TextView.java revision 4368d05af7ba8112c5b10ee0b97cbe88ddead32d 
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.widget;
18
19import static android.os.Build.VERSION_CODES.JELLY_BEAN_MR1;
20import android.R;
21import android.annotation.ColorInt;
22import android.annotation.DrawableRes;
23import android.annotation.NonNull;
24import android.annotation.Nullable;
25import android.annotation.Size;
26import android.annotation.StringRes;
27import android.annotation.StyleRes;
28import android.annotation.XmlRes;
29import android.app.Activity;
30import android.app.assist.AssistStructure;
31import android.content.ClipData;
32import android.content.ClipboardManager;
33import android.content.Context;
34import android.content.Intent;
35import android.content.UndoManager;
36import android.content.res.ColorStateList;
37import android.content.res.CompatibilityInfo;
38import android.content.res.Configuration;
39import android.content.res.Resources;
40import android.content.res.TypedArray;
41import android.content.res.XmlResourceParser;
42import android.graphics.Canvas;
43import android.graphics.Insets;
44import android.graphics.Paint;
45import android.graphics.Path;
46import android.graphics.PorterDuff;
47import android.graphics.Rect;
48import android.graphics.RectF;
49import android.graphics.Typeface;
50import android.graphics.drawable.Drawable;
51import android.os.AsyncTask;
52import android.os.Bundle;
53import android.os.Parcel;
54import android.os.Parcelable;
55import android.os.ParcelableParcel;
56import android.os.SystemClock;
57import android.os.UserHandle;
58import android.provider.Settings;
59import android.text.BoringLayout;
60import android.text.DynamicLayout;
61import android.text.Editable;
62import android.text.GetChars;
63import android.text.GraphicsOperations;
64import android.text.InputFilter;
65import android.text.InputType;
66import android.text.Layout;
67import android.text.ParcelableSpan;
68import android.text.Selection;
69import android.text.SpanWatcher;
70import android.text.Spannable;
71import android.text.SpannableString;
72import android.text.SpannableStringBuilder;
73import android.text.Spanned;
74import android.text.SpannedString;
75import android.text.StaticLayout;
76import android.text.TextDirectionHeuristic;
77import android.text.TextDirectionHeuristics;
78import android.text.TextPaint;
79import android.text.TextUtils;
80import android.text.TextUtils.TruncateAt;
81import android.text.TextWatcher;
82import android.text.method.AllCapsTransformationMethod;
83import android.text.method.ArrowKeyMovementMethod;
84import android.text.method.DateKeyListener;
85import android.text.method.DateTimeKeyListener;
86import android.text.method.DialerKeyListener;
87import android.text.method.DigitsKeyListener;
88import android.text.method.KeyListener;
89import android.text.method.LinkMovementMethod;
90import android.text.method.MetaKeyKeyListener;
91import android.text.method.MovementMethod;
92import android.text.method.PasswordTransformationMethod;
93import android.text.method.SingleLineTransformationMethod;
94import android.text.method.TextKeyListener;
95import android.text.method.TimeKeyListener;
96import android.text.method.TransformationMethod;
97import android.text.method.TransformationMethod2;
98import android.text.method.WordIterator;
99import android.text.style.CharacterStyle;
100import android.text.style.ClickableSpan;
101import android.text.style.ParagraphStyle;
102import android.text.style.SpellCheckSpan;
103import android.text.style.SuggestionSpan;
104import android.text.style.URLSpan;
105import android.text.style.UpdateAppearance;
106import android.text.util.Linkify;
107import android.util.AttributeSet;
108import android.util.LocaleList;
109import android.util.Log;
110import android.util.TypedValue;
111import android.view.AccessibilityIterators.TextSegmentIterator;
112import android.view.ActionMode;
113import android.view.Choreographer;
114import android.view.DragEvent;
115import android.view.Gravity;
116import android.view.HapticFeedbackConstants;
117import android.view.InputDevice;
118import android.view.KeyCharacterMap;
119import android.view.KeyEvent;
120import android.view.MotionEvent;
121import android.view.PointerIcon;
122import android.view.View;
123import android.view.ViewConfiguration;
124import android.view.ViewDebug;
125import android.view.ViewGroup.LayoutParams;
126import android.view.ViewHierarchyEncoder;
127import android.view.ViewParent;
128import android.view.ViewRootImpl;
129import android.view.ViewStructure;
130import android.view.ViewTreeObserver;
131import android.view.accessibility.AccessibilityEvent;
132import android.view.accessibility.AccessibilityManager;
133import android.view.accessibility.AccessibilityNodeInfo;
134import android.view.animation.AnimationUtils;
135import android.view.inputmethod.BaseInputConnection;
136import android.view.inputmethod.CompletionInfo;
137import android.view.inputmethod.CorrectionInfo;
138import android.view.inputmethod.EditorInfo;
139import android.view.inputmethod.ExtractedText;
140import android.view.inputmethod.ExtractedTextRequest;
141import android.view.inputmethod.InputConnection;
142import android.view.inputmethod.InputMethodManager;
143import android.view.textservice.SpellCheckerSubtype;
144import android.view.textservice.TextServicesManager;
145import android.widget.RemoteViews.RemoteView;
146
147import com.android.internal.annotations.VisibleForTesting;
148import com.android.internal.util.FastMath;
149import com.android.internal.widget.EditableInputConnection;
150
151import org.xmlpull.v1.XmlPullParserException;
152
153import java.io.IOException;
154import java.lang.ref.WeakReference;
155import java.util.ArrayList;
156import java.util.Locale;
157
158/**
159 * Displays text to the user and optionally allows them to edit it.  A TextView
160 * is a complete text editor, however the basic class is configured to not
161 * allow editing; see {@link EditText} for a subclass that configures the text
162 * view for editing.
163 *
164 * <p>
165 * To allow users to copy some or all of the TextView's value and paste it somewhere else, set the
166 * XML attribute {@link android.R.styleable#TextView_textIsSelectable
167 * android:textIsSelectable} to "true" or call
168 * {@link #setTextIsSelectable setTextIsSelectable(true)}. The {@code textIsSelectable} flag
169 * allows users to make selection gestures in the TextView, which in turn triggers the system's
170 * built-in copy/paste controls.
171 * <p>
172 * <b>XML attributes</b>
173 * <p>
174 * See {@link android.R.styleable#TextView TextView Attributes},
175 * {@link android.R.styleable#View View Attributes}
176 *
177 * @attr ref android.R.styleable#TextView_text
178 * @attr ref android.R.styleable#TextView_bufferType
179 * @attr ref android.R.styleable#TextView_hint
180 * @attr ref android.R.styleable#TextView_textColor
181 * @attr ref android.R.styleable#TextView_textColorHighlight
182 * @attr ref android.R.styleable#TextView_textColorHint
183 * @attr ref android.R.styleable#TextView_textAppearance
184 * @attr ref android.R.styleable#TextView_textColorLink
185 * @attr ref android.R.styleable#TextView_textSize
186 * @attr ref android.R.styleable#TextView_textScaleX
187 * @attr ref android.R.styleable#TextView_fontFamily
188 * @attr ref android.R.styleable#TextView_typeface
189 * @attr ref android.R.styleable#TextView_textStyle
190 * @attr ref android.R.styleable#TextView_cursorVisible
191 * @attr ref android.R.styleable#TextView_maxLines
192 * @attr ref android.R.styleable#TextView_maxHeight
193 * @attr ref android.R.styleable#TextView_lines
194 * @attr ref android.R.styleable#TextView_height
195 * @attr ref android.R.styleable#TextView_minLines
196 * @attr ref android.R.styleable#TextView_minHeight
197 * @attr ref android.R.styleable#TextView_maxEms
198 * @attr ref android.R.styleable#TextView_maxWidth
199 * @attr ref android.R.styleable#TextView_ems
200 * @attr ref android.R.styleable#TextView_width
201 * @attr ref android.R.styleable#TextView_minEms
202 * @attr ref android.R.styleable#TextView_minWidth
203 * @attr ref android.R.styleable#TextView_gravity
204 * @attr ref android.R.styleable#TextView_scrollHorizontally
205 * @attr ref android.R.styleable#TextView_password
206 * @attr ref android.R.styleable#TextView_singleLine
207 * @attr ref android.R.styleable#TextView_selectAllOnFocus
208 * @attr ref android.R.styleable#TextView_includeFontPadding
209 * @attr ref android.R.styleable#TextView_maxLength
210 * @attr ref android.R.styleable#TextView_shadowColor
211 * @attr ref android.R.styleable#TextView_shadowDx
212 * @attr ref android.R.styleable#TextView_shadowDy
213 * @attr ref android.R.styleable#TextView_shadowRadius
214 * @attr ref android.R.styleable#TextView_autoLink
215 * @attr ref android.R.styleable#TextView_linksClickable
216 * @attr ref android.R.styleable#TextView_numeric
217 * @attr ref android.R.styleable#TextView_digits
218 * @attr ref android.R.styleable#TextView_phoneNumber
219 * @attr ref android.R.styleable#TextView_inputMethod
220 * @attr ref android.R.styleable#TextView_capitalize
221 * @attr ref android.R.styleable#TextView_autoText
222 * @attr ref android.R.styleable#TextView_editable
223 * @attr ref android.R.styleable#TextView_freezesText
224 * @attr ref android.R.styleable#TextView_ellipsize
225 * @attr ref android.R.styleable#TextView_drawableTop
226 * @attr ref android.R.styleable#TextView_drawableBottom
227 * @attr ref android.R.styleable#TextView_drawableRight
228 * @attr ref android.R.styleable#TextView_drawableLeft
229 * @attr ref android.R.styleable#TextView_drawableStart
230 * @attr ref android.R.styleable#TextView_drawableEnd
231 * @attr ref android.R.styleable#TextView_drawablePadding
232 * @attr ref android.R.styleable#TextView_drawableTint
233 * @attr ref android.R.styleable#TextView_drawableTintMode
234 * @attr ref android.R.styleable#TextView_lineSpacingExtra
235 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
236 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
237 * @attr ref android.R.styleable#TextView_inputType
238 * @attr ref android.R.styleable#TextView_imeOptions
239 * @attr ref android.R.styleable#TextView_privateImeOptions
240 * @attr ref android.R.styleable#TextView_imeActionLabel
241 * @attr ref android.R.styleable#TextView_imeActionId
242 * @attr ref android.R.styleable#TextView_editorExtras
243 * @attr ref android.R.styleable#TextView_elegantTextHeight
244 * @attr ref android.R.styleable#TextView_letterSpacing
245 * @attr ref android.R.styleable#TextView_fontFeatureSettings
246 * @attr ref android.R.styleable#TextView_breakStrategy
247 * @attr ref android.R.styleable#TextView_hyphenationFrequency
248 */
249@RemoteView
250public class TextView extends View implements ViewTreeObserver.OnPreDrawListener {
251    static final String LOG_TAG = "TextView";
252    static final boolean DEBUG_EXTRACT = false;
253
254    // Enum for the "typeface" XML parameter.
255    // TODO: How can we get this from the XML instead of hardcoding it here?
256    private static final int SANS = 1;
257    private static final int SERIF = 2;
258    private static final int MONOSPACE = 3;
259
260    // Bitfield for the "numeric" XML parameter.
261    // TODO: How can we get this from the XML instead of hardcoding it here?
262    private static final int SIGNED = 2;
263    private static final int DECIMAL = 4;
264
265    /**
266     * Draw marquee text with fading edges as usual
267     */
268    private static final int MARQUEE_FADE_NORMAL = 0;
269
270    /**
271     * Draw marquee text as ellipsize end while inactive instead of with the fade.
272     * (Useful for devices where the fade can be expensive if overdone)
273     */
274    private static final int MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS = 1;
275
276    /**
277     * Draw marquee text with fading edges because it is currently active/animating.
278     */
279    private static final int MARQUEE_FADE_SWITCH_SHOW_FADE = 2;
280
281    private static final int LINES = 1;
282    private static final int EMS = LINES;
283    private static final int PIXELS = 2;
284
285    private static final RectF TEMP_RECTF = new RectF();
286
287    // XXX should be much larger
288    private static final int VERY_WIDE = 1024*1024;
289    private static final int ANIMATED_SCROLL_GAP = 250;
290
291    private static final InputFilter[] NO_FILTERS = new InputFilter[0];
292    private static final Spanned EMPTY_SPANNED = new SpannedString("");
293
294    private static final int CHANGE_WATCHER_PRIORITY = 100;
295
296    // New state used to change background based on whether this TextView is multiline.
297    private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline };
298
299    // Accessibility action to share selected text.
300    private static final int ACCESSIBILITY_ACTION_SHARE = 0x10000000;
301
302    /**
303     * @hide
304     */
305    // Accessibility action start id for "process text" actions.
306    static final int ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID = 0x10000100;
307
308    /**
309     * @hide
310     */
311    static final int PROCESS_TEXT_REQUEST_CODE = 100;
312
313    /**
314     *  Return code of {@link #doKeyDown}.
315     */
316    private static final int KEY_EVENT_NOT_HANDLED = 0;
317    private static final int KEY_EVENT_HANDLED = -1;
318    private static final int KEY_DOWN_HANDLED_BY_KEY_LISTENER = 1;
319    private static final int KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD = 2;
320
321    // System wide time for last cut, copy or text changed action.
322    static long sLastCutCopyOrTextChangedTime;
323
324    private ColorStateList mTextColor;
325    private ColorStateList mHintTextColor;
326    private ColorStateList mLinkTextColor;
327    @ViewDebug.ExportedProperty(category = "text")
328    private int mCurTextColor;
329    private int mCurHintTextColor;
330    private boolean mFreezesText;
331    private boolean mDispatchTemporaryDetach;
332
333    /** Whether this view is temporarily detached from the parent view. */
334    boolean mTemporaryDetach;
335
336    private Editable.Factory mEditableFactory = Editable.Factory.getInstance();
337    private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance();
338
339    private float mShadowRadius, mShadowDx, mShadowDy;
340    private int mShadowColor;
341
342    private boolean mPreDrawRegistered;
343    private boolean mPreDrawListenerDetached;
344
345    // A flag to prevent repeated movements from escaping the enclosing text view. The idea here is
346    // that if a user is holding down a movement key to traverse text, we shouldn't also traverse
347    // the view hierarchy. On the other hand, if the user is using the movement key to traverse views
348    // (i.e. the first movement was to traverse out of this view, or this view was traversed into by
349    // the user holding the movement key down) then we shouldn't prevent the focus from changing.
350    private boolean mPreventDefaultMovement;
351
352    private TextUtils.TruncateAt mEllipsize;
353
354    static class Drawables {
355        static final int LEFT = 0;
356        static final int TOP = 1;
357        static final int RIGHT = 2;
358        static final int BOTTOM = 3;
359
360        static final int DRAWABLE_NONE = -1;
361        static final int DRAWABLE_RIGHT = 0;
362        static final int DRAWABLE_LEFT = 1;
363
364        final Rect mCompoundRect = new Rect();
365
366        final Drawable[] mShowing = new Drawable[4];
367
368        ColorStateList mTintList;
369        PorterDuff.Mode mTintMode;
370        boolean mHasTint;
371        boolean mHasTintMode;
372
373        Drawable mDrawableStart, mDrawableEnd, mDrawableError, mDrawableTemp;
374        Drawable mDrawableLeftInitial, mDrawableRightInitial;
375
376        boolean mIsRtlCompatibilityMode;
377        boolean mOverride;
378
379        int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight,
380                mDrawableSizeStart, mDrawableSizeEnd, mDrawableSizeError, mDrawableSizeTemp;
381
382        int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight,
383                mDrawableHeightStart, mDrawableHeightEnd, mDrawableHeightError, mDrawableHeightTemp;
384
385        int mDrawablePadding;
386
387        int mDrawableSaved = DRAWABLE_NONE;
388
389        public Drawables(Context context) {
390            final int targetSdkVersion = context.getApplicationInfo().targetSdkVersion;
391            mIsRtlCompatibilityMode = (targetSdkVersion < JELLY_BEAN_MR1 ||
392                !context.getApplicationInfo().hasRtlSupport());
393            mOverride = false;
394        }
395
396        public void resolveWithLayoutDirection(int layoutDirection) {
397            // First reset "left" and "right" drawables to their initial values
398            mShowing[Drawables.LEFT] = mDrawableLeftInitial;
399            mShowing[Drawables.RIGHT] = mDrawableRightInitial;
400
401            if (mIsRtlCompatibilityMode) {
402                // Use "start" drawable as "left" drawable if the "left" drawable was not defined
403                if (mDrawableStart != null && mShowing[Drawables.LEFT] == null) {
404                    mShowing[Drawables.LEFT] = mDrawableStart;
405                    mDrawableSizeLeft = mDrawableSizeStart;
406                    mDrawableHeightLeft = mDrawableHeightStart;
407                }
408                // Use "end" drawable as "right" drawable if the "right" drawable was not defined
409                if (mDrawableEnd != null && mShowing[Drawables.RIGHT] == null) {
410                    mShowing[Drawables.RIGHT] = mDrawableEnd;
411                    mDrawableSizeRight = mDrawableSizeEnd;
412                    mDrawableHeightRight = mDrawableHeightEnd;
413                }
414            } else {
415                // JB-MR1+ normal case: "start" / "end" drawables are overriding "left" / "right"
416                // drawable if and only if they have been defined
417                switch(layoutDirection) {
418                    case LAYOUT_DIRECTION_RTL:
419                        if (mOverride) {
420                            mShowing[Drawables.RIGHT] = mDrawableStart;
421                            mDrawableSizeRight = mDrawableSizeStart;
422                            mDrawableHeightRight = mDrawableHeightStart;
423
424                            mShowing[Drawables.LEFT] = mDrawableEnd;
425                            mDrawableSizeLeft = mDrawableSizeEnd;
426                            mDrawableHeightLeft = mDrawableHeightEnd;
427                        }
428                        break;
429
430                    case LAYOUT_DIRECTION_LTR:
431                    default:
432                        if (mOverride) {
433                            mShowing[Drawables.LEFT] = mDrawableStart;
434                            mDrawableSizeLeft = mDrawableSizeStart;
435                            mDrawableHeightLeft = mDrawableHeightStart;
436
437                            mShowing[Drawables.RIGHT] = mDrawableEnd;
438                            mDrawableSizeRight = mDrawableSizeEnd;
439                            mDrawableHeightRight = mDrawableHeightEnd;
440                        }
441                        break;
442                }
443            }
444            applyErrorDrawableIfNeeded(layoutDirection);
445            updateDrawablesLayoutDirection(layoutDirection);
446        }
447
448        private void updateDrawablesLayoutDirection(int layoutDirection) {
449            for (Drawable dr : mShowing) {
450                if (dr != null) {
451                    dr.setLayoutDirection(layoutDirection);
452                }
453            }
454        }
455
456        public void setErrorDrawable(Drawable dr, TextView tv) {
457            if (mDrawableError != dr && mDrawableError != null) {
458                mDrawableError.setCallback(null);
459            }
460            mDrawableError = dr;
461
462            if (mDrawableError != null) {
463                final Rect compoundRect = mCompoundRect;
464                final int[] state = tv.getDrawableState();
465
466                mDrawableError.setState(state);
467                mDrawableError.copyBounds(compoundRect);
468                mDrawableError.setCallback(tv);
469                mDrawableSizeError = compoundRect.width();
470                mDrawableHeightError = compoundRect.height();
471            } else {
472                mDrawableSizeError = mDrawableHeightError = 0;
473            }
474        }
475
476        private void applyErrorDrawableIfNeeded(int layoutDirection) {
477            // first restore the initial state if needed
478            switch (mDrawableSaved) {
479                case DRAWABLE_LEFT:
480                    mShowing[Drawables.LEFT] = mDrawableTemp;
481                    mDrawableSizeLeft = mDrawableSizeTemp;
482                    mDrawableHeightLeft = mDrawableHeightTemp;
483                    break;
484                case DRAWABLE_RIGHT:
485                    mShowing[Drawables.RIGHT] = mDrawableTemp;
486                    mDrawableSizeRight = mDrawableSizeTemp;
487                    mDrawableHeightRight = mDrawableHeightTemp;
488                    break;
489                case DRAWABLE_NONE:
490                default:
491            }
492            // then, if needed, assign the Error drawable to the correct location
493            if (mDrawableError != null) {
494                switch(layoutDirection) {
495                    case LAYOUT_DIRECTION_RTL:
496                        mDrawableSaved = DRAWABLE_LEFT;
497
498                        mDrawableTemp = mShowing[Drawables.LEFT];
499                        mDrawableSizeTemp = mDrawableSizeLeft;
500                        mDrawableHeightTemp = mDrawableHeightLeft;
501
502                        mShowing[Drawables.LEFT] = mDrawableError;
503                        mDrawableSizeLeft = mDrawableSizeError;
504                        mDrawableHeightLeft = mDrawableHeightError;
505                        break;
506                    case LAYOUT_DIRECTION_LTR:
507                    default:
508                        mDrawableSaved = DRAWABLE_RIGHT;
509
510                        mDrawableTemp = mShowing[Drawables.RIGHT];
511                        mDrawableSizeTemp = mDrawableSizeRight;
512                        mDrawableHeightTemp = mDrawableHeightRight;
513
514                        mShowing[Drawables.RIGHT] = mDrawableError;
515                        mDrawableSizeRight = mDrawableSizeError;
516                        mDrawableHeightRight = mDrawableHeightError;
517                        break;
518                }
519            }
520        }
521    }
522
523    Drawables mDrawables;
524
525    private CharWrapper mCharWrapper;
526
527    private Marquee mMarquee;
528    private boolean mRestartMarquee;
529
530    private int mMarqueeRepeatLimit = 3;
531
532    private int mLastLayoutDirection = -1;
533
534    /**
535     * On some devices the fading edges add a performance penalty if used
536     * extensively in the same layout. This mode indicates how the marquee
537     * is currently being shown, if applicable. (mEllipsize will == MARQUEE)
538     */
539    private int mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
540
541    /**
542     * When mMarqueeFadeMode is not MARQUEE_FADE_NORMAL, this stores
543     * the layout that should be used when the mode switches.
544     */
545    private Layout mSavedMarqueeModeLayout;
546
547    @ViewDebug.ExportedProperty(category = "text")
548    private CharSequence mText;
549    private CharSequence mTransformed;
550    private BufferType mBufferType = BufferType.NORMAL;
551
552    private CharSequence mHint;
553    private Layout mHintLayout;
554
555    private MovementMethod mMovement;
556
557    private TransformationMethod mTransformation;
558    private boolean mAllowTransformationLengthChange;
559    private ChangeWatcher mChangeWatcher;
560
561    private ArrayList<TextWatcher> mListeners;
562
563    // display attributes
564    private final TextPaint mTextPaint;
565    private boolean mUserSetTextScaleX;
566    private Layout mLayout;
567    private boolean mLocalesChanged = false;
568
569    @ViewDebug.ExportedProperty(category = "text")
570    private int mGravity = Gravity.TOP | Gravity.START;
571    private boolean mHorizontallyScrolling;
572
573    private int mAutoLinkMask;
574    private boolean mLinksClickable = true;
575
576    private float mSpacingMult = 1.0f;
577    private float mSpacingAdd = 0.0f;
578
579    private int mBreakStrategy;
580    private int mHyphenationFrequency;
581
582    private int mMaximum = Integer.MAX_VALUE;
583    private int mMaxMode = LINES;
584    private int mMinimum = 0;
585    private int mMinMode = LINES;
586
587    private int mOldMaximum = mMaximum;
588    private int mOldMaxMode = mMaxMode;
589
590    private int mMaxWidth = Integer.MAX_VALUE;
591    private int mMaxWidthMode = PIXELS;
592    private int mMinWidth = 0;
593    private int mMinWidthMode = PIXELS;
594
595    private boolean mSingleLine;
596    private int mDesiredHeightAtMeasure = -1;
597    private boolean mIncludePad = true;
598    private int mDeferScroll = -1;
599
600    // tmp primitives, so we don't alloc them on each draw
601    private Rect mTempRect;
602    private long mLastScroll;
603    private Scroller mScroller;
604
605    private BoringLayout.Metrics mBoring, mHintBoring;
606    private BoringLayout mSavedLayout, mSavedHintLayout;
607
608    private TextDirectionHeuristic mTextDir;
609
610    private InputFilter[] mFilters = NO_FILTERS;
611
612    private volatile Locale mCurrentSpellCheckerLocaleCache;
613
614    // It is possible to have a selection even when mEditor is null (programmatically set, like when
615    // a link is pressed). These highlight-related fields do not go in mEditor.
616    int mHighlightColor = 0x6633B5E5;
617    private Path mHighlightPath;
618    private final Paint mHighlightPaint;
619    private boolean mHighlightPathBogus = true;
620
621    private boolean mFirstTouch = false;
622    private long mLastTouchUpTime = 0;
623
624    // Although these fields are specific to editable text, they are not added to Editor because
625    // they are defined by the TextView's style and are theme-dependent.
626    int mCursorDrawableRes;
627    // These six fields, could be moved to Editor, since we know their default values and we
628    // could condition the creation of the Editor to a non standard value. This is however
629    // brittle since the hardcoded values here (such as
630    // com.android.internal.R.drawable.text_select_handle_left) would have to be updated if the
631    // default style is modified.
632    int mTextSelectHandleLeftRes;
633    int mTextSelectHandleRightRes;
634    int mTextSelectHandleRes;
635    int mTextEditSuggestionItemLayout;
636    int mTextEditSuggestionContainerLayout;
637    int mTextEditSuggestionHighlightStyle;
638
639    /**
640     * EditText specific data, created on demand when one of the Editor fields is used.
641     * See {@link #createEditorIfNeeded()}.
642     */
643    private Editor mEditor;
644
645    /*
646     * Kick-start the font cache for the zygote process (to pay the cost of
647     * initializing freetype for our default font only once).
648     */
649    static {
650        Paint p = new Paint();
651        p.setAntiAlias(true);
652        // We don't care about the result, just the side-effect of measuring.
653        p.measureText("H");
654    }
655
656    /**
657     * Interface definition for a callback to be invoked when an action is
658     * performed on the editor.
659     */
660    public interface OnEditorActionListener {
661        /**
662         * Called when an action is being performed.
663         *
664         * @param v The view that was clicked.
665         * @param actionId Identifier of the action.  This will be either the
666         * identifier you supplied, or {@link EditorInfo#IME_NULL
667         * EditorInfo.IME_NULL} if being called due to the enter key
668         * being pressed.
669         * @param event If triggered by an enter key, this is the event;
670         * otherwise, this is null.
671         * @return Return true if you have consumed the action, else false.
672         */
673        boolean onEditorAction(TextView v, int actionId, KeyEvent event);
674    }
675
676    public TextView(Context context) {
677        this(context, null);
678    }
679
680    public TextView(Context context, @Nullable AttributeSet attrs) {
681        this(context, attrs, com.android.internal.R.attr.textViewStyle);
682    }
683
684    public TextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
685        this(context, attrs, defStyleAttr, 0);
686    }
687
688    @SuppressWarnings("deprecation")
689    public TextView(
690            Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
691        super(context, attrs, defStyleAttr, defStyleRes);
692
693        mText = "";
694
695        final Resources res = getResources();
696        final CompatibilityInfo compat = res.getCompatibilityInfo();
697
698        mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
699        mTextPaint.density = res.getDisplayMetrics().density;
700        mTextPaint.setCompatibilityScaling(compat.applicationScale);
701
702        mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
703        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
704
705        mMovement = getDefaultMovementMethod();
706
707        mTransformation = null;
708
709        int textColorHighlight = 0;
710        ColorStateList textColor = null;
711        ColorStateList textColorHint = null;
712        ColorStateList textColorLink = null;
713        int textSize = 15;
714        String fontFamily = null;
715        boolean fontFamilyExplicit = false;
716        int typefaceIndex = -1;
717        int styleIndex = -1;
718        boolean allCaps = false;
719        int shadowcolor = 0;
720        float dx = 0, dy = 0, r = 0;
721        boolean elegant = false;
722        float letterSpacing = 0;
723        String fontFeatureSettings = null;
724        mBreakStrategy = Layout.BREAK_STRATEGY_SIMPLE;
725        mHyphenationFrequency = Layout.HYPHENATION_FREQUENCY_NONE;
726
727        final Resources.Theme theme = context.getTheme();
728
729        /*
730         * Look the appearance up without checking first if it exists because
731         * almost every TextView has one and it greatly simplifies the logic
732         * to be able to parse the appearance first and then let specific tags
733         * for this View override it.
734         */
735        TypedArray a = theme.obtainStyledAttributes(attrs,
736                com.android.internal.R.styleable.TextViewAppearance, defStyleAttr, defStyleRes);
737        TypedArray appearance = null;
738        int ap = a.getResourceId(
739                com.android.internal.R.styleable.TextViewAppearance_textAppearance, -1);
740        a.recycle();
741        if (ap != -1) {
742            appearance = theme.obtainStyledAttributes(
743                    ap, com.android.internal.R.styleable.TextAppearance);
744        }
745        if (appearance != null) {
746            int n = appearance.getIndexCount();
747            for (int i = 0; i < n; i++) {
748                int attr = appearance.getIndex(i);
749
750                switch (attr) {
751                case com.android.internal.R.styleable.TextAppearance_textColorHighlight:
752                    textColorHighlight = appearance.getColor(attr, textColorHighlight);
753                    break;
754
755                case com.android.internal.R.styleable.TextAppearance_textColor:
756                    textColor = appearance.getColorStateList(attr);
757                    break;
758
759                case com.android.internal.R.styleable.TextAppearance_textColorHint:
760                    textColorHint = appearance.getColorStateList(attr);
761                    break;
762
763                case com.android.internal.R.styleable.TextAppearance_textColorLink:
764                    textColorLink = appearance.getColorStateList(attr);
765                    break;
766
767                case com.android.internal.R.styleable.TextAppearance_textSize:
768                    textSize = appearance.getDimensionPixelSize(attr, textSize);
769                    break;
770
771                case com.android.internal.R.styleable.TextAppearance_typeface:
772                    typefaceIndex = appearance.getInt(attr, -1);
773                    break;
774
775                case com.android.internal.R.styleable.TextAppearance_fontFamily:
776                    fontFamily = appearance.getString(attr);
777                    break;
778
779                case com.android.internal.R.styleable.TextAppearance_textStyle:
780                    styleIndex = appearance.getInt(attr, -1);
781                    break;
782
783                case com.android.internal.R.styleable.TextAppearance_textAllCaps:
784                    allCaps = appearance.getBoolean(attr, false);
785                    break;
786
787                case com.android.internal.R.styleable.TextAppearance_shadowColor:
788                    shadowcolor = appearance.getInt(attr, 0);
789                    break;
790
791                case com.android.internal.R.styleable.TextAppearance_shadowDx:
792                    dx = appearance.getFloat(attr, 0);
793                    break;
794
795                case com.android.internal.R.styleable.TextAppearance_shadowDy:
796                    dy = appearance.getFloat(attr, 0);
797                    break;
798
799                case com.android.internal.R.styleable.TextAppearance_shadowRadius:
800                    r = appearance.getFloat(attr, 0);
801                    break;
802
803                case com.android.internal.R.styleable.TextAppearance_elegantTextHeight:
804                    elegant = appearance.getBoolean(attr, false);
805                    break;
806
807                case com.android.internal.R.styleable.TextAppearance_letterSpacing:
808                    letterSpacing = appearance.getFloat(attr, 0);
809                    break;
810
811                case com.android.internal.R.styleable.TextAppearance_fontFeatureSettings:
812                    fontFeatureSettings = appearance.getString(attr);
813                    break;
814                }
815            }
816
817            appearance.recycle();
818        }
819
820        boolean editable = getDefaultEditable();
821        CharSequence inputMethod = null;
822        int numeric = 0;
823        CharSequence digits = null;
824        boolean phone = false;
825        boolean autotext = false;
826        int autocap = -1;
827        int buffertype = 0;
828        boolean selectallonfocus = false;
829        Drawable drawableLeft = null, drawableTop = null, drawableRight = null,
830            drawableBottom = null, drawableStart = null, drawableEnd = null;
831        ColorStateList drawableTint = null;
832        PorterDuff.Mode drawableTintMode = null;
833        int drawablePadding = 0;
834        int ellipsize = -1;
835        boolean singleLine = false;
836        int maxlength = -1;
837        CharSequence text = "";
838        CharSequence hint = null;
839        boolean password = false;
840        int inputType = EditorInfo.TYPE_NULL;
841
842        a = theme.obtainStyledAttributes(
843                    attrs, com.android.internal.R.styleable.TextView, defStyleAttr, defStyleRes);
844
845        int n = a.getIndexCount();
846        for (int i = 0; i < n; i++) {
847            int attr = a.getIndex(i);
848
849            switch (attr) {
850            case com.android.internal.R.styleable.TextView_editable:
851                editable = a.getBoolean(attr, editable);
852                break;
853
854            case com.android.internal.R.styleable.TextView_inputMethod:
855                inputMethod = a.getText(attr);
856                break;
857
858            case com.android.internal.R.styleable.TextView_numeric:
859                numeric = a.getInt(attr, numeric);
860                break;
861
862            case com.android.internal.R.styleable.TextView_digits:
863                digits = a.getText(attr);
864                break;
865
866            case com.android.internal.R.styleable.TextView_phoneNumber:
867                phone = a.getBoolean(attr, phone);
868                break;
869
870            case com.android.internal.R.styleable.TextView_autoText:
871                autotext = a.getBoolean(attr, autotext);
872                break;
873
874            case com.android.internal.R.styleable.TextView_capitalize:
875                autocap = a.getInt(attr, autocap);
876                break;
877
878            case com.android.internal.R.styleable.TextView_bufferType:
879                buffertype = a.getInt(attr, buffertype);
880                break;
881
882            case com.android.internal.R.styleable.TextView_selectAllOnFocus:
883                selectallonfocus = a.getBoolean(attr, selectallonfocus);
884                break;
885
886            case com.android.internal.R.styleable.TextView_autoLink:
887                mAutoLinkMask = a.getInt(attr, 0);
888                break;
889
890            case com.android.internal.R.styleable.TextView_linksClickable:
891                mLinksClickable = a.getBoolean(attr, true);
892                break;
893
894            case com.android.internal.R.styleable.TextView_drawableLeft:
895                drawableLeft = a.getDrawable(attr);
896                break;
897
898            case com.android.internal.R.styleable.TextView_drawableTop:
899                drawableTop = a.getDrawable(attr);
900                break;
901
902            case com.android.internal.R.styleable.TextView_drawableRight:
903                drawableRight = a.getDrawable(attr);
904                break;
905
906            case com.android.internal.R.styleable.TextView_drawableBottom:
907                drawableBottom = a.getDrawable(attr);
908                break;
909
910            case com.android.internal.R.styleable.TextView_drawableStart:
911                drawableStart = a.getDrawable(attr);
912                break;
913
914            case com.android.internal.R.styleable.TextView_drawableEnd:
915                drawableEnd = a.getDrawable(attr);
916                break;
917
918            case com.android.internal.R.styleable.TextView_drawableTint:
919                drawableTint = a.getColorStateList(attr);
920                break;
921
922            case com.android.internal.R.styleable.TextView_drawableTintMode:
923                drawableTintMode = Drawable.parseTintMode(a.getInt(attr, -1), drawableTintMode);
924                break;
925
926            case com.android.internal.R.styleable.TextView_drawablePadding:
927                drawablePadding = a.getDimensionPixelSize(attr, drawablePadding);
928                break;
929
930            case com.android.internal.R.styleable.TextView_maxLines:
931                setMaxLines(a.getInt(attr, -1));
932                break;
933
934            case com.android.internal.R.styleable.TextView_maxHeight:
935                setMaxHeight(a.getDimensionPixelSize(attr, -1));
936                break;
937
938            case com.android.internal.R.styleable.TextView_lines:
939                setLines(a.getInt(attr, -1));
940                break;
941
942            case com.android.internal.R.styleable.TextView_height:
943                setHeight(a.getDimensionPixelSize(attr, -1));
944                break;
945
946            case com.android.internal.R.styleable.TextView_minLines:
947                setMinLines(a.getInt(attr, -1));
948                break;
949
950            case com.android.internal.R.styleable.TextView_minHeight:
951                setMinHeight(a.getDimensionPixelSize(attr, -1));
952                break;
953
954            case com.android.internal.R.styleable.TextView_maxEms:
955                setMaxEms(a.getInt(attr, -1));
956                break;
957
958            case com.android.internal.R.styleable.TextView_maxWidth:
959                setMaxWidth(a.getDimensionPixelSize(attr, -1));
960                break;
961
962            case com.android.internal.R.styleable.TextView_ems:
963                setEms(a.getInt(attr, -1));
964                break;
965
966            case com.android.internal.R.styleable.TextView_width:
967                setWidth(a.getDimensionPixelSize(attr, -1));
968                break;
969
970            case com.android.internal.R.styleable.TextView_minEms:
971                setMinEms(a.getInt(attr, -1));
972                break;
973
974            case com.android.internal.R.styleable.TextView_minWidth:
975                setMinWidth(a.getDimensionPixelSize(attr, -1));
976                break;
977
978            case com.android.internal.R.styleable.TextView_gravity:
979                setGravity(a.getInt(attr, -1));
980                break;
981
982            case com.android.internal.R.styleable.TextView_hint:
983                hint = a.getText(attr);
984                break;
985
986            case com.android.internal.R.styleable.TextView_text:
987                text = a.getText(attr);
988                break;
989
990            case com.android.internal.R.styleable.TextView_scrollHorizontally:
991                if (a.getBoolean(attr, false)) {
992                    setHorizontallyScrolling(true);
993                }
994                break;
995
996            case com.android.internal.R.styleable.TextView_singleLine:
997                singleLine = a.getBoolean(attr, singleLine);
998                break;
999
1000            case com.android.internal.R.styleable.TextView_ellipsize:
1001                ellipsize = a.getInt(attr, ellipsize);
1002                break;
1003
1004            case com.android.internal.R.styleable.TextView_marqueeRepeatLimit:
1005                setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit));
1006                break;
1007
1008            case com.android.internal.R.styleable.TextView_includeFontPadding:
1009                if (!a.getBoolean(attr, true)) {
1010                    setIncludeFontPadding(false);
1011                }
1012                break;
1013
1014            case com.android.internal.R.styleable.TextView_cursorVisible:
1015                if (!a.getBoolean(attr, true)) {
1016                    setCursorVisible(false);
1017                }
1018                break;
1019
1020            case com.android.internal.R.styleable.TextView_maxLength:
1021                maxlength = a.getInt(attr, -1);
1022                break;
1023
1024            case com.android.internal.R.styleable.TextView_textScaleX:
1025                setTextScaleX(a.getFloat(attr, 1.0f));
1026                break;
1027
1028            case com.android.internal.R.styleable.TextView_freezesText:
1029                mFreezesText = a.getBoolean(attr, false);
1030                break;
1031
1032            case com.android.internal.R.styleable.TextView_shadowColor:
1033                shadowcolor = a.getInt(attr, 0);
1034                break;
1035
1036            case com.android.internal.R.styleable.TextView_shadowDx:
1037                dx = a.getFloat(attr, 0);
1038                break;
1039
1040            case com.android.internal.R.styleable.TextView_shadowDy:
1041                dy = a.getFloat(attr, 0);
1042                break;
1043
1044            case com.android.internal.R.styleable.TextView_shadowRadius:
1045                r = a.getFloat(attr, 0);
1046                break;
1047
1048            case com.android.internal.R.styleable.TextView_enabled:
1049                setEnabled(a.getBoolean(attr, isEnabled()));
1050                break;
1051
1052            case com.android.internal.R.styleable.TextView_textColorHighlight:
1053                textColorHighlight = a.getColor(attr, textColorHighlight);
1054                break;
1055
1056            case com.android.internal.R.styleable.TextView_textColor:
1057                textColor = a.getColorStateList(attr);
1058                break;
1059
1060            case com.android.internal.R.styleable.TextView_textColorHint:
1061                textColorHint = a.getColorStateList(attr);
1062                break;
1063
1064            case com.android.internal.R.styleable.TextView_textColorLink:
1065                textColorLink = a.getColorStateList(attr);
1066                break;
1067
1068            case com.android.internal.R.styleable.TextView_textSize:
1069                textSize = a.getDimensionPixelSize(attr, textSize);
1070                break;
1071
1072            case com.android.internal.R.styleable.TextView_typeface:
1073                typefaceIndex = a.getInt(attr, typefaceIndex);
1074                break;
1075
1076            case com.android.internal.R.styleable.TextView_textStyle:
1077                styleIndex = a.getInt(attr, styleIndex);
1078                break;
1079
1080            case com.android.internal.R.styleable.TextView_fontFamily:
1081                fontFamily = a.getString(attr);
1082                fontFamilyExplicit = true;
1083                break;
1084
1085            case com.android.internal.R.styleable.TextView_password:
1086                password = a.getBoolean(attr, password);
1087                break;
1088
1089            case com.android.internal.R.styleable.TextView_lineSpacingExtra:
1090                mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd);
1091                break;
1092
1093            case com.android.internal.R.styleable.TextView_lineSpacingMultiplier:
1094                mSpacingMult = a.getFloat(attr, mSpacingMult);
1095                break;
1096
1097            case com.android.internal.R.styleable.TextView_inputType:
1098                inputType = a.getInt(attr, EditorInfo.TYPE_NULL);
1099                break;
1100
1101            case com.android.internal.R.styleable.TextView_allowUndo:
1102                createEditorIfNeeded();
1103                mEditor.mAllowUndo = a.getBoolean(attr, true);
1104                break;
1105
1106            case com.android.internal.R.styleable.TextView_imeOptions:
1107                createEditorIfNeeded();
1108                mEditor.createInputContentTypeIfNeeded();
1109                mEditor.mInputContentType.imeOptions = a.getInt(attr,
1110                        mEditor.mInputContentType.imeOptions);
1111                break;
1112
1113            case com.android.internal.R.styleable.TextView_imeActionLabel:
1114                createEditorIfNeeded();
1115                mEditor.createInputContentTypeIfNeeded();
1116                mEditor.mInputContentType.imeActionLabel = a.getText(attr);
1117                break;
1118
1119            case com.android.internal.R.styleable.TextView_imeActionId:
1120                createEditorIfNeeded();
1121                mEditor.createInputContentTypeIfNeeded();
1122                mEditor.mInputContentType.imeActionId = a.getInt(attr,
1123                        mEditor.mInputContentType.imeActionId);
1124                break;
1125
1126            case com.android.internal.R.styleable.TextView_privateImeOptions:
1127                setPrivateImeOptions(a.getString(attr));
1128                break;
1129
1130            case com.android.internal.R.styleable.TextView_editorExtras:
1131                try {
1132                    setInputExtras(a.getResourceId(attr, 0));
1133                } catch (XmlPullParserException e) {
1134                    Log.w(LOG_TAG, "Failure reading input extras", e);
1135                } catch (IOException e) {
1136                    Log.w(LOG_TAG, "Failure reading input extras", e);
1137                }
1138                break;
1139
1140            case com.android.internal.R.styleable.TextView_textCursorDrawable:
1141                mCursorDrawableRes = a.getResourceId(attr, 0);
1142                break;
1143
1144            case com.android.internal.R.styleable.TextView_textSelectHandleLeft:
1145                mTextSelectHandleLeftRes = a.getResourceId(attr, 0);
1146                break;
1147
1148            case com.android.internal.R.styleable.TextView_textSelectHandleRight:
1149                mTextSelectHandleRightRes = a.getResourceId(attr, 0);
1150                break;
1151
1152            case com.android.internal.R.styleable.TextView_textSelectHandle:
1153                mTextSelectHandleRes = a.getResourceId(attr, 0);
1154                break;
1155
1156            case com.android.internal.R.styleable.TextView_textEditSuggestionItemLayout:
1157                mTextEditSuggestionItemLayout = a.getResourceId(attr, 0);
1158                break;
1159
1160            case com.android.internal.R.styleable.TextView_textEditSuggestionContainerLayout:
1161                mTextEditSuggestionContainerLayout = a.getResourceId(attr, 0);
1162                break;
1163
1164            case com.android.internal.R.styleable.TextView_textEditSuggestionHighlightStyle:
1165                mTextEditSuggestionHighlightStyle = a.getResourceId(attr, 0);
1166                break;
1167
1168            case com.android.internal.R.styleable.TextView_textIsSelectable:
1169                setTextIsSelectable(a.getBoolean(attr, false));
1170                break;
1171
1172            case com.android.internal.R.styleable.TextView_textAllCaps:
1173                allCaps = a.getBoolean(attr, false);
1174                break;
1175
1176            case com.android.internal.R.styleable.TextView_elegantTextHeight:
1177                elegant = a.getBoolean(attr, false);
1178                break;
1179
1180            case com.android.internal.R.styleable.TextView_letterSpacing:
1181                letterSpacing = a.getFloat(attr, 0);
1182                break;
1183
1184            case com.android.internal.R.styleable.TextView_fontFeatureSettings:
1185                fontFeatureSettings = a.getString(attr);
1186                break;
1187
1188            case com.android.internal.R.styleable.TextView_breakStrategy:
1189                mBreakStrategy = a.getInt(attr, Layout.BREAK_STRATEGY_SIMPLE);
1190                break;
1191
1192            case com.android.internal.R.styleable.TextView_hyphenationFrequency:
1193                mHyphenationFrequency = a.getInt(attr, Layout.HYPHENATION_FREQUENCY_NONE);
1194                break;
1195            }
1196        }
1197        a.recycle();
1198
1199        BufferType bufferType = BufferType.EDITABLE;
1200
1201        final int variation =
1202                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
1203        final boolean passwordInputType = variation
1204                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
1205        final boolean webPasswordInputType = variation
1206                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD);
1207        final boolean numberPasswordInputType = variation
1208                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
1209
1210        if (inputMethod != null) {
1211            Class<?> c;
1212
1213            try {
1214                c = Class.forName(inputMethod.toString());
1215            } catch (ClassNotFoundException ex) {
1216                throw new RuntimeException(ex);
1217            }
1218
1219            try {
1220                createEditorIfNeeded();
1221                mEditor.mKeyListener = (KeyListener) c.newInstance();
1222            } catch (InstantiationException ex) {
1223                throw new RuntimeException(ex);
1224            } catch (IllegalAccessException ex) {
1225                throw new RuntimeException(ex);
1226            }
1227            try {
1228                mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1229                        ? inputType
1230                        : mEditor.mKeyListener.getInputType();
1231            } catch (IncompatibleClassChangeError e) {
1232                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1233            }
1234        } else if (digits != null) {
1235            createEditorIfNeeded();
1236            mEditor.mKeyListener = DigitsKeyListener.getInstance(digits.toString());
1237            // If no input type was specified, we will default to generic
1238            // text, since we can't tell the IME about the set of digits
1239            // that was selected.
