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;
20
21import android.R;
22import android.annotation.ColorInt;
23import android.annotation.DrawableRes;
24import android.annotation.FloatRange;
25import android.annotation.NonNull;
26import android.annotation.Nullable;
27import android.annotation.Size;
28import android.annotation.StringRes;
29import android.annotation.StyleRes;
30import android.annotation.XmlRes;
31import android.app.Activity;
32import android.app.assist.AssistStructure;
33import android.content.ClipData;
34import android.content.ClipboardManager;
35import android.content.Context;
36import android.content.Intent;
37import android.content.UndoManager;
38import android.content.res.ColorStateList;
39import android.content.res.CompatibilityInfo;
40import android.content.res.Configuration;
41import android.content.res.Resources;
42import android.content.res.TypedArray;
43import android.content.res.XmlResourceParser;
44import android.graphics.Canvas;
45import android.graphics.Insets;
46import android.graphics.Paint;
47import android.graphics.Path;
48import android.graphics.PorterDuff;
49import android.graphics.Rect;
50import android.graphics.RectF;
51import android.graphics.Typeface;
52import android.graphics.drawable.Drawable;
53import android.os.AsyncTask;
54import android.os.Bundle;
55import android.os.LocaleList;
56import android.os.Parcel;
57import android.os.Parcelable;
58import android.os.ParcelableParcel;
59import android.os.SystemClock;
60import android.os.UserHandle;
61import android.provider.Settings;
62import android.text.BoringLayout;
63import android.text.DynamicLayout;
64import android.text.Editable;
65import android.text.GetChars;
66import android.text.GraphicsOperations;
67import android.text.InputFilter;
68import android.text.InputType;
69import android.text.Layout;
70import android.text.ParcelableSpan;
71import android.text.Selection;
72import android.text.SpanWatcher;
73import android.text.Spannable;
74import android.text.SpannableString;
75import android.text.SpannableStringBuilder;
76import android.text.Spanned;
77import android.text.SpannedString;
78import android.text.StaticLayout;
79import android.text.TextDirectionHeuristic;
80import android.text.TextDirectionHeuristics;
81import android.text.TextPaint;
82import android.text.TextUtils;
83import android.text.TextUtils.TruncateAt;
84import android.text.TextWatcher;
85import android.text.method.AllCapsTransformationMethod;
86import android.text.method.ArrowKeyMovementMethod;
87import android.text.method.DateKeyListener;
88import android.text.method.DateTimeKeyListener;
89import android.text.method.DialerKeyListener;
90import android.text.method.DigitsKeyListener;
91import android.text.method.KeyListener;
92import android.text.method.LinkMovementMethod;
93import android.text.method.MetaKeyKeyListener;
94import android.text.method.MovementMethod;
95import android.text.method.PasswordTransformationMethod;
96import android.text.method.SingleLineTransformationMethod;
97import android.text.method.TextKeyListener;
98import android.text.method.TimeKeyListener;
99import android.text.method.TransformationMethod;
100import android.text.method.TransformationMethod2;
101import android.text.method.WordIterator;
102import android.text.style.CharacterStyle;
103import android.text.style.ClickableSpan;
104import android.text.style.ParagraphStyle;
105import android.text.style.SpellCheckSpan;
106import android.text.style.SuggestionSpan;
107import android.text.style.URLSpan;
108import android.text.style.UpdateAppearance;
109import android.text.util.Linkify;
110import android.util.AttributeSet;
111import android.util.Log;
112import android.util.TypedValue;
113import android.view.AccessibilityIterators.TextSegmentIterator;
114import android.view.ActionMode;
115import android.view.Choreographer;
116import android.view.ContextMenu;
117import android.view.DragEvent;
118import android.view.Gravity;
119import android.view.HapticFeedbackConstants;
120import android.view.KeyCharacterMap;
121import android.view.KeyEvent;
122import android.view.MotionEvent;
123import android.view.PointerIcon;
124import android.view.View;
125import android.view.ViewConfiguration;
126import android.view.ViewDebug;
127import android.view.ViewGroup.LayoutParams;
128import android.view.ViewHierarchyEncoder;
129import android.view.ViewParent;
130import android.view.ViewRootImpl;
131import android.view.ViewStructure;
132import android.view.ViewTreeObserver;
133import android.view.accessibility.AccessibilityEvent;
134import android.view.accessibility.AccessibilityManager;
135import android.view.accessibility.AccessibilityNodeInfo;
136import android.view.animation.AnimationUtils;
137import android.view.inputmethod.BaseInputConnection;
138import android.view.inputmethod.CompletionInfo;
139import android.view.inputmethod.CorrectionInfo;
140import android.view.inputmethod.EditorInfo;
141import android.view.inputmethod.ExtractedText;
142import android.view.inputmethod.ExtractedTextRequest;
143import android.view.inputmethod.InputConnection;
144import android.view.inputmethod.InputMethodManager;
145import android.view.textservice.SpellCheckerSubtype;
146import android.view.textservice.TextServicesManager;
147import android.widget.RemoteViews.RemoteView;
148
149import com.android.internal.annotations.VisibleForTesting;
150import com.android.internal.util.FastMath;
151import com.android.internal.widget.EditableInputConnection;
152
153import org.xmlpull.v1.XmlPullParserException;
154
155import java.io.IOException;
156import java.lang.ref.WeakReference;
157import java.util.ArrayList;
158import java.util.Locale;
159
160/**
161 * Displays text to the user and optionally allows them to edit it.  A TextView
162 * is a complete text editor, however the basic class is configured to not
163 * allow editing; see {@link EditText} for a subclass that configures the text
164 * view for editing.
165 *
166 * <p>
167 * To allow users to copy some or all of the TextView's value and paste it somewhere else, set the
168 * XML attribute {@link android.R.styleable#TextView_textIsSelectable
169 * android:textIsSelectable} to "true" or call
170 * {@link #setTextIsSelectable setTextIsSelectable(true)}. The {@code textIsSelectable} flag
171 * allows users to make selection gestures in the TextView, which in turn triggers the system's
172 * built-in copy/paste controls.
173 * <p>
174 * <b>XML attributes</b>
175 * <p>
176 * See {@link android.R.styleable#TextView TextView Attributes},
177 * {@link android.R.styleable#View View Attributes}
178 *
179 * @attr ref android.R.styleable#TextView_text
180 * @attr ref android.R.styleable#TextView_bufferType
181 * @attr ref android.R.styleable#TextView_hint
182 * @attr ref android.R.styleable#TextView_textColor
183 * @attr ref android.R.styleable#TextView_textColorHighlight
184 * @attr ref android.R.styleable#TextView_textColorHint
185 * @attr ref android.R.styleable#TextView_textAppearance
186 * @attr ref android.R.styleable#TextView_textColorLink
187 * @attr ref android.R.styleable#TextView_textSize
188 * @attr ref android.R.styleable#TextView_textScaleX
189 * @attr ref android.R.styleable#TextView_fontFamily
190 * @attr ref android.R.styleable#TextView_typeface
191 * @attr ref android.R.styleable#TextView_textStyle
192 * @attr ref android.R.styleable#TextView_cursorVisible
193 * @attr ref android.R.styleable#TextView_maxLines
194 * @attr ref android.R.styleable#TextView_maxHeight
195 * @attr ref android.R.styleable#TextView_lines
196 * @attr ref android.R.styleable#TextView_height
197 * @attr ref android.R.styleable#TextView_minLines
198 * @attr ref android.R.styleable#TextView_minHeight
199 * @attr ref android.R.styleable#TextView_maxEms
200 * @attr ref android.R.styleable#TextView_maxWidth
201 * @attr ref android.R.styleable#TextView_ems
202 * @attr ref android.R.styleable#TextView_width
203 * @attr ref android.R.styleable#TextView_minEms
204 * @attr ref android.R.styleable#TextView_minWidth
205 * @attr ref android.R.styleable#TextView_gravity
206 * @attr ref android.R.styleable#TextView_scrollHorizontally
207 * @attr ref android.R.styleable#TextView_password
208 * @attr ref android.R.styleable#TextView_singleLine
209 * @attr ref android.R.styleable#TextView_selectAllOnFocus
210 * @attr ref android.R.styleable#TextView_includeFontPadding
211 * @attr ref android.R.styleable#TextView_maxLength
212 * @attr ref android.R.styleable#TextView_shadowColor
213 * @attr ref android.R.styleable#TextView_shadowDx
214 * @attr ref android.R.styleable#TextView_shadowDy
215 * @attr ref android.R.styleable#TextView_shadowRadius
216 * @attr ref android.R.styleable#TextView_autoLink
217 * @attr ref android.R.styleable#TextView_linksClickable
218 * @attr ref android.R.styleable#TextView_numeric
219 * @attr ref android.R.styleable#TextView_digits
220 * @attr ref android.R.styleable#TextView_phoneNumber
221 * @attr ref android.R.styleable#TextView_inputMethod
222 * @attr ref android.R.styleable#TextView_capitalize
223 * @attr ref android.R.styleable#TextView_autoText
224 * @attr ref android.R.styleable#TextView_editable
225 * @attr ref android.R.styleable#TextView_freezesText
226 * @attr ref android.R.styleable#TextView_ellipsize
227 * @attr ref android.R.styleable#TextView_drawableTop
228 * @attr ref android.R.styleable#TextView_drawableBottom
229 * @attr ref android.R.styleable#TextView_drawableRight
230 * @attr ref android.R.styleable#TextView_drawableLeft
231 * @attr ref android.R.styleable#TextView_drawableStart
232 * @attr ref android.R.styleable#TextView_drawableEnd
233 * @attr ref android.R.styleable#TextView_drawablePadding
234 * @attr ref android.R.styleable#TextView_drawableTint
235 * @attr ref android.R.styleable#TextView_drawableTintMode
236 * @attr ref android.R.styleable#TextView_lineSpacingExtra
237 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
238 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
239 * @attr ref android.R.styleable#TextView_inputType
240 * @attr ref android.R.styleable#TextView_imeOptions
241 * @attr ref android.R.styleable#TextView_privateImeOptions
242 * @attr ref android.R.styleable#TextView_imeActionLabel
243 * @attr ref android.R.styleable#TextView_imeActionId
244 * @attr ref android.R.styleable#TextView_editorExtras
245 * @attr ref android.R.styleable#TextView_elegantTextHeight
246 * @attr ref android.R.styleable#TextView_letterSpacing
247 * @attr ref android.R.styleable#TextView_fontFeatureSettings
248 * @attr ref android.R.styleable#TextView_breakStrategy
249 * @attr ref android.R.styleable#TextView_hyphenationFrequency
250 */
251@RemoteView
252public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
253    static final String LOG_TAG = "TextView";
254    static final boolean DEBUG_EXTRACT = false;
255
256    // Enum for the "typeface" XML parameter.
257    // TODO: How can we get this from the XML instead of hardcoding it here?
258    private static final int SANS = 1;
259    private static final int SERIF = 2;
260    private static final int MONOSPACE = 3;
261
262    // Bitfield for the "numeric" XML parameter.
263    // TODO: How can we get this from the XML instead of hardcoding it here?
264    private static final int SIGNED = 2;
265    private static final int DECIMAL = 4;
266
267    /**
268     * Draw marquee text with fading edges as usual
269     */
270    private static final int MARQUEE_FADE_NORMAL = 0;
271
272    /**
273     * Draw marquee text as ellipsize end while inactive instead of with the fade.
274     * (Useful for devices where the fade can be expensive if overdone)
275     */
276    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
277
278    /**
279     * Draw marquee text with fading edges because it is currently active/animating.
280     */
281    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
282
283    private static final int LINES = 1;
284    private static final int EMS = LINES;
285    private static final int PIXELS = 2;
286
287    private static final RectF TEMP_RECTF = new RectF();
288
289    /** @hide */
290    static final int VERY_WIDE = 1024 * 1024; // XXX should be much larger
291    private static final int ANIMATED_SCROLL_GAP = 250;
292
293    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
294    private static final Spanned EMPTY_SPANNED = new SpannedString("");
295
296    private static final int CHANGE_WATCHER_PRIORITY = 100;
297
298    // New state used to change background based on whether this TextView is multiline.
299    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
300
301    // Accessibility action to share selected text.
302    private static final int ACCESSIBILITY_ACTION_SHARE = 0x10000000;
303
304    /**
305     * @hide
306     */
307    // Accessibility action start id for "process text" actions.
308    static final int ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID = 0x10000100;
309
310    /**
311     * @hide
312     */
313    static final int PROCESS_TEXT_REQUEST_CODE = 100;
314
315    /**
316     *  Return code of {@link #doKeyDown}.
317     */
318    private static final int KEY_EVENT_NOT_HANDLED = 0;
319    private static final int KEY_EVENT_HANDLED = -1;
320    private static final int KEY_DOWN_HANDLED_BY_KEY_LISTENER = 1;
321    private static final int KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD = 2;
322
323    // System wide time for last cut, copy or text changed action.
324    static long sLastCutCopyOrTextChangedTime;
325
326    private ColorStateList mTextColor;
327    private ColorStateList mHintTextColor;
328    private ColorStateList mLinkTextColor;
329    @ViewDebug.ExportedProperty(category = "text")
330    private int mCurTextColor;
331    private int mCurHintTextColor;
332    private boolean mFreezesText;
333
334    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
335    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
336
337    private float mShadowRadius, mShadowDx, mShadowDy;
338    private int mShadowColor;
339
340    private boolean mPreDrawRegistered;
341    private boolean mPreDrawListenerDetached;
342
343    // A flag to prevent repeated movements from escaping the enclosing text view. The idea here is
344    // that if a user is holding down a movement key to traverse text, we shouldn't also traverse
345    // the view hierarchy. On the other hand, if the user is using the movement key to traverse views
346    // (i.e. the first movement was to traverse out of this view, or this view was traversed into by
347    // the user holding the movement key down) then we shouldn't prevent the focus from changing.
348    private boolean mPreventDefaultMovement;
349
350    private TextUtils.TruncateAt mEllipsize;
351
352    static class Drawables {
353        static final int LEFT = 0;
354        static final int TOP = 1;
355        static final int RIGHT = 2;
356        static final int BOTTOM = 3;
357
358        static final int DRAWABLE_NONE = -1;
359        static final int DRAWABLE_RIGHT = 0;
360        static final int DRAWABLE_LEFT = 1;
361
362        final Rect mCompoundRect = new Rect();
363
364        final Drawable[] mShowing = new Drawable[4];
365
366        ColorStateList mTintList;
367        PorterDuff.Mode mTintMode;
368        boolean mHasTint;
369        boolean mHasTintMode;
370
371        Drawable mDrawableStart, mDrawableEnd, mDrawableError, mDrawableTemp;
372        Drawable mDrawableLeftInitial, mDrawableRightInitial;
373
374        boolean mIsRtlCompatibilityMode;
375        boolean mOverride;
376
377        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
378                mDrawableSizeStart, mDrawableSizeEnd, mDrawableSizeError, mDrawableSizeTemp;
379
380        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
381                mDrawableHeightStart, mDrawableHeightEnd, mDrawableHeightError, mDrawableHeightTemp;
382
383        int mDrawablePadding;
384
385        int mDrawableSaved = DRAWABLE_NONE;
386
387        public Drawables(Context context) {
388            final int targetSdkVersion = context.getApplicationInfo().targetSdkVersion;
389            mIsRtlCompatibilityMode = (targetSdkVersion < JELLY_BEAN_MR1 ||
390                !context.getApplicationInfo().hasRtlSupport());
391            mOverride = false;
392        }
393
394        /**
395         * @return {@code true} if this object contains metadata that needs to
396         *         be retained, {@code false} otherwise
397         */
398        public boolean hasMetadata() {
399            return mDrawablePadding != 0 || mHasTintMode || mHasTint;
400        }
401
402        /**
403         * Updates the list of displayed drawables to account for the current
404         * layout direction.
405         *
406         * @param layoutDirection the current layout direction
407         * @return {@code true} if the displayed drawables changed
408         */
409        public boolean resolveWithLayoutDirection(int layoutDirection) {
410            final Drawable previousLeft = mShowing[Drawables.LEFT];
411            final Drawable previousRight = mShowing[Drawables.RIGHT];
412
413            // First reset "left" and "right" drawables to their initial values
414            mShowing[Drawables.LEFT] = mDrawableLeftInitial;
415            mShowing[Drawables.RIGHT] = mDrawableRightInitial;
416
417            if (mIsRtlCompatibilityMode) {
418                // Use "start" drawable as "left" drawable if the "left" drawable was not defined
419                if (mDrawableStart != null && mShowing[Drawables.LEFT] == null) {
420                    mShowing[Drawables.LEFT] = mDrawableStart;
421                    mDrawableSizeLeft = mDrawableSizeStart;
422                    mDrawableHeightLeft = mDrawableHeightStart;
423                }
424                // Use "end" drawable as "right" drawable if the "right" drawable was not defined
425                if (mDrawableEnd != null && mShowing[Drawables.RIGHT] == null) {
426                    mShowing[Drawables.RIGHT] = mDrawableEnd;
427                    mDrawableSizeRight = mDrawableSizeEnd;
428                    mDrawableHeightRight = mDrawableHeightEnd;
429                }
430            } else {
431                // JB-MR1+ normal case: "start" / "end" drawables are overriding "left" / "right"
432                // drawable if and only if they have been defined
433                switch(layoutDirection) {
434                    case LAYOUT_DIRECTION_RTL:
435                        if (mOverride) {
436                            mShowing[Drawables.RIGHT] = mDrawableStart;
437                            mDrawableSizeRight = mDrawableSizeStart;
438                            mDrawableHeightRight = mDrawableHeightStart;
439
440                            mShowing[Drawables.LEFT] = mDrawableEnd;
441                            mDrawableSizeLeft = mDrawableSizeEnd;
442                            mDrawableHeightLeft = mDrawableHeightEnd;
443                        }
444                        break;
445
446                    case LAYOUT_DIRECTION_LTR:
447                    default:
448                        if (mOverride) {
449                            mShowing[Drawables.LEFT] = mDrawableStart;
450                            mDrawableSizeLeft = mDrawableSizeStart;
451                            mDrawableHeightLeft = mDrawableHeightStart;
452
453                            mShowing[Drawables.RIGHT] = mDrawableEnd;
454                            mDrawableSizeRight = mDrawableSizeEnd;
455                            mDrawableHeightRight = mDrawableHeightEnd;
456                        }
457                        break;
458                }
459            }
460
461            applyErrorDrawableIfNeeded(layoutDirection);
462
463            return mShowing[Drawables.LEFT] != previousLeft
464                    || mShowing[Drawables.RIGHT] != previousRight;
465        }
466
467        public void setErrorDrawable(Drawable dr, TextView tv) {
468            if (mDrawableError != dr && mDrawableError != null) {
469                mDrawableError.setCallback(null);
470            }
471            mDrawableError = dr;
472
473            if (mDrawableError != null) {
474                final Rect compoundRect = mCompoundRect;
475                final int[] state = tv.getDrawableState();
476
477                mDrawableError.setState(state);
478                mDrawableError.copyBounds(compoundRect);
479                mDrawableError.setCallback(tv);
480                mDrawableSizeError = compoundRect.width();
481                mDrawableHeightError = compoundRect.height();
482            } else {
483                mDrawableSizeError = mDrawableHeightError = 0;
484            }
485        }
486
487        private void applyErrorDrawableIfNeeded(int layoutDirection) {
488            // first restore the initial state if needed
489            switch (mDrawableSaved) {
490                case DRAWABLE_LEFT:
491                    mShowing[Drawables.LEFT] = mDrawableTemp;
492                    mDrawableSizeLeft = mDrawableSizeTemp;
493                    mDrawableHeightLeft = mDrawableHeightTemp;
494                    break;
495                case DRAWABLE_RIGHT:
496                    mShowing[Drawables.RIGHT] = mDrawableTemp;
497                    mDrawableSizeRight = mDrawableSizeTemp;
498                    mDrawableHeightRight = mDrawableHeightTemp;
499                    break;
500                case DRAWABLE_NONE:
501                default:
502            }
503            // then, if needed, assign the Error drawable to the correct location
504            if (mDrawableError != null) {
505                switch(layoutDirection) {
506                    case LAYOUT_DIRECTION_RTL:
507                        mDrawableSaved = DRAWABLE_LEFT;
508
509                        mDrawableTemp = mShowing[Drawables.LEFT];
510                        mDrawableSizeTemp = mDrawableSizeLeft;
511                        mDrawableHeightTemp = mDrawableHeightLeft;
512
513                        mShowing[Drawables.LEFT] = mDrawableError;
514                        mDrawableSizeLeft = mDrawableSizeError;
515                        mDrawableHeightLeft = mDrawableHeightError;
516                        break;
517                    case LAYOUT_DIRECTION_LTR:
518                    default:
519                        mDrawableSaved = DRAWABLE_RIGHT;
520
521                        mDrawableTemp = mShowing[Drawables.RIGHT];
522                        mDrawableSizeTemp = mDrawableSizeRight;
523                        mDrawableHeightTemp = mDrawableHeightRight;
524
525                        mShowing[Drawables.RIGHT] = mDrawableError;
526                        mDrawableSizeRight = mDrawableSizeError;
527                        mDrawableHeightRight = mDrawableHeightError;
528                        break;
529                }
530            }
531        }
532    }
533
534    Drawables mDrawables;
535
536    private CharWrapper mCharWrapper;
537
538    private Marquee mMarquee;
539    private boolean mRestartMarquee;
540
541    private int mMarqueeRepeatLimit = 3;
542
543    private int mLastLayoutDirection = -1;
544
545    /**
546     * On some devices the fading edges add a performance penalty if used
547     * extensively in the same layout. This mode indicates how the marquee
548     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
549     */
550    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
551
552    /**
553     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
554     * the layout that should be used when the mode switches.
555     */
556    private Layout mSavedMarqueeModeLayout;
557
558    @ViewDebug.ExportedProperty(category = "text")
559    private CharSequence mText;
560    private CharSequence mTransformed;
561    private BufferType mBufferType = BufferType.NORMAL;
562
563    private CharSequence mHint;
564    private Layout mHintLayout;
565
566    private MovementMethod mMovement;
567
568    private TransformationMethod mTransformation;
569    private boolean mAllowTransformationLengthChange;
570    private ChangeWatcher mChangeWatcher;
571
572    private ArrayList<TextWatcher> mListeners;
573
574    // display attributes
575    private final TextPaint mTextPaint;
576    private boolean mUserSetTextScaleX;
577    private Layout mLayout;
578    private boolean mLocalesChanged = false;
579
580    @ViewDebug.ExportedProperty(category = "text")
581    private int mGravity = Gravity.TOP | Gravity.START;
582    private boolean mHorizontallyScrolling;
583
584    private int mAutoLinkMask;
585    private boolean mLinksClickable = true;
586
587    private float mSpacingMult = 1.0f;
588    private float mSpacingAdd = 0.0f;
589
590    private int mBreakStrategy;
591    private int mHyphenationFrequency;
592
593    private int mMaximum = Integer.MAX_VALUE;
594    private int mMaxMode = LINES;
595    private int mMinimum = 0;
596    private int mMinMode = LINES;
597
598    private int mOldMaximum = mMaximum;
599    private int mOldMaxMode = mMaxMode;
600
601    private int mMaxWidth = Integer.MAX_VALUE;
602    private int mMaxWidthMode = PIXELS;
603    private int mMinWidth = 0;
604    private int mMinWidthMode = PIXELS;
605
606    private boolean mSingleLine;
607    private int mDesiredHeightAtMeasure = -1;
608    private boolean mIncludePad = true;
609    private int mDeferScroll = -1;
610
611    // tmp primitives, so we don't alloc them on each draw
612    private Rect mTempRect;
613    private long mLastScroll;
614    private Scroller mScroller;
615
616    private BoringLayout.Metrics mBoring, mHintBoring;
617    private BoringLayout mSavedLayout, mSavedHintLayout;
618
619    private TextDirectionHeuristic mTextDir;
620
621    private InputFilter[] mFilters = NO_FILTERS;
622
623    private volatile Locale mCurrentSpellCheckerLocaleCache;
624
625    // It is possible to have a selection even when mEditor is null (programmatically set, like when
626    // a link is pressed). These highlight-related fields do not go in mEditor.
627    int mHighlightColor = 0x6633B5E5;
628    private Path mHighlightPath;
629    private final Paint mHighlightPaint;
630    private boolean mHighlightPathBogus = true;
631
632    // Although these fields are specific to editable text, they are not added to Editor because
633    // they are defined by the TextView's style and are theme-dependent.
634    int mCursorDrawableRes;
635    // These six fields, could be moved to Editor, since we know their default values and we
636    // could condition the creation of the Editor to a non standard value. This is however
637    // brittle since the hardcoded values here (such as
638    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
639    // default style is modified.
640    int mTextSelectHandleLeftRes;
641    int mTextSelectHandleRightRes;
642    int mTextSelectHandleRes;
643    int mTextEditSuggestionItemLayout;
644    int mTextEditSuggestionContainerLayout;
645    int mTextEditSuggestionHighlightStyle;
646
647    /**
648     * EditText specific data, created on demand when one of the Editor fields is used.
649     * See {@link #createEditorIfNeeded()}.
650     */
651    private Editor mEditor;
652
653    private static final int DEVICE_PROVISIONED_UNKNOWN = 0;
654    private static final int DEVICE_PROVISIONED_NO = 1;
655    private static final int DEVICE_PROVISIONED_YES = 2;
656
657    /**
658     * Some special options such as sharing selected text should only be shown if the device
659     * is provisioned. Only check the provisioned state once for a given view instance.
660     */
661    private int mDeviceProvisionedState = DEVICE_PROVISIONED_UNKNOWN;
662
663    /**
664     * Kick-start the font cache for the zygote process (to pay the cost of
665     * initializing freetype for our default font only once).
666     * @hide
667     */
668    public static void preloadFontCache() {
669        Paint p = new Paint();
670        p.setAntiAlias(true);
671        // We don't care about the result, just the side-effect of measuring.
672        p.measureText("H");
673    }
674
675    /**
676     * Interface definition for a callback to be invoked when an action is
677     * performed on the editor.
678     */
679    public interface OnEditorActionListener {
680        /**
681         * Called when an action is being performed.
682         *
683         * @param v The view that was clicked.
684         * @param actionId Identifier of the action.  This will be either the
685         * identifier you supplied, or {@link EditorInfo#IME_NULL
686         * EditorInfo.IME_NULL} if being called due to the enter key
687         * being pressed.
688         * @param event If triggered by an enter key, this is the event;
689         * otherwise, this is null.
690         * @return Return true if you have consumed the action, else false.
691         */
692        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
693    }
694
695    public TextView(Context context) {
696        this(context, null);
697    }
698
699    public TextView(Context context, @Nullable AttributeSet attrs) {
700        this(context, attrs, com.android.internal.R.attr.textViewStyle);
701    }
702
703    public TextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
704        this(context, attrs, defStyleAttr, 0);
705    }
706
707    @SuppressWarnings("deprecation")
708    public TextView(
709            Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
710        super(context, attrs, defStyleAttr, defStyleRes);
711
712        mText = "";
713
714        final Resources res = getResources();
715        final CompatibilityInfo compat = res.getCompatibilityInfo();
716
717        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
718        mTextPaint.density = res.getDisplayMetrics().density;
719        mTextPaint.setCompatibilityScaling(compat.applicationScale);
720
721        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
722        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
723
724        mMovement = getDefaultMovementMethod();
725
726        mTransformation = null;
727
728        int textColorHighlight = 0;
729        ColorStateList textColor = null;
730        ColorStateList textColorHint = null;
731        ColorStateList textColorLink = null;
732        int textSize = 15;
733        String fontFamily = null;
734        boolean fontFamilyExplicit = false;
735        int typefaceIndex = -1;
736        int styleIndex = -1;
737        boolean allCaps = false;
738        int shadowcolor = 0;
739        float dx = 0, dy = 0, r = 0;
740        boolean elegant = false;
741        float letterSpacing = 0;
742        String fontFeatureSettings = null;
743        mBreakStrategy = Layout.BREAK_STRATEGY_SIMPLE;
744        mHyphenationFrequency = Layout.HYPHENATION_FREQUENCY_NONE;
745
746        final Resources.Theme theme = context.getTheme();
747
748        /*
749         * Look the appearance up without checking first if it exists because
750         * almost every TextView has one and it greatly simplifies the logic
751         * to be able to parse the appearance first and then let specific tags
752         * for this View override it.
753         */
754        TypedArray a = theme.obtainStyledAttributes(attrs,
755                com.android.internal.R.styleable.TextViewAppearance, defStyleAttr, defStyleRes);
756        TypedArray appearance = null;
757        int ap = a.getResourceId(
758                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
759        a.recycle();
760        if (ap != -1) {
761            appearance = theme.obtainStyledAttributes(
762                    ap, com.android.internal.R.styleable.TextAppearance);
763        }
764        if (appearance != null) {
765            int n = appearance.getIndexCount();
766            for (int i = 0; i < n; i++) {
767                int attr = appearance.getIndex(i);
768
769                switch (attr) {
770                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
771                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
772                    break;
773
774                case com.android.internal.R.styleable.TextAppearance_textColor:
775                    textColor = appearance.getColorStateList(attr);
776                    break;
777
778                case com.android.internal.R.styleable.TextAppearance_textColorHint:
779                    textColorHint = appearance.getColorStateList(attr);
780                    break;
781
782                case com.android.internal.R.styleable.TextAppearance_textColorLink:
783                    textColorLink = appearance.getColorStateList(attr);
784                    break;
785
786                case com.android.internal.R.styleable.TextAppearance_textSize:
787                    textSize = appearance.getDimensionPixelSize(attr, textSize);
788                    break;
789
790                case com.android.internal.R.styleable.TextAppearance_typeface:
791                    typefaceIndex = appearance.getInt(attr, -1);
792                    break;
793
794                case com.android.internal.R.styleable.TextAppearance_fontFamily:
795                    fontFamily = appearance.getString(attr);
796                    break;
797
798                case com.android.internal.R.styleable.TextAppearance_textStyle:
799                    styleIndex = appearance.getInt(attr, -1);
800                    break;
801
802                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
803                    allCaps = appearance.getBoolean(attr, false);
804                    break;
805
806                case com.android.internal.R.styleable.TextAppearance_shadowColor:
807                    shadowcolor = appearance.getInt(attr, 0);
808                    break;
809
810                case com.android.internal.R.styleable.TextAppearance_shadowDx:
811                    dx = appearance.getFloat(attr, 0);
812                    break;
813
814                case com.android.internal.R.styleable.TextAppearance_shadowDy:
815                    dy = appearance.getFloat(attr, 0);
816                    break;
817
818                case com.android.internal.R.styleable.TextAppearance_shadowRadius:
819                    r = appearance.getFloat(attr, 0);
820                    break;
821
822                case com.android.internal.R.styleable.TextAppearance_elegantTextHeight:
823                    elegant = appearance.getBoolean(attr, false);
824                    break;
825
826                case com.android.internal.R.styleable.TextAppearance_letterSpacing:
827                    letterSpacing = appearance.getFloat(attr, 0);
828                    break;
829
830                case com.android.internal.R.styleable.TextAppearance_fontFeatureSettings:
831                    fontFeatureSettings = appearance.getString(attr);
832                    break;
833                }
834            }
835
836            appearance.recycle();
837        }
838
839        boolean editable = getDefaultEditable();
840        CharSequence inputMethod = null;
841        int numeric = 0;
842        CharSequence digits = null;
843        boolean phone = false;
844        boolean autotext = false;
845        int autocap = -1;
846        int buffertype = 0;
847        boolean selectallonfocus = false;
848        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
849            drawableBottom = null, drawableStart = null, drawableEnd = null;
850        ColorStateList drawableTint = null;
851        PorterDuff.Mode drawableTintMode = null;
852        int drawablePadding = 0;
853        int ellipsize = -1;
854        boolean singleLine = false;
855        int maxlength = -1;
856        CharSequence text = "";
857        CharSequence hint = null;
858        boolean password = false;
859        int inputType = EditorInfo.TYPE_NULL;
860
861        a = theme.obtainStyledAttributes(
862                    attrs, com.android.internal.R.styleable.TextView, defStyleAttr, defStyleRes);
863
864        int n = a.getIndexCount();
865        for (int i = 0; i < n; i++) {
866            int attr = a.getIndex(i);
867
868            switch (attr) {
869            case com.android.internal.R.styleable.TextView_editable:
870                editable = a.getBoolean(attr, editable);
871                break;
872
873            case com.android.internal.R.styleable.TextView_inputMethod:
874                inputMethod = a.getText(attr);
875                break;
876
877            case com.android.internal.R.styleable.TextView_numeric:
878                numeric = a.getInt(attr, numeric);
879                break;
880
881            case com.android.internal.R.styleable.TextView_digits:
882                digits = a.getText(attr);
883                break;
884
885            case com.android.internal.R.styleable.TextView_phoneNumber:
886                phone = a.getBoolean(attr, phone);
887                break;
888
889            case com.android.internal.R.styleable.TextView_autoText:
890                autotext = a.getBoolean(attr, autotext);
891                break;
892
893            case com.android.internal.R.styleable.TextView_capitalize:
894                autocap = a.getInt(attr, autocap);
895                break;
896
897            case com.android.internal.R.styleable.TextView_bufferType:
898                buffertype = a.getInt(attr, buffertype);
899                break;
900
901            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
902                selectallonfocus = a.getBoolean(attr, selectallonfocus);
903                break;
904
905            case com.android.internal.R.styleable.TextView_autoLink:
906                mAutoLinkMask = a.getInt(attr, 0);
907                break;
908
909            case com.android.internal.R.styleable.TextView_linksClickable:
910                mLinksClickable = a.getBoolean(attr, true);
911                break;
912
913            case com.android.internal.R.styleable.TextView_drawableLeft:
914                drawableLeft = a.getDrawable(attr);
915                break;
916
917            case com.android.internal.R.styleable.TextView_drawableTop:
918                drawableTop = a.getDrawable(attr);
919                break;
920
921            case com.android.internal.R.styleable.TextView_drawableRight:
922                drawableRight = a.getDrawable(attr);
923                break;
924
925            case com.android.internal.R.styleable.TextView_drawableBottom:
926                drawableBottom = a.getDrawable(attr);
927                break;
928
929            case com.android.internal.R.styleable.TextView_drawableStart:
930                drawableStart = a.getDrawable(attr);
931                break;
932
933            case com.android.internal.R.styleable.TextView_drawableEnd:
934                drawableEnd = a.getDrawable(attr);
935                break;
936
937            case com.android.internal.R.styleable.TextView_drawableTint:
938                drawableTint = a.getColorStateList(attr);
939                break;
940
941            case com.android.internal.R.styleable.TextView_drawableTintMode:
942                drawableTintMode = Drawable.parseTintMode(a.getInt(attr, -1), drawableTintMode);
943                break;
944
945            case com.android.internal.R.styleable.TextView_drawablePadding:
946                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
947                break;
948
949            case com.android.internal.R.styleable.TextView_maxLines:
950                setMaxLines(a.getInt(attr, -1));
951                break;
952
953            case com.android.internal.R.styleable.TextView_maxHeight:
954                setMaxHeight(a.getDimensionPixelSize(attr, -1));
955                break;
956
957            case com.android.internal.R.styleable.TextView_lines:
958                setLines(a.getInt(attr, -1));
959                break;
960
961            case com.android.internal.R.styleable.TextView_height:
962                setHeight(a.getDimensionPixelSize(attr, -1));
963                break;
964
965            case com.android.internal.R.styleable.TextView_minLines:
966                setMinLines(a.getInt(attr, -1));
967                break;
968
969            case com.android.internal.R.styleable.TextView_minHeight:
970                setMinHeight(a.getDimensionPixelSize(attr, -1));
971                break;
972
973            case com.android.internal.R.styleable.TextView_maxEms:
974                setMaxEms(a.getInt(attr, -1));
975                break;
976
977            case com.android.internal.R.styleable.TextView_maxWidth:
978                setMaxWidth(a.getDimensionPixelSize(attr, -1));
979                break;
980
981            case com.android.internal.R.styleable.TextView_ems:
982                setEms(a.getInt(attr, -1));
983                break;
984
985            case com.android.internal.R.styleable.TextView_width:
986                setWidth(a.getDimensionPixelSize(attr, -1));
987                break;
988
989            case com.android.internal.R.styleable.TextView_minEms:
990                setMinEms(a.getInt(attr, -1));
991                break;
992
993            case com.android.internal.R.styleable.TextView_minWidth:
994                setMinWidth(a.getDimensionPixelSize(attr, -1));
995                break;
996
997            case com.android.internal.R.styleable.TextView_gravity:
998                setGravity(a.getInt(attr, -1));
999                break;
1000
1001            case com.android.internal.R.styleable.TextView_hint:
1002                hint = a.getText(attr);
1003                break;
1004
1005            case com.android.internal.R.styleable.TextView_text:
1006                text = a.getText(attr);
1007                break;
1008
1009            case com.android.internal.R.styleable.TextView_scrollHorizontally:
1010                if (a.getBoolean(attr, false)) {
1011                    setHorizontallyScrolling(true);
1012                }
1013                break;
1014
1015            case com.android.internal.R.styleable.TextView_singleLine:
1016                singleLine = a.getBoolean(attr, singleLine);
1017                break;
1018
1019            case com.android.internal.R.styleable.TextView_ellipsize:
1020                ellipsize = a.getInt(attr, ellipsize);
1021                break;
1022
1023            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
1024                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
1025                break;
1026
1027            case com.android.internal.R.styleable.TextView_includeFontPadding:
1028                if (!a.getBoolean(attr, true)) {
1029                    setIncludeFontPadding(false);
1030                }
1031                break;
1032
1033            case com.android.internal.R.styleable.TextView_cursorVisible:
1034                if (!a.getBoolean(attr, true)) {
1035                    setCursorVisible(false);
1036                }
1037                break;
1038
1039            case com.android.internal.R.styleable.TextView_maxLength:
1040                maxlength = a.getInt(attr, -1);
1041                break;
1042
1043            case com.android.internal.R.styleable.TextView_textScaleX:
1044                setTextScaleX(a.getFloat(attr, 1.0f));
1045                break;
1046
1047            case com.android.internal.R.styleable.TextView_freezesText:
1048                mFreezesText = a.getBoolean(attr, false);
1049                break;
1050
1051            case com.android.internal.R.styleable.TextView_shadowColor:
1052                shadowcolor = a.getInt(attr, 0);
1053                break;
1054
1055            case com.android.internal.R.styleable.TextView_shadowDx:
1056                dx = a.getFloat(attr, 0);
1057                break;
1058
1059            case com.android.internal.R.styleable.TextView_shadowDy:
1060                dy = a.getFloat(attr, 0);
1061                break;
1062
1063            case com.android.internal.R.styleable.TextView_shadowRadius:
1064                r = a.getFloat(attr, 0);
1065                break;
1066
1067            case com.android.internal.R.styleable.TextView_enabled:
1068                setEnabled(a.getBoolean(attr, isEnabled()));
1069                break;
1070
1071            case com.android.internal.R.styleable.TextView_textColorHighlight:
1072                textColorHighlight = a.getColor(attr, textColorHighlight);
1073                break;
1074
1075            case com.android.internal.R.styleable.TextView_textColor:
1076                textColor = a.getColorStateList(attr);
1077                break;
1078
1079            case com.android.internal.R.styleable.TextView_textColorHint:
1080                textColorHint = a.getColorStateList(attr);
1081                break;
1082
1083            case com.android.internal.R.styleable.TextView_textColorLink:
1084                textColorLink = a.getColorStateList(attr);
1085                break;
1086
1087            case com.android.internal.R.styleable.TextView_textSize:
1088                textSize = a.getDimensionPixelSize(attr, textSize);
1089                break;
1090
1091            case com.android.internal.R.styleable.TextView_typeface:
1092                typefaceIndex = a.getInt(attr, typefaceIndex);
1093                break;
1094
1095            case com.android.internal.R.styleable.TextView_textStyle:
1096                styleIndex = a.getInt(attr, styleIndex);
1097                break;
1098
1099            case com.android.internal.R.styleable.TextView_fontFamily:
1100                fontFamily = a.getString(attr);
1101                fontFamilyExplicit = true;
1102                break;
1103
1104            case com.android.internal.R.styleable.TextView_password:
1105                password = a.getBoolean(attr, password);
1106                break;
1107
1108            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
1109                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
1110                break;
1111
1112            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
1113                mSpacingMult = a.getFloat(attr, mSpacingMult);
1114                break;
1115
1116            case com.android.internal.R.styleable.TextView_inputType:
1117                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
1118                break;
1119
1120            case com.android.internal.R.styleable.TextView_allowUndo:
1121                createEditorIfNeeded();
1122                mEditor.mAllowUndo = a.getBoolean(attr, true);
1123                break;
1124
1125            case com.android.internal.R.styleable.TextView_imeOptions:
1126                createEditorIfNeeded();
1127                mEditor.createInputContentTypeIfNeeded();
1128                mEditor.mInputContentType.imeOptions = a.getInt(attr,
1129                        mEditor.mInputContentType.imeOptions);
1130                break;
1131
1132            case com.android.internal.R.styleable.TextView_imeActionLabel:
1133                createEditorIfNeeded();
1134                mEditor.createInputContentTypeIfNeeded();
1135                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
1136                break;
1137
1138            case com.android.internal.R.styleable.TextView_imeActionId:
1139                createEditorIfNeeded();
1140                mEditor.createInputContentTypeIfNeeded();
1141                mEditor.mInputContentType.imeActionId = a.getInt(attr,
1142                        mEditor.mInputContentType.imeActionId);
1143                break;
1144
1145            case com.android.internal.R.styleable.TextView_privateImeOptions:
1146                setPrivateImeOptions(a.getString(attr));
1147                break;
1148
1149            case com.android.internal.R.styleable.TextView_editorExtras:
1150                try {
1151                    setInputExtras(a.getResourceId(attr, 0));
1152                } catch (XmlPullParserException e) {
1153                    Log.w(LOG_TAG, "Failure reading input extras", e);
1154                } catch (IOException e) {
1155                    Log.w(LOG_TAG, "Failure reading input extras", e);
1156                }
1157                break;
1158
1159            case com.android.internal.R.styleable.TextView_textCursorDrawable:
1160                mCursorDrawableRes = a.getResourceId(attr, 0);
1161                break;
1162
1163            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
1164                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
1165                break;
1166
1167            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
1168                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
1169                break;
1170
1171            case com.android.internal.R.styleable.TextView_textSelectHandle:
1172                mTextSelectHandleRes = a.getResourceId(attr, 0);
1173                break;
1174
1175            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
1176                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
1177                break;
1178
1179            case com.android.internal.R.styleable.TextView_textEditSuggestionContainerLayout:
1180                mTextEditSuggestionContainerLayout = a.getResourceId(attr, 0);
1181                break;
1182
1183            case com.android.internal.R.styleable.TextView_textEditSuggestionHighlightStyle:
1184                mTextEditSuggestionHighlightStyle = a.getResourceId(attr, 0);
1185                break;
1186
1187            case com.android.internal.R.styleable.TextView_textIsSelectable:
1188                setTextIsSelectable(a.getBoolean(attr, false));
1189                break;
1190
1191            case com.android.internal.R.styleable.TextView_textAllCaps:
1192                allCaps = a.getBoolean(attr, false);
1193                break;
1194
1195            case com.android.internal.R.styleable.TextView_elegantTextHeight:
1196                elegant = a.getBoolean(attr, false);
1197                break;
1198
1199            case com.android.internal.R.styleable.TextView_letterSpacing:
1200                letterSpacing = a.getFloat(attr, 0);
1201                break;
1202
1203            case com.android.internal.R.styleable.TextView_fontFeatureSettings:
1204                fontFeatureSettings = a.getString(attr);
1205                break;
1206
1207            case com.android.internal.R.styleable.TextView_breakStrategy:
1208                mBreakStrategy = a.getInt(attr, Layout.BREAK_STRATEGY_SIMPLE);
1209                break;
1210
1211            case com.android.internal.R.styleable.TextView_hyphenationFrequency:
1212                mHyphenationFrequency = a.getInt(attr, Layout.HYPHENATION_FREQUENCY_NONE);
1213                break;
1214            }
1215        }
1216        a.recycle();
1217
1218        BufferType bufferType = BufferType.EDITABLE;
1219
1220        final int variation =
1221                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
1222        final boolean passwordInputType = variation
1223                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
1224        final boolean webPasswordInputType = variation
1225                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
1226        final boolean numberPasswordInputType = variation
1227                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
1228
1229        if (inputMethod != null) {
1230            Class<?> c;
1231
1232            try {
1233                c = Class.forName(inputMethod.toString());
1234            } catch (ClassNotFoundException ex) {
1235                throw new RuntimeException(ex);
1236            }
1237
1238            try {
1239                createEditorIfNeeded();
1240                mEditor.mKeyListener = (KeyListener) c.newInstance();
1241            } catch (InstantiationException ex) {
1242                throw new RuntimeException(ex);
1243            } catch (IllegalAccessException ex) {
1244                throw new RuntimeException(ex);
1245            }
1246            try {
1247                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1248                        ? inputType
1249                        : mEditor.mKeyListener.getInputType();
1250            } catch (IncompatibleClassChangeError e) {
1251                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1252            }
1253        } else if (digits != null) {
1254            createEditorIfNeeded();
1255            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
1256            // If no input type was specified, we will default to generic
1257            // text, since we can't tell the IME about the set of digits
1258            // that was selected.
