnFocus;
2420    }
2421
2422    /**
2423     * Gives the text a shadow of the specified radius and color, the specified
2424     * distance from its normal position.
2425     *
2426     * @attr ref android.R.styleable#TextView_shadowColor
2427     * @attr ref android.R.styleable#TextView_shadowDx
2428     * @attr ref android.R.styleable#TextView_shadowDy
2429     * @attr ref android.R.styleable#TextView_shadowRadius
2430     */
2431    public void setShadowLayer(float radius, float dx, float dy, int color) {
2432        mTextPaint.setShadowLayer(radius, dx, dy, color);
2433
2434        mShadowRadius = radius;
2435        mShadowDx = dx;
2436        mShadowDy = dy;
2437
2438        // Will change text clip region
2439        if (mEditor != null) mEditor.invalidateTextDisplayList();
2440        invalidate();
2441    }
2442
2443    /**
2444     * Gets the radius of the shadow layer.
2445     *
2446     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
2447     *
2448     * @see #setShadowLayer(float, float, float, int)
2449     *
2450     * @attr ref android.R.styleable#TextView_shadowRadius
2451     */
2452    public float getShadowRadius() {
2453        return mShadowRadius;
2454    }
2455
2456    /**
2457     * @return the horizontal offset of the shadow layer
2458     *
2459     * @see #setShadowLayer(float, float, float, int)
2460     *
2461     * @attr ref android.R.styleable#TextView_shadowDx
2462     */
2463    public float getShadowDx() {
2464        return mShadowDx;
2465    }
2466
2467    /**
2468     * @return the vertical offset of the shadow layer
2469     *
2470     * @see #setShadowLayer(float, float, float, int)
2471     *
2472     * @attr ref android.R.styleable#TextView_shadowDy
2473     */
2474    public float getShadowDy() {
2475        return mShadowDy;
2476    }
2477
2478    /**
2479     * @return the color of the shadow layer
2480     *
2481     * @see #setShadowLayer(float, float, float, int)
2482     *
2483     * @attr ref android.R.styleable#TextView_shadowColor
2484     */
2485    public int getShadowColor() {
2486        return mTextPaint.shadowColor;
2487    }
2488
2489    /**
2490     * @return the base paint used for the text.  Please use this only to
2491     * consult the Paint's properties and not to change them.
2492     */
2493    public TextPaint getPaint() {
2494        return mTextPaint;
2495    }
2496
2497    /**
2498     * Sets the autolink mask of the text.  See {@link
2499     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2500     * possible values.
2501     *
2502     * @attr ref android.R.styleable#TextView_autoLink
2503     */
2504    @android.view.RemotableViewMethod
2505    public final void setAutoLinkMask(int mask) {
2506        mAutoLinkMask = mask;
2507    }
2508
2509    /**
2510     * Sets whether the movement method will automatically be set to
2511     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2512     * set to nonzero and links are detected in {@link #setText}.
2513     * The default is true.
2514     *
2515     * @attr ref android.R.styleable#TextView_linksClickable
2516     */
2517    @android.view.RemotableViewMethod
2518    public final void setLinksClickable(boolean whether) {
2519        mLinksClickable = whether;
2520    }
2521
2522    /**
2523     * Returns whether the movement method will automatically be set to
2524     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
2525     * set to nonzero and links are detected in {@link #setText}.
2526     * The default is true.
2527     *
2528     * @attr ref android.R.styleable#TextView_linksClickable
2529     */
2530    public final boolean getLinksClickable() {
2531        return mLinksClickable;
2532    }
2533
2534    /**
2535     * Returns the list of URLSpans attached to the text
2536     * (by {@link Linkify} or otherwise) if any.  You can call
2537     * {@link URLSpan#getURL} on them to find where they link to
2538     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
2539     * to find the region of the text they are attached to.
2540     */
2541    public URLSpan[] getUrls() {
2542        if (mText instanceof Spanned) {
2543            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
2544        } else {
2545            return new URLSpan[0];
2546        }
2547    }
2548
2549    /**
2550     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
2551     * TextView.
2552     *
2553     * @see #setHintTextColor(ColorStateList)
2554     * @see #getHintTextColors()
2555     * @see #setTextColor(int)
2556     *
2557     * @attr ref android.R.styleable#TextView_textColorHint
2558     */
2559    @android.view.RemotableViewMethod
2560    public final void setHintTextColor(int color) {
2561        mHintTextColor = ColorStateList.valueOf(color);
2562        updateTextColors();
2563    }
2564
2565    /**
2566     * Sets the color of the hint text.
2567     *
2568     * @see #getHintTextColors()
2569     * @see #setHintTextColor(int)
2570     * @see #setTextColor(ColorStateList)
2571     * @see #setLinkTextColor(ColorStateList)
2572     *
2573     * @attr ref android.R.styleable#TextView_textColorHint
2574     */
2575    public final void setHintTextColor(ColorStateList colors) {
2576        mHintTextColor = colors;
2577        updateTextColors();
2578    }
2579
2580    /**
2581     * @return the color of the hint text, for the different states of this TextView.
2582     *
2583     * @see #setHintTextColor(ColorStateList)
2584     * @see #setHintTextColor(int)
2585     * @see #setTextColor(ColorStateList)
2586     * @see #setLinkTextColor(ColorStateList)
2587     *
2588     * @attr ref android.R.styleable#TextView_textColorHint
2589     */
2590    public final ColorStateList getHintTextColors() {
2591        return mHintTextColor;
2592    }
2593
2594    /**
2595     * <p>Return the current color selected to paint the hint text.</p>
2596     *
2597     * @return Returns the current hint text color.
2598     */
2599    public final int getCurrentHintTextColor() {
2600        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
2601    }
2602
2603    /**
2604     * Sets the color of links in the text.
2605     *
2606     * @see #setLinkTextColor(ColorStateList)
2607     * @see #getLinkTextColors()
2608     *
2609     * @attr ref android.R.styleable#TextView_textColorLink
2610     */
2611    @android.view.RemotableViewMethod
2612    public final void setLinkTextColor(int color) {
2613        mLinkTextColor = ColorStateList.valueOf(color);
2614        updateTextColors();
2615    }
2616
2617    /**
2618     * Sets the color of links in the text.
2619     *
2620     * @see #setLinkTextColor(int)
2621     * @see #getLinkTextColors()
2622     * @see #setTextColor(ColorStateList)
2623     * @see #setHintTextColor(ColorStateList)
2624     *
2625     * @attr ref android.R.styleable#TextView_textColorLink
2626     */
2627    public final void setLinkTextColor(ColorStateList colors) {
2628        mLinkTextColor = colors;
2629        updateTextColors();
2630    }
2631
2632    /**
2633     * @return the list of colors used to paint the links in the text, for the different states of
2634     * this TextView
2635     *
2636     * @see #setLinkTextColor(ColorStateList)
2637     * @see #setLinkTextColor(int)
2638     *
2639     * @attr ref android.R.styleable#TextView_textColorLink
2640     */
2641    public final ColorStateList getLinkTextColors() {
2642        return mLinkTextColor;
2643    }
2644
2645    /**
2646     * Sets the horizontal alignment of the text and the
2647     * vertical gravity that will be used when there is extra space
2648     * in the TextView beyond what is required for the text itself.
2649     *
2650     * @see android.view.Gravity
2651     * @attr ref android.R.styleable#TextView_gravity
2652     */
2653    public void setGravity(int gravity) {
2654        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
2655            gravity |= Gravity.START;
2656        }
2657        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
2658            gravity |= Gravity.TOP;
2659        }
2660
2661        boolean newLayout = false;
2662
2663        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
2664            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
2665            newLayout = true;
2666        }
2667
2668        if (gravity != mGravity) {
2669            invalidate();
2670            mLayoutAlignment = null;
2671        }
2672
2673        mGravity = gravity;
2674
2675        if (mLayout != null && newLayout) {
2676            // XXX this is heavy-handed because no actual content changes.
2677            int want = mLayout.getWidth();
2678            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
2679
2680            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
2681                          mRight - mLeft - getCompoundPaddingLeft() -
2682                          getCompoundPaddingRight(), true);
2683        }
2684    }
2685
2686    /**
2687     * Returns the horizontal and vertical alignment of this TextView.
2688     *
2689     * @see android.view.Gravity
2690     * @attr ref android.R.styleable#TextView_gravity
2691     */
2692    public int getGravity() {
2693        return mGravity;
2694    }
2695
2696    /**
2697     * @return the flags on the Paint being used to display the text.
2698     * @see Paint#getFlags
2699     */
2700    public int getPaintFlags() {
2701        return mTextPaint.getFlags();
2702    }
2703
2704    /**
2705     * Sets flags on the Paint being used to display the text and
2706     * reflows the text if they are different from the old flags.
2707     * @see Paint#setFlags
2708     */
2709    @android.view.RemotableViewMethod
2710    public void setPaintFlags(int flags) {
2711        if (mTextPaint.getFlags() != flags) {
2712            mTextPaint.setFlags(flags);
2713
2714            if (mLayout != null) {
2715                nullLayouts();
2716                requestLayout();
2717                invalidate();
2718            }
2719        }
2720    }
2721
2722    /**
2723     * Sets whether the text should be allowed to be wider than the
2724     * View is.  If false, it will be wrapped to the width of the View.
2725     *
2726     * @attr ref android.R.styleable#TextView_scrollHorizontally
2727     */
2728    public void setHorizontallyScrolling(boolean whether) {
2729        if (mHorizontallyScrolling != whether) {
2730            mHorizontallyScrolling = whether;
2731
2732            if (mLayout != null) {
2733                nullLayouts();
2734                requestLayout();
2735                invalidate();
2736            }
2737        }
2738    }
2739
2740    /**
2741     * Returns whether the text is allowed to be wider than the View is.
2742     * If false, the text will be wrapped to the width of the View.
2743     *
2744     * @attr ref android.R.styleable#TextView_scrollHorizontally
2745     * @hide
2746     */
2747    public boolean getHorizontallyScrolling() {
2748        return mHorizontallyScrolling;
2749    }
2750
2751    /**
2752     * Makes the TextView at least this many lines tall.
2753     *
2754     * Setting this value overrides any other (minimum) height setting. A single line TextView will
2755     * set this value to 1.
2756     *
2757     * @see #getMinLines()
2758     *
2759     * @attr ref android.R.styleable#TextView_minLines
2760     */
2761    @android.view.RemotableViewMethod
2762    public void setMinLines(int minlines) {
2763        mMinimum = minlines;
2764        mMinMode = LINES;
2765
2766        requestLayout();
2767        invalidate();
2768    }
2769
2770    /**
2771     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
2772     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
2773     *
2774     * @see #setMinLines(int)
2775     *
2776     * @attr ref android.R.styleable#TextView_minLines
2777     */
2778    public int getMinLines() {
2779        return mMinMode == LINES ? mMinimum : -1;
2780    }
2781
2782    /**
2783     * Makes the TextView at least this many pixels tall.
2784     *
2785     * Setting this value overrides any other (minimum) number of lines setting.
2786     *
2787     * @attr ref android.R.styleable#TextView_minHeight
2788     */
2789    @android.view.RemotableViewMethod
2790    public void setMinHeight(int minHeight) {
2791        mMinimum = minHeight;
2792        mMinMode = PIXELS;
2793
2794        requestLayout();
2795        invalidate();
2796    }
2797
2798    /**
2799     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
2800     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
2801     *
2802     * @see #setMinHeight(int)
2803     *
2804     * @attr ref android.R.styleable#TextView_minHeight
2805     */
2806    public int getMinHeight() {
2807        return mMinMode == PIXELS ? mMinimum : -1;
2808    }
2809
2810    /**
2811     * Makes the TextView at most this many lines tall.
2812     *
2813     * Setting this value overrides any other (maximum) height setting.
2814     *
2815     * @attr ref android.R.styleable#TextView_maxLines
2816     */
2817    @android.view.RemotableViewMethod
2818    public void setMaxLines(int maxlines) {
2819        mMaximum = maxlines;
2820        mMaxMode = LINES;
2821
2822        requestLayout();
2823        invalidate();
2824    }
2825
2826    /**
2827     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
2828     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
2829     *
2830     * @see #setMaxLines(int)
2831     *
2832     * @attr ref android.R.styleable#TextView_maxLines
2833     */
2834    public int getMaxLines() {
2835        return mMaxMode == LINES ? mMaximum : -1;
2836    }
2837
2838    /**
2839     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
2840     * {@link #setMaxLines(int)} method.
2841     *
2842     * Setting this value overrides any other (maximum) number of lines setting.
2843     *
2844     * @attr ref android.R.styleable#TextView_maxHeight
2845     */
2846    @android.view.RemotableViewMethod
2847    public void setMaxHeight(int maxHeight) {
2848        mMaximum = maxHeight;
2849        mMaxMode = PIXELS;
2850
2851        requestLayout();
2852        invalidate();
2853    }
2854
2855    /**
2856     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
2857     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
2858     *
2859     * @see #setMaxHeight(int)
2860     *
2861     * @attr ref android.R.styleable#TextView_maxHeight
2862     */
2863    public int getMaxHeight() {
2864        return mMaxMode == PIXELS ? mMaximum : -1;
2865    }
2866
2867    /**
2868     * Makes the TextView exactly this many lines tall.
2869     *
2870     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2871     * height setting. A single line TextView will set this value to 1.
2872     *
2873     * @attr ref android.R.styleable#TextView_lines
2874     */
2875    @android.view.RemotableViewMethod
2876    public void setLines(int lines) {
2877        mMaximum = mMinimum = lines;
2878        mMaxMode = mMinMode = LINES;
2879
2880        requestLayout();
2881        invalidate();
2882    }
2883
2884    /**
2885     * Makes the TextView exactly this many pixels tall.
2886     * You could do the same thing by specifying this number in the
2887     * LayoutParams.
2888     *
2889     * Note that setting this value overrides any other (minimum / maximum) number of lines or
2890     * height setting.
2891     *
2892     * @attr ref android.R.styleable#TextView_height
2893     */
2894    @android.view.RemotableViewMethod
2895    public void setHeight(int pixels) {
2896        mMaximum = mMinimum = pixels;
2897        mMaxMode = mMinMode = PIXELS;
2898
2899        requestLayout();
2900        invalidate();
2901    }
2902
2903    /**
2904     * Makes the TextView at least this many ems wide
2905     *
2906     * @attr ref android.R.styleable#TextView_minEms
2907     */
2908    @android.view.RemotableViewMethod
2909    public void setMinEms(int minems) {
2910        mMinWidth = minems;
2911        mMinWidthMode = EMS;
2912
2913        requestLayout();
2914        invalidate();
2915    }
2916
2917    /**
2918     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
2919     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
2920     *
2921     * @see #setMinEms(int)
2922     * @see #setEms(int)
2923     *
2924     * @attr ref android.R.styleable#TextView_minEms
2925     */
2926    public int getMinEms() {
2927        return mMinWidthMode == EMS ? mMinWidth : -1;
2928    }
2929
2930    /**
2931     * Makes the TextView at least this many pixels wide
2932     *
2933     * @attr ref android.R.styleable#TextView_minWidth
2934     */
2935    @android.view.RemotableViewMethod
2936    public void setMinWidth(int minpixels) {
2937        mMinWidth = minpixels;
2938        mMinWidthMode = PIXELS;
2939
2940        requestLayout();
2941        invalidate();
2942    }
2943
2944    /**
2945     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
2946     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
2947     *
2948     * @see #setMinWidth(int)
2949     * @see #setWidth(int)
2950     *
2951     * @attr ref android.R.styleable#TextView_minWidth
2952     */
2953    public int getMinWidth() {
2954        return mMinWidthMode == PIXELS ? mMinWidth : -1;
2955    }
2956
2957    /**
2958     * Makes the TextView at most this many ems wide
2959     *
2960     * @attr ref android.R.styleable#TextView_maxEms
2961     */
2962    @android.view.RemotableViewMethod
2963    public void setMaxEms(int maxems) {
2964        mMaxWidth = maxems;
2965        mMaxWidthMode = EMS;
2966
2967        requestLayout();
2968        invalidate();
2969    }
2970
2971    /**
2972     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
2973     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
2974     *
2975     * @see #setMaxEms(int)
2976     * @see #setEms(int)
2977     *
2978     * @attr ref android.R.styleable#TextView_maxEms
2979     */
2980    public int getMaxEms() {
2981        return mMaxWidthMode == EMS ? mMaxWidth : -1;
2982    }
2983
2984    /**
2985     * Makes the TextView at most this many pixels wide
2986     *
2987     * @attr ref android.R.styleable#TextView_maxWidth
2988     */
2989    @android.view.RemotableViewMethod
2990    public void setMaxWidth(int maxpixels) {
2991        mMaxWidth = maxpixels;
2992        mMaxWidthMode = PIXELS;
2993
2994        requestLayout();
2995        invalidate();
2996    }
2997
2998    /**
2999     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3000     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3001     *
3002     * @see #setMaxWidth(int)
3003     * @see #setWidth(int)
3004     *
3005     * @attr ref android.R.styleable#TextView_maxWidth
3006     */
3007    public int getMaxWidth() {
3008        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3009    }
3010
3011    /**
3012     * Makes the TextView exactly this many ems wide
3013     *
3014     * @see #setMaxEms(int)
3015     * @see #setMinEms(int)
3016     * @see #getMinEms()
3017     * @see #getMaxEms()
3018     *
3019     * @attr ref android.R.styleable#TextView_ems
3020     */
3021    @android.view.RemotableViewMethod
3022    public void setEms(int ems) {
3023        mMaxWidth = mMinWidth = ems;
3024        mMaxWidthMode = mMinWidthMode = EMS;
3025
3026        requestLayout();
3027        invalidate();
3028    }
3029
3030    /**
3031     * Makes the TextView exactly this many pixels wide.
3032     * You could do the same thing by specifying this number in the
3033     * LayoutParams.
3034     *
3035     * @see #setMaxWidth(int)
3036     * @see #setMinWidth(int)
3037     * @see #getMinWidth()
3038     * @see #getMaxWidth()
3039     *
3040     * @attr ref android.R.styleable#TextView_width
3041     */
3042    @android.view.RemotableViewMethod
3043    public void setWidth(int pixels) {
3044        mMaxWidth = mMinWidth = pixels;
3045        mMaxWidthMode = mMinWidthMode = PIXELS;
3046
3047        requestLayout();
3048        invalidate();
3049    }
3050
3051    /**
3052     * Sets line spacing for this TextView.  Each line will have its height
3053     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3054     *
3055     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3056     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3057     */
3058    public void setLineSpacing(float add, float mult) {
3059        if (mSpacingAdd != add || mSpacingMult != mult) {
3060            mSpacingAdd = add;
3061            mSpacingMult = mult;
3062
3063            if (mLayout != null) {
3064                nullLayouts();
3065                requestLayout();
3066                invalidate();
3067            }
3068        }
3069    }
3070
3071    /**
3072     * Gets the line spacing multiplier
3073     *
3074     * @return the value by which each line's height is multiplied to get its actual height.
3075     *
3076     * @see #setLineSpacing(float, float)
3077     * @see #getLineSpacingExtra()
3078     *
3079     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3080     */
3081    public float getLineSpacingMultiplier() {
3082        return mSpacingMult;
3083    }
3084
3085    /**
3086     * Gets the line spacing extra space
3087     *
3088     * @return the extra space that is added to the height of each lines of this TextView.
3089     *
3090     * @see #setLineSpacing(float, float)
3091     * @see #getLineSpacingMultiplier()
3092     *
3093     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3094     */
3095    public float getLineSpacingExtra() {
3096        return mSpacingAdd;
3097    }
3098
3099    /**
3100     * Convenience method: Append the specified text to the TextView's
3101     * display buffer, upgrading it to BufferType.EDITABLE if it was
3102     * not already editable.
3103     */
3104    public final void append(CharSequence text) {
3105        append(text, 0, text.length());
3106    }
3107
3108    /**
3109     * Convenience method: Append the specified text slice to the TextView's
3110     * display buffer, upgrading it to BufferType.EDITABLE if it was
3111     * not already editable.
3112     */
3113    public void append(CharSequence text, int start, int end) {
3114        if (!(mText instanceof Editable)) {
3115            setText(mText, BufferType.EDITABLE);
3116        }
3117
3118        ((Editable) mText).append(text, start, end);
3119    }
3120
3121    private void updateTextColors() {
3122        boolean inval = false;
3123        int color = mTextColor.getColorForState(getDrawableState(), 0);
3124        if (color != mCurTextColor) {
3125            mCurTextColor = color;
3126            inval = true;
3127        }
3128        if (mLinkTextColor != null) {
3129            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
3130            if (color != mTextPaint.linkColor) {
3131                mTextPaint.linkColor = color;
3132                inval = true;
3133            }
3134        }
3135        if (mHintTextColor != null) {
3136            color = mHintTextColor.getColorForState(getDrawableState(), 0);
3137            if (color != mCurHintTextColor && mText.length() == 0) {
3138                mCurHintTextColor = color;
3139                inval = true;
3140            }
3141        }
3142        if (inval) {
3143            // Text needs to be redrawn with the new color
3144            if (mEditor != null) mEditor.invalidateTextDisplayList();
3145            invalidate();
3146        }
3147    }
3148
3149    @Override
3150    protected void drawableStateChanged() {
3151        super.drawableStateChanged();
3152        if (mTextColor != null && mTextColor.isStateful()
3153                || (mHintTextColor != null && mHintTextColor.isStateful())
3154                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
3155            updateTextColors();
3156        }
3157
3158        final Drawables dr = mDrawables;
3159        if (dr != null) {
3160            int[] state = getDrawableState();
3161            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
3162                dr.mDrawableTop.setState(state);
3163            }
3164            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
3165                dr.mDrawableBottom.setState(state);
3166            }
3167            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
3168                dr.mDrawableLeft.setState(state);
3169            }
3170            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
3171                dr.mDrawableRight.setState(state);
3172            }
3173            if (dr.mDrawableStart != null && dr.mDrawableStart.isStateful()) {
3174                dr.mDrawableStart.setState(state);
3175            }
3176            if (dr.mDrawableEnd != null && dr.mDrawableEnd.isStateful()) {
3177                dr.mDrawableEnd.setState(state);
3178            }
3179        }
3180    }
3181
3182    @Override
3183    public Parcelable onSaveInstanceState() {
3184        Parcelable superState = super.onSaveInstanceState();
3185
3186        // Save state if we are forced to
3187        boolean save = mFreezesText;
3188        int start = 0;
3189        int end = 0;
3190
3191        if (mText != null) {
3192            start = getSelectionStart();
3193            end = getSelectionEnd();
3194            if (start >= 0 || end >= 0) {
3195                // Or save state if there is a selection
3196                save = true;
3197            }
3198        }
3199
3200        if (save) {
3201            SavedState ss = new SavedState(superState);
3202            // XXX Should also save the current scroll position!
3203            ss.selStart = start;
3204            ss.selEnd = end;
3205
3206            if (mText instanceof Spanned) {
3207                /*
3208                 * Calling setText() strips off any ChangeWatchers;
3209                 * strip them now to avoid leaking references.
3210                 * But do it to a copy so that if there are any
3211                 * further changes to the text of this view, it
3212                 * won't get into an inconsistent state.