1240            mEditor.mInputType = inputType != EditorInfo.TYPE_NULL
1241                    ? inputType : EditorInfo.TYPE_CLASS_TEXT;
1242        } else if (inputType != EditorInfo.TYPE_NULL) {
1243            setInputType(inputType, true);
1244            // If set, the input type overrides what was set using the deprecated singleLine flag.
1245            singleLine = !isMultilineInputType(inputType);
1246        } else if (phone) {
1247            createEditorIfNeeded();
1248            mEditor.mKeyListener = DialerKeyListener.getInstance();
1249            mEditor.mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE;
1250        } else if (numeric != 0) {
1251            createEditorIfNeeded();
1252            mEditor.mKeyListener = DigitsKeyListener.getInstance((numeric & SIGNED) != 0,
1253                                                   (numeric & DECIMAL) != 0);
1254            inputType = EditorInfo.TYPE_CLASS_NUMBER;
1255            if ((numeric & SIGNED) != 0) {
1256                inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED;
1257            }
1258            if ((numeric & DECIMAL) != 0) {
1259                inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL;
1260            }
1261            mEditor.mInputType = inputType;
1262        } else if (autotext || autocap != -1) {
1263            TextKeyListener.Capitalize cap;
1264
1265            inputType = EditorInfo.TYPE_CLASS_TEXT;
1266
1267            switch (autocap) {
1268            case 1:
1269                cap = TextKeyListener.Capitalize.SENTENCES;
1270                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES;
1271                break;
1272
1273            case 2:
1274                cap = TextKeyListener.Capitalize.WORDS;
1275                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS;
1276                break;
1277
1278            case 3:
1279                cap = TextKeyListener.Capitalize.CHARACTERS;
1280                inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS;
1281                break;
1282
1283            default:
1284                cap = TextKeyListener.Capitalize.NONE;
1285                break;
1286            }
1287
1288            createEditorIfNeeded();
1289            mEditor.mKeyListener = TextKeyListener.getInstance(autotext, cap);
1290            mEditor.mInputType = inputType;
1291        } else if (isTextSelectable()) {
1292            // Prevent text changes from keyboard.
1293            if (mEditor != null) {
1294                mEditor.mKeyListener = null;
1295                mEditor.mInputType = EditorInfo.TYPE_NULL;
1296            }
1297            bufferType = BufferType.SPANNABLE;
1298            // So that selection can be changed using arrow keys and touch is handled.
1299            setMovementMethod(ArrowKeyMovementMethod.getInstance());
1300        } else if (editable) {
1301            createEditorIfNeeded();
1302            mEditor.mKeyListener = TextKeyListener.getInstance();
1303            mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1304        } else {
1305            if (mEditor != null) mEditor.mKeyListener = null;
1306
1307            switch (buffertype) {
1308                case 0:
1309                    bufferType = BufferType.NORMAL;
1310                    break;
1311                case 1:
1312                    bufferType = BufferType.SPANNABLE;
1313                    break;
1314                case 2:
1315                    bufferType = BufferType.EDITABLE;
1316                    break;
1317            }
1318        }
1319
1320        if (mEditor != null) mEditor.adjustInputType(password, passwordInputType,
1321                webPasswordInputType, numberPasswordInputType);
1322
1323        if (selectallonfocus) {
1324            createEditorIfNeeded();
1325            mEditor.mSelectAllOnFocus = true;
1326
1327            if (bufferType == BufferType.NORMAL)
1328                bufferType = BufferType.SPANNABLE;
1329        }
1330
1331        // Set up the tint (if needed) before setting the drawables so that it
1332        // gets applied correctly.
1333        if (drawableTint != null || drawableTintMode != null) {
1334            if (mDrawables == null) {
1335                mDrawables = new Drawables(context);
1336            }
1337            if (drawableTint != null) {
1338                mDrawables.mTintList = drawableTint;
1339                mDrawables.mHasTint = true;
1340            }
1341            if (drawableTintMode != null) {
1342                mDrawables.mTintMode = drawableTintMode;
1343                mDrawables.mHasTintMode = true;
1344            }
1345        }
1346
1347        // This call will save the initial left/right drawables
1348        setCompoundDrawablesWithIntrinsicBounds(
1349            drawableLeft, drawableTop, drawableRight, drawableBottom);
1350        setRelativeDrawablesIfNeeded(drawableStart, drawableEnd);
1351        setCompoundDrawablePadding(drawablePadding);
1352
1353        // Same as setSingleLine(), but make sure the transformation method and the maximum number
1354        // of lines of height are unchanged for multi-line TextViews.
1355        setInputTypeSingleLine(singleLine);
1356        applySingleLine(singleLine, singleLine, singleLine);
1357
1358        if (singleLine && getKeyListener() == null && ellipsize < 0) {
1359                ellipsize = 3; // END
1360        }
1361
1362        switch (ellipsize) {
1363            case 1:
1364                setEllipsize(TextUtils.TruncateAt.START);
1365                break;
1366            case 2:
1367                setEllipsize(TextUtils.TruncateAt.MIDDLE);
1368                break;
1369            case 3:
1370                setEllipsize(TextUtils.TruncateAt.END);
1371                break;
1372            case 4:
1373                if (ViewConfiguration.get(context).isFadingMarqueeEnabled()) {
1374                    setHorizontalFadingEdgeEnabled(true);
1375                    mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
1376                } else {
1377                    setHorizontalFadingEdgeEnabled(false);
1378                    mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
1379                }
1380                setEllipsize(TextUtils.TruncateAt.MARQUEE);
1381                break;
1382        }
1383
1384        setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000));
1385        setHintTextColor(textColorHint);
1386        setLinkTextColor(textColorLink);
1387        if (textColorHighlight != 0) {
1388            setHighlightColor(textColorHighlight);
1389        }
1390        setRawTextSize(textSize);
1391        setElegantTextHeight(elegant);
1392        setLetterSpacing(letterSpacing);
1393        setFontFeatureSettings(fontFeatureSettings);
1394
1395        if (allCaps) {
1396            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
1397        }
1398
1399        if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
1400            setTransformationMethod(PasswordTransformationMethod.getInstance());
1401            typefaceIndex = MONOSPACE;
1402        } else if (mEditor != null &&
1403                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
1404                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
1405            typefaceIndex = MONOSPACE;
1406        }
1407
1408        if (typefaceIndex != -1 && !fontFamilyExplicit) {
1409            fontFamily = null;
1410        }
1411        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
1412
1413        if (shadowcolor != 0) {
1414            setShadowLayer(r, dx, dy, shadowcolor);
1415        }
1416
1417        if (maxlength >= 0) {
1418            setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) });
1419        } else {
1420            setFilters(NO_FILTERS);
1421        }
1422
1423        setText(text, bufferType);
1424        if (hint != null) setHint(hint);
1425
1426        /*
1427         * Views are not normally focusable unless specified to be.
1428         * However, TextViews that have input or movement methods *are*
1429         * focusable by default.
1430         */
1431        a = context.obtainStyledAttributes(
1432                attrs, com.android.internal.R.styleable.View, defStyleAttr, defStyleRes);
1433
1434        boolean focusable = mMovement != null || getKeyListener() != null;
1435        boolean clickable = focusable || isClickable();
1436        boolean longClickable = focusable || isLongClickable();
1437
1438        n = a.getIndexCount();
1439        for (int i = 0; i < n; i++) {
1440            int attr = a.getIndex(i);
1441
1442            switch (attr) {
1443            case com.android.internal.R.styleable.View_focusable:
1444                focusable = a.getBoolean(attr, focusable);
1445                break;
1446
1447            case com.android.internal.R.styleable.View_clickable:
1448                clickable = a.getBoolean(attr, clickable);
1449                break;
1450
1451            case com.android.internal.R.styleable.View_longClickable:
1452                longClickable = a.getBoolean(attr, longClickable);
1453                break;
1454            }
1455        }
1456        a.recycle();
1457
1458        setFocusable(focusable);
1459        setClickable(clickable);
1460        setLongClickable(longClickable);
1461
1462        if (mEditor != null) mEditor.prepareCursorControllers();
1463
1464        // If not explicitly specified this view is important for accessibility.
1465        if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
1466            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
1467        }
1468    }
1469
1470    private int[] parseDimensionArray(TypedArray dimens) {
1471        if (dimens == null) {
1472            return null;
1473        }
1474        int[] result = new int[dimens.length()];
1475        for (int i = 0; i < result.length; i++) {
1476            result[i] = dimens.getDimensionPixelSize(i, 0);
1477        }
1478        return result;
1479    }
1480
1481    /**
1482     * @hide
1483     */
1484    @Override
1485    public void onActivityResult(int requestCode, int resultCode, Intent data) {
1486        if (requestCode == PROCESS_TEXT_REQUEST_CODE) {
1487            if (resultCode == Activity.RESULT_OK && data != null) {
1488                CharSequence result = data.getCharSequenceExtra(Intent.EXTRA_PROCESS_TEXT);
1489                if (result != null) {
1490                    if (isTextEditable()) {
1491                        replaceSelectionWithText(result);
1492                    } else {
1493                        if (result.length() > 0) {
1494                            Toast.makeText(getContext(), String.valueOf(result), Toast.LENGTH_LONG)
1495                                .show();
1496                        }
1497                    }
1498                }
1499            } else if (mText instanceof Spannable) {
1500                // Reset the selection.
1501                stopTextActionMode();
1502                Selection.setSelection((Spannable) mText, getSelectionStart(), getSelectionEnd());
1503            }
1504
1505            if (mEditor.hasSelectionController()) {
1506                mEditor.startSelectionActionMode();
1507            }
1508        }
1509    }
1510
1511    private void setTypefaceFromAttrs(String familyName, int typefaceIndex, int styleIndex) {
1512        Typeface tf = null;
1513        if (familyName != null) {
1514            tf = Typeface.create(familyName, styleIndex);
1515            if (tf != null) {
1516                setTypeface(tf);
1517                return;
1518            }
1519        }
1520        switch (typefaceIndex) {
1521            case SANS:
1522                tf = Typeface.SANS_SERIF;
1523                break;
1524
1525            case SERIF:
1526                tf = Typeface.SERIF;
1527                break;
1528
1529            case MONOSPACE:
1530                tf = Typeface.MONOSPACE;
1531                break;
1532        }
1533
1534        setTypeface(tf, styleIndex);
1535    }
1536
1537    private void setRelativeDrawablesIfNeeded(Drawable start, Drawable end) {
1538        boolean hasRelativeDrawables = (start != null) || (end != null);
1539        if (hasRelativeDrawables) {
1540            Drawables dr = mDrawables;
1541            if (dr == null) {
1542                mDrawables = dr = new Drawables(getContext());
1543            }
1544            mDrawables.mOverride = true;
1545            final Rect compoundRect = dr.mCompoundRect;
1546            int[] state = getDrawableState();
1547            if (start != null) {
1548                start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
1549                start.setState(state);
1550                start.copyBounds(compoundRect);
1551                start.setCallback(this);
1552
1553                dr.mDrawableStart = start;
1554                dr.mDrawableSizeStart = compoundRect.width();
1555                dr.mDrawableHeightStart = compoundRect.height();
1556            } else {
1557                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
1558            }
1559            if (end != null) {
1560                end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
1561                end.setState(state);
1562                end.copyBounds(compoundRect);
1563                end.setCallback(this);
1564
1565                dr.mDrawableEnd = end;
1566                dr.mDrawableSizeEnd = compoundRect.width();
1567                dr.mDrawableHeightEnd = compoundRect.height();
1568            } else {
1569                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
1570            }
1571            resetResolvedDrawables();
1572            resolveDrawables();
1573            applyCompoundDrawableTint();
1574        }
1575    }
1576
1577    @Override
1578    public void setEnabled(boolean enabled) {
1579        if (enabled == isEnabled()) {
1580            return;
1581        }
1582
1583        if (!enabled) {
1584            // Hide the soft input if the currently active TextView is disabled
1585            InputMethodManager imm = InputMethodManager.peekInstance();
1586            if (imm != null && imm.isActive(this)) {
1587                imm.hideSoftInputFromWindow(getWindowToken(), 0);
1588            }
1589        }
1590
1591        super.setEnabled(enabled);
1592
1593        if (enabled) {
1594            // Make sure IME is updated with current editor info.
1595            InputMethodManager imm = InputMethodManager.peekInstance();
1596            if (imm != null) imm.restartInput(this);
1597        }
1598
1599        // Will change text color
1600        if (mEditor != null) {
1601            mEditor.invalidateTextDisplayList();
1602            mEditor.prepareCursorControllers();
1603
1604            // start or stop the cursor blinking as appropriate
1605            mEditor.makeBlink();
1606        }
1607    }
1608
1609    /**
1610     * Sets the typeface and style in which the text should be displayed,
1611     * and turns on the fake bold and italic bits in the Paint if the
1612     * Typeface that you provided does not have all the bits in the
1613     * style that you specified.
1614     *
1615     * @attr ref android.R.styleable#TextView_typeface
1616     * @attr ref android.R.styleable#TextView_textStyle
1617     */
1618    public void setTypeface(Typeface tf, int style) {
1619        if (style > 0) {
1620            if (tf == null) {
1621                tf = Typeface.defaultFromStyle(style);
1622            } else {
1623                tf = Typeface.create(tf, style);
1624            }
1625
1626            setTypeface(tf);
1627            // now compute what (if any) algorithmic styling is needed
1628            int typefaceStyle = tf != null ? tf.getStyle() : 0;
1629            int need = style & ~typefaceStyle;
1630            mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0);
1631            mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0);
1632        } else {
1633            mTextPaint.setFakeBoldText(false);
1634            mTextPaint.setTextSkewX(0);
1635            setTypeface(tf);
1636        }
1637    }
1638
1639    /**
1640     * Subclasses override this to specify that they have a KeyListener
1641     * by default even if not specifically called for in the XML options.
1642     */
1643    protected boolean getDefaultEditable() {
1644        return false;
1645    }
1646
1647    /**
1648     * Subclasses override this to specify a default movement method.
1649     */
1650    protected MovementMethod getDefaultMovementMethod() {
1651        return null;
1652    }
1653
1654    /**
1655     * Return the text the TextView is displaying. If setText() was called with
1656     * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast
1657     * the return value from this method to Spannable or Editable, respectively.
1658     *
1659     * Note: The content of the return value should not be modified. If you want
1660     * a modifiable one, you should make your own copy first.
1661     *
1662     * @attr ref android.R.styleable#TextView_text
1663     */
1664    @ViewDebug.CapturedViewProperty
1665    public CharSequence getText() {
1666        return mText;
1667    }
1668
1669    /**
1670     * Returns the length, in characters, of the text managed by this TextView
1671     */
1672    public int length() {
1673        return mText.length();
1674    }
1675
1676    /**
1677     * Return the text the TextView is displaying as an Editable object.  If
1678     * the text is not editable, null is returned.
1679     *
1680     * @see #getText
1681     */
1682    public Editable getEditableText() {
1683        return (mText instanceof Editable) ? (Editable)mText : null;
1684    }
1685
1686    /**
1687     * @return the height of one standard line in pixels.  Note that markup
1688     * within the text can cause individual lines to be taller or shorter
1689     * than this height, and the layout may contain additional first-
1690     * or last-line padding.
1691     */
1692    public int getLineHeight() {
1693        return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd);
1694    }
1695
1696    /**
1697     * @return the Layout that is currently being used to display the text.
1698     * This can be null if the text or width has recently changes.
1699     */
1700    public final Layout getLayout() {
1701        return mLayout;
1702    }
1703
1704    /**
1705     * @return the Layout that is currently being used to display the hint text.
1706     * This can be null.
1707     */
1708    final Layout getHintLayout() {
1709        return mHintLayout;
1710    }
1711
1712    /**
1713     * Retrieve the {@link android.content.UndoManager} that is currently associated
1714     * with this TextView.  By default there is no associated UndoManager, so null
1715     * is returned.  One can be associated with the TextView through
1716     * {@link #setUndoManager(android.content.UndoManager, String)}
1717     *
1718     * @hide
1719     */
1720    public final UndoManager getUndoManager() {
1721        // TODO: Consider supporting a global undo manager.
1722        throw new UnsupportedOperationException("not implemented");
1723    }
1724
1725
1726    /**
1727     * @hide
1728     */
1729    @VisibleForTesting
1730    public final Editor getEditorForTesting() {
1731        return mEditor;
1732    }
1733
1734    /**
1735     * Associate an {@link android.content.UndoManager} with this TextView.  Once
1736     * done, all edit operations on the TextView will result in appropriate
1737     * {@link android.content.UndoOperation} objects pushed on the given UndoManager's
1738     * stack.
1739     *
1740     * @param undoManager The {@link android.content.UndoManager} to associate with
1741     * this TextView, or null to clear any existing association.
1742     * @param tag String tag identifying this particular TextView owner in the
1743     * UndoManager.  This is used to keep the correct association with the
1744     * {@link android.content.UndoOwner} of any operations inside of the UndoManager.
1745     *
1746     * @hide
1747     */
1748    public final void setUndoManager(UndoManager undoManager, String tag) {
1749        // TODO: Consider supporting a global undo manager. An implementation will need to:
1750        // * createEditorIfNeeded()
1751        // * Promote to BufferType.EDITABLE if needed.
1752        // * Update the UndoManager and UndoOwner.
1753        // Likewise it will need to be able to restore the default UndoManager.
1754        throw new UnsupportedOperationException("not implemented");
1755    }
1756
1757    /**
1758     * @return the current key listener for this TextView.
1759     * This will frequently be null for non-EditText TextViews.
1760     *
1761     * @attr ref android.R.styleable#TextView_numeric
1762     * @attr ref android.R.styleable#TextView_digits
1763     * @attr ref android.R.styleable#TextView_phoneNumber
1764     * @attr ref android.R.styleable#TextView_inputMethod
1765     * @attr ref android.R.styleable#TextView_capitalize
1766     * @attr ref android.R.styleable#TextView_autoText
1767     */
1768    public final KeyListener getKeyListener() {
1769        return mEditor == null ? null : mEditor.mKeyListener;
1770    }
1771
1772    /**
1773     * Sets the key listener to be used with this TextView.  This can be null
1774     * to disallow user input.  Note that this method has significant and
1775     * subtle interactions with soft keyboards and other input method:
1776     * see {@link KeyListener#getInputType() KeyListener.getContentType()}
1777     * for important details.  Calling this method will replace the current
1778     * content type of the text view with the content type returned by the
1779     * key listener.
1780     * <p>
1781     * Be warned that if you want a TextView with a key listener or movement
1782     * method not to be focusable, or if you want a TextView without a
1783     * key listener or movement method to be focusable, you must call
1784     * {@link #setFocusable} again after calling this to get the focusability
1785     * back the way you want it.
1786     *
1787     * @attr ref android.R.styleable#TextView_numeric
1788     * @attr ref android.R.styleable#TextView_digits
1789     * @attr ref android.R.styleable#TextView_phoneNumber
1790     * @attr ref android.R.styleable#TextView_inputMethod
1791     * @attr ref android.R.styleable#TextView_capitalize
1792     * @attr ref android.R.styleable#TextView_autoText
1793     */
1794    public void setKeyListener(KeyListener input) {
1795        setKeyListenerOnly(input);
1796        fixFocusableAndClickableSettings();
1797
1798        if (input != null) {
1799            createEditorIfNeeded();
1800            try {
1801                mEditor.mInputType = mEditor.mKeyListener.getInputType();
1802            } catch (IncompatibleClassChangeError e) {
1803                mEditor.mInputType = EditorInfo.TYPE_CLASS_TEXT;
1804            }
1805            // Change inputType, without affecting transformation.
1806            // No need to applySingleLine since mSingleLine is unchanged.
1807            setInputTypeSingleLine(mSingleLine);
1808        } else {
1809            if (mEditor != null) mEditor.mInputType = EditorInfo.TYPE_NULL;
1810        }
1811
1812        InputMethodManager imm = InputMethodManager.peekInstance();
1813        if (imm != null) imm.restartInput(this);
1814    }
1815
1816    private void setKeyListenerOnly(KeyListener input) {
1817        if (mEditor == null && input == null) return; // null is the default value
1818
1819        createEditorIfNeeded();
1820        if (mEditor.mKeyListener != input) {
1821            mEditor.mKeyListener = input;
1822            if (input != null && !(mText instanceof Editable)) {
1823                setText(mText);
1824            }
1825
1826            setFilters((Editable) mText, mFilters);
1827        }
1828    }
1829
1830    /**
1831     * @return the movement method being used for this TextView.
1832     * This will frequently be null for non-EditText TextViews.
1833     */
1834    public final MovementMethod getMovementMethod() {
1835        return mMovement;
1836    }
1837
1838    /**
1839     * Sets the movement method (arrow key handler) to be used for
1840     * this TextView.  This can be null to disallow using the arrow keys
1841     * to move the cursor or scroll the view.
1842     * <p>
1843     * Be warned that if you want a TextView with a key listener or movement
1844     * method not to be focusable, or if you want a TextView without a
1845     * key listener or movement method to be focusable, you must call
1846     * {@link #setFocusable} again after calling this to get the focusability
1847     * back the way you want it.
1848     */
1849    public final void setMovementMethod(MovementMethod movement) {
1850        if (mMovement != movement) {
1851            mMovement = movement;
1852
1853            if (movement != null && !(mText instanceof Spannable)) {
1854                setText(mText);
1855            }
1856
1857            fixFocusableAndClickableSettings();
1858
1859            // SelectionModifierCursorController depends on textCanBeSelected, which depends on
1860            // mMovement
1861            if (mEditor != null) mEditor.prepareCursorControllers();
1862        }
1863    }
1864
1865    private void fixFocusableAndClickableSettings() {
1866        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {
1867            setFocusable(true);
1868            setClickable(true);
1869            setLongClickable(true);
1870        } else {
1871            setFocusable(false);
1872            setClickable(false);
1873            setLongClickable(false);
1874        }
1875    }
1876
1877    /**
1878     * @return the current transformation method for this TextView.
1879     * This will frequently be null except for single-line and password
1880     * fields.
1881     *
1882     * @attr ref android.R.styleable#TextView_password
1883     * @attr ref android.R.styleable#TextView_singleLine
1884     */
1885    public final TransformationMethod getTransformationMethod() {
1886        return mTransformation;
1887    }
1888
1889    /**
1890     * Sets the transformation that is applied to the text that this
1891     * TextView is displaying.
1892     *
1893     * @attr ref android.R.styleable#TextView_password
1894     * @attr ref android.R.styleable#TextView_singleLine
1895     */
1896    public final void setTransformationMethod(TransformationMethod method) {
1897        if (method == mTransformation) {
1898            // Avoid the setText() below if the transformation is
1899            // the same.
1900            return;
1901        }
1902        if (mTransformation != null) {
1903            if (mText instanceof Spannable) {
1904                ((Spannable) mText).removeSpan(mTransformation);
1905            }
1906        }
1907
1908        mTransformation = method;
1909
1910        if (method instanceof TransformationMethod2) {
1911            TransformationMethod2 method2 = (TransformationMethod2) method;
1912            mAllowTransformationLengthChange = !isTextSelectable() && !(mText instanceof Editable);
1913            method2.setLengthChangesAllowed(mAllowTransformationLengthChange);
1914        } else {
1915            mAllowTransformationLengthChange = false;
1916        }
1917
1918        setText(mText);
1919
1920        if (hasPasswordTransformationMethod()) {
1921            notifyViewAccessibilityStateChangedIfNeeded(
1922                    AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
1923        }
1924    }
1925
1926    /**
1927     * Returns the top padding of the view, plus space for the top
1928     * Drawable if any.
1929     */
1930    public int getCompoundPaddingTop() {
1931        final Drawables dr = mDrawables;
1932        if (dr == null || dr.mShowing[Drawables.TOP] == null) {
1933            return mPaddingTop;
1934        } else {
1935            return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop;
1936        }
1937    }
1938
1939    /**
1940     * Returns the bottom padding of the view, plus space for the bottom
1941     * Drawable if any.
1942     */
1943    public int getCompoundPaddingBottom() {
1944        final Drawables dr = mDrawables;
1945        if (dr == null || dr.mShowing[Drawables.BOTTOM] == null) {
1946            return mPaddingBottom;
1947        } else {
1948            return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom;
1949        }
1950    }
1951
1952    /**
1953     * Returns the left padding of the view, plus space for the left
1954     * Drawable if any.
1955     */
1956    public int getCompoundPaddingLeft() {
1957        final Drawables dr = mDrawables;
1958        if (dr == null || dr.mShowing[Drawables.LEFT] == null) {
1959            return mPaddingLeft;
1960        } else {
1961            return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft;
1962        }
1963    }
1964
1965    /**
1966     * Returns the right padding of the view, plus space for the right
1967     * Drawable if any.
1968     */
1969    public int getCompoundPaddingRight() {
1970        final Drawables dr = mDrawables;
1971        if (dr == null || dr.mShowing[Drawables.RIGHT] == null) {
1972            return mPaddingRight;
1973        } else {
1974            return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight;
1975        }
1976    }
1977
1978    /**
1979     * Returns the start padding of the view, plus space for the start
1980     * Drawable if any.
1981     */
1982    public int getCompoundPaddingStart() {
1983        resolveDrawables();
1984        switch(getLayoutDirection()) {
1985            default:
1986            case LAYOUT_DIRECTION_LTR:
1987                return getCompoundPaddingLeft();
1988            case LAYOUT_DIRECTION_RTL:
1989                return getCompoundPaddingRight();
1990        }
1991    }
1992
1993    /**
1994     * Returns the end padding of the view, plus space for the end
1995     * Drawable if any.
1996     */
1997    public int getCompoundPaddingEnd() {
1998        resolveDrawables();
1999        switch(getLayoutDirection()) {
2000            default:
2001            case LAYOUT_DIRECTION_LTR:
2002                return getCompoundPaddingRight();
2003            case LAYOUT_DIRECTION_RTL:
2004                return getCompoundPaddingLeft();
2005        }
2006    }
2007
2008    /**
2009     * Returns the extended top padding of the view, including both the
2010     * top Drawable if any and any extra space to keep more than maxLines
2011     * of text from showing.  It is only valid to call this after measuring.
2012     */
2013    public int getExtendedPaddingTop() {
2014        if (mMaxMode != LINES) {
2015            return getCompoundPaddingTop();
2016        }
2017
2018        if (mLayout == null) {
2019            assumeLayout();
2020        }
2021
2022        if (mLayout.getLineCount() <= mMaximum) {
2023            return getCompoundPaddingTop();
2024        }
2025
2026        int top = getCompoundPaddingTop();
2027        int bottom = getCompoundPaddingBottom();
2028        int viewht = getHeight() - top - bottom;
2029        int layoutht = mLayout.getLineTop(mMaximum);
2030
2031        if (layoutht >= viewht) {
2032            return top;
2033        }
2034
2035        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2036        if (gravity == Gravity.TOP) {
2037            return top;
2038        } else if (gravity == Gravity.BOTTOM) {
2039            return top + viewht - layoutht;
2040        } else { // (gravity == Gravity.CENTER_VERTICAL)
2041            return top + (viewht - layoutht) / 2;
2042        }
2043    }
2044
2045    /**
2046     * Returns the extended bottom padding of the view, including both the
2047     * bottom Drawable if any and any extra space to keep more than maxLines
2048     * of text from showing.  It is only valid to call this after measuring.
2049     */
2050    public int getExtendedPaddingBottom() {
2051        if (mMaxMode != LINES) {
2052            return getCompoundPaddingBottom();
2053        }
2054
2055        if (mLayout == null) {
2056            assumeLayout();
2057        }
2058
2059        if (mLayout.getLineCount() <= mMaximum) {
2060            return getCompoundPaddingBottom();
2061        }
2062
2063        int top = getCompoundPaddingTop();
2064        int bottom = getCompoundPaddingBottom();
2065        int viewht = getHeight() - top - bottom;
2066        int layoutht = mLayout.getLineTop(mMaximum);
2067
2068        if (layoutht >= viewht) {
2069            return bottom;
2070        }
2071
2072        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
2073        if (gravity == Gravity.TOP) {
2074            return bottom + viewht - layoutht;
2075        } else if (gravity == Gravity.BOTTOM) {
2076            return bottom;
2077        } else { // (gravity == Gravity.CENTER_VERTICAL)
2078            return bottom + (viewht - layoutht) / 2;
2079        }
2080    }
2081
2082    /**
2083     * Returns the total left padding of the view, including the left
2084     * Drawable if any.
2085     */
2086    public int getTotalPaddingLeft() {
2087        return getCompoundPaddingLeft();
2088    }
2089
2090    /**
2091     * Returns the total right padding of the view, including the right
2092     * Drawable if any.
2093     */
2094    public int getTotalPaddingRight() {
2095        return getCompoundPaddingRight();
2096    }
2097
2098    /**
2099     * Returns the total start padding of the view, including the start
2100     * Drawable if any.
2101     */
2102    public int getTotalPaddingStart() {
2103        return getCompoundPaddingStart();
2104    }
2105
2106    /**
2107     * Returns the total end padding of the view, including the end
2108     * Drawable if any.
2109     */
2110    public int getTotalPaddingEnd() {
2111        return getCompoundPaddingEnd();
2112    }
2113
2114    /**
2115     * Returns the total top padding of the view, including the top
2116     * Drawable if any, the extra space to keep more than maxLines
2117     * from showing, and the vertical offset for gravity, if any.
2118     */
2119    public int getTotalPaddingTop() {
2120        return getExtendedPaddingTop() + getVerticalOffset(true);
2121    }
2122
2123    /**
2124     * Returns the total bottom padding of the view, including the bottom
2125     * Drawable if any, the extra space to keep more than maxLines
2126     * from showing, and the vertical offset for gravity, if any.
2127     */
2128    public int getTotalPaddingBottom() {
2129        return getExtendedPaddingBottom() + getBottomVerticalOffset(true);
2130    }
2131
2132    /**
2133     * Sets the Drawables (if any) to appear to the left of, above, to the
2134     * right of, and below the text. Use {@code null} if you do not want a
2135     * Drawable there. The Drawables must already have had
2136     * {@link Drawable#setBounds} called.
2137     * <p>
2138     * Calling this method will overwrite any Drawables previously set using
2139     * {@link #setCompoundDrawablesRelative} or related methods.
2140     *
2141     * @attr ref android.R.styleable#TextView_drawableLeft
2142     * @attr ref android.R.styleable#TextView_drawableTop
2143     * @attr ref android.R.styleable#TextView_drawableRight
2144     * @attr ref android.R.styleable#TextView_drawableBottom
2145     */
2146    public void setCompoundDrawables(@Nullable Drawable left, @Nullable Drawable top,
2147            @Nullable Drawable right, @Nullable Drawable bottom) {
2148        Drawables dr = mDrawables;
2149
2150        // We're switching to absolute, discard relative.
2151        if (dr != null) {
2152            if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2153            dr.mDrawableStart = null;
2154            if (dr.mDrawableEnd != null) dr.mDrawableEnd.setCallback(null);
2155            dr.mDrawableEnd = null;
2156            dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2157            dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2158        }
2159
2160        final boolean drawables = left != null || top != null || right != null || bottom != null;
2161        if (!drawables) {
2162            // Clearing drawables...  can we free the data structure?
2163            if (dr != null) {
2164                if (dr.mDrawablePadding == 0) {
2165                    mDrawables = null;
2166                } else {
2167                    // We need to retain the last set padding, so just clear
2168                    // out all of the fields in the existing structure.
2169                    for (int i = dr.mShowing.length - 1; i >= 0; i--) {
2170                        if (dr.mShowing[i] != null) {
2171                            dr.mShowing[i].setCallback(null);
2172                        }
2173                        dr.mShowing[i] = null;
2174                    }
2175                    dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2176                    dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2177                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2178                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2179                }
2180            }
2181        } else {
2182            if (dr == null) {
2183                mDrawables = dr = new Drawables(getContext());
2184            }
2185
2186            mDrawables.mOverride = false;
2187
2188            if (dr.mShowing[Drawables.LEFT] != left && dr.mShowing[Drawables.LEFT] != null) {
2189                dr.mShowing[Drawables.LEFT].setCallback(null);
2190            }
2191            dr.mShowing[Drawables.LEFT] = left;
2192
2193            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2194                dr.mShowing[Drawables.TOP].setCallback(null);
2195            }
2196            dr.mShowing[Drawables.TOP] = top;
2197
2198            if (dr.mShowing[Drawables.RIGHT] != right && dr.mShowing[Drawables.RIGHT] != null) {
2199                dr.mShowing[Drawables.RIGHT].setCallback(null);
2200            }
2201            dr.mShowing[Drawables.RIGHT] = right;
2202
2203            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2204                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2205            }
2206            dr.mShowing[Drawables.BOTTOM] = bottom;
2207
2208            final Rect compoundRect = dr.mCompoundRect;
2209            int[] state;
2210
2211            state = getDrawableState();
2212
2213            if (left != null) {
2214                left.setState(state);
2215                left.copyBounds(compoundRect);
2216                left.setCallback(this);
2217                dr.mDrawableSizeLeft = compoundRect.width();
2218                dr.mDrawableHeightLeft = compoundRect.height();
2219            } else {
2220                dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2221            }
2222
2223            if (right != null) {
2224                right.setState(state);
2225                right.copyBounds(compoundRect);
2226                right.setCallback(this);
2227                dr.mDrawableSizeRight = compoundRect.width();
2228                dr.mDrawableHeightRight = compoundRect.height();
2229            } else {
2230                dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2231            }
2232
2233            if (top != null) {
2234                top.setState(state);
2235                top.copyBounds(compoundRect);
2236                top.setCallback(this);
2237                dr.mDrawableSizeTop = compoundRect.height();
2238                dr.mDrawableWidthTop = compoundRect.width();
2239            } else {
2240                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2241            }
2242
2243            if (bottom != null) {
2244                bottom.setState(state);
2245                bottom.copyBounds(compoundRect);
2246                bottom.setCallback(this);
2247                dr.mDrawableSizeBottom = compoundRect.height();
2248                dr.mDrawableWidthBottom = compoundRect.width();
2249            } else {
2250                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2251            }
2252        }
2253
2254        // Save initial left/right drawables
2255        if (dr != null) {
2256            dr.mDrawableLeftInitial = left;
2257            dr.mDrawableRightInitial = right;
2258        }
2259
2260        resetResolvedDrawables();
2261        resolveDrawables();
2262        applyCompoundDrawableTint();
2263        invalidate();
2264        requestLayout();
2265    }
2266
2267    /**
2268     * Sets the Drawables (if any) to appear to the left of, above, to the
2269     * right of, and below the text. Use 0 if you do not want a Drawable there.
2270     * The Drawables' bounds will be set to their intrinsic bounds.
2271     * <p>
2272     * Calling this method will overwrite any Drawables previously set using
2273     * {@link #setCompoundDrawablesRelative} or related methods.
2274     *
2275     * @param left Resource identifier of the left Drawable.
2276     * @param top Resource identifier of the top Drawable.
2277     * @param right Resource identifier of the right Drawable.
2278     * @param bottom Resource identifier of the bottom Drawable.
2279     *
2280     * @attr ref android.R.styleable#TextView_drawableLeft
2281     * @attr ref android.R.styleable#TextView_drawableTop
2282     * @attr ref android.R.styleable#TextView_drawableRight
2283     * @attr ref android.R.styleable#TextView_drawableBottom
2284     */
2285    @android.view.RemotableViewMethod
2286    public void setCompoundDrawablesWithIntrinsicBounds(@DrawableRes int left,
2287            @DrawableRes int top, @DrawableRes int right, @DrawableRes int bottom) {
2288        final Context context = getContext();
2289        setCompoundDrawablesWithIntrinsicBounds(left != 0 ? context.getDrawable(left) : null,
2290                top != 0 ? context.getDrawable(top) : null,
2291                right != 0 ? context.getDrawable(right) : null,
2292                bottom != 0 ? context.getDrawable(bottom) : null);
2293    }
2294
2295    /**
2296     * Sets the Drawables (if any) to appear to the left of, above, to the
2297     * right of, and below the text. Use {@code null} if you do not want a
2298     * Drawable there. The Drawables' bounds will be set to their intrinsic
2299     * bounds.
2300     * <p>
2301     * Calling this method will overwrite any Drawables previously set using
2302     * {@link #setCompoundDrawablesRelative} or related methods.
2303     *
2304     * @attr ref android.R.styleable#TextView_drawableLeft
2305     * @attr ref android.R.styleable#TextView_drawableTop
2306     * @attr ref android.R.styleable#TextView_drawableRight
2307     * @attr ref android.R.styleable#TextView_drawableBottom
2308     */
2309    @android.view.RemotableViewMethod
2310    public void setCompoundDrawablesWithIntrinsicBounds(@Nullable Drawable left,
2311            @Nullable Drawable top, @Nullable Drawable right, @Nullable Drawable bottom) {
2312
2313        if (left != null) {
2314            left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight());
2315        }
2316        if (right != null) {
2317            right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight());
2318        }
2319        if (top != null) {
2320            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2321        }
2322        if (bottom != null) {
2323            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2324        }
2325        setCompoundDrawables(left, top, right, bottom);
2326    }
2327
2328    /**
2329     * Sets the Drawables (if any) to appear to the start of, above, to the end
2330     * of, and below the text. Use {@code null} if you do not want a Drawable
2331     * there. The Drawables must already have had {@link Drawable#setBounds}
2332     * called.
2333     * <p>
2334     * Calling this method will overwrite any Drawables previously set using
2335     * {@link #setCompoundDrawables} or related methods.
2336     *
2337     * @attr ref android.R.styleable#TextView_drawableStart
2338     * @attr ref android.R.styleable#TextView_drawableTop
2339     * @attr ref android.R.styleable#TextView_drawableEnd
2340     * @attr ref android.R.styleable#TextView_drawableBottom
2341     */
2342    @android.view.RemotableViewMethod
2343    public void setCompoundDrawablesRelative(@Nullable Drawable start, @Nullable Drawable top,
2344            @Nullable Drawable end, @Nullable Drawable bottom) {
2345        Drawables dr = mDrawables;
2346
2347        // We're switching to relative, discard absolute.
2348        if (dr != null) {
2349            if (dr.mShowing[Drawables.LEFT] != null) {
2350                dr.mShowing[Drawables.LEFT].setCallback(null);
2351            }
2352            dr.mShowing[Drawables.LEFT] = dr.mDrawableLeftInitial = null;
2353            if (dr.mShowing[Drawables.RIGHT] != null) {
2354                dr.mShowing[Drawables.RIGHT].setCallback(null);
2355            }
2356            dr.mShowing[Drawables.RIGHT] = dr.mDrawableRightInitial = null;
2357            dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0;
2358            dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0;
2359        }
2360
2361        final boolean drawables = start != null || top != null
2362                || end != null || bottom != null;
2363
2364        if (!drawables) {
2365            // Clearing drawables...  can we free the data structure?
2366            if (dr != null) {
2367                if (dr.mDrawablePadding == 0) {
2368                    mDrawables = null;
2369                } else {
2370                    // We need to retain the last set padding, so just clear
2371                    // out all of the fields in the existing structure.
2372                    if (dr.mDrawableStart != null) dr.mDrawableStart.setCallback(null);
2373                    dr.mDrawableStart = null;
2374                    if (dr.mShowing[Drawables.TOP] != null) {
2375                        dr.mShowing[Drawables.TOP].setCallback(null);
2376                    }
2377                    dr.mShowing[Drawables.TOP] = null;
2378                    if (dr.mDrawableEnd != null) {
2379                        dr.mDrawableEnd.setCallback(null);
2380                    }
2381                    dr.mDrawableEnd = null;
2382                    if (dr.mShowing[Drawables.BOTTOM] != null) {
2383                        dr.mShowing[Drawables.BOTTOM].setCallback(null);
2384                    }
2385                    dr.mShowing[Drawables.BOTTOM] = null;
2386                    dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2387                    dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2388                    dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2389                    dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2390                }
2391            }
2392        } else {
2393            if (dr == null) {
2394                mDrawables = dr = new Drawables(getContext());
2395            }
2396
2397            mDrawables.mOverride = true;
2398
2399            if (dr.mDrawableStart != start && dr.mDrawableStart != null) {
2400                dr.mDrawableStart.setCallback(null);
2401            }
2402            dr.mDrawableStart = start;
2403
2404            if (dr.mShowing[Drawables.TOP] != top && dr.mShowing[Drawables.TOP] != null) {
2405                dr.mShowing[Drawables.TOP].setCallback(null);
2406            }
2407            dr.mShowing[Drawables.TOP] = top;
2408
2409            if (dr.mDrawableEnd != end && dr.mDrawableEnd != null) {
2410                dr.mDrawableEnd.setCallback(null);
2411            }
2412            dr.mDrawableEnd = end;
2413
2414            if (dr.mShowing[Drawables.BOTTOM] != bottom && dr.mShowing[Drawables.BOTTOM] != null) {
2415                dr.mShowing[Drawables.BOTTOM].setCallback(null);
2416            }
2417            dr.mShowing[Drawables.BOTTOM] = bottom;
2418
2419            final Rect compoundRect = dr.mCompoundRect;
2420            int[] state;
2421
2422            state = getDrawableState();
2423
2424            if (start != null) {
2425                start.setState(state);
2426                start.copyBounds(compoundRect);
2427                start.setCallback(this);
2428                dr.mDrawableSizeStart = compoundRect.width();
2429                dr.mDrawableHeightStart = compoundRect.height();
2430            } else {
2431                dr.mDrawableSizeStart = dr.mDrawableHeightStart = 0;
2432            }
2433
2434            if (end != null) {
2435                end.setState(state);
2436                end.copyBounds(compoundRect);
2437                end.setCallback(this);
2438                dr.mDrawableSizeEnd = compoundRect.width();
2439                dr.mDrawableHeightEnd = compoundRect.height();
2440            } else {
2441                dr.mDrawableSizeEnd = dr.mDrawableHeightEnd = 0;
2442            }
2443
2444            if (top != null) {
2445                top.setState(state);
2446                top.copyBounds(compoundRect);
2447                top.setCallback(this);
2448                dr.mDrawableSizeTop = compoundRect.height();
2449                dr.mDrawableWidthTop = compoundRect.width();
2450            } else {
2451                dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0;
2452            }
2453
2454            if (bottom != null) {
2455                bottom.setState(state);
2456                bottom.copyBounds(compoundRect);
2457                bottom.setCallback(this);
2458                dr.mDrawableSizeBottom = compoundRect.height();
2459                dr.mDrawableWidthBottom = compoundRect.width();
2460            } else {
2461                dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0;
2462            }
2463        }
2464
2465        resetResolvedDrawables();
2466        resolveDrawables();
2467        invalidate();
2468        requestLayout();
2469    }
2470
2471    /**
2472     * Sets the Drawables (if any) to appear to the start of, above, to the end
2473     * of, and below the text. Use 0 if you do not want a Drawable there. The
2474     * Drawables' bounds will be set to their intrinsic bounds.
2475     * <p>
2476     * Calling this method will overwrite any Drawables previously set using
2477     * {@link #setCompoundDrawables} or related methods.
2478     *
2479     * @param start Resource identifier of the start Drawable.
2480     * @param top Resource identifier of the top Drawable.
2481     * @param end Resource identifier of the end Drawable.
2482     * @param bottom Resource identifier of the bottom Drawable.
2483     *
2484     * @attr ref android.R.styleable#TextView_drawableStart
2485     * @attr ref android.R.styleable#TextView_drawableTop
2486     * @attr ref android.R.styleable#TextView_drawableEnd
2487     * @attr ref android.R.styleable#TextView_drawableBottom
2488     */
2489    @android.view.RemotableViewMethod
2490    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@DrawableRes int start,
2491            @DrawableRes int top, @DrawableRes int end, @DrawableRes int bottom) {
2492        final Context context = getContext();
2493        setCompoundDrawablesRelativeWithIntrinsicBounds(
2494                start != 0 ? context.getDrawable(start) : null,
2495                top != 0 ? context.getDrawable(top) : null,
2496                end != 0 ? context.getDrawable(end) : null,
2497                bottom != 0 ? context.getDrawable(bottom) : null);
2498    }
2499
2500    /**
2501     * Sets the Drawables (if any) to appear to the start of, above, to the end
2502     * of, and below the text. Use {@code null} if you do not want a Drawable
2503     * there. The Drawables' bounds will be set to their intrinsic bounds.
2504     * <p>
2505     * Calling this method will overwrite any Drawables previously set using
2506     * {@link #setCompoundDrawables} or related methods.
