TextView.java revision 0445fdf321e74044dc9f3719922fc8ff4923fdf4 
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        /**
398         * Updates the list of displayed drawables to account for the current
399         * layout direction.
400         *
401         * @param layoutDirection the current layout direction
402         * @return {@code true} if the displayed drawables changed
403         */
404        public boolean resolveWithLayoutDirection(int layoutDirection) {
405            final Drawable previousLeft = mShowing[Drawables.LEFT];
406            final Drawable previousRight = mShowing[Drawables.RIGHT];
407
408            // First reset "left" and "right" drawables to their initial values
409            mShowing[Drawables.LEFT] = mDrawableLeftInitial;
410            mShowing[Drawables.RIGHT] = mDrawableRightInitial;
411
412            if (mIsRtlCompatibilityMode) {
413                // Use "start" drawable as "left" drawable if the "left" drawable was not defined
414                if (mDrawableStart != null && mShowing[Drawables.LEFT] == null) {
415                    mShowing[Drawables.LEFT] = mDrawableStart;
416                    mDrawableSizeLeft = mDrawableSizeStart;
417                    mDrawableHeightLeft = mDrawableHeightStart;
418                }
419                // Use "end" drawable as "right" drawable if the "right" drawable was not defined
420                if (mDrawableEnd != null && mShowing[Drawables.RIGHT] == null) {
421                    mShowing[Drawables.RIGHT] = mDrawableEnd;
422                    mDrawableSizeRight = mDrawableSizeEnd;
423                    mDrawableHeightRight = mDrawableHeightEnd;
424                }
425            } else {
426                // JB-MR1+ normal case: "start" / "end" drawables are overriding "left" / "right"
427                // drawable if and only if they have been defined
428                switch(layoutDirection) {
429                    case LAYOUT_DIRECTION_RTL:
430                        if (mOverride) {
431                            mShowing[Drawables.RIGHT] = mDrawableStart;
432                            mDrawableSizeRight = mDrawableSizeStart;
433                            mDrawableHeightRight = mDrawableHeightStart;
434
435                            mShowing[Drawables.LEFT] = mDrawableEnd;
436                            mDrawableSizeLeft = mDrawableSizeEnd;
437                            mDrawableHeightLeft = mDrawableHeightEnd;
438                        }
439                        break;
440
441                    case LAYOUT_DIRECTION_LTR:
442                    default:
443                        if (mOverride) {
444                            mShowing[Drawables.LEFT] = mDrawableStart;
445                            mDrawableSizeLeft = mDrawableSizeStart;
446                            mDrawableHeightLeft = mDrawableHeightStart;
447
448                            mShowing[Drawables.RIGHT] = mDrawableEnd;
449                            mDrawableSizeRight = mDrawableSizeEnd;
450                            mDrawableHeightRight = mDrawableHeightEnd;
451                        }
452                        break;
453                }
454            }
455
456            applyErrorDrawableIfNeeded(layoutDirection);
457
458            return mShowing[Drawables.LEFT] != previousLeft
459                    || mShowing[Drawables.RIGHT] != previousRight;
460        }
461
462        public void setErrorDrawable(Drawable dr, TextView tv) {
463            if (mDrawableError != dr && mDrawableError != null) {
464                mDrawableError.setCallback(null);
465            }
466            mDrawableError = dr;
467
468            if (mDrawableError != null) {
469                final Rect compoundRect = mCompoundRect;
470                final int[] state = tv.getDrawableState();
471
472                mDrawableError.setState(state);
473                mDrawableError.copyBounds(compoundRect);
474                mDrawableError.setCallback(tv);
475                mDrawableSizeError = compoundRect.width();
476                mDrawableHeightError = compoundRect.height();
477            } else {
478                mDrawableSizeError = mDrawableHeightError = 0;
479            }
480        }
481
482        private void applyErrorDrawableIfNeeded(int layoutDirection) {
483            // first restore the initial state if needed
484            switch (mDrawableSaved) {
485                case DRAWABLE_LEFT:
486                    mShowing[Drawables.LEFT] = mDrawableTemp;
487                    mDrawableSizeLeft = mDrawableSizeTemp;
488                    mDrawableHeightLeft = mDrawableHeightTemp;
489                    break;
490                case DRAWABLE_RIGHT:
491                    mShowing[Drawables.RIGHT] = mDrawableTemp;
492                    mDrawableSizeRight = mDrawableSizeTemp;
493                    mDrawableHeightRight = mDrawableHeightTemp;
494                    break;
495                case DRAWABLE_NONE:
496                default:
497            }
498            // then, if needed, assign the Error drawable to the correct location
499            if (mDrawableError != null) {
500                switch(layoutDirection) {
501                    case LAYOUT_DIRECTION_RTL:
502                        mDrawableSaved = DRAWABLE_LEFT;
503
504                        mDrawableTemp = mShowing[Drawables.LEFT];
505                        mDrawableSizeTemp = mDrawableSizeLeft;
506                        mDrawableHeightTemp = mDrawableHeightLeft;
507
508                        mShowing[Drawables.LEFT] = mDrawableError;
509                        mDrawableSizeLeft = mDrawableSizeError;
510                        mDrawableHeightLeft = mDrawableHeightError;
511                        break;
512                    case LAYOUT_DIRECTION_LTR:
513                    default:
514                        mDrawableSaved = DRAWABLE_RIGHT;
515
516                        mDrawableTemp = mShowing[Drawables.RIGHT];
517                        mDrawableSizeTemp = mDrawableSizeRight;
518                        mDrawableHeightTemp = mDrawableHeightRight;
519
520                        mShowing[Drawables.RIGHT] = mDrawableError;
521                        mDrawableSizeRight = mDrawableSizeError;
522                        mDrawableHeightRight = mDrawableHeightError;
523                        break;
524                }
525            }
526        }
527    }
528
529    Drawables mDrawables;
530
531    private CharWrapper mCharWrapper;
532
533    private Marquee mMarquee;
534    private boolean mRestartMarquee;
535
536    private int mMarqueeRepeatLimit = 3;
537
538    private int mLastLayoutDirection = -1;
539
540    /**
541     * On some devices the fading edges add a performance penalty if used
542     * extensively in the same layout. This mode indicates how the marquee
543     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
544     */
545    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
546
547    /**
548     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
549     * the layout that should be used when the mode switches.
550     */
551    private Layout mSavedMarqueeModeLayout;
552
553    @ViewDebug.ExportedProperty(category = "text")
554    private CharSequence mText;
555    private CharSequence mTransformed;
556    private BufferType mBufferType = BufferType.NORMAL;
557
558    private CharSequence mHint;
559    private Layout mHintLayout;
560
561    private MovementMethod mMovement;
562
563    private TransformationMethod mTransformation;
564    private boolean mAllowTransformationLengthChange;
565    private ChangeWatcher mChangeWatcher;
566
567    private ArrayList<TextWatcher> mListeners;
568
569    // display attributes
570    private final TextPaint mTextPaint;
571    private boolean mUserSetTextScaleX;
572    private Layout mLayout;
573    private boolean mLocalesChanged = false;
574
575    @ViewDebug.ExportedProperty(category = "text")
576    private int mGravity = Gravity.TOP | Gravity.START;
577    private boolean mHorizontallyScrolling;
578
579    private int mAutoLinkMask;
580    private boolean mLinksClickable = true;
581
582    private float mSpacingMult = 1.0f;
583    private float mSpacingAdd = 0.0f;
584
585    private int mBreakStrategy;
586    private int mHyphenationFrequency;
587
588    private int mMaximum = Integer.MAX_VALUE;
589    private int mMaxMode = LINES;
590    private int mMinimum = 0;
591    private int mMinMode = LINES;
592
593    private int mOldMaximum = mMaximum;
594    private int mOldMaxMode = mMaxMode;
595
596    private int mMaxWidth = Integer.MAX_VALUE;
597    private int mMaxWidthMode = PIXELS;
598    private int mMinWidth = 0;
599    private int mMinWidthMode = PIXELS;
600
601    private boolean mSingleLine;
602    private int mDesiredHeightAtMeasure = -1;
603    private boolean mIncludePad = true;
604    private int mDeferScroll = -1;
605
606    // tmp primitives, so we don't alloc them on each draw
607    private Rect mTempRect;
608    private long mLastScroll;
609    private Scroller mScroller;
610
611    private BoringLayout.Metrics mBoring, mHintBoring;
612    private BoringLayout mSavedLayout, mSavedHintLayout;
613
614    private TextDirectionHeuristic mTextDir;
615
616    private InputFilter[] mFilters = NO_FILTERS;
617
618    private volatile Locale mCurrentSpellCheckerLocaleCache;
619
620    // It is possible to have a selection even when mEditor is null (programmatically set, like when
621    // a link is pressed). These highlight-related fields do not go in mEditor.
622    int mHighlightColor = 0x6633B5E5;
623    private Path mHighlightPath;
624    private final Paint mHighlightPaint;
625    private boolean mHighlightPathBogus = true;
626
627    // Although these fields are specific to editable text, they are not added to Editor because
628    // they are defined by the TextView's style and are theme-dependent.
629    int mCursorDrawableRes;
630    // These six fields, could be moved to Editor, since we know their default values and we
631    // could condition the creation of the Editor to a non standard value. This is however
632    // brittle since the hardcoded values here (such as
633    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
634    // default style is modified.
635    int mTextSelectHandleLeftRes;
636    int mTextSelectHandleRightRes;
637    int mTextSelectHandleRes;
638    int mTextEditSuggestionItemLayout;
639    int mTextEditSuggestionContainerLayout;
640    int mTextEditSuggestionHighlightStyle;
641
642    /**
643     * EditText specific data, created on demand when one of the Editor fields is used.
644     * See {@link #createEditorIfNeeded()}.
645     */
646    private Editor mEditor;
647
648    /*
649     * Kick-start the font cache for the zygote process (to pay the cost of
650     * initializing freetype for our default font only once).
651     */
652    static {
653        Paint p = new Paint();
654        p.setAntiAlias(true);
655        // We don't care about the result, just the side-effect of measuring.
656        p.measureText("H");
657    }
658
659    /**
660     * Interface definition for a callback to be invoked when an action is
661     * performed on the editor.
662     */
663    public interface OnEditorActionListener {
664        /**
665         * Called when an action is being performed.
666         *
667         * @param v The view that was clicked.
668         * @param actionId Identifier of the action.  This will be either the
669         * identifier you supplied, or {@link EditorInfo#IME_NULL
670         * EditorInfo.IME_NULL} if being called due to the enter key
671         * being pressed.
672         * @param event If triggered by an enter key, this is the event;
673         * otherwise, this is null.
674         * @return Return true if you have consumed the action, else false.
675         */
676        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
677    }
678
679    public TextView(Context context) {
680        this(context, null);
681    }
682
683    public TextView(Context context, @Nullable AttributeSet attrs) {
684        this(context, attrs, com.android.internal.R.attr.textViewStyle);
685    }
686
687    public TextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
688        this(context, attrs, defStyleAttr, 0);
689    }
690
691    @SuppressWarnings("deprecation")
692    public TextView(
693            Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
694        super(context, attrs, defStyleAttr, defStyleRes);
695
696        mText = "";
697
698        final Resources res = getResources();
699        final CompatibilityInfo compat = res.getCompatibilityInfo();
700
701        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
702        mTextPaint.density = res.getDisplayMetrics().density;
703        mTextPaint.setCompatibilityScaling(compat.applicationScale);
704
705        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
706        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
707
708        mMovement = getDefaultMovementMethod();
709
710        mTransformation = null;
711
712        int textColorHighlight = 0;
713        ColorStateList textColor = null;
714        ColorStateList textColorHint = null;
715        ColorStateList textColorLink = null;
716        int textSize = 15;
717        String fontFamily = null;
718        boolean fontFamilyExplicit = false;
719        int typefaceIndex = -1;
720        int styleIndex = -1;
721        boolean allCaps = false;
722        int shadowcolor = 0;
723        float dx = 0, dy = 0, r = 0;
724        boolean elegant = false;
725        float letterSpacing = 0;
726        String fontFeatureSettings = null;
727        mBreakStrategy = Layout.BREAK_STRATEGY_SIMPLE;
728        mHyphenationFrequency = Layout.HYPHENATION_FREQUENCY_NONE;
729
730        final Resources.Theme theme = context.getTheme();
731
732        /*
733         * Look the appearance up without checking first if it exists because
734         * almost every TextView has one and it greatly simplifies the logic
735         * to be able to parse the appearance first and then let specific tags
736         * for this View override it.
737         */
738        TypedArray a = theme.obtainStyledAttributes(attrs,
739                com.android.internal.R.styleable.TextViewAppearance, defStyleAttr, defStyleRes);
740        TypedArray appearance = null;
741        int ap = a.getResourceId(
742                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
743        a.recycle();
744        if (ap != -1) {
745            appearance = theme.obtainStyledAttributes(
746                    ap, com.android.internal.R.styleable.TextAppearance);
747        }
748        if (appearance != null) {
749            int n = appearance.getIndexCount();
750            for (int i = 0; i < n; i++) {
751                int attr = appearance.getIndex(i);
752
753                switch (attr) {
754                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
755                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
756                    break;
757
758                case com.android.internal.R.styleable.TextAppearance_textColor:
759                    textColor = appearance.getColorStateList(attr);
760                    break;
761
762                case com.android.internal.R.styleable.TextAppearance_textColorHint:
763                    textColorHint = appearance.getColorStateList(attr);
764                    break;
765
766                case com.android.internal.R.styleable.TextAppearance_textColorLink:
767                    textColorLink = appearance.getColorStateList(attr);
768                    break;
769
770                case com.android.internal.R.styleable.TextAppearance_textSize:
771                    textSize = appearance.getDimensionPixelSize(attr, textSize);
772                    break;
773
774                case com.android.internal.R.styleable.TextAppearance_typeface:
775                    typefaceIndex = appearance.getInt(attr, -1);
776                    break;
777
778                case com.android.internal.R.styleable.TextAppearance_fontFamily:
779                    fontFamily = appearance.getString(attr);
780                    break;
781
782                case com.android.internal.R.styleable.TextAppearance_textStyle:
783                    styleIndex = appearance.getInt(attr, -1);
784                    break;
785
786                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
787                    allCaps = appearance.getBoolean(attr, false);
788                    break;
789
790                case com.android.internal.R.styleable.TextAppearance_shadowColor:
791                    shadowcolor = appearance.getInt(attr, 0);
792                    break;
793
794                case com.android.internal.R.styleable.TextAppearance_shadowDx:
795                    dx = appearance.getFloat(attr, 0);
796                    break;
797
798                case com.android.internal.R.styleable.TextAppearance_shadowDy:
799                    dy = appearance.getFloat(attr, 0);
800                    break;
801
802                case com.android.internal.R.styleable.TextAppearance_shadowRadius:
803                    r = appearance.getFloat(attr, 0);
804                    break;
805
806                case com.android.internal.R.styleable.TextAppearance_elegantTextHeight:
807                    elegant = appearance.getBoolean(attr, false);
808                    break;
809
810                case com.android.internal.R.styleable.TextAppearance_letterSpacing:
811                    letterSpacing = appearance.getFloat(attr, 0);
812                    break;
813
814                case com.android.internal.R.styleable.TextAppearance_fontFeatureSettings:
815                    fontFeatureSettings = appearance.getString(attr);
816                    break;
817                }
818            }
819
820            appearance.recycle();
821        }
822
823        boolean editable = getDefaultEditable();
824        CharSequence inputMethod = null;
825        int numeric = 0;
826        CharSequence digits = null;
827        boolean phone = false;
828        boolean autotext = false;
829        int autocap = -1;
830        int buffertype = 0;
831        boolean selectallonfocus = false;
832        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
833            drawableBottom = null, drawableStart = null, drawableEnd = null;
834        ColorStateList drawableTint = null;
835        PorterDuff.Mode drawableTintMode = null;
836        int drawablePadding = 0;
837        int ellipsize = -1;
838        boolean singleLine = false;
839        int maxlength = -1;
840        CharSequence text = "";
841        CharSequence hint = null;
842        boolean password = false;
843        int inputType = EditorInfo.TYPE_NULL;
844
845        a = theme.obtainStyledAttributes(
846                    attrs, com.android.internal.R.styleable.TextView, defStyleAttr, defStyleRes);
847
848        int n = a.getIndexCount();
849        for (int i = 0; i < n; i++) {
850            int attr = a.getIndex(i);
851
852            switch (attr) {
853            case com.android.internal.R.styleable.TextView_editable:
854                editable = a.getBoolean(attr, editable);
855                break;
856
857            case com.android.internal.R.styleable.TextView_inputMethod:
858                inputMethod = a.getText(attr);
859                break;
860
861            case com.android.internal.R.styleable.TextView_numeric:
862                numeric = a.getInt(attr, numeric);
863                break;
864
865            case com.android.internal.R.styleable.TextView_digits:
866                digits = a.getText(attr);
867                break;
868
869            case com.android.internal.R.styleable.TextView_phoneNumber:
870                phone = a.getBoolean(attr, phone);
871                break;
872
873            case com.android.internal.R.styleable.TextView_autoText:
874                autotext = a.getBoolean(attr, autotext);
875                break;
876
877            case com.android.internal.R.styleable.TextView_capitalize:
878                autocap = a.getInt(attr, autocap);
879                break;
880
881            case com.android.internal.R.styleable.TextView_bufferType:
882                buffertype = a.getInt(attr, buffertype);
883                break;
884
885            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
886                selectallonfocus = a.getBoolean(attr, selectallonfocus);
887                break;
888
889            case com.android.internal.R.styleable.TextView_autoLink:
890                mAutoLinkMask = a.getInt(attr, 0);
891                break;
892
893            case com.android.internal.R.styleable.TextView_linksClickable:
894                mLinksClickable = a.getBoolean(attr, true);
895                break;
896
897            case com.android.internal.R.styleable.TextView_drawableLeft:
898                drawableLeft = a.getDrawable(attr);
899                break;
900
901            case com.android.internal.R.styleable.TextView_drawableTop:
902                drawableTop = a.getDrawable(attr);
903                break;
904
905            case com.android.internal.R.styleable.TextView_drawableRight:
906                drawableRight = a.getDrawable(attr);
907                break;
908
909            case com.android.internal.R.styleable.TextView_drawableBottom:
910                drawableBottom = a.getDrawable(attr);
911                break;
912
913            case com.android.internal.R.styleable.TextView_drawableStart:
914                drawableStart = a.getDrawable(attr);
915                break;
916
917            case com.android.internal.R.styleable.TextView_drawableEnd:
918                drawableEnd = a.getDrawable(attr);
919                break;
920
921            case com.android.internal.R.styleable.TextView_drawableTint:
922                drawableTint = a.getColorStateList(attr);
923                break;
924
925            case com.android.internal.R.styleable.TextView_drawableTintMode:
926                drawableTintMode = Drawable.parseTintMode(a.getInt(attr, -1), drawableTintMode);
927                break;
928
929            case com.android.internal.R.styleable.TextView_drawablePadding:
930                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
931                break;
932
933            case com.android.internal.R.styleable.TextView_maxLines:
934                setMaxLines(a.getInt(attr, -1));
935                break;
936
937            case com.android.internal.R.styleable.TextView_maxHeight:
938                setMaxHeight(a.getDimensionPixelSize(attr, -1));
939                break;
940
941            case com.android.internal.R.styleable.TextView_lines:
942                setLines(a.getInt(attr, -1));
943                break;
944
945            case com.android.internal.R.styleable.TextView_height:
946                setHeight(a.getDimensionPixelSize(attr, -1));
947                break;
948
949            case com.android.internal.R.styleable.TextView_minLines:
950                setMinLines(a.getInt(attr, -1));
951                break;
952
953            case com.android.internal.R.styleable.TextView_minHeight:
954                setMinHeight(a.getDimensionPixelSize(attr, -1));
955                break;
956
957            case com.android.internal.R.styleable.TextView_maxEms:
958                setMaxEms(a.getInt(attr, -1));
959                break;
960
961            case com.android.internal.R.styleable.TextView_maxWidth:
962                setMaxWidth(a.getDimensionPixelSize(attr, -1));
963                break;
964
965            case com.android.internal.R.styleable.TextView_ems:
966                setEms(a.getInt(attr, -1));
967                break;
968
969            case com.android.internal.R.styleable.TextView_width:
970                setWidth(a.getDimensionPixelSize(attr, -1));
971                break;
972
973            case com.android.internal.R.styleable.TextView_minEms:
974                setMinEms(a.getInt(attr, -1));
975                break;
976
977            case com.android.internal.R.styleable.TextView_minWidth:
978                setMinWidth(a.getDimensionPixelSize(attr, -1));
979                break;
980
981            case com.android.internal.R.styleable.TextView_gravity:
982                setGravity(a.getInt(attr, -1));
983                break;
984
985            case com.android.internal.R.styleable.TextView_hint:
986                hint = a.getText(attr);
987                break;
988
989            case com.android.internal.R.styleable.TextView_text:
990                text = a.getText(attr);
991                break;
992
993            case com.android.internal.R.styleable.TextView_scrollHorizontally:
994                if (a.getBoolean(attr, false)) {
995                    setHorizontallyScrolling(true);
996                }
997                break;
998
999            case com.android.internal.R.styleable.TextView_singleLine:
1000                singleLine = a.getBoolean(attr, singleLine);
1001                break;
1002
1003            case com.android.internal.R.styleable.TextView_ellipsize:
1004                ellipsize = a.getInt(attr, ellipsize);
1005                break;
1006
1007            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
1008                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
1009                break;
1010
1011            case com.android.internal.R.styleable.TextView_includeFontPadding:
1012                if (!a.getBoolean(attr, true)) {
1013                    setIncludeFontPadding(false);
1014                }
1015                break;
1016
1017            case com.android.internal.R.styleable.TextView_cursorVisible:
1018                if (!a.getBoolean(attr, true)) {
1019                    setCursorVisible(false);
1020                }
1021                break;
1022
1023            case com.android.internal.R.styleable.TextView_maxLength:
1024                maxlength = a.getInt(attr, -1);
1025                break;
1026
1027            case com.android.internal.R.styleable.TextView_textScaleX:
1028                setTextScaleX(a.getFloat(attr, 1.0f));
1029                break;
1030
1031            case com.android.internal.R.styleable.TextView_freezesText:
1032                mFreezesText = a.getBoolean(attr, false);
1033                break;
1034
1035            case com.android.internal.R.styleable.TextView_shadowColor:
1036                shadowcolor = a.getInt(attr, 0);
1037                break;
1038
1039            case com.android.internal.R.styleable.TextView_shadowDx:
1040                dx = a.getFloat(attr, 0);
1041                break;
1042
1043            case com.android.internal.R.styleable.TextView_shadowDy:
1044                dy = a.getFloat(attr, 0);
1045                break;
1046
1047            case com.android.internal.R.styleable.TextView_shadowRadius:
1048                r = a.getFloat(attr, 0);
1049                break;
1050
1051            case com.android.internal.R.styleable.TextView_enabled:
1052                setEnabled(a.getBoolean(attr, isEnabled()));
1053                break;
1054
1055            case com.android.internal.R.styleable.TextView_textColorHighlight:
1056                textColorHighlight = a.getColor(attr, textColorHighlight);
1057                break;
1058
1059            case com.android.internal.R.styleable.TextView_textColor:
1060                textColor = a.getColorStateList(attr);
1061                break;
1062
1063            case com.android.internal.R.styleable.TextView_textColorHint:
1064                textColorHint = a.getColorStateList(attr);
1065                break;
1066
1067            case com.android.internal.R.styleable.TextView_textColorLink:
1068                textColorLink = a.getColorStateList(attr);
1069                break;
1070
1071            case com.android.internal.R.styleable.TextView_textSize:
1072                textSize = a.getDimensionPixelSize(attr, textSize);
1073                break;
1074
1075            case com.android.internal.R.styleable.TextView_typeface:
1076                typefaceIndex = a.getInt(attr, typefaceIndex);
1077                break;
1078
1079            case com.android.internal.R.styleable.TextView_textStyle:
1080                styleIndex = a.getInt(attr, styleIndex);
1081                break;
1082
1083            case com.android.internal.R.styleable.TextView_fontFamily:
1084                fontFamily = a.getString(attr);
1085                fontFamilyExplicit = true;
1086                break;
1087
1088            case com.android.internal.R.styleable.TextView_password:
1089                password = a.getBoolean(attr, password);
1090                break;
1091
1092            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
1093                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
1094                break;
1095
1096            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
1097                mSpacingMult = a.getFloat(attr, mSpacingMult);
1098                break;
1099
1100            case com.android.internal.R.styleable.TextView_inputType:
1101                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
1102                break;
1103
1104            case com.android.internal.R.styleable.TextView_allowUndo:
1105                createEditorIfNeeded();
1106                mEditor.mAllowUndo = a.getBoolean(attr, true);
1107                break;
1108
1109            case com.android.internal.R.styleable.TextView_imeOptions:
1110                createEditorIfNeeded();
1111                mEditor.createInputContentTypeIfNeeded();
1112                mEditor.mInputContentType.imeOptions = a.getInt(attr,
1113                        mEditor.mInputContentType.imeOptions);
1114                break;
1115
1116            case com.android.internal.R.styleable.TextView_imeActionLabel:
1117                createEditorIfNeeded();
1118                mEditor.createInputContentTypeIfNeeded();
1119                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
1120                break;
1121
1122            case com.android.internal.R.styleable.TextView_imeActionId:
1123                createEditorIfNeeded();
1124                mEditor.createInputContentTypeIfNeeded();
1125                mEditor.mInputContentType.imeActionId = a.getInt(attr,
1126                        mEditor.mInputContentType.imeActionId);
1127                break;
1128
1129            case com.android.internal.R.styleable.TextView_privateImeOptions:
1130                setPrivateImeOptions(a.getString(attr));
1131                break;
1132
1133            case com.android.internal.R.styleable.TextView_editorExtras:
1134                try {
1135                    setInputExtras(a.getResourceId(attr, 0));
1136                } catch (XmlPullParserException e) {
1137                    Log.w(LOG_TAG, "Failure reading input extras", e);
1138                } catch (IOException e) {
1139                    Log.w(LOG_TAG, "Failure reading input extras", e);
1140                }
1141                break;
1142
1143            case com.android.internal.R.styleable.TextView_textCursorDrawable:
1144                mCursorDrawableRes = a.getResourceId(attr, 0);
1145                break;
1146
1147            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
1148                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
1149                break;
1150
1151            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
1152                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
1153                break;
1154
1155            case com.android.internal.R.styleable.TextView_textSelectHandle:
1156                mTextSelectHandleRes = a.getResourceId(attr, 0);
1157                break;
1158
1159            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
1160                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
1161                break;
1162
1163            case com.android.internal.R.styleable.TextView_textEditSuggestionContainerLayout:
1164                mTextEditSuggestionContainerLayout = a.getResourceId(attr, 0);
1165                break;
1166
1167            case com.android.internal.R.styleable.TextView_textEditSuggestionHighlightStyle:
1168                mTextEditSuggestionHighlightStyle = a.getResourceId(attr, 0);
1169                break;
1170
1171            case com.android.internal.R.styleable.TextView_textIsSelectable:
1172                setTextIsSelectable(a.getBoolean(attr, false));
1173                break;
1174
1175            case com.android.internal.R.styleable.TextView_textAllCaps:
1176                allCaps = a.getBoolean(attr, false);
1177                break;
1178
1179            case com.android.internal.R.styleable.TextView_elegantTextHeight:
1180                elegant = a.getBoolean(attr, false);
1181                break;
1182
1183            case com.android.internal.R.styleable.TextView_letterSpacing:
1184                letterSpacing = a.getFloat(attr, 0);
1185                break;
1186
1187            case com.android.internal.R.styleable.TextView_fontFeatureSettings:
1188                fontFeatureSettings = a.getString(attr);
1189                break;
1190
1191            case com.android.internal.R.styleable.TextView_breakStrategy:
1192                mBreakStrategy = a.getInt(attr, Layout.BREAK_STRATEGY_SIMPLE);
1193                break;
1194
1195            case com.android.internal.R.styleable.TextView_hyphenationFrequency:
1196                mHyphenationFrequency = a.getInt(attr, Layout.HYPHENATION_FREQUENCY_NONE);
1197                break;
1198            }
1199        }
1200        a.recycle();
1201
1202        BufferType bufferType = BufferType.EDITABLE;
1203
1204        final int variation =
1205                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
1206        final boolean passwordInputType = variation
1207                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
1208        final boolean webPasswordInputType = variation
1209                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
1210        final boolean numberPasswordInputType = variation
1211                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
1212
1213        if (inputMethod != null) {
1214            Class<?> c;
1215
1216            try {
1217                c = Class.forName(inputMethod.toString());
1218            } catch (ClassNotFoundException ex) {
1219                throw new RuntimeException(ex);
1220            }
1221
1222            try {
1223                createEditorIfNeeded();
1224                mEditor.mKeyListener = (KeyListener) c.newInstance();
1225            } catch (InstantiationException ex) {
1226                throw new RuntimeException(ex);
1227            } catch (IllegalAccessException ex) {
1228                throw new RuntimeException(ex);
1229            }
1230            try {
1231                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1232                        ? inputType
1233                        : mEditor.mKeyListener.getInputType();
1234            } catch (IncompatibleClassChangeError e) {
1235                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1236            }
1237        } else if (digits != null) {
1238            createEditorIfNeeded();
1239            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
1240            // If no input type was specified, we will default to generic
1241            // text, since we can't tell the IME about the set of digits
1242            // that was selected.
1243            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1244                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
1245        } else if (inputType != EditorInfo.TYPE_NULL) {
1246            setInputType(inputType, true);
1247            // If set, the input type overrides what was set using the deprecated singleLine flag.
1248            singleLine = !isMultilineInputType(inputType);
1249        } else if (phone) {
1250            createEditorIfNeeded();
1251            mEditor.mKeyListener = DialerKeyListener.getInstance();
1252            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
1253        } else if (numeric != 0) {
1254            createEditorIfNeeded();
1255            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
1256                                                   (numeric & DECIMAL) != 0);
1257            inputType = EditorInfo.TYPE_CLASS_NUMBER;
1258            if ((numeric & SIGNED) != 0) {
1259                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
1260            }
1261            if ((numeric & DECIMAL) != 0) {
1262                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
1263            }
1264            mEditor.mInputType = inputType;
1265        } else if (autotext || autocap != -1) {
1266            TextKeyListener.Capitalize cap;
1267
1268            inputType = EditorInfo.TYPE_CLASS_TEXT;
1269
1270            switch (autocap) {
1271            case 1:
1272                cap = TextKeyListener.Capitalize.SENTENCES;
1273                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
1274                break;
1275
1276            case 2:
1277                cap = TextKeyListener.Capitalize.WORDS;
1278                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
1279                break;
1280
1281            case 3:
1282                cap = TextKeyListener.Capitalize.CHARACTERS;
1283                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
1284                break;
1285
1286            default:
1287                cap = TextKeyListener.Capitalize.NONE;
1288                break;
1289            }
1290
1291            createEditorIfNeeded();
1292            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
1293            mEditor.mInputType = inputType;
1294        } else if (isTextSelectable()) {
1295            // Prevent text changes from keyboard.
1296            if (mEditor != null) {
1297                mEditor.mKeyListener = null;
1298                mEditor.mInputType = EditorInfo.TYPE_NULL;
1299            }
1300            bufferType = BufferType.SPANNABLE;
1301            // So that selection can be changed using arrow keys and touch is handled.
1302            setMovementMethod(ArrowKeyMovementMethod.getInstance());
1303        } else if (editable) {
1304            createEditorIfNeeded();
1305            mEditor.mKeyListener = TextKeyListener.getInstance();
1306            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1307        } else {
1308            if (mEditor != null) mEditor.mKeyListener = null;
1309
1310            switch (buffertype) {
1311                case 0:
1312                    bufferType = BufferType.NORMAL;
1313                    break;
1314                case 1:
1315                    bufferType = BufferType.SPANNABLE;
1316                    break;
1317                case 2:
1318                    bufferType = BufferType.EDITABLE;
1319                    break;
1320            }
1321        }
1322
1323        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
1324                webPasswordInputType, numberPasswordInputType);
1325
1326        if (selectallonfocus) {
1327            createEditorIfNeeded();
1328            mEditor.mSelectAllOnFocus = true;
1329
1330            if (bufferType == BufferType.NORMAL)
1331                bufferType = BufferType.SPANNABLE;
1332        }
1333
1334        // Set up the tint (if needed) before setting the drawables so that it
1335        // gets applied correctly.
1336        if (drawableTint != null || drawableTintMode != null) {
1337            if (mDrawables == null) {
1338                mDrawables = new Drawables(context);
1339            }
1340            if (drawableTint != null) {
1341                mDrawables.mTintList = drawableTint;
1342                mDrawables.mHasTint = true;
1343            }
1344            if (drawableTintMode != null) {
1345                mDrawables.mTintMode = drawableTintMode;
1346                mDrawables.mHasTintMode = true;
1347            }
1348        }
1349
1350        // This call will save the initial left/right drawables
1351        setCompoundDrawablesWithIntrinsicBounds(
1352            drawableLeft, drawableTop, drawableRight, drawableBottom);
1353        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1354        setCompoundDrawablePadding(drawablePadding);
1355
1356        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1357        // of lines of height are unchanged for multi-line TextViews.
1358        setInputTypeSingleLine(singleLine);
1359        applySingleLine(singleLine, singleLine, singleLine);
1360
1361        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1362                ellipsize = 3; // END
1363        }
1364
1365        switch (ellipsize) {
1366            case 1:
1367                setEllipsize(TextUtils.TruncateAt.START);
1368                break;
1369            case 2:
1370                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1371                break;
1372            case 3:
1373                setEllipsize(TextUtils.TruncateAt.END);
1374                break;
1375            case 4:
1376                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1377                    setHorizontalFadingEdgeEnabled(true);
1378                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1379                } else {
1380                    setHorizontalFadingEdgeEnabled(false);
1381                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1382                }
1383                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1384                break;
1385        }
1386
1387        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1388        setHintTextColor(textColorHint);
1389        setLinkTextColor(textColorLink);
1390        if (textColorHighlight != 0) {
1391            setHighlightColor(textColorHighlight);
1392        }
1393        setRawTextSize(textSize);
1394        setElegantTextHeight(elegant);
1395        setLetterSpacing(letterSpacing);
1396        setFontFeatureSettings(fontFeatureSettings);
1397
1398        if (allCaps) {
1399            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1400        }
1401
1402        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1403            setTransformationMethod(PasswordTransformationMethod.getInstance());
1404            typefaceIndex = MONOSPACE;
1405        } else if (mEditor != null &&
1406                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1407                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1408            typefaceIndex = MONOSPACE;
1409        }
1410
1411        if (typefaceIndex != -1 && !fontFamilyExplicit) {
1412            fontFamily = null;
1413        }
1414        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1415
1416        if (shadowcolor != 0) {
1417            setShadowLayer(r, dx, dy, shadowcolor);
1418        }
1419
1420        if (maxlength >= 0) {
1421            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1422        } else {
1423            setFilters(NO_FILTERS);
1424        }
1425
1426        setText(text, bufferType);
1427        if (hint != null) setHint(hint);
1428
1429        /*
1430         * Views are not normally focusable unless specified to be.
1431         * However, TextViews that have input or movement methods *are*
1432         * focusable by default.
1433         */
1434        a = context.obtainStyledAttributes(
1435                attrs, com.android.internal.R.styleable.View, defStyleAttr, defStyleRes);
1436
1437        boolean focusable = mMovement != null || getKeyListener() != null;
1438        boolean clickable = focusable || isClickable();
1439        boolean longClickable = focusable || isLongClickable();
1440
1441        n = a.getIndexCount();
1442        for (int i = 0; i < n; i++) {
1443            int attr = a.getIndex(i);
1444
1445            switch (attr) {
1446            case com.android.internal.R.styleable.View_focusable:
1447                focusable = a.getBoolean(attr, focusable);
1448                break;
1449
1450            case com.android.internal.R.styleable.View_clickable:
1451                clickable = a.getBoolean(attr, clickable);
1452                break;
1453
1454            case com.android.internal.R.styleable.View_longClickable:
1455                longClickable = a.getBoolean(attr, longClickable);
1456                break;
1457            }
1458        }
1459        a.recycle();
1460
1461        setFocusable(focusable);
1462        setClickable(clickable);
1463        setLongClickable(longClickable);
1464
1465        if (mEditor != null) mEditor.prepareCursorControllers();
1466
1467        // If not explicitly specified this view is important for accessibility.
1468        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1469            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1470        }
1471    }
1472
1473    private int[] parseDimensionArray(TypedArray dimens) {
1474        if (dimens == null) {
1475            return null;
1476        }
1477        int[] result = new int[dimens.length()];
1478        for (int i = 0; i < result.length; i++) {
1479            result[i] = dimens.getDimensionPixelSize(i, 0);
1480        }
1481        return result;
1482    }
1483
1484    /**
1485     * @hide
1486     */
1487    @Override
1488    public void onActivityResult(int requestCode, int resultCode, Intent data) {
1489        if (requestCode == PROCESS_TEXT_REQUEST_CODE) {
1490            if (resultCode == Activity.RESULT_OK && data != null) {
1491                CharSequence result = data.getCharSequenceExtra(Intent.EXTRA_PROCESS_TEXT);
1492                if (result != null) {
1493                    if (isTextEditable()) {
1494                        replaceSelectionWithText(result);
1495                    } else {
1496                        if (result.length() > 0) {
1497                            Toast.makeText(getContext(), String.valueOf(result), Toast.LENGTH_LONG)
1498                                .show();
1499                        }
1500                    }
1501                }
1502            } else if (mText instanceof Spannable) {
1503                // Reset the selection.
1504                stopTextActionMode();
1505                Selection.setSelection((Spannable) mText, getSelectionStart(), getSelectionEnd());
1506            }
1507
1508            if (mEditor.hasSelectionController()) {
1509                mEditor.startSelectionActionMode();
1510            }
1511        }
1512    }
1513
1514    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1515        Typeface tf = null;
1516        if (familyName != null) {
1517            tf = Typeface.create(familyName, styleIndex);
1518            if (tf != null) {
1519                setTypeface(tf);
1520                return;
1521            }
1522        }
1523        switch (typefaceIndex) {
1524            case SANS:
1525                tf = Typeface.SANS_SERIF;
1526                break;
1527
1528            case SERIF:
1529                tf = Typeface.SERIF;
1530                break;
1531
1532            case MONOSPACE:
1533                tf = Typeface.MONOSPACE;
1534                break;
1535        }
1536
1537        setTypeface(tf, styleIndex);
1538    }
1539
1540    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1541        boolean hasRelativeDrawables = (start != null) || (end != null);
1542        if (hasRelativeDrawables) {
1543            Drawables dr = mDrawables;
1544            if (dr == null) {
1545                mDrawables = dr = new Drawables(getContext());
1546            }
1547            mDrawables.mOverride = true;
1548            final Rect compoundRect = dr.mCompoundRect;
1549            int[] state = getDrawableState();
1550            if (start != null) {
1551                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1552                start.setState(state);
1553                start.copyBounds(compoundRect);
1554                start.setCallback(this);
1555
1556                dr.mDrawableStart = start;
1557                dr.mDrawableSizeStart = compoundRect.width();
1558                dr.mDrawableHeightStart = compoundRect.height();
1559            } else {
1560                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1561            }
1562            if (end != null) {
1563                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1564                end.setState(state);
1565                end.copyBounds(compoundRect);
1566                end.setCallback(this);
1567
1568                dr.mDrawableEnd = end;
1569                dr.mDrawableSizeEnd = compoundRect.width();
1570                dr.mDrawableHeightEnd = compoundRect.height();
1571            } else {
1572                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1573            }
1574            resetResolvedDrawables();
1575            resolveDrawables();
1576            applyCompoundDrawableTint();
1577        }
1578    }
1579
1580    @Override
1581    public void setEnabled(boolean enabled) {
1582        if (enabled == isEnabled()) {
1583            return;
1584        }
1585
1586        if (!enabled) {
1587            // Hide the soft input if the currently active TextView is disabled
1588            InputMethodManager imm = InputMethodManager.peekInstance();
1589            if (imm != null && imm.isActive(this)) {
1590                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1591            }
1592        }
1593
1594        super.setEnabled(enabled);
1595
1596        if (enabled) {
1597            // Make sure IME is updated with current editor info.