3213                 */
3214
3215                Spannable sp = new SpannableString(mText);
3216
3217                for (ChangeWatcher cw : sp.getSpans(0, sp.length(), ChangeWatcher.class)) {
3218                    sp.removeSpan(cw);
3219                }
3220
3221                if (mEditor != null) {
3222                    removeMisspelledSpans(sp);
3223                    sp.removeSpan(mEditor.mSuggestionRangeSpan);
3224                }
3225
3226                ss.text = sp;
3227            } else {
3228                ss.text = mText.toString();
3229            }
3230
3231            if (isFocused() && start >= 0 && end >= 0) {
3232                ss.frozenWithFocus = true;
3233            }
3234
3235            ss.error = getError();
3236
3237            return ss;
3238        }
3239
3240        return superState;
3241    }
3242
3243    void removeMisspelledSpans(Spannable spannable) {
3244        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
3245                SuggestionSpan.class);
3246        for (int i = 0; i < suggestionSpans.length; i++) {
3247            int flags = suggestionSpans[i].getFlags();
3248            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
3249                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
3250                spannable.removeSpan(suggestionSpans[i]);
3251            }
3252        }
3253    }
3254
3255    @Override
3256    public void onRestoreInstanceState(Parcelable state) {
3257        if (!(state instanceof SavedState)) {
3258            super.onRestoreInstanceState(state);
3259            return;
3260        }
3261
3262        SavedState ss = (SavedState)state;
3263        super.onRestoreInstanceState(ss.getSuperState());
3264
3265        // XXX restore buffer type too, as well as lots of other stuff
3266        if (ss.text != null) {
3267            setText(ss.text);
3268        }
3269
3270        if (ss.selStart >= 0 && ss.selEnd >= 0) {
3271            if (mText instanceof Spannable) {
3272                int len = mText.length();
3273
3274                if (ss.selStart > len || ss.selEnd > len) {
3275                    String restored = "";
3276
3277                    if (ss.text != null) {
3278                        restored = "(restored) ";
3279                    }
3280
3281                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
3282                          "/" + ss.selEnd + " out of range for " + restored +
3283                          "text " + mText);
3284                } else {
3285                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
3286
3287                    if (ss.frozenWithFocus) {
3288                        createEditorIfNeeded();
3289                        mEditor.mFrozenWithFocus = true;
3290                    }
3291                }
3292            }
3293        }
3294
3295        if (ss.error != null) {
3296            final CharSequence error = ss.error;
3297            // Display the error later, after the first layout pass
3298            post(new Runnable() {
3299                public void run() {
3300                    setError(error);
3301                }
3302            });
3303        }
3304    }
3305
3306    /**
3307     * Control whether this text view saves its entire text contents when
3308     * freezing to an icicle, in addition to dynamic state such as cursor
3309     * position.  By default this is false, not saving the text.  Set to true
3310     * if the text in the text view is not being saved somewhere else in
3311     * persistent storage (such as in a content provider) so that if the
3312     * view is later thawed the user will not lose their data.
3313     *
3314     * @param freezesText Controls whether a frozen icicle should include the
3315     * entire text data: true to include it, false to not.
3316     *
3317     * @attr ref android.R.styleable#TextView_freezesText
3318     */
3319    @android.view.RemotableViewMethod
3320    public void setFreezesText(boolean freezesText) {
3321        mFreezesText = freezesText;
3322    }
3323
3324    /**
3325     * Return whether this text view is including its entire text contents
3326     * in frozen icicles.
3327     *
3328     * @return Returns true if text is included, false if it isn't.
3329     *
3330     * @see #setFreezesText
3331     */
3332    public boolean getFreezesText() {
3333        return mFreezesText;
3334    }
3335
3336    ///////////////////////////////////////////////////////////////////////////
3337
3338    /**
3339     * Sets the Factory used to create new Editables.
3340     */
3341    public final void setEditableFactory(Editable.Factory factory) {
3342        mEditableFactory = factory;
3343        setText(mText);
3344    }
3345
3346    /**
3347     * Sets the Factory used to create new Spannables.
3348     */
3349    public final void setSpannableFactory(Spannable.Factory factory) {
3350        mSpannableFactory = factory;
3351        setText(mText);
3352    }
3353
3354    /**
3355     * Sets the string value of the TextView. TextView <em>does not</em> accept
3356     * HTML-like formatting, which you can do with text strings in XML resource files.
3357     * To style your strings, attach android.text.style.* objects to a
3358     * {@link android.text.SpannableString SpannableString}, or see the
3359     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
3360     * Available Resource Types</a> documentation for an example of setting
3361     * formatted text in the XML resource file.
3362     *
3363     * @attr ref android.R.styleable#TextView_text
3364     */
3365    @android.view.RemotableViewMethod
3366    public final void setText(CharSequence text) {
3367        setText(text, mBufferType);
3368    }
3369
3370    /**
3371     * Like {@link #setText(CharSequence)},
3372     * except that the cursor position (if any) is retained in the new text.
3373     *
3374     * @param text The new text to place in the text view.
3375     *
3376     * @see #setText(CharSequence)
3377     */
3378    @android.view.RemotableViewMethod
3379    public final void setTextKeepState(CharSequence text) {
3380        setTextKeepState(text, mBufferType);
3381    }
3382
3383    /**
3384     * Sets the text that this TextView is to display (see
3385     * {@link #setText(CharSequence)}) and also sets whether it is stored
3386     * in a styleable/spannable buffer and whether it is editable.
3387     *
3388     * @attr ref android.R.styleable#TextView_text
3389     * @attr ref android.R.styleable#TextView_bufferType
3390     */
3391    public void setText(CharSequence text, BufferType type) {
3392        setText(text, type, true, 0);
3393
3394        if (mCharWrapper != null) {
3395            mCharWrapper.mChars = null;
3396        }
3397    }
3398
3399    private void setText(CharSequence text, BufferType type,
3400                         boolean notifyBefore, int oldlen) {
3401        if (text == null) {
3402            text = "";
3403        }
3404
3405        // If suggestions are not enabled, remove the suggestion spans from the text
3406        if (!isSuggestionsEnabled()) {
3407            text = removeSuggestionSpans(text);
3408        }
3409
3410        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
3411
3412        if (text instanceof Spanned &&
3413            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
3414            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
3415                setHorizontalFadingEdgeEnabled(true);
3416                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
3417            } else {
3418                setHorizontalFadingEdgeEnabled(false);
3419                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
3420            }
3421            setEllipsize(TextUtils.TruncateAt.MARQUEE);
3422        }
3423
3424        int n = mFilters.length;
3425        for (int i = 0; i < n; i++) {
3426            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
3427            if (out != null) {
3428                text = out;
3429            }
3430        }
3431
3432        if (notifyBefore) {
3433            if (mText != null) {
3434                oldlen = mText.length();
3435                sendBeforeTextChanged(mText, 0, oldlen, text.length());
3436            } else {
3437                sendBeforeTextChanged("", 0, 0, text.length());
3438            }
3439        }
3440
3441        boolean needEditableForNotification = false;
3442
3443        if (mListeners != null && mListeners.size() != 0) {
3444            needEditableForNotification = true;
3445        }
3446
3447        if (type == BufferType.EDITABLE || getKeyListener() != null ||
3448                needEditableForNotification) {
3449            createEditorIfNeeded();
3450            Editable t = mEditableFactory.newEditable(text);
3451            text = t;
3452            setFilters(t, mFilters);
3453            InputMethodManager imm = InputMethodManager.peekInstance();
3454            if (imm != null) imm.restartInput(this);
3455        } else if (type == BufferType.SPANNABLE || mMovement != null) {
3456            text = mSpannableFactory.newSpannable(text);
3457        } else if (!(text instanceof CharWrapper)) {
3458            text = TextUtils.stringOrSpannedString(text);
3459        }
3460
3461        if (mAutoLinkMask != 0) {
3462            Spannable s2;
3463
3464            if (type == BufferType.EDITABLE || text instanceof Spannable) {
3465                s2 = (Spannable) text;
3466            } else {
3467                s2 = mSpannableFactory.newSpannable(text);
3468            }
3469
3470            if (Linkify.addLinks(s2, mAutoLinkMask)) {
3471                text = s2;
3472                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
3473
3474                /*
3475                 * We must go ahead and set the text before changing the
3476                 * movement method, because setMovementMethod() may call
3477                 * setText() again to try to upgrade the buffer type.
3478                 */
3479                mText = text;
3480
3481                // Do not change the movement method for text that support text selection as it
3482                // would prevent an arbitrary cursor displacement.
3483                if (mLinksClickable && !textCanBeSelected()) {
3484                    setMovementMethod(LinkMovementMethod.getInstance());
3485                }
3486            }
3487        }
3488
3489        mBufferType = type;
3490        mText = text;
3491
3492        if (mTransformation == null) {
3493            mTransformed = text;
3494        } else {
3495            mTransformed = mTransformation.getTransformation(text, this);
3496        }
3497
3498        final int textLength = text.length();
3499
3500        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
3501            Spannable sp = (Spannable) text;
3502
3503            // Remove any ChangeWatchers that might have come from other TextViews.
3504            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
3505            final int count = watchers.length;
3506            for (int i = 0; i < count; i++) {
3507                sp.removeSpan(watchers[i]);
3508            }
3509
3510            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
3511
3512            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
3513                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
3514
3515            if (mEditor != null) mEditor.addSpanWatchers(sp);
3516
3517            if (mTransformation != null) {
3518                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
3519            }
3520
3521            if (mMovement != null) {
3522                mMovement.initialize(this, (Spannable) text);
3523
3524                /*
3525                 * Initializing the movement method will have set the
3526                 * selection, so reset mSelectionMoved to keep that from
3527                 * interfering with the normal on-focus selection-setting.
3528                 */
3529                if (mEditor != null) mEditor.mSelectionMoved = false;
3530            }
3531        }
3532
3533        if (mLayout != null) {
3534            checkForRelayout();
3535        }
3536
3537        sendOnTextChanged(text, 0, oldlen, textLength);
3538        onTextChanged(text, 0, oldlen, textLength);
3539
3540        if (needEditableForNotification) {
3541            sendAfterTextChanged((Editable) text);
3542        }
3543
3544        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
3545        if (mEditor != null) mEditor.prepareCursorControllers();
3546    }
3547
3548    /**
3549     * Sets the TextView to display the specified slice of the specified
3550     * char array.  You must promise that you will not change the contents
3551     * of the array except for right before another call to setText(),
3552     * since the TextView has no way to know that the text
3553     * has changed and that it needs to invalidate and re-layout.
3554     */
3555    public final void setText(char[] text, int start, int len) {
3556        int oldlen = 0;
3557
3558        if (start < 0 || len < 0 || start + len > text.length) {
3559            throw new IndexOutOfBoundsException(start + ", " + len);
3560        }
3561
3562        /*
3563         * We must do the before-notification here ourselves because if
3564         * the old text is a CharWrapper we destroy it before calling
3565         * into the normal path.
3566         */
3567        if (mText != null) {
3568            oldlen = mText.length();
3569            sendBeforeTextChanged(mText, 0, oldlen, len);
3570        } else {
3571            sendBeforeTextChanged("", 0, 0, len);
3572        }
3573
3574        if (mCharWrapper == null) {
3575            mCharWrapper = new CharWrapper(text, start, len);
3576        } else {
3577            mCharWrapper.set(text, start, len);
3578        }
3579
3580        setText(mCharWrapper, mBufferType, false, oldlen);
3581    }
3582
3583    /**
3584     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
3585     * except that the cursor position (if any) is retained in the new text.
3586     *
3587     * @see #setText(CharSequence, android.widget.TextView.BufferType)
3588     */
3589    public final void setTextKeepState(CharSequence text, BufferType type) {
3590        int start = getSelectionStart();
3591        int end = getSelectionEnd();
3592        int len = text.length();
3593
3594        setText(text, type);
3595
3596        if (start >= 0 || end >= 0) {
3597            if (mText instanceof Spannable) {
3598                Selection.setSelection((Spannable) mText,
3599                                       Math.max(0, Math.min(start, len)),
3600                                       Math.max(0, Math.min(end, len)));
3601            }
3602        }
3603    }
3604
3605    @android.view.RemotableViewMethod
3606    public final void setText(int resid) {
3607        setText(getContext().getResources().getText(resid));
3608    }
3609
3610    public final void setText(int resid, BufferType type) {
3611        setText(getContext().getResources().getText(resid), type);
3612    }
3613
3614    /**
3615     * Sets the text to be displayed when the text of the TextView is empty.
3616     * Null means to use the normal empty text. The hint does not currently
3617     * participate in determining the size of the view.
3618     *
3619     * @attr ref android.R.styleable#TextView_hint
3620     */
3621    @android.view.RemotableViewMethod
3622    public final void setHint(CharSequence hint) {
3623        mHint = TextUtils.stringOrSpannedString(hint);
3624
3625        if (mLayout != null) {
3626            checkForRelayout();
3627        }
3628
3629        if (mText.length() == 0) {
3630            invalidate();
3631        }
3632
3633        // Invalidate display list if hint is currently used
3634        if (mEditor != null && mText.length() == 0 && mHint != null) {
3635            mEditor.invalidateTextDisplayList();
3636        }
3637    }
3638
3639    /**
3640     * Sets the text to be displayed when the text of the TextView is empty,
3641     * from a resource.
3642     *
3643     * @attr ref android.R.styleable#TextView_hint
3644     */
3645    @android.view.RemotableViewMethod
3646    public final void setHint(int resid) {
3647        setHint(getContext().getResources().getText(resid));
3648    }
3649
3650    /**
3651     * Returns the hint that is displayed when the text of the TextView
3652     * is empty.
3653     *
3654     * @attr ref android.R.styleable#TextView_hint
3655     */
3656    @ViewDebug.CapturedViewProperty
3657    public CharSequence getHint() {
3658        return mHint;
3659    }
3660
3661    boolean isSingleLine() {
3662        return mSingleLine;
3663    }
3664
3665    private static boolean isMultilineInputType(int type) {
3666        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
3667            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
3668    }
3669
3670    /**
3671     * Removes the suggestion spans.
3672     */
3673    CharSequence removeSuggestionSpans(CharSequence text) {
3674       if (text instanceof Spanned) {
3675           Spannable spannable;
3676           if (text instanceof Spannable) {
3677               spannable = (Spannable) text;
3678           } else {
3679               spannable = new SpannableString(text);
3680               text = spannable;
3681           }
3682
3683           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
3684           for (int i = 0; i < spans.length; i++) {
3685               spannable.removeSpan(spans[i]);
3686           }
3687       }
3688       return text;
3689    }
3690
3691    /**
3692     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
3693     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
3694     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
3695     * then a soft keyboard will not be displayed for this text view.
3696     *
3697     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
3698     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
3699     * type.
3700     *
3701     * @see #getInputType()
3702     * @see #setRawInputType(int)
3703     * @see android.text.InputType
3704     * @attr ref android.R.styleable#TextView_inputType
3705     */
3706    public void setInputType(int type) {
3707        final boolean wasPassword = isPasswordInputType(getInputType());
3708        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
3709        setInputType(type, false);
3710        final boolean isPassword = isPasswordInputType(type);
3711        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
3712        boolean forceUpdate = false;
3713        if (isPassword) {
3714            setTransformationMethod(PasswordTransformationMethod.getInstance());
3715            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
3716        } else if (isVisiblePassword) {
3717            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3718                forceUpdate = true;
3719            }
3720            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
3721        } else if (wasPassword || wasVisiblePassword) {
3722            // not in password mode, clean up typeface and transformation
3723            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
3724            if (mTransformation == PasswordTransformationMethod.getInstance()) {
3725                forceUpdate = true;
3726            }
3727        }
3728
3729        boolean singleLine = !isMultilineInputType(type);
3730
3731        // We need to update the single line mode if it has changed or we
3732        // were previously in password mode.
3733        if (mSingleLine != singleLine || forceUpdate) {
3734            // Change single line mode, but only change the transformation if
3735            // we are not in password mode.
3736            applySingleLine(singleLine, !isPassword, true);
3737        }
3738
3739        if (!isSuggestionsEnabled()) {
3740            mText = removeSuggestionSpans(mText);
3741        }
3742
3743        InputMethodManager imm = InputMethodManager.peekInstance();
3744        if (imm != null) imm.restartInput(this);
3745    }
3746
3747    /**
3748     * It would be better to rely on the input type for everything. A password inputType should have
3749     * a password transformation. We should hence use isPasswordInputType instead of this method.
3750     *
3751     * We should:
3752     * - Call setInputType in setKeyListener instead of changing the input type directly (which
3753     * would install the correct transformation).
3754     * - Refuse the installation of a non-password transformation in setTransformation if the input
3755     * type is password.
3756     *
3757     * However, this is like this for legacy reasons and we cannot break existing apps. This method
3758     * is useful since it matches what the user can see (obfuscated text or not).
3759     *
3760     * @return true if the current transformation method is of the password type.
3761     */
3762    private boolean hasPasswordTransformationMethod() {
3763        return mTransformation instanceof PasswordTransformationMethod;
3764    }
3765
3766    private static boolean isPasswordInputType(int inputType) {
3767        final int variation =
3768                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3769        return variation
3770                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
3771                || variation
3772                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
3773                || variation
3774                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
3775    }
3776
3777    private static boolean isVisiblePasswordInputType(int inputType) {
3778        final int variation =
3779                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
3780        return variation
3781                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
3782    }
3783
3784    /**
3785     * Directly change the content type integer of the text view, without
3786     * modifying any other state.
3787     * @see #setInputType(int)
3788     * @see android.text.InputType
3789     * @attr ref android.R.styleable#TextView_inputType
3790     */
3791    public void setRawInputType(int type) {
3792        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
3793        createEditorIfNeeded();
3794        mEditor.mInputType = type;
3795    }
3796
3797    private void setInputType(int type, boolean direct) {
3798        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
3799        KeyListener input;
3800        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
3801            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
3802            TextKeyListener.Capitalize cap;
3803            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
3804                cap = TextKeyListener.Capitalize.CHARACTERS;
3805            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
3806                cap = TextKeyListener.Capitalize.WORDS;
3807            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
3808                cap = TextKeyListener.Capitalize.SENTENCES;
3809            } else {
3810                cap = TextKeyListener.Capitalize.NONE;
3811            }
3812            input = TextKeyListener.getInstance(autotext, cap);
3813        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
3814            input = DigitsKeyListener.getInstance(
3815                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
3816                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
3817        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
3818            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
3819                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
3820                    input = DateKeyListener.getInstance();
3821                    break;
3822                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
3823                    input = TimeKeyListener.getInstance();
3824                    break;
3825                default:
3826                    input = DateTimeKeyListener.getInstance();
3827                    break;
3828            }
3829        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
3830            input = DialerKeyListener.getInstance();
3831        } else {
3832            input = TextKeyListener.getInstance();
3833        }
3834        setRawInputType(type);
3835        if (direct) {
3836            createEditorIfNeeded();
3837            mEditor.mKeyListener = input;
3838        } else {
3839            setKeyListenerOnly(input);
3840        }
3841    }
3842
3843    /**
3844     * Get the type of the editable content.
3845     *
3846     * @see #setInputType(int)
3847     * @see android.text.InputType
3848     */
3849    public int getInputType() {
3850        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
3851    }
3852
3853    /**
3854     * Change the editor type integer associated with the text view, which
3855     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
3856     * has focus.
3857     * @see #getImeOptions
3858     * @see android.view.inputmethod.EditorInfo
3859     * @attr ref android.R.styleable#TextView_imeOptions
3860     */
3861    public void setImeOptions(int imeOptions) {
3862        createEditorIfNeeded();
3863        mEditor.createInputContentTypeIfNeeded();
3864        mEditor.mInputContentType.imeOptions = imeOptions;
3865    }
3866
3867    /**
3868     * Get the type of the IME editor.
3869     *
3870     * @see #setImeOptions(int)
3871     * @see android.view.inputmethod.EditorInfo
3872     */
3873    public int getImeOptions() {
3874        return mEditor != null && mEditor.mInputContentType != null
3875                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
3876    }
3877
3878    /**
3879     * Change the custom IME action associated with the text view, which
3880     * will be reported to an IME with {@link EditorInfo#actionLabel}
3881     * and {@link EditorInfo#actionId} when it has focus.
3882     * @see #getImeActionLabel
3883     * @see #getImeActionId
3884     * @see android.view.inputmethod.EditorInfo
3885     * @attr ref android.R.styleable#TextView_imeActionLabel
3886     * @attr ref android.R.styleable#TextView_imeActionId
3887     */
3888    public void setImeActionLabel(CharSequence label, int actionId) {
3889        createEditorIfNeeded();
3890        mEditor.createInputContentTypeIfNeeded();
3891        mEditor.mInputContentType.imeActionLabel = label;
3892        mEditor.mInputContentType.imeActionId = actionId;
3893    }
3894
3895    /**
3896     * Get the IME action label previous set with {@link #setImeActionLabel}.
3897     *
3898     * @see #setImeActionLabel
3899     * @see android.view.inputmethod.EditorInfo
3900     */
3901    public CharSequence getImeActionLabel() {
3902        return mEditor != null && mEditor.mInputContentType != null
3903                ? mEditor.mInputContentType.imeActionLabel : null;
3904    }
3905
3906    /**
3907     * Get the IME action ID previous set with {@link #setImeActionLabel}.
3908     *
3909     * @see #setImeActionLabel
3910     * @see android.view.inputmethod.EditorInfo
3911     */
3912    public int getImeActionId() {
3913        return mEditor != null && mEditor.mInputContentType != null
3914                ? mEditor.mInputContentType.imeActionId : 0;
3915    }
3916
3917    /**
3918     * Set a special listener to be called when an action is performed
3919     * on the text view.  This will be called when the enter key is pressed,
3920     * or when an action supplied to the IME is selected by the user.  Setting
3921     * this means that the normal hard key event will not insert a newline
3922     * into the text view, even if it is multi-line; holding down the ALT
3923     * modifier will, however, allow the user to insert a newline character.
3924     */
3925    public void setOnEditorActionListener(OnEditorActionListener l) {
3926        createEditorIfNeeded();
3927        mEditor.createInputContentTypeIfNeeded();
3928        mEditor.mInputContentType.onEditorActionListener = l;
3929    }
3930
3931    /**
3932     * Called when an attached input method calls
3933     * {@link InputConnection#performEditorAction(int)
3934     * InputConnection.performEditorAction()}
3935     * for this text view.  The default implementation will call your action
3936     * listener supplied to {@link #setOnEditorActionListener}, or perform
3937     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
3938     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
3939     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
3940     * EditorInfo.IME_ACTION_DONE}.
3941     *
3942     * <p>For backwards compatibility, if no IME options have been set and the
3943     * text view would not normally advance focus on enter, then
3944     * the NEXT and DONE actions received here will be turned into an enter
3945     * key down/up pair to go through the normal key handling.
3946     *
3947     * @param actionCode The code of the action being performed.
3948     *
3949     * @see #setOnEditorActionListener
3950     */
3951    public void onEditorAction(int actionCode) {
3952        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
3953        if (ict != null) {
3954            if (ict.onEditorActionListener != null) {
3955                if (ict.onEditorActionListener.onEditorAction(this,
3956                        actionCode, null)) {
3957                    return;
3958                }
3959            }
3960
3961            // This is the handling for some default action.
3962            // Note that for backwards compatibility we don't do this
3963            // default handling if explicit ime options have not been given,
3964            // instead turning this into the normal enter key codes that an
3965            // app may be expecting.
3966            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
3967                View v = focusSearch(FOCUS_FORWARD);
3968                if (v != null) {
3969                    if (!v.requestFocus(FOCUS_FORWARD)) {
3970                        throw new IllegalStateException("focus search returned a view " +
3971                                "that wasn't able to take focus!");
3972                    }
3973                }
3974                return;
3975
3976            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
3977                View v = focusSearch(FOCUS_BACKWARD);
3978                if (v != null) {
3979                    if (!v.requestFocus(FOCUS_BACKWARD)) {
3980                        throw new IllegalStateException("focus search returned a view " +
3981                                "that wasn't able to take focus!");
3982                    }
3983                }
3984                return;
3985
3986            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
3987                InputMethodManager imm = InputMethodManager.peekInstance();
3988                if (imm != null && imm.isActive(this)) {
3989                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
3990                }
3991                return;
3992            }
3993        }
3994
3995        ViewRootImpl viewRootImpl = getViewRootImpl();
3996        if (viewRootImpl != null) {
3997            long eventTime = SystemClock.uptimeMillis();
3998            viewRootImpl.dispatchKeyFromIme(
3999                    new KeyEvent(eventTime, eventTime,
4000                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4001                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4002                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4003                    | KeyEvent.FLAG_EDITOR_ACTION));
4004            viewRootImpl.dispatchKeyFromIme(
4005                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4006                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4007                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4008                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4009                    | KeyEvent.FLAG_EDITOR_ACTION));
4010        }
4011    }
4012
4013    /**
4014     * Set the private content type of the text, which is the
4015     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4016     * field that will be filled in when creating an input connection.
4017     *
4018     * @see #getPrivateImeOptions()
4019     * @see EditorInfo#privateImeOptions
4020     * @attr ref android.R.styleable#TextView_privateImeOptions
4021     */
4022    public void setPrivateImeOptions(String type) {
4023        createEditorIfNeeded();
4024        mEditor.createInputContentTypeIfNeeded();
4025        mEditor.mInputContentType.privateImeOptions = type;
4026    }
4027
4028    /**
4029     * Get the private type of the content.
