TextView.java revision 8f5de8c6c0d5da3c81670b72d5b412acea502d22 
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.NonNull;
21import android.annotation.Nullable;
22import android.content.ClipData;
23import android.content.ClipboardManager;
24import android.content.Context;
25import android.content.UndoManager;
26import android.content.res.ColorStateList;
27import android.content.res.CompatibilityInfo;
28import android.content.res.Resources;
29import android.content.res.TypedArray;
30import android.content.res.XmlResourceParser;
31import android.graphics.Canvas;
32import android.graphics.Insets;
33import android.graphics.Paint;
34import android.graphics.Path;
35import android.graphics.Rect;
36import android.graphics.RectF;
37import android.graphics.Typeface;
38import android.graphics.drawable.Drawable;
39import android.inputmethodservice.ExtractEditText;
40import android.os.AsyncTask;
41import android.os.Bundle;
42import android.os.Parcel;
43import android.os.Parcelable;
44import android.os.SystemClock;
45import android.provider.Settings;
46import android.text.BoringLayout;
47import android.text.DynamicLayout;
48import android.text.Editable;
49import android.text.GetChars;
50import android.text.GraphicsOperations;
51import android.text.InputFilter;
52import android.text.InputType;
53import android.text.Layout;
54import android.text.ParcelableSpan;
55import android.text.Selection;
56import android.text.SpanWatcher;
57import android.text.Spannable;
58import android.text.SpannableString;
59import android.text.SpannableStringBuilder;
60import android.text.Spanned;
61import android.text.SpannedString;
62import android.text.StaticLayout;
63import android.text.TextDirectionHeuristic;
64import android.text.TextDirectionHeuristics;
65import android.text.TextPaint;
66import android.text.TextUtils;
67import android.text.TextUtils.TruncateAt;
68import android.text.TextWatcher;
69import android.text.method.AllCapsTransformationMethod;
70import android.text.method.ArrowKeyMovementMethod;
71import android.text.method.DateKeyListener;
72import android.text.method.DateTimeKeyListener;
73import android.text.method.DialerKeyListener;
74import android.text.method.DigitsKeyListener;
75import android.text.method.KeyListener;
76import android.text.method.LinkMovementMethod;
77import android.text.method.MetaKeyKeyListener;
78import android.text.method.MovementMethod;
79import android.text.method.PasswordTransformationMethod;
80import android.text.method.SingleLineTransformationMethod;
81import android.text.method.TextKeyListener;
82import android.text.method.TimeKeyListener;
83import android.text.method.TransformationMethod;
84import android.text.method.TransformationMethod2;
85import android.text.method.WordIterator;
86import android.text.style.CharacterStyle;
87import android.text.style.ClickableSpan;
88import android.text.style.ParagraphStyle;
89import android.text.style.SpellCheckSpan;
90import android.text.style.SuggestionSpan;
91import android.text.style.URLSpan;
92import android.text.style.UpdateAppearance;
93import android.text.util.Linkify;
94import android.util.AttributeSet;
95import android.util.Log;
96import android.util.TypedValue;
97import android.view.AccessibilityIterators.TextSegmentIterator;
98import android.view.ActionMode;
99import android.view.Choreographer;
100import android.view.DragEvent;
101import android.view.Gravity;
102import android.view.HapticFeedbackConstants;
103import android.view.KeyCharacterMap;
104import android.view.KeyEvent;
105import android.view.Menu;
106import android.view.MenuItem;
107import android.view.MotionEvent;
108import android.view.View;
109import android.view.ViewConfiguration;
110import android.view.ViewDebug;
111import android.view.ViewGroup.LayoutParams;
112import android.view.ViewRootImpl;
113import android.view.ViewTreeObserver;
114import android.view.accessibility.AccessibilityEvent;
115import android.view.accessibility.AccessibilityManager;
116import android.view.accessibility.AccessibilityNodeInfo;
117import android.view.animation.AnimationUtils;
118import android.view.inputmethod.BaseInputConnection;
119import android.view.inputmethod.CompletionInfo;
120import android.view.inputmethod.CorrectionInfo;
121import android.view.inputmethod.EditorInfo;
122import android.view.inputmethod.ExtractedText;
123import android.view.inputmethod.ExtractedTextRequest;
124import android.view.inputmethod.InputConnection;
125import android.view.inputmethod.InputMethodManager;
126import android.view.textservice.SpellCheckerSubtype;
127import android.view.textservice.TextServicesManager;
128import android.widget.RemoteViews.RemoteView;
129
130import com.android.internal.util.FastMath;
131import com.android.internal.widget.EditableInputConnection;
132
133import org.xmlpull.v1.XmlPullParserException;
134
135import java.io.IOException;
136import java.lang.ref.WeakReference;
137import java.util.ArrayList;
138import java.util.Locale;
139
140import static android.os.Build.VERSION_CODES.JELLY_BEAN_MR1;
141
142/**
143 * Displays text to the user and optionally allows them to edit it.  A TextView
144 * is a complete text editor, however the basic class is configured to not
145 * allow editing; see {@link EditText} for a subclass that configures the text
146 * view for editing.
147 *
148 * <p>
149 * To allow users to copy some or all of the TextView's value and paste it somewhere else, set the
150 * XML attribute {@link android.R.styleable#TextView_textIsSelectable
151 * android:textIsSelectable} to "true" or call
152 * {@link #setTextIsSelectable setTextIsSelectable(true)}. The {@code textIsSelectable} flag
153 * allows users to make selection gestures in the TextView, which in turn triggers the system's
154 * built-in copy/paste controls.
155 * <p>
156 * <b>XML attributes</b>
157 * <p>
158 * See {@link android.R.styleable#TextView TextView Attributes},
159 * {@link android.R.styleable#View View Attributes}
160 *
161 * @attr ref android.R.styleable#TextView_text
162 * @attr ref android.R.styleable#TextView_bufferType
163 * @attr ref android.R.styleable#TextView_hint
164 * @attr ref android.R.styleable#TextView_textColor
165 * @attr ref android.R.styleable#TextView_textColorHighlight
166 * @attr ref android.R.styleable#TextView_textColorHint
167 * @attr ref android.R.styleable#TextView_textAppearance
168 * @attr ref android.R.styleable#TextView_textColorLink
169 * @attr ref android.R.styleable#TextView_textSize
170 * @attr ref android.R.styleable#TextView_textScaleX
171 * @attr ref android.R.styleable#TextView_fontFamily
172 * @attr ref android.R.styleable#TextView_typeface
173 * @attr ref android.R.styleable#TextView_textStyle
174 * @attr ref android.R.styleable#TextView_cursorVisible
175 * @attr ref android.R.styleable#TextView_maxLines
176 * @attr ref android.R.styleable#TextView_maxHeight
177 * @attr ref android.R.styleable#TextView_lines
178 * @attr ref android.R.styleable#TextView_height
179 * @attr ref android.R.styleable#TextView_minLines
180 * @attr ref android.R.styleable#TextView_minHeight
181 * @attr ref android.R.styleable#TextView_maxEms
182 * @attr ref android.R.styleable#TextView_maxWidth
183 * @attr ref android.R.styleable#TextView_ems
184 * @attr ref android.R.styleable#TextView_width
185 * @attr ref android.R.styleable#TextView_minEms
186 * @attr ref android.R.styleable#TextView_minWidth
187 * @attr ref android.R.styleable#TextView_gravity
188 * @attr ref android.R.styleable#TextView_scrollHorizontally
189 * @attr ref android.R.styleable#TextView_password
190 * @attr ref android.R.styleable#TextView_singleLine
191 * @attr ref android.R.styleable#TextView_selectAllOnFocus
192 * @attr ref android.R.styleable#TextView_includeFontPadding
193 * @attr ref android.R.styleable#TextView_maxLength
194 * @attr ref android.R.styleable#TextView_shadowColor
195 * @attr ref android.R.styleable#TextView_shadowDx
196 * @attr ref android.R.styleable#TextView_shadowDy
197 * @attr ref android.R.styleable#TextView_shadowRadius
198 * @attr ref android.R.styleable#TextView_autoLink
199 * @attr ref android.R.styleable#TextView_linksClickable
200 * @attr ref android.R.styleable#TextView_numeric
201 * @attr ref android.R.styleable#TextView_digits
202 * @attr ref android.R.styleable#TextView_phoneNumber
203 * @attr ref android.R.styleable#TextView_inputMethod
204 * @attr ref android.R.styleable#TextView_capitalize
205 * @attr ref android.R.styleable#TextView_autoText
206 * @attr ref android.R.styleable#TextView_editable
207 * @attr ref android.R.styleable#TextView_freezesText
208 * @attr ref android.R.styleable#TextView_ellipsize
209 * @attr ref android.R.styleable#TextView_drawableTop
210 * @attr ref android.R.styleable#TextView_drawableBottom
211 * @attr ref android.R.styleable#TextView_drawableRight
212 * @attr ref android.R.styleable#TextView_drawableLeft
213 * @attr ref android.R.styleable#TextView_drawableStart
214 * @attr ref android.R.styleable#TextView_drawableEnd
215 * @attr ref android.R.styleable#TextView_drawablePadding
216 * @attr ref android.R.styleable#TextView_lineSpacingExtra
217 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
218 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
219 * @attr ref android.R.styleable#TextView_inputType
220 * @attr ref android.R.styleable#TextView_imeOptions
221 * @attr ref android.R.styleable#TextView_privateImeOptions
222 * @attr ref android.R.styleable#TextView_imeActionLabel
223 * @attr ref android.R.styleable#TextView_imeActionId
224 * @attr ref android.R.styleable#TextView_editorExtras
225 * @attr ref android.R.styleable#TextView_elegantTextHeight
226 * @attr ref android.R.styleable#TextView_letterSpacing
227 * @attr ref android.R.styleable#TextView_fontFeatureSettings
228 */
229@RemoteView
230public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
231    static final String LOG_TAG = "TextView";
232    static final boolean DEBUG_EXTRACT = false;
233
234    // Enum for the "typeface" XML parameter.
235    // TODO: How can we get this from the XML instead of hardcoding it here?
236    private static final int SANS = 1;
237    private static final int SERIF = 2;
238    private static final int MONOSPACE = 3;
239
240    // Bitfield for the "numeric" XML parameter.
241    // TODO: How can we get this from the XML instead of hardcoding it here?
242    private static final int SIGNED = 2;
243    private static final int DECIMAL = 4;
244
245    /**
246     * Draw marquee text with fading edges as usual
247     */
248    private static final int MARQUEE_FADE_NORMAL = 0;
249
250    /**
251     * Draw marquee text as ellipsize end while inactive instead of with the fade.
252     * (Useful for devices where the fade can be expensive if overdone)
253     */
254    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
255
256    /**
257     * Draw marquee text with fading edges because it is currently active/animating.
258     */
259    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
260
261    private static final int LINES = 1;
262    private static final int EMS = LINES;
263    private static final int PIXELS = 2;
264
265    private static final RectF TEMP_RECTF = new RectF();
266
267    // XXX should be much larger
268    private static final int VERY_WIDE = 1024*1024;
269    private static final int ANIMATED_SCROLL_GAP = 250;
270
271    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
272    private static final Spanned EMPTY_SPANNED = new SpannedString("");
273
274    private static final int CHANGE_WATCHER_PRIORITY = 100;
275
276    // New state used to change background based on whether this TextView is multiline.
277    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
278
279    // System wide time for last cut or copy action.
280    static long LAST_CUT_OR_COPY_TIME;
281
282    private ColorStateList mTextColor;
283    private ColorStateList mHintTextColor;
284    private ColorStateList mLinkTextColor;
285    @ViewDebug.ExportedProperty(category = "text")
286    private int mCurTextColor;
287    private int mCurHintTextColor;
288    private boolean mFreezesText;
289    private boolean mDispatchTemporaryDetach;
290
291    /** Whether this view is temporarily detached from the parent view. */
292    boolean mTemporaryDetach;
293
294    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
295    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
296
297    private float mShadowRadius, mShadowDx, mShadowDy;
298    private int mShadowColor;
299
300
301    private boolean mPreDrawRegistered;
302    private boolean mPreDrawListenerDetached;
303
304    // A flag to prevent repeated movements from escaping the enclosing text view. The idea here is
305    // that if a user is holding down a movement key to traverse text, we shouldn't also traverse
306    // the view hierarchy. On the other hand, if the user is using the movement key to traverse views
307    // (i.e. the first movement was to traverse out of this view, or this view was traversed into by
308    // the user holding the movement key down) then we shouldn't prevent the focus from changing.
309    private boolean mPreventDefaultMovement;
310
311    private TextUtils.TruncateAt mEllipsize;
312
313    static class Drawables {
314        final static int DRAWABLE_NONE = -1;
315        final static int DRAWABLE_RIGHT = 0;
316        final static int DRAWABLE_LEFT = 1;
317
318        final Rect mCompoundRect = new Rect();
319
320        Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight,
321                mDrawableStart, mDrawableEnd, mDrawableError, mDrawableTemp;
322
323        Drawable mDrawableLeftInitial, mDrawableRightInitial;
324        boolean mIsRtlCompatibilityMode;
325        boolean mOverride;
326
327        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
328                mDrawableSizeStart, mDrawableSizeEnd, mDrawableSizeError, mDrawableSizeTemp;
329
330        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
331                mDrawableHeightStart, mDrawableHeightEnd, mDrawableHeightError, mDrawableHeightTemp;
332
333        int mDrawablePadding;
334
335        int mDrawableSaved = DRAWABLE_NONE;
336
337        public Drawables(Context context) {
338            final int targetSdkVersion = context.getApplicationInfo().targetSdkVersion;
339            mIsRtlCompatibilityMode = (targetSdkVersion < JELLY_BEAN_MR1 ||
340                !context.getApplicationInfo().hasRtlSupport());
341            mOverride = false;
342        }
343
344        public void resolveWithLayoutDirection(int layoutDirection) {
345            // First reset "left" and "right" drawables to their initial values
346            mDrawableLeft = mDrawableLeftInitial;
347            mDrawableRight = mDrawableRightInitial;
348
349            if (mIsRtlCompatibilityMode) {
350                // Use "start" drawable as "left" drawable if the "left" drawable was not defined
351                if (mDrawableStart != null && mDrawableLeft == null) {
352                    mDrawableLeft = mDrawableStart;
353                    mDrawableSizeLeft = mDrawableSizeStart;
354                    mDrawableHeightLeft = mDrawableHeightStart;
355                }
356                // Use "end" drawable as "right" drawable if the "right" drawable was not defined
357                if (mDrawableEnd != null && mDrawableRight == null) {
358                    mDrawableRight = mDrawableEnd;
359                    mDrawableSizeRight = mDrawableSizeEnd;
360                    mDrawableHeightRight = mDrawableHeightEnd;
361                }
362            } else {
363                // JB-MR1+ normal case: "start" / "end" drawables are overriding "left" / "right"
364                // drawable if and only if they have been defined
365                switch(layoutDirection) {
366                    case LAYOUT_DIRECTION_RTL:
367                        if (mOverride) {
368                            mDrawableRight = mDrawableStart;
369                            mDrawableSizeRight = mDrawableSizeStart;
370                            mDrawableHeightRight = mDrawableHeightStart;
371
372                            mDrawableLeft = mDrawableEnd;
373                            mDrawableSizeLeft = mDrawableSizeEnd;
374                            mDrawableHeightLeft = mDrawableHeightEnd;
375                        }
376                        break;
377
378                    case LAYOUT_DIRECTION_LTR:
379                    default:
380                        if (mOverride) {
381                            mDrawableLeft = mDrawableStart;
382                            mDrawableSizeLeft = mDrawableSizeStart;
383                            mDrawableHeightLeft = mDrawableHeightStart;
384
385                            mDrawableRight = mDrawableEnd;
386                            mDrawableSizeRight = mDrawableSizeEnd;
387                            mDrawableHeightRight = mDrawableHeightEnd;
388                        }
389                        break;
390                }
391            }
392            applyErrorDrawableIfNeeded(layoutDirection);
393            updateDrawablesLayoutDirection(layoutDirection);
394        }
395
396        private void updateDrawablesLayoutDirection(int layoutDirection) {
397            if (mDrawableLeft != null) {
398                mDrawableLeft.setLayoutDirection(layoutDirection);
399            }
400            if (mDrawableRight != null) {
401                mDrawableRight.setLayoutDirection(layoutDirection);
402            }
403            if (mDrawableTop != null) {
404                mDrawableTop.setLayoutDirection(layoutDirection);
405            }
406            if (mDrawableBottom != null) {
407                mDrawableBottom.setLayoutDirection(layoutDirection);
408            }
409        }
410
411        public void setErrorDrawable(Drawable dr, TextView tv) {
412            if (mDrawableError != dr && mDrawableError != null) {
413                mDrawableError.setCallback(null);
414            }
415            mDrawableError = dr;
416
417            final Rect compoundRect = mCompoundRect;
418            int[] state = tv.getDrawableState();
419
420            if (mDrawableError != null) {
421                mDrawableError.setState(state);
422                mDrawableError.copyBounds(compoundRect);
423                mDrawableError.setCallback(tv);
424                mDrawableSizeError = compoundRect.width();
425                mDrawableHeightError = compoundRect.height();
426            } else {
427                mDrawableSizeError = mDrawableHeightError = 0;
428            }
429        }
430
431        private void applyErrorDrawableIfNeeded(int layoutDirection) {
432            // first restore the initial state if needed
433            switch (mDrawableSaved) {
434                case DRAWABLE_LEFT:
435                    mDrawableLeft = mDrawableTemp;
436                    mDrawableSizeLeft = mDrawableSizeTemp;
437                    mDrawableHeightLeft = mDrawableHeightTemp;
438                    break;
439                case DRAWABLE_RIGHT:
440                    mDrawableRight = mDrawableTemp;
441                    mDrawableSizeRight = mDrawableSizeTemp;
442                    mDrawableHeightRight = mDrawableHeightTemp;
443                    break;
444                case DRAWABLE_NONE:
445                default:
446            }
447            // then, if needed, assign the Error drawable to the correct location
448            if (mDrawableError != null) {
449                switch(layoutDirection) {
450                    case LAYOUT_DIRECTION_RTL:
451                        mDrawableSaved = DRAWABLE_LEFT;
452
453                        mDrawableTemp = mDrawableLeft;
454                        mDrawableSizeTemp = mDrawableSizeLeft;
455                        mDrawableHeightTemp = mDrawableHeightLeft;
456
457                        mDrawableLeft = mDrawableError;
458                        mDrawableSizeLeft = mDrawableSizeError;
459                        mDrawableHeightLeft = mDrawableHeightError;
460                        break;
461                    case LAYOUT_DIRECTION_LTR:
462                    default:
463                        mDrawableSaved = DRAWABLE_RIGHT;
464
465                        mDrawableTemp = mDrawableRight;
466                        mDrawableSizeTemp = mDrawableSizeRight;
467                        mDrawableHeightTemp = mDrawableHeightRight;
468
469                        mDrawableRight = mDrawableError;
470                        mDrawableSizeRight = mDrawableSizeError;
471                        mDrawableHeightRight = mDrawableHeightError;
472                        break;
473                }
474            }
475        }
476    }
477
478    Drawables mDrawables;
479
480    private CharWrapper mCharWrapper;
481
482    private Marquee mMarquee;
483    private boolean mRestartMarquee;
484
485    private int mMarqueeRepeatLimit = 3;
486
487    private int mLastLayoutDirection = -1;
488
489    /**
490     * On some devices the fading edges add a performance penalty if used
491     * extensively in the same layout. This mode indicates how the marquee
492     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
493     */
494    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
495
496    /**
497     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
498     * the layout that should be used when the mode switches.
499     */
500    private Layout mSavedMarqueeModeLayout;
501
502    @ViewDebug.ExportedProperty(category = "text")
503    private CharSequence mText;
504    private CharSequence mTransformed;
505    private BufferType mBufferType = BufferType.NORMAL;
506
507    private CharSequence mHint;
508    private Layout mHintLayout;
509
510    private MovementMethod mMovement;
511
512    private TransformationMethod mTransformation;
513    private boolean mAllowTransformationLengthChange;
514    private ChangeWatcher mChangeWatcher;
515
516    private ArrayList<TextWatcher> mListeners;
517
518    // display attributes
519    private final TextPaint mTextPaint;
520    private boolean mUserSetTextScaleX;
521    private Layout mLayout;
522
523    private int mGravity = Gravity.TOP | Gravity.START;
524    private boolean mHorizontallyScrolling;
525
526    private int mAutoLinkMask;
527    private boolean mLinksClickable = true;
528
529    private float mSpacingMult = 1.0f;
530    private float mSpacingAdd = 0.0f;
531
532    private int mMaximum = Integer.MAX_VALUE;
533    private int mMaxMode = LINES;
534    private int mMinimum = 0;
535    private int mMinMode = LINES;
536
537    private int mOldMaximum = mMaximum;
538    private int mOldMaxMode = mMaxMode;
539
540    private int mMaxWidth = Integer.MAX_VALUE;
541    private int mMaxWidthMode = PIXELS;
542    private int mMinWidth = 0;
543    private int mMinWidthMode = PIXELS;
544
545    private boolean mSingleLine;
546    private int mDesiredHeightAtMeasure = -1;
547    private boolean mIncludePad = true;
548    private int mDeferScroll = -1;
549
550    // tmp primitives, so we don't alloc them on each draw
551    private Rect mTempRect;
552    private long mLastScroll;
553    private Scroller mScroller;
554
555    private BoringLayout.Metrics mBoring, mHintBoring;
556    private BoringLayout mSavedLayout, mSavedHintLayout;
557
558    private TextDirectionHeuristic mTextDir;
559
560    private InputFilter[] mFilters = NO_FILTERS;
561
562    private volatile Locale mCurrentSpellCheckerLocaleCache;
563
564    // It is possible to have a selection even when mEditor is null (programmatically set, like when
565    // a link is pressed). These highlight-related fields do not go in mEditor.
566    int mHighlightColor = 0x6633B5E5;
567    private Path mHighlightPath;
568    private final Paint mHighlightPaint;
569    private boolean mHighlightPathBogus = true;
570
571    // Although these fields are specific to editable text, they are not added to Editor because
572    // they are defined by the TextView's style and are theme-dependent.
573    int mCursorDrawableRes;
574    // These four fields, could be moved to Editor, since we know their default values and we
575    // could condition the creation of the Editor to a non standard value. This is however
576    // brittle since the hardcoded values here (such as
577    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
578    // default style is modified.
579    int mTextSelectHandleLeftRes;
580    int mTextSelectHandleRightRes;
581    int mTextSelectHandleRes;
582    int mTextEditSuggestionItemLayout;
583
584    /**
585     * EditText specific data, created on demand when one of the Editor fields is used.
586     * See {@link #createEditorIfNeeded()}.
587     */
588    private Editor mEditor;
589
590    /*
591     * Kick-start the font cache for the zygote process (to pay the cost of
592     * initializing freetype for our default font only once).
593     */
594    static {
595        Paint p = new Paint();
596        p.setAntiAlias(true);
597        // We don't care about the result, just the side-effect of measuring.
598        p.measureText("H");
599    }
600
601    /**
602     * Interface definition for a callback to be invoked when an action is
603     * performed on the editor.
604     */
605    public interface OnEditorActionListener {
606        /**
607         * Called when an action is being performed.
608         *
609         * @param v The view that was clicked.
610         * @param actionId Identifier of the action.  This will be either the
611         * identifier you supplied, or {@link EditorInfo#IME_NULL
612         * EditorInfo.IME_NULL} if being called due to the enter key
613         * being pressed.
614         * @param event If triggered by an enter key, this is the event;
615         * otherwise, this is null.
616         * @return Return true if you have consumed the action, else false.
617         */
618        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
619    }
620
621    public TextView(Context context) {
622        this(context, null);
623    }
624
625    public TextView(Context context, AttributeSet attrs) {
626        this(context, attrs, com.android.internal.R.attr.textViewStyle);
627    }
628
629    public TextView(Context context, AttributeSet attrs, int defStyleAttr) {
630        this(context, attrs, defStyleAttr, 0);
631    }
632
633    @SuppressWarnings("deprecation")
634    public TextView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
635        super(context, attrs, defStyleAttr, defStyleRes);
636
637        mText = "";
638
639        final Resources res = getResources();
640        final CompatibilityInfo compat = res.getCompatibilityInfo();
641
642        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
643        mTextPaint.density = res.getDisplayMetrics().density;
644        mTextPaint.setCompatibilityScaling(compat.applicationScale);
645
646        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
647        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
648
649        mMovement = getDefaultMovementMethod();
650
651        mTransformation = null;
652
653        int textColorHighlight = 0;
654        ColorStateList textColor = null;
655        ColorStateList textColorHint = null;
656        ColorStateList textColorLink = null;
657        int textSize = 15;
658        String fontFamily = null;
659        int typefaceIndex = -1;
660        int styleIndex = -1;
661        boolean allCaps = false;
662        int shadowcolor = 0;
663        float dx = 0, dy = 0, r = 0;
664        boolean elegant = false;
665        float letterSpacing = 0;
666        String fontFeatureSettings = null;
667
668        final Resources.Theme theme = context.getTheme();
669
670        /*
671         * Look the appearance up without checking first if it exists because
672         * almost every TextView has one and it greatly simplifies the logic
673         * to be able to parse the appearance first and then let specific tags
674         * for this View override it.
675         */
676        TypedArray a = theme.obtainStyledAttributes(attrs,
677                com.android.internal.R.styleable.TextViewAppearance, defStyleAttr, defStyleRes);
678        TypedArray appearance = null;
679        int ap = a.getResourceId(
680                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
681        a.recycle();
682        if (ap != -1) {
683            appearance = theme.obtainStyledAttributes(
684                    ap, com.android.internal.R.styleable.TextAppearance);
685        }
686        if (appearance != null) {
687            int n = appearance.getIndexCount();
688            for (int i = 0; i < n; i++) {
689                int attr = appearance.getIndex(i);
690
691                switch (attr) {
692                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
693                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
694                    break;
695
696                case com.android.internal.R.styleable.TextAppearance_textColor:
697                    textColor = appearance.getColorStateList(attr);
698                    break;
699
700                case com.android.internal.R.styleable.TextAppearance_textColorHint:
701                    textColorHint = appearance.getColorStateList(attr);
702                    break;
703
704                case com.android.internal.R.styleable.TextAppearance_textColorLink:
705                    textColorLink = appearance.getColorStateList(attr);
706                    break;
707
708                case com.android.internal.R.styleable.TextAppearance_textSize:
709                    textSize = appearance.getDimensionPixelSize(attr, textSize);
710                    break;
711
712                case com.android.internal.R.styleable.TextAppearance_typeface:
713                    typefaceIndex = appearance.getInt(attr, -1);
714                    break;
715
716                case com.android.internal.R.styleable.TextAppearance_fontFamily:
717                    fontFamily = appearance.getString(attr);
718                    break;
719
720                case com.android.internal.R.styleable.TextAppearance_textStyle:
721                    styleIndex = appearance.getInt(attr, -1);
722                    break;
723
724                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
725                    allCaps = appearance.getBoolean(attr, false);
726                    break;
727
728                case com.android.internal.R.styleable.TextAppearance_shadowColor:
729                    shadowcolor = appearance.getInt(attr, 0);
730                    break;
731
732                case com.android.internal.R.styleable.TextAppearance_shadowDx:
733                    dx = appearance.getFloat(attr, 0);
734                    break;
735
736                case com.android.internal.R.styleable.TextAppearance_shadowDy:
737                    dy = appearance.getFloat(attr, 0);
738                    break;
739
740                case com.android.internal.R.styleable.TextAppearance_shadowRadius:
741                    r = appearance.getFloat(attr, 0);
742                    break;
743
744                case com.android.internal.R.styleable.TextAppearance_elegantTextHeight:
745                    elegant = appearance.getBoolean(attr, false);
746                    break;
747
748                case com.android.internal.R.styleable.TextAppearance_letterSpacing:
749                    letterSpacing = appearance.getFloat(attr, 0);
750                    break;
751
752                case com.android.internal.R.styleable.TextAppearance_fontFeatureSettings:
753                    fontFeatureSettings = appearance.getString(attr);
754                    break;
755                }
756            }
757
758            appearance.recycle();
759        }
760
761        boolean editable = getDefaultEditable();
762        CharSequence inputMethod = null;
763        int numeric = 0;
764        CharSequence digits = null;
765        boolean phone = false;
766        boolean autotext = false;
767        int autocap = -1;
768        int buffertype = 0;
769        boolean selectallonfocus = false;
770        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
771            drawableBottom = null, drawableStart = null, drawableEnd = null;
772        int drawablePadding = 0;
773        int ellipsize = -1;
774        boolean singleLine = false;
775        int maxlength = -1;
776        CharSequence text = "";
777        CharSequence hint = null;
778        boolean password = false;
779        int inputType = EditorInfo.TYPE_NULL;
780
781        a = theme.obtainStyledAttributes(
782                    attrs, com.android.internal.R.styleable.TextView, defStyleAttr, defStyleRes);
783
784        int n = a.getIndexCount();
785        for (int i = 0; i < n; i++) {
786            int attr = a.getIndex(i);
787
788            switch (attr) {
789            case com.android.internal.R.styleable.TextView_editable:
790                editable = a.getBoolean(attr, editable);
791                break;
792
793            case com.android.internal.R.styleable.TextView_inputMethod:
794                inputMethod = a.getText(attr);
795                break;
796
797            case com.android.internal.R.styleable.TextView_numeric:
798                numeric = a.getInt(attr, numeric);
799                break;
800
801            case com.android.internal.R.styleable.TextView_digits:
802                digits = a.getText(attr);
803                break;
804
805            case com.android.internal.R.styleable.TextView_phoneNumber:
806                phone = a.getBoolean(attr, phone);
807                break;
808
809            case com.android.internal.R.styleable.TextView_autoText:
810                autotext = a.getBoolean(attr, autotext);
811                break;
812
813            case com.android.internal.R.styleable.TextView_capitalize:
814                autocap = a.getInt(attr, autocap);
815                break;
816
817            case com.android.internal.R.styleable.TextView_bufferType:
818                buffertype = a.getInt(attr, buffertype);
819                break;
820
821            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
822                selectallonfocus = a.getBoolean(attr, selectallonfocus);
823                break;
824
825            case com.android.internal.R.styleable.TextView_autoLink:
826                mAutoLinkMask = a.getInt(attr, 0);
827                break;
828
829            case com.android.internal.R.styleable.TextView_linksClickable:
830                mLinksClickable = a.getBoolean(attr, true);
831                break;
832
833            case com.android.internal.R.styleable.TextView_drawableLeft:
834                drawableLeft = a.getDrawable(attr);
835                break;
836
837            case com.android.internal.R.styleable.TextView_drawableTop:
838                drawableTop = a.getDrawable(attr);
839                break;
840
841            case com.android.internal.R.styleable.TextView_drawableRight:
842                drawableRight = a.getDrawable(attr);
843                break;
844
845            case com.android.internal.R.styleable.TextView_drawableBottom:
846                drawableBottom = a.getDrawable(attr);
847                break;
848
849            case com.android.internal.R.styleable.TextView_drawableStart:
850                drawableStart = a.getDrawable(attr);
851                break;
852
853            case com.android.internal.R.styleable.TextView_drawableEnd:
854                drawableEnd = a.getDrawable(attr);
855                break;
856
857            case com.android.internal.R.styleable.TextView_drawablePadding:
858                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
859                break;
860
861            case com.android.internal.R.styleable.TextView_maxLines:
862                setMaxLines(a.getInt(attr, -1));
863                break;
864
865            case com.android.internal.R.styleable.TextView_maxHeight:
866                setMaxHeight(a.getDimensionPixelSize(attr, -1));
867                break;
868
869            case com.android.internal.R.styleable.TextView_lines:
870                setLines(a.getInt(attr, -1));
871                break;
872
873            case com.android.internal.R.styleable.TextView_height:
874                setHeight(a.getDimensionPixelSize(attr, -1));
875                break;
876
877            case com.android.internal.R.styleable.TextView_minLines:
878                setMinLines(a.getInt(attr, -1));
879                break;
880
881            case com.android.internal.R.styleable.TextView_minHeight:
882                setMinHeight(a.getDimensionPixelSize(attr, -1));
883                break;
884
885            case com.android.internal.R.styleable.TextView_maxEms:
886                setMaxEms(a.getInt(attr, -1));
887                break;
888
889            case com.android.internal.R.styleable.TextView_maxWidth:
890                setMaxWidth(a.getDimensionPixelSize(attr, -1));
891                break;
892
893            case com.android.internal.R.styleable.TextView_ems:
894                setEms(a.getInt(attr, -1));
895                break;
896
897            case com.android.internal.R.styleable.TextView_width:
898                setWidth(a.getDimensionPixelSize(attr, -1));
899                break;
900
901            case com.android.internal.R.styleable.TextView_minEms:
902                setMinEms(a.getInt(attr, -1));
903                break;
904
905            case com.android.internal.R.styleable.TextView_minWidth:
906                setMinWidth(a.getDimensionPixelSize(attr, -1));
907                break;
908
909            case com.android.internal.R.styleable.TextView_gravity:
910                setGravity(a.getInt(attr, -1));
911                break;
912
913            case com.android.internal.R.styleable.TextView_hint:
914                hint = a.getText(attr);
915                break;
916
917            case com.android.internal.R.styleable.TextView_text:
918                text = a.getText(attr);
919                break;
920
921            case com.android.internal.R.styleable.TextView_scrollHorizontally:
922                if (a.getBoolean(attr, false)) {
923                    setHorizontallyScrolling(true);
924                }
925                break;
926
927            case com.android.internal.R.styleable.TextView_singleLine:
928                singleLine = a.getBoolean(attr, singleLine);
929                break;
930
931            case com.android.internal.R.styleable.TextView_ellipsize:
932                ellipsize = a.getInt(attr, ellipsize);
933                break;
934
935            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
936                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
937                break;
938
939            case com.android.internal.R.styleable.TextView_includeFontPadding:
940                if (!a.getBoolean(attr, true)) {
941                    setIncludeFontPadding(false);
942                }
943                break;
944
945            case com.android.internal.R.styleable.TextView_cursorVisible:
946                if (!a.getBoolean(attr, true)) {
947                    setCursorVisible(false);
948                }
949                break;
950
951            case com.android.internal.R.styleable.TextView_maxLength:
952                maxlength = a.getInt(attr, -1);
953                break;
954
955            case com.android.internal.R.styleable.TextView_textScaleX:
956                setTextScaleX(a.getFloat(attr, 1.0f));
957                break;
958
959            case com.android.internal.R.styleable.TextView_freezesText:
960                mFreezesText = a.getBoolean(attr, false);
961                break;
962
963            case com.android.internal.R.styleable.TextView_shadowColor:
964                shadowcolor = a.getInt(attr, 0);
965                break;
966
967            case com.android.internal.R.styleable.TextView_shadowDx:
968                dx = a.getFloat(attr, 0);
969                break;
970
971            case com.android.internal.R.styleable.TextView_shadowDy:
972                dy = a.getFloat(attr, 0);
973                break;
974
975            case com.android.internal.R.styleable.TextView_shadowRadius:
976                r = a.getFloat(attr, 0);
977                break;
978
979            case com.android.internal.R.styleable.TextView_enabled:
980                setEnabled(a.getBoolean(attr, isEnabled()));
981                break;
982
983            case com.android.internal.R.styleable.TextView_textColorHighlight:
984                textColorHighlight = a.getColor(attr, textColorHighlight);
985                break;
986
987            case com.android.internal.R.styleable.TextView_textColor:
988                textColor = a.getColorStateList(attr);
989                break;
990
991            case com.android.internal.R.styleable.TextView_textColorHint:
992                textColorHint = a.getColorStateList(attr);
993                break;
994
995            case com.android.internal.R.styleable.TextView_textColorLink:
996                textColorLink = a.getColorStateList(attr);
997                break;
998
999            case com.android.internal.R.styleable.TextView_textSize:
1000                textSize = a.getDimensionPixelSize(attr, textSize);
1001                break;
1002
1003            case com.android.internal.R.styleable.TextView_typeface:
1004                typefaceIndex = a.getInt(attr, typefaceIndex);
1005                break;
1006
1007            case com.android.internal.R.styleable.TextView_textStyle:
1008                styleIndex = a.getInt(attr, styleIndex);
1009                break;
1010
1011            case com.android.internal.R.styleable.TextView_fontFamily:
1012                fontFamily = a.getString(attr);
1013                break;
1014
1015            case com.android.internal.R.styleable.TextView_password:
1016                password = a.getBoolean(attr, password);
1017                break;
1018
1019            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
1020                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
1021                break;
1022
1023            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
1024                mSpacingMult = a.getFloat(attr, mSpacingMult);
1025                break;
1026
1027            case com.android.internal.R.styleable.TextView_inputType:
1028                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
1029                break;
1030
1031            case com.android.internal.R.styleable.TextView_imeOptions:
1032                createEditorIfNeeded();
1033                mEditor.createInputContentTypeIfNeeded();
1034                mEditor.mInputContentType.imeOptions = a.getInt(attr,
1035                        mEditor.mInputContentType.imeOptions);
1036                break;
1037
1038            case com.android.internal.R.styleable.TextView_imeActionLabel:
1039                createEditorIfNeeded();
1040                mEditor.createInputContentTypeIfNeeded();
1041                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
1042                break;
1043
1044            case com.android.internal.R.styleable.TextView_imeActionId:
1045                createEditorIfNeeded();
1046                mEditor.createInputContentTypeIfNeeded();
1047                mEditor.mInputContentType.imeActionId = a.getInt(attr,
1048                        mEditor.mInputContentType.imeActionId);
1049                break;
1050
1051            case com.android.internal.R.styleable.TextView_privateImeOptions:
1052                setPrivateImeOptions(a.getString(attr));
1053                break;
1054
1055            case com.android.internal.R.styleable.TextView_editorExtras:
1056                try {
1057                    setInputExtras(a.getResourceId(attr, 0));
1058                } catch (XmlPullParserException e) {
1059                    Log.w(LOG_TAG, "Failure reading input extras", e);
1060                } catch (IOException e) {
1061                    Log.w(LOG_TAG, "Failure reading input extras", e);
1062                }
1063                break;
1064
1065            case com.android.internal.R.styleable.TextView_textCursorDrawable:
1066                mCursorDrawableRes = a.getResourceId(attr, 0);
1067                break;
1068
1069            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
1070                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
1071                break;
1072
1073            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
1074                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
1075                break;
1076
1077            case com.android.internal.R.styleable.TextView_textSelectHandle:
1078                mTextSelectHandleRes = a.getResourceId(attr, 0);
1079                break;
1080
1081            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
1082                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
1083                break;
1084
1085            case com.android.internal.R.styleable.TextView_textIsSelectable:
1086                setTextIsSelectable(a.getBoolean(attr, false));
1087                break;
1088
1089            case com.android.internal.R.styleable.TextView_textAllCaps:
1090                allCaps = a.getBoolean(attr, false);
1091                break;
1092
1093            case com.android.internal.R.styleable.TextView_elegantTextHeight:
1094                elegant = a.getBoolean(attr, false);
1095                break;
1096
1097            case com.android.internal.R.styleable.TextView_letterSpacing:
1098                letterSpacing = a.getFloat(attr, 0);
1099                break;
1100
1101            case com.android.internal.R.styleable.TextView_fontFeatureSettings:
1102                fontFeatureSettings = a.getString(attr);
1103                break;
1104            }
1105        }
1106        a.recycle();
1107
1108        BufferType bufferType = BufferType.EDITABLE;
1109
1110        final int variation =
1111                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
1112        final boolean passwordInputType = variation
1113                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
1114        final boolean webPasswordInputType = variation
1115                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
1116        final boolean numberPasswordInputType = variation
1117                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
1118
1119        if (inputMethod != null) {
1120            Class<?> c;
1121
1122            try {
1123                c = Class.forName(inputMethod.toString());
1124            } catch (ClassNotFoundException ex) {
1125                throw new RuntimeException(ex);
1126            }
1127
1128            try {
1129                createEditorIfNeeded();
1130                mEditor.mKeyListener = (KeyListener) c.newInstance();
1131            } catch (InstantiationException ex) {
1132                throw new RuntimeException(ex);
1133            } catch (IllegalAccessException ex) {
1134                throw new RuntimeException(ex);
1135            }
1136            try {
1137                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1138                        ? inputType
1139                        : mEditor.mKeyListener.getInputType();
1140            } catch (IncompatibleClassChangeError e) {
1141                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1142            }
1143        } else if (digits != null) {
1144            createEditorIfNeeded();
1145            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
1146            // If no input type was specified, we will default to generic
1147            // text, since we can't tell the IME about the set of digits
1148            // that was selected.
