TextView.java revision d056081e502debdafe7e91d12400d19de2899a9a 
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 static android.os.Build.VERSION_CODES.JELLY_BEAN_MR1;
20import android.R;
21import android.annotation.ColorInt;
22import android.annotation.DrawableRes;
23import android.annotation.NonNull;
24import android.annotation.Nullable;
25import android.annotation.Size;
26import android.annotation.StringRes;
27import android.annotation.StyleRes;
28import android.annotation.XmlRes;
29import android.app.Activity;
30import android.app.assist.AssistStructure;
31import android.content.ClipData;
32import android.content.ClipboardManager;
33import android.content.Context;
34import android.content.Intent;
35import android.content.UndoManager;
36import android.content.res.ColorStateList;
37import android.content.res.CompatibilityInfo;
38import android.content.res.Configuration;
39import android.content.res.Resources;
40import android.content.res.TypedArray;
41import android.content.res.XmlResourceParser;
42import android.graphics.Canvas;
43import android.graphics.Insets;
44import android.graphics.Paint;
45import android.graphics.Path;
46import android.graphics.PorterDuff;
47import android.graphics.Rect;
48import android.graphics.RectF;
49import android.graphics.Typeface;
50import android.graphics.drawable.Drawable;
51import android.os.AsyncTask;
52import android.os.Bundle;
53import android.os.Parcel;
54import android.os.Parcelable;
55import android.os.ParcelableParcel;
56import android.os.SystemClock;
57import android.os.UserHandle;
58import android.provider.Settings;
59import android.text.BoringLayout;
60import android.text.DynamicLayout;
61import android.text.Editable;
62import android.text.GetChars;
63import android.text.GraphicsOperations;
64import android.text.InputFilter;
65import android.text.InputType;
66import android.text.Layout;
67import android.text.ParcelableSpan;
68import android.text.Selection;
69import android.text.SpanWatcher;
70import android.text.Spannable;
71import android.text.SpannableString;
72import android.text.SpannableStringBuilder;
73import android.text.Spanned;
74import android.text.SpannedString;
75import android.text.StaticLayout;
76import android.text.TextDirectionHeuristic;
77import android.text.TextDirectionHeuristics;
78import android.text.TextPaint;
79import android.text.TextUtils;
80import android.text.TextUtils.TruncateAt;
81import android.text.TextWatcher;
82import android.text.method.AllCapsTransformationMethod;
83import android.text.method.ArrowKeyMovementMethod;
84import android.text.method.DateKeyListener;
85import android.text.method.DateTimeKeyListener;
86import android.text.method.DialerKeyListener;
87import android.text.method.DigitsKeyListener;
88import android.text.method.KeyListener;
89import android.text.method.LinkMovementMethod;
90import android.text.method.MetaKeyKeyListener;
91import android.text.method.MovementMethod;
92import android.text.method.PasswordTransformationMethod;
93import android.text.method.SingleLineTransformationMethod;
94import android.text.method.TextKeyListener;
95import android.text.method.TimeKeyListener;
96import android.text.method.TransformationMethod;
97import android.text.method.TransformationMethod2;
98import android.text.method.WordIterator;
99import android.text.style.CharacterStyle;
100import android.text.style.ClickableSpan;
101import android.text.style.ParagraphStyle;
102import android.text.style.SpellCheckSpan;
103import android.text.style.SuggestionSpan;
104import android.text.style.URLSpan;
105import android.text.style.UpdateAppearance;
106import android.text.util.Linkify;
107import android.util.AttributeSet;
108import android.util.LocaleList;
109import android.util.Log;
110import android.util.TypedValue;
111import android.view.AccessibilityIterators.TextSegmentIterator;
112import android.view.ActionMode;
113import android.view.Choreographer;
114import android.view.ContextMenu;
115import android.view.DragEvent;
116import android.view.Gravity;
117import android.view.HapticFeedbackConstants;
118import android.view.InputDevice;
119import android.view.KeyCharacterMap;
120import android.view.KeyEvent;
121import android.view.MotionEvent;
122import android.view.PointerIcon;
123import android.view.View;
124import android.view.ViewConfiguration;
125import android.view.ViewDebug;
126import android.view.ViewGroup.LayoutParams;
127import android.view.ViewHierarchyEncoder;
128import android.view.ViewParent;
129import android.view.ViewRootImpl;
130import android.view.ViewStructure;
131import android.view.ViewTreeObserver;
132import android.view.accessibility.AccessibilityEvent;
133import android.view.accessibility.AccessibilityManager;
134import android.view.accessibility.AccessibilityNodeInfo;
135import android.view.animation.AnimationUtils;
136import android.view.inputmethod.BaseInputConnection;
137import android.view.inputmethod.CompletionInfo;
138import android.view.inputmethod.CorrectionInfo;
139import android.view.inputmethod.EditorInfo;
140import android.view.inputmethod.ExtractedText;
141import android.view.inputmethod.ExtractedTextRequest;
142import android.view.inputmethod.InputConnection;
143import android.view.inputmethod.InputMethodManager;
144import android.view.textservice.SpellCheckerSubtype;
145import android.view.textservice.TextServicesManager;
146import android.widget.RemoteViews.RemoteView;
147
148import com.android.internal.annotations.VisibleForTesting;
149import com.android.internal.util.FastMath;
150import com.android.internal.widget.EditableInputConnection;
151
152import org.xmlpull.v1.XmlPullParserException;
153
154import java.io.IOException;
155import java.lang.ref.WeakReference;
156import java.util.ArrayList;
157import java.util.Locale;
158
159/**
160 * Displays text to the user and optionally allows them to edit it.  A TextView
161 * is a complete text editor, however the basic class is configured to not
162 * allow editing; see {@link EditText} for a subclass that configures the text
163 * view for editing.
164 *
165 * <p>
166 * To allow users to copy some or all of the TextView's value and paste it somewhere else, set the
167 * XML attribute {@link android.R.styleable#TextView_textIsSelectable
168 * android:textIsSelectable} to "true" or call
169 * {@link #setTextIsSelectable setTextIsSelectable(true)}. The {@code textIsSelectable} flag
170 * allows users to make selection gestures in the TextView, which in turn triggers the system's
171 * built-in copy/paste controls.
172 * <p>
173 * <b>XML attributes</b>
174 * <p>
175 * See {@link android.R.styleable#TextView TextView Attributes},
176 * {@link android.R.styleable#View View Attributes}
177 *
178 * @attr ref android.R.styleable#TextView_text
179 * @attr ref android.R.styleable#TextView_bufferType
180 * @attr ref android.R.styleable#TextView_hint
181 * @attr ref android.R.styleable#TextView_textColor
182 * @attr ref android.R.styleable#TextView_textColorHighlight
183 * @attr ref android.R.styleable#TextView_textColorHint
184 * @attr ref android.R.styleable#TextView_textAppearance
185 * @attr ref android.R.styleable#TextView_textColorLink
186 * @attr ref android.R.styleable#TextView_textSize
187 * @attr ref android.R.styleable#TextView_textScaleX
188 * @attr ref android.R.styleable#TextView_fontFamily
189 * @attr ref android.R.styleable#TextView_typeface
190 * @attr ref android.R.styleable#TextView_textStyle
191 * @attr ref android.R.styleable#TextView_cursorVisible
192 * @attr ref android.R.styleable#TextView_maxLines
193 * @attr ref android.R.styleable#TextView_maxHeight
194 * @attr ref android.R.styleable#TextView_lines
195 * @attr ref android.R.styleable#TextView_height
196 * @attr ref android.R.styleable#TextView_minLines
197 * @attr ref android.R.styleable#TextView_minHeight
198 * @attr ref android.R.styleable#TextView_maxEms
199 * @attr ref android.R.styleable#TextView_maxWidth
200 * @attr ref android.R.styleable#TextView_ems
201 * @attr ref android.R.styleable#TextView_width
202 * @attr ref android.R.styleable#TextView_minEms
203 * @attr ref android.R.styleable#TextView_minWidth
204 * @attr ref android.R.styleable#TextView_gravity
205 * @attr ref android.R.styleable#TextView_scrollHorizontally
206 * @attr ref android.R.styleable#TextView_password
207 * @attr ref android.R.styleable#TextView_singleLine
208 * @attr ref android.R.styleable#TextView_selectAllOnFocus
209 * @attr ref android.R.styleable#TextView_includeFontPadding
210 * @attr ref android.R.styleable#TextView_maxLength
211 * @attr ref android.R.styleable#TextView_shadowColor
212 * @attr ref android.R.styleable#TextView_shadowDx
213 * @attr ref android.R.styleable#TextView_shadowDy
214 * @attr ref android.R.styleable#TextView_shadowRadius
215 * @attr ref android.R.styleable#TextView_autoLink
216 * @attr ref android.R.styleable#TextView_linksClickable
217 * @attr ref android.R.styleable#TextView_numeric
218 * @attr ref android.R.styleable#TextView_digits
219 * @attr ref android.R.styleable#TextView_phoneNumber
220 * @attr ref android.R.styleable#TextView_inputMethod
221 * @attr ref android.R.styleable#TextView_capitalize
222 * @attr ref android.R.styleable#TextView_autoText
223 * @attr ref android.R.styleable#TextView_editable
224 * @attr ref android.R.styleable#TextView_freezesText
225 * @attr ref android.R.styleable#TextView_ellipsize
226 * @attr ref android.R.styleable#TextView_drawableTop
227 * @attr ref android.R.styleable#TextView_drawableBottom
228 * @attr ref android.R.styleable#TextView_drawableRight
229 * @attr ref android.R.styleable#TextView_drawableLeft
230 * @attr ref android.R.styleable#TextView_drawableStart
231 * @attr ref android.R.styleable#TextView_drawableEnd
232 * @attr ref android.R.styleable#TextView_drawablePadding
233 * @attr ref android.R.styleable#TextView_drawableTint
234 * @attr ref android.R.styleable#TextView_drawableTintMode
235 * @attr ref android.R.styleable#TextView_lineSpacingExtra
236 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
237 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
238 * @attr ref android.R.styleable#TextView_inputType
239 * @attr ref android.R.styleable#TextView_imeOptions
240 * @attr ref android.R.styleable#TextView_privateImeOptions
241 * @attr ref android.R.styleable#TextView_imeActionLabel
242 * @attr ref android.R.styleable#TextView_imeActionId
243 * @attr ref android.R.styleable#TextView_editorExtras
244 * @attr ref android.R.styleable#TextView_elegantTextHeight
245 * @attr ref android.R.styleable#TextView_letterSpacing
246 * @attr ref android.R.styleable#TextView_fontFeatureSettings
247 * @attr ref android.R.styleable#TextView_breakStrategy
248 * @attr ref android.R.styleable#TextView_hyphenationFrequency
249 */
250@RemoteView
251public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
252    static final String LOG_TAG = "TextView";
253    static final boolean DEBUG_EXTRACT = false;
254
255    // Enum for the "typeface" XML parameter.
256    // TODO: How can we get this from the XML instead of hardcoding it here?
257    private static final int SANS = 1;
258    private static final int SERIF = 2;
259    private static final int MONOSPACE = 3;
260
261    // Bitfield for the "numeric" XML parameter.
262    // TODO: How can we get this from the XML instead of hardcoding it here?
263    private static final int SIGNED = 2;
264    private static final int DECIMAL = 4;
265
266    /**
267     * Draw marquee text with fading edges as usual
268     */
269    private static final int MARQUEE_FADE_NORMAL = 0;
270
271    /**
272     * Draw marquee text as ellipsize end while inactive instead of with the fade.
273     * (Useful for devices where the fade can be expensive if overdone)
274     */
275    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
276
277    /**
278     * Draw marquee text with fading edges because it is currently active/animating.
279     */
280    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
281
282    private static final int LINES = 1;
283    private static final int EMS = LINES;
284    private static final int PIXELS = 2;
285
286    private static final RectF TEMP_RECTF = new RectF();
287
288    // XXX should be much larger
289    private static final int VERY_WIDE = 1024*1024;
290    private static final int ANIMATED_SCROLL_GAP = 250;
291
292    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
293    private static final Spanned EMPTY_SPANNED = new SpannedString("");
294
295    private static final int CHANGE_WATCHER_PRIORITY = 100;
296
297    // New state used to change background based on whether this TextView is multiline.
298    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
299
300    // Accessibility action to share selected text.
301    private static final int ACCESSIBILITY_ACTION_SHARE = 0x10000000;
302
303    /**
304     * @hide
305     */
306    // Accessibility action start id for "process text" actions.
307    static final int ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID = 0x10000100;
308
309    /**
310     * @hide
311     */
312    static final int PROCESS_TEXT_REQUEST_CODE = 100;
313
314    /**
315     *  Return code of {@link #doKeyDown}.
316     */
317    private static final int KEY_EVENT_NOT_HANDLED = 0;
318    private static final int KEY_EVENT_HANDLED = -1;
319    private static final int KEY_DOWN_HANDLED_BY_KEY_LISTENER = 1;
320    private static final int KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD = 2;
321
322    // System wide time for last cut, copy or text changed action.
323    static long sLastCutCopyOrTextChangedTime;
324
325    private ColorStateList mTextColor;
326    private ColorStateList mHintTextColor;
327    private ColorStateList mLinkTextColor;
328    @ViewDebug.ExportedProperty(category = "text")
329    private int mCurTextColor;
330    private int mCurHintTextColor;
331    private boolean mFreezesText;
332    private boolean mDispatchTemporaryDetach;
333
334    /** Whether this view is temporarily detached from the parent view. */
335    boolean mTemporaryDetach;
336
337    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
338    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
339
340    private float mShadowRadius, mShadowDx, mShadowDy;
341    private int mShadowColor;
342
343    private boolean mPreDrawRegistered;
344    private boolean mPreDrawListenerDetached;
345
346    // A flag to prevent repeated movements from escaping the enclosing text view. The idea here is
347    // that if a user is holding down a movement key to traverse text, we shouldn't also traverse
348    // the view hierarchy. On the other hand, if the user is using the movement key to traverse views
349    // (i.e. the first movement was to traverse out of this view, or this view was traversed into by
350    // the user holding the movement key down) then we shouldn't prevent the focus from changing.
351    private boolean mPreventDefaultMovement;
352
353    private TextUtils.TruncateAt mEllipsize;
354
355    static class Drawables {
356        static final int LEFT = 0;
357        static final int TOP = 1;
358        static final int RIGHT = 2;
359        static final int BOTTOM = 3;
360
361        static final int DRAWABLE_NONE = -1;
362        static final int DRAWABLE_RIGHT = 0;
363        static final int DRAWABLE_LEFT = 1;
364
365        final Rect mCompoundRect = new Rect();
366
367        final Drawable[] mShowing = new Drawable[4];
368
369        ColorStateList mTintList;
370        PorterDuff.Mode mTintMode;
371        boolean mHasTint;
372        boolean mHasTintMode;
373
374        Drawable mDrawableStart, mDrawableEnd, mDrawableError, mDrawableTemp;
375        Drawable mDrawableLeftInitial, mDrawableRightInitial;
376
377        boolean mIsRtlCompatibilityMode;
378        boolean mOverride;
379
380        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
381                mDrawableSizeStart, mDrawableSizeEnd, mDrawableSizeError, mDrawableSizeTemp;
382
383        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
384                mDrawableHeightStart, mDrawableHeightEnd, mDrawableHeightError, mDrawableHeightTemp;
385
386        int mDrawablePadding;
387
388        int mDrawableSaved = DRAWABLE_NONE;
389
390        public Drawables(Context context) {
391            final int targetSdkVersion = context.getApplicationInfo().targetSdkVersion;
392            mIsRtlCompatibilityMode = (targetSdkVersion < JELLY_BEAN_MR1 ||
393                !context.getApplicationInfo().hasRtlSupport());
394            mOverride = false;
395        }
396
397        public void resolveWithLayoutDirection(int layoutDirection) {
398            // First reset "left" and "right" drawables to their initial values
399            mShowing[Drawables.LEFT] = mDrawableLeftInitial;
400            mShowing[Drawables.RIGHT] = mDrawableRightInitial;
401
402            if (mIsRtlCompatibilityMode) {
403                // Use "start" drawable as "left" drawable if the "left" drawable was not defined
404                if (mDrawableStart != null && mShowing[Drawables.LEFT] == null) {
405                    mShowing[Drawables.LEFT] = mDrawableStart;
406                    mDrawableSizeLeft = mDrawableSizeStart;
407                    mDrawableHeightLeft = mDrawableHeightStart;
408                }
409                // Use "end" drawable as "right" drawable if the "right" drawable was not defined
410                if (mDrawableEnd != null && mShowing[Drawables.RIGHT] == null) {
411                    mShowing[Drawables.RIGHT] = mDrawableEnd;
412                    mDrawableSizeRight = mDrawableSizeEnd;
413                    mDrawableHeightRight = mDrawableHeightEnd;
414                }
415            } else {
416                // JB-MR1+ normal case: "start" / "end" drawables are overriding "left" / "right"
417                // drawable if and only if they have been defined
418                switch(layoutDirection) {
419                    case LAYOUT_DIRECTION_RTL:
420                        if (mOverride) {
421                            mShowing[Drawables.RIGHT] = mDrawableStart;
422                            mDrawableSizeRight = mDrawableSizeStart;
423                            mDrawableHeightRight = mDrawableHeightStart;
424
425                            mShowing[Drawables.LEFT] = mDrawableEnd;
426                            mDrawableSizeLeft = mDrawableSizeEnd;
427                            mDrawableHeightLeft = mDrawableHeightEnd;
428                        }
429                        break;
430
431                    case LAYOUT_DIRECTION_LTR:
432                    default:
433                        if (mOverride) {
434                            mShowing[Drawables.LEFT] = mDrawableStart;
435                            mDrawableSizeLeft = mDrawableSizeStart;
436                            mDrawableHeightLeft = mDrawableHeightStart;
437
438                            mShowing[Drawables.RIGHT] = mDrawableEnd;
439                            mDrawableSizeRight = mDrawableSizeEnd;
440                            mDrawableHeightRight = mDrawableHeightEnd;
441                        }
442                        break;
443                }
444            }
445            applyErrorDrawableIfNeeded(layoutDirection);
446            updateDrawablesLayoutDirection(layoutDirection);
447        }
448
449        private void updateDrawablesLayoutDirection(int layoutDirection) {
450            for (Drawable dr : mShowing) {
451                if (dr != null) {
452                    dr.setLayoutDirection(layoutDirection);
453                }
454            }
455        }
456
457        public void setErrorDrawable(Drawable dr, TextView tv) {
458            if (mDrawableError != dr && mDrawableError != null) {
459                mDrawableError.setCallback(null);
460            }
461            mDrawableError = dr;
462
463            if (mDrawableError != null) {
464                final Rect compoundRect = mCompoundRect;
465                final int[] state = tv.getDrawableState();
466
467                mDrawableError.setState(state);
468                mDrawableError.copyBounds(compoundRect);
469                mDrawableError.setCallback(tv);
470                mDrawableSizeError = compoundRect.width();
471                mDrawableHeightError = compoundRect.height();
472            } else {
473                mDrawableSizeError = mDrawableHeightError = 0;
474            }
475        }
476
477        private void applyErrorDrawableIfNeeded(int layoutDirection) {
478            // first restore the initial state if needed
479            switch (mDrawableSaved) {
480                case DRAWABLE_LEFT:
481                    mShowing[Drawables.LEFT] = mDrawableTemp;
482                    mDrawableSizeLeft = mDrawableSizeTemp;
483                    mDrawableHeightLeft = mDrawableHeightTemp;
484                    break;
485                case DRAWABLE_RIGHT:
486                    mShowing[Drawables.RIGHT] = mDrawableTemp;
487                    mDrawableSizeRight = mDrawableSizeTemp;
488                    mDrawableHeightRight = mDrawableHeightTemp;
489                    break;
490                case DRAWABLE_NONE:
491                default:
492            }
493            // then, if needed, assign the Error drawable to the correct location
494            if (mDrawableError != null) {
495                switch(layoutDirection) {
496                    case LAYOUT_DIRECTION_RTL:
497                        mDrawableSaved = DRAWABLE_LEFT;
498
499                        mDrawableTemp = mShowing[Drawables.LEFT];
500                        mDrawableSizeTemp = mDrawableSizeLeft;
501                        mDrawableHeightTemp = mDrawableHeightLeft;
502
503                        mShowing[Drawables.LEFT] = mDrawableError;
504                        mDrawableSizeLeft = mDrawableSizeError;
505                        mDrawableHeightLeft = mDrawableHeightError;
506                        break;
507                    case LAYOUT_DIRECTION_LTR:
508                    default:
509                        mDrawableSaved = DRAWABLE_RIGHT;
510
511                        mDrawableTemp = mShowing[Drawables.RIGHT];
512                        mDrawableSizeTemp = mDrawableSizeRight;
513                        mDrawableHeightTemp = mDrawableHeightRight;
514
515                        mShowing[Drawables.RIGHT] = mDrawableError;
516                        mDrawableSizeRight = mDrawableSizeError;
517                        mDrawableHeightRight = mDrawableHeightError;
518                        break;
519                }
520            }
521        }
522    }
523
524    Drawables mDrawables;
525
526    private CharWrapper mCharWrapper;
527
528    private Marquee mMarquee;
529    private boolean mRestartMarquee;
530
531    private int mMarqueeRepeatLimit = 3;
532
533    private int mLastLayoutDirection = -1;
534
535    /**
536     * On some devices the fading edges add a performance penalty if used
537     * extensively in the same layout. This mode indicates how the marquee
538     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
539     */
540    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
541
542    /**
543     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
544     * the layout that should be used when the mode switches.
545     */
546    private Layout mSavedMarqueeModeLayout;
547
548    @ViewDebug.ExportedProperty(category = "text")
549    private CharSequence mText;
550    private CharSequence mTransformed;
551    private BufferType mBufferType = BufferType.NORMAL;
552
553    private CharSequence mHint;
554    private Layout mHintLayout;
555
556    private MovementMethod mMovement;
557
558    private TransformationMethod mTransformation;
559    private boolean mAllowTransformationLengthChange;
560    private ChangeWatcher mChangeWatcher;
561
562    private ArrayList<TextWatcher> mListeners;
563
564    // display attributes
565    private final TextPaint mTextPaint;
566    private boolean mUserSetTextScaleX;
567    private Layout mLayout;
568    private boolean mLocalesChanged = false;
569
570    @ViewDebug.ExportedProperty(category = "text")
571    private int mGravity = Gravity.TOP | Gravity.START;
572    private boolean mHorizontallyScrolling;
573
574    private int mAutoLinkMask;
575    private boolean mLinksClickable = true;
576
577    private float mSpacingMult = 1.0f;
578    private float mSpacingAdd = 0.0f;
579
580    private int mBreakStrategy;
581    private int mHyphenationFrequency;
582
583    private int mMaximum = Integer.MAX_VALUE;
584    private int mMaxMode = LINES;
585    private int mMinimum = 0;
586    private int mMinMode = LINES;
587
588    private int mOldMaximum = mMaximum;
589    private int mOldMaxMode = mMaxMode;
590
591    private int mMaxWidth = Integer.MAX_VALUE;
592    private int mMaxWidthMode = PIXELS;
593    private int mMinWidth = 0;
594    private int mMinWidthMode = PIXELS;
595
596    private boolean mSingleLine;
597    private int mDesiredHeightAtMeasure = -1;
598    private boolean mIncludePad = true;
599    private int mDeferScroll = -1;
600
601    // tmp primitives, so we don't alloc them on each draw
602    private Rect mTempRect;
603    private long mLastScroll;
604    private Scroller mScroller;
605
606    private BoringLayout.Metrics mBoring, mHintBoring;
607    private BoringLayout mSavedLayout, mSavedHintLayout;
608
609    private TextDirectionHeuristic mTextDir;
610
611    private InputFilter[] mFilters = NO_FILTERS;
612
613    private volatile Locale mCurrentSpellCheckerLocaleCache;
614
615    // It is possible to have a selection even when mEditor is null (programmatically set, like when
616    // a link is pressed). These highlight-related fields do not go in mEditor.
617    int mHighlightColor = 0x6633B5E5;
618    private Path mHighlightPath;
619    private final Paint mHighlightPaint;
620    private boolean mHighlightPathBogus = true;
621
622    // Although these fields are specific to editable text, they are not added to Editor because
623    // they are defined by the TextView's style and are theme-dependent.
624    int mCursorDrawableRes;
625    // These six fields, could be moved to Editor, since we know their default values and we
626    // could condition the creation of the Editor to a non standard value. This is however
627    // brittle since the hardcoded values here (such as
628    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
629    // default style is modified.
630    int mTextSelectHandleLeftRes;
631    int mTextSelectHandleRightRes;
632    int mTextSelectHandleRes;
633    int mTextEditSuggestionItemLayout;
634    int mTextEditSuggestionContainerLayout;
635    int mTextEditSuggestionHighlightStyle;
636
637    /**
638     * EditText specific data, created on demand when one of the Editor fields is used.
639     * See {@link #createEditorIfNeeded()}.
640     */
641    private Editor mEditor;
642
643    /*
644     * Kick-start the font cache for the zygote process (to pay the cost of
645     * initializing freetype for our default font only once).
646     */
647    static {
648        Paint p = new Paint();
649        p.setAntiAlias(true);
650        // We don't care about the result, just the side-effect of measuring.
651        p.measureText("H");
652    }
653
654    /**
655     * Interface definition for a callback to be invoked when an action is
656     * performed on the editor.
657     */
658    public interface OnEditorActionListener {
659        /**
660         * Called when an action is being performed.
661         *
662         * @param v The view that was clicked.
663         * @param actionId Identifier of the action.  This will be either the
664         * identifier you supplied, or {@link EditorInfo#IME_NULL
665         * EditorInfo.IME_NULL} if being called due to the enter key
666         * being pressed.
667         * @param event If triggered by an enter key, this is the event;
668         * otherwise, this is null.
669         * @return Return true if you have consumed the action, else false.
670         */
671        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
672    }
673
674    public TextView(Context context) {
675        this(context, null);
676    }
677
678    public TextView(Context context, @Nullable AttributeSet attrs) {
679        this(context, attrs, com.android.internal.R.attr.textViewStyle);
680    }
681
682    public TextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
683        this(context, attrs, defStyleAttr, 0);
684    }
685
686    @SuppressWarnings("deprecation")
687    public TextView(
688            Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
689        super(context, attrs, defStyleAttr, defStyleRes);
690
691        mText = "";
692
693        final Resources res = getResources();
694        final CompatibilityInfo compat = res.getCompatibilityInfo();
695
696        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
697        mTextPaint.density = res.getDisplayMetrics().density;
698        mTextPaint.setCompatibilityScaling(compat.applicationScale);
699
700        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
701        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
702
703        mMovement = getDefaultMovementMethod();
704
705        mTransformation = null;
706
707        int textColorHighlight = 0;
708        ColorStateList textColor = null;
709        ColorStateList textColorHint = null;
710        ColorStateList textColorLink = null;
711        int textSize = 15;
712        String fontFamily = null;
713        boolean fontFamilyExplicit = false;
714        int typefaceIndex = -1;
715        int styleIndex = -1;
716        boolean allCaps = false;
717        int shadowcolor = 0;
718        float dx = 0, dy = 0, r = 0;
719        boolean elegant = false;
720        float letterSpacing = 0;
721        String fontFeatureSettings = null;
722        mBreakStrategy = Layout.BREAK_STRATEGY_SIMPLE;
723        mHyphenationFrequency = Layout.HYPHENATION_FREQUENCY_NONE;
724
725        final Resources.Theme theme = context.getTheme();
726
727        /*
728         * Look the appearance up without checking first if it exists because
729         * almost every TextView has one and it greatly simplifies the logic
730         * to be able to parse the appearance first and then let specific tags
731         * for this View override it.
732         */
733        TypedArray a = theme.obtainStyledAttributes(attrs,
734                com.android.internal.R.styleable.TextViewAppearance, defStyleAttr, defStyleRes);
735        TypedArray appearance = null;
736        int ap = a.getResourceId(
737                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
738        a.recycle();
739        if (ap != -1) {
740            appearance = theme.obtainStyledAttributes(
741                    ap, com.android.internal.R.styleable.TextAppearance);
742        }
743        if (appearance != null) {
744            int n = appearance.getIndexCount();
745            for (int i = 0; i < n; i++) {
746                int attr = appearance.getIndex(i);
747
748                switch (attr) {
749                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
750                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
751                    break;
752
753                case com.android.internal.R.styleable.TextAppearance_textColor:
754                    textColor = appearance.getColorStateList(attr);
755                    break;
756
757                case com.android.internal.R.styleable.TextAppearance_textColorHint:
758                    textColorHint = appearance.getColorStateList(attr);
759                    break;
760
761                case com.android.internal.R.styleable.TextAppearance_textColorLink:
762                    textColorLink = appearance.getColorStateList(attr);
763                    break;
764
765                case com.android.internal.R.styleable.TextAppearance_textSize:
766                    textSize = appearance.getDimensionPixelSize(attr, textSize);
767                    break;
768
769                case com.android.internal.R.styleable.TextAppearance_typeface:
770                    typefaceIndex = appearance.getInt(attr, -1);
771                    break;
772
773                case com.android.internal.R.styleable.TextAppearance_fontFamily:
774                    fontFamily = appearance.getString(attr);
775                    break;
776
777                case com.android.internal.R.styleable.TextAppearance_textStyle:
778                    styleIndex = appearance.getInt(attr, -1);
779                    break;
780
781                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
782                    allCaps = appearance.getBoolean(attr, false);
783                    break;
784
785                case com.android.internal.R.styleable.TextAppearance_shadowColor:
786                    shadowcolor = appearance.getInt(attr, 0);
787                    break;
788
789                case com.android.internal.R.styleable.TextAppearance_shadowDx:
790                    dx = appearance.getFloat(attr, 0);
791                    break;
792
793                case com.android.internal.R.styleable.TextAppearance_shadowDy:
794                    dy = appearance.getFloat(attr, 0);
795                    break;
796
797                case com.android.internal.R.styleable.TextAppearance_shadowRadius:
798                    r = appearance.getFloat(attr, 0);
799                    break;
800
801                case com.android.internal.R.styleable.TextAppearance_elegantTextHeight:
802                    elegant = appearance.getBoolean(attr, false);
803                    break;
804
805                case com.android.internal.R.styleable.TextAppearance_letterSpacing:
806                    letterSpacing = appearance.getFloat(attr, 0);
807                    break;
808
809                case com.android.internal.R.styleable.TextAppearance_fontFeatureSettings:
810                    fontFeatureSettings = appearance.getString(attr);
811                    break;
812                }
813            }
814
815            appearance.recycle();
816        }
817
818        boolean editable = getDefaultEditable();
819        CharSequence inputMethod = null;
820        int numeric = 0;
821        CharSequence digits = null;
822        boolean phone = false;
823        boolean autotext = false;
824        int autocap = -1;
825        int buffertype = 0;
826        boolean selectallonfocus = false;
827        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
828            drawableBottom = null, drawableStart = null, drawableEnd = null;
829        ColorStateList drawableTint = null;
830        PorterDuff.Mode drawableTintMode = null;
831        int drawablePadding = 0;
832        int ellipsize = -1;
833        boolean singleLine = false;
834        int maxlength = -1;
835        CharSequence text = "";
836        CharSequence hint = null;
837        boolean password = false;
838        int inputType = EditorInfo.TYPE_NULL;
839
840        a = theme.obtainStyledAttributes(
841                    attrs, com.android.internal.R.styleable.TextView, defStyleAttr, defStyleRes);
842
843        int n = a.getIndexCount();
844        for (int i = 0; i < n; i++) {
845            int attr = a.getIndex(i);
846
847            switch (attr) {
848            case com.android.internal.R.styleable.TextView_editable:
849                editable = a.getBoolean(attr, editable);
850                break;
851
852            case com.android.internal.R.styleable.TextView_inputMethod:
853                inputMethod = a.getText(attr);
854                break;
855
856            case com.android.internal.R.styleable.TextView_numeric:
857                numeric = a.getInt(attr, numeric);
858                break;
859
860            case com.android.internal.R.styleable.TextView_digits:
861                digits = a.getText(attr);
862                break;
863
864            case com.android.internal.R.styleable.TextView_phoneNumber:
865                phone = a.getBoolean(attr, phone);
866                break;
867
868            case com.android.internal.R.styleable.TextView_autoText:
869                autotext = a.getBoolean(attr, autotext);
870                break;
871
872            case com.android.internal.R.styleable.TextView_capitalize:
873                autocap = a.getInt(attr, autocap);
874                break;
875
876            case com.android.internal.R.styleable.TextView_bufferType:
877                buffertype = a.getInt(attr, buffertype);
878                break;
879
880            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
881                selectallonfocus = a.getBoolean(attr, selectallonfocus);
882                break;
883
884            case com.android.internal.R.styleable.TextView_autoLink:
885                mAutoLinkMask = a.getInt(attr, 0);
886                break;
887
888            case com.android.internal.R.styleable.TextView_linksClickable:
889                mLinksClickable = a.getBoolean(attr, true);
890                break;
891
892            case com.android.internal.R.styleable.TextView_drawableLeft:
893                drawableLeft = a.getDrawable(attr);
894                break;
895
896            case com.android.internal.R.styleable.TextView_drawableTop:
897                drawableTop = a.getDrawable(attr);
898                break;
899
900            case com.android.internal.R.styleable.TextView_drawableRight:
901                drawableRight = a.getDrawable(attr);
902                break;
903
904            case com.android.internal.R.styleable.TextView_drawableBottom:
905                drawableBottom = a.getDrawable(attr);
906                break;
907
908            case com.android.internal.R.styleable.TextView_drawableStart:
909                drawableStart = a.getDrawable(attr);
910                break;
911
912            case com.android.internal.R.styleable.TextView_drawableEnd:
913                drawableEnd = a.getDrawable(attr);
914                break;
915
916            case com.android.internal.R.styleable.TextView_drawableTint:
917                drawableTint = a.getColorStateList(attr);
918                break;
919
920            case com.android.internal.R.styleable.TextView_drawableTintMode:
921                drawableTintMode = Drawable.parseTintMode(a.getInt(attr, -1), drawableTintMode);
922                break;
923
924            case com.android.internal.R.styleable.TextView_drawablePadding:
925                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
926                break;
927
928            case com.android.internal.R.styleable.TextView_maxLines:
929                setMaxLines(a.getInt(attr, -1));
930                break;
931
932            case com.android.internal.R.styleable.TextView_maxHeight:
933                setMaxHeight(a.getDimensionPixelSize(attr, -1));
934                break;
935
936            case com.android.internal.R.styleable.TextView_lines:
937                setLines(a.getInt(attr, -1));
938                break;
939
940            case com.android.internal.R.styleable.TextView_height:
941                setHeight(a.getDimensionPixelSize(attr, -1));
942                break;
943
944            case com.android.internal.R.styleable.TextView_minLines:
945                setMinLines(a.getInt(attr, -1));
946                break;
947
948            case com.android.internal.R.styleable.TextView_minHeight:
949                setMinHeight(a.getDimensionPixelSize(attr, -1));
950                break;
951
952            case com.android.internal.R.styleable.TextView_maxEms:
953                setMaxEms(a.getInt(attr, -1));
954                break;
955
956            case com.android.internal.R.styleable.TextView_maxWidth:
957                setMaxWidth(a.getDimensionPixelSize(attr, -1));
958                break;
959
960            case com.android.internal.R.styleable.TextView_ems:
961                setEms(a.getInt(attr, -1));
962                break;
963
964            case com.android.internal.R.styleable.TextView_width:
965                setWidth(a.getDimensionPixelSize(attr, -1));
966                break;
967
968            case com.android.internal.R.styleable.TextView_minEms:
969                setMinEms(a.getInt(attr, -1));
970                break;
971
972            case com.android.internal.R.styleable.TextView_minWidth:
973                setMinWidth(a.getDimensionPixelSize(attr, -1));
974                break;
975
976            case com.android.internal.R.styleable.TextView_gravity:
977                setGravity(a.getInt(attr, -1));
978                break;
979
980            case com.android.internal.R.styleable.TextView_hint:
981                hint = a.getText(attr);
982                break;
983
984            case com.android.internal.R.styleable.TextView_text:
985                text = a.getText(attr);
986                break;
987
988            case com.android.internal.R.styleable.TextView_scrollHorizontally:
989                if (a.getBoolean(attr, false)) {
990                    setHorizontallyScrolling(true);
991                }
992                break;
993
994            case com.android.internal.R.styleable.TextView_singleLine:
995                singleLine = a.getBoolean(attr, singleLine);
996                break;
997
998            case com.android.internal.R.styleable.TextView_ellipsize:
999                ellipsize = a.getInt(attr, ellipsize);
1000                break;
1001
1002            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
1003                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
1004                break;
1005
1006            case com.android.internal.R.styleable.TextView_includeFontPadding:
1007                if (!a.getBoolean(attr, true)) {
1008                    setIncludeFontPadding(false);
1009                }
1010                break;
1011
1012            case com.android.internal.R.styleable.TextView_cursorVisible:
1013                if (!a.getBoolean(attr, true)) {
1014                    setCursorVisible(false);
1015                }
1016                break;
1017
1018            case com.android.internal.R.styleable.TextView_maxLength:
1019                maxlength = a.getInt(attr, -1);
1020                break;
1021
1022            case com.android.internal.R.styleable.TextView_textScaleX:
1023                setTextScaleX(a.getFloat(attr, 1.0f));
1024                break;
1025
1026            case com.android.internal.R.styleable.TextView_freezesText:
1027                mFreezesText = a.getBoolean(attr, false);
1028                break;
1029
1030            case com.android.internal.R.styleable.TextView_shadowColor:
1031                shadowcolor = a.getInt(attr, 0);
1032                break;
1033
1034            case com.android.internal.R.styleable.TextView_shadowDx:
1035                dx = a.getFloat(attr, 0);
1036                break;
1037
1038            case com.android.internal.R.styleable.TextView_shadowDy:
1039                dy = a.getFloat(attr, 0);
1040                break;
1041
1042            case com.android.internal.R.styleable.TextView_shadowRadius:
1043                r = a.getFloat(attr, 0);
1044                break;
1045
1046            case com.android.internal.R.styleable.TextView_enabled:
1047                setEnabled(a.getBoolean(attr, isEnabled()));
1048                break;
1049
1050            case com.android.internal.R.styleable.TextView_textColorHighlight:
1051                textColorHighlight = a.getColor(attr, textColorHighlight);
1052                break;
1053
1054            case com.android.internal.R.styleable.TextView_textColor:
1055                textColor = a.getColorStateList(attr);
1056                break;
1057
1058            case com.android.internal.R.styleable.TextView_textColorHint:
1059                textColorHint = a.getColorStateList(attr);
1060                break;
1061
1062            case com.android.internal.R.styleable.TextView_textColorLink:
1063                textColorLink = a.getColorStateList(attr);
1064                break;
1065
1066            case com.android.internal.R.styleable.TextView_textSize:
1067                textSize = a.getDimensionPixelSize(attr, textSize);
1068                break;
1069
1070            case com.android.internal.R.styleable.TextView_typeface:
1071                typefaceIndex = a.getInt(attr, typefaceIndex);
1072                break;
1073
1074            case com.android.internal.R.styleable.TextView_textStyle:
1075                styleIndex = a.getInt(attr, styleIndex);
1076                break;
1077
1078            case com.android.internal.R.styleable.TextView_fontFamily:
1079                fontFamily = a.getString(attr);
1080                fontFamilyExplicit = true;
1081                break;
1082
1083            case com.android.internal.R.styleable.TextView_password:
1084                password = a.getBoolean(attr, password);
1085                break;
1086
1087            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
1088                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
1089                break;
1090
1091            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
1092                mSpacingMult = a.getFloat(attr, mSpacingMult);
1093                break;
1094
1095            case com.android.internal.R.styleable.TextView_inputType:
1096                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
1097                break;
1098
1099            case com.android.internal.R.styleable.TextView_allowUndo:
1100                createEditorIfNeeded();
1101                mEditor.mAllowUndo = a.getBoolean(attr, true);
1102                break;
1103
1104            case com.android.internal.R.styleable.TextView_imeOptions:
1105                createEditorIfNeeded();
1106                mEditor.createInputContentTypeIfNeeded();
1107                mEditor.mInputContentType.imeOptions = a.getInt(attr,
1108                        mEditor.mInputContentType.imeOptions);
1109                break;
1110
1111            case com.android.internal.R.styleable.TextView_imeActionLabel:
1112                createEditorIfNeeded();
1113                mEditor.createInputContentTypeIfNeeded();
1114                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
1115                break;
1116
1117            case com.android.internal.R.styleable.TextView_imeActionId:
1118                createEditorIfNeeded();
1119                mEditor.createInputContentTypeIfNeeded();
1120                mEditor.mInputContentType.imeActionId = a.getInt(attr,
1121                        mEditor.mInputContentType.imeActionId);
1122                break;
1123
1124            case com.android.internal.R.styleable.TextView_privateImeOptions:
1125                setPrivateImeOptions(a.getString(attr));
1126                break;
1127
1128            case com.android.internal.R.styleable.TextView_editorExtras:
1129                try {
1130                    setInputExtras(a.getResourceId(attr, 0));
1131                } catch (XmlPullParserException e) {
1132                    Log.w(LOG_TAG, "Failure reading input extras", e);
1133                } catch (IOException e) {
1134                    Log.w(LOG_TAG, "Failure reading input extras", e);
1135                }
1136                break;
1137
1138            case com.android.internal.R.styleable.TextView_textCursorDrawable:
1139                mCursorDrawableRes = a.getResourceId(attr, 0);
1140                break;
1141
1142            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
1143                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
1144                break;
1145
1146            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
1147                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
1148                break;
1149
1150            case com.android.internal.R.styleable.TextView_textSelectHandle:
1151                mTextSelectHandleRes = a.getResourceId(attr, 0);
1152                break;
1153
1154            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
1155                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
1156                break;
1157
1158            case com.android.internal.R.styleable.TextView_textEditSuggestionContainerLayout:
1159                mTextEditSuggestionContainerLayout = a.getResourceId(attr, 0);
1160                break;
1161
1162            case com.android.internal.R.styleable.TextView_textEditSuggestionHighlightStyle:
1163                mTextEditSuggestionHighlightStyle = a.getResourceId(attr, 0);
1164                break;
1165
1166            case com.android.internal.R.styleable.TextView_textIsSelectable:
1167                setTextIsSelectable(a.getBoolean(attr, false));
1168                break;
1169
1170            case com.android.internal.R.styleable.TextView_textAllCaps:
1171                allCaps = a.getBoolean(attr, false);
1172                break;
1173
1174            case com.android.internal.R.styleable.TextView_elegantTextHeight:
1175                elegant = a.getBoolean(attr, false);
1176                break;
1177
1178            case com.android.internal.R.styleable.TextView_letterSpacing:
1179                letterSpacing = a.getFloat(attr, 0);
1180                break;
1181
1182            case com.android.internal.R.styleable.TextView_fontFeatureSettings:
1183                fontFeatureSettings = a.getString(attr);
1184                break;
1185
1186            case com.android.internal.R.styleable.TextView_breakStrategy:
1187                mBreakStrategy = a.getInt(attr, Layout.BREAK_STRATEGY_SIMPLE);
1188                break;
1189
1190            case com.android.internal.R.styleable.TextView_hyphenationFrequency:
1191                mHyphenationFrequency = a.getInt(attr, Layout.HYPHENATION_FREQUENCY_NONE);
1192                break;
1193            }
1194        }
1195        a.recycle();
1196
1197        BufferType bufferType = BufferType.EDITABLE;
1198
1199        final int variation =
1200                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
1201        final boolean passwordInputType = variation
1202                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
1203        final boolean webPasswordInputType = variation
1204                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
1205        final boolean numberPasswordInputType = variation
1206                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
1207
1208        if (inputMethod != null) {
1209            Class<?> c;
1210
1211            try {
1212                c = Class.forName(inputMethod.toString());
1213            } catch (ClassNotFoundException ex) {
1214                throw new RuntimeException(ex);
1215            }
1216
1217            try {
1218                createEditorIfNeeded();
1219                mEditor.mKeyListener = (KeyListener) c.newInstance();
1220            } catch (InstantiationException ex) {
1221                throw new RuntimeException(ex);
1222            } catch (IllegalAccessException ex) {
1223                throw new RuntimeException(ex);
1224            }
1225            try {
1226                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1227                        ? inputType
1228                        : mEditor.mKeyListener.getInputType();
1229            } catch (IncompatibleClassChangeError e) {
1230                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1231            }
1232        } else if (digits != null) {
1233            createEditorIfNeeded();
1234            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
1235            // If no input type was specified, we will default to generic
1236            // text, since we can't tell the IME about the set of digits
1237            // that was selected.