4030     *
4031     * @see #setPrivateImeOptions(String)
4032     * @see EditorInfo#privateImeOptions
4033     */
4034    public String getPrivateImeOptions() {
4035        return mEditor != null && mEditor.mInputContentType != null
4036                ? mEditor.mInputContentType.privateImeOptions : null;
4037    }
4038
4039    /**
4040     * Set the extra input data of the text, which is the
4041     * {@link EditorInfo#extras TextBoxAttribute.extras}
4042     * Bundle that will be filled in when creating an input connection.  The
4043     * given integer is the resource ID of an XML resource holding an
4044     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4045     *
4046     * @see #getInputExtras(boolean)
4047     * @see EditorInfo#extras
4048     * @attr ref android.R.styleable#TextView_editorExtras
4049     */
4050    public void setInputExtras(int xmlResId) throws XmlPullParserException, IOException {
4051        createEditorIfNeeded();
4052        XmlResourceParser parser = getResources().getXml(xmlResId);
4053        mEditor.createInputContentTypeIfNeeded();
4054        mEditor.mInputContentType.extras = new Bundle();
4055        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4056    }
4057
4058    /**
4059     * Retrieve the input extras currently associated with the text view, which
4060     * can be viewed as well as modified.
4061     *
4062     * @param create If true, the extras will be created if they don't already
4063     * exist.  Otherwise, null will be returned if none have been created.
4064     * @see #setInputExtras(int)
4065     * @see EditorInfo#extras
4066     * @attr ref android.R.styleable#TextView_editorExtras
4067     */
4068    public Bundle getInputExtras(boolean create) {
4069        if (mEditor == null && !create) return null;
4070        createEditorIfNeeded();
4071        if (mEditor.mInputContentType == null) {
4072            if (!create) return null;
4073            mEditor.createInputContentTypeIfNeeded();
4074        }
4075        if (mEditor.mInputContentType.extras == null) {
4076            if (!create) return null;
4077            mEditor.mInputContentType.extras = new Bundle();
4078        }
4079        return mEditor.mInputContentType.extras;
4080    }
4081
4082    /**
4083     * Returns the error message that was set to be displayed with
4084     * {@link #setError}, or <code>null</code> if no error was set
4085     * or if it the error was cleared by the widget after user input.
4086     */
4087    public CharSequence getError() {
4088        return mEditor == null ? null : mEditor.mError;
4089    }
4090
4091    /**
4092     * Sets the right-hand compound drawable of the TextView to the "error"
4093     * icon and sets an error message that will be displayed in a popup when
4094     * the TextView has focus.  The icon and error message will be reset to
4095     * null when any key events cause changes to the TextView's text.  If the
4096     * <code>error</code> is <code>null</code>, the error message and icon
4097     * will be cleared.
4098     */
4099    @android.view.RemotableViewMethod
4100    public void setError(CharSequence error) {
4101        if (error == null) {
4102            setError(null, null);
4103        } else {
4104            Drawable dr = getContext().getResources().
4105                getDrawable(com.android.internal.R.drawable.indicator_input_error);
4106
4107            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
4108            setError(error, dr);
4109        }
4110    }
4111
4112    /**
4113     * Sets the right-hand compound drawable of the TextView to the specified
4114     * icon and sets an error message that will be displayed in a popup when
4115     * the TextView has focus.  The icon and error message will be reset to
4116     * null when any key events cause changes to the TextView's text.  The
4117     * drawable must already have had {@link Drawable#setBounds} set on it.
4118     * If the <code>error</code> is <code>null</code>, the error message will
4119     * be cleared (and you should provide a <code>null</code> icon as well).
4120     */
4121    public void setError(CharSequence error, Drawable icon) {
4122        createEditorIfNeeded();
4123        mEditor.setError(error, icon);
4124    }
4125
4126    @Override
4127    protected boolean setFrame(int l, int t, int r, int b) {
4128        boolean result = super.setFrame(l, t, r, b);
4129
4130        if (mEditor != null) mEditor.setFrame();
4131
4132        restartMarqueeIfNeeded();
4133
4134        return result;
4135    }
4136
4137    private void restartMarqueeIfNeeded() {
4138        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4139            mRestartMarquee = false;
4140            startMarquee();
4141        }
4142    }
4143
4144    /**
4145     * Sets the list of input filters that will be used if the buffer is
4146     * Editable. Has no effect otherwise.
4147     *
4148     * @attr ref android.R.styleable#TextView_maxLength
4149     */
4150    public void setFilters(InputFilter[] filters) {
4151        if (filters == null) {
4152            throw new IllegalArgumentException();
4153        }
4154
4155        mFilters = filters;
4156
4157        if (mText instanceof Editable) {
4158            setFilters((Editable) mText, filters);
4159        }
4160    }
4161
4162    /**
4163     * Sets the list of input filters on the specified Editable,
4164     * and includes mInput in the list if it is an InputFilter.
4165     */
4166    private void setFilters(Editable e, InputFilter[] filters) {
4167        if (mEditor != null && mEditor.mKeyListener instanceof InputFilter) {
4168            InputFilter[] nf = new InputFilter[filters.length + 1];
4169
4170            System.arraycopy(filters, 0, nf, 0, filters.length);
4171            nf[filters.length] = (InputFilter) mEditor.mKeyListener;
4172
4173            e.setFilters(nf);
4174        } else {
4175            e.setFilters(filters);
4176        }
4177    }
4178
4179    /**
4180     * Returns the current list of input filters.
4181     *
4182     * @attr ref android.R.styleable#TextView_maxLength
4183     */
4184    public InputFilter[] getFilters() {
4185        return mFilters;
4186    }
4187
4188    /////////////////////////////////////////////////////////////////////////
4189
4190    int getVerticalOffset(boolean forceNormal) {
4191        int voffset = 0;
4192        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4193
4194        Layout l = mLayout;
4195        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4196            l = mHintLayout;
4197        }
4198
4199        if (gravity != Gravity.TOP) {
4200            int boxht;
4201
4202            if (l == mHintLayout) {
4203                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
4204                        getCompoundPaddingBottom();
4205            } else {
4206                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
4207                        getExtendedPaddingBottom();
4208            }
4209            int textht = l.getHeight();
4210
4211            if (textht < boxht) {
4212                if (gravity == Gravity.BOTTOM)
4213                    voffset = boxht - textht;
4214                else // (gravity == Gravity.CENTER_VERTICAL)
4215                    voffset = (boxht - textht) >> 1;
4216            }
4217        }
4218        return voffset;
4219    }
4220
4221    private int getBottomVerticalOffset(boolean forceNormal) {
4222        int voffset = 0;
4223        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4224
4225        Layout l = mLayout;
4226        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4227            l = mHintLayout;
4228        }
4229
4230        if (gravity != Gravity.BOTTOM) {
4231            int boxht;
4232
4233            if (l == mHintLayout) {
4234                boxht = getMeasuredHeight() - getCompoundPaddingTop() -
4235                        getCompoundPaddingBottom();
4236            } else {
4237                boxht = getMeasuredHeight() - getExtendedPaddingTop() -
4238                        getExtendedPaddingBottom();
4239            }
4240            int textht = l.getHeight();
4241
4242            if (textht < boxht) {
4243                if (gravity == Gravity.TOP)
4244                    voffset = boxht - textht;
4245                else // (gravity == Gravity.CENTER_VERTICAL)
4246                    voffset = (boxht - textht) >> 1;
4247            }
4248        }
4249        return voffset;
4250    }
4251
4252    void invalidateCursorPath() {
4253        if (mHighlightPathBogus) {
4254            invalidateCursor();
4255        } else {
4256            final int horizontalPadding = getCompoundPaddingLeft();
4257            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4258
4259            if (mEditor.mCursorCount == 0) {
4260                synchronized (TEMP_RECTF) {
4261                    /*
4262                     * The reason for this concern about the thickness of the
4263                     * cursor and doing the floor/ceil on the coordinates is that
4264                     * some EditTexts (notably textfields in the Browser) have
4265                     * anti-aliased text where not all the characters are
4266                     * necessarily at integer-multiple locations.  This should
4267                     * make sure the entire cursor gets invalidated instead of
4268                     * sometimes missing half a pixel.
4269                     */
4270                    float thick = FloatMath.ceil(mTextPaint.getStrokeWidth());
4271                    if (thick < 1.0f) {
4272                        thick = 1.0f;
4273                    }
4274
4275                    thick /= 2.0f;
4276
4277                    // mHighlightPath is guaranteed to be non null at that point.
4278                    mHighlightPath.computeBounds(TEMP_RECTF, false);
4279
4280                    invalidate((int) FloatMath.floor(horizontalPadding + TEMP_RECTF.left - thick),
4281                            (int) FloatMath.floor(verticalPadding + TEMP_RECTF.top - thick),
4282                            (int) FloatMath.ceil(horizontalPadding + TEMP_RECTF.right + thick),
4283                            (int) FloatMath.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
4284                }
4285            } else {
4286                for (int i = 0; i < mEditor.mCursorCount; i++) {
4287                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4288                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
4289                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
4290                }
4291            }
4292        }
4293    }
4294
4295    void invalidateCursor() {
4296        int where = getSelectionEnd();
4297
4298        invalidateCursor(where, where, where);
4299    }
4300
4301    private void invalidateCursor(int a, int b, int c) {
4302        if (a >= 0 || b >= 0 || c >= 0) {
4303            int start = Math.min(Math.min(a, b), c);
4304            int end = Math.max(Math.max(a, b), c);
4305            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
4306        }
4307    }
4308
4309    /**
4310     * Invalidates the region of text enclosed between the start and end text offsets.
4311     */
4312    void invalidateRegion(int start, int end, boolean invalidateCursor) {
4313        if (mLayout == null) {
4314            invalidate();
4315        } else {
4316                int lineStart = mLayout.getLineForOffset(start);
4317                int top = mLayout.getLineTop(lineStart);
4318
4319                // This is ridiculous, but the descent from the line above
4320                // can hang down into the line we really want to redraw,
4321                // so we have to invalidate part of the line above to make
4322                // sure everything that needs to be redrawn really is.
4323                // (But not the whole line above, because that would cause
4324                // the same problem with the descenders on the line above it!)
4325                if (lineStart > 0) {
4326                    top -= mLayout.getLineDescent(lineStart - 1);
4327                }
4328
4329                int lineEnd;
4330
4331                if (start == end)
4332                    lineEnd = lineStart;
4333                else
4334                    lineEnd = mLayout.getLineForOffset(end);
4335
4336                int bottom = mLayout.getLineBottom(lineEnd);
4337
4338                // mEditor can be null in case selection is set programmatically.
4339                if (invalidateCursor && mEditor != null) {
4340                    for (int i = 0; i < mEditor.mCursorCount; i++) {
4341                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4342                        top = Math.min(top, bounds.top);
4343                        bottom = Math.max(bottom, bounds.bottom);
4344                    }
4345                }
4346
4347                final int compoundPaddingLeft = getCompoundPaddingLeft();
4348                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4349
4350                int left, right;
4351                if (lineStart == lineEnd && !invalidateCursor) {
4352                    left = (int) mLayout.getPrimaryHorizontal(start);
4353                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
4354                    left += compoundPaddingLeft;
4355                    right += compoundPaddingLeft;
4356                } else {
4357                    // Rectangle bounding box when the region spans several lines
4358                    left = compoundPaddingLeft;
4359                    right = getWidth() - getCompoundPaddingRight();
4360                }
4361
4362                invalidate(mScrollX + left, verticalPadding + top,
4363                        mScrollX + right, verticalPadding + bottom);
4364        }
4365    }
4366
4367    private void registerForPreDraw() {
4368        if (!mPreDrawRegistered) {
4369            getViewTreeObserver().addOnPreDrawListener(this);
4370            mPreDrawRegistered = true;
4371        }
4372    }
4373
4374    /**
4375     * {@inheritDoc}
4376     */
4377    public boolean onPreDraw() {
4378        if (mLayout == null) {
4379            assumeLayout();
4380        }
4381
4382        boolean changed = false;
4383
4384        if (mMovement != null) {
4385            /* This code also provides auto-scrolling when a cursor is moved using a
4386             * CursorController (insertion point or selection limits).
4387             * For selection, ensure start or end is visible depending on controller's state.
4388             */
4389            int curs = getSelectionEnd();
4390            // Do not create the controller if it is not already created.
4391            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
4392                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
4393                curs = getSelectionStart();
4394            }
4395
4396            /*
4397             * TODO: This should really only keep the end in view if
4398             * it already was before the text changed.  I'm not sure
4399             * of a good way to tell from here if it was.
4400             */
4401            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
4402                curs = mText.length();
4403            }
4404
4405            if (curs >= 0) {
4406                changed = bringPointIntoView(curs);
4407            }
4408        } else {
4409            changed = bringTextIntoView();
4410        }
4411
4412        // This has to be checked here since:
4413        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
4414        //   a screen rotation) since layout is not yet initialized at that point.
4415        if (mEditor != null && mEditor.mCreatedWithASelection) {
4416            mEditor.startSelectionActionMode();
4417            mEditor.mCreatedWithASelection = false;
4418        }
4419
4420        // Phone specific code (there is no ExtractEditText on tablets).
4421        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
4422        // not be set. Do the test here instead.
4423        if (this instanceof ExtractEditText && hasSelection() && mEditor != null) {
4424            mEditor.startSelectionActionMode();
4425        }
4426
4427        getViewTreeObserver().removeOnPreDrawListener(this);
4428        mPreDrawRegistered = false;
4429
4430        return !changed;
4431    }
4432
4433    @Override
4434    protected void onAttachedToWindow() {
4435        super.onAttachedToWindow();
4436
4437        mTemporaryDetach = false;
4438
4439        // Resolve drawables as the layout direction has been resolved
4440        resolveDrawables();
4441
4442        if (mEditor != null) mEditor.onAttachedToWindow();
4443    }
4444
4445    @Override
4446    protected void onDetachedFromWindow() {
4447        super.onDetachedFromWindow();
4448
4449        if (mPreDrawRegistered) {
4450            getViewTreeObserver().removeOnPreDrawListener(this);
4451            mPreDrawRegistered = false;
4452        }
4453
4454        resetResolvedDrawables();
4455
4456        if (mEditor != null) mEditor.onDetachedFromWindow();
4457    }
4458
4459    @Override
4460    public void onScreenStateChanged(int screenState) {
4461        super.onScreenStateChanged(screenState);
4462        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
4463    }
4464
4465    @Override
4466    protected boolean isPaddingOffsetRequired() {
4467        return mShadowRadius != 0 || mDrawables != null;
4468    }
4469
4470    @Override
4471    protected int getLeftPaddingOffset() {
4472        return getCompoundPaddingLeft() - mPaddingLeft +
4473                (int) Math.min(0, mShadowDx - mShadowRadius);
4474    }
4475
4476    @Override
4477    protected int getTopPaddingOffset() {
4478        return (int) Math.min(0, mShadowDy - mShadowRadius);
4479    }
4480
4481    @Override
4482    protected int getBottomPaddingOffset() {
4483        return (int) Math.max(0, mShadowDy + mShadowRadius);
4484    }
4485
4486    @Override
4487    protected int getRightPaddingOffset() {
4488        return -(getCompoundPaddingRight() - mPaddingRight) +
4489                (int) Math.max(0, mShadowDx + mShadowRadius);
4490    }
4491
4492    @Override
4493    protected boolean verifyDrawable(Drawable who) {
4494        final boolean verified = super.verifyDrawable(who);
4495        if (!verified && mDrawables != null) {
4496            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
4497                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom ||
4498                    who == mDrawables.mDrawableStart || who == mDrawables.mDrawableEnd;
4499        }
4500        return verified;
4501    }
4502
4503    @Override
4504    public void jumpDrawablesToCurrentState() {
4505        super.jumpDrawablesToCurrentState();
4506        if (mDrawables != null) {
4507            if (mDrawables.mDrawableLeft != null) {
4508                mDrawables.mDrawableLeft.jumpToCurrentState();
4509            }
4510            if (mDrawables.mDrawableTop != null) {
4511                mDrawables.mDrawableTop.jumpToCurrentState();
4512            }
4513            if (mDrawables.mDrawableRight != null) {
4514                mDrawables.mDrawableRight.jumpToCurrentState();
4515            }
4516            if (mDrawables.mDrawableBottom != null) {
4517                mDrawables.mDrawableBottom.jumpToCurrentState();
4518            }
4519            if (mDrawables.mDrawableStart != null) {
4520                mDrawables.mDrawableStart.jumpToCurrentState();
4521            }
4522            if (mDrawables.mDrawableEnd != null) {
4523                mDrawables.mDrawableEnd.jumpToCurrentState();
4524            }
4525        }
4526    }
4527
4528    @Override
4529    public void invalidateDrawable(Drawable drawable) {
4530        if (verifyDrawable(drawable)) {
4531            final Rect dirty = drawable.getBounds();
4532            int scrollX = mScrollX;
4533            int scrollY = mScrollY;
4534
4535            // IMPORTANT: The coordinates below are based on the coordinates computed
4536            // for each compound drawable in onDraw(). Make sure to update each section
4537            // accordingly.
4538            final TextView.Drawables drawables = mDrawables;
4539            if (drawables != null) {
4540                if (drawable == drawables.mDrawableLeft) {
4541                    final int compoundPaddingTop = getCompoundPaddingTop();
4542                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4543                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4544
4545                    scrollX += mPaddingLeft;
4546                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
4547                } else if (drawable == drawables.mDrawableRight) {
4548                    final int compoundPaddingTop = getCompoundPaddingTop();
4549                    final int compoundPaddingBottom = getCompoundPaddingBottom();
4550                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4551
4552                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
4553                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
4554                } else if (drawable == drawables.mDrawableTop) {
4555                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4556                    final int compoundPaddingRight = getCompoundPaddingRight();
4557                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4558
4559                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
4560                    scrollY += mPaddingTop;
4561                } else if (drawable == drawables.mDrawableBottom) {
4562                    final int compoundPaddingLeft = getCompoundPaddingLeft();
4563                    final int compoundPaddingRight = getCompoundPaddingRight();
4564                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
4565
4566                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
4567                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
4568                }
4569            }
4570
4571            invalidate(dirty.left + scrollX, dirty.top + scrollY,
4572                    dirty.right + scrollX, dirty.bottom + scrollY);
4573        }
4574    }
4575
4576    /**
4577     * @hide
4578     */
4579    @Override
4580    public int getResolvedLayoutDirection(Drawable who) {
4581        if (who == null) return View.LAYOUT_DIRECTION_LTR;
4582        if (mDrawables != null) {
4583            final Drawables drawables = mDrawables;
4584            if (who == drawables.mDrawableLeft || who == drawables.mDrawableRight ||
4585                who == drawables.mDrawableTop || who == drawables.mDrawableBottom ||
4586                who == drawables.mDrawableStart || who == drawables.mDrawableEnd) {
4587                return getResolvedLayoutDirection();
4588            }
4589        }
4590        return super.getResolvedLayoutDirection(who);
4591    }
4592
4593    @Override
4594    public boolean hasOverlappingRendering() {
4595        return (getBackground() != null || mText instanceof Spannable || hasSelection());
4596    }
4597
4598    /**
4599     * When a TextView is used to display a useful piece of information to the user (such as a
4600     * contact's address), it should be made selectable, so that the user can select and copy this
4601     * content.
4602     *
4603     * Use {@link #setTextIsSelectable(boolean)} or the
4604     * {@link android.R.styleable#TextView_textIsSelectable} XML attribute to make this TextView
4605     * selectable (text is not selectable by default).
4606     *
4607     * Note that this method simply returns the state of this flag. Although this flag has to be set
4608     * in order to select text in non-editable TextView, the content of an {@link EditText} can
4609     * always be selected, independently of the value of this flag.
4610     *
4611     * @return True if the text displayed in this TextView can be selected by the user.
4612     *
4613     * @attr ref android.R.styleable#TextView_textIsSelectable
4614     */
4615    public boolean isTextSelectable() {
4616        return mEditor == null ? false : mEditor.mTextIsSelectable;
4617    }
4618
4619    /**
4620     * Sets whether or not (default) the content of this view is selectable by the user.
4621     *
4622     * Note that this methods affect the {@link #setFocusable(boolean)},
4623     * {@link #setFocusableInTouchMode(boolean)} {@link #setClickable(boolean)} and
4624     * {@link #setLongClickable(boolean)} states and you may want to restore these if they were
4625     * customized.
4626     *
4627     * See {@link #isTextSelectable} for details.
4628     *
4629     * @param selectable Whether or not the content of this TextView should be selectable.
4630     */
4631    public void setTextIsSelectable(boolean selectable) {
4632        if (!selectable && mEditor == null) return; // false is default value with no edit data
4633
4634        createEditorIfNeeded();
4635        if (mEditor.mTextIsSelectable == selectable) return;
4636
4637        mEditor.mTextIsSelectable = selectable;
4638        setFocusableInTouchMode(selectable);
4639        setFocusable(selectable);
4640        setClickable(selectable);
4641        setLongClickable(selectable);
4642
4643        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
4644
4645        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
4646        setText(getText(), selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
4647
4648        // Called by setText above, but safer in case of future code changes
4649        mEditor.prepareCursorControllers();
4650    }
4651
4652    @Override
4653    protected int[] onCreateDrawableState(int extraSpace) {
4654        final int[] drawableState;
4655
4656        if (mSingleLine) {
4657            drawableState = super.onCreateDrawableState(extraSpace);
4658        } else {
4659            drawableState = super.onCreateDrawableState(extraSpace + 1);
4660            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
4661        }
4662
4663        if (isTextSelectable()) {
4664            // Disable pressed state, which was introduced when TextView was made clickable.
4665            // Prevents text color change.
4666            // setClickable(false) would have a similar effect, but it also disables focus changes
4667            // and long press actions, which are both needed by text selection.
4668            final int length = drawableState.length;
4669            for (int i = 0; i < length; i++) {
4670                if (drawableState[i] == R.attr.state_pressed) {
4671                    final int[] nonPressedState = new int[length - 1];
4672                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
4673                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
4674                    return nonPressedState;
4675                }
4676            }
4677        }
4678
4679        return drawableState;
4680    }
4681
4682    private Path getUpdatedHighlightPath() {
4683        Path highlight = null;
4684        Paint highlightPaint = mHighlightPaint;
4685
4686        final int selStart = getSelectionStart();
4687        final int selEnd = getSelectionEnd();
4688        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
4689            if (selStart == selEnd) {
4690                if (mEditor != null && mEditor.isCursorVisible() &&
4691                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
4692                        (2 * Editor.BLINK) < Editor.BLINK) {
4693                    if (mHighlightPathBogus) {
4694                        if (mHighlightPath == null) mHighlightPath = new Path();
4695                        mHighlightPath.reset();
4696                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
4697                        mEditor.updateCursorsPositions();
4698                        mHighlightPathBogus = false;
4699                    }
4700
4701                    // XXX should pass to skin instead of drawing directly
4702                    highlightPaint.setColor(mCurTextColor);
4703                    highlightPaint.setStyle(Paint.Style.STROKE);
4704                    highlight = mHighlightPath;
4705                }
4706            } else {
4707                if (mHighlightPathBogus) {
4708                    if (mHighlightPath == null) mHighlightPath = new Path();
4709                    mHighlightPath.reset();
4710                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4711                    mHighlightPathBogus = false;
4712                }
4713
4714                // XXX should pass to skin instead of drawing directly
4715                highlightPaint.setColor(mHighlightColor);
4716                highlightPaint.setStyle(Paint.Style.FILL);
4717
4718                highlight = mHighlightPath;
4719            }
4720        }
4721        return highlight;
4722    }
4723
4724    @Override
4725    protected void onDraw(Canvas canvas) {
4726        restartMarqueeIfNeeded();
4727
4728        // Draw the background for this view
4729        super.onDraw(canvas);
4730
4731        final int compoundPaddingLeft = getCompoundPaddingLeft();
4732        final int compoundPaddingTop = getCompoundPaddingTop();
4733        final int compoundPaddingRight = getCompoundPaddingRight();
4734        final int compoundPaddingBottom = getCompoundPaddingBottom();
4735        final int scrollX = mScrollX;
4736        final int scrollY = mScrollY;
4737        final int right = mRight;
4738        final int left = mLeft;
4739        final int bottom = mBottom;
4740        final int top = mTop;
4741
4742        final Drawables dr = mDrawables;
4743        if (dr != null) {
4744            /*
4745             * Compound, not extended, because the icon is not clipped
4746             * if the text height is smaller.