1598            InputMethodManager imm = InputMethodManager.peekInstance();
1599            if (imm != null) imm.restartInput(this);
1600        }
1601
1602        // Will change text color
1603        if (mEditor != null) {
1604            mEditor.invalidateTextDisplayList();
1605            mEditor.prepareCursorControllers();
1606
1607            // start or stop the cursor blinking as appropriate
1608            mEditor.makeBlink();
1609        }
1610    }
1611
1612    /**
1613     * Sets the typeface and style in which the text should be displayed,
1614     * and turns on the fake bold and italic bits in the Paint if the
1615     * Typeface that you provided does not have all the bits in the
1616     * style that you specified.
1617     *
1618     * @attr ref android.R.styleable#TextView_typeface
1619     * @attr ref android.R.styleable#TextView_textStyle
1620     */
1621    public void setTypeface(Typeface tf, int style) {
1622        if (style > 0) {
1623            if (tf == null) {
1624                tf = Typeface.defaultFromStyle(style);
1625            } else {
1626                tf = Typeface.create(tf, style);
1627            }
1628
1629            setTypeface(tf);
1630            // now compute what (if any) algorithmic styling is needed
1631            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1632            int need = style & ~typefaceStyle;
1633            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1634            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1635        } else {
1636            mTextPaint.setFakeBoldText(false);
1637            mTextPaint.setTextSkewX(0);
1638            setTypeface(tf);
1639        }
1640    }
1641
1642    /**
1643     * Subclasses override this to specify that they have a KeyListener
1644     * by default even if not specifically called for in the XML options.
1645     */
1646    protected boolean getDefaultEditable() {
1647        return false;
1648    }
1649
1650    /**
1651     * Subclasses override this to specify a default movement method.
1652     */
1653    protected MovementMethod getDefaultMovementMethod() {
1654        return null;
1655    }
1656
1657    /**
1658     * Return the text the TextView is displaying. If setText() was called with
1659     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1660     * the return value from this method to Spannable or Editable, respectively.
1661     *
1662     * Note: The content of the return value should not be modified. If you want
1663     * a modifiable one, you should make your own copy first.
1664     *
1665     * @attr ref android.R.styleable#TextView_text
1666     */
1667    @ViewDebug.CapturedViewProperty
1668    public CharSequence getText() {
1669        return mText;
1670    }
1671
1672    /**
1673     * Returns the length, in characters, of the text managed by this TextView
1674     */
1675    public int length() {
1676        return mText.length();
1677    }
1678
1679    /**
1680     * Return the text the TextView is displaying as an Editable object.  If
1681     * the text is not editable, null is returned.
1682     *
1683     * @see #getText
1684     */
1685    public Editable getEditableText() {
1686        return (mText instanceof Editable) ? (Editable)mText : null;
1687    }
1688
1689    /**
1690     * @return the height of one standard line in pixels.  Note that markup
1691     * within the text can cause individual lines to be taller or shorter
1692     * than this height, and the layout may contain additional first-
1693     * or last-line padding.
1694     */
1695    public int getLineHeight() {
1696        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1697    }
1698
1699    /**
1700     * @return the Layout that is currently being used to display the text.
1701     * This can be null if the text or width has recently changes.
1702     */
1703    public final Layout getLayout() {
1704        return mLayout;
1705    }
1706
1707    /**
1708     * @return the Layout that is currently being used to display the hint text.
1709     * This can be null.
1710     */
1711    final Layout getHintLayout() {
1712        return mHintLayout;
1713    }
1714
1715    /**
1716     * Retrieve the {@link android.content.UndoManager} that is currently associated
1717     * with this TextView.  By default there is no associated UndoManager, so null
1718     * is returned.  One can be associated with the TextView through
1719     * {@link #setUndoManager(android.content.UndoManager, String)}
1720     *
1721     * @hide
1722     */
1723    public final UndoManager getUndoManager() {
1724        // TODO: Consider supporting a global undo manager.
1725        throw new UnsupportedOperationException("not implemented");
1726    }
1727
1728
1729    /**
1730     * @hide
1731     */
1732    @VisibleForTesting
1733    public final Editor getEditorForTesting() {
1734        return mEditor;
1735    }
1736
1737    /**
1738     * Associate an {@link android.content.UndoManager} with this TextView.  Once
1739     * done, all edit operations on the TextView will result in appropriate
1740     * {@link android.content.UndoOperation} objects pushed on the given UndoManager's
1741     * stack.
1742     *
1743     * @param undoManager The {@link android.content.UndoManager} to associate with
1744     * this TextView, or null to clear any existing association.
1745     * @param tag String tag identifying this particular TextView owner in the
1746     * UndoManager.  This is used to keep the correct association with the
1747     * {@link android.content.UndoOwner} of any operations inside of the UndoManager.
1748     *
1749     * @hide
1750     */
1751    public final void setUndoManager(UndoManager undoManager, String tag) {
1752        // TODO: Consider supporting a global undo manager. An implementation will need to:
1753        // * createEditorIfNeeded()
1754        // * Promote to BufferType.EDITABLE if needed.
1755        // * Update the UndoManager and UndoOwner.
1756        // Likewise it will need to be able to restore the default UndoManager.
1757        throw new UnsupportedOperationException("not implemented");
1758    }
1759
1760    /**
1761     * @return the current key listener for this TextView.
1762     * This will frequently be null for non-EditText TextViews.
1763     *
1764     * @attr ref android.R.styleable#TextView_numeric
1765     * @attr ref android.R.styleable#TextView_digits
1766     * @attr ref android.R.styleable#TextView_phoneNumber
1767     * @attr ref android.R.styleable#TextView_inputMethod
1768     * @attr ref android.R.styleable#TextView_capitalize
1769     * @attr ref android.R.styleable#TextView_autoText
1770     */
1771    public final KeyListener getKeyListener() {
1772        return mEditor == null ? null : mEditor.mKeyListener;
1773    }
1774
1775    /**
1776     * Sets the key listener to be used with this TextView.  This can be null
1777     * to disallow user input.  Note that this method has significant and
1778     * subtle interactions with soft keyboards and other input method:
1779     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1780     * for important details.  Calling this method will replace the current
1781     * content type of the text view with the content type returned by the
1782     * key listener.
1783     * <p>
1784     * Be warned that if you want a TextView with a key listener or movement
1785     * method not to be focusable, or if you want a TextView without a
1786     * key listener or movement method to be focusable, you must call
1787     * {@link #setFocusable} again after calling this to get the focusability
1788     * back the way you want it.
1789     *
1790     * @attr ref android.R.styleable#TextView_numeric
1791     * @attr ref android.R.styleable#TextView_digits
1792     * @attr ref android.R.styleable#TextView_phoneNumber
1793     * @attr ref android.R.styleable#TextView_inputMethod
1794     * @attr ref android.R.styleable#TextView_capitalize
1795     * @attr ref android.R.styleable#TextView_autoText
1796     */
1797    public void setKeyListener(KeyListener input) {
1798        setKeyListenerOnly(input);
1799        fixFocusableAndClickableSettings();
1800
1801        if (input != null) {
1802            createEditorIfNeeded();
1803            try {
1804                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1805            } catch (IncompatibleClassChangeError e) {
1806                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1807            }
1808            // Change inputType, without affecting transformation.
1809            // No need to applySingleLine since mSingleLine is unchanged.
1810            setInputTypeSingleLine(mSingleLine);
1811        } else {
1812            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1813        }
1814
1815        InputMethodManager imm = InputMethodManager.peekInstance();
1816        if (imm != null) imm.restartInput(this);
1817    }
1818
1819    private void setKeyListenerOnly(KeyListener input) {
1820        if (mEditor == null && input == null) return; // null is the default value
1821
1822        createEditorIfNeeded();
1823        if (mEditor.mKeyListener != input) {
1824            mEditor.mKeyListener = input;
1825            if (input != null && !(mText instanceof Editable)) {
1826                setText(mText);
1827            }
1828
1829            setFilters((Editable) mText, mFilters);
1830        }
1831    }
1832
1833    /**
1834     * @return the movement method being used for this TextView.
1835     * This will frequently be null for non-EditText TextViews.
1836     */
1837    public final MovementMethod getMovementMethod() {
1838        return mMovement;
1839    }
1840
1841    /**
1842     * Sets the movement method (arrow key handler) to be used for
1843     * this TextView.  This can be null to disallow using the arrow keys
1844     * to move the cursor or scroll the view.
1845     * <p>
1846     * Be warned that if you want a TextView with a key listener or movement
1847     * method not to be focusable, or if you want a TextView without a
1848     * key listener or movement method to be focusable, you must call
1849     * {@link #setFocusable} again after calling this to get the focusability
1850     * back the way you want it.
1851     */
1852    public final void setMovementMethod(MovementMethod movement) {
1853        if (mMovement != movement) {
1854            mMovement = movement;
1855
1856            if (movement != null && !(mText instanceof Spannable)) {
1857                setText(mText);
1858            }
1859
1860            fixFocusableAndClickableSettings();
1861
1862            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1863            // mMovement
1864            if (mEditor != null) mEditor.prepareCursorControllers();
1865        }
1866    }
1867
1868    private void fixFocusableAndClickableSettings() {
1869        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1870            setFocusable(true);
1871            setClickable(true);
1872            setLongClickable(true);
1873        } else {
1874            setFocusable(false);
1875            setClickable(false);
1876            setLongClickable(false);
1877        }
1878    }
1879
1880    /**
1881     * @return the current transformation method for this TextView.
1882     * This will frequently be null except for single-line and password
1883     * fields.
1884     *
1885     * @attr ref android.R.styleable#TextView_password
1886     * @attr ref android.R.styleable#TextView_singleLine
1887     */
1888    public final TransformationMethod getTransformationMethod() {
1889        return mTransformation;
1890    }
1891
1892    /**
1893     * Sets the transformation that is applied to the text that this
1894     * TextView is displaying.
1895     *
1896     * @attr ref android.R.styleable#TextView_password
1897     * @attr ref android.R.styleable#TextView_singleLine
1898     */
1899    public final void setTransformationMethod(TransformationMethod method) {
1900        if (method == mTransformation) {
1901            // Avoid the setText() below if the transformation is
1902            // the same.
1903            return;
1904        }
1905        if (mTransformation != null) {
1906            if (mText instanceof Spannable) {
1907                ((Spannable) mText).removeSpan(mTransformation);
1908            }
1909        }
1910
1911        mTransformation = method;
1912
1913        if (method instanceof TransformationMethod2) {
1914            TransformationMethod2 method2 = (TransformationMethod2) method;
1915            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1916            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1917        } else {
1918            mAllowTransformationLengthChange = false;
1919        }
1920
1921        setText(mText);
1922
1923        if (hasPasswordTransformationMethod()) {
1924            notifyViewAccessibilityStateChangedIfNeeded(
1925                    AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
1926        }
1927    }
1928
1929    /**
1930     * Returns the top padding of the view, plus space for the top
1931     * Drawable if any.
1932     */
1933    public int getCompoundPaddingTop() {
1934        final Drawables dr = mDrawables;
1935        if (dr == null || dr.mShowing[Drawables.TOP] == null) {
1936            return mPaddingTop;
1937        } else {
1938            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1939        }
1940    }
1941
1942    /**
1943     * Returns the bottom padding of the view, plus space for the bottom
1944     * Drawable if any.
1945     */
1946    public int getCompoundPaddingBottom() {
1947        final Drawables dr = mDrawables;
1948        if (dr == null || dr.mShowing[Drawables.BOTTOM] == null) {
1949            return mPaddingBottom;
1950        } else {
1951            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1952        }
1953    }
1954
1955    /**
1956     * Returns the left padding of the view, plus space for the left
1957     * Drawable if any.
1958     */
1959    public int getCompoundPaddingLeft() {
1960        final Drawables dr = mDrawables;
1961        if (dr == null || dr.mShowing[Drawables.LEFT] == null) {
1962            return mPaddingLeft;
1963        } else {
1964            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1965        }
1966    }
1967
1968    /**
1969     * Returns the right padding of the view, plus space for the right
1970     * Drawable if any.
1971     */
1972    public int getCompoundPaddingRight() {
1973        final Drawables dr = mDrawables;
1974        if (dr == null || dr.mShowing[Drawables.RIGHT] == null) {
1975            return mPaddingRight;
1976        } else {
1977            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1978        }
1979    }
1980
1981    /**
1982     * Returns the start padding of the view, plus space for the start
1983     * Drawable if any.
1984     */
1985    public int getCompoundPaddingStart() {
1986        resolveDrawables();
1987        switch(getLayoutDirection()) {
1988            default:
1989            case LAYOUT_DIRECTION_LTR:
1990                return getCompoundPaddingLeft();
1991            case LAYOUT_DIRECTION_RTL:
1992                return getCompoundPaddingRight();
1993        }
1994    }
1995
1996    /**
1997     * Returns the end padding of the view, plus space for the end
1998     * Drawable if any.
1999     */
2000    public int getCompoundPaddingEnd() {
2001        resolveDrawables();
2002        switch(getLayoutDirection()) {
2003            default:
2004            case LAYOUT_DIRECTION_LTR:
2005                return getCompoundPaddingRight();
2006            case LAYOUT_DIRECTION_RTL:
2007                return getCompoundPaddingLeft();
2008        }
2009    }
2010
2011    /**
2012     * Returns the extended top padding of the view, including both the
2013     * top Drawable if any and any extra space to keep more than maxLines
2014     * of text from showing.  It is only valid to call this after measuring.
2015     */
2016    public int getExtendedPaddingTop() {
2017        if (mMaxMode != LINES) {
2018            return getCompoundPaddingTop();
2019        }
2020
2021        if (mLayout == null) {
2022            assumeLayout();
2023        }
2024
2025        if (mLayout.getLineCount() <= mMaximum) {
2026            return getCompoundPaddingTop();
2027        }
2028
2029        int top = getCompoundPaddingTop();
2030        int bottom = getCompoundPaddingBottom();
2031        int viewht = getHeight() - top - bottom;
2032        int layoutht = mLayout.getLineTop(mMaximum);
2033
2034        if (layoutht >= viewht) {
2035            return top;
2036        }
2037
2038        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2039        if (gravity == Gravity.TOP) {
2040            return top;
2041        } else if (gravity == Gravity.BOTTOM) {
2042            return top + viewht - layoutht;
2043        } else { // (gravity == Gravity.CENTER_VERTICAL)
2044            return top + (viewht - layoutht) / 2;
2045        }
2046    }
2047
2048    /**
2049     * Returns the extended bottom padding of the view, including both the
2050     * bottom Drawable if any and any extra space to keep more than maxLines
2051     * of text from showing.  It is only valid to call this after measuring.
2052     */
2053    public int getExtendedPaddingBottom() {
2054        if (mMaxMode != LINES) {
2055            return getCompoundPaddingBottom();
2056        }
2057
2058        if (mLayout == null) {
2059            assumeLayout();
2060        }
2061
2062        if (mLayout.getLineCount() <= mMaximum) {
2063            return getCompoundPaddingBottom();
2064        }
2065
2066        int top = getCompoundPaddingTop();
2067        int bottom = getCompoundPaddingBottom();
2068        int viewht = getHeight() - top - bottom;
2069        int layoutht = mLayout.getLineTop(mMaximum);
2070
2071        if (layoutht >= viewht) {
2072            return bottom;
2073        }
2074
2075        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2076        if (gravity == Gravity.TOP) {
2077            return bottom + viewht - layoutht;
2078        } else if (gravity == Gravity.BOTTOM) {
2079            return bottom;
2080        } else { // (gravity == Gravity.CENTER_VERTICAL)
2081            return bottom + (viewht - layoutht) / 2;
2082        }
2083    }
2084
2085    /**
2086     * Returns the total left padding of the view, including the left
2087     * Drawable if any.
2088     */
2089    public int getTotalPaddingLeft() {
2090        return getCompoundPaddingLeft();
2091    }
2092
2093    /**
2094     * Returns the total right padding of the view, including the right
2095     * Drawable if any.
2096     */
2097    public int getTotalPaddingRight() {
2098        return getCompoundPaddingRight();
2099    }
2100
2101    /**
2102     * Returns the total start padding of the view, including the start
2103     * Drawable if any.
2104     */
2105    public int getTotalPaddingStart() {
2106        return getCompoundPaddingStart();
2107    }
2108
2109    /**
2110     * Returns the total end padding of the view, including the end
2111     * Drawable if any.
2112     */
2113    public int getTotalPaddingEnd() {
2114        return getCompoundPaddingEnd();
2115    }
2116
2117    /**
2118     * Returns the total top padding of the view, including the top
2119     * Drawable if any, the extra space to keep more than maxLines
2120     * from showing, and the vertical offset for gravity, if any.
2121     */
2122    public int getTotalPaddingTop() {
2123        return getExtendedPaddingTop() + getVerticalOffset(true);
2124    }
2125
2126    /**
2127     * Returns the total bottom padding of the view, including the bottom
2128     * Drawable if any, the extra space to keep more than maxLines
2129     * from showing, and the vertical offset for gravity, if any.
2130     */
2131    public int getTotalPaddingBottom() {
2132        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
2133    }
2134
2135    /**
2136     * Sets the Drawables (if any) to appear to the left of, above, to the
2137     * right of, and below the text. Use {@code null} if you do not want a
2138     * Drawable there. The Drawables must already have had
2139     * {@link Drawable#setBounds} called.
2140     * <p>
2141     * Calling this method will overwrite any Drawables previously set using
2142     * {@link #setCompoundDrawablesRelative} or related methods.
2143     *
2144     * @attr ref android.R.styleable#TextView_drawableLeft
2145     * @attr ref android.R.styleable#TextView_drawableTop
2146     * @attr ref android.R.styleable#TextView_drawableRight
2147     * @attr ref android.R.styleable#TextView_drawableBottom
2148     */
2149    public void setCompoundDrawables(@Nullable Drawable left, @Nullable Drawable top,
2150            @Nullable Drawable right, @Nullable Drawable bottom) {
2151        Drawables dr = mDrawables;
2152
2153        // We're switching to absolute, discard relative.
2154        if (dr != null) {
2155            if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2156            dr.mDrawableStart = null;
2157            if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2158            dr.mDrawableEnd = null;
2159            dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2160            dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2161        }
2162
2163        final boolean drawables = left != null || top != null || right != null || bottom != null;
2164        if (!drawables) {
2165            // Clearing drawables...  can we free the data structure?
2166            if (dr != null) {
2167                if (dr.mDrawablePadding == 0) {
2168                    mDrawables = null;
2169                } else {
2170                    // We need to retain the last set padding, so just clear
2171                    // out all of the fields in the existing structure.
2172                    for (int i = dr.mShowing.length - 1; i >= 0; i--) {
2173                        if (dr.mShowing[i] != null) {
2174                            dr.mShowing[i].setCallback(null);
2175                        }
2176                        dr.mShowing[i] = null;
2177                    }
2178                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2179                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2180                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2181                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2182                }
2183            }
2184        } else {
2185            if (dr == null) {
2186                mDrawables = dr = new Drawables(getContext());
2187            }
2188
2189            mDrawables.mOverride = false;
2190
2191            if (dr.mShowing[Drawables.LEFT] != left && dr.mShowing[Drawables.LEFT] != null) {
2192                dr.mShowing[Drawables.LEFT].setCallback(null);
2193            }
2194            dr.mShowing[Drawables.LEFT] = left;
2195
2196            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2197                dr.mShowing[Drawables.TOP].setCallback(null);
2198            }
2199            dr.mShowing[Drawables.TOP] = top;
2200
2201            if (dr.mShowing[Drawables.RIGHT] != right && dr.mShowing[Drawables.RIGHT] != null) {
2202                dr.mShowing[Drawables.RIGHT].setCallback(null);
2203            }
2204            dr.mShowing[Drawables.RIGHT] = right;
2205
2206            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2207                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2208            }
2209            dr.mShowing[Drawables.BOTTOM] = bottom;
2210
2211            final Rect compoundRect = dr.mCompoundRect;
2212            int[] state;
2213
2214            state = getDrawableState();
2215
2216            if (left != null) {
2217                left.setState(state);
2218                left.copyBounds(compoundRect);
2219                left.setCallback(this);
2220                dr.mDrawableSizeLeft = compoundRect.width();
2221                dr.mDrawableHeightLeft = compoundRect.height();
2222            } else {
2223                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2224            }
2225
2226            if (right != null) {
2227                right.setState(state);
2228                right.copyBounds(compoundRect);
2229                right.setCallback(this);
2230                dr.mDrawableSizeRight = compoundRect.width();
2231                dr.mDrawableHeightRight = compoundRect.height();
2232            } else {
2233                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2234            }
2235
2236            if (top != null) {
2237                top.setState(state);
2238                top.copyBounds(compoundRect);
2239                top.setCallback(this);
2240                dr.mDrawableSizeTop = compoundRect.height();
2241                dr.mDrawableWidthTop = compoundRect.width();
2242            } else {
2243                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2244            }
2245
2246            if (bottom != null) {
2247                bottom.setState(state);
2248                bottom.copyBounds(compoundRect);
2249                bottom.setCallback(this);
2250                dr.mDrawableSizeBottom = compoundRect.height();
2251                dr.mDrawableWidthBottom = compoundRect.width();
2252            } else {
2253                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2254            }
2255        }
2256
2257        // Save initial left/right drawables
2258        if (dr != null) {
2259            dr.mDrawableLeftInitial = left;
2260            dr.mDrawableRightInitial = right;
2261        }
2262
2263        resetResolvedDrawables();
2264        resolveDrawables();
2265        applyCompoundDrawableTint();
2266        invalidate();
2267        requestLayout();
2268    }
2269
2270    /**
2271     * Sets the Drawables (if any) to appear to the left of, above, to the
2272     * right of, and below the text. Use 0 if you do not want a Drawable there.
2273     * The Drawables' bounds will be set to their intrinsic bounds.
2274     * <p>
2275     * Calling this method will overwrite any Drawables previously set using
2276     * {@link #setCompoundDrawablesRelative} or related methods.
2277     *
2278     * @param left Resource identifier of the left Drawable.
2279     * @param top Resource identifier of the top Drawable.
2280     * @param right Resource identifier of the right Drawable.
2281     * @param bottom Resource identifier of the bottom Drawable.
2282     *
2283     * @attr ref android.R.styleable#TextView_drawableLeft
2284     * @attr ref android.R.styleable#TextView_drawableTop
2285     * @attr ref android.R.styleable#TextView_drawableRight
2286     * @attr ref android.R.styleable#TextView_drawableBottom
2287     */
2288    @android.view.RemotableViewMethod
2289    public void setCompoundDrawablesWithIntrinsicBounds(@DrawableRes int left,
2290            @DrawableRes int top, @DrawableRes int right, @DrawableRes int bottom) {
2291        final Context context = getContext();
2292        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? context.getDrawable(left) : null,
2293                top != 0 ? context.getDrawable(top) : null,
2294                right != 0 ? context.getDrawable(right) : null,
2295                bottom != 0 ? context.getDrawable(bottom) : null);
2296    }
2297
2298    /**
2299     * Sets the Drawables (if any) to appear to the left of, above, to the
2300     * right of, and below the text. Use {@code null} if you do not want a
2301     * Drawable there. The Drawables' bounds will be set to their intrinsic
2302     * bounds.
2303     * <p>
2304     * Calling this method will overwrite any Drawables previously set using
2305     * {@link #setCompoundDrawablesRelative} or related methods.
2306     *
2307     * @attr ref android.R.styleable#TextView_drawableLeft
2308     * @attr ref android.R.styleable#TextView_drawableTop
2309     * @attr ref android.R.styleable#TextView_drawableRight
2310     * @attr ref android.R.styleable#TextView_drawableBottom
2311     */
2312    @android.view.RemotableViewMethod
2313    public void setCompoundDrawablesWithIntrinsicBounds(@Nullable Drawable left,
2314            @Nullable Drawable top, @Nullable Drawable right, @Nullable Drawable bottom) {
2315
2316        if (left != null) {
2317            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
2318        }
2319        if (right != null) {
2320            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
2321        }
2322        if (top != null) {
2323            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2324        }
2325        if (bottom != null) {
2326            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2327        }
2328        setCompoundDrawables(left, top, right, bottom);
2329    }
2330
2331    /**
2332     * Sets the Drawables (if any) to appear to the start of, above, to the end
2333     * of, and below the text. Use {@code null} if you do not want a Drawable
2334     * there. The Drawables must already have had {@link Drawable#setBounds}
2335     * called.
2336     * <p>
2337     * Calling this method will overwrite any Drawables previously set using
2338     * {@link #setCompoundDrawables} or related methods.
2339     *
2340     * @attr ref android.R.styleable#TextView_drawableStart
2341     * @attr ref android.R.styleable#TextView_drawableTop
2342     * @attr ref android.R.styleable#TextView_drawableEnd
2343     * @attr ref android.R.styleable#TextView_drawableBottom
2344     */
2345    @android.view.RemotableViewMethod
2346    public void setCompoundDrawablesRelative(@Nullable Drawable start, @Nullable Drawable top,
2347            @Nullable Drawable end, @Nullable Drawable bottom) {
2348        Drawables dr = mDrawables;
2349
2350        // We're switching to relative, discard absolute.
2351        if (dr != null) {
2352            if (dr.mShowing[Drawables.LEFT] != null) {
2353                dr.mShowing[Drawables.LEFT].setCallback(null);
2354            }
2355            dr.mShowing[Drawables.LEFT] = dr.mDrawableLeftInitial = null;
2356            if (dr.mShowing[Drawables.RIGHT] != null) {
2357                dr.mShowing[Drawables.RIGHT].setCallback(null);
2358            }
2359            dr.mShowing[Drawables.RIGHT] = dr.mDrawableRightInitial = null;
2360            dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2361            dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2362        }
2363
2364        final boolean drawables = start != null || top != null
2365                || end != null || bottom != null;
2366
2367        if (!drawables) {
2368            // Clearing drawables...  can we free the data structure?
2369            if (dr != null) {
2370                if (dr.mDrawablePadding == 0) {
2371                    mDrawables = null;
2372                } else {
2373                    // We need to retain the last set padding, so just clear
2374                    // out all of the fields in the existing structure.
2375                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2376                    dr.mDrawableStart = null;
2377                    if (dr.mShowing[Drawables.TOP] != null) {
2378                        dr.mShowing[Drawables.TOP].setCallback(null);
2379                    }
2380                    dr.mShowing[Drawables.TOP] = null;
2381                    if (dr.mDrawableEnd != null) {
2382                        dr.mDrawableEnd.setCallback(null);
2383                    }
2384                    dr.mDrawableEnd = null;
2385                    if (dr.mShowing[Drawables.BOTTOM] != null) {
2386                        dr.mShowing[Drawables.BOTTOM].setCallback(null);
2387                    }
2388                    dr.mShowing[Drawables.BOTTOM] = null;
2389                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2390                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2391                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2392                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2393                }
2394            }
2395        } else {
2396            if (dr == null) {
2397                mDrawables = dr = new Drawables(getContext());
2398            }
2399
2400            mDrawables.mOverride = true;
2401
2402            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
2403                dr.mDrawableStart.setCallback(null);
2404            }
2405            dr.mDrawableStart = start;
2406
2407            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2408                dr.mShowing[Drawables.TOP].setCallback(null);
2409            }
2410            dr.mShowing[Drawables.TOP] = top;
2411
2412            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
2413                dr.mDrawableEnd.setCallback(null);
2414            }
2415            dr.mDrawableEnd = end;
2416
2417            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2418                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2419            }
2420            dr.mShowing[Drawables.BOTTOM] = bottom;
2421
2422            final Rect compoundRect = dr.mCompoundRect;
2423            int[] state;
2424
2425            state = getDrawableState();
2426
2427            if (start != null) {
2428                start.setState(state);
2429                start.copyBounds(compoundRect);
2430                start.setCallback(this);
2431                dr.mDrawableSizeStart = compoundRect.width();
2432                dr.mDrawableHeightStart = compoundRect.height();
2433            } else {
2434                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2435            }
2436
2437            if (end != null) {
2438                end.setState(state);
2439                end.copyBounds(compoundRect);
2440                end.setCallback(this);
2441                dr.mDrawableSizeEnd = compoundRect.width();
2442                dr.mDrawableHeightEnd = compoundRect.height();
2443            } else {
2444                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2445            }
2446
2447            if (top != null) {
2448                top.setState(state);
2449                top.copyBounds(compoundRect);
2450                top.setCallback(this);
2451                dr.mDrawableSizeTop = compoundRect.height();
2452                dr.mDrawableWidthTop = compoundRect.width();
2453            } else {
2454                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2455            }
2456
2457            if (bottom != null) {
2458                bottom.setState(state);
2459                bottom.copyBounds(compoundRect);
2460                bottom.setCallback(this);
2461                dr.mDrawableSizeBottom = compoundRect.height();
2462                dr.mDrawableWidthBottom = compoundRect.width();
2463            } else {
2464                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2465            }
2466        }
2467
2468        resetResolvedDrawables();
2469        resolveDrawables();
2470        invalidate();
2471        requestLayout();
2472    }
2473
2474    /**
2475     * Sets the Drawables (if any) to appear to the start of, above, to the end
2476     * of, and below the text. Use 0 if you do not want a Drawable there. The
2477     * Drawables' bounds will be set to their intrinsic bounds.
2478     * <p>
2479     * Calling this method will overwrite any Drawables previously set using
2480     * {@link #setCompoundDrawables} or related methods.
2481     *
2482     * @param start Resource identifier of the start Drawable.
2483     * @param top Resource identifier of the top Drawable.
2484     * @param end Resource identifier of the end Drawable.
2485     * @param bottom Resource identifier of the bottom Drawable.
2486     *
2487     * @attr ref android.R.styleable#TextView_drawableStart
2488     * @attr ref android.R.styleable#TextView_drawableTop
2489     * @attr ref android.R.styleable#TextView_drawableEnd
2490     * @attr ref android.R.styleable#TextView_drawableBottom
2491     */
2492    @android.view.RemotableViewMethod
2493    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@DrawableRes int start,
2494            @DrawableRes int top, @DrawableRes int end, @DrawableRes int bottom) {
2495        final Context context = getContext();
2496        setCompoundDrawablesRelativeWithIntrinsicBounds(
2497                start != 0 ? context.getDrawable(start) : null,
2498                top != 0 ? context.getDrawable(top) : null,
2499                end != 0 ? context.getDrawable(end) : null,
2500                bottom != 0 ? context.getDrawable(bottom) : null);
2501    }
2502
2503    /**
2504     * Sets the Drawables (if any) to appear to the start of, above, to the end
2505     * of, and below the text. Use {@code null} if you do not want a Drawable
2506     * there. The Drawables' bounds will be set to their intrinsic bounds.
2507     * <p>
2508     * Calling this method will overwrite any Drawables previously set using
2509     * {@link #setCompoundDrawables} or related methods.
2510     *
2511     * @attr ref android.R.styleable#TextView_drawableStart
2512     * @attr ref android.R.styleable#TextView_drawableTop
2513     * @attr ref android.R.styleable#TextView_drawableEnd
2514     * @attr ref android.R.styleable#TextView_drawableBottom
2515     */
2516    @android.view.RemotableViewMethod
2517    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@Nullable Drawable start,
2518            @Nullable Drawable top, @Nullable Drawable end, @Nullable Drawable bottom) {
2519
2520        if (start != null) {
2521            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2522        }
2523        if (end != null) {
2524            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2525        }
2526        if (top != null) {
2527            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2528        }
2529        if (bottom != null) {
2530            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2531        }
2532        setCompoundDrawablesRelative(start, top, end, bottom);
2533    }
2534
2535    /**
2536     * Returns drawables for the left, top, right, and bottom borders.
2537     *
2538     * @attr ref android.R.styleable#TextView_drawableLeft
2539     * @attr ref android.R.styleable#TextView_drawableTop
2540     * @attr ref android.R.styleable#TextView_drawableRight
2541     * @attr ref android.R.styleable#TextView_drawableBottom
2542     */
2543    @NonNull
2544    public Drawable[] getCompoundDrawables() {
2545        final Drawables dr = mDrawables;
2546        if (dr != null) {
2547            return dr.mShowing.clone();
2548        } else {
2549            return new Drawable[] { null, null, null, null };
2550        }
2551    }
2552
2553    /**
2554     * Returns drawables for the start, top, end, and bottom borders.
2555     *
2556     * @attr ref android.R.styleable#TextView_drawableStart
2557     * @attr ref android.R.styleable#TextView_drawableTop
2558     * @attr ref android.R.styleable#TextView_drawableEnd
2559     * @attr ref android.R.styleable#TextView_drawableBottom
2560     */
2561    @NonNull
2562    public Drawable[] getCompoundDrawablesRelative() {
2563        final Drawables dr = mDrawables;
2564        if (dr != null) {
2565            return new Drawable[] {
2566                dr.mDrawableStart, dr.mShowing[Drawables.TOP],
2567                dr.mDrawableEnd, dr.mShowing[Drawables.BOTTOM]
2568            };
2569        } else {
2570            return new Drawable[] { null, null, null, null };
2571        }
2572    }
2573
2574    /**
2575     * Sets the size of the padding between the compound drawables and
2576     * the text.
2577     *
2578     * @attr ref android.R.styleable#TextView_drawablePadding
2579     */
2580    @android.view.RemotableViewMethod
2581    public void setCompoundDrawablePadding(int pad) {
2582        Drawables dr = mDrawables;
2583        if (pad == 0) {
2584            if (dr != null) {
2585                dr.mDrawablePadding = pad;
2586            }
2587        } else {
2588            if (dr == null) {
2589                mDrawables = dr = new Drawables(getContext());
2590            }
2591            dr.mDrawablePadding = pad;
2592        }
2593
2594        invalidate();
2595        requestLayout();
2596    }
2597
2598    /**
2599     * Returns the padding between the compound drawables and the text.
2600     *
2601     * @attr ref android.R.styleable#TextView_drawablePadding
2602     */
2603    public int getCompoundDrawablePadding() {
2604        final Drawables dr = mDrawables;
2605        return dr != null ? dr.mDrawablePadding : 0;
2606    }
2607
2608    /**
2609     * Applies a tint to the compound drawables. Does not modify the
2610     * current tint mode, which is {@link PorterDuff.Mode#SRC_IN} by default.
2611     * <p>
2612     * Subsequent calls to
2613     * {@link #setCompoundDrawables(Drawable, Drawable, Drawable, Drawable)}
2614     * and related methods will automatically mutate the drawables and apply
2615     * the specified tint and tint mode using
2616     * {@link Drawable#setTintList(ColorStateList)}.
2617     *
2618     * @param tint the tint to apply, may be {@code null} to clear tint
2619     *
2620     * @attr ref android.R.styleable#TextView_drawableTint
2621     * @see #getCompoundDrawableTintList()
2622     * @see Drawable#setTintList(ColorStateList)
2623     */
2624    public void setCompoundDrawableTintList(@Nullable ColorStateList tint) {
2625        if (mDrawables == null) {
2626            mDrawables = new Drawables(getContext());
2627        }
2628        mDrawables.mTintList = tint;
2629        mDrawables.mHasTint = true;
2630
2631        applyCompoundDrawableTint();
2632    }
2633
2634    /**
2635     * @return the tint applied to the compound drawables
2636     * @attr ref android.R.styleable#TextView_drawableTint
2637     * @see #setCompoundDrawableTintList(ColorStateList)
2638     */
2639    public ColorStateList getCompoundDrawableTintList() {
2640        return mDrawables != null ? mDrawables.mTintList : null;
2641    }
2642
2643    /**
2644     * Specifies the blending mode used to apply the tint specified by
2645     * {@link #setCompoundDrawableTintList(ColorStateList)} to the compound
2646     * drawables. The default mode is {@link PorterDuff.Mode#SRC_IN}.
2647     *
2648     * @param tintMode the blending mode used to apply the tint, may be
2649     *                 {@code null} to clear tint
2650     * @attr ref android.R.styleable#TextView_drawableTintMode
2651     * @see #setCompoundDrawableTintList(ColorStateList)
2652     * @see Drawable#setTintMode(PorterDuff.Mode)
2653     */
2654    public void setCompoundDrawableTintMode(@Nullable PorterDuff.Mode tintMode) {
2655        if (mDrawables == null) {
2656            mDrawables = new Drawables(getContext());
2657        }
2658        mDrawables.mTintMode = tintMode;
2659        mDrawables.mHasTintMode = true;
2660
2661        applyCompoundDrawableTint();
2662    }
2663
2664    /**
2665     * Returns the blending mode used to apply the tint to the compound
2666     * drawables, if specified.
2667     *
2668     * @return the blending mode used to apply the tint to the compound
2669     *         drawables
2670     * @attr ref android.R.styleable#TextView_drawableTintMode
2671     * @see #setCompoundDrawableTintMode(PorterDuff.Mode)
2672     */
2673    public PorterDuff.Mode getCompoundDrawableTintMode() {
2674        return mDrawables != null ? mDrawables.mTintMode : null;
2675    }
2676
2677    private void applyCompoundDrawableTint() {
2678        if (mDrawables == null) {
2679            return;
2680        }
2681
2682        if (mDrawables.mHasTint || mDrawables.mHasTintMode) {
2683            final ColorStateList tintList = mDrawables.mTintList;
2684            final PorterDuff.Mode tintMode = mDrawables.mTintMode;
2685            final boolean hasTint = mDrawables.mHasTint;
2686            final boolean hasTintMode = mDrawables.mHasTintMode;
2687            final int[] state = getDrawableState();
2688
2689            for (Drawable dr : mDrawables.mShowing) {
2690                if (dr == null) {
2691                    continue;
2692                }
2693
2694                if (dr == mDrawables.mDrawableError) {
2695                    // From a developer's perspective, the error drawable isn't
2696                    // a compound drawable. Don't apply the generic compound
2697                    // drawable tint to it.
2698                    continue;
2699                }
2700
2701                dr.mutate();
2702
2703                if (hasTint) {
2704                    dr.setTintList(tintList);
2705                }
2706
2707                if (hasTintMode) {
2708                    dr.setTintMode(tintMode);
2709                }
2710
2711                // The drawable (or one of its children) may not have been
2712                // stateful before applying the tint, so let's try again.
2713                if (dr.isStateful()) {
2714                    dr.setState(state);
2715                }
2716            }
2717        }
2718    }
2719
2720    @Override
2721    public void setPadding(int left, int top, int right, int bottom) {
2722        if (left != mPaddingLeft ||
2723            right != mPaddingRight ||
2724            top != mPaddingTop ||
2725            bottom != mPaddingBottom) {
2726            nullLayouts();
2727        }
2728
2729        // the super call will requestLayout()
2730        super.setPadding(left, top, right, bottom);
2731        invalidate();
2732    }
2733
2734    @Override
2735    public void setPaddingRelative(int start, int top, int end, int bottom) {
2736        if (start != getPaddingStart() ||
2737            end != getPaddingEnd() ||
2738            top != mPaddingTop ||
2739            bottom != mPaddingBottom) {
2740            nullLayouts();
2741        }
2742
2743        // the super call will requestLayout()
2744        super.setPaddingRelative(start, top, end, bottom);
2745        invalidate();
2746    }
2747
2748    /**
2749     * Gets the autolink mask of the text.  See {@link
2750     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2751     * possible values.
2752     *
2753     * @attr ref android.R.styleable#TextView_autoLink
2754     */
2755    public final int getAutoLinkMask() {
2756        return mAutoLinkMask;
2757    }
2758
2759    /**
2760     * Sets the text appearance from the specified style resource.
2761     * <p>
2762     * Use a framework-defined {@code TextAppearance} style like
2763     * {@link android.R.style#TextAppearance_Material_Body1 @android:style/TextAppearance.Material.Body1}
2764     * or see {@link android.R.styleable#TextAppearance TextAppearance} for the
2765     * set of attributes that can be used in a custom style.
2766     *
2767     * @param resId the resource identifier of the style to apply
2768     * @attr ref android.R.styleable#TextView_textAppearance
2769     */
2770    @SuppressWarnings("deprecation")
2771    public void setTextAppearance(@StyleRes int resId) {
2772        setTextAppearance(mContext, resId);
2773    }
2774
2775    /**
2776     * Sets the text color, size, style, hint color, and highlight color
2777     * from the specified TextAppearance resource.
2778     *
2779     * @deprecated Use {@link #setTextAppearance(int)} instead.