2507     *
2508     * @attr ref android.R.styleable#TextView_drawableStart
2509     * @attr ref android.R.styleable#TextView_drawableTop
2510     * @attr ref android.R.styleable#TextView_drawableEnd
2511     * @attr ref android.R.styleable#TextView_drawableBottom
2512     */
2513    @android.view.RemotableViewMethod
2514    public void setCompoundDrawablesRelativeWithIntrinsicBounds(@Nullable Drawable start,
2515            @Nullable Drawable top, @Nullable Drawable end, @Nullable Drawable bottom) {
2516
2517        if (start != null) {
2518            start.setBounds(0, 0, start.getIntrinsicWidth(), start.getIntrinsicHeight());
2519        }
2520        if (end != null) {
2521            end.setBounds(0, 0, end.getIntrinsicWidth(), end.getIntrinsicHeight());
2522        }
2523        if (top != null) {
2524            top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight());
2525        }
2526        if (bottom != null) {
2527            bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight());
2528        }
2529        setCompoundDrawablesRelative(start, top, end, bottom);
2530    }
2531
2532    /**
2533     * Returns drawables for the left, top, right, and bottom borders.
2534     *
2535     * @attr ref android.R.styleable#TextView_drawableLeft
2536     * @attr ref android.R.styleable#TextView_drawableTop
2537     * @attr ref android.R.styleable#TextView_drawableRight
2538     * @attr ref android.R.styleable#TextView_drawableBottom
2539     */
2540    @NonNull
2541    public Drawable[] getCompoundDrawables() {
2542        final Drawables dr = mDrawables;
2543        if (dr != null) {
2544            return dr.mShowing.clone();
2545        } else {
2546            return new Drawable[] { null, null, null, null };
2547        }
2548    }
2549
2550    /**
2551     * Returns drawables for the start, top, end, and bottom borders.
2552     *
2553     * @attr ref android.R.styleable#TextView_drawableStart
2554     * @attr ref android.R.styleable#TextView_drawableTop
2555     * @attr ref android.R.styleable#TextView_drawableEnd
2556     * @attr ref android.R.styleable#TextView_drawableBottom
2557     */
2558    @NonNull
2559    public Drawable[] getCompoundDrawablesRelative() {
2560        final Drawables dr = mDrawables;
2561        if (dr != null) {
2562            return new Drawable[] {
2563                dr.mDrawableStart, dr.mShowing[Drawables.TOP],
2564                dr.mDrawableEnd, dr.mShowing[Drawables.BOTTOM]
2565            };
2566        } else {
2567            return new Drawable[] { null, null, null, null };
2568        }
2569    }
2570
2571    /**
2572     * Sets the size of the padding between the compound drawables and
2573     * the text.
2574     *
2575     * @attr ref android.R.styleable#TextView_drawablePadding
2576     */
2577    @android.view.RemotableViewMethod
2578    public void setCompoundDrawablePadding(int pad) {
2579        Drawables dr = mDrawables;
2580        if (pad == 0) {
2581            if (dr != null) {
2582                dr.mDrawablePadding = pad;
2583            }
2584        } else {
2585            if (dr == null) {
2586                mDrawables = dr = new Drawables(getContext());
2587            }
2588            dr.mDrawablePadding = pad;
2589        }
2590
2591        invalidate();
2592        requestLayout();
2593    }
2594
2595    /**
2596     * Returns the padding between the compound drawables and the text.
2597     *
2598     * @attr ref android.R.styleable#TextView_drawablePadding
2599     */
2600    public int getCompoundDrawablePadding() {
2601        final Drawables dr = mDrawables;
2602        return dr != null ? dr.mDrawablePadding : 0;
2603    }
2604
2605    /**
2606     * Applies a tint to the compound drawables. Does not modify the
2607     * current tint mode, which is {@link PorterDuff.Mode#SRC_IN} by default.
2608     * <p>
2609     * Subsequent calls to
2610     * {@link #setCompoundDrawables(Drawable, Drawable, Drawable, Drawable)}
2611     * and related methods will automatically mutate the drawables and apply
2612     * the specified tint and tint mode using
2613     * {@link Drawable#setTintList(ColorStateList)}.
2614     *
2615     * @param tint the tint to apply, may be {@code null} to clear tint
2616     *
2617     * @attr ref android.R.styleable#TextView_drawableTint
2618     * @see #getCompoundDrawableTintList()
2619     * @see Drawable#setTintList(ColorStateList)
2620     */
2621    public void setCompoundDrawableTintList(@Nullable ColorStateList tint) {
2622        if (mDrawables == null) {
2623            mDrawables = new Drawables(getContext());
2624        }
2625        mDrawables.mTintList = tint;
2626        mDrawables.mHasTint = true;
2627
2628        applyCompoundDrawableTint();
2629    }
2630
2631    /**
2632     * @return the tint applied to the compound drawables
2633     * @attr ref android.R.styleable#TextView_drawableTint
2634     * @see #setCompoundDrawableTintList(ColorStateList)
2635     */
2636    public ColorStateList getCompoundDrawableTintList() {
2637        return mDrawables != null ? mDrawables.mTintList : null;
2638    }
2639
2640    /**
2641     * Specifies the blending mode used to apply the tint specified by
2642     * {@link #setCompoundDrawableTintList(ColorStateList)} to the compound
2643     * drawables. The default mode is {@link PorterDuff.Mode#SRC_IN}.
2644     *
2645     * @param tintMode the blending mode used to apply the tint, may be
2646     *                 {@code null} to clear tint
2647     * @attr ref android.R.styleable#TextView_drawableTintMode
2648     * @see #setCompoundDrawableTintList(ColorStateList)
2649     * @see Drawable#setTintMode(PorterDuff.Mode)
2650     */
2651    public void setCompoundDrawableTintMode(@Nullable PorterDuff.Mode tintMode) {
2652        if (mDrawables == null) {
2653            mDrawables = new Drawables(getContext());
2654        }
2655        mDrawables.mTintMode = tintMode;
2656        mDrawables.mHasTintMode = true;
2657
2658        applyCompoundDrawableTint();
2659    }
2660
2661    /**
2662     * Returns the blending mode used to apply the tint to the compound
2663     * drawables, if specified.
2664     *
2665     * @return the blending mode used to apply the tint to the compound
2666     *         drawables
2667     * @attr ref android.R.styleable#TextView_drawableTintMode
2668     * @see #setCompoundDrawableTintMode(PorterDuff.Mode)
2669     */
2670    public PorterDuff.Mode getCompoundDrawableTintMode() {
2671        return mDrawables != null ? mDrawables.mTintMode : null;
2672    }
2673
2674    private void applyCompoundDrawableTint() {
2675        if (mDrawables == null) {
2676            return;
2677        }
2678
2679        if (mDrawables.mHasTint || mDrawables.mHasTintMode) {
2680            final ColorStateList tintList = mDrawables.mTintList;
2681            final PorterDuff.Mode tintMode = mDrawables.mTintMode;
2682            final boolean hasTint = mDrawables.mHasTint;
2683            final boolean hasTintMode = mDrawables.mHasTintMode;
2684            final int[] state = getDrawableState();
2685
2686            for (Drawable dr : mDrawables.mShowing) {
2687                if (dr == null) {
2688                    continue;
2689                }
2690
2691                if (dr == mDrawables.mDrawableError) {
2692                    // From a developer's perspective, the error drawable isn't
2693                    // a compound drawable. Don't apply the generic compound
2694                    // drawable tint to it.
2695                    continue;
2696                }
2697
2698                dr.mutate();
2699
2700                if (hasTint) {
2701                    dr.setTintList(tintList);
2702                }
2703
2704                if (hasTintMode) {
2705                    dr.setTintMode(tintMode);
2706                }
2707
2708                // The drawable (or one of its children) may not have been
2709                // stateful before applying the tint, so let's try again.
2710                if (dr.isStateful()) {
2711                    dr.setState(state);
2712                }
2713            }
2714        }
2715    }
2716
2717    @Override
2718    public void setPadding(int left, int top, int right, int bottom) {
2719        if (left != mPaddingLeft ||
2720            right != mPaddingRight ||
2721            top != mPaddingTop ||
2722            bottom != mPaddingBottom) {
2723            nullLayouts();
2724        }
2725
2726        // the super call will requestLayout()
2727        super.setPadding(left, top, right, bottom);
2728        invalidate();
2729    }
2730
2731    @Override
2732    public void setPaddingRelative(int start, int top, int end, int bottom) {
2733        if (start != getPaddingStart() ||
2734            end != getPaddingEnd() ||
2735            top != mPaddingTop ||
2736            bottom != mPaddingBottom) {
2737            nullLayouts();
2738        }
2739
2740        // the super call will requestLayout()
2741        super.setPaddingRelative(start, top, end, bottom);
2742        invalidate();
2743    }
2744
2745    /**
2746     * Gets the autolink mask of the text.  See {@link
2747     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
2748     * possible values.
2749     *
2750     * @attr ref android.R.styleable#TextView_autoLink
2751     */
2752    public final int getAutoLinkMask() {
2753        return mAutoLinkMask;
2754    }
2755
2756    /**
2757     * Sets the text appearance from the specified style resource.
2758     * <p>
2759     * Use a framework-defined {@code TextAppearance} style like
2760     * {@link android.R.style#TextAppearance_Material_Body1 @android:style/TextAppearance.Material.Body1}
2761     * or see {@link android.R.styleable#TextAppearance TextAppearance} for the
2762     * set of attributes that can be used in a custom style.
2763     *
2764     * @param resId the resource identifier of the style to apply
2765     * @attr ref android.R.styleable#TextView_textAppearance
2766     */
2767    @SuppressWarnings("deprecation")
2768    public void setTextAppearance(@StyleRes int resId) {
2769        setTextAppearance(mContext, resId);
2770    }
2771
2772    /**
2773     * Sets the text color, size, style, hint color, and highlight color
2774     * from the specified TextAppearance resource.
2775     *
2776     * @deprecated Use {@link #setTextAppearance(int)} instead.
2777     */
2778    @Deprecated
2779    public void setTextAppearance(Context context, @StyleRes int resId) {
2780        final TypedArray ta = context.obtainStyledAttributes(resId, R.styleable.TextAppearance);
2781
2782        final int textColorHighlight = ta.getColor(
2783                R.styleable.TextAppearance_textColorHighlight, 0);
2784        if (textColorHighlight != 0) {
2785            setHighlightColor(textColorHighlight);
2786        }
2787
2788        final ColorStateList textColor = ta.getColorStateList(R.styleable.TextAppearance_textColor);
2789        if (textColor != null) {
2790            setTextColor(textColor);
2791        }
2792
2793        final int textSize = ta.getDimensionPixelSize(R.styleable.TextAppearance_textSize, 0);
2794        if (textSize != 0) {
2795            setRawTextSize(textSize);
2796        }
2797
2798        final ColorStateList textColorHint = ta.getColorStateList(
2799                R.styleable.TextAppearance_textColorHint);
2800        if (textColorHint != null) {
2801            setHintTextColor(textColorHint);
2802        }
2803
2804        final ColorStateList textColorLink = ta.getColorStateList(
2805                R.styleable.TextAppearance_textColorLink);
2806        if (textColorLink != null) {
2807            setLinkTextColor(textColorLink);
2808        }
2809
2810        final String fontFamily = ta.getString(R.styleable.TextAppearance_fontFamily);
2811        final int typefaceIndex = ta.getInt(R.styleable.TextAppearance_typeface, -1);
2812        final int styleIndex = ta.getInt(R.styleable.TextAppearance_textStyle, -1);
2813        setTypefaceFromAttrs(fontFamily, typefaceIndex, styleIndex);
2814
2815        final int shadowColor = ta.getInt(R.styleable.TextAppearance_shadowColor, 0);
2816        if (shadowColor != 0) {
2817            final float dx = ta.getFloat(R.styleable.TextAppearance_shadowDx, 0);
2818            final float dy = ta.getFloat(R.styleable.TextAppearance_shadowDy, 0);
2819            final float r = ta.getFloat(R.styleable.TextAppearance_shadowRadius, 0);
2820            setShadowLayer(r, dx, dy, shadowColor);
2821        }
2822
2823        if (ta.getBoolean(R.styleable.TextAppearance_textAllCaps, false)) {
2824            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
2825        }
2826
2827        if (ta.hasValue(R.styleable.TextAppearance_elegantTextHeight)) {
2828            setElegantTextHeight(ta.getBoolean(
2829                R.styleable.TextAppearance_elegantTextHeight, false));
2830        }
2831
2832        if (ta.hasValue(R.styleable.TextAppearance_letterSpacing)) {
2833            setLetterSpacing(ta.getFloat(
2834                R.styleable.TextAppearance_letterSpacing, 0));
2835        }
2836
2837        if (ta.hasValue(R.styleable.TextAppearance_fontFeatureSettings)) {
2838            setFontFeatureSettings(ta.getString(
2839                R.styleable.TextAppearance_fontFeatureSettings));
2840        }
2841
2842        ta.recycle();
2843    }
2844
2845    /**
2846     * Get the default primary {@link Locale} of the text in this TextView. This will always be
2847     * the first member of {@link #getTextLocales()}.
2848     * @return the default primary {@link Locale} of the text in this TextView.
2849     */
2850    @NonNull
2851    public Locale getTextLocale() {
2852        return mTextPaint.getTextLocale();
2853    }
2854
2855    /**
2856     * Get the default {@link LocaleList} of the text in this TextView.
2857     * @return the default {@link LocaleList} of the text in this TextView.
2858     */
2859    @NonNull @Size(min=1)
2860    public LocaleList getTextLocales() {
2861        return mTextPaint.getTextLocales();
2862    }
2863
2864    /**
2865     * Set the default {@link LocaleList} of the text in this TextView to a one-member list
2866     * containing just the given value.
2867     *
2868     * @param locale the {@link Locale} for drawing text, must not be null.
2869     *
2870     * @see #setTextLocales
2871     */
2872    public void setTextLocale(@NonNull Locale locale) {
2873        mLocalesChanged = true;
2874        mTextPaint.setTextLocale(locale);
2875    }
2876
2877    /**
2878     * Set the default {@link LocaleList} of the text in this TextView to the given value.
2879     *
2880     * This value is used to choose appropriate typefaces for ambiguous characters (typically used
2881     * for CJK locales to disambiguate Hanzi/Kanji/Hanja characters). It also affects
2882     * other aspects of text display, including line breaking.
2883     *
2884     * @param locales the {@link LocaleList} for drawing text, must not be null or empty.
2885     *
2886     * @see Paint#setTextLocales
2887     */
2888    public void setTextLocales(@NonNull @Size(min=1) LocaleList locales) {
2889        mLocalesChanged = true;
2890        mTextPaint.setTextLocales(locales);
2891    }
2892
2893    @Override
2894    protected void onConfigurationChanged(Configuration newConfig) {
2895        super.onConfigurationChanged(newConfig);
2896        if (!mLocalesChanged) {
2897            mTextPaint.setTextLocales(LocaleList.getDefault());
2898        }
2899    }
2900
2901    /**
2902     * @return the size (in pixels) of the default text size in this TextView.
2903     */
2904    @ViewDebug.ExportedProperty(category = "text")
2905    public float getTextSize() {
2906        return mTextPaint.getTextSize();
2907    }
2908
2909    /**
2910     * @return the size (in scaled pixels) of thee default text size in this TextView.
2911     * @hide
2912     */
2913    @ViewDebug.ExportedProperty(category = "text")
2914    public float getScaledTextSize() {
2915        return mTextPaint.getTextSize() / mTextPaint.density;
2916    }
2917
2918    /** @hide */
2919    @ViewDebug.ExportedProperty(category = "text", mapping = {
2920            @ViewDebug.IntToString(from = Typeface.NORMAL, to = "NORMAL"),
2921            @ViewDebug.IntToString(from = Typeface.BOLD, to = "BOLD"),
2922            @ViewDebug.IntToString(from = Typeface.ITALIC, to = "ITALIC"),
2923            @ViewDebug.IntToString(from = Typeface.BOLD_ITALIC, to = "BOLD_ITALIC")
2924    })
2925    public int getTypefaceStyle() {
2926        Typeface typeface = mTextPaint.getTypeface();
2927        return typeface != null ? typeface.getStyle() : Typeface.NORMAL;
2928    }
2929
2930    /**
2931     * Set the default text size to the given value, interpreted as "scaled
2932     * pixel" units.  This size is adjusted based on the current density and
2933     * user font size preference.
2934     *
2935     * @param size The scaled pixel size.
2936     *
2937     * @attr ref android.R.styleable#TextView_textSize
2938     */
2939    @android.view.RemotableViewMethod
2940    public void setTextSize(float size) {
2941        setTextSize(TypedValue.COMPLEX_UNIT_SP, size);
2942    }
2943
2944    /**
2945     * Set the default text size to a given unit and value.  See {@link
2946     * TypedValue} for the possible dimension units.
2947     *
2948     * @param unit The desired dimension unit.
2949     * @param size The desired size in the given units.
2950     *
2951     * @attr ref android.R.styleable#TextView_textSize
2952     */
2953    public void setTextSize(int unit, float size) {
2954        Context c = getContext();
2955        Resources r;
2956
2957        if (c == null)
2958            r = Resources.getSystem();
2959        else
2960            r = c.getResources();
2961
2962        setRawTextSize(TypedValue.applyDimension(
2963                unit, size, r.getDisplayMetrics()));
2964    }
2965
2966    private void setRawTextSize(float size) {
2967        if (size != mTextPaint.getTextSize()) {
2968            mTextPaint.setTextSize(size);
2969
2970            if (mLayout != null) {
2971                nullLayouts();
2972                requestLayout();
2973                invalidate();
2974            }
2975        }
2976    }
2977
2978    /**
2979     * @return the extent by which text is currently being stretched
2980     * horizontally.  This will usually be 1.
2981     */
2982    public float getTextScaleX() {
2983        return mTextPaint.getTextScaleX();
2984    }
2985
2986    /**
2987     * Sets the extent by which text should be stretched horizontally.
2988     *
2989     * @attr ref android.R.styleable#TextView_textScaleX
2990     */
2991    @android.view.RemotableViewMethod
2992    public void setTextScaleX(float size) {
2993        if (size != mTextPaint.getTextScaleX()) {
2994            mUserSetTextScaleX = true;
2995            mTextPaint.setTextScaleX(size);
2996
2997            if (mLayout != null) {
2998                nullLayouts();
2999                requestLayout();
3000                invalidate();
3001            }
3002        }
3003    }
3004
3005    /**
3006     * Sets the typeface and style in which the text should be displayed.
3007     * Note that not all Typeface families actually have bold and italic
3008     * variants, so you may need to use
3009     * {@link #setTypeface(Typeface, int)} to get the appearance
3010     * that you actually want.
3011     *
3012     * @see #getTypeface()
3013     *
3014     * @attr ref android.R.styleable#TextView_fontFamily
3015     * @attr ref android.R.styleable#TextView_typeface
3016     * @attr ref android.R.styleable#TextView_textStyle
3017     */
3018    public void setTypeface(Typeface tf) {
3019        if (mTextPaint.getTypeface() != tf) {
3020            mTextPaint.setTypeface(tf);
3021
3022            if (mLayout != null) {
3023                nullLayouts();
3024                requestLayout();
3025                invalidate();
3026            }
3027        }
3028    }
3029
3030    /**
3031     * @return the current typeface and style in which the text is being
3032     * displayed.
3033     *
3034     * @see #setTypeface(Typeface)
3035     *
3036     * @attr ref android.R.styleable#TextView_fontFamily
3037     * @attr ref android.R.styleable#TextView_typeface
3038     * @attr ref android.R.styleable#TextView_textStyle
3039     */
3040    public Typeface getTypeface() {
3041        return mTextPaint.getTypeface();
3042    }
3043
3044    /**
3045     * Set the TextView's elegant height metrics flag. This setting selects font
3046     * variants that have not been compacted to fit Latin-based vertical
3047     * metrics, and also increases top and bottom bounds to provide more space.
3048     *
3049     * @param elegant set the paint's elegant metrics flag.
3050     *
3051     * @attr ref android.R.styleable#TextView_elegantTextHeight
3052     */
3053    public void setElegantTextHeight(boolean elegant) {
3054        mTextPaint.setElegantTextHeight(elegant);
3055    }
3056
3057    /**
3058     * @return the extent by which text is currently being letter-spaced.
3059     * This will normally be 0.
3060     *
3061     * @see #setLetterSpacing(float)
3062     * @see Paint#setLetterSpacing
3063     */
3064    public float getLetterSpacing() {
3065        return mTextPaint.getLetterSpacing();
3066    }
3067
3068    /**
3069     * Sets text letter-spacing.  The value is in 'EM' units.  Typical values
3070     * for slight expansion will be around 0.05.  Negative values tighten text.
3071     *
3072     * @see #getLetterSpacing()
3073     * @see Paint#getLetterSpacing
3074     *
3075     * @attr ref android.R.styleable#TextView_letterSpacing
3076     */
3077    @android.view.RemotableViewMethod
3078    public void setLetterSpacing(float letterSpacing) {
3079        if (letterSpacing != mTextPaint.getLetterSpacing()) {
3080            mTextPaint.setLetterSpacing(letterSpacing);
3081
3082            if (mLayout != null) {
3083                nullLayouts();
3084                requestLayout();
3085                invalidate();
3086            }
3087        }
3088    }
3089
3090    /**
3091     * @return the currently set font feature settings.  Default is null.
3092     *
3093     * @see #setFontFeatureSettings(String)
3094     * @see Paint#setFontFeatureSettings
3095     */
3096    @Nullable
3097    public String getFontFeatureSettings() {
3098        return mTextPaint.getFontFeatureSettings();
3099    }
3100
3101    /**
3102     * Sets the break strategy for breaking paragraphs into lines. The default value for
3103     * TextView is {@link Layout#BREAK_STRATEGY_HIGH_QUALITY}, and the default value for
3104     * EditText is {@link Layout#BREAK_STRATEGY_SIMPLE}, the latter to avoid the
3105     * text "dancing" when being edited.
3106     *
3107     * @attr ref android.R.styleable#TextView_breakStrategy
3108     * @see #getBreakStrategy()
3109     */
3110    public void setBreakStrategy(@Layout.BreakStrategy int breakStrategy) {
3111        mBreakStrategy = breakStrategy;
3112        if (mLayout != null) {
3113            nullLayouts();
3114            requestLayout();
3115            invalidate();
3116        }
3117    }
3118
3119    /**
3120     * @return the currently set break strategy.
3121     *
3122     * @attr ref android.R.styleable#TextView_breakStrategy
3123     * @see #setBreakStrategy(int)
3124     */
3125    @Layout.BreakStrategy
3126    public int getBreakStrategy() {
3127        return mBreakStrategy;
3128    }
3129
3130    /**
3131     * Sets the hyphenation frequency. The default value for both TextView and EditText, which is set
3132     * from the theme, is {@link Layout#HYPHENATION_FREQUENCY_NORMAL}.
3133     *
3134     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3135     * @see #getHyphenationFrequency()
3136     */
3137    public void setHyphenationFrequency(@Layout.HyphenationFrequency int hyphenationFrequency) {
3138        mHyphenationFrequency = hyphenationFrequency;
3139        if (mLayout != null) {
3140            nullLayouts();
3141            requestLayout();
3142            invalidate();
3143        }
3144    }
3145
3146    /**
3147     * @return the currently set hyphenation frequency.
3148     *
3149     * @attr ref android.R.styleable#TextView_hyphenationFrequency
3150     * @see #setHyphenationFrequency(int)
3151     */
3152    @Layout.HyphenationFrequency
3153    public int getHyphenationFrequency() {
3154        return mHyphenationFrequency;
3155    }
3156
3157    /**
3158     * Sets font feature settings.  The format is the same as the CSS
3159     * font-feature-settings attribute:
3160     * http://dev.w3.org/csswg/css-fonts/#propdef-font-feature-settings
3161     *
3162     * @param fontFeatureSettings font feature settings represented as CSS compatible string
3163     * @see #getFontFeatureSettings()
3164     * @see Paint#getFontFeatureSettings
3165     *
3166     * @attr ref android.R.styleable#TextView_fontFeatureSettings
3167     */
3168    @android.view.RemotableViewMethod
3169    public void setFontFeatureSettings(@Nullable String fontFeatureSettings) {
3170        if (fontFeatureSettings != mTextPaint.getFontFeatureSettings()) {
3171            mTextPaint.setFontFeatureSettings(fontFeatureSettings);
3172
3173            if (mLayout != null) {
3174                nullLayouts();
3175                requestLayout();
3176                invalidate();
3177            }
3178        }
3179    }
3180
3181
3182    /**
3183     * Sets the text color for all the states (normal, selected,
3184     * focused) to be this color.
3185     *
3186     * @see #setTextColor(ColorStateList)
3187     * @see #getTextColors()
3188     *
3189     * @attr ref android.R.styleable#TextView_textColor
3190     */
3191    @android.view.RemotableViewMethod
3192    public void setTextColor(@ColorInt int color) {
3193        mTextColor = ColorStateList.valueOf(color);
3194        updateTextColors();
3195    }
3196
3197    /**
3198     * Sets the text color.
3199     *
3200     * @see #setTextColor(int)
3201     * @see #getTextColors()
3202     * @see #setHintTextColor(ColorStateList)
3203     * @see #setLinkTextColor(ColorStateList)
3204     *
3205     * @attr ref android.R.styleable#TextView_textColor
3206     */
3207    public void setTextColor(ColorStateList colors) {
3208        if (colors == null) {
3209            throw new NullPointerException();
3210        }
3211
3212        mTextColor = colors;
3213        updateTextColors();
3214    }
3215
3216    /**
3217     * Gets the text colors for the different states (normal, selected, focused) of the TextView.
3218     *
3219     * @see #setTextColor(ColorStateList)
3220     * @see #setTextColor(int)
3221     *
3222     * @attr ref android.R.styleable#TextView_textColor
3223     */
3224    public final ColorStateList getTextColors() {
3225        return mTextColor;
3226    }
3227
3228    /**
3229     * <p>Return the current color selected for normal text.</p>
3230     *
3231     * @return Returns the current text color.
3232     */
3233    @ColorInt
3234    public final int getCurrentTextColor() {
3235        return mCurTextColor;
3236    }
3237
3238    /**
3239     * Sets the color used to display the selection highlight.
3240     *
3241     * @attr ref android.R.styleable#TextView_textColorHighlight
3242     */
3243    @android.view.RemotableViewMethod
3244    public void setHighlightColor(@ColorInt int color) {
3245        if (mHighlightColor != color) {
3246            mHighlightColor = color;
3247            invalidate();
3248        }
3249    }
3250
3251    /**
3252     * @return the color used to display the selection highlight
3253     *
3254     * @see #setHighlightColor(int)
3255     *
3256     * @attr ref android.R.styleable#TextView_textColorHighlight
3257     */
3258    @ColorInt
3259    public int getHighlightColor() {
3260        return mHighlightColor;
3261    }
3262
3263    /**
3264     * Sets whether the soft input method will be made visible when this
3265     * TextView gets focused. The default is true.
3266     */
3267    @android.view.RemotableViewMethod
3268    public final void setShowSoftInputOnFocus(boolean show) {
3269        createEditorIfNeeded();
3270        mEditor.mShowSoftInputOnFocus = show;
3271    }
3272
3273    /**
3274     * Returns whether the soft input method will be made visible when this
3275     * TextView gets focused. The default is true.
3276     */
3277    public final boolean getShowSoftInputOnFocus() {
3278        // When there is no Editor, return default true value
3279        return mEditor == null || mEditor.mShowSoftInputOnFocus;
3280    }
3281
3282    /**
3283     * Gives the text a shadow of the specified blur radius and color, the specified
3284     * distance from its drawn position.
3285     * <p>
3286     * The text shadow produced does not interact with the properties on view
3287     * that are responsible for real time shadows,
3288     * {@link View#getElevation() elevation} and
3289     * {@link View#getTranslationZ() translationZ}.
3290     *
3291     * @see Paint#setShadowLayer(float, float, float, int)
3292     *
3293     * @attr ref android.R.styleable#TextView_shadowColor
3294     * @attr ref android.R.styleable#TextView_shadowDx
3295     * @attr ref android.R.styleable#TextView_shadowDy
3296     * @attr ref android.R.styleable#TextView_shadowRadius
3297     */
3298    public void setShadowLayer(float radius, float dx, float dy, int color) {
3299        mTextPaint.setShadowLayer(radius, dx, dy, color);
3300
3301        mShadowRadius = radius;
3302        mShadowDx = dx;
3303        mShadowDy = dy;
3304        mShadowColor = color;
3305
3306        // Will change text clip region
3307        if (mEditor != null) mEditor.invalidateTextDisplayList();
3308        invalidate();
3309    }
3310
3311    /**
3312     * Gets the radius of the shadow layer.
3313     *
3314     * @return the radius of the shadow layer. If 0, the shadow layer is not visible
3315     *
3316     * @see #setShadowLayer(float, float, float, int)
3317     *
3318     * @attr ref android.R.styleable#TextView_shadowRadius
3319     */
3320    public float getShadowRadius() {
3321        return mShadowRadius;
3322    }
3323
3324    /**
3325     * @return the horizontal offset of the shadow layer
3326     *
3327     * @see #setShadowLayer(float, float, float, int)
3328     *
3329     * @attr ref android.R.styleable#TextView_shadowDx
3330     */
3331    public float getShadowDx() {
3332        return mShadowDx;
3333    }
3334
3335    /**
3336     * @return the vertical offset of the shadow layer
3337     *
3338     * @see #setShadowLayer(float, float, float, int)
3339     *
3340     * @attr ref android.R.styleable#TextView_shadowDy
3341     */
3342    public float getShadowDy() {
3343        return mShadowDy;
3344    }
3345
3346    /**
3347     * @return the color of the shadow layer
3348     *
3349     * @see #setShadowLayer(float, float, float, int)
3350     *
3351     * @attr ref android.R.styleable#TextView_shadowColor
3352     */
3353    @ColorInt
3354    public int getShadowColor() {
3355        return mShadowColor;
3356    }
3357
3358    /**
3359     * @return the base paint used for the text.  Please use this only to
3360     * consult the Paint's properties and not to change them.
3361     */
3362    public TextPaint getPaint() {
3363        return mTextPaint;
3364    }
3365
3366    /**
3367     * Sets the autolink mask of the text.  See {@link
3368     * android.text.util.Linkify#ALL Linkify.ALL} and peers for
3369     * possible values.
3370     *
3371     * @attr ref android.R.styleable#TextView_autoLink
3372     */
3373    @android.view.RemotableViewMethod
3374    public final void setAutoLinkMask(int mask) {
3375        mAutoLinkMask = mask;
3376    }
3377
3378    /**
3379     * Sets whether the movement method will automatically be set to {@link LinkMovementMethod}
3380     * after {@link #setText} or {@link #append} is called. The movement method is set if one of the
3381     * following is true:
3382     * <ul>
3383     * <li>{@link #setAutoLinkMask} has been set to nonzero and links are detected in
3384     * {@link #setText} or {@link #append}.
3385     * <li>The input for {@link #setText} or {@link #append} contains a {@link ClickableSpan}.
3386     * </ul>
3387     *
3388     * <p>This function does not have an immediate effect, movement method will be set only after a
3389     * call to {@link #setText} or {@link #append}. The default is true.</p>
3390     *
3391     * @attr ref android.R.styleable#TextView_linksClickable
3392     */
3393    @android.view.RemotableViewMethod
3394    public final void setLinksClickable(boolean whether) {
3395        mLinksClickable = whether;
3396    }
3397
3398    /**
3399     * Returns whether the movement method will automatically be set to {@link LinkMovementMethod}
3400     * after {@link #setText} or {@link #append} is called.
3401     *
3402     * See {@link #setLinksClickable} for details.
3403     *
3404     * <p>The default is true.</p>
3405     *
3406     * @see #setLinksClickable
3407     *
3408     * @attr ref android.R.styleable#TextView_linksClickable
3409     */
3410    public final boolean getLinksClickable() {
3411        return mLinksClickable;
3412    }
3413
3414    /**
3415     * Returns the list of URLSpans attached to the text
3416     * (by {@link Linkify} or otherwise) if any.  You can call
3417     * {@link URLSpan#getURL} on them to find where they link to
3418     * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd}
3419     * to find the region of the text they are attached to.
3420     */
3421    public URLSpan[] getUrls() {
3422        if (mText instanceof Spanned) {
3423            return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class);
3424        } else {
3425            return new URLSpan[0];
3426        }
3427    }
3428
3429    /**
3430     * Sets the color of the hint text for all the states (disabled, focussed, selected...) of this
3431     * TextView.
3432     *
3433     * @see #setHintTextColor(ColorStateList)
3434     * @see #getHintTextColors()
3435     * @see #setTextColor(int)
3436     *
3437     * @attr ref android.R.styleable#TextView_textColorHint
3438     */
3439    @android.view.RemotableViewMethod
3440    public final void setHintTextColor(@ColorInt int color) {
3441        mHintTextColor = ColorStateList.valueOf(color);
3442        updateTextColors();
3443    }
3444
3445    /**
3446     * Sets the color of the hint text.
3447     *
3448     * @see #getHintTextColors()
3449     * @see #setHintTextColor(int)
3450     * @see #setTextColor(ColorStateList)
3451     * @see #setLinkTextColor(ColorStateList)
3452     *
3453     * @attr ref android.R.styleable#TextView_textColorHint
3454     */
3455    public final void setHintTextColor(ColorStateList colors) {
3456        mHintTextColor = colors;
3457        updateTextColors();
3458    }
3459
3460    /**
3461     * @return the color of the hint text, for the different states of this TextView.
3462     *
3463     * @see #setHintTextColor(ColorStateList)
3464     * @see #setHintTextColor(int)
3465     * @see #setTextColor(ColorStateList)
3466     * @see #setLinkTextColor(ColorStateList)
3467     *
3468     * @attr ref android.R.styleable#TextView_textColorHint
3469     */
3470    public final ColorStateList getHintTextColors() {
3471        return mHintTextColor;
3472    }
3473
3474    /**
3475     * <p>Return the current color selected to paint the hint text.</p>
3476     *
3477     * @return Returns the current hint text color.
3478     */
3479    @ColorInt
3480    public final int getCurrentHintTextColor() {
3481        return mHintTextColor != null ? mCurHintTextColor : mCurTextColor;
3482    }
3483
3484    /**
3485     * Sets the color of links in the text.
3486     *
3487     * @see #setLinkTextColor(ColorStateList)
3488     * @see #getLinkTextColors()
3489     *
3490     * @attr ref android.R.styleable#TextView_textColorLink
3491     */
3492    @android.view.RemotableViewMethod
3493    public final void setLinkTextColor(@ColorInt int color) {
3494        mLinkTextColor = ColorStateList.valueOf(color);
3495        updateTextColors();
3496    }
3497
3498    /**
3499     * Sets the color of links in the text.
3500     *
3501     * @see #setLinkTextColor(int)
3502     * @see #getLinkTextColors()
3503     * @see #setTextColor(ColorStateList)
3504     * @see #setHintTextColor(ColorStateList)
3505     *
3506     * @attr ref android.R.styleable#TextView_textColorLink
3507     */
3508    public final void setLinkTextColor(ColorStateList colors) {
3509        mLinkTextColor = colors;
3510        updateTextColors();
3511    }
3512
3513    /**
3514     * @return the list of colors used to paint the links in the text, for the different states of
3515     * this TextView
3516     *
3517     * @see #setLinkTextColor(ColorStateList)
3518     * @see #setLinkTextColor(int)
3519     *
3520     * @attr ref android.R.styleable#TextView_textColorLink
3521     */
3522    public final ColorStateList getLinkTextColors() {
3523        return mLinkTextColor;
3524    }
3525
3526    /**
3527     * Sets the horizontal alignment of the text and the
3528     * vertical gravity that will be used when there is extra space
3529     * in the TextView beyond what is required for the text itself.
3530     *
3531     * @see android.view.Gravity
3532     * @attr ref android.R.styleable#TextView_gravity
3533     */
3534    public void setGravity(int gravity) {
3535        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
3536            gravity |= Gravity.START;
3537        }
3538        if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
3539            gravity |= Gravity.TOP;
3540        }
3541
3542        boolean newLayout = false;
3543
3544        if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) !=
3545            (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK)) {
3546            newLayout = true;
3547        }
3548
3549        if (gravity != mGravity) {
3550            invalidate();
3551        }
3552
3553        mGravity = gravity;
3554
3555        if (mLayout != null && newLayout) {
3556            // XXX this is heavy-handed because no actual content changes.
3557            int want = mLayout.getWidth();
3558            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
3559
3560            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
3561                          mRight - mLeft - getCompoundPaddingLeft() -
3562                          getCompoundPaddingRight(), true);
3563        }
3564    }
3565
3566    /**
3567     * Returns the horizontal and vertical alignment of this TextView.
3568     *
3569     * @see android.view.Gravity
3570     * @attr ref android.R.styleable#TextView_gravity
3571     */
3572    public int getGravity() {
3573        return mGravity;
3574    }
3575
3576    /**
3577     * @return the flags on the Paint being used to display the text.
3578     * @see Paint#getFlags
3579     */
3580    public int getPaintFlags() {
3581        return mTextPaint.getFlags();
3582    }
3583
3584    /**
3585     * Sets flags on the Paint being used to display the text and
3586     * reflows the text if they are different from the old flags.
3587     * @see Paint#setFlags
3588     */
3589    @android.view.RemotableViewMethod
3590    public void setPaintFlags(int flags) {
3591        if (mTextPaint.getFlags() != flags) {
3592            mTextPaint.setFlags(flags);
3593
3594            if (mLayout != null) {
3595                nullLayouts();
3596                requestLayout();
3597                invalidate();
3598            }
3599        }
3600    }
3601
3602    /**
3603     * Sets whether the text should be allowed to be wider than the
3604     * View is.  If false, it will be wrapped to the width of the View.
3605     *
3606     * @attr ref android.R.styleable#TextView_scrollHorizontally
3607     */
3608    public void setHorizontallyScrolling(boolean whether) {
3609        if (mHorizontallyScrolling != whether) {
3610            mHorizontallyScrolling = whether;
3611
3612            if (mLayout != null) {
3613                nullLayouts();
3614                requestLayout();
3615                invalidate();
3616            }
3617        }
3618    }
3619
3620    /**
3621     * Returns whether the text is allowed to be wider than the View is.
3622     * If false, the text will be wrapped to the width of the View.
3623     *
3624     * @attr ref android.R.styleable#TextView_scrollHorizontally
3625     * @hide
3626     */
3627    public boolean getHorizontallyScrolling() {
3628        return mHorizontallyScrolling;
3629    }
3630
3631    /**
3632     * Makes the TextView at least this many lines tall.
3633     *
3634     * Setting this value overrides any other (minimum) height setting. A single line TextView will
3635     * set this value to 1.
3636     *
3637     * @see #getMinLines()
3638     *
3639     * @attr ref android.R.styleable#TextView_minLines
3640     */
3641    @android.view.RemotableViewMethod
3642    public void setMinLines(int minlines) {
3643        mMinimum = minlines;
3644        mMinMode = LINES;
3645
3646        requestLayout();
3647        invalidate();
3648    }
3649
3650    /**
3651     * @return the minimum number of lines displayed in this TextView, or -1 if the minimum
3652     * height was set in pixels instead using {@link #setMinHeight(int) or #setHeight(int)}.
3653     *
3654     * @see #setMinLines(int)
3655     *
3656     * @attr ref android.R.styleable#TextView_minLines
3657     */
3658    public int getMinLines() {
3659        return mMinMode == LINES ? mMinimum : -1;
3660    }
3661
3662    /**
3663     * Makes the TextView at least this many pixels tall.
3664     *
3665     * Setting this value overrides any other (minimum) number of lines setting.
3666     *
3667     * @attr ref android.R.styleable#TextView_minHeight
3668     */
3669    @android.view.RemotableViewMethod
3670    public void setMinHeight(int minHeight) {
3671        mMinimum = minHeight;
3672        mMinMode = PIXELS;
3673
3674        requestLayout();
3675        invalidate();
3676    }
3677
3678    /**
3679     * @return the minimum height of this TextView expressed in pixels, or -1 if the minimum
3680     * height was set in number of lines instead using {@link #setMinLines(int) or #setLines(int)}.
3681     *
3682     * @see #setMinHeight(int)
3683     *
3684     * @attr ref android.R.styleable#TextView_minHeight
3685     */
3686    public int getMinHeight() {
3687        return mMinMode == PIXELS ? mMinimum : -1;
3688    }
3689
3690    /**
3691     * Makes the TextView at most this many lines tall.
3692     *
3693     * Setting this value overrides any other (maximum) height setting.
3694     *
3695     * @attr ref android.R.styleable#TextView_maxLines
3696     */
3697    @android.view.RemotableViewMethod
3698    public void setMaxLines(int maxlines) {
3699        mMaximum = maxlines;
3700        mMaxMode = LINES;
3701
3702        requestLayout();
3703        invalidate();
3704    }
3705
3706    /**
3707     * @return the maximum number of lines displayed in this TextView, or -1 if the maximum
3708     * height was set in pixels instead using {@link #setMaxHeight(int) or #setHeight(int)}.
3709     *
3710     * @see #setMaxLines(int)
3711     *
3712     * @attr ref android.R.styleable#TextView_maxLines
3713     */
3714    public int getMaxLines() {
3715        return mMaxMode == LINES ? mMaximum : -1;
3716    }
3717
3718    /**
3719     * Makes the TextView at most this many pixels tall.  This option is mutually exclusive with the
3720     * {@link #setMaxLines(int)} method.
3721     *
3722     * Setting this value overrides any other (maximum) number of lines setting.
3723     *
3724     * @attr ref android.R.styleable#TextView_maxHeight
3725     */
3726    @android.view.RemotableViewMethod
3727    public void setMaxHeight(int maxHeight) {
3728        mMaximum = maxHeight;
3729        mMaxMode = PIXELS;
3730
3731        requestLayout();
3732        invalidate();
3733    }
3734
3735    /**
3736     * @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
3737     * height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
3738     *
3739     * @see #setMaxHeight(int)
3740     *
3741     * @attr ref android.R.styleable#TextView_maxHeight
3742     */
3743    public int getMaxHeight() {
3744        return mMaxMode == PIXELS ? mMaximum : -1;
3745    }
3746
3747    /**
3748     * Makes the TextView exactly this many lines tall.
3749     *
3750     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3751     * height setting. A single line TextView will set this value to 1.
3752     *
3753     * @attr ref android.R.styleable#TextView_lines
3754     */
3755    @android.view.RemotableViewMethod
3756    public void setLines(int lines) {
3757        mMaximum = mMinimum = lines;
3758        mMaxMode = mMinMode = LINES;
3759
3760        requestLayout();
3761        invalidate();
3762    }
3763
3764    /**
3765     * Makes the TextView exactly this many pixels tall.
3766     * You could do the same thing by specifying this number in the
3767     * LayoutParams.
3768     *
3769     * Note that setting this value overrides any other (minimum / maximum) number of lines or
3770     * height setting.
3771     *
3772     * @attr ref android.R.styleable#TextView_height
3773     */
3774    @android.view.RemotableViewMethod
3775    public void setHeight(int pixels) {
3776        mMaximum = mMinimum = pixels;
3777        mMaxMode = mMinMode = PIXELS;
3778
3779        requestLayout();
3780        invalidate();
3781    }
3782
3783    /**
3784     * Makes the TextView at least this many ems wide
3785     *
3786     * @attr ref android.R.styleable#TextView_minEms
3787     */
3788    @android.view.RemotableViewMethod
3789    public void setMinEms(int minems) {
3790        mMinWidth = minems;
3791        mMinWidthMode = EMS;
3792
3793        requestLayout();
3794        invalidate();
3795    }
3796
3797    /**
3798     * @return the minimum width of the TextView, expressed in ems or -1 if the minimum width
3799     * was set in pixels instead (using {@link #setMinWidth(int)} or {@link #setWidth(int)}).
3800     *
3801     * @see #setMinEms(int)
3802     * @see #setEms(int)
3803     *
3804     * @attr ref android.R.styleable#TextView_minEms
3805     */
3806    public int getMinEms() {
3807        return mMinWidthMode == EMS ? mMinWidth : -1;
3808    }
3809
3810    /**
3811     * Makes the TextView at least this many pixels wide
3812     *
3813     * @attr ref android.R.styleable#TextView_minWidth
3814     */
3815    @android.view.RemotableViewMethod
3816    public void setMinWidth(int minpixels) {
3817        mMinWidth = minpixels;
3818        mMinWidthMode = PIXELS;
3819
3820        requestLayout();
3821        invalidate();
3822    }
3823
3824    /**
3825     * @return the minimum width of the TextView, in pixels or -1 if the minimum width
3826     * was set in ems instead (using {@link #setMinEms(int)} or {@link #setEms(int)}).
3827     *
3828     * @see #setMinWidth(int)
3829     * @see #setWidth(int)
3830     *
3831     * @attr ref android.R.styleable#TextView_minWidth
3832     */
3833    public int getMinWidth() {
3834        return mMinWidthMode == PIXELS ? mMinWidth : -1;
3835    }
3836
3837    /**
3838     * Makes the TextView at most this many ems wide
3839     *
3840     * @attr ref android.R.styleable#TextView_maxEms
3841     */
3842    @android.view.RemotableViewMethod
3843    public void setMaxEms(int maxems) {
3844        mMaxWidth = maxems;
3845        mMaxWidthMode = EMS;
3846
3847        requestLayout();
3848        invalidate();
3849    }
3850
3851    /**
3852     * @return the maximum width of the TextView, expressed in ems or -1 if the maximum width
3853     * was set in pixels instead (using {@link #setMaxWidth(int)} or {@link #setWidth(int)}).
3854     *
3855     * @see #setMaxEms(int)
3856     * @see #setEms(int)
3857     *
3858     * @attr ref android.R.styleable#TextView_maxEms
3859     */
3860    public int getMaxEms() {
3861        return mMaxWidthMode == EMS ? mMaxWidth : -1;
3862    }
3863
3864    /**
3865     * Makes the TextView at most this many pixels wide
3866     *
3867     * @attr ref android.R.styleable#TextView_maxWidth
3868     */
3869    @android.view.RemotableViewMethod
3870    public void setMaxWidth(int maxpixels) {
3871        mMaxWidth = maxpixels;
3872        mMaxWidthMode = PIXELS;
3873
3874        requestLayout();
3875        invalidate();
3876    }
3877
3878    /**
3879     * @return the maximum width of the TextView, in pixels or -1 if the maximum width
3880     * was set in ems instead (using {@link #setMaxEms(int)} or {@link #setEms(int)}).