4747             */
4748
4749            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
4750            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
4751
4752            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4753            // Make sure to update invalidateDrawable() when changing this code.
4754            if (dr.mDrawableLeft != null) {
4755                canvas.save();
4756                canvas.translate(scrollX + mPaddingLeft,
4757                                 scrollY + compoundPaddingTop +
4758                                 (vspace - dr.mDrawableHeightLeft) / 2);
4759                dr.mDrawableLeft.draw(canvas);
4760                canvas.restore();
4761            }
4762
4763            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4764            // Make sure to update invalidateDrawable() when changing this code.
4765            if (dr.mDrawableRight != null) {
4766                canvas.save();
4767                canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight,
4768                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
4769                dr.mDrawableRight.draw(canvas);
4770                canvas.restore();
4771            }
4772
4773            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4774            // Make sure to update invalidateDrawable() when changing this code.
4775            if (dr.mDrawableTop != null) {
4776                canvas.save();
4777                canvas.translate(scrollX + compoundPaddingLeft +
4778                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
4779                dr.mDrawableTop.draw(canvas);
4780                canvas.restore();
4781            }
4782
4783            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
4784            // Make sure to update invalidateDrawable() when changing this code.
4785            if (dr.mDrawableBottom != null) {
4786                canvas.save();
4787                canvas.translate(scrollX + compoundPaddingLeft +
4788                        (hspace - dr.mDrawableWidthBottom) / 2,
4789                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
4790                dr.mDrawableBottom.draw(canvas);
4791                canvas.restore();
4792            }
4793        }
4794
4795        int color = mCurTextColor;
4796
4797        if (mLayout == null) {
4798            assumeLayout();
4799        }
4800
4801        Layout layout = mLayout;
4802
4803        if (mHint != null && mText.length() == 0) {
4804            if (mHintTextColor != null) {
4805                color = mCurHintTextColor;
4806            }
4807
4808            layout = mHintLayout;
4809        }
4810
4811        mTextPaint.setColor(color);
4812        mTextPaint.drawableState = getDrawableState();
4813
4814        canvas.save();
4815        /*  Would be faster if we didn't have to do this. Can we chop the
4816            (displayable) text so that we don't need to do this ever?
4817        */
4818
4819        int extendedPaddingTop = getExtendedPaddingTop();
4820        int extendedPaddingBottom = getExtendedPaddingBottom();
4821
4822        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
4823        final int maxScrollY = mLayout.getHeight() - vspace;
4824
4825        float clipLeft = compoundPaddingLeft + scrollX;
4826        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
4827        float clipRight = right - left - compoundPaddingRight + scrollX;
4828        float clipBottom = bottom - top + scrollY -
4829                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
4830
4831        if (mShadowRadius != 0) {
4832            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
4833            clipRight += Math.max(0, mShadowDx + mShadowRadius);
4834
4835            clipTop += Math.min(0, mShadowDy - mShadowRadius);
4836            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
4837        }
4838
4839        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
4840
4841        int voffsetText = 0;
4842        int voffsetCursor = 0;
4843
4844        // translate in by our padding
4845        /* shortcircuit calling getVerticaOffset() */
4846        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4847            voffsetText = getVerticalOffset(false);
4848            voffsetCursor = getVerticalOffset(true);
4849        }
4850        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
4851
4852        final int layoutDirection = getResolvedLayoutDirection();
4853        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
4854        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
4855                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
4856            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
4857                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
4858                canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft -
4859                        getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f);
4860            }
4861
4862            if (mMarquee != null && mMarquee.isRunning()) {
4863                canvas.translate(-mMarquee.mScroll, 0.0f);
4864            }
4865        }
4866
4867        final int cursorOffsetVertical = voffsetCursor - voffsetText;
4868
4869        Path highlight = getUpdatedHighlightPath();
4870        if (mEditor != null) {
4871            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
4872        } else {
4873            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4874        }
4875
4876        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
4877            canvas.translate((int) mMarquee.getGhostOffset(), 0.0f);
4878            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
4879        }
4880
4881        canvas.restore();
4882    }
4883
4884    @Override
4885    public void getFocusedRect(Rect r) {
4886        if (mLayout == null) {
4887            super.getFocusedRect(r);
4888            return;
4889        }
4890
4891        int selEnd = getSelectionEnd();
4892        if (selEnd < 0) {
4893            super.getFocusedRect(r);
4894            return;
4895        }
4896
4897        int selStart = getSelectionStart();
4898        if (selStart < 0 || selStart >= selEnd) {
4899            int line = mLayout.getLineForOffset(selEnd);
4900            r.top = mLayout.getLineTop(line);
4901            r.bottom = mLayout.getLineBottom(line);
4902            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
4903            r.right = r.left + 4;
4904        } else {
4905            int lineStart = mLayout.getLineForOffset(selStart);
4906            int lineEnd = mLayout.getLineForOffset(selEnd);
4907            r.top = mLayout.getLineTop(lineStart);
4908            r.bottom = mLayout.getLineBottom(lineEnd);
4909            if (lineStart == lineEnd) {
4910                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
4911                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
4912            } else {
4913                // Selection extends across multiple lines -- make the focused
4914                // rect cover the entire width.
4915                if (mHighlightPathBogus) {
4916                    if (mHighlightPath == null) mHighlightPath = new Path();
4917                    mHighlightPath.reset();
4918                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
4919                    mHighlightPathBogus = false;
4920                }
4921                synchronized (TEMP_RECTF) {
4922                    mHighlightPath.computeBounds(TEMP_RECTF, true);
4923                    r.left = (int)TEMP_RECTF.left-1;
4924                    r.right = (int)TEMP_RECTF.right+1;
4925                }
4926            }
4927        }
4928
4929        // Adjust for padding and gravity.
4930        int paddingLeft = getCompoundPaddingLeft();
4931        int paddingTop = getExtendedPaddingTop();
4932        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4933            paddingTop += getVerticalOffset(false);
4934        }
4935        r.offset(paddingLeft, paddingTop);
4936        int paddingBottom = getExtendedPaddingBottom();
4937        r.bottom += paddingBottom;
4938    }
4939
4940    /**
4941     * Return the number of lines of text, or 0 if the internal Layout has not
4942     * been built.
4943     */
4944    public int getLineCount() {
4945        return mLayout != null ? mLayout.getLineCount() : 0;
4946    }
4947
4948    /**
4949     * Return the baseline for the specified line (0...getLineCount() - 1)
4950     * If bounds is not null, return the top, left, right, bottom extents
4951     * of the specified line in it. If the internal Layout has not been built,
4952     * return 0 and set bounds to (0, 0, 0, 0)
4953     * @param line which line to examine (0..getLineCount() - 1)
4954     * @param bounds Optional. If not null, it returns the extent of the line
4955     * @return the Y-coordinate of the baseline
4956     */
4957    public int getLineBounds(int line, Rect bounds) {
4958        if (mLayout == null) {
4959            if (bounds != null) {
4960                bounds.set(0, 0, 0, 0);
4961            }
4962            return 0;
4963        }
4964        else {
4965            int baseline = mLayout.getLineBounds(line, bounds);
4966
4967            int voffset = getExtendedPaddingTop();
4968            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4969                voffset += getVerticalOffset(true);
4970            }
4971            if (bounds != null) {
4972                bounds.offset(getCompoundPaddingLeft(), voffset);
4973            }
4974            return baseline + voffset;
4975        }
4976    }
4977
4978    @Override
4979    public int getBaseline() {
4980        if (mLayout == null) {
4981            return super.getBaseline();
4982        }
4983
4984        int voffset = 0;
4985        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
4986            voffset = getVerticalOffset(true);
4987        }
4988
4989        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
4990    }
4991
4992    /**
4993     * @hide
4994     */
4995    @Override
4996    protected int getFadeTop(boolean offsetRequired) {
4997        if (mLayout == null) return 0;
4998
4999        int voffset = 0;
5000        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5001            voffset = getVerticalOffset(true);
5002        }
5003
5004        if (offsetRequired) voffset += getTopPaddingOffset();
5005
5006        return getExtendedPaddingTop() + voffset;
5007    }
5008
5009    /**
5010     * @hide
5011     */
5012    @Override
5013    protected int getFadeHeight(boolean offsetRequired) {
5014        return mLayout != null ? mLayout.getHeight() : 0;
5015    }
5016
5017    @Override
5018    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
5019        if (keyCode == KeyEvent.KEYCODE_BACK) {
5020            boolean isInSelectionMode = mEditor != null && mEditor.mSelectionActionMode != null;
5021
5022            if (isInSelectionMode) {
5023                if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
5024                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5025                    if (state != null) {
5026                        state.startTracking(event, this);
5027                    }
5028                    return true;
5029                } else if (event.getAction() == KeyEvent.ACTION_UP) {
5030                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5031                    if (state != null) {
5032                        state.handleUpEvent(event);
5033                    }
5034                    if (event.isTracking() && !event.isCanceled()) {
5035                        stopSelectionActionMode();
5036                        return true;
5037                    }
5038                }
5039            }
5040        }
5041        return super.onKeyPreIme(keyCode, event);
5042    }
5043
5044    @Override
5045    public boolean onKeyDown(int keyCode, KeyEvent event) {
5046        int which = doKeyDown(keyCode, event, null);
5047        if (which == 0) {
5048            // Go through default dispatching.
5049            return super.onKeyDown(keyCode, event);
5050        }
5051
5052        return true;
5053    }
5054
5055    @Override
5056    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
5057        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
5058
5059        int which = doKeyDown(keyCode, down, event);
5060        if (which == 0) {
5061            // Go through default dispatching.
5062            return super.onKeyMultiple(keyCode, repeatCount, event);
5063        }
5064        if (which == -1) {
5065            // Consumed the whole thing.
5066            return true;
5067        }
5068
5069        repeatCount--;
5070
5071        // We are going to dispatch the remaining events to either the input
5072        // or movement method.  To do this, we will just send a repeated stream
5073        // of down and up events until we have done the complete repeatCount.
5074        // It would be nice if those interfaces had an onKeyMultiple() method,
5075        // but adding that is a more complicated change.
5076        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
5077        if (which == 1) {
5078            // mEditor and mEditor.mInput are not null from doKeyDown
5079            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5080            while (--repeatCount > 0) {
5081                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
5082                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5083            }
5084            hideErrorIfUnchanged();
5085
5086        } else if (which == 2) {
5087            // mMovement is not null from doKeyDown
5088            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5089            while (--repeatCount > 0) {
5090                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
5091                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5092            }
5093        }
5094
5095        return true;
5096    }
5097
5098    /**
5099     * Returns true if pressing ENTER in this field advances focus instead
5100     * of inserting the character.  This is true mostly in single-line fields,
5101     * but also in mail addresses and subjects which will display on multiple
5102     * lines but where it doesn't make sense to insert newlines.
5103     */
5104    private boolean shouldAdvanceFocusOnEnter() {
5105        if (getKeyListener() == null) {
5106            return false;
5107        }
5108
5109        if (mSingleLine) {
5110            return true;
5111        }
5112
5113        if (mEditor != null &&
5114                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5115            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5116            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
5117                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
5118                return true;
5119            }
5120        }
5121
5122        return false;
5123    }
5124
5125    /**
5126     * Returns true if pressing TAB in this field advances focus instead
5127     * of inserting the character.  Insert tabs only in multi-line editors.
5128     */
5129    private boolean shouldAdvanceFocusOnTab() {
5130        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
5131                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5132            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5133            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
5134                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
5135                return false;
5136            }
5137        }
5138        return true;
5139    }
5140
5141    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
5142        if (!isEnabled()) {
5143            return 0;
5144        }
5145
5146        switch (keyCode) {
5147            case KeyEvent.KEYCODE_ENTER:
5148                if (event.hasNoModifiers()) {
5149                    // When mInputContentType is set, we know that we are
5150                    // running in a "modern" cupcake environment, so don't need
5151                    // to worry about the application trying to capture
5152                    // enter key events.
5153                    if (mEditor != null && mEditor.mInputContentType != null) {
5154                        // If there is an action listener, given them a
5155                        // chance to consume the event.
5156                        if (mEditor.mInputContentType.onEditorActionListener != null &&
5157                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5158                                this, EditorInfo.IME_NULL, event)) {
5159                            mEditor.mInputContentType.enterDown = true;
5160                            // We are consuming the enter key for them.
5161                            return -1;
5162                        }
5163                    }
5164
5165                    // If our editor should move focus when enter is pressed, or
5166                    // this is a generated event from an IME action button, then
5167                    // don't let it be inserted into the text.
5168                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5169                            || shouldAdvanceFocusOnEnter()) {
5170                        if (hasOnClickListeners()) {
5171                            return 0;
5172                        }
5173                        return -1;
5174                    }
5175                }
5176                break;
5177
5178            case KeyEvent.KEYCODE_DPAD_CENTER:
5179                if (event.hasNoModifiers()) {
5180                    if (shouldAdvanceFocusOnEnter()) {
5181                        return 0;
5182                    }
5183                }
5184                break;
5185
5186            case KeyEvent.KEYCODE_TAB:
5187                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
5188                    if (shouldAdvanceFocusOnTab()) {
5189                        return 0;
5190                    }
5191                }
5192                break;
5193
5194                // Has to be done on key down (and not on key up) to correctly be intercepted.
5195            case KeyEvent.KEYCODE_BACK:
5196                if (mEditor != null && mEditor.mSelectionActionMode != null) {
5197                    stopSelectionActionMode();
5198                    return -1;
5199                }
5200                break;
5201        }
5202
5203        if (mEditor != null && mEditor.mKeyListener != null) {
5204            resetErrorChangedFlag();
5205
5206            boolean doDown = true;
5207            if (otherEvent != null) {
5208                try {
5209                    beginBatchEdit();
5210                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
5211                            otherEvent);
5212                    hideErrorIfUnchanged();
5213                    doDown = false;
5214                    if (handled) {
5215                        return -1;
5216                    }
5217                } catch (AbstractMethodError e) {
5218                    // onKeyOther was added after 1.0, so if it isn't
5219                    // implemented we need to try to dispatch as a regular down.
5220                } finally {
5221                    endBatchEdit();
5222                }
5223            }
5224
5225            if (doDown) {
5226                beginBatchEdit();
5227                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
5228                        keyCode, event);
5229                endBatchEdit();
5230                hideErrorIfUnchanged();
5231                if (handled) return 1;
5232            }
5233        }
5234
5235        // bug 650865: sometimes we get a key event before a layout.
5236        // don't try to move around if we don't know the layout.
5237
5238        if (mMovement != null && mLayout != null) {
5239            boolean doDown = true;
5240            if (otherEvent != null) {
5241                try {
5242                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
5243                            otherEvent);
5244                    doDown = false;
5245                    if (handled) {
5246                        return -1;
5247                    }
5248                } catch (AbstractMethodError e) {
5249                    // onKeyOther was added after 1.0, so if it isn't
5250                    // implemented we need to try to dispatch as a regular down.
5251                }
5252            }
5253            if (doDown) {
5254                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event))
5255                    return 2;
5256            }
5257        }
5258
5259        return 0;
5260    }
5261
5262    /**
5263     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
5264     * can be recorded.
5265     * @hide
5266     */
5267    public void resetErrorChangedFlag() {
5268        /*
5269         * Keep track of what the error was before doing the input
5270         * so that if an input filter changed the error, we leave
5271         * that error showing.  Otherwise, we take down whatever
5272         * error was showing when the user types something.
5273         */
5274        if (mEditor != null) mEditor.mErrorWasChanged = false;
5275    }
5276
5277    /**
5278     * @hide
5279     */
5280    public void hideErrorIfUnchanged() {
5281        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
5282            setError(null, null);
5283        }
5284    }
5285
5286    @Override
5287    public boolean onKeyUp(int keyCode, KeyEvent event) {
5288        if (!isEnabled()) {
5289            return super.onKeyUp(keyCode, event);
5290        }
5291
5292        switch (keyCode) {
5293            case KeyEvent.KEYCODE_DPAD_CENTER:
5294                if (event.hasNoModifiers()) {
5295                    /*
5296                     * If there is a click listener, just call through to
5297                     * super, which will invoke it.
5298                     *
5299                     * If there isn't a click listener, try to show the soft
5300                     * input method.  (It will also
5301                     * call performClick(), but that won't do anything in
5302                     * this case.)
5303                     */
5304                    if (!hasOnClickListeners()) {
5305                        if (mMovement != null && mText instanceof Editable
5306                                && mLayout != null && onCheckIsTextEditor()) {
5307                            InputMethodManager imm = InputMethodManager.peekInstance();
5308                            viewClicked(imm);
5309                            if (imm != null && getShowSoftInputOnFocus()) {
5310                                imm.showSoftInput(this, 0);
5311                            }
5312                        }
5313                    }
5314                }
5315                return super.onKeyUp(keyCode, event);
5316
5317            case KeyEvent.KEYCODE_ENTER:
5318                if (event.hasNoModifiers()) {
5319                    if (mEditor != null && mEditor.mInputContentType != null
5320                            && mEditor.mInputContentType.onEditorActionListener != null
5321                            && mEditor.mInputContentType.enterDown) {
5322                        mEditor.mInputContentType.enterDown = false;
5323                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5324                                this, EditorInfo.IME_NULL, event)) {
5325                            return true;
5326                        }
5327                    }
5328
5329                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5330                            || shouldAdvanceFocusOnEnter()) {
5331                        /*
5332                         * If there is a click listener, just call through to
5333                         * super, which will invoke it.
5334                         *
5335                         * If there isn't a click listener, try to advance focus,
5336                         * but still call through to super, which will reset the
5337                         * pressed state and longpress state.  (It will also
5338                         * call performClick(), but that won't do anything in
5339                         * this case.)
5340                         */
5341                        if (!hasOnClickListeners()) {
5342                            View v = focusSearch(FOCUS_DOWN);
5343
5344                            if (v != null) {
5345                                if (!v.requestFocus(FOCUS_DOWN)) {
5346                                    throw new IllegalStateException(
5347                                            "focus search returned a view " +
5348                                            "that wasn't able to take focus!");
5349                                }
5350
5351                                /*
5352                                 * Return true because we handled the key; super
5353                                 * will return false because there was no click
5354                                 * listener.
5355                                 */
5356                                super.onKeyUp(keyCode, event);
5357                                return true;
5358                            } else if ((event.getFlags()
5359                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
5360                                // No target for next focus, but make sure the IME
5361                                // if this came from it.
5362                                InputMethodManager imm = InputMethodManager.peekInstance();
5363                                if (imm != null && imm.isActive(this)) {
5364                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
5365                                }
5366                            }
5367                        }
5368                    }
5369                    return super.onKeyUp(keyCode, event);
5370                }
5371                break;
5372        }
5373
5374        if (mEditor != null && mEditor.mKeyListener != null)
5375            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
5376                return true;
5377
5378        if (mMovement != null && mLayout != null)
5379            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
5380                return true;
5381
5382        return super.onKeyUp(keyCode, event);
5383    }
5384
5385    @Override
5386    public boolean onCheckIsTextEditor() {
5387        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
5388    }
5389
5390    @Override
5391    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
5392        if (onCheckIsTextEditor() && isEnabled()) {
5393            mEditor.createInputMethodStateIfNeeded();
5394            outAttrs.inputType = getInputType();
5395            if (mEditor.mInputContentType != null) {
5396                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
5397                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
5398                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
5399                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
5400                outAttrs.extras = mEditor.mInputContentType.extras;
5401            } else {
5402                outAttrs.imeOptions = EditorInfo.IME_NULL;
5403            }
5404            if (focusSearch(FOCUS_DOWN) != null) {
5405                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
5406            }
5407            if (focusSearch(FOCUS_UP) != null) {
5408                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
5409            }
5410            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
5411                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
5412                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
5413                    // An action has not been set, but the enter key will move to
5414                    // the next focus, so set the action to that.
5415                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
5416                } else {
5417                    // An action has not been set, and there is no focus to move
5418                    // to, so let's just supply a "done" action.
5419                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
5420                }
5421                if (!shouldAdvanceFocusOnEnter()) {
5422                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5423                }
5424            }
5425            if (isMultilineInputType(outAttrs.inputType)) {
5426                // Multi-line text editors should always show an enter key.
5427                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5428            }
5429            outAttrs.hintText = mHint;
5430            if (mText instanceof Editable) {
5431                InputConnection ic = new EditableInputConnection(this);
5432                outAttrs.initialSelStart = getSelectionStart();
5433                outAttrs.initialSelEnd = getSelectionEnd();
5434                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
5435                return ic;
5436            }
5437        }
5438        return null;
5439    }
5440
5441    /**
5442     * If this TextView contains editable content, extract a portion of it
5443     * based on the information in <var>request</var> in to <var>outText</var>.
5444     * @return Returns true if the text was successfully extracted, else false.
5445     */
5446    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
5447        createEditorIfNeeded();
5448        return mEditor.extractText(request, outText);
5449    }
5450
5451    /**
5452     * This is used to remove all style-impacting spans from text before new
5453     * extracted text is being replaced into it, so that we don't have any
5454     * lingering spans applied during the replace.
5455     */
5456    static void removeParcelableSpans(Spannable spannable, int start, int end) {
5457        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
5458        int i = spans.length;
5459        while (i > 0) {
5460            i--;
5461            spannable.removeSpan(spans[i]);
5462        }
5463    }
5464
5465    /**
5466     * Apply to this text view the given extracted text, as previously
5467     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
5468     */
5469    public void setExtractedText(ExtractedText text) {
5470        Editable content = getEditableText();
5471        if (text.text != null) {
5472            if (content == null) {
5473                setText(text.text, TextView.BufferType.EDITABLE);
5474            } else if (text.partialStartOffset < 0) {
5475                removeParcelableSpans(content, 0, content.length());
5476                content.replace(0, content.length(), text.text);
5477            } else {
5478                final int N = content.length();
5479                int start = text.partialStartOffset;
5480                if (start > N) start = N;
5481                int end = text.partialEndOffset;
5482                if (end > N) end = N;
5483                removeParcelableSpans(content, start, end);
5484                content.replace(start, end, text.text);
5485            }
5486        }
5487
5488        // Now set the selection position...  make sure it is in range, to
5489        // avoid crashes.  If this is a partial update, it is possible that
5490        // the underlying text may have changed, causing us problems here.
5491        // Also we just don't want to trust clients to do the right thing.
5492        Spannable sp = (Spannable)getText();
5493        final int N = sp.length();
5494        int start = text.selectionStart;
5495        if (start < 0) start = 0;
5496        else if (start > N) start = N;
5497        int end = text.selectionEnd;
5498        if (end < 0) end = 0;
5499        else if (end > N) end = N;
5500        Selection.setSelection(sp, start, end);
5501
5502        // Finally, update the selection mode.
5503        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
5504            MetaKeyKeyListener.startSelecting(this, sp);
5505        } else {
5506            MetaKeyKeyListener.stopSelecting(this, sp);
5507        }
5508    }
5509
5510    /**
5511     * @hide
5512     */
5513    public void setExtracting(ExtractedTextRequest req) {
5514        if (mEditor.mInputMethodState != null) {
5515            mEditor.mInputMethodState.mExtractedTextRequest = req;
5516        }
5517        // This would stop a possible selection mode, but no such mode is started in case
5518        // extracted mode will start. Some text is selected though, and will trigger an action mode
5519        // in the extracted view.
5520        mEditor.hideControllers();
5521    }
5522
5523    /**
5524     * Called by the framework in response to a text completion from
5525     * the current input method, provided by it calling
5526     * {@link InputConnection#commitCompletion
5527     * InputConnection.commitCompletion()}.  The default implementation does
5528     * nothing; text views that are supporting auto-completion should override
5529     * this to do their desired behavior.
5530     *
5531     * @param text The auto complete text the user has selected.
5532     */
5533    public void onCommitCompletion(CompletionInfo text) {
5534        // intentionally empty
5535    }
5536
5537    /**
5538     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
5539     * a dictionnary) from the current input method, provided by it calling
5540     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
5541     * implementation flashes the background of the corrected word to provide feedback to the user.
