TextView.java revision 23cbe85610f780134cc77dd4a54732a22ed6e86e 
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
1944    /**
1945     * Returns the top padding of the view, plus space for the top
1946     * Drawable if any.
1947     */
1948    public int getCompoundPaddingTop() {
1949        final Drawables dr = mDrawables;
1950        if (dr == null || dr.mShowing[Drawables.TOP] == null) {
1951            return mPaddingTop;
1952        } else {
1953            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1954        }
1955    }
1956
1957    /**
1958     * Returns the bottom padding of the view, plus space for the bottom
1959     * Drawable if any.
1960     */
1961    public int getCompoundPaddingBottom() {
1962        final Drawables dr = mDrawables;
1963        if (dr == null || dr.mShowing[Drawables.BOTTOM] == null) {
1964            return mPaddingBottom;
1965        } else {
1966            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1967        }
1968    }
1969
1970    /**
1971     * Returns the left padding of the view, plus space for the left
1972     * Drawable if any.
1973     */
1974    public int getCompoundPaddingLeft() {
1975        final Drawables dr = mDrawables;
1976        if (dr == null || dr.mShowing[Drawables.LEFT] == null) {
1977            return mPaddingLeft;
1978        } else {
1979            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1980        }
1981    }
1982
1983    /**
1984     * Returns the right padding of the view, plus space for the right
1985     * Drawable if any.
1986     */
1987    public int getCompoundPaddingRight() {
1988        final Drawables dr = mDrawables;
1989        if (dr == null || dr.mShowing[Drawables.RIGHT] == null) {
1990            return mPaddingRight;
1991        } else {
1992            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1993        }
1994    }
1995
1996    /**
1997     * Returns the start padding of the view, plus space for the start
1998     * Drawable if any.
1999     */
2000    public int getCompoundPaddingStart() {
2001        resolveDrawables();
2002        switch(getLayoutDirection()) {
2003            default:
2004            case LAYOUT_DIRECTION_LTR:
2005                return getCompoundPaddingLeft();
2006            case LAYOUT_DIRECTION_RTL:
2007                return getCompoundPaddingRight();
2008        }
2009    }
2010
2011    /**
2012     * Returns the end padding of the view, plus space for the end
2013     * Drawable if any.
2014     */
2015    public int getCompoundPaddingEnd() {
2016        resolveDrawables();
2017        switch(getLayoutDirection()) {
2018            default:
2019            case LAYOUT_DIRECTION_LTR:
2020                return getCompoundPaddingRight();
2021            case LAYOUT_DIRECTION_RTL:
2022                return getCompoundPaddingLeft();
2023        }
2024    }
2025
2026    /**
2027     * Returns the extended top padding of the view, including both the
2028     * top Drawable if any and any extra space to keep more than maxLines
2029     * of text from showing.  It is only valid to call this after measuring.
2030     */
2031    public int getExtendedPaddingTop() {
2032        if (mMaxMode != LINES) {
2033            return getCompoundPaddingTop();
2034        }
2035
2036        if (mLayout == null) {
2037            assumeLayout();
2038        }
2039
2040        if (mLayout.getLineCount() <= mMaximum) {
2041            return getCompoundPaddingTop();
2042        }
2043
2044        int top = getCompoundPaddingTop();
2045        int bottom = getCompoundPaddingBottom();
2046        int viewht = getHeight() - top - bottom;
2047        int layoutht = mLayout.getLineTop(mMaximum);
2048
2049        if (layoutht >= viewht) {
2050            return top;
2051        }
2052
2053        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2054        if (gravity == Gravity.TOP) {
2055            return top;
2056        } else if (gravity == Gravity.BOTTOM) {
2057            return top + viewht - layoutht;
2058        } else { // (gravity == Gravity.CENTER_VERTICAL)
2059            return top + (viewht - layoutht) / 2;
2060        }
2061    }
2062
2063    /**
2064     * Returns the extended bottom padding of the view, including both the
2065     * bottom Drawable if any and any extra space to keep more than maxLines
2066     * of text from showing.  It is only valid to call this after measuring.
2067     */
2068    public int getExtendedPaddingBottom() {
2069        if (mMaxMode != LINES) {
2070            return getCompoundPaddingBottom();
2071        }
2072
2073        if (mLayout == null) {
2074            assumeLayout();
2075        }
2076
2077        if (mLayout.getLineCount() <= mMaximum) {
2078            return getCompoundPaddingBottom();
2079        }
2080
2081        int top = getCompoundPaddingTop();
2082        int bottom = getCompoundPaddingBottom();
2083        int viewht = getHeight() - top - bottom;
2084        int layoutht = mLayout.getLineTop(mMaximum);
2085
2086        if (layoutht >= viewht) {
2087            return bottom;
2088        }
2089
2090        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2091        if (gravity == Gravity.TOP) {
2092            return bottom + viewht - layoutht;
2093        } else if (gravity == Gravity.BOTTOM) {
2094            return bottom;
2095        } else { // (gravity == Gravity.CENTER_VERTICAL)
2096            return bottom + (viewht - layoutht) / 2;
2097        }
2098    }
2099
2100    /**
2101     * Returns the total left padding of the view, including the left
2102     * Drawable if any.
2103     */
2104    public int getTotalPaddingLeft() {
2105        return getCompoundPaddingLeft();
2106    }
2107
2108    /**
2109     * Returns the total right padding of the view, including the right
2110     * Drawable if any.
2111     */
2112    public int getTotalPaddingRight() {
2113        return getCompoundPaddingRight();
2114    }
2115
2116    /**
2117     * Returns the total start padding of the view, including the start
2118     * Drawable if any.
2119     */
2120    public int getTotalPaddingStart() {
2121        return getCompoundPaddingStart();
2122    }
2123
2124    /**
2125     * Returns the total end padding of the view, including the end
2126     * Drawable if any.
2127     */
2128    public int getTotalPaddingEnd() {
2129        return getCompoundPaddingEnd();
2130    }
2131
2132    /**
2133     * Returns the total top padding of the view, including the top
2134     * Drawable if any, the extra space to keep more than maxLines
2135     * from showing, and the vertical offset for gravity, if any.
2136     */
2137    public int getTotalPaddingTop() {
2138        return getExtendedPaddingTop() + getVerticalOffset(true);
2139    }
2140
2141    /**
2142     * Returns the total bottom padding of the view, including the bottom
2143     * Drawable if any, the extra space to keep more than maxLines
2144     * from showing, and the vertical offset for gravity, if any.
2145     */
2146    public int getTotalPaddingBottom() {
2147        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
2148    }
2149
2150    /**
2151     * Sets the Drawables (if any) to appear to the left of, above, to the
2152     * right of, and below the text. Use {@code null} if you do not want a
2153     * Drawable there. The Drawables must already have had
2154     * {@link Drawable#setBounds} called.
2155     * <p>
2156     * Calling this method will overwrite any Drawables previously set using
2157     * {@link #setCompoundDrawablesRelative} or related methods.
2158     *
2159     * @attr ref android.R.styleable#TextView_drawableLeft
2160     * @attr ref android.R.styleable#TextView_drawableTop
2161     * @attr ref android.R.styleable#TextView_drawableRight
2162     * @attr ref android.R.styleable#TextView_drawableBottom
2163     */
2164    public void setCompoundDrawables(@Nullable Drawable left, @Nullable Drawable top,
2165            @Nullable Drawable right, @Nullable Drawable bottom) {
2166        Drawables dr = mDrawables;
2167
2168        // We're switching to absolute, discard relative.
2169        if (dr != null) {
2170            if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2171            dr.mDrawableStart = null;
2172            if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2173            dr.mDrawableEnd = null;
2174            dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2175            dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2176        }
2177
2178        final boolean drawables = left != null || top != null || right != null || bottom != null;
2179        if (!drawables) {
2180            // Clearing drawables...  can we free the data structure?
2181            if (dr != null) {
2182                if (!dr.hasMetadata()) {
2183                    mDrawables = null;
2184                } else {
2185                    // We need to retain the last set padding, so just clear
2186                    // out all of the fields in the existing structure.
2187                    for (int i = dr.mShowing.length - 1; i >= 0; i--) {
2188                        if (dr.mShowing[i] != null) {
2189                            dr.mShowing[i].setCallback(null);
2190                        }
2191                        dr.mShowing[i] = null;
2192                    }
2193                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2194                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2195                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2196                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2197                }
2198            }
2199        } else {
2200            if (dr == null) {
2201                mDrawables = dr = new Drawables(getContext());
2202            }
2203
2204            mDrawables.mOverride = false;
2205
2206            if (dr.mShowing[Drawables.LEFT] != left && dr.mShowing[Drawables.LEFT] != null) {
2207                dr.mShowing[Drawables.LEFT].setCallback(null);
2208            }
2209            dr.mShowing[Drawables.LEFT] = left;
2210
2211            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2212                dr.mShowing[Drawables.TOP].setCallback(null);
2213            }
2214            dr.mShowing[Drawables.TOP] = top;
2215
2216            if (dr.mShowing[Drawables.RIGHT] != right && dr.mShowing[Drawables.RIGHT] != null) {
2217                dr.mShowing[Drawables.RIGHT].setCallback(null);
2218            }
2219            dr.mShowing[Drawables.RIGHT] = right;
2220
2221            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2222                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2223            }
2224            dr.mShowing[Drawables.BOTTOM] = bottom;
2225
2226            final Rect compoundRect = dr.mCompoundRect;
2227            int[] state;
2228
2229            state = getDrawableState();
2230
2231            if (left != null) {
2232                left.setState(state);
2233                left.copyBounds(compoundRect);
2234                left.setCallback(this);
2235                dr.mDrawableSizeLeft = compoundRect.width();
2236                dr.mDrawableHeightLeft = compoundRect.height();
2237            } else {
2238                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2239            }
2240
2241            if (right != null) {
2242                right.setState(state);
2243                right.copyBounds(compoundRect);
2244                right.setCallback(this);
2245                dr.mDrawableSizeRight = compoundRect.width();
2246                dr.mDrawableHeightRight = compoundRect.height();
2247            } else {
2248                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2249            }
2250
2251            if (top != null) {
2252                top.setState(state);
2253                top.copyBounds(compoundRect);
2254                top.setCallback(this);
2255                dr.mDrawableSizeTop = compoundRect.height();
2256                dr.mDrawableWidthTop = compoundRect.width();
2257            } else {
2258                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2259            }
2260
2261            if (bottom != null) {
2262                bottom.setState(state);
2263                bottom.copyBounds(compoundRect);
2264                bottom.setCallback(this);
2265                dr.mDrawableSizeBottom = compoundRect.height();
2266                dr.mDrawableWidthBottom = compoundRect.width();
2267            } else {
2268                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2269            }
2270        }
2271
2272        // Save initial left/right drawables
2273        if (dr != null) {
2274            dr.mDrawableLeftInitial = left;
2275            dr.mDrawableRightInitial = right;
2276        }
2277
2278        resetResolvedDrawables();
2279        resolveDrawables();
2280        applyCompoundDrawableTint();
2281        invalidate();
2282        requestLayout();
2283    }
2284
2285    /**
2286     * Sets the Drawables (if any) to appear to the left of, above, to the
2287     * right of, and below the text. Use 0 if you do not want a Drawable there.
2288     * The Drawables' bounds will be set to their intrinsic bounds.
2289     * <p>
2290     * Calling this method will overwrite any Drawables previously set using
2291     * {@link #setCompoundDrawablesRelative} or related methods.
2292     *
2293     * @param left Resource identifier of the left Drawable.
2294     * @param top Resource identifier of the top Drawable.
2295     * @param right Resource identifier of the right Drawable.
2296     * @param bottom Resource identifier of the bottom Drawable.
2297     *
2298     * @attr ref android.R.styleable#TextView_drawableLeft
2299     * @attr ref android.R.styleable#TextView_drawableTop
2300     * @attr ref android.R.styleable#TextView_drawableRight
2301     * @attr ref android.R.styleable#TextView_drawableBottom
2302     */
2303    @android.view.RemotableViewMethod
2304    public void setCompoundDrawablesWithIntrinsicBounds(@DrawableRes int left,
2305            @DrawableRes int top, @DrawableRes int right, @DrawableRes int bottom) {
2306        final Context context = getContext();
2307        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? context.getDrawable(left) : null,
2308                top != 0 ? context.getDrawable(top) : null,
2309                right != 0 ? context.getDrawable(right) : null,
2310                bottom != 0 ? context.getDrawable(bottom) : null);
2311    }
2312
2313    /**
2314     * Sets the Drawables (if any) to appear to the left of, above, to the
2315     * right of, and below the text. Use {@code null} if you do not want a
2316     * Drawable there. The Drawables' bounds will be set to their intrinsic
2317     * bounds.
2318     * <p>
2319     * Calling this method will overwrite any Drawables previously set using
2320     * {@link #setCompoundDrawablesRelative} or related methods.
2321     *
2322     * @attr ref android.R.styleable#TextView_drawableLeft
2323     * @attr ref android.R.styleable#TextView_drawableTop
2324     * @attr ref android.R.styleable#TextView_drawableRight
2325     * @attr ref android.R.styleable#TextView_drawableBottom
2326     */
2327    @android.view.RemotableViewMethod
2328    public void setCompoundDrawablesWithIntrinsicBounds(@Nullable Drawable left,
2329            @Nullable Drawable top, @Nullable Drawable right, @Nullable Drawable bottom) {
2330
2331        if (left != null) {
2332            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
2333        }
2334        if (right != null) {
2335            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
2336        }
2337        if (top != null) {
2338            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2339        }
2340        if (bottom != null) {
2341            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2342        }
2343        setCompoundDrawables(left, top, right, bottom);
2344    }
2345
2346    /**
2347     * Sets the Drawables (if any) to appear to the start of, above, to the end
2348     * of, and below the text. Use {@code null} if you do not want a Drawable
2349     * there. The Drawables must already have had {@link Drawable#setBounds}
2350     * called.
2351     * <p>
2352     * Calling this method will overwrite any Drawables previously set using
2353     * {@link #setCompoundDrawables} or related methods.
2354     *
2355     * @attr ref android.R.styleable#TextView_drawableStart
2356     * @attr ref android.R.styleable#TextView_drawableTop
2357     * @attr ref android.R.styleable#TextView_drawableEnd
2358     * @attr ref android.R.styleable#TextView_drawableBottom
2359     */
2360    @android.view.RemotableViewMethod
2361    public void setCompoundDrawablesRelative(@Nullable Drawable start, @Nullable Drawable top,
2362            @Nullable Drawable end, @Nullable Drawable bottom) {
2363        Drawables dr = mDrawables;
2364
2365        // We're switching to relative, discard absolute.
2366        if (dr != null) {
2367            if (dr.mShowing[Drawables.LEFT] != null) {
2368                dr.mShowing[Drawables.LEFT].setCallback(null);
2369            }
2370            dr.mShowing[Drawables.LEFT] = dr.mDrawableLeftInitial = null;
2371            if (dr.mShowing[Drawables.RIGHT] != null) {
2372                dr.mShowing[Drawables.RIGHT].setCallback(null);
2373            }
2374            dr.mShowing[Drawables.RIGHT] = dr.mDrawableRightInitial = null;
2375            dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2376            dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2377        }
2378
2379        final boolean drawables = start != null || top != null
2380                || end != null || bottom != null;
2381
2382        if (!drawables) {
2383            // Clearing drawables...  can we free the data structure?
2384            if (dr != null) {
2385                if (!dr.hasMetadata()) {
2386                    mDrawables = null;
2387                } else {
2388                    // We need to retain the last set padding, so just clear
2389                    // out all of the fields in the existing structure.
2390                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2391                    dr.mDrawableStart = null;
2392                    if (dr.mShowing[Drawables.TOP] != null) {
2393                        dr.mShowing[Drawables.TOP].setCallback(null);
2394                    }
2395                    dr.mShowing[Drawables.TOP] = null;
2396                    if (dr.mDrawableEnd != null) {
2397                        dr.mDrawableEnd.setCallback(null);
2398                    }
2399                    dr.mDrawableEnd = null;
2400                    if (dr.mShowing[Drawables.BOTTOM] != null) {
2401                        dr.mShowing[Drawables.BOTTOM].setCallback(null);
2402                    }
2403                    dr.mShowing[Drawables.BOTTOM] = null;
2404                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2405                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2406                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2407                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2408                }
2409            }
2410        } else {
2411            if (dr == null) {
2412                mDrawables = dr = new Drawables(getContext());
2413            }
2414
2415            mDrawables.mOverride = true;
2416
2417            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
2418                dr.mDrawableStart.setCallback(null);
2419            }
2420            dr.mDrawableStart = start;
2421
2422            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2423                dr.mShowing[Drawables.TOP].setCallback(null);
2424            }
2425            dr.mShowing[Drawables.TOP] = top;
2426
2427            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
2428                dr.mDrawableEnd.setCallback(null);
2429            }
2430            dr.mDrawableEnd = end;
2431
2432            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2433                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2434            }
2435            dr.mShowing[Drawables.BOTTOM] = bottom;
2436
2437            final Rect compoundRect = dr.mCompoundRect;
2438            int[] state;
2439
2440            state = getDrawableState();
2441
2442            if (start != null) {
2443                start.setState(state);
2444                start.copyBounds(compoundRect);
2445                start.setCallback(this);
2446                dr.mDrawableSizeStart = compoundRect.width();
2447                dr.mDrawableHeightStart = compoundRect.height();
2448            } else {
2449                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2450            }
2451
2452            if (end != null) {
2453                end.setState(state);
2454                end.copyBounds(compoundRect);
2455                end.setCallback(this);
2456                dr.mDrawableSizeEnd = compoundRect.width();
2457                dr.mDrawableHeightEnd = compoundRect.height();
2458            } else {
2459                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2460            }
2461
2462            if (top != null) {
2463                top.setState(state);
2464                top.copyBounds(compoundRect);
2465                top.setCallback(this);
2466                dr.mDrawableSizeTop = compoundRect.height();
2467                dr.mDrawableWidthTop = compoundRect.width();
2468            } else {
2469                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2470            }
2471
2472            if (bottom != null) {
2473                bottom.setState(state);
2474                bottom.copyBounds(compoundRect);
2475                bottom.setCallback(this);
2476                dr.mDrawableSizeBottom = compoundRect.height();
2477                dr.mDrawableWidthBottom = compoundRect.width();
2478            } else {
2479                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2480            }
2481        }
2482
2483        resetResolvedDrawables();
2484        resolveDrawables();
2485        invalidate();
2486        requestLayout();
2487    }
2488
2489    /**
2490     * Sets the Drawables (if any) to appear to the start of, above, to the end
2491     * of, and below the text. Use 0 if you do not want a Drawable there. The
2492     * Drawables' bounds will be set to their intrinsic bounds.
2493     * <p>
2494     * Calling this method will overwrite any Drawables previously set using
2495     * {@link #setCompoundDrawables} or related methods.
2496     *
2497     * @param start Resource identifier of the start Drawable.
2498     * @param top Resource identifier of the top Drawable.
2499     * @param end Resource identifier of the end Drawable.
2500     * @param bottom Resource identifier of the bottom Drawable.
2501     *
2502     * @attr ref android.R.styleable#TextView_drawableStart
2503     * @attr ref android.R.styleable#TextView_drawableTop
2504     * @attr ref android.R.styleable#TextView_drawableEnd
2505     * @attr ref android.R.styleable#TextView_drawableBottom
2506     */
2507    @android.view.RemotableViewMethod
2508    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@DrawableRes int start,
2509            @DrawableRes int top, @DrawableRes int end, @DrawableRes int bottom) {
2510        final Context context = getContext();
2511        setCompoundDrawablesRelativeWithIntrinsicBounds(
2512                start != 0 ? context.getDrawable(start) : null,
2513                top != 0 ? context.getDrawable(top) : null,
2514                end != 0 ? context.getDrawable(end) : null,
2515                bottom != 0 ? context.getDrawable(bottom) : null);
2516    }
2517
2518    /**
2519     * Sets the Drawables (if any) to appear to the start of, above, to the end
2520     * of, and below the text. Use {@code null} if you do not want a Drawable
2521     * there. The Drawables' bounds will be set to their intrinsic bounds.
2522     * <p>
2523     * Calling this method will overwrite any Drawables previously set using
2524     * {@link #setCompoundDrawables} or related methods.
2525     *
2526     * @attr ref android.R.styleable#TextView_drawableStart
2527     * @attr ref android.R.styleable#TextView_drawableTop
2528     * @attr ref android.R.styleable#TextView_drawableEnd
2529     * @attr ref android.R.styleable#TextView_drawableBottom
2530     */
2531    @android.view.RemotableViewMethod
2532    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@Nullable Drawable start,
2533            @Nullable Drawable top, @Nullable Drawable end, @Nullable Drawable bottom) {
2534
2535        if (start != null) {
2536            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2537        }
2538        if (end != null) {
2539            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2540        }
2541        if (top != null) {
2542            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2543        }
2544        if (bottom != null) {
2545            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2546        }
2547        setCompoundDrawablesRelative(start, top, end, bottom);
2548    }
2549
2550    /**
2551     * Returns drawables for the left, top, right, and bottom borders.
2552     *
2553     * @attr ref android.R.styleable#TextView_drawableLeft
2554     * @attr ref android.R.styleable#TextView_drawableTop
2555     * @attr ref android.R.styleable#TextView_drawableRight
2556     * @attr ref android.R.styleable#TextView_drawableBottom
2557     */
2558    @NonNull
2559    public Drawable[] getCompoundDrawables() {
2560        final Drawables dr = mDrawables;
2561        if (dr != null) {
2562            return dr.mShowing.clone();
2563        } else {
2564            return new Drawable[] { null, null, null, null };
2565        }
2566    }
2567
2568    /**
2569     * Returns drawables for the start, top, end, and bottom borders.
2570     *
2571     * @attr ref android.R.styleable#TextView_drawableStart
2572     * @attr ref android.R.styleable#TextView_drawableTop
2573     * @attr ref android.R.styleable#TextView_drawableEnd
2574     * @attr ref android.R.styleable#TextView_drawableBottom
2575     */
2576    @NonNull
2577    public Drawable[] getCompoundDrawablesRelative() {
2578        final Drawables dr = mDrawables;
2579        if (dr != null) {
2580            return new Drawable[] {
2581                dr.mDrawableStart, dr.mShowing[Drawables.TOP],
2582                dr.mDrawableEnd, dr.mShowing[Drawables.BOTTOM]
2583            };
2584        } else {
2585            return new Drawable[] { null, null, null, null };
2586        }
2587    }
2588
2589    /**
2590     * Sets the size of the padding between the compound drawables and
2591     * the text.
2592     *
2593     * @attr ref android.R.styleable#TextView_drawablePadding
2594     */
2595    @android.view.RemotableViewMethod
2596    public void setCompoundDrawablePadding(int pad) {
2597        Drawables dr = mDrawables;
2598        if (pad == 0) {
2599            if (dr != null) {
2600                dr.mDrawablePadding = pad;
2601            }
2602        } else {
2603            if (dr == null) {
2604                mDrawables = dr = new Drawables(getContext());
2605            }
2606            dr.mDrawablePadding = pad;
2607        }
2608
2609        invalidate();
2610        requestLayout();
2611    }
2612
2613    /**
2614     * Returns the padding between the compound drawables and the text.
2615     *
2616     * @attr ref android.R.styleable#TextView_drawablePadding
2617     */
2618    public int getCompoundDrawablePadding() {
2619        final Drawables dr = mDrawables;
2620        return dr != null ? dr.mDrawablePadding : 0;
2621    }
2622
2623    /**
2624     * Applies a tint to the compound drawables. Does not modify the
2625     * current tint mode, which is {@link PorterDuff.Mode#SRC_IN} by default.
2626     * <p>
2627     * Subsequent calls to
2628     * {@link #setCompoundDrawables(Drawable, Drawable, Drawable, Drawable)}
2629     * and related methods will automatically mutate the drawables and apply
2630     * the specified tint and tint mode using
2631     * {@link Drawable#setTintList(ColorStateList)}.
2632     *
2633     * @param tint the tint to apply, may be {@code null} to clear tint
2634     *
2635     * @attr ref android.R.styleable#TextView_drawableTint
2636     * @see #getCompoundDrawableTintList()
2637     * @see Drawable#setTintList(ColorStateList)
2638     */
2639    public void setCompoundDrawableTintList(@Nullable ColorStateList tint) {
2640        if (mDrawables == null) {
2641            mDrawables = new Drawables(getContext());
2642        }
2643        mDrawables.mTintList = tint;
2644        mDrawables.mHasTint = true;
2645
2646        applyCompoundDrawableTint();
2647    }
2648
2649    /**
2650     * @return the tint applied to the compound drawables
2651     * @attr ref android.R.styleable#TextView_drawableTint
2652     * @see #setCompoundDrawableTintList(ColorStateList)
2653     */
2654    public ColorStateList getCompoundDrawableTintList() {
2655        return mDrawables != null ? mDrawables.mTintList : null;
2656    }
2657
2658    /**
2659     * Specifies the blending mode used to apply the tint specified by
2660     * {@link #setCompoundDrawableTintList(ColorStateList)} to the compound
2661     * drawables. The default mode is {@link PorterDuff.Mode#SRC_IN}.
2662     *
2663     * @param tintMode the blending mode used to apply the tint, may be
2664     *                 {@code null} to clear tint
2665     * @attr ref android.R.styleable#TextView_drawableTintMode
2666     * @see #setCompoundDrawableTintList(ColorStateList)
2667     * @see Drawable#setTintMode(PorterDuff.Mode)
2668     */
2669    public void setCompoundDrawableTintMode(@Nullable PorterDuff.Mode tintMode) {
2670        if (mDrawables == null) {
2671            mDrawables = new Drawables(getContext());
2672        }
2673        mDrawables.mTintMode = tintMode;
2674        mDrawables.mHasTintMode = true;
2675
2676        applyCompoundDrawableTint();
2677    }
2678
2679    /**
2680     * Returns the blending mode used to apply the tint to the compound
2681     * drawables, if specified.
2682     *
2683     * @return the blending mode used to apply the tint to the compound
2684     *         drawables
2685     * @attr ref android.R.styleable#TextView_drawableTintMode
2686     * @see #setCompoundDrawableTintMode(PorterDuff.Mode)
2687     */
2688    public PorterDuff.Mode getCompoundDrawableTintMode() {
2689        return mDrawables != null ? mDrawables.mTintMode : null;
2690    }
2691
2692    private void applyCompoundDrawableTint() {
2693        if (mDrawables == null) {
2694            return;
2695        }
2696
2697        if (mDrawables.mHasTint || mDrawables.mHasTintMode) {
2698            final ColorStateList tintList = mDrawables.mTintList;
2699            final PorterDuff.Mode tintMode = mDrawables.mTintMode;
2700            final boolean hasTint = mDrawables.mHasTint;
2701            final boolean hasTintMode = mDrawables.mHasTintMode;
2702            final int[] state = getDrawableState();
2703
2704            for (Drawable dr : mDrawables.mShowing) {
2705                if (dr == null) {
2706                    continue;
2707                }
2708
2709                if (dr == mDrawables.mDrawableError) {
2710                    // From a developer's perspective, the error drawable isn't
2711                    // a compound drawable. Don't apply the generic compound
2712                    // drawable tint to it.
2713                    continue;
2714                }
2715
2716                dr.mutate();
2717
2718                if (hasTint) {
2719                    dr.setTintList(tintList);
2720                }
2721
2722                if (hasTintMode) {
2723                    dr.setTintMode(tintMode);
2724                }
2725
2726                // The drawable (or one of its children) may not have been
2727                // stateful before applying the tint, so let's try again.
2728                if (dr.isStateful()) {
2729                    dr.setState(state);
2730                }
2731            }
2732        }
2733    }
2734
2735    @Override
2736    public void setPadding(int left, int top, int right, int bottom) {
2737        if (left != mPaddingLeft ||
2738            right != mPaddingRight ||
2739            top != mPaddingTop ||
2740            bottom != mPaddingBottom) {
2741            nullLayouts();
2742        }
2743
2744        // the super call will requestLayout()
2745        super.setPadding(left, top, right, bottom);
2746        invalidate();
2747    }
2748
2749    @Override
2750    public void setPaddingRelative(int start, int top, int end, int bottom) {
2751        if (start != getPaddingStart() ||
2752            end != getPaddingEnd() ||
2753            top != mPaddingTop ||
2754            bottom != mPaddingBottom) {
2755            nullLayouts();
2756        }
2757
2758        // the super call will requestLayout()
2759        super.setPaddingRelative(start, top, end, bottom);
2760        invalidate();
2761    }
2762
2763    /**
2764     * Gets the autolink mask of the text.  See {@link
2765     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2766     * possible values.
2767     *
2768     * @attr ref android.R.styleable#TextView_autoLink
2769     */
2770    public final int getAutoLinkMask() {
2771        return mAutoLinkMask;
2772    }
2773
2774    /**
2775     * Sets the text appearance from the specified style resource.
2776     * <p>
2777     * Use a framework-defined {@code TextAppearance} style like
2778     * {@link android.R.style#TextAppearance_Material_Body1 @android:style/TextAppearance.Material.Body1}
2779     * or see {@link android.R.styleable#TextAppearance TextAppearance} for the
2780     * set of attributes that can be used in a custom style.
2781     *
2782     * @param resId the resource identifier of the style to apply
2783     * @attr ref android.R.styleable#TextView_textAppearance
2784     */
2785    @SuppressWarnings("deprecation")
2786    public void setTextAppearance(@StyleRes int resId) {
2787        setTextAppearance(mContext, resId);
2788    }
2789
2790    /**
2791     * Sets the text color, size, style, hint color, and highlight color
2792     * from the specified TextAppearance resource.
2793     *
2794     * @deprecated Use {@link #setTextAppearance(int)} instead.
2795     */
2796    @Deprecated
2797    public void setTextAppearance(Context context, @StyleRes int resId) {
2798        final TypedArray ta = context.obtainStyledAttributes(resId, R.styleable.TextAppearance);
2799
2800        final int textColorHighlight = ta.getColor(
2801                R.styleable.TextAppearance_textColorHighlight, 0);
2802        if (textColorHighlight != 0) {
2803            setHighlightColor(textColorHighlight);
2804        }
2805
2806        final ColorStateList textColor = ta.getColorStateList(R.styleable.TextAppearance_textColor);
2807        if (textColor != null) {
2808            setTextColor(textColor);
2809        }
2810
2811        final int textSize = ta.getDimensionPixelSize(R.styleable.TextAppearance_textSize, 0);
2812        if (textSize != 0) {
2813            setRawTextSize(textSize);
2814        }
2815
2816        final ColorStateList textColorHint = ta.getColorStateList(
2817                R.styleable.TextAppearance_textColorHint);
2818        if (textColorHint != null) {
2819            setHintTextColor(textColorHint);
2820        }
2821
2822        final ColorStateList textColorLink = ta.getColorStateList(
2823                R.styleable.TextAppearance_textColorLink);
2824        if (textColorLink != null) {
2825            setLinkTextColor(textColorLink);
2826        }
2827
2828        final String fontFamily = ta.getString(R.styleable.TextAppearance_fontFamily);
2829        final int typefaceIndex = ta.getInt(R.styleable.TextAppearance_typeface, -1);
2830        final int styleIndex = ta.getInt(R.styleable.TextAppearance_textStyle, -1);
2831        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
2832
2833        final int shadowColor = ta.getInt(R.styleable.TextAppearance_shadowColor, 0);
2834        if (shadowColor != 0) {
2835            final float dx = ta.getFloat(R.styleable.TextAppearance_shadowDx, 0);
2836            final float dy = ta.getFloat(R.styleable.TextAppearance_shadowDy, 0);
2837            final float r = ta.getFloat(R.styleable.TextAppearance_shadowRadius, 0);
2838            setShadowLayer(r, dx, dy, shadowColor);
2839        }
2840
2841        if (ta.getBoolean(R.styleable.TextAppearance_textAllCaps, false)) {
2842            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2843        }
2844
2845        if (ta.hasValue(R.styleable.TextAppearance_elegantTextHeight)) {
2846            setElegantTextHeight(ta.getBoolean(
2847                R.styleable.TextAppearance_elegantTextHeight, false));
2848        }
2849
2850        if (ta.hasValue(R.styleable.TextAppearance_letterSpacing)) {
2851            setLetterSpacing(ta.getFloat(
2852                R.styleable.TextAppearance_letterSpacing, 0));
2853        }
2854
2855        if (ta.hasValue(R.styleable.TextAppearance_fontFeatureSettings)) {
2856            setFontFeatureSettings(ta.getString(
2857                R.styleable.TextAppearance_fontFeatureSettings));
2858        }
2859
2860        ta.recycle();
2861    }
2862
2863    /**
2864     * Get the default primary {@link Locale} of the text in this TextView. This will always be
2865     * the first member of {@link #getTextLocales()}.
2866     * @return the default primary {@link Locale} of the text in this TextView.
2867     */
2868    @NonNull
2869    public Locale getTextLocale() {
2870        return mTextPaint.getTextLocale();
2871    }
2872
2873    /**
2874     * Get the default {@link LocaleList} of the text in this TextView.
2875     * @return the default {@link LocaleList} of the text in this TextView.
2876     */
2877    @NonNull @Size(min=1)
2878    public LocaleList getTextLocales() {
2879        return mTextPaint.getTextLocales();
2880    }
2881
2882    /**
2883     * Set the default {@link LocaleList} of the text in this TextView to a one-member list
2884     * containing just the given value.
2885     *
2886     * @param locale the {@link Locale} for drawing text, must not be null.
2887     *
2888     * @see #setTextLocales
2889     */
2890    public void setTextLocale(@NonNull Locale locale) {
2891        mLocalesChanged = true;
2892        mTextPaint.setTextLocale(locale);
2893        if (mLayout != null) {
2894            nullLayouts();
2895            requestLayout();
2896            invalidate();
2897        }
2898    }
2899
2900    /**
2901     * Set the default {@link LocaleList} of the text in this TextView to the given value.
2902     *
2903     * This value is used to choose appropriate typefaces for ambiguous characters (typically used
2904     * for CJK locales to disambiguate Hanzi/Kanji/Hanja characters). It also affects
2905     * other aspects of text display, including line breaking.