2780     */
2781    @Deprecated
2782    public void setTextAppearance(Context context, @StyleRes int resId) {
2783        final TypedArray ta = context.obtainStyledAttributes(resId, R.styleable.TextAppearance);
2784
2785        final int textColorHighlight = ta.getColor(
2786                R.styleable.TextAppearance_textColorHighlight, 0);
2787        if (textColorHighlight != 0) {
2788            setHighlightColor(textColorHighlight);
2789        }
2790
2791        final ColorStateList textColor = ta.getColorStateList(R.styleable.TextAppearance_textColor);
2792        if (textColor != null) {
2793            setTextColor(textColor);
2794        }
2795
2796        final int textSize = ta.getDimensionPixelSize(R.styleable.TextAppearance_textSize, 0);
2797        if (textSize != 0) {
2798            setRawTextSize(textSize);
2799        }
2800
2801        final ColorStateList textColorHint = ta.getColorStateList(
2802                R.styleable.TextAppearance_textColorHint);
2803        if (textColorHint != null) {
2804            setHintTextColor(textColorHint);
2805        }
2806
2807        final ColorStateList textColorLink = ta.getColorStateList(
2808                R.styleable.TextAppearance_textColorLink);
2809        if (textColorLink != null) {
2810            setLinkTextColor(textColorLink);
2811        }
2812
2813        final String fontFamily = ta.getString(R.styleable.TextAppearance_fontFamily);
2814        final int typefaceIndex = ta.getInt(R.styleable.TextAppearance_typeface, -1);
2815        final int styleIndex = ta.getInt(R.styleable.TextAppearance_textStyle, -1);
2816        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
2817
2818        final int shadowColor = ta.getInt(R.styleable.TextAppearance_shadowColor, 0);
2819        if (shadowColor != 0) {
2820            final float dx = ta.getFloat(R.styleable.TextAppearance_shadowDx, 0);
2821            final float dy = ta.getFloat(R.styleable.TextAppearance_shadowDy, 0);
2822            final float r = ta.getFloat(R.styleable.TextAppearance_shadowRadius, 0);
2823            setShadowLayer(r, dx, dy, shadowColor);
2824        }
2825
2826        if (ta.getBoolean(R.styleable.TextAppearance_textAllCaps, false)) {
2827            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2828        }
2829
2830        if (ta.hasValue(R.styleable.TextAppearance_elegantTextHeight)) {
2831            setElegantTextHeight(ta.getBoolean(
2832                R.styleable.TextAppearance_elegantTextHeight, false));
2833        }
2834
2835        if (ta.hasValue(R.styleable.TextAppearance_letterSpacing)) {
2836            setLetterSpacing(ta.getFloat(
2837                R.styleable.TextAppearance_letterSpacing, 0));
2838        }
2839
2840        if (ta.hasValue(R.styleable.TextAppearance_fontFeatureSettings)) {
2841            setFontFeatureSettings(ta.getString(
2842                R.styleable.TextAppearance_fontFeatureSettings));
2843        }
2844
2845        ta.recycle();
2846    }
2847
2848    /**
2849     * Get the default primary {@link Locale} of the text in this TextView. This will always be
2850     * the first member of {@link #getTextLocales()}.
2851     * @return the default primary {@link Locale} of the text in this TextView.
2852     */
2853    @NonNull
2854    public Locale getTextLocale() {
2855        return mTextPaint.getTextLocale();
2856    }
2857
2858    /**
2859     * Get the default {@link LocaleList} of the text in this TextView.
2860     * @return the default {@link LocaleList} of the text in this TextView.
2861     */
2862    @NonNull @Size(min=1)
2863    public LocaleList getTextLocales() {
2864        return mTextPaint.getTextLocales();
2865    }
2866
2867    /**
2868     * Set the default {@link LocaleList} of the text in this TextView to a one-member list
2869     * containing just the given value.
2870     *
2871     * @param locale the {@link Locale} for drawing text, must not be null.
2872     *
2873     * @see #setTextLocales
2874     */
2875    public void setTextLocale(@NonNull Locale locale) {
2876        mLocalesChanged = true;
2877        mTextPaint.setTextLocale(locale);
2878    }
2879
2880    /**
2881     * Set the default {@link LocaleList} of the text in this TextView to the given value.
2882     *
2883     * This value is used to choose appropriate typefaces for ambiguous characters (typically used
2884     * for CJK locales to disambiguate Hanzi/Kanji/Hanja characters). It also affects
2885     * other aspects of text display, including line breaking.
2886     *
2887     * @param locales the {@link LocaleList} for drawing text, must not be null or empty.
2888     *
2889     * @see Paint#setTextLocales
2890     */
2891    public void setTextLocales(@NonNull @Size(min=1) LocaleList locales) {
2892        mLocalesChanged = true;
2893        mTextPaint.setTextLocales(locales);
2894    }
2895
2896    @Override
2897    protected void onConfigurationChanged(Configuration newConfig) {
2898        super.onConfigurationChanged(newConfig);
2899        if (!mLocalesChanged) {
2900            mTextPaint.setTextLocales(LocaleList.getDefault());
2901        }
2902    }
2903
2904    /**
2905     * @return the size (in pixels) of the default text size in this TextView.
2906     */
2907    @ViewDebug.ExportedProperty(category = "text")
2908    public float getTextSize() {
2909        return mTextPaint.getTextSize();
2910    }
2911
2912    /**
2913     * @return the size (in scaled pixels) of thee default text size in this TextView.
2914     * @hide
2915     */
2916    @ViewDebug.ExportedProperty(category = "text")
2917    public float getScaledTextSize() {
2918        return mTextPaint.getTextSize() / mTextPaint.density;
2919    }
2920
2921    /** @hide */
2922    @ViewDebug.ExportedProperty(category = "text", mapping = {
2923            @ViewDebug.IntToString(from = Typeface.NORMAL, to = "NORMAL"),
2924            @ViewDebug.IntToString(from = Typeface.BOLD, to = "BOLD"),
2925            @ViewDebug.IntToString(from = Typeface.ITALIC, to = "ITALIC"),
2926            @ViewDebug.IntToString(from = Typeface.BOLD_ITALIC, to = "BOLD_ITALIC")
2927    })
2928    public int getTypefaceStyle() {
2929        Typeface typeface = mTextPaint.getTypeface();
2930        return typeface != null ? typeface.getStyle() : Typeface.NORMAL;
2931    }
2932
2933    /**
2934     * Set the default text size to the given value, interpreted as "scaled
2935     * pixel" units.  This size is adjusted based on the current density and
2936     * user font size preference.
2937     *
2938     * @param size The scaled pixel size.
2939     *
2940     * @attr ref android.R.styleable#TextView_textSize
2941     */
2942    @android.view.RemotableViewMethod
2943    public void setTextSize(float size) {
2944        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2945    }
2946
2947    /**
2948     * Set the default text size to a given unit and value.  See {@link
2949     * TypedValue} for the possible dimension units.
2950     *
2951     * @param unit The desired dimension unit.
2952     * @param size The desired size in the given units.
2953     *
2954     * @attr ref android.R.styleable#TextView_textSize
2955     */
2956    public void setTextSize(int unit, float size) {
2957        Context c = getContext();
2958        Resources r;
2959
2960        if (c == null)
2961            r = Resources.getSystem();
2962        else
2963            r = c.getResources();
2964
2965        setRawTextSize(TypedValue.applyDimension(
2966                unit, size, r.getDisplayMetrics()));
2967    }
2968
2969    private void setRawTextSize(float size) {
2970        if (size != mTextPaint.getTextSize()) {
2971            mTextPaint.setTextSize(size);
2972
2973            if (mLayout != null) {
2974                nullLayouts();
2975                requestLayout();
2976                invalidate();
2977            }
2978        }
2979    }
2980
2981    /**
2982     * @return the extent by which text is currently being stretched
2983     * horizontally.  This will usually be 1.
2984     */
2985    public float getTextScaleX() {
2986        return mTextPaint.getTextScaleX();
2987    }
2988
2989    /**
2990     * Sets the extent by which text should be stretched horizontally.
2991     *
2992     * @attr ref android.R.styleable#TextView_textScaleX
2993     */
2994    @android.view.RemotableViewMethod
2995    public void setTextScaleX(float size) {
2996        if (size != mTextPaint.getTextScaleX()) {
2997            mUserSetTextScaleX = true;
2998            mTextPaint.setTextScaleX(size);
2999
3000            if (mLayout != null) {
3001                nullLayouts();
3002                requestLayout();
3003                invalidate();
3004            }
3005        }
3006    }
3007
3008    /**
3009     * Sets the typeface and style in which the text should be displayed.
3010     * Note that not all Typeface families actually have bold and italic
3011     * variants, so you may need to use
3012     * {@link #setTypeface(Typeface, int)} to get the appearance
3013     * that you actually want.
3014     *
3015     * @see #getTypeface()
3016     *
3017     * @attr ref android.R.styleable#TextView_fontFamily
3018     * @attr ref android.R.styleable#TextView_typeface
3019     * @attr ref android.R.styleable#TextView_textStyle
3020     */
3021    public void setTypeface(Typeface tf) {
3022        if (mTextPaint.getTypeface() != tf) {
3023            mTextPaint.setTypeface(tf);
3024
3025            if (mLayout != null) {
3026                nullLayouts();
3027                requestLayout();
3028                invalidate();
3029            }
3030        }
3031    }
3032
3033    /**
3034     * @return the current typeface and style in which the text is being
3035     * displayed.
3036     *
3037     * @see #setTypeface(Typeface)
3038     *
3039     * @attr ref android.R.styleable#TextView_fontFamily
3040     * @attr ref android.R.styleable#TextView_typeface
3041     * @attr ref android.R.styleable#TextView_textStyle
3042     */
3043    public Typeface getTypeface() {
3044        return mTextPaint.getTypeface();
3045    }
3046
3047    /**
3048     * Set the TextView's elegant height metrics flag. This setting selects font
3049     * variants that have not been compacted to fit Latin-based vertical
3050     * metrics, and also increases top and bottom bounds to provide more space.
3051     *
3052     * @param elegant set the paint's elegant metrics flag.
3053     *
3054     * @attr ref android.R.styleable#TextView_elegantTextHeight
3055     */
3056    public void setElegantTextHeight(boolean elegant) {
3057        mTextPaint.setElegantTextHeight(elegant);
3058    }
3059
3060    /**
3061     * @return the extent by which text is currently being letter-spaced.
3062     * This will normally be 0.
3063     *
3064     * @see #setLetterSpacing(float)
3065     * @see Paint#setLetterSpacing
3066     */
3067    public float getLetterSpacing() {
3068        return mTextPaint.getLetterSpacing();
3069    }
3070
3071    /**
3072     * Sets text letter-spacing.  The value is in 'EM' units.  Typical values
3073     * for slight expansion will be around 0.05.  Negative values tighten text.
3074     *
3075     * @see #getLetterSpacing()
3076     * @see Paint#getLetterSpacing
3077     *
3078     * @attr ref android.R.styleable#TextView_letterSpacing
3079     */
3080    @android.view.RemotableViewMethod
3081    public void setLetterSpacing(float letterSpacing) {
3082        if (letterSpacing != mTextPaint.getLetterSpacing()) {
3083            mTextPaint.setLetterSpacing(letterSpacing);
3084
3085            if (mLayout != null) {
3086                nullLayouts();
3087                requestLayout();
3088                invalidate();
3089            }
3090        }
3091    }
3092
3093    /**
3094     * @return the currently set font feature settings.  Default is null.
3095     *
3096     * @see #setFontFeatureSettings(String)
3097     * @see Paint#setFontFeatureSettings
3098     */
3099    @Nullable
3100    public String getFontFeatureSettings() {
3101        return mTextPaint.getFontFeatureSettings();
3102    }
3103
3104    /**
3105     * Sets the break strategy for breaking paragraphs into lines. The default value for
3106     * TextView is {@link Layout#BREAK_STRATEGY_HIGH_QUALITY}, and the default value for
3107     * EditText is {@link Layout#BREAK_STRATEGY_SIMPLE}, the latter to avoid the
3108     * text "dancing" when being edited.
3109     *
3110     * @attr ref android.R.styleable#TextView_breakStrategy
3111     * @see #getBreakStrategy()
3112     */
3113    public void setBreakStrategy(@Layout.BreakStrategy int breakStrategy) {
3114        mBreakStrategy = breakStrategy;
3115        if (mLayout != null) {
3116            nullLayouts();
3117            requestLayout();
3118            invalidate();
3119        }
3120    }
3121
3122    /**
3123     * @return the currently set break strategy.
3124     *
3125     * @attr ref android.R.styleable#TextView_breakStrategy
3126     * @see #setBreakStrategy(int)
3127     */
3128    @Layout.BreakStrategy
3129    public int getBreakStrategy() {
3130        return mBreakStrategy;
3131    }
3132
3133    /**
3134     * Sets the hyphenation frequency. The default value for both TextView and EditText, which is set
3135     * from the theme, is {@link Layout#HYPHENATION_FREQUENCY_NORMAL}.
3136     *
3137     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3138     * @see #getHyphenationFrequency()
3139     */
3140    public void setHyphenationFrequency(@Layout.HyphenationFrequency int hyphenationFrequency) {
3141        mHyphenationFrequency = hyphenationFrequency;
3142        if (mLayout != null) {
3143            nullLayouts();
3144            requestLayout();
3145            invalidate();
3146        }
3147    }
3148
3149    /**
3150     * @return the currently set hyphenation frequency.
3151     *
3152     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3153     * @see #setHyphenationFrequency(int)
3154     */
3155    @Layout.HyphenationFrequency
3156    public int getHyphenationFrequency() {
3157        return mHyphenationFrequency;
3158    }
3159
3160    /**
3161     * Sets font feature settings.  The format is the same as the CSS
3162     * font-feature-settings attribute:
3163     * http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings
3164     *
3165     * @param fontFeatureSettings font feature settings represented as CSS compatible string
3166     * @see #getFontFeatureSettings()
3167     * @see Paint#getFontFeatureSettings
3168     *
3169     * @attr ref android.R.styleable#TextView_fontFeatureSettings
3170     */
3171    @android.view.RemotableViewMethod
3172    public void setFontFeatureSettings(@Nullable String fontFeatureSettings) {
3173        if (fontFeatureSettings != mTextPaint.getFontFeatureSettings()) {
3174            mTextPaint.setFontFeatureSettings(fontFeatureSettings);
3175
3176            if (mLayout != null) {
3177                nullLayouts();
3178                requestLayout();
3179                invalidate();
3180            }
3181        }
3182    }
3183
3184
3185    /**
3186     * Sets the text color for all the states (normal, selected,
3187     * focused) to be this color.
3188     *
3189     * @see #setTextColor(ColorStateList)
3190     * @see #getTextColors()
3191     *
3192     * @attr ref android.R.styleable#TextView_textColor
3193     */
3194    @android.view.RemotableViewMethod
3195    public void setTextColor(@ColorInt int color) {
3196        mTextColor = ColorStateList.valueOf(color);
3197        updateTextColors();
3198    }
3199
3200    /**
3201     * Sets the text color.
3202     *
3203     * @see #setTextColor(int)
3204     * @see #getTextColors()
3205     * @see #setHintTextColor(ColorStateList)
3206     * @see #setLinkTextColor(ColorStateList)
3207     *
3208     * @attr ref android.R.styleable#TextView_textColor
3209     */
3210    public void setTextColor(ColorStateList colors) {
3211        if (colors == null) {
3212            throw new NullPointerException();
3213        }
3214
3215        mTextColor = colors;
3216        updateTextColors();
3217    }
3218
3219    /**
3220     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
3221     *
3222     * @see #setTextColor(ColorStateList)
3223     * @see #setTextColor(int)
3224     *
3225     * @attr ref android.R.styleable#TextView_textColor
3226     */
3227    public final ColorStateList getTextColors() {
3228        return mTextColor;
3229    }
3230
3231    /**
3232     * <p>Return the current color selected for normal text.</p>
3233     *
3234     * @return Returns the current text color.
3235     */
3236    @ColorInt
3237    public final int getCurrentTextColor() {
3238        return mCurTextColor;
3239    }
3240
3241    /**
3242     * Sets the color used to display the selection highlight.
3243     *
3244     * @attr ref android.R.styleable#TextView_textColorHighlight
3245     */
3246    @android.view.RemotableViewMethod
3247    public void setHighlightColor(@ColorInt int color) {
3248        if (mHighlightColor != color) {
3249            mHighlightColor = color;
3250            invalidate();
3251        }
3252    }
3253
3254    /**
3255     * @return the color used to display the selection highlight
3256     *
3257     * @see #setHighlightColor(int)
3258     *
3259     * @attr ref android.R.styleable#TextView_textColorHighlight
3260     */
3261    @ColorInt
3262    public int getHighlightColor() {
3263        return mHighlightColor;
3264    }
3265
3266    /**
3267     * Sets whether the soft input method will be made visible when this
3268     * TextView gets focused. The default is true.
3269     */
3270    @android.view.RemotableViewMethod
3271    public final void setShowSoftInputOnFocus(boolean show) {
3272        createEditorIfNeeded();
3273        mEditor.mShowSoftInputOnFocus = show;
3274    }
3275
3276    /**
3277     * Returns whether the soft input method will be made visible when this
3278     * TextView gets focused. The default is true.
3279     */
3280    public final boolean getShowSoftInputOnFocus() {
3281        // When there is no Editor, return default true value
3282        return mEditor == null || mEditor.mShowSoftInputOnFocus;
3283    }
3284
3285    /**
3286     * Gives the text a shadow of the specified blur radius and color, the specified
3287     * distance from its drawn position.
3288     * <p>
3289     * The text shadow produced does not interact with the properties on view
3290     * that are responsible for real time shadows,
3291     * {@link View#getElevation() elevation} and
3292     * {@link View#getTranslationZ() translationZ}.
3293     *
3294     * @see Paint#setShadowLayer(float, float, float, int)
3295     *
3296     * @attr ref android.R.styleable#TextView_shadowColor
3297     * @attr ref android.R.styleable#TextView_shadowDx
3298     * @attr ref android.R.styleable#TextView_shadowDy
3299     * @attr ref android.R.styleable#TextView_shadowRadius
3300     */
3301    public void setShadowLayer(float radius, float dx, float dy, int color) {
3302        mTextPaint.setShadowLayer(radius, dx, dy, color);
3303
3304        mShadowRadius = radius;
3305        mShadowDx = dx;
3306        mShadowDy = dy;
3307        mShadowColor = color;
3308
3309        // Will change text clip region
3310        if (mEditor != null) mEditor.invalidateTextDisplayList();
3311        invalidate();
3312    }
3313
3314    /**
3315     * Gets the radius of the shadow layer.
3316     *
3317     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
3318     *
3319     * @see #setShadowLayer(float, float, float, int)
3320     *
3321     * @attr ref android.R.styleable#TextView_shadowRadius
3322     */
3323    public float getShadowRadius() {
3324        return mShadowRadius;
3325    }
3326
3327    /**
3328     * @return the horizontal offset of the shadow layer
3329     *
3330     * @see #setShadowLayer(float, float, float, int)
3331     *
3332     * @attr ref android.R.styleable#TextView_shadowDx
3333     */
3334    public float getShadowDx() {
3335        return mShadowDx;
3336    }
3337
3338    /**
3339     * @return the vertical offset of the shadow layer
3340     *
3341     * @see #setShadowLayer(float, float, float, int)
3342     *
3343     * @attr ref android.R.styleable#TextView_shadowDy
3344     */
3345    public float getShadowDy() {
3346        return mShadowDy;
3347    }
3348
3349    /**
3350     * @return the color of the shadow layer
3351     *
3352     * @see #setShadowLayer(float, float, float, int)
3353     *
3354     * @attr ref android.R.styleable#TextView_shadowColor
3355     */
3356    @ColorInt
3357    public int getShadowColor() {
3358        return mShadowColor;
3359    }
3360
3361    /**
3362     * @return the base paint used for the text.  Please use this only to
3363     * consult the Paint's properties and not to change them.
3364     */
3365    public TextPaint getPaint() {
3366        return mTextPaint;
3367    }
3368
3369    /**
3370     * Sets the autolink mask of the text.  See {@link
3371     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
3372     * possible values.
3373     *
3374     * @attr ref android.R.styleable#TextView_autoLink
3375     */
3376    @android.view.RemotableViewMethod
3377    public final void setAutoLinkMask(int mask) {
3378        mAutoLinkMask = mask;
3379    }
3380
3381    /**
3382     * Sets whether the movement method will automatically be set to {@link LinkMovementMethod}
3383     * after {@link #setText} or {@link #append} is called. The movement method is set if one of the
3384     * following is true:
3385     * <ul>
3386     * <li>{@link #setAutoLinkMask} has been set to nonzero and links are detected in
3387     * {@link #setText} or {@link #append}.
3388     * <li>The input for {@link #setText} or {@link #append} contains a {@link ClickableSpan}.
3389     * </ul>
3390     *
3391     * <p>This function does not have an immediate effect, movement method will be set only after a
3392     * call to {@link #setText} or {@link #append}. The default is true.</p>
3393     *
3394     * @attr ref android.R.styleable#TextView_linksClickable
3395     */
3396    @android.view.RemotableViewMethod
3397    public final void setLinksClickable(boolean whether) {
3398        mLinksClickable = whether;
3399    }
3400
3401    /**
3402     * Returns whether the movement method will automatically be set to {@link LinkMovementMethod}
3403     * after {@link #setText} or {@link #append} is called.
3404     *
3405     * See {@link #setLinksClickable} for details.
3406     *
3407     * <p>The default is true.</p>
3408     *
3409     * @see #setLinksClickable
3410     *
3411     * @attr ref android.R.styleable#TextView_linksClickable
3412     */
3413    public final boolean getLinksClickable() {
3414        return mLinksClickable;
3415    }
3416
3417    /**
3418     * Returns the list of URLSpans attached to the text
3419     * (by {@link Linkify} or otherwise) if any.  You can call
3420     * {@link URLSpan#getURL} on them to find where they link to
3421     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
3422     * to find the region of the text they are attached to.
3423     */
3424    public URLSpan[] getUrls() {
3425        if (mText instanceof Spanned) {
3426            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
3427        } else {
3428            return new URLSpan[0];
3429        }
3430    }
3431
3432    /**
3433     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
3434     * TextView.
3435     *
3436     * @see #setHintTextColor(ColorStateList)
3437     * @see #getHintTextColors()
3438     * @see #setTextColor(int)
3439     *
3440     * @attr ref android.R.styleable#TextView_textColorHint
3441     */
3442    @android.view.RemotableViewMethod
3443    public final void setHintTextColor(@ColorInt int color) {
3444        mHintTextColor = ColorStateList.valueOf(color);
3445        updateTextColors();
3446    }
3447
3448    /**
3449     * Sets the color of the hint text.
3450     *
3451     * @see #getHintTextColors()
3452     * @see #setHintTextColor(int)
3453     * @see #setTextColor(ColorStateList)
3454     * @see #setLinkTextColor(ColorStateList)
3455     *
3456     * @attr ref android.R.styleable#TextView_textColorHint
3457     */
3458    public final void setHintTextColor(ColorStateList colors) {
3459        mHintTextColor = colors;
3460        updateTextColors();
3461    }
3462
3463    /**
3464     * @return the color of the hint text, for the different states of this TextView.
3465     *
3466     * @see #setHintTextColor(ColorStateList)
3467     * @see #setHintTextColor(int)
3468     * @see #setTextColor(ColorStateList)
3469     * @see #setLinkTextColor(ColorStateList)
3470     *
3471     * @attr ref android.R.styleable#TextView_textColorHint
3472     */
3473    public final ColorStateList getHintTextColors() {
3474        return mHintTextColor;
3475    }
3476
3477    /**
3478     * <p>Return the current color selected to paint the hint text.</p>
3479     *
3480     * @return Returns the current hint text color.
3481     */
3482    @ColorInt
3483    public final int getCurrentHintTextColor() {
3484        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
3485    }
3486
3487    /**
3488     * Sets the color of links in the text.
3489     *
3490     * @see #setLinkTextColor(ColorStateList)
3491     * @see #getLinkTextColors()
3492     *
3493     * @attr ref android.R.styleable#TextView_textColorLink
3494     */
3495    @android.view.RemotableViewMethod
3496    public final void setLinkTextColor(@ColorInt int color) {
3497        mLinkTextColor = ColorStateList.valueOf(color);
3498        updateTextColors();
3499    }
3500
3501    /**
3502     * Sets the color of links in the text.
3503     *
3504     * @see #setLinkTextColor(int)
3505     * @see #getLinkTextColors()
3506     * @see #setTextColor(ColorStateList)
3507     * @see #setHintTextColor(ColorStateList)
3508     *
3509     * @attr ref android.R.styleable#TextView_textColorLink
3510     */
3511    public final void setLinkTextColor(ColorStateList colors) {
3512        mLinkTextColor = colors;
3513        updateTextColors();
3514    }
3515
3516    /**
3517     * @return the list of colors used to paint the links in the text, for the different states of
3518     * this TextView
3519     *
3520     * @see #setLinkTextColor(ColorStateList)
3521     * @see #setLinkTextColor(int)
3522     *
3523     * @attr ref android.R.styleable#TextView_textColorLink
3524     */
3525    public final ColorStateList getLinkTextColors() {
3526        return mLinkTextColor;
3527    }
3528
3529    /**
3530     * Sets the horizontal alignment of the text and the
3531     * vertical gravity that will be used when there is extra space
3532     * in the TextView beyond what is required for the text itself.
3533     *
3534     * @see android.view.Gravity
3535     * @attr ref android.R.styleable#TextView_gravity
3536     */
3537    public void setGravity(int gravity) {
3538        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
3539            gravity |= Gravity.START;
3540        }
3541        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
3542            gravity |= Gravity.TOP;
3543        }
3544
3545        boolean newLayout = false;
3546
3547        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
3548            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
3549            newLayout = true;
3550        }
3551
3552        if (gravity != mGravity) {
3553            invalidate();
3554        }
3555
3556        mGravity = gravity;
3557
3558        if (mLayout != null && newLayout) {
3559            // XXX this is heavy-handed because no actual content changes.
3560            int want = mLayout.getWidth();
3561            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
3562
3563            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
3564                          mRight - mLeft - getCompoundPaddingLeft() -
3565                          getCompoundPaddingRight(), true);
3566        }
3567    }
3568
3569    /**
3570     * Returns the horizontal and vertical alignment of this TextView.
3571     *
3572     * @see android.view.Gravity
3573     * @attr ref android.R.styleable#TextView_gravity
3574     */
3575    public int getGravity() {
3576        return mGravity;
3577    }
3578
3579    /**
3580     * @return the flags on the Paint being used to display the text.
3581     * @see Paint#getFlags
3582     */
3583    public int getPaintFlags() {
3584        return mTextPaint.getFlags();
3585    }
3586
3587    /**
3588     * Sets flags on the Paint being used to display the text and
3589     * reflows the text if they are different from the old flags.
3590     * @see Paint#setFlags
3591     */
3592    @android.view.RemotableViewMethod
3593    public void setPaintFlags(int flags) {
3594        if (mTextPaint.getFlags() != flags) {
3595            mTextPaint.setFlags(flags);
3596
3597            if (mLayout != null) {
3598                nullLayouts();
3599                requestLayout();
3600                invalidate();
3601            }
3602        }
3603    }
3604
3605    /**
3606     * Sets whether the text should be allowed to be wider than the
3607     * View is.  If false, it will be wrapped to the width of the View.
3608     *
3609     * @attr ref android.R.styleable#TextView_scrollHorizontally
3610     */
3611    public void setHorizontallyScrolling(boolean whether) {
3612        if (mHorizontallyScrolling != whether) {
3613            mHorizontallyScrolling = whether;
3614
3615            if (mLayout != null) {
3616                nullLayouts();
3617                requestLayout();
3618                invalidate();
3619            }
3620        }
3621    }
3622
3623    /**
3624     * Returns whether the text is allowed to be wider than the View is.
3625     * If false, the text will be wrapped to the width of the View.
3626     *
3627     * @attr ref android.R.styleable#TextView_scrollHorizontally
3628     * @hide
3629     */
3630    public boolean getHorizontallyScrolling() {
3631        return mHorizontallyScrolling;
3632    }
3633
3634    /**
3635     * Makes the TextView at least this many lines tall.
3636     *
3637     * Setting this value overrides any other (minimum) height setting. A single line TextView will
3638     * set this value to 1.
3639     *
3640     * @see #getMinLines()
3641     *
3642     * @attr ref android.R.styleable#TextView_minLines
3643     */
3644    @android.view.RemotableViewMethod
3645    public void setMinLines(int minlines) {
3646        mMinimum = minlines;
3647        mMinMode = LINES;
3648
3649        requestLayout();
3650        invalidate();
3651    }
3652
3653    /**
3654     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
3655     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
3656     *
3657     * @see #setMinLines(int)
3658     *
3659     * @attr ref android.R.styleable#TextView_minLines
3660     */
3661    public int getMinLines() {
3662        return mMinMode == LINES ? mMinimum : -1;
3663    }
3664
3665    /**
3666     * Makes the TextView at least this many pixels tall.
3667     *
3668     * Setting this value overrides any other (minimum) number of lines setting.
3669     *
3670     * @attr ref android.R.styleable#TextView_minHeight
3671     */
3672    @android.view.RemotableViewMethod
3673    public void setMinHeight(int minHeight) {
3674        mMinimum = minHeight;
3675        mMinMode = PIXELS;
3676
3677        requestLayout();
3678        invalidate();
3679    }
3680
3681    /**
3682     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
3683     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
3684     *
3685     * @see #setMinHeight(int)
3686     *
3687     * @attr ref android.R.styleable#TextView_minHeight
3688     */
3689    public int getMinHeight() {
3690        return mMinMode == PIXELS ? mMinimum : -1;
3691    }
3692
3693    /**
3694     * Makes the TextView at most this many lines tall.
3695     *
3696     * Setting this value overrides any other (maximum) height setting.
3697     *
3698     * @attr ref android.R.styleable#TextView_maxLines
3699     */
3700    @android.view.RemotableViewMethod
3701    public void setMaxLines(int maxlines) {
3702        mMaximum = maxlines;
3703        mMaxMode = LINES;
3704
3705        requestLayout();
3706        invalidate();
3707    }
3708
3709    /**
3710     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
3711     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
3712     *
3713     * @see #setMaxLines(int)
3714     *
3715     * @attr ref android.R.styleable#TextView_maxLines
3716     */
3717    public int getMaxLines() {
3718        return mMaxMode == LINES ? mMaximum : -1;
3719    }
3720
3721    /**
3722     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
3723     * {@link #setMaxLines(int)} method.
3724     *
3725     * Setting this value overrides any other (maximum) number of lines setting.
3726     *
3727     * @attr ref android.R.styleable#TextView_maxHeight
3728     */
3729    @android.view.RemotableViewMethod
3730    public void setMaxHeight(int maxHeight) {
3731        mMaximum = maxHeight;
3732        mMaxMode = PIXELS;
3733
3734        requestLayout();
3735        invalidate();
3736    }
3737
3738    /**
3739     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
3740     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
3741     *
3742     * @see #setMaxHeight(int)
3743     *
3744     * @attr ref android.R.styleable#TextView_maxHeight
3745     */
3746    public int getMaxHeight() {
3747        return mMaxMode == PIXELS ? mMaximum : -1;
3748    }
3749
3750    /**
3751     * Makes the TextView exactly this many lines tall.
3752     *
3753     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3754     * height setting. A single line TextView will set this value to 1.
3755     *
3756     * @attr ref android.R.styleable#TextView_lines
3757     */
3758    @android.view.RemotableViewMethod
3759    public void setLines(int lines) {
3760        mMaximum = mMinimum = lines;
3761        mMaxMode = mMinMode = LINES;
3762
3763        requestLayout();
3764        invalidate();
3765    }
3766
3767    /**
3768     * Makes the TextView exactly this many pixels tall.
3769     * You could do the same thing by specifying this number in the
3770     * LayoutParams.
3771     *
3772     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3773     * height setting.
3774     *
3775     * @attr ref android.R.styleable#TextView_height
3776     */
3777    @android.view.RemotableViewMethod
3778    public void setHeight(int pixels) {
3779        mMaximum = mMinimum = pixels;
3780        mMaxMode = mMinMode = PIXELS;
3781
3782        requestLayout();
3783        invalidate();
3784    }
3785
3786    /**
3787     * Makes the TextView at least this many ems wide
3788     *
3789     * @attr ref android.R.styleable#TextView_minEms
3790     */
3791    @android.view.RemotableViewMethod
3792    public void setMinEms(int minems) {
3793        mMinWidth = minems;
3794        mMinWidthMode = EMS;
3795
3796        requestLayout();
3797        invalidate();
3798    }
3799
3800    /**
3801     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
3802     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
3803     *
3804     * @see #setMinEms(int)
3805     * @see #setEms(int)
3806     *
3807     * @attr ref android.R.styleable#TextView_minEms
3808     */
3809    public int getMinEms() {
3810        return mMinWidthMode == EMS ? mMinWidth : -1;
3811    }
3812
3813    /**
3814     * Makes the TextView at least this many pixels wide
3815     *
3816     * @attr ref android.R.styleable#TextView_minWidth
3817     */
3818    @android.view.RemotableViewMethod
3819    public void setMinWidth(int minpixels) {
3820        mMinWidth = minpixels;
3821        mMinWidthMode = PIXELS;
3822
3823        requestLayout();
3824        invalidate();
3825    }
3826
3827    /**
3828     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
3829     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
3830     *
3831     * @see #setMinWidth(int)
3832     * @see #setWidth(int)
3833     *
3834     * @attr ref android.R.styleable#TextView_minWidth
3835     */
3836    public int getMinWidth() {
3837        return mMinWidthMode == PIXELS ? mMinWidth : -1;
3838    }
3839
3840    /**
3841     * Makes the TextView at most this many ems wide
3842     *
3843     * @attr ref android.R.styleable#TextView_maxEms
3844     */
3845    @android.view.RemotableViewMethod
3846    public void setMaxEms(int maxems) {
3847        mMaxWidth = maxems;
3848        mMaxWidthMode = EMS;
3849
3850        requestLayout();
3851        invalidate();
3852    }
3853
3854    /**
3855     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3856     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3857     *
3858     * @see #setMaxEms(int)
3859     * @see #setEms(int)
3860     *
3861     * @attr ref android.R.styleable#TextView_maxEms
3862     */
3863    public int getMaxEms() {
3864        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3865    }
3866
3867    /**
3868     * Makes the TextView at most this many pixels wide
3869     *
3870     * @attr ref android.R.styleable#TextView_maxWidth
3871     */
3872    @android.view.RemotableViewMethod
3873    public void setMaxWidth(int maxpixels) {
3874        mMaxWidth = maxpixels;
3875        mMaxWidthMode = PIXELS;
3876
3877        requestLayout();
3878        invalidate();
3879    }
3880
3881    /**
3882     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3883     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3884     *
3885     * @see #setMaxWidth(int)
3886     * @see #setWidth(int)
3887     *
3888     * @attr ref android.R.styleable#TextView_maxWidth
3889     */
3890    public int getMaxWidth() {
3891        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3892    }
3893
3894    /**
3895     * Makes the TextView exactly this many ems wide
3896     *
3897     * @see #setMaxEms(int)
3898     * @see #setMinEms(int)
3899     * @see #getMinEms()
3900     * @see #getMaxEms()
3901     *
3902     * @attr ref android.R.styleable#TextView_ems
3903     */
3904    @android.view.RemotableViewMethod
3905    public void setEms(int ems) {
3906        mMaxWidth = mMinWidth = ems;
3907        mMaxWidthMode = mMinWidthMode = EMS;
3908
3909        requestLayout();
3910        invalidate();
3911    }
3912
3913    /**
3914     * Makes the TextView exactly this many pixels wide.
3915     * You could do the same thing by specifying this number in the
3916     * LayoutParams.
3917     *
3918     * @see #setMaxWidth(int)
3919     * @see #setMinWidth(int)
3920     * @see #getMinWidth()
3921     * @see #getMaxWidth()
3922     *
3923     * @attr ref android.R.styleable#TextView_width
3924     */
3925    @android.view.RemotableViewMethod
3926    public void setWidth(int pixels) {
3927        mMaxWidth = mMinWidth = pixels;
3928        mMaxWidthMode = mMinWidthMode = PIXELS;
3929
3930        requestLayout();
3931        invalidate();
3932    }
3933
3934    /**
3935     * Sets line spacing for this TextView.  Each line will have its height
3936     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3937     *
3938     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3939     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3940     */
3941    public void setLineSpacing(float add, float mult) {
3942        if (mSpacingAdd != add || mSpacingMult != mult) {
3943            mSpacingAdd = add;
3944            mSpacingMult = mult;
3945
3946            if (mLayout != null) {
3947                nullLayouts();
3948                requestLayout();
3949                invalidate();
3950            }
3951        }
3952    }
3953
3954    /**
3955     * Gets the line spacing multiplier
3956     *
3957     * @return the value by which each line's height is multiplied to get its actual height.
3958     *
3959     * @see #setLineSpacing(float, float)
3960     * @see #getLineSpacingExtra()
3961     *
3962     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3963     */
3964    public float getLineSpacingMultiplier() {
3965        return mSpacingMult;
3966    }
3967
3968    /**
3969     * Gets the line spacing extra space
3970     *
3971     * @return the extra space that is added to the height of each lines of this TextView.
3972     *
3973     * @see #setLineSpacing(float, float)
3974     * @see #getLineSpacingMultiplier()
3975     *
3976     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3977     */
3978    public float getLineSpacingExtra() {
3979        return mSpacingAdd;
3980    }
3981
3982    /**
3983     * Convenience method: Append the specified text to the TextView's
3984     * display buffer, upgrading it to BufferType.EDITABLE if it was
3985     * not already editable.
3986     */
3987    public final void append(CharSequence text) {
3988        append(text, 0, text.length());
3989    }
3990
3991    /**
3992     * Convenience method: Append the specified text slice to the TextView's
3993     * display buffer, upgrading it to BufferType.EDITABLE if it was
3994     * not already editable.
3995     */
3996    public void append(CharSequence text, int start, int end) {
3997        if (!(mText instanceof Editable)) {
3998            setText(mText, BufferType.EDITABLE);
3999        }
4000
4001        ((Editable) mText).append(text, start, end);
4002
4003        boolean hasClickableSpans = false;
4004        if (mAutoLinkMask != 0) {
4005            hasClickableSpans = Linkify.addLinks((Spannable) mText, mAutoLinkMask);
4006        } else if (mLinksClickable && text instanceof Spanned) {
4007            ClickableSpan[] clickableSpans =
4008                    ((Spanned) text).getSpans(0, text.length(), ClickableSpan.class);
4009            hasClickableSpans = clickableSpans != null && clickableSpans.length > 0;
4010        }
4011
4012        // Do not change the movement method for text that supports text selection as it
4013        // would prevent an arbitrary cursor displacement.
4014        if (hasClickableSpans && mLinksClickable && !textCanBeSelected()) {
4015            setMovementMethod(LinkMovementMethod.getInstance());
4016        }
4017    }
4018
4019    private void updateTextColors() {
4020        boolean inval = false;
4021        int color = mTextColor.getColorForState(getDrawableState(), 0);
4022        if (color != mCurTextColor) {
4023            mCurTextColor = color;
4024            inval = true;
4025        }
4026        if (mLinkTextColor != null) {
4027            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
4028            if (color != mTextPaint.linkColor) {
4029                mTextPaint.linkColor = color;
4030                inval = true;
4031            }
4032        }
4033        if (mHintTextColor != null) {
4034            color = mHintTextColor.getColorForState(getDrawableState(), 0);
4035            if (color != mCurHintTextColor) {
4036                mCurHintTextColor = color;
4037                if (mText.length() == 0) {
4038                    inval = true;
4039                }
4040            }
4041        }
4042        if (inval) {
4043            // Text needs to be redrawn with the new color
4044            if (mEditor != null) mEditor.invalidateTextDisplayList();
4045            invalidate();
4046        }
4047    }
4048
4049    @Override
4050    protected void drawableStateChanged() {
4051        super.drawableStateChanged();
4052
4053        if (mTextColor != null && mTextColor.isStateful()
4054                || (mHintTextColor != null && mHintTextColor.isStateful())
4055                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
4056            updateTextColors();
4057        }
4058
4059        if (mDrawables != null) {
4060            final int[] state = getDrawableState();
4061            for (Drawable dr : mDrawables.mShowing) {
4062                if (dr != null && dr.isStateful() && dr.setState(state)) {
4063                    invalidateDrawable(dr);
4064                }
4065            }
4066        }
4067    }
4068
4069    @Override
4070    public void drawableHotspotChanged(float x, float y) {
4071        super.drawableHotspotChanged(x, y);
4072
4073        if (mDrawables != null) {
4074            for (Drawable dr : mDrawables.mShowing) {
4075                if (dr != null) {
4076                    dr.setHotspot(x, y);
4077                }
4078            }
4079        }
4080    }
4081
4082    @Override
4083    public Parcelable onSaveInstanceState() {
4084        Parcelable superState = super.onSaveInstanceState();
4085
4086        // Save state if we are forced to
4087        boolean save = mFreezesText;
4088        int start = 0;
4089        int end = 0;
4090
4091        if (mText != null) {
4092            start = getSelectionStart();
4093            end = getSelectionEnd();
4094            if (start >= 0 || end >= 0) {
4095                // Or save state if there is a selection
4096                save = true;
4097            }
4098        }
4099
4100        if (save) {
4101            SavedState ss = new SavedState(superState);
4102            // XXX Should also save the current scroll position!