1149            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1150                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
1151        } else if (inputType != EditorInfo.TYPE_NULL) {
1152            setInputType(inputType, true);
1153            // If set, the input type overrides what was set using the deprecated singleLine flag.
1154            singleLine = !isMultilineInputType(inputType);
1155        } else if (phone) {
1156            createEditorIfNeeded();
1157            mEditor.mKeyListener = DialerKeyListener.getInstance();
1158            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
1159        } else if (numeric != 0) {
1160            createEditorIfNeeded();
1161            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
1162                                                   (numeric & DECIMAL) != 0);
1163            inputType = EditorInfo.TYPE_CLASS_NUMBER;
1164            if ((numeric & SIGNED) != 0) {
1165                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
1166            }
1167            if ((numeric & DECIMAL) != 0) {
1168                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
1169            }
1170            mEditor.mInputType = inputType;
1171        } else if (autotext || autocap != -1) {
1172            TextKeyListener.Capitalize cap;
1173
1174            inputType = EditorInfo.TYPE_CLASS_TEXT;
1175
1176            switch (autocap) {
1177            case 1:
1178                cap = TextKeyListener.Capitalize.SENTENCES;
1179                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
1180                break;
1181
1182            case 2:
1183                cap = TextKeyListener.Capitalize.WORDS;
1184                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
1185                break;
1186
1187            case 3:
1188                cap = TextKeyListener.Capitalize.CHARACTERS;
1189                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
1190                break;
1191
1192            default:
1193                cap = TextKeyListener.Capitalize.NONE;
1194                break;
1195            }
1196
1197            createEditorIfNeeded();
1198            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
1199            mEditor.mInputType = inputType;
1200        } else if (isTextSelectable()) {
1201            // Prevent text changes from keyboard.
1202            if (mEditor != null) {
1203                mEditor.mKeyListener = null;
1204                mEditor.mInputType = EditorInfo.TYPE_NULL;
1205            }
1206            bufferType = BufferType.SPANNABLE;
1207            // So that selection can be changed using arrow keys and touch is handled.
1208            setMovementMethod(ArrowKeyMovementMethod.getInstance());
1209        } else if (editable) {
1210            createEditorIfNeeded();
1211            mEditor.mKeyListener = TextKeyListener.getInstance();
1212            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1213        } else {
1214            if (mEditor != null) mEditor.mKeyListener = null;
1215
1216            switch (buffertype) {
1217                case 0:
1218                    bufferType = BufferType.NORMAL;
1219                    break;
1220                case 1:
1221                    bufferType = BufferType.SPANNABLE;
1222                    break;
1223                case 2:
1224                    bufferType = BufferType.EDITABLE;
1225                    break;
1226            }
1227        }
1228
1229        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
1230                webPasswordInputType, numberPasswordInputType);
1231
1232        if (selectallonfocus) {
1233            createEditorIfNeeded();
1234            mEditor.mSelectAllOnFocus = true;
1235
1236            if (bufferType == BufferType.NORMAL)
1237                bufferType = BufferType.SPANNABLE;
1238        }
1239
1240        // This call will save the initial left/right drawables
1241        setCompoundDrawablesWithIntrinsicBounds(
1242            drawableLeft, drawableTop, drawableRight, drawableBottom);
1243        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1244        setCompoundDrawablePadding(drawablePadding);
1245
1246        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1247        // of lines of height are unchanged for multi-line TextViews.
1248        setInputTypeSingleLine(singleLine);
1249        applySingleLine(singleLine, singleLine, singleLine);
1250
1251        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1252                ellipsize = 3; // END
1253        }
1254
1255        switch (ellipsize) {
1256            case 1:
1257                setEllipsize(TextUtils.TruncateAt.START);
1258                break;
1259            case 2:
1260                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1261                break;
1262            case 3:
1263                setEllipsize(TextUtils.TruncateAt.END);
1264                break;
1265            case 4:
1266                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1267                    setHorizontalFadingEdgeEnabled(true);
1268                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1269                } else {
1270                    setHorizontalFadingEdgeEnabled(false);
1271                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1272                }
1273                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1274                break;
1275        }
1276
1277        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1278        setHintTextColor(textColorHint);
1279        setLinkTextColor(textColorLink);
1280        if (textColorHighlight != 0) {
1281            setHighlightColor(textColorHighlight);
1282        }
1283        setRawTextSize(textSize);
1284        setElegantTextHeight(elegant);
1285        setLetterSpacing(letterSpacing);
1286        setFontFeatureSettings(fontFeatureSettings);
1287
1288        if (allCaps) {
1289            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1290        }
1291
1292        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1293            setTransformationMethod(PasswordTransformationMethod.getInstance());
1294            typefaceIndex = MONOSPACE;
1295        } else if (mEditor != null &&
1296                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1297                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1298            typefaceIndex = MONOSPACE;
1299        }
1300
1301        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1302
1303        if (shadowcolor != 0) {
1304            setShadowLayer(r, dx, dy, shadowcolor);
1305        }
1306
1307        if (maxlength >= 0) {
1308            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1309        } else {
1310            setFilters(NO_FILTERS);
1311        }
1312
1313        setText(text, bufferType);
1314        if (hint != null) setHint(hint);
1315
1316        /*
1317         * Views are not normally focusable unless specified to be.
1318         * However, TextViews that have input or movement methods *are*
1319         * focusable by default.
1320         */
1321        a = context.obtainStyledAttributes(
1322                attrs, com.android.internal.R.styleable.View, defStyleAttr, defStyleRes);
1323
1324        boolean focusable = mMovement != null || getKeyListener() != null;
1325        boolean clickable = focusable || isClickable();
1326        boolean longClickable = focusable || isLongClickable();
1327
1328        n = a.getIndexCount();
1329        for (int i = 0; i < n; i++) {
1330            int attr = a.getIndex(i);
1331
1332            switch (attr) {
1333            case com.android.internal.R.styleable.View_focusable:
1334                focusable = a.getBoolean(attr, focusable);
1335                break;
1336
1337            case com.android.internal.R.styleable.View_clickable:
1338                clickable = a.getBoolean(attr, clickable);
1339                break;
1340
1341            case com.android.internal.R.styleable.View_longClickable:
1342                longClickable = a.getBoolean(attr, longClickable);
1343                break;
1344            }
1345        }
1346        a.recycle();
1347
1348        setFocusable(focusable);
1349        setClickable(clickable);
1350        setLongClickable(longClickable);
1351
1352        if (mEditor != null) mEditor.prepareCursorControllers();
1353
1354        // If not explicitly specified this view is important for accessibility.
1355        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1356            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1357        }
1358    }
1359
1360    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1361        Typeface tf = null;
1362        if (familyName != null) {
1363            tf = Typeface.create(familyName, styleIndex);
1364            if (tf != null) {
1365                setTypeface(tf);
1366                return;
1367            }
1368        }
1369        switch (typefaceIndex) {
1370            case SANS:
1371                tf = Typeface.SANS_SERIF;
1372                break;
1373
1374            case SERIF:
1375                tf = Typeface.SERIF;
1376                break;
1377
1378            case MONOSPACE:
1379                tf = Typeface.MONOSPACE;
1380                break;
1381        }
1382
1383        setTypeface(tf, styleIndex);
1384    }
1385
1386    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1387        boolean hasRelativeDrawables = (start != null) || (end != null);
1388        if (hasRelativeDrawables) {
1389            Drawables dr = mDrawables;
1390            if (dr == null) {
1391                mDrawables = dr = new Drawables(getContext());
1392            }
1393            mDrawables.mOverride = true;
1394            final Rect compoundRect = dr.mCompoundRect;
1395            int[] state = getDrawableState();
1396            if (start != null) {
1397                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1398                start.setState(state);
1399                start.copyBounds(compoundRect);
1400                start.setCallback(this);
1401
1402                dr.mDrawableStart = start;
1403                dr.mDrawableSizeStart = compoundRect.width();
1404                dr.mDrawableHeightStart = compoundRect.height();
1405            } else {
1406                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1407            }
1408            if (end != null) {
1409                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1410                end.setState(state);
1411                end.copyBounds(compoundRect);
1412                end.setCallback(this);
1413
1414                dr.mDrawableEnd = end;
1415                dr.mDrawableSizeEnd = compoundRect.width();
1416                dr.mDrawableHeightEnd = compoundRect.height();
1417            } else {
1418                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1419            }
1420            resetResolvedDrawables();
1421            resolveDrawables();
1422        }
1423    }
1424
1425    @Override
1426    public void setEnabled(boolean enabled) {
1427        if (enabled == isEnabled()) {
1428            return;
1429        }
1430
1431        if (!enabled) {
1432            // Hide the soft input if the currently active TextView is disabled
1433            InputMethodManager imm = InputMethodManager.peekInstance();
1434            if (imm != null && imm.isActive(this)) {
1435                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1436            }
1437        }
1438
1439        super.setEnabled(enabled);
1440
1441        if (enabled) {
1442            // Make sure IME is updated with current editor info.
1443            InputMethodManager imm = InputMethodManager.peekInstance();
1444            if (imm != null) imm.restartInput(this);
1445        }
1446
1447        // Will change text color
1448        if (mEditor != null) {
1449            mEditor.invalidateTextDisplayList();
1450            mEditor.prepareCursorControllers();
1451
1452            // start or stop the cursor blinking as appropriate
1453            mEditor.makeBlink();
1454        }
1455    }
1456
1457    /**
1458     * Sets the typeface and style in which the text should be displayed,
1459     * and turns on the fake bold and italic bits in the Paint if the
1460     * Typeface that you provided does not have all the bits in the
1461     * style that you specified.
1462     *
1463     * @attr ref android.R.styleable#TextView_typeface
1464     * @attr ref android.R.styleable#TextView_textStyle
1465     */
1466    public void setTypeface(Typeface tf, int style) {
1467        if (style > 0) {
1468            if (tf == null) {
1469                tf = Typeface.defaultFromStyle(style);
1470            } else {
1471                tf = Typeface.create(tf, style);
1472            }
1473
1474            setTypeface(tf);
1475            // now compute what (if any) algorithmic styling is needed
1476            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1477            int need = style & ~typefaceStyle;
1478            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1479            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1480        } else {
1481            mTextPaint.setFakeBoldText(false);
1482            mTextPaint.setTextSkewX(0);
1483            setTypeface(tf);
1484        }
1485    }
1486
1487    /**
1488     * Subclasses override this to specify that they have a KeyListener
1489     * by default even if not specifically called for in the XML options.
1490     */
1491    protected boolean getDefaultEditable() {
1492        return false;
1493    }
1494
1495    /**
1496     * Subclasses override this to specify a default movement method.
1497     */
1498    protected MovementMethod getDefaultMovementMethod() {
1499        return null;
1500    }
1501
1502    /**
1503     * Return the text the TextView is displaying. If setText() was called with
1504     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1505     * the return value from this method to Spannable or Editable, respectively.
1506     *
1507     * Note: The content of the return value should not be modified. If you want
1508     * a modifiable one, you should make your own copy first.
1509     *
1510     * @attr ref android.R.styleable#TextView_text
1511     */
1512    @ViewDebug.CapturedViewProperty
1513    public CharSequence getText() {
1514        return mText;
1515    }
1516
1517    /**
1518     * Returns the length, in characters, of the text managed by this TextView
1519     */
1520    public int length() {
1521        return mText.length();
1522    }
1523
1524    /**
1525     * Return the text the TextView is displaying as an Editable object.  If
1526     * the text is not editable, null is returned.
1527     *
1528     * @see #getText
1529     */
1530    public Editable getEditableText() {
1531        return (mText instanceof Editable) ? (Editable)mText : null;
1532    }
1533
1534    /**
1535     * @return the height of one standard line in pixels.  Note that markup
1536     * within the text can cause individual lines to be taller or shorter
1537     * than this height, and the layout may contain additional first-
1538     * or last-line padding.
1539     */
1540    public int getLineHeight() {
1541        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1542    }
1543
1544    /**
1545     * @return the Layout that is currently being used to display the text.
1546     * This can be null if the text or width has recently changes.
1547     */
1548    public final Layout getLayout() {
1549        return mLayout;
1550    }
1551
1552    /**
1553     * @return the Layout that is currently being used to display the hint text.
1554     * This can be null.
1555     */
1556    final Layout getHintLayout() {
1557        return mHintLayout;
1558    }
1559
1560    /**
1561     * Retrieve the {@link android.content.UndoManager} that is currently associated
1562     * with this TextView.  By default there is no associated UndoManager, so null
1563     * is returned.  One can be associated with the TextView through
1564     * {@link #setUndoManager(android.content.UndoManager, String)}
1565     *
1566     * @hide
1567     */
1568    public final UndoManager getUndoManager() {
1569        return mEditor == null ? null : mEditor.mUndoManager;
1570    }
1571
1572    /**
1573     * Associate an {@link android.content.UndoManager} with this TextView.  Once
1574     * done, all edit operations on the TextView will result in appropriate
1575     * {@link android.content.UndoOperation} objects pushed on the given UndoManager's
1576     * stack.
1577     *
1578     * @param undoManager The {@link android.content.UndoManager} to associate with
1579     * this TextView, or null to clear any existing association.
1580     * @param tag String tag identifying this particular TextView owner in the
1581     * UndoManager.  This is used to keep the correct association with the
1582     * {@link android.content.UndoOwner} of any operations inside of the UndoManager.
1583     *
1584     * @hide
1585     */
1586    public final void setUndoManager(UndoManager undoManager, String tag) {
1587        if (undoManager != null) {
1588            createEditorIfNeeded();
1589            mEditor.mUndoManager = undoManager;
1590            mEditor.mUndoOwner = undoManager.getOwner(tag, this);
1591            mEditor.mUndoInputFilter = new Editor.UndoInputFilter(mEditor);
1592            if (!(mText instanceof Editable)) {
1593                setText(mText, BufferType.EDITABLE);
1594            }
1595
1596            setFilters((Editable) mText, mFilters);
1597        } else if (mEditor != null) {
1598            // XXX need to destroy all associated state.
1599            mEditor.mUndoManager = null;
1600            mEditor.mUndoOwner = null;
1601            mEditor.mUndoInputFilter = null;
1602        }
1603    }
1604
1605    /**
1606     * @return the current key listener for this TextView.
1607     * This will frequently be null for non-EditText TextViews.
1608     *
1609     * @attr ref android.R.styleable#TextView_numeric
1610     * @attr ref android.R.styleable#TextView_digits
1611     * @attr ref android.R.styleable#TextView_phoneNumber
1612     * @attr ref android.R.styleable#TextView_inputMethod
1613     * @attr ref android.R.styleable#TextView_capitalize
1614     * @attr ref android.R.styleable#TextView_autoText
1615     */
1616    public final KeyListener getKeyListener() {
1617        return mEditor == null ? null : mEditor.mKeyListener;
1618    }
1619
1620    /**
1621     * Sets the key listener to be used with this TextView.  This can be null
1622     * to disallow user input.  Note that this method has significant and
1623     * subtle interactions with soft keyboards and other input method:
1624     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1625     * for important details.  Calling this method will replace the current
1626     * content type of the text view with the content type returned by the
1627     * key listener.
1628     * <p>
1629     * Be warned that if you want a TextView with a key listener or movement
1630     * method not to be focusable, or if you want a TextView without a
1631     * key listener or movement method to be focusable, you must call
1632     * {@link #setFocusable} again after calling this to get the focusability
1633     * back the way you want it.
1634     *
1635     * @attr ref android.R.styleable#TextView_numeric
1636     * @attr ref android.R.styleable#TextView_digits
1637     * @attr ref android.R.styleable#TextView_phoneNumber
1638     * @attr ref android.R.styleable#TextView_inputMethod
1639     * @attr ref android.R.styleable#TextView_capitalize
1640     * @attr ref android.R.styleable#TextView_autoText
1641     */
1642    public void setKeyListener(KeyListener input) {
1643        setKeyListenerOnly(input);
1644        fixFocusableAndClickableSettings();
1645
1646        if (input != null) {
1647            createEditorIfNeeded();
1648            try {
1649                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1650            } catch (IncompatibleClassChangeError e) {
1651                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1652            }
1653            // Change inputType, without affecting transformation.
1654            // No need to applySingleLine since mSingleLine is unchanged.
1655            setInputTypeSingleLine(mSingleLine);
1656        } else {
1657            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1658        }
1659
1660        InputMethodManager imm = InputMethodManager.peekInstance();
1661        if (imm != null) imm.restartInput(this);
1662    }
1663
1664    private void setKeyListenerOnly(KeyListener input) {
1665        if (mEditor == null && input == null) return; // null is the default value
1666
1667        createEditorIfNeeded();
1668        if (mEditor.mKeyListener != input) {
1669            mEditor.mKeyListener = input;
1670            if (input != null && !(mText instanceof Editable)) {
1671                setText(mText);
1672            }
1673
1674            setFilters((Editable) mText, mFilters);
1675        }
1676    }
1677
1678    /**
1679     * @return the movement method being used for this TextView.
1680     * This will frequently be null for non-EditText TextViews.
1681     */
1682    public final MovementMethod getMovementMethod() {
1683        return mMovement;
1684    }
1685
1686    /**
1687     * Sets the movement method (arrow key handler) to be used for
1688     * this TextView.  This can be null to disallow using the arrow keys
1689     * to move the cursor or scroll the view.
1690     * <p>
1691     * Be warned that if you want a TextView with a key listener or movement
1692     * method not to be focusable, or if you want a TextView without a
1693     * key listener or movement method to be focusable, you must call
1694     * {@link #setFocusable} again after calling this to get the focusability
1695     * back the way you want it.
1696     */
1697    public final void setMovementMethod(MovementMethod movement) {
1698        if (mMovement != movement) {
1699            mMovement = movement;
1700
1701            if (movement != null && !(mText instanceof Spannable)) {
1702                setText(mText);
1703            }
1704
1705            fixFocusableAndClickableSettings();
1706
1707            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1708            // mMovement
1709            if (mEditor != null) mEditor.prepareCursorControllers();
1710        }
1711    }
1712
1713    private void fixFocusableAndClickableSettings() {
1714        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1715            setFocusable(true);
1716            setClickable(true);
1717            setLongClickable(true);
1718        } else {
1719            setFocusable(false);
1720            setClickable(false);
1721            setLongClickable(false);
1722        }
1723    }
1724
1725    /**
1726     * @return the current transformation method for this TextView.
1727     * This will frequently be null except for single-line and password
1728     * fields.
1729     *
1730     * @attr ref android.R.styleable#TextView_password
1731     * @attr ref android.R.styleable#TextView_singleLine
1732     */
1733    public final TransformationMethod getTransformationMethod() {
1734        return mTransformation;
1735    }
1736
1737    /**
1738     * Sets the transformation that is applied to the text that this
1739     * TextView is displaying.
1740     *
1741     * @attr ref android.R.styleable#TextView_password
1742     * @attr ref android.R.styleable#TextView_singleLine
1743     */
1744    public final void setTransformationMethod(TransformationMethod method) {
1745        if (method == mTransformation) {
1746            // Avoid the setText() below if the transformation is
1747            // the same.
1748            return;
1749        }
1750        if (mTransformation != null) {
1751            if (mText instanceof Spannable) {
1752                ((Spannable) mText).removeSpan(mTransformation);
1753            }
1754        }
1755
1756        mTransformation = method;
1757
1758        if (method instanceof TransformationMethod2) {
1759            TransformationMethod2 method2 = (TransformationMethod2) method;
1760            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1761            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1762        } else {
1763            mAllowTransformationLengthChange = false;
1764        }
1765
1766        setText(mText);
1767
1768        if (hasPasswordTransformationMethod()) {
1769            notifyViewAccessibilityStateChangedIfNeeded(
1770                    AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
1771        }
1772    }
1773
1774    /**
1775     * Returns the top padding of the view, plus space for the top
1776     * Drawable if any.
1777     */
1778    public int getCompoundPaddingTop() {
1779        final Drawables dr = mDrawables;
1780        if (dr == null || dr.mDrawableTop == null) {
1781            return mPaddingTop;
1782        } else {
1783            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1784        }
1785    }
1786
1787    /**
1788     * Returns the bottom padding of the view, plus space for the bottom
1789     * Drawable if any.
1790     */
1791    public int getCompoundPaddingBottom() {
1792        final Drawables dr = mDrawables;
1793        if (dr == null || dr.mDrawableBottom == null) {
1794            return mPaddingBottom;
1795        } else {
1796            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1797        }
1798    }
1799
1800    /**
1801     * Returns the left padding of the view, plus space for the left
1802     * Drawable if any.
1803     */
1804    public int getCompoundPaddingLeft() {
1805        final Drawables dr = mDrawables;
1806        if (dr == null || dr.mDrawableLeft == null) {
1807            return mPaddingLeft;
1808        } else {
1809            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1810        }
1811    }
1812
1813    /**
1814     * Returns the right padding of the view, plus space for the right
1815     * Drawable if any.
1816     */
1817    public int getCompoundPaddingRight() {
1818        final Drawables dr = mDrawables;
1819        if (dr == null || dr.mDrawableRight == null) {
1820            return mPaddingRight;
1821        } else {
1822            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1823        }
1824    }
1825
1826    /**
1827     * Returns the start padding of the view, plus space for the start
1828     * Drawable if any.
1829     */
1830    public int getCompoundPaddingStart() {
1831        resolveDrawables();
1832        switch(getLayoutDirection()) {
1833            default:
1834            case LAYOUT_DIRECTION_LTR:
1835                return getCompoundPaddingLeft();
1836            case LAYOUT_DIRECTION_RTL:
1837                return getCompoundPaddingRight();
1838        }
1839    }
1840
1841    /**
1842     * Returns the end padding of the view, plus space for the end
1843     * Drawable if any.
1844     */
1845    public int getCompoundPaddingEnd() {
1846        resolveDrawables();
1847        switch(getLayoutDirection()) {
1848            default:
1849            case LAYOUT_DIRECTION_LTR:
1850                return getCompoundPaddingRight();
1851            case LAYOUT_DIRECTION_RTL:
1852                return getCompoundPaddingLeft();
1853        }
1854    }
1855
1856    /**
1857     * Returns the extended top padding of the view, including both the
1858     * top Drawable if any and any extra space to keep more than maxLines
1859     * of text from showing.  It is only valid to call this after measuring.
1860     */
1861    public int getExtendedPaddingTop() {
1862        if (mMaxMode != LINES) {
1863            return getCompoundPaddingTop();
1864        }
1865
1866        if (mLayout == null) {
1867            assumeLayout();
1868        }
1869
1870        if (mLayout.getLineCount() <= mMaximum) {
1871            return getCompoundPaddingTop();
1872        }
1873
1874        int top = getCompoundPaddingTop();
1875        int bottom = getCompoundPaddingBottom();
1876        int viewht = getHeight() - top - bottom;
1877        int layoutht = mLayout.getLineTop(mMaximum);
1878
1879        if (layoutht >= viewht) {
1880            return top;
1881        }
1882
1883        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1884        if (gravity == Gravity.TOP) {
1885            return top;
1886        } else if (gravity == Gravity.BOTTOM) {
1887            return top + viewht - layoutht;
1888        } else { // (gravity == Gravity.CENTER_VERTICAL)
1889            return top + (viewht - layoutht) / 2;
1890        }
1891    }
1892
1893    /**
1894     * Returns the extended bottom padding of the view, including both the
1895     * bottom Drawable if any and any extra space to keep more than maxLines
1896     * of text from showing.  It is only valid to call this after measuring.
1897     */
1898    public int getExtendedPaddingBottom() {
1899        if (mMaxMode != LINES) {
1900            return getCompoundPaddingBottom();
1901        }
1902
1903        if (mLayout == null) {
1904            assumeLayout();
1905        }
1906
1907        if (mLayout.getLineCount() <= mMaximum) {
1908            return getCompoundPaddingBottom();
1909        }
1910
1911        int top = getCompoundPaddingTop();
1912        int bottom = getCompoundPaddingBottom();
1913        int viewht = getHeight() - top - bottom;
1914        int layoutht = mLayout.getLineTop(mMaximum);
1915
1916        if (layoutht >= viewht) {
1917            return bottom;
1918        }
1919
1920        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
1921        if (gravity == Gravity.TOP) {
1922            return bottom + viewht - layoutht;
1923        } else if (gravity == Gravity.BOTTOM) {
1924            return bottom;
1925        } else { // (gravity == Gravity.CENTER_VERTICAL)
1926            return bottom + (viewht - layoutht) / 2;
1927        }
1928    }
1929
1930    /**
1931     * Returns the total left padding of the view, including the left
1932     * Drawable if any.
1933     */
1934    public int getTotalPaddingLeft() {
1935        return getCompoundPaddingLeft();
1936    }
1937
1938    /**
1939     * Returns the total right padding of the view, including the right
1940     * Drawable if any.
1941     */
1942    public int getTotalPaddingRight() {
1943        return getCompoundPaddingRight();
1944    }
1945
1946    /**
1947     * Returns the total start padding of the view, including the start
1948     * Drawable if any.
1949     */
1950    public int getTotalPaddingStart() {
1951        return getCompoundPaddingStart();
1952    }
1953
1954    /**
1955     * Returns the total end padding of the view, including the end
1956     * Drawable if any.
1957     */
1958    public int getTotalPaddingEnd() {
1959        return getCompoundPaddingEnd();
1960    }
1961
1962    /**
1963     * Returns the total top padding of the view, including the top
1964     * Drawable if any, the extra space to keep more than maxLines
1965     * from showing, and the vertical offset for gravity, if any.
1966     */
1967    public int getTotalPaddingTop() {
1968        return getExtendedPaddingTop() + getVerticalOffset(true);
1969    }
1970
1971    /**
1972     * Returns the total bottom padding of the view, including the bottom
1973     * Drawable if any, the extra space to keep more than maxLines
1974     * from showing, and the vertical offset for gravity, if any.
1975     */
1976    public int getTotalPaddingBottom() {
1977        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
1978    }
1979
1980    /**
1981     * Sets the Drawables (if any) to appear to the left of, above, to the
1982     * right of, and below the text. Use {@code null} if you do not want a
1983     * Drawable there. The Drawables must already have had
1984     * {@link Drawable#setBounds} called.
1985     * <p>
1986     * Calling this method will overwrite any Drawables previously set using
1987     * {@link #setCompoundDrawablesRelative} or related methods.
1988     *
1989     * @attr ref android.R.styleable#TextView_drawableLeft
1990     * @attr ref android.R.styleable#TextView_drawableTop
1991     * @attr ref android.R.styleable#TextView_drawableRight
1992     * @attr ref android.R.styleable#TextView_drawableBottom
1993     */
1994    public void setCompoundDrawables(@Nullable Drawable left, @Nullable Drawable top,
1995            @Nullable Drawable right, @Nullable Drawable bottom) {
1996        Drawables dr = mDrawables;
1997
1998        // We're switching to absolute, discard relative.
1999        if (dr != null) {
2000            if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2001            dr.mDrawableStart = null;
2002            if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2003            dr.mDrawableEnd = null;
2004            dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2005            dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2006        }
2007
2008        final boolean drawables = left != null || top != null || right != null || bottom != null;
2009        if (!drawables) {
2010            // Clearing drawables...  can we free the data structure?
2011            if (dr != null) {
2012                if (dr.mDrawablePadding == 0) {
2013                    mDrawables = null;
2014                } else {
2015                    // We need to retain the last set padding, so just clear
2016                    // out all of the fields in the existing structure.
2017                    if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
2018                    dr.mDrawableLeft = null;
2019                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
2020                    dr.mDrawableTop = null;
2021                    if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
2022                    dr.mDrawableRight = null;
2023                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
2024                    dr.mDrawableBottom = null;
2025                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2026                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2027                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2028                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2029                }
2030            }
2031        } else {
2032            if (dr == null) {
2033                mDrawables = dr = new Drawables(getContext());
2034            }
2035
2036            mDrawables.mOverride = false;
2037
2038            if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) {
2039                dr.mDrawableLeft.setCallback(null);
2040            }
2041            dr.mDrawableLeft = left;
2042
2043            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
2044                dr.mDrawableTop.setCallback(null);
2045            }
2046            dr.mDrawableTop = top;
2047
2048            if (dr.mDrawableRight != right && dr.mDrawableRight != null) {
2049                dr.mDrawableRight.setCallback(null);
2050            }
2051            dr.mDrawableRight = right;
2052
2053            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
2054                dr.mDrawableBottom.setCallback(null);
2055            }
2056            dr.mDrawableBottom = bottom;
2057
2058            final Rect compoundRect = dr.mCompoundRect;
2059            int[] state;
2060
2061            state = getDrawableState();
2062
2063            if (left != null) {
2064                left.setState(state);
2065                left.copyBounds(compoundRect);
2066                left.setCallback(this);
2067                dr.mDrawableSizeLeft = compoundRect.width();
2068                dr.mDrawableHeightLeft = compoundRect.height();
2069            } else {
2070                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2071            }
2072
2073            if (right != null) {
2074                right.setState(state);
2075                right.copyBounds(compoundRect);
2076                right.setCallback(this);
2077                dr.mDrawableSizeRight = compoundRect.width();
2078                dr.mDrawableHeightRight = compoundRect.height();
2079            } else {
2080                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2081            }
2082
2083            if (top != null) {
2084                top.setState(state);
2085                top.copyBounds(compoundRect);
2086                top.setCallback(this);
2087                dr.mDrawableSizeTop = compoundRect.height();
2088                dr.mDrawableWidthTop = compoundRect.width();
2089            } else {
2090                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2091            }
2092
2093            if (bottom != null) {
2094                bottom.setState(state);
2095                bottom.copyBounds(compoundRect);
2096                bottom.setCallback(this);
2097                dr.mDrawableSizeBottom = compoundRect.height();
2098                dr.mDrawableWidthBottom = compoundRect.width();
2099            } else {
2100                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2101            }
2102        }
2103
2104        // Save initial left/right drawables
2105        if (dr != null) {
2106            dr.mDrawableLeftInitial = left;
2107            dr.mDrawableRightInitial = right;
2108        }
2109
2110        resetResolvedDrawables();
2111        resolveDrawables();
2112        invalidate();
2113        requestLayout();
2114    }
2115
2116    /**
2117     * Sets the Drawables (if any) to appear to the left of, above, to the
2118     * right of, and below the text. Use 0 if you do not want a Drawable there.
2119     * The Drawables' bounds will be set to their intrinsic bounds.
2120     * <p>
2121     * Calling this method will overwrite any Drawables previously set using
2122     * {@link #setCompoundDrawablesRelative} or related methods.
2123     *
2124     * @param left Resource identifier of the left Drawable.
2125     * @param top Resource identifier of the top Drawable.
2126     * @param right Resource identifier of the right Drawable.
2127     * @param bottom Resource identifier of the bottom Drawable.
2128     *
2129     * @attr ref android.R.styleable#TextView_drawableLeft
2130     * @attr ref android.R.styleable#TextView_drawableTop
2131     * @attr ref android.R.styleable#TextView_drawableRight
2132     * @attr ref android.R.styleable#TextView_drawableBottom
2133     */
2134    @android.view.RemotableViewMethod
2135    public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
2136        final Context context = getContext();
2137        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? context.getDrawable(left) : null,
2138                top != 0 ? context.getDrawable(top) : null,
2139                right != 0 ? context.getDrawable(right) : null,
2140                bottom != 0 ? context.getDrawable(bottom) : null);
2141    }
2142
2143    /**
2144     * Sets the Drawables (if any) to appear to the left of, above, to the
2145     * right of, and below the text. Use {@code null} if you do not want a
2146     * Drawable there. The Drawables' bounds will be set to their intrinsic
2147     * bounds.
2148     * <p>
2149     * Calling this method will overwrite any Drawables previously set using
2150     * {@link #setCompoundDrawablesRelative} or related methods.
2151     *
2152     * @attr ref android.R.styleable#TextView_drawableLeft
2153     * @attr ref android.R.styleable#TextView_drawableTop
2154     * @attr ref android.R.styleable#TextView_drawableRight
2155     * @attr ref android.R.styleable#TextView_drawableBottom
2156     */
2157    public void setCompoundDrawablesWithIntrinsicBounds(@Nullable Drawable left,
2158            @Nullable Drawable top, @Nullable Drawable right, @Nullable Drawable bottom) {
2159
2160        if (left != null) {
2161            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
2162        }
2163        if (right != null) {
2164            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
2165        }
2166        if (top != null) {
2167            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2168        }
2169        if (bottom != null) {
2170            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2171        }
2172        setCompoundDrawables(left, top, right, bottom);
2173    }
2174
2175    /**
2176     * Sets the Drawables (if any) to appear to the start of, above, to the end
2177     * of, and below the text. Use {@code null} if you do not want a Drawable
2178     * there. The Drawables must already have had {@link Drawable#setBounds}
2179     * called.
2180     * <p>
2181     * Calling this method will overwrite any Drawables previously set using
2182     * {@link #setCompoundDrawables} or related methods.
2183     *
2184     * @attr ref android.R.styleable#TextView_drawableStart
2185     * @attr ref android.R.styleable#TextView_drawableTop
2186     * @attr ref android.R.styleable#TextView_drawableEnd
2187     * @attr ref android.R.styleable#TextView_drawableBottom
2188     */
2189    public void setCompoundDrawablesRelative(@Nullable Drawable start, @Nullable Drawable top,
2190            @Nullable Drawable end, @Nullable Drawable bottom) {
2191        Drawables dr = mDrawables;
2192
2193        // We're switching to relative, discard absolute.
2194        if (dr != null) {
2195            if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null);
2196            dr.mDrawableLeft = dr.mDrawableLeftInitial = null;
2197            if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null);
2198            dr.mDrawableRight = dr.mDrawableRightInitial = null;
2199            dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2200            dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2201        }
2202
2203        final boolean drawables = start != null || top != null
2204                || end != null || bottom != null;
2205
2206        if (!drawables) {
2207            // Clearing drawables...  can we free the data structure?
2208            if (dr != null) {
2209                if (dr.mDrawablePadding == 0) {
2210                    mDrawables = null;
2211                } else {
2212                    // We need to retain the last set padding, so just clear
2213                    // out all of the fields in the existing structure.