3881     *
3882     * @see #setMaxWidth(int)
3883     * @see #setWidth(int)
3884     *
3885     * @attr ref android.R.styleable#TextView_maxWidth
3886     */
3887    public int getMaxWidth() {
3888        return mMaxWidthMode == PIXELS ? mMaxWidth : -1;
3889    }
3890
3891    /**
3892     * Makes the TextView exactly this many ems wide
3893     *
3894     * @see #setMaxEms(int)
3895     * @see #setMinEms(int)
3896     * @see #getMinEms()
3897     * @see #getMaxEms()
3898     *
3899     * @attr ref android.R.styleable#TextView_ems
3900     */
3901    @android.view.RemotableViewMethod
3902    public void setEms(int ems) {
3903        mMaxWidth = mMinWidth = ems;
3904        mMaxWidthMode = mMinWidthMode = EMS;
3905
3906        requestLayout();
3907        invalidate();
3908    }
3909
3910    /**
3911     * Makes the TextView exactly this many pixels wide.
3912     * You could do the same thing by specifying this number in the
3913     * LayoutParams.
3914     *
3915     * @see #setMaxWidth(int)
3916     * @see #setMinWidth(int)
3917     * @see #getMinWidth()
3918     * @see #getMaxWidth()
3919     *
3920     * @attr ref android.R.styleable#TextView_width
3921     */
3922    @android.view.RemotableViewMethod
3923    public void setWidth(int pixels) {
3924        mMaxWidth = mMinWidth = pixels;
3925        mMaxWidthMode = mMinWidthMode = PIXELS;
3926
3927        requestLayout();
3928        invalidate();
3929    }
3930
3931    /**
3932     * Sets line spacing for this TextView.  Each line will have its height
3933     * multiplied by <code>mult</code> and have <code>add</code> added to it.
3934     *
3935     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3936     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3937     */
3938    public void setLineSpacing(float add, float mult) {
3939        if (mSpacingAdd != add || mSpacingMult != mult) {
3940            mSpacingAdd = add;
3941            mSpacingMult = mult;
3942
3943            if (mLayout != null) {
3944                nullLayouts();
3945                requestLayout();
3946                invalidate();
3947            }
3948        }
3949    }
3950
3951    /**
3952     * Gets the line spacing multiplier
3953     *
3954     * @return the value by which each line's height is multiplied to get its actual height.
3955     *
3956     * @see #setLineSpacing(float, float)
3957     * @see #getLineSpacingExtra()
3958     *
3959     * @attr ref android.R.styleable#TextView_lineSpacingMultiplier
3960     */
3961    public float getLineSpacingMultiplier() {
3962        return mSpacingMult;
3963    }
3964
3965    /**
3966     * Gets the line spacing extra space
3967     *
3968     * @return the extra space that is added to the height of each lines of this TextView.
3969     *
3970     * @see #setLineSpacing(float, float)
3971     * @see #getLineSpacingMultiplier()
3972     *
3973     * @attr ref android.R.styleable#TextView_lineSpacingExtra
3974     */
3975    public float getLineSpacingExtra() {
3976        return mSpacingAdd;
3977    }
3978
3979    /**
3980     * Convenience method: Append the specified text to the TextView's
3981     * display buffer, upgrading it to BufferType.EDITABLE if it was
3982     * not already editable.
3983     */
3984    public final void append(CharSequence text) {
3985        append(text, 0, text.length());
3986    }
3987
3988    /**
3989     * Convenience method: Append the specified text slice to the TextView's
3990     * display buffer, upgrading it to BufferType.EDITABLE if it was
3991     * not already editable.
3992     */
3993    public void append(CharSequence text, int start, int end) {
3994        if (!(mText instanceof Editable)) {
3995            setText(mText, BufferType.EDITABLE);
3996        }
3997
3998        ((Editable) mText).append(text, start, end);
3999
4000        boolean hasClickableSpans = false;
4001        if (mAutoLinkMask != 0) {
4002            hasClickableSpans = Linkify.addLinks((Spannable) mText, mAutoLinkMask);
4003        } else if (mLinksClickable && text instanceof Spanned) {
4004            ClickableSpan[] clickableSpans =
4005                    ((Spanned) text).getSpans(0, text.length(), ClickableSpan.class);
4006            hasClickableSpans = clickableSpans != null && clickableSpans.length > 0;
4007        }
4008
4009        // Do not change the movement method for text that supports text selection as it
4010        // would prevent an arbitrary cursor displacement.
4011        if (hasClickableSpans && mLinksClickable && !textCanBeSelected()) {
4012            setMovementMethod(LinkMovementMethod.getInstance());
4013        }
4014    }
4015
4016    private void updateTextColors() {
4017        boolean inval = false;
4018        int color = mTextColor.getColorForState(getDrawableState(), 0);
4019        if (color != mCurTextColor) {
4020            mCurTextColor = color;
4021            inval = true;
4022        }
4023        if (mLinkTextColor != null) {
4024            color = mLinkTextColor.getColorForState(getDrawableState(), 0);
4025            if (color != mTextPaint.linkColor) {
4026                mTextPaint.linkColor = color;
4027                inval = true;
4028            }
4029        }
4030        if (mHintTextColor != null) {
4031            color = mHintTextColor.getColorForState(getDrawableState(), 0);
4032            if (color != mCurHintTextColor) {
4033                mCurHintTextColor = color;
4034                if (mText.length() == 0) {
4035                    inval = true;
4036                }
4037            }
4038        }
4039        if (inval) {
4040            // Text needs to be redrawn with the new color
4041            if (mEditor != null) mEditor.invalidateTextDisplayList();
4042            invalidate();
4043        }
4044    }
4045
4046    @Override
4047    protected void drawableStateChanged() {
4048        super.drawableStateChanged();
4049
4050        if (mTextColor != null && mTextColor.isStateful()
4051                || (mHintTextColor != null && mHintTextColor.isStateful())
4052                || (mLinkTextColor != null && mLinkTextColor.isStateful())) {
4053            updateTextColors();
4054        }
4055
4056        if (mDrawables != null) {
4057            final int[] state = getDrawableState();
4058            for (Drawable dr : mDrawables.mShowing) {
4059                if (dr != null && dr.isStateful() && dr.setState(state)) {
4060                    invalidateDrawable(dr);
4061                }
4062            }
4063        }
4064    }
4065
4066    @Override
4067    public void drawableHotspotChanged(float x, float y) {
4068        super.drawableHotspotChanged(x, y);
4069
4070        if (mDrawables != null) {
4071            for (Drawable dr : mDrawables.mShowing) {
4072                if (dr != null) {
4073                    dr.setHotspot(x, y);
4074                }
4075            }
4076        }
4077    }
4078
4079    @Override
4080    public Parcelable onSaveInstanceState() {
4081        Parcelable superState = super.onSaveInstanceState();
4082
4083        // Save state if we are forced to
4084        boolean save = mFreezesText;
4085        int start = 0;
4086        int end = 0;
4087
4088        if (mText != null) {
4089            start = getSelectionStart();
4090            end = getSelectionEnd();
4091            if (start >= 0 || end >= 0) {
4092                // Or save state if there is a selection
4093                save = true;
4094            }
4095        }
4096
4097        if (save) {
4098            SavedState ss = new SavedState(superState);
4099            // XXX Should also save the current scroll position!
4100            ss.selStart = start;
4101            ss.selEnd = end;
4102
4103            if (mText instanceof Spanned) {
4104                Spannable sp = new SpannableStringBuilder(mText);
4105
4106                if (mEditor != null) {
4107                    removeMisspelledSpans(sp);
4108                    sp.removeSpan(mEditor.mSuggestionRangeSpan);
4109                }
4110
4111                ss.text = sp;
4112            } else {
4113                ss.text = mText.toString();
4114            }
4115
4116            if (isFocused() && start >= 0 && end >= 0) {
4117                ss.frozenWithFocus = true;
4118            }
4119
4120            ss.error = getError();
4121
4122            if (mEditor != null) {
4123                ss.editorState = mEditor.saveInstanceState();
4124            }
4125            return ss;
4126        }
4127
4128        return superState;
4129    }
4130
4131    void removeMisspelledSpans(Spannable spannable) {
4132        SuggestionSpan[] suggestionSpans = spannable.getSpans(0, spannable.length(),
4133                SuggestionSpan.class);
4134        for (int i = 0; i < suggestionSpans.length; i++) {
4135            int flags = suggestionSpans[i].getFlags();
4136            if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0
4137                    && (flags & SuggestionSpan.FLAG_MISSPELLED) != 0) {
4138                spannable.removeSpan(suggestionSpans[i]);
4139            }
4140        }
4141    }
4142
4143    @Override
4144    public void onRestoreInstanceState(Parcelable state) {
4145        if (!(state instanceof SavedState)) {
4146            super.onRestoreInstanceState(state);
4147            return;
4148        }
4149
4150        SavedState ss = (SavedState)state;
4151        super.onRestoreInstanceState(ss.getSuperState());
4152
4153        // XXX restore buffer type too, as well as lots of other stuff
4154        if (ss.text != null) {
4155            setText(ss.text);
4156        }
4157
4158        if (ss.selStart >= 0 && ss.selEnd >= 0) {
4159            if (mText instanceof Spannable) {
4160                int len = mText.length();
4161
4162                if (ss.selStart > len || ss.selEnd > len) {
4163                    String restored = "";
4164
4165                    if (ss.text != null) {
4166                        restored = "(restored) ";
4167                    }
4168
4169                    Log.e(LOG_TAG, "Saved cursor position " + ss.selStart +
4170                          "/" + ss.selEnd + " out of range for " + restored +
4171                          "text " + mText);
4172                } else {
4173                    Selection.setSelection((Spannable) mText, ss.selStart, ss.selEnd);
4174
4175                    if (ss.frozenWithFocus) {
4176                        createEditorIfNeeded();
4177                        mEditor.mFrozenWithFocus = true;
4178                    }
4179                }
4180            }
4181        }
4182
4183        if (ss.error != null) {
4184            final CharSequence error = ss.error;
4185            // Display the error later, after the first layout pass
4186            post(new Runnable() {
4187                public void run() {
4188                    if (mEditor == null || !mEditor.mErrorWasChanged) {
4189                        setError(error);
4190                    }
4191                }
4192            });
4193        }
4194
4195        if (ss.editorState != null) {
4196            createEditorIfNeeded();
4197            mEditor.restoreInstanceState(ss.editorState);
4198        }
4199    }
4200
4201    /**
4202     * Control whether this text view saves its entire text contents when
4203     * freezing to an icicle, in addition to dynamic state such as cursor
4204     * position.  By default this is false, not saving the text.  Set to true
4205     * if the text in the text view is not being saved somewhere else in
4206     * persistent storage (such as in a content provider) so that if the
4207     * view is later thawed the user will not lose their data.
4208     *
4209     * @param freezesText Controls whether a frozen icicle should include the
4210     * entire text data: true to include it, false to not.
4211     *
4212     * @attr ref android.R.styleable#TextView_freezesText
4213     */
4214    @android.view.RemotableViewMethod
4215    public void setFreezesText(boolean freezesText) {
4216        mFreezesText = freezesText;
4217    }
4218
4219    /**
4220     * Return whether this text view is including its entire text contents
4221     * in frozen icicles.
4222     *
4223     * @return Returns true if text is included, false if it isn't.
4224     *
4225     * @see #setFreezesText
4226     */
4227    public boolean getFreezesText() {
4228        return mFreezesText;
4229    }
4230
4231    ///////////////////////////////////////////////////////////////////////////
4232
4233    /**
4234     * Sets the Factory used to create new Editables.
4235     */
4236    public final void setEditableFactory(Editable.Factory factory) {
4237        mEditableFactory = factory;
4238        setText(mText);
4239    }
4240
4241    /**
4242     * Sets the Factory used to create new Spannables.
4243     */
4244    public final void setSpannableFactory(Spannable.Factory factory) {
4245        mSpannableFactory = factory;
4246        setText(mText);
4247    }
4248
4249    /**
4250     * Sets the string value of the TextView. TextView <em>does not</em> accept
4251     * HTML-like formatting, which you can do with text strings in XML resource files.
4252     * To style your strings, attach android.text.style.* objects to a
4253     * {@link android.text.SpannableString SpannableString}, or see the
4254     * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources">
4255     * Available Resource Types</a> documentation for an example of setting
4256     * formatted text in the XML resource file.
4257     *
4258     * @attr ref android.R.styleable#TextView_text
4259     */
4260    @android.view.RemotableViewMethod
4261    public final void setText(CharSequence text) {
4262        setText(text, mBufferType);
4263    }
4264
4265    /**
4266     * Like {@link #setText(CharSequence)},
4267     * except that the cursor position (if any) is retained in the new text.
4268     *
4269     * @param text The new text to place in the text view.
4270     *
4271     * @see #setText(CharSequence)
4272     */
4273    @android.view.RemotableViewMethod
4274    public final void setTextKeepState(CharSequence text) {
4275        setTextKeepState(text, mBufferType);
4276    }
4277
4278    /**
4279     * Sets the text that this TextView is to display (see
4280     * {@link #setText(CharSequence)}) and also sets whether it is stored
4281     * in a styleable/spannable buffer and whether it is editable.
4282     *
4283     * @attr ref android.R.styleable#TextView_text
4284     * @attr ref android.R.styleable#TextView_bufferType
4285     */
4286    public void setText(CharSequence text, BufferType type) {
4287        setText(text, type, true, 0);
4288
4289        if (mCharWrapper != null) {
4290            mCharWrapper.mChars = null;
4291        }
4292    }
4293
4294    private void setText(CharSequence text, BufferType type,
4295                         boolean notifyBefore, int oldlen) {
4296        if (text == null) {
4297            text = "";
4298        }
4299
4300        // If suggestions are not enabled, remove the suggestion spans from the text
4301        if (!isSuggestionsEnabled()) {
4302            text = removeSuggestionSpans(text);
4303        }
4304
4305        if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f);
4306
4307        if (text instanceof Spanned &&
4308            ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) {
4309            if (ViewConfiguration.get(mContext).isFadingMarqueeEnabled()) {
4310                setHorizontalFadingEdgeEnabled(true);
4311                mMarqueeFadeMode = MARQUEE_FADE_NORMAL;
4312            } else {
4313                setHorizontalFadingEdgeEnabled(false);
4314                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
4315            }
4316            setEllipsize(TextUtils.TruncateAt.MARQUEE);
4317        }
4318
4319        int n = mFilters.length;
4320        for (int i = 0; i < n; i++) {
4321            CharSequence out = mFilters[i].filter(text, 0, text.length(), EMPTY_SPANNED, 0, 0);
4322            if (out != null) {
4323                text = out;
4324            }
4325        }
4326
4327        if (notifyBefore) {
4328            if (mText != null) {
4329                oldlen = mText.length();
4330                sendBeforeTextChanged(mText, 0, oldlen, text.length());
4331            } else {
4332                sendBeforeTextChanged("", 0, 0, text.length());
4333            }
4334        }
4335
4336        boolean needEditableForNotification = false;
4337
4338        if (mListeners != null && mListeners.size() != 0) {
4339            needEditableForNotification = true;
4340        }
4341
4342        if (type == BufferType.EDITABLE || getKeyListener() != null ||
4343                needEditableForNotification) {
4344            createEditorIfNeeded();
4345            mEditor.forgetUndoRedo();
4346            Editable t = mEditableFactory.newEditable(text);
4347            text = t;
4348            setFilters(t, mFilters);
4349            InputMethodManager imm = InputMethodManager.peekInstance();
4350            if (imm != null) imm.restartInput(this);
4351        } else if (type == BufferType.SPANNABLE || mMovement != null) {
4352            text = mSpannableFactory.newSpannable(text);
4353        } else if (!(text instanceof CharWrapper)) {
4354            text = TextUtils.stringOrSpannedString(text);
4355        }
4356
4357        boolean hasClickableSpans = false;
4358        if (mAutoLinkMask != 0) {
4359            Spannable s2;
4360
4361            if (type == BufferType.EDITABLE || text instanceof Spannable) {
4362                s2 = (Spannable) text;
4363            } else {
4364                s2 = mSpannableFactory.newSpannable(text);
4365            }
4366
4367            hasClickableSpans = Linkify.addLinks(s2, mAutoLinkMask);
4368            if (hasClickableSpans) {
4369                text = s2;
4370            }
4371        } else if (mLinksClickable && text instanceof Spanned) {
4372            ClickableSpan[] clickableSpans =
4373                    ((Spanned) text).getSpans(0, text.length(), ClickableSpan.class);
4374            hasClickableSpans = clickableSpans != null && clickableSpans.length > 0;
4375            if (hasClickableSpans && !(text instanceof Spannable)) {
4376                text = mSpannableFactory.newSpannable(text);
4377            }
4378        }
4379
4380        if (hasClickableSpans) {
4381            type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE;
4382            /*
4383             * We must go ahead and set the text before changing the
4384             * movement method, because setMovementMethod() may call
4385             * setText() again to try to upgrade the buffer type.
4386             */
4387            mText = text;
4388
4389            // Do not change the movement method for text that supports text selection as it
4390            // would prevent an arbitrary cursor displacement.
4391            if (mLinksClickable && !textCanBeSelected()) {
4392                setMovementMethod(LinkMovementMethod.getInstance());
4393            }
4394        }
4395
4396        mBufferType = type;
4397        mText = text;
4398
4399        if (mTransformation == null) {
4400            mTransformed = text;
4401        } else {
4402            mTransformed = mTransformation.getTransformation(text, this);
4403        }
4404
4405        final int textLength = text.length();
4406
4407        if (text instanceof Spannable && !mAllowTransformationLengthChange) {
4408            Spannable sp = (Spannable) text;
4409
4410            // Remove any ChangeWatchers that might have come from other TextViews.
4411            final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class);
4412            final int count = watchers.length;
4413            for (int i = 0; i < count; i++) {
4414                sp.removeSpan(watchers[i]);
4415            }
4416
4417            if (mChangeWatcher == null) mChangeWatcher = new ChangeWatcher();
4418
4419            sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE |
4420                       (CHANGE_WATCHER_PRIORITY << Spanned.SPAN_PRIORITY_SHIFT));
4421
4422            if (mEditor != null) mEditor.addSpanWatchers(sp);
4423
4424            if (mTransformation != null) {
4425                sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
4426            }
4427
4428            if (mMovement != null) {
4429                mMovement.initialize(this, (Spannable) text);
4430
4431                /*
4432                 * Initializing the movement method will have set the
4433                 * selection, so reset mSelectionMoved to keep that from
4434                 * interfering with the normal on-focus selection-setting.
4435                 */
4436                if (mEditor != null) mEditor.mSelectionMoved = false;
4437            }
4438        }
4439
4440        if (mLayout != null) {
4441            checkForRelayout();
4442        }
4443
4444        sendOnTextChanged(text, 0, oldlen, textLength);
4445        onTextChanged(text, 0, oldlen, textLength);
4446
4447        notifyViewAccessibilityStateChangedIfNeeded(AccessibilityEvent.CONTENT_CHANGE_TYPE_TEXT);
4448
4449        if (needEditableForNotification) {
4450            sendAfterTextChanged((Editable) text);
4451        }
4452
4453        // SelectionModifierCursorController depends on textCanBeSelected, which depends on text
4454        if (mEditor != null) mEditor.prepareCursorControllers();
4455    }
4456
4457    /**
4458     * Sets the TextView to display the specified slice of the specified
4459     * char array.  You must promise that you will not change the contents
4460     * of the array except for right before another call to setText(),
4461     * since the TextView has no way to know that the text
4462     * has changed and that it needs to invalidate and re-layout.
4463     */
4464    public final void setText(char[] text, int start, int len) {
4465        int oldlen = 0;
4466
4467        if (start < 0 || len < 0 || start + len > text.length) {
4468            throw new IndexOutOfBoundsException(start + ", " + len);
4469        }
4470
4471        /*
4472         * We must do the before-notification here ourselves because if
4473         * the old text is a CharWrapper we destroy it before calling
4474         * into the normal path.
4475         */
4476        if (mText != null) {
4477            oldlen = mText.length();
4478            sendBeforeTextChanged(mText, 0, oldlen, len);
4479        } else {
4480            sendBeforeTextChanged("", 0, 0, len);
4481        }
4482
4483        if (mCharWrapper == null) {
4484            mCharWrapper = new CharWrapper(text, start, len);
4485        } else {
4486            mCharWrapper.set(text, start, len);
4487        }
4488
4489        setText(mCharWrapper, mBufferType, false, oldlen);
4490    }
4491
4492    /**
4493     * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)},
4494     * except that the cursor position (if any) is retained in the new text.
4495     *
4496     * @see #setText(CharSequence, android.widget.TextView.BufferType)
4497     */
4498    public final void setTextKeepState(CharSequence text, BufferType type) {
4499        int start = getSelectionStart();
4500        int end = getSelectionEnd();
4501        int len = text.length();
4502
4503        setText(text, type);
4504
4505        if (start >= 0 || end >= 0) {
4506            if (mText instanceof Spannable) {
4507                Selection.setSelection((Spannable) mText,
4508                                       Math.max(0, Math.min(start, len)),
4509                                       Math.max(0, Math.min(end, len)));
4510            }
4511        }
4512    }
4513
4514    @android.view.RemotableViewMethod
4515    public final void setText(@StringRes int resid) {
4516        setText(getContext().getResources().getText(resid));
4517    }
4518
4519    public final void setText(@StringRes int resid, BufferType type) {
4520        setText(getContext().getResources().getText(resid), type);
4521    }
4522
4523    /**
4524     * Sets the text to be displayed when the text of the TextView is empty.
4525     * Null means to use the normal empty text. The hint does not currently
4526     * participate in determining the size of the view.
4527     *
4528     * @attr ref android.R.styleable#TextView_hint
4529     */
4530    @android.view.RemotableViewMethod
4531    public final void setHint(CharSequence hint) {
4532        mHint = TextUtils.stringOrSpannedString(hint);
4533
4534        if (mLayout != null) {
4535            checkForRelayout();
4536        }
4537
4538        if (mText.length() == 0) {
4539            invalidate();
4540        }
4541
4542        // Invalidate display list if hint is currently used
4543        if (mEditor != null && mText.length() == 0 && mHint != null) {
4544            mEditor.invalidateTextDisplayList();
4545        }
4546    }
4547
4548    /**
4549     * Sets the text to be displayed when the text of the TextView is empty,
4550     * from a resource.
4551     *
4552     * @attr ref android.R.styleable#TextView_hint
4553     */
4554    @android.view.RemotableViewMethod
4555    public final void setHint(@StringRes int resid) {
4556        setHint(getContext().getResources().getText(resid));
4557    }
4558
4559    /**
4560     * Returns the hint that is displayed when the text of the TextView
4561     * is empty.
4562     *
4563     * @attr ref android.R.styleable#TextView_hint
4564     */
4565    @ViewDebug.CapturedViewProperty
4566    public CharSequence getHint() {
4567        return mHint;
4568    }
4569
4570    boolean isSingleLine() {
4571        return mSingleLine;
4572    }
4573
4574    private static boolean isMultilineInputType(int type) {
4575        return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) ==
4576            (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE);
4577    }
4578
4579    /**
4580     * Removes the suggestion spans.
4581     */
4582    CharSequence removeSuggestionSpans(CharSequence text) {
4583       if (text instanceof Spanned) {
4584           Spannable spannable;
4585           if (text instanceof Spannable) {
4586               spannable = (Spannable) text;
4587           } else {
4588               spannable = new SpannableString(text);
4589               text = spannable;
4590           }
4591
4592           SuggestionSpan[] spans = spannable.getSpans(0, text.length(), SuggestionSpan.class);
4593           for (int i = 0; i < spans.length; i++) {
4594               spannable.removeSpan(spans[i]);
4595           }
4596       }
4597       return text;
4598    }
4599
4600    /**
4601     * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This
4602     * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)},
4603     * to match the given content type.  If the given content type is {@link EditorInfo#TYPE_NULL}
4604     * then a soft keyboard will not be displayed for this text view.
4605     *
4606     * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be
4607     * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input
4608     * type.
4609     *
4610     * @see #getInputType()
4611     * @see #setRawInputType(int)
4612     * @see android.text.InputType
4613     * @attr ref android.R.styleable#TextView_inputType
4614     */
4615    public void setInputType(int type) {
4616        final boolean wasPassword = isPasswordInputType(getInputType());
4617        final boolean wasVisiblePassword = isVisiblePasswordInputType(getInputType());
4618        setInputType(type, false);
4619        final boolean isPassword = isPasswordInputType(type);
4620        final boolean isVisiblePassword = isVisiblePasswordInputType(type);
4621        boolean forceUpdate = false;
4622        if (isPassword) {
4623            setTransformationMethod(PasswordTransformationMethod.getInstance());
4624            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4625        } else if (isVisiblePassword) {
4626            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4627                forceUpdate = true;
4628            }
4629            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
4630        } else if (wasPassword || wasVisiblePassword) {
4631            // not in password mode, clean up typeface and transformation
4632            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
4633            if (mTransformation == PasswordTransformationMethod.getInstance()) {
4634                forceUpdate = true;
4635            }
4636        }
4637
4638        boolean singleLine = !isMultilineInputType(type);
4639
4640        // We need to update the single line mode if it has changed or we
4641        // were previously in password mode.
4642        if (mSingleLine != singleLine || forceUpdate) {
4643            // Change single line mode, but only change the transformation if
4644            // we are not in password mode.
4645            applySingleLine(singleLine, !isPassword, true);
4646        }
4647
4648        if (!isSuggestionsEnabled()) {
4649            mText = removeSuggestionSpans(mText);
4650        }
4651
4652        InputMethodManager imm = InputMethodManager.peekInstance();
4653        if (imm != null) imm.restartInput(this);
4654    }
4655
4656    /**
4657     * It would be better to rely on the input type for everything. A password inputType should have
4658     * a password transformation. We should hence use isPasswordInputType instead of this method.
4659     *
4660     * We should:
4661     * - Call setInputType in setKeyListener instead of changing the input type directly (which
4662     * would install the correct transformation).
4663     * - Refuse the installation of a non-password transformation in setTransformation if the input
4664     * type is password.
4665     *
4666     * However, this is like this for legacy reasons and we cannot break existing apps. This method
4667     * is useful since it matches what the user can see (obfuscated text or not).
4668     *
4669     * @return true if the current transformation method is of the password type.
4670     */
4671    boolean hasPasswordTransformationMethod() {
4672        return mTransformation instanceof PasswordTransformationMethod;
4673    }
4674
4675    private static boolean isPasswordInputType(int inputType) {
4676        final int variation =
4677                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4678        return variation
4679                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)
4680                || variation
4681                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD)
4682                || variation
4683                == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD);
4684    }
4685
4686    private static boolean isVisiblePasswordInputType(int inputType) {
4687        final int variation =
4688                inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION);
4689        return variation
4690                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
4691    }
4692
4693    /**
4694     * Directly change the content type integer of the text view, without
4695     * modifying any other state.
4696     * @see #setInputType(int)
4697     * @see android.text.InputType
4698     * @attr ref android.R.styleable#TextView_inputType
4699     */
4700    public void setRawInputType(int type) {
4701        if (type == InputType.TYPE_NULL && mEditor == null) return; //TYPE_NULL is the default value
4702        createEditorIfNeeded();
4703        mEditor.mInputType = type;
4704    }
4705
4706    private void setInputType(int type, boolean direct) {
4707        final int cls = type & EditorInfo.TYPE_MASK_CLASS;
4708        KeyListener input;
4709        if (cls == EditorInfo.TYPE_CLASS_TEXT) {
4710            boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0;
4711            TextKeyListener.Capitalize cap;
4712            if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
4713                cap = TextKeyListener.Capitalize.CHARACTERS;
4714            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) {
4715                cap = TextKeyListener.Capitalize.WORDS;
4716            } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) {
4717                cap = TextKeyListener.Capitalize.SENTENCES;
4718            } else {
4719                cap = TextKeyListener.Capitalize.NONE;
4720            }
4721            input = TextKeyListener.getInstance(autotext, cap);
4722        } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) {
4723            input = DigitsKeyListener.getInstance(
4724                    (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0,
4725                    (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0);
4726        } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) {
4727            switch (type & EditorInfo.TYPE_MASK_VARIATION) {
4728                case EditorInfo.TYPE_DATETIME_VARIATION_DATE:
4729                    input = DateKeyListener.getInstance();
4730                    break;
4731                case EditorInfo.TYPE_DATETIME_VARIATION_TIME:
4732                    input = TimeKeyListener.getInstance();
4733                    break;
4734                default:
4735                    input = DateTimeKeyListener.getInstance();
4736                    break;
4737            }
4738        } else if (cls == EditorInfo.TYPE_CLASS_PHONE) {
4739            input = DialerKeyListener.getInstance();
4740        } else {
4741            input = TextKeyListener.getInstance();
4742        }
4743        setRawInputType(type);
4744        if (direct) {
4745            createEditorIfNeeded();
4746            mEditor.mKeyListener = input;
4747        } else {
4748            setKeyListenerOnly(input);
4749        }
4750    }
4751
4752    /**
4753     * Get the type of the editable content.
4754     *
4755     * @see #setInputType(int)
4756     * @see android.text.InputType
4757     */
4758    public int getInputType() {
4759        return mEditor == null ? EditorInfo.TYPE_NULL : mEditor.mInputType;
4760    }
4761
4762    /**
4763     * Change the editor type integer associated with the text view, which
4764     * will be reported to an IME with {@link EditorInfo#imeOptions} when it
4765     * has focus.
4766     * @see #getImeOptions
4767     * @see android.view.inputmethod.EditorInfo
4768     * @attr ref android.R.styleable#TextView_imeOptions
4769     */
4770    public void setImeOptions(int imeOptions) {
4771        createEditorIfNeeded();
4772        mEditor.createInputContentTypeIfNeeded();
4773        mEditor.mInputContentType.imeOptions = imeOptions;
4774    }
4775
4776    /**
4777     * Get the type of the IME editor.
4778     *
4779     * @see #setImeOptions(int)
4780     * @see android.view.inputmethod.EditorInfo
4781     */
4782    public int getImeOptions() {
4783        return mEditor != null && mEditor.mInputContentType != null
4784                ? mEditor.mInputContentType.imeOptions : EditorInfo.IME_NULL;
4785    }
4786
4787    /**
4788     * Change the custom IME action associated with the text view, which
4789     * will be reported to an IME with {@link EditorInfo#actionLabel}
4790     * and {@link EditorInfo#actionId} when it has focus.
4791     * @see #getImeActionLabel
4792     * @see #getImeActionId
4793     * @see android.view.inputmethod.EditorInfo
4794     * @attr ref android.R.styleable#TextView_imeActionLabel
4795     * @attr ref android.R.styleable#TextView_imeActionId
4796     */
4797    public void setImeActionLabel(CharSequence label, int actionId) {
4798        createEditorIfNeeded();
4799        mEditor.createInputContentTypeIfNeeded();
4800        mEditor.mInputContentType.imeActionLabel = label;
4801        mEditor.mInputContentType.imeActionId = actionId;
4802    }
4803
4804    /**
4805     * Get the IME action label previous set with {@link #setImeActionLabel}.
4806     *
4807     * @see #setImeActionLabel
4808     * @see android.view.inputmethod.EditorInfo
4809     */
4810    public CharSequence getImeActionLabel() {
4811        return mEditor != null && mEditor.mInputContentType != null
4812                ? mEditor.mInputContentType.imeActionLabel : null;
4813    }
4814
4815    /**
4816     * Get the IME action ID previous set with {@link #setImeActionLabel}.
4817     *
4818     * @see #setImeActionLabel
4819     * @see android.view.inputmethod.EditorInfo
4820     */
4821    public int getImeActionId() {
4822        return mEditor != null && mEditor.mInputContentType != null
4823                ? mEditor.mInputContentType.imeActionId : 0;
4824    }
4825
4826    /**
4827     * Set a special listener to be called when an action is performed
4828     * on the text view.  This will be called when the enter key is pressed,
4829     * or when an action supplied to the IME is selected by the user.  Setting
4830     * this means that the normal hard key event will not insert a newline
4831     * into the text view, even if it is multi-line; holding down the ALT
4832     * modifier will, however, allow the user to insert a newline character.
4833     */
4834    public void setOnEditorActionListener(OnEditorActionListener l) {
4835        createEditorIfNeeded();
4836        mEditor.createInputContentTypeIfNeeded();
4837        mEditor.mInputContentType.onEditorActionListener = l;
4838    }
4839
4840    /**
4841     * Called when an attached input method calls
4842     * {@link InputConnection#performEditorAction(int)
4843     * InputConnection.performEditorAction()}
4844     * for this text view.  The default implementation will call your action
4845     * listener supplied to {@link #setOnEditorActionListener}, or perform
4846     * a standard operation for {@link EditorInfo#IME_ACTION_NEXT
4847     * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS
4848     * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE
4849     * EditorInfo.IME_ACTION_DONE}.
4850     *
4851     * <p>For backwards compatibility, if no IME options have been set and the
4852     * text view would not normally advance focus on enter, then
4853     * the NEXT and DONE actions received here will be turned into an enter
4854     * key down/up pair to go through the normal key handling.
4855     *
4856     * @param actionCode The code of the action being performed.
4857     *
4858     * @see #setOnEditorActionListener
4859     */
4860    public void onEditorAction(int actionCode) {
4861        final Editor.InputContentType ict = mEditor == null ? null : mEditor.mInputContentType;
4862        if (ict != null) {
4863            if (ict.onEditorActionListener != null) {
4864                if (ict.onEditorActionListener.onEditorAction(this,
4865                        actionCode, null)) {
4866                    return;
4867                }
4868            }
4869
4870            // This is the handling for some default action.
4871            // Note that for backwards compatibility we don't do this
4872            // default handling if explicit ime options have not been given,
4873            // instead turning this into the normal enter key codes that an
4874            // app may be expecting.
4875            if (actionCode == EditorInfo.IME_ACTION_NEXT) {
4876                View v = focusSearch(FOCUS_FORWARD);
4877                if (v != null) {
4878                    if (!v.requestFocus(FOCUS_FORWARD)) {
4879                        throw new IllegalStateException("focus search returned a view " +
4880                                "that wasn't able to take focus!");
4881                    }
4882                }
4883                return;
4884
4885            } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) {
4886                View v = focusSearch(FOCUS_BACKWARD);
4887                if (v != null) {
4888                    if (!v.requestFocus(FOCUS_BACKWARD)) {
4889                        throw new IllegalStateException("focus search returned a view " +
4890                                "that wasn't able to take focus!");
4891                    }
4892                }
4893                return;
4894
4895            } else if (actionCode == EditorInfo.IME_ACTION_DONE) {
4896                InputMethodManager imm = InputMethodManager.peekInstance();
4897                if (imm != null && imm.isActive(this)) {
4898                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
4899                }
4900                return;
4901            }
4902        }
4903
4904        ViewRootImpl viewRootImpl = getViewRootImpl();
4905        if (viewRootImpl != null) {
4906            long eventTime = SystemClock.uptimeMillis();
4907            viewRootImpl.dispatchKeyFromIme(
4908                    new KeyEvent(eventTime, eventTime,
4909                    KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0,
4910                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4911                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4912                    | KeyEvent.FLAG_EDITOR_ACTION));
4913            viewRootImpl.dispatchKeyFromIme(
4914                    new KeyEvent(SystemClock.uptimeMillis(), eventTime,
4915                    KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0,
4916                    KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
4917                    KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE
4918                    | KeyEvent.FLAG_EDITOR_ACTION));
4919        }
4920    }
4921
4922    /**
4923     * Set the private content type of the text, which is the
4924     * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions}
4925     * field that will be filled in when creating an input connection.
4926     *
4927     * @see #getPrivateImeOptions()
4928     * @see EditorInfo#privateImeOptions
4929     * @attr ref android.R.styleable#TextView_privateImeOptions
4930     */
4931    public void setPrivateImeOptions(String type) {
4932        createEditorIfNeeded();
4933        mEditor.createInputContentTypeIfNeeded();
4934        mEditor.mInputContentType.privateImeOptions = type;
4935    }
4936
4937    /**
4938     * Get the private type of the content.
4939     *
4940     * @see #setPrivateImeOptions(String)
4941     * @see EditorInfo#privateImeOptions
4942     */
4943    public String getPrivateImeOptions() {
4944        return mEditor != null && mEditor.mInputContentType != null
4945                ? mEditor.mInputContentType.privateImeOptions : null;
4946    }
4947
4948    /**
4949     * Set the extra input data of the text, which is the
4950     * {@link EditorInfo#extras TextBoxAttribute.extras}
4951     * Bundle that will be filled in when creating an input connection.  The
4952     * given integer is the resource ID of an XML resource holding an
4953     * {@link android.R.styleable#InputExtras &lt;input-extras&gt;} XML tree.
4954     *
4955     * @see #getInputExtras(boolean)
4956     * @see EditorInfo#extras
4957     * @attr ref android.R.styleable#TextView_editorExtras
4958     */
4959    public void setInputExtras(@XmlRes int xmlResId) throws XmlPullParserException, IOException {
4960        createEditorIfNeeded();
4961        XmlResourceParser parser = getResources().getXml(xmlResId);
4962        mEditor.createInputContentTypeIfNeeded();
4963        mEditor.mInputContentType.extras = new Bundle();
4964        getResources().parseBundleExtras(parser, mEditor.mInputContentType.extras);
4965    }
4966
4967    /**
4968     * Retrieve the input extras currently associated with the text view, which
4969     * can be viewed as well as modified.
4970     *
4971     * @param create If true, the extras will be created if they don't already
4972     * exist.  Otherwise, null will be returned if none have been created.
4973     * @see #setInputExtras(int)
4974     * @see EditorInfo#extras
4975     * @attr ref android.R.styleable#TextView_editorExtras
4976     */
4977    public Bundle getInputExtras(boolean create) {
4978        if (mEditor == null && !create) return null;
4979        createEditorIfNeeded();
4980        if (mEditor.mInputContentType == null) {
4981            if (!create) return null;
4982            mEditor.createInputContentTypeIfNeeded();
4983        }
4984        if (mEditor.mInputContentType.extras == null) {
4985            if (!create) return null;
4986            mEditor.mInputContentType.extras = new Bundle();
4987        }
4988        return mEditor.mInputContentType.extras;
4989    }
4990
4991    /**
4992     * Returns the error message that was set to be displayed with
4993     * {@link #setError}, or <code>null</code> if no error was set
4994     * or if it the error was cleared by the widget after user input.
4995     */
4996    public CharSequence getError() {
4997        return mEditor == null ? null : mEditor.mError;
4998    }
4999
5000    /**
5001     * Sets the right-hand compound drawable of the TextView to the "error"
5002     * icon and sets an error message that will be displayed in a popup when
5003     * the TextView has focus.  The icon and error message will be reset to
5004     * null when any key events cause changes to the TextView's text.  If the
5005     * <code>error</code> is <code>null</code>, the error message and icon
5006     * will be cleared.
5007     */
5008    @android.view.RemotableViewMethod
5009    public void setError(CharSequence error) {
5010        if (error == null) {
5011            setError(null, null);
5012        } else {
5013            Drawable dr = getContext().getDrawable(
5014                    com.android.internal.R.drawable.indicator_input_error);
5015
5016            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());
5017            setError(error, dr);
5018        }
5019    }
5020
5021    /**
5022     * Sets the right-hand compound drawable of the TextView to the specified
5023     * icon and sets an error message that will be displayed in a popup when
5024     * the TextView has focus.  The icon and error message will be reset to
5025     * null when any key events cause changes to the TextView's text.  The
5026     * drawable must already have had {@link Drawable#setBounds} set on it.
5027     * If the <code>error</code> is <code>null</code>, the error message will
5028     * be cleared (and you should provide a <code>null</code> icon as well).
5029     */
5030    public void setError(CharSequence error, Drawable icon) {
5031        createEditorIfNeeded();
5032        mEditor.setError(error, icon);
5033        notifyViewAccessibilityStateChangedIfNeeded(
5034                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
5035    }
5036
5037    @Override
5038    protected boolean setFrame(int l, int t, int r, int b) {
5039        boolean result = super.setFrame(l, t, r, b);
5040
5041        if (mEditor != null) mEditor.setFrame();
5042
5043        restartMarqueeIfNeeded();
5044
5045        return result;
5046    }
5047
5048    private void restartMarqueeIfNeeded() {
5049        if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
5050            mRestartMarquee = false;
5051            startMarquee();
5052        }
5053    }
5054
5055    /**
5056     * Sets the list of input filters that will be used if the buffer is
5057     * Editable. Has no effect otherwise.
5058     *
5059     * @attr ref android.R.styleable#TextView_maxLength
5060     */
5061    public void setFilters(InputFilter[] filters) {
5062        if (filters == null) {
5063            throw new IllegalArgumentException();
5064        }
5065
5066        mFilters = filters;
5067
5068        if (mText instanceof Editable) {
5069            setFilters((Editable) mText, filters);
5070        }
5071    }
5072
5073    /**
5074     * Sets the list of input filters on the specified Editable,
5075     * and includes mInput in the list if it is an InputFilter.
5076     */
5077    private void setFilters(Editable e, InputFilter[] filters) {
5078        if (mEditor != null) {
5079            final boolean undoFilter = mEditor.mUndoInputFilter != null;
5080            final boolean keyFilter = mEditor.mKeyListener instanceof InputFilter;
5081            int num = 0;
5082            if (undoFilter) num++;
5083            if (keyFilter) num++;
5084            if (num > 0) {
5085                InputFilter[] nf = new InputFilter[filters.length + num];
5086
5087                System.arraycopy(filters, 0, nf, 0, filters.length);
5088                num = 0;
5089                if (undoFilter) {
5090                    nf[filters.length] = mEditor.mUndoInputFilter;
5091                    num++;
5092                }
5093                if (keyFilter) {
5094                    nf[filters.length + num] = (InputFilter) mEditor.mKeyListener;
5095                }
5096
5097                e.setFilters(nf);
5098                return;
5099            }
5100        }
5101        e.setFilters(filters);
5102    }
5103
5104    /**
5105     * Returns the current list of input filters.
5106     *
5107     * @attr ref android.R.styleable#TextView_maxLength
5108     */
5109    public InputFilter[] getFilters() {
5110        return mFilters;
5111    }
5112
5113    /////////////////////////////////////////////////////////////////////////
5114
5115    private int getBoxHeight(Layout l) {
5116        Insets opticalInsets = isLayoutModeOptical(mParent) ? getOpticalInsets() : Insets.NONE;
5117        int padding = (l == mHintLayout) ?
5118                getCompoundPaddingTop() + getCompoundPaddingBottom() :
5119                getExtendedPaddingTop() + getExtendedPaddingBottom();
5120        return getMeasuredHeight() - padding + opticalInsets.top + opticalInsets.bottom;
5121    }
5122
5123    int getVerticalOffset(boolean forceNormal) {
5124        int voffset = 0;
5125        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5126
5127        Layout l = mLayout;
5128        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5129            l = mHintLayout;
5130        }
5131
5132        if (gravity != Gravity.TOP) {
5133            int boxht = getBoxHeight(l);
5134            int textht = l.getHeight();
5135
5136            if (textht < boxht) {
5137                if (gravity == Gravity.BOTTOM)
5138                    voffset = boxht - textht;
5139                else // (gravity == Gravity.CENTER_VERTICAL)
5140                    voffset = (boxht - textht) >> 1;
5141            }
5142        }
5143        return voffset;
5144    }
5145
5146    private int getBottomVerticalOffset(boolean forceNormal) {
5147        int voffset = 0;
5148        final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK;
5149
5150        Layout l = mLayout;
5151        if (!forceNormal && mText.length() == 0 && mHintLayout != null) {
5152            l = mHintLayout;
5153        }
5154
5155        if (gravity != Gravity.BOTTOM) {
5156            int boxht = getBoxHeight(l);
5157            int textht = l.getHeight();
5158
5159            if (textht < boxht) {
5160                if (gravity == Gravity.TOP)
5161                    voffset = boxht - textht;
5162                else // (gravity == Gravity.CENTER_VERTICAL)
5163                    voffset = (boxht - textht) >> 1;
5164            }
5165        }
5166        return voffset;
5167    }
5168
5169    void invalidateCursorPath() {
5170        if (mHighlightPathBogus) {
5171            invalidateCursor();
5172        } else {
5173            final int horizontalPadding = getCompoundPaddingLeft();
5174            final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5175
5176            if (mEditor.mCursorCount == 0) {
5177                synchronized (TEMP_RECTF) {
5178                    /*
5179                     * The reason for this concern about the thickness of the
5180                     * cursor and doing the floor/ceil on the coordinates is that
5181                     * some EditTexts (notably textfields in the Browser) have
5182                     * anti-aliased text where not all the characters are
5183                     * necessarily at integer-multiple locations.  This should
5184                     * make sure the entire cursor gets invalidated instead of
5185                     * sometimes missing half a pixel.
5186                     */
5187                    float thick = (float) Math.ceil(mTextPaint.getStrokeWidth());
5188                    if (thick < 1.0f) {
5189                        thick = 1.0f;
5190                    }
5191
5192                    thick /= 2.0f;
5193
5194                    // mHighlightPath is guaranteed to be non null at that point.