4103            ss.selStart = start;
4104            ss.selEnd = end;
4105
4106            if (mText instanceof Spanned) {
4107                Spannable sp = new SpannableStringBuilder(mText);
4108
4109                if (mEditor != null) {
4110                    removeMisspelledSpans(sp);
4111                    sp.removeSpan(mEditor.mSuggestionRangeSpan);
4112                }
4113
4114                ss.text = sp;
4115            } else {
4116                ss.text = mText.toString();
4117            }
4118
4119            if (isFocused() && start >= 0 && end >= 0) {
4120                ss.frozenWithFocus = true;
4121            }
4122
4123            ss.error = getError();
4124
4125            if (mEditor != null) {
4126                ss.editorState = mEditor.saveInstanceState();
4127            }
4128            return ss;
4129        }
4130
4131        return superState;
4132    }
4133
4134    void removeMisspelledSpans(Spannable spannable) {
4135        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
4136                SuggestionSpan.class);
4137        for (int i = 0; i < suggestionSpans.length; i++) {
4138            int flags = suggestionSpans[i].getFlags();
4139            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
4140                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
4141                spannable.removeSpan(suggestionSpans[i]);
4142            }
4143        }
4144    }
4145
4146    @Override
4147    public void onRestoreInstanceState(Parcelable state) {
4148        if (!(state instanceof SavedState)) {
4149            super.onRestoreInstanceState(state);
4150            return;
4151        }
4152
4153        SavedState ss = (SavedState)state;
4154        super.onRestoreInstanceState(ss.getSuperState());
4155
4156        // XXX restore buffer type too, as well as lots of other stuff
4157        if (ss.text != null) {
4158            setText(ss.text);
4159        }
4160
4161        if (ss.selStart >= 0 && ss.selEnd >= 0) {
4162            if (mText instanceof Spannable) {
4163                int len = mText.length();
4164
4165                if (ss.selStart > len || ss.selEnd > len) {
4166                    String restored = "";
4167
4168                    if (ss.text != null) {
4169                        restored = "(restored) ";
4170                    }
4171
4172                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
4173                          "/" + ss.selEnd + " out of range for " + restored +
4174                          "text " + mText);
4175                } else {
4176                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
4177
4178                    if (ss.frozenWithFocus) {
4179                        createEditorIfNeeded();
4180                        mEditor.mFrozenWithFocus = true;
4181                    }
4182                }
4183            }
4184        }
4185
4186        if (ss.error != null) {
4187            final CharSequence error = ss.error;
4188            // Display the error later, after the first layout pass
4189            post(new Runnable() {
4190                public void run() {
4191                    if (mEditor == null || !mEditor.mErrorWasChanged) {
4192                        setError(error);
4193                    }
4194                }
4195            });
4196        }
4197
4198        if (ss.editorState != null) {
4199            createEditorIfNeeded();
4200            mEditor.restoreInstanceState(ss.editorState);
4201        }
4202    }
4203
4204    /**
4205     * Control whether this text view saves its entire text contents when
4206     * freezing to an icicle, in addition to dynamic state such as cursor
4207     * position.  By default this is false, not saving the text.  Set to true
4208     * if the text in the text view is not being saved somewhere else in
4209     * persistent storage (such as in a content provider) so that if the
4210     * view is later thawed the user will not lose their data.
4211     *
4212     * @param freezesText Controls whether a frozen icicle should include the
4213     * entire text data: true to include it, false to not.
4214     *
4215     * @attr ref android.R.styleable#TextView_freezesText
4216     */
4217    @android.view.RemotableViewMethod
4218    public void setFreezesText(boolean freezesText) {
4219        mFreezesText = freezesText;
4220    }
4221
4222    /**
4223     * Return whether this text view is including its entire text contents
4224     * in frozen icicles.
4225     *
4226     * @return Returns true if text is included, false if it isn't.
4227     *
4228     * @see #setFreezesText
4229     */
4230    public boolean getFreezesText() {
4231        return mFreezesText;
4232    }
4233
4234    ///////////////////////////////////////////////////////////////////////////
4235
4236    /**
4237     * Sets the Factory used to create new Editables.
4238     */
4239    public final void setEditableFactory(Editable.Factory factory) {
4240        mEditableFactory = factory;
4241        setText(mText);
4242    }
4243
4244    /**
4245     * Sets the Factory used to create new Spannables.
4246     */
4247    public final void setSpannableFactory(Spannable.Factory factory) {
4248        mSpannableFactory = factory;
4249        setText(mText);
4250    }
4251
4252    /**
4253     * Sets the string value of the TextView. TextView <em>does not</em> accept
4254     * HTML-like formatting, which you can do with text strings in XML resource files.
4255     * To style your strings, attach android.text.style.* objects to a
4256     * {@link android.text.SpannableString SpannableString}, or see the
4257     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
4258     * Available Resource Types</a> documentation for an example of setting
4259     * formatted text in the XML resource file.
4260     *
4261     * @attr ref android.R.styleable#TextView_text
4262     */
4263    @android.view.RemotableViewMethod
4264    public final void setText(CharSequence text) {
4265        setText(text, mBufferType);
4266    }
4267
4268    /**
4269     * Like {@link #setText(CharSequence)},
4270     * except that the cursor position (if any) is retained in the new text.
4271     *
4272     * @param text The new text to place in the text view.
4273     *
4274     * @see #setText(CharSequence)
4275     */
4276    @android.view.RemotableViewMethod
4277    public final void setTextKeepState(CharSequence text) {
4278        setTextKeepState(text, mBufferType);
4279    }
4280
4281    /**
4282     * Sets the text that this TextView is to display (see
4283     * {@link #setText(CharSequence)}) and also sets whether it is stored
4284     * in a styleable/spannable buffer and whether it is editable.
4285     *
4286     * @attr ref android.R.styleable#TextView_text
4287     * @attr ref android.R.styleable#TextView_bufferType
4288     */
4289    public void setText(CharSequence text, BufferType type) {
4290        setText(text, type, true, 0);
4291
4292        if (mCharWrapper != null) {
4293            mCharWrapper.mChars = null;
4294        }
4295    }
4296
4297    private void setText(CharSequence text, BufferType type,
4298                         boolean notifyBefore, int oldlen) {
4299        if (text == null) {
4300            text = "";
4301        }
4302
4303        // If suggestions are not enabled, remove the suggestion spans from the text
4304        if (!isSuggestionsEnabled()) {
4305            text = removeSuggestionSpans(text);
4306        }
4307
4308        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
4309
4310        if (text instanceof Spanned &&
4311            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
4312            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
4313                setHorizontalFadingEdgeEnabled(true);
4314                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
4315            } else {
4316                setHorizontalFadingEdgeEnabled(false);
4317                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
4318            }
4319            setEllipsize(TextUtils.TruncateAt.MARQUEE);
4320        }
4321
4322        int n = mFilters.length;
4323        for (int i = 0; i < n; i++) {
4324            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
4325            if (out != null) {
4326                text = out;
4327            }
4328        }
4329
4330        if (notifyBefore) {
4331            if (mText != null) {
4332                oldlen = mText.length();
4333                sendBeforeTextChanged(mText, 0, oldlen, text.length());
4334            } else {
4335                sendBeforeTextChanged("", 0, 0, text.length());
4336            }
4337        }
4338
4339        boolean needEditableForNotification = false;
4340
4341        if (mListeners != null && mListeners.size() != 0) {
4342            needEditableForNotification = true;
4343        }
4344
4345        if (type == BufferType.EDITABLE || getKeyListener() != null ||
4346                needEditableForNotification) {
4347            createEditorIfNeeded();
4348            mEditor.forgetUndoRedo();
4349            Editable t = mEditableFactory.newEditable(text);
4350            text = t;
4351            setFilters(t, mFilters);
4352            InputMethodManager imm = InputMethodManager.peekInstance();
4353            if (imm != null) imm.restartInput(this);
4354        } else if (type == BufferType.SPANNABLE || mMovement != null) {
4355            text = mSpannableFactory.newSpannable(text);
4356        } else if (!(text instanceof CharWrapper)) {
4357            text = TextUtils.stringOrSpannedString(text);
4358        }
4359
4360        boolean hasClickableSpans = false;
4361        if (mAutoLinkMask != 0) {
4362            Spannable s2;
4363
4364            if (type == BufferType.EDITABLE || text instanceof Spannable) {
4365                s2 = (Spannable) text;
4366            } else {
4367                s2 = mSpannableFactory.newSpannable(text);
4368            }
4369
4370            hasClickableSpans = Linkify.addLinks(s2, mAutoLinkMask);
4371            if (hasClickableSpans) {
4372                text = s2;
4373            }
4374        } else if (mLinksClickable && text instanceof Spanned) {
4375            ClickableSpan[] clickableSpans =
4376                    ((Spanned) text).getSpans(0, text.length(), ClickableSpan.class);
4377            hasClickableSpans = clickableSpans != null && clickableSpans.length > 0;
4378            if (hasClickableSpans && !(text instanceof Spannable)) {
4379                text = mSpannableFactory.newSpannable(text);
4380            }
4381        }
4382
4383        if (hasClickableSpans) {
4384            type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
4385            /*
4386             * We must go ahead and set the text before changing the
4387             * movement method, because setMovementMethod() may call
4388             * setText() again to try to upgrade the buffer type.
4389             */
4390            mText = text;
4391
4392            // Do not change the movement method for text that supports text selection as it
4393            // would prevent an arbitrary cursor displacement.
4394            if (mLinksClickable && !textCanBeSelected()) {
4395                setMovementMethod(LinkMovementMethod.getInstance());
4396            }
4397        }
4398
4399        mBufferType = type;
4400        mText = text;
4401
4402        if (mTransformation == null) {
4403            mTransformed = text;
4404        } else {
4405            mTransformed = mTransformation.getTransformation(text, this);
4406        }
4407
4408        final int textLength = text.length();
4409
4410        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
4411            Spannable sp = (Spannable) text;
4412
4413            // Remove any ChangeWatchers that might have come from other TextViews.
4414            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
4415            final int count = watchers.length;
4416            for (int i = 0; i < count; i++) {
4417                sp.removeSpan(watchers[i]);
4418            }
4419
4420            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
4421
4422            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
4423                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
4424
4425            if (mEditor != null) mEditor.addSpanWatchers(sp);
4426
4427            if (mTransformation != null) {
4428                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
4429            }
4430
4431            if (mMovement != null) {
4432                mMovement.initialize(this, (Spannable) text);
4433
4434                /*
4435                 * Initializing the movement method will have set the
4436                 * selection, so reset mSelectionMoved to keep that from
4437                 * interfering with the normal on-focus selection-setting.
4438                 */
4439                if (mEditor != null) mEditor.mSelectionMoved = false;
4440            }
4441        }
4442
4443        if (mLayout != null) {
4444            checkForRelayout();
4445        }
4446
4447        sendOnTextChanged(text, 0, oldlen, textLength);
4448        onTextChanged(text, 0, oldlen, textLength);
4449
4450        notifyViewAccessibilityStateChangedIfNeeded(AccessibilityEvent.CONTENT_CHANGE_TYPE_TEXT);
4451
4452        if (needEditableForNotification) {
4453            sendAfterTextChanged((Editable) text);
4454        }
4455
4456        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
4457        if (mEditor != null) mEditor.prepareCursorControllers();
4458    }
4459
4460    /**
4461     * Sets the TextView to display the specified slice of the specified
4462     * char array.  You must promise that you will not change the contents
4463     * of the array except for right before another call to setText(),
4464     * since the TextView has no way to know that the text
4465     * has changed and that it needs to invalidate and re-layout.
4466     */
4467    public final void setText(char[] text, int start, int len) {
4468        int oldlen = 0;
4469
4470        if (start < 0 || len < 0 || start + len > text.length) {
4471            throw new IndexOutOfBoundsException(start + ", " + len);
4472        }
4473
4474        /*
4475         * We must do the before-notification here ourselves because if
4476         * the old text is a CharWrapper we destroy it before calling
4477         * into the normal path.
4478         */
4479        if (mText != null) {
4480            oldlen = mText.length();
4481            sendBeforeTextChanged(mText, 0, oldlen, len);
4482        } else {
4483            sendBeforeTextChanged("", 0, 0, len);
4484        }
4485
4486        if (mCharWrapper == null) {
4487            mCharWrapper = new CharWrapper(text, start, len);
4488        } else {
4489            mCharWrapper.set(text, start, len);
4490        }
4491
4492        setText(mCharWrapper, mBufferType, false, oldlen);
4493    }
4494
4495    /**
4496     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
4497     * except that the cursor position (if any) is retained in the new text.
4498     *
4499     * @see #setText(CharSequence, android.widget.TextView.BufferType)
4500     */
4501    public final void setTextKeepState(CharSequence text, BufferType type) {
4502        int start = getSelectionStart();
4503        int end = getSelectionEnd();
4504        int len = text.length();
4505
4506        setText(text, type);
4507
4508        if (start >= 0 || end >= 0) {
4509            if (mText instanceof Spannable) {
4510                Selection.setSelection((Spannable) mText,
4511                                       Math.max(0, Math.min(start, len)),
4512                                       Math.max(0, Math.min(end, len)));
4513            }
4514        }
4515    }
4516
4517    @android.view.RemotableViewMethod
4518    public final void setText(@StringRes int resid) {
4519        setText(getContext().getResources().getText(resid));
4520    }
4521
4522    public final void setText(@StringRes int resid, BufferType type) {
4523        setText(getContext().getResources().getText(resid), type);
4524    }
4525
4526    /**
4527     * Sets the text to be displayed when the text of the TextView is empty.
4528     * Null means to use the normal empty text. The hint does not currently
4529     * participate in determining the size of the view.
4530     *
4531     * @attr ref android.R.styleable#TextView_hint
4532     */
4533    @android.view.RemotableViewMethod
4534    public final void setHint(CharSequence hint) {
4535        mHint = TextUtils.stringOrSpannedString(hint);
4536
4537        if (mLayout != null) {
4538            checkForRelayout();
4539        }
4540
4541        if (mText.length() == 0) {
4542            invalidate();
4543        }
4544
4545        // Invalidate display list if hint is currently used
4546        if (mEditor != null && mText.length() == 0 && mHint != null) {
4547            mEditor.invalidateTextDisplayList();
4548        }
4549    }
4550
4551    /**
4552     * Sets the text to be displayed when the text of the TextView is empty,
4553     * from a resource.
4554     *
4555     * @attr ref android.R.styleable#TextView_hint
4556     */
4557    @android.view.RemotableViewMethod
4558    public final void setHint(@StringRes int resid) {
4559        setHint(getContext().getResources().getText(resid));
4560    }
4561
4562    /**
4563     * Returns the hint that is displayed when the text of the TextView
4564     * is empty.
4565     *
4566     * @attr ref android.R.styleable#TextView_hint
4567     */
4568    @ViewDebug.CapturedViewProperty
4569    public CharSequence getHint() {
4570        return mHint;
4571    }
4572
4573    boolean isSingleLine() {
4574        return mSingleLine;
4575    }
4576
4577    private static boolean isMultilineInputType(int type) {
4578        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
4579            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
4580    }
4581
4582    /**
4583     * Removes the suggestion spans.
4584     */
4585    CharSequence removeSuggestionSpans(CharSequence text) {
4586       if (text instanceof Spanned) {
4587           Spannable spannable;
4588           if (text instanceof Spannable) {
4589               spannable = (Spannable) text;
4590           } else {
4591               spannable = new SpannableString(text);
4592               text = spannable;
4593           }
4594
4595           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
4596           for (int i = 0; i < spans.length; i++) {
4597               spannable.removeSpan(spans[i]);
4598           }
4599       }
4600       return text;
4601    }
4602
4603    /**
4604     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
4605     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
4606     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
4607     * then a soft keyboard will not be displayed for this text view.
4608     *
4609     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
4610     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
4611     * type.
4612     *
4613     * @see #getInputType()
4614     * @see #setRawInputType(int)
4615     * @see android.text.InputType
4616     * @attr ref android.R.styleable#TextView_inputType
4617     */
4618    public void setInputType(int type) {
4619        final boolean wasPassword = isPasswordInputType(getInputType());
4620        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
4621        setInputType(type, false);
4622        final boolean isPassword = isPasswordInputType(type);
4623        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
4624        boolean forceUpdate = false;
4625        if (isPassword) {
4626            setTransformationMethod(PasswordTransformationMethod.getInstance());
4627            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4628        } else if (isVisiblePassword) {
4629            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4630                forceUpdate = true;
4631            }
4632            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4633        } else if (wasPassword || wasVisiblePassword) {
4634            // not in password mode, clean up typeface and transformation
4635            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
4636            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4637                forceUpdate = true;
4638            }
4639        }
4640
4641        boolean singleLine = !isMultilineInputType(type);
4642
4643        // We need to update the single line mode if it has changed or we
4644        // were previously in password mode.
4645        if (mSingleLine != singleLine || forceUpdate) {
4646            // Change single line mode, but only change the transformation if
4647            // we are not in password mode.
4648            applySingleLine(singleLine, !isPassword, true);
4649        }
4650
4651        if (!isSuggestionsEnabled()) {
4652            mText = removeSuggestionSpans(mText);
4653        }
4654
4655        InputMethodManager imm = InputMethodManager.peekInstance();
4656        if (imm != null) imm.restartInput(this);
4657    }
4658
4659    /**
4660     * It would be better to rely on the input type for everything. A password inputType should have
4661     * a password transformation. We should hence use isPasswordInputType instead of this method.
4662     *
4663     * We should:
4664     * - Call setInputType in setKeyListener instead of changing the input type directly (which
4665     * would install the correct transformation).
4666     * - Refuse the installation of a non-password transformation in setTransformation if the input
4667     * type is password.
4668     *
4669     * However, this is like this for legacy reasons and we cannot break existing apps. This method
4670     * is useful since it matches what the user can see (obfuscated text or not).
4671     *
4672     * @return true if the current transformation method is of the password type.
4673     */
4674    boolean hasPasswordTransformationMethod() {
4675        return mTransformation instanceof PasswordTransformationMethod;
4676    }
4677
4678    private static boolean isPasswordInputType(int inputType) {
4679        final int variation =
4680                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4681        return variation
4682                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
4683                || variation
4684                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
4685                || variation
4686                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
4687    }
4688
4689    private static boolean isVisiblePasswordInputType(int inputType) {
4690        final int variation =
4691                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4692        return variation
4693                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
4694    }
4695
4696    /**
4697     * Directly change the content type integer of the text view, without
4698     * modifying any other state.
4699     * @see #setInputType(int)
4700     * @see android.text.InputType
4701     * @attr ref android.R.styleable#TextView_inputType
4702     */
4703    public void setRawInputType(int type) {
4704        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
4705        createEditorIfNeeded();
4706        mEditor.mInputType = type;
4707    }
4708
4709    private void setInputType(int type, boolean direct) {
4710        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
4711        KeyListener input;
4712        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
4713            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
4714            TextKeyListener.Capitalize cap;
4715            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
4716                cap = TextKeyListener.Capitalize.CHARACTERS;
4717            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
4718                cap = TextKeyListener.Capitalize.WORDS;
4719            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
4720                cap = TextKeyListener.Capitalize.SENTENCES;
4721            } else {
4722                cap = TextKeyListener.Capitalize.NONE;
4723            }
4724            input = TextKeyListener.getInstance(autotext, cap);
4725        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
4726            input = DigitsKeyListener.getInstance(
4727                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
4728                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
4729        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
4730            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
4731                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
4732                    input = DateKeyListener.getInstance();
4733                    break;
4734                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
4735                    input = TimeKeyListener.getInstance();
4736                    break;
4737                default:
4738                    input = DateTimeKeyListener.getInstance();
4739                    break;
4740            }
4741        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
4742            input = DialerKeyListener.getInstance();
4743        } else {
4744            input = TextKeyListener.getInstance();
4745        }
4746        setRawInputType(type);
4747        if (direct) {
4748            createEditorIfNeeded();
4749            mEditor.mKeyListener = input;
4750        } else {
4751            setKeyListenerOnly(input);
4752        }
4753    }
4754
4755    /**
4756     * Get the type of the editable content.
4757     *
4758     * @see #setInputType(int)
4759     * @see android.text.InputType
4760     */
4761    public int getInputType() {
4762        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
4763    }
4764
4765    /**
4766     * Change the editor type integer associated with the text view, which
4767     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
4768     * has focus.
4769     * @see #getImeOptions
4770     * @see android.view.inputmethod.EditorInfo
4771     * @attr ref android.R.styleable#TextView_imeOptions
4772     */
4773    public void setImeOptions(int imeOptions) {
4774        createEditorIfNeeded();
4775        mEditor.createInputContentTypeIfNeeded();
4776        mEditor.mInputContentType.imeOptions = imeOptions;
4777    }
4778
4779    /**
4780     * Get the type of the IME editor.
4781     *
4782     * @see #setImeOptions(int)
4783     * @see android.view.inputmethod.EditorInfo
4784     */
4785    public int getImeOptions() {
4786        return mEditor != null && mEditor.mInputContentType != null
4787                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
4788    }
4789
4790    /**
4791     * Change the custom IME action associated with the text view, which
4792     * will be reported to an IME with {@link EditorInfo#actionLabel}
4793     * and {@link EditorInfo#actionId} when it has focus.
4794     * @see #getImeActionLabel
4795     * @see #getImeActionId
4796     * @see android.view.inputmethod.EditorInfo
4797     * @attr ref android.R.styleable#TextView_imeActionLabel
4798     * @attr ref android.R.styleable#TextView_imeActionId
4799     */
4800    public void setImeActionLabel(CharSequence label, int actionId) {
4801        createEditorIfNeeded();
4802        mEditor.createInputContentTypeIfNeeded();
4803        mEditor.mInputContentType.imeActionLabel = label;
4804        mEditor.mInputContentType.imeActionId = actionId;
4805    }
4806
4807    /**
4808     * Get the IME action label previous set with {@link #setImeActionLabel}.
4809     *
4810     * @see #setImeActionLabel
4811     * @see android.view.inputmethod.EditorInfo
4812     */
4813    public CharSequence getImeActionLabel() {
4814        return mEditor != null && mEditor.mInputContentType != null
4815                ? mEditor.mInputContentType.imeActionLabel : null;
4816    }
4817
4818    /**
4819     * Get the IME action ID previous set with {@link #setImeActionLabel}.
4820     *
4821     * @see #setImeActionLabel
4822     * @see android.view.inputmethod.EditorInfo
4823     */
4824    public int getImeActionId() {
4825        return mEditor != null && mEditor.mInputContentType != null
4826                ? mEditor.mInputContentType.imeActionId : 0;
4827    }
4828
4829    /**
4830     * Set a special listener to be called when an action is performed
4831     * on the text view.  This will be called when the enter key is pressed,
4832     * or when an action supplied to the IME is selected by the user.  Setting
4833     * this means that the normal hard key event will not insert a newline
4834     * into the text view, even if it is multi-line; holding down the ALT
4835     * modifier will, however, allow the user to insert a newline character.
4836     */
4837    public void setOnEditorActionListener(OnEditorActionListener l) {
4838        createEditorIfNeeded();
4839        mEditor.createInputContentTypeIfNeeded();
4840        mEditor.mInputContentType.onEditorActionListener = l;
4841    }
4842
4843    /**
4844     * Called when an attached input method calls
4845     * {@link InputConnection#performEditorAction(int)
4846     * InputConnection.performEditorAction()}
4847     * for this text view.  The default implementation will call your action
4848     * listener supplied to {@link #setOnEditorActionListener}, or perform
4849     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
4850     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
4851     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
4852     * EditorInfo.IME_ACTION_DONE}.
4853     *
4854     * <p>For backwards compatibility, if no IME options have been set and the
4855     * text view would not normally advance focus on enter, then
4856     * the NEXT and DONE actions received here will be turned into an enter
4857     * key down/up pair to go through the normal key handling.
4858     *
4859     * @param actionCode The code of the action being performed.
4860     *
4861     * @see #setOnEditorActionListener
4862     */
4863    public void onEditorAction(int actionCode) {
4864        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
4865        if (ict != null) {
4866            if (ict.onEditorActionListener != null) {
4867                if (ict.onEditorActionListener.onEditorAction(this,
4868                        actionCode, null)) {
4869                    return;
4870                }
4871            }
4872
4873            // This is the handling for some default action.
4874            // Note that for backwards compatibility we don't do this
4875            // default handling if explicit ime options have not been given,
4876            // instead turning this into the normal enter key codes that an
4877            // app may be expecting.
4878            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
4879                View v = focusSearch(FOCUS_FORWARD);
4880                if (v != null) {
4881                    if (!v.requestFocus(FOCUS_FORWARD)) {
4882                        throw new IllegalStateException("focus search returned a view " +
4883                                "that wasn't able to take focus!");
4884                    }
4885                }
4886                return;
4887
4888            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4889                View v = focusSearch(FOCUS_BACKWARD);
4890                if (v != null) {
4891                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4892                        throw new IllegalStateException("focus search returned a view " +
4893                                "that wasn't able to take focus!");
4894                    }
4895                }
4896                return;
4897
4898            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4899                InputMethodManager imm = InputMethodManager.peekInstance();
4900                if (imm != null && imm.isActive(this)) {
4901                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4902                }
4903                return;
4904            }
4905        }
4906
4907        ViewRootImpl viewRootImpl = getViewRootImpl();
4908        if (viewRootImpl != null) {
4909            long eventTime = SystemClock.uptimeMillis();
4910            viewRootImpl.dispatchKeyFromIme(
4911                    new KeyEvent(eventTime, eventTime,
4912                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4913                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4914                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4915                    | KeyEvent.FLAG_EDITOR_ACTION));
4916            viewRootImpl.dispatchKeyFromIme(
4917                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4918                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4919                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4920                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4921                    | KeyEvent.FLAG_EDITOR_ACTION));
4922        }
4923    }
4924
4925    /**
4926     * Set the private content type of the text, which is the
4927     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4928     * field that will be filled in when creating an input connection.
4929     *
4930     * @see #getPrivateImeOptions()
4931     * @see EditorInfo#privateImeOptions
4932     * @attr ref android.R.styleable#TextView_privateImeOptions
4933     */
4934    public void setPrivateImeOptions(String type) {
4935        createEditorIfNeeded();
4936        mEditor.createInputContentTypeIfNeeded();
4937        mEditor.mInputContentType.privateImeOptions = type;
4938    }
4939
4940    /**
4941     * Get the private type of the content.
4942     *
4943     * @see #setPrivateImeOptions(String)
4944     * @see EditorInfo#privateImeOptions
4945     */
4946    public String getPrivateImeOptions() {
4947        return mEditor != null && mEditor.mInputContentType != null
4948                ? mEditor.mInputContentType.privateImeOptions : null;
4949    }
4950
4951    /**
4952     * Set the extra input data of the text, which is the
4953     * {@link EditorInfo#extras TextBoxAttribute.extras}
4954     * Bundle that will be filled in when creating an input connection.  The
4955     * given integer is the resource ID of an XML resource holding an
4956     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4957     *
4958     * @see #getInputExtras(boolean)
4959     * @see EditorInfo#extras
4960     * @attr ref android.R.styleable#TextView_editorExtras
4961     */
4962    public void setInputExtras(@XmlRes int xmlResId) throws XmlPullParserException, IOException {
4963        createEditorIfNeeded();
4964        XmlResourceParser parser = getResources().getXml(xmlResId);
4965        mEditor.createInputContentTypeIfNeeded();
4966        mEditor.mInputContentType.extras = new Bundle();
4967        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4968    }
4969
4970    /**
4971     * Retrieve the input extras currently associated with the text view, which
4972     * can be viewed as well as modified.
4973     *
4974     * @param create If true, the extras will be created if they don't already
4975     * exist.  Otherwise, null will be returned if none have been created.
4976     * @see #setInputExtras(int)
4977     * @see EditorInfo#extras
4978     * @attr ref android.R.styleable#TextView_editorExtras
4979     */
4980    public Bundle getInputExtras(boolean create) {
4981        if (mEditor == null && !create) return null;
4982        createEditorIfNeeded();
4983        if (mEditor.mInputContentType == null) {
4984            if (!create) return null;
4985            mEditor.createInputContentTypeIfNeeded();
4986        }
4987        if (mEditor.mInputContentType.extras == null) {
4988            if (!create) return null;
4989            mEditor.mInputContentType.extras = new Bundle();
4990        }
4991        return mEditor.mInputContentType.extras;
4992    }
4993
4994    /**
4995     * Returns the error message that was set to be displayed with
4996     * {@link #setError}, or <code>null</code> if no error was set
4997     * or if it the error was cleared by the widget after user input.
4998     */
4999    public CharSequence getError() {
5000        return mEditor == null ? null : mEditor.mError;
5001    }
5002
5003    /**
5004     * Sets the right-hand compound drawable of the TextView to the "error"
5005     * icon and sets an error message that will be displayed in a popup when
5006     * the TextView has focus.  The icon and error message will be reset to
5007     * null when any key events cause changes to the TextView's text.  If the
5008     * <code>error</code> is <code>null</code>, the error message and icon
5009     * will be cleared.
5010     */
5011    @android.view.RemotableViewMethod
5012    public void setError(CharSequence error) {
5013        if (error == null) {
5014            setError(null, null);
5015        } else {
5016            Drawable dr = getContext().getDrawable(
5017                    com.android.internal.R.drawable.indicator_input_error);
5018
5019            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
5020            setError(error, dr);
5021        }
5022    }
5023
5024    /**
5025     * Sets the right-hand compound drawable of the TextView to the specified
5026     * icon and sets an error message that will be displayed in a popup when
5027     * the TextView has focus.  The icon and error message will be reset to
5028     * null when any key events cause changes to the TextView's text.  The
5029     * drawable must already have had {@link Drawable#setBounds} set on it.
5030     * If the <code>error</code> is <code>null</code>, the error message will
5031     * be cleared (and you should provide a <code>null</code> icon as well).
5032     */
5033    public void setError(CharSequence error, Drawable icon) {
5034        createEditorIfNeeded();
5035        mEditor.setError(error, icon);
5036        notifyViewAccessibilityStateChangedIfNeeded(
5037                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
5038    }
5039
5040    @Override
5041    protected boolean setFrame(int l, int t, int r, int b) {
5042        boolean result = super.setFrame(l, t, r, b);
5043
5044        if (mEditor != null) mEditor.setFrame();
5045
5046        restartMarqueeIfNeeded();
5047
5048        return result;
5049    }
5050
5051    private void restartMarqueeIfNeeded() {
5052        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5053            mRestartMarquee = false;
5054            startMarquee();
5055        }
5056    }
5057
5058    /**
5059     * Sets the list of input filters that will be used if the buffer is
5060     * Editable. Has no effect otherwise.
5061     *
5062     * @attr ref android.R.styleable#TextView_maxLength
5063     */
5064    public void setFilters(InputFilter[] filters) {
5065        if (filters == null) {
5066            throw new IllegalArgumentException();
5067        }
5068
5069        mFilters = filters;
5070
5071        if (mText instanceof Editable) {
5072            setFilters((Editable) mText, filters);
5073        }
5074    }
5075
5076    /**
5077     * Sets the list of input filters on the specified Editable,
5078     * and includes mInput in the list if it is an InputFilter.
5079     */
5080    private void setFilters(Editable e, InputFilter[] filters) {
5081        if (mEditor != null) {
5082            final boolean undoFilter = mEditor.mUndoInputFilter != null;
5083            final boolean keyFilter = mEditor.mKeyListener instanceof InputFilter;
5084            int num = 0;
5085            if (undoFilter) num++;
5086            if (keyFilter) num++;
5087            if (num > 0) {
5088                InputFilter[] nf = new InputFilter[filters.length + num];
5089
5090                System.arraycopy(filters, 0, nf, 0, filters.length);
5091                num = 0;
5092                if (undoFilter) {
5093                    nf[filters.length] = mEditor.mUndoInputFilter;
5094                    num++;
5095                }
5096                if (keyFilter) {
5097                    nf[filters.length + num] = (InputFilter) mEditor.mKeyListener;
5098                }
5099
5100                e.setFilters(nf);
5101                return;
5102            }
5103        }
5104        e.setFilters(filters);
5105    }
5106
5107    /**
5108     * Returns the current list of input filters.
5109     *
5110     * @attr ref android.R.styleable#TextView_maxLength
5111     */
5112    public InputFilter[] getFilters() {
5113        return mFilters;
5114    }
5115
5116    /////////////////////////////////////////////////////////////////////////
5117
5118    private int getBoxHeight(Layout l) {
5119        Insets opticalInsets = isLayoutModeOptical(mParent) ? getOpticalInsets() : Insets.NONE;
5120        int padding = (l == mHintLayout) ?
5121                getCompoundPaddingTop() + getCompoundPaddingBottom() :
5122                getExtendedPaddingTop() + getExtendedPaddingBottom();
5123        return getMeasuredHeight() - padding + opticalInsets.top + opticalInsets.bottom;
5124    }
5125
5126    int getVerticalOffset(boolean forceNormal) {
5127        int voffset = 0;
5128        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5129
5130        Layout l = mLayout;
5131        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5132            l = mHintLayout;
5133        }
5134
5135        if (gravity != Gravity.TOP) {
5136            int boxht = getBoxHeight(l);
5137            int textht = l.getHeight();
5138
5139            if (textht < boxht) {
5140                if (gravity == Gravity.BOTTOM)
5141                    voffset = boxht - textht;
5142                else // (gravity == Gravity.CENTER_VERTICAL)
5143                    voffset = (boxht - textht) >> 1;
5144            }
5145        }
5146        return voffset;
5147    }
5148
5149    private int getBottomVerticalOffset(boolean forceNormal) {
5150        int voffset = 0;
5151        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5152
5153        Layout l = mLayout;
5154        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5155            l = mHintLayout;
5156        }
5157
5158        if (gravity != Gravity.BOTTOM) {
5159            int boxht = getBoxHeight(l);
5160            int textht = l.getHeight();
5161
5162            if (textht < boxht) {
5163                if (gravity == Gravity.TOP)
5164                    voffset = boxht - textht;
5165                else // (gravity == Gravity.CENTER_VERTICAL)
5166                    voffset = (boxht - textht) >> 1;
5167            }
5168        }
5169        return voffset;
5170    }
5171
5172    void invalidateCursorPath() {
5173        if (mHighlightPathBogus) {
5174            invalidateCursor();
5175        } else {
5176            final int horizontalPadding = getCompoundPaddingLeft();
5177            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5178
5179            if (mEditor.mCursorCount == 0) {
5180                synchronized (TEMP_RECTF) {
5181                    /*
5182                     * The reason for this concern about the thickness of the
5183                     * cursor and doing the floor/ceil on the coordinates is that
5184                     * some EditTexts (notably textfields in the Browser) have
5185                     * anti-aliased text where not all the characters are
5186                     * necessarily at integer-multiple locations.  This should
5187                     * make sure the entire cursor gets invalidated instead of
5188                     * sometimes missing half a pixel.
5189                     */
5190                    float thick = (float) Math.ceil(mTextPaint.getStrokeWidth());
5191                    if (thick < 1.0f) {
5192                        thick = 1.0f;
5193                    }
5194
5195                    thick /= 2.0f;
5196
5197                    // mHighlightPath is guaranteed to be non null at that point.
5198                    mHighlightPath.computeBounds(TEMP_RECTF, false);
5199
5200                    invalidate((int) Math.floor(horizontalPadding + TEMP_RECTF.left - thick),
5201                            (int) Math.floor(verticalPadding + TEMP_RECTF.top - thick),
5202                            (int) Math.ceil(horizontalPadding + TEMP_RECTF.right + thick),
5203                            (int) Math.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
5204                }
5205            } else {
5206                for (int i = 0; i < mEditor.mCursorCount; i++) {
5207                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5208                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
5209                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
5210                }
5211            }
5212        }
5213    }
5214
5215    void invalidateCursor() {
5216        int where = getSelectionEnd();
5217
5218        invalidateCursor(where, where, where);
5219    }
5220
5221    private void invalidateCursor(int a, int b, int c) {
5222        if (a >= 0 || b >= 0 || c >= 0) {
5223            int start = Math.min(Math.min(a, b), c);
5224            int end = Math.max(Math.max(a, b), c);
5225            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
5226        }
5227    }
5228
5229    /**
5230     * Invalidates the region of text enclosed between the start and end text offsets.
5231     */
5232    void invalidateRegion(int start, int end, boolean invalidateCursor) {
5233        if (mLayout == null) {
5234            invalidate();
5235        } else {
5236                int lineStart = mLayout.getLineForOffset(start);
5237                int top = mLayout.getLineTop(lineStart);
5238
5239                // This is ridiculous, but the descent from the line above
5240                // can hang down into the line we really want to redraw,
5241                // so we have to invalidate part of the line above to make
5242                // sure everything that needs to be redrawn really is.
5243                // (But not the whole line above, because that would cause
5244                // the same problem with the descenders on the line above it!)
5245                if (lineStart > 0) {
5246                    top -= mLayout.getLineDescent(lineStart - 1);
5247                }
5248
5249                int lineEnd;
5250
5251                if (start == end)
5252                    lineEnd = lineStart;
5253                else
5254                    lineEnd = mLayout.getLineForOffset(end);
5255
5256                int bottom = mLayout.getLineBottom(lineEnd);
5257
5258                // mEditor can be null in case selection is set programmatically.
5259                if (invalidateCursor && mEditor != null) {
5260                    for (int i = 0; i < mEditor.mCursorCount; i++) {
5261                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5262                        top = Math.min(top, bounds.top);
5263                        bottom = Math.max(bottom, bounds.bottom);
5264                    }
5265                }
5266
5267                final int compoundPaddingLeft = getCompoundPaddingLeft();
5268                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5269
5270                int left, right;
5271                if (lineStart == lineEnd && !invalidateCursor) {
5272                    left = (int) mLayout.getPrimaryHorizontal(start);
5273                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
5274                    left += compoundPaddingLeft;
5275                    right += compoundPaddingLeft;
5276                } else {
5277                    // Rectangle bounding box when the region spans several lines
5278                    left = compoundPaddingLeft;
5279                    right = getWidth() - getCompoundPaddingRight();
5280                }
5281
5282                invalidate(mScrollX + left, verticalPadding + top,
5283                        mScrollX + right, verticalPadding + bottom);
5284        }
5285    }
5286
5287    private void registerForPreDraw() {
5288        if (!mPreDrawRegistered) {
5289            getViewTreeObserver().addOnPreDrawListener(this);
5290            mPreDrawRegistered = true;
5291        }
5292    }
5293
5294    private void unregisterForPreDraw() {
5295        getViewTreeObserver().removeOnPreDrawListener(this);
5296        mPreDrawRegistered = false;
5297        mPreDrawListenerDetached = false;
5298    }
5299
5300    /**
5301     * {@inheritDoc}
5302     */
5303    public boolean onPreDraw() {
5304        if (mLayout == null) {
5305            assumeLayout();
5306        }
5307
5308        if (mMovement != null) {
5309            /* This code also provides auto-scrolling when a cursor is moved using a
5310             * CursorController (insertion point or selection limits).
5311             * For selection, ensure start or end is visible depending on controller's state.
5312             */
5313            int curs = getSelectionEnd();
5314            // Do not create the controller if it is not already created.
5315            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
5316                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
5317                curs = getSelectionStart();
5318            }
5319
5320            /*
5321             * TODO: This should really only keep the end in view if
5322             * it already was before the text changed.  I'm not sure
5323             * of a good way to tell from here if it was.
5324             */
5325            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5326                curs = mText.length();
5327            }
5328
5329            if (curs >= 0) {
5330                bringPointIntoView(curs);
5331            }
5332        } else {
5333            bringTextIntoView();
5334        }
5335
5336        // This has to be checked here since:
5337        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
5338        //   a screen rotation) since layout is not yet initialized at that point.