1259            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1260                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
1261        } else if (inputType != EditorInfo.TYPE_NULL) {
1262            setInputType(inputType, true);
1263            // If set, the input type overrides what was set using the deprecated singleLine flag.
1264            singleLine = !isMultilineInputType(inputType);
1265        } else if (phone) {
1266            createEditorIfNeeded();
1267            mEditor.mKeyListener = DialerKeyListener.getInstance();
1268            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
1269        } else if (numeric != 0) {
1270            createEditorIfNeeded();
1271            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
1272                                                   (numeric & DECIMAL) != 0);
1273            inputType = EditorInfo.TYPE_CLASS_NUMBER;
1274            if ((numeric & SIGNED) != 0) {
1275                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
1276            }
1277            if ((numeric & DECIMAL) != 0) {
1278                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
1279            }
1280            mEditor.mInputType = inputType;
1281        } else if (autotext || autocap != -1) {
1282            TextKeyListener.Capitalize cap;
1283
1284            inputType = EditorInfo.TYPE_CLASS_TEXT;
1285
1286            switch (autocap) {
1287            case 1:
1288                cap = TextKeyListener.Capitalize.SENTENCES;
1289                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
1290                break;
1291
1292            case 2:
1293                cap = TextKeyListener.Capitalize.WORDS;
1294                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
1295                break;
1296
1297            case 3:
1298                cap = TextKeyListener.Capitalize.CHARACTERS;
1299                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
1300                break;
1301
1302            default:
1303                cap = TextKeyListener.Capitalize.NONE;
1304                break;
1305            }
1306
1307            createEditorIfNeeded();
1308            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
1309            mEditor.mInputType = inputType;
1310        } else if (isTextSelectable()) {
1311            // Prevent text changes from keyboard.
1312            if (mEditor != null) {
1313                mEditor.mKeyListener = null;
1314                mEditor.mInputType = EditorInfo.TYPE_NULL;
1315            }
1316            bufferType = BufferType.SPANNABLE;
1317            // So that selection can be changed using arrow keys and touch is handled.
1318            setMovementMethod(ArrowKeyMovementMethod.getInstance());
1319        } else if (editable) {
1320            createEditorIfNeeded();
1321            mEditor.mKeyListener = TextKeyListener.getInstance();
1322            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1323        } else {
1324            if (mEditor != null) mEditor.mKeyListener = null;
1325
1326            switch (buffertype) {
1327                case 0:
1328                    bufferType = BufferType.NORMAL;
1329                    break;
1330                case 1:
1331                    bufferType = BufferType.SPANNABLE;
1332                    break;
1333                case 2:
1334                    bufferType = BufferType.EDITABLE;
1335                    break;
1336            }
1337        }
1338
1339        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
1340                webPasswordInputType, numberPasswordInputType);
1341
1342        if (selectallonfocus) {
1343            createEditorIfNeeded();
1344            mEditor.mSelectAllOnFocus = true;
1345
1346            if (bufferType == BufferType.NORMAL)
1347                bufferType = BufferType.SPANNABLE;
1348        }
1349
1350        // Set up the tint (if needed) before setting the drawables so that it
1351        // gets applied correctly.
1352        if (drawableTint != null || drawableTintMode != null) {
1353            if (mDrawables == null) {
1354                mDrawables = new Drawables(context);
1355            }
1356            if (drawableTint != null) {
1357                mDrawables.mTintList = drawableTint;
1358                mDrawables.mHasTint = true;
1359            }
1360            if (drawableTintMode != null) {
1361                mDrawables.mTintMode = drawableTintMode;
1362                mDrawables.mHasTintMode = true;
1363            }
1364        }
1365
1366        // This call will save the initial left/right drawables
1367        setCompoundDrawablesWithIntrinsicBounds(
1368            drawableLeft, drawableTop, drawableRight, drawableBottom);
1369        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1370        setCompoundDrawablePadding(drawablePadding);
1371
1372        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1373        // of lines of height are unchanged for multi-line TextViews.
1374        setInputTypeSingleLine(singleLine);
1375        applySingleLine(singleLine, singleLine, singleLine);
1376
1377        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1378                ellipsize = 3; // END
1379        }
1380
1381        switch (ellipsize) {
1382            case 1:
1383                setEllipsize(TextUtils.TruncateAt.START);
1384                break;
1385            case 2:
1386                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1387                break;
1388            case 3:
1389                setEllipsize(TextUtils.TruncateAt.END);
1390                break;
1391            case 4:
1392                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1393                    setHorizontalFadingEdgeEnabled(true);
1394                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1395                } else {
1396                    setHorizontalFadingEdgeEnabled(false);
1397                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1398                }
1399                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1400                break;
1401        }
1402
1403        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1404        setHintTextColor(textColorHint);
1405        setLinkTextColor(textColorLink);
1406        if (textColorHighlight != 0) {
1407            setHighlightColor(textColorHighlight);
1408        }
1409        setRawTextSize(textSize);
1410        setElegantTextHeight(elegant);
1411        setLetterSpacing(letterSpacing);
1412        setFontFeatureSettings(fontFeatureSettings);
1413
1414        if (allCaps) {
1415            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1416        }
1417
1418        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1419            setTransformationMethod(PasswordTransformationMethod.getInstance());
1420            typefaceIndex = MONOSPACE;
1421        } else if (mEditor != null &&
1422                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1423                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1424            typefaceIndex = MONOSPACE;
1425        }
1426
1427        if (typefaceIndex != -1 && !fontFamilyExplicit) {
1428            fontFamily = null;
1429        }
1430        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1431
1432        if (shadowcolor != 0) {
1433            setShadowLayer(r, dx, dy, shadowcolor);
1434        }
1435
1436        if (maxlength >= 0) {
1437            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1438        } else {
1439            setFilters(NO_FILTERS);
1440        }
1441
1442        setText(text, bufferType);
1443        if (hint != null) setHint(hint);
1444
1445        /*
1446         * Views are not normally focusable unless specified to be.
1447         * However, TextViews that have input or movement methods *are*
1448         * focusable by default.
1449         */
1450        a = context.obtainStyledAttributes(
1451                attrs, com.android.internal.R.styleable.View, defStyleAttr, defStyleRes);
1452
1453        boolean focusable = mMovement != null || getKeyListener() != null;
1454        boolean clickable = focusable || isClickable();
1455        boolean longClickable = focusable || isLongClickable();
1456
1457        n = a.getIndexCount();
1458        for (int i = 0; i < n; i++) {
1459            int attr = a.getIndex(i);
1460
1461            switch (attr) {
1462            case com.android.internal.R.styleable.View_focusable:
1463                focusable = a.getBoolean(attr, focusable);
1464                break;
1465
1466            case com.android.internal.R.styleable.View_clickable:
1467                clickable = a.getBoolean(attr, clickable);
1468                break;
1469
1470            case com.android.internal.R.styleable.View_longClickable:
1471                longClickable = a.getBoolean(attr, longClickable);
1472                break;
1473            }
1474        }
1475        a.recycle();
1476
1477        setFocusable(focusable);
1478        setClickable(clickable);
1479        setLongClickable(longClickable);
1480
1481        if (mEditor != null) mEditor.prepareCursorControllers();
1482
1483        // If not explicitly specified this view is important for accessibility.
1484        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1485            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1486        }
1487    }
1488
1489    private int[] parseDimensionArray(TypedArray dimens) {
1490        if (dimens == null) {
1491            return null;
1492        }
1493        int[] result = new int[dimens.length()];
1494        for (int i = 0; i < result.length; i++) {
1495            result[i] = dimens.getDimensionPixelSize(i, 0);
1496        }
1497        return result;
1498    }
1499
1500    /**
1501     * @hide
1502     */
1503    @Override
1504    public void onActivityResult(int requestCode, int resultCode, Intent data) {
1505        if (requestCode == PROCESS_TEXT_REQUEST_CODE) {
1506            if (resultCode == Activity.RESULT_OK && data != null) {
1507                CharSequence result = data.getCharSequenceExtra(Intent.EXTRA_PROCESS_TEXT);
1508                if (result != null) {
1509                    if (isTextEditable()) {
1510                        replaceSelectionWithText(result);
1511                        if (mEditor != null) {
1512                            mEditor.refreshTextActionMode();
1513                        }
1514                    } else {
1515                        if (result.length() > 0) {
1516                            Toast.makeText(getContext(), String.valueOf(result), Toast.LENGTH_LONG)
1517                                .show();
1518                        }
1519                    }
1520                }
1521            } else if (mText instanceof Spannable) {
1522                // Reset the selection.
1523                Selection.setSelection((Spannable) mText, getSelectionEnd());
1524            }
1525        }
1526    }
1527
1528    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1529        Typeface tf = null;
1530        if (familyName != null) {
1531            tf = Typeface.create(familyName, styleIndex);
1532            if (tf != null) {
1533                setTypeface(tf);
1534                return;
1535            }
1536        }
1537        switch (typefaceIndex) {
1538            case SANS:
1539                tf = Typeface.SANS_SERIF;
1540                break;
1541
1542            case SERIF:
1543                tf = Typeface.SERIF;
1544                break;
1545
1546            case MONOSPACE:
1547                tf = Typeface.MONOSPACE;
1548                break;
1549        }
1550
1551        setTypeface(tf, styleIndex);
1552    }
1553
1554    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1555        boolean hasRelativeDrawables = (start != null) || (end != null);
1556        if (hasRelativeDrawables) {
1557            Drawables dr = mDrawables;
1558            if (dr == null) {
1559                mDrawables = dr = new Drawables(getContext());
1560            }
1561            mDrawables.mOverride = true;
1562            final Rect compoundRect = dr.mCompoundRect;
1563            int[] state = getDrawableState();
1564            if (start != null) {
1565                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1566                start.setState(state);
1567                start.copyBounds(compoundRect);
1568                start.setCallback(this);
1569
1570                dr.mDrawableStart = start;
1571                dr.mDrawableSizeStart = compoundRect.width();
1572                dr.mDrawableHeightStart = compoundRect.height();
1573            } else {
1574                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1575            }
1576            if (end != null) {
1577                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1578                end.setState(state);
1579                end.copyBounds(compoundRect);
1580                end.setCallback(this);
1581
1582                dr.mDrawableEnd = end;
1583                dr.mDrawableSizeEnd = compoundRect.width();
1584                dr.mDrawableHeightEnd = compoundRect.height();
1585            } else {
1586                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1587            }
1588            resetResolvedDrawables();
1589            resolveDrawables();
1590            applyCompoundDrawableTint();
1591        }
1592    }
1593
1594    @android.view.RemotableViewMethod
1595    @Override
1596    public void setEnabled(boolean enabled) {
1597        if (enabled == isEnabled()) {
1598            return;
1599        }
1600
1601        if (!enabled) {
1602            // Hide the soft input if the currently active TextView is disabled
1603            InputMethodManager imm = InputMethodManager.peekInstance();
1604            if (imm != null && imm.isActive(this)) {
1605                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1606            }
1607        }
1608
1609        super.setEnabled(enabled);
1610
1611        if (enabled) {
1612            // Make sure IME is updated with current editor info.
1613            InputMethodManager imm = InputMethodManager.peekInstance();
1614            if (imm != null) imm.restartInput(this);
1615        }
1616
1617        // Will change text color
1618        if (mEditor != null) {
1619            mEditor.invalidateTextDisplayList();
1620            mEditor.prepareCursorControllers();
1621
1622            // start or stop the cursor blinking as appropriate
1623            mEditor.makeBlink();
1624        }
1625    }
1626
1627    /**
1628     * Sets the typeface and style in which the text should be displayed,
1629     * and turns on the fake bold and italic bits in the Paint if the
1630     * Typeface that you provided does not have all the bits in the
1631     * style that you specified.
1632     *
1633     * @attr ref android.R.styleable#TextView_typeface
1634     * @attr ref android.R.styleable#TextView_textStyle
1635     */
1636    public void setTypeface(Typeface tf, int style) {
1637        if (style > 0) {
1638            if (tf == null) {
1639                tf = Typeface.defaultFromStyle(style);
1640            } else {
1641                tf = Typeface.create(tf, style);
1642            }
1643
1644            setTypeface(tf);
1645            // now compute what (if any) algorithmic styling is needed
1646            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1647            int need = style & ~typefaceStyle;
1648            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1649            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1650        } else {
1651            mTextPaint.setFakeBoldText(false);
1652            mTextPaint.setTextSkewX(0);
1653            setTypeface(tf);
1654        }
1655    }
1656
1657    /**
1658     * Subclasses override this to specify that they have a KeyListener
1659     * by default even if not specifically called for in the XML options.
1660     */
1661    protected boolean getDefaultEditable() {
1662        return false;
1663    }
1664
1665    /**
1666     * Subclasses override this to specify a default movement method.
1667     */
1668    protected MovementMethod getDefaultMovementMethod() {
1669        return null;
1670    }
1671
1672    /**
1673     * Return the text the TextView is displaying. If setText() was called with
1674     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1675     * the return value from this method to Spannable or Editable, respectively.
1676     *
1677     * Note: The content of the return value should not be modified. If you want
1678     * a modifiable one, you should make your own copy first.
1679     *
1680     * @attr ref android.R.styleable#TextView_text
1681     */
1682    @ViewDebug.CapturedViewProperty
1683    public CharSequence getText() {
1684        return mText;
1685    }
1686
1687    /**
1688     * Returns the length, in characters, of the text managed by this TextView
1689     */
1690    public int length() {
1691        return mText.length();
1692    }
1693
1694    /**
1695     * Return the text the TextView is displaying as an Editable object.  If
1696     * the text is not editable, null is returned.
1697     *
1698     * @see #getText
1699     */
1700    public Editable getEditableText() {
1701        return (mText instanceof Editable) ? (Editable)mText : null;
1702    }
1703
1704    /**
1705     * @return the height of one standard line in pixels.  Note that markup
1706     * within the text can cause individual lines to be taller or shorter
1707     * than this height, and the layout may contain additional first-
1708     * or last-line padding.
1709     */
1710    public int getLineHeight() {
1711        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1712    }
1713
1714    /**
1715     * @return the Layout that is currently being used to display the text.
1716     * This can be null if the text or width has recently changes.
1717     */
1718    public final Layout getLayout() {
1719        return mLayout;
1720    }
1721
1722    /**
1723     * @return the Layout that is currently being used to display the hint text.
1724     * This can be null.
1725     */
1726    final Layout getHintLayout() {
1727        return mHintLayout;
1728    }
1729
1730    /**
1731     * Retrieve the {@link android.content.UndoManager} that is currently associated
1732     * with this TextView.  By default there is no associated UndoManager, so null
1733     * is returned.  One can be associated with the TextView through
1734     * {@link #setUndoManager(android.content.UndoManager, String)}
1735     *
1736     * @hide
1737     */
1738    public final UndoManager getUndoManager() {
1739        // TODO: Consider supporting a global undo manager.
1740        throw new UnsupportedOperationException("not implemented");
1741    }
1742
1743
1744    /**
1745     * @hide
1746     */
1747    @VisibleForTesting
1748    public final Editor getEditorForTesting() {
1749        return mEditor;
1750    }
1751
1752    /**
1753     * Associate an {@link android.content.UndoManager} with this TextView.  Once
1754     * done, all edit operations on the TextView will result in appropriate
1755     * {@link android.content.UndoOperation} objects pushed on the given UndoManager's
1756     * stack.
1757     *
1758     * @param undoManager The {@link android.content.UndoManager} to associate with
1759     * this TextView, or null to clear any existing association.
1760     * @param tag String tag identifying this particular TextView owner in the
1761     * UndoManager.  This is used to keep the correct association with the
1762     * {@link android.content.UndoOwner} of any operations inside of the UndoManager.
1763     *
1764     * @hide
1765     */
1766    public final void setUndoManager(UndoManager undoManager, String tag) {
1767        // TODO: Consider supporting a global undo manager. An implementation will need to:
1768        // * createEditorIfNeeded()
1769        // * Promote to BufferType.EDITABLE if needed.
1770        // * Update the UndoManager and UndoOwner.
1771        // Likewise it will need to be able to restore the default UndoManager.
1772        throw new UnsupportedOperationException("not implemented");
1773    }
1774
1775    /**
1776     * @return the current key listener for this TextView.
1777     * This will frequently be null for non-EditText TextViews.
1778     *
1779     * @attr ref android.R.styleable#TextView_numeric
1780     * @attr ref android.R.styleable#TextView_digits
1781     * @attr ref android.R.styleable#TextView_phoneNumber
1782     * @attr ref android.R.styleable#TextView_inputMethod
1783     * @attr ref android.R.styleable#TextView_capitalize
1784     * @attr ref android.R.styleable#TextView_autoText
1785     */
1786    public final KeyListener getKeyListener() {
1787        return mEditor == null ? null : mEditor.mKeyListener;
1788    }
1789
1790    /**
1791     * Sets the key listener to be used with this TextView.  This can be null
1792     * to disallow user input.  Note that this method has significant and
1793     * subtle interactions with soft keyboards and other input method:
1794     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1795     * for important details.  Calling this method will replace the current
1796     * content type of the text view with the content type returned by the
1797     * key listener.
1798     * <p>
1799     * Be warned that if you want a TextView with a key listener or movement
1800     * method not to be focusable, or if you want a TextView without a
1801     * key listener or movement method to be focusable, you must call
1802     * {@link #setFocusable} again after calling this to get the focusability
1803     * back the way you want it.
1804     *
1805     * @attr ref android.R.styleable#TextView_numeric
1806     * @attr ref android.R.styleable#TextView_digits
1807     * @attr ref android.R.styleable#TextView_phoneNumber
1808     * @attr ref android.R.styleable#TextView_inputMethod
1809     * @attr ref android.R.styleable#TextView_capitalize
1810     * @attr ref android.R.styleable#TextView_autoText
1811     */
1812    public void setKeyListener(KeyListener input) {
1813        setKeyListenerOnly(input);
1814        fixFocusableAndClickableSettings();
1815
1816        if (input != null) {
1817            createEditorIfNeeded();
1818            try {
1819                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1820            } catch (IncompatibleClassChangeError e) {
1821                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1822            }
1823            // Change inputType, without affecting transformation.
1824            // No need to applySingleLine since mSingleLine is unchanged.
1825            setInputTypeSingleLine(mSingleLine);
1826        } else {
1827            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1828        }
1829
1830        InputMethodManager imm = InputMethodManager.peekInstance();
1831        if (imm != null) imm.restartInput(this);
1832    }
1833
1834    private void setKeyListenerOnly(KeyListener input) {
1835        if (mEditor == null && input == null) return; // null is the default value
1836
1837        createEditorIfNeeded();
1838        if (mEditor.mKeyListener != input) {
1839            mEditor.mKeyListener = input;
1840            if (input != null && !(mText instanceof Editable)) {
1841                setText(mText);
1842            }
1843
1844            setFilters((Editable) mText, mFilters);
1845        }
1846    }
1847
1848    /**
1849     * @return the movement method being used for this TextView.
1850     * This will frequently be null for non-EditText TextViews.
1851     */
1852    public final MovementMethod getMovementMethod() {
1853        return mMovement;
1854    }
1855
1856    /**
1857     * Sets the movement method (arrow key handler) to be used for
1858     * this TextView.  This can be null to disallow using the arrow keys
1859     * to move the cursor or scroll the view.
1860     * <p>
1861     * Be warned that if you want a TextView with a key listener or movement
1862     * method not to be focusable, or if you want a TextView without a
1863     * key listener or movement method to be focusable, you must call
1864     * {@link #setFocusable} again after calling this to get the focusability
1865     * back the way you want it.
1866     */
1867    public final void setMovementMethod(MovementMethod movement) {
1868        if (mMovement != movement) {
1869            mMovement = movement;
1870
1871            if (movement != null && !(mText instanceof Spannable)) {
1872                setText(mText);
1873            }
1874
1875            fixFocusableAndClickableSettings();
1876
1877            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1878            // mMovement
1879            if (mEditor != null) mEditor.prepareCursorControllers();
1880        }
1881    }
1882
1883    private void fixFocusableAndClickableSettings() {
1884        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1885            setFocusable(true);
1886            setClickable(true);
1887            setLongClickable(true);
1888        } else {
1889            setFocusable(false);
1890            setClickable(false);
1891            setLongClickable(false);
1892        }
1893    }
1894
1895    /**
1896     * @return the current transformation method for this TextView.
1897     * This will frequently be null except for single-line and password
1898     * fields.
1899     *
1900     * @attr ref android.R.styleable#TextView_password
1901     * @attr ref android.R.styleable#TextView_singleLine
1902     */
1903    public final TransformationMethod getTransformationMethod() {
1904        return mTransformation;
1905    }
1906
1907    /**
1908     * Sets the transformation that is applied to the text that this
1909     * TextView is displaying.
1910     *
1911     * @attr ref android.R.styleable#TextView_password
1912     * @attr ref android.R.styleable#TextView_singleLine
1913     */
1914    public final void setTransformationMethod(TransformationMethod method) {
1915        if (method == mTransformation) {
1916            // Avoid the setText() below if the transformation is
1917            // the same.
1918            return;
1919        }
1920        if (mTransformation != null) {
1921            if (mText instanceof Spannable) {
1922                ((Spannable) mText).removeSpan(mTransformation);
1923            }
1924        }
1925
1926        mTransformation = method;
1927
1928        if (method instanceof TransformationMethod2) {
1929            TransformationMethod2 method2 = (TransformationMethod2) method;
1930            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1931            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1932        } else {
1933            mAllowTransformationLengthChange = false;
1934        }
1935
1936        setText(mText);
1937
1938        if (hasPasswordTransformationMethod()) {
1939            notifyViewAccessibilityStateChangedIfNeeded(
1940                    AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
1941        }
1942
1943        // PasswordTransformationMethod always have LTR text direction heuristics returned by
1944        // getTextDirectionHeuristic, needs reset
1945        mTextDir = getTextDirectionHeuristic();
1946    }
1947
1948    /**
1949     * Returns the top padding of the view, plus space for the top
1950     * Drawable if any.
1951     */
1952    public int getCompoundPaddingTop() {
1953        final Drawables dr = mDrawables;
1954        if (dr == null || dr.mShowing[Drawables.TOP] == null) {
1955            return mPaddingTop;
1956        } else {
1957            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1958        }
1959    }
1960
1961    /**
1962     * Returns the bottom padding of the view, plus space for the bottom
1963     * Drawable if any.
1964     */
1965    public int getCompoundPaddingBottom() {
1966        final Drawables dr = mDrawables;
1967        if (dr == null || dr.mShowing[Drawables.BOTTOM] == null) {
1968            return mPaddingBottom;
1969        } else {
1970            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1971        }
1972    }
1973
1974    /**
1975     * Returns the left padding of the view, plus space for the left
1976     * Drawable if any.
1977     */
1978    public int getCompoundPaddingLeft() {
1979        final Drawables dr = mDrawables;
1980        if (dr == null || dr.mShowing[Drawables.LEFT] == null) {
1981            return mPaddingLeft;
1982        } else {
1983            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1984        }
1985    }
1986
1987    /**
1988     * Returns the right padding of the view, plus space for the right
1989     * Drawable if any.
1990     */
1991    public int getCompoundPaddingRight() {
1992        final Drawables dr = mDrawables;
1993        if (dr == null || dr.mShowing[Drawables.RIGHT] == null) {
1994            return mPaddingRight;
1995        } else {
1996            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1997        }
1998    }
1999
2000    /**
2001     * Returns the start padding of the view, plus space for the start
2002     * Drawable if any.
2003     */
2004    public int getCompoundPaddingStart() {
2005        resolveDrawables();
2006        switch(getLayoutDirection()) {
2007            default:
2008            case LAYOUT_DIRECTION_LTR:
2009                return getCompoundPaddingLeft();
2010            case LAYOUT_DIRECTION_RTL:
2011                return getCompoundPaddingRight();
2012        }
2013    }
2014
2015    /**
2016     * Returns the end padding of the view, plus space for the end
2017     * Drawable if any.
2018     */
2019    public int getCompoundPaddingEnd() {
2020        resolveDrawables();
2021        switch(getLayoutDirection()) {
2022            default:
2023            case LAYOUT_DIRECTION_LTR:
2024                return getCompoundPaddingRight();
2025            case LAYOUT_DIRECTION_RTL:
2026                return getCompoundPaddingLeft();
2027        }
2028    }
2029
2030    /**
2031     * Returns the extended top padding of the view, including both the
2032     * top Drawable if any and any extra space to keep more than maxLines
2033     * of text from showing.  It is only valid to call this after measuring.
2034     */
2035    public int getExtendedPaddingTop() {
2036        if (mMaxMode != LINES) {
2037            return getCompoundPaddingTop();
2038        }
2039
2040        if (mLayout == null) {
2041            assumeLayout();
2042        }
2043
2044        if (mLayout.getLineCount() <= mMaximum) {
2045            return getCompoundPaddingTop();
2046        }
2047
2048        int top = getCompoundPaddingTop();
2049        int bottom = getCompoundPaddingBottom();
2050        int viewht = getHeight() - top - bottom;
2051        int layoutht = mLayout.getLineTop(mMaximum);
2052
2053        if (layoutht >= viewht) {
2054            return top;
2055        }
2056
2057        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2058        if (gravity == Gravity.TOP) {
2059            return top;
2060        } else if (gravity == Gravity.BOTTOM) {
2061            return top + viewht - layoutht;
2062        } else { // (gravity == Gravity.CENTER_VERTICAL)
2063            return top + (viewht - layoutht) / 2;
2064        }
2065    }
2066
2067    /**
2068     * Returns the extended bottom padding of the view, including both the
2069     * bottom Drawable if any and any extra space to keep more than maxLines
2070     * of text from showing.  It is only valid to call this after measuring.
2071     */
2072    public int getExtendedPaddingBottom() {
2073        if (mMaxMode != LINES) {
2074            return getCompoundPaddingBottom();
2075        }
2076
2077        if (mLayout == null) {
2078            assumeLayout();
2079        }
2080
2081        if (mLayout.getLineCount() <= mMaximum) {
2082            return getCompoundPaddingBottom();
2083        }
2084
2085        int top = getCompoundPaddingTop();
2086        int bottom = getCompoundPaddingBottom();
2087        int viewht = getHeight() - top - bottom;
2088        int layoutht = mLayout.getLineTop(mMaximum);
2089
2090        if (layoutht >= viewht) {
2091            return bottom;
2092        }
2093
2094        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2095        if (gravity == Gravity.TOP) {
2096            return bottom + viewht - layoutht;
2097        } else if (gravity == Gravity.BOTTOM) {
2098            return bottom;
2099        } else { // (gravity == Gravity.CENTER_VERTICAL)
2100            return bottom + (viewht - layoutht) / 2;
2101        }
2102    }
2103
2104    /**
2105     * Returns the total left padding of the view, including the left
2106     * Drawable if any.
2107     */
2108    public int getTotalPaddingLeft() {
2109        return getCompoundPaddingLeft();
2110    }
2111
2112    /**
2113     * Returns the total right padding of the view, including the right
2114     * Drawable if any.
2115     */
2116    public int getTotalPaddingRight() {
2117        return getCompoundPaddingRight();
2118    }
2119
2120    /**
2121     * Returns the total start padding of the view, including the start
2122     * Drawable if any.
2123     */
2124    public int getTotalPaddingStart() {
2125        return getCompoundPaddingStart();
2126    }
2127
2128    /**
2129     * Returns the total end padding of the view, including the end
2130     * Drawable if any.
2131     */
2132    public int getTotalPaddingEnd() {
2133        return getCompoundPaddingEnd();
2134    }
2135
2136    /**
2137     * Returns the total top padding of the view, including the top
2138     * Drawable if any, the extra space to keep more than maxLines
2139     * from showing, and the vertical offset for gravity, if any.
2140     */
2141    public int getTotalPaddingTop() {
2142        return getExtendedPaddingTop() + getVerticalOffset(true);
2143    }
2144
2145    /**
2146     * Returns the total bottom padding of the view, including the bottom
2147     * Drawable if any, the extra space to keep more than maxLines
2148     * from showing, and the vertical offset for gravity, if any.
2149     */
2150    public int getTotalPaddingBottom() {
2151        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
2152    }
2153
2154    /**
2155     * Sets the Drawables (if any) to appear to the left of, above, to the
2156     * right of, and below the text. Use {@code null} if you do not want a
2157     * Drawable there. The Drawables must already have had
2158     * {@link Drawable#setBounds} called.
2159     * <p>
2160     * Calling this method will overwrite any Drawables previously set using
2161     * {@link #setCompoundDrawablesRelative} or related methods.
2162     *
2163     * @attr ref android.R.styleable#TextView_drawableLeft
2164     * @attr ref android.R.styleable#TextView_drawableTop
2165     * @attr ref android.R.styleable#TextView_drawableRight
2166     * @attr ref android.R.styleable#TextView_drawableBottom
2167     */
2168    public void setCompoundDrawables(@Nullable Drawable left, @Nullable Drawable top,
2169            @Nullable Drawable right, @Nullable Drawable bottom) {
2170        Drawables dr = mDrawables;
2171
2172        // We're switching to absolute, discard relative.
2173        if (dr != null) {
2174            if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2175            dr.mDrawableStart = null;
2176            if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2177            dr.mDrawableEnd = null;
2178            dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2179            dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2180        }
2181
2182        final boolean drawables = left != null || top != null || right != null || bottom != null;
2183        if (!drawables) {
2184            // Clearing drawables...  can we free the data structure?
2185            if (dr != null) {
2186                if (!dr.hasMetadata()) {
2187                    mDrawables = null;
2188                } else {
2189                    // We need to retain the last set padding, so just clear
2190                    // out all of the fields in the existing structure.
2191                    for (int i = dr.mShowing.length - 1; i >= 0; i--) {
2192                        if (dr.mShowing[i] != null) {
2193                            dr.mShowing[i].setCallback(null);
2194                        }
2195                        dr.mShowing[i] = null;
2196                    }
2197                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2198                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2199                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2200                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2201                }
2202            }
2203        } else {
2204            if (dr == null) {
2205                mDrawables = dr = new Drawables(getContext());
2206            }
2207
2208            mDrawables.mOverride = false;
2209
2210            if (dr.mShowing[Drawables.LEFT] != left && dr.mShowing[Drawables.LEFT] != null) {
2211                dr.mShowing[Drawables.LEFT].setCallback(null);
2212            }
2213            dr.mShowing[Drawables.LEFT] = left;
2214
2215            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2216                dr.mShowing[Drawables.TOP].setCallback(null);
2217            }
2218            dr.mShowing[Drawables.TOP] = top;
2219
2220            if (dr.mShowing[Drawables.RIGHT] != right && dr.mShowing[Drawables.RIGHT] != null) {
2221                dr.mShowing[Drawables.RIGHT].setCallback(null);
2222            }
2223            dr.mShowing[Drawables.RIGHT] = right;
2224
2225            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2226                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2227            }
2228            dr.mShowing[Drawables.BOTTOM] = bottom;
2229
2230            final Rect compoundRect = dr.mCompoundRect;
2231            int[] state;
2232
2233            state = getDrawableState();
2234
2235            if (left != null) {
2236                left.setState(state);
2237                left.copyBounds(compoundRect);
2238                left.setCallback(this);
2239                dr.mDrawableSizeLeft = compoundRect.width();
2240                dr.mDrawableHeightLeft = compoundRect.height();
2241            } else {
2242                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2243            }
2244
2245            if (right != null) {
2246                right.setState(state);
2247                right.copyBounds(compoundRect);
2248                right.setCallback(this);
2249                dr.mDrawableSizeRight = compoundRect.width();
2250                dr.mDrawableHeightRight = compoundRect.height();
2251            } else {
2252                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2253            }
2254
2255            if (top != null) {
2256                top.setState(state);
2257                top.copyBounds(compoundRect);
2258                top.setCallback(this);
2259                dr.mDrawableSizeTop = compoundRect.height();
2260                dr.mDrawableWidthTop = compoundRect.width();
2261            } else {
2262                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2263            }
2264
2265            if (bottom != null) {
2266                bottom.setState(state);
2267                bottom.copyBounds(compoundRect);
2268                bottom.setCallback(this);
2269                dr.mDrawableSizeBottom = compoundRect.height();
2270                dr.mDrawableWidthBottom = compoundRect.width();
2271            } else {
2272                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2273            }
2274        }
2275
2276        // Save initial left/right drawables
2277        if (dr != null) {
2278            dr.mDrawableLeftInitial = left;
2279            dr.mDrawableRightInitial = right;
2280        }
2281
2282        resetResolvedDrawables();
2283        resolveDrawables();
2284        applyCompoundDrawableTint();
2285        invalidate();
2286        requestLayout();
2287    }
2288
2289    /**
2290     * Sets the Drawables (if any) to appear to the left of, above, to the
2291     * right of, and below the text. Use 0 if you do not want a Drawable there.
2292     * The Drawables' bounds will be set to their intrinsic bounds.
2293     * <p>
2294     * Calling this method will overwrite any Drawables previously set using
2295     * {@link #setCompoundDrawablesRelative} or related methods.
2296     *
2297     * @param left Resource identifier of the left Drawable.
2298     * @param top Resource identifier of the top Drawable.
2299     * @param right Resource identifier of the right Drawable.
2300     * @param bottom Resource identifier of the bottom Drawable.
2301     *
2302     * @attr ref android.R.styleable#TextView_drawableLeft
2303     * @attr ref android.R.styleable#TextView_drawableTop
2304     * @attr ref android.R.styleable#TextView_drawableRight
2305     * @attr ref android.R.styleable#TextView_drawableBottom
2306     */
2307    @android.view.RemotableViewMethod
2308    public void setCompoundDrawablesWithIntrinsicBounds(@DrawableRes int left,
2309            @DrawableRes int top, @DrawableRes int right, @DrawableRes int bottom) {
2310        final Context context = getContext();
2311        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? context.getDrawable(left) : null,
2312                top != 0 ? context.getDrawable(top) : null,
2313                right != 0 ? context.getDrawable(right) : null,
2314                bottom != 0 ? context.getDrawable(bottom) : null);
2315    }
2316
2317    /**
2318     * Sets the Drawables (if any) to appear to the left of, above, to the
2319     * right of, and below the text. Use {@code null} if you do not want a
2320     * Drawable there. The Drawables' bounds will be set to their intrinsic
2321     * bounds.
2322     * <p>
2323     * Calling this method will overwrite any Drawables previously set using
2324     * {@link #setCompoundDrawablesRelative} or related methods.
2325     *
2326     * @attr ref android.R.styleable#TextView_drawableLeft
2327     * @attr ref android.R.styleable#TextView_drawableTop
2328     * @attr ref android.R.styleable#TextView_drawableRight
2329     * @attr ref android.R.styleable#TextView_drawableBottom
2330     */
2331    @android.view.RemotableViewMethod
2332    public void setCompoundDrawablesWithIntrinsicBounds(@Nullable Drawable left,
2333            @Nullable Drawable top, @Nullable Drawable right, @Nullable Drawable bottom) {
2334
2335        if (left != null) {
2336            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
2337        }
2338        if (right != null) {
2339            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
2340        }
2341        if (top != null) {
2342            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2343        }
2344        if (bottom != null) {
2345            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2346        }
2347        setCompoundDrawables(left, top, right, bottom);
2348    }
2349
2350    /**
2351     * Sets the Drawables (if any) to appear to the start of, above, to the end
2352     * of, and below the text. Use {@code null} if you do not want a Drawable
2353     * there. The Drawables must already have had {@link Drawable#setBounds}
2354     * called.
2355     * <p>
2356     * Calling this method will overwrite any Drawables previously set using
2357     * {@link #setCompoundDrawables} or related methods.
2358     *
2359     * @attr ref android.R.styleable#TextView_drawableStart
2360     * @attr ref android.R.styleable#TextView_drawableTop
2361     * @attr ref android.R.styleable#TextView_drawableEnd
2362     * @attr ref android.R.styleable#TextView_drawableBottom
2363     */
2364    @android.view.RemotableViewMethod
2365    public void setCompoundDrawablesRelative(@Nullable Drawable start, @Nullable Drawable top,
2366            @Nullable Drawable end, @Nullable Drawable bottom) {
2367        Drawables dr = mDrawables;
2368
2369        // We're switching to relative, discard absolute.
2370        if (dr != null) {
2371            if (dr.mShowing[Drawables.LEFT] != null) {
2372                dr.mShowing[Drawables.LEFT].setCallback(null);
2373            }
2374            dr.mShowing[Drawables.LEFT] = dr.mDrawableLeftInitial = null;
2375            if (dr.mShowing[Drawables.RIGHT] != null) {
2376                dr.mShowing[Drawables.RIGHT].setCallback(null);
2377            }
2378            dr.mShowing[Drawables.RIGHT] = dr.mDrawableRightInitial = null;
2379            dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2380            dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2381        }
2382
2383        final boolean drawables = start != null || top != null
2384                || end != null || bottom != null;
2385
2386        if (!drawables) {
2387            // Clearing drawables...  can we free the data structure?
2388            if (dr != null) {
2389                if (!dr.hasMetadata()) {
2390                    mDrawables = null;
2391                } else {
2392                    // We need to retain the last set padding, so just clear
2393                    // out all of the fields in the existing structure.
2394                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2395                    dr.mDrawableStart = null;
2396                    if (dr.mShowing[Drawables.TOP] != null) {
2397                        dr.mShowing[Drawables.TOP].setCallback(null);
2398                    }
2399                    dr.mShowing[Drawables.TOP] = null;
2400                    if (dr.mDrawableEnd != null) {
2401                        dr.mDrawableEnd.setCallback(null);
2402                    }
2403                    dr.mDrawableEnd = null;
2404                    if (dr.mShowing[Drawables.BOTTOM] != null) {
2405                        dr.mShowing[Drawables.BOTTOM].setCallback(null);
2406                    }
2407                    dr.mShowing[Drawables.BOTTOM] = null;
2408                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2409                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2410                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2411                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2412                }
2413            }
2414        } else {
2415            if (dr == null) {
2416                mDrawables = dr = new Drawables(getContext());
2417            }
2418
2419            mDrawables.mOverride = true;
2420
2421            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
2422                dr.mDrawableStart.setCallback(null);
2423            }
2424            dr.mDrawableStart = start;
2425
2426            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2427                dr.mShowing[Drawables.TOP].setCallback(null);
2428            }
2429            dr.mShowing[Drawables.TOP] = top;
2430
2431            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
2432                dr.mDrawableEnd.setCallback(null);
2433            }
2434            dr.mDrawableEnd = end;
2435
2436            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2437                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2438            }
2439            dr.mShowing[Drawables.BOTTOM] = bottom;
2440
2441            final Rect compoundRect = dr.mCompoundRect;
2442            int[] state;
2443
2444            state = getDrawableState();
2445
2446            if (start != null) {
2447                start.setState(state);
2448                start.copyBounds(compoundRect);
2449                start.setCallback(this);
2450                dr.mDrawableSizeStart = compoundRect.width();
2451                dr.mDrawableHeightStart = compoundRect.height();
2452            } else {
2453                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2454            }
2455
2456            if (end != null) {
2457                end.setState(state);
2458                end.copyBounds(compoundRect);
2459                end.setCallback(this);
2460                dr.mDrawableSizeEnd = compoundRect.width();
2461                dr.mDrawableHeightEnd = compoundRect.height();
2462            } else {
2463                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2464            }
2465
2466            if (top != null) {
2467                top.setState(state);
2468                top.copyBounds(compoundRect);
2469                top.setCallback(this);
2470                dr.mDrawableSizeTop = compoundRect.height();
2471                dr.mDrawableWidthTop = compoundRect.width();
2472            } else {
2473                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2474            }
2475
2476            if (bottom != null) {
2477                bottom.setState(state);
2478                bottom.copyBounds(compoundRect);
2479                bottom.setCallback(this);
2480                dr.mDrawableSizeBottom = compoundRect.height();
2481                dr.mDrawableWidthBottom = compoundRect.width();
2482            } else {
2483                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2484            }
2485        }
2486
2487        resetResolvedDrawables();
2488        resolveDrawables();
2489        invalidate();
2490        requestLayout();
2491    }
2492
2493    /**
2494     * Sets the Drawables (if any) to appear to the start of, above, to the end
2495     * of, and below the text. Use 0 if you do not want a Drawable there. The
2496     * Drawables' bounds will be set to their intrinsic bounds.