2906     *
2907     * @param locales the {@link LocaleList} for drawing text, must not be null or empty.
2908     *
2909     * @see Paint#setTextLocales
2910     */
2911    public void setTextLocales(@NonNull @Size(min=1) LocaleList locales) {
2912        mLocalesChanged = true;
2913        mTextPaint.setTextLocales(locales);
2914        if (mLayout != null) {
2915            nullLayouts();
2916            requestLayout();
2917            invalidate();
2918        }
2919    }
2920
2921    @Override
2922    protected void onConfigurationChanged(Configuration newConfig) {
2923        super.onConfigurationChanged(newConfig);
2924        if (!mLocalesChanged) {
2925            mTextPaint.setTextLocales(LocaleList.getDefault());
2926            if (mLayout != null) {
2927                nullLayouts();
2928                requestLayout();
2929                invalidate();
2930            }
2931        }
2932    }
2933
2934    /**
2935     * @return the size (in pixels) of the default text size in this TextView.
2936     */
2937    @ViewDebug.ExportedProperty(category = "text")
2938    public float getTextSize() {
2939        return mTextPaint.getTextSize();
2940    }
2941
2942    /**
2943     * @return the size (in scaled pixels) of thee default text size in this TextView.
2944     * @hide
2945     */
2946    @ViewDebug.ExportedProperty(category = "text")
2947    public float getScaledTextSize() {
2948        return mTextPaint.getTextSize() / mTextPaint.density;
2949    }
2950
2951    /** @hide */
2952    @ViewDebug.ExportedProperty(category = "text", mapping = {
2953            @ViewDebug.IntToString(from = Typeface.NORMAL, to = "NORMAL"),
2954            @ViewDebug.IntToString(from = Typeface.BOLD, to = "BOLD"),
2955            @ViewDebug.IntToString(from = Typeface.ITALIC, to = "ITALIC"),
2956            @ViewDebug.IntToString(from = Typeface.BOLD_ITALIC, to = "BOLD_ITALIC")
2957    })
2958    public int getTypefaceStyle() {
2959        Typeface typeface = mTextPaint.getTypeface();
2960        return typeface != null ? typeface.getStyle() : Typeface.NORMAL;
2961    }
2962
2963    /**
2964     * Set the default text size to the given value, interpreted as "scaled
2965     * pixel" units.  This size is adjusted based on the current density and
2966     * user font size preference.
2967     *
2968     * @param size The scaled pixel size.
2969     *
2970     * @attr ref android.R.styleable#TextView_textSize
2971     */
2972    @android.view.RemotableViewMethod
2973    public void setTextSize(float size) {
2974        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2975    }
2976
2977    /**
2978     * Set the default text size to a given unit and value.  See {@link
2979     * TypedValue} for the possible dimension units.
2980     *
2981     * @param unit The desired dimension unit.
2982     * @param size The desired size in the given units.
2983     *
2984     * @attr ref android.R.styleable#TextView_textSize
2985     */
2986    public void setTextSize(int unit, float size) {
2987        Context c = getContext();
2988        Resources r;
2989
2990        if (c == null)
2991            r = Resources.getSystem();
2992        else
2993            r = c.getResources();
2994
2995        setRawTextSize(TypedValue.applyDimension(
2996                unit, size, r.getDisplayMetrics()));
2997    }
2998
2999    private void setRawTextSize(float size) {
3000        if (size != mTextPaint.getTextSize()) {
3001            mTextPaint.setTextSize(size);
3002
3003            if (mLayout != null) {
3004                nullLayouts();
3005                requestLayout();
3006                invalidate();
3007            }
3008        }
3009    }
3010
3011    /**
3012     * @return the extent by which text is currently being stretched
3013     * horizontally.  This will usually be 1.
3014     */
3015    public float getTextScaleX() {
3016        return mTextPaint.getTextScaleX();
3017    }
3018
3019    /**
3020     * Sets the extent by which text should be stretched horizontally.
3021     *
3022     * @attr ref android.R.styleable#TextView_textScaleX
3023     */
3024    @android.view.RemotableViewMethod
3025    public void setTextScaleX(float size) {
3026        if (size != mTextPaint.getTextScaleX()) {
3027            mUserSetTextScaleX = true;
3028            mTextPaint.setTextScaleX(size);
3029
3030            if (mLayout != null) {
3031                nullLayouts();
3032                requestLayout();
3033                invalidate();
3034            }
3035        }
3036    }
3037
3038    /**
3039     * Sets the typeface and style in which the text should be displayed.
3040     * Note that not all Typeface families actually have bold and italic
3041     * variants, so you may need to use
3042     * {@link #setTypeface(Typeface, int)} to get the appearance
3043     * that you actually want.
3044     *
3045     * @see #getTypeface()
3046     *
3047     * @attr ref android.R.styleable#TextView_fontFamily
3048     * @attr ref android.R.styleable#TextView_typeface
3049     * @attr ref android.R.styleable#TextView_textStyle
3050     */
3051    public void setTypeface(Typeface tf) {
3052        if (mTextPaint.getTypeface() != tf) {
3053            mTextPaint.setTypeface(tf);
3054
3055            if (mLayout != null) {
3056                nullLayouts();
3057                requestLayout();
3058                invalidate();
3059            }
3060        }
3061    }
3062
3063    /**
3064     * @return the current typeface and style in which the text is being
3065     * displayed.
3066     *
3067     * @see #setTypeface(Typeface)
3068     *
3069     * @attr ref android.R.styleable#TextView_fontFamily
3070     * @attr ref android.R.styleable#TextView_typeface
3071     * @attr ref android.R.styleable#TextView_textStyle
3072     */
3073    public Typeface getTypeface() {
3074        return mTextPaint.getTypeface();
3075    }
3076
3077    /**
3078     * Set the TextView's elegant height metrics flag. This setting selects font
3079     * variants that have not been compacted to fit Latin-based vertical
3080     * metrics, and also increases top and bottom bounds to provide more space.
3081     *
3082     * @param elegant set the paint's elegant metrics flag.
3083     *
3084     * @attr ref android.R.styleable#TextView_elegantTextHeight
3085     */
3086    public void setElegantTextHeight(boolean elegant) {
3087        if (elegant != mTextPaint.isElegantTextHeight()) {
3088            mTextPaint.setElegantTextHeight(elegant);
3089            if (mLayout != null) {
3090                nullLayouts();
3091                requestLayout();
3092                invalidate();
3093            }
3094        }
3095    }
3096
3097    /**
3098     * @return the extent by which text is currently being letter-spaced.
3099     * This will normally be 0.
3100     *
3101     * @see #setLetterSpacing(float)
3102     * @see Paint#setLetterSpacing
3103     */
3104    public float getLetterSpacing() {
3105        return mTextPaint.getLetterSpacing();
3106    }
3107
3108    /**
3109     * Sets text letter-spacing.  The value is in 'EM' units.  Typical values
3110     * for slight expansion will be around 0.05.  Negative values tighten text.
3111     *
3112     * @see #getLetterSpacing()
3113     * @see Paint#getLetterSpacing
3114     *
3115     * @attr ref android.R.styleable#TextView_letterSpacing
3116     */
3117    @android.view.RemotableViewMethod
3118    public void setLetterSpacing(float letterSpacing) {
3119        if (letterSpacing != mTextPaint.getLetterSpacing()) {
3120            mTextPaint.setLetterSpacing(letterSpacing);
3121
3122            if (mLayout != null) {
3123                nullLayouts();
3124                requestLayout();
3125                invalidate();
3126            }
3127        }
3128    }
3129
3130    /**
3131     * Returns the font feature settings. The format is the same as the CSS
3132     * font-feature-settings attribute:
3133     * <a href="http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings">
3134     *     http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings</a>
3135     *
3136     * @return the currently set font feature settings.  Default is null.
3137     *
3138     * @see #setFontFeatureSettings(String)
3139     * @see Paint#setFontFeatureSettings(String) Paint.setFontFeatureSettings(String)
3140     */
3141    @Nullable
3142    public String getFontFeatureSettings() {
3143        return mTextPaint.getFontFeatureSettings();
3144    }
3145
3146    /**
3147     * Sets the break strategy for breaking paragraphs into lines. The default value for
3148     * TextView is {@link Layout#BREAK_STRATEGY_HIGH_QUALITY}, and the default value for
3149     * EditText is {@link Layout#BREAK_STRATEGY_SIMPLE}, the latter to avoid the
3150     * text "dancing" when being edited.
3151     *
3152     * @attr ref android.R.styleable#TextView_breakStrategy
3153     * @see #getBreakStrategy()
3154     */
3155    public void setBreakStrategy(@Layout.BreakStrategy int breakStrategy) {
3156        mBreakStrategy = breakStrategy;
3157        if (mLayout != null) {
3158            nullLayouts();
3159            requestLayout();
3160            invalidate();
3161        }
3162    }
3163
3164    /**
3165     * @return the currently set break strategy.
3166     *
3167     * @attr ref android.R.styleable#TextView_breakStrategy
3168     * @see #setBreakStrategy(int)
3169     */
3170    @Layout.BreakStrategy
3171    public int getBreakStrategy() {
3172        return mBreakStrategy;
3173    }
3174
3175    /**
3176     * Sets the hyphenation frequency. The default value for both TextView and EditText, which is set
3177     * from the theme, is {@link Layout#HYPHENATION_FREQUENCY_NORMAL}.
3178     *
3179     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3180     * @see #getHyphenationFrequency()
3181     */
3182    public void setHyphenationFrequency(@Layout.HyphenationFrequency int hyphenationFrequency) {
3183        mHyphenationFrequency = hyphenationFrequency;
3184        if (mLayout != null) {
3185            nullLayouts();
3186            requestLayout();
3187            invalidate();
3188        }
3189    }
3190
3191    /**
3192     * @return the currently set hyphenation frequency.
3193     *
3194     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3195     * @see #setHyphenationFrequency(int)
3196     */
3197    @Layout.HyphenationFrequency
3198    public int getHyphenationFrequency() {
3199        return mHyphenationFrequency;
3200    }
3201
3202    /**
3203     * Sets font feature settings. The format is the same as the CSS
3204     * font-feature-settings attribute:
3205     * <a href="http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings">
3206     *     http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings</a>
3207     *
3208     * @param fontFeatureSettings font feature settings represented as CSS compatible string
3209     *
3210     * @see #getFontFeatureSettings()
3211     * @see Paint#getFontFeatureSettings() Paint.getFontFeatureSettings()
3212     *
3213     * @attr ref android.R.styleable#TextView_fontFeatureSettings
3214     */
3215    @android.view.RemotableViewMethod
3216    public void setFontFeatureSettings(@Nullable String fontFeatureSettings) {
3217        if (fontFeatureSettings != mTextPaint.getFontFeatureSettings()) {
3218            mTextPaint.setFontFeatureSettings(fontFeatureSettings);
3219
3220            if (mLayout != null) {
3221                nullLayouts();
3222                requestLayout();
3223                invalidate();
3224            }
3225        }
3226    }
3227
3228
3229    /**
3230     * Sets the text color for all the states (normal, selected,
3231     * focused) to be this color.
3232     *
3233     * @see #setTextColor(ColorStateList)
3234     * @see #getTextColors()
3235     *
3236     * @attr ref android.R.styleable#TextView_textColor
3237     */
3238    @android.view.RemotableViewMethod
3239    public void setTextColor(@ColorInt int color) {
3240        mTextColor = ColorStateList.valueOf(color);
3241        updateTextColors();
3242    }
3243
3244    /**
3245     * Sets the text color.
3246     *
3247     * @see #setTextColor(int)
3248     * @see #getTextColors()
3249     * @see #setHintTextColor(ColorStateList)
3250     * @see #setLinkTextColor(ColorStateList)
3251     *
3252     * @attr ref android.R.styleable#TextView_textColor
3253     */
3254    public void setTextColor(ColorStateList colors) {
3255        if (colors == null) {
3256            throw new NullPointerException();
3257        }
3258
3259        mTextColor = colors;
3260        updateTextColors();
3261    }
3262
3263    /**
3264     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
3265     *
3266     * @see #setTextColor(ColorStateList)
3267     * @see #setTextColor(int)
3268     *
3269     * @attr ref android.R.styleable#TextView_textColor
3270     */
3271    public final ColorStateList getTextColors() {
3272        return mTextColor;
3273    }
3274
3275    /**
3276     * <p>Return the current color selected for normal text.</p>
3277     *
3278     * @return Returns the current text color.
3279     */
3280    @ColorInt
3281    public final int getCurrentTextColor() {
3282        return mCurTextColor;
3283    }
3284
3285    /**
3286     * Sets the color used to display the selection highlight.
3287     *
3288     * @attr ref android.R.styleable#TextView_textColorHighlight
3289     */
3290    @android.view.RemotableViewMethod
3291    public void setHighlightColor(@ColorInt int color) {
3292        if (mHighlightColor != color) {
3293            mHighlightColor = color;
3294            invalidate();
3295        }
3296    }
3297
3298    /**
3299     * @return the color used to display the selection highlight
3300     *
3301     * @see #setHighlightColor(int)
3302     *
3303     * @attr ref android.R.styleable#TextView_textColorHighlight
3304     */
3305    @ColorInt
3306    public int getHighlightColor() {
3307        return mHighlightColor;
3308    }
3309
3310    /**
3311     * Sets whether the soft input method will be made visible when this
3312     * TextView gets focused. The default is true.
3313     */
3314    @android.view.RemotableViewMethod
3315    public final void setShowSoftInputOnFocus(boolean show) {
3316        createEditorIfNeeded();
3317        mEditor.mShowSoftInputOnFocus = show;
3318    }
3319
3320    /**
3321     * Returns whether the soft input method will be made visible when this
3322     * TextView gets focused. The default is true.
3323     */
3324    public final boolean getShowSoftInputOnFocus() {
3325        // When there is no Editor, return default true value
3326        return mEditor == null || mEditor.mShowSoftInputOnFocus;
3327    }
3328
3329    /**
3330     * Gives the text a shadow of the specified blur radius and color, the specified
3331     * distance from its drawn position.
3332     * <p>
3333     * The text shadow produced does not interact with the properties on view
3334     * that are responsible for real time shadows,
3335     * {@link View#getElevation() elevation} and
3336     * {@link View#getTranslationZ() translationZ}.
3337     *
3338     * @see Paint#setShadowLayer(float, float, float, int)
3339     *
3340     * @attr ref android.R.styleable#TextView_shadowColor
3341     * @attr ref android.R.styleable#TextView_shadowDx
3342     * @attr ref android.R.styleable#TextView_shadowDy
3343     * @attr ref android.R.styleable#TextView_shadowRadius
3344     */
3345    public void setShadowLayer(float radius, float dx, float dy, int color) {
3346        mTextPaint.setShadowLayer(radius, dx, dy, color);
3347
3348        mShadowRadius = radius;
3349        mShadowDx = dx;
3350        mShadowDy = dy;
3351        mShadowColor = color;
3352
3353        // Will change text clip region
3354        if (mEditor != null) {
3355            mEditor.invalidateTextDisplayList();
3356            mEditor.invalidateHandlesAndActionMode();
3357        }
3358        invalidate();
3359    }
3360
3361    /**
3362     * Gets the radius of the shadow layer.
3363     *
3364     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
3365     *
3366     * @see #setShadowLayer(float, float, float, int)
3367     *
3368     * @attr ref android.R.styleable#TextView_shadowRadius
3369     */
3370    public float getShadowRadius() {
3371        return mShadowRadius;
3372    }
3373
3374    /**
3375     * @return the horizontal offset of the shadow layer
3376     *
3377     * @see #setShadowLayer(float, float, float, int)
3378     *
3379     * @attr ref android.R.styleable#TextView_shadowDx
3380     */
3381    public float getShadowDx() {
3382        return mShadowDx;
3383    }
3384
3385    /**
3386     * @return the vertical offset of the shadow layer
3387     *
3388     * @see #setShadowLayer(float, float, float, int)
3389     *
3390     * @attr ref android.R.styleable#TextView_shadowDy
3391     */
3392    public float getShadowDy() {
3393        return mShadowDy;
3394    }
3395
3396    /**
3397     * @return the color of the shadow layer
3398     *
3399     * @see #setShadowLayer(float, float, float, int)
3400     *
3401     * @attr ref android.R.styleable#TextView_shadowColor
3402     */
3403    @ColorInt
3404    public int getShadowColor() {
3405        return mShadowColor;
3406    }
3407
3408    /**
3409     * @return the base paint used for the text.  Please use this only to
3410     * consult the Paint's properties and not to change them.
3411     */
3412    public TextPaint getPaint() {
3413        return mTextPaint;
3414    }
3415
3416    /**
3417     * Sets the autolink mask of the text.  See {@link
3418     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
3419     * possible values.
3420     *
3421     * @attr ref android.R.styleable#TextView_autoLink
3422     */
3423    @android.view.RemotableViewMethod
3424    public final void setAutoLinkMask(int mask) {
3425        mAutoLinkMask = mask;
3426    }
3427
3428    /**
3429     * Sets whether the movement method will automatically be set to
3430     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
3431     * set to nonzero and links are detected in {@link #setText}.
3432     * The default is true.
3433     *
3434     * @attr ref android.R.styleable#TextView_linksClickable
3435     */
3436    @android.view.RemotableViewMethod
3437    public final void setLinksClickable(boolean whether) {
3438        mLinksClickable = whether;
3439    }
3440
3441    /**
3442     * Returns whether the movement method will automatically be set to
3443     * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been
3444     * set to nonzero and links are detected in {@link #setText}.
3445     * The default is true.
3446     *
3447     * @attr ref android.R.styleable#TextView_linksClickable
3448     */
3449    public final boolean getLinksClickable() {
3450        return mLinksClickable;
3451    }
3452
3453    /**
3454     * Returns the list of URLSpans attached to the text
3455     * (by {@link Linkify} or otherwise) if any.  You can call
3456     * {@link URLSpan#getURL} on them to find where they link to
3457     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
3458     * to find the region of the text they are attached to.
3459     */
3460    public URLSpan[] getUrls() {
3461        if (mText instanceof Spanned) {
3462            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
3463        } else {
3464            return new URLSpan[0];
3465        }
3466    }
3467
3468    /**
3469     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
3470     * TextView.
3471     *
3472     * @see #setHintTextColor(ColorStateList)
3473     * @see #getHintTextColors()
3474     * @see #setTextColor(int)
3475     *
3476     * @attr ref android.R.styleable#TextView_textColorHint
3477     */
3478    @android.view.RemotableViewMethod
3479    public final void setHintTextColor(@ColorInt int color) {
3480        mHintTextColor = ColorStateList.valueOf(color);
3481        updateTextColors();
3482    }
3483
3484    /**
3485     * Sets the color of the hint text.
3486     *
3487     * @see #getHintTextColors()
3488     * @see #setHintTextColor(int)
3489     * @see #setTextColor(ColorStateList)
3490     * @see #setLinkTextColor(ColorStateList)
3491     *
3492     * @attr ref android.R.styleable#TextView_textColorHint
3493     */
3494    public final void setHintTextColor(ColorStateList colors) {
3495        mHintTextColor = colors;
3496        updateTextColors();
3497    }
3498
3499    /**
3500     * @return the color of the hint text, for the different states of this TextView.
3501     *
3502     * @see #setHintTextColor(ColorStateList)
3503     * @see #setHintTextColor(int)
3504     * @see #setTextColor(ColorStateList)
3505     * @see #setLinkTextColor(ColorStateList)
3506     *
3507     * @attr ref android.R.styleable#TextView_textColorHint
3508     */
3509    public final ColorStateList getHintTextColors() {
3510        return mHintTextColor;
3511    }
3512
3513    /**
3514     * <p>Return the current color selected to paint the hint text.</p>
3515     *
3516     * @return Returns the current hint text color.
3517     */
3518    @ColorInt
3519    public final int getCurrentHintTextColor() {
3520        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
3521    }
3522
3523    /**
3524     * Sets the color of links in the text.
3525     *
3526     * @see #setLinkTextColor(ColorStateList)
3527     * @see #getLinkTextColors()
3528     *
3529     * @attr ref android.R.styleable#TextView_textColorLink
3530     */
3531    @android.view.RemotableViewMethod
3532    public final void setLinkTextColor(@ColorInt int color) {
3533        mLinkTextColor = ColorStateList.valueOf(color);
3534        updateTextColors();
3535    }
3536
3537    /**
3538     * Sets the color of links in the text.
3539     *
3540     * @see #setLinkTextColor(int)
3541     * @see #getLinkTextColors()
3542     * @see #setTextColor(ColorStateList)
3543     * @see #setHintTextColor(ColorStateList)
3544     *
3545     * @attr ref android.R.styleable#TextView_textColorLink
3546     */
3547    public final void setLinkTextColor(ColorStateList colors) {
3548        mLinkTextColor = colors;
3549        updateTextColors();
3550    }
3551
3552    /**
3553     * @return the list of colors used to paint the links in the text, for the different states of
3554     * this TextView
3555     *
3556     * @see #setLinkTextColor(ColorStateList)
3557     * @see #setLinkTextColor(int)
3558     *
3559     * @attr ref android.R.styleable#TextView_textColorLink
3560     */
3561    public final ColorStateList getLinkTextColors() {
3562        return mLinkTextColor;
3563    }
3564
3565    /**
3566     * Sets the horizontal alignment of the text and the
3567     * vertical gravity that will be used when there is extra space
3568     * in the TextView beyond what is required for the text itself.
3569     *
3570     * @see android.view.Gravity
3571     * @attr ref android.R.styleable#TextView_gravity
3572     */
3573    public void setGravity(int gravity) {
3574        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
3575            gravity |= Gravity.START;
3576        }
3577        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
3578            gravity |= Gravity.TOP;
3579        }
3580
3581        boolean newLayout = false;
3582
3583        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
3584            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
3585            newLayout = true;
3586        }
3587
3588        if (gravity != mGravity) {
3589            invalidate();
3590        }
3591
3592        mGravity = gravity;
3593
3594        if (mLayout != null && newLayout) {
3595            // XXX this is heavy-handed because no actual content changes.
3596            int want = mLayout.getWidth();
3597            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
3598
3599            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
3600                          mRight - mLeft - getCompoundPaddingLeft() -
3601                          getCompoundPaddingRight(), true);
3602        }
3603    }
3604
3605    /**
3606     * Returns the horizontal and vertical alignment of this TextView.
3607     *
3608     * @see android.view.Gravity
3609     * @attr ref android.R.styleable#TextView_gravity
3610     */
3611    public int getGravity() {
3612        return mGravity;
3613    }
3614
3615    /**
3616     * @return the flags on the Paint being used to display the text.
3617     * @see Paint#getFlags
3618     */
3619    public int getPaintFlags() {
3620        return mTextPaint.getFlags();
3621    }
3622
3623    /**
3624     * Sets flags on the Paint being used to display the text and
3625     * reflows the text if they are different from the old flags.
3626     * @see Paint#setFlags
3627     */
3628    @android.view.RemotableViewMethod
3629    public void setPaintFlags(int flags) {
3630        if (mTextPaint.getFlags() != flags) {
3631            mTextPaint.setFlags(flags);
3632
3633            if (mLayout != null) {
3634                nullLayouts();
3635                requestLayout();
3636                invalidate();
3637            }
3638        }
3639    }
3640
3641    /**
3642     * Sets whether the text should be allowed to be wider than the
3643     * View is.  If false, it will be wrapped to the width of the View.
3644     *
3645     * @attr ref android.R.styleable#TextView_scrollHorizontally
3646     */
3647    public void setHorizontallyScrolling(boolean whether) {
3648        if (mHorizontallyScrolling != whether) {
3649            mHorizontallyScrolling = whether;
3650
3651            if (mLayout != null) {
3652                nullLayouts();
3653                requestLayout();
3654                invalidate();
3655            }
3656        }
3657    }
3658
3659    /**
3660     * Returns whether the text is allowed to be wider than the View is.
3661     * If false, the text will be wrapped to the width of the View.
3662     *
3663     * @attr ref android.R.styleable#TextView_scrollHorizontally
3664     * @hide
3665     */
3666    public boolean getHorizontallyScrolling() {
3667        return mHorizontallyScrolling;
3668    }
3669
3670    /**
3671     * Makes the TextView at least this many lines tall.
3672     *
3673     * Setting this value overrides any other (minimum) height setting. A single line TextView will
3674     * set this value to 1.
3675     *
3676     * @see #getMinLines()
3677     *
3678     * @attr ref android.R.styleable#TextView_minLines
3679     */
3680    @android.view.RemotableViewMethod
3681    public void setMinLines(int minlines) {
3682        mMinimum = minlines;
3683        mMinMode = LINES;
3684
3685        requestLayout();
3686        invalidate();
3687    }
3688
3689    /**
3690     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
3691     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
3692     *
3693     * @see #setMinLines(int)
3694     *
3695     * @attr ref android.R.styleable#TextView_minLines
3696     */
3697    public int getMinLines() {
3698        return mMinMode == LINES ? mMinimum : -1;
3699    }
3700
3701    /**
3702     * Makes the TextView at least this many pixels tall.
3703     *
3704     * Setting this value overrides any other (minimum) number of lines setting.
3705     *
3706     * @attr ref android.R.styleable#TextView_minHeight
3707     */
3708    @android.view.RemotableViewMethod
3709    public void setMinHeight(int minHeight) {
3710        mMinimum = minHeight;
3711        mMinMode = PIXELS;
3712
3713        requestLayout();
3714        invalidate();
3715    }
3716
3717    /**
3718     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
3719     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
3720     *
3721     * @see #setMinHeight(int)
3722     *
3723     * @attr ref android.R.styleable#TextView_minHeight
3724     */
3725    public int getMinHeight() {
3726        return mMinMode == PIXELS ? mMinimum : -1;
3727    }
3728
3729    /**
3730     * Makes the TextView at most this many lines tall.
3731     *
3732     * Setting this value overrides any other (maximum) height setting.
3733     *
3734     * @attr ref android.R.styleable#TextView_maxLines
3735     */
3736    @android.view.RemotableViewMethod
3737    public void setMaxLines(int maxlines) {
3738        mMaximum = maxlines;
3739        mMaxMode = LINES;
3740
3741        requestLayout();
3742        invalidate();
3743    }
3744
3745    /**
3746     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
3747     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
3748     *
3749     * @see #setMaxLines(int)
3750     *
3751     * @attr ref android.R.styleable#TextView_maxLines
3752     */
3753    public int getMaxLines() {
3754        return mMaxMode == LINES ? mMaximum : -1;
3755    }
3756
3757    /**
3758     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
3759     * {@link #setMaxLines(int)} method.
3760     *
3761     * Setting this value overrides any other (maximum) number of lines setting.
3762     *
3763     * @attr ref android.R.styleable#TextView_maxHeight
3764     */
3765    @android.view.RemotableViewMethod
3766    public void setMaxHeight(int maxHeight) {
3767        mMaximum = maxHeight;
3768        mMaxMode = PIXELS;
3769
3770        requestLayout();
3771        invalidate();
3772    }
3773
3774    /**
3775     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
3776     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
3777     *
3778     * @see #setMaxHeight(int)
3779     *
3780     * @attr ref android.R.styleable#TextView_maxHeight
3781     */
3782    public int getMaxHeight() {
3783        return mMaxMode == PIXELS ? mMaximum : -1;
3784    }
3785
3786    /**
3787     * Makes the TextView exactly this many lines tall.
3788     *
3789     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3790     * height setting. A single line TextView will set this value to 1.
3791     *
3792     * @attr ref android.R.styleable#TextView_lines
3793     */
3794    @android.view.RemotableViewMethod
3795    public void setLines(int lines) {
3796        mMaximum = mMinimum = lines;
3797        mMaxMode = mMinMode = LINES;
3798
3799        requestLayout();
3800        invalidate();
3801    }
3802
3803    /**
3804     * Makes the TextView exactly this many pixels tall.
3805     * You could do the same thing by specifying this number in the
3806     * LayoutParams.
3807     *
3808     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3809     * height setting.
3810     *
3811     * @attr ref android.R.styleable#TextView_height
3812     */
3813    @android.view.RemotableViewMethod
3814    public void setHeight(int pixels) {
3815        mMaximum = mMinimum = pixels;
3816        mMaxMode = mMinMode = PIXELS;
3817
3818        requestLayout();
3819        invalidate();
3820    }
3821
3822    /**
3823     * Makes the TextView at least this many ems wide
3824     *
3825     * @attr ref android.R.styleable#TextView_minEms
3826     */
3827    @android.view.RemotableViewMethod
3828    public void setMinEms(int minems) {
3829        mMinWidth = minems;
3830        mMinWidthMode = EMS;
3831
3832        requestLayout();
3833        invalidate();
3834    }
3835
3836    /**
3837     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
3838     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
3839     *
3840     * @see #setMinEms(int)
3841     * @see #setEms(int)
3842     *
3843     * @attr ref android.R.styleable#TextView_minEms
3844     */
3845    public int getMinEms() {
3846        return mMinWidthMode == EMS ? mMinWidth : -1;
3847    }
3848
3849    /**
3850     * Makes the TextView at least this many pixels wide
3851     *
3852     * @attr ref android.R.styleable#TextView_minWidth
3853     */
3854    @android.view.RemotableViewMethod
3855    public void setMinWidth(int minpixels) {
3856        mMinWidth = minpixels;
3857        mMinWidthMode = PIXELS;
3858
3859        requestLayout();
3860        invalidate();
3861    }
3862
3863    /**
3864     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
3865     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
3866     *
3867     * @see #setMinWidth(int)
3868     * @see #setWidth(int)
3869     *
3870     * @attr ref android.R.styleable#TextView_minWidth
3871     */
3872    public int getMinWidth() {
3873        return mMinWidthMode == PIXELS ? mMinWidth : -1;
3874    }
3875
3876    /**
3877     * Makes the TextView at most this many ems wide
3878     *
3879     * @attr ref android.R.styleable#TextView_maxEms
3880     */
3881    @android.view.RemotableViewMethod
3882    public void setMaxEms(int maxems) {
3883        mMaxWidth = maxems;
3884        mMaxWidthMode = EMS;
3885
3886        requestLayout();
3887        invalidate();
3888    }
3889
3890    /**
3891     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3892     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3893     *
3894     * @see #setMaxEms(int)
3895     * @see #setEms(int)
3896     *
3897     * @attr ref android.R.styleable#TextView_maxEms
3898     */
3899    public int getMaxEms() {
3900        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3901    }
3902
3903    /**
3904     * Makes the TextView at most this many pixels wide
3905     *
3906     * @attr ref android.R.styleable#TextView_maxWidth
3907     */
3908    @android.view.RemotableViewMethod
3909    public void setMaxWidth(int maxpixels) {
3910        mMaxWidth = maxpixels;
3911        mMaxWidthMode = PIXELS;
3912
3913        requestLayout();
3914        invalidate();
3915    }
3916
3917    /**
3918     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3919     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3920     *
3921     * @see #setMaxWidth(int)
3922     * @see #setWidth(int)
3923     *
3924     * @attr ref android.R.styleable#TextView_maxWidth
3925     */
3926    public int getMaxWidth() {
3927        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3928    }
3929
3930    /**
3931     * Makes the TextView exactly this many ems wide
3932     *
3933     * @see #setMaxEms(int)
3934     * @see #setMinEms(int)
3935     * @see #getMinEms()
3936     * @see #getMaxEms()
3937     *
3938     * @attr ref android.R.styleable#TextView_ems
3939     */
3940    @android.view.RemotableViewMethod
3941    public void setEms(int ems) {
3942        mMaxWidth = mMinWidth = ems;
3943        mMaxWidthMode = mMinWidthMode = EMS;
3944
3945        requestLayout();
3946        invalidate();
3947    }
3948
3949    /**
3950     * Makes the TextView exactly this many pixels wide.
3951     * You could do the same thing by specifying this number in the
3952     * LayoutParams.
3953     *
3954     * @see #setMaxWidth(int)
3955     * @see #setMinWidth(int)
3956     * @see #getMinWidth()
3957     * @see #getMaxWidth()
3958     *
3959     * @attr ref android.R.styleable#TextView_width
3960     */
3961    @android.view.RemotableViewMethod
3962    public void setWidth(int pixels) {
3963        mMaxWidth = mMinWidth = pixels;
3964        mMaxWidthMode = mMinWidthMode = PIXELS;
3965
3966        requestLayout();
3967        invalidate();
3968    }
3969
3970    /**
3971     * Sets line spacing for this TextView.  Each line will have its height
3972     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3973     *
3974     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3975     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3976     */
3977    public void setLineSpacing(float add, float mult) {
3978        if (mSpacingAdd != add || mSpacingMult != mult) {
3979            mSpacingAdd = add;
3980            mSpacingMult = mult;
3981
3982            if (mLayout != null) {
3983                nullLayouts();
3984                requestLayout();
3985                invalidate();
3986            }
3987        }
3988    }
3989
3990    /**
3991     * Gets the line spacing multiplier
3992     *
3993     * @return the value by which each line's height is multiplied to get its actual height.
3994     *
3995     * @see #setLineSpacing(float, float)
3996     * @see #getLineSpacingExtra()
3997     *
3998     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3999     */
4000    public float getLineSpacingMultiplier() {
4001        return mSpacingMult;
4002    }
4003
4004    /**
4005     * Gets the line spacing extra space
4006     *
4007     * @return the extra space that is added to the height of each lines of this TextView.
4008     *
4009     * @see #setLineSpacing(float, float)
4010     * @see #getLineSpacingMultiplier()
4011     *
4012     * @attr ref android.R.styleable#TextView_lineSpacingExtra
4013     */
4014    public float getLineSpacingExtra() {
4015        return mSpacingAdd;
4016    }
4017
4018    /**
4019     * Convenience method: Append the specified text to the TextView's
4020     * display buffer, upgrading it to BufferType.EDITABLE if it was
4021     * not already editable.
4022     */
4023    public final void append(CharSequence text) {
4024        append(text, 0, text.length());
4025    }
4026
4027    /**
4028     * Convenience method: Append the specified text slice to the TextView's
4029     * display buffer, upgrading it to BufferType.EDITABLE if it was
4030     * not already editable.