5339        if (mEditor != null && mEditor.mCreatedWithASelection) {
5340            if (mEditor.extractedTextModeWillBeStarted()) {
5341                mEditor.checkFieldAndSelectCurrentWord();
5342            } else {
5343                mEditor.startSelectionActionMode();
5344            }
5345            mEditor.mCreatedWithASelection = false;
5346        }
5347
5348        unregisterForPreDraw();
5349
5350        return true;
5351    }
5352
5353    @Override
5354    protected void onAttachedToWindow() {
5355        super.onAttachedToWindow();
5356
5357        mTemporaryDetach = false;
5358
5359        if (mEditor != null) mEditor.onAttachedToWindow();
5360
5361        if (mPreDrawListenerDetached) {
5362            getViewTreeObserver().addOnPreDrawListener(this);
5363            mPreDrawListenerDetached = false;
5364        }
5365    }
5366
5367    /** @hide */
5368    @Override
5369    protected void onDetachedFromWindowInternal() {
5370        if (mPreDrawRegistered) {
5371            getViewTreeObserver().removeOnPreDrawListener(this);
5372            mPreDrawListenerDetached = true;
5373        }
5374
5375        resetResolvedDrawables();
5376
5377        if (mEditor != null) mEditor.onDetachedFromWindow();
5378
5379        super.onDetachedFromWindowInternal();
5380    }
5381
5382    @Override
5383    public void onScreenStateChanged(int screenState) {
5384        super.onScreenStateChanged(screenState);
5385        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
5386    }
5387
5388    @Override
5389    protected boolean isPaddingOffsetRequired() {
5390        return mShadowRadius != 0 || mDrawables != null;
5391    }
5392
5393    @Override
5394    protected int getLeftPaddingOffset() {
5395        return getCompoundPaddingLeft() - mPaddingLeft +
5396                (int) Math.min(0, mShadowDx - mShadowRadius);
5397    }
5398
5399    @Override
5400    protected int getTopPaddingOffset() {
5401        return (int) Math.min(0, mShadowDy - mShadowRadius);
5402    }
5403
5404    @Override
5405    protected int getBottomPaddingOffset() {
5406        return (int) Math.max(0, mShadowDy + mShadowRadius);
5407    }
5408
5409    private int getFudgedPaddingRight() {
5410        // Add sufficient space for cursor and tone marks
5411        int cursorWidth = 2 + (int)mTextPaint.density; // adequate for Material cursors
5412        return Math.max(0, getCompoundPaddingRight() - (cursorWidth - 1));
5413    }
5414
5415    @Override
5416    protected int getRightPaddingOffset() {
5417        return -(getFudgedPaddingRight() - mPaddingRight) +
5418                (int) Math.max(0, mShadowDx + mShadowRadius);
5419    }
5420
5421    @Override
5422    protected boolean verifyDrawable(Drawable who) {
5423        final boolean verified = super.verifyDrawable(who);
5424        if (!verified && mDrawables != null) {
5425            for (Drawable dr : mDrawables.mShowing) {
5426                if (who == dr) {
5427                    return true;
5428                }
5429            }
5430        }
5431        return verified;
5432    }
5433
5434    @Override
5435    public void jumpDrawablesToCurrentState() {
5436        super.jumpDrawablesToCurrentState();
5437        if (mDrawables != null) {
5438            for (Drawable dr : mDrawables.mShowing) {
5439                if (dr != null) {
5440                    dr.jumpToCurrentState();
5441                }
5442            }
5443        }
5444    }
5445
5446    @Override
5447    public void invalidateDrawable(Drawable drawable) {
5448        boolean handled = false;
5449
5450        if (verifyDrawable(drawable)) {
5451            final Rect dirty = drawable.getBounds();
5452            int scrollX = mScrollX;
5453            int scrollY = mScrollY;
5454
5455            // IMPORTANT: The coordinates below are based on the coordinates computed
5456            // for each compound drawable in onDraw(). Make sure to update each section
5457            // accordingly.
5458            final TextView.Drawables drawables = mDrawables;
5459            if (drawables != null) {
5460                if (drawable == drawables.mShowing[Drawables.LEFT]) {
5461                    final int compoundPaddingTop = getCompoundPaddingTop();
5462                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5463                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5464
5465                    scrollX += mPaddingLeft;
5466                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
5467                    handled = true;
5468                } else if (drawable == drawables.mShowing[Drawables.RIGHT]) {
5469                    final int compoundPaddingTop = getCompoundPaddingTop();
5470                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5471                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5472
5473                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
5474                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
5475                    handled = true;
5476                } else if (drawable == drawables.mShowing[Drawables.TOP]) {
5477                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5478                    final int compoundPaddingRight = getCompoundPaddingRight();
5479                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5480
5481                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
5482                    scrollY += mPaddingTop;
5483                    handled = true;
5484                } else if (drawable == drawables.mShowing[Drawables.BOTTOM]) {
5485                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5486                    final int compoundPaddingRight = getCompoundPaddingRight();
5487                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5488
5489                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
5490                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
5491                    handled = true;
5492                }
5493            }
5494
5495            if (handled) {
5496                invalidate(dirty.left + scrollX, dirty.top + scrollY,
5497                        dirty.right + scrollX, dirty.bottom + scrollY);
5498            }
5499        }
5500
5501        if (!handled) {
5502            super.invalidateDrawable(drawable);
5503        }
5504    }
5505
5506    @Override
5507    public boolean hasOverlappingRendering() {
5508        // horizontal fading edge causes SaveLayerAlpha, which doesn't support alpha modulation
5509        return ((getBackground() != null && getBackground().getCurrent() != null)
5510                || mText instanceof Spannable || hasSelection()
5511                || isHorizontalFadingEdgeEnabled());
5512    }
5513
5514    /**
5515     *
5516     * Returns the state of the {@code textIsSelectable} flag (See
5517     * {@link #setTextIsSelectable setTextIsSelectable()}). Although you have to set this flag
5518     * to allow users to select and copy text in a non-editable TextView, the content of an
5519     * {@link EditText} can always be selected, independently of the value of this flag.
5520     * <p>
5521     *
5522     * @return True if the text displayed in this TextView can be selected by the user.
5523     *
5524     * @attr ref android.R.styleable#TextView_textIsSelectable
5525     */
5526    public boolean isTextSelectable() {
5527        return mEditor == null ? false : mEditor.mTextIsSelectable;
5528    }
5529
5530    /**
5531     * Sets whether the content of this view is selectable by the user. The default is
5532     * {@code false}, meaning that the content is not selectable.
5533     * <p>
5534     * When you use a TextView to display a useful piece of information to the user (such as a
5535     * contact's address), make it selectable, so that the user can select and copy its
5536     * content. You can also use set the XML attribute
5537     * {@link android.R.styleable#TextView_textIsSelectable} to "true".
5538     * <p>
5539     * When you call this method to set the value of {@code textIsSelectable}, it sets
5540     * the flags {@code focusable}, {@code focusableInTouchMode}, {@code clickable},
5541     * and {@code longClickable} to the same value. These flags correspond to the attributes
5542     * {@link android.R.styleable#View_focusable android:focusable},
5543     * {@link android.R.styleable#View_focusableInTouchMode android:focusableInTouchMode},
5544     * {@link android.R.styleable#View_clickable android:clickable}, and
5545     * {@link android.R.styleable#View_longClickable android:longClickable}. To restore any of these
5546     * flags to a state you had set previously, call one or more of the following methods:
5547     * {@link #setFocusable(boolean) setFocusable()},
5548     * {@link #setFocusableInTouchMode(boolean) setFocusableInTouchMode()},
5549     * {@link #setClickable(boolean) setClickable()} or
5550     * {@link #setLongClickable(boolean) setLongClickable()}.
5551     *
5552     * @param selectable Whether the content of this TextView should be selectable.
5553     */
5554    public void setTextIsSelectable(boolean selectable) {
5555        if (!selectable && mEditor == null) return; // false is default value with no edit data
5556
5557        createEditorIfNeeded();
5558        if (mEditor.mTextIsSelectable == selectable) return;
5559
5560        mEditor.mTextIsSelectable = selectable;
5561        setFocusableInTouchMode(selectable);
5562        setFocusable(selectable);
5563        setClickable(selectable);
5564        setLongClickable(selectable);
5565
5566        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
5567
5568        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
5569        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
5570
5571        // Called by setText above, but safer in case of future code changes
5572        mEditor.prepareCursorControllers();
5573    }
5574
5575    @Override
5576    protected int[] onCreateDrawableState(int extraSpace) {
5577        final int[] drawableState;
5578
5579        if (mSingleLine) {
5580            drawableState = super.onCreateDrawableState(extraSpace);
5581        } else {
5582            drawableState = super.onCreateDrawableState(extraSpace + 1);
5583            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
5584        }
5585
5586        if (isTextSelectable()) {
5587            // Disable pressed state, which was introduced when TextView was made clickable.
5588            // Prevents text color change.
5589            // setClickable(false) would have a similar effect, but it also disables focus changes
5590            // and long press actions, which are both needed by text selection.
5591            final int length = drawableState.length;
5592            for (int i = 0; i < length; i++) {
5593                if (drawableState[i] == R.attr.state_pressed) {
5594                    final int[] nonPressedState = new int[length - 1];
5595                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
5596                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
5597                    return nonPressedState;
5598                }
5599            }
5600        }
5601
5602        return drawableState;
5603    }
5604
5605    private Path getUpdatedHighlightPath() {
5606        Path highlight = null;
5607        Paint highlightPaint = mHighlightPaint;
5608
5609        final int selStart = getSelectionStart();
5610        final int selEnd = getSelectionEnd();
5611        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
5612            if (selStart == selEnd) {
5613                if (mEditor != null && mEditor.isCursorVisible() &&
5614                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
5615                        (2 * Editor.BLINK) < Editor.BLINK) {
5616                    if (mHighlightPathBogus) {
5617                        if (mHighlightPath == null) mHighlightPath = new Path();
5618                        mHighlightPath.reset();
5619                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
5620                        mEditor.updateCursorsPositions();
5621                        mHighlightPathBogus = false;
5622                    }
5623
5624                    // XXX should pass to skin instead of drawing directly
5625                    highlightPaint.setColor(mCurTextColor);
5626                    highlightPaint.setStyle(Paint.Style.STROKE);
5627                    highlight = mHighlightPath;
5628                }
5629            } else {
5630                if (mHighlightPathBogus) {
5631                    if (mHighlightPath == null) mHighlightPath = new Path();
5632                    mHighlightPath.reset();
5633                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5634                    mHighlightPathBogus = false;
5635                }
5636
5637                // XXX should pass to skin instead of drawing directly
5638                highlightPaint.setColor(mHighlightColor);
5639                highlightPaint.setStyle(Paint.Style.FILL);
5640
5641                highlight = mHighlightPath;
5642            }
5643        }
5644        return highlight;
5645    }
5646
5647    /**
5648     * @hide
5649     */
5650    public int getHorizontalOffsetForDrawables() {
5651        return 0;
5652    }
5653
5654    @Override
5655    protected void onDraw(Canvas canvas) {
5656        restartMarqueeIfNeeded();
5657
5658        // Draw the background for this view
5659        super.onDraw(canvas);
5660
5661        final int compoundPaddingLeft = getCompoundPaddingLeft();
5662        final int compoundPaddingTop = getCompoundPaddingTop();
5663        final int compoundPaddingRight = getCompoundPaddingRight();
5664        final int compoundPaddingBottom = getCompoundPaddingBottom();
5665        final int scrollX = mScrollX;
5666        final int scrollY = mScrollY;
5667        final int right = mRight;
5668        final int left = mLeft;
5669        final int bottom = mBottom;
5670        final int top = mTop;
5671        final boolean isLayoutRtl = isLayoutRtl();
5672        final int offset = getHorizontalOffsetForDrawables();
5673        final int leftOffset = isLayoutRtl ? 0 : offset;
5674        final int rightOffset = isLayoutRtl ? offset : 0 ;
5675
5676        final Drawables dr = mDrawables;
5677        if (dr != null) {
5678            /*
5679             * Compound, not extended, because the icon is not clipped
5680             * if the text height is smaller.
5681             */
5682
5683            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
5684            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
5685
5686            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5687            // Make sure to update invalidateDrawable() when changing this code.
5688            if (dr.mShowing[Drawables.LEFT] != null) {
5689                canvas.save();
5690                canvas.translate(scrollX + mPaddingLeft + leftOffset,
5691                                 scrollY + compoundPaddingTop +
5692                                 (vspace - dr.mDrawableHeightLeft) / 2);
5693                dr.mShowing[Drawables.LEFT].draw(canvas);
5694                canvas.restore();
5695            }
5696
5697            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5698            // Make sure to update invalidateDrawable() when changing this code.
5699            if (dr.mShowing[Drawables.RIGHT] != null) {
5700                canvas.save();
5701                canvas.translate(scrollX + right - left - mPaddingRight
5702                        - dr.mDrawableSizeRight - rightOffset,
5703                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
5704                dr.mShowing[Drawables.RIGHT].draw(canvas);
5705                canvas.restore();
5706            }
5707
5708            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5709            // Make sure to update invalidateDrawable() when changing this code.
5710            if (dr.mShowing[Drawables.TOP] != null) {
5711                canvas.save();
5712                canvas.translate(scrollX + compoundPaddingLeft +
5713                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
5714                dr.mShowing[Drawables.TOP].draw(canvas);
5715                canvas.restore();
5716            }
5717
5718            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5719            // Make sure to update invalidateDrawable() when changing this code.
5720            if (dr.mShowing[Drawables.BOTTOM] != null) {
5721                canvas.save();
5722                canvas.translate(scrollX + compoundPaddingLeft +
5723                        (hspace - dr.mDrawableWidthBottom) / 2,
5724                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
5725                dr.mShowing[Drawables.BOTTOM].draw(canvas);
5726                canvas.restore();
5727            }
5728        }
5729
5730        int color = mCurTextColor;
5731
5732        if (mLayout == null) {
5733            assumeLayout();
5734        }
5735
5736        Layout layout = mLayout;
5737
5738        if (mHint != null && mText.length() == 0) {
5739            if (mHintTextColor != null) {
5740                color = mCurHintTextColor;
5741            }
5742
5743            layout = mHintLayout;
5744        }
5745
5746        mTextPaint.setColor(color);
5747        mTextPaint.drawableState = getDrawableState();
5748
5749        canvas.save();
5750        /*  Would be faster if we didn't have to do this. Can we chop the
5751            (displayable) text so that we don't need to do this ever?
5752        */
5753
5754        int extendedPaddingTop = getExtendedPaddingTop();
5755        int extendedPaddingBottom = getExtendedPaddingBottom();
5756
5757        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5758        final int maxScrollY = mLayout.getHeight() - vspace;
5759
5760        float clipLeft = compoundPaddingLeft + scrollX;
5761        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
5762        float clipRight = right - left - getFudgedPaddingRight() + scrollX;
5763        float clipBottom = bottom - top + scrollY -
5764                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
5765
5766        if (mShadowRadius != 0) {
5767            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
5768            clipRight += Math.max(0, mShadowDx + mShadowRadius);
5769
5770            clipTop += Math.min(0, mShadowDy - mShadowRadius);
5771            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
5772        }
5773
5774        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
5775
5776        int voffsetText = 0;
5777        int voffsetCursor = 0;
5778
5779        // translate in by our padding
5780        /* shortcircuit calling getVerticaOffset() */
5781        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5782            voffsetText = getVerticalOffset(false);
5783            voffsetCursor = getVerticalOffset(true);
5784        }
5785        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
5786
5787        final int layoutDirection = getLayoutDirection();
5788        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
5789        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
5790                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5791            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
5792                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
5793                final int width = mRight - mLeft;
5794                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
5795                final float dx = mLayout.getLineRight(0) - (width - padding);
5796                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5797            }
5798
5799            if (mMarquee != null && mMarquee.isRunning()) {
5800                final float dx = -mMarquee.getScroll();
5801                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5802            }
5803        }
5804
5805        final int cursorOffsetVertical = voffsetCursor - voffsetText;
5806
5807        Path highlight = getUpdatedHighlightPath();
5808        if (mEditor != null) {
5809            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
5810        } else {
5811            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5812        }
5813
5814        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
5815            final float dx = mMarquee.getGhostOffset();
5816            canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5817            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5818        }
5819
5820        canvas.restore();
5821    }
5822
5823    @Override
5824    public void getFocusedRect(Rect r) {
5825        if (mLayout == null) {
5826            super.getFocusedRect(r);
5827            return;
5828        }
5829
5830        int selEnd = getSelectionEnd();
5831        if (selEnd < 0) {
5832            super.getFocusedRect(r);
5833            return;
5834        }
5835
5836        int selStart = getSelectionStart();
5837        if (selStart < 0 || selStart >= selEnd) {
5838            int line = mLayout.getLineForOffset(selEnd);
5839            r.top = mLayout.getLineTop(line);
5840            r.bottom = mLayout.getLineBottom(line);
5841            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
5842            r.right = r.left + 4;
5843        } else {
5844            int lineStart = mLayout.getLineForOffset(selStart);
5845            int lineEnd = mLayout.getLineForOffset(selEnd);
5846            r.top = mLayout.getLineTop(lineStart);
5847            r.bottom = mLayout.getLineBottom(lineEnd);
5848            if (lineStart == lineEnd) {
5849                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
5850                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
5851            } else {
5852                // Selection extends across multiple lines -- make the focused
5853                // rect cover the entire width.
5854                if (mHighlightPathBogus) {
5855                    if (mHighlightPath == null) mHighlightPath = new Path();
5856                    mHighlightPath.reset();
5857                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5858                    mHighlightPathBogus = false;
5859                }
5860                synchronized (TEMP_RECTF) {
5861                    mHighlightPath.computeBounds(TEMP_RECTF, true);
5862                    r.left = (int)TEMP_RECTF.left-1;
5863                    r.right = (int)TEMP_RECTF.right+1;
5864                }
5865            }
5866        }
5867
5868        // Adjust for padding and gravity.
5869        int paddingLeft = getCompoundPaddingLeft();
5870        int paddingTop = getExtendedPaddingTop();
5871        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5872            paddingTop += getVerticalOffset(false);
5873        }
5874        r.offset(paddingLeft, paddingTop);
5875        int paddingBottom = getExtendedPaddingBottom();
5876        r.bottom += paddingBottom;
5877    }
5878
5879    /**
5880     * Return the number of lines of text, or 0 if the internal Layout has not
5881     * been built.
5882     */
5883    public int getLineCount() {
5884        return mLayout != null ? mLayout.getLineCount() : 0;
5885    }
5886
5887    /**
5888     * Return the baseline for the specified line (0...getLineCount() - 1)
5889     * If bounds is not null, return the top, left, right, bottom extents
5890     * of the specified line in it. If the internal Layout has not been built,
5891     * return 0 and set bounds to (0, 0, 0, 0)
5892     * @param line which line to examine (0..getLineCount() - 1)
5893     * @param bounds Optional. If not null, it returns the extent of the line
5894     * @return the Y-coordinate of the baseline
5895     */
5896    public int getLineBounds(int line, Rect bounds) {
5897        if (mLayout == null) {
5898            if (bounds != null) {
5899                bounds.set(0, 0, 0, 0);
5900            }
5901            return 0;
5902        }
5903        else {
5904            int baseline = mLayout.getLineBounds(line, bounds);
5905
5906            int voffset = getExtendedPaddingTop();
5907            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5908                voffset += getVerticalOffset(true);
5909            }
5910            if (bounds != null) {
5911                bounds.offset(getCompoundPaddingLeft(), voffset);
5912            }
5913            return baseline + voffset;
5914        }
5915    }
5916
5917    @Override
5918    public int getBaseline() {
5919        if (mLayout == null) {
5920            return super.getBaseline();
5921        }
5922
5923        return getBaselineOffset() + mLayout.getLineBaseline(0);
5924    }
5925
5926    int getBaselineOffset() {
5927        int voffset = 0;
5928        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5929            voffset = getVerticalOffset(true);
5930        }
5931
5932        if (isLayoutModeOptical(mParent)) {
5933            voffset -= getOpticalInsets().top;
5934        }
5935
5936        return getExtendedPaddingTop() + voffset;
5937    }
5938
5939    /**
5940     * @hide
5941     */
5942    @Override
5943    protected int getFadeTop(boolean offsetRequired) {
5944        if (mLayout == null) return 0;
5945
5946        int voffset = 0;
5947        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5948            voffset = getVerticalOffset(true);
5949        }
5950
5951        if (offsetRequired) voffset += getTopPaddingOffset();
5952
5953        return getExtendedPaddingTop() + voffset;
5954    }
5955
5956    /**
5957     * @hide
5958     */
5959    @Override
5960    protected int getFadeHeight(boolean offsetRequired) {
5961        return mLayout != null ? mLayout.getHeight() : 0;
5962    }
5963
5964    @Override
5965    public PointerIcon getPointerIcon(MotionEvent event, float x, float y) {
5966        if (mText instanceof Spannable && mLinksClickable) {
5967            final int offset = getOffsetForPosition(x, y);
5968            final ClickableSpan[] clickables = ((Spannable) mText).getSpans(offset, offset,
5969                    ClickableSpan.class);
5970            if (clickables.length > 0) {
5971                return PointerIcon.getSystemIcon(mContext, PointerIcon.STYLE_HAND);
5972            }
5973        }
5974        if (isTextSelectable() || isTextEditable()) {
5975            return PointerIcon.getSystemIcon(mContext, PointerIcon.STYLE_TEXT);
5976        }
5977        return super.getPointerIcon(event, x, y);
5978    }
5979
5980    @Override
5981    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
5982        // Note: If the IME is in fullscreen mode and IMS#mExtractEditText is in text action mode,
5983        // InputMethodService#onKeyDown and InputMethodService#onKeyUp are responsible to call
5984        // InputMethodService#mExtractEditText.maybeHandleBackInTextActionMode(event).
5985        if (keyCode == KeyEvent.KEYCODE_BACK && handleBackInTextActionModeIfNeeded(event)) {
5986            return true;
5987        }
5988        return super.onKeyPreIme(keyCode, event);
5989    }
5990
5991    /**
5992     * @hide
5993     */
5994    public boolean handleBackInTextActionModeIfNeeded(KeyEvent event) {
5995        // Do nothing unless mEditor is in text action mode.
5996        if (mEditor == null || mEditor.mTextActionMode == null) {
5997            return false;
5998        }
5999
6000        if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
6001            KeyEvent.DispatcherState state = getKeyDispatcherState();
6002            if (state != null) {
6003                state.startTracking(event, this);
6004            }
6005            return true;
6006        } else if (event.getAction() == KeyEvent.ACTION_UP) {
6007            KeyEvent.DispatcherState state = getKeyDispatcherState();
6008            if (state != null) {
6009                state.handleUpEvent(event);
6010            }
6011            if (event.isTracking() && !event.isCanceled()) {
6012                stopTextActionMode();
6013                return true;
6014            }
6015        }
6016        return false;
6017    }
6018
6019    @Override
6020    public boolean onKeyDown(int keyCode, KeyEvent event) {
6021        final int which = doKeyDown(keyCode, event, null);
6022        if (which == KEY_EVENT_NOT_HANDLED) {
6023            return super.onKeyDown(keyCode, event);
6024        }
6025
6026        return true;
6027    }
6028
6029    @Override
6030    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
6031        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
6032        final int which = doKeyDown(keyCode, down, event);
6033        if (which == KEY_EVENT_NOT_HANDLED) {
6034            // Go through default dispatching.
6035            return super.onKeyMultiple(keyCode, repeatCount, event);
6036        }
6037        if (which == KEY_EVENT_HANDLED) {
6038            // Consumed the whole thing.
6039            return true;
6040        }
6041
6042        repeatCount--;
6043
6044        // We are going to dispatch the remaining events to either the input
6045        // or movement method.  To do this, we will just send a repeated stream
6046        // of down and up events until we have done the complete repeatCount.
6047        // It would be nice if those interfaces had an onKeyMultiple() method,
6048        // but adding that is a more complicated change.
6049        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
6050        if (which == KEY_DOWN_HANDLED_BY_KEY_LISTENER) {
6051            // mEditor and mEditor.mInput are not null from doKeyDown
6052            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
6053            while (--repeatCount > 0) {
6054                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
6055                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
6056            }
6057            hideErrorIfUnchanged();
6058
6059        } else if (which == KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD) {
6060            // mMovement is not null from doKeyDown
6061            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6062            while (--repeatCount > 0) {
6063                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
6064                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6065            }
6066        }
6067
6068        return true;
6069    }
6070
6071    /**
6072     * Returns true if pressing ENTER in this field advances focus instead
6073     * of inserting the character.  This is true mostly in single-line fields,
6074     * but also in mail addresses and subjects which will display on multiple
6075     * lines but where it doesn't make sense to insert newlines.
6076     */
6077    private boolean shouldAdvanceFocusOnEnter() {
6078        if (getKeyListener() == null) {
6079            return false;
6080        }
6081
6082        if (mSingleLine) {
6083            return true;
6084        }
6085
6086        if (mEditor != null &&
6087                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6088            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6089            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
6090                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
6091                return true;
6092            }
6093        }
6094
6095        return false;
6096    }
6097
6098    /**
6099     * Returns true if pressing TAB in this field advances focus instead
6100     * of inserting the character.  Insert tabs only in multi-line editors.
6101     */
6102    private boolean shouldAdvanceFocusOnTab() {
6103        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
6104                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6105            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6106            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
6107                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
6108                return false;
6109            }
6110        }
6111        return true;
6112    }
6113
6114    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
6115        if (!isEnabled()) {
6116            return KEY_EVENT_NOT_HANDLED;
6117        }
6118
6119        // If this is the initial keydown, we don't want to prevent a movement away from this view.
6120        // While this shouldn't be necessary because any time we're preventing default movement we
6121        // should be restricting the focus to remain within this view, thus we'll also receive
6122        // the key up event, occasionally key up events will get dropped and we don't want to
6123        // prevent the user from traversing out of this on the next key down.
6124        if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6125            mPreventDefaultMovement = false;
6126        }
6127
6128        switch (keyCode) {
6129            case KeyEvent.KEYCODE_ENTER:
6130                if (event.hasNoModifiers()) {
6131                    // When mInputContentType is set, we know that we are
6132                    // running in a "modern" cupcake environment, so don't need
6133                    // to worry about the application trying to capture
6134                    // enter key events.
6135                    if (mEditor != null && mEditor.mInputContentType != null) {
6136                        // If there is an action listener, given them a
6137                        // chance to consume the event.
6138                        if (mEditor.mInputContentType.onEditorActionListener != null &&
6139                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6140                                this, EditorInfo.IME_NULL, event)) {
6141                            mEditor.mInputContentType.enterDown = true;
6142                            // We are consuming the enter key for them.
6143                            return KEY_EVENT_HANDLED;
6144                        }
6145                    }
6146
6147                    // If our editor should move focus when enter is pressed, or
6148                    // this is a generated event from an IME action button, then
6149                    // don't let it be inserted into the text.
6150                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6151                            || shouldAdvanceFocusOnEnter()) {
6152                        if (hasOnClickListeners()) {
6153                            return KEY_EVENT_NOT_HANDLED;
6154                        }
6155                        return KEY_EVENT_HANDLED;
6156                    }
6157                }
6158                break;
6159
6160            case KeyEvent.KEYCODE_DPAD_CENTER:
6161                if (event.hasNoModifiers()) {
6162                    if (shouldAdvanceFocusOnEnter()) {
6163                        return KEY_EVENT_NOT_HANDLED;
6164                    }
6165                }
6166                break;
6167
6168            case KeyEvent.KEYCODE_TAB:
6169                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
6170                    if (shouldAdvanceFocusOnTab()) {
6171                        return KEY_EVENT_NOT_HANDLED;
6172                    }
6173                }
6174                break;
6175
6176                // Has to be done on key down (and not on key up) to correctly be intercepted.
6177            case KeyEvent.KEYCODE_BACK:
6178                if (mEditor != null && mEditor.mTextActionMode != null) {
6179                    stopTextActionMode();
6180                    return KEY_EVENT_HANDLED;
6181                }
6182                break;
6183
6184            case KeyEvent.KEYCODE_CUT:
6185                if (event.hasNoModifiers() && canCut()) {
6186                    if (onTextContextMenuItem(ID_CUT)) {
6187                        return KEY_EVENT_HANDLED;
6188                    }
6189                }
6190                break;
6191
6192            case KeyEvent.KEYCODE_COPY:
6193                if (event.hasNoModifiers() && canCopy()) {
6194                    if (onTextContextMenuItem(ID_COPY)) {
6195                        return KEY_EVENT_HANDLED;
6196                    }
6197                }
6198                break;
6199
6200            case KeyEvent.KEYCODE_PASTE:
6201                if (event.hasNoModifiers() && canPaste()) {
6202                    if (onTextContextMenuItem(ID_PASTE)) {
6203                        return KEY_EVENT_HANDLED;
6204                    }
6205                }
6206                break;
6207        }
6208
6209        if (mEditor != null && mEditor.mKeyListener != null) {
6210            boolean doDown = true;
6211            if (otherEvent != null) {
6212                try {
6213                    beginBatchEdit();
6214                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
6215                            otherEvent);
6216                    hideErrorIfUnchanged();
6217                    doDown = false;
6218                    if (handled) {
6219                        return KEY_EVENT_HANDLED;
6220                    }
6221                } catch (AbstractMethodError e) {
6222                    // onKeyOther was added after 1.0, so if it isn't
6223                    // implemented we need to try to dispatch as a regular down.
6224                } finally {
6225                    endBatchEdit();
6226                }
6227            }
6228
6229            if (doDown) {
6230                beginBatchEdit();
6231                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
6232                        keyCode, event);
6233                endBatchEdit();
6234                hideErrorIfUnchanged();
6235                if (handled) return KEY_DOWN_HANDLED_BY_KEY_LISTENER;
6236            }
6237        }
6238
6239        // bug 650865: sometimes we get a key event before a layout.
6240        // don't try to move around if we don't know the layout.
6241
6242        if (mMovement != null && mLayout != null) {
6243            boolean doDown = true;
6244            if (otherEvent != null) {
6245                try {
6246                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
6247                            otherEvent);
6248                    doDown = false;
6249                    if (handled) {
6250                        return KEY_EVENT_HANDLED;
6251                    }
6252                } catch (AbstractMethodError e) {
6253                    // onKeyOther was added after 1.0, so if it isn't
6254                    // implemented we need to try to dispatch as a regular down.
6255                }
6256            }
6257            if (doDown) {
6258                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event)) {
6259                    if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6260                        mPreventDefaultMovement = true;
6261                    }
6262                    return KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD;
6263                }
6264            }
6265        }
6266
6267        return mPreventDefaultMovement && !KeyEvent.isModifierKey(keyCode) ?
6268                KEY_EVENT_HANDLED : KEY_EVENT_NOT_HANDLED;
6269    }
6270
6271    /**
6272     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
6273     * can be recorded.
6274     * @hide
6275     */
6276    public void resetErrorChangedFlag() {
6277        /*
6278         * Keep track of what the error was before doing the input
6279         * so that if an input filter changed the error, we leave
6280         * that error showing.  Otherwise, we take down whatever
6281         * error was showing when the user types something.
6282         */
6283        if (mEditor != null) mEditor.mErrorWasChanged = false;
6284    }
6285
6286    /**
6287     * @hide
6288     */
6289    public void hideErrorIfUnchanged() {
6290        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
6291            setError(null, null);
6292        }
6293    }
6294
6295    @Override
6296    public boolean onKeyUp(int keyCode, KeyEvent event) {
6297        if (!isEnabled()) {
6298            return super.onKeyUp(keyCode, event);
6299        }
6300
6301        if (!KeyEvent.isModifierKey(keyCode)) {
6302            mPreventDefaultMovement = false;
6303        }
6304
6305        switch (keyCode) {
6306            case KeyEvent.KEYCODE_DPAD_CENTER:
6307                if (event.hasNoModifiers()) {
6308                    /*
6309                     * If there is a click listener, just call through to
6310                     * super, which will invoke it.
6311                     *
6312                     * If there isn't a click listener, try to show the soft
6313                     * input method.  (It will also
6314                     * call performClick(), but that won't do anything in
6315                     * this case.)
6316                     */
6317                    if (!hasOnClickListeners()) {
6318                        if (mMovement != null && mText instanceof Editable
6319                                && mLayout != null && onCheckIsTextEditor()) {
6320                            InputMethodManager imm = InputMethodManager.peekInstance();
6321                            viewClicked(imm);
6322                            if (imm != null && getShowSoftInputOnFocus()) {
6323                                imm.showSoftInput(this, 0);
6324                            }
6325                        }
6326                    }
6327                }
6328                return super.onKeyUp(keyCode, event);
6329
6330            case KeyEvent.KEYCODE_ENTER:
6331                if (event.hasNoModifiers()) {
6332                    if (mEditor != null && mEditor.mInputContentType != null
6333                            && mEditor.mInputContentType.onEditorActionListener != null
6334                            && mEditor.mInputContentType.enterDown) {
6335                        mEditor.mInputContentType.enterDown = false;
6336                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6337                                this, EditorInfo.IME_NULL, event)) {
6338                            return true;
6339                        }
6340                    }
6341
6342                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6343                            || shouldAdvanceFocusOnEnter()) {
6344                        /*
6345                         * If there is a click listener, just call through to
6346                         * super, which will invoke it.
6347                         *
6348                         * If there isn't a click listener, try to advance focus,
6349                         * but still call through to super, which will reset the
6350                         * pressed state and longpress state.  (It will also
6351                         * call performClick(), but that won't do anything in
6352                         * this case.)
6353                         */
6354                        if (!hasOnClickListeners()) {
6355                            View v = focusSearch(FOCUS_DOWN);
6356
6357                            if (v != null) {
6358                                if (!v.requestFocus(FOCUS_DOWN)) {
6359                                    throw new IllegalStateException(
6360                                            "focus search returned a view " +
6361                                            "that wasn't able to take focus!");
6362                                }
6363
6364                                /*
6365                                 * Return true because we handled the key; super
6366                                 * will return false because there was no click
6367                                 * listener.
6368                                 */
6369                                super.onKeyUp(keyCode, event);
6370                                return true;
6371                            } else if ((event.getFlags()
6372                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
6373                                // No target for next focus, but make sure the IME
6374                                // if this came from it.
6375                                InputMethodManager imm = InputMethodManager.peekInstance();
6376                                if (imm != null && imm.isActive(this)) {
6377                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
6378                                }
6379                            }
6380                        }
6381                    }
6382                    return super.onKeyUp(keyCode, event);
6383                }
6384                break;
6385        }
6386
6387        if (mEditor != null && mEditor.mKeyListener != null)
6388            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
6389                return true;
6390
6391        if (mMovement != null && mLayout != null)
6392            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
6393                return true;
6394
6395        return super.onKeyUp(keyCode, event);
6396    }
6397
6398    @Override
6399    public boolean onCheckIsTextEditor() {
6400        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
6401    }
6402
6403    @Override
6404    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
6405        if (onCheckIsTextEditor() && isEnabled()) {
6406            mEditor.createInputMethodStateIfNeeded();
6407            outAttrs.inputType = getInputType();
6408            if (mEditor.mInputContentType != null) {
6409                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
6410                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
6411                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
6412                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
6413                outAttrs.extras = mEditor.mInputContentType.extras;
6414            } else {
6415                outAttrs.imeOptions = EditorInfo.IME_NULL;
6416            }
6417            if (focusSearch(FOCUS_DOWN) != null) {
6418                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
6419            }
6420            if (focusSearch(FOCUS_UP) != null) {
6421                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
6422            }
6423            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
6424                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
6425                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
6426                    // An action has not been set, but the enter key will move to
6427                    // the next focus, so set the action to that.
6428                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
6429                } else {
6430                    // An action has not been set, and there is no focus to move
6431                    // to, so let's just supply a "done" action.
6432                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
6433                }
6434                if (!shouldAdvanceFocusOnEnter()) {
6435                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6436                }
6437            }
6438            if (isMultilineInputType(outAttrs.inputType)) {
6439                // Multi-line text editors should always show an enter key.
6440                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6441            }
6442            outAttrs.hintText = mHint;
6443            // LocaleList is designed to be immutable.  This is theoretically equivalent to copy
6444            // the snapshot of the current text locales.
6445            outAttrs.locales = getTextLocales();
6446            if (mText instanceof Editable) {
6447                InputConnection ic = new EditableInputConnection(this);
6448                outAttrs.initialSelStart = getSelectionStart();
6449                outAttrs.initialSelEnd = getSelectionEnd();
6450                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
6451                return ic;
6452            }
6453        }
6454        return null;
6455    }
6456
6457    /**
6458     * If this TextView contains editable content, extract a portion of it
6459     * based on the information in <var>request</var> in to <var>outText</var>.
6460     * @return Returns true if the text was successfully extracted, else false.
6461     */
6462    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
6463        createEditorIfNeeded();
6464        return mEditor.extractText(request, outText);
6465    }
6466
6467    /**
6468     * This is used to remove all style-impacting spans from text before new
6469     * extracted text is being replaced into it, so that we don't have any
6470     * lingering spans applied during the replace.
6471     */
6472    static void removeParcelableSpans(Spannable spannable, int start, int end) {
6473        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
6474        int i = spans.length;
6475        while (i > 0) {
6476            i--;
6477            spannable.removeSpan(spans[i]);
6478        }
6479    }
6480
6481    /**
6482     * Apply to this text view the given extracted text, as previously
6483     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
6484     */
6485    public void setExtractedText(ExtractedText text) {
6486        Editable content = getEditableText();
6487        if (text.text != null) {
6488            if (content == null) {
6489                setText(text.text, TextView.BufferType.EDITABLE);
6490            } else {
6491                int start = 0;
6492                int end = content.length();
6493
6494                if (text.partialStartOffset >= 0) {
6495                    final int N = content.length();
6496                    start = text.partialStartOffset;
6497                    if (start > N) start = N;
6498                    end = text.partialEndOffset;
6499                    if (end > N) end = N;
6500                }
6501
6502                removeParcelableSpans(content, start, end);
6503                if (TextUtils.equals(content.subSequence(start, end), text.text)) {
6504                    if (text.text instanceof Spanned) {
6505                        // OK to copy spans only.
6506                        TextUtils.copySpansFrom((Spanned) text.text, start, end,
6507                                Object.class, content, start);
6508                    }
6509                } else {
6510                    content.replace(start, end, text.text);
6511                }
6512            }
6513        }
6514
6515        // Now set the selection position...  make sure it is in range, to
6516        // avoid crashes.  If this is a partial update, it is possible that
6517        // the underlying text may have changed, causing us problems here.
6518        // Also we just don't want to trust clients to do the right thing.
6519        Spannable sp = (Spannable)getText();
6520        final int N = sp.length();
6521        int start = text.selectionStart;
6522        if (start < 0) start = 0;
6523        else if (start > N) start = N;
6524        int end = text.selectionEnd;
6525        if (end < 0) end = 0;
6526        else if (end > N) end = N;
6527        Selection.setSelection(sp, start, end);
6528
6529        // Finally, update the selection mode.
6530        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
6531            MetaKeyKeyListener.startSelecting(this, sp);
6532        } else {
6533            MetaKeyKeyListener.stopSelecting(this, sp);
6534        }
6535    }
6536
6537    /**
6538     * @hide
6539     */
6540    public void setExtracting(ExtractedTextRequest req) {
6541        if (mEditor.mInputMethodState != null) {
6542            mEditor.mInputMethodState.mExtractedTextRequest = req;
6543        }
6544        // This would stop a possible selection mode, but no such mode is started in case
6545        // extracted mode will start. Some text is selected though, and will trigger an action mode
6546        // in the extracted view.
6547        mEditor.hideCursorAndSpanControllers();
6548        stopTextActionMode();
6549    }
6550
6551    /**
6552     * Called by the framework in response to a text completion from
6553     * the current input method, provided by it calling
6554     * {@link InputConnection#commitCompletion
6555     * InputConnection.commitCompletion()}.  The default implementation does
6556     * nothing; text views that are supporting auto-completion should override
6557     * this to do their desired behavior.
6558     *
6559     * @param text The auto complete text the user has selected.
6560     */
6561    public void onCommitCompletion(CompletionInfo text) {
6562        // intentionally empty
6563    }
6564
6565    /**
6566     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
6567     * a dictionnary) from the current input method, provided by it calling
6568     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
6569     * implementation flashes the background of the corrected word to provide feedback to the user.
6570     *
6571     * @param info The auto correct info about the text that was corrected.
6572     */
6573    public void onCommitCorrection(CorrectionInfo info) {
6574        if (mEditor != null) mEditor.onCommitCorrection(info);
6575    }
6576
6577    public void beginBatchEdit() {
6578        if (mEditor != null) mEditor.beginBatchEdit();
6579    }
6580
6581    public void endBatchEdit() {
6582        if (mEditor != null) mEditor.endBatchEdit();
6583    }
6584
6585    /**
6586     * Called by the framework in response to a request to begin a batch
6587     * of edit operations through a call to link {@link #beginBatchEdit()}.