1238            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1239                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
1240        } else if (inputType != EditorInfo.TYPE_NULL) {
1241            setInputType(inputType, true);
1242            // If set, the input type overrides what was set using the deprecated singleLine flag.
1243            singleLine = !isMultilineInputType(inputType);
1244        } else if (phone) {
1245            createEditorIfNeeded();
1246            mEditor.mKeyListener = DialerKeyListener.getInstance();
1247            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
1248        } else if (numeric != 0) {
1249            createEditorIfNeeded();
1250            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
1251                                                   (numeric & DECIMAL) != 0);
1252            inputType = EditorInfo.TYPE_CLASS_NUMBER;
1253            if ((numeric & SIGNED) != 0) {
1254                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
1255            }
1256            if ((numeric & DECIMAL) != 0) {
1257                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
1258            }
1259            mEditor.mInputType = inputType;
1260        } else if (autotext || autocap != -1) {
1261            TextKeyListener.Capitalize cap;
1262
1263            inputType = EditorInfo.TYPE_CLASS_TEXT;
1264
1265            switch (autocap) {
1266            case 1:
1267                cap = TextKeyListener.Capitalize.SENTENCES;
1268                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
1269                break;
1270
1271            case 2:
1272                cap = TextKeyListener.Capitalize.WORDS;
1273                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
1274                break;
1275
1276            case 3:
1277                cap = TextKeyListener.Capitalize.CHARACTERS;
1278                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
1279                break;
1280
1281            default:
1282                cap = TextKeyListener.Capitalize.NONE;
1283                break;
1284            }
1285
1286            createEditorIfNeeded();
1287            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
1288            mEditor.mInputType = inputType;
1289        } else if (isTextSelectable()) {
1290            // Prevent text changes from keyboard.
1291            if (mEditor != null) {
1292                mEditor.mKeyListener = null;
1293                mEditor.mInputType = EditorInfo.TYPE_NULL;
1294            }
1295            bufferType = BufferType.SPANNABLE;
1296            // So that selection can be changed using arrow keys and touch is handled.
1297            setMovementMethod(ArrowKeyMovementMethod.getInstance());
1298        } else if (editable) {
1299            createEditorIfNeeded();
1300            mEditor.mKeyListener = TextKeyListener.getInstance();
1301            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1302        } else {
1303            if (mEditor != null) mEditor.mKeyListener = null;
1304
1305            switch (buffertype) {
1306                case 0:
1307                    bufferType = BufferType.NORMAL;
1308                    break;
1309                case 1:
1310                    bufferType = BufferType.SPANNABLE;
1311                    break;
1312                case 2:
1313                    bufferType = BufferType.EDITABLE;
1314                    break;
1315            }
1316        }
1317
1318        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
1319                webPasswordInputType, numberPasswordInputType);
1320
1321        if (selectallonfocus) {
1322            createEditorIfNeeded();
1323            mEditor.mSelectAllOnFocus = true;
1324
1325            if (bufferType == BufferType.NORMAL)
1326                bufferType = BufferType.SPANNABLE;
1327        }
1328
1329        // Set up the tint (if needed) before setting the drawables so that it
1330        // gets applied correctly.
1331        if (drawableTint != null || drawableTintMode != null) {
1332            if (mDrawables == null) {
1333                mDrawables = new Drawables(context);
1334            }
1335            if (drawableTint != null) {
1336                mDrawables.mTintList = drawableTint;
1337                mDrawables.mHasTint = true;
1338            }
1339            if (drawableTintMode != null) {
1340                mDrawables.mTintMode = drawableTintMode;
1341                mDrawables.mHasTintMode = true;
1342            }
1343        }
1344
1345        // This call will save the initial left/right drawables
1346        setCompoundDrawablesWithIntrinsicBounds(
1347            drawableLeft, drawableTop, drawableRight, drawableBottom);
1348        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1349        setCompoundDrawablePadding(drawablePadding);
1350
1351        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1352        // of lines of height are unchanged for multi-line TextViews.
1353        setInputTypeSingleLine(singleLine);
1354        applySingleLine(singleLine, singleLine, singleLine);
1355
1356        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1357                ellipsize = 3; // END
1358        }
1359
1360        switch (ellipsize) {
1361            case 1:
1362                setEllipsize(TextUtils.TruncateAt.START);
1363                break;
1364            case 2:
1365                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1366                break;
1367            case 3:
1368                setEllipsize(TextUtils.TruncateAt.END);
1369                break;
1370            case 4:
1371                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1372                    setHorizontalFadingEdgeEnabled(true);
1373                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1374                } else {
1375                    setHorizontalFadingEdgeEnabled(false);
1376                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1377                }
1378                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1379                break;
1380        }
1381
1382        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1383        setHintTextColor(textColorHint);
1384        setLinkTextColor(textColorLink);
1385        if (textColorHighlight != 0) {
1386            setHighlightColor(textColorHighlight);
1387        }
1388        setRawTextSize(textSize);
1389        setElegantTextHeight(elegant);
1390        setLetterSpacing(letterSpacing);
1391        setFontFeatureSettings(fontFeatureSettings);
1392
1393        if (allCaps) {
1394            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1395        }
1396
1397        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1398            setTransformationMethod(PasswordTransformationMethod.getInstance());
1399            typefaceIndex = MONOSPACE;
1400        } else if (mEditor != null &&
1401                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1402                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1403            typefaceIndex = MONOSPACE;
1404        }
1405
1406        if (typefaceIndex != -1 && !fontFamilyExplicit) {
1407            fontFamily = null;
1408        }
1409        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1410
1411        if (shadowcolor != 0) {
1412            setShadowLayer(r, dx, dy, shadowcolor);
1413        }
1414
1415        if (maxlength >= 0) {
1416            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1417        } else {
1418            setFilters(NO_FILTERS);
1419        }
1420
1421        setText(text, bufferType);
1422        if (hint != null) setHint(hint);
1423
1424        /*
1425         * Views are not normally focusable unless specified to be.
1426         * However, TextViews that have input or movement methods *are*
1427         * focusable by default.
1428         */
1429        a = context.obtainStyledAttributes(
1430                attrs, com.android.internal.R.styleable.View, defStyleAttr, defStyleRes);
1431
1432        boolean focusable = mMovement != null || getKeyListener() != null;
1433        boolean clickable = focusable || isClickable();
1434        boolean longClickable = focusable || isLongClickable();
1435
1436        n = a.getIndexCount();
1437        for (int i = 0; i < n; i++) {
1438            int attr = a.getIndex(i);
1439
1440            switch (attr) {
1441            case com.android.internal.R.styleable.View_focusable:
1442                focusable = a.getBoolean(attr, focusable);
1443                break;
1444
1445            case com.android.internal.R.styleable.View_clickable:
1446                clickable = a.getBoolean(attr, clickable);
1447                break;
1448
1449            case com.android.internal.R.styleable.View_longClickable:
1450                longClickable = a.getBoolean(attr, longClickable);
1451                break;
1452            }
1453        }
1454        a.recycle();
1455
1456        setFocusable(focusable);
1457        setClickable(clickable);
1458        setLongClickable(longClickable);
1459
1460        if (mEditor != null) mEditor.prepareCursorControllers();
1461
1462        // If not explicitly specified this view is important for accessibility.
1463        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1464            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1465        }
1466    }
1467
1468    private int[] parseDimensionArray(TypedArray dimens) {
1469        if (dimens == null) {
1470            return null;
1471        }
1472        int[] result = new int[dimens.length()];
1473        for (int i = 0; i < result.length; i++) {
1474            result[i] = dimens.getDimensionPixelSize(i, 0);
1475        }
1476        return result;
1477    }
1478
1479    /**
1480     * @hide
1481     */
1482    @Override
1483    public void onActivityResult(int requestCode, int resultCode, Intent data) {
1484        if (requestCode == PROCESS_TEXT_REQUEST_CODE) {
1485            if (resultCode == Activity.RESULT_OK && data != null) {
1486                CharSequence result = data.getCharSequenceExtra(Intent.EXTRA_PROCESS_TEXT);
1487                if (result != null) {
1488                    if (isTextEditable()) {
1489                        replaceSelectionWithText(result);
1490                    } else {
1491                        if (result.length() > 0) {
1492                            Toast.makeText(getContext(), String.valueOf(result), Toast.LENGTH_LONG)
1493                                .show();
1494                        }
1495                    }
1496                }
1497            } else if (mText instanceof Spannable) {
1498                // Reset the selection.
1499                stopTextActionMode();
1500                Selection.setSelection((Spannable) mText, getSelectionStart(), getSelectionEnd());
1501            }
1502
1503            if (mEditor.hasSelectionController()) {
1504                mEditor.startSelectionActionMode();
1505            }
1506        }
1507    }
1508
1509    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1510        Typeface tf = null;
1511        if (familyName != null) {
1512            tf = Typeface.create(familyName, styleIndex);
1513            if (tf != null) {
1514                setTypeface(tf);
1515                return;
1516            }
1517        }
1518        switch (typefaceIndex) {
1519            case SANS:
1520                tf = Typeface.SANS_SERIF;
1521                break;
1522
1523            case SERIF:
1524                tf = Typeface.SERIF;
1525                break;
1526
1527            case MONOSPACE:
1528                tf = Typeface.MONOSPACE;
1529                break;
1530        }
1531
1532        setTypeface(tf, styleIndex);
1533    }
1534
1535    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1536        boolean hasRelativeDrawables = (start != null) || (end != null);
1537        if (hasRelativeDrawables) {
1538            Drawables dr = mDrawables;
1539            if (dr == null) {
1540                mDrawables = dr = new Drawables(getContext());
1541            }
1542            mDrawables.mOverride = true;
1543            final Rect compoundRect = dr.mCompoundRect;
1544            int[] state = getDrawableState();
1545            if (start != null) {
1546                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1547                start.setState(state);
1548                start.copyBounds(compoundRect);
1549                start.setCallback(this);
1550
1551                dr.mDrawableStart = start;
1552                dr.mDrawableSizeStart = compoundRect.width();
1553                dr.mDrawableHeightStart = compoundRect.height();
1554            } else {
1555                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1556            }
1557            if (end != null) {
1558                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1559                end.setState(state);
1560                end.copyBounds(compoundRect);
1561                end.setCallback(this);
1562
1563                dr.mDrawableEnd = end;
1564                dr.mDrawableSizeEnd = compoundRect.width();
1565                dr.mDrawableHeightEnd = compoundRect.height();
1566            } else {
1567                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1568            }
1569            resetResolvedDrawables();
1570            resolveDrawables();
1571            applyCompoundDrawableTint();
1572        }
1573    }
1574
1575    @Override
1576    public void setEnabled(boolean enabled) {
1577        if (enabled == isEnabled()) {
1578            return;
1579        }
1580
1581        if (!enabled) {
1582            // Hide the soft input if the currently active TextView is disabled
1583            InputMethodManager imm = InputMethodManager.peekInstance();
1584            if (imm != null && imm.isActive(this)) {
1585                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1586            }
1587        }
1588
1589        super.setEnabled(enabled);
1590
1591        if (enabled) {
1592            // Make sure IME is updated with current editor info.
1593            InputMethodManager imm = InputMethodManager.peekInstance();
1594            if (imm != null) imm.restartInput(this);
1595        }
1596
1597        // Will change text color
1598        if (mEditor != null) {
1599            mEditor.invalidateTextDisplayList();
1600            mEditor.prepareCursorControllers();
1601
1602            // start or stop the cursor blinking as appropriate
1603            mEditor.makeBlink();
1604        }
1605    }
1606
1607    /**
1608     * Sets the typeface and style in which the text should be displayed,
1609     * and turns on the fake bold and italic bits in the Paint if the
1610     * Typeface that you provided does not have all the bits in the
1611     * style that you specified.
1612     *
1613     * @attr ref android.R.styleable#TextView_typeface
1614     * @attr ref android.R.styleable#TextView_textStyle
1615     */
1616    public void setTypeface(Typeface tf, int style) {
1617        if (style > 0) {
1618            if (tf == null) {
1619                tf = Typeface.defaultFromStyle(style);
1620            } else {
1621                tf = Typeface.create(tf, style);
1622            }
1623
1624            setTypeface(tf);
1625            // now compute what (if any) algorithmic styling is needed
1626            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1627            int need = style & ~typefaceStyle;
1628            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1629            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1630        } else {
1631            mTextPaint.setFakeBoldText(false);
1632            mTextPaint.setTextSkewX(0);
1633            setTypeface(tf);
1634        }
1635    }
1636
1637    /**
1638     * Subclasses override this to specify that they have a KeyListener
1639     * by default even if not specifically called for in the XML options.
1640     */
1641    protected boolean getDefaultEditable() {
1642        return false;
1643    }
1644
1645    /**
1646     * Subclasses override this to specify a default movement method.
1647     */
1648    protected MovementMethod getDefaultMovementMethod() {
1649        return null;
1650    }
1651
1652    /**
1653     * Return the text the TextView is displaying. If setText() was called with
1654     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1655     * the return value from this method to Spannable or Editable, respectively.
1656     *
1657     * Note: The content of the return value should not be modified. If you want
1658     * a modifiable one, you should make your own copy first.
1659     *
1660     * @attr ref android.R.styleable#TextView_text
1661     */
1662    @ViewDebug.CapturedViewProperty
1663    public CharSequence getText() {
1664        return mText;
1665    }
1666
1667    /**
1668     * Returns the length, in characters, of the text managed by this TextView
1669     */
1670    public int length() {
1671        return mText.length();
1672    }
1673
1674    /**
1675     * Return the text the TextView is displaying as an Editable object.  If
1676     * the text is not editable, null is returned.
1677     *
1678     * @see #getText
1679     */
1680    public Editable getEditableText() {
1681        return (mText instanceof Editable) ? (Editable)mText : null;
1682    }
1683
1684    /**
1685     * @return the height of one standard line in pixels.  Note that markup
1686     * within the text can cause individual lines to be taller or shorter
1687     * than this height, and the layout may contain additional first-
1688     * or last-line padding.
1689     */
1690    public int getLineHeight() {
1691        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1692    }
1693
1694    /**
1695     * @return the Layout that is currently being used to display the text.
1696     * This can be null if the text or width has recently changes.
1697     */
1698    public final Layout getLayout() {
1699        return mLayout;
1700    }
1701
1702    /**
1703     * @return the Layout that is currently being used to display the hint text.
1704     * This can be null.
1705     */
1706    final Layout getHintLayout() {
1707        return mHintLayout;
1708    }
1709
1710    /**
1711     * Retrieve the {@link android.content.UndoManager} that is currently associated
1712     * with this TextView.  By default there is no associated UndoManager, so null
1713     * is returned.  One can be associated with the TextView through
1714     * {@link #setUndoManager(android.content.UndoManager, String)}
1715     *
1716     * @hide
1717     */
1718    public final UndoManager getUndoManager() {
1719        // TODO: Consider supporting a global undo manager.
1720        throw new UnsupportedOperationException("not implemented");
1721    }
1722
1723
1724    /**
1725     * @hide
1726     */
1727    @VisibleForTesting
1728    public final Editor getEditorForTesting() {
1729        return mEditor;
1730    }
1731
1732    /**
1733     * Associate an {@link android.content.UndoManager} with this TextView.  Once
1734     * done, all edit operations on the TextView will result in appropriate
1735     * {@link android.content.UndoOperation} objects pushed on the given UndoManager's
1736     * stack.
1737     *
1738     * @param undoManager The {@link android.content.UndoManager} to associate with
1739     * this TextView, or null to clear any existing association.
1740     * @param tag String tag identifying this particular TextView owner in the
1741     * UndoManager.  This is used to keep the correct association with the
1742     * {@link android.content.UndoOwner} of any operations inside of the UndoManager.
1743     *
1744     * @hide
1745     */
1746    public final void setUndoManager(UndoManager undoManager, String tag) {
1747        // TODO: Consider supporting a global undo manager. An implementation will need to:
1748        // * createEditorIfNeeded()
1749        // * Promote to BufferType.EDITABLE if needed.
1750        // * Update the UndoManager and UndoOwner.
1751        // Likewise it will need to be able to restore the default UndoManager.
1752        throw new UnsupportedOperationException("not implemented");
1753    }
1754
1755    /**
1756     * @return the current key listener for this TextView.
1757     * This will frequently be null for non-EditText TextViews.
1758     *
1759     * @attr ref android.R.styleable#TextView_numeric
1760     * @attr ref android.R.styleable#TextView_digits
1761     * @attr ref android.R.styleable#TextView_phoneNumber
1762     * @attr ref android.R.styleable#TextView_inputMethod
1763     * @attr ref android.R.styleable#TextView_capitalize
1764     * @attr ref android.R.styleable#TextView_autoText
1765     */
1766    public final KeyListener getKeyListener() {
1767        return mEditor == null ? null : mEditor.mKeyListener;
1768    }
1769
1770    /**
1771     * Sets the key listener to be used with this TextView.  This can be null
1772     * to disallow user input.  Note that this method has significant and
1773     * subtle interactions with soft keyboards and other input method:
1774     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1775     * for important details.  Calling this method will replace the current
1776     * content type of the text view with the content type returned by the
1777     * key listener.
1778     * <p>
1779     * Be warned that if you want a TextView with a key listener or movement
1780     * method not to be focusable, or if you want a TextView without a
1781     * key listener or movement method to be focusable, you must call
1782     * {@link #setFocusable} again after calling this to get the focusability
1783     * back the way you want it.
1784     *
1785     * @attr ref android.R.styleable#TextView_numeric
1786     * @attr ref android.R.styleable#TextView_digits
1787     * @attr ref android.R.styleable#TextView_phoneNumber
1788     * @attr ref android.R.styleable#TextView_inputMethod
1789     * @attr ref android.R.styleable#TextView_capitalize
1790     * @attr ref android.R.styleable#TextView_autoText
1791     */
1792    public void setKeyListener(KeyListener input) {
1793        setKeyListenerOnly(input);
1794        fixFocusableAndClickableSettings();
1795
1796        if (input != null) {
1797            createEditorIfNeeded();
1798            try {
1799                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1800            } catch (IncompatibleClassChangeError e) {
1801                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1802            }
1803            // Change inputType, without affecting transformation.
1804            // No need to applySingleLine since mSingleLine is unchanged.
1805            setInputTypeSingleLine(mSingleLine);
1806        } else {
1807            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1808        }
1809
1810        InputMethodManager imm = InputMethodManager.peekInstance();
1811        if (imm != null) imm.restartInput(this);
1812    }
1813
1814    private void setKeyListenerOnly(KeyListener input) {
1815        if (mEditor == null && input == null) return; // null is the default value
1816
1817        createEditorIfNeeded();
1818        if (mEditor.mKeyListener != input) {
1819            mEditor.mKeyListener = input;
1820            if (input != null && !(mText instanceof Editable)) {
1821                setText(mText);
1822            }
1823
1824            setFilters((Editable) mText, mFilters);
1825        }
1826    }
1827
1828    /**
1829     * @return the movement method being used for this TextView.
1830     * This will frequently be null for non-EditText TextViews.
1831     */
1832    public final MovementMethod getMovementMethod() {
1833        return mMovement;
1834    }
1835
1836    /**
1837     * Sets the movement method (arrow key handler) to be used for
1838     * this TextView.  This can be null to disallow using the arrow keys
1839     * to move the cursor or scroll the view.
1840     * <p>
1841     * Be warned that if you want a TextView with a key listener or movement
1842     * method not to be focusable, or if you want a TextView without a
1843     * key listener or movement method to be focusable, you must call
1844     * {@link #setFocusable} again after calling this to get the focusability
1845     * back the way you want it.
1846     */
1847    public final void setMovementMethod(MovementMethod movement) {
1848        if (mMovement != movement) {
1849            mMovement = movement;
1850
1851            if (movement != null && !(mText instanceof Spannable)) {
1852                setText(mText);
1853            }
1854
1855            fixFocusableAndClickableSettings();
1856
1857            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1858            // mMovement
1859            if (mEditor != null) mEditor.prepareCursorControllers();
1860        }
1861    }
1862
1863    private void fixFocusableAndClickableSettings() {
1864        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1865            setFocusable(true);
1866            setClickable(true);
1867            setLongClickable(true);
1868        } else {
1869            setFocusable(false);
1870            setClickable(false);
1871            setLongClickable(false);
1872        }
1873    }
1874
1875    /**
1876     * @return the current transformation method for this TextView.
1877     * This will frequently be null except for single-line and password
1878     * fields.
1879     *
1880     * @attr ref android.R.styleable#TextView_password
1881     * @attr ref android.R.styleable#TextView_singleLine
1882     */
1883    public final TransformationMethod getTransformationMethod() {
1884        return mTransformation;
1885    }
1886
1887    /**
1888     * Sets the transformation that is applied to the text that this
1889     * TextView is displaying.
1890     *
1891     * @attr ref android.R.styleable#TextView_password
1892     * @attr ref android.R.styleable#TextView_singleLine
1893     */
1894    public final void setTransformationMethod(TransformationMethod method) {
1895        if (method == mTransformation) {
1896            // Avoid the setText() below if the transformation is
1897            // the same.
1898            return;
1899        }
1900        if (mTransformation != null) {
1901            if (mText instanceof Spannable) {
1902                ((Spannable) mText).removeSpan(mTransformation);
1903            }
1904        }
1905
1906        mTransformation = method;
1907
1908        if (method instanceof TransformationMethod2) {
1909            TransformationMethod2 method2 = (TransformationMethod2) method;
1910            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1911            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1912        } else {
1913            mAllowTransformationLengthChange = false;
1914        }
1915
1916        setText(mText);
1917
1918        if (hasPasswordTransformationMethod()) {
1919            notifyViewAccessibilityStateChangedIfNeeded(
1920                    AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
1921        }
1922    }
1923
1924    /**
1925     * Returns the top padding of the view, plus space for the top
1926     * Drawable if any.
1927     */
1928    public int getCompoundPaddingTop() {
1929        final Drawables dr = mDrawables;
1930        if (dr == null || dr.mShowing[Drawables.TOP] == null) {
1931            return mPaddingTop;
1932        } else {
1933            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1934        }
1935    }
1936
1937    /**
1938     * Returns the bottom padding of the view, plus space for the bottom
1939     * Drawable if any.
1940     */
1941    public int getCompoundPaddingBottom() {
1942        final Drawables dr = mDrawables;
1943        if (dr == null || dr.mShowing[Drawables.BOTTOM] == null) {
1944            return mPaddingBottom;
1945        } else {
1946            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1947        }
1948    }
1949
1950    /**
1951     * Returns the left padding of the view, plus space for the left
1952     * Drawable if any.
1953     */
1954    public int getCompoundPaddingLeft() {
1955        final Drawables dr = mDrawables;
1956        if (dr == null || dr.mShowing[Drawables.LEFT] == null) {
1957            return mPaddingLeft;
1958        } else {
1959            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1960        }
1961    }
1962
1963    /**
1964     * Returns the right padding of the view, plus space for the right
1965     * Drawable if any.
1966     */
1967    public int getCompoundPaddingRight() {
1968        final Drawables dr = mDrawables;
1969        if (dr == null || dr.mShowing[Drawables.RIGHT] == null) {
1970            return mPaddingRight;
1971        } else {
1972            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1973        }
1974    }
1975
1976    /**
1977     * Returns the start padding of the view, plus space for the start
1978     * Drawable if any.
1979     */
1980    public int getCompoundPaddingStart() {
1981        resolveDrawables();
1982        switch(getLayoutDirection()) {
1983            default:
1984            case LAYOUT_DIRECTION_LTR:
1985                return getCompoundPaddingLeft();
1986            case LAYOUT_DIRECTION_RTL:
1987                return getCompoundPaddingRight();
1988        }
1989    }
1990
1991    /**
1992     * Returns the end padding of the view, plus space for the end
1993     * Drawable if any.
1994     */
1995    public int getCompoundPaddingEnd() {
1996        resolveDrawables();
1997        switch(getLayoutDirection()) {
1998            default:
1999            case LAYOUT_DIRECTION_LTR:
2000                return getCompoundPaddingRight();
2001            case LAYOUT_DIRECTION_RTL:
2002                return getCompoundPaddingLeft();
2003        }
2004    }
2005
2006    /**
2007     * Returns the extended top padding of the view, including both the
2008     * top Drawable if any and any extra space to keep more than maxLines
2009     * of text from showing.  It is only valid to call this after measuring.
2010     */
2011    public int getExtendedPaddingTop() {
2012        if (mMaxMode != LINES) {
2013            return getCompoundPaddingTop();
2014        }
2015
2016        if (mLayout == null) {
2017            assumeLayout();
2018        }
2019
2020        if (mLayout.getLineCount() <= mMaximum) {
2021            return getCompoundPaddingTop();
2022        }
2023
2024        int top = getCompoundPaddingTop();
2025        int bottom = getCompoundPaddingBottom();
2026        int viewht = getHeight() - top - bottom;
2027        int layoutht = mLayout.getLineTop(mMaximum);
2028
2029        if (layoutht >= viewht) {
2030            return top;
2031        }
2032
2033        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2034        if (gravity == Gravity.TOP) {
2035            return top;
2036        } else if (gravity == Gravity.BOTTOM) {
2037            return top + viewht - layoutht;
2038        } else { // (gravity == Gravity.CENTER_VERTICAL)
2039            return top + (viewht - layoutht) / 2;
2040        }
2041    }
2042
2043    /**
2044     * Returns the extended bottom padding of the view, including both the
2045     * bottom Drawable if any and any extra space to keep more than maxLines
2046     * of text from showing.  It is only valid to call this after measuring.
2047     */
2048    public int getExtendedPaddingBottom() {
2049        if (mMaxMode != LINES) {
2050            return getCompoundPaddingBottom();
2051        }
2052
2053        if (mLayout == null) {
2054            assumeLayout();
2055        }
2056
2057        if (mLayout.getLineCount() <= mMaximum) {
2058            return getCompoundPaddingBottom();
2059        }
2060
2061        int top = getCompoundPaddingTop();
2062        int bottom = getCompoundPaddingBottom();
2063        int viewht = getHeight() - top - bottom;
2064        int layoutht = mLayout.getLineTop(mMaximum);
2065
2066        if (layoutht >= viewht) {
2067            return bottom;
2068        }
2069
2070        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2071        if (gravity == Gravity.TOP) {
2072            return bottom + viewht - layoutht;
2073        } else if (gravity == Gravity.BOTTOM) {
2074            return bottom;
2075        } else { // (gravity == Gravity.CENTER_VERTICAL)
2076            return bottom + (viewht - layoutht) / 2;
2077        }
2078    }
2079
2080    /**
2081     * Returns the total left padding of the view, including the left
2082     * Drawable if any.
2083     */
2084    public int getTotalPaddingLeft() {
2085        return getCompoundPaddingLeft();
2086    }
2087
2088    /**
2089     * Returns the total right padding of the view, including the right
2090     * Drawable if any.
2091     */
2092    public int getTotalPaddingRight() {
2093        return getCompoundPaddingRight();
2094    }
2095
2096    /**
2097     * Returns the total start padding of the view, including the start
2098     * Drawable if any.
2099     */
2100    public int getTotalPaddingStart() {
2101        return getCompoundPaddingStart();
2102    }
2103
2104    /**
2105     * Returns the total end padding of the view, including the end
2106     * Drawable if any.
2107     */
2108    public int getTotalPaddingEnd() {
2109        return getCompoundPaddingEnd();
2110    }
2111
2112    /**
2113     * Returns the total top padding of the view, including the top
2114     * Drawable if any, the extra space to keep more than maxLines
2115     * from showing, and the vertical offset for gravity, if any.
2116     */
2117    public int getTotalPaddingTop() {
2118        return getExtendedPaddingTop() + getVerticalOffset(true);
2119    }
2120
2121    /**
2122     * Returns the total bottom padding of the view, including the bottom
2123     * Drawable if any, the extra space to keep more than maxLines
2124     * from showing, and the vertical offset for gravity, if any.
2125     */
2126    public int getTotalPaddingBottom() {
2127        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
2128    }
2129
2130    /**
2131     * Sets the Drawables (if any) to appear to the left of, above, to the
2132     * right of, and below the text. Use {@code null} if you do not want a
2133     * Drawable there. The Drawables must already have had
2134     * {@link Drawable#setBounds} called.
2135     * <p>
2136     * Calling this method will overwrite any Drawables previously set using
2137     * {@link #setCompoundDrawablesRelative} or related methods.
2138     *
2139     * @attr ref android.R.styleable#TextView_drawableLeft
2140     * @attr ref android.R.styleable#TextView_drawableTop
2141     * @attr ref android.R.styleable#TextView_drawableRight
2142     * @attr ref android.R.styleable#TextView_drawableBottom
2143     */
2144    public void setCompoundDrawables(@Nullable Drawable left, @Nullable Drawable top,
2145            @Nullable Drawable right, @Nullable Drawable bottom) {
2146        Drawables dr = mDrawables;
2147
2148        // We're switching to absolute, discard relative.
2149        if (dr != null) {
2150            if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2151            dr.mDrawableStart = null;
2152            if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2153            dr.mDrawableEnd = null;
2154            dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2155            dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2156        }
2157
2158        final boolean drawables = left != null || top != null || right != null || bottom != null;
2159        if (!drawables) {
2160            // Clearing drawables...  can we free the data structure?
2161            if (dr != null) {
2162                if (dr.mDrawablePadding == 0) {
2163                    mDrawables = null;
2164                } else {
2165                    // We need to retain the last set padding, so just clear
2166                    // out all of the fields in the existing structure.
2167                    for (int i = dr.mShowing.length - 1; i >= 0; i--) {
2168                        if (dr.mShowing[i] != null) {
2169                            dr.mShowing[i].setCallback(null);
2170                        }
2171                        dr.mShowing[i] = null;
2172                    }
2173                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2174                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2175                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2176                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2177                }
2178            }
2179        } else {
2180            if (dr == null) {
2181                mDrawables = dr = new Drawables(getContext());
2182            }
2183
2184            mDrawables.mOverride = false;
2185
2186            if (dr.mShowing[Drawables.LEFT] != left && dr.mShowing[Drawables.LEFT] != null) {
2187                dr.mShowing[Drawables.LEFT].setCallback(null);
2188            }
2189            dr.mShowing[Drawables.LEFT] = left;
2190
2191            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2192                dr.mShowing[Drawables.TOP].setCallback(null);
2193            }
2194            dr.mShowing[Drawables.TOP] = top;
2195
2196            if (dr.mShowing[Drawables.RIGHT] != right && dr.mShowing[Drawables.RIGHT] != null) {
2197                dr.mShowing[Drawables.RIGHT].setCallback(null);
2198            }
2199            dr.mShowing[Drawables.RIGHT] = right;
2200
2201            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2202                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2203            }
2204            dr.mShowing[Drawables.BOTTOM] = bottom;
2205
2206            final Rect compoundRect = dr.mCompoundRect;
2207            int[] state;
2208
2209            state = getDrawableState();
2210
2211            if (left != null) {
2212                left.setState(state);
2213                left.copyBounds(compoundRect);
2214                left.setCallback(this);
2215                dr.mDrawableSizeLeft = compoundRect.width();
2216                dr.mDrawableHeightLeft = compoundRect.height();
2217            } else {
2218                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2219            }
2220
2221            if (right != null) {
2222                right.setState(state);
2223                right.copyBounds(compoundRect);
2224                right.setCallback(this);
2225                dr.mDrawableSizeRight = compoundRect.width();
2226                dr.mDrawableHeightRight = compoundRect.height();
2227            } else {
2228                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2229            }
2230
2231            if (top != null) {
2232                top.setState(state);
2233                top.copyBounds(compoundRect);
2234                top.setCallback(this);
2235                dr.mDrawableSizeTop = compoundRect.height();
2236                dr.mDrawableWidthTop = compoundRect.width();
2237            } else {
2238                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2239            }
2240
2241            if (bottom != null) {
2242                bottom.setState(state);
2243                bottom.copyBounds(compoundRect);
2244                bottom.setCallback(this);
2245                dr.mDrawableSizeBottom = compoundRect.height();
2246                dr.mDrawableWidthBottom = compoundRect.width();
2247            } else {
2248                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2249            }
2250        }
2251
2252        // Save initial left/right drawables
2253        if (dr != null) {
2254            dr.mDrawableLeftInitial = left;
2255            dr.mDrawableRightInitial = right;
2256        }
2257
2258        resetResolvedDrawables();
2259        resolveDrawables();
2260        applyCompoundDrawableTint();
2261        invalidate();
2262        requestLayout();
2263    }
2264
2265    /**
2266     * Sets the Drawables (if any) to appear to the left of, above, to the
2267     * right of, and below the text. Use 0 if you do not want a Drawable there.
2268     * The Drawables' bounds will be set to their intrinsic bounds.
2269     * <p>
2270     * Calling this method will overwrite any Drawables previously set using
2271     * {@link #setCompoundDrawablesRelative} or related methods.
2272     *
2273     * @param left Resource identifier of the left Drawable.
2274     * @param top Resource identifier of the top Drawable.
2275     * @param right Resource identifier of the right Drawable.
2276     * @param bottom Resource identifier of the bottom Drawable.
2277     *
2278     * @attr ref android.R.styleable#TextView_drawableLeft
2279     * @attr ref android.R.styleable#TextView_drawableTop
2280     * @attr ref android.R.styleable#TextView_drawableRight
2281     * @attr ref android.R.styleable#TextView_drawableBottom
2282     */
2283    @android.view.RemotableViewMethod
2284    public void setCompoundDrawablesWithIntrinsicBounds(@DrawableRes int left,
2285            @DrawableRes int top, @DrawableRes int right, @DrawableRes int bottom) {
2286        final Context context = getContext();
2287        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? context.getDrawable(left) : null,
2288                top != 0 ? context.getDrawable(top) : null,
2289                right != 0 ? context.getDrawable(right) : null,
2290                bottom != 0 ? context.getDrawable(bottom) : null);
2291    }
2292
2293    /**
2294     * Sets the Drawables (if any) to appear to the left of, above, to the
2295     * right of, and below the text. Use {@code null} if you do not want a
2296     * Drawable there. The Drawables' bounds will be set to their intrinsic
2297     * bounds.
2298     * <p>
2299     * Calling this method will overwrite any Drawables previously set using
2300     * {@link #setCompoundDrawablesRelative} or related methods.
2301     *
2302     * @attr ref android.R.styleable#TextView_drawableLeft
2303     * @attr ref android.R.styleable#TextView_drawableTop
2304     * @attr ref android.R.styleable#TextView_drawableRight
2305     * @attr ref android.R.styleable#TextView_drawableBottom
2306     */
2307    @android.view.RemotableViewMethod
2308    public void setCompoundDrawablesWithIntrinsicBounds(@Nullable Drawable left,
2309            @Nullable Drawable top, @Nullable Drawable right, @Nullable Drawable bottom) {
2310
2311        if (left != null) {
2312            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
2313        }
2314        if (right != null) {
2315            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
2316        }
2317        if (top != null) {
2318            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2319        }
2320        if (bottom != null) {
2321            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2322        }
2323        setCompoundDrawables(left, top, right, bottom);
2324    }
2325
2326    /**
2327     * Sets the Drawables (if any) to appear to the start of, above, to the end
2328     * of, and below the text. Use {@code null} if you do not want a Drawable
2329     * there. The Drawables must already have had {@link Drawable#setBounds}
2330     * called.
2331     * <p>
2332     * Calling this method will overwrite any Drawables previously set using
2333     * {@link #setCompoundDrawables} or related methods.
2334     *
2335     * @attr ref android.R.styleable#TextView_drawableStart
2336     * @attr ref android.R.styleable#TextView_drawableTop
2337     * @attr ref android.R.styleable#TextView_drawableEnd
2338     * @attr ref android.R.styleable#TextView_drawableBottom
2339     */
2340    @android.view.RemotableViewMethod
2341    public void setCompoundDrawablesRelative(@Nullable Drawable start, @Nullable Drawable top,
2342            @Nullable Drawable end, @Nullable Drawable bottom) {
2343        Drawables dr = mDrawables;
2344
2345        // We're switching to relative, discard absolute.
2346        if (dr != null) {
2347            if (dr.mShowing[Drawables.LEFT] != null) {
2348                dr.mShowing[Drawables.LEFT].setCallback(null);
2349            }
2350            dr.mShowing[Drawables.LEFT] = dr.mDrawableLeftInitial = null;
2351            if (dr.mShowing[Drawables.RIGHT] != null) {
2352                dr.mShowing[Drawables.RIGHT].setCallback(null);
2353            }
2354            dr.mShowing[Drawables.RIGHT] = dr.mDrawableRightInitial = null;
2355            dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2356            dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2357        }
2358
2359        final boolean drawables = start != null || top != null
2360                || end != null || bottom != null;
2361
2362        if (!drawables) {
2363            // Clearing drawables...  can we free the data structure?
2364            if (dr != null) {
2365                if (dr.mDrawablePadding == 0) {
2366                    mDrawables = null;
2367                } else {
2368                    // We need to retain the last set padding, so just clear
2369                    // out all of the fields in the existing structure.
2370                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2371                    dr.mDrawableStart = null;
2372                    if (dr.mShowing[Drawables.TOP] != null) {
2373                        dr.mShowing[Drawables.TOP].setCallback(null);
2374                    }
2375                    dr.mShowing[Drawables.TOP] = null;
2376                    if (dr.mDrawableEnd != null) {
2377                        dr.mDrawableEnd.setCallback(null);
2378                    }
2379                    dr.mDrawableEnd = null;
2380                    if (dr.mShowing[Drawables.BOTTOM] != null) {
2381                        dr.mShowing[Drawables.BOTTOM].setCallback(null);
2382                    }
2383                    dr.mShowing[Drawables.BOTTOM] = null;
2384                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2385                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2386                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2387                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2388                }
2389            }
2390        } else {
2391            if (dr == null) {
2392                mDrawables = dr = new Drawables(getContext());
2393            }
2394
2395            mDrawables.mOverride = true;
2396
2397            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
2398                dr.mDrawableStart.setCallback(null);
2399            }
2400            dr.mDrawableStart = start;
2401
2402            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2403                dr.mShowing[Drawables.TOP].setCallback(null);
2404            }
2405            dr.mShowing[Drawables.TOP] = top;
2406
2407            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
2408                dr.mDrawableEnd.setCallback(null);
2409            }
2410            dr.mDrawableEnd = end;
2411
2412            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2413                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2414            }
2415            dr.mShowing[Drawables.BOTTOM] = bottom;
2416
2417            final Rect compoundRect = dr.mCompoundRect;
2418            int[] state;
2419
2420            state = getDrawableState();
2421
2422            if (start != null) {
2423                start.setState(state);
2424                start.copyBounds(compoundRect);
2425                start.setCallback(this);
2426                dr.mDrawableSizeStart = compoundRect.width();
2427                dr.mDrawableHeightStart = compoundRect.height();
2428            } else {
2429                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2430            }
2431
2432            if (end != null) {
2433                end.setState(state);
2434                end.copyBounds(compoundRect);
2435                end.setCallback(this);
2436                dr.mDrawableSizeEnd = compoundRect.width();
2437                dr.mDrawableHeightEnd = compoundRect.height();
2438            } else {
2439                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2440            }
2441
2442            if (top != null) {
2443                top.setState(state);
2444                top.copyBounds(compoundRect);
2445                top.setCallback(this);
2446                dr.mDrawableSizeTop = compoundRect.height();
2447                dr.mDrawableWidthTop = compoundRect.width();
2448            } else {
2449                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2450            }
2451
2452            if (bottom != null) {
2453                bottom.setState(state);
2454                bottom.copyBounds(compoundRect);
2455                bottom.setCallback(this);
2456                dr.mDrawableSizeBottom = compoundRect.height();
2457                dr.mDrawableWidthBottom = compoundRect.width();
2458            } else {
2459                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2460            }
2461        }
2462
2463        resetResolvedDrawables();
2464        resolveDrawables();
2465        invalidate();
2466        requestLayout();
2467    }
2468
2469    /**
2470     * Sets the Drawables (if any) to appear to the start of, above, to the end
2471     * of, and below the text. Use 0 if you do not want a Drawable there. The
2472     * Drawables' bounds will be set to their intrinsic bounds.