2497     * <p>
2498     * Calling this method will overwrite any Drawables previously set using
2499     * {@link #setCompoundDrawables} or related methods.
2500     *
2501     * @param start Resource identifier of the start Drawable.
2502     * @param top Resource identifier of the top Drawable.
2503     * @param end Resource identifier of the end Drawable.
2504     * @param bottom Resource identifier of the bottom Drawable.
2505     *
2506     * @attr ref android.R.styleable#TextView_drawableStart
2507     * @attr ref android.R.styleable#TextView_drawableTop
2508     * @attr ref android.R.styleable#TextView_drawableEnd
2509     * @attr ref android.R.styleable#TextView_drawableBottom
2510     */
2511    @android.view.RemotableViewMethod
2512    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@DrawableRes int start,
2513            @DrawableRes int top, @DrawableRes int end, @DrawableRes int bottom) {
2514        final Context context = getContext();
2515        setCompoundDrawablesRelativeWithIntrinsicBounds(
2516                start != 0 ? context.getDrawable(start) : null,
2517                top != 0 ? context.getDrawable(top) : null,
2518                end != 0 ? context.getDrawable(end) : null,
2519                bottom != 0 ? context.getDrawable(bottom) : null);
2520    }
2521
2522    /**
2523     * Sets the Drawables (if any) to appear to the start of, above, to the end
2524     * of, and below the text. Use {@code null} if you do not want a Drawable
2525     * there. The Drawables' bounds will be set to their intrinsic bounds.
2526     * <p>
2527     * Calling this method will overwrite any Drawables previously set using
2528     * {@link #setCompoundDrawables} or related methods.
2529     *
2530     * @attr ref android.R.styleable#TextView_drawableStart
2531     * @attr ref android.R.styleable#TextView_drawableTop
2532     * @attr ref android.R.styleable#TextView_drawableEnd
2533     * @attr ref android.R.styleable#TextView_drawableBottom
2534     */
2535    @android.view.RemotableViewMethod
2536    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@Nullable Drawable start,
2537            @Nullable Drawable top, @Nullable Drawable end, @Nullable Drawable bottom) {
2538
2539        if (start != null) {
2540            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2541        }
2542        if (end != null) {
2543            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2544        }
2545        if (top != null) {
2546            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2547        }
2548        if (bottom != null) {
2549            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2550        }
2551        setCompoundDrawablesRelative(start, top, end, bottom);
2552    }
2553
2554    /**
2555     * Returns drawables for the left, top, right, and bottom borders.
2556     *
2557     * @attr ref android.R.styleable#TextView_drawableLeft
2558     * @attr ref android.R.styleable#TextView_drawableTop
2559     * @attr ref android.R.styleable#TextView_drawableRight
2560     * @attr ref android.R.styleable#TextView_drawableBottom
2561     */
2562    @NonNull
2563    public Drawable[] getCompoundDrawables() {
2564        final Drawables dr = mDrawables;
2565        if (dr != null) {
2566            return dr.mShowing.clone();
2567        } else {
2568            return new Drawable[] { null, null, null, null };
2569        }
2570    }
2571
2572    /**
2573     * Returns drawables for the start, top, end, and bottom borders.
2574     *
2575     * @attr ref android.R.styleable#TextView_drawableStart
2576     * @attr ref android.R.styleable#TextView_drawableTop
2577     * @attr ref android.R.styleable#TextView_drawableEnd
2578     * @attr ref android.R.styleable#TextView_drawableBottom
2579     */
2580    @NonNull
2581    public Drawable[] getCompoundDrawablesRelative() {
2582        final Drawables dr = mDrawables;
2583        if (dr != null) {
2584            return new Drawable[] {
2585                dr.mDrawableStart, dr.mShowing[Drawables.TOP],
2586                dr.mDrawableEnd, dr.mShowing[Drawables.BOTTOM]
2587            };
2588        } else {
2589            return new Drawable[] { null, null, null, null };
2590        }
2591    }
2592
2593    /**
2594     * Sets the size of the padding between the compound drawables and
2595     * the text.
2596     *
2597     * @attr ref android.R.styleable#TextView_drawablePadding
2598     */
2599    @android.view.RemotableViewMethod
2600    public void setCompoundDrawablePadding(int pad) {
2601        Drawables dr = mDrawables;
2602        if (pad == 0) {
2603            if (dr != null) {
2604                dr.mDrawablePadding = pad;
2605            }
2606        } else {
2607            if (dr == null) {
2608                mDrawables = dr = new Drawables(getContext());
2609            }
2610            dr.mDrawablePadding = pad;
2611        }
2612
2613        invalidate();
2614        requestLayout();
2615    }
2616
2617    /**
2618     * Returns the padding between the compound drawables and the text.
2619     *
2620     * @attr ref android.R.styleable#TextView_drawablePadding
2621     */
2622    public int getCompoundDrawablePadding() {
2623        final Drawables dr = mDrawables;
2624        return dr != null ? dr.mDrawablePadding : 0;
2625    }
2626
2627    /**
2628     * Applies a tint to the compound drawables. Does not modify the
2629     * current tint mode, which is {@link PorterDuff.Mode#SRC_IN} by default.
2630     * <p>
2631     * Subsequent calls to
2632     * {@link #setCompoundDrawables(Drawable, Drawable, Drawable, Drawable)}
2633     * and related methods will automatically mutate the drawables and apply
2634     * the specified tint and tint mode using
2635     * {@link Drawable#setTintList(ColorStateList)}.
2636     *
2637     * @param tint the tint to apply, may be {@code null} to clear tint
2638     *
2639     * @attr ref android.R.styleable#TextView_drawableTint
2640     * @see #getCompoundDrawableTintList()
2641     * @see Drawable#setTintList(ColorStateList)
2642     */
2643    public void setCompoundDrawableTintList(@Nullable ColorStateList tint) {
2644        if (mDrawables == null) {
2645            mDrawables = new Drawables(getContext());
2646        }
2647        mDrawables.mTintList = tint;
2648        mDrawables.mHasTint = true;
2649
2650        applyCompoundDrawableTint();
2651    }
2652
2653    /**
2654     * @return the tint applied to the compound drawables
2655     * @attr ref android.R.styleable#TextView_drawableTint
2656     * @see #setCompoundDrawableTintList(ColorStateList)
2657     */
2658    public ColorStateList getCompoundDrawableTintList() {
2659        return mDrawables != null ? mDrawables.mTintList : null;
2660    }
2661
2662    /**
2663     * Specifies the blending mode used to apply the tint specified by
2664     * {@link #setCompoundDrawableTintList(ColorStateList)} to the compound
2665     * drawables. The default mode is {@link PorterDuff.Mode#SRC_IN}.
2666     *
2667     * @param tintMode the blending mode used to apply the tint, may be
2668     *                 {@code null} to clear tint
2669     * @attr ref android.R.styleable#TextView_drawableTintMode
2670     * @see #setCompoundDrawableTintList(ColorStateList)
2671     * @see Drawable#setTintMode(PorterDuff.Mode)
2672     */
2673    public void setCompoundDrawableTintMode(@Nullable PorterDuff.Mode tintMode) {
2674        if (mDrawables == null) {
2675            mDrawables = new Drawables(getContext());
2676        }
2677        mDrawables.mTintMode = tintMode;
2678        mDrawables.mHasTintMode = true;
2679
2680        applyCompoundDrawableTint();
2681    }
2682
2683    /**
2684     * Returns the blending mode used to apply the tint to the compound
2685     * drawables, if specified.
2686     *
2687     * @return the blending mode used to apply the tint to the compound
2688     *         drawables
2689     * @attr ref android.R.styleable#TextView_drawableTintMode
2690     * @see #setCompoundDrawableTintMode(PorterDuff.Mode)
2691     */
2692    public PorterDuff.Mode getCompoundDrawableTintMode() {
2693        return mDrawables != null ? mDrawables.mTintMode : null;
2694    }
2695
2696    private void applyCompoundDrawableTint() {
2697        if (mDrawables == null) {
2698            return;
2699        }
2700
2701        if (mDrawables.mHasTint || mDrawables.mHasTintMode) {
2702            final ColorStateList tintList = mDrawables.mTintList;
2703            final PorterDuff.Mode tintMode = mDrawables.mTintMode;
2704            final boolean hasTint = mDrawables.mHasTint;
2705            final boolean hasTintMode = mDrawables.mHasTintMode;
2706            final int[] state = getDrawableState();
2707
2708            for (Drawable dr : mDrawables.mShowing) {
2709                if (dr == null) {
2710                    continue;
2711                }
2712
2713                if (dr == mDrawables.mDrawableError) {
2714                    // From a developer's perspective, the error drawable isn't
2715                    // a compound drawable. Don't apply the generic compound
2716                    // drawable tint to it.
2717                    continue;
2718                }
2719
2720                dr.mutate();
2721
2722                if (hasTint) {
2723                    dr.setTintList(tintList);
2724                }
2725
2726                if (hasTintMode) {
2727                    dr.setTintMode(tintMode);
2728                }
2729
2730                // The drawable (or one of its children) may not have been
2731                // stateful before applying the tint, so let's try again.
2732                if (dr.isStateful()) {
2733                    dr.setState(state);
2734                }
2735            }
2736        }
2737    }
2738
2739    @Override
2740    public void setPadding(int left, int top, int right, int bottom) {
2741        if (left != mPaddingLeft ||
2742            right != mPaddingRight ||
2743            top != mPaddingTop ||
2744            bottom != mPaddingBottom) {
2745            nullLayouts();
2746        }
2747
2748        // the super call will requestLayout()
2749        super.setPadding(left, top, right, bottom);
2750        invalidate();
2751    }
2752
2753    @Override
2754    public void setPaddingRelative(int start, int top, int end, int bottom) {
2755        if (start != getPaddingStart() ||
2756            end != getPaddingEnd() ||
2757            top != mPaddingTop ||
2758            bottom != mPaddingBottom) {
2759            nullLayouts();
2760        }
2761
2762        // the super call will requestLayout()
2763        super.setPaddingRelative(start, top, end, bottom);
2764        invalidate();
2765    }
2766
2767    /**
2768     * Gets the autolink mask of the text.  See {@link
2769     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2770     * possible values.
2771     *
2772     * @attr ref android.R.styleable#TextView_autoLink
2773     */
2774    public final int getAutoLinkMask() {
2775        return mAutoLinkMask;
2776    }
2777
2778    /**
2779     * Sets the text appearance from the specified style resource.
2780     * <p>
2781     * Use a framework-defined {@code TextAppearance} style like
2782     * {@link android.R.style#TextAppearance_Material_Body1 @android:style/TextAppearance.Material.Body1}
2783     * or see {@link android.R.styleable#TextAppearance TextAppearance} for the
2784     * set of attributes that can be used in a custom style.
2785     *
2786     * @param resId the resource identifier of the style to apply
2787     * @attr ref android.R.styleable#TextView_textAppearance
2788     */
2789    @SuppressWarnings("deprecation")
2790    public void setTextAppearance(@StyleRes int resId) {
2791        setTextAppearance(mContext, resId);
2792    }
2793
2794    /**
2795     * Sets the text color, size, style, hint color, and highlight color
2796     * from the specified TextAppearance resource.
2797     *
2798     * @deprecated Use {@link #setTextAppearance(int)} instead.
2799     */
2800    @Deprecated
2801    public void setTextAppearance(Context context, @StyleRes int resId) {
2802        final TypedArray ta = context.obtainStyledAttributes(resId, R.styleable.TextAppearance);
2803
2804        final int textColorHighlight = ta.getColor(
2805                R.styleable.TextAppearance_textColorHighlight, 0);
2806        if (textColorHighlight != 0) {
2807            setHighlightColor(textColorHighlight);
2808        }
2809
2810        final ColorStateList textColor = ta.getColorStateList(R.styleable.TextAppearance_textColor);
2811        if (textColor != null) {
2812            setTextColor(textColor);
2813        }
2814
2815        final int textSize = ta.getDimensionPixelSize(R.styleable.TextAppearance_textSize, 0);
2816        if (textSize != 0) {
2817            setRawTextSize(textSize);
2818        }
2819
2820        final ColorStateList textColorHint = ta.getColorStateList(
2821                R.styleable.TextAppearance_textColorHint);
2822        if (textColorHint != null) {
2823            setHintTextColor(textColorHint);
2824        }
2825
2826        final ColorStateList textColorLink = ta.getColorStateList(
2827                R.styleable.TextAppearance_textColorLink);
2828        if (textColorLink != null) {
2829            setLinkTextColor(textColorLink);
2830        }
2831
2832        final String fontFamily = ta.getString(R.styleable.TextAppearance_fontFamily);
2833        final int typefaceIndex = ta.getInt(R.styleable.TextAppearance_typeface, -1);
2834        final int styleIndex = ta.getInt(R.styleable.TextAppearance_textStyle, -1);
2835        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
2836
2837        final int shadowColor = ta.getInt(R.styleable.TextAppearance_shadowColor, 0);
2838        if (shadowColor != 0) {
2839            final float dx = ta.getFloat(R.styleable.TextAppearance_shadowDx, 0);
2840            final float dy = ta.getFloat(R.styleable.TextAppearance_shadowDy, 0);
2841            final float r = ta.getFloat(R.styleable.TextAppearance_shadowRadius, 0);
2842            setShadowLayer(r, dx, dy, shadowColor);
2843        }
2844
2845        if (ta.getBoolean(R.styleable.TextAppearance_textAllCaps, false)) {
2846            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2847        }
2848
2849        if (ta.hasValue(R.styleable.TextAppearance_elegantTextHeight)) {
2850            setElegantTextHeight(ta.getBoolean(
2851                R.styleable.TextAppearance_elegantTextHeight, false));
2852        }
2853
2854        if (ta.hasValue(R.styleable.TextAppearance_letterSpacing)) {
2855            setLetterSpacing(ta.getFloat(
2856                R.styleable.TextAppearance_letterSpacing, 0));
2857        }
2858
2859        if (ta.hasValue(R.styleable.TextAppearance_fontFeatureSettings)) {
2860            setFontFeatureSettings(ta.getString(
2861                R.styleable.TextAppearance_fontFeatureSettings));
2862        }
2863
2864        ta.recycle();
2865    }
2866
2867    /**
2868     * Get the default primary {@link Locale} of the text in this TextView. This will always be
2869     * the first member of {@link #getTextLocales()}.
2870     * @return the default primary {@link Locale} of the text in this TextView.
2871     */
2872    @NonNull
2873    public Locale getTextLocale() {
2874        return mTextPaint.getTextLocale();
2875    }
2876
2877    /**
2878     * Get the default {@link LocaleList} of the text in this TextView.
2879     * @return the default {@link LocaleList} of the text in this TextView.
2880     */
2881    @NonNull @Size(min=1)
2882    public LocaleList getTextLocales() {
2883        return mTextPaint.getTextLocales();
2884    }
2885
2886    /**
2887     * Set the default {@link LocaleList} of the text in this TextView to a one-member list
2888     * containing just the given value.
2889     *
2890     * @param locale the {@link Locale} for drawing text, must not be null.
2891     *
2892     * @see #setTextLocales
2893     */
2894    public void setTextLocale(@NonNull Locale locale) {
2895        mLocalesChanged = true;
2896        mTextPaint.setTextLocale(locale);
2897        if (mLayout != null) {
2898            nullLayouts();
2899            requestLayout();
2900            invalidate();
2901        }
2902    }
2903
2904    /**
2905     * Set the default {@link LocaleList} of the text in this TextView to the given value.
2906     *
2907     * This value is used to choose appropriate typefaces for ambiguous characters (typically used
2908     * for CJK locales to disambiguate Hanzi/Kanji/Hanja characters). It also affects
2909     * other aspects of text display, including line breaking.
2910     *
2911     * @param locales the {@link LocaleList} for drawing text, must not be null or empty.
2912     *
2913     * @see Paint#setTextLocales
2914     */
2915    public void setTextLocales(@NonNull @Size(min=1) LocaleList locales) {
2916        mLocalesChanged = true;
2917        mTextPaint.setTextLocales(locales);
2918        if (mLayout != null) {
2919            nullLayouts();
2920            requestLayout();
2921            invalidate();
2922        }
2923    }
2924
2925    @Override
2926    protected void onConfigurationChanged(Configuration newConfig) {
2927        super.onConfigurationChanged(newConfig);
2928        if (!mLocalesChanged) {
2929            mTextPaint.setTextLocales(LocaleList.getDefault());
2930            if (mLayout != null) {
2931                nullLayouts();
2932                requestLayout();
2933                invalidate();
2934            }
2935        }
2936    }
2937
2938    /**
2939     * @return the size (in pixels) of the default text size in this TextView.
2940     */
2941    @ViewDebug.ExportedProperty(category = "text")
2942    public float getTextSize() {
2943        return mTextPaint.getTextSize();
2944    }
2945
2946    /**
2947     * @return the size (in scaled pixels) of thee default text size in this TextView.
2948     * @hide
2949     */
2950    @ViewDebug.ExportedProperty(category = "text")
2951    public float getScaledTextSize() {
2952        return mTextPaint.getTextSize() / mTextPaint.density;
2953    }
2954
2955    /** @hide */
2956    @ViewDebug.ExportedProperty(category = "text", mapping = {
2957            @ViewDebug.IntToString(from = Typeface.NORMAL, to = "NORMAL"),
2958            @ViewDebug.IntToString(from = Typeface.BOLD, to = "BOLD"),
2959            @ViewDebug.IntToString(from = Typeface.ITALIC, to = "ITALIC"),
2960            @ViewDebug.IntToString(from = Typeface.BOLD_ITALIC, to = "BOLD_ITALIC")
2961    })
2962    public int getTypefaceStyle() {
2963        Typeface typeface = mTextPaint.getTypeface();
2964        return typeface != null ? typeface.getStyle() : Typeface.NORMAL;
2965    }
2966
2967    /**
2968     * Set the default text size to the given value, interpreted as "scaled
2969     * pixel" units.  This size is adjusted based on the current density and
2970     * user font size preference.
2971     *
2972     * @param size The scaled pixel size.
2973     *
2974     * @attr ref android.R.styleable#TextView_textSize
2975     */
2976    @android.view.RemotableViewMethod
2977    public void setTextSize(float size) {
2978        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2979    }
2980
2981    /**
2982     * Set the default text size to a given unit and value.  See {@link
2983     * TypedValue} for the possible dimension units.
2984     *
2985     * @param unit The desired dimension unit.
2986     * @param size The desired size in the given units.
2987     *
2988     * @attr ref android.R.styleable#TextView_textSize
2989     */
2990    public void setTextSize(int unit, float size) {
2991        Context c = getContext();
2992        Resources r;
2993
2994        if (c == null)
2995            r = Resources.getSystem();
2996        else
2997            r = c.getResources();
2998
2999        setRawTextSize(TypedValue.applyDimension(
3000                unit, size, r.getDisplayMetrics()));
3001    }
3002
3003    private void setRawTextSize(float size) {
3004        if (size != mTextPaint.getTextSize()) {
3005            mTextPaint.setTextSize(size);
3006
3007            if (mLayout != null) {
3008                nullLayouts();
3009                requestLayout();
3010                invalidate();
3011            }
3012        }
3013    }
3014
3015    /**
3016     * @return the extent by which text is currently being stretched
3017     * horizontally.  This will usually be 1.
3018     */
3019    public float getTextScaleX() {
3020        return mTextPaint.getTextScaleX();
3021    }
3022
3023    /**
3024     * Sets the extent by which text should be stretched horizontally.
3025     *
3026     * @attr ref android.R.styleable#TextView_textScaleX
3027     */
3028    @android.view.RemotableViewMethod
3029    public void setTextScaleX(float size) {
3030        if (size != mTextPaint.getTextScaleX()) {
3031            mUserSetTextScaleX = true;
3032            mTextPaint.setTextScaleX(size);
3033
3034            if (mLayout != null) {
3035                nullLayouts();
3036                requestLayout();
3037                invalidate();
3038            }
3039        }
3040    }
3041
3042    /**
3043     * Sets the typeface and style in which the text should be displayed.
3044     * Note that not all Typeface families actually have bold and italic
3045     * variants, so you may need to use
3046     * {@link #setTypeface(Typeface, int)} to get the appearance
3047     * that you actually want.
3048     *
3049     * @see #getTypeface()
3050     *
3051     * @attr ref android.R.styleable#TextView_fontFamily
3052     * @attr ref android.R.styleable#TextView_typeface
3053     * @attr ref android.R.styleable#TextView_textStyle
3054     */
3055    public void setTypeface(Typeface tf) {
3056        if (mTextPaint.getTypeface() != tf) {
3057            mTextPaint.setTypeface(tf);
3058
3059            if (mLayout != null) {
3060                nullLayouts();
3061                requestLayout();
3062                invalidate();
3063            }
3064        }
3065    }
3066
3067    /**
3068     * @return the current typeface and style in which the text is being
3069     * displayed.
3070     *
3071     * @see #setTypeface(Typeface)
3072     *
3073     * @attr ref android.R.styleable#TextView_fontFamily
3074     * @attr ref android.R.styleable#TextView_typeface
3075     * @attr ref android.R.styleable#TextView_textStyle
3076     */
3077    public Typeface getTypeface() {
3078        return mTextPaint.getTypeface();
3079    }
3080
3081    /**
3082     * Set the TextView's elegant height metrics flag. This setting selects font
3083     * variants that have not been compacted to fit Latin-based vertical
3084     * metrics, and also increases top and bottom bounds to provide more space.
3085     *
3086     * @param elegant set the paint's elegant metrics flag.
3087     *
3088     * @attr ref android.R.styleable#TextView_elegantTextHeight
3089     */
3090    public void setElegantTextHeight(boolean elegant) {
3091        if (elegant != mTextPaint.isElegantTextHeight()) {
3092            mTextPaint.setElegantTextHeight(elegant);
3093            if (mLayout != null) {
3094                nullLayouts();
3095                requestLayout();
3096                invalidate();
3097            }
3098        }
3099    }
3100
3101    /**
3102     * @return the extent by which text is currently being letter-spaced.
3103     * This will normally be 0.
3104     *
3105     * @see #setLetterSpacing(float)
3106     * @see Paint#setLetterSpacing
3107     */
3108    public float getLetterSpacing() {
3109        return mTextPaint.getLetterSpacing();
3110    }
3111
3112    /**
3113     * Sets text letter-spacing.  The value is in 'EM' units.  Typical values
3114     * for slight expansion will be around 0.05.  Negative values tighten text.
3115     *
3116     * @see #getLetterSpacing()
3117     * @see Paint#getLetterSpacing
3118     *
3119     * @attr ref android.R.styleable#TextView_letterSpacing
3120     */
3121    @android.view.RemotableViewMethod
3122    public void setLetterSpacing(float letterSpacing) {
3123        if (letterSpacing != mTextPaint.getLetterSpacing()) {
3124            mTextPaint.setLetterSpacing(letterSpacing);
3125
3126            if (mLayout != null) {
3127                nullLayouts();
3128                requestLayout();
3129                invalidate();
3130            }
3131        }
3132    }
3133
3134    /**
3135     * Returns the font feature settings. The format is the same as the CSS
3136     * font-feature-settings attribute:
3137     * <a href="http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings">
3138     *     http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings</a>
3139     *
3140     * @return the currently set font feature settings.  Default is null.
3141     *
3142     * @see #setFontFeatureSettings(String)
3143     * @see Paint#setFontFeatureSettings(String) Paint.setFontFeatureSettings(String)
3144     */
3145    @Nullable
3146    public String getFontFeatureSettings() {
3147        return mTextPaint.getFontFeatureSettings();
3148    }
3149
3150    /**
3151     * Sets the break strategy for breaking paragraphs into lines. The default value for
3152     * TextView is {@link Layout#BREAK_STRATEGY_HIGH_QUALITY}, and the default value for
3153     * EditText is {@link Layout#BREAK_STRATEGY_SIMPLE}, the latter to avoid the
3154     * text "dancing" when being edited.
3155     *
3156     * @attr ref android.R.styleable#TextView_breakStrategy
3157     * @see #getBreakStrategy()
3158     */
3159    public void setBreakStrategy(@Layout.BreakStrategy int breakStrategy) {
3160        mBreakStrategy = breakStrategy;
3161        if (mLayout != null) {
3162            nullLayouts();
3163            requestLayout();
3164            invalidate();
3165        }
3166    }
3167
3168    /**
3169     * @return the currently set break strategy.
3170     *
3171     * @attr ref android.R.styleable#TextView_breakStrategy
3172     * @see #setBreakStrategy(int)
3173     */
3174    @Layout.BreakStrategy
3175    public int getBreakStrategy() {
3176        return mBreakStrategy;
3177    }
3178
3179    /**
3180     * Sets the hyphenation frequency. The default value for both TextView and EditText, which is set
3181     * from the theme, is {@link Layout#HYPHENATION_FREQUENCY_NORMAL}.
3182     *
3183     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3184     * @see #getHyphenationFrequency()
3185     */
3186    public void setHyphenationFrequency(@Layout.HyphenationFrequency int hyphenationFrequency) {
3187        mHyphenationFrequency = hyphenationFrequency;
3188        if (mLayout != null) {
3189            nullLayouts();
3190            requestLayout();
3191            invalidate();
3192        }
3193    }
3194
3195    /**
3196     * @return the currently set hyphenation frequency.
3197     *
3198     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3199     * @see #setHyphenationFrequency(int)
3200     */
3201    @Layout.HyphenationFrequency
3202    public int getHyphenationFrequency() {
3203        return mHyphenationFrequency;
3204    }
3205
3206    /**
3207     * Sets font feature settings. The format is the same as the CSS
3208     * font-feature-settings attribute:
3209     * <a href="http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings">
3210     *     http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings</a>
3211     *
3212     * @param fontFeatureSettings font feature settings represented as CSS compatible string
3213     *
3214     * @see #getFontFeatureSettings()
3215     * @see Paint#getFontFeatureSettings() Paint.getFontFeatureSettings()
3216     *
3217     * @attr ref android.R.styleable#TextView_fontFeatureSettings
3218     */
3219    @android.view.RemotableViewMethod
3220    public void setFontFeatureSettings(@Nullable String fontFeatureSettings) {
3221        if (fontFeatureSettings != mTextPaint.getFontFeatureSettings()) {
3222            mTextPaint.setFontFeatureSettings(fontFeatureSettings);
3223
3224            if (mLayout != null) {
3225                nullLayouts();
3226                requestLayout();
3227                invalidate();
3228            }
3229        }
3230    }
3231
3232
3233    /**
3234     * Sets the text color for all the states (normal, selected,
3235     * focused) to be this color.
3236     *
3237     * @see #setTextColor(ColorStateList)
3238     * @see #getTextColors()
3239     *
3240     * @attr ref android.R.styleable#TextView_textColor
3241     */
3242    @android.view.RemotableViewMethod
3243    public void setTextColor(@ColorInt int color) {
3244        mTextColor = ColorStateList.valueOf(color);
3245        updateTextColors();
3246    }
3247
3248    /**
3249     * Sets the text color.
3250     *
3251     * @see #setTextColor(int)
3252     * @see #getTextColors()
3253     * @see #setHintTextColor(ColorStateList)
3254     * @see #setLinkTextColor(ColorStateList)
3255     *
3256     * @attr ref android.R.styleable#TextView_textColor
3257     */
3258    public void setTextColor(ColorStateList colors) {
3259        if (colors == null) {
3260            throw new NullPointerException();
3261        }
3262
3263        mTextColor = colors;
3264        updateTextColors();
3265    }
3266
3267    /**
3268     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
3269     *
3270     * @see #setTextColor(ColorStateList)
3271     * @see #setTextColor(int)
3272     *
3273     * @attr ref android.R.styleable#TextView_textColor
3274     */
3275    public final ColorStateList getTextColors() {
3276        return mTextColor;
3277    }
3278
3279    /**
3280     * <p>Return the current color selected for normal text.</p>
3281     *
3282     * @return Returns the current text color.
3283     */
3284    @ColorInt
3285    public final int getCurrentTextColor() {
3286        return mCurTextColor;
3287    }
3288
3289    /**
3290     * Sets the color used to display the selection highlight.
3291     *
3292     * @attr ref android.R.styleable#TextView_textColorHighlight
3293     */
3294    @android.view.RemotableViewMethod
3295    public void setHighlightColor(@ColorInt int color) {
3296        if (mHighlightColor != color) {
3297            mHighlightColor = color;
3298            invalidate();
3299        }
3300    }
3301
3302    /**
3303     * @return the color used to display the selection highlight
3304     *
3305     * @see #setHighlightColor(int)
3306     *
3307     * @attr ref android.R.styleable#TextView_textColorHighlight
3308     */
3309    @ColorInt
3310    public int getHighlightColor() {
3311        return mHighlightColor;
3312    }
3313
3314    /**
3315     * Sets whether the soft input method will be made visible when this
3316     * TextView gets focused. The default is true.
3317     */
3318    @android.view.RemotableViewMethod
3319    public final void setShowSoftInputOnFocus(boolean show) {
3320        createEditorIfNeeded();
3321        mEditor.mShowSoftInputOnFocus = show;
3322    }
3323
3324    /**
3325     * Returns whether the soft input method will be made visible when this
3326     * TextView gets focused. The default is true.
3327     */
3328    public final boolean getShowSoftInputOnFocus() {
3329        // When there is no Editor, return default true value
3330        return mEditor == null || mEditor.mShowSoftInputOnFocus;
3331    }
3332
3333    /**
3334     * Gives the text a shadow of the specified blur radius and color, the specified
3335     * distance from its drawn position.
3336     * <p>
3337     * The text shadow produced does not interact with the properties on view
3338     * that are responsible for real time shadows,
3339     * {@link View#getElevation() elevation} and
3340     * {@link View#getTranslationZ() translationZ}.
3341     *
3342     * @see Paint#setShadowLayer(float, float, float, int)
3343     *
3344     * @attr ref android.R.styleable#TextView_shadowColor
3345     * @attr ref android.R.styleable#TextView_shadowDx
3346     * @attr ref android.R.styleable#TextView_shadowDy
3347     * @attr ref android.R.styleable#TextView_shadowRadius
3348     */
3349    public void setShadowLayer(float radius, float dx, float dy, int color) {
3350        mTextPaint.setShadowLayer(radius, dx, dy, color);
3351
3352        mShadowRadius = radius;
3353        mShadowDx = dx;
3354        mShadowDy = dy;
3355        mShadowColor = color;
3356
3357        // Will change text clip region
3358        if (mEditor != null) {
3359            mEditor.invalidateTextDisplayList();
3360            mEditor.invalidateHandlesAndActionMode();
3361        }
3362        invalidate();
3363    }
3364
3365    /**
3366     * Gets the radius of the shadow layer.
3367     *
3368     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
3369     *
3370     * @see #setShadowLayer(float, float, float, int)
3371     *
3372     * @attr ref android.R.styleable#TextView_shadowRadius
3373     */
3374    public float getShadowRadius() {
3375        return mShadowRadius;
3376    }
3377
3378    /**
3379     * @return the horizontal offset of the shadow layer
3380     *
3381     * @see #setShadowLayer(float, float, float, int)
3382     *
3383     * @attr ref android.R.styleable#TextView_shadowDx
3384     */
3385    public float getShadowDx() {
3386        return mShadowDx;
3387    }
3388
3389    /**
3390     * @return the vertical offset of the shadow layer
3391     *
3392     * @see #setShadowLayer(float, float, float, int)
3393     *
3394     * @attr ref android.R.styleable#TextView_shadowDy
3395     */
3396    public float getShadowDy() {
3397        return mShadowDy;
3398    }
3399
3400    /**
3401     * @return the color of the shadow layer
3402     *
3403     * @see #setShadowLayer(float, float, float, int)
3404     *
3405     * @attr ref android.R.styleable#TextView_shadowColor
3406     */
3407    @ColorInt
3408    public int getShadowColor() {
3409        return mShadowColor;
3410    }
3411
3412    /**
3413     * @return the base paint used for the text.  Please use this only to
3414     * consult the Paint's properties and not to change them.
3415     */
3416    public TextPaint getPaint() {
3417        return mTextPaint;
3418    }
3419
3420    /**
3421     * Sets the autolink mask of the text.  See {@link
3422     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
3423     * possible values.
3424     *
3425     * @attr ref android.R.styleable#TextView_autoLink
3426     */
3427    @android.view.RemotableViewMethod
3428    public final void setAutoLinkMask(int mask) {
3429        mAutoLinkMask = mask;
3430    }
3431
3432    /**
3433     * Sets whether the movement method will automatically be set to
3434     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
3435     * set to nonzero and links are detected in {@link #setText}.
3436     * The default is true.
3437     *
3438     * @attr ref android.R.styleable#TextView_linksClickable
3439     */
3440    @android.view.RemotableViewMethod
3441    public final void setLinksClickable(boolean whether) {
3442        mLinksClickable = whether;
3443    }
3444
3445    /**
3446     * Returns whether the movement method will automatically be set to
3447     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
3448     * set to nonzero and links are detected in {@link #setText}.
3449     * The default is true.
3450     *
3451     * @attr ref android.R.styleable#TextView_linksClickable
3452     */
3453    public final boolean getLinksClickable() {
3454        return mLinksClickable;
3455    }
3456
3457    /**
3458     * Returns the list of URLSpans attached to the text
3459     * (by {@link Linkify} or otherwise) if any.  You can call
3460     * {@link URLSpan#getURL} on them to find where they link to
3461     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
3462     * to find the region of the text they are attached to.
3463     */
3464    public URLSpan[] getUrls() {
3465        if (mText instanceof Spanned) {
3466            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
3467        } else {
3468            return new URLSpan[0];
3469        }
3470    }
3471
3472    /**
3473     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
3474     * TextView.
3475     *
3476     * @see #setHintTextColor(ColorStateList)
3477     * @see #getHintTextColors()
3478     * @see #setTextColor(int)
3479     *
3480     * @attr ref android.R.styleable#TextView_textColorHint
3481     */
3482    @android.view.RemotableViewMethod
3483    public final void setHintTextColor(@ColorInt int color) {
3484        mHintTextColor = ColorStateList.valueOf(color);
3485        updateTextColors();
3486    }
3487
3488    /**
3489     * Sets the color of the hint text.
3490     *
3491     * @see #getHintTextColors()
3492     * @see #setHintTextColor(int)
3493     * @see #setTextColor(ColorStateList)
3494     * @see #setLinkTextColor(ColorStateList)
3495     *
3496     * @attr ref android.R.styleable#TextView_textColorHint
3497     */
3498    public final void setHintTextColor(ColorStateList colors) {
3499        mHintTextColor = colors;
3500        updateTextColors();
3501    }
3502
3503    /**
3504     * @return the color of the hint text, for the different states of this TextView.
3505     *
3506     * @see #setHintTextColor(ColorStateList)
3507     * @see #setHintTextColor(int)
3508     * @see #setTextColor(ColorStateList)
3509     * @see #setLinkTextColor(ColorStateList)
3510     *
3511     * @attr ref android.R.styleable#TextView_textColorHint
3512     */
3513    public final ColorStateList getHintTextColors() {
3514        return mHintTextColor;
3515    }
3516
3517    /**
3518     * <p>Return the current color selected to paint the hint text.</p>
3519     *
3520     * @return Returns the current hint text color.
3521     */
3522    @ColorInt
3523    public final int getCurrentHintTextColor() {
3524        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
3525    }
3526
3527    /**
3528     * Sets the color of links in the text.
3529     *
3530     * @see #setLinkTextColor(ColorStateList)
3531     * @see #getLinkTextColors()
3532     *
3533     * @attr ref android.R.styleable#TextView_textColorLink
3534     */
3535    @android.view.RemotableViewMethod
3536    public final void setLinkTextColor(@ColorInt int color) {
3537        mLinkTextColor = ColorStateList.valueOf(color);
3538        updateTextColors();
3539    }
3540
3541    /**
3542     * Sets the color of links in the text.
3543     *
3544     * @see #setLinkTextColor(int)
3545     * @see #getLinkTextColors()
3546     * @see #setTextColor(ColorStateList)
3547     * @see #setHintTextColor(ColorStateList)
3548     *
3549     * @attr ref android.R.styleable#TextView_textColorLink
3550     */
3551    public final void setLinkTextColor(ColorStateList colors) {
3552        mLinkTextColor = colors;
3553        updateTextColors();
3554    }
3555
3556    /**
3557     * @return the list of colors used to paint the links in the text, for the different states of
3558     * this TextView
3559     *
3560     * @see #setLinkTextColor(ColorStateList)
3561     * @see #setLinkTextColor(int)
3562     *
3563     * @attr ref android.R.styleable#TextView_textColorLink
3564     */
3565    public final ColorStateList getLinkTextColors() {
3566        return mLinkTextColor;
3567    }
3568
3569    /**
3570     * Sets the horizontal alignment of the text and the
3571     * vertical gravity that will be used when there is extra space
3572     * in the TextView beyond what is required for the text itself.
3573     *
3574     * @see android.view.Gravity
3575     * @attr ref android.R.styleable#TextView_gravity
3576     */
3577    public void setGravity(int gravity) {
3578        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
3579            gravity |= Gravity.START;
3580        }
3581        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
3582            gravity |= Gravity.TOP;
3583        }
3584
3585        boolean newLayout = false;
3586
3587        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
3588            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
3589            newLayout = true;
3590        }
3591
3592        if (gravity != mGravity) {
3593            invalidate();
3594        }
3595
3596        mGravity = gravity;
3597
3598        if (mLayout != null && newLayout) {
3599            // XXX this is heavy-handed because no actual content changes.
3600            int want = mLayout.getWidth();
3601            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
3602
3603            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
3604                          mRight - mLeft - getCompoundPaddingLeft() -
3605                          getCompoundPaddingRight(), true);
3606        }
3607    }
3608
3609    /**
3610     * Returns the horizontal and vertical alignment of this TextView.
3611     *
3612     * @see android.view.Gravity
3613     * @attr ref android.R.styleable#TextView_gravity
3614     */
3615    public int getGravity() {
3616        return mGravity;
3617    }
3618
3619    /**
3620     * @return the flags on the Paint being used to display the text.
3621     * @see Paint#getFlags
3622     */
3623    public int getPaintFlags() {
3624        return mTextPaint.getFlags();
3625    }
3626
3627    /**
3628     * Sets flags on the Paint being used to display the text and
3629     * reflows the text if they are different from the old flags.
3630     * @see Paint#setFlags
3631     */
3632    @android.view.RemotableViewMethod
3633    public void setPaintFlags(int flags) {
3634        if (mTextPaint.getFlags() != flags) {
3635            mTextPaint.setFlags(flags);
3636
3637            if (mLayout != null) {
3638                nullLayouts();
3639                requestLayout();
3640                invalidate();
3641            }
3642        }
3643    }
3644
3645    /**
3646     * Sets whether the text should be allowed to be wider than the
3647     * View is.  If false, it will be wrapped to the width of the View.
3648     *
3649     * @attr ref android.R.styleable#TextView_scrollHorizontally
3650     */
3651    public void setHorizontallyScrolling(boolean whether) {
3652        if (mHorizontallyScrolling != whether) {
3653            mHorizontallyScrolling = whether;
3654
3655            if (mLayout != null) {
3656                nullLayouts();
3657                requestLayout();
3658                invalidate();
3659            }
3660        }
3661    }
3662
3663    /**
3664     * Returns whether the text is allowed to be wider than the View is.
3665     * If false, the text will be wrapped to the width of the View.
3666     *
3667     * @attr ref android.R.styleable#TextView_scrollHorizontally
3668     * @hide
3669     */
3670    public boolean getHorizontallyScrolling() {
3671        return mHorizontallyScrolling;
3672    }
3673
3674    /**
3675     * Makes the TextView at least this many lines tall.
3676     *
3677     * Setting this value overrides any other (minimum) height setting. A single line TextView will
3678     * set this value to 1.
3679     *
3680     * @see #getMinLines()
3681     *
3682     * @attr ref android.R.styleable#TextView_minLines
3683     */
3684    @android.view.RemotableViewMethod
3685    public void setMinLines(int minlines) {
3686        mMinimum = minlines;
3687        mMinMode = LINES;
3688
3689        requestLayout();
3690        invalidate();
3691    }
3692
3693    /**
3694     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
3695     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
3696     *
3697     * @see #setMinLines(int)
3698     *
3699     * @attr ref android.R.styleable#TextView_minLines
3700     */
3701    public int getMinLines() {
3702        return mMinMode == LINES ? mMinimum : -1;
3703    }
3704
3705    /**
3706     * Makes the TextView at least this many pixels tall.
3707     *
3708     * Setting this value overrides any other (minimum) number of lines setting.
3709     *
3710     * @attr ref android.R.styleable#TextView_minHeight
3711     */
3712    @android.view.RemotableViewMethod
3713    public void setMinHeight(int minHeight) {
3714        mMinimum = minHeight;
3715        mMinMode = PIXELS;
3716
3717        requestLayout();
3718        invalidate();
3719    }
3720
3721    /**
3722     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
3723     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
3724     *
3725     * @see #setMinHeight(int)
3726     *
3727     * @attr ref android.R.styleable#TextView_minHeight
3728     */
3729    public int getMinHeight() {
3730        return mMinMode == PIXELS ? mMinimum : -1;
3731    }
3732
3733    /**
3734     * Makes the TextView at most this many lines tall.
3735     *
3736     * Setting this value overrides any other (maximum) height setting.
3737     *
3738     * @attr ref android.R.styleable#TextView_maxLines
3739     */
3740    @android.view.RemotableViewMethod
3741    public void setMaxLines(int maxlines) {
3742        mMaximum = maxlines;
3743        mMaxMode = LINES;
3744
3745        requestLayout();
3746        invalidate();
3747    }
3748
3749    /**
3750     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
3751     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
3752     *
3753     * @see #setMaxLines(int)
3754     *
3755     * @attr ref android.R.styleable#TextView_maxLines
3756     */
3757    public int getMaxLines() {
3758        return mMaxMode == LINES ? mMaximum : -1;
3759    }
3760
3761    /**
3762     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
3763     * {@link #setMaxLines(int)} method.