5542     *
5543     * @param info The auto correct info about the text that was corrected.
5544     */
5545    public void onCommitCorrection(CorrectionInfo info) {
5546        if (mEditor != null) mEditor.onCommitCorrection(info);
5547    }
5548
5549    public void beginBatchEdit() {
5550        if (mEditor != null) mEditor.beginBatchEdit();
5551    }
5552
5553    public void endBatchEdit() {
5554        if (mEditor != null) mEditor.endBatchEdit();
5555    }
5556
5557    /**
5558     * Called by the framework in response to a request to begin a batch
5559     * of edit operations through a call to link {@link #beginBatchEdit()}.
5560     */
5561    public void onBeginBatchEdit() {
5562        // intentionally empty
5563    }
5564
5565    /**
5566     * Called by the framework in response to a request to end a batch
5567     * of edit operations through a call to link {@link #endBatchEdit}.
5568     */
5569    public void onEndBatchEdit() {
5570        // intentionally empty
5571    }
5572
5573    /**
5574     * Called by the framework in response to a private command from the
5575     * current method, provided by it calling
5576     * {@link InputConnection#performPrivateCommand
5577     * InputConnection.performPrivateCommand()}.
5578     *
5579     * @param action The action name of the command.
5580     * @param data Any additional data for the command.  This may be null.
5581     * @return Return true if you handled the command, else false.
5582     */
5583    public boolean onPrivateIMECommand(String action, Bundle data) {
5584        return false;
5585    }
5586
5587    private void nullLayouts() {
5588        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
5589            mSavedLayout = (BoringLayout) mLayout;
5590        }
5591        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
5592            mSavedHintLayout = (BoringLayout) mHintLayout;
5593        }
5594
5595        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
5596
5597        mBoring = mHintBoring = null;
5598
5599        // Since it depends on the value of mLayout
5600        if (mEditor != null) mEditor.prepareCursorControllers();
5601    }
5602
5603    /**
5604     * Make a new Layout based on the already-measured size of the view,
5605     * on the assumption that it was measured correctly at some point.
5606     */
5607    private void assumeLayout() {
5608        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
5609
5610        if (width < 1) {
5611            width = 0;
5612        }
5613
5614        int physicalWidth = width;
5615
5616        if (mHorizontallyScrolling) {
5617            width = VERY_WIDE;
5618        }
5619
5620        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
5621                      physicalWidth, false);
5622    }
5623
5624    @Override
5625    public void onResolvedLayoutDirectionReset() {
5626        if (mLayoutAlignment != null) {
5627            int resolvedTextAlignment = getResolvedTextAlignment();
5628            if (resolvedTextAlignment == TEXT_ALIGNMENT_VIEW_START ||
5629                 resolvedTextAlignment == TEXT_ALIGNMENT_VIEW_END) {
5630                mLayoutAlignment = null;
5631            }
5632        }
5633    }
5634
5635    private Layout.Alignment getLayoutAlignment() {
5636        if (mLayoutAlignment == null) {
5637            int textAlign = getResolvedTextAlignment();
5638            switch (textAlign) {
5639                case TEXT_ALIGNMENT_GRAVITY:
5640                    switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
5641                        case Gravity.START:
5642                            mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5643                            break;
5644                        case Gravity.END:
5645                            mLayoutAlignment = Layout.Alignment.ALIGN_OPPOSITE;
5646                            break;
5647                        case Gravity.LEFT:
5648                            mLayoutAlignment = Layout.Alignment.ALIGN_LEFT;
5649                            break;
5650                        case Gravity.RIGHT:
5651                            mLayoutAlignment = Layout.Alignment.ALIGN_RIGHT;
5652                            break;
5653                        case Gravity.CENTER_HORIZONTAL:
5654                            mLayoutAlignment = Layout.Alignment.ALIGN_CENTER;
5655                            break;
5656                        default:
5657                            mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5658                            break;
5659                    }
5660                    break;
5661                case TEXT_ALIGNMENT_TEXT_START:
5662                    mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5663                    break;
5664                case TEXT_ALIGNMENT_TEXT_END:
5665                    mLayoutAlignment = Layout.Alignment.ALIGN_OPPOSITE;
5666                    break;
5667                case TEXT_ALIGNMENT_CENTER:
5668                    mLayoutAlignment = Layout.Alignment.ALIGN_CENTER;
5669                    break;
5670                case TEXT_ALIGNMENT_VIEW_START:
5671                    mLayoutAlignment = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
5672                            Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
5673                    break;
5674                case TEXT_ALIGNMENT_VIEW_END:
5675                    mLayoutAlignment = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
5676                            Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
5677                    break;
5678                case TEXT_ALIGNMENT_INHERIT:
5679                    // This should never happen as we have already resolved the text alignment
5680                    // but better safe than sorry so we just fall through
5681                default:
5682                    mLayoutAlignment = Layout.Alignment.ALIGN_NORMAL;
5683                    break;
5684            }
5685        }
5686        return mLayoutAlignment;
5687    }
5688
5689    /**
5690     * The width passed in is now the desired layout width,
5691     * not the full view width with padding.
5692     * {@hide}
5693     */
5694    protected void makeNewLayout(int wantWidth, int hintWidth,
5695                                 BoringLayout.Metrics boring,
5696                                 BoringLayout.Metrics hintBoring,
5697                                 int ellipsisWidth, boolean bringIntoView) {
5698        stopMarquee();
5699
5700        // Update "old" cached values
5701        mOldMaximum = mMaximum;
5702        mOldMaxMode = mMaxMode;
5703
5704        mHighlightPathBogus = true;
5705
5706        if (wantWidth < 0) {
5707            wantWidth = 0;
5708        }
5709        if (hintWidth < 0) {
5710            hintWidth = 0;
5711        }
5712
5713        Layout.Alignment alignment = getLayoutAlignment();
5714        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
5715        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
5716                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
5717        TruncateAt effectiveEllipsize = mEllipsize;
5718        if (mEllipsize == TruncateAt.MARQUEE &&
5719                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5720            effectiveEllipsize = TruncateAt.END_SMALL;
5721        }
5722
5723        if (mTextDir == null) {
5724            resolveTextDirection();
5725        }
5726
5727        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
5728                effectiveEllipsize, effectiveEllipsize == mEllipsize);
5729        if (switchEllipsize) {
5730            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
5731                    TruncateAt.END : TruncateAt.MARQUEE;
5732            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
5733                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
5734        }
5735
5736        shouldEllipsize = mEllipsize != null;
5737        mHintLayout = null;
5738
5739        if (mHint != null) {
5740            if (shouldEllipsize) hintWidth = wantWidth;
5741
5742            if (hintBoring == UNKNOWN_BORING) {
5743                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
5744                                                   mHintBoring);
5745                if (hintBoring != null) {
5746                    mHintBoring = hintBoring;
5747                }
5748            }
5749
5750            if (hintBoring != null) {
5751                if (hintBoring.width <= hintWidth &&
5752                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
5753                    if (mSavedHintLayout != null) {
5754                        mHintLayout = mSavedHintLayout.
5755                                replaceOrMake(mHint, mTextPaint,
5756                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5757                                hintBoring, mIncludePad);
5758                    } else {
5759                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5760                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5761                                hintBoring, mIncludePad);
5762                    }
5763
5764                    mSavedHintLayout = (BoringLayout) mHintLayout;
5765                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
5766                    if (mSavedHintLayout != null) {
5767                        mHintLayout = mSavedHintLayout.
5768                                replaceOrMake(mHint, mTextPaint,
5769                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5770                                hintBoring, mIncludePad, mEllipsize,
5771                                ellipsisWidth);
5772                    } else {
5773                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
5774                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
5775                                hintBoring, mIncludePad, mEllipsize,
5776                                ellipsisWidth);
5777                    }
5778                } else if (shouldEllipsize) {
5779                    mHintLayout = new StaticLayout(mHint,
5780                                0, mHint.length(),
5781                                mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5782                                mSpacingAdd, mIncludePad, mEllipsize,
5783                                ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5784                } else {
5785                    mHintLayout = new StaticLayout(mHint, mTextPaint,
5786                            hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5787                            mIncludePad);
5788                }
5789            } else if (shouldEllipsize) {
5790                mHintLayout = new StaticLayout(mHint,
5791                            0, mHint.length(),
5792                            mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
5793                            mSpacingAdd, mIncludePad, mEllipsize,
5794                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5795            } else {
5796                mHintLayout = new StaticLayout(mHint, mTextPaint,
5797                        hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5798                        mIncludePad);
5799            }
5800        }
5801
5802        if (bringIntoView) {
5803            registerForPreDraw();
5804        }
5805
5806        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5807            if (!compressText(ellipsisWidth)) {
5808                final int height = mLayoutParams.height;
5809                // If the size of the view does not depend on the size of the text, try to
5810                // start the marquee immediately
5811                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
5812                    startMarquee();
5813                } else {
5814                    // Defer the start of the marquee until we know our width (see setFrame())
5815                    mRestartMarquee = true;
5816                }
5817            }
5818        }
5819
5820        // CursorControllers need a non-null mLayout
5821        if (mEditor != null) mEditor.prepareCursorControllers();
5822    }
5823
5824    private Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
5825            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
5826            boolean useSaved) {
5827        Layout result = null;
5828        if (mText instanceof Spannable) {
5829            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
5830                    alignment, mTextDir, mSpacingMult,
5831                    mSpacingAdd, mIncludePad, getKeyListener() == null ? effectiveEllipsize : null,
5832                            ellipsisWidth);
5833        } else {
5834            if (boring == UNKNOWN_BORING) {
5835                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
5836                if (boring != null) {
5837                    mBoring = boring;
5838                }
5839            }
5840
5841            if (boring != null) {
5842                if (boring.width <= wantWidth &&
5843                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
5844                    if (useSaved && mSavedLayout != null) {
5845                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
5846                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5847                                boring, mIncludePad);
5848                    } else {
5849                        result = BoringLayout.make(mTransformed, mTextPaint,
5850                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5851                                boring, mIncludePad);
5852                    }
5853
5854                    if (useSaved) {
5855                        mSavedLayout = (BoringLayout) result;
5856                    }
5857                } else if (shouldEllipsize && boring.width <= wantWidth) {
5858                    if (useSaved && mSavedLayout != null) {
5859                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
5860                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5861                                boring, mIncludePad, effectiveEllipsize,
5862                                ellipsisWidth);
5863                    } else {
5864                        result = BoringLayout.make(mTransformed, mTextPaint,
5865                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
5866                                boring, mIncludePad, effectiveEllipsize,
5867                                ellipsisWidth);
5868                    }
5869                } else if (shouldEllipsize) {
5870                    result = new StaticLayout(mTransformed,
5871                            0, mTransformed.length(),
5872                            mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
5873                            mSpacingAdd, mIncludePad, effectiveEllipsize,
5874                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5875                } else {
5876                    result = new StaticLayout(mTransformed, mTextPaint,
5877                            wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5878                            mIncludePad);
5879                }
5880            } else if (shouldEllipsize) {
5881                result = new StaticLayout(mTransformed,
5882                        0, mTransformed.length(),
5883                        mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
5884                        mSpacingAdd, mIncludePad, effectiveEllipsize,
5885                        ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
5886            } else {
5887                result = new StaticLayout(mTransformed, mTextPaint,
5888                        wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
5889                        mIncludePad);
5890            }
5891        }
5892        return result;
5893    }
5894
5895    private boolean compressText(float width) {
5896        if (isHardwareAccelerated()) return false;
5897
5898        // Only compress the text if it hasn't been compressed by the previous pass
5899        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
5900                mTextPaint.getTextScaleX() == 1.0f) {
5901            final float textWidth = mLayout.getLineWidth(0);
5902            final float overflow = (textWidth + 1.0f - width) / width;
5903            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
5904                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
5905                post(new Runnable() {
5906                    public void run() {
5907                        requestLayout();
5908                    }
5909                });
5910                return true;
5911            }
5912        }
5913
5914        return false;
5915    }
5916
5917    private static int desired(Layout layout) {
5918        int n = layout.getLineCount();
5919        CharSequence text = layout.getText();
5920        float max = 0;
5921
5922        // if any line was wrapped, we can't use it.
5923        // but it's ok for the last line not to have a newline
5924
5925        for (int i = 0; i < n - 1; i++) {
5926            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
5927                return -1;
5928        }
5929
5930        for (int i = 0; i < n; i++) {
5931            max = Math.max(max, layout.getLineWidth(i));
5932        }
5933
5934        return (int) FloatMath.ceil(max);
5935    }
5936
5937    /**
5938     * Set whether the TextView includes extra top and bottom padding to make
5939     * room for accents that go above the normal ascent and descent.
5940     * The default is true.
5941     *
5942     * @see #getIncludeFontPadding()
5943     *
5944     * @attr ref android.R.styleable#TextView_includeFontPadding
5945     */
5946    public void setIncludeFontPadding(boolean includepad) {
5947        if (mIncludePad != includepad) {
5948            mIncludePad = includepad;
5949
5950            if (mLayout != null) {
5951                nullLayouts();
5952                requestLayout();
5953                invalidate();
5954            }
5955        }
5956    }
5957
5958    /**
5959     * Gets whether the TextView includes extra top and bottom padding to make
5960     * room for accents that go above the normal ascent and descent.
5961     *
5962     * @see #setIncludeFontPadding(boolean)
5963     *
5964     * @attr ref android.R.styleable#TextView_includeFontPadding
5965     */
5966    public boolean getIncludeFontPadding() {
5967        return mIncludePad;
5968    }
5969
5970    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
5971
5972    @Override
5973    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
5974        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
5975        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
5976        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
5977        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
5978
5979        int width;
5980        int height;
5981
5982        BoringLayout.Metrics boring = UNKNOWN_BORING;
5983        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
5984
5985        if (mTextDir == null) {
5986            resolveTextDirection();
5987        }
5988
5989        int des = -1;
5990        boolean fromexisting = false;
5991
5992        if (widthMode == MeasureSpec.EXACTLY) {
5993            // Parent has told us how big to be. So be it.
5994            width = widthSize;
5995        } else {
5996            if (mLayout != null && mEllipsize == null) {
5997                des = desired(mLayout);
5998            }
5999
6000            if (des < 0) {
6001                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6002                if (boring != null) {
6003                    mBoring = boring;
6004                }
6005            } else {
6006                fromexisting = true;
6007            }
6008
6009            if (boring == null || boring == UNKNOWN_BORING) {
6010                if (des < 0) {
6011                    des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
6012                }
6013                width = des;
6014            } else {
6015                width = boring.width;
6016            }
6017
6018            final Drawables dr = mDrawables;
6019            if (dr != null) {
6020                width = Math.max(width, dr.mDrawableWidthTop);
6021                width = Math.max(width, dr.mDrawableWidthBottom);
6022            }
6023
6024            if (mHint != null) {
6025                int hintDes = -1;
6026                int hintWidth;
6027
6028                if (mHintLayout != null && mEllipsize == null) {
6029                    hintDes = desired(mHintLayout);
6030                }
6031
6032                if (hintDes < 0) {
6033                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
6034                    if (hintBoring != null) {
6035                        mHintBoring = hintBoring;
6036                    }
6037                }
6038
6039                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
6040                    if (hintDes < 0) {
6041                        hintDes = (int) FloatMath.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
6042                    }
6043                    hintWidth = hintDes;
6044                } else {
6045                    hintWidth = hintBoring.width;
6046                }
6047
6048                if (hintWidth > width) {
6049                    width = hintWidth;
6050                }
6051            }
6052
6053            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
6054
6055            if (mMaxWidthMode == EMS) {
6056                width = Math.min(width, mMaxWidth * getLineHeight());
6057            } else {
6058                width = Math.min(width, mMaxWidth);
6059            }
6060
6061            if (mMinWidthMode == EMS) {
6062                width = Math.max(width, mMinWidth * getLineHeight());
6063            } else {
6064                width = Math.max(width, mMinWidth);
6065            }
6066
6067            // Check against our minimum width
6068            width = Math.max(width, getSuggestedMinimumWidth());
6069
6070            if (widthMode == MeasureSpec.AT_MOST) {
6071                width = Math.min(widthSize, width);
6072            }
6073        }
6074
6075        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
6076        int unpaddedWidth = want;
6077
6078        if (mHorizontallyScrolling) want = VERY_WIDE;
6079
6080        int hintWant = want;
6081        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
6082
6083        if (mLayout == null) {
6084            makeNewLayout(want, hintWant, boring, hintBoring,
6085                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6086        } else {
6087            final boolean layoutChanged = (mLayout.getWidth() != want) ||
6088                    (hintWidth != hintWant) ||
6089                    (mLayout.getEllipsizedWidth() !=
6090                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
6091
6092            final boolean widthChanged = (mHint == null) &&
6093                    (mEllipsize == null) &&
6094                    (want > mLayout.getWidth()) &&
6095                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
6096
6097            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
6098
6099            if (layoutChanged || maximumChanged) {
6100                if (!maximumChanged && widthChanged) {
6101                    mLayout.increaseWidthTo(want);
6102                } else {
6103                    makeNewLayout(want, hintWant, boring, hintBoring,
6104                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6105                }
6106            } else {
6107                // Nothing has changed
6108            }
6109        }
6110
6111        if (heightMode == MeasureSpec.EXACTLY) {
6112            // Parent has told us how big to be. So be it.
6113            height = heightSize;
6114            mDesiredHeightAtMeasure = -1;
6115        } else {
6116            int desired = getDesiredHeight();
6117
6118            height = desired;
6119            mDesiredHeightAtMeasure = desired;
6120
6121            if (heightMode == MeasureSpec.AT_MOST) {
6122                height = Math.min(desired, heightSize);
6123            }
6124        }
6125
6126        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
6127        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
6128            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
6129        }
6130
6131        /*
6132         * We didn't let makeNewLayout() register to bring the cursor into view,
6133         * so do it here if there is any possibility that it is needed.
6134         */
6135        if (mMovement != null ||
6136            mLayout.getWidth() > unpaddedWidth ||
6137            mLayout.getHeight() > unpaddedHeight) {
6138            registerForPreDraw();
6139        } else {
6140            scrollTo(0, 0);
6141        }
6142
6143        setMeasuredDimension(width, height);
6144    }
6145
6146    private int getDesiredHeight() {
6147        return Math.max(
6148                getDesiredHeight(mLayout, true),
6149                getDesiredHeight(mHintLayout, mEllipsize != null));
6150    }
6151
6152    private int getDesiredHeight(Layout layout, boolean cap) {
6153        if (layout == null) {
6154            return 0;
6155        }
6156
6157        int linecount = layout.getLineCount();
6158        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
6159        int desired = layout.getLineTop(linecount);
6160
6161        final Drawables dr = mDrawables;
6162        if (dr != null) {
6163            desired = Math.max(desired, dr.mDrawableHeightLeft);
6164            desired = Math.max(desired, dr.mDrawableHeightRight);
6165        }
6166
6167        desired += pad;
6168
6169        if (mMaxMode == LINES) {
6170            /*
6171             * Don't cap the hint to a certain number of lines.
6172             * (Do cap it, though, if we have a maximum pixel height.)
6173             */
6174            if (cap) {
6175                if (linecount > mMaximum) {
6176                    desired = layout.getLineTop(mMaximum);
6177
6178                    if (dr != null) {
6179                        desired = Math.max(desired, dr.mDrawableHeightLeft);
6180                        desired = Math.max(desired, dr.mDrawableHeightRight);
6181                    }
6182
6183                    desired += pad;
6184                    linecount = mMaximum;
6185                }
6186            }
6187        } else {
6188            desired = Math.min(desired, mMaximum);
6189        }
6190
6191        if (mMinMode == LINES) {
6192            if (linecount < mMinimum) {
6193                desired += getLineHeight() * (mMinimum - linecount);
6194            }
6195        } else {
6196            desired = Math.max(desired, mMinimum);
6197        }
6198
6199        // Check against our minimum height
6200        desired = Math.max(desired, getSuggestedMinimumHeight());
6201
6202        return desired;
6203    }
6204
6205    /**
6206     * Check whether a change to the existing text layout requires a
6207     * new view layout.
6208     */
6209    private void checkForResize() {
6210        boolean sizeChanged = false;
6211
6212        if (mLayout != null) {
6213            // Check if our width changed
6214            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
6215                sizeChanged = true;
6216                invalidate();
6217            }
6218
6219            // Check if our height changed
6220            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
6221                int desiredHeight = getDesiredHeight();
6222
6223                if (desiredHeight != this.getHeight()) {
6224                    sizeChanged = true;
6225                }
6226            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
6227                if (mDesiredHeightAtMeasure >= 0) {
6228                    int desiredHeight = getDesiredHeight();
6229
6230                    if (desiredHeight != mDesiredHeightAtMeasure) {
6231                        sizeChanged = true;
6232                    }
6233                }
6234            }
6235        }
6236
6237        if (sizeChanged) {
6238            requestLayout();
6239            // caller will have already invalidated
6240        }
6241    }
6242
6243    /**
6244     * Check whether entirely new text requires a new view layout
6245     * or merely a new text layout.
6246     */
6247    private void checkForRelayout() {
6248        // If we have a fixed width, we can just swap in a new text layout
6249        // if the text height stays the same or if the view height is fixed.
6250
6251        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
6252                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
6253                (mHint == null || mHintLayout != null) &&
6254                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
6255            // Static width, so try making a new text layout.
6256
6257            int oldht = mLayout.getHeight();
6258            int want = mLayout.getWidth();
6259            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
6260
6261            /*
6262             * No need to bring the text into view, since the size is not
6263             * changing (unless we do the requestLayout(), in which case it
6264             * will happen at measure).
6265             */
6266            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
6267                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
6268                          false);
6269
6270            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
6271                // In a fixed-height view, so use our new text layout.
6272                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
6273                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
6274                    invalidate();
6275                    return;
6276                }
6277
6278                // Dynamic height, but height has stayed the same,
6279                // so use our new text layout.
6280                if (mLayout.getHeight() == oldht &&
6281                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
6282                    invalidate();
6283                    return;
6284                }
6285            }
6286
6287            // We lose: the height has changed and we have a dynamic height.
6288            // Request a new view layout using our new text layout.
6289            requestLayout();
6290            invalidate();
6291        } else {
6292            // Dynamic width, so we have no choice but to request a new
6293            // view layout with a new text layout.
6294            nullLayouts();
6295            requestLayout();
6296            invalidate();
6297        }
6298    }
6299
6300    @Override
6301    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
6302        super.onLayout(changed, left, top, right, bottom);
6303        if (changed && mEditor != null) mEditor.invalidateTextDisplayList();
6304    }
6305
6306    private boolean isShowingHint() {
6307        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
6308    }
6309
6310    /**
6311     * Returns true if anything changed.
6312     */
6313    private boolean bringTextIntoView() {
6314        Layout layout = isShowingHint() ? mHintLayout : mLayout;
6315        int line = 0;
6316        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6317            line = layout.getLineCount() - 1;
6318        }
6319
6320        Layout.Alignment a = layout.getParagraphAlignment(line);
6321        int dir = layout.getParagraphDirection(line);
6322        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6323        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6324        int ht = layout.getHeight();
6325
6326        int scrollx, scrolly;
6327
6328        // Convert to left, center, or right alignment.
6329        if (a == Layout.Alignment.ALIGN_NORMAL) {
6330            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
6331                Layout.Alignment.ALIGN_RIGHT;
6332        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
6333            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
6334                Layout.Alignment.ALIGN_LEFT;
6335        }
6336
6337        if (a == Layout.Alignment.ALIGN_CENTER) {
6338            /*
6339             * Keep centered if possible, or, if it is too wide to fit,
6340             * keep leading edge in view.
6341             */
6342
6343            int left = (int) FloatMath.floor(layout.getLineLeft(line));
6344            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6345
6346            if (right - left < hspace) {
6347                scrollx = (right + left) / 2 - hspace / 2;
6348            } else {
6349                if (dir < 0) {
6350                    scrollx = right - hspace;
6351                } else {
6352                    scrollx = left;
6353                }
6354            }
6355        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
6356            int right = (int) FloatMath.ceil(layout.getLineRight(line));
6357            scrollx = right - hspace;
6358        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
6359            scrollx = (int) FloatMath.floor(layout.getLineLeft(line));
6360        }
6361
6362        if (ht < vspace) {
6363            scrolly = 0;
6364        } else {
6365            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6366                scrolly = ht - vspace;
6367            } else {
6368                scrolly = 0;
6369            }
6370        }
6371
6372        if (scrollx != mScrollX || scrolly != mScrollY) {
6373            scrollTo(scrollx, scrolly);
6374            return true;
6375        } else {
6376            return false;
6377        }
6378    }
6379
6380    /**
6381     * Move the point, specified by the offset, into the view if it is needed.