2473     * <p>
2474     * Calling this method will overwrite any Drawables previously set using
2475     * {@link #setCompoundDrawables} or related methods.
2476     *
2477     * @param start Resource identifier of the start Drawable.
2478     * @param top Resource identifier of the top Drawable.
2479     * @param end Resource identifier of the end Drawable.
2480     * @param bottom Resource identifier of the bottom Drawable.
2481     *
2482     * @attr ref android.R.styleable#TextView_drawableStart
2483     * @attr ref android.R.styleable#TextView_drawableTop
2484     * @attr ref android.R.styleable#TextView_drawableEnd
2485     * @attr ref android.R.styleable#TextView_drawableBottom
2486     */
2487    @android.view.RemotableViewMethod
2488    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@DrawableRes int start,
2489            @DrawableRes int top, @DrawableRes int end, @DrawableRes int bottom) {
2490        final Context context = getContext();
2491        setCompoundDrawablesRelativeWithIntrinsicBounds(
2492                start != 0 ? context.getDrawable(start) : null,
2493                top != 0 ? context.getDrawable(top) : null,
2494                end != 0 ? context.getDrawable(end) : null,
2495                bottom != 0 ? context.getDrawable(bottom) : null);
2496    }
2497
2498    /**
2499     * Sets the Drawables (if any) to appear to the start of, above, to the end
2500     * of, and below the text. Use {@code null} if you do not want a Drawable
2501     * there. The Drawables' bounds will be set to their intrinsic bounds.
2502     * <p>
2503     * Calling this method will overwrite any Drawables previously set using
2504     * {@link #setCompoundDrawables} or related methods.
2505     *
2506     * @attr ref android.R.styleable#TextView_drawableStart
2507     * @attr ref android.R.styleable#TextView_drawableTop
2508     * @attr ref android.R.styleable#TextView_drawableEnd
2509     * @attr ref android.R.styleable#TextView_drawableBottom
2510     */
2511    @android.view.RemotableViewMethod
2512    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@Nullable Drawable start,
2513            @Nullable Drawable top, @Nullable Drawable end, @Nullable Drawable bottom) {
2514
2515        if (start != null) {
2516            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2517        }
2518        if (end != null) {
2519            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2520        }
2521        if (top != null) {
2522            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2523        }
2524        if (bottom != null) {
2525            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2526        }
2527        setCompoundDrawablesRelative(start, top, end, bottom);
2528    }
2529
2530    /**
2531     * Returns drawables for the left, top, right, and bottom borders.
2532     *
2533     * @attr ref android.R.styleable#TextView_drawableLeft
2534     * @attr ref android.R.styleable#TextView_drawableTop
2535     * @attr ref android.R.styleable#TextView_drawableRight
2536     * @attr ref android.R.styleable#TextView_drawableBottom
2537     */
2538    @NonNull
2539    public Drawable[] getCompoundDrawables() {
2540        final Drawables dr = mDrawables;
2541        if (dr != null) {
2542            return dr.mShowing.clone();
2543        } else {
2544            return new Drawable[] { null, null, null, null };
2545        }
2546    }
2547
2548    /**
2549     * Returns drawables for the start, top, end, and bottom borders.
2550     *
2551     * @attr ref android.R.styleable#TextView_drawableStart
2552     * @attr ref android.R.styleable#TextView_drawableTop
2553     * @attr ref android.R.styleable#TextView_drawableEnd
2554     * @attr ref android.R.styleable#TextView_drawableBottom
2555     */
2556    @NonNull
2557    public Drawable[] getCompoundDrawablesRelative() {
2558        final Drawables dr = mDrawables;
2559        if (dr != null) {
2560            return new Drawable[] {
2561                dr.mDrawableStart, dr.mShowing[Drawables.TOP],
2562                dr.mDrawableEnd, dr.mShowing[Drawables.BOTTOM]
2563            };
2564        } else {
2565            return new Drawable[] { null, null, null, null };
2566        }
2567    }
2568
2569    /**
2570     * Sets the size of the padding between the compound drawables and
2571     * the text.
2572     *
2573     * @attr ref android.R.styleable#TextView_drawablePadding
2574     */
2575    @android.view.RemotableViewMethod
2576    public void setCompoundDrawablePadding(int pad) {
2577        Drawables dr = mDrawables;
2578        if (pad == 0) {
2579            if (dr != null) {
2580                dr.mDrawablePadding = pad;
2581            }
2582        } else {
2583            if (dr == null) {
2584                mDrawables = dr = new Drawables(getContext());
2585            }
2586            dr.mDrawablePadding = pad;
2587        }
2588
2589        invalidate();
2590        requestLayout();
2591    }
2592
2593    /**
2594     * Returns the padding between the compound drawables and the text.
2595     *
2596     * @attr ref android.R.styleable#TextView_drawablePadding
2597     */
2598    public int getCompoundDrawablePadding() {
2599        final Drawables dr = mDrawables;
2600        return dr != null ? dr.mDrawablePadding : 0;
2601    }
2602
2603    /**
2604     * Applies a tint to the compound drawables. Does not modify the
2605     * current tint mode, which is {@link PorterDuff.Mode#SRC_IN} by default.
2606     * <p>
2607     * Subsequent calls to
2608     * {@link #setCompoundDrawables(Drawable, Drawable, Drawable, Drawable)}
2609     * and related methods will automatically mutate the drawables and apply
2610     * the specified tint and tint mode using
2611     * {@link Drawable#setTintList(ColorStateList)}.
2612     *
2613     * @param tint the tint to apply, may be {@code null} to clear tint
2614     *
2615     * @attr ref android.R.styleable#TextView_drawableTint
2616     * @see #getCompoundDrawableTintList()
2617     * @see Drawable#setTintList(ColorStateList)
2618     */
2619    public void setCompoundDrawableTintList(@Nullable ColorStateList tint) {
2620        if (mDrawables == null) {
2621            mDrawables = new Drawables(getContext());
2622        }
2623        mDrawables.mTintList = tint;
2624        mDrawables.mHasTint = true;
2625
2626        applyCompoundDrawableTint();
2627    }
2628
2629    /**
2630     * @return the tint applied to the compound drawables
2631     * @attr ref android.R.styleable#TextView_drawableTint
2632     * @see #setCompoundDrawableTintList(ColorStateList)
2633     */
2634    public ColorStateList getCompoundDrawableTintList() {
2635        return mDrawables != null ? mDrawables.mTintList : null;
2636    }
2637
2638    /**
2639     * Specifies the blending mode used to apply the tint specified by
2640     * {@link #setCompoundDrawableTintList(ColorStateList)} to the compound
2641     * drawables. The default mode is {@link PorterDuff.Mode#SRC_IN}.
2642     *
2643     * @param tintMode the blending mode used to apply the tint, may be
2644     *                 {@code null} to clear tint
2645     * @attr ref android.R.styleable#TextView_drawableTintMode
2646     * @see #setCompoundDrawableTintList(ColorStateList)
2647     * @see Drawable#setTintMode(PorterDuff.Mode)
2648     */
2649    public void setCompoundDrawableTintMode(@Nullable PorterDuff.Mode tintMode) {
2650        if (mDrawables == null) {
2651            mDrawables = new Drawables(getContext());
2652        }
2653        mDrawables.mTintMode = tintMode;
2654        mDrawables.mHasTintMode = true;
2655
2656        applyCompoundDrawableTint();
2657    }
2658
2659    /**
2660     * Returns the blending mode used to apply the tint to the compound
2661     * drawables, if specified.
2662     *
2663     * @return the blending mode used to apply the tint to the compound
2664     *         drawables
2665     * @attr ref android.R.styleable#TextView_drawableTintMode
2666     * @see #setCompoundDrawableTintMode(PorterDuff.Mode)
2667     */
2668    public PorterDuff.Mode getCompoundDrawableTintMode() {
2669        return mDrawables != null ? mDrawables.mTintMode : null;
2670    }
2671
2672    private void applyCompoundDrawableTint() {
2673        if (mDrawables == null) {
2674            return;
2675        }
2676
2677        if (mDrawables.mHasTint || mDrawables.mHasTintMode) {
2678            final ColorStateList tintList = mDrawables.mTintList;
2679            final PorterDuff.Mode tintMode = mDrawables.mTintMode;
2680            final boolean hasTint = mDrawables.mHasTint;
2681            final boolean hasTintMode = mDrawables.mHasTintMode;
2682            final int[] state = getDrawableState();
2683
2684            for (Drawable dr : mDrawables.mShowing) {
2685                if (dr == null) {
2686                    continue;
2687                }
2688
2689                if (dr == mDrawables.mDrawableError) {
2690                    // From a developer's perspective, the error drawable isn't
2691                    // a compound drawable. Don't apply the generic compound
2692                    // drawable tint to it.
2693                    continue;
2694                }
2695
2696                dr.mutate();
2697
2698                if (hasTint) {
2699                    dr.setTintList(tintList);
2700                }
2701
2702                if (hasTintMode) {
2703                    dr.setTintMode(tintMode);
2704                }
2705
2706                // The drawable (or one of its children) may not have been
2707                // stateful before applying the tint, so let's try again.
2708                if (dr.isStateful()) {
2709                    dr.setState(state);
2710                }
2711            }
2712        }
2713    }
2714
2715    @Override
2716    public void setPadding(int left, int top, int right, int bottom) {
2717        if (left != mPaddingLeft ||
2718            right != mPaddingRight ||
2719            top != mPaddingTop ||
2720            bottom != mPaddingBottom) {
2721            nullLayouts();
2722        }
2723
2724        // the super call will requestLayout()
2725        super.setPadding(left, top, right, bottom);
2726        invalidate();
2727    }
2728
2729    @Override
2730    public void setPaddingRelative(int start, int top, int end, int bottom) {
2731        if (start != getPaddingStart() ||
2732            end != getPaddingEnd() ||
2733            top != mPaddingTop ||
2734            bottom != mPaddingBottom) {
2735            nullLayouts();
2736        }
2737
2738        // the super call will requestLayout()
2739        super.setPaddingRelative(start, top, end, bottom);
2740        invalidate();
2741    }
2742
2743    /**
2744     * Gets the autolink mask of the text.  See {@link
2745     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2746     * possible values.
2747     *
2748     * @attr ref android.R.styleable#TextView_autoLink
2749     */
2750    public final int getAutoLinkMask() {
2751        return mAutoLinkMask;
2752    }
2753
2754    /**
2755     * Sets the text appearance from the specified style resource.
2756     * <p>
2757     * Use a framework-defined {@code TextAppearance} style like
2758     * {@link android.R.style#TextAppearance_Material_Body1 @android:style/TextAppearance.Material.Body1}
2759     * or see {@link android.R.styleable#TextAppearance TextAppearance} for the
2760     * set of attributes that can be used in a custom style.
2761     *
2762     * @param resId the resource identifier of the style to apply
2763     * @attr ref android.R.styleable#TextView_textAppearance
2764     */
2765    @SuppressWarnings("deprecation")
2766    public void setTextAppearance(@StyleRes int resId) {
2767        setTextAppearance(mContext, resId);
2768    }
2769
2770    /**
2771     * Sets the text color, size, style, hint color, and highlight color
2772     * from the specified TextAppearance resource.
2773     *
2774     * @deprecated Use {@link #setTextAppearance(int)} instead.
2775     */
2776    @Deprecated
2777    public void setTextAppearance(Context context, @StyleRes int resId) {
2778        final TypedArray ta = context.obtainStyledAttributes(resId, R.styleable.TextAppearance);
2779
2780        final int textColorHighlight = ta.getColor(
2781                R.styleable.TextAppearance_textColorHighlight, 0);
2782        if (textColorHighlight != 0) {
2783            setHighlightColor(textColorHighlight);
2784        }
2785
2786        final ColorStateList textColor = ta.getColorStateList(R.styleable.TextAppearance_textColor);
2787        if (textColor != null) {
2788            setTextColor(textColor);
2789        }
2790
2791        final int textSize = ta.getDimensionPixelSize(R.styleable.TextAppearance_textSize, 0);
2792        if (textSize != 0) {
2793            setRawTextSize(textSize);
2794        }
2795
2796        final ColorStateList textColorHint = ta.getColorStateList(
2797                R.styleable.TextAppearance_textColorHint);
2798        if (textColorHint != null) {
2799            setHintTextColor(textColorHint);
2800        }
2801
2802        final ColorStateList textColorLink = ta.getColorStateList(
2803                R.styleable.TextAppearance_textColorLink);
2804        if (textColorLink != null) {
2805            setLinkTextColor(textColorLink);
2806        }
2807
2808        final String fontFamily = ta.getString(R.styleable.TextAppearance_fontFamily);
2809        final int typefaceIndex = ta.getInt(R.styleable.TextAppearance_typeface, -1);
2810        final int styleIndex = ta.getInt(R.styleable.TextAppearance_textStyle, -1);
2811        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
2812
2813        final int shadowColor = ta.getInt(R.styleable.TextAppearance_shadowColor, 0);
2814        if (shadowColor != 0) {
2815            final float dx = ta.getFloat(R.styleable.TextAppearance_shadowDx, 0);
2816            final float dy = ta.getFloat(R.styleable.TextAppearance_shadowDy, 0);
2817            final float r = ta.getFloat(R.styleable.TextAppearance_shadowRadius, 0);
2818            setShadowLayer(r, dx, dy, shadowColor);
2819        }
2820
2821        if (ta.getBoolean(R.styleable.TextAppearance_textAllCaps, false)) {
2822            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2823        }
2824
2825        if (ta.hasValue(R.styleable.TextAppearance_elegantTextHeight)) {
2826            setElegantTextHeight(ta.getBoolean(
2827                R.styleable.TextAppearance_elegantTextHeight, false));
2828        }
2829
2830        if (ta.hasValue(R.styleable.TextAppearance_letterSpacing)) {
2831            setLetterSpacing(ta.getFloat(
2832                R.styleable.TextAppearance_letterSpacing, 0));
2833        }
2834
2835        if (ta.hasValue(R.styleable.TextAppearance_fontFeatureSettings)) {
2836            setFontFeatureSettings(ta.getString(
2837                R.styleable.TextAppearance_fontFeatureSettings));
2838        }
2839
2840        ta.recycle();
2841    }
2842
2843    /**
2844     * Get the default primary {@link Locale} of the text in this TextView. This will always be
2845     * the first member of {@link #getTextLocales()}.
2846     * @return the default primary {@link Locale} of the text in this TextView.
2847     */
2848    @NonNull
2849    public Locale getTextLocale() {
2850        return mTextPaint.getTextLocale();
2851    }
2852
2853    /**
2854     * Get the default {@link LocaleList} of the text in this TextView.
2855     * @return the default {@link LocaleList} of the text in this TextView.
2856     */
2857    @NonNull @Size(min=1)
2858    public LocaleList getTextLocales() {
2859        return mTextPaint.getTextLocales();
2860    }
2861
2862    /**
2863     * Set the default {@link LocaleList} of the text in this TextView to a one-member list
2864     * containing just the given value.
2865     *
2866     * @param locale the {@link Locale} for drawing text, must not be null.
2867     *
2868     * @see #setTextLocales
2869     */
2870    public void setTextLocale(@NonNull Locale locale) {
2871        mLocalesChanged = true;
2872        mTextPaint.setTextLocale(locale);
2873    }
2874
2875    /**
2876     * Set the default {@link LocaleList} of the text in this TextView to the given value.
2877     *
2878     * This value is used to choose appropriate typefaces for ambiguous characters (typically used
2879     * for CJK locales to disambiguate Hanzi/Kanji/Hanja characters). It also affects
2880     * other aspects of text display, including line breaking.
2881     *
2882     * @param locales the {@link LocaleList} for drawing text, must not be null or empty.
2883     *
2884     * @see Paint#setTextLocales
2885     */
2886    public void setTextLocales(@NonNull @Size(min=1) LocaleList locales) {
2887        mLocalesChanged = true;
2888        mTextPaint.setTextLocales(locales);
2889    }
2890
2891    @Override
2892    protected void onConfigurationChanged(Configuration newConfig) {
2893        super.onConfigurationChanged(newConfig);
2894        if (!mLocalesChanged) {
2895            mTextPaint.setTextLocales(LocaleList.getDefault());
2896        }
2897    }
2898
2899    /**
2900     * @return the size (in pixels) of the default text size in this TextView.
2901     */
2902    @ViewDebug.ExportedProperty(category = "text")
2903    public float getTextSize() {
2904        return mTextPaint.getTextSize();
2905    }
2906
2907    /**
2908     * @return the size (in scaled pixels) of thee default text size in this TextView.
2909     * @hide
2910     */
2911    @ViewDebug.ExportedProperty(category = "text")
2912    public float getScaledTextSize() {
2913        return mTextPaint.getTextSize() / mTextPaint.density;
2914    }
2915
2916    /** @hide */
2917    @ViewDebug.ExportedProperty(category = "text", mapping = {
2918            @ViewDebug.IntToString(from = Typeface.NORMAL, to = "NORMAL"),
2919            @ViewDebug.IntToString(from = Typeface.BOLD, to = "BOLD"),
2920            @ViewDebug.IntToString(from = Typeface.ITALIC, to = "ITALIC"),
2921            @ViewDebug.IntToString(from = Typeface.BOLD_ITALIC, to = "BOLD_ITALIC")
2922    })
2923    public int getTypefaceStyle() {
2924        Typeface typeface = mTextPaint.getTypeface();
2925        return typeface != null ? typeface.getStyle() : Typeface.NORMAL;
2926    }
2927
2928    /**
2929     * Set the default text size to the given value, interpreted as "scaled
2930     * pixel" units.  This size is adjusted based on the current density and
2931     * user font size preference.
2932     *
2933     * @param size The scaled pixel size.
2934     *
2935     * @attr ref android.R.styleable#TextView_textSize
2936     */
2937    @android.view.RemotableViewMethod
2938    public void setTextSize(float size) {
2939        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2940    }
2941
2942    /**
2943     * Set the default text size to a given unit and value.  See {@link
2944     * TypedValue} for the possible dimension units.
2945     *
2946     * @param unit The desired dimension unit.
2947     * @param size The desired size in the given units.
2948     *
2949     * @attr ref android.R.styleable#TextView_textSize
2950     */
2951    public void setTextSize(int unit, float size) {
2952        Context c = getContext();
2953        Resources r;
2954
2955        if (c == null)
2956            r = Resources.getSystem();
2957        else
2958            r = c.getResources();
2959
2960        setRawTextSize(TypedValue.applyDimension(
2961                unit, size, r.getDisplayMetrics()));
2962    }
2963
2964    private void setRawTextSize(float size) {
2965        if (size != mTextPaint.getTextSize()) {
2966            mTextPaint.setTextSize(size);
2967
2968            if (mLayout != null) {
2969                nullLayouts();
2970                requestLayout();
2971                invalidate();
2972            }
2973        }
2974    }
2975
2976    /**
2977     * @return the extent by which text is currently being stretched
2978     * horizontally.  This will usually be 1.
2979     */
2980    public float getTextScaleX() {
2981        return mTextPaint.getTextScaleX();
2982    }
2983
2984    /**
2985     * Sets the extent by which text should be stretched horizontally.
2986     *
2987     * @attr ref android.R.styleable#TextView_textScaleX
2988     */
2989    @android.view.RemotableViewMethod
2990    public void setTextScaleX(float size) {
2991        if (size != mTextPaint.getTextScaleX()) {
2992            mUserSetTextScaleX = true;
2993            mTextPaint.setTextScaleX(size);
2994
2995            if (mLayout != null) {
2996                nullLayouts();
2997                requestLayout();
2998                invalidate();
2999            }
3000        }
3001    }
3002
3003    /**
3004     * Sets the typeface and style in which the text should be displayed.
3005     * Note that not all Typeface families actually have bold and italic
3006     * variants, so you may need to use
3007     * {@link #setTypeface(Typeface, int)} to get the appearance
3008     * that you actually want.
3009     *
3010     * @see #getTypeface()
3011     *
3012     * @attr ref android.R.styleable#TextView_fontFamily
3013     * @attr ref android.R.styleable#TextView_typeface
3014     * @attr ref android.R.styleable#TextView_textStyle
3015     */
3016    public void setTypeface(Typeface tf) {
3017        if (mTextPaint.getTypeface() != tf) {
3018            mTextPaint.setTypeface(tf);
3019
3020            if (mLayout != null) {
3021                nullLayouts();
3022                requestLayout();
3023                invalidate();
3024            }
3025        }
3026    }
3027
3028    /**
3029     * @return the current typeface and style in which the text is being
3030     * displayed.
3031     *
3032     * @see #setTypeface(Typeface)
3033     *
3034     * @attr ref android.R.styleable#TextView_fontFamily
3035     * @attr ref android.R.styleable#TextView_typeface
3036     * @attr ref android.R.styleable#TextView_textStyle
3037     */
3038    public Typeface getTypeface() {
3039        return mTextPaint.getTypeface();
3040    }
3041
3042    /**
3043     * Set the TextView's elegant height metrics flag. This setting selects font
3044     * variants that have not been compacted to fit Latin-based vertical
3045     * metrics, and also increases top and bottom bounds to provide more space.
3046     *
3047     * @param elegant set the paint's elegant metrics flag.
3048     *
3049     * @attr ref android.R.styleable#TextView_elegantTextHeight
3050     */
3051    public void setElegantTextHeight(boolean elegant) {
3052        mTextPaint.setElegantTextHeight(elegant);
3053    }
3054
3055    /**
3056     * @return the extent by which text is currently being letter-spaced.
3057     * This will normally be 0.
3058     *
3059     * @see #setLetterSpacing(float)
3060     * @see Paint#setLetterSpacing
3061     */
3062    public float getLetterSpacing() {
3063        return mTextPaint.getLetterSpacing();
3064    }
3065
3066    /**
3067     * Sets text letter-spacing.  The value is in 'EM' units.  Typical values
3068     * for slight expansion will be around 0.05.  Negative values tighten text.
3069     *
3070     * @see #getLetterSpacing()
3071     * @see Paint#getLetterSpacing
3072     *
3073     * @attr ref android.R.styleable#TextView_letterSpacing
3074     */
3075    @android.view.RemotableViewMethod
3076    public void setLetterSpacing(float letterSpacing) {
3077        if (letterSpacing != mTextPaint.getLetterSpacing()) {
3078            mTextPaint.setLetterSpacing(letterSpacing);
3079
3080            if (mLayout != null) {
3081                nullLayouts();
3082                requestLayout();
3083                invalidate();
3084            }
3085        }
3086    }
3087
3088    /**
3089     * @return the currently set font feature settings.  Default is null.
3090     *
3091     * @see #setFontFeatureSettings(String)
3092     * @see Paint#setFontFeatureSettings
3093     */
3094    @Nullable
3095    public String getFontFeatureSettings() {
3096        return mTextPaint.getFontFeatureSettings();
3097    }
3098
3099    /**
3100     * Sets the break strategy for breaking paragraphs into lines. The default value for
3101     * TextView is {@link Layout#BREAK_STRATEGY_HIGH_QUALITY}, and the default value for
3102     * EditText is {@link Layout#BREAK_STRATEGY_SIMPLE}, the latter to avoid the
3103     * text "dancing" when being edited.
3104     *
3105     * @attr ref android.R.styleable#TextView_breakStrategy
3106     * @see #getBreakStrategy()
3107     */
3108    public void setBreakStrategy(@Layout.BreakStrategy int breakStrategy) {
3109        mBreakStrategy = breakStrategy;
3110        if (mLayout != null) {
3111            nullLayouts();
3112            requestLayout();
3113            invalidate();
3114        }
3115    }
3116
3117    /**
3118     * @return the currently set break strategy.
3119     *
3120     * @attr ref android.R.styleable#TextView_breakStrategy
3121     * @see #setBreakStrategy(int)
3122     */
3123    @Layout.BreakStrategy
3124    public int getBreakStrategy() {
3125        return mBreakStrategy;
3126    }
3127
3128    /**
3129     * Sets the hyphenation frequency. The default value for both TextView and EditText, which is set
3130     * from the theme, is {@link Layout#HYPHENATION_FREQUENCY_NORMAL}.
3131     *
3132     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3133     * @see #getHyphenationFrequency()
3134     */
3135    public void setHyphenationFrequency(@Layout.HyphenationFrequency int hyphenationFrequency) {
3136        mHyphenationFrequency = hyphenationFrequency;
3137        if (mLayout != null) {
3138            nullLayouts();
3139            requestLayout();
3140            invalidate();
3141        }
3142    }
3143
3144    /**
3145     * @return the currently set hyphenation frequency.
3146     *
3147     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3148     * @see #setHyphenationFrequency(int)
3149     */
3150    @Layout.HyphenationFrequency
3151    public int getHyphenationFrequency() {
3152        return mHyphenationFrequency;
3153    }
3154
3155    /**
3156     * Sets font feature settings.  The format is the same as the CSS
3157     * font-feature-settings attribute:
3158     * http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings
3159     *
3160     * @param fontFeatureSettings font feature settings represented as CSS compatible string
3161     * @see #getFontFeatureSettings()
3162     * @see Paint#getFontFeatureSettings
3163     *
3164     * @attr ref android.R.styleable#TextView_fontFeatureSettings
3165     */
3166    @android.view.RemotableViewMethod
3167    public void setFontFeatureSettings(@Nullable String fontFeatureSettings) {
3168        if (fontFeatureSettings != mTextPaint.getFontFeatureSettings()) {
3169            mTextPaint.setFontFeatureSettings(fontFeatureSettings);
3170
3171            if (mLayout != null) {
3172                nullLayouts();
3173                requestLayout();
3174                invalidate();
3175            }
3176        }
3177    }
3178
3179
3180    /**
3181     * Sets the text color for all the states (normal, selected,
3182     * focused) to be this color.
3183     *
3184     * @see #setTextColor(ColorStateList)
3185     * @see #getTextColors()
3186     *
3187     * @attr ref android.R.styleable#TextView_textColor
3188     */
3189    @android.view.RemotableViewMethod
3190    public void setTextColor(@ColorInt int color) {
3191        mTextColor = ColorStateList.valueOf(color);
3192        updateTextColors();
3193    }
3194
3195    /**
3196     * Sets the text color.
3197     *
3198     * @see #setTextColor(int)
3199     * @see #getTextColors()
3200     * @see #setHintTextColor(ColorStateList)
3201     * @see #setLinkTextColor(ColorStateList)
3202     *
3203     * @attr ref android.R.styleable#TextView_textColor
3204     */
3205    public void setTextColor(ColorStateList colors) {
3206        if (colors == null) {
3207            throw new NullPointerException();
3208        }
3209
3210        mTextColor = colors;
3211        updateTextColors();
3212    }
3213
3214    /**
3215     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
3216     *
3217     * @see #setTextColor(ColorStateList)
3218     * @see #setTextColor(int)
3219     *
3220     * @attr ref android.R.styleable#TextView_textColor
3221     */
3222    public final ColorStateList getTextColors() {
3223        return mTextColor;
3224    }
3225
3226    /**
3227     * <p>Return the current color selected for normal text.</p>
3228     *
3229     * @return Returns the current text color.
3230     */
3231    @ColorInt
3232    public final int getCurrentTextColor() {
3233        return mCurTextColor;
3234    }
3235
3236    /**
3237     * Sets the color used to display the selection highlight.
3238     *
3239     * @attr ref android.R.styleable#TextView_textColorHighlight
3240     */
3241    @android.view.RemotableViewMethod
3242    public void setHighlightColor(@ColorInt int color) {
3243        if (mHighlightColor != color) {
3244            mHighlightColor = color;
3245            invalidate();
3246        }
3247    }
3248
3249    /**
3250     * @return the color used to display the selection highlight
3251     *
3252     * @see #setHighlightColor(int)
3253     *
3254     * @attr ref android.R.styleable#TextView_textColorHighlight
3255     */
3256    @ColorInt
3257    public int getHighlightColor() {
3258        return mHighlightColor;
3259    }
3260
3261    /**
3262     * Sets whether the soft input method will be made visible when this
3263     * TextView gets focused. The default is true.
3264     */
3265    @android.view.RemotableViewMethod
3266    public final void setShowSoftInputOnFocus(boolean show) {
3267        createEditorIfNeeded();
3268        mEditor.mShowSoftInputOnFocus = show;
3269    }
3270
3271    /**
3272     * Returns whether the soft input method will be made visible when this
3273     * TextView gets focused. The default is true.
3274     */
3275    public final boolean getShowSoftInputOnFocus() {
3276        // When there is no Editor, return default true value
3277        return mEditor == null || mEditor.mShowSoftInputOnFocus;
3278    }
3279
3280    /**
3281     * Gives the text a shadow of the specified blur radius and color, the specified
3282     * distance from its drawn position.
3283     * <p>
3284     * The text shadow produced does not interact with the properties on view
3285     * that are responsible for real time shadows,
3286     * {@link View#getElevation() elevation} and
3287     * {@link View#getTranslationZ() translationZ}.
3288     *
3289     * @see Paint#setShadowLayer(float, float, float, int)
3290     *
3291     * @attr ref android.R.styleable#TextView_shadowColor
3292     * @attr ref android.R.styleable#TextView_shadowDx
3293     * @attr ref android.R.styleable#TextView_shadowDy
3294     * @attr ref android.R.styleable#TextView_shadowRadius
3295     */
3296    public void setShadowLayer(float radius, float dx, float dy, int color) {
3297        mTextPaint.setShadowLayer(radius, dx, dy, color);
3298
3299        mShadowRadius = radius;
3300        mShadowDx = dx;
3301        mShadowDy = dy;
3302        mShadowColor = color;
3303
3304        // Will change text clip region
3305        if (mEditor != null) mEditor.invalidateTextDisplayList();
3306        invalidate();
3307    }
3308
3309    /**
3310     * Gets the radius of the shadow layer.
3311     *
3312     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
3313     *
3314     * @see #setShadowLayer(float, float, float, int)
3315     *
3316     * @attr ref android.R.styleable#TextView_shadowRadius
3317     */
3318    public float getShadowRadius() {
3319        return mShadowRadius;
3320    }
3321
3322    /**
3323     * @return the horizontal offset of the shadow layer
3324     *
3325     * @see #setShadowLayer(float, float, float, int)
3326     *
3327     * @attr ref android.R.styleable#TextView_shadowDx
3328     */
3329    public float getShadowDx() {
3330        return mShadowDx;
3331    }
3332
3333    /**
3334     * @return the vertical offset of the shadow layer
3335     *
3336     * @see #setShadowLayer(float, float, float, int)
3337     *
3338     * @attr ref android.R.styleable#TextView_shadowDy
3339     */
3340    public float getShadowDy() {
3341        return mShadowDy;
3342    }
3343
3344    /**
3345     * @return the color of the shadow layer
3346     *
3347     * @see #setShadowLayer(float, float, float, int)
3348     *
3349     * @attr ref android.R.styleable#TextView_shadowColor
3350     */
3351    @ColorInt
3352    public int getShadowColor() {
3353        return mShadowColor;
3354    }
3355
3356    /**
3357     * @return the base paint used for the text.  Please use this only to
3358     * consult the Paint's properties and not to change them.
3359     */
3360    public TextPaint getPaint() {
3361        return mTextPaint;
3362    }
3363
3364    /**
3365     * Sets the autolink mask of the text.  See {@link
3366     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
3367     * possible values.
3368     *
3369     * @attr ref android.R.styleable#TextView_autoLink
3370     */
3371    @android.view.RemotableViewMethod
3372    public final void setAutoLinkMask(int mask) {
3373        mAutoLinkMask = mask;
3374    }
3375
3376    /**
3377     * Sets whether the movement method will automatically be set to {@link LinkMovementMethod}
3378     * after {@link #setText} or {@link #append} is called. The movement method is set if one of the
3379     * following is true:
3380     * <ul>
3381     * <li>{@link #setAutoLinkMask} has been set to nonzero and links are detected in
3382     * {@link #setText} or {@link #append}.
3383     * <li>The input for {@link #setText} or {@link #append} contains a {@link ClickableSpan}.
3384     * </ul>
3385     *
3386     * <p>This function does not have an immediate effect, movement method will be set only after a
3387     * call to {@link #setText} or {@link #append}. The default is true.</p>
3388     *
3389     * @attr ref android.R.styleable#TextView_linksClickable
3390     */
3391    @android.view.RemotableViewMethod
3392    public final void setLinksClickable(boolean whether) {
3393        mLinksClickable = whether;
3394    }
3395
3396    /**
3397     * Returns whether the movement method will automatically be set to {@link LinkMovementMethod}
3398     * after {@link #setText} or {@link #append} is called.
3399     *
3400     * See {@link #setLinksClickable} for details.
3401     *
3402     * <p>The default is true.</p>
3403     *
3404     * @see #setLinksClickable
3405     *
3406     * @attr ref android.R.styleable#TextView_linksClickable
3407     */
3408    public final boolean getLinksClickable() {
3409        return mLinksClickable;
3410    }
3411
3412    /**
3413     * Returns the list of URLSpans attached to the text
3414     * (by {@link Linkify} or otherwise) if any.  You can call
3415     * {@link URLSpan#getURL} on them to find where they link to
3416     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
3417     * to find the region of the text they are attached to.
3418     */
3419    public URLSpan[] getUrls() {
3420        if (mText instanceof Spanned) {
3421            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
3422        } else {
3423            return new URLSpan[0];
3424        }
3425    }
3426
3427    /**
3428     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
3429     * TextView.
3430     *
3431     * @see #setHintTextColor(ColorStateList)
3432     * @see #getHintTextColors()
3433     * @see #setTextColor(int)
3434     *
3435     * @attr ref android.R.styleable#TextView_textColorHint
3436     */
3437    @android.view.RemotableViewMethod
3438    public final void setHintTextColor(@ColorInt int color) {
3439        mHintTextColor = ColorStateList.valueOf(color);
3440        updateTextColors();
3441    }
3442
3443    /**
3444     * Sets the color of the hint text.
3445     *
3446     * @see #getHintTextColors()
3447     * @see #setHintTextColor(int)
3448     * @see #setTextColor(ColorStateList)
3449     * @see #setLinkTextColor(ColorStateList)
3450     *
3451     * @attr ref android.R.styleable#TextView_textColorHint
3452     */
3453    public final void setHintTextColor(ColorStateList colors) {
3454        mHintTextColor = colors;
3455        updateTextColors();
3456    }
3457
3458    /**
3459     * @return the color of the hint text, for the different states of this TextView.
3460     *
3461     * @see #setHintTextColor(ColorStateList)
3462     * @see #setHintTextColor(int)
3463     * @see #setTextColor(ColorStateList)
3464     * @see #setLinkTextColor(ColorStateList)
3465     *
3466     * @attr ref android.R.styleable#TextView_textColorHint
3467     */
3468    public final ColorStateList getHintTextColors() {
3469        return mHintTextColor;
3470    }
3471
3472    /**
3473     * <p>Return the current color selected to paint the hint text.</p>
3474     *
3475     * @return Returns the current hint text color.
3476     */
3477    @ColorInt
3478    public final int getCurrentHintTextColor() {
3479        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
3480    }
3481
3482    /**
3483     * Sets the color of links in the text.
3484     *
3485     * @see #setLinkTextColor(ColorStateList)
3486     * @see #getLinkTextColors()
3487     *
3488     * @attr ref android.R.styleable#TextView_textColorLink
3489     */
3490    @android.view.RemotableViewMethod
3491    public final void setLinkTextColor(@ColorInt int color) {
3492        mLinkTextColor = ColorStateList.valueOf(color);
3493        updateTextColors();
3494    }
3495
3496    /**
3497     * Sets the color of links in the text.
3498     *
3499     * @see #setLinkTextColor(int)
3500     * @see #getLinkTextColors()
3501     * @see #setTextColor(ColorStateList)
3502     * @see #setHintTextColor(ColorStateList)
3503     *
3504     * @attr ref android.R.styleable#TextView_textColorLink
3505     */
3506    public final void setLinkTextColor(ColorStateList colors) {
3507        mLinkTextColor = colors;
3508        updateTextColors();
3509    }
3510
3511    /**
3512     * @return the list of colors used to paint the links in the text, for the different states of
3513     * this TextView
3514     *
3515     * @see #setLinkTextColor(ColorStateList)
3516     * @see #setLinkTextColor(int)
3517     *
3518     * @attr ref android.R.styleable#TextView_textColorLink
3519     */
3520    public final ColorStateList getLinkTextColors() {
3521        return mLinkTextColor;
3522    }
3523
3524    /**
3525     * Sets the horizontal alignment of the text and the
3526     * vertical gravity that will be used when there is extra space
3527     * in the TextView beyond what is required for the text itself.
3528     *
3529     * @see android.view.Gravity
3530     * @attr ref android.R.styleable#TextView_gravity
3531     */
3532    public void setGravity(int gravity) {
3533        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
3534            gravity |= Gravity.START;
3535        }
3536        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
3537            gravity |= Gravity.TOP;
3538        }
3539
3540        boolean newLayout = false;
3541
3542        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
3543            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
3544            newLayout = true;
3545        }
3546
3547        if (gravity != mGravity) {
3548            invalidate();
3549        }
3550
3551        mGravity = gravity;
3552
3553        if (mLayout != null && newLayout) {
3554            // XXX this is heavy-handed because no actual content changes.
3555            int want = mLayout.getWidth();
3556            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
3557
3558            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
3559                          mRight - mLeft - getCompoundPaddingLeft() -
3560                          getCompoundPaddingRight(), true);
3561        }
3562    }
3563
3564    /**
3565     * Returns the horizontal and vertical alignment of this TextView.
3566     *
3567     * @see android.view.Gravity
3568     * @attr ref android.R.styleable#TextView_gravity
3569     */
3570    public int getGravity() {
3571        return mGravity;
3572    }
3573
3574    /**
3575     * @return the flags on the Paint being used to display the text.
3576     * @see Paint#getFlags
3577     */
3578    public int getPaintFlags() {
3579        return mTextPaint.getFlags();
3580    }
3581
3582    /**
3583     * Sets flags on the Paint being used to display the text and
3584     * reflows the text if they are different from the old flags.
3585     * @see Paint#setFlags
3586     */
3587    @android.view.RemotableViewMethod
3588    public void setPaintFlags(int flags) {
3589        if (mTextPaint.getFlags() != flags) {
3590            mTextPaint.setFlags(flags);
3591
3592            if (mLayout != null) {
3593                nullLayouts();
3594                requestLayout();
3595                invalidate();
3596            }
3597        }
3598    }
3599
3600    /**
3601     * Sets whether the text should be allowed to be wider than the
3602     * View is.  If false, it will be wrapped to the width of the View.
3603     *
3604     * @attr ref android.R.styleable#TextView_scrollHorizontally
3605     */
3606    public void setHorizontallyScrolling(boolean whether) {
3607        if (mHorizontallyScrolling != whether) {
3608            mHorizontallyScrolling = whether;
3609
3610            if (mLayout != null) {
3611                nullLayouts();
3612                requestLayout();
3613                invalidate();
3614            }
3615        }
3616    }
3617
3618    /**
3619     * Returns whether the text is allowed to be wider than the View is.
3620     * If false, the text will be wrapped to the width of the View.
3621     *
3622     * @attr ref android.R.styleable#TextView_scrollHorizontally
3623     * @hide
3624     */
3625    public boolean getHorizontallyScrolling() {
3626        return mHorizontallyScrolling;
3627    }
3628
3629    /**
3630     * Makes the TextView at least this many lines tall.
3631     *
3632     * Setting this value overrides any other (minimum) height setting. A single line TextView will
3633     * set this value to 1.
3634     *
3635     * @see #getMinLines()
3636     *
3637     * @attr ref android.R.styleable#TextView_minLines
3638     */
3639    @android.view.RemotableViewMethod
3640    public void setMinLines(int minlines) {
3641        mMinimum = minlines;
3642        mMinMode = LINES;
3643
3644        requestLayout();
3645        invalidate();
3646    }
3647
3648    /**
3649     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
3650     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
3651     *
3652     * @see #setMinLines(int)
3653     *
3654     * @attr ref android.R.styleable#TextView_minLines
3655     */
3656    public int getMinLines() {
3657        return mMinMode == LINES ? mMinimum : -1;
3658    }
3659
3660    /**
3661     * Makes the TextView at least this many pixels tall.
3662     *
3663     * Setting this value overrides any other (minimum) number of lines setting.
3664     *
3665     * @attr ref android.R.styleable#TextView_minHeight
3666     */
3667    @android.view.RemotableViewMethod
3668    public void setMinHeight(int minHeight) {
3669        mMinimum = minHeight;
3670        mMinMode = PIXELS;
3671
3672        requestLayout();
3673        invalidate();
3674    }
3675
3676    /**
3677     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
3678     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
3679     *
3680     * @see #setMinHeight(int)
3681     *
3682     * @attr ref android.R.styleable#TextView_minHeight
3683     */
3684    public int getMinHeight() {
3685        return mMinMode == PIXELS ? mMinimum : -1;
3686    }
3687
3688    /**
3689     * Makes the TextView at most this many lines tall.
3690     *
3691     * Setting this value overrides any other (maximum) height setting.
3692     *
3693     * @attr ref android.R.styleable#TextView_maxLines
3694     */
3695    @android.view.RemotableViewMethod
3696    public void setMaxLines(int maxlines) {
3697        mMaximum = maxlines;
3698        mMaxMode = LINES;
3699
3700        requestLayout();
3701        invalidate();
3702    }
3703
3704    /**
3705     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
3706     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
3707     *
3708     * @see #setMaxLines(int)
3709     *
3710     * @attr ref android.R.styleable#TextView_maxLines
3711     */
3712    public int getMaxLines() {
3713        return mMaxMode == LINES ? mMaximum : -1;
3714    }
3715
3716    /**
3717     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
3718     * {@link #setMaxLines(int)} method.
3719     *
3720     * Setting this value overrides any other (maximum) number of lines setting.
3721     *
3722     * @attr ref android.R.styleable#TextView_maxHeight
3723     */
3724    @android.view.RemotableViewMethod
3725    public void setMaxHeight(int maxHeight) {
3726        mMaximum = maxHeight;
3727        mMaxMode = PIXELS;
3728
3729        requestLayout();
3730        invalidate();
3731    }
3732
3733    /**
3734     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
3735     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
3736     *
3737     * @see #setMaxHeight(int)
3738     *
3739     * @attr ref android.R.styleable#TextView_maxHeight
3740     */
3741    public int getMaxHeight() {
3742        return mMaxMode == PIXELS ? mMaximum : -1;
3743    }
3744
3745    /**
3746     * Makes the TextView exactly this many lines tall.
