TextView.java revision 816aa142023c75cf427401c21831193998bdf233 
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.annotation.ColorInt;
21import android.annotation.DrawableRes;
22import android.annotation.NonNull;
23import android.annotation.Nullable;
24import android.annotation.StringRes;
25import android.annotation.StyleRes;
26import android.annotation.XmlRes;
27import android.content.ClipData;
28import android.content.ClipboardManager;
29import android.content.Context;
30import android.content.UndoManager;
31import android.content.res.ColorStateList;
32import android.content.res.CompatibilityInfo;
33import android.content.res.Configuration;
34import android.content.res.Resources;
35import android.content.res.TypedArray;
36import android.content.res.XmlResourceParser;
37import android.graphics.Canvas;
38import android.graphics.Insets;
39import android.graphics.Paint;
40import android.graphics.Path;
41import android.graphics.PorterDuff;
42import android.graphics.Rect;
43import android.graphics.RectF;
44import android.graphics.Typeface;
45import android.graphics.drawable.Drawable;
46import android.inputmethodservice.ExtractEditText;
47import android.os.AsyncTask;
48import android.os.Bundle;
49import android.os.Parcel;
50import android.os.Parcelable;
51import android.os.ParcelableParcel;
52import android.os.SystemClock;
53import android.os.UserHandle;
54import android.provider.Settings;
55import android.text.BoringLayout;
56import android.text.DynamicLayout;
57import android.text.Editable;
58import android.text.GetChars;
59import android.text.GraphicsOperations;
60import android.text.InputFilter;
61import android.text.InputType;
62import android.text.Layout;
63import android.text.ParcelableSpan;
64import android.text.Selection;
65import android.text.SpanWatcher;
66import android.text.Spannable;
67import android.text.SpannableString;
68import android.text.SpannableStringBuilder;
69import android.text.Spanned;
70import android.text.SpannedString;
71import android.text.StaticLayout;
72import android.text.TextDirectionHeuristic;
73import android.text.TextDirectionHeuristics;
74import android.text.TextPaint;
75import android.text.TextUtils;
76import android.text.TextUtils.TruncateAt;
77import android.text.TextWatcher;
78import android.text.method.AllCapsTransformationMethod;
79import android.text.method.ArrowKeyMovementMethod;
80import android.text.method.DateKeyListener;
81import android.text.method.DateTimeKeyListener;
82import android.text.method.DialerKeyListener;
83import android.text.method.DigitsKeyListener;
84import android.text.method.KeyListener;
85import android.text.method.LinkMovementMethod;
86import android.text.method.MetaKeyKeyListener;
87import android.text.method.MovementMethod;
88import android.text.method.PasswordTransformationMethod;
89import android.text.method.SingleLineTransformationMethod;
90import android.text.method.TextKeyListener;
91import android.text.method.TimeKeyListener;
92import android.text.method.TransformationMethod;
93import android.text.method.TransformationMethod2;
94import android.text.method.WordIterator;
95import android.text.style.CharacterStyle;
96import android.text.style.ClickableSpan;
97import android.text.style.ParagraphStyle;
98import android.text.style.SpellCheckSpan;
99import android.text.style.SuggestionSpan;
100import android.text.style.URLSpan;
101import android.text.style.UpdateAppearance;
102import android.text.util.Linkify;
103import android.util.AttributeSet;
104import android.util.Log;
105import android.util.TypedValue;
106import android.view.AccessibilityIterators.TextSegmentIterator;
107import android.view.ActionMode;
108import android.view.Choreographer;
109import android.view.DragEvent;
110import android.view.Gravity;
111import android.view.HapticFeedbackConstants;
112import android.view.KeyCharacterMap;
113import android.view.KeyEvent;
114import android.view.MotionEvent;
115import android.view.View;
116import android.view.ViewAssistStructure;
117import android.view.ViewConfiguration;
118import android.view.ViewDebug;
119import android.view.ViewGroup.LayoutParams;
120import android.view.ViewRootImpl;
121import android.view.ViewTreeObserver;
122import android.view.accessibility.AccessibilityEvent;
123import android.view.accessibility.AccessibilityManager;
124import android.view.accessibility.AccessibilityNodeInfo;
125import android.view.animation.AnimationUtils;
126import android.view.inputmethod.BaseInputConnection;
127import android.view.inputmethod.CompletionInfo;
128import android.view.inputmethod.CorrectionInfo;
129import android.view.inputmethod.EditorInfo;
130import android.view.inputmethod.ExtractedText;
131import android.view.inputmethod.ExtractedTextRequest;
132import android.view.inputmethod.InputConnection;
133import android.view.inputmethod.InputMethodManager;
134import android.view.textservice.SpellCheckerSubtype;
135import android.view.textservice.TextServicesManager;
136import android.widget.RemoteViews.RemoteView;
137
138import com.android.internal.util.FastMath;
139import com.android.internal.widget.EditableInputConnection;
140
141import org.xmlpull.v1.XmlPullParserException;
142
143import java.io.IOException;
144import java.lang.ref.WeakReference;
145import java.util.ArrayList;
146import java.util.Locale;
147
148import static android.os.Build.VERSION_CODES.JELLY_BEAN_MR1;
149
150/**
151 * Displays text to the user and optionally allows them to edit it.  A TextView
152 * is a complete text editor, however the basic class is configured to not
153 * allow editing; see {@link EditText} for a subclass that configures the text
154 * view for editing.
155 *
156 * <p>
157 * To allow users to copy some or all of the TextView's value and paste it somewhere else, set the
158 * XML attribute {@link android.R.styleable#TextView_textIsSelectable
159 * android:textIsSelectable} to "true" or call
160 * {@link #setTextIsSelectable setTextIsSelectable(true)}. The {@code textIsSelectable} flag
161 * allows users to make selection gestures in the TextView, which in turn triggers the system's
162 * built-in copy/paste controls.
163 * <p>
164 * <b>XML attributes</b>
165 * <p>
166 * See {@link android.R.styleable#TextView TextView Attributes},
167 * {@link android.R.styleable#View View Attributes}
168 *
169 * @attr ref android.R.styleable#TextView_text
170 * @attr ref android.R.styleable#TextView_bufferType
171 * @attr ref android.R.styleable#TextView_hint
172 * @attr ref android.R.styleable#TextView_textColor
173 * @attr ref android.R.styleable#TextView_textColorHighlight
174 * @attr ref android.R.styleable#TextView_textColorHint
175 * @attr ref android.R.styleable#TextView_textAppearance
176 * @attr ref android.R.styleable#TextView_textColorLink
177 * @attr ref android.R.styleable#TextView_textSize
178 * @attr ref android.R.styleable#TextView_textScaleX
179 * @attr ref android.R.styleable#TextView_fontFamily
180 * @attr ref android.R.styleable#TextView_typeface
181 * @attr ref android.R.styleable#TextView_textStyle
182 * @attr ref android.R.styleable#TextView_cursorVisible
183 * @attr ref android.R.styleable#TextView_maxLines
184 * @attr ref android.R.styleable#TextView_maxHeight
185 * @attr ref android.R.styleable#TextView_lines
186 * @attr ref android.R.styleable#TextView_height
187 * @attr ref android.R.styleable#TextView_minLines
188 * @attr ref android.R.styleable#TextView_minHeight
189 * @attr ref android.R.styleable#TextView_maxEms
190 * @attr ref android.R.styleable#TextView_maxWidth
191 * @attr ref android.R.styleable#TextView_ems
192 * @attr ref android.R.styleable#TextView_width
193 * @attr ref android.R.styleable#TextView_minEms
194 * @attr ref android.R.styleable#TextView_minWidth
195 * @attr ref android.R.styleable#TextView_gravity
196 * @attr ref android.R.styleable#TextView_scrollHorizontally
197 * @attr ref android.R.styleable#TextView_password
198 * @attr ref android.R.styleable#TextView_singleLine
199 * @attr ref android.R.styleable#TextView_selectAllOnFocus
200 * @attr ref android.R.styleable#TextView_includeFontPadding
201 * @attr ref android.R.styleable#TextView_maxLength
202 * @attr ref android.R.styleable#TextView_shadowColor
203 * @attr ref android.R.styleable#TextView_shadowDx
204 * @attr ref android.R.styleable#TextView_shadowDy
205 * @attr ref android.R.styleable#TextView_shadowRadius
206 * @attr ref android.R.styleable#TextView_autoLink
207 * @attr ref android.R.styleable#TextView_linksClickable
208 * @attr ref android.R.styleable#TextView_numeric
209 * @attr ref android.R.styleable#TextView_digits
210 * @attr ref android.R.styleable#TextView_phoneNumber
211 * @attr ref android.R.styleable#TextView_inputMethod
212 * @attr ref android.R.styleable#TextView_capitalize
213 * @attr ref android.R.styleable#TextView_autoText
214 * @attr ref android.R.styleable#TextView_editable
215 * @attr ref android.R.styleable#TextView_freezesText
216 * @attr ref android.R.styleable#TextView_ellipsize
217 * @attr ref android.R.styleable#TextView_drawableTop
218 * @attr ref android.R.styleable#TextView_drawableBottom
219 * @attr ref android.R.styleable#TextView_drawableRight
220 * @attr ref android.R.styleable#TextView_drawableLeft
221 * @attr ref android.R.styleable#TextView_drawableStart
222 * @attr ref android.R.styleable#TextView_drawableEnd
223 * @attr ref android.R.styleable#TextView_drawablePadding
224 * @attr ref android.R.styleable#TextView_drawableTint
225 * @attr ref android.R.styleable#TextView_drawableTintMode
226 * @attr ref android.R.styleable#TextView_lineSpacingExtra
227 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
228 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
229 * @attr ref android.R.styleable#TextView_inputType
230 * @attr ref android.R.styleable#TextView_imeOptions
231 * @attr ref android.R.styleable#TextView_privateImeOptions
232 * @attr ref android.R.styleable#TextView_imeActionLabel
233 * @attr ref android.R.styleable#TextView_imeActionId
234 * @attr ref android.R.styleable#TextView_editorExtras
235 * @attr ref android.R.styleable#TextView_elegantTextHeight
236 * @attr ref android.R.styleable#TextView_letterSpacing
237 * @attr ref android.R.styleable#TextView_fontFeatureSettings
238 */
239@RemoteView
240public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
241    static final String LOG_TAG = "TextView";
242    static final boolean DEBUG_EXTRACT = false;
243
244    // Enum for the "typeface" XML parameter.
245    // TODO: How can we get this from the XML instead of hardcoding it here?
246    private static final int SANS = 1;
247    private static final int SERIF = 2;
248    private static final int MONOSPACE = 3;
249
250    // Bitfield for the "numeric" XML parameter.
251    // TODO: How can we get this from the XML instead of hardcoding it here?
252    private static final int SIGNED = 2;
253    private static final int DECIMAL = 4;
254
255    /**
256     * Draw marquee text with fading edges as usual
257     */
258    private static final int MARQUEE_FADE_NORMAL = 0;
259
260    /**
261     * Draw marquee text as ellipsize end while inactive instead of with the fade.
262     * (Useful for devices where the fade can be expensive if overdone)
263     */
264    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
265
266    /**
267     * Draw marquee text with fading edges because it is currently active/animating.
268     */
269    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
270
271    private static final int LINES = 1;
272    private static final int EMS = LINES;
273    private static final int PIXELS = 2;
274
275    private static final RectF TEMP_RECTF = new RectF();
276
277    // XXX should be much larger
278    private static final int VERY_WIDE = 1024*1024;
279    private static final int ANIMATED_SCROLL_GAP = 250;
280
281    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
282    private static final Spanned EMPTY_SPANNED = new SpannedString("");
283
284    private static final int CHANGE_WATCHER_PRIORITY = 100;
285
286    // New state used to change background based on whether this TextView is multiline.
287    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
288
289    // System wide time for last cut or copy action.
290    static long LAST_CUT_OR_COPY_TIME;
291
292    private ColorStateList mTextColor;
293    private ColorStateList mHintTextColor;
294    private ColorStateList mLinkTextColor;
295    @ViewDebug.ExportedProperty(category = "text")
296    private int mCurTextColor;
297    private int mCurHintTextColor;
298    private boolean mFreezesText;
299    private boolean mDispatchTemporaryDetach;
300
301    /** Whether this view is temporarily detached from the parent view. */
302    boolean mTemporaryDetach;
303
304    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
305    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
306
307    private float mShadowRadius, mShadowDx, mShadowDy;
308    private int mShadowColor;
309
310    private boolean mPreDrawRegistered;
311    private boolean mPreDrawListenerDetached;
312
313    // A flag to prevent repeated movements from escaping the enclosing text view. The idea here is
314    // that if a user is holding down a movement key to traverse text, we shouldn't also traverse
315    // the view hierarchy. On the other hand, if the user is using the movement key to traverse views
316    // (i.e. the first movement was to traverse out of this view, or this view was traversed into by
317    // the user holding the movement key down) then we shouldn't prevent the focus from changing.
318    private boolean mPreventDefaultMovement;
319
320    private TextUtils.TruncateAt mEllipsize;
321
322    static class Drawables {
323        static final int LEFT = 0;
324        static final int TOP = 1;
325        static final int RIGHT = 2;
326        static final int BOTTOM = 3;
327
328        static final int DRAWABLE_NONE = -1;
329        static final int DRAWABLE_RIGHT = 0;
330        static final int DRAWABLE_LEFT = 1;
331
332        final Rect mCompoundRect = new Rect();
333
334        final Drawable[] mShowing = new Drawable[4];
335
336        ColorStateList mTintList;
337        PorterDuff.Mode mTintMode;
338        boolean mHasTint;
339        boolean mHasTintMode;
340
341        Drawable mDrawableStart, mDrawableEnd, mDrawableError, mDrawableTemp;
342        Drawable mDrawableLeftInitial, mDrawableRightInitial;
343
344        boolean mIsRtlCompatibilityMode;
345        boolean mOverride;
346
347        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
348                mDrawableSizeStart, mDrawableSizeEnd, mDrawableSizeError, mDrawableSizeTemp;
349
350        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
351                mDrawableHeightStart, mDrawableHeightEnd, mDrawableHeightError, mDrawableHeightTemp;
352
353        int mDrawablePadding;
354
355        int mDrawableSaved = DRAWABLE_NONE;
356
357        public Drawables(Context context) {
358            final int targetSdkVersion = context.getApplicationInfo().targetSdkVersion;
359            mIsRtlCompatibilityMode = (targetSdkVersion < JELLY_BEAN_MR1 ||
360                !context.getApplicationInfo().hasRtlSupport());
361            mOverride = false;
362        }
363
364        public void resolveWithLayoutDirection(int layoutDirection) {
365            // First reset "left" and "right" drawables to their initial values
366            mShowing[Drawables.LEFT] = mDrawableLeftInitial;
367            mShowing[Drawables.RIGHT] = mDrawableRightInitial;
368
369            if (mIsRtlCompatibilityMode) {
370                // Use "start" drawable as "left" drawable if the "left" drawable was not defined
371                if (mDrawableStart != null && mShowing[Drawables.LEFT] == null) {
372                    mShowing[Drawables.LEFT] = mDrawableStart;
373                    mDrawableSizeLeft = mDrawableSizeStart;
374                    mDrawableHeightLeft = mDrawableHeightStart;
375                }
376                // Use "end" drawable as "right" drawable if the "right" drawable was not defined
377                if (mDrawableEnd != null && mShowing[Drawables.RIGHT] == null) {
378                    mShowing[Drawables.RIGHT] = mDrawableEnd;
379                    mDrawableSizeRight = mDrawableSizeEnd;
380                    mDrawableHeightRight = mDrawableHeightEnd;
381                }
382            } else {
383                // JB-MR1+ normal case: "start" / "end" drawables are overriding "left" / "right"
384                // drawable if and only if they have been defined
385                switch(layoutDirection) {
386                    case LAYOUT_DIRECTION_RTL:
387                        if (mOverride) {
388                            mShowing[Drawables.RIGHT] = mDrawableStart;
389                            mDrawableSizeRight = mDrawableSizeStart;
390                            mDrawableHeightRight = mDrawableHeightStart;
391
392                            mShowing[Drawables.LEFT] = mDrawableEnd;
393                            mDrawableSizeLeft = mDrawableSizeEnd;
394                            mDrawableHeightLeft = mDrawableHeightEnd;
395                        }
396                        break;
397
398                    case LAYOUT_DIRECTION_LTR:
399                    default:
400                        if (mOverride) {
401                            mShowing[Drawables.LEFT] = mDrawableStart;
402                            mDrawableSizeLeft = mDrawableSizeStart;
403                            mDrawableHeightLeft = mDrawableHeightStart;
404
405                            mShowing[Drawables.RIGHT] = mDrawableEnd;
406                            mDrawableSizeRight = mDrawableSizeEnd;
407                            mDrawableHeightRight = mDrawableHeightEnd;
408                        }
409                        break;
410                }
411            }
412            applyErrorDrawableIfNeeded(layoutDirection);
413            updateDrawablesLayoutDirection(layoutDirection);
414        }
415
416        private void updateDrawablesLayoutDirection(int layoutDirection) {
417            for (Drawable dr : mShowing) {
418                if (dr != null) {
419                    dr.setLayoutDirection(layoutDirection);
420                }
421            }
422        }
423
424        public void setErrorDrawable(Drawable dr, TextView tv) {
425            if (mDrawableError != dr && mDrawableError != null) {
426                mDrawableError.setCallback(null);
427            }
428            mDrawableError = dr;
429
430            if (mDrawableError != null) {
431                final Rect compoundRect = mCompoundRect;
432                final int[] state = tv.getDrawableState();
433
434                mDrawableError.setState(state);
435                mDrawableError.copyBounds(compoundRect);
436                mDrawableError.setCallback(tv);
437                mDrawableSizeError = compoundRect.width();
438                mDrawableHeightError = compoundRect.height();
439            } else {
440                mDrawableSizeError = mDrawableHeightError = 0;
441            }
442        }
443
444        private void applyErrorDrawableIfNeeded(int layoutDirection) {
445            // first restore the initial state if needed
446            switch (mDrawableSaved) {
447                case DRAWABLE_LEFT:
448                    mShowing[Drawables.LEFT] = mDrawableTemp;
449                    mDrawableSizeLeft = mDrawableSizeTemp;
450                    mDrawableHeightLeft = mDrawableHeightTemp;
451                    break;
452                case DRAWABLE_RIGHT:
453                    mShowing[Drawables.RIGHT] = mDrawableTemp;
454                    mDrawableSizeRight = mDrawableSizeTemp;
455                    mDrawableHeightRight = mDrawableHeightTemp;
456                    break;
457                case DRAWABLE_NONE:
458                default:
459            }
460            // then, if needed, assign the Error drawable to the correct location
461            if (mDrawableError != null) {
462                switch(layoutDirection) {
463                    case LAYOUT_DIRECTION_RTL:
464                        mDrawableSaved = DRAWABLE_LEFT;
465
466                        mDrawableTemp = mShowing[Drawables.LEFT];
467                        mDrawableSizeTemp = mDrawableSizeLeft;
468                        mDrawableHeightTemp = mDrawableHeightLeft;
469
470                        mShowing[Drawables.LEFT] = mDrawableError;
471                        mDrawableSizeLeft = mDrawableSizeError;
472                        mDrawableHeightLeft = mDrawableHeightError;
473                        break;
474                    case LAYOUT_DIRECTION_LTR:
475                    default:
476                        mDrawableSaved = DRAWABLE_RIGHT;
477
478                        mDrawableTemp = mShowing[Drawables.RIGHT];
479                        mDrawableSizeTemp = mDrawableSizeRight;
480                        mDrawableHeightTemp = mDrawableHeightRight;
481
482                        mShowing[Drawables.RIGHT] = mDrawableError;
483                        mDrawableSizeRight = mDrawableSizeError;
484                        mDrawableHeightRight = mDrawableHeightError;
485                        break;
486                }
487            }
488        }
489    }
490
491    Drawables mDrawables;
492
493    private CharWrapper mCharWrapper;
494
495    private Marquee mMarquee;
496    private boolean mRestartMarquee;
497
498    private int mMarqueeRepeatLimit = 3;
499
500    private int mLastLayoutDirection = -1;
501
502    /**
503     * On some devices the fading edges add a performance penalty if used
504     * extensively in the same layout. This mode indicates how the marquee
505     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
506     */
507    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
508
509    /**
510     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
511     * the layout that should be used when the mode switches.
512     */
513    private Layout mSavedMarqueeModeLayout;
514
515    @ViewDebug.ExportedProperty(category = "text")
516    private CharSequence mText;
517    private CharSequence mTransformed;
518    private BufferType mBufferType = BufferType.NORMAL;
519
520    private CharSequence mHint;
521    private Layout mHintLayout;
522
523    private MovementMethod mMovement;
524
525    private TransformationMethod mTransformation;
526    private boolean mAllowTransformationLengthChange;
527    private ChangeWatcher mChangeWatcher;
528
529    private ArrayList<TextWatcher> mListeners;
530
531    // display attributes
532    private final TextPaint mTextPaint;
533    private boolean mUserSetTextScaleX;
534    private Layout mLayout;
535    private boolean mLocaleChanged = false;
536
537    @ViewDebug.ExportedProperty(category = "text")
538    private int mGravity = Gravity.TOP | Gravity.START;
539    private boolean mHorizontallyScrolling;
540
541    private int mAutoLinkMask;
542    private boolean mLinksClickable = true;
543
544    private float mSpacingMult = 1.0f;
545    private float mSpacingAdd = 0.0f;
546
547    private int mBreakStrategy;
548
549    private int mMaximum = Integer.MAX_VALUE;
550    private int mMaxMode = LINES;
551    private int mMinimum = 0;
552    private int mMinMode = LINES;
553
554    private int mOldMaximum = mMaximum;
555    private int mOldMaxMode = mMaxMode;
556
557    private int mMaxWidth = Integer.MAX_VALUE;
558    private int mMaxWidthMode = PIXELS;
559    private int mMinWidth = 0;
560    private int mMinWidthMode = PIXELS;
561
562    private boolean mSingleLine;
563    private int mDesiredHeightAtMeasure = -1;
564    private boolean mIncludePad = true;
565    private int mDeferScroll = -1;
566
567    // tmp primitives, so we don't alloc them on each draw
568    private Rect mTempRect;
569    private long mLastScroll;
570    private Scroller mScroller;
571
572    private BoringLayout.Metrics mBoring, mHintBoring;
573    private BoringLayout mSavedLayout, mSavedHintLayout;
574
575    private TextDirectionHeuristic mTextDir;
576
577    private InputFilter[] mFilters = NO_FILTERS;
578
579    private volatile Locale mCurrentSpellCheckerLocaleCache;
580
581    // It is possible to have a selection even when mEditor is null (programmatically set, like when
582    // a link is pressed). These highlight-related fields do not go in mEditor.
583    int mHighlightColor = 0x6633B5E5;
584    private Path mHighlightPath;
585    private final Paint mHighlightPaint;
586    private boolean mHighlightPathBogus = true;
587
588    // Although these fields are specific to editable text, they are not added to Editor because
589    // they are defined by the TextView's style and are theme-dependent.
590    int mCursorDrawableRes;
591    // These four fields, could be moved to Editor, since we know their default values and we
592    // could condition the creation of the Editor to a non standard value. This is however
593    // brittle since the hardcoded values here (such as
594    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
595    // default style is modified.
596    int mTextSelectHandleLeftRes;
597    int mTextSelectHandleRightRes;
598    int mTextSelectHandleRes;
599    int mTextEditSuggestionItemLayout;
600
601    /**
602     * EditText specific data, created on demand when one of the Editor fields is used.
603     * See {@link #createEditorIfNeeded()}.
604     */
605    private Editor mEditor;
606
607    /*
608     * Kick-start the font cache for the zygote process (to pay the cost of
609     * initializing freetype for our default font only once).
610     */
611    static {
612        Paint p = new Paint();
613        p.setAntiAlias(true);
614        // We don't care about the result, just the side-effect of measuring.
615        p.measureText("H");
616    }
617
618    /**
619     * Interface definition for a callback to be invoked when an action is
620     * performed on the editor.
621     */
622    public interface OnEditorActionListener {
623        /**
624         * Called when an action is being performed.
625         *
626         * @param v The view that was clicked.
627         * @param actionId Identifier of the action.  This will be either the
628         * identifier you supplied, or {@link EditorInfo#IME_NULL
629         * EditorInfo.IME_NULL} if being called due to the enter key
630         * being pressed.
631         * @param event If triggered by an enter key, this is the event;
632         * otherwise, this is null.
633         * @return Return true if you have consumed the action, else false.
634         */
635        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
636    }
637
638    public TextView(Context context) {
639        this(context, null);
640    }
641
642    public TextView(Context context, @Nullable AttributeSet attrs) {
643        this(context, attrs, com.android.internal.R.attr.textViewStyle);
644    }
645
646    public TextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
647        this(context, attrs, defStyleAttr, 0);
648    }
649
650    @SuppressWarnings("deprecation")
651    public TextView(
652            Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
653        super(context, attrs, defStyleAttr, defStyleRes);
654
655        mText = "";
656
657        final Resources res = getResources();
658        final CompatibilityInfo compat = res.getCompatibilityInfo();
659
660        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
661        mTextPaint.density = res.getDisplayMetrics().density;
662        mTextPaint.setCompatibilityScaling(compat.applicationScale);
663
664        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
665        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
666
667        mMovement = getDefaultMovementMethod();
668
669        mTransformation = null;
670
671        int textColorHighlight = 0;
672        ColorStateList textColor = null;
673        ColorStateList textColorHint = null;
674        ColorStateList textColorLink = null;
675        int textSize = 15;
676        String fontFamily = null;
677        boolean fontFamilyExplicit = false;
678        int typefaceIndex = -1;
679        int styleIndex = -1;
680        boolean allCaps = false;
681        int shadowcolor = 0;
682        float dx = 0, dy = 0, r = 0;
683        boolean elegant = false;
684        float letterSpacing = 0;
685        String fontFeatureSettings = null;
686        mBreakStrategy = Layout.BREAK_STRATEGY_SIMPLE;
687
688        final Resources.Theme theme = context.getTheme();
689
690        /*
691         * Look the appearance up without checking first if it exists because
692         * almost every TextView has one and it greatly simplifies the logic
693         * to be able to parse the appearance first and then let specific tags
694         * for this View override it.
695         */
696        TypedArray a = theme.obtainStyledAttributes(attrs,
697                com.android.internal.R.styleable.TextViewAppearance, defStyleAttr, defStyleRes);
698        TypedArray appearance = null;
699        int ap = a.getResourceId(
700                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
701        a.recycle();
702        if (ap != -1) {
703            appearance = theme.obtainStyledAttributes(
704                    ap, com.android.internal.R.styleable.TextAppearance);
705        }
706        if (appearance != null) {
707            int n = appearance.getIndexCount();
708            for (int i = 0; i < n; i++) {
709                int attr = appearance.getIndex(i);
710
711                switch (attr) {
712                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
713                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
714                    break;
715
716                case com.android.internal.R.styleable.TextAppearance_textColor:
717                    textColor = appearance.getColorStateList(attr);
718                    break;
719
720                case com.android.internal.R.styleable.TextAppearance_textColorHint:
721                    textColorHint = appearance.getColorStateList(attr);
722                    break;
723
724                case com.android.internal.R.styleable.TextAppearance_textColorLink:
725                    textColorLink = appearance.getColorStateList(attr);
726                    break;
727
728                case com.android.internal.R.styleable.TextAppearance_textSize:
729                    textSize = appearance.getDimensionPixelSize(attr, textSize);
730                    break;
731
732                case com.android.internal.R.styleable.TextAppearance_typeface:
733                    typefaceIndex = appearance.getInt(attr, -1);
734                    break;
735
736                case com.android.internal.R.styleable.TextAppearance_fontFamily:
737                    fontFamily = appearance.getString(attr);
738                    break;
739
740                case com.android.internal.R.styleable.TextAppearance_textStyle:
741                    styleIndex = appearance.getInt(attr, -1);
742                    break;
743
744                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
745                    allCaps = appearance.getBoolean(attr, false);
746                    break;
747
748                case com.android.internal.R.styleable.TextAppearance_shadowColor:
749                    shadowcolor = appearance.getInt(attr, 0);
750                    break;
751
752                case com.android.internal.R.styleable.TextAppearance_shadowDx:
753                    dx = appearance.getFloat(attr, 0);
754                    break;
755
756                case com.android.internal.R.styleable.TextAppearance_shadowDy:
757                    dy = appearance.getFloat(attr, 0);
758                    break;
759
760                case com.android.internal.R.styleable.TextAppearance_shadowRadius:
761                    r = appearance.getFloat(attr, 0);
762                    break;
763
764                case com.android.internal.R.styleable.TextAppearance_elegantTextHeight:
765                    elegant = appearance.getBoolean(attr, false);
766                    break;
767
768                case com.android.internal.R.styleable.TextAppearance_letterSpacing:
769                    letterSpacing = appearance.getFloat(attr, 0);
770                    break;
771
772                case com.android.internal.R.styleable.TextAppearance_fontFeatureSettings:
773                    fontFeatureSettings = appearance.getString(attr);
774                    break;
775                }
776            }
777
778            appearance.recycle();
779        }
780
781        boolean editable = getDefaultEditable();
782        CharSequence inputMethod = null;
783        int numeric = 0;
784        CharSequence digits = null;
785        boolean phone = false;
786        boolean autotext = false;
787        int autocap = -1;
788        int buffertype = 0;
789        boolean selectallonfocus = false;
790        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
791            drawableBottom = null, drawableStart = null, drawableEnd = null;
792        ColorStateList drawableTint = null;
793        PorterDuff.Mode drawableTintMode = null;
794        int drawablePadding = 0;
795        int ellipsize = -1;
796        boolean singleLine = false;
797        int maxlength = -1;
798        CharSequence text = "";
799        CharSequence hint = null;
800        boolean password = false;
801        int inputType = EditorInfo.TYPE_NULL;
802
803        a = theme.obtainStyledAttributes(
804                    attrs, com.android.internal.R.styleable.TextView, defStyleAttr, defStyleRes);
805
806        int n = a.getIndexCount();
807        for (int i = 0; i < n; i++) {
808            int attr = a.getIndex(i);
809
810            switch (attr) {
811            case com.android.internal.R.styleable.TextView_editable:
812                editable = a.getBoolean(attr, editable);
813                break;
814
815            case com.android.internal.R.styleable.TextView_inputMethod:
816                inputMethod = a.getText(attr);
817                break;
818
819            case com.android.internal.R.styleable.TextView_numeric:
820                numeric = a.getInt(attr, numeric);
821                break;
822
823            case com.android.internal.R.styleable.TextView_digits:
824                digits = a.getText(attr);
825                break;
826
827            case com.android.internal.R.styleable.TextView_phoneNumber:
828                phone = a.getBoolean(attr, phone);
829                break;
830
831            case com.android.internal.R.styleable.TextView_autoText:
832                autotext = a.getBoolean(attr, autotext);
833                break;
834
835            case com.android.internal.R.styleable.TextView_capitalize:
836                autocap = a.getInt(attr, autocap);
837                break;
838
839            case com.android.internal.R.styleable.TextView_bufferType:
840                buffertype = a.getInt(attr, buffertype);
841                break;
842
843            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
844                selectallonfocus = a.getBoolean(attr, selectallonfocus);
845                break;
846
847            case com.android.internal.R.styleable.TextView_autoLink:
848                mAutoLinkMask = a.getInt(attr, 0);
849                break;
850
851            case com.android.internal.R.styleable.TextView_linksClickable:
852                mLinksClickable = a.getBoolean(attr, true);
853                break;
854
855            case com.android.internal.R.styleable.TextView_drawableLeft:
856                drawableLeft = a.getDrawable(attr);
857                break;
858
859            case com.android.internal.R.styleable.TextView_drawableTop:
860                drawableTop = a.getDrawable(attr);
861                break;
862
863            case com.android.internal.R.styleable.TextView_drawableRight:
864                drawableRight = a.getDrawable(attr);
865                break;
866
867            case com.android.internal.R.styleable.TextView_drawableBottom:
868                drawableBottom = a.getDrawable(attr);
869                break;
870
871            case com.android.internal.R.styleable.TextView_drawableStart:
872                drawableStart = a.getDrawable(attr);
873                break;
874
875            case com.android.internal.R.styleable.TextView_drawableEnd:
876                drawableEnd = a.getDrawable(attr);
877                break;
878
879            case com.android.internal.R.styleable.TextView_drawableTint:
880                drawableTint = a.getColorStateList(attr);
881                break;
882
883            case com.android.internal.R.styleable.TextView_drawableTintMode:
884                drawableTintMode = Drawable.parseTintMode(a.getInt(attr, -1), drawableTintMode);
885                break;
886
887            case com.android.internal.R.styleable.TextView_drawablePadding:
888                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
889                break;
890
891            case com.android.internal.R.styleable.TextView_maxLines:
892                setMaxLines(a.getInt(attr, -1));
893                break;
894
895            case com.android.internal.R.styleable.TextView_maxHeight:
896                setMaxHeight(a.getDimensionPixelSize(attr, -1));
897                break;
898
899            case com.android.internal.R.styleable.TextView_lines:
900                setLines(a.getInt(attr, -1));
901                break;
902
903            case com.android.internal.R.styleable.TextView_height:
904                setHeight(a.getDimensionPixelSize(attr, -1));
905                break;
906
907            case com.android.internal.R.styleable.TextView_minLines:
908                setMinLines(a.getInt(attr, -1));
909                break;
910
911            case com.android.internal.R.styleable.TextView_minHeight:
912                setMinHeight(a.getDimensionPixelSize(attr, -1));
913                break;
914
915            case com.android.internal.R.styleable.TextView_maxEms:
916                setMaxEms(a.getInt(attr, -1));
917                break;
918
919            case com.android.internal.R.styleable.TextView_maxWidth:
920                setMaxWidth(a.getDimensionPixelSize(attr, -1));
921                break;
922
923            case com.android.internal.R.styleable.TextView_ems:
924                setEms(a.getInt(attr, -1));
925                break;
926
927            case com.android.internal.R.styleable.TextView_width:
928                setWidth(a.getDimensionPixelSize(attr, -1));
929                break;
930
931            case com.android.internal.R.styleable.TextView_minEms:
932                setMinEms(a.getInt(attr, -1));
933                break;
934
935            case com.android.internal.R.styleable.TextView_minWidth:
936                setMinWidth(a.getDimensionPixelSize(attr, -1));
937                break;
938
939            case com.android.internal.R.styleable.TextView_gravity:
940                setGravity(a.getInt(attr, -1));
941                break;
942
943            case com.android.internal.R.styleable.TextView_hint:
944                hint = a.getText(attr);
945                break;
946
947            case com.android.internal.R.styleable.TextView_text:
948                text = a.getText(attr);
949                break;
950
951            case com.android.internal.R.styleable.TextView_scrollHorizontally:
952                if (a.getBoolean(attr, false)) {
953                    setHorizontallyScrolling(true);
954                }
955                break;
956
957            case com.android.internal.R.styleable.TextView_singleLine:
958                singleLine = a.getBoolean(attr, singleLine);
959                break;
960
961            case com.android.internal.R.styleable.TextView_ellipsize:
962                ellipsize = a.getInt(attr, ellipsize);
963                break;
964
965            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
966                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
967                break;
968
969            case com.android.internal.R.styleable.TextView_includeFontPadding:
970                if (!a.getBoolean(attr, true)) {
971                    setIncludeFontPadding(false);
972                }
973                break;
974
975            case com.android.internal.R.styleable.TextView_cursorVisible:
976                if (!a.getBoolean(attr, true)) {
977                    setCursorVisible(false);
978                }
979                break;
980
981            case com.android.internal.R.styleable.TextView_maxLength:
982                maxlength = a.getInt(attr, -1);
983                break;
984
985            case com.android.internal.R.styleable.TextView_textScaleX:
986                setTextScaleX(a.getFloat(attr, 1.0f));
987                break;
988
989            case com.android.internal.R.styleable.TextView_freezesText:
990                mFreezesText = a.getBoolean(attr, false);
991                break;
992
993            case com.android.internal.R.styleable.TextView_shadowColor:
994                shadowcolor = a.getInt(attr, 0);
995                break;
996
997            case com.android.internal.R.styleable.TextView_shadowDx:
998                dx = a.getFloat(attr, 0);
999                break;
1000
1001            case com.android.internal.R.styleable.TextView_shadowDy:
1002                dy = a.getFloat(attr, 0);
1003                break;
1004
1005            case com.android.internal.R.styleable.TextView_shadowRadius:
1006                r = a.getFloat(attr, 0);
1007                break;
1008
1009            case com.android.internal.R.styleable.TextView_enabled:
1010                setEnabled(a.getBoolean(attr, isEnabled()));
1011                break;
1012
1013            case com.android.internal.R.styleable.TextView_textColorHighlight:
1014                textColorHighlight = a.getColor(attr, textColorHighlight);
1015                break;
1016
1017            case com.android.internal.R.styleable.TextView_textColor:
1018                textColor = a.getColorStateList(attr);
1019                break;
1020
1021            case com.android.internal.R.styleable.TextView_textColorHint:
1022                textColorHint = a.getColorStateList(attr);
1023                break;
1024
1025            case com.android.internal.R.styleable.TextView_textColorLink:
1026                textColorLink = a.getColorStateList(attr);
1027                break;
1028
1029            case com.android.internal.R.styleable.TextView_textSize:
1030                textSize = a.getDimensionPixelSize(attr, textSize);
1031                break;
1032
1033            case com.android.internal.R.styleable.TextView_typeface:
1034                typefaceIndex = a.getInt(attr, typefaceIndex);
1035                break;
1036
1037            case com.android.internal.R.styleable.TextView_textStyle:
1038                styleIndex = a.getInt(attr, styleIndex);
1039                break;
1040
1041            case com.android.internal.R.styleable.TextView_fontFamily:
1042                fontFamily = a.getString(attr);
1043                fontFamilyExplicit = true;
1044                break;
1045
1046            case com.android.internal.R.styleable.TextView_password:
1047                password = a.getBoolean(attr, password);
1048                break;
1049
1050            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
1051                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
1052                break;
1053
1054            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
1055                mSpacingMult = a.getFloat(attr, mSpacingMult);
1056                break;
1057
1058            case com.android.internal.R.styleable.TextView_inputType:
1059                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
1060                break;
1061
1062            case com.android.internal.R.styleable.TextView_allowUndo:
1063                createEditorIfNeeded();
1064                mEditor.mAllowUndo = a.getBoolean(attr, true);
1065                break;
1066
1067            case com.android.internal.R.styleable.TextView_imeOptions:
1068                createEditorIfNeeded();
1069                mEditor.createInputContentTypeIfNeeded();
1070                mEditor.mInputContentType.imeOptions = a.getInt(attr,
1071                        mEditor.mInputContentType.imeOptions);
1072                break;
1073
1074            case com.android.internal.R.styleable.TextView_imeActionLabel:
1075                createEditorIfNeeded();
1076                mEditor.createInputContentTypeIfNeeded();
1077                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
1078                break;
1079
1080            case com.android.internal.R.styleable.TextView_imeActionId:
1081                createEditorIfNeeded();
1082                mEditor.createInputContentTypeIfNeeded();
1083                mEditor.mInputContentType.imeActionId = a.getInt(attr,
1084                        mEditor.mInputContentType.imeActionId);
1085                break;
1086
1087            case com.android.internal.R.styleable.TextView_privateImeOptions:
1088                setPrivateImeOptions(a.getString(attr));
1089                break;
1090
1091            case com.android.internal.R.styleable.TextView_editorExtras:
1092                try {
1093                    setInputExtras(a.getResourceId(attr, 0));
1094                } catch (XmlPullParserException e) {
1095                    Log.w(LOG_TAG, "Failure reading input extras", e);
1096                } catch (IOException e) {
1097                    Log.w(LOG_TAG, "Failure reading input extras", e);
1098                }
1099                break;
1100
1101            case com.android.internal.R.styleable.TextView_textCursorDrawable:
1102                mCursorDrawableRes = a.getResourceId(attr, 0);
1103                break;
1104
1105            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
1106                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
1107                break;
1108
1109            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
1110                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
1111                break;
1112
1113            case com.android.internal.R.styleable.TextView_textSelectHandle:
1114                mTextSelectHandleRes = a.getResourceId(attr, 0);
1115                break;
1116
1117            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
1118                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
1119                break;
1120
1121            case com.android.internal.R.styleable.TextView_textIsSelectable:
1122                setTextIsSelectable(a.getBoolean(attr, false));
1123                break;
1124
1125            case com.android.internal.R.styleable.TextView_textAllCaps:
1126                allCaps = a.getBoolean(attr, false);
1127                break;
1128
1129            case com.android.internal.R.styleable.TextView_elegantTextHeight:
1130                elegant = a.getBoolean(attr, false);
1131                break;
1132
1133            case com.android.internal.R.styleable.TextView_letterSpacing:
1134                letterSpacing = a.getFloat(attr, 0);
1135                break;
1136
1137            case com.android.internal.R.styleable.TextView_fontFeatureSettings:
1138                fontFeatureSettings = a.getString(attr);
1139                break;
1140
1141            case com.android.internal.R.styleable.TextView_breakStrategy:
1142                mBreakStrategy = a.getInt(attr, Layout.BREAK_STRATEGY_SIMPLE);
1143            }
1144        }
1145        a.recycle();
1146
1147        BufferType bufferType = BufferType.EDITABLE;
1148
1149        final int variation =
1150                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
1151        final boolean passwordInputType = variation
1152                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
1153        final boolean webPasswordInputType = variation
1154                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
1155        final boolean numberPasswordInputType = variation
1156                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
1157
1158        if (inputMethod != null) {
1159            Class<?> c;
1160
1161            try {
1162                c = Class.forName(inputMethod.toString());
1163            } catch (ClassNotFoundException ex) {
1164                throw new RuntimeException(ex);
1165            }
1166
1167            try {
1168                createEditorIfNeeded();
1169                mEditor.mKeyListener = (KeyListener) c.newInstance();
1170            } catch (InstantiationException ex) {
1171                throw new RuntimeException(ex);
1172            } catch (IllegalAccessException ex) {
1173                throw new RuntimeException(ex);
1174            }
1175            try {
1176                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1177                        ? inputType
1178                        : mEditor.mKeyListener.getInputType();
1179            } catch (IncompatibleClassChangeError e) {
1180                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1181            }
1182        } else if (digits != null) {
1183            createEditorIfNeeded();
1184            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
1185            // If no input type was specified, we will default to generic
1186            // text, since we can't tell the IME about the set of digits
1187            // that was selected.