2214                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2215                    dr.mDrawableStart = null;
2216                    if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null);
2217                    dr.mDrawableTop = null;
2218                    if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2219                    dr.mDrawableEnd = null;
2220                    if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null);
2221                    dr.mDrawableBottom = null;
2222                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2223                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2224                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2225                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2226                }
2227            }
2228        } else {
2229            if (dr == null) {
2230                mDrawables = dr = new Drawables(getContext());
2231            }
2232
2233            mDrawables.mOverride = true;
2234
2235            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
2236                dr.mDrawableStart.setCallback(null);
2237            }
2238            dr.mDrawableStart = start;
2239
2240            if (dr.mDrawableTop != top && dr.mDrawableTop != null) {
2241                dr.mDrawableTop.setCallback(null);
2242            }
2243            dr.mDrawableTop = top;
2244
2245            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
2246                dr.mDrawableEnd.setCallback(null);
2247            }
2248            dr.mDrawableEnd = end;
2249
2250            if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) {
2251                dr.mDrawableBottom.setCallback(null);
2252            }
2253            dr.mDrawableBottom = bottom;
2254
2255            final Rect compoundRect = dr.mCompoundRect;
2256            int[] state;
2257
2258            state = getDrawableState();
2259
2260            if (start != null) {
2261                start.setState(state);
2262                start.copyBounds(compoundRect);
2263                start.setCallback(this);
2264                dr.mDrawableSizeStart = compoundRect.width();
2265                dr.mDrawableHeightStart = compoundRect.height();
2266            } else {
2267                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2268            }
2269
2270            if (end != null) {
2271                end.setState(state);
2272                end.copyBounds(compoundRect);
2273                end.setCallback(this);
2274                dr.mDrawableSizeEnd = compoundRect.width();
2275                dr.mDrawableHeightEnd = compoundRect.height();
2276            } else {
2277                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2278            }
2279
2280            if (top != null) {
2281                top.setState(state);
2282                top.copyBounds(compoundRect);
2283                top.setCallback(this);
2284                dr.mDrawableSizeTop = compoundRect.height();
2285                dr.mDrawableWidthTop = compoundRect.width();
2286            } else {
2287                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2288            }
2289
2290            if (bottom != null) {
2291                bottom.setState(state);
2292                bottom.copyBounds(compoundRect);
2293                bottom.setCallback(this);
2294                dr.mDrawableSizeBottom = compoundRect.height();
2295                dr.mDrawableWidthBottom = compoundRect.width();
2296            } else {
2297                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2298            }
2299        }
2300
2301        resetResolvedDrawables();
2302        resolveDrawables();
2303        invalidate();
2304        requestLayout();
2305    }
2306
2307    /**
2308     * Sets the Drawables (if any) to appear to the start of, above, to the end
2309     * of, and below the text. Use 0 if you do not want a Drawable there. The
2310     * Drawables' bounds will be set to their intrinsic bounds.
2311     * <p>
2312     * Calling this method will overwrite any Drawables previously set using
2313     * {@link #setCompoundDrawables} or related methods.
2314     *
2315     * @param start Resource identifier of the start Drawable.
2316     * @param top Resource identifier of the top Drawable.
2317     * @param end Resource identifier of the end Drawable.
2318     * @param bottom Resource identifier of the bottom Drawable.
2319     *
2320     * @attr ref android.R.styleable#TextView_drawableStart
2321     * @attr ref android.R.styleable#TextView_drawableTop
2322     * @attr ref android.R.styleable#TextView_drawableEnd
2323     * @attr ref android.R.styleable#TextView_drawableBottom
2324     */
2325    @android.view.RemotableViewMethod
2326    public void setCompoundDrawablesRelativeWithIntrinsicBounds(int start, int top, int end,
2327            int bottom) {
2328        final Context context = getContext();
2329        setCompoundDrawablesRelativeWithIntrinsicBounds(
2330                start != 0 ? context.getDrawable(start) : null,
2331                top != 0 ? context.getDrawable(top) : null,
2332                end != 0 ? context.getDrawable(end) : null,
2333                bottom != 0 ? context.getDrawable(bottom) : null);
2334    }
2335
2336    /**
2337     * Sets the Drawables (if any) to appear to the start of, above, to the end
2338     * of, and below the text. Use {@code null} if you do not want a Drawable
2339     * there. The Drawables' bounds will be set to their intrinsic bounds.
2340     * <p>
2341     * Calling this method will overwrite any Drawables previously set using
2342     * {@link #setCompoundDrawables} or related methods.
2343     *
2344     * @attr ref android.R.styleable#TextView_drawableStart
2345     * @attr ref android.R.styleable#TextView_drawableTop
2346     * @attr ref android.R.styleable#TextView_drawableEnd
2347     * @attr ref android.R.styleable#TextView_drawableBottom
2348     */
2349    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@Nullable Drawable start,
2350            @Nullable Drawable top, @Nullable Drawable end, @Nullable Drawable bottom) {
2351
2352        if (start != null) {
2353            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2354        }
2355        if (end != null) {
2356            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2357        }
2358        if (top != null) {
2359            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2360        }
2361        if (bottom != null) {
2362            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2363        }
2364        setCompoundDrawablesRelative(start, top, end, bottom);
2365    }
2366
2367    /**
2368     * Returns drawables for the left, top, right, and bottom borders.
2369     *
2370     * @attr ref android.R.styleable#TextView_drawableLeft
2371     * @attr ref android.R.styleable#TextView_drawableTop
2372     * @attr ref android.R.styleable#TextView_drawableRight
2373     * @attr ref android.R.styleable#TextView_drawableBottom
2374     */
2375    @NonNull
2376    public Drawable[] getCompoundDrawables() {
2377        final Drawables dr = mDrawables;
2378        if (dr != null) {
2379            return new Drawable[] {
2380                dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom
2381            };
2382        } else {
2383            return new Drawable[] { null, null, null, null };
2384        }
2385    }
2386
2387    /**
2388     * Returns drawables for the start, top, end, and bottom borders.
2389     *
2390     * @attr ref android.R.styleable#TextView_drawableStart
2391     * @attr ref android.R.styleable#TextView_drawableTop
2392     * @attr ref android.R.styleable#TextView_drawableEnd
2393     * @attr ref android.R.styleable#TextView_drawableBottom
2394     */
2395    @NonNull
2396    public Drawable[] getCompoundDrawablesRelative() {
2397        final Drawables dr = mDrawables;
2398        if (dr != null) {
2399            return new Drawable[] {
2400                dr.mDrawableStart, dr.mDrawableTop, dr.mDrawableEnd, dr.mDrawableBottom
2401            };
2402        } else {
2403            return new Drawable[] { null, null, null, null };
2404        }
2405    }
2406
2407    /**
2408     * Sets the size of the padding between the compound drawables and
2409     * the text.
2410     *
2411     * @attr ref android.R.styleable#TextView_drawablePadding
2412     */
2413    @android.view.RemotableViewMethod
2414    public void setCompoundDrawablePadding(int pad) {
2415        Drawables dr = mDrawables;
2416        if (pad == 0) {
2417            if (dr != null) {
2418                dr.mDrawablePadding = pad;
2419            }
2420        } else {
2421            if (dr == null) {
2422                mDrawables = dr = new Drawables(getContext());
2423            }
2424            dr.mDrawablePadding = pad;
2425        }
2426
2427        invalidate();
2428        requestLayout();
2429    }
2430
2431    /**
2432     * Returns the padding between the compound drawables and the text.
2433     *
2434     * @attr ref android.R.styleable#TextView_drawablePadding
2435     */
2436    public int getCompoundDrawablePadding() {
2437        final Drawables dr = mDrawables;
2438        return dr != null ? dr.mDrawablePadding : 0;
2439    }
2440
2441    @Override
2442    public void setPadding(int left, int top, int right, int bottom) {
2443        if (left != mPaddingLeft ||
2444            right != mPaddingRight ||
2445            top != mPaddingTop ||
2446            bottom != mPaddingBottom) {
2447            nullLayouts();
2448        }
2449
2450        // the super call will requestLayout()
2451        super.setPadding(left, top, right, bottom);
2452        invalidate();
2453    }
2454
2455    @Override
2456    public void setPaddingRelative(int start, int top, int end, int bottom) {
2457        if (start != getPaddingStart() ||
2458            end != getPaddingEnd() ||
2459            top != mPaddingTop ||
2460            bottom != mPaddingBottom) {
2461            nullLayouts();
2462        }
2463
2464        // the super call will requestLayout()
2465        super.setPaddingRelative(start, top, end, bottom);
2466        invalidate();
2467    }
2468
2469    /**
2470     * Gets the autolink mask of the text.  See {@link
2471     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2472     * possible values.
2473     *
2474     * @attr ref android.R.styleable#TextView_autoLink
2475     */
2476    public final int getAutoLinkMask() {
2477        return mAutoLinkMask;
2478    }
2479
2480    /**
2481     * Sets the text color, size, style, hint color, and highlight color
2482     * from the specified TextAppearance resource.
2483     */
2484    public void setTextAppearance(Context context, int resid) {
2485        TypedArray appearance =
2486            context.obtainStyledAttributes(resid,
2487                                           com.android.internal.R.styleable.TextAppearance);
2488
2489        int color;
2490        ColorStateList colors;
2491        int ts;
2492
2493        color = appearance.getColor(
2494                com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0);
2495        if (color != 0) {
2496            setHighlightColor(color);
2497        }
2498
2499        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2500                                              TextAppearance_textColor);
2501        if (colors != null) {
2502            setTextColor(colors);
2503        }
2504
2505        ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
2506                                              TextAppearance_textSize, 0);
2507        if (ts != 0) {
2508            setRawTextSize(ts);
2509        }
2510
2511        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2512                                              TextAppearance_textColorHint);
2513        if (colors != null) {
2514            setHintTextColor(colors);
2515        }
2516
2517        colors = appearance.getColorStateList(com.android.internal.R.styleable.
2518                                              TextAppearance_textColorLink);
2519        if (colors != null) {
2520            setLinkTextColor(colors);
2521        }
2522
2523        String familyName;
2524        int typefaceIndex, styleIndex;
2525
2526        familyName = appearance.getString(com.android.internal.R.styleable.
2527                                          TextAppearance_fontFamily);
2528        typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
2529                                          TextAppearance_typeface, -1);
2530        styleIndex = appearance.getInt(com.android.internal.R.styleable.
2531                                       TextAppearance_textStyle, -1);
2532
2533        setTypefaceFromAttrs(familyName, typefaceIndex, styleIndex);
2534
2535        final int shadowcolor = appearance.getInt(
2536                com.android.internal.R.styleable.TextAppearance_shadowColor, 0);
2537        if (shadowcolor != 0) {
2538            final float dx = appearance.getFloat(
2539                    com.android.internal.R.styleable.TextAppearance_shadowDx, 0);
2540            final float dy = appearance.getFloat(
2541                    com.android.internal.R.styleable.TextAppearance_shadowDy, 0);
2542            final float r = appearance.getFloat(
2543                    com.android.internal.R.styleable.TextAppearance_shadowRadius, 0);
2544
2545            setShadowLayer(r, dx, dy, shadowcolor);
2546        }
2547
2548        if (appearance.getBoolean(com.android.internal.R.styleable.TextAppearance_textAllCaps,
2549                false)) {
2550            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2551        }
2552
2553        if (appearance.hasValue(com.android.internal.R.styleable.TextAppearance_elegantTextHeight)) {
2554            setElegantTextHeight(appearance.getBoolean(
2555                com.android.internal.R.styleable.TextAppearance_elegantTextHeight, false));
2556        }
2557
2558        if (appearance.hasValue(com.android.internal.R.styleable.TextAppearance_letterSpacing)) {
2559            setLetterSpacing(appearance.getFloat(
2560                com.android.internal.R.styleable.TextAppearance_letterSpacing, 0));
2561        }
2562
2563        if (appearance.hasValue(com.android.internal.R.styleable.TextAppearance_fontFeatureSettings)) {
2564            setFontFeatureSettings(appearance.getString(
2565                com.android.internal.R.styleable.TextAppearance_fontFeatureSettings));
2566        }
2567
2568        appearance.recycle();
2569    }
2570
2571    /**
2572     * Get the default {@link Locale} of the text in this TextView.
2573     * @return the default {@link Locale} of the text in this TextView.
2574     */
2575    public Locale getTextLocale() {
2576        return mTextPaint.getTextLocale();
2577    }
2578
2579    /**
2580     * Set the default {@link Locale} of the text in this TextView to the given value. This value
2581     * is used to choose appropriate typefaces for ambiguous characters. Typically used for CJK
2582     * locales to disambiguate Hanzi/Kanji/Hanja characters.
2583     *
2584     * @param locale the {@link Locale} for drawing text, must not be null.
2585     *
2586     * @see Paint#setTextLocale
2587     */
2588    public void setTextLocale(Locale locale) {
2589        mTextPaint.setTextLocale(locale);
2590    }
2591
2592    /**
2593     * @return the size (in pixels) of the default text size in this TextView.
2594     */
2595    @ViewDebug.ExportedProperty(category = "text")
2596    public float getTextSize() {
2597        return mTextPaint.getTextSize();
2598    }
2599
2600    /**
2601     * @return the size (in scaled pixels) of thee default text size in this TextView.
2602     * @hide
2603     */
2604    @ViewDebug.ExportedProperty(category = "text")
2605    public float getScaledTextSize() {
2606        return mTextPaint.getTextSize() / mTextPaint.density;
2607    }
2608
2609    /** @hide */
2610    @ViewDebug.ExportedProperty(category = "text", mapping = {
2611            @ViewDebug.IntToString(from = Typeface.NORMAL, to = "NORMAL"),
2612            @ViewDebug.IntToString(from = Typeface.BOLD, to = "BOLD"),
2613            @ViewDebug.IntToString(from = Typeface.ITALIC, to = "ITALIC"),
2614            @ViewDebug.IntToString(from = Typeface.BOLD_ITALIC, to = "BOLD_ITALIC")
2615    })
2616    public int getTypefaceStyle() {
2617        return mTextPaint.getTypeface().getStyle();
2618    }
2619
2620    /**
2621     * Set the default text size to the given value, interpreted as "scaled
2622     * pixel" units.  This size is adjusted based on the current density and
2623     * user font size preference.
2624     *
2625     * @param size The scaled pixel size.
2626     *
2627     * @attr ref android.R.styleable#TextView_textSize
2628     */
2629    @android.view.RemotableViewMethod
2630    public void setTextSize(float size) {
2631        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2632    }
2633
2634    /**
2635     * Set the default text size to a given unit and value.  See {@link
2636     * TypedValue} for the possible dimension units.
2637     *
2638     * @param unit The desired dimension unit.
2639     * @param size The desired size in the given units.
2640     *
2641     * @attr ref android.R.styleable#TextView_textSize
2642     */
2643    public void setTextSize(int unit, float size) {
2644        Context c = getContext();
2645        Resources r;
2646
2647        if (c == null)
2648            r = Resources.getSystem();
2649        else
2650            r = c.getResources();
2651
2652        setRawTextSize(TypedValue.applyDimension(
2653                unit, size, r.getDisplayMetrics()));
2654    }
2655
2656    private void setRawTextSize(float size) {
2657        if (size != mTextPaint.getTextSize()) {
2658            mTextPaint.setTextSize(size);
2659
2660            if (mLayout != null) {
2661                nullLayouts();
2662                requestLayout();
2663                invalidate();
2664            }
2665        }
2666    }
2667
2668    /**
2669     * @return the extent by which text is currently being stretched
2670     * horizontally.  This will usually be 1.
2671     */
2672    public float getTextScaleX() {
2673        return mTextPaint.getTextScaleX();
2674    }
2675
2676    /**
2677     * Sets the extent by which text should be stretched horizontally.
2678     *
2679     * @attr ref android.R.styleable#TextView_textScaleX
2680     */
2681    @android.view.RemotableViewMethod
2682    public void setTextScaleX(float size) {
2683        if (size != mTextPaint.getTextScaleX()) {
2684            mUserSetTextScaleX = true;
2685            mTextPaint.setTextScaleX(size);
2686
2687            if (mLayout != null) {
2688                nullLayouts();
2689                requestLayout();
2690                invalidate();
2691            }
2692        }
2693    }
2694
2695    /**
2696     * Sets the typeface and style in which the text should be displayed.
2697     * Note that not all Typeface families actually have bold and italic
2698     * variants, so you may need to use
2699     * {@link #setTypeface(Typeface, int)} to get the appearance
2700     * that you actually want.
2701     *
2702     * @see #getTypeface()
2703     *
2704     * @attr ref android.R.styleable#TextView_fontFamily
2705     * @attr ref android.R.styleable#TextView_typeface
2706     * @attr ref android.R.styleable#TextView_textStyle
2707     */
2708    public void setTypeface(Typeface tf) {
2709        if (mTextPaint.getTypeface() != tf) {
2710            mTextPaint.setTypeface(tf);
2711
2712            if (mLayout != null) {
2713                nullLayouts();
2714                requestLayout();
2715                invalidate();
2716            }
2717        }
2718    }
2719
2720    /**
2721     * @return the current typeface and style in which the text is being
2722     * displayed.
2723     *
2724     * @see #setTypeface(Typeface)
2725     *
2726     * @attr ref android.R.styleable#TextView_fontFamily
2727     * @attr ref android.R.styleable#TextView_typeface
2728     * @attr ref android.R.styleable#TextView_textStyle
2729     */
2730    public Typeface getTypeface() {
2731        return mTextPaint.getTypeface();
2732    }
2733
2734    /**
2735     * Set the TextView's elegant height metrics flag. This setting selects font
2736     * variants that have not been compacted to fit Latin-based vertical
2737     * metrics, and also increases top and bottom bounds to provide more space.
2738     *
2739     * @param elegant set the paint's elegant metrics flag.
2740     *
2741     * @attr ref android.R.styleable#TextView_elegantTextHeight
2742     */
2743    public void setElegantTextHeight(boolean elegant) {
2744        mTextPaint.setElegantTextHeight(elegant);
2745    }
2746
2747    /**
2748     * @return the extent by which text is currently being letter-spaced.
2749     * This will normally be 0.
2750     *
2751     * @see #setLetterSpacing(float)
2752     * @see Paint#setLetterSpacing
2753     */
2754    public float getLetterSpacing() {
2755        return mTextPaint.getLetterSpacing();
2756    }
2757
2758    /**
2759     * Sets text letter-spacing.  The value is in 'EM' units.  Typical values
2760     * for slight expansion will be around 0.05.  Negative values tighten text.
2761     *
2762     * @see #getLetterSpacing()
2763     * @see Paint#getLetterSpacing
2764     *
2765     * @attr ref android.R.styleable#TextView_letterSpacing
2766     */
2767    @android.view.RemotableViewMethod
2768    public void setLetterSpacing(float letterSpacing) {
2769        if (letterSpacing != mTextPaint.getLetterSpacing()) {
2770            mTextPaint.setLetterSpacing(letterSpacing);
2771
2772            if (mLayout != null) {
2773                nullLayouts();
2774                requestLayout();
2775                invalidate();
2776            }
2777        }
2778    }
2779
2780    /**
2781     * @return the currently set font feature settings.  Default is null.
2782     *
2783     * @see #setFontFeatureSettings(String)
2784     * @see Paint#setFontFeatureSettings
2785     */
2786    @Nullable
2787    public String getFontFeatureSettings() {
2788        return mTextPaint.getFontFeatureSettings();
2789    }
2790
2791    /**
2792     * Sets font feature settings.  The format is the same as the CSS
2793     * font-feature-settings attribute:
2794     * http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings
2795     *
2796     * @param fontFeatureSettings font feature settings represented as CSS compatible string
2797     * @see #getFontFeatureSettings()
2798     * @see Paint#getFontFeatureSettings
2799     *
2800     * @attr ref android.R.styleable#TextView_fontFeatureSettings
2801     */
2802    @android.view.RemotableViewMethod
2803    public void setFontFeatureSettings(@Nullable String fontFeatureSettings) {
2804        if (fontFeatureSettings != mTextPaint.getFontFeatureSettings()) {
2805            mTextPaint.setFontFeatureSettings(fontFeatureSettings);
2806
2807            if (mLayout != null) {
2808                nullLayouts();
2809                requestLayout();
2810                invalidate();
2811            }
2812        }
2813    }
2814
2815
2816    /**
2817     * Sets the text color for all the states (normal, selected,
2818     * focused) to be this color.
2819     *
2820     * @see #setTextColor(ColorStateList)
2821     * @see #getTextColors()
2822     *
2823     * @attr ref android.R.styleable#TextView_textColor
2824     */
2825    @android.view.RemotableViewMethod
2826    public void setTextColor(int color) {
2827        mTextColor = ColorStateList.valueOf(color);
2828        updateTextColors();
2829    }
2830
2831    /**
2832     * Sets the text color.
2833     *
2834     * @see #setTextColor(int)
2835     * @see #getTextColors()
2836     * @see #setHintTextColor(ColorStateList)
2837     * @see #setLinkTextColor(ColorStateList)
2838     *
2839     * @attr ref android.R.styleable#TextView_textColor
2840     */
2841    public void setTextColor(ColorStateList colors) {
2842        if (colors == null) {
2843            throw new NullPointerException();
2844        }
2845
2846        mTextColor = colors;
2847        updateTextColors();
2848    }
2849
2850    /**
2851     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
2852     *
2853     * @see #setTextColor(ColorStateList)
2854     * @see #setTextColor(int)
2855     *
2856     * @attr ref android.R.styleable#TextView_textColor
2857     */
2858    public final ColorStateList getTextColors() {
2859        return mTextColor;
2860    }
2861
2862    /**
2863     * <p>Return the current color selected for normal text.</p>
2864     *
2865     * @return Returns the current text color.
2866     */
2867    public final int getCurrentTextColor() {
2868        return mCurTextColor;
2869    }
2870
2871    /**
2872     * Sets the color used to display the selection highlight.
2873     *
2874     * @attr ref android.R.styleable#TextView_textColorHighlight
2875     */
2876    @android.view.RemotableViewMethod
2877    public void setHighlightColor(int color) {
2878        if (mHighlightColor != color) {
2879            mHighlightColor = color;
2880            invalidate();
2881        }
2882    }
2883
2884    /**
2885     * @return the color used to display the selection highlight
2886     *
2887     * @see #setHighlightColor(int)
2888     *
2889     * @attr ref android.R.styleable#TextView_textColorHighlight
2890     */
2891    public int getHighlightColor() {
2892        return mHighlightColor;
2893    }
2894
2895    /**
2896     * Sets whether the soft input method will be made visible when this
2897     * TextView gets focused. The default is true.
2898     */
2899    @android.view.RemotableViewMethod
2900    public final void setShowSoftInputOnFocus(boolean show) {
2901        createEditorIfNeeded();
2902        mEditor.mShowSoftInputOnFocus = show;
2903    }
2904
2905    /**
2906     * Returns whether the soft input method will be made visible when this
2907     * TextView gets focused. The default is true.
2908     */
2909    public final boolean getShowSoftInputOnFocus() {
2910        // When there is no Editor, return default true value
2911        return mEditor == null || mEditor.mShowSoftInputOnFocus;
2912    }
2913
2914    /**
2915     * Gives the text a shadow of the specified blur radius and color, the specified
2916     * distance from its drawn position.
2917     * <p>
2918     * The text shadow produced does not interact with the properties on view
2919     * that are responsible for real time shadows,
2920     * {@link View#getElevation() elevation} and
2921     * {@link View#getTranslationZ() translationZ}.
2922     *
2923     * @see Paint#setShadowLayer(float, float, float, int)
2924     *
2925     * @attr ref android.R.styleable#TextView_shadowColor
2926     * @attr ref android.R.styleable#TextView_shadowDx
2927     * @attr ref android.R.styleable#TextView_shadowDy
2928     * @attr ref android.R.styleable#TextView_shadowRadius
2929     */
2930    public void setShadowLayer(float radius, float dx, float dy, int color) {
2931        mTextPaint.setShadowLayer(radius, dx, dy, color);
2932
2933        mShadowRadius = radius;
2934        mShadowDx = dx;
2935        mShadowDy = dy;
2936        mShadowColor = color;
2937
2938        // Will change text clip region
2939        if (mEditor != null) mEditor.invalidateTextDisplayList();
2940        invalidate();
2941    }
2942
2943    /**
2944     * Gets the radius of the shadow layer.
2945     *
2946     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
2947     *
2948     * @see #setShadowLayer(float, float, float, int)
2949     *
2950     * @attr ref android.R.styleable#TextView_shadowRadius
2951     */
2952    public float getShadowRadius() {
2953        return mShadowRadius;
2954    }
2955
2956    /**
2957     * @return the horizontal offset of the shadow layer
2958     *
2959     * @see #setShadowLayer(float, float, float, int)
2960     *
2961     * @attr ref android.R.styleable#TextView_shadowDx
2962     */
2963    public float getShadowDx() {
2964        return mShadowDx;
2965    }
2966
2967    /**
2968     * @return the vertical offset of the shadow layer
2969     *
2970     * @see #setShadowLayer(float, float, float, int)
2971     *
2972     * @attr ref android.R.styleable#TextView_shadowDy
2973     */
2974    public float getShadowDy() {
2975        return mShadowDy;
2976    }
2977
2978    /**
2979     * @return the color of the shadow layer
2980     *
2981     * @see #setShadowLayer(float, float, float, int)
2982     *
2983     * @attr ref android.R.styleable#TextView_shadowColor
2984     */
2985    public int getShadowColor() {
2986        return mShadowColor;
2987    }
2988
2989    /**
2990     * @return the base paint used for the text.  Please use this only to
2991     * consult the Paint's properties and not to change them.
2992     */
2993    public TextPaint getPaint() {
2994        return mTextPaint;
2995    }
2996
2997    /**
2998     * Sets the autolink mask of the text.  See {@link
2999     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
3000     * possible values.
3001     *
3002     * @attr ref android.R.styleable#TextView_autoLink
3003     */
3004    @android.view.RemotableViewMethod
3005    public final void setAutoLinkMask(int mask) {
3006        mAutoLinkMask = mask;
3007    }
3008
3009    /**
3010     * Sets whether the movement method will automatically be set to
3011     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
3012     * set to nonzero and links are detected in {@link #setText}.
3013     * The default is true.
3014     *
3015     * @attr ref android.R.styleable#TextView_linksClickable
3016     */
3017    @android.view.RemotableViewMethod
3018    public final void setLinksClickable(boolean whether) {
3019        mLinksClickable = whether;
3020    }
3021
3022    /**
3023     * Returns whether the movement method will automatically be set to
3024     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
3025     * set to nonzero and links are detected in {@link #setText}.
3026     * The default is true.
3027     *
3028     * @attr ref android.R.styleable#TextView_linksClickable
3029     */
3030    public final boolean getLinksClickable() {
3031        return mLinksClickable;
3032    }
3033
3034    /**
3035     * Returns the list of URLSpans attached to the text
3036     * (by {@link Linkify} or otherwise) if any.  You can call
3037     * {@link URLSpan#getURL} on them to find where they link to
3038     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
3039     * to find the region of the text they are attached to.
3040     */
3041    public URLSpan[] getUrls() {
3042        if (mText instanceof Spanned) {
3043            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
3044        } else {
3045            return new URLSpan[0];
3046        }
3047    }
3048
3049    /**
3050     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
3051     * TextView.
3052     *
3053     * @see #setHintTextColor(ColorStateList)
3054     * @see #getHintTextColors()
3055     * @see #setTextColor(int)
3056     *
3057     * @attr ref android.R.styleable#TextView_textColorHint
3058     */
3059    @android.view.RemotableViewMethod
3060    public final void setHintTextColor(int color) {
3061        mHintTextColor = ColorStateList.valueOf(color);
3062        updateTextColors();
3063    }
3064
3065    /**
3066     * Sets the color of the hint text.
3067     *
3068     * @see #getHintTextColors()
3069     * @see #setHintTextColor(int)
3070     * @see #setTextColor(ColorStateList)
3071     * @see #setLinkTextColor(ColorStateList)
3072     *
3073     * @attr ref android.R.styleable#TextView_textColorHint
3074     */
3075    public final void setHintTextColor(ColorStateList colors) {
3076        mHintTextColor = colors;
3077        updateTextColors();
3078    }
3079
3080    /**
3081     * @return the color of the hint text, for the different states of this TextView.
3082     *
3083     * @see #setHintTextColor(ColorStateList)
3084     * @see #setHintTextColor(int)
3085     * @see #setTextColor(ColorStateList)
3086     * @see #setLinkTextColor(ColorStateList)
3087     *
3088     * @attr ref android.R.styleable#TextView_textColorHint
3089     */
3090    public final ColorStateList getHintTextColors() {
3091        return mHintTextColor;
3092    }
3093
3094    /**
3095     * <p>Return the current color selected to paint the hint text.</p>
3096     *
3097     * @return Returns the current hint text color.
3098     */
3099    public final int getCurrentHintTextColor() {
3100        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
3101    }
3102
3103    /**
3104     * Sets the color of links in the text.
3105     *
3106     * @see #setLinkTextColor(ColorStateList)
3107     * @see #getLinkTextColors()
3108     *
3109     * @attr ref android.R.styleable#TextView_textColorLink
3110     */
3111    @android.view.RemotableViewMethod
3112    public final void setLinkTextColor(int color) {
3113        mLinkTextColor = ColorStateList.valueOf(color);
3114        updateTextColors();
3115    }
3116
3117    /**
3118     * Sets the color of links in the text.
3119     *
3120     * @see #setLinkTextColor(int)
3121     * @see #getLinkTextColors()
3122     * @see #setTextColor(ColorStateList)
3123     * @see #setHintTextColor(ColorStateList)
3124     *
3125     * @attr ref android.R.styleable#TextView_textColorLink
3126     */
3127    public final void setLinkTextColor(ColorStateList colors) {
3128        mLinkTextColor = colors;
3129        updateTextColors();
3130    }
3131
3132    /**
3133     * @return the list of colors used to paint the links in the text, for the different states of
3134     * this TextView
3135     *
3136     * @see #setLinkTextColor(ColorStateList)
3137     * @see #setLinkTextColor(int)
3138     *
3139     * @attr ref android.R.styleable#TextView_textColorLink
3140     */
3141    public final ColorStateList getLinkTextColors() {
3142        return mLinkTextColor;
3143    }
3144
3145    /**
3146     * Sets the horizontal alignment of the text and the
3147     * vertical gravity that will be used when there is extra space
3148     * in the TextView beyond what is required for the text itself.
3149     *
3150     * @see android.view.Gravity
3151     * @attr ref android.R.styleable#TextView_gravity
3152     */
3153    public void setGravity(int gravity) {
3154        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
3155            gravity |= Gravity.START;
3156        }
3157        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
3158            gravity |= Gravity.TOP;
3159        }
3160
3161        boolean newLayout = false;
3162
3163        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
3164            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
3165            newLayout = true;
3166        }
3167
3168        if (gravity != mGravity) {
3169            invalidate();
3170        }
3171
3172        mGravity = gravity;
3173
3174        if (mLayout != null && newLayout) {
3175            // XXX this is heavy-handed because no actual content changes.
3176            int want = mLayout.getWidth();
3177            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
3178
3179            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
3180                          mRight - mLeft - getCompoundPaddingLeft() -
3181                          getCompoundPaddingRight(), true);
3182        }
3183    }
3184
3185    /**
3186     * Returns the horizontal and vertical alignment of this TextView.
3187     *
3188     * @see android.view.Gravity
3189     * @attr ref android.R.styleable#TextView_gravity
3190     */
3191    public int getGravity() {
3192        return mGravity;
3193    }
3194
3195    /**
3196     * @return the flags on the Paint being used to display the text.
3197     * @see Paint#getFlags
3198     */
3199    public int getPaintFlags() {
3200        return mTextPaint.getFlags();
3201    }
3202
3203    /**
3204     * Sets flags on the Paint being used to display the text and
3205     * reflows the text if they are different from the old flags.
3206     * @see Paint#setFlags
3207     */
3208    @android.view.RemotableViewMethod
3209    public void setPaintFlags(int flags) {
3210        if (mTextPaint.getFlags() != flags) {
3211            mTextPaint.setFlags(flags);
3212
3213            if (mLayout != null) {
3214                nullLayouts();
3215                requestLayout();
3216                invalidate();
3217            }
3218        }
3219    }
3220
3221    /**
3222     * Sets whether the text should be allowed to be wider than the
3223     * View is.  If false, it will be wrapped to the width of the View.
3224     *
3225     * @attr ref android.R.styleable#TextView_scrollHorizontally
3226     */
3227    public void setHorizontallyScrolling(boolean whether) {
3228        if (mHorizontallyScrolling != whether) {
3229            mHorizontallyScrolling = whether;
3230
3231            if (mLayout != null) {
3232                nullLayouts();
3233                requestLayout();
3234                invalidate();
3235            }
3236        }
3237    }
3238
3239    /**
3240     * Returns whether the text is allowed to be wider than the View is.
3241     * If false, the text will be wrapped to the width of the View.
3242     *
3243     * @attr ref android.R.styleable#TextView_scrollHorizontally
3244     * @hide
3245     */
3246    public boolean getHorizontallyScrolling() {
3247        return mHorizontallyScrolling;
3248    }
3249
3250    /**
3251     * Makes the TextView at least this many lines tall.
3252     *
3253     * Setting this value overrides any other (minimum) height setting. A single line TextView will
3254     * set this value to 1.
3255     *
3256     * @see #getMinLines()
3257     *
3258     * @attr ref android.R.styleable#TextView_minLines
3259     */
3260    @android.view.RemotableViewMethod
3261    public void setMinLines(int minlines) {
3262        mMinimum = minlines;
3263        mMinMode = LINES;
3264
3265        requestLayout();
3266        invalidate();
3267    }
3268
3269    /**
3270     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
3271     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
3272     *
3273     * @see #setMinLines(int)
3274     *
3275     * @attr ref android.R.styleable#TextView_minLines
3276     */
3277    public int getMinLines() {
3278        return mMinMode == LINES ? mMinimum : -1;
3279    }
3280
3281    /**
3282     * Makes the TextView at least this many pixels tall.
3283     *
3284     * Setting this value overrides any other (minimum) number of lines setting.
3285     *
3286     * @attr ref android.R.styleable#TextView_minHeight
3287     */
3288    @android.view.RemotableViewMethod
3289    public void setMinHeight(int minHeight) {
3290        mMinimum = minHeight;
3291        mMinMode = PIXELS;
3292
3293        requestLayout();
3294        invalidate();
3295    }
3296
3297    /**
3298     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
3299     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
3300     *
3301     * @see #setMinHeight(int)
3302     *
3303     * @attr ref android.R.styleable#TextView_minHeight
3304     */
3305    public int getMinHeight() {
3306        return mMinMode == PIXELS ? mMinimum : -1;
3307    }
3308
3309    /**
3310     * Makes the TextView at most this many lines tall.
3311     *
3312     * Setting this value overrides any other (maximum) height setting.
3313     *
3314     * @attr ref android.R.styleable#TextView_maxLines
3315     */
3316    @android.view.RemotableViewMethod
3317    public void setMaxLines(int maxlines) {
3318        mMaximum = maxlines;
3319        mMaxMode = LINES;
3320
3321        requestLayout();
3322        invalidate();
3323    }
3324
3325    /**
3326     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
3327     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
3328     *
3329     * @see #setMaxLines(int)
3330     *
3331     * @attr ref android.R.styleable#TextView_maxLines
3332     */
3333    public int getMaxLines() {
3334        return mMaxMode == LINES ? mMaximum : -1;
3335    }
3336
3337    /**
3338     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
3339     * {@link #setMaxLines(int)} method.
3340     *
3341     * Setting this value overrides any other (maximum) number of lines setting.
3342     *
3343     * @attr ref android.R.styleable#TextView_maxHeight
3344     */
3345    @android.view.RemotableViewMethod
3346    public void setMaxHeight(int maxHeight) {
3347        mMaximum = maxHeight;
3348        mMaxMode = PIXELS;
3349
3350        requestLayout();
3351        invalidate();
3352    }
3353
3354    /**
3355     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
3356     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
3357     *
3358     * @see #setMaxHeight(int)
3359     *
3360     * @attr ref android.R.styleable#TextView_maxHeight
3361     */
3362    public int getMaxHeight() {
3363        return mMaxMode == PIXELS ? mMaximum : -1;
3364    }
3365
3366    /**
3367     * Makes the TextView exactly this many lines tall.
3368     *
3369     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3370     * height setting. A single line TextView will set this value to 1.
3371     *
3372     * @attr ref android.R.styleable#TextView_lines
3373     */
3374    @android.view.RemotableViewMethod
3375    public void setLines(int lines) {
3376        mMaximum = mMinimum = lines;
3377        mMaxMode = mMinMode = LINES;
3378
3379        requestLayout();
3380        invalidate();
3381    }
3382
3383    /**
3384     * Makes the TextView exactly this many pixels tall.
3385     * You could do the same thing by specifying this number in the
3386     * LayoutParams.
3387     *
3388     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3389     * height setting.