3747     *
3748     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3749     * height setting. A single line TextView will set this value to 1.
3750     *
3751     * @attr ref android.R.styleable#TextView_lines
3752     */
3753    @android.view.RemotableViewMethod
3754    public void setLines(int lines) {
3755        mMaximum = mMinimum = lines;
3756        mMaxMode = mMinMode = LINES;
3757
3758        requestLayout();
3759        invalidate();
3760    }
3761
3762    /**
3763     * Makes the TextView exactly this many pixels tall.
3764     * You could do the same thing by specifying this number in the
3765     * LayoutParams.
3766     *
3767     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3768     * height setting.
3769     *
3770     * @attr ref android.R.styleable#TextView_height
3771     */
3772    @android.view.RemotableViewMethod
3773    public void setHeight(int pixels) {
3774        mMaximum = mMinimum = pixels;
3775        mMaxMode = mMinMode = PIXELS;
3776
3777        requestLayout();
3778        invalidate();
3779    }
3780
3781    /**
3782     * Makes the TextView at least this many ems wide
3783     *
3784     * @attr ref android.R.styleable#TextView_minEms
3785     */
3786    @android.view.RemotableViewMethod
3787    public void setMinEms(int minems) {
3788        mMinWidth = minems;
3789        mMinWidthMode = EMS;
3790
3791        requestLayout();
3792        invalidate();
3793    }
3794
3795    /**
3796     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
3797     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
3798     *
3799     * @see #setMinEms(int)
3800     * @see #setEms(int)
3801     *
3802     * @attr ref android.R.styleable#TextView_minEms
3803     */
3804    public int getMinEms() {
3805        return mMinWidthMode == EMS ? mMinWidth : -1;
3806    }
3807
3808    /**
3809     * Makes the TextView at least this many pixels wide
3810     *
3811     * @attr ref android.R.styleable#TextView_minWidth
3812     */
3813    @android.view.RemotableViewMethod
3814    public void setMinWidth(int minpixels) {
3815        mMinWidth = minpixels;
3816        mMinWidthMode = PIXELS;
3817
3818        requestLayout();
3819        invalidate();
3820    }
3821
3822    /**
3823     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
3824     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
3825     *
3826     * @see #setMinWidth(int)
3827     * @see #setWidth(int)
3828     *
3829     * @attr ref android.R.styleable#TextView_minWidth
3830     */
3831    public int getMinWidth() {
3832        return mMinWidthMode == PIXELS ? mMinWidth : -1;
3833    }
3834
3835    /**
3836     * Makes the TextView at most this many ems wide
3837     *
3838     * @attr ref android.R.styleable#TextView_maxEms
3839     */
3840    @android.view.RemotableViewMethod
3841    public void setMaxEms(int maxems) {
3842        mMaxWidth = maxems;
3843        mMaxWidthMode = EMS;
3844
3845        requestLayout();
3846        invalidate();
3847    }
3848
3849    /**
3850     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3851     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3852     *
3853     * @see #setMaxEms(int)
3854     * @see #setEms(int)
3855     *
3856     * @attr ref android.R.styleable#TextView_maxEms
3857     */
3858    public int getMaxEms() {
3859        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3860    }
3861
3862    /**
3863     * Makes the TextView at most this many pixels wide
3864     *
3865     * @attr ref android.R.styleable#TextView_maxWidth
3866     */
3867    @android.view.RemotableViewMethod
3868    public void setMaxWidth(int maxpixels) {
3869        mMaxWidth = maxpixels;
3870        mMaxWidthMode = PIXELS;
3871
3872        requestLayout();
3873        invalidate();
3874    }
3875
3876    /**
3877     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3878     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3879     *
3880     * @see #setMaxWidth(int)
3881     * @see #setWidth(int)
3882     *
3883     * @attr ref android.R.styleable#TextView_maxWidth
3884     */
3885    public int getMaxWidth() {
3886        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3887    }
3888
3889    /**
3890     * Makes the TextView exactly this many ems wide
3891     *
3892     * @see #setMaxEms(int)
3893     * @see #setMinEms(int)
3894     * @see #getMinEms()
3895     * @see #getMaxEms()
3896     *
3897     * @attr ref android.R.styleable#TextView_ems
3898     */
3899    @android.view.RemotableViewMethod
3900    public void setEms(int ems) {
3901        mMaxWidth = mMinWidth = ems;
3902        mMaxWidthMode = mMinWidthMode = EMS;
3903
3904        requestLayout();
3905        invalidate();
3906    }
3907
3908    /**
3909     * Makes the TextView exactly this many pixels wide.
3910     * You could do the same thing by specifying this number in the
3911     * LayoutParams.
3912     *
3913     * @see #setMaxWidth(int)
3914     * @see #setMinWidth(int)
3915     * @see #getMinWidth()
3916     * @see #getMaxWidth()
3917     *
3918     * @attr ref android.R.styleable#TextView_width
3919     */
3920    @android.view.RemotableViewMethod
3921    public void setWidth(int pixels) {
3922        mMaxWidth = mMinWidth = pixels;
3923        mMaxWidthMode = mMinWidthMode = PIXELS;
3924
3925        requestLayout();
3926        invalidate();
3927    }
3928
3929    /**
3930     * Sets line spacing for this TextView.  Each line will have its height
3931     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3932     *
3933     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3934     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3935     */
3936    public void setLineSpacing(float add, float mult) {
3937        if (mSpacingAdd != add || mSpacingMult != mult) {
3938            mSpacingAdd = add;
3939            mSpacingMult = mult;
3940
3941            if (mLayout != null) {
3942                nullLayouts();
3943                requestLayout();
3944                invalidate();
3945            }
3946        }
3947    }
3948
3949    /**
3950     * Gets the line spacing multiplier
3951     *
3952     * @return the value by which each line's height is multiplied to get its actual height.
3953     *
3954     * @see #setLineSpacing(float, float)
3955     * @see #getLineSpacingExtra()
3956     *
3957     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3958     */
3959    public float getLineSpacingMultiplier() {
3960        return mSpacingMult;
3961    }
3962
3963    /**
3964     * Gets the line spacing extra space
3965     *
3966     * @return the extra space that is added to the height of each lines of this TextView.
3967     *
3968     * @see #setLineSpacing(float, float)
3969     * @see #getLineSpacingMultiplier()
3970     *
3971     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3972     */
3973    public float getLineSpacingExtra() {
3974        return mSpacingAdd;
3975    }
3976
3977    /**
3978     * Convenience method: Append the specified text to the TextView's
3979     * display buffer, upgrading it to BufferType.EDITABLE if it was
3980     * not already editable.
3981     */
3982    public final void append(CharSequence text) {
3983        append(text, 0, text.length());
3984    }
3985
3986    /**
3987     * Convenience method: Append the specified text slice to the TextView's
3988     * display buffer, upgrading it to BufferType.EDITABLE if it was
3989     * not already editable.
3990     */
3991    public void append(CharSequence text, int start, int end) {
3992        if (!(mText instanceof Editable)) {
3993            setText(mText, BufferType.EDITABLE);
3994        }
3995
3996        ((Editable) mText).append(text, start, end);
3997
3998        boolean hasClickableSpans = false;
3999        if (mAutoLinkMask != 0) {
4000            hasClickableSpans = Linkify.addLinks((Spannable) mText, mAutoLinkMask);
4001        } else if (mLinksClickable && text instanceof Spanned) {
4002            ClickableSpan[] clickableSpans =
4003                    ((Spanned) text).getSpans(0, text.length(), ClickableSpan.class);
4004            hasClickableSpans = clickableSpans != null && clickableSpans.length > 0;
4005        }
4006
4007        // Do not change the movement method for text that supports text selection as it
4008        // would prevent an arbitrary cursor displacement.
4009        if (hasClickableSpans && mLinksClickable && !textCanBeSelected()) {
4010            setMovementMethod(LinkMovementMethod.getInstance());
4011        }
4012    }
4013
4014    private void updateTextColors() {
4015        boolean inval = false;
4016        int color = mTextColor.getColorForState(getDrawableState(), 0);
4017        if (color != mCurTextColor) {
4018            mCurTextColor = color;
4019            inval = true;
4020        }
4021        if (mLinkTextColor != null) {
4022            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
4023            if (color != mTextPaint.linkColor) {
4024                mTextPaint.linkColor = color;
4025                inval = true;
4026            }
4027        }
4028        if (mHintTextColor != null) {
4029            color = mHintTextColor.getColorForState(getDrawableState(), 0);
4030            if (color != mCurHintTextColor) {
4031                mCurHintTextColor = color;
4032                if (mText.length() == 0) {
4033                    inval = true;
4034                }
4035            }
4036        }
4037        if (inval) {
4038            // Text needs to be redrawn with the new color
4039            if (mEditor != null) mEditor.invalidateTextDisplayList();
4040            invalidate();
4041        }
4042    }
4043
4044    @Override
4045    protected void drawableStateChanged() {
4046        super.drawableStateChanged();
4047
4048        if (mTextColor != null && mTextColor.isStateful()
4049                || (mHintTextColor != null && mHintTextColor.isStateful())
4050                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
4051            updateTextColors();
4052        }
4053
4054        if (mDrawables != null) {
4055            final int[] state = getDrawableState();
4056            for (Drawable dr : mDrawables.mShowing) {
4057                if (dr != null && dr.isStateful() && dr.setState(state)) {
4058                    invalidateDrawable(dr);
4059                }
4060            }
4061        }
4062    }
4063
4064    @Override
4065    public void drawableHotspotChanged(float x, float y) {
4066        super.drawableHotspotChanged(x, y);
4067
4068        if (mDrawables != null) {
4069            for (Drawable dr : mDrawables.mShowing) {
4070                if (dr != null) {
4071                    dr.setHotspot(x, y);
4072                }
4073            }
4074        }
4075    }
4076
4077    @Override
4078    public Parcelable onSaveInstanceState() {
4079        Parcelable superState = super.onSaveInstanceState();
4080
4081        // Save state if we are forced to
4082        boolean save = mFreezesText;
4083        int start = 0;
4084        int end = 0;
4085
4086        if (mText != null) {
4087            start = getSelectionStart();
4088            end = getSelectionEnd();
4089            if (start >= 0 || end >= 0) {
4090                // Or save state if there is a selection
4091                save = true;
4092            }
4093        }
4094
4095        if (save) {
4096            SavedState ss = new SavedState(superState);
4097            // XXX Should also save the current scroll position!
4098            ss.selStart = start;
4099            ss.selEnd = end;
4100
4101            if (mText instanceof Spanned) {
4102                Spannable sp = new SpannableStringBuilder(mText);
4103
4104                if (mEditor != null) {
4105                    removeMisspelledSpans(sp);
4106                    sp.removeSpan(mEditor.mSuggestionRangeSpan);
4107                }
4108
4109                ss.text = sp;
4110            } else {
4111                ss.text = mText.toString();
4112            }
4113
4114            if (isFocused() && start >= 0 && end >= 0) {
4115                ss.frozenWithFocus = true;
4116            }
4117
4118            ss.error = getError();
4119
4120            if (mEditor != null) {
4121                ss.editorState = mEditor.saveInstanceState();
4122            }
4123            return ss;
4124        }
4125
4126        return superState;
4127    }
4128
4129    void removeMisspelledSpans(Spannable spannable) {
4130        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
4131                SuggestionSpan.class);
4132        for (int i = 0; i < suggestionSpans.length; i++) {
4133            int flags = suggestionSpans[i].getFlags();
4134            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
4135                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
4136                spannable.removeSpan(suggestionSpans[i]);
4137            }
4138        }
4139    }
4140
4141    @Override
4142    public void onRestoreInstanceState(Parcelable state) {
4143        if (!(state instanceof SavedState)) {
4144            super.onRestoreInstanceState(state);
4145            return;
4146        }
4147
4148        SavedState ss = (SavedState)state;
4149        super.onRestoreInstanceState(ss.getSuperState());
4150
4151        // XXX restore buffer type too, as well as lots of other stuff
4152        if (ss.text != null) {
4153            setText(ss.text);
4154        }
4155
4156        if (ss.selStart >= 0 && ss.selEnd >= 0) {
4157            if (mText instanceof Spannable) {
4158                int len = mText.length();
4159
4160                if (ss.selStart > len || ss.selEnd > len) {
4161                    String restored = "";
4162
4163                    if (ss.text != null) {
4164                        restored = "(restored) ";
4165                    }
4166
4167                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
4168                          "/" + ss.selEnd + " out of range for " + restored +
4169                          "text " + mText);
4170                } else {
4171                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
4172
4173                    if (ss.frozenWithFocus) {
4174                        createEditorIfNeeded();
4175                        mEditor.mFrozenWithFocus = true;
4176                    }
4177                }
4178            }
4179        }
4180
4181        if (ss.error != null) {
4182            final CharSequence error = ss.error;
4183            // Display the error later, after the first layout pass
4184            post(new Runnable() {
4185                public void run() {
4186                    if (mEditor == null || !mEditor.mErrorWasChanged) {
4187                        setError(error);
4188                    }
4189                }
4190            });
4191        }
4192
4193        if (ss.editorState != null) {
4194            createEditorIfNeeded();
4195            mEditor.restoreInstanceState(ss.editorState);
4196        }
4197    }
4198
4199    /**
4200     * Control whether this text view saves its entire text contents when
4201     * freezing to an icicle, in addition to dynamic state such as cursor
4202     * position.  By default this is false, not saving the text.  Set to true
4203     * if the text in the text view is not being saved somewhere else in
4204     * persistent storage (such as in a content provider) so that if the
4205     * view is later thawed the user will not lose their data.
4206     *
4207     * @param freezesText Controls whether a frozen icicle should include the
4208     * entire text data: true to include it, false to not.
4209     *
4210     * @attr ref android.R.styleable#TextView_freezesText
4211     */
4212    @android.view.RemotableViewMethod
4213    public void setFreezesText(boolean freezesText) {
4214        mFreezesText = freezesText;
4215    }
4216
4217    /**
4218     * Return whether this text view is including its entire text contents
4219     * in frozen icicles.
4220     *
4221     * @return Returns true if text is included, false if it isn't.
4222     *
4223     * @see #setFreezesText
4224     */
4225    public boolean getFreezesText() {
4226        return mFreezesText;
4227    }
4228
4229    ///////////////////////////////////////////////////////////////////////////
4230
4231    /**
4232     * Sets the Factory used to create new Editables.
4233     */
4234    public final void setEditableFactory(Editable.Factory factory) {
4235        mEditableFactory = factory;
4236        setText(mText);
4237    }
4238
4239    /**
4240     * Sets the Factory used to create new Spannables.
4241     */
4242    public final void setSpannableFactory(Spannable.Factory factory) {
4243        mSpannableFactory = factory;
4244        setText(mText);
4245    }
4246
4247    /**
4248     * Sets the string value of the TextView. TextView <em>does not</em> accept
4249     * HTML-like formatting, which you can do with text strings in XML resource files.
4250     * To style your strings, attach android.text.style.* objects to a
4251     * {@link android.text.SpannableString SpannableString}, or see the
4252     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
4253     * Available Resource Types</a> documentation for an example of setting
4254     * formatted text in the XML resource file.
4255     *
4256     * @attr ref android.R.styleable#TextView_text
4257     */
4258    @android.view.RemotableViewMethod
4259    public final void setText(CharSequence text) {
4260        setText(text, mBufferType);
4261    }
4262
4263    /**
4264     * Like {@link #setText(CharSequence)},
4265     * except that the cursor position (if any) is retained in the new text.
4266     *
4267     * @param text The new text to place in the text view.
4268     *
4269     * @see #setText(CharSequence)
4270     */
4271    @android.view.RemotableViewMethod
4272    public final void setTextKeepState(CharSequence text) {
4273        setTextKeepState(text, mBufferType);
4274    }
4275
4276    /**
4277     * Sets the text that this TextView is to display (see
4278     * {@link #setText(CharSequence)}) and also sets whether it is stored
4279     * in a styleable/spannable buffer and whether it is editable.
4280     *
4281     * @attr ref android.R.styleable#TextView_text
4282     * @attr ref android.R.styleable#TextView_bufferType
4283     */
4284    public void setText(CharSequence text, BufferType type) {
4285        setText(text, type, true, 0);
4286
4287        if (mCharWrapper != null) {
4288            mCharWrapper.mChars = null;
4289        }
4290    }
4291
4292    private void setText(CharSequence text, BufferType type,
4293                         boolean notifyBefore, int oldlen) {
4294        if (text == null) {
4295            text = "";
4296        }
4297
4298        // If suggestions are not enabled, remove the suggestion spans from the text
4299        if (!isSuggestionsEnabled()) {
4300            text = removeSuggestionSpans(text);
4301        }
4302
4303        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
4304
4305        if (text instanceof Spanned &&
4306            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
4307            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
4308                setHorizontalFadingEdgeEnabled(true);
4309                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
4310            } else {
4311                setHorizontalFadingEdgeEnabled(false);
4312                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
4313            }
4314            setEllipsize(TextUtils.TruncateAt.MARQUEE);
4315        }
4316
4317        int n = mFilters.length;
4318        for (int i = 0; i < n; i++) {
4319            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
4320            if (out != null) {
4321                text = out;
4322            }
4323        }
4324
4325        if (notifyBefore) {
4326            if (mText != null) {
4327                oldlen = mText.length();
4328                sendBeforeTextChanged(mText, 0, oldlen, text.length());
4329            } else {
4330                sendBeforeTextChanged("", 0, 0, text.length());
4331            }
4332        }
4333
4334        boolean needEditableForNotification = false;
4335
4336        if (mListeners != null && mListeners.size() != 0) {
4337            needEditableForNotification = true;
4338        }
4339
4340        if (type == BufferType.EDITABLE || getKeyListener() != null ||
4341                needEditableForNotification) {
4342            createEditorIfNeeded();
4343            mEditor.forgetUndoRedo();
4344            Editable t = mEditableFactory.newEditable(text);
4345            text = t;
4346            setFilters(t, mFilters);
4347            InputMethodManager imm = InputMethodManager.peekInstance();
4348            if (imm != null) imm.restartInput(this);
4349        } else if (type == BufferType.SPANNABLE || mMovement != null) {
4350            text = mSpannableFactory.newSpannable(text);
4351        } else if (!(text instanceof CharWrapper)) {
4352            text = TextUtils.stringOrSpannedString(text);
4353        }
4354
4355        boolean hasClickableSpans = false;
4356        if (mAutoLinkMask != 0) {
4357            Spannable s2;
4358
4359            if (type == BufferType.EDITABLE || text instanceof Spannable) {
4360                s2 = (Spannable) text;
4361            } else {
4362                s2 = mSpannableFactory.newSpannable(text);
4363            }
4364
4365            hasClickableSpans = Linkify.addLinks(s2, mAutoLinkMask);
4366            if (hasClickableSpans) {
4367                text = s2;
4368            }
4369        } else if (mLinksClickable && text instanceof Spanned) {
4370            ClickableSpan[] clickableSpans =
4371                    ((Spanned) text).getSpans(0, text.length(), ClickableSpan.class);
4372            hasClickableSpans = clickableSpans != null && clickableSpans.length > 0;
4373            if (hasClickableSpans && !(text instanceof Spannable)) {
4374                text = mSpannableFactory.newSpannable(text);
4375            }
4376        }
4377
4378        if (hasClickableSpans) {
4379            type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
4380            /*
4381             * We must go ahead and set the text before changing the
4382             * movement method, because setMovementMethod() may call
4383             * setText() again to try to upgrade the buffer type.
4384             */
4385            mText = text;
4386
4387            // Do not change the movement method for text that supports text selection as it
4388            // would prevent an arbitrary cursor displacement.
4389            if (mLinksClickable && !textCanBeSelected()) {
4390                setMovementMethod(LinkMovementMethod.getInstance());
4391            }
4392        }
4393
4394        mBufferType = type;
4395        mText = text;
4396
4397        if (mTransformation == null) {
4398            mTransformed = text;
4399        } else {
4400            mTransformed = mTransformation.getTransformation(text, this);
4401        }
4402
4403        final int textLength = text.length();
4404
4405        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
4406            Spannable sp = (Spannable) text;
4407
4408            // Remove any ChangeWatchers that might have come from other TextViews.
4409            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
4410            final int count = watchers.length;
4411            for (int i = 0; i < count; i++) {
4412                sp.removeSpan(watchers[i]);
4413            }
4414
4415            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
4416
4417            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
4418                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
4419
4420            if (mEditor != null) mEditor.addSpanWatchers(sp);
4421
4422            if (mTransformation != null) {
4423                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
4424            }
4425
4426            if (mMovement != null) {
4427                mMovement.initialize(this, (Spannable) text);
4428
4429                /*
4430                 * Initializing the movement method will have set the
4431                 * selection, so reset mSelectionMoved to keep that from
4432                 * interfering with the normal on-focus selection-setting.
4433                 */
4434                if (mEditor != null) mEditor.mSelectionMoved = false;
4435            }
4436        }
4437
4438        if (mLayout != null) {
4439            checkForRelayout();
4440        }
4441
4442        sendOnTextChanged(text, 0, oldlen, textLength);
4443        onTextChanged(text, 0, oldlen, textLength);
4444
4445        notifyViewAccessibilityStateChangedIfNeeded(AccessibilityEvent.CONTENT_CHANGE_TYPE_TEXT);
4446
4447        if (needEditableForNotification) {
4448            sendAfterTextChanged((Editable) text);
4449        }
4450
4451        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
4452        if (mEditor != null) mEditor.prepareCursorControllers();
4453    }
4454
4455    /**
4456     * Sets the TextView to display the specified slice of the specified
4457     * char array.  You must promise that you will not change the contents
4458     * of the array except for right before another call to setText(),
4459     * since the TextView has no way to know that the text
4460     * has changed and that it needs to invalidate and re-layout.
4461     */
4462    public final void setText(char[] text, int start, int len) {
4463        int oldlen = 0;
4464
4465        if (start < 0 || len < 0 || start + len > text.length) {
4466            throw new IndexOutOfBoundsException(start + ", " + len);
4467        }
4468
4469        /*
4470         * We must do the before-notification here ourselves because if
4471         * the old text is a CharWrapper we destroy it before calling
4472         * into the normal path.
4473         */
4474        if (mText != null) {
4475            oldlen = mText.length();
4476            sendBeforeTextChanged(mText, 0, oldlen, len);
4477        } else {
4478            sendBeforeTextChanged("", 0, 0, len);
4479        }
4480
4481        if (mCharWrapper == null) {
4482            mCharWrapper = new CharWrapper(text, start, len);
4483        } else {
4484            mCharWrapper.set(text, start, len);
4485        }
4486
4487        setText(mCharWrapper, mBufferType, false, oldlen);
4488    }
4489
4490    /**
4491     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
4492     * except that the cursor position (if any) is retained in the new text.
4493     *
4494     * @see #setText(CharSequence, android.widget.TextView.BufferType)
4495     */
4496    public final void setTextKeepState(CharSequence text, BufferType type) {
4497        int start = getSelectionStart();
4498        int end = getSelectionEnd();
4499        int len = text.length();
4500
4501        setText(text, type);
4502
4503        if (start >= 0 || end >= 0) {
4504            if (mText instanceof Spannable) {
4505                Selection.setSelection((Spannable) mText,
4506                                       Math.max(0, Math.min(start, len)),
4507                                       Math.max(0, Math.min(end, len)));
4508            }
4509        }
4510    }
4511
4512    @android.view.RemotableViewMethod
4513    public final void setText(@StringRes int resid) {
4514        setText(getContext().getResources().getText(resid));
4515    }
4516
4517    public final void setText(@StringRes int resid, BufferType type) {
4518        setText(getContext().getResources().getText(resid), type);
4519    }
4520
4521    /**
4522     * Sets the text to be displayed when the text of the TextView is empty.
4523     * Null means to use the normal empty text. The hint does not currently
4524     * participate in determining the size of the view.
4525     *
4526     * @attr ref android.R.styleable#TextView_hint
4527     */
4528    @android.view.RemotableViewMethod
4529    public final void setHint(CharSequence hint) {
4530        mHint = TextUtils.stringOrSpannedString(hint);
4531
4532        if (mLayout != null) {
4533            checkForRelayout();
4534        }
4535
4536        if (mText.length() == 0) {
4537            invalidate();
4538        }
4539
4540        // Invalidate display list if hint is currently used
4541        if (mEditor != null && mText.length() == 0 && mHint != null) {
4542            mEditor.invalidateTextDisplayList();
4543        }
4544    }
4545
4546    /**
4547     * Sets the text to be displayed when the text of the TextView is empty,
4548     * from a resource.
4549     *
4550     * @attr ref android.R.styleable#TextView_hint
4551     */
4552    @android.view.RemotableViewMethod
4553    public final void setHint(@StringRes int resid) {
4554        setHint(getContext().getResources().getText(resid));
4555    }
4556
4557    /**
4558     * Returns the hint that is displayed when the text of the TextView
4559     * is empty.
4560     *
4561     * @attr ref android.R.styleable#TextView_hint
4562     */
4563    @ViewDebug.CapturedViewProperty
4564    public CharSequence getHint() {
4565        return mHint;
4566    }
4567
4568    boolean isSingleLine() {
4569        return mSingleLine;
4570    }
4571
4572    private static boolean isMultilineInputType(int type) {
4573        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
4574            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
4575    }
4576
4577    /**
4578     * Removes the suggestion spans.
4579     */
4580    CharSequence removeSuggestionSpans(CharSequence text) {
4581       if (text instanceof Spanned) {
4582           Spannable spannable;
4583           if (text instanceof Spannable) {
4584               spannable = (Spannable) text;
4585           } else {
4586               spannable = new SpannableString(text);
4587               text = spannable;
4588           }
4589
4590           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
4591           for (int i = 0; i < spans.length; i++) {
4592               spannable.removeSpan(spans[i]);
4593           }
4594       }
4595       return text;
4596    }
4597
4598    /**
4599     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
4600     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
4601     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
4602     * then a soft keyboard will not be displayed for this text view.
4603     *
4604     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
4605     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
4606     * type.
4607     *
4608     * @see #getInputType()
4609     * @see #setRawInputType(int)
4610     * @see android.text.InputType
4611     * @attr ref android.R.styleable#TextView_inputType
4612     */
4613    public void setInputType(int type) {
4614        final boolean wasPassword = isPasswordInputType(getInputType());
4615        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
4616        setInputType(type, false);
4617        final boolean isPassword = isPasswordInputType(type);
4618        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
4619        boolean forceUpdate = false;
4620        if (isPassword) {
4621            setTransformationMethod(PasswordTransformationMethod.getInstance());
4622            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4623        } else if (isVisiblePassword) {
4624            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4625                forceUpdate = true;
4626            }
4627            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4628        } else if (wasPassword || wasVisiblePassword) {
4629            // not in password mode, clean up typeface and transformation
4630            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
4631            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4632                forceUpdate = true;
4633            }
4634        }
4635
4636        boolean singleLine = !isMultilineInputType(type);
4637
4638        // We need to update the single line mode if it has changed or we
4639        // were previously in password mode.
4640        if (mSingleLine != singleLine || forceUpdate) {
4641            // Change single line mode, but only change the transformation if
4642            // we are not in password mode.
4643            applySingleLine(singleLine, !isPassword, true);
4644        }
4645
4646        if (!isSuggestionsEnabled()) {
4647            mText = removeSuggestionSpans(mText);
4648        }
4649
4650        InputMethodManager imm = InputMethodManager.peekInstance();
4651        if (imm != null) imm.restartInput(this);
4652    }
4653
4654    /**
4655     * It would be better to rely on the input type for everything. A password inputType should have
4656     * a password transformation. We should hence use isPasswordInputType instead of this method.
4657     *
4658     * We should:
4659     * - Call setInputType in setKeyListener instead of changing the input type directly (which
4660     * would install the correct transformation).
4661     * - Refuse the installation of a non-password transformation in setTransformation if the input
4662     * type is password.
4663     *
4664     * However, this is like this for legacy reasons and we cannot break existing apps. This method
4665     * is useful since it matches what the user can see (obfuscated text or not).
4666     *
4667     * @return true if the current transformation method is of the password type.
4668     */
4669    boolean hasPasswordTransformationMethod() {
4670        return mTransformation instanceof PasswordTransformationMethod;
4671    }
4672
4673    private static boolean isPasswordInputType(int inputType) {
4674        final int variation =
4675                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4676        return variation
4677                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
4678                || variation
4679                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
4680                || variation
4681                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
4682    }
4683
4684    private static boolean isVisiblePasswordInputType(int inputType) {
4685        final int variation =
4686                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4687        return variation
4688                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
4689    }
4690
4691    /**
4692     * Directly change the content type integer of the text view, without
4693     * modifying any other state.
4694     * @see #setInputType(int)
4695     * @see android.text.InputType
4696     * @attr ref android.R.styleable#TextView_inputType
4697     */
4698    public void setRawInputType(int type) {
4699        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
4700        createEditorIfNeeded();
4701        mEditor.mInputType = type;
4702    }
4703
4704    private void setInputType(int type, boolean direct) {
4705        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
4706        KeyListener input;
4707        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
4708            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
4709            TextKeyListener.Capitalize cap;
4710            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
4711                cap = TextKeyListener.Capitalize.CHARACTERS;
4712            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
4713                cap = TextKeyListener.Capitalize.WORDS;
4714            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
4715                cap = TextKeyListener.Capitalize.SENTENCES;
4716            } else {
4717                cap = TextKeyListener.Capitalize.NONE;
4718            }
4719            input = TextKeyListener.getInstance(autotext, cap);
4720        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
4721            input = DigitsKeyListener.getInstance(
4722                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
4723                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
4724        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
4725            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
4726                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
4727                    input = DateKeyListener.getInstance();
4728                    break;
4729                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
4730                    input = TimeKeyListener.getInstance();
4731                    break;
4732                default:
4733                    input = DateTimeKeyListener.getInstance();
4734                    break;
4735            }
4736        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
4737            input = DialerKeyListener.getInstance();
4738        } else {
4739            input = TextKeyListener.getInstance();
4740        }
4741        setRawInputType(type);
4742        if (direct) {
4743            createEditorIfNeeded();
4744            mEditor.mKeyListener = input;
4745        } else {
4746            setKeyListenerOnly(input);
4747        }
4748    }
4749
4750    /**
4751     * Get the type of the editable content.
4752     *
4753     * @see #setInputType(int)
4754     * @see android.text.InputType
4755     */
4756    public int getInputType() {
4757        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
4758    }
4759
4760    /**
4761     * Change the editor type integer associated with the text view, which
4762     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
4763     * has focus.
4764     * @see #getImeOptions
4765     * @see android.view.inputmethod.EditorInfo
4766     * @attr ref android.R.styleable#TextView_imeOptions
4767     */
4768    public void setImeOptions(int imeOptions) {
4769        createEditorIfNeeded();
4770        mEditor.createInputContentTypeIfNeeded();
4771        mEditor.mInputContentType.imeOptions = imeOptions;
4772    }
4773
4774    /**
4775     * Get the type of the IME editor.
4776     *
4777     * @see #setImeOptions(int)
4778     * @see android.view.inputmethod.EditorInfo
4779     */
4780    public int getImeOptions() {
4781        return mEditor != null && mEditor.mInputContentType != null
4782                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
4783    }
4784
4785    /**
4786     * Change the custom IME action associated with the text view, which
4787     * will be reported to an IME with {@link EditorInfo#actionLabel}
4788     * and {@link EditorInfo#actionId} when it has focus.
4789     * @see #getImeActionLabel
4790     * @see #getImeActionId
4791     * @see android.view.inputmethod.EditorInfo
4792     * @attr ref android.R.styleable#TextView_imeActionLabel
4793     * @attr ref android.R.styleable#TextView_imeActionId
4794     */
4795    public void setImeActionLabel(CharSequence label, int actionId) {
4796        createEditorIfNeeded();
4797        mEditor.createInputContentTypeIfNeeded();
4798        mEditor.mInputContentType.imeActionLabel = label;
4799        mEditor.mInputContentType.imeActionId = actionId;
4800    }
4801
4802    /**
4803     * Get the IME action label previous set with {@link #setImeActionLabel}.
4804     *
4805     * @see #setImeActionLabel
4806     * @see android.view.inputmethod.EditorInfo
4807     */
4808    public CharSequence getImeActionLabel() {
4809        return mEditor != null && mEditor.mInputContentType != null
4810                ? mEditor.mInputContentType.imeActionLabel : null;
4811    }
4812
4813    /**
4814     * Get the IME action ID previous set with {@link #setImeActionLabel}.
4815     *
4816     * @see #setImeActionLabel
4817     * @see android.view.inputmethod.EditorInfo
4818     */
4819    public int getImeActionId() {
4820        return mEditor != null && mEditor.mInputContentType != null
4821                ? mEditor.mInputContentType.imeActionId : 0;
4822    }
4823
4824    /**
4825     * Set a special listener to be called when an action is performed
4826     * on the text view.  This will be called when the enter key is pressed,
4827     * or when an action supplied to the IME is selected by the user.  Setting
4828     * this means that the normal hard key event will not insert a newline
4829     * into the text view, even if it is multi-line; holding down the ALT
4830     * modifier will, however, allow the user to insert a newline character.
4831     */
4832    public void setOnEditorActionListener(OnEditorActionListener l) {
4833        createEditorIfNeeded();
4834        mEditor.createInputContentTypeIfNeeded();
4835        mEditor.mInputContentType.onEditorActionListener = l;
4836    }
4837
4838    /**
4839     * Called when an attached input method calls
4840     * {@link InputConnection#performEditorAction(int)
4841     * InputConnection.performEditorAction()}
4842     * for this text view.  The default implementation will call your action
4843     * listener supplied to {@link #setOnEditorActionListener}, or perform
4844     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
4845     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
4846     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
4847     * EditorInfo.IME_ACTION_DONE}.
4848     *
4849     * <p>For backwards compatibility, if no IME options have been set and the
4850     * text view would not normally advance focus on enter, then
4851     * the NEXT and DONE actions received here will be turned into an enter
4852     * key down/up pair to go through the normal key handling.
4853     *
4854     * @param actionCode The code of the action being performed.
4855     *
4856     * @see #setOnEditorActionListener
4857     */
4858    public void onEditorAction(int actionCode) {
4859        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
4860        if (ict != null) {
4861            if (ict.onEditorActionListener != null) {
4862                if (ict.onEditorActionListener.onEditorAction(this,
4863                        actionCode, null)) {
4864                    return;
4865                }
4866            }
4867
4868            // This is the handling for some default action.
4869            // Note that for backwards compatibility we don't do this
4870            // default handling if explicit ime options have not been given,
4871            // instead turning this into the normal enter key codes that an
4872            // app may be expecting.
4873            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
4874                View v = focusSearch(FOCUS_FORWARD);
4875                if (v != null) {
4876                    if (!v.requestFocus(FOCUS_FORWARD)) {
4877                        throw new IllegalStateException("focus search returned a view " +
4878                                "that wasn't able to take focus!");
4879                    }
4880                }
4881                return;
4882
4883            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4884                View v = focusSearch(FOCUS_BACKWARD);
4885                if (v != null) {
4886                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4887                        throw new IllegalStateException("focus search returned a view " +
4888                                "that wasn't able to take focus!");
4889                    }
4890                }
4891                return;
4892
4893            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4894                InputMethodManager imm = InputMethodManager.peekInstance();
4895                if (imm != null && imm.isActive(this)) {
4896                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4897                }
4898                return;
4899            }
4900        }
4901
4902        ViewRootImpl viewRootImpl = getViewRootImpl();
4903        if (viewRootImpl != null) {
4904            long eventTime = SystemClock.uptimeMillis();
4905            viewRootImpl.dispatchKeyFromIme(
4906                    new KeyEvent(eventTime, eventTime,
4907                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4908                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4909                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4910                    | KeyEvent.FLAG_EDITOR_ACTION));
4911            viewRootImpl.dispatchKeyFromIme(
4912                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4913                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4914                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4915                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4916                    | KeyEvent.FLAG_EDITOR_ACTION));
4917        }
4918    }
4919
4920    /**
4921     * Set the private content type of the text, which is the
4922     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4923     * field that will be filled in when creating an input connection.
4924     *
4925     * @see #getPrivateImeOptions()
4926     * @see EditorInfo#privateImeOptions
4927     * @attr ref android.R.styleable#TextView_privateImeOptions
4928     */
4929    public void setPrivateImeOptions(String type) {
4930        createEditorIfNeeded();
4931        mEditor.createInputContentTypeIfNeeded();
4932        mEditor.mInputContentType.privateImeOptions = type;
4933    }
4934
4935    /**
4936     * Get the private type of the content.
4937     *
4938     * @see #setPrivateImeOptions(String)
4939     * @see EditorInfo#privateImeOptions
4940     */
4941    public String getPrivateImeOptions() {
4942        return mEditor != null && mEditor.mInputContentType != null
4943                ? mEditor.mInputContentType.privateImeOptions : null;
4944    }
4945
4946    /**
4947     * Set the extra input data of the text, which is the
4948     * {@link EditorInfo#extras TextBoxAttribute.extras}
4949     * Bundle that will be filled in when creating an input connection.  The
4950     * given integer is the resource ID of an XML resource holding an
4951     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4952     *
4953     * @see #getInputExtras(boolean)
4954     * @see EditorInfo#extras
4955     * @attr ref android.R.styleable#TextView_editorExtras
4956     */
4957    public void setInputExtras(@XmlRes int xmlResId) throws XmlPullParserException, IOException {
4958        createEditorIfNeeded();
4959        XmlResourceParser parser = getResources().getXml(xmlResId);
4960        mEditor.createInputContentTypeIfNeeded();
4961        mEditor.mInputContentType.extras = new Bundle();
4962        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4963    }
4964
4965    /**
4966     * Retrieve the input extras currently associated with the text view, which
4967     * can be viewed as well as modified.
4968     *
4969     * @param create If true, the extras will be created if they don't already
4970     * exist.  Otherwise, null will be returned if none have been created.
4971     * @see #setInputExtras(int)
4972     * @see EditorInfo#extras
4973     * @attr ref android.R.styleable#TextView_editorExtras
4974     */
4975    public Bundle getInputExtras(boolean create) {
4976        if (mEditor == null && !create) return null;
4977        createEditorIfNeeded();
4978        if (mEditor.mInputContentType == null) {
4979            if (!create) return null;
4980            mEditor.createInputContentTypeIfNeeded();
4981        }
4982        if (mEditor.mInputContentType.extras == null) {
4983            if (!create) return null;
4984            mEditor.mInputContentType.extras = new Bundle();
4985        }
4986        return mEditor.mInputContentType.extras;
4987    }
4988
4989    /**
4990     * Returns the error message that was set to be displayed with
4991     * {@link #setError}, or <code>null</code> if no error was set
4992     * or if it the error was cleared by the widget after user input.
4993     */
4994    public CharSequence getError() {
4995        return mEditor == null ? null : mEditor.mError;
4996    }
4997
4998    /**
4999     * Sets the right-hand compound drawable of the TextView to the "error"
5000     * icon and sets an error message that will be displayed in a popup when
5001     * the TextView has focus.  The icon and error message will be reset to
5002     * null when any key events cause changes to the TextView's text.  If the
5003     * <code>error</code> is <code>null</code>, the error message and icon
5004     * will be cleared.
5005     */
5006    @android.view.RemotableViewMethod
5007    public void setError(CharSequence error) {
5008        if (error == null) {
5009            setError(null, null);
5010        } else {
5011            Drawable dr = getContext().getDrawable(
5012                    com.android.internal.R.drawable.indicator_input_error);
5013
5014            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
5015            setError(error, dr);
5016        }
5017    }
5018
5019    /**
5020     * Sets the right-hand compound drawable of the TextView to the specified
5021     * icon and sets an error message that will be displayed in a popup when
5022     * the TextView has focus.  The icon and error message will be reset to
5023     * null when any key events cause changes to the TextView's text.  The
5024     * drawable must already have had {@link Drawable#setBounds} set on it.
5025     * If the <code>error</code> is <code>null</code>, the error message will
5026     * be cleared (and you should provide a <code>null</code> icon as well).
5027     */
5028    public void setError(CharSequence error, Drawable icon) {
5029        createEditorIfNeeded();
5030        mEditor.setError(error, icon);
5031        notifyViewAccessibilityStateChangedIfNeeded(
5032                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
5033    }
5034
5035    @Override
5036    protected boolean setFrame(int l, int t, int r, int b) {
5037        boolean result = super.setFrame(l, t, r, b);
5038
5039        if (mEditor != null) mEditor.setFrame();
5040
5041        restartMarqueeIfNeeded();
5042
5043        return result;
5044    }
5045
5046    private void restartMarqueeIfNeeded() {
5047        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5048            mRestartMarquee = false;
5049            startMarquee();
5050        }
5051    }
5052
5053    /**
5054     * Sets the list of input filters that will be used if the buffer is
5055     * Editable. Has no effect otherwise.
5056     *
5057     * @attr ref android.R.styleable#TextView_maxLength
5058     */
5059    public void setFilters(InputFilter[] filters) {
5060        if (filters == null) {
5061            throw new IllegalArgumentException();
5062        }
5063
5064        mFilters = filters;
5065
5066        if (mText instanceof Editable) {
5067            setFilters((Editable) mText, filters);
5068        }
5069    }
5070
5071    /**
5072     * Sets the list of input filters on the specified Editable,
5073     * and includes mInput in the list if it is an InputFilter.
5074     */
5075    private void setFilters(Editable e, InputFilter[] filters) {
5076        if (mEditor != null) {
5077            final boolean undoFilter = mEditor.mUndoInputFilter != null;
5078            final boolean keyFilter = mEditor.mKeyListener instanceof InputFilter;
5079            int num = 0;
5080            if (undoFilter) num++;
5081            if (keyFilter) num++;
5082            if (num > 0) {
5083                InputFilter[] nf = new InputFilter[filters.length + num];
5084
5085                System.arraycopy(filters, 0, nf, 0, filters.length);
5086                num = 0;
5087                if (undoFilter) {
5088                    nf[filters.length] = mEditor.mUndoInputFilter;
5089                    num++;
5090                }
5091                if (keyFilter) {
5092                    nf[filters.length + num] = (InputFilter) mEditor.mKeyListener;
5093                }
5094
5095                e.setFilters(nf);
5096                return;
5097            }
5098        }
5099        e.setFilters(filters);
5100    }
5101
5102    /**
5103     * Returns the current list of input filters.