1188            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1189                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
1190        } else if (inputType != EditorInfo.TYPE_NULL) {
1191            setInputType(inputType, true);
1192            // If set, the input type overrides what was set using the deprecated singleLine flag.
1193            singleLine = !isMultilineInputType(inputType);
1194        } else if (phone) {
1195            createEditorIfNeeded();
1196            mEditor.mKeyListener = DialerKeyListener.getInstance();
1197            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
1198        } else if (numeric != 0) {
1199            createEditorIfNeeded();
1200            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
1201                                                   (numeric & DECIMAL) != 0);
1202            inputType = EditorInfo.TYPE_CLASS_NUMBER;
1203            if ((numeric & SIGNED) != 0) {
1204                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
1205            }
1206            if ((numeric & DECIMAL) != 0) {
1207                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
1208            }
1209            mEditor.mInputType = inputType;
1210        } else if (autotext || autocap != -1) {
1211            TextKeyListener.Capitalize cap;
1212
1213            inputType = EditorInfo.TYPE_CLASS_TEXT;
1214
1215            switch (autocap) {
1216            case 1:
1217                cap = TextKeyListener.Capitalize.SENTENCES;
1218                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
1219                break;
1220
1221            case 2:
1222                cap = TextKeyListener.Capitalize.WORDS;
1223                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
1224                break;
1225
1226            case 3:
1227                cap = TextKeyListener.Capitalize.CHARACTERS;
1228                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
1229                break;
1230
1231            default:
1232                cap = TextKeyListener.Capitalize.NONE;
1233                break;
1234            }
1235
1236            createEditorIfNeeded();
1237            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
1238            mEditor.mInputType = inputType;
1239        } else if (isTextSelectable()) {
1240            // Prevent text changes from keyboard.
1241            if (mEditor != null) {
1242                mEditor.mKeyListener = null;
1243                mEditor.mInputType = EditorInfo.TYPE_NULL;
1244            }
1245            bufferType = BufferType.SPANNABLE;
1246            // So that selection can be changed using arrow keys and touch is handled.
1247            setMovementMethod(ArrowKeyMovementMethod.getInstance());
1248        } else if (editable) {
1249            createEditorIfNeeded();
1250            mEditor.mKeyListener = TextKeyListener.getInstance();
1251            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1252        } else {
1253            if (mEditor != null) mEditor.mKeyListener = null;
1254
1255            switch (buffertype) {
1256                case 0:
1257                    bufferType = BufferType.NORMAL;
1258                    break;
1259                case 1:
1260                    bufferType = BufferType.SPANNABLE;
1261                    break;
1262                case 2:
1263                    bufferType = BufferType.EDITABLE;
1264                    break;
1265            }
1266        }
1267
1268        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
1269                webPasswordInputType, numberPasswordInputType);
1270
1271        if (selectallonfocus) {
1272            createEditorIfNeeded();
1273            mEditor.mSelectAllOnFocus = true;
1274
1275            if (bufferType == BufferType.NORMAL)
1276                bufferType = BufferType.SPANNABLE;
1277        }
1278
1279        // Set up the tint (if needed) before setting the drawables so that it
1280        // gets applied correctly.
1281        if (drawableTint != null || drawableTintMode != null) {
1282            if (mDrawables == null) {
1283                mDrawables = new Drawables(context);
1284            }
1285            if (drawableTint != null) {
1286                mDrawables.mTintList = drawableTint;
1287                mDrawables.mHasTint = true;
1288            }
1289            if (drawableTintMode != null) {
1290                mDrawables.mTintMode = drawableTintMode;
1291                mDrawables.mHasTintMode = true;
1292            }
1293        }
1294
1295        // This call will save the initial left/right drawables
1296        setCompoundDrawablesWithIntrinsicBounds(
1297            drawableLeft, drawableTop, drawableRight, drawableBottom);
1298        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1299        setCompoundDrawablePadding(drawablePadding);
1300
1301        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1302        // of lines of height are unchanged for multi-line TextViews.
1303        setInputTypeSingleLine(singleLine);
1304        applySingleLine(singleLine, singleLine, singleLine);
1305
1306        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1307                ellipsize = 3; // END
1308        }
1309
1310        switch (ellipsize) {
1311            case 1:
1312                setEllipsize(TextUtils.TruncateAt.START);
1313                break;
1314            case 2:
1315                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1316                break;
1317            case 3:
1318                setEllipsize(TextUtils.TruncateAt.END);
1319                break;
1320            case 4:
1321                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1322                    setHorizontalFadingEdgeEnabled(true);
1323                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1324                } else {
1325                    setHorizontalFadingEdgeEnabled(false);
1326                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1327                }
1328                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1329                break;
1330        }
1331
1332        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1333        setHintTextColor(textColorHint);
1334        setLinkTextColor(textColorLink);
1335        if (textColorHighlight != 0) {
1336            setHighlightColor(textColorHighlight);
1337        }
1338        setRawTextSize(textSize);
1339        setElegantTextHeight(elegant);
1340        setLetterSpacing(letterSpacing);
1341        setFontFeatureSettings(fontFeatureSettings);
1342
1343        if (allCaps) {
1344            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1345        }
1346
1347        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1348            setTransformationMethod(PasswordTransformationMethod.getInstance());
1349            typefaceIndex = MONOSPACE;
1350        } else if (mEditor != null &&
1351                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1352                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1353            typefaceIndex = MONOSPACE;
1354        }
1355
1356        if (typefaceIndex != -1 && !fontFamilyExplicit) {
1357            fontFamily = null;
1358        }
1359        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1360
1361        if (shadowcolor != 0) {
1362            setShadowLayer(r, dx, dy, shadowcolor);
1363        }
1364
1365        if (maxlength >= 0) {
1366            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1367        } else {
1368            setFilters(NO_FILTERS);
1369        }
1370
1371        setText(text, bufferType);
1372        if (hint != null) setHint(hint);
1373
1374        /*
1375         * Views are not normally focusable unless specified to be.
1376         * However, TextViews that have input or movement methods *are*
1377         * focusable by default.
1378         */
1379        a = context.obtainStyledAttributes(
1380                attrs, com.android.internal.R.styleable.View, defStyleAttr, defStyleRes);
1381
1382        boolean focusable = mMovement != null || getKeyListener() != null;
1383        boolean clickable = focusable || isClickable();
1384        boolean longClickable = focusable || isLongClickable();
1385
1386        n = a.getIndexCount();
1387        for (int i = 0; i < n; i++) {
1388            int attr = a.getIndex(i);
1389
1390            switch (attr) {
1391            case com.android.internal.R.styleable.View_focusable:
1392                focusable = a.getBoolean(attr, focusable);
1393                break;
1394
1395            case com.android.internal.R.styleable.View_clickable:
1396                clickable = a.getBoolean(attr, clickable);
1397                break;
1398
1399            case com.android.internal.R.styleable.View_longClickable:
1400                longClickable = a.getBoolean(attr, longClickable);
1401                break;
1402            }
1403        }
1404        a.recycle();
1405
1406        setFocusable(focusable);
1407        setClickable(clickable);
1408        setLongClickable(longClickable);
1409
1410        if (mEditor != null) mEditor.prepareCursorControllers();
1411
1412        // If not explicitly specified this view is important for accessibility.
1413        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1414            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1415        }
1416    }
1417
1418    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1419        Typeface tf = null;
1420        if (familyName != null) {
1421            tf = Typeface.create(familyName, styleIndex);
1422            if (tf != null) {
1423                setTypeface(tf);
1424                return;
1425            }
1426        }
1427        switch (typefaceIndex) {
1428            case SANS:
1429                tf = Typeface.SANS_SERIF;
1430                break;
1431
1432            case SERIF:
1433                tf = Typeface.SERIF;
1434                break;
1435
1436            case MONOSPACE:
1437                tf = Typeface.MONOSPACE;
1438                break;
1439        }
1440
1441        setTypeface(tf, styleIndex);
1442    }
1443
1444    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1445        boolean hasRelativeDrawables = (start != null) || (end != null);
1446        if (hasRelativeDrawables) {
1447            Drawables dr = mDrawables;
1448            if (dr == null) {
1449                mDrawables = dr = new Drawables(getContext());
1450            }
1451            mDrawables.mOverride = true;
1452            final Rect compoundRect = dr.mCompoundRect;
1453            int[] state = getDrawableState();
1454            if (start != null) {
1455                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1456                start.setState(state);
1457                start.copyBounds(compoundRect);
1458                start.setCallback(this);
1459
1460                dr.mDrawableStart = start;
1461                dr.mDrawableSizeStart = compoundRect.width();
1462                dr.mDrawableHeightStart = compoundRect.height();
1463            } else {
1464                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1465            }
1466            if (end != null) {
1467                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1468                end.setState(state);
1469                end.copyBounds(compoundRect);
1470                end.setCallback(this);
1471
1472                dr.mDrawableEnd = end;
1473                dr.mDrawableSizeEnd = compoundRect.width();
1474                dr.mDrawableHeightEnd = compoundRect.height();
1475            } else {
1476                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1477            }
1478            resetResolvedDrawables();
1479            resolveDrawables();
1480            applyCompoundDrawableTint();
1481        }
1482    }
1483
1484    @Override
1485    public void setEnabled(boolean enabled) {
1486        if (enabled == isEnabled()) {
1487            return;
1488        }
1489
1490        if (!enabled) {
1491            // Hide the soft input if the currently active TextView is disabled
1492            InputMethodManager imm = InputMethodManager.peekInstance();
1493            if (imm != null && imm.isActive(this)) {
1494                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1495            }
1496        }
1497
1498        super.setEnabled(enabled);
1499
1500        if (enabled) {
1501            // Make sure IME is updated with current editor info.
1502            InputMethodManager imm = InputMethodManager.peekInstance();
1503            if (imm != null) imm.restartInput(this);
1504        }
1505
1506        // Will change text color
1507        if (mEditor != null) {
1508            mEditor.invalidateTextDisplayList();
1509            mEditor.prepareCursorControllers();
1510
1511            // start or stop the cursor blinking as appropriate
1512            mEditor.makeBlink();
1513        }
1514    }
1515
1516    /**
1517     * Sets the typeface and style in which the text should be displayed,
1518     * and turns on the fake bold and italic bits in the Paint if the
1519     * Typeface that you provided does not have all the bits in the
1520     * style that you specified.
1521     *
1522     * @attr ref android.R.styleable#TextView_typeface
1523     * @attr ref android.R.styleable#TextView_textStyle
1524     */
1525    public void setTypeface(Typeface tf, int style) {
1526        if (style > 0) {
1527            if (tf == null) {
1528                tf = Typeface.defaultFromStyle(style);
1529            } else {
1530                tf = Typeface.create(tf, style);
1531            }
1532
1533            setTypeface(tf);
1534            // now compute what (if any) algorithmic styling is needed
1535            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1536            int need = style & ~typefaceStyle;
1537            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1538            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1539        } else {
1540            mTextPaint.setFakeBoldText(false);
1541            mTextPaint.setTextSkewX(0);
1542            setTypeface(tf);
1543        }
1544    }
1545
1546    /**
1547     * Subclasses override this to specify that they have a KeyListener
1548     * by default even if not specifically called for in the XML options.
1549     */
1550    protected boolean getDefaultEditable() {
1551        return false;
1552    }
1553
1554    /**
1555     * Subclasses override this to specify a default movement method.
1556     */
1557    protected MovementMethod getDefaultMovementMethod() {
1558        return null;
1559    }
1560
1561    /**
1562     * Return the text the TextView is displaying. If setText() was called with
1563     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1564     * the return value from this method to Spannable or Editable, respectively.
1565     *
1566     * Note: The content of the return value should not be modified. If you want
1567     * a modifiable one, you should make your own copy first.
1568     *
1569     * @attr ref android.R.styleable#TextView_text
1570     */
1571    @ViewDebug.CapturedViewProperty
1572    public CharSequence getText() {
1573        return mText;
1574    }
1575
1576    /**
1577     * Returns the length, in characters, of the text managed by this TextView
1578     */
1579    public int length() {
1580        return mText.length();
1581    }
1582
1583    /**
1584     * Return the text the TextView is displaying as an Editable object.  If
1585     * the text is not editable, null is returned.
1586     *
1587     * @see #getText
1588     */
1589    public Editable getEditableText() {
1590        return (mText instanceof Editable) ? (Editable)mText : null;
1591    }
1592
1593    /**
1594     * @return the height of one standard line in pixels.  Note that markup
1595     * within the text can cause individual lines to be taller or shorter
1596     * than this height, and the layout may contain additional first-
1597     * or last-line padding.
1598     */
1599    public int getLineHeight() {
1600        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1601    }
1602
1603    /**
1604     * @return the Layout that is currently being used to display the text.
1605     * This can be null if the text or width has recently changes.
1606     */
1607    public final Layout getLayout() {
1608        return mLayout;
1609    }
1610
1611    /**
1612     * @return the Layout that is currently being used to display the hint text.
1613     * This can be null.
1614     */
1615    final Layout getHintLayout() {
1616        return mHintLayout;
1617    }
1618
1619    /**
1620     * Retrieve the {@link android.content.UndoManager} that is currently associated
1621     * with this TextView.  By default there is no associated UndoManager, so null
1622     * is returned.  One can be associated with the TextView through
1623     * {@link #setUndoManager(android.content.UndoManager, String)}
1624     *
1625     * @hide
1626     */
1627    public final UndoManager getUndoManager() {
1628        // TODO: Consider supporting a global undo manager.
1629        throw new UnsupportedOperationException("not implemented");
1630    }
1631
1632    /**
1633     * Associate an {@link android.content.UndoManager} with this TextView.  Once
1634     * done, all edit operations on the TextView will result in appropriate
1635     * {@link android.content.UndoOperation} objects pushed on the given UndoManager's
1636     * stack.
1637     *
1638     * @param undoManager The {@link android.content.UndoManager} to associate with
1639     * this TextView, or null to clear any existing association.
1640     * @param tag String tag identifying this particular TextView owner in the
1641     * UndoManager.  This is used to keep the correct association with the
1642     * {@link android.content.UndoOwner} of any operations inside of the UndoManager.
1643     *
1644     * @hide
1645     */
1646    public final void setUndoManager(UndoManager undoManager, String tag) {
1647        // TODO: Consider supporting a global undo manager. An implementation will need to:
1648        // * createEditorIfNeeded()
1649        // * Promote to BufferType.EDITABLE if needed.
1650        // * Update the UndoManager and UndoOwner.
1651        // Likewise it will need to be able to restore the default UndoManager.
1652        throw new UnsupportedOperationException("not implemented");
1653    }
1654
1655    /**
1656     * @return the current key listener for this TextView.
1657     * This will frequently be null for non-EditText TextViews.
1658     *
1659     * @attr ref android.R.styleable#TextView_numeric
1660     * @attr ref android.R.styleable#TextView_digits
1661     * @attr ref android.R.styleable#TextView_phoneNumber
1662     * @attr ref android.R.styleable#TextView_inputMethod
1663     * @attr ref android.R.styleable#TextView_capitalize
1664     * @attr ref android.R.styleable#TextView_autoText
1665     */
1666    public final KeyListener getKeyListener() {
1667        return mEditor == null ? null : mEditor.mKeyListener;
1668    }
1669
1670    /**
1671     * Sets the key listener to be used with this TextView.  This can be null
1672     * to disallow user input.  Note that this method has significant and
1673     * subtle interactions with soft keyboards and other input method:
1674     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1675     * for important details.  Calling this method will replace the current
1676     * content type of the text view with the content type returned by the
1677     * key listener.
1678     * <p>
1679     * Be warned that if you want a TextView with a key listener or movement
1680     * method not to be focusable, or if you want a TextView without a
1681     * key listener or movement method to be focusable, you must call
1682     * {@link #setFocusable} again after calling this to get the focusability
1683     * back the way you want it.
1684     *
1685     * @attr ref android.R.styleable#TextView_numeric
1686     * @attr ref android.R.styleable#TextView_digits
1687     * @attr ref android.R.styleable#TextView_phoneNumber
1688     * @attr ref android.R.styleable#TextView_inputMethod
1689     * @attr ref android.R.styleable#TextView_capitalize
1690     * @attr ref android.R.styleable#TextView_autoText
1691     */
1692    public void setKeyListener(KeyListener input) {
1693        setKeyListenerOnly(input);
1694        fixFocusableAndClickableSettings();
1695
1696        if (input != null) {
1697            createEditorIfNeeded();
1698            try {
1699                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1700            } catch (IncompatibleClassChangeError e) {
1701                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1702            }
1703            // Change inputType, without affecting transformation.
1704            // No need to applySingleLine since mSingleLine is unchanged.
1705            setInputTypeSingleLine(mSingleLine);
1706        } else {
1707            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1708        }
1709
1710        InputMethodManager imm = InputMethodManager.peekInstance();
1711        if (imm != null) imm.restartInput(this);
1712    }
1713
1714    private void setKeyListenerOnly(KeyListener input) {
1715        if (mEditor == null && input == null) return; // null is the default value
1716
1717        createEditorIfNeeded();
1718        if (mEditor.mKeyListener != input) {
1719            mEditor.mKeyListener = input;
1720            if (input != null && !(mText instanceof Editable)) {
1721                setText(mText);
1722            }
1723
1724            setFilters((Editable) mText, mFilters);
1725        }
1726    }
1727
1728    /**
1729     * @return the movement method being used for this TextView.
1730     * This will frequently be null for non-EditText TextViews.
1731     */
1732    public final MovementMethod getMovementMethod() {
1733        return mMovement;
1734    }
1735
1736    /**
1737     * Sets the movement method (arrow key handler) to be used for
1738     * this TextView.  This can be null to disallow using the arrow keys
1739     * to move the cursor or scroll the view.
1740     * <p>
1741     * Be warned that if you want a TextView with a key listener or movement
1742     * method not to be focusable, or if you want a TextView without a
1743     * key listener or movement method to be focusable, you must call
1744     * {@link #setFocusable} again after calling this to get the focusability
1745     * back the way you want it.
1746     */
1747    public final void setMovementMethod(MovementMethod movement) {
1748        if (mMovement != movement) {
1749            mMovement = movement;
1750
1751            if (movement != null && !(mText instanceof Spannable)) {
1752                setText(mText);
1753            }
1754
1755            fixFocusableAndClickableSettings();
1756
1757            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1758            // mMovement
1759            if (mEditor != null) mEditor.prepareCursorControllers();
1760        }
1761    }
1762
1763    private void fixFocusableAndClickableSettings() {
1764        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1765            setFocusable(true);
1766            setClickable(true);
1767            setLongClickable(true);
1768        } else {
1769            setFocusable(false);
1770            setClickable(false);
1771            setLongClickable(false);
1772        }
1773    }
1774
1775    /**
1776     * @return the current transformation method for this TextView.
1777     * This will frequently be null except for single-line and password
1778     * fields.
1779     *
1780     * @attr ref android.R.styleable#TextView_password
1781     * @attr ref android.R.styleable#TextView_singleLine
1782     */
1783    public final TransformationMethod getTransformationMethod() {
1784        return mTransformation;
1785    }
1786
1787    /**
1788     * Sets the transformation that is applied to the text that this
1789     * TextView is displaying.
1790     *
1791     * @attr ref android.R.styleable#TextView_password
1792     * @attr ref android.R.styleable#TextView_singleLine
1793     */
1794    public final void setTransformationMethod(TransformationMethod method) {
1795        if (method == mTransformation) {
1796            // Avoid the setText() below if the transformation is
1797            // the same.
1798            return;
1799        }
1800        if (mTransformation != null) {
1801            if (mText instanceof Spannable) {
1802                ((Spannable) mText).removeSpan(mTransformation);
1803            }
1804        }
1805
1806        mTransformation = method;
1807
1808        if (method instanceof TransformationMethod2) {
1809            TransformationMethod2 method2 = (TransformationMethod2) method;
1810            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1811            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1812        } else {
1813            mAllowTransformationLengthChange = false;
1814        }
1815
1816        setText(mText);
1817
1818        if (hasPasswordTransformationMethod()) {
1819            notifyViewAccessibilityStateChangedIfNeeded(
1820                    AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
1821        }
1822    }
1823
1824    /**
1825     * Returns the top padding of the view, plus space for the top
1826     * Drawable if any.
1827     */
1828    public int getCompoundPaddingTop() {
1829        final Drawables dr = mDrawables;
1830        if (dr == null || dr.mShowing[Drawables.TOP] == null) {
1831            return mPaddingTop;
1832        } else {
1833            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1834        }
1835    }
1836
1837    /**
1838     * Returns the bottom padding of the view, plus space for the bottom
1839     * Drawable if any.
1840     */
1841    public int getCompoundPaddingBottom() {
1842        final Drawables dr = mDrawables;
1843        if (dr == null || dr.mShowing[Drawables.BOTTOM] == null) {
1844            return mPaddingBottom;
1845        } else {
1846            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1847        }
1848    }
1849
1850    /**
1851     * Returns the left padding of the view, plus space for the left
1852     * Drawable if any.
1853     */
1854    public int getCompoundPaddingLeft() {
1855        final Drawables dr = mDrawables;
1856        if (dr == null || dr.mShowing[Drawables.LEFT] == null) {
1857            return mPaddingLeft;
1858        } else {
1859            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1860        }
1861    }
1862
1863    /**
1864     * Returns the right padding of the view, plus space for the right
1865     * Drawable if any.
1866     */
1867    public int getCompoundPaddingRight() {
1868        final Drawables dr = mDrawables;
1869        if (dr == null || dr.mShowing[Drawables.RIGHT] == null) {
1870            return mPaddingRight;
1871        } else {
1872            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1873        }
1874    }
1875
1876    /**
1877     * Returns the start padding of the view, plus space for the start
1878     * Drawable if any.
1879     */
1880    public int getCompoundPaddingStart() {
1881        resolveDrawables();
1882        switch(getLayoutDirection()) {
1883            default:
1884            case LAYOUT_DIRECTION_LTR:
1885                return getCompoundPaddingLeft();
1886            case LAYOUT_DIRECTION_RTL:
1887                return getCompoundPaddingRight();
1888        }
1889    }
1890
1891    /**
1892     * Returns the end padding of the view, plus space for the end
1893     * Drawable if any.
1894     */
1895    public int getCompoundPaddingEnd() {
1896        resolveDrawables();
1897        switch(getLayoutDirection()) {
1898            default:
1899            case LAYOUT_DIRECTION_LTR:
1900                return getCompoundPaddingRight();
1901            case LAYOUT_DIRECTION_RTL:
1902                return getCompoundPaddingLeft();
1903        }
1904    }
1905
1906    /**
1907     * Returns the extended top padding of the view, including both the
1908     * top Drawable if any and any extra space to keep more than maxLines
1909     * of text from showing.  It is only valid to call this after measuring.
1910     */
1911    public int getExtendedPaddingTop() {
1912        if (mMaxMode != LINES) {
1913            return getCompoundPaddingTop();
1914        }
1915
1916        if (mLayout == null) {
1917            assumeLayout();
1918        }
1919
1920        if (mLayout.getLineCount() <= mMaximum) {
1921            return getCompoundPaddingTop();
1922        }
1923
1924        int top = getCompoundPaddingTop();
1925        int bottom = getCompoundPaddingBottom();
1926        int viewht = getHeight() - top - bottom;
1927        int layoutht = mLayout.getLineTop(mMaximum);
1928
1929        if (layoutht >= viewht) {
1930            return top;
1931        }
1932
1933        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1934        if (gravity == Gravity.TOP) {
1935            return top;
1936        } else if (gravity == Gravity.BOTTOM) {
1937            return top + viewht - layoutht;
1938        } else { // (gravity == Gravity.CENTER_VERTICAL)
1939            return top + (viewht - layoutht) / 2;
1940        }
1941    }
1942
1943    /**
1944     * Returns the extended bottom padding of the view, including both the
1945     * bottom Drawable if any and any extra space to keep more than maxLines
1946     * of text from showing.  It is only valid to call this after measuring.
1947     */
1948    public int getExtendedPaddingBottom() {
1949        if (mMaxMode != LINES) {
1950            return getCompoundPaddingBottom();
1951        }
1952
1953        if (mLayout == null) {
1954            assumeLayout();
1955        }
1956
1957        if (mLayout.getLineCount() <= mMaximum) {
1958            return getCompoundPaddingBottom();
1959        }
1960
1961        int top = getCompoundPaddingTop();
1962        int bottom = getCompoundPaddingBottom();
1963        int viewht = getHeight() - top - bottom;
1964        int layoutht = mLayout.getLineTop(mMaximum);
1965
1966        if (layoutht >= viewht) {
1967            return bottom;
1968        }
1969
1970        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1971        if (gravity == Gravity.TOP) {
1972            return bottom + viewht - layoutht;
1973        } else if (gravity == Gravity.BOTTOM) {
1974            return bottom;
1975        } else { // (gravity == Gravity.CENTER_VERTICAL)
1976            return bottom + (viewht - layoutht) / 2;
1977        }
1978    }
1979
1980    /**
1981     * Returns the total left padding of the view, including the left
1982     * Drawable if any.
1983     */
1984    public int getTotalPaddingLeft() {
1985        return getCompoundPaddingLeft();
1986    }
1987
1988    /**
1989     * Returns the total right padding of the view, including the right
1990     * Drawable if any.
1991     */
1992    public int getTotalPaddingRight() {
1993        return getCompoundPaddingRight();
1994    }
1995
1996    /**
1997     * Returns the total start padding of the view, including the start
1998     * Drawable if any.
1999     */
2000    public int getTotalPaddingStart() {
2001        return getCompoundPaddingStart();
2002    }
2003
2004    /**
2005     * Returns the total end padding of the view, including the end
2006     * Drawable if any.
2007     */
2008    public int getTotalPaddingEnd() {
2009        return getCompoundPaddingEnd();
2010    }
2011
2012    /**
2013     * Returns the total top padding of the view, including the top
2014     * Drawable if any, the extra space to keep more than maxLines
2015     * from showing, and the vertical offset for gravity, if any.
2016     */
2017    public int getTotalPaddingTop() {
2018        return getExtendedPaddingTop() + getVerticalOffset(true);
2019    }
2020
2021    /**
2022     * Returns the total bottom padding of the view, including the bottom
2023     * Drawable if any, the extra space to keep more than maxLines
2024     * from showing, and the vertical offset for gravity, if any.
2025     */
2026    public int getTotalPaddingBottom() {
2027        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
2028    }
2029
2030    /**
2031     * Sets the Drawables (if any) to appear to the left of, above, to the
2032     * right of, and below the text. Use {@code null} if you do not want a
2033     * Drawable there. The Drawables must already have had
2034     * {@link Drawable#setBounds} called.
2035     * <p>
2036     * Calling this method will overwrite any Drawables previously set using
2037     * {@link #setCompoundDrawablesRelative} or related methods.
2038     *
2039     * @attr ref android.R.styleable#TextView_drawableLeft
2040     * @attr ref android.R.styleable#TextView_drawableTop
2041     * @attr ref android.R.styleable#TextView_drawableRight
2042     * @attr ref android.R.styleable#TextView_drawableBottom
2043     */
2044    public void setCompoundDrawables(@Nullable Drawable left, @Nullable Drawable top,
2045            @Nullable Drawable right, @Nullable Drawable bottom) {
2046        Drawables dr = mDrawables;
2047
2048        // We're switching to absolute, discard relative.
2049        if (dr != null) {
2050            if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2051            dr.mDrawableStart = null;
2052            if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2053            dr.mDrawableEnd = null;
2054            dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2055            dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2056        }
2057
2058        final boolean drawables = left != null || top != null || right != null || bottom != null;
2059        if (!drawables) {
2060            // Clearing drawables...  can we free the data structure?
2061            if (dr != null) {
2062                if (dr.mDrawablePadding == 0) {
2063                    mDrawables = null;
2064                } else {
2065                    // We need to retain the last set padding, so just clear
2066                    // out all of the fields in the existing structure.
2067                    for (int i = dr.mShowing.length - 1; i >= 0; i--) {
2068                        if (dr.mShowing[i] != null) {
2069                            dr.mShowing[i].setCallback(null);
2070                        }
2071                        dr.mShowing[i] = null;
2072                    }
2073                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2074                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2075                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2076                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2077                }
2078            }
2079        } else {
2080            if (dr == null) {
2081                mDrawables = dr = new Drawables(getContext());
2082            }
2083
2084            mDrawables.mOverride = false;
2085
2086            if (dr.mShowing[Drawables.LEFT] != left && dr.mShowing[Drawables.LEFT] != null) {
2087                dr.mShowing[Drawables.LEFT].setCallback(null);
2088            }
2089            dr.mShowing[Drawables.LEFT] = left;
2090
2091            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2092                dr.mShowing[Drawables.TOP].setCallback(null);
2093            }
2094            dr.mShowing[Drawables.TOP] = top;
2095
2096            if (dr.mShowing[Drawables.RIGHT] != right && dr.mShowing[Drawables.RIGHT] != null) {
2097                dr.mShowing[Drawables.RIGHT].setCallback(null);
2098            }
2099            dr.mShowing[Drawables.RIGHT] = right;
2100
2101            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2102                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2103            }
2104            dr.mShowing[Drawables.BOTTOM] = bottom;
2105
2106            final Rect compoundRect = dr.mCompoundRect;
2107            int[] state;
2108
2109            state = getDrawableState();
2110
2111            if (left != null) {
2112                left.setState(state);
2113                left.copyBounds(compoundRect);
2114                left.setCallback(this);
2115                dr.mDrawableSizeLeft = compoundRect.width();
2116                dr.mDrawableHeightLeft = compoundRect.height();
2117            } else {
2118                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2119            }
2120
2121            if (right != null) {
2122                right.setState(state);
2123                right.copyBounds(compoundRect);
2124                right.setCallback(this);
2125                dr.mDrawableSizeRight = compoundRect.width();
2126                dr.mDrawableHeightRight = compoundRect.height();
2127            } else {
2128                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2129            }
2130
2131            if (top != null) {
2132                top.setState(state);
2133                top.copyBounds(compoundRect);
2134                top.setCallback(this);
2135                dr.mDrawableSizeTop = compoundRect.height();
2136                dr.mDrawableWidthTop = compoundRect.width();
2137            } else {
2138                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2139            }
2140
2141            if (bottom != null) {
2142                bottom.setState(state);
2143                bottom.copyBounds(compoundRect);
2144                bottom.setCallback(this);
2145                dr.mDrawableSizeBottom = compoundRect.height();
2146                dr.mDrawableWidthBottom = compoundRect.width();
2147            } else {
2148                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2149            }
2150        }
2151
2152        // Save initial left/right drawables
2153        if (dr != null) {
2154            dr.mDrawableLeftInitial = left;
2155            dr.mDrawableRightInitial = right;
2156        }
2157
2158        resetResolvedDrawables();
2159        resolveDrawables();
2160        applyCompoundDrawableTint();
2161        invalidate();
2162        requestLayout();
2163    }
2164
2165    /**
2166     * Sets the Drawables (if any) to appear to the left of, above, to the
2167     * right of, and below the text. Use 0 if you do not want a Drawable there.
2168     * The Drawables' bounds will be set to their intrinsic bounds.
2169     * <p>
2170     * Calling this method will overwrite any Drawables previously set using
2171     * {@link #setCompoundDrawablesRelative} or related methods.
2172     *
2173     * @param left Resource identifier of the left Drawable.
2174     * @param top Resource identifier of the top Drawable.
2175     * @param right Resource identifier of the right Drawable.
2176     * @param bottom Resource identifier of the bottom Drawable.
2177     *
2178     * @attr ref android.R.styleable#TextView_drawableLeft
2179     * @attr ref android.R.styleable#TextView_drawableTop
2180     * @attr ref android.R.styleable#TextView_drawableRight
2181     * @attr ref android.R.styleable#TextView_drawableBottom
2182     */
2183    @android.view.RemotableViewMethod
2184    public void setCompoundDrawablesWithIntrinsicBounds(@DrawableRes int left,
2185            @DrawableRes int top, @DrawableRes int right, @DrawableRes int bottom) {
2186        final Context context = getContext();
2187        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? context.getDrawable(left) : null,
2188                top != 0 ? context.getDrawable(top) : null,
2189                right != 0 ? context.getDrawable(right) : null,
2190                bottom != 0 ? context.getDrawable(bottom) : null);
2191    }
2192
2193    /**
2194     * Sets the Drawables (if any) to appear to the left of, above, to the
2195     * right of, and below the text. Use {@code null} if you do not want a
2196     * Drawable there. The Drawables' bounds will be set to their intrinsic
2197     * bounds.
2198     * <p>
2199     * Calling this method will overwrite any Drawables previously set using
2200     * {@link #setCompoundDrawablesRelative} or related methods.
2201     *
2202     * @attr ref android.R.styleable#TextView_drawableLeft
2203     * @attr ref android.R.styleable#TextView_drawableTop
2204     * @attr ref android.R.styleable#TextView_drawableRight
2205     * @attr ref android.R.styleable#TextView_drawableBottom
2206     */
2207    public void setCompoundDrawablesWithIntrinsicBounds(@Nullable Drawable left,
2208            @Nullable Drawable top, @Nullable Drawable right, @Nullable Drawable bottom) {
2209
2210        if (left != null) {
2211            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
2212        }
2213        if (right != null) {
2214            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
2215        }
2216        if (top != null) {
2217            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2218        }
2219        if (bottom != null) {
2220            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2221        }
2222        setCompoundDrawables(left, top, right, bottom);
2223    }
2224
2225    /**
2226     * Sets the Drawables (if any) to appear to the start of, above, to the end
2227     * of, and below the text. Use {@code null} if you do not want a Drawable
2228     * there. The Drawables must already have had {@link Drawable#setBounds}
2229     * called.
2230     * <p>
2231     * Calling this method will overwrite any Drawables previously set using
2232     * {@link #setCompoundDrawables} or related methods.
2233     *
2234     * @attr ref android.R.styleable#TextView_drawableStart
2235     * @attr ref android.R.styleable#TextView_drawableTop
2236     * @attr ref android.R.styleable#TextView_drawableEnd
2237     * @attr ref android.R.styleable#TextView_drawableBottom
2238     */
2239    public void setCompoundDrawablesRelative(@Nullable Drawable start, @Nullable Drawable top,
2240            @Nullable Drawable end, @Nullable Drawable bottom) {
2241        Drawables dr = mDrawables;
2242
2243        // We're switching to relative, discard absolute.
2244        if (dr != null) {
2245            if (dr.mShowing[Drawables.LEFT] != null) {
2246                dr.mShowing[Drawables.LEFT].setCallback(null);
2247            }
2248            dr.mShowing[Drawables.LEFT] = dr.mDrawableLeftInitial = null;
2249            if (dr.mShowing[Drawables.RIGHT] != null) {
2250                dr.mShowing[Drawables.RIGHT].setCallback(null);
2251            }
2252            dr.mShowing[Drawables.RIGHT] = dr.mDrawableRightInitial = null;
2253            dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2254            dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2255        }
2256
2257        final boolean drawables = start != null || top != null
2258                || end != null || bottom != null;
2259
2260        if (!drawables) {
2261            // Clearing drawables...  can we free the data structure?
2262            if (dr != null) {
2263                if (dr.mDrawablePadding == 0) {
2264                    mDrawables = null;
2265                } else {
2266                    // We need to retain the last set padding, so just clear
2267                    // out all of the fields in the existing structure.