6588     */
6589    public void onBeginBatchEdit() {
6590        // intentionally empty
6591    }
6592
6593    /**
6594     * Called by the framework in response to a request to end a batch
6595     * of edit operations through a call to link {@link #endBatchEdit}.
6596     */
6597    public void onEndBatchEdit() {
6598        // intentionally empty
6599    }
6600
6601    /**
6602     * Called by the framework in response to a private command from the
6603     * current method, provided by it calling
6604     * {@link InputConnection#performPrivateCommand
6605     * InputConnection.performPrivateCommand()}.
6606     *
6607     * @param action The action name of the command.
6608     * @param data Any additional data for the command.  This may be null.
6609     * @return Return true if you handled the command, else false.
6610     */
6611    public boolean onPrivateIMECommand(String action, Bundle data) {
6612        return false;
6613    }
6614
6615    private void nullLayouts() {
6616        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
6617            mSavedLayout = (BoringLayout) mLayout;
6618        }
6619        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
6620            mSavedHintLayout = (BoringLayout) mHintLayout;
6621        }
6622
6623        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
6624
6625        mBoring = mHintBoring = null;
6626
6627        // Since it depends on the value of mLayout
6628        if (mEditor != null) mEditor.prepareCursorControllers();
6629    }
6630
6631    /**
6632     * Make a new Layout based on the already-measured size of the view,
6633     * on the assumption that it was measured correctly at some point.
6634     */
6635    private void assumeLayout() {
6636        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6637
6638        if (width < 1) {
6639            width = 0;
6640        }
6641
6642        int physicalWidth = width;
6643
6644        if (mHorizontallyScrolling) {
6645            width = VERY_WIDE;
6646        }
6647
6648        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
6649                      physicalWidth, false);
6650    }
6651
6652    private Layout.Alignment getLayoutAlignment() {
6653        Layout.Alignment alignment;
6654        switch (getTextAlignment()) {
6655            case TEXT_ALIGNMENT_GRAVITY:
6656                switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
6657                    case Gravity.START:
6658                        alignment = Layout.Alignment.ALIGN_NORMAL;
6659                        break;
6660                    case Gravity.END:
6661                        alignment = Layout.Alignment.ALIGN_OPPOSITE;
6662                        break;
6663                    case Gravity.LEFT:
6664                        alignment = Layout.Alignment.ALIGN_LEFT;
6665                        break;
6666                    case Gravity.RIGHT:
6667                        alignment = Layout.Alignment.ALIGN_RIGHT;
6668                        break;
6669                    case Gravity.CENTER_HORIZONTAL:
6670                        alignment = Layout.Alignment.ALIGN_CENTER;
6671                        break;
6672                    default:
6673                        alignment = Layout.Alignment.ALIGN_NORMAL;
6674                        break;
6675                }
6676                break;
6677            case TEXT_ALIGNMENT_TEXT_START:
6678                alignment = Layout.Alignment.ALIGN_NORMAL;
6679                break;
6680            case TEXT_ALIGNMENT_TEXT_END:
6681                alignment = Layout.Alignment.ALIGN_OPPOSITE;
6682                break;
6683            case TEXT_ALIGNMENT_CENTER:
6684                alignment = Layout.Alignment.ALIGN_CENTER;
6685                break;
6686            case TEXT_ALIGNMENT_VIEW_START:
6687                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6688                        Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
6689                break;
6690            case TEXT_ALIGNMENT_VIEW_END:
6691                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6692                        Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
6693                break;
6694            case TEXT_ALIGNMENT_INHERIT:
6695                // This should never happen as we have already resolved the text alignment
6696                // but better safe than sorry so we just fall through
6697            default:
6698                alignment = Layout.Alignment.ALIGN_NORMAL;
6699                break;
6700        }
6701        return alignment;
6702    }
6703
6704    /**
6705     * The width passed in is now the desired layout width,
6706     * not the full view width with padding.
6707     * {@hide}
6708     */
6709    protected void makeNewLayout(int wantWidth, int hintWidth,
6710                                 BoringLayout.Metrics boring,
6711                                 BoringLayout.Metrics hintBoring,
6712                                 int ellipsisWidth, boolean bringIntoView) {
6713        stopMarquee();
6714
6715        // Update "old" cached values
6716        mOldMaximum = mMaximum;
6717        mOldMaxMode = mMaxMode;
6718
6719        mHighlightPathBogus = true;
6720
6721        if (wantWidth < 0) {
6722            wantWidth = 0;
6723        }
6724        if (hintWidth < 0) {
6725            hintWidth = 0;
6726        }
6727
6728        Layout.Alignment alignment = getLayoutAlignment();
6729        final boolean testDirChange = mSingleLine && mLayout != null &&
6730            (alignment == Layout.Alignment.ALIGN_NORMAL ||
6731             alignment == Layout.Alignment.ALIGN_OPPOSITE);
6732        int oldDir = 0;
6733        if (testDirChange) oldDir = mLayout.getParagraphDirection(0);
6734        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
6735        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
6736                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
6737        TruncateAt effectiveEllipsize = mEllipsize;
6738        if (mEllipsize == TruncateAt.MARQUEE &&
6739                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6740            effectiveEllipsize = TruncateAt.END_SMALL;
6741        }
6742
6743        if (mTextDir == null) {
6744            mTextDir = getTextDirectionHeuristic();
6745        }
6746
6747        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
6748                effectiveEllipsize, effectiveEllipsize == mEllipsize);
6749        if (switchEllipsize) {
6750            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
6751                    TruncateAt.END : TruncateAt.MARQUEE;
6752            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
6753                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
6754        }
6755
6756        shouldEllipsize = mEllipsize != null;
6757        mHintLayout = null;
6758
6759        if (mHint != null) {
6760            if (shouldEllipsize) hintWidth = wantWidth;
6761
6762            if (hintBoring == UNKNOWN_BORING) {
6763                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
6764                                                   mHintBoring);
6765                if (hintBoring != null) {
6766                    mHintBoring = hintBoring;
6767                }
6768            }
6769
6770            if (hintBoring != null) {
6771                if (hintBoring.width <= hintWidth &&
6772                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
6773                    if (mSavedHintLayout != null) {
6774                        mHintLayout = mSavedHintLayout.
6775                                replaceOrMake(mHint, mTextPaint,
6776                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6777                                hintBoring, mIncludePad);
6778                    } else {
6779                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6780                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6781                                hintBoring, mIncludePad);
6782                    }
6783
6784                    mSavedHintLayout = (BoringLayout) mHintLayout;
6785                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
6786                    if (mSavedHintLayout != null) {
6787                        mHintLayout = mSavedHintLayout.
6788                                replaceOrMake(mHint, mTextPaint,
6789                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6790                                hintBoring, mIncludePad, mEllipsize,
6791                                ellipsisWidth);
6792                    } else {
6793                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6794                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6795                                hintBoring, mIncludePad, mEllipsize,
6796                                ellipsisWidth);
6797                    }
6798                }
6799            }
6800            // TODO: code duplication with makeSingleLayout()
6801            if (mHintLayout == null) {
6802                StaticLayout.Builder builder = StaticLayout.Builder.obtain(mHint, 0,
6803                        mHint.length(), mTextPaint, hintWidth)
6804                        .setAlignment(alignment)
6805                        .setTextDirection(mTextDir)
6806                        .setLineSpacing(mSpacingAdd, mSpacingMult)
6807                        .setIncludePad(mIncludePad)
6808                        .setBreakStrategy(mBreakStrategy)
6809                        .setHyphenationFrequency(mHyphenationFrequency);
6810                if (shouldEllipsize) {
6811                    builder.setEllipsize(mEllipsize)
6812                            .setEllipsizedWidth(ellipsisWidth)
6813                            .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6814                }
6815                mHintLayout = builder.build();
6816            }
6817        }
6818
6819        if (bringIntoView || (testDirChange && oldDir != mLayout.getParagraphDirection(0))) {
6820            registerForPreDraw();
6821        }
6822
6823        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6824            if (!compressText(ellipsisWidth)) {
6825                final int height = mLayoutParams.height;
6826                // If the size of the view does not depend on the size of the text, try to
6827                // start the marquee immediately
6828                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
6829                    startMarquee();
6830                } else {
6831                    // Defer the start of the marquee until we know our width (see setFrame())
6832                    mRestartMarquee = true;
6833                }
6834            }
6835        }
6836
6837        // CursorControllers need a non-null mLayout
6838        if (mEditor != null) mEditor.prepareCursorControllers();
6839    }
6840
6841    /**
6842     * @hide
6843     */
6844    protected Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
6845            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
6846            boolean useSaved) {
6847        Layout result = null;
6848        if (mText instanceof Spannable) {
6849            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
6850                    alignment, mTextDir, mSpacingMult, mSpacingAdd, mIncludePad,
6851                    mBreakStrategy, mHyphenationFrequency,
6852                    getKeyListener() == null ? effectiveEllipsize : null, ellipsisWidth);
6853        } else {
6854            if (boring == UNKNOWN_BORING) {
6855                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6856                if (boring != null) {
6857                    mBoring = boring;
6858                }
6859            }
6860
6861            if (boring != null) {
6862                if (boring.width <= wantWidth &&
6863                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
6864                    if (useSaved && mSavedLayout != null) {
6865                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6866                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6867                                boring, mIncludePad);
6868                    } else {
6869                        result = BoringLayout.make(mTransformed, mTextPaint,
6870                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6871                                boring, mIncludePad);
6872                    }
6873
6874                    if (useSaved) {
6875                        mSavedLayout = (BoringLayout) result;
6876                    }
6877                } else if (shouldEllipsize && boring.width <= wantWidth) {
6878                    if (useSaved && mSavedLayout != null) {
6879                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6880                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6881                                boring, mIncludePad, effectiveEllipsize,
6882                                ellipsisWidth);
6883                    } else {
6884                        result = BoringLayout.make(mTransformed, mTextPaint,
6885                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6886                                boring, mIncludePad, effectiveEllipsize,
6887                                ellipsisWidth);
6888                    }
6889                }
6890            }
6891        }
6892        if (result == null) {
6893            StaticLayout.Builder builder = StaticLayout.Builder.obtain(mTransformed,
6894                    0, mTransformed.length(), mTextPaint, wantWidth)
6895                    .setAlignment(alignment)
6896                    .setTextDirection(mTextDir)
6897                    .setLineSpacing(mSpacingAdd, mSpacingMult)
6898                    .setIncludePad(mIncludePad)
6899                    .setBreakStrategy(mBreakStrategy)
6900                    .setHyphenationFrequency(mHyphenationFrequency);
6901            if (shouldEllipsize) {
6902                builder.setEllipsize(effectiveEllipsize)
6903                        .setEllipsizedWidth(ellipsisWidth)
6904                        .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6905            }
6906            // TODO: explore always setting maxLines
6907            result = builder.build();
6908        }
6909        return result;
6910    }
6911
6912    private boolean compressText(float width) {
6913        if (isHardwareAccelerated()) return false;
6914
6915        // Only compress the text if it hasn't been compressed by the previous pass
6916        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
6917                mTextPaint.getTextScaleX() == 1.0f) {
6918            final float textWidth = mLayout.getLineWidth(0);
6919            final float overflow = (textWidth + 1.0f - width) / width;
6920            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
6921                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
6922                post(new Runnable() {
6923                    public void run() {
6924                        requestLayout();
6925                    }
6926                });
6927                return true;
6928            }
6929        }
6930
6931        return false;
6932    }
6933
6934    private static int desired(Layout layout) {
6935        int n = layout.getLineCount();
6936        CharSequence text = layout.getText();
6937        float max = 0;
6938
6939        // if any line was wrapped, we can't use it.
6940        // but it's ok for the last line not to have a newline
6941
6942        for (int i = 0; i < n - 1; i++) {
6943            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
6944                return -1;
6945        }
6946
6947        for (int i = 0; i < n; i++) {
6948            max = Math.max(max, layout.getLineWidth(i));
6949        }
6950
6951        return (int) Math.ceil(max);
6952    }
6953
6954    /**
6955     * Set whether the TextView includes extra top and bottom padding to make
6956     * room for accents that go above the normal ascent and descent.
6957     * The default is true.
6958     *
6959     * @see #getIncludeFontPadding()
6960     *
6961     * @attr ref android.R.styleable#TextView_includeFontPadding
6962     */
6963    public void setIncludeFontPadding(boolean includepad) {
6964        if (mIncludePad != includepad) {
6965            mIncludePad = includepad;
6966
6967            if (mLayout != null) {
6968                nullLayouts();
6969                requestLayout();
6970                invalidate();
6971            }
6972        }
6973    }
6974
6975    /**
6976     * Gets whether the TextView includes extra top and bottom padding to make
6977     * room for accents that go above the normal ascent and descent.
6978     *
6979     * @see #setIncludeFontPadding(boolean)
6980     *
6981     * @attr ref android.R.styleable#TextView_includeFontPadding
6982     */
6983    public boolean getIncludeFontPadding() {
6984        return mIncludePad;
6985    }
6986
6987    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
6988
6989    @Override
6990    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
6991        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
6992        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
6993        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
6994        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
6995
6996        int width;
6997        int height;
6998
6999        BoringLayout.Metrics boring = UNKNOWN_BORING;
7000        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
7001
7002        if (mTextDir == null) {
7003            mTextDir = getTextDirectionHeuristic();
7004        }
7005
7006        int des = -1;
7007        boolean fromexisting = false;
7008
7009        if (widthMode == MeasureSpec.EXACTLY) {
7010            // Parent has told us how big to be. So be it.
7011            width = widthSize;
7012        } else {
7013            if (mLayout != null && mEllipsize == null) {
7014                des = desired(mLayout);
7015            }
7016
7017            if (des < 0) {
7018                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
7019                if (boring != null) {
7020                    mBoring = boring;
7021                }
7022            } else {
7023                fromexisting = true;
7024            }
7025
7026            if (boring == null || boring == UNKNOWN_BORING) {
7027                if (des < 0) {
7028                    des = (int) Math.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
7029                }
7030                width = des;
7031            } else {
7032                width = boring.width;
7033            }
7034
7035            final Drawables dr = mDrawables;
7036            if (dr != null) {
7037                width = Math.max(width, dr.mDrawableWidthTop);
7038                width = Math.max(width, dr.mDrawableWidthBottom);
7039            }
7040
7041            if (mHint != null) {
7042                int hintDes = -1;
7043                int hintWidth;
7044
7045                if (mHintLayout != null && mEllipsize == null) {
7046                    hintDes = desired(mHintLayout);
7047                }
7048
7049                if (hintDes < 0) {
7050                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
7051                    if (hintBoring != null) {
7052                        mHintBoring = hintBoring;
7053                    }
7054                }
7055
7056                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
7057                    if (hintDes < 0) {
7058                        hintDes = (int) Math.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
7059                    }
7060                    hintWidth = hintDes;
7061                } else {
7062                    hintWidth = hintBoring.width;
7063                }
7064
7065                if (hintWidth > width) {
7066                    width = hintWidth;
7067                }
7068            }
7069
7070            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
7071
7072            if (mMaxWidthMode == EMS) {
7073                width = Math.min(width, mMaxWidth * getLineHeight());
7074            } else {
7075                width = Math.min(width, mMaxWidth);
7076            }
7077
7078            if (mMinWidthMode == EMS) {
7079                width = Math.max(width, mMinWidth * getLineHeight());
7080            } else {
7081                width = Math.max(width, mMinWidth);
7082            }
7083
7084            // Check against our minimum width
7085            width = Math.max(width, getSuggestedMinimumWidth());
7086
7087            if (widthMode == MeasureSpec.AT_MOST) {
7088                width = Math.min(widthSize, width);
7089            }
7090        }
7091
7092        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
7093        int unpaddedWidth = want;
7094
7095        if (mHorizontallyScrolling) want = VERY_WIDE;
7096
7097        int hintWant = want;
7098        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
7099
7100        if (mLayout == null) {
7101            makeNewLayout(want, hintWant, boring, hintBoring,
7102                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7103        } else {
7104            final boolean layoutChanged = (mLayout.getWidth() != want) ||
7105                    (hintWidth != hintWant) ||
7106                    (mLayout.getEllipsizedWidth() !=
7107                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
7108
7109            final boolean widthChanged = (mHint == null) &&
7110                    (mEllipsize == null) &&
7111                    (want > mLayout.getWidth()) &&
7112                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
7113
7114            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
7115
7116            if (layoutChanged || maximumChanged) {
7117                if (!maximumChanged && widthChanged) {
7118                    mLayout.increaseWidthTo(want);
7119                } else {
7120                    makeNewLayout(want, hintWant, boring, hintBoring,
7121                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7122                }
7123            } else {
7124                // Nothing has changed
7125            }
7126        }
7127
7128        if (heightMode == MeasureSpec.EXACTLY) {
7129            // Parent has told us how big to be. So be it.
7130            height = heightSize;
7131            mDesiredHeightAtMeasure = -1;
7132        } else {
7133            int desired = getDesiredHeight();
7134
7135            height = desired;
7136            mDesiredHeightAtMeasure = desired;
7137
7138            if (heightMode == MeasureSpec.AT_MOST) {
7139                height = Math.min(desired, heightSize);
7140            }
7141        }
7142
7143        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
7144        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
7145            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
7146        }
7147
7148        /*
7149         * We didn't let makeNewLayout() register to bring the cursor into view,
7150         * so do it here if there is any possibility that it is needed.
7151         */
7152        if (mMovement != null ||
7153            mLayout.getWidth() > unpaddedWidth ||
7154            mLayout.getHeight() > unpaddedHeight) {
7155            registerForPreDraw();
7156        } else {
7157            scrollTo(0, 0);
7158        }
7159
7160        setMeasuredDimension(width, height);
7161    }
7162
7163    private int getDesiredHeight() {
7164        return Math.max(
7165                getDesiredHeight(mLayout, true),
7166                getDesiredHeight(mHintLayout, mEllipsize != null));
7167    }
7168
7169    private int getDesiredHeight(Layout layout, boolean cap) {
7170        if (layout == null) {
7171            return 0;
7172        }
7173
7174        int linecount = layout.getLineCount();
7175        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
7176        int desired = layout.getLineTop(linecount);
7177
7178        final Drawables dr = mDrawables;
7179        if (dr != null) {
7180            desired = Math.max(desired, dr.mDrawableHeightLeft);
7181            desired = Math.max(desired, dr.mDrawableHeightRight);
7182        }
7183
7184        desired += pad;
7185
7186        if (mMaxMode == LINES) {
7187            /*
7188             * Don't cap the hint to a certain number of lines.
7189             * (Do cap it, though, if we have a maximum pixel height.)
7190             */
7191            if (cap) {
7192                if (linecount > mMaximum) {
7193                    desired = layout.getLineTop(mMaximum);
7194
7195                    if (dr != null) {
7196                        desired = Math.max(desired, dr.mDrawableHeightLeft);
7197                        desired = Math.max(desired, dr.mDrawableHeightRight);
7198                    }
7199
7200                    desired += pad;
7201                    linecount = mMaximum;
7202                }
7203            }
7204        } else {
7205            desired = Math.min(desired, mMaximum);
7206        }
7207
7208        if (mMinMode == LINES) {
7209            if (linecount < mMinimum) {
7210                desired += getLineHeight() * (mMinimum - linecount);
7211            }
7212        } else {
7213            desired = Math.max(desired, mMinimum);
7214        }
7215
7216        // Check against our minimum height
7217        desired = Math.max(desired, getSuggestedMinimumHeight());
7218
7219        return desired;
7220    }
7221
7222    /**
7223     * Check whether a change to the existing text layout requires a
7224     * new view layout.
7225     */
7226    private void checkForResize() {
7227        boolean sizeChanged = false;
7228
7229        if (mLayout != null) {
7230            // Check if our width changed
7231            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
7232                sizeChanged = true;
7233                invalidate();
7234            }
7235
7236            // Check if our height changed
7237            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
7238                int desiredHeight = getDesiredHeight();
7239
7240                if (desiredHeight != this.getHeight()) {
7241                    sizeChanged = true;
7242                }
7243            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
7244                if (mDesiredHeightAtMeasure >= 0) {
7245                    int desiredHeight = getDesiredHeight();
7246
7247                    if (desiredHeight != mDesiredHeightAtMeasure) {
7248                        sizeChanged = true;
7249                    }
7250                }
7251            }
7252        }
7253
7254        if (sizeChanged) {
7255            requestLayout();
7256            // caller will have already invalidated
7257        }
7258    }
7259
7260    /**
7261     * Check whether entirely new text requires a new view layout
7262     * or merely a new text layout.
7263     */
7264    private void checkForRelayout() {
7265        // If we have a fixed width, we can just swap in a new text layout
7266        // if the text height stays the same or if the view height is fixed.
7267
7268        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
7269                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
7270                (mHint == null || mHintLayout != null) &&
7271                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
7272            // Static width, so try making a new text layout.
7273
7274            int oldht = mLayout.getHeight();
7275            int want = mLayout.getWidth();
7276            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
7277
7278            /*
7279             * No need to bring the text into view, since the size is not
7280             * changing (unless we do the requestLayout(), in which case it
7281             * will happen at measure).
7282             */
7283            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
7284                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
7285                          false);
7286
7287            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
7288                // In a fixed-height view, so use our new text layout.
7289                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
7290                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
7291                    invalidate();
7292                    return;
7293                }
7294
7295                // Dynamic height, but height has stayed the same,
7296                // so use our new text layout.
7297                if (mLayout.getHeight() == oldht &&
7298                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
7299                    invalidate();
7300                    return;
7301                }
7302            }
7303
7304            // We lose: the height has changed and we have a dynamic height.
7305            // Request a new view layout using our new text layout.
7306            requestLayout();
7307            invalidate();
7308        } else {
7309            // Dynamic width, so we have no choice but to request a new
7310            // view layout with a new text layout.
7311            nullLayouts();
7312            requestLayout();
7313            invalidate();
7314        }
7315    }
7316
7317    @Override
7318    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
7319        super.onLayout(changed, left, top, right, bottom);
7320        if (mDeferScroll >= 0) {
7321            int curs = mDeferScroll;
7322            mDeferScroll = -1;
7323            bringPointIntoView(Math.min(curs, mText.length()));
7324        }
7325    }
7326
7327    private boolean isShowingHint() {
7328        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
7329    }
7330
7331    /**
7332     * Returns true if anything changed.
7333     */
7334    private boolean bringTextIntoView() {
7335        Layout layout = isShowingHint() ? mHintLayout : mLayout;
7336        int line = 0;
7337        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7338            line = layout.getLineCount() - 1;
7339        }
7340
7341        Layout.Alignment a = layout.getParagraphAlignment(line);
7342        int dir = layout.getParagraphDirection(line);
7343        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7344        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7345        int ht = layout.getHeight();
7346
7347        int scrollx, scrolly;
7348
7349        // Convert to left, center, or right alignment.
7350        if (a == Layout.Alignment.ALIGN_NORMAL) {
7351            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
7352                Layout.Alignment.ALIGN_RIGHT;
7353        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
7354            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
7355                Layout.Alignment.ALIGN_LEFT;
7356        }
7357
7358        if (a == Layout.Alignment.ALIGN_CENTER) {
7359            /*
7360             * Keep centered if possible, or, if it is too wide to fit,
7361             * keep leading edge in view.
7362             */
7363
7364            int left = (int) Math.floor(layout.getLineLeft(line));
7365            int right = (int) Math.ceil(layout.getLineRight(line));
7366
7367            if (right - left < hspace) {
7368                scrollx = (right + left) / 2 - hspace / 2;
7369            } else {
7370                if (dir < 0) {
7371                    scrollx = right - hspace;
7372                } else {
7373                    scrollx = left;
7374                }
7375            }
7376        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
7377            int right = (int) Math.ceil(layout.getLineRight(line));
7378            scrollx = right - hspace;
7379        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
7380            scrollx = (int) Math.floor(layout.getLineLeft(line));
7381        }
7382
7383        if (ht < vspace) {
7384            scrolly = 0;
7385        } else {
7386            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7387                scrolly = ht - vspace;
7388            } else {
7389                scrolly = 0;
7390            }
7391        }
7392
7393        if (scrollx != mScrollX || scrolly != mScrollY) {
7394            scrollTo(scrollx, scrolly);
7395            return true;
7396        } else {
7397            return false;
7398        }
7399    }
7400
7401    /**
7402     * Move the point, specified by the offset, into the view if it is needed.
7403     * This has to be called after layout. Returns true if anything changed.
7404     */
7405    public boolean bringPointIntoView(int offset) {
7406        if (isLayoutRequested()) {
7407            mDeferScroll = offset;
7408            return false;
7409        }
7410        boolean changed = false;
7411
7412        Layout layout = isShowingHint() ? mHintLayout: mLayout;
7413
7414        if (layout == null) return changed;
7415
7416        int line = layout.getLineForOffset(offset);
7417
7418        int grav;
7419
7420        switch (layout.getParagraphAlignment(line)) {
7421            case ALIGN_LEFT:
7422                grav = 1;
7423                break;
7424            case ALIGN_RIGHT:
7425                grav = -1;
7426                break;
7427            case ALIGN_NORMAL:
7428                grav = layout.getParagraphDirection(line);
7429                break;
7430            case ALIGN_OPPOSITE:
7431                grav = -layout.getParagraphDirection(line);
7432                break;
7433            case ALIGN_CENTER:
7434            default:
7435                grav = 0;
7436                break;
7437        }
7438
7439        // We only want to clamp the cursor to fit within the layout width
7440        // in left-to-right modes, because in a right to left alignment,
7441        // we want to scroll to keep the line-right on the screen, as other
7442        // lines are likely to have text flush with the right margin, which
7443        // we want to keep visible.
7444        // A better long-term solution would probably be to measure both
7445        // the full line and a blank-trimmed version, and, for example, use
7446        // the latter measurement for centering and right alignment, but for
7447        // the time being we only implement the cursor clamping in left to
7448        // right where it is most likely to be annoying.
7449        final boolean clamped = grav > 0;
7450        // FIXME: Is it okay to truncate this, or should we round?
7451        final int x = (int)layout.getPrimaryHorizontal(offset, clamped);
7452        final int top = layout.getLineTop(line);
7453        final int bottom = layout.getLineTop(line + 1);
7454
7455        int left = (int) Math.floor(layout.getLineLeft(line));
7456        int right = (int) Math.ceil(layout.getLineRight(line));
7457        int ht = layout.getHeight();
7458
7459        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7460        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7461        if (!mHorizontallyScrolling && right - left > hspace && right > x) {
7462            // If cursor has been clamped, make sure we don't scroll.
7463            right = Math.max(x, left + hspace);
7464        }
7465
7466        int hslack = (bottom - top) / 2;
7467        int vslack = hslack;
7468
7469        if (vslack > vspace / 4)
7470            vslack = vspace / 4;
7471        if (hslack > hspace / 4)
7472            hslack = hspace / 4;
7473
7474        int hs = mScrollX;
7475        int vs = mScrollY;
7476
7477        if (top - vs < vslack)
7478            vs = top - vslack;
7479        if (bottom - vs > vspace - vslack)
7480            vs = bottom - (vspace - vslack);
7481        if (ht - vs < vspace)
7482            vs = ht - vspace;
7483        if (0 - vs > 0)
7484            vs = 0;
7485
7486        if (grav != 0) {
7487            if (x - hs < hslack) {
7488                hs = x - hslack;
7489            }
7490            if (x - hs > hspace - hslack) {
7491                hs = x - (hspace - hslack);
7492            }
7493        }
7494
7495        if (grav < 0) {
7496            if (left - hs > 0)
7497                hs = left;
7498            if (right - hs < hspace)
7499                hs = right - hspace;
7500        } else if (grav > 0) {
7501            if (right - hs < hspace)
7502                hs = right - hspace;
7503            if (left - hs > 0)
7504                hs = left;
7505        } else /* grav == 0 */ {
7506            if (right - left <= hspace) {
7507                /*
7508                 * If the entire text fits, center it exactly.
7509                 */
7510                hs = left - (hspace - (right - left)) / 2;
7511            } else if (x > right - hslack) {
7512                /*
7513                 * If we are near the right edge, keep the right edge
7514                 * at the edge of the view.
7515                 */
7516                hs = right - hspace;
7517            } else if (x < left + hslack) {
7518                /*
7519                 * If we are near the left edge, keep the left edge
7520                 * at the edge of the view.
7521                 */
7522                hs = left;
7523            } else if (left > hs) {
7524                /*
7525                 * Is there whitespace visible at the left?  Fix it if so.
7526                 */
7527                hs = left;
7528            } else if (right < hs + hspace) {
7529                /*
7530                 * Is there whitespace visible at the right?  Fix it if so.
7531                 */
7532                hs = right - hspace;
7533            } else {
7534                /*
7535                 * Otherwise, float as needed.
7536                 */
7537                if (x - hs < hslack) {
7538                    hs = x - hslack;
7539                }
7540                if (x - hs > hspace - hslack) {
7541                    hs = x - (hspace - hslack);
7542                }
7543            }
7544        }
7545
7546        if (hs != mScrollX || vs != mScrollY) {
7547            if (mScroller == null) {
7548                scrollTo(hs, vs);
7549            } else {
7550                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
7551                int dx = hs - mScrollX;
7552                int dy = vs - mScrollY;
7553
7554                if (duration > ANIMATED_SCROLL_GAP) {
7555                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
7556                    awakenScrollBars(mScroller.getDuration());
7557                    invalidate();
7558                } else {
7559                    if (!mScroller.isFinished()) {
7560                        mScroller.abortAnimation();
7561                    }
7562
7563                    scrollBy(dx, dy);
7564                }
7565
7566                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
7567            }
7568
7569            changed = true;
7570        }
7571
7572        if (isFocused()) {
7573            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
7574            // requestRectangleOnScreen() is in terms of content coordinates.
7575
7576            // The offsets here are to ensure the rectangle we are using is
7577            // within our view bounds, in case the cursor is on the far left
7578            // or right.  If it isn't withing the bounds, then this request
7579            // will be ignored.
7580            if (mTempRect == null) mTempRect = new Rect();
7581            mTempRect.set(x - 2, top, x + 2, bottom);
7582            getInterestingRect(mTempRect, line);
7583            mTempRect.offset(mScrollX, mScrollY);
7584
7585            if (requestRectangleOnScreen(mTempRect)) {
7586                changed = true;
7587            }
7588        }
7589
7590        return changed;
7591    }
7592
7593    /**
7594     * Move the cursor, if needed, so that it is at an offset that is visible
7595     * to the user.  This will not move the cursor if it represents more than
7596     * one character (a selection range).  This will only work if the
7597     * TextView contains spannable text; otherwise it will do nothing.
7598     *
7599     * @return True if the cursor was actually moved, false otherwise.
7600     */
7601    public boolean moveCursorToVisibleOffset() {
7602        if (!(mText instanceof Spannable)) {
7603            return false;
7604        }
7605        int start = getSelectionStart();
7606        int end = getSelectionEnd();
7607        if (start != end) {
7608            return false;
7609        }
7610
7611        // First: make sure the line is visible on screen:
7612
7613        int line = mLayout.getLineForOffset(start);
7614
7615        final int top = mLayout.getLineTop(line);
7616        final int bottom = mLayout.getLineTop(line + 1);
7617        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7618        int vslack = (bottom - top) / 2;
7619        if (vslack > vspace / 4)
7620            vslack = vspace / 4;
7621        final int vs = mScrollY;
7622
7623        if (top < (vs+vslack)) {
7624            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
7625        } else if (bottom > (vspace+vs-vslack)) {
7626            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
7627        }
7628
7629        // Next: make sure the character is visible on screen:
7630
7631        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7632        final int hs = mScrollX;
7633        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
7634        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
7635
7636        // line might contain bidirectional text
7637        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
7638        final int highChar = leftChar > rightChar ? leftChar : rightChar;
7639
7640        int newStart = start;
7641        if (newStart < lowChar) {
7642            newStart = lowChar;
7643        } else if (newStart > highChar) {
7644            newStart = highChar;
7645        }
7646
7647        if (newStart != start) {
7648            Selection.setSelection((Spannable)mText, newStart);
7649            return true;
7650        }
7651
7652        return false;
7653    }
7654
7655    @Override
7656    public void computeScroll() {
7657        if (mScroller != null) {
7658            if (mScroller.computeScrollOffset()) {
7659                mScrollX = mScroller.getCurrX();
7660                mScrollY = mScroller.getCurrY();
7661                invalidateParentCaches();
7662                postInvalidate();  // So we draw again
7663            }
7664        }
7665    }
7666
7667    private void getInterestingRect(Rect r, int line) {
7668        convertFromViewportToContentCoordinates(r);
7669
7670        // Rectangle can can be expanded on first and last line to take
7671        // padding into account.
7672        // TODO Take left/right padding into account too?
7673        if (line == 0) r.top -= getExtendedPaddingTop();
7674        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
7675    }
7676
7677    private void convertFromViewportToContentCoordinates(Rect r) {
7678        final int horizontalOffset = viewportToContentHorizontalOffset();
7679        r.left += horizontalOffset;
7680        r.right += horizontalOffset;
7681
7682        final int verticalOffset = viewportToContentVerticalOffset();
7683        r.top += verticalOffset;
7684        r.bottom += verticalOffset;
7685    }
7686
7687    int viewportToContentHorizontalOffset() {
7688        return getCompoundPaddingLeft() - mScrollX;
7689    }
7690
7691    int viewportToContentVerticalOffset() {
7692        int offset = getExtendedPaddingTop() - mScrollY;
7693        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
7694            offset += getVerticalOffset(false);
7695        }
7696        return offset;
7697    }
7698
7699    @Override
7700    public void debug(int depth) {
7701        super.debug(depth);
7702
7703        String output = debugIndent(depth);
7704        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
7705                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
7706                + "} ";
7707
7708        if (mText != null) {
7709
7710            output += "mText=\"" + mText + "\" ";
7711            if (mLayout != null) {
7712                output += "mLayout width=" + mLayout.getWidth()
7713                        + " height=" + mLayout.getHeight();
7714            }
7715        } else {
7716            output += "mText=NULL";
7717        }
7718        Log.d(VIEW_LOG_TAG, output);
7719    }
7720
7721    /**
7722     * Convenience for {@link Selection#getSelectionStart}.
7723     */
7724    @ViewDebug.ExportedProperty(category = "text")
7725    public int getSelectionStart() {
7726        return Selection.getSelectionStart(getText());
7727    }
7728
7729    /**
7730     * Convenience for {@link Selection#getSelectionEnd}.
7731     */
7732    @ViewDebug.ExportedProperty(category = "text")
7733    public int getSelectionEnd() {
7734        return Selection.getSelectionEnd(getText());
7735    }
7736
7737    /**
7738     * Return true iff there is a selection inside this text view.
7739     */
7740    public boolean hasSelection() {
7741        final int selectionStart = getSelectionStart();
7742        final int selectionEnd = getSelectionEnd();
7743
7744        return selectionStart >= 0 && selectionStart != selectionEnd;
7745    }
7746
7747    String getSelectedText() {
7748        if (!hasSelection()) {
7749            return null;
7750        }
7751
7752        final int start = getSelectionStart();
7753        final int end = getSelectionEnd();
7754        return String.valueOf(
7755                start > end ? mText.subSequence(end, start) : mText.subSequence(start, end));
7756    }
7757
7758    /**
7759     * Sets the properties of this field (lines, horizontally scrolling,
7760     * transformation method) to be for a single-line input.
7761     *
7762     * @attr ref android.R.styleable#TextView_singleLine
7763     */
7764    public void setSingleLine() {
7765        setSingleLine(true);
7766    }
7767
7768    /**
7769     * Sets the properties of this field to transform input to ALL CAPS
7770     * display. This may use a "small caps" formatting if available.
7771     * This setting will be ignored if this field is editable or selectable.
7772     *
7773     * This call replaces the current transformation method. Disabling this
7774     * will not necessarily restore the previous behavior from before this
7775     * was enabled.
7776     *
7777     * @see #setTransformationMethod(TransformationMethod)
7778     * @attr ref android.R.styleable#TextView_textAllCaps
7779     */
7780    public void setAllCaps(boolean allCaps) {
7781        if (allCaps) {
7782            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
7783        } else {
7784            setTransformationMethod(null);
7785        }
7786    }
7787
7788    /**
7789     * If true, sets the properties of this field (number of lines, horizontally scrolling,
7790     * transformation method) to be for a single-line input; if false, restores these to the default
7791     * conditions.
7792     *
7793     * Note that the default conditions are not necessarily those that were in effect prior this
7794     * method, and you may want to reset these properties to your custom values.
7795     *
7796     * @attr ref android.R.styleable#TextView_singleLine
7797     */
7798    @android.view.RemotableViewMethod
7799    public void setSingleLine(boolean singleLine) {
7800        // Could be used, but may break backward compatibility.
7801        // if (mSingleLine == singleLine) return;
7802        setInputTypeSingleLine(singleLine);
7803        applySingleLine(singleLine, true, true);
7804    }
7805
7806    /**
7807     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
7808     * @param singleLine
7809     */
7810    private void setInputTypeSingleLine(boolean singleLine) {
7811        if (mEditor != null &&
7812                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
7813            if (singleLine) {
7814                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7815            } else {
7816                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7817            }
7818        }
7819    }
7820
7821    private void applySingleLine(boolean singleLine, boolean applyTransformation,
7822            boolean changeMaxLines) {
7823        mSingleLine = singleLine;
7824        if (singleLine) {
7825            setLines(1);
7826            setHorizontallyScrolling(true);
7827            if (applyTransformation) {
7828                setTransformationMethod(SingleLineTransformationMethod.getInstance());
7829            }
7830        } else {
7831            if (changeMaxLines) {
7832                setMaxLines(Integer.MAX_VALUE);
7833            }
7834            setHorizontallyScrolling(false);
7835            if (applyTransformation) {
7836                setTransformationMethod(null);
7837            }
7838        }
7839    }
7840
7841    /**
7842     * Causes words in the text that are longer than the view is wide
7843     * to be ellipsized instead of broken in the middle.  You may also
7844     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
7845     * to constrain the text to a single line.  Use <code>null</code>
7846     * to turn off ellipsizing.
7847     *
7848     * If {@link #setMaxLines} has been used to set two or more lines,
7849     * only {@link android.text.TextUtils.TruncateAt#END} and
7850     * {@link android.text.TextUtils.TruncateAt#MARQUEE} are supported
7851     * (other ellipsizing types will not do anything).
7852     *
7853     * @attr ref android.R.styleable#TextView_ellipsize
7854     */
7855    public void setEllipsize(TextUtils.TruncateAt where) {
7856        // TruncateAt is an enum. != comparison is ok between these singleton objects.
7857        if (mEllipsize != where) {
7858            mEllipsize = where;
7859
7860            if (mLayout != null) {
7861                nullLayouts();
7862                requestLayout();
7863                invalidate();
7864            }
7865        }
7866    }
7867
7868    /**
7869     * Sets how many times to repeat the marquee animation. Only applied if the
7870     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
7871     *
7872     * @see #getMarqueeRepeatLimit()
7873     *
7874     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7875     */
7876    public void setMarqueeRepeatLimit(int marqueeLimit) {
7877        mMarqueeRepeatLimit = marqueeLimit;
7878    }
7879
7880    /**
7881     * Gets the number of times the marquee animation is repeated. Only meaningful if the
7882     * TextView has marquee enabled.
7883     *
7884     * @return the number of times the marquee animation is repeated. -1 if the animation
7885     * repeats indefinitely
7886     *
7887     * @see #setMarqueeRepeatLimit(int)
7888     *
7889     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7890     */
7891    public int getMarqueeRepeatLimit() {
7892        return mMarqueeRepeatLimit;
7893    }
7894
7895    /**
7896     * Returns where, if anywhere, words that are longer than the view
7897     * is wide should be ellipsized.
7898     */
7899    @ViewDebug.ExportedProperty
7900    public TextUtils.TruncateAt getEllipsize() {
7901        return mEllipsize;
7902    }
7903
7904    /**
7905     * Set the TextView so that when it takes focus, all the text is
7906     * selected.
7907     *
7908     * @attr ref android.R.styleable#TextView_selectAllOnFocus
7909     */
7910    @android.view.RemotableViewMethod
7911    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
7912        createEditorIfNeeded();
7913        mEditor.mSelectAllOnFocus = selectAllOnFocus;
7914
7915        if (selectAllOnFocus && !(mText instanceof Spannable)) {
7916            setText(mText, BufferType.SPANNABLE);
7917        }
7918    }
7919
7920    /**
7921     * Set whether the cursor is visible. The default is true. Note that this property only
7922     * makes sense for editable TextView.