4031     */
4032    public void append(CharSequence text, int start, int end) {
4033        if (!(mText instanceof Editable)) {
4034            setText(mText, BufferType.EDITABLE);
4035        }
4036
4037        ((Editable) mText).append(text, start, end);
4038
4039        if (mAutoLinkMask != 0) {
4040            boolean linksWereAdded = Linkify.addLinks((Spannable) mText, mAutoLinkMask);
4041            // Do not change the movement method for text that support text selection as it
4042            // would prevent an arbitrary cursor displacement.
4043            if (linksWereAdded && mLinksClickable && !textCanBeSelected()) {
4044                setMovementMethod(LinkMovementMethod.getInstance());
4045            }
4046        }
4047    }
4048
4049    private void updateTextColors() {
4050        boolean inval = false;
4051        int color = mTextColor.getColorForState(getDrawableState(), 0);
4052        if (color != mCurTextColor) {
4053            mCurTextColor = color;
4054            inval = true;
4055        }
4056        if (mLinkTextColor != null) {
4057            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
4058            if (color != mTextPaint.linkColor) {
4059                mTextPaint.linkColor = color;
4060                inval = true;
4061            }
4062        }
4063        if (mHintTextColor != null) {
4064            color = mHintTextColor.getColorForState(getDrawableState(), 0);
4065            if (color != mCurHintTextColor) {
4066                mCurHintTextColor = color;
4067                if (mText.length() == 0) {
4068                    inval = true;
4069                }
4070            }
4071        }
4072        if (inval) {
4073            // Text needs to be redrawn with the new color
4074            if (mEditor != null) mEditor.invalidateTextDisplayList();
4075            invalidate();
4076        }
4077    }
4078
4079    @Override
4080    protected void drawableStateChanged() {
4081        super.drawableStateChanged();
4082
4083        if (mTextColor != null && mTextColor.isStateful()
4084                || (mHintTextColor != null && mHintTextColor.isStateful())
4085                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
4086            updateTextColors();
4087        }
4088
4089        if (mDrawables != null) {
4090            final int[] state = getDrawableState();
4091            for (Drawable dr : mDrawables.mShowing) {
4092                if (dr != null && dr.isStateful() && dr.setState(state)) {
4093                    invalidateDrawable(dr);
4094                }
4095            }
4096        }
4097    }
4098
4099    @Override
4100    public void drawableHotspotChanged(float x, float y) {
4101        super.drawableHotspotChanged(x, y);
4102
4103        if (mDrawables != null) {
4104            for (Drawable dr : mDrawables.mShowing) {
4105                if (dr != null) {
4106                    dr.setHotspot(x, y);
4107                }
4108            }
4109        }
4110    }
4111
4112    @Override
4113    public Parcelable onSaveInstanceState() {
4114        Parcelable superState = super.onSaveInstanceState();
4115
4116        // Save state if we are forced to
4117        final boolean freezesText = getFreezesText();
4118        boolean hasSelection = false;
4119        int start = -1;
4120        int end = -1;
4121
4122        if (mText != null) {
4123            start = getSelectionStart();
4124            end = getSelectionEnd();
4125            if (start >= 0 || end >= 0) {
4126                // Or save state if there is a selection
4127                hasSelection = true;
4128            }
4129        }
4130
4131        if (freezesText || hasSelection) {
4132            SavedState ss = new SavedState(superState);
4133
4134            if (freezesText) {
4135                if (mText instanceof Spanned) {
4136                    final Spannable sp = new SpannableStringBuilder(mText);
4137
4138                    if (mEditor != null) {
4139                        removeMisspelledSpans(sp);
4140                        sp.removeSpan(mEditor.mSuggestionRangeSpan);
4141                    }
4142
4143                    ss.text = sp;
4144                } else {
4145                    ss.text = mText.toString();
4146                }
4147            }
4148
4149            if (hasSelection) {
4150                // XXX Should also save the current scroll position!
4151                ss.selStart = start;
4152                ss.selEnd = end;
4153            }
4154
4155            if (isFocused() && start >= 0 && end >= 0) {
4156                ss.frozenWithFocus = true;
4157            }
4158
4159            ss.error = getError();
4160
4161            if (mEditor != null) {
4162                ss.editorState = mEditor.saveInstanceState();
4163            }
4164            return ss;
4165        }
4166
4167        return superState;
4168    }
4169
4170    void removeMisspelledSpans(Spannable spannable) {
4171        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
4172                SuggestionSpan.class);
4173        for (int i = 0; i < suggestionSpans.length; i++) {
4174            int flags = suggestionSpans[i].getFlags();
4175            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
4176                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
4177                spannable.removeSpan(suggestionSpans[i]);
4178            }
4179        }
4180    }
4181
4182    @Override
4183    public void onRestoreInstanceState(Parcelable state) {
4184        if (!(state instanceof SavedState)) {
4185            super.onRestoreInstanceState(state);
4186            return;
4187        }
4188
4189        SavedState ss = (SavedState)state;
4190        super.onRestoreInstanceState(ss.getSuperState());
4191
4192        // XXX restore buffer type too, as well as lots of other stuff
4193        if (ss.text != null) {
4194            setText(ss.text);
4195        }
4196
4197        if (ss.selStart >= 0 && ss.selEnd >= 0) {
4198            if (mText instanceof Spannable) {
4199                int len = mText.length();
4200
4201                if (ss.selStart > len || ss.selEnd > len) {
4202                    String restored = "";
4203
4204                    if (ss.text != null) {
4205                        restored = "(restored) ";
4206                    }
4207
4208                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
4209                          "/" + ss.selEnd + " out of range for " + restored +
4210                          "text " + mText);
4211                } else {
4212                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
4213
4214                    if (ss.frozenWithFocus) {
4215                        createEditorIfNeeded();
4216                        mEditor.mFrozenWithFocus = true;
4217                    }
4218                }
4219            }
4220        }
4221
4222        if (ss.error != null) {
4223            final CharSequence error = ss.error;
4224            // Display the error later, after the first layout pass
4225            post(new Runnable() {
4226                public void run() {
4227                    if (mEditor == null || !mEditor.mErrorWasChanged) {
4228                        setError(error);
4229                    }
4230                }
4231            });
4232        }
4233
4234        if (ss.editorState != null) {
4235            createEditorIfNeeded();
4236            mEditor.restoreInstanceState(ss.editorState);
4237        }
4238    }
4239
4240    /**
4241     * Control whether this text view saves its entire text contents when
4242     * freezing to an icicle, in addition to dynamic state such as cursor
4243     * position.  By default this is false, not saving the text.  Set to true
4244     * if the text in the text view is not being saved somewhere else in
4245     * persistent storage (such as in a content provider) so that if the
4246     * view is later thawed the user will not lose their data. For
4247     * {@link android.widget.EditText} it is always enabled, regardless of
4248     * the value of the attribute.
4249     *
4250     * @param freezesText Controls whether a frozen icicle should include the
4251     * entire text data: true to include it, false to not.
4252     *
4253     * @attr ref android.R.styleable#TextView_freezesText
4254     */
4255    @android.view.RemotableViewMethod
4256    public void setFreezesText(boolean freezesText) {
4257        mFreezesText = freezesText;
4258    }
4259
4260    /**
4261     * Return whether this text view is including its entire text contents
4262     * in frozen icicles. For {@link android.widget.EditText} it always returns true.
4263     *
4264     * @return Returns true if text is included, false if it isn't.
4265     *
4266     * @see #setFreezesText
4267     */
4268    public boolean getFreezesText() {
4269        return mFreezesText;
4270    }
4271
4272    ///////////////////////////////////////////////////////////////////////////
4273
4274    /**
4275     * Sets the Factory used to create new Editables.
4276     */
4277    public final void setEditableFactory(Editable.Factory factory) {
4278        mEditableFactory = factory;
4279        setText(mText);
4280    }
4281
4282    /**
4283     * Sets the Factory used to create new Spannables.
4284     */
4285    public final void setSpannableFactory(Spannable.Factory factory) {
4286        mSpannableFactory = factory;
4287        setText(mText);
4288    }
4289
4290    /**
4291     * Sets the string value of the TextView. TextView <em>does not</em> accept
4292     * HTML-like formatting, which you can do with text strings in XML resource files.
4293     * To style your strings, attach android.text.style.* objects to a
4294     * {@link android.text.SpannableString SpannableString}, or see the
4295     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
4296     * Available Resource Types</a> documentation for an example of setting
4297     * formatted text in the XML resource file.
4298     *
4299     * @attr ref android.R.styleable#TextView_text
4300     */
4301    @android.view.RemotableViewMethod
4302    public final void setText(CharSequence text) {
4303        setText(text, mBufferType);
4304    }
4305
4306    /**
4307     * Like {@link #setText(CharSequence)},
4308     * except that the cursor position (if any) is retained in the new text.
4309     *
4310     * @param text The new text to place in the text view.
4311     *
4312     * @see #setText(CharSequence)
4313     */
4314    @android.view.RemotableViewMethod
4315    public final void setTextKeepState(CharSequence text) {
4316        setTextKeepState(text, mBufferType);
4317    }
4318
4319    /**
4320     * Sets the text that this TextView is to display (see
4321     * {@link #setText(CharSequence)}) and also sets whether it is stored
4322     * in a styleable/spannable buffer and whether it is editable.
4323     *
4324     * @attr ref android.R.styleable#TextView_text
4325     * @attr ref android.R.styleable#TextView_bufferType
4326     */
4327    public void setText(CharSequence text, BufferType type) {
4328        setText(text, type, true, 0);
4329
4330        if (mCharWrapper != null) {
4331            mCharWrapper.mChars = null;
4332        }
4333    }
4334
4335    private void setText(CharSequence text, BufferType type,
4336                         boolean notifyBefore, int oldlen) {
4337        if (text == null) {
4338            text = "";
4339        }
4340
4341        // If suggestions are not enabled, remove the suggestion spans from the text
4342        if (!isSuggestionsEnabled()) {
4343            text = removeSuggestionSpans(text);
4344        }
4345
4346        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
4347
4348        if (text instanceof Spanned &&
4349            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
4350            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
4351                setHorizontalFadingEdgeEnabled(true);
4352                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
4353            } else {
4354                setHorizontalFadingEdgeEnabled(false);
4355                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
4356            }
4357            setEllipsize(TextUtils.TruncateAt.MARQUEE);
4358        }
4359
4360        int n = mFilters.length;
4361        for (int i = 0; i < n; i++) {
4362            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
4363            if (out != null) {
4364                text = out;
4365            }
4366        }
4367
4368        if (notifyBefore) {
4369            if (mText != null) {
4370                oldlen = mText.length();
4371                sendBeforeTextChanged(mText, 0, oldlen, text.length());
4372            } else {
4373                sendBeforeTextChanged("", 0, 0, text.length());
4374            }
4375        }
4376
4377        boolean needEditableForNotification = false;
4378
4379        if (mListeners != null && mListeners.size() != 0) {
4380            needEditableForNotification = true;
4381        }
4382
4383        if (type == BufferType.EDITABLE || getKeyListener() != null ||
4384                needEditableForNotification) {
4385            createEditorIfNeeded();
4386            mEditor.forgetUndoRedo();
4387            Editable t = mEditableFactory.newEditable(text);
4388            text = t;
4389            setFilters(t, mFilters);
4390            InputMethodManager imm = InputMethodManager.peekInstance();
4391            if (imm != null) imm.restartInput(this);
4392        } else if (type == BufferType.SPANNABLE || mMovement != null) {
4393            text = mSpannableFactory.newSpannable(text);
4394        } else if (!(text instanceof CharWrapper)) {
4395            text = TextUtils.stringOrSpannedString(text);
4396        }
4397
4398        if (mAutoLinkMask != 0) {
4399            Spannable s2;
4400
4401            if (type == BufferType.EDITABLE || text instanceof Spannable) {
4402                s2 = (Spannable) text;
4403            } else {
4404                s2 = mSpannableFactory.newSpannable(text);
4405            }
4406
4407            if (Linkify.addLinks(s2, mAutoLinkMask)) {
4408                text = s2;
4409                type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
4410
4411                /*
4412                 * We must go ahead and set the text before changing the
4413                 * movement method, because setMovementMethod() may call
4414                 * setText() again to try to upgrade the buffer type.
4415                 */
4416                mText = text;
4417
4418                // Do not change the movement method for text that support text selection as it
4419                // would prevent an arbitrary cursor displacement.
4420                if (mLinksClickable && !textCanBeSelected()) {
4421                    setMovementMethod(LinkMovementMethod.getInstance());
4422                }
4423            }
4424        }
4425
4426        mBufferType = type;
4427        mText = text;
4428
4429        if (mTransformation == null) {
4430            mTransformed = text;
4431        } else {
4432            mTransformed = mTransformation.getTransformation(text, this);
4433        }
4434
4435        final int textLength = text.length();
4436
4437        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
4438            Spannable sp = (Spannable) text;
4439
4440            // Remove any ChangeWatchers that might have come from other TextViews.
4441            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
4442            final int count = watchers.length;
4443            for (int i = 0; i < count; i++) {
4444                sp.removeSpan(watchers[i]);
4445            }
4446
4447            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
4448
4449            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
4450                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
4451
4452            if (mEditor != null) mEditor.addSpanWatchers(sp);
4453
4454            if (mTransformation != null) {
4455                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
4456            }
4457
4458            if (mMovement != null) {
4459                mMovement.initialize(this, (Spannable) text);
4460
4461                /*
4462                 * Initializing the movement method will have set the
4463                 * selection, so reset mSelectionMoved to keep that from
4464                 * interfering with the normal on-focus selection-setting.
4465                 */
4466                if (mEditor != null) mEditor.mSelectionMoved = false;
4467            }
4468        }
4469
4470        if (mLayout != null) {
4471            checkForRelayout();
4472        }
4473
4474        sendOnTextChanged(text, 0, oldlen, textLength);
4475        onTextChanged(text, 0, oldlen, textLength);
4476
4477        notifyViewAccessibilityStateChangedIfNeeded(AccessibilityEvent.CONTENT_CHANGE_TYPE_TEXT);
4478
4479        if (needEditableForNotification) {
4480            sendAfterTextChanged((Editable) text);
4481        }
4482
4483        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
4484        if (mEditor != null) mEditor.prepareCursorControllers();
4485    }
4486
4487    /**
4488     * Sets the TextView to display the specified slice of the specified
4489     * char array.  You must promise that you will not change the contents
4490     * of the array except for right before another call to setText(),
4491     * since the TextView has no way to know that the text
4492     * has changed and that it needs to invalidate and re-layout.
4493     */
4494    public final void setText(char[] text, int start, int len) {
4495        int oldlen = 0;
4496
4497        if (start < 0 || len < 0 || start + len > text.length) {
4498            throw new IndexOutOfBoundsException(start + ", " + len);
4499        }
4500
4501        /*
4502         * We must do the before-notification here ourselves because if
4503         * the old text is a CharWrapper we destroy it before calling
4504         * into the normal path.
4505         */
4506        if (mText != null) {
4507            oldlen = mText.length();
4508            sendBeforeTextChanged(mText, 0, oldlen, len);
4509        } else {
4510            sendBeforeTextChanged("", 0, 0, len);
4511        }
4512
4513        if (mCharWrapper == null) {
4514            mCharWrapper = new CharWrapper(text, start, len);
4515        } else {
4516            mCharWrapper.set(text, start, len);
4517        }
4518
4519        setText(mCharWrapper, mBufferType, false, oldlen);
4520    }
4521
4522    /**
4523     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
4524     * except that the cursor position (if any) is retained in the new text.
4525     *
4526     * @see #setText(CharSequence, android.widget.TextView.BufferType)
4527     */
4528    public final void setTextKeepState(CharSequence text, BufferType type) {
4529        int start = getSelectionStart();
4530        int end = getSelectionEnd();
4531        int len = text.length();
4532
4533        setText(text, type);
4534
4535        if (start >= 0 || end >= 0) {
4536            if (mText instanceof Spannable) {
4537                Selection.setSelection((Spannable) mText,
4538                                       Math.max(0, Math.min(start, len)),
4539                                       Math.max(0, Math.min(end, len)));
4540            }
4541        }
4542    }
4543
4544    @android.view.RemotableViewMethod
4545    public final void setText(@StringRes int resid) {
4546        setText(getContext().getResources().getText(resid));
4547    }
4548
4549    public final void setText(@StringRes int resid, BufferType type) {
4550        setText(getContext().getResources().getText(resid), type);
4551    }
4552
4553    /**
4554     * Sets the text to be displayed when the text of the TextView is empty.
4555     * Null means to use the normal empty text. The hint does not currently
4556     * participate in determining the size of the view.
4557     *
4558     * @attr ref android.R.styleable#TextView_hint
4559     */
4560    @android.view.RemotableViewMethod
4561    public final void setHint(CharSequence hint) {
4562        mHint = TextUtils.stringOrSpannedString(hint);
4563
4564        if (mLayout != null) {
4565            checkForRelayout();
4566        }
4567
4568        if (mText.length() == 0) {
4569            invalidate();
4570        }
4571
4572        // Invalidate display list if hint is currently used
4573        if (mEditor != null && mText.length() == 0 && mHint != null) {
4574            mEditor.invalidateTextDisplayList();
4575        }
4576    }
4577
4578    /**
4579     * Sets the text to be displayed when the text of the TextView is empty,
4580     * from a resource.
4581     *
4582     * @attr ref android.R.styleable#TextView_hint
4583     */
4584    @android.view.RemotableViewMethod
4585    public final void setHint(@StringRes int resid) {
4586        setHint(getContext().getResources().getText(resid));
4587    }
4588
4589    /**
4590     * Returns the hint that is displayed when the text of the TextView
4591     * is empty.
4592     *
4593     * @attr ref android.R.styleable#TextView_hint
4594     */
4595    @ViewDebug.CapturedViewProperty
4596    public CharSequence getHint() {
4597        return mHint;
4598    }
4599
4600    boolean isSingleLine() {
4601        return mSingleLine;
4602    }
4603
4604    private static boolean isMultilineInputType(int type) {
4605        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
4606            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
4607    }
4608
4609    /**
4610     * Removes the suggestion spans.
4611     */
4612    CharSequence removeSuggestionSpans(CharSequence text) {
4613       if (text instanceof Spanned) {
4614           Spannable spannable;
4615           if (text instanceof Spannable) {
4616               spannable = (Spannable) text;
4617           } else {
4618               spannable = new SpannableString(text);
4619               text = spannable;
4620           }
4621
4622           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
4623           for (int i = 0; i < spans.length; i++) {
4624               spannable.removeSpan(spans[i]);
4625           }
4626       }
4627       return text;
4628    }
4629
4630    /**
4631     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
4632     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
4633     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
4634     * then a soft keyboard will not be displayed for this text view.
4635     *
4636     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
4637     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
4638     * type.
4639     *
4640     * @see #getInputType()
4641     * @see #setRawInputType(int)
4642     * @see android.text.InputType
4643     * @attr ref android.R.styleable#TextView_inputType
4644     */
4645    public void setInputType(int type) {
4646        final boolean wasPassword = isPasswordInputType(getInputType());
4647        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
4648        setInputType(type, false);
4649        final boolean isPassword = isPasswordInputType(type);
4650        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
4651        boolean forceUpdate = false;
4652        if (isPassword) {
4653            setTransformationMethod(PasswordTransformationMethod.getInstance());
4654            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4655        } else if (isVisiblePassword) {
4656            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4657                forceUpdate = true;
4658            }
4659            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4660        } else if (wasPassword || wasVisiblePassword) {
4661            // not in password mode, clean up typeface and transformation
4662            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
4663            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4664                forceUpdate = true;
4665            }
4666        }
4667
4668        boolean singleLine = !isMultilineInputType(type);
4669
4670        // We need to update the single line mode if it has changed or we
4671        // were previously in password mode.
4672        if (mSingleLine != singleLine || forceUpdate) {
4673            // Change single line mode, but only change the transformation if
4674            // we are not in password mode.
4675            applySingleLine(singleLine, !isPassword, true);
4676        }
4677
4678        if (!isSuggestionsEnabled()) {
4679            mText = removeSuggestionSpans(mText);
4680        }
4681
4682        InputMethodManager imm = InputMethodManager.peekInstance();
4683        if (imm != null) imm.restartInput(this);
4684    }
4685
4686    /**
4687     * It would be better to rely on the input type for everything. A password inputType should have
4688     * a password transformation. We should hence use isPasswordInputType instead of this method.
4689     *
4690     * We should:
4691     * - Call setInputType in setKeyListener instead of changing the input type directly (which
4692     * would install the correct transformation).
4693     * - Refuse the installation of a non-password transformation in setTransformation if the input
4694     * type is password.
4695     *
4696     * However, this is like this for legacy reasons and we cannot break existing apps. This method
4697     * is useful since it matches what the user can see (obfuscated text or not).
4698     *
4699     * @return true if the current transformation method is of the password type.
4700     */
4701    boolean hasPasswordTransformationMethod() {
4702        return mTransformation instanceof PasswordTransformationMethod;
4703    }
4704
4705    private static boolean isPasswordInputType(int inputType) {
4706        final int variation =
4707                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4708        return variation
4709                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
4710                || variation
4711                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
4712                || variation
4713                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
4714    }
4715
4716    private static boolean isVisiblePasswordInputType(int inputType) {
4717        final int variation =
4718                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4719        return variation
4720                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
4721    }
4722
4723    /**
4724     * Directly change the content type integer of the text view, without
4725     * modifying any other state.
4726     * @see #setInputType(int)
4727     * @see android.text.InputType
4728     * @attr ref android.R.styleable#TextView_inputType
4729     */
4730    public void setRawInputType(int type) {
4731        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
4732        createEditorIfNeeded();
4733        mEditor.mInputType = type;
4734    }
4735
4736    private void setInputType(int type, boolean direct) {
4737        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
4738        KeyListener input;
4739        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
4740            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
4741            TextKeyListener.Capitalize cap;
4742            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
4743                cap = TextKeyListener.Capitalize.CHARACTERS;
4744            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
4745                cap = TextKeyListener.Capitalize.WORDS;
4746            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
4747                cap = TextKeyListener.Capitalize.SENTENCES;
4748            } else {
4749                cap = TextKeyListener.Capitalize.NONE;
4750            }
4751            input = TextKeyListener.getInstance(autotext, cap);
4752        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
4753            input = DigitsKeyListener.getInstance(
4754                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
4755                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
4756        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
4757            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
4758                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
4759                    input = DateKeyListener.getInstance();
4760                    break;
4761                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
4762                    input = TimeKeyListener.getInstance();
4763                    break;
4764                default:
4765                    input = DateTimeKeyListener.getInstance();
4766                    break;
4767            }
4768        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
4769            input = DialerKeyListener.getInstance();
4770        } else {
4771            input = TextKeyListener.getInstance();
4772        }
4773        setRawInputType(type);
4774        if (direct) {
4775            createEditorIfNeeded();
4776            mEditor.mKeyListener = input;
4777        } else {
4778            setKeyListenerOnly(input);
4779        }
4780    }
4781
4782    /**
4783     * Get the type of the editable content.
4784     *
4785     * @see #setInputType(int)
4786     * @see android.text.InputType
4787     */
4788    public int getInputType() {
4789        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
4790    }
4791
4792    /**
4793     * Change the editor type integer associated with the text view, which
4794     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
4795     * has focus.
4796     * @see #getImeOptions
4797     * @see android.view.inputmethod.EditorInfo
4798     * @attr ref android.R.styleable#TextView_imeOptions
4799     */
4800    public void setImeOptions(int imeOptions) {
4801        createEditorIfNeeded();
4802        mEditor.createInputContentTypeIfNeeded();
4803        mEditor.mInputContentType.imeOptions = imeOptions;
4804    }
4805
4806    /**
4807     * Get the type of the IME editor.
4808     *
4809     * @see #setImeOptions(int)
4810     * @see android.view.inputmethod.EditorInfo
4811     */
4812    public int getImeOptions() {
4813        return mEditor != null && mEditor.mInputContentType != null
4814                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
4815    }
4816
4817    /**
4818     * Change the custom IME action associated with the text view, which
4819     * will be reported to an IME with {@link EditorInfo#actionLabel}
4820     * and {@link EditorInfo#actionId} when it has focus.
4821     * @see #getImeActionLabel
4822     * @see #getImeActionId
4823     * @see android.view.inputmethod.EditorInfo
4824     * @attr ref android.R.styleable#TextView_imeActionLabel
4825     * @attr ref android.R.styleable#TextView_imeActionId
4826     */
4827    public void setImeActionLabel(CharSequence label, int actionId) {
4828        createEditorIfNeeded();
4829        mEditor.createInputContentTypeIfNeeded();
4830        mEditor.mInputContentType.imeActionLabel = label;
4831        mEditor.mInputContentType.imeActionId = actionId;
4832    }
4833
4834    /**
4835     * Get the IME action label previous set with {@link #setImeActionLabel}.
4836     *
4837     * @see #setImeActionLabel
4838     * @see android.view.inputmethod.EditorInfo
4839     */
4840    public CharSequence getImeActionLabel() {
4841        return mEditor != null && mEditor.mInputContentType != null
4842                ? mEditor.mInputContentType.imeActionLabel : null;
4843    }
4844
4845    /**
4846     * Get the IME action ID previous set with {@link #setImeActionLabel}.
4847     *
4848     * @see #setImeActionLabel
4849     * @see android.view.inputmethod.EditorInfo
4850     */
4851    public int getImeActionId() {
4852        return mEditor != null && mEditor.mInputContentType != null
4853                ? mEditor.mInputContentType.imeActionId : 0;
4854    }
4855
4856    /**
4857     * Set a special listener to be called when an action is performed
4858     * on the text view.  This will be called when the enter key is pressed,
4859     * or when an action supplied to the IME is selected by the user.  Setting
4860     * this means that the normal hard key event will not insert a newline
4861     * into the text view, even if it is multi-line; holding down the ALT
4862     * modifier will, however, allow the user to insert a newline character.
4863     */
4864    public void setOnEditorActionListener(OnEditorActionListener l) {
4865        createEditorIfNeeded();
4866        mEditor.createInputContentTypeIfNeeded();
4867        mEditor.mInputContentType.onEditorActionListener = l;
4868    }
4869
4870    /**
4871     * Called when an attached input method calls
4872     * {@link InputConnection#performEditorAction(int)
4873     * InputConnection.performEditorAction()}
4874     * for this text view.  The default implementation will call your action
4875     * listener supplied to {@link #setOnEditorActionListener}, or perform
4876     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
4877     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
4878     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
4879     * EditorInfo.IME_ACTION_DONE}.
4880     *
4881     * <p>For backwards compatibility, if no IME options have been set and the
4882     * text view would not normally advance focus on enter, then
4883     * the NEXT and DONE actions received here will be turned into an enter
4884     * key down/up pair to go through the normal key handling.
4885     *
4886     * @param actionCode The code of the action being performed.
4887     *
4888     * @see #setOnEditorActionListener
4889     */
4890    public void onEditorAction(int actionCode) {
4891        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
4892        if (ict != null) {
4893            if (ict.onEditorActionListener != null) {
4894                if (ict.onEditorActionListener.onEditorAction(this,
4895                        actionCode, null)) {
4896                    return;
4897                }
4898            }
4899
4900            // This is the handling for some default action.
4901            // Note that for backwards compatibility we don't do this
4902            // default handling if explicit ime options have not been given,
4903            // instead turning this into the normal enter key codes that an
4904            // app may be expecting.
4905            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
4906                View v = focusSearch(FOCUS_FORWARD);
4907                if (v != null) {
4908                    if (!v.requestFocus(FOCUS_FORWARD)) {
4909                        throw new IllegalStateException("focus search returned a view " +
4910                                "that wasn't able to take focus!");
4911                    }
4912                }
4913                return;
4914
4915            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4916                View v = focusSearch(FOCUS_BACKWARD);
4917                if (v != null) {
4918                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4919                        throw new IllegalStateException("focus search returned a view " +
4920                                "that wasn't able to take focus!");
4921                    }
4922                }
4923                return;
4924
4925            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4926                InputMethodManager imm = InputMethodManager.peekInstance();
4927                if (imm != null && imm.isActive(this)) {
4928                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4929                }
4930                return;
4931            }
4932        }
4933
4934        ViewRootImpl viewRootImpl = getViewRootImpl();
4935        if (viewRootImpl != null) {
4936            long eventTime = SystemClock.uptimeMillis();
4937            viewRootImpl.dispatchKeyFromIme(
4938                    new KeyEvent(eventTime, eventTime,
4939                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4940                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4941                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4942                    | KeyEvent.FLAG_EDITOR_ACTION));
4943            viewRootImpl.dispatchKeyFromIme(
4944                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4945                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4946                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4947                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4948                    | KeyEvent.FLAG_EDITOR_ACTION));
4949        }
4950    }
4951
4952    /**
4953     * Set the private content type of the text, which is the
4954     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4955     * field that will be filled in when creating an input connection.
4956     *
4957     * @see #getPrivateImeOptions()
4958     * @see EditorInfo#privateImeOptions
4959     * @attr ref android.R.styleable#TextView_privateImeOptions
4960     */
4961    public void setPrivateImeOptions(String type) {
4962        createEditorIfNeeded();
4963        mEditor.createInputContentTypeIfNeeded();
4964        mEditor.mInputContentType.privateImeOptions = type;
4965    }
4966
4967    /**
4968     * Get the private type of the content.
4969     *
4970     * @see #setPrivateImeOptions(String)
4971     * @see EditorInfo#privateImeOptions
4972     */
4973    public String getPrivateImeOptions() {
4974        return mEditor != null && mEditor.mInputContentType != null
4975                ? mEditor.mInputContentType.privateImeOptions : null;
4976    }
4977
4978    /**
4979     * Set the extra input data of the text, which is the
4980     * {@link EditorInfo#extras TextBoxAttribute.extras}
4981     * Bundle that will be filled in when creating an input connection.  The
4982     * given integer is the resource ID of an XML resource holding an
4983     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4984     *
4985     * @see #getInputExtras(boolean)
4986     * @see EditorInfo#extras
4987     * @attr ref android.R.styleable#TextView_editorExtras
4988     */
4989    public void setInputExtras(@XmlRes int xmlResId) throws XmlPullParserException, IOException {
4990        createEditorIfNeeded();
4991        XmlResourceParser parser = getResources().getXml(xmlResId);
4992        mEditor.createInputContentTypeIfNeeded();
4993        mEditor.mInputContentType.extras = new Bundle();
4994        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4995    }
4996
4997    /**
4998     * Retrieve the input extras currently associated with the text view, which
4999     * can be viewed as well as modified.
5000     *
5001     * @param create If true, the extras will be created if they don't already
5002     * exist.  Otherwise, null will be returned if none have been created.
5003     * @see #setInputExtras(int)
5004     * @see EditorInfo#extras
5005     * @attr ref android.R.styleable#TextView_editorExtras
5006     */
5007    public Bundle getInputExtras(boolean create) {
5008        if (mEditor == null && !create) return null;
5009        createEditorIfNeeded();
5010        if (mEditor.mInputContentType == null) {
5011            if (!create) return null;
5012            mEditor.createInputContentTypeIfNeeded();
5013        }
5014        if (mEditor.mInputContentType.extras == null) {
5015            if (!create) return null;
5016            mEditor.mInputContentType.extras = new Bundle();
5017        }
5018        return mEditor.mInputContentType.extras;
5019    }
5020
5021    /**
5022     * Change "hint" locales associated with the text view, which will be reported to an IME with
5023     * {@link EditorInfo#hintLocales} when it has focus.
5024     *
5025     * <p><strong>Note:</strong> If you want new "hint" to take effect immediately you need to
5026     * call {@link InputMethodManager#restartInput(View)}.</p>
5027     * @param hintLocales List of the languages that the user is supposed to switch to no matter
5028     * what input method subtype is currently used. Set {@code null} to clear the current "hint".
5029     * @see #getImeHIntLocales()
5030     * @see android.view.inputmethod.EditorInfo#hintLocales
5031     */
5032    public void setImeHintLocales(@Nullable LocaleList hintLocales) {
5033        createEditorIfNeeded();
5034        mEditor.createInputContentTypeIfNeeded();
5035        mEditor.mInputContentType.imeHintLocales = hintLocales;
5036    }
5037
5038    /**
5039     * @return The current languages list "hint". {@code null} when no "hint" is available.
5040     * @see #setImeHintLocales(LocaleList)
5041     * @see android.view.inputmethod.EditorInfo#hintLocales
5042     */
5043    @Nullable
5044    public LocaleList getImeHintLocales() {
5045        if (mEditor == null) { return null; }
5046        if (mEditor.mInputContentType == null) { return null; }
5047        return mEditor.mInputContentType.imeHintLocales;
5048    }
5049
5050    /**
5051     * Returns the error message that was set to be displayed with
5052     * {@link #setError}, or <code>null</code> if no error was set
5053     * or if it the error was cleared by the widget after user input.
5054     */
5055    public CharSequence getError() {
5056        return mEditor == null ? null : mEditor.mError;
5057    }
5058
5059    /**
5060     * Sets the right-hand compound drawable of the TextView to the "error"
5061     * icon and sets an error message that will be displayed in a popup when
5062     * the TextView has focus.  The icon and error message will be reset to
5063     * null when any key events cause changes to the TextView's text.  If the
5064     * <code>error</code> is <code>null</code>, the error message and icon
5065     * will be cleared.
5066     */
5067    @android.view.RemotableViewMethod
5068    public void setError(CharSequence error) {
5069        if (error == null) {
5070            setError(null, null);
5071        } else {
5072            Drawable dr = getContext().getDrawable(
5073                    com.android.internal.R.drawable.indicator_input_error);
5074
5075            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
5076            setError(error, dr);
5077        }
5078    }
5079
5080    /**
5081     * Sets the right-hand compound drawable of the TextView to the specified
5082     * icon and sets an error message that will be displayed in a popup when
5083     * the TextView has focus.  The icon and error message will be reset to
5084     * null when any key events cause changes to the TextView's text.  The
5085     * drawable must already have had {@link Drawable#setBounds} set on it.
5086     * If the <code>error</code> is <code>null</code>, the error message will
5087     * be cleared (and you should provide a <code>null</code> icon as well).