2268                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2269                    dr.mDrawableStart = null;
2270                    if (dr.mShowing[Drawables.TOP] != null) {
2271                        dr.mShowing[Drawables.TOP].setCallback(null);
2272                    }
2273                    dr.mShowing[Drawables.TOP] = null;
2274                    if (dr.mDrawableEnd != null) {
2275                        dr.mDrawableEnd.setCallback(null);
2276                    }
2277                    dr.mDrawableEnd = null;
2278                    if (dr.mShowing[Drawables.BOTTOM] != null) {
2279                        dr.mShowing[Drawables.BOTTOM].setCallback(null);
2280                    }
2281                    dr.mShowing[Drawables.BOTTOM] = null;
2282                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2283                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2284                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2285                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2286                }
2287            }
2288        } else {
2289            if (dr == null) {
2290                mDrawables = dr = new Drawables(getContext());
2291            }
2292
2293            mDrawables.mOverride = true;
2294
2295            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
2296                dr.mDrawableStart.setCallback(null);
2297            }
2298            dr.mDrawableStart = start;
2299
2300            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2301                dr.mShowing[Drawables.TOP].setCallback(null);
2302            }
2303            dr.mShowing[Drawables.TOP] = top;
2304
2305            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
2306                dr.mDrawableEnd.setCallback(null);
2307            }
2308            dr.mDrawableEnd = end;
2309
2310            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2311                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2312            }
2313            dr.mShowing[Drawables.BOTTOM] = bottom;
2314
2315            final Rect compoundRect = dr.mCompoundRect;
2316            int[] state;
2317
2318            state = getDrawableState();
2319
2320            if (start != null) {
2321                start.setState(state);
2322                start.copyBounds(compoundRect);
2323                start.setCallback(this);
2324                dr.mDrawableSizeStart = compoundRect.width();
2325                dr.mDrawableHeightStart = compoundRect.height();
2326            } else {
2327                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2328            }
2329
2330            if (end != null) {
2331                end.setState(state);
2332                end.copyBounds(compoundRect);
2333                end.setCallback(this);
2334                dr.mDrawableSizeEnd = compoundRect.width();
2335                dr.mDrawableHeightEnd = compoundRect.height();
2336            } else {
2337                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2338            }
2339
2340            if (top != null) {
2341                top.setState(state);
2342                top.copyBounds(compoundRect);
2343                top.setCallback(this);
2344                dr.mDrawableSizeTop = compoundRect.height();
2345                dr.mDrawableWidthTop = compoundRect.width();
2346            } else {
2347                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2348            }
2349
2350            if (bottom != null) {
2351                bottom.setState(state);
2352                bottom.copyBounds(compoundRect);
2353                bottom.setCallback(this);
2354                dr.mDrawableSizeBottom = compoundRect.height();
2355                dr.mDrawableWidthBottom = compoundRect.width();
2356            } else {
2357                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2358            }
2359        }
2360
2361        resetResolvedDrawables();
2362        resolveDrawables();
2363        invalidate();
2364        requestLayout();
2365    }
2366
2367    /**
2368     * Sets the Drawables (if any) to appear to the start of, above, to the end
2369     * of, and below the text. Use 0 if you do not want a Drawable there. The
2370     * Drawables' bounds will be set to their intrinsic bounds.
2371     * <p>
2372     * Calling this method will overwrite any Drawables previously set using
2373     * {@link #setCompoundDrawables} or related methods.
2374     *
2375     * @param start Resource identifier of the start Drawable.
2376     * @param top Resource identifier of the top Drawable.
2377     * @param end Resource identifier of the end Drawable.
2378     * @param bottom Resource identifier of the bottom Drawable.
2379     *
2380     * @attr ref android.R.styleable#TextView_drawableStart
2381     * @attr ref android.R.styleable#TextView_drawableTop
2382     * @attr ref android.R.styleable#TextView_drawableEnd
2383     * @attr ref android.R.styleable#TextView_drawableBottom
2384     */
2385    @android.view.RemotableViewMethod
2386    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@DrawableRes int start,
2387            @DrawableRes int top, @DrawableRes int end, @DrawableRes int bottom) {
2388        final Context context = getContext();
2389        setCompoundDrawablesRelativeWithIntrinsicBounds(
2390                start != 0 ? context.getDrawable(start) : null,
2391                top != 0 ? context.getDrawable(top) : null,
2392                end != 0 ? context.getDrawable(end) : null,
2393                bottom != 0 ? context.getDrawable(bottom) : null);
2394    }
2395
2396    /**
2397     * Sets the Drawables (if any) to appear to the start of, above, to the end
2398     * of, and below the text. Use {@code null} if you do not want a Drawable
2399     * there. The Drawables' bounds will be set to their intrinsic bounds.
2400     * <p>
2401     * Calling this method will overwrite any Drawables previously set using
2402     * {@link #setCompoundDrawables} or related methods.
2403     *
2404     * @attr ref android.R.styleable#TextView_drawableStart
2405     * @attr ref android.R.styleable#TextView_drawableTop
2406     * @attr ref android.R.styleable#TextView_drawableEnd
2407     * @attr ref android.R.styleable#TextView_drawableBottom
2408     */
2409    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@Nullable Drawable start,
2410            @Nullable Drawable top, @Nullable Drawable end, @Nullable Drawable bottom) {
2411
2412        if (start != null) {
2413            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2414        }
2415        if (end != null) {
2416            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2417        }
2418        if (top != null) {
2419            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2420        }
2421        if (bottom != null) {
2422            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2423        }
2424        setCompoundDrawablesRelative(start, top, end, bottom);
2425    }
2426
2427    /**
2428     * Returns drawables for the left, top, right, and bottom borders.
2429     *
2430     * @attr ref android.R.styleable#TextView_drawableLeft
2431     * @attr ref android.R.styleable#TextView_drawableTop
2432     * @attr ref android.R.styleable#TextView_drawableRight
2433     * @attr ref android.R.styleable#TextView_drawableBottom
2434     */
2435    @NonNull
2436    public Drawable[] getCompoundDrawables() {
2437        final Drawables dr = mDrawables;
2438        if (dr != null) {
2439            return dr.mShowing.clone();
2440        } else {
2441            return new Drawable[] { null, null, null, null };
2442        }
2443    }
2444
2445    /**
2446     * Returns drawables for the start, top, end, and bottom borders.
2447     *
2448     * @attr ref android.R.styleable#TextView_drawableStart
2449     * @attr ref android.R.styleable#TextView_drawableTop
2450     * @attr ref android.R.styleable#TextView_drawableEnd
2451     * @attr ref android.R.styleable#TextView_drawableBottom
2452     */
2453    @NonNull
2454    public Drawable[] getCompoundDrawablesRelative() {
2455        final Drawables dr = mDrawables;
2456        if (dr != null) {
2457            return new Drawable[] {
2458                dr.mDrawableStart, dr.mShowing[Drawables.TOP],
2459                dr.mDrawableEnd, dr.mShowing[Drawables.BOTTOM]
2460            };
2461        } else {
2462            return new Drawable[] { null, null, null, null };
2463        }
2464    }
2465
2466    /**
2467     * Sets the size of the padding between the compound drawables and
2468     * the text.
2469     *
2470     * @attr ref android.R.styleable#TextView_drawablePadding
2471     */
2472    @android.view.RemotableViewMethod
2473    public void setCompoundDrawablePadding(int pad) {
2474        Drawables dr = mDrawables;
2475        if (pad == 0) {
2476            if (dr != null) {
2477                dr.mDrawablePadding = pad;
2478            }
2479        } else {
2480            if (dr == null) {
2481                mDrawables = dr = new Drawables(getContext());
2482            }
2483            dr.mDrawablePadding = pad;
2484        }
2485
2486        invalidate();
2487        requestLayout();
2488    }
2489
2490    /**
2491     * Returns the padding between the compound drawables and the text.
2492     *
2493     * @attr ref android.R.styleable#TextView_drawablePadding
2494     */
2495    public int getCompoundDrawablePadding() {
2496        final Drawables dr = mDrawables;
2497        return dr != null ? dr.mDrawablePadding : 0;
2498    }
2499
2500    /**
2501     * Applies a tint to the compound drawables. Does not modify the
2502     * current tint mode, which is {@link PorterDuff.Mode#SRC_IN} by default.
2503     * <p>
2504     * Subsequent calls to
2505     * {@link #setCompoundDrawables(Drawable, Drawable, Drawable, Drawable)}
2506     * and related methods will automatically mutate the drawables and apply
2507     * the specified tint and tint mode using
2508     * {@link Drawable#setTintList(ColorStateList)}.
2509     *
2510     * @param tint the tint to apply, may be {@code null} to clear tint
2511     *
2512     * @attr ref android.R.styleable#TextView_drawableTint
2513     * @see #getCompoundDrawableTintList()
2514     * @see Drawable#setTintList(ColorStateList)
2515     */
2516    public void setCompoundDrawableTintList(@Nullable ColorStateList tint) {
2517        if (mDrawables == null) {
2518            mDrawables = new Drawables(getContext());
2519        }
2520        mDrawables.mTintList = tint;
2521        mDrawables.mHasTint = true;
2522
2523        applyCompoundDrawableTint();
2524    }
2525
2526    /**
2527     * @return the tint applied to the compound drawables
2528     * @attr ref android.R.styleable#TextView_drawableTint
2529     * @see #setCompoundDrawableTintList(ColorStateList)
2530     */
2531    public ColorStateList getCompoundDrawableTintList() {
2532        return mDrawables != null ? mDrawables.mTintList : null;
2533    }
2534
2535    /**
2536     * Specifies the blending mode used to apply the tint specified by
2537     * {@link #setCompoundDrawableTintList(ColorStateList)} to the compound
2538     * drawables. The default mode is {@link PorterDuff.Mode#SRC_IN}.
2539     *
2540     * @param tintMode the blending mode used to apply the tint, may be
2541     *                 {@code null} to clear tint
2542     * @attr ref android.R.styleable#TextView_drawableTintMode
2543     * @see #setCompoundDrawableTintList(ColorStateList)
2544     * @see Drawable#setTintMode(PorterDuff.Mode)
2545     */
2546    public void setCompoundDrawableTintMode(@Nullable PorterDuff.Mode tintMode) {
2547        if (mDrawables == null) {
2548            mDrawables = new Drawables(getContext());
2549        }
2550        mDrawables.mTintMode = tintMode;
2551        mDrawables.mHasTintMode = true;
2552
2553        applyCompoundDrawableTint();
2554    }
2555
2556    /**
2557     * Returns the blending mode used to apply the tint to the compound
2558     * drawables, if specified.
2559     *
2560     * @return the blending mode used to apply the tint to the compound
2561     *         drawables
2562     * @attr ref android.R.styleable#TextView_drawableTintMode
2563     * @see #setCompoundDrawableTintMode(PorterDuff.Mode)
2564     */
2565    public PorterDuff.Mode getCompoundDrawableTintMode() {
2566        return mDrawables != null ? mDrawables.mTintMode : null;
2567    }
2568
2569    private void applyCompoundDrawableTint() {
2570        if (mDrawables == null) {
2571            return;
2572        }
2573
2574        if (mDrawables.mHasTint || mDrawables.mHasTintMode) {
2575            final ColorStateList tintList = mDrawables.mTintList;
2576            final PorterDuff.Mode tintMode = mDrawables.mTintMode;
2577            final boolean hasTint = mDrawables.mHasTint;
2578            final boolean hasTintMode = mDrawables.mHasTintMode;
2579            final int[] state = getDrawableState();
2580
2581            for (Drawable dr : mDrawables.mShowing) {
2582                if (dr == null) {
2583                    continue;
2584                }
2585
2586                if (dr == mDrawables.mDrawableError) {
2587                    // From a developer's perspective, the error drawable isn't
2588                    // a compound drawable. Don't apply the generic compound
2589                    // drawable tint to it.
2590                    continue;
2591                }
2592
2593                dr.mutate();
2594
2595                if (hasTint) {
2596                    dr.setTintList(tintList);
2597                }
2598
2599                if (hasTintMode) {
2600                    dr.setTintMode(tintMode);
2601                }
2602
2603                // The drawable (or one of its children) may not have been
2604                // stateful before applying the tint, so let's try again.
2605                if (dr.isStateful()) {
2606                    dr.setState(state);
2607                }
2608            }
2609        }
2610    }
2611
2612    @Override
2613    public void setPadding(int left, int top, int right, int bottom) {
2614        if (left != mPaddingLeft ||
2615            right != mPaddingRight ||
2616            top != mPaddingTop ||
2617            bottom != mPaddingBottom) {
2618            nullLayouts();
2619        }
2620
2621        // the super call will requestLayout()
2622        super.setPadding(left, top, right, bottom);
2623        invalidate();
2624    }
2625
2626    @Override
2627    public void setPaddingRelative(int start, int top, int end, int bottom) {
2628        if (start != getPaddingStart() ||
2629            end != getPaddingEnd() ||
2630            top != mPaddingTop ||
2631            bottom != mPaddingBottom) {
2632            nullLayouts();
2633        }
2634
2635        // the super call will requestLayout()
2636        super.setPaddingRelative(start, top, end, bottom);
2637        invalidate();
2638    }
2639
2640    /**
2641     * Gets the autolink mask of the text.  See {@link
2642     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2643     * possible values.
2644     *
2645     * @attr ref android.R.styleable#TextView_autoLink
2646     */
2647    public final int getAutoLinkMask() {
2648        return mAutoLinkMask;
2649    }
2650
2651    /**
2652     * Sets the text appearance from the specified style resource.
2653     * <p>
2654     * Use a framework-defined {@code TextAppearance} style like
2655     * {@link android.R.style#TextAppearance_Material_Body1 @android:style/TextAppearance.Material.Body1}
2656     * or see {@link android.R.styleable#TextAppearance TextAppearance} for the
2657     * set of attributes that can be used in a custom style.
2658     *
2659     * @param resId the resource identifier of the style to apply
2660     * @attr ref android.R.styleable#TextView_textAppearance
2661     */
2662    @SuppressWarnings("deprecation")
2663    public void setTextAppearance(@StyleRes int resId) {
2664        setTextAppearance(mContext, resId);
2665    }
2666
2667    /**
2668     * Sets the text color, size, style, hint color, and highlight color
2669     * from the specified TextAppearance resource.
2670     *
2671     * @deprecated Use {@link #setTextAppearance(int)} instead.
2672     */
2673    @Deprecated
2674    public void setTextAppearance(Context context, @StyleRes int resId) {
2675        final TypedArray ta = context.obtainStyledAttributes(resId, R.styleable.TextAppearance);
2676
2677        final int textColorHighlight = ta.getColor(
2678                R.styleable.TextAppearance_textColorHighlight, 0);
2679        if (textColorHighlight != 0) {
2680            setHighlightColor(textColorHighlight);
2681        }
2682
2683        final ColorStateList textColor = ta.getColorStateList(R.styleable.TextAppearance_textColor);
2684        if (textColor != null) {
2685            setTextColor(textColor);
2686        }
2687
2688        final int textSize = ta.getDimensionPixelSize(R.styleable.TextAppearance_textSize, 0);
2689        if (textSize != 0) {
2690            setRawTextSize(textSize);
2691        }
2692
2693        final ColorStateList textColorHint = ta.getColorStateList(
2694                R.styleable.TextAppearance_textColorHint);
2695        if (textColorHint != null) {
2696            setHintTextColor(textColorHint);
2697        }
2698
2699        final ColorStateList textColorLink = ta.getColorStateList(
2700                R.styleable.TextAppearance_textColorLink);
2701        if (textColorLink != null) {
2702            setLinkTextColor(textColorLink);
2703        }
2704
2705        final String fontFamily = ta.getString(R.styleable.TextAppearance_fontFamily);
2706        final int typefaceIndex = ta.getInt(R.styleable.TextAppearance_typeface, -1);
2707        final int styleIndex = ta.getInt(R.styleable.TextAppearance_textStyle, -1);
2708        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
2709
2710        final int shadowColor = ta.getInt(R.styleable.TextAppearance_shadowColor, 0);
2711        if (shadowColor != 0) {
2712            final float dx = ta.getFloat(R.styleable.TextAppearance_shadowDx, 0);
2713            final float dy = ta.getFloat(R.styleable.TextAppearance_shadowDy, 0);
2714            final float r = ta.getFloat(R.styleable.TextAppearance_shadowRadius, 0);
2715            setShadowLayer(r, dx, dy, shadowColor);
2716        }
2717
2718        if (ta.getBoolean(R.styleable.TextAppearance_textAllCaps, false)) {
2719            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2720        }
2721
2722        if (ta.hasValue(R.styleable.TextAppearance_elegantTextHeight)) {
2723            setElegantTextHeight(ta.getBoolean(
2724                R.styleable.TextAppearance_elegantTextHeight, false));
2725        }
2726
2727        if (ta.hasValue(R.styleable.TextAppearance_letterSpacing)) {
2728            setLetterSpacing(ta.getFloat(
2729                R.styleable.TextAppearance_letterSpacing, 0));
2730        }
2731
2732        if (ta.hasValue(R.styleable.TextAppearance_fontFeatureSettings)) {
2733            setFontFeatureSettings(ta.getString(
2734                R.styleable.TextAppearance_fontFeatureSettings));
2735        }
2736
2737        ta.recycle();
2738    }
2739
2740    /**
2741     * Get the default {@link Locale} of the text in this TextView.
2742     * @return the default {@link Locale} of the text in this TextView.
2743     */
2744    public Locale getTextLocale() {
2745        return mTextPaint.getTextLocale();
2746    }
2747
2748    /**
2749     * Set the default {@link Locale} of the text in this TextView to the given value. This value
2750     * is used to choose appropriate typefaces for ambiguous characters. Typically used for CJK
2751     * locales to disambiguate Hanzi/Kanji/Hanja characters.
2752     *
2753     * @param locale the {@link Locale} for drawing text, must not be null.
2754     *
2755     * @see Paint#setTextLocale
2756     */
2757    public void setTextLocale(Locale locale) {
2758        mLocaleChanged = true;
2759        mTextPaint.setTextLocale(locale);
2760    }
2761
2762    @Override
2763    protected void onConfigurationChanged(Configuration newConfig) {
2764        super.onConfigurationChanged(newConfig);
2765        if (!mLocaleChanged) {
2766            mTextPaint.setTextLocale(Locale.getDefault());
2767        }
2768    }
2769
2770    /**
2771     * @return the size (in pixels) of the default text size in this TextView.
2772     */
2773    @ViewDebug.ExportedProperty(category = "text")
2774    public float getTextSize() {
2775        return mTextPaint.getTextSize();
2776    }
2777
2778    /**
2779     * @return the size (in scaled pixels) of thee default text size in this TextView.
2780     * @hide
2781     */
2782    @ViewDebug.ExportedProperty(category = "text")
2783    public float getScaledTextSize() {
2784        return mTextPaint.getTextSize() / mTextPaint.density;
2785    }
2786
2787    /** @hide */
2788    @ViewDebug.ExportedProperty(category = "text", mapping = {
2789            @ViewDebug.IntToString(from = Typeface.NORMAL, to = "NORMAL"),
2790            @ViewDebug.IntToString(from = Typeface.BOLD, to = "BOLD"),
2791            @ViewDebug.IntToString(from = Typeface.ITALIC, to = "ITALIC"),
2792            @ViewDebug.IntToString(from = Typeface.BOLD_ITALIC, to = "BOLD_ITALIC")
2793    })
2794    public int getTypefaceStyle() {
2795        return mTextPaint.getTypeface().getStyle();
2796    }
2797
2798    /**
2799     * Set the default text size to the given value, interpreted as "scaled
2800     * pixel" units.  This size is adjusted based on the current density and
2801     * user font size preference.
2802     *
2803     * @param size The scaled pixel size.
2804     *
2805     * @attr ref android.R.styleable#TextView_textSize
2806     */
2807    @android.view.RemotableViewMethod
2808    public void setTextSize(float size) {
2809        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2810    }
2811
2812    /**
2813     * Set the default text size to a given unit and value.  See {@link
2814     * TypedValue} for the possible dimension units.
2815     *
2816     * @param unit The desired dimension unit.
2817     * @param size The desired size in the given units.
2818     *
2819     * @attr ref android.R.styleable#TextView_textSize
2820     */
2821    public void setTextSize(int unit, float size) {
2822        Context c = getContext();
2823        Resources r;
2824
2825        if (c == null)
2826            r = Resources.getSystem();
2827        else
2828            r = c.getResources();
2829
2830        setRawTextSize(TypedValue.applyDimension(
2831                unit, size, r.getDisplayMetrics()));
2832    }
2833
2834    private void setRawTextSize(float size) {
2835        if (size != mTextPaint.getTextSize()) {
2836            mTextPaint.setTextSize(size);
2837
2838            if (mLayout != null) {
2839                nullLayouts();
2840                requestLayout();
2841                invalidate();
2842            }
2843        }
2844    }
2845
2846    /**
2847     * @return the extent by which text is currently being stretched
2848     * horizontally.  This will usually be 1.
2849     */
2850    public float getTextScaleX() {
2851        return mTextPaint.getTextScaleX();
2852    }
2853
2854    /**
2855     * Sets the extent by which text should be stretched horizontally.
2856     *
2857     * @attr ref android.R.styleable#TextView_textScaleX
2858     */
2859    @android.view.RemotableViewMethod
2860    public void setTextScaleX(float size) {
2861        if (size != mTextPaint.getTextScaleX()) {
2862            mUserSetTextScaleX = true;
2863            mTextPaint.setTextScaleX(size);
2864
2865            if (mLayout != null) {
2866                nullLayouts();
2867                requestLayout();
2868                invalidate();
2869            }
2870        }
2871    }
2872
2873    /**
2874     * Sets the typeface and style in which the text should be displayed.
2875     * Note that not all Typeface families actually have bold and italic
2876     * variants, so you may need to use
2877     * {@link #setTypeface(Typeface, int)} to get the appearance
2878     * that you actually want.
2879     *
2880     * @see #getTypeface()
2881     *
2882     * @attr ref android.R.styleable#TextView_fontFamily
2883     * @attr ref android.R.styleable#TextView_typeface
2884     * @attr ref android.R.styleable#TextView_textStyle
2885     */
2886    public void setTypeface(Typeface tf) {
2887        if (mTextPaint.getTypeface() != tf) {
2888            mTextPaint.setTypeface(tf);
2889
2890            if (mLayout != null) {
2891                nullLayouts();
2892                requestLayout();
2893                invalidate();
2894            }
2895        }
2896    }
2897
2898    /**
2899     * @return the current typeface and style in which the text is being
2900     * displayed.
2901     *
2902     * @see #setTypeface(Typeface)
2903     *
2904     * @attr ref android.R.styleable#TextView_fontFamily
2905     * @attr ref android.R.styleable#TextView_typeface
2906     * @attr ref android.R.styleable#TextView_textStyle
2907     */
2908    public Typeface getTypeface() {
2909        return mTextPaint.getTypeface();
2910    }
2911
2912    /**
2913     * Set the TextView's elegant height metrics flag. This setting selects font
2914     * variants that have not been compacted to fit Latin-based vertical
2915     * metrics, and also increases top and bottom bounds to provide more space.
2916     *
2917     * @param elegant set the paint's elegant metrics flag.
2918     *
2919     * @attr ref android.R.styleable#TextView_elegantTextHeight
2920     */
2921    public void setElegantTextHeight(boolean elegant) {
2922        mTextPaint.setElegantTextHeight(elegant);
2923    }
2924
2925    /**
2926     * @return the extent by which text is currently being letter-spaced.
2927     * This will normally be 0.
2928     *
2929     * @see #setLetterSpacing(float)
2930     * @see Paint#setLetterSpacing
2931     */
2932    public float getLetterSpacing() {
2933        return mTextPaint.getLetterSpacing();
2934    }
2935
2936    /**
2937     * Sets text letter-spacing.  The value is in 'EM' units.  Typical values
2938     * for slight expansion will be around 0.05.  Negative values tighten text.
2939     *
2940     * @see #getLetterSpacing()
2941     * @see Paint#getLetterSpacing
2942     *
2943     * @attr ref android.R.styleable#TextView_letterSpacing
2944     */
2945    @android.view.RemotableViewMethod
2946    public void setLetterSpacing(float letterSpacing) {
2947        if (letterSpacing != mTextPaint.getLetterSpacing()) {
2948            mTextPaint.setLetterSpacing(letterSpacing);
2949
2950            if (mLayout != null) {
2951                nullLayouts();
2952                requestLayout();
2953                invalidate();
2954            }
2955        }
2956    }
2957
2958    /**
2959     * @return the currently set font feature settings.  Default is null.
2960     *
2961     * @see #setFontFeatureSettings(String)
2962     * @see Paint#setFontFeatureSettings
2963     */
2964    @Nullable
2965    public String getFontFeatureSettings() {
2966        return mTextPaint.getFontFeatureSettings();
2967    }
2968
2969    /**
2970     * Sets the break strategy for breaking paragraphs into lines. The default value for
2971     * TextView is {@link Layout#BREAK_STRATEGY_HIGH_QUALITY}, and the default value for
2972     * EditText is {@link Layout#BREAK_STRATEGY_SIMPLE}, the latter to avoid the
2973     * text "dancing" when being edited.
2974     *
2975     * @attr ref android.R.styleable#TextView_breakStrategy
2976     * @see #getBreakStrategy()
2977     */
2978    public void setBreakStrategy(@Layout.BreakStrategy int breakStrategy) {
2979        mBreakStrategy = breakStrategy;
2980        if (mLayout != null) {
2981            nullLayouts();
2982            requestLayout();
2983            invalidate();
2984        }
2985    }
2986
2987    /**
2988     * @return the currently set break strategy.
2989     *
2990     * @attr ref android.R.styleable#TextView_breakStrategy
2991     * @see #setBreakStrategy(int)
2992     */
2993    @Layout.BreakStrategy
2994    public int getBreakStrategy() {
2995        return mBreakStrategy;
2996    }
2997
2998    /**
2999     * Sets font feature settings.  The format is the same as the CSS
3000     * font-feature-settings attribute:
3001     * http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings
3002     *
3003     * @param fontFeatureSettings font feature settings represented as CSS compatible string
3004     * @see #getFontFeatureSettings()
3005     * @see Paint#getFontFeatureSettings
3006     *
3007     * @attr ref android.R.styleable#TextView_fontFeatureSettings
3008     */
3009    @android.view.RemotableViewMethod
3010    public void setFontFeatureSettings(@Nullable String fontFeatureSettings) {
3011        if (fontFeatureSettings != mTextPaint.getFontFeatureSettings()) {
3012            mTextPaint.setFontFeatureSettings(fontFeatureSettings);
3013
3014            if (mLayout != null) {
3015                nullLayouts();
3016                requestLayout();
3017                invalidate();
3018            }
3019        }
3020    }
3021
3022
3023    /**
3024     * Sets the text color for all the states (normal, selected,
3025     * focused) to be this color.
3026     *
3027     * @see #setTextColor(ColorStateList)
3028     * @see #getTextColors()
3029     *
3030     * @attr ref android.R.styleable#TextView_textColor
3031     */
3032    @android.view.RemotableViewMethod
3033    public void setTextColor(@ColorInt int color) {
3034        mTextColor = ColorStateList.valueOf(color);
3035        updateTextColors();
3036    }
3037
3038    /**
3039     * Sets the text color.
3040     *
3041     * @see #setTextColor(int)
3042     * @see #getTextColors()
3043     * @see #setHintTextColor(ColorStateList)
3044     * @see #setLinkTextColor(ColorStateList)
3045     *
3046     * @attr ref android.R.styleable#TextView_textColor
3047     */
3048    public void setTextColor(ColorStateList colors) {
3049        if (colors == null) {
3050            throw new NullPointerException();
3051        }
3052
3053        mTextColor = colors;
3054        updateTextColors();
3055    }
3056
3057    /**
3058     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
3059     *
3060     * @see #setTextColor(ColorStateList)
3061     * @see #setTextColor(int)
3062     *
3063     * @attr ref android.R.styleable#TextView_textColor
3064     */
3065    public final ColorStateList getTextColors() {
3066        return mTextColor;
3067    }
3068
3069    /**
3070     * <p>Return the current color selected for normal text.</p>
3071     *
3072     * @return Returns the current text color.
3073     */
3074    @ColorInt
3075    public final int getCurrentTextColor() {
3076        return mCurTextColor;
3077    }
3078
3079    /**
3080     * Sets the color used to display the selection highlight.
3081     *
3082     * @attr ref android.R.styleable#TextView_textColorHighlight
3083     */
3084    @android.view.RemotableViewMethod
3085    public void setHighlightColor(@ColorInt int color) {
3086        if (mHighlightColor != color) {
3087            mHighlightColor = color;
3088            invalidate();
3089        }
3090    }
3091
3092    /**
3093     * @return the color used to display the selection highlight
3094     *
3095     * @see #setHighlightColor(int)
3096     *
3097     * @attr ref android.R.styleable#TextView_textColorHighlight
3098     */
3099    @ColorInt
3100    public int getHighlightColor() {
3101        return mHighlightColor;
3102    }
3103
3104    /**
3105     * Sets whether the soft input method will be made visible when this
3106     * TextView gets focused. The default is true.
3107     */
3108    @android.view.RemotableViewMethod
3109    public final void setShowSoftInputOnFocus(boolean show) {
3110        createEditorIfNeeded();
3111        mEditor.mShowSoftInputOnFocus = show;
3112    }
3113
3114    /**
3115     * Returns whether the soft input method will be made visible when this
3116     * TextView gets focused. The default is true.
3117     */
3118    public final boolean getShowSoftInputOnFocus() {
3119        // When there is no Editor, return default true value
3120        return mEditor == null || mEditor.mShowSoftInputOnFocus;
3121    }
3122
3123    /**
3124     * Gives the text a shadow of the specified blur radius and color, the specified
3125     * distance from its drawn position.
3126     * <p>
3127     * The text shadow produced does not interact with the properties on view
3128     * that are responsible for real time shadows,
3129     * {@link View#getElevation() elevation} and
3130     * {@link View#getTranslationZ() translationZ}.
3131     *
3132     * @see Paint#setShadowLayer(float, float, float, int)
3133     *
3134     * @attr ref android.R.styleable#TextView_shadowColor
3135     * @attr ref android.R.styleable#TextView_shadowDx
3136     * @attr ref android.R.styleable#TextView_shadowDy
3137     * @attr ref android.R.styleable#TextView_shadowRadius
3138     */
3139    public void setShadowLayer(float radius, float dx, float dy, int color) {
3140        mTextPaint.setShadowLayer(radius, dx, dy, color);
3141
3142        mShadowRadius = radius;
3143        mShadowDx = dx;
3144        mShadowDy = dy;
3145        mShadowColor = color;
3146
3147        // Will change text clip region
3148        if (mEditor != null) mEditor.invalidateTextDisplayList();
3149        invalidate();
3150    }
3151
3152    /**
3153     * Gets the radius of the shadow layer.
3154     *
3155     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
3156     *
3157     * @see #setShadowLayer(float, float, float, int)
3158     *
3159     * @attr ref android.R.styleable#TextView_shadowRadius
3160     */
3161    public float getShadowRadius() {
3162        return mShadowRadius;
3163    }
3164
3165    /**
3166     * @return the horizontal offset of the shadow layer
3167     *
3168     * @see #setShadowLayer(float, float, float, int)
3169     *
3170     * @attr ref android.R.styleable#TextView_shadowDx
3171     */
3172    public float getShadowDx() {
3173        return mShadowDx;
3174    }
3175
3176    /**
3177     * @return the vertical offset of the shadow layer
3178     *
3179     * @see #setShadowLayer(float, float, float, int)
3180     *
3181     * @attr ref android.R.styleable#TextView_shadowDy
3182     */
3183    public float getShadowDy() {
3184        return mShadowDy;
3185    }
3186
3187    /**
3188     * @return the color of the shadow layer
3189     *
3190     * @see #setShadowLayer(float, float, float, int)
3191     *
3192     * @attr ref android.R.styleable#TextView_shadowColor
3193     */
3194    @ColorInt
3195    public int getShadowColor() {
3196        return mShadowColor;
3197    }
3198
3199    /**
3200     * @return the base paint used for the text.  Please use this only to
3201     * consult the Paint's properties and not to change them.
3202     */
3203    public TextPaint getPaint() {
3204        return mTextPaint;
3205    }
3206
3207    /**
3208     * Sets the autolink mask of the text.  See {@link
3209     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
3210     * possible values.
3211     *
3212     * @attr ref android.R.styleable#TextView_autoLink
3213     */
3214    @android.view.RemotableViewMethod
3215    public final void setAutoLinkMask(int mask) {
3216        mAutoLinkMask = mask;
3217    }
3218
3219    /**
3220     * Sets whether the movement method will automatically be set to
3221     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
3222     * set to nonzero and links are detected in {@link #setText}.
3223     * The default is true.
3224     *
3225     * @attr ref android.R.styleable#TextView_linksClickable
3226     */
3227    @android.view.RemotableViewMethod
3228    public final void setLinksClickable(boolean whether) {
3229        mLinksClickable = whether;
3230    }
3231
3232    /**
3233     * Returns whether the movement method will automatically be set to
3234     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
3235     * set to nonzero and links are detected in {@link #setText}.
3236     * The default is true.
3237     *
3238     * @attr ref android.R.styleable#TextView_linksClickable
3239     */
3240    public final boolean getLinksClickable() {
3241        return mLinksClickable;
3242    }
3243
3244    /**
3245     * Returns the list of URLSpans attached to the text
3246     * (by {@link Linkify} or otherwise) if any.  You can call
3247     * {@link URLSpan#getURL} on them to find where they link to
3248     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
3249     * to find the region of the text they are attached to.
3250     */
3251    public URLSpan[] getUrls() {
3252        if (mText instanceof Spanned) {
3253            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
3254        } else {
3255            return new URLSpan[0];
3256        }
3257    }
3258
3259    /**
3260     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
3261     * TextView.
3262     *
3263     * @see #setHintTextColor(ColorStateList)
3264     * @see #getHintTextColors()
3265     * @see #setTextColor(int)
3266     *
3267     * @attr ref android.R.styleable#TextView_textColorHint
3268     */
3269    @android.view.RemotableViewMethod
3270    public final void setHintTextColor(@ColorInt int color) {
3271        mHintTextColor = ColorStateList.valueOf(color);
3272        updateTextColors();
3273    }
3274
3275    /**
3276     * Sets the color of the hint text.
3277     *
3278     * @see #getHintTextColors()
3279     * @see #setHintTextColor(int)
3280     * @see #setTextColor(ColorStateList)
3281     * @see #setLinkTextColor(ColorStateList)
3282     *
3283     * @attr ref android.R.styleable#TextView_textColorHint
3284     */
3285    public final void setHintTextColor(ColorStateList colors) {
3286        mHintTextColor = colors;
3287        updateTextColors();
3288    }
3289
3290    /**
3291     * @return the color of the hint text, for the different states of this TextView.
3292     *
3293     * @see #setHintTextColor(ColorStateList)
3294     * @see #setHintTextColor(int)
3295     * @see #setTextColor(ColorStateList)
3296     * @see #setLinkTextColor(ColorStateList)
3297     *
3298     * @attr ref android.R.styleable#TextView_textColorHint
3299     */
3300    public final ColorStateList getHintTextColors() {
3301        return mHintTextColor;
3302    }
3303
3304    /**
3305     * <p>Return the current color selected to paint the hint text.</p>
3306     *
3307     * @return Returns the current hint text color.
3308     */
3309    @ColorInt
3310    public final int getCurrentHintTextColor() {
3311        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
3312    }
3313
3314    /**
3315     * Sets the color of links in the text.
3316     *
3317     * @see #setLinkTextColor(ColorStateList)
3318     * @see #getLinkTextColors()
3319     *
3320     * @attr ref android.R.styleable#TextView_textColorLink
3321     */
3322    @android.view.RemotableViewMethod
3323    public final void setLinkTextColor(@ColorInt int color) {
3324        mLinkTextColor = ColorStateList.valueOf(color);
3325        updateTextColors();
3326    }
3327
3328    /**
3329     * Sets the color of links in the text.
3330     *
3331     * @see #setLinkTextColor(int)
3332     * @see #getLinkTextColors()
3333     * @see #setTextColor(ColorStateList)
3334     * @see #setHintTextColor(ColorStateList)
3335     *
3336     * @attr ref android.R.styleable#TextView_textColorLink
3337     */
3338    public final void setLinkTextColor(ColorStateList colors) {
3339        mLinkTextColor = colors;
3340        updateTextColors();
3341    }
3342
3343    /**
3344     * @return the list of colors used to paint the links in the text, for the different states of
3345     * this TextView
3346     *
3347     * @see #setLinkTextColor(ColorStateList)
3348     * @see #setLinkTextColor(int)
3349     *
3350     * @attr ref android.R.styleable#TextView_textColorLink
3351     */
3352    public final ColorStateList getLinkTextColors() {
3353        return mLinkTextColor;
3354    }
3355
3356    /**
3357     * Sets the horizontal alignment of the text and the
3358     * vertical gravity that will be used when there is extra space
3359     * in the TextView beyond what is required for the text itself.
3360     *
3361     * @see android.view.Gravity
3362     * @attr ref android.R.styleable#TextView_gravity
3363     */
3364    public void setGravity(int gravity) {
3365        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
3366            gravity |= Gravity.START;
3367        }
3368        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
3369            gravity |= Gravity.TOP;
3370        }
3371
3372        boolean newLayout = false;
3373
3374        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
3375            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
3376            newLayout = true;
3377        }
3378
3379        if (gravity != mGravity) {
3380            invalidate();
3381        }
3382
3383        mGravity = gravity;
3384
3385        if (mLayout != null && newLayout) {
3386            // XXX this is heavy-handed because no actual content changes.
3387            int want = mLayout.getWidth();
3388            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
3389
3390            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
3391                          mRight - mLeft - getCompoundPaddingLeft() -
3392                          getCompoundPaddingRight(), true);
3393        }
3394    }
3395
3396    /**
3397     * Returns the horizontal and vertical alignment of this TextView.
3398     *
3399     * @see android.view.Gravity
3400     * @attr ref android.R.styleable#TextView_gravity
3401     */
3402    public int getGravity() {
3403        return mGravity;
3404    }
3405
3406    /**
3407     * @return the flags on the Paint being used to display the text.
3408     * @see Paint#getFlags
3409     */
3410    public int getPaintFlags() {
3411        return mTextPaint.getFlags();
3412    }
3413
3414    /**
3415     * Sets flags on the Paint being used to display the text and
3416     * reflows the text if they are different from the old flags.
3417     * @see Paint#setFlags
3418     */
3419    @android.view.RemotableViewMethod
3420    public void setPaintFlags(int flags) {
3421        if (mTextPaint.getFlags() != flags) {
3422            mTextPaint.setFlags(flags);
3423
3424            if (mLayout != null) {
3425                nullLayouts();
3426                requestLayout();
3427                invalidate();
3428            }
3429        }
3430    }
3431
3432    /**
3433     * Sets whether the text should be allowed to be wider than the
3434     * View is.  If false, it will be wrapped to the width of the View.
3435     *
3436     * @attr ref android.R.styleable#TextView_scrollHorizontally
3437     */
3438    public void setHorizontallyScrolling(boolean whether) {
3439        if (mHorizontallyScrolling != whether) {
3440            mHorizontallyScrolling = whether;
3441
3442            if (mLayout != null) {
3443                nullLayouts();
3444                requestLayout();
3445                invalidate();
3446            }
3447        }
3448    }
3449
3450    /**
3451     * Returns whether the text is allowed to be wider than the View is.
3452     * If false, the text will be wrapped to the width of the View.