3390     *
3391     * @attr ref android.R.styleable#TextView_height
3392     */
3393    @android.view.RemotableViewMethod
3394    public void setHeight(int pixels) {
3395        mMaximum = mMinimum = pixels;
3396        mMaxMode = mMinMode = PIXELS;
3397
3398        requestLayout();
3399        invalidate();
3400    }
3401
3402    /**
3403     * Makes the TextView at least this many ems wide
3404     *
3405     * @attr ref android.R.styleable#TextView_minEms
3406     */
3407    @android.view.RemotableViewMethod
3408    public void setMinEms(int minems) {
3409        mMinWidth = minems;
3410        mMinWidthMode = EMS;
3411
3412        requestLayout();
3413        invalidate();
3414    }
3415
3416    /**
3417     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
3418     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
3419     *
3420     * @see #setMinEms(int)
3421     * @see #setEms(int)
3422     *
3423     * @attr ref android.R.styleable#TextView_minEms
3424     */
3425    public int getMinEms() {
3426        return mMinWidthMode == EMS ? mMinWidth : -1;
3427    }
3428
3429    /**
3430     * Makes the TextView at least this many pixels wide
3431     *
3432     * @attr ref android.R.styleable#TextView_minWidth
3433     */
3434    @android.view.RemotableViewMethod
3435    public void setMinWidth(int minpixels) {
3436        mMinWidth = minpixels;
3437        mMinWidthMode = PIXELS;
3438
3439        requestLayout();
3440        invalidate();
3441    }
3442
3443    /**
3444     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
3445     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
3446     *
3447     * @see #setMinWidth(int)
3448     * @see #setWidth(int)
3449     *
3450     * @attr ref android.R.styleable#TextView_minWidth
3451     */
3452    public int getMinWidth() {
3453        return mMinWidthMode == PIXELS ? mMinWidth : -1;
3454    }
3455
3456    /**
3457     * Makes the TextView at most this many ems wide
3458     *
3459     * @attr ref android.R.styleable#TextView_maxEms
3460     */
3461    @android.view.RemotableViewMethod
3462    public void setMaxEms(int maxems) {
3463        mMaxWidth = maxems;
3464        mMaxWidthMode = EMS;
3465
3466        requestLayout();
3467        invalidate();
3468    }
3469
3470    /**
3471     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3472     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3473     *
3474     * @see #setMaxEms(int)
3475     * @see #setEms(int)
3476     *
3477     * @attr ref android.R.styleable#TextView_maxEms
3478     */
3479    public int getMaxEms() {
3480        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3481    }
3482
3483    /**
3484     * Makes the TextView at most this many pixels wide
3485     *
3486     * @attr ref android.R.styleable#TextView_maxWidth
3487     */
3488    @android.view.RemotableViewMethod
3489    public void setMaxWidth(int maxpixels) {
3490        mMaxWidth = maxpixels;
3491        mMaxWidthMode = PIXELS;
3492
3493        requestLayout();
3494        invalidate();
3495    }
3496
3497    /**
3498     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3499     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3500     *
3501     * @see #setMaxWidth(int)
3502     * @see #setWidth(int)
3503     *
3504     * @attr ref android.R.styleable#TextView_maxWidth
3505     */
3506    public int getMaxWidth() {
3507        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3508    }
3509
3510    /**
3511     * Makes the TextView exactly this many ems wide
3512     *
3513     * @see #setMaxEms(int)
3514     * @see #setMinEms(int)
3515     * @see #getMinEms()
3516     * @see #getMaxEms()
3517     *
3518     * @attr ref android.R.styleable#TextView_ems
3519     */
3520    @android.view.RemotableViewMethod
3521    public void setEms(int ems) {
3522        mMaxWidth = mMinWidth = ems;
3523        mMaxWidthMode = mMinWidthMode = EMS;
3524
3525        requestLayout();
3526        invalidate();
3527    }
3528
3529    /**
3530     * Makes the TextView exactly this many pixels wide.
3531     * You could do the same thing by specifying this number in the
3532     * LayoutParams.
3533     *
3534     * @see #setMaxWidth(int)
3535     * @see #setMinWidth(int)
3536     * @see #getMinWidth()
3537     * @see #getMaxWidth()
3538     *
3539     * @attr ref android.R.styleable#TextView_width
3540     */
3541    @android.view.RemotableViewMethod
3542    public void setWidth(int pixels) {
3543        mMaxWidth = mMinWidth = pixels;
3544        mMaxWidthMode = mMinWidthMode = PIXELS;
3545
3546        requestLayout();
3547        invalidate();
3548    }
3549
3550    /**
3551     * Sets line spacing for this TextView.  Each line will have its height
3552     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3553     *
3554     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3555     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3556     */
3557    public void setLineSpacing(float add, float mult) {
3558        if (mSpacingAdd != add || mSpacingMult != mult) {
3559            mSpacingAdd = add;
3560            mSpacingMult = mult;
3561
3562            if (mLayout != null) {
3563                nullLayouts();
3564                requestLayout();
3565                invalidate();
3566            }
3567        }
3568    }
3569
3570    /**
3571     * Gets the line spacing multiplier
3572     *
3573     * @return the value by which each line's height is multiplied to get its actual height.
3574     *
3575     * @see #setLineSpacing(float, float)
3576     * @see #getLineSpacingExtra()
3577     *
3578     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3579     */
3580    public float getLineSpacingMultiplier() {
3581        return mSpacingMult;
3582    }
3583
3584    /**
3585     * Gets the line spacing extra space
3586     *
3587     * @return the extra space that is added to the height of each lines of this TextView.
3588     *
3589     * @see #setLineSpacing(float, float)
3590     * @see #getLineSpacingMultiplier()
3591     *
3592     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3593     */
3594    public float getLineSpacingExtra() {
3595        return mSpacingAdd;
3596    }
3597
3598    /**
3599     * Convenience method: Append the specified text to the TextView's
3600     * display buffer, upgrading it to BufferType.EDITABLE if it was
3601     * not already editable.
3602     */
3603    public final void append(CharSequence text) {
3604        append(text, 0, text.length());
3605    }
3606
3607    /**
3608     * Convenience method: Append the specified text slice to the TextView's
3609     * display buffer, upgrading it to BufferType.EDITABLE if it was
3610     * not already editable.
3611     */
3612    public void append(CharSequence text, int start, int end) {
3613        if (!(mText instanceof Editable)) {
3614            setText(mText, BufferType.EDITABLE);
3615        }
3616
3617        ((Editable) mText).append(text, start, end);
3618    }
3619
3620    private void updateTextColors() {
3621        boolean inval = false;
3622        int color = mTextColor.getColorForState(getDrawableState(), 0);
3623        if (color != mCurTextColor) {
3624            mCurTextColor = color;
3625            inval = true;
3626        }
3627        if (mLinkTextColor != null) {
3628            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
3629            if (color != mTextPaint.linkColor) {
3630                mTextPaint.linkColor = color;
3631                inval = true;
3632            }
3633        }
3634        if (mHintTextColor != null) {
3635            color = mHintTextColor.getColorForState(getDrawableState(), 0);
3636            if (color != mCurHintTextColor && mText.length() == 0) {
3637                mCurHintTextColor = color;
3638                inval = true;
3639            }
3640        }
3641        if (inval) {
3642            // Text needs to be redrawn with the new color
3643            if (mEditor != null) mEditor.invalidateTextDisplayList();
3644            invalidate();
3645        }
3646    }
3647
3648    @Override
3649    protected void drawableStateChanged() {
3650        super.drawableStateChanged();
3651        if (mTextColor != null && mTextColor.isStateful()
3652                || (mHintTextColor != null && mHintTextColor.isStateful())
3653                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
3654            updateTextColors();
3655        }
3656
3657        final Drawables dr = mDrawables;
3658        if (dr != null) {
3659            int[] state = getDrawableState();
3660            if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) {
3661                dr.mDrawableTop.setState(state);
3662            }
3663            if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) {
3664                dr.mDrawableBottom.setState(state);
3665            }
3666            if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) {
3667                dr.mDrawableLeft.setState(state);
3668            }
3669            if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) {
3670                dr.mDrawableRight.setState(state);
3671            }
3672            if (dr.mDrawableStart != null && dr.mDrawableStart.isStateful()) {
3673                dr.mDrawableStart.setState(state);
3674            }
3675            if (dr.mDrawableEnd != null && dr.mDrawableEnd.isStateful()) {
3676                dr.mDrawableEnd.setState(state);
3677            }
3678        }
3679    }
3680
3681    @Override
3682    public void drawableHotspotChanged(float x, float y) {
3683        super.drawableHotspotChanged(x, y);
3684
3685        final Drawables dr = mDrawables;
3686        if (dr != null) {
3687            if (dr.mDrawableTop != null) {
3688                dr.mDrawableTop.setHotspot(x, y);
3689            }
3690            if (dr.mDrawableBottom != null) {
3691                dr.mDrawableBottom.setHotspot(x, y);
3692            }
3693            if (dr.mDrawableLeft != null) {
3694                dr.mDrawableLeft.setHotspot(x, y);
3695            }
3696            if (dr.mDrawableRight != null) {
3697                dr.mDrawableRight.setHotspot(x, y);
3698            }
3699            if (dr.mDrawableStart != null) {
3700                dr.mDrawableStart.setHotspot(x, y);
3701            }
3702            if (dr.mDrawableEnd != null) {
3703                dr.mDrawableEnd.setHotspot(x, y);
3704            }
3705        }
3706    }
3707
3708    @Override
3709    public Parcelable onSaveInstanceState() {
3710        Parcelable superState = super.onSaveInstanceState();
3711
3712        // Save state if we are forced to
3713        boolean save = mFreezesText;
3714        int start = 0;
3715        int end = 0;
3716
3717        if (mText != null) {
3718            start = getSelectionStart();
3719            end = getSelectionEnd();
3720            if (start >= 0 || end >= 0) {
3721                // Or save state if there is a selection
3722                save = true;
3723            }
3724        }
3725
3726        if (save) {
3727            SavedState ss = new SavedState(superState);
3728            // XXX Should also save the current scroll position!
3729            ss.selStart = start;
3730            ss.selEnd = end;
3731
3732            if (mText instanceof Spanned) {
3733                Spannable sp = new SpannableStringBuilder(mText);
3734
3735                if (mEditor != null) {
3736                    removeMisspelledSpans(sp);
3737                    sp.removeSpan(mEditor.mSuggestionRangeSpan);
3738                }
3739
3740                ss.text = sp;
3741            } else {
3742                ss.text = mText.toString();
3743            }
3744
3745            if (isFocused() && start >= 0 && end >= 0) {
3746                ss.frozenWithFocus = true;
3747            }
3748
3749            ss.error = getError();
3750
3751            return ss;
3752        }
3753
3754        return superState;
3755    }
3756
3757    void removeMisspelledSpans(Spannable spannable) {
3758        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
3759                SuggestionSpan.class);
3760        for (int i = 0; i < suggestionSpans.length; i++) {
3761            int flags = suggestionSpans[i].getFlags();
3762            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
3763                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
3764                spannable.removeSpan(suggestionSpans[i]);
3765            }
3766        }
3767    }
3768
3769    @Override
3770    public void onRestoreInstanceState(Parcelable state) {
3771        if (!(state instanceof SavedState)) {
3772            super.onRestoreInstanceState(state);
3773            return;
3774        }
3775
3776        SavedState ss = (SavedState)state;
3777        super.onRestoreInstanceState(ss.getSuperState());
3778
3779        // XXX restore buffer type too, as well as lots of other stuff
3780        if (ss.text != null) {
3781            setText(ss.text);
3782        }
3783
3784        if (ss.selStart >= 0 && ss.selEnd >= 0) {
3785            if (mText instanceof Spannable) {
3786                int len = mText.length();
3787
3788                if (ss.selStart > len || ss.selEnd > len) {
3789                    String restored = "";
3790
3791                    if (ss.text != null) {
3792                        restored = "(restored) ";
3793                    }
3794
3795                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
3796                          "/" + ss.selEnd + " out of range for " + restored +
3797                          "text " + mText);
3798                } else {
3799                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
3800
3801                    if (ss.frozenWithFocus) {
3802                        createEditorIfNeeded();
3803                        mEditor.mFrozenWithFocus = true;
3804                    }
3805                }
3806            }
3807        }
3808
3809        if (ss.error != null) {
3810            final CharSequence error = ss.error;
3811            // Display the error later, after the first layout pass
3812            post(new Runnable() {
3813                public void run() {
3814                    setError(error);
3815                }
3816            });
3817        }
3818    }
3819
3820    /**
3821     * Control whether this text view saves its entire text contents when
3822     * freezing to an icicle, in addition to dynamic state such as cursor
3823     * position.  By default this is false, not saving the text.  Set to true
3824     * if the text in the text view is not being saved somewhere else in
3825     * persistent storage (such as in a content provider) so that if the
3826     * view is later thawed the user will not lose their data.
3827     *
3828     * @param freezesText Controls whether a frozen icicle should include the
3829     * entire text data: true to include it, false to not.
3830     *
3831     * @attr ref android.R.styleable#TextView_freezesText
3832     */
3833    @android.view.RemotableViewMethod
3834    public void setFreezesText(boolean freezesText) {
3835        mFreezesText = freezesText;
3836    }
3837
3838    /**
3839     * Return whether this text view is including its entire text contents
3840     * in frozen icicles.
3841     *
3842     * @return Returns true if text is included, false if it isn't.
3843     *
3844     * @see #setFreezesText
3845     */
3846    public boolean getFreezesText() {
3847        return mFreezesText;
3848    }
3849
3850    ///////////////////////////////////////////////////////////////////////////
3851
3852    /**
3853     * Sets the Factory used to create new Editables.
3854     */
3855    public final void setEditableFactory(Editable.Factory factory) {
3856        mEditableFactory = factory;
3857        setText(mText);
3858    }
3859
3860    /**
3861     * Sets the Factory used to create new Spannables.
3862     */
3863    public final void setSpannableFactory(Spannable.Factory factory) {
3864        mSpannableFactory = factory;
3865        setText(mText);
3866    }
3867
3868    /**
3869     * Sets the string value of the TextView. TextView <em>does not</em> accept
3870     * HTML-like formatting, which you can do with text strings in XML resource files.
3871     * To style your strings, attach android.text.style.* objects to a
3872     * {@link android.text.SpannableString SpannableString}, or see the
3873     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
3874     * Available Resource Types</a> documentation for an example of setting
3875     * formatted text in the XML resource file.
3876     *
3877     * @attr ref android.R.styleable#TextView_text
3878     */
3879    @android.view.RemotableViewMethod
3880    public final void setText(CharSequence text) {
3881        setText(text, mBufferType);
3882    }
3883
3884    /**
3885     * Like {@link #setText(CharSequence)},
3886     * except that the cursor position (if any) is retained in the new text.
3887     *
3888     * @param text The new text to place in the text view.
3889     *
3890     * @see #setText(CharSequence)
3891     */
3892    @android.view.RemotableViewMethod
3893    public final void setTextKeepState(CharSequence text) {
3894        setTextKeepState(text, mBufferType);
3895    }
3896
3897    /**
3898     * Sets the text that this TextView is to display (see
3899     * {@link #setText(CharSequence)}) and also sets whether it is stored
3900     * in a styleable/spannable buffer and whether it is editable.
3901     *
3902     * @attr ref android.R.styleable#TextView_text
3903     * @attr ref android.R.styleable#TextView_bufferType
3904     */
3905    public void setText(CharSequence text, BufferType type) {
3906        setText(text, type, true, 0);
3907
3908        if (mCharWrapper != null) {
3909            mCharWrapper.mChars = null;
3910        }
3911    }
3912
3913    private void setText(CharSequence text, BufferType type,
3914                         boolean notifyBefore, int oldlen) {
3915        if (text == null) {
3916            text = "";
3917        }
3918
3919        // If suggestions are not enabled, remove the suggestion spans from the text
3920        if (!isSuggestionsEnabled()) {
3921            text = removeSuggestionSpans(text);
3922        }
3923
3924        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
3925
3926        if (text instanceof Spanned &&
3927            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
3928            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
3929                setHorizontalFadingEdgeEnabled(true);
3930                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
3931            } else {
3932                setHorizontalFadingEdgeEnabled(false);
3933                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
3934            }
3935            setEllipsize(TextUtils.TruncateAt.MARQUEE);
3936        }
3937
3938        int n = mFilters.length;
3939        for (int i = 0; i < n; i++) {
3940            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
3941            if (out != null) {
3942                text = out;
3943            }
3944        }
3945
3946        if (notifyBefore) {
3947            if (mText != null) {
3948                oldlen = mText.length();
3949                sendBeforeTextChanged(mText, 0, oldlen, text.length());
3950            } else {
3951                sendBeforeTextChanged("", 0, 0, text.length());
3952            }
3953        }
3954
3955        boolean needEditableForNotification = false;
3956
3957        if (mListeners != null && mListeners.size() != 0) {
3958            needEditableForNotification = true;
3959        }
3960
3961        if (type == BufferType.EDITABLE || getKeyListener() != null ||
3962                needEditableForNotification) {
3963            createEditorIfNeeded();
3964            Editable t = mEditableFactory.newEditable(text);
3965            text = t;
3966            setFilters(t, mFilters);
3967            InputMethodManager imm = InputMethodManager.peekInstance();
3968            if (imm != null) imm.restartInput(this);
3969        } else if (type == BufferType.SPANNABLE || mMovement != null) {
3970            text = mSpannableFactory.newSpannable(text);
3971        } else if (!(text instanceof CharWrapper)) {
3972            text = TextUtils.stringOrSpannedString(text);
3973        }
3974
3975        if (mAutoLinkMask != 0) {
3976            Spannable s2;
3977
3978            if (type == BufferType.EDITABLE || text instanceof Spannable) {
3979                s2 = (Spannable) text;
3980            } else {
3981                s2 = mSpannableFactory.newSpannable(text);
3982            }
3983
3984            if (Linkify.addLinks(s2, mAutoLinkMask)) {
3985                text = s2;
3986                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
3987
3988                /*
3989                 * We must go ahead and set the text before changing the
3990                 * movement method, because setMovementMethod() may call
3991                 * setText() again to try to upgrade the buffer type.
3992                 */
3993                mText = text;
3994
3995                // Do not change the movement method for text that support text selection as it
3996                // would prevent an arbitrary cursor displacement.
3997                if (mLinksClickable && !textCanBeSelected()) {
3998                    setMovementMethod(LinkMovementMethod.getInstance());
3999                }
4000            }
4001        }
4002
4003        mBufferType = type;
4004        mText = text;
4005
4006        if (mTransformation == null) {
4007            mTransformed = text;
4008        } else {
4009            mTransformed = mTransformation.getTransformation(text, this);
4010        }
4011
4012        final int textLength = text.length();
4013
4014        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
4015            Spannable sp = (Spannable) text;
4016
4017            // Remove any ChangeWatchers that might have come from other TextViews.
4018            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
4019            final int count = watchers.length;
4020            for (int i = 0; i < count; i++) {
4021                sp.removeSpan(watchers[i]);
4022            }
4023
4024            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
4025
4026            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
4027                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
4028
4029            if (mEditor != null) mEditor.addSpanWatchers(sp);
4030
4031            if (mTransformation != null) {
4032                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
4033            }
4034
4035            if (mMovement != null) {
4036                mMovement.initialize(this, (Spannable) text);
4037
4038                /*
4039                 * Initializing the movement method will have set the
4040                 * selection, so reset mSelectionMoved to keep that from
4041                 * interfering with the normal on-focus selection-setting.
4042                 */
4043                if (mEditor != null) mEditor.mSelectionMoved = false;
4044            }
4045        }
4046
4047        if (mLayout != null) {
4048            checkForRelayout();
4049        }
4050
4051        sendOnTextChanged(text, 0, oldlen, textLength);
4052        onTextChanged(text, 0, oldlen, textLength);
4053
4054        notifyViewAccessibilityStateChangedIfNeeded(AccessibilityEvent.CONTENT_CHANGE_TYPE_TEXT);
4055
4056        if (needEditableForNotification) {
4057            sendAfterTextChanged((Editable) text);
4058        }
4059
4060        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
4061        if (mEditor != null) mEditor.prepareCursorControllers();
4062    }
4063
4064    /**
4065     * Sets the TextView to display the specified slice of the specified
4066     * char array.  You must promise that you will not change the contents
4067     * of the array except for right before another call to setText(),
4068     * since the TextView has no way to know that the text
4069     * has changed and that it needs to invalidate and re-layout.
4070     */
4071    public final void setText(char[] text, int start, int len) {
4072        int oldlen = 0;
4073
4074        if (start < 0 || len < 0 || start + len > text.length) {
4075            throw new IndexOutOfBoundsException(start + ", " + len);
4076        }
4077
4078        /*
4079         * We must do the before-notification here ourselves because if
4080         * the old text is a CharWrapper we destroy it before calling
4081         * into the normal path.
4082         */
4083        if (mText != null) {
4084            oldlen = mText.length();
4085            sendBeforeTextChanged(mText, 0, oldlen, len);
4086        } else {
4087            sendBeforeTextChanged("", 0, 0, len);
4088        }
4089
4090        if (mCharWrapper == null) {
4091            mCharWrapper = new CharWrapper(text, start, len);
4092        } else {
4093            mCharWrapper.set(text, start, len);
4094        }
4095
4096        setText(mCharWrapper, mBufferType, false, oldlen);
4097    }
4098
4099    /**
4100     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
4101     * except that the cursor position (if any) is retained in the new text.
4102     *
4103     * @see #setText(CharSequence, android.widget.TextView.BufferType)
4104     */
4105    public final void setTextKeepState(CharSequence text, BufferType type) {
4106        int start = getSelectionStart();
4107        int end = getSelectionEnd();
4108        int len = text.length();
4109
4110        setText(text, type);
4111
4112        if (start >= 0 || end >= 0) {
4113            if (mText instanceof Spannable) {
4114                Selection.setSelection((Spannable) mText,
4115                                       Math.max(0, Math.min(start, len)),
4116                                       Math.max(0, Math.min(end, len)));
4117            }
4118        }
4119    }
4120
4121    @android.view.RemotableViewMethod
4122    public final void setText(int resid) {
4123        setText(getContext().getResources().getText(resid));
4124    }
4125
4126    public final void setText(int resid, BufferType type) {
4127        setText(getContext().getResources().getText(resid), type);
4128    }
4129
4130    /**
4131     * Sets the text to be displayed when the text of the TextView is empty.
4132     * Null means to use the normal empty text. The hint does not currently
4133     * participate in determining the size of the view.
4134     *
4135     * @attr ref android.R.styleable#TextView_hint
4136     */
4137    @android.view.RemotableViewMethod
4138    public final void setHint(CharSequence hint) {
4139        mHint = TextUtils.stringOrSpannedString(hint);
4140
4141        if (mLayout != null) {
4142            checkForRelayout();
4143        }
4144
4145        if (mText.length() == 0) {
4146            invalidate();
4147        }
4148
4149        // Invalidate display list if hint is currently used
4150        if (mEditor != null && mText.length() == 0 && mHint != null) {
4151            mEditor.invalidateTextDisplayList();
4152        }
4153    }
4154
4155    /**
4156     * Sets the text to be displayed when the text of the TextView is empty,
4157     * from a resource.
4158     *
4159     * @attr ref android.R.styleable#TextView_hint
4160     */
4161    @android.view.RemotableViewMethod
4162    public final void setHint(int resid) {
4163        setHint(getContext().getResources().getText(resid));
4164    }
4165
4166    /**
4167     * Returns the hint that is displayed when the text of the TextView
4168     * is empty.
4169     *
4170     * @attr ref android.R.styleable#TextView_hint
4171     */
4172    @ViewDebug.CapturedViewProperty
4173    public CharSequence getHint() {
4174        return mHint;
4175    }
4176
4177    boolean isSingleLine() {
4178        return mSingleLine;
4179    }
4180
4181    private static boolean isMultilineInputType(int type) {
4182        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
4183            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
4184    }
4185
4186    /**
4187     * Removes the suggestion spans.
4188     */
4189    CharSequence removeSuggestionSpans(CharSequence text) {
4190       if (text instanceof Spanned) {
4191           Spannable spannable;
4192           if (text instanceof Spannable) {
4193               spannable = (Spannable) text;
4194           } else {
4195               spannable = new SpannableString(text);
4196               text = spannable;
4197           }
4198
4199           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
4200           for (int i = 0; i < spans.length; i++) {
4201               spannable.removeSpan(spans[i]);
4202           }
4203       }
4204       return text;
4205    }
4206
4207    /**
4208     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
4209     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
4210     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
4211     * then a soft keyboard will not be displayed for this text view.
4212     *
4213     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
4214     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
4215     * type.
4216     *
4217     * @see #getInputType()
4218     * @see #setRawInputType(int)
4219     * @see android.text.InputType
4220     * @attr ref android.R.styleable#TextView_inputType
4221     */
4222    public void setInputType(int type) {
4223        final boolean wasPassword = isPasswordInputType(getInputType());
4224        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
4225        setInputType(type, false);
4226        final boolean isPassword = isPasswordInputType(type);
4227        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
4228        boolean forceUpdate = false;
4229        if (isPassword) {
4230            setTransformationMethod(PasswordTransformationMethod.getInstance());
4231            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4232        } else if (isVisiblePassword) {
4233            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4234                forceUpdate = true;
4235            }
4236            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4237        } else if (wasPassword || wasVisiblePassword) {
4238            // not in password mode, clean up typeface and transformation
4239            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
4240            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4241                forceUpdate = true;
4242            }
4243        }
4244
4245        boolean singleLine = !isMultilineInputType(type);
4246
4247        // We need to update the single line mode if it has changed or we
4248        // were previously in password mode.
4249        if (mSingleLine != singleLine || forceUpdate) {
4250            // Change single line mode, but only change the transformation if
4251            // we are not in password mode.
4252            applySingleLine(singleLine, !isPassword, true);
4253        }
4254
4255        if (!isSuggestionsEnabled()) {
4256            mText = removeSuggestionSpans(mText);
4257        }
4258
4259        InputMethodManager imm = InputMethodManager.peekInstance();
4260        if (imm != null) imm.restartInput(this);
4261    }
4262
4263    /**
4264     * It would be better to rely on the input type for everything. A password inputType should have
4265     * a password transformation. We should hence use isPasswordInputType instead of this method.
4266     *
4267     * We should:
4268     * - Call setInputType in setKeyListener instead of changing the input type directly (which
4269     * would install the correct transformation).
4270     * - Refuse the installation of a non-password transformation in setTransformation if the input
4271     * type is password.
4272     *
4273     * However, this is like this for legacy reasons and we cannot break existing apps. This method
4274     * is useful since it matches what the user can see (obfuscated text or not).
4275     *
4276     * @return true if the current transformation method is of the password type.
4277     */
4278    private boolean hasPasswordTransformationMethod() {
4279        return mTransformation instanceof PasswordTransformationMethod;
4280    }
4281
4282    private static boolean isPasswordInputType(int inputType) {
4283        final int variation =
4284                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4285        return variation
4286                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
4287                || variation
4288                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
4289                || variation
4290                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
4291    }
4292
4293    private static boolean isVisiblePasswordInputType(int inputType) {
4294        final int variation =
4295                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4296        return variation
4297                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
4298    }
4299
4300    /**
4301     * Directly change the content type integer of the text view, without
4302     * modifying any other state.
4303     * @see #setInputType(int)
4304     * @see android.text.InputType
4305     * @attr ref android.R.styleable#TextView_inputType
4306     */
4307    public void setRawInputType(int type) {
4308        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
4309        createEditorIfNeeded();
4310        mEditor.mInputType = type;
4311    }
4312
4313    private void setInputType(int type, boolean direct) {
4314        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
4315        KeyListener input;
4316        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
4317            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
4318            TextKeyListener.Capitalize cap;
4319            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
4320                cap = TextKeyListener.Capitalize.CHARACTERS;
4321            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
4322                cap = TextKeyListener.Capitalize.WORDS;
4323            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
4324                cap = TextKeyListener.Capitalize.SENTENCES;
4325            } else {
4326                cap = TextKeyListener.Capitalize.NONE;
4327            }
4328            input = TextKeyListener.getInstance(autotext, cap);
4329        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
4330            input = DigitsKeyListener.getInstance(
4331                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
4332                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
4333        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
4334            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
4335                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
4336                    input = DateKeyListener.getInstance();
4337                    break;
4338                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
4339                    input = TimeKeyListener.getInstance();
4340                    break;
4341                default:
4342                    input = DateTimeKeyListener.getInstance();
4343                    break;
4344            }
4345        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
4346            input = DialerKeyListener.getInstance();
4347        } else {
4348            input = TextKeyListener.getInstance();
4349        }
4350        setRawInputType(type);
4351        if (direct) {
4352            createEditorIfNeeded();
4353            mEditor.mKeyListener = input;
4354        } else {
4355            setKeyListenerOnly(input);
4356        }
4357    }
4358
4359    /**
4360     * Get the type of the editable content.
4361     *
4362     * @see #setInputType(int)
4363     * @see android.text.InputType
4364     */
4365    public int getInputType() {
4366        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
4367    }
4368
4369    /**
4370     * Change the editor type integer associated with the text view, which
4371     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
4372     * has focus.
4373     * @see #getImeOptions
4374     * @see android.view.inputmethod.EditorInfo
4375     * @attr ref android.R.styleable#TextView_imeOptions
4376     */
4377    public void setImeOptions(int imeOptions) {
4378        createEditorIfNeeded();
4379        mEditor.createInputContentTypeIfNeeded();
4380        mEditor.mInputContentType.imeOptions = imeOptions;
4381    }
4382
4383    /**
4384     * Get the type of the IME editor.
4385     *
4386     * @see #setImeOptions(int)
4387     * @see android.view.inputmethod.EditorInfo
4388     */
4389    public int getImeOptions() {
4390        return mEditor != null && mEditor.mInputContentType != null
4391                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
4392    }
4393
4394    /**
4395     * Change the custom IME action associated with the text view, which
4396     * will be reported to an IME with {@link EditorInfo#actionLabel}
4397     * and {@link EditorInfo#actionId} when it has focus.
4398     * @see #getImeActionLabel
4399     * @see #getImeActionId
4400     * @see android.view.inputmethod.EditorInfo
4401     * @attr ref android.R.styleable#TextView_imeActionLabel
4402     * @attr ref android.R.styleable#TextView_imeActionId
4403     */
4404    public void setImeActionLabel(CharSequence label, int actionId) {
4405        createEditorIfNeeded();
4406        mEditor.createInputContentTypeIfNeeded();
4407        mEditor.mInputContentType.imeActionLabel = label;
4408        mEditor.mInputContentType.imeActionId = actionId;
4409    }
4410
4411    /**
4412     * Get the IME action label previous set with {@link #setImeActionLabel}.
4413     *
4414     * @see #setImeActionLabel
4415     * @see android.view.inputmethod.EditorInfo
4416     */
4417    public CharSequence getImeActionLabel() {
4418        return mEditor != null && mEditor.mInputContentType != null
4419                ? mEditor.mInputContentType.imeActionLabel : null;
4420    }
4421
4422    /**
4423     * Get the IME action ID previous set with {@link #setImeActionLabel}.
4424     *
4425     * @see #setImeActionLabel
4426     * @see android.view.inputmethod.EditorInfo
4427     */
4428    public int getImeActionId() {
4429        return mEditor != null && mEditor.mInputContentType != null
4430                ? mEditor.mInputContentType.imeActionId : 0;
4431    }
4432
4433    /**
4434     * Set a special listener to be called when an action is performed
4435     * on the text view.  This will be called when the enter key is pressed,
4436     * or when an action supplied to the IME is selected by the user.  Setting
4437     * this means that the normal hard key event will not insert a newline
4438     * into the text view, even if it is multi-line; holding down the ALT
4439     * modifier will, however, allow the user to insert a newline character.
4440     */
4441    public void setOnEditorActionListener(OnEditorActionListener l) {
4442        createEditorIfNeeded();
4443        mEditor.createInputContentTypeIfNeeded();
4444        mEditor.mInputContentType.onEditorActionListener = l;
4445    }
4446
4447    /**
4448     * Called when an attached input method calls
4449     * {@link InputConnection#performEditorAction(int)
4450     * InputConnection.performEditorAction()}
4451     * for this text view.  The default implementation will call your action
4452     * listener supplied to {@link #setOnEditorActionListener}, or perform
4453     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
4454     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
4455     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
4456     * EditorInfo.IME_ACTION_DONE}.
4457     *
4458     * <p>For backwards compatibility, if no IME options have been set and the
4459     * text view would not normally advance focus on enter, then
4460     * the NEXT and DONE actions received here will be turned into an enter
4461     * key down/up pair to go through the normal key handling.
4462     *
4463     * @param actionCode The code of the action being performed.
4464     *
4465     * @see #setOnEditorActionListener
4466     */
4467    public void onEditorAction(int actionCode) {
4468        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
4469        if (ict != null) {
4470            if (ict.onEditorActionListener != null) {
4471                if (ict.onEditorActionListener.onEditorAction(this,
4472                        actionCode, null)) {
4473                    return;
4474                }
4475            }
4476
4477            // This is the handling for some default action.
4478            // Note that for backwards compatibility we don't do this
4479            // default handling if explicit ime options have not been given,
4480            // instead turning this into the normal enter key codes that an
4481            // app may be expecting.
4482            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
4483                View v = focusSearch(FOCUS_FORWARD);
4484                if (v != null) {
4485                    if (!v.requestFocus(FOCUS_FORWARD)) {
4486                        throw new IllegalStateException("focus search returned a view " +
4487                                "that wasn't able to take focus!");
4488                    }
4489                }
4490                return;
4491
4492            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4493                View v = focusSearch(FOCUS_BACKWARD);
4494                if (v != null) {
4495                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4496                        throw new IllegalStateException("focus search returned a view " +
4497                                "that wasn't able to take focus!");
4498                    }
4499                }
4500                return;
4501
4502            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4503                InputMethodManager imm = InputMethodManager.peekInstance();
4504                if (imm != null && imm.isActive(this)) {
4505                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4506                }
4507                return;
4508            }
4509        }
4510
4511        ViewRootImpl viewRootImpl = getViewRootImpl();
4512        if (viewRootImpl != null) {
4513            long eventTime = SystemClock.uptimeMillis();
4514            viewRootImpl.dispatchKeyFromIme(
4515                    new KeyEvent(eventTime, eventTime,
4516                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4517                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4518                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4519                    | KeyEvent.FLAG_EDITOR_ACTION));
4520            viewRootImpl.dispatchKeyFromIme(
4521                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4522                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4523                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4524                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4525                    | KeyEvent.FLAG_EDITOR_ACTION));
4526        }
4527    }
4528
4529    /**
4530     * Set the private content type of the text, which is the
4531     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4532     * field that will be filled in when creating an input connection.
4533     *
4534     * @see #getPrivateImeOptions()
4535     * @see EditorInfo#privateImeOptions
4536     * @attr ref android.R.styleable#TextView_privateImeOptions
4537     */
4538    public void setPrivateImeOptions(String type) {
4539        createEditorIfNeeded();
4540        mEditor.createInputContentTypeIfNeeded();
4541        mEditor.mInputContentType.privateImeOptions = type;
4542    }
4543
4544    /**
4545     * Get the private type of the content.
4546     *
4547     * @see #setPrivateImeOptions(String)
4548     * @see EditorInfo#privateImeOptions
4549     */
4550    public String getPrivateImeOptions() {
4551        return mEditor != null && mEditor.mInputContentType != null
4552                ? mEditor.mInputContentType.privateImeOptions : null;
4553    }
4554
4555    /**
4556     * Set the extra input data of the text, which is the
4557     * {@link EditorInfo#extras TextBoxAttribute.extras}
4558     * Bundle that will be filled in when creating an input connection.  The
4559     * given integer is the resource ID of an XML resource holding an
4560     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4561     *
4562     * @see #getInputExtras(boolean)
4563     * @see EditorInfo#extras
4564     * @attr ref android.R.styleable#TextView_editorExtras
4565     */
4566    public void setInputExtras(int xmlResId) throws XmlPullParserException, IOException {
4567        createEditorIfNeeded();
4568        XmlResourceParser parser = getResources().getXml(xmlResId);
4569        mEditor.createInputContentTypeIfNeeded();
4570        mEditor.mInputContentType.extras = new Bundle();
4571        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4572    }
4573
4574    /**
4575     * Retrieve the input extras currently associated with the text view, which
4576     * can be viewed as well as modified.
4577     *
4578     * @param create If true, the extras will be created if they don't already
4579     * exist.  Otherwise, null will be returned if none have been created.
4580     * @see #setInputExtras(int)
4581     * @see EditorInfo#extras
4582     * @attr ref android.R.styleable#TextView_editorExtras
4583     */
4584    public Bundle getInputExtras(boolean create) {
4585        if (mEditor == null && !create) return null;
4586        createEditorIfNeeded();
4587        if (mEditor.mInputContentType == null) {
4588            if (!create) return null;
4589            mEditor.createInputContentTypeIfNeeded();
4590        }
4591        if (mEditor.mInputContentType.extras == null) {
4592            if (!create) return null;
4593            mEditor.mInputContentType.extras = new Bundle();
4594        }
4595        return mEditor.mInputContentType.extras;
4596    }
4597
4598    /**
4599     * Returns the error message that was set to be displayed with
4600     * {@link #setError}, or <code>null</code> if no error was set
4601     * or if it the error was cleared by the widget after user input.
4602     */
4603    public CharSequence getError() {
4604        return mEditor == null ? null : mEditor.mError;
4605    }
4606
4607    /**
4608     * Sets the right-hand compound drawable of the TextView to the "error"
4609     * icon and sets an error message that will be displayed in a popup when
4610     * the TextView has focus.  The icon and error message will be reset to
4611     * null when any key events cause changes to the TextView's text.  If the
4612     * <code>error</code> is <code>null</code>, the error message and icon
4613     * will be cleared.
4614     */
4615    @android.view.RemotableViewMethod
4616    public void setError(CharSequence error) {
4617        if (error == null) {
4618            setError(null, null);
4619        } else {
4620            Drawable dr = getContext().getDrawable(
4621                    com.android.internal.R.drawable.indicator_input_error);
4622
4623            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
4624            setError(error, dr);
4625        }
4626    }
4627
4628    /**
4629     * Sets the right-hand compound drawable of the TextView to the specified
4630     * icon and sets an error message that will be displayed in a popup when
4631     * the TextView has focus.  The icon and error message will be reset to
4632     * null when any key events cause changes to the TextView's text.  The
4633     * drawable must already have had {@link Drawable#setBounds} set on it.
4634     * If the <code>error</code> is <code>null</code>, the error message will
4635     * be cleared (and you should provide a <code>null</code> icon as well).