5104     *
5105     * @attr ref android.R.styleable#TextView_maxLength
5106     */
5107    public InputFilter[] getFilters() {
5108        return mFilters;
5109    }
5110
5111    /////////////////////////////////////////////////////////////////////////
5112
5113    private int getBoxHeight(Layout l) {
5114        Insets opticalInsets = isLayoutModeOptical(mParent) ? getOpticalInsets() : Insets.NONE;
5115        int padding = (l == mHintLayout) ?
5116                getCompoundPaddingTop() + getCompoundPaddingBottom() :
5117                getExtendedPaddingTop() + getExtendedPaddingBottom();
5118        return getMeasuredHeight() - padding + opticalInsets.top + opticalInsets.bottom;
5119    }
5120
5121    int getVerticalOffset(boolean forceNormal) {
5122        int voffset = 0;
5123        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5124
5125        Layout l = mLayout;
5126        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5127            l = mHintLayout;
5128        }
5129
5130        if (gravity != Gravity.TOP) {
5131            int boxht = getBoxHeight(l);
5132            int textht = l.getHeight();
5133
5134            if (textht < boxht) {
5135                if (gravity == Gravity.BOTTOM)
5136                    voffset = boxht - textht;
5137                else // (gravity == Gravity.CENTER_VERTICAL)
5138                    voffset = (boxht - textht) >> 1;
5139            }
5140        }
5141        return voffset;
5142    }
5143
5144    private int getBottomVerticalOffset(boolean forceNormal) {
5145        int voffset = 0;
5146        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5147
5148        Layout l = mLayout;
5149        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5150            l = mHintLayout;
5151        }
5152
5153        if (gravity != Gravity.BOTTOM) {
5154            int boxht = getBoxHeight(l);
5155            int textht = l.getHeight();
5156
5157            if (textht < boxht) {
5158                if (gravity == Gravity.TOP)
5159                    voffset = boxht - textht;
5160                else // (gravity == Gravity.CENTER_VERTICAL)
5161                    voffset = (boxht - textht) >> 1;
5162            }
5163        }
5164        return voffset;
5165    }
5166
5167    void invalidateCursorPath() {
5168        if (mHighlightPathBogus) {
5169            invalidateCursor();
5170        } else {
5171            final int horizontalPadding = getCompoundPaddingLeft();
5172            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5173
5174            if (mEditor.mCursorCount == 0) {
5175                synchronized (TEMP_RECTF) {
5176                    /*
5177                     * The reason for this concern about the thickness of the
5178                     * cursor and doing the floor/ceil on the coordinates is that
5179                     * some EditTexts (notably textfields in the Browser) have
5180                     * anti-aliased text where not all the characters are
5181                     * necessarily at integer-multiple locations.  This should
5182                     * make sure the entire cursor gets invalidated instead of
5183                     * sometimes missing half a pixel.
5184                     */
5185                    float thick = (float) Math.ceil(mTextPaint.getStrokeWidth());
5186                    if (thick < 1.0f) {
5187                        thick = 1.0f;
5188                    }
5189
5190                    thick /= 2.0f;
5191
5192                    // mHighlightPath is guaranteed to be non null at that point.
5193                    mHighlightPath.computeBounds(TEMP_RECTF, false);
5194
5195                    invalidate((int) Math.floor(horizontalPadding + TEMP_RECTF.left - thick),
5196                            (int) Math.floor(verticalPadding + TEMP_RECTF.top - thick),
5197                            (int) Math.ceil(horizontalPadding + TEMP_RECTF.right + thick),
5198                            (int) Math.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
5199                }
5200            } else {
5201                for (int i = 0; i < mEditor.mCursorCount; i++) {
5202                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5203                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
5204                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
5205                }
5206            }
5207        }
5208    }
5209
5210    void invalidateCursor() {
5211        int where = getSelectionEnd();
5212
5213        invalidateCursor(where, where, where);
5214    }
5215
5216    private void invalidateCursor(int a, int b, int c) {
5217        if (a >= 0 || b >= 0 || c >= 0) {
5218            int start = Math.min(Math.min(a, b), c);
5219            int end = Math.max(Math.max(a, b), c);
5220            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
5221        }
5222    }
5223
5224    /**
5225     * Invalidates the region of text enclosed between the start and end text offsets.
5226     */
5227    void invalidateRegion(int start, int end, boolean invalidateCursor) {
5228        if (mLayout == null) {
5229            invalidate();
5230        } else {
5231                int lineStart = mLayout.getLineForOffset(start);
5232                int top = mLayout.getLineTop(lineStart);
5233
5234                // This is ridiculous, but the descent from the line above
5235                // can hang down into the line we really want to redraw,
5236                // so we have to invalidate part of the line above to make
5237                // sure everything that needs to be redrawn really is.
5238                // (But not the whole line above, because that would cause
5239                // the same problem with the descenders on the line above it!)
5240                if (lineStart > 0) {
5241                    top -= mLayout.getLineDescent(lineStart - 1);
5242                }
5243
5244                int lineEnd;
5245
5246                if (start == end)
5247                    lineEnd = lineStart;
5248                else
5249                    lineEnd = mLayout.getLineForOffset(end);
5250
5251                int bottom = mLayout.getLineBottom(lineEnd);
5252
5253                // mEditor can be null in case selection is set programmatically.
5254                if (invalidateCursor && mEditor != null) {
5255                    for (int i = 0; i < mEditor.mCursorCount; i++) {
5256                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5257                        top = Math.min(top, bounds.top);
5258                        bottom = Math.max(bottom, bounds.bottom);
5259                    }
5260                }
5261
5262                final int compoundPaddingLeft = getCompoundPaddingLeft();
5263                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5264
5265                int left, right;
5266                if (lineStart == lineEnd && !invalidateCursor) {
5267                    left = (int) mLayout.getPrimaryHorizontal(start);
5268                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
5269                    left += compoundPaddingLeft;
5270                    right += compoundPaddingLeft;
5271                } else {
5272                    // Rectangle bounding box when the region spans several lines
5273                    left = compoundPaddingLeft;
5274                    right = getWidth() - getCompoundPaddingRight();
5275                }
5276
5277                invalidate(mScrollX + left, verticalPadding + top,
5278                        mScrollX + right, verticalPadding + bottom);
5279        }
5280    }
5281
5282    private void registerForPreDraw() {
5283        if (!mPreDrawRegistered) {
5284            getViewTreeObserver().addOnPreDrawListener(this);
5285            mPreDrawRegistered = true;
5286        }
5287    }
5288
5289    private void unregisterForPreDraw() {
5290        getViewTreeObserver().removeOnPreDrawListener(this);
5291        mPreDrawRegistered = false;
5292        mPreDrawListenerDetached = false;
5293    }
5294
5295    /**
5296     * {@inheritDoc}
5297     */
5298    public boolean onPreDraw() {
5299        if (mLayout == null) {
5300            assumeLayout();
5301        }
5302
5303        if (mMovement != null) {
5304            /* This code also provides auto-scrolling when a cursor is moved using a
5305             * CursorController (insertion point or selection limits).
5306             * For selection, ensure start or end is visible depending on controller's state.
5307             */
5308            int curs = getSelectionEnd();
5309            // Do not create the controller if it is not already created.
5310            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
5311                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
5312                curs = getSelectionStart();
5313            }
5314
5315            /*
5316             * TODO: This should really only keep the end in view if
5317             * it already was before the text changed.  I'm not sure
5318             * of a good way to tell from here if it was.
5319             */
5320            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5321                curs = mText.length();
5322            }
5323
5324            if (curs >= 0) {
5325                bringPointIntoView(curs);
5326            }
5327        } else {
5328            bringTextIntoView();
5329        }
5330
5331        // This has to be checked here since:
5332        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
5333        //   a screen rotation) since layout is not yet initialized at that point.
5334        if (mEditor != null && mEditor.mCreatedWithASelection) {
5335            if (mEditor.extractedTextModeWillBeStarted()) {
5336                mEditor.checkFieldAndSelectCurrentWord();
5337            } else {
5338                mEditor.startSelectionActionMode();
5339            }
5340            mEditor.mCreatedWithASelection = false;
5341        }
5342
5343        unregisterForPreDraw();
5344
5345        return true;
5346    }
5347
5348    @Override
5349    protected void onAttachedToWindow() {
5350        super.onAttachedToWindow();
5351
5352        mTemporaryDetach = false;
5353
5354        if (mEditor != null) mEditor.onAttachedToWindow();
5355
5356        if (mPreDrawListenerDetached) {
5357            getViewTreeObserver().addOnPreDrawListener(this);
5358            mPreDrawListenerDetached = false;
5359        }
5360    }
5361
5362    /** @hide */
5363    @Override
5364    protected void onDetachedFromWindowInternal() {
5365        if (mPreDrawRegistered) {
5366            getViewTreeObserver().removeOnPreDrawListener(this);
5367            mPreDrawListenerDetached = true;
5368        }
5369
5370        resetResolvedDrawables();
5371
5372        if (mEditor != null) mEditor.onDetachedFromWindow();
5373
5374        super.onDetachedFromWindowInternal();
5375    }
5376
5377    @Override
5378    public void onScreenStateChanged(int screenState) {
5379        super.onScreenStateChanged(screenState);
5380        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
5381    }
5382
5383    @Override
5384    protected boolean isPaddingOffsetRequired() {
5385        return mShadowRadius != 0 || mDrawables != null;
5386    }
5387
5388    @Override
5389    protected int getLeftPaddingOffset() {
5390        return getCompoundPaddingLeft() - mPaddingLeft +
5391                (int) Math.min(0, mShadowDx - mShadowRadius);
5392    }
5393
5394    @Override
5395    protected int getTopPaddingOffset() {
5396        return (int) Math.min(0, mShadowDy - mShadowRadius);
5397    }
5398
5399    @Override
5400    protected int getBottomPaddingOffset() {
5401        return (int) Math.max(0, mShadowDy + mShadowRadius);
5402    }
5403
5404    private int getFudgedPaddingRight() {
5405        // Add sufficient space for cursor and tone marks
5406        int cursorWidth = 2 + (int)mTextPaint.density; // adequate for Material cursors
5407        return Math.max(0, getCompoundPaddingRight() - (cursorWidth - 1));
5408    }
5409
5410    @Override
5411    protected int getRightPaddingOffset() {
5412        return -(getFudgedPaddingRight() - mPaddingRight) +
5413                (int) Math.max(0, mShadowDx + mShadowRadius);
5414    }
5415
5416    @Override
5417    protected boolean verifyDrawable(Drawable who) {
5418        final boolean verified = super.verifyDrawable(who);
5419        if (!verified && mDrawables != null) {
5420            for (Drawable dr : mDrawables.mShowing) {
5421                if (who == dr) {
5422                    return true;
5423                }
5424            }
5425        }
5426        return verified;
5427    }
5428
5429    @Override
5430    public void jumpDrawablesToCurrentState() {
5431        super.jumpDrawablesToCurrentState();
5432        if (mDrawables != null) {
5433            for (Drawable dr : mDrawables.mShowing) {
5434                if (dr != null) {
5435                    dr.jumpToCurrentState();
5436                }
5437            }
5438        }
5439    }
5440
5441    @Override
5442    public void invalidateDrawable(Drawable drawable) {
5443        boolean handled = false;
5444
5445        if (verifyDrawable(drawable)) {
5446            final Rect dirty = drawable.getBounds();
5447            int scrollX = mScrollX;
5448            int scrollY = mScrollY;
5449
5450            // IMPORTANT: The coordinates below are based on the coordinates computed
5451            // for each compound drawable in onDraw(). Make sure to update each section
5452            // accordingly.
5453            final TextView.Drawables drawables = mDrawables;
5454            if (drawables != null) {
5455                if (drawable == drawables.mShowing[Drawables.LEFT]) {
5456                    final int compoundPaddingTop = getCompoundPaddingTop();
5457                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5458                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5459
5460                    scrollX += mPaddingLeft;
5461                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
5462                    handled = true;
5463                } else if (drawable == drawables.mShowing[Drawables.RIGHT]) {
5464                    final int compoundPaddingTop = getCompoundPaddingTop();
5465                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5466                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5467
5468                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
5469                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
5470                    handled = true;
5471                } else if (drawable == drawables.mShowing[Drawables.TOP]) {
5472                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5473                    final int compoundPaddingRight = getCompoundPaddingRight();
5474                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5475
5476                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
5477                    scrollY += mPaddingTop;
5478                    handled = true;
5479                } else if (drawable == drawables.mShowing[Drawables.BOTTOM]) {
5480                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5481                    final int compoundPaddingRight = getCompoundPaddingRight();
5482                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5483
5484                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
5485                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
5486                    handled = true;
5487                }
5488            }
5489
5490            if (handled) {
5491                invalidate(dirty.left + scrollX, dirty.top + scrollY,
5492                        dirty.right + scrollX, dirty.bottom + scrollY);
5493            }
5494        }
5495
5496        if (!handled) {
5497            super.invalidateDrawable(drawable);
5498        }
5499    }
5500
5501    @Override
5502    public boolean hasOverlappingRendering() {
5503        // horizontal fading edge causes SaveLayerAlpha, which doesn't support alpha modulation
5504        return ((getBackground() != null && getBackground().getCurrent() != null)
5505                || mText instanceof Spannable || hasSelection()
5506                || isHorizontalFadingEdgeEnabled());
5507    }
5508
5509    /**
5510     *
5511     * Returns the state of the {@code textIsSelectable} flag (See
5512     * {@link #setTextIsSelectable setTextIsSelectable()}). Although you have to set this flag
5513     * to allow users to select and copy text in a non-editable TextView, the content of an
5514     * {@link EditText} can always be selected, independently of the value of this flag.
5515     * <p>
5516     *
5517     * @return True if the text displayed in this TextView can be selected by the user.
5518     *
5519     * @attr ref android.R.styleable#TextView_textIsSelectable
5520     */
5521    public boolean isTextSelectable() {
5522        return mEditor == null ? false : mEditor.mTextIsSelectable;
5523    }
5524
5525    /**
5526     * Sets whether the content of this view is selectable by the user. The default is
5527     * {@code false}, meaning that the content is not selectable.
5528     * <p>
5529     * When you use a TextView to display a useful piece of information to the user (such as a
5530     * contact's address), make it selectable, so that the user can select and copy its
5531     * content. You can also use set the XML attribute
5532     * {@link android.R.styleable#TextView_textIsSelectable} to "true".
5533     * <p>
5534     * When you call this method to set the value of {@code textIsSelectable}, it sets
5535     * the flags {@code focusable}, {@code focusableInTouchMode}, {@code clickable},
5536     * and {@code longClickable} to the same value. These flags correspond to the attributes
5537     * {@link android.R.styleable#View_focusable android:focusable},
5538     * {@link android.R.styleable#View_focusableInTouchMode android:focusableInTouchMode},
5539     * {@link android.R.styleable#View_clickable android:clickable}, and
5540     * {@link android.R.styleable#View_longClickable android:longClickable}. To restore any of these
5541     * flags to a state you had set previously, call one or more of the following methods:
5542     * {@link #setFocusable(boolean) setFocusable()},
5543     * {@link #setFocusableInTouchMode(boolean) setFocusableInTouchMode()},
5544     * {@link #setClickable(boolean) setClickable()} or
5545     * {@link #setLongClickable(boolean) setLongClickable()}.
5546     *
5547     * @param selectable Whether the content of this TextView should be selectable.
5548     */
5549    public void setTextIsSelectable(boolean selectable) {
5550        if (!selectable && mEditor == null) return; // false is default value with no edit data
5551
5552        createEditorIfNeeded();
5553        if (mEditor.mTextIsSelectable == selectable) return;
5554
5555        mEditor.mTextIsSelectable = selectable;
5556        setFocusableInTouchMode(selectable);
5557        setFocusable(selectable);
5558        setClickable(selectable);
5559        setLongClickable(selectable);
5560
5561        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
5562
5563        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
5564        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
5565
5566        // Called by setText above, but safer in case of future code changes
5567        mEditor.prepareCursorControllers();
5568    }
5569
5570    @Override
5571    protected int[] onCreateDrawableState(int extraSpace) {
5572        final int[] drawableState;
5573
5574        if (mSingleLine) {
5575            drawableState = super.onCreateDrawableState(extraSpace);
5576        } else {
5577            drawableState = super.onCreateDrawableState(extraSpace + 1);
5578            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
5579        }
5580
5581        if (isTextSelectable()) {
5582            // Disable pressed state, which was introduced when TextView was made clickable.
5583            // Prevents text color change.
5584            // setClickable(false) would have a similar effect, but it also disables focus changes
5585            // and long press actions, which are both needed by text selection.
5586            final int length = drawableState.length;
5587            for (int i = 0; i < length; i++) {
5588                if (drawableState[i] == R.attr.state_pressed) {
5589                    final int[] nonPressedState = new int[length - 1];
5590                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
5591                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
5592                    return nonPressedState;
5593                }
5594            }
5595        }
5596
5597        return drawableState;
5598    }
5599
5600    private Path getUpdatedHighlightPath() {
5601        Path highlight = null;
5602        Paint highlightPaint = mHighlightPaint;
5603
5604        final int selStart = getSelectionStart();
5605        final int selEnd = getSelectionEnd();
5606        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
5607            if (selStart == selEnd) {
5608                if (mEditor != null && mEditor.isCursorVisible() &&
5609                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
5610                        (2 * Editor.BLINK) < Editor.BLINK) {
5611                    if (mHighlightPathBogus) {
5612                        if (mHighlightPath == null) mHighlightPath = new Path();
5613                        mHighlightPath.reset();
5614                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
5615                        mEditor.updateCursorsPositions();
5616                        mHighlightPathBogus = false;
5617                    }
5618
5619                    // XXX should pass to skin instead of drawing directly
5620                    highlightPaint.setColor(mCurTextColor);
5621                    highlightPaint.setStyle(Paint.Style.STROKE);
5622                    highlight = mHighlightPath;
5623                }
5624            } else {
5625                if (mHighlightPathBogus) {
5626                    if (mHighlightPath == null) mHighlightPath = new Path();
5627                    mHighlightPath.reset();
5628                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5629                    mHighlightPathBogus = false;
5630                }
5631
5632                // XXX should pass to skin instead of drawing directly
5633                highlightPaint.setColor(mHighlightColor);
5634                highlightPaint.setStyle(Paint.Style.FILL);
5635
5636                highlight = mHighlightPath;
5637            }
5638        }
5639        return highlight;
5640    }
5641
5642    /**
5643     * @hide
5644     */
5645    public int getHorizontalOffsetForDrawables() {
5646        return 0;
5647    }
5648
5649    @Override
5650    protected void onDraw(Canvas canvas) {
5651        restartMarqueeIfNeeded();
5652
5653        // Draw the background for this view
5654        super.onDraw(canvas);
5655
5656        final int compoundPaddingLeft = getCompoundPaddingLeft();
5657        final int compoundPaddingTop = getCompoundPaddingTop();
5658        final int compoundPaddingRight = getCompoundPaddingRight();
5659        final int compoundPaddingBottom = getCompoundPaddingBottom();
5660        final int scrollX = mScrollX;
5661        final int scrollY = mScrollY;
5662        final int right = mRight;
5663        final int left = mLeft;
5664        final int bottom = mBottom;
5665        final int top = mTop;
5666        final boolean isLayoutRtl = isLayoutRtl();
5667        final int offset = getHorizontalOffsetForDrawables();
5668        final int leftOffset = isLayoutRtl ? 0 : offset;
5669        final int rightOffset = isLayoutRtl ? offset : 0 ;
5670
5671        final Drawables dr = mDrawables;
5672        if (dr != null) {
5673            /*
5674             * Compound, not extended, because the icon is not clipped
5675             * if the text height is smaller.
5676             */
5677
5678            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
5679            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
5680
5681            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5682            // Make sure to update invalidateDrawable() when changing this code.
5683            if (dr.mShowing[Drawables.LEFT] != null) {
5684                canvas.save();
5685                canvas.translate(scrollX + mPaddingLeft + leftOffset,
5686                                 scrollY + compoundPaddingTop +
5687                                 (vspace - dr.mDrawableHeightLeft) / 2);
5688                dr.mShowing[Drawables.LEFT].draw(canvas);
5689                canvas.restore();
5690            }
5691
5692            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5693            // Make sure to update invalidateDrawable() when changing this code.
5694            if (dr.mShowing[Drawables.RIGHT] != null) {
5695                canvas.save();
5696                canvas.translate(scrollX + right - left - mPaddingRight
5697                        - dr.mDrawableSizeRight - rightOffset,
5698                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
5699                dr.mShowing[Drawables.RIGHT].draw(canvas);
5700                canvas.restore();
5701            }
5702
5703            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5704            // Make sure to update invalidateDrawable() when changing this code.
5705            if (dr.mShowing[Drawables.TOP] != null) {
5706                canvas.save();
5707                canvas.translate(scrollX + compoundPaddingLeft +
5708                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
5709                dr.mShowing[Drawables.TOP].draw(canvas);
5710                canvas.restore();
5711            }
5712
5713            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5714            // Make sure to update invalidateDrawable() when changing this code.
5715            if (dr.mShowing[Drawables.BOTTOM] != null) {
5716                canvas.save();
5717                canvas.translate(scrollX + compoundPaddingLeft +
5718                        (hspace - dr.mDrawableWidthBottom) / 2,
5719                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
5720                dr.mShowing[Drawables.BOTTOM].draw(canvas);
5721                canvas.restore();
5722            }
5723        }
5724
5725        int color = mCurTextColor;
5726
5727        if (mLayout == null) {
5728            assumeLayout();
5729        }
5730
5731        Layout layout = mLayout;
5732
5733        if (mHint != null && mText.length() == 0) {
5734            if (mHintTextColor != null) {
5735                color = mCurHintTextColor;
5736            }
5737
5738            layout = mHintLayout;
5739        }
5740
5741        mTextPaint.setColor(color);
5742        mTextPaint.drawableState = getDrawableState();
5743
5744        canvas.save();
5745        /*  Would be faster if we didn't have to do this. Can we chop the
5746            (displayable) text so that we don't need to do this ever?
5747        */
5748
5749        int extendedPaddingTop = getExtendedPaddingTop();
5750        int extendedPaddingBottom = getExtendedPaddingBottom();
5751
5752        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5753        final int maxScrollY = mLayout.getHeight() - vspace;
5754
5755        float clipLeft = compoundPaddingLeft + scrollX;
5756        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
5757        float clipRight = right - left - getFudgedPaddingRight() + scrollX;
5758        float clipBottom = bottom - top + scrollY -
5759                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
5760
5761        if (mShadowRadius != 0) {
5762            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
5763            clipRight += Math.max(0, mShadowDx + mShadowRadius);
5764
5765            clipTop += Math.min(0, mShadowDy - mShadowRadius);
5766            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
5767        }
5768
5769        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
5770
5771        int voffsetText = 0;
5772        int voffsetCursor = 0;
5773
5774        // translate in by our padding
5775        /* shortcircuit calling getVerticaOffset() */
5776        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5777            voffsetText = getVerticalOffset(false);
5778            voffsetCursor = getVerticalOffset(true);
5779        }
5780        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
5781
5782        final int layoutDirection = getLayoutDirection();
5783        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
5784        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
5785                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5786            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
5787                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
5788                final int width = mRight - mLeft;
5789                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
5790                final float dx = mLayout.getLineRight(0) - (width - padding);
5791                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5792            }
5793
5794            if (mMarquee != null && mMarquee.isRunning()) {
5795                final float dx = -mMarquee.getScroll();
5796                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5797            }
5798        }
5799
5800        final int cursorOffsetVertical = voffsetCursor - voffsetText;
5801
5802        Path highlight = getUpdatedHighlightPath();
5803        if (mEditor != null) {
5804            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
5805        } else {
5806            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5807        }
5808
5809        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
5810            final float dx = mMarquee.getGhostOffset();
5811            canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5812            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5813        }
5814
5815        canvas.restore();
5816    }
5817
5818    @Override
5819    public void getFocusedRect(Rect r) {
5820        if (mLayout == null) {
5821            super.getFocusedRect(r);
5822            return;
5823        }
5824
5825        int selEnd = getSelectionEnd();
5826        if (selEnd < 0) {
5827            super.getFocusedRect(r);
5828            return;
5829        }
5830
5831        int selStart = getSelectionStart();
5832        if (selStart < 0 || selStart >= selEnd) {
5833            int line = mLayout.getLineForOffset(selEnd);
5834            r.top = mLayout.getLineTop(line);
5835            r.bottom = mLayout.getLineBottom(line);
5836            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
5837            r.right = r.left + 4;
5838        } else {
5839            int lineStart = mLayout.getLineForOffset(selStart);
5840            int lineEnd = mLayout.getLineForOffset(selEnd);
5841            r.top = mLayout.getLineTop(lineStart);
5842            r.bottom = mLayout.getLineBottom(lineEnd);
5843            if (lineStart == lineEnd) {
5844                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
5845                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
5846            } else {
5847                // Selection extends across multiple lines -- make the focused
5848                // rect cover the entire width.
5849                if (mHighlightPathBogus) {
5850                    if (mHighlightPath == null) mHighlightPath = new Path();
5851                    mHighlightPath.reset();
5852                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5853                    mHighlightPathBogus = false;
5854                }
5855                synchronized (TEMP_RECTF) {
5856                    mHighlightPath.computeBounds(TEMP_RECTF, true);
5857                    r.left = (int)TEMP_RECTF.left-1;
5858                    r.right = (int)TEMP_RECTF.right+1;
5859                }
5860            }
5861        }
5862
5863        // Adjust for padding and gravity.
5864        int paddingLeft = getCompoundPaddingLeft();
5865        int paddingTop = getExtendedPaddingTop();
5866        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5867            paddingTop += getVerticalOffset(false);
5868        }
5869        r.offset(paddingLeft, paddingTop);
5870        int paddingBottom = getExtendedPaddingBottom();
5871        r.bottom += paddingBottom;
5872    }
5873
5874    /**
5875     * Return the number of lines of text, or 0 if the internal Layout has not
5876     * been built.
5877     */
5878    public int getLineCount() {
5879        return mLayout != null ? mLayout.getLineCount() : 0;
5880    }
5881
5882    /**
5883     * Return the baseline for the specified line (0...getLineCount() - 1)
5884     * If bounds is not null, return the top, left, right, bottom extents
5885     * of the specified line in it. If the internal Layout has not been built,
5886     * return 0 and set bounds to (0, 0, 0, 0)
5887     * @param line which line to examine (0..getLineCount() - 1)
5888     * @param bounds Optional. If not null, it returns the extent of the line
5889     * @return the Y-coordinate of the baseline
5890     */
5891    public int getLineBounds(int line, Rect bounds) {
5892        if (mLayout == null) {
5893            if (bounds != null) {
5894                bounds.set(0, 0, 0, 0);
5895            }
5896            return 0;
5897        }
5898        else {
5899            int baseline = mLayout.getLineBounds(line, bounds);
5900
5901            int voffset = getExtendedPaddingTop();
5902            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5903                voffset += getVerticalOffset(true);
5904            }
5905            if (bounds != null) {
5906                bounds.offset(getCompoundPaddingLeft(), voffset);
5907            }
5908            return baseline + voffset;
5909        }
5910    }
5911
5912    @Override
5913    public int getBaseline() {
5914        if (mLayout == null) {
5915            return super.getBaseline();
5916        }
5917
5918        return getBaselineOffset() + mLayout.getLineBaseline(0);
5919    }
5920
5921    int getBaselineOffset() {
5922        int voffset = 0;
5923        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5924            voffset = getVerticalOffset(true);
5925        }
5926
5927        if (isLayoutModeOptical(mParent)) {
5928            voffset -= getOpticalInsets().top;
5929        }
5930
5931        return getExtendedPaddingTop() + voffset;
5932    }
5933
5934    /**
5935     * @hide
5936     */
5937    @Override
5938    protected int getFadeTop(boolean offsetRequired) {
5939        if (mLayout == null) return 0;
5940
5941        int voffset = 0;
5942        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5943            voffset = getVerticalOffset(true);
5944        }
5945
5946        if (offsetRequired) voffset += getTopPaddingOffset();
5947
5948        return getExtendedPaddingTop() + voffset;
5949    }
5950
5951    /**
5952     * @hide
5953     */
5954    @Override
5955    protected int getFadeHeight(boolean offsetRequired) {
5956        return mLayout != null ? mLayout.getHeight() : 0;
5957    }
5958
5959    @Override
5960    public PointerIcon getPointerIcon(MotionEvent event, float x, float y) {
5961        if (mText instanceof Spannable && mLinksClickable) {
5962            final int offset = getOffsetForPosition(x, y);
5963            final ClickableSpan[] clickables = ((Spannable) mText).getSpans(offset, offset,
5964                    ClickableSpan.class);
5965            if (clickables.length > 0) {
5966                return PointerIcon.getSystemIcon(mContext, PointerIcon.STYLE_HAND);
5967            }
5968        }
5969        if (isTextSelectable() || isTextEditable()) {
5970            return PointerIcon.getSystemIcon(mContext, PointerIcon.STYLE_TEXT);
5971        }
5972        return super.getPointerIcon(event, x, y);
5973    }
5974
5975    @Override
5976    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
5977        // Note: If the IME is in fullscreen mode and IMS#mExtractEditText is in text action mode,
5978        // InputMethodService#onKeyDown and InputMethodService#onKeyUp are responsible to call
5979        // InputMethodService#mExtractEditText.maybeHandleBackInTextActionMode(event).
5980        if (keyCode == KeyEvent.KEYCODE_BACK && handleBackInTextActionModeIfNeeded(event)) {
5981            return true;
5982        }
5983        return super.onKeyPreIme(keyCode, event);
5984    }
5985
5986    /**
5987     * @hide
5988     */
5989    public boolean handleBackInTextActionModeIfNeeded(KeyEvent event) {
5990        // Do nothing unless mEditor is in text action mode.
5991        if (mEditor == null || mEditor.mTextActionMode == null) {
5992            return false;
5993        }
5994
5995        if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
5996            KeyEvent.DispatcherState state = getKeyDispatcherState();
5997            if (state != null) {
5998                state.startTracking(event, this);
5999            }
6000            return true;
6001        } else if (event.getAction() == KeyEvent.ACTION_UP) {
6002            KeyEvent.DispatcherState state = getKeyDispatcherState();
6003            if (state != null) {
6004                state.handleUpEvent(event);
6005            }
6006            if (event.isTracking() && !event.isCanceled()) {
6007                stopTextActionMode();
6008                return true;
6009            }
6010        }
6011        return false;
6012    }
6013
6014    @Override
6015    public boolean onKeyDown(int keyCode, KeyEvent event) {
6016        final int which = doKeyDown(keyCode, event, null);
6017        if (which == KEY_EVENT_NOT_HANDLED) {
6018            return super.onKeyDown(keyCode, event);
6019        }
6020
6021        return true;
6022    }
6023
6024    @Override
6025    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
6026        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
6027        final int which = doKeyDown(keyCode, down, event);
6028        if (which == KEY_EVENT_NOT_HANDLED) {
6029            // Go through default dispatching.
6030            return super.onKeyMultiple(keyCode, repeatCount, event);
6031        }
6032        if (which == KEY_EVENT_HANDLED) {
6033            // Consumed the whole thing.
6034            return true;
6035        }
6036
6037        repeatCount--;
6038
6039        // We are going to dispatch the remaining events to either the input
6040        // or movement method.  To do this, we will just send a repeated stream
6041        // of down and up events until we have done the complete repeatCount.
6042        // It would be nice if those interfaces had an onKeyMultiple() method,
6043        // but adding that is a more complicated change.
6044        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
6045        if (which == KEY_DOWN_HANDLED_BY_KEY_LISTENER) {
6046            // mEditor and mEditor.mInput are not null from doKeyDown
6047            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
6048            while (--repeatCount > 0) {
6049                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
6050                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
6051            }
6052            hideErrorIfUnchanged();
6053
6054        } else if (which == KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD) {
6055            // mMovement is not null from doKeyDown
6056            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6057            while (--repeatCount > 0) {
6058                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
6059                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6060            }
6061        }
6062
6063        return true;
6064    }
6065
6066    /**
6067     * Returns true if pressing ENTER in this field advances focus instead
6068     * of inserting the character.  This is true mostly in single-line fields,
6069     * but also in mail addresses and subjects which will display on multiple
6070     * lines but where it doesn't make sense to insert newlines.
6071     */
6072    private boolean shouldAdvanceFocusOnEnter() {
6073        if (getKeyListener() == null) {
6074            return false;
6075        }
6076
6077        if (mSingleLine) {
6078            return true;
6079        }
6080
6081        if (mEditor != null &&
6082                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6083            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6084            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
6085                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
6086                return true;
6087            }
6088        }
6089
6090        return false;
6091    }
6092
6093    /**
6094     * Returns true if pressing TAB in this field advances focus instead
6095     * of inserting the character.  Insert tabs only in multi-line editors.
6096     */
6097    private boolean shouldAdvanceFocusOnTab() {
6098        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
6099                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6100            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6101            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
6102                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
6103                return false;
6104            }
6105        }
6106        return true;
6107    }
6108
6109    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
6110        if (!isEnabled()) {
6111            return KEY_EVENT_NOT_HANDLED;
6112        }
6113
6114        // If this is the initial keydown, we don't want to prevent a movement away from this view.
6115        // While this shouldn't be necessary because any time we're preventing default movement we
6116        // should be restricting the focus to remain within this view, thus we'll also receive
6117        // the key up event, occasionally key up events will get dropped and we don't want to
6118        // prevent the user from traversing out of this on the next key down.
6119        if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6120            mPreventDefaultMovement = false;
6121        }
6122
6123        switch (keyCode) {
6124            case KeyEvent.KEYCODE_ENTER:
6125                if (event.hasNoModifiers()) {
6126                    // When mInputContentType is set, we know that we are
6127                    // running in a "modern" cupcake environment, so don't need
6128                    // to worry about the application trying to capture
6129                    // enter key events.
6130                    if (mEditor != null && mEditor.mInputContentType != null) {
6131                        // If there is an action listener, given them a
6132                        // chance to consume the event.
6133                        if (mEditor.mInputContentType.onEditorActionListener != null &&
6134                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6135                                this, EditorInfo.IME_NULL, event)) {
6136                            mEditor.mInputContentType.enterDown = true;
6137                            // We are consuming the enter key for them.
6138                            return KEY_EVENT_HANDLED;
6139                        }
6140                    }
6141
6142                    // If our editor should move focus when enter is pressed, or
6143                    // this is a generated event from an IME action button, then
6144                    // don't let it be inserted into the text.
6145                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6146                            || shouldAdvanceFocusOnEnter()) {
6147                        if (hasOnClickListeners()) {
6148                            return KEY_EVENT_NOT_HANDLED;
6149                        }
6150                        return KEY_EVENT_HANDLED;
6151                    }
6152                }
6153                break;
6154
6155            case KeyEvent.KEYCODE_DPAD_CENTER:
6156                if (event.hasNoModifiers()) {
6157                    if (shouldAdvanceFocusOnEnter()) {
6158                        return KEY_EVENT_NOT_HANDLED;
6159                    }
6160                }
6161                break;
6162
6163            case KeyEvent.KEYCODE_TAB:
6164                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
6165                    if (shouldAdvanceFocusOnTab()) {
6166                        return KEY_EVENT_NOT_HANDLED;
6167                    }
6168                }
6169                break;
6170
6171                // Has to be done on key down (and not on key up) to correctly be intercepted.
6172            case KeyEvent.KEYCODE_BACK:
6173                if (mEditor != null && mEditor.mTextActionMode != null) {
6174                    stopTextActionMode();
6175                    return KEY_EVENT_HANDLED;
6176                }
6177                break;
6178
6179            case KeyEvent.KEYCODE_CUT:
6180                if (event.hasNoModifiers() && canCut()) {
6181                    if (onTextContextMenuItem(ID_CUT)) {
6182                        return KEY_EVENT_HANDLED;
6183                    }
6184                }
6185                break;
6186
6187            case KeyEvent.KEYCODE_COPY:
6188                if (event.hasNoModifiers() && canCopy()) {
6189                    if (onTextContextMenuItem(ID_COPY)) {
6190                        return KEY_EVENT_HANDLED;
6191                    }
6192                }
6193                break;
6194
6195            case KeyEvent.KEYCODE_PASTE:
6196                if (event.hasNoModifiers() && canPaste()) {
6197                    if (onTextContextMenuItem(ID_PASTE)) {
6198                        return KEY_EVENT_HANDLED;
6199                    }
6200                }
6201                break;
6202        }
6203
6204        if (mEditor != null && mEditor.mKeyListener != null) {
6205            boolean doDown = true;
6206            if (otherEvent != null) {
6207                try {
6208                    beginBatchEdit();
6209                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
6210                            otherEvent);
6211                    hideErrorIfUnchanged();
6212                    doDown = false;
6213                    if (handled) {
6214                        return KEY_EVENT_HANDLED;
6215                    }
6216                } catch (AbstractMethodError e) {
6217                    // onKeyOther was added after 1.0, so if it isn't
6218                    // implemented we need to try to dispatch as a regular down.
6219                } finally {
6220                    endBatchEdit();
6221                }
6222            }
6223
6224            if (doDown) {
6225                beginBatchEdit();
6226                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
6227                        keyCode, event);
6228                endBatchEdit();
6229                hideErrorIfUnchanged();
6230                if (handled) return KEY_DOWN_HANDLED_BY_KEY_LISTENER;
6231            }
6232        }
6233
6234        // bug 650865: sometimes we get a key event before a layout.
6235        // don't try to move around if we don't know the layout.
6236
6237        if (mMovement != null && mLayout != null) {
6238            boolean doDown = true;
6239            if (otherEvent != null) {
6240                try {
6241                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
6242                            otherEvent);
6243                    doDown = false;
6244                    if (handled) {
6245                        return KEY_EVENT_HANDLED;
6246                    }
6247                } catch (AbstractMethodError e) {
6248                    // onKeyOther was added after 1.0, so if it isn't
6249                    // implemented we need to try to dispatch as a regular down.
6250                }
6251            }
6252            if (doDown) {
6253                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event)) {
6254                    if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6255                        mPreventDefaultMovement = true;
6256                    }
6257                    return KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD;
6258                }
6259            }
6260        }
6261
6262        return mPreventDefaultMovement && !KeyEvent.isModifierKey(keyCode) ?
6263                KEY_EVENT_HANDLED : KEY_EVENT_NOT_HANDLED;
6264    }
6265
6266    /**
6267     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
6268     * can be recorded.
6269     * @hide
6270     */
6271    public void resetErrorChangedFlag() {
6272        /*
6273         * Keep track of what the error was before doing the input
6274         * so that if an input filter changed the error, we leave
6275         * that error showing.  Otherwise, we take down whatever
6276         * error was showing when the user types something.
6277         */
6278        if (mEditor != null) mEditor.mErrorWasChanged = false;
6279    }
6280
6281    /**
6282     * @hide
6283     */
6284    public void hideErrorIfUnchanged() {
6285        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
6286            setError(null, null);
6287        }
6288    }
6289
6290    @Override
6291    public boolean onKeyUp(int keyCode, KeyEvent event) {
6292        if (!isEnabled()) {
6293            return super.onKeyUp(keyCode, event);
6294        }
6295
6296        if (!KeyEvent.isModifierKey(keyCode)) {
6297            mPreventDefaultMovement = false;
6298        }
6299
6300        switch (keyCode) {
6301            case KeyEvent.KEYCODE_DPAD_CENTER:
6302                if (event.hasNoModifiers()) {
6303                    /*
6304                     * If there is a click listener, just call through to
6305                     * super, which will invoke it.
6306                     *
6307                     * If there isn't a click listener, try to show the soft
6308                     * input method.  (It will also
6309                     * call performClick(), but that won't do anything in
6310                     * this case.)
6311                     */
6312                    if (!hasOnClickListeners()) {
6313                        if (mMovement != null && mText instanceof Editable
6314                                && mLayout != null && onCheckIsTextEditor()) {
6315                            InputMethodManager imm = InputMethodManager.peekInstance();
6316                            viewClicked(imm);
6317                            if (imm != null && getShowSoftInputOnFocus()) {
6318                                imm.showSoftInput(this, 0);
6319                            }
6320                        }
6321                    }
6322                }
6323                return super.onKeyUp(keyCode, event);
6324
6325            case KeyEvent.KEYCODE_ENTER:
6326                if (event.hasNoModifiers()) {
6327                    if (mEditor != null && mEditor.mInputContentType != null
6328                            && mEditor.mInputContentType.onEditorActionListener != null
6329                            && mEditor.mInputContentType.enterDown) {
6330                        mEditor.mInputContentType.enterDown = false;
6331                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6332                                this, EditorInfo.IME_NULL, event)) {
6333                            return true;
6334                        }
6335                    }
6336
6337                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6338                            || shouldAdvanceFocusOnEnter()) {
6339                        /*
6340                         * If there is a click listener, just call through to
6341                         * super, which will invoke it.
6342                         *
6343                         * If there isn't a click listener, try to advance focus,
6344                         * but still call through to super, which will reset the
6345                         * pressed state and longpress state.  (It will also
6346                         * call performClick(), but that won't do anything in
6347                         * this case.)
6348                         */
6349                        if (!hasOnClickListeners()) {
6350                            View v = focusSearch(FOCUS_DOWN);
6351
6352                            if (v != null) {
6353                                if (!v.requestFocus(FOCUS_DOWN)) {
6354                                    throw new IllegalStateException(
6355                                            "focus search returned a view " +
6356                                            "that wasn't able to take focus!");
6357                                }
6358
6359                                /*
6360                                 * Return true because we handled the key; super
6361                                 * will return false because there was no click
6362                                 * listener.
6363                                 */
6364                                super.onKeyUp(keyCode, event);
6365                                return true;
6366                            } else if ((event.getFlags()
6367                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
6368                                // No target for next focus, but make sure the IME
6369                                // if this came from it.