3453     *
3454     * @attr ref android.R.styleable#TextView_scrollHorizontally
3455     * @hide
3456     */
3457    public boolean getHorizontallyScrolling() {
3458        return mHorizontallyScrolling;
3459    }
3460
3461    /**
3462     * Makes the TextView at least this many lines tall.
3463     *
3464     * Setting this value overrides any other (minimum) height setting. A single line TextView will
3465     * set this value to 1.
3466     *
3467     * @see #getMinLines()
3468     *
3469     * @attr ref android.R.styleable#TextView_minLines
3470     */
3471    @android.view.RemotableViewMethod
3472    public void setMinLines(int minlines) {
3473        mMinimum = minlines;
3474        mMinMode = LINES;
3475
3476        requestLayout();
3477        invalidate();
3478    }
3479
3480    /**
3481     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
3482     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
3483     *
3484     * @see #setMinLines(int)
3485     *
3486     * @attr ref android.R.styleable#TextView_minLines
3487     */
3488    public int getMinLines() {
3489        return mMinMode == LINES ? mMinimum : -1;
3490    }
3491
3492    /**
3493     * Makes the TextView at least this many pixels tall.
3494     *
3495     * Setting this value overrides any other (minimum) number of lines setting.
3496     *
3497     * @attr ref android.R.styleable#TextView_minHeight
3498     */
3499    @android.view.RemotableViewMethod
3500    public void setMinHeight(int minHeight) {
3501        mMinimum = minHeight;
3502        mMinMode = PIXELS;
3503
3504        requestLayout();
3505        invalidate();
3506    }
3507
3508    /**
3509     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
3510     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
3511     *
3512     * @see #setMinHeight(int)
3513     *
3514     * @attr ref android.R.styleable#TextView_minHeight
3515     */
3516    public int getMinHeight() {
3517        return mMinMode == PIXELS ? mMinimum : -1;
3518    }
3519
3520    /**
3521     * Makes the TextView at most this many lines tall.
3522     *
3523     * Setting this value overrides any other (maximum) height setting.
3524     *
3525     * @attr ref android.R.styleable#TextView_maxLines
3526     */
3527    @android.view.RemotableViewMethod
3528    public void setMaxLines(int maxlines) {
3529        mMaximum = maxlines;
3530        mMaxMode = LINES;
3531
3532        requestLayout();
3533        invalidate();
3534    }
3535
3536    /**
3537     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
3538     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
3539     *
3540     * @see #setMaxLines(int)
3541     *
3542     * @attr ref android.R.styleable#TextView_maxLines
3543     */
3544    public int getMaxLines() {
3545        return mMaxMode == LINES ? mMaximum : -1;
3546    }
3547
3548    /**
3549     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
3550     * {@link #setMaxLines(int)} method.
3551     *
3552     * Setting this value overrides any other (maximum) number of lines setting.
3553     *
3554     * @attr ref android.R.styleable#TextView_maxHeight
3555     */
3556    @android.view.RemotableViewMethod
3557    public void setMaxHeight(int maxHeight) {
3558        mMaximum = maxHeight;
3559        mMaxMode = PIXELS;
3560
3561        requestLayout();
3562        invalidate();
3563    }
3564
3565    /**
3566     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
3567     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
3568     *
3569     * @see #setMaxHeight(int)
3570     *
3571     * @attr ref android.R.styleable#TextView_maxHeight
3572     */
3573    public int getMaxHeight() {
3574        return mMaxMode == PIXELS ? mMaximum : -1;
3575    }
3576
3577    /**
3578     * Makes the TextView exactly this many lines tall.
3579     *
3580     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3581     * height setting. A single line TextView will set this value to 1.
3582     *
3583     * @attr ref android.R.styleable#TextView_lines
3584     */
3585    @android.view.RemotableViewMethod
3586    public void setLines(int lines) {
3587        mMaximum = mMinimum = lines;
3588        mMaxMode = mMinMode = LINES;
3589
3590        requestLayout();
3591        invalidate();
3592    }
3593
3594    /**
3595     * Makes the TextView exactly this many pixels tall.
3596     * You could do the same thing by specifying this number in the
3597     * LayoutParams.
3598     *
3599     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3600     * height setting.
3601     *
3602     * @attr ref android.R.styleable#TextView_height
3603     */
3604    @android.view.RemotableViewMethod
3605    public void setHeight(int pixels) {
3606        mMaximum = mMinimum = pixels;
3607        mMaxMode = mMinMode = PIXELS;
3608
3609        requestLayout();
3610        invalidate();
3611    }
3612
3613    /**
3614     * Makes the TextView at least this many ems wide
3615     *
3616     * @attr ref android.R.styleable#TextView_minEms
3617     */
3618    @android.view.RemotableViewMethod
3619    public void setMinEms(int minems) {
3620        mMinWidth = minems;
3621        mMinWidthMode = EMS;
3622
3623        requestLayout();
3624        invalidate();
3625    }
3626
3627    /**
3628     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
3629     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
3630     *
3631     * @see #setMinEms(int)
3632     * @see #setEms(int)
3633     *
3634     * @attr ref android.R.styleable#TextView_minEms
3635     */
3636    public int getMinEms() {
3637        return mMinWidthMode == EMS ? mMinWidth : -1;
3638    }
3639
3640    /**
3641     * Makes the TextView at least this many pixels wide
3642     *
3643     * @attr ref android.R.styleable#TextView_minWidth
3644     */
3645    @android.view.RemotableViewMethod
3646    public void setMinWidth(int minpixels) {
3647        mMinWidth = minpixels;
3648        mMinWidthMode = PIXELS;
3649
3650        requestLayout();
3651        invalidate();
3652    }
3653
3654    /**
3655     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
3656     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
3657     *
3658     * @see #setMinWidth(int)
3659     * @see #setWidth(int)
3660     *
3661     * @attr ref android.R.styleable#TextView_minWidth
3662     */
3663    public int getMinWidth() {
3664        return mMinWidthMode == PIXELS ? mMinWidth : -1;
3665    }
3666
3667    /**
3668     * Makes the TextView at most this many ems wide
3669     *
3670     * @attr ref android.R.styleable#TextView_maxEms
3671     */
3672    @android.view.RemotableViewMethod
3673    public void setMaxEms(int maxems) {
3674        mMaxWidth = maxems;
3675        mMaxWidthMode = EMS;
3676
3677        requestLayout();
3678        invalidate();
3679    }
3680
3681    /**
3682     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3683     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3684     *
3685     * @see #setMaxEms(int)
3686     * @see #setEms(int)
3687     *
3688     * @attr ref android.R.styleable#TextView_maxEms
3689     */
3690    public int getMaxEms() {
3691        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3692    }
3693
3694    /**
3695     * Makes the TextView at most this many pixels wide
3696     *
3697     * @attr ref android.R.styleable#TextView_maxWidth
3698     */
3699    @android.view.RemotableViewMethod
3700    public void setMaxWidth(int maxpixels) {
3701        mMaxWidth = maxpixels;
3702        mMaxWidthMode = PIXELS;
3703
3704        requestLayout();
3705        invalidate();
3706    }
3707
3708    /**
3709     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3710     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3711     *
3712     * @see #setMaxWidth(int)
3713     * @see #setWidth(int)
3714     *
3715     * @attr ref android.R.styleable#TextView_maxWidth
3716     */
3717    public int getMaxWidth() {
3718        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3719    }
3720
3721    /**
3722     * Makes the TextView exactly this many ems wide
3723     *
3724     * @see #setMaxEms(int)
3725     * @see #setMinEms(int)
3726     * @see #getMinEms()
3727     * @see #getMaxEms()
3728     *
3729     * @attr ref android.R.styleable#TextView_ems
3730     */
3731    @android.view.RemotableViewMethod
3732    public void setEms(int ems) {
3733        mMaxWidth = mMinWidth = ems;
3734        mMaxWidthMode = mMinWidthMode = EMS;
3735
3736        requestLayout();
3737        invalidate();
3738    }
3739
3740    /**
3741     * Makes the TextView exactly this many pixels wide.
3742     * You could do the same thing by specifying this number in the
3743     * LayoutParams.
3744     *
3745     * @see #setMaxWidth(int)
3746     * @see #setMinWidth(int)
3747     * @see #getMinWidth()
3748     * @see #getMaxWidth()
3749     *
3750     * @attr ref android.R.styleable#TextView_width
3751     */
3752    @android.view.RemotableViewMethod
3753    public void setWidth(int pixels) {
3754        mMaxWidth = mMinWidth = pixels;
3755        mMaxWidthMode = mMinWidthMode = PIXELS;
3756
3757        requestLayout();
3758        invalidate();
3759    }
3760
3761    /**
3762     * Sets line spacing for this TextView.  Each line will have its height
3763     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3764     *
3765     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3766     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3767     */
3768    public void setLineSpacing(float add, float mult) {
3769        if (mSpacingAdd != add || mSpacingMult != mult) {
3770            mSpacingAdd = add;
3771            mSpacingMult = mult;
3772
3773            if (mLayout != null) {
3774                nullLayouts();
3775                requestLayout();
3776                invalidate();
3777            }
3778        }
3779    }
3780
3781    /**
3782     * Gets the line spacing multiplier
3783     *
3784     * @return the value by which each line's height is multiplied to get its actual height.
3785     *
3786     * @see #setLineSpacing(float, float)
3787     * @see #getLineSpacingExtra()
3788     *
3789     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3790     */
3791    public float getLineSpacingMultiplier() {
3792        return mSpacingMult;
3793    }
3794
3795    /**
3796     * Gets the line spacing extra space
3797     *
3798     * @return the extra space that is added to the height of each lines of this TextView.
3799     *
3800     * @see #setLineSpacing(float, float)
3801     * @see #getLineSpacingMultiplier()
3802     *
3803     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3804     */
3805    public float getLineSpacingExtra() {
3806        return mSpacingAdd;
3807    }
3808
3809    /**
3810     * Convenience method: Append the specified text to the TextView's
3811     * display buffer, upgrading it to BufferType.EDITABLE if it was
3812     * not already editable.
3813     */
3814    public final void append(CharSequence text) {
3815        append(text, 0, text.length());
3816    }
3817
3818    /**
3819     * Convenience method: Append the specified text slice to the TextView's
3820     * display buffer, upgrading it to BufferType.EDITABLE if it was
3821     * not already editable.
3822     */
3823    public void append(CharSequence text, int start, int end) {
3824        if (!(mText instanceof Editable)) {
3825            setText(mText, BufferType.EDITABLE);
3826        }
3827
3828        ((Editable) mText).append(text, start, end);
3829    }
3830
3831    private void updateTextColors() {
3832        boolean inval = false;
3833        int color = mTextColor.getColorForState(getDrawableState(), 0);
3834        if (color != mCurTextColor) {
3835            mCurTextColor = color;
3836            inval = true;
3837        }
3838        if (mLinkTextColor != null) {
3839            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
3840            if (color != mTextPaint.linkColor) {
3841                mTextPaint.linkColor = color;
3842                inval = true;
3843            }
3844        }
3845        if (mHintTextColor != null) {
3846            color = mHintTextColor.getColorForState(getDrawableState(), 0);
3847            if (color != mCurHintTextColor) {
3848                mCurHintTextColor = color;
3849                if (mText.length() == 0) {
3850                    inval = true;
3851                }
3852            }
3853        }
3854        if (inval) {
3855            // Text needs to be redrawn with the new color
3856            if (mEditor != null) mEditor.invalidateTextDisplayList();
3857            invalidate();
3858        }
3859    }
3860
3861    @Override
3862    protected void drawableStateChanged() {
3863        super.drawableStateChanged();
3864        if (mTextColor != null && mTextColor.isStateful()
3865                || (mHintTextColor != null && mHintTextColor.isStateful())
3866                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
3867            updateTextColors();
3868        }
3869
3870        if (mDrawables != null) {
3871            final int[] state = getDrawableState();
3872            for (Drawable dr : mDrawables.mShowing) {
3873                if (dr != null && dr.isStateful()) {
3874                    dr.setState(state);
3875                }
3876            }
3877        }
3878    }
3879
3880    @Override
3881    public void drawableHotspotChanged(float x, float y) {
3882        super.drawableHotspotChanged(x, y);
3883
3884        if (mDrawables != null) {
3885            final int[] state = getDrawableState();
3886            for (Drawable dr : mDrawables.mShowing) {
3887                if (dr != null && dr.isStateful()) {
3888                    dr.setHotspot(x, y);
3889                }
3890            }
3891        }
3892    }
3893
3894    @Override
3895    public Parcelable onSaveInstanceState() {
3896        Parcelable superState = super.onSaveInstanceState();
3897
3898        // Save state if we are forced to
3899        boolean save = mFreezesText;
3900        int start = 0;
3901        int end = 0;
3902
3903        if (mText != null) {
3904            start = getSelectionStart();
3905            end = getSelectionEnd();
3906            if (start >= 0 || end >= 0) {
3907                // Or save state if there is a selection
3908                save = true;
3909            }
3910        }
3911
3912        if (save) {
3913            SavedState ss = new SavedState(superState);
3914            // XXX Should also save the current scroll position!
3915            ss.selStart = start;
3916            ss.selEnd = end;
3917
3918            if (mText instanceof Spanned) {
3919                Spannable sp = new SpannableStringBuilder(mText);
3920
3921                if (mEditor != null) {
3922                    removeMisspelledSpans(sp);
3923                    sp.removeSpan(mEditor.mSuggestionRangeSpan);
3924                }
3925
3926                ss.text = sp;
3927            } else {
3928                ss.text = mText.toString();
3929            }
3930
3931            if (isFocused() && start >= 0 && end >= 0) {
3932                ss.frozenWithFocus = true;
3933            }
3934
3935            ss.error = getError();
3936
3937            if (mEditor != null) {
3938                ss.editorState = mEditor.saveInstanceState();
3939            }
3940            return ss;
3941        }
3942
3943        return superState;
3944    }
3945
3946    void removeMisspelledSpans(Spannable spannable) {
3947        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
3948                SuggestionSpan.class);
3949        for (int i = 0; i < suggestionSpans.length; i++) {
3950            int flags = suggestionSpans[i].getFlags();
3951            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
3952                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
3953                spannable.removeSpan(suggestionSpans[i]);
3954            }
3955        }
3956    }
3957
3958    @Override
3959    public void onRestoreInstanceState(Parcelable state) {
3960        if (!(state instanceof SavedState)) {
3961            super.onRestoreInstanceState(state);
3962            return;
3963        }
3964
3965        SavedState ss = (SavedState)state;
3966        super.onRestoreInstanceState(ss.getSuperState());
3967
3968        // XXX restore buffer type too, as well as lots of other stuff
3969        if (ss.text != null) {
3970            setText(ss.text);
3971        }
3972
3973        if (ss.selStart >= 0 && ss.selEnd >= 0) {
3974            if (mText instanceof Spannable) {
3975                int len = mText.length();
3976
3977                if (ss.selStart > len || ss.selEnd > len) {
3978                    String restored = "";
3979
3980                    if (ss.text != null) {
3981                        restored = "(restored) ";
3982                    }
3983
3984                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
3985                          "/" + ss.selEnd + " out of range for " + restored +
3986                          "text " + mText);
3987                } else {
3988                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
3989
3990                    if (ss.frozenWithFocus) {
3991                        createEditorIfNeeded();
3992                        mEditor.mFrozenWithFocus = true;
3993                    }
3994                }
3995            }
3996        }
3997
3998        if (ss.error != null) {
3999            final CharSequence error = ss.error;
4000            // Display the error later, after the first layout pass
4001            post(new Runnable() {
4002                public void run() {
4003                    if (mEditor == null || !mEditor.mErrorWasChanged) {
4004                        setError(error);
4005                    }
4006                }
4007            });
4008        }
4009
4010        if (ss.editorState != null) {
4011            createEditorIfNeeded();
4012            mEditor.restoreInstanceState(ss.editorState);
4013        }
4014    }
4015
4016    /**
4017     * Control whether this text view saves its entire text contents when
4018     * freezing to an icicle, in addition to dynamic state such as cursor
4019     * position.  By default this is false, not saving the text.  Set to true
4020     * if the text in the text view is not being saved somewhere else in
4021     * persistent storage (such as in a content provider) so that if the
4022     * view is later thawed the user will not lose their data.
4023     *
4024     * @param freezesText Controls whether a frozen icicle should include the
4025     * entire text data: true to include it, false to not.
4026     *
4027     * @attr ref android.R.styleable#TextView_freezesText
4028     */
4029    @android.view.RemotableViewMethod
4030    public void setFreezesText(boolean freezesText) {
4031        mFreezesText = freezesText;
4032    }
4033
4034    /**
4035     * Return whether this text view is including its entire text contents
4036     * in frozen icicles.
4037     *
4038     * @return Returns true if text is included, false if it isn't.
4039     *
4040     * @see #setFreezesText
4041     */
4042    public boolean getFreezesText() {
4043        return mFreezesText;
4044    }
4045
4046    ///////////////////////////////////////////////////////////////////////////
4047
4048    /**
4049     * Sets the Factory used to create new Editables.
4050     */
4051    public final void setEditableFactory(Editable.Factory factory) {
4052        mEditableFactory = factory;
4053        setText(mText);
4054    }
4055
4056    /**
4057     * Sets the Factory used to create new Spannables.
4058     */
4059    public final void setSpannableFactory(Spannable.Factory factory) {
4060        mSpannableFactory = factory;
4061        setText(mText);
4062    }
4063
4064    /**
4065     * Sets the string value of the TextView. TextView <em>does not</em> accept
4066     * HTML-like formatting, which you can do with text strings in XML resource files.
4067     * To style your strings, attach android.text.style.* objects to a
4068     * {@link android.text.SpannableString SpannableString}, or see the
4069     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
4070     * Available Resource Types</a> documentation for an example of setting
4071     * formatted text in the XML resource file.
4072     *
4073     * @attr ref android.R.styleable#TextView_text
4074     */
4075    @android.view.RemotableViewMethod
4076    public final void setText(CharSequence text) {
4077        setText(text, mBufferType);
4078    }
4079
4080    /**
4081     * Like {@link #setText(CharSequence)},
4082     * except that the cursor position (if any) is retained in the new text.
4083     *
4084     * @param text The new text to place in the text view.
4085     *
4086     * @see #setText(CharSequence)
4087     */
4088    @android.view.RemotableViewMethod
4089    public final void setTextKeepState(CharSequence text) {
4090        setTextKeepState(text, mBufferType);
4091    }
4092
4093    /**
4094     * Sets the text that this TextView is to display (see
4095     * {@link #setText(CharSequence)}) and also sets whether it is stored
4096     * in a styleable/spannable buffer and whether it is editable.
4097     *
4098     * @attr ref android.R.styleable#TextView_text
4099     * @attr ref android.R.styleable#TextView_bufferType
4100     */
4101    public void setText(CharSequence text, BufferType type) {
4102        setText(text, type, true, 0);
4103
4104        if (mCharWrapper != null) {
4105            mCharWrapper.mChars = null;
4106        }
4107    }
4108
4109    private void setText(CharSequence text, BufferType type,
4110                         boolean notifyBefore, int oldlen) {
4111        if (text == null) {
4112            text = "";
4113        }
4114
4115        // If suggestions are not enabled, remove the suggestion spans from the text
4116        if (!isSuggestionsEnabled()) {
4117            text = removeSuggestionSpans(text);
4118        }
4119
4120        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
4121
4122        if (text instanceof Spanned &&
4123            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
4124            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
4125                setHorizontalFadingEdgeEnabled(true);
4126                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
4127            } else {
4128                setHorizontalFadingEdgeEnabled(false);
4129                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
4130            }
4131            setEllipsize(TextUtils.TruncateAt.MARQUEE);
4132        }
4133
4134        int n = mFilters.length;
4135        for (int i = 0; i < n; i++) {
4136            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
4137            if (out != null) {
4138                text = out;
4139            }
4140        }
4141
4142        if (notifyBefore) {
4143            if (mText != null) {
4144                oldlen = mText.length();
4145                sendBeforeTextChanged(mText, 0, oldlen, text.length());
4146            } else {
4147                sendBeforeTextChanged("", 0, 0, text.length());
4148            }
4149        }
4150
4151        boolean needEditableForNotification = false;
4152
4153        if (mListeners != null && mListeners.size() != 0) {
4154            needEditableForNotification = true;
4155        }
4156
4157        if (type == BufferType.EDITABLE || getKeyListener() != null ||
4158                needEditableForNotification) {
4159            createEditorIfNeeded();
4160            mEditor.forgetUndoRedo();
4161            Editable t = mEditableFactory.newEditable(text);
4162            text = t;
4163            setFilters(t, mFilters);
4164            InputMethodManager imm = InputMethodManager.peekInstance();
4165            if (imm != null) imm.restartInput(this);
4166        } else if (type == BufferType.SPANNABLE || mMovement != null) {
4167            text = mSpannableFactory.newSpannable(text);
4168        } else if (!(text instanceof CharWrapper)) {
4169            text = TextUtils.stringOrSpannedString(text);
4170        }
4171
4172        if (mAutoLinkMask != 0) {
4173            Spannable s2;
4174
4175            if (type == BufferType.EDITABLE || text instanceof Spannable) {
4176                s2 = (Spannable) text;
4177            } else {
4178                s2 = mSpannableFactory.newSpannable(text);
4179            }
4180
4181            if (Linkify.addLinks(s2, mAutoLinkMask)) {
4182                text = s2;
4183                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
4184
4185                /*
4186                 * We must go ahead and set the text before changing the
4187                 * movement method, because setMovementMethod() may call
4188                 * setText() again to try to upgrade the buffer type.
4189                 */
4190                mText = text;
4191
4192                // Do not change the movement method for text that support text selection as it
4193                // would prevent an arbitrary cursor displacement.
4194                if (mLinksClickable && !textCanBeSelected()) {
4195                    setMovementMethod(LinkMovementMethod.getInstance());
4196                }
4197            }
4198        }
4199
4200        mBufferType = type;
4201        mText = text;
4202
4203        if (mTransformation == null) {
4204            mTransformed = text;
4205        } else {
4206            mTransformed = mTransformation.getTransformation(text, this);
4207        }
4208
4209        final int textLength = text.length();
4210
4211        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
4212            Spannable sp = (Spannable) text;
4213
4214            // Remove any ChangeWatchers that might have come from other TextViews.
4215            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
4216            final int count = watchers.length;
4217            for (int i = 0; i < count; i++) {
4218                sp.removeSpan(watchers[i]);
4219            }
4220
4221            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
4222
4223            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
4224                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
4225
4226            if (mEditor != null) mEditor.addSpanWatchers(sp);
4227
4228            if (mTransformation != null) {
4229                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
4230            }
4231
4232            if (mMovement != null) {
4233                mMovement.initialize(this, (Spannable) text);
4234
4235                /*
4236                 * Initializing the movement method will have set the
4237                 * selection, so reset mSelectionMoved to keep that from
4238                 * interfering with the normal on-focus selection-setting.
4239                 */
4240                if (mEditor != null) mEditor.mSelectionMoved = false;
4241            }
4242        }
4243
4244        if (mLayout != null) {
4245            checkForRelayout();
4246        }
4247
4248        sendOnTextChanged(text, 0, oldlen, textLength);
4249        onTextChanged(text, 0, oldlen, textLength);
4250
4251        notifyViewAccessibilityStateChangedIfNeeded(AccessibilityEvent.CONTENT_CHANGE_TYPE_TEXT);
4252
4253        if (needEditableForNotification) {
4254            sendAfterTextChanged((Editable) text);
4255        }
4256
4257        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
4258        if (mEditor != null) mEditor.prepareCursorControllers();
4259    }
4260
4261    /**
4262     * Sets the TextView to display the specified slice of the specified
4263     * char array.  You must promise that you will not change the contents
4264     * of the array except for right before another call to setText(),
4265     * since the TextView has no way to know that the text
4266     * has changed and that it needs to invalidate and re-layout.
4267     */
4268    public final void setText(char[] text, int start, int len) {
4269        int oldlen = 0;
4270
4271        if (start < 0 || len < 0 || start + len > text.length) {
4272            throw new IndexOutOfBoundsException(start + ", " + len);
4273        }
4274
4275        /*
4276         * We must do the before-notification here ourselves because if
4277         * the old text is a CharWrapper we destroy it before calling
4278         * into the normal path.
4279         */
4280        if (mText != null) {
4281            oldlen = mText.length();
4282            sendBeforeTextChanged(mText, 0, oldlen, len);
4283        } else {
4284            sendBeforeTextChanged("", 0, 0, len);
4285        }
4286
4287        if (mCharWrapper == null) {
4288            mCharWrapper = new CharWrapper(text, start, len);
4289        } else {
4290            mCharWrapper.set(text, start, len);
4291        }
4292
4293        setText(mCharWrapper, mBufferType, false, oldlen);
4294    }
4295
4296    /**
4297     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
4298     * except that the cursor position (if any) is retained in the new text.
4299     *
4300     * @see #setText(CharSequence, android.widget.TextView.BufferType)
4301     */
4302    public final void setTextKeepState(CharSequence text, BufferType type) {
4303        int start = getSelectionStart();
4304        int end = getSelectionEnd();
4305        int len = text.length();
4306
4307        setText(text, type);
4308
4309        if (start >= 0 || end >= 0) {
4310            if (mText instanceof Spannable) {
4311                Selection.setSelection((Spannable) mText,
4312                                       Math.max(0, Math.min(start, len)),
4313                                       Math.max(0, Math.min(end, len)));
4314            }
4315        }
4316    }
4317
4318    @android.view.RemotableViewMethod
4319    public final void setText(@StringRes int resid) {
4320        setText(getContext().getResources().getText(resid));
4321    }
4322
4323    public final void setText(@StringRes int resid, BufferType type) {
4324        setText(getContext().getResources().getText(resid), type);
4325    }
4326
4327    /**
4328     * Sets the text to be displayed when the text of the TextView is empty.
4329     * Null means to use the normal empty text. The hint does not currently
4330     * participate in determining the size of the view.
4331     *
4332     * @attr ref android.R.styleable#TextView_hint
4333     */
4334    @android.view.RemotableViewMethod
4335    public final void setHint(CharSequence hint) {
4336        mHint = TextUtils.stringOrSpannedString(hint);
4337
4338        if (mLayout != null) {
4339            checkForRelayout();
4340        }
4341
4342        if (mText.length() == 0) {
4343            invalidate();
4344        }
4345
4346        // Invalidate display list if hint is currently used
4347        if (mEditor != null && mText.length() == 0 && mHint != null) {
4348            mEditor.invalidateTextDisplayList();
4349        }
4350    }
4351
4352    /**
4353     * Sets the text to be displayed when the text of the TextView is empty,
4354     * from a resource.
4355     *
4356     * @attr ref android.R.styleable#TextView_hint
4357     */
4358    @android.view.RemotableViewMethod
4359    public final void setHint(@StringRes int resid) {
4360        setHint(getContext().getResources().getText(resid));
4361    }
4362
4363    /**
4364     * Returns the hint that is displayed when the text of the TextView
4365     * is empty.
4366     *
4367     * @attr ref android.R.styleable#TextView_hint
4368     */
4369    @ViewDebug.CapturedViewProperty
4370    public CharSequence getHint() {
4371        return mHint;
4372    }
4373
4374    boolean isSingleLine() {
4375        return mSingleLine;
4376    }
4377
4378    private static boolean isMultilineInputType(int type) {
4379        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
4380            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
4381    }
4382
4383    /**
4384     * Removes the suggestion spans.
4385     */
4386    CharSequence removeSuggestionSpans(CharSequence text) {
4387       if (text instanceof Spanned) {
4388           Spannable spannable;
4389           if (text instanceof Spannable) {
4390               spannable = (Spannable) text;
4391           } else {
4392               spannable = new SpannableString(text);
4393               text = spannable;
4394           }
4395
4396           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
4397           for (int i = 0; i < spans.length; i++) {
4398               spannable.removeSpan(spans[i]);
4399           }
4400       }
4401       return text;
4402    }
4403
4404    /**
4405     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
4406     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
4407     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
4408     * then a soft keyboard will not be displayed for this text view.
4409     *
4410     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
4411     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
4412     * type.
4413     *
4414     * @see #getInputType()
4415     * @see #setRawInputType(int)
4416     * @see android.text.InputType
4417     * @attr ref android.R.styleable#TextView_inputType
4418     */
4419    public void setInputType(int type) {
4420        final boolean wasPassword = isPasswordInputType(getInputType());
4421        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
4422        setInputType(type, false);
4423        final boolean isPassword = isPasswordInputType(type);
4424        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
4425        boolean forceUpdate = false;
4426        if (isPassword) {
4427            setTransformationMethod(PasswordTransformationMethod.getInstance());
4428            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4429        } else if (isVisiblePassword) {
4430            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4431                forceUpdate = true;
4432            }
4433            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4434        } else if (wasPassword || wasVisiblePassword) {
4435            // not in password mode, clean up typeface and transformation
4436            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
4437            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4438                forceUpdate = true;
4439            }
4440        }
4441
4442        boolean singleLine = !isMultilineInputType(type);
4443
4444        // We need to update the single line mode if it has changed or we
4445        // were previously in password mode.
4446        if (mSingleLine != singleLine || forceUpdate) {
4447            // Change single line mode, but only change the transformation if
4448            // we are not in password mode.
4449            applySingleLine(singleLine, !isPassword, true);
4450        }
4451
4452        if (!isSuggestionsEnabled()) {
4453            mText = removeSuggestionSpans(mText);
4454        }
4455
4456        InputMethodManager imm = InputMethodManager.peekInstance();
4457        if (imm != null) imm.restartInput(this);
4458    }
4459
4460    /**
4461     * It would be better to rely on the input type for everything. A password inputType should have
4462     * a password transformation. We should hence use isPasswordInputType instead of this method.
4463     *
4464     * We should:
4465     * - Call setInputType in setKeyListener instead of changing the input type directly (which
4466     * would install the correct transformation).
4467     * - Refuse the installation of a non-password transformation in setTransformation if the input
4468     * type is password.
4469     *
4470     * However, this is like this for legacy reasons and we cannot break existing apps. This method
4471     * is useful since it matches what the user can see (obfuscated text or not).
4472     *
4473     * @return true if the current transformation method is of the password type.
4474     */
4475    private boolean hasPasswordTransformationMethod() {
4476        return mTransformation instanceof PasswordTransformationMethod;
4477    }
4478
4479    private static boolean isPasswordInputType(int inputType) {
4480        final int variation =
4481                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4482        return variation
4483                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
4484                || variation
4485                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
4486                || variation
4487                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
4488    }
4489
4490    private static boolean isVisiblePasswordInputType(int inputType) {
4491        final int variation =
4492                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4493        return variation
4494                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
4495    }
4496
4497    /**
4498     * Directly change the content type integer of the text view, without
4499     * modifying any other state.
4500     * @see #setInputType(int)
4501     * @see android.text.InputType
4502     * @attr ref android.R.styleable#TextView_inputType
4503     */
4504    public void setRawInputType(int type) {
4505        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
4506        createEditorIfNeeded();
4507        mEditor.mInputType = type;
4508    }
4509
4510    private void setInputType(int type, boolean direct) {
4511        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
4512        KeyListener input;
4513        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
4514            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
4515            TextKeyListener.Capitalize cap;
4516            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
4517                cap = TextKeyListener.Capitalize.CHARACTERS;
4518            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
4519                cap = TextKeyListener.Capitalize.WORDS;
4520            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
4521                cap = TextKeyListener.Capitalize.SENTENCES;
4522            } else {
4523                cap = TextKeyListener.Capitalize.NONE;
4524            }
4525            input = TextKeyListener.getInstance(autotext, cap);
4526        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
4527            input = DigitsKeyListener.getInstance(
4528                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
4529                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
4530        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
4531            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
4532                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
4533                    input = DateKeyListener.getInstance();
4534                    break;
4535                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
4536                    input = TimeKeyListener.getInstance();
4537                    break;
4538                default:
4539                    input = DateTimeKeyListener.getInstance();
4540                    break;
4541            }
4542        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
4543            input = DialerKeyListener.getInstance();
4544        } else {
4545            input = TextKeyListener.getInstance();
4546        }
4547        setRawInputType(type);
4548        if (direct) {
4549            createEditorIfNeeded();
4550            mEditor.mKeyListener = input;
4551        } else {
4552            setKeyListenerOnly(input);
4553        }
4554    }
4555
4556    /**
4557     * Get the type of the editable content.
4558     *
4559     * @see #setInputType(int)
4560     * @see android.text.InputType
4561     */
4562    public int getInputType() {
4563        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
4564    }
4565
4566    /**
4567     * Change the editor type integer associated with the text view, which
4568     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
4569     * has focus.
4570     * @see #getImeOptions
4571     * @see android.view.inputmethod.EditorInfo
4572     * @attr ref android.R.styleable#TextView_imeOptions
4573     */
4574    public void setImeOptions(int imeOptions) {
4575        createEditorIfNeeded();
4576        mEditor.createInputContentTypeIfNeeded();
4577        mEditor.mInputContentType.imeOptions = imeOptions;
4578    }
4579
4580    /**
4581     * Get the type of the IME editor.
4582     *
4583     * @see #setImeOptions(int)
4584     * @see android.view.inputmethod.EditorInfo
4585     */
4586    public int getImeOptions() {
4587        return mEditor != null && mEditor.mInputContentType != null
4588                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
4589    }
4590
4591    /**
4592     * Change the custom IME action associated with the text view, which
4593     * will be reported to an IME with {@link EditorInfo#actionLabel}
4594     * and {@link EditorInfo#actionId} when it has focus.
4595     * @see #getImeActionLabel
4596     * @see #getImeActionId
4597     * @see android.view.inputmethod.EditorInfo
4598     * @attr ref android.R.styleable#TextView_imeActionLabel
4599     * @attr ref android.R.styleable#TextView_imeActionId
4600     */
4601    public void setImeActionLabel(CharSequence label, int actionId) {
4602        createEditorIfNeeded();
4603        mEditor.createInputContentTypeIfNeeded();
4604        mEditor.mInputContentType.imeActionLabel = label;
4605        mEditor.mInputContentType.imeActionId = actionId;
4606    }
4607
4608    /**
4609     * Get the IME action label previous set with {@link #setImeActionLabel}.
4610     *
4611     * @see #setImeActionLabel
4612     * @see android.view.inputmethod.EditorInfo
4613     */
4614    public CharSequence getImeActionLabel() {
4615        return mEditor != null && mEditor.mInputContentType != null
4616                ? mEditor.mInputContentType.imeActionLabel : null;
4617    }
4618
4619    /**
4620     * Get the IME action ID previous set with {@link #setImeActionLabel}.
4621     *
4622     * @see #setImeActionLabel
4623     * @see android.view.inputmethod.EditorInfo
4624     */
4625    public int getImeActionId() {
4626        return mEditor != null && mEditor.mInputContentType != null
4627                ? mEditor.mInputContentType.imeActionId : 0;
4628    }
4629
4630    /**
4631     * Set a special listener to be called when an action is performed
4632     * on the text view.  This will be called when the enter key is pressed,
4633     * or when an action supplied to the IME is selected by the user.  Setting
4634     * this means that the normal hard key event will not insert a newline
4635     * into the text view, even if it is multi-line; holding down the ALT
4636     * modifier will, however, allow the user to insert a newline character.
4637     */
4638    public void setOnEditorActionListener(OnEditorActionListener l) {
4639        createEditorIfNeeded();
4640        mEditor.createInputContentTypeIfNeeded();
4641        mEditor.mInputContentType.onEditorActionListener = l;
4642    }
4643
4644    /**
4645     * Called when an attached input method calls
4646     * {@link InputConnection#performEditorAction(int)
4647     * InputConnection.performEditorAction()}
4648     * for this text view.  The default implementation will call your action
4649     * listener supplied to {@link #setOnEditorActionListener}, or perform
4650     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
4651     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
4652     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
4653     * EditorInfo.IME_ACTION_DONE}.
4654     *
4655     * <p>For backwards compatibility, if no IME options have been set and the
4656     * text view would not normally advance focus on enter, then
4657     * the NEXT and DONE actions received here will be turned into an enter
4658     * key down/up pair to go through the normal key handling.
4659     *
4660     * @param actionCode The code of the action being performed.
4661     *
4662     * @see #setOnEditorActionListener
4663     */
4664    public void onEditorAction(int actionCode) {
4665        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
4666        if (ict != null) {
4667            if (ict.onEditorActionListener != null) {
4668                if (ict.onEditorActionListener.onEditorAction(this,
4669                        actionCode, null)) {
4670                    return;
4671                }
4672            }
4673
4674            // This is the handling for some default action.
4675            // Note that for backwards compatibility we don't do this
4676            // default handling if explicit ime options have not been given,
4677            // instead turning this into the normal enter key codes that an
4678            // app may be expecting.
4679            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
4680                View v = focusSearch(FOCUS_FORWARD);
4681                if (v != null) {
4682                    if (!v.requestFocus(FOCUS_FORWARD)) {
4683                        throw new IllegalStateException("focus search returned a view " +
4684                                "that wasn't able to take focus!");
4685                    }
4686                }
4687                return;
4688
4689            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4690                View v = focusSearch(FOCUS_BACKWARD);
4691                if (v != null) {
4692                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4693                        throw new IllegalStateException("focus search returned a view " +
4694                                "that wasn't able to take focus!");
4695                    }
4696                }
4697                return;
4698
4699            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4700                InputMethodManager imm = InputMethodManager.peekInstance();
4701                if (imm != null && imm.isActive(this)) {
4702                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4703                }
4704                return;
4705            }
4706        }
4707
4708        ViewRootImpl viewRootImpl = getViewRootImpl();
4709        if (viewRootImpl != null) {
4710            long eventTime = SystemClock.uptimeMillis();
4711            viewRootImpl.dispatchKeyFromIme(
4712                    new KeyEvent(eventTime, eventTime,
4713                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4714                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4715                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4716                    | KeyEvent.FLAG_EDITOR_ACTION));
4717            viewRootImpl.dispatchKeyFromIme(
4718                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4719                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4720                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4721                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4722                    | KeyEvent.FLAG_EDITOR_ACTION));
4723        }
4724    }
4725
4726    /**
4727     * Set the private content type of the text, which is the
4728     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4729     * field that will be filled in when creating an input connection.
4730     *
4731     * @see #getPrivateImeOptions()
4732     * @see EditorInfo#privateImeOptions
4733     * @attr ref android.R.styleable#TextView_privateImeOptions
4734     */
4735    public void setPrivateImeOptions(String type) {
4736        createEditorIfNeeded();
4737        mEditor.createInputContentTypeIfNeeded();
4738        mEditor.mInputContentType.privateImeOptions = type;
4739    }
4740
4741    /**
4742     * Get the private type of the content.