3764     *
3765     * Setting this value overrides any other (maximum) number of lines setting.
3766     *
3767     * @attr ref android.R.styleable#TextView_maxHeight
3768     */
3769    @android.view.RemotableViewMethod
3770    public void setMaxHeight(int maxHeight) {
3771        mMaximum = maxHeight;
3772        mMaxMode = PIXELS;
3773
3774        requestLayout();
3775        invalidate();
3776    }
3777
3778    /**
3779     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
3780     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
3781     *
3782     * @see #setMaxHeight(int)
3783     *
3784     * @attr ref android.R.styleable#TextView_maxHeight
3785     */
3786    public int getMaxHeight() {
3787        return mMaxMode == PIXELS ? mMaximum : -1;
3788    }
3789
3790    /**
3791     * Makes the TextView exactly this many lines tall.
3792     *
3793     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3794     * height setting. A single line TextView will set this value to 1.
3795     *
3796     * @attr ref android.R.styleable#TextView_lines
3797     */
3798    @android.view.RemotableViewMethod
3799    public void setLines(int lines) {
3800        mMaximum = mMinimum = lines;
3801        mMaxMode = mMinMode = LINES;
3802
3803        requestLayout();
3804        invalidate();
3805    }
3806
3807    /**
3808     * Makes the TextView exactly this many pixels tall.
3809     * You could do the same thing by specifying this number in the
3810     * LayoutParams.
3811     *
3812     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3813     * height setting.
3814     *
3815     * @attr ref android.R.styleable#TextView_height
3816     */
3817    @android.view.RemotableViewMethod
3818    public void setHeight(int pixels) {
3819        mMaximum = mMinimum = pixels;
3820        mMaxMode = mMinMode = PIXELS;
3821
3822        requestLayout();
3823        invalidate();
3824    }
3825
3826    /**
3827     * Makes the TextView at least this many ems wide
3828     *
3829     * @attr ref android.R.styleable#TextView_minEms
3830     */
3831    @android.view.RemotableViewMethod
3832    public void setMinEms(int minems) {
3833        mMinWidth = minems;
3834        mMinWidthMode = EMS;
3835
3836        requestLayout();
3837        invalidate();
3838    }
3839
3840    /**
3841     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
3842     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
3843     *
3844     * @see #setMinEms(int)
3845     * @see #setEms(int)
3846     *
3847     * @attr ref android.R.styleable#TextView_minEms
3848     */
3849    public int getMinEms() {
3850        return mMinWidthMode == EMS ? mMinWidth : -1;
3851    }
3852
3853    /**
3854     * Makes the TextView at least this many pixels wide
3855     *
3856     * @attr ref android.R.styleable#TextView_minWidth
3857     */
3858    @android.view.RemotableViewMethod
3859    public void setMinWidth(int minpixels) {
3860        mMinWidth = minpixels;
3861        mMinWidthMode = PIXELS;
3862
3863        requestLayout();
3864        invalidate();
3865    }
3866
3867    /**
3868     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
3869     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
3870     *
3871     * @see #setMinWidth(int)
3872     * @see #setWidth(int)
3873     *
3874     * @attr ref android.R.styleable#TextView_minWidth
3875     */
3876    public int getMinWidth() {
3877        return mMinWidthMode == PIXELS ? mMinWidth : -1;
3878    }
3879
3880    /**
3881     * Makes the TextView at most this many ems wide
3882     *
3883     * @attr ref android.R.styleable#TextView_maxEms
3884     */
3885    @android.view.RemotableViewMethod
3886    public void setMaxEms(int maxems) {
3887        mMaxWidth = maxems;
3888        mMaxWidthMode = EMS;
3889
3890        requestLayout();
3891        invalidate();
3892    }
3893
3894    /**
3895     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3896     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3897     *
3898     * @see #setMaxEms(int)
3899     * @see #setEms(int)
3900     *
3901     * @attr ref android.R.styleable#TextView_maxEms
3902     */
3903    public int getMaxEms() {
3904        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3905    }
3906
3907    /**
3908     * Makes the TextView at most this many pixels wide
3909     *
3910     * @attr ref android.R.styleable#TextView_maxWidth
3911     */
3912    @android.view.RemotableViewMethod
3913    public void setMaxWidth(int maxpixels) {
3914        mMaxWidth = maxpixels;
3915        mMaxWidthMode = PIXELS;
3916
3917        requestLayout();
3918        invalidate();
3919    }
3920
3921    /**
3922     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3923     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3924     *
3925     * @see #setMaxWidth(int)
3926     * @see #setWidth(int)
3927     *
3928     * @attr ref android.R.styleable#TextView_maxWidth
3929     */
3930    public int getMaxWidth() {
3931        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3932    }
3933
3934    /**
3935     * Makes the TextView exactly this many ems wide
3936     *
3937     * @see #setMaxEms(int)
3938     * @see #setMinEms(int)
3939     * @see #getMinEms()
3940     * @see #getMaxEms()
3941     *
3942     * @attr ref android.R.styleable#TextView_ems
3943     */
3944    @android.view.RemotableViewMethod
3945    public void setEms(int ems) {
3946        mMaxWidth = mMinWidth = ems;
3947        mMaxWidthMode = mMinWidthMode = EMS;
3948
3949        requestLayout();
3950        invalidate();
3951    }
3952
3953    /**
3954     * Makes the TextView exactly this many pixels wide.
3955     * You could do the same thing by specifying this number in the
3956     * LayoutParams.
3957     *
3958     * @see #setMaxWidth(int)
3959     * @see #setMinWidth(int)
3960     * @see #getMinWidth()
3961     * @see #getMaxWidth()
3962     *
3963     * @attr ref android.R.styleable#TextView_width
3964     */
3965    @android.view.RemotableViewMethod
3966    public void setWidth(int pixels) {
3967        mMaxWidth = mMinWidth = pixels;
3968        mMaxWidthMode = mMinWidthMode = PIXELS;
3969
3970        requestLayout();
3971        invalidate();
3972    }
3973
3974    /**
3975     * Sets line spacing for this TextView.  Each line will have its height
3976     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3977     *
3978     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3979     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3980     */
3981    public void setLineSpacing(float add, float mult) {
3982        if (mSpacingAdd != add || mSpacingMult != mult) {
3983            mSpacingAdd = add;
3984            mSpacingMult = mult;
3985
3986            if (mLayout != null) {
3987                nullLayouts();
3988                requestLayout();
3989                invalidate();
3990            }
3991        }
3992    }
3993
3994    /**
3995     * Gets the line spacing multiplier
3996     *
3997     * @return the value by which each line's height is multiplied to get its actual height.
3998     *
3999     * @see #setLineSpacing(float, float)
4000     * @see #getLineSpacingExtra()
4001     *
4002     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
4003     */
4004    public float getLineSpacingMultiplier() {
4005        return mSpacingMult;
4006    }
4007
4008    /**
4009     * Gets the line spacing extra space
4010     *
4011     * @return the extra space that is added to the height of each lines of this TextView.
4012     *
4013     * @see #setLineSpacing(float, float)
4014     * @see #getLineSpacingMultiplier()
4015     *
4016     * @attr ref android.R.styleable#TextView_lineSpacingExtra
4017     */
4018    public float getLineSpacingExtra() {
4019        return mSpacingAdd;
4020    }
4021
4022    /**
4023     * Convenience method: Append the specified text to the TextView's
4024     * display buffer, upgrading it to BufferType.EDITABLE if it was
4025     * not already editable.
4026     */
4027    public final void append(CharSequence text) {
4028        append(text, 0, text.length());
4029    }
4030
4031    /**
4032     * Convenience method: Append the specified text slice to the TextView's
4033     * display buffer, upgrading it to BufferType.EDITABLE if it was
4034     * not already editable.
4035     */
4036    public void append(CharSequence text, int start, int end) {
4037        if (!(mText instanceof Editable)) {
4038            setText(mText, BufferType.EDITABLE);
4039        }
4040
4041        ((Editable) mText).append(text, start, end);
4042
4043        if (mAutoLinkMask != 0) {
4044            boolean linksWereAdded = Linkify.addLinks((Spannable) mText, mAutoLinkMask);
4045            // Do not change the movement method for text that support text selection as it
4046            // would prevent an arbitrary cursor displacement.
4047            if (linksWereAdded && mLinksClickable && !textCanBeSelected()) {
4048                setMovementMethod(LinkMovementMethod.getInstance());
4049            }
4050        }
4051    }
4052
4053    private void updateTextColors() {
4054        boolean inval = false;
4055        int color = mTextColor.getColorForState(getDrawableState(), 0);
4056        if (color != mCurTextColor) {
4057            mCurTextColor = color;
4058            inval = true;
4059        }
4060        if (mLinkTextColor != null) {
4061            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
4062            if (color != mTextPaint.linkColor) {
4063                mTextPaint.linkColor = color;
4064                inval = true;
4065            }
4066        }
4067        if (mHintTextColor != null) {
4068            color = mHintTextColor.getColorForState(getDrawableState(), 0);
4069            if (color != mCurHintTextColor) {
4070                mCurHintTextColor = color;
4071                if (mText.length() == 0) {
4072                    inval = true;
4073                }
4074            }
4075        }
4076        if (inval) {
4077            // Text needs to be redrawn with the new color
4078            if (mEditor != null) mEditor.invalidateTextDisplayList();
4079            invalidate();
4080        }
4081    }
4082
4083    @Override
4084    protected void drawableStateChanged() {
4085        super.drawableStateChanged();
4086
4087        if (mTextColor != null && mTextColor.isStateful()
4088                || (mHintTextColor != null && mHintTextColor.isStateful())
4089                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
4090            updateTextColors();
4091        }
4092
4093        if (mDrawables != null) {
4094            final int[] state = getDrawableState();
4095            for (Drawable dr : mDrawables.mShowing) {
4096                if (dr != null && dr.isStateful() && dr.setState(state)) {
4097                    invalidateDrawable(dr);
4098                }
4099            }
4100        }
4101    }
4102
4103    @Override
4104    public void drawableHotspotChanged(float x, float y) {
4105        super.drawableHotspotChanged(x, y);
4106
4107        if (mDrawables != null) {
4108            for (Drawable dr : mDrawables.mShowing) {
4109                if (dr != null) {
4110                    dr.setHotspot(x, y);
4111                }
4112            }
4113        }
4114    }
4115
4116    @Override
4117    public Parcelable onSaveInstanceState() {
4118        Parcelable superState = super.onSaveInstanceState();
4119
4120        // Save state if we are forced to
4121        final boolean freezesText = getFreezesText();
4122        boolean hasSelection = false;
4123        int start = -1;
4124        int end = -1;
4125
4126        if (mText != null) {
4127            start = getSelectionStart();
4128            end = getSelectionEnd();
4129            if (start >= 0 || end >= 0) {
4130                // Or save state if there is a selection
4131                hasSelection = true;
4132            }
4133        }
4134
4135        if (freezesText || hasSelection) {
4136            SavedState ss = new SavedState(superState);
4137
4138            if (freezesText) {
4139                if (mText instanceof Spanned) {
4140                    final Spannable sp = new SpannableStringBuilder(mText);
4141
4142                    if (mEditor != null) {
4143                        removeMisspelledSpans(sp);
4144                        sp.removeSpan(mEditor.mSuggestionRangeSpan);
4145                    }
4146
4147                    ss.text = sp;
4148                } else {
4149                    ss.text = mText.toString();
4150                }
4151            }
4152
4153            if (hasSelection) {
4154                // XXX Should also save the current scroll position!
4155                ss.selStart = start;
4156                ss.selEnd = end;
4157            }
4158
4159            if (isFocused() && start >= 0 && end >= 0) {
4160                ss.frozenWithFocus = true;
4161            }
4162
4163            ss.error = getError();
4164
4165            if (mEditor != null) {
4166                ss.editorState = mEditor.saveInstanceState();
4167            }
4168            return ss;
4169        }
4170
4171        return superState;
4172    }
4173
4174    void removeMisspelledSpans(Spannable spannable) {
4175        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
4176                SuggestionSpan.class);
4177        for (int i = 0; i < suggestionSpans.length; i++) {
4178            int flags = suggestionSpans[i].getFlags();
4179            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
4180                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
4181                spannable.removeSpan(suggestionSpans[i]);
4182            }
4183        }
4184    }
4185
4186    @Override
4187    public void onRestoreInstanceState(Parcelable state) {
4188        if (!(state instanceof SavedState)) {
4189            super.onRestoreInstanceState(state);
4190            return;
4191        }
4192
4193        SavedState ss = (SavedState)state;
4194        super.onRestoreInstanceState(ss.getSuperState());
4195
4196        // XXX restore buffer type too, as well as lots of other stuff
4197        if (ss.text != null) {
4198            setText(ss.text);
4199        }
4200
4201        if (ss.selStart >= 0 && ss.selEnd >= 0) {
4202            if (mText instanceof Spannable) {
4203                int len = mText.length();
4204
4205                if (ss.selStart > len || ss.selEnd > len) {
4206                    String restored = "";
4207
4208                    if (ss.text != null) {
4209                        restored = "(restored) ";
4210                    }
4211
4212                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
4213                          "/" + ss.selEnd + " out of range for " + restored +
4214                          "text " + mText);
4215                } else {
4216                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
4217
4218                    if (ss.frozenWithFocus) {
4219                        createEditorIfNeeded();
4220                        mEditor.mFrozenWithFocus = true;
4221                    }
4222                }
4223            }
4224        }
4225
4226        if (ss.error != null) {
4227            final CharSequence error = ss.error;
4228            // Display the error later, after the first layout pass
4229            post(new Runnable() {
4230                public void run() {
4231                    if (mEditor == null || !mEditor.mErrorWasChanged) {
4232                        setError(error);
4233                    }
4234                }
4235            });
4236        }
4237
4238        if (ss.editorState != null) {
4239            createEditorIfNeeded();
4240            mEditor.restoreInstanceState(ss.editorState);
4241        }
4242    }
4243
4244    /**
4245     * Control whether this text view saves its entire text contents when
4246     * freezing to an icicle, in addition to dynamic state such as cursor
4247     * position.  By default this is false, not saving the text.  Set to true
4248     * if the text in the text view is not being saved somewhere else in
4249     * persistent storage (such as in a content provider) so that if the
4250     * view is later thawed the user will not lose their data. For
4251     * {@link android.widget.EditText} it is always enabled, regardless of
4252     * the value of the attribute.
4253     *
4254     * @param freezesText Controls whether a frozen icicle should include the
4255     * entire text data: true to include it, false to not.
4256     *
4257     * @attr ref android.R.styleable#TextView_freezesText
4258     */
4259    @android.view.RemotableViewMethod
4260    public void setFreezesText(boolean freezesText) {
4261        mFreezesText = freezesText;
4262    }
4263
4264    /**
4265     * Return whether this text view is including its entire text contents
4266     * in frozen icicles. For {@link android.widget.EditText} it always returns true.
4267     *
4268     * @return Returns true if text is included, false if it isn't.
4269     *
4270     * @see #setFreezesText
4271     */
4272    public boolean getFreezesText() {
4273        return mFreezesText;
4274    }
4275
4276    ///////////////////////////////////////////////////////////////////////////
4277
4278    /**
4279     * Sets the Factory used to create new Editables.
4280     */
4281    public final void setEditableFactory(Editable.Factory factory) {
4282        mEditableFactory = factory;
4283        setText(mText);
4284    }
4285
4286    /**
4287     * Sets the Factory used to create new Spannables.
4288     */
4289    public final void setSpannableFactory(Spannable.Factory factory) {
4290        mSpannableFactory = factory;
4291        setText(mText);
4292    }
4293
4294    /**
4295     * Sets the string value of the TextView. TextView <em>does not</em> accept
4296     * HTML-like formatting, which you can do with text strings in XML resource files.
4297     * To style your strings, attach android.text.style.* objects to a
4298     * {@link android.text.SpannableString SpannableString}, or see the
4299     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
4300     * Available Resource Types</a> documentation for an example of setting
4301     * formatted text in the XML resource file.
4302     *
4303     * @attr ref android.R.styleable#TextView_text
4304     */
4305    @android.view.RemotableViewMethod
4306    public final void setText(CharSequence text) {
4307        setText(text, mBufferType);
4308    }
4309
4310    /**
4311     * Like {@link #setText(CharSequence)},
4312     * except that the cursor position (if any) is retained in the new text.
4313     *
4314     * @param text The new text to place in the text view.
4315     *
4316     * @see #setText(CharSequence)
4317     */
4318    @android.view.RemotableViewMethod
4319    public final void setTextKeepState(CharSequence text) {
4320        setTextKeepState(text, mBufferType);
4321    }
4322
4323    /**
4324     * Sets the text that this TextView is to display (see
4325     * {@link #setText(CharSequence)}) and also sets whether it is stored
4326     * in a styleable/spannable buffer and whether it is editable.
4327     *
4328     * @attr ref android.R.styleable#TextView_text
4329     * @attr ref android.R.styleable#TextView_bufferType
4330     */
4331    public void setText(CharSequence text, BufferType type) {
4332        setText(text, type, true, 0);
4333
4334        if (mCharWrapper != null) {
4335            mCharWrapper.mChars = null;
4336        }
4337    }
4338
4339    private void setText(CharSequence text, BufferType type,
4340                         boolean notifyBefore, int oldlen) {
4341        if (text == null) {
4342            text = "";
4343        }
4344
4345        // If suggestions are not enabled, remove the suggestion spans from the text
4346        if (!isSuggestionsEnabled()) {
4347            text = removeSuggestionSpans(text);
4348        }
4349
4350        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
4351
4352        if (text instanceof Spanned &&
4353            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
4354            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
4355                setHorizontalFadingEdgeEnabled(true);
4356                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
4357            } else {
4358                setHorizontalFadingEdgeEnabled(false);
4359                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
4360            }
4361            setEllipsize(TextUtils.TruncateAt.MARQUEE);
4362        }
4363
4364        int n = mFilters.length;
4365        for (int i = 0; i < n; i++) {
4366            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
4367            if (out != null) {
4368                text = out;
4369            }
4370        }
4371
4372        if (notifyBefore) {
4373            if (mText != null) {
4374                oldlen = mText.length();
4375                sendBeforeTextChanged(mText, 0, oldlen, text.length());
4376            } else {
4377                sendBeforeTextChanged("", 0, 0, text.length());
4378            }
4379        }
4380
4381        boolean needEditableForNotification = false;
4382
4383        if (mListeners != null && mListeners.size() != 0) {
4384            needEditableForNotification = true;
4385        }
4386
4387        if (type == BufferType.EDITABLE || getKeyListener() != null ||
4388                needEditableForNotification) {
4389            createEditorIfNeeded();
4390            mEditor.forgetUndoRedo();
4391            Editable t = mEditableFactory.newEditable(text);
4392            text = t;
4393            setFilters(t, mFilters);
4394            InputMethodManager imm = InputMethodManager.peekInstance();
4395            if (imm != null) imm.restartInput(this);
4396        } else if (type == BufferType.SPANNABLE || mMovement != null) {
4397            text = mSpannableFactory.newSpannable(text);
4398        } else if (!(text instanceof CharWrapper)) {
4399            text = TextUtils.stringOrSpannedString(text);
4400        }
4401
4402        if (mAutoLinkMask != 0) {
4403            Spannable s2;
4404
4405            if (type == BufferType.EDITABLE || text instanceof Spannable) {
4406                s2 = (Spannable) text;
4407            } else {
4408                s2 = mSpannableFactory.newSpannable(text);
4409            }
4410
4411            if (Linkify.addLinks(s2, mAutoLinkMask)) {
4412                text = s2;
4413                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
4414
4415                /*
4416                 * We must go ahead and set the text before changing the
4417                 * movement method, because setMovementMethod() may call
4418                 * setText() again to try to upgrade the buffer type.
4419                 */
4420                mText = text;
4421
4422                // Do not change the movement method for text that support text selection as it
4423                // would prevent an arbitrary cursor displacement.
4424                if (mLinksClickable && !textCanBeSelected()) {
4425                    setMovementMethod(LinkMovementMethod.getInstance());
4426                }
4427            }
4428        }
4429
4430        mBufferType = type;
4431        mText = text;
4432
4433        if (mTransformation == null) {
4434            mTransformed = text;
4435        } else {
4436            mTransformed = mTransformation.getTransformation(text, this);
4437        }
4438
4439        final int textLength = text.length();
4440
4441        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
4442            Spannable sp = (Spannable) text;
4443
4444            // Remove any ChangeWatchers that might have come from other TextViews.
4445            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
4446            final int count = watchers.length;
4447            for (int i = 0; i < count; i++) {
4448                sp.removeSpan(watchers[i]);
4449            }
4450
4451            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
4452
4453            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
4454                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
4455
4456            if (mEditor != null) mEditor.addSpanWatchers(sp);
4457
4458            if (mTransformation != null) {
4459                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
4460            }
4461
4462            if (mMovement != null) {
4463                mMovement.initialize(this, (Spannable) text);
4464
4465                /*
4466                 * Initializing the movement method will have set the
4467                 * selection, so reset mSelectionMoved to keep that from
4468                 * interfering with the normal on-focus selection-setting.
4469                 */
4470                if (mEditor != null) mEditor.mSelectionMoved = false;
4471            }
4472        }
4473
4474        if (mLayout != null) {
4475            checkForRelayout();
4476        }
4477
4478        sendOnTextChanged(text, 0, oldlen, textLength);
4479        onTextChanged(text, 0, oldlen, textLength);
4480
4481        notifyViewAccessibilityStateChangedIfNeeded(AccessibilityEvent.CONTENT_CHANGE_TYPE_TEXT);
4482
4483        if (needEditableForNotification) {
4484            sendAfterTextChanged((Editable) text);
4485        }
4486
4487        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
4488        if (mEditor != null) mEditor.prepareCursorControllers();
4489    }
4490
4491    /**
4492     * Sets the TextView to display the specified slice of the specified
4493     * char array.  You must promise that you will not change the contents
4494     * of the array except for right before another call to setText(),
4495     * since the TextView has no way to know that the text
4496     * has changed and that it needs to invalidate and re-layout.
4497     */
4498    public final void setText(char[] text, int start, int len) {
4499        int oldlen = 0;
4500
4501        if (start < 0 || len < 0 || start + len > text.length) {
4502            throw new IndexOutOfBoundsException(start + ", " + len);
4503        }
4504
4505        /*
4506         * We must do the before-notification here ourselves because if
4507         * the old text is a CharWrapper we destroy it before calling
4508         * into the normal path.
4509         */
4510        if (mText != null) {
4511            oldlen = mText.length();
4512            sendBeforeTextChanged(mText, 0, oldlen, len);
4513        } else {
4514            sendBeforeTextChanged("", 0, 0, len);
4515        }
4516
4517        if (mCharWrapper == null) {
4518            mCharWrapper = new CharWrapper(text, start, len);
4519        } else {
4520            mCharWrapper.set(text, start, len);
4521        }
4522
4523        setText(mCharWrapper, mBufferType, false, oldlen);
4524    }
4525
4526    /**
4527     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
4528     * except that the cursor position (if any) is retained in the new text.
4529     *
4530     * @see #setText(CharSequence, android.widget.TextView.BufferType)
4531     */
4532    public final void setTextKeepState(CharSequence text, BufferType type) {
4533        int start = getSelectionStart();
4534        int end = getSelectionEnd();
4535        int len = text.length();
4536
4537        setText(text, type);
4538
4539        if (start >= 0 || end >= 0) {
4540            if (mText instanceof Spannable) {
4541                Selection.setSelection((Spannable) mText,
4542                                       Math.max(0, Math.min(start, len)),
4543                                       Math.max(0, Math.min(end, len)));
4544            }
4545        }
4546    }
4547
4548    @android.view.RemotableViewMethod
4549    public final void setText(@StringRes int resid) {
4550        setText(getContext().getResources().getText(resid));
4551    }
4552
4553    public final void setText(@StringRes int resid, BufferType type) {
4554        setText(getContext().getResources().getText(resid), type);
4555    }
4556
4557    /**
4558     * Sets the text to be displayed when the text of the TextView is empty.
4559     * Null means to use the normal empty text. The hint does not currently
4560     * participate in determining the size of the view.
4561     *
4562     * @attr ref android.R.styleable#TextView_hint
4563     */
4564    @android.view.RemotableViewMethod
4565    public final void setHint(CharSequence hint) {
4566        mHint = TextUtils.stringOrSpannedString(hint);
4567
4568        if (mLayout != null) {
4569            checkForRelayout();
4570        }
4571
4572        if (mText.length() == 0) {
4573            invalidate();
4574        }
4575
4576        // Invalidate display list if hint is currently used
4577        if (mEditor != null && mText.length() == 0 && mHint != null) {
4578            mEditor.invalidateTextDisplayList();
4579        }
4580    }
4581
4582    /**
4583     * Sets the text to be displayed when the text of the TextView is empty,
4584     * from a resource.
4585     *
4586     * @attr ref android.R.styleable#TextView_hint
4587     */
4588    @android.view.RemotableViewMethod
4589    public final void setHint(@StringRes int resid) {
4590        setHint(getContext().getResources().getText(resid));
4591    }
4592
4593    /**
4594     * Returns the hint that is displayed when the text of the TextView
4595     * is empty.
4596     *
4597     * @attr ref android.R.styleable#TextView_hint
4598     */
4599    @ViewDebug.CapturedViewProperty
4600    public CharSequence getHint() {
4601        return mHint;
4602    }
4603
4604    boolean isSingleLine() {
4605        return mSingleLine;
4606    }
4607
4608    private static boolean isMultilineInputType(int type) {
4609        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
4610            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
4611    }
4612
4613    /**
4614     * Removes the suggestion spans.
4615     */
4616    CharSequence removeSuggestionSpans(CharSequence text) {
4617       if (text instanceof Spanned) {
4618           Spannable spannable;
4619           if (text instanceof Spannable) {
4620               spannable = (Spannable) text;
4621           } else {
4622               spannable = new SpannableString(text);
4623               text = spannable;
4624           }
4625
4626           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
4627           for (int i = 0; i < spans.length; i++) {
4628               spannable.removeSpan(spans[i]);
4629           }
4630       }
4631       return text;
4632    }
4633
4634    /**
4635     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
4636     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
4637     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
4638     * then a soft keyboard will not be displayed for this text view.
4639     *
4640     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
4641     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
4642     * type.
4643     *
4644     * @see #getInputType()
4645     * @see #setRawInputType(int)
4646     * @see android.text.InputType
4647     * @attr ref android.R.styleable#TextView_inputType
4648     */
4649    public void setInputType(int type) {
4650        final boolean wasPassword = isPasswordInputType(getInputType());
4651        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
4652        setInputType(type, false);
4653        final boolean isPassword = isPasswordInputType(type);
4654        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
4655        boolean forceUpdate = false;
4656        if (isPassword) {
4657            setTransformationMethod(PasswordTransformationMethod.getInstance());
4658            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4659        } else if (isVisiblePassword) {
4660            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4661                forceUpdate = true;
4662            }
4663            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4664        } else if (wasPassword || wasVisiblePassword) {
4665            // not in password mode, clean up typeface and transformation
4666            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
4667            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4668                forceUpdate = true;
4669            }
4670        }
4671
4672        boolean singleLine = !isMultilineInputType(type);
4673
4674        // We need to update the single line mode if it has changed or we
4675        // were previously in password mode.
4676        if (mSingleLine != singleLine || forceUpdate) {
4677            // Change single line mode, but only change the transformation if
4678            // we are not in password mode.
4679            applySingleLine(singleLine, !isPassword, true);
4680        }
4681
4682        if (!isSuggestionsEnabled()) {
4683            mText = removeSuggestionSpans(mText);
4684        }
4685
4686        InputMethodManager imm = InputMethodManager.peekInstance();
4687        if (imm != null) imm.restartInput(this);
4688    }
4689
4690    /**
4691     * It would be better to rely on the input type for everything. A password inputType should have
4692     * a password transformation. We should hence use isPasswordInputType instead of this method.
4693     *
4694     * We should:
4695     * - Call setInputType in setKeyListener instead of changing the input type directly (which
4696     * would install the correct transformation).
4697     * - Refuse the installation of a non-password transformation in setTransformation if the input
4698     * type is password.
4699     *
4700     * However, this is like this for legacy reasons and we cannot break existing apps. This method
4701     * is useful since it matches what the user can see (obfuscated text or not).
4702     *
4703     * @return true if the current transformation method is of the password type.
4704     */
4705    boolean hasPasswordTransformationMethod() {
4706        return mTransformation instanceof PasswordTransformationMethod;
4707    }
4708
4709    private static boolean isPasswordInputType(int inputType) {
4710        final int variation =
4711                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4712        return variation
4713                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
4714                || variation
4715                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
4716                || variation
4717                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
4718    }
4719
4720    private static boolean isVisiblePasswordInputType(int inputType) {
4721        final int variation =
4722                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4723        return variation
4724                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
4725    }
4726
4727    /**
4728     * Directly change the content type integer of the text view, without
4729     * modifying any other state.
4730     * @see #setInputType(int)
4731     * @see android.text.InputType
4732     * @attr ref android.R.styleable#TextView_inputType
4733     */
4734    public void setRawInputType(int type) {
4735        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
4736        createEditorIfNeeded();
4737        mEditor.mInputType = type;
4738    }
4739
4740    private void setInputType(int type, boolean direct) {
4741        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
4742        KeyListener input;
4743        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
4744            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
4745            TextKeyListener.Capitalize cap;
4746            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
4747                cap = TextKeyListener.Capitalize.CHARACTERS;
4748            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
4749                cap = TextKeyListener.Capitalize.WORDS;
4750            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
4751                cap = TextKeyListener.Capitalize.SENTENCES;
4752            } else {
4753                cap = TextKeyListener.Capitalize.NONE;
4754            }
4755            input = TextKeyListener.getInstance(autotext, cap);
4756        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
4757            input = DigitsKeyListener.getInstance(
4758                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
4759                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
4760        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
4761            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
4762                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
4763                    input = DateKeyListener.getInstance();
4764                    break;
4765                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
4766                    input = TimeKeyListener.getInstance();
4767                    break;
4768                default:
4769                    input = DateTimeKeyListener.getInstance();
4770                    break;
4771            }
4772        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
4773            input = DialerKeyListener.getInstance();
4774        } else {
4775            input = TextKeyListener.getInstance();
4776        }
4777        setRawInputType(type);
4778        if (direct) {
4779            createEditorIfNeeded();
4780            mEditor.mKeyListener = input;
4781        } else {
4782            setKeyListenerOnly(input);
4783        }
4784    }
4785
4786    /**
4787     * Get the type of the editable content.
4788     *
4789     * @see #setInputType(int)
4790     * @see android.text.InputType
4791     */
4792    public int getInputType() {
4793        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
4794    }
4795
4796    /**
4797     * Change the editor type integer associated with the text view, which
4798     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
4799     * has focus.
4800     * @see #getImeOptions
4801     * @see android.view.inputmethod.EditorInfo
4802     * @attr ref android.R.styleable#TextView_imeOptions
4803     */
4804    public void setImeOptions(int imeOptions) {
4805        createEditorIfNeeded();
4806        mEditor.createInputContentTypeIfNeeded();
4807        mEditor.mInputContentType.imeOptions = imeOptions;
4808    }
4809
4810    /**
4811     * Get the type of the IME editor.
4812     *
4813     * @see #setImeOptions(int)
4814     * @see android.view.inputmethod.EditorInfo
4815     */
4816    public int getImeOptions() {
4817        return mEditor != null && mEditor.mInputContentType != null
4818                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
4819    }
4820
4821    /**
4822     * Change the custom IME action associated with the text view, which
4823     * will be reported to an IME with {@link EditorInfo#actionLabel}
4824     * and {@link EditorInfo#actionId} when it has focus.
4825     * @see #getImeActionLabel
4826     * @see #getImeActionId
4827     * @see android.view.inputmethod.EditorInfo
4828     * @attr ref android.R.styleable#TextView_imeActionLabel
4829     * @attr ref android.R.styleable#TextView_imeActionId
4830     */
4831    public void setImeActionLabel(CharSequence label, int actionId) {
4832        createEditorIfNeeded();
4833        mEditor.createInputContentTypeIfNeeded();
4834        mEditor.mInputContentType.imeActionLabel = label;
4835        mEditor.mInputContentType.imeActionId = actionId;
4836    }
4837
4838    /**
4839     * Get the IME action label previous set with {@link #setImeActionLabel}.
4840     *
4841     * @see #setImeActionLabel
4842     * @see android.view.inputmethod.EditorInfo
4843     */
4844    public CharSequence getImeActionLabel() {
4845        return mEditor != null && mEditor.mInputContentType != null
4846                ? mEditor.mInputContentType.imeActionLabel : null;
4847    }
4848
4849    /**
4850     * Get the IME action ID previous set with {@link #setImeActionLabel}.
4851     *
4852     * @see #setImeActionLabel
4853     * @see android.view.inputmethod.EditorInfo
4854     */
4855    public int getImeActionId() {
4856        return mEditor != null && mEditor.mInputContentType != null
4857                ? mEditor.mInputContentType.imeActionId : 0;
4858    }
4859
4860    /**
4861     * Set a special listener to be called when an action is performed
4862     * on the text view.  This will be called when the enter key is pressed,
4863     * or when an action supplied to the IME is selected by the user.  Setting
4864     * this means that the normal hard key event will not insert a newline
4865     * into the text view, even if it is multi-line; holding down the ALT
4866     * modifier will, however, allow the user to insert a newline character.
4867     */
4868    public void setOnEditorActionListener(OnEditorActionListener l) {
4869        createEditorIfNeeded();
4870        mEditor.createInputContentTypeIfNeeded();
4871        mEditor.mInputContentType.onEditorActionListener = l;
4872    }
4873
4874    /**
4875     * Called when an attached input method calls
4876     * {@link InputConnection#performEditorAction(int)
4877     * InputConnection.performEditorAction()}
4878     * for this text view.  The default implementation will call your action
4879     * listener supplied to {@link #setOnEditorActionListener}, or perform
4880     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
4881     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
4882     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
4883     * EditorInfo.IME_ACTION_DONE}.
4884     *
4885     * <p>For backwards compatibility, if no IME options have been set and the
4886     * text view would not normally advance focus on enter, then
4887     * the NEXT and DONE actions received here will be turned into an enter
4888     * key down/up pair to go through the normal key handling.
4889     *
4890     * @param actionCode The code of the action being performed.
4891     *
4892     * @see #setOnEditorActionListener
4893     */
4894    public void onEditorAction(int actionCode) {
4895        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
4896        if (ict != null) {
4897            if (ict.onEditorActionListener != null) {
4898                if (ict.onEditorActionListener.onEditorAction(this,
4899                        actionCode, null)) {
4900                    return;
4901                }
4902            }
4903
4904            // This is the handling for some default action.
4905            // Note that for backwards compatibility we don't do this
4906            // default handling if explicit ime options have not been given,
4907            // instead turning this into the normal enter key codes that an
4908            // app may be expecting.
4909            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
4910                View v = focusSearch(FOCUS_FORWARD);
4911                if (v != null) {
4912                    if (!v.requestFocus(FOCUS_FORWARD)) {
4913                        throw new IllegalStateException("focus search returned a view " +
4914                                "that wasn't able to take focus!");
4915                    }
4916                }
4917                return;
4918
4919            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4920                View v = focusSearch(FOCUS_BACKWARD);
4921                if (v != null) {
4922                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4923                        throw new IllegalStateException("focus search returned a view " +
4924                                "that wasn't able to take focus!");
4925                    }
4926                }
4927                return;
4928
4929            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4930                InputMethodManager imm = InputMethodManager.peekInstance();
4931                if (imm != null && imm.isActive(this)) {
4932                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4933                }
4934                return;
4935            }
4936        }
4937
4938        ViewRootImpl viewRootImpl = getViewRootImpl();
4939        if (viewRootImpl != null) {
4940            long eventTime = SystemClock.uptimeMillis();
4941            viewRootImpl.dispatchKeyFromIme(
4942                    new KeyEvent(eventTime, eventTime,
4943                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4944                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4945                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4946                    | KeyEvent.FLAG_EDITOR_ACTION));
4947            viewRootImpl.dispatchKeyFromIme(
4948                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4949                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4950                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4951                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4952                    | KeyEvent.FLAG_EDITOR_ACTION));
4953        }
4954    }
4955
4956    /**
4957     * Set the private content type of the text, which is the
4958     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4959     * field that will be filled in when creating an input connection.
4960     *
4961     * @see #getPrivateImeOptions()
4962     * @see EditorInfo#privateImeOptions
4963     * @attr ref android.R.styleable#TextView_privateImeOptions
4964     */
4965    public void setPrivateImeOptions(String type) {
4966        createEditorIfNeeded();
4967        mEditor.createInputContentTypeIfNeeded();
4968        mEditor.mInputContentType.privateImeOptions = type;
4969    }
4970
4971    /**
4972     * Get the private type of the content.
4973     *
4974     * @see #setPrivateImeOptions(String)
4975     * @see EditorInfo#privateImeOptions
4976     */
4977    public String getPrivateImeOptions() {
4978        return mEditor != null && mEditor.mInputContentType != null
4979                ? mEditor.mInputContentType.privateImeOptions : null;
4980    }
4981
4982    /**
4983     * Set the extra input data of the text, which is the
4984     * {@link EditorInfo#extras TextBoxAttribute.extras}
4985     * Bundle that will be filled in when creating an input connection.  The
4986     * given integer is the resource ID of an XML resource holding an
4987     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4988     *
4989     * @see #getInputExtras(boolean)
4990     * @see EditorInfo#extras
4991     * @attr ref android.R.styleable#TextView_editorExtras
4992     */
4993    public void setInputExtras(@XmlRes int xmlResId) throws XmlPullParserException, IOException {
4994        createEditorIfNeeded();
4995        XmlResourceParser parser = getResources().getXml(xmlResId);
4996        mEditor.createInputContentTypeIfNeeded();
4997        mEditor.mInputContentType.extras = new Bundle();
4998        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4999    }
5000
5001    /**
5002     * Retrieve the input extras currently associated with the text view, which
5003     * can be viewed as well as modified.
5004     *
5005     * @param create If true, the extras will be created if they don't already
5006     * exist.  Otherwise, null will be returned if none have been created.
5007     * @see #setInputExtras(int)
5008     * @see EditorInfo#extras
5009     * @attr ref android.R.styleable#TextView_editorExtras
5010     */
5011    public Bundle getInputExtras(boolean create) {
5012        if (mEditor == null && !create) return null;
5013        createEditorIfNeeded();
5014        if (mEditor.mInputContentType == null) {
5015            if (!create) return null;
5016            mEditor.createInputContentTypeIfNeeded();
5017        }
5018        if (mEditor.mInputContentType.extras == null) {
5019            if (!create) return null;
5020            mEditor.mInputContentType.extras = new Bundle();
5021        }
5022        return mEditor.mInputContentType.extras;
5023    }
5024
5025    /**
5026     * Change "hint" locales associated with the text view, which will be reported to an IME with
5027     * {@link EditorInfo#hintLocales} when it has focus.
5028     *
5029     * <p><strong>Note:</strong> If you want new "hint" to take effect immediately you need to
5030     * call {@link InputMethodManager#restartInput(View)}.</p>
5031     * @param hintLocales List of the languages that the user is supposed to switch to no matter
5032     * what input method subtype is currently used. Set {@code null} to clear the current "hint".
5033     * @see #getImeHIntLocales()
5034     * @see android.view.inputmethod.EditorInfo#hintLocales
5035     */
5036    public void setImeHintLocales(@Nullable LocaleList hintLocales) {
5037        createEditorIfNeeded();
5038        mEditor.createInputContentTypeIfNeeded();
5039        mEditor.mInputContentType.imeHintLocales = hintLocales;
5040    }
5041
5042    /**
5043     * @return The current languages list "hint". {@code null} when no "hint" is available.
5044     * @see #setImeHintLocales(LocaleList)
5045     * @see android.view.inputmethod.EditorInfo#hintLocales
5046     */
5047    @Nullable
5048    public LocaleList getImeHintLocales() {
5049        if (mEditor == null) { return null; }
5050        if (mEditor.mInputContentType == null) { return null; }
5051        return mEditor.mInputContentType.imeHintLocales;
5052    }
5053
5054    /**
5055     * Returns the error message that was set to be displayed with
5056     * {@link #setError}, or <code>null</code> if no error was set
5057     * or if it the error was cleared by the widget after user input.
5058     */
5059    public CharSequence getError() {
5060        return mEditor == null ? null : mEditor.mError;
5061    }
5062
5063    /**
5064     * Sets the right-hand compound drawable of the TextView to the "error"
5065     * icon and sets an error message that will be displayed in a popup when
5066     * the TextView has focus.  The icon and error message will be reset to
5067     * null when any key events cause changes to the TextView's text.  If the
5068     * <code>error</code> is <code>null</code>, the error message and icon
5069     * will be cleared.
5070     */
5071    @android.view.RemotableViewMethod
5072    public void setError(CharSequence error) {
5073        if (error == null) {
5074            setError(null, null);
5075        } else {
5076            Drawable dr = getContext().getDrawable(
5077                    com.android.internal.R.drawable.indicator_input_error);
5078
5079            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
5080            setError(error, dr);
5081        }
5082    }
5083
5084    /**
5085     * Sets the right-hand compound drawable of the TextView to the specified
5086     * icon and sets an error message that will be displayed in a popup when
5087     * the TextView has focus.  The icon and error message will be reset to
5088     * null when any key events cause changes to the TextView's text.  The
5089     * drawable must already have had {@link Drawable#setBounds} set on it.
5090     * If the <code>error</code> is <code>null</code>, the error message will
5091     * be cleared (and you should provide a <code>null</code> icon as well).
5092     */
5093    public void setError(CharSequence error, Drawable icon) {
5094        createEditorIfNeeded();
5095        mEditor.setError(error, icon);
5096        notifyViewAccessibilityStateChangedIfNeeded(
5097                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
5098    }
5099
5100    @Override
5101    protected boolean setFrame(int l, int t, int r, int b) {
5102        boolean result = super.setFrame(l, t, r, b);
5103
5104        if (mEditor != null) mEditor.setFrame();
5105
5106        restartMarqueeIfNeeded();
5107
5108        return result;
5109    }
5110
5111    private void restartMarqueeIfNeeded() {
5112        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5113            mRestartMarquee = false;
5114            startMarquee();
5115        }
5116    }
5117
5118    /**
5119     * Sets the list of input filters that will be used if the buffer is
5120     * Editable. Has no effect otherwise.