6382     * This has to be called after layout. Returns true if anything changed.
6383     */
6384    public boolean bringPointIntoView(int offset) {
6385        boolean changed = false;
6386
6387        Layout layout = isShowingHint() ? mHintLayout: mLayout;
6388
6389        if (layout == null) return changed;
6390
6391        int line = layout.getLineForOffset(offset);
6392
6393        // FIXME: Is it okay to truncate this, or should we round?
6394        final int x = (int)layout.getPrimaryHorizontal(offset);
6395        final int top = layout.getLineTop(line);
6396        final int bottom = layout.getLineTop(line + 1);
6397
6398        int left = (int) FloatMath.floor(layout.getLineLeft(line));
6399        int right = (int) FloatMath.ceil(layout.getLineRight(line));
6400        int ht = layout.getHeight();
6401
6402        int grav;
6403
6404        switch (layout.getParagraphAlignment(line)) {
6405            case ALIGN_LEFT:
6406                grav = 1;
6407                break;
6408            case ALIGN_RIGHT:
6409                grav = -1;
6410                break;
6411            case ALIGN_NORMAL:
6412                grav = layout.getParagraphDirection(line);
6413                break;
6414            case ALIGN_OPPOSITE:
6415                grav = -layout.getParagraphDirection(line);
6416                break;
6417            case ALIGN_CENTER:
6418            default:
6419                grav = 0;
6420                break;
6421        }
6422
6423        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6424        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6425
6426        int hslack = (bottom - top) / 2;
6427        int vslack = hslack;
6428
6429        if (vslack > vspace / 4)
6430            vslack = vspace / 4;
6431        if (hslack > hspace / 4)
6432            hslack = hspace / 4;
6433
6434        int hs = mScrollX;
6435        int vs = mScrollY;
6436
6437        if (top - vs < vslack)
6438            vs = top - vslack;
6439        if (bottom - vs > vspace - vslack)
6440            vs = bottom - (vspace - vslack);
6441        if (ht - vs < vspace)
6442            vs = ht - vspace;
6443        if (0 - vs > 0)
6444            vs = 0;
6445
6446        if (grav != 0) {
6447            if (x - hs < hslack) {
6448                hs = x - hslack;
6449            }
6450            if (x - hs > hspace - hslack) {
6451                hs = x - (hspace - hslack);
6452            }
6453        }
6454
6455        if (grav < 0) {
6456            if (left - hs > 0)
6457                hs = left;
6458            if (right - hs < hspace)
6459                hs = right - hspace;
6460        } else if (grav > 0) {
6461            if (right - hs < hspace)
6462                hs = right - hspace;
6463            if (left - hs > 0)
6464                hs = left;
6465        } else /* grav == 0 */ {
6466            if (right - left <= hspace) {
6467                /*
6468                 * If the entire text fits, center it exactly.
6469                 */
6470                hs = left - (hspace - (right - left)) / 2;
6471            } else if (x > right - hslack) {
6472                /*
6473                 * If we are near the right edge, keep the right edge
6474                 * at the edge of the view.
6475                 */
6476                hs = right - hspace;
6477            } else if (x < left + hslack) {
6478                /*
6479                 * If we are near the left edge, keep the left edge
6480                 * at the edge of the view.
6481                 */
6482                hs = left;
6483            } else if (left > hs) {
6484                /*
6485                 * Is there whitespace visible at the left?  Fix it if so.
6486                 */
6487                hs = left;
6488            } else if (right < hs + hspace) {
6489                /*
6490                 * Is there whitespace visible at the right?  Fix it if so.
6491                 */
6492                hs = right - hspace;
6493            } else {
6494                /*
6495                 * Otherwise, float as needed.
6496                 */
6497                if (x - hs < hslack) {
6498                    hs = x - hslack;
6499                }
6500                if (x - hs > hspace - hslack) {
6501                    hs = x - (hspace - hslack);
6502                }
6503            }
6504        }
6505
6506        if (hs != mScrollX || vs != mScrollY) {
6507            if (mScroller == null) {
6508                scrollTo(hs, vs);
6509            } else {
6510                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
6511                int dx = hs - mScrollX;
6512                int dy = vs - mScrollY;
6513
6514                if (duration > ANIMATED_SCROLL_GAP) {
6515                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
6516                    awakenScrollBars(mScroller.getDuration());
6517                    invalidate();
6518                } else {
6519                    if (!mScroller.isFinished()) {
6520                        mScroller.abortAnimation();
6521                    }
6522
6523                    scrollBy(dx, dy);
6524                }
6525
6526                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
6527            }
6528
6529            changed = true;
6530        }
6531
6532        if (isFocused()) {
6533            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
6534            // requestRectangleOnScreen() is in terms of content coordinates.
6535
6536            // The offsets here are to ensure the rectangle we are using is
6537            // within our view bounds, in case the cursor is on the far left
6538            // or right.  If it isn't withing the bounds, then this request
6539            // will be ignored.
6540            if (mTempRect == null) mTempRect = new Rect();
6541            mTempRect.set(x - 2, top, x + 2, bottom);
6542            getInterestingRect(mTempRect, line);
6543            mTempRect.offset(mScrollX, mScrollY);
6544
6545            if (requestRectangleOnScreen(mTempRect)) {
6546                changed = true;
6547            }
6548        }
6549
6550        return changed;
6551    }
6552
6553    /**
6554     * Move the cursor, if needed, so that it is at an offset that is visible
6555     * to the user.  This will not move the cursor if it represents more than
6556     * one character (a selection range).  This will only work if the
6557     * TextView contains spannable text; otherwise it will do nothing.
6558     *
6559     * @return True if the cursor was actually moved, false otherwise.
6560     */
6561    public boolean moveCursorToVisibleOffset() {
6562        if (!(mText instanceof Spannable)) {
6563            return false;
6564        }
6565        int start = getSelectionStart();
6566        int end = getSelectionEnd();
6567        if (start != end) {
6568            return false;
6569        }
6570
6571        // First: make sure the line is visible on screen:
6572
6573        int line = mLayout.getLineForOffset(start);
6574
6575        final int top = mLayout.getLineTop(line);
6576        final int bottom = mLayout.getLineTop(line + 1);
6577        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6578        int vslack = (bottom - top) / 2;
6579        if (vslack > vspace / 4)
6580            vslack = vspace / 4;
6581        final int vs = mScrollY;
6582
6583        if (top < (vs+vslack)) {
6584            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
6585        } else if (bottom > (vspace+vs-vslack)) {
6586            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
6587        }
6588
6589        // Next: make sure the character is visible on screen:
6590
6591        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6592        final int hs = mScrollX;
6593        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
6594        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
6595
6596        // line might contain bidirectional text
6597        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
6598        final int highChar = leftChar > rightChar ? leftChar : rightChar;
6599
6600        int newStart = start;
6601        if (newStart < lowChar) {
6602            newStart = lowChar;
6603        } else if (newStart > highChar) {
6604            newStart = highChar;
6605        }
6606
6607        if (newStart != start) {
6608            Selection.setSelection((Spannable)mText, newStart);
6609            return true;
6610        }
6611
6612        return false;
6613    }
6614
6615    @Override
6616    public void computeScroll() {
6617        if (mScroller != null) {
6618            if (mScroller.computeScrollOffset()) {
6619                mScrollX = mScroller.getCurrX();
6620                mScrollY = mScroller.getCurrY();
6621                invalidateParentCaches();
6622                postInvalidate();  // So we draw again
6623            }
6624        }
6625    }
6626
6627    private void getInterestingRect(Rect r, int line) {
6628        convertFromViewportToContentCoordinates(r);
6629
6630        // Rectangle can can be expanded on first and last line to take
6631        // padding into account.
6632        // TODO Take left/right padding into account too?
6633        if (line == 0) r.top -= getExtendedPaddingTop();
6634        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
6635    }
6636
6637    private void convertFromViewportToContentCoordinates(Rect r) {
6638        final int horizontalOffset = viewportToContentHorizontalOffset();
6639        r.left += horizontalOffset;
6640        r.right += horizontalOffset;
6641
6642        final int verticalOffset = viewportToContentVerticalOffset();
6643        r.top += verticalOffset;
6644        r.bottom += verticalOffset;
6645    }
6646
6647    int viewportToContentHorizontalOffset() {
6648        return getCompoundPaddingLeft() - mScrollX;
6649    }
6650
6651    int viewportToContentVerticalOffset() {
6652        int offset = getExtendedPaddingTop() - mScrollY;
6653        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
6654            offset += getVerticalOffset(false);
6655        }
6656        return offset;
6657    }
6658
6659    @Override
6660    public void debug(int depth) {
6661        super.debug(depth);
6662
6663        String output = debugIndent(depth);
6664        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
6665                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
6666                + "} ";
6667
6668        if (mText != null) {
6669
6670            output += "mText=\"" + mText + "\" ";
6671            if (mLayout != null) {
6672                output += "mLayout width=" + mLayout.getWidth()
6673                        + " height=" + mLayout.getHeight();
6674            }
6675        } else {
6676            output += "mText=NULL";
6677        }
6678        Log.d(VIEW_LOG_TAG, output);
6679    }
6680
6681    /**
6682     * Convenience for {@link Selection#getSelectionStart}.
6683     */
6684    @ViewDebug.ExportedProperty(category = "text")
6685    public int getSelectionStart() {
6686        return Selection.getSelectionStart(getText());
6687    }
6688
6689    /**
6690     * Convenience for {@link Selection#getSelectionEnd}.
6691     */
6692    @ViewDebug.ExportedProperty(category = "text")
6693    public int getSelectionEnd() {
6694        return Selection.getSelectionEnd(getText());
6695    }
6696
6697    /**
6698     * Return true iff there is a selection inside this text view.
6699     */
6700    public boolean hasSelection() {
6701        final int selectionStart = getSelectionStart();
6702        final int selectionEnd = getSelectionEnd();
6703
6704        return selectionStart >= 0 && selectionStart != selectionEnd;
6705    }
6706
6707    /**
6708     * Sets the properties of this field (lines, horizontally scrolling,
6709     * transformation method) to be for a single-line input.
6710     *
6711     * @attr ref android.R.styleable#TextView_singleLine
6712     */
6713    public void setSingleLine() {
6714        setSingleLine(true);
6715    }
6716
6717    /**
6718     * Sets the properties of this field to transform input to ALL CAPS
6719     * display. This may use a "small caps" formatting if available.
6720     * This setting will be ignored if this field is editable or selectable.
6721     *
6722     * This call replaces the current transformation method. Disabling this
6723     * will not necessarily restore the previous behavior from before this
6724     * was enabled.
6725     *
6726     * @see #setTransformationMethod(TransformationMethod)
6727     * @attr ref android.R.styleable#TextView_textAllCaps
6728     */
6729    public void setAllCaps(boolean allCaps) {
6730        if (allCaps) {
6731            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
6732        } else {
6733            setTransformationMethod(null);
6734        }
6735    }
6736
6737    /**
6738     * If true, sets the properties of this field (number of lines, horizontally scrolling,
6739     * transformation method) to be for a single-line input; if false, restores these to the default
6740     * conditions.
6741     *
6742     * Note that the default conditions are not necessarily those that were in effect prior this
6743     * method, and you may want to reset these properties to your custom values.
6744     *
6745     * @attr ref android.R.styleable#TextView_singleLine
6746     */
6747    @android.view.RemotableViewMethod
6748    public void setSingleLine(boolean singleLine) {
6749        // Could be used, but may break backward compatibility.
6750        // if (mSingleLine == singleLine) return;
6751        setInputTypeSingleLine(singleLine);
6752        applySingleLine(singleLine, true, true);
6753    }
6754
6755    /**
6756     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
6757     * @param singleLine
6758     */
6759    private void setInputTypeSingleLine(boolean singleLine) {
6760        if (mEditor != null &&
6761                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6762            if (singleLine) {
6763                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6764            } else {
6765                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
6766            }
6767        }
6768    }
6769
6770    private void applySingleLine(boolean singleLine, boolean applyTransformation,
6771            boolean changeMaxLines) {
6772        mSingleLine = singleLine;
6773        if (singleLine) {
6774            setLines(1);
6775            setHorizontallyScrolling(true);
6776            if (applyTransformation) {
6777                setTransformationMethod(SingleLineTransformationMethod.getInstance());
6778            }
6779        } else {
6780            if (changeMaxLines) {
6781                setMaxLines(Integer.MAX_VALUE);
6782            }
6783            setHorizontallyScrolling(false);
6784            if (applyTransformation) {
6785                setTransformationMethod(null);
6786            }
6787        }
6788    }
6789
6790    /**
6791     * Causes words in the text that are longer than the view is wide
6792     * to be ellipsized instead of broken in the middle.  You may also
6793     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
6794     * to constrain the text to a single line.  Use <code>null</code>
6795     * to turn off ellipsizing.
6796     *
6797     * If {@link #setMaxLines} has been used to set two or more lines,
6798     * {@link android.text.TextUtils.TruncateAt#END} and
6799     * {@link android.text.TextUtils.TruncateAt#MARQUEE}* are only supported
6800     * (other ellipsizing types will not do anything).
6801     *
6802     * @attr ref android.R.styleable#TextView_ellipsize
6803     */
6804    public void setEllipsize(TextUtils.TruncateAt where) {
6805        // TruncateAt is an enum. != comparison is ok between these singleton objects.
6806        if (mEllipsize != where) {
6807            mEllipsize = where;
6808
6809            if (mLayout != null) {
6810                nullLayouts();
6811                requestLayout();
6812                invalidate();
6813            }
6814        }
6815    }
6816
6817    /**
6818     * Sets how many times to repeat the marquee animation. Only applied if the
6819     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
6820     *
6821     * @see #getMarqueeRepeatLimit()
6822     *
6823     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
6824     */
6825    public void setMarqueeRepeatLimit(int marqueeLimit) {
6826        mMarqueeRepeatLimit = marqueeLimit;
6827    }
6828
6829    /**
6830     * Gets the number of times the marquee animation is repeated. Only meaningful if the
6831     * TextView has marquee enabled.
6832     *
6833     * @return the number of times the marquee animation is repeated. -1 if the animation
6834     * repeats indefinitely
6835     *
6836     * @see #setMarqueeRepeatLimit(int)
6837     *
6838     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
6839     */
6840    public int getMarqueeRepeatLimit() {
6841        return mMarqueeRepeatLimit;
6842    }
6843
6844    /**
6845     * Returns where, if anywhere, words that are longer than the view
6846     * is wide should be ellipsized.
6847     */
6848    @ViewDebug.ExportedProperty
6849    public TextUtils.TruncateAt getEllipsize() {
6850        return mEllipsize;
6851    }
6852
6853    /**
6854     * Set the TextView so that when it takes focus, all the text is
6855     * selected.
6856     *
6857     * @attr ref android.R.styleable#TextView_selectAllOnFocus
6858     */
6859    @android.view.RemotableViewMethod
6860    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
6861        createEditorIfNeeded();
6862        mEditor.mSelectAllOnFocus = selectAllOnFocus;
6863
6864        if (selectAllOnFocus && !(mText instanceof Spannable)) {
6865            setText(mText, BufferType.SPANNABLE);
6866        }
6867    }
6868
6869    /**
6870     * Set whether the cursor is visible. The default is true. Note that this property only
6871     * makes sense for editable TextView.
6872     *
6873     * @see #isCursorVisible()
6874     *
6875     * @attr ref android.R.styleable#TextView_cursorVisible
6876     */
6877    @android.view.RemotableViewMethod
6878    public void setCursorVisible(boolean visible) {
6879        if (visible && mEditor == null) return; // visible is the default value with no edit data
6880        createEditorIfNeeded();
6881        if (mEditor.mCursorVisible != visible) {
6882            mEditor.mCursorVisible = visible;
6883            invalidate();
6884
6885            mEditor.makeBlink();
6886
6887            // InsertionPointCursorController depends on mCursorVisible
6888            mEditor.prepareCursorControllers();
6889        }
6890    }
6891
6892    /**
6893     * @return whether or not the cursor is visible (assuming this TextView is editable)
6894     *
6895     * @see #setCursorVisible(boolean)
6896     *
6897     * @attr ref android.R.styleable#TextView_cursorVisible
6898     */
6899    public boolean isCursorVisible() {
6900        // true is the default value
6901        return mEditor == null ? true : mEditor.mCursorVisible;
6902    }
6903
6904    private boolean canMarquee() {
6905        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
6906        return width > 0 && (mLayout.getLineWidth(0) > width ||
6907                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
6908                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
6909    }
6910
6911    private void startMarquee() {
6912        // Do not ellipsize EditText
6913        if (getKeyListener() != null) return;
6914
6915        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
6916            return;
6917        }
6918
6919        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
6920                getLineCount() == 1 && canMarquee()) {
6921
6922            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6923                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
6924                final Layout tmp = mLayout;
6925                mLayout = mSavedMarqueeModeLayout;
6926                mSavedMarqueeModeLayout = tmp;
6927                setHorizontalFadingEdgeEnabled(true);
6928                requestLayout();
6929                invalidate();
6930            }
6931
6932            if (mMarquee == null) mMarquee = new Marquee(this);
6933            mMarquee.start(mMarqueeRepeatLimit);
6934        }
6935    }
6936
6937    private void stopMarquee() {
6938        if (mMarquee != null && !mMarquee.isStopped()) {
6939            mMarquee.stop();
6940        }
6941
6942        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
6943            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
6944            final Layout tmp = mSavedMarqueeModeLayout;
6945            mSavedMarqueeModeLayout = mLayout;
6946            mLayout = tmp;
6947            setHorizontalFadingEdgeEnabled(false);
6948            requestLayout();
6949            invalidate();
6950        }
6951    }
6952
6953    private void startStopMarquee(boolean start) {
6954        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6955            if (start) {
6956                startMarquee();
6957            } else {
6958                stopMarquee();
6959            }
6960        }
6961    }
6962
6963    /**
6964     * This method is called when the text is changed, in case any subclasses
6965     * would like to know.
6966     *
6967     * Within <code>text</code>, the <code>lengthAfter</code> characters
6968     * beginning at <code>start</code> have just replaced old text that had
6969     * length <code>lengthBefore</code>. It is an error to attempt to make
6970     * changes to <code>text</code> from this callback.
6971     *
6972     * @param text The text the TextView is displaying
6973     * @param start The offset of the start of the range of the text that was
6974     * modified
6975     * @param lengthBefore The length of the former text that has been replaced
6976     * @param lengthAfter The length of the replacement modified text
6977     */
6978    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
6979        // intentionally empty, template pattern method can be overridden by subclasses
6980    }
6981
6982    /**
6983     * This method is called when the selection has changed, in case any
6984     * subclasses would like to know.
6985     *
6986     * @param selStart The new selection start location.
6987     * @param selEnd The new selection end location.
6988     */
6989    protected void onSelectionChanged(int selStart, int selEnd) {
6990        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
6991    }
6992
6993    /**
6994     * Adds a TextWatcher to the list of those whose methods are called
6995     * whenever this TextView's text changes.
6996     * <p>
6997     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
6998     * not called after {@link #setText} calls.  Now, doing {@link #setText}
6999     * if there are any text changed listeners forces the buffer type to
7000     * Editable if it would not otherwise be and does call this method.
7001     */
7002    public void addTextChangedListener(TextWatcher watcher) {
7003        if (mListeners == null) {
7004            mListeners = new ArrayList<TextWatcher>();
7005        }
7006
7007        mListeners.add(watcher);
7008    }
7009
7010    /**
7011     * Removes the specified TextWatcher from the list of those whose
7012     * methods are called
7013     * whenever this TextView's text changes.
7014     */
7015    public void removeTextChangedListener(TextWatcher watcher) {
7016        if (mListeners != null) {
7017            int i = mListeners.indexOf(watcher);
7018
7019            if (i >= 0) {
7020                mListeners.remove(i);
7021            }
7022        }
7023    }
7024
7025    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
7026        if (mListeners != null) {
7027            final ArrayList<TextWatcher> list = mListeners;
7028            final int count = list.size();
7029            for (int i = 0; i < count; i++) {
7030                list.get(i).beforeTextChanged(text, start, before, after);
7031            }
7032        }
7033
7034        // The spans that are inside or intersect the modified region no longer make sense
7035        removeIntersectingSpans(start, start + before, SpellCheckSpan.class);
7036        removeIntersectingSpans(start, start + before, SuggestionSpan.class);
7037    }
7038
7039    // Removes all spans that are inside or actually overlap the start..end range
7040    private <T> void removeIntersectingSpans(int start, int end, Class<T> type) {
7041        if (!(mText instanceof Editable)) return;
7042        Editable text = (Editable) mText;
7043
7044        T[] spans = text.getSpans(start, end, type);
7045        final int length = spans.length;
7046        for (int i = 0; i < length; i++) {
7047            final int s = text.getSpanStart(spans[i]);
7048            final int e = text.getSpanEnd(spans[i]);
7049            // Spans that are adjacent to the edited region will be handled in
7050            // updateSpellCheckSpans. Result depends on what will be added (space or text)
7051            if (e == start || s == end) break;
7052            text.removeSpan(spans[i]);
7053        }
7054    }
7055
7056    /**
7057     * Not private so it can be called from an inner class without going
7058     * through a thunk.
7059     */
7060    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
7061        if (mListeners != null) {
7062            final ArrayList<TextWatcher> list = mListeners;
7063            final int count = list.size();
7064            for (int i = 0; i < count; i++) {
7065                list.get(i).onTextChanged(text, start, before, after);
7066            }
7067        }
7068
7069        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
7070    }
7071
7072    /**
7073     * Not private so it can be called from an inner class without going
7074     * through a thunk.
7075     */
7076    void sendAfterTextChanged(Editable text) {
7077        if (mListeners != null) {
7078            final ArrayList<TextWatcher> list = mListeners;
7079            final int count = list.size();
7080            for (int i = 0; i < count; i++) {
7081                list.get(i).afterTextChanged(text);
7082            }
7083        }
7084    }
7085
7086    void updateAfterEdit() {
7087        invalidate();
7088        int curs = getSelectionStart();
7089
7090        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7091            registerForPreDraw();
7092        }
7093
7094        if (curs >= 0) {
7095            mHighlightPathBogus = true;
7096            if (mEditor != null) mEditor.makeBlink();
7097            bringPointIntoView(curs);
7098        }
7099
7100        checkForResize();
7101    }
7102
7103    /**
7104     * Not private so it can be called from an inner class without going
7105     * through a thunk.
7106     */
7107    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
7108        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7109        if (ims == null || ims.mBatchEditNesting == 0) {
7110            updateAfterEdit();
7111        }
7112        if (ims != null) {
7113            ims.mContentChanged = true;
7114            if (ims.mChangedStart < 0) {
7115                ims.mChangedStart = start;
7116                ims.mChangedEnd = start+before;
7117            } else {
7118                ims.mChangedStart = Math.min(ims.mChangedStart, start);
7119                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
7120            }
7121            ims.mChangedDelta += after-before;
7122        }
7123
7124        sendOnTextChanged(buffer, start, before, after);
7125        onTextChanged(buffer, start, before, after);
7126    }
7127
7128    /**
7129     * Not private so it can be called from an inner class without going
7130     * through a thunk.
7131     */
7132    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
7133        // XXX Make the start and end move together if this ends up
7134        // spending too much time invalidating.