5195                    mHighlightPath.computeBounds(TEMP_RECTF, false);
5196
5197                    invalidate((int) Math.floor(horizontalPadding + TEMP_RECTF.left - thick),
5198                            (int) Math.floor(verticalPadding + TEMP_RECTF.top - thick),
5199                            (int) Math.ceil(horizontalPadding + TEMP_RECTF.right + thick),
5200                            (int) Math.ceil(verticalPadding + TEMP_RECTF.bottom + thick));
5201                }
5202            } else {
5203                for (int i = 0; i < mEditor.mCursorCount; i++) {
5204                    Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5205                    invalidate(bounds.left + horizontalPadding, bounds.top + verticalPadding,
5206                            bounds.right + horizontalPadding, bounds.bottom + verticalPadding);
5207                }
5208            }
5209        }
5210    }
5211
5212    void invalidateCursor() {
5213        int where = getSelectionEnd();
5214
5215        invalidateCursor(where, where, where);
5216    }
5217
5218    private void invalidateCursor(int a, int b, int c) {
5219        if (a >= 0 || b >= 0 || c >= 0) {
5220            int start = Math.min(Math.min(a, b), c);
5221            int end = Math.max(Math.max(a, b), c);
5222            invalidateRegion(start, end, true /* Also invalidates blinking cursor */);
5223        }
5224    }
5225
5226    /**
5227     * Invalidates the region of text enclosed between the start and end text offsets.
5228     */
5229    void invalidateRegion(int start, int end, boolean invalidateCursor) {
5230        if (mLayout == null) {
5231            invalidate();
5232        } else {
5233                int lineStart = mLayout.getLineForOffset(start);
5234                int top = mLayout.getLineTop(lineStart);
5235
5236                // This is ridiculous, but the descent from the line above
5237                // can hang down into the line we really want to redraw,
5238                // so we have to invalidate part of the line above to make
5239                // sure everything that needs to be redrawn really is.
5240                // (But not the whole line above, because that would cause
5241                // the same problem with the descenders on the line above it!)
5242                if (lineStart > 0) {
5243                    top -= mLayout.getLineDescent(lineStart - 1);
5244                }
5245
5246                int lineEnd;
5247
5248                if (start == end)
5249                    lineEnd = lineStart;
5250                else
5251                    lineEnd = mLayout.getLineForOffset(end);
5252
5253                int bottom = mLayout.getLineBottom(lineEnd);
5254
5255                // mEditor can be null in case selection is set programmatically.
5256                if (invalidateCursor && mEditor != null) {
5257                    for (int i = 0; i < mEditor.mCursorCount; i++) {
5258                        Rect bounds = mEditor.mCursorDrawable[i].getBounds();
5259                        top = Math.min(top, bounds.top);
5260                        bottom = Math.max(bottom, bounds.bottom);
5261                    }
5262                }
5263
5264                final int compoundPaddingLeft = getCompoundPaddingLeft();
5265                final int verticalPadding = getExtendedPaddingTop() + getVerticalOffset(true);
5266
5267                int left, right;
5268                if (lineStart == lineEnd && !invalidateCursor) {
5269                    left = (int) mLayout.getPrimaryHorizontal(start);
5270                    right = (int) (mLayout.getPrimaryHorizontal(end) + 1.0);
5271                    left += compoundPaddingLeft;
5272                    right += compoundPaddingLeft;
5273                } else {
5274                    // Rectangle bounding box when the region spans several lines
5275                    left = compoundPaddingLeft;
5276                    right = getWidth() - getCompoundPaddingRight();
5277                }
5278
5279                invalidate(mScrollX + left, verticalPadding + top,
5280                        mScrollX + right, verticalPadding + bottom);
5281        }
5282    }
5283
5284    private void registerForPreDraw() {
5285        if (!mPreDrawRegistered) {
5286            getViewTreeObserver().addOnPreDrawListener(this);
5287            mPreDrawRegistered = true;
5288        }
5289    }
5290
5291    private void unregisterForPreDraw() {
5292        getViewTreeObserver().removeOnPreDrawListener(this);
5293        mPreDrawRegistered = false;
5294        mPreDrawListenerDetached = false;
5295    }
5296
5297    /**
5298     * {@inheritDoc}
5299     */
5300    public boolean onPreDraw() {
5301        if (mLayout == null) {
5302            assumeLayout();
5303        }
5304
5305        if (mMovement != null) {
5306            /* This code also provides auto-scrolling when a cursor is moved using a
5307             * CursorController (insertion point or selection limits).
5308             * For selection, ensure start or end is visible depending on controller's state.
5309             */
5310            int curs = getSelectionEnd();
5311            // Do not create the controller if it is not already created.
5312            if (mEditor != null && mEditor.mSelectionModifierCursorController != null &&
5313                    mEditor.mSelectionModifierCursorController.isSelectionStartDragged()) {
5314                curs = getSelectionStart();
5315            }
5316
5317            /*
5318             * TODO: This should really only keep the end in view if
5319             * it already was before the text changed.  I'm not sure
5320             * of a good way to tell from here if it was.
5321             */
5322            if (curs < 0 && (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
5323                curs = mText.length();
5324            }
5325
5326            if (curs >= 0) {
5327                bringPointIntoView(curs);
5328            }
5329        } else {
5330            bringTextIntoView();
5331        }
5332
5333        // This has to be checked here since:
5334        // - onFocusChanged cannot start it when focus is given to a view with selected text (after
5335        //   a screen rotation) since layout is not yet initialized at that point.
5336        if (mEditor != null && mEditor.mCreatedWithASelection) {
5337            if (mEditor.extractedTextModeWillBeStarted()) {
5338                mEditor.checkFieldAndSelectCurrentWord();
5339            } else {
5340                mEditor.startSelectionActionMode();
5341            }
5342            mEditor.mCreatedWithASelection = false;
5343        }
5344
5345        unregisterForPreDraw();
5346
5347        return true;
5348    }
5349
5350    @Override
5351    protected void onAttachedToWindow() {
5352        super.onAttachedToWindow();
5353
5354        mTemporaryDetach = false;
5355
5356        if (mEditor != null) mEditor.onAttachedToWindow();
5357
5358        if (mPreDrawListenerDetached) {
5359            getViewTreeObserver().addOnPreDrawListener(this);
5360            mPreDrawListenerDetached = false;
5361        }
5362    }
5363
5364    /** @hide */
5365    @Override
5366    protected void onDetachedFromWindowInternal() {
5367        if (mPreDrawRegistered) {
5368            getViewTreeObserver().removeOnPreDrawListener(this);
5369            mPreDrawListenerDetached = true;
5370        }
5371
5372        resetResolvedDrawables();
5373
5374        if (mEditor != null) mEditor.onDetachedFromWindow();
5375
5376        super.onDetachedFromWindowInternal();
5377    }
5378
5379    @Override
5380    public void onScreenStateChanged(int screenState) {
5381        super.onScreenStateChanged(screenState);
5382        if (mEditor != null) mEditor.onScreenStateChanged(screenState);
5383    }
5384
5385    @Override
5386    protected boolean isPaddingOffsetRequired() {
5387        return mShadowRadius != 0 || mDrawables != null;
5388    }
5389
5390    @Override
5391    protected int getLeftPaddingOffset() {
5392        return getCompoundPaddingLeft() - mPaddingLeft +
5393                (int) Math.min(0, mShadowDx - mShadowRadius);
5394    }
5395
5396    @Override
5397    protected int getTopPaddingOffset() {
5398        return (int) Math.min(0, mShadowDy - mShadowRadius);
5399    }
5400
5401    @Override
5402    protected int getBottomPaddingOffset() {
5403        return (int) Math.max(0, mShadowDy + mShadowRadius);
5404    }
5405
5406    private int getFudgedPaddingRight() {
5407        // Add sufficient space for cursor and tone marks
5408        int cursorWidth = 2 + (int)mTextPaint.density; // adequate for Material cursors
5409        return Math.max(0, getCompoundPaddingRight() - (cursorWidth - 1));
5410    }
5411
5412    @Override
5413    protected int getRightPaddingOffset() {
5414        return -(getFudgedPaddingRight() - mPaddingRight) +
5415                (int) Math.max(0, mShadowDx + mShadowRadius);
5416    }
5417
5418    @Override
5419    protected boolean verifyDrawable(Drawable who) {
5420        final boolean verified = super.verifyDrawable(who);
5421        if (!verified && mDrawables != null) {
5422            for (Drawable dr : mDrawables.mShowing) {
5423                if (who == dr) {
5424                    return true;
5425                }
5426            }
5427        }
5428        return verified;
5429    }
5430
5431    @Override
5432    public void jumpDrawablesToCurrentState() {
5433        super.jumpDrawablesToCurrentState();
5434        if (mDrawables != null) {
5435            for (Drawable dr : mDrawables.mShowing) {
5436                if (dr != null) {
5437                    dr.jumpToCurrentState();
5438                }
5439            }
5440        }
5441    }
5442
5443    @Override
5444    public void invalidateDrawable(Drawable drawable) {
5445        boolean handled = false;
5446
5447        if (verifyDrawable(drawable)) {
5448            final Rect dirty = drawable.getBounds();
5449            int scrollX = mScrollX;
5450            int scrollY = mScrollY;
5451
5452            // IMPORTANT: The coordinates below are based on the coordinates computed
5453            // for each compound drawable in onDraw(). Make sure to update each section
5454            // accordingly.
5455            final TextView.Drawables drawables = mDrawables;
5456            if (drawables != null) {
5457                if (drawable == drawables.mShowing[Drawables.LEFT]) {
5458                    final int compoundPaddingTop = getCompoundPaddingTop();
5459                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5460                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5461
5462                    scrollX += mPaddingLeft;
5463                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2;
5464                    handled = true;
5465                } else if (drawable == drawables.mShowing[Drawables.RIGHT]) {
5466                    final int compoundPaddingTop = getCompoundPaddingTop();
5467                    final int compoundPaddingBottom = getCompoundPaddingBottom();
5468                    final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5469
5470                    scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight);
5471                    scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2;
5472                    handled = true;
5473                } else if (drawable == drawables.mShowing[Drawables.TOP]) {
5474                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5475                    final int compoundPaddingRight = getCompoundPaddingRight();
5476                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5477
5478                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2;
5479                    scrollY += mPaddingTop;
5480                    handled = true;
5481                } else if (drawable == drawables.mShowing[Drawables.BOTTOM]) {
5482                    final int compoundPaddingLeft = getCompoundPaddingLeft();
5483                    final int compoundPaddingRight = getCompoundPaddingRight();
5484                    final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft;
5485
5486                    scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2;
5487                    scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom);
5488                    handled = true;
5489                }
5490            }
5491
5492            if (handled) {
5493                invalidate(dirty.left + scrollX, dirty.top + scrollY,
5494                        dirty.right + scrollX, dirty.bottom + scrollY);
5495            }
5496        }
5497
5498        if (!handled) {
5499            super.invalidateDrawable(drawable);
5500        }
5501    }
5502
5503    @Override
5504    public boolean hasOverlappingRendering() {
5505        // horizontal fading edge causes SaveLayerAlpha, which doesn't support alpha modulation
5506        return ((getBackground() != null && getBackground().getCurrent() != null)
5507                || mText instanceof Spannable || hasSelection()
5508                || isHorizontalFadingEdgeEnabled());
5509    }
5510
5511    /**
5512     *
5513     * Returns the state of the {@code textIsSelectable} flag (See
5514     * {@link #setTextIsSelectable setTextIsSelectable()}). Although you have to set this flag
5515     * to allow users to select and copy text in a non-editable TextView, the content of an
5516     * {@link EditText} can always be selected, independently of the value of this flag.
5517     * <p>
5518     *
5519     * @return True if the text displayed in this TextView can be selected by the user.
5520     *
5521     * @attr ref android.R.styleable#TextView_textIsSelectable
5522     */
5523    public boolean isTextSelectable() {
5524        return mEditor == null ? false : mEditor.mTextIsSelectable;
5525    }
5526
5527    /**
5528     * Sets whether the content of this view is selectable by the user. The default is
5529     * {@code false}, meaning that the content is not selectable.
5530     * <p>
5531     * When you use a TextView to display a useful piece of information to the user (such as a
5532     * contact's address), make it selectable, so that the user can select and copy its
5533     * content. You can also use set the XML attribute
5534     * {@link android.R.styleable#TextView_textIsSelectable} to "true".
5535     * <p>
5536     * When you call this method to set the value of {@code textIsSelectable}, it sets
5537     * the flags {@code focusable}, {@code focusableInTouchMode}, {@code clickable},
5538     * and {@code longClickable} to the same value. These flags correspond to the attributes
5539     * {@link android.R.styleable#View_focusable android:focusable},
5540     * {@link android.R.styleable#View_focusableInTouchMode android:focusableInTouchMode},
5541     * {@link android.R.styleable#View_clickable android:clickable}, and
5542     * {@link android.R.styleable#View_longClickable android:longClickable}. To restore any of these
5543     * flags to a state you had set previously, call one or more of the following methods:
5544     * {@link #setFocusable(boolean) setFocusable()},
5545     * {@link #setFocusableInTouchMode(boolean) setFocusableInTouchMode()},
5546     * {@link #setClickable(boolean) setClickable()} or
5547     * {@link #setLongClickable(boolean) setLongClickable()}.
5548     *
5549     * @param selectable Whether the content of this TextView should be selectable.
5550     */
5551    public void setTextIsSelectable(boolean selectable) {
5552        if (!selectable && mEditor == null) return; // false is default value with no edit data
5553
5554        createEditorIfNeeded();
5555        if (mEditor.mTextIsSelectable == selectable) return;
5556
5557        mEditor.mTextIsSelectable = selectable;
5558        setFocusableInTouchMode(selectable);
5559        setFocusable(selectable);
5560        setClickable(selectable);
5561        setLongClickable(selectable);
5562
5563        // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null
5564
5565        setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
5566        setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);
5567
5568        // Called by setText above, but safer in case of future code changes
5569        mEditor.prepareCursorControllers();
5570    }
5571
5572    @Override
5573    protected int[] onCreateDrawableState(int extraSpace) {
5574        final int[] drawableState;
5575
5576        if (mSingleLine) {
5577            drawableState = super.onCreateDrawableState(extraSpace);
5578        } else {
5579            drawableState = super.onCreateDrawableState(extraSpace + 1);
5580            mergeDrawableStates(drawableState, MULTILINE_STATE_SET);
5581        }
5582
5583        if (isTextSelectable()) {
5584            // Disable pressed state, which was introduced when TextView was made clickable.
5585            // Prevents text color change.
5586            // setClickable(false) would have a similar effect, but it also disables focus changes
5587            // and long press actions, which are both needed by text selection.
5588            final int length = drawableState.length;
5589            for (int i = 0; i < length; i++) {
5590                if (drawableState[i] == R.attr.state_pressed) {
5591                    final int[] nonPressedState = new int[length - 1];
5592                    System.arraycopy(drawableState, 0, nonPressedState, 0, i);
5593                    System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1);
5594                    return nonPressedState;
5595                }
5596            }
5597        }
5598
5599        return drawableState;
5600    }
5601
5602    private Path getUpdatedHighlightPath() {
5603        Path highlight = null;
5604        Paint highlightPaint = mHighlightPaint;
5605
5606        final int selStart = getSelectionStart();
5607        final int selEnd = getSelectionEnd();
5608        if (mMovement != null && (isFocused() || isPressed()) && selStart >= 0) {
5609            if (selStart == selEnd) {
5610                if (mEditor != null && mEditor.isCursorVisible() &&
5611                        (SystemClock.uptimeMillis() - mEditor.mShowCursor) %
5612                        (2 * Editor.BLINK) < Editor.BLINK) {
5613                    if (mHighlightPathBogus) {
5614                        if (mHighlightPath == null) mHighlightPath = new Path();
5615                        mHighlightPath.reset();
5616                        mLayout.getCursorPath(selStart, mHighlightPath, mText);
5617                        mEditor.updateCursorsPositions();
5618                        mHighlightPathBogus = false;
5619                    }
5620
5621                    // XXX should pass to skin instead of drawing directly
5622                    highlightPaint.setColor(mCurTextColor);
5623                    highlightPaint.setStyle(Paint.Style.STROKE);
5624                    highlight = mHighlightPath;
5625                }
5626            } else {
5627                if (mHighlightPathBogus) {
5628                    if (mHighlightPath == null) mHighlightPath = new Path();
5629                    mHighlightPath.reset();
5630                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5631                    mHighlightPathBogus = false;
5632                }
5633
5634                // XXX should pass to skin instead of drawing directly
5635                highlightPaint.setColor(mHighlightColor);
5636                highlightPaint.setStyle(Paint.Style.FILL);
5637
5638                highlight = mHighlightPath;
5639            }
5640        }
5641        return highlight;
5642    }
5643
5644    /**
5645     * @hide
5646     */
5647    public int getHorizontalOffsetForDrawables() {
5648        return 0;
5649    }
5650
5651    @Override
5652    protected void onDraw(Canvas canvas) {
5653        restartMarqueeIfNeeded();
5654
5655        // Draw the background for this view
5656        super.onDraw(canvas);
5657
5658        final int compoundPaddingLeft = getCompoundPaddingLeft();
5659        final int compoundPaddingTop = getCompoundPaddingTop();
5660        final int compoundPaddingRight = getCompoundPaddingRight();
5661        final int compoundPaddingBottom = getCompoundPaddingBottom();
5662        final int scrollX = mScrollX;
5663        final int scrollY = mScrollY;
5664        final int right = mRight;
5665        final int left = mLeft;
5666        final int bottom = mBottom;
5667        final int top = mTop;
5668        final boolean isLayoutRtl = isLayoutRtl();
5669        final int offset = getHorizontalOffsetForDrawables();
5670        final int leftOffset = isLayoutRtl ? 0 : offset;
5671        final int rightOffset = isLayoutRtl ? offset : 0 ;
5672
5673        final Drawables dr = mDrawables;
5674        if (dr != null) {
5675            /*
5676             * Compound, not extended, because the icon is not clipped
5677             * if the text height is smaller.
5678             */
5679
5680            int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop;
5681            int hspace = right - left - compoundPaddingRight - compoundPaddingLeft;
5682
5683            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5684            // Make sure to update invalidateDrawable() when changing this code.
5685            if (dr.mShowing[Drawables.LEFT] != null) {
5686                canvas.save();
5687                canvas.translate(scrollX + mPaddingLeft + leftOffset,
5688                                 scrollY + compoundPaddingTop +
5689                                 (vspace - dr.mDrawableHeightLeft) / 2);
5690                dr.mShowing[Drawables.LEFT].draw(canvas);
5691                canvas.restore();
5692            }
5693
5694            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5695            // Make sure to update invalidateDrawable() when changing this code.
5696            if (dr.mShowing[Drawables.RIGHT] != null) {
5697                canvas.save();
5698                canvas.translate(scrollX + right - left - mPaddingRight
5699                        - dr.mDrawableSizeRight - rightOffset,
5700                         scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2);
5701                dr.mShowing[Drawables.RIGHT].draw(canvas);
5702                canvas.restore();
5703            }
5704
5705            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5706            // Make sure to update invalidateDrawable() when changing this code.
5707            if (dr.mShowing[Drawables.TOP] != null) {
5708                canvas.save();
5709                canvas.translate(scrollX + compoundPaddingLeft +
5710                        (hspace - dr.mDrawableWidthTop) / 2, scrollY + mPaddingTop);
5711                dr.mShowing[Drawables.TOP].draw(canvas);
5712                canvas.restore();
5713            }
5714
5715            // IMPORTANT: The coordinates computed are also used in invalidateDrawable()
5716            // Make sure to update invalidateDrawable() when changing this code.
5717            if (dr.mShowing[Drawables.BOTTOM] != null) {
5718                canvas.save();
5719                canvas.translate(scrollX + compoundPaddingLeft +
5720                        (hspace - dr.mDrawableWidthBottom) / 2,
5721                         scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom);
5722                dr.mShowing[Drawables.BOTTOM].draw(canvas);
5723                canvas.restore();
5724            }
5725        }
5726
5727        int color = mCurTextColor;
5728
5729        if (mLayout == null) {
5730            assumeLayout();
5731        }
5732
5733        Layout layout = mLayout;
5734
5735        if (mHint != null && mText.length() == 0) {
5736            if (mHintTextColor != null) {
5737                color = mCurHintTextColor;
5738            }
5739
5740            layout = mHintLayout;
5741        }
5742
5743        mTextPaint.setColor(color);
5744        mTextPaint.drawableState = getDrawableState();
5745
5746        canvas.save();
5747        /*  Would be faster if we didn't have to do this. Can we chop the
5748            (displayable) text so that we don't need to do this ever?
5749        */
5750
5751        int extendedPaddingTop = getExtendedPaddingTop();
5752        int extendedPaddingBottom = getExtendedPaddingBottom();
5753
5754        final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop;
5755        final int maxScrollY = mLayout.getHeight() - vspace;
5756
5757        float clipLeft = compoundPaddingLeft + scrollX;
5758        float clipTop = (scrollY == 0) ? 0 : extendedPaddingTop + scrollY;
5759        float clipRight = right - left - getFudgedPaddingRight() + scrollX;
5760        float clipBottom = bottom - top + scrollY -
5761                ((scrollY == maxScrollY) ? 0 : extendedPaddingBottom);
5762
5763        if (mShadowRadius != 0) {
5764            clipLeft += Math.min(0, mShadowDx - mShadowRadius);
5765            clipRight += Math.max(0, mShadowDx + mShadowRadius);
5766
5767            clipTop += Math.min(0, mShadowDy - mShadowRadius);
5768            clipBottom += Math.max(0, mShadowDy + mShadowRadius);
5769        }
5770
5771        canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom);
5772
5773        int voffsetText = 0;
5774        int voffsetCursor = 0;
5775
5776        // translate in by our padding
5777        /* shortcircuit calling getVerticaOffset() */
5778        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5779            voffsetText = getVerticalOffset(false);
5780            voffsetCursor = getVerticalOffset(true);
5781        }
5782        canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText);
5783
5784        final int layoutDirection = getLayoutDirection();
5785        final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
5786        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
5787                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
5788            if (!mSingleLine && getLineCount() == 1 && canMarquee() &&
5789                    (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) {
5790                final int width = mRight - mLeft;
5791                final int padding = getCompoundPaddingLeft() + getCompoundPaddingRight();
5792                final float dx = mLayout.getLineRight(0) - (width - padding);
5793                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5794            }
5795
5796            if (mMarquee != null && mMarquee.isRunning()) {
5797                final float dx = -mMarquee.getScroll();
5798                canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5799            }
5800        }
5801
5802        final int cursorOffsetVertical = voffsetCursor - voffsetText;
5803
5804        Path highlight = getUpdatedHighlightPath();
5805        if (mEditor != null) {
5806            mEditor.onDraw(canvas, layout, highlight, mHighlightPaint, cursorOffsetVertical);
5807        } else {
5808            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5809        }
5810
5811        if (mMarquee != null && mMarquee.shouldDrawGhost()) {
5812            final float dx = mMarquee.getGhostOffset();
5813            canvas.translate(layout.getParagraphDirection(0) * dx, 0.0f);
5814            layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical);
5815        }
5816
5817        canvas.restore();
5818    }
5819
5820    @Override
5821    public void getFocusedRect(Rect r) {
5822        if (mLayout == null) {
5823            super.getFocusedRect(r);
5824            return;
5825        }
5826
5827        int selEnd = getSelectionEnd();
5828        if (selEnd < 0) {
5829            super.getFocusedRect(r);
5830            return;
5831        }
5832
5833        int selStart = getSelectionStart();
5834        if (selStart < 0 || selStart >= selEnd) {
5835            int line = mLayout.getLineForOffset(selEnd);
5836            r.top = mLayout.getLineTop(line);
5837            r.bottom = mLayout.getLineBottom(line);
5838            r.left = (int) mLayout.getPrimaryHorizontal(selEnd) - 2;
5839            r.right = r.left + 4;
5840        } else {
5841            int lineStart = mLayout.getLineForOffset(selStart);
5842            int lineEnd = mLayout.getLineForOffset(selEnd);
5843            r.top = mLayout.getLineTop(lineStart);
5844            r.bottom = mLayout.getLineBottom(lineEnd);
5845            if (lineStart == lineEnd) {
5846                r.left = (int) mLayout.getPrimaryHorizontal(selStart);
5847                r.right = (int) mLayout.getPrimaryHorizontal(selEnd);
5848            } else {
5849                // Selection extends across multiple lines -- make the focused
5850                // rect cover the entire width.
5851                if (mHighlightPathBogus) {
5852                    if (mHighlightPath == null) mHighlightPath = new Path();
5853                    mHighlightPath.reset();
5854                    mLayout.getSelectionPath(selStart, selEnd, mHighlightPath);
5855                    mHighlightPathBogus = false;
5856                }
5857                synchronized (TEMP_RECTF) {
5858                    mHighlightPath.computeBounds(TEMP_RECTF, true);
5859                    r.left = (int)TEMP_RECTF.left-1;
5860                    r.right = (int)TEMP_RECTF.right+1;
5861                }
5862            }
5863        }
5864
5865        // Adjust for padding and gravity.
5866        int paddingLeft = getCompoundPaddingLeft();
5867        int paddingTop = getExtendedPaddingTop();
5868        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5869            paddingTop += getVerticalOffset(false);
5870        }
5871        r.offset(paddingLeft, paddingTop);
5872        int paddingBottom = getExtendedPaddingBottom();
5873        r.bottom += paddingBottom;
5874    }
5875
5876    /**
5877     * Return the number of lines of text, or 0 if the internal Layout has not
5878     * been built.
5879     */
5880    public int getLineCount() {
5881        return mLayout != null ? mLayout.getLineCount() : 0;
5882    }
5883
5884    /**
5885     * Return the baseline for the specified line (0...getLineCount() - 1)
5886     * If bounds is not null, return the top, left, right, bottom extents
5887     * of the specified line in it. If the internal Layout has not been built,
5888     * return 0 and set bounds to (0, 0, 0, 0)
5889     * @param line which line to examine (0..getLineCount() - 1)
5890     * @param bounds Optional. If not null, it returns the extent of the line
5891     * @return the Y-coordinate of the baseline
5892     */
5893    public int getLineBounds(int line, Rect bounds) {
5894        if (mLayout == null) {
5895            if (bounds != null) {
5896                bounds.set(0, 0, 0, 0);
5897            }
5898            return 0;
5899        }
5900        else {
5901            int baseline = mLayout.getLineBounds(line, bounds);
5902
5903            int voffset = getExtendedPaddingTop();
5904            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5905                voffset += getVerticalOffset(true);
5906            }
5907            if (bounds != null) {
5908                bounds.offset(getCompoundPaddingLeft(), voffset);
5909            }
5910            return baseline + voffset;
5911        }
5912    }
5913
5914    @Override
5915    public int getBaseline() {
5916        if (mLayout == null) {
5917            return super.getBaseline();
5918        }
5919
5920        return getBaselineOffset() + mLayout.getLineBaseline(0);
5921    }
5922
5923    int getBaselineOffset() {
5924        int voffset = 0;
5925        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5926            voffset = getVerticalOffset(true);
5927        }
5928
5929        if (isLayoutModeOptical(mParent)) {
5930            voffset -= getOpticalInsets().top;
5931        }
5932
5933        return getExtendedPaddingTop() + voffset;
5934    }
5935
5936    /**
5937     * @hide
5938     */
5939    @Override
5940    protected int getFadeTop(boolean offsetRequired) {
5941        if (mLayout == null) return 0;
5942
5943        int voffset = 0;
5944        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
5945            voffset = getVerticalOffset(true);
5946        }
5947
5948        if (offsetRequired) voffset += getTopPaddingOffset();
5949
5950        return getExtendedPaddingTop() + voffset;
5951    }
5952
5953    /**
5954     * @hide
5955     */
5956    @Override
5957    protected int getFadeHeight(boolean offsetRequired) {
5958        return mLayout != null ? mLayout.getHeight() : 0;
5959    }
5960
5961    /**
5962     * @hide
5963     */
5964    @Override
5965    public int getPointerShape(MotionEvent event, float x, float y) {
5966        if (isTextSelectable() || isTextEditable()) {
5967            return PointerIcon.STYLE_TEXT;
5968        }
5969        return super.getPointerShape(event, x, y);
5970    }
5971
5972    @Override
5973    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
5974        // Note: If the IME is in fullscreen mode and IMS#mExtractEditText is in text action mode,
5975        // InputMethodService#onKeyDown and InputMethodService#onKeyUp are responsible to call
5976        // InputMethodService#mExtractEditText.maybeHandleBackInTextActionMode(event).
5977        if (keyCode == KeyEvent.KEYCODE_BACK && handleBackInTextActionModeIfNeeded(event)) {
5978            return true;
5979        }
5980        return super.onKeyPreIme(keyCode, event);
5981    }
5982
5983    /**
5984     * @hide
5985     */
5986    public boolean handleBackInTextActionModeIfNeeded(KeyEvent event) {
5987        // Do nothing unless mEditor is in text action mode.
5988        if (mEditor == null || mEditor.mTextActionMode == null) {
5989            return false;
5990        }
5991
5992        if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
5993            KeyEvent.DispatcherState state = getKeyDispatcherState();
5994            if (state != null) {
5995                state.startTracking(event, this);
5996            }
5997            return true;
5998        } else if (event.getAction() == KeyEvent.ACTION_UP) {
5999            KeyEvent.DispatcherState state = getKeyDispatcherState();
6000            if (state != null) {
6001                state.handleUpEvent(event);
6002            }
6003            if (event.isTracking() && !event.isCanceled()) {
6004                stopTextActionMode();
6005                return true;
6006            }
6007        }
6008        return false;
6009    }
6010
6011    @Override
6012    public boolean onKeyDown(int keyCode, KeyEvent event) {
6013        final int which = doKeyDown(keyCode, event, null);
6014        if (which == KEY_EVENT_NOT_HANDLED) {
6015            return super.onKeyDown(keyCode, event);
6016        }
6017
6018        return true;
6019    }
6020
6021    @Override
6022    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
6023        KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN);
6024        final int which = doKeyDown(keyCode, down, event);
6025        if (which == KEY_EVENT_NOT_HANDLED) {
6026            // Go through default dispatching.
6027            return super.onKeyMultiple(keyCode, repeatCount, event);
6028        }
6029        if (which == KEY_EVENT_HANDLED) {
6030            // Consumed the whole thing.
6031            return true;
6032        }
6033
6034        repeatCount--;
6035
6036        // We are going to dispatch the remaining events to either the input
6037        // or movement method.  To do this, we will just send a repeated stream
6038        // of down and up events until we have done the complete repeatCount.
6039        // It would be nice if those interfaces had an onKeyMultiple() method,
6040        // but adding that is a more complicated change.
6041        KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP);
6042        if (which == KEY_DOWN_HANDLED_BY_KEY_LISTENER) {
6043            // mEditor and mEditor.mInput are not null from doKeyDown
6044            mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
6045            while (--repeatCount > 0) {
6046                mEditor.mKeyListener.onKeyDown(this, (Editable)mText, keyCode, down);
6047                mEditor.mKeyListener.onKeyUp(this, (Editable)mText, keyCode, up);
6048            }
6049            hideErrorIfUnchanged();
6050
6051        } else if (which == KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD) {
6052            // mMovement is not null from doKeyDown
6053            mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6054            while (--repeatCount > 0) {
6055                mMovement.onKeyDown(this, (Spannable)mText, keyCode, down);
6056                mMovement.onKeyUp(this, (Spannable)mText, keyCode, up);
6057            }
6058        }
6059
6060        return true;
6061    }
6062
6063    /**
6064     * Returns true if pressing ENTER in this field advances focus instead
6065     * of inserting the character.  This is true mostly in single-line fields,
6066     * but also in mail addresses and subjects which will display on multiple
6067     * lines but where it doesn't make sense to insert newlines.
6068     */
6069    private boolean shouldAdvanceFocusOnEnter() {
6070        if (getKeyListener() == null) {
6071            return false;
6072        }
6073
6074        if (mSingleLine) {
6075            return true;
6076        }
6077
6078        if (mEditor != null &&
6079                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6080            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6081            if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
6082                    || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) {
6083                return true;
6084            }
6085        }
6086
6087        return false;
6088    }
6089
6090    /**
6091     * Returns true if pressing TAB in this field advances focus instead
6092     * of inserting the character.  Insert tabs only in multi-line editors.
6093     */
6094    private boolean shouldAdvanceFocusOnTab() {
6095        if (getKeyListener() != null && !mSingleLine && mEditor != null &&
6096                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
6097            int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
6098            if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE
6099                    || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) {
6100                return false;
6101            }
6102        }
6103        return true;
6104    }
6105
6106    private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) {
6107        if (!isEnabled()) {
6108            return KEY_EVENT_NOT_HANDLED;
6109        }
6110
6111        // If this is the initial keydown, we don't want to prevent a movement away from this view.
6112        // While this shouldn't be necessary because any time we're preventing default movement we
6113        // should be restricting the focus to remain within this view, thus we'll also receive
6114        // the key up event, occasionally key up events will get dropped and we don't want to
6115        // prevent the user from traversing out of this on the next key down.
6116        if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6117            mPreventDefaultMovement = false;
6118        }
6119
6120        switch (keyCode) {
6121            case KeyEvent.KEYCODE_ENTER:
6122                if (event.hasNoModifiers()) {
6123                    // When mInputContentType is set, we know that we are
6124                    // running in a "modern" cupcake environment, so don't need
6125                    // to worry about the application trying to capture
6126                    // enter key events.
6127                    if (mEditor != null && mEditor.mInputContentType != null) {
6128                        // If there is an action listener, given them a
6129                        // chance to consume the event.
6130                        if (mEditor.mInputContentType.onEditorActionListener != null &&
6131                                mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6132                                this, EditorInfo.IME_NULL, event)) {
6133                            mEditor.mInputContentType.enterDown = true;
6134                            // We are consuming the enter key for them.
6135                            return KEY_EVENT_HANDLED;
6136                        }
6137                    }
6138
6139                    // If our editor should move focus when enter is pressed, or
6140                    // this is a generated event from an IME action button, then
6141                    // don't let it be inserted into the text.
6142                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6143                            || shouldAdvanceFocusOnEnter()) {
6144                        if (hasOnClickListeners()) {
6145                            return KEY_EVENT_NOT_HANDLED;
6146                        }
6147                        return KEY_EVENT_HANDLED;
6148                    }
6149                }
6150                break;
6151
6152            case KeyEvent.KEYCODE_DPAD_CENTER:
6153                if (event.hasNoModifiers()) {
6154                    if (shouldAdvanceFocusOnEnter()) {
6155                        return KEY_EVENT_NOT_HANDLED;
6156                    }
6157                }
6158                break;
6159
6160            case KeyEvent.KEYCODE_TAB:
6161                if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
6162                    if (shouldAdvanceFocusOnTab()) {
6163                        return KEY_EVENT_NOT_HANDLED;
6164                    }
6165                }
6166                break;
6167
6168                // Has to be done on key down (and not on key up) to correctly be intercepted.
6169            case KeyEvent.KEYCODE_BACK:
6170                if (mEditor != null && mEditor.mTextActionMode != null) {
6171                    stopTextActionMode();
6172                    return KEY_EVENT_HANDLED;
6173                }
6174                break;
6175
6176            case KeyEvent.KEYCODE_CUT:
6177                if (event.hasNoModifiers() && canCut()) {
6178                    if (onTextContextMenuItem(ID_CUT)) {
6179                        return KEY_EVENT_HANDLED;
6180                    }
6181                }
6182                break;
6183
6184            case KeyEvent.KEYCODE_COPY:
6185                if (event.hasNoModifiers() && canCopy()) {
6186                    if (onTextContextMenuItem(ID_COPY)) {
6187                        return KEY_EVENT_HANDLED;
6188                    }
6189                }
6190                break;
6191
6192            case KeyEvent.KEYCODE_PASTE:
6193                if (event.hasNoModifiers() && canPaste()) {
6194                    if (onTextContextMenuItem(ID_PASTE)) {
6195                        return KEY_EVENT_HANDLED;
6196                    }
6197                }
6198                break;
6199        }
6200
6201        if (mEditor != null && mEditor.mKeyListener != null) {
6202            boolean doDown = true;
6203            if (otherEvent != null) {
6204                try {
6205                    beginBatchEdit();
6206                    final boolean handled = mEditor.mKeyListener.onKeyOther(this, (Editable) mText,
6207                            otherEvent);
6208                    hideErrorIfUnchanged();
6209                    doDown = false;
6210                    if (handled) {
6211                        return KEY_EVENT_HANDLED;
6212                    }
6213                } catch (AbstractMethodError e) {
6214                    // onKeyOther was added after 1.0, so if it isn't
6215                    // implemented we need to try to dispatch as a regular down.
6216                } finally {
6217                    endBatchEdit();
6218                }
6219            }
6220
6221            if (doDown) {
6222                beginBatchEdit();
6223                final boolean handled = mEditor.mKeyListener.onKeyDown(this, (Editable) mText,
6224                        keyCode, event);
6225                endBatchEdit();
6226                hideErrorIfUnchanged();
6227                if (handled) return KEY_DOWN_HANDLED_BY_KEY_LISTENER;
6228            }
6229        }
6230
6231        // bug 650865: sometimes we get a key event before a layout.
6232        // don't try to move around if we don't know the layout.
6233
6234        if (mMovement != null && mLayout != null) {
6235            boolean doDown = true;
6236            if (otherEvent != null) {
6237                try {
6238                    boolean handled = mMovement.onKeyOther(this, (Spannable) mText,
6239                            otherEvent);
6240                    doDown = false;
6241                    if (handled) {
6242                        return KEY_EVENT_HANDLED;
6243                    }
6244                } catch (AbstractMethodError e) {
6245                    // onKeyOther was added after 1.0, so if it isn't
6246                    // implemented we need to try to dispatch as a regular down.
6247                }
6248            }
6249            if (doDown) {
6250                if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event)) {
6251                    if (event.getRepeatCount() == 0 && !KeyEvent.isModifierKey(keyCode)) {
6252                        mPreventDefaultMovement = true;
6253                    }
6254                    return KEY_DOWN_HANDLED_BY_MOVEMENT_METHOD;
6255                }
6256            }
6257        }
6258
6259        return mPreventDefaultMovement && !KeyEvent.isModifierKey(keyCode) ?
6260                KEY_EVENT_HANDLED : KEY_EVENT_NOT_HANDLED;
6261    }
6262
6263    /**
6264     * Resets the mErrorWasChanged flag, so that future calls to {@link #setError(CharSequence)}
6265     * can be recorded.
6266     * @hide
6267     */
6268    public void resetErrorChangedFlag() {
6269        /*
6270         * Keep track of what the error was before doing the input
6271         * so that if an input filter changed the error, we leave
6272         * that error showing.  Otherwise, we take down whatever
6273         * error was showing when the user types something.
6274         */
6275        if (mEditor != null) mEditor.mErrorWasChanged = false;
6276    }
6277
6278    /**
6279     * @hide
6280     */
6281    public void hideErrorIfUnchanged() {
6282        if (mEditor != null && mEditor.mError != null && !mEditor.mErrorWasChanged) {
6283            setError(null, null);
6284        }
6285    }
6286
6287    @Override
6288    public boolean onKeyUp(int keyCode, KeyEvent event) {
6289        if (!isEnabled()) {
6290            return super.onKeyUp(keyCode, event);
6291        }
6292
6293        if (!KeyEvent.isModifierKey(keyCode)) {
6294            mPreventDefaultMovement = false;
6295        }
6296
6297        switch (keyCode) {
6298            case KeyEvent.KEYCODE_DPAD_CENTER:
6299                if (event.hasNoModifiers()) {
6300                    /*
6301                     * If there is a click listener, just call through to
6302                     * super, which will invoke it.
6303                     *
6304                     * If there isn't a click listener, try to show the soft
6305                     * input method.  (It will also
6306                     * call performClick(), but that won't do anything in
6307                     * this case.)
6308                     */
6309                    if (!hasOnClickListeners()) {
6310                        if (mMovement != null && mText instanceof Editable
6311                                && mLayout != null && onCheckIsTextEditor()) {
6312                            InputMethodManager imm = InputMethodManager.peekInstance();
6313                            viewClicked(imm);
6314                            if (imm != null && getShowSoftInputOnFocus()) {
6315                                imm.showSoftInput(this, 0);
6316                            }
6317                        }
6318                    }
6319                }
6320                return super.onKeyUp(keyCode, event);
6321
6322            case KeyEvent.KEYCODE_ENTER:
6323                if (event.hasNoModifiers()) {
6324                    if (mEditor != null && mEditor.mInputContentType != null
6325                            && mEditor.mInputContentType.onEditorActionListener != null
6326                            && mEditor.mInputContentType.enterDown) {
6327                        mEditor.mInputContentType.enterDown = false;
6328                        if (mEditor.mInputContentType.onEditorActionListener.onEditorAction(
6329                                this, EditorInfo.IME_NULL, event)) {
6330                            return true;
6331                        }
6332                    }
6333
6334                    if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0
6335                            || shouldAdvanceFocusOnEnter()) {
6336                        /*
6337                         * If there is a click listener, just call through to
6338                         * super, which will invoke it.
6339                         *
6340                         * If there isn't a click listener, try to advance focus,
6341                         * but still call through to super, which will reset the
6342                         * pressed state and longpress state.  (It will also
6343                         * call performClick(), but that won't do anything in
6344                         * this case.)
6345                         */
6346                        if (!hasOnClickListeners()) {
6347                            View v = focusSearch(FOCUS_DOWN);
6348
6349                            if (v != null) {
6350                                if (!v.requestFocus(FOCUS_DOWN)) {
6351                                    throw new IllegalStateException(
6352                                            "focus search returned a view " +
6353                                            "that wasn't able to take focus!");
6354                                }
6355
6356                                /*
6357                                 * Return true because we handled the key; super
6358                                 * will return false because there was no click
6359                                 * listener.
6360                                 */
6361                                super.onKeyUp(keyCode, event);
6362                                return true;
6363                            } else if ((event.getFlags()
6364                                    & KeyEvent.FLAG_EDITOR_ACTION) != 0) {
6365                                // No target for next focus, but make sure the IME
6366                                // if this came from it.
6367                                InputMethodManager imm = InputMethodManager.peekInstance();
6368                                if (imm != null && imm.isActive(this)) {
6369                                    imm.hideSoftInputFromWindow(getWindowToken(), 0);
6370                                }
6371                            }
6372                        }
6373                    }
6374                    return super.onKeyUp(keyCode, event);
6375                }
6376                break;
6377        }
6378
6379        if (mEditor != null && mEditor.mKeyListener != null)
6380            if (mEditor.mKeyListener.onKeyUp(this, (Editable) mText, keyCode, event))
6381                return true;
6382
6383        if (mMovement != null && mLayout != null)
6384            if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event))
6385                return true;
6386
6387        return super.onKeyUp(keyCode, event);
6388    }
6389
6390    @Override
6391    public boolean onCheckIsTextEditor() {
6392        return mEditor != null && mEditor.mInputType != EditorInfo.TYPE_NULL;
6393    }
6394
6395    @Override
6396    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
6397        if (onCheckIsTextEditor() && isEnabled()) {
6398            mEditor.createInputMethodStateIfNeeded();
6399            outAttrs.inputType = getInputType();
6400            if (mEditor.mInputContentType != null) {
6401                outAttrs.imeOptions = mEditor.mInputContentType.imeOptions;
6402                outAttrs.privateImeOptions = mEditor.mInputContentType.privateImeOptions;
6403                outAttrs.actionLabel = mEditor.mInputContentType.imeActionLabel;
6404                outAttrs.actionId = mEditor.mInputContentType.imeActionId;
6405                outAttrs.extras = mEditor.mInputContentType.extras;
6406            } else {
6407                outAttrs.imeOptions = EditorInfo.IME_NULL;
6408            }
6409            if (focusSearch(FOCUS_DOWN) != null) {
6410                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT;
6411            }
6412            if (focusSearch(FOCUS_UP) != null) {
6413                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
6414            }
6415            if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION)
6416                    == EditorInfo.IME_ACTION_UNSPECIFIED) {
6417                if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
6418                    // An action has not been set, but the enter key will move to
6419                    // the next focus, so set the action to that.
6420                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
6421                } else {
6422                    // An action has not been set, and there is no focus to move
6423                    // to, so let's just supply a "done" action.
6424                    outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
6425                }
6426                if (!shouldAdvanceFocusOnEnter()) {
6427                    outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6428                }
6429            }
6430            if (isMultilineInputType(outAttrs.inputType)) {
6431                // Multi-line text editors should always show an enter key.
6432                outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION;
6433            }
6434            outAttrs.hintText = mHint;
6435            if (mText instanceof Editable) {
6436                InputConnection ic = new EditableInputConnection(this);
6437                outAttrs.initialSelStart = getSelectionStart();
6438                outAttrs.initialSelEnd = getSelectionEnd();
6439                outAttrs.initialCapsMode = ic.getCursorCapsMode(getInputType());
6440                return ic;
6441            }
6442            // LocaleList is designed to be immutable.  This is theoretically equivalent to copy
6443            // the snapshot of the current text locales.
6444            outAttrs.locales = getTextLocales();
6445        }
6446        return null;
6447    }
6448
6449    /**
6450     * If this TextView contains editable content, extract a portion of it
6451     * based on the information in <var>request</var> in to <var>outText</var>.
6452     * @return Returns true if the text was successfully extracted, else false.
6453     */
6454    public boolean extractText(ExtractedTextRequest request, ExtractedText outText) {
6455        createEditorIfNeeded();
6456        return mEditor.extractText(request, outText);
6457    }
6458
6459    /**
6460     * This is used to remove all style-impacting spans from text before new
6461     * extracted text is being replaced into it, so that we don't have any
6462     * lingering spans applied during the replace.
6463     */
6464    static void removeParcelableSpans(Spannable spannable, int start, int end) {
6465        Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class);
6466        int i = spans.length;
6467        while (i > 0) {
6468            i--;
6469            spannable.removeSpan(spans[i]);
6470        }
6471    }
6472
6473    /**
6474     * Apply to this text view the given extracted text, as previously
6475     * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}.