5088     */
5089    public void setError(CharSequence error, Drawable icon) {
5090        createEditorIfNeeded();
5091        mEditor.setError(error, icon);
5092        notifyViewAccessibilityStateChangedIfNeeded(
5093                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
5094    }
5095
5096    @Override
5097    protected boolean setFrame(int l, int t, int r, int b) {
5098        boolean result = super.setFrame(l, t, r, b);
5099
5100        if (mEditor != null) mEditor.setFrame();
5101
5102        restartMarqueeIfNeeded();
5103
5104        return result;
5105    }
5106
5107    private void restartMarqueeIfNeeded() {
5108        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5109            mRestartMarquee = false;
5110            startMarquee();
5111        }
5112    }
5113
5114    /**
5115     * Sets the list of input filters that will be used if the buffer is
5116     * Editable. Has no effect otherwise.
5117     *
5118     * @attr ref android.R.styleable#TextView_maxLength
5119     */
5120    public void setFilters(InputFilter[] filters) {
5121        if (filters == null) {
5122            throw new IllegalArgumentException();
5123        }
5124
5125        mFilters = filters;
5126
5127        if (mText instanceof Editable) {
5128            setFilters((Editable) mText, filters);
5129        }
5130    }
5131
5132    /**
5133     * Sets the list of input filters on the specified Editable,
5134     * and includes mInput in the list if it is an InputFilter.
5135     */
5136    private void setFilters(Editable e, InputFilter[] filters) {
5137        if (mEditor != null) {
5138            final boolean undoFilter = mEditor.mUndoInputFilter != null;
5139            final boolean keyFilter = mEditor.mKeyListener instanceof InputFilter;
5140            int num = 0;
5141            if (undoFilter) num++;
5142            if (keyFilter) num++;
5143            if (num > 0) {
5144                InputFilter[] nf = new InputFilter[filters.length + num];
5145
5146                System.arraycopy(filters, 0, nf, 0, filters.length);
5147                num = 0;
5148                if (undoFilter) {
5149                    nf[filters.length] = mEditor.mUndoInputFilter;
5150                    num++;
5151                }
5152                if (keyFilter) {
5153                    nf[filters.length + num] = (InputFilter) mEditor.mKeyListener;
5154                }
5155
5156                e.setFilters(nf);
5157                return;
5158            }
5159        }
5160        e.setFilters(filters);
5161    }
5162
5163    /**
5164     * Returns the current list of input filters.
5165     *
5166     * @attr ref android.R.styleable#TextView_maxLength
5167     */
5168    public InputFilter[] getFilters() {
5169        return mFilters;
5170    }
5171
5172    /////////////////////////////////////////////////////////////////////////
5173
5174    private int getBoxHeight(Layout l) {
5175        Insets opticalInsets = isLayoutModeOptical(mParent) ? getOpticalInsets() : Insets.NONE;
5176        int padding = (l == mHintLayout) ?
5177                getCompoundPaddingTop() + getCompoundPaddingBottom() :
5178                getExtendedPaddingTop() + getExtendedPaddingBottom();
5179        return getMeasuredHeight() - padding + opticalInsets.top + opticalInsets.bottom;
5180    }
5181
5182    int getVerticalOffset(boolean forceNormal) {
5183        int voffset = 0;
5184        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5185
5186        Layout l = mLayout;
5187        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5188            l = mHintLayout;
5189        }
5190
5191        if (gravity != Gravity.TOP) {
5192            int boxht = getBoxHeight(l);
5193            int textht = l.getHeight();
5194
5195            if (textht < boxht) {
5196                if (gravity == Gravity.BOTTOM)
5197                    voffset = boxht - textht;
5198                else // (gravity == Gravity.CENTER_VERTICAL)
5199                    voffset = (boxht - textht) >> 1;
5200            }
5201        }
5202        return voffset;
5203    }
5204
5205    private int getBottomVerticalOffset(boolean forceNormal) {
5206        int voffset = 0;
5207        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5208
5209        Layout l = mLayout;
5210        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5211            l = mHintLayout;
5212        }
5213
5214        if (gravity != Gravity.BOTTOM) {
5215            int boxht = getBoxHeight(l);
5216            int textht = l.getHeight();
5217
5218            if (textht < boxht) {
5219                if (gravity == Gravity.TOP)
5220                    voffset = boxht - textht;
5221                else // (gravity == Gravity.CENTER_VERTICAL)
5222                    voffset = (boxht - textht) >> 1;
5223            }
5224        }
5225        return voffset;
5226    }
5227
5228    void invalidateCursorPath() {
5229        if (mHighlightPathBogus) {
5230            invalidateCursor();
5231        } else {
5232            final int horizontalPadding = getCompoundPaddingLeft();
5233            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5234
5235            if (mEditor.mCursorCount == 0) {
5236                synchronized (TEMP_RECTF) {
5237                    /*
5238                     * The reason for this concern about the thickness of the
5239                     * cursor and doing the floor/ceil on the coordinates is that
5240                     * some EditTexts (notably textfields in the Browser) have
5241                     * anti-aliased text where not all the characters are
5242                     * necessarily at integer-multiple locations.  This should
5243                     * make sure the entire cursor gets invalidated instead of
5244                     * sometimes missing half a pixel.
5245                     */
5246                    float thick = (float) Math.ceil(mTextPaint.getStrokeWidth());
5247                    if (thick < 1.0f) {
5248                        thick = 1.0f;
5249                    }
5250
5251                    thick /= 2.0f;
5252
5253                    // mHighlightPath is guaranteed to be non null at that point.
5254                    mHighlightPath.computeBounds(TEMP_RECTF, false);
5255
5256                    invalidate((int) Math.floor(horizontalPadding + TEMP_RECTF.left - thick),
5257                            (int) Math.floor(verticalPadding + TEMP_RECTF.top - thick),
5258                            (int) Math.ceil(horizontalPadding + TEMP_RECTF.right + thick),
5259                            (int) Math.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
5260                }
5261            } else {
5262                for (int i = 0; i < mEditor.mCursorCount; i++) {
5263                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5264                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
5265                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
5266                }
5267            }
5268        }
5269    }
5270
5271    void invalidateCursor() {
5272        int where = getSelectionEnd();
5273
5274        invalidateCursor(where, where, where);
5275    }
5276
5277    private void invalidateCursor(int a, int b, int c) {
5278        if (a >= 0 || b >= 0 || c >= 0) {
5279            int start = Math.min(Math.min(a, b), c);
5280            int end = Math.max(Math.max(a, b), c);
5281            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
5282        }
5283    }
5284
5285    /**
5286     * Invalidates the region of text enclosed between the start and end text offsets.
5287     */
5288    void invalidateRegion(int start, int end, boolean invalidateCursor) {
5289        if (mLayout == null) {
5290            invalidate();
5291        } else {
5292                int lineStart = mLayout.getLineForOffset(start);
5293                int top = mLayout.getLineTop(lineStart);
5294
5295                // This is ridiculous, but the descent from the line above
5296                // can hang down into the line we really want to redraw,
5297                // so we have to invalidate part of the line above to make
5298                // sure everything that needs to be redrawn really is.
5299                // (But not the whole line above, because that would cause
5300                // the same problem with the descenders on the line above it!)
5301                if (lineStart > 0) {
5302                    top -= mLayout.getLineDescent(lineStart - 1);
5303                }
5304
5305                int lineEnd;
5306
5307                if (start == end)
5308                    lineEnd = lineStart;
5309                else
5310                    lineEnd = mLayout.getLineForOffset(end);
5311
5312                int bottom = mLayout.getLineBottom(lineEnd);
5313
5314                // mEditor can be null in case selection is set programmatically.
5315                if (invalidateCursor && mEditor != null) {
5316                    for (int i = 0; i < mEditor.mCursorCount; i++) {
5317                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5318                        top = Math.min(top, bounds.top);
5319                        bottom = Math.max(bottom, bounds.bottom);
5320                    }
5321                }
5322
5323                final int compoundPaddingLeft = getCompoundPaddingLeft();
5324                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5325
5326                int left, right;
5327                if (lineStart == lineEnd && !invalidateCursor) {
5328                    left = (int) mLayout.getPrimaryHorizontal(start);
5329                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
5330                    left += compoundPaddingLeft;
5331                    right += compoundPaddingLeft;
5332                } else {
5333                    // Rectangle bounding box when the region spans several lines
5334                    left = compoundPaddingLeft;
5335                    right = getWidth() - getCompoundPaddingRight();
5336                }
5337
5338                invalidate(mScrollX + left, verticalPadding + top,
5339                        mScrollX + right, verticalPadding + bottom);
5340        }
5341    }
5342
5343    private void registerForPreDraw() {
5344        if (!mPreDrawRegistered) {
5345            getViewTreeObserver().addOnPreDrawListener(this);
5346            mPreDrawRegistered = true;
5347        }
5348    }
5349
5350    private void unregisterForPreDraw() {
5351        getViewTreeObserver().removeOnPreDrawListener(this);
5352        mPreDrawRegistered = false;
5353        mPreDrawListenerDetached = false;
5354    }
5355
5356    /**
5357     * {@inheritDoc}
5358     */
5359    public boolean onPreDraw() {
5360        if (mLayout == null) {
5361            assumeLayout();
5362        }
5363
5364        if (mMovement != null) {
5365            /* This code also provides auto-scrolling when a cursor is moved using a
5366             * CursorController (insertion point or selection limits).
5367             * For selection, ensure start or end is visible depending on controller's state.
5368             */
5369            int curs = getSelectionEnd();
5370            // Do not create the controller if it is not already created.
5371            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
5372                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
5373                curs = getSelectionStart();
5374            }
5375
5376            /*
5377             * TODO: This should really only keep the end in view if
5378             * it already was before the text changed.  I'm not sure
5379             * of a good way to tell from here if it was.
5380             */
5381            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5382                curs = mText.length();
5383            }
5384
5385            if (curs >= 0) {
5386                bringPointIntoView(curs);
5387            }
5388        } else {
5389            bringTextIntoView();
5390        }
5391
5392        // This has to be checked here since:
5393        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
5394        //   a screen rotation) since layout is not yet initialized at that point.
5395        if (mEditor != null && mEditor.mCreatedWithASelection) {
5396            mEditor.refreshTextActionMode();
5397            mEditor.mCreatedWithASelection = false;
5398        }
5399
5400        unregisterForPreDraw();
5401
5402        return true;
5403    }
5404
5405    @Override
5406    protected void onAttachedToWindow() {
5407        super.onAttachedToWindow();
5408
5409        if (mEditor != null) mEditor.onAttachedToWindow();
5410
5411        if (mPreDrawListenerDetached) {
5412            getViewTreeObserver().addOnPreDrawListener(this);
5413            mPreDrawListenerDetached = false;
5414        }
5415    }
5416
5417    /** @hide */
5418    @Override
5419    protected void onDetachedFromWindowInternal() {
5420        if (mPreDrawRegistered) {
5421            getViewTreeObserver().removeOnPreDrawListener(this);
5422            mPreDrawListenerDetached = true;
5423        }
5424
5425        resetResolvedDrawables();
5426
5427        if (mEditor != null) mEditor.onDetachedFromWindow();
5428
5429        super.onDetachedFromWindowInternal();
5430    }
5431
5432    @Override
5433    public void onScreenStateChanged(int screenState) {
5434        super.onScreenStateChanged(screenState);
5435        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
5436    }
5437
5438    @Override
5439    protected boolean isPaddingOffsetRequired() {
5440        return mShadowRadius != 0 || mDrawables != null;
5441    }
5442
5443    @Override
5444    protected int getLeftPaddingOffset() {
5445        return getCompoundPaddingLeft() - mPaddingLeft +
5446                (int) Math.min(0, mShadowDx - mShadowRadius);
5447    }
5448
5449    @Override
5450    protected int getTopPaddingOffset() {
5451        return (int) Math.min(0, mShadowDy - mShadowRadius);
5452    }
5453
5454    @Override
5455    protected int getBottomPaddingOffset() {
5456        return (int) Math.max(0, mShadowDy + mShadowRadius);
5457    }
5458
5459    @Override
5460    protected int getRightPaddingOffset() {
5461        return -(getCompoundPaddingRight() - mPaddingRight) +
5462                (int) Math.max(0, mShadowDx + mShadowRadius);
5463    }
5464
5465    @Override
5466    protected boolean verifyDrawable(@NonNull Drawable who) {
5467        final boolean verified = super.verifyDrawable(who);
5468        if (!verified && mDrawables != null) {
5469            for (Drawable dr : mDrawables.mShowing) {
5470                if (who == dr) {
5471                    return true;
5472                }
5473            }
5474        }
5475        return verified;
5476    }
5477
5478    @Override
5479    public void jumpDrawablesToCurrentState() {
5480        super.jumpDrawablesToCurrentState();
5481        if (mDrawables != null) {
5482            for (Drawable dr : mDrawables.mShowing) {
5483                if (dr != null) {
5484                    dr.jumpToCurrentState();
5485                }
5486            }
5487        }
5488    }
5489
5490    @Override
5491    public void invalidateDrawable(@NonNull Drawable drawable) {
5492        boolean handled = false;
5493
5494        if (verifyDrawable(drawable)) {
5495            final Rect dirty = drawable.getBounds();
5496            int scrollX = mScrollX;
5497            int scrollY = mScrollY;
5498
5499            // IMPORTANT: The coordinates below are based on the coordinates computed
5500            // for each compound drawable in onDraw(). Make sure to update each section
5501            // accordingly.
5502            final TextView.Drawables drawables = mDrawables;
5503            if (drawables != null) {
5504                if (drawable == drawables.mShowing[Drawables.LEFT]) {
5505                    final int compoundPaddingTop = getCompoundPaddingTop();
5506                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5507                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5508
5509                    scrollX += mPaddingLeft;
5510                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
5511                    handled = true;
5512                } else if (drawable == drawables.mShowing[Drawables.RIGHT]) {
5513                    final int compoundPaddingTop = getCompoundPaddingTop();
5514                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5515                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5516
5517                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
5518                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
5519                    handled = true;
5520                } else if (drawable == drawables.mShowing[Drawables.TOP]) {
5521                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5522                    final int compoundPaddingRight = getCompoundPaddingRight();
5523                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5524
5525                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
5526                    scrollY += mPaddingTop;
5527                    handled = true;
5528                } else if (drawable == drawables.mShowing[Drawables.BOTTOM]) {
5529                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5530                    final int compoundPaddingRight = getCompoundPaddingRight();
5531                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5532
5533                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
5534                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
5535                    handled = true;
5536                }
5537            }
5538
5539            if (handled) {
5540                invalidate(dirty.left + scrollX, dirty.top + scrollY,
5541                        dirty.right + scrollX, dirty.bottom + scrollY);
5542            }
5543        }
5544
5545        if (!handled) {
5546            super.invalidateDrawable(drawable);
5547        }
5548    }
5549
5550    @Override
5551    public boolean hasOverlappingRendering() {
5552        // horizontal fading edge causes SaveLayerAlpha, which doesn't support alpha modulation
5553        return ((getBackground() != null && getBackground().getCurrent() != null)
5554                || mText instanceof Spannable || hasSelection()
5555                || isHorizontalFadingEdgeEnabled());
5556    }
5557
5558    /**
5559     *
5560     * Returns the state of the {@code textIsSelectable} flag (See
5561     * {@link #setTextIsSelectable setTextIsSelectable()}). Although you have to set this flag
5562     * to allow users to select and copy text in a non-editable TextView, the content of an
5563     * {@link EditText} can always be selected, independently of the value of this flag.
5564     * <p>
5565     *
5566     * @return True if the text displayed in this TextView can be selected by the user.
5567     *
5568     * @attr ref android.R.styleable#TextView_textIsSelectable
5569     */
5570    public boolean isTextSelectable() {
5571        return mEditor == null ? false : mEditor.mTextIsSelectable;
5572    }
5573
5574    /**
5575     * Sets whether the content of this view is selectable by the user. The default is
5576     * {@code false}, meaning that the content is not selectable.
5577     * <p>
5578     * When you use a TextView to display a useful piece of information to the user (such as a
5579     * contact's address), make it selectable, so that the user can select and copy its
5580     * content. You can also use set the XML attribute
5581     * {@link android.R.styleable#TextView_textIsSelectable} to "true".
5582     * <p>
5583     * When you call this method to set the value of {@code textIsSelectable}, it sets
5584     * the flags {@code focusable}, {@code focusableInTouchMode}, {@code clickable},
5585     * and {@code longClickable} to the same value. These flags correspond to the attributes
5586     * {@link android.R.styleable#View_focusable android:focusable},
5587     * {@link android.R.styleable#View_focusableInTouchMode android:focusableInTouchMode},
5588     * {@link android.R.styleable#View_clickable android:clickable}, and
5589     * {@link android.R.styleable#View_longClickable android:longClickable}. To restore any of these
5590     * flags to a state you had set previously, call one or more of the following methods:
5591     * {@link #setFocusable(boolean) setFocusable()},
5592     * {@link #setFocusableInTouchMode(boolean) setFocusableInTouchMode()},
5593     * {@link #setClickable(boolean) setClickable()} or
5594     * {@link #setLongClickable(boolean) setLongClickable()}.
5595     *
5596     * @param selectable Whether the content of this TextView should be selectable.
5597     */
5598    public void setTextIsSelectable(boolean selectable) {
5599        if (!selectable && mEditor == null) return; // false is default value with no edit data
5600
5601        createEditorIfNeeded();
5602        if (mEditor.mTextIsSelectable == selectable) return;
5603
5604        mEditor.mTextIsSelectable = selectable;
5605        setFocusableInTouchMode(selectable);
5606        setFocusable(selectable);
5607        setClickable(selectable);
5608        setLongClickable(selectable);
5609
5610        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
5611
5612        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
5613        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
5614
5615        // Called by setText above, but safer in case of future code changes
5616        mEditor.prepareCursorControllers();
5617    }
5618
5619    @Override
5620    protected int[] onCreateDrawableState(int extraSpace) {
5621        final int[] drawableState;
5622
5623        if (mSingleLine) {
5624            drawableState = super.onCreateDrawableState(extraSpace);
5625        } else {
5626            drawableState = super.onCreateDrawableState(extraSpace + 1);
5627            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
5628        }
5629
5630        if (isTextSelectable()) {
5631            // Disable pressed state, which was introduced when TextView was made clickable.
5632            // Prevents text color change.
5633            // setClickable(false) would have a similar effect, but it also disables focus changes
5634            // and long press actions, which are both needed by text selection.
5635            final int length = drawableState.length;
5636            for (int i = 0; i < length; i++) {
5637                if (drawableState[i] == R.attr.state_pressed) {
5638                    final int[] nonPressedState = new int[length - 1];
5639                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
5640                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
5641                    return nonPressedState;
5642                }
5643            }
5644        }
5645
5646        return drawableState;
5647    }
5648
5649    private Path getUpdatedHighlightPath() {
5650        Path highlight = null;
5651        Paint highlightPaint = mHighlightPaint;
5652
5653        final int selStart = getSelectionStart();
5654        final int selEnd = getSelectionEnd();
5655        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
5656            if (selStart == selEnd) {
5657                if (mEditor != null && mEditor.isCursorVisible() &&
5658                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
5659                        (2 * Editor.BLINK) < Editor.BLINK) {
5660                    if (mHighlightPathBogus) {
5661                        if (mHighlightPath == null) mHighlightPath = new Path();
5662                        mHighlightPath.reset();
5663                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
5664                        mEditor.updateCursorsPositions();
5665                        mHighlightPathBogus = false;
5666                    }
5667
5668                    // XXX should pass to skin instead of drawing directly
5669                    highlightPaint.setColor(mCurTextColor);
5670                    highlightPaint.setStyle(Paint.Style.STROKE);
5671                    highlight = mHighlightPath;
5672                }
5673            } else {
5674                if (mHighlightPathBogus) {
5675                    if (mHighlightPath == null) mHighlightPath = new Path();
5676                    mHighlightPath.reset();
5677                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5678                    mHighlightPathBogus = false;
5679                }
5680
5681                // XXX should pass to skin instead of drawing directly
5682                highlightPaint.setColor(mHighlightColor);
5683                highlightPaint.setStyle(Paint.Style.FILL);
5684
5685                highlight = mHighlightPath;
5686            }
5687        }
5688        return highlight;
5689    }
5690
5691    /**
5692     * @hide
5693     */
5694    public int getHorizontalOffsetForDrawables() {
5695        return 0;
5696    }
5697
5698    @Override
5699    protected void onDraw(Canvas canvas) {
5700        restartMarqueeIfNeeded();
5701
5702        // Draw the background for this view
5703        super.onDraw(canvas);
5704
5705        final int compoundPaddingLeft = getCompoundPaddingLeft();
5706        final int compoundPaddingTop = getCompoundPaddingTop();
5707        final int compoundPaddingRight = getCompoundPaddingRight();
5708        final int compoundPaddingBottom = getCompoundPaddingBottom();
5709        final int scrollX = mScrollX;
5710        final int scrollY = mScrollY;
5711        final int right = mRight;
5712        final int left = mLeft;
5713        final int bottom = mBottom;
5714        final int top = mTop;
5715        final boolean isLayoutRtl = isLayoutRtl();
5716        final int offset = getHorizontalOffsetForDrawables();
5717        final int leftOffset = isLayoutRtl ? 0 : offset;
5718        final int rightOffset = isLayoutRtl ? offset : 0 ;
5719
5720        final Drawables dr = mDrawables;
5721        if (dr != null) {
5722            /*
5723             * Compound, not extended, because the icon is not clipped
5724             * if the text height is smaller.
5725             */
5726
5727            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
5728            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
5729
5730            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5731            // Make sure to update invalidateDrawable() when changing this code.
5732            if (dr.mShowing[Drawables.LEFT] != null) {
5733                canvas.save();
5734                canvas.translate(scrollX + mPaddingLeft + leftOffset,
5735                                 scrollY + compoundPaddingTop +
5736                                 (vspace - dr.mDrawableHeightLeft) / 2);
5737                dr.mShowing[Drawables.LEFT].draw(canvas);
5738                canvas.restore();
5739            }
5740
5741            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5742            // Make sure to update invalidateDrawable() when changing this code.
5743            if (dr.mShowing[Drawables.RIGHT] != null) {
5744                canvas.save();
5745                canvas.translate(scrollX + right - left - mPaddingRight
5746                        - dr.mDrawableSizeRight - rightOffset,
5747                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
5748                dr.mShowing[Drawables.RIGHT].draw(canvas);
5749                canvas.restore();
5750            }
5751
5752            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5753            // Make sure to update invalidateDrawable() when changing this code.
5754            if (dr.mShowing[Drawables.TOP] != null) {
5755                canvas.save();
5756                canvas.translate(scrollX + compoundPaddingLeft +
5757                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
5758                dr.mShowing[Drawables.TOP].draw(canvas);
5759                canvas.restore();
5760            }
5761
5762            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5763            // Make sure to update invalidateDrawable() when changing this code.
5764            if (dr.mShowing[Drawables.BOTTOM] != null) {
5765                canvas.save();
5766                canvas.translate(scrollX + compoundPaddingLeft +
5767                        (hspace - dr.mDrawableWidthBottom) / 2,
5768                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
5769                dr.mShowing[Drawables.BOTTOM].draw(canvas);
5770                canvas.restore();
5771            }
5772        }
5773
5774        int color = mCurTextColor;
5775
5776        if (mLayout == null) {
5777            assumeLayout();
5778        }
5779
5780        Layout layout = mLayout;
5781
5782        if (mHint != null && mText.length() == 0) {
5783            if (mHintTextColor != null) {
5784                color = mCurHintTextColor;
5785            }
5786
5787            layout = mHintLayout;
5788        }
5789
5790        mTextPaint.setColor(color);
5791        mTextPaint.drawableState = getDrawableState();
5792
5793        canvas.save();
5794        /*  Would be faster if we didn't have to do this. Can we chop the
5795            (displayable) text so that we don't need to do this ever?
5796        */
5797
5798        int extendedPaddingTop = getExtendedPaddingTop();
5799        int extendedPaddingBottom = getExtendedPaddingBottom();
5800
5801        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5802        final int maxScrollY = mLayout.getHeight() - vspace;
5803
5804        float clipLeft = compoundPaddingLeft + scrollX;
5805        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
5806        float clipRight = right - left - getCompoundPaddingRight() + scrollX;
5807        float clipBottom = bottom - top + scrollY -
5808                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
5809
5810        if (mShadowRadius != 0) {
5811            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
5812            clipRight += Math.max(0, mShadowDx + mShadowRadius);
5813
5814            clipTop += Math.min(0, mShadowDy - mShadowRadius);
5815            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
5816        }
5817
5818        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
5819
5820        int voffsetText = 0;
5821        int voffsetCursor = 0;
5822
5823        // translate in by our padding
5824        /* shortcircuit calling getVerticaOffset() */
5825        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5826            voffsetText = getVerticalOffset(false);
5827            voffsetCursor = getVerticalOffset(true);
5828        }
5829        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
5830
5831        final int layoutDirection = getLayoutDirection();
5832        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
5833        if (isMarqueeFadeEnabled()) {
5834            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
5835                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
5836                final int width = mRight - mLeft;
5837                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
5838                final float dx = mLayout.getLineRight(0) - (width - padding);
5839                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5840            }
5841
5842            if (mMarquee != null && mMarquee.isRunning()) {
5843                final float dx = -mMarquee.getScroll();
5844                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5845            }
5846        }
5847
5848        final int cursorOffsetVertical = voffsetCursor - voffsetText;
5849
5850        Path highlight = getUpdatedHighlightPath();
5851        if (mEditor != null) {
5852            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
5853        } else {
5854            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5855        }
5856
5857        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
5858            final float dx = mMarquee.getGhostOffset();
5859            canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5860            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5861        }
5862
5863        canvas.restore();
5864    }
5865
5866    @Override
5867    public void getFocusedRect(Rect r) {
5868        if (mLayout == null) {
5869            super.getFocusedRect(r);
5870            return;
5871        }
5872
5873        int selEnd = getSelectionEnd();
5874        if (selEnd < 0) {
5875            super.getFocusedRect(r);
5876            return;
5877        }
5878
5879        int selStart = getSelectionStart();
5880        if (selStart < 0 || selStart >= selEnd) {
5881            int line = mLayout.getLineForOffset(selEnd);
5882            r.top = mLayout.getLineTop(line);
5883            r.bottom = mLayout.getLineBottom(line);
5884            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
5885            r.right = r.left + 4;
5886        } else {
5887            int lineStart = mLayout.getLineForOffset(selStart);
5888            int lineEnd = mLayout.getLineForOffset(selEnd);
5889            r.top = mLayout.getLineTop(lineStart);
5890            r.bottom = mLayout.getLineBottom(lineEnd);
5891            if (lineStart == lineEnd) {
5892                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
5893                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
5894            } else {
5895                // Selection extends across multiple lines -- make the focused
5896                // rect cover the entire width.
5897                if (mHighlightPathBogus) {
5898                    if (mHighlightPath == null) mHighlightPath = new Path();
5899                    mHighlightPath.reset();
5900                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5901                    mHighlightPathBogus = false;
5902                }
5903                synchronized (TEMP_RECTF) {
5904                    mHighlightPath.computeBounds(TEMP_RECTF, true);
5905                    r.left = (int)TEMP_RECTF.left-1;
5906                    r.right = (int)TEMP_RECTF.right+1;
5907                }
5908            }
5909        }
5910
5911        // Adjust for padding and gravity.
5912        int paddingLeft = getCompoundPaddingLeft();
5913        int paddingTop = getExtendedPaddingTop();
5914        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5915            paddingTop += getVerticalOffset(false);
5916        }
5917        r.offset(paddingLeft, paddingTop);
5918        int paddingBottom = getExtendedPaddingBottom();
5919        r.bottom += paddingBottom;
5920    }
5921
5922    /**
5923     * Return the number of lines of text, or 0 if the internal Layout has not
5924     * been built.
5925     */
5926    public int getLineCount() {
5927        return mLayout != null ? mLayout.getLineCount() : 0;
5928    }
5929
5930    /**
5931     * Return the baseline for the specified line (0...getLineCount() - 1)
5932     * If bounds is not null, return the top, left, right, bottom extents
5933     * of the specified line in it. If the internal Layout has not been built,
5934     * return 0 and set bounds to (0, 0, 0, 0)
5935     * @param line which line to examine (0..getLineCount() - 1)
5936     * @param bounds Optional. If not null, it returns the extent of the line
5937     * @return the Y-coordinate of the baseline
5938     */
5939    public int getLineBounds(int line, Rect bounds) {
5940        if (mLayout == null) {
5941            if (bounds != null) {
5942                bounds.set(0, 0, 0, 0);
5943            }
5944            return 0;
5945        }
5946        else {
5947            int baseline = mLayout.getLineBounds(line, bounds);
5948
5949            int voffset = getExtendedPaddingTop();
5950            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5951                voffset += getVerticalOffset(true);
5952            }
5953            if (bounds != null) {
5954                bounds.offset(getCompoundPaddingLeft(), voffset);
5955            }
5956            return baseline + voffset;
5957        }
5958    }
5959
5960    @Override
5961    public int getBaseline() {
5962        if (mLayout == null) {
5963            return super.getBaseline();
5964        }
5965
5966        return getBaselineOffset() + mLayout.getLineBaseline(0);
5967    }
5968
5969    int getBaselineOffset() {
5970        int voffset = 0;
5971        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5972            voffset = getVerticalOffset(true);
5973        }
5974
5975        if (isLayoutModeOptical(mParent)) {
5976            voffset -= getOpticalInsets().top;
5977        }
5978
5979        return getExtendedPaddingTop() + voffset;
5980    }
5981
5982    /**
5983     * @hide
5984     */
5985    @Override
5986    protected int getFadeTop(boolean offsetRequired) {
5987        if (mLayout == null) return 0;
5988
5989        int voffset = 0;
5990        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5991            voffset = getVerticalOffset(true);
5992        }
5993
5994        if (offsetRequired) voffset += getTopPaddingOffset();
5995
5996        return getExtendedPaddingTop() + voffset;
5997    }
5998
5999    /**
6000     * @hide
6001     */
6002    @Override
6003    protected int getFadeHeight(boolean offsetRequired) {
6004        return mLayout != null ? mLayout.getHeight() : 0;
6005    }
6006
6007    @Override
6008    public PointerIcon getPointerIcon(MotionEvent event, float x, float y) {
6009        if (mText instanceof Spannable && mLinksClickable) {
6010            final int offset = getOffsetForPosition(x, y);
6011            final ClickableSpan[] clickables = ((Spannable) mText).getSpans(offset, offset,
6012                    ClickableSpan.class);
6013            if (clickables.length > 0) {
6014                return PointerIcon.getSystemIcon(mContext, PointerIcon.STYLE_HAND);
6015            }
6016        }
6017        if (isTextSelectable() || isTextEditable()) {
6018            return PointerIcon.getSystemIcon(mContext, PointerIcon.STYLE_TEXT);
6019        }
6020        return super.getPointerIcon(event, x, y);
6021    }
6022
6023    @Override
6024    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
6025        // Note: If the IME is in fullscreen mode and IMS#mExtractEditText is in text action mode,
6026        // InputMethodService#onKeyDown and InputMethodService#onKeyUp are responsible to call
6027        // InputMethodService#mExtractEditText.maybeHandleBackInTextActionMode(event).
6028        if (keyCode == KeyEvent.KEYCODE_BACK && handleBackInTextActionModeIfNeeded(event)) {
6029            return true;
6030        }
6031        return super.onKeyPreIme(keyCode, event);
6032    }
6033
6034    /**
6035     * @hide
6036     */
6037    public boolean handleBackInTextActionModeIfNeeded(KeyEvent event) {
6038        // Do nothing unless mEditor is in text action mode.
6039        if (mEditor == null || mEditor.mTextActionMode == null) {
6040            return false;
6041        }
6042
6043        if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
6044            KeyEvent.DispatcherState state = getKeyDispatcherState();
6045            if (state != null) {
6046                state.startTracking(event, this);
6047            }
6048            return true;
6049        } else if (event.getAction() == KeyEvent.ACTION_UP) {
6050            KeyEvent.DispatcherState state = getKeyDispatcherState();
6051            if (state != null) {
6052                state.handleUpEvent(event);
6053            }
6054            if (event.isTracking() && !event.isCanceled()) {
6055                stopTextActionMode();
6056                return true;
6057            }
6058        }
6059        return false;
6060    }
6061
6062    @Override
6063    public boolean onKeyDown(int keyCode, KeyEvent event) {
6064        final int which = doKeyDown(keyCode, event, null);
6065        if (which == KEY_EVENT_NOT_HANDLED) {
6066            return super.onKeyDown(keyCode, event);
6067        }
6068
6069        return true;
6070    }
6071
6072    @Override
6073    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
6074        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
6075        final int which = doKeyDown(keyCode, down, event);
6076        if (which == KEY_EVENT_NOT_HANDLED) {
6077            // Go through default dispatching.
6078            return super.onKeyMultiple(keyCode, repeatCount, event);
6079        }
6080        if (which == KEY_EVENT_HANDLED) {
6081            // Consumed the whole thing.
6082            return true;
6083        }
6084
6085        repeatCount--;
6086
6087        // We are going to dispatch the remaining events to either the input
6088        // or movement method.  To do this, we will just send a repeated stream
6089        // of down and up events until we have done the complete repeatCount.
6090        // It would be nice if those interfaces had an onKeyMultiple() method,
6091        // but adding that is a more complicated change.
6092        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
6093        if (which == KEY_DOWN_HANDLED_BY_KEY_LISTENER) {
6094            // mEditor and mEditor.mInput are not null from doKeyDown
6095            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
6096            while (--repeatCount > 0) {
6097                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
6098                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
6099            }
6100            hideErrorIfUnchanged();
6101
6102        } else if (which == KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD) {
6103            // mMovement is not null from doKeyDown
6104            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6105            while (--repeatCount > 0) {
6106                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
6107                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6108            }
6109        }
6110
6111        return true;
6112    }
6113
6114    /**
6115     * Returns true if pressing ENTER in this field advances focus instead
6116     * of inserting the character.  This is true mostly in single-line fields,
6117     * but also in mail addresses and subjects which will display on multiple
6118     * lines but where it doesn't make sense to insert newlines.