4743     *
4744     * @see #setPrivateImeOptions(String)
4745     * @see EditorInfo#privateImeOptions
4746     */
4747    public String getPrivateImeOptions() {
4748        return mEditor != null && mEditor.mInputContentType != null
4749                ? mEditor.mInputContentType.privateImeOptions : null;
4750    }
4751
4752    /**
4753     * Set the extra input data of the text, which is the
4754     * {@link EditorInfo#extras TextBoxAttribute.extras}
4755     * Bundle that will be filled in when creating an input connection.  The
4756     * given integer is the resource ID of an XML resource holding an
4757     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4758     *
4759     * @see #getInputExtras(boolean)
4760     * @see EditorInfo#extras
4761     * @attr ref android.R.styleable#TextView_editorExtras
4762     */
4763    public void setInputExtras(@XmlRes int xmlResId) throws XmlPullParserException, IOException {
4764        createEditorIfNeeded();
4765        XmlResourceParser parser = getResources().getXml(xmlResId);
4766        mEditor.createInputContentTypeIfNeeded();
4767        mEditor.mInputContentType.extras = new Bundle();
4768        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4769    }
4770
4771    /**
4772     * Retrieve the input extras currently associated with the text view, which
4773     * can be viewed as well as modified.
4774     *
4775     * @param create If true, the extras will be created if they don't already
4776     * exist.  Otherwise, null will be returned if none have been created.
4777     * @see #setInputExtras(int)
4778     * @see EditorInfo#extras
4779     * @attr ref android.R.styleable#TextView_editorExtras
4780     */
4781    public Bundle getInputExtras(boolean create) {
4782        if (mEditor == null && !create) return null;
4783        createEditorIfNeeded();
4784        if (mEditor.mInputContentType == null) {
4785            if (!create) return null;
4786            mEditor.createInputContentTypeIfNeeded();
4787        }
4788        if (mEditor.mInputContentType.extras == null) {
4789            if (!create) return null;
4790            mEditor.mInputContentType.extras = new Bundle();
4791        }
4792        return mEditor.mInputContentType.extras;
4793    }
4794
4795    /**
4796     * Returns the error message that was set to be displayed with
4797     * {@link #setError}, or <code>null</code> if no error was set
4798     * or if it the error was cleared by the widget after user input.
4799     */
4800    public CharSequence getError() {
4801        return mEditor == null ? null : mEditor.mError;
4802    }
4803
4804    /**
4805     * Sets the right-hand compound drawable of the TextView to the "error"
4806     * icon and sets an error message that will be displayed in a popup when
4807     * the TextView has focus.  The icon and error message will be reset to
4808     * null when any key events cause changes to the TextView's text.  If the
4809     * <code>error</code> is <code>null</code>, the error message and icon
4810     * will be cleared.
4811     */
4812    @android.view.RemotableViewMethod
4813    public void setError(CharSequence error) {
4814        if (error == null) {
4815            setError(null, null);
4816        } else {
4817            Drawable dr = getContext().getDrawable(
4818                    com.android.internal.R.drawable.indicator_input_error);
4819
4820            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
4821            setError(error, dr);
4822        }
4823    }
4824
4825    /**
4826     * Sets the right-hand compound drawable of the TextView to the specified
4827     * icon and sets an error message that will be displayed in a popup when
4828     * the TextView has focus.  The icon and error message will be reset to
4829     * null when any key events cause changes to the TextView's text.  The
4830     * drawable must already have had {@link Drawable#setBounds} set on it.
4831     * If the <code>error</code> is <code>null</code>, the error message will
4832     * be cleared (and you should provide a <code>null</code> icon as well).
4833     */
4834    public void setError(CharSequence error, Drawable icon) {
4835        createEditorIfNeeded();
4836        mEditor.setError(error, icon);
4837        notifyViewAccessibilityStateChangedIfNeeded(
4838                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
4839    }
4840
4841    @Override
4842    protected boolean setFrame(int l, int t, int r, int b) {
4843        boolean result = super.setFrame(l, t, r, b);
4844
4845        if (mEditor != null) mEditor.setFrame();
4846
4847        restartMarqueeIfNeeded();
4848
4849        return result;
4850    }
4851
4852    private void restartMarqueeIfNeeded() {
4853        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4854            mRestartMarquee = false;
4855            startMarquee();
4856        }
4857    }
4858
4859    /**
4860     * Sets the list of input filters that will be used if the buffer is
4861     * Editable. Has no effect otherwise.
4862     *
4863     * @attr ref android.R.styleable#TextView_maxLength
4864     */
4865    public void setFilters(InputFilter[] filters) {
4866        if (filters == null) {
4867            throw new IllegalArgumentException();
4868        }
4869
4870        mFilters = filters;
4871
4872        if (mText instanceof Editable) {
4873            setFilters((Editable) mText, filters);
4874        }
4875    }
4876
4877    /**
4878     * Sets the list of input filters on the specified Editable,
4879     * and includes mInput in the list if it is an InputFilter.
4880     */
4881    private void setFilters(Editable e, InputFilter[] filters) {
4882        if (mEditor != null) {
4883            final boolean undoFilter = mEditor.mUndoInputFilter != null;
4884            final boolean keyFilter = mEditor.mKeyListener instanceof InputFilter;
4885            int num = 0;
4886            if (undoFilter) num++;
4887            if (keyFilter) num++;
4888            if (num > 0) {
4889                InputFilter[] nf = new InputFilter[filters.length + num];
4890
4891                System.arraycopy(filters, 0, nf, 0, filters.length);
4892                num = 0;
4893                if (undoFilter) {
4894                    nf[filters.length] = mEditor.mUndoInputFilter;
4895                    num++;
4896                }
4897                if (keyFilter) {
4898                    nf[filters.length + num] = (InputFilter) mEditor.mKeyListener;
4899                }
4900
4901                e.setFilters(nf);
4902                return;
4903            }
4904        }
4905        e.setFilters(filters);
4906    }
4907
4908    /**
4909     * Returns the current list of input filters.
4910     *
4911     * @attr ref android.R.styleable#TextView_maxLength
4912     */
4913    public InputFilter[] getFilters() {
4914        return mFilters;
4915    }
4916
4917    /////////////////////////////////////////////////////////////////////////
4918
4919    private int getBoxHeight(Layout l) {
4920        Insets opticalInsets = isLayoutModeOptical(mParent) ? getOpticalInsets() : Insets.NONE;
4921        int padding = (l == mHintLayout) ?
4922                getCompoundPaddingTop() + getCompoundPaddingBottom() :
4923                getExtendedPaddingTop() + getExtendedPaddingBottom();
4924        return getMeasuredHeight() - padding + opticalInsets.top + opticalInsets.bottom;
4925    }
4926
4927    int getVerticalOffset(boolean forceNormal) {
4928        int voffset = 0;
4929        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4930
4931        Layout l = mLayout;
4932        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4933            l = mHintLayout;
4934        }
4935
4936        if (gravity != Gravity.TOP) {
4937            int boxht = getBoxHeight(l);
4938            int textht = l.getHeight();
4939
4940            if (textht < boxht) {
4941                if (gravity == Gravity.BOTTOM)
4942                    voffset = boxht - textht;
4943                else // (gravity == Gravity.CENTER_VERTICAL)
4944                    voffset = (boxht - textht) >> 1;
4945            }
4946        }
4947        return voffset;
4948    }
4949
4950    private int getBottomVerticalOffset(boolean forceNormal) {
4951        int voffset = 0;
4952        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4953
4954        Layout l = mLayout;
4955        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4956            l = mHintLayout;
4957        }
4958
4959        if (gravity != Gravity.BOTTOM) {
4960            int boxht = getBoxHeight(l);
4961            int textht = l.getHeight();
4962
4963            if (textht < boxht) {
4964                if (gravity == Gravity.TOP)
4965                    voffset = boxht - textht;
4966                else // (gravity == Gravity.CENTER_VERTICAL)
4967                    voffset = (boxht - textht) >> 1;
4968            }
4969        }
4970        return voffset;
4971    }
4972
4973    void invalidateCursorPath() {
4974        if (mHighlightPathBogus) {
4975            invalidateCursor();
4976        } else {
4977            final int horizontalPadding = getCompoundPaddingLeft();
4978            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4979
4980            if (mEditor.mCursorCount == 0) {
4981                synchronized (TEMP_RECTF) {
4982                    /*
4983                     * The reason for this concern about the thickness of the
4984                     * cursor and doing the floor/ceil on the coordinates is that
4985                     * some EditTexts (notably textfields in the Browser) have
4986                     * anti-aliased text where not all the characters are
4987                     * necessarily at integer-multiple locations.  This should
4988                     * make sure the entire cursor gets invalidated instead of
4989                     * sometimes missing half a pixel.
4990                     */
4991                    float thick = (float) Math.ceil(mTextPaint.getStrokeWidth());
4992                    if (thick < 1.0f) {
4993                        thick = 1.0f;
4994                    }
4995
4996                    thick /= 2.0f;
4997
4998                    // mHighlightPath is guaranteed to be non null at that point.
4999                    mHighlightPath.computeBounds(TEMP_RECTF, false);
5000
5001                    invalidate((int) Math.floor(horizontalPadding + TEMP_RECTF.left - thick),
5002                            (int) Math.floor(verticalPadding + TEMP_RECTF.top - thick),
5003                            (int) Math.ceil(horizontalPadding + TEMP_RECTF.right + thick),
5004                            (int) Math.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
5005                }
5006            } else {
5007                for (int i = 0; i < mEditor.mCursorCount; i++) {
5008                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5009                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
5010                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
5011                }
5012            }
5013        }
5014    }
5015
5016    void invalidateCursor() {
5017        int where = getSelectionEnd();
5018
5019        invalidateCursor(where, where, where);
5020    }
5021
5022    private void invalidateCursor(int a, int b, int c) {
5023        if (a >= 0 || b >= 0 || c >= 0) {
5024            int start = Math.min(Math.min(a, b), c);
5025            int end = Math.max(Math.max(a, b), c);
5026            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
5027        }
5028    }
5029
5030    /**
5031     * Invalidates the region of text enclosed between the start and end text offsets.
5032     */
5033    void invalidateRegion(int start, int end, boolean invalidateCursor) {
5034        if (mLayout == null) {
5035            invalidate();
5036        } else {
5037                int lineStart = mLayout.getLineForOffset(start);
5038                int top = mLayout.getLineTop(lineStart);
5039
5040                // This is ridiculous, but the descent from the line above
5041                // can hang down into the line we really want to redraw,
5042                // so we have to invalidate part of the line above to make
5043                // sure everything that needs to be redrawn really is.
5044                // (But not the whole line above, because that would cause
5045                // the same problem with the descenders on the line above it!)
5046                if (lineStart > 0) {
5047                    top -= mLayout.getLineDescent(lineStart - 1);
5048                }
5049
5050                int lineEnd;
5051
5052                if (start == end)
5053                    lineEnd = lineStart;
5054                else
5055                    lineEnd = mLayout.getLineForOffset(end);
5056
5057                int bottom = mLayout.getLineBottom(lineEnd);
5058
5059                // mEditor can be null in case selection is set programmatically.
5060                if (invalidateCursor && mEditor != null) {
5061                    for (int i = 0; i < mEditor.mCursorCount; i++) {
5062                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5063                        top = Math.min(top, bounds.top);
5064                        bottom = Math.max(bottom, bounds.bottom);
5065                    }
5066                }
5067
5068                final int compoundPaddingLeft = getCompoundPaddingLeft();
5069                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5070
5071                int left, right;
5072                if (lineStart == lineEnd && !invalidateCursor) {
5073                    left = (int) mLayout.getPrimaryHorizontal(start);
5074                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
5075                    left += compoundPaddingLeft;
5076                    right += compoundPaddingLeft;
5077                } else {
5078                    // Rectangle bounding box when the region spans several lines
5079                    left = compoundPaddingLeft;
5080                    right = getWidth() - getCompoundPaddingRight();
5081                }
5082
5083                invalidate(mScrollX + left, verticalPadding + top,
5084                        mScrollX + right, verticalPadding + bottom);
5085        }
5086    }
5087
5088    private void registerForPreDraw() {
5089        if (!mPreDrawRegistered) {
5090            getViewTreeObserver().addOnPreDrawListener(this);
5091            mPreDrawRegistered = true;
5092        }
5093    }
5094
5095    private void unregisterForPreDraw() {
5096        getViewTreeObserver().removeOnPreDrawListener(this);
5097        mPreDrawRegistered = false;
5098        mPreDrawListenerDetached = false;
5099    }
5100
5101    /**
5102     * {@inheritDoc}
5103     */
5104    public boolean onPreDraw() {
5105        if (mLayout == null) {
5106            assumeLayout();
5107        }
5108
5109        if (mMovement != null) {
5110            /* This code also provides auto-scrolling when a cursor is moved using a
5111             * CursorController (insertion point or selection limits).
5112             * For selection, ensure start or end is visible depending on controller's state.
5113             */
5114            int curs = getSelectionEnd();
5115            // Do not create the controller if it is not already created.
5116            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
5117                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
5118                curs = getSelectionStart();
5119            }
5120
5121            /*
5122             * TODO: This should really only keep the end in view if
5123             * it already was before the text changed.  I'm not sure
5124             * of a good way to tell from here if it was.
5125             */
5126            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5127                curs = mText.length();
5128            }
5129
5130            if (curs >= 0) {
5131                bringPointIntoView(curs);
5132            }
5133        } else {
5134            bringTextIntoView();
5135        }
5136
5137        // This has to be checked here since:
5138        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
5139        //   a screen rotation) since layout is not yet initialized at that point.
5140        if (mEditor != null && mEditor.mCreatedWithASelection) {
5141            mEditor.startSelectionActionModeWithSelection();
5142            mEditor.mCreatedWithASelection = false;
5143        }
5144
5145        // Phone specific code (there is no ExtractEditText on tablets).
5146        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
5147        // not be set. Do the test here instead.
5148        if (this instanceof ExtractEditText && hasSelection() && mEditor != null) {
5149            mEditor.startSelectionActionModeWithSelection();
5150        }
5151
5152        unregisterForPreDraw();
5153
5154        return true;
5155    }
5156
5157    @Override
5158    protected void onAttachedToWindow() {
5159        super.onAttachedToWindow();
5160
5161        mTemporaryDetach = false;
5162
5163        if (mEditor != null) mEditor.onAttachedToWindow();
5164
5165        if (mPreDrawListenerDetached) {
5166            getViewTreeObserver().addOnPreDrawListener(this);
5167            mPreDrawListenerDetached = false;
5168        }
5169    }
5170
5171    /** @hide */
5172    @Override
5173    protected void onDetachedFromWindowInternal() {
5174        if (mPreDrawRegistered) {
5175            getViewTreeObserver().removeOnPreDrawListener(this);
5176            mPreDrawListenerDetached = true;
5177        }
5178
5179        resetResolvedDrawables();
5180
5181        if (mEditor != null) mEditor.onDetachedFromWindow();
5182
5183        super.onDetachedFromWindowInternal();
5184    }
5185
5186    @Override
5187    public void onScreenStateChanged(int screenState) {
5188        super.onScreenStateChanged(screenState);
5189        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
5190    }
5191
5192    @Override
5193    protected boolean isPaddingOffsetRequired() {
5194        return mShadowRadius != 0 || mDrawables != null;
5195    }
5196
5197    @Override
5198    protected int getLeftPaddingOffset() {
5199        return getCompoundPaddingLeft() - mPaddingLeft +
5200                (int) Math.min(0, mShadowDx - mShadowRadius);
5201    }
5202
5203    @Override
5204    protected int getTopPaddingOffset() {
5205        return (int) Math.min(0, mShadowDy - mShadowRadius);
5206    }
5207
5208    @Override
5209    protected int getBottomPaddingOffset() {
5210        return (int) Math.max(0, mShadowDy + mShadowRadius);
5211    }
5212
5213    private int getFudgedPaddingRight() {
5214        // Add sufficient space for cursor and tone marks
5215        int cursorWidth = 2 + (int)mTextPaint.density; // adequate for Material cursors
5216        return Math.max(0, getCompoundPaddingRight() - (cursorWidth - 1));
5217    }
5218
5219    @Override
5220    protected int getRightPaddingOffset() {
5221        return -(getFudgedPaddingRight() - mPaddingRight) +
5222                (int) Math.max(0, mShadowDx + mShadowRadius);
5223    }
5224
5225    @Override
5226    protected boolean verifyDrawable(Drawable who) {
5227        final boolean verified = super.verifyDrawable(who);
5228        if (!verified && mDrawables != null) {
5229            for (Drawable dr : mDrawables.mShowing) {
5230                if (who == dr) {
5231                    return true;
5232                }
5233            }
5234        }
5235        return verified;
5236    }
5237
5238    @Override
5239    public void jumpDrawablesToCurrentState() {
5240        super.jumpDrawablesToCurrentState();
5241        if (mDrawables != null) {
5242            for (Drawable dr : mDrawables.mShowing) {
5243                if (dr != null) {
5244                    dr.jumpToCurrentState();
5245                }
5246            }
5247        }
5248    }
5249
5250    @Override
5251    public void invalidateDrawable(Drawable drawable) {
5252        boolean handled = false;
5253
5254        if (verifyDrawable(drawable)) {
5255            final Rect dirty = drawable.getBounds();
5256            int scrollX = mScrollX;
5257            int scrollY = mScrollY;
5258
5259            // IMPORTANT: The coordinates below are based on the coordinates computed
5260            // for each compound drawable in onDraw(). Make sure to update each section
5261            // accordingly.
5262            final TextView.Drawables drawables = mDrawables;
5263            if (drawables != null) {
5264                if (drawable == drawables.mShowing[Drawables.LEFT]) {
5265                    final int compoundPaddingTop = getCompoundPaddingTop();
5266                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5267                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5268
5269                    scrollX += mPaddingLeft;
5270                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
5271                    handled = true;
5272                } else if (drawable == drawables.mShowing[Drawables.RIGHT]) {
5273                    final int compoundPaddingTop = getCompoundPaddingTop();
5274                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5275                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5276
5277                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
5278                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
5279                    handled = true;
5280                } else if (drawable == drawables.mShowing[Drawables.TOP]) {
5281                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5282                    final int compoundPaddingRight = getCompoundPaddingRight();
5283                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5284
5285                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
5286                    scrollY += mPaddingTop;
5287                    handled = true;
5288                } else if (drawable == drawables.mShowing[Drawables.BOTTOM]) {
5289                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5290                    final int compoundPaddingRight = getCompoundPaddingRight();
5291                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5292
5293                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
5294                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
5295                    handled = true;
5296                }
5297            }
5298
5299            if (handled) {
5300                invalidate(dirty.left + scrollX, dirty.top + scrollY,
5301                        dirty.right + scrollX, dirty.bottom + scrollY);
5302            }
5303        }
5304
5305        if (!handled) {
5306            super.invalidateDrawable(drawable);
5307        }
5308    }
5309
5310    @Override
5311    public boolean hasOverlappingRendering() {
5312        // horizontal fading edge causes SaveLayerAlpha, which doesn't support alpha modulation
5313        return ((getBackground() != null && getBackground().getCurrent() != null)
5314                || mText instanceof Spannable || hasSelection()
5315                || isHorizontalFadingEdgeEnabled());
5316    }
5317
5318    /**
5319     *
5320     * Returns the state of the {@code textIsSelectable} flag (See
5321     * {@link #setTextIsSelectable setTextIsSelectable()}). Although you have to set this flag
5322     * to allow users to select and copy text in a non-editable TextView, the content of an
5323     * {@link EditText} can always be selected, independently of the value of this flag.
5324     * <p>
5325     *
5326     * @return True if the text displayed in this TextView can be selected by the user.
5327     *
5328     * @attr ref android.R.styleable#TextView_textIsSelectable
5329     */
5330    public boolean isTextSelectable() {
5331        return mEditor == null ? false : mEditor.mTextIsSelectable;
5332    }
5333
5334    /**
5335     * Sets whether the content of this view is selectable by the user. The default is
5336     * {@code false}, meaning that the content is not selectable.
5337     * <p>
5338     * When you use a TextView to display a useful piece of information to the user (such as a
5339     * contact's address), make it selectable, so that the user can select and copy its
5340     * content. You can also use set the XML attribute
5341     * {@link android.R.styleable#TextView_textIsSelectable} to "true".
5342     * <p>
5343     * When you call this method to set the value of {@code textIsSelectable}, it sets
5344     * the flags {@code focusable}, {@code focusableInTouchMode}, {@code clickable},
5345     * and {@code longClickable} to the same value. These flags correspond to the attributes
5346     * {@link android.R.styleable#View_focusable android:focusable},
5347     * {@link android.R.styleable#View_focusableInTouchMode android:focusableInTouchMode},
5348     * {@link android.R.styleable#View_clickable android:clickable}, and
5349     * {@link android.R.styleable#View_longClickable android:longClickable}. To restore any of these
5350     * flags to a state you had set previously, call one or more of the following methods:
5351     * {@link #setFocusable(boolean) setFocusable()},
5352     * {@link #setFocusableInTouchMode(boolean) setFocusableInTouchMode()},
5353     * {@link #setClickable(boolean) setClickable()} or
5354     * {@link #setLongClickable(boolean) setLongClickable()}.
5355     *
5356     * @param selectable Whether the content of this TextView should be selectable.
5357     */
5358    public void setTextIsSelectable(boolean selectable) {
5359        if (!selectable && mEditor == null) return; // false is default value with no edit data
5360
5361        createEditorIfNeeded();
5362        if (mEditor.mTextIsSelectable == selectable) return;
5363
5364        mEditor.mTextIsSelectable = selectable;
5365        setFocusableInTouchMode(selectable);
5366        setFocusable(selectable);
5367        setClickable(selectable);
5368        setLongClickable(selectable);
5369
5370        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
5371
5372        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
5373        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
5374
5375        // Called by setText above, but safer in case of future code changes
5376        mEditor.prepareCursorControllers();
5377    }
5378
5379    @Override
5380    protected int[] onCreateDrawableState(int extraSpace) {
5381        final int[] drawableState;
5382
5383        if (mSingleLine) {
5384            drawableState = super.onCreateDrawableState(extraSpace);
5385        } else {
5386            drawableState = super.onCreateDrawableState(extraSpace + 1);
5387            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
5388        }
5389
5390        if (isTextSelectable()) {
5391            // Disable pressed state, which was introduced when TextView was made clickable.
5392            // Prevents text color change.
5393            // setClickable(false) would have a similar effect, but it also disables focus changes
5394            // and long press actions, which are both needed by text selection.
5395            final int length = drawableState.length;
5396            for (int i = 0; i < length; i++) {
5397                if (drawableState[i] == R.attr.state_pressed) {
5398                    final int[] nonPressedState = new int[length - 1];
5399                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
5400                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
5401                    return nonPressedState;
5402                }
5403            }
5404        }
5405
5406        return drawableState;
5407    }
5408
5409    private Path getUpdatedHighlightPath() {
5410        Path highlight = null;
5411        Paint highlightPaint = mHighlightPaint;
5412
5413        final int selStart = getSelectionStart();
5414        final int selEnd = getSelectionEnd();
5415        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
5416            if (selStart == selEnd) {
5417                if (mEditor != null && mEditor.isCursorVisible() &&
5418                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
5419                        (2 * Editor.BLINK) < Editor.BLINK) {
5420                    if (mHighlightPathBogus) {
5421                        if (mHighlightPath == null) mHighlightPath = new Path();
5422                        mHighlightPath.reset();
5423                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
5424                        mEditor.updateCursorsPositions();
5425                        mHighlightPathBogus = false;
5426                    }
5427
5428                    // XXX should pass to skin instead of drawing directly
5429                    highlightPaint.setColor(mCurTextColor);
5430                    highlightPaint.setStyle(Paint.Style.STROKE);
5431                    highlight = mHighlightPath;
5432                }
5433            } else {
5434                if (mHighlightPathBogus) {
5435                    if (mHighlightPath == null) mHighlightPath = new Path();
5436                    mHighlightPath.reset();
5437                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5438                    mHighlightPathBogus = false;
5439                }
5440
5441                // XXX should pass to skin instead of drawing directly
5442                highlightPaint.setColor(mHighlightColor);
5443                highlightPaint.setStyle(Paint.Style.FILL);
5444
5445                highlight = mHighlightPath;
5446            }
5447        }
5448        return highlight;
5449    }
5450
5451    /**
5452     * @hide
5453     */
5454    public int getHorizontalOffsetForDrawables() {
5455        return 0;
5456    }
5457
5458    @Override
5459    protected void onDraw(Canvas canvas) {
5460        restartMarqueeIfNeeded();
5461
5462        // Draw the background for this view
5463        super.onDraw(canvas);
5464
5465        final int compoundPaddingLeft = getCompoundPaddingLeft();
5466        final int compoundPaddingTop = getCompoundPaddingTop();
5467        final int compoundPaddingRight = getCompoundPaddingRight();
5468        final int compoundPaddingBottom = getCompoundPaddingBottom();
5469        final int scrollX = mScrollX;
5470        final int scrollY = mScrollY;
5471        final int right = mRight;
5472        final int left = mLeft;
5473        final int bottom = mBottom;
5474        final int top = mTop;
5475        final boolean isLayoutRtl = isLayoutRtl();
5476        final int offset = getHorizontalOffsetForDrawables();
5477        final int leftOffset = isLayoutRtl ? 0 : offset;
5478        final int rightOffset = isLayoutRtl ? offset : 0 ;
5479
5480        final Drawables dr = mDrawables;
5481        if (dr != null) {
5482            /*
5483             * Compound, not extended, because the icon is not clipped
5484             * if the text height is smaller.
5485             */
5486
5487            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
5488            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
5489
5490            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5491            // Make sure to update invalidateDrawable() when changing this code.
5492            if (dr.mShowing[Drawables.LEFT] != null) {
5493                canvas.save();
5494                canvas.translate(scrollX + mPaddingLeft + leftOffset,
5495                                 scrollY + compoundPaddingTop +
5496                                 (vspace - dr.mDrawableHeightLeft) / 2);
5497                dr.mShowing[Drawables.LEFT].draw(canvas);
5498                canvas.restore();
5499            }
5500
5501            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5502            // Make sure to update invalidateDrawable() when changing this code.
5503            if (dr.mShowing[Drawables.RIGHT] != null) {
5504                canvas.save();
5505                canvas.translate(scrollX + right - left - mPaddingRight
5506                        - dr.mDrawableSizeRight - rightOffset,
5507                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
5508                dr.mShowing[Drawables.RIGHT].draw(canvas);
5509                canvas.restore();
5510            }
5511
5512            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5513            // Make sure to update invalidateDrawable() when changing this code.
5514            if (dr.mShowing[Drawables.TOP] != null) {
5515                canvas.save();
5516                canvas.translate(scrollX + compoundPaddingLeft +
5517                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
5518                dr.mShowing[Drawables.TOP].draw(canvas);
5519                canvas.restore();
5520            }
5521
5522            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5523            // Make sure to update invalidateDrawable() when changing this code.
5524            if (dr.mShowing[Drawables.BOTTOM] != null) {
5525                canvas.save();
5526                canvas.translate(scrollX + compoundPaddingLeft +
5527                        (hspace - dr.mDrawableWidthBottom) / 2,
5528                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
5529                dr.mShowing[Drawables.BOTTOM].draw(canvas);
5530                canvas.restore();
5531            }
5532        }
5533
5534        int color = mCurTextColor;
5535
5536        if (mLayout == null) {
5537            assumeLayout();
5538        }
5539
5540        Layout layout = mLayout;
5541
5542        if (mHint != null && mText.length() == 0) {
5543            if (mHintTextColor != null) {
5544                color = mCurHintTextColor;
5545            }
5546
5547            layout = mHintLayout;
5548        }
5549
5550        mTextPaint.setColor(color);
5551        mTextPaint.drawableState = getDrawableState();
5552
5553        canvas.save();
5554        /*  Would be faster if we didn't have to do this. Can we chop the
5555            (displayable) text so that we don't need to do this ever?
5556        */
5557
5558        int extendedPaddingTop = getExtendedPaddingTop();
5559        int extendedPaddingBottom = getExtendedPaddingBottom();
5560
5561        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5562        final int maxScrollY = mLayout.getHeight() - vspace;
5563
5564        float clipLeft = compoundPaddingLeft + scrollX;
5565        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
5566        float clipRight = right - left - getFudgedPaddingRight() + scrollX;
5567        float clipBottom = bottom - top + scrollY -
5568                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
5569
5570        if (mShadowRadius != 0) {
5571            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
5572            clipRight += Math.max(0, mShadowDx + mShadowRadius);
5573
5574            clipTop += Math.min(0, mShadowDy - mShadowRadius);
5575            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
5576        }
5577
5578        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
5579
5580        int voffsetText = 0;
5581        int voffsetCursor = 0;
5582
5583        // translate in by our padding
5584        /* shortcircuit calling getVerticaOffset() */
5585        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5586            voffsetText = getVerticalOffset(false);
5587            voffsetCursor = getVerticalOffset(true);
5588        }
5589        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
5590
5591        final int layoutDirection = getLayoutDirection();
5592        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
5593        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
5594                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5595            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
5596                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
5597                final int width = mRight - mLeft;
5598                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
5599                final float dx = mLayout.getLineRight(0) - (width - padding);
5600                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5601            }
5602
5603            if (mMarquee != null && mMarquee.isRunning()) {
5604                final float dx = -mMarquee.getScroll();
5605                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5606            }
5607        }
5608
5609        final int cursorOffsetVertical = voffsetCursor - voffsetText;
5610
5611        Path highlight = getUpdatedHighlightPath();
5612        if (mEditor != null) {
5613            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
5614        } else {
5615            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5616        }
5617
5618        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
5619            final float dx = mMarquee.getGhostOffset();
5620            canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5621            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5622        }
5623
5624        canvas.restore();
5625    }
5626
5627    @Override
5628    public void getFocusedRect(Rect r) {
5629        if (mLayout == null) {
5630            super.getFocusedRect(r);
5631            return;
5632        }
5633
5634        int selEnd = getSelectionEnd();
5635        if (selEnd < 0) {
5636            super.getFocusedRect(r);
5637            return;
5638        }
5639
5640        int selStart = getSelectionStart();
5641        if (selStart < 0 || selStart >= selEnd) {
5642            int line = mLayout.getLineForOffset(selEnd);
5643            r.top = mLayout.getLineTop(line);
5644            r.bottom = mLayout.getLineBottom(line);
5645            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
5646            r.right = r.left + 4;
5647        } else {
5648            int lineStart = mLayout.getLineForOffset(selStart);
5649            int lineEnd = mLayout.getLineForOffset(selEnd);
5650            r.top = mLayout.getLineTop(lineStart);
5651            r.bottom = mLayout.getLineBottom(lineEnd);
5652            if (lineStart == lineEnd) {
5653                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
5654                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
5655            } else {
5656                // Selection extends across multiple lines -- make the focused
5657                // rect cover the entire width.
5658                if (mHighlightPathBogus) {
5659                    if (mHighlightPath == null) mHighlightPath = new Path();
5660                    mHighlightPath.reset();
5661                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5662                    mHighlightPathBogus = false;
5663                }
5664                synchronized (TEMP_RECTF) {
5665                    mHighlightPath.computeBounds(TEMP_RECTF, true);
5666                    r.left = (int)TEMP_RECTF.left-1;
5667                    r.right = (int)TEMP_RECTF.right+1;
5668                }
5669            }
5670        }
5671
5672        // Adjust for padding and gravity.
5673        int paddingLeft = getCompoundPaddingLeft();
5674        int paddingTop = getExtendedPaddingTop();
5675        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5676            paddingTop += getVerticalOffset(false);
5677        }
5678        r.offset(paddingLeft, paddingTop);
5679        int paddingBottom = getExtendedPaddingBottom();
5680        r.bottom += paddingBottom;
5681    }
5682
5683    /**
5684     * Return the number of lines of text, or 0 if the internal Layout has not
5685     * been built.
5686     */
5687    public int getLineCount() {
5688        return mLayout != null ? mLayout.getLineCount() : 0;
5689    }
5690
5691    /**
5692     * Return the baseline for the specified line (0...getLineCount() - 1)
5693     * If bounds is not null, return the top, left, right, bottom extents
5694     * of the specified line in it. If the internal Layout has not been built,
5695     * return 0 and set bounds to (0, 0, 0, 0)
5696     * @param line which line to examine (0..getLineCount() - 1)
5697     * @param bounds Optional. If not null, it returns the extent of the line
5698     * @return the Y-coordinate of the baseline
5699     */
5700    public int getLineBounds(int line, Rect bounds) {
5701        if (mLayout == null) {
5702            if (bounds != null) {
5703                bounds.set(0, 0, 0, 0);
5704            }
5705            return 0;
5706        }
5707        else {
5708            int baseline = mLayout.getLineBounds(line, bounds);
5709
5710            int voffset = getExtendedPaddingTop();
5711            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5712                voffset += getVerticalOffset(true);
5713            }
5714            if (bounds != null) {
5715                bounds.offset(getCompoundPaddingLeft(), voffset);
5716            }
5717            return baseline + voffset;
5718        }
5719    }
5720
5721    @Override
5722    public int getBaseline() {
5723        if (mLayout == null) {
5724            return super.getBaseline();
5725        }
5726
5727        int voffset = 0;
5728        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5729            voffset = getVerticalOffset(true);
5730        }
5731
5732        if (isLayoutModeOptical(mParent)) {
5733            voffset -= getOpticalInsets().top;
5734        }
5735
5736        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
5737    }
5738
5739    /**
5740     * @hide
5741     */
5742    @Override
5743    protected int getFadeTop(boolean offsetRequired) {
5744        if (mLayout == null) return 0;
5745
5746        int voffset = 0;
5747        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5748            voffset = getVerticalOffset(true);
5749        }
5750
5751        if (offsetRequired) voffset += getTopPaddingOffset();
5752
5753        return getExtendedPaddingTop() + voffset;
5754    }
5755
5756    /**
5757     * @hide
5758     */
5759    @Override
5760    protected int getFadeHeight(boolean offsetRequired) {
5761        return mLayout != null ? mLayout.getHeight() : 0;
5762    }
5763
5764    @Override
5765    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
5766        if (keyCode == KeyEvent.KEYCODE_BACK) {
5767            boolean isInSelectionMode = mEditor != null && mEditor.mSelectionActionMode != null;
5768
5769            if (isInSelectionMode) {
5770                if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
5771                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5772                    if (state != null) {
5773                        state.startTracking(event, this);
5774                    }
5775                    return true;
5776                } else if (event.getAction() == KeyEvent.ACTION_UP) {
5777                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5778                    if (state != null) {
5779                        state.handleUpEvent(event);
5780                    }
5781                    if (event.isTracking() && !event.isCanceled()) {
5782                        stopSelectionActionMode();
5783                        return true;
5784                    }
5785                }
5786            }
5787        }
5788        return super.onKeyPreIme(keyCode, event);
5789    }
5790
5791    @Override
5792    public boolean onKeyDown(int keyCode, KeyEvent event) {
5793        int which = doKeyDown(keyCode, event, null);
5794        if (which == 0) {
5795            return super.onKeyDown(keyCode, event);
5796        }
5797
5798        return true;
5799    }
5800
5801    @Override
5802    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
5803        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
5804
5805        int which = doKeyDown(keyCode, down, event);
5806        if (which == 0) {
5807            // Go through default dispatching.
5808            return super.onKeyMultiple(keyCode, repeatCount, event);
5809        }
5810        if (which == -1) {
5811            // Consumed the whole thing.
5812            return true;
5813        }
5814
5815        repeatCount--;
5816
5817        // We are going to dispatch the remaining events to either the input
5818        // or movement method.  To do this, we will just send a repeated stream
5819        // of down and up events until we have done the complete repeatCount.
5820        // It would be nice if those interfaces had an onKeyMultiple() method,
5821        // but adding that is a more complicated change.
5822        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
5823        if (which == 1) {
5824            // mEditor and mEditor.mInput are not null from doKeyDown
5825            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5826            while (--repeatCount > 0) {
5827                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
5828                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5829            }
5830            hideErrorIfUnchanged();
5831
5832        } else if (which == 2) {
5833            // mMovement is not null from doKeyDown
5834            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5835            while (--repeatCount > 0) {
5836                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
5837                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5838            }
5839        }
5840
5841        return true;
5842    }
5843
5844    /**
5845     * Returns true if pressing ENTER in this field advances focus instead
5846     * of inserting the character.  This is true mostly in single-line fields,
5847     * but also in mail addresses and subjects which will display on multiple
5848     * lines but where it doesn't make sense to insert newlines.
5849     */
5850    private boolean shouldAdvanceFocusOnEnter() {
5851        if (getKeyListener() == null) {
5852            return false;
5853        }
5854
5855        if (mSingleLine) {
5856            return true;
5857        }
5858
5859        if (mEditor != null &&
5860                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5861            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5862            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
5863                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
5864                return true;
5865            }
5866        }
5867
5868        return false;
5869    }
5870
5871    /**
5872     * Returns true if pressing TAB in this field advances focus instead
5873     * of inserting the character.  Insert tabs only in multi-line editors.
5874     */
5875    private boolean shouldAdvanceFocusOnTab() {
5876        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
5877                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5878            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5879            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
5880                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
5881                return false;
5882            }
5883        }
5884        return true;
5885    }
5886
5887    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
5888        if (!isEnabled()) {
5889            return 0;
5890        }
5891
5892        // If this is the initial keydown, we don't want to prevent a movement away from this view.
5893        // While this shouldn't be necessary because any time we're preventing default movement we
5894        // should be restricting the focus to remain within this view, thus we'll also receive
5895        // the key up event, occasionally key up events will get dropped and we don't want to
5896        // prevent the user from traversing out of this on the next key down.
5897        if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
5898            mPreventDefaultMovement = false;
5899        }
5900
5901        switch (keyCode) {
5902            case KeyEvent.KEYCODE_ENTER:
5903                if (event.hasNoModifiers()) {
5904                    // When mInputContentType is set, we know that we are
5905                    // running in a "modern" cupcake environment, so don't need
5906                    // to worry about the application trying to capture
5907                    // enter key events.
5908                    if (mEditor != null && mEditor.mInputContentType != null) {
5909                        // If there is an action listener, given them a
5910                        // chance to consume the event.
5911                        if (mEditor.mInputContentType.onEditorActionListener != null &&
5912                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5913                                this, EditorInfo.IME_NULL, event)) {
5914                            mEditor.mInputContentType.enterDown = true;
5915                            // We are consuming the enter key for them.
5916                            return -1;
5917                        }
5918                    }
5919
5920                    // If our editor should move focus when enter is pressed, or
5921                    // this is a generated event from an IME action button, then
5922                    // don't let it be inserted into the text.
5923                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5924                            || shouldAdvanceFocusOnEnter()) {
5925                        if (hasOnClickListeners()) {
5926                            return 0;
5927                        }
5928                        return -1;
5929                    }
5930                }
5931                break;
5932
5933            case KeyEvent.KEYCODE_DPAD_CENTER:
5934                if (event.hasNoModifiers()) {
5935                    if (shouldAdvanceFocusOnEnter()) {
5936                        return 0;
5937                    }
5938                }
5939                break;
5940
5941            case KeyEvent.KEYCODE_TAB:
5942                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
5943                    if (shouldAdvanceFocusOnTab()) {
5944                        return 0;
5945                    }
5946                }
5947                break;
5948
5949                // Has to be done on key down (and not on key up) to correctly be intercepted.