7923     *
7924     * @see #isCursorVisible()
7925     *
7926     * @attr ref android.R.styleable#TextView_cursorVisible
7927     */
7928    @android.view.RemotableViewMethod
7929    public void setCursorVisible(boolean visible) {
7930        if (visible && mEditor == null) return; // visible is the default value with no edit data
7931        createEditorIfNeeded();
7932        if (mEditor.mCursorVisible != visible) {
7933            mEditor.mCursorVisible = visible;
7934            invalidate();
7935
7936            mEditor.makeBlink();
7937
7938            // InsertionPointCursorController depends on mCursorVisible
7939            mEditor.prepareCursorControllers();
7940        }
7941    }
7942
7943    /**
7944     * @return whether or not the cursor is visible (assuming this TextView is editable)
7945     *
7946     * @see #setCursorVisible(boolean)
7947     *
7948     * @attr ref android.R.styleable#TextView_cursorVisible
7949     */
7950    public boolean isCursorVisible() {
7951        // true is the default value
7952        return mEditor == null ? true : mEditor.mCursorVisible;
7953    }
7954
7955    private boolean canMarquee() {
7956        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
7957        return width > 0 && (mLayout.getLineWidth(0) > width ||
7958                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
7959                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
7960    }
7961
7962    private void startMarquee() {
7963        // Do not ellipsize EditText
7964        if (getKeyListener() != null) return;
7965
7966        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
7967            return;
7968        }
7969
7970        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
7971                getLineCount() == 1 && canMarquee()) {
7972
7973            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7974                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
7975                final Layout tmp = mLayout;
7976                mLayout = mSavedMarqueeModeLayout;
7977                mSavedMarqueeModeLayout = tmp;
7978                setHorizontalFadingEdgeEnabled(true);
7979                requestLayout();
7980                invalidate();
7981            }
7982
7983            if (mMarquee == null) mMarquee = new Marquee(this);
7984            mMarquee.start(mMarqueeRepeatLimit);
7985        }
7986    }
7987
7988    private void stopMarquee() {
7989        if (mMarquee != null && !mMarquee.isStopped()) {
7990            mMarquee.stop();
7991        }
7992
7993        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
7994            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
7995            final Layout tmp = mSavedMarqueeModeLayout;
7996            mSavedMarqueeModeLayout = mLayout;
7997            mLayout = tmp;
7998            setHorizontalFadingEdgeEnabled(false);
7999            requestLayout();
8000            invalidate();
8001        }
8002    }
8003
8004    private void startStopMarquee(boolean start) {
8005        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8006            if (start) {
8007                startMarquee();
8008            } else {
8009                stopMarquee();
8010            }
8011        }
8012    }
8013
8014    /**
8015     * This method is called when the text is changed, in case any subclasses
8016     * would like to know.
8017     *
8018     * Within <code>text</code>, the <code>lengthAfter</code> characters
8019     * beginning at <code>start</code> have just replaced old text that had
8020     * length <code>lengthBefore</code>. It is an error to attempt to make
8021     * changes to <code>text</code> from this callback.
8022     *
8023     * @param text The text the TextView is displaying
8024     * @param start The offset of the start of the range of the text that was
8025     * modified
8026     * @param lengthBefore The length of the former text that has been replaced
8027     * @param lengthAfter The length of the replacement modified text
8028     */
8029    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
8030        // intentionally empty, template pattern method can be overridden by subclasses
8031    }
8032
8033    /**
8034     * This method is called when the selection has changed, in case any
8035     * subclasses would like to know.
8036     *
8037     * @param selStart The new selection start location.
8038     * @param selEnd The new selection end location.
8039     */
8040    protected void onSelectionChanged(int selStart, int selEnd) {
8041        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
8042    }
8043
8044    /**
8045     * Adds a TextWatcher to the list of those whose methods are called
8046     * whenever this TextView's text changes.
8047     * <p>
8048     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
8049     * not called after {@link #setText} calls.  Now, doing {@link #setText}
8050     * if there are any text changed listeners forces the buffer type to
8051     * Editable if it would not otherwise be and does call this method.
8052     */
8053    public void addTextChangedListener(TextWatcher watcher) {
8054        if (mListeners == null) {
8055            mListeners = new ArrayList<TextWatcher>();
8056        }
8057
8058        mListeners.add(watcher);
8059    }
8060
8061    /**
8062     * Removes the specified TextWatcher from the list of those whose
8063     * methods are called
8064     * whenever this TextView's text changes.
8065     */
8066    public void removeTextChangedListener(TextWatcher watcher) {
8067        if (mListeners != null) {
8068            int i = mListeners.indexOf(watcher);
8069
8070            if (i >= 0) {
8071                mListeners.remove(i);
8072            }
8073        }
8074    }
8075
8076    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
8077        if (mListeners != null) {
8078            final ArrayList<TextWatcher> list = mListeners;
8079            final int count = list.size();
8080            for (int i = 0; i < count; i++) {
8081                list.get(i).beforeTextChanged(text, start, before, after);
8082            }
8083        }
8084
8085        // The spans that are inside or intersect the modified region no longer make sense
8086        removeIntersectingNonAdjacentSpans(start, start + before, SpellCheckSpan.class);
8087        removeIntersectingNonAdjacentSpans(start, start + before, SuggestionSpan.class);
8088    }
8089
8090    // Removes all spans that are inside or actually overlap the start..end range
8091    private <T> void removeIntersectingNonAdjacentSpans(int start, int end, Class<T> type) {
8092        if (!(mText instanceof Editable)) return;
8093        Editable text = (Editable) mText;
8094
8095        T[] spans = text.getSpans(start, end, type);
8096        final int length = spans.length;
8097        for (int i = 0; i < length; i++) {
8098            final int spanStart = text.getSpanStart(spans[i]);
8099            final int spanEnd = text.getSpanEnd(spans[i]);
8100            if (spanEnd == start || spanStart == end) break;
8101            text.removeSpan(spans[i]);
8102        }
8103    }
8104
8105    void removeAdjacentSuggestionSpans(final int pos) {
8106        if (!(mText instanceof Editable)) return;
8107        final Editable text = (Editable) mText;
8108
8109        final SuggestionSpan[] spans = text.getSpans(pos, pos, SuggestionSpan.class);
8110        final int length = spans.length;
8111        for (int i = 0; i < length; i++) {
8112            final int spanStart = text.getSpanStart(spans[i]);
8113            final int spanEnd = text.getSpanEnd(spans[i]);
8114            if (spanEnd == pos || spanStart == pos) {
8115                if (SpellChecker.haveWordBoundariesChanged(text, pos, pos, spanStart, spanEnd)) {
8116                    text.removeSpan(spans[i]);
8117                }
8118            }
8119        }
8120    }
8121
8122    /**
8123     * Not private so it can be called from an inner class without going
8124     * through a thunk.
8125     */
8126    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
8127        if (mListeners != null) {
8128            final ArrayList<TextWatcher> list = mListeners;
8129            final int count = list.size();
8130            for (int i = 0; i < count; i++) {
8131                list.get(i).onTextChanged(text, start, before, after);
8132            }
8133        }
8134
8135        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
8136    }
8137
8138    /**
8139     * Not private so it can be called from an inner class without going
8140     * through a thunk.
8141     */
8142    void sendAfterTextChanged(Editable text) {
8143        if (mListeners != null) {
8144            final ArrayList<TextWatcher> list = mListeners;
8145            final int count = list.size();
8146            for (int i = 0; i < count; i++) {
8147                list.get(i).afterTextChanged(text);
8148            }
8149        }
8150        hideErrorIfUnchanged();
8151    }
8152
8153    void updateAfterEdit() {
8154        invalidate();
8155        int curs = getSelectionStart();
8156
8157        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
8158            registerForPreDraw();
8159        }
8160
8161        checkForResize();
8162
8163        if (curs >= 0) {
8164            mHighlightPathBogus = true;
8165            if (mEditor != null) mEditor.makeBlink();
8166            bringPointIntoView(curs);
8167        }
8168    }
8169
8170    /**
8171     * Not private so it can be called from an inner class without going
8172     * through a thunk.
8173     */
8174    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
8175        sLastCutCopyOrTextChangedTime = 0;
8176
8177        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8178        if (ims == null || ims.mBatchEditNesting == 0) {
8179            updateAfterEdit();
8180        }
8181        if (ims != null) {
8182            ims.mContentChanged = true;
8183            if (ims.mChangedStart < 0) {
8184                ims.mChangedStart = start;
8185                ims.mChangedEnd = start+before;
8186            } else {
8187                ims.mChangedStart = Math.min(ims.mChangedStart, start);
8188                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
8189            }
8190            ims.mChangedDelta += after-before;
8191        }
8192        resetErrorChangedFlag();
8193        sendOnTextChanged(buffer, start, before, after);
8194        onTextChanged(buffer, start, before, after);
8195    }
8196
8197    /**
8198     * Not private so it can be called from an inner class without going
8199     * through a thunk.
8200     */
8201    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
8202        // XXX Make the start and end move together if this ends up
8203        // spending too much time invalidating.
8204
8205        boolean selChanged = false;
8206        int newSelStart=-1, newSelEnd=-1;
8207
8208        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8209
8210        if (what == Selection.SELECTION_END) {
8211            selChanged = true;
8212            newSelEnd = newStart;
8213
8214            if (oldStart >= 0 || newStart >= 0) {
8215                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
8216                checkForResize();
8217                registerForPreDraw();
8218                if (mEditor != null) mEditor.makeBlink();
8219            }
8220        }
8221
8222        if (what == Selection.SELECTION_START) {
8223            selChanged = true;
8224            newSelStart = newStart;
8225
8226            if (oldStart >= 0 || newStart >= 0) {
8227                int end = Selection.getSelectionEnd(buf);
8228                invalidateCursor(end, oldStart, newStart);
8229            }
8230        }
8231
8232        if (selChanged) {
8233            mHighlightPathBogus = true;
8234            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
8235
8236            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
8237                if (newSelStart < 0) {
8238                    newSelStart = Selection.getSelectionStart(buf);
8239                }
8240                if (newSelEnd < 0) {
8241                    newSelEnd = Selection.getSelectionEnd(buf);
8242                }
8243                onSelectionChanged(newSelStart, newSelEnd);
8244            }
8245        }
8246
8247        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
8248                what instanceof CharacterStyle) {
8249            if (ims == null || ims.mBatchEditNesting == 0) {
8250                invalidate();
8251                mHighlightPathBogus = true;
8252                checkForResize();
8253            } else {
8254                ims.mContentChanged = true;
8255            }
8256            if (mEditor != null) {
8257                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
8258                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
8259            }
8260        }
8261
8262        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
8263            mHighlightPathBogus = true;
8264            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
8265                ims.mSelectionModeChanged = true;
8266            }
8267
8268            if (Selection.getSelectionStart(buf) >= 0) {
8269                if (ims == null || ims.mBatchEditNesting == 0) {
8270                    invalidateCursor();
8271                } else {
8272                    ims.mCursorChanged = true;
8273                }
8274            }
8275        }
8276
8277        if (what instanceof ParcelableSpan) {
8278            // If this is a span that can be sent to a remote process,
8279            // the current extract editor would be interested in it.
8280            if (ims != null && ims.mExtractedTextRequest != null) {
8281                if (ims.mBatchEditNesting != 0) {
8282                    if (oldStart >= 0) {
8283                        if (ims.mChangedStart > oldStart) {
8284                            ims.mChangedStart = oldStart;
8285                        }
8286                        if (ims.mChangedStart > oldEnd) {
8287                            ims.mChangedStart = oldEnd;
8288                        }
8289                    }
8290                    if (newStart >= 0) {
8291                        if (ims.mChangedStart > newStart) {
8292                            ims.mChangedStart = newStart;
8293                        }
8294                        if (ims.mChangedStart > newEnd) {
8295                            ims.mChangedStart = newEnd;
8296                        }
8297                    }
8298                } else {
8299                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
8300                            + oldStart + "-" + oldEnd + ","
8301                            + newStart + "-" + newEnd + " " + what);
8302                    ims.mContentChanged = true;
8303                }
8304            }
8305        }
8306
8307        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
8308                what instanceof SpellCheckSpan) {
8309            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
8310        }
8311    }
8312
8313    /**
8314     * @hide
8315     */
8316    @Override
8317    public void dispatchFinishTemporaryDetach() {
8318        mDispatchTemporaryDetach = true;
8319        super.dispatchFinishTemporaryDetach();
8320        mDispatchTemporaryDetach = false;
8321    }
8322
8323    @Override
8324    public void onStartTemporaryDetach() {
8325        super.onStartTemporaryDetach();
8326        // Only track when onStartTemporaryDetach() is called directly,
8327        // usually because this instance is an editable field in a list
8328        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
8329
8330        // Tell the editor that we are temporarily detached. It can use this to preserve
8331        // selection state as needed.
8332        if (mEditor != null) mEditor.mTemporaryDetach = true;
8333    }
8334
8335    @Override
8336    public void onFinishTemporaryDetach() {
8337        super.onFinishTemporaryDetach();
8338        // Only track when onStartTemporaryDetach() is called directly,
8339        // usually because this instance is an editable field in a list
8340        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
8341        if (mEditor != null) mEditor.mTemporaryDetach = false;
8342    }
8343
8344    @Override
8345    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
8346        if (mTemporaryDetach) {
8347            // If we are temporarily in the detach state, then do nothing.
8348            super.onFocusChanged(focused, direction, previouslyFocusedRect);
8349            return;
8350        }
8351
8352        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
8353
8354        if (focused) {
8355            if (mText instanceof Spannable) {
8356                Spannable sp = (Spannable) mText;
8357                MetaKeyKeyListener.resetMetaState(sp);
8358            }
8359        }
8360
8361        startStopMarquee(focused);
8362
8363        if (mTransformation != null) {
8364            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
8365        }
8366
8367        super.onFocusChanged(focused, direction, previouslyFocusedRect);
8368    }
8369
8370    @Override
8371    public void onWindowFocusChanged(boolean hasWindowFocus) {
8372        super.onWindowFocusChanged(hasWindowFocus);
8373
8374        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
8375
8376        startStopMarquee(hasWindowFocus);
8377    }
8378
8379    @Override
8380    protected void onVisibilityChanged(View changedView, int visibility) {
8381        super.onVisibilityChanged(changedView, visibility);
8382        if (mEditor != null && visibility != VISIBLE) {
8383            mEditor.hideCursorAndSpanControllers();
8384            stopTextActionMode();
8385        }
8386    }
8387
8388    /**
8389     * Use {@link BaseInputConnection#removeComposingSpans
8390     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
8391     * state from this text view.
8392     */
8393    public void clearComposingText() {
8394        if (mText instanceof Spannable) {
8395            BaseInputConnection.removeComposingSpans((Spannable)mText);
8396        }
8397    }
8398
8399    @Override
8400    public void setSelected(boolean selected) {
8401        boolean wasSelected = isSelected();
8402
8403        super.setSelected(selected);
8404
8405        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8406            if (selected) {
8407                startMarquee();
8408            } else {
8409                stopMarquee();
8410            }
8411        }
8412    }
8413
8414    @Override
8415    public boolean onTouchEvent(MotionEvent event) {
8416        final int action = event.getActionMasked();
8417        if (mEditor != null) {
8418            mEditor.onTouchEvent(event);
8419
8420            if (mEditor.mSelectionModifierCursorController != null &&
8421                    mEditor.mSelectionModifierCursorController.isDragAcceleratorActive()) {
8422                return true;
8423            }
8424        }
8425
8426        final boolean superResult = super.onTouchEvent(event);
8427
8428        /*
8429         * Don't handle the release after a long press, because it will move the selection away from
8430         * whatever the menu action was trying to affect. If the long press should have triggered an
8431         * insertion action mode, we can now actually show it.
8432         */
8433        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
8434            mEditor.mDiscardNextActionUp = false;
8435
8436            if (mEditor.mIsInsertionActionModeStartPending) {
8437                mEditor.startInsertionActionMode();
8438                mEditor.mIsInsertionActionModeStartPending = false;
8439            }
8440            return superResult;
8441        }
8442
8443        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
8444                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
8445
8446         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
8447                && mText instanceof Spannable && mLayout != null) {
8448            boolean handled = false;
8449
8450            if (mMovement != null) {
8451                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
8452            }
8453
8454            final boolean textIsSelectable = isTextSelectable();
8455            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
8456                // The LinkMovementMethod which should handle taps on links has not been installed
8457                // on non editable text that support text selection.
8458                // We reproduce its behavior here to open links for these.
8459                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
8460                        getSelectionEnd(), ClickableSpan.class);
8461
8462                if (links.length > 0) {
8463                    links[0].onClick(this);
8464                    handled = true;
8465                }
8466            }
8467
8468            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
8469                // Show the IME, except when selecting in read-only text.
8470                final InputMethodManager imm = InputMethodManager.peekInstance();
8471                viewClicked(imm);
8472                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
8473                    handled |= imm != null && imm.showSoftInput(this, 0);
8474                }
8475
8476                // The above condition ensures that the mEditor is not null
8477                mEditor.onTouchUpEvent(event);
8478
8479                handled = true;
8480            }
8481
8482            if (handled) {
8483                return true;
8484            }
8485        }
8486
8487        return superResult;
8488    }
8489
8490    @Override
8491    public boolean onGenericMotionEvent(MotionEvent event) {
8492        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8493            try {
8494                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
8495                    return true;
8496                }
8497            } catch (AbstractMethodError ex) {
8498                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
8499                // Ignore its absence in case third party applications implemented the
8500                // interface directly.
8501            }
8502        }
8503        return super.onGenericMotionEvent(event);
8504    }
8505
8506    @Override
8507    protected void onCreateContextMenu(ContextMenu menu) {
8508        if (mEditor != null) {
8509            mEditor.onCreateContextMenu(menu);
8510        }
8511    }
8512
8513    @Override
8514    public boolean showContextMenu() {
8515        if (mEditor != null) {
8516            mEditor.setContextMenuAnchor(Float.NaN, Float.NaN);
8517        }
8518        return super.showContextMenu();
8519    }
8520
8521    @Override
8522    public boolean showContextMenu(float x, float y) {
8523        if (mEditor != null) {
8524            mEditor.setContextMenuAnchor(x, y);
8525        }
8526        return super.showContextMenu(x, y);
8527    }
8528
8529    /**
8530     * @return True iff this TextView contains a text that can be edited, or if this is
8531     * a selectable TextView.
8532     */
8533    boolean isTextEditable() {
8534        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
8535    }
8536
8537    /**
8538     * Returns true, only while processing a touch gesture, if the initial
8539     * touch down event caused focus to move to the text view and as a result
8540     * its selection changed.  Only valid while processing the touch gesture
8541     * of interest, in an editable text view.
8542     */
8543    public boolean didTouchFocusSelect() {
8544        return mEditor != null && mEditor.mTouchFocusSelected;
8545    }
8546
8547    @Override
8548    public void cancelLongPress() {
8549        super.cancelLongPress();
8550        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
8551    }
8552
8553    @Override
8554    public boolean onTrackballEvent(MotionEvent event) {
8555        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8556            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
8557                return true;
8558            }
8559        }
8560
8561        return super.onTrackballEvent(event);
8562    }
8563
8564    public void setScroller(Scroller s) {
8565        mScroller = s;
8566    }
8567
8568    @Override
8569    protected float getLeftFadingEdgeStrength() {
8570        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8571                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8572            if (mMarquee != null && !mMarquee.isStopped()) {
8573                final Marquee marquee = mMarquee;
8574                if (marquee.shouldDrawLeftFade()) {
8575                    final float scroll = marquee.getScroll();
8576                    return scroll / getHorizontalFadingEdgeLength();
8577                } else {
8578                    return 0.0f;
8579                }
8580            } else if (getLineCount() == 1) {
8581                final int layoutDirection = getLayoutDirection();
8582                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8583                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8584                    case Gravity.LEFT:
8585                        return 0.0f;
8586                    case Gravity.RIGHT:
8587                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
8588                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8589                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8590                    case Gravity.CENTER_HORIZONTAL:
8591                    case Gravity.FILL_HORIZONTAL:
8592                        final int textDirection = mLayout.getParagraphDirection(0);
8593                        if (textDirection == Layout.DIR_LEFT_TO_RIGHT) {
8594                            return 0.0f;
8595                        } else {
8596                            return (mLayout.getLineRight(0) - (mRight - mLeft) -
8597                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8598                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8599                        }
8600                }
8601            }
8602        }
8603        return super.getLeftFadingEdgeStrength();
8604    }
8605
8606    @Override
8607    protected float getRightFadingEdgeStrength() {
8608        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8609                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8610            if (mMarquee != null && !mMarquee.isStopped()) {
8611                final Marquee marquee = mMarquee;
8612                final float maxFadeScroll = marquee.getMaxFadeScroll();
8613                final float scroll = marquee.getScroll();
8614                return (maxFadeScroll - scroll) / getHorizontalFadingEdgeLength();
8615            } else if (getLineCount() == 1) {
8616                final int layoutDirection = getLayoutDirection();
8617                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8618                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8619                    case Gravity.LEFT:
8620                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
8621                                getCompoundPaddingRight();
8622                        final float lineWidth = mLayout.getLineWidth(0);
8623                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
8624                    case Gravity.RIGHT:
8625                        return 0.0f;
8626                    case Gravity.CENTER_HORIZONTAL:
8627                    case Gravity.FILL_HORIZONTAL:
8628                        final int textDirection = mLayout.getParagraphDirection(0);
8629                        if (textDirection == Layout.DIR_RIGHT_TO_LEFT) {
8630                            return 0.0f;
8631                        } else {
8632                            return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
8633                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
8634                                getHorizontalFadingEdgeLength();
8635                        }
8636                }
8637            }
8638        }
8639        return super.getRightFadingEdgeStrength();
8640    }
8641
8642    @Override
8643    protected int computeHorizontalScrollRange() {
8644        if (mLayout != null) {
8645            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
8646                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
8647        }
8648
8649        return super.computeHorizontalScrollRange();
8650    }
8651
8652    @Override
8653    protected int computeVerticalScrollRange() {
8654        if (mLayout != null)
8655            return mLayout.getHeight();
8656
8657        return super.computeVerticalScrollRange();
8658    }
8659
8660    @Override
8661    protected int computeVerticalScrollExtent() {
8662        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
8663    }
8664
8665    @Override
8666    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
8667        super.findViewsWithText(outViews, searched, flags);
8668        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
8669                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
8670            String searchedLowerCase = searched.toString().toLowerCase();
8671            String textLowerCase = mText.toString().toLowerCase();
8672            if (textLowerCase.contains(searchedLowerCase)) {
8673                outViews.add(this);
8674            }
8675        }
8676    }
8677
8678    public enum BufferType {
8679        NORMAL, SPANNABLE, EDITABLE,
8680    }
8681
8682    /**
8683     * Returns the TextView_textColor attribute from the TypedArray, if set, or
8684     * the TextAppearance_textColor from the TextView_textAppearance attribute,
8685     * if TextView_textColor was not set directly.
8686     *
8687     * @removed
8688     */
8689    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
8690        if (attrs == null) {
8691            // Preserve behavior prior to removal of this API.
8692            throw new NullPointerException();
8693        }
8694
8695        // It's not safe to use this method from apps. The parameter 'attrs'
8696        // must have been obtained using the TextView filter array which is not
8697        // available to the SDK. As such, we grab a default TypedArray with the
8698        // right filter instead here.
8699        final TypedArray a = context.obtainStyledAttributes(R.styleable.TextView);
8700        ColorStateList colors = a.getColorStateList(R.styleable.TextView_textColor);
8701        if (colors == null) {
8702            final int ap = a.getResourceId(R.styleable.TextView_textAppearance, 0);
8703            if (ap != 0) {
8704                final TypedArray appearance = context.obtainStyledAttributes(
8705                        ap, R.styleable.TextAppearance);
8706                colors = appearance.getColorStateList(R.styleable.TextAppearance_textColor);
8707                appearance.recycle();
8708            }
8709        }
8710        a.recycle();
8711
8712        return colors;
8713    }
8714
8715    /**
8716     * Returns the default color from the TextView_textColor attribute from the
8717     * AttributeSet, if set, or the default color from the
8718     * TextAppearance_textColor from the TextView_textAppearance attribute, if
8719     * TextView_textColor was not set directly.
8720     *
8721     * @removed
8722     */
8723    public static int getTextColor(Context context, TypedArray attrs, int def) {
8724        final ColorStateList colors = getTextColors(context, attrs);
8725        if (colors == null) {
8726            return def;
8727        } else {
8728            return colors.getDefaultColor();
8729        }
8730    }
8731
8732    @Override
8733    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
8734        if (event.hasModifiers(KeyEvent.META_CTRL_ON)) {
8735            // Handle Ctrl-only shortcuts.
8736            switch (keyCode) {
8737            case KeyEvent.KEYCODE_A:
8738                if (canSelectText()) {
8739                    return onTextContextMenuItem(ID_SELECT_ALL);
8740                }
8741                break;
8742            case KeyEvent.KEYCODE_Z:
8743                if (canUndo()) {
8744                    return onTextContextMenuItem(ID_UNDO);
8745                }
8746                break;
8747            case KeyEvent.KEYCODE_X:
8748                if (canCut()) {
8749                    return onTextContextMenuItem(ID_CUT);
8750                }
8751                break;
8752            case KeyEvent.KEYCODE_C:
8753                if (canCopy()) {
8754                    return onTextContextMenuItem(ID_COPY);
8755                }
8756                break;
8757            case KeyEvent.KEYCODE_V:
8758                if (canPaste()) {
8759                    return onTextContextMenuItem(ID_PASTE);
8760                }
8761                break;
8762            }
8763        } else if (event.hasModifiers(KeyEvent.META_CTRL_ON | KeyEvent.META_SHIFT_ON)) {
8764            // Handle Ctrl-Shift shortcuts.
8765            switch (keyCode) {
8766                case KeyEvent.KEYCODE_Z:
8767                    if (canRedo()) {
8768                        return onTextContextMenuItem(ID_REDO);
8769                    }
8770                    break;
8771                case KeyEvent.KEYCODE_V:
8772                    if (canPaste()) {
8773                        return onTextContextMenuItem(ID_PASTE_AS_PLAIN_TEXT);
8774                    }
8775            }
8776        }
8777        return super.onKeyShortcut(keyCode, event);
8778    }
8779
8780    /**
8781     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
8782     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
8783     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
8784     * sufficient.
8785     */
8786    boolean canSelectText() {
8787        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
8788    }
8789
8790    /**
8791     * Test based on the <i>intrinsic</i> charateristics of the TextView.
8792     * The text must be spannable and the movement method must allow for arbitary selection.
8793     *
8794     * See also {@link #canSelectText()}.
8795     */
8796    boolean textCanBeSelected() {
8797        // prepareCursorController() relies on this method.
8798        // If you change this condition, make sure prepareCursorController is called anywhere
8799        // the value of this condition might be changed.
8800        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
8801        return isTextEditable() ||
8802                (isTextSelectable() && mText instanceof Spannable && isEnabled());
8803    }
8804
8805    private Locale getTextServicesLocale(boolean allowNullLocale) {
8806        // Start fetching the text services locale asynchronously.
8807        updateTextServicesLocaleAsync();
8808        // If !allowNullLocale and there is no cached text services locale, just return the default
8809        // locale.
8810        return (mCurrentSpellCheckerLocaleCache == null && !allowNullLocale) ? Locale.getDefault()
8811                : mCurrentSpellCheckerLocaleCache;
8812    }
8813
8814    /**
8815     * This is a temporary method. Future versions may support multi-locale text.
8816     * Caveat: This method may not return the latest text services locale, but this should be
8817     * acceptable and it's more important to make this method asynchronous.
8818     *
8819     * @return The locale that should be used for a word iterator
8820     * in this TextView, based on the current spell checker settings,
8821     * the current IME's locale, or the system default locale.
8822     * Please note that a word iterator in this TextView is different from another word iterator
8823     * used by SpellChecker.java of TextView. This method should be used for the former.
8824     * @hide
8825     */
8826    // TODO: Support multi-locale
8827    // TODO: Update the text services locale immediately after the keyboard locale is switched
8828    // by catching intent of keyboard switch event
8829    public Locale getTextServicesLocale() {
8830        return getTextServicesLocale(false /* allowNullLocale */);
8831    }
8832
8833    /**
8834     * @return true if this TextView is specialized for showing and interacting with the extracted
8835     * text in a full-screen input method.
8836     * @hide
8837     */
8838    public boolean isInExtractedMode() {
8839        return false;
8840    }
8841
8842    /**
8843     * This is a temporary method. Future versions may support multi-locale text.
8844     * Caveat: This method may not return the latest spell checker locale, but this should be
8845     * acceptable and it's more important to make this method asynchronous.
8846     *
8847     * @return The locale that should be used for a spell checker in this TextView,
8848     * based on the current spell checker settings, the current IME's locale, or the system default
8849     * locale.
8850     * @hide
8851     */
8852    public Locale getSpellCheckerLocale() {
8853        return getTextServicesLocale(true /* allowNullLocale */);
8854    }
8855
8856    private void updateTextServicesLocaleAsync() {
8857        // AsyncTask.execute() uses a serial executor which means we don't have
8858        // to lock around updateTextServicesLocaleLocked() to prevent it from
8859        // being executed n times in parallel.
8860        AsyncTask.execute(new Runnable() {
8861            @Override
8862            public void run() {
8863                updateTextServicesLocaleLocked();
8864            }
8865        });
8866    }
8867
8868    private void updateTextServicesLocaleLocked() {
8869        final TextServicesManager textServicesManager = (TextServicesManager)
8870                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
8871        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
8872        final Locale locale;
8873        if (subtype != null) {
8874            locale = subtype.getLocaleObject();
8875        } else {
8876            locale = null;
8877        }
8878        mCurrentSpellCheckerLocaleCache = locale;
8879    }
8880
8881    void onLocaleChanged() {
8882        // Will be re-created on demand in getWordIterator with the proper new locale
8883        mEditor.mWordIterator = null;
8884    }
8885
8886    /**
8887     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
8888     * Made available to achieve a consistent behavior.
8889     * @hide
8890     */
8891    public WordIterator getWordIterator() {
8892        if (mEditor != null) {
8893            return mEditor.getWordIterator();
8894        } else {
8895            return null;
8896        }
8897    }
8898
8899    /** @hide */
8900    @Override
8901    public void onPopulateAccessibilityEventInternal(AccessibilityEvent event) {
8902        super.onPopulateAccessibilityEventInternal(event);
8903
8904        final CharSequence text = getTextForAccessibility();
8905        if (!TextUtils.isEmpty(text)) {
8906            event.getText().add(text);
8907        }
8908    }
8909
8910    /**
8911     * @return true if the user has explicitly allowed accessibility services
8912     * to speak passwords.
8913     */
8914    private boolean shouldSpeakPasswordsForAccessibility() {
8915        return (Settings.Secure.getIntForUser(mContext.getContentResolver(),
8916                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0,
8917                UserHandle.USER_CURRENT_OR_SELF) == 1);
8918    }
8919
8920    @Override
8921    public CharSequence getAccessibilityClassName() {
8922        return TextView.class.getName();
8923    }
8924
8925    @Override
8926    public void onProvideStructure(ViewStructure structure) {
8927        super.onProvideStructure(structure);
8928        final boolean isPassword = hasPasswordTransformationMethod()
8929                || isPasswordInputType(getInputType());
8930        if (!isPassword) {
8931            if (mLayout == null) {
8932                assumeLayout();
8933            }
8934            Layout layout = mLayout;
8935            final int lineCount = layout.getLineCount();
8936            if (lineCount <= 1) {
8937                // Simple case: this is a single line.
8938                structure.setText(getText(), getSelectionStart(), getSelectionEnd());
8939            } else {
8940                // Complex case: multi-line, could be scrolled or within a scroll container
8941                // so some lines are not visible.
8942                final int[] tmpCords = new int[2];
8943                getLocationInWindow(tmpCords);
8944                final int topWindowLocation = tmpCords[1];
8945                View root = this;
8946                ViewParent viewParent = getParent();
8947                while (viewParent instanceof View) {
8948                    root = (View) viewParent;
8949                    viewParent = root.getParent();
8950                }
8951                final int windowHeight = root.getHeight();
8952                final int topLine;
8953                final int bottomLine;
8954                if (topWindowLocation >= 0) {
8955                    // The top of the view is fully within its window; start text at line 0.
8956                    topLine = getLineAtCoordinateUnclamped(0);
8957                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1);
8958                } else {
8959                    // The top of hte window has scrolled off the top of the window; figure out
8960                    // the starting line for this.
8961                    topLine = getLineAtCoordinateUnclamped(-topWindowLocation);
8962                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1-topWindowLocation);
8963                }
8964                // We want to return some contextual lines above/below the lines that are
8965                // actually visible.
8966                int expandedTopLine = topLine - (bottomLine-topLine)/2;
8967                if (expandedTopLine < 0) {
8968                    expandedTopLine = 0;
8969                }
8970                int expandedBottomLine = bottomLine + (bottomLine-topLine)/2;
8971                if (expandedBottomLine >= lineCount) {
8972                    expandedBottomLine = lineCount-1;
8973                }
8974                // Convert lines into character offsets.
8975                int expandedTopChar = layout.getLineStart(expandedTopLine);
8976                int expandedBottomChar = layout.getLineEnd(expandedBottomLine);
8977                // Take into account selection -- if there is a selection, we need to expand
8978                // the text we are returning to include that selection.
8979                final int selStart = getSelectionStart();
8980                final int selEnd = getSelectionEnd();
8981                if (selStart < selEnd) {
8982                    if (selStart < expandedTopChar) {
8983                        expandedTopChar = selStart;
8984                    }
8985                    if (selEnd > expandedBottomChar) {
8986                        expandedBottomChar = selEnd;
8987                    }
8988                }
8989                // Get the text and trim it to the range we are reporting.
8990                CharSequence text = getText();
8991                if (expandedTopChar > 0 || expandedBottomChar < text.length()) {
8992                    text = text.subSequence(expandedTopChar, expandedBottomChar);
8993                }
8994                structure.setText(text, selStart-expandedTopChar, selEnd-expandedTopChar);
8995                final int[] lineOffsets = new int[bottomLine-topLine+1];
8996                final int[] lineBaselines = new int[bottomLine-topLine+1];
8997                final int baselineOffset = getBaselineOffset();
8998                for (int i=topLine; i<=bottomLine; i++) {
8999                    lineOffsets[i-topLine] = layout.getLineStart(i);
9000                    lineBaselines[i-topLine] = layout.getLineBaseline(i) + baselineOffset;
9001                }
9002                structure.setTextLines(lineOffsets, lineBaselines);
9003            }
9004
9005            // Extract style information that applies to the TextView as a whole.
9006            int style = 0;
9007            int typefaceStyle = getTypefaceStyle();
9008            if ((typefaceStyle & Typeface.BOLD) != 0) {
9009                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9010            }
9011            if ((typefaceStyle & Typeface.ITALIC) != 0) {
9012                style |= AssistStructure.ViewNode.TEXT_STYLE_ITALIC;
9013            }
9014
9015            // Global styles can also be set via TextView.setPaintFlags().
9016            int paintFlags = mTextPaint.getFlags();
9017            if ((paintFlags & Paint.FAKE_BOLD_TEXT_FLAG) != 0) {
9018                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9019            }
9020            if ((paintFlags & Paint.UNDERLINE_TEXT_FLAG) != 0) {
9021                style |= AssistStructure.ViewNode.TEXT_STYLE_UNDERLINE;
9022            }
9023            if ((paintFlags & Paint.STRIKE_THRU_TEXT_FLAG) != 0) {
9024                style |= AssistStructure.ViewNode.TEXT_STYLE_STRIKE_THRU;
9025            }
9026
9027            // TextView does not have its own text background color. A background is either part
9028            // of the View (and can be any drawable) or a BackgroundColorSpan inside the text.
9029            structure.setTextStyle(getTextSize(), getCurrentTextColor(),
9030                    AssistStructure.ViewNode.TEXT_COLOR_UNDEFINED /* bgColor */, style);
9031        }
9032        structure.setHint(getHint());
9033    }
9034
9035    /** @hide */
9036    @Override
9037    public void onInitializeAccessibilityEventInternal(AccessibilityEvent event) {
9038        super.onInitializeAccessibilityEventInternal(event);
9039
9040        final boolean isPassword = hasPasswordTransformationMethod();
9041        event.setPassword(isPassword);
9042
9043        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
9044            event.setFromIndex(Selection.getSelectionStart(mText));
9045            event.setToIndex(Selection.getSelectionEnd(mText));
9046            event.setItemCount(mText.length());
9047        }
9048    }
9049
9050    /** @hide */
9051    @Override
9052    public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
9053        super.onInitializeAccessibilityNodeInfoInternal(info);
9054
9055        final boolean isPassword = hasPasswordTransformationMethod();
9056        info.setPassword(isPassword);
9057        info.setText(getTextForAccessibility());
9058
9059        if (mBufferType == BufferType.EDITABLE) {
9060            info.setEditable(true);
9061        }
9062
9063        if (mEditor != null) {
9064            info.setInputType(mEditor.mInputType);
9065
9066            if (mEditor.mError != null) {
9067                info.setContentInvalid(true);
9068                info.setError(mEditor.mError);
9069            }
9070        }
9071
9072        if (!TextUtils.isEmpty(mText)) {
9073            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
9074            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
9075            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
9076                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
9077                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
9078                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
9079                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
9080            info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
9081        }
9082
9083        if (isFocused()) {
9084            if (canCopy()) {
9085                info.addAction(AccessibilityNodeInfo.ACTION_COPY);
9086            }
9087            if (canPaste()) {
9088                info.addAction(AccessibilityNodeInfo.ACTION_PASTE);
9089            }
9090            if (canCut()) {
9091                info.addAction(AccessibilityNodeInfo.ACTION_CUT);
9092            }
9093            if (canShare()) {
9094                info.addAction(new AccessibilityNodeInfo.AccessibilityAction(
9095                        ACCESSIBILITY_ACTION_SHARE,
9096                        getResources().getString(com.android.internal.R.string.share)));
9097            }
9098            if (canProcessText()) {  // also implies mEditor is not null.
9099                mEditor.mProcessTextIntentActionsHandler.onInitializeAccessibilityNodeInfo(info);
9100            }
9101        }
9102
9103        // Check for known input filter types.
9104        final int numFilters = mFilters.length;
9105        for (int i = 0; i < numFilters; i++) {
9106            final InputFilter filter = mFilters[i];
9107            if (filter instanceof InputFilter.LengthFilter) {
9108                info.setMaxTextLength(((InputFilter.LengthFilter) filter).getMax());
9109            }
9110        }
9111
9112        if (!isSingleLine()) {
9113            info.setMultiLine(true);
9114        }
9115    }
9116
9117    /**
9118     * Performs an accessibility action after it has been offered to the
9119     * delegate.
9120     *
9121     * @hide
9122     */
9123    @Override
9124    public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
9125        if (mEditor != null
9126                && mEditor.mProcessTextIntentActionsHandler.performAccessibilityAction(action)) {
9127            return true;
9128        }
9129        switch (action) {
9130            case AccessibilityNodeInfo.ACTION_CLICK: {
9131                return performAccessibilityActionClick(arguments);
9132            }
9133            case AccessibilityNodeInfo.ACTION_COPY: {
9134                if (isFocused() && canCopy()) {
9135                    if (onTextContextMenuItem(ID_COPY)) {
9136                        return true;
9137                    }
9138                }
9139            } return false;
9140            case AccessibilityNodeInfo.ACTION_PASTE: {
9141                if (isFocused() && canPaste()) {
9142                    if (onTextContextMenuItem(ID_PASTE)) {
9143                        return true;
9144                    }
9145                }
9146            } return false;
9147            case AccessibilityNodeInfo.ACTION_CUT: {
9148                if (isFocused() && canCut()) {
9149                    if (onTextContextMenuItem(ID_CUT)) {
9150                        return true;
9151                    }
9152                }
9153            } return false;
9154            case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
9155                ensureIterableTextForAccessibilitySelectable();
9156                CharSequence text = getIterableTextForAccessibility();
9157                if (text == null) {
9158                    return false;
9159                }
9160                final int start = (arguments != null) ? arguments.getInt(
9161                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
9162                final int end = (arguments != null) ? arguments.getInt(
9163                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
9164                if ((getSelectionStart() != start || getSelectionEnd() != end)) {
9165                    // No arguments clears the selection.
9166                    if (start == end && end == -1) {
9167                        Selection.removeSelection((Spannable) text);
9168                        return true;
9169                    }
9170                    if (start >= 0 && start <= end && end <= text.length()) {
9171                        Selection.setSelection((Spannable) text, start, end);
9172                        // Make sure selection mode is engaged.