5121     *
5122     * @attr ref android.R.styleable#TextView_maxLength
5123     */
5124    public void setFilters(InputFilter[] filters) {
5125        if (filters == null) {
5126            throw new IllegalArgumentException();
5127        }
5128
5129        mFilters = filters;
5130
5131        if (mText instanceof Editable) {
5132            setFilters((Editable) mText, filters);
5133        }
5134    }
5135
5136    /**
5137     * Sets the list of input filters on the specified Editable,
5138     * and includes mInput in the list if it is an InputFilter.
5139     */
5140    private void setFilters(Editable e, InputFilter[] filters) {
5141        if (mEditor != null) {
5142            final boolean undoFilter = mEditor.mUndoInputFilter != null;
5143            final boolean keyFilter = mEditor.mKeyListener instanceof InputFilter;
5144            int num = 0;
5145            if (undoFilter) num++;
5146            if (keyFilter) num++;
5147            if (num > 0) {
5148                InputFilter[] nf = new InputFilter[filters.length + num];
5149
5150                System.arraycopy(filters, 0, nf, 0, filters.length);
5151                num = 0;
5152                if (undoFilter) {
5153                    nf[filters.length] = mEditor.mUndoInputFilter;
5154                    num++;
5155                }
5156                if (keyFilter) {
5157                    nf[filters.length + num] = (InputFilter) mEditor.mKeyListener;
5158                }
5159
5160                e.setFilters(nf);
5161                return;
5162            }
5163        }
5164        e.setFilters(filters);
5165    }
5166
5167    /**
5168     * Returns the current list of input filters.
5169     *
5170     * @attr ref android.R.styleable#TextView_maxLength
5171     */
5172    public InputFilter[] getFilters() {
5173        return mFilters;
5174    }
5175
5176    /////////////////////////////////////////////////////////////////////////
5177
5178    private int getBoxHeight(Layout l) {
5179        Insets opticalInsets = isLayoutModeOptical(mParent) ? getOpticalInsets() : Insets.NONE;
5180        int padding = (l == mHintLayout) ?
5181                getCompoundPaddingTop() + getCompoundPaddingBottom() :
5182                getExtendedPaddingTop() + getExtendedPaddingBottom();
5183        return getMeasuredHeight() - padding + opticalInsets.top + opticalInsets.bottom;
5184    }
5185
5186    int getVerticalOffset(boolean forceNormal) {
5187        int voffset = 0;
5188        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5189
5190        Layout l = mLayout;
5191        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5192            l = mHintLayout;
5193        }
5194
5195        if (gravity != Gravity.TOP) {
5196            int boxht = getBoxHeight(l);
5197            int textht = l.getHeight();
5198
5199            if (textht < boxht) {
5200                if (gravity == Gravity.BOTTOM)
5201                    voffset = boxht - textht;
5202                else // (gravity == Gravity.CENTER_VERTICAL)
5203                    voffset = (boxht - textht) >> 1;
5204            }
5205        }
5206        return voffset;
5207    }
5208
5209    private int getBottomVerticalOffset(boolean forceNormal) {
5210        int voffset = 0;
5211        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5212
5213        Layout l = mLayout;
5214        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5215            l = mHintLayout;
5216        }
5217
5218        if (gravity != Gravity.BOTTOM) {
5219            int boxht = getBoxHeight(l);
5220            int textht = l.getHeight();
5221
5222            if (textht < boxht) {
5223                if (gravity == Gravity.TOP)
5224                    voffset = boxht - textht;
5225                else // (gravity == Gravity.CENTER_VERTICAL)
5226                    voffset = (boxht - textht) >> 1;
5227            }
5228        }
5229        return voffset;
5230    }
5231
5232    void invalidateCursorPath() {
5233        if (mHighlightPathBogus) {
5234            invalidateCursor();
5235        } else {
5236            final int horizontalPadding = getCompoundPaddingLeft();
5237            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5238
5239            if (mEditor.mCursorCount == 0) {
5240                synchronized (TEMP_RECTF) {
5241                    /*
5242                     * The reason for this concern about the thickness of the
5243                     * cursor and doing the floor/ceil on the coordinates is that
5244                     * some EditTexts (notably textfields in the Browser) have
5245                     * anti-aliased text where not all the characters are
5246                     * necessarily at integer-multiple locations.  This should
5247                     * make sure the entire cursor gets invalidated instead of
5248                     * sometimes missing half a pixel.
5249                     */
5250                    float thick = (float) Math.ceil(mTextPaint.getStrokeWidth());
5251                    if (thick < 1.0f) {
5252                        thick = 1.0f;
5253                    }
5254
5255                    thick /= 2.0f;
5256
5257                    // mHighlightPath is guaranteed to be non null at that point.
5258                    mHighlightPath.computeBounds(TEMP_RECTF, false);
5259
5260                    invalidate((int) Math.floor(horizontalPadding + TEMP_RECTF.left - thick),
5261                            (int) Math.floor(verticalPadding + TEMP_RECTF.top - thick),
5262                            (int) Math.ceil(horizontalPadding + TEMP_RECTF.right + thick),
5263                            (int) Math.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
5264                }
5265            } else {
5266                for (int i = 0; i < mEditor.mCursorCount; i++) {
5267                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5268                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
5269                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
5270                }
5271            }
5272        }
5273    }
5274
5275    void invalidateCursor() {
5276        int where = getSelectionEnd();
5277
5278        invalidateCursor(where, where, where);
5279    }
5280
5281    private void invalidateCursor(int a, int b, int c) {
5282        if (a >= 0 || b >= 0 || c >= 0) {
5283            int start = Math.min(Math.min(a, b), c);
5284            int end = Math.max(Math.max(a, b), c);
5285            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
5286        }
5287    }
5288
5289    /**
5290     * Invalidates the region of text enclosed between the start and end text offsets.
5291     */
5292    void invalidateRegion(int start, int end, boolean invalidateCursor) {
5293        if (mLayout == null) {
5294            invalidate();
5295        } else {
5296                int lineStart = mLayout.getLineForOffset(start);
5297                int top = mLayout.getLineTop(lineStart);
5298
5299                // This is ridiculous, but the descent from the line above
5300                // can hang down into the line we really want to redraw,
5301                // so we have to invalidate part of the line above to make
5302                // sure everything that needs to be redrawn really is.
5303                // (But not the whole line above, because that would cause
5304                // the same problem with the descenders on the line above it!)
5305                if (lineStart > 0) {
5306                    top -= mLayout.getLineDescent(lineStart - 1);
5307                }
5308
5309                int lineEnd;
5310
5311                if (start == end)
5312                    lineEnd = lineStart;
5313                else
5314                    lineEnd = mLayout.getLineForOffset(end);
5315
5316                int bottom = mLayout.getLineBottom(lineEnd);
5317
5318                // mEditor can be null in case selection is set programmatically.
5319                if (invalidateCursor && mEditor != null) {
5320                    for (int i = 0; i < mEditor.mCursorCount; i++) {
5321                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5322                        top = Math.min(top, bounds.top);
5323                        bottom = Math.max(bottom, bounds.bottom);
5324                    }
5325                }
5326
5327                final int compoundPaddingLeft = getCompoundPaddingLeft();
5328                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5329
5330                int left, right;
5331                if (lineStart == lineEnd && !invalidateCursor) {
5332                    left = (int) mLayout.getPrimaryHorizontal(start);
5333                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
5334                    left += compoundPaddingLeft;
5335                    right += compoundPaddingLeft;
5336                } else {
5337                    // Rectangle bounding box when the region spans several lines
5338                    left = compoundPaddingLeft;
5339                    right = getWidth() - getCompoundPaddingRight();
5340                }
5341
5342                invalidate(mScrollX + left, verticalPadding + top,
5343                        mScrollX + right, verticalPadding + bottom);
5344        }
5345    }
5346
5347    private void registerForPreDraw() {
5348        if (!mPreDrawRegistered) {
5349            getViewTreeObserver().addOnPreDrawListener(this);
5350            mPreDrawRegistered = true;
5351        }
5352    }
5353
5354    private void unregisterForPreDraw() {
5355        getViewTreeObserver().removeOnPreDrawListener(this);
5356        mPreDrawRegistered = false;
5357        mPreDrawListenerDetached = false;
5358    }
5359
5360    /**
5361     * {@inheritDoc}
5362     */
5363    public boolean onPreDraw() {
5364        if (mLayout == null) {
5365            assumeLayout();
5366        }
5367
5368        if (mMovement != null) {
5369            /* This code also provides auto-scrolling when a cursor is moved using a
5370             * CursorController (insertion point or selection limits).
5371             * For selection, ensure start or end is visible depending on controller's state.
5372             */
5373            int curs = getSelectionEnd();
5374            // Do not create the controller if it is not already created.
5375            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
5376                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
5377                curs = getSelectionStart();
5378            }
5379
5380            /*
5381             * TODO: This should really only keep the end in view if
5382             * it already was before the text changed.  I'm not sure
5383             * of a good way to tell from here if it was.
5384             */
5385            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5386                curs = mText.length();
5387            }
5388
5389            if (curs >= 0) {
5390                bringPointIntoView(curs);
5391            }
5392        } else {
5393            bringTextIntoView();
5394        }
5395
5396        // This has to be checked here since:
5397        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
5398        //   a screen rotation) since layout is not yet initialized at that point.
5399        if (mEditor != null && mEditor.mCreatedWithASelection) {
5400            mEditor.refreshTextActionMode();
5401            mEditor.mCreatedWithASelection = false;
5402        }
5403
5404        unregisterForPreDraw();
5405
5406        return true;
5407    }
5408
5409    @Override
5410    protected void onAttachedToWindow() {
5411        super.onAttachedToWindow();
5412
5413        if (mEditor != null) mEditor.onAttachedToWindow();
5414
5415        if (mPreDrawListenerDetached) {
5416            getViewTreeObserver().addOnPreDrawListener(this);
5417            mPreDrawListenerDetached = false;
5418        }
5419    }
5420
5421    /** @hide */
5422    @Override
5423    protected void onDetachedFromWindowInternal() {
5424        if (mPreDrawRegistered) {
5425            getViewTreeObserver().removeOnPreDrawListener(this);
5426            mPreDrawListenerDetached = true;
5427        }
5428
5429        resetResolvedDrawables();
5430
5431        if (mEditor != null) mEditor.onDetachedFromWindow();
5432
5433        super.onDetachedFromWindowInternal();
5434    }
5435
5436    @Override
5437    public void onScreenStateChanged(int screenState) {
5438        super.onScreenStateChanged(screenState);
5439        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
5440    }
5441
5442    @Override
5443    protected boolean isPaddingOffsetRequired() {
5444        return mShadowRadius != 0 || mDrawables != null;
5445    }
5446
5447    @Override
5448    protected int getLeftPaddingOffset() {
5449        return getCompoundPaddingLeft() - mPaddingLeft +
5450                (int) Math.min(0, mShadowDx - mShadowRadius);
5451    }
5452
5453    @Override
5454    protected int getTopPaddingOffset() {
5455        return (int) Math.min(0, mShadowDy - mShadowRadius);
5456    }
5457
5458    @Override
5459    protected int getBottomPaddingOffset() {
5460        return (int) Math.max(0, mShadowDy + mShadowRadius);
5461    }
5462
5463    @Override
5464    protected int getRightPaddingOffset() {
5465        return -(getCompoundPaddingRight() - mPaddingRight) +
5466                (int) Math.max(0, mShadowDx + mShadowRadius);
5467    }
5468
5469    @Override
5470    protected boolean verifyDrawable(@NonNull Drawable who) {
5471        final boolean verified = super.verifyDrawable(who);
5472        if (!verified && mDrawables != null) {
5473            for (Drawable dr : mDrawables.mShowing) {
5474                if (who == dr) {
5475                    return true;
5476                }
5477            }
5478        }
5479        return verified;
5480    }
5481
5482    @Override
5483    public void jumpDrawablesToCurrentState() {
5484        super.jumpDrawablesToCurrentState();
5485        if (mDrawables != null) {
5486            for (Drawable dr : mDrawables.mShowing) {
5487                if (dr != null) {
5488                    dr.jumpToCurrentState();
5489                }
5490            }
5491        }
5492    }
5493
5494    @Override
5495    public void invalidateDrawable(@NonNull Drawable drawable) {
5496        boolean handled = false;
5497
5498        if (verifyDrawable(drawable)) {
5499            final Rect dirty = drawable.getBounds();
5500            int scrollX = mScrollX;
5501            int scrollY = mScrollY;
5502
5503            // IMPORTANT: The coordinates below are based on the coordinates computed
5504            // for each compound drawable in onDraw(). Make sure to update each section
5505            // accordingly.
5506            final TextView.Drawables drawables = mDrawables;
5507            if (drawables != null) {
5508                if (drawable == drawables.mShowing[Drawables.LEFT]) {
5509                    final int compoundPaddingTop = getCompoundPaddingTop();
5510                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5511                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5512
5513                    scrollX += mPaddingLeft;
5514                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
5515                    handled = true;
5516                } else if (drawable == drawables.mShowing[Drawables.RIGHT]) {
5517                    final int compoundPaddingTop = getCompoundPaddingTop();
5518                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5519                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5520
5521                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
5522                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
5523                    handled = true;
5524                } else if (drawable == drawables.mShowing[Drawables.TOP]) {
5525                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5526                    final int compoundPaddingRight = getCompoundPaddingRight();
5527                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5528
5529                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
5530                    scrollY += mPaddingTop;
5531                    handled = true;
5532                } else if (drawable == drawables.mShowing[Drawables.BOTTOM]) {
5533                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5534                    final int compoundPaddingRight = getCompoundPaddingRight();
5535                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5536
5537                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
5538                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
5539                    handled = true;
5540                }
5541            }
5542
5543            if (handled) {
5544                invalidate(dirty.left + scrollX, dirty.top + scrollY,
5545                        dirty.right + scrollX, dirty.bottom + scrollY);
5546            }
5547        }
5548
5549        if (!handled) {
5550            super.invalidateDrawable(drawable);
5551        }
5552    }
5553
5554    @Override
5555    public boolean hasOverlappingRendering() {
5556        // horizontal fading edge causes SaveLayerAlpha, which doesn't support alpha modulation
5557        return ((getBackground() != null && getBackground().getCurrent() != null)
5558                || mText instanceof Spannable || hasSelection()
5559                || isHorizontalFadingEdgeEnabled());
5560    }
5561
5562    /**
5563     *
5564     * Returns the state of the {@code textIsSelectable} flag (See
5565     * {@link #setTextIsSelectable setTextIsSelectable()}). Although you have to set this flag
5566     * to allow users to select and copy text in a non-editable TextView, the content of an
5567     * {@link EditText} can always be selected, independently of the value of this flag.
5568     * <p>
5569     *
5570     * @return True if the text displayed in this TextView can be selected by the user.
5571     *
5572     * @attr ref android.R.styleable#TextView_textIsSelectable
5573     */
5574    public boolean isTextSelectable() {
5575        return mEditor == null ? false : mEditor.mTextIsSelectable;
5576    }
5577
5578    /**
5579     * Sets whether the content of this view is selectable by the user. The default is
5580     * {@code false}, meaning that the content is not selectable.
5581     * <p>
5582     * When you use a TextView to display a useful piece of information to the user (such as a
5583     * contact's address), make it selectable, so that the user can select and copy its
5584     * content. You can also use set the XML attribute
5585     * {@link android.R.styleable#TextView_textIsSelectable} to "true".
5586     * <p>
5587     * When you call this method to set the value of {@code textIsSelectable}, it sets
5588     * the flags {@code focusable}, {@code focusableInTouchMode}, {@code clickable},
5589     * and {@code longClickable} to the same value. These flags correspond to the attributes
5590     * {@link android.R.styleable#View_focusable android:focusable},
5591     * {@link android.R.styleable#View_focusableInTouchMode android:focusableInTouchMode},
5592     * {@link android.R.styleable#View_clickable android:clickable}, and
5593     * {@link android.R.styleable#View_longClickable android:longClickable}. To restore any of these
5594     * flags to a state you had set previously, call one or more of the following methods:
5595     * {@link #setFocusable(boolean) setFocusable()},
5596     * {@link #setFocusableInTouchMode(boolean) setFocusableInTouchMode()},
5597     * {@link #setClickable(boolean) setClickable()} or
5598     * {@link #setLongClickable(boolean) setLongClickable()}.
5599     *
5600     * @param selectable Whether the content of this TextView should be selectable.
5601     */
5602    public void setTextIsSelectable(boolean selectable) {
5603        if (!selectable && mEditor == null) return; // false is default value with no edit data
5604
5605        createEditorIfNeeded();
5606        if (mEditor.mTextIsSelectable == selectable) return;
5607
5608        mEditor.mTextIsSelectable = selectable;
5609        setFocusableInTouchMode(selectable);
5610        setFocusable(selectable);
5611        setClickable(selectable);
5612        setLongClickable(selectable);
5613
5614        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
5615
5616        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
5617        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
5618
5619        // Called by setText above, but safer in case of future code changes
5620        mEditor.prepareCursorControllers();
5621    }
5622
5623    @Override
5624    protected int[] onCreateDrawableState(int extraSpace) {
5625        final int[] drawableState;
5626
5627        if (mSingleLine) {
5628            drawableState = super.onCreateDrawableState(extraSpace);
5629        } else {
5630            drawableState = super.onCreateDrawableState(extraSpace + 1);
5631            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
5632        }
5633
5634        if (isTextSelectable()) {
5635            // Disable pressed state, which was introduced when TextView was made clickable.
5636            // Prevents text color change.
5637            // setClickable(false) would have a similar effect, but it also disables focus changes
5638            // and long press actions, which are both needed by text selection.
5639            final int length = drawableState.length;
5640            for (int i = 0; i < length; i++) {
5641                if (drawableState[i] == R.attr.state_pressed) {
5642                    final int[] nonPressedState = new int[length - 1];
5643                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
5644                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
5645                    return nonPressedState;
5646                }
5647            }
5648        }
5649
5650        return drawableState;
5651    }
5652
5653    private Path getUpdatedHighlightPath() {
5654        Path highlight = null;
5655        Paint highlightPaint = mHighlightPaint;
5656
5657        final int selStart = getSelectionStart();
5658        final int selEnd = getSelectionEnd();
5659        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
5660            if (selStart == selEnd) {
5661                if (mEditor != null && mEditor.isCursorVisible() &&
5662                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
5663                        (2 * Editor.BLINK) < Editor.BLINK) {
5664                    if (mHighlightPathBogus) {
5665                        if (mHighlightPath == null) mHighlightPath = new Path();
5666                        mHighlightPath.reset();
5667                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
5668                        mEditor.updateCursorsPositions();
5669                        mHighlightPathBogus = false;
5670                    }
5671
5672                    // XXX should pass to skin instead of drawing directly
5673                    highlightPaint.setColor(mCurTextColor);
5674                    highlightPaint.setStyle(Paint.Style.STROKE);
5675                    highlight = mHighlightPath;
5676                }
5677            } else {
5678                if (mHighlightPathBogus) {
5679                    if (mHighlightPath == null) mHighlightPath = new Path();
5680                    mHighlightPath.reset();
5681                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5682                    mHighlightPathBogus = false;
5683                }
5684
5685                // XXX should pass to skin instead of drawing directly
5686                highlightPaint.setColor(mHighlightColor);
5687                highlightPaint.setStyle(Paint.Style.FILL);
5688
5689                highlight = mHighlightPath;
5690            }
5691        }
5692        return highlight;
5693    }
5694
5695    /**
5696     * @hide
5697     */
5698    public int getHorizontalOffsetForDrawables() {
5699        return 0;
5700    }
5701
5702    @Override
5703    protected void onDraw(Canvas canvas) {
5704        restartMarqueeIfNeeded();
5705
5706        // Draw the background for this view
5707        super.onDraw(canvas);
5708
5709        final int compoundPaddingLeft = getCompoundPaddingLeft();
5710        final int compoundPaddingTop = getCompoundPaddingTop();
5711        final int compoundPaddingRight = getCompoundPaddingRight();
5712        final int compoundPaddingBottom = getCompoundPaddingBottom();
5713        final int scrollX = mScrollX;
5714        final int scrollY = mScrollY;
5715        final int right = mRight;
5716        final int left = mLeft;
5717        final int bottom = mBottom;
5718        final int top = mTop;
5719        final boolean isLayoutRtl = isLayoutRtl();
5720        final int offset = getHorizontalOffsetForDrawables();
5721        final int leftOffset = isLayoutRtl ? 0 : offset;
5722        final int rightOffset = isLayoutRtl ? offset : 0 ;
5723
5724        final Drawables dr = mDrawables;
5725        if (dr != null) {
5726            /*
5727             * Compound, not extended, because the icon is not clipped
5728             * if the text height is smaller.
5729             */
5730
5731            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
5732            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
5733
5734            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5735            // Make sure to update invalidateDrawable() when changing this code.
5736            if (dr.mShowing[Drawables.LEFT] != null) {
5737                canvas.save();
5738                canvas.translate(scrollX + mPaddingLeft + leftOffset,
5739                                 scrollY + compoundPaddingTop +
5740                                 (vspace - dr.mDrawableHeightLeft) / 2);
5741                dr.mShowing[Drawables.LEFT].draw(canvas);
5742                canvas.restore();
5743            }
5744
5745            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5746            // Make sure to update invalidateDrawable() when changing this code.
5747            if (dr.mShowing[Drawables.RIGHT] != null) {
5748                canvas.save();
5749                canvas.translate(scrollX + right - left - mPaddingRight
5750                        - dr.mDrawableSizeRight - rightOffset,
5751                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
5752                dr.mShowing[Drawables.RIGHT].draw(canvas);
5753                canvas.restore();
5754            }
5755
5756            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5757            // Make sure to update invalidateDrawable() when changing this code.
5758            if (dr.mShowing[Drawables.TOP] != null) {
5759                canvas.save();
5760                canvas.translate(scrollX + compoundPaddingLeft +
5761                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
5762                dr.mShowing[Drawables.TOP].draw(canvas);
5763                canvas.restore();
5764            }
5765
5766            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5767            // Make sure to update invalidateDrawable() when changing this code.
5768            if (dr.mShowing[Drawables.BOTTOM] != null) {
5769                canvas.save();
5770                canvas.translate(scrollX + compoundPaddingLeft +
5771                        (hspace - dr.mDrawableWidthBottom) / 2,
5772                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
5773                dr.mShowing[Drawables.BOTTOM].draw(canvas);
5774                canvas.restore();
5775            }
5776        }
5777
5778        int color = mCurTextColor;
5779
5780        if (mLayout == null) {
5781            assumeLayout();
5782        }
5783
5784        Layout layout = mLayout;
5785
5786        if (mHint != null && mText.length() == 0) {
5787            if (mHintTextColor != null) {
5788                color = mCurHintTextColor;
5789            }
5790
5791            layout = mHintLayout;
5792        }
5793
5794        mTextPaint.setColor(color);
5795        mTextPaint.drawableState = getDrawableState();
5796
5797        canvas.save();
5798        /*  Would be faster if we didn't have to do this. Can we chop the
5799            (displayable) text so that we don't need to do this ever?
5800        */
5801
5802        int extendedPaddingTop = getExtendedPaddingTop();
5803        int extendedPaddingBottom = getExtendedPaddingBottom();
5804
5805        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5806        final int maxScrollY = mLayout.getHeight() - vspace;
5807
5808        float clipLeft = compoundPaddingLeft + scrollX;
5809        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
5810        float clipRight = right - left - getCompoundPaddingRight() + scrollX;
5811        float clipBottom = bottom - top + scrollY -
5812                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
5813
5814        if (mShadowRadius != 0) {
5815            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
5816            clipRight += Math.max(0, mShadowDx + mShadowRadius);
5817
5818            clipTop += Math.min(0, mShadowDy - mShadowRadius);
5819            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
5820        }
5821
5822        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
5823
5824        int voffsetText = 0;
5825        int voffsetCursor = 0;
5826
5827        // translate in by our padding
5828        /* shortcircuit calling getVerticaOffset() */
5829        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5830            voffsetText = getVerticalOffset(false);
5831            voffsetCursor = getVerticalOffset(true);
5832        }
5833        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
5834
5835        final int layoutDirection = getLayoutDirection();
5836        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
5837        if (isMarqueeFadeEnabled()) {
5838            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
5839                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
5840                final int width = mRight - mLeft;
5841                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
5842                final float dx = mLayout.getLineRight(0) - (width - padding);
5843                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5844            }
5845
5846            if (mMarquee != null && mMarquee.isRunning()) {
5847                final float dx = -mMarquee.getScroll();
5848                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5849            }
5850        }
5851
5852        final int cursorOffsetVertical = voffsetCursor - voffsetText;
5853
5854        Path highlight = getUpdatedHighlightPath();
5855        if (mEditor != null) {
5856            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
5857        } else {
5858            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5859        }
5860
5861        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
5862            final float dx = mMarquee.getGhostOffset();
5863            canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5864            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5865        }
5866
5867        canvas.restore();
5868    }
5869
5870    @Override
5871    public void getFocusedRect(Rect r) {
5872        if (mLayout == null) {
5873            super.getFocusedRect(r);
5874            return;
5875        }
5876
5877        int selEnd = getSelectionEnd();
5878        if (selEnd < 0) {
5879            super.getFocusedRect(r);
5880            return;
5881        }
5882
5883        int selStart = getSelectionStart();
5884        if (selStart < 0 || selStart >= selEnd) {
5885            int line = mLayout.getLineForOffset(selEnd);
5886            r.top = mLayout.getLineTop(line);
5887            r.bottom = mLayout.getLineBottom(line);
5888            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
5889            r.right = r.left + 4;
5890        } else {
5891            int lineStart = mLayout.getLineForOffset(selStart);
5892            int lineEnd = mLayout.getLineForOffset(selEnd);
5893            r.top = mLayout.getLineTop(lineStart);
5894            r.bottom = mLayout.getLineBottom(lineEnd);
5895            if (lineStart == lineEnd) {
5896                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
5897                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
5898            } else {
5899                // Selection extends across multiple lines -- make the focused
5900                // rect cover the entire width.
5901                if (mHighlightPathBogus) {
5902                    if (mHighlightPath == null) mHighlightPath = new Path();
5903                    mHighlightPath.reset();
5904                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5905                    mHighlightPathBogus = false;
5906                }
5907                synchronized (TEMP_RECTF) {
5908                    mHighlightPath.computeBounds(TEMP_RECTF, true);
5909                    r.left = (int)TEMP_RECTF.left-1;
5910                    r.right = (int)TEMP_RECTF.right+1;
5911                }
5912            }
5913        }
5914
5915        // Adjust for padding and gravity.
5916        int paddingLeft = getCompoundPaddingLeft();
5917        int paddingTop = getExtendedPaddingTop();
5918        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5919            paddingTop += getVerticalOffset(false);
5920        }
5921        r.offset(paddingLeft, paddingTop);
5922        int paddingBottom = getExtendedPaddingBottom();
5923        r.bottom += paddingBottom;
5924    }
5925
5926    /**
5927     * Return the number of lines of text, or 0 if the internal Layout has not
5928     * been built.
5929     */
5930    public int getLineCount() {
5931        return mLayout != null ? mLayout.getLineCount() : 0;
5932    }
5933
5934    /**
5935     * Return the baseline for the specified line (0...getLineCount() - 1)
5936     * If bounds is not null, return the top, left, right, bottom extents
5937     * of the specified line in it. If the internal Layout has not been built,
5938     * return 0 and set bounds to (0, 0, 0, 0)
5939     * @param line which line to examine (0..getLineCount() - 1)
5940     * @param bounds Optional. If not null, it returns the extent of the line
5941     * @return the Y-coordinate of the baseline
5942     */
5943    public int getLineBounds(int line, Rect bounds) {
5944        if (mLayout == null) {
5945            if (bounds != null) {
5946                bounds.set(0, 0, 0, 0);
5947            }
5948            return 0;
5949        }
5950        else {
5951            int baseline = mLayout.getLineBounds(line, bounds);
5952
5953            int voffset = getExtendedPaddingTop();
5954            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5955                voffset += getVerticalOffset(true);
5956            }
5957            if (bounds != null) {
5958                bounds.offset(getCompoundPaddingLeft(), voffset);
5959            }
5960            return baseline + voffset;
5961        }
5962    }
5963
5964    @Override
5965    public int getBaseline() {
5966        if (mLayout == null) {
5967            return super.getBaseline();
5968        }
5969
5970        return getBaselineOffset() + mLayout.getLineBaseline(0);
5971    }
5972
5973    int getBaselineOffset() {
5974        int voffset = 0;
5975        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5976            voffset = getVerticalOffset(true);
5977        }
5978
5979        if (isLayoutModeOptical(mParent)) {
5980            voffset -= getOpticalInsets().top;
5981        }
5982
5983        return getExtendedPaddingTop() + voffset;
5984    }
5985
5986    /**
5987     * @hide
5988     */
5989    @Override
5990    protected int getFadeTop(boolean offsetRequired) {
5991        if (mLayout == null) return 0;
5992
5993        int voffset = 0;
5994        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5995            voffset = getVerticalOffset(true);
5996        }
5997
5998        if (offsetRequired) voffset += getTopPaddingOffset();
5999
6000        return getExtendedPaddingTop() + voffset;
6001    }
6002
6003    /**
6004     * @hide
6005     */
6006    @Override
6007    protected int getFadeHeight(boolean offsetRequired) {
6008        return mLayout != null ? mLayout.getHeight() : 0;
6009    }
6010
6011    @Override
6012    public PointerIcon onResolvePointerIcon(MotionEvent event, int pointerIndex) {
6013        if (mText instanceof Spannable && mLinksClickable) {
6014            final float x = event.getX(pointerIndex);
6015            final float y = event.getY(pointerIndex);
6016            final int offset = getOffsetForPosition(x, y);
6017            final ClickableSpan[] clickables = ((Spannable) mText).getSpans(offset, offset,
6018                    ClickableSpan.class);
6019            if (clickables.length > 0) {
6020                return PointerIcon.getSystemIcon(mContext, PointerIcon.TYPE_HAND);
6021            }
6022        }
6023        if (isTextSelectable() || isTextEditable()) {
6024            return PointerIcon.getSystemIcon(mContext, PointerIcon.TYPE_TEXT);
6025        }
6026        return super.onResolvePointerIcon(event, pointerIndex);
6027    }
6028
6029    @Override
6030    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
6031        // Note: If the IME is in fullscreen mode and IMS#mExtractEditText is in text action mode,
6032        // InputMethodService#onKeyDown and InputMethodService#onKeyUp are responsible to call
6033        // InputMethodService#mExtractEditText.maybeHandleBackInTextActionMode(event).
6034        if (keyCode == KeyEvent.KEYCODE_BACK && handleBackInTextActionModeIfNeeded(event)) {
6035            return true;
6036        }
6037        return super.onKeyPreIme(keyCode, event);
6038    }
6039
6040    /**
6041     * @hide
6042     */
6043    public boolean handleBackInTextActionModeIfNeeded(KeyEvent event) {
6044        // Do nothing unless mEditor is in text action mode.
6045        if (mEditor == null || mEditor.mTextActionMode == null) {
6046            return false;
6047        }
6048
6049        if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
6050            KeyEvent.DispatcherState state = getKeyDispatcherState();
6051            if (state != null) {
6052                state.startTracking(event, this);
6053            }
6054            return true;
6055        } else if (event.getAction() == KeyEvent.ACTION_UP) {
6056            KeyEvent.DispatcherState state = getKeyDispatcherState();
6057            if (state != null) {
6058                state.handleUpEvent(event);
6059            }
6060            if (event.isTracking() && !event.isCanceled()) {
6061                stopTextActionMode();
6062                return true;
6063            }
6064        }
6065        return false;
6066    }
6067
6068    @Override
6069    public boolean onKeyDown(int keyCode, KeyEvent event) {
6070        final int which = doKeyDown(keyCode, event, null);
6071        if (which == KEY_EVENT_NOT_HANDLED) {
6072            return super.onKeyDown(keyCode, event);
6073        }
6074
6075        return true;
6076    }
6077
6078    @Override
6079    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
6080        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
6081        final int which = doKeyDown(keyCode, down, event);
6082        if (which == KEY_EVENT_NOT_HANDLED) {
6083            // Go through default dispatching.
6084            return super.onKeyMultiple(keyCode, repeatCount, event);
6085        }
6086        if (which == KEY_EVENT_HANDLED) {
6087            // Consumed the whole thing.
6088            return true;
6089        }
6090
6091        repeatCount--;
6092
6093        // We are going to dispatch the remaining events to either the input
6094        // or movement method.  To do this, we will just send a repeated stream
6095        // of down and up events until we have done the complete repeatCount.
6096        // It would be nice if those interfaces had an onKeyMultiple() method,
6097        // but adding that is a more complicated change.
6098        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
6099        if (which == KEY_DOWN_HANDLED_BY_KEY_LISTENER) {
6100            // mEditor and mEditor.mInput are not null from doKeyDown
6101            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
6102            while (--repeatCount > 0) {
6103                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
6104                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
6105            }
6106            hideErrorIfUnchanged();
6107
6108        } else if (which == KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD) {
6109            // mMovement is not null from doKeyDown
6110            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6111            while (--repeatCount > 0) {
6112                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
6113                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6114            }
6115        }
6116
6117        return true;
6118    }
6119
6120    /**
6121     * Returns true if pressing ENTER in this field advances focus instead
6122     * of inserting the character.  This is true mostly in single-line fields,
6123     * but also in mail addresses and subjects which will display on multiple
6124     * lines but where it doesn't make sense to insert newlines.
6125     */
6126    private boolean shouldAdvanceFocusOnEnter() {
6127        if (getKeyListener() == null) {
6128            return false;
6129        }
6130
6131        if (mSingleLine) {
6132            return true;
6133        }
6134
6135        if (mEditor != null &&
6136                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6137            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6138            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
6139                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
6140                return true;
6141            }
6142        }
6143
6144        return false;
6145    }
6146
6147    /**
6148     * Returns true if pressing TAB in this field advances focus instead
6149     * of inserting the character.  Insert tabs only in multi-line editors.
6150     */
6151    private boolean shouldAdvanceFocusOnTab() {
6152        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
6153                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6154            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6155            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
6156                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
6157                return false;
6158            }
6159        }
6160        return true;
6161    }
6162
6163    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
6164        if (!isEnabled()) {
6165            return KEY_EVENT_NOT_HANDLED;
6166        }
6167
6168        // If this is the initial keydown, we don't want to prevent a movement away from this view.
6169        // While this shouldn't be necessary because any time we're preventing default movement we
6170        // should be restricting the focus to remain within this view, thus we'll also receive
6171        // the key up event, occasionally key up events will get dropped and we don't want to
6172        // prevent the user from traversing out of this on the next key down.
6173        if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6174            mPreventDefaultMovement = false;
6175        }
6176
6177        switch (keyCode) {
6178            case KeyEvent.KEYCODE_ENTER:
6179                if (event.hasNoModifiers()) {
6180                    // When mInputContentType is set, we know that we are
6181                    // running in a "modern" cupcake environment, so don't need
6182                    // to worry about the application trying to capture
6183                    // enter key events.
6184                    if (mEditor != null && mEditor.mInputContentType != null) {
6185                        // If there is an action listener, given them a
6186                        // chance to consume the event.
6187                        if (mEditor.mInputContentType.onEditorActionListener != null &&
6188                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6189                                this, EditorInfo.IME_NULL, event)) {
6190                            mEditor.mInputContentType.enterDown = true;
6191                            // We are consuming the enter key for them.
6192                            return KEY_EVENT_HANDLED;
6193                        }
6194                    }
6195
6196                    // If our editor should move focus when enter is pressed, or
6197                    // this is a generated event from an IME action button, then
6198                    // don't let it be inserted into the text.
6199                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6200                            || shouldAdvanceFocusOnEnter()) {
6201                        if (hasOnClickListeners()) {
6202                            return KEY_EVENT_NOT_HANDLED;
6203                        }
6204                        return KEY_EVENT_HANDLED;
6205                    }
6206                }
6207                break;
6208
6209            case KeyEvent.KEYCODE_DPAD_CENTER:
6210                if (event.hasNoModifiers()) {
6211                    if (shouldAdvanceFocusOnEnter()) {
6212                        return KEY_EVENT_NOT_HANDLED;
6213                    }
6214                }
6215                break;
6216
6217            case KeyEvent.KEYCODE_TAB:
6218                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
6219                    if (shouldAdvanceFocusOnTab()) {
6220                        return KEY_EVENT_NOT_HANDLED;
6221                    }
6222                }
6223                break;
6224
6225                // Has to be done on key down (and not on key up) to correctly be intercepted.
6226            case KeyEvent.KEYCODE_BACK:
6227                if (mEditor != null && mEditor.mTextActionMode != null) {
6228                    stopTextActionMode();
6229                    return KEY_EVENT_HANDLED;
6230                }
6231                break;
6232
6233            case KeyEvent.KEYCODE_CUT:
6234                if (event.hasNoModifiers() && canCut()) {
6235                    if (onTextContextMenuItem(ID_CUT)) {
6236                        return KEY_EVENT_HANDLED;
6237                    }
6238                }
6239                break;
6240
6241            case KeyEvent.KEYCODE_COPY:
6242                if (event.hasNoModifiers() && canCopy()) {
6243                    if (onTextContextMenuItem(ID_COPY)) {
6244                        return KEY_EVENT_HANDLED;
6245                    }
6246                }
6247                break;
6248
6249            case KeyEvent.KEYCODE_PASTE:
6250                if (event.hasNoModifiers() && canPaste()) {
6251                    if (onTextContextMenuItem(ID_PASTE)) {
6252                        return KEY_EVENT_HANDLED;
6253                    }
6254                }
6255                break;
6256        }
6257
6258        if (mEditor != null && mEditor.mKeyListener != null) {
6259            boolean doDown = true;
6260            if (otherEvent != null) {
6261                try {
6262                    beginBatchEdit();
6263                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
6264                            otherEvent);
6265                    hideErrorIfUnchanged();
6266                    doDown = false;
6267                    if (handled) {
6268                        return KEY_EVENT_HANDLED;
6269                    }
6270                } catch (AbstractMethodError e) {
6271                    // onKeyOther was added after 1.0, so if it isn't
6272                    // implemented we need to try to dispatch as a regular down.
6273                } finally {
6274                    endBatchEdit();
6275                }
6276            }
6277
6278            if (doDown) {
6279                beginBatchEdit();
6280                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
6281                        keyCode, event);
6282                endBatchEdit();
6283                hideErrorIfUnchanged();
6284                if (handled) return KEY_DOWN_HANDLED_BY_KEY_LISTENER;
6285            }
6286        }
6287
6288        // bug 650865: sometimes we get a key event before a layout.
6289        // don't try to move around if we don't know the layout.
6290
6291        if (mMovement != null && mLayout != null) {
6292            boolean doDown = true;
6293            if (otherEvent != null) {
6294                try {
6295                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
6296                            otherEvent);
6297                    doDown = false;
6298                    if (handled) {
6299                        return KEY_EVENT_HANDLED;
6300                    }
6301                } catch (AbstractMethodError e) {
6302                    // onKeyOther was added after 1.0, so if it isn't
6303                    // implemented we need to try to dispatch as a regular down.
6304                }
6305            }
6306            if (doDown) {
6307                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event)) {
6308                    if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6309                        mPreventDefaultMovement = true;
6310                    }
6311                    return KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD;
6312                }
6313            }
6314        }
6315
6316        return mPreventDefaultMovement && !KeyEvent.isModifierKey(keyCode) ?
6317                KEY_EVENT_HANDLED : KEY_EVENT_NOT_HANDLED;
6318    }
6319
6320    /**
6321     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
6322     * can be recorded.
6323     * @hide
6324     */
6325    public void resetErrorChangedFlag() {
6326        /*
6327         * Keep track of what the error was before doing the input
6328         * so that if an input filter changed the error, we leave
6329         * that error showing.  Otherwise, we take down whatever
6330         * error was showing when the user types something.
6331         */
6332        if (mEditor != null) mEditor.mErrorWasChanged = false;
6333    }
6334
6335    /**
6336     * @hide
6337     */
6338    public void hideErrorIfUnchanged() {
6339        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
6340            setError(null, null);
6341        }
6342    }
6343
6344    @Override
6345    public boolean onKeyUp(int keyCode, KeyEvent event) {
6346        if (!isEnabled()) {
6347            return super.onKeyUp(keyCode, event);
6348        }
6349
6350        if (!KeyEvent.isModifierKey(keyCode)) {
6351            mPreventDefaultMovement = false;
6352        }
6353
6354        switch (keyCode) {
6355            case KeyEvent.KEYCODE_DPAD_CENTER:
6356                if (event.hasNoModifiers()) {
6357                    /*
6358                     * If there is a click listener, just call through to
6359                     * super, which will invoke it.
6360                     *
6361                     * If there isn't a click listener, try to show the soft
6362                     * input method.  (It will also
6363                     * call performClick(), but that won't do anything in
6364                     * this case.)
6365                     */
6366                    if (!hasOnClickListeners()) {
6367                        if (mMovement != null && mText instanceof Editable
6368                                && mLayout != null && onCheckIsTextEditor()) {
6369                            InputMethodManager imm = InputMethodManager.peekInstance();
6370                            viewClicked(imm);
6371                            if (imm != null && getShowSoftInputOnFocus()) {
6372                                imm.showSoftInput(this, 0);
6373                            }
6374                        }
6375                    }
6376                }
6377                return super.onKeyUp(keyCode, event);
6378
6379            case KeyEvent.KEYCODE_ENTER:
6380                if (event.hasNoModifiers()) {
6381                    if (mEditor != null && mEditor.mInputContentType != null
6382                            && mEditor.mInputContentType.onEditorActionListener != null
6383                            && mEditor.mInputContentType.enterDown) {
6384                        mEditor.mInputContentType.enterDown = false;
6385                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6386                                this, EditorInfo.IME_NULL, event)) {
6387                            return true;
6388                        }
6389                    }
6390
6391                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6392                            || shouldAdvanceFocusOnEnter()) {
6393                        /*
6394                         * If there is a click listener, just call through to
6395                         * super, which will invoke it.
6396                         *
6397                         * If there isn't a click listener, try to advance focus,
6398                         * but still call through to super, which will reset the
6399                         * pressed state and longpress state.  (It will also
6400                         * call performClick(), but that won't do anything in
6401                         * this case.)