7135
7136        boolean selChanged = false;
7137        int newSelStart=-1, newSelEnd=-1;
7138
7139        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7140
7141        if (what == Selection.SELECTION_END) {
7142            selChanged = true;
7143            newSelEnd = newStart;
7144
7145            if (oldStart >= 0 || newStart >= 0) {
7146                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
7147                registerForPreDraw();
7148                if (mEditor != null) mEditor.makeBlink();
7149            }
7150        }
7151
7152        if (what == Selection.SELECTION_START) {
7153            selChanged = true;
7154            newSelStart = newStart;
7155
7156            if (oldStart >= 0 || newStart >= 0) {
7157                int end = Selection.getSelectionEnd(buf);
7158                invalidateCursor(end, oldStart, newStart);
7159            }
7160        }
7161
7162        if (selChanged) {
7163            mHighlightPathBogus = true;
7164            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
7165
7166            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
7167                if (newSelStart < 0) {
7168                    newSelStart = Selection.getSelectionStart(buf);
7169                }
7170                if (newSelEnd < 0) {
7171                    newSelEnd = Selection.getSelectionEnd(buf);
7172                }
7173                onSelectionChanged(newSelStart, newSelEnd);
7174            }
7175        }
7176
7177        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
7178                what instanceof CharacterStyle) {
7179            if (ims == null || ims.mBatchEditNesting == 0) {
7180                invalidate();
7181                mHighlightPathBogus = true;
7182                checkForResize();
7183            } else {
7184                ims.mContentChanged = true;
7185            }
7186            if (mEditor != null) {
7187                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
7188                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
7189            }
7190        }
7191
7192        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
7193            mHighlightPathBogus = true;
7194            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
7195                ims.mSelectionModeChanged = true;
7196            }
7197
7198            if (Selection.getSelectionStart(buf) >= 0) {
7199                if (ims == null || ims.mBatchEditNesting == 0) {
7200                    invalidateCursor();
7201                } else {
7202                    ims.mCursorChanged = true;
7203                }
7204            }
7205        }
7206
7207        if (what instanceof ParcelableSpan) {
7208            // If this is a span that can be sent to a remote process,
7209            // the current extract editor would be interested in it.
7210            if (ims != null && ims.mExtractedTextRequest != null) {
7211                if (ims.mBatchEditNesting != 0) {
7212                    if (oldStart >= 0) {
7213                        if (ims.mChangedStart > oldStart) {
7214                            ims.mChangedStart = oldStart;
7215                        }
7216                        if (ims.mChangedStart > oldEnd) {
7217                            ims.mChangedStart = oldEnd;
7218                        }
7219                    }
7220                    if (newStart >= 0) {
7221                        if (ims.mChangedStart > newStart) {
7222                            ims.mChangedStart = newStart;
7223                        }
7224                        if (ims.mChangedStart > newEnd) {
7225                            ims.mChangedStart = newEnd;
7226                        }
7227                    }
7228                } else {
7229                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
7230                            + oldStart + "-" + oldEnd + ","
7231                            + newStart + "-" + newEnd + " " + what);
7232                    ims.mContentChanged = true;
7233                }
7234            }
7235        }
7236
7237        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
7238                what instanceof SpellCheckSpan) {
7239            mEditor.mSpellChecker.removeSpellCheckSpan((SpellCheckSpan) what);
7240        }
7241    }
7242
7243    /**
7244     * @hide
7245     */
7246    @Override
7247    public void dispatchFinishTemporaryDetach() {
7248        mDispatchTemporaryDetach = true;
7249        super.dispatchFinishTemporaryDetach();
7250        mDispatchTemporaryDetach = false;
7251    }
7252
7253    @Override
7254    public void onStartTemporaryDetach() {
7255        super.onStartTemporaryDetach();
7256        // Only track when onStartTemporaryDetach() is called directly,
7257        // usually because this instance is an editable field in a list
7258        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
7259
7260        // Tell the editor that we are temporarily detached. It can use this to preserve
7261        // selection state as needed.
7262        if (mEditor != null) mEditor.mTemporaryDetach = true;
7263    }
7264
7265    @Override
7266    public void onFinishTemporaryDetach() {
7267        super.onFinishTemporaryDetach();
7268        // Only track when onStartTemporaryDetach() is called directly,
7269        // usually because this instance is an editable field in a list
7270        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
7271        if (mEditor != null) mEditor.mTemporaryDetach = false;
7272    }
7273
7274    @Override
7275    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
7276        if (mTemporaryDetach) {
7277            // If we are temporarily in the detach state, then do nothing.
7278            super.onFocusChanged(focused, direction, previouslyFocusedRect);
7279            return;
7280        }
7281
7282        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
7283
7284        if (focused) {
7285            if (mText instanceof Spannable) {
7286                Spannable sp = (Spannable) mText;
7287                MetaKeyKeyListener.resetMetaState(sp);
7288            }
7289        }
7290
7291        startStopMarquee(focused);
7292
7293        if (mTransformation != null) {
7294            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
7295        }
7296
7297        super.onFocusChanged(focused, direction, previouslyFocusedRect);
7298    }
7299
7300    @Override
7301    public void onWindowFocusChanged(boolean hasWindowFocus) {
7302        super.onWindowFocusChanged(hasWindowFocus);
7303
7304        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
7305
7306        startStopMarquee(hasWindowFocus);
7307    }
7308
7309    @Override
7310    protected void onVisibilityChanged(View changedView, int visibility) {
7311        super.onVisibilityChanged(changedView, visibility);
7312        if (mEditor != null && visibility != VISIBLE) {
7313            mEditor.hideControllers();
7314        }
7315    }
7316
7317    /**
7318     * Use {@link BaseInputConnection#removeComposingSpans
7319     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
7320     * state from this text view.
7321     */
7322    public void clearComposingText() {
7323        if (mText instanceof Spannable) {
7324            BaseInputConnection.removeComposingSpans((Spannable)mText);
7325        }
7326    }
7327
7328    @Override
7329    public void setSelected(boolean selected) {
7330        boolean wasSelected = isSelected();
7331
7332        super.setSelected(selected);
7333
7334        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7335            if (selected) {
7336                startMarquee();
7337            } else {
7338                stopMarquee();
7339            }
7340        }
7341    }
7342
7343    @Override
7344    public boolean onTouchEvent(MotionEvent event) {
7345        final int action = event.getActionMasked();
7346
7347        if (mEditor != null) mEditor.onTouchEvent(event);
7348
7349        final boolean superResult = super.onTouchEvent(event);
7350
7351        /*
7352         * Don't handle the release after a long press, because it will
7353         * move the selection away from whatever the menu action was
7354         * trying to affect.
7355         */
7356        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
7357            mEditor.mDiscardNextActionUp = false;
7358            return superResult;
7359        }
7360
7361        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
7362                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
7363
7364         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
7365                && mText instanceof Spannable && mLayout != null) {
7366            boolean handled = false;
7367
7368            if (mMovement != null) {
7369                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
7370            }
7371
7372            final boolean textIsSelectable = isTextSelectable();
7373            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
7374                // The LinkMovementMethod which should handle taps on links has not been installed
7375                // on non editable text that support text selection.
7376                // We reproduce its behavior here to open links for these.
7377                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
7378                        getSelectionEnd(), ClickableSpan.class);
7379
7380                if (links.length > 0) {
7381                    links[0].onClick(this);
7382                    handled = true;
7383                }
7384            }
7385
7386            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
7387                // Show the IME, except when selecting in read-only text.
7388                final InputMethodManager imm = InputMethodManager.peekInstance();
7389                viewClicked(imm);
7390                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
7391                    handled |= imm != null && imm.showSoftInput(this, 0);
7392                }
7393
7394                // The above condition ensures that the mEditor is not null
7395                mEditor.onTouchUpEvent(event);
7396
7397                handled = true;
7398            }
7399
7400            if (handled) {
7401                return true;
7402            }
7403        }
7404
7405        return superResult;
7406    }
7407
7408    @Override
7409    public boolean onGenericMotionEvent(MotionEvent event) {
7410        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7411            try {
7412                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
7413                    return true;
7414                }
7415            } catch (AbstractMethodError ex) {
7416                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
7417                // Ignore its absence in case third party applications implemented the
7418                // interface directly.
7419            }
7420        }
7421        return super.onGenericMotionEvent(event);
7422    }
7423
7424    /**
7425     * @return True iff this TextView contains a text that can be edited, or if this is
7426     * a selectable TextView.
7427     */
7428    boolean isTextEditable() {
7429        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
7430    }
7431
7432    /**
7433     * Returns true, only while processing a touch gesture, if the initial
7434     * touch down event caused focus to move to the text view and as a result
7435     * its selection changed.  Only valid while processing the touch gesture
7436     * of interest, in an editable text view.
7437     */
7438    public boolean didTouchFocusSelect() {
7439        return mEditor != null && mEditor.mTouchFocusSelected;
7440    }
7441
7442    @Override
7443    public void cancelLongPress() {
7444        super.cancelLongPress();
7445        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
7446    }
7447
7448    @Override
7449    public boolean onTrackballEvent(MotionEvent event) {
7450        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
7451            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
7452                return true;
7453            }
7454        }
7455
7456        return super.onTrackballEvent(event);
7457    }
7458
7459    public void setScroller(Scroller s) {
7460        mScroller = s;
7461    }
7462
7463    @Override
7464    protected float getLeftFadingEdgeStrength() {
7465        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7466                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7467            if (mMarquee != null && !mMarquee.isStopped()) {
7468                final Marquee marquee = mMarquee;
7469                if (marquee.shouldDrawLeftFade()) {
7470                    return marquee.mScroll / getHorizontalFadingEdgeLength();
7471                } else {
7472                    return 0.0f;
7473                }
7474            } else if (getLineCount() == 1) {
7475                final int layoutDirection = getResolvedLayoutDirection();
7476                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7477                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7478                    case Gravity.LEFT:
7479                        return 0.0f;
7480                    case Gravity.RIGHT:
7481                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
7482                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
7483                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
7484                    case Gravity.CENTER_HORIZONTAL:
7485                        return 0.0f;
7486                }
7487            }
7488        }
7489        return super.getLeftFadingEdgeStrength();
7490    }
7491
7492    @Override
7493    protected float getRightFadingEdgeStrength() {
7494        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
7495                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7496            if (mMarquee != null && !mMarquee.isStopped()) {
7497                final Marquee marquee = mMarquee;
7498                return (marquee.mMaxFadeScroll - marquee.mScroll) / getHorizontalFadingEdgeLength();
7499            } else if (getLineCount() == 1) {
7500                final int layoutDirection = getResolvedLayoutDirection();
7501                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
7502                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
7503                    case Gravity.LEFT:
7504                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
7505                                getCompoundPaddingRight();
7506                        final float lineWidth = mLayout.getLineWidth(0);
7507                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
7508                    case Gravity.RIGHT:
7509                        return 0.0f;
7510                    case Gravity.CENTER_HORIZONTAL:
7511                    case Gravity.FILL_HORIZONTAL:
7512                        return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
7513                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
7514                                getHorizontalFadingEdgeLength();
7515                }
7516            }
7517        }
7518        return super.getRightFadingEdgeStrength();
7519    }
7520
7521    @Override
7522    protected int computeHorizontalScrollRange() {
7523        if (mLayout != null) {
7524            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
7525                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
7526        }
7527
7528        return super.computeHorizontalScrollRange();
7529    }
7530
7531    @Override
7532    protected int computeVerticalScrollRange() {
7533        if (mLayout != null)
7534            return mLayout.getHeight();
7535
7536        return super.computeVerticalScrollRange();
7537    }
7538
7539    @Override
7540    protected int computeVerticalScrollExtent() {
7541        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
7542    }
7543
7544    @Override
7545    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
7546        super.findViewsWithText(outViews, searched, flags);
7547        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
7548                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
7549            String searchedLowerCase = searched.toString().toLowerCase();
7550            String textLowerCase = mText.toString().toLowerCase();
7551            if (textLowerCase.contains(searchedLowerCase)) {
7552                outViews.add(this);
7553            }
7554        }
7555    }
7556
7557    public enum BufferType {
7558        NORMAL, SPANNABLE, EDITABLE,
7559    }
7560
7561    /**
7562     * Returns the TextView_textColor attribute from the
7563     * Resources.StyledAttributes, if set, or the TextAppearance_textColor
7564     * from the TextView_textAppearance attribute, if TextView_textColor
7565     * was not set directly.
7566     */
7567    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
7568        ColorStateList colors;
7569        colors = attrs.getColorStateList(com.android.internal.R.styleable.
7570                                         TextView_textColor);
7571
7572        if (colors == null) {
7573            int ap = attrs.getResourceId(com.android.internal.R.styleable.
7574                                         TextView_textAppearance, -1);
7575            if (ap != -1) {
7576                TypedArray appearance;
7577                appearance = context.obtainStyledAttributes(ap,
7578                                            com.android.internal.R.styleable.TextAppearance);
7579                colors = appearance.getColorStateList(com.android.internal.R.styleable.
7580                                                  TextAppearance_textColor);
7581                appearance.recycle();
7582            }
7583        }
7584
7585        return colors;
7586    }
7587
7588    /**
7589     * Returns the default color from the TextView_textColor attribute
7590     * from the AttributeSet, if set, or the default color from the
7591     * TextAppearance_textColor from the TextView_textAppearance attribute,
7592     * if TextView_textColor was not set directly.
7593     */
7594    public static int getTextColor(Context context,
7595                                   TypedArray attrs,
7596                                   int def) {
7597        ColorStateList colors = getTextColors(context, attrs);
7598
7599        if (colors == null) {
7600            return def;
7601        } else {
7602            return colors.getDefaultColor();
7603        }
7604    }
7605
7606    @Override
7607    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
7608        final int filteredMetaState = event.getMetaState() & ~KeyEvent.META_CTRL_MASK;
7609        if (KeyEvent.metaStateHasNoModifiers(filteredMetaState)) {
7610            switch (keyCode) {
7611            case KeyEvent.KEYCODE_A:
7612                if (canSelectText()) {
7613                    return onTextContextMenuItem(ID_SELECT_ALL);
7614                }
7615                break;
7616            case KeyEvent.KEYCODE_X:
7617                if (canCut()) {
7618                    return onTextContextMenuItem(ID_CUT);
7619                }
7620                break;
7621            case KeyEvent.KEYCODE_C:
7622                if (canCopy()) {
7623                    return onTextContextMenuItem(ID_COPY);
7624                }
7625                break;
7626            case KeyEvent.KEYCODE_V:
7627                if (canPaste()) {
7628                    return onTextContextMenuItem(ID_PASTE);
7629                }
7630                break;
7631            }
7632        }
7633        return super.onKeyShortcut(keyCode, event);
7634    }
7635
7636    /**
7637     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
7638     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
7639     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
7640     * sufficient.
7641     */
7642    private boolean canSelectText() {
7643        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
7644    }
7645
7646    /**
7647     * Test based on the <i>intrinsic</i> charateristics of the TextView.
7648     * The text must be spannable and the movement method must allow for arbitary selection.
7649     *
7650     * See also {@link #canSelectText()}.
7651     */
7652    boolean textCanBeSelected() {
7653        // prepareCursorController() relies on this method.
7654        // If you change this condition, make sure prepareCursorController is called anywhere
7655        // the value of this condition might be changed.
7656        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
7657        return isTextEditable() ||
7658                (isTextSelectable() && mText instanceof Spannable && isEnabled());
7659    }
7660
7661    /**
7662     * This is a temporary method. Future versions may support multi-locale text.
7663     *
7664     * @return The locale that should be used for a word iterator and a spell checker
7665     * in this TextView, based on the current spell checker settings,
7666     * the current IME's locale, or the system default locale.
7667     * @hide
7668     */
7669    public Locale getTextServicesLocale() {
7670        Locale locale = Locale.getDefault();
7671        final TextServicesManager textServicesManager = (TextServicesManager)
7672                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
7673        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
7674        if (subtype != null) {
7675            locale = new Locale(subtype.getLocale());
7676        }
7677        return locale;
7678    }
7679
7680    void onLocaleChanged() {
7681        // Will be re-created on demand in getWordIterator with the proper new locale
7682        mEditor.mWordIterator = null;
7683    }
7684
7685    /**
7686     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
7687     * Made available to achieve a consistent behavior.
7688     * @hide
7689     */
7690    public WordIterator getWordIterator() {
7691        if (mEditor != null) {
7692            return mEditor.getWordIterator();
7693        } else {
7694            return null;
7695        }
7696    }
7697
7698    @Override
7699    public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
7700        super.onPopulateAccessibilityEvent(event);
7701
7702        final boolean isPassword = hasPasswordTransformationMethod();
7703        if (!isPassword) {
7704            CharSequence text = getTextForAccessibility();
7705            if (!TextUtils.isEmpty(text)) {
7706                event.getText().add(text);
7707            }
7708        }
7709    }
7710
7711    @Override
7712    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
7713        super.onInitializeAccessibilityEvent(event);
7714
7715        event.setClassName(TextView.class.getName());
7716        final boolean isPassword = hasPasswordTransformationMethod();
7717        event.setPassword(isPassword);
7718
7719        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
7720            event.setFromIndex(Selection.getSelectionStart(mText));
7721            event.setToIndex(Selection.getSelectionEnd(mText));
7722            event.setItemCount(mText.length());
7723        }
7724    }
7725
7726    @Override
7727    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
7728        super.onInitializeAccessibilityNodeInfo(info);
7729
7730        info.setClassName(TextView.class.getName());
7731        final boolean isPassword = hasPasswordTransformationMethod();
7732        info.setPassword(isPassword);
7733
7734        if (!isPassword) {
7735            info.setText(getTextForAccessibility());
7736        }
7737
7738        if (TextUtils.isEmpty(getContentDescription())
7739                && !TextUtils.isEmpty(mText)) {
7740            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
7741            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
7742            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
7743                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
7744                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
7745                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
7746                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
7747        }
7748    }
7749
7750    @Override
7751    public void sendAccessibilityEvent(int eventType) {
7752        // Do not send scroll events since first they are not interesting for
7753        // accessibility and second such events a generated too frequently.
7754        // For details see the implementation of bringTextIntoView().
7755        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
7756            return;
7757        }
7758        super.sendAccessibilityEvent(eventType);
7759    }
7760
7761    /**
7762     * Gets the text reported for accessibility purposes.
7763     *
7764     * @return The accessibility text.
7765     *
7766     * @hide
7767     */
7768    public CharSequence getTextForAccessibility() {
7769        CharSequence text = getText();
7770        if (TextUtils.isEmpty(text)) {
7771            text = getHint();
7772        }
7773        return text;
7774    }
7775
7776    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
7777            int fromIndex, int removedCount, int addedCount) {
7778        AccessibilityEvent event =
7779            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
7780        event.setFromIndex(fromIndex);
7781        event.setRemovedCount(removedCount);
7782        event.setAddedCount(addedCount);
7783        event.setBeforeText(beforeText);
7784        sendAccessibilityEventUnchecked(event);
7785    }
7786
7787    /**
7788     * Returns whether this text view is a current input method target.  The
7789     * default implementation just checks with {@link InputMethodManager}.
7790     */
7791    public boolean isInputMethodTarget() {
7792        InputMethodManager imm = InputMethodManager.peekInstance();
7793        return imm != null && imm.isActive(this);
7794    }
7795
7796    static final int ID_SELECT_ALL = android.R.id.selectAll;
7797    static final int ID_CUT = android.R.id.cut;
7798    static final int ID_COPY = android.R.id.copy;
7799    static final int ID_PASTE = android.R.id.paste;
7800
7801    /**
7802     * Called when a context menu option for the text view is selected.  Currently
7803     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
7804     * {@link android.R.id#copy} or {@link android.R.id#paste}.
7805     *
7806     * @return true if the context menu item action was performed.
7807     */
7808    public boolean onTextContextMenuItem(int id) {
7809        int min = 0;
7810        int max = mText.length();
7811
7812        if (isFocused()) {
7813            final int selStart = getSelectionStart();
7814            final int selEnd = getSelectionEnd();
7815
7816            min = Math.max(0, Math.min(selStart, selEnd));
7817            max = Math.max(0, Math.max(selStart, selEnd));
7818        }
7819
7820        switch (id) {
7821            case ID_SELECT_ALL:
7822                // This does not enter text selection mode. Text is highlighted, so that it can be
7823                // bulk edited, like selectAllOnFocus does. Returns true even if text is empty.
7824                selectAllText();
7825                return true;
7826
7827            case ID_PASTE:
7828                paste(min, max);
7829                return true;
7830
7831            case ID_CUT:
7832                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
7833                deleteText_internal(min, max);
7834                stopSelectionActionMode();
7835                return true;
7836
7837            case ID_COPY:
7838                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
7839                stopSelectionActionMode();
7840                return true;
7841        }
7842        return false;
7843    }
7844
7845    CharSequence getTransformedText(int start, int end) {
7846        return removeSuggestionSpans(mTransformed.subSequence(start, end));
7847    }
7848
7849    @Override
7850    public boolean performLongClick() {
7851        boolean handled = false;
7852
7853        if (super.performLongClick()) {
7854            handled = true;
7855        }
7856
7857        if (mEditor != null) {
7858            handled |= mEditor.performLongClick(handled);
7859        }
7860
7861        if (handled) {
7862            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
7863            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
7864        }
7865
7866        return handled;
7867    }
7868
7869    @Override
7870    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
7871        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
7872        if (mEditor != null) {
7873            mEditor.onScrollChanged();
7874        }
7875    }
7876
7877    /**
7878     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
7879     * by the IME or by the spell checker as the user types. This is done by adding
7880     * {@link SuggestionSpan}s to the text.
7881     *
7882     * When suggestions are enabled (default), this list of suggestions will be displayed when the
7883     * user asks for them on these parts of the text. This value depends on the inputType of this
7884     * TextView.
7885     *
7886     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
7887     *
7888     * In addition, the type variation must be one of
7889     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
7890     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
7891     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
7892     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
7893     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
7894     *
7895     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
7896     *
7897     * @return true if the suggestions popup window is enabled, based on the inputType.
7898     */
7899    public boolean isSuggestionsEnabled() {
7900        if (mEditor == null) return false;
7901        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
7902            return false;
7903        }
7904        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
7905
7906        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
7907        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
7908                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
7909                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
7910                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
7911                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
7912    }
7913
7914    /**
7915     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
7916     * selection is initiated in this View.
7917     *
7918     * The standard implementation populates the menu with a subset of Select All, Cut, Copy and
7919     * Paste actions, depending on what this View supports.
7920     *
7921     * A custom implementation can add new entries in the default menu in its
7922     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The
7923     * default actions can also be removed from the menu using {@link Menu#removeItem(int)} and
7924     * passing {@link android.R.id#selectAll}, {@link android.R.id#cut}, {@link android.R.id#copy}
7925     * or {@link android.R.id#paste} ids as parameters.
7926     *
7927     * Returning false from
7928     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will prevent
7929     * the action mode from being started.
7930     *
7931     * Action click events should be handled by the custom implementation of
7932     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
7933     *
7934     * Note that text selection mode is not started when a TextView receives focus and the
7935     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
7936     * that case, to allow for quick replacement.
7937     */
7938    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
7939        createEditorIfNeeded();
7940        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
7941    }
7942
7943    /**
7944     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
7945     *
7946     * @return The current custom selection callback.
7947     */
7948    public ActionMode.Callback getCustomSelectionActionModeCallback() {
7949        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
7950    }
7951
7952    /**
7953     * @hide
7954     */
7955    protected void stopSelectionActionMode() {
7956        mEditor.stopSelectionActionMode();
7957    }
7958
7959    boolean canCut() {
7960        if (hasPasswordTransformationMethod()) {
7961            return false;
7962        }
7963
7964        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
7965                mEditor.mKeyListener != null) {
7966            return true;
7967        }
7968
7969        return false;
7970    }
7971
7972    boolean canCopy() {
7973        if (hasPasswordTransformationMethod()) {
7974            return false;
7975        }
7976
7977        if (mText.length() > 0 && hasSelection()) {
7978            return true;
7979        }
7980
7981        return false;
7982    }
7983
7984    boolean canPaste() {
7985        return (mText instanceof Editable &&
7986                mEditor != null && mEditor.mKeyListener != null &&
7987                getSelectionStart() >= 0 &&
7988                getSelectionEnd() >= 0 &&
7989                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
7990                hasPrimaryClip());
7991    }
7992
7993    boolean selectAllText() {
7994        final int length = mText.length();
7995        Selection.setSelection((Spannable) mText, 0, length);
7996        return length > 0;
7997    }
7998
7999    /**
8000     * Prepare text so that there are not zero or two spaces at beginning and end of region defined
8001     * by [min, max] when replacing this region by paste.
8002     * Note that if there were two spaces (or more) at that position before, they are kept. We just
8003     * make sure we do not add an extra one from the paste content.