9173                        if (mEditor != null) {
9174                            mEditor.startSelectionActionMode();
9175                        }
9176                        return true;
9177                    }
9178                }
9179            } return false;
9180            case AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY:
9181            case AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY: {
9182                ensureIterableTextForAccessibilitySelectable();
9183                return super.performAccessibilityActionInternal(action, arguments);
9184            }
9185            case ACCESSIBILITY_ACTION_SHARE: {
9186                if (isFocused() && canShare()) {
9187                    if (onTextContextMenuItem(ID_SHARE)) {
9188                        return true;
9189                    }
9190                }
9191            } return false;
9192            default: {
9193                return super.performAccessibilityActionInternal(action, arguments);
9194            }
9195        }
9196    }
9197
9198    private boolean performAccessibilityActionClick(Bundle arguments) {
9199        boolean handled = false;
9200        boolean processed = false;
9201
9202        if (!isEnabled()) {
9203            return false;
9204        }
9205
9206        if (arguments != null && arguments.containsKey(
9207                AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_SPAN_INDEX_INT)) {
9208            int spanIndex = arguments.getInt(
9209                    AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_SPAN_INDEX_INT, -1);
9210            if (spanIndex >= 0 && hasSpannableText()) {
9211                ClickableSpan[] spans = ((Spannable) mText).getSpans(0,
9212                        mText.length(), ClickableSpan.class);
9213                if (spans != null && spans.length > spanIndex && spans[spanIndex] != null) {
9214                    // Simulate View.onTouchEvent for an ACTION_UP event
9215                    if (isFocusable() && !isFocused()) {
9216                        requestFocus();
9217                    }
9218                    spans[spanIndex].onClick(this);
9219                    handled = true;
9220                }
9221            }
9222            processed = true;
9223        }
9224
9225        if (!processed && arguments != null &&  arguments.containsKey(
9226                AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_CHARACTER_INDEX_INT)) {
9227            int characterIndex = arguments.getInt(
9228                    AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_CHARACTER_INDEX_INT, -1);
9229            if (characterIndex >= 0 && hasSpannableText()) {
9230                ClickableSpan[] spans = ((Spannable) mText).getSpans(characterIndex,
9231                        characterIndex, ClickableSpan.class);
9232                // click only on the first span to keep parity with onTouch() implementation
9233                if (spans != null && spans.length > 0 && spans[0] != null) {
9234                    // Simulate View.onTouchEvent for an ACTION_UP event
9235                    if (isFocusable() && !isFocused()) {
9236                        requestFocus();
9237                    }
9238                    spans[0].onClick(this);
9239                    handled = true;
9240                }
9241            }
9242            processed = true;
9243        }
9244
9245        if (!processed && (isClickable() || isLongClickable())) {
9246            // Simulate View.onTouchEvent for an ACTION_UP event
9247            if (isFocusable() && !isFocused()) {
9248                requestFocus();
9249            }
9250
9251            performClick();
9252            handled = true;
9253        }
9254
9255        // Show the IME, except when selecting in read-only text.
9256        if ((mMovement != null || onCheckIsTextEditor()) && hasSpannableText() && mLayout != null
9257                && (isTextEditable() || isTextSelectable()) && isFocused()) {
9258            final InputMethodManager imm = InputMethodManager.peekInstance();
9259            viewClicked(imm);
9260            if (!isTextSelectable() && mEditor.mShowSoftInputOnFocus && imm != null) {
9261                handled |= imm.showSoftInput(this, 0);
9262            }
9263        }
9264
9265        return handled;
9266    }
9267
9268    private boolean hasSpannableText() {
9269        return mText != null && mText instanceof Spannable;
9270    }
9271
9272    /** @hide */
9273    @Override
9274    public void sendAccessibilityEventInternal(int eventType) {
9275        if (eventType == AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED && mEditor != null) {
9276            mEditor.mProcessTextIntentActionsHandler.initializeAccessibilityActions();
9277        }
9278
9279        // Do not send scroll events since first they are not interesting for
9280        // accessibility and second such events a generated too frequently.
9281        // For details see the implementation of bringTextIntoView().
9282        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
9283            return;
9284        }
9285        super.sendAccessibilityEventInternal(eventType);
9286    }
9287
9288    /**
9289     * Returns the text that should be exposed to accessibility services.
9290     * <p>
9291     * This approximates what is displayed visually. If the user has specified
9292     * that accessibility services should speak passwords, this method will
9293     * bypass any password transformation method and return unobscured text.
9294     *
9295     * @return the text that should be exposed to accessibility services, may
9296     *         be {@code null} if no text is set
9297     */
9298    @Nullable
9299    private CharSequence getTextForAccessibility() {
9300        // If the text is empty, we must be showing the hint text.
9301        if (TextUtils.isEmpty(mText)) {
9302            return mHint;
9303        }
9304
9305        // Check whether we need to bypass the transformation
9306        // method and expose unobscured text.
9307        if (hasPasswordTransformationMethod() && shouldSpeakPasswordsForAccessibility()) {
9308            return mText;
9309        }
9310
9311        // Otherwise, speak whatever text is being displayed.
9312        return mTransformed;
9313    }
9314
9315    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
9316            int fromIndex, int removedCount, int addedCount) {
9317        AccessibilityEvent event =
9318                AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
9319        event.setFromIndex(fromIndex);
9320        event.setRemovedCount(removedCount);
9321        event.setAddedCount(addedCount);
9322        event.setBeforeText(beforeText);
9323        sendAccessibilityEventUnchecked(event);
9324    }
9325
9326    /**
9327     * Returns whether this text view is a current input method target.  The
9328     * default implementation just checks with {@link InputMethodManager}.
9329     */
9330    public boolean isInputMethodTarget() {
9331        InputMethodManager imm = InputMethodManager.peekInstance();
9332        return imm != null && imm.isActive(this);
9333    }
9334
9335    static final int ID_SELECT_ALL = android.R.id.selectAll;
9336    static final int ID_UNDO = android.R.id.undo;
9337    static final int ID_REDO = android.R.id.redo;
9338    static final int ID_CUT = android.R.id.cut;
9339    static final int ID_COPY = android.R.id.copy;
9340    static final int ID_PASTE = android.R.id.paste;
9341    static final int ID_SHARE = android.R.id.shareText;
9342    static final int ID_PASTE_AS_PLAIN_TEXT = android.R.id.pasteAsPlainText;
9343    static final int ID_REPLACE = android.R.id.replaceText;
9344
9345    /**
9346     * Called when a context menu option for the text view is selected.  Currently
9347     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
9348     * {@link android.R.id#copy}, {@link android.R.id#paste} or {@link android.R.id#shareText}.
9349     *
9350     * @return true if the context menu item action was performed.
9351     */
9352    public boolean onTextContextMenuItem(int id) {
9353        int min = 0;
9354        int max = mText.length();
9355
9356        if (isFocused()) {
9357            final int selStart = getSelectionStart();
9358            final int selEnd = getSelectionEnd();
9359
9360            min = Math.max(0, Math.min(selStart, selEnd));
9361            max = Math.max(0, Math.max(selStart, selEnd));
9362        }
9363
9364        switch (id) {
9365            case ID_SELECT_ALL:
9366                // This starts an action mode if triggered from another action mode. Text is
9367                // highlighted, so that it can be bulk edited, like selectAllOnFocus does. Returns
9368                // true even if text is empty.
9369                boolean shouldRestartActionMode =
9370                        mEditor != null && mEditor.mTextActionMode != null;
9371                stopTextActionMode();
9372                selectAllText();
9373                if (shouldRestartActionMode) {
9374                    mEditor.startSelectionActionMode();
9375                }
9376                return true;
9377
9378            case ID_UNDO:
9379                if (mEditor != null) {
9380                    mEditor.undo();
9381                }
9382                return true;  // Returns true even if nothing was undone.
9383
9384            case ID_REDO:
9385                if (mEditor != null) {
9386                    mEditor.redo();
9387                }
9388                return true;  // Returns true even if nothing was undone.
9389
9390            case ID_PASTE:
9391                paste(min, max, true /* withFormatting */);
9392                return true;
9393
9394            case ID_PASTE_AS_PLAIN_TEXT:
9395                paste(min, max, false /* withFormatting */);
9396                return true;
9397
9398            case ID_CUT:
9399                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9400                deleteText_internal(min, max);
9401                stopTextActionMode();
9402                return true;
9403
9404            case ID_COPY:
9405                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9406                stopTextActionMode();
9407                return true;
9408
9409            case ID_REPLACE:
9410                if (mEditor != null) {
9411                    mEditor.replace();
9412                }
9413                return true;
9414
9415            case ID_SHARE:
9416                shareSelectedText();
9417                return true;
9418        }
9419        return false;
9420    }
9421
9422    CharSequence getTransformedText(int start, int end) {
9423        return removeSuggestionSpans(mTransformed.subSequence(start, end));
9424    }
9425
9426    @Override
9427    public boolean performLongClick() {
9428        boolean handled = false;
9429
9430        if (mEditor != null) {
9431            mEditor.mIsBeingLongClicked = true;
9432        }
9433
9434        if (super.performLongClick()) {
9435            handled = true;
9436        }
9437
9438        if (mEditor != null) {
9439            handled |= mEditor.performLongClick(handled);
9440            mEditor.mIsBeingLongClicked = false;
9441        }
9442
9443        if (handled) {
9444            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
9445            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
9446        }
9447
9448        return handled;
9449    }
9450
9451    @Override
9452    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
9453        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
9454        if (mEditor != null) {
9455            mEditor.onScrollChanged();
9456        }
9457    }
9458
9459    /**
9460     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
9461     * by the IME or by the spell checker as the user types. This is done by adding
9462     * {@link SuggestionSpan}s to the text.
9463     *
9464     * When suggestions are enabled (default), this list of suggestions will be displayed when the
9465     * user asks for them on these parts of the text. This value depends on the inputType of this
9466     * TextView.
9467     *
9468     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
9469     *
9470     * In addition, the type variation must be one of
9471     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
9472     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
9473     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
9474     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
9475     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
9476     *
9477     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
9478     *
9479     * @return true if the suggestions popup window is enabled, based on the inputType.
9480     */
9481    public boolean isSuggestionsEnabled() {
9482        if (mEditor == null) return false;
9483        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
9484            return false;
9485        }
9486        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
9487
9488        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
9489        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
9490                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
9491                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
9492                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
9493                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
9494    }
9495
9496    /**
9497     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9498     * selection is initiated in this View.
9499     *
9500     * <p>The standard implementation populates the menu with a subset of Select All, Cut, Copy,
9501     * Paste, Replace and Share actions, depending on what this View supports.
9502     *
9503     * <p>A custom implementation can add new entries in the default menu in its
9504     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, android.view.Menu)}
9505     * method. The default actions can also be removed from the menu using
9506     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9507     * {@link android.R.id#cut}, {@link android.R.id#copy}, {@link android.R.id#paste},
9508     * {@link android.R.id#replaceText} or {@link android.R.id#shareText} ids as parameters.
9509     *
9510     * <p>Returning false from
9511     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, android.view.Menu)}
9512     * will prevent the action mode from being started.
9513     *
9514     * <p>Action click events should be handled by the custom implementation of
9515     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode,
9516     * android.view.MenuItem)}.
9517     *
9518     * <p>Note that text selection mode is not started when a TextView receives focus and the
9519     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
9520     * that case, to allow for quick replacement.
9521     */
9522    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
9523        createEditorIfNeeded();
9524        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
9525    }
9526
9527    /**
9528     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
9529     *
9530     * @return The current custom selection callback.
9531     */
9532    public ActionMode.Callback getCustomSelectionActionModeCallback() {
9533        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
9534    }
9535
9536    /**
9537     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9538     * insertion is initiated in this View.
9539     * The standard implementation populates the menu with a subset of Select All,
9540     * Paste and Replace actions, depending on what this View supports.
9541     *
9542     * <p>A custom implementation can add new entries in the default menu in its
9543     * {@link android.view.ActionMode.Callback#onPrepareActionMode(android.view.ActionMode,
9544     * android.view.Menu)} method. The default actions can also be removed from the menu using
9545     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9546     * {@link android.R.id#paste} or {@link android.R.id#replaceText} ids as parameters.</p>
9547     *
9548     * <p>Returning false from
9549     * {@link android.view.ActionMode.Callback#onCreateActionMode(android.view.ActionMode,
9550     * android.view.Menu)} will prevent the action mode from being started.</p>
9551     *
9552     * <p>Action click events should be handled by the custom implementation of
9553     * {@link android.view.ActionMode.Callback#onActionItemClicked(android.view.ActionMode,
9554     * android.view.MenuItem)}.</p>
9555     *
9556     * <p>Note that text insertion mode is not started when a TextView receives focus and the
9557     * {@link android.R.attr#selectAllOnFocus} flag has been set.</p>
9558     */
9559    public void setCustomInsertionActionModeCallback(ActionMode.Callback actionModeCallback) {
9560        createEditorIfNeeded();
9561        mEditor.mCustomInsertionActionModeCallback = actionModeCallback;
9562    }
9563
9564    /**
9565     * Retrieves the value set in {@link #setCustomInsertionActionModeCallback}. Default is null.
9566     *
9567     * @return The current custom insertion callback.
9568     */
9569    public ActionMode.Callback getCustomInsertionActionModeCallback() {
9570        return mEditor == null ? null : mEditor.mCustomInsertionActionModeCallback;
9571    }
9572
9573    /**
9574     * @hide
9575     */
9576    protected void stopTextActionMode() {
9577        if (mEditor != null) {
9578            mEditor.stopTextActionMode();
9579        }
9580    }
9581
9582    boolean canUndo() {
9583        return mEditor != null && mEditor.canUndo();
9584    }
9585
9586    boolean canRedo() {
9587        return mEditor != null && mEditor.canRedo();
9588    }
9589
9590    boolean canCut() {
9591        if (hasPasswordTransformationMethod()) {
9592            return false;
9593        }
9594
9595        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
9596                mEditor.mKeyListener != null) {
9597            return true;
9598        }
9599
9600        return false;
9601    }
9602
9603    boolean canCopy() {
9604        if (hasPasswordTransformationMethod()) {
9605            return false;
9606        }
9607
9608        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9609            return true;
9610        }
9611
9612        return false;
9613    }
9614
9615    boolean canShare() {
9616        return canCopy();
9617    }
9618
9619    boolean canPaste() {
9620        return (mText instanceof Editable &&
9621                mEditor != null && mEditor.mKeyListener != null &&
9622                getSelectionStart() >= 0 &&
9623                getSelectionEnd() >= 0 &&
9624                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
9625                hasPrimaryClip());
9626    }
9627
9628    boolean canProcessText() {
9629        if (!getContext().canStartActivityForResult() || getId() == View.NO_ID
9630                || hasPasswordTransformationMethod()) {
9631            return false;
9632        }
9633
9634        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9635            return true;
9636        }
9637
9638        return false;
9639    }
9640
9641    boolean canSelectAllText() {
9642        return canSelectText() && !hasPasswordTransformationMethod()
9643                && !(getSelectionStart() == 0 && getSelectionEnd() == mText.length());
9644    }
9645
9646    boolean selectAllText() {
9647        // Need to hide insert point cursor controller before settings selection, otherwise insert
9648        // point cursor controller obtains cursor update event and update cursor with cancelling
9649        // selection.
9650        if (mEditor != null) {
9651            mEditor.hideInsertionPointCursorController();
9652        }
9653        final int length = mText.length();
9654        Selection.setSelection((Spannable) mText, 0, length);
9655        return length > 0;
9656    }
9657
9658    void replaceSelectionWithText(CharSequence text) {
9659        ((Editable) mText).replace(getSelectionStart(), getSelectionEnd(), text);
9660    }
9661
9662    /**
9663     * Paste clipboard content between min and max positions.
9664     */
9665    private void paste(int min, int max, boolean withFormatting) {
9666        ClipboardManager clipboard =
9667            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
9668        ClipData clip = clipboard.getPrimaryClip();
9669        if (clip != null) {
9670            boolean didFirst = false;
9671            for (int i=0; i<clip.getItemCount(); i++) {
9672                final CharSequence paste;
9673                if (withFormatting) {
9674                    paste = clip.getItemAt(i).coerceToStyledText(getContext());
9675                } else {
9676                    // Get an item as text and remove all spans by toString().
9677                    final CharSequence text = clip.getItemAt(i).coerceToText(getContext());
9678                    paste = (text instanceof Spanned) ? text.toString() : text;
9679                }
9680                if (paste != null) {
9681                    if (!didFirst) {
9682                        Selection.setSelection((Spannable) mText, max);
9683                        ((Editable) mText).replace(min, max, paste);
9684                        didFirst = true;
9685                    } else {
9686                        ((Editable) mText).insert(getSelectionEnd(), "\n");
9687                        ((Editable) mText).insert(getSelectionEnd(), paste);
9688                    }
9689                }
9690            }
9691            stopTextActionMode();
9692            sLastCutCopyOrTextChangedTime = 0;
9693        }
9694    }
9695
9696    private void shareSelectedText() {
9697        String selectedText = getSelectedText();
9698        if (selectedText != null && !selectedText.isEmpty()) {
9699            Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
9700            sharingIntent.setType("text/plain");
9701            sharingIntent.removeExtra(android.content.Intent.EXTRA_TEXT);
9702            sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, selectedText);
9703            getContext().startActivity(Intent.createChooser(sharingIntent, null));
9704            stopTextActionMode();
9705        }
9706    }
9707
9708    private void setPrimaryClip(ClipData clip) {
9709        ClipboardManager clipboard = (ClipboardManager) getContext().
9710                getSystemService(Context.CLIPBOARD_SERVICE);
9711        clipboard.setPrimaryClip(clip);
9712        sLastCutCopyOrTextChangedTime = SystemClock.uptimeMillis();
9713    }
9714
9715    /**
9716     * Get the character offset closest to the specified absolute position. A typical use case is to
9717     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
9718     *
9719     * @param x The horizontal absolute position of a point on screen
9720     * @param y The vertical absolute position of a point on screen
9721     * @return the character offset for the character whose position is closest to the specified
9722     *  position. Returns -1 if there is no layout.
9723     */
9724    public int getOffsetForPosition(float x, float y) {
9725        if (getLayout() == null) return -1;
9726        final int line = getLineAtCoordinate(y);
9727        final int offset = getOffsetAtCoordinate(line, x);
9728        return offset;
9729    }
9730
9731    float convertToLocalHorizontalCoordinate(float x) {
9732        x -= getTotalPaddingLeft();
9733        // Clamp the position to inside of the view.
9734        x = Math.max(0.0f, x);
9735        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
9736        x += getScrollX();
9737        return x;
9738    }
9739
9740    int getLineAtCoordinate(float y) {
9741        y -= getTotalPaddingTop();
9742        // Clamp the position to inside of the view.
9743        y = Math.max(0.0f, y);
9744        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
9745        y += getScrollY();
9746        return getLayout().getLineForVertical((int) y);
9747    }
9748
9749    int getLineAtCoordinateUnclamped(float y) {
9750        y -= getTotalPaddingTop();
9751        y += getScrollY();
9752        return getLayout().getLineForVertical((int) y);
9753    }
9754
9755    int getOffsetAtCoordinate(int line, float x) {
9756        x = convertToLocalHorizontalCoordinate(x);
9757        return getLayout().getOffsetForHorizontal(line, x);
9758    }
9759
9760    @Override
9761    public boolean onDragEvent(DragEvent event) {
9762        switch (event.getAction()) {
9763            case DragEvent.ACTION_DRAG_STARTED:
9764                return mEditor != null && mEditor.hasInsertionController();
9765
9766            case DragEvent.ACTION_DRAG_ENTERED:
9767                TextView.this.requestFocus();
9768                return true;
9769
9770            case DragEvent.ACTION_DRAG_LOCATION:
9771                final int offset = getOffsetForPosition(event.getX(), event.getY());
9772                Selection.setSelection((Spannable)mText, offset);
9773                return true;
9774
9775            case DragEvent.ACTION_DROP:
9776                if (mEditor != null) mEditor.onDrop(event);
9777                return true;
9778
9779            case DragEvent.ACTION_DRAG_ENDED:
9780            case DragEvent.ACTION_DRAG_EXITED:
9781            default:
9782                return true;
9783        }
9784    }
9785
9786    boolean isInBatchEditMode() {
9787        if (mEditor == null) return false;
9788        final Editor.InputMethodState ims = mEditor.mInputMethodState;
9789        if (ims != null) {
9790            return ims.mBatchEditNesting > 0;
9791        }
9792        return mEditor.mInBatchEditControllers;
9793    }
9794
9795    @Override
9796    public void onRtlPropertiesChanged(int layoutDirection) {
9797        super.onRtlPropertiesChanged(layoutDirection);
9798
9799        final TextDirectionHeuristic newTextDir = getTextDirectionHeuristic();
9800        if (mTextDir != newTextDir) {
9801            mTextDir = newTextDir;
9802            if (mLayout != null) {
9803                checkForRelayout();
9804            }
9805        }
9806    }
9807
9808    /**
9809     * @hide
9810     */
9811    protected TextDirectionHeuristic getTextDirectionHeuristic() {
9812        if (hasPasswordTransformationMethod()) {
9813            // passwords fields should be LTR
9814            return TextDirectionHeuristics.LTR;
9815        }
9816
9817        // Always need to resolve layout direction first
9818        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
9819
9820        // Now, we can select the heuristic
9821        switch (getTextDirection()) {
9822            default:
9823            case TEXT_DIRECTION_FIRST_STRONG:
9824                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
9825                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
9826            case TEXT_DIRECTION_ANY_RTL:
9827                return TextDirectionHeuristics.ANYRTL_LTR;
9828            case TEXT_DIRECTION_LTR:
9829                return TextDirectionHeuristics.LTR;
9830            case TEXT_DIRECTION_RTL:
9831                return TextDirectionHeuristics.RTL;
9832            case TEXT_DIRECTION_LOCALE:
9833                return TextDirectionHeuristics.LOCALE;
9834            case TEXT_DIRECTION_FIRST_STRONG_LTR:
9835                return TextDirectionHeuristics.FIRSTSTRONG_LTR;
9836            case TEXT_DIRECTION_FIRST_STRONG_RTL:
9837                return TextDirectionHeuristics.FIRSTSTRONG_RTL;
9838        }
9839    }
9840
9841    /**
9842     * @hide
9843     */
9844    @Override
9845    public void onResolveDrawables(int layoutDirection) {
9846        // No need to resolve twice
9847        if (mLastLayoutDirection == layoutDirection) {
9848            return;
9849        }
9850        mLastLayoutDirection = layoutDirection;
9851
9852        // Resolve drawables
9853        if (mDrawables != null) {
9854            if (mDrawables.resolveWithLayoutDirection(layoutDirection)) {
9855                prepareDrawableForDisplay(mDrawables.mShowing[Drawables.LEFT]);
9856                prepareDrawableForDisplay(mDrawables.mShowing[Drawables.RIGHT]);
9857                applyCompoundDrawableTint();
9858            }
9859        }
9860    }
9861
9862    /**
9863     * Prepares a drawable for display by propagating layout direction and
9864     * drawable state.
9865     *
9866     * @param dr the drawable to prepare
9867     */
9868    private void prepareDrawableForDisplay(@Nullable Drawable dr) {
9869        if (dr == null) {
9870            return;
9871        }
9872
9873        dr.setLayoutDirection(getLayoutDirection());
9874
9875        if (dr.isStateful()) {
9876            dr.setState(getDrawableState());
9877            dr.jumpToCurrentState();
9878        }
9879    }
9880
9881    /**
9882     * @hide
9883     */
9884    protected void resetResolvedDrawables() {
9885        super.resetResolvedDrawables();
9886        mLastLayoutDirection = -1;
9887    }
9888
9889    /**
9890     * @hide
9891     */
9892    protected void viewClicked(InputMethodManager imm) {
9893        if (imm != null) {
9894            imm.viewClicked(this);
9895        }
9896    }
9897
9898    /**
9899     * Deletes the range of text [start, end[.
9900     * @hide
9901     */
9902    protected void deleteText_internal(int start, int end) {
9903        ((Editable) mText).delete(start, end);
9904    }
9905
9906    /**
9907     * Replaces the range of text [start, end[ by replacement text
9908     * @hide
9909     */
9910    protected void replaceText_internal(int start, int end, CharSequence text) {
9911        ((Editable) mText).replace(start, end, text);
9912    }
9913
9914    /**
9915     * Sets a span on the specified range of text
9916     * @hide
9917     */
9918    protected void setSpan_internal(Object span, int start, int end, int flags) {
9919        ((Editable) mText).setSpan(span, start, end, flags);
9920    }
9921
9922    /**
9923     * Moves the cursor to the specified offset position in text
9924     * @hide
9925     */
9926    protected void setCursorPosition_internal(int start, int end) {
9927        Selection.setSelection(((Editable) mText), start, end);
9928    }
9929
9930    /**
9931     * An Editor should be created as soon as any of the editable-specific fields (grouped
9932     * inside the Editor object) is assigned to a non-default value.
9933     * This method will create the Editor if needed.
9934     *
9935     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
9936     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
9937     * Editor for backward compatibility, as soon as one of these fields is assigned.
9938     *
9939     * Also note that for performance reasons, the mEditor is created when needed, but not
9940     * reset when no more edit-specific fields are needed.
9941     */
9942    private void createEditorIfNeeded() {
9943        if (mEditor == null) {
9944            mEditor = new Editor(this);
9945        }
9946    }
9947
9948    /**
9949     * @hide
9950     */
9951    @Override
9952    public CharSequence getIterableTextForAccessibility() {
9953        return mText;
9954    }
9955
9956    private void ensureIterableTextForAccessibilitySelectable() {
9957        if (!(mText instanceof Spannable)) {
9958            setText(mText, BufferType.SPANNABLE);
9959        }
9960    }
9961
9962    /**
9963     * @hide
9964     */
9965    @Override
9966    public TextSegmentIterator getIteratorForGranularity(int granularity) {
9967        switch (granularity) {
9968            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
9969                Spannable text = (Spannable) getIterableTextForAccessibility();
9970                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9971                    AccessibilityIterators.LineTextSegmentIterator iterator =
9972                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
9973                    iterator.initialize(text, getLayout());
9974                    return iterator;
9975                }
9976            } break;
9977            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
9978                Spannable text = (Spannable) getIterableTextForAccessibility();
9979                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9980                    AccessibilityIterators.PageTextSegmentIterator iterator =
9981                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
9982                    iterator.initialize(this);
9983                    return iterator;
9984                }
9985            } break;
9986        }
9987        return super.getIteratorForGranularity(granularity);
9988    }
9989
9990    /**
9991     * @hide
9992     */
9993    @Override
9994    public int getAccessibilitySelectionStart() {
9995        return getSelectionStart();
9996    }
9997
9998    /**
9999     * @hide
10000     */
10001    public boolean isAccessibilitySelectionExtendable() {
10002        return true;
10003    }
10004
10005    /**
10006     * @hide
10007     */
10008    @Override
10009    public int getAccessibilitySelectionEnd() {
10010        return getSelectionEnd();
10011    }
10012
10013    /**
10014     * @hide
10015     */
10016    @Override
10017    public void setAccessibilitySelection(int start, int end) {
10018        if (getAccessibilitySelectionStart() == start
10019                && getAccessibilitySelectionEnd() == end) {
10020            return;
10021        }
10022        // Hide all selection controllers used for adjusting selection
10023        // since we are doing so explicitlty by other means and these
10024        // controllers interact with how selection behaves.
10025        if (mEditor != null) {
10026            mEditor.hideCursorAndSpanControllers();
10027            mEditor.stopTextActionMode();
10028        }
10029        CharSequence text = getIterableTextForAccessibility();
10030        if (Math.min(start, end) >= 0 && Math.max(start, end) <= text.length()) {
10031            Selection.setSelection((Spannable) text, start, end);
10032        } else {
10033            Selection.removeSelection((Spannable) text);
10034        }
10035    }
10036
10037    /** @hide */
10038    @Override
10039    protected void encodeProperties(@NonNull ViewHierarchyEncoder stream) {
10040        super.encodeProperties(stream);
10041
10042        TruncateAt ellipsize = getEllipsize();
10043        stream.addProperty("text:ellipsize", ellipsize == null ? null : ellipsize.name());
10044        stream.addProperty("text:textSize", getTextSize());
10045        stream.addProperty("text:scaledTextSize", getScaledTextSize());
10046        stream.addProperty("text:typefaceStyle", getTypefaceStyle());
10047        stream.addProperty("text:selectionStart", getSelectionStart());
10048        stream.addProperty("text:selectionEnd", getSelectionEnd());
10049        stream.addProperty("text:curTextColor", mCurTextColor);
10050        stream.addProperty("text:text", mText == null ? null : mText.toString());
10051        stream.addProperty("text:gravity", mGravity);
10052    }
10053
10054    /**
10055     * User interface state that is stored by TextView for implementing
10056     * {@link View#onSaveInstanceState}.
10057     */
10058    public static class SavedState extends BaseSavedState {
10059        int selStart;
10060        int selEnd;
10061        CharSequence text;
10062        boolean frozenWithFocus;
10063        CharSequence error;
10064        ParcelableParcel editorState;  // Optional state from Editor.
10065
10066        SavedState(Parcelable superState) {
10067            super(superState);
10068        }
10069
10070        @Override
10071        public void writeToParcel(Parcel out, int flags) {
10072            super.writeToParcel(out, flags);
10073            out.writeInt(selStart);
10074            out.writeInt(selEnd);
10075            out.writeInt(frozenWithFocus ? 1 : 0);
10076            TextUtils.writeToParcel(text, out, flags);
10077
10078            if (error == null) {
10079                out.writeInt(0);
10080            } else {
10081                out.writeInt(1);
10082                TextUtils.writeToParcel(error, out, flags);
10083            }
10084
10085            if (editorState == null) {
10086                out.writeInt(0);
10087            } else {
10088                out.writeInt(1);
10089                editorState.writeToParcel(out, flags);
10090            }
10091        }
10092
10093        @Override
10094        public String toString() {
10095            String str = "TextView.SavedState{"
10096                    + Integer.toHexString(System.identityHashCode(this))
10097                    + " start=" + selStart + " end=" + selEnd;
10098            if (text != null) {
10099                str += " text=" + text;
10100            }
10101            return str + "}";
10102        }
10103
10104        @SuppressWarnings("hiding")
10105        public static final Parcelable.Creator<SavedState> CREATOR
10106                = new Parcelable.Creator<SavedState>() {
10107            public SavedState createFromParcel(Parcel in) {
10108                return new SavedState(in);
10109            }
10110
10111            public SavedState[] newArray(int size) {
10112                return new SavedState[size];
10113            }
10114        };
10115
10116        private SavedState(Parcel in) {
10117            super(in);
10118            selStart = in.readInt();
10119            selEnd = in.readInt();
10120            frozenWithFocus = (in.readInt() != 0);
10121            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
10122
10123            if (in.readInt() != 0) {
10124                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
10125            }
10126
10127            if (in.readInt() != 0) {
10128                editorState = ParcelableParcel.CREATOR.createFromParcel(in);
10129            }
10130        }
10131    }
10132
10133    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
10134        private char[] mChars;
10135        private int mStart, mLength;
10136
10137        public CharWrapper(char[] chars, int start, int len) {
10138            mChars = chars;
10139            mStart = start;
10140            mLength = len;
10141        }
10142
10143        /* package */ void set(char[] chars, int start, int len) {
10144            mChars = chars;
10145            mStart = start;
10146            mLength = len;
10147        }
10148
10149        public int length() {
10150            return mLength;
10151        }
10152
10153        public char charAt(int off) {
10154            return mChars[off + mStart];
10155        }
10156
10157        @Override
10158        public String toString() {
10159            return new String(mChars, mStart, mLength);
10160        }
10161
10162        public CharSequence subSequence(int start, int end) {
10163            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10164                throw new IndexOutOfBoundsException(start + ", " + end);
10165            }
10166
10167            return new String(mChars, start + mStart, end - start);
10168        }
10169
10170        public void getChars(int start, int end, char[] buf, int off) {
10171            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10172                throw new IndexOutOfBoundsException(start + ", " + end);
10173            }
10174
10175            System.arraycopy(mChars, start + mStart, buf, off, end - start);
10176        }
10177
10178        public void drawText(Canvas c, int start, int end,
10179                             float x, float y, Paint p) {
10180            c.drawText(mChars, start + mStart, end - start, x, y, p);
10181        }
10182
10183        public void drawTextRun(Canvas c, int start, int end,
10184                int contextStart, int contextEnd, float x, float y, boolean isRtl, Paint p) {
10185            int count = end - start;
10186            int contextCount = contextEnd - contextStart;
10187            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
10188                    contextCount, x, y, isRtl, p);
10189        }
10190
10191        public float measureText(int start, int end, Paint p) {
10192            return p.measureText(mChars, start + mStart, end - start);
10193        }
10194
10195        public int getTextWidths(int start, int end, float[] widths, Paint p) {
10196            return p.getTextWidths(mChars, start + mStart, end - start, widths);
10197        }
10198
10199        public float getTextRunAdvances(int start, int end, int contextStart,
10200                int contextEnd, boolean isRtl, float[] advances, int advancesIndex,
10201                Paint p) {
10202            int count = end - start;
10203            int contextCount = contextEnd - contextStart;
10204            return p.getTextRunAdvances(mChars, start + mStart, count,
10205                    contextStart + mStart, contextCount, isRtl, advances,
10206                    advancesIndex);
10207        }
10208
10209        public int getTextRunCursor(int contextStart, int contextEnd, int dir,
10210                int offset, int cursorOpt, Paint p) {
10211            int contextCount = contextEnd - contextStart;
10212            return p.getTextRunCursor(mChars, contextStart + mStart,
10213                    contextCount, dir, offset + mStart, cursorOpt);
10214        }
10215    }
10216
10217    private static final class Marquee {
10218        // TODO: Add an option to configure this
10219        private static final float MARQUEE_DELTA_MAX = 0.07f;
10220        private static final int MARQUEE_DELAY = 1200;
10221        private static final int MARQUEE_DP_PER_SECOND = 30;
10222
10223        private static final byte MARQUEE_STOPPED = 0x0;
10224        private static final byte MARQUEE_STARTING = 0x1;
10225        private static final byte MARQUEE_RUNNING = 0x2;
10226
10227        private final WeakReference<TextView> mView;
10228        private final Choreographer mChoreographer;
10229
10230        private byte mStatus = MARQUEE_STOPPED;
10231        private final float mPixelsPerSecond;
10232        private float mMaxScroll;
10233        private float mMaxFadeScroll;
10234        private float mGhostStart;
10235        private float mGhostOffset;
10236        private float mFadeStop;
10237        private int mRepeatLimit;
10238
10239        private float mScroll;
10240        private long mLastAnimationMs;
10241
10242        Marquee(TextView v) {
10243            final float density = v.getContext().getResources().getDisplayMetrics().density;
10244            mPixelsPerSecond = MARQUEE_DP_PER_SECOND * density;
10245            mView = new WeakReference<TextView>(v);
10246            mChoreographer = Choreographer.getInstance();
10247        }
10248
10249        private Choreographer.FrameCallback mTickCallback = new Choreographer.FrameCallback() {
10250            @Override
10251            public void doFrame(long frameTimeNanos) {
10252                tick();
10253            }
10254        };
10255
10256        private Choreographer.FrameCallback mStartCallback = new Choreographer.FrameCallback() {
10257            @Override
10258            public void doFrame(long frameTimeNanos) {
10259                mStatus = MARQUEE_RUNNING;
10260                mLastAnimationMs = mChoreographer.getFrameTime();
10261                tick();
10262            }
10263        };
10264
10265        private Choreographer.FrameCallback mRestartCallback = new Choreographer.FrameCallback() {
10266            @Override
10267            public void doFrame(long frameTimeNanos) {
10268                if (mStatus == MARQUEE_RUNNING) {
10269                    if (mRepeatLimit >= 0) {
10270                        mRepeatLimit--;
10271                    }
10272                    start(mRepeatLimit);
10273                }
10274            }
10275        };
10276
10277        void tick() {
10278            if (mStatus != MARQUEE_RUNNING) {
10279                return;
10280            }
10281
10282            mChoreographer.removeFrameCallback(mTickCallback);
10283
10284            final TextView textView = mView.get();
10285            if (textView != null && (textView.isFocused() || textView.isSelected())) {
10286                long currentMs = mChoreographer.getFrameTime();
10287                long deltaMs = currentMs - mLastAnimationMs;
10288                mLastAnimationMs = currentMs;
10289                float deltaPx = deltaMs / 1000f * mPixelsPerSecond;
10290                mScroll += deltaPx;
10291                if (mScroll > mMaxScroll) {
10292                    mScroll = mMaxScroll;
10293                    mChoreographer.postFrameCallbackDelayed(mRestartCallback, MARQUEE_DELAY);
10294                } else {
10295                    mChoreographer.postFrameCallback(mTickCallback);
10296                }
10297                textView.invalidate();
10298            }
10299        }
10300
10301        void stop() {
10302            mStatus = MARQUEE_STOPPED;
10303            mChoreographer.removeFrameCallback(mStartCallback);
10304            mChoreographer.removeFrameCallback(mRestartCallback);
10305            mChoreographer.removeFrameCallback(mTickCallback);
10306            resetScroll();
10307        }
10308
10309        private void resetScroll() {
10310            mScroll = 0.0f;
10311            final TextView textView = mView.get();
10312            if (textView != null) textView.invalidate();
10313        }
10314
10315        void start(int repeatLimit) {
10316            if (repeatLimit == 0) {
10317                stop();
10318                return;
10319            }
10320            mRepeatLimit = repeatLimit;
10321            final TextView textView = mView.get();
10322            if (textView != null && textView.mLayout != null) {
10323                mStatus = MARQUEE_STARTING;
10324                mScroll = 0.0f;
10325                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
10326                        textView.getCompoundPaddingRight();
10327                final float lineWidth = textView.mLayout.getLineWidth(0);
10328                final float gap = textWidth / 3.0f;
10329                mGhostStart = lineWidth - textWidth + gap;
10330                mMaxScroll = mGhostStart + textWidth;
10331                mGhostOffset = lineWidth + gap;
10332                mFadeStop = lineWidth + textWidth / 6.0f;
10333                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
10334
10335                textView.invalidate();
10336                mChoreographer.postFrameCallback(mStartCallback);
10337            }
10338        }
10339
10340        float getGhostOffset() {
10341            return mGhostOffset;
10342        }
10343
10344        float getScroll() {
10345            return mScroll;
10346        }
10347
10348        float getMaxFadeScroll() {
10349            return mMaxFadeScroll;
10350        }
10351
10352        boolean shouldDrawLeftFade() {
10353            return mScroll <= mFadeStop;
10354        }
10355
10356        boolean shouldDrawGhost() {
10357            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
10358        }
10359
10360        boolean isRunning() {
10361            return mStatus == MARQUEE_RUNNING;
10362        }
10363
10364        boolean isStopped() {
10365            return mStatus == MARQUEE_STOPPED;
10366        }
10367    }
10368
10369    private class ChangeWatcher implements TextWatcher, SpanWatcher {
10370
10371        private CharSequence mBeforeText;
10372
10373        public void beforeTextChanged(CharSequence buffer, int start,
10374                                      int before, int after) {
10375            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
10376                    + " before=" + before + " after=" + after + ": " + buffer);
10377
10378            if (AccessibilityManager.getInstance(mContext).isEnabled()
10379                    && ((!isPasswordInputType(getInputType()) && !hasPasswordTransformationMethod())
10380                            || shouldSpeakPasswordsForAccessibility())) {
10381                mBeforeText = buffer.toString();
10382            }
10383
10384            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
10385        }
10386
10387        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
10388            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
10389                    + " before=" + before + " after=" + after + ": " + buffer);
10390            TextView.this.handleTextChanged(buffer, start, before, after);
10391
10392            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
10393                    (isFocused() || isSelected() && isShown())) {
10394                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
10395                mBeforeText = null;
10396            }
10397        }
10398
10399        public void afterTextChanged(Editable buffer) {
10400            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
10401            TextView.this.sendAfterTextChanged(buffer);
10402
10403            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
10404                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
10405            }
10406        }
10407
10408        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
10409            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
10410                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
10411            TextView.this.spanChange(buf, what, s, st, e, en);
10412        }
10413
10414        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
10415            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
10416                    + " what=" + what + ": " + buf);
10417            TextView.this.spanChange(buf, what, -1, s, -1, e);
10418        }
10419
10420        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
10421            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
10422                    + " what=" + what + ": " + buf);
10423            TextView.this.spanChange(buf, what, s, -1, e, -1);
10424        }
10425    }
10426}
10427