6402                         */
6403                        if (!hasOnClickListeners()) {
6404                            View v = focusSearch(FOCUS_DOWN);
6405
6406                            if (v != null) {
6407                                if (!v.requestFocus(FOCUS_DOWN)) {
6408                                    throw new IllegalStateException(
6409                                            "focus search returned a view " +
6410                                            "that wasn't able to take focus!");
6411                                }
6412
6413                                /*
6414                                 * Return true because we handled the key; super
6415                                 * will return false because there was no click
6416                                 * listener.
6417                                 */
6418                                super.onKeyUp(keyCode, event);
6419                                return true;
6420                            } else if ((event.getFlags()
6421                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
6422                                // No target for next focus, but make sure the IME
6423                                // if this came from it.
6424                                InputMethodManager imm = InputMethodManager.peekInstance();
6425                                if (imm != null && imm.isActive(this)) {
6426                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
6427                                }
6428                            }
6429                        }
6430                    }
6431                    return super.onKeyUp(keyCode, event);
6432                }
6433                break;
6434        }
6435
6436        if (mEditor != null && mEditor.mKeyListener != null)
6437            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
6438                return true;
6439
6440        if (mMovement != null && mLayout != null)
6441            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
6442                return true;
6443
6444        return super.onKeyUp(keyCode, event);
6445    }
6446
6447    @Override
6448    public boolean onCheckIsTextEditor() {
6449        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
6450    }
6451
6452    @Override
6453    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
6454        if (onCheckIsTextEditor() && isEnabled()) {
6455            mEditor.createInputMethodStateIfNeeded();
6456            outAttrs.inputType = getInputType();
6457            if (mEditor.mInputContentType != null) {
6458                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
6459                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
6460                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
6461                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
6462                outAttrs.extras = mEditor.mInputContentType.extras;
6463                outAttrs.hintLocales = mEditor.mInputContentType.imeHintLocales;
6464            } else {
6465                outAttrs.imeOptions = EditorInfo.IME_NULL;
6466                outAttrs.hintLocales = null;
6467            }
6468            if (focusSearch(FOCUS_DOWN) != null) {
6469                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
6470            }
6471            if (focusSearch(FOCUS_UP) != null) {
6472                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
6473            }
6474            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
6475                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
6476                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
6477                    // An action has not been set, but the enter key will move to
6478                    // the next focus, so set the action to that.
6479                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
6480                } else {
6481                    // An action has not been set, and there is no focus to move
6482                    // to, so let's just supply a "done" action.
6483                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
6484                }
6485                if (!shouldAdvanceFocusOnEnter()) {
6486                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6487                }
6488            }
6489            if (isMultilineInputType(outAttrs.inputType)) {
6490                // Multi-line text editors should always show an enter key.
6491                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6492            }
6493            outAttrs.hintText = mHint;
6494            if (mText instanceof Editable) {
6495                InputConnection ic = new EditableInputConnection(this);
6496                outAttrs.initialSelStart = getSelectionStart();
6497                outAttrs.initialSelEnd = getSelectionEnd();
6498                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
6499                return ic;
6500            }
6501        }
6502        return null;
6503    }
6504
6505    /**
6506     * If this TextView contains editable content, extract a portion of it
6507     * based on the information in <var>request</var> in to <var>outText</var>.
6508     * @return Returns true if the text was successfully extracted, else false.
6509     */
6510    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
6511        createEditorIfNeeded();
6512        return mEditor.extractText(request, outText);
6513    }
6514
6515    /**
6516     * This is used to remove all style-impacting spans from text before new
6517     * extracted text is being replaced into it, so that we don't have any
6518     * lingering spans applied during the replace.
6519     */
6520    static void removeParcelableSpans(Spannable spannable, int start, int end) {
6521        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
6522        int i = spans.length;
6523        while (i > 0) {
6524            i--;
6525            spannable.removeSpan(spans[i]);
6526        }
6527    }
6528
6529    /**
6530     * Apply to this text view the given extracted text, as previously
6531     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
6532     */
6533    public void setExtractedText(ExtractedText text) {
6534        Editable content = getEditableText();
6535        if (text.text != null) {
6536            if (content == null) {
6537                setText(text.text, TextView.BufferType.EDITABLE);
6538            } else {
6539                int start = 0;
6540                int end = content.length();
6541
6542                if (text.partialStartOffset >= 0) {
6543                    final int N = content.length();
6544                    start = text.partialStartOffset;
6545                    if (start > N) start = N;
6546                    end = text.partialEndOffset;
6547                    if (end > N) end = N;
6548                }
6549
6550                removeParcelableSpans(content, start, end);
6551                if (TextUtils.equals(content.subSequence(start, end), text.text)) {
6552                    if (text.text instanceof Spanned) {
6553                        // OK to copy spans only.
6554                        TextUtils.copySpansFrom((Spanned) text.text, 0, end - start,
6555                                Object.class, content, start);
6556                    }
6557                } else {
6558                    content.replace(start, end, text.text);
6559                }
6560            }
6561        }
6562
6563        // Now set the selection position...  make sure it is in range, to
6564        // avoid crashes.  If this is a partial update, it is possible that
6565        // the underlying text may have changed, causing us problems here.
6566        // Also we just don't want to trust clients to do the right thing.
6567        Spannable sp = (Spannable)getText();
6568        final int N = sp.length();
6569        int start = text.selectionStart;
6570        if (start < 0) start = 0;
6571        else if (start > N) start = N;
6572        int end = text.selectionEnd;
6573        if (end < 0) end = 0;
6574        else if (end > N) end = N;
6575        Selection.setSelection(sp, start, end);
6576
6577        // Finally, update the selection mode.
6578        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
6579            MetaKeyKeyListener.startSelecting(this, sp);
6580        } else {
6581            MetaKeyKeyListener.stopSelecting(this, sp);
6582        }
6583    }
6584
6585    /**
6586     * @hide
6587     */
6588    public void setExtracting(ExtractedTextRequest req) {
6589        if (mEditor.mInputMethodState != null) {
6590            mEditor.mInputMethodState.mExtractedTextRequest = req;
6591        }
6592        // This would stop a possible selection mode, but no such mode is started in case
6593        // extracted mode will start. Some text is selected though, and will trigger an action mode
6594        // in the extracted view.
6595        mEditor.hideCursorAndSpanControllers();
6596        stopTextActionMode();
6597        if (mEditor.mSelectionModifierCursorController != null) {
6598            mEditor.mSelectionModifierCursorController.resetTouchOffsets();
6599        }
6600    }
6601
6602    /**
6603     * Called by the framework in response to a text completion from
6604     * the current input method, provided by it calling
6605     * {@link InputConnection#commitCompletion
6606     * InputConnection.commitCompletion()}.  The default implementation does
6607     * nothing; text views that are supporting auto-completion should override
6608     * this to do their desired behavior.
6609     *
6610     * @param text The auto complete text the user has selected.
6611     */
6612    public void onCommitCompletion(CompletionInfo text) {
6613        // intentionally empty
6614    }
6615
6616    /**
6617     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
6618     * a dictionnary) from the current input method, provided by it calling
6619     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
6620     * implementation flashes the background of the corrected word to provide feedback to the user.
6621     *
6622     * @param info The auto correct info about the text that was corrected.
6623     */
6624    public void onCommitCorrection(CorrectionInfo info) {
6625        if (mEditor != null) mEditor.onCommitCorrection(info);
6626    }
6627
6628    public void beginBatchEdit() {
6629        if (mEditor != null) mEditor.beginBatchEdit();
6630    }
6631
6632    public void endBatchEdit() {
6633        if (mEditor != null) mEditor.endBatchEdit();
6634    }
6635
6636    /**
6637     * Called by the framework in response to a request to begin a batch
6638     * of edit operations through a call to link {@link #beginBatchEdit()}.
6639     */
6640    public void onBeginBatchEdit() {
6641        // intentionally empty
6642    }
6643
6644    /**
6645     * Called by the framework in response to a request to end a batch
6646     * of edit operations through a call to link {@link #endBatchEdit}.
6647     */
6648    public void onEndBatchEdit() {
6649        // intentionally empty
6650    }
6651
6652    /**
6653     * Called by the framework in response to a private command from the
6654     * current method, provided by it calling
6655     * {@link InputConnection#performPrivateCommand
6656     * InputConnection.performPrivateCommand()}.
6657     *
6658     * @param action The action name of the command.
6659     * @param data Any additional data for the command.  This may be null.
6660     * @return Return true if you handled the command, else false.
6661     */
6662    public boolean onPrivateIMECommand(String action, Bundle data) {
6663        return false;
6664    }
6665
6666    private void nullLayouts() {
6667        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
6668            mSavedLayout = (BoringLayout) mLayout;
6669        }
6670        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
6671            mSavedHintLayout = (BoringLayout) mHintLayout;
6672        }
6673
6674        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
6675
6676        mBoring = mHintBoring = null;
6677
6678        // Since it depends on the value of mLayout
6679        if (mEditor != null) mEditor.prepareCursorControllers();
6680    }
6681
6682    /**
6683     * Make a new Layout based on the already-measured size of the view,
6684     * on the assumption that it was measured correctly at some point.
6685     */
6686    private void assumeLayout() {
6687        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6688
6689        if (width < 1) {
6690            width = 0;
6691        }
6692
6693        int physicalWidth = width;
6694
6695        if (mHorizontallyScrolling) {
6696            width = VERY_WIDE;
6697        }
6698
6699        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
6700                      physicalWidth, false);
6701    }
6702
6703    private Layout.Alignment getLayoutAlignment() {
6704        Layout.Alignment alignment;
6705        switch (getTextAlignment()) {
6706            case TEXT_ALIGNMENT_GRAVITY:
6707                switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
6708                    case Gravity.START:
6709                        alignment = Layout.Alignment.ALIGN_NORMAL;
6710                        break;
6711                    case Gravity.END:
6712                        alignment = Layout.Alignment.ALIGN_OPPOSITE;
6713                        break;
6714                    case Gravity.LEFT:
6715                        alignment = Layout.Alignment.ALIGN_LEFT;
6716                        break;
6717                    case Gravity.RIGHT:
6718                        alignment = Layout.Alignment.ALIGN_RIGHT;
6719                        break;
6720                    case Gravity.CENTER_HORIZONTAL:
6721                        alignment = Layout.Alignment.ALIGN_CENTER;
6722                        break;
6723                    default:
6724                        alignment = Layout.Alignment.ALIGN_NORMAL;
6725                        break;
6726                }
6727                break;
6728            case TEXT_ALIGNMENT_TEXT_START:
6729                alignment = Layout.Alignment.ALIGN_NORMAL;
6730                break;
6731            case TEXT_ALIGNMENT_TEXT_END:
6732                alignment = Layout.Alignment.ALIGN_OPPOSITE;
6733                break;
6734            case TEXT_ALIGNMENT_CENTER:
6735                alignment = Layout.Alignment.ALIGN_CENTER;
6736                break;
6737            case TEXT_ALIGNMENT_VIEW_START:
6738                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6739                        Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
6740                break;
6741            case TEXT_ALIGNMENT_VIEW_END:
6742                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6743                        Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
6744                break;
6745            case TEXT_ALIGNMENT_INHERIT:
6746                // This should never happen as we have already resolved the text alignment
6747                // but better safe than sorry so we just fall through
6748            default:
6749                alignment = Layout.Alignment.ALIGN_NORMAL;
6750                break;
6751        }
6752        return alignment;
6753    }
6754
6755    /**
6756     * The width passed in is now the desired layout width,
6757     * not the full view width with padding.
6758     * {@hide}
6759     */
6760    protected void makeNewLayout(int wantWidth, int hintWidth,
6761                                 BoringLayout.Metrics boring,
6762                                 BoringLayout.Metrics hintBoring,
6763                                 int ellipsisWidth, boolean bringIntoView) {
6764        stopMarquee();
6765
6766        // Update "old" cached values
6767        mOldMaximum = mMaximum;
6768        mOldMaxMode = mMaxMode;
6769
6770        mHighlightPathBogus = true;
6771
6772        if (wantWidth < 0) {
6773            wantWidth = 0;
6774        }
6775        if (hintWidth < 0) {
6776            hintWidth = 0;
6777        }
6778
6779        Layout.Alignment alignment = getLayoutAlignment();
6780        final boolean testDirChange = mSingleLine && mLayout != null &&
6781            (alignment == Layout.Alignment.ALIGN_NORMAL ||
6782             alignment == Layout.Alignment.ALIGN_OPPOSITE);
6783        int oldDir = 0;
6784        if (testDirChange) oldDir = mLayout.getParagraphDirection(0);
6785        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
6786        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
6787                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
6788        TruncateAt effectiveEllipsize = mEllipsize;
6789        if (mEllipsize == TruncateAt.MARQUEE &&
6790                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6791            effectiveEllipsize = TruncateAt.END_SMALL;
6792        }
6793
6794        if (mTextDir == null) {
6795            mTextDir = getTextDirectionHeuristic();
6796        }
6797
6798        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
6799                effectiveEllipsize, effectiveEllipsize == mEllipsize);
6800        if (switchEllipsize) {
6801            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
6802                    TruncateAt.END : TruncateAt.MARQUEE;
6803            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
6804                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
6805        }
6806
6807        shouldEllipsize = mEllipsize != null;
6808        mHintLayout = null;
6809
6810        if (mHint != null) {
6811            if (shouldEllipsize) hintWidth = wantWidth;
6812
6813            if (hintBoring == UNKNOWN_BORING) {
6814                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
6815                                                   mHintBoring);
6816                if (hintBoring != null) {
6817                    mHintBoring = hintBoring;
6818                }
6819            }
6820
6821            if (hintBoring != null) {
6822                if (hintBoring.width <= hintWidth &&
6823                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
6824                    if (mSavedHintLayout != null) {
6825                        mHintLayout = mSavedHintLayout.
6826                                replaceOrMake(mHint, mTextPaint,
6827                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6828                                hintBoring, mIncludePad);
6829                    } else {
6830                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6831                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6832                                hintBoring, mIncludePad);
6833                    }
6834
6835                    mSavedHintLayout = (BoringLayout) mHintLayout;
6836                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
6837                    if (mSavedHintLayout != null) {
6838                        mHintLayout = mSavedHintLayout.
6839                                replaceOrMake(mHint, mTextPaint,
6840                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6841                                hintBoring, mIncludePad, mEllipsize,
6842                                ellipsisWidth);
6843                    } else {
6844                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6845                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6846                                hintBoring, mIncludePad, mEllipsize,
6847                                ellipsisWidth);
6848                    }
6849                }
6850            }
6851            // TODO: code duplication with makeSingleLayout()
6852            if (mHintLayout == null) {
6853                StaticLayout.Builder builder = StaticLayout.Builder.obtain(mHint, 0,
6854                        mHint.length(), mTextPaint, hintWidth)
6855                        .setAlignment(alignment)
6856                        .setTextDirection(mTextDir)
6857                        .setLineSpacing(mSpacingAdd, mSpacingMult)
6858                        .setIncludePad(mIncludePad)
6859                        .setBreakStrategy(mBreakStrategy)
6860                        .setHyphenationFrequency(mHyphenationFrequency);
6861                if (shouldEllipsize) {
6862                    builder.setEllipsize(mEllipsize)
6863                            .setEllipsizedWidth(ellipsisWidth)
6864                            .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6865                }
6866                mHintLayout = builder.build();
6867            }
6868        }
6869
6870        if (bringIntoView || (testDirChange && oldDir != mLayout.getParagraphDirection(0))) {
6871            registerForPreDraw();
6872        }
6873
6874        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6875            if (!compressText(ellipsisWidth)) {
6876                final int height = mLayoutParams.height;
6877                // If the size of the view does not depend on the size of the text, try to
6878                // start the marquee immediately
6879                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
6880                    startMarquee();
6881                } else {
6882                    // Defer the start of the marquee until we know our width (see setFrame())
6883                    mRestartMarquee = true;
6884                }
6885            }
6886        }
6887
6888        // CursorControllers need a non-null mLayout
6889        if (mEditor != null) mEditor.prepareCursorControllers();
6890    }
6891
6892    /**
6893     * @hide
6894     */
6895    protected Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
6896            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
6897            boolean useSaved) {
6898        Layout result = null;
6899        if (mText instanceof Spannable) {
6900            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
6901                    alignment, mTextDir, mSpacingMult, mSpacingAdd, mIncludePad,
6902                    mBreakStrategy, mHyphenationFrequency,
6903                    getKeyListener() == null ? effectiveEllipsize : null, ellipsisWidth);
6904        } else {
6905            if (boring == UNKNOWN_BORING) {
6906                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6907                if (boring != null) {
6908                    mBoring = boring;
6909                }
6910            }
6911
6912            if (boring != null) {
6913                if (boring.width <= wantWidth &&
6914                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
6915                    if (useSaved && mSavedLayout != null) {
6916                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6917                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6918                                boring, mIncludePad);
6919                    } else {
6920                        result = BoringLayout.make(mTransformed, mTextPaint,
6921                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6922                                boring, mIncludePad);
6923                    }
6924
6925                    if (useSaved) {
6926                        mSavedLayout = (BoringLayout) result;
6927                    }
6928                } else if (shouldEllipsize && boring.width <= wantWidth) {
6929                    if (useSaved && mSavedLayout != null) {
6930                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6931                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6932                                boring, mIncludePad, effectiveEllipsize,
6933                                ellipsisWidth);
6934                    } else {
6935                        result = BoringLayout.make(mTransformed, mTextPaint,
6936                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6937                                boring, mIncludePad, effectiveEllipsize,
6938                                ellipsisWidth);
6939                    }
6940                }
6941            }
6942        }
6943        if (result == null) {
6944            StaticLayout.Builder builder = StaticLayout.Builder.obtain(mTransformed,
6945                    0, mTransformed.length(), mTextPaint, wantWidth)
6946                    .setAlignment(alignment)
6947                    .setTextDirection(mTextDir)
6948                    .setLineSpacing(mSpacingAdd, mSpacingMult)
6949                    .setIncludePad(mIncludePad)
6950                    .setBreakStrategy(mBreakStrategy)
6951                    .setHyphenationFrequency(mHyphenationFrequency);
6952            if (shouldEllipsize) {
6953                builder.setEllipsize(effectiveEllipsize)
6954                        .setEllipsizedWidth(ellipsisWidth)
6955                        .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6956            }
6957            // TODO: explore always setting maxLines
6958            result = builder.build();
6959        }
6960        return result;
6961    }
6962
6963    private boolean compressText(float width) {
6964        if (isHardwareAccelerated()) return false;
6965
6966        // Only compress the text if it hasn't been compressed by the previous pass
6967        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
6968                mTextPaint.getTextScaleX() == 1.0f) {
6969            final float textWidth = mLayout.getLineWidth(0);
6970            final float overflow = (textWidth + 1.0f - width) / width;
6971            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
6972                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
6973                post(new Runnable() {
6974                    public void run() {
6975                        requestLayout();
6976                    }
6977                });
6978                return true;
6979            }
6980        }
6981
6982        return false;
6983    }
6984
6985    private static int desired(Layout layout) {
6986        int n = layout.getLineCount();
6987        CharSequence text = layout.getText();
6988        float max = 0;
6989
6990        // if any line was wrapped, we can't use it.
6991        // but it's ok for the last line not to have a newline
6992
6993        for (int i = 0; i < n - 1; i++) {
6994            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
6995                return -1;
6996        }
6997
6998        for (int i = 0; i < n; i++) {
6999            max = Math.max(max, layout.getLineWidth(i));
7000        }
7001
7002        return (int) Math.ceil(max);
7003    }
7004
7005    /**
7006     * Set whether the TextView includes extra top and bottom padding to make
7007     * room for accents that go above the normal ascent and descent.
7008     * The default is true.
7009     *
7010     * @see #getIncludeFontPadding()
7011     *
7012     * @attr ref android.R.styleable#TextView_includeFontPadding
7013     */
7014    public void setIncludeFontPadding(boolean includepad) {
7015        if (mIncludePad != includepad) {
7016            mIncludePad = includepad;
7017
7018            if (mLayout != null) {
7019                nullLayouts();
7020                requestLayout();
7021                invalidate();
7022            }
7023        }
7024    }
7025
7026    /**
7027     * Gets whether the TextView includes extra top and bottom padding to make
7028     * room for accents that go above the normal ascent and descent.
7029     *
7030     * @see #setIncludeFontPadding(boolean)
7031     *
7032     * @attr ref android.R.styleable#TextView_includeFontPadding
7033     */
7034    public boolean getIncludeFontPadding() {
7035        return mIncludePad;
7036    }
7037
7038    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
7039
7040    @Override
7041    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
7042        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
7043        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
7044        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
7045        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
7046
7047        int width;
7048        int height;
7049
7050        BoringLayout.Metrics boring = UNKNOWN_BORING;
7051        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
7052
7053        if (mTextDir == null) {
7054            mTextDir = getTextDirectionHeuristic();
7055        }
7056
7057        int des = -1;
7058        boolean fromexisting = false;
7059
7060        if (widthMode == MeasureSpec.EXACTLY) {
7061            // Parent has told us how big to be. So be it.
7062            width = widthSize;
7063        } else {
7064            if (mLayout != null && mEllipsize == null) {
7065                des = desired(mLayout);
7066            }
7067
7068            if (des < 0) {
7069                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
7070                if (boring != null) {
7071                    mBoring = boring;
7072                }
7073            } else {
7074                fromexisting = true;
7075            }
7076
7077            if (boring == null || boring == UNKNOWN_BORING) {
7078                if (des < 0) {
7079                    des = (int) Math.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
7080                }
7081                width = des;
7082            } else {
7083                width = boring.width;
7084            }
7085
7086            final Drawables dr = mDrawables;
7087            if (dr != null) {
7088                width = Math.max(width, dr.mDrawableWidthTop);
7089                width = Math.max(width, dr.mDrawableWidthBottom);
7090            }
7091
7092            if (mHint != null) {
7093                int hintDes = -1;
7094                int hintWidth;
7095
7096                if (mHintLayout != null && mEllipsize == null) {
7097                    hintDes = desired(mHintLayout);
7098                }
7099
7100                if (hintDes < 0) {
7101                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
7102                    if (hintBoring != null) {
7103                        mHintBoring = hintBoring;
7104                    }
7105                }
7106
7107                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
7108                    if (hintDes < 0) {
7109                        hintDes = (int) Math.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
7110                    }
7111                    hintWidth = hintDes;
7112                } else {
7113                    hintWidth = hintBoring.width;
7114                }
7115
7116                if (hintWidth > width) {
7117                    width = hintWidth;
7118                }
7119            }
7120
7121            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
7122
7123            if (mMaxWidthMode == EMS) {
7124                width = Math.min(width, mMaxWidth * getLineHeight());
7125            } else {
7126                width = Math.min(width, mMaxWidth);
7127            }
7128
7129            if (mMinWidthMode == EMS) {
7130                width = Math.max(width, mMinWidth * getLineHeight());
7131            } else {
7132                width = Math.max(width, mMinWidth);
7133            }
7134
7135            // Check against our minimum width
7136            width = Math.max(width, getSuggestedMinimumWidth());
7137
7138            if (widthMode == MeasureSpec.AT_MOST) {
7139                width = Math.min(widthSize, width);
7140            }
7141        }
7142
7143        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
7144        int unpaddedWidth = want;
7145
7146        if (mHorizontallyScrolling) want = VERY_WIDE;
7147
7148        int hintWant = want;
7149        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
7150
7151        if (mLayout == null) {
7152            makeNewLayout(want, hintWant, boring, hintBoring,
7153                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7154        } else {
7155            final boolean layoutChanged = (mLayout.getWidth() != want) ||
7156                    (hintWidth != hintWant) ||
7157                    (mLayout.getEllipsizedWidth() !=
7158                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
7159
7160            final boolean widthChanged = (mHint == null) &&
7161                    (mEllipsize == null) &&
7162                    (want > mLayout.getWidth()) &&
7163                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
7164
7165            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
7166
7167            if (layoutChanged || maximumChanged) {
7168                if (!maximumChanged && widthChanged) {
7169                    mLayout.increaseWidthTo(want);
7170                } else {
7171                    makeNewLayout(want, hintWant, boring, hintBoring,
7172                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7173                }
7174            } else {
7175                // Nothing has changed
7176            }
7177        }
7178
7179        if (heightMode == MeasureSpec.EXACTLY) {
7180            // Parent has told us how big to be. So be it.
7181            height = heightSize;
7182            mDesiredHeightAtMeasure = -1;
7183        } else {
7184            int desired = getDesiredHeight();
7185
7186            height = desired;
7187            mDesiredHeightAtMeasure = desired;
7188
7189            if (heightMode == MeasureSpec.AT_MOST) {
7190                height = Math.min(desired, heightSize);
7191            }
7192        }
7193
7194        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
7195        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
7196            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
7197        }
7198
7199        /*
7200         * We didn't let makeNewLayout() register to bring the cursor into view,
7201         * so do it here if there is any possibility that it is needed.
7202         */
7203        if (mMovement != null ||
7204            mLayout.getWidth() > unpaddedWidth ||
7205            mLayout.getHeight() > unpaddedHeight) {
7206            registerForPreDraw();
7207        } else {
7208            scrollTo(0, 0);
7209        }
7210
7211        setMeasuredDimension(width, height);
7212    }
7213
7214    private int getDesiredHeight() {
7215        return Math.max(
7216                getDesiredHeight(mLayout, true),
7217                getDesiredHeight(mHintLayout, mEllipsize != null));
7218    }
7219
7220    private int getDesiredHeight(Layout layout, boolean cap) {
7221        if (layout == null) {
7222            return 0;
7223        }
7224
7225        int linecount = layout.getLineCount();
7226        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
7227        int desired = layout.getLineTop(linecount);
7228
7229        final Drawables dr = mDrawables;
7230        if (dr != null) {
7231            desired = Math.max(desired, dr.mDrawableHeightLeft);
7232            desired = Math.max(desired, dr.mDrawableHeightRight);
7233        }
7234
7235        desired += pad;
7236
7237        if (mMaxMode == LINES) {
7238            /*
7239             * Don't cap the hint to a certain number of lines.
7240             * (Do cap it, though, if we have a maximum pixel height.)
7241             */
7242            if (cap) {
7243                if (linecount > mMaximum) {
7244                    desired = layout.getLineTop(mMaximum);
7245
7246                    if (dr != null) {
7247                        desired = Math.max(desired, dr.mDrawableHeightLeft);
7248                        desired = Math.max(desired, dr.mDrawableHeightRight);
7249                    }
7250
7251                    desired += pad;
7252                    linecount = mMaximum;
7253                }
7254            }
7255        } else {
7256            desired = Math.min(desired, mMaximum);
7257        }
7258
7259        if (mMinMode == LINES) {
7260            if (linecount < mMinimum) {
7261                desired += getLineHeight() * (mMinimum - linecount);
7262            }
7263        } else {
7264            desired = Math.max(desired, mMinimum);
7265        }
7266
7267        // Check against our minimum height
7268        desired = Math.max(desired, getSuggestedMinimumHeight());
7269
7270        return desired;
7271    }
7272
7273    /**
7274     * Check whether a change to the existing text layout requires a
7275     * new view layout.
7276     */
7277    private void checkForResize() {
7278        boolean sizeChanged = false;
7279
7280        if (mLayout != null) {
7281            // Check if our width changed
7282            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
7283                sizeChanged = true;
7284                invalidate();
7285            }
7286
7287            // Check if our height changed
7288            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
7289                int desiredHeight = getDesiredHeight();
7290
7291                if (desiredHeight != this.getHeight()) {
7292                    sizeChanged = true;
7293                }
7294            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
7295                if (mDesiredHeightAtMeasure >= 0) {
7296                    int desiredHeight = getDesiredHeight();
7297
7298                    if (desiredHeight != mDesiredHeightAtMeasure) {
7299                        sizeChanged = true;
7300                    }
7301                }
7302            }
7303        }
7304
7305        if (sizeChanged) {
7306            requestLayout();
7307            // caller will have already invalidated
7308        }
7309    }
7310
7311    /**
7312     * Check whether entirely new text requires a new view layout
7313     * or merely a new text layout.
7314     */
7315    private void checkForRelayout() {
7316        // If we have a fixed width, we can just swap in a new text layout
7317        // if the text height stays the same or if the view height is fixed.
7318
7319        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
7320                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
7321                (mHint == null || mHintLayout != null) &&
7322                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
7323            // Static width, so try making a new text layout.
7324
7325            int oldht = mLayout.getHeight();
7326            int want = mLayout.getWidth();
7327            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
7328
7329            /*
7330             * No need to bring the text into view, since the size is not
7331             * changing (unless we do the requestLayout(), in which case it
7332             * will happen at measure).
7333             */
7334            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
7335                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
7336                          false);
7337
7338            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
7339                // In a fixed-height view, so use our new text layout.
7340                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
7341                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
7342                    invalidate();
7343                    return;
7344                }
7345
7346                // Dynamic height, but height has stayed the same,
7347                // so use our new text layout.
7348                if (mLayout.getHeight() == oldht &&
7349                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
7350                    invalidate();
7351                    return;
7352                }
7353            }
7354
7355            // We lose: the height has changed and we have a dynamic height.
7356            // Request a new view layout using our new text layout.
7357            requestLayout();
7358            invalidate();
7359        } else {
7360            // Dynamic width, so we have no choice but to request a new
7361            // view layout with a new text layout.
7362            nullLayouts();
7363            requestLayout();
7364            invalidate();
7365        }
7366    }
7367
7368    @Override
7369    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
7370        super.onLayout(changed, left, top, right, bottom);
7371        if (mDeferScroll >= 0) {
7372            int curs = mDeferScroll;
7373            mDeferScroll = -1;
7374            bringPointIntoView(Math.min(curs, mText.length()));
7375        }
7376    }
7377
7378    private boolean isShowingHint() {
7379        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
7380    }
7381
7382    /**
7383     * Returns true if anything changed.
7384     */
7385    private boolean bringTextIntoView() {
7386        Layout layout = isShowingHint() ? mHintLayout : mLayout;
7387        int line = 0;
7388        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7389            line = layout.getLineCount() - 1;
7390        }
7391
7392        Layout.Alignment a = layout.getParagraphAlignment(line);
7393        int dir = layout.getParagraphDirection(line);
7394        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7395        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7396        int ht = layout.getHeight();
7397
7398        int scrollx, scrolly;
7399
7400        // Convert to left, center, or right alignment.
7401        if (a == Layout.Alignment.ALIGN_NORMAL) {
7402            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
7403                Layout.Alignment.ALIGN_RIGHT;
7404        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
7405            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
7406                Layout.Alignment.ALIGN_LEFT;
7407        }
7408
7409        if (a == Layout.Alignment.ALIGN_CENTER) {
7410            /*
7411             * Keep centered if possible, or, if it is too wide to fit,
7412             * keep leading edge in view.
7413             */
7414
7415            int left = (int) Math.floor(layout.getLineLeft(line));
7416            int right = (int) Math.ceil(layout.getLineRight(line));
7417
7418            if (right - left < hspace) {
7419                scrollx = (right + left) / 2 - hspace / 2;
7420            } else {
7421                if (dir < 0) {
7422                    scrollx = right - hspace;
7423                } else {
7424                    scrollx = left;
7425                }
7426            }
7427        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
7428            int right = (int) Math.ceil(layout.getLineRight(line));
7429            scrollx = right - hspace;
7430        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
7431            scrollx = (int) Math.floor(layout.getLineLeft(line));
7432        }
7433
7434        if (ht < vspace) {
7435            scrolly = 0;
7436        } else {
7437            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7438                scrolly = ht - vspace;
7439            } else {
7440                scrolly = 0;
7441            }
7442        }
7443
7444        if (scrollx != mScrollX || scrolly != mScrollY) {
7445            scrollTo(scrollx, scrolly);
7446            return true;
7447        } else {
7448            return false;
7449        }
7450    }
7451
7452    /**
7453     * Move the point, specified by the offset, into the view if it is needed.
7454     * This has to be called after layout. Returns true if anything changed.
7455     */
7456    public boolean bringPointIntoView(int offset) {
7457        if (isLayoutRequested()) {
7458            mDeferScroll = offset;
7459            return false;
7460        }
7461        boolean changed = false;
7462
7463        Layout layout = isShowingHint() ? mHintLayout: mLayout;
7464
7465        if (layout == null) return changed;
7466
7467        int line = layout.getLineForOffset(offset);
7468
7469        int grav;
7470
7471        switch (layout.getParagraphAlignment(line)) {
7472            case ALIGN_LEFT:
7473                grav = 1;
7474                break;
7475            case ALIGN_RIGHT:
7476                grav = -1;
7477                break;
7478            case ALIGN_NORMAL:
7479                grav = layout.getParagraphDirection(line);
7480                break;
7481            case ALIGN_OPPOSITE:
7482                grav = -layout.getParagraphDirection(line);
7483                break;
7484            case ALIGN_CENTER:
7485            default:
7486                grav = 0;
7487                break;
7488        }
7489
7490        // We only want to clamp the cursor to fit within the layout width
7491        // in left-to-right modes, because in a right to left alignment,
7492        // we want to scroll to keep the line-right on the screen, as other
7493        // lines are likely to have text flush with the right margin, which
7494        // we want to keep visible.
7495        // A better long-term solution would probably be to measure both
7496        // the full line and a blank-trimmed version, and, for example, use
7497        // the latter measurement for centering and right alignment, but for
7498        // the time being we only implement the cursor clamping in left to
7499        // right where it is most likely to be annoying.
7500        final boolean clamped = grav > 0;
7501        // FIXME: Is it okay to truncate this, or should we round?
7502        final int x = (int)layout.getPrimaryHorizontal(offset, clamped);
7503        final int top = layout.getLineTop(line);
7504        final int bottom = layout.getLineTop(line + 1);
7505
7506        int left = (int) Math.floor(layout.getLineLeft(line));
7507        int right = (int) Math.ceil(layout.getLineRight(line));
7508        int ht = layout.getHeight();
7509
7510        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7511        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7512        if (!mHorizontallyScrolling && right - left > hspace && right > x) {
7513            // If cursor has been clamped, make sure we don't scroll.
7514            right = Math.max(x, left + hspace);
7515        }
7516
7517        int hslack = (bottom - top) / 2;
7518        int vslack = hslack;
7519
7520        if (vslack > vspace / 4)
7521            vslack = vspace / 4;
7522        if (hslack > hspace / 4)
7523            hslack = hspace / 4;
7524
7525        int hs = mScrollX;
7526        int vs = mScrollY;
7527
7528        if (top - vs < vslack)
7529            vs = top - vslack;
7530        if (bottom - vs > vspace - vslack)
7531            vs = bottom - (vspace - vslack);
7532        if (ht - vs < vspace)
7533            vs = ht - vspace;
7534        if (0 - vs > 0)
7535            vs = 0;
7536
7537        if (grav != 0) {
7538            if (x - hs < hslack) {
7539                hs = x - hslack;
7540            }
7541            if (x - hs > hspace - hslack) {
7542                hs = x - (hspace - hslack);
7543            }
7544        }
7545
7546        if (grav < 0) {
7547            if (left - hs > 0)
7548                hs = left;
7549            if (right - hs < hspace)
7550                hs = right - hspace;
7551        } else if (grav > 0) {
7552            if (right - hs < hspace)
7553                hs = right - hspace;
7554            if (left - hs > 0)
7555                hs = left;
7556        } else /* grav == 0 */ {
7557            if (right - left <= hspace) {
7558                /*
7559                 * If the entire text fits, center it exactly.
7560                 */
7561                hs = left - (hspace - (right - left)) / 2;
7562            } else if (x > right - hslack) {
7563                /*
7564                 * If we are near the right edge, keep the right edge
7565                 * at the edge of the view.
7566                 */
7567                hs = right - hspace;
7568            } else if (x < left + hslack) {
7569                /*
7570                 * If we are near the left edge, keep the left edge
7571                 * at the edge of the view.
7572                 */
7573                hs = left;
7574            } else if (left > hs) {
7575                /*
7576                 * Is there whitespace visible at the left?  Fix it if so.
7577                 */
7578                hs = left;
7579            } else if (right < hs + hspace) {
7580                /*
7581                 * Is there whitespace visible at the right?  Fix it if so.
7582                 */
7583                hs = right - hspace;
7584            } else {
7585                /*
7586                 * Otherwise, float as needed.
7587                 */
7588                if (x - hs < hslack) {
7589                    hs = x - hslack;
7590                }
7591                if (x - hs > hspace - hslack) {
7592                    hs = x - (hspace - hslack);
7593                }
7594            }
7595        }
7596
7597        if (hs != mScrollX || vs != mScrollY) {
7598            if (mScroller == null) {
7599                scrollTo(hs, vs);
7600            } else {
7601                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
7602                int dx = hs - mScrollX;
7603                int dy = vs - mScrollY;
7604
7605                if (duration > ANIMATED_SCROLL_GAP) {
7606                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
7607                    awakenScrollBars(mScroller.getDuration());
7608                    invalidate();
7609                } else {
7610                    if (!mScroller.isFinished()) {
7611                        mScroller.abortAnimation();
7612                    }
7613
7614                    scrollBy(dx, dy);
7615                }
7616
7617                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
7618            }
7619
7620            changed = true;
7621        }
7622
7623        if (isFocused()) {
7624            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
7625            // requestRectangleOnScreen() is in terms of content coordinates.
7626
7627            // The offsets here are to ensure the rectangle we are using is
7628            // within our view bounds, in case the cursor is on the far left
7629            // or right.  If it isn't withing the bounds, then this request
7630            // will be ignored.
7631            if (mTempRect == null) mTempRect = new Rect();
7632            mTempRect.set(x - 2, top, x + 2, bottom);
7633            getInterestingRect(mTempRect, line);
7634            mTempRect.offset(mScrollX, mScrollY);
7635
7636            if (requestRectangleOnScreen(mTempRect)) {
7637                changed = true;
7638            }
7639        }
7640
7641        return changed;
7642    }
7643
7644    /**
7645     * Move the cursor, if needed, so that it is at an offset that is visible
7646     * to the user.  This will not move the cursor if it represents more than
7647     * one character (a selection range).  This will only work if the
7648     * TextView contains spannable text; otherwise it will do nothing.
7649     *
7650     * @return True if the cursor was actually moved, false otherwise.
7651     */
7652    public boolean moveCursorToVisibleOffset() {
7653        if (!(mText instanceof Spannable)) {
7654            return false;
7655        }
7656        int start = getSelectionStart();
7657        int end = getSelectionEnd();
7658        if (start != end) {
7659            return false;
7660        }
7661
7662        // First: make sure the line is visible on screen:
7663
7664        int line = mLayout.getLineForOffset(start);
7665
7666        final int top = mLayout.getLineTop(line);
7667        final int bottom = mLayout.getLineTop(line + 1);
7668        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7669        int vslack = (bottom - top) / 2;
7670        if (vslack > vspace / 4)
7671            vslack = vspace / 4;
7672        final int vs = mScrollY;
7673
7674        if (top < (vs+vslack)) {
7675            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
7676        } else if (bottom > (vspace+vs-vslack)) {
7677            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
7678        }
7679
7680        // Next: make sure the character is visible on screen:
7681
7682        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7683        final int hs = mScrollX;
7684        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
7685        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
7686
7687        // line might contain bidirectional text
7688        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
7689        final int highChar = leftChar > rightChar ? leftChar : rightChar;
7690
7691        int newStart = start;
7692        if (newStart < lowChar) {
7693            newStart = lowChar;
7694        } else if (newStart > highChar) {
7695            newStart = highChar;
7696        }
7697
7698        if (newStart != start) {
7699            Selection.setSelection((Spannable)mText, newStart);
7700            return true;
7701        }
7702
7703        return false;
7704    }
7705
7706    @Override
7707    public void computeScroll() {
7708        if (mScroller != null) {
7709            if (mScroller.computeScrollOffset()) {
7710                mScrollX = mScroller.getCurrX();
7711                mScrollY = mScroller.getCurrY();
7712                invalidateParentCaches();
7713                postInvalidate();  // So we draw again
7714            }
7715        }
7716    }
7717
7718    private void getInterestingRect(Rect r, int line) {
7719        convertFromViewportToContentCoordinates(r);
7720
7721        // Rectangle can can be expanded on first and last line to take
7722        // padding into account.
7723        // TODO Take left/right padding into account too?
7724        if (line == 0) r.top -= getExtendedPaddingTop();
7725        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
7726    }
7727
7728    private void convertFromViewportToContentCoordinates(Rect r) {
7729        final int horizontalOffset = viewportToContentHorizontalOffset();
7730        r.left += horizontalOffset;
7731        r.right += horizontalOffset;
7732
7733        final int verticalOffset = viewportToContentVerticalOffset();
7734        r.top += verticalOffset;
7735        r.bottom += verticalOffset;
7736    }
7737
7738    int viewportToContentHorizontalOffset() {
7739        return getCompoundPaddingLeft() - mScrollX;
7740    }
7741
7742    int viewportToContentVerticalOffset() {
7743        int offset = getExtendedPaddingTop() - mScrollY;
7744        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
7745            offset += getVerticalOffset(false);
7746        }
7747        return offset;
7748    }
7749
7750    @Override
7751    public void debug(int depth) {
7752        super.debug(depth);
7753
7754        String output = debugIndent(depth);
7755        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
7756                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
7757                + "} ";
7758
7759        if (mText != null) {
7760
7761            output += "mText=\"" + mText + "\" ";
7762            if (mLayout != null) {
7763                output += "mLayout width=" + mLayout.getWidth()
7764                        + " height=" + mLayout.getHeight();
7765            }
7766        } else {
7767            output += "mText=NULL";
7768        }
7769        Log.d(VIEW_LOG_TAG, output);
7770    }
7771
7772    /**
7773     * Convenience for {@link Selection#getSelectionStart}.
7774     */
7775    @ViewDebug.ExportedProperty(category = "text")
7776    public int getSelectionStart() {
7777        return Selection.getSelectionStart(getText());
7778    }
7779
7780    /**
7781     * Convenience for {@link Selection#getSelectionEnd}.
7782     */
7783    @ViewDebug.ExportedProperty(category = "text")
7784    public int getSelectionEnd() {
7785        return Selection.getSelectionEnd(getText());
7786    }
7787
7788    /**
7789     * Return true iff there is a selection inside this text view.