8004     */
8005    long prepareSpacesAroundPaste(int min, int max, CharSequence paste) {
8006        if (paste.length() > 0) {
8007            if (min > 0) {
8008                final char charBefore = mTransformed.charAt(min - 1);
8009                final char charAfter = paste.charAt(0);
8010
8011                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8012                    // Two spaces at beginning of paste: remove one
8013                    final int originalLength = mText.length();
8014                    deleteText_internal(min - 1, min);
8015                    // Due to filters, there is no guarantee that exactly one character was
8016                    // removed: count instead.
8017                    final int delta = mText.length() - originalLength;
8018                    min += delta;
8019                    max += delta;
8020                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8021                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8022                    // No space at beginning of paste: add one
8023                    final int originalLength = mText.length();
8024                    replaceText_internal(min, min, " ");
8025                    // Taking possible filters into account as above.
8026                    final int delta = mText.length() - originalLength;
8027                    min += delta;
8028                    max += delta;
8029                }
8030            }
8031
8032            if (max < mText.length()) {
8033                final char charBefore = paste.charAt(paste.length() - 1);
8034                final char charAfter = mTransformed.charAt(max);
8035
8036                if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) {
8037                    // Two spaces at end of paste: remove one
8038                    deleteText_internal(max, max + 1);
8039                } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' &&
8040                        !Character.isSpaceChar(charAfter) && charAfter != '\n') {
8041                    // No space at end of paste: add one
8042                    replaceText_internal(max, max, " ");
8043                }
8044            }
8045        }
8046
8047        return TextUtils.packRangeInLong(min, max);
8048    }
8049
8050    /**
8051     * Paste clipboard content between min and max positions.
8052     */
8053    private void paste(int min, int max) {
8054        ClipboardManager clipboard =
8055            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
8056        ClipData clip = clipboard.getPrimaryClip();
8057        if (clip != null) {
8058            boolean didFirst = false;
8059            for (int i=0; i<clip.getItemCount(); i++) {
8060                CharSequence paste = clip.getItemAt(i).coerceToStyledText(getContext());
8061                if (paste != null) {
8062                    if (!didFirst) {
8063                        long minMax = prepareSpacesAroundPaste(min, max, paste);
8064                        min = TextUtils.unpackRangeStartFromLong(minMax);
8065                        max = TextUtils.unpackRangeEndFromLong(minMax);
8066                        Selection.setSelection((Spannable) mText, max);
8067                        ((Editable) mText).replace(min, max, paste);
8068                        didFirst = true;
8069                    } else {
8070                        ((Editable) mText).insert(getSelectionEnd(), "\n");
8071                        ((Editable) mText).insert(getSelectionEnd(), paste);
8072                    }
8073                }
8074            }
8075            stopSelectionActionMode();
8076            LAST_CUT_OR_COPY_TIME = 0;
8077        }
8078    }
8079
8080    private void setPrimaryClip(ClipData clip) {
8081        ClipboardManager clipboard = (ClipboardManager) getContext().
8082                getSystemService(Context.CLIPBOARD_SERVICE);
8083        clipboard.setPrimaryClip(clip);
8084        LAST_CUT_OR_COPY_TIME = SystemClock.uptimeMillis();
8085    }
8086
8087    /**
8088     * Get the character offset closest to the specified absolute position. A typical use case is to
8089     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
8090     *
8091     * @param x The horizontal absolute position of a point on screen
8092     * @param y The vertical absolute position of a point on screen
8093     * @return the character offset for the character whose position is closest to the specified
8094     *  position. Returns -1 if there is no layout.
8095     */
8096    public int getOffsetForPosition(float x, float y) {
8097        if (getLayout() == null) return -1;
8098        final int line = getLineAtCoordinate(y);
8099        final int offset = getOffsetAtCoordinate(line, x);
8100        return offset;
8101    }
8102
8103    float convertToLocalHorizontalCoordinate(float x) {
8104        x -= getTotalPaddingLeft();
8105        // Clamp the position to inside of the view.
8106        x = Math.max(0.0f, x);
8107        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
8108        x += getScrollX();
8109        return x;
8110    }
8111
8112    int getLineAtCoordinate(float y) {
8113        y -= getTotalPaddingTop();
8114        // Clamp the position to inside of the view.
8115        y = Math.max(0.0f, y);
8116        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
8117        y += getScrollY();
8118        return getLayout().getLineForVertical((int) y);
8119    }
8120
8121    private int getOffsetAtCoordinate(int line, float x) {
8122        x = convertToLocalHorizontalCoordinate(x);
8123        return getLayout().getOffsetForHorizontal(line, x);
8124    }
8125
8126    @Override
8127    public boolean onDragEvent(DragEvent event) {
8128        switch (event.getAction()) {
8129            case DragEvent.ACTION_DRAG_STARTED:
8130                return mEditor != null && mEditor.hasInsertionController();
8131
8132            case DragEvent.ACTION_DRAG_ENTERED:
8133                TextView.this.requestFocus();
8134                return true;
8135
8136            case DragEvent.ACTION_DRAG_LOCATION:
8137                final int offset = getOffsetForPosition(event.getX(), event.getY());
8138                Selection.setSelection((Spannable)mText, offset);
8139                return true;
8140
8141            case DragEvent.ACTION_DROP:
8142                if (mEditor != null) mEditor.onDrop(event);
8143                return true;
8144
8145            case DragEvent.ACTION_DRAG_ENDED:
8146            case DragEvent.ACTION_DRAG_EXITED:
8147            default:
8148                return true;
8149        }
8150    }
8151
8152    boolean isInBatchEditMode() {
8153        if (mEditor == null) return false;
8154        final Editor.InputMethodState ims = mEditor.mInputMethodState;
8155        if (ims != null) {
8156            return ims.mBatchEditNesting > 0;
8157        }
8158        return mEditor.mInBatchEditControllers;
8159    }
8160
8161    @Override
8162    public void onResolvedTextDirectionChanged() {
8163        if (hasPasswordTransformationMethod()) {
8164            // TODO: take care of the content direction to show the password text and dots justified
8165            // to the left or to the right
8166            mTextDir = TextDirectionHeuristics.LOCALE;
8167            return;
8168        }
8169
8170        // Always need to resolve layout direction first
8171        final boolean defaultIsRtl = (getResolvedLayoutDirection() == LAYOUT_DIRECTION_RTL);
8172
8173        // Now, we can select the heuristic
8174        int textDir = getResolvedTextDirection();
8175        switch (textDir) {
8176            default:
8177            case TEXT_DIRECTION_FIRST_STRONG:
8178                mTextDir = (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
8179                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
8180                break;
8181            case TEXT_DIRECTION_ANY_RTL:
8182                mTextDir = TextDirectionHeuristics.ANYRTL_LTR;
8183                break;
8184            case TEXT_DIRECTION_LTR:
8185                mTextDir = TextDirectionHeuristics.LTR;
8186                break;
8187            case TEXT_DIRECTION_RTL:
8188                mTextDir = TextDirectionHeuristics.RTL;
8189                break;
8190            case TEXT_DIRECTION_LOCALE:
8191                mTextDir = TextDirectionHeuristics.LOCALE;
8192                break;
8193        }
8194    }
8195
8196    /**
8197     * Subclasses will need to override this method to implement their own way of resolving
8198     * drawables depending on the layout direction.
8199     *
8200     * A call to the super method will be required from the subclasses implementation.
8201     */
8202    protected void resolveDrawables() {
8203        // No need to resolve twice
8204        if (mResolvedDrawables) {
8205            return;
8206        }
8207        // No drawable to resolve
8208        if (mDrawables == null) {
8209            return;
8210        }
8211        // No relative drawable to resolve
8212        if (mDrawables.mDrawableStart == null && mDrawables.mDrawableEnd == null) {
8213            mResolvedDrawables = true;
8214            return;
8215        }
8216
8217        Drawables dr = mDrawables;
8218        switch(getResolvedLayoutDirection()) {
8219            case LAYOUT_DIRECTION_RTL:
8220                if (dr.mDrawableStart != null) {
8221                    dr.mDrawableRight = dr.mDrawableStart;
8222
8223                    dr.mDrawableSizeRight = dr.mDrawableSizeStart;
8224                    dr.mDrawableHeightRight = dr.mDrawableHeightStart;
8225                }
8226                if (dr.mDrawableEnd != null) {
8227                    dr.mDrawableLeft = dr.mDrawableEnd;
8228
8229                    dr.mDrawableSizeLeft = dr.mDrawableSizeEnd;
8230                    dr.mDrawableHeightLeft = dr.mDrawableHeightEnd;
8231                }
8232                break;
8233
8234            case LAYOUT_DIRECTION_LTR:
8235            default:
8236                if (dr.mDrawableStart != null) {
8237                    dr.mDrawableLeft = dr.mDrawableStart;
8238
8239                    dr.mDrawableSizeLeft = dr.mDrawableSizeStart;
8240                    dr.mDrawableHeightLeft = dr.mDrawableHeightStart;
8241                }
8242                if (dr.mDrawableEnd != null) {
8243                    dr.mDrawableRight = dr.mDrawableEnd;
8244
8245                    dr.mDrawableSizeRight = dr.mDrawableSizeEnd;
8246                    dr.mDrawableHeightRight = dr.mDrawableHeightEnd;
8247                }
8248                break;
8249        }
8250        mResolvedDrawables = true;
8251    }
8252
8253    protected void resetResolvedDrawables() {
8254        mResolvedDrawables = false;
8255    }
8256
8257    /**
8258     * @hide
8259     */
8260    protected void viewClicked(InputMethodManager imm) {
8261        if (imm != null) {
8262            imm.viewClicked(this);
8263        }
8264    }
8265
8266    /**
8267     * Deletes the range of text [start, end[.
8268     * @hide
8269     */
8270    protected void deleteText_internal(int start, int end) {
8271        ((Editable) mText).delete(start, end);
8272    }
8273
8274    /**
8275     * Replaces the range of text [start, end[ by replacement text
8276     * @hide
8277     */
8278    protected void replaceText_internal(int start, int end, CharSequence text) {
8279        ((Editable) mText).replace(start, end, text);
8280    }
8281
8282    /**
8283     * Sets a span on the specified range of text
8284     * @hide
8285     */
8286    protected void setSpan_internal(Object span, int start, int end, int flags) {
8287        ((Editable) mText).setSpan(span, start, end, flags);
8288    }
8289
8290    /**
8291     * Moves the cursor to the specified offset position in text
8292     * @hide
8293     */
8294    protected void setCursorPosition_internal(int start, int end) {
8295        Selection.setSelection(((Editable) mText), start, end);
8296    }
8297
8298    /**
8299     * An Editor should be created as soon as any of the editable-specific fields (grouped
8300     * inside the Editor object) is assigned to a non-default value.
8301     * This method will create the Editor if needed.
8302     *
8303     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
8304     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
8305     * Editor for backward compatibility, as soon as one of these fields is assigned.
8306     *
8307     * Also note that for performance reasons, the mEditor is created when needed, but not
8308     * reset when no more edit-specific fields are needed.
8309     */
8310    private void createEditorIfNeeded() {
8311        if (mEditor == null) {
8312            mEditor = new Editor(this);
8313        }
8314    }
8315
8316    /**
8317     * @hide
8318     */
8319    @Override
8320    public CharSequence getIterableTextForAccessibility() {
8321        if (getContentDescription() == null) {
8322            if (!(mText instanceof Spannable)) {
8323                setText(mText, BufferType.SPANNABLE);
8324            }
8325            return mText;
8326        }
8327        return super.getIterableTextForAccessibility();
8328    }
8329
8330    /**
8331     * @hide
8332     */
8333    @Override
8334    public TextSegmentIterator getIteratorForGranularity(int granularity) {
8335        switch (granularity) {
8336            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
8337                Spannable text = (Spannable) getIterableTextForAccessibility();
8338                if (!TextUtils.isEmpty(text) && getLayout() != null) {
8339                    AccessibilityIterators.LineTextSegmentIterator iterator =
8340                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
8341                    iterator.initialize(text, getLayout());
8342                    return iterator;
8343                }
8344            } break;
8345            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
8346                Spannable text = (Spannable) getIterableTextForAccessibility();
8347                if (!TextUtils.isEmpty(text) && getLayout() != null) {
8348                    AccessibilityIterators.PageTextSegmentIterator iterator =
8349                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
8350                    iterator.initialize(this);
8351                    return iterator;
8352                }
8353            } break;
8354        }
8355        return super.getIteratorForGranularity(granularity);
8356    }
8357
8358    /**
8359     * @hide
8360     */
8361    @Override
8362    public int getAccessibilityCursorPosition() {
8363        if (TextUtils.isEmpty(getContentDescription())) {
8364            return getSelectionEnd();
8365        } else {
8366            return super.getAccessibilityCursorPosition();
8367        }
8368    }
8369
8370    /**
8371     * @hide
8372     */
8373    @Override
8374    public void setAccessibilityCursorPosition(int index) {
8375        if (getAccessibilityCursorPosition() == index) {
8376            return;
8377        }
8378        if (TextUtils.isEmpty(getContentDescription())) {
8379            if (index >= 0) {
8380                Selection.setSelection((Spannable) mText, index);
8381            } else {
8382                Selection.removeSelection((Spannable) mText);
8383            }
8384        } else {
8385            super.setAccessibilityCursorPosition(index);
8386        }
8387    }
8388
8389    /**
8390     * User interface state that is stored by TextView for implementing
8391     * {@link View#onSaveInstanceState}.
8392     */
8393    public static class SavedState extends BaseSavedState {
8394        int selStart;
8395        int selEnd;
8396        CharSequence text;
8397        boolean frozenWithFocus;
8398        CharSequence error;
8399
8400        SavedState(Parcelable superState) {
8401            super(superState);
8402        }
8403
8404        @Override
8405        public void writeToParcel(Parcel out, int flags) {
8406            super.writeToParcel(out, flags);
8407            out.writeInt(selStart);
8408            out.writeInt(selEnd);
8409            out.writeInt(frozenWithFocus ? 1 : 0);
8410            TextUtils.writeToParcel(text, out, flags);
8411
8412            if (error == null) {
8413                out.writeInt(0);
8414            } else {
8415                out.writeInt(1);
8416                TextUtils.writeToParcel(error, out, flags);
8417            }
8418        }
8419
8420        @Override
8421        public String toString() {
8422            String str = "TextView.SavedState{"
8423                    + Integer.toHexString(System.identityHashCode(this))
8424                    + " start=" + selStart + " end=" + selEnd;
8425            if (text != null) {
8426                str += " text=" + text;
8427            }
8428            return str + "}";
8429        }
8430
8431        @SuppressWarnings("hiding")
8432        public static final Parcelable.Creator<SavedState> CREATOR
8433                = new Parcelable.Creator<SavedState>() {
8434            public SavedState createFromParcel(Parcel in) {
8435                return new SavedState(in);
8436            }
8437
8438            public SavedState[] newArray(int size) {
8439                return new SavedState[size];
8440            }
8441        };
8442
8443        private SavedState(Parcel in) {
8444            super(in);
8445            selStart = in.readInt();
8446            selEnd = in.readInt();
8447            frozenWithFocus = (in.readInt() != 0);
8448            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8449
8450            if (in.readInt() != 0) {
8451                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
8452            }
8453        }
8454    }
8455
8456    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
8457        private char[] mChars;
8458        private int mStart, mLength;
8459
8460        public CharWrapper(char[] chars, int start, int len) {
8461            mChars = chars;
8462            mStart = start;
8463            mLength = len;
8464        }
8465
8466        /* package */ void set(char[] chars, int start, int len) {
8467            mChars = chars;
8468            mStart = start;
8469            mLength = len;
8470        }
8471
8472        public int length() {
8473            return mLength;
8474        }
8475
8476        public char charAt(int off) {
8477            return mChars[off + mStart];
8478        }
8479
8480        @Override
8481        public String toString() {
8482            return new String(mChars, mStart, mLength);
8483        }
8484
8485        public CharSequence subSequence(int start, int end) {
8486            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8487                throw new IndexOutOfBoundsException(start + ", " + end);
8488            }
8489
8490            return new String(mChars, start + mStart, end - start);
8491        }
8492
8493        public void getChars(int start, int end, char[] buf, int off) {
8494            if (start < 0 || end < 0 || start > mLength || end > mLength) {
8495                throw new IndexOutOfBoundsException(start + ", " + end);
8496            }
8497
8498            System.arraycopy(mChars, start + mStart, buf, off, end - start);
8499        }
8500
8501        public void drawText(Canvas c, int start, int end,
8502                             float x, float y, Paint p) {
8503            c.drawText(mChars, start + mStart, end - start, x, y, p);
8504        }
8505
8506        public void drawTextRun(Canvas c, int start, int end,
8507                int contextStart, int contextEnd, float x, float y, int flags, Paint p) {
8508            int count = end - start;
8509            int contextCount = contextEnd - contextStart;
8510            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
8511                    contextCount, x, y, flags, p);
8512        }
8513
8514        public float measureText(int start, int end, Paint p) {
8515            return p.measureText(mChars, start + mStart, end - start);
8516        }
8517
8518        public int getTextWidths(int start, int end, float[] widths, Paint p) {
8519            return p.getTextWidths(mChars, start + mStart, end - start, widths);
8520        }
8521
8522        public float getTextRunAdvances(int start, int end, int contextStart,
8523                int contextEnd, int flags, float[] advances, int advancesIndex,
8524                Paint p) {
8525            int count = end - start;
8526            int contextCount = contextEnd - contextStart;
8527            return p.getTextRunAdvances(mChars, start + mStart, count,
8528                    contextStart + mStart, contextCount, flags, advances,
8529                    advancesIndex);
8530        }
8531
8532        public float getTextRunAdvances(int start, int end, int contextStart,
8533                int contextEnd, int flags, float[] advances, int advancesIndex,
8534                Paint p, int reserved) {
8535            int count = end - start;
8536            int contextCount = contextEnd - contextStart;
8537            return p.getTextRunAdvances(mChars, start + mStart, count,
8538                    contextStart + mStart, contextCount, flags, advances,
8539                    advancesIndex, reserved);
8540        }
8541
8542        public int getTextRunCursor(int contextStart, int contextEnd, int flags,
8543                int offset, int cursorOpt, Paint p) {
8544            int contextCount = contextEnd - contextStart;
8545            return p.getTextRunCursor(mChars, contextStart + mStart,
8546                    contextCount, flags, offset + mStart, cursorOpt);
8547        }
8548    }
8549
8550    private static final class Marquee extends Handler {
8551        // TODO: Add an option to configure this
8552        private static final float MARQUEE_DELTA_MAX = 0.07f;
8553        private static final int MARQUEE_DELAY = 1200;
8554        private static final int MARQUEE_RESTART_DELAY = 1200;
8555        private static final int MARQUEE_RESOLUTION = 1000 / 30;
8556        private static final int MARQUEE_PIXELS_PER_SECOND = 30;
8557
8558        private static final byte MARQUEE_STOPPED = 0x0;
8559        private static final byte MARQUEE_STARTING = 0x1;
8560        private static final byte MARQUEE_RUNNING = 0x2;
8561
8562        private static final int MESSAGE_START = 0x1;
8563        private static final int MESSAGE_TICK = 0x2;
8564        private static final int MESSAGE_RESTART = 0x3;
8565
8566        private final WeakReference<TextView> mView;
8567
8568        private byte mStatus = MARQUEE_STOPPED;
8569        private final float mScrollUnit;
8570        private float mMaxScroll;
8571        float mMaxFadeScroll;
8572        private float mGhostStart;
8573        private float mGhostOffset;
8574        private float mFadeStop;
8575        private int mRepeatLimit;
8576
8577        float mScroll;
8578
8579        Marquee(TextView v) {
8580            final float density = v.getContext().getResources().getDisplayMetrics().density;
8581            mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / MARQUEE_RESOLUTION;
8582            mView = new WeakReference<TextView>(v);
8583        }
8584
8585        @Override
8586        public void handleMessage(Message msg) {
8587            switch (msg.what) {
8588                case MESSAGE_START:
8589                    mStatus = MARQUEE_RUNNING;
8590                    tick();
8591                    break;
8592                case MESSAGE_TICK:
8593                    tick();
8594                    break;
8595                case MESSAGE_RESTART:
8596                    if (mStatus == MARQUEE_RUNNING) {
8597                        if (mRepeatLimit >= 0) {
8598                            mRepeatLimit--;
8599                        }
8600                        start(mRepeatLimit);
8601                    }
8602                    break;
8603            }
8604        }
8605
8606        void tick() {
8607            if (mStatus != MARQUEE_RUNNING) {
8608                return;
8609            }
8610
8611            removeMessages(MESSAGE_TICK);
8612
8613            final TextView textView = mView.get();
8614            if (textView != null && (textView.isFocused() || textView.isSelected())) {
8615                mScroll += mScrollUnit;
8616                if (mScroll > mMaxScroll) {
8617                    mScroll = mMaxScroll;
8618                    sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY);
8619                } else {
8620                    sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION);
8621                }
8622                textView.invalidate();
8623            }
8624        }
8625
8626        void stop() {
8627            mStatus = MARQUEE_STOPPED;
8628            removeMessages(MESSAGE_START);
8629            removeMessages(MESSAGE_RESTART);
8630            removeMessages(MESSAGE_TICK);
8631            resetScroll();
8632        }
8633
8634        private void resetScroll() {
8635            mScroll = 0.0f;
8636            final TextView textView = mView.get();
8637            if (textView != null) textView.invalidate();
8638        }
8639
8640        void start(int repeatLimit) {
8641            if (repeatLimit == 0) {
8642                stop();
8643                return;
8644            }
8645            mRepeatLimit = repeatLimit;
8646            final TextView textView = mView.get();
8647            if (textView != null && textView.mLayout != null) {
8648                mStatus = MARQUEE_STARTING;
8649                mScroll = 0.0f;
8650                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
8651                        textView.getCompoundPaddingRight();
8652                final float lineWidth = textView.mLayout.getLineWidth(0);
8653                final float gap = textWidth / 3.0f;
8654                mGhostStart = lineWidth - textWidth + gap;
8655                mMaxScroll = mGhostStart + textWidth;
8656                mGhostOffset = lineWidth + gap;
8657                mFadeStop = lineWidth + textWidth / 6.0f;
8658                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
8659
8660                textView.invalidate();
8661                sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY);
8662            }
8663        }
8664
8665        float getGhostOffset() {
8666            return mGhostOffset;
8667        }
8668
8669        boolean shouldDrawLeftFade() {
8670            return mScroll <= mFadeStop;
8671        }
8672
8673        boolean shouldDrawGhost() {
8674            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
8675        }
8676
8677        boolean isRunning() {
8678            return mStatus == MARQUEE_RUNNING;
8679        }
8680
8681        boolean isStopped() {
8682            return mStatus == MARQUEE_STOPPED;
8683        }
8684    }
8685
8686    private class ChangeWatcher implements TextWatcher, SpanWatcher {
8687
8688        private CharSequence mBeforeText;
8689
8690        public void beforeTextChanged(CharSequence buffer, int start,
8691                                      int before, int after) {
8692            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
8693                    + " before=" + before + " after=" + after + ": " + buffer);
8694
8695            if (AccessibilityManager.getInstance(mContext).isEnabled()
8696                    && !isPasswordInputType(getInputType())
8697                    && !hasPasswordTransformationMethod()) {
8698                mBeforeText = buffer.toString();
8699            }
8700
8701            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
8702        }
8703
8704        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
8705            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
8706                    + " before=" + before + " after=" + after + ": " + buffer);
8707            TextView.this.handleTextChanged(buffer, start, before, after);
8708
8709            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
8710                    (isFocused() || isSelected() && isShown())) {
8711                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
8712                mBeforeText = null;
8713            }
8714        }
8715
8716        public void afterTextChanged(Editable buffer) {
8717            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
8718            TextView.this.sendAfterTextChanged(buffer);
8719
8720            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
8721                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
8722            }
8723        }
8724
8725        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
8726            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
8727                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
8728            TextView.this.spanChange(buf, what, s, st, e, en);
8729        }
8730
8731        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
8732            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
8733                    + " what=" + what + ": " + buf);
8734            TextView.this.spanChange(buf, what, -1, s, -1, e);
8735        }
8736
8737        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
8738            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
8739                    + " what=" + what + ": " + buf);
8740            TextView.this.spanChange(buf, what, s, -1, e, -1);
8741        }
8742    }
8743}
8744