6119     */
6120    private boolean shouldAdvanceFocusOnEnter() {
6121        if (getKeyListener() == null) {
6122            return false;
6123        }
6124
6125        if (mSingleLine) {
6126            return true;
6127        }
6128
6129        if (mEditor != null &&
6130                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6131            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6132            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
6133                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
6134                return true;
6135            }
6136        }
6137
6138        return false;
6139    }
6140
6141    /**
6142     * Returns true if pressing TAB in this field advances focus instead
6143     * of inserting the character.  Insert tabs only in multi-line editors.
6144     */
6145    private boolean shouldAdvanceFocusOnTab() {
6146        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
6147                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6148            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6149            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
6150                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
6151                return false;
6152            }
6153        }
6154        return true;
6155    }
6156
6157    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
6158        if (!isEnabled()) {
6159            return KEY_EVENT_NOT_HANDLED;
6160        }
6161
6162        // If this is the initial keydown, we don't want to prevent a movement away from this view.
6163        // While this shouldn't be necessary because any time we're preventing default movement we
6164        // should be restricting the focus to remain within this view, thus we'll also receive
6165        // the key up event, occasionally key up events will get dropped and we don't want to
6166        // prevent the user from traversing out of this on the next key down.
6167        if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6168            mPreventDefaultMovement = false;
6169        }
6170
6171        switch (keyCode) {
6172            case KeyEvent.KEYCODE_ENTER:
6173                if (event.hasNoModifiers()) {
6174                    // When mInputContentType is set, we know that we are
6175                    // running in a "modern" cupcake environment, so don't need
6176                    // to worry about the application trying to capture
6177                    // enter key events.
6178                    if (mEditor != null && mEditor.mInputContentType != null) {
6179                        // If there is an action listener, given them a
6180                        // chance to consume the event.
6181                        if (mEditor.mInputContentType.onEditorActionListener != null &&
6182                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6183                                this, EditorInfo.IME_NULL, event)) {
6184                            mEditor.mInputContentType.enterDown = true;
6185                            // We are consuming the enter key for them.
6186                            return KEY_EVENT_HANDLED;
6187                        }
6188                    }
6189
6190                    // If our editor should move focus when enter is pressed, or
6191                    // this is a generated event from an IME action button, then
6192                    // don't let it be inserted into the text.
6193                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6194                            || shouldAdvanceFocusOnEnter()) {
6195                        if (hasOnClickListeners()) {
6196                            return KEY_EVENT_NOT_HANDLED;
6197                        }
6198                        return KEY_EVENT_HANDLED;
6199                    }
6200                }
6201                break;
6202
6203            case KeyEvent.KEYCODE_DPAD_CENTER:
6204                if (event.hasNoModifiers()) {
6205                    if (shouldAdvanceFocusOnEnter()) {
6206                        return KEY_EVENT_NOT_HANDLED;
6207                    }
6208                }
6209                break;
6210
6211            case KeyEvent.KEYCODE_TAB:
6212                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
6213                    if (shouldAdvanceFocusOnTab()) {
6214                        return KEY_EVENT_NOT_HANDLED;
6215                    }
6216                }
6217                break;
6218
6219                // Has to be done on key down (and not on key up) to correctly be intercepted.
6220            case KeyEvent.KEYCODE_BACK:
6221                if (mEditor != null && mEditor.mTextActionMode != null) {
6222                    stopTextActionMode();
6223                    return KEY_EVENT_HANDLED;
6224                }
6225                break;
6226
6227            case KeyEvent.KEYCODE_CUT:
6228                if (event.hasNoModifiers() && canCut()) {
6229                    if (onTextContextMenuItem(ID_CUT)) {
6230                        return KEY_EVENT_HANDLED;
6231                    }
6232                }
6233                break;
6234
6235            case KeyEvent.KEYCODE_COPY:
6236                if (event.hasNoModifiers() && canCopy()) {
6237                    if (onTextContextMenuItem(ID_COPY)) {
6238                        return KEY_EVENT_HANDLED;
6239                    }
6240                }
6241                break;
6242
6243            case KeyEvent.KEYCODE_PASTE:
6244                if (event.hasNoModifiers() && canPaste()) {
6245                    if (onTextContextMenuItem(ID_PASTE)) {
6246                        return KEY_EVENT_HANDLED;
6247                    }
6248                }
6249                break;
6250        }
6251
6252        if (mEditor != null && mEditor.mKeyListener != null) {
6253            boolean doDown = true;
6254            if (otherEvent != null) {
6255                try {
6256                    beginBatchEdit();
6257                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
6258                            otherEvent);
6259                    hideErrorIfUnchanged();
6260                    doDown = false;
6261                    if (handled) {
6262                        return KEY_EVENT_HANDLED;
6263                    }
6264                } catch (AbstractMethodError e) {
6265                    // onKeyOther was added after 1.0, so if it isn't
6266                    // implemented we need to try to dispatch as a regular down.
6267                } finally {
6268                    endBatchEdit();
6269                }
6270            }
6271
6272            if (doDown) {
6273                beginBatchEdit();
6274                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
6275                        keyCode, event);
6276                endBatchEdit();
6277                hideErrorIfUnchanged();
6278                if (handled) return KEY_DOWN_HANDLED_BY_KEY_LISTENER;
6279            }
6280        }
6281
6282        // bug 650865: sometimes we get a key event before a layout.
6283        // don't try to move around if we don't know the layout.
6284
6285        if (mMovement != null && mLayout != null) {
6286            boolean doDown = true;
6287            if (otherEvent != null) {
6288                try {
6289                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
6290                            otherEvent);
6291                    doDown = false;
6292                    if (handled) {
6293                        return KEY_EVENT_HANDLED;
6294                    }
6295                } catch (AbstractMethodError e) {
6296                    // onKeyOther was added after 1.0, so if it isn't
6297                    // implemented we need to try to dispatch as a regular down.
6298                }
6299            }
6300            if (doDown) {
6301                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event)) {
6302                    if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6303                        mPreventDefaultMovement = true;
6304                    }
6305                    return KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD;
6306                }
6307            }
6308        }
6309
6310        return mPreventDefaultMovement && !KeyEvent.isModifierKey(keyCode) ?
6311                KEY_EVENT_HANDLED : KEY_EVENT_NOT_HANDLED;
6312    }
6313
6314    /**
6315     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
6316     * can be recorded.
6317     * @hide
6318     */
6319    public void resetErrorChangedFlag() {
6320        /*
6321         * Keep track of what the error was before doing the input
6322         * so that if an input filter changed the error, we leave
6323         * that error showing.  Otherwise, we take down whatever
6324         * error was showing when the user types something.
6325         */
6326        if (mEditor != null) mEditor.mErrorWasChanged = false;
6327    }
6328
6329    /**
6330     * @hide
6331     */
6332    public void hideErrorIfUnchanged() {
6333        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
6334            setError(null, null);
6335        }
6336    }
6337
6338    @Override
6339    public boolean onKeyUp(int keyCode, KeyEvent event) {
6340        if (!isEnabled()) {
6341            return super.onKeyUp(keyCode, event);
6342        }
6343
6344        if (!KeyEvent.isModifierKey(keyCode)) {
6345            mPreventDefaultMovement = false;
6346        }
6347
6348        switch (keyCode) {
6349            case KeyEvent.KEYCODE_DPAD_CENTER:
6350                if (event.hasNoModifiers()) {
6351                    /*
6352                     * If there is a click listener, just call through to
6353                     * super, which will invoke it.
6354                     *
6355                     * If there isn't a click listener, try to show the soft
6356                     * input method.  (It will also
6357                     * call performClick(), but that won't do anything in
6358                     * this case.)
6359                     */
6360                    if (!hasOnClickListeners()) {
6361                        if (mMovement != null && mText instanceof Editable
6362                                && mLayout != null && onCheckIsTextEditor()) {
6363                            InputMethodManager imm = InputMethodManager.peekInstance();
6364                            viewClicked(imm);
6365                            if (imm != null && getShowSoftInputOnFocus()) {
6366                                imm.showSoftInput(this, 0);
6367                            }
6368                        }
6369                    }
6370                }
6371                return super.onKeyUp(keyCode, event);
6372
6373            case KeyEvent.KEYCODE_ENTER:
6374                if (event.hasNoModifiers()) {
6375                    if (mEditor != null && mEditor.mInputContentType != null
6376                            && mEditor.mInputContentType.onEditorActionListener != null
6377                            && mEditor.mInputContentType.enterDown) {
6378                        mEditor.mInputContentType.enterDown = false;
6379                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6380                                this, EditorInfo.IME_NULL, event)) {
6381                            return true;
6382                        }
6383                    }
6384
6385                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6386                            || shouldAdvanceFocusOnEnter()) {
6387                        /*
6388                         * If there is a click listener, just call through to
6389                         * super, which will invoke it.
6390                         *
6391                         * If there isn't a click listener, try to advance focus,
6392                         * but still call through to super, which will reset the
6393                         * pressed state and longpress state.  (It will also
6394                         * call performClick(), but that won't do anything in
6395                         * this case.)
6396                         */
6397                        if (!hasOnClickListeners()) {
6398                            View v = focusSearch(FOCUS_DOWN);
6399
6400                            if (v != null) {
6401                                if (!v.requestFocus(FOCUS_DOWN)) {
6402                                    throw new IllegalStateException(
6403                                            "focus search returned a view " +
6404                                            "that wasn't able to take focus!");
6405                                }
6406
6407                                /*
6408                                 * Return true because we handled the key; super
6409                                 * will return false because there was no click
6410                                 * listener.
6411                                 */
6412                                super.onKeyUp(keyCode, event);
6413                                return true;
6414                            } else if ((event.getFlags()
6415                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
6416                                // No target for next focus, but make sure the IME
6417                                // if this came from it.
6418                                InputMethodManager imm = InputMethodManager.peekInstance();
6419                                if (imm != null && imm.isActive(this)) {
6420                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
6421                                }
6422                            }
6423                        }
6424                    }
6425                    return super.onKeyUp(keyCode, event);
6426                }
6427                break;
6428        }
6429
6430        if (mEditor != null && mEditor.mKeyListener != null)
6431            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
6432                return true;
6433
6434        if (mMovement != null && mLayout != null)
6435            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
6436                return true;
6437
6438        return super.onKeyUp(keyCode, event);
6439    }
6440
6441    @Override
6442    public boolean onCheckIsTextEditor() {
6443        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
6444    }
6445
6446    @Override
6447    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
6448        if (onCheckIsTextEditor() && isEnabled()) {
6449            mEditor.createInputMethodStateIfNeeded();
6450            outAttrs.inputType = getInputType();
6451            if (mEditor.mInputContentType != null) {
6452                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
6453                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
6454                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
6455                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
6456                outAttrs.extras = mEditor.mInputContentType.extras;
6457                outAttrs.hintLocales = mEditor.mInputContentType.imeHintLocales;
6458            } else {
6459                outAttrs.imeOptions = EditorInfo.IME_NULL;
6460                outAttrs.hintLocales = null;
6461            }
6462            if (focusSearch(FOCUS_DOWN) != null) {
6463                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
6464            }
6465            if (focusSearch(FOCUS_UP) != null) {
6466                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
6467            }
6468            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
6469                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
6470                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
6471                    // An action has not been set, but the enter key will move to
6472                    // the next focus, so set the action to that.
6473                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
6474                } else {
6475                    // An action has not been set, and there is no focus to move
6476                    // to, so let's just supply a "done" action.
6477                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
6478                }
6479                if (!shouldAdvanceFocusOnEnter()) {
6480                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6481                }
6482            }
6483            if (isMultilineInputType(outAttrs.inputType)) {
6484                // Multi-line text editors should always show an enter key.
6485                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6486            }
6487            outAttrs.hintText = mHint;
6488            if (mText instanceof Editable) {
6489                InputConnection ic = new EditableInputConnection(this);
6490                outAttrs.initialSelStart = getSelectionStart();
6491                outAttrs.initialSelEnd = getSelectionEnd();
6492                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
6493                return ic;
6494            }
6495        }
6496        return null;
6497    }
6498
6499    /**
6500     * If this TextView contains editable content, extract a portion of it
6501     * based on the information in <var>request</var> in to <var>outText</var>.
6502     * @return Returns true if the text was successfully extracted, else false.
6503     */
6504    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
6505        createEditorIfNeeded();
6506        return mEditor.extractText(request, outText);
6507    }
6508
6509    /**
6510     * This is used to remove all style-impacting spans from text before new
6511     * extracted text is being replaced into it, so that we don't have any
6512     * lingering spans applied during the replace.
6513     */
6514    static void removeParcelableSpans(Spannable spannable, int start, int end) {
6515        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
6516        int i = spans.length;
6517        while (i > 0) {
6518            i--;
6519            spannable.removeSpan(spans[i]);
6520        }
6521    }
6522
6523    /**
6524     * Apply to this text view the given extracted text, as previously
6525     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
6526     */
6527    public void setExtractedText(ExtractedText text) {
6528        Editable content = getEditableText();
6529        if (text.text != null) {
6530            if (content == null) {
6531                setText(text.text, TextView.BufferType.EDITABLE);
6532            } else {
6533                int start = 0;
6534                int end = content.length();
6535
6536                if (text.partialStartOffset >= 0) {
6537                    final int N = content.length();
6538                    start = text.partialStartOffset;
6539                    if (start > N) start = N;
6540                    end = text.partialEndOffset;
6541                    if (end > N) end = N;
6542                }
6543
6544                removeParcelableSpans(content, start, end);
6545                if (TextUtils.equals(content.subSequence(start, end), text.text)) {
6546                    if (text.text instanceof Spanned) {
6547                        // OK to copy spans only.
6548                        TextUtils.copySpansFrom((Spanned) text.text, 0, end - start,
6549                                Object.class, content, start);
6550                    }
6551                } else {
6552                    content.replace(start, end, text.text);
6553                }
6554            }
6555        }
6556
6557        // Now set the selection position...  make sure it is in range, to
6558        // avoid crashes.  If this is a partial update, it is possible that
6559        // the underlying text may have changed, causing us problems here.
6560        // Also we just don't want to trust clients to do the right thing.
6561        Spannable sp = (Spannable)getText();
6562        final int N = sp.length();
6563        int start = text.selectionStart;
6564        if (start < 0) start = 0;
6565        else if (start > N) start = N;
6566        int end = text.selectionEnd;
6567        if (end < 0) end = 0;
6568        else if (end > N) end = N;
6569        Selection.setSelection(sp, start, end);
6570
6571        // Finally, update the selection mode.
6572        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
6573            MetaKeyKeyListener.startSelecting(this, sp);
6574        } else {
6575            MetaKeyKeyListener.stopSelecting(this, sp);
6576        }
6577    }
6578
6579    /**
6580     * @hide
6581     */
6582    public void setExtracting(ExtractedTextRequest req) {
6583        if (mEditor.mInputMethodState != null) {
6584            mEditor.mInputMethodState.mExtractedTextRequest = req;
6585        }
6586        // This would stop a possible selection mode, but no such mode is started in case
6587        // extracted mode will start. Some text is selected though, and will trigger an action mode
6588        // in the extracted view.
6589        mEditor.hideCursorAndSpanControllers();
6590        stopTextActionMode();
6591        if (mEditor.mSelectionModifierCursorController != null) {
6592            mEditor.mSelectionModifierCursorController.resetTouchOffsets();
6593        }
6594    }
6595
6596    /**
6597     * Called by the framework in response to a text completion from
6598     * the current input method, provided by it calling
6599     * {@link InputConnection#commitCompletion
6600     * InputConnection.commitCompletion()}.  The default implementation does
6601     * nothing; text views that are supporting auto-completion should override
6602     * this to do their desired behavior.
6603     *
6604     * @param text The auto complete text the user has selected.
6605     */
6606    public void onCommitCompletion(CompletionInfo text) {
6607        // intentionally empty
6608    }
6609
6610    /**
6611     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
6612     * a dictionnary) from the current input method, provided by it calling
6613     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
6614     * implementation flashes the background of the corrected word to provide feedback to the user.
6615     *
6616     * @param info The auto correct info about the text that was corrected.
6617     */
6618    public void onCommitCorrection(CorrectionInfo info) {
6619        if (mEditor != null) mEditor.onCommitCorrection(info);
6620    }
6621
6622    public void beginBatchEdit() {
6623        if (mEditor != null) mEditor.beginBatchEdit();
6624    }
6625
6626    public void endBatchEdit() {
6627        if (mEditor != null) mEditor.endBatchEdit();
6628    }
6629
6630    /**
6631     * Called by the framework in response to a request to begin a batch
6632     * of edit operations through a call to link {@link #beginBatchEdit()}.
6633     */
6634    public void onBeginBatchEdit() {
6635        // intentionally empty
6636    }
6637
6638    /**
6639     * Called by the framework in response to a request to end a batch
6640     * of edit operations through a call to link {@link #endBatchEdit}.
6641     */
6642    public void onEndBatchEdit() {
6643        // intentionally empty
6644    }
6645
6646    /**
6647     * Called by the framework in response to a private command from the
6648     * current method, provided by it calling
6649     * {@link InputConnection#performPrivateCommand
6650     * InputConnection.performPrivateCommand()}.
6651     *
6652     * @param action The action name of the command.
6653     * @param data Any additional data for the command.  This may be null.
6654     * @return Return true if you handled the command, else false.
6655     */
6656    public boolean onPrivateIMECommand(String action, Bundle data) {
6657        return false;
6658    }
6659
6660    private void nullLayouts() {
6661        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
6662            mSavedLayout = (BoringLayout) mLayout;
6663        }
6664        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
6665            mSavedHintLayout = (BoringLayout) mHintLayout;
6666        }
6667
6668        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
6669
6670        mBoring = mHintBoring = null;
6671
6672        // Since it depends on the value of mLayout
6673        if (mEditor != null) mEditor.prepareCursorControllers();
6674    }
6675
6676    /**
6677     * Make a new Layout based on the already-measured size of the view,
6678     * on the assumption that it was measured correctly at some point.
6679     */
6680    private void assumeLayout() {
6681        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6682
6683        if (width < 1) {
6684            width = 0;
6685        }
6686
6687        int physicalWidth = width;
6688
6689        if (mHorizontallyScrolling) {
6690            width = VERY_WIDE;
6691        }
6692
6693        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
6694                      physicalWidth, false);
6695    }
6696
6697    private Layout.Alignment getLayoutAlignment() {
6698        Layout.Alignment alignment;
6699        switch (getTextAlignment()) {
6700            case TEXT_ALIGNMENT_GRAVITY:
6701                switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
6702                    case Gravity.START:
6703                        alignment = Layout.Alignment.ALIGN_NORMAL;
6704                        break;
6705                    case Gravity.END:
6706                        alignment = Layout.Alignment.ALIGN_OPPOSITE;
6707                        break;
6708                    case Gravity.LEFT:
6709                        alignment = Layout.Alignment.ALIGN_LEFT;
6710                        break;
6711                    case Gravity.RIGHT:
6712                        alignment = Layout.Alignment.ALIGN_RIGHT;
6713                        break;
6714                    case Gravity.CENTER_HORIZONTAL:
6715                        alignment = Layout.Alignment.ALIGN_CENTER;
6716                        break;
6717                    default:
6718                        alignment = Layout.Alignment.ALIGN_NORMAL;
6719                        break;
6720                }
6721                break;
6722            case TEXT_ALIGNMENT_TEXT_START:
6723                alignment = Layout.Alignment.ALIGN_NORMAL;
6724                break;
6725            case TEXT_ALIGNMENT_TEXT_END:
6726                alignment = Layout.Alignment.ALIGN_OPPOSITE;
6727                break;
6728            case TEXT_ALIGNMENT_CENTER:
6729                alignment = Layout.Alignment.ALIGN_CENTER;
6730                break;
6731            case TEXT_ALIGNMENT_VIEW_START:
6732                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6733                        Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
6734                break;
6735            case TEXT_ALIGNMENT_VIEW_END:
6736                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6737                        Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
6738                break;
6739            case TEXT_ALIGNMENT_INHERIT:
6740                // This should never happen as we have already resolved the text alignment
6741                // but better safe than sorry so we just fall through
6742            default:
6743                alignment = Layout.Alignment.ALIGN_NORMAL;
6744                break;
6745        }
6746        return alignment;
6747    }
6748
6749    /**
6750     * The width passed in is now the desired layout width,
6751     * not the full view width with padding.
6752     * {@hide}
6753     */
6754    protected void makeNewLayout(int wantWidth, int hintWidth,
6755                                 BoringLayout.Metrics boring,
6756                                 BoringLayout.Metrics hintBoring,
6757                                 int ellipsisWidth, boolean bringIntoView) {
6758        stopMarquee();
6759
6760        // Update "old" cached values
6761        mOldMaximum = mMaximum;
6762        mOldMaxMode = mMaxMode;
6763
6764        mHighlightPathBogus = true;
6765
6766        if (wantWidth < 0) {
6767            wantWidth = 0;
6768        }
6769        if (hintWidth < 0) {
6770            hintWidth = 0;
6771        }
6772
6773        Layout.Alignment alignment = getLayoutAlignment();
6774        final boolean testDirChange = mSingleLine && mLayout != null &&
6775            (alignment == Layout.Alignment.ALIGN_NORMAL ||
6776             alignment == Layout.Alignment.ALIGN_OPPOSITE);
6777        int oldDir = 0;
6778        if (testDirChange) oldDir = mLayout.getParagraphDirection(0);
6779        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
6780        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
6781                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
6782        TruncateAt effectiveEllipsize = mEllipsize;
6783        if (mEllipsize == TruncateAt.MARQUEE &&
6784                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6785            effectiveEllipsize = TruncateAt.END_SMALL;
6786        }
6787
6788        if (mTextDir == null) {
6789            mTextDir = getTextDirectionHeuristic();
6790        }
6791
6792        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
6793                effectiveEllipsize, effectiveEllipsize == mEllipsize);
6794        if (switchEllipsize) {
6795            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
6796                    TruncateAt.END : TruncateAt.MARQUEE;
6797            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
6798                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
6799        }
6800
6801        shouldEllipsize = mEllipsize != null;
6802        mHintLayout = null;
6803
6804        if (mHint != null) {
6805            if (shouldEllipsize) hintWidth = wantWidth;
6806
6807            if (hintBoring == UNKNOWN_BORING) {
6808                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
6809                                                   mHintBoring);
6810                if (hintBoring != null) {
6811                    mHintBoring = hintBoring;
6812                }
6813            }
6814
6815            if (hintBoring != null) {
6816                if (hintBoring.width <= hintWidth &&
6817                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
6818                    if (mSavedHintLayout != null) {
6819                        mHintLayout = mSavedHintLayout.
6820                                replaceOrMake(mHint, mTextPaint,
6821                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6822                                hintBoring, mIncludePad);
6823                    } else {
6824                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6825                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6826                                hintBoring, mIncludePad);
6827                    }
6828
6829                    mSavedHintLayout = (BoringLayout) mHintLayout;
6830                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
6831                    if (mSavedHintLayout != null) {
6832                        mHintLayout = mSavedHintLayout.
6833                                replaceOrMake(mHint, mTextPaint,
6834                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6835                                hintBoring, mIncludePad, mEllipsize,
6836                                ellipsisWidth);
6837                    } else {
6838                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6839                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6840                                hintBoring, mIncludePad, mEllipsize,
6841                                ellipsisWidth);
6842                    }
6843                }
6844            }
6845            // TODO: code duplication with makeSingleLayout()
6846            if (mHintLayout == null) {
6847                StaticLayout.Builder builder = StaticLayout.Builder.obtain(mHint, 0,
6848                        mHint.length(), mTextPaint, hintWidth)
6849                        .setAlignment(alignment)
6850                        .setTextDirection(mTextDir)
6851                        .setLineSpacing(mSpacingAdd, mSpacingMult)
6852                        .setIncludePad(mIncludePad)
6853                        .setBreakStrategy(mBreakStrategy)
6854                        .setHyphenationFrequency(mHyphenationFrequency)
6855                        .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6856                if (shouldEllipsize) {
6857                    builder.setEllipsize(mEllipsize)
6858                            .setEllipsizedWidth(ellipsisWidth);
6859                }
6860                mHintLayout = builder.build();
6861            }
6862        }
6863
6864        if (bringIntoView || (testDirChange && oldDir != mLayout.getParagraphDirection(0))) {
6865            registerForPreDraw();
6866        }
6867
6868        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6869            if (!compressText(ellipsisWidth)) {
6870                final int height = mLayoutParams.height;
6871                // If the size of the view does not depend on the size of the text, try to
6872                // start the marquee immediately
6873                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
6874                    startMarquee();
6875                } else {
6876                    // Defer the start of the marquee until we know our width (see setFrame())
6877                    mRestartMarquee = true;
6878                }
6879            }
6880        }
6881
6882        // CursorControllers need a non-null mLayout
6883        if (mEditor != null) mEditor.prepareCursorControllers();
6884    }
6885
6886    /**
6887     * @hide
6888     */
6889    protected Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
6890            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
6891            boolean useSaved) {
6892        Layout result = null;
6893        if (mText instanceof Spannable) {
6894            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
6895                    alignment, mTextDir, mSpacingMult, mSpacingAdd, mIncludePad,
6896                    mBreakStrategy, mHyphenationFrequency,
6897                    getKeyListener() == null ? effectiveEllipsize : null, ellipsisWidth);
6898        } else {
6899            if (boring == UNKNOWN_BORING) {
6900                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6901                if (boring != null) {
6902                    mBoring = boring;
6903                }
6904            }
6905
6906            if (boring != null) {
6907                if (boring.width <= wantWidth &&
6908                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
6909                    if (useSaved && mSavedLayout != null) {
6910                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6911                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6912                                boring, mIncludePad);
6913                    } else {
6914                        result = BoringLayout.make(mTransformed, mTextPaint,
6915                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6916                                boring, mIncludePad);
6917                    }
6918
6919                    if (useSaved) {
6920                        mSavedLayout = (BoringLayout) result;
6921                    }
6922                } else if (shouldEllipsize && boring.width <= wantWidth) {
6923                    if (useSaved && mSavedLayout != null) {
6924                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6925                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6926                                boring, mIncludePad, effectiveEllipsize,
6927                                ellipsisWidth);
6928                    } else {
6929                        result = BoringLayout.make(mTransformed, mTextPaint,
6930                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6931                                boring, mIncludePad, effectiveEllipsize,
6932                                ellipsisWidth);
6933                    }
6934                }
6935            }
6936        }
6937        if (result == null) {
6938            StaticLayout.Builder builder = StaticLayout.Builder.obtain(mTransformed,
6939                    0, mTransformed.length(), mTextPaint, wantWidth)
6940                    .setAlignment(alignment)
6941                    .setTextDirection(mTextDir)
6942                    .setLineSpacing(mSpacingAdd, mSpacingMult)
6943                    .setIncludePad(mIncludePad)
6944                    .setBreakStrategy(mBreakStrategy)
6945                    .setHyphenationFrequency(mHyphenationFrequency)
6946                    .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6947            if (shouldEllipsize) {
6948                builder.setEllipsize(effectiveEllipsize)
6949                        .setEllipsizedWidth(ellipsisWidth);
6950
6951            }
6952            // TODO: explore always setting maxLines
6953            result = builder.build();
6954        }
6955        return result;
6956    }
6957
6958    private boolean compressText(float width) {
6959        if (isHardwareAccelerated()) return false;
6960
6961        // Only compress the text if it hasn't been compressed by the previous pass
6962        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
6963                mTextPaint.getTextScaleX() == 1.0f) {
6964            final float textWidth = mLayout.getLineWidth(0);
6965            final float overflow = (textWidth + 1.0f - width) / width;
6966            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
6967                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
6968                post(new Runnable() {
6969                    public void run() {
6970                        requestLayout();
6971                    }
6972                });
6973                return true;
6974            }
6975        }
6976
6977        return false;
6978    }
6979
6980    private static int desired(Layout layout) {
6981        int n = layout.getLineCount();
6982        CharSequence text = layout.getText();
6983        float max = 0;
6984
6985        // if any line was wrapped, we can't use it.
6986        // but it's ok for the last line not to have a newline
6987
6988        for (int i = 0; i < n - 1; i++) {
6989            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
6990                return -1;
6991        }
6992
6993        for (int i = 0; i < n; i++) {
6994            max = Math.max(max, layout.getLineWidth(i));
6995        }
6996
6997        return (int) Math.ceil(max);
6998    }
6999
7000    /**
7001     * Set whether the TextView includes extra top and bottom padding to make
7002     * room for accents that go above the normal ascent and descent.
7003     * The default is true.
7004     *
7005     * @see #getIncludeFontPadding()
7006     *
7007     * @attr ref android.R.styleable#TextView_includeFontPadding
7008     */
7009    public void setIncludeFontPadding(boolean includepad) {
7010        if (mIncludePad != includepad) {
7011            mIncludePad = includepad;
7012
7013            if (mLayout != null) {
7014                nullLayouts();
7015                requestLayout();
7016                invalidate();
7017            }
7018        }
7019    }
7020
7021    /**
7022     * Gets whether the TextView includes extra top and bottom padding to make
7023     * room for accents that go above the normal ascent and descent.
7024     *
7025     * @see #setIncludeFontPadding(boolean)
7026     *
7027     * @attr ref android.R.styleable#TextView_includeFontPadding
7028     */
7029    public boolean getIncludeFontPadding() {
7030        return mIncludePad;
7031    }
7032
7033    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
7034
7035    @Override
7036    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
7037        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
7038        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
7039        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
7040        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
7041
7042        int width;
7043        int height;
7044
7045        BoringLayout.Metrics boring = UNKNOWN_BORING;
7046        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
7047
7048        if (mTextDir == null) {
7049            mTextDir = getTextDirectionHeuristic();
7050        }
7051
7052        int des = -1;
7053        boolean fromexisting = false;
7054
7055        if (widthMode == MeasureSpec.EXACTLY) {
7056            // Parent has told us how big to be. So be it.
7057            width = widthSize;
7058        } else {
7059            if (mLayout != null && mEllipsize == null) {
7060                des = desired(mLayout);
7061            }
7062
7063            if (des < 0) {
7064                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
7065                if (boring != null) {
7066                    mBoring = boring;
7067                }
7068            } else {
7069                fromexisting = true;
7070            }
7071
7072            if (boring == null || boring == UNKNOWN_BORING) {
7073                if (des < 0) {
7074                    des = (int) Math.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
7075                }
7076                width = des;
7077            } else {
7078                width = boring.width;
7079            }
7080
7081            final Drawables dr = mDrawables;
7082            if (dr != null) {
7083                width = Math.max(width, dr.mDrawableWidthTop);
7084                width = Math.max(width, dr.mDrawableWidthBottom);
7085            }
7086
7087            if (mHint != null) {
7088                int hintDes = -1;
7089                int hintWidth;
7090
7091                if (mHintLayout != null && mEllipsize == null) {
7092                    hintDes = desired(mHintLayout);
7093                }
7094
7095                if (hintDes < 0) {
7096                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
7097                    if (hintBoring != null) {
7098                        mHintBoring = hintBoring;
7099                    }
7100                }
7101
7102                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
7103                    if (hintDes < 0) {
7104                        hintDes = (int) Math.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
7105                    }
7106                    hintWidth = hintDes;
7107                } else {
7108                    hintWidth = hintBoring.width;
7109                }
7110
7111                if (hintWidth > width) {
7112                    width = hintWidth;
7113                }
7114            }
7115
7116            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
7117
7118            if (mMaxWidthMode == EMS) {
7119                width = Math.min(width, mMaxWidth * getLineHeight());
7120            } else {
7121                width = Math.min(width, mMaxWidth);
7122            }
7123
7124            if (mMinWidthMode == EMS) {
7125                width = Math.max(width, mMinWidth * getLineHeight());
7126            } else {
7127                width = Math.max(width, mMinWidth);
7128            }
7129
7130            // Check against our minimum width
7131            width = Math.max(width, getSuggestedMinimumWidth());
7132
7133            if (widthMode == MeasureSpec.AT_MOST) {
7134                width = Math.min(widthSize, width);
7135            }
7136        }
7137
7138        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
7139        int unpaddedWidth = want;
7140
7141        if (mHorizontallyScrolling) want = VERY_WIDE;
7142
7143        int hintWant = want;
7144        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
7145
7146        if (mLayout == null) {
7147            makeNewLayout(want, hintWant, boring, hintBoring,
7148                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7149        } else {
7150            final boolean layoutChanged = (mLayout.getWidth() != want) ||
7151                    (hintWidth != hintWant) ||
7152                    (mLayout.getEllipsizedWidth() !=
7153                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
7154
7155            final boolean widthChanged = (mHint == null) &&
7156                    (mEllipsize == null) &&
7157                    (want > mLayout.getWidth()) &&
7158                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
7159
7160            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
7161
7162            if (layoutChanged || maximumChanged) {
7163                if (!maximumChanged && widthChanged) {
7164                    mLayout.increaseWidthTo(want);
7165                } else {
7166                    makeNewLayout(want, hintWant, boring, hintBoring,
7167                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7168                }
7169            } else {
7170                // Nothing has changed
7171            }
7172        }
7173
7174        if (heightMode == MeasureSpec.EXACTLY) {
7175            // Parent has told us how big to be. So be it.
7176            height = heightSize;
7177            mDesiredHeightAtMeasure = -1;
7178        } else {
7179            int desired = getDesiredHeight();
7180
7181            height = desired;
7182            mDesiredHeightAtMeasure = desired;
7183
7184            if (heightMode == MeasureSpec.AT_MOST) {
7185                height = Math.min(desired, heightSize);
7186            }
7187        }
7188
7189        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
7190        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
7191            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
7192        }
7193
7194        /*
7195         * We didn't let makeNewLayout() register to bring the cursor into view,
7196         * so do it here if there is any possibility that it is needed.