7790     */
7791    public boolean hasSelection() {
7792        final int selectionStart = getSelectionStart();
7793        final int selectionEnd = getSelectionEnd();
7794
7795        return selectionStart >= 0 && selectionStart != selectionEnd;
7796    }
7797
7798    String getSelectedText() {
7799        if (!hasSelection()) {
7800            return null;
7801        }
7802
7803        final int start = getSelectionStart();
7804        final int end = getSelectionEnd();
7805        return String.valueOf(
7806                start > end ? mText.subSequence(end, start) : mText.subSequence(start, end));
7807    }
7808
7809    /**
7810     * Sets the properties of this field (lines, horizontally scrolling,
7811     * transformation method) to be for a single-line input.
7812     *
7813     * @attr ref android.R.styleable#TextView_singleLine
7814     */
7815    public void setSingleLine() {
7816        setSingleLine(true);
7817    }
7818
7819    /**
7820     * Sets the properties of this field to transform input to ALL CAPS
7821     * display. This may use a "small caps" formatting if available.
7822     * This setting will be ignored if this field is editable or selectable.
7823     *
7824     * This call replaces the current transformation method. Disabling this
7825     * will not necessarily restore the previous behavior from before this
7826     * was enabled.
7827     *
7828     * @see #setTransformationMethod(TransformationMethod)
7829     * @attr ref android.R.styleable#TextView_textAllCaps
7830     */
7831    public void setAllCaps(boolean allCaps) {
7832        if (allCaps) {
7833            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
7834        } else {
7835            setTransformationMethod(null);
7836        }
7837    }
7838
7839    /**
7840     * If true, sets the properties of this field (number of lines, horizontally scrolling,
7841     * transformation method) to be for a single-line input; if false, restores these to the default
7842     * conditions.
7843     *
7844     * Note that the default conditions are not necessarily those that were in effect prior this
7845     * method, and you may want to reset these properties to your custom values.
7846     *
7847     * @attr ref android.R.styleable#TextView_singleLine
7848     */
7849    @android.view.RemotableViewMethod
7850    public void setSingleLine(boolean singleLine) {
7851        // Could be used, but may break backward compatibility.
7852        // if (mSingleLine == singleLine) return;
7853        setInputTypeSingleLine(singleLine);
7854        applySingleLine(singleLine, true, true);
7855    }
7856
7857    /**
7858     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
7859     * @param singleLine
7860     */
7861    private void setInputTypeSingleLine(boolean singleLine) {
7862        if (mEditor != null &&
7863                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
7864            if (singleLine) {
7865                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7866            } else {
7867                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7868            }
7869        }
7870    }
7871
7872    private void applySingleLine(boolean singleLine, boolean applyTransformation,
7873            boolean changeMaxLines) {
7874        mSingleLine = singleLine;
7875        if (singleLine) {
7876            setLines(1);
7877            setHorizontallyScrolling(true);
7878            if (applyTransformation) {
7879                setTransformationMethod(SingleLineTransformationMethod.getInstance());
7880            }
7881        } else {
7882            if (changeMaxLines) {
7883                setMaxLines(Integer.MAX_VALUE);
7884            }
7885            setHorizontallyScrolling(false);
7886            if (applyTransformation) {
7887                setTransformationMethod(null);
7888            }
7889        }
7890    }
7891
7892    /**
7893     * Causes words in the text that are longer than the view's width
7894     * to be ellipsized instead of broken in the middle.  You may also
7895     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
7896     * to constrain the text to a single line.  Use <code>null</code>
7897     * to turn off ellipsizing.
7898     *
7899     * If {@link #setMaxLines} has been used to set two or more lines,
7900     * only {@link android.text.TextUtils.TruncateAt#END} and
7901     * {@link android.text.TextUtils.TruncateAt#MARQUEE} are supported
7902     * (other ellipsizing types will not do anything).
7903     *
7904     * @attr ref android.R.styleable#TextView_ellipsize
7905     */
7906    public void setEllipsize(TextUtils.TruncateAt where) {
7907        // TruncateAt is an enum. != comparison is ok between these singleton objects.
7908        if (mEllipsize != where) {
7909            mEllipsize = where;
7910
7911            if (mLayout != null) {
7912                nullLayouts();
7913                requestLayout();
7914                invalidate();
7915            }
7916        }
7917    }
7918
7919    /**
7920     * Sets how many times to repeat the marquee animation. Only applied if the
7921     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
7922     *
7923     * @see #getMarqueeRepeatLimit()
7924     *
7925     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7926     */
7927    public void setMarqueeRepeatLimit(int marqueeLimit) {
7928        mMarqueeRepeatLimit = marqueeLimit;
7929    }
7930
7931    /**
7932     * Gets the number of times the marquee animation is repeated. Only meaningful if the
7933     * TextView has marquee enabled.
7934     *
7935     * @return the number of times the marquee animation is repeated. -1 if the animation
7936     * repeats indefinitely
7937     *
7938     * @see #setMarqueeRepeatLimit(int)
7939     *
7940     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7941     */
7942    public int getMarqueeRepeatLimit() {
7943        return mMarqueeRepeatLimit;
7944    }
7945
7946    /**
7947     * Returns where, if anywhere, words that are longer than the view
7948     * is wide should be ellipsized.
7949     */
7950    @ViewDebug.ExportedProperty
7951    public TextUtils.TruncateAt getEllipsize() {
7952        return mEllipsize;
7953    }
7954
7955    /**
7956     * Set the TextView so that when it takes focus, all the text is
7957     * selected.
7958     *
7959     * @attr ref android.R.styleable#TextView_selectAllOnFocus
7960     */
7961    @android.view.RemotableViewMethod
7962    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
7963        createEditorIfNeeded();
7964        mEditor.mSelectAllOnFocus = selectAllOnFocus;
7965
7966        if (selectAllOnFocus && !(mText instanceof Spannable)) {
7967            setText(mText, BufferType.SPANNABLE);
7968        }
7969    }
7970
7971    /**
7972     * Set whether the cursor is visible. The default is true. Note that this property only
7973     * makes sense for editable TextView.
7974     *
7975     * @see #isCursorVisible()
7976     *
7977     * @attr ref android.R.styleable#TextView_cursorVisible
7978     */
7979    @android.view.RemotableViewMethod
7980    public void setCursorVisible(boolean visible) {
7981        if (visible && mEditor == null) return; // visible is the default value with no edit data
7982        createEditorIfNeeded();
7983        if (mEditor.mCursorVisible != visible) {
7984            mEditor.mCursorVisible = visible;
7985            invalidate();
7986
7987            mEditor.makeBlink();
7988
7989            // InsertionPointCursorController depends on mCursorVisible
7990            mEditor.prepareCursorControllers();
7991        }
7992    }
7993
7994    /**
7995     * @return whether or not the cursor is visible (assuming this TextView is editable)
7996     *
7997     * @see #setCursorVisible(boolean)
7998     *
7999     * @attr ref android.R.styleable#TextView_cursorVisible
8000     */
8001    public boolean isCursorVisible() {
8002        // true is the default value
8003        return mEditor == null ? true : mEditor.mCursorVisible;
8004    }
8005
8006    private boolean canMarquee() {
8007        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
8008        return width > 0 && (mLayout.getLineWidth(0) > width ||
8009                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
8010                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
8011    }
8012
8013    private void startMarquee() {
8014        // Do not ellipsize EditText
8015        if (getKeyListener() != null) return;
8016
8017        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
8018            return;
8019        }
8020
8021        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
8022                getLineCount() == 1 && canMarquee()) {
8023
8024            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8025                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
8026                final Layout tmp = mLayout;
8027                mLayout = mSavedMarqueeModeLayout;
8028                mSavedMarqueeModeLayout = tmp;
8029                setHorizontalFadingEdgeEnabled(true);
8030                requestLayout();
8031                invalidate();
8032            }
8033
8034            if (mMarquee == null) mMarquee = new Marquee(this);
8035            mMarquee.start(mMarqueeRepeatLimit);
8036        }
8037    }
8038
8039    private void stopMarquee() {
8040        if (mMarquee != null && !mMarquee.isStopped()) {
8041            mMarquee.stop();
8042        }
8043
8044        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
8045            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
8046            final Layout tmp = mSavedMarqueeModeLayout;
8047            mSavedMarqueeModeLayout = mLayout;
8048            mLayout = tmp;
8049            setHorizontalFadingEdgeEnabled(false);
8050            requestLayout();
8051            invalidate();
8052        }
8053    }
8054
8055    private void startStopMarquee(boolean start) {
8056        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8057            if (start) {
8058                startMarquee();
8059            } else {
8060                stopMarquee();
8061            }
8062        }
8063    }
8064
8065    /**
8066     * This method is called when the text is changed, in case any subclasses
8067     * would like to know.
8068     *
8069     * Within <code>text</code>, the <code>lengthAfter</code> characters
8070     * beginning at <code>start</code> have just replaced old text that had
8071     * length <code>lengthBefore</code>. It is an error to attempt to make
8072     * changes to <code>text</code> from this callback.
8073     *
8074     * @param text The text the TextView is displaying
8075     * @param start The offset of the start of the range of the text that was
8076     * modified
8077     * @param lengthBefore The length of the former text that has been replaced
8078     * @param lengthAfter The length of the replacement modified text
8079     */
8080    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
8081        // intentionally empty, template pattern method can be overridden by subclasses
8082    }
8083
8084    /**
8085     * This method is called when the selection has changed, in case any
8086     * subclasses would like to know.
8087     *
8088     * @param selStart The new selection start location.
8089     * @param selEnd The new selection end location.
8090     */
8091    protected void onSelectionChanged(int selStart, int selEnd) {
8092        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
8093    }
8094
8095    /**
8096     * Adds a TextWatcher to the list of those whose methods are called
8097     * whenever this TextView's text changes.
8098     * <p>
8099     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
8100     * not called after {@link #setText} calls.  Now, doing {@link #setText}
8101     * if there are any text changed listeners forces the buffer type to
8102     * Editable if it would not otherwise be and does call this method.
8103     */
8104    public void addTextChangedListener(TextWatcher watcher) {
8105        if (mListeners == null) {
8106            mListeners = new ArrayList<TextWatcher>();
8107        }
8108
8109        mListeners.add(watcher);
8110    }
8111
8112    /**
8113     * Removes the specified TextWatcher from the list of those whose
8114     * methods are called
8115     * whenever this TextView's text changes.
8116     */
8117    public void removeTextChangedListener(TextWatcher watcher) {
8118        if (mListeners != null) {
8119            int i = mListeners.indexOf(watcher);
8120
8121            if (i >= 0) {
8122                mListeners.remove(i);
8123            }
8124        }
8125    }
8126
8127    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
8128        if (mListeners != null) {
8129            final ArrayList<TextWatcher> list = mListeners;
8130            final int count = list.size();
8131            for (int i = 0; i < count; i++) {
8132                list.get(i).beforeTextChanged(text, start, before, after);
8133            }
8134        }
8135
8136        // The spans that are inside or intersect the modified region no longer make sense
8137        removeIntersectingNonAdjacentSpans(start, start + before, SpellCheckSpan.class);
8138        removeIntersectingNonAdjacentSpans(start, start + before, SuggestionSpan.class);
8139    }
8140
8141    // Removes all spans that are inside or actually overlap the start..end range
8142    private <T> void removeIntersectingNonAdjacentSpans(int start, int end, Class<T> type) {
8143        if (!(mText instanceof Editable)) return;
8144        Editable text = (Editable) mText;
8145
8146        T[] spans = text.getSpans(start, end, type);
8147        final int length = spans.length;
8148        for (int i = 0; i < length; i++) {
8149            final int spanStart = text.getSpanStart(spans[i]);
8150            final int spanEnd = text.getSpanEnd(spans[i]);
8151            if (spanEnd == start || spanStart == end) break;
8152            text.removeSpan(spans[i]);
8153        }
8154    }
8155
8156    void removeAdjacentSuggestionSpans(final int pos) {
8157        if (!(mText instanceof Editable)) return;
8158        final Editable text = (Editable) mText;
8159
8160        final SuggestionSpan[] spans = text.getSpans(pos, pos, SuggestionSpan.class);
8161        final int length = spans.length;
8162        for (int i = 0; i < length; i++) {
8163            final int spanStart = text.getSpanStart(spans[i]);
8164            final int spanEnd = text.getSpanEnd(spans[i]);
8165            if (spanEnd == pos || spanStart == pos) {
8166                if (SpellChecker.haveWordBoundariesChanged(text, pos, pos, spanStart, spanEnd)) {
8167                    text.removeSpan(spans[i]);
8168                }
8169            }
8170        }
8171    }
8172
8173    /**
8174     * Not private so it can be called from an inner class without going
8175     * through a thunk.
8176     */
8177    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
8178        if (mListeners != null) {
8179            final ArrayList<TextWatcher> list = mListeners;
8180            final int count = list.size();
8181            for (int i = 0; i < count; i++) {
8182                list.get(i).onTextChanged(text, start, before, after);
8183            }
8184        }
8185
8186        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
8187    }
8188
8189    /**
8190     * Not private so it can be called from an inner class without going
8191     * through a thunk.
8192     */
8193    void sendAfterTextChanged(Editable text) {
8194        if (mListeners != null) {
8195            final ArrayList<TextWatcher> list = mListeners;
8196            final int count = list.size();
8197            for (int i = 0; i < count; i++) {
8198                list.get(i).afterTextChanged(text);
8199            }
8200        }
8201        hideErrorIfUnchanged();
8202    }
8203
8204    void updateAfterEdit() {
8205        invalidate();
8206        int curs = getSelectionStart();
8207
8208        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
8209            registerForPreDraw();
8210        }
8211
8212        checkForResize();
8213
8214        if (curs >= 0) {
8215            mHighlightPathBogus = true;
8216            if (mEditor != null) mEditor.makeBlink();
8217            bringPointIntoView(curs);
8218        }
8219    }
8220
8221    /**
8222     * Not private so it can be called from an inner class without going
8223     * through a thunk.
8224     */
8225    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
8226        sLastCutCopyOrTextChangedTime = 0;
8227
8228        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8229        if (ims == null || ims.mBatchEditNesting == 0) {
8230            updateAfterEdit();
8231        }
8232        if (ims != null) {
8233            ims.mContentChanged = true;
8234            if (ims.mChangedStart < 0) {
8235                ims.mChangedStart = start;
8236                ims.mChangedEnd = start+before;
8237            } else {
8238                ims.mChangedStart = Math.min(ims.mChangedStart, start);
8239                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
8240            }
8241            ims.mChangedDelta += after-before;
8242        }
8243        resetErrorChangedFlag();
8244        sendOnTextChanged(buffer, start, before, after);
8245        onTextChanged(buffer, start, before, after);
8246    }
8247
8248    /**
8249     * Not private so it can be called from an inner class without going
8250     * through a thunk.
8251     */
8252    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
8253        // XXX Make the start and end move together if this ends up
8254        // spending too much time invalidating.
8255
8256        boolean selChanged = false;
8257        int newSelStart=-1, newSelEnd=-1;
8258
8259        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8260
8261        if (what == Selection.SELECTION_END) {
8262            selChanged = true;
8263            newSelEnd = newStart;
8264
8265            if (oldStart >= 0 || newStart >= 0) {
8266                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
8267                checkForResize();
8268                registerForPreDraw();
8269                if (mEditor != null) mEditor.makeBlink();
8270            }
8271        }
8272
8273        if (what == Selection.SELECTION_START) {
8274            selChanged = true;
8275            newSelStart = newStart;
8276
8277            if (oldStart >= 0 || newStart >= 0) {
8278                int end = Selection.getSelectionEnd(buf);
8279                invalidateCursor(end, oldStart, newStart);
8280            }
8281        }
8282
8283        if (selChanged) {
8284            mHighlightPathBogus = true;
8285            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
8286
8287            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
8288                if (newSelStart < 0) {
8289                    newSelStart = Selection.getSelectionStart(buf);
8290                }
8291                if (newSelEnd < 0) {
8292                    newSelEnd = Selection.getSelectionEnd(buf);
8293                }
8294
8295                if (mEditor != null) {
8296                    mEditor.refreshTextActionMode();
8297                    if (!hasSelection() && mEditor.mTextActionMode == null && hasTransientState()) {
8298                        // User generated selection has been removed.
8299                        setHasTransientState(false);
8300                    }
8301                }
8302                onSelectionChanged(newSelStart, newSelEnd);
8303            }
8304        }
8305
8306        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
8307                what instanceof CharacterStyle) {
8308            if (ims == null || ims.mBatchEditNesting == 0) {
8309                invalidate();
8310                mHighlightPathBogus = true;
8311                checkForResize();
8312            } else {
8313                ims.mContentChanged = true;
8314            }
8315            if (mEditor != null) {
8316                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
8317                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
8318                mEditor.invalidateHandlesAndActionMode();
8319            }
8320        }
8321
8322        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
8323            mHighlightPathBogus = true;
8324            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
8325                ims.mSelectionModeChanged = true;
8326            }
8327
8328            if (Selection.getSelectionStart(buf) >= 0) {
8329                if (ims == null || ims.mBatchEditNesting == 0) {
8330                    invalidateCursor();
8331                } else {
8332                    ims.mCursorChanged = true;
8333                }
8334            }
8335        }
8336
8337        if (what instanceof ParcelableSpan) {
8338            // If this is a span that can be sent to a remote process,
8339            // the current extract editor would be interested in it.
8340            if (ims != null && ims.mExtractedTextRequest != null) {
8341                if (ims.mBatchEditNesting != 0) {
8342                    if (oldStart >= 0) {
8343                        if (ims.mChangedStart > oldStart) {
8344                            ims.mChangedStart = oldStart;
8345                        }
8346                        if (ims.mChangedStart > oldEnd) {
8347                            ims.mChangedStart = oldEnd;
8348                        }
8349                    }
8350                    if (newStart >= 0) {
8351                        if (ims.mChangedStart > newStart) {
8352                            ims.mChangedStart = newStart;
8353                        }
8354                        if (ims.mChangedStart > newEnd) {
8355                            ims.mChangedStart = newEnd;
8356                        }
8357                    }
8358                } else {
8359                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
8360                            + oldStart + "-" + oldEnd + ","
8361                            + newStart + "-" + newEnd + " " + what);
8362                    ims.mContentChanged = true;
8363                }
8364            }
8365        }
8366
8367        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
8368                what instanceof SpellCheckSpan) {
8369            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
8370        }
8371    }
8372
8373    @Override
8374    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
8375        if (isTemporarilyDetached()) {
8376            // If we are temporarily in the detach state, then do nothing.
8377            super.onFocusChanged(focused, direction, previouslyFocusedRect);
8378            return;
8379        }
8380
8381        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
8382
8383        if (focused) {
8384            if (mText instanceof Spannable) {
8385                Spannable sp = (Spannable) mText;
8386                MetaKeyKeyListener.resetMetaState(sp);
8387            }
8388        }
8389
8390        startStopMarquee(focused);
8391
8392        if (mTransformation != null) {
8393            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
8394        }
8395
8396        super.onFocusChanged(focused, direction, previouslyFocusedRect);
8397    }
8398
8399    @Override
8400    public void onWindowFocusChanged(boolean hasWindowFocus) {
8401        super.onWindowFocusChanged(hasWindowFocus);
8402
8403        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
8404
8405        startStopMarquee(hasWindowFocus);
8406    }
8407
8408    @Override
8409    protected void onVisibilityChanged(View changedView, int visibility) {
8410        super.onVisibilityChanged(changedView, visibility);
8411        if (mEditor != null && visibility != VISIBLE) {
8412            mEditor.hideCursorAndSpanControllers();
8413            stopTextActionMode();
8414        }
8415    }
8416
8417    /**
8418     * Use {@link BaseInputConnection#removeComposingSpans
8419     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
8420     * state from this text view.
8421     */
8422    public void clearComposingText() {
8423        if (mText instanceof Spannable) {
8424            BaseInputConnection.removeComposingSpans((Spannable)mText);
8425        }
8426    }
8427
8428    @Override
8429    public void setSelected(boolean selected) {
8430        boolean wasSelected = isSelected();
8431
8432        super.setSelected(selected);
8433
8434        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8435            if (selected) {
8436                startMarquee();
8437            } else {
8438                stopMarquee();
8439            }
8440        }
8441    }
8442
8443    @Override
8444    public boolean onTouchEvent(MotionEvent event) {
8445        final int action = event.getActionMasked();
8446        if (mEditor != null) {
8447            mEditor.onTouchEvent(event);
8448
8449            if (mEditor.mSelectionModifierCursorController != null &&
8450                    mEditor.mSelectionModifierCursorController.isDragAcceleratorActive()) {
8451                return true;
8452            }
8453        }
8454
8455        final boolean superResult = super.onTouchEvent(event);
8456
8457        /*
8458         * Don't handle the release after a long press, because it will move the selection away from
8459         * whatever the menu action was trying to affect. If the long press should have triggered an
8460         * insertion action mode, we can now actually show it.
8461         */
8462        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
8463            mEditor.mDiscardNextActionUp = false;
8464
8465            if (mEditor.mIsInsertionActionModeStartPending) {
8466                mEditor.startInsertionActionMode();
8467                mEditor.mIsInsertionActionModeStartPending = false;
8468            }
8469            return superResult;
8470        }
8471
8472        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
8473                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
8474
8475         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
8476                && mText instanceof Spannable && mLayout != null) {
8477            boolean handled = false;
8478
8479            if (mMovement != null) {
8480                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
8481            }
8482
8483            final boolean textIsSelectable = isTextSelectable();
8484            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
8485                // The LinkMovementMethod which should handle taps on links has not been installed
8486                // on non editable text that support text selection.
8487                // We reproduce its behavior here to open links for these.
8488                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
8489                        getSelectionEnd(), ClickableSpan.class);
8490
8491                if (links.length > 0) {
8492                    links[0].onClick(this);
8493                    handled = true;
8494                }
8495            }
8496
8497            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
8498                // Show the IME, except when selecting in read-only text.
8499                final InputMethodManager imm = InputMethodManager.peekInstance();
8500                viewClicked(imm);
8501                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
8502                    handled |= imm != null && imm.showSoftInput(this, 0);
8503                }
8504
8505                // The above condition ensures that the mEditor is not null
8506                mEditor.onTouchUpEvent(event);
8507
8508                handled = true;
8509            }
8510
8511            if (handled) {
8512                return true;
8513            }
8514        }
8515
8516        return superResult;
8517    }
8518
8519    @Override
8520    public boolean onGenericMotionEvent(MotionEvent event) {
8521        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8522            try {
8523                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
8524                    return true;
8525                }
8526            } catch (AbstractMethodError ex) {
8527                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
8528                // Ignore its absence in case third party applications implemented the
8529                // interface directly.
8530            }
8531        }
8532        return super.onGenericMotionEvent(event);
8533    }
8534
8535    @Override
8536    protected void onCreateContextMenu(ContextMenu menu) {
8537        if (mEditor != null) {
8538            mEditor.onCreateContextMenu(menu);
8539        }
8540    }
8541
8542    @Override
8543    public boolean showContextMenu() {
8544        if (mEditor != null) {
8545            mEditor.setContextMenuAnchor(Float.NaN, Float.NaN);
8546        }
8547        return super.showContextMenu();
8548    }
8549
8550    @Override
8551    public boolean showContextMenu(float x, float y) {
8552        if (mEditor != null) {
8553            mEditor.setContextMenuAnchor(x, y);
8554        }
8555        return super.showContextMenu(x, y);
8556    }
8557
8558    /**
8559     * @return True iff this TextView contains a text that can be edited, or if this is
8560     * a selectable TextView.
8561     */
8562    boolean isTextEditable() {
8563        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
8564    }
8565
8566    /**
8567     * Returns true, only while processing a touch gesture, if the initial
8568     * touch down event caused focus to move to the text view and as a result
8569     * its selection changed.  Only valid while processing the touch gesture
8570     * of interest, in an editable text view.
8571     */
8572    public boolean didTouchFocusSelect() {
8573        return mEditor != null && mEditor.mTouchFocusSelected;
8574    }
8575
8576    @Override
8577    public void cancelLongPress() {
8578        super.cancelLongPress();
8579        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
8580    }
8581
8582    @Override
8583    public boolean onTrackballEvent(MotionEvent event) {
8584        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8585            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
8586                return true;
8587            }
8588        }
8589
8590        return super.onTrackballEvent(event);
8591    }
8592
8593    public void setScroller(Scroller s) {
8594        mScroller = s;
8595    }
8596
8597    @Override
8598    protected float getLeftFadingEdgeStrength() {
8599        if (isMarqueeFadeEnabled() && mMarquee != null && !mMarquee.isStopped()) {
8600            final Marquee marquee = mMarquee;
8601            if (marquee.shouldDrawLeftFade()) {
8602                return getHorizontalFadingEdgeStrength(marquee.getScroll(), 0.0f);
8603            } else {
8604                return 0.0f;
8605            }
8606        } else if (getLineCount() == 1) {
8607            final float lineLeft = getLayout().getLineLeft(0);
8608            if(lineLeft > mScrollX) return 0.0f;
8609            return getHorizontalFadingEdgeStrength(mScrollX, lineLeft);
8610        }
8611        return super.getLeftFadingEdgeStrength();
8612    }
8613
8614    @Override
8615    protected float getRightFadingEdgeStrength() {
8616        if (isMarqueeFadeEnabled() && mMarquee != null && !mMarquee.isStopped()) {
8617            final Marquee marquee = mMarquee;
8618            return getHorizontalFadingEdgeStrength(marquee.getMaxFadeScroll(), marquee.getScroll());
8619        } else if (getLineCount() == 1) {
8620            final float rightEdge = mScrollX + (getWidth() - getCompoundPaddingLeft() -
8621                    getCompoundPaddingRight());
8622            final float lineRight = getLayout().getLineRight(0);
8623            if(lineRight < rightEdge) return 0.0f;
8624            return getHorizontalFadingEdgeStrength(rightEdge, lineRight);
8625        }
8626        return super.getRightFadingEdgeStrength();
8627    }
8628
8629    /**
8630     * Calculates the fading edge strength as the ratio of the distance between two
8631     * horizontal positions to {@link View#getHorizontalFadingEdgeLength()}. Uses the absolute
8632     * value for the distance calculation.
8633     *
8634     * @param position1 A horizontal position.
8635     * @param position2 A horizontal position.
8636     * @return Fading edge strength between [0.0f, 1.0f].
8637     */
8638    @FloatRange(from=0.0, to=1.0)
8639    private final float getHorizontalFadingEdgeStrength(float position1, float position2) {
8640        final int horizontalFadingEdgeLength = getHorizontalFadingEdgeLength();
8641        if(horizontalFadingEdgeLength == 0) return 0.0f;
8642        final float diff = Math.abs(position1 - position2);
8643        if(diff > horizontalFadingEdgeLength) return 1.0f;
8644        return diff / horizontalFadingEdgeLength;
8645    }
8646
8647    private final boolean isMarqueeFadeEnabled() {
8648        return mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8649                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
8650    }
8651
8652    @Override
8653    protected int computeHorizontalScrollRange() {
8654        if (mLayout != null) {
8655            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
8656                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
8657        }
8658
8659        return super.computeHorizontalScrollRange();
8660    }
8661
8662    @Override
8663    protected int computeVerticalScrollRange() {
8664        if (mLayout != null)
8665            return mLayout.getHeight();
8666
8667        return super.computeVerticalScrollRange();
8668    }
8669
8670    @Override
8671    protected int computeVerticalScrollExtent() {
8672        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
8673    }
8674
8675    @Override
8676    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
8677        super.findViewsWithText(outViews, searched, flags);
8678        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
8679                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
8680            String searchedLowerCase = searched.toString().toLowerCase();
8681            String textLowerCase = mText.toString().toLowerCase();
8682            if (textLowerCase.contains(searchedLowerCase)) {
8683                outViews.add(this);
8684            }
8685        }
8686    }
8687
8688    public enum BufferType {
8689        NORMAL, SPANNABLE, EDITABLE,
8690    }
8691
8692    /**
8693     * Returns the TextView_textColor attribute from the TypedArray, if set, or
8694     * the TextAppearance_textColor from the TextView_textAppearance attribute,
8695     * if TextView_textColor was not set directly.
8696     *
8697     * @removed
8698     */
8699    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
8700        if (attrs == null) {
8701            // Preserve behavior prior to removal of this API.
8702            throw new NullPointerException();
8703        }
8704
8705        // It's not safe to use this method from apps. The parameter 'attrs'
8706        // must have been obtained using the TextView filter array which is not
8707        // available to the SDK. As such, we grab a default TypedArray with the
8708        // right filter instead here.
8709        final TypedArray a = context.obtainStyledAttributes(R.styleable.TextView);
8710        ColorStateList colors = a.getColorStateList(R.styleable.TextView_textColor);
8711        if (colors == null) {
8712            final int ap = a.getResourceId(R.styleable.TextView_textAppearance, 0);
8713            if (ap != 0) {
8714                final TypedArray appearance = context.obtainStyledAttributes(
8715                        ap, R.styleable.TextAppearance);
8716                colors = appearance.getColorStateList(R.styleable.TextAppearance_textColor);
8717                appearance.recycle();
8718            }
8719        }
8720        a.recycle();
8721
8722        return colors;
8723    }
8724
8725    /**
8726     * Returns the default color from the TextView_textColor attribute from the
8727     * AttributeSet, if set, or the default color from the
8728     * TextAppearance_textColor from the TextView_textAppearance attribute, if
8729     * TextView_textColor was not set directly.
8730     *
8731     * @removed
8732     */
8733    public static int getTextColor(Context context, TypedArray attrs, int def) {
8734        final ColorStateList colors = getTextColors(context, attrs);
8735        if (colors == null) {
8736            return def;
8737        } else {
8738            return colors.getDefaultColor();
8739        }
8740    }
8741
8742    @Override
8743    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
8744        if (event.hasModifiers(KeyEvent.META_CTRL_ON)) {
8745            // Handle Ctrl-only shortcuts.
8746            switch (keyCode) {
8747            case KeyEvent.KEYCODE_A:
8748                if (canSelectText()) {
8749                    return onTextContextMenuItem(ID_SELECT_ALL);
8750                }
8751                break;
8752            case KeyEvent.KEYCODE_Z:
8753                if (canUndo()) {
8754                    return onTextContextMenuItem(ID_UNDO);
8755                }
8756                break;
8757            case KeyEvent.KEYCODE_X:
8758                if (canCut()) {
8759                    return onTextContextMenuItem(ID_CUT);
8760                }
8761                break;
8762            case KeyEvent.KEYCODE_C:
8763                if (canCopy()) {
8764                    return onTextContextMenuItem(ID_COPY);
8765                }
8766                break;
8767            case KeyEvent.KEYCODE_V:
8768                if (canPaste()) {
8769                    return onTextContextMenuItem(ID_PASTE);
8770                }
8771                break;
8772            }
8773        } else if (event.hasModifiers(KeyEvent.META_CTRL_ON | KeyEvent.META_SHIFT_ON)) {
8774            // Handle Ctrl-Shift shortcuts.
8775            switch (keyCode) {
8776                case KeyEvent.KEYCODE_Z:
8777                    if (canRedo()) {
8778                        return onTextContextMenuItem(ID_REDO);
8779                    }
8780                    break;
8781                case KeyEvent.KEYCODE_V:
8782                    if (canPaste()) {
8783                        return onTextContextMenuItem(ID_PASTE_AS_PLAIN_TEXT);
8784                    }
8785            }
8786        }
8787        return super.onKeyShortcut(keyCode, event);
8788    }
8789
8790    /**
8791     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
8792     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
8793     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
8794     * sufficient.
8795     */
8796    boolean canSelectText() {
8797        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
8798    }
8799
8800    /**
8801     * Test based on the <i>intrinsic</i> charateristics of the TextView.
8802     * The text must be spannable and the movement method must allow for arbitary selection.
8803     *
8804     * See also {@link #canSelectText()}.
8805     */
8806    boolean textCanBeSelected() {
8807        // prepareCursorController() relies on this method.
8808        // If you change this condition, make sure prepareCursorController is called anywhere
8809        // the value of this condition might be changed.
8810        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
8811        return isTextEditable() ||
8812                (isTextSelectable() && mText instanceof Spannable && isEnabled());
8813    }
8814
8815    private Locale getTextServicesLocale(boolean allowNullLocale) {
8816        // Start fetching the text services locale asynchronously.
8817        updateTextServicesLocaleAsync();
8818        // If !allowNullLocale and there is no cached text services locale, just return the default
8819        // locale.
8820        return (mCurrentSpellCheckerLocaleCache == null && !allowNullLocale) ? Locale.getDefault()
8821                : mCurrentSpellCheckerLocaleCache;
8822    }
8823
8824    /**
8825     * This is a temporary method. Future versions may support multi-locale text.
8826     * Caveat: This method may not return the latest text services locale, but this should be
8827     * acceptable and it's more important to make this method asynchronous.
8828     *
8829     * @return The locale that should be used for a word iterator
8830     * in this TextView, based on the current spell checker settings,
8831     * the current IME's locale, or the system default locale.
8832     * Please note that a word iterator in this TextView is different from another word iterator
8833     * used by SpellChecker.java of TextView. This method should be used for the former.
8834     * @hide
8835     */
8836    // TODO: Support multi-locale
8837    // TODO: Update the text services locale immediately after the keyboard locale is switched
8838    // by catching intent of keyboard switch event
8839    public Locale getTextServicesLocale() {
8840        return getTextServicesLocale(false /* allowNullLocale */);
8841    }
8842
8843    /**
8844     * @return true if this TextView is specialized for showing and interacting with the extracted
8845     * text in a full-screen input method.
8846     * @hide
8847     */
8848    public boolean isInExtractedMode() {
8849        return false;
8850    }
8851
8852    /**
8853     * This is a temporary method. Future versions may support multi-locale text.
8854     * Caveat: This method may not return the latest spell checker locale, but this should be
8855     * acceptable and it's more important to make this method asynchronous.
8856     *
8857     * @return The locale that should be used for a spell checker in this TextView,
8858     * based on the current spell checker settings, the current IME's locale, or the system default
8859     * locale.
8860     * @hide
8861     */
8862    public Locale getSpellCheckerLocale() {
8863        return getTextServicesLocale(true /* allowNullLocale */);
8864    }
8865
8866    private void updateTextServicesLocaleAsync() {
8867        // AsyncTask.execute() uses a serial executor which means we don't have
8868        // to lock around updateTextServicesLocaleLocked() to prevent it from
8869        // being executed n times in parallel.
8870        AsyncTask.execute(new Runnable() {
8871            @Override
8872            public void run() {
8873                updateTextServicesLocaleLocked();
8874            }
8875        });
8876    }
8877
8878    private void updateTextServicesLocaleLocked() {
8879        final TextServicesManager textServicesManager = (TextServicesManager)
8880                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
8881        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
8882        final Locale locale;
8883        if (subtype != null) {
8884            locale = subtype.getLocaleObject();
8885        } else {
8886            locale = null;
8887        }
8888        mCurrentSpellCheckerLocaleCache = locale;
8889    }
8890
8891    void onLocaleChanged() {
8892        mEditor.onLocaleChanged();
8893    }
8894
8895    /**
8896     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
8897     * Made available to achieve a consistent behavior.
8898     * @hide
8899     */
8900    public WordIterator getWordIterator() {
8901        if (mEditor != null) {
8902            return mEditor.getWordIterator();
8903        } else {
8904            return null;
8905        }
8906    }
8907
8908    /** @hide */
8909    @Override
8910    public void onPopulateAccessibilityEventInternal(AccessibilityEvent event) {
8911        super.onPopulateAccessibilityEventInternal(event);
8912
8913        final CharSequence text = getTextForAccessibility();
8914        if (!TextUtils.isEmpty(text)) {
8915            event.getText().add(text);
8916        }
8917    }
8918
8919    /**
8920     * @return true if the user has explicitly allowed accessibility services
8921     * to speak passwords.
8922     */
8923    private boolean shouldSpeakPasswordsForAccessibility() {
8924        return (Settings.Secure.getIntForUser(mContext.getContentResolver(),
8925                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0,
8926                UserHandle.USER_CURRENT_OR_SELF) == 1);
8927    }
8928
8929    @Override
8930    public CharSequence getAccessibilityClassName() {
8931        return TextView.class.getName();
8932    }
8933
8934    @Override
8935    public void onProvideStructure(ViewStructure structure) {
8936        super.onProvideStructure(structure);
8937        final boolean isPassword = hasPasswordTransformationMethod()
8938                || isPasswordInputType(getInputType());
8939        if (!isPassword) {
8940            if (mLayout == null) {
8941                assumeLayout();
8942            }
8943            Layout layout = mLayout;
8944            final int lineCount = layout.getLineCount();
8945            if (lineCount <= 1) {
8946                // Simple case: this is a single line.
8947                structure.setText(getText(), getSelectionStart(), getSelectionEnd());
8948            } else {
8949                // Complex case: multi-line, could be scrolled or within a scroll container
8950                // so some lines are not visible.
8951                final int[] tmpCords = new int[2];
8952                getLocationInWindow(tmpCords);
8953                final int topWindowLocation = tmpCords[1];
8954                View root = this;
8955                ViewParent viewParent = getParent();
8956                while (viewParent instanceof View) {
8957                    root = (View) viewParent;
8958                    viewParent = root.getParent();
8959                }
8960                final int windowHeight = root.getHeight();
8961                final int topLine;
8962                final int bottomLine;
8963                if (topWindowLocation >= 0) {
8964                    // The top of the view is fully within its window; start text at line 0.
8965                    topLine = getLineAtCoordinateUnclamped(0);
8966                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1);
8967                } else {
8968                    // The top of hte window has scrolled off the top of the window; figure out
8969                    // the starting line for this.
8970                    topLine = getLineAtCoordinateUnclamped(-topWindowLocation);
8971                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1-topWindowLocation);
8972                }
8973                // We want to return some contextual lines above/below the lines that are
8974                // actually visible.
8975                int expandedTopLine = topLine - (bottomLine-topLine)/2;
8976                if (expandedTopLine < 0) {
8977                    expandedTopLine = 0;
8978                }
8979                int expandedBottomLine = bottomLine + (bottomLine-topLine)/2;
8980                if (expandedBottomLine >= lineCount) {
8981                    expandedBottomLine = lineCount-1;
8982                }
8983                // Convert lines into character offsets.
8984                int expandedTopChar = layout.getLineStart(expandedTopLine);
8985                int expandedBottomChar = layout.getLineEnd(expandedBottomLine);
8986                // Take into account selection -- if there is a selection, we need to expand
8987                // the text we are returning to include that selection.
8988                final int selStart = getSelectionStart();
8989                final int selEnd = getSelectionEnd();
8990                if (selStart < selEnd) {
8991                    if (selStart < expandedTopChar) {
8992                        expandedTopChar = selStart;
8993                    }
8994                    if (selEnd > expandedBottomChar) {
8995                        expandedBottomChar = selEnd;
8996                    }
8997                }
8998                // Get the text and trim it to the range we are reporting.
8999                CharSequence text = getText();
9000                if (expandedTopChar > 0 || expandedBottomChar < text.length()) {
9001                    text = text.subSequence(expandedTopChar, expandedBottomChar);
9002                }
9003                structure.setText(text, selStart-expandedTopChar, selEnd-expandedTopChar);
9004                final int[] lineOffsets = new int[bottomLine-topLine+1];
9005                final int[] lineBaselines = new int[bottomLine-topLine+1];
9006                final int baselineOffset = getBaselineOffset();
9007                for (int i=topLine; i<=bottomLine; i++) {
9008                    lineOffsets[i-topLine] = layout.getLineStart(i);
9009                    lineBaselines[i-topLine] = layout.getLineBaseline(i) + baselineOffset;
9010                }
9011                structure.setTextLines(lineOffsets, lineBaselines);
9012            }
9013
9014            // Extract style information that applies to the TextView as a whole.
9015            int style = 0;
9016            int typefaceStyle = getTypefaceStyle();
9017            if ((typefaceStyle & Typeface.BOLD) != 0) {
9018                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9019            }
9020            if ((typefaceStyle & Typeface.ITALIC) != 0) {
9021                style |= AssistStructure.ViewNode.TEXT_STYLE_ITALIC;
9022            }
9023
9024            // Global styles can also be set via TextView.setPaintFlags().
9025            int paintFlags = mTextPaint.getFlags();
9026            if ((paintFlags & Paint.FAKE_BOLD_TEXT_FLAG) != 0) {
9027                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9028            }
9029            if ((paintFlags & Paint.UNDERLINE_TEXT_FLAG) != 0) {
9030                style |= AssistStructure.ViewNode.TEXT_STYLE_UNDERLINE;
9031            }
9032            if ((paintFlags & Paint.STRIKE_THRU_TEXT_FLAG) != 0) {
9033                style |= AssistStructure.ViewNode.TEXT_STYLE_STRIKE_THRU;
9034            }
9035
9036            // TextView does not have its own text background color. A background is either part
9037            // of the View (and can be any drawable) or a BackgroundColorSpan inside the text.
9038            structure.setTextStyle(getTextSize(), getCurrentTextColor(),
9039                    AssistStructure.ViewNode.TEXT_COLOR_UNDEFINED /* bgColor */, style);
9040        }
9041        structure.setHint(getHint());
9042    }
9043
9044    /** @hide */
9045    @Override
9046    public void onInitializeAccessibilityEventInternal(AccessibilityEvent event) {
9047        super.onInitializeAccessibilityEventInternal(event);
9048
9049        final boolean isPassword = hasPasswordTransformationMethod();
9050        event.setPassword(isPassword);
9051
9052        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
9053            event.setFromIndex(Selection.getSelectionStart(mText));
9054            event.setToIndex(Selection.getSelectionEnd(mText));
9055            event.setItemCount(mText.length());
9056        }
9057    }
9058
9059    /** @hide */
9060    @Override
9061    public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
9062        super.onInitializeAccessibilityNodeInfoInternal(info);
9063
9064        final boolean isPassword = hasPasswordTransformationMethod();
9065        info.setPassword(isPassword);
9066        info.setText(getTextForAccessibility());
9067
9068        if (mBufferType == BufferType.EDITABLE) {
9069            info.setEditable(true);
9070            if (isEnabled()) {
9071                info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_SET_TEXT);
9072            }
9073        }
9074
9075        if (mEditor != null) {
9076            info.setInputType(mEditor.mInputType);
9077
9078            if (mEditor.mError != null) {
9079                info.setContentInvalid(true);
9080                info.setError(mEditor.mError);
9081            }
9082        }
9083
9084        if (!TextUtils.isEmpty(mText)) {
9085            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
9086            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
9087            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
9088                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
9089                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
9090                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
9091                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
9092            info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
9093        }
9094
9095        if (isFocused()) {
9096            if (canCopy()) {
9097                info.addAction(AccessibilityNodeInfo.ACTION_COPY);
9098            }
9099            if (canPaste()) {
9100                info.addAction(AccessibilityNodeInfo.ACTION_PASTE);
9101            }
9102            if (canCut()) {
9103                info.addAction(AccessibilityNodeInfo.ACTION_CUT);
9104            }
9105            if (canShare()) {
9106                info.addAction(new AccessibilityNodeInfo.AccessibilityAction(
9107                        ACCESSIBILITY_ACTION_SHARE,
9108                        getResources().getString(com.android.internal.R.string.share)));
9109            }
9110            if (canProcessText()) {  // also implies mEditor is not null.