4636     */
4637    public void setError(CharSequence error, Drawable icon) {
4638        createEditorIfNeeded();
4639        mEditor.setError(error, icon);
4640        notifyViewAccessibilityStateChangedIfNeeded(
4641                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
4642    }
4643
4644    @Override
4645    protected boolean setFrame(int l, int t, int r, int b) {
4646        boolean result = super.setFrame(l, t, r, b);
4647
4648        if (mEditor != null) mEditor.setFrame();
4649
4650        restartMarqueeIfNeeded();
4651
4652        return result;
4653    }
4654
4655    private void restartMarqueeIfNeeded() {
4656        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
4657            mRestartMarquee = false;
4658            startMarquee();
4659        }
4660    }
4661
4662    /**
4663     * Sets the list of input filters that will be used if the buffer is
4664     * Editable. Has no effect otherwise.
4665     *
4666     * @attr ref android.R.styleable#TextView_maxLength
4667     */
4668    public void setFilters(InputFilter[] filters) {
4669        if (filters == null) {
4670            throw new IllegalArgumentException();
4671        }
4672
4673        mFilters = filters;
4674
4675        if (mText instanceof Editable) {
4676            setFilters((Editable) mText, filters);
4677        }
4678    }
4679
4680    /**
4681     * Sets the list of input filters on the specified Editable,
4682     * and includes mInput in the list if it is an InputFilter.
4683     */
4684    private void setFilters(Editable e, InputFilter[] filters) {
4685        if (mEditor != null) {
4686            final boolean undoFilter = mEditor.mUndoInputFilter != null;
4687            final boolean keyFilter = mEditor.mKeyListener instanceof InputFilter;
4688            int num = 0;
4689            if (undoFilter) num++;
4690            if (keyFilter) num++;
4691            if (num > 0) {
4692                InputFilter[] nf = new InputFilter[filters.length + num];
4693
4694                System.arraycopy(filters, 0, nf, 0, filters.length);
4695                num = 0;
4696                if (undoFilter) {
4697                    nf[filters.length] = mEditor.mUndoInputFilter;
4698                    num++;
4699                }
4700                if (keyFilter) {
4701                    nf[filters.length + num] = (InputFilter) mEditor.mKeyListener;
4702                }
4703
4704                e.setFilters(nf);
4705                return;
4706            }
4707        }
4708        e.setFilters(filters);
4709    }
4710
4711    /**
4712     * Returns the current list of input filters.
4713     *
4714     * @attr ref android.R.styleable#TextView_maxLength
4715     */
4716    public InputFilter[] getFilters() {
4717        return mFilters;
4718    }
4719
4720    /////////////////////////////////////////////////////////////////////////
4721
4722    private int getBoxHeight(Layout l) {
4723        Insets opticalInsets = isLayoutModeOptical(mParent) ? getOpticalInsets() : Insets.NONE;
4724        int padding = (l == mHintLayout) ?
4725                getCompoundPaddingTop() + getCompoundPaddingBottom() :
4726                getExtendedPaddingTop() + getExtendedPaddingBottom();
4727        return getMeasuredHeight() - padding + opticalInsets.top + opticalInsets.bottom;
4728    }
4729
4730    int getVerticalOffset(boolean forceNormal) {
4731        int voffset = 0;
4732        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4733
4734        Layout l = mLayout;
4735        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4736            l = mHintLayout;
4737        }
4738
4739        if (gravity != Gravity.TOP) {
4740            int boxht = getBoxHeight(l);
4741            int textht = l.getHeight();
4742
4743            if (textht < boxht) {
4744                if (gravity == Gravity.BOTTOM)
4745                    voffset = boxht - textht;
4746                else // (gravity == Gravity.CENTER_VERTICAL)
4747                    voffset = (boxht - textht) >> 1;
4748            }
4749        }
4750        return voffset;
4751    }
4752
4753    private int getBottomVerticalOffset(boolean forceNormal) {
4754        int voffset = 0;
4755        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
4756
4757        Layout l = mLayout;
4758        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
4759            l = mHintLayout;
4760        }
4761
4762        if (gravity != Gravity.BOTTOM) {
4763            int boxht = getBoxHeight(l);
4764            int textht = l.getHeight();
4765
4766            if (textht < boxht) {
4767                if (gravity == Gravity.TOP)
4768                    voffset = boxht - textht;
4769                else // (gravity == Gravity.CENTER_VERTICAL)
4770                    voffset = (boxht - textht) >> 1;
4771            }
4772        }
4773        return voffset;
4774    }
4775
4776    void invalidateCursorPath() {
4777        if (mHighlightPathBogus) {
4778            invalidateCursor();
4779        } else {
4780            final int horizontalPadding = getCompoundPaddingLeft();
4781            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4782
4783            if (mEditor.mCursorCount == 0) {
4784                synchronized (TEMP_RECTF) {
4785                    /*
4786                     * The reason for this concern about the thickness of the
4787                     * cursor and doing the floor/ceil on the coordinates is that
4788                     * some EditTexts (notably textfields in the Browser) have
4789                     * anti-aliased text where not all the characters are
4790                     * necessarily at integer-multiple locations.  This should
4791                     * make sure the entire cursor gets invalidated instead of
4792                     * sometimes missing half a pixel.
4793                     */
4794                    float thick = (float) Math.ceil(mTextPaint.getStrokeWidth());
4795                    if (thick < 1.0f) {
4796                        thick = 1.0f;
4797                    }
4798
4799                    thick /= 2.0f;
4800
4801                    // mHighlightPath is guaranteed to be non null at that point.
4802                    mHighlightPath.computeBounds(TEMP_RECTF, false);
4803
4804                    invalidate((int) Math.floor(horizontalPadding + TEMP_RECTF.left - thick),
4805                            (int) Math.floor(verticalPadding + TEMP_RECTF.top - thick),
4806                            (int) Math.ceil(horizontalPadding + TEMP_RECTF.right + thick),
4807                            (int) Math.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
4808                }
4809            } else {
4810                for (int i = 0; i < mEditor.mCursorCount; i++) {
4811                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4812                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
4813                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
4814                }
4815            }
4816        }
4817    }
4818
4819    void invalidateCursor() {
4820        int where = getSelectionEnd();
4821
4822        invalidateCursor(where, where, where);
4823    }
4824
4825    private void invalidateCursor(int a, int b, int c) {
4826        if (a >= 0 || b >= 0 || c >= 0) {
4827            int start = Math.min(Math.min(a, b), c);
4828            int end = Math.max(Math.max(a, b), c);
4829            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
4830        }
4831    }
4832
4833    /**
4834     * Invalidates the region of text enclosed between the start and end text offsets.
4835     */
4836    void invalidateRegion(int start, int end, boolean invalidateCursor) {
4837        if (mLayout == null) {
4838            invalidate();
4839        } else {
4840                int lineStart = mLayout.getLineForOffset(start);
4841                int top = mLayout.getLineTop(lineStart);
4842
4843                // This is ridiculous, but the descent from the line above
4844                // can hang down into the line we really want to redraw,
4845                // so we have to invalidate part of the line above to make
4846                // sure everything that needs to be redrawn really is.
4847                // (But not the whole line above, because that would cause
4848                // the same problem with the descenders on the line above it!)
4849                if (lineStart > 0) {
4850                    top -= mLayout.getLineDescent(lineStart - 1);
4851                }
4852
4853                int lineEnd;
4854
4855                if (start == end)
4856                    lineEnd = lineStart;
4857                else
4858                    lineEnd = mLayout.getLineForOffset(end);
4859
4860                int bottom = mLayout.getLineBottom(lineEnd);
4861
4862                // mEditor can be null in case selection is set programmatically.
4863                if (invalidateCursor && mEditor != null) {
4864                    for (int i = 0; i < mEditor.mCursorCount; i++) {
4865                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
4866                        top = Math.min(top, bounds.top);
4867                        bottom = Math.max(bottom, bounds.bottom);
4868                    }
4869                }
4870
4871                final int compoundPaddingLeft = getCompoundPaddingLeft();
4872                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
4873
4874                int left, right;
4875                if (lineStart == lineEnd && !invalidateCursor) {
4876                    left = (int) mLayout.getPrimaryHorizontal(start);
4877                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
4878                    left += compoundPaddingLeft;
4879                    right += compoundPaddingLeft;
4880                } else {
4881                    // Rectangle bounding box when the region spans several lines
4882                    left = compoundPaddingLeft;
4883                    right = getWidth() - getCompoundPaddingRight();
4884                }
4885
4886                invalidate(mScrollX + left, verticalPadding + top,
4887                        mScrollX + right, verticalPadding + bottom);
4888        }
4889    }
4890
4891    private void registerForPreDraw() {
4892        if (!mPreDrawRegistered) {
4893            getViewTreeObserver().addOnPreDrawListener(this);
4894            mPreDrawRegistered = true;
4895        }
4896    }
4897
4898    private void unregisterForPreDraw() {
4899        getViewTreeObserver().removeOnPreDrawListener(this);
4900        mPreDrawRegistered = false;
4901        mPreDrawListenerDetached = false;
4902    }
4903
4904    /**
4905     * {@inheritDoc}
4906     */
4907    public boolean onPreDraw() {
4908        if (mLayout == null) {
4909            assumeLayout();
4910        }
4911
4912        if (mMovement != null) {
4913            /* This code also provides auto-scrolling when a cursor is moved using a
4914             * CursorController (insertion point or selection limits).
4915             * For selection, ensure start or end is visible depending on controller's state.
4916             */
4917            int curs = getSelectionEnd();
4918            // Do not create the controller if it is not already created.
4919            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
4920                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
4921                curs = getSelectionStart();
4922            }
4923
4924            /*
4925             * TODO: This should really only keep the end in view if
4926             * it already was before the text changed.  I'm not sure
4927             * of a good way to tell from here if it was.
4928             */
4929            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
4930                curs = mText.length();
4931            }
4932
4933            if (curs >= 0) {
4934                bringPointIntoView(curs);
4935            }
4936        } else {
4937            bringTextIntoView();
4938        }
4939
4940        // This has to be checked here since:
4941        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
4942        //   a screen rotation) since layout is not yet initialized at that point.
4943        if (mEditor != null && mEditor.mCreatedWithASelection) {
4944            mEditor.startSelectionActionMode();
4945            mEditor.mCreatedWithASelection = false;
4946        }
4947
4948        // Phone specific code (there is no ExtractEditText on tablets).
4949        // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can
4950        // not be set. Do the test here instead.
4951        if (this instanceof ExtractEditText && hasSelection() && mEditor != null) {
4952            mEditor.startSelectionActionMode();
4953        }
4954
4955        unregisterForPreDraw();
4956
4957        return true;
4958    }
4959
4960    @Override
4961    protected void onAttachedToWindow() {
4962        super.onAttachedToWindow();
4963
4964        mTemporaryDetach = false;
4965
4966        if (mEditor != null) mEditor.onAttachedToWindow();
4967
4968        if (mPreDrawListenerDetached) {
4969            getViewTreeObserver().addOnPreDrawListener(this);
4970            mPreDrawListenerDetached = false;
4971        }
4972    }
4973
4974    /** @hide */
4975    @Override
4976    protected void onDetachedFromWindowInternal() {
4977        if (mPreDrawRegistered) {
4978            getViewTreeObserver().removeOnPreDrawListener(this);
4979            mPreDrawListenerDetached = true;
4980        }
4981
4982        resetResolvedDrawables();
4983
4984        if (mEditor != null) mEditor.onDetachedFromWindow();
4985
4986        super.onDetachedFromWindowInternal();
4987    }
4988
4989    @Override
4990    public void onScreenStateChanged(int screenState) {
4991        super.onScreenStateChanged(screenState);
4992        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
4993    }
4994
4995    @Override
4996    protected boolean isPaddingOffsetRequired() {
4997        return mShadowRadius != 0 || mDrawables != null;
4998    }
4999
5000    @Override
5001    protected int getLeftPaddingOffset() {
5002        return getCompoundPaddingLeft() - mPaddingLeft +
5003                (int) Math.min(0, mShadowDx - mShadowRadius);
5004    }
5005
5006    @Override
5007    protected int getTopPaddingOffset() {
5008        return (int) Math.min(0, mShadowDy - mShadowRadius);
5009    }
5010
5011    @Override
5012    protected int getBottomPaddingOffset() {
5013        return (int) Math.max(0, mShadowDy + mShadowRadius);
5014    }
5015
5016    @Override
5017    protected int getRightPaddingOffset() {
5018        return -(getCompoundPaddingRight() - mPaddingRight) +
5019                (int) Math.max(0, mShadowDx + mShadowRadius);
5020    }
5021
5022    @Override
5023    protected boolean verifyDrawable(Drawable who) {
5024        final boolean verified = super.verifyDrawable(who);
5025        if (!verified && mDrawables != null) {
5026            return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop ||
5027                    who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom ||
5028                    who == mDrawables.mDrawableStart || who == mDrawables.mDrawableEnd;
5029        }
5030        return verified;
5031    }
5032
5033    @Override
5034    public void jumpDrawablesToCurrentState() {
5035        super.jumpDrawablesToCurrentState();
5036        if (mDrawables != null) {
5037            if (mDrawables.mDrawableLeft != null) {
5038                mDrawables.mDrawableLeft.jumpToCurrentState();
5039            }
5040            if (mDrawables.mDrawableTop != null) {
5041                mDrawables.mDrawableTop.jumpToCurrentState();
5042            }
5043            if (mDrawables.mDrawableRight != null) {
5044                mDrawables.mDrawableRight.jumpToCurrentState();
5045            }
5046            if (mDrawables.mDrawableBottom != null) {
5047                mDrawables.mDrawableBottom.jumpToCurrentState();
5048            }
5049            if (mDrawables.mDrawableStart != null) {
5050                mDrawables.mDrawableStart.jumpToCurrentState();
5051            }
5052            if (mDrawables.mDrawableEnd != null) {
5053                mDrawables.mDrawableEnd.jumpToCurrentState();
5054            }
5055        }
5056    }
5057
5058    @Override
5059    public void invalidateDrawable(Drawable drawable) {
5060        boolean handled = false;
5061
5062        if (verifyDrawable(drawable)) {
5063            final Rect dirty = drawable.getBounds();
5064            int scrollX = mScrollX;
5065            int scrollY = mScrollY;
5066
5067            // IMPORTANT: The coordinates below are based on the coordinates computed
5068            // for each compound drawable in onDraw(). Make sure to update each section
5069            // accordingly.
5070            final TextView.Drawables drawables = mDrawables;
5071            if (drawables != null) {
5072                if (drawable == drawables.mDrawableLeft) {
5073                    final int compoundPaddingTop = getCompoundPaddingTop();
5074                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5075                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5076
5077                    scrollX += mPaddingLeft;
5078                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
5079                    handled = true;
5080                } else if (drawable == drawables.mDrawableRight) {
5081                    final int compoundPaddingTop = getCompoundPaddingTop();
5082                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5083                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5084
5085                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
5086                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
5087                    handled = true;
5088                } else if (drawable == drawables.mDrawableTop) {
5089                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5090                    final int compoundPaddingRight = getCompoundPaddingRight();
5091                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5092
5093                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
5094                    scrollY += mPaddingTop;
5095                    handled = true;
5096                } else if (drawable == drawables.mDrawableBottom) {
5097                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5098                    final int compoundPaddingRight = getCompoundPaddingRight();
5099                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5100
5101                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
5102                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
5103                    handled = true;
5104                }
5105            }
5106
5107            if (handled) {
5108                invalidate(dirty.left + scrollX, dirty.top + scrollY,
5109                        dirty.right + scrollX, dirty.bottom + scrollY);
5110            }
5111        }
5112
5113        if (!handled) {
5114            super.invalidateDrawable(drawable);
5115        }
5116    }
5117
5118    @Override
5119    public boolean hasOverlappingRendering() {
5120        // horizontal fading edge causes SaveLayerAlpha, which doesn't support alpha modulation
5121        return ((getBackground() != null && getBackground().getCurrent() != null)
5122                || mText instanceof Spannable || hasSelection()
5123                || isHorizontalFadingEdgeEnabled());
5124    }
5125
5126    /**
5127     *
5128     * Returns the state of the {@code textIsSelectable} flag (See
5129     * {@link #setTextIsSelectable setTextIsSelectable()}). Although you have to set this flag
5130     * to allow users to select and copy text in a non-editable TextView, the content of an
5131     * {@link EditText} can always be selected, independently of the value of this flag.
5132     * <p>
5133     *
5134     * @return True if the text displayed in this TextView can be selected by the user.
5135     *
5136     * @attr ref android.R.styleable#TextView_textIsSelectable
5137     */
5138    public boolean isTextSelectable() {
5139        return mEditor == null ? false : mEditor.mTextIsSelectable;
5140    }
5141
5142    /**
5143     * Sets whether the content of this view is selectable by the user. The default is
5144     * {@code false}, meaning that the content is not selectable.
5145     * <p>
5146     * When you use a TextView to display a useful piece of information to the user (such as a
5147     * contact's address), make it selectable, so that the user can select and copy its
5148     * content. You can also use set the XML attribute
5149     * {@link android.R.styleable#TextView_textIsSelectable} to "true".
5150     * <p>
5151     * When you call this method to set the value of {@code textIsSelectable}, it sets
5152     * the flags {@code focusable}, {@code focusableInTouchMode}, {@code clickable},
5153     * and {@code longClickable} to the same value. These flags correspond to the attributes
5154     * {@link android.R.styleable#View_focusable android:focusable},
5155     * {@link android.R.styleable#View_focusableInTouchMode android:focusableInTouchMode},
5156     * {@link android.R.styleable#View_clickable android:clickable}, and
5157     * {@link android.R.styleable#View_longClickable android:longClickable}. To restore any of these
5158     * flags to a state you had set previously, call one or more of the following methods:
5159     * {@link #setFocusable(boolean) setFocusable()},
5160     * {@link #setFocusableInTouchMode(boolean) setFocusableInTouchMode()},
5161     * {@link #setClickable(boolean) setClickable()} or
5162     * {@link #setLongClickable(boolean) setLongClickable()}.
5163     *
5164     * @param selectable Whether the content of this TextView should be selectable.
5165     */
5166    public void setTextIsSelectable(boolean selectable) {
5167        if (!selectable && mEditor == null) return; // false is default value with no edit data
5168
5169        createEditorIfNeeded();
5170        if (mEditor.mTextIsSelectable == selectable) return;
5171
5172        mEditor.mTextIsSelectable = selectable;
5173        setFocusableInTouchMode(selectable);
5174        setFocusable(selectable);
5175        setClickable(selectable);
5176        setLongClickable(selectable);
5177
5178        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
5179
5180        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
5181        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
5182
5183        // Called by setText above, but safer in case of future code changes
5184        mEditor.prepareCursorControllers();
5185    }
5186
5187    @Override
5188    protected int[] onCreateDrawableState(int extraSpace) {
5189        final int[] drawableState;
5190
5191        if (mSingleLine) {
5192            drawableState = super.onCreateDrawableState(extraSpace);
5193        } else {
5194            drawableState = super.onCreateDrawableState(extraSpace + 1);
5195            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
5196        }
5197
5198        if (isTextSelectable()) {
5199            // Disable pressed state, which was introduced when TextView was made clickable.
5200            // Prevents text color change.
5201            // setClickable(false) would have a similar effect, but it also disables focus changes
5202            // and long press actions, which are both needed by text selection.
5203            final int length = drawableState.length;
5204            for (int i = 0; i < length; i++) {
5205                if (drawableState[i] == R.attr.state_pressed) {
5206                    final int[] nonPressedState = new int[length - 1];
5207                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
5208                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
5209                    return nonPressedState;
5210                }
5211            }
5212        }
5213
5214        return drawableState;
5215    }
5216
5217    private Path getUpdatedHighlightPath() {
5218        Path highlight = null;
5219        Paint highlightPaint = mHighlightPaint;
5220
5221        final int selStart = getSelectionStart();
5222        final int selEnd = getSelectionEnd();
5223        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
5224            if (selStart == selEnd) {
5225                if (mEditor != null && mEditor.isCursorVisible() &&
5226                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
5227                        (2 * Editor.BLINK) < Editor.BLINK) {
5228                    if (mHighlightPathBogus) {
5229                        if (mHighlightPath == null) mHighlightPath = new Path();
5230                        mHighlightPath.reset();
5231                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
5232                        mEditor.updateCursorsPositions();
5233                        mHighlightPathBogus = false;
5234                    }
5235
5236                    // XXX should pass to skin instead of drawing directly
5237                    highlightPaint.setColor(mCurTextColor);
5238                    highlightPaint.setStyle(Paint.Style.STROKE);
5239                    highlight = mHighlightPath;
5240                }
5241            } else {
5242                if (mHighlightPathBogus) {
5243                    if (mHighlightPath == null) mHighlightPath = new Path();
5244                    mHighlightPath.reset();
5245                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5246                    mHighlightPathBogus = false;
5247                }
5248
5249                // XXX should pass to skin instead of drawing directly
5250                highlightPaint.setColor(mHighlightColor);
5251                highlightPaint.setStyle(Paint.Style.FILL);
5252
5253                highlight = mHighlightPath;
5254            }
5255        }
5256        return highlight;
5257    }
5258
5259    /**
5260     * @hide
5261     */
5262    public int getHorizontalOffsetForDrawables() {
5263        return 0;
5264    }
5265
5266    @Override
5267    protected void onDraw(Canvas canvas) {
5268        restartMarqueeIfNeeded();
5269
5270        // Draw the background for this view
5271        super.onDraw(canvas);
5272
5273        final int compoundPaddingLeft = getCompoundPaddingLeft();
5274        final int compoundPaddingTop = getCompoundPaddingTop();
5275        final int compoundPaddingRight = getCompoundPaddingRight();
5276        final int compoundPaddingBottom = getCompoundPaddingBottom();
5277        final int scrollX = mScrollX;
5278        final int scrollY = mScrollY;
5279        final int right = mRight;
5280        final int left = mLeft;
5281        final int bottom = mBottom;
5282        final int top = mTop;
5283        final boolean isLayoutRtl = isLayoutRtl();
5284        final int offset = getHorizontalOffsetForDrawables();
5285        final int leftOffset = isLayoutRtl ? 0 : offset;
5286        final int rightOffset = isLayoutRtl ? offset : 0 ;
5287
5288        final Drawables dr = mDrawables;
5289        if (dr != null) {
5290            /*
5291             * Compound, not extended, because the icon is not clipped
5292             * if the text height is smaller.
5293             */
5294
5295            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
5296            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
5297
5298            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5299            // Make sure to update invalidateDrawable() when changing this code.
5300            if (dr.mDrawableLeft != null) {
5301                canvas.save();
5302                canvas.translate(scrollX + mPaddingLeft + leftOffset,
5303                                 scrollY + compoundPaddingTop +
5304                                 (vspace - dr.mDrawableHeightLeft) / 2);
5305                dr.mDrawableLeft.draw(canvas);
5306                canvas.restore();
5307            }
5308
5309            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5310            // Make sure to update invalidateDrawable() when changing this code.
5311            if (dr.mDrawableRight != null) {
5312                canvas.save();
5313                canvas.translate(scrollX + right - left - mPaddingRight
5314                        - dr.mDrawableSizeRight - rightOffset,
5315                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
5316                dr.mDrawableRight.draw(canvas);
5317                canvas.restore();
5318            }
5319
5320            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5321            // Make sure to update invalidateDrawable() when changing this code.
5322            if (dr.mDrawableTop != null) {
5323                canvas.save();
5324                canvas.translate(scrollX + compoundPaddingLeft +
5325                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
5326                dr.mDrawableTop.draw(canvas);
5327                canvas.restore();
5328            }
5329
5330            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5331            // Make sure to update invalidateDrawable() when changing this code.
5332            if (dr.mDrawableBottom != null) {
5333                canvas.save();
5334                canvas.translate(scrollX + compoundPaddingLeft +
5335                        (hspace - dr.mDrawableWidthBottom) / 2,
5336                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
5337                dr.mDrawableBottom.draw(canvas);
5338                canvas.restore();
5339            }
5340        }
5341
5342        int color = mCurTextColor;
5343
5344        if (mLayout == null) {
5345            assumeLayout();
5346        }
5347
5348        Layout layout = mLayout;
5349
5350        if (mHint != null && mText.length() == 0) {
5351            if (mHintTextColor != null) {
5352                color = mCurHintTextColor;
5353            }
5354
5355            layout = mHintLayout;
5356        }
5357
5358        mTextPaint.setColor(color);
5359        mTextPaint.drawableState = getDrawableState();
5360
5361        canvas.save();
5362        /*  Would be faster if we didn't have to do this. Can we chop the
5363            (displayable) text so that we don't need to do this ever?
5364        */
5365
5366        int extendedPaddingTop = getExtendedPaddingTop();
5367        int extendedPaddingBottom = getExtendedPaddingBottom();
5368
5369        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5370        final int maxScrollY = mLayout.getHeight() - vspace;
5371
5372        float clipLeft = compoundPaddingLeft + scrollX;
5373        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
5374        float clipRight = right - left - compoundPaddingRight + scrollX;
5375        float clipBottom = bottom - top + scrollY -
5376                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
5377
5378        if (mShadowRadius != 0) {
5379            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
5380            clipRight += Math.max(0, mShadowDx + mShadowRadius);
5381
5382            clipTop += Math.min(0, mShadowDy - mShadowRadius);
5383            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
5384        }
5385
5386        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
5387
5388        int voffsetText = 0;
5389        int voffsetCursor = 0;
5390
5391        // translate in by our padding
5392        /* shortcircuit calling getVerticaOffset() */
5393        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5394            voffsetText = getVerticalOffset(false);
5395            voffsetCursor = getVerticalOffset(true);
5396        }
5397        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
5398
5399        final int layoutDirection = getLayoutDirection();
5400        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
5401        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
5402                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5403            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
5404                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
5405                final int width = mRight - mLeft;
5406                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
5407                final float dx = mLayout.getLineRight(0) - (width - padding);
5408                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5409            }
5410
5411            if (mMarquee != null && mMarquee.isRunning()) {
5412                final float dx = -mMarquee.getScroll();
5413                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5414            }
5415        }
5416
5417        final int cursorOffsetVertical = voffsetCursor - voffsetText;
5418
5419        Path highlight = getUpdatedHighlightPath();
5420        if (mEditor != null) {
5421            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
5422        } else {
5423            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5424        }
5425
5426        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
5427            final float dx = mMarquee.getGhostOffset();
5428            canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5429            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5430        }
5431
5432        canvas.restore();
5433    }
5434
5435    @Override
5436    public void getFocusedRect(Rect r) {
5437        if (mLayout == null) {
5438            super.getFocusedRect(r);
5439            return;
5440        }
5441
5442        int selEnd = getSelectionEnd();
5443        if (selEnd < 0) {
5444            super.getFocusedRect(r);
5445            return;
5446        }
5447
5448        int selStart = getSelectionStart();
5449        if (selStart < 0 || selStart >= selEnd) {
5450            int line = mLayout.getLineForOffset(selEnd);
5451            r.top = mLayout.getLineTop(line);
5452            r.bottom = mLayout.getLineBottom(line);
5453            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
5454            r.right = r.left + 4;
5455        } else {
5456            int lineStart = mLayout.getLineForOffset(selStart);
5457            int lineEnd = mLayout.getLineForOffset(selEnd);
5458            r.top = mLayout.getLineTop(lineStart);
5459            r.bottom = mLayout.getLineBottom(lineEnd);
5460            if (lineStart == lineEnd) {
5461                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
5462                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
5463            } else {
5464                // Selection extends across multiple lines -- make the focused
5465                // rect cover the entire width.
5466                if (mHighlightPathBogus) {
5467                    if (mHighlightPath == null) mHighlightPath = new Path();
5468                    mHighlightPath.reset();
5469                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5470                    mHighlightPathBogus = false;
5471                }
5472                synchronized (TEMP_RECTF) {
5473                    mHighlightPath.computeBounds(TEMP_RECTF, true);
5474                    r.left = (int)TEMP_RECTF.left-1;
5475                    r.right = (int)TEMP_RECTF.right+1;
5476                }
5477            }
5478        }
5479
5480        // Adjust for padding and gravity.
5481        int paddingLeft = getCompoundPaddingLeft();
5482        int paddingTop = getExtendedPaddingTop();
5483        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5484            paddingTop += getVerticalOffset(false);
5485        }
5486        r.offset(paddingLeft, paddingTop);
5487        int paddingBottom = getExtendedPaddingBottom();
5488        r.bottom += paddingBottom;
5489    }
5490
5491    /**
5492     * Return the number of lines of text, or 0 if the internal Layout has not
5493     * been built.
5494     */
5495    public int getLineCount() {
5496        return mLayout != null ? mLayout.getLineCount() : 0;
5497    }
5498
5499    /**
5500     * Return the baseline for the specified line (0...getLineCount() - 1)
5501     * If bounds is not null, return the top, left, right, bottom extents
5502     * of the specified line in it. If the internal Layout has not been built,
5503     * return 0 and set bounds to (0, 0, 0, 0)
5504     * @param line which line to examine (0..getLineCount() - 1)
5505     * @param bounds Optional. If not null, it returns the extent of the line
5506     * @return the Y-coordinate of the baseline
5507     */
5508    public int getLineBounds(int line, Rect bounds) {
5509        if (mLayout == null) {
5510            if (bounds != null) {
5511                bounds.set(0, 0, 0, 0);
5512            }
5513            return 0;
5514        }
5515        else {
5516            int baseline = mLayout.getLineBounds(line, bounds);
5517
5518            int voffset = getExtendedPaddingTop();
5519            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5520                voffset += getVerticalOffset(true);
5521            }
5522            if (bounds != null) {
5523                bounds.offset(getCompoundPaddingLeft(), voffset);
5524            }
5525            return baseline + voffset;
5526        }
5527    }
5528
5529    @Override
5530    public int getBaseline() {
5531        if (mLayout == null) {
5532            return super.getBaseline();
5533        }
5534
5535        int voffset = 0;
5536        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5537            voffset = getVerticalOffset(true);
5538        }
5539
5540        if (isLayoutModeOptical(mParent)) {
5541            voffset -= getOpticalInsets().top;
5542        }
5543
5544        return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0);
5545    }
5546
5547    /**
5548     * @hide
5549     */
5550    @Override
5551    protected int getFadeTop(boolean offsetRequired) {
5552        if (mLayout == null) return 0;
5553
5554        int voffset = 0;
5555        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5556            voffset = getVerticalOffset(true);
5557        }
5558
5559        if (offsetRequired) voffset += getTopPaddingOffset();
5560
5561        return getExtendedPaddingTop() + voffset;
5562    }
5563
5564    /**
5565     * @hide
5566     */
5567    @Override
5568    protected int getFadeHeight(boolean offsetRequired) {
5569        return mLayout != null ? mLayout.getHeight() : 0;
5570    }
5571
5572    @Override
5573    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
5574        if (keyCode == KeyEvent.KEYCODE_BACK) {
5575            boolean isInSelectionMode = mEditor != null && mEditor.mSelectionActionMode != null;
5576
5577            if (isInSelectionMode) {
5578                if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
5579                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5580                    if (state != null) {
5581                        state.startTracking(event, this);
5582                    }
5583                    return true;
5584                } else if (event.getAction() == KeyEvent.ACTION_UP) {
5585                    KeyEvent.DispatcherState state = getKeyDispatcherState();
5586                    if (state != null) {
5587                        state.handleUpEvent(event);
5588                    }
5589                    if (event.isTracking() && !event.isCanceled()) {
5590                        stopSelectionActionMode();
5591                        return true;
5592                    }
5593                }
5594            }
5595        }
5596        return super.onKeyPreIme(keyCode, event);
5597    }
5598
5599    @Override
5600    public boolean onKeyDown(int keyCode, KeyEvent event) {
5601        int which = doKeyDown(keyCode, event, null);
5602        if (which == 0) {
5603            return super.onKeyDown(keyCode, event);
5604        }
5605
5606        return true;
5607    }
5608
5609    @Override
5610    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
5611        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
5612
5613        int which = doKeyDown(keyCode, down, event);
5614        if (which == 0) {
5615            // Go through default dispatching.
5616            return super.onKeyMultiple(keyCode, repeatCount, event);
5617        }
5618        if (which == -1) {
5619            // Consumed the whole thing.
5620            return true;
5621        }
5622
5623        repeatCount--;
5624
5625        // We are going to dispatch the remaining events to either the input
5626        // or movement method.  To do this, we will just send a repeated stream
5627        // of down and up events until we have done the complete repeatCount.
5628        // It would be nice if those interfaces had an onKeyMultiple() method,
5629        // but adding that is a more complicated change.
5630        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
5631        if (which == 1) {
5632            // mEditor and mEditor.mInput are not null from doKeyDown
5633            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5634            while (--repeatCount > 0) {
5635                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
5636                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
5637            }
5638            hideErrorIfUnchanged();
5639
5640        } else if (which == 2) {
5641            // mMovement is not null from doKeyDown
5642            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5643            while (--repeatCount > 0) {
5644                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
5645                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
5646            }
5647        }
5648
5649        return true;
5650    }
5651
5652    /**
5653     * Returns true if pressing ENTER in this field advances focus instead
5654     * of inserting the character.  This is true mostly in single-line fields,
5655     * but also in mail addresses and subjects which will display on multiple
5656     * lines but where it doesn't make sense to insert newlines.
5657     */
5658    private boolean shouldAdvanceFocusOnEnter() {
5659        if (getKeyListener() == null) {
5660            return false;
5661        }
5662
5663        if (mSingleLine) {
5664            return true;
5665        }
5666
5667        if (mEditor != null &&
5668                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5669            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5670            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
5671                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
5672                return true;
5673            }
5674        }
5675
5676        return false;
5677    }
5678
5679    /**
5680     * Returns true if pressing TAB in this field advances focus instead
5681     * of inserting the character.  Insert tabs only in multi-line editors.
5682     */
5683    private boolean shouldAdvanceFocusOnTab() {
5684        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
5685                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
5686            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
5687            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
5688                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
5689                return false;
5690            }
5691        }
5692        return true;
5693    }
5694
5695    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
5696        if (!isEnabled()) {
5697            return 0;
5698        }
5699
5700        // If this is the initial keydown, we don't want to prevent a movement away from this view.
5701        // While this shouldn't be necessary because any time we're preventing default movement we
5702        // should be restricting the focus to remain within this view, thus we'll also receive
5703        // the key up event, occasionally key up events will get dropped and we don't want to
5704        // prevent the user from traversing out of this on the next key down.
5705        if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
5706            mPreventDefaultMovement = false;
5707        }
5708
5709        switch (keyCode) {
5710            case KeyEvent.KEYCODE_ENTER:
5711                if (event.hasNoModifiers()) {
5712                    // When mInputContentType is set, we know that we are
5713                    // running in a "modern" cupcake environment, so don't need
5714                    // to worry about the application trying to capture
5715                    // enter key events.
5716                    if (mEditor != null && mEditor.mInputContentType != null) {
5717                        // If there is an action listener, given them a
5718                        // chance to consume the event.
5719                        if (mEditor.mInputContentType.onEditorActionListener != null &&
5720                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5721                                this, EditorInfo.IME_NULL, event)) {
5722                            mEditor.mInputContentType.enterDown = true;
5723                            // We are consuming the enter key for them.
5724                            return -1;
5725                        }
5726                    }
5727
5728                    // If our editor should move focus when enter is pressed, or
5729                    // this is a generated event from an IME action button, then
5730                    // don't let it be inserted into the text.
5731                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5732                            || shouldAdvanceFocusOnEnter()) {
5733                        if (hasOnClickListeners()) {
5734                            return 0;
5735                        }
5736                        return -1;
5737                    }
5738                }
5739                break;
5740
5741            case KeyEvent.KEYCODE_DPAD_CENTER:
5742                if (event.hasNoModifiers()) {
5743                    if (shouldAdvanceFocusOnEnter()) {
5744                        return 0;
5745                    }
5746                }
5747                break;
5748
5749            case KeyEvent.KEYCODE_TAB:
5750                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
5751                    if (shouldAdvanceFocusOnTab()) {
5752                        return 0;
5753                    }
5754                }
5755                break;
5756
5757                // Has to be done on key down (and not on key up) to correctly be intercepted.
5758            case KeyEvent.KEYCODE_BACK:
5759                if (mEditor != null && mEditor.mSelectionActionMode != null) {
5760                    stopSelectionActionMode();
5761                    return -1;
5762                }
5763                break;
5764        }
5765
5766        if (mEditor != null && mEditor.mKeyListener != null) {
5767            boolean doDown = true;
5768            if (otherEvent != null) {
5769                try {
5770                    beginBatchEdit();
5771                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
5772                            otherEvent);
5773                    hideErrorIfUnchanged();
5774                    doDown = false;
5775                    if (handled) {
5776                        return -1;
5777                    }
5778                } catch (AbstractMethodError e) {
5779                    // onKeyOther was added after 1.0, so if it isn't
5780                    // implemented we need to try to dispatch as a regular down.
5781                } finally {
5782                    endBatchEdit();
5783                }
5784            }
5785
5786            if (doDown) {
5787                beginBatchEdit();
5788                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
5789                        keyCode, event);
5790                endBatchEdit();
5791                hideErrorIfUnchanged();
5792                if (handled) return 1;
5793            }
5794        }
5795
5796        // bug 650865: sometimes we get a key event before a layout.
5797        // don't try to move around if we don't know the layout.
5798
5799        if (mMovement != null && mLayout != null) {
5800            boolean doDown = true;
5801            if (otherEvent != null) {
5802                try {
5803                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
5804                            otherEvent);
5805                    doDown = false;
5806                    if (handled) {
5807                        return -1;
5808                    }
5809                } catch (AbstractMethodError e) {
5810                    // onKeyOther was added after 1.0, so if it isn't
5811                    // implemented we need to try to dispatch as a regular down.