6476     */
6477    public void setExtractedText(ExtractedText text) {
6478        Editable content = getEditableText();
6479        if (text.text != null) {
6480            if (content == null) {
6481                setText(text.text, TextView.BufferType.EDITABLE);
6482            } else {
6483                int start = 0;
6484                int end = content.length();
6485
6486                if (text.partialStartOffset >= 0) {
6487                    final int N = content.length();
6488                    start = text.partialStartOffset;
6489                    if (start > N) start = N;
6490                    end = text.partialEndOffset;
6491                    if (end > N) end = N;
6492                }
6493
6494                removeParcelableSpans(content, start, end);
6495                if (TextUtils.equals(content.subSequence(start, end), text.text)) {
6496                    if (text.text instanceof Spanned) {
6497                        // OK to copy spans only.
6498                        TextUtils.copySpansFrom((Spanned) text.text, start, end,
6499                                Object.class, content, start);
6500                    }
6501                } else {
6502                    content.replace(start, end, text.text);
6503                }
6504            }
6505        }
6506
6507        // Now set the selection position...  make sure it is in range, to
6508        // avoid crashes.  If this is a partial update, it is possible that
6509        // the underlying text may have changed, causing us problems here.
6510        // Also we just don't want to trust clients to do the right thing.
6511        Spannable sp = (Spannable)getText();
6512        final int N = sp.length();
6513        int start = text.selectionStart;
6514        if (start < 0) start = 0;
6515        else if (start > N) start = N;
6516        int end = text.selectionEnd;
6517        if (end < 0) end = 0;
6518        else if (end > N) end = N;
6519        Selection.setSelection(sp, start, end);
6520
6521        // Finally, update the selection mode.
6522        if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) {
6523            MetaKeyKeyListener.startSelecting(this, sp);
6524        } else {
6525            MetaKeyKeyListener.stopSelecting(this, sp);
6526        }
6527    }
6528
6529    /**
6530     * @hide
6531     */
6532    public void setExtracting(ExtractedTextRequest req) {
6533        if (mEditor.mInputMethodState != null) {
6534            mEditor.mInputMethodState.mExtractedTextRequest = req;
6535        }
6536        // This would stop a possible selection mode, but no such mode is started in case
6537        // extracted mode will start. Some text is selected though, and will trigger an action mode
6538        // in the extracted view.
6539        mEditor.hideCursorAndSpanControllers();
6540        stopTextActionMode();
6541    }
6542
6543    /**
6544     * Called by the framework in response to a text completion from
6545     * the current input method, provided by it calling
6546     * {@link InputConnection#commitCompletion
6547     * InputConnection.commitCompletion()}.  The default implementation does
6548     * nothing; text views that are supporting auto-completion should override
6549     * this to do their desired behavior.
6550     *
6551     * @param text The auto complete text the user has selected.
6552     */
6553    public void onCommitCompletion(CompletionInfo text) {
6554        // intentionally empty
6555    }
6556
6557    /**
6558     * Called by the framework in response to a text auto-correction (such as fixing a typo using a
6559     * a dictionnary) from the current input method, provided by it calling
6560     * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default
6561     * implementation flashes the background of the corrected word to provide feedback to the user.
6562     *
6563     * @param info The auto correct info about the text that was corrected.
6564     */
6565    public void onCommitCorrection(CorrectionInfo info) {
6566        if (mEditor != null) mEditor.onCommitCorrection(info);
6567    }
6568
6569    public void beginBatchEdit() {
6570        if (mEditor != null) mEditor.beginBatchEdit();
6571    }
6572
6573    public void endBatchEdit() {
6574        if (mEditor != null) mEditor.endBatchEdit();
6575    }
6576
6577    /**
6578     * Called by the framework in response to a request to begin a batch
6579     * of edit operations through a call to link {@link #beginBatchEdit()}.
6580     */
6581    public void onBeginBatchEdit() {
6582        // intentionally empty
6583    }
6584
6585    /**
6586     * Called by the framework in response to a request to end a batch
6587     * of edit operations through a call to link {@link #endBatchEdit}.
6588     */
6589    public void onEndBatchEdit() {
6590        // intentionally empty
6591    }
6592
6593    /**
6594     * Called by the framework in response to a private command from the
6595     * current method, provided by it calling
6596     * {@link InputConnection#performPrivateCommand
6597     * InputConnection.performPrivateCommand()}.
6598     *
6599     * @param action The action name of the command.
6600     * @param data Any additional data for the command.  This may be null.
6601     * @return Return true if you handled the command, else false.
6602     */
6603    public boolean onPrivateIMECommand(String action, Bundle data) {
6604        return false;
6605    }
6606
6607    private void nullLayouts() {
6608        if (mLayout instanceof BoringLayout && mSavedLayout == null) {
6609            mSavedLayout = (BoringLayout) mLayout;
6610        }
6611        if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) {
6612            mSavedHintLayout = (BoringLayout) mHintLayout;
6613        }
6614
6615        mSavedMarqueeModeLayout = mLayout = mHintLayout = null;
6616
6617        mBoring = mHintBoring = null;
6618
6619        // Since it depends on the value of mLayout
6620        if (mEditor != null) mEditor.prepareCursorControllers();
6621    }
6622
6623    /**
6624     * Make a new Layout based on the already-measured size of the view,
6625     * on the assumption that it was measured correctly at some point.
6626     */
6627    private void assumeLayout() {
6628        int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
6629
6630        if (width < 1) {
6631            width = 0;
6632        }
6633
6634        int physicalWidth = width;
6635
6636        if (mHorizontallyScrolling) {
6637            width = VERY_WIDE;
6638        }
6639
6640        makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING,
6641                      physicalWidth, false);
6642    }
6643
6644    private Layout.Alignment getLayoutAlignment() {
6645        Layout.Alignment alignment;
6646        switch (getTextAlignment()) {
6647            case TEXT_ALIGNMENT_GRAVITY:
6648                switch (mGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
6649                    case Gravity.START:
6650                        alignment = Layout.Alignment.ALIGN_NORMAL;
6651                        break;
6652                    case Gravity.END:
6653                        alignment = Layout.Alignment.ALIGN_OPPOSITE;
6654                        break;
6655                    case Gravity.LEFT:
6656                        alignment = Layout.Alignment.ALIGN_LEFT;
6657                        break;
6658                    case Gravity.RIGHT:
6659                        alignment = Layout.Alignment.ALIGN_RIGHT;
6660                        break;
6661                    case Gravity.CENTER_HORIZONTAL:
6662                        alignment = Layout.Alignment.ALIGN_CENTER;
6663                        break;
6664                    default:
6665                        alignment = Layout.Alignment.ALIGN_NORMAL;
6666                        break;
6667                }
6668                break;
6669            case TEXT_ALIGNMENT_TEXT_START:
6670                alignment = Layout.Alignment.ALIGN_NORMAL;
6671                break;
6672            case TEXT_ALIGNMENT_TEXT_END:
6673                alignment = Layout.Alignment.ALIGN_OPPOSITE;
6674                break;
6675            case TEXT_ALIGNMENT_CENTER:
6676                alignment = Layout.Alignment.ALIGN_CENTER;
6677                break;
6678            case TEXT_ALIGNMENT_VIEW_START:
6679                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6680                        Layout.Alignment.ALIGN_RIGHT : Layout.Alignment.ALIGN_LEFT;
6681                break;
6682            case TEXT_ALIGNMENT_VIEW_END:
6683                alignment = (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
6684                        Layout.Alignment.ALIGN_LEFT : Layout.Alignment.ALIGN_RIGHT;
6685                break;
6686            case TEXT_ALIGNMENT_INHERIT:
6687                // This should never happen as we have already resolved the text alignment
6688                // but better safe than sorry so we just fall through
6689            default:
6690                alignment = Layout.Alignment.ALIGN_NORMAL;
6691                break;
6692        }
6693        return alignment;
6694    }
6695
6696    /**
6697     * The width passed in is now the desired layout width,
6698     * not the full view width with padding.
6699     * {@hide}
6700     */
6701    protected void makeNewLayout(int wantWidth, int hintWidth,
6702                                 BoringLayout.Metrics boring,
6703                                 BoringLayout.Metrics hintBoring,
6704                                 int ellipsisWidth, boolean bringIntoView) {
6705        stopMarquee();
6706
6707        // Update "old" cached values
6708        mOldMaximum = mMaximum;
6709        mOldMaxMode = mMaxMode;
6710
6711        mHighlightPathBogus = true;
6712
6713        if (wantWidth < 0) {
6714            wantWidth = 0;
6715        }
6716        if (hintWidth < 0) {
6717            hintWidth = 0;
6718        }
6719
6720        Layout.Alignment alignment = getLayoutAlignment();
6721        final boolean testDirChange = mSingleLine && mLayout != null &&
6722            (alignment == Layout.Alignment.ALIGN_NORMAL ||
6723             alignment == Layout.Alignment.ALIGN_OPPOSITE);
6724        int oldDir = 0;
6725        if (testDirChange) oldDir = mLayout.getParagraphDirection(0);
6726        boolean shouldEllipsize = mEllipsize != null && getKeyListener() == null;
6727        final boolean switchEllipsize = mEllipsize == TruncateAt.MARQUEE &&
6728                mMarqueeFadeMode != MARQUEE_FADE_NORMAL;
6729        TruncateAt effectiveEllipsize = mEllipsize;
6730        if (mEllipsize == TruncateAt.MARQUEE &&
6731                mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
6732            effectiveEllipsize = TruncateAt.END_SMALL;
6733        }
6734
6735        if (mTextDir == null) {
6736            mTextDir = getTextDirectionHeuristic();
6737        }
6738
6739        mLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment, shouldEllipsize,
6740                effectiveEllipsize, effectiveEllipsize == mEllipsize);
6741        if (switchEllipsize) {
6742            TruncateAt oppositeEllipsize = effectiveEllipsize == TruncateAt.MARQUEE ?
6743                    TruncateAt.END : TruncateAt.MARQUEE;
6744            mSavedMarqueeModeLayout = makeSingleLayout(wantWidth, boring, ellipsisWidth, alignment,
6745                    shouldEllipsize, oppositeEllipsize, effectiveEllipsize != mEllipsize);
6746        }
6747
6748        shouldEllipsize = mEllipsize != null;
6749        mHintLayout = null;
6750
6751        if (mHint != null) {
6752            if (shouldEllipsize) hintWidth = wantWidth;
6753
6754            if (hintBoring == UNKNOWN_BORING) {
6755                hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir,
6756                                                   mHintBoring);
6757                if (hintBoring != null) {
6758                    mHintBoring = hintBoring;
6759                }
6760            }
6761
6762            if (hintBoring != null) {
6763                if (hintBoring.width <= hintWidth &&
6764                    (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) {
6765                    if (mSavedHintLayout != null) {
6766                        mHintLayout = mSavedHintLayout.
6767                                replaceOrMake(mHint, mTextPaint,
6768                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6769                                hintBoring, mIncludePad);
6770                    } else {
6771                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6772                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6773                                hintBoring, mIncludePad);
6774                    }
6775
6776                    mSavedHintLayout = (BoringLayout) mHintLayout;
6777                } else if (shouldEllipsize && hintBoring.width <= hintWidth) {
6778                    if (mSavedHintLayout != null) {
6779                        mHintLayout = mSavedHintLayout.
6780                                replaceOrMake(mHint, mTextPaint,
6781                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6782                                hintBoring, mIncludePad, mEllipsize,
6783                                ellipsisWidth);
6784                    } else {
6785                        mHintLayout = BoringLayout.make(mHint, mTextPaint,
6786                                hintWidth, alignment, mSpacingMult, mSpacingAdd,
6787                                hintBoring, mIncludePad, mEllipsize,
6788                                ellipsisWidth);
6789                    }
6790                }
6791            }
6792            // TODO: code duplication with makeSingleLayout()
6793            if (mHintLayout == null) {
6794                StaticLayout.Builder builder = StaticLayout.Builder.obtain(mHint, 0,
6795                        mHint.length(), mTextPaint, hintWidth)
6796                        .setAlignment(alignment)
6797                        .setTextDirection(mTextDir)
6798                        .setLineSpacing(mSpacingAdd, mSpacingMult)
6799                        .setIncludePad(mIncludePad)
6800                        .setBreakStrategy(mBreakStrategy)
6801                        .setHyphenationFrequency(mHyphenationFrequency);
6802                if (shouldEllipsize) {
6803                    builder.setEllipsize(mEllipsize)
6804                            .setEllipsizedWidth(ellipsisWidth)
6805                            .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6806                }
6807                mHintLayout = builder.build();
6808            }
6809        }
6810
6811        if (bringIntoView || (testDirChange && oldDir != mLayout.getParagraphDirection(0))) {
6812            registerForPreDraw();
6813        }
6814
6815        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
6816            if (!compressText(ellipsisWidth)) {
6817                final int height = mLayoutParams.height;
6818                // If the size of the view does not depend on the size of the text, try to
6819                // start the marquee immediately
6820                if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) {
6821                    startMarquee();
6822                } else {
6823                    // Defer the start of the marquee until we know our width (see setFrame())
6824                    mRestartMarquee = true;
6825                }
6826            }
6827        }
6828
6829        // CursorControllers need a non-null mLayout
6830        if (mEditor != null) mEditor.prepareCursorControllers();
6831    }
6832
6833    /**
6834     * @hide
6835     */
6836    protected Layout makeSingleLayout(int wantWidth, BoringLayout.Metrics boring, int ellipsisWidth,
6837            Layout.Alignment alignment, boolean shouldEllipsize, TruncateAt effectiveEllipsize,
6838            boolean useSaved) {
6839        Layout result = null;
6840        if (mText instanceof Spannable) {
6841            result = new DynamicLayout(mText, mTransformed, mTextPaint, wantWidth,
6842                    alignment, mTextDir, mSpacingMult, mSpacingAdd, mIncludePad,
6843                    mBreakStrategy, mHyphenationFrequency,
6844                    getKeyListener() == null ? effectiveEllipsize : null, ellipsisWidth);
6845        } else {
6846            if (boring == UNKNOWN_BORING) {
6847                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
6848                if (boring != null) {
6849                    mBoring = boring;
6850                }
6851            }
6852
6853            if (boring != null) {
6854                if (boring.width <= wantWidth &&
6855                        (effectiveEllipsize == null || boring.width <= ellipsisWidth)) {
6856                    if (useSaved && mSavedLayout != null) {
6857                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6858                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6859                                boring, mIncludePad);
6860                    } else {
6861                        result = BoringLayout.make(mTransformed, mTextPaint,
6862                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6863                                boring, mIncludePad);
6864                    }
6865
6866                    if (useSaved) {
6867                        mSavedLayout = (BoringLayout) result;
6868                    }
6869                } else if (shouldEllipsize && boring.width <= wantWidth) {
6870                    if (useSaved && mSavedLayout != null) {
6871                        result = mSavedLayout.replaceOrMake(mTransformed, mTextPaint,
6872                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6873                                boring, mIncludePad, effectiveEllipsize,
6874                                ellipsisWidth);
6875                    } else {
6876                        result = BoringLayout.make(mTransformed, mTextPaint,
6877                                wantWidth, alignment, mSpacingMult, mSpacingAdd,
6878                                boring, mIncludePad, effectiveEllipsize,
6879                                ellipsisWidth);
6880                    }
6881                }
6882            }
6883        }
6884        if (result == null) {
6885            StaticLayout.Builder builder = StaticLayout.Builder.obtain(mTransformed,
6886                    0, mTransformed.length(), mTextPaint, wantWidth)
6887                    .setAlignment(alignment)
6888                    .setTextDirection(mTextDir)
6889                    .setLineSpacing(mSpacingAdd, mSpacingMult)
6890                    .setIncludePad(mIncludePad)
6891                    .setBreakStrategy(mBreakStrategy)
6892                    .setHyphenationFrequency(mHyphenationFrequency);
6893            if (shouldEllipsize) {
6894                builder.setEllipsize(effectiveEllipsize)
6895                        .setEllipsizedWidth(ellipsisWidth)
6896                        .setMaxLines(mMaxMode == LINES ? mMaximum : Integer.MAX_VALUE);
6897            }
6898            // TODO: explore always setting maxLines
6899            result = builder.build();
6900        }
6901        return result;
6902    }
6903
6904    private boolean compressText(float width) {
6905        if (isHardwareAccelerated()) return false;
6906
6907        // Only compress the text if it hasn't been compressed by the previous pass
6908        if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX &&
6909                mTextPaint.getTextScaleX() == 1.0f) {
6910            final float textWidth = mLayout.getLineWidth(0);
6911            final float overflow = (textWidth + 1.0f - width) / width;
6912            if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) {
6913                mTextPaint.setTextScaleX(1.0f - overflow - 0.005f);
6914                post(new Runnable() {
6915                    public void run() {
6916                        requestLayout();
6917                    }
6918                });
6919                return true;
6920            }
6921        }
6922
6923        return false;
6924    }
6925
6926    private static int desired(Layout layout) {
6927        int n = layout.getLineCount();
6928        CharSequence text = layout.getText();
6929        float max = 0;
6930
6931        // if any line was wrapped, we can't use it.
6932        // but it's ok for the last line not to have a newline
6933
6934        for (int i = 0; i < n - 1; i++) {
6935            if (text.charAt(layout.getLineEnd(i) - 1) != '\n')
6936                return -1;
6937        }
6938
6939        for (int i = 0; i < n; i++) {
6940            max = Math.max(max, layout.getLineWidth(i));
6941        }
6942
6943        return (int) Math.ceil(max);
6944    }
6945
6946    /**
6947     * Set whether the TextView includes extra top and bottom padding to make
6948     * room for accents that go above the normal ascent and descent.
6949     * The default is true.
6950     *
6951     * @see #getIncludeFontPadding()
6952     *
6953     * @attr ref android.R.styleable#TextView_includeFontPadding
6954     */
6955    public void setIncludeFontPadding(boolean includepad) {
6956        if (mIncludePad != includepad) {
6957            mIncludePad = includepad;
6958
6959            if (mLayout != null) {
6960                nullLayouts();
6961                requestLayout();
6962                invalidate();
6963            }
6964        }
6965    }
6966
6967    /**
6968     * Gets whether the TextView includes extra top and bottom padding to make
6969     * room for accents that go above the normal ascent and descent.
6970     *
6971     * @see #setIncludeFontPadding(boolean)
6972     *
6973     * @attr ref android.R.styleable#TextView_includeFontPadding
6974     */
6975    public boolean getIncludeFontPadding() {
6976        return mIncludePad;
6977    }
6978
6979    private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics();
6980
6981    @Override
6982    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
6983        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
6984        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
6985        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
6986        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
6987
6988        int width;
6989        int height;
6990
6991        BoringLayout.Metrics boring = UNKNOWN_BORING;
6992        BoringLayout.Metrics hintBoring = UNKNOWN_BORING;
6993
6994        if (mTextDir == null) {
6995            mTextDir = getTextDirectionHeuristic();
6996        }
6997
6998        int des = -1;
6999        boolean fromexisting = false;
7000
7001        if (widthMode == MeasureSpec.EXACTLY) {
7002            // Parent has told us how big to be. So be it.
7003            width = widthSize;
7004        } else {
7005            if (mLayout != null && mEllipsize == null) {
7006                des = desired(mLayout);
7007            }
7008
7009            if (des < 0) {
7010                boring = BoringLayout.isBoring(mTransformed, mTextPaint, mTextDir, mBoring);
7011                if (boring != null) {
7012                    mBoring = boring;
7013                }
7014            } else {
7015                fromexisting = true;
7016            }
7017
7018            if (boring == null || boring == UNKNOWN_BORING) {
7019                if (des < 0) {
7020                    des = (int) Math.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint));
7021                }
7022                width = des;
7023            } else {
7024                width = boring.width;
7025            }
7026
7027            final Drawables dr = mDrawables;
7028            if (dr != null) {
7029                width = Math.max(width, dr.mDrawableWidthTop);
7030                width = Math.max(width, dr.mDrawableWidthBottom);
7031            }
7032
7033            if (mHint != null) {
7034                int hintDes = -1;
7035                int hintWidth;
7036
7037                if (mHintLayout != null && mEllipsize == null) {
7038                    hintDes = desired(mHintLayout);
7039                }
7040
7041                if (hintDes < 0) {
7042                    hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mTextDir, mHintBoring);
7043                    if (hintBoring != null) {
7044                        mHintBoring = hintBoring;
7045                    }
7046                }
7047
7048                if (hintBoring == null || hintBoring == UNKNOWN_BORING) {
7049                    if (hintDes < 0) {
7050                        hintDes = (int) Math.ceil(Layout.getDesiredWidth(mHint, mTextPaint));
7051                    }
7052                    hintWidth = hintDes;
7053                } else {
7054                    hintWidth = hintBoring.width;
7055                }
7056
7057                if (hintWidth > width) {
7058                    width = hintWidth;
7059                }
7060            }
7061
7062            width += getCompoundPaddingLeft() + getCompoundPaddingRight();
7063
7064            if (mMaxWidthMode == EMS) {
7065                width = Math.min(width, mMaxWidth * getLineHeight());
7066            } else {
7067                width = Math.min(width, mMaxWidth);
7068            }
7069
7070            if (mMinWidthMode == EMS) {
7071                width = Math.max(width, mMinWidth * getLineHeight());
7072            } else {
7073                width = Math.max(width, mMinWidth);
7074            }
7075
7076            // Check against our minimum width
7077            width = Math.max(width, getSuggestedMinimumWidth());
7078
7079            if (widthMode == MeasureSpec.AT_MOST) {
7080                width = Math.min(widthSize, width);
7081            }
7082        }
7083
7084        int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight();
7085        int unpaddedWidth = want;
7086
7087        if (mHorizontallyScrolling) want = VERY_WIDE;
7088
7089        int hintWant = want;
7090        int hintWidth = (mHintLayout == null) ? hintWant : mHintLayout.getWidth();
7091
7092        if (mLayout == null) {
7093            makeNewLayout(want, hintWant, boring, hintBoring,
7094                          width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7095        } else {
7096            final boolean layoutChanged = (mLayout.getWidth() != want) ||
7097                    (hintWidth != hintWant) ||
7098                    (mLayout.getEllipsizedWidth() !=
7099                            width - getCompoundPaddingLeft() - getCompoundPaddingRight());
7100
7101            final boolean widthChanged = (mHint == null) &&
7102                    (mEllipsize == null) &&
7103                    (want > mLayout.getWidth()) &&
7104                    (mLayout instanceof BoringLayout || (fromexisting && des >= 0 && des <= want));
7105
7106            final boolean maximumChanged = (mMaxMode != mOldMaxMode) || (mMaximum != mOldMaximum);
7107
7108            if (layoutChanged || maximumChanged) {
7109                if (!maximumChanged && widthChanged) {
7110                    mLayout.increaseWidthTo(want);
7111                } else {
7112                    makeNewLayout(want, hintWant, boring, hintBoring,
7113                            width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false);
7114                }
7115            } else {
7116                // Nothing has changed
7117            }
7118        }
7119
7120        if (heightMode == MeasureSpec.EXACTLY) {
7121            // Parent has told us how big to be. So be it.
7122            height = heightSize;
7123            mDesiredHeightAtMeasure = -1;
7124        } else {
7125            int desired = getDesiredHeight();
7126
7127            height = desired;
7128            mDesiredHeightAtMeasure = desired;
7129
7130            if (heightMode == MeasureSpec.AT_MOST) {
7131                height = Math.min(desired, heightSize);
7132            }
7133        }
7134
7135        int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom();
7136        if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) {
7137            unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum));
7138        }
7139
7140        /*
7141         * We didn't let makeNewLayout() register to bring the cursor into view,
7142         * so do it here if there is any possibility that it is needed.
7143         */
7144        if (mMovement != null ||
7145            mLayout.getWidth() > unpaddedWidth ||
7146            mLayout.getHeight() > unpaddedHeight) {
7147            registerForPreDraw();
7148        } else {
7149            scrollTo(0, 0);
7150        }
7151
7152        setMeasuredDimension(width, height);
7153    }
7154
7155    private int getDesiredHeight() {
7156        return Math.max(
7157                getDesiredHeight(mLayout, true),
7158                getDesiredHeight(mHintLayout, mEllipsize != null));
7159    }
7160
7161    private int getDesiredHeight(Layout layout, boolean cap) {
7162        if (layout == null) {
7163            return 0;
7164        }
7165
7166        int linecount = layout.getLineCount();
7167        int pad = getCompoundPaddingTop() + getCompoundPaddingBottom();
7168        int desired = layout.getLineTop(linecount);
7169
7170        final Drawables dr = mDrawables;
7171        if (dr != null) {
7172            desired = Math.max(desired, dr.mDrawableHeightLeft);
7173            desired = Math.max(desired, dr.mDrawableHeightRight);
7174        }
7175
7176        desired += pad;
7177
7178        if (mMaxMode == LINES) {
7179            /*
7180             * Don't cap the hint to a certain number of lines.
7181             * (Do cap it, though, if we have a maximum pixel height.)
7182             */
7183            if (cap) {
7184                if (linecount > mMaximum) {
7185                    desired = layout.getLineTop(mMaximum);
7186
7187                    if (dr != null) {
7188                        desired = Math.max(desired, dr.mDrawableHeightLeft);
7189                        desired = Math.max(desired, dr.mDrawableHeightRight);
7190                    }
7191
7192                    desired += pad;
7193                    linecount = mMaximum;
7194                }
7195            }
7196        } else {
7197            desired = Math.min(desired, mMaximum);
7198        }
7199
7200        if (mMinMode == LINES) {
7201            if (linecount < mMinimum) {
7202                desired += getLineHeight() * (mMinimum - linecount);
7203            }
7204        } else {
7205            desired = Math.max(desired, mMinimum);
7206        }
7207
7208        // Check against our minimum height
7209        desired = Math.max(desired, getSuggestedMinimumHeight());
7210
7211        return desired;
7212    }
7213
7214    /**
7215     * Check whether a change to the existing text layout requires a
7216     * new view layout.
7217     */
7218    private void checkForResize() {
7219        boolean sizeChanged = false;
7220
7221        if (mLayout != null) {
7222            // Check if our width changed
7223            if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) {
7224                sizeChanged = true;
7225                invalidate();
7226            }
7227
7228            // Check if our height changed
7229            if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) {
7230                int desiredHeight = getDesiredHeight();
7231
7232                if (desiredHeight != this.getHeight()) {
7233                    sizeChanged = true;
7234                }
7235            } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) {
7236                if (mDesiredHeightAtMeasure >= 0) {
7237                    int desiredHeight = getDesiredHeight();
7238
7239                    if (desiredHeight != mDesiredHeightAtMeasure) {
7240                        sizeChanged = true;
7241                    }
7242                }
7243            }
7244        }
7245
7246        if (sizeChanged) {
7247            requestLayout();
7248            // caller will have already invalidated
7249        }
7250    }
7251
7252    /**
7253     * Check whether entirely new text requires a new view layout
7254     * or merely a new text layout.
7255     */
7256    private void checkForRelayout() {
7257        // If we have a fixed width, we can just swap in a new text layout
7258        // if the text height stays the same or if the view height is fixed.
7259
7260        if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT ||
7261                (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) &&
7262                (mHint == null || mHintLayout != null) &&
7263                (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) {
7264            // Static width, so try making a new text layout.
7265
7266            int oldht = mLayout.getHeight();
7267            int want = mLayout.getWidth();
7268            int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth();
7269
7270            /*
7271             * No need to bring the text into view, since the size is not
7272             * changing (unless we do the requestLayout(), in which case it
7273             * will happen at measure).
7274             */
7275            makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING,
7276                          mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(),
7277                          false);
7278
7279            if (mEllipsize != TextUtils.TruncateAt.MARQUEE) {
7280                // In a fixed-height view, so use our new text layout.
7281                if (mLayoutParams.height != LayoutParams.WRAP_CONTENT &&
7282                    mLayoutParams.height != LayoutParams.MATCH_PARENT) {
7283                    invalidate();
7284                    return;
7285                }
7286
7287                // Dynamic height, but height has stayed the same,
7288                // so use our new text layout.
7289                if (mLayout.getHeight() == oldht &&
7290                    (mHintLayout == null || mHintLayout.getHeight() == oldht)) {
7291                    invalidate();
7292                    return;
7293                }
7294            }
7295
7296            // We lose: the height has changed and we have a dynamic height.
7297            // Request a new view layout using our new text layout.
7298            requestLayout();
7299            invalidate();
7300        } else {
7301            // Dynamic width, so we have no choice but to request a new
7302            // view layout with a new text layout.
7303            nullLayouts();
7304            requestLayout();
7305            invalidate();
7306        }
7307    }
7308
7309    @Override
7310    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
7311        super.onLayout(changed, left, top, right, bottom);
7312        if (mDeferScroll >= 0) {
7313            int curs = mDeferScroll;
7314            mDeferScroll = -1;
7315            bringPointIntoView(Math.min(curs, mText.length()));
7316        }
7317    }
7318
7319    private boolean isShowingHint() {
7320        return TextUtils.isEmpty(mText) && !TextUtils.isEmpty(mHint);
7321    }
7322
7323    /**
7324     * Returns true if anything changed.
7325     */
7326    private boolean bringTextIntoView() {
7327        Layout layout = isShowingHint() ? mHintLayout : mLayout;
7328        int line = 0;
7329        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7330            line = layout.getLineCount() - 1;
7331        }
7332
7333        Layout.Alignment a = layout.getParagraphAlignment(line);
7334        int dir = layout.getParagraphDirection(line);
7335        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7336        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7337        int ht = layout.getHeight();
7338
7339        int scrollx, scrolly;
7340
7341        // Convert to left, center, or right alignment.
7342        if (a == Layout.Alignment.ALIGN_NORMAL) {
7343            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_LEFT :
7344                Layout.Alignment.ALIGN_RIGHT;
7345        } else if (a == Layout.Alignment.ALIGN_OPPOSITE){
7346            a = dir == Layout.DIR_LEFT_TO_RIGHT ? Layout.Alignment.ALIGN_RIGHT :
7347                Layout.Alignment.ALIGN_LEFT;
7348        }
7349
7350        if (a == Layout.Alignment.ALIGN_CENTER) {
7351            /*
7352             * Keep centered if possible, or, if it is too wide to fit,
7353             * keep leading edge in view.
7354             */
7355
7356            int left = (int) Math.floor(layout.getLineLeft(line));
7357            int right = (int) Math.ceil(layout.getLineRight(line));
7358
7359            if (right - left < hspace) {
7360                scrollx = (right + left) / 2 - hspace / 2;
7361            } else {
7362                if (dir < 0) {
7363                    scrollx = right - hspace;
7364                } else {
7365                    scrollx = left;
7366                }
7367            }
7368        } else if (a == Layout.Alignment.ALIGN_RIGHT) {
7369            int right = (int) Math.ceil(layout.getLineRight(line));
7370            scrollx = right - hspace;
7371        } else { // a == Layout.Alignment.ALIGN_LEFT (will also be the default)
7372            scrollx = (int) Math.floor(layout.getLineLeft(line));
7373        }
7374
7375        if (ht < vspace) {
7376            scrolly = 0;
7377        } else {
7378            if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
7379                scrolly = ht - vspace;
7380            } else {
7381                scrolly = 0;
7382            }
7383        }
7384
7385        if (scrollx != mScrollX || scrolly != mScrollY) {
7386            scrollTo(scrollx, scrolly);
7387            return true;
7388        } else {
7389            return false;
7390        }
7391    }
7392
7393    /**
7394     * Move the point, specified by the offset, into the view if it is needed.
7395     * This has to be called after layout. Returns true if anything changed.
7396     */
7397    public boolean bringPointIntoView(int offset) {
7398        if (isLayoutRequested()) {
7399            mDeferScroll = offset;
7400            return false;
7401        }
7402        boolean changed = false;
7403
7404        Layout layout = isShowingHint() ? mHintLayout: mLayout;
7405
7406        if (layout == null) return changed;
7407
7408        int line = layout.getLineForOffset(offset);
7409
7410        int grav;
7411
7412        switch (layout.getParagraphAlignment(line)) {
7413            case ALIGN_LEFT:
7414                grav = 1;
7415                break;
7416            case ALIGN_RIGHT:
7417                grav = -1;
7418                break;
7419            case ALIGN_NORMAL:
7420                grav = layout.getParagraphDirection(line);
7421                break;
7422            case ALIGN_OPPOSITE:
7423                grav = -layout.getParagraphDirection(line);
7424                break;
7425            case ALIGN_CENTER:
7426            default:
7427                grav = 0;
7428                break;
7429        }
7430
7431        // We only want to clamp the cursor to fit within the layout width
7432        // in left-to-right modes, because in a right to left alignment,
7433        // we want to scroll to keep the line-right on the screen, as other
7434        // lines are likely to have text flush with the right margin, which
7435        // we want to keep visible.
7436        // A better long-term solution would probably be to measure both
7437        // the full line and a blank-trimmed version, and, for example, use
7438        // the latter measurement for centering and right alignment, but for
7439        // the time being we only implement the cursor clamping in left to
7440        // right where it is most likely to be annoying.
7441        final boolean clamped = grav > 0;
7442        // FIXME: Is it okay to truncate this, or should we round?
7443        final int x = (int)layout.getPrimaryHorizontal(offset, clamped);
7444        final int top = layout.getLineTop(line);
7445        final int bottom = layout.getLineTop(line + 1);
7446
7447        int left = (int) Math.floor(layout.getLineLeft(line));
7448        int right = (int) Math.ceil(layout.getLineRight(line));
7449        int ht = layout.getHeight();
7450
7451        int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7452        int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7453        if (!mHorizontallyScrolling && right - left > hspace && right > x) {
7454            // If cursor has been clamped, make sure we don't scroll.
7455            right = Math.max(x, left + hspace);
7456        }
7457
7458        int hslack = (bottom - top) / 2;
7459        int vslack = hslack;
7460
7461        if (vslack > vspace / 4)
7462            vslack = vspace / 4;
7463        if (hslack > hspace / 4)
7464            hslack = hspace / 4;
7465
7466        int hs = mScrollX;
7467        int vs = mScrollY;
7468
7469        if (top - vs < vslack)
7470            vs = top - vslack;
7471        if (bottom - vs > vspace - vslack)
7472            vs = bottom - (vspace - vslack);
7473        if (ht - vs < vspace)
7474            vs = ht - vspace;
7475        if (0 - vs > 0)
7476            vs = 0;
7477
7478        if (grav != 0) {
7479            if (x - hs < hslack) {
7480                hs = x - hslack;
7481            }
7482            if (x - hs > hspace - hslack) {
7483                hs = x - (hspace - hslack);
7484            }
7485        }
7486
7487        if (grav < 0) {
7488            if (left - hs > 0)
7489                hs = left;
7490            if (right - hs < hspace)
7491                hs = right - hspace;
7492        } else if (grav > 0) {
7493            if (right - hs < hspace)
7494                hs = right - hspace;
7495            if (left - hs > 0)
7496                hs = left;
7497        } else /* grav == 0 */ {
7498            if (right - left <= hspace) {
7499                /*
7500                 * If the entire text fits, center it exactly.
7501                 */
7502                hs = left - (hspace - (right - left)) / 2;
7503            } else if (x > right - hslack) {
7504                /*
7505                 * If we are near the right edge, keep the right edge
7506                 * at the edge of the view.
7507                 */
7508                hs = right - hspace;
7509            } else if (x < left + hslack) {
7510                /*
7511                 * If we are near the left edge, keep the left edge
7512                 * at the edge of the view.
7513                 */
7514                hs = left;
7515            } else if (left > hs) {
7516                /*
7517                 * Is there whitespace visible at the left?  Fix it if so.
7518                 */
7519                hs = left;
7520            } else if (right < hs + hspace) {
7521                /*
7522                 * Is there whitespace visible at the right?  Fix it if so.
7523                 */
7524                hs = right - hspace;
7525            } else {
7526                /*
7527                 * Otherwise, float as needed.
7528                 */
7529                if (x - hs < hslack) {
7530                    hs = x - hslack;
7531                }
7532                if (x - hs > hspace - hslack) {
7533                    hs = x - (hspace - hslack);
7534                }
7535            }
7536        }
7537
7538        if (hs != mScrollX || vs != mScrollY) {
7539            if (mScroller == null) {
7540                scrollTo(hs, vs);
7541            } else {
7542                long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll;
7543                int dx = hs - mScrollX;
7544                int dy = vs - mScrollY;
7545
7546                if (duration > ANIMATED_SCROLL_GAP) {
7547                    mScroller.startScroll(mScrollX, mScrollY, dx, dy);
7548                    awakenScrollBars(mScroller.getDuration());
7549                    invalidate();
7550                } else {
7551                    if (!mScroller.isFinished()) {
7552                        mScroller.abortAnimation();
7553                    }
7554
7555                    scrollBy(dx, dy);
7556                }
7557
7558                mLastScroll = AnimationUtils.currentAnimationTimeMillis();
7559            }
7560
7561            changed = true;
7562        }
7563
7564        if (isFocused()) {
7565            // This offsets because getInterestingRect() is in terms of viewport coordinates, but
7566            // requestRectangleOnScreen() is in terms of content coordinates.
7567
7568            // The offsets here are to ensure the rectangle we are using is
7569            // within our view bounds, in case the cursor is on the far left
7570            // or right.  If it isn't withing the bounds, then this request
7571            // will be ignored.
7572            if (mTempRect == null) mTempRect = new Rect();
7573            mTempRect.set(x - 2, top, x + 2, bottom);
7574            getInterestingRect(mTempRect, line);
7575            mTempRect.offset(mScrollX, mScrollY);
7576
7577            if (requestRectangleOnScreen(mTempRect)) {
7578                changed = true;
7579            }
7580        }
7581
7582        return changed;
7583    }
7584
7585    /**
7586     * Move the cursor, if needed, so that it is at an offset that is visible
7587     * to the user.  This will not move the cursor if it represents more than
7588     * one character (a selection range).  This will only work if the
7589     * TextView contains spannable text; otherwise it will do nothing.
7590     *
7591     * @return True if the cursor was actually moved, false otherwise.
7592     */
7593    public boolean moveCursorToVisibleOffset() {
7594        if (!(mText instanceof Spannable)) {
7595            return false;
7596        }
7597        int start = getSelectionStart();
7598        int end = getSelectionEnd();
7599        if (start != end) {
7600            return false;
7601        }
7602
7603        // First: make sure the line is visible on screen:
7604
7605        int line = mLayout.getLineForOffset(start);
7606
7607        final int top = mLayout.getLineTop(line);
7608        final int bottom = mLayout.getLineTop(line + 1);
7609        final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom();
7610        int vslack = (bottom - top) / 2;
7611        if (vslack > vspace / 4)
7612            vslack = vspace / 4;
7613        final int vs = mScrollY;
7614
7615        if (top < (vs+vslack)) {
7616            line = mLayout.getLineForVertical(vs+vslack+(bottom-top));
7617        } else if (bottom > (vspace+vs-vslack)) {
7618            line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top));
7619        }
7620
7621        // Next: make sure the character is visible on screen:
7622
7623        final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight();
7624        final int hs = mScrollX;
7625        final int leftChar = mLayout.getOffsetForHorizontal(line, hs);
7626        final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs);
7627
7628        // line might contain bidirectional text
7629        final int lowChar = leftChar < rightChar ? leftChar : rightChar;
7630        final int highChar = leftChar > rightChar ? leftChar : rightChar;
7631
7632        int newStart = start;
7633        if (newStart < lowChar) {
7634            newStart = lowChar;
7635        } else if (newStart > highChar) {
7636            newStart = highChar;
7637        }
7638
7639        if (newStart != start) {
7640            Selection.setSelection((Spannable)mText, newStart);
7641            return true;
7642        }
7643
7644        return false;
7645    }
7646
7647    @Override
7648    public void computeScroll() {
7649        if (mScroller != null) {
7650            if (mScroller.computeScrollOffset()) {
7651                mScrollX = mScroller.getCurrX();
7652                mScrollY = mScroller.getCurrY();
7653                invalidateParentCaches();
7654                postInvalidate();  // So we draw again
7655            }
7656        }
7657    }
7658
7659    private void getInterestingRect(Rect r, int line) {
7660        convertFromViewportToContentCoordinates(r);
7661
7662        // Rectangle can can be expanded on first and last line to take
7663        // padding into account.
7664        // TODO Take left/right padding into account too?
7665        if (line == 0) r.top -= getExtendedPaddingTop();
7666        if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom();
7667    }
7668
7669    private void convertFromViewportToContentCoordinates(Rect r) {
7670        final int horizontalOffset = viewportToContentHorizontalOffset();
7671        r.left += horizontalOffset;
7672        r.right += horizontalOffset;
7673
7674        final int verticalOffset = viewportToContentVerticalOffset();
7675        r.top += verticalOffset;
7676        r.bottom += verticalOffset;
7677    }
7678
7679    int viewportToContentHorizontalOffset() {
7680        return getCompoundPaddingLeft() - mScrollX;
7681    }
7682
7683    int viewportToContentVerticalOffset() {
7684        int offset = getExtendedPaddingTop() - mScrollY;
7685        if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) {
7686            offset += getVerticalOffset(false);
7687        }
7688        return offset;
7689    }
7690
7691    @Override
7692    public void debug(int depth) {
7693        super.debug(depth);
7694
7695        String output = debugIndent(depth);
7696        output += "frame={" + mLeft + ", " + mTop + ", " + mRight
7697                + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
7698                + "} ";
7699
7700        if (mText != null) {
7701
7702            output += "mText=\"" + mText + "\" ";
7703            if (mLayout != null) {
7704                output += "mLayout width=" + mLayout.getWidth()
7705                        + " height=" + mLayout.getHeight();
7706            }
7707        } else {
7708            output += "mText=NULL";
7709        }
7710        Log.d(VIEW_LOG_TAG, output);
7711    }
7712
7713    /**
7714     * Convenience for {@link Selection#getSelectionStart}.
7715     */
7716    @ViewDebug.ExportedProperty(category = "text")
7717    public int getSelectionStart() {
7718        return Selection.getSelectionStart(getText());
7719    }
7720
7721    /**
7722     * Convenience for {@link Selection#getSelectionEnd}.
7723     */
7724    @ViewDebug.ExportedProperty(category = "text")
7725    public int getSelectionEnd() {
7726        return Selection.getSelectionEnd(getText());
7727    }
7728
7729    /**
7730     * Return true iff there is a selection inside this text view.
7731     */
7732    public boolean hasSelection() {
7733        final int selectionStart = getSelectionStart();
7734        final int selectionEnd = getSelectionEnd();
7735
7736        return selectionStart >= 0 && selectionStart != selectionEnd;
7737    }
7738
7739    String getSelectedText() {
7740        if (!hasSelection()) {
7741            return null;
7742        }
7743
7744        final int start = getSelectionStart();
7745        final int end = getSelectionEnd();
7746        return String.valueOf(
7747                start > end ? mText.subSequence(end, start) : mText.subSequence(start, end));
7748    }
7749
7750    /**
7751     * Sets the properties of this field (lines, horizontally scrolling,
7752     * transformation method) to be for a single-line input.
7753     *
7754     * @attr ref android.R.styleable#TextView_singleLine
7755     */
7756    public void setSingleLine() {
7757        setSingleLine(true);
7758    }
7759
7760    /**
7761     * Sets the properties of this field to transform input to ALL CAPS
7762     * display. This may use a "small caps" formatting if available.
7763     * This setting will be ignored if this field is editable or selectable.
7764     *
7765     * This call replaces the current transformation method. Disabling this
7766     * will not necessarily restore the previous behavior from before this
7767     * was enabled.
7768     *
7769     * @see #setTransformationMethod(TransformationMethod)
7770     * @attr ref android.R.styleable#TextView_textAllCaps
7771     */
7772    public void setAllCaps(boolean allCaps) {
7773        if (allCaps) {
7774            setTransformationMethod(new AllCapsTransformationMethod(getContext()));
7775        } else {
7776            setTransformationMethod(null);
7777        }
7778    }
7779
7780    /**
7781     * If true, sets the properties of this field (number of lines, horizontally scrolling,
7782     * transformation method) to be for a single-line input; if false, restores these to the default
7783     * conditions.
7784     *
7785     * Note that the default conditions are not necessarily those that were in effect prior this
7786     * method, and you may want to reset these properties to your custom values.
7787     *
7788     * @attr ref android.R.styleable#TextView_singleLine
7789     */
7790    @android.view.RemotableViewMethod
7791    public void setSingleLine(boolean singleLine) {
7792        // Could be used, but may break backward compatibility.
7793        // if (mSingleLine == singleLine) return;
7794        setInputTypeSingleLine(singleLine);
7795        applySingleLine(singleLine, true, true);
7796    }
7797
7798    /**
7799     * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType.
7800     * @param singleLine
7801     */
7802    private void setInputTypeSingleLine(boolean singleLine) {
7803        if (mEditor != null &&
7804                (mEditor.mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) {
7805            if (singleLine) {
7806                mEditor.mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7807            } else {
7808                mEditor.mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
7809            }
7810        }
7811    }
7812
7813    private void applySingleLine(boolean singleLine, boolean applyTransformation,
7814            boolean changeMaxLines) {
7815        mSingleLine = singleLine;
7816        if (singleLine) {
7817            setLines(1);
7818            setHorizontallyScrolling(true);
7819            if (applyTransformation) {
7820                setTransformationMethod(SingleLineTransformationMethod.getInstance());
7821            }
7822        } else {
7823            if (changeMaxLines) {
7824                setMaxLines(Integer.MAX_VALUE);
7825            }
7826            setHorizontallyScrolling(false);
7827            if (applyTransformation) {
7828                setTransformationMethod(null);
7829            }
7830        }
7831    }
7832
7833    /**
7834     * Causes words in the text that are longer than the view is wide
7835     * to be ellipsized instead of broken in the middle.  You may also
7836     * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling}
7837     * to constrain the text to a single line.  Use <code>null</code>
7838     * to turn off ellipsizing.