6370                                InputMethodManager imm = InputMethodManager.peekInstance();
6371                                if (imm != null && imm.isActive(this)) {
6372                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
6373                                }
6374                            }
6375                        }
6376                    }
6377                    return super.onKeyUp(keyCode, event);
6378                }
6379                break;
6380        }
6381
6382        if (mEditor != null && mEditor.mKeyListener != null)
6383            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
6384                return true;
6385
6386        if (mMovement != null && mLayout != null)
6387            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
6388                return true;
6389
6390        return super.onKeyUp(keyCode, event);
6391    }
6392
6393    @Override
6394    public boolean onCheckIsTextEditor() {
6395        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
6396    }
6397
6398    @Override
6399    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
6400        if (onCheckIsTextEditor() && isEnabled()) {
6401            mEditor.createInputMethodStateIfNeeded();
6402            outAttrs.inputType = getInputType();
6403            if (mEditor.mInputContentType != null) {
6404                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
6405                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
6406                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
6407                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
6408                outAttrs.extras = mEditor.mInputContentType.extras;
6409            } else {
6410                outAttrs.imeOptions = EditorInfo.IME_NULL;
6411            }
6412            if (focusSearch(FOCUS_DOWN) != null) {
6413                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
6414            }
6415            if (focusSearch(FOCUS_UP) != null) {
6416                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
6417            }
6418            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
6419                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
6420                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
6421                    // An action has not been set, but the enter key will move to
6422                    // the next focus, so set the action to that.
6423                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
6424                } else {
6425                    // An action has not been set, and there is no focus to move
6426                    // to, so let's just supply a "done" action.
6427                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
6428                }
6429                if (!shouldAdvanceFocusOnEnter()) {
6430                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6431                }
6432            }
6433            if (isMultilineInputType(outAttrs.inputType)) {
6434                // Multi-line text editors should always show an enter key.
6435                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6436            }
6437            outAttrs.hintText = mHint;
6438            if (mText instanceof Editable) {
6439                InputConnection ic = new EditableInputConnection(this);
6440                outAttrs.initialSelStart = getSelectionStart();
6441                outAttrs.initialSelEnd = getSelectionEnd();
6442                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
6443                return ic;
6444            }
6445            // LocaleList is designed to be immutable.  This is theoretically equivalent to copy
6446            // the snapshot of the current text locales.
6447            outAttrs.locales = getTextLocales();
6448        }
6449        return null;
6450    }
6451
6452    /**
6453     * If this TextView contains editable content, extract a portion of it
6454     * based on the information in <var>request</var> in to <var>outText</var>.
6455     * @return Returns true if the text was successfully extracted, else false.
6456     */
6457    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
6458        createEditorIfNeeded();
6459        return mEditor.extractText(request, outText);
6460    }
6461
6462    /**
6463     * This is used to remove all style-impacting spans from text before new
6464     * extracted text is being replaced into it, so that we don't have any
6465     * lingering spans applied during the replace.
6466     */
6467    static void removeParcelableSpans(Spannable spannable, int start, int end) {
6468        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
6469        int i = spans.length;
6470        while (i > 0) {
6471            i--;
6472            spannable.removeSpan(spans[i]);
6473        }
6474    }
6475
6476    /**
6477     * Apply to this text view the given extracted text, as previously
6478     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
6479     */
6480    public void setExtractedText(ExtractedText text) {
6481        Editable content = getEditableText();
6482        if (text.text != null) {
6483            if (content == null) {
6484                setText(text.text, TextView.BufferType.EDITABLE);
6485            } else {
6486                int start = 0;
6487                int end = content.length();
6488
6489                if (text.partialStartOffset >= 0) {
6490                    final int N = content.length();
6491                    start = text.partialStartOffset;
6492                    if (start > N) start = N;
6493                    end = text.partialEndOffset;
6494                    if (end > N) end = N;
6495                }
6496
6497                removeParcelableSpans(content, start, end);
6498                if (TextUtils.equals(content.subSequence(start, end), text.text)) {
6499                    if (text.text instanceof Spanned) {
6500                        // OK to copy spans only.
6501                        TextUtils.copySpansFrom((Spanned) text.text, start, end,
6502                                Object.class, content, start);
6503                    }
6504                } else {
6505                    content.replace(start, end, text.text);
6506                }
6507            }
6508        }
6509
6510        // Now set the selection position...  make sure it is in range, to
6511        // avoid crashes.  If this is a partial update, it is possible that
6512        // the underlying text may have changed, causing us problems here.
6513        // Also we just don't want to trust clients to do the right thing.
6514        Spannable sp = (Spannable)getText();
6515        final int N = sp.length();
6516        int start = text.selectionStart;
6517        if (start < 0) start = 0;
6518        else if (start > N) start = N;
6519        int end = text.selectionEnd;
6520        if (end < 0) end = 0;
6521        else if (end > N) end = N;
6522        Selection.setSelection(sp, start, end);
6523
6524        // Finally, update the selection mode.
6525        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
6526            MetaKeyKeyListener.startSelecting(this, sp);
6527        } else {
6528            MetaKeyKeyListener.stopSelecting(this, sp);
6529        }
6530    }
6531
6532    /**
6533     * @hide
6534     */
6535    public void setExtracting(ExtractedTextRequest req) {
6536        if (mEditor.mInputMethodState != null) {
6537            mEditor.mInputMethodState.mExtractedTextRequest = req;
6538        }
6539        // This would stop a possible selection mode, but no such mode is started in case
6540        // extracted mode will start. Some text is selected though, and will trigger an action mode
6541        // in the extracted view.
6542        mEditor.hideCursorAndSpanControllers();
6543        stopTextActionMode();
6544    }
6545
6546    /**
6547     * Called by the framework in response to a text completion from
6548     * the current input method, provided by it calling
6549     * {@link InputConnection#commitCompletion
6550     * InputConnection.commitCompletion()}.  The default implementation does
6551     * nothing; text views that are supporting auto-completion should override
6552     * this to do their desired behavior.
6553     *
6554     * @param text The auto complete text the user has selected.
6555     */
6556    public void onCommitCompletion(CompletionInfo text) {
6557        // intentionally empty
6558    }
6559
6560    /**
6561     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
6562     * a dictionnary) from the current input method, provided by it calling
6563     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
6564     * implementation flashes the background of the corrected word to provide feedback to the user.
6565     *
6566     * @param info The auto correct info about the text that was corrected.
6567     */
6568    public void onCommitCorrection(CorrectionInfo info) {
6569        if (mEditor != null) mEditor.onCommitCorrection(info);
6570    }
6571
6572    public void beginBatchEdit() {
6573        if (mEditor != null) mEditor.beginBatchEdit();
6574    }
6575
6576    public void endBatchEdit() {
6577        if (mEditor != null) mEditor.endBatchEdit();
6578    }
6579
6580    /**
6581     * Called by the framework in response to a request to begin a batch
6582     * of edit operations through a call to link {@link #beginBatchEdit()}.
6583     */
6584    public void onBeginBatchEdit() {
6585        // intentionally empty
6586    }
6587
6588    /**
6589     * Called by the framework in response to a request to end a batch
6590     * of edit operations through a call to link {@link #endBatchEdit}.
6591     */
6592    public void onEndBatchEdit() {
6593        // intentionally empty
6594    }
6595
6596    /**
6597     * Called by the framework in response to a private command from the
6598     * current method, provided by it calling
6599     * {@link InputConnection#performPrivateCommand
6600     * InputConnection.performPrivateCommand()}.
6601     *
6602     * @param action The action name of the command.
6603     * @param data Any additional data for the command.  This may be null.
6604     * @return Return true if you handled the command, else false.
6605     */
6606    public boolean onPrivateIMECommand(String action, Bundle data) {
6607        return false;
6608    }
6609
6610    private void nullLayouts() {
6611        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
6612            mSavedLayout = (BoringLayout) mLayout;
6613        }
6614        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
6615            mSavedHintLayout = (BoringLayout) mHintLayout;
6616        }
6617
6618        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
6619
6620        mBoring = mHintBoring = null;
6621
6622        // Since it depends on the value of mLayout
6623        if (mEditor != null) mEditor.prepareCursorControllers();
6624    }
6625
6626    /**
6627     * Make a new Layout based on the already-measured size of the view,
6628     * on the assumption that it was measured correctly at some point.
6629     */
6630    private void assumeLayout() {
6631        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6632
6633        if (width < 1) {
6634            width = 0;
6635        }
6636
6637        int physicalWidth = width;
6638
6639        if (mHorizontallyScrolling) {
6640            width = VERY_WIDE;
6641        }
6642
6643        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
6644                      physicalWidth, false);
6645    }
6646
6647    private Layout.Alignment getLayoutAlignment() {
6648        Layout.Alignment alignment;
6649        switch (getTextAlignment()) {
6650            case TEXT_ALIGNMENT_GRAVITY:
6651                switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
6652                    case Gravity.START:
6653                        alignment = Layout.Alignment.ALIGN_NORMAL;
6654                        break;
6655                    case Gravity.END:
6656                        alignment = Layout.Alignment.ALIGN_OPPOSITE;
6657                        break;
6658                    case Gravity.LEFT:
6659                        alignment = Layout.Alignment.ALIGN_LEFT;
6660                        break;
6661                    case Gravity.RIGHT:
6662                        alignment = Layout.Alignment.ALIGN_RIGHT;
6663                        break;
6664                    case Gravity.CENTER_HORIZONTAL:
6665                        alignment = Layout.Alignment.ALIGN_CENTER;
6666                        break;
6667                    default:
6668                        alignment = Layout.Alignment.ALIGN_NORMAL;
6669                        break;
6670                }
6671                break;
6672            case TEXT_ALIGNMENT_TEXT_START:
6673                alignment = Layout.Alignment.ALIGN_NORMAL;
6674                break;
6675            case TEXT_ALIGNMENT_TEXT_END:
6676                alignment = Layout.Alignment.ALIGN_OPPOSITE;
6677                break;
6678            case TEXT_ALIGNMENT_CENTER:
6679                alignment = Layout.Alignment.ALIGN_CENTER;
6680                break;
6681            case TEXT_ALIGNMENT_VIEW_START:
6682                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6683                        Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
6684                break;
6685            case TEXT_ALIGNMENT_VIEW_END:
6686                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6687                        Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
6688                break;
6689            case TEXT_ALIGNMENT_INHERIT:
6690                // This should never happen as we have already resolved the text alignment
6691                // but better safe than sorry so we just fall through
6692            default:
6693                alignment = Layout.Alignment.ALIGN_NORMAL;
6694                break;
6695        }
6696        return alignment;
6697    }
6698
6699    /**
6700     * The width passed in is now the desired layout width,
6701     * not the full view width with padding.
6702     * {@hide}
6703     */
6704    protected void makeNewLayout(int wantWidth, int hintWidth,
6705                                 BoringLayout.Metrics boring,
6706                                 BoringLayout.Metrics hintBoring,
6707                                 int ellipsisWidth, boolean bringIntoView) {
6708        stopMarquee();
6709
6710        // Update "old" cached values
6711        mOldMaximum = mMaximum;
6712        mOldMaxMode = mMaxMode;
6713
6714        mHighlightPathBogus = true;
6715
6716        if (wantWidth < 0) {
6717            wantWidth = 0;
6718        }
6719        if (hintWidth < 0) {
6720            hintWidth = 0;
6721        }
6722
6723        Layout.Alignment alignment = getLayoutAlignment();
6724        final boolean testDirChange = mSingleLine && mLayout != null &&
6725            (alignment == Layout.Alignment.ALIGN_NORMAL ||
6726             alignment == Layout.Alignment.ALIGN_OPPOSITE);
6727        int oldDir = 0;
6728        if (testDirChange) oldDir = mLayout.getParagraphDirection(0);
6729        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
6730        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
6731                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
6732        TruncateAt effectiveEllipsize = mEllipsize;
6733        if (mEllipsize == TruncateAt.MARQUEE &&
6734                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6735            effectiveEllipsize = TruncateAt.END_SMALL;
6736        }
6737
6738        if (mTextDir == null) {
6739            mTextDir = getTextDirectionHeuristic();
6740        }
6741
6742        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
6743                effectiveEllipsize, effectiveEllipsize == mEllipsize);
6744        if (switchEllipsize) {
6745            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
6746                    TruncateAt.END : TruncateAt.MARQUEE;
6747            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
6748                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
6749        }
6750
6751        shouldEllipsize = mEllipsize != null;
6752        mHintLayout = null;
6753
6754        if (mHint != null) {
6755            if (shouldEllipsize) hintWidth = wantWidth;
6756
6757            if (hintBoring == UNKNOWN_BORING) {
6758                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
6759                                                   mHintBoring);
6760                if (hintBoring != null) {
6761                    mHintBoring = hintBoring;
6762                }
6763            }
6764
6765            if (hintBoring != null) {
6766                if (hintBoring.width <= hintWidth &&
6767                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
6768                    if (mSavedHintLayout != null) {
6769                        mHintLayout = mSavedHintLayout.
6770                                replaceOrMake(mHint, mTextPaint,
6771                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6772                                hintBoring, mIncludePad);
6773                    } else {
6774                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6775                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6776                                hintBoring, mIncludePad);
6777                    }
6778
6779                    mSavedHintLayout = (BoringLayout) mHintLayout;
6780                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
6781                    if (mSavedHintLayout != null) {
6782                        mHintLayout = mSavedHintLayout.
6783                                replaceOrMake(mHint, mTextPaint,
6784                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6785                                hintBoring, mIncludePad, mEllipsize,
6786                                ellipsisWidth);
6787                    } else {
6788                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6789                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6790                                hintBoring, mIncludePad, mEllipsize,
6791                                ellipsisWidth);
6792                    }
6793                }
6794            }
6795            // TODO: code duplication with makeSingleLayout()
6796            if (mHintLayout == null) {
6797                StaticLayout.Builder builder = StaticLayout.Builder.obtain(mHint, 0,
6798                        mHint.length(), mTextPaint, hintWidth)
6799                        .setAlignment(alignment)
6800                        .setTextDirection(mTextDir)
6801                        .setLineSpacing(mSpacingAdd, mSpacingMult)
6802                        .setIncludePad(mIncludePad)
6803                        .setBreakStrategy(mBreakStrategy)
6804                        .setHyphenationFrequency(mHyphenationFrequency);
6805                if (shouldEllipsize) {
6806                    builder.setEllipsize(mEllipsize)
6807                            .setEllipsizedWidth(ellipsisWidth)
6808                            .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6809                }
6810                mHintLayout = builder.build();
6811            }
6812        }
6813
6814        if (bringIntoView || (testDirChange && oldDir != mLayout.getParagraphDirection(0))) {
6815            registerForPreDraw();
6816        }
6817
6818        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6819            if (!compressText(ellipsisWidth)) {
6820                final int height = mLayoutParams.height;
6821                // If the size of the view does not depend on the size of the text, try to
6822                // start the marquee immediately
6823                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
6824                    startMarquee();
6825                } else {
6826                    // Defer the start of the marquee until we know our width (see setFrame())
6827                    mRestartMarquee = true;
6828                }
6829            }
6830        }
6831
6832        // CursorControllers need a non-null mLayout
6833        if (mEditor != null) mEditor.prepareCursorControllers();
6834    }
6835
6836    /**
6837     * @hide
6838     */
6839    protected Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
6840            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
6841            boolean useSaved) {
6842        Layout result = null;
6843        if (mText instanceof Spannable) {
6844            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
6845                    alignment, mTextDir, mSpacingMult, mSpacingAdd, mIncludePad,
6846                    mBreakStrategy, mHyphenationFrequency,
6847                    getKeyListener() == null ? effectiveEllipsize : null, ellipsisWidth);
6848        } else {
6849            if (boring == UNKNOWN_BORING) {
6850                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6851                if (boring != null) {
6852                    mBoring = boring;
6853                }
6854            }
6855
6856            if (boring != null) {
6857                if (boring.width <= wantWidth &&
6858                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
6859                    if (useSaved && mSavedLayout != null) {
6860                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6861                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6862                                boring, mIncludePad);
6863                    } else {
6864                        result = BoringLayout.make(mTransformed, mTextPaint,
6865                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6866                                boring, mIncludePad);
6867                    }
6868
6869                    if (useSaved) {
6870                        mSavedLayout = (BoringLayout) result;
6871                    }
6872                } else if (shouldEllipsize && boring.width <= wantWidth) {
6873                    if (useSaved && mSavedLayout != null) {
6874                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6875                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6876                                boring, mIncludePad, effectiveEllipsize,
6877                                ellipsisWidth);
6878                    } else {
6879                        result = BoringLayout.make(mTransformed, mTextPaint,
6880                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6881                                boring, mIncludePad, effectiveEllipsize,
6882                                ellipsisWidth);
6883                    }
6884                }
6885            }
6886        }
6887        if (result == null) {
6888            StaticLayout.Builder builder = StaticLayout.Builder.obtain(mTransformed,
6889                    0, mTransformed.length(), mTextPaint, wantWidth)
6890                    .setAlignment(alignment)
6891                    .setTextDirection(mTextDir)
6892                    .setLineSpacing(mSpacingAdd, mSpacingMult)
6893                    .setIncludePad(mIncludePad)
6894                    .setBreakStrategy(mBreakStrategy)
6895                    .setHyphenationFrequency(mHyphenationFrequency);
6896            if (shouldEllipsize) {
6897                builder.setEllipsize(effectiveEllipsize)
6898                        .setEllipsizedWidth(ellipsisWidth)
6899                        .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6900            }
6901            // TODO: explore always setting maxLines
6902            result = builder.build();
6903        }
6904        return result;
6905    }
6906
6907    private boolean compressText(float width) {
6908        if (isHardwareAccelerated()) return false;
6909
6910        // Only compress the text if it hasn't been compressed by the previous pass
6911        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
6912                mTextPaint.getTextScaleX() == 1.0f) {
6913            final float textWidth = mLayout.getLineWidth(0);
6914            final float overflow = (textWidth + 1.0f - width) / width;
6915            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
6916                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
6917                post(new Runnable() {
6918                    public void run() {
6919                        requestLayout();
6920                    }
6921                });
6922                return true;
6923            }
6924        }
6925
6926        return false;
6927    }
6928
6929    private static int desired(Layout layout) {
6930        int n = layout.getLineCount();
6931        CharSequence text = layout.getText();
6932        float max = 0;
6933
6934        // if any line was wrapped, we can't use it.
6935        // but it's ok for the last line not to have a newline
6936
6937        for (int i = 0; i < n - 1; i++) {
6938            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
6939                return -1;
6940        }
6941
6942        for (int i = 0; i < n; i++) {
6943            max = Math.max(max, layout.getLineWidth(i));
6944        }
6945
6946        return (int) Math.ceil(max);
6947    }
6948
6949    /**
6950     * Set whether the TextView includes extra top and bottom padding to make
6951     * room for accents that go above the normal ascent and descent.
6952     * The default is true.
6953     *
6954     * @see #getIncludeFontPadding()
6955     *
6956     * @attr ref android.R.styleable#TextView_includeFontPadding
6957     */
6958    public void setIncludeFontPadding(boolean includepad) {
6959        if (mIncludePad != includepad) {
6960            mIncludePad = includepad;
6961
6962            if (mLayout != null) {
6963                nullLayouts();
6964                requestLayout();
6965                invalidate();
6966            }
6967        }
6968    }
6969
6970    /**
6971     * Gets whether the TextView includes extra top and bottom padding to make
6972     * room for accents that go above the normal ascent and descent.
6973     *
6974     * @see #setIncludeFontPadding(boolean)
6975     *
6976     * @attr ref android.R.styleable#TextView_includeFontPadding
6977     */
6978    public boolean getIncludeFontPadding() {
6979        return mIncludePad;
6980    }
6981
6982    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
6983
6984    @Override
6985    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
6986        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
6987        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
6988        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
6989        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
6990
6991        int width;
6992        int height;
6993
6994        BoringLayout.Metrics boring = UNKNOWN_BORING;
6995        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
6996
6997        if (mTextDir == null) {
6998            mTextDir = getTextDirectionHeuristic();
6999        }
7000
7001        int des = -1;
7002        boolean fromexisting = false;
7003
7004        if (widthMode == MeasureSpec.EXACTLY) {
7005            // Parent has told us how big to be. So be it.
7006            width = widthSize;
7007        } else {
7008            if (mLayout != null && mEllipsize == null) {
7009                des = desired(mLayout);
7010            }
7011
7012            if (des < 0) {
7013                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
7014                if (boring != null) {
7015                    mBoring = boring;
7016                }
7017            } else {
7018                fromexisting = true;
7019            }
7020
7021            if (boring == null || boring == UNKNOWN_BORING) {
7022                if (des < 0) {
7023                    des = (int) Math.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
7024                }
7025                width = des;
7026            } else {
7027                width = boring.width;
7028            }
7029
7030            final Drawables dr = mDrawables;
7031            if (dr != null) {
7032                width = Math.max(width, dr.mDrawableWidthTop);
7033                width = Math.max(width, dr.mDrawableWidthBottom);
7034            }
7035
7036            if (mHint != null) {
7037                int hintDes = -1;
7038                int hintWidth;
7039
7040                if (mHintLayout != null && mEllipsize == null) {
7041                    hintDes = desired(mHintLayout);
7042                }
7043
7044                if (hintDes < 0) {
7045                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
7046                    if (hintBoring != null) {
7047                        mHintBoring = hintBoring;
7048                    }
7049                }
7050
7051                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
7052                    if (hintDes < 0) {
7053                        hintDes = (int) Math.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
7054                    }
7055                    hintWidth = hintDes;
7056                } else {
7057                    hintWidth = hintBoring.width;
7058                }
7059
7060                if (hintWidth > width) {
7061                    width = hintWidth;
7062                }
7063            }
7064
7065            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
7066
7067            if (mMaxWidthMode == EMS) {
7068                width = Math.min(width, mMaxWidth * getLineHeight());
7069            } else {
7070                width = Math.min(width, mMaxWidth);
7071            }
7072
7073            if (mMinWidthMode == EMS) {
7074                width = Math.max(width, mMinWidth * getLineHeight());
7075            } else {
7076                width = Math.max(width, mMinWidth);
7077            }
7078
7079            // Check against our minimum width
7080            width = Math.max(width, getSuggestedMinimumWidth());
7081
7082            if (widthMode == MeasureSpec.AT_MOST) {
7083                width = Math.min(widthSize, width);
7084            }
7085        }
7086
7087        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
7088        int unpaddedWidth = want;
7089
7090        if (mHorizontallyScrolling) want = VERY_WIDE;
7091
7092        int hintWant = want;
7093        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
7094
7095        if (mLayout == null) {
7096            makeNewLayout(want, hintWant, boring, hintBoring,
7097                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7098        } else {
7099            final boolean layoutChanged = (mLayout.getWidth() != want) ||
7100                    (hintWidth != hintWant) ||
7101                    (mLayout.getEllipsizedWidth() !=
7102                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
7103
7104            final boolean widthChanged = (mHint == null) &&
7105                    (mEllipsize == null) &&
7106                    (want > mLayout.getWidth()) &&
7107                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
7108
7109            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
7110
7111            if (layoutChanged || maximumChanged) {
7112                if (!maximumChanged && widthChanged) {
7113                    mLayout.increaseWidthTo(want);
7114                } else {
7115                    makeNewLayout(want, hintWant, boring, hintBoring,
7116                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7117                }
7118            } else {
7119                // Nothing has changed
7120            }
7121        }
7122
7123        if (heightMode == MeasureSpec.EXACTLY) {
7124            // Parent has told us how big to be. So be it.
7125            height = heightSize;
7126            mDesiredHeightAtMeasure = -1;
7127        } else {
7128            int desired = getDesiredHeight();
7129
7130            height = desired;
7131            mDesiredHeightAtMeasure = desired;
7132
7133            if (heightMode == MeasureSpec.AT_MOST) {
7134                height = Math.min(desired, heightSize);
7135            }
7136        }
7137
7138        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
7139        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
7140            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
7141        }
7142
7143        /*
7144         * We didn't let makeNewLayout() register to bring the cursor into view,
7145         * so do it here if there is any possibility that it is needed.
7146         */
7147        if (mMovement != null ||
7148            mLayout.getWidth() > unpaddedWidth ||
7149            mLayout.getHeight() > unpaddedHeight) {
7150            registerForPreDraw();
7151        } else {
7152            scrollTo(0, 0);
7153        }
7154
7155        setMeasuredDimension(width, height);
7156    }
7157
7158    private int getDesiredHeight() {
7159        return Math.max(
7160                getDesiredHeight(mLayout, true),
7161                getDesiredHeight(mHintLayout, mEllipsize != null));
7162    }
7163
7164    private int getDesiredHeight(Layout layout, boolean cap) {
7165        if (layout == null) {
7166            return 0;
7167        }
7168
7169        int linecount = layout.getLineCount();
7170        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
7171        int desired = layout.getLineTop(linecount);
7172
7173        final Drawables dr = mDrawables;
7174        if (dr != null) {
7175            desired = Math.max(desired, dr.mDrawableHeightLeft);
7176            desired = Math.max(desired, dr.mDrawableHeightRight);
7177        }
7178
7179        desired += pad;
7180
7181        if (mMaxMode == LINES) {
7182            /*
7183             * Don't cap the hint to a certain number of lines.
7184             * (Do cap it, though, if we have a maximum pixel height.)
7185             */
7186            if (cap) {
7187                if (linecount > mMaximum) {
7188                    desired = layout.getLineTop(mMaximum);
7189
7190                    if (dr != null) {
7191                        desired = Math.max(desired, dr.mDrawableHeightLeft);
7192                        desired = Math.max(desired, dr.mDrawableHeightRight);
7193                    }
7194
7195                    desired += pad;
7196                    linecount = mMaximum;
7197                }
7198            }
7199        } else {
7200            desired = Math.min(desired, mMaximum);
7201        }
7202
7203        if (mMinMode == LINES) {
7204            if (linecount < mMinimum) {
7205                desired += getLineHeight() * (mMinimum - linecount);
7206            }
7207        } else {
7208            desired = Math.max(desired, mMinimum);
7209        }
7210
7211        // Check against our minimum height
7212        desired = Math.max(desired, getSuggestedMinimumHeight());
7213
7214        return desired;
7215    }
7216
7217    /**
7218     * Check whether a change to the existing text layout requires a
7219     * new view layout.
7220     */
7221    private void checkForResize() {
7222        boolean sizeChanged = false;
7223
7224        if (mLayout != null) {
7225            // Check if our width changed
7226            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
7227                sizeChanged = true;
7228                invalidate();
7229            }
7230
7231            // Check if our height changed
7232            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
7233                int desiredHeight = getDesiredHeight();
7234
7235                if (desiredHeight != this.getHeight()) {
7236                    sizeChanged = true;
7237                }
7238            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
7239                if (mDesiredHeightAtMeasure >= 0) {
7240                    int desiredHeight = getDesiredHeight();
7241
7242                    if (desiredHeight != mDesiredHeightAtMeasure) {
7243                        sizeChanged = true;
7244                    }
7245                }
7246            }
7247        }
7248
7249        if (sizeChanged) {
7250            requestLayout();
7251            // caller will have already invalidated
7252        }
7253    }
7254
7255    /**
7256     * Check whether entirely new text requires a new view layout
7257     * or merely a new text layout.
7258     */
7259    private void checkForRelayout() {
7260        // If we have a fixed width, we can just swap in a new text layout
7261        // if the text height stays the same or if the view height is fixed.
7262
7263        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
7264                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
7265                (mHint == null || mHintLayout != null) &&
7266                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
7267            // Static width, so try making a new text layout.
7268
7269            int oldht = mLayout.getHeight();
7270            int want = mLayout.getWidth();
7271            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
7272
7273            /*
7274             * No need to bring the text into view, since the size is not
7275             * changing (unless we do the requestLayout(), in which case it
7276             * will happen at measure).
7277             */
7278            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
7279                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
7280                          false);
7281
7282            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
7283                // In a fixed-height view, so use our new text layout.
7284                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
7285                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
7286                    invalidate();
7287                    return;
7288                }
7289
7290                // Dynamic height, but height has stayed the same,
7291                // so use our new text layout.
7292                if (mLayout.getHeight() == oldht &&
7293                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
7294                    invalidate();
7295                    return;
7296                }
7297            }
7298
7299            // We lose: the height has changed and we have a dynamic height.
7300            // Request a new view layout using our new text layout.
7301            requestLayout();
7302            invalidate();
7303        } else {
7304            // Dynamic width, so we have no choice but to request a new
7305            // view layout with a new text layout.
7306            nullLayouts();
7307            requestLayout();
7308            invalidate();
7309        }
7310    }
7311
7312    @Override
7313    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
7314        super.onLayout(changed, left, top, right, bottom);
7315        if (mDeferScroll >= 0) {
7316            int curs = mDeferScroll;
7317            mDeferScroll = -1;
7318            bringPointIntoView(Math.min(curs, mText.length()));
7319        }
7320    }
7321
7322    private boolean isShowingHint() {
7323        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
7324    }
7325
7326    /**
7327     * Returns true if anything changed.
7328     */
7329    private boolean bringTextIntoView() {
7330        Layout layout = isShowingHint() ? mHintLayout : mLayout;
7331        int line = 0;
7332        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7333            line = layout.getLineCount() - 1;
7334        }
7335
7336        Layout.Alignment a = layout.getParagraphAlignment(line);
7337        int dir = layout.getParagraphDirection(line);
7338        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7339        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7340        int ht = layout.getHeight();
7341
7342        int scrollx, scrolly;
7343
7344        // Convert to left, center, or right alignment.
7345        if (a == Layout.Alignment.ALIGN_NORMAL) {
7346            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
7347                Layout.Alignment.ALIGN_RIGHT;
7348        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
7349            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
7350                Layout.Alignment.ALIGN_LEFT;
7351        }
7352
7353        if (a == Layout.Alignment.ALIGN_CENTER) {
7354            /*
7355             * Keep centered if possible, or, if it is too wide to fit,
7356             * keep leading edge in view.
7357             */
7358
7359            int left = (int) Math.floor(layout.getLineLeft(line));
7360            int right = (int) Math.ceil(layout.getLineRight(line));
7361
7362            if (right - left < hspace) {
7363                scrollx = (right + left) / 2 - hspace / 2;
7364            } else {
7365                if (dir < 0) {
7366                    scrollx = right - hspace;
7367                } else {
7368                    scrollx = left;
7369                }
7370            }
7371        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
7372            int right = (int) Math.ceil(layout.getLineRight(line));
7373            scrollx = right - hspace;
7374        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
7375            scrollx = (int) Math.floor(layout.getLineLeft(line));
7376        }
7377
7378        if (ht < vspace) {
7379            scrolly = 0;
7380        } else {
7381            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7382                scrolly = ht - vspace;
7383            } else {
7384                scrolly = 0;
7385            }
7386        }
7387
7388        if (scrollx != mScrollX || scrolly != mScrollY) {
7389            scrollTo(scrollx, scrolly);
7390            return true;
7391        } else {
7392            return false;
7393        }
7394    }
7395
7396    /**
7397     * Move the point, specified by the offset, into the view if it is needed.
7398     * This has to be called after layout. Returns true if anything changed.
7399     */
7400    public boolean bringPointIntoView(int offset) {
7401        if (isLayoutRequested()) {
7402            mDeferScroll = offset;
7403            return false;
7404        }
7405        boolean changed = false;
7406
7407        Layout layout = isShowingHint() ? mHintLayout: mLayout;
7408
7409        if (layout == null) return changed;
7410
7411        int line = layout.getLineForOffset(offset);
7412
7413        int grav;
7414
7415        switch (layout.getParagraphAlignment(line)) {
7416            case ALIGN_LEFT:
7417                grav = 1;
7418                break;
7419            case ALIGN_RIGHT:
7420                grav = -1;
7421                break;
7422            case ALIGN_NORMAL:
7423                grav = layout.getParagraphDirection(line);
7424                break;
7425            case ALIGN_OPPOSITE:
7426                grav = -layout.getParagraphDirection(line);
7427                break;
7428            case ALIGN_CENTER:
7429            default:
7430                grav = 0;
7431                break;
7432        }
7433
7434        // We only want to clamp the cursor to fit within the layout width
7435        // in left-to-right modes, because in a right to left alignment,
7436        // we want to scroll to keep the line-right on the screen, as other
7437        // lines are likely to have text flush with the right margin, which
7438        // we want to keep visible.
7439        // A better long-term solution would probably be to measure both
7440        // the full line and a blank-trimmed version, and, for example, use
7441        // the latter measurement for centering and right alignment, but for
7442        // the time being we only implement the cursor clamping in left to
7443        // right where it is most likely to be annoying.
7444        final boolean clamped = grav > 0;
7445        // FIXME: Is it okay to truncate this, or should we round?
7446        final int x = (int)layout.getPrimaryHorizontal(offset, clamped);
7447        final int top = layout.getLineTop(line);
7448        final int bottom = layout.getLineTop(line + 1);
7449
7450        int left = (int) Math.floor(layout.getLineLeft(line));
7451        int right = (int) Math.ceil(layout.getLineRight(line));
7452        int ht = layout.getHeight();
7453
7454        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7455        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7456        if (!mHorizontallyScrolling && right - left > hspace && right > x) {
7457            // If cursor has been clamped, make sure we don't scroll.
7458            right = Math.max(x, left + hspace);
7459        }
7460
7461        int hslack = (bottom - top) / 2;
7462        int vslack = hslack;
7463
7464        if (vslack > vspace / 4)
7465            vslack = vspace / 4;
7466        if (hslack > hspace / 4)
7467            hslack = hspace / 4;
7468
7469        int hs = mScrollX;
7470        int vs = mScrollY;
7471
7472        if (top - vs < vslack)
7473            vs = top - vslack;
7474        if (bottom - vs > vspace - vslack)
7475            vs = bottom - (vspace - vslack);
7476        if (ht - vs < vspace)
7477            vs = ht - vspace;
7478        if (0 - vs > 0)
7479            vs = 0;
7480
7481        if (grav != 0) {
7482            if (x - hs < hslack) {
7483                hs = x - hslack;
7484            }
7485            if (x - hs > hspace - hslack) {
7486                hs = x - (hspace - hslack);
7487            }
7488        }
7489
7490        if (grav < 0) {
7491            if (left - hs > 0)
7492                hs = left;
7493            if (right - hs < hspace)
7494                hs = right - hspace;
7495        } else if (grav > 0) {
7496            if (right - hs < hspace)
7497                hs = right - hspace;
7498            if (left - hs > 0)
7499                hs = left;
7500        } else /* grav == 0 */ {
7501            if (right - left <= hspace) {
7502                /*
7503                 * If the entire text fits, center it exactly.
7504                 */
7505                hs = left - (hspace - (right - left)) / 2;
7506            } else if (x > right - hslack) {
7507                /*
7508                 * If we are near the right edge, keep the right edge
7509                 * at the edge of the view.
7510                 */
7511                hs = right - hspace;
7512            } else if (x < left + hslack) {
7513                /*
7514                 * If we are near the left edge, keep the left edge
7515                 * at the edge of the view.
7516                 */
7517                hs = left;
7518            } else if (left > hs) {
7519                /*
7520                 * Is there whitespace visible at the left?  Fix it if so.
7521                 */
7522                hs = left;
7523            } else if (right < hs + hspace) {
7524                /*
7525                 * Is there whitespace visible at the right?  Fix it if so.
7526                 */
7527                hs = right - hspace;
7528            } else {
7529                /*
7530                 * Otherwise, float as needed.
7531                 */
7532                if (x - hs < hslack) {
7533                    hs = x - hslack;
7534                }
7535                if (x - hs > hspace - hslack) {
7536                    hs = x - (hspace - hslack);
7537                }
7538            }
7539        }
7540
7541        if (hs != mScrollX || vs != mScrollY) {
7542            if (mScroller == null) {
7543                scrollTo(hs, vs);
7544            } else {
7545                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
7546                int dx = hs - mScrollX;
7547                int dy = vs - mScrollY;
7548
7549                if (duration > ANIMATED_SCROLL_GAP) {
7550                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
7551                    awakenScrollBars(mScroller.getDuration());
7552                    invalidate();
7553                } else {
7554                    if (!mScroller.isFinished()) {
7555                        mScroller.abortAnimation();
7556                    }
7557
7558                    scrollBy(dx, dy);
7559                }
7560
7561                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
7562            }
7563
7564            changed = true;
7565        }
7566
7567        if (isFocused()) {
7568            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
7569            // requestRectangleOnScreen() is in terms of content coordinates.
7570
7571            // The offsets here are to ensure the rectangle we are using is
7572            // within our view bounds, in case the cursor is on the far left
7573            // or right.  If it isn't withing the bounds, then this request
7574            // will be ignored.
7575            if (mTempRect == null) mTempRect = new Rect();
7576            mTempRect.set(x - 2, top, x + 2, bottom);
7577            getInterestingRect(mTempRect, line);
7578            mTempRect.offset(mScrollX, mScrollY);
7579
7580            if (requestRectangleOnScreen(mTempRect)) {
7581                changed = true;
7582            }
7583        }
7584
7585        return changed;
7586    }
7587
7588    /**
7589     * Move the cursor, if needed, so that it is at an offset that is visible
7590     * to the user.  This will not move the cursor if it represents more than
7591     * one character (a selection range).  This will only work if the
7592     * TextView contains spannable text; otherwise it will do nothing.
7593     *
7594     * @return True if the cursor was actually moved, false otherwise.
7595     */
7596    public boolean moveCursorToVisibleOffset() {
7597        if (!(mText instanceof Spannable)) {
7598            return false;
7599        }
7600        int start = getSelectionStart();
7601        int end = getSelectionEnd();
7602        if (start != end) {
7603            return false;
7604        }
7605
7606        // First: make sure the line is visible on screen:
7607
7608        int line = mLayout.getLineForOffset(start);
7609
7610        final int top = mLayout.getLineTop(line);
7611        final int bottom = mLayout.getLineTop(line + 1);
7612        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7613        int vslack = (bottom - top) / 2;
7614        if (vslack > vspace / 4)
7615            vslack = vspace / 4;
7616        final int vs = mScrollY;
7617
7618        if (top < (vs+vslack)) {
7619            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
7620        } else if (bottom > (vspace+vs-vslack)) {
7621            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
7622        }
7623
7624        // Next: make sure the character is visible on screen:
7625
7626        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7627        final int hs = mScrollX;
7628        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
7629        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
7630
7631        // line might contain bidirectional text
7632        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
7633        final int highChar = leftChar > rightChar ? leftChar : rightChar;
7634
7635        int newStart = start;
7636        if (newStart < lowChar) {
7637            newStart = lowChar;
7638        } else if (newStart > highChar) {
7639            newStart = highChar;
7640        }
7641
7642        if (newStart != start) {
7643            Selection.setSelection((Spannable)mText, newStart);
7644            return true;
7645        }
7646
7647        return false;
7648    }
7649
7650    @Override
7651    public void computeScroll() {
7652        if (mScroller != null) {
7653            if (mScroller.computeScrollOffset()) {
7654                mScrollX = mScroller.getCurrX();
7655                mScrollY = mScroller.getCurrY();
7656                invalidateParentCaches();
7657                postInvalidate();  // So we draw again
7658            }
7659        }
7660    }
7661
7662    private void getInterestingRect(Rect r, int line) {
7663        convertFromViewportToContentCoordinates(r);
7664
7665        // Rectangle can can be expanded on first and last line to take
7666        // padding into account.
7667        // TODO Take left/right padding into account too?
7668        if (line == 0) r.top -= getExtendedPaddingTop();
7669        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
7670    }
7671
7672    private void convertFromViewportToContentCoordinates(Rect r) {
7673        final int horizontalOffset = viewportToContentHorizontalOffset();
7674        r.left += horizontalOffset;
7675        r.right += horizontalOffset;
7676
7677        final int verticalOffset = viewportToContentVerticalOffset();
7678        r.top += verticalOffset;
7679        r.bottom += verticalOffset;
7680    }
7681
7682    int viewportToContentHorizontalOffset() {
7683        return getCompoundPaddingLeft() - mScrollX;
7684    }
7685
7686    int viewportToContentVerticalOffset() {
7687        int offset = getExtendedPaddingTop() - mScrollY;
7688        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
7689            offset += getVerticalOffset(false);
7690        }
7691        return offset;
7692    }
7693
7694    @Override
7695    public void debug(int depth) {
7696        super.debug(depth);
7697
7698        String output = debugIndent(depth);
7699        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
7700                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
7701                + "} ";
7702
7703        if (mText != null) {
7704
7705            output += "mText=\"" + mText + "\" ";
7706            if (mLayout != null) {
7707                output += "mLayout width=" + mLayout.getWidth()
7708                        + " height=" + mLayout.getHeight();
7709            }
7710        } else {
7711            output += "mText=NULL";
7712        }
7713        Log.d(VIEW_LOG_TAG, output);
7714    }
7715
7716    /**
7717     * Convenience for {@link Selection#getSelectionStart}.
7718     */
7719    @ViewDebug.ExportedProperty(category = "text")
7720    public int getSelectionStart() {
7721        return Selection.getSelectionStart(getText());
7722    }
7723
7724    /**
7725     * Convenience for {@link Selection#getSelectionEnd}.
7726     */
7727    @ViewDebug.ExportedProperty(category = "text")
7728    public int getSelectionEnd() {
7729        return Selection.getSelectionEnd(getText());
7730    }
7731
7732    /**
7733     * Return true iff there is a selection inside this text view.
7734     */
7735    public boolean hasSelection() {
7736        final int selectionStart = getSelectionStart();
7737        final int selectionEnd = getSelectionEnd();
7738
7739        return selectionStart >= 0 && selectionStart != selectionEnd;
7740    }
7741
7742    String getSelectedText() {
7743        if (!hasSelection()) {
7744            return null;
7745        }
7746
7747        final int start = getSelectionStart();
7748        final int end = getSelectionEnd();
7749        return String.valueOf(
7750                start > end ? mText.subSequence(end, start) : mText.subSequence(start, end));
7751    }
7752
7753    /**
7754     * Sets the properties of this field (lines, horizontally scrolling,
7755     * transformation method) to be for a single-line input.
7756     *
7757     * @attr ref android.R.styleable#TextView_singleLine
7758     */
7759    public void setSingleLine() {
7760        setSingleLine(true);
7761    }
7762
7763    /**
7764     * Sets the properties of this field to transform input to ALL CAPS
7765     * display. This may use a "small caps" formatting if available.
7766     * This setting will be ignored if this field is editable or selectable.
7767     *
7768     * This call replaces the current transformation method. Disabling this
7769     * will not necessarily restore the previous behavior from before this
7770     * was enabled.
7771     *
7772     * @see #setTransformationMethod(TransformationMethod)
7773     * @attr ref android.R.styleable#TextView_textAllCaps
7774     */
7775    public void setAllCaps(boolean allCaps) {
7776        if (allCaps) {
7777            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
7778        } else {
7779            setTransformationMethod(null);
7780        }
7781    }
7782
7783    /**
7784     * If true, sets the properties of this field (number of lines, horizontally scrolling,
7785     * transformation method) to be for a single-line input; if false, restores these to the default
7786     * conditions.