5950            case KeyEvent.KEYCODE_BACK:
5951                if (mEditor != null && mEditor.mSelectionActionMode != null) {
5952                    stopSelectionActionMode();
5953                    return -1;
5954                }
5955                break;
5956        }
5957
5958        if (mEditor != null && mEditor.mKeyListener != null) {
5959            boolean doDown = true;
5960            if (otherEvent != null) {
5961                try {
5962                    beginBatchEdit();
5963                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
5964                            otherEvent);
5965                    hideErrorIfUnchanged();
5966                    doDown = false;
5967                    if (handled) {
5968                        return -1;
5969                    }
5970                } catch (AbstractMethodError e) {
5971                    // onKeyOther was added after 1.0, so if it isn't
5972                    // implemented we need to try to dispatch as a regular down.
5973                } finally {
5974                    endBatchEdit();
5975                }
5976            }
5977
5978            if (doDown) {
5979                beginBatchEdit();
5980                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
5981                        keyCode, event);
5982                endBatchEdit();
5983                hideErrorIfUnchanged();
5984                if (handled) return 1;
5985            }
5986        }
5987
5988        // bug 650865: sometimes we get a key event before a layout.
5989        // don't try to move around if we don't know the layout.
5990
5991        if (mMovement != null && mLayout != null) {
5992            boolean doDown = true;
5993            if (otherEvent != null) {
5994                try {
5995                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
5996                            otherEvent);
5997                    doDown = false;
5998                    if (handled) {
5999                        return -1;
6000                    }
6001                } catch (AbstractMethodError e) {
6002                    // onKeyOther was added after 1.0, so if it isn't
6003                    // implemented we need to try to dispatch as a regular down.
6004                }
6005            }
6006            if (doDown) {
6007                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event)) {
6008                    if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6009                        mPreventDefaultMovement = true;
6010                    }
6011                    return 2;
6012                }
6013            }
6014        }
6015
6016        return mPreventDefaultMovement && !KeyEvent.isModifierKey(keyCode) ? -1 : 0;
6017    }
6018
6019    /**
6020     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
6021     * can be recorded.
6022     * @hide
6023     */
6024    public void resetErrorChangedFlag() {
6025        /*
6026         * Keep track of what the error was before doing the input
6027         * so that if an input filter changed the error, we leave
6028         * that error showing.  Otherwise, we take down whatever
6029         * error was showing when the user types something.
6030         */
6031        if (mEditor != null) mEditor.mErrorWasChanged = false;
6032    }
6033
6034    /**
6035     * @hide
6036     */
6037    public void hideErrorIfUnchanged() {
6038        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
6039            setError(null, null);
6040        }
6041    }
6042
6043    @Override
6044    public boolean onKeyUp(int keyCode, KeyEvent event) {
6045        if (!isEnabled()) {
6046            return super.onKeyUp(keyCode, event);
6047        }
6048
6049        if (!KeyEvent.isModifierKey(keyCode)) {
6050            mPreventDefaultMovement = false;
6051        }
6052
6053        switch (keyCode) {
6054            case KeyEvent.KEYCODE_DPAD_CENTER:
6055                if (event.hasNoModifiers()) {
6056                    /*
6057                     * If there is a click listener, just call through to
6058                     * super, which will invoke it.
6059                     *
6060                     * If there isn't a click listener, try to show the soft
6061                     * input method.  (It will also
6062                     * call performClick(), but that won't do anything in
6063                     * this case.)
6064                     */
6065                    if (!hasOnClickListeners()) {
6066                        if (mMovement != null && mText instanceof Editable
6067                                && mLayout != null && onCheckIsTextEditor()) {
6068                            InputMethodManager imm = InputMethodManager.peekInstance();
6069                            viewClicked(imm);
6070                            if (imm != null && getShowSoftInputOnFocus()) {
6071                                imm.showSoftInput(this, 0);
6072                            }
6073                        }
6074                    }
6075                }
6076                return super.onKeyUp(keyCode, event);
6077
6078            case KeyEvent.KEYCODE_ENTER:
6079                if (event.hasNoModifiers()) {
6080                    if (mEditor != null && mEditor.mInputContentType != null
6081                            && mEditor.mInputContentType.onEditorActionListener != null
6082                            && mEditor.mInputContentType.enterDown) {
6083                        mEditor.mInputContentType.enterDown = false;
6084                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6085                                this, EditorInfo.IME_NULL, event)) {
6086                            return true;
6087                        }
6088                    }
6089
6090                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6091                            || shouldAdvanceFocusOnEnter()) {
6092                        /*
6093                         * If there is a click listener, just call through to
6094                         * super, which will invoke it.
6095                         *
6096                         * If there isn't a click listener, try to advance focus,
6097                         * but still call through to super, which will reset the
6098                         * pressed state and longpress state.  (It will also
6099                         * call performClick(), but that won't do anything in
6100                         * this case.)
6101                         */
6102                        if (!hasOnClickListeners()) {
6103                            View v = focusSearch(FOCUS_DOWN);
6104
6105                            if (v != null) {
6106                                if (!v.requestFocus(FOCUS_DOWN)) {
6107                                    throw new IllegalStateException(
6108                                            "focus search returned a view " +
6109                                            "that wasn't able to take focus!");
6110                                }
6111
6112                                /*
6113                                 * Return true because we handled the key; super
6114                                 * will return false because there was no click
6115                                 * listener.
6116                                 */
6117                                super.onKeyUp(keyCode, event);
6118                                return true;
6119                            } else if ((event.getFlags()
6120                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
6121                                // No target for next focus, but make sure the IME
6122                                // if this came from it.
6123                                InputMethodManager imm = InputMethodManager.peekInstance();
6124                                if (imm != null && imm.isActive(this)) {
6125                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
6126                                }
6127                            }
6128                        }
6129                    }
6130                    return super.onKeyUp(keyCode, event);
6131                }
6132                break;
6133        }
6134
6135        if (mEditor != null && mEditor.mKeyListener != null)
6136            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
6137                return true;
6138
6139        if (mMovement != null && mLayout != null)
6140            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
6141                return true;
6142
6143        return super.onKeyUp(keyCode, event);
6144    }
6145
6146    @Override
6147    public boolean onCheckIsTextEditor() {
6148        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
6149    }
6150
6151    @Override
6152    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
6153        if (onCheckIsTextEditor() && isEnabled()) {
6154            mEditor.createInputMethodStateIfNeeded();
6155            outAttrs.inputType = getInputType();
6156            if (mEditor.mInputContentType != null) {
6157                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
6158                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
6159                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
6160                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
6161                outAttrs.extras = mEditor.mInputContentType.extras;
6162            } else {
6163                outAttrs.imeOptions = EditorInfo.IME_NULL;
6164            }
6165            if (focusSearch(FOCUS_DOWN) != null) {
6166                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
6167            }
6168            if (focusSearch(FOCUS_UP) != null) {
6169                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
6170            }
6171            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
6172                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
6173                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
6174                    // An action has not been set, but the enter key will move to
6175                    // the next focus, so set the action to that.
6176                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
6177                } else {
6178                    // An action has not been set, and there is no focus to move
6179                    // to, so let's just supply a "done" action.
6180                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
6181                }
6182                if (!shouldAdvanceFocusOnEnter()) {
6183                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6184                }
6185            }
6186            if (isMultilineInputType(outAttrs.inputType)) {
6187                // Multi-line text editors should always show an enter key.
6188                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6189            }
6190            outAttrs.hintText = mHint;
6191            if (mText instanceof Editable) {
6192                InputConnection ic = new EditableInputConnection(this);
6193                outAttrs.initialSelStart = getSelectionStart();
6194                outAttrs.initialSelEnd = getSelectionEnd();
6195                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
6196                return ic;
6197            }
6198        }
6199        return null;
6200    }
6201
6202    /**
6203     * If this TextView contains editable content, extract a portion of it
6204     * based on the information in <var>request</var> in to <var>outText</var>.
6205     * @return Returns true if the text was successfully extracted, else false.
6206     */
6207    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
6208        createEditorIfNeeded();
6209        return mEditor.extractText(request, outText);
6210    }
6211
6212    /**
6213     * This is used to remove all style-impacting spans from text before new
6214     * extracted text is being replaced into it, so that we don't have any
6215     * lingering spans applied during the replace.
6216     */
6217    static void removeParcelableSpans(Spannable spannable, int start, int end) {
6218        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
6219        int i = spans.length;
6220        while (i > 0) {
6221            i--;
6222            spannable.removeSpan(spans[i]);
6223        }
6224    }
6225
6226    /**
6227     * Apply to this text view the given extracted text, as previously
6228     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
6229     */
6230    public void setExtractedText(ExtractedText text) {
6231        Editable content = getEditableText();
6232        if (text.text != null) {
6233            if (content == null) {
6234                setText(text.text, TextView.BufferType.EDITABLE);
6235            } else if (text.partialStartOffset < 0) {
6236                removeParcelableSpans(content, 0, content.length());
6237                content.replace(0, content.length(), text.text);
6238            } else {
6239                final int N = content.length();
6240                int start = text.partialStartOffset;
6241                if (start > N) start = N;
6242                int end = text.partialEndOffset;
6243                if (end > N) end = N;
6244                removeParcelableSpans(content, start, end);
6245                content.replace(start, end, text.text);
6246            }
6247        }
6248
6249        // Now set the selection position...  make sure it is in range, to
6250        // avoid crashes.  If this is a partial update, it is possible that
6251        // the underlying text may have changed, causing us problems here.
6252        // Also we just don't want to trust clients to do the right thing.
6253        Spannable sp = (Spannable)getText();
6254        final int N = sp.length();
6255        int start = text.selectionStart;
6256        if (start < 0) start = 0;
6257        else if (start > N) start = N;
6258        int end = text.selectionEnd;
6259        if (end < 0) end = 0;
6260        else if (end > N) end = N;
6261        Selection.setSelection(sp, start, end);
6262
6263        // Finally, update the selection mode.
6264        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
6265            MetaKeyKeyListener.startSelecting(this, sp);
6266        } else {
6267            MetaKeyKeyListener.stopSelecting(this, sp);
6268        }
6269    }
6270
6271    /**
6272     * @hide
6273     */
6274    public void setExtracting(ExtractedTextRequest req) {
6275        if (mEditor.mInputMethodState != null) {
6276            mEditor.mInputMethodState.mExtractedTextRequest = req;
6277        }
6278        // This would stop a possible selection mode, but no such mode is started in case
6279        // extracted mode will start. Some text is selected though, and will trigger an action mode
6280        // in the extracted view.
6281        mEditor.hideControllers();
6282    }
6283
6284    /**
6285     * Called by the framework in response to a text completion from
6286     * the current input method, provided by it calling
6287     * {@link InputConnection#commitCompletion
6288     * InputConnection.commitCompletion()}.  The default implementation does
6289     * nothing; text views that are supporting auto-completion should override
6290     * this to do their desired behavior.
6291     *
6292     * @param text The auto complete text the user has selected.
6293     */
6294    public void onCommitCompletion(CompletionInfo text) {
6295        // intentionally empty
6296    }
6297
6298    /**
6299     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
6300     * a dictionnary) from the current input method, provided by it calling
6301     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
6302     * implementation flashes the background of the corrected word to provide feedback to the user.
6303     *
6304     * @param info The auto correct info about the text that was corrected.
6305     */
6306    public void onCommitCorrection(CorrectionInfo info) {
6307        if (mEditor != null) mEditor.onCommitCorrection(info);
6308    }
6309
6310    public void beginBatchEdit() {
6311        if (mEditor != null) mEditor.beginBatchEdit();
6312    }
6313
6314    public void endBatchEdit() {
6315        if (mEditor != null) mEditor.endBatchEdit();
6316    }
6317
6318    /**
6319     * Called by the framework in response to a request to begin a batch
6320     * of edit operations through a call to link {@link #beginBatchEdit()}.
6321     */
6322    public void onBeginBatchEdit() {
6323        // intentionally empty
6324    }
6325
6326    /**
6327     * Called by the framework in response to a request to end a batch
6328     * of edit operations through a call to link {@link #endBatchEdit}.
6329     */
6330    public void onEndBatchEdit() {
6331        // intentionally empty
6332    }
6333
6334    /**
6335     * Called by the framework in response to a private command from the
6336     * current method, provided by it calling
6337     * {@link InputConnection#performPrivateCommand
6338     * InputConnection.performPrivateCommand()}.
6339     *
6340     * @param action The action name of the command.
6341     * @param data Any additional data for the command.  This may be null.
6342     * @return Return true if you handled the command, else false.
6343     */
6344    public boolean onPrivateIMECommand(String action, Bundle data) {
6345        return false;
6346    }
6347
6348    private void nullLayouts() {
6349        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
6350            mSavedLayout = (BoringLayout) mLayout;
6351        }
6352        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
6353            mSavedHintLayout = (BoringLayout) mHintLayout;
6354        }
6355
6356        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
6357
6358        mBoring = mHintBoring = null;
6359
6360        // Since it depends on the value of mLayout
6361        if (mEditor != null) mEditor.prepareCursorControllers();
6362    }
6363
6364    /**
6365     * Make a new Layout based on the already-measured size of the view,
6366     * on the assumption that it was measured correctly at some point.
6367     */
6368    private void assumeLayout() {
6369        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6370
6371        if (width < 1) {
6372            width = 0;
6373        }
6374
6375        int physicalWidth = width;
6376
6377        if (mHorizontallyScrolling) {
6378            width = VERY_WIDE;
6379        }
6380
6381        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
6382                      physicalWidth, false);
6383    }
6384
6385    private Layout.Alignment getLayoutAlignment() {
6386        Layout.Alignment alignment;
6387        switch (getTextAlignment()) {
6388            case TEXT_ALIGNMENT_GRAVITY:
6389                switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
6390                    case Gravity.START:
6391                        alignment = Layout.Alignment.ALIGN_NORMAL;
6392                        break;
6393                    case Gravity.END:
6394                        alignment = Layout.Alignment.ALIGN_OPPOSITE;
6395                        break;
6396                    case Gravity.LEFT:
6397                        alignment = Layout.Alignment.ALIGN_LEFT;
6398                        break;
6399                    case Gravity.RIGHT:
6400                        alignment = Layout.Alignment.ALIGN_RIGHT;
6401                        break;
6402                    case Gravity.CENTER_HORIZONTAL:
6403                        alignment = Layout.Alignment.ALIGN_CENTER;
6404                        break;
6405                    default:
6406                        alignment = Layout.Alignment.ALIGN_NORMAL;
6407                        break;
6408                }
6409                break;
6410            case TEXT_ALIGNMENT_TEXT_START:
6411                alignment = Layout.Alignment.ALIGN_NORMAL;
6412                break;
6413            case TEXT_ALIGNMENT_TEXT_END:
6414                alignment = Layout.Alignment.ALIGN_OPPOSITE;
6415                break;
6416            case TEXT_ALIGNMENT_CENTER:
6417                alignment = Layout.Alignment.ALIGN_CENTER;
6418                break;
6419            case TEXT_ALIGNMENT_VIEW_START:
6420                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6421                        Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
6422                break;
6423            case TEXT_ALIGNMENT_VIEW_END:
6424                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6425                        Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
6426                break;
6427            case TEXT_ALIGNMENT_INHERIT:
6428                // This should never happen as we have already resolved the text alignment
6429                // but better safe than sorry so we just fall through
6430            default:
6431                alignment = Layout.Alignment.ALIGN_NORMAL;
6432                break;
6433        }
6434        return alignment;
6435    }
6436
6437    /**
6438     * The width passed in is now the desired layout width,
6439     * not the full view width with padding.
6440     * {@hide}
6441     */
6442    protected void makeNewLayout(int wantWidth, int hintWidth,
6443                                 BoringLayout.Metrics boring,
6444                                 BoringLayout.Metrics hintBoring,
6445                                 int ellipsisWidth, boolean bringIntoView) {
6446        stopMarquee();
6447
6448        // Update "old" cached values
6449        mOldMaximum = mMaximum;
6450        mOldMaxMode = mMaxMode;
6451
6452        mHighlightPathBogus = true;
6453
6454        if (wantWidth < 0) {
6455            wantWidth = 0;
6456        }
6457        if (hintWidth < 0) {
6458            hintWidth = 0;
6459        }
6460
6461        Layout.Alignment alignment = getLayoutAlignment();
6462        final boolean testDirChange = mSingleLine && mLayout != null &&
6463            (alignment == Layout.Alignment.ALIGN_NORMAL ||
6464             alignment == Layout.Alignment.ALIGN_OPPOSITE);
6465        int oldDir = 0;
6466        if (testDirChange) oldDir = mLayout.getParagraphDirection(0);
6467        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
6468        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
6469                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
6470        TruncateAt effectiveEllipsize = mEllipsize;
6471        if (mEllipsize == TruncateAt.MARQUEE &&
6472                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6473            effectiveEllipsize = TruncateAt.END_SMALL;
6474        }
6475
6476        if (mTextDir == null) {
6477            mTextDir = getTextDirectionHeuristic();
6478        }
6479
6480        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
6481                effectiveEllipsize, effectiveEllipsize == mEllipsize);
6482        if (switchEllipsize) {
6483            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
6484                    TruncateAt.END : TruncateAt.MARQUEE;
6485            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
6486                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
6487        }
6488
6489        shouldEllipsize = mEllipsize != null;
6490        mHintLayout = null;
6491
6492        if (mHint != null) {
6493            if (shouldEllipsize) hintWidth = wantWidth;
6494
6495            if (hintBoring == UNKNOWN_BORING) {
6496                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
6497                                                   mHintBoring);
6498                if (hintBoring != null) {
6499                    mHintBoring = hintBoring;
6500                }
6501            }
6502
6503            if (hintBoring != null) {
6504                if (hintBoring.width <= hintWidth &&
6505                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
6506                    if (mSavedHintLayout != null) {
6507                        mHintLayout = mSavedHintLayout.
6508                                replaceOrMake(mHint, mTextPaint,
6509                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6510                                hintBoring, mIncludePad);
6511                    } else {
6512                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6513                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6514                                hintBoring, mIncludePad);
6515                    }
6516
6517                    mSavedHintLayout = (BoringLayout) mHintLayout;
6518                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
6519                    if (mSavedHintLayout != null) {
6520                        mHintLayout = mSavedHintLayout.
6521                                replaceOrMake(mHint, mTextPaint,
6522                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6523                                hintBoring, mIncludePad, mEllipsize,
6524                                ellipsisWidth);
6525                    } else {
6526                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6527                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6528                                hintBoring, mIncludePad, mEllipsize,
6529                                ellipsisWidth);
6530                    }
6531                }
6532            }
6533            // TODO: code duplication with makeSingleLayout()
6534            if (mHintLayout == null) {
6535                StaticLayout.Builder builder = StaticLayout.Builder.obtain(mHint, 0,
6536                        mHint.length(), hintWidth)
6537                        .setPaint(mTextPaint)
6538                        .setAlignment(alignment)
6539                        .setTextDir(mTextDir)
6540                        .setSpacingMult(mSpacingMult)
6541                        .setSpacingAdd(mSpacingAdd)
6542                        .setIncludePad(mIncludePad)
6543                        .setBreakStrategy(mBreakStrategy);
6544                if (shouldEllipsize) {
6545                    builder.setEllipsize(mEllipsize)
6546                            .setEllipsizedWidth(ellipsisWidth)
6547                            .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6548                }
6549                mHintLayout = builder.build();
6550            }
6551        }
6552
6553        if (bringIntoView || (testDirChange && oldDir != mLayout.getParagraphDirection(0))) {
6554            registerForPreDraw();
6555        }
6556
6557        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6558            if (!compressText(ellipsisWidth)) {
6559                final int height = mLayoutParams.height;
6560                // If the size of the view does not depend on the size of the text, try to
6561                // start the marquee immediately
6562                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
6563                    startMarquee();
6564                } else {
6565                    // Defer the start of the marquee until we know our width (see setFrame())
6566                    mRestartMarquee = true;
6567                }
6568            }
6569        }
6570
6571        // CursorControllers need a non-null mLayout
6572        if (mEditor != null) mEditor.prepareCursorControllers();
6573    }
6574
6575    private Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
6576            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
6577            boolean useSaved) {
6578        Layout result = null;
6579        if (mText instanceof Spannable) {
6580            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
6581                    alignment, mTextDir, mSpacingMult, mSpacingAdd, mIncludePad, mBreakStrategy,
6582                    getKeyListener() == null ? effectiveEllipsize : null, ellipsisWidth);
6583        } else {
6584            if (boring == UNKNOWN_BORING) {
6585                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6586                if (boring != null) {
6587                    mBoring = boring;
6588                }
6589            }
6590
6591            if (boring != null) {
6592                if (boring.width <= wantWidth &&
6593                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
6594                    if (useSaved && mSavedLayout != null) {
6595                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6596                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6597                                boring, mIncludePad);
6598                    } else {
6599                        result = BoringLayout.make(mTransformed, mTextPaint,
6600                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6601                                boring, mIncludePad);
6602                    }
6603
6604                    if (useSaved) {
6605                        mSavedLayout = (BoringLayout) result;
6606                    }
6607                } else if (shouldEllipsize && boring.width <= wantWidth) {
6608                    if (useSaved && mSavedLayout != null) {
6609                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6610                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6611                                boring, mIncludePad, effectiveEllipsize,
6612                                ellipsisWidth);
6613                    } else {
6614                        result = BoringLayout.make(mTransformed, mTextPaint,
6615                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6616                                boring, mIncludePad, effectiveEllipsize,
6617                                ellipsisWidth);
6618                    }
6619                }
6620            }
6621        }
6622        if (result == null) {
6623            StaticLayout.Builder builder = StaticLayout.Builder.obtain(mTransformed,
6624                    0, mTransformed.length(), wantWidth)
6625                    .setPaint(mTextPaint)
6626                    .setAlignment(alignment)
6627                    .setTextDir(mTextDir)
6628                    .setSpacingMult(mSpacingMult)
6629                    .setSpacingAdd(mSpacingAdd)
6630                    .setIncludePad(mIncludePad)
6631                    .setBreakStrategy(mBreakStrategy);
6632            if (shouldEllipsize) {
6633                builder.setEllipsize(effectiveEllipsize)
6634                        .setEllipsizedWidth(ellipsisWidth)
6635                        .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6636            }
6637            // TODO: explore always setting maxLines
6638            result = builder.build();
6639        }
6640        return result;
6641    }
6642
6643    private boolean compressText(float width) {
6644        if (isHardwareAccelerated()) return false;
6645
6646        // Only compress the text if it hasn't been compressed by the previous pass
6647        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
6648                mTextPaint.getTextScaleX() == 1.0f) {
6649            final float textWidth = mLayout.getLineWidth(0);
6650            final float overflow = (textWidth + 1.0f - width) / width;
6651            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
6652                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
6653                post(new Runnable() {
6654                    public void run() {
6655                        requestLayout();
6656                    }
6657                });
6658                return true;
6659            }
6660        }
6661
6662        return false;
6663    }
6664
6665    private static int desired(Layout layout) {
6666        int n = layout.getLineCount();
6667        CharSequence text = layout.getText();
6668        float max = 0;
6669
6670        // if any line was wrapped, we can't use it.
6671        // but it's ok for the last line not to have a newline
6672
6673        for (int i = 0; i < n - 1; i++) {
6674            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
6675                return -1;
6676        }
6677
6678        for (int i = 0; i < n; i++) {
6679            max = Math.max(max, layout.getLineWidth(i));
6680        }
6681
6682        return (int) Math.ceil(max);
6683    }
6684
6685    /**
6686     * Set whether the TextView includes extra top and bottom padding to make
6687     * room for accents that go above the normal ascent and descent.
6688     * The default is true.
6689     *
6690     * @see #getIncludeFontPadding()
6691     *
6692     * @attr ref android.R.styleable#TextView_includeFontPadding
6693     */
6694    public void setIncludeFontPadding(boolean includepad) {
6695        if (mIncludePad != includepad) {
6696            mIncludePad = includepad;
6697
6698            if (mLayout != null) {
6699                nullLayouts();
6700                requestLayout();
6701                invalidate();
6702            }
6703        }
6704    }
6705
6706    /**
6707     * Gets whether the TextView includes extra top and bottom padding to make
6708     * room for accents that go above the normal ascent and descent.
6709     *
6710     * @see #setIncludeFontPadding(boolean)
6711     *
6712     * @attr ref android.R.styleable#TextView_includeFontPadding
6713     */
6714    public boolean getIncludeFontPadding() {
6715        return mIncludePad;
6716    }
6717
6718    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
6719
6720    @Override
6721    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
6722        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
6723        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
6724        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
6725        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
6726
6727        int width;
6728        int height;
6729
6730        BoringLayout.Metrics boring = UNKNOWN_BORING;
6731        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
6732
6733        if (mTextDir == null) {
6734            mTextDir = getTextDirectionHeuristic();
6735        }
6736
6737        int des = -1;
6738        boolean fromexisting = false;
6739
6740        if (widthMode == MeasureSpec.EXACTLY) {
6741            // Parent has told us how big to be. So be it.
6742            width = widthSize;
6743        } else {
6744            if (mLayout != null && mEllipsize == null) {
6745                des = desired(mLayout);
6746            }
6747
6748            if (des < 0) {
6749                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6750                if (boring != null) {
6751                    mBoring = boring;
6752                }
6753            } else {
6754                fromexisting = true;
6755            }
6756
6757            if (boring == null || boring == UNKNOWN_BORING) {
6758                if (des < 0) {
6759                    des = (int) Math.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
6760                }
6761                width = des;
6762            } else {
6763                width = boring.width;
6764            }
6765
6766            final Drawables dr = mDrawables;
6767            if (dr != null) {
6768                width = Math.max(width, dr.mDrawableWidthTop);
6769                width = Math.max(width, dr.mDrawableWidthBottom);
6770            }
6771
6772            if (mHint != null) {
6773                int hintDes = -1;
6774                int hintWidth;
6775
6776                if (mHintLayout != null && mEllipsize == null) {
6777                    hintDes = desired(mHintLayout);
6778                }
6779
6780                if (hintDes < 0) {
6781                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
6782                    if (hintBoring != null) {
6783                        mHintBoring = hintBoring;
6784                    }
6785                }
6786
6787                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
6788                    if (hintDes < 0) {
6789                        hintDes = (int) Math.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
6790                    }
6791                    hintWidth = hintDes;
6792                } else {
6793                    hintWidth = hintBoring.width;
6794                }
6795
6796                if (hintWidth > width) {
6797                    width = hintWidth;
6798                }
6799            }
6800
6801            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
6802
6803            if (mMaxWidthMode == EMS) {
6804                width = Math.min(width, mMaxWidth * getLineHeight());
6805            } else {
6806                width = Math.min(width, mMaxWidth);
6807            }
6808
6809            if (mMinWidthMode == EMS) {
6810                width = Math.max(width, mMinWidth * getLineHeight());
6811            } else {
6812                width = Math.max(width, mMinWidth);
6813            }
6814
6815            // Check against our minimum width
6816            width = Math.max(width, getSuggestedMinimumWidth());
6817
6818            if (widthMode == MeasureSpec.AT_MOST) {
6819                width = Math.min(widthSize, width);
6820            }
6821        }
6822
6823        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
6824        int unpaddedWidth = want;
6825
6826        if (mHorizontallyScrolling) want = VERY_WIDE;
6827
6828        int hintWant = want;
6829        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
6830
6831        if (mLayout == null) {
6832            makeNewLayout(want, hintWant, boring, hintBoring,
6833                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6834        } else {
6835            final boolean layoutChanged = (mLayout.getWidth() != want) ||
6836                    (hintWidth != hintWant) ||
6837                    (mLayout.getEllipsizedWidth() !=
6838                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
6839
6840            final boolean widthChanged = (mHint == null) &&
6841                    (mEllipsize == null) &&
6842                    (want > mLayout.getWidth()) &&
6843                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
6844
6845            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
6846
6847            if (layoutChanged || maximumChanged) {
6848                if (!maximumChanged && widthChanged) {
6849                    mLayout.increaseWidthTo(want);
6850                } else {
6851                    makeNewLayout(want, hintWant, boring, hintBoring,
6852                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6853                }
6854            } else {
6855                // Nothing has changed
6856            }
6857        }
6858
6859        if (heightMode == MeasureSpec.EXACTLY) {
6860            // Parent has told us how big to be. So be it.
6861            height = heightSize;
6862            mDesiredHeightAtMeasure = -1;
6863        } else {
6864            int desired = getDesiredHeight();
6865
6866            height = desired;
6867            mDesiredHeightAtMeasure = desired;
6868
6869            if (heightMode == MeasureSpec.AT_MOST) {
6870                height = Math.min(desired, heightSize);
6871            }
6872        }
6873
6874        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
6875        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
6876            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
6877        }
6878
6879        /*
6880         * We didn't let makeNewLayout() register to bring the cursor into view,
6881         * so do it here if there is any possibility that it is needed.
6882         */
6883        if (mMovement != null ||
6884            mLayout.getWidth() > unpaddedWidth ||
6885            mLayout.getHeight() > unpaddedHeight) {
6886            registerForPreDraw();
6887        } else {
6888            scrollTo(0, 0);
6889        }
6890
6891        setMeasuredDimension(width, height);
6892    }
6893
6894    private int getDesiredHeight() {
6895        return Math.max(
6896                getDesiredHeight(mLayout, true),
6897                getDesiredHeight(mHintLayout, mEllipsize != null));
6898    }
6899
6900    private int getDesiredHeight(Layout layout, boolean cap) {
6901        if (layout == null) {
6902            return 0;
6903        }
6904
6905        int linecount = layout.getLineCount();
6906        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
6907        int desired = layout.getLineTop(linecount);
6908
6909        final Drawables dr = mDrawables;
6910        if (dr != null) {
6911            desired = Math.max(desired, dr.mDrawableHeightLeft);
6912            desired = Math.max(desired, dr.mDrawableHeightRight);
6913        }
6914
6915        desired += pad;
6916
6917        if (mMaxMode == LINES) {
6918            /*
6919             * Don't cap the hint to a certain number of lines.
6920             * (Do cap it, though, if we have a maximum pixel height.)
6921             */
6922            if (cap) {
6923                if (linecount > mMaximum) {
6924                    desired = layout.getLineTop(mMaximum);
6925
6926                    if (dr != null) {
6927                        desired = Math.max(desired, dr.mDrawableHeightLeft);
6928                        desired = Math.max(desired, dr.mDrawableHeightRight);
6929                    }
6930
6931                    desired += pad;
6932                    linecount = mMaximum;
6933                }
6934            }
6935        } else {
6936            desired = Math.min(desired, mMaximum);
6937        }
6938
6939        if (mMinMode == LINES) {
6940            if (linecount < mMinimum) {
6941                desired += getLineHeight() * (mMinimum - linecount);
6942            }
6943        } else {
6944            desired = Math.max(desired, mMinimum);
6945        }
6946
6947        // Check against our minimum height
6948        desired = Math.max(desired, getSuggestedMinimumHeight());
6949
6950        return desired;
6951    }
6952
6953    /**
6954     * Check whether a change to the existing text layout requires a
6955     * new view layout.
6956     */
6957    private void checkForResize() {
6958        boolean sizeChanged = false;
6959
6960        if (mLayout != null) {
6961            // Check if our width changed
6962            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
6963                sizeChanged = true;
6964                invalidate();
6965            }
6966
6967            // Check if our height changed
6968            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
6969                int desiredHeight = getDesiredHeight();
6970
6971                if (desiredHeight != this.getHeight()) {
6972                    sizeChanged = true;
6973                }
6974            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
6975                if (mDesiredHeightAtMeasure >= 0) {
6976                    int desiredHeight = getDesiredHeight();
6977
6978                    if (desiredHeight != mDesiredHeightAtMeasure) {
6979                        sizeChanged = true;
6980                    }
6981                }
6982            }
6983        }
6984
6985        if (sizeChanged) {
6986            requestLayout();
6987            // caller will have already invalidated
6988        }
6989    }
6990
6991    /**
6992     * Check whether entirely new text requires a new view layout
6993     * or merely a new text layout.
6994     */
6995    private void checkForRelayout() {
6996        // If we have a fixed width, we can just swap in a new text layout
6997        // if the text height stays the same or if the view height is fixed.
6998
6999        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
7000                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
7001                (mHint == null || mHintLayout != null) &&
7002                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
7003            // Static width, so try making a new text layout.
7004
7005            int oldht = mLayout.getHeight();
7006            int want = mLayout.getWidth();
7007            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
7008
7009            /*
7010             * No need to bring the text into view, since the size is not
7011             * changing (unless we do the requestLayout(), in which case it
7012             * will happen at measure).
7013             */
7014            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
7015                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
7016                          false);
7017
7018            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
7019                // In a fixed-height view, so use our new text layout.
7020                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
7021                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
7022                    invalidate();
7023                    return;
7024                }
7025
7026                // Dynamic height, but height has stayed the same,
7027                // so use our new text layout.
7028                if (mLayout.getHeight() == oldht &&
7029                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
7030                    invalidate();
7031                    return;
7032                }
7033            }
7034
7035            // We lose: the height has changed and we have a dynamic height.
7036            // Request a new view layout using our new text layout.
7037            requestLayout();
7038            invalidate();
7039        } else {
7040            // Dynamic width, so we have no choice but to request a new
7041            // view layout with a new text layout.
7042            nullLayouts();
7043            requestLayout();
7044            invalidate();
7045        }
7046    }
7047
7048    @Override
7049    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
7050        super.onLayout(changed, left, top, right, bottom);
7051        if (mDeferScroll >= 0) {
7052            int curs = mDeferScroll;
7053            mDeferScroll = -1;
7054            bringPointIntoView(Math.min(curs, mText.length()));
7055        }
7056    }
7057
7058    private boolean isShowingHint() {
7059        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
7060    }
7061
7062    /**
7063     * Returns true if anything changed.
7064     */
7065    private boolean bringTextIntoView() {
7066        Layout layout = isShowingHint() ? mHintLayout : mLayout;
7067        int line = 0;
7068        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7069            line = layout.getLineCount() - 1;
7070        }
7071
7072        Layout.Alignment a = layout.getParagraphAlignment(line);
7073        int dir = layout.getParagraphDirection(line);
7074        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7075        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7076        int ht = layout.getHeight();
7077
7078        int scrollx, scrolly;
7079
7080        // Convert to left, center, or right alignment.
7081        if (a == Layout.Alignment.ALIGN_NORMAL) {
7082            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
7083                Layout.Alignment.ALIGN_RIGHT;
7084        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
7085            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
7086                Layout.Alignment.ALIGN_LEFT;
7087        }
7088
7089        if (a == Layout.Alignment.ALIGN_CENTER) {
7090            /*
7091             * Keep centered if possible, or, if it is too wide to fit,
7092             * keep leading edge in view.
7093             */
7094
7095            int left = (int) Math.floor(layout.getLineLeft(line));
7096            int right = (int) Math.ceil(layout.getLineRight(line));
7097
7098            if (right - left < hspace) {
7099                scrollx = (right + left) / 2 - hspace / 2;
7100            } else {
7101                if (dir < 0) {
7102                    scrollx = right - hspace;
7103                } else {
7104                    scrollx = left;
7105                }
7106            }
7107        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
7108            int right = (int) Math.ceil(layout.getLineRight(line));
7109            scrollx = right - hspace;
7110        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
7111            scrollx = (int) Math.floor(layout.getLineLeft(line));
7112        }
7113
7114        if (ht < vspace) {
7115            scrolly = 0;
7116        } else {
7117            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7118                scrolly = ht - vspace;
7119            } else {
7120                scrolly = 0;
7121            }
7122        }
7123
7124        if (scrollx != mScrollX || scrolly != mScrollY) {
7125            scrollTo(scrollx, scrolly);
7126            return true;
7127        } else {
7128            return false;
7129        }
7130    }
7131
7132    /**
7133     * Move the point, specified by the offset, into the view if it is needed.
7134     * This has to be called after layout. Returns true if anything changed.
7135     */
7136    public boolean bringPointIntoView(int offset) {
7137        if (isLayoutRequested()) {
7138            mDeferScroll = offset;
7139            return false;
7140        }
7141        boolean changed = false;
7142
7143        Layout layout = isShowingHint() ? mHintLayout: mLayout;
7144
7145        if (layout == null) return changed;
7146
7147        int line = layout.getLineForOffset(offset);
7148
7149        int grav;
7150
7151        switch (layout.getParagraphAlignment(line)) {
7152            case ALIGN_LEFT:
7153                grav = 1;
7154                break;
7155            case ALIGN_RIGHT:
7156                grav = -1;
7157                break;
7158            case ALIGN_NORMAL:
7159                grav = layout.getParagraphDirection(line);
7160                break;
7161            case ALIGN_OPPOSITE:
7162                grav = -layout.getParagraphDirection(line);
7163                break;
7164            case ALIGN_CENTER:
7165            default:
7166                grav = 0;
7167                break;
7168        }
7169
7170        // We only want to clamp the cursor to fit within the layout width
7171        // in left-to-right modes, because in a right to left alignment,
7172        // we want to scroll to keep the line-right on the screen, as other
7173        // lines are likely to have text flush with the right margin, which
7174        // we want to keep visible.
7175        // A better long-term solution would probably be to measure both
7176        // the full line and a blank-trimmed version, and, for example, use
7177        // the latter measurement for centering and right alignment, but for
7178        // the time being we only implement the cursor clamping in left to
7179        // right where it is most likely to be annoying.
7180        final boolean clamped = grav > 0;
7181        // FIXME: Is it okay to truncate this, or should we round?
7182        final int x = (int)layout.getPrimaryHorizontal(offset, clamped);
7183        final int top = layout.getLineTop(line);
7184        final int bottom = layout.getLineTop(line + 1);
7185
7186        int left = (int) Math.floor(layout.getLineLeft(line));
7187        int right = (int) Math.ceil(layout.getLineRight(line));
7188        int ht = layout.getHeight();
7189
7190        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7191        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7192        if (!mHorizontallyScrolling && right - left > hspace && right > x) {
7193            // If cursor has been clamped, make sure we don't scroll.
7194            right = Math.max(x, left + hspace);
7195        }
7196
7197        int hslack = (bottom - top) / 2;
7198        int vslack = hslack;
7199
7200        if (vslack > vspace / 4)
7201            vslack = vspace / 4;
7202        if (hslack > hspace / 4)
7203            hslack = hspace / 4;
7204
7205        int hs = mScrollX;
7206        int vs = mScrollY;
7207
7208        if (top - vs < vslack)
7209            vs = top - vslack;
7210        if (bottom - vs > vspace - vslack)
7211            vs = bottom - (vspace - vslack);
7212        if (ht - vs < vspace)
7213            vs = ht - vspace;
7214        if (0 - vs > 0)
7215            vs = 0;
7216
7217        if (grav != 0) {
7218            if (x - hs < hslack) {
7219                hs = x - hslack;
7220            }
7221            if (x - hs > hspace - hslack) {
7222                hs = x - (hspace - hslack);
7223            }
7224        }
7225
7226        if (grav < 0) {
7227            if (left - hs > 0)
7228                hs = left;
7229            if (right - hs < hspace)
7230                hs = right - hspace;
7231        } else if (grav > 0) {
7232            if (right - hs < hspace)
7233                hs = right - hspace;
7234            if (left - hs > 0)
7235                hs = left;
7236        } else /* grav == 0 */ {
7237            if (right - left <= hspace) {
7238                /*
7239                 * If the entire text fits, center it exactly.