5812                }
5813            }
5814            if (doDown) {
5815                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event)) {
5816                    if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
5817                        mPreventDefaultMovement = true;
5818                    }
5819                    return 2;
5820                }
5821            }
5822        }
5823
5824        return mPreventDefaultMovement && !KeyEvent.isModifierKey(keyCode) ? -1 : 0;
5825    }
5826
5827    /**
5828     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
5829     * can be recorded.
5830     * @hide
5831     */
5832    public void resetErrorChangedFlag() {
5833        /*
5834         * Keep track of what the error was before doing the input
5835         * so that if an input filter changed the error, we leave
5836         * that error showing.  Otherwise, we take down whatever
5837         * error was showing when the user types something.
5838         */
5839        if (mEditor != null) mEditor.mErrorWasChanged = false;
5840    }
5841
5842    /**
5843     * @hide
5844     */
5845    public void hideErrorIfUnchanged() {
5846        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
5847            setError(null, null);
5848        }
5849    }
5850
5851    @Override
5852    public boolean onKeyUp(int keyCode, KeyEvent event) {
5853        if (!isEnabled()) {
5854            return super.onKeyUp(keyCode, event);
5855        }
5856
5857        if (!KeyEvent.isModifierKey(keyCode)) {
5858            mPreventDefaultMovement = false;
5859        }
5860
5861        switch (keyCode) {
5862            case KeyEvent.KEYCODE_DPAD_CENTER:
5863                if (event.hasNoModifiers()) {
5864                    /*
5865                     * If there is a click listener, just call through to
5866                     * super, which will invoke it.
5867                     *
5868                     * If there isn't a click listener, try to show the soft
5869                     * input method.  (It will also
5870                     * call performClick(), but that won't do anything in
5871                     * this case.)
5872                     */
5873                    if (!hasOnClickListeners()) {
5874                        if (mMovement != null && mText instanceof Editable
5875                                && mLayout != null && onCheckIsTextEditor()) {
5876                            InputMethodManager imm = InputMethodManager.peekInstance();
5877                            viewClicked(imm);
5878                            if (imm != null && getShowSoftInputOnFocus()) {
5879                                imm.showSoftInput(this, 0);
5880                            }
5881                        }
5882                    }
5883                }
5884                return super.onKeyUp(keyCode, event);
5885
5886            case KeyEvent.KEYCODE_ENTER:
5887                if (event.hasNoModifiers()) {
5888                    if (mEditor != null && mEditor.mInputContentType != null
5889                            && mEditor.mInputContentType.onEditorActionListener != null
5890                            && mEditor.mInputContentType.enterDown) {
5891                        mEditor.mInputContentType.enterDown = false;
5892                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
5893                                this, EditorInfo.IME_NULL, event)) {
5894                            return true;
5895                        }
5896                    }
5897
5898                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
5899                            || shouldAdvanceFocusOnEnter()) {
5900                        /*
5901                         * If there is a click listener, just call through to
5902                         * super, which will invoke it.
5903                         *
5904                         * If there isn't a click listener, try to advance focus,
5905                         * but still call through to super, which will reset the
5906                         * pressed state and longpress state.  (It will also
5907                         * call performClick(), but that won't do anything in
5908                         * this case.)
5909                         */
5910                        if (!hasOnClickListeners()) {
5911                            View v = focusSearch(FOCUS_DOWN);
5912
5913                            if (v != null) {
5914                                if (!v.requestFocus(FOCUS_DOWN)) {
5915                                    throw new IllegalStateException(
5916                                            "focus search returned a view " +
5917                                            "that wasn't able to take focus!");
5918                                }
5919
5920                                /*
5921                                 * Return true because we handled the key; super
5922                                 * will return false because there was no click
5923                                 * listener.
5924                                 */
5925                                super.onKeyUp(keyCode, event);
5926                                return true;
5927                            } else if ((event.getFlags()
5928                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
5929                                // No target for next focus, but make sure the IME
5930                                // if this came from it.
5931                                InputMethodManager imm = InputMethodManager.peekInstance();
5932                                if (imm != null && imm.isActive(this)) {
5933                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
5934                                }
5935                            }
5936                        }
5937                    }
5938                    return super.onKeyUp(keyCode, event);
5939                }
5940                break;
5941        }
5942
5943        if (mEditor != null && mEditor.mKeyListener != null)
5944            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
5945                return true;
5946
5947        if (mMovement != null && mLayout != null)
5948            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
5949                return true;
5950
5951        return super.onKeyUp(keyCode, event);
5952    }
5953
5954    @Override
5955    public boolean onCheckIsTextEditor() {
5956        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
5957    }
5958
5959    @Override
5960    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
5961        if (onCheckIsTextEditor() && isEnabled()) {
5962            mEditor.createInputMethodStateIfNeeded();
5963            outAttrs.inputType = getInputType();
5964            if (mEditor.mInputContentType != null) {
5965                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
5966                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
5967                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
5968                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
5969                outAttrs.extras = mEditor.mInputContentType.extras;
5970            } else {
5971                outAttrs.imeOptions = EditorInfo.IME_NULL;
5972            }
5973            if (focusSearch(FOCUS_DOWN) != null) {
5974                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
5975            }
5976            if (focusSearch(FOCUS_UP) != null) {
5977                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
5978            }
5979            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
5980                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
5981                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
5982                    // An action has not been set, but the enter key will move to
5983                    // the next focus, so set the action to that.
5984                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
5985                } else {
5986                    // An action has not been set, and there is no focus to move
5987                    // to, so let's just supply a "done" action.
5988                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
5989                }
5990                if (!shouldAdvanceFocusOnEnter()) {
5991                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5992                }
5993            }
5994            if (isMultilineInputType(outAttrs.inputType)) {
5995                // Multi-line text editors should always show an enter key.
5996                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
5997            }
5998            outAttrs.hintText = mHint;
5999            if (mText instanceof Editable) {
6000                InputConnection ic = new EditableInputConnection(this);
6001                outAttrs.initialSelStart = getSelectionStart();
6002                outAttrs.initialSelEnd = getSelectionEnd();
6003                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
6004                return ic;
6005            }
6006        }
6007        return null;
6008    }
6009
6010    /**
6011     * If this TextView contains editable content, extract a portion of it
6012     * based on the information in <var>request</var> in to <var>outText</var>.
6013     * @return Returns true if the text was successfully extracted, else false.
6014     */
6015    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
6016        createEditorIfNeeded();
6017        return mEditor.extractText(request, outText);
6018    }
6019
6020    /**
6021     * This is used to remove all style-impacting spans from text before new
6022     * extracted text is being replaced into it, so that we don't have any
6023     * lingering spans applied during the replace.
6024     */
6025    static void removeParcelableSpans(Spannable spannable, int start, int end) {
6026        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
6027        int i = spans.length;
6028        while (i > 0) {
6029            i--;
6030            spannable.removeSpan(spans[i]);
6031        }
6032    }
6033
6034    /**
6035     * Apply to this text view the given extracted text, as previously
6036     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
6037     */
6038    public void setExtractedText(ExtractedText text) {
6039        Editable content = getEditableText();
6040        if (text.text != null) {
6041            if (content == null) {
6042                setText(text.text, TextView.BufferType.EDITABLE);
6043            } else if (text.partialStartOffset < 0) {
6044                removeParcelableSpans(content, 0, content.length());
6045                content.replace(0, content.length(), text.text);
6046            } else {
6047                final int N = content.length();
6048                int start = text.partialStartOffset;
6049                if (start > N) start = N;
6050                int end = text.partialEndOffset;
6051                if (end > N) end = N;
6052                removeParcelableSpans(content, start, end);
6053                content.replace(start, end, text.text);
6054            }
6055        }
6056
6057        // Now set the selection position...  make sure it is in range, to
6058        // avoid crashes.  If this is a partial update, it is possible that
6059        // the underlying text may have changed, causing us problems here.
6060        // Also we just don't want to trust clients to do the right thing.
6061        Spannable sp = (Spannable)getText();
6062        final int N = sp.length();
6063        int start = text.selectionStart;
6064        if (start < 0) start = 0;
6065        else if (start > N) start = N;
6066        int end = text.selectionEnd;
6067        if (end < 0) end = 0;
6068        else if (end > N) end = N;
6069        Selection.setSelection(sp, start, end);
6070
6071        // Finally, update the selection mode.
6072        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
6073            MetaKeyKeyListener.startSelecting(this, sp);
6074        } else {
6075            MetaKeyKeyListener.stopSelecting(this, sp);
6076        }
6077    }
6078
6079    /**
6080     * @hide
6081     */
6082    public void setExtracting(ExtractedTextRequest req) {
6083        if (mEditor.mInputMethodState != null) {
6084            mEditor.mInputMethodState.mExtractedTextRequest = req;
6085        }
6086        // This would stop a possible selection mode, but no such mode is started in case
6087        // extracted mode will start. Some text is selected though, and will trigger an action mode
6088        // in the extracted view.
6089        mEditor.hideControllers();
6090    }
6091
6092    /**
6093     * Called by the framework in response to a text completion from
6094     * the current input method, provided by it calling
6095     * {@link InputConnection#commitCompletion
6096     * InputConnection.commitCompletion()}.  The default implementation does
6097     * nothing; text views that are supporting auto-completion should override
6098     * this to do their desired behavior.
6099     *
6100     * @param text The auto complete text the user has selected.
6101     */
6102    public void onCommitCompletion(CompletionInfo text) {
6103        // intentionally empty
6104    }
6105
6106    /**
6107     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
6108     * a dictionnary) from the current input method, provided by it calling
6109     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
6110     * implementation flashes the background of the corrected word to provide feedback to the user.
6111     *
6112     * @param info The auto correct info about the text that was corrected.
6113     */
6114    public void onCommitCorrection(CorrectionInfo info) {
6115        if (mEditor != null) mEditor.onCommitCorrection(info);
6116    }
6117
6118    public void beginBatchEdit() {
6119        if (mEditor != null) mEditor.beginBatchEdit();
6120    }
6121
6122    public void endBatchEdit() {
6123        if (mEditor != null) mEditor.endBatchEdit();
6124    }
6125
6126    /**
6127     * Called by the framework in response to a request to begin a batch
6128     * of edit operations through a call to link {@link #beginBatchEdit()}.
6129     */
6130    public void onBeginBatchEdit() {
6131        // intentionally empty
6132    }
6133
6134    /**
6135     * Called by the framework in response to a request to end a batch
6136     * of edit operations through a call to link {@link #endBatchEdit}.
6137     */
6138    public void onEndBatchEdit() {
6139        // intentionally empty
6140    }
6141
6142    /**
6143     * Called by the framework in response to a private command from the
6144     * current method, provided by it calling
6145     * {@link InputConnection#performPrivateCommand
6146     * InputConnection.performPrivateCommand()}.
6147     *
6148     * @param action The action name of the command.
6149     * @param data Any additional data for the command.  This may be null.
6150     * @return Return true if you handled the command, else false.
6151     */
6152    public boolean onPrivateIMECommand(String action, Bundle data) {
6153        return false;
6154    }
6155
6156    private void nullLayouts() {
6157        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
6158            mSavedLayout = (BoringLayout) mLayout;
6159        }
6160        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
6161            mSavedHintLayout = (BoringLayout) mHintLayout;
6162        }
6163
6164        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
6165
6166        mBoring = mHintBoring = null;
6167
6168        // Since it depends on the value of mLayout
6169        if (mEditor != null) mEditor.prepareCursorControllers();
6170    }
6171
6172    /**
6173     * Make a new Layout based on the already-measured size of the view,
6174     * on the assumption that it was measured correctly at some point.
6175     */
6176    private void assumeLayout() {
6177        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6178
6179        if (width < 1) {
6180            width = 0;
6181        }
6182
6183        int physicalWidth = width;
6184
6185        if (mHorizontallyScrolling) {
6186            width = VERY_WIDE;
6187        }
6188
6189        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
6190                      physicalWidth, false);
6191    }
6192
6193    private Layout.Alignment getLayoutAlignment() {
6194        Layout.Alignment alignment;
6195        switch (getTextAlignment()) {
6196            case TEXT_ALIGNMENT_GRAVITY:
6197                switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
6198                    case Gravity.START:
6199                        alignment = Layout.Alignment.ALIGN_NORMAL;
6200                        break;
6201                    case Gravity.END:
6202                        alignment = Layout.Alignment.ALIGN_OPPOSITE;
6203                        break;
6204                    case Gravity.LEFT:
6205                        alignment = Layout.Alignment.ALIGN_LEFT;
6206                        break;
6207                    case Gravity.RIGHT:
6208                        alignment = Layout.Alignment.ALIGN_RIGHT;
6209                        break;
6210                    case Gravity.CENTER_HORIZONTAL:
6211                        alignment = Layout.Alignment.ALIGN_CENTER;
6212                        break;
6213                    default:
6214                        alignment = Layout.Alignment.ALIGN_NORMAL;
6215                        break;
6216                }
6217                break;
6218            case TEXT_ALIGNMENT_TEXT_START:
6219                alignment = Layout.Alignment.ALIGN_NORMAL;
6220                break;
6221            case TEXT_ALIGNMENT_TEXT_END:
6222                alignment = Layout.Alignment.ALIGN_OPPOSITE;
6223                break;
6224            case TEXT_ALIGNMENT_CENTER:
6225                alignment = Layout.Alignment.ALIGN_CENTER;
6226                break;
6227            case TEXT_ALIGNMENT_VIEW_START:
6228                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6229                        Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
6230                break;
6231            case TEXT_ALIGNMENT_VIEW_END:
6232                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6233                        Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
6234                break;
6235            case TEXT_ALIGNMENT_INHERIT:
6236                // This should never happen as we have already resolved the text alignment
6237                // but better safe than sorry so we just fall through
6238            default:
6239                alignment = Layout.Alignment.ALIGN_NORMAL;
6240                break;
6241        }
6242        return alignment;
6243    }
6244
6245    /**
6246     * The width passed in is now the desired layout width,
6247     * not the full view width with padding.
6248     * {@hide}
6249     */
6250    protected void makeNewLayout(int wantWidth, int hintWidth,
6251                                 BoringLayout.Metrics boring,
6252                                 BoringLayout.Metrics hintBoring,
6253                                 int ellipsisWidth, boolean bringIntoView) {
6254        stopMarquee();
6255
6256        // Update "old" cached values
6257        mOldMaximum = mMaximum;
6258        mOldMaxMode = mMaxMode;
6259
6260        mHighlightPathBogus = true;
6261
6262        if (wantWidth < 0) {
6263            wantWidth = 0;
6264        }
6265        if (hintWidth < 0) {
6266            hintWidth = 0;
6267        }
6268
6269        Layout.Alignment alignment = getLayoutAlignment();
6270        final boolean testDirChange = mSingleLine && mLayout != null &&
6271            (alignment == Layout.Alignment.ALIGN_NORMAL ||
6272             alignment == Layout.Alignment.ALIGN_OPPOSITE);
6273        int oldDir = 0;
6274        if (testDirChange) oldDir = mLayout.getParagraphDirection(0);
6275        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
6276        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
6277                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
6278        TruncateAt effectiveEllipsize = mEllipsize;
6279        if (mEllipsize == TruncateAt.MARQUEE &&
6280                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6281            effectiveEllipsize = TruncateAt.END_SMALL;
6282        }
6283
6284        if (mTextDir == null) {
6285            mTextDir = getTextDirectionHeuristic();
6286        }
6287
6288        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
6289                effectiveEllipsize, effectiveEllipsize == mEllipsize);
6290        if (switchEllipsize) {
6291            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
6292                    TruncateAt.END : TruncateAt.MARQUEE;
6293            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
6294                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
6295        }
6296
6297        shouldEllipsize = mEllipsize != null;
6298        mHintLayout = null;
6299
6300        if (mHint != null) {
6301            if (shouldEllipsize) hintWidth = wantWidth;
6302
6303            if (hintBoring == UNKNOWN_BORING) {
6304                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
6305                                                   mHintBoring);
6306                if (hintBoring != null) {
6307                    mHintBoring = hintBoring;
6308                }
6309            }
6310
6311            if (hintBoring != null) {
6312                if (hintBoring.width <= hintWidth &&
6313                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
6314                    if (mSavedHintLayout != null) {
6315                        mHintLayout = mSavedHintLayout.
6316                                replaceOrMake(mHint, mTextPaint,
6317                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6318                                hintBoring, mIncludePad);
6319                    } else {
6320                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6321                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6322                                hintBoring, mIncludePad);
6323                    }
6324
6325                    mSavedHintLayout = (BoringLayout) mHintLayout;
6326                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
6327                    if (mSavedHintLayout != null) {
6328                        mHintLayout = mSavedHintLayout.
6329                                replaceOrMake(mHint, mTextPaint,
6330                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6331                                hintBoring, mIncludePad, mEllipsize,
6332                                ellipsisWidth);
6333                    } else {
6334                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6335                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6336                                hintBoring, mIncludePad, mEllipsize,
6337                                ellipsisWidth);
6338                    }
6339                } else if (shouldEllipsize) {
6340                    mHintLayout = new StaticLayout(mHint,
6341                                0, mHint.length(),
6342                                mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
6343                                mSpacingAdd, mIncludePad, mEllipsize,
6344                                ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6345                } else {
6346                    mHintLayout = new StaticLayout(mHint, mTextPaint,
6347                            hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
6348                            mIncludePad);
6349                }
6350            } else if (shouldEllipsize) {
6351                mHintLayout = new StaticLayout(mHint,
6352                            0, mHint.length(),
6353                            mTextPaint, hintWidth, alignment, mTextDir, mSpacingMult,
6354                            mSpacingAdd, mIncludePad, mEllipsize,
6355                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6356            } else {
6357                mHintLayout = new StaticLayout(mHint, mTextPaint,
6358                        hintWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
6359                        mIncludePad);
6360            }
6361        }
6362
6363        if (bringIntoView || (testDirChange && oldDir != mLayout.getParagraphDirection(0))) {
6364            registerForPreDraw();
6365        }
6366
6367        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6368            if (!compressText(ellipsisWidth)) {
6369                final int height = mLayoutParams.height;
6370                // If the size of the view does not depend on the size of the text, try to
6371                // start the marquee immediately
6372                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
6373                    startMarquee();
6374                } else {
6375                    // Defer the start of the marquee until we know our width (see setFrame())
6376                    mRestartMarquee = true;
6377                }
6378            }
6379        }
6380
6381        // CursorControllers need a non-null mLayout
6382        if (mEditor != null) mEditor.prepareCursorControllers();
6383    }
6384
6385    private Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
6386            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
6387            boolean useSaved) {
6388        Layout result = null;
6389        if (mText instanceof Spannable) {
6390            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
6391                    alignment, mTextDir, mSpacingMult,
6392                    mSpacingAdd, mIncludePad, getKeyListener() == null ? effectiveEllipsize : null,
6393                            ellipsisWidth);
6394        } else {
6395            if (boring == UNKNOWN_BORING) {
6396                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6397                if (boring != null) {
6398                    mBoring = boring;
6399                }
6400            }
6401
6402            if (boring != null) {
6403                if (boring.width <= wantWidth &&
6404                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
6405                    if (useSaved && mSavedLayout != null) {
6406                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6407                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6408                                boring, mIncludePad);
6409                    } else {
6410                        result = BoringLayout.make(mTransformed, mTextPaint,
6411                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6412                                boring, mIncludePad);
6413                    }
6414
6415                    if (useSaved) {
6416                        mSavedLayout = (BoringLayout) result;
6417                    }
6418                } else if (shouldEllipsize && boring.width <= wantWidth) {
6419                    if (useSaved && mSavedLayout != null) {
6420                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6421                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6422                                boring, mIncludePad, effectiveEllipsize,
6423                                ellipsisWidth);
6424                    } else {
6425                        result = BoringLayout.make(mTransformed, mTextPaint,
6426                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6427                                boring, mIncludePad, effectiveEllipsize,
6428                                ellipsisWidth);
6429                    }
6430                } else if (shouldEllipsize) {
6431                    result = new StaticLayout(mTransformed,
6432                            0, mTransformed.length(),
6433                            mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
6434                            mSpacingAdd, mIncludePad, effectiveEllipsize,
6435                            ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6436                } else {
6437                    result = new StaticLayout(mTransformed, mTextPaint,
6438                            wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
6439                            mIncludePad);
6440                }
6441            } else if (shouldEllipsize) {
6442                result = new StaticLayout(mTransformed,
6443                        0, mTransformed.length(),
6444                        mTextPaint, wantWidth, alignment, mTextDir, mSpacingMult,
6445                        mSpacingAdd, mIncludePad, effectiveEllipsize,
6446                        ellipsisWidth, mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6447            } else {
6448                result = new StaticLayout(mTransformed, mTextPaint,
6449                        wantWidth, alignment, mTextDir, mSpacingMult, mSpacingAdd,
6450                        mIncludePad);
6451            }
6452        }
6453        return result;
6454    }
6455
6456    private boolean compressText(float width) {
6457        if (isHardwareAccelerated()) return false;
6458
6459        // Only compress the text if it hasn't been compressed by the previous pass
6460        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
6461                mTextPaint.getTextScaleX() == 1.0f) {
6462            final float textWidth = mLayout.getLineWidth(0);
6463            final float overflow = (textWidth + 1.0f - width) / width;
6464            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
6465                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
6466                post(new Runnable() {
6467                    public void run() {
6468                        requestLayout();
6469                    }
6470                });
6471                return true;
6472            }
6473        }
6474
6475        return false;
6476    }
6477
6478    private static int desired(Layout layout) {
6479        int n = layout.getLineCount();
6480        CharSequence text = layout.getText();
6481        float max = 0;
6482
6483        // if any line was wrapped, we can't use it.
6484        // but it's ok for the last line not to have a newline
6485
6486        for (int i = 0; i < n - 1; i++) {
6487            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
6488                return -1;
6489        }
6490
6491        for (int i = 0; i < n; i++) {
6492            max = Math.max(max, layout.getLineWidth(i));
6493        }
6494
6495        return (int) Math.ceil(max);
6496    }
6497
6498    /**
6499     * Set whether the TextView includes extra top and bottom padding to make
6500     * room for accents that go above the normal ascent and descent.
6501     * The default is true.
6502     *
6503     * @see #getIncludeFontPadding()
6504     *
6505     * @attr ref android.R.styleable#TextView_includeFontPadding
6506     */
6507    public void setIncludeFontPadding(boolean includepad) {
6508        if (mIncludePad != includepad) {
6509            mIncludePad = includepad;
6510
6511            if (mLayout != null) {
6512                nullLayouts();
6513                requestLayout();
6514                invalidate();
6515            }
6516        }
6517    }
6518
6519    /**
6520     * Gets whether the TextView includes extra top and bottom padding to make
6521     * room for accents that go above the normal ascent and descent.
6522     *
6523     * @see #setIncludeFontPadding(boolean)
6524     *
6525     * @attr ref android.R.styleable#TextView_includeFontPadding
6526     */
6527    public boolean getIncludeFontPadding() {
6528        return mIncludePad;
6529    }
6530
6531    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
6532
6533    @Override
6534    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
6535        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
6536        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
6537        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
6538        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
6539
6540        int width;
6541        int height;
6542
6543        BoringLayout.Metrics boring = UNKNOWN_BORING;
6544        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
6545
6546        if (mTextDir == null) {
6547            mTextDir = getTextDirectionHeuristic();
6548        }
6549
6550        int des = -1;
6551        boolean fromexisting = false;
6552
6553        if (widthMode == MeasureSpec.EXACTLY) {
6554            // Parent has told us how big to be. So be it.
6555            width = widthSize;
6556        } else {
6557            if (mLayout != null && mEllipsize == null) {
6558                des = desired(mLayout);
6559            }
6560
6561            if (des < 0) {
6562                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6563                if (boring != null) {
6564                    mBoring = boring;
6565                }
6566            } else {
6567                fromexisting = true;
6568            }
6569
6570            if (boring == null || boring == UNKNOWN_BORING) {
6571                if (des < 0) {
6572                    des = (int) Math.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
6573                }
6574                width = des;
6575            } else {
6576                width = boring.width;
6577            }
6578
6579            final Drawables dr = mDrawables;
6580            if (dr != null) {
6581                width = Math.max(width, dr.mDrawableWidthTop);
6582                width = Math.max(width, dr.mDrawableWidthBottom);
6583            }
6584
6585            if (mHint != null) {
6586                int hintDes = -1;
6587                int hintWidth;
6588
6589                if (mHintLayout != null && mEllipsize == null) {
6590                    hintDes = desired(mHintLayout);
6591                }
6592
6593                if (hintDes < 0) {
6594                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
6595                    if (hintBoring != null) {
6596                        mHintBoring = hintBoring;
6597                    }
6598                }
6599
6600                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
6601                    if (hintDes < 0) {
6602                        hintDes = (int) Math.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
6603                    }
6604                    hintWidth = hintDes;
6605                } else {
6606                    hintWidth = hintBoring.width;
6607                }
6608
6609                if (hintWidth > width) {
6610                    width = hintWidth;
6611                }
6612            }
6613
6614            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
6615
6616            if (mMaxWidthMode == EMS) {
6617                width = Math.min(width, mMaxWidth * getLineHeight());
6618            } else {
6619                width = Math.min(width, mMaxWidth);
6620            }
6621
6622            if (mMinWidthMode == EMS) {
6623                width = Math.max(width, mMinWidth * getLineHeight());
6624            } else {
6625                width = Math.max(width, mMinWidth);
6626            }
6627
6628            // Check against our minimum width
6629            width = Math.max(width, getSuggestedMinimumWidth());
6630
6631            if (widthMode == MeasureSpec.AT_MOST) {
6632                width = Math.min(widthSize, width);
6633            }
6634        }
6635
6636        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
6637        int unpaddedWidth = want;
6638
6639        if (mHorizontallyScrolling) want = VERY_WIDE;
6640
6641        int hintWant = want;
6642        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
6643
6644        if (mLayout == null) {
6645            makeNewLayout(want, hintWant, boring, hintBoring,
6646                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6647        } else {
6648            final boolean layoutChanged = (mLayout.getWidth() != want) ||
6649                    (hintWidth != hintWant) ||
6650                    (mLayout.getEllipsizedWidth() !=
6651                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
6652
6653            final boolean widthChanged = (mHint == null) &&
6654                    (mEllipsize == null) &&
6655                    (want > mLayout.getWidth()) &&
6656                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
6657
6658            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
6659
6660            if (layoutChanged || maximumChanged) {
6661                if (!maximumChanged && widthChanged) {
6662                    mLayout.increaseWidthTo(want);
6663                } else {
6664                    makeNewLayout(want, hintWant, boring, hintBoring,
6665                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
6666                }
6667            } else {
6668                // Nothing has changed
6669            }
6670        }
6671
6672        if (heightMode == MeasureSpec.EXACTLY) {
6673            // Parent has told us how big to be. So be it.
6674            height = heightSize;
6675            mDesiredHeightAtMeasure = -1;
6676        } else {
6677            int desired = getDesiredHeight();
6678
6679            height = desired;
6680            mDesiredHeightAtMeasure = desired;
6681
6682            if (heightMode == MeasureSpec.AT_MOST) {
6683                height = Math.min(desired, heightSize);
6684            }
6685        }
6686
6687        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
6688        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
6689            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
6690        }
6691
6692        /*
6693         * We didn't let makeNewLayout() register to bring the cursor into view,
6694         * so do it here if there is any possibility that it is needed.
6695         */
6696        if (mMovement != null ||
6697            mLayout.getWidth() > unpaddedWidth ||
6698            mLayout.getHeight() > unpaddedHeight) {
6699            registerForPreDraw();
6700        } else {
6701            scrollTo(0, 0);
6702        }
6703
6704        setMeasuredDimension(width, height);
6705    }
6706
6707    private int getDesiredHeight() {
6708        return Math.max(
6709                getDesiredHeight(mLayout, true),
6710                getDesiredHeight(mHintLayout, mEllipsize != null));
6711    }
6712
6713    private int getDesiredHeight(Layout layout, boolean cap) {
6714        if (layout == null) {
6715            return 0;
6716        }
6717
6718        int linecount = layout.getLineCount();
6719        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
6720        int desired = layout.getLineTop(linecount);
6721
6722        final Drawables dr = mDrawables;
6723        if (dr != null) {
6724            desired = Math.max(desired, dr.mDrawableHeightLeft);
6725            desired = Math.max(desired, dr.mDrawableHeightRight);
6726        }
6727
6728        desired += pad;
6729
6730        if (mMaxMode == LINES) {
6731            /*
6732             * Don't cap the hint to a certain number of lines.
6733             * (Do cap it, though, if we have a maximum pixel height.)
6734             */
6735            if (cap) {
6736                if (linecount > mMaximum) {
6737                    desired = layout.getLineTop(mMaximum);
6738
6739                    if (dr != null) {
6740                        desired = Math.max(desired, dr.mDrawableHeightLeft);
6741                        desired = Math.max(desired, dr.mDrawableHeightRight);
6742                    }
6743
6744                    desired += pad;
6745                    linecount = mMaximum;
6746                }
6747            }
6748        } else {
6749            desired = Math.min(desired, mMaximum);
6750        }
6751
6752        if (mMinMode == LINES) {
6753            if (linecount < mMinimum) {
6754                desired += getLineHeight() * (mMinimum - linecount);
6755            }
6756        } else {
6757            desired = Math.max(desired, mMinimum);
6758        }
6759
6760        // Check against our minimum height
6761        desired = Math.max(desired, getSuggestedMinimumHeight());
6762
6763        return desired;
6764    }
6765
6766    /**
6767     * Check whether a change to the existing text layout requires a
6768     * new view layout.
6769     */
6770    private void checkForResize() {
6771        boolean sizeChanged = false;
6772
6773        if (mLayout != null) {
6774            // Check if our width changed
6775            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
6776                sizeChanged = true;
6777                invalidate();
6778            }
6779
6780            // Check if our height changed
6781            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
6782                int desiredHeight = getDesiredHeight();
6783
6784                if (desiredHeight != this.getHeight()) {
6785                    sizeChanged = true;
6786                }
6787            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
6788                if (mDesiredHeightAtMeasure >= 0) {
6789                    int desiredHeight = getDesiredHeight();
6790
6791                    if (desiredHeight != mDesiredHeightAtMeasure) {
6792                        sizeChanged = true;
6793                    }
6794                }
6795            }
6796        }
6797
6798        if (sizeChanged) {
6799            requestLayout();
6800            // caller will have already invalidated
6801        }
6802    }
6803
6804    /**
6805     * Check whether entirely new text requires a new view layout
6806     * or merely a new text layout.
6807     */
6808    private void checkForRelayout() {
6809        // If we have a fixed width, we can just swap in a new text layout
6810        // if the text height stays the same or if the view height is fixed.
6811
6812        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
6813                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
6814                (mHint == null || mHintLayout != null) &&
6815                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
6816            // Static width, so try making a new text layout.
6817
6818            int oldht = mLayout.getHeight();
6819            int want = mLayout.getWidth();
6820            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
6821
6822            /*
6823             * No need to bring the text into view, since the size is not
6824             * changing (unless we do the requestLayout(), in which case it
6825             * will happen at measure).
6826             */
6827            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
6828                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
6829                          false);
6830
6831            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
6832                // In a fixed-height view, so use our new text layout.
6833                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
6834                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
6835                    invalidate();
6836                    return;
6837                }
6838
6839                // Dynamic height, but height has stayed the same,
6840                // so use our new text layout.
6841                if (mLayout.getHeight() == oldht &&
6842                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
6843                    invalidate();
6844                    return;
6845                }
6846            }
6847
6848            // We lose: the height has changed and we have a dynamic height.
6849            // Request a new view layout using our new text layout.
6850            requestLayout();
6851            invalidate();
6852        } else {
6853            // Dynamic width, so we have no choice but to request a new
6854            // view layout with a new text layout.
6855            nullLayouts();
6856            requestLayout();
6857            invalidate();
6858        }
6859    }
6860
6861    @Override
6862    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
6863        super.onLayout(changed, left, top, right, bottom);
6864        if (mDeferScroll >= 0) {
6865            int curs = mDeferScroll;
6866            mDeferScroll = -1;
6867            bringPointIntoView(Math.min(curs, mText.length()));
6868        }
6869    }
6870
6871    private boolean isShowingHint() {
6872        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
6873    }
6874
6875    /**
6876     * Returns true if anything changed.
6877     */
6878    private boolean bringTextIntoView() {
6879        Layout layout = isShowingHint() ? mHintLayout : mLayout;
6880        int line = 0;
6881        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6882            line = layout.getLineCount() - 1;
6883        }
6884
6885        Layout.Alignment a = layout.getParagraphAlignment(line);
6886        int dir = layout.getParagraphDirection(line);
6887        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6888        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
6889        int ht = layout.getHeight();
6890
6891        int scrollx, scrolly;
6892
6893        // Convert to left, center, or right alignment.
6894        if (a == Layout.Alignment.ALIGN_NORMAL) {
6895            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
6896                Layout.Alignment.ALIGN_RIGHT;
6897        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
6898            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
6899                Layout.Alignment.ALIGN_LEFT;
6900        }
6901
6902        if (a == Layout.Alignment.ALIGN_CENTER) {
6903            /*
6904             * Keep centered if possible, or, if it is too wide to fit,
6905             * keep leading edge in view.
6906             */
6907
6908            int left = (int) Math.floor(layout.getLineLeft(line));
6909            int right = (int) Math.ceil(layout.getLineRight(line));
6910
6911            if (right - left < hspace) {
6912                scrollx = (right + left) / 2 - hspace / 2;
6913            } else {
6914                if (dir < 0) {
6915                    scrollx = right - hspace;
6916                } else {
6917                    scrollx = left;
6918                }
6919            }
6920        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
6921            int right = (int) Math.ceil(layout.getLineRight(line));
6922            scrollx = right - hspace;
6923        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
6924            scrollx = (int) Math.floor(layout.getLineLeft(line));
6925        }
6926
6927        if (ht < vspace) {
6928            scrolly = 0;
6929        } else {
6930            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
6931                scrolly = ht - vspace;
6932            } else {
6933                scrolly = 0;
6934            }
6935        }
6936
6937        if (scrollx != mScrollX || scrolly != mScrollY) {
6938            scrollTo(scrollx, scrolly);
6939            return true;
6940        } else {
6941            return false;
6942        }
6943    }
6944
6945    /**
6946     * Move the point, specified by the offset, into the view if it is needed.
6947     * This has to be called after layout. Returns true if anything changed.
6948     */
6949    public boolean bringPointIntoView(int offset) {
6950        if (isLayoutRequested()) {
6951            mDeferScroll = offset;
6952            return false;
6953        }
6954        boolean changed = false;
6955
6956        Layout layout = isShowingHint() ? mHintLayout: mLayout;
6957
6958        if (layout == null) return changed;
6959
6960        int line = layout.getLineForOffset(offset);
6961
6962        int grav;
6963
6964        switch (layout.getParagraphAlignment(line)) {
6965            case ALIGN_LEFT:
6966                grav = 1;
6967                break;
6968            case ALIGN_RIGHT:
6969                grav = -1;
6970                break;
6971            case ALIGN_NORMAL:
6972                grav = layout.getParagraphDirection(line);
6973                break;
6974            case ALIGN_OPPOSITE:
6975                grav = -layout.getParagraphDirection(line);
6976                break;
6977            case ALIGN_CENTER:
6978            default:
6979                grav = 0;
6980                break;
6981        }
6982
6983        // We only want to clamp the cursor to fit within the layout width
6984        // in left-to-right modes, because in a right to left alignment,
6985        // we want to scroll to keep the line-right on the screen, as other
6986        // lines are likely to have text flush with the right margin, which
6987        // we want to keep visible.
6988        // A better long-term solution would probably be to measure both
6989        // the full line and a blank-trimmed version, and, for example, use
6990        // the latter measurement for centering and right alignment, but for
6991        // the time being we only implement the cursor clamping in left to
6992        // right where it is most likely to be annoying.
6993        final boolean clamped = grav > 0;
6994        // FIXME: Is it okay to truncate this, or should we round?
6995        final int x = (int)layout.getPrimaryHorizontal(offset, clamped);
6996        final int top = layout.getLineTop(line);
6997        final int bottom = layout.getLineTop(line + 1);
6998
6999        int left = (int) Math.floor(layout.getLineLeft(line));
7000        int right = (int) Math.ceil(layout.getLineRight(line));
7001        int ht = layout.getHeight();
7002
7003        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7004        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7005        if (!mHorizontallyScrolling && right - left > hspace && right > x) {
7006            // If cursor has been clamped, make sure we don't scroll.
7007            right = Math.max(x, left + hspace);
7008        }
7009
7010        int hslack = (bottom - top) / 2;
7011        int vslack = hslack;
7012
7013        if (vslack > vspace / 4)
7014            vslack = vspace / 4;
7015        if (hslack > hspace / 4)
7016            hslack = hspace / 4;
7017
7018        int hs = mScrollX;
7019        int vs = mScrollY;
7020
7021        if (top - vs < vslack)
7022            vs = top - vslack;
7023        if (bottom - vs > vspace - vslack)
7024            vs = bottom - (vspace - vslack);
7025        if (ht - vs < vspace)
7026            vs = ht - vspace;
7027        if (0 - vs > 0)
7028            vs = 0;
7029
7030        if (grav != 0) {
7031            if (x - hs < hslack) {
7032                hs = x - hslack;
7033            }
7034            if (x - hs > hspace - hslack) {
7035                hs = x - (hspace - hslack);
7036            }
7037        }
7038
7039        if (grav < 0) {
7040            if (left - hs > 0)
7041                hs = left;
7042            if (right - hs < hspace)
7043                hs = right - hspace;
7044        } else if (grav > 0) {
7045            if (right - hs < hspace)
7046                hs = right - hspace;
7047            if (left - hs > 0)
7048                hs = left;
7049        } else /* grav == 0 */ {
7050            if (right - left <= hspace) {
7051                /*
7052                 * If the entire text fits, center it exactly.