7197         */
7198        if (mMovement != null ||
7199            mLayout.getWidth() > unpaddedWidth ||
7200            mLayout.getHeight() > unpaddedHeight) {
7201            registerForPreDraw();
7202        } else {
7203            scrollTo(0, 0);
7204        }
7205
7206        setMeasuredDimension(width, height);
7207    }
7208
7209    private int getDesiredHeight() {
7210        return Math.max(
7211                getDesiredHeight(mLayout, true),
7212                getDesiredHeight(mHintLayout, mEllipsize != null));
7213    }
7214
7215    private int getDesiredHeight(Layout layout, boolean cap) {
7216        if (layout == null) {
7217            return 0;
7218        }
7219
7220        int linecount = layout.getLineCount();
7221        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
7222        int desired = layout.getLineTop(linecount);
7223
7224        final Drawables dr = mDrawables;
7225        if (dr != null) {
7226            desired = Math.max(desired, dr.mDrawableHeightLeft);
7227            desired = Math.max(desired, dr.mDrawableHeightRight);
7228        }
7229
7230        desired += pad;
7231
7232        if (mMaxMode == LINES) {
7233            /*
7234             * Don't cap the hint to a certain number of lines.
7235             * (Do cap it, though, if we have a maximum pixel height.)
7236             */
7237            if (cap) {
7238                if (linecount > mMaximum) {
7239                    desired = layout.getLineTop(mMaximum);
7240
7241                    if (dr != null) {
7242                        desired = Math.max(desired, dr.mDrawableHeightLeft);
7243                        desired = Math.max(desired, dr.mDrawableHeightRight);
7244                    }
7245
7246                    desired += pad;
7247                    linecount = mMaximum;
7248                }
7249            }
7250        } else {
7251            desired = Math.min(desired, mMaximum);
7252        }
7253
7254        if (mMinMode == LINES) {
7255            if (linecount < mMinimum) {
7256                desired += getLineHeight() * (mMinimum - linecount);
7257            }
7258        } else {
7259            desired = Math.max(desired, mMinimum);
7260        }
7261
7262        // Check against our minimum height
7263        desired = Math.max(desired, getSuggestedMinimumHeight());
7264
7265        return desired;
7266    }
7267
7268    /**
7269     * Check whether a change to the existing text layout requires a
7270     * new view layout.
7271     */
7272    private void checkForResize() {
7273        boolean sizeChanged = false;
7274
7275        if (mLayout != null) {
7276            // Check if our width changed
7277            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
7278                sizeChanged = true;
7279                invalidate();
7280            }
7281
7282            // Check if our height changed
7283            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
7284                int desiredHeight = getDesiredHeight();
7285
7286                if (desiredHeight != this.getHeight()) {
7287                    sizeChanged = true;
7288                }
7289            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
7290                if (mDesiredHeightAtMeasure >= 0) {
7291                    int desiredHeight = getDesiredHeight();
7292
7293                    if (desiredHeight != mDesiredHeightAtMeasure) {
7294                        sizeChanged = true;
7295                    }
7296                }
7297            }
7298        }
7299
7300        if (sizeChanged) {
7301            requestLayout();
7302            // caller will have already invalidated
7303        }
7304    }
7305
7306    /**
7307     * Check whether entirely new text requires a new view layout
7308     * or merely a new text layout.
7309     */
7310    private void checkForRelayout() {
7311        // If we have a fixed width, we can just swap in a new text layout
7312        // if the text height stays the same or if the view height is fixed.
7313
7314        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
7315                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
7316                (mHint == null || mHintLayout != null) &&
7317                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
7318            // Static width, so try making a new text layout.
7319
7320            int oldht = mLayout.getHeight();
7321            int want = mLayout.getWidth();
7322            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
7323
7324            /*
7325             * No need to bring the text into view, since the size is not
7326             * changing (unless we do the requestLayout(), in which case it
7327             * will happen at measure).
7328             */
7329            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
7330                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
7331                          false);
7332
7333            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
7334                // In a fixed-height view, so use our new text layout.
7335                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
7336                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
7337                    invalidate();
7338                    return;
7339                }
7340
7341                // Dynamic height, but height has stayed the same,
7342                // so use our new text layout.
7343                if (mLayout.getHeight() == oldht &&
7344                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
7345                    invalidate();
7346                    return;
7347                }
7348            }
7349
7350            // We lose: the height has changed and we have a dynamic height.
7351            // Request a new view layout using our new text layout.
7352            requestLayout();
7353            invalidate();
7354        } else {
7355            // Dynamic width, so we have no choice but to request a new
7356            // view layout with a new text layout.
7357            nullLayouts();
7358            requestLayout();
7359            invalidate();
7360        }
7361    }
7362
7363    @Override
7364    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
7365        super.onLayout(changed, left, top, right, bottom);
7366        if (mDeferScroll >= 0) {
7367            int curs = mDeferScroll;
7368            mDeferScroll = -1;
7369            bringPointIntoView(Math.min(curs, mText.length()));
7370        }
7371    }
7372
7373    private boolean isShowingHint() {
7374        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
7375    }
7376
7377    /**
7378     * Returns true if anything changed.
7379     */
7380    private boolean bringTextIntoView() {
7381        Layout layout = isShowingHint() ? mHintLayout : mLayout;
7382        int line = 0;
7383        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7384            line = layout.getLineCount() - 1;
7385        }
7386
7387        Layout.Alignment a = layout.getParagraphAlignment(line);
7388        int dir = layout.getParagraphDirection(line);
7389        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7390        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7391        int ht = layout.getHeight();
7392
7393        int scrollx, scrolly;
7394
7395        // Convert to left, center, or right alignment.
7396        if (a == Layout.Alignment.ALIGN_NORMAL) {
7397            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
7398                Layout.Alignment.ALIGN_RIGHT;
7399        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
7400            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
7401                Layout.Alignment.ALIGN_LEFT;
7402        }
7403
7404        if (a == Layout.Alignment.ALIGN_CENTER) {
7405            /*
7406             * Keep centered if possible, or, if it is too wide to fit,
7407             * keep leading edge in view.
7408             */
7409
7410            int left = (int) Math.floor(layout.getLineLeft(line));
7411            int right = (int) Math.ceil(layout.getLineRight(line));
7412
7413            if (right - left < hspace) {
7414                scrollx = (right + left) / 2 - hspace / 2;
7415            } else {
7416                if (dir < 0) {
7417                    scrollx = right - hspace;
7418                } else {
7419                    scrollx = left;
7420                }
7421            }
7422        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
7423            int right = (int) Math.ceil(layout.getLineRight(line));
7424            scrollx = right - hspace;
7425        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
7426            scrollx = (int) Math.floor(layout.getLineLeft(line));
7427        }
7428
7429        if (ht < vspace) {
7430            scrolly = 0;
7431        } else {
7432            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7433                scrolly = ht - vspace;
7434            } else {
7435                scrolly = 0;
7436            }
7437        }
7438
7439        if (scrollx != mScrollX || scrolly != mScrollY) {
7440            scrollTo(scrollx, scrolly);
7441            return true;
7442        } else {
7443            return false;
7444        }
7445    }
7446
7447    /**
7448     * Move the point, specified by the offset, into the view if it is needed.
7449     * This has to be called after layout. Returns true if anything changed.
7450     */
7451    public boolean bringPointIntoView(int offset) {
7452        if (isLayoutRequested()) {
7453            mDeferScroll = offset;
7454            return false;
7455        }
7456        boolean changed = false;
7457
7458        Layout layout = isShowingHint() ? mHintLayout: mLayout;
7459
7460        if (layout == null) return changed;
7461
7462        int line = layout.getLineForOffset(offset);
7463
7464        int grav;
7465
7466        switch (layout.getParagraphAlignment(line)) {
7467            case ALIGN_LEFT:
7468                grav = 1;
7469                break;
7470            case ALIGN_RIGHT:
7471                grav = -1;
7472                break;
7473            case ALIGN_NORMAL:
7474                grav = layout.getParagraphDirection(line);
7475                break;
7476            case ALIGN_OPPOSITE:
7477                grav = -layout.getParagraphDirection(line);
7478                break;
7479            case ALIGN_CENTER:
7480            default:
7481                grav = 0;
7482                break;
7483        }
7484
7485        // We only want to clamp the cursor to fit within the layout width
7486        // in left-to-right modes, because in a right to left alignment,
7487        // we want to scroll to keep the line-right on the screen, as other
7488        // lines are likely to have text flush with the right margin, which
7489        // we want to keep visible.
7490        // A better long-term solution would probably be to measure both
7491        // the full line and a blank-trimmed version, and, for example, use
7492        // the latter measurement for centering and right alignment, but for
7493        // the time being we only implement the cursor clamping in left to
7494        // right where it is most likely to be annoying.
7495        final boolean clamped = grav > 0;
7496        // FIXME: Is it okay to truncate this, or should we round?
7497        final int x = (int)layout.getPrimaryHorizontal(offset, clamped);
7498        final int top = layout.getLineTop(line);
7499        final int bottom = layout.getLineTop(line + 1);
7500
7501        int left = (int) Math.floor(layout.getLineLeft(line));
7502        int right = (int) Math.ceil(layout.getLineRight(line));
7503        int ht = layout.getHeight();
7504
7505        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7506        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7507        if (!mHorizontallyScrolling && right - left > hspace && right > x) {
7508            // If cursor has been clamped, make sure we don't scroll.
7509            right = Math.max(x, left + hspace);
7510        }
7511
7512        int hslack = (bottom - top) / 2;
7513        int vslack = hslack;
7514
7515        if (vslack > vspace / 4)
7516            vslack = vspace / 4;
7517        if (hslack > hspace / 4)
7518            hslack = hspace / 4;
7519
7520        int hs = mScrollX;
7521        int vs = mScrollY;
7522
7523        if (top - vs < vslack)
7524            vs = top - vslack;
7525        if (bottom - vs > vspace - vslack)
7526            vs = bottom - (vspace - vslack);
7527        if (ht - vs < vspace)
7528            vs = ht - vspace;
7529        if (0 - vs > 0)
7530            vs = 0;
7531
7532        if (grav != 0) {
7533            if (x - hs < hslack) {
7534                hs = x - hslack;
7535            }
7536            if (x - hs > hspace - hslack) {
7537                hs = x - (hspace - hslack);
7538            }
7539        }
7540
7541        if (grav < 0) {
7542            if (left - hs > 0)
7543                hs = left;
7544            if (right - hs < hspace)
7545                hs = right - hspace;
7546        } else if (grav > 0) {
7547            if (right - hs < hspace)
7548                hs = right - hspace;
7549            if (left - hs > 0)
7550                hs = left;
7551        } else /* grav == 0 */ {
7552            if (right - left <= hspace) {
7553                /*
7554                 * If the entire text fits, center it exactly.
7555                 */
7556                hs = left - (hspace - (right - left)) / 2;
7557            } else if (x > right - hslack) {
7558                /*
7559                 * If we are near the right edge, keep the right edge
7560                 * at the edge of the view.
7561                 */
7562                hs = right - hspace;
7563            } else if (x < left + hslack) {
7564                /*
7565                 * If we are near the left edge, keep the left edge
7566                 * at the edge of the view.
7567                 */
7568                hs = left;
7569            } else if (left > hs) {
7570                /*
7571                 * Is there whitespace visible at the left?  Fix it if so.
7572                 */
7573                hs = left;
7574            } else if (right < hs + hspace) {
7575                /*
7576                 * Is there whitespace visible at the right?  Fix it if so.
7577                 */
7578                hs = right - hspace;
7579            } else {
7580                /*
7581                 * Otherwise, float as needed.
7582                 */
7583                if (x - hs < hslack) {
7584                    hs = x - hslack;
7585                }
7586                if (x - hs > hspace - hslack) {
7587                    hs = x - (hspace - hslack);
7588                }
7589            }
7590        }
7591
7592        if (hs != mScrollX || vs != mScrollY) {
7593            if (mScroller == null) {
7594                scrollTo(hs, vs);
7595            } else {
7596                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
7597                int dx = hs - mScrollX;
7598                int dy = vs - mScrollY;
7599
7600                if (duration > ANIMATED_SCROLL_GAP) {
7601                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
7602                    awakenScrollBars(mScroller.getDuration());
7603                    invalidate();
7604                } else {
7605                    if (!mScroller.isFinished()) {
7606                        mScroller.abortAnimation();
7607                    }
7608
7609                    scrollBy(dx, dy);
7610                }
7611
7612                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
7613            }
7614
7615            changed = true;
7616        }
7617
7618        if (isFocused()) {
7619            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
7620            // requestRectangleOnScreen() is in terms of content coordinates.
7621
7622            // The offsets here are to ensure the rectangle we are using is
7623            // within our view bounds, in case the cursor is on the far left
7624            // or right.  If it isn't withing the bounds, then this request
7625            // will be ignored.
7626            if (mTempRect == null) mTempRect = new Rect();
7627            mTempRect.set(x - 2, top, x + 2, bottom);
7628            getInterestingRect(mTempRect, line);
7629            mTempRect.offset(mScrollX, mScrollY);
7630
7631            if (requestRectangleOnScreen(mTempRect)) {
7632                changed = true;
7633            }
7634        }
7635
7636        return changed;
7637    }
7638
7639    /**
7640     * Move the cursor, if needed, so that it is at an offset that is visible
7641     * to the user.  This will not move the cursor if it represents more than
7642     * one character (a selection range).  This will only work if the
7643     * TextView contains spannable text; otherwise it will do nothing.
7644     *
7645     * @return True if the cursor was actually moved, false otherwise.
7646     */
7647    public boolean moveCursorToVisibleOffset() {
7648        if (!(mText instanceof Spannable)) {
7649            return false;
7650        }
7651        int start = getSelectionStart();
7652        int end = getSelectionEnd();
7653        if (start != end) {
7654            return false;
7655        }
7656
7657        // First: make sure the line is visible on screen:
7658
7659        int line = mLayout.getLineForOffset(start);
7660
7661        final int top = mLayout.getLineTop(line);
7662        final int bottom = mLayout.getLineTop(line + 1);
7663        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7664        int vslack = (bottom - top) / 2;
7665        if (vslack > vspace / 4)
7666            vslack = vspace / 4;
7667        final int vs = mScrollY;
7668
7669        if (top < (vs+vslack)) {
7670            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
7671        } else if (bottom > (vspace+vs-vslack)) {
7672            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
7673        }
7674
7675        // Next: make sure the character is visible on screen:
7676
7677        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7678        final int hs = mScrollX;
7679        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
7680        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
7681
7682        // line might contain bidirectional text
7683        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
7684        final int highChar = leftChar > rightChar ? leftChar : rightChar;
7685
7686        int newStart = start;
7687        if (newStart < lowChar) {
7688            newStart = lowChar;
7689        } else if (newStart > highChar) {
7690            newStart = highChar;
7691        }
7692
7693        if (newStart != start) {
7694            Selection.setSelection((Spannable)mText, newStart);
7695            return true;
7696        }
7697
7698        return false;
7699    }
7700
7701    @Override
7702    public void computeScroll() {
7703        if (mScroller != null) {
7704            if (mScroller.computeScrollOffset()) {
7705                mScrollX = mScroller.getCurrX();
7706                mScrollY = mScroller.getCurrY();
7707                invalidateParentCaches();
7708                postInvalidate();  // So we draw again
7709            }
7710        }
7711    }
7712
7713    private void getInterestingRect(Rect r, int line) {
7714        convertFromViewportToContentCoordinates(r);
7715
7716        // Rectangle can can be expanded on first and last line to take
7717        // padding into account.
7718        // TODO Take left/right padding into account too?
7719        if (line == 0) r.top -= getExtendedPaddingTop();
7720        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
7721    }
7722
7723    private void convertFromViewportToContentCoordinates(Rect r) {
7724        final int horizontalOffset = viewportToContentHorizontalOffset();
7725        r.left += horizontalOffset;
7726        r.right += horizontalOffset;
7727
7728        final int verticalOffset = viewportToContentVerticalOffset();
7729        r.top += verticalOffset;
7730        r.bottom += verticalOffset;
7731    }
7732
7733    int viewportToContentHorizontalOffset() {
7734        return getCompoundPaddingLeft() - mScrollX;
7735    }
7736
7737    int viewportToContentVerticalOffset() {
7738        int offset = getExtendedPaddingTop() - mScrollY;
7739        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
7740            offset += getVerticalOffset(false);
7741        }
7742        return offset;
7743    }
7744
7745    @Override
7746    public void debug(int depth) {
7747        super.debug(depth);
7748
7749        String output = debugIndent(depth);
7750        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
7751                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
7752                + "} ";
7753
7754        if (mText != null) {
7755
7756            output += "mText=\"" + mText + "\" ";
7757            if (mLayout != null) {
7758                output += "mLayout width=" + mLayout.getWidth()
7759                        + " height=" + mLayout.getHeight();
7760            }
7761        } else {
7762            output += "mText=NULL";
7763        }
7764        Log.d(VIEW_LOG_TAG, output);
7765    }
7766
7767    /**
7768     * Convenience for {@link Selection#getSelectionStart}.
7769     */
7770    @ViewDebug.ExportedProperty(category = "text")
7771    public int getSelectionStart() {
7772        return Selection.getSelectionStart(getText());
7773    }
7774
7775    /**
7776     * Convenience for {@link Selection#getSelectionEnd}.
7777     */
7778    @ViewDebug.ExportedProperty(category = "text")
7779    public int getSelectionEnd() {
7780        return Selection.getSelectionEnd(getText());
7781    }
7782
7783    /**
7784     * Return true iff there is a selection inside this text view.
7785     */
7786    public boolean hasSelection() {
7787        final int selectionStart = getSelectionStart();
7788        final int selectionEnd = getSelectionEnd();
7789
7790        return selectionStart >= 0 && selectionStart != selectionEnd;
7791    }
7792
7793    String getSelectedText() {
7794        if (!hasSelection()) {
7795            return null;
7796        }
7797
7798        final int start = getSelectionStart();
7799        final int end = getSelectionEnd();
7800        return String.valueOf(
7801                start > end ? mText.subSequence(end, start) : mText.subSequence(start, end));
7802    }
7803
7804    /**
7805     * Sets the properties of this field (lines, horizontally scrolling,
7806     * transformation method) to be for a single-line input.
7807     *
7808     * @attr ref android.R.styleable#TextView_singleLine
7809     */
7810    public void setSingleLine() {
7811        setSingleLine(true);
7812    }
7813
7814    /**
7815     * Sets the properties of this field to transform input to ALL CAPS
7816     * display. This may use a "small caps" formatting if available.
7817     * This setting will be ignored if this field is editable or selectable.
7818     *
7819     * This call replaces the current transformation method. Disabling this
7820     * will not necessarily restore the previous behavior from before this
7821     * was enabled.
7822     *
7823     * @see #setTransformationMethod(TransformationMethod)
7824     * @attr ref android.R.styleable#TextView_textAllCaps
7825     */
7826    public void setAllCaps(boolean allCaps) {
7827        if (allCaps) {
7828            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
7829        } else {
7830            setTransformationMethod(null);
7831        }
7832    }
7833
7834    /**
7835     * If true, sets the properties of this field (number of lines, horizontally scrolling,
7836     * transformation method) to be for a single-line input; if false, restores these to the default
7837     * conditions.
7838     *
7839     * Note that the default conditions are not necessarily those that were in effect prior this
7840     * method, and you may want to reset these properties to your custom values.
7841     *
7842     * @attr ref android.R.styleable#TextView_singleLine
7843     */
7844    @android.view.RemotableViewMethod
7845    public void setSingleLine(boolean singleLine) {
7846        // Could be used, but may break backward compatibility.
7847        // if (mSingleLine == singleLine) return;
7848        setInputTypeSingleLine(singleLine);
7849        applySingleLine(singleLine, true, true);
7850    }
7851
7852    /**
7853     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
7854     * @param singleLine
7855     */
7856    private void setInputTypeSingleLine(boolean singleLine) {
7857        if (mEditor != null &&
7858                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
7859            if (singleLine) {
7860                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7861            } else {
7862                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7863            }
7864        }
7865    }
7866
7867    private void applySingleLine(boolean singleLine, boolean applyTransformation,
7868            boolean changeMaxLines) {
7869        mSingleLine = singleLine;
7870        if (singleLine) {
7871            setLines(1);
7872            setHorizontallyScrolling(true);
7873            if (applyTransformation) {
7874                setTransformationMethod(SingleLineTransformationMethod.getInstance());
7875            }
7876        } else {
7877            if (changeMaxLines) {
7878                setMaxLines(Integer.MAX_VALUE);
7879            }
7880            setHorizontallyScrolling(false);
7881            if (applyTransformation) {
7882                setTransformationMethod(null);
7883            }
7884        }
7885    }
7886
7887    /**
7888     * Causes words in the text that are longer than the view's width
7889     * to be ellipsized instead of broken in the middle.  You may also
7890     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
7891     * to constrain the text to a single line.  Use <code>null</code>
7892     * to turn off ellipsizing.
7893     *
7894     * If {@link #setMaxLines} has been used to set two or more lines,
7895     * only {@link android.text.TextUtils.TruncateAt#END} and
7896     * {@link android.text.TextUtils.TruncateAt#MARQUEE} are supported
7897     * (other ellipsizing types will not do anything).
7898     *
7899     * @attr ref android.R.styleable#TextView_ellipsize
7900     */
7901    public void setEllipsize(TextUtils.TruncateAt where) {
7902        // TruncateAt is an enum. != comparison is ok between these singleton objects.
7903        if (mEllipsize != where) {
7904            mEllipsize = where;
7905
7906            if (mLayout != null) {
7907                nullLayouts();
7908                requestLayout();
7909                invalidate();
7910            }
7911        }
7912    }
7913
7914    /**
7915     * Sets how many times to repeat the marquee animation. Only applied if the
7916     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
7917     *
7918     * @see #getMarqueeRepeatLimit()
7919     *
7920     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7921     */
7922    public void setMarqueeRepeatLimit(int marqueeLimit) {
7923        mMarqueeRepeatLimit = marqueeLimit;
7924    }
7925
7926    /**
7927     * Gets the number of times the marquee animation is repeated. Only meaningful if the
7928     * TextView has marquee enabled.
7929     *
7930     * @return the number of times the marquee animation is repeated. -1 if the animation
7931     * repeats indefinitely
7932     *
7933     * @see #setMarqueeRepeatLimit(int)
7934     *
7935     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7936     */
7937    public int getMarqueeRepeatLimit() {
7938        return mMarqueeRepeatLimit;
7939    }
7940
7941    /**
7942     * Returns where, if anywhere, words that are longer than the view
7943     * is wide should be ellipsized.
7944     */
7945    @ViewDebug.ExportedProperty
7946    public TextUtils.TruncateAt getEllipsize() {
7947        return mEllipsize;
7948    }
7949
7950    /**
7951     * Set the TextView so that when it takes focus, all the text is
7952     * selected.
7953     *
7954     * @attr ref android.R.styleable#TextView_selectAllOnFocus
7955     */
7956    @android.view.RemotableViewMethod
7957    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
7958        createEditorIfNeeded();
7959        mEditor.mSelectAllOnFocus = selectAllOnFocus;
7960
7961        if (selectAllOnFocus && !(mText instanceof Spannable)) {
7962            setText(mText, BufferType.SPANNABLE);
7963        }
7964    }
7965
7966    /**
7967     * Set whether the cursor is visible. The default is true. Note that this property only
7968     * makes sense for editable TextView.
7969     *
7970     * @see #isCursorVisible()
7971     *
7972     * @attr ref android.R.styleable#TextView_cursorVisible
7973     */
7974    @android.view.RemotableViewMethod
7975    public void setCursorVisible(boolean visible) {
7976        if (visible && mEditor == null) return; // visible is the default value with no edit data
7977        createEditorIfNeeded();
7978        if (mEditor.mCursorVisible != visible) {
7979            mEditor.mCursorVisible = visible;
7980            invalidate();
7981
7982            mEditor.makeBlink();
7983
7984            // InsertionPointCursorController depends on mCursorVisible
7985            mEditor.prepareCursorControllers();
7986        }
7987    }
7988
7989    /**
7990     * @return whether or not the cursor is visible (assuming this TextView is editable)
7991     *
7992     * @see #setCursorVisible(boolean)
7993     *
7994     * @attr ref android.R.styleable#TextView_cursorVisible
7995     */
7996    public boolean isCursorVisible() {
7997        // true is the default value
7998        return mEditor == null ? true : mEditor.mCursorVisible;
7999    }
8000
8001    private boolean canMarquee() {
8002        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
8003        return width > 0 && (mLayout.getLineWidth(0) > width ||
8004                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
8005                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
8006    }
8007
8008    private void startMarquee() {
8009        // Do not ellipsize EditText
8010        if (getKeyListener() != null) return;
8011
8012        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
8013            return;
8014        }
8015
8016        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
8017                getLineCount() == 1 && canMarquee()) {
8018
8019            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8020                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
8021                final Layout tmp = mLayout;
8022                mLayout = mSavedMarqueeModeLayout;
8023                mSavedMarqueeModeLayout = tmp;
8024                setHorizontalFadingEdgeEnabled(true);
8025                requestLayout();
8026                invalidate();
8027            }
8028
8029            if (mMarquee == null) mMarquee = new Marquee(this);
8030            mMarquee.start(mMarqueeRepeatLimit);
8031        }
8032    }
8033
8034    private void stopMarquee() {
8035        if (mMarquee != null && !mMarquee.isStopped()) {
8036            mMarquee.stop();
8037        }
8038
8039        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
8040            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
8041            final Layout tmp = mSavedMarqueeModeLayout;
8042            mSavedMarqueeModeLayout = mLayout;
8043            mLayout = tmp;
8044            setHorizontalFadingEdgeEnabled(false);
8045            requestLayout();
8046            invalidate();
8047        }
8048    }
8049
8050    private void startStopMarquee(boolean start) {
8051        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8052            if (start) {
8053                startMarquee();
8054            } else {
8055                stopMarquee();
8056            }
8057        }
8058    }
8059
8060    /**
8061     * This method is called when the text is changed, in case any subclasses
8062     * would like to know.
8063     *
8064     * Within <code>text</code>, the <code>lengthAfter</code> characters
8065     * beginning at <code>start</code> have just replaced old text that had
8066     * length <code>lengthBefore</code>. It is an error to attempt to make
8067     * changes to <code>text</code> from this callback.
8068     *
8069     * @param text The text the TextView is displaying
8070     * @param start The offset of the start of the range of the text that was
8071     * modified
8072     * @param lengthBefore The length of the former text that has been replaced
8073     * @param lengthAfter The length of the replacement modified text
8074     */
8075    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
8076        // intentionally empty, template pattern method can be overridden by subclasses
8077    }
8078
8079    /**
8080     * This method is called when the selection has changed, in case any
8081     * subclasses would like to know.
8082     *
8083     * @param selStart The new selection start location.
8084     * @param selEnd The new selection end location.
8085     */
8086    protected void onSelectionChanged(int selStart, int selEnd) {
8087        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
8088    }
8089
8090    /**
8091     * Adds a TextWatcher to the list of those whose methods are called
8092     * whenever this TextView's text changes.
8093     * <p>
8094     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
8095     * not called after {@link #setText} calls.  Now, doing {@link #setText}
8096     * if there are any text changed listeners forces the buffer type to
8097     * Editable if it would not otherwise be and does call this method.
8098     */
8099    public void addTextChangedListener(TextWatcher watcher) {
8100        if (mListeners == null) {
8101            mListeners = new ArrayList<TextWatcher>();
8102        }
8103
8104        mListeners.add(watcher);
8105    }
8106
8107    /**
8108     * Removes the specified TextWatcher from the list of those whose
8109     * methods are called
8110     * whenever this TextView's text changes.
8111     */
8112    public void removeTextChangedListener(TextWatcher watcher) {
8113        if (mListeners != null) {
8114            int i = mListeners.indexOf(watcher);
8115
8116            if (i >= 0) {
8117                mListeners.remove(i);
8118            }
8119        }
8120    }
8121
8122    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
8123        if (mListeners != null) {
8124            final ArrayList<TextWatcher> list = mListeners;
8125            final int count = list.size();
8126            for (int i = 0; i < count; i++) {
8127                list.get(i).beforeTextChanged(text, start, before, after);
8128            }
8129        }
8130
8131        // The spans that are inside or intersect the modified region no longer make sense
8132        removeIntersectingNonAdjacentSpans(start, start + before, SpellCheckSpan.class);
8133        removeIntersectingNonAdjacentSpans(start, start + before, SuggestionSpan.class);
8134    }
8135
8136    // Removes all spans that are inside or actually overlap the start..end range
8137    private <T> void removeIntersectingNonAdjacentSpans(int start, int end, Class<T> type) {
8138        if (!(mText instanceof Editable)) return;
8139        Editable text = (Editable) mText;
8140
8141        T[] spans = text.getSpans(start, end, type);
8142        final int length = spans.length;
8143        for (int i = 0; i < length; i++) {
8144            final int spanStart = text.getSpanStart(spans[i]);
8145            final int spanEnd = text.getSpanEnd(spans[i]);
8146            if (spanEnd == start || spanStart == end) break;
8147            text.removeSpan(spans[i]);
8148        }
8149    }
8150
8151    void removeAdjacentSuggestionSpans(final int pos) {
8152        if (!(mText instanceof Editable)) return;
8153        final Editable text = (Editable) mText;
8154
8155        final SuggestionSpan[] spans = text.getSpans(pos, pos, SuggestionSpan.class);
8156        final int length = spans.length;
8157        for (int i = 0; i < length; i++) {
8158            final int spanStart = text.getSpanStart(spans[i]);
8159            final int spanEnd = text.getSpanEnd(spans[i]);
8160            if (spanEnd == pos || spanStart == pos) {
8161                if (SpellChecker.haveWordBoundariesChanged(text, pos, pos, spanStart, spanEnd)) {
8162                    text.removeSpan(spans[i]);
8163                }
8164            }
8165        }
8166    }
8167
8168    /**
8169     * Not private so it can be called from an inner class without going
8170     * through a thunk.
8171     */
8172    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
8173        if (mListeners != null) {
8174            final ArrayList<TextWatcher> list = mListeners;
8175            final int count = list.size();
8176            for (int i = 0; i < count; i++) {
8177                list.get(i).onTextChanged(text, start, before, after);
8178            }
8179        }
8180
8181        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
8182    }
8183
8184    /**
8185     * Not private so it can be called from an inner class without going
8186     * through a thunk.
8187     */
8188    void sendAfterTextChanged(Editable text) {
8189        if (mListeners != null) {
8190            final ArrayList<TextWatcher> list = mListeners;
8191            final int count = list.size();
8192            for (int i = 0; i < count; i++) {
8193                list.get(i).afterTextChanged(text);
8194            }
8195        }
8196        hideErrorIfUnchanged();
8197    }
8198
8199    void updateAfterEdit() {
8200        invalidate();
8201        int curs = getSelectionStart();
8202
8203        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
8204            registerForPreDraw();
8205        }
8206
8207        checkForResize();
8208
8209        if (curs >= 0) {
8210            mHighlightPathBogus = true;
8211            if (mEditor != null) mEditor.makeBlink();
8212            bringPointIntoView(curs);
8213        }
8214    }
8215
8216    /**
8217     * Not private so it can be called from an inner class without going
8218     * through a thunk.
8219     */
8220    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
8221        sLastCutCopyOrTextChangedTime = 0;
8222
8223        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8224        if (ims == null || ims.mBatchEditNesting == 0) {
8225            updateAfterEdit();
8226        }
8227        if (ims != null) {
8228            ims.mContentChanged = true;
8229            if (ims.mChangedStart < 0) {
8230                ims.mChangedStart = start;
8231                ims.mChangedEnd = start+before;
8232            } else {
8233                ims.mChangedStart = Math.min(ims.mChangedStart, start);
8234                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
8235            }
8236            ims.mChangedDelta += after-before;
8237        }
8238        resetErrorChangedFlag();
8239        sendOnTextChanged(buffer, start, before, after);
8240        onTextChanged(buffer, start, before, after);
8241    }
8242
8243    /**
8244     * Not private so it can be called from an inner class without going
8245     * through a thunk.
8246     */
8247    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
8248        // XXX Make the start and end move together if this ends up
8249        // spending too much time invalidating.
8250
8251        boolean selChanged = false;
8252        int newSelStart=-1, newSelEnd=-1;
8253
8254        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8255
8256        if (what == Selection.SELECTION_END) {
8257            selChanged = true;
8258            newSelEnd = newStart;
8259
8260            if (oldStart >= 0 || newStart >= 0) {
8261                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
8262                checkForResize();
8263                registerForPreDraw();
8264                if (mEditor != null) mEditor.makeBlink();
8265            }
8266        }
8267
8268        if (what == Selection.SELECTION_START) {
8269            selChanged = true;
8270            newSelStart = newStart;
8271
8272            if (oldStart >= 0 || newStart >= 0) {
8273                int end = Selection.getSelectionEnd(buf);
8274                invalidateCursor(end, oldStart, newStart);
8275            }
8276        }
8277
8278        if (selChanged) {
8279            mHighlightPathBogus = true;
8280            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
8281
8282            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
8283                if (newSelStart < 0) {
8284                    newSelStart = Selection.getSelectionStart(buf);
8285                }
8286                if (newSelEnd < 0) {
8287                    newSelEnd = Selection.getSelectionEnd(buf);
8288                }
8289
8290                if (mEditor != null) {
8291                    mEditor.refreshTextActionMode();
8292                    if (!hasSelection() && mEditor.mTextActionMode == null && hasTransientState()) {
8293                        // User generated selection has been removed.
8294                        setHasTransientState(false);
8295                    }
8296                }
8297                onSelectionChanged(newSelStart, newSelEnd);
8298            }
8299        }
8300
8301        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
8302                what instanceof CharacterStyle) {
8303            if (ims == null || ims.mBatchEditNesting == 0) {
8304                invalidate();
8305                mHighlightPathBogus = true;
8306                checkForResize();
8307            } else {
8308                ims.mContentChanged = true;
8309            }
8310            if (mEditor != null) {
8311                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
8312                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
8313                mEditor.invalidateHandlesAndActionMode();
8314            }
8315        }
8316
8317        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
8318            mHighlightPathBogus = true;
8319            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
8320                ims.mSelectionModeChanged = true;
8321            }
8322
8323            if (Selection.getSelectionStart(buf) >= 0) {
8324                if (ims == null || ims.mBatchEditNesting == 0) {
8325                    invalidateCursor();
8326                } else {
8327                    ims.mCursorChanged = true;
8328                }
8329            }
8330        }
8331
8332        if (what instanceof ParcelableSpan) {
8333            // If this is a span that can be sent to a remote process,
8334            // the current extract editor would be interested in it.