7240                 */
7241                hs = left - (hspace - (right - left)) / 2;
7242            } else if (x > right - hslack) {
7243                /*
7244                 * If we are near the right edge, keep the right edge
7245                 * at the edge of the view.
7246                 */
7247                hs = right - hspace;
7248            } else if (x < left + hslack) {
7249                /*
7250                 * If we are near the left edge, keep the left edge
7251                 * at the edge of the view.
7252                 */
7253                hs = left;
7254            } else if (left > hs) {
7255                /*
7256                 * Is there whitespace visible at the left?  Fix it if so.
7257                 */
7258                hs = left;
7259            } else if (right < hs + hspace) {
7260                /*
7261                 * Is there whitespace visible at the right?  Fix it if so.
7262                 */
7263                hs = right - hspace;
7264            } else {
7265                /*
7266                 * Otherwise, float as needed.
7267                 */
7268                if (x - hs < hslack) {
7269                    hs = x - hslack;
7270                }
7271                if (x - hs > hspace - hslack) {
7272                    hs = x - (hspace - hslack);
7273                }
7274            }
7275        }
7276
7277        if (hs != mScrollX || vs != mScrollY) {
7278            if (mScroller == null) {
7279                scrollTo(hs, vs);
7280            } else {
7281                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
7282                int dx = hs - mScrollX;
7283                int dy = vs - mScrollY;
7284
7285                if (duration > ANIMATED_SCROLL_GAP) {
7286                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
7287                    awakenScrollBars(mScroller.getDuration());
7288                    invalidate();
7289                } else {
7290                    if (!mScroller.isFinished()) {
7291                        mScroller.abortAnimation();
7292                    }
7293
7294                    scrollBy(dx, dy);
7295                }
7296
7297                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
7298            }
7299
7300            changed = true;
7301        }
7302
7303        if (isFocused()) {
7304            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
7305            // requestRectangleOnScreen() is in terms of content coordinates.
7306
7307            // The offsets here are to ensure the rectangle we are using is
7308            // within our view bounds, in case the cursor is on the far left
7309            // or right.  If it isn't withing the bounds, then this request
7310            // will be ignored.
7311            if (mTempRect == null) mTempRect = new Rect();
7312            mTempRect.set(x - 2, top, x + 2, bottom);
7313            getInterestingRect(mTempRect, line);
7314            mTempRect.offset(mScrollX, mScrollY);
7315
7316            if (requestRectangleOnScreen(mTempRect)) {
7317                changed = true;
7318            }
7319        }
7320
7321        return changed;
7322    }
7323
7324    /**
7325     * Move the cursor, if needed, so that it is at an offset that is visible
7326     * to the user.  This will not move the cursor if it represents more than
7327     * one character (a selection range).  This will only work if the
7328     * TextView contains spannable text; otherwise it will do nothing.
7329     *
7330     * @return True if the cursor was actually moved, false otherwise.
7331     */
7332    public boolean moveCursorToVisibleOffset() {
7333        if (!(mText instanceof Spannable)) {
7334            return false;
7335        }
7336        int start = getSelectionStart();
7337        int end = getSelectionEnd();
7338        if (start != end) {
7339            return false;
7340        }
7341
7342        // First: make sure the line is visible on screen:
7343
7344        int line = mLayout.getLineForOffset(start);
7345
7346        final int top = mLayout.getLineTop(line);
7347        final int bottom = mLayout.getLineTop(line + 1);
7348        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7349        int vslack = (bottom - top) / 2;
7350        if (vslack > vspace / 4)
7351            vslack = vspace / 4;
7352        final int vs = mScrollY;
7353
7354        if (top < (vs+vslack)) {
7355            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
7356        } else if (bottom > (vspace+vs-vslack)) {
7357            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
7358        }
7359
7360        // Next: make sure the character is visible on screen:
7361
7362        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7363        final int hs = mScrollX;
7364        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
7365        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
7366
7367        // line might contain bidirectional text
7368        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
7369        final int highChar = leftChar > rightChar ? leftChar : rightChar;
7370
7371        int newStart = start;
7372        if (newStart < lowChar) {
7373            newStart = lowChar;
7374        } else if (newStart > highChar) {
7375            newStart = highChar;
7376        }
7377
7378        if (newStart != start) {
7379            Selection.setSelection((Spannable)mText, newStart);
7380            return true;
7381        }
7382
7383        return false;
7384    }
7385
7386    @Override
7387    public void computeScroll() {
7388        if (mScroller != null) {
7389            if (mScroller.computeScrollOffset()) {
7390                mScrollX = mScroller.getCurrX();
7391                mScrollY = mScroller.getCurrY();
7392                invalidateParentCaches();
7393                postInvalidate();  // So we draw again
7394            }
7395        }
7396    }
7397
7398    private void getInterestingRect(Rect r, int line) {
7399        convertFromViewportToContentCoordinates(r);
7400
7401        // Rectangle can can be expanded on first and last line to take
7402        // padding into account.
7403        // TODO Take left/right padding into account too?
7404        if (line == 0) r.top -= getExtendedPaddingTop();
7405        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
7406    }
7407
7408    private void convertFromViewportToContentCoordinates(Rect r) {
7409        final int horizontalOffset = viewportToContentHorizontalOffset();
7410        r.left += horizontalOffset;
7411        r.right += horizontalOffset;
7412
7413        final int verticalOffset = viewportToContentVerticalOffset();
7414        r.top += verticalOffset;
7415        r.bottom += verticalOffset;
7416    }
7417
7418    int viewportToContentHorizontalOffset() {
7419        return getCompoundPaddingLeft() - mScrollX;
7420    }
7421
7422    int viewportToContentVerticalOffset() {
7423        int offset = getExtendedPaddingTop() - mScrollY;
7424        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
7425            offset += getVerticalOffset(false);
7426        }
7427        return offset;
7428    }
7429
7430    @Override
7431    public void debug(int depth) {
7432        super.debug(depth);
7433
7434        String output = debugIndent(depth);
7435        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
7436                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
7437                + "} ";
7438
7439        if (mText != null) {
7440
7441            output += "mText=\"" + mText + "\" ";
7442            if (mLayout != null) {
7443                output += "mLayout width=" + mLayout.getWidth()
7444                        + " height=" + mLayout.getHeight();
7445            }
7446        } else {
7447            output += "mText=NULL";
7448        }
7449        Log.d(VIEW_LOG_TAG, output);
7450    }
7451
7452    /**
7453     * Convenience for {@link Selection#getSelectionStart}.
7454     */
7455    @ViewDebug.ExportedProperty(category = "text")
7456    public int getSelectionStart() {
7457        return Selection.getSelectionStart(getText());
7458    }
7459
7460    /**
7461     * Convenience for {@link Selection#getSelectionEnd}.
7462     */
7463    @ViewDebug.ExportedProperty(category = "text")
7464    public int getSelectionEnd() {
7465        return Selection.getSelectionEnd(getText());
7466    }
7467
7468    /**
7469     * Return true iff there is a selection inside this text view.
7470     */
7471    public boolean hasSelection() {
7472        final int selectionStart = getSelectionStart();
7473        final int selectionEnd = getSelectionEnd();
7474
7475        return selectionStart >= 0 && selectionStart != selectionEnd;
7476    }
7477
7478    /**
7479     * Sets the properties of this field (lines, horizontally scrolling,
7480     * transformation method) to be for a single-line input.
7481     *
7482     * @attr ref android.R.styleable#TextView_singleLine
7483     */
7484    public void setSingleLine() {
7485        setSingleLine(true);
7486    }
7487
7488    /**
7489     * Sets the properties of this field to transform input to ALL CAPS
7490     * display. This may use a "small caps" formatting if available.
7491     * This setting will be ignored if this field is editable or selectable.
7492     *
7493     * This call replaces the current transformation method. Disabling this
7494     * will not necessarily restore the previous behavior from before this
7495     * was enabled.
7496     *
7497     * @see #setTransformationMethod(TransformationMethod)
7498     * @attr ref android.R.styleable#TextView_textAllCaps
7499     */
7500    public void setAllCaps(boolean allCaps) {
7501        if (allCaps) {
7502            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
7503        } else {
7504            setTransformationMethod(null);
7505        }
7506    }
7507
7508    /**
7509     * If true, sets the properties of this field (number of lines, horizontally scrolling,
7510     * transformation method) to be for a single-line input; if false, restores these to the default
7511     * conditions.
7512     *
7513     * Note that the default conditions are not necessarily those that were in effect prior this
7514     * method, and you may want to reset these properties to your custom values.
7515     *
7516     * @attr ref android.R.styleable#TextView_singleLine
7517     */
7518    @android.view.RemotableViewMethod
7519    public void setSingleLine(boolean singleLine) {
7520        // Could be used, but may break backward compatibility.
7521        // if (mSingleLine == singleLine) return;
7522        setInputTypeSingleLine(singleLine);
7523        applySingleLine(singleLine, true, true);
7524    }
7525
7526    /**
7527     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
7528     * @param singleLine
7529     */
7530    private void setInputTypeSingleLine(boolean singleLine) {
7531        if (mEditor != null &&
7532                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
7533            if (singleLine) {
7534                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7535            } else {
7536                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7537            }
7538        }
7539    }
7540
7541    private void applySingleLine(boolean singleLine, boolean applyTransformation,
7542            boolean changeMaxLines) {
7543        mSingleLine = singleLine;
7544        if (singleLine) {
7545            setLines(1);
7546            setHorizontallyScrolling(true);
7547            if (applyTransformation) {
7548                setTransformationMethod(SingleLineTransformationMethod.getInstance());
7549            }
7550        } else {
7551            if (changeMaxLines) {
7552                setMaxLines(Integer.MAX_VALUE);
7553            }
7554            setHorizontallyScrolling(false);
7555            if (applyTransformation) {
7556                setTransformationMethod(null);
7557            }
7558        }
7559    }
7560
7561    /**
7562     * Causes words in the text that are longer than the view is wide
7563     * to be ellipsized instead of broken in the middle.  You may also
7564     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
7565     * to constrain the text to a single line.  Use <code>null</code>
7566     * to turn off ellipsizing.
7567     *
7568     * If {@link #setMaxLines} has been used to set two or more lines,
7569     * only {@link android.text.TextUtils.TruncateAt#END} and
7570     * {@link android.text.TextUtils.TruncateAt#MARQUEE} are supported
7571     * (other ellipsizing types will not do anything).
7572     *
7573     * @attr ref android.R.styleable#TextView_ellipsize
7574     */
7575    public void setEllipsize(TextUtils.TruncateAt where) {
7576        // TruncateAt is an enum. != comparison is ok between these singleton objects.
7577        if (mEllipsize != where) {
7578            mEllipsize = where;
7579
7580            if (mLayout != null) {
7581                nullLayouts();
7582                requestLayout();
7583                invalidate();
7584            }
7585        }
7586    }
7587
7588    /**
7589     * Sets how many times to repeat the marquee animation. Only applied if the
7590     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
7591     *
7592     * @see #getMarqueeRepeatLimit()
7593     *
7594     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7595     */
7596    public void setMarqueeRepeatLimit(int marqueeLimit) {
7597        mMarqueeRepeatLimit = marqueeLimit;
7598    }
7599
7600    /**
7601     * Gets the number of times the marquee animation is repeated. Only meaningful if the
7602     * TextView has marquee enabled.
7603     *
7604     * @return the number of times the marquee animation is repeated. -1 if the animation
7605     * repeats indefinitely
7606     *
7607     * @see #setMarqueeRepeatLimit(int)
7608     *
7609     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7610     */
7611    public int getMarqueeRepeatLimit() {
7612        return mMarqueeRepeatLimit;
7613    }
7614
7615    /**
7616     * Returns where, if anywhere, words that are longer than the view
7617     * is wide should be ellipsized.
7618     */
7619    @ViewDebug.ExportedProperty
7620    public TextUtils.TruncateAt getEllipsize() {
7621        return mEllipsize;
7622    }
7623
7624    /**
7625     * Set the TextView so that when it takes focus, all the text is
7626     * selected.
7627     *
7628     * @attr ref android.R.styleable#TextView_selectAllOnFocus
7629     */
7630    @android.view.RemotableViewMethod
7631    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
7632        createEditorIfNeeded();
7633        mEditor.mSelectAllOnFocus = selectAllOnFocus;
7634
7635        if (selectAllOnFocus && !(mText instanceof Spannable)) {
7636            setText(mText, BufferType.SPANNABLE);
7637        }
7638    }
7639
7640    /**
7641     * Set whether the cursor is visible. The default is true. Note that this property only
7642     * makes sense for editable TextView.
7643     *
7644     * @see #isCursorVisible()
7645     *
7646     * @attr ref android.R.styleable#TextView_cursorVisible
7647     */
7648    @android.view.RemotableViewMethod
7649    public void setCursorVisible(boolean visible) {
7650        if (visible && mEditor == null) return; // visible is the default value with no edit data
7651        createEditorIfNeeded();
7652        if (mEditor.mCursorVisible != visible) {
7653            mEditor.mCursorVisible = visible;
7654            invalidate();
7655
7656            mEditor.makeBlink();
7657
7658            // InsertionPointCursorController depends on mCursorVisible
7659            mEditor.prepareCursorControllers();
7660        }
7661    }
7662
7663    /**
7664     * @return whether or not the cursor is visible (assuming this TextView is editable)
7665     *
7666     * @see #setCursorVisible(boolean)
7667     *
7668     * @attr ref android.R.styleable#TextView_cursorVisible
7669     */
7670    public boolean isCursorVisible() {
7671        // true is the default value
7672        return mEditor == null ? true : mEditor.mCursorVisible;
7673    }
7674
7675    private boolean canMarquee() {
7676        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
7677        return width > 0 && (mLayout.getLineWidth(0) > width ||
7678                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
7679                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
7680    }
7681
7682    private void startMarquee() {
7683        // Do not ellipsize EditText
7684        if (getKeyListener() != null) return;
7685
7686        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
7687            return;
7688        }
7689
7690        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
7691                getLineCount() == 1 && canMarquee()) {
7692
7693            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7694                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
7695                final Layout tmp = mLayout;
7696                mLayout = mSavedMarqueeModeLayout;
7697                mSavedMarqueeModeLayout = tmp;
7698                setHorizontalFadingEdgeEnabled(true);
7699                requestLayout();
7700                invalidate();
7701            }
7702
7703            if (mMarquee == null) mMarquee = new Marquee(this);
7704            mMarquee.start(mMarqueeRepeatLimit);
7705        }
7706    }
7707
7708    private void stopMarquee() {
7709        if (mMarquee != null && !mMarquee.isStopped()) {
7710            mMarquee.stop();
7711        }
7712
7713        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
7714            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
7715            final Layout tmp = mSavedMarqueeModeLayout;
7716            mSavedMarqueeModeLayout = mLayout;
7717            mLayout = tmp;
7718            setHorizontalFadingEdgeEnabled(false);
7719            requestLayout();
7720            invalidate();
7721        }
7722    }
7723
7724    private void startStopMarquee(boolean start) {
7725        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7726            if (start) {
7727                startMarquee();
7728            } else {
7729                stopMarquee();
7730            }
7731        }
7732    }
7733
7734    /**
7735     * This method is called when the text is changed, in case any subclasses
7736     * would like to know.
7737     *
7738     * Within <code>text</code>, the <code>lengthAfter</code> characters
7739     * beginning at <code>start</code> have just replaced old text that had
7740     * length <code>lengthBefore</code>. It is an error to attempt to make
7741     * changes to <code>text</code> from this callback.
7742     *
7743     * @param text The text the TextView is displaying
7744     * @param start The offset of the start of the range of the text that was
7745     * modified
7746     * @param lengthBefore The length of the former text that has been replaced
7747     * @param lengthAfter The length of the replacement modified text
7748     */
7749    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
7750        // intentionally empty, template pattern method can be overridden by subclasses
7751    }
7752
7753    /**
7754     * This method is called when the selection has changed, in case any
7755     * subclasses would like to know.
7756     *
7757     * @param selStart The new selection start location.
7758     * @param selEnd The new selection end location.
7759     */
7760    protected void onSelectionChanged(int selStart, int selEnd) {
7761        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
7762    }
7763
7764    /**
7765     * Adds a TextWatcher to the list of those whose methods are called
7766     * whenever this TextView's text changes.
7767     * <p>
7768     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
7769     * not called after {@link #setText} calls.  Now, doing {@link #setText}
7770     * if there are any text changed listeners forces the buffer type to
7771     * Editable if it would not otherwise be and does call this method.
7772     */
7773    public void addTextChangedListener(TextWatcher watcher) {
7774        if (mListeners == null) {
7775            mListeners = new ArrayList<TextWatcher>();
7776        }
7777
7778        mListeners.add(watcher);
7779    }
7780
7781    /**
7782     * Removes the specified TextWatcher from the list of those whose
7783     * methods are called
7784     * whenever this TextView's text changes.
7785     */
7786    public void removeTextChangedListener(TextWatcher watcher) {
7787        if (mListeners != null) {
7788            int i = mListeners.indexOf(watcher);
7789
7790            if (i >= 0) {
7791                mListeners.remove(i);
7792            }
7793        }
7794    }
7795
7796    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
7797        if (mListeners != null) {
7798            final ArrayList<TextWatcher> list = mListeners;
7799            final int count = list.size();
7800            for (int i = 0; i < count; i++) {
7801                list.get(i).beforeTextChanged(text, start, before, after);
7802            }
7803        }
7804
7805        // The spans that are inside or intersect the modified region no longer make sense
7806        removeIntersectingNonAdjacentSpans(start, start + before, SpellCheckSpan.class);
7807        removeIntersectingNonAdjacentSpans(start, start + before, SuggestionSpan.class);
7808    }
7809
7810    // Removes all spans that are inside or actually overlap the start..end range
7811    private <T> void removeIntersectingNonAdjacentSpans(int start, int end, Class<T> type) {
7812        if (!(mText instanceof Editable)) return;
7813        Editable text = (Editable) mText;
7814
7815        T[] spans = text.getSpans(start, end, type);
7816        final int length = spans.length;
7817        for (int i = 0; i < length; i++) {
7818            final int spanStart = text.getSpanStart(spans[i]);
7819            final int spanEnd = text.getSpanEnd(spans[i]);
7820            if (spanEnd == start || spanStart == end) break;
7821            text.removeSpan(spans[i]);
7822        }
7823    }
7824
7825    void removeAdjacentSuggestionSpans(final int pos) {
7826        if (!(mText instanceof Editable)) return;
7827        final Editable text = (Editable) mText;
7828
7829        final SuggestionSpan[] spans = text.getSpans(pos, pos, SuggestionSpan.class);
7830        final int length = spans.length;
7831        for (int i = 0; i < length; i++) {
7832            final int spanStart = text.getSpanStart(spans[i]);
7833            final int spanEnd = text.getSpanEnd(spans[i]);
7834            if (spanEnd == pos || spanStart == pos) {
7835                if (SpellChecker.haveWordBoundariesChanged(text, pos, pos, spanStart, spanEnd)) {
7836                    text.removeSpan(spans[i]);
7837                }
7838            }
7839        }
7840    }
7841
7842    /**
7843     * Not private so it can be called from an inner class without going
7844     * through a thunk.
7845     */
7846    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
7847        if (mListeners != null) {
7848            final ArrayList<TextWatcher> list = mListeners;
7849            final int count = list.size();
7850            for (int i = 0; i < count; i++) {
7851                list.get(i).onTextChanged(text, start, before, after);
7852            }
7853        }
7854
7855        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
7856    }
7857
7858    /**
7859     * Not private so it can be called from an inner class without going
7860     * through a thunk.
7861     */
7862    void sendAfterTextChanged(Editable text) {
7863        if (mListeners != null) {
7864            final ArrayList<TextWatcher> list = mListeners;
7865            final int count = list.size();
7866            for (int i = 0; i < count; i++) {
7867                list.get(i).afterTextChanged(text);
7868            }
7869        }
7870        hideErrorIfUnchanged();
7871    }
7872
7873    void updateAfterEdit() {
7874        invalidate();
7875        int curs = getSelectionStart();
7876
7877        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7878            registerForPreDraw();
7879        }
7880
7881        checkForResize();
7882
7883        if (curs >= 0) {
7884            mHighlightPathBogus = true;
7885            if (mEditor != null) mEditor.makeBlink();
7886            bringPointIntoView(curs);
7887        }
7888    }
7889
7890    /**
7891     * Not private so it can be called from an inner class without going
7892     * through a thunk.
7893     */
7894    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
7895        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7896        if (ims == null || ims.mBatchEditNesting == 0) {
7897            updateAfterEdit();
7898        }
7899        if (ims != null) {
7900            ims.mContentChanged = true;
7901            if (ims.mChangedStart < 0) {
7902                ims.mChangedStart = start;
7903                ims.mChangedEnd = start+before;
7904            } else {
7905                ims.mChangedStart = Math.min(ims.mChangedStart, start);
7906                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
7907            }
7908            ims.mChangedDelta += after-before;
7909        }
7910        resetErrorChangedFlag();
7911        sendOnTextChanged(buffer, start, before, after);
7912        onTextChanged(buffer, start, before, after);
7913    }
7914
7915    /**
7916     * Not private so it can be called from an inner class without going
7917     * through a thunk.
7918     */
7919    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
7920        // XXX Make the start and end move together if this ends up
7921        // spending too much time invalidating.
7922
7923        boolean selChanged = false;
7924        int newSelStart=-1, newSelEnd=-1;
7925
7926        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7927
7928        if (what == Selection.SELECTION_END) {
7929            selChanged = true;
7930            newSelEnd = newStart;
7931
7932            if (oldStart >= 0 || newStart >= 0) {
7933                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
7934                checkForResize();
7935                registerForPreDraw();
7936                if (mEditor != null) mEditor.makeBlink();
7937            }
7938        }
7939
7940        if (what == Selection.SELECTION_START) {
7941            selChanged = true;
7942            newSelStart = newStart;
7943
7944            if (oldStart >= 0 || newStart >= 0) {
7945                int end = Selection.getSelectionEnd(buf);
7946                invalidateCursor(end, oldStart, newStart);
7947            }
7948        }
7949
7950        if (selChanged) {
7951            mHighlightPathBogus = true;
7952            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
7953
7954            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
7955                if (newSelStart < 0) {
7956                    newSelStart = Selection.getSelectionStart(buf);
7957                }
7958                if (newSelEnd < 0) {
7959                    newSelEnd = Selection.getSelectionEnd(buf);
7960                }
7961                onSelectionChanged(newSelStart, newSelEnd);
7962            }
7963        }
7964
7965        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
7966                what instanceof CharacterStyle) {
7967            if (ims == null || ims.mBatchEditNesting == 0) {
7968                invalidate();
7969                mHighlightPathBogus = true;
7970                checkForResize();
7971            } else {
7972                ims.mContentChanged = true;
7973            }
7974            if (mEditor != null) {
7975                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
7976                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
7977            }
7978        }
7979
7980        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
7981            mHighlightPathBogus = true;
7982            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
7983                ims.mSelectionModeChanged = true;
7984            }
7985
7986            if (Selection.getSelectionStart(buf) >= 0) {
7987                if (ims == null || ims.mBatchEditNesting == 0) {
7988                    invalidateCursor();
7989                } else {
7990                    ims.mCursorChanged = true;
7991                }
7992            }
7993        }
7994
7995        if (what instanceof ParcelableSpan) {
7996            // If this is a span that can be sent to a remote process,
7997            // the current extract editor would be interested in it.
7998            if (ims != null && ims.mExtractedTextRequest != null) {
7999                if (ims.mBatchEditNesting != 0) {
8000                    if (oldStart >= 0) {
8001                        if (ims.mChangedStart > oldStart) {
8002                            ims.mChangedStart = oldStart;
8003                        }
8004                        if (ims.mChangedStart > oldEnd) {
8005                            ims.mChangedStart = oldEnd;
8006                        }
8007                    }
8008                    if (newStart >= 0) {
8009                        if (ims.mChangedStart > newStart) {
8010                            ims.mChangedStart = newStart;
8011                        }
8012                        if (ims.mChangedStart > newEnd) {
8013                            ims.mChangedStart = newEnd;
8014                        }
8015                    }
8016                } else {
8017                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
8018                            + oldStart + "-" + oldEnd + ","
8019                            + newStart + "-" + newEnd + " " + what);
8020                    ims.mContentChanged = true;
8021                }
8022            }
8023        }
8024
8025        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
8026                what instanceof SpellCheckSpan) {
8027            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
8028        }
8029    }
8030
8031    /**
8032     * @hide
8033     */
8034    @Override
8035    public void dispatchFinishTemporaryDetach() {
8036        mDispatchTemporaryDetach = true;
8037        super.dispatchFinishTemporaryDetach();
8038        mDispatchTemporaryDetach = false;
8039    }
8040
8041    @Override
8042    public void onStartTemporaryDetach() {
8043        super.onStartTemporaryDetach();
8044        // Only track when onStartTemporaryDetach() is called directly,
8045        // usually because this instance is an editable field in a list
8046        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
8047
8048        // Tell the editor that we are temporarily detached. It can use this to preserve
8049        // selection state as needed.
8050        if (mEditor != null) mEditor.mTemporaryDetach = true;
8051    }
8052
8053    @Override
8054    public void onFinishTemporaryDetach() {
8055        super.onFinishTemporaryDetach();
8056        // Only track when onStartTemporaryDetach() is called directly,
8057        // usually because this instance is an editable field in a list
8058        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
8059        if (mEditor != null) mEditor.mTemporaryDetach = false;
8060    }
8061
8062    @Override
8063    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
8064        if (mTemporaryDetach) {
8065            // If we are temporarily in the detach state, then do nothing.
8066            super.onFocusChanged(focused, direction, previouslyFocusedRect);
8067            return;
8068        }
8069
8070        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
8071
8072        if (focused) {
8073            if (mText instanceof Spannable) {
8074                Spannable sp = (Spannable) mText;
8075                MetaKeyKeyListener.resetMetaState(sp);
8076            }
8077        }
8078
8079        startStopMarquee(focused);
8080
8081        if (mTransformation != null) {
8082            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
8083        }
8084
8085        super.onFocusChanged(focused, direction, previouslyFocusedRect);
8086    }
8087
8088    @Override
8089    public void onWindowFocusChanged(boolean hasWindowFocus) {
8090        super.onWindowFocusChanged(hasWindowFocus);
8091
8092        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
8093
8094        startStopMarquee(hasWindowFocus);
8095    }
8096
8097    @Override
8098    protected void onVisibilityChanged(View changedView, int visibility) {
8099        super.onVisibilityChanged(changedView, visibility);
8100        if (mEditor != null && visibility != VISIBLE) {
8101            mEditor.hideControllers();
8102        }
8103    }
8104
8105    /**
8106     * Use {@link BaseInputConnection#removeComposingSpans
8107     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
8108     * state from this text view.
8109     */
8110    public void clearComposingText() {
8111        if (mText instanceof Spannable) {
8112            BaseInputConnection.removeComposingSpans((Spannable)mText);
8113        }
8114    }
8115
8116    @Override
8117    public void setSelected(boolean selected) {
8118        boolean wasSelected = isSelected();
8119
8120        super.setSelected(selected);
8121
8122        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8123            if (selected) {
8124                startMarquee();
8125            } else {
8126                stopMarquee();
8127            }
8128        }
8129    }
8130
8131    @Override
8132    public boolean onTouchEvent(MotionEvent event) {
8133        final int action = event.getActionMasked();
8134
8135        if (mEditor != null) {
8136            mEditor.onTouchEvent(event);
8137
8138            if (mEditor.mSelectionModifierCursorController != null &&
8139                    mEditor.mSelectionModifierCursorController.isDragAcceleratorActive()) {
8140                return true;
8141            }
8142        }
8143
8144        final boolean superResult = super.onTouchEvent(event);
8145
8146        /*
8147         * Don't handle the release after a long press, because it will
8148         * move the selection away from whatever the menu action was
8149         * trying to affect.
8150         */
8151        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
8152            mEditor.mDiscardNextActionUp = false;
8153            return superResult;
8154        }
8155
8156        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
8157                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
8158
8159         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
8160                && mText instanceof Spannable && mLayout != null) {
8161            boolean handled = false;
8162
8163            if (mMovement != null) {
8164                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
8165            }
8166
8167            final boolean textIsSelectable = isTextSelectable();
8168            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
8169                // The LinkMovementMethod which should handle taps on links has not been installed
8170                // on non editable text that support text selection.
8171                // We reproduce its behavior here to open links for these.
8172                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
8173                        getSelectionEnd(), ClickableSpan.class);
8174
8175                if (links.length > 0) {
8176                    links[0].onClick(this);
8177                    handled = true;
8178                }
8179            }
8180
8181            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
8182                // Show the IME, except when selecting in read-only text.
8183                final InputMethodManager imm = InputMethodManager.peekInstance();
8184                viewClicked(imm);
8185                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
8186                    handled |= imm != null && imm.showSoftInput(this, 0);
8187                }
8188
8189                // The above condition ensures that the mEditor is not null
8190                mEditor.onTouchUpEvent(event);
8191
8192                handled = true;
8193            }
8194
8195            if (handled) {
8196                return true;
8197            }
8198        }
8199
8200        return superResult;
8201    }
8202
8203    @Override
8204    public boolean onGenericMotionEvent(MotionEvent event) {
8205        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8206            try {
8207                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
8208                    return true;
8209                }
8210            } catch (AbstractMethodError ex) {
8211                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
8212                // Ignore its absence in case third party applications implemented the
8213                // interface directly.
8214            }
8215        }
8216        return super.onGenericMotionEvent(event);
8217    }
8218
8219    /**
8220     * @return True iff this TextView contains a text that can be edited, or if this is
8221     * a selectable TextView.
8222     */
8223    boolean isTextEditable() {
8224        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
8225    }
8226
8227    /**
8228     * Returns true, only while processing a touch gesture, if the initial
8229     * touch down event caused focus to move to the text view and as a result
8230     * its selection changed.  Only valid while processing the touch gesture
8231     * of interest, in an editable text view.
8232     */
8233    public boolean didTouchFocusSelect() {
8234        return mEditor != null && mEditor.mTouchFocusSelected;
8235    }
8236
8237    @Override
8238    public void cancelLongPress() {
8239        super.cancelLongPress();
8240        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
8241    }
8242
8243    @Override
8244    public boolean onTrackballEvent(MotionEvent event) {
8245        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8246            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
8247                return true;
8248            }
8249        }
8250
8251        return super.onTrackballEvent(event);
8252    }
8253
8254    public void setScroller(Scroller s) {
8255        mScroller = s;
8256    }
8257
8258    @Override
8259    protected float getLeftFadingEdgeStrength() {
8260        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8261                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8262            if (mMarquee != null && !mMarquee.isStopped()) {
8263                final Marquee marquee = mMarquee;
8264                if (marquee.shouldDrawLeftFade()) {
8265                    final float scroll = marquee.getScroll();
8266                    return scroll / getHorizontalFadingEdgeLength();
8267                } else {
8268                    return 0.0f;
8269                }
8270            } else if (getLineCount() == 1) {
8271                final int layoutDirection = getLayoutDirection();
8272                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8273                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8274                    case Gravity.LEFT:
8275                        return 0.0f;
8276                    case Gravity.RIGHT:
8277                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
8278                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8279                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8280                    case Gravity.CENTER_HORIZONTAL:
8281                    case Gravity.FILL_HORIZONTAL:
8282                        final int textDirection = mLayout.getParagraphDirection(0);
8283                        if (textDirection == Layout.DIR_LEFT_TO_RIGHT) {
8284                            return 0.0f;
8285                        } else {
8286                            return (mLayout.getLineRight(0) - (mRight - mLeft) -
8287                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8288                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8289                        }
8290                }
8291            }
8292        }
8293        return super.getLeftFadingEdgeStrength();
8294    }
8295
8296    @Override
8297    protected float getRightFadingEdgeStrength() {
8298        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8299                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8300            if (mMarquee != null && !mMarquee.isStopped()) {
8301                final Marquee marquee = mMarquee;
8302                final float maxFadeScroll = marquee.getMaxFadeScroll();
8303                final float scroll = marquee.getScroll();
8304                return (maxFadeScroll - scroll) / getHorizontalFadingEdgeLength();
8305            } else if (getLineCount() == 1) {
8306                final int layoutDirection = getLayoutDirection();
8307                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8308                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8309                    case Gravity.LEFT:
8310                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
8311                                getCompoundPaddingRight();
8312                        final float lineWidth = mLayout.getLineWidth(0);
8313                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
8314                    case Gravity.RIGHT:
8315                        return 0.0f;
8316                    case Gravity.CENTER_HORIZONTAL:
8317                    case Gravity.FILL_HORIZONTAL:
8318                        final int textDirection = mLayout.getParagraphDirection(0);
8319                        if (textDirection == Layout.DIR_RIGHT_TO_LEFT) {
8320                            return 0.0f;
8321                        } else {
8322                            return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
8323                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
8324                                getHorizontalFadingEdgeLength();
8325                        }
8326                }
8327            }
8328        }
8329        return super.getRightFadingEdgeStrength();
8330    }
8331
8332    @Override
8333    protected int computeHorizontalScrollRange() {
8334        if (mLayout != null) {
8335            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
8336                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
8337        }
8338
8339        return super.computeHorizontalScrollRange();
8340    }
8341
8342    @Override
8343    protected int computeVerticalScrollRange() {
8344        if (mLayout != null)
8345            return mLayout.getHeight();
8346
8347        return super.computeVerticalScrollRange();
8348    }
8349
8350    @Override
8351    protected int computeVerticalScrollExtent() {
8352        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
8353    }
8354
8355    @Override
8356    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
8357        super.findViewsWithText(outViews, searched, flags);
8358        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
8359                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
8360            String searchedLowerCase = searched.toString().toLowerCase();
8361            String textLowerCase = mText.toString().toLowerCase();
8362            if (textLowerCase.contains(searchedLowerCase)) {
8363                outViews.add(this);
8364            }
8365        }
8366    }
8367
8368    public enum BufferType {
8369        NORMAL, SPANNABLE, EDITABLE,
8370    }
8371
8372    /**
8373     * Returns the TextView_textColor attribute from the TypedArray, if set, or
8374     * the TextAppearance_textColor from the TextView_textAppearance attribute,
8375     * if TextView_textColor was not set directly.
8376     *
8377     * @removed
8378     */
8379    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
8380        if (attrs == null) {
8381            // Preserve behavior prior to removal of this API.
8382            throw new NullPointerException();
8383        }
8384
8385        // It's not safe to use this method from apps. The parameter 'attrs'
8386        // must have been obtained using the TextView filter array which is not
8387        // available to the SDK. As such, we grab a default TypedArray with the
8388        // right filter instead here.
8389        final TypedArray a = context.obtainStyledAttributes(R.styleable.TextView);
8390        ColorStateList colors = a.getColorStateList(R.styleable.TextView_textColor);
8391        if (colors == null) {
8392            final int ap = a.getResourceId(R.styleable.TextView_textAppearance, 0);
8393            if (ap != 0) {
8394                final TypedArray appearance = context.obtainStyledAttributes(
8395                        ap, R.styleable.TextAppearance);
8396                colors = appearance.getColorStateList(R.styleable.TextAppearance_textColor);
8397                appearance.recycle();
8398            }
8399        }
8400        a.recycle();
8401
8402        return colors;
8403    }
8404
8405    /**
8406     * Returns the default color from the TextView_textColor attribute from the
8407     * AttributeSet, if set, or the default color from the
8408     * TextAppearance_textColor from the TextView_textAppearance attribute, if
8409     * TextView_textColor was not set directly.
8410     *
8411     * @removed
8412     */
8413    public static int getTextColor(Context context, TypedArray attrs, int def) {
8414        final ColorStateList colors = getTextColors(context, attrs);
8415        if (colors == null) {
8416            return def;
8417        } else {
8418            return colors.getDefaultColor();
8419        }
8420    }
8421
8422    @Override
8423    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
8424        if (event.hasModifiers(KeyEvent.META_CTRL_ON)) {
8425            // Handle Ctrl-only shortcuts.
8426            switch (keyCode) {
8427            case KeyEvent.KEYCODE_A:
8428                if (canSelectText()) {
8429                    return onTextContextMenuItem(ID_SELECT_ALL);
8430                }
8431                break;
8432            case KeyEvent.KEYCODE_Z:
8433                if (canUndo()) {
8434                    return onTextContextMenuItem(ID_UNDO);
8435                }
8436                break;
8437            case KeyEvent.KEYCODE_X:
8438                if (canCut()) {
8439                    return onTextContextMenuItem(ID_CUT);
8440                }
8441                break;
8442            case KeyEvent.KEYCODE_C:
8443                if (canCopy()) {
8444                    return onTextContextMenuItem(ID_COPY);
8445                }
8446                break;
8447            case KeyEvent.KEYCODE_V:
8448                if (canPaste()) {
8449                    return onTextContextMenuItem(ID_PASTE);
8450                }
8451                break;
8452            }
8453        } else if (event.hasModifiers(KeyEvent.META_CTRL_ON | KeyEvent.META_SHIFT_ON)) {
8454            // Handle Ctrl-Shift shortcuts.
8455            switch (keyCode) {
8456                case KeyEvent.KEYCODE_Z:
8457                    if (canRedo()) {
8458                        return onTextContextMenuItem(ID_REDO);
8459                    }
8460                    break;
8461                case KeyEvent.KEYCODE_V:
8462                    if (canPaste()) {
8463                        return onTextContextMenuItem(ID_PASTE_AS_PLAIN_TEXT);
8464                    }
8465            }
8466        }
8467        return super.onKeyShortcut(keyCode, event);
8468    }
8469
8470    /**
8471     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
8472     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
8473     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
8474     * sufficient.
8475     */
8476    private boolean canSelectText() {
8477        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
8478    }
8479
8480    /**
8481     * Test based on the <i>intrinsic</i> charateristics of the TextView.
8482     * The text must be spannable and the movement method must allow for arbitary selection.
8483     *
8484     * See also {@link #canSelectText()}.
8485     */
8486    boolean textCanBeSelected() {
8487        // prepareCursorController() relies on this method.
8488        // If you change this condition, make sure prepareCursorController is called anywhere
8489        // the value of this condition might be changed.
8490        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
8491        return isTextEditable() ||
8492                (isTextSelectable() && mText instanceof Spannable && isEnabled());
8493    }
8494
8495    private Locale getTextServicesLocale(boolean allowNullLocale) {
8496        // Start fetching the text services locale asynchronously.
8497        updateTextServicesLocaleAsync();
8498        // If !allowNullLocale and there is no cached text services locale, just return the default
8499        // locale.
8500        return (mCurrentSpellCheckerLocaleCache == null && !allowNullLocale) ? Locale.getDefault()
8501                : mCurrentSpellCheckerLocaleCache;
8502    }
8503
8504    /**
8505     * This is a temporary method. Future versions may support multi-locale text.
8506     * Caveat: This method may not return the latest text services locale, but this should be
8507     * acceptable and it's more important to make this method asynchronous.
8508     *
8509     * @return The locale that should be used for a word iterator
8510     * in this TextView, based on the current spell checker settings,
8511     * the current IME's locale, or the system default locale.
8512     * Please note that a word iterator in this TextView is different from another word iterator
8513     * used by SpellChecker.java of TextView. This method should be used for the former.