7053                 */
7054                hs = left - (hspace - (right - left)) / 2;
7055            } else if (x > right - hslack) {
7056                /*
7057                 * If we are near the right edge, keep the right edge
7058                 * at the edge of the view.
7059                 */
7060                hs = right - hspace;
7061            } else if (x < left + hslack) {
7062                /*
7063                 * If we are near the left edge, keep the left edge
7064                 * at the edge of the view.
7065                 */
7066                hs = left;
7067            } else if (left > hs) {
7068                /*
7069                 * Is there whitespace visible at the left?  Fix it if so.
7070                 */
7071                hs = left;
7072            } else if (right < hs + hspace) {
7073                /*
7074                 * Is there whitespace visible at the right?  Fix it if so.
7075                 */
7076                hs = right - hspace;
7077            } else {
7078                /*
7079                 * Otherwise, float as needed.
7080                 */
7081                if (x - hs < hslack) {
7082                    hs = x - hslack;
7083                }
7084                if (x - hs > hspace - hslack) {
7085                    hs = x - (hspace - hslack);
7086                }
7087            }
7088        }
7089
7090        if (hs != mScrollX || vs != mScrollY) {
7091            if (mScroller == null) {
7092                scrollTo(hs, vs);
7093            } else {
7094                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
7095                int dx = hs - mScrollX;
7096                int dy = vs - mScrollY;
7097
7098                if (duration > ANIMATED_SCROLL_GAP) {
7099                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
7100                    awakenScrollBars(mScroller.getDuration());
7101                    invalidate();
7102                } else {
7103                    if (!mScroller.isFinished()) {
7104                        mScroller.abortAnimation();
7105                    }
7106
7107                    scrollBy(dx, dy);
7108                }
7109
7110                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
7111            }
7112
7113            changed = true;
7114        }
7115
7116        if (isFocused()) {
7117            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
7118            // requestRectangleOnScreen() is in terms of content coordinates.
7119
7120            // The offsets here are to ensure the rectangle we are using is
7121            // within our view bounds, in case the cursor is on the far left
7122            // or right.  If it isn't withing the bounds, then this request
7123            // will be ignored.
7124            if (mTempRect == null) mTempRect = new Rect();
7125            mTempRect.set(x - 2, top, x + 2, bottom);
7126            getInterestingRect(mTempRect, line);
7127            mTempRect.offset(mScrollX, mScrollY);
7128
7129            if (requestRectangleOnScreen(mTempRect)) {
7130                changed = true;
7131            }
7132        }
7133
7134        return changed;
7135    }
7136
7137    /**
7138     * Move the cursor, if needed, so that it is at an offset that is visible
7139     * to the user.  This will not move the cursor if it represents more than
7140     * one character (a selection range).  This will only work if the
7141     * TextView contains spannable text; otherwise it will do nothing.
7142     *
7143     * @return True if the cursor was actually moved, false otherwise.
7144     */
7145    public boolean moveCursorToVisibleOffset() {
7146        if (!(mText instanceof Spannable)) {
7147            return false;
7148        }
7149        int start = getSelectionStart();
7150        int end = getSelectionEnd();
7151        if (start != end) {
7152            return false;
7153        }
7154
7155        // First: make sure the line is visible on screen:
7156
7157        int line = mLayout.getLineForOffset(start);
7158
7159        final int top = mLayout.getLineTop(line);
7160        final int bottom = mLayout.getLineTop(line + 1);
7161        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7162        int vslack = (bottom - top) / 2;
7163        if (vslack > vspace / 4)
7164            vslack = vspace / 4;
7165        final int vs = mScrollY;
7166
7167        if (top < (vs+vslack)) {
7168            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
7169        } else if (bottom > (vspace+vs-vslack)) {
7170            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
7171        }
7172
7173        // Next: make sure the character is visible on screen:
7174
7175        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7176        final int hs = mScrollX;
7177        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
7178        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
7179
7180        // line might contain bidirectional text
7181        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
7182        final int highChar = leftChar > rightChar ? leftChar : rightChar;
7183
7184        int newStart = start;
7185        if (newStart < lowChar) {
7186            newStart = lowChar;
7187        } else if (newStart > highChar) {
7188            newStart = highChar;
7189        }
7190
7191        if (newStart != start) {
7192            Selection.setSelection((Spannable)mText, newStart);
7193            return true;
7194        }
7195
7196        return false;
7197    }
7198
7199    @Override
7200    public void computeScroll() {
7201        if (mScroller != null) {
7202            if (mScroller.computeScrollOffset()) {
7203                mScrollX = mScroller.getCurrX();
7204                mScrollY = mScroller.getCurrY();
7205                invalidateParentCaches();
7206                postInvalidate();  // So we draw again
7207            }
7208        }
7209    }
7210
7211    private void getInterestingRect(Rect r, int line) {
7212        convertFromViewportToContentCoordinates(r);
7213
7214        // Rectangle can can be expanded on first and last line to take
7215        // padding into account.
7216        // TODO Take left/right padding into account too?
7217        if (line == 0) r.top -= getExtendedPaddingTop();
7218        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
7219    }
7220
7221    private void convertFromViewportToContentCoordinates(Rect r) {
7222        final int horizontalOffset = viewportToContentHorizontalOffset();
7223        r.left += horizontalOffset;
7224        r.right += horizontalOffset;
7225
7226        final int verticalOffset = viewportToContentVerticalOffset();
7227        r.top += verticalOffset;
7228        r.bottom += verticalOffset;
7229    }
7230
7231    int viewportToContentHorizontalOffset() {
7232        return getCompoundPaddingLeft() - mScrollX;
7233    }
7234
7235    int viewportToContentVerticalOffset() {
7236        int offset = getExtendedPaddingTop() - mScrollY;
7237        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
7238            offset += getVerticalOffset(false);
7239        }
7240        return offset;
7241    }
7242
7243    @Override
7244    public void debug(int depth) {
7245        super.debug(depth);
7246
7247        String output = debugIndent(depth);
7248        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
7249                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
7250                + "} ";
7251
7252        if (mText != null) {
7253
7254            output += "mText=\"" + mText + "\" ";
7255            if (mLayout != null) {
7256                output += "mLayout width=" + mLayout.getWidth()
7257                        + " height=" + mLayout.getHeight();
7258            }
7259        } else {
7260            output += "mText=NULL";
7261        }
7262        Log.d(VIEW_LOG_TAG, output);
7263    }
7264
7265    /**
7266     * Convenience for {@link Selection#getSelectionStart}.
7267     */
7268    @ViewDebug.ExportedProperty(category = "text")
7269    public int getSelectionStart() {
7270        return Selection.getSelectionStart(getText());
7271    }
7272
7273    /**
7274     * Convenience for {@link Selection#getSelectionEnd}.
7275     */
7276    @ViewDebug.ExportedProperty(category = "text")
7277    public int getSelectionEnd() {
7278        return Selection.getSelectionEnd(getText());
7279    }
7280
7281    /**
7282     * Return true iff there is a selection inside this text view.
7283     */
7284    public boolean hasSelection() {
7285        final int selectionStart = getSelectionStart();
7286        final int selectionEnd = getSelectionEnd();
7287
7288        return selectionStart >= 0 && selectionStart != selectionEnd;
7289    }
7290
7291    /**
7292     * Sets the properties of this field (lines, horizontally scrolling,
7293     * transformation method) to be for a single-line input.
7294     *
7295     * @attr ref android.R.styleable#TextView_singleLine
7296     */
7297    public void setSingleLine() {
7298        setSingleLine(true);
7299    }
7300
7301    /**
7302     * Sets the properties of this field to transform input to ALL CAPS
7303     * display. This may use a "small caps" formatting if available.
7304     * This setting will be ignored if this field is editable or selectable.
7305     *
7306     * This call replaces the current transformation method. Disabling this
7307     * will not necessarily restore the previous behavior from before this
7308     * was enabled.
7309     *
7310     * @see #setTransformationMethod(TransformationMethod)
7311     * @attr ref android.R.styleable#TextView_textAllCaps
7312     */
7313    public void setAllCaps(boolean allCaps) {
7314        if (allCaps) {
7315            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
7316        } else {
7317            setTransformationMethod(null);
7318        }
7319    }
7320
7321    /**
7322     * If true, sets the properties of this field (number of lines, horizontally scrolling,
7323     * transformation method) to be for a single-line input; if false, restores these to the default
7324     * conditions.
7325     *
7326     * Note that the default conditions are not necessarily those that were in effect prior this
7327     * method, and you may want to reset these properties to your custom values.
7328     *
7329     * @attr ref android.R.styleable#TextView_singleLine
7330     */
7331    @android.view.RemotableViewMethod
7332    public void setSingleLine(boolean singleLine) {
7333        // Could be used, but may break backward compatibility.
7334        // if (mSingleLine == singleLine) return;
7335        setInputTypeSingleLine(singleLine);
7336        applySingleLine(singleLine, true, true);
7337    }
7338
7339    /**
7340     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
7341     * @param singleLine
7342     */
7343    private void setInputTypeSingleLine(boolean singleLine) {
7344        if (mEditor != null &&
7345                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
7346            if (singleLine) {
7347                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7348            } else {
7349                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7350            }
7351        }
7352    }
7353
7354    private void applySingleLine(boolean singleLine, boolean applyTransformation,
7355            boolean changeMaxLines) {
7356        mSingleLine = singleLine;
7357        if (singleLine) {
7358            setLines(1);
7359            setHorizontallyScrolling(true);
7360            if (applyTransformation) {
7361                setTransformationMethod(SingleLineTransformationMethod.getInstance());
7362            }
7363        } else {
7364            if (changeMaxLines) {
7365                setMaxLines(Integer.MAX_VALUE);
7366            }
7367            setHorizontallyScrolling(false);
7368            if (applyTransformation) {
7369                setTransformationMethod(null);
7370            }
7371        }
7372    }
7373
7374    /**
7375     * Causes words in the text that are longer than the view is wide
7376     * to be ellipsized instead of broken in the middle.  You may also
7377     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
7378     * to constrain the text to a single line.  Use <code>null</code>
7379     * to turn off ellipsizing.
7380     *
7381     * If {@link #setMaxLines} has been used to set two or more lines,
7382     * only {@link android.text.TextUtils.TruncateAt#END} and
7383     * {@link android.text.TextUtils.TruncateAt#MARQUEE} are supported
7384     * (other ellipsizing types will not do anything).
7385     *
7386     * @attr ref android.R.styleable#TextView_ellipsize
7387     */
7388    public void setEllipsize(TextUtils.TruncateAt where) {
7389        // TruncateAt is an enum. != comparison is ok between these singleton objects.
7390        if (mEllipsize != where) {
7391            mEllipsize = where;
7392
7393            if (mLayout != null) {
7394                nullLayouts();
7395                requestLayout();
7396                invalidate();
7397            }
7398        }
7399    }
7400
7401    /**
7402     * Sets how many times to repeat the marquee animation. Only applied if the
7403     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
7404     *
7405     * @see #getMarqueeRepeatLimit()
7406     *
7407     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7408     */
7409    public void setMarqueeRepeatLimit(int marqueeLimit) {
7410        mMarqueeRepeatLimit = marqueeLimit;
7411    }
7412
7413    /**
7414     * Gets the number of times the marquee animation is repeated. Only meaningful if the
7415     * TextView has marquee enabled.
7416     *
7417     * @return the number of times the marquee animation is repeated. -1 if the animation
7418     * repeats indefinitely
7419     *
7420     * @see #setMarqueeRepeatLimit(int)
7421     *
7422     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7423     */
7424    public int getMarqueeRepeatLimit() {
7425        return mMarqueeRepeatLimit;
7426    }
7427
7428    /**
7429     * Returns where, if anywhere, words that are longer than the view
7430     * is wide should be ellipsized.
7431     */
7432    @ViewDebug.ExportedProperty
7433    public TextUtils.TruncateAt getEllipsize() {
7434        return mEllipsize;
7435    }
7436
7437    /**
7438     * Set the TextView so that when it takes focus, all the text is
7439     * selected.
7440     *
7441     * @attr ref android.R.styleable#TextView_selectAllOnFocus
7442     */
7443    @android.view.RemotableViewMethod
7444    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
7445        createEditorIfNeeded();
7446        mEditor.mSelectAllOnFocus = selectAllOnFocus;
7447
7448        if (selectAllOnFocus && !(mText instanceof Spannable)) {
7449            setText(mText, BufferType.SPANNABLE);
7450        }
7451    }
7452
7453    /**
7454     * Set whether the cursor is visible. The default is true. Note that this property only
7455     * makes sense for editable TextView.
7456     *
7457     * @see #isCursorVisible()
7458     *
7459     * @attr ref android.R.styleable#TextView_cursorVisible
7460     */
7461    @android.view.RemotableViewMethod
7462    public void setCursorVisible(boolean visible) {
7463        if (visible && mEditor == null) return; // visible is the default value with no edit data
7464        createEditorIfNeeded();
7465        if (mEditor.mCursorVisible != visible) {
7466            mEditor.mCursorVisible = visible;
7467            invalidate();
7468
7469            mEditor.makeBlink();
7470
7471            // InsertionPointCursorController depends on mCursorVisible
7472            mEditor.prepareCursorControllers();
7473        }
7474    }
7475
7476    /**
7477     * @return whether or not the cursor is visible (assuming this TextView is editable)
7478     *
7479     * @see #setCursorVisible(boolean)
7480     *
7481     * @attr ref android.R.styleable#TextView_cursorVisible
7482     */
7483    public boolean isCursorVisible() {
7484        // true is the default value
7485        return mEditor == null ? true : mEditor.mCursorVisible;
7486    }
7487
7488    private boolean canMarquee() {
7489        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
7490        return width > 0 && (mLayout.getLineWidth(0) > width ||
7491                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
7492                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
7493    }
7494
7495    private void startMarquee() {
7496        // Do not ellipsize EditText
7497        if (getKeyListener() != null) return;
7498
7499        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
7500            return;
7501        }
7502
7503        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
7504                getLineCount() == 1 && canMarquee()) {
7505
7506            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7507                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
7508                final Layout tmp = mLayout;
7509                mLayout = mSavedMarqueeModeLayout;
7510                mSavedMarqueeModeLayout = tmp;
7511                setHorizontalFadingEdgeEnabled(true);
7512                requestLayout();
7513                invalidate();
7514            }
7515
7516            if (mMarquee == null) mMarquee = new Marquee(this);
7517            mMarquee.start(mMarqueeRepeatLimit);
7518        }
7519    }
7520
7521    private void stopMarquee() {
7522        if (mMarquee != null && !mMarquee.isStopped()) {
7523            mMarquee.stop();
7524        }
7525
7526        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
7527            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
7528            final Layout tmp = mSavedMarqueeModeLayout;
7529            mSavedMarqueeModeLayout = mLayout;
7530            mLayout = tmp;
7531            setHorizontalFadingEdgeEnabled(false);
7532            requestLayout();
7533            invalidate();
7534        }
7535    }
7536
7537    private void startStopMarquee(boolean start) {
7538        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7539            if (start) {
7540                startMarquee();
7541            } else {
7542                stopMarquee();
7543            }
7544        }
7545    }
7546
7547    /**
7548     * This method is called when the text is changed, in case any subclasses
7549     * would like to know.
7550     *
7551     * Within <code>text</code>, the <code>lengthAfter</code> characters
7552     * beginning at <code>start</code> have just replaced old text that had
7553     * length <code>lengthBefore</code>. It is an error to attempt to make
7554     * changes to <code>text</code> from this callback.
7555     *
7556     * @param text The text the TextView is displaying
7557     * @param start The offset of the start of the range of the text that was
7558     * modified
7559     * @param lengthBefore The length of the former text that has been replaced
7560     * @param lengthAfter The length of the replacement modified text
7561     */
7562    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
7563        // intentionally empty, template pattern method can be overridden by subclasses
7564    }
7565
7566    /**
7567     * This method is called when the selection has changed, in case any
7568     * subclasses would like to know.
7569     *
7570     * @param selStart The new selection start location.
7571     * @param selEnd The new selection end location.
7572     */
7573    protected void onSelectionChanged(int selStart, int selEnd) {
7574        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
7575    }
7576
7577    /**
7578     * Adds a TextWatcher to the list of those whose methods are called
7579     * whenever this TextView's text changes.
7580     * <p>
7581     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
7582     * not called after {@link #setText} calls.  Now, doing {@link #setText}
7583     * if there are any text changed listeners forces the buffer type to
7584     * Editable if it would not otherwise be and does call this method.
7585     */
7586    public void addTextChangedListener(TextWatcher watcher) {
7587        if (mListeners == null) {
7588            mListeners = new ArrayList<TextWatcher>();
7589        }
7590
7591        mListeners.add(watcher);
7592    }
7593
7594    /**
7595     * Removes the specified TextWatcher from the list of those whose
7596     * methods are called
7597     * whenever this TextView's text changes.
7598     */
7599    public void removeTextChangedListener(TextWatcher watcher) {
7600        if (mListeners != null) {
7601            int i = mListeners.indexOf(watcher);
7602
7603            if (i >= 0) {
7604                mListeners.remove(i);
7605            }
7606        }
7607    }
7608
7609    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
7610        if (mListeners != null) {
7611            final ArrayList<TextWatcher> list = mListeners;
7612            final int count = list.size();
7613            for (int i = 0; i < count; i++) {
7614                list.get(i).beforeTextChanged(text, start, before, after);
7615            }
7616        }
7617
7618        // The spans that are inside or intersect the modified region no longer make sense
7619        removeIntersectingNonAdjacentSpans(start, start + before, SpellCheckSpan.class);
7620        removeIntersectingNonAdjacentSpans(start, start + before, SuggestionSpan.class);
7621    }
7622
7623    // Removes all spans that are inside or actually overlap the start..end range
7624    private <T> void removeIntersectingNonAdjacentSpans(int start, int end, Class<T> type) {
7625        if (!(mText instanceof Editable)) return;
7626        Editable text = (Editable) mText;
7627
7628        T[] spans = text.getSpans(start, end, type);
7629        final int length = spans.length;
7630        for (int i = 0; i < length; i++) {
7631            final int spanStart = text.getSpanStart(spans[i]);
7632            final int spanEnd = text.getSpanEnd(spans[i]);
7633            if (spanEnd == start || spanStart == end) break;
7634            text.removeSpan(spans[i]);
7635        }
7636    }
7637
7638    void removeAdjacentSuggestionSpans(final int pos) {
7639        if (!(mText instanceof Editable)) return;
7640        final Editable text = (Editable) mText;
7641
7642        final SuggestionSpan[] spans = text.getSpans(pos, pos, SuggestionSpan.class);
7643        final int length = spans.length;
7644        for (int i = 0; i < length; i++) {
7645            final int spanStart = text.getSpanStart(spans[i]);
7646            final int spanEnd = text.getSpanEnd(spans[i]);
7647            if (spanEnd == pos || spanStart == pos) {
7648                if (SpellChecker.haveWordBoundariesChanged(text, pos, pos, spanStart, spanEnd)) {
7649                    text.removeSpan(spans[i]);
7650                }
7651            }
7652        }
7653    }
7654
7655    /**
7656     * Not private so it can be called from an inner class without going
7657     * through a thunk.
7658     */
7659    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
7660        if (mListeners != null) {
7661            final ArrayList<TextWatcher> list = mListeners;
7662            final int count = list.size();
7663            for (int i = 0; i < count; i++) {
7664                list.get(i).onTextChanged(text, start, before, after);
7665            }
7666        }
7667
7668        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
7669    }
7670
7671    /**
7672     * Not private so it can be called from an inner class without going
7673     * through a thunk.
7674     */
7675    void sendAfterTextChanged(Editable text) {
7676        if (mListeners != null) {
7677            final ArrayList<TextWatcher> list = mListeners;
7678            final int count = list.size();
7679            for (int i = 0; i < count; i++) {
7680                list.get(i).afterTextChanged(text);
7681            }
7682        }
7683        hideErrorIfUnchanged();
7684    }
7685
7686    void updateAfterEdit() {
7687        invalidate();
7688        int curs = getSelectionStart();
7689
7690        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7691            registerForPreDraw();
7692        }
7693
7694        checkForResize();
7695
7696        if (curs >= 0) {
7697            mHighlightPathBogus = true;
7698            if (mEditor != null) mEditor.makeBlink();
7699            bringPointIntoView(curs);
7700        }
7701    }
7702
7703    /**
7704     * Not private so it can be called from an inner class without going
7705     * through a thunk.
7706     */
7707    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
7708        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7709        if (ims == null || ims.mBatchEditNesting == 0) {
7710            updateAfterEdit();
7711        }
7712        if (ims != null) {
7713            ims.mContentChanged = true;
7714            if (ims.mChangedStart < 0) {
7715                ims.mChangedStart = start;
7716                ims.mChangedEnd = start+before;
7717            } else {
7718                ims.mChangedStart = Math.min(ims.mChangedStart, start);
7719                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
7720            }
7721            ims.mChangedDelta += after-before;
7722        }
7723        resetErrorChangedFlag();
7724        sendOnTextChanged(buffer, start, before, after);
7725        onTextChanged(buffer, start, before, after);
7726    }
7727
7728    /**
7729     * Not private so it can be called from an inner class without going
7730     * through a thunk.
7731     */
7732    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
7733        // XXX Make the start and end move together if this ends up
7734        // spending too much time invalidating.
7735
7736        boolean selChanged = false;
7737        int newSelStart=-1, newSelEnd=-1;
7738
7739        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
7740
7741        if (what == Selection.SELECTION_END) {
7742            selChanged = true;
7743            newSelEnd = newStart;
7744
7745            if (oldStart >= 0 || newStart >= 0) {
7746                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
7747                checkForResize();
7748                registerForPreDraw();
7749                if (mEditor != null) mEditor.makeBlink();
7750            }
7751        }
7752
7753        if (what == Selection.SELECTION_START) {
7754            selChanged = true;
7755            newSelStart = newStart;
7756
7757            if (oldStart >= 0 || newStart >= 0) {
7758                int end = Selection.getSelectionEnd(buf);
7759                invalidateCursor(end, oldStart, newStart);
7760            }
7761        }
7762
7763        if (selChanged) {
7764            mHighlightPathBogus = true;
7765            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
7766
7767            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
7768                if (newSelStart < 0) {
7769                    newSelStart = Selection.getSelectionStart(buf);
7770                }
7771                if (newSelEnd < 0) {
7772                    newSelEnd = Selection.getSelectionEnd(buf);
7773                }
7774                onSelectionChanged(newSelStart, newSelEnd);
7775            }
7776        }
7777
7778        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
7779                what instanceof CharacterStyle) {
7780            if (ims == null || ims.mBatchEditNesting == 0) {
7781                invalidate();
7782                mHighlightPathBogus = true;
7783                checkForResize();
7784            } else {
7785                ims.mContentChanged = true;
7786            }
7787            if (mEditor != null) {
7788                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
7789                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
7790            }
7791        }
7792
7793        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
7794            mHighlightPathBogus = true;
7795            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
7796                ims.mSelectionModeChanged = true;
7797            }
7798
7799            if (Selection.getSelectionStart(buf) >= 0) {
7800                if (ims == null || ims.mBatchEditNesting == 0) {
7801                    invalidateCursor();
7802                } else {
7803                    ims.mCursorChanged = true;
7804                }
7805            }
7806        }
7807
7808        if (what instanceof ParcelableSpan) {
7809            // If this is a span that can be sent to a remote process,
7810            // the current extract editor would be interested in it.
7811            if (ims != null && ims.mExtractedTextRequest != null) {
7812                if (ims.mBatchEditNesting != 0) {
7813                    if (oldStart >= 0) {
7814                        if (ims.mChangedStart > oldStart) {
7815                            ims.mChangedStart = oldStart;
7816                        }
7817                        if (ims.mChangedStart > oldEnd) {
7818                            ims.mChangedStart = oldEnd;
7819                        }
7820                    }
7821                    if (newStart >= 0) {
7822                        if (ims.mChangedStart > newStart) {
7823                            ims.mChangedStart = newStart;
7824                        }
7825                        if (ims.mChangedStart > newEnd) {
7826                            ims.mChangedStart = newEnd;
7827                        }
7828                    }
7829                } else {
7830                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
7831                            + oldStart + "-" + oldEnd + ","
7832                            + newStart + "-" + newEnd + " " + what);
7833                    ims.mContentChanged = true;
7834                }
7835            }
7836        }
7837
7838        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
7839                what instanceof SpellCheckSpan) {
7840            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
7841        }
7842    }
7843
7844    /**
7845     * @hide
7846     */
7847    @Override
7848    public void dispatchFinishTemporaryDetach() {
7849        mDispatchTemporaryDetach = true;
7850        super.dispatchFinishTemporaryDetach();
7851        mDispatchTemporaryDetach = false;
7852    }
7853
7854    @Override
7855    public void onStartTemporaryDetach() {
7856        super.onStartTemporaryDetach();
7857        // Only track when onStartTemporaryDetach() is called directly,
7858        // usually because this instance is an editable field in a list
7859        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
7860
7861        // Tell the editor that we are temporarily detached. It can use this to preserve
7862        // selection state as needed.
7863        if (mEditor != null) mEditor.mTemporaryDetach = true;
7864    }
7865
7866    @Override
7867    public void onFinishTemporaryDetach() {
7868        super.onFinishTemporaryDetach();
7869        // Only track when onStartTemporaryDetach() is called directly,
7870        // usually because this instance is an editable field in a list
7871        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
7872        if (mEditor != null) mEditor.mTemporaryDetach = false;
7873    }
7874
7875    @Override
7876    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
7877        if (mTemporaryDetach) {
7878            // If we are temporarily in the detach state, then do nothing.
7879            super.onFocusChanged(focused, direction, previouslyFocusedRect);
7880            return;
7881        }
7882
7883        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
7884
7885        if (focused) {
7886            if (mText instanceof Spannable) {
7887                Spannable sp = (Spannable) mText;
7888                MetaKeyKeyListener.resetMetaState(sp);
7889            }
7890        }
7891
7892        startStopMarquee(focused);
7893
7894        if (mTransformation != null) {
7895            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
7896        }
7897
7898        super.onFocusChanged(focused, direction, previouslyFocusedRect);
7899    }
7900
7901    @Override
7902    public void onWindowFocusChanged(boolean hasWindowFocus) {
7903        super.onWindowFocusChanged(hasWindowFocus);
7904
7905        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
7906
7907        startStopMarquee(hasWindowFocus);
7908    }
7909
7910    @Override
7911    protected void onVisibilityChanged(View changedView, int visibility) {
7912        super.onVisibilityChanged(changedView, visibility);
7913        if (mEditor != null && visibility != VISIBLE) {
7914            mEditor.hideControllers();
7915        }
7916    }
7917
7918    /**
7919     * Use {@link BaseInputConnection#removeComposingSpans
7920     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
7921     * state from this text view.
7922     */
7923    public void clearComposingText() {
7924        if (mText instanceof Spannable) {
7925            BaseInputConnection.removeComposingSpans((Spannable)mText);
7926        }
7927    }
7928
7929    @Override
7930    public void setSelected(boolean selected) {
7931        boolean wasSelected = isSelected();
7932
7933        super.setSelected(selected);
7934
7935        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7936            if (selected) {
7937                startMarquee();
7938            } else {
7939                stopMarquee();
7940            }
7941        }
7942    }
7943
7944    @Override
7945    public boolean onTouchEvent(MotionEvent event) {
7946        final int action = event.getActionMasked();
7947
7948        if (mEditor != null) mEditor.onTouchEvent(event);
7949
7950        final boolean superResult = super.onTouchEvent(event);
7951
7952        /*
7953         * Don't handle the release after a long press, because it will
7954         * move the selection away from whatever the menu action was
7955         * trying to affect.
7956         */
7957        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
7958            mEditor.mDiscardNextActionUp = false;
7959            return superResult;
7960        }
7961
7962        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
7963                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
7964
7965         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
7966                && mText instanceof Spannable && mLayout != null) {
7967            boolean handled = false;
7968
7969            if (mMovement != null) {
7970                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
7971            }
7972
7973            final boolean textIsSelectable = isTextSelectable();
7974            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
7975                // The LinkMovementMethod which should handle taps on links has not been installed
7976                // on non editable text that support text selection.
7977                // We reproduce its behavior here to open links for these.
7978                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
7979                        getSelectionEnd(), ClickableSpan.class);
7980
7981                if (links.length > 0) {
7982                    links[0].onClick(this);
7983                    handled = true;
7984                }
7985            }
7986
7987            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
7988                // Show the IME, except when selecting in read-only text.
7989                final InputMethodManager imm = InputMethodManager.peekInstance();
7990                viewClicked(imm);
7991                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
7992                    handled |= imm != null && imm.showSoftInput(this, 0);
7993                }
7994
7995                // The above condition ensures that the mEditor is not null
7996                mEditor.onTouchUpEvent(event);
7997
7998                handled = true;
7999            }
8000
8001            if (handled) {
8002                return true;
8003            }
8004        }
8005
8006        return superResult;
8007    }
8008
8009    @Override
8010    public boolean onGenericMotionEvent(MotionEvent event) {
8011        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8012            try {
8013                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
8014                    return true;
8015                }
8016            } catch (AbstractMethodError ex) {
8017                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
8018                // Ignore its absence in case third party applications implemented the
8019                // interface directly.
8020            }
8021        }
8022        return super.onGenericMotionEvent(event);
8023    }
8024
8025    /**
8026     * @return True iff this TextView contains a text that can be edited, or if this is
8027     * a selectable TextView.
8028     */
8029    boolean isTextEditable() {
8030        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
8031    }
8032
8033    /**
8034     * Returns true, only while processing a touch gesture, if the initial
8035     * touch down event caused focus to move to the text view and as a result
8036     * its selection changed.  Only valid while processing the touch gesture
8037     * of interest, in an editable text view.
8038     */
8039    public boolean didTouchFocusSelect() {
8040        return mEditor != null && mEditor.mTouchFocusSelected;
8041    }
8042
8043    @Override
8044    public void cancelLongPress() {
8045        super.cancelLongPress();
8046        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
8047    }
8048
8049    @Override
8050    public boolean onTrackballEvent(MotionEvent event) {
8051        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8052            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
8053                return true;
8054            }
8055        }
8056
8057        return super.onTrackballEvent(event);
8058    }
8059
8060    public void setScroller(Scroller s) {
8061        mScroller = s;
8062    }
8063
8064    @Override
8065    protected float getLeftFadingEdgeStrength() {
8066        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8067                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8068            if (mMarquee != null && !mMarquee.isStopped()) {
8069                final Marquee marquee = mMarquee;
8070                if (marquee.shouldDrawLeftFade()) {
8071                    final float scroll = marquee.getScroll();
8072                    return scroll / getHorizontalFadingEdgeLength();
8073                } else {
8074                    return 0.0f;
8075                }
8076            } else if (getLineCount() == 1) {
8077                final int layoutDirection = getLayoutDirection();
8078                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8079                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8080                    case Gravity.LEFT:
8081                        return 0.0f;
8082                    case Gravity.RIGHT:
8083                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
8084                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8085                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8086                    case Gravity.CENTER_HORIZONTAL:
8087                    case Gravity.FILL_HORIZONTAL:
8088                        final int textDirection = mLayout.getParagraphDirection(0);
8089                        if (textDirection == Layout.DIR_LEFT_TO_RIGHT) {
8090                            return 0.0f;
8091                        } else {
8092                            return (mLayout.getLineRight(0) - (mRight - mLeft) -
8093                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8094                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8095                        }
8096                }
8097            }
8098        }
8099        return super.getLeftFadingEdgeStrength();
8100    }
8101
8102    @Override
8103    protected float getRightFadingEdgeStrength() {
8104        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8105                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8106            if (mMarquee != null && !mMarquee.isStopped()) {
8107                final Marquee marquee = mMarquee;
8108                final float maxFadeScroll = marquee.getMaxFadeScroll();
8109                final float scroll = marquee.getScroll();
8110                return (maxFadeScroll - scroll) / getHorizontalFadingEdgeLength();
8111            } else if (getLineCount() == 1) {
8112                final int layoutDirection = getLayoutDirection();
8113                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8114                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8115                    case Gravity.LEFT:
8116                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
8117                                getCompoundPaddingRight();
8118                        final float lineWidth = mLayout.getLineWidth(0);
8119                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
8120                    case Gravity.RIGHT:
8121                        return 0.0f;
8122                    case Gravity.CENTER_HORIZONTAL:
8123                    case Gravity.FILL_HORIZONTAL:
8124                        final int textDirection = mLayout.getParagraphDirection(0);
8125                        if (textDirection == Layout.DIR_RIGHT_TO_LEFT) {
8126                            return 0.0f;
8127                        } else {
8128                            return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
8129                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
8130                                getHorizontalFadingEdgeLength();
8131                        }
8132                }
8133            }
8134        }
8135        return super.getRightFadingEdgeStrength();
8136    }
8137
8138    @Override
8139    protected int computeHorizontalScrollRange() {
8140        if (mLayout != null) {
8141            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
8142                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
8143        }
8144
8145        return super.computeHorizontalScrollRange();
8146    }
8147
8148    @Override
8149    protected int computeVerticalScrollRange() {
8150        if (mLayout != null)
8151            return mLayout.getHeight();
8152
8153        return super.computeVerticalScrollRange();
8154    }
8155
8156    @Override
8157    protected int computeVerticalScrollExtent() {
8158        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
8159    }
8160
8161    @Override
8162    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
8163        super.findViewsWithText(outViews, searched, flags);
8164        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
8165                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
8166            String searchedLowerCase = searched.toString().toLowerCase();
8167            String textLowerCase = mText.toString().toLowerCase();
8168            if (textLowerCase.contains(searchedLowerCase)) {
8169                outViews.add(this);
8170            }
8171        }
8172    }
8173
8174    public enum BufferType {
8175        NORMAL, SPANNABLE, EDITABLE,
8176    }
8177
8178    /**
8179     * Returns the TextView_textColor attribute from the TypedArray, if set, or
8180     * the TextAppearance_textColor from the TextView_textAppearance attribute,
8181     * if TextView_textColor was not set directly.
8182     *
8183     * @removed
8184     */
8185    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
8186        if (attrs == null) {
8187            // Preserve behavior prior to removal of this API.
8188            throw new NullPointerException();
8189        }
8190
8191        // It's not safe to use this method from apps. The parameter 'attrs'
8192        // must have been obtained using the TextView filter array which is not
8193        // available to the SDK. As such, we grab a default TypedArray with the
8194        // right filter instead here.
8195        final TypedArray a = context.obtainStyledAttributes(R.styleable.TextView);
8196        ColorStateList colors = a.getColorStateList(R.styleable.TextView_textColor);
8197        if (colors == null) {
8198            final int ap = a.getResourceId(R.styleable.TextView_textAppearance, 0);
8199            if (ap != 0) {
8200                final TypedArray appearance = context.obtainStyledAttributes(
8201                        ap, R.styleable.TextAppearance);
8202                colors = appearance.getColorStateList(R.styleable.TextAppearance_textColor);
8203                appearance.recycle();
8204            }
8205        }
8206        a.recycle();
8207
8208        return colors;
8209    }
8210
8211    /**
8212     * Returns the default color from the TextView_textColor attribute from the
8213     * AttributeSet, if set, or the default color from the
8214     * TextAppearance_textColor from the TextView_textAppearance attribute, if
8215     * TextView_textColor was not set directly.
8216     *
8217     * @removed
8218     */
8219    public static int getTextColor(Context context, TypedArray attrs, int def) {
8220        final ColorStateList colors = getTextColors(context, attrs);
8221        if (colors == null) {
8222            return def;
8223        } else {
8224            return colors.getDefaultColor();
8225        }
8226    }
8227
8228    @Override
8229    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
8230        final int filteredMetaState = event.getMetaState() & ~KeyEvent.META_CTRL_MASK;
8231        if (KeyEvent.metaStateHasNoModifiers(filteredMetaState)) {
8232            switch (keyCode) {
8233            case KeyEvent.KEYCODE_A:
8234                if (canSelectText()) {
8235                    return onTextContextMenuItem(ID_SELECT_ALL);
8236                }
8237                break;
8238            case KeyEvent.KEYCODE_X:
8239                if (canCut()) {
8240                    return onTextContextMenuItem(ID_CUT);
8241                }
8242                break;
8243            case KeyEvent.KEYCODE_C:
8244                if (canCopy()) {
8245                    return onTextContextMenuItem(ID_COPY);
8246                }
8247                break;
8248            case KeyEvent.KEYCODE_V:
8249                if (canPaste()) {
8250                    return onTextContextMenuItem(ID_PASTE);
8251                }
8252                break;
8253            }
8254        }
8255        return super.onKeyShortcut(keyCode, event);
8256    }
8257
8258    /**
8259     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
8260     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
8261     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
8262     * sufficient.
8263     */
8264    private boolean canSelectText() {
8265        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
8266    }
8267
8268    /**
8269     * Test based on the <i>intrinsic</i> charateristics of the TextView.
8270     * The text must be spannable and the movement method must allow for arbitary selection.
8271     *
8272     * See also {@link #canSelectText()}.
8273     */
8274    boolean textCanBeSelected() {
8275        // prepareCursorController() relies on this method.
8276        // If you change this condition, make sure prepareCursorController is called anywhere
8277        // the value of this condition might be changed.
8278        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
8279        return isTextEditable() ||
8280                (isTextSelectable() && mText instanceof Spannable && isEnabled());
8281    }
8282
8283    private Locale getTextServicesLocale(boolean allowNullLocale) {
8284        // Start fetching the text services locale asynchronously.