7839     *
7840     * If {@link #setMaxLines} has been used to set two or more lines,
7841     * only {@link android.text.TextUtils.TruncateAt#END} and
7842     * {@link android.text.TextUtils.TruncateAt#MARQUEE} are supported
7843     * (other ellipsizing types will not do anything).
7844     *
7845     * @attr ref android.R.styleable#TextView_ellipsize
7846     */
7847    public void setEllipsize(TextUtils.TruncateAt where) {
7848        // TruncateAt is an enum. != comparison is ok between these singleton objects.
7849        if (mEllipsize != where) {
7850            mEllipsize = where;
7851
7852            if (mLayout != null) {
7853                nullLayouts();
7854                requestLayout();
7855                invalidate();
7856            }
7857        }
7858    }
7859
7860    /**
7861     * Sets how many times to repeat the marquee animation. Only applied if the
7862     * TextView has marquee enabled. Set to -1 to repeat indefinitely.
7863     *
7864     * @see #getMarqueeRepeatLimit()
7865     *
7866     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7867     */
7868    public void setMarqueeRepeatLimit(int marqueeLimit) {
7869        mMarqueeRepeatLimit = marqueeLimit;
7870    }
7871
7872    /**
7873     * Gets the number of times the marquee animation is repeated. Only meaningful if the
7874     * TextView has marquee enabled.
7875     *
7876     * @return the number of times the marquee animation is repeated. -1 if the animation
7877     * repeats indefinitely
7878     *
7879     * @see #setMarqueeRepeatLimit(int)
7880     *
7881     * @attr ref android.R.styleable#TextView_marqueeRepeatLimit
7882     */
7883    public int getMarqueeRepeatLimit() {
7884        return mMarqueeRepeatLimit;
7885    }
7886
7887    /**
7888     * Returns where, if anywhere, words that are longer than the view
7889     * is wide should be ellipsized.
7890     */
7891    @ViewDebug.ExportedProperty
7892    public TextUtils.TruncateAt getEllipsize() {
7893        return mEllipsize;
7894    }
7895
7896    /**
7897     * Set the TextView so that when it takes focus, all the text is
7898     * selected.
7899     *
7900     * @attr ref android.R.styleable#TextView_selectAllOnFocus
7901     */
7902    @android.view.RemotableViewMethod
7903    public void setSelectAllOnFocus(boolean selectAllOnFocus) {
7904        createEditorIfNeeded();
7905        mEditor.mSelectAllOnFocus = selectAllOnFocus;
7906
7907        if (selectAllOnFocus && !(mText instanceof Spannable)) {
7908            setText(mText, BufferType.SPANNABLE);
7909        }
7910    }
7911
7912    /**
7913     * Set whether the cursor is visible. The default is true. Note that this property only
7914     * makes sense for editable TextView.
7915     *
7916     * @see #isCursorVisible()
7917     *
7918     * @attr ref android.R.styleable#TextView_cursorVisible
7919     */
7920    @android.view.RemotableViewMethod
7921    public void setCursorVisible(boolean visible) {
7922        if (visible && mEditor == null) return; // visible is the default value with no edit data
7923        createEditorIfNeeded();
7924        if (mEditor.mCursorVisible != visible) {
7925            mEditor.mCursorVisible = visible;
7926            invalidate();
7927
7928            mEditor.makeBlink();
7929
7930            // InsertionPointCursorController depends on mCursorVisible
7931            mEditor.prepareCursorControllers();
7932        }
7933    }
7934
7935    /**
7936     * @return whether or not the cursor is visible (assuming this TextView is editable)
7937     *
7938     * @see #setCursorVisible(boolean)
7939     *
7940     * @attr ref android.R.styleable#TextView_cursorVisible
7941     */
7942    public boolean isCursorVisible() {
7943        // true is the default value
7944        return mEditor == null ? true : mEditor.mCursorVisible;
7945    }
7946
7947    private boolean canMarquee() {
7948        int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight());
7949        return width > 0 && (mLayout.getLineWidth(0) > width ||
7950                (mMarqueeFadeMode != MARQUEE_FADE_NORMAL && mSavedMarqueeModeLayout != null &&
7951                        mSavedMarqueeModeLayout.getLineWidth(0) > width));
7952    }
7953
7954    private void startMarquee() {
7955        // Do not ellipsize EditText
7956        if (getKeyListener() != null) return;
7957
7958        if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) {
7959            return;
7960        }
7961
7962        if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) &&
7963                getLineCount() == 1 && canMarquee()) {
7964
7965            if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
7966                mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_FADE;
7967                final Layout tmp = mLayout;
7968                mLayout = mSavedMarqueeModeLayout;
7969                mSavedMarqueeModeLayout = tmp;
7970                setHorizontalFadingEdgeEnabled(true);
7971                requestLayout();
7972                invalidate();
7973            }
7974
7975            if (mMarquee == null) mMarquee = new Marquee(this);
7976            mMarquee.start(mMarqueeRepeatLimit);
7977        }
7978    }
7979
7980    private void stopMarquee() {
7981        if (mMarquee != null && !mMarquee.isStopped()) {
7982            mMarquee.stop();
7983        }
7984
7985        if (mMarqueeFadeMode == MARQUEE_FADE_SWITCH_SHOW_FADE) {
7986            mMarqueeFadeMode = MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS;
7987            final Layout tmp = mSavedMarqueeModeLayout;
7988            mSavedMarqueeModeLayout = mLayout;
7989            mLayout = tmp;
7990            setHorizontalFadingEdgeEnabled(false);
7991            requestLayout();
7992            invalidate();
7993        }
7994    }
7995
7996    private void startStopMarquee(boolean start) {
7997        if (mEllipsize == TextUtils.TruncateAt.MARQUEE) {
7998            if (start) {
7999                startMarquee();
8000            } else {
8001                stopMarquee();
8002            }
8003        }
8004    }
8005
8006    /**
8007     * This method is called when the text is changed, in case any subclasses
8008     * would like to know.
8009     *
8010     * Within <code>text</code>, the <code>lengthAfter</code> characters
8011     * beginning at <code>start</code> have just replaced old text that had
8012     * length <code>lengthBefore</code>. It is an error to attempt to make
8013     * changes to <code>text</code> from this callback.
8014     *
8015     * @param text The text the TextView is displaying
8016     * @param start The offset of the start of the range of the text that was
8017     * modified
8018     * @param lengthBefore The length of the former text that has been replaced
8019     * @param lengthAfter The length of the replacement modified text
8020     */
8021    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
8022        // intentionally empty, template pattern method can be overridden by subclasses
8023    }
8024
8025    /**
8026     * This method is called when the selection has changed, in case any
8027     * subclasses would like to know.
8028     *
8029     * @param selStart The new selection start location.
8030     * @param selEnd The new selection end location.
8031     */
8032    protected void onSelectionChanged(int selStart, int selEnd) {
8033        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
8034    }
8035
8036    /**
8037     * Adds a TextWatcher to the list of those whose methods are called
8038     * whenever this TextView's text changes.
8039     * <p>
8040     * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously
8041     * not called after {@link #setText} calls.  Now, doing {@link #setText}
8042     * if there are any text changed listeners forces the buffer type to
8043     * Editable if it would not otherwise be and does call this method.
8044     */
8045    public void addTextChangedListener(TextWatcher watcher) {
8046        if (mListeners == null) {
8047            mListeners = new ArrayList<TextWatcher>();
8048        }
8049
8050        mListeners.add(watcher);
8051    }
8052
8053    /**
8054     * Removes the specified TextWatcher from the list of those whose
8055     * methods are called
8056     * whenever this TextView's text changes.
8057     */
8058    public void removeTextChangedListener(TextWatcher watcher) {
8059        if (mListeners != null) {
8060            int i = mListeners.indexOf(watcher);
8061
8062            if (i >= 0) {
8063                mListeners.remove(i);
8064            }
8065        }
8066    }
8067
8068    private void sendBeforeTextChanged(CharSequence text, int start, int before, int after) {
8069        if (mListeners != null) {
8070            final ArrayList<TextWatcher> list = mListeners;
8071            final int count = list.size();
8072            for (int i = 0; i < count; i++) {
8073                list.get(i).beforeTextChanged(text, start, before, after);
8074            }
8075        }
8076
8077        // The spans that are inside or intersect the modified region no longer make sense
8078        removeIntersectingNonAdjacentSpans(start, start + before, SpellCheckSpan.class);
8079        removeIntersectingNonAdjacentSpans(start, start + before, SuggestionSpan.class);
8080    }
8081
8082    // Removes all spans that are inside or actually overlap the start..end range
8083    private <T> void removeIntersectingNonAdjacentSpans(int start, int end, Class<T> type) {
8084        if (!(mText instanceof Editable)) return;
8085        Editable text = (Editable) mText;
8086
8087        T[] spans = text.getSpans(start, end, type);
8088        final int length = spans.length;
8089        for (int i = 0; i < length; i++) {
8090            final int spanStart = text.getSpanStart(spans[i]);
8091            final int spanEnd = text.getSpanEnd(spans[i]);
8092            if (spanEnd == start || spanStart == end) break;
8093            text.removeSpan(spans[i]);
8094        }
8095    }
8096
8097    void removeAdjacentSuggestionSpans(final int pos) {
8098        if (!(mText instanceof Editable)) return;
8099        final Editable text = (Editable) mText;
8100
8101        final SuggestionSpan[] spans = text.getSpans(pos, pos, SuggestionSpan.class);
8102        final int length = spans.length;
8103        for (int i = 0; i < length; i++) {
8104            final int spanStart = text.getSpanStart(spans[i]);
8105            final int spanEnd = text.getSpanEnd(spans[i]);
8106            if (spanEnd == pos || spanStart == pos) {
8107                if (SpellChecker.haveWordBoundariesChanged(text, pos, pos, spanStart, spanEnd)) {
8108                    text.removeSpan(spans[i]);
8109                }
8110            }
8111        }
8112    }
8113
8114    /**
8115     * Not private so it can be called from an inner class without going
8116     * through a thunk.
8117     */
8118    void sendOnTextChanged(CharSequence text, int start, int before, int after) {
8119        if (mListeners != null) {
8120            final ArrayList<TextWatcher> list = mListeners;
8121            final int count = list.size();
8122            for (int i = 0; i < count; i++) {
8123                list.get(i).onTextChanged(text, start, before, after);
8124            }
8125        }
8126
8127        if (mEditor != null) mEditor.sendOnTextChanged(start, after);
8128    }
8129
8130    /**
8131     * Not private so it can be called from an inner class without going
8132     * through a thunk.
8133     */
8134    void sendAfterTextChanged(Editable text) {
8135        if (mListeners != null) {
8136            final ArrayList<TextWatcher> list = mListeners;
8137            final int count = list.size();
8138            for (int i = 0; i < count; i++) {
8139                list.get(i).afterTextChanged(text);
8140            }
8141        }
8142        hideErrorIfUnchanged();
8143    }
8144
8145    void updateAfterEdit() {
8146        invalidate();
8147        int curs = getSelectionStart();
8148
8149        if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
8150            registerForPreDraw();
8151        }
8152
8153        checkForResize();
8154
8155        if (curs >= 0) {
8156            mHighlightPathBogus = true;
8157            if (mEditor != null) mEditor.makeBlink();
8158            bringPointIntoView(curs);
8159        }
8160    }
8161
8162    /**
8163     * Not private so it can be called from an inner class without going
8164     * through a thunk.
8165     */
8166    void handleTextChanged(CharSequence buffer, int start, int before, int after) {
8167        sLastCutCopyOrTextChangedTime = 0;
8168
8169        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8170        if (ims == null || ims.mBatchEditNesting == 0) {
8171            updateAfterEdit();
8172        }
8173        if (ims != null) {
8174            ims.mContentChanged = true;
8175            if (ims.mChangedStart < 0) {
8176                ims.mChangedStart = start;
8177                ims.mChangedEnd = start+before;
8178            } else {
8179                ims.mChangedStart = Math.min(ims.mChangedStart, start);
8180                ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta);
8181            }
8182            ims.mChangedDelta += after-before;
8183        }
8184        resetErrorChangedFlag();
8185        sendOnTextChanged(buffer, start, before, after);
8186        onTextChanged(buffer, start, before, after);
8187    }
8188
8189    /**
8190     * Not private so it can be called from an inner class without going
8191     * through a thunk.
8192     */
8193    void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) {
8194        // XXX Make the start and end move together if this ends up
8195        // spending too much time invalidating.
8196
8197        boolean selChanged = false;
8198        int newSelStart=-1, newSelEnd=-1;
8199
8200        final Editor.InputMethodState ims = mEditor == null ? null : mEditor.mInputMethodState;
8201
8202        if (what == Selection.SELECTION_END) {
8203            selChanged = true;
8204            newSelEnd = newStart;
8205
8206            if (oldStart >= 0 || newStart >= 0) {
8207                invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart);
8208                checkForResize();
8209                registerForPreDraw();
8210                if (mEditor != null) mEditor.makeBlink();
8211            }
8212        }
8213
8214        if (what == Selection.SELECTION_START) {
8215            selChanged = true;
8216            newSelStart = newStart;
8217
8218            if (oldStart >= 0 || newStart >= 0) {
8219                int end = Selection.getSelectionEnd(buf);
8220                invalidateCursor(end, oldStart, newStart);
8221            }
8222        }
8223
8224        if (selChanged) {
8225            mHighlightPathBogus = true;
8226            if (mEditor != null && !isFocused()) mEditor.mSelectionMoved = true;
8227
8228            if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) {
8229                if (newSelStart < 0) {
8230                    newSelStart = Selection.getSelectionStart(buf);
8231                }
8232                if (newSelEnd < 0) {
8233                    newSelEnd = Selection.getSelectionEnd(buf);
8234                }
8235                onSelectionChanged(newSelStart, newSelEnd);
8236            }
8237        }
8238
8239        if (what instanceof UpdateAppearance || what instanceof ParagraphStyle ||
8240                what instanceof CharacterStyle) {
8241            if (ims == null || ims.mBatchEditNesting == 0) {
8242                invalidate();
8243                mHighlightPathBogus = true;
8244                checkForResize();
8245            } else {
8246                ims.mContentChanged = true;
8247            }
8248            if (mEditor != null) {
8249                if (oldStart >= 0) mEditor.invalidateTextDisplayList(mLayout, oldStart, oldEnd);
8250                if (newStart >= 0) mEditor.invalidateTextDisplayList(mLayout, newStart, newEnd);
8251            }
8252        }
8253
8254        if (MetaKeyKeyListener.isMetaTracker(buf, what)) {
8255            mHighlightPathBogus = true;
8256            if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) {
8257                ims.mSelectionModeChanged = true;
8258            }
8259
8260            if (Selection.getSelectionStart(buf) >= 0) {
8261                if (ims == null || ims.mBatchEditNesting == 0) {
8262                    invalidateCursor();
8263                } else {
8264                    ims.mCursorChanged = true;
8265                }
8266            }
8267        }
8268
8269        if (what instanceof ParcelableSpan) {
8270            // If this is a span that can be sent to a remote process,
8271            // the current extract editor would be interested in it.
8272            if (ims != null && ims.mExtractedTextRequest != null) {
8273                if (ims.mBatchEditNesting != 0) {
8274                    if (oldStart >= 0) {
8275                        if (ims.mChangedStart > oldStart) {
8276                            ims.mChangedStart = oldStart;
8277                        }
8278                        if (ims.mChangedStart > oldEnd) {
8279                            ims.mChangedStart = oldEnd;
8280                        }
8281                    }
8282                    if (newStart >= 0) {
8283                        if (ims.mChangedStart > newStart) {
8284                            ims.mChangedStart = newStart;
8285                        }
8286                        if (ims.mChangedStart > newEnd) {
8287                            ims.mChangedStart = newEnd;
8288                        }
8289                    }
8290                } else {
8291                    if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: "
8292                            + oldStart + "-" + oldEnd + ","
8293                            + newStart + "-" + newEnd + " " + what);
8294                    ims.mContentChanged = true;
8295                }
8296            }
8297        }
8298
8299        if (mEditor != null && mEditor.mSpellChecker != null && newStart < 0 &&
8300                what instanceof SpellCheckSpan) {
8301            mEditor.mSpellChecker.onSpellCheckSpanRemoved((SpellCheckSpan) what);
8302        }
8303    }
8304
8305    /**
8306     * @hide
8307     */
8308    @Override
8309    public void dispatchFinishTemporaryDetach() {
8310        mDispatchTemporaryDetach = true;
8311        super.dispatchFinishTemporaryDetach();
8312        mDispatchTemporaryDetach = false;
8313    }
8314
8315    @Override
8316    public void onStartTemporaryDetach() {
8317        super.onStartTemporaryDetach();
8318        // Only track when onStartTemporaryDetach() is called directly,
8319        // usually because this instance is an editable field in a list
8320        if (!mDispatchTemporaryDetach) mTemporaryDetach = true;
8321
8322        // Tell the editor that we are temporarily detached. It can use this to preserve
8323        // selection state as needed.
8324        if (mEditor != null) mEditor.mTemporaryDetach = true;
8325    }
8326
8327    @Override
8328    public void onFinishTemporaryDetach() {
8329        super.onFinishTemporaryDetach();
8330        // Only track when onStartTemporaryDetach() is called directly,
8331        // usually because this instance is an editable field in a list
8332        if (!mDispatchTemporaryDetach) mTemporaryDetach = false;
8333        if (mEditor != null) mEditor.mTemporaryDetach = false;
8334    }
8335
8336    @Override
8337    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
8338        if (mTemporaryDetach) {
8339            // If we are temporarily in the detach state, then do nothing.
8340            super.onFocusChanged(focused, direction, previouslyFocusedRect);
8341            return;
8342        }
8343
8344        if (mEditor != null) mEditor.onFocusChanged(focused, direction);
8345
8346        if (focused) {
8347            if (mText instanceof Spannable) {
8348                Spannable sp = (Spannable) mText;
8349                MetaKeyKeyListener.resetMetaState(sp);
8350            }
8351        }
8352
8353        startStopMarquee(focused);
8354
8355        if (mTransformation != null) {
8356            mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect);
8357        }
8358
8359        super.onFocusChanged(focused, direction, previouslyFocusedRect);
8360    }
8361
8362    @Override
8363    public void onWindowFocusChanged(boolean hasWindowFocus) {
8364        super.onWindowFocusChanged(hasWindowFocus);
8365
8366        if (mEditor != null) mEditor.onWindowFocusChanged(hasWindowFocus);
8367
8368        startStopMarquee(hasWindowFocus);
8369    }
8370
8371    @Override
8372    protected void onVisibilityChanged(View changedView, int visibility) {
8373        super.onVisibilityChanged(changedView, visibility);
8374        if (mEditor != null && visibility != VISIBLE) {
8375            mEditor.hideCursorAndSpanControllers();
8376            stopTextActionMode();
8377        }
8378    }
8379
8380    /**
8381     * Use {@link BaseInputConnection#removeComposingSpans
8382     * BaseInputConnection.removeComposingSpans()} to remove any IME composing
8383     * state from this text view.
8384     */
8385    public void clearComposingText() {
8386        if (mText instanceof Spannable) {
8387            BaseInputConnection.removeComposingSpans((Spannable)mText);
8388        }
8389    }
8390
8391    @Override
8392    public void setSelected(boolean selected) {
8393        boolean wasSelected = isSelected();
8394
8395        super.setSelected(selected);
8396
8397        if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) {
8398            if (selected) {
8399                startMarquee();
8400            } else {
8401                stopMarquee();
8402            }
8403        }
8404    }
8405
8406    @Override
8407    public boolean onTouchEvent(MotionEvent event) {
8408        final int action = event.getActionMasked();
8409
8410        if (mEditor != null && action == MotionEvent.ACTION_DOWN) {
8411            final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE);
8412            // Detect double tap and triple click and inform the Editor.
8413            if ((mFirstTouch || (mEditor.mDoubleTap && isMouse))
8414                        && (SystemClock.uptimeMillis() - mLastTouchUpTime) <=
8415                                ViewConfiguration.getDoubleTapTimeout()) {
8416                if (mFirstTouch) {
8417                    mEditor.mTripleClick = false;
8418                    mEditor.mDoubleTap = true;
8419                    mFirstTouch = false;
8420                } else {
8421                    mEditor.mTripleClick = true;
8422                    mEditor.mDoubleTap = false;
8423                    mFirstTouch = false;
8424                }
8425            } else {
8426                mEditor.mTripleClick = false;
8427                mEditor.mDoubleTap = false;
8428                mFirstTouch = true;
8429            }
8430        }
8431
8432        if (action == MotionEvent.ACTION_UP) {
8433            mLastTouchUpTime = SystemClock.uptimeMillis();
8434        }
8435
8436        if (mEditor != null) {
8437            mEditor.onTouchEvent(event);
8438
8439            if (mEditor.mSelectionModifierCursorController != null &&
8440                    mEditor.mSelectionModifierCursorController.isDragAcceleratorActive()) {
8441                return true;
8442            }
8443        }
8444
8445        final boolean superResult = super.onTouchEvent(event);
8446
8447        /*
8448         * Don't handle the release after a long press, because it will move the selection away from
8449         * whatever the menu action was trying to affect. If the long press should have triggered an
8450         * insertion action mode, we can now actually show it.
8451         */
8452        if (mEditor != null && mEditor.mDiscardNextActionUp && action == MotionEvent.ACTION_UP) {
8453            mEditor.mDiscardNextActionUp = false;
8454
8455            if (mEditor.mIsInsertionActionModeStartPending) {
8456                mEditor.startInsertionActionMode();
8457                mEditor.mIsInsertionActionModeStartPending = false;
8458            }
8459            return superResult;
8460        }
8461
8462        final boolean touchIsFinished = (action == MotionEvent.ACTION_UP) &&
8463                (mEditor == null || !mEditor.mIgnoreActionUpEvent) && isFocused();
8464
8465         if ((mMovement != null || onCheckIsTextEditor()) && isEnabled()
8466                && mText instanceof Spannable && mLayout != null) {
8467            boolean handled = false;
8468
8469            if (mMovement != null) {
8470                handled |= mMovement.onTouchEvent(this, (Spannable) mText, event);
8471            }
8472
8473            final boolean textIsSelectable = isTextSelectable();
8474            if (touchIsFinished && mLinksClickable && mAutoLinkMask != 0 && textIsSelectable) {
8475                // The LinkMovementMethod which should handle taps on links has not been installed
8476                // on non editable text that support text selection.
8477                // We reproduce its behavior here to open links for these.
8478                ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(),
8479                        getSelectionEnd(), ClickableSpan.class);
8480
8481                if (links.length > 0) {
8482                    links[0].onClick(this);
8483                    handled = true;
8484                }
8485            }
8486
8487            if (touchIsFinished && (isTextEditable() || textIsSelectable)) {
8488                // Show the IME, except when selecting in read-only text.
8489                final InputMethodManager imm = InputMethodManager.peekInstance();
8490                viewClicked(imm);
8491                if (!textIsSelectable && mEditor.mShowSoftInputOnFocus) {
8492                    handled |= imm != null && imm.showSoftInput(this, 0);
8493                }
8494
8495                // The above condition ensures that the mEditor is not null
8496                mEditor.onTouchUpEvent(event);
8497
8498                handled = true;
8499            }
8500
8501            if (handled) {
8502                return true;
8503            }
8504        }
8505
8506        return superResult;
8507    }
8508
8509    @Override
8510    public boolean onGenericMotionEvent(MotionEvent event) {
8511        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8512            try {
8513                if (mMovement.onGenericMotionEvent(this, (Spannable) mText, event)) {
8514                    return true;
8515                }
8516            } catch (AbstractMethodError ex) {
8517                // onGenericMotionEvent was added to the MovementMethod interface in API 12.
8518                // Ignore its absence in case third party applications implemented the
8519                // interface directly.
8520            }
8521        }
8522        return super.onGenericMotionEvent(event);
8523    }
8524
8525    /**
8526     * @return True iff this TextView contains a text that can be edited, or if this is
8527     * a selectable TextView.
8528     */
8529    boolean isTextEditable() {
8530        return mText instanceof Editable && onCheckIsTextEditor() && isEnabled();
8531    }
8532
8533    /**
8534     * Returns true, only while processing a touch gesture, if the initial
8535     * touch down event caused focus to move to the text view and as a result
8536     * its selection changed.  Only valid while processing the touch gesture
8537     * of interest, in an editable text view.
8538     */
8539    public boolean didTouchFocusSelect() {
8540        return mEditor != null && mEditor.mTouchFocusSelected;
8541    }
8542
8543    @Override
8544    public void cancelLongPress() {
8545        super.cancelLongPress();
8546        if (mEditor != null) mEditor.mIgnoreActionUpEvent = true;
8547    }
8548
8549    @Override
8550    public boolean onTrackballEvent(MotionEvent event) {
8551        if (mMovement != null && mText instanceof Spannable && mLayout != null) {
8552            if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) {
8553                return true;
8554            }
8555        }
8556
8557        return super.onTrackballEvent(event);
8558    }
8559
8560    public void setScroller(Scroller s) {
8561        mScroller = s;
8562    }
8563
8564    @Override
8565    protected float getLeftFadingEdgeStrength() {
8566        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8567                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8568            if (mMarquee != null && !mMarquee.isStopped()) {
8569                final Marquee marquee = mMarquee;
8570                if (marquee.shouldDrawLeftFade()) {
8571                    final float scroll = marquee.getScroll();
8572                    return scroll / getHorizontalFadingEdgeLength();
8573                } else {
8574                    return 0.0f;
8575                }
8576            } else if (getLineCount() == 1) {
8577                final int layoutDirection = getLayoutDirection();
8578                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8579                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8580                    case Gravity.LEFT:
8581                        return 0.0f;
8582                    case Gravity.RIGHT:
8583                        return (mLayout.getLineRight(0) - (mRight - mLeft) -
8584                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8585                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8586                    case Gravity.CENTER_HORIZONTAL:
8587                    case Gravity.FILL_HORIZONTAL:
8588                        final int textDirection = mLayout.getParagraphDirection(0);
8589                        if (textDirection == Layout.DIR_LEFT_TO_RIGHT) {
8590                            return 0.0f;
8591                        } else {
8592                            return (mLayout.getLineRight(0) - (mRight - mLeft) -
8593                                getCompoundPaddingLeft() - getCompoundPaddingRight() -
8594                                mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength();
8595                        }
8596                }
8597            }
8598        }
8599        return super.getLeftFadingEdgeStrength();
8600    }
8601
8602    @Override
8603    protected float getRightFadingEdgeStrength() {
8604        if (mEllipsize == TextUtils.TruncateAt.MARQUEE &&
8605                mMarqueeFadeMode != MARQUEE_FADE_SWITCH_SHOW_ELLIPSIS) {
8606            if (mMarquee != null && !mMarquee.isStopped()) {
8607                final Marquee marquee = mMarquee;
8608                final float maxFadeScroll = marquee.getMaxFadeScroll();
8609                final float scroll = marquee.getScroll();
8610                return (maxFadeScroll - scroll) / getHorizontalFadingEdgeLength();
8611            } else if (getLineCount() == 1) {
8612                final int layoutDirection = getLayoutDirection();
8613                final int absoluteGravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
8614                switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
8615                    case Gravity.LEFT:
8616                        final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() -
8617                                getCompoundPaddingRight();
8618                        final float lineWidth = mLayout.getLineWidth(0);
8619                        return (lineWidth - textWidth) / getHorizontalFadingEdgeLength();
8620                    case Gravity.RIGHT:
8621                        return 0.0f;
8622                    case Gravity.CENTER_HORIZONTAL:
8623                    case Gravity.FILL_HORIZONTAL:
8624                        final int textDirection = mLayout.getParagraphDirection(0);
8625                        if (textDirection == Layout.DIR_RIGHT_TO_LEFT) {
8626                            return 0.0f;
8627                        } else {
8628                            return (mLayout.getLineWidth(0) - ((mRight - mLeft) -
8629                                getCompoundPaddingLeft() - getCompoundPaddingRight())) /
8630                                getHorizontalFadingEdgeLength();
8631                        }
8632                }
8633            }
8634        }
8635        return super.getRightFadingEdgeStrength();
8636    }
8637
8638    @Override
8639    protected int computeHorizontalScrollRange() {
8640        if (mLayout != null) {
8641            return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ?
8642                    (int) mLayout.getLineWidth(0) : mLayout.getWidth();
8643        }
8644
8645        return super.computeHorizontalScrollRange();
8646    }
8647
8648    @Override
8649    protected int computeVerticalScrollRange() {
8650        if (mLayout != null)
8651            return mLayout.getHeight();
8652
8653        return super.computeVerticalScrollRange();
8654    }
8655
8656    @Override
8657    protected int computeVerticalScrollExtent() {
8658        return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
8659    }
8660
8661    @Override
8662    public void findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags) {
8663        super.findViewsWithText(outViews, searched, flags);
8664        if (!outViews.contains(this) && (flags & FIND_VIEWS_WITH_TEXT) != 0
8665                && !TextUtils.isEmpty(searched) && !TextUtils.isEmpty(mText)) {
8666            String searchedLowerCase = searched.toString().toLowerCase();
8667            String textLowerCase = mText.toString().toLowerCase();
8668            if (textLowerCase.contains(searchedLowerCase)) {
8669                outViews.add(this);
8670            }
8671        }
8672    }
8673
8674    public enum BufferType {
8675        NORMAL, SPANNABLE, EDITABLE,
8676    }
8677
8678    /**
8679     * Returns the TextView_textColor attribute from the TypedArray, if set, or
8680     * the TextAppearance_textColor from the TextView_textAppearance attribute,
8681     * if TextView_textColor was not set directly.
8682     *
8683     * @removed
8684     */
8685    public static ColorStateList getTextColors(Context context, TypedArray attrs) {
8686        if (attrs == null) {
8687            // Preserve behavior prior to removal of this API.
8688            throw new NullPointerException();
8689        }
8690
8691        // It's not safe to use this method from apps. The parameter 'attrs'
8692        // must have been obtained using the TextView filter array which is not
8693        // available to the SDK. As such, we grab a default TypedArray with the
8694        // right filter instead here.
8695        final TypedArray a = context.obtainStyledAttributes(R.styleable.TextView);
8696        ColorStateList colors = a.getColorStateList(R.styleable.TextView_textColor);
8697        if (colors == null) {
8698            final int ap = a.getResourceId(R.styleable.TextView_textAppearance, 0);
8699            if (ap != 0) {
8700                final TypedArray appearance = context.obtainStyledAttributes(
8701                        ap, R.styleable.TextAppearance);
8702                colors = appearance.getColorStateList(R.styleable.TextAppearance_textColor);
8703                appearance.recycle();
8704            }
8705        }
8706        a.recycle();
8707
8708        return colors;
8709    }
8710
8711    /**
8712     * Returns the default color from the TextView_textColor attribute from the
8713     * AttributeSet, if set, or the default color from the
8714     * TextAppearance_textColor from the TextView_textAppearance attribute, if
8715     * TextView_textColor was not set directly.
8716     *
8717     * @removed
8718     */
8719    public static int getTextColor(Context context, TypedArray attrs, int def) {
8720        final ColorStateList colors = getTextColors(context, attrs);
8721        if (colors == null) {
8722            return def;
8723        } else {
8724            return colors.getDefaultColor();
8725        }
8726    }
8727
8728    @Override
8729    public boolean onKeyShortcut(int keyCode, KeyEvent event) {
8730        if (event.hasModifiers(KeyEvent.META_CTRL_ON)) {
8731            // Handle Ctrl-only shortcuts.
8732            switch (keyCode) {
8733            case KeyEvent.KEYCODE_A:
8734                if (canSelectText()) {
8735                    return onTextContextMenuItem(ID_SELECT_ALL);
8736                }
8737                break;
8738            case KeyEvent.KEYCODE_Z:
8739                if (canUndo()) {
8740                    return onTextContextMenuItem(ID_UNDO);
8741                }
8742                break;
8743            case KeyEvent.KEYCODE_X:
8744                if (canCut()) {
8745                    return onTextContextMenuItem(ID_CUT);
8746                }
8747                break;
8748            case KeyEvent.KEYCODE_C:
8749                if (canCopy()) {
8750                    return onTextContextMenuItem(ID_COPY);
8751                }
8752                break;
8753            case KeyEvent.KEYCODE_V:
8754                if (canPaste()) {
8755                    return onTextContextMenuItem(ID_PASTE);
8756                }
8757                break;
8758            }
8759        } else if (event.hasModifiers(KeyEvent.META_CTRL_ON | KeyEvent.META_SHIFT_ON)) {
8760            // Handle Ctrl-Shift shortcuts.
8761            switch (keyCode) {
8762                case KeyEvent.KEYCODE_Z:
8763                    if (canRedo()) {
8764                        return onTextContextMenuItem(ID_REDO);
8765                    }
8766                    break;
8767                case KeyEvent.KEYCODE_V:
8768                    if (canPaste()) {
8769                        return onTextContextMenuItem(ID_PASTE_AS_PLAIN_TEXT);
8770                    }
8771            }
8772        }
8773        return super.onKeyShortcut(keyCode, event);
8774    }
8775
8776    /**
8777     * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the
8778     * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have
8779     * a selection controller (see {@link Editor#prepareCursorControllers()}), but this is not
8780     * sufficient.
8781     */
8782    boolean canSelectText() {
8783        return mText.length() != 0 && mEditor != null && mEditor.hasSelectionController();
8784    }
8785
8786    /**
8787     * Test based on the <i>intrinsic</i> charateristics of the TextView.
8788     * The text must be spannable and the movement method must allow for arbitary selection.
8789     *
8790     * See also {@link #canSelectText()}.
8791     */
8792    boolean textCanBeSelected() {
8793        // prepareCursorController() relies on this method.
8794        // If you change this condition, make sure prepareCursorController is called anywhere
8795        // the value of this condition might be changed.
8796        if (mMovement == null || !mMovement.canSelectArbitrarily()) return false;
8797        return isTextEditable() ||
8798                (isTextSelectable() && mText instanceof Spannable && isEnabled());
8799    }
8800
8801    private Locale getTextServicesLocale(boolean allowNullLocale) {
8802        // Start fetching the text services locale asynchronously.
8803        updateTextServicesLocaleAsync();
8804        // If !allowNullLocale and there is no cached text services locale, just return the default
8805        // locale.
8806        return (mCurrentSpellCheckerLocaleCache == null && !allowNullLocale) ? Locale.getDefault()
8807                : mCurrentSpellCheckerLocaleCache;
8808    }
8809
8810    /**
8811     * This is a temporary method. Future versions may support multi-locale text.
8812     * Caveat: This method may not return the latest text services locale, but this should be
8813     * acceptable and it's more important to make this method asynchronous.
8814     *
8815     * @return The locale that should be used for a word iterator
8816     * in this TextView, based on the current spell checker settings,
8817     * the current IME's locale, or the system default locale.
8818     * Please note that a word iterator in this TextView is different from another word iterator
8819     * used by SpellChecker.java of TextView. This method should be used for the former.
8820     * @hide
8821     */
8822    // TODO: Support multi-locale
8823    // TODO: Update the text services locale immediately after the keyboard locale is switched
8824    // by catching intent of keyboard switch event
8825    public Locale getTextServicesLocale() {
8826        return getTextServicesLocale(false /* allowNullLocale */);
8827    }
8828
8829    /**
8830     * @return true if this TextView is specialized for showing and interacting with the extracted
8831     * text in a full-screen input method.
8832     * @hide
8833     */
8834    public boolean isInExtractedMode() {
8835        return false;
8836    }
8837
8838    /**
8839     * This is a temporary method. Future versions may support multi-locale text.
8840     * Caveat: This method may not return the latest spell checker locale, but this should be
8841     * acceptable and it's more important to make this method asynchronous.
8842     *
8843     * @return The locale that should be used for a spell checker in this TextView,
8844     * based on the current spell checker settings, the current IME's locale, or the system default
8845     * locale.
8846     * @hide
8847     */
8848    public Locale getSpellCheckerLocale() {
8849        return getTextServicesLocale(true /* allowNullLocale */);
8850    }
8851
8852    private void updateTextServicesLocaleAsync() {
8853        // AsyncTask.execute() uses a serial executor which means we don't have
8854        // to lock around updateTextServicesLocaleLocked() to prevent it from
8855        // being executed n times in parallel.
8856        AsyncTask.execute(new Runnable() {
8857            @Override
8858            public void run() {
8859                updateTextServicesLocaleLocked();
8860            }
8861        });
8862    }
8863
8864    private void updateTextServicesLocaleLocked() {
8865        final TextServicesManager textServicesManager = (TextServicesManager)
8866                mContext.getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
8867        final SpellCheckerSubtype subtype = textServicesManager.getCurrentSpellCheckerSubtype(true);
8868        final Locale locale;
8869        if (subtype != null) {
8870            locale = subtype.getLocaleObject();
8871        } else {
8872            locale = null;
8873        }
8874        mCurrentSpellCheckerLocaleCache = locale;
8875    }
8876
8877    void onLocaleChanged() {
8878        // Will be re-created on demand in getWordIterator with the proper new locale
8879        mEditor.mWordIterator = null;
8880    }
8881
8882    /**
8883     * This method is used by the ArrowKeyMovementMethod to jump from one word to the other.
8884     * Made available to achieve a consistent behavior.
8885     * @hide
8886     */
8887    public WordIterator getWordIterator() {
8888        if (mEditor != null) {
8889            return mEditor.getWordIterator();
8890        } else {
8891            return null;
8892        }
8893    }
8894
8895    /** @hide */
8896    @Override
8897    public void onPopulateAccessibilityEventInternal(AccessibilityEvent event) {
8898        super.onPopulateAccessibilityEventInternal(event);
8899
8900        final CharSequence text = getTextForAccessibility();
8901        if (!TextUtils.isEmpty(text)) {
8902            event.getText().add(text);
8903        }
8904    }
8905
8906    /**
8907     * @return true if the user has explicitly allowed accessibility services
8908     * to speak passwords.
8909     */
8910    private boolean shouldSpeakPasswordsForAccessibility() {
8911        return (Settings.Secure.getIntForUser(mContext.getContentResolver(),
8912                Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0,
8913                UserHandle.USER_CURRENT_OR_SELF) == 1);
8914    }
8915
8916    @Override
8917    public CharSequence getAccessibilityClassName() {
8918        return TextView.class.getName();
8919    }
8920
8921    @Override
8922    public void onProvideStructure(ViewStructure structure) {
8923        super.onProvideStructure(structure);
8924        final boolean isPassword = hasPasswordTransformationMethod()
8925                || isPasswordInputType(getInputType());
8926        if (!isPassword) {
8927            if (mLayout == null) {
8928                assumeLayout();
8929            }
8930            Layout layout = mLayout;
8931            final int lineCount = layout.getLineCount();
8932            if (lineCount <= 1) {
8933                // Simple case: this is a single line.
8934                structure.setText(getText(), getSelectionStart(), getSelectionEnd());
8935            } else {
8936                // Complex case: multi-line, could be scrolled or within a scroll container
8937                // so some lines are not visible.
8938                final int[] tmpCords = new int[2];
8939                getLocationInWindow(tmpCords);
8940                final int topWindowLocation = tmpCords[1];
8941                View root = this;
8942                ViewParent viewParent = getParent();
8943                while (viewParent instanceof View) {
8944                    root = (View) viewParent;
8945                    viewParent = root.getParent();
8946                }
8947                final int windowHeight = root.getHeight();
8948                final int topLine;
8949                final int bottomLine;
8950                if (topWindowLocation >= 0) {
8951                    // The top of the view is fully within its window; start text at line 0.
8952                    topLine = getLineAtCoordinateUnclamped(0);
8953                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1);
8954                } else {
8955                    // The top of hte window has scrolled off the top of the window; figure out
8956                    // the starting line for this.
8957                    topLine = getLineAtCoordinateUnclamped(-topWindowLocation);
8958                    bottomLine = getLineAtCoordinateUnclamped(windowHeight-1-topWindowLocation);
8959                }
8960                // We want to return some contextual lines above/below the lines that are
8961                // actually visible.
8962                int expandedTopLine = topLine - (bottomLine-topLine)/2;
8963                if (expandedTopLine < 0) {
8964                    expandedTopLine = 0;
8965                }
8966                int expandedBottomLine = bottomLine + (bottomLine-topLine)/2;
8967                if (expandedBottomLine >= lineCount) {
8968                    expandedBottomLine = lineCount-1;
8969                }
8970                // Convert lines into character offsets.
8971                int expandedTopChar = layout.getLineStart(expandedTopLine);
8972                int expandedBottomChar = layout.getLineEnd(expandedBottomLine);
8973                // Take into account selection -- if there is a selection, we need to expand
8974                // the text we are returning to include that selection.
8975                final int selStart = getSelectionStart();
8976                final int selEnd = getSelectionEnd();
8977                if (selStart < selEnd) {
8978                    if (selStart < expandedTopChar) {
8979                        expandedTopChar = selStart;
8980                    }
8981                    if (selEnd > expandedBottomChar) {
8982                        expandedBottomChar = selEnd;
8983                    }
8984                }
8985                // Get the text and trim it to the range we are reporting.
8986                CharSequence text = getText();
8987                if (expandedTopChar > 0 || expandedBottomChar < text.length()) {
8988                    text = text.subSequence(expandedTopChar, expandedBottomChar);
8989                }
8990                structure.setText(text, selStart-expandedTopChar, selEnd-expandedTopChar);
8991                final int[] lineOffsets = new int[bottomLine-topLine+1];
8992                final int[] lineBaselines = new int[bottomLine-topLine+1];
8993                final int baselineOffset = getBaselineOffset();
8994                for (int i=topLine; i<=bottomLine; i++) {
8995                    lineOffsets[i-topLine] = layout.getLineStart(i);
8996                    lineBaselines[i-topLine] = layout.getLineBaseline(i) + baselineOffset;
8997                }
8998                structure.setTextLines(lineOffsets, lineBaselines);
8999            }
9000
9001            // Extract style information that applies to the TextView as a whole.
9002            int style = 0;
9003            int typefaceStyle = getTypefaceStyle();
9004            if ((typefaceStyle & Typeface.BOLD) != 0) {
9005                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9006            }
9007            if ((typefaceStyle & Typeface.ITALIC) != 0) {
9008                style |= AssistStructure.ViewNode.TEXT_STYLE_ITALIC;
9009            }
9010
9011            // Global styles can also be set via TextView.setPaintFlags().
9012            int paintFlags = mTextPaint.getFlags();
9013            if ((paintFlags & Paint.FAKE_BOLD_TEXT_FLAG) != 0) {
9014                style |= AssistStructure.ViewNode.TEXT_STYLE_BOLD;
9015            }
9016            if ((paintFlags & Paint.UNDERLINE_TEXT_FLAG) != 0) {
9017                style |= AssistStructure.ViewNode.TEXT_STYLE_UNDERLINE;
9018            }
9019            if ((paintFlags & Paint.STRIKE_THRU_TEXT_FLAG) != 0) {
9020                style |= AssistStructure.ViewNode.TEXT_STYLE_STRIKE_THRU;
9021            }
9022
9023            // TextView does not have its own text background color. A background is either part
9024            // of the View (and can be any drawable) or a BackgroundColorSpan inside the text.
9025            structure.setTextStyle(getTextSize(), getCurrentTextColor(),
9026                    AssistStructure.ViewNode.TEXT_COLOR_UNDEFINED /* bgColor */, style);
9027        }
9028        structure.setHint(getHint());
9029    }
9030
9031    /** @hide */
9032    @Override
9033    public void onInitializeAccessibilityEventInternal(AccessibilityEvent event) {
9034        super.onInitializeAccessibilityEventInternal(event);
9035
9036        final boolean isPassword = hasPasswordTransformationMethod();
9037        event.setPassword(isPassword);
9038
9039        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
9040            event.setFromIndex(Selection.getSelectionStart(mText));
9041            event.setToIndex(Selection.getSelectionEnd(mText));
9042            event.setItemCount(mText.length());
9043        }
9044    }
9045
9046    /** @hide */
9047    @Override
9048    public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
9049        super.onInitializeAccessibilityNodeInfoInternal(info);
9050
9051        final boolean isPassword = hasPasswordTransformationMethod();
9052        info.setPassword(isPassword);
9053        info.setText(getTextForAccessibility());
9054
9055        if (mBufferType == BufferType.EDITABLE) {
9056            info.setEditable(true);
9057        }
9058
9059        if (mEditor != null) {
9060            info.setInputType(mEditor.mInputType);
9061
9062            if (mEditor.mError != null) {
9063                info.setContentInvalid(true);
9064                info.setError(mEditor.mError);
9065            }
9066        }
9067
9068        if (!TextUtils.isEmpty(mText)) {
9069            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
9070            info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
9071            info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
9072                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
9073                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE
9074                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH
9075                    | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE);
9076            info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
9077        }
9078
9079        if (isFocused()) {
9080            if (canCopy()) {
9081                info.addAction(AccessibilityNodeInfo.ACTION_COPY);
9082            }
9083            if (canPaste()) {
9084                info.addAction(AccessibilityNodeInfo.ACTION_PASTE);
9085            }
9086            if (canCut()) {
9087                info.addAction(AccessibilityNodeInfo.ACTION_CUT);
9088            }
9089            if (canShare()) {
9090                info.addAction(new AccessibilityNodeInfo.AccessibilityAction(
9091                        ACCESSIBILITY_ACTION_SHARE,
9092                        getResources().getString(com.android.internal.R.string.share)));
9093            }
9094            if (canProcessText()) {  // also implies mEditor is not null.
9095                mEditor.mProcessTextIntentActionsHandler.onInitializeAccessibilityNodeInfo(info);
9096            }
9097        }
9098
9099        // Check for known input filter types.
9100        final int numFilters = mFilters.length;
9101        for (int i = 0; i < numFilters; i++) {
9102            final InputFilter filter = mFilters[i];
9103            if (filter instanceof InputFilter.LengthFilter) {
9104                info.setMaxTextLength(((InputFilter.LengthFilter) filter).getMax());
9105            }
9106        }
9107
9108        if (!isSingleLine()) {
9109            info.setMultiLine(true);
9110        }
9111    }
9112
9113    /**
9114     * Performs an accessibility action after it has been offered to the
9115     * delegate.