9111                mEditor.mProcessTextIntentActionsHandler.onInitializeAccessibilityNodeInfo(info);
9112            }
9113        }
9114
9115        // Check for known input filter types.
9116        final int numFilters = mFilters.length;
9117        for (int i = 0; i < numFilters; i++) {
9118            final InputFilter filter = mFilters[i];
9119            if (filter instanceof InputFilter.LengthFilter) {
9120                info.setMaxTextLength(((InputFilter.LengthFilter) filter).getMax());
9121            }
9122        }
9123
9124        if (!isSingleLine()) {
9125            info.setMultiLine(true);
9126        }
9127    }
9128
9129    /**
9130     * Performs an accessibility action after it has been offered to the
9131     * delegate.
9132     *
9133     * @hide
9134     */
9135    @Override
9136    public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
9137        if (mEditor != null
9138                && mEditor.mProcessTextIntentActionsHandler.performAccessibilityAction(action)) {
9139            return true;
9140        }
9141        switch (action) {
9142            case AccessibilityNodeInfo.ACTION_CLICK: {
9143                return performAccessibilityActionClick(arguments);
9144            }
9145            case AccessibilityNodeInfo.ACTION_COPY: {
9146                if (isFocused() && canCopy()) {
9147                    if (onTextContextMenuItem(ID_COPY)) {
9148                        return true;
9149                    }
9150                }
9151            } return false;
9152            case AccessibilityNodeInfo.ACTION_PASTE: {
9153                if (isFocused() && canPaste()) {
9154                    if (onTextContextMenuItem(ID_PASTE)) {
9155                        return true;
9156                    }
9157                }
9158            } return false;
9159            case AccessibilityNodeInfo.ACTION_CUT: {
9160                if (isFocused() && canCut()) {
9161                    if (onTextContextMenuItem(ID_CUT)) {
9162                        return true;
9163                    }
9164                }
9165            } return false;
9166            case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
9167                ensureIterableTextForAccessibilitySelectable();
9168                CharSequence text = getIterableTextForAccessibility();
9169                if (text == null) {
9170                    return false;
9171                }
9172                final int start = (arguments != null) ? arguments.getInt(
9173                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
9174                final int end = (arguments != null) ? arguments.getInt(
9175                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
9176                if ((getSelectionStart() != start || getSelectionEnd() != end)) {
9177                    // No arguments clears the selection.
9178                    if (start == end && end == -1) {
9179                        Selection.removeSelection((Spannable) text);
9180                        return true;
9181                    }
9182                    if (start >= 0 && start <= end && end <= text.length()) {
9183                        Selection.setSelection((Spannable) text, start, end);
9184                        // Make sure selection mode is engaged.
9185                        if (mEditor != null) {
9186                            mEditor.startSelectionActionMode();
9187                        }
9188                        return true;
9189                    }
9190                }
9191            } return false;
9192            case AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY:
9193            case AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY: {
9194                ensureIterableTextForAccessibilitySelectable();
9195                return super.performAccessibilityActionInternal(action, arguments);
9196            }
9197            case ACCESSIBILITY_ACTION_SHARE: {
9198                if (isFocused() && canShare()) {
9199                    if (onTextContextMenuItem(ID_SHARE)) {
9200                        return true;
9201                    }
9202                }
9203            } return false;
9204            case AccessibilityNodeInfo.ACTION_SET_TEXT: {
9205                if (!isEnabled() || (mBufferType != BufferType.EDITABLE)) {
9206                    return false;
9207                }
9208                CharSequence text = (arguments != null) ? arguments.getCharSequence(
9209                        AccessibilityNodeInfo.ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE) : null;
9210                setText(text);
9211                if (mText != null) {
9212                    int updatedTextLength = mText.length();
9213                    if (updatedTextLength > 0) {
9214                        Selection.setSelection((Spannable) mText, updatedTextLength);
9215                    }
9216                }
9217            } return true;
9218            default: {
9219                return super.performAccessibilityActionInternal(action, arguments);
9220            }
9221        }
9222    }
9223
9224    private boolean performAccessibilityActionClick(Bundle arguments) {
9225        boolean handled = false;
9226
9227        if (!isEnabled()) {
9228            return false;
9229        }
9230
9231        if (isClickable() || isLongClickable()) {
9232            // Simulate View.onTouchEvent for an ACTION_UP event
9233            if (isFocusable() && !isFocused()) {
9234                requestFocus();
9235            }
9236
9237            performClick();
9238            handled = true;
9239        }
9240
9241        // Show the IME, except when selecting in read-only text.
9242        if ((mMovement != null || onCheckIsTextEditor()) && hasSpannableText() && mLayout != null
9243                && (isTextEditable() || isTextSelectable()) && isFocused()) {
9244            final InputMethodManager imm = InputMethodManager.peekInstance();
9245            viewClicked(imm);
9246            if (!isTextSelectable() && mEditor.mShowSoftInputOnFocus && imm != null) {
9247                handled |= imm.showSoftInput(this, 0);
9248            }
9249        }
9250
9251        return handled;
9252    }
9253
9254    private boolean hasSpannableText() {
9255        return mText != null && mText instanceof Spannable;
9256    }
9257
9258    /** @hide */
9259    @Override
9260    public void sendAccessibilityEventInternal(int eventType) {
9261        if (eventType == AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED && mEditor != null) {
9262            mEditor.mProcessTextIntentActionsHandler.initializeAccessibilityActions();
9263        }
9264
9265        // Do not send scroll events since first they are not interesting for
9266        // accessibility and second such events a generated too frequently.
9267        // For details see the implementation of bringTextIntoView().
9268        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
9269            return;
9270        }
9271        super.sendAccessibilityEventInternal(eventType);
9272    }
9273
9274    /**
9275     * Returns the text that should be exposed to accessibility services.
9276     * <p>
9277     * This approximates what is displayed visually. If the user has specified
9278     * that accessibility services should speak passwords, this method will
9279     * bypass any password transformation method and return unobscured text.
9280     *
9281     * @return the text that should be exposed to accessibility services, may
9282     *         be {@code null} if no text is set
9283     */
9284    @Nullable
9285    private CharSequence getTextForAccessibility() {
9286        // If the text is empty, we must be showing the hint text.
9287        if (TextUtils.isEmpty(mText)) {
9288            return mHint;
9289        }
9290
9291        // Check whether we need to bypass the transformation
9292        // method and expose unobscured text.
9293        if (hasPasswordTransformationMethod() && shouldSpeakPasswordsForAccessibility()) {
9294            return mText;
9295        }
9296
9297        // Otherwise, speak whatever text is being displayed.
9298        return mTransformed;
9299    }
9300
9301    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
9302            int fromIndex, int removedCount, int addedCount) {
9303        AccessibilityEvent event =
9304                AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
9305        event.setFromIndex(fromIndex);
9306        event.setRemovedCount(removedCount);
9307        event.setAddedCount(addedCount);
9308        event.setBeforeText(beforeText);
9309        sendAccessibilityEventUnchecked(event);
9310    }
9311
9312    /**
9313     * Returns whether this text view is a current input method target.  The
9314     * default implementation just checks with {@link InputMethodManager}.
9315     */
9316    public boolean isInputMethodTarget() {
9317        InputMethodManager imm = InputMethodManager.peekInstance();
9318        return imm != null && imm.isActive(this);
9319    }
9320
9321    static final int ID_SELECT_ALL = android.R.id.selectAll;
9322    static final int ID_UNDO = android.R.id.undo;
9323    static final int ID_REDO = android.R.id.redo;
9324    static final int ID_CUT = android.R.id.cut;
9325    static final int ID_COPY = android.R.id.copy;
9326    static final int ID_PASTE = android.R.id.paste;
9327    static final int ID_SHARE = android.R.id.shareText;
9328    static final int ID_PASTE_AS_PLAIN_TEXT = android.R.id.pasteAsPlainText;
9329    static final int ID_REPLACE = android.R.id.replaceText;
9330
9331    /**
9332     * Called when a context menu option for the text view is selected.  Currently
9333     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
9334     * {@link android.R.id#copy}, {@link android.R.id#paste} or {@link android.R.id#shareText}.
9335     *
9336     * @return true if the context menu item action was performed.
9337     */
9338    public boolean onTextContextMenuItem(int id) {
9339        int min = 0;
9340        int max = mText.length();
9341
9342        if (isFocused()) {
9343            final int selStart = getSelectionStart();
9344            final int selEnd = getSelectionEnd();
9345
9346            min = Math.max(0, Math.min(selStart, selEnd));
9347            max = Math.max(0, Math.max(selStart, selEnd));
9348        }
9349
9350        switch (id) {
9351            case ID_SELECT_ALL:
9352                selectAllText();
9353                return true;
9354
9355            case ID_UNDO:
9356                if (mEditor != null) {
9357                    mEditor.undo();
9358                }
9359                return true;  // Returns true even if nothing was undone.
9360
9361            case ID_REDO:
9362                if (mEditor != null) {
9363                    mEditor.redo();
9364                }
9365                return true;  // Returns true even if nothing was undone.
9366
9367            case ID_PASTE:
9368                paste(min, max, true /* withFormatting */);
9369                return true;
9370
9371            case ID_PASTE_AS_PLAIN_TEXT:
9372                paste(min, max, false /* withFormatting */);
9373                return true;
9374
9375            case ID_CUT:
9376                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9377                deleteText_internal(min, max);
9378                return true;
9379
9380            case ID_COPY:
9381                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9382                stopTextActionMode();
9383                return true;
9384
9385            case ID_REPLACE:
9386                if (mEditor != null) {
9387                    mEditor.replace();
9388                }
9389                return true;
9390
9391            case ID_SHARE:
9392                shareSelectedText();
9393                return true;
9394        }
9395        return false;
9396    }
9397
9398    CharSequence getTransformedText(int start, int end) {
9399        return removeSuggestionSpans(mTransformed.subSequence(start, end));
9400    }
9401
9402    @Override
9403    public boolean performLongClick() {
9404        boolean handled = false;
9405
9406        if (mEditor != null) {
9407            mEditor.mIsBeingLongClicked = true;
9408        }
9409
9410        if (super.performLongClick()) {
9411            handled = true;
9412        }
9413
9414        if (mEditor != null) {
9415            handled |= mEditor.performLongClick(handled);
9416            mEditor.mIsBeingLongClicked = false;
9417        }
9418
9419        if (handled) {
9420            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
9421            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
9422        }
9423
9424        return handled;
9425    }
9426
9427    @Override
9428    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
9429        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
9430        if (mEditor != null) {
9431            mEditor.onScrollChanged();
9432        }
9433    }
9434
9435    /**
9436     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
9437     * by the IME or by the spell checker as the user types. This is done by adding
9438     * {@link SuggestionSpan}s to the text.
9439     *
9440     * When suggestions are enabled (default), this list of suggestions will be displayed when the
9441     * user asks for them on these parts of the text. This value depends on the inputType of this
9442     * TextView.
9443     *
9444     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
9445     *
9446     * In addition, the type variation must be one of
9447     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
9448     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
9449     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
9450     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
9451     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
9452     *
9453     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
9454     *
9455     * @return true if the suggestions popup window is enabled, based on the inputType.
9456     */
9457    public boolean isSuggestionsEnabled() {
9458        if (mEditor == null) return false;
9459        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
9460            return false;
9461        }
9462        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
9463
9464        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
9465        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
9466                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
9467                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
9468                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
9469                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
9470    }
9471
9472    /**
9473     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9474     * selection is initiated in this View.
9475     *
9476     * <p>The standard implementation populates the menu with a subset of Select All, Cut, Copy,
9477     * Paste, Replace and Share actions, depending on what this View supports.
9478     *
9479     * <p>A custom implementation can add new entries in the default menu in its
9480     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, android.view.Menu)}
9481     * method. The default actions can also be removed from the menu using
9482     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9483     * {@link android.R.id#cut}, {@link android.R.id#copy}, {@link android.R.id#paste},
9484     * {@link android.R.id#replaceText} or {@link android.R.id#shareText} ids as parameters.
9485     *
9486     * <p>Returning false from
9487     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, android.view.Menu)}
9488     * will prevent the action mode from being started.
9489     *
9490     * <p>Action click events should be handled by the custom implementation of
9491     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode,
9492     * android.view.MenuItem)}.
9493     *
9494     * <p>Note that text selection mode is not started when a TextView receives focus and the
9495     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
9496     * that case, to allow for quick replacement.
9497     */
9498    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
9499        createEditorIfNeeded();
9500        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
9501    }
9502
9503    /**
9504     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
9505     *
9506     * @return The current custom selection callback.
9507     */
9508    public ActionMode.Callback getCustomSelectionActionModeCallback() {
9509        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
9510    }
9511
9512    /**
9513     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9514     * insertion is initiated in this View.
9515     * The standard implementation populates the menu with a subset of Select All,
9516     * Paste and Replace actions, depending on what this View supports.
9517     *
9518     * <p>A custom implementation can add new entries in the default menu in its
9519     * {@link android.view.ActionMode.Callback#onPrepareActionMode(android.view.ActionMode,
9520     * android.view.Menu)} method. The default actions can also be removed from the menu using
9521     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9522     * {@link android.R.id#paste} or {@link android.R.id#replaceText} ids as parameters.</p>
9523     *
9524     * <p>Returning false from
9525     * {@link android.view.ActionMode.Callback#onCreateActionMode(android.view.ActionMode,
9526     * android.view.Menu)} will prevent the action mode from being started.</p>
9527     *
9528     * <p>Action click events should be handled by the custom implementation of
9529     * {@link android.view.ActionMode.Callback#onActionItemClicked(android.view.ActionMode,
9530     * android.view.MenuItem)}.</p>
9531     *
9532     * <p>Note that text insertion mode is not started when a TextView receives focus and the
9533     * {@link android.R.attr#selectAllOnFocus} flag has been set.</p>
9534     */
9535    public void setCustomInsertionActionModeCallback(ActionMode.Callback actionModeCallback) {
9536        createEditorIfNeeded();
9537        mEditor.mCustomInsertionActionModeCallback = actionModeCallback;
9538    }
9539
9540    /**
9541     * Retrieves the value set in {@link #setCustomInsertionActionModeCallback}. Default is null.
9542     *
9543     * @return The current custom insertion callback.
9544     */
9545    public ActionMode.Callback getCustomInsertionActionModeCallback() {
9546        return mEditor == null ? null : mEditor.mCustomInsertionActionModeCallback;
9547    }
9548
9549    /**
9550     * @hide
9551     */
9552    protected void stopTextActionMode() {
9553        if (mEditor != null) {
9554            mEditor.stopTextActionMode();
9555        }
9556    }
9557
9558    boolean canUndo() {
9559        return mEditor != null && mEditor.canUndo();
9560    }
9561
9562    boolean canRedo() {
9563        return mEditor != null && mEditor.canRedo();
9564    }
9565
9566    boolean canCut() {
9567        if (hasPasswordTransformationMethod()) {
9568            return false;
9569        }
9570
9571        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
9572                mEditor.mKeyListener != null) {
9573            return true;
9574        }
9575
9576        return false;
9577    }
9578
9579    boolean canCopy() {
9580        if (hasPasswordTransformationMethod()) {
9581            return false;
9582        }
9583
9584        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9585            return true;
9586        }
9587
9588        return false;
9589    }
9590
9591    boolean canShare() {
9592        if (!getContext().canStartActivityForResult() || !isDeviceProvisioned()) {
9593            return false;
9594        }
9595        return canCopy();
9596    }
9597
9598    boolean isDeviceProvisioned() {
9599        if (mDeviceProvisionedState == DEVICE_PROVISIONED_UNKNOWN) {
9600            mDeviceProvisionedState = Settings.Global.getInt(
9601                    mContext.getContentResolver(), Settings.Global.DEVICE_PROVISIONED, 0) != 0
9602                    ? DEVICE_PROVISIONED_YES
9603                    : DEVICE_PROVISIONED_NO;
9604        }
9605        return mDeviceProvisionedState == DEVICE_PROVISIONED_YES;
9606    }
9607
9608    boolean canPaste() {
9609        return (mText instanceof Editable &&
9610                mEditor != null && mEditor.mKeyListener != null &&
9611                getSelectionStart() >= 0 &&
9612                getSelectionEnd() >= 0 &&
9613                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
9614                hasPrimaryClip());
9615    }
9616
9617    boolean canProcessText() {
9618        if (getId() == View.NO_ID) {
9619            return false;
9620        }
9621        return canShare();
9622    }
9623
9624    boolean canSelectAllText() {
9625        return canSelectText() && !hasPasswordTransformationMethod()
9626                && !(getSelectionStart() == 0 && getSelectionEnd() == mText.length());
9627    }
9628
9629    boolean selectAllText() {
9630        final int length = mText.length();
9631        Selection.setSelection((Spannable) mText, 0, length);
9632        return length > 0;
9633    }
9634
9635    void replaceSelectionWithText(CharSequence text) {
9636        ((Editable) mText).replace(getSelectionStart(), getSelectionEnd(), text);
9637    }
9638
9639    /**
9640     * Paste clipboard content between min and max positions.
9641     */
9642    private void paste(int min, int max, boolean withFormatting) {
9643        ClipboardManager clipboard =
9644            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
9645        ClipData clip = clipboard.getPrimaryClip();
9646        if (clip != null) {
9647            boolean didFirst = false;
9648            for (int i=0; i<clip.getItemCount(); i++) {
9649                final CharSequence paste;
9650                if (withFormatting) {
9651                    paste = clip.getItemAt(i).coerceToStyledText(getContext());
9652                } else {
9653                    // Get an item as text and remove all spans by toString().
9654                    final CharSequence text = clip.getItemAt(i).coerceToText(getContext());
9655                    paste = (text instanceof Spanned) ? text.toString() : text;
9656                }
9657                if (paste != null) {
9658                    if (!didFirst) {
9659                        Selection.setSelection((Spannable) mText, max);
9660                        ((Editable) mText).replace(min, max, paste);
9661                        didFirst = true;
9662                    } else {
9663                        ((Editable) mText).insert(getSelectionEnd(), "\n");
9664                        ((Editable) mText).insert(getSelectionEnd(), paste);
9665                    }
9666                }
9667            }
9668            sLastCutCopyOrTextChangedTime = 0;
9669        }
9670    }
9671
9672    private void shareSelectedText() {
9673        String selectedText = getSelectedText();
9674        if (selectedText != null && !selectedText.isEmpty()) {
9675            Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
9676            sharingIntent.setType("text/plain");
9677            sharingIntent.removeExtra(android.content.Intent.EXTRA_TEXT);
9678            sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, selectedText);
9679            getContext().startActivity(Intent.createChooser(sharingIntent, null));
9680            Selection.setSelection((Spannable) mText, getSelectionEnd());
9681        }
9682    }
9683
9684    private void setPrimaryClip(ClipData clip) {
9685        ClipboardManager clipboard = (ClipboardManager) getContext().
9686                getSystemService(Context.CLIPBOARD_SERVICE);
9687        clipboard.setPrimaryClip(clip);
9688        sLastCutCopyOrTextChangedTime = SystemClock.uptimeMillis();
9689    }
9690
9691    /**
9692     * Get the character offset closest to the specified absolute position. A typical use case is to
9693     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
9694     *
9695     * @param x The horizontal absolute position of a point on screen
9696     * @param y The vertical absolute position of a point on screen
9697     * @return the character offset for the character whose position is closest to the specified
9698     *  position. Returns -1 if there is no layout.
9699     */
9700    public int getOffsetForPosition(float x, float y) {
9701        if (getLayout() == null) return -1;
9702        final int line = getLineAtCoordinate(y);
9703        final int offset = getOffsetAtCoordinate(line, x);
9704        return offset;
9705    }
9706
9707    float convertToLocalHorizontalCoordinate(float x) {
9708        x -= getTotalPaddingLeft();
9709        // Clamp the position to inside of the view.
9710        x = Math.max(0.0f, x);
9711        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
9712        x += getScrollX();
9713        return x;
9714    }
9715
9716    int getLineAtCoordinate(float y) {
9717        y -= getTotalPaddingTop();
9718        // Clamp the position to inside of the view.
9719        y = Math.max(0.0f, y);
9720        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
9721        y += getScrollY();
9722        return getLayout().getLineForVertical((int) y);
9723    }
9724
9725    int getLineAtCoordinateUnclamped(float y) {
9726        y -= getTotalPaddingTop();
9727        y += getScrollY();
9728        return getLayout().getLineForVertical((int) y);
9729    }
9730
9731    int getOffsetAtCoordinate(int line, float x) {
9732        x = convertToLocalHorizontalCoordinate(x);
9733        return getLayout().getOffsetForHorizontal(line, x);
9734    }
9735
9736    @Override
9737    public boolean onDragEvent(DragEvent event) {
9738        switch (event.getAction()) {
9739            case DragEvent.ACTION_DRAG_STARTED:
9740                return mEditor != null && mEditor.hasInsertionController();
9741
9742            case DragEvent.ACTION_DRAG_ENTERED:
9743                TextView.this.requestFocus();
9744                return true;
9745
9746            case DragEvent.ACTION_DRAG_LOCATION:
9747                final int offset = getOffsetForPosition(event.getX(), event.getY());
9748                Selection.setSelection((Spannable)mText, offset);
9749                return true;
9750
9751            case DragEvent.ACTION_DROP:
9752                if (mEditor != null) mEditor.onDrop(event);
9753                return true;
9754
9755            case DragEvent.ACTION_DRAG_ENDED:
9756            case DragEvent.ACTION_DRAG_EXITED:
9757            default:
9758                return true;
9759        }
9760    }
9761
9762    boolean isInBatchEditMode() {
9763        if (mEditor == null) return false;
9764        final Editor.InputMethodState ims = mEditor.mInputMethodState;
9765        if (ims != null) {
9766            return ims.mBatchEditNesting > 0;
9767        }
9768        return mEditor.mInBatchEditControllers;
9769    }
9770
9771    @Override
9772    public void onRtlPropertiesChanged(int layoutDirection) {
9773        super.onRtlPropertiesChanged(layoutDirection);
9774
9775        final TextDirectionHeuristic newTextDir = getTextDirectionHeuristic();
9776        if (mTextDir != newTextDir) {
9777            mTextDir = newTextDir;
9778            if (mLayout != null) {
9779                checkForRelayout();
9780            }
9781        }
9782    }
9783
9784    /**
9785     * @hide
9786     */
9787    protected TextDirectionHeuristic getTextDirectionHeuristic() {
9788        if (hasPasswordTransformationMethod()) {
9789            // passwords fields should be LTR
9790            return TextDirectionHeuristics.LTR;
9791        }
9792
9793        // Always need to resolve layout direction first
9794        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
9795
9796        // Now, we can select the heuristic
9797        switch (getTextDirection()) {
9798            default:
9799            case TEXT_DIRECTION_FIRST_STRONG:
9800                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
9801                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
9802            case TEXT_DIRECTION_ANY_RTL:
9803                return TextDirectionHeuristics.ANYRTL_LTR;
9804            case TEXT_DIRECTION_LTR:
9805                return TextDirectionHeuristics.LTR;
9806            case TEXT_DIRECTION_RTL:
9807                return TextDirectionHeuristics.RTL;
9808            case TEXT_DIRECTION_LOCALE:
9809                return TextDirectionHeuristics.LOCALE;
9810            case TEXT_DIRECTION_FIRST_STRONG_LTR:
9811                return TextDirectionHeuristics.FIRSTSTRONG_LTR;
9812            case TEXT_DIRECTION_FIRST_STRONG_RTL:
9813                return TextDirectionHeuristics.FIRSTSTRONG_RTL;
9814        }
9815    }
9816
9817    /**
9818     * @hide
9819     */
9820    @Override
9821    public void onResolveDrawables(int layoutDirection) {
9822        // No need to resolve twice
9823        if (mLastLayoutDirection == layoutDirection) {
9824            return;
9825        }
9826        mLastLayoutDirection = layoutDirection;
9827
9828        // Resolve drawables
9829        if (mDrawables != null) {
9830            if (mDrawables.resolveWithLayoutDirection(layoutDirection)) {
9831                prepareDrawableForDisplay(mDrawables.mShowing[Drawables.LEFT]);
9832                prepareDrawableForDisplay(mDrawables.mShowing[Drawables.RIGHT]);
9833                applyCompoundDrawableTint();
9834            }
9835        }
9836    }
9837
9838    /**
9839     * Prepares a drawable for display by propagating layout direction and
9840     * drawable state.
9841     *
9842     * @param dr the drawable to prepare
9843     */
9844    private void prepareDrawableForDisplay(@Nullable Drawable dr) {
9845        if (dr == null) {
9846            return;
9847        }
9848
9849        dr.setLayoutDirection(getLayoutDirection());
9850
9851        if (dr.isStateful()) {
9852            dr.setState(getDrawableState());
9853            dr.jumpToCurrentState();
9854        }
9855    }
9856
9857    /**
9858     * @hide
9859     */
9860    protected void resetResolvedDrawables() {
9861        super.resetResolvedDrawables();
9862        mLastLayoutDirection = -1;
9863    }
9864
9865    /**
9866     * @hide
9867     */
9868    protected void viewClicked(InputMethodManager imm) {
9869        if (imm != null) {
9870            imm.viewClicked(this);
9871        }
9872    }
9873
9874    /**
9875     * Deletes the range of text [start, end[.
9876     * @hide
9877     */
9878    protected void deleteText_internal(int start, int end) {
9879        ((Editable) mText).delete(start, end);
9880    }
9881
9882    /**
9883     * Replaces the range of text [start, end[ by replacement text
9884     * @hide
9885     */
9886    protected void replaceText_internal(int start, int end, CharSequence text) {
9887        ((Editable) mText).replace(start, end, text);
9888    }
9889
9890    /**
9891     * Sets a span on the specified range of text
9892     * @hide
9893     */
9894    protected void setSpan_internal(Object span, int start, int end, int flags) {
9895        ((Editable) mText).setSpan(span, start, end, flags);
9896    }
9897
9898    /**
9899     * Moves the cursor to the specified offset position in text
9900     * @hide
9901     */
9902    protected void setCursorPosition_internal(int start, int end) {
9903        Selection.setSelection(((Editable) mText), start, end);
9904    }
9905
9906    /**
9907     * An Editor should be created as soon as any of the editable-specific fields (grouped
9908     * inside the Editor object) is assigned to a non-default value.
9909     * This method will create the Editor if needed.
9910     *
9911     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
9912     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
9913     * Editor for backward compatibility, as soon as one of these fields is assigned.
9914     *
9915     * Also note that for performance reasons, the mEditor is created when needed, but not
9916     * reset when no more edit-specific fields are needed.
9917     */
9918    private void createEditorIfNeeded() {
9919        if (mEditor == null) {
9920            mEditor = new Editor(this);
9921        }
9922    }
9923
9924    /**
9925     * @hide
9926     */
9927    @Override
9928    public CharSequence getIterableTextForAccessibility() {
9929        return mText;
9930    }
9931
9932    private void ensureIterableTextForAccessibilitySelectable() {
9933        if (!(mText instanceof Spannable)) {
9934            setText(mText, BufferType.SPANNABLE);
9935        }
9936    }
9937
9938    /**
9939     * @hide
9940     */
9941    @Override
9942    public TextSegmentIterator getIteratorForGranularity(int granularity) {
9943        switch (granularity) {
9944            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
9945                Spannable text = (Spannable) getIterableTextForAccessibility();
9946                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9947                    AccessibilityIterators.LineTextSegmentIterator iterator =
9948                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
9949                    iterator.initialize(text, getLayout());
9950                    return iterator;
9951                }
9952            } break;
9953            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
9954                Spannable text = (Spannable) getIterableTextForAccessibility();
9955                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9956                    AccessibilityIterators.PageTextSegmentIterator iterator =
9957                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
9958                    iterator.initialize(this);
9959                    return iterator;
9960                }
9961            } break;
9962        }
9963        return super.getIteratorForGranularity(granularity);
9964    }
9965
9966    /**
9967     * @hide
9968     */
9969    @Override
9970    public int getAccessibilitySelectionStart() {
9971        return getSelectionStart();
9972    }
9973
9974    /**
9975     * @hide
9976     */
9977    public boolean isAccessibilitySelectionExtendable() {
9978        return true;
9979    }
9980
9981    /**
9982     * @hide
9983     */
9984    @Override
9985    public int getAccessibilitySelectionEnd() {
9986        return getSelectionEnd();
9987    }
9988
9989    /**
9990     * @hide
9991     */
9992    @Override
9993    public void setAccessibilitySelection(int start, int end) {
9994        if (getAccessibilitySelectionStart() == start
9995                && getAccessibilitySelectionEnd() == end) {
9996            return;
9997        }
9998        CharSequence text = getIterableTextForAccessibility();
9999        if (Math.min(start, end) >= 0 && Math.max(start, end) <= text.length()) {
10000            Selection.setSelection((Spannable) text, start, end);
10001        } else {
10002            Selection.removeSelection((Spannable) text);
10003        }
10004        // Hide all selection controllers used for adjusting selection
10005        // since we are doing so explicitlty by other means and these
10006        // controllers interact with how selection behaves.
10007        if (mEditor != null) {
10008            mEditor.hideCursorAndSpanControllers();
10009            mEditor.stopTextActionMode();
10010        }
10011    }
10012
10013    /** @hide */
10014    @Override
10015    protected void encodeProperties(@NonNull ViewHierarchyEncoder stream) {
10016        super.encodeProperties(stream);
10017
10018        TruncateAt ellipsize = getEllipsize();
10019        stream.addProperty("text:ellipsize", ellipsize == null ? null : ellipsize.name());
10020        stream.addProperty("text:textSize", getTextSize());
10021        stream.addProperty("text:scaledTextSize", getScaledTextSize());
10022        stream.addProperty("text:typefaceStyle", getTypefaceStyle());
10023        stream.addProperty("text:selectionStart", getSelectionStart());
10024        stream.addProperty("text:selectionEnd", getSelectionEnd());
10025        stream.addProperty("text:curTextColor", mCurTextColor);
10026        stream.addProperty("text:text", mText == null ? null : mText.toString());
10027        stream.addProperty("text:gravity", mGravity);
10028    }
10029
10030    /**
10031     * User interface state that is stored by TextView for implementing
10032     * {@link View#onSaveInstanceState}.
10033     */
10034    public static class SavedState extends BaseSavedState {
10035        int selStart = -1;
10036        int selEnd = -1;
10037        CharSequence text;
10038        boolean frozenWithFocus;
10039        CharSequence error;
10040        ParcelableParcel editorState;  // Optional state from Editor.
10041
10042        SavedState(Parcelable superState) {
10043            super(superState);
10044        }
10045
10046        @Override
10047        public void writeToParcel(Parcel out, int flags) {
10048            super.writeToParcel(out, flags);
10049            out.writeInt(selStart);
10050            out.writeInt(selEnd);
10051            out.writeInt(frozenWithFocus ? 1 : 0);
10052            TextUtils.writeToParcel(text, out, flags);
10053
10054            if (error == null) {
10055                out.writeInt(0);
10056            } else {
10057                out.writeInt(1);
10058                TextUtils.writeToParcel(error, out, flags);
10059            }
10060
10061            if (editorState == null) {
10062                out.writeInt(0);
10063            } else {
10064                out.writeInt(1);
10065                editorState.writeToParcel(out, flags);
10066            }
10067        }
10068
10069        @Override
10070        public String toString() {
10071            String str = "TextView.SavedState{"
10072                    + Integer.toHexString(System.identityHashCode(this))
10073                    + " start=" + selStart + " end=" + selEnd;
10074            if (text != null) {
10075                str += " text=" + text;
10076            }
10077            return str + "}";
10078        }
10079
10080        @SuppressWarnings("hiding")
10081        public static final Parcelable.Creator<SavedState> CREATOR
10082                = new Parcelable.Creator<SavedState>() {
10083            public SavedState createFromParcel(Parcel in) {
10084                return new SavedState(in);
10085            }
10086
10087            public SavedState[] newArray(int size) {
10088                return new SavedState[size];
10089            }
10090        };
10091
10092        private SavedState(Parcel in) {
10093            super(in);
10094            selStart = in.readInt();
10095            selEnd = in.readInt();
10096            frozenWithFocus = (in.readInt() != 0);
10097            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
10098
10099            if (in.readInt() != 0) {
10100                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
10101            }
10102
10103            if (in.readInt() != 0) {
10104                editorState = ParcelableParcel.CREATOR.createFromParcel(in);
10105            }
10106        }
10107    }
10108
10109    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
10110        private char[] mChars;
10111        private int mStart, mLength;
10112
10113        public CharWrapper(char[] chars, int start, int len) {
10114            mChars = chars;
10115            mStart = start;
10116            mLength = len;
10117        }
10118
10119        /* package */ void set(char[] chars, int start, int len) {
10120            mChars = chars;
10121            mStart = start;
10122            mLength = len;
10123        }
10124
10125        public int length() {
10126            return mLength;
10127        }
10128
10129        public char charAt(int off) {
10130            return mChars[off + mStart];
10131        }
10132
10133        @Override
10134        public String toString() {
10135            return new String(mChars, mStart, mLength);
10136        }
10137
10138        public CharSequence subSequence(int start, int end) {
10139            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10140                throw new IndexOutOfBoundsException(start + ", " + end);
10141            }
10142
10143            return new String(mChars, start + mStart, end - start);
10144        }
10145
10146        public void getChars(int start, int end, char[] buf, int off) {
10147            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10148                throw new IndexOutOfBoundsException(start + ", " + end);
10149            }
10150
10151            System.arraycopy(mChars, start + mStart, buf, off, end - start);
10152        }
10153
10154        public void drawText(Canvas c, int start, int end,
10155                             float x, float y, Paint p) {
10156            c.drawText(mChars, start + mStart, end - start, x, y, p);
10157        }
10158
10159        public void drawTextRun(Canvas c, int start, int end,
10160                int contextStart, int contextEnd, float x, float y, boolean isRtl, Paint p) {
10161            int count = end - start;
10162            int contextCount = contextEnd - contextStart;
10163            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
10164                    contextCount, x, y, isRtl, p);
10165        }
10166
10167        public float measureText(int start, int end, Paint p) {
10168            return p.measureText(mChars, start + mStart, end - start);
10169        }
10170
10171        public int getTextWidths(int start, int end, float[] widths, Paint p) {
10172            return p.getTextWidths(mChars, start + mStart, end - start, widths);
10173        }
10174
10175        public float getTextRunAdvances(int start, int end, int contextStart,
10176                int contextEnd, boolean isRtl, float[] advances, int advancesIndex,
10177                Paint p) {
10178            int count = end - start;
10179            int contextCount = contextEnd - contextStart;
10180            return p.getTextRunAdvances(mChars, start + mStart, count,
10181                    contextStart + mStart, contextCount, isRtl, advances,
10182                    advancesIndex);
10183        }
10184
10185        public int getTextRunCursor(int contextStart, int contextEnd, int dir,
10186                int offset, int cursorOpt, Paint p) {
10187            int contextCount = contextEnd - contextStart;
10188            return p.getTextRunCursor(mChars, contextStart + mStart,
10189                    contextCount, dir, offset + mStart, cursorOpt);
10190        }
10191    }
10192
10193    private static final class Marquee {
10194        // TODO: Add an option to configure this
10195        private static final float MARQUEE_DELTA_MAX = 0.07f;
10196        private static final int MARQUEE_DELAY = 1200;
10197        private static final int MARQUEE_DP_PER_SECOND = 30;
10198
10199        private static final byte MARQUEE_STOPPED = 0x0;
10200        private static final byte MARQUEE_STARTING = 0x1;
10201        private static final byte MARQUEE_RUNNING = 0x2;
10202
10203        private final WeakReference<TextView> mView;
10204        private final Choreographer mChoreographer;
10205
10206        private byte mStatus = MARQUEE_STOPPED;
10207        private final float mPixelsPerSecond;
10208        private float mMaxScroll;
10209        private float mMaxFadeScroll;
10210        private float mGhostStart;
10211        private float mGhostOffset;
10212        private float mFadeStop;
10213        private int mRepeatLimit;
10214
10215        private float mScroll;
10216        private long mLastAnimationMs;
10217
10218        Marquee(TextView v) {
10219            final float density = v.getContext().getResources().getDisplayMetrics().density;
10220            mPixelsPerSecond = MARQUEE_DP_PER_SECOND * density;
10221            mView = new WeakReference<TextView>(v);
10222            mChoreographer = Choreographer.getInstance();
10223        }
10224
10225        private Choreographer.FrameCallback mTickCallback = new Choreographer.FrameCallback() {
10226            @Override
10227            public void doFrame(long frameTimeNanos) {
10228                tick();
10229            }
10230        };
10231
10232        private Choreographer.FrameCallback mStartCallback = new Choreographer.FrameCallback() {
10233            @Override
10234            public void doFrame(long frameTimeNanos) {
10235                mStatus = MARQUEE_RUNNING;
10236                mLastAnimationMs = mChoreographer.getFrameTime();
10237                tick();
10238            }
10239        };
10240
10241        private Choreographer.FrameCallback mRestartCallback = new Choreographer.FrameCallback() {
10242            @Override
10243            public void doFrame(long frameTimeNanos) {
10244                if (mStatus == MARQUEE_RUNNING) {
10245                    if (mRepeatLimit >= 0) {
10246                        mRepeatLimit--;
10247                    }
10248                    start(mRepeatLimit);
10249                }
10250            }
10251        };
10252
10253        void tick() {
10254            if (mStatus != MARQUEE_RUNNING) {
10255                return;
10256            }
10257
10258            mChoreographer.removeFrameCallback(mTickCallback);
10259
10260            final TextView textView = mView.get();
10261            if (textView != null && (textView.isFocused() || textView.isSelected())) {
10262                long currentMs = mChoreographer.getFrameTime();
10263                long deltaMs = currentMs - mLastAnimationMs;
10264                mLastAnimationMs = currentMs;
10265                float deltaPx = deltaMs / 1000f * mPixelsPerSecond;
10266                mScroll += deltaPx;
10267                if (mScroll > mMaxScroll) {
10268                    mScroll = mMaxScroll;
10269                    mChoreographer.postFrameCallbackDelayed(mRestartCallback, MARQUEE_DELAY);
10270                } else {
10271                    mChoreographer.postFrameCallback(mTickCallback);
10272                }
10273                textView.invalidate();
10274            }
10275        }
10276
10277        void stop() {
10278            mStatus = MARQUEE_STOPPED;
10279            mChoreographer.removeFrameCallback(mStartCallback);
10280            mChoreographer.removeFrameCallback(mRestartCallback);
10281            mChoreographer.removeFrameCallback(mTickCallback);
10282            resetScroll();
10283        }
10284
10285        private void resetScroll() {
10286            mScroll = 0.0f;
10287            final TextView textView = mView.get();
10288            if (textView != null) textView.invalidate();
10289        }
10290
10291        void start(int repeatLimit) {
10292            if (repeatLimit == 0) {
10293                stop();
10294                return;
10295            }
10296            mRepeatLimit = repeatLimit;
10297            final TextView textView = mView.get();
10298            if (textView != null && textView.mLayout != null) {
10299                mStatus = MARQUEE_STARTING;
10300                mScroll = 0.0f;
10301                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
10302                        textView.getCompoundPaddingRight();
10303                final float lineWidth = textView.mLayout.getLineWidth(0);
10304                final float gap = textWidth / 3.0f;
10305                mGhostStart = lineWidth - textWidth + gap;
10306                mMaxScroll = mGhostStart + textWidth;
10307                mGhostOffset = lineWidth + gap;
10308                mFadeStop = lineWidth + textWidth / 6.0f;
10309                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
10310
10311                textView.invalidate();
10312                mChoreographer.postFrameCallback(mStartCallback);
10313            }
10314        }
10315
10316        float getGhostOffset() {
10317            return mGhostOffset;
10318        }
10319
10320        float getScroll() {
10321            return mScroll;
10322        }
10323
10324        float getMaxFadeScroll() {
10325            return mMaxFadeScroll;
10326        }
10327
10328        boolean shouldDrawLeftFade() {
10329            return mScroll <= mFadeStop;
10330        }
10331
10332        boolean shouldDrawGhost() {
10333            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
10334        }
10335
10336        boolean isRunning() {
10337            return mStatus == MARQUEE_RUNNING;
10338        }
10339
10340        boolean isStopped() {
10341            return mStatus == MARQUEE_STOPPED;
10342        }
10343    }
10344
10345    private class ChangeWatcher implements TextWatcher, SpanWatcher {
10346
10347        private CharSequence mBeforeText;
10348
10349        public void beforeTextChanged(CharSequence buffer, int start,
10350                                      int before, int after) {
10351            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
10352                    + " before=" + before + " after=" + after + ": " + buffer);
10353
10354            if (AccessibilityManager.getInstance(mContext).isEnabled()
10355                    && ((!isPasswordInputType(getInputType()) && !hasPasswordTransformationMethod())
10356                            || shouldSpeakPasswordsForAccessibility())) {
10357                mBeforeText = buffer.toString();
10358            }
10359
10360            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
10361        }
10362
10363        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
10364            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
10365                    + " before=" + before + " after=" + after + ": " + buffer);
10366            TextView.this.handleTextChanged(buffer, start, before, after);
10367
10368            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
10369                    (isFocused() || isSelected() && isShown())) {
10370                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
10371                mBeforeText = null;
10372            }
10373        }
10374
10375        public void afterTextChanged(Editable buffer) {
10376            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
10377            TextView.this.sendAfterTextChanged(buffer);
10378
10379            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
10380                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
10381            }
10382        }
10383
10384        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
10385            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
10386                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
10387            TextView.this.spanChange(buf, what, s, st, e, en);
10388        }
10389
10390        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
10391            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
10392                    + " what=" + what + ": " + buf);
10393            TextView.this.spanChange(buf, what, -1, s, -1, e);
10394        }
10395
10396        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
10397            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
10398                    + " what=" + what + ": " + buf);
10399            TextView.this.spanChange(buf, what, s, -1, e, -1);
10400        }
10401    }
10402}
10403