7787     *
7788     * Note that the default conditions are not necessarily those that were in effect prior this
7789     * method, and you may want to reset these properties to your custom values.
7790     *
7791     * @attr ref android.R.styleable#TextView_singleLine
7792     */
7793    @android.view.RemotableViewMethod
7794    public void setSingleLine(boolean singleLine) {
7795        // Could be used, but may break backward compatibility.
7796        // if (mSingleLine == singleLine) return;
7797        setInputTypeSingleLine(singleLine);
7798        applySingleLine(singleLine, true, true);
7799    }
7800
7801    /**
7802     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
7803     * @param singleLine
7804     */
7805    private void setInputTypeSingleLine(boolean singleLine) {
7806        if (mEditor != null &&
7807                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
7808            if (singleLine) {
7809                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7810            } else {
7811                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7812            }
7813        }
7814    }
7815
7816    private void applySingleLine(boolean singleLine, boolean applyTransformation,
7817            boolean changeMaxLines) {
7818        mSingleLine = singleLine;
7819        if (singleLine) {
7820            setLines(1);
7821            setHorizontallyScrolling(true);
7822            if (applyTransformation) {
7823                setTransformationMethod(SingleLineTransformationMethod.getInstance());
7824            }
7825        } else {
7826            if (changeMaxLines) {
7827                setMaxLines(Integer.MAX_VALUE);
7828            }
7829            setHorizontallyScrolling(false);
7830            if (applyTransformation) {
7831                setTransformationMethod(null);
7832            }
7833        }
7834    }
7835
7836    /**
7837     * Causes words in the text that are longer than the view is wide
7838     * to be ellipsized instead of broken in the middle.  You may also
7839     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
7840     * to constrain the text to a single line.  Use <code>null</code>
7841     * to turn off ellipsizing.
7842     *
7843     * If {@link #setMaxLines} has been used to set two or more lines,
7844     * only {@link android.text.TextUtils.TruncateAt#END} and
7845     * {@link android.text.TextUtils.TruncateAt#MARQUEE} are supported
7846     * (other ellipsizing types will not do anything).
7847     *
7848     * @attr ref android.R.styleable#TextView_ellipsize
7849     */
7850    public void setEllipsize(TextUtils.TruncateAt where) {
7851        // TruncateAt is an enum. != comparison is ok between these singleton objects.
7852        if (mEllipsize != where) {
7853            mEllipsize = where;
7854
7855            if (mLayout != null) {
7856                nullLayouts();
7857                requestLayout();
7858                invalidate();
7859            }
7860        }
7861    }
7862
7863    /**
7864     * Sets how many times to repeat the marquee animation. Only applied if the
7865     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
7866     *
7867     * @see #getMarqueeRepeatLimit()
7868     *
7869     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7870     */
7871    public void setMarqueeRepeatLimit(int marqueeLimit) {
7872        mMarqueeRepeatLimit = marqueeLimit;
7873    }
7874
7875    /**
7876     * Gets the number of times the marquee animation is repeated. Only meaningful if the
7877     * TextView has marquee enabled.
7878     *
7879     * @return the number of times the marquee animation is repeated. -1 if the animation
7880     * repeats indefinitely
7881     *
7882     * @see #setMarqueeRepeatLimit(int)
7883     *
7884     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7885     */
7886    public int getMarqueeRepeatLimit() {
7887        return mMarqueeRepeatLimit;
7888    }
7889
7890    /**
7891     * Returns where, if anywhere, words that are longer than the view
7892     * is wide should be ellipsized.
7893     */
7894    @ViewDebug.ExportedProperty
7895    public TextUtils.TruncateAt getEllipsize() {
7896        return mEllipsize;
7897    }
7898
7899    /**
7900     * Set the TextView so that when it takes focus, all the text is
7901     * selected.
7902     *
7903     * @attr ref android.R.styleable#TextView_selectAllOnFocus
7904     */
7905    @android.view.RemotableViewMethod
7906    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
7907        createEditorIfNeeded();
7908        mEditor.mSelectAllOnFocus = selectAllOnFocus;
7909
7910        if (selectAllOnFocus && !(mText instanceof Spannable)) {
7911            setText(mText, BufferType.SPANNABLE);
7912        }
7913    }
7914
7915    /**
7916     * Set whether the cursor is visible. The default is true. Note that this property only
7917     * makes sense for editable TextView.
7918     *
7919     * @see #isCursorVisible()
7920     *
7921     * @attr ref android.R.styleable#TextView_cursorVisible
7922     */
7923    @android.view.RemotableViewMethod
7924    public void setCursorVisible(boolean visible) {
7925        if (visible && mEditor == null) return; // visible is the default value with no edit data
7926        createEditorIfNeeded();
7927        if (mEditor.mCursorVisible != visible) {
7928            mEditor.mCursorVisible = visible;
7929            invalidate();
7930
7931            mEditor.makeBlink();
7932
7933            // InsertionPointCursorController depends on mCursorVisible
7934            mEditor.prepareCursorControllers();
7935        }
7936    }
7937
7938    /**
7939     * @return whether or not the cursor is visible (assuming this TextView is editable)
7940     *
7941     * @see #setCursorVisible(boolean)
7942     *
7943     * @attr ref android.R.styleable#TextView_cursorVisible
7944     */
7945    public boolean isCursorVisible() {
7946        // true is the default value
7947        return mEditor == null ? true : mEditor.mCursorVisible;
7948    }
7949
7950    private boolean canMarquee() {
7951        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
7952        return width > 0 && (mLayout.getLineWidth(0) > width ||
7953                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
7954                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
7955    }
7956
7957    private void startMarquee() {
7958        // Do not ellipsize EditText
7959        if (getKeyListener() != null) return;
7960
7961        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
7962            return;
7963        }
7964
7965        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
7966                getLineCount() == 1 && canMarquee()) {
7967
7968            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7969                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
7970                final Layout tmp = mLayout;
7971                mLayout = mSavedMarqueeModeLayout;
7972                mSavedMarqueeModeLayout = tmp;
7973                setHorizontalFadingEdgeEnabled(true);
7974                requestLayout();
7975                invalidate();
7976            }
7977
7978            if (mMarquee == null) mMarquee = new Marquee(this);
7979            mMarquee.start(mMarqueeRepeatLimit);
7980        }
7981    }
7982
7983    private void stopMarquee() {
7984        if (mMarquee != null && !mMarquee.isStopped()) {
7985            mMarquee.stop();
7986        }
7987
7988        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
7989            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
7990            final Layout tmp = mSavedMarqueeModeLayout;
7991            mSavedMarqueeModeLayout = mLayout;
7992            mLayout = tmp;
7993            setHorizontalFadingEdgeEnabled(false);
7994            requestLayout();
7995            invalidate();
7996        }
7997    }
7998
7999    private void startStopMarquee(boolean start) {
8000        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8001            if (start) {
8002                startMarquee();
8003            } else {
8004                stopMarquee();
8005            }
8006        }
8007    }
8008
8009    /**
8010     * This method is called when the text is changed, in case any subclasses
8011     * would like to know.
8012     *
8013     * Within <code>text</code>, the <code>lengthAfter</code> characters
8014     * beginning at <code>start</code> have just replaced old text that had
8015     * length <code>lengthBefore</code>. It is an error to attempt to make
8016     * changes to <code>text</code> from this callback.
8017     *
8018     * @param text The text the TextView is displaying
8019     * @param start The offset of the start of the range of the text that was
8020     * modified
8021     * @param lengthBefore The length of the former text that has been replaced
8022     * @param lengthAfter The length of the replacement modified text
8023     */
8024    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
8025        // intentionally empty, template pattern method can be overridden by subclasses
8026    }
8027
8028    /**
8029     * This method is called when the selection has changed, in case any
8030     * subclasses would like to know.
8031     *
8032     * @param selStart The new selection start location.
8033     * @param selEnd The new selection end location.
8034     */
8035    protected void onSelectionChanged(int selStart, int selEnd) {
8036        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
8037    }
8038
8039    /**
8040     * Adds a TextWatcher to the list of those whose methods are called
8041     * whenever this TextView's text changes.
8042     * <p>
8043     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
8044     * not called after {@link #setText} calls.  Now, doing {@link #setText}
8045     * if there are any text changed listeners forces the buffer type to
8046     * Editable if it would not otherwise be and does call this method.
8047     */
8048    public void addTextChangedListener(TextWatcher watcher) {
8049        if (mListeners == null) {
8050            mListeners = new ArrayList<TextWatcher>();
8051        }
8052
8053        mListeners.add(watcher);
8054    }
8055
8056    /**
8057     * Removes the specified TextWatcher from the list of those whose
8058     * methods are called
8059     * whenever this TextView's text changes.
8060     */
8061    public void removeTextChangedListener(TextWatcher watcher) {
8062        if (mListeners != null) {
8063            int i = mListeners.indexOf(watcher);
8064
8065            if (i >= 0) {
8066                mListeners.remove(i);
8067            }
8068        }
8069    }
8070
8071    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
8072        if (mListeners != null) {
8073            final ArrayList<TextWatcher> list = mListeners;
8074            final int count = list.size();
8075            for (int i = 0; i < count; i++) {
8076                list.get(i).beforeTextChanged(text, start, before, after);
8077            }
8078        }
8079
8080        // The spans that are inside or intersect the modified region no longer make sense
8081        removeIntersectingNonAdjacentSpans(start, start + before, SpellCheckSpan.class);
8082        removeIntersectingNonAdjacentSpans(start, start + before, SuggestionSpan.class);
8083    }
8084
8085    // Removes all spans that are inside or actually overlap the start..end range
8086    private <T> void removeIntersectingNonAdjacentSpans(int start, int end, Class<T> type) {
8087        if (!(mText instanceof Editable)) return;
8088        Editable text = (Editable) mText;
8089
8090        T[] spans = text.getSpans(start, end, type);
8091        final int length = spans.length;
8092        for (int i = 0; i < length; i++) {
8093            final int spanStart = text.getSpanStart(spans[i]);
8094            final int spanEnd = text.getSpanEnd(spans[i]);
8095            if (spanEnd == start || spanStart == end) break;
8096            text.removeSpan(spans[i]);
8097        }
8098    }
8099
8100    void removeAdjacentSuggestionSpans(final int pos) {
8101        if (!(mText instanceof Editable)) return;
8102        final Editable text = (Editable) mText;
8103
8104        final SuggestionSpan[] spans = text.getSpans(pos, pos, SuggestionSpan.class);
8105        final int length = spans.length;
8106        for (int i = 0; i < length; i++) {
8107            final int spanStart = text.getSpanStart(spans[i]);
8108            final int spanEnd = text.getSpanEnd(spans[i]);
8109            if (spanEnd == pos || spanStart == pos) {
8110                if (SpellChecker.haveWordBoundariesChanged(text, pos, pos, spanStart, spanEnd)) {
8111                    text.removeSpan(spans[i]);
8112                }
8113            }
8114        }
8115    }
8116
8117    /**
8118     * Not private so it can be called from an inner class without going
8119     * through a thunk.
8120     */
8121    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
8122        if (mListeners != null) {
8123            final ArrayList<TextWatcher> list = mListeners;
8124            final int count = list.size();
8125            for (int i = 0; i < count; i++) {
8126                list.get(i).onTextChanged(text, start, before, after);
8127            }
8128        }
8129
8130        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
8131    }
8132
8133    /**
8134     * Not private so it can be called from an inner class without going
8135     * through a thunk.
8136     */
8137    void sendAfterTextChanged(Editable text) {
8138        if (mListeners != null) {
8139            final ArrayList<TextWatcher> list = mListeners;
8140            final int count = list.size();
8141            for (int i = 0; i < count; i++) {
8142                list.get(i).afterTextChanged(text);
8143            }
8144        }
8145        hideErrorIfUnchanged();
8146    }
8147
8148    void updateAfterEdit() {
8149        invalidate();
8150        int curs = getSelectionStart();
8151
8152        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
8153            registerForPreDraw();
8154        }
8155
8156        checkForResize();
8157
8158        if (curs >= 0) {
8159            mHighlightPathBogus = true;
8160            if (mEditor != null) mEditor.makeBlink();
8161            bringPointIntoView(curs);
8162        }
8163    }
8164
8165    /**
8166     * Not private so it can be called from an inner class without going
8167     * through a thunk.
8168     */
8169    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
8170        sLastCutCopyOrTextChangedTime = 0;
8171
8172        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8173        if (ims == null || ims.mBatchEditNesting == 0) {
8174            updateAfterEdit();
8175        }
8176        if (ims != null) {
8177            ims.mContentChanged = true;
8178            if (ims.mChangedStart < 0) {
8179                ims.mChangedStart = start;
8180                ims.mChangedEnd = start+before;
8181            } else {
8182                ims.mChangedStart = Math.min(ims.mChangedStart, start);
8183                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
8184            }
8185            ims.mChangedDelta += after-before;
8186        }
8187        resetErrorChangedFlag();
8188        sendOnTextChanged(buffer, start, before, after);
8189        onTextChanged(buffer, start, before, after);
8190    }
8191
8192    /**
8193     * Not private so it can be called from an inner class without going
8194     * through a thunk.
8195     */
8196    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
8197        // XXX Make the start and end move together if this ends up
8198        // spending too much time invalidating.
8199
8200        boolean selChanged = false;
8201        int newSelStart=-1, newSelEnd=-1;
8202
8203        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8204
8205        if (what == Selection.SELECTION_END) {
8206            selChanged = true;
8207            newSelEnd = newStart;
8208
8209            if (oldStart >= 0 || newStart >= 0) {
8210                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
8211                checkForResize();
8212                registerForPreDraw();
8213                if (mEditor != null) mEditor.makeBlink();
8214            }
8215        }
8216
8217        if (what == Selection.SELECTION_START) {
8218            selChanged = true;
8219            newSelStart = newStart;
8220
8221            if (oldStart >= 0 || newStart >= 0) {
8222                int end = Selection.getSelectionEnd(buf);
8223                invalidateCursor(end, oldStart, newStart);
8224            }
8225        }
8226
8227        if (selChanged) {
8228            mHighlightPathBogus = true;
8229            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
8230
8231            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
8232                if (newSelStart < 0) {
8233                    newSelStart = Selection.getSelectionStart(buf);
8234                }
8235                if (newSelEnd < 0) {
8236                    newSelEnd = Selection.getSelectionEnd(buf);
8237                }
8238                onSelectionChanged(newSelStart, newSelEnd);
8239            }
8240        }
8241
8242        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
8243                what instanceof CharacterStyle) {
8244            if (ims == null || ims.mBatchEditNesting == 0) {
8245                invalidate();
8246                mHighlightPathBogus = true;
8247                checkForResize();
8248            } else {
8249                ims.mContentChanged = true;
8250            }
8251            if (mEditor != null) {
8252                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
8253                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
8254            }
8255        }
8256
8257        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
8258            mHighlightPathBogus = true;
8259            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
8260                ims.mSelectionModeChanged = true;
8261            }
8262
8263            if (Selection.getSelectionStart(buf) >= 0) {
8264                if (ims == null || ims.mBatchEditNesting == 0) {
8265                    invalidateCursor();
8266                } else {
8267                    ims.mCursorChanged = true;
8268                }
8269            }
8270        }
8271
8272        if (what instanceof ParcelableSpan) {
8273            // If this is a span that can be sent to a remote process,
8274            // the current extract editor would be interested in it.
8275            if (ims != null && ims.mExtractedTextRequest != null) {
8276                if (ims.mBatchEditNesting != 0) {
8277                    if (oldStart >= 0) {
8278                        if (ims.mChangedStart > oldStart) {
8279                            ims.mChangedStart = oldStart;
8280                        }
8281                        if (ims.mChangedStart > oldEnd) {
8282                            ims.mChangedStart = oldEnd;
8283                        }
8284                    }
8285                    if (newStart >= 0) {
8286                        if (ims.mChangedStart > newStart) {
8287                            ims.mChangedStart = newStart;
8288                        }
8289                        if (ims.mChangedStart > newEnd) {
8290                            ims.mChangedStart = newEnd;
8291                        }
8292                    }
8293                } else {
8294                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
8295                            + oldStart + "-" + oldEnd + ","
8296                            + newStart + "-" + newEnd + " " + what);
8297                    ims.mContentChanged = true;
8298                }
8299            }
8300        }
8301
8302        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
8303                what instanceof SpellCheckSpan) {
8304            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
8305        }
8306    }
8307
8308    /**
8309     * @hide
8310     */
8311    @Override
8312    public void dispatchFinishTemporaryDetach() {
8313        mDispatchTemporaryDetach = true;
8314        super.dispatchFinishTemporaryDetach();
8315        mDispatchTemporaryDetach = false;
8316    }
8317
8318    @Override
8319    public void onStartTemporaryDetach() {
8320        super.onStartTemporaryDetach();
8321        // Only track when onStartTemporaryDetach() is called directly,
8322        // usually because this instance is an editable field in a list
8323        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
8324
8325        // Tell the editor that we are temporarily detached. It can use this to preserve
8326        // selection state as needed.
8327        if (mEditor != null) mEditor.mTemporaryDetach = true;
8328    }
8329
8330    @Override
8331    public void onFinishTemporaryDetach() {
8332        super.onFinishTemporaryDetach();
8333        // Only track when onStartTemporaryDetach() is called directly,
8334        // usually because this instance is an editable field in a list
8335        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
8336        if (mEditor != null) mEditor.mTemporaryDetach = false;
8337    }
8338
8339    @Override
8340    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
8341        if (mTemporaryDetach) {
8342            // If we are temporarily in the detach state, then do nothing.
8343            super.onFocusChanged(focused, direction, previouslyFocusedRect);
8344            return;
8345        }
8346
8347        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
8348
8349        if (focused) {
8350            if (mText instanceof Spannable) {
8351                Spannable sp = (Spannable) mText;
8352                MetaKeyKeyListener.resetMetaState(sp);
8353            }
8354        }
8355
8356        startStopMarquee(focused);
8357
8358        if (mTransformation != null) {
8359            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
8360        }
8361
8362        super.onFocusChanged(focused, direction, previouslyFocusedRect);
8363    }
8364
8365    @Override
8366    public void onWindowFocusChanged(boolean hasWindowFocus) {
8367        super.onWindowFocusChanged(hasWindowFocus);
8368
8369        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
8370
8371        startStopMarquee(hasWindowFocus);
8372    }
8373
8374    @Override
8375    protected void onVisibilityChanged(View changedView, int visibility) {
8376        super.onVisibilityChanged(changedView, visibility);
8377        if (mEditor != null && visibility != VISIBLE) {
8378            mEditor.hideCursorAndSpanControllers();
8379            stopTextActionMode();
8380        }
8381    }
8382
8383    /**
8384     * Use {@link BaseInputConnection#removeComposingSpans
8385     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
8386     * state from this text view.
8387     */
8388    public void clearComposingText() {
8389        if (mText instanceof Spannable) {
8390            BaseInputConnection.removeComposingSpans((Spannable)mText);
8391        }
8392    }
8393
8394    @Override
8395    public void setSelected(boolean selected) {
8396        boolean wasSelected = isSelected();
8397
8398        super.setSelected(selected);
8399
8400        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8401            if (selected) {
8402                startMarquee();
8403            } else {
8404                stopMarquee();
8405            }
8406        }
8407    }
8408
8409    @Override
8410    public boolean onTouchEvent(MotionEvent event) {
8411        final int action = event.getActionMasked();
8412        if (mEditor != null) {
8413            mEditor.onTouchEvent(event);
8414
8415            if (mEditor.mSelectionModifierCursorController != null &&
8416                    mEditor.mSelectionModifierCursorController.isDragAcceleratorActive()) {
8417                return true;
8418            }
8419        }
8420
8421        final boolean superResult = super.onTouchEvent(event);
8422
8423        /*
8424         * Don't handle the release after a long press, because it will move the selection away from
8425         * whatever the menu action was trying to affect. If the long press should have triggered an
8426         * insertion action mode, we can now actually show it.
8427         */
8428        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
8429            mEditor.mDiscardNextActionUp = false;
8430
8431            if (mEditor.mIsInsertionActionModeStartPending) {
8432                mEditor.startInsertionActionMode();
8433                mEditor.mIsInsertionActionModeStartPending = false;
8434            }
8435            return superResult;
8436        }
8437
8438        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
8439                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
8440
8441         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
8442                && mText instanceof Spannable && mLayout != null) {
8443            boolean handled = false;
8444
8445            if (mMovement != null) {
8446                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
8447            }
8448
8449            final boolean textIsSelectable = isTextSelectable();
8450            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
8451                // The LinkMovementMethod which should handle taps on links has not been installed
8452                // on non editable text that support text selection.
8453                // We reproduce its behavior here to open links for these.
8454                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
8455                        getSelectionEnd(), ClickableSpan.class);
8456
8457                if (links.length > 0) {
8458                    links[0].onClick(this);
8459                    handled = true;
8460                }
8461            }
8462
8463            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
8464                // Show the IME, except when selecting in read-only text.
8465                final InputMethodManager imm = InputMethodManager.peekInstance();
8466                viewClicked(imm);
8467                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
8468                    handled |= imm != null && imm.showSoftInput(this, 0);
8469                }
8470
8471                // The above condition ensures that the mEditor is not null
8472                mEditor.onTouchUpEvent(event);
8473
8474                handled = true;
8475            }
8476
8477            if (handled) {
8478                return true;
8479            }
8480        }
8481
8482        return superResult;
8483    }
8484
8485    @Override
8486    public boolean onGenericMotionEvent(MotionEvent event) {
8487        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8488            try {
8489                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
8490                    return true;
8491                }
8492            } catch (AbstractMethodError ex) {
8493                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
8494                // Ignore its absence in case third party applications implemented the
8495                // interface directly.
8496            }
8497        }
8498        return super.onGenericMotionEvent(event);
8499    }
8500
8501    @Override
8502    protected void onCreateContextMenu(ContextMenu menu) {
8503        if (mEditor != null) {
8504            mEditor.onCreateContextMenu(menu);
8505        }
8506    }
8507
8508    @Override
8509    public boolean showContextMenu() {
8510        if (mEditor != null) {
8511            mEditor.setContextMenuAnchor(Float.NaN, Float.NaN);
8512        }
8513        return super.showContextMenu();
8514    }
8515
8516    @Override
8517    public boolean showContextMenu(float x, float y) {
8518        if (mEditor != null) {
8519            mEditor.setContextMenuAnchor(x, y);
8520        }
8521        return super.showContextMenu(x, y);
8522    }
8523
8524    /**
8525     * @return True iff this TextView contains a text that can be edited, or if this is
8526     * a selectable TextView.
8527     */
8528    boolean isTextEditable() {
8529        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
8530    }
8531
8532    /**
8533     * Returns true, only while processing a touch gesture, if the initial
8534     * touch down event caused focus to move to the text view and as a result
8535     * its selection changed.  Only valid while processing the touch gesture
8536     * of interest, in an editable text view.
8537     */
8538    public boolean didTouchFocusSelect() {
8539        return mEditor != null && mEditor.mTouchFocusSelected;
8540    }
8541
8542    @Override
8543    public void cancelLongPress() {
8544        super.cancelLongPress();
8545        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
8546    }
8547
8548    @Override
8549    public boolean onTrackballEvent(MotionEvent event) {
8550        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8551            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
8552                return true;
8553            }
8554        }
8555
8556        return super.onTrackballEvent(event);
8557    }
8558
8559    public void setScroller(Scroller s) {
8560        mScroller = s;
8561    }
8562
8563    @Override
8564    protected float getLeftFadingEdgeStrength() {
8565        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8566                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8567            if (mMarquee != null && !mMarquee.isStopped()) {
8568                final Marquee marquee = mMarquee;
8569                if (marquee.shouldDrawLeftFade()) {
8570                    final float scroll = marquee.getScroll();
8571                    return scroll / getHorizontalFadingEdgeLength();
8572                } else {
8573                    return 0.0f;
8574                }
8575            } else if (getLineCount() == 1) {
8576                final int layoutDirection = getLayoutDirection();
8577                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8578                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8579                    case Gravity.LEFT:
8580                        return 0.0f;
8581                    case Gravity.RIGHT:
8582                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
8583                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8584                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8585                    case Gravity.CENTER_HORIZONTAL:
8586                    case Gravity.FILL_HORIZONTAL:
8587                        final int textDirection = mLayout.getParagraphDirection(0);
8588                        if (textDirection == Layout.DIR_LEFT_TO_RIGHT) {
8589                            return 0.0f;
8590                        } else {
8591                            return (mLayout.getLineRight(0) - (mRight - mLeft) -
8592                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8593                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8594                        }
8595                }
8596            }
8597        }
8598        return super.getLeftFadingEdgeStrength();
8599    }
8600
8601    @Override
8602    protected float getRightFadingEdgeStrength() {
8603        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8604                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8605            if (mMarquee != null && !mMarquee.isStopped()) {
8606                final Marquee marquee = mMarquee;
8607                final float maxFadeScroll = marquee.getMaxFadeScroll();
8608                final float scroll = marquee.getScroll();
8609                return (maxFadeScroll - scroll) / getHorizontalFadingEdgeLength();
8610            } else if (getLineCount() == 1) {
8611                final int layoutDirection = getLayoutDirection();
8612                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8613                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8614                    case Gravity.LEFT:
8615                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
8616                                getCompoundPaddingRight();
8617                        final float lineWidth = mLayout.getLineWidth(0);
8618                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
8619                    case Gravity.RIGHT:
8620                        return 0.0f;
8621                    case Gravity.CENTER_HORIZONTAL:
8622                    case Gravity.FILL_HORIZONTAL:
8623                        final int textDirection = mLayout.getParagraphDirection(0);
8624                        if (textDirection == Layout.DIR_RIGHT_TO_LEFT) {
8625                            return 0.0f;
8626                        } else {
8627                            return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
8628                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
8629                                getHorizontalFadingEdgeLength();
8630                        }
8631                }
8632            }
8633        }
8634        return super.getRightFadingEdgeStrength();
8635    }
8636
8637    @Override
8638    protected int computeHorizontalScrollRange() {
8639        if (mLayout != null) {
8640            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
8641                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
8642        }
8643
8644        return super.computeHorizontalScrollRange();
8645    }
8646
8647    @Override
8648    protected int computeVerticalScrollRange() {
8649        if (mLayout != null)
8650            return mLayout.getHeight();
8651
8652        return super.computeVerticalScrollRange();
8653    }
8654
8655    @Override
8656    protected int computeVerticalScrollExtent() {
8657        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
8658    }
8659
8660    @Override
8661    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
8662        super.findViewsWithText(outViews, searched, flags);
8663        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
8664                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
8665            String searchedLowerCase = searched.toString().toLowerCase();
8666            String textLowerCase = mText.toString().toLowerCase();
8667            if (textLowerCase.contains(searchedLowerCase)) {
8668                outViews.add(this);
8669            }
8670        }
8671    }
8672
8673    public enum BufferType {
8674        NORMAL, SPANNABLE, EDITABLE,
8675    }
8676
8677    /**
8678     * Returns the TextView_textColor attribute from the TypedArray, if set, or
8679     * the TextAppearance_textColor from the TextView_textAppearance attribute,
8680     * if TextView_textColor was not set directly.
8681     *
8682     * @removed
8683     */
8684    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
8685        if (attrs == null) {
8686            // Preserve behavior prior to removal of this API.
8687            throw new NullPointerException();
8688        }
8689
8690        // It's not safe to use this method from apps. The parameter 'attrs'
8691        // must have been obtained using the TextView filter array which is not
8692        // available to the SDK. As such, we grab a default TypedArray with the
8693        // right filter instead here.
8694        final TypedArray a = context.obtainStyledAttributes(R.styleable.TextView);
8695        ColorStateList colors = a.getColorStateList(R.styleable.TextView_textColor);
8696        if (colors == null) {
8697            final int ap = a.getResourceId(R.styleable.TextView_textAppearance, 0);
8698            if (ap != 0) {
8699                final TypedArray appearance = context.obtainStyledAttributes(
8700                        ap, R.styleable.TextAppearance);
8701                colors = appearance.getColorStateList(R.styleable.TextAppearance_textColor);
8702                appearance.recycle();
8703            }
8704        }
8705        a.recycle();
8706
8707        return colors;
8708    }
8709
8710    /**
8711     * Returns the default color from the TextView_textColor attribute from the
8712     * AttributeSet, if set, or the default color from the
8713     * TextAppearance_textColor from the TextView_textAppearance attribute, if
8714     * TextView_textColor was not set directly.
8715     *
8716     * @removed
8717     */
8718    public static int getTextColor(Context context, TypedArray attrs, int def) {
8719        final ColorStateList colors = getTextColors(context, attrs);
8720        if (colors == null) {
8721            return def;
8722        } else {
8723            return colors.getDefaultColor();
8724        }
8725    }
8726
8727    @Override
8728    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
8729        if (event.hasModifiers(KeyEvent.META_CTRL_ON)) {
8730            // Handle Ctrl-only shortcuts.
8731            switch (keyCode) {
8732            case KeyEvent.KEYCODE_A:
8733                if (canSelectText()) {
8734                    return onTextContextMenuItem(ID_SELECT_ALL);
8735                }
8736                break;
8737            case KeyEvent.KEYCODE_Z:
8738                if (canUndo()) {
8739                    return onTextContextMenuItem(ID_UNDO);
8740                }
8741                break;
8742            case KeyEvent.KEYCODE_X:
8743                if (canCut()) {
8744                    return onTextContextMenuItem(ID_CUT);
8745                }
8746                break;
8747            case KeyEvent.KEYCODE_C:
8748                if (canCopy()) {
8749                    return onTextContextMenuItem(ID_COPY);
8750                }
8751                break;
8752            case KeyEvent.KEYCODE_V:
8753                if (canPaste()) {
8754                    return onTextContextMenuItem(ID_PASTE);
8755                }
8756                break;
8757            }
8758        } else if (event.hasModifiers(KeyEvent.META_CTRL_ON | KeyEvent.META_SHIFT_ON)) {
8759            // Handle Ctrl-Shift shortcuts.
8760            switch (keyCode) {
8761                case KeyEvent.KEYCODE_Z:
8762                    if (canRedo()) {
8763                        return onTextContextMenuItem(ID_REDO);
8764                    }
8765                    break;
8766                case KeyEvent.KEYCODE_V:
8767                    if (canPaste()) {
8768                        return onTextContextMenuItem(ID_PASTE_AS_PLAIN_TEXT);
8769                    }
8770            }
8771        }
8772        return super.onKeyShortcut(keyCode, event);
8773    }
8774
8775    /**
8776     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
8777     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
8778     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
8779     * sufficient.
8780     */
8781    boolean canSelectText() {
8782        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
8783    }
8784
8785    /**
8786     * Test based on the <i>intrinsic</i> charateristics of the TextView.
8787     * The text must be spannable and the movement method must allow for arbitary selection.
8788     *
8789     * See also {@link #canSelectText()}.
8790     */
8791    boolean textCanBeSelected() {
8792        // prepareCursorController() relies on this method.
8793        // If you change this condition, make sure prepareCursorController is called anywhere
8794        // the value of this condition might be changed.
8795        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
8796        return isTextEditable() ||
8797                (isTextSelectable() && mText instanceof Spannable && isEnabled());
8798    }
8799
8800    private Locale getTextServicesLocale(boolean allowNullLocale) {
8801        // Start fetching the text services locale asynchronously.
8802        updateTextServicesLocaleAsync();
8803        // If !allowNullLocale and there is no cached text services locale, just return the default
8804        // locale.
8805        return (mCurrentSpellCheckerLocaleCache == null && !allowNullLocale) ? Locale.getDefault()
8806                : mCurrentSpellCheckerLocaleCache;
8807    }
8808
8809    /**
8810     * This is a temporary method. Future versions may support multi-locale text.
8811     * Caveat: This method may not return the latest text services locale, but this should be
8812     * acceptable and it's more important to make this method asynchronous.
8813     *
8814     * @return The locale that should be used for a word iterator
8815     * in this TextView, based on the current spell checker settings,
8816     * the current IME's locale, or the system default locale.
8817     * Please note that a word iterator in this TextView is different from another word iterator
8818     * used by SpellChecker.java of TextView. This method should be used for the former.
8819     * @hide
8820     */
8821    // TODO: Support multi-locale
8822    // TODO: Update the text services locale immediately after the keyboard locale is switched
8823    // by catching intent of keyboard switch event
8824    public Locale getTextServicesLocale() {
8825        return getTextServicesLocale(false /* allowNullLocale */);
8826    }
8827
8828    /**
8829     * @return true if this TextView is specialized for showing and interacting with the extracted
8830     * text in a full-screen input method.
8831     * @hide
8832     */
8833    public boolean isInExtractedMode() {
8834        return false;
8835    }
8836
8837    /**
8838     * This is a temporary method. Future versions may support multi-locale text.
8839     * Caveat: This method may not return the latest spell checker locale, but this should be
8840     * acceptable and it's more important to make this method asynchronous.
8841     *
8842     * @return The locale that should be used for a spell checker in this TextView,
8843     * based on the current spell checker settings, the current IME's locale, or the system default
8844     * locale.
8845     * @hide
8846     */
8847    public Locale getSpellCheckerLocale() {
8848        return getTextServicesLocale(true /* allowNullLocale */);
8849    }
8850
8851    private void updateTextServicesLocaleAsync() {
8852        // AsyncTask.execute() uses a serial executor which means we don't have
8853        // to lock around updateTextServicesLocaleLocked() to prevent it from
8854        // being executed n times in parallel.
8855        AsyncTask.execute(new Runnable() {
8856            @Override
8857            public void run() {
8858                updateTextServicesLocaleLocked();
8859            }
8860        });
8861    }
8862
8863    private void updateTextServicesLocaleLocked() {
8864        final TextServicesManager textServicesManager = (TextServicesManager)
8865                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
8866        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
8867        final Locale locale;
8868        if (subtype != null) {
8869            locale = subtype.getLocaleObject();
8870        } else {
8871            locale = null;
8872        }
8873        mCurrentSpellCheckerLocaleCache = locale;
8874    }
8875
8876    void onLocaleChanged() {
8877        // Will be re-created on demand in getWordIterator with the proper new locale
8878        mEditor.mWordIterator = null;
8879    }
8880
8881    /**
8882     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
8883     * Made available to achieve a consistent behavior.
8884     * @hide
8885     */
8886    public WordIterator getWordIterator() {
8887        if (mEditor != null) {
8888            return mEditor.getWordIterator();
8889        } else {
8890            return null;
8891        }
8892    }
8893
8894    /** @hide */
8895    @Override
8896    public void onPopulateAccessibilityEventInternal(AccessibilityEvent event) {
8897        super.onPopulateAccessibilityEventInternal(event);
8898
8899        final CharSequence text = getTextForAccessibility();
8900        if (!TextUtils.isEmpty(text)) {
8901            event.getText().add(text);
8902        }
8903    }
8904
8905    /**
8906     * @return true if the user has explicitly allowed accessibility services
8907     * to speak passwords.
8908     */
8909    private boolean shouldSpeakPasswordsForAccessibility() {
8910        return (Settings.Secure.getIntForUser(mContext.getContentResolver(),
8911                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0,
8912                UserHandle.USER_CURRENT_OR_SELF) == 1);
8913    }
8914
8915    @Override
8916    public CharSequence getAccessibilityClassName() {
8917        return TextView.class.getName();
8918    }
8919
8920    @Override
8921    public void onProvideStructure(ViewStructure structure) {
8922        super.onProvideStructure(structure);
8923        final boolean isPassword = hasPasswordTransformationMethod()
8924                || isPasswordInputType(getInputType());
8925        if (!isPassword) {
8926            if (mLayout == null) {
8927                assumeLayout();
8928            }
8929            Layout layout = mLayout;
8930            final int lineCount = layout.getLineCount();
8931            if (lineCount <= 1) {
8932                // Simple case: this is a single line.
8933                structure.setText(getText(), getSelectionStart(), getSelectionEnd());
8934            } else {
8935                // Complex case: multi-line, could be scrolled or within a scroll container
8936                // so some lines are not visible.
8937                final int[] tmpCords = new int[2];
8938                getLocationInWindow(tmpCords);
8939                final int topWindowLocation = tmpCords[1];
8940                View root = this;
8941                ViewParent viewParent = getParent();
8942                while (viewParent instanceof View) {
8943                    root = (View) viewParent;
8944                    viewParent = root.getParent();
8945                }
8946                final int windowHeight = root.getHeight();
8947                final int topLine;
8948                final int bottomLine;
8949                if (topWindowLocation >= 0) {
8950                    // The top of the view is fully within its window; start text at line 0.
8951                    topLine = getLineAtCoordinateUnclamped(0);
8952                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1);
8953                } else {
8954                    // The top of hte window has scrolled off the top of the window; figure out
8955                    // the starting line for this.
8956                    topLine = getLineAtCoordinateUnclamped(-topWindowLocation);
8957                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1-topWindowLocation);
8958                }
8959                // We want to return some contextual lines above/below the lines that are
8960                // actually visible.
8961                int expandedTopLine = topLine - (bottomLine-topLine)/2;
8962                if (expandedTopLine < 0) {
8963                    expandedTopLine = 0;
8964                }
8965                int expandedBottomLine = bottomLine + (bottomLine-topLine)/2;
8966                if (expandedBottomLine >= lineCount) {
8967                    expandedBottomLine = lineCount-1;
8968                }
8969                // Convert lines into character offsets.
8970                int expandedTopChar = layout.getLineStart(expandedTopLine);
8971                int expandedBottomChar = layout.getLineEnd(expandedBottomLine);
8972                // Take into account selection -- if there is a selection, we need to expand
8973                // the text we are returning to include that selection.
8974                final int selStart = getSelectionStart();
8975                final int selEnd = getSelectionEnd();
8976                if (selStart < selEnd) {
8977                    if (selStart < expandedTopChar) {
8978                        expandedTopChar = selStart;
8979                    }
8980                    if (selEnd > expandedBottomChar) {
8981                        expandedBottomChar = selEnd;
8982                    }
8983                }
8984                // Get the text and trim it to the range we are reporting.
8985                CharSequence text = getText();
8986                if (expandedTopChar > 0 || expandedBottomChar < text.length()) {
8987                    text = text.subSequence(expandedTopChar, expandedBottomChar);
8988                }
8989                structure.setText(text, selStart-expandedTopChar, selEnd-expandedTopChar);
8990                final int[] lineOffsets = new int[bottomLine-topLine+1];
8991                final int[] lineBaselines = new int[bottomLine-topLine+1];
8992                final int baselineOffset = getBaselineOffset();
8993                for (int i=topLine; i<=bottomLine; i++) {
8994                    lineOffsets[i-topLine] = layout.getLineStart(i);
8995                    lineBaselines[i-topLine] = layout.getLineBaseline(i) + baselineOffset;
8996                }
8997                structure.setTextLines(lineOffsets, lineBaselines);
8998            }
8999
9000            // Extract style information that applies to the TextView as a whole.
9001            int style = 0;
9002            int typefaceStyle = getTypefaceStyle();
9003            if ((typefaceStyle & Typeface.BOLD) != 0) {
9004                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9005            }
9006            if ((typefaceStyle & Typeface.ITALIC) != 0) {
9007                style |= AssistStructure.ViewNode.TEXT_STYLE_ITALIC;
9008            }
9009
9010            // Global styles can also be set via TextView.setPaintFlags().
9011            int paintFlags = mTextPaint.getFlags();
9012            if ((paintFlags & Paint.FAKE_BOLD_TEXT_FLAG) != 0) {
9013                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9014            }
9015            if ((paintFlags & Paint.UNDERLINE_TEXT_FLAG) != 0) {
9016                style |= AssistStructure.ViewNode.TEXT_STYLE_UNDERLINE;
9017            }
9018            if ((paintFlags & Paint.STRIKE_THRU_TEXT_FLAG) != 0) {
9019                style |= AssistStructure.ViewNode.TEXT_STYLE_STRIKE_THRU;
9020            }
9021
9022            // TextView does not have its own text background color. A background is either part
9023            // of the View (and can be any drawable) or a BackgroundColorSpan inside the text.
9024            structure.setTextStyle(getTextSize(), getCurrentTextColor(),
9025                    AssistStructure.ViewNode.TEXT_COLOR_UNDEFINED /* bgColor */, style);
9026        }
9027        structure.setHint(getHint());
9028    }
9029
9030    /** @hide */
9031    @Override
9032    public void onInitializeAccessibilityEventInternal(AccessibilityEvent event) {
9033        super.onInitializeAccessibilityEventInternal(event);
9034
9035        final boolean isPassword = hasPasswordTransformationMethod();
9036        event.setPassword(isPassword);
9037
9038        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
9039            event.setFromIndex(Selection.getSelectionStart(mText));
9040            event.setToIndex(Selection.getSelectionEnd(mText));
9041            event.setItemCount(mText.length());
9042        }
9043    }
9044
9045    /** @hide */
9046    @Override
9047    public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
9048        super.onInitializeAccessibilityNodeInfoInternal(info);
9049
9050        final boolean isPassword = hasPasswordTransformationMethod();
9051        info.setPassword(isPassword);
9052        info.setText(getTextForAccessibility());
9053
9054        if (mBufferType == BufferType.EDITABLE) {
9055            info.setEditable(true);
9056        }
9057
9058        if (mEditor != null) {
9059            info.setInputType(mEditor.mInputType);
9060
9061            if (mEditor.mError != null) {
9062                info.setContentInvalid(true);
9063                info.setError(mEditor.mError);
9064            }
9065        }
9066
9067        if (!TextUtils.isEmpty(mText)) {
9068            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
9069            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
9070            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
9071                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
9072                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
9073                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
9074                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
9075            info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
9076        }
9077
9078        if (isFocused()) {
9079            if (canCopy()) {
9080                info.addAction(AccessibilityNodeInfo.ACTION_COPY);
9081            }
9082            if (canPaste()) {
9083                info.addAction(AccessibilityNodeInfo.ACTION_PASTE);
9084            }
9085            if (canCut()) {
9086                info.addAction(AccessibilityNodeInfo.ACTION_CUT);
9087            }
9088            if (canShare()) {
9089                info.addAction(new AccessibilityNodeInfo.AccessibilityAction(
9090                        ACCESSIBILITY_ACTION_SHARE,
9091                        getResources().getString(com.android.internal.R.string.share)));
9092            }
9093            if (canProcessText()) {  // also implies mEditor is not null.