8335            if (ims != null && ims.mExtractedTextRequest != null) {
8336                if (ims.mBatchEditNesting != 0) {
8337                    if (oldStart >= 0) {
8338                        if (ims.mChangedStart > oldStart) {
8339                            ims.mChangedStart = oldStart;
8340                        }
8341                        if (ims.mChangedStart > oldEnd) {
8342                            ims.mChangedStart = oldEnd;
8343                        }
8344                    }
8345                    if (newStart >= 0) {
8346                        if (ims.mChangedStart > newStart) {
8347                            ims.mChangedStart = newStart;
8348                        }
8349                        if (ims.mChangedStart > newEnd) {
8350                            ims.mChangedStart = newEnd;
8351                        }
8352                    }
8353                } else {
8354                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
8355                            + oldStart + "-" + oldEnd + ","
8356                            + newStart + "-" + newEnd + " " + what);
8357                    ims.mContentChanged = true;
8358                }
8359            }
8360        }
8361
8362        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
8363                what instanceof SpellCheckSpan) {
8364            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
8365        }
8366    }
8367
8368    @Override
8369    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
8370        if (isTemporarilyDetached()) {
8371            // If we are temporarily in the detach state, then do nothing.
8372            super.onFocusChanged(focused, direction, previouslyFocusedRect);
8373            return;
8374        }
8375
8376        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
8377
8378        if (focused) {
8379            if (mText instanceof Spannable) {
8380                Spannable sp = (Spannable) mText;
8381                MetaKeyKeyListener.resetMetaState(sp);
8382            }
8383        }
8384
8385        startStopMarquee(focused);
8386
8387        if (mTransformation != null) {
8388            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
8389        }
8390
8391        super.onFocusChanged(focused, direction, previouslyFocusedRect);
8392    }
8393
8394    @Override
8395    public void onWindowFocusChanged(boolean hasWindowFocus) {
8396        super.onWindowFocusChanged(hasWindowFocus);
8397
8398        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
8399
8400        startStopMarquee(hasWindowFocus);
8401    }
8402
8403    @Override
8404    protected void onVisibilityChanged(View changedView, int visibility) {
8405        super.onVisibilityChanged(changedView, visibility);
8406        if (mEditor != null && visibility != VISIBLE) {
8407            mEditor.hideCursorAndSpanControllers();
8408            stopTextActionMode();
8409        }
8410    }
8411
8412    /**
8413     * Use {@link BaseInputConnection#removeComposingSpans
8414     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
8415     * state from this text view.
8416     */
8417    public void clearComposingText() {
8418        if (mText instanceof Spannable) {
8419            BaseInputConnection.removeComposingSpans((Spannable)mText);
8420        }
8421    }
8422
8423    @Override
8424    public void setSelected(boolean selected) {
8425        boolean wasSelected = isSelected();
8426
8427        super.setSelected(selected);
8428
8429        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8430            if (selected) {
8431                startMarquee();
8432            } else {
8433                stopMarquee();
8434            }
8435        }
8436    }
8437
8438    @Override
8439    public boolean onTouchEvent(MotionEvent event) {
8440        final int action = event.getActionMasked();
8441        if (mEditor != null) {
8442            mEditor.onTouchEvent(event);
8443
8444            if (mEditor.mSelectionModifierCursorController != null &&
8445                    mEditor.mSelectionModifierCursorController.isDragAcceleratorActive()) {
8446                return true;
8447            }
8448        }
8449
8450        final boolean superResult = super.onTouchEvent(event);
8451
8452        /*
8453         * Don't handle the release after a long press, because it will move the selection away from
8454         * whatever the menu action was trying to affect. If the long press should have triggered an
8455         * insertion action mode, we can now actually show it.
8456         */
8457        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
8458            mEditor.mDiscardNextActionUp = false;
8459
8460            if (mEditor.mIsInsertionActionModeStartPending) {
8461                mEditor.startInsertionActionMode();
8462                mEditor.mIsInsertionActionModeStartPending = false;
8463            }
8464            return superResult;
8465        }
8466
8467        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
8468                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
8469
8470         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
8471                && mText instanceof Spannable && mLayout != null) {
8472            boolean handled = false;
8473
8474            if (mMovement != null) {
8475                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
8476            }
8477
8478            final boolean textIsSelectable = isTextSelectable();
8479            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
8480                // The LinkMovementMethod which should handle taps on links has not been installed
8481                // on non editable text that support text selection.
8482                // We reproduce its behavior here to open links for these.
8483                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
8484                        getSelectionEnd(), ClickableSpan.class);
8485
8486                if (links.length > 0) {
8487                    links[0].onClick(this);
8488                    handled = true;
8489                }
8490            }
8491
8492            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
8493                // Show the IME, except when selecting in read-only text.
8494                final InputMethodManager imm = InputMethodManager.peekInstance();
8495                viewClicked(imm);
8496                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
8497                    handled |= imm != null && imm.showSoftInput(this, 0);
8498                }
8499
8500                // The above condition ensures that the mEditor is not null
8501                mEditor.onTouchUpEvent(event);
8502
8503                handled = true;
8504            }
8505
8506            if (handled) {
8507                return true;
8508            }
8509        }
8510
8511        return superResult;
8512    }
8513
8514    @Override
8515    public boolean onGenericMotionEvent(MotionEvent event) {
8516        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8517            try {
8518                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
8519                    return true;
8520                }
8521            } catch (AbstractMethodError ex) {
8522                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
8523                // Ignore its absence in case third party applications implemented the
8524                // interface directly.
8525            }
8526        }
8527        return super.onGenericMotionEvent(event);
8528    }
8529
8530    @Override
8531    protected void onCreateContextMenu(ContextMenu menu) {
8532        if (mEditor != null) {
8533            mEditor.onCreateContextMenu(menu);
8534        }
8535    }
8536
8537    @Override
8538    public boolean showContextMenu() {
8539        if (mEditor != null) {
8540            mEditor.setContextMenuAnchor(Float.NaN, Float.NaN);
8541        }
8542        return super.showContextMenu();
8543    }
8544
8545    @Override
8546    public boolean showContextMenu(float x, float y) {
8547        if (mEditor != null) {
8548            mEditor.setContextMenuAnchor(x, y);
8549        }
8550        return super.showContextMenu(x, y);
8551    }
8552
8553    /**
8554     * @return True iff this TextView contains a text that can be edited, or if this is
8555     * a selectable TextView.
8556     */
8557    boolean isTextEditable() {
8558        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
8559    }
8560
8561    /**
8562     * Returns true, only while processing a touch gesture, if the initial
8563     * touch down event caused focus to move to the text view and as a result
8564     * its selection changed.  Only valid while processing the touch gesture
8565     * of interest, in an editable text view.
8566     */
8567    public boolean didTouchFocusSelect() {
8568        return mEditor != null && mEditor.mTouchFocusSelected;
8569    }
8570
8571    @Override
8572    public void cancelLongPress() {
8573        super.cancelLongPress();
8574        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
8575    }
8576
8577    @Override
8578    public boolean onTrackballEvent(MotionEvent event) {
8579        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8580            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
8581                return true;
8582            }
8583        }
8584
8585        return super.onTrackballEvent(event);
8586    }
8587
8588    public void setScroller(Scroller s) {
8589        mScroller = s;
8590    }
8591
8592    @Override
8593    protected float getLeftFadingEdgeStrength() {
8594        if (isMarqueeFadeEnabled() && mMarquee != null && !mMarquee.isStopped()) {
8595            final Marquee marquee = mMarquee;
8596            if (marquee.shouldDrawLeftFade()) {
8597                return getHorizontalFadingEdgeStrength(marquee.getScroll(), 0.0f);
8598            } else {
8599                return 0.0f;
8600            }
8601        } else if (getLineCount() == 1) {
8602            final float lineLeft = getLayout().getLineLeft(0);
8603            if(lineLeft > mScrollX) return 0.0f;
8604            return getHorizontalFadingEdgeStrength(mScrollX, lineLeft);
8605        }
8606        return super.getLeftFadingEdgeStrength();
8607    }
8608
8609    @Override
8610    protected float getRightFadingEdgeStrength() {
8611        if (isMarqueeFadeEnabled() && mMarquee != null && !mMarquee.isStopped()) {
8612            final Marquee marquee = mMarquee;
8613            return getHorizontalFadingEdgeStrength(marquee.getMaxFadeScroll(), marquee.getScroll());
8614        } else if (getLineCount() == 1) {
8615            final float rightEdge = mScrollX + (getWidth() - getCompoundPaddingLeft() -
8616                    getCompoundPaddingRight());
8617            final float lineRight = getLayout().getLineRight(0);
8618            if(lineRight < rightEdge) return 0.0f;
8619            return getHorizontalFadingEdgeStrength(rightEdge, lineRight);
8620        }
8621        return super.getRightFadingEdgeStrength();
8622    }
8623
8624    /**
8625     * Calculates the fading edge strength as the ratio of the distance between two
8626     * horizontal positions to {@link View#getHorizontalFadingEdgeLength()}. Uses the absolute
8627     * value for the distance calculation.
8628     *
8629     * @param position1 A horizontal position.
8630     * @param position2 A horizontal position.
8631     * @return Fading edge strength between [0.0f, 1.0f].
8632     */
8633    @FloatRange(from=0.0, to=1.0)
8634    private final float getHorizontalFadingEdgeStrength(float position1, float position2) {
8635        final int horizontalFadingEdgeLength = getHorizontalFadingEdgeLength();
8636        if(horizontalFadingEdgeLength == 0) return 0.0f;
8637        final float diff = Math.abs(position1 - position2);
8638        if(diff > horizontalFadingEdgeLength) return 1.0f;
8639        return diff / horizontalFadingEdgeLength;
8640    }
8641
8642    private final boolean isMarqueeFadeEnabled() {
8643        return mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8644                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
8645    }
8646
8647    @Override
8648    protected int computeHorizontalScrollRange() {
8649        if (mLayout != null) {
8650            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
8651                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
8652        }
8653
8654        return super.computeHorizontalScrollRange();
8655    }
8656
8657    @Override
8658    protected int computeVerticalScrollRange() {
8659        if (mLayout != null)
8660            return mLayout.getHeight();
8661
8662        return super.computeVerticalScrollRange();
8663    }
8664
8665    @Override
8666    protected int computeVerticalScrollExtent() {
8667        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
8668    }
8669
8670    @Override
8671    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
8672        super.findViewsWithText(outViews, searched, flags);
8673        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
8674                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
8675            String searchedLowerCase = searched.toString().toLowerCase();
8676            String textLowerCase = mText.toString().toLowerCase();
8677            if (textLowerCase.contains(searchedLowerCase)) {
8678                outViews.add(this);
8679            }
8680        }
8681    }
8682
8683    public enum BufferType {
8684        NORMAL, SPANNABLE, EDITABLE,
8685    }
8686
8687    /**
8688     * Returns the TextView_textColor attribute from the TypedArray, if set, or
8689     * the TextAppearance_textColor from the TextView_textAppearance attribute,
8690     * if TextView_textColor was not set directly.
8691     *
8692     * @removed
8693     */
8694    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
8695        if (attrs == null) {
8696            // Preserve behavior prior to removal of this API.
8697            throw new NullPointerException();
8698        }
8699
8700        // It's not safe to use this method from apps. The parameter 'attrs'
8701        // must have been obtained using the TextView filter array which is not
8702        // available to the SDK. As such, we grab a default TypedArray with the
8703        // right filter instead here.
8704        final TypedArray a = context.obtainStyledAttributes(R.styleable.TextView);
8705        ColorStateList colors = a.getColorStateList(R.styleable.TextView_textColor);
8706        if (colors == null) {
8707            final int ap = a.getResourceId(R.styleable.TextView_textAppearance, 0);
8708            if (ap != 0) {
8709                final TypedArray appearance = context.obtainStyledAttributes(
8710                        ap, R.styleable.TextAppearance);
8711                colors = appearance.getColorStateList(R.styleable.TextAppearance_textColor);
8712                appearance.recycle();
8713            }
8714        }
8715        a.recycle();
8716
8717        return colors;
8718    }
8719
8720    /**
8721     * Returns the default color from the TextView_textColor attribute from the
8722     * AttributeSet, if set, or the default color from the
8723     * TextAppearance_textColor from the TextView_textAppearance attribute, if
8724     * TextView_textColor was not set directly.
8725     *
8726     * @removed
8727     */
8728    public static int getTextColor(Context context, TypedArray attrs, int def) {
8729        final ColorStateList colors = getTextColors(context, attrs);
8730        if (colors == null) {
8731            return def;
8732        } else {
8733            return colors.getDefaultColor();
8734        }
8735    }
8736
8737    @Override
8738    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
8739        if (event.hasModifiers(KeyEvent.META_CTRL_ON)) {
8740            // Handle Ctrl-only shortcuts.
8741            switch (keyCode) {
8742            case KeyEvent.KEYCODE_A:
8743                if (canSelectText()) {
8744                    return onTextContextMenuItem(ID_SELECT_ALL);
8745                }
8746                break;
8747            case KeyEvent.KEYCODE_Z:
8748                if (canUndo()) {
8749                    return onTextContextMenuItem(ID_UNDO);
8750                }
8751                break;
8752            case KeyEvent.KEYCODE_X:
8753                if (canCut()) {
8754                    return onTextContextMenuItem(ID_CUT);
8755                }
8756                break;
8757            case KeyEvent.KEYCODE_C:
8758                if (canCopy()) {
8759                    return onTextContextMenuItem(ID_COPY);
8760                }
8761                break;
8762            case KeyEvent.KEYCODE_V:
8763                if (canPaste()) {
8764                    return onTextContextMenuItem(ID_PASTE);
8765                }
8766                break;
8767            }
8768        } else if (event.hasModifiers(KeyEvent.META_CTRL_ON | KeyEvent.META_SHIFT_ON)) {
8769            // Handle Ctrl-Shift shortcuts.
8770            switch (keyCode) {
8771                case KeyEvent.KEYCODE_Z:
8772                    if (canRedo()) {
8773                        return onTextContextMenuItem(ID_REDO);
8774                    }
8775                    break;
8776                case KeyEvent.KEYCODE_V:
8777                    if (canPaste()) {
8778                        return onTextContextMenuItem(ID_PASTE_AS_PLAIN_TEXT);
8779                    }
8780            }
8781        }
8782        return super.onKeyShortcut(keyCode, event);
8783    }
8784
8785    /**
8786     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
8787     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
8788     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
8789     * sufficient.
8790     */
8791    boolean canSelectText() {
8792        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
8793    }
8794
8795    /**
8796     * Test based on the <i>intrinsic</i> charateristics of the TextView.
8797     * The text must be spannable and the movement method must allow for arbitary selection.
8798     *
8799     * See also {@link #canSelectText()}.
8800     */
8801    boolean textCanBeSelected() {
8802        // prepareCursorController() relies on this method.
8803        // If you change this condition, make sure prepareCursorController is called anywhere
8804        // the value of this condition might be changed.
8805        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
8806        return isTextEditable() ||
8807                (isTextSelectable() && mText instanceof Spannable && isEnabled());
8808    }
8809
8810    private Locale getTextServicesLocale(boolean allowNullLocale) {
8811        // Start fetching the text services locale asynchronously.
8812        updateTextServicesLocaleAsync();
8813        // If !allowNullLocale and there is no cached text services locale, just return the default
8814        // locale.
8815        return (mCurrentSpellCheckerLocaleCache == null && !allowNullLocale) ? Locale.getDefault()
8816                : mCurrentSpellCheckerLocaleCache;
8817    }
8818
8819    /**
8820     * This is a temporary method. Future versions may support multi-locale text.
8821     * Caveat: This method may not return the latest text services locale, but this should be
8822     * acceptable and it's more important to make this method asynchronous.
8823     *
8824     * @return The locale that should be used for a word iterator
8825     * in this TextView, based on the current spell checker settings,
8826     * the current IME's locale, or the system default locale.
8827     * Please note that a word iterator in this TextView is different from another word iterator
8828     * used by SpellChecker.java of TextView. This method should be used for the former.
8829     * @hide
8830     */
8831    // TODO: Support multi-locale
8832    // TODO: Update the text services locale immediately after the keyboard locale is switched
8833    // by catching intent of keyboard switch event
8834    public Locale getTextServicesLocale() {
8835        return getTextServicesLocale(false /* allowNullLocale */);
8836    }
8837
8838    /**
8839     * @return true if this TextView is specialized for showing and interacting with the extracted
8840     * text in a full-screen input method.
8841     * @hide
8842     */
8843    public boolean isInExtractedMode() {
8844        return false;
8845    }
8846
8847    /**
8848     * This is a temporary method. Future versions may support multi-locale text.
8849     * Caveat: This method may not return the latest spell checker locale, but this should be
8850     * acceptable and it's more important to make this method asynchronous.
8851     *
8852     * @return The locale that should be used for a spell checker in this TextView,
8853     * based on the current spell checker settings, the current IME's locale, or the system default
8854     * locale.
8855     * @hide
8856     */
8857    public Locale getSpellCheckerLocale() {
8858        return getTextServicesLocale(true /* allowNullLocale */);
8859    }
8860
8861    private void updateTextServicesLocaleAsync() {
8862        // AsyncTask.execute() uses a serial executor which means we don't have
8863        // to lock around updateTextServicesLocaleLocked() to prevent it from
8864        // being executed n times in parallel.
8865        AsyncTask.execute(new Runnable() {
8866            @Override
8867            public void run() {
8868                updateTextServicesLocaleLocked();
8869            }
8870        });
8871    }
8872
8873    private void updateTextServicesLocaleLocked() {
8874        final TextServicesManager textServicesManager = (TextServicesManager)
8875                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
8876        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
8877        final Locale locale;
8878        if (subtype != null) {
8879            locale = subtype.getLocaleObject();
8880        } else {
8881            locale = null;
8882        }
8883        mCurrentSpellCheckerLocaleCache = locale;
8884    }
8885
8886    void onLocaleChanged() {
8887        mEditor.onLocaleChanged();
8888    }
8889
8890    /**
8891     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
8892     * Made available to achieve a consistent behavior.
8893     * @hide
8894     */
8895    public WordIterator getWordIterator() {
8896        if (mEditor != null) {
8897            return mEditor.getWordIterator();
8898        } else {
8899            return null;
8900        }
8901    }
8902
8903    /** @hide */
8904    @Override
8905    public void onPopulateAccessibilityEventInternal(AccessibilityEvent event) {
8906        super.onPopulateAccessibilityEventInternal(event);
8907
8908        final CharSequence text = getTextForAccessibility();
8909        if (!TextUtils.isEmpty(text)) {
8910            event.getText().add(text);
8911        }
8912    }
8913
8914    /**
8915     * @return true if the user has explicitly allowed accessibility services
8916     * to speak passwords.
8917     */
8918    private boolean shouldSpeakPasswordsForAccessibility() {
8919        return (Settings.Secure.getIntForUser(mContext.getContentResolver(),
8920                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0,
8921                UserHandle.USER_CURRENT_OR_SELF) == 1);
8922    }
8923
8924    @Override
8925    public CharSequence getAccessibilityClassName() {
8926        return TextView.class.getName();
8927    }
8928
8929    @Override
8930    public void onProvideStructure(ViewStructure structure) {
8931        super.onProvideStructure(structure);
8932        final boolean isPassword = hasPasswordTransformationMethod()
8933                || isPasswordInputType(getInputType());
8934        if (!isPassword) {
8935            if (mLayout == null) {
8936                assumeLayout();
8937            }
8938            Layout layout = mLayout;
8939            final int lineCount = layout.getLineCount();
8940            if (lineCount <= 1) {
8941                // Simple case: this is a single line.
8942                structure.setText(getText(), getSelectionStart(), getSelectionEnd());
8943            } else {
8944                // Complex case: multi-line, could be scrolled or within a scroll container
8945                // so some lines are not visible.
8946                final int[] tmpCords = new int[2];
8947                getLocationInWindow(tmpCords);
8948                final int topWindowLocation = tmpCords[1];
8949                View root = this;
8950                ViewParent viewParent = getParent();
8951                while (viewParent instanceof View) {
8952                    root = (View) viewParent;
8953                    viewParent = root.getParent();
8954                }
8955                final int windowHeight = root.getHeight();
8956                final int topLine;
8957                final int bottomLine;
8958                if (topWindowLocation >= 0) {
8959                    // The top of the view is fully within its window; start text at line 0.
8960                    topLine = getLineAtCoordinateUnclamped(0);
8961                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1);
8962                } else {
8963                    // The top of hte window has scrolled off the top of the window; figure out
8964                    // the starting line for this.
8965                    topLine = getLineAtCoordinateUnclamped(-topWindowLocation);
8966                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1-topWindowLocation);
8967                }
8968                // We want to return some contextual lines above/below the lines that are
8969                // actually visible.
8970                int expandedTopLine = topLine - (bottomLine-topLine)/2;
8971                if (expandedTopLine < 0) {
8972                    expandedTopLine = 0;
8973                }
8974                int expandedBottomLine = bottomLine + (bottomLine-topLine)/2;
8975                if (expandedBottomLine >= lineCount) {
8976                    expandedBottomLine = lineCount-1;
8977                }
8978                // Convert lines into character offsets.
8979                int expandedTopChar = layout.getLineStart(expandedTopLine);
8980                int expandedBottomChar = layout.getLineEnd(expandedBottomLine);
8981                // Take into account selection -- if there is a selection, we need to expand
8982                // the text we are returning to include that selection.
8983                final int selStart = getSelectionStart();
8984                final int selEnd = getSelectionEnd();
8985                if (selStart < selEnd) {
8986                    if (selStart < expandedTopChar) {
8987                        expandedTopChar = selStart;
8988                    }
8989                    if (selEnd > expandedBottomChar) {
8990                        expandedBottomChar = selEnd;
8991                    }
8992                }
8993                // Get the text and trim it to the range we are reporting.
8994                CharSequence text = getText();
8995                if (expandedTopChar > 0 || expandedBottomChar < text.length()) {
8996                    text = text.subSequence(expandedTopChar, expandedBottomChar);
8997                }
8998                structure.setText(text, selStart-expandedTopChar, selEnd-expandedTopChar);
8999                final int[] lineOffsets = new int[bottomLine-topLine+1];
9000                final int[] lineBaselines = new int[bottomLine-topLine+1];
9001                final int baselineOffset = getBaselineOffset();
9002                for (int i=topLine; i<=bottomLine; i++) {
9003                    lineOffsets[i-topLine] = layout.getLineStart(i);
9004                    lineBaselines[i-topLine] = layout.getLineBaseline(i) + baselineOffset;
9005                }
9006                structure.setTextLines(lineOffsets, lineBaselines);
9007            }
9008
9009            // Extract style information that applies to the TextView as a whole.
9010            int style = 0;
9011            int typefaceStyle = getTypefaceStyle();
9012            if ((typefaceStyle & Typeface.BOLD) != 0) {
9013                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9014            }
9015            if ((typefaceStyle & Typeface.ITALIC) != 0) {
9016                style |= AssistStructure.ViewNode.TEXT_STYLE_ITALIC;
9017            }
9018
9019            // Global styles can also be set via TextView.setPaintFlags().
9020            int paintFlags = mTextPaint.getFlags();
9021            if ((paintFlags & Paint.FAKE_BOLD_TEXT_FLAG) != 0) {
9022                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9023            }
9024            if ((paintFlags & Paint.UNDERLINE_TEXT_FLAG) != 0) {
9025                style |= AssistStructure.ViewNode.TEXT_STYLE_UNDERLINE;
9026            }
9027            if ((paintFlags & Paint.STRIKE_THRU_TEXT_FLAG) != 0) {
9028                style |= AssistStructure.ViewNode.TEXT_STYLE_STRIKE_THRU;
9029            }
9030
9031            // TextView does not have its own text background color. A background is either part
9032            // of the View (and can be any drawable) or a BackgroundColorSpan inside the text.
9033            structure.setTextStyle(getTextSize(), getCurrentTextColor(),
9034                    AssistStructure.ViewNode.TEXT_COLOR_UNDEFINED /* bgColor */, style);
9035        }
9036        structure.setHint(getHint());
9037    }
9038
9039    /** @hide */
9040    @Override
9041    public void onInitializeAccessibilityEventInternal(AccessibilityEvent event) {
9042        super.onInitializeAccessibilityEventInternal(event);
9043
9044        final boolean isPassword = hasPasswordTransformationMethod();
9045        event.setPassword(isPassword);
9046
9047        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
9048            event.setFromIndex(Selection.getSelectionStart(mText));
9049            event.setToIndex(Selection.getSelectionEnd(mText));
9050            event.setItemCount(mText.length());
9051        }
9052    }
9053
9054    /** @hide */
9055    @Override
9056    public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
9057        super.onInitializeAccessibilityNodeInfoInternal(info);
9058
9059        final boolean isPassword = hasPasswordTransformationMethod();
9060        info.setPassword(isPassword);
9061        info.setText(getTextForAccessibility());
9062
9063        if (mBufferType == BufferType.EDITABLE) {
9064            info.setEditable(true);
9065            if (isEnabled()) {
9066                info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_SET_TEXT);
9067            }
9068        }
9069
9070        if (mEditor != null) {
9071            info.setInputType(mEditor.mInputType);
9072
9073            if (mEditor.mError != null) {
9074                info.setContentInvalid(true);
9075                info.setError(mEditor.mError);
9076            }
9077        }
9078
9079        if (!TextUtils.isEmpty(mText)) {
9080            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
9081            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
9082            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
9083                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
9084                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
9085                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
9086                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
9087            info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
9088        }
9089
9090        if (isFocused()) {
9091            if (canCopy()) {
9092                info.addAction(AccessibilityNodeInfo.ACTION_COPY);
9093            }
9094            if (canPaste()) {
9095                info.addAction(AccessibilityNodeInfo.ACTION_PASTE);
9096            }
9097            if (canCut()) {
9098                info.addAction(AccessibilityNodeInfo.ACTION_CUT);
9099            }
9100            if (canShare()) {
9101                info.addAction(new AccessibilityNodeInfo.AccessibilityAction(
9102                        ACCESSIBILITY_ACTION_SHARE,
9103                        getResources().getString(com.android.internal.R.string.share)));
9104            }
9105            if (canProcessText()) {  // also implies mEditor is not null.
9106                mEditor.mProcessTextIntentActionsHandler.onInitializeAccessibilityNodeInfo(info);
9107            }
9108        }
9109
9110        // Check for known input filter types.
9111        final int numFilters = mFilters.length;
9112        for (int i = 0; i < numFilters; i++) {
9113            final InputFilter filter = mFilters[i];
9114            if (filter instanceof InputFilter.LengthFilter) {
9115                info.setMaxTextLength(((InputFilter.LengthFilter) filter).getMax());
9116            }
9117        }
9118
9119        if (!isSingleLine()) {
9120            info.setMultiLine(true);
9121        }
9122    }
9123
9124    /**
9125     * Performs an accessibility action after it has been offered to the
9126     * delegate.
9127     *
9128     * @hide
9129     */
9130    @Override
9131    public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
9132        if (mEditor != null
9133                && mEditor.mProcessTextIntentActionsHandler.performAccessibilityAction(action)) {
9134            return true;
9135        }
9136        switch (action) {
9137            case AccessibilityNodeInfo.ACTION_CLICK: {
9138                return performAccessibilityActionClick(arguments);
9139            }
9140            case AccessibilityNodeInfo.ACTION_COPY: {
9141                if (isFocused() && canCopy()) {
9142                    if (onTextContextMenuItem(ID_COPY)) {
9143                        return true;
9144                    }
9145                }
9146            } return false;
9147            case AccessibilityNodeInfo.ACTION_PASTE: {
9148                if (isFocused() && canPaste()) {
9149                    if (onTextContextMenuItem(ID_PASTE)) {
9150                        return true;
9151                    }
9152                }
9153            } return false;
9154            case AccessibilityNodeInfo.ACTION_CUT: {
9155                if (isFocused() && canCut()) {
9156                    if (onTextContextMenuItem(ID_CUT)) {
9157                        return true;
9158                    }
9159                }
9160            } return false;
9161            case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
9162                ensureIterableTextForAccessibilitySelectable();
9163                CharSequence text = getIterableTextForAccessibility();
9164                if (text == null) {
9165                    return false;
9166                }
9167                final int start = (arguments != null) ? arguments.getInt(
9168                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
9169                final int end = (arguments != null) ? arguments.getInt(
9170                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
9171                if ((getSelectionStart() != start || getSelectionEnd() != end)) {
9172                    // No arguments clears the selection.
9173                    if (start == end && end == -1) {
9174                        Selection.removeSelection((Spannable) text);
9175                        return true;
9176                    }
9177                    if (start >= 0 && start <= end && end <= text.length()) {
9178                        Selection.setSelection((Spannable) text, start, end);
9179                        // Make sure selection mode is engaged.
9180                        if (mEditor != null) {
9181                            mEditor.startSelectionActionMode();
9182                        }
9183                        return true;
9184                    }
9185                }
9186            } return false;
9187            case AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY:
9188            case AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY: {
9189                ensureIterableTextForAccessibilitySelectable();
9190                return super.performAccessibilityActionInternal(action, arguments);
9191            }
9192            case ACCESSIBILITY_ACTION_SHARE: {
9193                if (isFocused() && canShare()) {
9194                    if (onTextContextMenuItem(ID_SHARE)) {
9195                        return true;
9196                    }
9197                }
9198            } return false;
9199            case AccessibilityNodeInfo.ACTION_SET_TEXT: {
9200                if (!isEnabled() || (mBufferType != BufferType.EDITABLE)) {
9201                    return false;
9202                }
9203                CharSequence text = (arguments != null) ? arguments.getCharSequence(
9204                        AccessibilityNodeInfo.ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE) : null;
9205                setText(text);
9206                if (mText != null) {
9207                    int updatedTextLength = mText.length();
9208                    if (updatedTextLength > 0) {
9209                        Selection.setSelection((Spannable) mText, updatedTextLength);
9210                    }
9211                }
9212            } return true;
9213            default: {
9214                return super.performAccessibilityActionInternal(action, arguments);
9215            }
9216        }
9217    }
9218
9219    private boolean performAccessibilityActionClick(Bundle arguments) {
9220        boolean handled = false;
9221
9222        if (!isEnabled()) {
9223            return false;
9224        }
9225
9226        if (isClickable() || isLongClickable()) {
9227            // Simulate View.onTouchEvent for an ACTION_UP event
9228            if (isFocusable() && !isFocused()) {
9229                requestFocus();
9230            }
9231
9232            performClick();
9233            handled = true;
9234        }
9235
9236        // Show the IME, except when selecting in read-only text.
9237        if ((mMovement != null || onCheckIsTextEditor()) && hasSpannableText() && mLayout != null
9238                && (isTextEditable() || isTextSelectable()) && isFocused()) {
9239            final InputMethodManager imm = InputMethodManager.peekInstance();
9240            viewClicked(imm);
9241            if (!isTextSelectable() && mEditor.mShowSoftInputOnFocus && imm != null) {
9242                handled |= imm.showSoftInput(this, 0);
9243            }
9244        }
9245
9246        return handled;
9247    }
9248
9249    private boolean hasSpannableText() {
9250        return mText != null && mText instanceof Spannable;
9251    }
9252
9253    /** @hide */
9254    @Override
9255    public void sendAccessibilityEventInternal(int eventType) {
9256        if (eventType == AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED && mEditor != null) {
9257            mEditor.mProcessTextIntentActionsHandler.initializeAccessibilityActions();
9258        }
9259
9260        // Do not send scroll events since first they are not interesting for
9261        // accessibility and second such events a generated too frequently.
9262        // For details see the implementation of bringTextIntoView().
9263        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
9264            return;
9265        }
9266        super.sendAccessibilityEventInternal(eventType);
9267    }
9268
9269    /**
9270     * Returns the text that should be exposed to accessibility services.
9271     * <p>
9272     * This approximates what is displayed visually. If the user has specified
9273     * that accessibility services should speak passwords, this method will
9274     * bypass any password transformation method and return unobscured text.
9275     *
9276     * @return the text that should be exposed to accessibility services, may
9277     *         be {@code null} if no text is set
9278     */
9279    @Nullable
9280    private CharSequence getTextForAccessibility() {
9281        // If the text is empty, we must be showing the hint text.
9282        if (TextUtils.isEmpty(mText)) {
9283            return mHint;
9284        }
9285
9286        // Check whether we need to bypass the transformation
9287        // method and expose unobscured text.
9288        if (hasPasswordTransformationMethod() && shouldSpeakPasswordsForAccessibility()) {
9289            return mText;
9290        }
9291
9292        // Otherwise, speak whatever text is being displayed.
9293        return mTransformed;
9294    }
9295
9296    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
9297            int fromIndex, int removedCount, int addedCount) {
9298        AccessibilityEvent event =
9299                AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
9300        event.setFromIndex(fromIndex);
9301        event.setRemovedCount(removedCount);
9302        event.setAddedCount(addedCount);
9303        event.setBeforeText(beforeText);
9304        sendAccessibilityEventUnchecked(event);
9305    }
9306
9307    /**
9308     * Returns whether this text view is a current input method target.  The
9309     * default implementation just checks with {@link InputMethodManager}.
9310     */
9311    public boolean isInputMethodTarget() {
9312        InputMethodManager imm = InputMethodManager.peekInstance();
9313        return imm != null && imm.isActive(this);
9314    }
9315
9316    static final int ID_SELECT_ALL = android.R.id.selectAll;
9317    static final int ID_UNDO = android.R.id.undo;
9318    static final int ID_REDO = android.R.id.redo;
9319    static final int ID_CUT = android.R.id.cut;
9320    static final int ID_COPY = android.R.id.copy;
9321    static final int ID_PASTE = android.R.id.paste;
9322    static final int ID_SHARE = android.R.id.shareText;
9323    static final int ID_PASTE_AS_PLAIN_TEXT = android.R.id.pasteAsPlainText;
9324    static final int ID_REPLACE = android.R.id.replaceText;
9325
9326    /**
9327     * Called when a context menu option for the text view is selected.  Currently
9328     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
9329     * {@link android.R.id#copy}, {@link android.R.id#paste} or {@link android.R.id#shareText}.