8514     * @hide
8515     */
8516    // TODO: Support multi-locale
8517    // TODO: Update the text services locale immediately after the keyboard locale is switched
8518    // by catching intent of keyboard switch event
8519    public Locale getTextServicesLocale() {
8520        return getTextServicesLocale(false /* allowNullLocale */);
8521    }
8522
8523    /**
8524     * This is a temporary method. Future versions may support multi-locale text.
8525     * Caveat: This method may not return the latest spell checker locale, but this should be
8526     * acceptable and it's more important to make this method asynchronous.
8527     *
8528     * @return The locale that should be used for a spell checker in this TextView,
8529     * based on the current spell checker settings, the current IME's locale, or the system default
8530     * locale.
8531     * @hide
8532     */
8533    public Locale getSpellCheckerLocale() {
8534        return getTextServicesLocale(true /* allowNullLocale */);
8535    }
8536
8537    private void updateTextServicesLocaleAsync() {
8538        // AsyncTask.execute() uses a serial executor which means we don't have
8539        // to lock around updateTextServicesLocaleLocked() to prevent it from
8540        // being executed n times in parallel.
8541        AsyncTask.execute(new Runnable() {
8542            @Override
8543            public void run() {
8544                updateTextServicesLocaleLocked();
8545            }
8546        });
8547    }
8548
8549    private void updateTextServicesLocaleLocked() {
8550        final TextServicesManager textServicesManager = (TextServicesManager)
8551                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
8552        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
8553        final Locale locale;
8554        if (subtype != null) {
8555            locale = SpellCheckerSubtype.constructLocaleFromString(subtype.getLocale());
8556        } else {
8557            locale = null;
8558        }
8559        mCurrentSpellCheckerLocaleCache = locale;
8560    }
8561
8562    void onLocaleChanged() {
8563        // Will be re-created on demand in getWordIterator with the proper new locale
8564        mEditor.mWordIterator = null;
8565    }
8566
8567    /**
8568     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
8569     * Made available to achieve a consistent behavior.
8570     * @hide
8571     */
8572    public WordIterator getWordIterator() {
8573        if (mEditor != null) {
8574            return mEditor.getWordIterator();
8575        } else {
8576            return null;
8577        }
8578    }
8579
8580    /** @hide */
8581    @Override
8582    public void onPopulateAccessibilityEventInternal(AccessibilityEvent event) {
8583        super.onPopulateAccessibilityEventInternal(event);
8584
8585        final boolean isPassword = hasPasswordTransformationMethod();
8586        if (!isPassword || shouldSpeakPasswordsForAccessibility()) {
8587            final CharSequence text = getTextForAccessibility();
8588            if (!TextUtils.isEmpty(text)) {
8589                event.getText().add(text);
8590            }
8591        }
8592    }
8593
8594    /**
8595     * @return true if the user has explicitly allowed accessibility services
8596     * to speak passwords.
8597     */
8598    private boolean shouldSpeakPasswordsForAccessibility() {
8599        return (Settings.Secure.getIntForUser(mContext.getContentResolver(),
8600                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0,
8601                UserHandle.USER_CURRENT_OR_SELF) == 1);
8602    }
8603
8604    @Override
8605    public CharSequence getAccessibilityClassName() {
8606        return TextView.class.getName();
8607    }
8608
8609    @Override
8610    public void onProvideAssistStructure(ViewAssistStructure structure) {
8611        super.onProvideAssistStructure(structure);
8612        final boolean isPassword = hasPasswordTransformationMethod();
8613        if (!isPassword) {
8614            structure.setText(getText(), getSelectionStart(), getSelectionEnd());
8615            structure.setTextPaint(mTextPaint);
8616        }
8617        structure.setHint(getHint());
8618    }
8619
8620    /** @hide */
8621    @Override
8622    public void onInitializeAccessibilityEventInternal(AccessibilityEvent event) {
8623        super.onInitializeAccessibilityEventInternal(event);
8624
8625        final boolean isPassword = hasPasswordTransformationMethod();
8626        event.setPassword(isPassword);
8627
8628        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
8629            event.setFromIndex(Selection.getSelectionStart(mText));
8630            event.setToIndex(Selection.getSelectionEnd(mText));
8631            event.setItemCount(mText.length());
8632        }
8633    }
8634
8635    /** @hide */
8636    @Override
8637    public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
8638        super.onInitializeAccessibilityNodeInfoInternal(info);
8639
8640        final boolean isPassword = hasPasswordTransformationMethod();
8641        info.setPassword(isPassword);
8642
8643        if (!isPassword || shouldSpeakPasswordsForAccessibility()) {
8644            info.setText(getTextForAccessibility());
8645        }
8646
8647        if (mBufferType == BufferType.EDITABLE) {
8648            info.setEditable(true);
8649        }
8650
8651        if (mEditor != null) {
8652            info.setInputType(mEditor.mInputType);
8653
8654            if (mEditor.mError != null) {
8655                info.setContentInvalid(true);
8656                info.setError(mEditor.mError);
8657            }
8658        }
8659
8660        if (!TextUtils.isEmpty(mText)) {
8661            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
8662            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
8663            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
8664                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
8665                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
8666                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
8667                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
8668        }
8669
8670        if (isFocused()) {
8671            if (canSelectText()) {
8672                info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
8673            }
8674            if (canCopy()) {
8675                info.addAction(AccessibilityNodeInfo.ACTION_COPY);
8676            }
8677            if (canPaste()) {
8678                info.addAction(AccessibilityNodeInfo.ACTION_PASTE);
8679            }
8680            if (canCut()) {
8681                info.addAction(AccessibilityNodeInfo.ACTION_CUT);
8682            }
8683        }
8684
8685        // Check for known input filter types.
8686        final int numFilters = mFilters.length;
8687        for (int i = 0; i < numFilters; i++) {
8688            final InputFilter filter = mFilters[i];
8689            if (filter instanceof InputFilter.LengthFilter) {
8690                info.setMaxTextLength(((InputFilter.LengthFilter) filter).getMax());
8691            }
8692        }
8693
8694        if (!isSingleLine()) {
8695            info.setMultiLine(true);
8696        }
8697    }
8698
8699    /**
8700     * Performs an accessibility action after it has been offered to the
8701     * delegate.
8702     *
8703     * @hide
8704     */
8705    @Override
8706    public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
8707        switch (action) {
8708            case AccessibilityNodeInfo.ACTION_CLICK: {
8709                boolean handled = false;
8710
8711                // Simulate View.onTouchEvent for an ACTION_UP event.
8712                if (isClickable() || isLongClickable()) {
8713                    if (isFocusable() && !isFocused()) {
8714                        requestFocus();
8715                    }
8716
8717                    performClick();
8718                    handled = true;
8719                }
8720
8721                // Simulate TextView.onTouchEvent for an ACTION_UP event.
8722                if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
8723                        && mText instanceof Spannable && mLayout != null
8724                        && (isTextEditable() || isTextSelectable()) && isFocused()) {
8725                    // Show the IME, except when selecting in read-only text.
8726                    final InputMethodManager imm = InputMethodManager.peekInstance();
8727                    viewClicked(imm);
8728                    if (!isTextSelectable() && mEditor.mShowSoftInputOnFocus && imm != null) {
8729                        handled |= imm.showSoftInput(this, 0);
8730                    }
8731                }
8732
8733                return handled;
8734            }
8735            case AccessibilityNodeInfo.ACTION_COPY: {
8736                if (isFocused() && canCopy()) {
8737                    if (onTextContextMenuItem(ID_COPY)) {
8738                        return true;
8739                    }
8740                }
8741            } return false;
8742            case AccessibilityNodeInfo.ACTION_PASTE: {
8743                if (isFocused() && canPaste()) {
8744                    if (onTextContextMenuItem(ID_PASTE)) {
8745                        return true;
8746                    }
8747                }
8748            } return false;
8749            case AccessibilityNodeInfo.ACTION_CUT: {
8750                if (isFocused() && canCut()) {
8751                    if (onTextContextMenuItem(ID_CUT)) {
8752                        return true;
8753                    }
8754                }
8755            } return false;
8756            case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
8757                if (isFocused() && canSelectText()) {
8758                    ensureIterableTextForAccessibilitySelectable();
8759                    CharSequence text = getIterableTextForAccessibility();
8760                    if (text == null) {
8761                        return false;
8762                    }
8763                    final int start = (arguments != null) ? arguments.getInt(
8764                            AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
8765                    final int end = (arguments != null) ? arguments.getInt(
8766                            AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
8767                    if ((getSelectionStart() != start || getSelectionEnd() != end)) {
8768                        // No arguments clears the selection.
8769                        if (start == end && end == -1) {
8770                            Selection.removeSelection((Spannable) text);
8771                            return true;
8772                        }
8773                        if (start >= 0 && start <= end && end <= text.length()) {
8774                            Selection.setSelection((Spannable) text, start, end);
8775                            // Make sure selection mode is engaged.
8776                            if (mEditor != null) {
8777                                mEditor.startSelectionActionModeWithSelection();
8778                            }
8779                            return true;
8780                        }
8781                    }
8782                }
8783            } return false;
8784            case AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY:
8785            case AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY: {
8786                ensureIterableTextForAccessibilitySelectable();
8787                return super.performAccessibilityActionInternal(action, arguments);
8788            }
8789            default: {
8790                return super.performAccessibilityActionInternal(action, arguments);
8791            }
8792        }
8793    }
8794
8795    /** @hide */
8796    @Override
8797    public void sendAccessibilityEventInternal(int eventType) {
8798        // Do not send scroll events since first they are not interesting for
8799        // accessibility and second such events a generated too frequently.
8800        // For details see the implementation of bringTextIntoView().
8801        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
8802            return;
8803        }
8804        super.sendAccessibilityEventInternal(eventType);
8805    }
8806
8807    /**
8808     * Gets the text reported for accessibility purposes.
8809     *
8810     * @return The accessibility text.
8811     *
8812     * @hide
8813     */
8814    public CharSequence getTextForAccessibility() {
8815        CharSequence text = getText();
8816        if (TextUtils.isEmpty(text)) {
8817            text = getHint();
8818        }
8819        return text;
8820    }
8821
8822    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
8823            int fromIndex, int removedCount, int addedCount) {
8824        AccessibilityEvent event =
8825            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
8826        event.setFromIndex(fromIndex);
8827        event.setRemovedCount(removedCount);
8828        event.setAddedCount(addedCount);
8829        event.setBeforeText(beforeText);
8830        sendAccessibilityEventUnchecked(event);
8831    }
8832
8833    /**
8834     * Returns whether this text view is a current input method target.  The
8835     * default implementation just checks with {@link InputMethodManager}.
8836     */
8837    public boolean isInputMethodTarget() {
8838        InputMethodManager imm = InputMethodManager.peekInstance();
8839        return imm != null && imm.isActive(this);
8840    }
8841
8842    static final int ID_SELECT_ALL = android.R.id.selectAll;
8843    static final int ID_UNDO = android.R.id.undo;
8844    static final int ID_REDO = android.R.id.redo;
8845    static final int ID_CUT = android.R.id.cut;
8846    static final int ID_COPY = android.R.id.copy;
8847    static final int ID_PASTE = android.R.id.paste;
8848    static final int ID_PASTE_AS_PLAIN_TEXT = android.R.id.pasteAsPlainText;
8849    static final int ID_REPLACE = android.R.id.replaceText;
8850
8851    /**
8852     * Called when a context menu option for the text view is selected.  Currently
8853     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
8854     * {@link android.R.id#copy} or {@link android.R.id#paste}.
8855     *
8856     * @return true if the context menu item action was performed.
8857     */
8858    public boolean onTextContextMenuItem(int id) {
8859        int min = 0;
8860        int max = mText.length();
8861
8862        if (isFocused()) {
8863            final int selStart = getSelectionStart();
8864            final int selEnd = getSelectionEnd();
8865
8866            min = Math.max(0, Math.min(selStart, selEnd));
8867            max = Math.max(0, Math.max(selStart, selEnd));
8868        }
8869
8870        switch (id) {
8871            case ID_SELECT_ALL:
8872                // This does not enter text selection mode. Text is highlighted, so that it can be
8873                // bulk edited, like selectAllOnFocus does. Returns true even if text is empty.
8874                selectAllText();
8875                return true;
8876
8877            case ID_UNDO:
8878                if (mEditor != null) {
8879                    mEditor.undo();
8880                }
8881                return true;  // Returns true even if nothing was undone.
8882
8883            case ID_REDO:
8884                if (mEditor != null) {
8885                    mEditor.redo();
8886                }
8887                return true;  // Returns true even if nothing was undone.
8888
8889            case ID_PASTE:
8890                paste(min, max, true /* withFormatting */);
8891                return true;
8892
8893            case ID_PASTE_AS_PLAIN_TEXT:
8894                paste(min, max, false /* withFormatting */);
8895                return true;
8896
8897            case ID_CUT:
8898                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
8899                deleteText_internal(min, max);
8900                stopSelectionActionMode();
8901                return true;
8902
8903            case ID_COPY:
8904                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
8905                stopSelectionActionMode();
8906                return true;
8907        }
8908        return false;
8909    }
8910
8911    CharSequence getTransformedText(int start, int end) {
8912        return removeSuggestionSpans(mTransformed.subSequence(start, end));
8913    }
8914
8915    @Override
8916    public boolean performLongClick() {
8917        boolean handled = false;
8918
8919        if (super.performLongClick()) {
8920            handled = true;
8921        }
8922
8923        if (mEditor != null) {
8924            handled |= mEditor.performLongClick(handled);
8925        }
8926
8927        if (handled) {
8928            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
8929            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
8930        }
8931
8932        return handled;
8933    }
8934
8935    @Override
8936    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
8937        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
8938        if (mEditor != null) {
8939            mEditor.onScrollChanged();
8940        }
8941    }
8942
8943    /**
8944     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
8945     * by the IME or by the spell checker as the user types. This is done by adding
8946     * {@link SuggestionSpan}s to the text.
8947     *
8948     * When suggestions are enabled (default), this list of suggestions will be displayed when the
8949     * user asks for them on these parts of the text. This value depends on the inputType of this
8950     * TextView.
8951     *
8952     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
8953     *
8954     * In addition, the type variation must be one of
8955     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
8956     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
8957     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
8958     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
8959     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
8960     *
8961     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
8962     *
8963     * @return true if the suggestions popup window is enabled, based on the inputType.
8964     */
8965    public boolean isSuggestionsEnabled() {
8966        if (mEditor == null) return false;
8967        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
8968            return false;
8969        }
8970        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
8971
8972        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
8973        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
8974                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
8975                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
8976                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
8977                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
8978    }
8979
8980    /**
8981     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
8982     * selection is initiated in this View.
8983     *
8984     * The standard implementation populates the menu with a subset of Select All, Cut, Copy and
8985     * Paste actions, depending on what this View supports.
8986     *
8987     * A custom implementation can add new entries in the default menu in its
8988     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The
8989     * default actions can also be removed from the menu using
8990     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
8991     * {@link android.R.id#cut}, {@link android.R.id#copy} or {@link android.R.id#paste} ids as
8992     * parameters.
8993     *
8994     * Returning false from
8995     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will prevent
8996     * the action mode from being started.
8997     *
8998     * Action click events should be handled by the custom implementation of
8999     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
9000     *
9001     * Note that text selection mode is not started when a TextView receives focus and the
9002     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
9003     * that case, to allow for quick replacement.
9004     */
9005    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
9006        createEditorIfNeeded();
9007        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
9008    }
9009
9010    /**
9011     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
9012     *
9013     * @return The current custom selection callback.
9014     */
9015    public ActionMode.Callback getCustomSelectionActionModeCallback() {
9016        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
9017    }
9018
9019    /**
9020     * @hide
9021     */
9022    protected void stopSelectionActionMode() {
9023        if (mEditor != null) {
9024            mEditor.stopSelectionActionMode();
9025        }
9026    }
9027
9028    boolean canUndo() {
9029        return mEditor != null && mEditor.canUndo();
9030    }
9031
9032    boolean canRedo() {
9033        return mEditor != null && mEditor.canRedo();
9034    }
9035
9036    boolean canCut() {
9037        if (hasPasswordTransformationMethod()) {
9038            return false;
9039        }
9040
9041        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
9042                mEditor.mKeyListener != null) {
9043            return true;
9044        }
9045
9046        return false;
9047    }
9048
9049    boolean canCopy() {
9050        if (hasPasswordTransformationMethod()) {
9051            return false;
9052        }
9053
9054        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9055            return true;
9056        }
9057
9058        return false;
9059    }
9060
9061    boolean canPaste() {
9062        return (mText instanceof Editable &&
9063                mEditor != null && mEditor.mKeyListener != null &&
9064                getSelectionStart() >= 0 &&
9065                getSelectionEnd() >= 0 &&
9066                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
9067                hasPrimaryClip());
9068    }
9069
9070    boolean selectAllText() {
9071        final int length = mText.length();
9072        Selection.setSelection((Spannable) mText, 0, length);
9073        return length > 0;
9074    }
9075
9076    /**
9077     * Paste clipboard content between min and max positions.
9078     */
9079    private void paste(int min, int max, boolean withFormatting) {
9080        ClipboardManager clipboard =
9081            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
9082        ClipData clip = clipboard.getPrimaryClip();
9083        if (clip != null) {
9084            boolean didFirst = false;
9085            for (int i=0; i<clip.getItemCount(); i++) {
9086                final CharSequence paste;
9087                if (withFormatting) {
9088                    paste = clip.getItemAt(i).coerceToStyledText(getContext());
9089                } else {
9090                    // Get an item as text and remove all spans by toString().
9091                    final CharSequence text = clip.getItemAt(i).coerceToText(getContext());
9092                    paste = (text instanceof Spanned) ? text.toString() : text;
9093                }
9094                if (paste != null) {
9095                    if (!didFirst) {
9096                        Selection.setSelection((Spannable) mText, max);
9097                        ((Editable) mText).replace(min, max, paste);
9098                        didFirst = true;
9099                    } else {
9100                        ((Editable) mText).insert(getSelectionEnd(), "\n");
9101                        ((Editable) mText).insert(getSelectionEnd(), paste);
9102                    }
9103                }
9104            }
9105            stopSelectionActionMode();
9106            LAST_CUT_OR_COPY_TIME = 0;
9107        }
9108    }
9109
9110    private void setPrimaryClip(ClipData clip) {
9111        ClipboardManager clipboard = (ClipboardManager) getContext().
9112                getSystemService(Context.CLIPBOARD_SERVICE);
9113        clipboard.setPrimaryClip(clip);
9114        LAST_CUT_OR_COPY_TIME = SystemClock.uptimeMillis();
9115    }
9116
9117    /**
9118     * Get the character offset closest to the specified absolute position. A typical use case is to
9119     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
9120     *
9121     * @param x The horizontal absolute position of a point on screen
9122     * @param y The vertical absolute position of a point on screen
9123     * @return the character offset for the character whose position is closest to the specified
9124     *  position. Returns -1 if there is no layout.
9125     */
9126    public int getOffsetForPosition(float x, float y) {
9127        if (getLayout() == null) return -1;
9128        final int line = getLineAtCoordinate(y);
9129        final int offset = getOffsetAtCoordinate(line, x);
9130        return offset;
9131    }
9132
9133    float convertToLocalHorizontalCoordinate(float x) {
9134        x -= getTotalPaddingLeft();
9135        // Clamp the position to inside of the view.
9136        x = Math.max(0.0f, x);
9137        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
9138        x += getScrollX();
9139        return x;
9140    }
9141
9142    int getLineAtCoordinate(float y) {
9143        y -= getTotalPaddingTop();
9144        // Clamp the position to inside of the view.
9145        y = Math.max(0.0f, y);
9146        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
9147        y += getScrollY();
9148        return getLayout().getLineForVertical((int) y);
9149    }
9150
9151    int getOffsetAtCoordinate(int line, float x) {
9152        x = convertToLocalHorizontalCoordinate(x);
9153        return getLayout().getOffsetForHorizontal(line, x);
9154    }
9155
9156    @Override
9157    public boolean onDragEvent(DragEvent event) {
9158        switch (event.getAction()) {
9159            case DragEvent.ACTION_DRAG_STARTED:
9160                return mEditor != null && mEditor.hasInsertionController();
9161
9162            case DragEvent.ACTION_DRAG_ENTERED:
9163                TextView.this.requestFocus();
9164                return true;
9165
9166            case DragEvent.ACTION_DRAG_LOCATION:
9167                final int offset = getOffsetForPosition(event.getX(), event.getY());
9168                Selection.setSelection((Spannable)mText, offset);
9169                return true;
9170
9171            case DragEvent.ACTION_DROP:
9172                if (mEditor != null) mEditor.onDrop(event);
9173                return true;
9174
9175            case DragEvent.ACTION_DRAG_ENDED:
9176            case DragEvent.ACTION_DRAG_EXITED:
9177            default:
9178                return true;
9179        }
9180    }
9181
9182    boolean isInBatchEditMode() {
9183        if (mEditor == null) return false;
9184        final Editor.InputMethodState ims = mEditor.mInputMethodState;
9185        if (ims != null) {
9186            return ims.mBatchEditNesting > 0;
9187        }
9188        return mEditor.mInBatchEditControllers;
9189    }
9190
9191    @Override
9192    public void onRtlPropertiesChanged(int layoutDirection) {
9193        super.onRtlPropertiesChanged(layoutDirection);
9194
9195        mTextDir = getTextDirectionHeuristic();
9196
9197        if (mLayout != null) {
9198            checkForRelayout();
9199        }
9200    }
9201
9202    TextDirectionHeuristic getTextDirectionHeuristic() {
9203        if (hasPasswordTransformationMethod()) {
9204            // passwords fields should be LTR
9205            return TextDirectionHeuristics.LTR;
9206        }
9207
9208        // Always need to resolve layout direction first
9209        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
9210
9211        // Now, we can select the heuristic
9212        switch (getTextDirection()) {
9213            default:
9214            case TEXT_DIRECTION_FIRST_STRONG:
9215                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
9216                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
9217            case TEXT_DIRECTION_ANY_RTL:
9218                return TextDirectionHeuristics.ANYRTL_LTR;
9219            case TEXT_DIRECTION_LTR:
9220                return TextDirectionHeuristics.LTR;
9221            case TEXT_DIRECTION_RTL:
9222                return TextDirectionHeuristics.RTL;
9223            case TEXT_DIRECTION_LOCALE:
9224                return TextDirectionHeuristics.LOCALE;
9225        }
9226    }
9227
9228    /**
9229     * @hide
9230     */
9231    @Override
9232    public void onResolveDrawables(int layoutDirection) {
9233        // No need to resolve twice
9234        if (mLastLayoutDirection == layoutDirection) {
9235            return;
9236        }
9237        mLastLayoutDirection = layoutDirection;
9238
9239        // Resolve drawables
9240        if (mDrawables != null) {
9241            mDrawables.resolveWithLayoutDirection(layoutDirection);
9242        }
9243    }
9244
9245    /**
9246     * @hide
9247     */
9248    protected void resetResolvedDrawables() {
9249        super.resetResolvedDrawables();
9250        mLastLayoutDirection = -1;
9251    }
9252
9253    /**
9254     * @hide
9255     */
9256    protected void viewClicked(InputMethodManager imm) {
9257        if (imm != null) {
9258            imm.viewClicked(this);
9259        }
9260    }
9261
9262    /**
9263     * Deletes the range of text [start, end[.
9264     * @hide
9265     */
9266    protected void deleteText_internal(int start, int end) {
9267        ((Editable) mText).delete(start, end);
9268    }
9269
9270    /**
9271     * Replaces the range of text [start, end[ by replacement text
9272     * @hide
9273     */
9274    protected void replaceText_internal(int start, int end, CharSequence text) {
9275        ((Editable) mText).replace(start, end, text);
9276    }
9277
9278    /**
9279     * Sets a span on the specified range of text
9280     * @hide
9281     */
9282    protected void setSpan_internal(Object span, int start, int end, int flags) {
9283        ((Editable) mText).setSpan(span, start, end, flags);
9284    }
9285
9286    /**
9287     * Moves the cursor to the specified offset position in text
9288     * @hide
9289     */
9290    protected void setCursorPosition_internal(int start, int end) {
9291        Selection.setSelection(((Editable) mText), start, end);
9292    }
9293
9294    /**
9295     * An Editor should be created as soon as any of the editable-specific fields (grouped
9296     * inside the Editor object) is assigned to a non-default value.
9297     * This method will create the Editor if needed.
9298     *
9299     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
9300     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
9301     * Editor for backward compatibility, as soon as one of these fields is assigned.
9302     *
9303     * Also note that for performance reasons, the mEditor is created when needed, but not
9304     * reset when no more edit-specific fields are needed.
9305     */
9306    private void createEditorIfNeeded() {
9307        if (mEditor == null) {
9308            mEditor = new Editor(this);
9309        }
9310    }
9311
9312    /**
9313     * @hide
9314     */
9315    @Override
9316    public CharSequence getIterableTextForAccessibility() {
9317        return mText;
9318    }
9319
9320    private void ensureIterableTextForAccessibilitySelectable() {
9321        if (!(mText instanceof Spannable)) {
9322            setText(mText, BufferType.SPANNABLE);
9323        }
9324    }
9325
9326    /**
9327     * @hide
9328     */
9329    @Override
9330    public TextSegmentIterator getIteratorForGranularity(int granularity) {
9331        switch (granularity) {
9332            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
9333                Spannable text = (Spannable) getIterableTextForAccessibility();
9334                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9335                    AccessibilityIterators.LineTextSegmentIterator iterator =
9336                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
9337                    iterator.initialize(text, getLayout());
9338                    return iterator;
9339                }
9340            } break;
9341            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
9342                Spannable text = (Spannable) getIterableTextForAccessibility();
9343                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9344                    AccessibilityIterators.PageTextSegmentIterator iterator =
9345                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
9346                    iterator.initialize(this);
9347                    return iterator;
9348                }
9349            } break;
9350        }
9351        return super.getIteratorForGranularity(granularity);
9352    }
9353
9354    /**
9355     * @hide
9356     */
9357    @Override
9358    public int getAccessibilitySelectionStart() {
9359        return getSelectionStart();
9360    }
9361
9362    /**
9363     * @hide
9364     */
9365    public boolean isAccessibilitySelectionExtendable() {
9366        return true;
9367    }
9368
9369    /**
9370     * @hide
9371     */
9372    @Override
9373    public int getAccessibilitySelectionEnd() {
9374        return getSelectionEnd();
9375    }
9376
9377    /**
9378     * @hide
9379     */
9380    @Override
9381    public void setAccessibilitySelection(int start, int end) {
9382        if (getAccessibilitySelectionStart() == start
9383                && getAccessibilitySelectionEnd() == end) {
9384            return;
9385        }
9386        // Hide all selection controllers used for adjusting selection
9387        // since we are doing so explicitlty by other means and these
9388        // controllers interact with how selection behaves.
9389        if (mEditor != null) {
9390            mEditor.hideControllers();
9391        }
9392        CharSequence text = getIterableTextForAccessibility();
9393        if (Math.min(start, end) >= 0 && Math.max(start, end) <= text.length()) {
9394            Selection.setSelection((Spannable) text, start, end);
9395        } else {
9396            Selection.removeSelection((Spannable) text);
9397        }
9398    }
9399
9400    /**
9401     * User interface state that is stored by TextView for implementing
9402     * {@link View#onSaveInstanceState}.
9403     */
9404    public static class SavedState extends BaseSavedState {
9405        int selStart;
9406        int selEnd;
9407        CharSequence text;
9408        boolean frozenWithFocus;
9409        CharSequence error;
9410        ParcelableParcel editorState;  // Optional state from Editor.
9411
9412        SavedState(Parcelable superState) {
9413            super(superState);
9414        }
9415
9416        @Override
9417        public void writeToParcel(Parcel out, int flags) {
9418            super.writeToParcel(out, flags);
9419            out.writeInt(selStart);
9420            out.writeInt(selEnd);
9421            out.writeInt(frozenWithFocus ? 1 : 0);
9422            TextUtils.writeToParcel(text, out, flags);
9423
9424            if (error == null) {
9425                out.writeInt(0);
9426            } else {
9427                out.writeInt(1);
9428                TextUtils.writeToParcel(error, out, flags);
9429            }
9430
9431            if (editorState == null) {
9432                out.writeInt(0);
9433            } else {
9434                out.writeInt(1);
9435                editorState.writeToParcel(out, flags);
9436            }
9437        }
9438
9439        @Override
9440        public String toString() {
9441            String str = "TextView.SavedState{"
9442                    + Integer.toHexString(System.identityHashCode(this))
9443                    + " start=" + selStart + " end=" + selEnd;
9444            if (text != null) {
9445                str += " text=" + text;
9446            }
9447            return str + "}";
9448        }
9449
9450        @SuppressWarnings("hiding")
9451        public static final Parcelable.Creator<SavedState> CREATOR
9452                = new Parcelable.Creator<SavedState>() {
9453            public SavedState createFromParcel(Parcel in) {
9454                return new SavedState(in);
9455            }
9456
9457            public SavedState[] newArray(int size) {
9458                return new SavedState[size];
9459            }
9460        };
9461
9462        private SavedState(Parcel in) {
9463            super(in);
9464            selStart = in.readInt();
9465            selEnd = in.readInt();
9466            frozenWithFocus = (in.readInt() != 0);
9467            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
9468
9469            if (in.readInt() != 0) {
9470                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
9471            }
9472
9473            if (in.readInt() != 0) {
9474                editorState = ParcelableParcel.CREATOR.createFromParcel(in);
9475            }
9476        }
9477    }
9478
9479    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
9480        private char[] mChars;
9481        private int mStart, mLength;
9482
9483        public CharWrapper(char[] chars, int start, int len) {
9484            mChars = chars;
9485            mStart = start;
9486            mLength = len;
9487        }
9488
9489        /* package */ void set(char[] chars, int start, int len) {
9490            mChars = chars;
9491            mStart = start;
9492            mLength = len;
9493        }
9494
9495        public int length() {
9496            return mLength;
9497        }
9498
9499        public char charAt(int off) {
9500            return mChars[off + mStart];
9501        }
9502
9503        @Override
9504        public String toString() {
9505            return new String(mChars, mStart, mLength);
9506        }
9507
9508        public CharSequence subSequence(int start, int end) {
9509            if (start < 0 || end < 0 || start > mLength || end > mLength) {
9510                throw new IndexOutOfBoundsException(start + ", " + end);
9511            }
9512
9513            return new String(mChars, start + mStart, end - start);
9514        }
9515
9516        public void getChars(int start, int end, char[] buf, int off) {
9517            if (start < 0 || end < 0 || start > mLength || end > mLength) {
9518                throw new IndexOutOfBoundsException(start + ", " + end);
9519            }
9520
9521            System.arraycopy(mChars, start + mStart, buf, off, end - start);
9522        }
9523
9524        public void drawText(Canvas c, int start, int end,
9525                             float x, float y, Paint p) {
9526            c.drawText(mChars, start + mStart, end - start, x, y, p);
9527        }
9528
9529        public void drawTextRun(Canvas c, int start, int end,
9530                int contextStart, int contextEnd, float x, float y, boolean isRtl, Paint p) {
9531            int count = end - start;
9532            int contextCount = contextEnd - contextStart;
9533            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
9534                    contextCount, x, y, isRtl, p);
9535        }
9536
9537        public float measureText(int start, int end, Paint p) {
9538            return p.measureText(mChars, start + mStart, end - start);
9539        }
9540
9541        public int getTextWidths(int start, int end, float[] widths, Paint p) {
9542            return p.getTextWidths(mChars, start + mStart, end - start, widths);
9543        }
9544
9545        public float getTextRunAdvances(int start, int end, int contextStart,
9546                int contextEnd, boolean isRtl, float[] advances, int advancesIndex,
9547                Paint p) {
9548            int count = end - start;
9549            int contextCount = contextEnd - contextStart;
9550            return p.getTextRunAdvances(mChars, start + mStart, count,
9551                    contextStart + mStart, contextCount, isRtl, advances,
9552                    advancesIndex);
9553        }
9554
9555        public int getTextRunCursor(int contextStart, int contextEnd, int dir,
9556                int offset, int cursorOpt, Paint p) {
9557            int contextCount = contextEnd - contextStart;
9558            return p.getTextRunCursor(mChars, contextStart + mStart,
9559                    contextCount, dir, offset + mStart, cursorOpt);
9560        }
9561    }
9562
9563    private static final class Marquee {
9564        // TODO: Add an option to configure this
9565        private static final float MARQUEE_DELTA_MAX = 0.07f;
9566        private static final int MARQUEE_DELAY = 1200;
9567        private static final int MARQUEE_DP_PER_SECOND = 30;
9568
9569        private static final byte MARQUEE_STOPPED = 0x0;
9570        private static final byte MARQUEE_STARTING = 0x1;
9571        private static final byte MARQUEE_RUNNING = 0x2;
9572
9573        private final WeakReference<TextView> mView;
9574        private final Choreographer mChoreographer;
9575
9576        private byte mStatus = MARQUEE_STOPPED;
9577        private final float mPixelsPerSecond;
9578        private float mMaxScroll;
9579        private float mMaxFadeScroll;
9580        private float mGhostStart;
9581        private float mGhostOffset;
9582        private float mFadeStop;
9583        private int mRepeatLimit;
9584
9585        private float mScroll;
9586        private long mLastAnimationMs;
9587
9588        Marquee(TextView v) {
9589            final float density = v.getContext().getResources().getDisplayMetrics().density;
9590            mPixelsPerSecond = MARQUEE_DP_PER_SECOND * density;
9591            mView = new WeakReference<TextView>(v);
9592            mChoreographer = Choreographer.getInstance();
9593        }
9594
9595        private Choreographer.FrameCallback mTickCallback = new Choreographer.FrameCallback() {
9596            @Override
9597            public void doFrame(long frameTimeNanos) {
9598                tick();
9599            }
9600        };
9601
9602        private Choreographer.FrameCallback mStartCallback = new Choreographer.FrameCallback() {
9603            @Override
9604            public void doFrame(long frameTimeNanos) {
9605                mStatus = MARQUEE_RUNNING;
9606                mLastAnimationMs = mChoreographer.getFrameTime();
9607                tick();
9608            }
9609        };
9610
9611        private Choreographer.FrameCallback mRestartCallback = new Choreographer.FrameCallback() {
9612            @Override
9613            public void doFrame(long frameTimeNanos) {
9614                if (mStatus == MARQUEE_RUNNING) {
9615                    if (mRepeatLimit >= 0) {
9616                        mRepeatLimit--;
9617                    }
9618                    start(mRepeatLimit);
9619                }
9620            }
9621        };
9622
9623        void tick() {
9624            if (mStatus != MARQUEE_RUNNING) {
9625                return;
9626            }
9627
9628            mChoreographer.removeFrameCallback(mTickCallback);
9629
9630            final TextView textView = mView.get();
9631            if (textView != null && (textView.isFocused() || textView.isSelected())) {
9632                long currentMs = mChoreographer.getFrameTime();
9633                long deltaMs = currentMs - mLastAnimationMs;
9634                mLastAnimationMs = currentMs;
9635                float deltaPx = deltaMs / 1000f * mPixelsPerSecond;
9636                mScroll += deltaPx;
9637                if (mScroll > mMaxScroll) {
9638                    mScroll = mMaxScroll;
9639                    mChoreographer.postFrameCallbackDelayed(mRestartCallback, MARQUEE_DELAY);
9640                } else {
9641                    mChoreographer.postFrameCallback(mTickCallback);
9642                }
9643                textView.invalidate();
9644            }
9645        }
9646
9647        void stop() {
9648            mStatus = MARQUEE_STOPPED;
9649            mChoreographer.removeFrameCallback(mStartCallback);
9650            mChoreographer.removeFrameCallback(mRestartCallback);
9651            mChoreographer.removeFrameCallback(mTickCallback);
9652            resetScroll();
9653        }
9654
9655        private void resetScroll() {
9656            mScroll = 0.0f;
9657            final TextView textView = mView.get();
9658            if (textView != null) textView.invalidate();
9659        }
9660
9661        void start(int repeatLimit) {
9662            if (repeatLimit == 0) {
9663                stop();
9664                return;
9665            }
9666            mRepeatLimit = repeatLimit;
9667            final TextView textView = mView.get();
9668            if (textView != null && textView.mLayout != null) {
9669                mStatus = MARQUEE_STARTING;
9670                mScroll = 0.0f;
9671                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
9672                        textView.getCompoundPaddingRight();
9673                final float lineWidth = textView.mLayout.getLineWidth(0);
9674                final float gap = textWidth / 3.0f;
9675                mGhostStart = lineWidth - textWidth + gap;
9676                mMaxScroll = mGhostStart + textWidth;
9677                mGhostOffset = lineWidth + gap;
9678                mFadeStop = lineWidth + textWidth / 6.0f;
9679                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
9680
9681                textView.invalidate();
9682                mChoreographer.postFrameCallback(mStartCallback);
9683            }
9684        }
9685
9686        float getGhostOffset() {
9687            return mGhostOffset;
9688        }
9689
9690        float getScroll() {
9691            return mScroll;
9692        }
9693
9694        float getMaxFadeScroll() {
9695            return mMaxFadeScroll;
9696        }
9697
9698        boolean shouldDrawLeftFade() {
9699            return mScroll <= mFadeStop;
9700        }
9701
9702        boolean shouldDrawGhost() {
9703            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
9704        }
9705
9706        boolean isRunning() {
9707            return mStatus == MARQUEE_RUNNING;
9708        }
9709
9710        boolean isStopped() {
9711            return mStatus == MARQUEE_STOPPED;
9712        }
9713    }
9714
9715    private class ChangeWatcher implements TextWatcher, SpanWatcher {
9716
9717        private CharSequence mBeforeText;
9718
9719        public void beforeTextChanged(CharSequence buffer, int start,
9720                                      int before, int after) {
9721            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
9722                    + " before=" + before + " after=" + after + ": " + buffer);
9723
9724            if (AccessibilityManager.getInstance(mContext).isEnabled()
9725                    && ((!isPasswordInputType(getInputType()) && !hasPasswordTransformationMethod())
9726                            || shouldSpeakPasswordsForAccessibility())) {
9727                mBeforeText = buffer.toString();
9728            }
9729
9730            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
9731        }
9732
9733        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
9734            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
9735                    + " before=" + before + " after=" + after + ": " + buffer);
9736            TextView.this.handleTextChanged(buffer, start, before, after);
9737
9738            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
9739                    (isFocused() || isSelected() && isShown())) {
9740                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
9741                mBeforeText = null;
9742            }
9743        }
9744
9745        public void afterTextChanged(Editable buffer) {
9746            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
9747            TextView.this.sendAfterTextChanged(buffer);
9748
9749            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
9750                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
9751            }
9752        }
9753
9754        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
9755            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
9756                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
9757            TextView.this.spanChange(buf, what, s, st, e, en);
9758        }
9759
9760        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
9761            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
9762                    + " what=" + what + ": " + buf);
9763            TextView.this.spanChange(buf, what, -1, s, -1, e);
9764        }
9765
9766        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
9767            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
9768                    + " what=" + what + ": " + buf);
9769            TextView.this.spanChange(buf, what, s, -1, e, -1);
9770        }
9771    }
9772}
9773