9094                mEditor.mProcessTextIntentActionsHandler.onInitializeAccessibilityNodeInfo(info);
9095            }
9096        }
9097
9098        // Check for known input filter types.
9099        final int numFilters = mFilters.length;
9100        for (int i = 0; i < numFilters; i++) {
9101            final InputFilter filter = mFilters[i];
9102            if (filter instanceof InputFilter.LengthFilter) {
9103                info.setMaxTextLength(((InputFilter.LengthFilter) filter).getMax());
9104            }
9105        }
9106
9107        if (!isSingleLine()) {
9108            info.setMultiLine(true);
9109        }
9110    }
9111
9112    /**
9113     * Performs an accessibility action after it has been offered to the
9114     * delegate.
9115     *
9116     * @hide
9117     */
9118    @Override
9119    public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
9120        if (mEditor != null
9121                && mEditor.mProcessTextIntentActionsHandler.performAccessibilityAction(action)) {
9122            return true;
9123        }
9124        switch (action) {
9125            case AccessibilityNodeInfo.ACTION_CLICK: {
9126                return performAccessibilityActionClick(arguments);
9127            }
9128            case AccessibilityNodeInfo.ACTION_COPY: {
9129                if (isFocused() && canCopy()) {
9130                    if (onTextContextMenuItem(ID_COPY)) {
9131                        return true;
9132                    }
9133                }
9134            } return false;
9135            case AccessibilityNodeInfo.ACTION_PASTE: {
9136                if (isFocused() && canPaste()) {
9137                    if (onTextContextMenuItem(ID_PASTE)) {
9138                        return true;
9139                    }
9140                }
9141            } return false;
9142            case AccessibilityNodeInfo.ACTION_CUT: {
9143                if (isFocused() && canCut()) {
9144                    if (onTextContextMenuItem(ID_CUT)) {
9145                        return true;
9146                    }
9147                }
9148            } return false;
9149            case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
9150                ensureIterableTextForAccessibilitySelectable();
9151                CharSequence text = getIterableTextForAccessibility();
9152                if (text == null) {
9153                    return false;
9154                }
9155                final int start = (arguments != null) ? arguments.getInt(
9156                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
9157                final int end = (arguments != null) ? arguments.getInt(
9158                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
9159                if ((getSelectionStart() != start || getSelectionEnd() != end)) {
9160                    // No arguments clears the selection.
9161                    if (start == end && end == -1) {
9162                        Selection.removeSelection((Spannable) text);
9163                        return true;
9164                    }
9165                    if (start >= 0 && start <= end && end <= text.length()) {
9166                        Selection.setSelection((Spannable) text, start, end);
9167                        // Make sure selection mode is engaged.
9168                        if (mEditor != null) {
9169                            mEditor.startSelectionActionMode();
9170                        }
9171                        return true;
9172                    }
9173                }
9174            } return false;
9175            case AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY:
9176            case AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY: {
9177                ensureIterableTextForAccessibilitySelectable();
9178                return super.performAccessibilityActionInternal(action, arguments);
9179            }
9180            case ACCESSIBILITY_ACTION_SHARE: {
9181                if (isFocused() && canShare()) {
9182                    if (onTextContextMenuItem(ID_SHARE)) {
9183                        return true;
9184                    }
9185                }
9186            } return false;
9187            default: {
9188                return super.performAccessibilityActionInternal(action, arguments);
9189            }
9190        }
9191    }
9192
9193    private boolean performAccessibilityActionClick(Bundle arguments) {
9194        boolean handled = false;
9195        boolean processed = false;
9196
9197        if (!isEnabled()) {
9198            return false;
9199        }
9200
9201        if (arguments != null && arguments.containsKey(
9202                AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_SPAN_INDEX_INT)) {
9203            int spanIndex = arguments.getInt(
9204                    AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_SPAN_INDEX_INT, -1);
9205            if (spanIndex >= 0 && hasSpannableText()) {
9206                ClickableSpan[] spans = ((Spannable) mText).getSpans(0,
9207                        mText.length(), ClickableSpan.class);
9208                if (spans != null && spans.length > spanIndex && spans[spanIndex] != null) {
9209                    // Simulate View.onTouchEvent for an ACTION_UP event
9210                    if (isFocusable() && !isFocused()) {
9211                        requestFocus();
9212                    }
9213                    spans[spanIndex].onClick(this);
9214                    handled = true;
9215                }
9216            }
9217            processed = true;
9218        }
9219
9220        if (!processed && arguments != null &&  arguments.containsKey(
9221                AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_CHARACTER_INDEX_INT)) {
9222            int characterIndex = arguments.getInt(
9223                    AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_CHARACTER_INDEX_INT, -1);
9224            if (characterIndex >= 0 && hasSpannableText()) {
9225                ClickableSpan[] spans = ((Spannable) mText).getSpans(characterIndex,
9226                        characterIndex, ClickableSpan.class);
9227                // click only on the first span to keep parity with onTouch() implementation
9228                if (spans != null && spans.length > 0 && spans[0] != null) {
9229                    // Simulate View.onTouchEvent for an ACTION_UP event
9230                    if (isFocusable() && !isFocused()) {
9231                        requestFocus();
9232                    }
9233                    spans[0].onClick(this);
9234                    handled = true;
9235                }
9236            }
9237            processed = true;
9238        }
9239
9240        if (!processed && (isClickable() || isLongClickable())) {
9241            // Simulate View.onTouchEvent for an ACTION_UP event
9242            if (isFocusable() && !isFocused()) {
9243                requestFocus();
9244            }
9245
9246            performClick();
9247            handled = true;
9248        }
9249
9250        // Show the IME, except when selecting in read-only text.
9251        if ((mMovement != null || onCheckIsTextEditor()) && hasSpannableText() && mLayout != null
9252                && (isTextEditable() || isTextSelectable()) && isFocused()) {
9253            final InputMethodManager imm = InputMethodManager.peekInstance();
9254            viewClicked(imm);
9255            if (!isTextSelectable() && mEditor.mShowSoftInputOnFocus && imm != null) {
9256                handled |= imm.showSoftInput(this, 0);
9257            }
9258        }
9259
9260        return handled;
9261    }
9262
9263    private boolean hasSpannableText() {
9264        return mText != null && mText instanceof Spannable;
9265    }
9266
9267    /** @hide */
9268    @Override
9269    public void sendAccessibilityEventInternal(int eventType) {
9270        if (eventType == AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED && mEditor != null) {
9271            mEditor.mProcessTextIntentActionsHandler.initializeAccessibilityActions();
9272        }
9273
9274        // Do not send scroll events since first they are not interesting for
9275        // accessibility and second such events a generated too frequently.
9276        // For details see the implementation of bringTextIntoView().
9277        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
9278            return;
9279        }
9280        super.sendAccessibilityEventInternal(eventType);
9281    }
9282
9283    /**
9284     * Returns the text that should be exposed to accessibility services.
9285     * <p>
9286     * This approximates what is displayed visually. If the user has specified
9287     * that accessibility services should speak passwords, this method will
9288     * bypass any password transformation method and return unobscured text.
9289     *
9290     * @return the text that should be exposed to accessibility services, may
9291     *         be {@code null} if no text is set
9292     */
9293    @Nullable
9294    private CharSequence getTextForAccessibility() {
9295        // If the text is empty, we must be showing the hint text.
9296        if (TextUtils.isEmpty(mText)) {
9297            return mHint;
9298        }
9299
9300        // Check whether we need to bypass the transformation
9301        // method and expose unobscured text.
9302        if (hasPasswordTransformationMethod() && shouldSpeakPasswordsForAccessibility()) {
9303            return mText;
9304        }
9305
9306        // Otherwise, speak whatever text is being displayed.
9307        return mTransformed;
9308    }
9309
9310    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
9311            int fromIndex, int removedCount, int addedCount) {
9312        AccessibilityEvent event =
9313                AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
9314        event.setFromIndex(fromIndex);
9315        event.setRemovedCount(removedCount);
9316        event.setAddedCount(addedCount);
9317        event.setBeforeText(beforeText);
9318        sendAccessibilityEventUnchecked(event);
9319    }
9320
9321    /**
9322     * Returns whether this text view is a current input method target.  The
9323     * default implementation just checks with {@link InputMethodManager}.
9324     */
9325    public boolean isInputMethodTarget() {
9326        InputMethodManager imm = InputMethodManager.peekInstance();
9327        return imm != null && imm.isActive(this);
9328    }
9329
9330    static final int ID_SELECT_ALL = android.R.id.selectAll;
9331    static final int ID_UNDO = android.R.id.undo;
9332    static final int ID_REDO = android.R.id.redo;
9333    static final int ID_CUT = android.R.id.cut;
9334    static final int ID_COPY = android.R.id.copy;
9335    static final int ID_PASTE = android.R.id.paste;
9336    static final int ID_SHARE = android.R.id.shareText;
9337    static final int ID_PASTE_AS_PLAIN_TEXT = android.R.id.pasteAsPlainText;
9338    static final int ID_REPLACE = android.R.id.replaceText;
9339
9340    /**
9341     * Called when a context menu option for the text view is selected.  Currently
9342     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
9343     * {@link android.R.id#copy}, {@link android.R.id#paste} or {@link android.R.id#shareText}.
9344     *
9345     * @return true if the context menu item action was performed.
9346     */
9347    public boolean onTextContextMenuItem(int id) {
9348        int min = 0;
9349        int max = mText.length();
9350
9351        if (isFocused()) {
9352            final int selStart = getSelectionStart();
9353            final int selEnd = getSelectionEnd();
9354
9355            min = Math.max(0, Math.min(selStart, selEnd));
9356            max = Math.max(0, Math.max(selStart, selEnd));
9357        }
9358
9359        switch (id) {
9360            case ID_SELECT_ALL:
9361                // This starts an action mode if triggered from another action mode. Text is
9362                // highlighted, so that it can be bulk edited, like selectAllOnFocus does. Returns
9363                // true even if text is empty.
9364                boolean shouldRestartActionMode =
9365                        mEditor != null && mEditor.mTextActionMode != null;
9366                stopTextActionMode();
9367                selectAllText();
9368                if (shouldRestartActionMode) {
9369                    mEditor.startSelectionActionMode();
9370                }
9371                return true;
9372
9373            case ID_UNDO:
9374                if (mEditor != null) {
9375                    mEditor.undo();
9376                }
9377                return true;  // Returns true even if nothing was undone.
9378
9379            case ID_REDO:
9380                if (mEditor != null) {
9381                    mEditor.redo();
9382                }
9383                return true;  // Returns true even if nothing was undone.
9384
9385            case ID_PASTE:
9386                paste(min, max, true /* withFormatting */);
9387                return true;
9388
9389            case ID_PASTE_AS_PLAIN_TEXT:
9390                paste(min, max, false /* withFormatting */);
9391                return true;
9392
9393            case ID_CUT:
9394                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9395                deleteText_internal(min, max);
9396                stopTextActionMode();
9397                return true;
9398
9399            case ID_COPY:
9400                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9401                stopTextActionMode();
9402                return true;
9403
9404            case ID_REPLACE:
9405                if (mEditor != null) {
9406                    mEditor.replace();
9407                }
9408                return true;
9409
9410            case ID_SHARE:
9411                shareSelectedText();
9412                return true;
9413        }
9414        return false;
9415    }
9416
9417    CharSequence getTransformedText(int start, int end) {
9418        return removeSuggestionSpans(mTransformed.subSequence(start, end));
9419    }
9420
9421    @Override
9422    public boolean performLongClick() {
9423        boolean handled = false;
9424
9425        if (mEditor != null) {
9426            mEditor.mIsBeingLongClicked = true;
9427        }
9428
9429        if (super.performLongClick()) {
9430            handled = true;
9431        }
9432
9433        if (mEditor != null) {
9434            handled |= mEditor.performLongClick(handled);
9435            mEditor.mIsBeingLongClicked = false;
9436        }
9437
9438        if (handled) {
9439            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
9440            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
9441        }
9442
9443        return handled;
9444    }
9445
9446    @Override
9447    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
9448        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
9449        if (mEditor != null) {
9450            mEditor.onScrollChanged();
9451        }
9452    }
9453
9454    /**
9455     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
9456     * by the IME or by the spell checker as the user types. This is done by adding
9457     * {@link SuggestionSpan}s to the text.
9458     *
9459     * When suggestions are enabled (default), this list of suggestions will be displayed when the
9460     * user asks for them on these parts of the text. This value depends on the inputType of this
9461     * TextView.
9462     *
9463     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
9464     *
9465     * In addition, the type variation must be one of
9466     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
9467     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
9468     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
9469     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
9470     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
9471     *
9472     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
9473     *
9474     * @return true if the suggestions popup window is enabled, based on the inputType.
9475     */
9476    public boolean isSuggestionsEnabled() {
9477        if (mEditor == null) return false;
9478        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
9479            return false;
9480        }
9481        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
9482
9483        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
9484        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
9485                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
9486                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
9487                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
9488                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
9489    }
9490
9491    /**
9492     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9493     * selection is initiated in this View.
9494     *
9495     * <p>The standard implementation populates the menu with a subset of Select All, Cut, Copy,
9496     * Paste, Replace and Share actions, depending on what this View supports.
9497     *
9498     * <p>A custom implementation can add new entries in the default menu in its
9499     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, android.view.Menu)}
9500     * method. The default actions can also be removed from the menu using
9501     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9502     * {@link android.R.id#cut}, {@link android.R.id#copy}, {@link android.R.id#paste},
9503     * {@link android.R.id#replaceText} or {@link android.R.id#shareText} ids as parameters.
9504     *
9505     * <p>Returning false from
9506     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, android.view.Menu)}
9507     * will prevent the action mode from being started.
9508     *
9509     * <p>Action click events should be handled by the custom implementation of
9510     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode,
9511     * android.view.MenuItem)}.
9512     *
9513     * <p>Note that text selection mode is not started when a TextView receives focus and the
9514     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
9515     * that case, to allow for quick replacement.
9516     */
9517    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
9518        createEditorIfNeeded();
9519        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
9520    }
9521
9522    /**
9523     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
9524     *
9525     * @return The current custom selection callback.
9526     */
9527    public ActionMode.Callback getCustomSelectionActionModeCallback() {
9528        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
9529    }
9530
9531    /**
9532     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9533     * insertion is initiated in this View.
9534     * The standard implementation populates the menu with a subset of Select All,
9535     * Paste and Replace actions, depending on what this View supports.
9536     *
9537     * <p>A custom implementation can add new entries in the default menu in its
9538     * {@link android.view.ActionMode.Callback#onPrepareActionMode(android.view.ActionMode,
9539     * android.view.Menu)} method. The default actions can also be removed from the menu using
9540     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9541     * {@link android.R.id#paste} or {@link android.R.id#replaceText} ids as parameters.</p>
9542     *
9543     * <p>Returning false from
9544     * {@link android.view.ActionMode.Callback#onCreateActionMode(android.view.ActionMode,
9545     * android.view.Menu)} will prevent the action mode from being started.</p>
9546     *
9547     * <p>Action click events should be handled by the custom implementation of
9548     * {@link android.view.ActionMode.Callback#onActionItemClicked(android.view.ActionMode,
9549     * android.view.MenuItem)}.</p>
9550     *
9551     * <p>Note that text insertion mode is not started when a TextView receives focus and the
9552     * {@link android.R.attr#selectAllOnFocus} flag has been set.</p>
9553     */
9554    public void setCustomInsertionActionModeCallback(ActionMode.Callback actionModeCallback) {
9555        createEditorIfNeeded();
9556        mEditor.mCustomInsertionActionModeCallback = actionModeCallback;
9557    }
9558
9559    /**
9560     * Retrieves the value set in {@link #setCustomInsertionActionModeCallback}. Default is null.
9561     *
9562     * @return The current custom insertion callback.
9563     */
9564    public ActionMode.Callback getCustomInsertionActionModeCallback() {
9565        return mEditor == null ? null : mEditor.mCustomInsertionActionModeCallback;
9566    }
9567
9568    /**
9569     * @hide
9570     */
9571    protected void stopTextActionMode() {
9572        if (mEditor != null) {
9573            mEditor.stopTextActionMode();
9574        }
9575    }
9576
9577    boolean canUndo() {
9578        return mEditor != null && mEditor.canUndo();
9579    }
9580
9581    boolean canRedo() {
9582        return mEditor != null && mEditor.canRedo();
9583    }
9584
9585    boolean canCut() {
9586        if (hasPasswordTransformationMethod()) {
9587            return false;
9588        }
9589
9590        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
9591                mEditor.mKeyListener != null) {
9592            return true;
9593        }
9594
9595        return false;
9596    }
9597
9598    boolean canCopy() {
9599        if (hasPasswordTransformationMethod()) {
9600            return false;
9601        }
9602
9603        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9604            return true;
9605        }
9606
9607        return false;
9608    }
9609
9610    boolean canShare() {
9611        return canCopy();
9612    }
9613
9614    boolean canPaste() {
9615        return (mText instanceof Editable &&
9616                mEditor != null && mEditor.mKeyListener != null &&
9617                getSelectionStart() >= 0 &&
9618                getSelectionEnd() >= 0 &&
9619                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
9620                hasPrimaryClip());
9621    }
9622
9623    boolean canProcessText() {
9624        if (!getContext().canStartActivityForResult() || getId() == View.NO_ID
9625                || hasPasswordTransformationMethod()) {
9626            return false;
9627        }
9628
9629        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9630            return true;
9631        }
9632
9633        return false;
9634    }
9635
9636    boolean canSelectAllText() {
9637        return canSelectText() && !hasPasswordTransformationMethod()
9638                && !(getSelectionStart() == 0 && getSelectionEnd() == mText.length());
9639    }
9640
9641    boolean selectAllText() {
9642        // Need to hide insert point cursor controller before settings selection, otherwise insert
9643        // point cursor controller obtains cursor update event and update cursor with cancelling
9644        // selection.
9645        if (mEditor != null) {
9646            mEditor.hideInsertionPointCursorController();
9647        }
9648        final int length = mText.length();
9649        Selection.setSelection((Spannable) mText, 0, length);
9650        return length > 0;
9651    }
9652
9653    void replaceSelectionWithText(CharSequence text) {
9654        ((Editable) mText).replace(getSelectionStart(), getSelectionEnd(), text);
9655    }
9656
9657    /**
9658     * Paste clipboard content between min and max positions.
9659     */
9660    private void paste(int min, int max, boolean withFormatting) {
9661        ClipboardManager clipboard =
9662            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
9663        ClipData clip = clipboard.getPrimaryClip();
9664        if (clip != null) {
9665            boolean didFirst = false;
9666            for (int i=0; i<clip.getItemCount(); i++) {
9667                final CharSequence paste;
9668                if (withFormatting) {
9669                    paste = clip.getItemAt(i).coerceToStyledText(getContext());
9670                } else {
9671                    // Get an item as text and remove all spans by toString().
9672                    final CharSequence text = clip.getItemAt(i).coerceToText(getContext());
9673                    paste = (text instanceof Spanned) ? text.toString() : text;
9674                }
9675                if (paste != null) {
9676                    if (!didFirst) {
9677                        Selection.setSelection((Spannable) mText, max);
9678                        ((Editable) mText).replace(min, max, paste);
9679                        didFirst = true;
9680                    } else {
9681                        ((Editable) mText).insert(getSelectionEnd(), "\n");
9682                        ((Editable) mText).insert(getSelectionEnd(), paste);
9683                    }
9684                }
9685            }
9686            stopTextActionMode();
9687            sLastCutCopyOrTextChangedTime = 0;
9688        }
9689    }
9690
9691    private void shareSelectedText() {
9692        String selectedText = getSelectedText();
9693        if (selectedText != null && !selectedText.isEmpty()) {
9694            Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
9695            sharingIntent.setType("text/plain");
9696            sharingIntent.removeExtra(android.content.Intent.EXTRA_TEXT);
9697            sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, selectedText);
9698            getContext().startActivity(Intent.createChooser(sharingIntent, null));
9699            stopTextActionMode();
9700        }
9701    }
9702
9703    private void setPrimaryClip(ClipData clip) {
9704        ClipboardManager clipboard = (ClipboardManager) getContext().
9705                getSystemService(Context.CLIPBOARD_SERVICE);
9706        clipboard.setPrimaryClip(clip);
9707        sLastCutCopyOrTextChangedTime = SystemClock.uptimeMillis();
9708    }
9709
9710    /**
9711     * Get the character offset closest to the specified absolute position. A typical use case is to
9712     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
9713     *
9714     * @param x The horizontal absolute position of a point on screen
9715     * @param y The vertical absolute position of a point on screen
9716     * @return the character offset for the character whose position is closest to the specified
9717     *  position. Returns -1 if there is no layout.
9718     */
9719    public int getOffsetForPosition(float x, float y) {
9720        if (getLayout() == null) return -1;
9721        final int line = getLineAtCoordinate(y);
9722        final int offset = getOffsetAtCoordinate(line, x);
9723        return offset;
9724    }
9725
9726    float convertToLocalHorizontalCoordinate(float x) {
9727        x -= getTotalPaddingLeft();
9728        // Clamp the position to inside of the view.
9729        x = Math.max(0.0f, x);
9730        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
9731        x += getScrollX();
9732        return x;
9733    }
9734
9735    int getLineAtCoordinate(float y) {
9736        y -= getTotalPaddingTop();
9737        // Clamp the position to inside of the view.
9738        y = Math.max(0.0f, y);
9739        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
9740        y += getScrollY();
9741        return getLayout().getLineForVertical((int) y);
9742    }
9743
9744    int getLineAtCoordinateUnclamped(float y) {
9745        y -= getTotalPaddingTop();
9746        y += getScrollY();
9747        return getLayout().getLineForVertical((int) y);
9748    }
9749
9750    int getOffsetAtCoordinate(int line, float x) {
9751        x = convertToLocalHorizontalCoordinate(x);
9752        return getLayout().getOffsetForHorizontal(line, x);
9753    }
9754
9755    @Override
9756    public boolean onDragEvent(DragEvent event) {
9757        switch (event.getAction()) {
9758            case DragEvent.ACTION_DRAG_STARTED:
9759                return mEditor != null && mEditor.hasInsertionController();
9760
9761            case DragEvent.ACTION_DRAG_ENTERED:
9762                TextView.this.requestFocus();
9763                return true;
9764
9765            case DragEvent.ACTION_DRAG_LOCATION:
9766                final int offset = getOffsetForPosition(event.getX(), event.getY());
9767                Selection.setSelection((Spannable)mText, offset);
9768                return true;
9769
9770            case DragEvent.ACTION_DROP:
9771                if (mEditor != null) mEditor.onDrop(event);
9772                return true;
9773
9774            case DragEvent.ACTION_DRAG_ENDED:
9775            case DragEvent.ACTION_DRAG_EXITED:
9776            default:
9777                return true;
9778        }
9779    }
9780
9781    boolean isInBatchEditMode() {
9782        if (mEditor == null) return false;
9783        final Editor.InputMethodState ims = mEditor.mInputMethodState;
9784        if (ims != null) {
9785            return ims.mBatchEditNesting > 0;
9786        }
9787        return mEditor.mInBatchEditControllers;
9788    }
9789
9790    @Override
9791    public void onRtlPropertiesChanged(int layoutDirection) {
9792        super.onRtlPropertiesChanged(layoutDirection);
9793
9794        final TextDirectionHeuristic newTextDir = getTextDirectionHeuristic();
9795        if (mTextDir != newTextDir) {
9796            mTextDir = newTextDir;
9797            if (mLayout != null) {
9798                checkForRelayout();
9799            }
9800        }
9801    }
9802
9803    /**
9804     * @hide
9805     */
9806    protected TextDirectionHeuristic getTextDirectionHeuristic() {
9807        if (hasPasswordTransformationMethod()) {
9808            // passwords fields should be LTR
9809            return TextDirectionHeuristics.LTR;
9810        }
9811
9812        // Always need to resolve layout direction first
9813        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
9814
9815        // Now, we can select the heuristic
9816        switch (getTextDirection()) {
9817            default:
9818            case TEXT_DIRECTION_FIRST_STRONG:
9819                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
9820                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
9821            case TEXT_DIRECTION_ANY_RTL:
9822                return TextDirectionHeuristics.ANYRTL_LTR;
9823            case TEXT_DIRECTION_LTR:
9824                return TextDirectionHeuristics.LTR;
9825            case TEXT_DIRECTION_RTL:
9826                return TextDirectionHeuristics.RTL;
9827            case TEXT_DIRECTION_LOCALE:
9828                return TextDirectionHeuristics.LOCALE;
9829            case TEXT_DIRECTION_FIRST_STRONG_LTR:
9830                return TextDirectionHeuristics.FIRSTSTRONG_LTR;
9831            case TEXT_DIRECTION_FIRST_STRONG_RTL:
9832                return TextDirectionHeuristics.FIRSTSTRONG_RTL;
9833        }
9834    }
9835
9836    /**
9837     * @hide
9838     */
9839    @Override
9840    public void onResolveDrawables(int layoutDirection) {
9841        // No need to resolve twice
9842        if (mLastLayoutDirection == layoutDirection) {
9843            return;
9844        }
9845        mLastLayoutDirection = layoutDirection;
9846
9847        // Resolve drawables
9848        if (mDrawables != null) {
9849            mDrawables.resolveWithLayoutDirection(layoutDirection);
9850        }
9851    }
9852
9853    /**
9854     * @hide
9855     */
9856    protected void resetResolvedDrawables() {
9857        super.resetResolvedDrawables();
9858        mLastLayoutDirection = -1;
9859    }
9860
9861    /**
9862     * @hide
9863     */
9864    protected void viewClicked(InputMethodManager imm) {
9865        if (imm != null) {
9866            imm.viewClicked(this);
9867        }
9868    }
9869
9870    /**
9871     * Deletes the range of text [start, end[.
9872     * @hide
9873     */
9874    protected void deleteText_internal(int start, int end) {
9875        ((Editable) mText).delete(start, end);
9876    }
9877
9878    /**
9879     * Replaces the range of text [start, end[ by replacement text
9880     * @hide
9881     */
9882    protected void replaceText_internal(int start, int end, CharSequence text) {
9883        ((Editable) mText).replace(start, end, text);
9884    }
9885
9886    /**
9887     * Sets a span on the specified range of text
9888     * @hide
9889     */
9890    protected void setSpan_internal(Object span, int start, int end, int flags) {
9891        ((Editable) mText).setSpan(span, start, end, flags);
9892    }
9893
9894    /**
9895     * Moves the cursor to the specified offset position in text
9896     * @hide
9897     */
9898    protected void setCursorPosition_internal(int start, int end) {
9899        Selection.setSelection(((Editable) mText), start, end);
9900    }
9901
9902    /**
9903     * An Editor should be created as soon as any of the editable-specific fields (grouped
9904     * inside the Editor object) is assigned to a non-default value.
9905     * This method will create the Editor if needed.
9906     *
9907     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
9908     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
9909     * Editor for backward compatibility, as soon as one of these fields is assigned.
9910     *
9911     * Also note that for performance reasons, the mEditor is created when needed, but not
9912     * reset when no more edit-specific fields are needed.
9913     */
9914    private void createEditorIfNeeded() {
9915        if (mEditor == null) {
9916            mEditor = new Editor(this);
9917        }
9918    }
9919
9920    /**
9921     * @hide
9922     */
9923    @Override
9924    public CharSequence getIterableTextForAccessibility() {
9925        return mText;
9926    }
9927
9928    private void ensureIterableTextForAccessibilitySelectable() {
9929        if (!(mText instanceof Spannable)) {
9930            setText(mText, BufferType.SPANNABLE);
9931        }
9932    }
9933
9934    /**
9935     * @hide
9936     */
9937    @Override
9938    public TextSegmentIterator getIteratorForGranularity(int granularity) {
9939        switch (granularity) {
9940            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
9941                Spannable text = (Spannable) getIterableTextForAccessibility();
9942                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9943                    AccessibilityIterators.LineTextSegmentIterator iterator =
9944                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
9945                    iterator.initialize(text, getLayout());
9946                    return iterator;
9947                }
9948            } break;
9949            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
9950                Spannable text = (Spannable) getIterableTextForAccessibility();
9951                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9952                    AccessibilityIterators.PageTextSegmentIterator iterator =
9953                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
9954                    iterator.initialize(this);
9955                    return iterator;
9956                }
9957            } break;
9958        }
9959        return super.getIteratorForGranularity(granularity);
9960    }
9961
9962    /**
9963     * @hide
9964     */
9965    @Override
9966    public int getAccessibilitySelectionStart() {
9967        return getSelectionStart();
9968    }
9969
9970    /**
9971     * @hide
9972     */
9973    public boolean isAccessibilitySelectionExtendable() {
9974        return true;
9975    }
9976
9977    /**
9978     * @hide
9979     */
9980    @Override
9981    public int getAccessibilitySelectionEnd() {
9982        return getSelectionEnd();
9983    }
9984
9985    /**
9986     * @hide
9987     */
9988    @Override
9989    public void setAccessibilitySelection(int start, int end) {
9990        if (getAccessibilitySelectionStart() == start
9991                && getAccessibilitySelectionEnd() == end) {
9992            return;
9993        }
9994        // Hide all selection controllers used for adjusting selection
9995        // since we are doing so explicitlty by other means and these
9996        // controllers interact with how selection behaves.
9997        if (mEditor != null) {
9998            mEditor.hideCursorAndSpanControllers();
9999            mEditor.stopTextActionMode();
10000        }
10001        CharSequence text = getIterableTextForAccessibility();
10002        if (Math.min(start, end) >= 0 && Math.max(start, end) <= text.length()) {
10003            Selection.setSelection((Spannable) text, start, end);
10004        } else {
10005            Selection.removeSelection((Spannable) text);
10006        }
10007    }
10008
10009    /** @hide */
10010    @Override
10011    protected void encodeProperties(@NonNull ViewHierarchyEncoder stream) {
10012        super.encodeProperties(stream);
10013
10014        TruncateAt ellipsize = getEllipsize();
10015        stream.addProperty("text:ellipsize", ellipsize == null ? null : ellipsize.name());
10016        stream.addProperty("text:textSize", getTextSize());
10017        stream.addProperty("text:scaledTextSize", getScaledTextSize());
10018        stream.addProperty("text:typefaceStyle", getTypefaceStyle());
10019        stream.addProperty("text:selectionStart", getSelectionStart());
10020        stream.addProperty("text:selectionEnd", getSelectionEnd());
10021        stream.addProperty("text:curTextColor", mCurTextColor);
10022        stream.addProperty("text:text", mText == null ? null : mText.toString());
10023        stream.addProperty("text:gravity", mGravity);
10024    }
10025
10026    /**
10027     * User interface state that is stored by TextView for implementing
10028     * {@link View#onSaveInstanceState}.
10029     */
10030    public static class SavedState extends BaseSavedState {
10031        int selStart;
10032        int selEnd;
10033        CharSequence text;
10034        boolean frozenWithFocus;
10035        CharSequence error;
10036        ParcelableParcel editorState;  // Optional state from Editor.
10037
10038        SavedState(Parcelable superState) {
10039            super(superState);
10040        }
10041
10042        @Override
10043        public void writeToParcel(Parcel out, int flags) {
10044            super.writeToParcel(out, flags);
10045            out.writeInt(selStart);
10046            out.writeInt(selEnd);
10047            out.writeInt(frozenWithFocus ? 1 : 0);
10048            TextUtils.writeToParcel(text, out, flags);
10049
10050            if (error == null) {
10051                out.writeInt(0);
10052            } else {
10053                out.writeInt(1);
10054                TextUtils.writeToParcel(error, out, flags);
10055            }
10056
10057            if (editorState == null) {
10058                out.writeInt(0);
10059            } else {
10060                out.writeInt(1);
10061                editorState.writeToParcel(out, flags);
10062            }
10063        }
10064
10065        @Override
10066        public String toString() {
10067            String str = "TextView.SavedState{"
10068                    + Integer.toHexString(System.identityHashCode(this))
10069                    + " start=" + selStart + " end=" + selEnd;
10070            if (text != null) {
10071                str += " text=" + text;
10072            }
10073            return str + "}";
10074        }
10075
10076        @SuppressWarnings("hiding")
10077        public static final Parcelable.Creator<SavedState> CREATOR
10078                = new Parcelable.Creator<SavedState>() {
10079            public SavedState createFromParcel(Parcel in) {
10080                return new SavedState(in);
10081            }
10082
10083            public SavedState[] newArray(int size) {
10084                return new SavedState[size];
10085            }
10086        };
10087
10088        private SavedState(Parcel in) {
10089            super(in);
10090            selStart = in.readInt();
10091            selEnd = in.readInt();
10092            frozenWithFocus = (in.readInt() != 0);
10093            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
10094
10095            if (in.readInt() != 0) {
10096                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
10097            }
10098
10099            if (in.readInt() != 0) {
10100                editorState = ParcelableParcel.CREATOR.createFromParcel(in);
10101            }
10102        }
10103    }
10104
10105    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
10106        private char[] mChars;
10107        private int mStart, mLength;
10108
10109        public CharWrapper(char[] chars, int start, int len) {
10110            mChars = chars;
10111            mStart = start;
10112            mLength = len;
10113        }
10114
10115        /* package */ void set(char[] chars, int start, int len) {
10116            mChars = chars;
10117            mStart = start;
10118            mLength = len;
10119        }
10120
10121        public int length() {
10122            return mLength;
10123        }
10124
10125        public char charAt(int off) {
10126            return mChars[off + mStart];
10127        }
10128
10129        @Override
10130        public String toString() {
10131            return new String(mChars, mStart, mLength);
10132        }
10133
10134        public CharSequence subSequence(int start, int end) {
10135            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10136                throw new IndexOutOfBoundsException(start + ", " + end);
10137            }
10138
10139            return new String(mChars, start + mStart, end - start);
10140        }
10141
10142        public void getChars(int start, int end, char[] buf, int off) {
10143            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10144                throw new IndexOutOfBoundsException(start + ", " + end);
10145            }
10146
10147            System.arraycopy(mChars, start + mStart, buf, off, end - start);
10148        }
10149
10150        public void drawText(Canvas c, int start, int end,
10151                             float x, float y, Paint p) {
10152            c.drawText(mChars, start + mStart, end - start, x, y, p);
10153        }
10154
10155        public void drawTextRun(Canvas c, int start, int end,
10156                int contextStart, int contextEnd, float x, float y, boolean isRtl, Paint p) {
10157            int count = end - start;
10158            int contextCount = contextEnd - contextStart;
10159            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
10160                    contextCount, x, y, isRtl, p);
10161        }
10162
10163        public float measureText(int start, int end, Paint p) {
10164            return p.measureText(mChars, start + mStart, end - start);
10165        }
10166
10167        public int getTextWidths(int start, int end, float[] widths, Paint p) {
10168            return p.getTextWidths(mChars, start + mStart, end - start, widths);
10169        }
10170
10171        public float getTextRunAdvances(int start, int end, int contextStart,
10172                int contextEnd, boolean isRtl, float[] advances, int advancesIndex,
10173                Paint p) {
10174            int count = end - start;
10175            int contextCount = contextEnd - contextStart;
10176            return p.getTextRunAdvances(mChars, start + mStart, count,
10177                    contextStart + mStart, contextCount, isRtl, advances,
10178                    advancesIndex);
10179        }
10180
10181        public int getTextRunCursor(int contextStart, int contextEnd, int dir,
10182                int offset, int cursorOpt, Paint p) {
10183            int contextCount = contextEnd - contextStart;
10184            return p.getTextRunCursor(mChars, contextStart + mStart,
10185                    contextCount, dir, offset + mStart, cursorOpt);
10186        }
10187    }
10188
10189    private static final class Marquee {
10190        // TODO: Add an option to configure this
10191        private static final float MARQUEE_DELTA_MAX = 0.07f;
10192        private static final int MARQUEE_DELAY = 1200;
10193        private static final int MARQUEE_DP_PER_SECOND = 30;
10194
10195        private static final byte MARQUEE_STOPPED = 0x0;
10196        private static final byte MARQUEE_STARTING = 0x1;
10197        private static final byte MARQUEE_RUNNING = 0x2;
10198
10199        private final WeakReference<TextView> mView;
10200        private final Choreographer mChoreographer;
10201
10202        private byte mStatus = MARQUEE_STOPPED;
10203        private final float mPixelsPerSecond;
10204        private float mMaxScroll;
10205        private float mMaxFadeScroll;
10206        private float mGhostStart;
10207        private float mGhostOffset;
10208        private float mFadeStop;
10209        private int mRepeatLimit;
10210
10211        private float mScroll;
10212        private long mLastAnimationMs;
10213
10214        Marquee(TextView v) {
10215            final float density = v.getContext().getResources().getDisplayMetrics().density;
10216            mPixelsPerSecond = MARQUEE_DP_PER_SECOND * density;
10217            mView = new WeakReference<TextView>(v);
10218            mChoreographer = Choreographer.getInstance();
10219        }
10220
10221        private Choreographer.FrameCallback mTickCallback = new Choreographer.FrameCallback() {
10222            @Override
10223            public void doFrame(long frameTimeNanos) {
10224                tick();
10225            }
10226        };
10227
10228        private Choreographer.FrameCallback mStartCallback = new Choreographer.FrameCallback() {
10229            @Override
10230            public void doFrame(long frameTimeNanos) {
10231                mStatus = MARQUEE_RUNNING;
10232                mLastAnimationMs = mChoreographer.getFrameTime();
10233                tick();
10234            }
10235        };
10236
10237        private Choreographer.FrameCallback mRestartCallback = new Choreographer.FrameCallback() {
10238            @Override
10239            public void doFrame(long frameTimeNanos) {
10240                if (mStatus == MARQUEE_RUNNING) {
10241                    if (mRepeatLimit >= 0) {
10242                        mRepeatLimit--;
10243                    }
10244                    start(mRepeatLimit);
10245                }
10246            }
10247        };
10248
10249        void tick() {
10250            if (mStatus != MARQUEE_RUNNING) {
10251                return;
10252            }
10253
10254            mChoreographer.removeFrameCallback(mTickCallback);
10255
10256            final TextView textView = mView.get();
10257            if (textView != null && (textView.isFocused() || textView.isSelected())) {
10258                long currentMs = mChoreographer.getFrameTime();
10259                long deltaMs = currentMs - mLastAnimationMs;
10260                mLastAnimationMs = currentMs;
10261                float deltaPx = deltaMs / 1000f * mPixelsPerSecond;
10262                mScroll += deltaPx;
10263                if (mScroll > mMaxScroll) {
10264                    mScroll = mMaxScroll;
10265                    mChoreographer.postFrameCallbackDelayed(mRestartCallback, MARQUEE_DELAY);
10266                } else {
10267                    mChoreographer.postFrameCallback(mTickCallback);
10268                }
10269                textView.invalidate();
10270            }
10271        }
10272
10273        void stop() {
10274            mStatus = MARQUEE_STOPPED;
10275            mChoreographer.removeFrameCallback(mStartCallback);
10276            mChoreographer.removeFrameCallback(mRestartCallback);
10277            mChoreographer.removeFrameCallback(mTickCallback);
10278            resetScroll();
10279        }
10280
10281        private void resetScroll() {
10282            mScroll = 0.0f;
10283            final TextView textView = mView.get();
10284            if (textView != null) textView.invalidate();
10285        }
10286
10287        void start(int repeatLimit) {
10288            if (repeatLimit == 0) {
10289                stop();
10290                return;
10291            }
10292            mRepeatLimit = repeatLimit;
10293            final TextView textView = mView.get();
10294            if (textView != null && textView.mLayout != null) {
10295                mStatus = MARQUEE_STARTING;
10296                mScroll = 0.0f;
10297                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
10298                        textView.getCompoundPaddingRight();
10299                final float lineWidth = textView.mLayout.getLineWidth(0);
10300                final float gap = textWidth / 3.0f;
10301                mGhostStart = lineWidth - textWidth + gap;
10302                mMaxScroll = mGhostStart + textWidth;
10303                mGhostOffset = lineWidth + gap;
10304                mFadeStop = lineWidth + textWidth / 6.0f;
10305                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
10306
10307                textView.invalidate();
10308                mChoreographer.postFrameCallback(mStartCallback);
10309            }
10310        }
10311
10312        float getGhostOffset() {
10313            return mGhostOffset;
10314        }
10315
10316        float getScroll() {
10317            return mScroll;
10318        }
10319
10320        float getMaxFadeScroll() {
10321            return mMaxFadeScroll;
10322        }
10323
10324        boolean shouldDrawLeftFade() {
10325            return mScroll <= mFadeStop;
10326        }
10327
10328        boolean shouldDrawGhost() {
10329            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
10330        }
10331
10332        boolean isRunning() {
10333            return mStatus == MARQUEE_RUNNING;
10334        }
10335
10336        boolean isStopped() {
10337            return mStatus == MARQUEE_STOPPED;
10338        }
10339    }
10340
10341    private class ChangeWatcher implements TextWatcher, SpanWatcher {
10342
10343        private CharSequence mBeforeText;
10344
10345        public void beforeTextChanged(CharSequence buffer, int start,
10346                                      int before, int after) {
10347            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
10348                    + " before=" + before + " after=" + after + ": " + buffer);
10349
10350            if (AccessibilityManager.getInstance(mContext).isEnabled()
10351                    && ((!isPasswordInputType(getInputType()) && !hasPasswordTransformationMethod())
10352                            || shouldSpeakPasswordsForAccessibility())) {
10353                mBeforeText = buffer.toString();
10354            }
10355
10356            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
10357        }
10358
10359        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
10360            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
10361                    + " before=" + before + " after=" + after + ": " + buffer);
10362            TextView.this.handleTextChanged(buffer, start, before, after);
10363
10364            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
10365                    (isFocused() || isSelected() && isShown())) {
10366                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
10367                mBeforeText = null;
10368            }
10369        }
10370
10371        public void afterTextChanged(Editable buffer) {
10372            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
10373            TextView.this.sendAfterTextChanged(buffer);
10374
10375            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
10376                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
10377            }
10378        }
10379
10380        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
10381            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
10382                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
10383            TextView.this.spanChange(buf, what, s, st, e, en);
10384        }
10385
10386        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
10387            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
10388                    + " what=" + what + ": " + buf);
10389            TextView.this.spanChange(buf, what, -1, s, -1, e);
10390        }
10391
10392        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
10393            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
10394                    + " what=" + what + ": " + buf);
10395            TextView.this.spanChange(buf, what, s, -1, e, -1);
10396        }
10397    }
10398}
10399