9330     *
9331     * @return true if the context menu item action was performed.
9332     */
9333    public boolean onTextContextMenuItem(int id) {
9334        int min = 0;
9335        int max = mText.length();
9336
9337        if (isFocused()) {
9338            final int selStart = getSelectionStart();
9339            final int selEnd = getSelectionEnd();
9340
9341            min = Math.max(0, Math.min(selStart, selEnd));
9342            max = Math.max(0, Math.max(selStart, selEnd));
9343        }
9344
9345        switch (id) {
9346            case ID_SELECT_ALL:
9347                selectAllText();
9348                return true;
9349
9350            case ID_UNDO:
9351                if (mEditor != null) {
9352                    mEditor.undo();
9353                }
9354                return true;  // Returns true even if nothing was undone.
9355
9356            case ID_REDO:
9357                if (mEditor != null) {
9358                    mEditor.redo();
9359                }
9360                return true;  // Returns true even if nothing was undone.
9361
9362            case ID_PASTE:
9363                paste(min, max, true /* withFormatting */);
9364                return true;
9365
9366            case ID_PASTE_AS_PLAIN_TEXT:
9367                paste(min, max, false /* withFormatting */);
9368                return true;
9369
9370            case ID_CUT:
9371                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9372                deleteText_internal(min, max);
9373                return true;
9374
9375            case ID_COPY:
9376                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9377                stopTextActionMode();
9378                return true;
9379
9380            case ID_REPLACE:
9381                if (mEditor != null) {
9382                    mEditor.replace();
9383                }
9384                return true;
9385
9386            case ID_SHARE:
9387                shareSelectedText();
9388                return true;
9389        }
9390        return false;
9391    }
9392
9393    CharSequence getTransformedText(int start, int end) {
9394        return removeSuggestionSpans(mTransformed.subSequence(start, end));
9395    }
9396
9397    @Override
9398    public boolean performLongClick() {
9399        boolean handled = false;
9400
9401        if (mEditor != null) {
9402            mEditor.mIsBeingLongClicked = true;
9403        }
9404
9405        if (super.performLongClick()) {
9406            handled = true;
9407        }
9408
9409        if (mEditor != null) {
9410            handled |= mEditor.performLongClick(handled);
9411            mEditor.mIsBeingLongClicked = false;
9412        }
9413
9414        if (handled) {
9415            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
9416            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
9417        }
9418
9419        return handled;
9420    }
9421
9422    @Override
9423    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
9424        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
9425        if (mEditor != null) {
9426            mEditor.onScrollChanged();
9427        }
9428    }
9429
9430    /**
9431     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
9432     * by the IME or by the spell checker as the user types. This is done by adding
9433     * {@link SuggestionSpan}s to the text.
9434     *
9435     * When suggestions are enabled (default), this list of suggestions will be displayed when the
9436     * user asks for them on these parts of the text. This value depends on the inputType of this
9437     * TextView.
9438     *
9439     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
9440     *
9441     * In addition, the type variation must be one of
9442     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
9443     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
9444     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
9445     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
9446     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
9447     *
9448     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
9449     *
9450     * @return true if the suggestions popup window is enabled, based on the inputType.
9451     */
9452    public boolean isSuggestionsEnabled() {
9453        if (mEditor == null) return false;
9454        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
9455            return false;
9456        }
9457        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
9458
9459        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
9460        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
9461                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
9462                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
9463                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
9464                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
9465    }
9466
9467    /**
9468     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9469     * selection is initiated in this View.
9470     *
9471     * <p>The standard implementation populates the menu with a subset of Select All, Cut, Copy,
9472     * Paste, Replace and Share actions, depending on what this View supports.
9473     *
9474     * <p>A custom implementation can add new entries in the default menu in its
9475     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, android.view.Menu)}
9476     * method. The default actions can also be removed from the menu using
9477     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9478     * {@link android.R.id#cut}, {@link android.R.id#copy}, {@link android.R.id#paste},
9479     * {@link android.R.id#replaceText} or {@link android.R.id#shareText} ids as parameters.
9480     *
9481     * <p>Returning false from
9482     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, android.view.Menu)}
9483     * will prevent the action mode from being started.
9484     *
9485     * <p>Action click events should be handled by the custom implementation of
9486     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode,
9487     * android.view.MenuItem)}.
9488     *
9489     * <p>Note that text selection mode is not started when a TextView receives focus and the
9490     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
9491     * that case, to allow for quick replacement.
9492     */
9493    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
9494        createEditorIfNeeded();
9495        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
9496    }
9497
9498    /**
9499     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
9500     *
9501     * @return The current custom selection callback.
9502     */
9503    public ActionMode.Callback getCustomSelectionActionModeCallback() {
9504        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
9505    }
9506
9507    /**
9508     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9509     * insertion is initiated in this View.
9510     * The standard implementation populates the menu with a subset of Select All,
9511     * Paste and Replace actions, depending on what this View supports.
9512     *
9513     * <p>A custom implementation can add new entries in the default menu in its
9514     * {@link android.view.ActionMode.Callback#onPrepareActionMode(android.view.ActionMode,
9515     * android.view.Menu)} method. The default actions can also be removed from the menu using
9516     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9517     * {@link android.R.id#paste} or {@link android.R.id#replaceText} ids as parameters.</p>
9518     *
9519     * <p>Returning false from
9520     * {@link android.view.ActionMode.Callback#onCreateActionMode(android.view.ActionMode,
9521     * android.view.Menu)} will prevent the action mode from being started.</p>
9522     *
9523     * <p>Action click events should be handled by the custom implementation of
9524     * {@link android.view.ActionMode.Callback#onActionItemClicked(android.view.ActionMode,
9525     * android.view.MenuItem)}.</p>
9526     *
9527     * <p>Note that text insertion mode is not started when a TextView receives focus and the
9528     * {@link android.R.attr#selectAllOnFocus} flag has been set.</p>
9529     */
9530    public void setCustomInsertionActionModeCallback(ActionMode.Callback actionModeCallback) {
9531        createEditorIfNeeded();
9532        mEditor.mCustomInsertionActionModeCallback = actionModeCallback;
9533    }
9534
9535    /**
9536     * Retrieves the value set in {@link #setCustomInsertionActionModeCallback}. Default is null.
9537     *
9538     * @return The current custom insertion callback.
9539     */
9540    public ActionMode.Callback getCustomInsertionActionModeCallback() {
9541        return mEditor == null ? null : mEditor.mCustomInsertionActionModeCallback;
9542    }
9543
9544    /**
9545     * @hide
9546     */
9547    protected void stopTextActionMode() {
9548        if (mEditor != null) {
9549            mEditor.stopTextActionMode();
9550        }
9551    }
9552
9553    boolean canUndo() {
9554        return mEditor != null && mEditor.canUndo();
9555    }
9556
9557    boolean canRedo() {
9558        return mEditor != null && mEditor.canRedo();
9559    }
9560
9561    boolean canCut() {
9562        if (hasPasswordTransformationMethod()) {
9563            return false;
9564        }
9565
9566        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
9567                mEditor.mKeyListener != null) {
9568            return true;
9569        }
9570
9571        return false;
9572    }
9573
9574    boolean canCopy() {
9575        if (hasPasswordTransformationMethod()) {
9576            return false;
9577        }
9578
9579        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9580            return true;
9581        }
9582
9583        return false;
9584    }
9585
9586    boolean canShare() {
9587        if (!getContext().canStartActivityForResult() || !isDeviceProvisioned()) {
9588            return false;
9589        }
9590        return canCopy();
9591    }
9592
9593    boolean isDeviceProvisioned() {
9594        if (mDeviceProvisionedState == DEVICE_PROVISIONED_UNKNOWN) {
9595            mDeviceProvisionedState = Settings.Global.getInt(
9596                    mContext.getContentResolver(), Settings.Global.DEVICE_PROVISIONED, 0) != 0
9597                    ? DEVICE_PROVISIONED_YES
9598                    : DEVICE_PROVISIONED_NO;
9599        }
9600        return mDeviceProvisionedState == DEVICE_PROVISIONED_YES;
9601    }
9602
9603    boolean canPaste() {
9604        return (mText instanceof Editable &&
9605                mEditor != null && mEditor.mKeyListener != null &&
9606                getSelectionStart() >= 0 &&
9607                getSelectionEnd() >= 0 &&
9608                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
9609                hasPrimaryClip());
9610    }
9611
9612    boolean canProcessText() {
9613        if (getId() == View.NO_ID) {
9614            return false;
9615        }
9616        return canShare();
9617    }
9618
9619    boolean canSelectAllText() {
9620        return canSelectText() && !hasPasswordTransformationMethod()
9621                && !(getSelectionStart() == 0 && getSelectionEnd() == mText.length());
9622    }
9623
9624    boolean selectAllText() {
9625        final int length = mText.length();
9626        Selection.setSelection((Spannable) mText, 0, length);
9627        return length > 0;
9628    }
9629
9630    void replaceSelectionWithText(CharSequence text) {
9631        ((Editable) mText).replace(getSelectionStart(), getSelectionEnd(), text);
9632    }
9633
9634    /**
9635     * Paste clipboard content between min and max positions.
9636     */
9637    private void paste(int min, int max, boolean withFormatting) {
9638        ClipboardManager clipboard =
9639            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
9640        ClipData clip = clipboard.getPrimaryClip();
9641        if (clip != null) {
9642            boolean didFirst = false;
9643            for (int i=0; i<clip.getItemCount(); i++) {
9644                final CharSequence paste;
9645                if (withFormatting) {
9646                    paste = clip.getItemAt(i).coerceToStyledText(getContext());
9647                } else {
9648                    // Get an item as text and remove all spans by toString().
9649                    final CharSequence text = clip.getItemAt(i).coerceToText(getContext());
9650                    paste = (text instanceof Spanned) ? text.toString() : text;
9651                }
9652                if (paste != null) {
9653                    if (!didFirst) {
9654                        Selection.setSelection((Spannable) mText, max);
9655                        ((Editable) mText).replace(min, max, paste);
9656                        didFirst = true;
9657                    } else {
9658                        ((Editable) mText).insert(getSelectionEnd(), "\n");
9659                        ((Editable) mText).insert(getSelectionEnd(), paste);
9660                    }
9661                }
9662            }
9663            sLastCutCopyOrTextChangedTime = 0;
9664        }
9665    }
9666
9667    private void shareSelectedText() {
9668        String selectedText = getSelectedText();
9669        if (selectedText != null && !selectedText.isEmpty()) {
9670            Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
9671            sharingIntent.setType("text/plain");
9672            sharingIntent.removeExtra(android.content.Intent.EXTRA_TEXT);
9673            sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, selectedText);
9674            getContext().startActivity(Intent.createChooser(sharingIntent, null));
9675            Selection.setSelection((Spannable) mText, getSelectionEnd());
9676        }
9677    }
9678
9679    private void setPrimaryClip(ClipData clip) {
9680        ClipboardManager clipboard = (ClipboardManager) getContext().
9681                getSystemService(Context.CLIPBOARD_SERVICE);
9682        clipboard.setPrimaryClip(clip);
9683        sLastCutCopyOrTextChangedTime = SystemClock.uptimeMillis();
9684    }
9685
9686    /**
9687     * Get the character offset closest to the specified absolute position. A typical use case is to
9688     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
9689     *
9690     * @param x The horizontal absolute position of a point on screen
9691     * @param y The vertical absolute position of a point on screen
9692     * @return the character offset for the character whose position is closest to the specified
9693     *  position. Returns -1 if there is no layout.
9694     */
9695    public int getOffsetForPosition(float x, float y) {
9696        if (getLayout() == null) return -1;
9697        final int line = getLineAtCoordinate(y);
9698        final int offset = getOffsetAtCoordinate(line, x);
9699        return offset;
9700    }
9701
9702    float convertToLocalHorizontalCoordinate(float x) {
9703        x -= getTotalPaddingLeft();
9704        // Clamp the position to inside of the view.
9705        x = Math.max(0.0f, x);
9706        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
9707        x += getScrollX();
9708        return x;
9709    }
9710
9711    int getLineAtCoordinate(float y) {
9712        y -= getTotalPaddingTop();
9713        // Clamp the position to inside of the view.
9714        y = Math.max(0.0f, y);
9715        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
9716        y += getScrollY();
9717        return getLayout().getLineForVertical((int) y);
9718    }
9719
9720    int getLineAtCoordinateUnclamped(float y) {
9721        y -= getTotalPaddingTop();
9722        y += getScrollY();
9723        return getLayout().getLineForVertical((int) y);
9724    }
9725
9726    int getOffsetAtCoordinate(int line, float x) {
9727        x = convertToLocalHorizontalCoordinate(x);
9728        return getLayout().getOffsetForHorizontal(line, x);
9729    }
9730
9731    @Override
9732    public boolean onDragEvent(DragEvent event) {
9733        switch (event.getAction()) {
9734            case DragEvent.ACTION_DRAG_STARTED:
9735                return mEditor != null && mEditor.hasInsertionController();
9736
9737            case DragEvent.ACTION_DRAG_ENTERED:
9738                TextView.this.requestFocus();
9739                return true;
9740
9741            case DragEvent.ACTION_DRAG_LOCATION:
9742                final int offset = getOffsetForPosition(event.getX(), event.getY());
9743                Selection.setSelection((Spannable)mText, offset);
9744                return true;
9745
9746            case DragEvent.ACTION_DROP:
9747                if (mEditor != null) mEditor.onDrop(event);
9748                return true;
9749
9750            case DragEvent.ACTION_DRAG_ENDED:
9751            case DragEvent.ACTION_DRAG_EXITED:
9752            default:
9753                return true;
9754        }
9755    }
9756
9757    boolean isInBatchEditMode() {
9758        if (mEditor == null) return false;
9759        final Editor.InputMethodState ims = mEditor.mInputMethodState;
9760        if (ims != null) {
9761            return ims.mBatchEditNesting > 0;
9762        }
9763        return mEditor.mInBatchEditControllers;
9764    }
9765
9766    @Override
9767    public void onRtlPropertiesChanged(int layoutDirection) {
9768        super.onRtlPropertiesChanged(layoutDirection);
9769
9770        final TextDirectionHeuristic newTextDir = getTextDirectionHeuristic();
9771        if (mTextDir != newTextDir) {
9772            mTextDir = newTextDir;
9773            if (mLayout != null) {
9774                checkForRelayout();
9775            }
9776        }
9777    }
9778
9779    /**
9780     * @hide
9781     */
9782    protected TextDirectionHeuristic getTextDirectionHeuristic() {
9783        if (hasPasswordTransformationMethod()) {
9784            // passwords fields should be LTR
9785            return TextDirectionHeuristics.LTR;
9786        }
9787
9788        // Always need to resolve layout direction first
9789        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
9790
9791        // Now, we can select the heuristic
9792        switch (getTextDirection()) {
9793            default:
9794            case TEXT_DIRECTION_FIRST_STRONG:
9795                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
9796                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
9797            case TEXT_DIRECTION_ANY_RTL:
9798                return TextDirectionHeuristics.ANYRTL_LTR;
9799            case TEXT_DIRECTION_LTR:
9800                return TextDirectionHeuristics.LTR;
9801            case TEXT_DIRECTION_RTL:
9802                return TextDirectionHeuristics.RTL;
9803            case TEXT_DIRECTION_LOCALE:
9804                return TextDirectionHeuristics.LOCALE;
9805            case TEXT_DIRECTION_FIRST_STRONG_LTR:
9806                return TextDirectionHeuristics.FIRSTSTRONG_LTR;
9807            case TEXT_DIRECTION_FIRST_STRONG_RTL:
9808                return TextDirectionHeuristics.FIRSTSTRONG_RTL;
9809        }
9810    }
9811
9812    /**
9813     * @hide
9814     */
9815    @Override
9816    public void onResolveDrawables(int layoutDirection) {
9817        // No need to resolve twice
9818        if (mLastLayoutDirection == layoutDirection) {
9819            return;
9820        }
9821        mLastLayoutDirection = layoutDirection;
9822
9823        // Resolve drawables
9824        if (mDrawables != null) {
9825            if (mDrawables.resolveWithLayoutDirection(layoutDirection)) {
9826                prepareDrawableForDisplay(mDrawables.mShowing[Drawables.LEFT]);
9827                prepareDrawableForDisplay(mDrawables.mShowing[Drawables.RIGHT]);
9828                applyCompoundDrawableTint();
9829            }
9830        }
9831    }
9832
9833    /**
9834     * Prepares a drawable for display by propagating layout direction and
9835     * drawable state.
9836     *
9837     * @param dr the drawable to prepare
9838     */
9839    private void prepareDrawableForDisplay(@Nullable Drawable dr) {
9840        if (dr == null) {
9841            return;
9842        }
9843
9844        dr.setLayoutDirection(getLayoutDirection());
9845
9846        if (dr.isStateful()) {
9847            dr.setState(getDrawableState());
9848            dr.jumpToCurrentState();
9849        }
9850    }
9851
9852    /**
9853     * @hide
9854     */
9855    protected void resetResolvedDrawables() {
9856        super.resetResolvedDrawables();
9857        mLastLayoutDirection = -1;
9858    }
9859
9860    /**
9861     * @hide
9862     */
9863    protected void viewClicked(InputMethodManager imm) {
9864        if (imm != null) {
9865            imm.viewClicked(this);
9866        }
9867    }
9868
9869    /**
9870     * Deletes the range of text [start, end[.
9871     * @hide
9872     */
9873    protected void deleteText_internal(int start, int end) {
9874        ((Editable) mText).delete(start, end);
9875    }
9876
9877    /**
9878     * Replaces the range of text [start, end[ by replacement text
9879     * @hide
9880     */
9881    protected void replaceText_internal(int start, int end, CharSequence text) {
9882        ((Editable) mText).replace(start, end, text);
9883    }
9884
9885    /**
9886     * Sets a span on the specified range of text
9887     * @hide
9888     */
9889    protected void setSpan_internal(Object span, int start, int end, int flags) {
9890        ((Editable) mText).setSpan(span, start, end, flags);
9891    }
9892
9893    /**
9894     * Moves the cursor to the specified offset position in text
9895     * @hide
9896     */
9897    protected void setCursorPosition_internal(int start, int end) {
9898        Selection.setSelection(((Editable) mText), start, end);
9899    }
9900
9901    /**
9902     * An Editor should be created as soon as any of the editable-specific fields (grouped
9903     * inside the Editor object) is assigned to a non-default value.
9904     * This method will create the Editor if needed.
9905     *
9906     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
9907     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
9908     * Editor for backward compatibility, as soon as one of these fields is assigned.
9909     *
9910     * Also note that for performance reasons, the mEditor is created when needed, but not
9911     * reset when no more edit-specific fields are needed.
9912     */
9913    private void createEditorIfNeeded() {
9914        if (mEditor == null) {
9915            mEditor = new Editor(this);
9916        }
9917    }
9918
9919    /**
9920     * @hide
9921     */
9922    @Override
9923    public CharSequence getIterableTextForAccessibility() {
9924        return mText;
9925    }
9926
9927    private void ensureIterableTextForAccessibilitySelectable() {
9928        if (!(mText instanceof Spannable)) {
9929            setText(mText, BufferType.SPANNABLE);
9930        }
9931    }
9932
9933    /**
9934     * @hide
9935     */
9936    @Override
9937    public TextSegmentIterator getIteratorForGranularity(int granularity) {
9938        switch (granularity) {
9939            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
9940                Spannable text = (Spannable) getIterableTextForAccessibility();
9941                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9942                    AccessibilityIterators.LineTextSegmentIterator iterator =
9943                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
9944                    iterator.initialize(text, getLayout());
9945                    return iterator;
9946                }
9947            } break;
9948            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
9949                Spannable text = (Spannable) getIterableTextForAccessibility();
9950                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9951                    AccessibilityIterators.PageTextSegmentIterator iterator =
9952                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
9953                    iterator.initialize(this);
9954                    return iterator;
9955                }
9956            } break;
9957        }
9958        return super.getIteratorForGranularity(granularity);
9959    }
9960
9961    /**
9962     * @hide
9963     */
9964    @Override
9965    public int getAccessibilitySelectionStart() {
9966        return getSelectionStart();
9967    }
9968
9969    /**
9970     * @hide
9971     */
9972    public boolean isAccessibilitySelectionExtendable() {
9973        return true;
9974    }
9975
9976    /**
9977     * @hide
9978     */
9979    @Override
9980    public int getAccessibilitySelectionEnd() {
9981        return getSelectionEnd();
9982    }
9983
9984    /**
9985     * @hide
9986     */
9987    @Override
9988    public void setAccessibilitySelection(int start, int end) {
9989        if (getAccessibilitySelectionStart() == start
9990                && getAccessibilitySelectionEnd() == end) {
9991            return;
9992        }
9993        CharSequence text = getIterableTextForAccessibility();
9994        if (Math.min(start, end) >= 0 && Math.max(start, end) <= text.length()) {
9995            Selection.setSelection((Spannable) text, start, end);
9996        } else {
9997            Selection.removeSelection((Spannable) text);
9998        }
9999        // Hide all selection controllers used for adjusting selection
10000        // since we are doing so explicitlty by other means and these
10001        // controllers interact with how selection behaves.
10002        if (mEditor != null) {
10003            mEditor.hideCursorAndSpanControllers();
10004            mEditor.stopTextActionMode();
10005        }
10006    }
10007
10008    /** @hide */
10009    @Override
10010    protected void encodeProperties(@NonNull ViewHierarchyEncoder stream) {
10011        super.encodeProperties(stream);
10012
10013        TruncateAt ellipsize = getEllipsize();
10014        stream.addProperty("text:ellipsize", ellipsize == null ? null : ellipsize.name());
10015        stream.addProperty("text:textSize", getTextSize());
10016        stream.addProperty("text:scaledTextSize", getScaledTextSize());
10017        stream.addProperty("text:typefaceStyle", getTypefaceStyle());
10018        stream.addProperty("text:selectionStart", getSelectionStart());
10019        stream.addProperty("text:selectionEnd", getSelectionEnd());
10020        stream.addProperty("text:curTextColor", mCurTextColor);
10021        stream.addProperty("text:text", mText == null ? null : mText.toString());
10022        stream.addProperty("text:gravity", mGravity);
10023    }
10024
10025    /**
10026     * User interface state that is stored by TextView for implementing
10027     * {@link View#onSaveInstanceState}.
10028     */
10029    public static class SavedState extends BaseSavedState {
10030        int selStart = -1;
10031        int selEnd = -1;
10032        CharSequence text;
10033        boolean frozenWithFocus;
10034        CharSequence error;
10035        ParcelableParcel editorState;  // Optional state from Editor.
10036
10037        SavedState(Parcelable superState) {
10038            super(superState);
10039        }
10040
10041        @Override
10042        public void writeToParcel(Parcel out, int flags) {
10043            super.writeToParcel(out, flags);
10044            out.writeInt(selStart);
10045            out.writeInt(selEnd);
10046            out.writeInt(frozenWithFocus ? 1 : 0);
10047            TextUtils.writeToParcel(text, out, flags);
10048
10049            if (error == null) {
10050                out.writeInt(0);
10051            } else {
10052                out.writeInt(1);
10053                TextUtils.writeToParcel(error, out, flags);
10054            }
10055
10056            if (editorState == null) {
10057                out.writeInt(0);
10058            } else {
10059                out.writeInt(1);
10060                editorState.writeToParcel(out, flags);
10061            }
10062        }
10063
10064        @Override
10065        public String toString() {
10066            String str = "TextView.SavedState{"
10067                    + Integer.toHexString(System.identityHashCode(this))
10068                    + " start=" + selStart + " end=" + selEnd;
10069            if (text != null) {
10070                str += " text=" + text;
10071            }
10072            return str + "}";
10073        }
10074
10075        @SuppressWarnings("hiding")
10076        public static final Parcelable.Creator<SavedState> CREATOR
10077                = new Parcelable.Creator<SavedState>() {
10078            public SavedState createFromParcel(Parcel in) {
10079                return new SavedState(in);
10080            }
10081
10082            public SavedState[] newArray(int size) {
10083                return new SavedState[size];
10084            }
10085        };
10086
10087        private SavedState(Parcel in) {
10088            super(in);
10089            selStart = in.readInt();
10090            selEnd = in.readInt();
10091            frozenWithFocus = (in.readInt() != 0);
10092            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
10093
10094            if (in.readInt() != 0) {
10095                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
10096            }
10097
10098            if (in.readInt() != 0) {
10099                editorState = ParcelableParcel.CREATOR.createFromParcel(in);
10100            }
10101        }
10102    }
10103
10104    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
10105        private char[] mChars;
10106        private int mStart, mLength;
10107
10108        public CharWrapper(char[] chars, int start, int len) {
10109            mChars = chars;
10110            mStart = start;
10111            mLength = len;
10112        }
10113
10114        /* package */ void set(char[] chars, int start, int len) {
10115            mChars = chars;
10116            mStart = start;
10117            mLength = len;
10118        }
10119
10120        public int length() {
10121            return mLength;
10122        }
10123
10124        public char charAt(int off) {
10125            return mChars[off + mStart];
10126        }
10127
10128        @Override
10129        public String toString() {
10130            return new String(mChars, mStart, mLength);
10131        }
10132
10133        public CharSequence subSequence(int start, int end) {
10134            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10135                throw new IndexOutOfBoundsException(start + ", " + end);
10136            }
10137
10138            return new String(mChars, start + mStart, end - start);
10139        }
10140
10141        public void getChars(int start, int end, char[] buf, int off) {
10142            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10143                throw new IndexOutOfBoundsException(start + ", " + end);
10144            }
10145
10146            System.arraycopy(mChars, start + mStart, buf, off, end - start);
10147        }
10148
10149        public void drawText(Canvas c, int start, int end,
10150                             float x, float y, Paint p) {
10151            c.drawText(mChars, start + mStart, end - start, x, y, p);
10152        }
10153
10154        public void drawTextRun(Canvas c, int start, int end,
10155                int contextStart, int contextEnd, float x, float y, boolean isRtl, Paint p) {
10156            int count = end - start;
10157            int contextCount = contextEnd - contextStart;
10158            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
10159                    contextCount, x, y, isRtl, p);
10160        }
10161
10162        public float measureText(int start, int end, Paint p) {
10163            return p.measureText(mChars, start + mStart, end - start);
10164        }
10165
10166        public int getTextWidths(int start, int end, float[] widths, Paint p) {
10167            return p.getTextWidths(mChars, start + mStart, end - start, widths);
10168        }
10169
10170        public float getTextRunAdvances(int start, int end, int contextStart,
10171                int contextEnd, boolean isRtl, float[] advances, int advancesIndex,
10172                Paint p) {
10173            int count = end - start;
10174            int contextCount = contextEnd - contextStart;
10175            return p.getTextRunAdvances(mChars, start + mStart, count,
10176                    contextStart + mStart, contextCount, isRtl, advances,
10177                    advancesIndex);
10178        }
10179
10180        public int getTextRunCursor(int contextStart, int contextEnd, int dir,
10181                int offset, int cursorOpt, Paint p) {
10182            int contextCount = contextEnd - contextStart;
10183            return p.getTextRunCursor(mChars, contextStart + mStart,
10184                    contextCount, dir, offset + mStart, cursorOpt);
10185        }
10186    }
10187
10188    private static final class Marquee {
10189        // TODO: Add an option to configure this
10190        private static final float MARQUEE_DELTA_MAX = 0.07f;
10191        private static final int MARQUEE_DELAY = 1200;
10192        private static final int MARQUEE_DP_PER_SECOND = 30;
10193
10194        private static final byte MARQUEE_STOPPED = 0x0;
10195        private static final byte MARQUEE_STARTING = 0x1;
10196        private static final byte MARQUEE_RUNNING = 0x2;
10197
10198        private final WeakReference<TextView> mView;
10199        private final Choreographer mChoreographer;
10200
10201        private byte mStatus = MARQUEE_STOPPED;
10202        private final float mPixelsPerSecond;
10203        private float mMaxScroll;
10204        private float mMaxFadeScroll;
10205        private float mGhostStart;
10206        private float mGhostOffset;
10207        private float mFadeStop;
10208        private int mRepeatLimit;
10209
10210        private float mScroll;
10211        private long mLastAnimationMs;
10212
10213        Marquee(TextView v) {
10214            final float density = v.getContext().getResources().getDisplayMetrics().density;
10215            mPixelsPerSecond = MARQUEE_DP_PER_SECOND * density;
10216            mView = new WeakReference<TextView>(v);
10217            mChoreographer = Choreographer.getInstance();
10218        }
10219
10220        private Choreographer.FrameCallback mTickCallback = new Choreographer.FrameCallback() {
10221            @Override
10222            public void doFrame(long frameTimeNanos) {
10223                tick();
10224            }
10225        };
10226
10227        private Choreographer.FrameCallback mStartCallback = new Choreographer.FrameCallback() {
10228            @Override
10229            public void doFrame(long frameTimeNanos) {
10230                mStatus = MARQUEE_RUNNING;
10231                mLastAnimationMs = mChoreographer.getFrameTime();
10232                tick();
10233            }
10234        };
10235
10236        private Choreographer.FrameCallback mRestartCallback = new Choreographer.FrameCallback() {
10237            @Override
10238            public void doFrame(long frameTimeNanos) {
10239                if (mStatus == MARQUEE_RUNNING) {
10240                    if (mRepeatLimit >= 0) {
10241                        mRepeatLimit--;
10242                    }
10243                    start(mRepeatLimit);
10244                }
10245            }
10246        };
10247
10248        void tick() {
10249            if (mStatus != MARQUEE_RUNNING) {
10250                return;
10251            }
10252
10253            mChoreographer.removeFrameCallback(mTickCallback);
10254
10255            final TextView textView = mView.get();
10256            if (textView != null && (textView.isFocused() || textView.isSelected())) {
10257                long currentMs = mChoreographer.getFrameTime();
10258                long deltaMs = currentMs - mLastAnimationMs;
10259                mLastAnimationMs = currentMs;
10260                float deltaPx = deltaMs / 1000f * mPixelsPerSecond;
10261                mScroll += deltaPx;
10262                if (mScroll > mMaxScroll) {
10263                    mScroll = mMaxScroll;
10264                    mChoreographer.postFrameCallbackDelayed(mRestartCallback, MARQUEE_DELAY);
10265                } else {
10266                    mChoreographer.postFrameCallback(mTickCallback);
10267                }
10268                textView.invalidate();
10269            }
10270        }
10271
10272        void stop() {
10273            mStatus = MARQUEE_STOPPED;
10274            mChoreographer.removeFrameCallback(mStartCallback);
10275            mChoreographer.removeFrameCallback(mRestartCallback);
10276            mChoreographer.removeFrameCallback(mTickCallback);
10277            resetScroll();
10278        }
10279
10280        private void resetScroll() {
10281            mScroll = 0.0f;
10282            final TextView textView = mView.get();
10283            if (textView != null) textView.invalidate();
10284        }
10285
10286        void start(int repeatLimit) {
10287            if (repeatLimit == 0) {
10288                stop();
10289                return;
10290            }
10291            mRepeatLimit = repeatLimit;
10292            final TextView textView = mView.get();
10293            if (textView != null && textView.mLayout != null) {
10294                mStatus = MARQUEE_STARTING;
10295                mScroll = 0.0f;
10296                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
10297                        textView.getCompoundPaddingRight();
10298                final float lineWidth = textView.mLayout.getLineWidth(0);
10299                final float gap = textWidth / 3.0f;
10300                mGhostStart = lineWidth - textWidth + gap;
10301                mMaxScroll = mGhostStart + textWidth;
10302                mGhostOffset = lineWidth + gap;
10303                mFadeStop = lineWidth + textWidth / 6.0f;
10304                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
10305
10306                textView.invalidate();
10307                mChoreographer.postFrameCallback(mStartCallback);
10308            }
10309        }
10310
10311        float getGhostOffset() {
10312            return mGhostOffset;
10313        }
10314
10315        float getScroll() {
10316            return mScroll;
10317        }
10318
10319        float getMaxFadeScroll() {
10320            return mMaxFadeScroll;
10321        }
10322
10323        boolean shouldDrawLeftFade() {
10324            return mScroll <= mFadeStop;
10325        }
10326
10327        boolean shouldDrawGhost() {
10328            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
10329        }
10330
10331        boolean isRunning() {
10332            return mStatus == MARQUEE_RUNNING;
10333        }
10334
10335        boolean isStopped() {
10336            return mStatus == MARQUEE_STOPPED;
10337        }
10338    }
10339
10340    private class ChangeWatcher implements TextWatcher, SpanWatcher {
10341
10342        private CharSequence mBeforeText;
10343
10344        public void beforeTextChanged(CharSequence buffer, int start,
10345                                      int before, int after) {
10346            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
10347                    + " before=" + before + " after=" + after + ": " + buffer);
10348
10349            if (AccessibilityManager.getInstance(mContext).isEnabled()
10350                    && ((!isPasswordInputType(getInputType()) && !hasPasswordTransformationMethod())
10351                            || shouldSpeakPasswordsForAccessibility())) {
10352                mBeforeText = buffer.toString();
10353            }
10354
10355            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
10356        }
10357
10358        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
10359            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
10360                    + " before=" + before + " after=" + after + ": " + buffer);
10361            TextView.this.handleTextChanged(buffer, start, before, after);
10362
10363            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
10364                    (isFocused() || isSelected() && isShown())) {
10365                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
10366                mBeforeText = null;
10367            }
10368        }
10369
10370        public void afterTextChanged(Editable buffer) {
10371            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
10372            TextView.this.sendAfterTextChanged(buffer);
10373
10374            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
10375                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
10376            }
10377        }
10378
10379        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
10380            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
10381                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
10382            TextView.this.spanChange(buf, what, s, st, e, en);
10383        }
10384
10385        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
10386            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
10387                    + " what=" + what + ": " + buf);
10388            TextView.this.spanChange(buf, what, -1, s, -1, e);
10389        }
10390
10391        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
10392            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
10393                    + " what=" + what + ": " + buf);
10394            TextView.this.spanChange(buf, what, s, -1, e, -1);
10395        }
10396    }
10397}
10398