9116     *
9117     * @hide
9118     */
9119    @Override
9120    public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
9121        if (mEditor != null
9122                && mEditor.mProcessTextIntentActionsHandler.performAccessibilityAction(action)) {
9123            return true;
9124        }
9125        switch (action) {
9126            case AccessibilityNodeInfo.ACTION_CLICK: {
9127                return performAccessibilityActionClick(arguments);
9128            }
9129            case AccessibilityNodeInfo.ACTION_COPY: {
9130                if (isFocused() && canCopy()) {
9131                    if (onTextContextMenuItem(ID_COPY)) {
9132                        return true;
9133                    }
9134                }
9135            } return false;
9136            case AccessibilityNodeInfo.ACTION_PASTE: {
9137                if (isFocused() && canPaste()) {
9138                    if (onTextContextMenuItem(ID_PASTE)) {
9139                        return true;
9140                    }
9141                }
9142            } return false;
9143            case AccessibilityNodeInfo.ACTION_CUT: {
9144                if (isFocused() && canCut()) {
9145                    if (onTextContextMenuItem(ID_CUT)) {
9146                        return true;
9147                    }
9148                }
9149            } return false;
9150            case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
9151                ensureIterableTextForAccessibilitySelectable();
9152                CharSequence text = getIterableTextForAccessibility();
9153                if (text == null) {
9154                    return false;
9155                }
9156                final int start = (arguments != null) ? arguments.getInt(
9157                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
9158                final int end = (arguments != null) ? arguments.getInt(
9159                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
9160                if ((getSelectionStart() != start || getSelectionEnd() != end)) {
9161                    // No arguments clears the selection.
9162                    if (start == end && end == -1) {
9163                        Selection.removeSelection((Spannable) text);
9164                        return true;
9165                    }
9166                    if (start >= 0 && start <= end && end <= text.length()) {
9167                        Selection.setSelection((Spannable) text, start, end);
9168                        // Make sure selection mode is engaged.
9169                        if (mEditor != null) {
9170                            mEditor.startSelectionActionMode();
9171                        }
9172                        return true;
9173                    }
9174                }
9175            } return false;
9176            case AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY:
9177            case AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY: {
9178                ensureIterableTextForAccessibilitySelectable();
9179                return super.performAccessibilityActionInternal(action, arguments);
9180            }
9181            case ACCESSIBILITY_ACTION_SHARE: {
9182                if (isFocused() && canShare()) {
9183                    if (onTextContextMenuItem(ID_SHARE)) {
9184                        return true;
9185                    }
9186                }
9187            } return false;
9188            default: {
9189                return super.performAccessibilityActionInternal(action, arguments);
9190            }
9191        }
9192    }
9193
9194    private boolean performAccessibilityActionClick(Bundle arguments) {
9195        boolean handled = false;
9196        boolean processed = false;
9197
9198        if (!isEnabled()) {
9199            return false;
9200        }
9201
9202        if (arguments != null && arguments.containsKey(
9203                AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_SPAN_INDEX_INT)) {
9204            int spanIndex = arguments.getInt(
9205                    AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_SPAN_INDEX_INT, -1);
9206            if (spanIndex >= 0 && hasSpannableText()) {
9207                ClickableSpan[] spans = ((Spannable) mText).getSpans(0,
9208                        mText.length(), ClickableSpan.class);
9209                if (spans != null && spans.length > spanIndex && spans[spanIndex] != null) {
9210                    // Simulate View.onTouchEvent for an ACTION_UP event
9211                    if (isFocusable() && !isFocused()) {
9212                        requestFocus();
9213                    }
9214                    spans[spanIndex].onClick(this);
9215                    handled = true;
9216                }
9217            }
9218            processed = true;
9219        }
9220
9221        if (!processed && arguments != null &&  arguments.containsKey(
9222                AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_CHARACTER_INDEX_INT)) {
9223            int characterIndex = arguments.getInt(
9224                    AccessibilityNodeInfo.ACTION_ARGUMENT_CLICK_CHARACTER_INDEX_INT, -1);
9225            if (characterIndex >= 0 && hasSpannableText()) {
9226                ClickableSpan[] spans = ((Spannable) mText).getSpans(characterIndex,
9227                        characterIndex, ClickableSpan.class);
9228                // click only on the first span to keep parity with onTouch() implementation
9229                if (spans != null && spans.length > 0 && spans[0] != null) {
9230                    // Simulate View.onTouchEvent for an ACTION_UP event
9231                    if (isFocusable() && !isFocused()) {
9232                        requestFocus();
9233                    }
9234                    spans[0].onClick(this);
9235                    handled = true;
9236                }
9237            }
9238            processed = true;
9239        }
9240
9241        if (!processed && (isClickable() || isLongClickable())) {
9242            // Simulate View.onTouchEvent for an ACTION_UP event
9243            if (isFocusable() && !isFocused()) {
9244                requestFocus();
9245            }
9246
9247            performClick();
9248            handled = true;
9249        }
9250
9251        // Show the IME, except when selecting in read-only text.
9252        if ((mMovement != null || onCheckIsTextEditor()) && hasSpannableText() && mLayout != null
9253                && (isTextEditable() || isTextSelectable()) && isFocused()) {
9254            final InputMethodManager imm = InputMethodManager.peekInstance();
9255            viewClicked(imm);
9256            if (!isTextSelectable() && mEditor.mShowSoftInputOnFocus && imm != null) {
9257                handled |= imm.showSoftInput(this, 0);
9258            }
9259        }
9260
9261        return handled;
9262    }
9263
9264    private boolean hasSpannableText() {
9265        return mText != null && mText instanceof Spannable;
9266    }
9267
9268    /** @hide */
9269    @Override
9270    public void sendAccessibilityEventInternal(int eventType) {
9271        if (eventType == AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED && mEditor != null) {
9272            mEditor.mProcessTextIntentActionsHandler.initializeAccessibilityActions();
9273        }
9274
9275        // Do not send scroll events since first they are not interesting for
9276        // accessibility and second such events a generated too frequently.
9277        // For details see the implementation of bringTextIntoView().
9278        if (eventType == AccessibilityEvent.TYPE_VIEW_SCROLLED) {
9279            return;
9280        }
9281        super.sendAccessibilityEventInternal(eventType);
9282    }
9283
9284    /**
9285     * Returns the text that should be exposed to accessibility services.
9286     * <p>
9287     * This approximates what is displayed visually. If the user has specified
9288     * that accessibility services should speak passwords, this method will
9289     * bypass any password transformation method and return unobscured text.
9290     *
9291     * @return the text that should be exposed to accessibility services, may
9292     *         be {@code null} if no text is set
9293     */
9294    @Nullable
9295    private CharSequence getTextForAccessibility() {
9296        // If the text is empty, we must be showing the hint text.
9297        if (TextUtils.isEmpty(mText)) {
9298            return mHint;
9299        }
9300
9301        // Check whether we need to bypass the transformation
9302        // method and expose unobscured text.
9303        if (hasPasswordTransformationMethod() && shouldSpeakPasswordsForAccessibility()) {
9304            return mText;
9305        }
9306
9307        // Otherwise, speak whatever text is being displayed.
9308        return mTransformed;
9309    }
9310
9311    void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText,
9312            int fromIndex, int removedCount, int addedCount) {
9313        AccessibilityEvent event =
9314                AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
9315        event.setFromIndex(fromIndex);
9316        event.setRemovedCount(removedCount);
9317        event.setAddedCount(addedCount);
9318        event.setBeforeText(beforeText);
9319        sendAccessibilityEventUnchecked(event);
9320    }
9321
9322    /**
9323     * Returns whether this text view is a current input method target.  The
9324     * default implementation just checks with {@link InputMethodManager}.
9325     */
9326    public boolean isInputMethodTarget() {
9327        InputMethodManager imm = InputMethodManager.peekInstance();
9328        return imm != null && imm.isActive(this);
9329    }
9330
9331    static final int ID_SELECT_ALL = android.R.id.selectAll;
9332    static final int ID_UNDO = android.R.id.undo;
9333    static final int ID_REDO = android.R.id.redo;
9334    static final int ID_CUT = android.R.id.cut;
9335    static final int ID_COPY = android.R.id.copy;
9336    static final int ID_PASTE = android.R.id.paste;
9337    static final int ID_SHARE = android.R.id.shareText;
9338    static final int ID_PASTE_AS_PLAIN_TEXT = android.R.id.pasteAsPlainText;
9339    static final int ID_REPLACE = android.R.id.replaceText;
9340
9341    /**
9342     * Called when a context menu option for the text view is selected.  Currently
9343     * this will be one of {@link android.R.id#selectAll}, {@link android.R.id#cut},
9344     * {@link android.R.id#copy}, {@link android.R.id#paste} or {@link android.R.id#shareText}.
9345     *
9346     * @return true if the context menu item action was performed.
9347     */
9348    public boolean onTextContextMenuItem(int id) {
9349        int min = 0;
9350        int max = mText.length();
9351
9352        if (isFocused()) {
9353            final int selStart = getSelectionStart();
9354            final int selEnd = getSelectionEnd();
9355
9356            min = Math.max(0, Math.min(selStart, selEnd));
9357            max = Math.max(0, Math.max(selStart, selEnd));
9358        }
9359
9360        switch (id) {
9361            case ID_SELECT_ALL:
9362                // This starts an action mode if triggered from another action mode. Text is
9363                // highlighted, so that it can be bulk edited, like selectAllOnFocus does. Returns
9364                // true even if text is empty.
9365                boolean shouldRestartActionMode =
9366                        mEditor != null && mEditor.mTextActionMode != null;
9367                stopTextActionMode();
9368                selectAllText();
9369                if (shouldRestartActionMode) {
9370                    mEditor.startSelectionActionMode();
9371                }
9372                return true;
9373
9374            case ID_UNDO:
9375                if (mEditor != null) {
9376                    mEditor.undo();
9377                }
9378                return true;  // Returns true even if nothing was undone.
9379
9380            case ID_REDO:
9381                if (mEditor != null) {
9382                    mEditor.redo();
9383                }
9384                return true;  // Returns true even if nothing was undone.
9385
9386            case ID_PASTE:
9387                paste(min, max, true /* withFormatting */);
9388                return true;
9389
9390            case ID_PASTE_AS_PLAIN_TEXT:
9391                paste(min, max, false /* withFormatting */);
9392                return true;
9393
9394            case ID_CUT:
9395                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9396                deleteText_internal(min, max);
9397                stopTextActionMode();
9398                return true;
9399
9400            case ID_COPY:
9401                setPrimaryClip(ClipData.newPlainText(null, getTransformedText(min, max)));
9402                stopTextActionMode();
9403                return true;
9404
9405            case ID_REPLACE:
9406                if (mEditor != null) {
9407                    mEditor.replace();
9408                }
9409                return true;
9410
9411            case ID_SHARE:
9412                shareSelectedText();
9413                return true;
9414        }
9415        return false;
9416    }
9417
9418    CharSequence getTransformedText(int start, int end) {
9419        return removeSuggestionSpans(mTransformed.subSequence(start, end));
9420    }
9421
9422    @Override
9423    public boolean performLongClick() {
9424        boolean handled = false;
9425
9426        if (super.performLongClick()) {
9427            handled = true;
9428        }
9429
9430        if (mEditor != null) {
9431            handled |= mEditor.performLongClick(handled);
9432        }
9433
9434        if (handled) {
9435            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
9436            if (mEditor != null) mEditor.mDiscardNextActionUp = true;
9437        }
9438
9439        return handled;
9440    }
9441
9442    @Override
9443    protected void onScrollChanged(int horiz, int vert, int oldHoriz, int oldVert) {
9444        super.onScrollChanged(horiz, vert, oldHoriz, oldVert);
9445        if (mEditor != null) {
9446            mEditor.onScrollChanged();
9447        }
9448    }
9449
9450    /**
9451     * Return whether or not suggestions are enabled on this TextView. The suggestions are generated
9452     * by the IME or by the spell checker as the user types. This is done by adding
9453     * {@link SuggestionSpan}s to the text.
9454     *
9455     * When suggestions are enabled (default), this list of suggestions will be displayed when the
9456     * user asks for them on these parts of the text. This value depends on the inputType of this
9457     * TextView.
9458     *
9459     * The class of the input type must be {@link InputType#TYPE_CLASS_TEXT}.
9460     *
9461     * In addition, the type variation must be one of
9462     * {@link InputType#TYPE_TEXT_VARIATION_NORMAL},
9463     * {@link InputType#TYPE_TEXT_VARIATION_EMAIL_SUBJECT},
9464     * {@link InputType#TYPE_TEXT_VARIATION_LONG_MESSAGE},
9465     * {@link InputType#TYPE_TEXT_VARIATION_SHORT_MESSAGE} or
9466     * {@link InputType#TYPE_TEXT_VARIATION_WEB_EDIT_TEXT}.
9467     *
9468     * And finally, the {@link InputType#TYPE_TEXT_FLAG_NO_SUGGESTIONS} flag must <i>not</i> be set.
9469     *
9470     * @return true if the suggestions popup window is enabled, based on the inputType.
9471     */
9472    public boolean isSuggestionsEnabled() {
9473        if (mEditor == null) return false;
9474        if ((mEditor.mInputType & InputType.TYPE_MASK_CLASS) != InputType.TYPE_CLASS_TEXT) {
9475            return false;
9476        }
9477        if ((mEditor.mInputType & InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS) > 0) return false;
9478
9479        final int variation = mEditor.mInputType & EditorInfo.TYPE_MASK_VARIATION;
9480        return (variation == EditorInfo.TYPE_TEXT_VARIATION_NORMAL ||
9481                variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT ||
9482                variation == EditorInfo.TYPE_TEXT_VARIATION_LONG_MESSAGE ||
9483                variation == EditorInfo.TYPE_TEXT_VARIATION_SHORT_MESSAGE ||
9484                variation == EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);
9485    }
9486
9487    /**
9488     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9489     * selection is initiated in this View.
9490     *
9491     * <p>The standard implementation populates the menu with a subset of Select All, Cut, Copy,
9492     * Paste, Replace and Share actions, depending on what this View supports.
9493     *
9494     * <p>A custom implementation can add new entries in the default menu in its
9495     * {@link android.view.ActionMode.Callback#onPrepareActionMode(ActionMode, android.view.Menu)}
9496     * method. The default actions can also be removed from the menu using
9497     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9498     * {@link android.R.id#cut}, {@link android.R.id#copy}, {@link android.R.id#paste},
9499     * {@link android.R.id#replaceText} or {@link android.R.id#shareText} ids as parameters.
9500     *
9501     * <p>Returning false from
9502     * {@link android.view.ActionMode.Callback#onCreateActionMode(ActionMode, android.view.Menu)}
9503     * will prevent the action mode from being started.
9504     *
9505     * <p>Action click events should be handled by the custom implementation of
9506     * {@link android.view.ActionMode.Callback#onActionItemClicked(ActionMode,
9507     * android.view.MenuItem)}.
9508     *
9509     * <p>Note that text selection mode is not started when a TextView receives focus and the
9510     * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in
9511     * that case, to allow for quick replacement.
9512     */
9513    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
9514        createEditorIfNeeded();
9515        mEditor.mCustomSelectionActionModeCallback = actionModeCallback;
9516    }
9517
9518    /**
9519     * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null.
9520     *
9521     * @return The current custom selection callback.
9522     */
9523    public ActionMode.Callback getCustomSelectionActionModeCallback() {
9524        return mEditor == null ? null : mEditor.mCustomSelectionActionModeCallback;
9525    }
9526
9527    /**
9528     * If provided, this ActionMode.Callback will be used to create the ActionMode when text
9529     * insertion is initiated in this View.
9530     * The standard implementation populates the menu with a subset of Select All,
9531     * Paste and Replace actions, depending on what this View supports.
9532     *
9533     * <p>A custom implementation can add new entries in the default menu in its
9534     * {@link android.view.ActionMode.Callback#onPrepareActionMode(android.view.ActionMode,
9535     * android.view.Menu)} method. The default actions can also be removed from the menu using
9536     * {@link android.view.Menu#removeItem(int)} and passing {@link android.R.id#selectAll},
9537     * {@link android.R.id#paste} or {@link android.R.id#replaceText} ids as parameters.</p>
9538     *
9539     * <p>Returning false from
9540     * {@link android.view.ActionMode.Callback#onCreateActionMode(android.view.ActionMode,
9541     * android.view.Menu)} will prevent the action mode from being started.</p>
9542     *
9543     * <p>Action click events should be handled by the custom implementation of
9544     * {@link android.view.ActionMode.Callback#onActionItemClicked(android.view.ActionMode,
9545     * android.view.MenuItem)}.</p>
9546     *
9547     * <p>Note that text insertion mode is not started when a TextView receives focus and the
9548     * {@link android.R.attr#selectAllOnFocus} flag has been set.</p>
9549     */
9550    public void setCustomInsertionActionModeCallback(ActionMode.Callback actionModeCallback) {
9551        createEditorIfNeeded();
9552        mEditor.mCustomInsertionActionModeCallback = actionModeCallback;
9553    }
9554
9555    /**
9556     * Retrieves the value set in {@link #setCustomInsertionActionModeCallback}. Default is null.
9557     *
9558     * @return The current custom insertion callback.
9559     */
9560    public ActionMode.Callback getCustomInsertionActionModeCallback() {
9561        return mEditor == null ? null : mEditor.mCustomInsertionActionModeCallback;
9562    }
9563
9564    /**
9565     * @hide
9566     */
9567    protected void stopTextActionMode() {
9568        if (mEditor != null) {
9569            mEditor.stopTextActionMode();
9570        }
9571    }
9572
9573    boolean canUndo() {
9574        return mEditor != null && mEditor.canUndo();
9575    }
9576
9577    boolean canRedo() {
9578        return mEditor != null && mEditor.canRedo();
9579    }
9580
9581    boolean canCut() {
9582        if (hasPasswordTransformationMethod()) {
9583            return false;
9584        }
9585
9586        if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mEditor != null &&
9587                mEditor.mKeyListener != null) {
9588            return true;
9589        }
9590
9591        return false;
9592    }
9593
9594    boolean canCopy() {
9595        if (hasPasswordTransformationMethod()) {
9596            return false;
9597        }
9598
9599        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9600            return true;
9601        }
9602
9603        return false;
9604    }
9605
9606    boolean canShare() {
9607        return canCopy();
9608    }
9609
9610    boolean canPaste() {
9611        return (mText instanceof Editable &&
9612                mEditor != null && mEditor.mKeyListener != null &&
9613                getSelectionStart() >= 0 &&
9614                getSelectionEnd() >= 0 &&
9615                ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)).
9616                hasPrimaryClip());
9617    }
9618
9619    boolean canProcessText() {
9620        if (!getContext().canStartActivityForResult() || getId() == View.NO_ID
9621                || hasPasswordTransformationMethod()) {
9622            return false;
9623        }
9624
9625        if (mText.length() > 0 && hasSelection() && mEditor != null) {
9626            return true;
9627        }
9628
9629        return false;
9630    }
9631
9632    boolean canSelectAllText() {
9633        return canSelectText() && !hasPasswordTransformationMethod()
9634                && !(getSelectionStart() == 0 && getSelectionEnd() == mText.length());
9635    }
9636
9637    boolean selectAllText() {
9638        // Need to hide insert point cursor controller before settings selection, otherwise insert
9639        // point cursor controller obtains cursor update event and update cursor with cancelling
9640        // selection.
9641        if (mEditor != null) {
9642            mEditor.hideInsertionPointCursorController();
9643        }
9644        final int length = mText.length();
9645        Selection.setSelection((Spannable) mText, 0, length);
9646        return length > 0;
9647    }
9648
9649    void replaceSelectionWithText(CharSequence text) {
9650        ((Editable) mText).replace(getSelectionStart(), getSelectionEnd(), text);
9651    }
9652
9653    /**
9654     * Paste clipboard content between min and max positions.
9655     */
9656    private void paste(int min, int max, boolean withFormatting) {
9657        ClipboardManager clipboard =
9658            (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
9659        ClipData clip = clipboard.getPrimaryClip();
9660        if (clip != null) {
9661            boolean didFirst = false;
9662            for (int i=0; i<clip.getItemCount(); i++) {
9663                final CharSequence paste;
9664                if (withFormatting) {
9665                    paste = clip.getItemAt(i).coerceToStyledText(getContext());
9666                } else {
9667                    // Get an item as text and remove all spans by toString().
9668                    final CharSequence text = clip.getItemAt(i).coerceToText(getContext());
9669                    paste = (text instanceof Spanned) ? text.toString() : text;
9670                }
9671                if (paste != null) {
9672                    if (!didFirst) {
9673                        Selection.setSelection((Spannable) mText, max);
9674                        ((Editable) mText).replace(min, max, paste);
9675                        didFirst = true;
9676                    } else {
9677                        ((Editable) mText).insert(getSelectionEnd(), "\n");
9678                        ((Editable) mText).insert(getSelectionEnd(), paste);
9679                    }
9680                }
9681            }
9682            stopTextActionMode();
9683            sLastCutCopyOrTextChangedTime = 0;
9684        }
9685    }
9686
9687    private void shareSelectedText() {
9688        String selectedText = getSelectedText();
9689        if (selectedText != null && !selectedText.isEmpty()) {
9690            Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
9691            sharingIntent.setType("text/plain");
9692            sharingIntent.removeExtra(android.content.Intent.EXTRA_TEXT);
9693            sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, selectedText);
9694            getContext().startActivity(Intent.createChooser(sharingIntent, null));
9695            stopTextActionMode();
9696        }
9697    }
9698
9699    private void setPrimaryClip(ClipData clip) {
9700        ClipboardManager clipboard = (ClipboardManager) getContext().
9701                getSystemService(Context.CLIPBOARD_SERVICE);
9702        clipboard.setPrimaryClip(clip);
9703        sLastCutCopyOrTextChangedTime = SystemClock.uptimeMillis();
9704    }
9705
9706    /**
9707     * Get the character offset closest to the specified absolute position. A typical use case is to
9708     * pass the result of {@link MotionEvent#getX()} and {@link MotionEvent#getY()} to this method.
9709     *
9710     * @param x The horizontal absolute position of a point on screen
9711     * @param y The vertical absolute position of a point on screen
9712     * @return the character offset for the character whose position is closest to the specified
9713     *  position. Returns -1 if there is no layout.
9714     */
9715    public int getOffsetForPosition(float x, float y) {
9716        if (getLayout() == null) return -1;
9717        final int line = getLineAtCoordinate(y);
9718        final int offset = getOffsetAtCoordinate(line, x);
9719        return offset;
9720    }
9721
9722    float convertToLocalHorizontalCoordinate(float x) {
9723        x -= getTotalPaddingLeft();
9724        // Clamp the position to inside of the view.
9725        x = Math.max(0.0f, x);
9726        x = Math.min(getWidth() - getTotalPaddingRight() - 1, x);
9727        x += getScrollX();
9728        return x;
9729    }
9730
9731    int getLineAtCoordinate(float y) {
9732        y -= getTotalPaddingTop();
9733        // Clamp the position to inside of the view.
9734        y = Math.max(0.0f, y);
9735        y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y);
9736        y += getScrollY();
9737        return getLayout().getLineForVertical((int) y);
9738    }
9739
9740    int getLineAtCoordinateUnclamped(float y) {
9741        y -= getTotalPaddingTop();
9742        y += getScrollY();
9743        return getLayout().getLineForVertical((int) y);
9744    }
9745
9746    int getOffsetAtCoordinate(int line, float x) {
9747        x = convertToLocalHorizontalCoordinate(x);
9748        return getLayout().getOffsetForHorizontal(line, x);
9749    }
9750
9751    @Override
9752    public boolean onDragEvent(DragEvent event) {
9753        switch (event.getAction()) {
9754            case DragEvent.ACTION_DRAG_STARTED:
9755                return mEditor != null && mEditor.hasInsertionController();
9756
9757            case DragEvent.ACTION_DRAG_ENTERED:
9758                TextView.this.requestFocus();
9759                return true;
9760
9761            case DragEvent.ACTION_DRAG_LOCATION:
9762                final int offset = getOffsetForPosition(event.getX(), event.getY());
9763                Selection.setSelection((Spannable)mText, offset);
9764                return true;
9765
9766            case DragEvent.ACTION_DROP:
9767                if (mEditor != null) mEditor.onDrop(event);
9768                return true;
9769
9770            case DragEvent.ACTION_DRAG_ENDED:
9771            case DragEvent.ACTION_DRAG_EXITED:
9772            default:
9773                return true;
9774        }
9775    }
9776
9777    boolean isInBatchEditMode() {
9778        if (mEditor == null) return false;
9779        final Editor.InputMethodState ims = mEditor.mInputMethodState;
9780        if (ims != null) {
9781            return ims.mBatchEditNesting > 0;
9782        }
9783        return mEditor.mInBatchEditControllers;
9784    }
9785
9786    @Override
9787    public void onRtlPropertiesChanged(int layoutDirection) {
9788        super.onRtlPropertiesChanged(layoutDirection);
9789
9790        final TextDirectionHeuristic newTextDir = getTextDirectionHeuristic();
9791        if (mTextDir != newTextDir) {
9792            mTextDir = newTextDir;
9793            if (mLayout != null) {
9794                checkForRelayout();
9795            }
9796        }
9797    }
9798
9799    /**
9800     * @hide
9801     */
9802    protected TextDirectionHeuristic getTextDirectionHeuristic() {
9803        if (hasPasswordTransformationMethod()) {
9804            // passwords fields should be LTR
9805            return TextDirectionHeuristics.LTR;
9806        }
9807
9808        // Always need to resolve layout direction first
9809        final boolean defaultIsRtl = (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
9810
9811        // Now, we can select the heuristic
9812        switch (getTextDirection()) {
9813            default:
9814            case TEXT_DIRECTION_FIRST_STRONG:
9815                return (defaultIsRtl ? TextDirectionHeuristics.FIRSTSTRONG_RTL :
9816                        TextDirectionHeuristics.FIRSTSTRONG_LTR);
9817            case TEXT_DIRECTION_ANY_RTL:
9818                return TextDirectionHeuristics.ANYRTL_LTR;
9819            case TEXT_DIRECTION_LTR:
9820                return TextDirectionHeuristics.LTR;
9821            case TEXT_DIRECTION_RTL:
9822                return TextDirectionHeuristics.RTL;
9823            case TEXT_DIRECTION_LOCALE:
9824                return TextDirectionHeuristics.LOCALE;
9825            case TEXT_DIRECTION_FIRST_STRONG_LTR:
9826                return TextDirectionHeuristics.FIRSTSTRONG_LTR;
9827            case TEXT_DIRECTION_FIRST_STRONG_RTL:
9828                return TextDirectionHeuristics.FIRSTSTRONG_RTL;
9829        }
9830    }
9831
9832    /**
9833     * @hide
9834     */
9835    @Override
9836    public void onResolveDrawables(int layoutDirection) {
9837        // No need to resolve twice
9838        if (mLastLayoutDirection == layoutDirection) {
9839            return;
9840        }
9841        mLastLayoutDirection = layoutDirection;
9842
9843        // Resolve drawables
9844        if (mDrawables != null) {
9845            mDrawables.resolveWithLayoutDirection(layoutDirection);
9846        }
9847    }
9848
9849    /**
9850     * @hide
9851     */
9852    protected void resetResolvedDrawables() {
9853        super.resetResolvedDrawables();
9854        mLastLayoutDirection = -1;
9855    }
9856
9857    /**
9858     * @hide
9859     */
9860    protected void viewClicked(InputMethodManager imm) {
9861        if (imm != null) {
9862            imm.viewClicked(this);
9863        }
9864    }
9865
9866    /**
9867     * Deletes the range of text [start, end[.
9868     * @hide
9869     */
9870    protected void deleteText_internal(int start, int end) {
9871        ((Editable) mText).delete(start, end);
9872    }
9873
9874    /**
9875     * Replaces the range of text [start, end[ by replacement text
9876     * @hide
9877     */
9878    protected void replaceText_internal(int start, int end, CharSequence text) {
9879        ((Editable) mText).replace(start, end, text);
9880    }
9881
9882    /**
9883     * Sets a span on the specified range of text
9884     * @hide
9885     */
9886    protected void setSpan_internal(Object span, int start, int end, int flags) {
9887        ((Editable) mText).setSpan(span, start, end, flags);
9888    }
9889
9890    /**
9891     * Moves the cursor to the specified offset position in text
9892     * @hide
9893     */
9894    protected void setCursorPosition_internal(int start, int end) {
9895        Selection.setSelection(((Editable) mText), start, end);
9896    }
9897
9898    /**
9899     * An Editor should be created as soon as any of the editable-specific fields (grouped
9900     * inside the Editor object) is assigned to a non-default value.
9901     * This method will create the Editor if needed.
9902     *
9903     * A standard TextView (as well as buttons, checkboxes...) should not qualify and hence will
9904     * have a null Editor, unlike an EditText. Inconsistent in-between states will have an
9905     * Editor for backward compatibility, as soon as one of these fields is assigned.
9906     *
9907     * Also note that for performance reasons, the mEditor is created when needed, but not
9908     * reset when no more edit-specific fields are needed.
9909     */
9910    private void createEditorIfNeeded() {
9911        if (mEditor == null) {
9912            mEditor = new Editor(this);
9913        }
9914    }
9915
9916    /**
9917     * @hide
9918     */
9919    @Override
9920    public CharSequence getIterableTextForAccessibility() {
9921        return mText;
9922    }
9923
9924    private void ensureIterableTextForAccessibilitySelectable() {
9925        if (!(mText instanceof Spannable)) {
9926            setText(mText, BufferType.SPANNABLE);
9927        }
9928    }
9929
9930    /**
9931     * @hide
9932     */
9933    @Override
9934    public TextSegmentIterator getIteratorForGranularity(int granularity) {
9935        switch (granularity) {
9936            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE: {
9937                Spannable text = (Spannable) getIterableTextForAccessibility();
9938                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9939                    AccessibilityIterators.LineTextSegmentIterator iterator =
9940                        AccessibilityIterators.LineTextSegmentIterator.getInstance();
9941                    iterator.initialize(text, getLayout());
9942                    return iterator;
9943                }
9944            } break;
9945            case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PAGE: {
9946                Spannable text = (Spannable) getIterableTextForAccessibility();
9947                if (!TextUtils.isEmpty(text) && getLayout() != null) {
9948                    AccessibilityIterators.PageTextSegmentIterator iterator =
9949                        AccessibilityIterators.PageTextSegmentIterator.getInstance();
9950                    iterator.initialize(this);
9951                    return iterator;
9952                }
9953            } break;
9954        }
9955        return super.getIteratorForGranularity(granularity);
9956    }
9957
9958    /**
9959     * @hide
9960     */
9961    @Override
9962    public int getAccessibilitySelectionStart() {
9963        return getSelectionStart();
9964    }
9965
9966    /**
9967     * @hide
9968     */
9969    public boolean isAccessibilitySelectionExtendable() {
9970        return true;
9971    }
9972
9973    /**
9974     * @hide
9975     */
9976    @Override
9977    public int getAccessibilitySelectionEnd() {
9978        return getSelectionEnd();
9979    }
9980
9981    /**
9982     * @hide
9983     */
9984    @Override
9985    public void setAccessibilitySelection(int start, int end) {
9986        if (getAccessibilitySelectionStart() == start
9987                && getAccessibilitySelectionEnd() == end) {
9988            return;
9989        }
9990        // Hide all selection controllers used for adjusting selection
9991        // since we are doing so explicitlty by other means and these
9992        // controllers interact with how selection behaves.
9993        if (mEditor != null) {
9994            mEditor.hideCursorAndSpanControllers();
9995            mEditor.stopTextActionMode();
9996        }
9997        CharSequence text = getIterableTextForAccessibility();
9998        if (Math.min(start, end) >= 0 && Math.max(start, end) <= text.length()) {
9999            Selection.setSelection((Spannable) text, start, end);
10000        } else {
10001            Selection.removeSelection((Spannable) text);
10002        }
10003    }
10004
10005    /** @hide */
10006    @Override
10007    protected void encodeProperties(@NonNull ViewHierarchyEncoder stream) {
10008        super.encodeProperties(stream);
10009
10010        TruncateAt ellipsize = getEllipsize();
10011        stream.addProperty("text:ellipsize", ellipsize == null ? null : ellipsize.name());
10012        stream.addProperty("text:textSize", getTextSize());
10013        stream.addProperty("text:scaledTextSize", getScaledTextSize());
10014        stream.addProperty("text:typefaceStyle", getTypefaceStyle());
10015        stream.addProperty("text:selectionStart", getSelectionStart());
10016        stream.addProperty("text:selectionEnd", getSelectionEnd());
10017        stream.addProperty("text:curTextColor", mCurTextColor);
10018        stream.addProperty("text:text", mText == null ? null : mText.toString());
10019        stream.addProperty("text:gravity", mGravity);
10020    }
10021
10022    /**
10023     * User interface state that is stored by TextView for implementing
10024     * {@link View#onSaveInstanceState}.
10025     */
10026    public static class SavedState extends BaseSavedState {
10027        int selStart;
10028        int selEnd;
10029        CharSequence text;
10030        boolean frozenWithFocus;
10031        CharSequence error;
10032        ParcelableParcel editorState;  // Optional state from Editor.
10033
10034        SavedState(Parcelable superState) {
10035            super(superState);
10036        }
10037
10038        @Override
10039        public void writeToParcel(Parcel out, int flags) {
10040            super.writeToParcel(out, flags);
10041            out.writeInt(selStart);
10042            out.writeInt(selEnd);
10043            out.writeInt(frozenWithFocus ? 1 : 0);
10044            TextUtils.writeToParcel(text, out, flags);
10045
10046            if (error == null) {
10047                out.writeInt(0);
10048            } else {
10049                out.writeInt(1);
10050                TextUtils.writeToParcel(error, out, flags);
10051            }
10052
10053            if (editorState == null) {
10054                out.writeInt(0);
10055            } else {
10056                out.writeInt(1);
10057                editorState.writeToParcel(out, flags);
10058            }
10059        }
10060
10061        @Override
10062        public String toString() {
10063            String str = "TextView.SavedState{"
10064                    + Integer.toHexString(System.identityHashCode(this))
10065                    + " start=" + selStart + " end=" + selEnd;
10066            if (text != null) {
10067                str += " text=" + text;
10068            }
10069            return str + "}";
10070        }
10071
10072        @SuppressWarnings("hiding")
10073        public static final Parcelable.Creator<SavedState> CREATOR
10074                = new Parcelable.Creator<SavedState>() {
10075            public SavedState createFromParcel(Parcel in) {
10076                return new SavedState(in);
10077            }
10078
10079            public SavedState[] newArray(int size) {
10080                return new SavedState[size];
10081            }
10082        };
10083
10084        private SavedState(Parcel in) {
10085            super(in);
10086            selStart = in.readInt();
10087            selEnd = in.readInt();
10088            frozenWithFocus = (in.readInt() != 0);
10089            text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
10090
10091            if (in.readInt() != 0) {
10092                error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
10093            }
10094
10095            if (in.readInt() != 0) {
10096                editorState = ParcelableParcel.CREATOR.createFromParcel(in);
10097            }
10098        }
10099    }
10100
10101    private static class CharWrapper implements CharSequence, GetChars, GraphicsOperations {
10102        private char[] mChars;
10103        private int mStart, mLength;
10104
10105        public CharWrapper(char[] chars, int start, int len) {
10106            mChars = chars;
10107            mStart = start;
10108            mLength = len;
10109        }
10110
10111        /* package */ void set(char[] chars, int start, int len) {
10112            mChars = chars;
10113            mStart = start;
10114            mLength = len;
10115        }
10116
10117        public int length() {
10118            return mLength;
10119        }
10120
10121        public char charAt(int off) {
10122            return mChars[off + mStart];
10123        }
10124
10125        @Override
10126        public String toString() {
10127            return new String(mChars, mStart, mLength);
10128        }
10129
10130        public CharSequence subSequence(int start, int end) {
10131            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10132                throw new IndexOutOfBoundsException(start + ", " + end);
10133            }
10134
10135            return new String(mChars, start + mStart, end - start);
10136        }
10137
10138        public void getChars(int start, int end, char[] buf, int off) {
10139            if (start < 0 || end < 0 || start > mLength || end > mLength) {
10140                throw new IndexOutOfBoundsException(start + ", " + end);
10141            }
10142
10143            System.arraycopy(mChars, start + mStart, buf, off, end - start);
10144        }
10145
10146        public void drawText(Canvas c, int start, int end,
10147                             float x, float y, Paint p) {
10148            c.drawText(mChars, start + mStart, end - start, x, y, p);
10149        }
10150
10151        public void drawTextRun(Canvas c, int start, int end,
10152                int contextStart, int contextEnd, float x, float y, boolean isRtl, Paint p) {
10153            int count = end - start;
10154            int contextCount = contextEnd - contextStart;
10155            c.drawTextRun(mChars, start + mStart, count, contextStart + mStart,
10156                    contextCount, x, y, isRtl, p);
10157        }
10158
10159        public float measureText(int start, int end, Paint p) {
10160            return p.measureText(mChars, start + mStart, end - start);
10161        }
10162
10163        public int getTextWidths(int start, int end, float[] widths, Paint p) {
10164            return p.getTextWidths(mChars, start + mStart, end - start, widths);
10165        }
10166
10167        public float getTextRunAdvances(int start, int end, int contextStart,
10168                int contextEnd, boolean isRtl, float[] advances, int advancesIndex,
10169                Paint p) {
10170            int count = end - start;
10171            int contextCount = contextEnd - contextStart;
10172            return p.getTextRunAdvances(mChars, start + mStart, count,
10173                    contextStart + mStart, contextCount, isRtl, advances,
10174                    advancesIndex);
10175        }
10176
10177        public int getTextRunCursor(int contextStart, int contextEnd, int dir,
10178                int offset, int cursorOpt, Paint p) {
10179            int contextCount = contextEnd - contextStart;
10180            return p.getTextRunCursor(mChars, contextStart + mStart,
10181                    contextCount, dir, offset + mStart, cursorOpt);
10182        }
10183    }
10184
10185    private static final class Marquee {
10186        // TODO: Add an option to configure this
10187        private static final float MARQUEE_DELTA_MAX = 0.07f;
10188        private static final int MARQUEE_DELAY = 1200;
10189        private static final int MARQUEE_DP_PER_SECOND = 30;
10190
10191        private static final byte MARQUEE_STOPPED = 0x0;
10192        private static final byte MARQUEE_STARTING = 0x1;
10193        private static final byte MARQUEE_RUNNING = 0x2;
10194
10195        private final WeakReference<TextView> mView;
10196        private final Choreographer mChoreographer;
10197
10198        private byte mStatus = MARQUEE_STOPPED;
10199        private final float mPixelsPerSecond;
10200        private float mMaxScroll;
10201        private float mMaxFadeScroll;
10202        private float mGhostStart;
10203        private float mGhostOffset;
10204        private float mFadeStop;
10205        private int mRepeatLimit;
10206
10207        private float mScroll;
10208        private long mLastAnimationMs;
10209
10210        Marquee(TextView v) {
10211            final float density = v.getContext().getResources().getDisplayMetrics().density;
10212            mPixelsPerSecond = MARQUEE_DP_PER_SECOND * density;
10213            mView = new WeakReference<TextView>(v);
10214            mChoreographer = Choreographer.getInstance();
10215        }
10216
10217        private Choreographer.FrameCallback mTickCallback = new Choreographer.FrameCallback() {
10218            @Override
10219            public void doFrame(long frameTimeNanos) {
10220                tick();
10221            }
10222        };
10223
10224        private Choreographer.FrameCallback mStartCallback = new Choreographer.FrameCallback() {
10225            @Override
10226            public void doFrame(long frameTimeNanos) {
10227                mStatus = MARQUEE_RUNNING;
10228                mLastAnimationMs = mChoreographer.getFrameTime();
10229                tick();
10230            }
10231        };
10232
10233        private Choreographer.FrameCallback mRestartCallback = new Choreographer.FrameCallback() {
10234            @Override
10235            public void doFrame(long frameTimeNanos) {
10236                if (mStatus == MARQUEE_RUNNING) {
10237                    if (mRepeatLimit >= 0) {
10238                        mRepeatLimit--;
10239                    }
10240                    start(mRepeatLimit);
10241                }
10242            }
10243        };
10244
10245        void tick() {
10246            if (mStatus != MARQUEE_RUNNING) {
10247                return;
10248            }
10249
10250            mChoreographer.removeFrameCallback(mTickCallback);
10251
10252            final TextView textView = mView.get();
10253            if (textView != null && (textView.isFocused() || textView.isSelected())) {
10254                long currentMs = mChoreographer.getFrameTime();
10255                long deltaMs = currentMs - mLastAnimationMs;
10256                mLastAnimationMs = currentMs;
10257                float deltaPx = deltaMs / 1000f * mPixelsPerSecond;
10258                mScroll += deltaPx;
10259                if (mScroll > mMaxScroll) {
10260                    mScroll = mMaxScroll;
10261                    mChoreographer.postFrameCallbackDelayed(mRestartCallback, MARQUEE_DELAY);
10262                } else {
10263                    mChoreographer.postFrameCallback(mTickCallback);
10264                }
10265                textView.invalidate();
10266            }
10267        }
10268
10269        void stop() {
10270            mStatus = MARQUEE_STOPPED;
10271            mChoreographer.removeFrameCallback(mStartCallback);
10272            mChoreographer.removeFrameCallback(mRestartCallback);
10273            mChoreographer.removeFrameCallback(mTickCallback);
10274            resetScroll();
10275        }
10276
10277        private void resetScroll() {
10278            mScroll = 0.0f;
10279            final TextView textView = mView.get();
10280            if (textView != null) textView.invalidate();
10281        }
10282
10283        void start(int repeatLimit) {
10284            if (repeatLimit == 0) {
10285                stop();
10286                return;
10287            }
10288            mRepeatLimit = repeatLimit;
10289            final TextView textView = mView.get();
10290            if (textView != null && textView.mLayout != null) {
10291                mStatus = MARQUEE_STARTING;
10292                mScroll = 0.0f;
10293                final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() -
10294                        textView.getCompoundPaddingRight();
10295                final float lineWidth = textView.mLayout.getLineWidth(0);
10296                final float gap = textWidth / 3.0f;
10297                mGhostStart = lineWidth - textWidth + gap;
10298                mMaxScroll = mGhostStart + textWidth;
10299                mGhostOffset = lineWidth + gap;
10300                mFadeStop = lineWidth + textWidth / 6.0f;
10301                mMaxFadeScroll = mGhostStart + lineWidth + lineWidth;
10302
10303                textView.invalidate();
10304                mChoreographer.postFrameCallback(mStartCallback);
10305            }
10306        }
10307
10308        float getGhostOffset() {
10309            return mGhostOffset;
10310        }
10311
10312        float getScroll() {
10313            return mScroll;
10314        }
10315
10316        float getMaxFadeScroll() {
10317            return mMaxFadeScroll;
10318        }
10319
10320        boolean shouldDrawLeftFade() {
10321            return mScroll <= mFadeStop;
10322        }
10323
10324        boolean shouldDrawGhost() {
10325            return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart;
10326        }
10327
10328        boolean isRunning() {
10329            return mStatus == MARQUEE_RUNNING;
10330        }
10331
10332        boolean isStopped() {
10333            return mStatus == MARQUEE_STOPPED;
10334        }
10335    }
10336
10337    private class ChangeWatcher implements TextWatcher, SpanWatcher {
10338
10339        private CharSequence mBeforeText;
10340
10341        public void beforeTextChanged(CharSequence buffer, int start,
10342                                      int before, int after) {
10343            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start
10344                    + " before=" + before + " after=" + after + ": " + buffer);
10345
10346            if (AccessibilityManager.getInstance(mContext).isEnabled()
10347                    && ((!isPasswordInputType(getInputType()) && !hasPasswordTransformationMethod())
10348                            || shouldSpeakPasswordsForAccessibility())) {
10349                mBeforeText = buffer.toString();
10350            }
10351
10352            TextView.this.sendBeforeTextChanged(buffer, start, before, after);
10353        }
10354
10355        public void onTextChanged(CharSequence buffer, int start, int before, int after) {
10356            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start
10357                    + " before=" + before + " after=" + after + ": " + buffer);
10358            TextView.this.handleTextChanged(buffer, start, before, after);
10359
10360            if (AccessibilityManager.getInstance(mContext).isEnabled() &&
10361                    (isFocused() || isSelected() && isShown())) {
10362                sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after);
10363                mBeforeText = null;
10364            }
10365        }
10366
10367        public void afterTextChanged(Editable buffer) {
10368            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer);
10369            TextView.this.sendAfterTextChanged(buffer);
10370
10371            if (MetaKeyKeyListener.getMetaState(buffer, MetaKeyKeyListener.META_SELECTING) != 0) {
10372                MetaKeyKeyListener.stopSelecting(TextView.this, buffer);
10373            }
10374        }
10375
10376        public void onSpanChanged(Spannable buf, Object what, int s, int e, int st, int en) {
10377            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e
10378                    + " st=" + st + " en=" + en + " what=" + what + ": " + buf);
10379            TextView.this.spanChange(buf, what, s, st, e, en);
10380        }
10381
10382        public void onSpanAdded(Spannable buf, Object what, int s, int e) {
10383            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e
10384                    + " what=" + what + ": " + buf);
10385            TextView.this.spanChange(buf, what, -1, s, -1, e);
10386        }
10387
10388        public void onSpanRemoved(Spannable buf, Object what, int s, int e) {
10389            if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e
10390                    + " what=" + what + ": " + buf);
10391            TextView.this.spanChange(buf, what, s, -1, e, -1);
10392        }
10393    }
10394}
10395