8285        updateTextServicesLocaleAsync();
8286        // If !allowNullLocale and there is no cached text services locale, just return the default
8287        // locale.
8288        return (mCurrentSpellCheckerLocaleCache == null && !allowNullLocale) ? Locale.getDefault()
8289                : mCurrentSpellCheckerLocaleCache;
8290    }
8291
8292    /**
8293     * This is a temporary method. Future versions may support multi-locale text.
8294     * Caveat: This method may not return the latest text services locale, but this should be
8295     * acceptable and it's more important to make this method asynchronous.
8296     *
8297     * @return The locale that should be used for a word iterator
8298     * in this TextView, based on the current spell checker settings,
8299     * the current IME's locale, or the system default locale.
8300     * Please note that a word iterator in this TextView is different from another word iterator
8301     * used by SpellChecker.java of TextView. This method should be used for the former.
8302     * @hide
8303     */
8304    // TODO: Support multi-locale
8305    // TODO: Update the text services locale immediately after the keyboard locale is switched
8306    // by catching intent of keyboard switch event
8307    public Locale getTextServicesLocale() {
8308        return getTextServicesLocale(false /* allowNullLocale */);
8309    }
8310
8311    /**
8312     * This is a temporary method. Future versions may support multi-locale text.
8313     * Caveat: This method may not return the latest spell checker locale, but this should be
8314     * acceptable and it's more important to make this method asynchronous.
8315     *
8316     * @return The locale that should be used for a spell checker in this TextView,
8317     * based on the current spell checker settings, the current IME's locale, or the system default
8318     * locale.
8319     * @hide
8320     */
8321    public Locale getSpellCheckerLocale() {
8322        return getTextServicesLocale(true /* allowNullLocale */);
8323    }
8324
8325    private void updateTextServicesLocaleAsync() {
8326        // AsyncTask.execute() uses a serial executor which means we don't have
8327        // to lock around updateTextServicesLocaleLocked() to prevent it from
8328        // being executed n times in parallel.
8329        AsyncTask.execute(new Runnable() {
8330            @Override
8331            public void run() {
8332                updateTextServicesLocaleLocked();
8333            }
8334        });
8335    }
8336
8337    private void updateTextServicesLocaleLocked() {
8338        final TextServicesManager textServicesManager = (TextServicesManager)
8339                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
8340        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
8341        final Locale locale;
8342        if (subtype != null) {
8343            locale = SpellCheckerSubtype.constructLocaleFromString(subtype.getLocale());
8344        } else {
8345            locale = null;
8346        }
8347        mCurrentSpellCheckerLocaleCache = locale;
8348    }
8349
8350    void onLocaleChanged() {
8351        // Will be re-created on demand in getWordIterator with the proper new locale
8352        mEditor.mWordIterator = null;
8353    }
8354
8355    /**
8356     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
8357     * Made available to achieve a consistent behavior.
8358     * @hide
8359     */
8360    public WordIterator getWordIterator() {
8361        if (mEditor != null) {
8362            return mEditor.getWordIterator();
8363        } else {
8364            return null;
8365        }
8366    }
8367
8368    @Override
8369    public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
8370        super.onPopulateAccessibilityEvent(event);
8371
8372        final boolean isPassword = hasPasswordTransformationMethod();
8373        if (!isPassword || shouldSpeakPasswordsForAccessibility()) {
8374            final CharSequence text = getTextForAccessibility();
8375            if (!TextUtils.isEmpty(text)) {
8376                event.getText().add(text);
8377            }
8378        }
8379    }
8380
8381    /**
8382     * @return true if the user has explicitly allowed accessibility services
8383     * to speak passwords.
8384     */
8385    private boolean shouldSpeakPasswordsForAccessibility() {
8386        return (Settings.Secure.getInt(mContext.getContentResolver(),
8387                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0) == 1);
8388    }
8389
8390    @Override
8391    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
8392        super.onInitializeAccessibilityEvent(event);
8393
8394        event.setClassName(TextView.class.getName());
8395        final boolean isPassword = hasPasswordTransformationMethod();
8396        event.setPassword(isPassword);
8397
8398        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
8399            event.setFromIndex(Selection.getSelectionStart(mText));
8400            event.setToIndex(Selection.getSelectionEnd(mText));
8401            event.setItemCount(mText.length());
8402        }
8403    }
8404
8405    @Override
8406    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
8407        super.onInitializeAccessibilityNodeInfo(info);
8408
8409        info.setClassName(TextView.class.getName());
8410        final boolean isPassword = hasPasswordTransformationMethod();
8411        info.setPassword(isPassword);
8412
8413        if (!isPassword || shouldSpeakPasswordsForAccessibility()) {
8414            info.setText(getTextForAccessibility());
8415        }
8416
8417        if (mBufferType == BufferType.EDITABLE) {
8418            info.setEditable(true);
8419        }
8420
8421        if (mEditor != null) {
8422            info.setInputType(mEditor.mInputType);
8423
8424            if (mEditor.mError != null) {
8425                info.setContentInvalid(true);
8426                info.setError(mEditor.mError);
8427            }
8428        }
8429
8430        if (!TextUtils.isEmpty(mText)) {
8431            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
8432            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
8433            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
8434                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
8435                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
8436                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
8437                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
8438        }
8439
8440        if (isFocused()) {
8441            if (canSelectText()) {
8442                info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
8443            }
8444            if (canCopy()) {
8445                info.addAction(AccessibilityNodeInfo.ACTION_COPY);
8446            }
8447            if (canPaste()) {
8448                info.addAction(AccessibilityNodeInfo.ACTION_PASTE);
8449            }
8450            if (canCut()) {
8451                info.addAction(AccessibilityNodeInfo.ACTION_CUT);
8452            }
8453        }
8454
8455        // Check for known input filter types.
8456        final int numFilters = mFilters.length;
8457        for (int i = 0; i < numFilters; i++) {
8458            final InputFilter filter = mFilters[i];
8459            if (filter instanceof InputFilter.LengthFilter) {
8460                info.setMaxTextLength(((InputFilter.LengthFilter) filter).getMax());
8461            }
8462        }
8463
8464        if (!isSingleLine()) {
8465            info.setMultiLine(true);
8466        }
8467    }
8468
8469    @Override
8470    public boolean performAccessibilityAction(int action, Bundle arguments) {
8471        switch (action) {
8472            case AccessibilityNodeInfo.ACTION_CLICK: {
8473                boolean handled = false;
8474
8475                // Simulate View.onTouchEvent for an ACTION_UP event.
8476                if (isClickable() || isLongClickable()) {
8477                    if (isFocusable() && !isFocused()) {
8478                        requestFocus();
8479                    }
8480
8481                    performClick();
8482                    handled = true;
8483                }
8484
8485                // Simulate TextView.onTouchEvent for an ACTION_UP event.
8486                if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
8487                        && mText instanceof Spannable && mLayout != null
8488                        && (isTextEditable() || isTextSelectable()) && isFocused()) {
8489                    // Show the IME, except when selecting in read-only text.
8490                    final InputMethodManager imm = InputMethodManager.peekInstance();
8491                    viewClicked(imm);
8492                    if (!isTextSelectable() && mEditor.mShowSoftInputOnFocus && imm != null) {
8493                        handled |= imm.showSoftInput(this, 0);
8494                    }
8495                }
8496
8497                return handled;
8498            }
8499            case AccessibilityNodeInfo.ACTION_COPY: {
8500                if (isFocused() && canCopy()) {
8501                    if (onTextContextMenuItem(ID_COPY)) {
8502                        return true;
8503                    }
8504                }
8505            } return false;
8506            case AccessibilityNodeInfo.ACTION_PASTE: {
8507                if (isFocused() && canPaste()) {
8508                    if (onTextContextMenuItem(ID_PASTE)) {
8509                        return true;
8510                    }
8511                }
8512            } return false;
8513            case AccessibilityNodeInfo.ACTION_CUT: {
8514                if (isFocused() && canCut()) {
8515                    if (onTextContextMenuItem(ID_CUT)) {
8516                        return true;
8517                    }
8518                }
8519            } return false;
8520            case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
8521                if (isFocused() && canSelectText()) {
8522                    ensureIterableTextForAccessibilitySelectable();
8523                    CharSequence text = getIterableTextForAccessibility();
8524                    if (text == null) {
8525                        return false;
8526                    }
8527                    final int start = (arguments != null) ? arguments.getInt(
8528                            AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
8529                    final int end = (arguments != null) ? arguments.getInt(
8530                            AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
8531                    if ((getSelectionStart() != start || getSelectionEnd() != end)) {
8532                        // No arguments clears the selection.
8533                        if (start == end && end == -1) {
8534                            Selection.removeSelection((Spannable) text);
8535                            return true;
8536                        }
8537                        if (start >= 0 && start <= end && end <= text.length()) {
8538                            Selection.setSelection((Spannable) text, start, end);
8539                            // Make sure selection mode is engaged.
8540                            if (mEditor != null) {
8541                                mEditor.startSelectionActionMode();
8542                            }
8543                            return true;
8544                        }
8545                    }
8546                }
8547            } return false;
8548            case AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY:
8549            case AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY: {
8550                ensureIterableTextForAccessibilitySelectable();
8551                return super.performAccessibilityAction(action, arguments);
8552            }
8553            default: {
8554                return super.performAccessibilityAction(action, arguments);
8555            }
8556        }
8557    }
8558
8559    @Override
8560    public void sendAccessibilityEvent(int eventType) {
8561        // Do not send scroll events since first they are not interesting for
8562        // accessibility and second such events a generated too frequently.
8563        // For details see the implementation of bringTextIntoView().
8564        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
8565            return;
8566        }
8567        super.sendAccessibilityEvent(eventType);
8568    }
8569
8570    /**
8571     * Gets the text reported for accessibility purposes.
8572     *
8573     * @return The accessibility text.
8574     *
8575     * @hide
8576     */
8577    public CharSequence getTextForAccessibility() {
8578        CharSequence text = getText();
8579        if (TextUtils.isEmpty(text)) {
8580            text = getHint();
8581        }
8582        return text;
8583    }
8584
8585    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
8586            int fromIndex, int removedCount, int addedCount) {
8587        AccessibilityEvent event =
8588            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
8589        event.setFromIndex(fromIndex);
8590        event.setRemovedCount(removedCount);
8591        event.setAddedCount(addedCount);
8592        event.setBeforeText(beforeText);
8593        sendAccessibilityEventUnchecked(event);
8594    }
8595
8596    /**
8597     * Returns whether this text view is a current input method target.  The
8598     * default implementation just checks with {@link InputMethodManager}.
8599     */
8600    public boolean isInputMethodTarget() {
8601        InputMethodManager imm = InputMethodManager.peekInstance();
8602        return imm != null && imm.isActive(this);
8603    }
8604
8605    static final int ID_SELECT_ALL = android.R.id.selectAll;
8606    static final int ID_CUT = android.R.id.cut;
8607    static final int ID_COPY = android.R.id.copy;
8608    static final int ID_PASTE = android.R.id.paste;
8609
8610    /**
8611     * Called when a context menu option for the text view is selected.  Currently
8612     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
8613     * {@link android.R.id#copy} or {@link android.R.id#paste}.
8614     *
8615     * @return true if the context menu item action was performed.
8616     */
8617    public boolean onTextContextMenuItem(int id) {
8618        int min = 0;
8619        int max = mText.length();
8620
8621        if (isFocused()) {
8622            final int selStart = getSelectionStart();
8623            final int selEnd = getSelectionEnd();
8624
8625            min = Math.max(0, Math.min(selStart, selEnd));
8626            max = Math.max(0, Math.max(selStart, selEnd));
8627        }
8628
8629        switch (id) {
8630            case ID_SELECT_ALL:
8631                // This does not enter text selection mode. Text is highlighted, so that it can be
8632                // bulk edited, like selectAllOnFocus does. Returns true even if text is empty.
8633                selectAllText();
8634                return true;
8635
8636            case ID_PASTE:
8637                paste(min, max);
8638                return true;
8639
8640            case ID_CUT:
8641                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
8642                deleteText_internal(min, max);
8643                stopSelectionActionMode();
8644                return true;
8645
8646            case ID_COPY:
8647                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
8648                stopSelectionActionMode();
8649                return true;
8650        }
8651        return false;
8652    }
8653
8654    CharSequence getTransformedText(int start, int end) {
8655        return removeSuggestionSpans(mTransformed.subSequence(start, end));
8656    }
8657
8658    @Override
8659    public boolean performLongClick() {
8660        boolean handled = false;
8661
8662        if (super.performLongClick()) {
8663            handled = true;
8664        }
8665
8666        if (mEditor != null) {
8667            handled |= mEditor.performLongClick(handled);
8668        }
8669
8670        if (handled) {
8671            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
8672            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
8673        }
8674
8675        return handled;
8676    }
8677
8678    @Override
8679    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
8680        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
8681        if (mEditor != null) {
8682            mEditor.onScrollChanged();
8683        }
8684    }
8685
8686    /**
8687     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
8688     * by the IME or by the spell checker as the user types. This is done by adding
8689     * {@link SuggestionSpan}s to the text.
8690     *
8691     * When suggestions are enabled (default), this list of suggestions will be displayed when the
8692     * user asks for them on these parts of the text. This value depends on the inputType of this
8693     * TextView.
8694     *
8695     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
8696     *
8697     * In addition, the type variation must be one of
8698     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
8699     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
8700     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
8701     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
8702     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
8703     *
8704     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
8705     *
8706     * @return true if the suggestions popup window is enabled, based on the inputType.
8707     */
8708    public boolean isSuggestionsEnabled() {
8709        if (mEditor == null) return false;
8710        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
8711            return false;
8712        }
8713        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
8714
8715        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
8716        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
8717                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
8718                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
8719                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
8720                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
8721    }
8722
8723    /**
8724     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
8725     * selection is initiated in this View.
8726     *
8727     * The standard implementation populates the menu with a subset of Select All, Cut, Copy and
8728     * Paste actions, depending on what this View supports.
8729     *
8730     * A custom implementation can add new entries in the default menu in its
8731     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The
8732     * default actions can also be removed from the menu using {@link Menu#removeItem(int)} and
8733     * passing {@link android.R.id#selectAll}, {@link android.R.id#cut}, {@link android.R.id#copy}
8734     * or {@link android.R.id#paste} ids as parameters.
8735     *
8736     * Returning false from
8737     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will prevent
8738     * the action mode from being started.
8739     *
8740     * Action click events should be handled by the custom implementation of
8741     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}.
8742     *
8743     * Note that text selection mode is not started when a TextView receives focus and the
8744     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
8745     * that case, to allow for quick replacement.
8746     */
8747    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
8748        createEditorIfNeeded();
8749        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
8750    }
8751
8752    /**
8753     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
8754     *
8755     * @return The current custom selection callback.
8756     */
8757    public ActionMode.Callback getCustomSelectionActionModeCallback() {
8758        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
8759    }
8760
8761    /**
8762     * @hide
8763     */
8764    protected void stopSelectionActionMode() {
8765        mEditor.stopSelectionActionMode();
8766    }
8767
8768    boolean canCut() {
8769        if (hasPasswordTransformationMethod()) {
8770            return false;
8771        }
8772
8773        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
8774                mEditor.mKeyListener != null) {
8775            return true;
8776        }
8777
8778        return false;
8779    }
8780
8781    boolean canCopy() {
8782        if (hasPasswordTransformationMethod()) {
8783            return false;
8784        }
8785
8786        if (mText.length() > 0 && hasSelection() && mEditor != null) {
8787            return true;
8788        }
8789
8790        return false;
8791    }
8792
8793    boolean canPaste() {
8794        return (mText instanceof Editable &&
8795                mEditor != null && mEditor.mKeyListener != null &&
8796                getSelectionStart() >= 0 &&
8797                getSelectionEnd() >= 0 &&
8798                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
8799                hasPrimaryClip());
8800    }
8801
8802    boolean selectAllText() {
8803        final int length = mText.length();
8804        Selection.setSelection((Spannable) mText, 0, length);
8805        return length > 0;
8806    }
8807
8808    /**
8809     * Paste clipboard content between min and max positions.
8810     */
8811    private void paste(int min, int max) {
8812        ClipboardManager clipboard =
8813            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
8814        ClipData clip = clipboard.getPrimaryClip();
8815        if (clip != null) {
8816            boolean didFirst = false;
8817            for (int i=0; i<clip.getItemCount(); i++) {
8818                CharSequence paste = clip.getItemAt(i).coerceToStyledText(getContext());
8819                if (paste != null) {
8820                    if (!didFirst) {
8821                        Selection.setSelection((Spannable) mText, max);
8822                        ((Editable) mText).replace(min, max, paste);
8823                        didFirst = true;
8824                    } else {
8825                        ((Editable) mText).insert(getSelectionEnd(), "\n");
8826                        ((Editable) mText).insert(getSelectionEnd(), paste);
8827                    }
8828                }
8829            }
8830            stopSelectionActionMode();
8831            LAST_CUT_OR_COPY_TIME = 0;
8832        }
8833    }
8834
8835    private void setPrimaryClip(ClipData clip) {
8836        ClipboardManager clipboard = (ClipboardManager) getContext().
8837                getSystemService(Context.CLIPBOARD_SERVICE);
8838        clipboard.setPrimaryClip(clip);
8839        LAST_CUT_OR_COPY_TIME = SystemClock.uptimeMillis();
8840    }
8841
8842    /**
8843     * Get the character offset closest to the specified absolute position. A typical use case is to
8844     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
8845     *
8846     * @param x The horizontal absolute position of a point on screen
8847     * @param y The vertical absolute position of a point on screen
8848     * @return the character offset for the character whose position is closest to the specified
8849     *  position. Returns -1 if there is no layout.
8850     */
8851    public int getOffsetForPosition(float x, float y) {
8852        if (getLayout() == null) return -1;
8853        final int line = getLineAtCoordinate(y);
8854        final int offset = getOffsetAtCoordinate(line, x);
8855        return offset;
8856    }
8857
8858    float convertToLocalHorizontalCoordinate(float x) {
8859        x -= getTotalPaddingLeft();
8860        // Clamp the position to inside of the view.
8861        x = Math.max(0.0f, x);
8862        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
8863        x += getScrollX();
8864        return x;
8865    }
8866
8867    int getLineAtCoordinate(float y) {
8868        y -= getTotalPaddingTop();
8869        // Clamp the position to inside of the view.
8870        y = Math.max(0.0f, y);
8871        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
8872        y += getScrollY();
8873        return getLayout().getLineForVertical((int) y);
8874    }
8875
8876    private int getOffsetAtCoordinate(int line, float x) {
8877        x = convertToLocalHorizontalCoordinate(x);
8878        return getLayout().getOffsetForHorizontal(line, x);
8879    }
8880
8881    @Override
8882    public boolean onDragEvent(DragEvent event) {
8883        switch (event.getAction()) {
8884            case DragEvent.ACTION_DRAG_STARTED:
8885                return mEditor != null && mEditor.hasInsertionController();
8886
8887            case DragEvent.ACTION_DRAG_ENTERED:
8888                TextView.this.requestFocus();
8889                return true;
8890
8891            case DragEvent.ACTION_DRAG_LOCATION:
8892                final int offset = getOffsetForPosition(event.getX(), event.getY());
8893                Selection.setSelection((Spannable)mText, offset);
8894                return true;
8895
8896            case DragEvent.ACTION_DROP:
8897                if (mEditor != null) mEditor.onDrop(event);
8898                return true;
8899
8900            case DragEvent.ACTION_DRAG_ENDED:
8901            case DragEvent.ACTION_DRAG_EXITED:
8902            default:
8903                return true;
8904        }
8905    }
8906
8907    boolean isInBatchEditMode() {
8908        if (mEditor == null) return false;
8909        final Editor.InputMethodState ims = mEditor.mInputMethodState;
8910        if (ims != null) {
8911            return ims.mBatchEditNesting > 0;
8912        }
8913        return mEditor.mInBatchEditControllers;
8914    }
8915
8916    @Override
8917    public void onRtlPropertiesChanged(int layoutDirection) {
8918        super.onRtlPropertiesChanged(layoutDirection);
8919
8920        mTextDir = getTextDirectionHeuristic();
8921
8922        if (mLayout != null) {
8923            checkForRelayout();
8924        }
8925    }
8926
8927    TextDirectionHeuristic getTextDirectionHeuristic() {
8928        if (hasPasswordTransformationMethod()) {
8929            // passwords fields should be LTR
8930            return TextDirectionHeuristics.LTR;
8931        }
8932
8933        // Always need to resolve layout direction first
8934        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
8935
8936        // Now, we can select the heuristic
8937        switch (getTextDirection()) {
8938            default:
8939            case TEXT_DIRECTION_FIRST_STRONG:
8940                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
8941                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
8942            case TEXT_DIRECTION_ANY_RTL:
8943                return TextDirectionHeuristics.ANYRTL_LTR;
8944            case TEXT_DIRECTION_LTR:
8945                return TextDirectionHeuristics.LTR;
8946            case TEXT_DIRECTION_RTL:
8947                return TextDirectionHeuristics.RTL;
8948            case TEXT_DIRECTION_LOCALE:
8949                return TextDirectionHeuristics.LOCALE;
8950        }
8951    }
8952
8953    /**
8954     * @hide
8955     */
8956    @Override
8957    public void onResolveDrawables(int layoutDirection) {
8958        // No need to resolve twice
8959        if (mLastLayoutDirection == layoutDirection) {
8960            return;
8961        }
8962        mLastLayoutDirection = layoutDirection;
8963
8964        // Resolve drawables
8965        if (mDrawables != null) {
8966            mDrawables.resolveWithLayoutDirection(layoutDirection);
8967        }
8968    }
8969
8970    /**
8971     * @hide
8972     */
8973    protected void resetResolvedDrawables() {
8974        super.resetResolvedDrawables();
8975        mLastLayoutDirection = -1;
8976    }
8977
8978    /**
8979     * @hide
8980     */
8981    protected void viewClicked(InputMethodManager imm) {
8982        if (imm != null) {
8983            imm.viewClicked(this);
8984        }
8985    }
8986
8987    /**
8988     * Deletes the range of text [start, end[.
8989     * @hide
8990     */
8991    protected void deleteText_internal(int start, int end) {
8992        ((Editable) mText).delete(start, end);
8993    }
8994
8995    /**
8996     * Replaces the range of text [start, end[ by replacement text
8997     * @hide
8998     */
8999    protected void replaceText_internal(int start, int end, CharSequence text) {
9000        ((Editable) mText).replace(start, end, text);
9001    }
9002
9003    /**
9004     * Sets a span on the specified range of text
9005     * @hide
9006     */
9007    protected void setSpan_internal(Object span, int start, int end, int flags) {
9008        ((Editable) mText).setSpan(span, start, end, flags);
9009    }
9010
9011    /**
9012     * Moves the cursor to the specified offset position in text
9013     * @hide
9014     */
9015    protected void setCursorPosition_internal(int start, int end) {
9016        Selection.setSelection(((Editable) mText), start, end);
9017    }
9018
9019    /**
9020     * An Editor should be created as soon as any of the editable-specific fields (grouped
9021     * inside the Editor object) is assigned to a non-default value.
9022     * This method will create the Editor if needed.
9023     *
9024     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
9025     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
9026     * Editor for backward compatibility, as soon as one of these fields is assigned.
9027     *
9028     * Also note that for performance reasons, the mEditor is created when needed, but not
9029     * reset when no more edit-specific fields are needed.
9030     */
9031    private void createEditorIfNeeded() {
9032        if (mEditor == null) {
9033            mEditor = new Editor(this);
9034        }
9035    }
9036
9037    /**
9038     * @hide
9039     */
9040    @Override
9041    public CharSequence getIterableTextForAccessibility() {
9042        return mText;
9043    }
9044
9045    private void ensureIterableTextForAccessibilitySelectable() {
9046        if (!(mText instanceof Spannable)) {
9047            setText(mText, BufferType.SPANNABLE);
9048        }
9049    }
9050
9051    /**
9052     * @hide
9053     */
9054    @Override
9055    public TextSegmentIterator getIteratorForGranularity(int granularity) {
9056        switch (granularity) {
9057            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
9058                Spannable text = (Spannable) getIterableTextForAccessibility();
9059                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9060                    AccessibilityIterators.LineTextSegmentIterator iterator =
9061                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
9062                    iterator.initialize(text, getLayout());
9063                    return iterator;
9064                }
9065            } break;
9066            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
9067                Spannable text = (Spannable) getIterableTextForAccessibility();
9068                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9069                    AccessibilityIterators.PageTextSegmentIterator iterator =
9070                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
9071                    iterator.initialize(this);
9072                    return iterator;
9073                }
9074            } break;
9075        }
9076        return super.getIteratorForGranularity(granularity);
9077    }
9078
9079    /**
9080     * @hide
9081     */
9082    @Override
9083    public int getAccessibilitySelectionStart() {
9084        return getSelectionStart();
9085    }
9086
9087    /**
9088     * @hide
9089     */
9090    public boolean isAccessibilitySelectionExtendable() {
9091        return true;
9092    }
9093
9094    /**
9095     * @hide
9096     */
9097    @Override
9098    public int getAccessibilitySelectionEnd() {
9099        return getSelectionEnd();
9100    }
9101
9102    /**
9103     * @hide
9104     */
9105    @Override
9106    public void setAccessibilitySelection(int start, int end) {
9107        if (getAccessibilitySelectionStart() == start
9108                && getAccessibilitySelectionEnd() == end) {
9109            return;
9110        }
9111        // Hide all selection controllers used for adjusting selection
9112        // since we are doing so explicitlty by other means and these
9113        // controllers interact with how selection behaves.
9114        if (mEditor != null) {
9115            mEditor.hideControllers();
9116        }
9117        CharSequence text = getIterableTextForAccessibility();
9118        if (Math.min(start, end) >= 0 && Math.max(start, end) <= text.length()) {
9119            Selection.setSelection((Spannable) text, start, end);
9120        } else {
9121            Selection.removeSelection((Spannable) text);
9122        }
9123    }
9124
9125    /**
9126     * User interface state that is stored by TextView for implementing
9127     * {@link View#onSaveInstanceState}.
9128     */
9129    public static class SavedState extends BaseSavedState {
9130        int selStart;
9131        int selEnd;
9132        CharSequence text;
9133        boolean frozenWithFocus;
9134        CharSequence error;
9135
9136        SavedState(Parcelable superState) {
9137            super(superState);
9138        }
9139
9140        @Override
9141        public void writeToParcel(Parcel out, int flags) {
9142            super.writeToParcel(out, flags);
9143            out.writeInt(selStart);
9144            out.writeInt(selEnd);
9145            out.writeInt(frozenWithFocus ? 1 : 0);
9146            TextUtils.writeToParcel(text, out, flags);
9147
9148            if (error == null) {
9149                out.writeInt(0);
9150            } else {
9151                out.writeInt(1);
9152                TextUtils.writeToParcel(error, out, flags);
9153            }
9154        }
9155
9156        @Override
9157        public String toString() {
9158            String str = "TextView.SavedState{"
9159                    + Integer.toHexString(System.identityHashCode(this))
9160                    + " start=" + selStart + " end=" + selEnd;
9161            if (text != null) {
9162                str += " text=" + text;
9163            }
9164            return str + "}";
9165        }
9166
9167        @SuppressWarnings("hiding")
9168        public static final Parcelable.Creator<SavedState> CREATOR
9169                = new Parcelable.Creator<SavedState>() {
9170            public SavedState createFromParcel(Parcel in) {
9171                return new SavedState(in);
9172            }
9173
9174            public SavedState[] newArray(int size) {
9175                return new SavedState[size];
9176            }
9177        };
9178
9179        private SavedState(Parcel in) {
9180            super(in);
9181            selStart = in.readInt();
9182            selEnd = in.readInt();
9183            frozenWithFocus = (in.readInt() != 0);
9184            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
9185
9186            if (in.readInt() != 0) {
9187                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
9188            }
9189        }
9190    }
9191
9192    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
9193        private char[] mChars;
9194        private int mStart, mLength;
9195
9196        public CharWrapper(char[] chars, int start, int len) {
9197            mChars = chars;
9198            mStart = start;
9199            mLength = len;
9200        }
9201
9202        /* package */ void set(char[] chars, int start, int len) {
9203            mChars = chars;
9204            mStart = start;
9205            mLength = len;
9206        }
9207
9208        public int length() {
9209            return mLength;
9210        }
9211
9212        public char charAt(int off) {
9213            return mChars[off + mStart];
9214        }
9215
9216        @Override
9217        public String toString() {
9218            return new String(mChars, mStart, mLength);
9219        }
9220
9221        public CharSequence subSequence(int start, int end) {
9222            if (start < 0 || end < 0 || start > mLength || end > mLength) {
9223                throw new IndexOutOfBoundsException(start + ", " + end);
9224            }
9225
9226            return new String(mChars, start + mStart, end - start);
9227        }
9228
9229        public void getChars(int start, int end, char[] buf, int off) {
9230            if (start < 0 || end < 0 || start > mLength || end > mLength) {
9231                throw new IndexOutOfBoundsException(start + ", " + end);
9232            }
9233
9234            System.arraycopy(mChars, start + mStart, buf, off, end - start);
9235        }
9236
9237        public void drawText(Canvas c, int start, int end,
9238                             float x, float y, Paint p) {
9239            c.drawText(mChars, start + mStart, end - start, x, y, p);
9240        }
9241
9242        public void drawTextRun(Canvas c, int start, int end,
9243                int contextStart, int contextEnd, float x, float y, boolean isRtl, Paint p) {
9244            int count = end - start;
9245            int contextCount = contextEnd - contextStart;
9246            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
9247                    contextCount, x, y, isRtl, p);
9248        }
9249
9250        public float measureText(int start, int end, Paint p) {
9251            return p.measureText(mChars, start + mStart, end - start);
9252        }
9253
9254        public int getTextWidths(int start, int end, float[] widths, Paint p) {
9255            return p.getTextWidths(mChars, start + mStart, end - start, widths);
9256        }
9257
9258        public float getTextRunAdvances(int start, int end, int contextStart,
9259                int contextEnd, boolean isRtl, float[] advances, int advancesIndex,
9260                Paint p) {
9261            int count = end - start;
9262            int contextCount = contextEnd - contextStart;
9263            return p.getTextRunAdvances(mChars, start + mStart, count,
9264                    contextStart + mStart, contextCount, isRtl, advances,
9265                    advancesIndex);
9266        }
9267
9268        public int getTextRunCursor(int contextStart, int contextEnd, int dir,
9269                int offset, int cursorOpt, Paint p) {
9270            int contextCount = contextEnd - contextStart;
9271            return p.getTextRunCursor(mChars, contextStart + mStart,
9272                    contextCount, dir, offset + mStart, cursorOpt);
9273        }
9274    }
9275
9276    private static final class Marquee {
9277        // TODO: Add an option to configure this
9278        private static final float MARQUEE_DELTA_MAX = 0.07f;
9279        private static final int MARQUEE_DELAY = 1200;
9280        private static final int MARQUEE_RESTART_DELAY = 1200;
9281        private static final int MARQUEE_DP_PER_SECOND = 30;
9282
9283        private static final byte MARQUEE_STOPPED = 0x0;
9284        private static final byte MARQUEE_STARTING = 0x1;
9285        private static final byte MARQUEE_RUNNING = 0x2;
9286
9287        private final WeakReference<TextView> mView;
9288        private final Choreographer mChoreographer;
9289
9290        private byte mStatus = MARQUEE_STOPPED;
9291        private final float mPixelsPerSecond;
9292        private float mMaxScroll;
9293        private float mMaxFadeScroll;
9294        private float mGhostStart;
9295        private float mGhostOffset;
9296        private float mFadeStop;
9297        private int mRepeatLimit;
9298
9299        private float mScroll;
9300        private long mLastAnimationMs;
9301
9302        Marquee(TextView v) {
9303            final float density = v.getContext().getResources().getDisplayMetrics().density;
9304            mPixelsPerSecond = MARQUEE_DP_PER_SECOND * density;
9305            mView = new WeakReference<TextView>(v);
9306            mChoreographer = Choreographer.getInstance();
9307        }
9308
9309        private Choreographer.FrameCallback mTickCallback = new Choreographer.FrameCallback() {
9310            @Override
9311            public void doFrame(long frameTimeNanos) {
9312                tick();
9313            }
9314        };
9315
9316        private Choreographer.FrameCallback mStartCallback = new Choreographer.FrameCallback() {
9317            @Override
9318            public void doFrame(long frameTimeNanos) {
9319                mStatus = MARQUEE_RUNNING;
9320                mLastAnimationMs = mChoreographer.getFrameTime();
9321                tick();
9322            }
9323        };
9324
9325        private Choreographer.FrameCallback mRestartCallback = new Choreographer.FrameCallback() {
9326            @Override
9327            public void doFrame(long frameTimeNanos) {
9328                if (mStatus == MARQUEE_RUNNING) {
9329                    if (mRepeatLimit >= 0) {
9330                        mRepeatLimit--;
9331                    }
9332                    start(mRepeatLimit);
9333                }
9334            }
9335        };
9336
9337        void tick() {
9338            if (mStatus != MARQUEE_RUNNING) {
9339                return;
9340            }
9341
9342            mChoreographer.removeFrameCallback(mTickCallback);
9343
9344            final TextView textView = mView.get();
9345            if (textView != null && (textView.isFocused() || textView.isSelected())) {
9346                long currentMs = mChoreographer.getFrameTime();
9347                long deltaMs = currentMs - mLastAnimationMs;
9348                mLastAnimationMs = currentMs;
9349                float deltaPx = deltaMs / 1000f * mPixelsPerSecond;
9350                mScroll += deltaPx;
9351                if (mScroll > mMaxScroll) {
9352                    mScroll = mMaxScroll;
9353                    mChoreographer.postFrameCallbackDelayed(mRestartCallback, MARQUEE_DELAY);
9354                } else {
9355                    mChoreographer.postFrameCallback(mTickCallback);
9356                }
9357                textView.invalidate();
9358            }
9359        }
9360
9361        void stop() {
9362            mStatus = MARQUEE_STOPPED;
9363            mChoreographer.removeFrameCallback(mStartCallback);
9364            mChoreographer.removeFrameCallback(mRestartCallback);
9365            mChoreographer.removeFrameCallback(mTickCallback);
9366            resetScroll();
9367        }
9368
9369        private void resetScroll() {
9370            mScroll = 0.0f;
9371            final TextView textView = mView.get();
9372            if (textView != null) textView.invalidate();
9373        }
9374
9375        void start(int repeatLimit) {
9376            if (repeatLimit == 0) {
9377                stop();
9378                return;
9379            }
9380            mRepeatLimit = repeatLimit;
9381            final TextView textView = mView.get();
9382            if (textView != null && textView.mLayout != null) {
9383                mStatus = MARQUEE_STARTING;
9384                mScroll = 0.0f;
9385                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
9386                        textView.getCompoundPaddingRight();
9387                final float lineWidth = textView.mLayout.getLineWidth(0);
9388                final float gap = textWidth / 3.0f;
9389                mGhostStart = lineWidth - textWidth + gap;
9390                mMaxScroll = mGhostStart + textWidth;
9391                mGhostOffset = lineWidth + gap;
9392                mFadeStop = lineWidth + textWidth / 6.0f;
9393                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
9394
9395                textView.invalidate();
9396                mChoreographer.postFrameCallback(mStartCallback);
9397            }
9398        }
9399
9400        float getGhostOffset() {
9401            return mGhostOffset;
9402        }
9403
9404        float getScroll() {
9405            return mScroll;
9406        }
9407
9408        float getMaxFadeScroll() {
9409            return mMaxFadeScroll;
9410        }
9411
9412        boolean shouldDrawLeftFade() {
9413            return mScroll <= mFadeStop;
9414        }
9415
9416        boolean shouldDrawGhost() {
9417            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
9418        }
9419
9420        boolean isRunning() {
9421            return mStatus == MARQUEE_RUNNING;
9422        }
9423
9424        boolean isStopped() {
9425            return mStatus == MARQUEE_STOPPED;
9426        }
9427    }
9428
9429    private class ChangeWatcher implements TextWatcher, SpanWatcher {
9430
9431        private CharSequence mBeforeText;
9432
9433        public void beforeTextChanged(CharSequence buffer, int start,
9434                                      int before, int after) {
9435            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
9436                    + " before=" + before + " after=" + after + ": " + buffer);
9437
9438            if (AccessibilityManager.getInstance(mContext).isEnabled()
9439                    && ((!isPasswordInputType(getInputType()) && !hasPasswordTransformationMethod())
9440                            || shouldSpeakPasswordsForAccessibility())) {
9441                mBeforeText = buffer.toString();
9442            }
9443
9444            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
9445        }
9446
9447        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
9448            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
9449                    + " before=" + before + " after=" + after + ": " + buffer);
9450            TextView.this.handleTextChanged(buffer, start, before, after);
9451
9452            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
9453                    (isFocused() || isSelected() && isShown())) {
9454                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
9455                mBeforeText = null;
9456            }
9457        }
9458
9459        public void afterTextChanged(Editable buffer) {
9460            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
9461            TextView.this.sendAfterTextChanged(buffer);
9462
9463            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
9464                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
9465            }
9466        }
9467
9468        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
9469            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
9470                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
9471            TextView.this.spanChange(buf, what, s, st, e, en);
9472        }
9473
9474        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
9475            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
9476                    + " what=" + what + ": " + buf);
9477            TextView.this.spanChange(buf, what, -1, s, -1, e);
9478        }
9479
9480        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
9481            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
9482                    + " what=" + what + ": " + buf);
9483            TextView.this.spanChange(buf, what, s, -1, e, -1);
9484        }
9485    }
9486}
9487